An easy-to-demold automotive taillight cover processing mold

Abstract

This invention discloses an easy-to-demold automotive taillight cover processing mold, specifically relating to the field of automotive parts processing mold technology. The invention utilizes the rotation of a rotating shaft to drive a gear and a resonant assembly to move together. The gear drives two centrally symmetrical rack plates to move closer together. During this process, the ejector rod changes from a non-slipping state to a vertically sliding state. Simultaneously, the resonant assembly sequentially applies vibration energy to the inner side and bottom surface of the molding cavity, causing fluctuations in the contact surface between the automotive taillight cover and the molding cavity before ejection. These fluctuations reduce the friction between the product and the molding cavity, allowing the automotive taillight cover to be demolded as completely as possible without damaging the surface. When vibrating the bottom surface of the molding cavity, due to the continued rotation of the rotating shaft, the sliding of the limiting post within the zigzag groove drives the ejector rod to slide vertically along the inner wall of the working cavity. The ejector rod then drives the corresponding lifting block to eject the automotive taillight cover from the mold, resulting in excellent demolding performance.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing mold technology, specifically to an easy-to-demold automotive taillight cover processing mold. Background Technology

[0002] The taillight cover is an important component of the rear of a car. It is located on the outside of the taillight and is usually made of modified plastic with high strength, heat resistance and good weather resistance. It is manufactured by injection molding.

[0003] A search revealed that the invention patent with publication number CN113427711A discloses a mold for processing automotive taillight covers that facilitates demolding. The bottom plate is equipped with a vertical position adjustment mechanism, which facilitates demolding of the cover in different directions. The operation is simple, and the mold air pressure increases, which can demold the cover while cooling it.

[0004] In the existing solution, the taillight cover is ejected by an ejection mechanism. However, there is an adhesion between the taillight cover and the mold. Direct ejection may damage the surface of the taillight cover, and the integrity of the taillight cover cannot be guaranteed. Summary of the Invention

[0005] The purpose of this invention is to provide an easy-to-demold automotive taillight cover processing mold to solve the problem mentioned in the background art that direct ejection may cause damage to the surface of the automotive taillight cover and compromise the integrity of the automotive taillight cover.

[0006] This invention can be achieved through the following technical solution: an easy-to-demold automotive taillight cover processing mold, including a lower mold base mounted on a base, the upper surface of the lower mold base being provided with a forming mold cavity for producing automotive taillight covers, and an upper moving mold being provided directly above the lower mold base to cooperate and press with the forming mold cavity, the inner cavity of the lower mold base being provided with a working cavity located below the forming mold cavity, a lifting block being installed on the bottom surface of the inner cavity of the forming mold cavity to perform lifting and lowering movements, the upper surface of the lifting block being flush with the bottom surface of the inner cavity of the forming mold cavity, and a transverse lifting assembly for lifting the lifting block being installed inside the working cavity;

[0007] The transverse lifting assembly includes a rack plate that slides laterally along the inner wall of the working chamber. An abutment portion is fixedly connected to the upper surface of the rack plate. A zigzag groove is provided through the surface of the abutment portion. A limit post slides against the zigzag groove. A push rod that slides vertically along the inner wall of the working chamber is fixedly connected to the end of the limit post. The upper end of the push rod is fixedly connected to the lifting block, and a blocking block is provided on the lower surface of the push rod.

[0008] Two rack plates are provided and are centrally symmetrically arranged on the two inner walls of the working cavity. A gear driven by a servo motor is installed between the two rack plates. A rotating shaft is fixed in the middle of the gear, and a resonant component for demolding the inner cavity of the molding mold is fixed at the top of the rotating shaft.

[0009] A further technical improvement of the present invention is that: the abutting part includes a connecting rod fixedly connected to the top end of the rack plate, the end of the connecting rod is fixedly connected to a straight section, and the end of the straight section is fixedly connected to an upwardly inclined section;

[0010] The zigzag slide groove includes a first slide groove that runs through the surface of the straight section, and a second slide groove that communicates with the first slide groove and is used for the limiting column to slide.

[0011] A further technical improvement of the present invention is that: a sliding block 1 is provided on the outer surface of the rack plate, a slide rail 1 for the horizontal sliding of the sliding block 1 is provided on the inner wall surface of the working cavity, a sliding block 2 is installed on the outer wall surface of the top rod and below the limiting post, and a vertical slide rail 1 for the limiting sliding of the sliding block 2 is provided on one side of the slide rail 1 on the inner wall surface of the working cavity.

