Anti-deformation injection mold for thin-wall shell

Abstract

The application relates to the field of injection molds, in particular to a thin-wall shell anti-deformation injection mold, which comprises a movable mold and a static mold, the top end of the movable mold is provided with a mold cavity, and the bottom end of the static mold is fixedly connected with a mold core; a plurality of ejector pins are symmetrically and slidably connected to the inner wall of the movable mold, and a first spring is fixedly connected between the bottom end of the ejector pin and the movable mold. The air in the air cylinder is discharged into the ejector pin through the air pipe and then discharged into the mold cavity through the trapezoidal groove, air cooling is carried out on the bottom end of the plastic part, the corresponding position is rapidly cooled and formed, the strength of the corresponding position of the plastic part is improved, deformation of the plastic part after the ejector pin contacts the plastic part is avoided, the air pressure in the mold cavity is increased, the negative pressure between the plastic part and the inner wall of the mold cavity is released, the plastic part is separated from the inner wall of the mold cavity, and the friction between the plastic part and the inner wall of the mold cavity when the ejector pin pushes the plastic part is reduced.

Description

Technical Field

[0001] This invention relates to the field of injection molds, and more particularly to a thin-walled shell anti-deformation injection mold. Background Technology

[0002] Injection molding is a highly efficient plastic processing technology. This process involves injecting molten plastic into the cavity of a mold, where it cools and solidifies to form the desired product. The injection molding process mainly includes stages such as filling, holding pressure, cooling, and demolding. The filling stage refers to the process where molten plastic is injected into the mold cavity through a nozzle under the high pressure of the injection molding machine. The holding pressure stage continues to apply pressure after filling to compensate for plastic shrinkage and ensure the dimensional stability of the product. The cooling stage is the process of the plastic cooling and solidifying in the mold, while the demolding stage is the removal of the cooled and solidified product from the mold.

[0003] For example, the invention patent with application number CN202411572594.3 discloses a thin-walled shell forming mold, including a first mold body and a second mold body; the first mold body includes a first forming surface; the second mold body includes a second forming surface, and the second forming surface and the first forming surface form a forming cavity for forming a shell.

[0004] The above cases still have the following shortcomings: For example, during the injection molding of thin-walled shells, uneven cooling in some areas of the newly injection-molded plastic part can lead to insufficient rigidity in certain areas. Furthermore, due to the small contact area between the ejector pin and the plastic part and the high local pressure, when ejecting from the weakest part of the thin-walled shell, indentation and deformation can easily occur at the contact point of the ejector pin, resulting in product scrap.

[0005] To address these issues, this invention proposes a thin-walled shell anti-deformation injection mold. Summary of the Invention

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a thin-walled shell anti-deformation injection mold, comprising a moving mold and a stationary mold, wherein a mold cavity is opened at the top of the moving mold and a mold core is fixedly connected to the bottom of the stationary mold; Several ejector pins are symmetrically and slidably connected to the inner wall of the moving mold. A first spring is fixedly connected between the bottom end of the ejector pin and the moving mold. The ejector pin has a hollow structure and a trapezoidal groove is opened at the top end of the ejector pin. A trapezoidal slider is slidably connected to a trapezoidal groove. A connecting frame is fixedly connected to the bottom end of the trapezoidal slider. The connecting frame slides in a sealed manner with the bottom end of the ejector pin and is fixedly connected to the bottom end of the moving mold with a second spring. A pushing mechanism that pushes the trapezoidal slider downwards during the separation of the stationary mold and the moving mold to open the trapezoidal groove; An air cylinder, wherein an air tube is fixedly connected to the top side wall of the air cylinder, the air tube is fixedly connected to a pin, a piston is slidably connected inside the air cylinder, a connecting rod is fixedly connected to the bottom end of the piston, and a push plate is fixedly connected to the bottom end of the connecting rod. A cylinder is fixedly connected inside the moving mold, and the bottom end of the cylinder's telescopic rod is fixedly connected to the push plate.

