A fixed mold ejection structure

Abstract

The application relates to the field of high-pressure die casting molds, in particular to a fixed mold ejection structure which comprises a fixed mold, a movable mold and an ejection device, the fixed mold and the movable mold form a cavity for injection molding when combined, the ejection device is connected between the fixed mold and the movable mold, the ejection device comprises a pressing assembly and an ejection rod, a containing cavity for containing the ejection rod is arranged on the fixed mold, the end face of the ejection rod towards the movable mold is connected with a push plate, the end face of the push plate towards the movable mold is connected with a ejector pin, a moving cavity for the ejector pin to slide is arranged on the inner wall of the containing cavity, the pressing assembly is connected on the movable mold and the fixed mold, and the surface of the ejection rod away from the movable mold is provided with a pressing surface. In the application, the pressing assembly and the ejection rod are arranged, the ejection rod uniformly bears force on the surface of the push plate, the push plate is not easy to be compressed and deformed, the height of the ejector pin protruding from the end of the fixed mold is controllable, the end of the ejector pin is not easy to be embedded into the surface of a product, the product meets the receiving standard, and therefore the production quality of the product is improved.

Description

Technical Field

[0001] This application relates to the field of high-pressure die-casting molds, and in particular to a fixed mold ejection structure. Background Technology

[0002] Molds are various molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, or stamping. Existing molds include a fixed mold, a moving mold, and a fixed mold ejection structure. During the opening process of the moving mold and the fixed mold, the product is held in place to ensure that the product is completely fitted with the moving mold, thereby preventing product deformation.

[0003] Conventional fixed mold ejection mechanisms use a spring structure, with the ejection mechanism relying on a reset rod for resetting. The reset rod needs to avoid the product and gating system, so the spacing is usually far. Due to the limitations of mold thickness, the thickness of the fixed mold top plate and push plate is relatively thin. When the span of the reset rod is large and the required ejection force is large, the spring will deform the top plate, causing the ejector pin to protrude and recess into the product. When the ejector pin is recessed too much into the product, the production quality of the product is reduced, resulting in the product not meeting the acceptance standards. Summary of the Invention

[0004] To improve the problem of ejector pins leaving recessed marks on products, this application provides a fixed mold ejection structure.

[0005] This application provides a fixed mold ejection structure, which adopts the following technical solution: A fixed mold ejection structure includes a fixed mold, a moving mold, and an ejection device. When the fixed mold and the moving mold are closed, they form a cavity for injection molding. The ejection device is connected between the fixed mold and the moving mold. The ejection device includes a clamping assembly and an ejector rod. The fixed mold has a receiving cavity for accommodating the ejector rod. A push plate is connected to the end face of the ejector rod facing the moving mold. An ejector pin is connected to the end face of the push plate facing the moving mold. A movable cavity for the ejector pin to slide is formed in the inner wall of the receiving cavity. The end of the ejector pin protruding from the movable cavity can abut against the end face of the workpiece in the cavity. The clamping assembly is connected to the moving mold and the fixed mold. The surface of the ejector rod away from the moving mold has a clamping surface. The clamping surface is abutted by the clamping end of the clamping assembly. When the clamping end of the clamping assembly abuts against the clamping surface, it drives the ejector rod to compress, causing the fixed mold to slide towards the moving mold. The end face of the fixed mold and the end face of the ejector pin are flush.

[0006] By adopting the above technical solution, the ejector rod is located in the receiving cavity, driving the clamping end of the clamping component to press against the clamping surface, causing the ejector rod to be compressed and its space in the receiving cavity to shrink. This drives the fixed mold to slide closer to the moving mold, and the surface of the fixed mold is flush with the end face of the ejector pin. When the product in the cavity is injection molded, the clamping end of the clamping component is driven to disengage from the clamping surface, the pressure on the ejector rod disappears, and the ejector rod rebounds due to its own elasticity, driving the fixed mold to slide away from the moving mold. The end of the ejector pin slides on the inner wall of the moving cavity and protrudes from the end face of the fixed mold. The end of the ejector pin protruding from the end face of the fixed mold abuts against the surface of the product in the cavity, so that the product is stably released from the fixed mold, making it less likely for the product to be stretched and deformed by the fixed mold during mold opening. At the same time, the ejector rod exerts uniform force on the surface of the push plate, making the push plate less likely to be deformed by pressure. This makes the height of the end of the ejector pin protruding from the fixed mold controllable, ensuring that the end of the ejector pin does not easily embed into the surface of the product, ensuring that the product meets the acceptance standards, thereby improving the production quality of the product.

