Injection mold with automatic insert resetting mechanism

Abstract

The utility model discloses an injection mold with an automatic insert resetting mechanism. The injection mold comprises an upper mold cavity and a lower mold cavity which are matched with each other to form an injection molding cavity, the driving transverse plate is provided with a reset ejector plate, the support seat is arranged at the bottom of the lower mold cavity, and a demolding ejector pin which is arranged in the lower mold cavity is arranged in the middle of the support seat in a sliding manner, and the mold closing mechanism has the beneficial effects that in the mold closing process, the reset ejector pin pushes the driving transverse plate, so that the insert is reset in advance through the reset ejector pin; it is ensured that the insert is located at the correct position before the lower mold cavity and the upper mold cavity are completely closed; the risk that the insert is collided possibly when the mold is closed is effectively avoided, and the mold repairing frequency and cost are reduced; under pushing of the driving sliding plate, the driving transverse plate drives the reset ejector pin and the insert to reset through the traction rod and the connecting sliding block, and the accuracy of the insert at the preset position is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold with an insert automatic resetting mechanism. Background Art

[0002] During silicone mold closing, if the insert is not reset in time or reset in time, when the upper mold moves close to the insert, the two will collide, which may cause damage to the insert, deformation of the mold or defects in the injection molded product.

[0003] Currently, during resetting, some methods use manual force to reset the inserts in the mold. Manual operation is simple and low-cost, and is suitable for small-sized molds or small-scale production. However, the accuracy is greatly affected by human factors. Another method is pneumatic or hydraulic reset, which is suitable for small and medium-sized molds, but requires air source equipment, which is relatively expensive. It cannot achieve automatic resetting of the parts through the mold's own clamping power, and cannot effectively avoid the problem of insert damage. Utility Model Content

[0004] The purpose of the utility model is to provide an injection mold with an insert automatic reset mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an injection mold with an automatic reset mechanism for inserts, comprising:

[0006] The upper mold cavity and the lower mold cavity cooperate with each other to form the injection cavity;

[0007] A support seat is placed at the bottom of the lower mold cavity, and a demoulding ejector pin is slidably provided in the middle of the support seat and is placed inside the lower mold cavity;

[0008] An insert is placed in the cavity at the top of the lower mold cavity, and a reset portion is provided at the bottom of the insert. The reset portion includes a reset ejector pin connected to the insert, and a driving horizontal plate for driving the insert to reset is provided below the reset ejector pin;

[0009] The reset top plate is placed on the outside of the upper mold cavity and extends from the bottom of the lower mold cavity. When the mold is closed, the reset top plate pushes the driving cross plate to drive the insert to reset first.

[0010] Preferably, a sliding plate is slidably connected to the middle of the support seat, and a No. 1 spring is slidably connected between the sliding plate and the lower mold cavity.

[0011] Preferably, the bottom of the demoulding ejector pin is fixedly connected to the sliding plate, and the top of the demoulding ejector pin extends into the mold cavity of the lower mold cavity.

[0012] Preferably, the reset portion further comprises a limiting sliding sleeve fixedly connected to the outer side of the lower mold cavity, the interior of the limiting sliding sleeve is slidably connected to a driving slide, and the driving slide corresponds to the reset top plate one-to-one.

[0013] Preferably, a sliding hole is provided inside the lower mold cavity, a connecting slider is slidably connected inside the sliding hole, and the connecting slider is fixedly connected to the reset ejector pin.

[0014] Preferably, the bottom of the driving slide plate is fixedly connected to the end of the driving transverse plate, and the middle of the driving transverse plate is slidably connected to a traction rod, which extends into the sliding hole and is fixedly connected to the connecting slider.

