• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    To insert labels into an injection mold in which plastic containers are made, a loading unit is used. It has a Achsgrundkörper (6), along which a moving unit (5) is moved, which is mounted with carriages (9) on guide rails (17, 18). They are arranged with respect to the Achsgrundkörper (6) so that the heat input into the Achsgrundkörper (6) does not lead to unacceptable deformation of the Achsgrundkörpers (6) due to thermal expansion. As a result, the insertion unit can place the labels precisely positioned in the injection mold without complex cooling measures on the axle base body (6) being required.
    公开号:CH705146B1
    申请号:CH00818/12
    申请日:2012-06-11
    公开日:2016-03-31
    发明作者:Bernd Müller；Marc Riedl；Thomas Haas；Jochen Buck
    申请人:Marbach Moulds & Automation Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a loading unit for inserting labels in an injection mold for the production of plastic containers according to the preamble of claim 1.
    For the production of plastic containers with labels or labels, the labels are first inserted into the injection mold with the aid of a loading unit. Subsequently, the injection mold is closed and the plastic injected, which is molded onto the inside of the labels. In order for the labels on the plastic container to have a precise position, it is necessary to position the labels precisely in the injection mold. The loading unit has a positioning unit which is moved along an axle base body from a rest position into a transfer position on the injection molding machine. During operation, the Achsgrundkörper heats up, which leads to deflections. As a result, over time the labels of the inserter unit are no longer stored in the injection mold in exactly the same position. The longer the Achsgrundkörper is, the stronger the deflection and the sooner it comes to disruptions in injection molding due to not cleanly inserted labels. It even happens that the labels are withdrawn from the injection mold when returning the insert punches due to the inaccurate positioning.
    In order to increase the Einlegegenauigkeit it is known to cool the guides for the carriage of the track. Between the guide rails and the Achsgrundkörper cooling rails are inserted for this purpose, which are flowed through by the cooling medium. However, such insert units are structurally very expensive and make the insertion unit more expensive.
    The invention has the object of providing the generic insertion unit in such a way that with its structurally simple design and cost-effective production, the labels can be placed accurately positioned even in longer operating times in the injection mold of an injection molding machine.
    This object is achieved in the generic insertion unit according to the invention with the characterizing features of claim 1.
    In the inventive insertion unit, the guide rails are arranged with respect to the Achsgrundkörper so that the heat input during operation of the insertion unit in the Achsgrundkörper leads to no inadmissible deformation of the Achsgrundkörpers. Due to this design, the deformations of the Achsgrundkörpers remain so low due to the thermal expansion, even if the Achsgrundkörper has long lengths, that the insertion of the insertion insert the labels precisely positioned in the injection mold. Elaborate cooling measures on Achsgrundkörper are not required, so that the insertion unit has a structurally simple structure and can be manufactured inexpensively.
    Advantageously, the Achsgrundkörper is formed substantially symmetrically with respect to its longitudinal and / or its transverse center plane. As a result, the heat resulting from prolonged use of the insertion unit can be distributed uniformly in the axle body.
    Essential here is the substantially symmetrical design with respect to the transverse center plane of the Achsgrundkörpers.
    In an advantageous embodiment, the Achsgrundkörper at least one in the process direction of the track extending supporting body, which consists of thermally conductive, preferably made of metallic material.
    Preferably, the support body is a tube which is a low-cost component, has low weight and yet has a high strength.
    The support body is advantageously provided on opposite sides, each with a holder which also consists of thermally conductive, preferably made of metallic material. The holders can be easily attached to the support body sides, for example, screw on. It is advantageous if the holders lie flat over their length and width on the support body sides. As a result, the heat generated when using the insertion unit is optimally introduced into the support body. In this case, the holders are mounted on the support body such that the heat input from the holders into the support body does not lead to any inadmissible deformation of the support body. The holders are advantageously mounted symmetrically with respect to the transverse center plane of the support body on the opposing support body sides. Even if the holders are provided slightly asymmetrical with respect to the transverse center plane on the support body, the unacceptable deformation of the support body due to the heat input is avoided.
