A forming die for a door access plastic part

Abstract

This utility model relates to the field of plastic mold design technology, specifically a molding mold for access control plastic parts, including a rear mold and a front mold. The rear mold includes a base plate, a B plate, and a rear mold core. The B plate is mounted on the top of the base plate via a square iron, and the rear mold core is installed inside the B plate. A wear-resistant plate is mounted on the surface of the B plate via screws, and a sliding seat is placed on the surface of the wear-resistant plate. A sliding insert is mounted on the surface of the sliding seat via bolts. A wear-resistant block is mounted on the surface of the B plate, and a T-shaped block is placed on the surface of the wear-resistant block. A rear mold insert is mounted on the surface of the B plate, and a through-type lower core is movably connected inside the rear mold insert. This utility model eliminates the need for an additional support plate below the B plate, as is required in traditional molds, to achieve mold opening and release with a reverse undercut in another direction. It achieves mold opening and release with a reverse undercut by adding mechanisms below and behind the sliding seat, maintaining the mold height while reducing mold price and injection molding production costs.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold design technology, specifically a molding mold for access control plastic parts. Background Technology

[0002] The current product is a plastic access control component. This product has two undercuts on the side of the mold, such as... Figure 6 One is at point a on the left horizontal side, and the other is at point b on the left diagonally downward. The undercut on the left horizontal side can be solved by making a sliding movement to disengage the undercut, but the undercut on the left diagonally downward requires a different structure. The conventional approach is to add an additional support plate below plate B. This support plate is used to move away from plate B as the driving force, and a bottom core-pulling structure is used to disengage the undercut.

[0003] However, this approach would increase the height of the mold and require larger machines for production, thus increasing the price of the mold and the cost of injection molding. There is an urgent need for a molding mold for access control plastic parts. Utility Model Content

[0004] The purpose of this utility model is to provide a molding die for access control plastic parts, so as to solve the problem mentioned in the background art that the addition of an extra support plate will increase the height and cost of the die.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a molding die for access control plastic parts, comprising a rear half mold and a front half mold. The rear half mold includes a base plate, a B plate, and a rear mold core. The B plate is mounted on the top of the base plate via a square iron, and the rear mold core is installed inside the B plate. A wear-resistant plate is mounted on the surface of the B plate via screws, and a sliding seat is placed on the surface of the wear-resistant plate. A sliding insert is mounted on the surface of the sliding seat via bolts. A wear-resistant block is mounted on the surface of the B plate, and a T-shaped block is placed on the surface of the wear-resistant block. A rear mold insert is mounted on the surface of the B plate, and a through-hole lower core is movably connected inside the rear mold insert, with the bottom end of the lower core contacting the inclined surface of the T-shaped block.

[0006] Preferably, the front mold includes a panel, a stripper plate, an A plate, and a front mold core; the stripper plate is bolted to the bottom of the panel.

[0007] Preferably, plate A is fixedly attached to the surface of the stripper plate, and a front mold core is embedded inside plate A. The cavity formed by the front mold core and the rear mold core is used for injection molding of the product.

[0008] Preferably, a shovel is fixed to the surface of plate A by bolts, and an inclined guide post is placed inside the shovel, with the bottom end of the inclined guide post extending into the interior of the row seat.

[0009] Preferably, the surface of the T-shaped block is provided with a stop screw, the bottom end of which penetrates through the T-shaped block and interlocks with the surface of the wear-resistant block.

[0010] Preferably, a connecting block is provided on one side inside the T-shaped block, and a through fastening screw is provided inside the connecting block, with the top of the fastening screw passing through the connecting block and threadedly connected to the sliding seat.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The structure of the front half of the mold remains unchanged. However, in the rear half, a T-block and connecting block are added below the slide block, and the lower core puller is connected to the T-block. A wear-resistant block is added underneath and fixed to the rear mold core to increase the mold's lifespan. A stop screw is added for limiting movement. During implementation, the opening of plates A and B causes the slide block to move backward via the inclined guide post of the front mold. This backward movement moves the slide insert backward, disengaging the horizontal undercut. Simultaneously, the backward movement of the slide block causes the T-block to move as well. When the T-block retracts, its inclined surface causes the lower core puller to move downward, disengaging the oblique undercut and completing the mold opening. Therefore, this invention does not require an additional support plate below plate B as in traditional molds to achieve mold opening and disengagement of the undercut in another direction. By adding mechanisms below and behind the slide block, mold opening and disengagement of the undercut in another direction can be achieved, maintaining the mold height while reducing mold price and injection molding production costs. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the mold-closed state of this utility model;

