• 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:
    The invention relates to a method for testing an injection-molded container (2) produced from printing foils, in particular for containers (2) produced by the in-mold labeling (IML) method. The container (2) is fed to a test station (7) and in the test station (7) via a test system (15, 16), the container (2) is checked. The container (2) is fed to the test system (7) in a storage position (10) and the test takes place on an outer surface (8) as well as on an inner surface (9) of the container (2) or vice versa. The invention also relates to a test apparatus, wherein the test station (7) has at least two optical test systems (15 and 16), which are preferably arranged linearly one behind the other.
    公开号:AT518335A1
    申请号:T108/2016
    申请日:2016-03-02
    公开日:2017-09-15
    发明作者:
    申请人:Wittmann Kunststoffgeräte Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a method for testing an injection-molded container produced from printing foils, in particular for containers produced by the in-mold labeling (IML) method and a test device as described in the preambles of claims 1 and 6.
    DE 10 2010 061 559 A1 describes a device for detecting film processing errors, comprising a first error detection device for detecting a film defect and a second defect detection device for detecting a processing error, which are generally any irregularity of the processed material, such as variations in a sprayed coating, defects in the shaping, cracks, embedding, folds of the film material, defects in a protective layer or material defects. The error detection devices can in particular work with optical methods, X-ray methods, ultrasound methods, electrical methods or mechanical methods.
    Furthermore, DE 101 34 814 A1 discloses a device for checking products with labels. In this case, the apparatus comprises a supply means for supplying products, a light source and a photosensitive device, as well as a setting-up means and a recognition means for comparing a pattern of product received with the photosensitive device.
    In addition, a system for contactless color label identification and verification is known from DE 42 19 560 A1. In this case, an optical inspection system is arranged on a production line, where the containers, in particular cups, are transported randomly oriented. The optical inspection system aligns the optical head on the side walls for detecting a portion of the labels.
    The object of the invention is to provide a test apparatus and a method for this, in which a cost-effective production ensures and at the same time a simple structure is created.
    The object of the invention is achieved by a method for testing an injection-molded container produced from printing foils, in particular for containers produced by the in-mold labeling (IML) method, in which the container is fed to the test system in a storage position and the test an outer surface and an inner surface of the container, or vice versa, with transmitted light or infrared transmitted light. The advantage here is that the system without expensive turning mechanism for the container finds the Auslangen and at the same time the cycle time is shortened in the test station. Also, the manufacturing costs are thus substantially reduced, the test quality is equal or even increased. The space required for such a system is also reduced, whereby such a system is also ideal for retrofitting.
    But there are also the measures of advantage, in which the examination of the container takes place in two successive steps in the storage position of the container. As a result, costs can be saved by simple mechanically formed test systems, in which the test equipment can be easily arranged. At the same time the error-proneness is reduced by the simple structure.
    Another advantage is the measure in which in the first step of the test system, a lighting from above takes place and the inclusion of the outer surface of the container takes place laterally. This ensures that an optimal arrangement for the recording devices, in particular for the cameras, is made possible, since sufficient space is available. The illumination from above also prevents shadowing that has significantly reduced the quality of the measurements.
    But there are also the measures of advantage, in which the second step of the test system, the lighting is done from above for the inner surface, wherein the
    Recording of the inner surface from below by a transparent bottom plate takes place. This ensures that the container in the transport position in the interior, so the interior, can be checked, which allows safe transport while pollution of the interior is prevented.
    Of advantage are the measures in which in the second step of the test system, the container is taken over by a conveyor system from a conveyor belt, followed by a transparent bottom plate is performed, whereupon the container is again stored on the conveyor belt. This ensures that a transport without damage to the container on the transparent bottom plate is made possible.
    Furthermore, the object of the invention is also achieved by a test apparatus in which a supply device, in particular a conveyor belt, which supplies the containers in a test station, is provided, wherein the test station with optical inspection systems, in particular with one or more cameras for detecting a surface of the container, and a check of an outer surface and an inner surface of the container takes place in the supplied position.
