An automated tooling for assembling thin-shell plastic parts

Abstract

The present invention discloses an automated tooling for assembling thin-shell plastic parts. The tooling comprises an upper mold portion and a lower movable portion that can automatically close the mold, and a positioning base plate that is fixed in an assembly position. The positioning base plate is used to position a plurality of horizontally spaced plastic components. The upper mold portion comprises a liftable upper mold base. The lower side of the upper mold base is provided with a plurality of horizontally spaced contoured positioning grooves that align with the thin-shell plastic parts. The upper mold base is also equipped with a plurality of vacuum suction assemblies that correspond one-to-one with the contoured positioning grooves and are used to suction and adhere the thin-shell plastic parts to the inner walls of the contoured positioning grooves. The present invention aims to address the problems of low efficiency, high defect rate, and poor stability in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of automated tooling, in particular to an automated tooling for assembling thin-shell plastic parts. Background Art

[0002] Since thin-shell plastic parts are relatively flexible, they are easily deformed by pressure during the assembly process. That is, in the process of covering the thin-shell plastic parts on the upper side of the plastic component, since the thin-shell plastic parts are relatively soft in texture, the thin-shell plastic parts are easily deformed by pressure during the press-fitting process. More specifically, the thin-shell plastic parts are easily flanging during the process of installing the plastic component, resulting in poor assembly and then defective products, which is not conducive to large-scale automated production and seriously affects assembly efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide an automated tooling for assembling thin-shell plastic parts, so as to solve the problems of low efficiency, high defect rate and poor stability existing in the prior art.

[0004] The object of the present invention is achieved as follows: an automated tooling for assembling thin-shell plastic parts, used to assemble thin-shell plastic parts on the upper side of plastic components, comprising an upper mold portion and a lower movable portion that can automatically close the mold up and down, and a positioning base plate in an assembly position and relatively fixed during assembly, wherein the positioning base plate is used to position a plurality of horizontally spaced plastic components, and the upper mold portion includes a liftable upper mold base;

[0005] The lower side of the upper die base is provided with a plurality of contour positioning grooves spaced apart in the horizontal direction, and the thin shell plastic parts are consistent with the contour positioning grooves;

[0006] The upper die base is also equipped with a plurality of vacuum adsorption components arranged in a horizontal direction and corresponding to the contour positioning grooves one by one. The vacuum adsorption components are used to adsorb the thin shell plastic parts to fit the inner wall of the contour positioning groove.

[0007] The automated tooling also includes a plurality of core rod assemblies mounted on the lower assembly frame and corresponding to the contoured positioning grooves one by one;

[0008] The mandrel assembly comprises:

[0009] A core rod fixing slider, wherein the core rod fixing slider is connected to the lower assembly frame in a lifting and movable manner;

[0010] At least one core rod, the core rod being fixedly connected to the upper side of the core rod fixed slider;

[0011] The core rod movement cylinder has a cylinder barrel fixedly connected to the lower assembly frame, and a piston rod of the core rod movement cylinder is upwardly connected to the lower side of the core rod fixed slider to push the core rod upward to press the thin shell plastic part against the inner wall of the contoured positioning groove.

[0012] The beneficial effects of the present invention are:

[0013] During the press-fitting process, a vacuum suction cup is used to adsorb and fix the thin-shell plastic parts in the contoured positioning groove. A core rod is used to push the softer thin-shell plastic parts against the contoured positioning groove. The core rod is used to correct the shape of the thin-shell plastic parts, thereby controlling the deformation of the thin-shell plastic parts during the assembly process, reducing production costs and improving the assembly yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0015] Figure 2 It is a schematic diagram of the installation structure of the side mold base.

[0016] Figure 3 It is a schematic diagram of the lower active part.

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the upper die base.

[0018] Figure 5 This is a bird's-eye view of the upper die base.

[0019] Figure 6 yes Figure 5 AA section view in.

[0020] Figure 7 It is an assembly diagram of the upper mold part and the lower movable part. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-7 The present invention is further described with reference to the accompanying drawings and specific examples.

