奥地利专利AT510588A4 APPARATUS AND METHOD FOR PRODUCING HOLLOW BODIES BY INJECTION MOLDING AND BLOWING FORMS

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专利摘要:
The invention relates to a system and a method for producing hollow bodies by injection molding and subsequent blow molding. The system comprises an injection mold having at least one cavity for producing a preform (3) with a neck extension (18) and a hollow body part (22) adjoining the neck extension (18), a blow mold for shaping the hollow body from the preform (3) and transfer means (7) for transporting the preform (3) from the injection mold to the blow mold. The transfer means (7) comprises a support frame (9) on which at least one holding member (10) for the at least one preform (3) is arranged. During the transfer of the preform (3) starting from the opened injection mold towards the transfer means (7), the preform (3) is held on the outside of its neck extension (18) by a tool part of the injection mold and is thereby removed from the cavity. Then, the preform (3) is placed with the interior of its neck extension (18) on the holding member (10), so that the holding member (10) rests against an inner surface of the neck extension (18).
公开号:AT510588A4
申请号:T22/2011
申请日:2011-01-07
公开日:2012-05-15
发明作者:
申请人:Mould & Matic Solutions Gmbh；
IPC主号:

专利说明:

-1 - • * φ * «·» · «* * * φ · *
The invention relates to a plant for the production of hollow bodies by injection molding and subsequent blow molding, as described in claim 1.
Basically, a distinction is made in the blow molding a one-stage and a two-stage manufacturing process of hollow bodies. In a two-stage process, the preforms are first produced in an in-house injection molding station and stored with a low volume requirement. If finished hollow body is required, the preforms ordered by heating chambers and optionally partially zoned differently tempered, then the thus preheated preforms of the blow mold are fed and then inflated with high pressure and the final hollow body, for example in bottles or canned b2W. Canister shape, made.
In the further known single-stage process, the preform is first produced in an injection mold, the preform being removed therefrom and subsequently transferred to the blow molding station for final shaping in the course of a turntable. It is possible that the preform produced is either held in the region of its outer circumference on the collar or directly on the mold core of the injection mold and is transported by means of this to the blowing station on.
The present invention has for its object to provide a system for the production of hollow bodies by injection molding and subsequent blow molding, in which the final shaping of the hollow body takes place immediately after the injection molding process and thereby the entire transport within the system can be made simple.
This object of the invention is solved by the features of claim 1. The advantage resulting from the features of claim 1 is that such a nearly independent operation between the injection mold and the Btasstation with their -2- -2-
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Blow mold can be done. The fact that here with at least one transfer means Auslangen can be found, after opening the injection mold and the removal of the preforms and the associated transfer to the transfer means, after a short transport already created the opportunity to close the injection mold and a re-injection molding process, while the transfer medium is moved together with the preforms towards the blowing station. Because an internal holder or clamping takes place on the holding members of the transfer means already during the takeover of the preforms, all external surfaces are freely accessible in the region of the outside of the preform and the subsequently produced hollow body. Due to the specially designed holding member, not only is an inner holder of the preform and of the hollow body produced therefrom, but also in the region of the blowing station for the final shaping, the corresponding shaping means can be passed through the holding member. Thus, a central space-saving support for the preforms and the later produced therefrom hollow body is created.
Also advantageous is a further embodiment according to claim 2, since the possibility is created, in the region of the holding member to ensure a controlled, individual support or clamping of the preforms or hollow bodies to be held thereon. This not only a simplified placement of the preform is achieved on the retainer but also achieved a damage-free clamping on the retainer. If the clamping body formed continuously over the circumference, so a more uniform pressure distribution can be achieved. Furthermore, this also makes it possible to achieve a better positioning of the preforms to be formed in the area of the blow mold.
Also advantageous is an embodiment according to claim 3, since so immediately after the beginning of the holding process of the preform on the retainer that portion of the preform, which is already determined in its spatial form by the injection molding final and should not be changed, quickly introduced heat withdrawn and further solidified. This prevents an unwanted change in shape of at least the neck extension during the holder or clamping of the preform on the holding member.
The embodiment according to claim 4 makes it possible, even in the area of the blowing station, in particular its blow mold, to have a straight-line transport movement of the transfer means be able to maintain its support frame and still allow unhindered demolding of the hollow body produced in the blow mold.
According to another embodiment variant according to claim 5 as a multiple production of preforms and the hollow body formed therefrom is made possible, while still a straight Fürderweg can be maintained in the entire system.
Also advantageous is a development according to claim 6, since so with the least effort an exact guidance of the transfer medium in the entire system is made possible.
In the embodiment according to claim 7 it is advantageous that a separate tool part is already provided in the region of the injection mold for the removal of the preforms produced, which not only serves to form a section of the preform, but at the same time also the demolding movement of the preforms from the opened injection mold allows. After the transfer of the preforms towards the transfer means, the external release of the preforms from the tool part takes place first. After appropriate return operations and the closing of the entire injection mold again predetermined cavities or cavities for further injection molding available.
Through the development according to claim 8 it is achieved that can be maintained by the laterally selected opening movement of the blow moldings of the blow mold, the rectilinear further movement of the transfer means and still a proper demolding of the hollow body produced is made possible.
The embodiment of claim 9 unnecessary transfer operations are avoided and still allows a perfect manufacturing process of the hollow body from the preforms. This can be used directly in the blow mold without high manipulation of the preform and removed after the final manufacturing process of the hollow body produced therefrom without additional handover and removed with the same retainer and moved on.
Also advantageous is an embodiment according to claim 10, since a simple demolding and removal of the produced hollow body can be carried out in the blowing station without the transfer means needing a separate guide track.
The object of the invention is, however, independently solved by a method for producing hollow bodies by injection molding and subsequent blow molding according to the features specified in claim 11. The advantages resulting from the combination of features of this claim are that such a nearly independent operation between the injection mold and the blowing station can be done with their blow mold. The fact that here with at least one transfer means Auslangen can be found, after opening the injection mold and the removal of the preforms and the associated transfer to the transfer means, after a short transport already created the opportunity again to close the injection mold and a re-injection molding process, while the transfer medium is moved together with the preforms towards the blowing station. Due to the fact that an internal holding or clamping takes place on the holding members of the transfer means already during the takeover of the preforms, all outer surfaces are freely accessible in the region of the outside of the preform and the subsequently produced hollow body. Due to the specially designed holding member not only an internal support of the preform and the hollow body produced therefrom, but it can also be carried out in the blowing station for the final shaping, the corresponding shaping means through the retainer. Thus, a central space-saving support for the preforms and the later produced therefrom hollow body is created.
