Injection mold built-in inclined top linkage slider core pulling mechanism

Abstract

The injection mold has a built-in inclined top linkage slider core pulling mechanism, including a fixed mold plate and a movable mold plate of the mold, a rear insert block is arranged on the movable mold plate, a formed glove box is arranged between the movable mold plate, the fixed mold plate and the rear insert block, a claw is arranged on the rear side of the glove box, a slot is formed on the claw, the rear insert block is provided with an inclined top rod which is laterally obliquely inserted in the rear insert block and a transverse sliding seat arranged in the rear wall of the rear insert block, the head end of the inclined top rod extends out of the rear insert block and is provided with a claw insert block, a slot core is arranged on the claw insert block, the claw insert block cooperates with the claw, the slot core cooperates with the slot, the two sides of the transverse sliding seat are laterally positioned by two positioning blocks, a transverse sliding groove is arranged in the transverse sliding seat, an I-shaped block is arranged at the tail end of the inclined top rod, the I-shaped block cooperates with the transverse sliding groove, a limit block and an inclined guide column are connected under the fixed mold plate, an inclined guide hole is formed in the rear insert block, the limit block contacts with the outer end wall of the transverse sliding seat, and the inclined guide column extends into the inclined guide hole.

Description

Technical Field

[0001] The invention relates to a core-pulling mechanism with a built-in inclined top linkage slider in an injection mold, belonging to the field of injection molds. Background Art

[0002] Injection molds are used to produce plastic products, especially various automotive interior parts, such as automotive glove boxes. As various car models change, the shaft assembly structure of the glove box also changes. In addition to the rotation pins at both ends of the glove box, two groups of claws are set on the back side of the glove box, each group has two claws, and each claw is equipped with a shaft. After the product is injection molded, each claw needs to be demolded. However, in actual products, due to the limitation of the assembly position, the grooves of the two claws of the two groups are not concentric and there is an oblique angle. The claws on the inner side cannot be demolded by core pulling using the traditional core pulling structure. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide an injection mold with a built-in transverse inclined top structure and a sliding linkage inclined slide to enable the inner claws to smoothly pull the core and demold the mold.

[0004] The technical solution of the core-pulling mechanism of the built-in inclined top linkage slider of the injection mold of the present invention is: it includes a fixed mold plate and a movable mold plate of the mold, a fixed mold plate is installed under the fixed mold plate, a flow channel plate is installed on the movable mold plate, a flow channel frame is arranged in the flow channel plate, a nozzle is connected to the flow channel frame, a bottom plate is installed on the flow channel plate, a mold foot is installed on the bottom plate, a lower top plate and an upper top plate are arranged between the mold feet, an ejector is connected to the upper top plate, a movable mold plate is arranged on the mold foot, a right insert, a left insert and a rear insert are arranged on the movable mold plate, the right insert, the left insert, the rear insert and the gap between the movable mold plate and the fixed mold plate constitute a mold cavity, the nozzle is connected to the mold cavity, an injection molding glove box is arranged in the mold cavity, the ejector passes through the movable mold plate and contacts the glove box, a clamping claw is arranged on the rear side of the glove box, and a clamping groove is formed on the clamping claw , it is characterized in that a transverse inclined top linkage slider assembly is arranged in the rear insert block, and the transverse inclined top linkage slider assembly includes an inclined top rod which is transversely and obliquely inserted in the rear insert block and a transverse sliding seat arranged in the rear wall of the rear insert block, the head end of the inclined top rod extends out of the rear insert block and is provided with a claw insert block, a slot core is arranged on the claw insert block, the claw insert block cooperates with the claw, the slot core cooperates with the slot, and the two sides of the transverse sliding seat are transversely positioned by two positioning blocks, a transverse slide groove is arranged in the transverse sliding seat, an I-block is arranged at the tail end of the inclined top rod, the I-block cooperates with the transverse slide groove, a limit block and an oblique guide column are connected under the fixed template, and an oblique guide hole is formed in the rear insert block. When the mold is closed, the limit block contacts the outer end wall of the transverse sliding seat, and the oblique guide column extends into the oblique guide hole.