[0012] A further technical improvement of the present invention is that: the resonance component includes mounting rods fixed on both sides of the top of the rotating shaft, and the inner walls on both sides of the top of the working cavity are provided with inlet grooves for the ends of the mounting rods to enter, and the inlet grooves are connected to a vibration cavity, which is close to the side wall of the molding cavity.

[0013] A further technical improvement of the present invention is that: an electric push rod is fixedly connected to the end of the mounting rod, and a vibration block is fixedly connected to the telescopic end of the electric push rod to vibrate the inner wall of the vibration chamber and the bottom surface of the inner cavity of the molding cavity.

[0014] A further technical improvement of the present invention is that: a top plate is provided above the lower mold base, and four limiting rods are installed at the edge of the upper surface of the base. The top ends of the four limiting rods are fixed to the top plate, and a limiting plate pushed by a hydraulic cylinder is installed below the top plate. The limiting plate is slidably connected to the four limiting rods.

[0015] A further technical improvement of the present invention is that: a telescopic rod is installed on the lower surface of the limiting plate and on one side of the limiting rod, and the limiting plate is L-shaped. A linear cylinder is installed on the L-shaped end face of the limiting plate. A transmission plate driven by the linear cylinder is slidably arranged on the lower surface of the limiting plate. A sliding block three is installed on the upper surface of the transmission plate. A slide rail two is provided on the lower surface of the limiting plate for sliding block three.

[0016] A further technical improvement of the present invention is that: the upper moving mold is installed on the lower surface of the transmission plate, and a punch is provided on the other side of the upper moving mold; a demolding seat is provided on one side of the lower mold base; the upper surface of the demolding seat is provided with a demolding cavity containing a demolding agent, and the demolding cavity is located directly below the punch.

[0017] An easy-to-demold automotive taillight cover processing mold, the working method includes the following steps:

[0018] Step 1: After the taillight cover is formed, the rotating shaft drives the gear to make the two rack plates slide laterally on the inner wall of the working cavity, and drive the abutment part to move together. The limiting post slides from one end of the sliding groove to the middle position of the sliding groove. The push rod does not slide vertically. During this process, the electric push rod extends and pushes the vibrating block into the inner cavity of the vibration cavity. Through the clockwise and counterclockwise reciprocating rotation of the rotating shaft, the two vibrating blocks drive the vibration energy to act on the inner wall of the forming mold cavity.

[0019] Step 2: The rotating shaft continues to rotate, and the limiting post slides from the middle of sliding groove one until it reaches the end of sliding groove two. During this process, the vibrating block rotates away from the inlet groove to the lower surface of the molding cavity. The electric push rod reciprocates, generating vibration energy on the lower surface of the molding cavity. At the same time, under the abutting fit, the sliding of the limiting post in sliding groove two generates an upward thrust on the ejector rod. The lifting block is used to eject the vibrating product that has broken away from the molding cavity and demold it.

[0020] Step 3: After the product is removed, the linear cylinder pushes the transmission plate to slide, moving the punch on the transmission plate to the top of the forming cavity. The punch, with a layer of release agent on its surface, then applies the release agent to the inner surface of the forming cavity.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The rotation of the rotating shaft drives the gear and the resonant assembly to move together. The gear drives the two centrally symmetrical rack plates to move closer to each other. During this process, the ejector rod changes from a non-slipping state to a vertically sliding state. At the same time, the resonant assembly applies vibration energy to the inner side and bottom surface of the molding cavity in sequence, causing the contact surface between the car taillight cover and the molding cavity to fluctuate before ejection. These fluctuations reduce the friction between the product and the molding cavity, allowing the car taillight cover to be demolded as completely as possible without damaging the surface. When vibrating the bottom surface of the molding cavity, due to the continued rotation of the rotating shaft, the sliding of the limit post in the zigzag groove drives the ejector rod to slide vertically along the inner wall of the working cavity. The ejector rod drives the corresponding lifting block to eject the car taillight cover out of the mold, resulting in a good demolding effect and ensuring the integrity of the demolding.

