Slider linkage internal drawing mechanism for the main body injection mold of the automotive instrument panel trim

Abstract

The present invention discloses an internal sliding mechanism with linkage for the slider of an injection mold for the automotive instrument panel decorative part body, which relates to the technical field of injection molding processing. It includes a bottom plate, on the top of which a support column is fixedly installed. On the top of the support column, a top plate is fixedly installed. On the top of the top plate, a hydraulic cylinder is fixedly installed. A demolding device is arranged on the top of the bottom plate. A positioning frame is fixedly installed on the top of the bottom plate, and a lower mold is fixedly installed on the top of the positioning frame. An upper mold is slidably installed on the circumferential surface of the support column, and the upper mold is fixedly connected to the output end of the hydraulic cylinder. Two fixed rods are fixedly installed on the top of the bottom plate, and a sliding frame is slidably installed between the fixed rods, so that when the rotating block moves upward, it is blocked by the L-shaped rod and cannot rotate downward, preventing some processed parts from adhering to the mold and being damaged during demolding, affecting the later processing, and improving the integrity of demolding.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding processing, and specifically to an internal core-pulling mechanism with interlocking sliders for an injection mold of an automotive instrument panel decorative part body. Background Art

[0002] The internal core-pulling mechanism with interlocking sliders in an injection mold for an automotive instrument panel decorative part body is usually used to solve the situation where an internal core-pulling action is required due to the complex shape of the part during the injection molding process.

[0003] The patent with the patent publication number CN210257085U relates to an internal core-pulling mechanism with interlocking sliders for an injection mold, including a base, a fixed mold plate and a movable mold plate. The fixed mold plate is fixed to the upper end of the base. A fixed frame is fixedly connected to the upper end of the movable mold plate, and a first driving oil cylinder is fixedly installed at the center of the fixed frame. The output end of the first driving oil cylinder is fixedly connected to the upper end wall of the movable mold plate. An injection molded part is provided between the fixed mold plate and the movable mold plate. A second driving oil cylinder is provided at the bottom of the injection molded part. A side core-pulling slider is slidably connected to the inner wall of the fixed mold plate on one side of the outer wall of the injection molded part. A second linear rack is horizontally fixedly connected to one side of the outer wall of the side core-pulling slider, and a first gear is meshed with the upper end of the second linear rack. The structure of this patent is simple and easy to operate. Through the interlocking effect of the movable mold plate, the internal pressure and extraction of the side core-pulling slider are realized, thereby improving production efficiency. It is convenient and ingenious to use and is suitable for wide promotion.

[0004] In the above patent, through the interlocking effect of the movable mold plate, the internal pressure and extraction of the side core-pulling slider are realized, thereby improving production efficiency. It is convenient and ingenious to use and is suitable for wide promotion. However, when the injection molding is completed, it is relatively difficult to separate from the mold in some areas with special shapes during demolding, which easily causes damage to the product during demolding and affects the appearance of the product. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an internal core-pulling mechanism with interlocking sliders for an injection mold of an automotive instrument panel decorative part body, and solves the problems raised in the above background art.

[0006] To achieve the above object, the present invention is realized by the following technical solutions: a slider linkage internal drawing mechanism for an injection mold of an automotive instrument panel decorative part body, including a bottom plate, a support column is fixedly installed on the top of the bottom plate, a top plate is fixedly installed on the top of the support column, a hydraulic cylinder is fixedly installed on the top of the top plate, a demolding device is arranged on the top of the bottom plate, a positioning frame is fixedly installed on the top of the bottom plate, a lower mold is fixedly installed on the top of the positioning frame, an upper mold is slidably installed on the circumferential surface of the support column, the upper mold is fixedly connected to the output end of the hydraulic cylinder, two fixing rods are fixedly installed on the top of the bottom plate, a sliding frame is slidably installed between the fixing rods, a transmission rod is fixedly penetrated through the surface of the lower mold, a chute is opened on the surface of the transmission rod, a rotating block is rotatably installed at the bottom of the transmission rod, a supporting round rod is fixedly installed on the top of the bottom plate, a sliding round rod is slidably installed on the circumferential surface of the supporting round rod, a collar is slidably installed on the circumferential surface of the supporting round rod, a transmission connecting rod is fixedly installed between the collar and the sliding frame, an arc-shaped block is fixedly installed at the bottom of the lower mold, the L-shaped rod moves into contact with the rotating block, so that when the rotating block moves upward, it is blocked by the L-shaped rod and cannot rotate downward. A deceleration device and a protection device are also arranged on the top of the bottom plate.

