Forming mold for automobile tire production

Abstract

The invention relates to the technical field of tire forming molds, in particular to an automobile tire production forming mold which comprises a bottom plate, a working platform is fixedly mounted above the bottom plate, a rotatable bearing plate is arranged at the center of the upper portion of the working platform, and a mold assembly and a cutting mechanism are arranged above the working platform. A collecting groove is formed between the bottom plate and the working platform, an opening of the collecting groove faces upwards, a discharging opening is formed in the center of the working platform, the bearing plate covers the discharging opening, and a lifting structure is arranged below the bearing plate. According to the forming mold for automobile tire production, by arranging the cutting piece, after a tire is formed, the edge of the tire can be trimmed, the tire does not need to be taken down from the mold and then trimmed manually, trimmed waste can be automatically collected, the workload of workers can be reduced, and the production efficiency is improved. And the cleanliness of the working environment is guaranteed, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of tire forming mold technology, specifically a forming mold for automobile tire production. Background Technology

[0002] Car tires are made of rubber, which can be injection molded using a tire mold. The tire mold consists of eight mold plates that are arranged in a ring shape. The rubber cools and solidifies in the injection space inside the eight mold plates.

[0003] After the existing tires are injection molded, the edges of the tires need to be trimmed manually. The waste material from the trimming usually falls directly to the ground. Workers need to collect the waste material from the ground regularly. When the waste material is piled up on the ground, it is easy for workers to move the waste material when they walk, causing the waste material to be scattered everywhere, affecting the cleanliness of the tire production environment, and increasing the workload of the workers. Summary of the Invention

[0004] The purpose of this invention is to provide a molding die for automobile tire production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a molding die for automobile tire production, comprising a base plate, a working platform fixedly mounted on the top of the base plate, a rotatable support plate disposed at the center of the top of the working platform, a die assembly and a cutting mechanism disposed above the working platform, the number of the die assembly and the cutting mechanism being several sets, the die assembly and the cutting mechanism being arranged alternately in sequence, the die assembly comprising a frame, the frame being connected to the working platform via a moving mechanism, a die shell being detachably mounted on the side of the frame near the support plate, a die body being slidably penetrated inside the die shell, the die body being connected to the frame via an adjusting mechanism, a collecting groove being disposed between the base plate and the working platform, the collecting groove opening upwards, a discharge port being provided at the center of the working platform, the support plate covering the discharge port, and a lifting structure being disposed below the support plate.

[0006] Preferably, the cutting mechanism includes a movable block, on which cutting components can be detachably installed at both the upper and lower ends of the movable block near the support plate. A fixed plate is fixedly installed below the movable block. The working platform has an internal movable groove, which is slidably connected to the fixed plate. The movable block is connected to the frame through a translation structure.

[0007] Preferably, the translation structure includes a crossbar, which is fixedly installed inside the movable groove. The crossbar is slidably connected to a fixed plate. A second spring is movably sleeved on the outer surface of the crossbar. The second spring is fixedly connected to the fixed plate. A roller is rotatably installed above the work platform. A connector is wound around the outer surface of the roller. One end of the connector is fixedly connected to the movable block, and the other end of the connector is fixedly connected to the frame.

[0008] Preferably, the adjustment mechanism includes a support plate located on the side of the mold body away from the mold shell. The support plate is connected to a frame via an elastic component. A groove is provided on the side of the support plate near the mold body. A rod is fixedly installed inside the groove. The rod has an arc-shaped design and is slidably connected to the mold body.

[0009] Preferably, the elastic component includes a slider and a groove. The groove is formed inside the frame, and the slider is slidably installed inside the groove. The slider and the support plate are detachably connected. A sliding rod is fixedly installed inside the groove. The sliding rod and the slider are slidably connected. A first spring is movably sleeved on the outer surface of the sliding rod. The first spring and the slider are fixedly connected.

[0010] Preferably, the moving mechanism includes a guide block and a guide groove, the guide groove is formed inside the working platform, the guide block is slidably installed inside the guide groove, the guide block and the slider are fixedly connected, and a power structure is provided below the guide block.