[0023] 2. The rotating shaft has two motion states. The first state is a reciprocating rotation clockwise and counterclockwise, but the limiting post does not slide beyond the middle position of sliding groove one, and the push rod does not slide vertically. The second state is that the rotating shaft continues to rotate, and the limiting post slides from the middle of sliding groove one until it reaches the end of sliding groove two. In the first state, the electric push rod pushes the vibrating block into the vibration chamber, and the mounting rod follows the clockwise and counterclockwise reciprocating rotation of the rotating shaft and drives the vibrating block to exert vibration energy on the inner wall of the molding cavity. In the second state, the electric push rod retracts, and the top surface of the vibrating block is lower than the top surface of the inner cavity of the working cavity. The rotating shaft drives the vibrating block to enter the working cavity through the inlet groove. During this process, the electric push rod reciprocates and exerts vibration energy on the bottom surface of the inner cavity of the molding cavity, causing the contact surface between the car taillight cover and the molding cavity to fluctuate.

[0024] 3. The upper moving mold enters the forming cavity to shape the car taillight cover. Simultaneously, the punch moves downward and enters the demolding cavity. The release agent is applied to the outer surface of the punch. After the car taillight cover is removed, the linear cylinder pushes the transmission plate to slide on the bottom surface of the limiting plate. The punch on the transmission plate is moved to the top of the forming cavity and then pressed down. The release agent is applied to the inner surface of the forming cavity using the punch, which facilitates the subsequent demolding of the car taillight cover. Attached Figure Description

[0025] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0027] Figure 2 This is a three-dimensional structural diagram of the horizontal lifting assembly of the present invention;

[0028] Figure 3 This is a top view schematic diagram of the mounting structure of the gear and two rack plates of the present invention;

[0029] Figure 4 This is a cross-sectional view showing the installation of the vibration block of the present invention;

[0030] Figure 5 This is a schematic diagram of the installation structure of the transmission plate and the limiting plate of the present invention.

[0031] In the diagram: 1. Lower mold base; 2. Working cavity; 3. Forming mold cavity; 4. Ejector block; 5. Telescopic rod; 6. Top plate; 7. Limiting plate; 8. Upper moving mold; 9. Transmission plate; 10. Limiting rod; 11. Gear; 12. Rack plate; 13. Rotating shaft; 14. Sliding block one; 15. Connecting rod; 16. Straight section; 17. Inclined section; 18. Sliding groove one; 19. Sliding groove two; 20. Limiting post; 21. Ejector rod; 22. Blocking block; 23. Sliding block two; 24. Slide rail one; 25. Through groove; 26. Vibration cavity; 27. Mounting rod; 28. Electric push rod; 29. ​​Vibration block; 30. Sliding block three; 31. Demolding base; 32. Demolding cavity; 33. Punch die; 34. Linear cylinder. Detailed Implementation

[0032] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0033] Please see Figures 1-5 As shown, this invention provides an easy-to-demold automotive taillight cover processing mold, including a lower mold base 1 mounted on a base. The upper surface of the lower mold base 1 is provided with a forming cavity 3 for producing automotive taillight covers, and an upper moving mold 8 is provided directly above the lower mold base 1 to cooperate and press with the forming cavity 3. The inner cavity of the lower mold base 1 and below the forming cavity 3 is provided with a working cavity 2. A lifting block 4 that performs lifting and lowering movements is installed on the bottom surface of the inner cavity of the forming cavity 3. The upper surface of the lifting block 4 is flush with the bottom surface of the inner cavity of the forming cavity 3. A transverse lifting assembly for lifting the lifting block 4 is installed inside the working cavity 2. The device includes a rack plate 12 that slides laterally along the inner wall of the working cavity 2. The upper surface of the rack plate 12 is fixedly connected to an abutment part, and a zigzag groove is provided through the surface of the abutment part. A limit post 20 slides and abuts against the zigzag groove. The end of the limit post 20 is fixedly connected to a push rod 21 that slides vertically along the inner wall of the working cavity 2. The upper end of the push rod 21 is fixedly connected to the lifting block 4, and a blocking block 22 is provided on the lower surface of the push rod 21. The rack plate 12 drives the abutment part to slide laterally together, so that the limit post 20 slides in the zigzag groove, drives the push rod 21 to slide upward and drives the lifting block 4 to move upward, thereby ejecting the product from the mold.

