A stripper pin structure adapted to a stamping die

Abstract

The utility model discloses a kind of demolding ejector pin structures suitable for punch die, it is related to the demolding technical field of punch die, including upper die, bottom die, feeding plate and punch plate, between the upper die and bottom die pass through hydraulic rod and alignment rod, stamping die is provided in the upper die, stamping die and punch plate correspond, stamping hole is provided in punch plate, and feeding plate is also installed on punch plate, the side of punch plate is also fixedly connected with force relief mechanism, insertion hole is opened in force relief mechanism, insertion hole is matched with insertion rod, the insertion rod is fixedly connected on pressure lever, pressure lever is arranged in the side of stamping die. The utility model is driven insertion rod insertion into force relief mechanism in the process of stamping die between upper die and bottom die, the end distance when force relief lever is ejected, after the operation of stamping die is finished, then can press inwards to force relief lever, so that gap is generated between stamping die and punch plate, and it is convenient to demould.

Description

Technical Field

[0001] This utility model relates to the field of demolding technology for stamping dies, specifically a demolding ejector pin structure adapted to stamping dies. Background Technology

[0002] Stamping dies are often molds specifically designed for stamping parts. Once the mold is customized for the stamping parts, mass stamping operations can be carried out. However, traditional stamping dies are not easy to demold, and they are prone to sticking during the demolding process.

[0003] Currently, the demolding of stamping dies still suffers from adhesion and demolding failure. For example, the stamping die for easy demolding disclosed in CN212121418U includes a horizontally arranged lower die and an upper die above it. The lower die and the upper die are parallel to each other and have a gap between them. A pressure block for stamping the base is provided between the upper die and the lower die. A transition plate is provided between the pressure block and the upper die. The upper die is bolted to the transition plate. Several receiving holes are opened on the upper surface of the pressure block. A transition hole is opened on the transition plate. A sliding hole is opened on the upper die. The receiving hole, the transition hole, and the sliding hole are arranged coaxially. The inner diameter of the transition hole is smaller than the inner diameter of the receiving hole and the sliding hole. A sliding screw is slidably connected in the sliding hole. The sliding screw passes through the transition hole and is bolted to the bottom of the receiving hole. A pre-compression spring is sleeved on the rod of the sliding screw located in the receiving hole. One end of the pre-compression spring abuts against the bottom of the receiving hole, and the other end abuts against the lower surface of the transition plate. This invention has the advantage of being able to demold from within the base. However, in this design, material tends to remain inside the holes during the demolding process, causing adhesion and making complete demolding difficult, which is not conducive to the reuse of the mold.

[0004] Therefore, in order to solve the above problems, the applicant needs to design a demolding ejector pin structure suitable for stamping dies. Utility Model Content

[0005] The purpose of this invention is to provide a demolding ejector pin structure adapted to stamping dies, so as to solve the problems mentioned in the background art of stamping dies being inconvenient for quick demolding and prone to sticking.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a demolding ejector pin structure adapted to a stamping die, comprising an upper die, a bottom die, a feeding plate, and a stamping plate. The upper die and the bottom die are connected by a hydraulic rod and an alignment rod. A stamping die is provided inside the upper die, and the stamping die and the stamping plate correspond to each other. A stamping hole is provided inside the stamping plate, and a feeding plate is also installed on the stamping plate. A pressure relief mechanism is fixedly connected to the side of the stamping plate. An insertion hole is provided inside the pressure relief mechanism, and the insertion hole matches an insertion rod. The insertion rod is fixedly connected to a pressure rod, and the pressure rod is located on the side of the stamping die.

[0007] Furthermore, an extrusion plate is provided at the bottom of the stamping plate, and multiple connecting rods are provided on the extrusion plate, with the top of the connecting rods directly contacting the bottom surface of the stamping plate.

[0008] Furthermore, the extrusion plate is provided with a second connecting rod, the bottom of which is connected to a collar, and a spring is connected to the collar, with the bottom end of the spring contacting the upper mold.

[0009] Furthermore, multiple extrusion plates are provided, and the multiple extrusion plates are disposed in the gap at the bottom of the stamping plate.

[0010] Furthermore, the side of the insertion rod is provided with elastic balls, and the elastic balls can contact the end of the force relief rod that extends into the force relief mechanism, and the force relief rod can slide in the longitudinal direction of the force relief mechanism.

