Simple rotary mold opening mechanism for plastic mold

Abstract

The utility model discloses a simple rotary mould opening mechanism for a plastic mould, which comprises a lower plastic mould and an upper plastic mould, slide block mounting grooves are arranged on two sides of the top of the lower plastic mould, slide block seats are mounted in the slide block mounting grooves in a sliding manner, a linkage pushing structure is arranged between the slide block seats and the upper plastic mould, and the linkage pushing structure is connected with the upper plastic mould. Through the arrangement of the sliding block seat, the sliding block fixing seat, the sliding block swing rod and the sliding block body, when an upper plastic mold and a lower plastic mold are opened, the sliding block seat is driven by the sliding block inclined guide column to move towards the outer side of the lower plastic mold, the sliding block swing rod is driven by the sliding block seat to synchronously move when the sliding block seat moves, and the sliding block body is driven by the sliding block swing rod to rotate; and one end of the sliding block body rotates into the forming cavity, so that secondary ejection can be realized, ejection and mold stripping can be carried out aiming at a product structure which has a bent pipe radian and cannot be subjected to linear core pulling, the device space requirement is relatively small, and a device for increasing an external acting force does not need to be considered.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic moulds, and particularly relates to a simple rotary mould opening mechanism for plastic moulds. Background Art

[0002] Moulds are known as the "mother of industry" and are the core technology of the manufacturing industry. Compared with metals, stones, and woods, plastic products have the advantages of low cost and strong plasticity, and are widely used in the national economy. The plastic industry occupies an extremely important position in the world today. At present, most of the ejection mechanisms of plastic moulds use external driving parts to drive the ejector plate and ejector pins to eject the products in the forming cavity out of the mould. The structure is complex, the cost of adding external devices is high, and the maintenance cost is high. Moreover, for product structures with curved pipe arcs that cannot be core-pulled linearly, the ejection effect is not good. Therefore, the inventor designs a simple rotary mould opening mechanism for plastic moulds to improve the above problems. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a simple rotary mould opening mechanism for plastic moulds, which can effectively solve the problem of forming and ejecting products with curved pipe arcs, enable the products to be smoothly demoulded, protect the requirements of product appearance functions, etc., and the device has a simple structure, low manufacturing and maintenance costs.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A simple rotary mould opening mechanism for plastic moulds includes a plastic mould lower mould and a plastic mould upper mould. Both sides of the top of the plastic mould lower mould are provided with slider installation grooves. A slider seat is slidably installed inside the slider installation grooves. A linkage pushing structure is arranged between the slider seat and the plastic mould upper mould, which is used to push the slider seat to move outward of the plastic mould lower mould when the plastic mould lower mould and the plastic mould upper mould are opened. One side of the slider installation groove close to the forming cavity of the plastic mould lower mould is fixedly connected with a slider fixing seat. One end of the slider fixing seat close to the forming cavity of the plastic mould lower mould is rotatably connected with a slider body. One end of the slider body is movably hinged with a slider swing rod between the slider seat.

[0006] Preferably, the center of the slider body is rotatably connected with the slider fixing seat. The end of the slider body far from the slider swing rod can rotate into the forming cavity of the plastic mould lower mould. An arc-shaped limiting groove is opened on the slider fixing seat. A limiting block slidably installed in the arc-shaped limiting groove is arranged on one side of the slider body.

[0007] Preferably, the linkage pushing structure includes a guide post through hole opened on the slider seat and penetrating it, and a slider inclined guide post fixedly connected to the bottom of the plastic mould upper mould. The slider inclined guide post corresponds to the position of the slider seat and one end passes through the guide post through hole.

[0008] Preferably, the two slider angled guide pillars are in a V-shaped structure, and the distance between the two slider angled guide pillars gradually decreases in the direction from the lower mold of the plastic mold to the upper mold of the plastic mold.

[0009] Preferably, the linkage pushing structure further includes a slider seat spring. An installation hole is provided on one side of the slider seat close to the slider fixing seat. The slider seat spring is placed in the installation hole, with one end fixedly connected to the inner wall of the installation hole and the other end fixedly connected to the inner wall of the slider installation groove.

[0010] Preferably, an avoidance groove for the slider angled guide pillar to pass through is provided in the slider installation groove of the lower mold of the plastic mold.

[0011] Preferably, a slider ejector rod is fixedly connected to one side of the slider seat close to the slider body, and one end of the slider ejector rod abuts against the slider body.