[0034] Two rack plates 12 are provided and are centrally symmetrically arranged on the two inner walls of the working cavity 2. A gear 11 driven by a servo motor is installed between the two rack plates 12. A rotating shaft 13 is fixed in the middle of the gear 11, and a resonant component for demolding the inner cavity of the molding cavity 3 is fixed at the top of the rotating shaft 13. Before ejection, the rotating shaft 13 rotates, driving the gear 11 and the resonant component to move together. The gear 11 drives the two centrally symmetrical rack plates 12 to move closer to each other. During this process, the ejector rod 21 changes from a non-slip state to a vertically sliding state, and at the same time, the resonant component sequentially aligns with the mold cavity 3. The vibration energy acting on the inner side and bottom surface of the mold cavity 3 causes the contact surface between the car taillight cover and the molding cavity 3 to fluctuate before ejection. These fluctuations reduce the friction between the product and the molding cavity 3, allowing the car taillight cover to be demolded as completely as possible without damaging the surface, resulting in a good demolding effect. When the bottom surface of the molding cavity 3 is vibrated, due to the continued rotation of the rotating shaft 13, the sliding of the limiting post 20 in the zigzag groove drives the ejector rod 21 to slide vertically along the inner wall of the working cavity 2. The ejector rod 21 drives the corresponding lifting block 4 to eject the car taillight cover from the mold.

[0035] See Figure 2 As shown, the abutting part includes a connecting rod 15 fixedly connected to the top of the rack plate 12, a straight section 16 fixedly connected to the end of the connecting rod 15, and an upwardly inclined section 17 fixedly connected to the end of the straight section 16.

[0036] The zigzag slide includes a sliding groove 18 that runs through the surface of the straight section 16, and a sliding groove 29 that communicates with the sliding groove 18 and is used to limit the sliding of the limiting post 20 on the surface of the inclined section 17. The rotating shaft 13 has two motion states. The first state is a reciprocating rotation in clockwise and counterclockwise directions, but the limiting post 20 does not slide beyond the middle position of the sliding groove 18. At this time, the push rod 21 does not slide vertically. The second state is that the rotating shaft 13 continues to rotate, and the limiting post 20 slides from the middle of the sliding groove 18 until it reaches the end of the sliding groove 29.

[0037] See Figure 3 As shown, a sliding block 14 is provided on the outer surface of the rack plate 12, and a slide rail 24 for the sliding block 14 to slide laterally is provided on the inner wall of the working cavity 2. A sliding block 23 is installed on the outer wall of the top rod 21 below the limiting post 20, and a vertical slide rail for the sliding block 23 to be limited and slid is provided on one side of the slide rail 24 on the inner wall of the working cavity 2.

[0038] See Figure 4 As shown, the resonance assembly includes mounting rods 27 fixed on both sides of the top of the rotating shaft 13. The inner walls on both sides of the top of the working cavity 2 are provided with inlet grooves 25 for the ends of the mounting rods 27 to enter. The inlet grooves 25 are connected to the vibration cavity 26, which is close to the side wall of the molding cavity 3.

[0039] An electric push rod 28 is fixedly connected to the end of the mounting rod 27. A vibrating block 29 is fixedly connected to the telescopic end of the electric push rod 28 to vibrate the inner wall of the vibration chamber 26 and the bottom surface of the inner cavity of the molding cavity 3. In the first state, the electric push rod 28 pushes the vibrating block 29 into the vibration chamber 26. The mounting rod 27 follows the clockwise and counterclockwise reciprocating rotation of the rotating shaft 13 and drives the vibrating block 29 to exert vibration energy on the inner wall of the molding cavity 3. In the second state, the electric push rod 28 retracts. At this time, the top surface of the vibrating block 29 is lower than the top surface of the inner cavity of the working cavity 2. The rotating shaft 13 drives the vibrating block 29 to enter the working cavity 2 through the inlet groove 25. During this process, the electric push rod 28 reciprocates to exert vibration energy on the bottom surface of the inner cavity of the molding cavity 3, causing the contact surface between the car taillight cover and the molding cavity 3 to fluctuate, reducing the friction between the product and the molding cavity 3.

