Molded product removal device

Abstract

To suppresses an impact transmitted to a support arm through a metal plate when a molded product is removed.SOLUTION: There is provided a molded product removal device 1 for removing a molded product 200 molded by a resin molding machine 100, comprising: a flat-shaped metal plate 10; a holding unit 40 that is fixed to the metal plate 10 and holds an injection residue portion 210 of the molded product 200; and a support arm 50 that movably supports the metal plate 10. The holding unit 40 has a deformable damper supported by a fixing portion to the metal plate 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a molded product removal device. [Background technology]

[0002] The following Patent Document 1 discloses a molded product removal device for removing a molded product produced by a resin molding machine. The molded product removal device has a flat metal plate and a gripping unit fixed to the metal plate for gripping the injection residue of the molded product, and moves the metal plate with the gripping unit gripping the injection residue of the molded product. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-106853 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned molded product removal device, the metal plate is supported movably on the support arm, and the gripping unit is fixed to the metal plate with screws. Therefore, when the ejector pin of the resin molding machine pushes out the molded product with the gripping unit gripping the injection residue of the molded product, an impact is transmitted to the support arm via the metal plate. If the impact transmitted to the support arm becomes excessive, adverse effects such as deformation of the support arm occur.

[0005] The present invention has been made in consideration of these points, and has an object to suppress the impact transmitted to the support arm via the metal plate when the molded product is removed. [Means for solving the problem]

[0006] In one aspect of the present invention, there is provided a molded product removal device for removing a molded product molded by a resin molding machine, the molded product removal device comprising: a flat metal plate; a gripping unit fixed to the metal plate and configured to grip an injection residue portion of the molded product; and a support arm movably supporting the metal plate, wherein the gripping unit has a deformable damper supported by a fixed portion to the metal plate.

[0007] In addition, the gripping unit may have a gripping portion that grips the molded product, a plate portion that supports the gripping portion on its upper surface, and a magnet portion that supports the lower surface of the plate portion and is fixed by magnetic force so as to be movably relative to the metal plate, and the fixing portion may be the magnet portion.

[0008] The damper may be a cylindrical elastic member, and may be provided such that its axial direction is aligned with a normal direction to the plate portion.

[0009] In addition, the damper may be located on the opposite side of the plate portion from the magnet portion, and the gripping unit may further have a clamping portion that clamps the plate portion and the damper between the plate portion and the magnet portion.

[0010] The dampers may be provided at four corners of the upper surface of the plate portion.

[0011] The molding machine may further include a suction portion to which the molded product extruded by an ejector pin of the resin molding machine is sucked while the gripping unit is gripping the injection residue portion.

[0012] The apparatus may further include a moving mechanism that moves the metal plate supported by the support arm between a gripping position where the gripping unit grips the molded product and a waiting position away from the resin molding machine, and a control unit that synchronizes the ejection of the molded product by the ejector pin and the movement of the metal plate from the gripping position to the waiting position by the moving mechanism. Effect of the Invention

[0013] According to the present invention, it is possible to suppress the impact transmitted to the support arm via the metal plate when the molded product is removed. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic diagram for explaining the configuration of a molded product removing device 1 according to one embodiment. [Diagram 2] FIG. 2 is a block diagram for explaining the configuration of the molded product removing device 1. [Diagram 3] 2 is a schematic diagram showing a suction unit 20 and a gripping unit 40 fixed to a metal plate 10. FIG. [Figure 4] FIG. 2 is a schematic diagram showing a gripping unit 40. [Diagram 5] FIG. 2 is a schematic diagram showing a gripping unit 40. [Figure 6] 6 is a cross-sectional view taken along line AA in FIG. 5. [Figure 7] FIG. 13 is a schematic diagram for explaining a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] <Outline of molding removal device> The configuration of a molded product removing device 1 according to one embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG.

[0016] Fig. 1 is a schematic diagram for explaining the configuration of a molded product removal apparatus 1 according to one embodiment. Fig. 2 is a block diagram for explaining the configuration of the molded product removal apparatus 1. Fig. 3 is a schematic diagram showing a suction unit 20 and a gripping unit 40 fixed to a metal plate 10. The molded product removal apparatus 1 is an apparatus for removing a molded product 200 molded by a resin molding machine 100.

[0017] One example of the resin molding machine 100 is an injection molding machine. The resin molding machine 100 has a mold 110 and an ejector pin 120. The mold 110 fills a cavity with molten resin to mold a molded product 200. The mold 110 is composed of a male mold and a female mold that can be opened and closed. The ejector pin 120 pushes out the molded product 200 held in the mold 110 when the mold 110 is opened.