[0007] Optionally, the clamping assembly includes a pull rod and a rotating block. The pull rod includes a rotating part, a clamping part, and a limiting part. One end of the rotating part is rotatably connected to the surface of the moving mold, and the other end of the rotating part is connected to the clamping part. The surface of the clamping part can abut against the clamping surface. The limiting part is connected to the surface of the rotating part facing the fixed mold. The rotating block is connected to the end face of the fixed mold facing the limiting part. The rotating block is located on the side of the limiting part away from the clamping part. When the surface of the clamping part abuts against the clamping surface, the end face of the rotating block abuts against the end face of the limiting part and drives the fixed mold to slide towards the moving mold.

[0008] By adopting the above technical solution, when the fixed mold and the moving mold are closed to form a cavity, the rotating part rotates towards the fixed mold, the end face of the clamping part abuts against the clamping surface, causing the ejector rod to be compressed and the volume of the ejector rod in the cavity to decrease. At the same time, the rotating block is located on the side of the limiting part away from the clamping part, and the surface of the rotating block abuts against the surface of the limiting part, causing the fixed mold to move towards the moving mold. The end face of the fixed mold and the end of the ejector pin are flush, thus achieving stable mold closing of the fixed mold and the moving mold.

[0009] Optionally, the rotating block has a limiting surface on its surface facing the limiting part. The inclination height of the limiting surface increases as the distance to the fixed mold decreases. The limiting surface can abut against the surface of the limiting part and guide the abutting part surface to abut against the abutting surface.

[0010] By adopting the above technical solution, when the rotating part rotates in the direction closer to the fixed mold, the limiting surface abuts against the surface of the limiting part and guides the surface of the abutting part to abut against the abutting surface to form a limit, reducing the wear of the rotating block and thus extending the service life of the rotating block.

[0011] Optionally, the surface of the limiting part facing the limiting surface is provided with a guide surface. The inclination height of the guide surface increases as the distance to the rotating part decreases. The guide surface can abut against the limiting surface and guide the surface of the pressing part to abut against the pressing surface to form a limiting.

[0012] By adopting the above technical solution, when the rotating part rotates towards the fixed mold, the limiting surface abuts against the guide surface and guides the rotating part to slide away from the clamping part along the guide surface. The limiting surface abuts against the guide surface, and the surface of the clamping part abuts against the clamping surface to form a limit, reducing the wear of the limiting part and thus extending the service life of the tie rod.

[0013] Optionally, a friction block is connected to the surface of the abutting surface facing the abutting part, and the surface of the friction block can abut against the surface of the abutting part to form a limiting position.

[0014] By adopting the above technical solution, when the rotating part rotates in the direction closer to the fixed mold, the surface of the pressing part presses against the surface of the friction block, and drives the ejector rod to be deformed under pressure. The surface of the friction block presses against the surface of the pressing part, reducing the wear between the pressing surface and the surface of the pressing part, thereby extending the service life of the ejector rod.

[0015] Optionally, a reset rod is connected to the surface of the push plate facing the fixed mold. The surface of the fixed mold has a reset cavity for the reset rod to slide. The sliding direction of the reset rod is parallel to the sliding direction of the ejector pin. The end of the reset rod protruding from the fixed mold can abut against the surface of the moving mold and guide the fixed mold and the moving mold to close and form a cavity.

[0016] By adopting the above technical solution, the end of the reset rod protruding from the fixed mold can abut against the surface of the moving mold and guide the fixed mold and the moving mold to close and form a cavity. At the same time, the end of the ejector pin is flush with the end face of the fixed mold, so that the fixed mold is not easy to deviate on the moving mold, and the fixed mold and the moving mold can be stably closed.

[0017] Optionally, the clamping component further includes a positioning block connected to the surface of the moving mold. When the surface of the positioning block protruding from the moving mold abuts against the surface of the rotating part, the surface of the clamping part abuts against the clamping surface to form a limit.

