Automobile cover plate injection mold convenient to replace

Abstract

The automobile cover plate injection mold convenient to replace comprises a mounting support, a driving assembly is arranged in the mounting support, an inner threaded pipe is arranged in the mounting support through the driving assembly, a fixing seat is mounted at the bottom end of the inner threaded pipe through a bearing, and the fixing seat is fixedly mounted on the lower side wall of the mounting support. A threaded rod is arranged in the inner threaded pipe in a threaded mode, a guide assembly is arranged on the surface of the threaded rod, a mounting shell is fixedly arranged in the mounting support, a locking assembly is arranged in the mounting shell, a mounting frame is arranged on the surface of the mounting shell in a lap joint mode, and a lower mold is fixedly arranged on the top of the mounting frame. The situation that the upper mold and the lower mold need to be replaced with too much time is avoided, the situation that the upper mold and the lower mold need to be replaced with the help of a special tool is avoided, and the situation that the production speed of the injection mold is reduced due to the fact that the upper mold and the lower mold need to be replaced with too much time is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds for automotive covers, and particularly to an injection mold for automotive covers that is convenient to replace. Background Art

[0002] Automotive covers are important components of an automobile body, usually referring to the covers of parts such as the engine hood, trunk lid, and doors. Since automotive covers are integrally formed, injection molds are used to produce automotive covers. The upper mold is pushed downward by a hydraulic system so that the upper mold and the lower mold are closed, and the melted raw material is injected into the mold through an injection pipe. When the melted raw material cools and solidifies inside the mold, the upper mold and the lower mold are separated by the hydraulic system, and then the formed automotive cover can be taken out from the lower mold.

[0003] At that time, due to the different positions where automotive covers are used, the specifications of automotive covers are all different. Therefore, different injection molds are required. To save costs, the upper mold and the lower mold of the injection mold are replaced with those that meet the required specifications, and then the automotive cover is injection-molded using the replaced upper mold and lower mold.

[0004] At that time, most of the existing injection molds were fixed with bolts, so when replacing the mold, the fixed bolts had to be disassembled one by one, and a special disassembly tool was needed during the disassembly process. After the mold was removed, a mold that met the requirements was put in, and the bolts were tightened one by one to fix the upper mold and the lower mold. The above replacement process takes too much time and requires the use of special tools, which reduces the production speed of the injection mold. Based on the above problems, this application proposes an injection mold for automotive covers that is convenient to replace. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides an injection mold for automotive covers that is convenient to replace to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An injection mold for an automobile cover plate that is convenient to replace, including a mounting bracket. A driving component is arranged inside the mounting bracket. An internally threaded pipe is arranged inside the mounting bracket through the driving component. The bottom end of the internally threaded pipe is installed with a fixed seat through a bearing. The fixed seat is fixedly installed on the lower side wall of the mounting bracket. A screw rod is arranged inside the internally threaded pipe in a threaded manner. A guiding component is arranged on the surface of the screw rod. An installation housing is fixedly arranged inside the mounting bracket. A locking component is arranged inside the installation housing. An installation frame is arranged in a lapping manner on the surface of the installation housing. A lower mold is fixedly arranged at the top of the installation frame. A connecting frame is fixedly arranged at the top of the mounting bracket. A hydraulic push rod is fixedly arranged at the top of the connecting frame. The output end of the hydraulic push rod is fixedly arranged with a moving plate. The moving plate is slidably connected with the connecting frame. A fixing component is arranged at the top of the moving plate. The upper mold is fixedly arranged at the bottom of the moving plate.

[0008] Preferably, the driving component includes a driving motor fixedly installed on the lower side wall of the mounting bracket. The output end of the driving motor is fixedly arranged with a worm. The front end of the worm is installed with a mounting seat through a bearing. The mounting seat is fixedly installed on the lower side wall of the mounting bracket. A worm gear is meshed on the surface of the worm. The worm gear is fixedly installed on the surface of the internally threaded pipe.

[0009] Preferably, the guiding component includes a guiding plate fixedly installed on the surface of the screw rod. A guiding column is fixedly arranged at the bottom of the guiding plate. A guiding sleeve is slidably arranged on the surface of the guiding column. The guiding sleeve is fixedly installed on the lower side wall of the mounting bracket.

