A plurality of core-pulling structure of a plastic mold

Abstract

The utility model discloses a kind of multiple core-pulling structures of row position of plastic mould, including two first row position seats of opposite arrangement, and the second row position seat of one side between two first row position seats;The lower part of one end of the second row position seat is also provided with accommodating groove, one core-pulling translation component is respectively installed in the side of each first row position seat, one linkage core-pulling component is respectively installed in the corresponding place of core-pulling translation component on the two sides of second row position seat;The core-pulling translation component includes the first fixed block mounted on the first row position seat, and the row position hook block connected to the one end of first fixed block.The utility model passes through the structure design of optimization mould, especially in the design multiple core-pulling structure in row position, so that mould is more stable in opening and closing process, and structure design is reasonable, structure is simple, mould cost is saved, and practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold technology, and in particular to a multi-core pulling structure for a plastic mold. Background Technology

[0002] In existing technologies, when product appearance requirements are extremely high and no visible seams are allowed, the design structure of the mold often becomes very complex. For example, to meet the requirement of no seams, designers need to design complex core-pulling structures within the mold's slides. However, this complex design not only increases the manufacturing cost of the mold but may also lead to mold instability, affecting its service life. Furthermore, the complex mold structure may also increase maintenance costs during production, further reducing production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-core pulling structure for plastic mold slides. By optimizing the mold structure design, especially by designing a multi-core pulling structure within the slides, the mold becomes more stable during opening and closing. The structure is reasonable, simple, saves mold costs, and is highly practical.

[0004] To achieve the above objectives, the following technical solution is adopted:

[0005] A multi-stage core-pulling structure for a plastic mold includes two opposing first slide seats and a second slide seat arranged on one side between the two first slide seats. A receiving groove is formed at the lower part of one end of the second slide seat. A core-pulling translation component is installed on one side of each first slide seat, and a linked core-pulling component is installed on each side of the second slide seat corresponding to the core-pulling translation component. The core-pulling translation component includes a first fixing block installed on the first slide seat and a slide hook block connected to one end of the first fixing block. The slide hook block has a downwardly curved hook portion at one end near the linked core-pulling component. A first mounting groove is formed on one side of the second slide seat, and a first insertion hole is formed inside the second slide seat, with one end of the first insertion hole extending into the first mounting groove. A second insertion hole is also formed inside the second slide seat. The inner diameter of the second socket is smaller than that of the first socket, and both ends of the second socket extend into the first socket and the receiving groove, respectively; the linkage core-pulling assembly includes a second fixing block and a core-pulling seat; the second fixing block is installed in the first mounting groove, and a first slot is provided at one end of the second fixing block near the sliding hook block, and a third socket extending into the first socket is also provided at the lower part of the inner wall of one side of the first slot; one end of the core-pulling seat is arranged in the first slot, and the other end of the core-pulling seat moves through the third socket and is then moved into the first socket; the other end of the core-pulling seat is also provided with a limiting boss, and the diameter of the limiting boss is larger than the inner diameter of the third socket; a core-pulling rod is also connected to one side of the limiting boss, and the core-pulling rod moves through the second socket; a slot adapted to the hook part is also provided at the top of one end of the core-pulling seat.

[0006] Furthermore, the linkage core-pulling assembly also includes a first spring sleeved on the core-pulling rod, and the two ends of the first spring abut against one side of the limiting boss and the inner wall of one end of the first insertion hole, respectively.

[0007] Furthermore, a second mounting groove is provided at one end of the first fixing block; a pin arranged laterally through the second mounting groove is also installed on the first fixing block; the other end of the positioning hook block is inserted into the second mounting groove and sleeved on the pin.

[0008] Furthermore, the top inner wall of the first slot is provided with a first inclined surface that slopes upward toward the first row seat, and the upper part of the first inclined surface extends to the opening of the first slot; the top outer wall of the hook part is provided with a second inclined surface that slopes downward.

[0009] Furthermore, each of the two first row seats has a concave first arc-shaped surface at one end facing each other, and the second row seat has a concave second arc-shaped surface at one end. The second arc-shaped surface and the two first arc-shaped surfaces together form a product forming surface with a semi-elliptical structure. The receiving groove is located at the lower part of the second arc-shaped surface.

[0010] Furthermore, a locking block is provided at the lower part of the second arc-shaped surface near the receiving groove.

[0011] Furthermore, it also includes three core-pulling cylinders; one core-pulling cylinder is connected to the second row seat, and the other two core-pulling cylinders are respectively connected to a first row seat.