In this case, an approach according to claim 12 proves to be advantageous since the possibility is created to ensure in the area of the Haiteorgans a controlled, individual support or clamping of the preforms or hollow bodies to be held thereon. This not only a simplified placement of the preform is achieved on the retainer but also achieved a damage-free clamping on the retainer. If the clamping body formed continuously over the circumference, so a more uniform pressure distribution can be achieved. Furthermore, this also makes it possible to achieve a better positioning of the preforms to be formed in the area of the blow mold.
According to an advantageous variant of the method according to claim 13 is so immediately after the beginning of the holding process of the preform on the holding member that portion of the preform, which is already determined in its spatial form by the injection molding final, the introduced heat quickly withdrawn and further solidified. This prevents an unwanted change in shape of at least the neck extension during the holder or clamping of the preform on the holding member. -5- I · I · 4 · »* # · ·
However, a variant of the method according to claim 14 is also advantageous since a straight-line transport movement of the transfer means with its support frame can be maintained in the blowing station, in particular its blow mold, and unhindered removal of the hollow bodies produced in the blow mold is nevertheless made possible.
According to the procedure of claim 15, an exact guidance of the transfer medium in the entire system is thus made possible with the least possible effort.
Furthermore, an approach according to the features specified in claim 16 is advantageous because even in the area of the injection mold for the removal of preforms produced its own tool part is provided, which not only serves to form a portion of the preform, but at the same time also the Entformbewegung the Preforms from the opened injection mold allows. After the transfer of the preforms towards the transfer means, the external release of the preforms from the tool part takes place first. After appropriate return operations and the closing of the entire injection mold again predetermined cavities or cavities for further injection molding available. It is also possible a method variant according to claim 17, as can be maintained by the laterally selected opening movement of the blow moldings of the blow mold rectilinear movement of the transfer agent and still a proper demolding of the hollow body produced is ensured.
Furthermore, an approach according to the features specified in claim 18 is advantageous because so unnecessary handover operations and still a perfect manufacturing process of the hollow body is made possible from the preforms. This can be used directly in the bias mold without high manipulation of the preform and removed after the final manufacturing process of the hollow body made therefrom without additional handover and removed with the same retainer and moved on.
Advantageously, the method variant according to claim 19, since in the area of the blowing statron a simple demoulding and removal of the produced hollow body can take place without the need for a separate guideway by the transfer means. -6-
Finally, an approach according to the features specified in claim 20 is advantageous, because thereby immediately after the production of the hollow body, a quality inspection is possible in order to be immediately aware of possible manufacturing defects and to be able to intervene in the manufacturing process at short notice. Furthermore, this also creates the possibility of weeding out defective hollow bodies or hollow bodies that do not correspond to the desired quality characteristics.
For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
Each shows in a highly schematically simplified representation:
1 shows a plant according to the invention for the production of hollow bodies from a preform, in view and simplified representation.
Figure 2 shows a possible embodiment of the transfer means for transporting the hollow body to be produced from the preforms, in a view from above and Schaubiidlich simplified representation.
3 shows the transfer means according to FIG. 2, in a view from below and diagrammatically simplified representation;
4 shows the injection mold in a simplified perspective view, in the closed state;
FIG. 5 shows the injection mold according to FIG. 4 in a view and in an opened position; FIG.
Fig. 6 shows the injection mold according to FIGS. 4 and 5 in the open position and the
Transfer between the Fomnteilen, in schematimally simplified representation;
7 is a partial section of the holding member with the additional tool part of the injection mold in the transfer position of the preform, cut in elevation and simplified representation;
Fig. 8 shows a first embodiment of the holding member with a preform held by this, in view cut and simplified representation;
Figure 9 shows another embodiment of the holding member with a preform held by this, in view cut and simplified representation.
Fig. 10 shows a further possible embodiment of the holding member with a preform held by this, in view cut and simplified representation;
FIG. 11 shows a possible embodiment of the blowing station with the blow mold in a closed operating position; FIG. in view and simplified representation;
FIG. 12 shows the blow molding station according to FIG. 11, but with the blow mold open, in a view and simplified illustration; FIG.
Fig. 13 shows a possible and possibly independent training of a tool carriage for mounting aid of the injection mold, in a graphically simplified representation.
By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred to the new situation mutatis mutandis when a change in position. Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent, inventive or inventive solutions. All statements on ranges of values in the description of the present invention should be understood to include any and all sub-ranges thereof, e.g. the indication 1 to 10 should be understood to include all sub-ranges, starting from the lower limit 1 and the upper limit 10, i. all subregions begin with a lower limit of 1 or greater and end at an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1 or 5.5 to 10.
In FIGS. 1 to 10 a system 1 for the production of hollow bodies 2 by injection molding and subsequent blow molding is shown in simplified form. In this embodiment described and shown here, at least one preform 3 is formed in an injection molding tool 4 in a first station, in which at least one cavity is formed.
5 is formed or arranged. The preform 3 can also be referred to as a so-called preform, which is formed in a known injection molding process by appropriately softened and processed plastic material by means of an extruder plant not shown here the injection mold 4.
In a further station of Appendix 1, the deformation of the preform 3 is carried out towards the hollow body 2. The final shaping is also carried out in a known deformation process of the preform 3 towards the finished hollow body 2. This further station comprises at least one blow mold 6 with this cooperating and appropriately designed drive and shooting means, wherein in the closed blow mold 6, the deformation of the preform 3 takes place. Thus, this station can also be referred to as Endformstation or Endformgebungsstation.
The transport of the preform 3, starting from the injection mold 4 to the blow mold 6 takes place here with its own transfer means 7, which is preferably moved in a rectilinear movement at least between the injection mold 4 and the blow mold 6 on simplified transport rails 8 shown.