[0018] By adopting the above technical solution, when the rotating part rotates towards the fixed mold, the surface of the pressing part presses against the pressing surface to form a limit, and the positioning block protrudes from the surface of the moving mold and presses against the surface of the rotating part to form a positioning, so that the operator does not need to continue to drive the rotating part to rotate, so that the rotating part is not easily subjected to excessive pressure and breakage, thereby ensuring the stability of the rotating part operation.

[0019] Optionally, the clamping assembly includes a reset elastic element, one end of which is connected to the surface of the moving mold in the direction of elastic force, and the other end of which is connected to the outer wall of the rotating part in the direction of elastic force. The reset elastic element has the tendency to drive the rotating part to rotate toward the fixed mold in the direction of elastic force.

[0020] By adopting the above technical solution, one end of the reset elastic element in the direction of elastic force is connected to the surface of the moving mold, and the other end of the reset elastic element in the direction of elastic force is connected to the outer wall of the rotating part. The elastic force of the reset elastic element drives the rotating part to rotate in the direction closer to the fixed mold. The surface of the pressing part presses against the surface of the friction block to form a limit, thereby realizing the directional rotation of the rotating part, reducing the workload of the workers, and thus improving the production efficiency of the workpiece.

[0021] Optionally, the clamping assembly further includes a support block connected to the surface of the fixed mold facing the ejector rod, and the end face of the support block can abut against the surface of the ejector rod to form support.

[0022] By adopting the above technical solution, the support block is connected to the surface of the fixed mold. The surface of the support block can press against the surface of the ejector rod to form support. When the ejector rod is compressed, the surface of the support block presses against the surface of the ejector rod and drives the fixed mold to rotate towards the moving mold, so as to achieve stable mold closing of the fixed mold and the moving mold.

[0023] Optionally, the rotating block has a conductive surface on its surface away from the guide surface. The inclination height of the conductive surface increases as the distance to the fixed mold decreases. The limiting part has a rotating surface on its surface away from the guide surface. The rotating surface can abut against the conductive surface and guide the rotating part to rotate in a direction away from the fixed mold.

[0024] By adopting the above technical solution, the rotating part is driven to rotate away from the fixed mold, the guide surface abuts against the guide surface, and the rotating block is driven to slide towards the clamping part. The transmission surface abuts against the rotating surface and guides the rotating part to rotate away from the fixed mold, so that the clamping force between the surface of the clamping part and the surface of the friction block disappears, realizing the automatic reset of the ejector rod, reducing the wear between the rotating block and the tie rod, thereby extending the service life of the tie rod.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The setting of the clamping component and ejector rod ensures that the ejector rod exerts force evenly on the surface of the push plate, making the push plate less prone to deformation under pressure. This allows for controllable height of the ejector pin protruding from the fixed mold end, ensuring that the ejector pin end does not easily embed into the product surface, thus ensuring that the product meets acceptance standards and improving the production quality of the product. 2. The setting of the tie rod and the rotating block, the surface of the rotating block abuts against the surface of the limiting part, driving the fixed mold to move towards the moving mold, the end face of the fixed mold and the end of the ejector pin are flush, so as to realize the stable mold closing of the fixed mold and the moving mold; 3. The setting of the limiting surface: the surface of the guide and pressing part is pressed against the pressing surface to form a limit, which reduces the wear of the rotating block and thus extends the service life of the rotating block. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 2 This is a cross-sectional view of an embodiment of this application, mainly showing the closing of the fixed mold and the moving mold.

[0028] Figure 3 This is a cross-sectional view of an embodiment of this application, mainly showing the ejection state of the fixed mold.

[0029] Figure 4 This is a cross-sectional view of an embodiment of this application, mainly showing the demolding states of the fixed mold and the moving mold.