[0011] Furthermore, the position of the first connecting rod corresponds to the position of the slot hole opened on the bottom surface of the stamping hole, and the center positions of the first connecting rod and the second connecting rod coincide.

[0012] Furthermore, the collar can be slidably connected to the second connecting rod, and the spring is equipped with damping, which can penetrate the collar and extend into the second connecting rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In the process of stamping and closing the upper and lower dies, the insert rods on the side of the stamping die and the stamping plate are driven into the force relief mechanism, and the force relief rod is pushed out by one end. After the stamping and closing operation is completed, the force relief rod can be pressed inward, so that a gap is created between the stamping die and the stamping plate, which facilitates demolding.

[0015] 2. Multiple extrusion plates are set at the bottom of the stamping plate to bear the pressure of stamping and mold closing. When demolding, the pressure on the extrusion plates is released, and the spring at the bottom of the extrusion plate will restore its elasticity and generate a rebound and vibration force on the extrusion plate, which will vibrate the material on the stamping plate and effectively prevent sticking after demolding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the pressure relief rod of this utility model;

[0018] Figure 3 This is a three-dimensional exploded view of the stamping plate of this utility model;

[0019] Figure 4 This is an exploded three-dimensional view of the upper mold of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the extrusion plate of this utility model.

[0021] In the diagram: 1. Upper die; 101. Stamping die; 102. Pressure rod; 103. Insert rod; 2. Hydraulic rod; 3. Alignment rod; 4. Bottom die; 5. Feeding plate; 6. Stamping plate; 7. Stamping hole; 8. Pressure relief mechanism; 801. Insertion hole; 9. Pressure relief rod; 10. Extrusion plate; 11. Connecting rod one; 12. Connecting rod two; 13. Collar; 14. Spring. Detailed Implementation

[0022] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-5 As shown, this utility model discloses a demolding ejector pin structure adapted to a stamping die, comprising an upper die 1, a bottom die 4, a feeding plate 5, and a stamping plate 6. The upper die 1 and the bottom die 4 are connected by a hydraulic rod 2 and an alignment rod 3. A stamping die 101 is provided inside the upper die 1, and the stamping die 101 corresponds to the stamping plate 6. A stamping hole 7 is provided inside the stamping plate 6, and the feeding plate 5 is also installed on the stamping plate 6. A pressure relief mechanism 8 is fixedly connected to the side of the stamping plate 6. An insertion hole 801 is provided inside the pressure relief mechanism 8, and the insertion hole 801 matches the insertion rod 103. The insertion rod 103 is fixedly connected to a pressure rod 102, which is located on the side of the stamping die 101. An elastic ball is provided on the side of the insertion rod 103, and the elastic ball can contact the end of the pressure relief rod 9 that extends into the pressure relief mechanism 8. The pressure relief rod 9 can slide in the longitudinal direction of the pressure relief mechanism 8.

[0024] When the upper die 1 and the bottom die 4 are pressed together, the insert rod 103 will extend into the insert hole 801, thereby pushing the pressure relief rod 9 out one end.

[0025] A pressing plate 10 is provided at the bottom of the stamping plate 6. Multiple connecting rods 11 are provided on the pressing plate 10. The top of the connecting rods 11 directly contacts the bottom surface of the stamping plate 6. A connecting rod 12 is provided on the pressing plate 10. A collar 13 is connected to the bottom of the connecting rod 12. A spring 14 is connected to the collar 13. The bottom end of the spring 14 contacts the upper die 1. Multiple pressing plates 10 are provided and are located in the gaps at the bottom of the stamping plate 6.

[0026] When the mold is closed, the stamping plate 6 will transmit pressure to the extrusion plate 10, thereby pressing the extrusion plate 10 downward and compressing the spring 14 to its minimum length.

[0027] The position of connecting rod 11 corresponds to the position of the slot on the bottom surface of the stamping hole 7, and the center positions of connecting rod 11 and connecting rod 2 12 coincide. The collar 13 can slide with connecting rod 2 12, and the spring 14 is equipped with damping, which can penetrate the collar 13 and extend into connecting rod 2 12.