[0040] See Figure 1 As shown, a top plate 6 is provided above the lower mold base 1. Four limiting rods 10 are installed at the edge of the upper surface of the base. The top ends of the four limiting rods 10 are fixed to the top plate 6. A limiting plate 7 pushed by a hydraulic cylinder is installed below the top plate 6. The limiting plate 7 is slidably connected to the four limiting rods 10. The hydraulic cylinder on the upper surface of the top plate 6 pushes the limiting plate 7 to slide along the limiting rods 10 and press down.

[0041] See Figure 1 and Figure 5 As shown, a telescopic rod 5 is installed on the lower surface of the limiting plate 7 and on one side of the limiting rod 10. The limiting plate 7 is L-shaped. A linear cylinder 34 is installed on the L-shaped end face of the limiting plate 7. A transmission plate 9 pushed by the linear cylinder 34 is slidably arranged on the lower surface of the limiting plate 7. A sliding block 30 is installed on the upper surface of the transmission plate 9. A slide rail 2 is provided on the lower surface of the limiting plate 7 for sliding of the sliding block 30.

[0042] The upper moving mold 8 is installed on the lower surface of the transmission plate 9, and a punch 33 is provided on the other side of the upper moving mold 8. A demolding seat 31 is provided on one side of the lower mold base 1. The upper surface of the demolding seat 31 is provided with a demolding cavity 32 containing a demolding agent, and the demolding cavity 32 is located directly below the punch 33. When producing the car taillight cover, the upper moving mold 8 enters the molding cavity 3 to shape the car taillight cover. The punch 33 moves downward and enters the demolding cavity 32 at the same time, covering the outer surface of the punch 33 with the demolding agent. Then the upper moving mold 8 and the punch 33 open upward to wait for the product to be taken out. After taking out, the linear cylinder 34 pushes the transmission plate 9 to slide on the bottom surface of the limiting plate 7, moving the punch 33 on the transmission plate 9 to the top of the molding cavity 3. Then it is pressed down, and the punch 33 is used to apply the demolding agent to the inner surface of the molding cavity 3 to facilitate the demolding of the car taillight cover.

[0043] A method for using an easy-to-demold automotive taillight cover processing mold, the method comprising the following steps:

[0044] Step 1: After the taillight cover is formed, the rotating shaft 13 drives the gear 11 to make the two rack plates 12 slide laterally on the inner wall of the working cavity 2, and drive the abutment part to move together. The limiting post 20 slides from one end of the sliding groove 18 to the middle position of the sliding groove 18. The push rod 21 does not slide vertically. During this process, the electric push rod 28 extends and pushes the vibrating block 29 into the inner cavity of the vibration cavity 26. Through the clockwise and counterclockwise reciprocating rotation of the rotating shaft 13, the two vibrating blocks 29 are driven to exert vibration energy on the inner wall of the forming mold cavity 3.

[0045] Step 2: The rotating shaft 13 continues to rotate, and the limiting post 20 slides from the middle of the sliding groove 18 until it reaches the end of the sliding groove 19. During this process, the vibrating block 29 rotates away from the inlet groove 25 to the lower surface of the molding cavity 3, and is reciprocated by the electric push rod 28, generating vibration energy on the lower surface of the molding cavity 3. At the same time, under the abutting fit, the sliding of the limiting post 20 in the sliding groove 19 generates an upward pushing force on the push rod 21, and the lifting block 4 is used to push the vibrating product out of the molding cavity 3 and demold it.

[0046] Step 3: After the product is removed, the linear cylinder 34 pushes the transmission plate 9 to slide, moving the punch 33 on the transmission plate 9 to directly above the forming cavity 3. The punch 33, with a layer of release agent on its surface, then applies the release agent to the inner surface of the forming cavity 3.

[0047] In use, the rotation of the rotating shaft 13 drives the gear 11 and the resonant assembly to move together. The gear 11 drives the two centrally symmetrical rack plates 12 to move closer to each other. During this process, the ejector rod 21 changes from a non-slipping state to a vertically sliding state. At the same time, the resonant assembly applies vibration energy to the inner side and bottom surface of the molding cavity 3 in sequence, causing the contact surface between the car taillight cover and the molding cavity 3 to fluctuate before ejection. These fluctuations reduce the friction between the product and the molding cavity 3, allowing the car taillight cover to be demolded as completely as possible without damaging the surface. When vibrating the bottom surface of the molding cavity 3, due to the continued rotation of the rotating shaft 13, the sliding of the limiting post 20 in the zigzag groove drives the ejector rod 21 to slide vertically along the inner wall of the working cavity 2. The ejector rod 21 drives the corresponding lifting block 4 to eject the car taillight cover from the mold, resulting in a good demolding effect.