    The holders are advantageously provided in half the width of the support body sides.
    On the holders, the guide rails are attached, for example screwed. About the guide rails and the holder, the resulting heat can be delivered to the support body.
    The thus achieved optimum heat transfer is further improved if the width of the holder is smaller than the width, preferably smaller than half the width of the opposing support body sides.
    The trajectory is advantageously suspended suspended on Achsgrundkörper.
    Preferably, a part of the drive for the track is housed in the support body.
    Further possible embodiments of the invention will become apparent from the dependent claims, the description and the drawings.
    The invention will be explained in more detail with reference to an embodiment shown in the drawings. Show it<Tb> FIG. 1 <SEP> in perspective representation an inventive insertion unit for labels in a transfer position on an injection molding machine for plastic containers,<Tb> FIG. 2 <SEP> in perspective view a part of the inventive insertion unit,<Tb> FIG. 3 shows a part of the insertion unit according to the invention according to FIG. 2, in an enlarged view, FIG.<Tb> FIG. 4 <SEP> is a front view of an axle body of the insertion unit according to the invention.
    With the insertion unit labels 1 are inserted in a known manner in a spray chamber of a die 2 of an injection molding machine 3. It usually has several matrices 2 with corresponding receiving spaces. The insertion unit 4 is designed so that at the same time in each die 2 with insertion dies 7, the corresponding labels 1 are inserted. After inserting the labels 1 into the respective dies 2, the plastic for producing the containers is known to be injected after closure of the injection mold. Depending on the design of the plastic container to be produced, the label is provided on the bottom or on the circumference of the plastic container. There are also known plastic containers in which two labels are provided which are present at the periphery and at the bottom of the plastic container. The two labels overlap one another so that the plastic is not visible from the outside in the area between the two labels. This requires a precise position of the two labels in the injection mold. With the insertion unit 4, the labels 1 can be inserted precisely into the cavities of the matrices 2.
    The insertion unit 4 has a positioning unit 5, which is mounted so as to be movable on an axle body 6. The positioning unit 5 has, in a known manner, the insertion dies 7 with which the labels 1 are inserted into the dies 2.
    The traversing unit 5 has a main body 8 (FIG. 2) which can be moved along with the carriage 9 along the axle main body 6.
    The Achsgrundkörper 6 has a support body 10, which is advantageously designed as a square tube, but can also have any other suitable cross-sectional training. The support body 10 is made of metallic, i. good heat-conducting material, preferably made of steel. The support body 10 is formed symmetrically with respect to its longitudinal and transverse center plane 21, 22. The supporting body 10 accommodates part of a drive (not shown) for the moving part 5. This drive is an endless drive, advantageously a belt drive, with which the moving unit 5 can be moved along the support body 10. The upper strand of this belt drive is accommodated in the tubular support body 10 to save space.
    At the opposite outer sides of the opposing side walls 11, 12 of the support body 10 is in each case one in the longitudinal direction of the support body 10 extending holder 13, 14 is provided. The holders advantageously extend over the length of the carrier body 10. However, it is also possible to form the holders 13, 14 from a plurality of mutually set holder sections. The holders 13, 14 are advantageously solid and connected to the support body 10 with good thermal conductivity. The two holders 13, 14 are advantageously screwed to the side walls 11, 12 of the support body 10. But it is also any other suitable attachment of the holder 13, 14 on the support body 10 is possible, as long as the heat transfer from the holders 13, 14 is ensured on the support body 10.
    The holder 13, 14, which consist of thermally conductive, preferably made of metallic material, in particular steel, may also be formed as tubes.