[0010] Preferably, the locking component includes a connecting plate fixedly installed inside the mounting bracket. A sliding rod is slidably arranged inside the connecting plate. An installation plate is fixedly arranged at the end of the sliding rod. A locking spring is fixedly arranged on the side of the installation plate close to the connecting plate. The locking spring is fixedly connected with the connecting plate. A locking plate is fixedly arranged on the side of the installation plate. The locking plate is slidably connected with both the installation housing and the installation frame. A trapezoidal block is fixedly arranged at the end of the sliding rod away from the installation plate. A wedge-shaped block is arranged in a lapping manner on the surface of the trapezoidal block. The wedge-shaped block is fixedly installed at the top end of the screw rod. A pushing block is fixedly arranged at the top of the wedge-shaped block.

[0011] Preferably, a support block is fixedly arranged at the top of the mounting bracket. A connecting hole is arranged through the top of the support block. A support column is slidably arranged inside the connecting hole. The support column is fixedly installed at the bottom of the lower mold.

[0012] Preferably, the fixing component includes a fixing housing fixedly installed on the top of the moving plate, a sliding plate is slidably arranged inside, a fixing spring is fixedly arranged between the opposite surfaces of the sliding plates, a fixing column is fixedly arranged on the side of the sliding plate away from the fixing spring, a fixing plate is slidably arranged on the surface of the fixing column, the fixing plate is slidably connected to the moving plate, the fixing plate is fixedly installed on the top of the upper mold, a pulling plate is fixedly arranged on the front side of the left sliding plate, and a limiting component is arranged on the surface of the pulling plate.

[0013] Preferably, the limiting component includes a connecting shaft fixedly installed on the surface of the pulling plate, a limiting ring is rotatably arranged on the surface of the connecting shaft, a limiting plate is arranged to the right of the limiting ring, and the limiting plate is fixedly installed on the front side of the fixing housing.

[0014] Preferably, a lower toothed plate is fixedly arranged on the rear side of the left sliding plate, a gear is meshed on the surface of the lower toothed plate, a mounting shaft is fixedly arranged inside the gear, the mounting shaft is rotatably arranged inside the fixing housing, an upper toothed plate is meshed on the surface of the gear, and the upper toothed plate is fixedly installed on the rear side of the right sliding plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. For this injection mold for automotive covers that is easy to replace, by driving the driving component to drive the internally threaded tube to rotate, the screw rod drives the locking component to move, so that the locking component releases the locking effect on the installation frame, and then the lower mold can be replaced. Then, by driving the driving component to drive the internally threaded tube to reverse, the locking component is driven to move again, so that the locking component locks the installation frame, and then the lower mold can be quickly replaced. By releasing the fixing effect of the fixing component, the upper mold can be replaced. This avoids the situation of taking too much time to replace the upper mold and the lower mold, avoids the need to use special tools to replace the upper mold and the lower mold, and avoids reducing the production speed of the injection mold due to taking too much time to replace the upper mold and the lower mold.

[0017] 2. For this injection mold for automotive covers that is easy to replace, when the pulling plate drives the sliding plate to move, the sliding plate drives the other sliding plate to move through the lower toothed plate, the gear, the mounting shaft and the upper toothed plate, so that the fixing columns on both the left and right sides are simultaneously moved out of the fixing plate, avoiding the situation of pulling the pulling plate with both hands, and making it more convenient to replace the upper mold.

[0018] 3. For this injection mold for automotive covers that is easy to replace, the position of the pulling plate can be limited through the limiting component, so that the pulling plate limits the position of the fixing column through the sliding plate, enabling a single worker to operate during the replacement process of the upper mold, avoiding the situation of requiring multiple workers to cooperate to replace the upper mold, and thus making it more convenient to replace the upper mold. Brief Description of the Drawings

[0019] Figure 1 This is an isometric view of the structure of the present invention;

[0020] Figure 2 This is a front sectional view of the structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the installation housing of the present invention;

[0022] Figure 4 This is a schematic diagram of a partial structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the fixing component of the present invention;

[0024] Figure 6 This is a schematic diagram of a partial structure of the fixing component of the present invention;

[0025] Figure 7 This is another schematic diagram of a partial structure of the fixing component of the present invention.