[0018] When the ejector pins 120 push out the molded product 200 while the mold 110 is open, the molded product removal device 1 suction-holds and removes the molded product 200. As shown in Fig. 1, the molded product removal device 1 has a metal plate 10, a suction unit 20, a gripping unit 40, and a support arm 50. As shown in Fig. 2, the molded product removal device 1 also has a movement mechanism 60, a detection unit 70, and a control unit 80.

[0019] The metal plate 10 is formed in a flat plate shape. Here, the metal plate 10 has a rectangular shape as shown in FIG. 3, but is not limited thereto. The metal plate 10 is movable between a standby position and a removal position (position shown in FIG. 1) from which a molded product is removed. When the metal plate 10 is located at the standby position, the resin molding machine 100 injection molds a molded product 200. A hole 12 (FIG. 3) is provided in the center of the metal plate 10 to pass an injection residue portion 210 of the molded product 200 therethrough.

[0020] As shown in Fig. 3, a plurality of suction units 20 are provided on the metal plate 10 in a state spaced apart from each other. Each of the plurality of suction units 20 has an suction portion 24 capable of suctioning the molded product 200. When the metal plate 10 is located at the removal position, the suction portion 24 vacuum-sucks the molded product 200 pushed out by the ejector pin 120. Since the plurality of suction units 20 are movably fixed to the metal plate 10 by magnets, an operator can adjust the position of the suction unit 20. As a result, even if the molded products 200 have different sizes and shapes, it is possible to stably suction the molded products 200 by adjusting the positions of the plurality of suction units 20.

[0021] The suction unit 20 is connected to the negative pressure generating part via a flow path 26. The flow path 26 is, for example, a deformable tube. The negative pressure generating part is a device that creates a negative pressure inside the suction unit 20 and causes the suction unit 20 to adsorb the molded product 200. For example, the negative pressure generating part creates a negative pressure inside the suction unit 20 by sucking in air inside the suction unit 20 via the flow path 26.

[0022] The gripping unit 40 grips the molded product 200. Specifically, the gripping unit 40 grips an injection residue portion 210 ( FIG. 1 ) of the molded product 200. With the gripping unit 40 gripping the injection residue portion 210, the ejector pin 120 pushes out the molded product 200, so that the molded product 200 is adsorbed to the suction unit 20. The gripping unit 40 is movably fixed to the metal plate 10. Details of the gripping unit 40 will be described later.

[0023] The support arm 50 movably supports the metal plate 10. For example, the support arm 50 supports an end of the metal plate 10. The support arm 50 is lightweight from the viewpoint of increasing the moving speed of the metal plate 10, and is formed, for example, in a rod shape.

[0024] The moving mechanism 60 is a mechanism for moving the metal plate 10. Specifically, the moving mechanism 60 moves the metal plate 10 supported by the support arm 50 between a gripping position where the gripping unit 40 grips the molded product 200 and a standby position away from the resin molding machine 100. The gripping position of the gripping unit 40 is also a removal position for the molded product 200. The moving mechanism 60 includes a drive source (motor) for moving the support arm 55 supporting the metal plate 10, and a guide member for guiding the movement of the support arm 50.

[0025] The detection unit 70 detects the state of the resin molding machine 100. For example, the detection unit 70 detects whether the resin molding machine 100 has performed injection molding of the molded product 200. Specifically, the detection unit 70 can detect the open / closed state of the mold 110, and determines that the injection molding is completed when the mold 110 is open. The detection unit 70 may also detect the position of the metal plate 10.

[0026] The control unit 80 controls the operation of the molded product removal device 1. For example, when the detection unit 70 detects the completion of injection molding, the control unit 80 causes the moving mechanism 60 to move the metal plate 10 from the standby position to the removal position. Next, the control unit 80 causes the gripping unit 40 to grip the injection residue portion 210 of the molded product 200. Then, the control unit 80 synchronizes the pushing out of the molded product 200 by the ejector pin 120 and the movement of the metal plate 10 from the removal position (the gripping position of the gripping unit 40) to the standby position by the moving mechanism 60. As a result, the molded product 200 pushed out by the ejector pin 120 is adsorbed by the suction unit 20 fixed to the metal plate 10 that has started to move from the removal position. Thereafter, the molded product removal device 1 moves the metal plate 10 to the standby position, thereby removing the molded product 200 from the resin molding machine 100.

[0027] <Detailed Configuration of Grip Unit 40> Figures 4 and 5 are schematic diagrams showing the gripping unit 40. Figure 6 is a cross-sectional view taken along line AA in Figure 5. The gripping unit 40 has a main body portion 41, a gripping portion 42, a plate portion 43, a magnet portion 44, a damper 45, a spacer 46, a shaft portion 47, and a nut 48.