    It is advantageous hereby that expensive turning mechanisms for the container can be dispensed with in order to be able to check both the outer surface and the inner surface of the container. At the same time very little space is required by the saving of the turning mechanism for the container, so that the tester can be easily retrofitted into existing production lines. The simple design of the system also reduces sources of error so that safe long-term operation of the system is guaranteed. By checking the outer surface and the inner surface of the container in just one station also increases the throughput rate or reduces the cycle time, since the turning process and conveyor paths are saved on the conveyor belt.
    An advantage is the design in which the test station has at least two optical test systems, which are preferably arranged linearly one behind the other. This ensures that the container for each test system can be optimally aligned so that a very good error detection is achieved by the optimal position of the container. Another advantage of the successive review is that it provides the lighting and cameras with sufficient space for optimal positioning, resulting in very high quality.
    It is also an embodiment of advantage, in which the test systems are provided for checking the outer surface and the inner surface of the container in the storage position. This ensures that expensive and space-consuming turning mechanisms can be saved and the containers can be checked immediately in the supplied position. By using the Abbestellung the review of the container can be done immediately following the removal station for the injection molding machine, so that such a system can be very compact.
    But it is also an embodiment of advantage in which in the storage position a bottom of the container protrudes into the air and the container rests with the open end on the conveyor belt. This ensures that a secure feed is possible because the container is placed on the widest point. At the same time we thereby prevented that during transport dirt can get into the container, which would make the review difficult.
    Also advantageous is an embodiment in which the test system has an illumination that is equipped with transmitted light or infrared transmitted light and that for receiving the container, in particular a surface, one or more cameras are arranged. As a result, a contact can be checked, which prevents damage to the surface of the container during the review.
    An advantage is an embodiment in which a check of the outer surface of the container takes place in the first test system, in which the illumination above the container, that is arranged parallel to the conveyor belt and the cameras are mounted laterally to the conveyor belt. This ensures that there is enough space for the individual components. Thus, an optimal positioning of the cameras can be done, which has a significant influence on the quality of the test result. Of course, it is possible that the illumination can be formed by a plurality of individual illuminations, which are preferably arranged above, but it can not be ruled out that individual individual illuminations are also arranged laterally next to or between the cameras.
    However, it is also an embodiment of advantage, in which the illumination is arranged above the container in the second test system and one or more cameras below a transparent bottom plate over which the container is guided, are arranged. This ensures that the container can be checked in the same position or position as in the first test system, so that the system is much easier and cheaper. Again, several individual lights can be used again.
    However, an advantage is also an embodiment in which the container is guided in the second test system by a conveyor systems, which receives the container from the conveyor belt, moves over the transparent bottom plate and turns off again on the conveyor belt. The use of a special conveyor system ensures that the container can be left in the storage position for the inner surface measurement and at the same time no damage to the container is caused during the promotion.
    An embodiment in which the container is guided between the first and the second test system via a positioning element is advantageous. As a result, the container can easily be moved in the horizontal position in order to be able to perform an optimum interior measurement with the highest quality.
    Finally, a design is advantageous in which the conveyor system is formed in the second test system by a guided over pulleys belt with drive roller therebetween, wherein the course of the belt, in particular the pulleys and the drive roller, at an angle to the transparent
    Ground plate is aligned. This ensures that the container can be transported through the special conveyor system without deformations on this over the transparent bottom plate. The belt preferably contacts the container at the strongest point, in particular the upper edge.
    The invention will be described in more detail below by means of several exemplary embodiments, the invention not being restricted exclusively to this example shown and described.
    Show it:
    Fig. 1 is a schematic representation of a test apparatus, in a simplified representation and plan view;
    Fig.2. a schematic representation of the test apparatus in side view;
    Figure 3. an embodiment of the test apparatus with only one test system for the
    Outer surface and the interior, in a simplified representation;
    Figure 4. Another embodiment in which a trolley is used instead of a conveyor belt, in a simplified representation.