[0026] In the figures: 1, mounting bracket; 2, drive motor; 3, worm; 4, mounting seat; 5, worm gear; 6, internally threaded tube; 7, fixed seat; 8, screw; 9, guide plate; 10, guide post; 11, guide sleeve; 12, installation housing; 13, connecting plate; 14, sliding rod; 15, mounting plate; 16, locking plate; 17, mounting frame; 18, trapezoidal block; 19, wedge block; 20, push block; 21, lower die; 22, support block; 23, connecting hole; 24, support column; 25, connecting frame; 26, hydraulic push rod; 27, moving plate; 28, fixed housing; 29, pull plate; 30, sliding plate; 31, fixing spring; 32, fixing column; 33, fixing plate; 34, lower tooth plate; 35, gear; 36, mounting shaft; 37, upper tooth plate; 38, connecting shaft; 39, limit ring; 40, limit plate. Detailed Description of the Preferred Embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Refer to Figure 1-7, an injection mold for an automobile cover plate that is easy to replace, including an installation bracket 1. A driving component is arranged inside the installation bracket 1. An internal threaded pipe 6 is arranged inside the installation bracket 1 through the driving component. A fixed seat 7 is installed at the bottom end of the internal threaded pipe 6 through a bearing, and the fixed seat 7 is fixedly installed on the lower side wall of the installation bracket 1. A screw rod 8 is arranged inside the internal threaded pipe 6 in a threaded manner. A guiding component is arranged on the surface of the screw rod 8. An installation shell 12 is fixedly arranged inside the installation bracket 1. A locking component is arranged inside the installation shell 12. An installation frame 17 is arranged in a lapping manner on the surface of the installation shell 12. A lower mold 21 is fixedly arranged at the top of the installation frame 17. A connecting frame 25 is fixedly arranged at the top of the installation bracket 1. A hydraulic push rod 26 is fixedly arranged at the top of the connecting frame 25. The output end of the hydraulic push rod 26 is fixedly provided with a moving plate 27. The moving plate 27 is slidably connected with the connecting frame 25. A fixing component is arranged at the top of the moving plate 27. An upper mold is fixedly arranged at the bottom of the moving plate 27 through fixation. The fixing component includes a fixing shell 28 fixedly installed at the top of the moving plate 27. A sliding plate 30 is slidably arranged inside. A fixing spring 31 is fixedly arranged between the opposite surfaces of the sliding plates 30. A fixing column 32 is fixedly arranged on one side of the sliding plate 30 away from the fixing spring 31. A fixing plate 33 is slidably arranged on the surface of the fixing column 32. The fixing plate 33 is slidably connected with the moving plate 27. The fixing plate 33 is fixedly installed on the top of the upper mold. A pulling plate 29 is fixedly arranged on the front side of the left sliding plate 30. A limiting component is arranged on the surface of the pulling plate 29. A lower toothed plate 34 is fixedly arranged on the rear side of the left sliding plate 30. A gear 35 is arranged in a meshing manner on the surface of the lower toothed plate 34. An installation shaft 36 is fixedly arranged inside the gear 35. The installation shaft 36 is rotatably arranged inside the fixing shell 28. An upper toothed plate 37 is arranged in a meshing manner on the surface of the gear 35. The upper toothed plate 37 is fixedly installed on the rear side of the right sliding plate 30. The pulling plate 29 drives the lower toothed plate 34 through the sliding plate 30 to push the gear 35 to rotate, and drives the upper toothed plate 37 to move through the gear 35, so that the two sliding plates 30 move towards the middle of the fixing shell 28 at the same time, enabling the sliding plate 30 to drive the fixing column 32 to move out of the fixing plate 33, taking out the fixing plate 33 from the moving plate 27 through the upper mold, inserting the fixing plate 33 into the moving plate 27 through the replaced upper mold, and driving the sliding plate 30 to drive the fixing column 32 to insert into the fixing plate 33 through the rebounding action of the fixing spring 31, so that the fixing plate 33 fixes the upper mold, thus completing the process of quickly replacing the upper mold. The driving component includes a driving motor 2 fixedly installed on the lower side wall of the installation bracket 1. The output end of the driving motor 2 is fixedly provided with a worm 3. The front end of the worm 3 is installed through a bearing on an installation seat 4, and the installation seat 4 is fixedly installed on the lower side wall of the installation bracket 1. A worm gear 5 is arranged in a meshing manner on the surface of the worm 3. The worm gear 5 is fixedly installed on the surface of the internal threaded pipe 6. The guiding component includes a guiding plate 9 fixedly installed on the surface of the screw rod 8. A guiding column 10 is fixedly arranged at the bottom of the guiding plate 9. A guiding sleeve 11 is slidably arranged on the surface of the guiding column 10. The guiding sleeve 11 is fixedly installed on the lower side wall of the installation bracket 1.The locking component includes a connecting plate 13 fixedly installed inside the mounting bracket 1. A sliding rod 14 is slidably arranged inside the connecting plate 13. An end portion of the sliding rod 14 is fixedly provided with a mounting plate 15. A locking spring is fixedly arranged on a side of the mounting plate 15 close to the connecting plate 13. The locking spring is fixedly connected to the connecting plate 13. A locking plate 16 is fixedly arranged on a side surface of the mounting plate 15. The locking plate 16 is slidably connected to both the mounting housing 12 and the mounting frame 17. An end of the sliding rod 14 away from the mounting plate 15 is fixedly provided with a trapezoidal block 18. A wedge-shaped block 19 is lapped on a surface of the trapezoidal block 18. The wedge-shaped block 19 is fixedly installed at a top end of the screw rod 8. A pushing block 20 is fixedly arranged on a top of the wedge-shaped block 19. By driving the motor 2 to drive the internal thread tube 6 to rotate through the worm 3 and the worm gear 5, the screw rod 8 drives the guide post 10 to slide downward inside the guide sleeve 11 through the guide plate 9, so that the screw rod 8 drives the wedge-shaped block 19 and the pushing block 20. The locking spring drives the locking plate 16 to move out of the mounting frame 17 through the mounting plate 15, pulls the lower die 21 to drive the mounting frame 17 to separate from the mounting housing 12. By replacing the lower die 21 to drive the mounting frame 17 to insert into the surface of the mounting housing 12, the driving motor 2 drives the internal thread tube 6 to reverse through the worm 3 and the worm gear 5, so that the screw rod 8 pushes the two trapezoidal blocks 18 to open through the wedge-shaped block 19 and the pushing block 20. The trapezoidal block 18 pushes the locking plate 16 to insert into the mounting frame 17 through the sliding rod 14 and the mounting plate 15, so that the locking plate 16 locks the mounting frame 17, and the position of the lower die 21 can be locked, and the rapid replacement process of the lower die 21 can be completed.