[0007] Preferred options also include: The L-shaped mounting bracket has its bottom end fixedly connected to the side wall of the ejector pin at the corresponding position, and its top end penetrates the top end of the moving mold and is slidably connected to the moving mold. A flip frame is rotatably connected to the top of an L-shaped mounting bracket. A clamping assembly is provided at the end of the flip frame, which clamps the top of the plastic part as the ejector pin moves upward. Two flipping blocks are fixed coaxially to both sides of the flipping frame, and a torsion spring is fixedly connected between the flipping blocks and the L-shaped mounting frame. A storage slot is provided at the bottom of the stationary mold, corresponding to the position of the L-shaped mounting bracket. A push rod is fixedly connected to the storage slot at the position of one of the flipping blocks. A first sliding groove is fixedly connected to the top of the moving mold at the position of the push rod.

[0008] Preferably, the clamping assembly includes: Two clamping plates are symmetrically and slidably connected to the flipping frame; Two first gears are symmetrically rotatably connected to the tilting frame. The bottom and top ends of the two first gears respectively mesh with two first racks. The two first racks are respectively fixedly connected to the clamping plates at corresponding positions. A pushing component for pushing one of the clamping plates to move.

[0009] Preferably, the actuating component includes: An isosceles trapezoidal push block is fixedly connected to one of the clamping plates, and a third spring is fixedly connected between the clamping plate and the flipping frame; A support bracket is fixedly connected to the top of the moving mold, and a push roller is fixedly connected to the top of the support bracket above the isosceles trapezoidal push block.

[0010] Preferably, it also includes an L-shaped pusher frame, the bottom end of which is fixedly connected to the top of the moving mold at the position corresponding to the flipping block, and the top of the L-shaped pusher frame is located above the flipping block.

[0011] Preferably, the actuating mechanism includes: The second rack is fixedly connected to the bottom end of the connecting frame; The second gear is rotatably connected inside the moving mold. The second gear meshes with the second rack. The side wall of the second gear meshes with the third rack. The top end of the third rack is fixedly connected to the bottom end of the stationary mold. The second slide groove is located at the top of the moving mold, corresponding to the position of the third rack.

[0012] Preferably, rubber pads are fixed to the side walls of both clamping plates.

[0013] Preferably, a feed pipe is fixedly connected to the top of the stationary mold.

[0014] Compared with the prior art, the present invention has the following beneficial effects: I. This invention, by setting up an ejector pin, an air cylinder, and a piston, compresses the air in the air cylinder through the piston, causing the air to be discharged into the ejector pin through an air pipe, and then discharged through a trapezoidal groove. The discharge of gas through the trapezoidal groove serves two purposes: firstly, it provides air cooling to the bottom of the plastic part, allowing the corresponding position to cool and solidify rapidly, improving the strength of the corresponding position of the plastic part and preventing deformation after the ejector pin contacts the plastic part; secondly, the gas discharged through the trapezoidal groove enters the mold cavity, increasing the air pressure in the mold cavity, which helps to release the negative pressure between the plastic part and the inner wall of the mold cavity, allowing the plastic part to separate from the inner wall of the mold cavity. This helps to reduce the friction between the plastic part and the inner wall of the mold cavity when the ejector pin pushes the plastic part later, thereby reducing damage to the plastic part.

[0015] Second, by setting a second rack and a second gear, during the mold closing process, the third rack inserts into the second slide groove and enters the moving mold, and then meshes with the second gear. The second gear rotates, thereby driving the second rack to move upward, the connecting frame to move upward and push the trapezoidal slider to move downward, sealing the trapezoidal groove and preventing the melt from leaking.

[0016] Third, this invention, by setting the ejector pin to blow air during the process, causes the plastic part to move upward by the gas and enter the clamping assembly. Subsequently, the ejector pin moves upward, and during the upward movement of the ejector pin, the clamping assembly clamps the top of the plastic part and then pulls the top of the plastic part upward together with the ejector pin, providing additional support and preventing the plastic part from shifting or bending during ejection. With the cooperation of pushing and pulling, the plastic part is ensured to be stably demolded.

[0017] Fourth, by setting an L-shaped pusher frame, after the bottom end of the isosceles trapezoidal pusher block 27 moves above the pusher roller, the ejector pin continues to move up and down, causing the L-shaped mounting frame to move upward, so that the flipping block contacts the L-shaped pusher frame. Under the squeezing action of the L-shaped pusher frame, the flipping frame flips, so that the clamping plate moves away from the plastic part, making room for unloading, and making it easy to remove the plastic part from the moving mold by suction cup or robot. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram showing the connection between the moving mold and the flipping frame of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram showing the connection between the stationary mold and the push rod in this invention; Figure 5 This is a cross-sectional view of the moving mold in this invention; Figure 6 This is a schematic diagram showing the connection between the ejector pin and the L-shaped mounting bracket in this invention; Figure 7 This is a schematic diagram showing the connection between the ejector pin and the air cylinder in this invention; Figure 8 This is a cross-sectional view of the ejector pin in this invention; Figure 9 This is a schematic diagram showing the connection between the flipping frame and the clamping plate in this invention.