[0030] Explanation of reference numerals in the attached drawings: 1. Fixed mold; 11. Cavity; 12. Fixed mold frame; 121. Mounting groove; 122. Receiving cavity; 123. Moving cavity; 124. Reset cavity; 13. Fixed mold core; 2. Moving mold; 21. Moving mold frame; 211. Mounting cavity; 22. Moving mold core; 3. Ejector device; 31. Clamping assembly; 311. Tie rod; 3111. Rotating part; 3112. Clamping part; 3113. Limiting part; 3114. Guide surface; 3115. Rotating surface; 312. Rotating block; 3121. Limiting surface; 3122. Conducting surface; 313. Positioning block; 314. Reset elastic element; 315. Support block; 32. Ejector rod; 321. Clamping surface; 4. Push plate; 5. Top plate; 51. Sliding cavity; 52. Connecting cavity; 6. Ejector pin; 7. Reset rod; 8. Friction block. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0032] This application discloses a fixed mold ejection structure. (Refer to...) Figure 1 and Figure 2 A fixed mold ejection structure includes a fixed mold 1, a moving mold 2 and an ejection device 3. When the fixed mold 1 and the moving mold 2 are closed, they form a cavity 11 for injection molding. The ejection device 3 is connected to the fixed mold 1 and the moving mold 2. The ejection device 3 can drive the fixed mold 1 to be ejected from the moving mold 2, thereby realizing the automatic unloading of the product in the cavity 11.

[0033] Reference Figure 2 The moving mold 2 includes a moving mold frame 21 and a moving mold core 22. The bottom of the moving mold frame 21 abuts against the ground to form a support. The top surface of the moving mold frame 21 has a mounting cavity 211 for the moving mold core 22 to be inserted. The fixed mold 1 includes a fixed mold frame 12 and a fixed mold core 13. The surface of the fixed mold frame 12 facing the moving mold 2 has a mounting groove 121 for the fixed mold core 13 to be inserted. When the fixed mold 1 and the moving mold 2 are closed, the cavity 11 is located between the fixed mold core 13 and the moving mold core 22.

[0034] Reference Figure 2The ejector device 3 includes a clamping assembly 31 and an ejector rod 32. The ejector rod 32 can be made of rubber or elastic steel. In this embodiment, the ejector rod 32 is made of elastic steel and has a certain deformation capacity. A receiving cavity 122 for accommodating the ejector rod 32 is formed on the surface of the fixed mold frame 12 away from the fixed mold core 13. The clamping assembly 31 is connected between the fixed mold frame 12 and the moving mold frame 21. The clamping assembly 31 can drive the ejector rod 32 to deform under pressure within the receiving cavity 122. A push plate 4 is fixed to the surface of the ejector rod 32 facing the fixed mold core 13. A top plate 5 is fixed to the surface of the push plate 4 facing the fixed mold core 13. An ejector pin 6 is fixed to the surface of the push plate 4 facing the fixed mold core 13. A supply pin 6 is formed on the surface of the top plate 5. The ejector pin 6 passes through the sliding cavity 51. The sliding direction of the ejector pin 6 is parallel to the sliding direction of the fixed mold 1. The inner wall of the receiving cavity 122 is provided with a moving cavity 123 for the ejector pin 6 to slide. The moving cavity 123 is connected to the sliding cavity 51. The moving cavity 123 penetrates the fixed mold core 13 along its own depth and is connected to the cavity 11. The end of the ejector pin 6 passes through the sliding cavity 51 and the moving cavity 123 in sequence and faces the cavity 11. The end of the ejector pin 6 protruding from the fixed mold core 13 can abut against the surface of the workpiece in the cavity 11.

[0035] Reference Figure 2 A reset rod 7 is fixed on the surface of the push plate 4 facing the fixed mold 1. The axis of the reset rod 7 is parallel to the axis of the ejector pin 6. A communicating cavity 52 is opened on the surface of the top plate 5 for the reset rod 7 to pass through. A reset cavity 124 is opened on the inner wall of the receiving cavity 122 for the reset rod 7 to slide. The reset cavity 124 penetrates the outer wall of the fixed mold core 13 along its own depth direction and faces the surface of the moving mold core 22. The end of the reset rod 7 protruding from the fixed mold core 13 can abut against the surface of the moving mold core 22.