[0012] Preferably, slider pressing strips are fixedly connected to both sides of the slider installation groove and at the position of the slider seat, and the slider seat is slidably installed between the two slider pressing strips.

[0013] Preferably, a limit screw is threadedly connected inside the slider installation groove near the outer end of the upper mold of the plastic mold, and the end of the limit screw protrudes into the slider installation groove.

[0014] Preferably, a slider lifter is fixedly connected to the upper mold of the plastic mold at the position of the slider angled guide pillar, and a mating sliding inclined surface is provided on the side of the slider lifter opposite to the slider seat.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] (1) By providing the slider seat, slider fixing seat, slider swing rod and slider body in the present utility model, when the upper mold and the lower mold of the plastic mold are opened, the slider seat is driven by the slider angled guide pillar to move outward along the lower mold of the plastic mold. When the slider seat moves, it drives the slider swing rod to move synchronously, and the slider body is driven to rotate by the slider swing rod. One end of the slider body rotates into the molding cavity, so that secondary ejection can be realized, and products with curved pipe arcs and structures that cannot be directly core-pulled can be ejected from the mold. The device requires less space, does not need to consider adding devices for external force, the mechanism structure is stable, the use failure rate is extremely low, and the replacement and maintenance costs are low.

[0017] (2) By providing the slider ejector rod in the present utility model, when the upper mold and the lower mold of the plastic mold are closed, the front end of the slider ejector rod pushes the slider body to move in advance compared with the slider swing rod, reducing the fatigue use of the slider swing rod and thus reducing the probability of mold damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an overall three-dimensional structure schematic diagram of the simple rotary mold opening mechanism of the plastic mold of the present utility model;

[0019] Figure 2 This is a schematic structural diagram of the slider seat, slider fixing seat and slider body of the present utility model.

[0020] In the figure: 1, lower plastic mold; 101, slider installation groove; 2, slider seat; 201, guide post through hole; 3, slider fixing seat; 4, slider pressing strip; 5, slider seat spring; 6, slider body; 7, slider swing rod; 8, limit screw; 9, upper plastic mold; 10, slider inclined guide post; 11, slider lifter; 12, slider ejector rod. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment:

[0023] Please refer to Figure 1 - Figure 2 , this embodiment provides a simple rotary mold opening mechanism for a plastic mold, including a lower plastic mold 1 and an upper plastic mold 9. Slider installation grooves 101 are provided on both sides of the top of the lower plastic mold 1. A slider seat 2 is slidably installed inside the slider installation groove 101. A linkage pushing structure is provided between the slider seat 2 and the upper plastic mold 9, which is used to push the slider seat 2 to move outward from the lower plastic mold 1 when the lower plastic mold 1 and the upper plastic mold 9 are opened. A slider fixing seat 3 is fixedly connected to the side of the slider installation groove 101 close to the molding cavity of the lower plastic mold 1. One end of the slider fixing seat 3 close to the molding cavity of the lower plastic mold 1 is rotatably connected to a slider body 6. A slider swing rod 7 is movably hinged between one end of the slider body 6 and the slider seat 2. The center of the slider body 6 is rotatably connected to the slider fixing seat 3. The end of the slider body 6 away from the slider swing rod 7 can rotate into the molding cavity of the lower plastic mold 1. When in use, when the upper plastic mold 9 and the lower plastic mold 1 are opened, the slider seat 2 is pushed to move outward from the lower plastic mold 1 through the linkage pushing structure. When the slider seat 2 moves, it drives the slider swing rod 7 to move synchronously, and drives the slider body 6 to rotate through the slider swing rod 7, so as to realize secondary ejection. It is simple to manufacture, low in cost, but stable and durable in structure. It can be used for products with curved pipe arcs and structures that cannot be core-pulled linearly for ejection and demolding. It has high practicability, requires less space for the device, and does not need to consider adding devices for external force.

[0024] In this embodiment, an arc-shaped limiting groove is formed on the slider fixing seat 3, and a limiting block is arranged on one side of the slider body 6 and is slidably installed in the arc-shaped limiting groove. By providing the arc-shaped limiting groove and the limiting block, the slider body 6 rotates and ejects according to a preset track during rotation, improving the stability of the rotational movement of the slider body 6.