[0019] In the diagram: Moving mold 1, mold cavity 101, first slide groove 102, second slide groove 103, stationary mold 2, mold core 201, feed pipe 202, storage groove 203, ejector pin 3, first spring 4, trapezoidal groove 5, trapezoidal slider 6, connecting frame 7, second rack 8, second gear 9, third rack 10, second spring 11, air cylinder 12, air pipe 13, piston 14, connecting rod 15, push plate 16, cylinder 17, L-shaped mounting bracket 18, flipping bracket 19, flipping block 20, torsion spring 21, push rod 22, clamping plate 23, rubber pad 2301, third spring 24, first gear 25, first rack 26, isosceles trapezoidal push block 27, bracket 28, push roller 29, L-shaped push frame 30. Detailed Implementation

[0020] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0021] like Figures 1 to 9 The thin-walled shell anti-deformation injection mold shown includes a moving mold 1 and a stationary mold 2. The top of the moving mold 1 is provided with a mold cavity 101, and the bottom of the stationary mold 2 is fixedly connected with a mold core 201. Several ejector pins 3 are symmetrically and slidably connected to the inner wall of the moving mold 1. A first spring 4 is fixedly connected between the bottom end of the ejector pin 3 and the moving mold 1. The ejector pin 3 has a hollow structure and a trapezoidal groove 5 is opened at the top end of the ejector pin 3. Trapezoidal slider 6 is slidably connected to trapezoidal groove 5. A connecting frame 7 is fixedly connected to the bottom end of trapezoidal slider 6. The connecting frame 7 is sealed and slides with the bottom end of ejector pin 3, and a second spring 11 is fixedly connected between it and the bottom end of moving mold 1. The pushing mechanism pushes the trapezoidal slider 6 downward during the separation of the stationary mold 2 and the moving mold 1 to open the trapezoidal groove 5; Air cylinder 12, air pipe 13 is fixedly connected to the top side wall of air cylinder 12, air pipe 13 is fixedly connected to the ejector pin 3, piston 14 is sealed and slidably connected inside air cylinder 12, connecting rod 15 is fixedly connected to the bottom end of piston 14, and push plate 16 is fixedly connected to the bottom end of connecting rod 15. Cylinder 17 is fixedly connected inside the moving mold 1, and the bottom end of the telescopic rod of cylinder 17 is fixedly connected to the push plate 16. Specifically, in the existing technology, during the injection molding of thin-walled shells, uneven cooling in some areas of the newly molded part results in insufficient rigidity in certain areas. Furthermore, due to the small contact area between the ejector pin 3 and the part, the local pressure is high, which easily leads to indentation and deformation at the contact point of the ejector pin 3 when ejecting from the weakest part of the thin-walled shell, causing product scrap. This technical solution can solve the above problems, and the specific operation is as follows: After injection molding is completed, the stationary mold 2 is removed from the moving mold 1. During the process of removing the stationary mold 2 from the moving mold 1, the trapezoidal slider 6 is driven to move downward by the pushing mechanism, thereby opening the trapezoidal groove 5. Then, cylinder 17 is activated, causing the telescopic rod of cylinder 17 to move upward, thereby driving the push plate 16 to move upward. The connecting rod 15 drives the piston 14 to move upward. At this time, under the tension of the first spring 4, the ejector pin 3 cannot move upward, causing the piston 14 to move upward, compressing the air in the air cylinder 12. The air in the air cylinder 12 is then discharged into the ejector pin 3 through the air pipe 13, and then discharged through the trapezoidal groove 5. The discharge of gas through the trapezoidal groove 5 serves two purposes: firstly, it provides air cooling to the bottom of the plastic part, allowing the corresponding position to cool and solidify quickly, improving the strength of the corresponding position of the plastic part, and preventing deformation after the ejector pin 3 contacts the plastic part; secondly, the gas discharged through the trapezoidal groove 5 enters the mold cavity 101, increasing the air pressure in the mold cavity 101, which helps to release the negative pressure between the plastic part and the inner wall of the mold cavity 101, allowing the plastic part to separate from the inner wall of the mold cavity 101. This helps to reduce the friction between the plastic part and the inner wall of the mold cavity 101 when the ejector pin 3 pushes the plastic part later, thereby reducing damage to the plastic part. After the piston 14 moves to the top of the air cylinder 12, the piston 14 pushes the air cylinder 12, causing the ejector pin 3 to move upward. The first spring 4 is stretched, thereby pushing the plastic part upward to achieve demolding. After demolding, the telescopic rod of cylinder 17 moves downward, causing ejector pin 3 to move downward first, and then, under the action of the first spring 4, piston 14 moves downward, thereby refilling air into cylinder 12.