[0007] According to the above technical solution, a return spring is arranged between the transmission rod and the L-shaped rod, the arc-shaped block contacts the L-shaped rod, and the L-shaped rod is driven to reset by the return spring.

[0008] According to the above technical solution, a torsion spring is arranged between the rotating block and the transmission rod, the rotating block contacts the sliding frame, and the rotating block is driven to reset by the torsion spring.

[0009] According to the above technical solution, a first spring is arranged between the fixing rod and the sliding frame, the L-shaped rod contacts the rotating block, and the sliding frame is driven to reset by the first spring.

[0010] According to the above technical solution, the deceleration device includes: a hollow box, a lifting plate, a friction block, a first baffle and a second baffle. The hollow box is fixedly installed at the bottom of the top plate, a square hole is opened on the surface of the hollow box, the lifting plate is slidably installed on the inner wall of the hollow box, the friction block is slidably installed on the inner wall of the hollow box, a first baffle is fixedly installed at the bottom of the friction block, a second baffle is fixedly installed at the top of the lifting plate, and the second baffle limits the first baffle.

[0011] According to the above technical solution, a second spring is arranged between the lifting plate and the hollow box, and a third spring is arranged between the friction block and the hollow box. The lifting plate is driven to reset by the second spring, and the friction block is driven to reset by the third spring.

[0012] According to the above technical solution, the protection device includes: a square block, a square plate, a triangular block, an inclined plane block, a fixed inclined rod, and a sliding vertical rod. The square block is fixedly installed on the top of the friction block, the square plate is fixedly installed on the top of the square block, the triangular block is fixedly installed at one end of the square plate, the inclined plane block is fixedly installed at the other end of the square plate, the fixed inclined rod is fixedly installed between the triangular block and the inclined plane block, and the sliding vertical rod is fixedly installed on the top of the lifting plate. The lifting plate is driven to move upward by the reset of the second spring, and the movement of the lifting plate drives the second baffle to move upward and re-limit the first baffle.

[0013] According to the above technical solution, the sliding vertical rod contacts the inclined plane block, and the top of the sliding vertical rod is set as an arc surface.

[0014] The present invention provides a slider linkage inner drawing mechanism for an injection mold of an automobile instrument panel decorative part body. It has the following beneficial effects:

[0015] (1) In this invention, when the sliding round rod moves, it will contact the workpiece and push the workpiece to move upward, so that after injection molding, the device will demold the area where the shape is more difficult to demold, preventing some workpieces from adhering to the mold and being damaged during demolding, affecting subsequent processing, and improving the integrity of demolding. When the L-shaped rod moves and contacts the rotating block, the rotating block cannot rotate downward when moving upward due to the block of the L-shaped rod, improving the stability of the device when moving upward.

[0016] (2) In this invention, after the friction force between the upper mold friction blocks increases, the resistance when the upper mold moves upward increases, so that the moving speed of the upper mold when moving upward decreases. When the demolding device demolds the workpiece, the moving speed of the upper mold when moving upward decreases, preventing the upper mold from tearing the workpiece when the workpiece is not fully demolded, improving the stability and coherence of processing. Through the limiting of the first baffle by the second baffle, the mold will not be limited when moving downward, not hindering the injection molding efficiency and improving the working efficiency.

