Demolding device and demolding method

Abstract

To provide a novel demolding device.SOLUTION: A demolding device takes out a resin molded article having a first end portion and a second end portion opposite to the first end portion, from an opened mold. The demolding device comprises: a long-length support body; a manipulator for selectively moving the long-length support body to a first position along the first end portion and a second position along the second end portion; a first gripping part installed on the long-length support body, and capable of gripping the first end portion when the long-length support body is positioned at the first position; and a second gripping part installed on the long-length support body, and positioned spaced apart from the first gripping part in the short-length direction of the long-length support body, and capable of gripping the second end portion when the long-length support body is positioned at the second position.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a demolding device and a demolding method for removing a resin molded product from an opened mold. [Background technology]

[0002] One type of automotive interior part is a resin molded product that includes a foamed resin molded body and a sheet body laminated on the foamed resin molded body. Such a resin molded product is manufactured by foaming and curing a foamed resin raw material in the cavity of the lower mold with the sheet body sandwiched between an upper mold and a lower mold. The foamed resin raw material becomes a foamed resin molded body integrally molded with the sheet body through foaming and curing. After the upper mold is opened from the lower mold, this resin molded product is removed from the lower mold and transported to a production line for the next process (for example, a trimming process in which the shape of the resin molded product is adjusted by partially cutting off the sheet body).

[0003] Patent Document 1 discloses a demolding device that removes a resin molded product from an open mold. This demolding device is equipped with four arms that can move independently and four chuck units attached to the four arms. The demolding device removes the resin molded product from the lower mold by moving the four arms while the four chuck units grip the front, back, left and right sides of the resin molded product. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 2783974 Summary of the Invention [Problem to be solved by the invention]

[0005] The present disclosure provides a novel demolding device that differs from the demolding device described in Patent Document 1. [Means for solving the problem]

[0006] A demolding device according to an embodiment of the present disclosure removes a resin molded product having a first end and a second end opposite to the first end from an opened mold. The demolding device includes a long support, a manipulator that selectively moves the long support to a first position along the first end and a second position along the second end, a first gripping part attached to the long support and capable of gripping the first end when the long support is located at the first position, and a second gripping part attached to the long support and positioned away from the first gripping part in the short direction of the long support and capable of gripping the second end when the long support is located at the second position. Effect of the Invention

[0007] The present disclosure can provide a novel demolding device. [Brief description of the drawings]

[0008] [Figure 1] 1 is a top view showing a resin molded product being removed from a mold by a demolding device according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a top view showing a demolding device according to an embodiment of the present disclosure. [Diagram 3] FIG. 2 is an exploded perspective view showing a demolding device according to an embodiment of the present disclosure. [Figure 4] FIG. 4 is a front view showing the operation of the demolding device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] FIG. 1 is a top view showing a resin molded product removed from a mold by a demolding device according to an embodiment of the present disclosure. The resin molded products 60 and 160 include a plate-shaped foamed resin molded body 61 and a sheet body 62 laminated on the foamed resin molded body 61. The foamed resin molded body 61 is formed from polyurethane, polyolefin, or other foamed resin. The sheet body 62 is formed from nonwoven fabric, woven fabric, knitted fabric, genuine leather, synthetic leather, resin film, or other sheets. The resin molded product 60 is used, for example, for a left pad placed under the feet of the left rear seat of an automobile. The resin molded product 160 is used, for example, for a right pad placed under the feet of the right rear seat of an automobile.

[0010] In this embodiment, both the resin molded products 60 and 160 are rectangular and have a first end 60a and a second end 60b opposite thereto. The length of the second end 60b is approximately the same as the length of the first end 60a. The foamed resin molded body 61 is polygonal, not a simple rectangle, and has a third end 61a and a fourth end 61b opposite thereto. In the resin molded product 60, the length of the fourth end 61b is shorter than the length of the third end 61a. Conversely, in the resin molded product 160, the length of the fourth end 61b is longer than the length of the third end 61a.

[0011] In this embodiment, both the resin molded products 60 and 160 are transported on the same transport line. The resin molded products 60 and 160 proceed on the transport line to the removal area while being placed on the opened mold, and are removed from the mold by a demolding device when they arrive at the removal area.

[0012] 2 is a top view showing a demolding device according to an embodiment of the present disclosure. The demolding device 10 is installed in an unloading area and removes the resin molded products 60, 160 from the opened mold. The demolding device 10 carries the removed resin molded products 60, 160 to the production line for the next process (for example, a trimming process in which the shape of the resin molded products 60, 160 is adjusted by partially cutting off the sheet body 62).