[0011] Preferably, the power structure includes an electric push rod, which is fixedly installed below the base plate. The output end of the electric push rod passes through the base plate and extends above it. A movable plate is fixedly installed at the output end of the electric push rod. The movable plate is rotatably connected to the lower part of the collection trough. A push plate is rotatably installed on the outer surface of the movable plate. The end of the push plate away from the movable plate is rotatably connected to a guide block.

[0012] Preferably, the lifting structure includes a sleeve that rotatably passes through a movable plate, the sleeve is fixedly connected to a collecting trough, the lower end of the sleeve passes through a base plate and extends to the bottom of the base plate, and a column is slidably installed inside the upper part of the sleeve, the column and a support plate are fixedly connected.

[0013] Preferably, an mounting plate is fixedly installed on the outer surface of the sleeve, a second gear is sleeved on the outer surface of the sleeve, a rotating structure is provided on the outer surface of the second gear, the second gear is rotatably connected to the base plate, an installation groove is provided inside the second gear, and the installation groove is slidably connected to the mounting plate.

[0014] Preferably, the rotating structure includes a motor, which is fixedly installed below the base plate. The output end of the motor passes through the base plate and extends above it. A first gear is fixedly installed at the output end of the motor. The first gear is rotatably connected to the base plate, and the first gear meshes with a second gear.

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

[0016] 1. By setting up cutting components, the tire edges can be trimmed after the tire is formed, eliminating the need to remove the tire from the mold and trim it manually. Furthermore, the trimming waste can be automatically collected, which helps reduce the workload of workers, maintains a clean working environment, and improves production efficiency.

[0017] 2. By setting up a collection trough, with the cooperation of the sleeve and the column, the collection trough can contact the bottom of the work platform. At this time, with the cooperation of the blower mechanism, the waste on the work platform can fall into the collection trough better, which is conducive to improving the waste collection efficiency.

[0018] 3. By setting up a mold shell and a mold body, and with the cooperation of the frame and the slider, the mold shell and mold body can be replaced as needed, thereby enabling the processing of tires with different patterns, making the device more widely applicable. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

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

[0021] Figure 3 For the present invention Figure 2 Enlarged view of point A;

[0022] Figure 4 This is a cross-sectional view of the structure from another perspective of the present invention;

[0023] Figure 5 This is a partial structural cross-sectional view of the present invention;

[0024] Figure 6 For the present invention Figure 5 Another perspective structural cross-sectional view;

[0025] Figure 7 This is a partial structural cross-sectional view of the present invention;

[0026] Figure 8 This is a partial structural exploded view of the present invention.

[0027] The components represented by each number in the attached diagram are listed below: 1. Base plate; 2. Working platform; 3. Support plate; 4. Frame; 5. Mold shell; 6. Mold body; 7. Support plate; 8. Groove; 9. Rod; 10. Slider; 11. Slide groove; 12. Slide rod; 13. Spring No. 1; 14. Moving plate; 15. Push plate; 16. Guide block; 17. Guide groove; 18. Electric push rod; 19. Sleeve; 20. Column; 21. Discharge port; 22. Collection groove; 23. Gear No. 1; 24. Gear No. 2; 25. Mounting plate; 26. Mounting groove; 27. Motor; 28. Fixing plate; 29. ​​Cutting part; 30. Movable block; 31. Movable groove; 32. Crossbar; 33. Spring No. 2; 34. Connecting part; 35. Roller. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-8 The diagram shows a molding die for automobile tire production, including a base plate 1. A work platform 2 is fixedly installed on the top of the base plate 1. A rotatable support plate 3 is set at the center of the top of the work platform 2. A mold assembly and a cutting mechanism are set on the top of the work platform 2. There are several sets of mold assemblies and cutting mechanisms, which are arranged alternately. The mold assembly includes a frame 4, which is connected to the work platform 2 through a moving mechanism. A mold shell 5 is detachably installed on the side of the frame 4 near the support plate 3. A mold body 6 slides through the inside of the mold shell 5. The mold body 6 is connected to the frame 4 through an adjusting mechanism. A collection groove 22 is set between the base plate 1 and the work platform 2. The collection groove 22 opens upward. A discharge port 21 is opened at the center of the work platform 2. The support plate 3 covers the discharge port 21. A lifting structure is set below the support plate 3.