[0005] The present invention discloses a core-pulling mechanism with a built-in inclined ejector linkage slider in an injection mold. When pulling the core, the dynamic template is first driven by the power of the injection molding machine to separate from the fixed template. During the mold opening process, the inclined guide column drives the rear insert to slide outward through the inclined guide hole. However, at the beginning of the mold opening, the limit block blocks the outer end wall of the horizontal slide seat, limiting the horizontal slide seat, and the rear insert cannot slide outward with the horizontal slide seat. The horizontal slide seat is forced to slide horizontally in the horizontal slide groove under the action of the limited position force, so that the claw insert and the slot core at the head end of the inclined ejector are horizontally pulled out from the claw and the slot. At this time, the horizontal slide seat leaves the limit block, and the rear insert continues to slide outward with the horizontal slide seat, the inclined ejector rod, the claw insert and the slot core driven by the inclined guide column, leaving the product (glove box) area, so as to facilitate the ejection of the product. This scheme adopts a horizontal inclined ejector linkage core-pulling structure, utilizes the power of mold opening and closing, and does not need to provide additional power, so as to smoothly realize the horizontal core pulling of the claw and the slot, with a compact structure, reliable operation, and low cost.

[0006] The injection mold of the present invention has a built-in inclined top linkage slider core pulling mechanism, the upper part of the outer end wall of the horizontal slide seat is formed with an inclined surface, and the lower part of the inner end wall of the limit block is formed with an inclined wall. When resetting, the inclined surface and the inclined wall correspond to each other, which effectively avoids collision accidents and facilitates resetting. The locking module is connected under the fixed template. When closing the mold, the locking module passes through the rear insert and is inserted into the moving template. The mold locking is reliable and effectively prevents mold expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the structure of the injection mold of the present invention;

[0008] Figure 2 It is a schematic diagram of the right insert, the left insert and the rear insert of the present invention being arranged on a moving template;

[0009] Figure 3 It is a schematic diagram of the positional relationship between the rear insert and the glove box of the present invention;

[0010] Figure 4 It is a schematic diagram of the cooperation state between the transverse inclined top linkage slider assembly and the glove box claw of the present invention;

[0011] Figure 5 It is a schematic diagram of the horizontal inclined top linkage slider assembly and the glove box claws being pulled out of the present invention. DETAILED DESCRIPTION

[0012] The present invention relates to an injection mold with a built-in inclined top linkage slider core pulling mechanism. Figure 1 — Figure 5As shown, the mold comprises a fixed mold plate 1 and a movable mold plate 2, a fixed mold plate 3 is installed under the fixed mold plate, a flow channel plate 5 is installed on the movable mold plate, a flow channel frame 6 is arranged in the flow channel plate, a nozzle 7 is connected to the flow channel frame, a bottom plate 8 is installed on the flow channel plate, a mold foot 9 is installed on the bottom plate, a lower top plate 10 and an upper top plate 11 are arranged between the mold feet, an ejector pin 14 is connected to the upper top plate 11, a movable mold plate 12 is arranged on the mold foot, a right insert 13, a left insert 15 and a rear insert 16 are arranged on the movable mold plate, the right insert 13, the left insert 15, the rear insert 16 and the gap between the movable mold plate 12 and the fixed mold plate 3 constitute a mold cavity, the nozzle 7 is connected to the mold cavity, an injection molded glove box 17 is arranged in the mold cavity, the ejector pin 14 passes through the movable mold plate and contacts with the glove box 17, a claw 18 is arranged on the rear side of the glove box, a groove 19 is formed on the claw, and a transverse inclined ejector is arranged in the rear insert 16 The linkage slider assembly comprises a lateral inclined ejector rod 20 which is inserted obliquely in the rear insert block 16 and a transverse sliding seat 25 which is arranged in the rear wall of the rear insert block 16. The head end of the lateral inclined ejector rod extends out of the rear insert block 16 and is provided with a claw insert block 21. A slot core 22 is provided on the claw insert block. The claw insert block 21 cooperates with the claw 18. The slot core 22 cooperates with the slot 19. The two sides of the transverse sliding seat 25 are laterally positioned by two positioning blocks 26. A transverse slide groove 27 is provided in the transverse sliding seat 25. An I-block 28 is provided at the tail end of the lateral inclined ejector rod 20. The I-block 28 cooperates with the transverse slide groove 27. The fixed template 3 is connected with a limit block 30 and an oblique guide column 31. An oblique guide hole 32 is formed in the rear insert block 16. When the mold is closed, the limit block 30 contacts the outer end wall of the transverse sliding seat 25, and the oblique guide column 31 extends into the oblique guide hole 32. When pulling the core, the dynamic template 12 is first driven by the power of the injection molding machine to separate from the fixed template 3. During the mold opening process, the inclined guide column 31 drives the rear insert 16 to slide outward through the inclined guide hole 32. However, at the beginning of the mold opening, the limit block 30 blocks the outer end wall of the horizontal slide seat 25, limiting the horizontal slide seat 25, and the rear insert 16 cannot slide outward with the horizontal slide seat 25. The horizontal slide seat 25 is forced to slide horizontally in the horizontal slide groove 27 under the action of the limited position force, so that the claw insert 21 and the groove core 22 at the head end of the inclined ejector rod 20 are laterally pulled out from the claw 18 and the groove 19. At this time, the horizontal slide seat 25 leaves the limit block 30, and the rear insert 16 continues to slide outward with the horizontal slide seat 25, the inclined ejector rod 20, the claw insert 21 and the groove core 22 driven by the inclined guide column, leaving the product (glove box) area, facilitating the ejection of the product. This solution adopts a transverse inclined top linkage core pulling structure, which utilizes the power of mold opening and closing, and does not require additional power, to smoothly realize the transverse core pulling of the claws and the slots. It has a compact structure, reliable operation, and low cost. The upper part of the outer end wall of the horizontal slide seat 25 is formed with an inclined surface 35, and the lower part of the inner end wall of the limit block 30 is formed with an inclined wall 36. When resetting, the inclined surface 35 and the inclined wall 36 correspond to each other, which effectively avoids collision accidents and facilitates resetting. The fixed mold plate 3 is connected to the lock module 37. When closing the mold, the lock module 37 passes through the rear insert 16 and is inserted into the movable mold plate 12. The mold locking is reliable and effectively prevents mold expansion.