[0013] In this embodiment, the demolding device 10 removes the resin molded product 60 from the mold by lifting up the first end 60a of the resin molded product 60. In the resin molded product 60, the third end 61a is longer than the fourth end 61b. Therefore, in the resin molded product 60, the first end 60a has a higher adhesive strength between the sheet body 62 and the foamed resin molded product 61 than the second end 60b. By lifting up the first end 60a of the resin molded product 60, the foamed resin molded product 61 is prevented from peeling off from the sheet body 62. Conversely, in the resin molded product 160, the fourth end 61b is longer than the third end 61a. Therefore, in the resin molded product 160, the second end 60b has a higher adhesive strength between the sheet body 62 and the foamed resin molded product 61 than the first end 60a. By lifting up the second end 60b of the resin molded product 160, the foamed resin molded product 61 is prevented from peeling off from the sheet body 62.

[0014] The demolding apparatus 10 includes a long support body 20. The long support body 20 may have substantially the same length as the first end portion 60a and the second end portion 60b of the resin molded product 60, 160, or may be longer than the first end portion 60a and the second end portion 60b.

[0015] The demolding device 10 further includes a manipulator 30 that selectively moves the long support 20 to a first position 33 along the first end 60a and a second position 34 along the second end 60b. In this embodiment, the manipulator 30 includes a multi-joint arm 31 and a controller 32 that moves the multi-joint arm 31. The multi-joint arm 31 is connected to the long support 20. The controller 32, in accordance with a computer program, moves the multi-joint arm 31 to place the long support 20 at the first position 33 when the resin molded product 60 arrives at the removal area, and moves the multi-joint arm 31 to place the long support 20 at the second position 34 when the resin molded product 160 arrives at the removal area.

[0016] The demolding device 10 further includes a first gripping portion 40 attached to the elongated support 20 and capable of gripping the first end portion 60a when the elongated support 20 is located at the first position 33.

[0017] The demolding device 10 further includes a second gripping portion 50 attached to the elongated support 20, positioned away from the first gripping portion 40 in the short direction of the elongated support 20, and capable of gripping the second end portion 60b when the elongated support 20 is positioned at the second position 34.

[0018] 3 is an exploded perspective view showing a demolding device according to an embodiment of the present disclosure. The long support 20 is, for example, a bracket made of a metal plate. The long support 20 has a base plate 21 and a pair of reinforcing ribs 22 and 23 rising from the base plate 21.

[0019] The first gripping unit 40 includes a plurality of (six in this embodiment) first chucks 41a, 41b, 41c, 41d, 41e, and 41f aligned in the longitudinal direction B of the elongated support 20. The second gripping unit 50 includes a plurality of (six in this embodiment) second chucks 51a, 51b, 51c, 51d, 51e, and 51f aligned in the longitudinal direction B of the elongated support 20.

[0020] The first chuck 41a includes a first fixed claw 42 and a first movable claw 43 that is movable in the height direction C relative to the first fixed claw 42. The first chuck 41a clamps a first end portion 60a of the resin molded product 60 between the first fixed claw 42 and the first movable claw 43. The first chucks 41b to 41f are similar.

[0021] The second chuck 51a includes a second fixed claw 52 and a second movable claw 53 that is movable in the height direction C relative to the second fixed claw 52. The second chuck 51a clamps the second end 60b of the resin molded product 160 between the second fixed claw 52 and the second movable claw 53. The second chucks 51b to 51f are similar.

[0022] In this embodiment, the second chuck 51a is disposed at the same position as the first chuck 41a in the longitudinal direction B of the long support 20. Similarly, each of the second chucks 51b to 51f is disposed at the same position as the corresponding one of the first chucks 41b to 41f in the longitudinal direction B of the long support 20. However, this is not limiting, and the second chucks 51a to 51f may be disposed at a position different from the first chucks 41a to 41f in the longitudinal direction B of the long support 20.

[0023] In this embodiment, the second chuck 51a moves in common with the first chuck 41a corresponding to the second chuck 51a. Specifically, the second chuck 51a shares one actuator 44 with the first chuck 41a. This sharing of the actuator 44 simplifies the control of the demolding device 10. Similarly, each of the second chucks 51b to 51f moves in common with a corresponding one of the first chucks 41b to 41f. However, this is not limited to the above, and the second chucks 51a to 51f and the first chucks 41a to 41f may move individually.