[0030] Specifically, the green tire is placed above the support plate 3. Initially, the support plate 3 is in contact with the working platform 2. The moving mechanism, via the frame 4, moves the mold assembly towards the green tire. Simultaneously, the cutting mechanism moves away from the green tire. The mold shell 5 stops moving after contacting the outer surface of the green tire. At this point, the moving mechanism moves the mold body 6, allowing it to penetrate the mold shell 5. Subsequently, the green tire undergoes vulcanization. After vulcanization, the tire remains above the support plate 3. The moving mechanism then separates the mold shell 5 and mold body 6 from the tire. Simultaneously, the cutting mechanism moves towards the tire, supporting the green tire... Plate 3 drives the tire to rotate, enabling the cutting mechanism to cut the edge of the tire. The cut waste falls above the working platform 2. The lifting structure drives the support plate 3 to move upward, pushing the tire out from the middle of the mold. At the same time, the waste above the working platform 2 can fall into the collection tank 22 through the discharge port 21, which facilitates the centralized collection of waste, helps to maintain a clean working environment, and reduces the workload of workers. In this embodiment, a blower mechanism can be used to cool the tire and blow the waste from above the working platform 2 into the collection tank 22. The blower mechanism is existing technology and will not be explained in detail.

[0031] The cutting mechanism includes a movable block 30. Cutting parts 29 can be detachably installed on both the upper and lower ends of the movable block 30 near the support plate 3. A fixed plate 28 is fixedly installed below the movable block 30. The working platform 2 has a movable groove 31 inside. The movable groove 31 and the fixed plate 28 are slidably connected. The movable block 30 is connected to the frame 4 through a translation structure.

[0032] The translation structure includes a crossbar 32, which is fixedly installed inside the movable groove 31. The crossbar 32 and the fixed plate 28 are slidably connected. A second spring 33 is movably sleeved on the outer surface of the crossbar 32. The second spring 33 and the fixed plate 28 are fixedly connected. A roller 35 is rotatably installed above the working platform 2. A connector 34 is wound around the outer surface of the roller 35. One end of the connector 34 is fixedly connected to the movable block 30, and the other end of the connector 34 is fixedly connected to the frame 4.

[0033] Specifically, with the cooperation of roller 35 and connector 34, when frame 4 moves toward support plate 3, frame 4 can pull movable block 30 away from support plate 3 through connector 34. Movable block 30 drives cutting piece 29 to move synchronously. At the same time, movable block 30 can drive fixed plate 28 to slide inside movable groove 31. Under the action of crossbar 32, spring 33 is deformed by force. When frame 4 moves away from support plate 3, spring 33 can push movable block 30 to move closer to support plate 3.

[0034] The adjustment mechanism includes a support plate 7, which is located on the side of the mold body 6 away from the mold shell 5. The support plate 7 is connected to the frame 4 through an elastic component. A groove 8 is provided on the side of the support plate 7 close to the mold body 6. A rod 9 is fixedly installed inside the groove 8. The rod 9 has an arc design and is slidably connected to the mold body 6.

[0035] The elastic component includes a slider 10 and a groove 11. The groove 11 is opened inside the frame 4. The slider 10 is slidably installed inside the groove 11. The slider 10 and the support plate 7 are detachably connected. A slide rod 12 is fixedly installed inside the groove 11. The slide rod 12 and the slider 10 are slidably connected. A first spring 13 is movably sleeved on the outer surface of the slide rod 12. The first spring 13 and the slider 10 are fixedly connected.