As can now be better seen in FIGS. 2 and 3, the transfer means 7 comprises a support frame 9, on which at least one holding member 10, optionally with the interposition of a movable base plate 13, 14, is arranged for each preform 3. It should be noted that the transfer means 7 with the one or more holding members 10 alone can represent an independent invention without the other parts of the system, such as the injection mold 4, the blow mold 6. The task here can be seen in the fact that an independent transfer means is to be created, with which the preform or preforms 3 can be handled easily and safely. It is advantageous if the held on the respective holding member 10 on its inner side of the neck extension 18 preform 3 is taken over by the injection mold 4 and is then continuously maintained until the final shaping and further transport to a discharge station from the same holding member 10 and the shaping - And / or editing operations can continue to be performed freely. Thus, an independent transfer agent 7 is created, with which on the entire outside of the preform 3 to the finished hollow body 2 always unhindered access is possible.
In the present embodiment, a plurality of holding members 10 are provided on the transfer means 7, which are seen in the transport direction of the support frame 9 between the injection mold 4 and the blow mold 6, arranged in a first Haiteorgangruppe 11 in a row parallel to the first Halteorgangruppe 11 is in Transport direction seen, another Halteorgangruppe 12 next to the first Halteorgangruppe 11 arranged with a further plurality of holding members 10. The individual holding members 10 of each of the Halteorgangruppen 11,12 are each arranged on a first or further base plate 13, 14. Each of the base plates 13,14 is mounted relative to the support frame 9 in the transverse direction with respect to the transport direction of the support frame 9 at this adjustable. This is simplified for each of the base plates 13, 14 represented by registered arrows. This transverse adjustment or lateral displacement of the individual holding members 10, in particular with the interposition of the base plates 13, 14 relative to the support frame 9, will be explained in more detail below in connection with the blow mold 6.
The simplest embodiment would be such that seen on the support frame 9 in the transport direction two or more holding members 10 are arranged side by side on this and each of the holding members 10 is preferably independently displaceable in the transverse direction to the transport direction in the transport plane. Depending on the number and the spatial shape of the preforms 3 or hollow body 2 to be produced, the number of holding members 10 and the Halteorgangruppen 11,12 can be freely selected.
In this embodiment shown here, the support frame 9 is window-bi-biidet and includes peripherally arranged longitudinal webs 15 and the longitudinal webs 15 connecting transverse webs 16. Parallel to the two longitudinal webs 15 extends between the transverse webs 16 at least one connecting web 17. In several juxtaposed Halteorgangruppen eleventh , 12 is the size of the support frame 9 to adapt accordingly, in which case a plurality of connecting webs 17 may be provided in the window-like recesses between the individual webs here are the two base plates 13, 14 in the direction perpendicular to the longitudinal extent of the longitudinal webs 15 on the transverse webs sixteenth stored stored. Thus, the relative displacement of the individual holding members 10 relative to the support frame 9 is possible.
As can now better be seen from FIGS. 4 to 7, the holding means 10 arranged on the transfer means 7 are designed so that they open in the injection mold 4 and the possible transfer position of the preform 3 towards the transfer means 7 in the still at the on the outside of its neck extension 18 held by a Werkzeugteii 19 of the injection molding tool 4 preform 3 in the interior of the same - be used. Before, after the opening movement of the injection mold 4, the preform 3 has been removed from the cavity 5 by means of this tool part 19. In this case, a partial section of the tool part 19 forms the outer contour of the preform 3 in the region of its neck extension 18 by shaping. After opening the injection molding tool 4 and the raising or lifting of the preform 3 from the cavity 5 and the holder in the region of the outside of his collar a freely accessible inner surface 20 of the neck extension 18 is created.
In the case of a vertical opening movement of the injection molding tool 4 and also the vertical or vertical removal of the preform 3 from the cavity 5, the preforms 3 can be transferred to the transfer means 7, in particular its hooking elements 10. For this purpose, the transfer means 7 is moved between the opened injection mold parts, such as mold halves 23, 24, and stopped in a corresponding position with respect to the cavities 5. By raising the tool part 19, the placement or insertion of the preforms or 3 takes place on or on the holding members 10. In this case, the preform 3 is placed with the interior of its neck extension 18 on the retainer 10 and thereby the retainer 10 at the Inner surface 20 of the neck extension 18 brought to bear. In this case, the preform 3 is supported with its neck extension 18 on the holding member 10.
Thus, after the targeted removal of the preform 3, this is transferred to the holding member 10, wherein the release of the preform 3 takes place from the tool part 19 at a corresponding holding seat of the preform 3 on the holding member 10. This ensures that is passed from the first outside bracket of the neck extension 18 on an internal support on the transfer means 7, in particular the holding members 10.
In order to obtain a sufficient clearance in the region of the interior of the collar in the subsequent subsequent further shaping, the holding member 10 should have at least one release in the region of its center, in order to move a mandrel into the interior of the preform 3, if necessary, and thus a further step To be able to perform shaping. It is therefore advantageous if the holding member 10 comprises a plurality of Hattearme 21 arranged distributed over its outer circumference.
In the case of hollow bodies 2 produced in this way, it is customary to form the holding extension 18 designed as a coupling piece in its final form already in the course of the injection molding process, and only then to attach it to the neck extension 18 - • • * * * * In the course of the blowing process, the hollow body part 22 forms the final spatial form of the hollow body 2.
It is essential here that, in the region of the transfer means 7, the preform 3 is held in the region of the inside of the neck extension 18. This is achieved by the transfer from the tool part 19 to the transfer means 7, wherein the inner holder of the preform 3 is then retained on the transfer means 7 during the blowing process described below.
In order to achieve a good support or clamping action for the preform 3 on the retainer 10, the support arms 21 in a position located outside the preform 3 position have a larger outer dimension than the retaining arms 21 receiving, inner cross section of the neck extension 18. In this case, the support arms 21 elastically deformable and / or radially adjustable be ausgebifdet.
Depending on the selected cross-section of the neck extension 18, the retaining member 10 is to be formed with the optionally arranged thereon retaining arms 21 in dependence thereon. In most cases, the neck extension 18 is formed with a round, tubular cross-section, so as to make the opening of the hollow body 2 with a closure element, not shown, easy to close. These may be lids, screw tops, crown corks or the like.
As already described above, the holding member 10 is seen in its simplest embodiment transversely with respect to the transport direction of the support frame 9 between the injection mold 4 and the blow mold 6, relative to the support frame 9 adjustably mounted on this. This would be the most minimal design and arrangement of a holding member 10 on the support frame 9 of the transfer means 7. Preferably, however, a multiple arrangement of holding members 10 in the previously described and shown Halteorgangruppen 11,12 is selected.