[0022] As a further embodiment of the present invention, the driving mechanism includes: The second rack 8 is fixedly connected to the bottom end of the connecting frame 7; The second gear 9 is rotatably connected inside the moving mold 1. The second gear 9 meshes with the second rack 8. The side wall of the second gear 9 is meshed with the third rack 10. The top end of the third rack 10 is fixedly connected to the bottom end of the stationary mold 2. The second slide groove 103 is opened at the top of the moving mold 1, corresponding to the position of the third rack 10. Specifically, by setting the second rack 8 and the second gear 9, during the mold closing process, the third rack 10 is inserted into the second slide groove 103 and enters the moving mold 1, and then meshes with the second gear 9. The second gear 9 rotates, thereby driving the second rack 8 to move upward, the connecting frame 7 to move upward and push the trapezoidal slider 6 to move downward, sealing the trapezoidal groove 5 and preventing the melt from leaking.

[0023] During implementation, a feed pipe 202 is fixedly connected to the top of the stationary mold 2, and the required melt is added to the mold cavity 101 through the feed pipe 202.

[0024] As a further embodiment of the present invention, it also includes: L-shaped mounting bracket 18, the bottom end of L-shaped mounting bracket 18 is fixedly connected to the side wall of ejector pin 3 at the corresponding position, and the top end of L-shaped mounting bracket 18 passes through the top end of moving mold 1 and is slidably connected to moving mold 1. The flip frame 19 is rotatably connected to the top of the L-shaped mounting bracket 18. The end of the flip frame 19 is provided with a clamping component, which clamps the top of the plastic part as the ejector pin 3 moves upward. Two flipping blocks 20 are coaxially fixed to both sides of the flipping frame 19, and a torsion spring 21 is fixedly connected between the flipping blocks 20 and the L-shaped mounting bracket 18. The storage slot 203 is located at the bottom of the stationary mold 2, corresponding to the position of the L-shaped mounting bracket 18. A push rod 22 is fixedly connected inside the storage slot 203, corresponding to the position of one of the flipping blocks 20. A first sliding groove 102 is fixedly connected at the top of the moving mold 1, corresponding to the position of the push rod 22. Specifically, during the blowing process of ejector pin 3, the plastic part will move upward by the force of the gas and enter the clamping assembly. Then ejector pin 3 moves upward. During the upward movement of ejector pin 3, the clamping assembly clamps the top of the plastic part and then pulls the top of the plastic part upward together with ejector pin 3 to provide additional support and prevent the plastic part from shifting or bending during ejection. With the cooperation of pushing and pulling, the plastic part is stably demolded.

[0025] Simultaneously, a flipping block 20 and a push rod 22 are set. During the mold closing process, the push rod 22 moves downward and pushes the flipping block 20 at the corresponding position, causing the flipping block 20 to rotate. This causes the flipping frame 19 to rotate upward, thereby driving the clamping assembly away from the mold cavity 101 and then into the receiving cavity, which helps to avoid interference during the injection molding process.