[0017] (3) In this invention, when the square block moves, it will drive the friction block to move into the hollow box. After the friction block moves, when the upper mold injects again, it will not contact the friction block to produce a deceleration effect, improving the practicability of the device. The lifting plate is driven to move upward by the reset of the second spring, and the movement of the lifting plate drives the second baffle to move upward and re-limit the first baffle, so that the device resets to the initial state, not hindering repeated use, and improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2Schematic diagram of the top structure of the bottom plate of the present invention;

[0020] Figure 3 Schematic diagram of the internal structure of the positioning frame of the present invention;

[0021] Figure 4 Schematic diagram of the structure of the demoulding device of the present invention;

[0022] Figure 5 Schematic diagram of the cross-sectional structure of the transmission rod of the present invention;

[0023] Figure 6 Schematic diagram of the cross-sectional structure of the hollow box of the present invention;

[0024] Figure 7 Schematic diagram of the structure of the protection device of the present invention.

[0025] In the figure: 1. Bottom plate; 2. Support column; 3. Top plate; 4. Hydraulic cylinder; 51. Positioning frame; 52. Lower mold; 53. Upper mold; 54. Fixed rod; 55. Sliding frame; 56. Transmission rod; 57. Rotating block; 58. L-shaped rod; 59. Transmission connecting rod; 510. Support round rod; 511. Sliding round rod; 512. Collar; 513. Arc-shaped block; 61. Hollow box; 62. Lifting plate; 63. Friction block; 64. Second spring; 65. Baffle one; 66. Baffle two; 67. Third spring; 68. Square block; 69. Square plate; 610. Triangular block; 611. Inclined plane block; 612. Fixed inclined rod; 613. Sliding vertical rod. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figure 1 - Figure 5, an embodiment of the present invention is: a slider linkage inner drawing mechanism for an injection mold of an automotive instrument panel trim part body, including a bottom plate 1. A support column 2 is fixedly installed on the top of the bottom plate 1. A top plate 3 is fixedly installed on the top of the support column 2. A hydraulic cylinder 4 is fixedly installed on the top of the top plate 3. A demolding device is arranged on the top of the bottom plate 1. A positioning frame 51 is fixedly installed on the top of the bottom plate 1. A lower mold 52 is fixedly installed on the top of the positioning frame 51. The circumferential surface of the support column 2 is slidably installed with an upper mold 53. The upper mold 53 is fixedly connected to the output end of the hydraulic cylinder 4. Two fixing rods 54 are fixedly installed on the top of the bottom plate 1. A sliding frame 55 is slidably installed between the fixing rods 54. The surface of the lower mold 52 is fixedly penetrated with a transmission rod 56. A chute is provided on the surface of the transmission rod 56. A rotating block 57 is rotatably installed at the bottom of the transmission rod 56. A support round rod 510 is fixedly installed on the top of the bottom plate 1. A sliding round rod 511 is slidably installed on the circumferential surface of the support round rod 510. A collar 512 is slidably installed on the circumferential surface of the support round rod 510. A transmission connecting rod 59 is fixedly installed between the collar 512 and the sliding frame 55, so that after injection molding, the device will demold the area where the shape is more difficult to demold, prevent some workpieces from adhering to the mold and being damaged during demolding, affect the later processing, improve the integrity of demolding. An arc-shaped block 513 is fixedly installed at the bottom of the lower mold 52 to improve the stability of the device when moving upward.

[0028] A return spring is arranged between the transmission rod 56 and the L-shaped rod 58. The arc-shaped block 513 contacts the L-shaped rod 58, and the L-shaped rod 58 is driven to reset by the return spring.

[0029] A torsion spring is arranged between the rotating block 57 and the transmission rod 56. The rotating block 57 contacts the sliding frame 55, and the rotating block 57 is driven to reset by the torsion spring.

[0030] A first spring is arranged between the fixing rod 54 and the sliding frame 55. The L-shaped rod 58 contacts the rotating block 57, and the sliding frame 55 is driven to reset by the first spring.