[0048] The rotating shaft 13 has two motion states. In the first state, it reciprocates clockwise and counterclockwise, but the limiting post 20 does not slide beyond the middle position of the sliding groove 18. At this time, the push rod 21 does not slide vertically. In the second state, the rotating shaft 13 continues to rotate, and the limiting post 20 slides from the middle of the sliding groove 18 until it reaches the end of the sliding groove 19. In the first state, the electric push rod 28 pushes the vibrating block 29 into the vibration chamber 26, and the mounting rod 27 follows the rotating shaft 13. The clockwise and counterclockwise reciprocating rotation of the first state causes the vibrating block 29 to exert vibration energy on the inner wall of the molding cavity 3; in the second state, the electric push rod 28 retracts, and the top surface of the vibrating block 29 is lower than the top surface of the inner cavity of the working cavity 2. The vibrating block 29 is driven by the rotating shaft 13 to enter the working cavity 2 through the inlet groove 25. During this process, the electric push rod 28 reciprocates to exert vibration energy on the bottom surface of the inner cavity of the molding cavity 3, causing the contact surface between the car taillight cover and the molding cavity 3 to fluctuate.

[0049] The upper moving mold 8 enters the forming cavity 3 to shape the car taillight cover. Simultaneously, the punch 33 moves downward and enters the demolding cavity 32. The mold release agent is applied to the outer surface of the punch 33. After the car taillight cover is removed, the linear cylinder 34 pushes the transmission plate 9 to slide on the bottom surface of the limiting plate 7. The punch 33 on the transmission plate 9 is moved to the top of the forming cavity 3 and then pressed down. The mold release agent is applied to the inner surface of the forming cavity 3 by the punch 33 to facilitate the subsequent demolding of the car taillight cover.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A mold for easily demolded automotive taillight covers, comprising a lower mold base (1) mounted on a base, wherein the upper surface of the lower mold base (1) is provided with a forming cavity (3) for producing automotive taillight covers, and an upper moving mold (8) is provided directly above the lower mold base (1) to cooperate and press with the forming cavity (3), characterized in that: The inner cavity of the lower mold base (1) is provided with a working cavity (2) located below the forming mold cavity (3). A lifting block (4) for lifting movement is installed on the bottom surface of the inner cavity of the forming mold cavity (3). The upper surface of the lifting block (4) is flush with the bottom surface of the inner cavity of the forming mold cavity (3). A transverse lifting assembly for lifting the lifting block (4) is installed inside the working cavity (2). The transverse lifting assembly includes a rack plate (12) that slides laterally along the inner wall of the working chamber (2). The upper surface of the rack plate (12) is fixedly connected to an abutment part. A zigzag groove is provided through the surface of the abutment part. A limit post (20) slides and abuts against the zigzag groove. A push rod (21) that slides vertically along the inner wall of the working chamber (2) is fixedly connected to the end of the limit post (20). The upper end of the push rod (21) is fixedly connected to the lifting block (4), and a blocking block (22) is provided on the lower surface of the push rod (21). Two rack plates (12) are provided, located on the two inner walls of the working cavity (2) respectively, and arranged symmetrically about the center of the working cavity. A gear (11) driven by a servo motor is installed between the two rack plates (12). A rotating shaft (13) is fixed in the middle of the gear (11), and a resonant component for demolding the inner cavity of the molding cavity (3) is fixed at the top of the rotating shaft (13). The abutting part includes a connecting rod (15) fixedly connected to the top of the rack plate (12), and a straight section (16) is fixedly connected to the end of the connecting rod (15), and an upwardly inclined section (17) is fixedly connected to the end of the straight section (16). The zigzag groove includes a sliding groove one (18) that runs through the surface of the straight section (16), and a sliding groove two (19) that communicates with the sliding groove one (18) and is used for limiting the sliding of the limiting post (20).