[0026] As a further embodiment of the present invention, the clamping component includes: Two clamping plates 23 are symmetrically and slidably connected to the flipping frame 19; Two first gears 25 are symmetrically rotatably connected to the tilting frame 19. The bottom and top ends of the two first gears 25 respectively mesh with two first racks 26. The two first racks 26 are respectively fixedly connected to the clamping plates 23 at corresponding positions. A pusher component is used to move one of the clamping plates 23. The driving components include: An isosceles trapezoidal push block 27 is fixedly connected to one of the clamping plates 23, and a third spring 24 is fixedly connected between the clamping plate 23 and the flipping frame 19. The bracket 28 is fixedly connected to the top of the moving mold 1, and the top of the bracket 28 is fixedly connected to the push roller 29 above the isosceles trapezoidal push block 27. Specifically, by setting the clamping plate 23, during the upward movement of the ejector pin 3, the isosceles trapezoidal push block 27 moves upward and passes through the push roller 29. Under the squeezing action of the push roller 29, the isosceles trapezoidal push block 27 drives the clamping plate 23 at the corresponding position to move, causing the first rack 26 at the corresponding position to move and drive the first gear 25 to rotate, thereby bringing the two clamping plates 23 closer to each other, compressing the third spring 24, clamping the top of the plastic part, providing additional support, and preventing the plastic part from shifting or bending during ejection. After the plastic part is completely detached from the mold cavity 101, the bottom end of the isosceles trapezoidal push block 27 moves above the push roller 29. Then, under the action of the third spring 24, the two clamping plates 23 move away from each other, thereby canceling the clamping of the plastic part, making it easy to remove the plastic part from the moving mold 1 by suction cup or robot arm.

[0027] As a further embodiment of the present invention, the bottom end of the L-shaped pusher 30 is fixedly connected to the top end of the moving mold 1 at the position corresponding to the position of the flipping block 20, and the top end of the L-shaped pusher 30 is located above the flipping block 20. Specifically, after the bottom of the isosceles trapezoidal push block 27 moves above the push roller 29, the ejector pin 3 continues to move up and down, causing the L-shaped mounting bracket 18 to move upward, so that the flipping block 20 contacts the L-shaped push bracket 30. Under the squeezing action of the L-shaped push bracket 30, the flipping bracket 19 flips, so that the clamping plate 23 moves away from the plastic part, making room for unloading, so that the plastic part can be taken out from the moving mold 1 by suction cup or robot.

[0028] As a further embodiment of the present invention, rubber pads 2301 are fixed on the side walls of both clamping plates 23. By setting the rubber pads 2301, the clamping force is increased and the mold core 201 is prevented from falling off.

[0029] The working principle of this invention is as follows: After injection molding is completed, the stationary mold 2 is removed from the moving mold 1. During the process of removing the stationary mold 2 from the moving mold 1, the trapezoidal slider 6 is driven to move downward by the pushing mechanism, thereby opening the trapezoidal groove 5. Then, cylinder 17 is activated, causing the telescopic rod of cylinder 17 to move upward, thereby driving the push plate 16 to move upward. The connecting rod 15 drives the piston 14 to move upward. At this time, under the tension of the first spring 4, the ejector pin 3 cannot move upward, causing the piston 14 to move upward, compressing the air in the air cylinder 12. The air in the air cylinder 12 is then discharged into the ejector pin 3 through the air pipe 13, and then discharged through the trapezoidal groove 5. The discharge of gas through the trapezoidal groove 5 serves two purposes: firstly, it provides air cooling to the bottom of the plastic part, allowing the corresponding position to cool and solidify quickly, improving the strength of the corresponding position of the plastic part, and preventing deformation after the ejector pin 3 contacts the plastic part; secondly, the gas discharged through the trapezoidal groove 5 enters the mold cavity 101, increasing the air pressure in the mold cavity 101, which helps to release the negative pressure between the plastic part and the inner wall of the mold cavity 101, allowing the plastic part to separate from the inner wall of the mold cavity 101. This helps to reduce the friction between the plastic part and the inner wall of the mold cavity 101 when the ejector pin 3 pushes the plastic part later, thereby reducing damage to the plastic part. After the piston 14 moves to the top of the air cylinder 12, the piston 14 pushes the air cylinder 12, causing the ejector pin 3 to move upward. The first spring 4 is stretched, thereby pushing the plastic part upward to achieve demolding. After demolding, the telescopic rod of cylinder 17 moves downward, causing ejector pin 3 to move downward first, and then, under the action of the first spring 4, piston 14 moves downward, thereby refilling air into cylinder 12.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A thin-walled shell anti-deformation injection mold, characterized in that, include: The moving mold (1) and the stationary mold (2) are provided. The top of the moving mold (1) is provided with a mold cavity (101), and the bottom of the stationary mold (2) is fixedly connected with a mold core (201). Several ejector pins (3) are symmetrically slidably connected to the inner wall of the moving mold (1). A first spring (4) is fixedly connected between the bottom end of the ejector pin (3) and the moving mold (1). The ejector pin (3) has a hollow structure and a trapezoidal groove (5) is opened at the top end of the ejector pin (3). Trapezoidal slider (6), the trapezoidal slider (6) is slidably connected in the trapezoidal groove (5), the bottom end of the trapezoidal slider (6) is fixedly connected to a connecting frame (7), the connecting frame (7) is sealed and slidably connected to the bottom end of the ejector pin (3), and a second spring (11) is fixedly connected between the connecting frame (7) and the bottom end of the moving mold (1). The pushing mechanism pushes the trapezoidal slider (6) downward during the separation of the stationary mold (2) and the moving mold (1) to open the trapezoidal groove (5). An air cylinder (12) is provided with an air pipe (13) fixedly connected to the top side wall of the air cylinder (12). The air pipe (13) is fixedly connected to the ejector pin (3). A piston (14) is sealed and slidably connected inside the air cylinder (12). A connecting rod (15) is fixedly connected to the bottom end of the piston (14). A push plate (16) is fixedly connected to the bottom end of the connecting rod (15). Cylinder (17), the cylinder (17) is fixedly connected inside the moving mold (1), and the bottom end of the telescopic rod of the cylinder (17) is fixedly connected to the push plate (16).