[0031] During the operation of this embodiment: When the hydraulic cylinder 4 is started, the output end of the hydraulic cylinder 4 moves downward, which will drive the upper mold 53 to move downward. After the upper mold 53 moves downward, it closes with the lower mold 52 and starts injection molding. When the upper mold 53 moves downward, it will drive the transmission rod 56 to move downward. The movement of the transmission rod 56 will drive the rotating block 57 to move downward. The movement of the rotating block 57 will contact the sliding frame 55. The rotating block 57 is blocked by the sliding frame 55, causing the rotating block 57 to rotate upward. After the rotating block 57 rotates, it moves downward along with the transmission rod 56. After the rotating block 57 no longer contacts the sliding frame 55, the torsion spring resets to drive the rotating block 57 to rotate downward. After the injection molding is completed, the upper mold 53 moves upward. The movement of the upper mold 53 drives the transmission rod 56 to move upward. The movement of the transmission rod 56 drives the rotating block 57 to move upward. The movement of the rotating block 57 will contact the sliding frame 55 and drive the sliding frame 55 to move upward. The movement of the sliding frame 55 drives the transmission connecting rod 59 to move upward. The movement of the transmission connecting rod 59 drives the collar 512 to move upward. The movement of the collar 512 will contact the sliding round rod 511. The movement of the collar 512 drives the sliding round rod 511 to move upward. The movement of the sliding round rod 511 will contact the workpiece and push the workpiece upward, so that after the injection molding is completed, the device will demold the area where the shape is more difficult to demold, preventing some workpieces from adhering to the mold and being damaged during demolding, affecting the later processing, improving the integrity of demolding. The upward movement of the transmission rod 56 drives the L-shaped rod 58 to move upward. The movement of the L-shaped rod 58 will contact the arc-shaped block 513. The L-shaped rod 58 is blocked by the arc-shaped block 513, causing the L-shaped rod 58 to move into the interior of the transmission rod 56. The movement of the L-shaped rod 58 will contact the rotating block 57, so that the rotating block 57 cannot rotate downward when moving upward due to the block of the L-shaped rod 58, improving the stability of the device when moving upward.

[0032] Please refer to Figure 1 - Figure 7, on the basis of the above embodiments, in another embodiment of the present invention, a deceleration device and a protection device are further provided on the top of the bottom plate 1. Among them, the deceleration device includes: a hollow box 61, a lifting plate 62, a friction block 63, a first baffle 65 and a second baffle 66. The hollow box 61 is fixedly installed at the bottom of the top plate 3. A square hole is provided on the surface of the hollow box 61. The lifting plate 62 is slidably installed on the inner wall of the hollow box 61. The friction block 63 is slidably installed on the inner wall of the hollow box 61. A first baffle 65 is fixedly installed at the bottom of the friction block 63. A second baffle 66 is fixedly installed at the top of the lifting plate 62, so as to reduce the speed when the upper mold 53 moves upward. When the demolding device demolds the workpiece, the speed of the upper mold 53 moving upward is reduced, preventing the upper mold 53 from tearing the workpiece when the workpiece is not completely demolded, improving the stability and coherence of processing, and ensuring that the upper mold 53 will not be restricted when moving downward, without affecting the injection efficiency and improving the work efficiency.

[0033] A second spring 64 is provided between the lifting plate 62 and the hollow box 61, and a third spring 67 is provided between the friction block 63 and the hollow box 61. The second spring 64 drives the lifting plate 62 to reset, and the third spring 67 drives the friction block 63 to reset.

[0034] The protection device includes: a square block 68, a square plate 69, a triangular block 610, an inclined plane block 611, a fixed inclined rod 612 and a sliding vertical rod 613. The square block 68 is fixedly installed on the top of the friction block 63. The square plate 69 is fixedly installed on the top of the square block 68. The triangular block 610 is fixedly installed at one end of the square plate 69, so as to prevent the upper mold 53 from contacting the friction block 63 and generating a deceleration effect when the upper mold 53 is injected again, improving the practicability of the device. The inclined plane block 611 is fixedly installed at the other end of the square plate 69. The fixed inclined rod 612 is fixedly installed between the triangular block 610 and the inclined plane block 611. The sliding vertical rod 613 is fixedly installed on the top of the lifting plate 62, so that the device resets to the initial state, without hindering repeated use and improving the practicability of the device.