[0036] Reference Figure 2The ejector rod 32 has a pressing surface 321 on its end face away from the push plate 4, and the pressing surface 321 is used for the pressing end of the pressing assembly 31 to press against. The pressing assembly 31 includes a pull rod 311, a rotating block 312, a positioning block 313, a reset elastic element 314, and a support block 315. The number of pull rods 311 can be one, two, or more. In this embodiment, the number of pull rods 311 is more than one. The multiple pull rods 311 are divided into two groups, and the two groups of pull rods 311 are rotatably connected to both sides of the moving mold frame 21 in the length direction. Multiple pull rods 311 in the same group are rotatably connected to the outer wall of the moving mold frame 21 at intervals. The pull rod 311 includes a rotating part 3111, a pressing part 3112, and a limiting part 3113. One end of the rotating part 3111 is rotatably connected to the outer wall of the moving mold frame 21, and the other end of the rotating part 3111 is fixed to the outer wall of the moving mold frame 21. On the clamping part 3112, the limiting part 3113 is connected to the surface of the rotating part 3111 facing the fixed mold 1. The surface of the clamping part 3112 facing the limiting part 3113 can press against the clamping surface 321 and drive the ejector rod 32 to be deformed under pressure. Friction blocks 8 are fixed on the surface of the clamping surface 321 facing the clamping part 3112. The material of the friction blocks 8 can be rubber or silicone. In this embodiment, the material of the friction blocks 8 is rubber, which has a certain deformation ability. The surface of the friction blocks 8 away from the clamping surface 321 can press against the surface of the clamping part 3112, reducing the wear between the clamping part 3112 and the ejector rod 32, thereby extending the service life of the fixed mold ejection structure.

[0037] Reference Figure 2 and Figure 3 When the rotating part 3111 rotates towards the fixed mold 1, it causes the surface of the pressing part 3112 to press against the surface of the friction block 8, causing the ejector rod 32 to deform under pressure. The volume of the ejector rod 32 in the receiving cavity 122 decreases, causing the fixed mold 1 to move towards the moving mold 2. The end face of the ejector pin 6 is flush with the surface of the fixed mold core 13, and the fixed mold core 13 and the moving mold core 22 close to form the cavity 11. When the rubber material cools in the cavity 11 to form a product, it drives the rotating part 3111 to rotate away from the fixed mold 1, and the pressing effect of the surface of the pressing part 3112 against the surface of the friction block 8 disappears. After the pressure on the ejector rod 32 is removed, it elastically rebounds, driving the fixed mold 1 to slide away from the moving mold 2. The end of the ejector pin 6 protrudes from the end of the fixed mold core 13 and abuts against the product in the cavity 11, making it less likely for the product to be stretched and deformed by the fixed mold core 13 when the mold is opened, thereby achieving stable ejection of the product from the fixed mold core 13. At the same time, the ejector rod 32 exerts uniform force on the surface of the push plate 4, making the push plate 4 less prone to deformation under pressure. This allows for controllable height of the end of the ejector pin 6 protruding from the fixed mold core 13, ensuring that the end of the ejector pin 6 does not easily embed into the product surface, ensuring that the product meets the acceptance standards, thereby improving the production quality of the product.

[0038] Reference Figure 4The rotating block 312 is fixed on the outer wall of the fixed mold frame 12 facing the limiting part 3113. The surface of the rotating block 312 facing the ejector rod 32 is provided with a limiting surface 3121. The inclination height of the limiting surface 3121 increases as the distance to the fixed mold 1 decreases. The surface of the limiting part 3113 away from the ejector rod 32 is provided with a guide surface 3114. The inclination height of the guide surface 3114 increases as the distance to the rotating part 3111 decreases. The guide surface 3114 can abut against the limiting surface 3121, guiding the rotating block 312 to slide away from the ejector rod 32. The rotating block 312 is located on the side of the limiting part 3113 away from the pressing part 3112. The surface of the pressing part 3112 abuts against the surface of the friction block 8, reducing the wear between the rotating block 312 and the limiting part 3113, thereby ensuring the stability of the ejector rod 32 under pressure deformation.

[0039] Reference Figure 4 The rotating block 312 has a conductive surface 3122 on its surface away from the limiting surface 3121. The inclination height of the conductive surface 3122 increases as the distance to the fixed mold 1 decreases. The limiting part 3113 has a rotating surface 3115 on its surface away from the guiding surface 3114. The rotating surface 3115 can abut against the conductive surface 3122 and guide the rotating part 3111 to rotate away from the fixed mold 1, causing the surface of the pressing part 3112 to detach from the surface of the friction block 8. The rotating block 312 is located on the side of the limiting part 3113 close to the pressing part 3112, further reducing the wear between the limiting part 3113 and the rotating block 312, thereby ensuring the stability of the pressing assembly 31 in operation.