[0014] Figure 2 This is a cross-sectional view of the mold-closed state of this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the mold-opening state of this utility model;

[0016] Figure 4 This is a cross-sectional view of the mold-opening state of this utility model;

[0017] Figure 5 For the present utility model Figure 2 Enlarged structural diagram at point "A" in the middle;

[0018] Figure 6 This is a schematic diagram of the inverted structure of the product according to this utility model.

[0019] In the diagram: 1. Rear mold half; 11. Base plate; 12. B plate; 13. Rear mold core; 2. Front mold half; 21. Panel; 22. Stripper plate; 23. A plate; 24. Front mold core; 3. Scraper; 4. Angled guide pillar; 5. Slide insert; 6. Slide seat; 61. Wear-resistant plate; 7. Rear mold insert; 8. Lower core puller; 9. T-block; 91. Connecting block; 92. Wear-resistant block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. In addition, the terms "first", "second", "third", "upper", "lower", "left", "right", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0021] The structure of the molding die for access control plastic parts provided by this utility model is as follows: Figure 1 , Figure 3 as well as Figure 4 As shown, the mold includes a rear mold 1 and a front mold 2. The rear mold 1 includes a base plate 11, a B plate 12, and a rear mold core 13. The B plate 12 is mounted on the top of the base plate 11 by a square iron, and the rear mold core 13 is installed inside the B plate 12. The front mold 2 includes a panel 21, a stripper plate 22, an A plate 23, and a front mold core 24. The stripper plate 22 is mounted on the bottom of the panel 21 by bolts. The A plate 23 is fixed to the surface of the stripper plate 22, and the front mold core 24 is embedded inside the A plate 23. The cavity formed by the front mold core 24 and the rear mold core 13 is used for injection molding of the product.

[0022] During implementation, the molten rubber is injected from the machine nozzle onto the nozzle on the panel 21, passes through the stripper plate 22, the front mold insert, the runner, the inlet, and is formed into the cavity by the front mold core 24 and the rear mold core 13.

[0023] Furthermore, such as Figure 2 as well as Figure 5As shown, a wear-resistant plate 61 is mounted on the surface of plate B 12 by screws, and a sliding seat 6 is placed on the surface of the wear-resistant plate 61. A sliding insert 5 is mounted on the surface of the sliding seat 6 by bolts. A wear-resistant block 92 is mounted on the surface of plate B 12, and a T-shaped block 9 is placed on the surface of the wear-resistant block 92. A rear mold insert 7 is mounted on the surface of plate B 12, and a through-hole lower core puller 8 is movably connected inside the rear mold insert 7. The bottom end of the lower core puller 8 contacts the inclined surface of the T-shaped block 9. A shovel 3 is fixed to the surface of plate A 23 by bolts. An inclined guide post 4 is placed inside the shovel 3, and the bottom end of the inclined guide post 4 extends into the interior of the sliding seat 6. A stop screw is provided on the surface of the T-shaped block 9. The bottom end of the stop screw passes through the T-shaped block 9 and interlocks with the surface of the wear-resistant block 92. A connecting block 91 is provided on one side inside the T-shaped block 9. A fastening screw passes through the connecting block 91, and the top end of the fastening screw passes through the connecting block 91 and is threadedly connected to the sliding seat 6.