The corresponding bearing and guide arrangement for the transverse movement of the individual Halteorgangruppen 11, 12 is best seen in FIGS. 2 and 3, wherein the transverse displacement of Halteorgangruppen 11, 12, in particular the base plates 13, 14, relative to the support frame 9 automatically in Course of tool movements and / or but also controlled by unspecified drive means can be done. - 12- «« · «β; · * • «« «* · ·
The support frame 9 is usually guided by means of a guide arrangement in a straight-line transport movement between the injection mold 4 and the blow mold 6. For this purpose, the transport rails 8 described above can serve.
When the injection molding tool 4 is closed, the tool part 19 for shaping the neck extension 18 is arranged between the mold halves 23, 24 of the injection molding train 4, the tool part 19 being mounted so as to be adjustable in the vertical direction with respect to a dividing plane between the mold halves 23, 24. In order to enable a release of the preform 3 to the holding member 10, it is necessary to perform each, seen for the shaping of the neck extension 18 form portion of Werkzeugteiis 19 over the circumference of the neck extension 18, divided executed. For this purpose, individual tool part segments 25 may be provided which are adjustably mounted relative to the tool part 19. This release movement can be done either by a kind of rocker arm movement or else an adjustment movement in a parallel direction with respect to the parting plane of the mold halves 23, 24.
Preferably, the individual tool part segments 25 are also formed seen divided in the transport direction, whereby the release can be easily done with a simple lateral transverse displacement after the transfer of the preforms 3 to the holding members 10. Not only a self-centering of the same relative to one of the mold halves 23, 24 can take place by means of a preferred frusto-conical tapering of the tool part segments 25, but also the abutting and closing of the tool part segments 25 for the complete formation of the neck extension 18 with a diametrical division of the tool part segments 25 cause.
In this manufacturing process of the hollow body 2 selected here, the preform 3 produced in the injection mold 4 is not noticeably cooled in order to carry out the blowing process towards the finished hollow body 2 after the transport of the preform 3 to the blow mold 6, optionally without further energy or heat input can. If necessary, the preform 3, in particular its hollow body part 22, even before the start of the blowing process, an additional sufficient or corresponding amount of heat are supplied in order to ensure the deformability of the reshaped hollow body part 22. This depends on the selected process sequence or the geometry to be produced of the hollow body 2 and can be freely selected.
In the present exemplary embodiment, however, it is intended to attempt to feed the preform 3 directly from the injection molding tool 4 without additional introduction of heat energy.
* * »« «I * * * * ·» »*« »** <i>« i »« «4
* * * I »4 * · *« I - 13-parts of the tool part to remove 19 and pass to the holding member 10 of the transfer means 7. Immediately thereafter, the further transport takes place to the further station, namely the forming station with the blow mold 6. In the blow mold 6, the final shaping is carried out towards the hollow body 2.
As can now be seen from a synopsis of FIGS. 7 and 8, that position is shown here in which the preform 3 has been transferred to the holding member 10 of the transfer means 7 and has been brought to the Haiteorgan 10 with its inner surface 20 to the plant. In this embodiment shown here, the holding member 10 comprises a plurality of distributed over the circumference arranged holding arms 21, which produce a sufficient clamping action for the preform 3 to be supported thereon. Due to the marginal cambered design of the individual holding arms 21 and the circumferential spacing of the same from each other, a sufficient holding force for the transport process is always achieved even with slight deviations from the cross-sectional dimension of the neck extension 18. The individual holding arms 21 are circumferentially arranged with first ends on the side facing away from the hollow body part 22 as part of the holding member 10 there fixed. The other end of each Haitearms 21 is not firmly clamped or fixedly arranged on the holding member 10 and thus freely movable within certain limits.
The holding arms 21 create the possibility of ensuring an individual holding or clamping of the preforms or hollow bodies to be held in the region of the holding member 10. Due to the multiply arranged holding arms 10, a centric positioning of the preform 3 or hollow body 2 relative to the holding member 10 can be achieved. As a result, however, a better positioning of the preforms 3 to be formed in the area of the blow mold 6 can also be achieved.
Due to the elasticity inherent in the retaining arms 21, even slight tolerances can be compensated, and nevertheless a perfect holding or positioning of the preforms 3 or hollow body 2 on the Haiteorgan 10 can take place.
In addition, it is still possible to provide a sealing element 27 in the region of an end face 26 of the neck extension 18 on the holding member 10 so as to achieve a sealing contact of the end face 26 on a holding section of the holding member 10 for the blowing process. This prevents that the blowing air necessary for shaping can escape from the interior of the hollow body 2 to be produced. The sealing element 27 described and illustrated here is designed as an O-ring. - 14-
FIG. 9 shows a further possible and optionally independent embodiment of a retaining element 10, with the same reference numerals or component designations being used again for the same parts as in the preceding FIGS. 1 to 8. To avoid unnecessary repetition, reference is made to the detailed description in the preceding Figs. 1 to 8 or reference.
The holding member 10 shown enlarged for receiving the preform 3 comprises at least one arcuate support arm 28 which is formed in the form of a pipe segment. A further subsection of the holding member 10, however, is formed as a fixed holding part 29, which also has a tubular segment-shaped spatial form. With this stationary formed holding part 29 of the above-described holding arm 28 is connected, wherein preferably a one-piece design is selected. The holding arm is again designed as a spring element in order to build up the necessary holding force. This embodiment can be achieved, for example, by first forming a circumferential holding part 29 in the region of the Hatteorgans 10 and then a partial separation of the holding part 29 for forming at least one holding arm 28 takes place. This can be done by appropriately aligned separating cuts and subsequent deformation and / or processing.
In the area of the end face 26 of the preform 3, the previously described sealing element 27 can again be provided for the sealing contact of the preform 3 on the holding member 10. In contrast to the embodiment described in FIGS. 7 and 8, an annular sealing element 27 is used here.
FIG. 10 shows a further embodiment of a holding member 10 for the transfer means 7, which is possibly independent of itself, again referring to the detailed description in the preceding FIGS. 1 to 9 in order to avoid unnecessary repetition , Likewise, the same reference numerals or component names are again used for the same parts as in the preceding FIGS. 1 to 9.