[0025] In this embodiment, as Figure 1 and Figure 2 shown, the linkage pushing structure includes a guide post through hole 201 formed in the slider seat 2 and penetrating it, and a slider inclined guide post 10 fixedly connected to the bottom of the plastic mold upper mold 9. The slider inclined guide post 10 corresponds to the position of the slider seat 2 and one end passes through the guide post through hole 201. The two slider inclined guide posts 10 are in an eight-shaped structure, and the distance between the two slider inclined guide posts 10 gradually decreases in the direction from the plastic mold lower mold 1 to the plastic mold upper mold 9. By providing the slider inclined guide post 10, when the plastic mold upper mold 9 and the plastic mold lower mold 1 are opened, the plastic mold upper mold 9 gradually moves away from the plastic mold lower mold 1, so that the distance between the parts of the two slider inclined guide posts 10 in the guide post through hole 201 of the slider seat 2 gradually increases, thereby pushing the slider seat 2 to move outward of the plastic mold lower mold 1 through the slider inclined guide post 10, which helps the formed product to be demolded better.

[0026] In this embodiment, as Figure 2 shown, the linkage pushing structure further includes a slider seat spring 5. An installation hole is formed on one side of the slider seat 2 close to the slider fixing seat 3. The slider seat spring 5 is placed in the installation hole, and one end is fixedly connected to the inner wall of the installation hole, and the other end is fixedly connected to the inner wall of the slider installation groove 101. By providing the slider seat spring 5, when the plastic mold upper mold 9 and the plastic mold lower mold 1 are closed, the slider seat 2 approaches the molding cavity of the plastic mold lower mold 1, thereby squeezing and contracting the slider seat spring 5. When the plastic mold upper mold 9 and the plastic mold lower mold 1 are opened, the slider seat 2 moves outward of the plastic mold lower mold 1 under the action of the slider inclined guide post 10. At the same time, the slider seat spring 5 generates an outward push on the slider seat 2, which helps the slider seat 2 to move more smoothly.

[0027] In this embodiment, an avoidance groove for the slider inclined guide post 10 to pass through is formed in the slider installation groove 101 of the plastic mold lower mold 1 to prevent obstruction to the moving stroke of the slider inclined guide post 10.

[0028] In this embodiment, as Figure 2As shown, on one side of the slider seat 2 close to the slider body 6, a slider ejector rod 12 is fixedly connected. One end of the slider ejector rod 12 abuts against the slider body 6. The slider ejector rod 12 moves synchronously with the slider seat 2. Since the components of the simple rotary mold opening mechanism of the plastic mold have the need for linear or rotary motion functions and cannot be tightly fitted, there are certain gaps in the assembly. When the upper plastic mold 9 and the lower plastic mold 1 are closed, the front end of the slider ejector rod 12 pushes the slider body 6 to move in advance compared with the slider swing rod 7, reducing the fatigue use of the slider swing rod 7 and thus reducing the probability of mold damage. It should be noted that if the product is large and the designed components have sufficient strength, the slider ejector rod 12 can be not designed.

[0029] In this embodiment, as Figure 1 and Figure 2 shown, on both sides of the slider installation groove 101 and at the position of the slider seat 2, slider pressure strips 4 are fixedly connected. The slider seat 2 is slidably installed between the two slider pressure strips 4. By setting the slider pressure strips 4, it plays a role in limiting and guiding the movement of the slider seat 2, ensuring the movement path of the slider seat 2, and improving the stability and smoothness of the movement of the slider seat 2.

[0030] In this embodiment, as Figure 1 shown, a limit screw 8 is threadedly connected inside the slider installation groove 101 near the outer end of the upper plastic mold 9. The end of the limit screw 8 protrudes into the slider installation groove 101. By setting the limit screw 8, it plays a role in limiting and blocking the slider seat 2, preventing the slider seat 2 from disengaging from the slider installation groove 101.

[0031] In this embodiment, as Figure 1 shown, a slider lifter 11 is fixedly connected to the upper plastic mold 9 at the position of the slider angled guide post 10. A mating sliding inclined surface is provided on the side of the slider lifter 11 opposite to the slider seat 2. When the upper plastic mold 9 and the lower plastic mold 1 are closed, through the abutment of the inclined surface of the slider lifter 11 and the slider seat 2, it is used to press and lock the position of the mold slider. During the mold closing process, the slider lifter 11 can ensure that the slider seat 2 remains stable and immovable, preventing displacement caused by the injection pressure, thereby ensuring the dimensional accuracy and shape consistency of the product.