[0036] Specifically, when the frame 4 moves, it drives the mold shell 5 to move synchronously. In the initial state, the support plate 7 does not contact the mold shell 5. When the mold shell 5 contacts the outer surface of the green tire and stops moving, the slider 10 drives the support plate 7 to move towards the mold shell 5 inside the slide groove 11. Under the action of the slide rod 12, the first spring 13 is deformed by force. During this process, the mold body 6 can slide on the outer surface of the rod 9 installed inside the groove 8, so that the mold body 6 can observe the mold shell 5. When the tire is processed, the frame 4 drives the mold shell 5 to move. Under the elastic force of the first spring 13, the support plate 7 separates from the mold shell 5. At this time, the support plate 7 can drive the mold body 6 to move. It should be noted that the mold shell 5 and the frame 4 are detachable, and the slider 10 and the support plate 7 are detachable, which makes it easy to replace different mold shells 5 and mold bodies 6, making the application range of this device wider.

[0037] The moving mechanism includes a guide block 16 and a guide groove 17. The guide groove 17 is opened inside the working platform 2. The guide block 16 is slidably installed inside the guide groove 17. The guide block 16 and the slider 10 are fixedly connected. A power structure is provided below the guide block 16.

[0038] The power structure includes an electric push rod 18, which is fixedly installed below the base plate 1. The output end of the electric push rod 18 passes through the base plate 1 and extends to the top of the base plate 1. A movable plate 14 is fixedly installed at the output end of the electric push rod 18. The movable plate 14 is rotatably connected to the lower part of the collection tank 22. A push plate 15 is rotatably installed on the outer surface of the movable plate 14. The end of the push plate 15 away from the movable plate 14 is rotatably connected to the guide block 16.

[0039] Specifically, the electric push rod 18 is connected to an external power source. The electric push rod 18 drives the moving plate 14 to move up and down. When the moving plate 14 moves upward, it can drive the guide block 16 to move away from the support plate 3 inside the guide groove 17 through the push plate 15. When the moving plate 14 moves downward, the guide block 16 moves closer to the support plate 3. The moving plate 14 can drive the collection groove 22 to move synchronously.

[0040] The lifting structure includes a sleeve 19, which rotates through the moving plate 14. The sleeve 19 is fixedly connected to the collecting groove 22. The lower end of the sleeve 19 passes through the base plate 1 and extends to the bottom of the base plate 1. A column 20 is slidably installed inside the upper part of the sleeve 19. The column 20 is fixedly connected to the support plate 3.

[0041] Specifically, the moving plate 14 drives the collecting trough 22 to move, and the collecting trough 22 drives the sleeve 19 to move synchronously. When the collecting trough 22 moves upward, the sleeve 19 moves upward on the outer surface of the column 20. When the upper end face of the sleeve 19 contacts the lower end face of the support plate 3, the collecting trough 22 continues to move upward. At this time, the collecting trough 22 can drive the support plate 3 to move upward synchronously, so that the support plate 3 is separated from the working platform 2, and the waste on the working platform 2 can fall into the interior of the collecting trough 22 through the discharge port 21.

[0042] A mounting plate 25 is fixedly installed on the outer surface of the sleeve 19. A second gear 24 is sleeved on the outer surface of the sleeve 19. A rotating structure is provided on the outer surface of the second gear 24. The second gear 24 is rotatably connected to the base plate 1. An installation groove 26 is provided inside the second gear 24. The installation groove 26 is slidably connected to the mounting plate 25.

[0043] The rotating structure includes a motor 27, which is fixedly installed below the base plate 1. The output end of the motor 27 passes through the base plate 1 and extends to the top of the base plate 1. A first gear 23 is fixedly installed at the output end of the motor 27. The first gear 23 is rotatably connected to the base plate 1, and the first gear 23 meshes with the second gear 24.

[0044] Specifically, the motor 27 is connected to an external power source, and the motor 27 drives the first gear 23 to rotate. Since the first gear 23 and the second gear 24 mesh, the second gear 24 can rotate. With the cooperation of the mounting plate 25 and the mounting groove 26, the second gear 24 can drive the sleeve 19 to rotate, thereby providing power for the rotation of the support plate 3. It should be noted that the column 20 is slidably connected to the sleeve 19 through a guide rail or other limiting structure, so the sleeve 19 can drive the column 20 to rotate when it rotates.