[0040] Reference Figure 4 The reset elastic element 314 can be a compression spring or a tension spring. In this embodiment, the reset elastic element 314 is a compression spring, which has a certain deformation capability. One end of the reset elastic element 314 in the elastic direction is fixed to the outer wall of the moving mold frame 21, and the other end of the reset elastic element 314 in the elastic direction is fixed to the surface of the rotating part 3111 away from the pressing part 3112. The reset elastic element 314 has the elastic force to drive the rotating part 3111 to rotate in the direction closer to the fixed mold frame 12, and the surface of the pressing part 3112 abuts against the outer wall of the friction block 8.

[0041] Reference Figure 4 The positioning block 313 is fixed on the surface of the moving mold frame 21 facing the rotating part 3111. When the surface of the pressing part 3112 presses against the surface of the friction block 8, the positioning block 313 protrudes from the surface of the moving mold frame 21 and presses against the surface of the rotating part 3111 to form a positioning, so that the operator can directly observe the contact between the pressing part 3112 and the friction block 8, so that the rotating part 3111 is not easily damaged by excessive pressure, thereby improving the stability of the pressing component 31 in operation.

[0042] Reference Figure 4The number of support blocks 315 can be one, two or more. In this embodiment, the number of support blocks 315 is multiple. Multiple support blocks 315 are fixed at intervals on the surface of the fixed mold frame 12 facing the abutment surface 321. The end face of the support block 315 facing the abutment surface 321 can abut against the abutment surface 321 to provide support.

[0043] The implementation principle of the fixed mold ejection structure in this application embodiment is as follows: The rotating part 3111 rotates towards the fixed mold 1, causing the surface of the pressing part 3112 to press against the surface of the friction block 8, driving the ejector rod 32 to deform under pressure. The volume of the ejector rod 32 in the receiving cavity 122 decreases, causing the fixed mold 1 to move towards the moving mold 2. The end face of the ejector pin 6 is flush with the surface of the fixed mold core 13. The fixed mold core 13 and the moving mold core 22 close to form the cavity 11. When the rubber material cools in the cavity 11 to form a product, the rotating part 3111 is driven to rotate away from the fixed mold 1, and the surface of the pressing part 3112 presses against the surface of the friction block 8. When the pressing effect of the surface disappears, the pressure on the ejector rod 32 disappears and it elastically rebounds, driving the fixed mold 1 to slide away from the moving mold 2. The end of the ejector pin 6 protrudes from the end of the fixed mold core 13 and abuts against the product in the cavity 11, so that the product is not easily stretched and deformed by the fixed mold core 13 when the mold is opened, thereby realizing the stable ejection of the product from the fixed mold core 13. At the same time, the ejector rod 32 exerts uniform force on the surface of the push plate 4, and the push plate 4 is not easily deformed by pressure. This allows for controllable height of the end of the ejector pin 6 protruding from the fixed mold core 13, ensuring that the end of the ejector pin 6 is not easily embedded in the product surface, ensuring that the product meets the acceptance standards, thereby improving the production quality of the product.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fixed mold ejection structure, characterized in that: The system includes a fixed mold (1), a moving mold (2), and an ejector device (3). When the fixed mold (1) and the moving mold (2) are closed, they form a cavity (11) for injection molding. The ejector device (3) is connected between the fixed mold (1) and the moving mold (2). The ejector device (3) includes a clamping assembly (31) and an ejector rod (32). The fixed mold (1) has a receiving cavity (122) for accommodating the ejector rod (32). The end face of the ejector rod (32) facing the moving mold (2) is connected to a push plate (4). The end face of the push plate (4) facing the moving mold (2) is connected to an ejector pin (6). The inner wall of the receiving cavity (122) has a sliding surface for the ejector pin (6). The moving cavity (123) is a movable cavity, and the end of the ejector pin (6) protruding from the moving cavity (123) can abut against the end face of the workpiece in the cavity (11). The clamping assembly (31) is connected to the moving mold (2) and the fixed mold (1). The ejector rod (32) has a clamping surface (321) on its surface away from the moving mold (2). The clamping surface (321) is abutted by the clamping end of the clamping assembly (31). When the clamping end of the clamping assembly (31) abuts against the clamping surface (321), it drives the ejector rod (32) to compress, causing the fixed mold (1) to slide towards the moving mold (2). The end face of the fixed mold (1) and the end face of the ejector pin (6) are flush.