In this embodiment shown here, a partial section of the holding member 10 is ausgebiidet as a tubular member 30 and has on its outer side a receptacle 31 for inserting a retaining element 32. This holding element 32 may be formed either from a circumferentially continuous, one-piece component whose material has elastically deformable properties. Thus, it is possible to set the holding member 32 on the tubular member 30 of the holding member 10 and in the provided for it -15- • · • i «< · 4 ♦ Insert a holder 31 and hold it in this way. Seen in cross section then forms the holding element 32 in turn a holding arm 33. This is formed in the present embodiment all-round.
Regardless, it would also be possible to form the holding element 32 in a circumferentially divided embodiment, in which at least one axially extending separating region or separating section is provided in the form of a material separation, in which the holding element 32 is divided circumferentially. Furthermore, it would also be possible to form the holding element 32 by a plurality of individual segment parts, which can be inserted into the receptacle 31.
By the inner surface 20 facing and seen in axial section cambered outer shape of the holding member 32, in turn, the desired investment of or formed by the holding member 32 retaining arms 33 is achieved on the inner surface 20 of the neck extension 18.
Considering now the holding member 32 with his or her holding arms 33 in axial section, 18 legs 34, 35 are formed on both sides of the contact area or support area on the inner side 20 of the neck extension, which directed respectively on mutually averted sides towards the center of the holding member 10 run. By a counter-shaped projection of the holding member 32 in the region of the end face 26 of the preform 3, a shoulder 36 is formed on which at least a portion of the end face 26, in particular a transition region from the inner surface 20 of the neck extension 18 toward the end face 26 is supported. Once the holding element 32 has been formed from an elastically deformable material, the desired sealing of the interior of the preform 3 for the blowing process can be achieved in this area.
Independently of this, an independent embodiment of a holding member 10 of the transfer means 7 would be possible, in which the holding member 10 comprises on its outer surface facing the neck extension 18 a separate holding element, which is adjustable between a release position and a clamping position. This can be done, for example, that the elastically deformable retaining element is arranged on the tubular component 30 of the holding member 10 and can be adjusted by means of a pressure medium between the two positions. In this case, the holding element can be arranged either over the entire circumference continuously and / or only over sub-circumferences of the holding member 10. If a pressurized fluid is applied to a channel formed in the tubular component 16, which is assigned to the retaining element or arranged behind it, a radial deformation of the retaining element occurs and, associated therewith, an enlargement of the outer circumference. As a result, the retaining elements come to rest against the inner surface 20 of the neck extension 18, and the desired holding or clamping of the preform 3 takes place.
The holding member 10 with its variable elastic element can be used with its first smaller cross-sectional dimension in the neck extension 18. Subsequently, the elastic element, for example, by a pressure medium, such as hydraulic oil, pneumatic pressure media, radially expanded and brought into contact with the inner surface 20, Thus, the halternde effect of the preform 3 and later produced therefrom hollow body. 2
Furthermore, it would still be possible with the holding members 10 described above that this is provided with its own tempering medium channel, in particular a coolant channel, which is in flow connection via supply and discharge lines with a supply system. This makes it possible to temper the preform 3 already immediately after the takeover of the tool part 19 at least in the region of its neck extension 18, in particular dissipate heat energy.
In FIGS. 11 and 12, the blowing station with the blow mold 6 is shown, in which the preforms 3 taken over by the injection molding tool 4 are reshaped after closing the blow mold 6 to the finished hollow body 2.
Thus, in FIG. 12, an open position and in FIG. 11, the closed position of the blow mold 6 is shown, which in turn is formed from a plurality of blow moldings 37 to 39 arranged side by side in the transport direction. Since, in the embodiment shown here, two juxtaposed rows of preforms 3 are produced in the injection mold 4 by the transfer means 7, a corresponding number and arrangement of cavities must also be provided in the area of the blow mold 6.
As a minimum number, the Bfasform 6 includes two such blow moldings 37, 38th
As already described above, the preforms 3 are taken up immediately after their preparation by the common transfer agent 7 and moved to the tuyere 6 and used there in the open tuyere 6 for the blowing process. After closing the - 17- * * * * * * * * * *
• · · · * I
Blow molded parts 37 to 39 continue to hold the individual preforms 3 by the holding members associated therewith 10. Due to the fact that in this embodiment, the support of the individual preforms 3 takes place in the region of the inner side or inner surface 20 of the neck extension 18, also during the blowing process simple closing of the blow mold 6 done by the neck extension 18 is received and held with its outside in the space provided for cavity 40 of the blow mold 6. Following the closing of the blow mold 6, the or the further shaping agent is introduced in a known manner into the interior of the hollow body 22 by the previously described tubular component 30 of the holding member 10. Depending on the type of shaping desired, this can be a stretching punch, which causes axial stretching and thus enlargement in the axial direction of the preform 3. Subsequently, the final molding operation is carried out with a pressure medium in gaseous and / or liquid form. This is usually done with compressed air.
The drive of the draw punches takes place in this embodiment with a servo drive in order to carry out a better and more accurate movement of the draw punches. In this case, it is possible to proceed in such a way that first the hollow body part 22 is stretched in the axial direction by the stretching punch, whereby here an extent can be achieved which is longer than the finished hollow body 2 in the axial direction. For this purpose, a mold insert forming the base is likewise to be displaced from the cavity in the axial direction by a corresponding extent, to allow this stretching movement. The stretching punch deforms the material until the predetermined amount has been reached.
Then, the forming the bottom mold insert is shifted back toward the neck extension, taking care that the draw punch is supported with its front face with a presettable resistance under clamping of the bottom wall of the hollow body 2 on the bottom forming mold insert by is shifted back to this form of use. Thus, a centering of the bottom is achieved with respect to the longitudinal axis. During this process, the blowing process may already have been initiated in order to achieve a thicker or thicker bottom wall thickness.
Now, if the Endform process performed and a corresponding cooling of the hollow body 2 is carried out, the blow mold 6 can be opened. This can be seen from the illustration of FIG. 11, since the finished hollow body 2, in contrast to the preform 3, may have a larger cross-sectional dimension for this purpose, a corresponding opening movement of the blow mold 6 is to be provided. In the present embodiment! For example, the blow molded part 37 shown on the left is fixedly held on a base frame, whereas the other blow molded parts 37 and 38 are shifted relative to the stationary blow molded part 37 in the transverse direction to the transport direction mostly in a horizontal plane. This is done by appropriate adjusting means to ensure the necessary opening movement can. This can be done via a mechanical coupling and be formed in a conventional manner as a floor tool.