[0012] By adopting the above solution, the beneficial effects of this utility model are:

[0013] This utility model optimizes the mold's structural design, especially by incorporating a multi-core-pulling structure within the slide, making the mold more stable during opening and closing. Furthermore, the design is reasonable and simple, saving mold costs and demonstrating strong practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of part of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of this utility model omitting the two first row seats;

[0017] Figure 4 This is an exploded view of the core-pulling translation component and the linkage core-pulling component of this utility model;

[0018] The following are explanations of the labels in the attached diagram:

[0019] 1. First row seat; 2. Second row seat; 11. First fixing block; 12. Row hook block; 13. Hook part; 14. Second mounting groove; 15. Pin; 16. Second inclined surface; 21. Receiving groove; 22. First spring; 23. First insertion hole; 24. Second fixing block; 25. Core pull seat; 26. First slot; 27. Limiting boss; 28. Core pull rod; 29. ​​Card slot; 201. Card block; 261. First inclined surface. Detailed Implementation

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Reference Figures 1 to 4As shown, this utility model provides a multi-stage core-pulling structure for a plastic mold, including two opposing first slide seats 1 and a second slide seat 2 arranged on one side between the two first slide seats 1; a receiving groove 21 is also provided at the lower part of one end of the second slide seat 2. In one embodiment, a core-pulling translation component is installed on one side of each first slide seat 1, and a linkage core-pulling component is installed on each side of the second slide seat 2 at the corresponding position of the core-pulling translation component; the core-pulling translation component includes a first fixing block 11 installed on the first slide seat 1 and a slide hook block 12 connected to one end of the first fixing block 11; the slide hook block 12 has a downwardly bent hook portion 13 at one end near the linkage core-pulling component; a first mounting groove is provided on one side of the second slide seat 2, and a first insertion hole 23 is also provided in the second slide seat 2, with one end of the first insertion hole 23 penetrating into the first mounting groove; a second insertion hole is also provided in the second slide seat 2. The inner diameter of the second insertion hole is smaller than the inner diameter of the first insertion hole 23, and both ends of the second insertion hole extend into the first insertion hole 23 and the receiving groove 21, respectively; the linkage core-pulling assembly includes a second fixing block 24 and a core-pulling base 25; the second fixing block 24 is installed in the first mounting groove, and a first slot 26 is opened at one end of the second fixing block 24 near the sliding hook block 12, and a third insertion hole extending into the first insertion hole 23 is also opened at the lower part of the inner wall of one side of the first slot 26; the core-pulling base 25 has one One end is arranged in the first slot 26, and the other end of the core pull seat 25 moves through the third insertion hole and is then moved into the first insertion hole 23; the other end of the core pull seat 25 is also provided with a limiting boss 27, and the diameter of the limiting boss 27 is larger than the inner diameter of the third insertion hole; a core pull rod 28 is also connected to one side of the limiting boss 27, and the core pull rod 28 moves through the second insertion hole; a slot 29 adapted to the hook part 13 is also opened at the top of one end of the core pull seat 25.

[0022] This utility model targets a hollow, semi-elliptical plastic part. The outer wall of the plastic part has a fastener (formed by a receiving groove 21), and each end of the fastener has a recessed hole (formed by a core-pulling rod 28). In this embodiment, each of the two first row seats 1 has a concave first arc-shaped surface at one end, and one end of the second row seat 2 has a concave second arc-shaped surface. The second arc-shaped surface and the two first arc-shaped surfaces form a semi-elliptical product forming surface. The receiving groove 21 is located at the lower part of the second arc-shaped surface. The shape of the plastic part is formed based on the product forming surface. At the same time, a locking block 201 is provided at the lower part of the second arc-shaped surface near the receiving groove 21. The outer wall of the plastic part has holes (formed by the locking block 201). In addition, it also includes three core-pulling cylinders. One core-pulling cylinder is connected to the second row seat 2, and the other two core-pulling cylinders are respectively connected to a first row seat 1. The core-pulling cylinders are used to drive the row seats to move.

[0023] During mold closing, the core-pulling cylinder first drives the second sliding seat 2 to move to the mold closing position. Then, the two first sliding seats 1 move towards the second sliding seat 2 under the drive of the core-pulling cylinder. At this time, the sliding hook block 12 gradually inserts into the first slot 26 of the second fixing block 24, so that the hook part 13 is engaged in the slot 29, completing the mold closing of the sliding hook block 12 and the core-pulling seat 25. Then, the sliding hook block 12 drives the core-pulling seat 25 to continue moving, thereby driving the core-pulling rod 28 to move to the predetermined mold closing position, and the mold closing is completed. During mold opening, the first sliding seat 1 retracts, and the sliding hook block 12 pulls the core-pulling seat 25 outward. This causes the core-pulling rod 28 to disengage from the mold closing position. After the sliding hook block 12 pulls the core-pulling seat 25 outward by a certain stroke, the limiting boss 27 reaches the opening of the third insertion hole. Since the diameter of the limiting boss 27 is larger than the inner diameter of the third insertion hole, the outer wall of the third insertion hole will generate resistance to the limiting boss 27. At this time, the sliding hook block 12 continues to move outward. Under the influence of the resistance, the hook part 13 disengages from the slot 29, completing the demolding of the sliding hook block 12 and the core-pulling seat 25. After the sliding hook block 12 is pulled out from the first slot 26, the second sliding seat 2 is driven by the oil cylinder to retreat until it is fully opened, completing the mold opening action.