2. The fixed mold ejection structure according to claim 1, characterized in that: The clamping assembly (31) includes a pull rod (311) and a rotating block (312). The pull rod (311) includes a rotating part (3111), a clamping part (3112), and a limiting part (3113). One end of the rotating part (3111) is rotatably connected to the surface of the moving mold (2), and the other end of the rotating part (3111) is connected to the clamping part (3112). The surface of the clamping part (3112) can abut against the clamping surface (321). The limiting part (3113) is connected to the clamping surface (321). The rotating part (3111) faces the surface of the fixed mold (1), and the rotating block (312) is connected to the end face of the fixed mold (1) facing the limiting part (3113). The rotating block (312) is located on the side of the limiting part (3113) away from the pressing part (3112). When the surface of the pressing part (3112) presses against the pressing surface (321), the end face of the rotating block (312) presses against the end face of the limiting part (3113) and drives the fixed mold (1) to slide towards the moving mold (2).

3. The fixed mold ejection structure according to claim 2, characterized in that: The rotating block (312) has a limiting surface (3121) on its surface facing the limiting part (3113). The inclination height of the limiting surface (3121) increases as the distance to the fixed mold (1) decreases. The limiting surface (3121) can abut against the surface of the limiting part (3113) and guide the surface of the abutting part (3112) to abut against the abutting surface (321).

4. The fixed mold ejection structure according to claim 3, characterized in that: The limiting part (3113) has a guide surface (3114) on its surface facing the limiting surface (3121). The inclination height of the guide surface (3114) increases as the distance to the rotating part (3111) decreases. The guide surface (3114) can abut against the limiting surface (3121) and guide the surface of the pressing part (3112) to press against the pressing surface (321) to form a limit.

5. The fixed mold ejection structure according to claim 4, characterized in that: The surface of the abutting surface (321) facing the abutting part (3112) is connected to a friction block (8), and the surface of the friction block (8) can abut against the surface of the abutting part (3112) to form a limit.

6. The fixed mold ejection structure according to claim 1, characterized in that: The push plate (4) is connected to a reset rod (7) on the surface facing the fixed mold (1). The fixed mold (1) has a reset cavity (124) for the reset rod (7) to slide on its surface. The sliding direction of the reset rod (7) is parallel to the sliding direction of the ejector pin (6). The end of the reset rod (7) protruding from the fixed mold (1) can abut against the surface of the moving mold (2) and guide the fixed mold (1) and the moving mold (2) to close and form a cavity (11).

7. The fixed mold ejection structure according to claim 2, characterized in that: The clamping component (31) also includes a positioning block (313), which is connected to the surface of the moving mold (2). When the surface of the positioning block (313) protruding from the moving mold (2) abuts against the surface of the rotating part (3111), the surface of the clamping part (3112) abuts against the clamping surface (321) to form a limit.

8. The fixed mold ejection structure according to claim 2, characterized in that: The clamping assembly (31) includes a reset elastic element (314), one end of which is connected to the surface of the moving mold (2) in the elastic direction, and the other end of which is connected to the outer wall of the rotating part (3111). The reset elastic element (314) has a tendency to drive the rotating part (3111) to rotate toward the fixed mold (1) with elastic force.

9. A fixed mold ejection structure according to claim 2, characterized in that: The clamping assembly (31) also includes a support block (315), which is connected to the surface of the fixed mold (1) facing the ejector rod (32). The end face of the support block (315) can press against the surface of the ejector rod (32) to form support.

10. A fixed mold ejection structure according to claim 5, characterized in that: The rotating block (312) has a conductive surface (3122) on its surface away from the guide surface. The inclination height of the conductive surface (3122) increases as the distance to the fixed mold (1) decreases. The limiting part (3113) has a rotating surface (3115) on its surface away from the guide surface (3114). The rotating surface (3115) can abut against the conductive surface (3122) and guide the rotating part (3111) to rotate away from the fixed mold (1).

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