[0015] Preferably, a No. 2 spring is provided on the outside of the traction rod, inside the sliding hole, and at the bottom of the driving cross plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: during the mold closing process, the reset ejector plate is used to push the driving cross plate, and then the insert is reset in advance by the reset ejector pin, ensuring that the insert is in the correct position before the lower mold cavity and the upper mold cavity are completely closed; effectively avoiding the risk of insert collision when the mold is closed, reducing the number of mold repairs and costs; under the push of the driving slide, the driving cross plate drives the reset ejector pin and the insert to reset through the traction rod and the connecting slider, ensuring the accuracy of the insert in the preset position; when the driving cross plate continues to move downward on the outside of the traction rod, it will compress the No. 2 spring at the bottom, providing additional reset force, ensuring that the insert can stably maintain the preset position after resetting, and improving the stability and reliability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the driving slide of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the driving horizontal plate of the utility model;

[0020] Figure 4 This is an enlarged view of point A of the present utility model.

[0021] In the figure: 1. Lower mold cavity; 2. Upper mold cavity; 3. Support seat; 4. Spring No. 1; 5. Sliding plate; 6. Demolding ejector pin; 7. Driving cross plate; 8. Limiting sleeve; 9. Driving slide plate; 10. Insert; 12. Sliding hole; 13. Pull rod; 14. Spring No. 2; 15. Connecting slider; 16. Reset ejector pin; 17. Reset ejector plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1 、 2 As shown in Figures 3 and 4, the utility model provides a technical solution: an injection mold with an automatic reset mechanism for an insert, comprising: an upper mold cavity 2 and a lower mold cavity 1 that cooperate with each other to form an injection cavity; a support seat 3 is fixed to the bottom of the lower mold cavity 1 by bolts, and a demoulding ejector 6 located inside the lower mold cavity 1 is slidably provided in the middle of the support seat 3; the insert 10 is lifted and installed in the cavity at the top of the lower mold cavity 1, and a reset part is provided at the bottom of the insert 10, and the reset part includes a reset ejector 16 connected to the insert 10, and a driving cross plate 7 for driving the insert 10 to reset is provided below the reset ejector 16; the reset ejector plate 17 is fixed to the outside of the upper mold cavity 2 by bolts and extends from the bottom of the lower mold cavity 1, and is used to push the driving cross plate 7 to drive the insert 10 to reset first when the mold is closed.

[0024] It should be noted that, in the present invention, when the mold is closed, the reset top plate 17 drives the driving slide 9 to drive the driving cross plate 7 to reset first, and the driving cross plate 7 drives the reset ejector 16 to move downward through the traction rod 13, and the reset ejector 16 drives the insert 10 to reset downward. When the lower mold cavity 1 and the upper mold cavity 2 are completely closed, the insert 10 is placed in the reset position in advance, which can effectively avoid the risk of collision with the insert when the mold is closed and avoid repeated mold repair.

[0025] See also Figure 1 As shown, the middle part of the support seat 3 is slidably connected to a sliding plate 5, and a No. 1 spring 4 is slidably connected between the sliding plate 5 and the lower mold cavity 1. The bottom of the demolding ejector 6 is fixed to the sliding plate 5, and the top of the demolding ejector 6 extends into the mold cavity of the lower mold cavity 1.

[0026] It should be noted that, in the present invention, when the lower mold cavity 1 and the upper mold cavity 2 are separated, under the action of the No. 2 spring 14, the reset ejector 16 drives one end of the insert 10 to separate from the mold cavity of the lower mold cavity 1, and then drives the sliding plate 5 to rise through the driving component, and the sliding plate 5 drives the demoulding ejector 6 to lift the other end of the molded workpiece, and then pull the workpiece out from the end of the insert 10 from the side.

[0027] See also Figure 3 、 4As shown, the reset part also includes a limiting sleeve 8 fixedly connected to the outside of the lower mold cavity 1, and the internal sliding connection of the limiting sleeve 8 is connected to the driving slide 9, and the driving slide 9 corresponds one-to-one with the reset top plate 17. A sliding hole 12 is opened inside the lower mold cavity 1, and the internal sliding connection of the sliding hole 12 is connected to the connecting slider 15, and the connecting slider 15 is fixed to the reset ejector pin 16.