[0028] The main body 41 is a part that operates the grip part 42. The main body 41 is located in the center of the plate part 43, and is fixed to the plate part 43 with screws. The main body 41 communicates with a flow path part 49 through which air flows, and air can be supplied into the main body 41.

[0029] The gripping portion 42 grips the injection residue portion 210 of the molded product 200. The gripping portion 42 is connected to the main body portion 41. The gripping portion 42 is located at a position protruding from the plate portion 43. Specifically, the gripping portion 42 is disposed at the portion of the hole 12 of the metal plate 10 as shown in FIG. 3. This allows the gripping portion 42 to continue gripping the injection residue portion 210 that has passed through the hole 12 when the ejector pin 120 pushes out the molded product 200.

[0030] The gripper 42 can be opened and closed, clamping the injection residue portion 210 when closed and releasing the injection residue portion 210 when open. The gripper 42 opens and closes when air (positive pressure air) is supplied into the main body portion 41. That is, when air is supplied into the main body portion 41 via the flow path portion 49, the gripper 42 closes, and when air is not supplied, the gripper 42 opens. The gripper 42 operates in conjunction with the operation of the ejector pin 120 of the resin molding machine 100.

[0031] The upper surface of the plate portion 43 supports the grip portion 42. Specifically, the plate portion 43 supports the grip portion 42 via the main body portion 41. The plate portion 43 has a rectangular shape with a predetermined thickness.

[0032] 5, the magnet portion 44 is located below the plate portion 43 and supports the lower surface of the plate portion 43. The magnet portion 44 is fixed by magnetic force so as to be movable relative to the metal plate 10. Therefore, the magnet portion 44 functions as a fixing portion that fixes the gripping unit 40 to the metal plate 10. The magnet portion 44 is located at the four corners of the plate portion 43 and surrounds the main body portion 41. Note that the magnet portion 44 does not have to be located at the four corners of the plate portion 43.

[0033] The damper 45 has a function of absorbing the impact acting on the gripping unit 40 when the ejector pin 120 of the resin molding machine 100 pushes out the molded product 200, thereby suppressing the impact from being transmitted to the metal plate 10. The damper 45 is deformable, and when an impact acts on the gripping unit 40, the damper 45 deforms to suppress the impact from being transmitted to the metal plate 10.

[0034] As described above, the control unit 80 controls the pushing out of the molded product 200 by the ejector pins 120 and the movement of the metal plate 10 from the removal position so as to be synchronized. However, due to external disturbances or the like, a timing discrepancy may occur between the pushing out of the molded product 200 by the ejector pins 120 and the movement of the metal plate 10 from the removal position. In this case, when the ejector pins 120 push out the molded product 200, an impact is likely to act on the gripping unit 40 gripping the injection residue portion 210. Then, the impact acting on the gripping unit 40 is likely to be transmitted to the metal plate 10 via the plate portion 43 and the magnet portion 44. In contrast, in this embodiment, by providing the damper 45 to the gripping unit 40, even if a timing discrepancy occurs between the pushing out of the molded product 200 by the ejector pin 120 and the movement of the metal plate 10 from the removal position, the damper 45 absorbs the impact acting on the gripping unit 40, thereby preventing the impact from being transmitted to the metal plate 10. As a result, deformation or the like of the support arm 50 due to the impact transmitted to the metal plate 10 can also be prevented.

[0035] The damper 45 is supported by the magnet portion 44. Specifically, as shown in Fig. 5, the lower surface of the damper 45 is supported by the magnet portion 44 via the plate portion 43. An impact acting on the gripping unit 40 can be transmitted to the metal plate 10 via the magnet portion 44, but since the damper 45 is supported by the magnet portion 44, the impact transmitted to the magnet portion 44 is absorbed by the damper 45. As a result, the transmission of the impact to the metal plate 10 via the magnet portion 44 can be suppressed.

[0036] The damper 45 is a cylindrical elastic member as shown in Fig. 6. The axial direction of the damper 45 is aligned with the normal direction of the plate portion 43. The height of the damper 45 is greater than the height of the main body portion 41. This makes the damper 45 more easily deformable in the axial direction, and therefore makes it easier to absorb the impact acting on the gripping unit 40 when the ejector pin 120 pushes out the molded product 200 in the axial direction.

[0037] 4, the dampers 45 are provided at the four corners of the upper surface of the plate portion 43. That is, the dampers 45 are located around the main body portion 41. This allows the four dampers 45 located around the main body portion 41 to disperse and absorb the impact acting on the main body portion 41 via the grip portion 42.

[0038] 5, the damper 45 is located on the opposite side of the plate portion 43 from the magnet portion 44. As a result, the plate portion 43 is located close to the metal plate 10, and therefore the flow path portion 49 that supplies air to the main body portion 41 can also be located close to the metal plate 10. However, this is not limited to the above, and for example, the damper 45 may be located between the plate portion 43 and the magnet portion 44.