Due to the lateral opening movement of here with respect to the stationary blow molding 37 adjustable blow moldings 38, 39 is also to ensure removal of the now finished hollow body 2 sufficient Querverlagerungsmöglichkeit the same together with the retainer 10 on the support frame 9. The opening and closing movement of the movable blow molded parts 38, 39 takes place via a toggle lever drive. The lateral transverse displacement of the holding members 10 has already been described in detail. This makes it possible to carry out the transfer means 7 with its support frame 9 in a rectilinear movement in the transport direction, starting from the injection mold 4 towards the blow mold 6 and from this further to another station, such as a dispensing station and / or test station.
Due to the relative transverse displacement of the individual holding members 10, optionally with the interposition of the base plates 13,14, it is now possible in a simple manner, in a straight-line transport movement of the transfer means 7 in the area of laterally opening Blasformteile 38, 39 of the blow mold 6 the Entformung the finished hollow body 2 to perform. The transfer means 7 described above is preferably guided in a horizontally oriented transport plane 41 between the individual stations of the plant 1. The transport direction of the transfer means 7 from the injection molding tool 4 to the blow mold 6 represents a further, preferably rectilinear spatial direction. The blow mold 6 with its blow moldings 37 to 39 is then divisible in a vertically oriented dividing plane 42 in the transport direction of the transfer medium.
The individual blow molded parts 38 and 39 are guided in a plane oriented parallel to the transport plane 41 and in the vertical direction with respect to the parting plane 42 relative to each other adjustable on a base frame. In this case, the displacement of the outermost blow molding 39 with respect to the fixed blow molding 37 is greater than the Versteflweg of the first movable blow molding 38, Thus, the Versteifweg of the outermost blow molding 39 may be about twice as the displacement of the first movable blow molding 38th - 19- ff · • * • »« «· ·« * *
After opening the tuyere 6 with its blow molded parts 37 to 39 and the lateral offset of the holding members 10 relative to the support frame 9 can be carried out starting from the blow mold 6, the unimpeded further transport and the delivery of the finally produced hollow body 2 below. This delivery is usually carried out on a transport device, such as a conveyor belt or the like., With which the individual hollow body 2 to a warehouse and / or also to an immediately downstream test station to be moved. In this subsequent test station, it is possible, for example, to carry out a quality determination in which actual characteristics are ascertained on the hollow bodies 2 and, after the determination of the actual characteristics, these are compared with predetermined desired or quality characteristics. These features may relate, for example, the tightness, crack-free, wall thickness distribution, etc. of the hollow body 2 produced. If there is no match or excessive deviation from the nominal value, the hollow body 2 is eliminated.
It should be noted that the blow mold 6 or even the entire blow molding station can independently of itself represent an independent embodiment of the invention. In this case, the object of the invention can be seen to provide a blow mold 6, with which it is possible to perform a simple demolding of the hollow body 2 produced therewith. Characterized in that a blow molding 37 is held laterally fixed to a base frame and the other blow mold parts 38 and 39 can be displaced in the lateral direction with respect to the transport direction of the transfer means 7, while maintaining the rectilinear transport direction, a relative displacement of the support frame 9 held on the holding members 10 To allow hollow body 2. Thus, in the area of the blow mold 6, a rectilinear design of the guide elements for the transfer means is made possible.
Preferably, however, the blow mold 6 is completed in conjunction with the plant parts described above to Appendix 1.
The process sequence for producing the hollow body or bodies 2 from the preform 3 produced by injection molding is carried out to such an extent that the preform 3 or blanks 3 are injected in a corresponding number and mutual orientation in the injection mold 4. In a deformable state of the material, the preforms 3 are removed from the cavity 5 by means of the tool part 19 and transferred to the transfer means 7. This removal takes place when the injection molding tool is open, in which the transfer means 7 is moved in between the opened mold halves 23, 24. - 20 - * * • *
After the retaining assumption of the preforms 3, these are transported together towards the blowing station with their open blow mold 6. During this transport process, the injection mold 4 can be closed with the mold halves 23, 24 and the tool part 19 and a new injection process can be performed.
At the same time, in the area of the blowing station in the closed position of the blow mold 6, the final shaping takes place towards the hollow body 2. After the shaping has taken place, the bias mold 6 is opened by the lateral displacement of the blow molding parts 38, 39 and the finished hollow body 2 is released from the cavity or cavities 40 by the likewise lateral displacement of the holding members 10 relative to the support frame 9 of the blow mold 6. Subsequently, the further transport to a delivery and / or inspection station takes place. After this delivery or transfer to the testing station, the transfer agent 7 is moved through the blow molding station to the injection molding tool 4, in which preforms 3 have already been injected again in the meantime. Then the cyclic process starts again.
FIG. 13 shows an optionally independent embodiment of an auxiliary assembly device 43 in the form of a transporting carriage 44 with which the previously described mold halves 23, 24 of the injection molding tool 4 can be inserted into the installation 1 and removed again. This auxiliary device or auxiliary device is then used when access is no longer possible with commonly used crane systems. This is the case here, since the larger mold halves 23, 24 are arranged one above the other in a position one above the other. In this case, the object of the invention can be seen therein, the assembly of individual components, such as moldings or mold halves 23, 24 of the injection mold 4 easy and safe to introduce into the system 1 and to be able to remove it again.
The transport carriage 44 of the auxiliary assembly device 43 comprises a base frame 45, which carries a support plate 46 at its upper side. In the area of a footprint 47, such as a flat hall floor or the like, support elements 48 for supporting the base frame 45 are provided on the footprint 47. The base frame 45 may include a structure with a plurality of interconnected uprights and struts, which are tuned to the male weight or the mass of the parts of the injection mold 4. The support elements 48 receive bearing or support means with which a relative movement of the entire assembly aid 43 with respect to the footprint 47 can take place. These support means may be -21 - e.g. be formed by rollers, rollers, balls, belts or even by air cushion elements, with which it is possible to easily move the entire assembly aid 43 with the Fomnteil to be moved of the injection mold 4 on the footprint 47 can. Preferably, several of the air cushion elements can be combined to form a common Luftgleitkissensystem so as to achieve a safe movement of the entire assembly aid 43 relative to the footprint 47 can. Preferably, in each corner region of the base frame 45 within the support elements 48 or the air cushion elements are arranged.