[0028] It should be noted that, in the present invention, when the lower mold cavity 1 and the upper mold cavity 2 are closed, the lower mold cavity 1 and the upper mold cavity 2 come into contact first, and the reset top plate 17 pushes the driving slide 9 to slide inside the limiting sleeve 8, and the driving slide 9 drives the driving cross plate 7 to move downward, and the driving cross plate 7 drives the connecting slider 15 and the reset ejector pin 16 to move inside the sliding hole 12 through the traction rod 13, and the reset ejector pin 16 drives the insert 10 to reset, so that the insert 10 has been reset when the lower mold cavity 1 and the upper mold cavity 2 are not completely closed.

[0029] See also Figure 2 、 3 As shown in Figure 4, the bottom of the driving slide plate 9 is fixedly connected to the end of the driving cross plate 7, and the middle of the driving cross plate 7 is slidably connected with a traction rod 13. The traction rod 13 extends into the sliding hole 12 and is fixedly connected to the connecting slider 15. A No. 2 spring 14 is provided on the outside of the traction rod 13, inside the sliding hole 12, and at the bottom of the driving cross plate 7.

[0030] It should be noted that, in the present invention, after the insert 10 is reset, the driving slide 9 drives the driving cross plate 7 to continue to move downward along the traction rod 13, and the connecting slider 15 compresses the No. 2 spring 14 inside the sliding hole 12. A No. 2 spring 14 is also provided on the outside of the traction rod 13 and between the bottom and the driving cross plate 7. When the driving cross plate 7 continues to move downward on the outside of the traction rod 13, the traction rod 13 at the bottom is compressed, and under the action of the elastic force, the insert 10 is in the preset position.

[0031] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one such feature.

[0033] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold with an insert automatic reset mechanism, characterized in that: include: An upper mold cavity (2) and a lower mold cavity (1) cooperate with each other to form an injection molding cavity; A support seat (3), the support seat (3) is placed at the bottom of the lower mold cavity (1), and a demoulding ejector pin (6) is slidably provided in the middle of the support seat (3) and is placed inside the lower mold cavity (1); An insert (10), the insert (10) is placed in a cavity at the top of the lower mold cavity (1), a reset portion is provided at the bottom of the insert (10), the reset portion includes a reset ejector pin (16) connected to the insert (10), and a driving transverse plate (7) for driving the insert (10) to reset is provided below the reset ejector pin (16); The reset top plate (17) is placed on the outside of the upper mold cavity (2) and extends from the bottom of the lower mold cavity (1). When the mold is closed, the reset top plate (17) pushes the driving cross plate (7) to drive the insert (10) to reset first.

2. The injection mold with an insert automatic reset mechanism according to claim 1, characterized in that: A sliding plate (5) is slidably connected to the middle of the support seat (3), and a No. 1 spring (4) is slidably connected between the sliding plate (5) and the lower mold cavity (1).

3. The injection mold with an insert automatic reset mechanism according to claim 1, characterized in that: The bottom of the demoulding ejector pin (6) is fixedly connected to the sliding plate (5), and the top of the demoulding ejector pin (6) extends into the mold cavity of the lower mold cavity (1).

4. The injection mold with an insert automatic reset mechanism according to claim 1, characterized in that: The reset portion further comprises a limiting sliding sleeve (8) fixedly connected to the outside of the lower mold cavity (1); the interior of the limiting sliding sleeve (8) is slidably connected to a driving slide plate (9); and the driving slide plate (9) corresponds one-to-one to the reset top plate (17).

5. The injection mold with an insert automatic reset mechanism according to claim 4, characterized in that: A sliding hole (12) is provided inside the lower mold cavity (1), and a connecting slider (15) is slidably connected inside the sliding hole (12), and the connecting slider (15) is fixedly connected to a reset ejector pin (16).

6. The injection mold with an insert automatic reset mechanism according to claim 5, characterized in that: The bottom of the driving slide plate (9) is fixedly connected to the end of the driving transverse plate (7), and the middle of the driving transverse plate (7) is slidably connected to a traction rod (13). The traction rod (13) extends into the sliding hole (12) and is fixedly connected to the connecting slider (15).

7. The injection mold with an insert automatic reset mechanism according to claim 6, characterized in that: A second spring (14) is provided on the outside of the traction rod (13), inside the sliding hole (12), and at the bottom of the driving transverse plate (7).

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