[0045] Working principle: The green tire is placed on top of the support plate 3. In the initial state, the support plate 3 is in contact with the working platform 2. The electric push rod 18 is connected to an external power source. The electric push rod 18 drives the moving plate 14 to move up and down. When the moving plate 14 moves upward, it can drive the guide block 16 to move away from the support plate 3 inside the guide groove 17 through the push plate 15. When the moving plate 14 moves downward, the guide block 16 moves closer to the support plate 3.

[0046] Under the elastic force of spring 13, guide block 16 drives frame 4 to move via slider 10. When frame 4 moves, it drives mold shell 5 to move synchronously. Initially, support plate 7 does not contact mold shell 5. When mold shell 5 contacts the outer surface of green tire and stops moving, slider 10 drives support plate 7 to move towards mold shell 5 inside slide groove 11. Under the action of slide rod 12, spring 13 deforms under force. During this process, mold body 6 can slide on the outer surface of rod 9 installed inside groove 8, allowing mold body 6 to observe mold shell 5. After tire processing is completed, frame 4 drives mold shell 5 to move. Under the elastic force of spring 13, support plate 7 separates from mold shell 5. At this time, support plate 7 can drive mold body 6 to move. It should be noted that mold shell 5 and frame 4 are detachable, and slider 10 and support plate 7 are detachable, making it easy to replace different mold shell 5 and mold body 6.

[0047] With the cooperation of roller 35 and connector 34, when frame 4 moves toward support plate 3, frame 4 can pull movable block 30 away from support plate 3 through connector 34. Movable block 30 drives cutting piece 29 to move synchronously. At the same time, movable block 30 can drive fixed plate 28 to slide inside movable groove 31. Under the action of crossbar 32, spring 33 is deformed by force. When frame 4 moves away from support plate 3, spring 33 can push movable block 30 to move closer to support plate 3.

[0048] The moving plate 14 drives the collecting groove 22 to move, and the collecting groove 22 drives the sleeve 19 to move synchronously. When the collecting groove 22 moves upward, the sleeve 19 moves upward on the outer surface of the column 20. When the upper end face of the sleeve 19 contacts the lower end face of the support plate 3, the moving plate 14 pauses. At this time, the mold body 6 separates from the tire, and the motor 27 is connected to the external power supply. The motor 27 drives the first gear 23 to rotate. Since the first gear 23 and the second gear 24 mesh, the second gear 24 can rotate. With the cooperation of the mounting plate 25 and the mounting groove 26, the second gear 24 can drive the sleeve 19 to rotate, thereby providing power for the rotation of the support plate 3. It should be noted that the column 20 is slidably connected to the sleeve 19 through the guide rail or other limiting structure. Therefore, when the sleeve 19 rotates, it can drive the column 20 to rotate. The support plate 3 drives the tire to rotate. At this time, the cutting part 29 can trim the edge of the tire.

[0049] After trimming, the moving plate 14 drives the collection trough 22 to continue moving upward. At this time, the collection trough 22 can drive the support plate 3 to move upward synchronously, so that the support plate 3 is separated from the working platform 2, and the waste on the working platform 2 can fall into the inside of the collection trough 22 through the discharge port 21.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A molding die for automobile tire production, comprising a base plate (1), characterized in that: A working platform (2) is fixedly installed above the base plate (1). A rotatable support plate (3) is provided at the center of the top of the working platform (2). A mold assembly and a cutting mechanism are provided above the working platform (2). The mold assembly and the cutting mechanism are in several groups. The mold assembly and the cutting mechanism are arranged alternately. The mold assembly includes a frame (4). The frame (4) is connected to the working platform (2) through a moving mechanism. A mold shell (5) is detachably installed on the side of the frame (4) near the support plate (3). A mold body (6) slides through the inside of the mold shell (5). The mold body (6) is connected to the frame (4) through an adjusting mechanism. A collection groove (22) is provided between the base plate (1) and the working platform (2). The collection groove (22) opens upward. A discharge port (21) is provided at the center of the working platform (2). The support plate (3) covers the discharge port (21). A lifting structure is provided below the support plate (3).