[0029] Specifically, a support block 22 is fixedly arranged on a top of the mounting bracket 1. A connection hole 23 penetrates through a top of the support block 22. A support column 24 is slidably arranged inside the connection hole 23. The support column 24 is fixedly installed at a bottom of the lower die 21. When the lower die 21 drives the mounting frame 17 to contact with the mounting housing 12 and the mounting bracket 1, the lower die 21 drives the support column 24 to insert into the connection hole 23, so that the lower die 21 contacts with the support block 22, which is convenient for supporting the four corners of the lower die 21 and making the lower die 21 placed more stably.

[0030] Specifically, the limiting component includes a connecting shaft 38 fixedly installed on the surface of the pulling plate 29. A limiting ring 39 is rotatably arranged on the surface of the connecting shaft 38. A limiting plate 40 is arranged to the right of the limiting ring 39. The limiting plate 40 is fixedly installed on the front side of the fixed housing 28. After the fixed housing 28 drives the fixed column 32 to move out of the fixed plate 33 through the sliding plate 30, the limiting ring 39 is pulled to rotate on the surface of the connecting shaft 38, so that the limiting ring 39 contacts the limiting plate 40. The limiting plate 40 limits the limiting ring 39, and the limiting ring 39 limits the position of the pulling plate 29 through the connecting shaft 38, thereby limiting the position of the sliding plate 30, avoiding the re-insertion of the moved-out fixed column 32 into the fixed plate 33 under the action of the rebound of the fixed spring 31, facilitating the replacement of the upper mold, and avoiding the situation where it is necessary to continuously hold the pulling plate 29 to prevent the sliding plate 30 from pushing the fixed column 32 into the fixed plate 33 under the action of the rebound of the fixed spring 31.