[0032] Working principle: When in use, when the upper plastic mold 9 and the lower plastic mold 1 are opened, the upper plastic mold 9 gradually moves away from the lower plastic mold 1, so that the distance between the two slider angled guide posts 10 inside the guide post through holes 201 of the slider seat 2 gradually increases. Thus, the slider seat 2 is pushed by the slider angled guide posts 10 to move outward of the lower plastic mold 1. When the slider seat 2 moves, it drives the slider swing rod 7 to move synchronously. The slider body 6 is driven by the slider swing rod 7 to rotate. One end of the slider body 6 rotates into the forming cavity, thereby enabling secondary ejection. It is simple to manufacture, low in cost, but has a stable and durable structure. It can be used for products with curved pipe arcs and structures that cannot be core-pulled linearly for ejection and demolding, and has high practicality.

[0033] The above embodiments are preferred implementation solutions of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious substitution without departing from the concept of the technical solution is within the protection scope of the present utility model.

Claims

1. A simple rotary mold opening mechanism for a mold, comprising a lower mold (1) and an upper mold (9), characterized in that: Both sides of the top of the lower mold (1) are provided with slider installation grooves (101), a slider seat (2) is slidably installed inside the slider installation groove (101), a linkage pushing structure is provided between the slider seat (2) and the upper mold (9), and is used to push the slider seat (2) to move toward the outside of the lower mold (1) when the lower mold (1) and the upper mold (9) are opened, a slider fixing seat (3) is fixedly connected to the slider installation groove (101) on one side close to the molding cavity of the lower mold (1), and a slider body (6) is rotatably connected to the slider fixing seat (3) on one end close to the molding cavity of the lower mold (1), and a slider swing rod (7) is movably hinged between one end of the slider body (6) and the slider seat (2).

2. A simple rotary mold opening mechanism for plastic mold according to claim 1, characterized in that: The center of the slider body (6) is rotatably connected to the slider fixing seat (3); one end of the slider body (6) away from the slider swing rod (7) can be rotated into the molding cavity of the lower mold (1); an arc-shaped limiting groove is provided on the slider fixing seat (3); and a limiting block slidably installed in the arc-shaped limiting groove is provided on one side of the slider body (6).

3. The simple rotary mold opening mechanism for plastic mold according to claim 1, characterized in that: The linkage pushing structure comprises a guide post through hole (201) formed on the slider seat (2) and passing through the guide post, and a slider oblique guide post (10) fixedly connected to the bottom of the upper mold (9) of the plastic mold, wherein the slider oblique guide post (10) corresponds to the position of the slider seat (2) and one end of the slider oblique guide post (10) passes through the guide post through hole (201).

4. A simple rotary mold opening mechanism for plastic mold according to claim 3, characterized in that: The two slider oblique guide pillars (10) are in an eight-shaped structure, and the distance between the two slider oblique guide pillars (10) gradually decreases in a direction from the lower mold (1) to the upper mold (9).

5. The simple rotary mold opening mechanism for plastic mold according to claim 3, characterized in that: The linkage pushing structure further comprises a slider seat spring (5); a mounting hole is provided on one side of the slider seat (2) close to the slider fixing seat (3); the slider seat spring (5) is disposed in the mounting hole, with one end fixedly connected to the inner wall of the mounting hole and the other end fixedly connected to the inner wall of the slider mounting groove (101).

6. The simple rotary mold opening mechanism for plastic mold according to claim 3, characterized in that: An avoidance groove for the slider oblique guide column (10) to pass through is provided in the slider installation groove (101) of the lower mold (1) of the plastic mold.

7. The simple rotary mold opening mechanism for plastic mold according to claim 1, characterized in that: A slider push rod (12) is fixedly connected to one side of the slider seat (2) close to the slider body (6), and one end of the slider push rod (12) abuts against the slider body (6).

8. The simple rotary mold opening mechanism for plastic mold according to claim 1, characterized in that: Slider strips (4) are fixedly connected to the slider seat (2) on both sides of the slider installation groove (101), and the slider seat (2) is slidably installed between the two slider strips (4).

9. The simple rotary mold opening mechanism for plastic mold according to claim 1, characterized in that: A limit screw (8) is threadedly connected inside the slider installation groove (101) near the outer end of the upper mold (9), and the end of the limit screw (8) protrudes from the slider installation groove (101).

10. The simple rotary mold opening mechanism for plastic mold according to claim 1, characterized in that: A slider scraper (11) is fixedly connected to the slider oblique guide column (10) on the upper mold (9) of the plastic mold, and a matching inclined surface is provided on the side of the slider scraper (11) opposite to the slider seat (2).

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