[0024] The structure of the front half mold 2 remains unchanged. However, on the rear half mold 1, a T-shaped block 9 and a connecting block 91 are added below the slide seat 6. The lower core puller 8 is connected to the T-shaped block 9. A wear-resistant block 92 is added underneath and fixed to the rear mold core 13 to increase the mold life. At the same time, a stop screw is added for limiting the position. In practice, the slide seat 6 is moved backward by the inclined guide post 4 of the front mold when the A plate and B plate are opened. When it moves backward, it will drive the slide insert 5 to move backward, thereby disengaging the horizontal undercut. At the same time, the backward movement of the slide seat 6 will cause the T-shaped block 9 to move together. When the T-shaped block 9 moves backward, it will use its inclined surface to make the lower core puller 8 move downward, thereby disengaging the inclined undercut and completing the mold opening.

[0025] Working principle: During injection molding, molten rubber is injected from the nozzle of the machine into the sprue on the panel 21, passes through the stripper plate 22, the front mold insert, the runner, the sprue, and into the cavity formed by the front mold core 24 and the rear mold core 13. After pressure holding, cooling, and mold opening, under the action of springs and the action of the opening and closing device installed on the B plate 12, the sprue is guided by four long guide pillars on the panel 21. A 130mm gap is first opened between the stripper plate 22 and the A plate 23 to pull out the sprue. Then, the four plugs on the stripper plate 22 are stopped by screws, and a 10mm gap is opened between the panel 21 and the stripper plate 22 to loosen the sprue head. Then, a 150mm gap is opened between the A plate 23 and the B plate 12. During the mold opening process between plate A23 and plate B12, the slide seat 6 will move 8 mm to the left and rear under the action of the inclined guide pillar. When moving, the slide seat 6 will drive the slide insert 5 to perform horizontal release. At the same time, the movement of the slide seat 6 will drive the T-block 9 to move together through the connecting block 91. When the T-block 9 moves, it will pull the lower core pull 8 through its inclined angle to achieve oblique release. After release, the product will remain on the rear mold core 13. The ejector plate will eject the product 38 mm. One robot arm will pick up the product surface by suction and move it to the worktable. Another robot arm will take out the sprue material and move it to the waste cylinder. The mold will close normally, and the injection filling will be performed to repeat the next cycle.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A molding die for forming an access plastic part, comprising a back half (1) and a front half (2), characterized in that: The rear mold (1) includes a base plate (11), a B plate (12), and a rear mold core (13). The B plate (12) is mounted on the top of the base plate (11) by a square iron, and the rear mold core (13) is installed inside the B plate (12). A wear-resistant plate (61) is mounted on the surface of the B plate (12) by screws, and a sliding seat (6) is placed on the surface of the wear-resistant plate (61). A sliding insert (5) is mounted on the surface of the sliding seat (6) by bolts. A wear-resistant block (92) is mounted on the surface of the B plate (12), and a T-shaped block (9) is placed on the surface of the wear-resistant block (92). A rear mold insert (7) is mounted on the surface of the B plate (12), and a through-hole lower core puller (8) is movably connected inside the rear mold insert (7). The bottom end of the lower core puller (8) is in contact with the inclined surface of the T-shaped block (9).

2. The forming die for a door access plastic part according to claim 1, wherein: The front half mold (2) includes a panel (21), a stripper plate (22), an A plate (23), and a front mold core (24); the bottom of the panel (21) is fitted with a stripper plate (22) by bolts.

3. The forming die for a door access plastic part according to claim 2, wherein: The surface of the stripper plate (22) is fixed with an A plate (23), and the interior of the A plate (23) is inlaid with a front mold core (24). The cavity formed by the front mold core (24) and the rear mold core (13) is used for injection molding of the product.

4. The forming die for a door access plastic part according to claim 3, wherein: The surface of the A plate (23) is fixed with a shovel (3) by bolts. An inclined guide post (4) is placed inside the shovel (3) at an angle, and the bottom end of the inclined guide post (4) extends into the interior of the row seat (6).

5. The forming die for a door access plastic part of claim 1, wherein: The surface of the T-shaped block (9) is provided with a stop screw, the bottom end of which penetrates through the T-shaped block (9) and engages with the surface of the wear-resistant block (92).

6. The forming die for access control plastic parts according to claim 1, characterized in that: A connecting block (91) is provided on one side inside the T-shaped block (9). A through fastening screw is provided inside the connecting block (91), and the top of the fastening screw passes through the connecting block (91) and is threadedly connected to the slide seat (6).

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