[0024] Preferably, in this embodiment, the linkage core-pulling assembly further includes a first spring 22 sleeved on the core-pulling rod 28, and the two ends of the first spring 22 abut against one side of the limiting boss 27 and the inner wall of one end of the first insertion hole 23, respectively. The first spring 22 can assist the core-pulling seat 25 in resetting. At the same time, one end of the first fixing block 11 is provided with a second mounting groove 14; a pin 15 arranged laterally through the second mounting groove 14 is also installed on the first fixing block 11; the other end of the sliding hook block 12 is inserted into the second mounting groove 14 and sleeved on the pin 15; the top inner wall of the first slot 26 is also provided with a first inclined surface 261 that is inclined upward toward the first sliding seat 1, and the upper part of the first inclined surface 261 extends to the opening of the first slot 26; the top outer wall of the hook part 13 is also provided with a downward inclined surface 16. The sliding hook block 12 can rotate relative to the pin 15. When the sliding hook block 12 is inserted into the first slot 26, the first inclined surface 261 can exert a downward squeezing force on it, causing the hook part 13 to rotate downward and be inserted into the slot 29, thus ensuring the stability of the mold closing between the hook part 13 and the core pull seat 25.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage core-pulling structure for a plastic mold, comprising two first slide seats arranged opposite each other, and a second slide seat arranged on one side between the two first slide seats; a receiving groove is further provided at the lower part of one end of the second slide seat, characterized in that, A core-pulling translation component is installed on one side of each of the first row positions, and a linked core-pulling component is installed on each side of the second row positions corresponding to the core-pulling translation component. Each core-pulling translation component includes a first fixing block mounted on the first row position and a row position hook block connected to one end of the first fixing block. The row position hook block has a downwardly curved hook portion at its end near the linked core-pulling component. A first mounting groove is formed on one side of the second row position, and a first insertion hole is also formed inside the second row position, with one end of the first insertion hole extending into the first mounting groove. A second insertion hole is also formed inside the second row position, with the inner diameter of the second insertion hole being smaller than the inner diameter of the first insertion hole, and both ends of the second insertion hole extending into the first insertion hole and the receiving portion, respectively. The linkage core-pulling assembly includes a second fixing block and a core-pulling seat. The second fixing block is installed in the first mounting groove. A first slot is provided at one end of the second fixing block near the sliding hook block, and a third insertion hole is provided at the lower part of the inner wall of one side of the first slot, which extends into the first insertion hole. One end of the core-pulling seat is arranged in the first slot, and the other end of the core-pulling seat moves through the third insertion hole and is then moved into the first insertion hole. A limiting boss is also provided at the other end of the core-pulling seat, and the diameter of the limiting boss is larger than the inner diameter of the third insertion hole. A core-pulling rod is also connected to one side of the limiting boss, and the core-pulling rod moves through the second insertion hole. A slot that matches the hook part is also provided at the top of one end of the core-pulling seat.

2. The multi-stage core-pulling structure for plastic molds according to claim 1, characterized in that, The linkage core-pulling assembly also includes a first spring sleeved on the core-pulling rod, and the two ends of the first spring abut against one side of the limiting boss and the inner wall of one end of the first insertion hole, respectively.

3. The multi-stage core-pulling structure for plastic molds according to claim 1, characterized in that, One end of the first fixing block is provided with a second mounting groove; a pin is also installed on the first fixing block, which is arranged horizontally through the second mounting groove; the other end of the positioning hook block is inserted into the second mounting groove and sleeved on the pin.

4. The multi-stage core-pulling structure for plastic molds according to claim 1, characterized in that, The top inner wall of the first slot is also provided with a first inclined surface that slopes upward toward the first row seat, and the upper part of the first inclined surface extends to the opening of the first slot; the top outer wall of the hook part is also provided with a second inclined surface that slopes downward.

5. The multi-stage core-pulling structure for plastic molds according to claim 1, characterized in that, Each of the two first row seats has a concave first arc-shaped surface at one end facing each other, and the second row seat has a concave second arc-shaped surface at one end. The second arc-shaped surface and the two first arc-shaped surfaces together form a product forming surface with a semi-elliptical structure. The receiving groove is located at the lower part of the second arc-shaped surface.

6. The multi-stage core-pulling structure for plastic molds according to claim 5, characterized in that, A locking block is also provided at the lower part of the second arc-shaped surface near the receiving groove.

7. The multi-stage core-pulling structure for plastic molds according to claim 1, characterized in that, It also includes three core-pulling cylinders; one of the core-pulling cylinders is connected to the second row seat, and the other two core-pulling cylinders are respectively connected to a first row seat.

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