    FIGS. 1 and 2 show an installation 1 in which a container 2 is produced by an injection molding machine 3, preferably by the in-mold labeling (IML) method. The container 2 is thereby removed from an extraction device 4, in particular an automatically operating gripping arm, from an injection mold 5 and deposited on a supply device, in particular a conveyor belt 6. The container 2 is then fed via the conveyor belt 6 to a test station 7 for checking the surfaces, in particular an outer surface 8 and an inner surface 9, in a position, in particular in a storage position 10. After the container 2 has been checked in the test station 7, this is conveyed to a collecting station 11, where it is then preferably automatically packed, for this purpose a plurality of containers 2 are collected, which are in a large number, for example, of 100 pcs. packed in a box (not shown). Through an appropriate shipping system, an automatic labeling can be done so that the boxes are made ready to ship. As can be seen, the production runs fully automatically until packaging, so that an automatic check in the test station 7 is necessary. Preferably, a sorting system 12 is arranged between the inspection station 7 and the collection station 11, are automatically removed from the conveyor belt 6 and transported from the inspection station 7 detected as defective container 2.
    In the further figure 2, the test station 7 is shown in more detail. It is essential here that the container 2, in particular cup, does not have to be turned in the test station 7, but that both the outer surface 8 and the inner surface 9 are tested in the supplied position. This is done in the illustrated embodiment in two separate test stations 7a and 7b, wherein in the test station 7a, the outer surface 8 and in the test station 7b, the inner surface 9 is checked. In order to ensure safe transport on the conveyor belt 6, the storage position 10 is preferably designed such that a bottom 13 of the container 2 protrudes into the air and the container 2 rests with the open end 14 on the conveyor belt 6, ie, that the container 2 wrong is stored on the conveyor belt 6. As a result, the container 2 is at the widest point, namely the open end 14, so that a tip over during transport or testing, moving, etc. is prevented. Usually, in such containers 2 or cups, the walls of the container 2 preferably tapered slightly tapered to the bottom 13 and have in the upper edge region a curved reinforcement 15. Another advantage of such a transport position 10 is that during transport no dirt can get into the interior 9 of the container 2, since this is closed by resting on the conveyor belt 6.
    Due to the wrong promotion of the container 2 on the conveyor belt 6, it is necessary in the prior art that two test stations, namely one for the outer surface and one for the inner surface 9 are necessary for the test, with a turning mechanism arranged between and preferably after the second test station is to transport the cup back wrong on the conveyor belt. In the prior art, the outer surface is checked in the first test station, whereupon the container is turned over for the first time with the first turning mechanism, and then a check of the inner surface can take place in the second test station. After the check is completed, the container is returned to the initial position, namely the transport position for safe transport. Thus, two additional expensive devices are required in the prior art.
    In contrast, it is now provided that in the inventive solution only one test station 7, which are formed by two associated test systems 15,16, for checking the outer surface 8 and the inner surface 9 in the supplied position, namely preferably the transport position 10, is checked, that is, in a test station 7, a check of the outer surface 8 -Prüfposition 15 - and the inner surface 9 -Prüfposition 16 - of the container 2 takes place in a supplied position. The inspection station 7 has two preferably optical inspection systems 15, 16, which are preferably arranged linearly one behind the other, so that the container 2 merges seamlessly from the first inspection system 15 without turning the container 2 into the second inspection system 16. As can be seen, the two test systems 15 and 16 are arranged very close to one another in order to form the test station 7 as space-saving as possible. However, in order to realize such a testing system 15, 16, it is necessary that the inspection systems 15, 16 comprise a lighting 17 equipped with transmitted light or infrared transmitted light (not shown) and on a holding frame 18 with a cover 19 are arranged at a defined distance 20 from the surface of the conveyor belt, so that the container 2 can be conveyed underneath.