[0039] 6, the spacer 46 is a sandwiching portion that sandwiches the plate portion 43 and the damper 45 between the magnet portion 44. Therefore, the damper 45 deforms between the plate portion 43 and the spacer 46. The spacer 46 is a cylindrical member with a predetermined thickness, and has a through hole 46a formed in the center.

[0040] The shaft portion 47 passes through the through hole 43a of the plate portion 43, the cylindrical hole 45a of the damper 45, and the through hole 46a of the spacer 46. One axial end of the shaft portion 47 is fixed to the magnet portion 44. The other axial end of the shaft portion 47 is formed with a male screw.

[0041] The nut 48 is screwed into the other axial end of the shaft portion 47. Specifically, a female thread provided on the inside of the nut 48 is screwed into a male thread at the other axial end of the shaft portion 47. This fixes the plate portion 43, the damper 45, and the spacer 46, which are sandwiched between the magnet portion 44 and the nut 48.

[0042] (Modification) The gripping unit 40, which is fixed to the metal plate 10 by the magnet portion 44, can adjust its position relative to the metal plate 10. Specifically, when an operator applies a force to the magnet portion 44 that is greater than the magnetic force, the magnet portion 44 becomes movable relative to the metal plate 10. This allows the gripping unit 40 to be fixed at any position relative to the metal plate 10.

[0043] 7 is a schematic diagram for explaining a modified example. In the modified example, the gripping unit 40 is rotated 90 degrees clockwise about the hole 12 with respect to the gripping unit 40 shown in FIG. 3. The worker adjusts the arrangement and orientation of the gripping unit 40 in consideration of the arrangement of the multiple suction units 20 fixed to the metal plate 10.

[0044] <Effects of this embodiment> The molded product removing device 1 of the above-described embodiment includes a gripping unit 40 that is fixed to the metal plate 10 and grips the molded product 200, and a support arm 50 that movably supports the metal plate 10. The gripping unit 40 also has a deformable damper 45 supported by a magnet portion 44 that is a fixed portion to the metal plate 10. Since the gripping unit 40 has the damper 45, the impact acting on the gripping unit 40 when the ejector pin 120 pushes out the molded product 200 is absorbed by the damper 45. This makes it possible to prevent the impact acting on the gripping unit 40 from being transmitted to the metal plate 10 via the magnet portion 44. As a result, it is also possible to prevent the support arm 50 from being deformed by the impact transmitted to the metal plate 10.

[0045] Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. For example, all or part of the device can be configured by distributing or integrating functionally or physically in any unit. In addition, new embodiments resulting from any combination of multiple embodiments are also included in the embodiments of the present invention. The effect of the new embodiment resulting from the combination combines the effect of the original embodiment. [Explanation of symbols]

[0046] 1 Molded product removal device 10 metal plate 24 Adsorption part 40 Grasping unit 42 Gripping part 43 Plate section 44 Magnet section 45 Damper 46 Spacer 50 Support Arm 60 Moving mechanism 80 Control section 100 Resin molding machine 200 Molded products 210 Injection residue part

Claims

1. A molded product removal device for removing a molded product molded by a resin molding machine, A flat metal plate, a gripping unit fixed to the metal plate and configured to grip an injection residue of the molded product; a support arm that movably supports the metal plate; Equipped with The gripping unit has a deformable damper supported on a fixed portion to the metal plate. Molded product removal device.

2. The gripping unit includes: A gripping portion that grips the molded product; A plate portion supporting the gripping portion on an upper surface thereof; a magnet portion that supports a lower surface of the plate portion and is fixed by a magnetic force so as to be movable relative to the metal plate, The fixed portion is the magnet portion. The molded product removal device according to claim 1.

3. The damper is a cylindrical elastic member, and is provided such that its axial direction is aligned with a normal direction of the plate portion. The molded product removing device according to claim 2.

4. the damper is located on the opposite side of the plate portion from the magnet portion, The gripping unit further includes a clamping portion that clamps the plate portion and the damper between the clamping portion and the magnet portion. The molded product removing device according to claim 2.

5. The dampers are provided at the four corners of the upper surface of the plate portion. The molded product removing device according to claim 2.

6. a suction section to which the molded product extruded by an ejector pin of the resin molding machine is sucked while the gripping unit grips the injection residue, The molded product removal device according to claim 1.

7. a moving mechanism that moves the metal plate supported by the support arm between a gripping position where the gripping unit grips the molded product and a standby position away from the resin molding machine; and a control unit that synchronizes the ejection of the molded product by the ejector pin and the movement of the metal plate from the gripping position to the standby position by the movement mechanism. The molded product removing device according to claim 6.

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