2. The thin-walled shell anti-deformation injection mold according to claim 1, characterized in that, Also includes: L-shaped mounting bracket (18), the bottom end of which is fixedly connected to the side wall of the ejector pin (3) at the corresponding position, and the top end of which penetrates the top end of the moving mold (1) and is slidably connected to the moving mold (1); A flip frame (19) is rotatably connected to the top of an L-shaped mounting bracket (18). A clamping assembly is provided at the end of the flip frame (19). The clamping assembly clamps the top of the plastic part during the upward movement of the ejector pin (3). Two flipping blocks (20) are fixed coaxially with both sides of the flipping frame (19), and a torsion spring (21) is fixedly connected between the flipping blocks (20) and the L-shaped mounting frame (18). The storage groove (203) is located at the bottom of the stationary mold (2) corresponding to the position of the L-shaped mounting bracket (18). A push rod (22) is fixedly connected to the storage groove (203) corresponding to the position of one of the flipping blocks (20). A first slide groove (102) is fixedly connected to the top of the moving mold (1) corresponding to the position of the push rod (22).

3. The thin-walled shell anti-deformation injection mold according to claim 2, characterized in that, The clamping assembly includes: Two clamping plates (23) are symmetrically slidably connected to the flipping frame (19); Two first gears (25) are symmetrically rotated and connected to the flipping frame (19). The bottom and top ends of the two first gears (25) respectively mesh with two first racks (26). The two first racks (26) are respectively fixedly connected to the clamping plates (23) at corresponding positions. A pushing component is used to push one of the clamping plates (23) to move.

4. The thin-walled shell anti-deformation injection mold according to claim 3, characterized in that, The actuating component includes: An isosceles trapezoidal push block (27) is fixedly connected to one of the clamping plates (23), and a third spring (24) is fixedly connected between the clamping plate (23) and the flipping frame (19). The bracket (28) is fixedly connected to the top of the moving mold (1), and the top of the bracket (28) is fixedly connected to the push roller (29) above the isosceles trapezoidal push block (27).

5. A thin-walled shell anti-deformation injection mold according to claim 2, characterized in that, It also includes an L-shaped pusher (30), the bottom end of which is fixedly connected to the top of the moving mold (1) at the position corresponding to the flip block (20), and the top of the L-shaped pusher (30) is located above the flip block (20).

6. The thin-walled shell anti-deformation injection mold according to claim 1, characterized in that, The propulsion mechanism includes: The second rack (8) is fixedly connected to the bottom end of the connecting frame (7); The second gear (9) is rotatably connected in the moving mold (1). The second gear (9) meshes with the second rack (8). The side wall of the second gear (9) is meshed with the third rack (10). The top end of the third rack (10) is fixedly connected to the bottom end of the stationary mold (2). The second slide groove (103) is located at the top of the moving mold (1) corresponding to the position of the third rack (10).

7. The thin-walled shell anti-deformation injection mold according to claim 3, characterized in that, Both clamping plates (23) have rubber pads (2301) fixed to their side walls.

8. A thin-walled shell anti-deformation injection mold according to claim 1, characterized in that, The top of the stationary mold (2) is fixedly connected to the feed pipe (202).

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