    For receiving the container 2, in particular the surface 8 and the inner surface 9, one or more cameras 21 are arranged, for which purpose, for example, four cameras 21 and in the test system 16, only one camera 21 are arranged in the first test system. At the test system 16 are on each
    Side two cameras 21 arranged so that the container 2 can be conveyed in the middle between the two laterally arranged cameras 21 below the illumination 17 therethrough. Of course, it is possible that only two cameras 21 can be used here, but with four cameras 21 are positioned laterally and at a certain angle to each other, so that the outer surface 8 can be taken around, ie, that the two side cameras 21 V Are fixed in a manner such that the camera image can also accommodate the front of the container 2 in the conveying direction. Thus, in the first test system 15, a check of the outer surface 8 of the container 2, in which the illumination 17 above the container 2, that is arranged parallel to the conveyor belt 6 and the cameras 21 are laterally attached to the conveyor belt 6, whereas in the second test system 16th the lighting 17 is again arranged above the container 2 and one or more cameras 21 are arranged below a transparent bottom plate 19, over which the container 2 is guided. This is possible insofar as it is achieved by the use of transmitted light that the rays of the illumination 17 also reach the interior of the container 2, so that a recording of the inner surface 9 in the transport position 10 from below through a transparent bottom plate 22 is possible. As can be seen in the schematic structure, the individual parts or systems are constructed on a main frame 23 which is placed on the support elements 24 at the bottom 25, wherein the detailed training of the fasteners is not discussed. That is, for example, the transparent bottom plate 22 and / or the holding frames 18 are fixed to the main frame 23 and their supply of power, compressed air and the like is laid over the main frame.
    Furthermore, it is provided that the container 2 is guided between the first and the second inspection system 15, 16 via a positioning element 26, in order to achieve an optimal positioning for a special delivery system 27 in the second inspection system 16. The containers 2 are preferably deposited centrally by the removal device 4 on the conveyor belt 6, the container 2 now being displaced by the positioning element 26 onto a side half of the conveyor belt 6. For this purpose, the positioning member 26 has an angular sliding surface (not shown) and an opposite boundary surface (not shown) on which the containers 2 abut during transport with the conveyor belt 6 and are displaced along the sliding surface in a side half until they are at the boundary surface for Concerns come and be supplied to the second test system 16 in this position. The change in position has the advantage that the structure, in particular the attachment of the necessary additional conveyor system 27 via transparent bottom plate 22 is simplified. But it is also possible that with appropriate training, the positioning element 26 can be omitted.
    The container 2 is thus guided in the second test system 16 of the conveyor systems 27, wherein the conveyor system 27 receives the container 2 from the conveyor belt 6, moves over the transparent bottom plate 22 and again turns off on the conveyor belt 6. In this case, the conveyor belt 6 is interrupted in the illustrated embodiment and divided into two independent systems that can be controlled independently. As can be seen, the conveyor belt 6 ends after the positioning element 26 and is returned, for example, below the main frame 23, so that a so-called endless loop for the conveyor belt 6 is formed. At the same time, the additional conveyor system 27 begins and takes over the conveyed from conveyor belt 6 container 2 and promotes this through the transparent bottom plate 22. At the end of the conveyor system 27 again begins the conveyor belt 6, so that the container 2 is transferred from the conveyor system 27 to the conveyor belt 6 and thus an automatic transport over all stations is possible. The conveyor system 27 in the second test system 16 is formed by a guided over pulleys 28 belt 29 with interposed drive roller 30, wherein the course of the belt 29, in particular the guide rollers 28 and the drive roller 30, is aligned at an angle to the transparent bottom plate 22. The belt 29 can thereby engage or engage the reinforcement 14 of the container 2 and then convey it along the belt 29 until the container 2 is transferred again to the conveyor belt 6. The conveyor system 27, in particular the deflection rollers 28 and drive rollers 30 are preferably resiliently mounted so that damage to the containers 2 can be prevented.