[0031] During use: When it is necessary to replace the lower mold 21 and the upper mold, the driving motor 2 drives the output end to drive the worm 3 to rotate. The worm 3 drives the meshing worm wheel 5 to rotate. The worm wheel 5 drives the internal thread tube 6 to rotate inside the fixed seat 7 through the bearing. The internal thread tube 6 drives the screw rod 8 to move downward. The screw rod 8 drives the guide post 10 to slide downward inside the guide sleeve 11 through the guide plate 9, so that the screw rod 8 drives the wedge block 19 to move downward, and the wedge block 19 drives the push block 20 to move downward. Through the resilience of the locking spring, the mounting plate 15 is pulled closer to the connecting plate 13, and the sliding rod 14 is driven by the mounting plate 15 to slide inside the connecting plate 13, so that the sliding rod 14 pushes the trapezoidal block 18 closer to the middle of the mounting shell 12, so that the mounting plate 15 drives the locking plate 16 to move out of the mounting frame 17, pulls the lower mold 21 to drive the mounting frame 17 to separate from the mounting shell 12. The replaced lower mold 21 drives the mounting frame 17 to be inserted into the surface of the mounting shell 12. Then, the driving motor 2 drives the worm 3 to drive the worm wheel 5 to reverse, so that the internal thread tube 6 drives the screw rod 8 to move upward, so that the screw rod 8 drives the push block 20 to move upward through the wedge block 19, so that the push block 20 pushes the two trapezoidal blocks 18 apart, so that the trapezoidal block 18 contacts the wedge block 19, so that the wedge block 19 pushes the trapezoidal blocks 18 away from each other. The trapezoidal block 18 drives the mounting plate 15 to move through the sliding rod 14, so that the mounting plate 15 pushes the locking plate 16 to be inserted into the mounting frame 17, and the mounting plate 15 stretches the locking spring, so that the locking plate 16 locks the mounting frame 17, and the position of the lower mold 21 can be locked. Then, the pull plate 29 is pulled to drive the sliding plate 30 to move. The sliding plate 30 on the left drives the lower toothed plate 34 to move, so that the lower toothed plate 34 drives the gear 35 to rotate, and the gear 35 drives the upper toothed plate 37 to move, so that the two sliding plates 30 move toward the middle of the fixed shell 28 at the same time, so that the sliding plate 30 drives the fixed column 32 to move out of the fixed plate 33. At the same time, the sliding plate 30 compresses the fixed spring 31. The upper mold takes out the fixed plate 33 from the moving plate 27, and the replaced upper mold inserts the fixed plate 33 into the moving plate 27. Through the resilience of the fixed spring 31, the sliding plate 30 is pushed back to its original position, so that the sliding plate 30 drives the fixed column 32 to be inserted into the fixed plate 33, so that the fixed plate 33 fixes the upper mold.

[0032] Note that, in this document, relational terms such as first and second are used solely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual such relationship or order between these entities or operations. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements but also other elements not expressly listed, or elements that are inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection mold for an automobile cover plate that is convenient for replacement, comprising a mounting bracket (1), characterized in that, A driving component is arranged inside the mounting bracket (1). An internally threaded pipe (6) is arranged inside the mounting bracket (1) through the driving component. A fixed seat (7) is installed at the bottom end of the internally threaded pipe (6) through a bearing. The fixed seat (7) is fixedly installed on the lower side wall of the mounting bracket (1). A screw rod (8) is arranged inside the internally threaded pipe (6) in a threaded manner. A guiding component is arranged on the surface of the screw rod (8). An installation housing (12) is fixedly arranged inside the mounting bracket (1). A locking component is arranged inside the installation housing (12). An installation frame (17) is arranged in a lapping manner on the surface of the installation housing (12). A lower mold (21) is fixedly arranged at the top of the installation frame (17). A connecting frame (25) is fixedly arranged at the top of the mounting bracket (1). A hydraulic push rod (26) is fixedly arranged at the top of the connecting frame (25). A moving plate (27) is fixedly arranged at the output end of the hydraulic push rod (26). The moving plate (27) is slidably connected with the connecting frame (25). A fixing component is arranged at the top of the moving plate (27). An upper mold is fixedly arranged at the bottom of the moving plate (27).