Claims

1. An injection mold is provided with a core pulling mechanism with an inclined top linkage slider, comprising a fixed mold plate (1) and a movable mold plate (2), a fixed mold plate (3) being installed under the fixed mold plate, a flow channel plate (5) being installed on the movable mold plate, a flow channel frame (6) being arranged in the flow channel plate, a nozzle (7) being connected to the flow channel frame, a bottom plate (8) being installed on the flow channel plate, a mold foot (9) being installed on the bottom plate, a lower top plate (10) and an upper top plate (11) being arranged between the mold feet, a movable mold plate (12) being arranged on the mold foot, a right insert (13), a left insert (15) and a rear insert (16) being arranged on the movable mold plate, a mold cavity being formed by the gap between the right insert (13), the left insert (15), the rear insert (16) and the movable mold plate (12) and the fixed mold plate (3), the nozzle (7) being connected to the mold cavity, a glove box (17) for injection molding being arranged in the mold cavity, a clamping claw (18) being arranged on the rear side of the glove box, a clamping groove (19) being formed on the clamping claw, and the mold cavity is characterized in that A transverse inclined top linkage slider assembly is arranged in the rear insert (16), and the transverse inclined top linkage slider assembly comprises an inclined top rod (20) obliquely inserted in the rear insert (16) and a transverse sliding seat (25) arranged in the rear wall of the rear insert (16). The head end of the inclined top rod extends out of the rear insert (16) and is provided with a claw insert (21). A slot core (22) is arranged on the claw insert. The claw insert (21) cooperates with the claw (18), and the slot core (22) cooperates with the slot (19). Two sides of the transverse sliding seat (25) are transversely positioned by two positioning blocks (26). A transverse sliding groove (27) is arranged in the transverse sliding seat (25). The tail end of the inclined top rod (20) is provided with a clamping claw insert (21). An I-shaped block (28) is arranged at the end, and the I-shaped block (28) cooperates with the horizontal slide groove (27). The fixed template (3) is connected to a limit block (30) and an inclined guide column (31) at the bottom. An inclined guide hole (32) is formed in the rear insert block (16). When the mold is closed, the limit block (30) contacts the outer end wall of the horizontal slide seat (25), and the inclined guide column (31) extends into the inclined guide hole (32). The upper part of the outer end wall of the horizontal slide seat (25) is formed with an inclined surface (35), and the lower part of the inner end wall of the limit block (30) is formed with an inclined wall (36). The fixed template (3) is connected to a locking module (37) at the bottom. When the mold is closed, the locking module (37) passes through the rear insert block (16) and is inserted into the movable template (12).

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