[0035] The sliding vertical rod 613 contacts the inclined plane block 611, and the top of the sliding vertical rod 613 is set as an arc surface.

[0036] During the operation of this embodiment: When the upper mold 53 moves to the bottommost position, it will contact the lifting plate 62. The movement of the upper mold 53 drives the lifting plate 62 to move downward. The downward movement of the lifting plate 62 drives the second baffle 66 to move downward. After the second baffle 66 moves, it no longer contacts the first baffle 65. After the first baffle 65 is no longer limited by the second baffle 66, the third spring 67 drives the friction block 63 to move away from the inside of the hollow box 61 when it resets. When the upper mold 53 moves upward, it will contact the friction block 63. The increased friction between the upper mold 53 and the friction block 63 increases the resistance when the upper mold 53 moves upward, reducing the speed of the upper mold 53 when it moves upward. When the demolding device demolds the workpiece, the speed of the upper mold 53 moving upward is reduced, preventing the upper mold 53 from tearing the workpiece and causing damage when the workpiece is not fully demolded, improving the stability and continuity of processing. Through the limitation of the first baffle 65 by the second baffle 66, the upper mold 53 will not be limited when moving downward, without hindering the injection molding efficiency and improving the work efficiency.

[0037] The movement of the friction block 63 drives the square block 68 to move away from the inside of the hollow box 61. The movement of the square block 68 drives the square plate 69 to move. The movement of the square plate 69 drives the triangular block 610 to move outside the hollow box 61. When the upper mold 53 moves to the top, it will contact the triangular block 610. The movement of the upper mold 53 drives the triangular block 610 to move into the hollow box 61. The movement of the triangular block 610 drives the square plate 69 to move into the hollow box 61. The movement of the square plate 69 drives the square block 68 to move into the hollow box 61. The movement of the square block 68 drives the friction block 63 to move into the hollow box 61. After the friction block 63 moves, when the upper mold 53 injects again, it will not contact the friction block 63 to produce a deceleration effect, improving the practicality of the device. The movement of the square plate 69 drives the inclined plane block 611 to move towards the sliding vertical rod 613. The movement of the inclined plane block 611 contacts and pushes the sliding vertical rod 613 to move downward. The movement of the sliding vertical rod 613 drives the lifting plate 62 to move downward. The movement of the lifting plate 62 drives the second baffle 66 to move downward. The movement of the friction block 63 into the hollow box 61 drives the first baffle 65 to move into the hollow box 61. Then, the second spring 64 drives the lifting plate 62 to move upward when it resets. The movement of the lifting plate 62 drives the second baffle 66 to move upward and re-limit the first baffle 65, resetting the device to its initial state, without hindering repeated use and improving the practicality of the device.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and deformations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The internal drawing mechanism with interlocking sliders of the injection mold for the main body of the automotive instrument panel trim, including a bottom plate (1), is characterized in that: A support column (2) is fixedly installed at the top of the bottom plate (1), a top plate (3) is fixedly installed at the top of the support column (2), a hydraulic cylinder (4) is fixedly installed at the top of the top plate (3), a demoulding device is arranged at the top of the bottom plate (1), a positioning frame (51) is fixedly installed at the top of the bottom plate (1), a lower mould (52) is fixedly installed at the top of the positioning frame (51), an upper mould (53) is slidably installed on the circumferential surface of the support column (2), the upper mould (53) is fixedly connected with the output end of the hydraulic cylinder (4), two fixed rods (54) are fixedly installed at the top of the bottom plate (1), a sliding frame (55) is slidably installed between the fixed rods (54), a transmission rod (56) is fixedly penetrated through the surface of the lower mould (52), a chute is formed on the surface of the transmission rod (56), a rotating block (57) is rotatably installed at the bottom of the transmission rod (56), a supporting round rod (510) is fixedly installed at the top of the bottom plate (1), a sliding round rod (511) is slidably installed on the circumferential surface of the supporting round rod (510), a collar (512) is slidably installed on the circumferential surface of the supporting round rod (510), a transmission connecting rod (59) is fixedly installed between the collar (512) and the sliding frame (55), a cambered surface block (513) is fixedly installed at the bottom of the lower mould (52), a speed reduction device and a protection device are further arranged at the top of the bottom plate (1), a return spring is arranged between the transmission rod (56) and an L-shaped rod (58), the cambered surface block (513) contacts with the L-shaped rod (58), a torsion spring is arranged between the rotating block (57) and the transmission rod (56), and the rotating block (57) contacts with the sliding frame (55); when the upper mould (53) moves, it drives the transmission rod (56) to move upwards, when the transmission rod (56) moves, it drives the rotating block (57) to move upwards, when the rotating block (57) moves, it will contact with the sliding frame (55) and drive the sliding frame (55) to move upwards, when the sliding frame (55) moves, it drives the transmission connecting rod (59) to move upwards, when the transmission connecting rod (59) moves, it drives the collar (512) to move upwards, when the collar (512) moves, it will contact with the sliding round rod (511), when the collar (512) moves, it drives the sliding round rod (511) to move upwards, and when the sliding round rod (511) moves, it contacts with the workpiece and pushes the workpiece to move upwards; when the transmission rod (56) moves upwards, it drives the L-shaped rod (58) to move upwards, the L-shaped rod (58) is blocked by the cambered surface block (513) so that the L-shaped rod (58) moves into the interior of the transmission rod (56), when the L-shaped rod (58) moves, it contacts with the rotating block (57), so that the rotating block (57) is blocked by the L-shaped rod (58) and cannot rotate downwards when moving upwards.