    The holders 13, 14 have quadrangular, rectangular in the exemplary embodiment and lie with a narrow side on the side walls 11, 12 of the support body 10 at. Both holders 13, 14 are advantageously identical. They are provided in half the width of the side walls 11, 12. As a result, the axle main body 6 is formed symmetrically with respect to its longitudinal and its transverse center plane 21, 22.
    The holder 13, 14 may of course be arranged so slightly offset on the opposite side walls 11, 12 with respect to the transverse center plane 22, that consisting of the support body 10 and the holders 13, 14 Achsgrundkörper 6 no inadmissible deformations due to thermal expansion performs. The holders 13, 14 with the guide rails 17, 18 provided on them can deviate from the symmetry plane 22 with their cross-sectional area center of gravity by a maximum of 25% of the height of the support body 10 measured transversely to the transverse center plane 22. If, for example, the support tube 10 has a height of 200 mm, then the cross-sectional area center of gravity can be offset by a maximum of 50 mm upwards or downwards from the transverse center plane 22.
    At the bottom 15, 16 of the holder 13, 14, a guide rail 17, 18 is attached in each case. They extend in the longitudinal direction of the holder 13, 14 at a distance from the side walls 11, 12 of the support body 10. The guide rails 17, 18 are encompassed by the carriage 9. As shown in FIG. 4, the carriage 9 distance from the side walls 11, 12 of the support body 10. The carriages 9 sit on the end faces of a U-shaped fastening part 19 of the base body 8 of the track 5. The U-shaped mounting member 19 surrounds the support body 10 with game.
    The moving unit 5 is guided on the two guide rails 17, 18, each with two carriages 9, which are each arranged at a distance from each other. As a result, the moving unit 5 can be reliably moved along the supporting body 10. The guide rails 17, 18 are advantageously screwed to the underside 15, 16 of the holder 13, 14. The guide rails 17, 18 may of course be connected to the holders 13, 14 in any other suitable manner.
    To insert the labels 1, the moving unit 5 from a retracted starting position (Fig. 3) after opening the injection mold in a transfer position (Fig. 1) along the guide rails 17, 18 proceed. After inserting the labels 1, the moving unit 5 moves back to the starting position.
    The support body 10 and the holder 13, 14 form the Achsgrundkörper 6, the lengths of, for example, up to 4 m or 5 m can have. When using the insertion unit 4, the Achsgrundkörper 6 is heated, the temperature increases with increasing duration of use. Since the Achsgrundkörper 6 is formed symmetrically or substantially symmetrically with respect to its longitudinal and its transverse center plane 21, 22, the temperature increase causing heat is evenly distributed in the Achsgrundkörper 6 so that it, especially if he has longer lengths, not or deformed only to a negligible extent. The resulting heat when using the insertion unit 4 is introduced via the guide rails 17, 18 and the holders 13, 14 in the side walls 11, 12 of the support body 10. Since the holders 13, 14 are provided in half the width of the side walls 11, 12, the heat is uniformly distributed over the walls of the supporting body 10 over its length and circumference. As a result, the deformation of the support body 10 is kept minimal, so that the support body 10 and thus the Achsgrundkörper 6 does not or only slightly deflects. This ensures that in the transfer position (FIG. 1) the labels 1 can be positioned cleanly in the matrices 2, so that during the subsequent injection molding process the plastic is injected onto the labels in such a way that the labels are exactly positioned on the finished plastic container. In particular, with this inserting unit 4, two labels which are provided on the bottom and on the circumference of the injected plastic container can be positioned so reliably and precisely positioned that the two labels overlap each other without any problem. This ensures that there is no gap between the labels, through which the plastic becomes visible.
    Due to the described symmetrical design of the Achsgrundkörpers 6 complex cooling measures are not required, so that the insertion unit 4 can be manufactured inexpensively. Despite the simple structural design, the thermal expansions of the support body 10 are so minimal that the insertion positioning of the labels 1 in the dies 2 of the injection molding machine 3 is not affected.