[0022] like Figure 1 As shown, in order to assemble a number of thin-shell plastic parts 4 one by one on the upper side of a number of plastic components 6 at one time, an automated tooling for assembling thin-shell plastic parts is proposed, which includes an upper mold part and a lower movable part that can automatically close the mold up and down, and a positioning base plate 7 that is in an assembly position and relatively fixed in position during assembly. The positioning base plate 7 is provided with a number of positioning grooves for positioning a number of horizontally spaced plastic components 6. In this embodiment, the positioning base plate 7 is a connecting plate of a large plate fixture and a turntable.

[0023] like Figure 7As shown, the upper mold part includes a liftable upper mold base 3, and the lower side of the upper mold base 3 is provided with a plurality of contoured positioning grooves 3a arranged at intervals in the horizontal direction. In order to better position the thin-shell plastic part 4, the thin-shell plastic part 4 is consistent with the contoured positioning grooves 3a, that is, the surface of the thin-shell plastic part 4 is similar to or identical to the surface shape of the contoured positioning grooves 3a, forming surface contact.

[0024] The upper die base 3 is also equipped with a plurality of vacuum adsorption components arranged in a horizontal direction and corresponding to the contour positioning grooves 3a. The vacuum adsorption components are used to adsorb the thin shell plastic parts 4 to fit the inner wall of the contour positioning grooves 3a.

[0025] As a preferred solution for vacuum adsorption components, combined with Figure 4-6 As shown, the above-mentioned vacuum adsorption component includes an insert 3b and a vacuum suction cup 3c connected to a vacuum extraction device. The insert 3b is embedded in the upper mold base 3. The vacuum suction cup 3c is inserted into the insert 3b so that its adsorption end is located on the inner wall of the contoured positioning groove 3a, thereby facilitating the adsorption and fixing of the thin shell plastic part 4.

[0026] like Figure 1 、 7 As shown, in order to make the thin-shell plastic part 4 fit the inner wall of the contoured positioning groove 3a more stably, the automated tooling further includes a plurality of core rod assemblies mounted on the lower assembly frame 11 and corresponding to the contoured positioning grooves 3a.

[0027] The mandrel assembly comprises:

[0028] The mandrel is fixedly connected to the slider 15, and the mandrel is fixedly connected to the lower assembly frame 11 in a lifting and movable manner;

[0029] Two core rods 16, the core rods 16 are fixedly connected to the upper side of the core rod fixed slider 15, and the number of core rods 16 is not limited, and there can be more than two;

[0030] The core rod movement cylinder 14 has a cylinder barrel fixedly connected to the lower assembly frame 11, and a piston rod of the core rod movement cylinder 14 is upwardly connected to the lower side of the core rod fixed slider 15 to push the core rod 16 upward to press the thin shell plastic part 4 against the inner wall of the contoured positioning groove 3a.

[0031] Among them, in order to prevent the core rod 16 from crushing the thin-shell plastic part 4, it is necessary to limit the rising height of the core rod 16. Therefore, the lower movable seat 8 is connected with a slider limit plate 17 for limiting the rising height of the core rod fixed slider 15. The slider limit plate 17 is used to press against the core rod fixed slider 15 to limit the height position of the core rod 16, thereby ensuring the position gap between the core rod 16 and the thin-shell plastic part 4. The core rod 16 can correct the shape of the thin-shell plastic part 4 without crushing the thin-shell plastic part 4.

[0032] like Figure 2 As shown, in order to limit the position of the plastic component 6, the automated tooling also includes a side mold part, which includes a side mold cylinder 18, a side mold base 19 and two guide rods 20. The cylinder barrel of the side mold cylinder 18 is fixed on the frame 21, and the piston rod of the side mold cylinder 18 is fixedly connected to the side mold base 19. The two guide rods 20 are fixedly connected to the back of the side mold base 19 and movably pass through the frame 21 to guide the movement direction of the side mold base 19. The front of the side mold base 19 is provided with a number of mating grooves that are mated one by one with the plastic component 6 during assembly.

[0033] like Figure 7 As shown, in order to further limit the position of the plastic component 6, a number of auxiliary positioning blocks 9 corresponding to the plastic components 6 are fixed on the upper surface of the lower movable seat 8. The upper ends of the auxiliary positioning blocks 9 are provided with auxiliary positioning grooves 9a. During assembly, the plastic component 6 is inserted downward into the auxiliary positioning grooves 9a.