2. The injection mold for an automotive cover plate that is easy to replace according to claim 1, wherein, The driving component includes a driving motor (2) fixedly installed on the lower side wall of the mounting bracket (1). A worm (3) is fixedly arranged at the output end of the driving motor (2). The front end of the worm (3) is installed through a bearing on a mounting seat (4). The mounting seat (4) is fixedly installed on the lower side wall of the mounting bracket (1). A worm gear (5) is meshed on the surface of the worm (3). The worm gear (5) is fixedly installed on the surface of the internally threaded pipe (6).

3. The injection mold for an automotive cover plate that is easy to replace according to claim 1, wherein The guiding component includes a guiding plate (9) fixedly installed on the surface of the screw rod (8). A guiding column (10) is fixedly arranged at the bottom of the guiding plate (9). A guiding sleeve (11) is slidably arranged on the surface of the guiding column (10). The guiding sleeve (11) is fixedly installed on the lower side wall of the mounting bracket (1).

4. The injection mold for an automobile cover plate that is easy to replace according to claim 1, wherein The locking component includes a connecting plate (13) fixedly installed inside the mounting bracket (1). A sliding rod (14) is slidably arranged inside the connecting plate (13). An installation plate (15) is fixedly arranged at the end of the sliding rod (14). A locking spring is fixedly arranged on one side of the installation plate (15) close to the connecting plate (13). The locking spring is fixedly connected with the connecting plate (13). A locking plate (16) is fixedly arranged on the side surface of the installation plate (15). The locking plate (16) is slidably connected with both the installation housing (12) and the installation frame (17). A trapezoidal block (18) is fixedly arranged at the end of the sliding rod (14) far away from the installation plate (15). A wedge-shaped block (19) is arranged in a lapping manner on the surface of the trapezoidal block (18). The wedge-shaped block (19) is fixedly installed at the top end of the screw rod (8). A pushing block (20) is fixedly arranged at the top of the wedge-shaped block (19).

5. The injection mold for an automotive cover plate that is easy to replace according to claim 1, wherein, A support block (22) is fixedly arranged at the top of the installation bracket (1). A connection hole (23) penetrates through the top of the support block (22). A support column (24) is slidably arranged inside the connection hole (23). The support column (24) is fixedly installed at the bottom of the lower die (21).

6. The injection mold for an automobile cover plate that is convenient to replace according to claim 1, wherein, The fixing component includes a fixing outer shell (28) fixedly installed at the top of the moving plate (27). A sliding plate (30) is slidably arranged inside. A fixing spring (31) is fixedly arranged between the opposite surfaces of the sliding plate (30). A fixing column (32) is fixedly arranged on one side of the sliding plate (30) away from the fixing spring (31). A fixing plate (33) is slidably arranged on the surface of the fixing column (32). The fixing plate (33) is slidably connected to the moving plate (27). The fixing plate (33) is fixedly installed at the top of the upper die. A pulling plate (29) is fixedly arranged on the front side of the left sliding plate (30). A limiting component is arranged on the surface of the pulling plate (29).

7. The injection mold for an automobile cover plate that is convenient for replacement according to claim 6, wherein, The limiting component includes a connection shaft (38) fixedly installed on the surface of the pulling plate (29). A limiting ring (39) is rotatably arranged on the surface of the connection shaft (38). A limiting plate (40) is arranged to the right of the limiting ring (39). The limiting plate (40) is fixedly installed on the front side of the fixing outer shell (28).

8. The injection mold for an automobile cover plate that is convenient for replacement according to claim 6, wherein, A lower toothed plate (34) is fixedly arranged on the rear side of the left sliding plate (30). A gear (35) is meshed on the surface of the lower toothed plate (34). A mounting shaft (36) is fixedly arranged inside the gear (35). The mounting shaft (36) is rotatably arranged inside the fixing outer shell (28). An upper toothed plate (37) is meshed on the surface of the gear (35). The upper toothed plate (37) is fixedly installed on the rear side of the right sliding plate (30).

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