    The guide rails 17, 18 may also be attached directly to the side walls 11, 12 of the support body 10, wherein the guide rails are formed so that the carriage 9 can be moved without touching the support body 10 in the longitudinal direction. The guide rails 17, 18 are then arranged in the same way with respect to the support body 10 so that the heat input into the support body 10 does not lead to any inadmissible deformation of the support body 10. In this case, the guide rails 17, 18 may be arranged so slightly offset with respect to the transverse center plane 22 of the support body 10, that the Achsgrundkörper, which consists in this case of the support body 10 and the guide rails 17, 18, has a slight asymmetrical design. However, this asymmetry is - as in the holders 13, 14 - only so great that the impermissible deformations are avoided or kept so small that the positionally accurate positioning of the labels is ensured in the injection mold.
    The guide rails 17, 18 and the associated holders 13, 14 may also be integrally formed with each other.
    In order for the heat distribution to be optimal, the holders 13, 14 extend only over part of the width of the side walls 11, 12. The width 20 (Figure 4) of the holders 13, 14 is in the area of contact with the side walls 11, 12 smaller than half the width of the side walls 11, 12. In Fig. 4, the heat transfer to the support body 10 is shown for the holder 13 by dashed lines. Since the holders 13, 14 are provided centrally on the side walls 11, 12, a uniform heat distribution in the support body 10 results. Since the holder 13, 14 over its length and width lie flat against the outer sides of the side walls 11, 12, is an optimal Heat transfer over the length of the holder 13, 14 ensured.
    The support body 10 is advantageously formed as a hollow body in the manner described. But it can also be designed as a solid body. Even then, as a result of the described symmetrical design of the Achsgrundkörpers 6 ensures that such a support body does not bend or only insignificant mass, so that the labels 1 can be inserted accurately positioned even in a large length of the support body 10 in the injection mold.
    权利要求:
    Claims (12)
    [1]
    1. insertion unit (4) for inserting labels into an injection mold for producing plastic containers, with at least one axle base body (6), along which at least one moving part (5) is movable, which with carriage (9) on guide rails (17, 18) is mounted, characterized in that the guide rails (17, 18) with respect to the Achsgrundkörper (6) are arranged so that the heat input into the Achsgrundkörper (6) leads to any unacceptable deformation of the Achsgrundkörpers (6).
    [2]
    2. insertion unit according to claim 1, characterized in that the Achsgrundkörper (6) with respect to its longitudinal and / or its transverse center plane (21, 22) is formed substantially symmetrically.
    [3]
    3. insertion unit according to claim 1 or 2, characterized in that the Achsgrundkörper (6) has at least one in the travel direction of the track (5) extending support body (10) made of thermally conductive, preferably of metallic material.
    [4]
    4. insertion unit according to claim 3, characterized in that the supporting body (10) is a tube.
    [5]
    5. insertion unit according to claim 3 or 4, characterized in that the supporting body (10) has a polygonal, preferably quadrangular cross-section.
    [6]
    6. insertion unit according to one of claims 3 to 5, characterized in that on opposite sides (11, 12) of the support body (10) at least one holder (13, 14) made of heat conductive, preferably made of metallic material is fixed so that the heat input from the holders (13, 14) into the carrier body (10) does not lead to any inadmissible deformation of the carrier body (10).
    [7]
    7. insertion unit according to claim 6, characterized in that the holders (13, 14) in half the width of the support body sides (11, 12) are provided.
    [8]
    8. insertion unit according to claim 6 or 7, characterized in that on the holders (13, 14), the guide rails (17, 18) are attached.
    [9]
    9. insertion unit according to one of claims 6 to 8, characterized in that the width (20) of the holder (13, 14) is smaller than the width of the opposite support body sides (11, 12).
    [10]
    10. insertion unit according to claim 9, characterized in that the width (20) of the holder (13, 14) is smaller than half the width of the opposing support body sides (11, 12).