[0034] The above-mentioned upper mold base 3 is fixedly connected to the limiting frame 5, and the lower movable part includes a lower assembly frame 11 that can be raised and lowered. A lower movable seat 8 is fixed on the upper side of the lower assembly frame 11, and at least two buffer springs 10 are provided on the upper surface of the lower movable seat 8. When assembled, the lower assembly frame 11 presses the buffer spring 10 downward to ensure that the gap between the core rod 16 and the upper mold base 3 is greater than the thickness of a thin shell plastic part 4.

[0035] like Figure 1 As shown, the above-mentioned upper mold part also includes an upper mold cylinder 1 and an upper lifting frame 2. The upper lifting frame 2 is movably connected to the frame 21. The cylinder barrel of the upper mold cylinder 1 is fixedly connected to the frame 21. The piston rod of the upper mold cylinder 1 is downwardly connected to the upper lifting frame 2. The upper mold base 3 is fixedly connected to the upper lifting frame 2.

[0036] like Figure 3 As shown, the above-mentioned lower movable part also includes a lower driving cylinder 13 and a lower connecting support plate 12 fixedly connected to the lower combined frame 11. The lower combined frame 11 is connected to the frame 21 for lifting and lowering. The cylinder barrel of the lower driving cylinder 13 is fixedly connected to the frame 21, and the piston rod of the lower driving cylinder 13 is upwardly connected to the lower connecting support plate 12.

[0037] The working process of this embodiment is as follows:

[0038] First, a large plate jig assembly loaded with a plurality of plastic components 6 is sent to the assembly station, that is, the positioning substrate 7 with the plurality of plastic components 6 is in the assembly position, and the plurality of plastic components 6 are arranged in a horizontal line on the positioning substrate 7.

[0039] Then, the side mold cylinder 18 drives the lower mold base 19 to abut against the side of the plastic component 6 (such as Figure 2 As shown), the degree of freedom of the plastic component 6 is limited.

[0040] The upper die cylinder 1 drives the upper lifting frame 2 and its upper die base 3 to move downward to the assembly position, and the vacuum suction cup 3c of the upper die base 3 sucks the thin shell plastic part 4 (such as Figure 5 As shown), the thin-shell plastic part 4 is fixed in the contour positioning groove 3a by vacuum adsorption, and the lower driving cylinder 13 drives the lower assembly frame 11 and its lower movable seat 8 to move upward to the assembly position. The lower movable seat 8 is abutted against the positioning base plate 7, and the auxiliary positioning groove 9a of the auxiliary positioning block 9 is abutted against the plastic component 6. Then, the core rod moving cylinder 14 is used to drive the core rod 16 to rise, and the thin-shell plastic part 4 is pressed against the contour positioning groove 3a, and the shape of the thin-shell plastic part 4 is corrected to prevent the thin-shell plastic part 4 from being poorly assembled due to deformation.

[0041] Finally, the upper die cylinder 1 drives the upper die base 3 downward to apply pressure, pressing the thin shell plastic part 4 into the plastic component 6.

[0042] During the relative movement of the upper die portion and the lower movable portion, the lower assembly frame 11 presses the buffer spring 10 downward, and the buffer spring 10 is used to control the stability of the press-fitting process.

[0043] The above are preferred embodiments of the present invention. Those skilled in the art may make various changes or improvements based on the above. Without departing from the overall concept of the present invention, these changes or improvements should fall within the scope of protection required by the present invention.