2. The molding die for automobile tire production according to claim 1, characterized in that: The cutting mechanism includes a movable block (30), on which cutting components (29) can be detachably installed at both ends of the movable block (30) near the support plate (3). A fixed plate (28) is fixedly installed below the movable block (30). The working platform (2) has an internal movable groove (31), which is slidably connected to the fixed plate (28). The movable block (30) is connected to the frame (4) through a translation structure.

3. The molding die for automobile tire production according to claim 2, characterized in that: The translation structure includes a crossbar (32), which is fixedly installed inside the movable groove (31). The crossbar (32) and the fixed plate (28) are slidably connected. A second spring (33) is movably sleeved on the outer surface of the crossbar (32). The second spring (33) and the fixed plate (28) are fixedly connected. A roller (35) is rotatably installed above the working platform (2). A connector (34) is wound around the outer surface of the roller (35). One end of the connector (34) is fixedly connected to the movable block (30), and the other end of the connector (34) is fixedly connected to the frame (4).

4. The molding die for automobile tire production according to claim 1, characterized in that: The adjustment mechanism includes a support plate (7), which is located on the side of the mold body (6) away from the mold shell (5). The support plate (7) is connected to the frame (4) through an elastic component. A groove (8) is provided on the side of the support plate (7) close to the mold body (6). A rod (9) is fixedly installed inside the groove (8). The rod (9) is arc-shaped and is slidably connected to the mold body (6).

5. A molding die for automobile tire production according to claim 4, characterized in that: The elastic component includes a slider (10) and a groove (11). The groove (11) is opened inside the frame (4). The slider (10) is slidably installed inside the groove (11). The slider (10) and the support plate (7) are detachably connected. A slide rod (12) is fixedly installed inside the groove (11). The slide rod (12) and the slider (10) are slidably connected. A first spring (13) is movably sleeved on the outer surface of the slide rod (12). The first spring (13) and the slider (10) are fixedly connected.

6. A molding die for automobile tire production according to claim 5, characterized in that: The moving mechanism includes a guide block (16) and a guide groove (17). The guide groove (17) is opened inside the working platform (2). The guide block (16) is slidably installed inside the guide groove (17). The guide block (16) and the slider (10) are fixedly connected. A power structure is provided below the guide block (16).

7. A molding die for automobile tire production according to claim 6, characterized in that: The power structure includes an electric push rod (18), which is fixedly installed below the base plate (1). The output end of the electric push rod (18) passes through the base plate (1) and extends to the top of the base plate (1). A movable plate (14) is fixedly installed at the output end of the electric push rod (18). The movable plate (14) is rotatably connected to the bottom of the collection trough (22). A push plate (15) is rotatably installed on the outer surface of the movable plate (14). The end of the push plate (15) away from the movable plate (14) is rotatably connected to the guide block (16).

8. A molding die for automobile tire production according to claim 7, characterized in that: The lifting structure includes a sleeve (19), which rotates through the moving plate (14). The sleeve (19) is fixedly connected to the collecting groove (22). The lower end of the sleeve (19) passes through the bottom plate (1) and extends to the bottom of the bottom plate (1). A column (20) is slidably installed on the upper part of the sleeve (19). The column (20) is fixedly connected to the support plate (3).

9. A molding die for automobile tire production according to claim 8, characterized in that: An mounting plate (25) is fixedly installed on the outer surface of the sleeve (19). A second gear (24) is sleeved on the outer surface of the sleeve (19). A rotating structure is provided on the outer surface of the second gear (24). The second gear (24) is rotatably connected to the base plate (1). An installation groove (26) is provided inside the second gear (24). The installation groove (26) is slidably connected to the mounting plate (25).

10. A molding die for automobile tire production according to claim 9, characterized in that: The rotating structure includes a motor (27), which is fixedly installed below the base plate (1). The output end of the motor (27) passes through the base plate (1) and extends to the top of the base plate (1). A first gear (23) is fixedly installed at the output end of the motor (27). The first gear (23) is rotatably connected to the base plate (1), and the first gear (23) meshes with the second gear (24).

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