[0028] When the stamping is completed, the pressure on the stamping plate 6 is released, and the force that was squeezed on the connecting rod 12 and collar 13 and spring 14 at the bottom of the extrusion plate 10 is also released, generating a rebound and vibration force on the stamping plate 6, effectively preventing the stamping plate 6 from sticking when demolding.

[0029] Working principle: When a stamping operation is required between the upper die 1 and the bottom die 4, the material will be conveyed from the feeding plate 5 to the stamping plate 6. As the stamping die 101 on the upper die 1 is aligned with the hydraulic rod 2 and the alignment rod 3, the die is closed and the material is punched out of the shape of multiple stamping holes 7 on the stamping plate 6.

[0030] During the stamping mold closing process, the pressure rod 102 and the insert rod 103 will be in close contact with the pressure relief mechanism 8. The insert rod 103 extends into the insertion hole 801, pushing the pressure relief rod 9 out one end of the distance.

[0031] At the same time, during the stamping process, the pressure of the stamping plate 6 will be transmitted to the extrusion plate 10 and the connecting rod 11, which will squeeze the connecting rod 12, the collar 13 and the spring 14 to the maximum extent.

[0032] After the mold closing and stamping process is completed, the extended pressure relief rod 9 is pushed inward, and the insert rod 103 is ejected. As a result, the pressure rod 102 will cause a gap to appear between the stamping die 101 and the stamping plate 6, which will facilitate demolding.

[0033] After the pressure relief rod 9 is pushed inward, the stamping die 101 and the stamping plate 6 begin to demold, and the pressure on the stamping plate 6 will be released instantly. The pressure on the connecting rod 12, the collar 13 and the spring 14 will be released instantly, generating an instantaneous rebound and oscillation force on the stamping plate 6, effectively preventing the sticking inside the stamping plate 6 after demolding.

[0034] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A ejector pin structure adapted to a stamping die, comprising an upper die (1), a bottom die (4), a feeding plate (5), and a stamping plate (6), characterized in that: The upper mold (1) and the bottom mold (4) are brought closer together for mold closing and moved away from each other for demolding via hydraulic rods (2) and alignment rods (3). The upper mold (1) is provided with a stamping die (101), which corresponds to the stamping plate (6). The stamping plate (6) is provided with a stamping hole (7), and a feeding plate (5) is also installed on the stamping plate (6). A pressure relief mechanism (8) is fixedly connected to the side of the stamping plate (6). An insertion hole (801) is provided in the pressure relief mechanism (8), which matches the insertion rod (103). The insertion rod (103) is fixedly connected to the pressure rod (102), which is located on the side of the stamping die (101).

2. The ejector pin structure adapted to a stamping die according to claim 1, characterized in that: The bottom of the stamping plate (6) is provided with an extrusion plate (10), and multiple connecting rods (11) are provided on the extrusion plate (10). The top of the connecting rods (11) is in direct contact with the bottom surface of the stamping plate (6).

3. The ejector pin structure adapted to a stamping die according to claim 2, characterized in that: The extrusion plate (10) is provided with a connecting rod two (12), and a collar (13) is connected to the bottom of the connecting rod two (12). A spring (14) is connected to the collar (13), and the bottom end of the spring (14) is in contact with the upper mold (1).

4. A demolding pin structure adapted to a stamping die according to claim 3, characterized in that: Multiple extrusion plates (10) are provided, and multiple extrusion plates (10) are provided in the gap at the bottom of the stamping plate (6).

5. A demolding pin structure adapted to a stamping die according to claim 1, characterized in that: The side of the insertion rod (103) is provided with elastic balls, and the elastic balls can contact the end of the force relief rod (9) that extends into the force relief mechanism (8), and the force relief rod (9) can slide in the longitudinal direction of the force relief mechanism (8).

6. A ejector pin structure adapted to a stamping die according to claim 2, characterized in that: The position of the first connecting rod (11) corresponds to the position of the slot on the bottom surface of the stamping hole (7), and the center positions of the first connecting rod (11) and the second connecting rod (12) coincide.

7. A ejector pin structure adapted to a stamping die according to claim 3, characterized in that: The collar (13) can be slidably connected to the connecting rod (12), and the spring (14) is provided with damping, which can penetrate the collar (13) and extend into the connecting rod (12).

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