    According to Figure 3, it is possible that in a test system 15, a review of the outer surface 8 and the inner surface 9 is performed, for which purpose the additional necessary conveyor system 27 is formed such that between the rotating belt, the cameras 21 arranged to receive the outer surface 8 are, whereas the camera 21 for receiving the inner surface 9 is again arranged below the transparent bottom plate 22. As can be seen schematically, the belt 29 is guided to the outside, so that the illumination 17 is arranged above the container 2 and is not disturbed by the belt 29, that is, that in a test system 15 a check of the outer surface 8 and the inner surface 9 erflogt, for this purpose, in turn, the illumination 17 is arranged above and the associated cameras 21 are arranged laterally and below the transparent bottom plate 22, for which purpose the special conveyor system 27 are adapted accordingly.
    Of course, it is possible that other structures, in particular other conveyor system 27 could be used. For example, it would be possible for the transport to take place via the transparent bottom plate 22 by a robot arm (not shown) or transport carriage 31. In the process, when using a robot arm, it can pick up the container 2 from the conveyor belt 6, briefly park it on the transparent bottom plate 22 or position it to receive the interior 9 and then deposit it again on the conveyor belt 6 for onward transport. When using a trolley 31, it is possible that the container 2 is placed on the trolley 31 from the conveyor belt 6 and then the trolley 31 guided laterally and driven by the camera 21 for the interior 9 leads. In this case, the transparent bottom plate 22 can be omitted since the transport carriage 31 can be equipped with such. Of course, it is also possible that instead of the conveyor belt 6 only trolley 31 are used to promote the container 2, which are guided along the main frame 23 and drive along, on a trolley 31 a
    Container 2 and the trolley 31 has a transparent transparent bottom plate 22 to check in the test system 15, the interior 9 of the container 2 can.
    It is also possible that the holding frame 18 for the illumination 17 is telescopically adjustable (not shown), so that a different adaptation of different sizes of containers 2 can be made. This can be done automatically, for example, in which the height of the containers 2 is detected before the containers enter the first test system 15, whereupon a corresponding adjustment of the distance 20 for optimum illumination is made by the illumination 17, this being stored for a short time, to also use the recorded height for the same container 2 for the second test system 16, so that only once the height must be detected.
    For the sake of order, it should be noted that the invention is not limited to the illustrated embodiments, but may also include further embodiments. For example, it is possible that pipes or a pipe system can also be used instead of the multiple web plates 3.
    权利要求:
    Claims (15)
    [1]
    Anspruch [en] A process for testing an injection-molded container (2) made of printing foils, in particular for containers (2) produced by in-mold labeling (IML), wherein the container (2) is fed to a testing station (7) and is checked in the test station (7) via a test system (15,16) of the container (2), characterized in that the container (2) in a storage position (10) is supplied to the test system (7) and the examination of an outer surface ( 8) as well as an inner surface (9) of the container (2), or vice versa, with transmitted light or infrared transmitted light.
    [2]
    2. The method according to claim 1, characterized in that the examination of the container (2) takes place in two successive steps in the storage position (10) of the container (2).
    [3]
    3. The method according to claim 1 or 2, characterized in that in the first step of the test system (15), a lighting (17) from above and the inclusion of the outer surface (8) of the container (2) takes place laterally.
    [4]
    4. The method according to any one of the preceding claims 1 to 3, characterized in that in the second step of the test system (16) the illumination (17) from above for the inner surface (9), wherein the inclusion of the inner surface (9) from below through a transparent bottom plate (22) takes place.
    [5]
    5. The method according to any one of the preceding claims 1 to 4, characterized in that in the second step of the test system (16) of the container (2) by a conveyor system (27) from a conveyor belt (6) is taken, then a transparent bottom plate (22 ) is guided, whereupon the container (2) in turn is deposited on the conveyor belt (6).