Claims

1. An automated tooling for assembling thin-shell plastic parts, used for assembling thin-shell plastic parts (4) on the upper side of a plastic component (6), comprising an upper mold part and a lower movable part that can automatically close the mold up and down, and a positioning base plate (7) in an assembly position and relatively fixed during assembly, wherein: The positioning base plate (7) is used to position a plurality of horizontally spaced plastic components (6), and the upper mold portion includes a liftable upper mold base (3); The invention is characterized in that a plurality of contour positioning grooves (3a) are arranged at intervals in the horizontal direction on the lower side of the upper die base (3), and the thin shell plastic part (4) is consistent with the contour positioning grooves (3a); The upper die base (3) is further provided with a plurality of vacuum adsorption components arranged in a horizontal direction and corresponding one to one with the contour positioning grooves (3a), and the vacuum adsorption components are used to adsorb the thin shell plastic part (4) to fit the inner wall of the contour positioning groove (3a); The upper die base (3) is fixedly connected to the limiting frame (5), and the lower movable part includes a lower assembly frame (11) that can be raised and lowered. A lower movable seat (8) is fixed on the upper side of the lower assembly frame (11), and at least two buffer springs (10) are provided on the upper surface of the lower movable seat (8). When assembled, the lower assembly frame (11) presses the buffer springs (10) downward. The tooling also includes a plurality of core rod assemblies mounted on the lower assembly frame (11) and corresponding to the contour positioning grooves (3a) one by one, the core rod assemblies including: a core rod fixed slider (15), the core rod fixed slider (15) being connected to the lower assembly frame (11) in a lifting and movable manner; and at least one core rod (16), the core rod (16) being fixedly connected to the upper side of the core rod fixed slider (15), the core rod (16) being used to push the thin shell plastic part (4) upward against the inner wall of the contour positioning groove (3a).

2. The automated tooling for assembling thin-shell plastic parts according to claim 1, characterized in that: The vacuum adsorption component comprises an insert (3b) and a vacuum suction cup (3c) connected to a vacuum extraction device; the insert (3b) is embedded in the upper die base (3); the vacuum suction cup (3c) is inserted with the insert (3b) so that its adsorption end is located on the inner wall of the contoured positioning groove (3a).

3. The automated tooling for assembling thin-shell plastic parts according to claim 1, characterized in that: The upper die part further comprises an upper die cylinder (1) and an upper lifting frame (2); the upper lifting frame (2) is connected to a frame (21) in a lifting and movable manner; the cylinder barrel of the upper die cylinder (1) is fixedly connected to the frame (21); the piston rod of the upper die cylinder (1) is downwardly connected to the upper lifting frame (2); and the upper die base (3) is fixedly connected to the upper lifting frame (2).

4. The automated tooling for assembling thin-shell plastic parts according to claim 1, characterized in that: A plurality of auxiliary positioning blocks (9) corresponding to the plastic components (6) are fixed on the upper surface of the lower movable seat (8). Auxiliary positioning grooves (9a) are provided at the upper ends of the auxiliary positioning blocks (9). During assembly, the plastic components (6) are inserted downward into the auxiliary positioning grooves (9a).

5. The automated tooling for assembling thin-shell plastic parts according to claim 1, characterized in that: The mandrel assembly comprises: A core rod moving cylinder (14) has a cylinder barrel fixedly connected to a lower assembly frame (11), and a piston rod of the core rod moving cylinder (14) is upwardly connected to the lower side of a core rod fixed slider (15) to push the core rod (16) upward to press the thin shell plastic part (4) against the inner wall of the contoured positioning groove (3a).

6. The automated tooling for assembling thin-shell plastic parts according to claim 5, characterized in that: The lower movable seat (8) is connected to a slider limiting plate (17) for limiting the rising height of the core rod fixed slider (15).

7. The automated tooling for assembling thin-shell plastic parts according to claim 1, characterized in that: The side mold part also includes a side mold cylinder (18), a side mold base (19) and two guide rods (20). The cylinder barrel of the side mold cylinder (18) is fixed on the frame (21). The piston rod of the side mold cylinder (18) is fixedly connected to the side mold base (19). The two guide rods (20) are fixedly connected to the back of the side mold base (19) and movably pass through the frame (21) to guide the movement direction of the side mold base (19). The front of the side mold base (19) is provided with a plurality of engagement grooves that engage with the plastic components (6) one by one during assembly.

8. The automated tooling for assembling thin-shell plastic parts according to claim 1, characterized in that: The lower movable part further comprises a lower driving cylinder (13) and a lower connecting support plate (12) fixedly connected to the lower combined frame (11); the lower combined frame (11) is connected to the frame (21) in a lifting and movable manner; the cylinder barrel of the lower driving cylinder (13) is fixedly connected to the frame (21); and the piston rod of the lower driving cylinder (13) is upwardly connected to the lower connecting support plate (12).

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