    [11]
    11. insertion unit according to one of claims 1 to 10, characterized in that the positioning unit (5) is suspended from the Achsgrundkörper (6) is mounted.
    [12]
    12. insertion unit according to one of claims 3 to 11, characterized in that in the supporting body (10) a part of a drive for the moving part (5) is housed.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP0407766B1|1994-03-30|Device for the selective movement of yarn carriers in flat knitting machines
    DE102004005703B4|2015-04-02|Method and apparatus for continuous forming of a strip of plastic with a corrugated profile
    EP1816246B1|2019-09-25|Take-off comb for flat or warp knitting machine
    DE3038160A1|1981-04-23|INJECTION MOLDING DEVICE
    CH705146B1|2016-03-31|Loading unit to load labels into an injection mold for the production of plastic containers.
    DE4322821C2|1998-09-17|Linear guide device
    EP3569381A1|2019-11-20|Universal plate
    DE3715356A1|1988-12-01|DEVICE FOR SEALING COVER FILMS ON PACKAGING CONTAINERS, IN PARTICULAR PLASTIC CUP
    DE19929731A1|2001-01-04|Heating injection molds
    WO1998019847A1|1998-05-14|Injection moulding nozzle
    DE1614834C2|1973-12-13|Method for producing a semiconductor arrangement
    DE19842092C2|2002-06-13|Device for the production of injection molded or pressed parts
    CH703727A1|2012-03-15|A method of producing sheet stack bodies.
    DE102017105260A1|2018-09-13|Device for dividing containers transported on a transport device
    DE19614513B4|2008-12-11|Linear rolling bearing with a U-shaped guide rail
    DE2833187C3|1981-12-24|Cell for optical examinations of small amounts of liquid
    DE102015114880A1|2017-03-09|Induction heated mold
    DE10214458A1|2003-10-16|Tool clamping load distribution plate for an injection molding machine comprises an intermediate plate with a central foot and peripheral supports between machine platens
    EP1090735A2|2001-04-11|Method and apparatus for thermoforming of containers
    DE102016108467B3|2017-08-03|tooling
    DE102018109945A1|2019-10-31|heater
    DE60307685T2|2007-09-06|METHOD AND DEVICE FOR CASTING VARIOUS FORMS IN A CONTINUOUS CASTING SYSTEM IN A SINGLE CASTING PROCESS
    DE1204387B|1965-11-04|Device for making tubes from soft thermoplastic material
    EP0540768B1|1996-06-19|Belt conveyor device
    EP0004262A1|1979-10-03|Insulating material for high tension devices or the like
    同族专利:
    公开号 | 公开日
    DE102011105510A1|2012-12-27|
    CH705146A2|2012-12-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AT32442T|1983-07-19|1988-02-15|Continental Plastic Containers|LABEL INSERT.|
    DE19637638C1|1996-09-16|1998-01-22|Remak Maschinenbau Gmbh|Pressure injection moulding machine making e.g. plane marbled-surface mouldings by back injection of plastic sheet|
    DE202004017526U1|2004-11-12|2005-03-31|Waldorf Technik Gmbh & Co Kg|Translation and swivel device|
    DE102007020653B4|2007-04-30|2010-08-05|Waldorf Technik Gmbh & Co. Kg|Handling device and injection molding device with handling device|
    DE102007020654A1|2007-04-30|2008-11-13|Waldorf Technik Gmbh & Co. Kg|Feeding device, injection molding device, method for feeding flat substrates|
    法律状态:
    2015-12-31| PK| Correction|Free format text: BERICHTIGUNG ERFINDER |
    2017-01-31| PL| Patent ceased|
    优先权:
    申请号 | 申请日 | 专利标题
    DE102011105510A|DE102011105510A1|2011-06-24|2011-06-24|Insertion unit for insertion of labels in injection mold for production of plastic containers, has base body axis along which moving part is provided that is mounted with carriage on guide rails|
    [返回顶部]