    [6]
    6. testing device for carrying out the method according to one or more of the preceding claims 1 to 3, characterized in that a supply device, in particular a conveyor belt (6) which feeds the container (2) in a test station (7), is provided the inspection station (7) is formed with optical inspection systems (15, 16), in particular with one or more cameras (21) for detecting a surface of the container (2), and a check of an outer surface (8) and an inner surface (9) of the Container (2) takes place in the supplied position.
    [7]
    7. Test device according to claim 6, characterized in that the test station (7) has at least two optical test systems (15 and 16), which are preferably arranged linearly one behind the other.
    [8]
    8. Testing device according to claim 6 or 7, characterized in that the test systems (15,16) for checking the outer surface (8) and the inner surface (9) of the container (2) in the storage position (10) are provided.
    [9]
    9. Testing device according to one or more of the preceding claims 6 to 8, characterized in that in the storage position (10) a bottom (13) of the container (2) protrudes into the height and the container (2) with the open end (13 a ) rests on the conveyor belt (6).
    [10]
    10. Test device according to one or more of the preceding claims 6 to 9, characterized in that the test system (7) has a lighting (17) which is equipped with transmitted light or infrared transmitted light and that for receiving the container (2), in particular a surface (8), one or more cameras (21) are arranged.
    [11]
    11 .Test device according to one or more of the preceding claims 6 to 10, characterized in that in the first test system (15), a check of the outer surface (8) of the container (2) takes place, in which the illumination (17) above the container (2 ), That is, parallel to the conveyor belt (6) is arranged and the cameras (21) are fastened laterally to the conveyor belt (6).
    [12]
    12. Test device according to one or more of the preceding claims 6 to 11, characterized in that in the second test system (16) the illumination (17) above the container (2) is arranged and one or more cameras (21) below a transparent bottom plate (22) over which the container (2) is guided, are arranged.
    [13]
    13. Testing device according to one or more of the preceding claims 6 to 12, characterized in that the container (2) in the second test system (16) by a conveyor system (27) is guided, which receives the container (2) from the conveyor belt (6) , moved over the transparent bottom plate (22) and again on the conveyor belt (6) turns off.
    [14]
    14. Test device according to one or more of the preceding claims 6 to 13, characterized in that the container (2) between the first and the second test system (15,16) is guided over a positioning element (26).
    [15]
    15. Test device according to one or more of the preceding claims 6 to 14, characterized in that the conveyor system (27) in the second test system (16) by a deflection rollers (28) guided belt (29) is arranged with interposed drive roller (30) , wherein the course of the belt (29), in particular the deflection rollers (28) and the drive roller (30), is aligned at an angle to the transparent bottom plate (22).
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    同族专利:
    公开号 | 公开日
    AT518335B1|2018-03-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4123173A1|1990-07-13|1992-01-16|Hajime Industries|TEST DEVICE FOR TRANSPARENT CONTAINERS|
    US5280170A|1992-12-22|1994-01-18|Emhart Glass Machinery Investments Inc.|Machine for inspecting the shape of a container having a two dimensional camera for viewing the shadow of the projection of the container|
    WO1997026091A1|1996-01-19|1997-07-24|Heuft Systemtechnik Gmbh|Device and process for inspection of objects, particularly beverage bottles|
    WO2014029470A1|2012-08-20|2014-02-27|Khs Gmbh|Inspection of the interior of a container from below through the base|DE102019134256A1|2019-12-13|2021-06-17|Bayerische Motoren Werke Aktiengesellschaft|Device and method for sorting containers for motor vehicle components|
    法律状态:
    2021-07-15| HC| Change of the firm name or firm address|Owner name: WITTMANN TECHNOLOGY GMBH, AT Effective date: 20210525 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA108/2016A|AT518335B1|2016-03-02|2016-03-02|Method for testing an injection-molded container made of printing foils|ATA108/2016A| AT518335B1|2016-03-02|2016-03-02|Method for testing an injection-molded container made of printing foils|
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