2. The easy-to-demold automotive taillight cover processing mold according to claim 1, characterized in that, The outer surface of the rack plate (12) is provided with a sliding block one (14), the inner wall of the working cavity (2) is provided with a slide rail one (24) for the sliding block one (14) to slide laterally, the outer wall of the top rod (21) and below the limiting post (20) are provided with a sliding block two (23), and the inner wall of the working cavity (2) is provided with a vertical slide rail one for the limiting sliding of the sliding block two (23) on one side of the slide rail one (24).

3. The easy-to-demold automotive taillight cover processing mold according to claim 1, characterized in that, The resonance assembly includes mounting rods (27) fixed on both sides of the top of the rotating shaft (13). The inner walls on both sides of the top of the working cavity (2) are provided with inlet grooves (25) for the end of the mounting rods (27) to enter. The inlet grooves (25) are connected to a vibration cavity (26). The vibration cavity (26) is close to the side wall of the molding cavity (3).

4. The easy-to-demold automotive taillight cover processing mold according to claim 3, characterized in that, An electric push rod (28) is fixedly connected to the end of the mounting rod (27), and a vibrating block (29) is fixedly connected to the telescopic end of the electric push rod (28) to vibrate the inner wall of the vibration cavity (26) and the bottom surface of the inner cavity of the molding cavity (3).

5. The easy-to-demold automotive taillight cover processing mold according to claim 1, characterized in that, A top plate (6) is provided above the lower mold base (1). Four limiting rods (10) are installed at the edge of the upper surface of the base. The top ends of the four limiting rods (10) are fixed to the top plate (6). A limiting plate (7) pushed by a hydraulic cylinder is installed below the top plate (6). The limiting plate (7) is slidably connected to the four limiting rods (10).

6. The easy-to-demold automotive taillight cover processing mold according to claim 5, characterized in that, A telescopic rod (5) is installed on the lower surface of the limiting plate (7) and on one side of the limiting rod (10). The limiting plate (7) is L-shaped. A linear cylinder (34) is installed on the L-shaped end face of the limiting plate (7). A transmission plate (9) pushed by the linear cylinder (34) is slidably provided on the lower surface of the limiting plate (7). A sliding block three (30) is installed on the upper surface of the transmission plate (9). A slide rail two is provided on the lower surface of the limiting plate (7) for sliding block three (30).

7. The easy-to-demold automotive taillight cover processing mold according to claim 1, characterized in that, The upper moving mold (8) is installed on the lower surface of the transmission plate (9), and a punch (33) is provided on the other side of the upper moving mold (8). A demolding seat (31) is provided on one side of the lower mold base (1). A demolding cavity (32) containing a demolding agent is provided on the upper surface of the demolding seat (31), and the demolding cavity (32) is located directly below the punch (33).

8. A mold for easily demolding automotive taillight covers according to any one of claims 1-7, characterized in that, It also includes a working method, which comprises the following steps: Step 1: After the taillight cover is formed, the rotating shaft (13) drives the gear (11) to make the two rack plates (12) slide laterally on the inner wall of the working cavity (2), and drive the abutment part to move together. The limiting post (20) slides from one end of the sliding groove (18) to the middle position of the sliding groove (18). The push rod (21) does not slide vertically. During this process, the electric push rod (28) extends and pushes the vibrating block (29) into the inner cavity of the vibration cavity (26). Through the clockwise and counterclockwise reciprocating rotation of the rotating shaft (13), the two vibrating blocks (29) are driven to exert vibration energy on the inner wall of the forming mold cavity (3). Step 2: The rotating shaft (13) continues to rotate, and the limiting post (20) slides from the middle of the first sliding groove (18) until it reaches the end of the second sliding groove (19). During this process, the vibrating block (29) rotates away from the inlet groove (25) to the lower surface of the molding cavity (3), and is reciprocated by the electric push rod (28), generating vibration energy on the lower surface of the molding cavity (3). At the same time, under the abutting fit, the sliding of the limiting post (20) in the second sliding groove (19) generates an upward thrust on the push rod (21), and the lifting block (4) pushes the vibrating product out of the molding cavity (3) and demolds it. Step 3: After the product is taken out, the linear cylinder (34) pushes the transmission plate (9) to slide, and moves the punch (33) on the transmission plate (9) to the top of the molding cavity (3). The punch (33) with a layer of release agent on its surface is then applied to the inner surface of the molding cavity (3).

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