In order to achieve a displacement movement of the supported on the support plate 46 molding of the injection mold 4, a plurality of rolling elements 49 may be provided on the support plate 46. These are preferably arranged several times in a row behind one another and usually formed by balls or the like. In order to allow relative displacement of the molded part of the injection molding tool 4, which is not shown here, relative to the support plate 46, the individual rolling elements 49 can be designed to be adjustable in the vertical direction with respect to a support surface 50 of the support plate 46 which is preferably aligned parallel to the contact surface 47. By changing the distance of the individual rolling elements 49 relative to the support surface 50, a lifting of the support surface auflagemden on the molding can be achieved, in which case the support is carried out on these rolling elements 49. The lifting can be done for example by hydraulic, pneumatic or even mechanical pressure medium. For hydraulic or pneumatic pressure means here a simple illustrated actuator 51 is disposed and shown in the area below the support plate 46. This may, for example, be a manually operated pump, in particular a hydraulic pump, with which the individual rolling elements 49 can be lifted relative to the support surface 50. Due to the fact that the injection molding tool 4, not shown here, or a molded part thereof is supported on the rolling elements 49 in their raised position, a simple displacement movement into and out of the installation 1 can be carried out.
To prevent accidental slipping or relative displacement of the molding of the injection mold 4 relative to the support plate 46, the rolling elements 49 can engage in a groove-shaped recess of the tool part of the injection mold 4. In addition, at least one, but preferably a plurality of securing elements 52 can be arranged in the edge regions of the support plate 46. • · -22-
These can either serve as a stop and / or take over a certain leadership function.
In order not only in the area of the system 1, the mold parts, in particular the mold halves 23, 24 of the injection mold 4 on the dedicated equipment parts but also during installation or removal relative to be able to relocate, it may be advantageous corresponding rolling elements 49 also to provide here so starting from the assembly aid 43, the mold half 23, 24 or the tool part 19 starting from the mounting auxiliary device 43 in the system 1 and also to be able to remove from this again.
When installing and / or removing individual tool parts of the injection mold 4 in conjunction with the trolley 44 of the auxiliary assembly 43 is on a corresponding level vote the distance of the support surface 50 of the footprint 47 with respect to the shots of the moldings, in particular the mold halves 23, 24th or tool part 19 of the injection molding tool 4 of Appendix 1 to take care. In this case, a minimal adjustment of the two levels to each other during the delivery or acquisition of the tool parts by the displaceable in the vertical direction of rolling elements 49 both in the area of the trolley 44 and the system 1 done.
The Ausführungsbeispieie show possible embodiments of Appendix 1, in particular the transfer means 7 and / or the tuyere 6, it being noted at this point that the invention is not limited to the specifically illustrated embodiments thereof, but rather also various combinations of the individual embodiments with each other possible and this possibility of variation is due to the doctrine of technical action by objective invention in the skill of those skilled in this technical field. Thus, all conceivable embodiments which are possible by combinations of individual details of the embodiment variant shown and described are also included in the scope of protection,
For the sake of order, it should finally be pointed out that for a better understanding of the structure of the system 1, in particular of the transfer means 7 and / or the blow mold 6, these or their components have been shown partially unevenly and / or enlarged and / or reduced in size. -23- -23- »'» · «· **«
• +
The task underlying the independent inventive solutions can be taken from the description.
Above all, the individual in Figs. 1; 2, 3; 4, 5, 6; 7; 8th; 9; 10; 11, 12; 13 embodiments form the subject of independent solutions according to the invention. The relevant objects and solutions according to the invention can be found in the detailed descriptions of these figures. Μ * I «I I · · · ((((((((((((((((((((((.
Reference symbol 1 Appendix 2 Hollow body 3 Preform 4 Injection mold 5 Cavity 6 Blow mold 7 Transfer means 8 Transport rail 9 Support frame 10 Retainer 11 Haiteorgangruppe 12 Halteorgangruppe 13 Base plate 14 Base plate 15 Longitudinal bar 16 Cross bar 17 Connecting bar 18 Neck extension 19 Tool part 20 Inner surface 21 Retaining arm 22 Hollow body 23 Form half 24 Form half 25th Tool part segment 26 end face 27 sealing element 28 holding arm 29 holding part 30 component 31 receiving 32 holding element 33 holding arm 34 leg 35 leg 36 shoulder 37 blow mold 38 blow mold 39 blow mold 40 cavity 41 transport plane 42 graduation plane 43 assembly aid 44 dolly 45 base frame 46 support plate 47 contact surface 48 support element 49 rolling element 50 Support surface 51 Actuator 52 Safety element N2010 / 28800

权利要求:
Claims (20)
[1]
1. Plant (1) for the production of hollow bodies (2) by injection molding and subsequent blow molding, comprising an injection mold (4) with at least one cavity (5) for producing a preform (3) with a neck extension (18) and a hollow body part (22) adjoining the neck extension (18), a blow mold (6) for shaping the hollow body (2) from the preform (3) and transfer means (7) for transporting the preform (3) from the injection mold (4) towards Blow mold (6), characterized in that the transfer means (7) comprises a support frame (9) on which at least one holding member (10) for the at least one preform (3) is arranged and that in the transfer of the preform (3) starting from the opened injection mold (4) towards the transfer means (7) the preform (3) is held on the outside of its neck extension (18) by a tool part (19) of the injection mold (4) and removed from the cavity (5) n is placed while the preform (3) with the interior of its neck extension (18) on the holding member (10) while the holding member (10) on an inner surface (20) of the neck extension (18).
[2]
2. Plant (1) according to claim 1, characterized in that the holding member (10) on its the neck extension (18) facing the outer surface comprises a holding element, which is adjustable between a release position and a clamping position.
[3]
3. Plant (1) according to claim 1 or 2, characterized in that the holding member (10) is provided with a coolant channel, which is connected via supply and discharge lines with a supply system in flow communication.
[4]
4. Plant (1) according to one of the preceding claims, characterized in that the holding member (10) transversely with respect to the transport direction of the support frame (9) between the injection mold (4) and the blow mold (6) seen relative to the support frame (9 ) is mounted on this adjustable. N2010 / 28600 -2-
[5]
5. Plant (1) according to one of the preceding claims, characterized in that a plurality of holding members (10) in the transport direction of the support frame (9) between the injection mold (4) and the blow mold (6) seen in a first Halteorgangruppe (11) in a row arranged on a first base plate (13) and that a plurality of the holding members (10) in at least one further Halteorgangruppe (12) next to the first Halteorgangruppe (11) on a further base plate (14) are arranged and the base plates (13, 14) relative to the support frame (9) in the transverse direction with respect to the transport direction of the support frame (9) are adjustably mounted on this.