[0024] In this embodiment, the first chucks 41a, 41b and the second chucks 51a, 51b form one unit by sharing one actuator 44. This sharing of the actuator 44 further simplifies the control of the demolding device 10.

[0025] The first chucks 41a-41f may be arranged at a plurality of different pitches or at a common pitch in the longitudinal direction B. Similarly, the second chucks 51a-51f may be arranged at a plurality of different pitches or at a common pitch in the longitudinal direction B. In this embodiment, the first chucks 41a-41f and the second chucks 51a-51f are arranged at pitches P1-P5. The pitch P2 is longer than P1 and P3-P5. The plurality of different pitches is suitable for removing a plurality of resin molded products 60 of different sizes.

[0026] 4 is a front view showing the operation of the demolding device according to the embodiment of the present disclosure. A resin molded product 60 is placed on an open mold 70. A foamed resin molded body 61 is located in a cavity 71 of the mold 70. A sheet body 62 is placed on the upper surface of the mold 70. A first end 60a and a second end 60b of the resin molded product 60 protrude from the mold 70.

[0027] As shown in (a) of FIG. 4, the long support 20 approaches the first position 33 with the first chuck 41a and the second chuck 51a open. As shown in (b) of FIG. 4, when the long support 20 arrives at the first position 33, the first chuck 41a grips the first end 60a of the resin molded product 60 (more specifically, the sheet body 62). The long support 20 is gradually lifted, and the resin molded product 60 is gradually peeled off from the mold 70. As shown in (c) of FIG. 4, the long support 20 completely removes the resin molded product 60 from the mold 70. In (c) of FIG. 4, the long support 20 rotates about 90 degrees from (a) of FIG. 4, and the resin molded product 60 is naturally suspended, thereby preventing damage to the resin molded product 60.

[0028] Although the embodiment of the present disclosure has been described above, the present disclosure is not limited to the above embodiment, and various modifications are possible without departing from the gist of the invention. In particular, the examples described in this specification can be arbitrarily combined as necessary. [Explanation of symbols]

[0029] 10: Demolding device 20: Long support 30: Manipulator 40: 1st grip part 50:Second grip part 60: Resin molded product

Claims

1. A demolding device for removing a resin molded product from an opened mold, the resin molded product having a first end and a second end opposite to the first end, A long support; a manipulator for selectively moving the elongate support to a first position along the first end and a second position along the second end; a first gripping portion attached to the elongated support and capable of gripping the first end portion when the elongated support is located at the first position; a second gripping portion attached to the elongated support, positioned away from the first gripping portion in the short-side direction of the elongated support, and capable of gripping the second end when the elongated support is positioned at the second position; Demolding equipment.

2. The first gripping portion includes a plurality of first chucks arranged in a longitudinal direction of the elongated support body, The second gripping portion includes a plurality of second chucks arranged in the longitudinal direction of the elongated support body. The demolding apparatus according to claim 1 .

3. The first chucks are arranged at a plurality of different pitches, The second chucks are arranged at a plurality of different pitches. The demolding apparatus according to claim 2.

4. The first gripping portion includes a plurality of first chucks, The second gripping portion includes a plurality of second chucks, The demolding device further includes an actuator for commonly moving the pair of the first chuck and the second chuck. The demolding apparatus according to claim 1 .

5. The resin molded product includes a plate-shaped foamed resin molded body and a sheet body laminated on the foamed resin molded body, The first gripping portion and the second gripping portion grip the sheet body. The demolding apparatus according to claim 1 .

6. A demolding method for removing a resin molded product from an opened mold, the resin molded product having a first end and a second end opposite to the first end, comprising the steps of: a manipulator selectively moving an elongate support attached to the manipulator to a first position along the first end and a second position along the second end; When the elongated support is located at the first position, the first end is gripped by a first gripping portion attached to the elongated support; while the first end portion is being gripped by the first gripping portion, the manipulator is used to move the elongated support away from the first position to remove the resin molded product from the metal mold; When the elongated support is located at the second position, the second end is gripped by a second gripping portion attached to the elongated support and spaced from the first gripping portion in a short side direction of the elongated support, With the second end portion being gripped by the second gripping portion, the manipulator is used to move the elongated support away from the second position to remove the resin molded product from the metal mold. Demolding method.

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