2. The internal core-pulling mechanism with slider linkage of the injection mold for the automotive instrument panel trim part body according to claim 1, characterized in that: A first spring is arranged between the fixed rod (54) and the sliding frame (55).

3. The inner core-pulling mechanism with slider linkage of the injection mold for the automotive instrument panel trim part body according to claim 1, characterized in that: The speed reduction device includes: a hollow box (61), a lifting plate (62), a friction block (63), a first baffle (65) and a second baffle (66). The hollow box (61) is fixedly installed at the bottom of the top plate (3). A square hole is formed in the surface of the hollow box (61). The lifting plate (62) is slidably installed on the inner wall of the hollow box (61). The friction block (63) is slidably installed on the inner wall of the hollow box (61). A first baffle (65) is fixedly installed at the bottom of the friction block (63). A second baffle (66) is fixedly installed at the top of the lifting plate (62).

4. The inner core-pulling mechanism with slider linkage of the injection mold for the automotive instrument panel trim body according to claim 3, characterized in that: A second spring (64) is arranged between the lifting plate (62) and the hollow box (61). A third spring (67) is arranged between the friction block (63) and the hollow box (61).

5. The internal drawing mechanism with interlocking sliders of the injection mold for the automotive instrument panel trim part body according to claim 1, characterized in that: The protection device includes: a square block (68), a square plate (69), a triangular block (610), an inclined plane block (611), a fixed inclined rod (612) and a sliding vertical rod (613). The square block (68) is fixedly installed at the top of the friction block (63). The square plate (69) is fixedly installed at the top of the square block (68). The triangular block (610) is fixedly installed at one end of the square plate (69). The inclined plane block (611) is fixedly installed at the other end of the square plate (69). The fixed inclined rod (612) is fixedly installed between the triangular block (610) and the inclined plane block (611). The sliding vertical rod (613) is fixedly installed at the top of the lifting plate (62).

6. The inner core-pulling mechanism with slider linkage of the injection mold for the automotive instrument panel trim part body according to claim 5, wherein: The sliding vertical rod (613) contacts the inclined plane block (611). The top of the sliding vertical rod (613) is set as an arc surface.

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