[6]
6. Plant (1) according to one of the preceding claims, characterized in that the support frame (9) by means of a guide arrangement in a straight-line transport movement between the injection mold (4) and the blow mold (6) is guided.
[7]
7. Plant (1) according to any one of the preceding claims, characterized in that the tool part (19) between the mold halves (23, 24) of the injection mold (4) is arranged and the tool part (19) with closed injection mold (4) the forming part the outer side of the neck extension (18), wherein the Werkzeugteii (19) in a vertical direction with respect to a parting plane between the mold halves (23, 24) is adjustably guided and the tool part (19) comprises a plurality of tool part segments (25), which in the parallel direction with respect to the parting plane of the mold halves (23, 24) are mutually adjustable.
[8]
8. Plant (1) according to one of the preceding claims, characterized in that the blow mold (6) seen in the transport direction comprises a plurality of juxtaposed blow moldings (37 to 39), and that the blow moldings (37 to 39) in the transport direction of the transfer means (7 ) are seen in a vertically aligned dividing plane (42) guided relative to each other adjustable.
[9]
9. Plant (1) according to any one of the preceding claims, characterized in that during the blowing process to form the hollow body (2) of the neck extension (18) is held by the holding member (10).
[10]
10. Plant (1) according to any one of the preceding claims, characterized in that after completion of blowing and open blow mold (6) of herge Μ9Π1Λ / 9 »« ΠΛ presented hollow body (2) together with the holding member (10) in the transverse direction with respect the transport direction is displaced relative to the support frame (9).
[11]
11. A method for producing hollow bodies (2) by injection molding and subsequent blow molding with a plant (1), in which in an injection mold (4) in at least one cavity (5) a preform (3) with a neck extension (18) and a Subsequently, the injection molding tool (4) is opened and the preform (3) is removed therefrom and transported with a transfer means (7) to a blow mold (6), wherein the blow mold (6) from the preform (3) of the hollow body (2) is formed, characterized in that the preform (2) with the injection mold (4) open on the outside of its neck extension (18) and held out of the cavity (5) is taken while the preform (3) with the interior of its neck extension (18) on a on a support frame (9) of the transfer means (7) arranged holding member (10) and thereby the holding member (10) on a Innenfl surface (20) of the neck extension (18).
[12]
12. The method according to claim 11, characterized in that on the holding member (10) on its the neck extension (18) facing the outer surface, a holding element is arranged and the holding element between a release position and a clamping position is adjustable.
[13]
13. The method according to claim 11 or 12, characterized in that in the holding member (10), a coolant channel is formed and the coolant channel is flowed through by a coolant which the Kühlmittelkana! () is supplied and discharged via supply and discharge lines from a supply system.
[14]
14. The method according to any one of claims 11 to 13, characterized in that the holding member (10) transverse direction with respect to the transport direction of the support frame (9) between the injection mold (4) and the blow mold (6) seen relative to the support frame (9) is stored adjustable on this.
[15]
15. The method according to any one of claims 11 to 14, characterized in that the support frame (9) by means of a guide arrangement in a straight-line transport movement between the injection mold (4) and the blow mold (6) is guided. -4 - • I -4 - • I
[16]
16. The method according to any one of claims 11 to 15, characterized in that between the mold halves (23, 24) of the injection mold (4) of the tool part (19) is arranged, wherein with closed injection mold (4) by the tool part (19) of the shaping Part of the outer side of the neck extension (18) is formed and that the Werkzeugteii (19) in the vertical direction with respect to a parting plane between the mold halves (23, 24) is adjustably guided guided and the tool part (19) by a plurality of tool part segments (25) is formed, which in the direction parallel to the dividing plane of the mold halves (23, 24) are guided against each other adjustable.
[17]
17. The method according to any one of claims 11 to 16, characterized in that the blow mold (6) by a plurality of arranged in the transport direction juxtaposed blow moldings (37 to 39) is formed, and that the blow moldings (37 to 39) in the transport direction of the transfer means ( 7) seen in a vertically aligned dividing plane (42) are guided relative to each other adjustable.
[18]
18. The method according to any one of claims 11 to 17, characterized in that during the blowing process to form the hollow body (2) of the neck extension (18) is held by the holding member (10).
[19]
19. The method according to any one of claims 11 to 18, characterized in that after completion of blowing and open blow mold (6) of the hollow body (2) produced together with the holding member (10) in the transverse direction relative to the transport direction relative to the support frame (9) is relocated.
[20]
20. The method according to any one of claims 11 to 19, characterized in that in one of the blow mold (6) subsequent test station actual characteristics, such as the tightness, crack-free, wall thickness distribution of the produced hollow body (2) determined and defining quality characteristics target features be compared. Mold & Matic Solutions GmbH durah

ΚΙ9Π1Λ / 9ΑΑΛΛ

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法律状态:
2021-09-15| MM01| Lapse because of not paying annual fees|Effective date: 20210107 |

优先权:

申请号 | 申请日 | 专利标题

ATA22/2011A|AT510588B1|2011-01-07|2011-01-07|APPARATUS AND METHOD FOR PRODUCING HOLLOW BODIES BY INJECTION MOLDING AND BLOWING FORMS|ATA22/2011A| AT510588B1|2011-01-07|2011-01-07|APPARATUS AND METHOD FOR PRODUCING HOLLOW BODIES BY INJECTION MOLDING AND BLOWING FORMS|

PCT/AT2012/050003| WO2012092639A2|2011-01-07|2012-01-09|Installation and method for producing hollow bodies by injection moulding and blow moulding|

US13/978,433| US9238342B2|2011-01-07|2012-01-09|Installation and method for producing hollow bodies by infection moulding and blow moulding|

EP12716177.6A| EP2670579B1|2011-01-07|2012-01-09|Installation and method for the production of hollow bodies by injection molding and blow molding|

EP18001002.7A| EP3572207A3|2011-01-07|2012-01-09|Installation and method for producing hollow bodies by injection moulding and blow moulding|

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