Bending machine for U-shaped headrest framework of automobile seat
By designing automated bending and cutting mechanisms and replaceable guide blocks, the problem that existing equipment cannot cut off and adapt to raw materials of different sizes is solved, achieving efficient production and flexible adaptability.
Patent Information
- Application Number
- CN202422139627.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The existing U-shaped headrest skeleton bending machines for car seats cannot cut off the bent raw materials, and the guide block cannot adapt to raw materials of different sizes, resulting in low production efficiency and insufficient equipment flexibility.
A bending mechanism including a cylinder, a bend, a cutting block and a replaceable guide block is designed. Automatic bending and cutting is achieved through the linkage between the cylinder and the motor, and the mounting mechanism and the guide mechanism are adapted to raw materials of different sizes.
Improve production efficiency, reduce manual operation, enhance equipment flexibility and adaptability, and ensure product quality consistency and production efficiency.
Smart Images
Figure CN223210260U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bending a U-shaped headrest frame of an automobile seat, and more particularly to a bending machine for a U-shaped headrest frame of an automobile seat. Background Art
[0002] In the existing technology, a U-shaped headrest frame bending machine for automobile seats is a device specifically used to bend the frame of automobile seat headrests. Existing U-shaped headrest frame bending machines for automobile seat seats have certain functional limitations. These devices mainly focus on bending operations and can bend raw materials such as metal tubes or bars into the required shape of the U-shaped headrest frame. However, once the bending process is completed, the equipment cannot directly cut the bent raw materials. This means that additional equipment or steps are required in the production process to complete the cutting work, which not only increases production costs but also reduces production efficiency.
[0003] Existing U-shaped headrest frame bending machines for automotive seats are typically equipped with guide blocks to guide the position and direction of the raw material during the bending process. However, a problem with the existing technology is that these guide blocks are often difficult to replace or adjust to accommodate materials of different sizes. This fixed nature limits the machine's ability to produce headrest frames of varying specifications, resulting in a lack of flexibility when processing diverse raw materials, thus restricting its application in diverse production environments.
[0004] The existing technology generally lacks a guiding mechanism that can adapt to raw materials of different sizes. Such a guiding mechanism is crucial to improving the production adaptability and flexibility of the equipment. Due to the lack of such a mechanism, when production needs change and raw materials of different sizes need to be processed, the equipment operator often needs to spend extra time and energy to make adjustments, and may even need to stop the machine for modification. This undoubtedly increases the complexity and cost of production, and affects production efficiency and equipment utilization. Therefore, the development of a guiding mechanism that can adapt to raw materials of various sizes is of great significance to improving the performance and market competitiveness of the automobile seat U-shaped headrest frame bending machine. Utility Model Content
[0005] (1) Technical problems solved
[0006] In response to the problems existing in the prior art, the utility model provides a U-shaped headrest frame bending machine for automobile seats to solve the technical problems mentioned in the background technology, such as the inability to cut the bent raw materials and the inability to replace the guide blocks, and the lack of a guide mechanism that can adapt to raw materials of different sizes.
[0007] (2) Technical solution
[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a U-shaped headrest frame bending machine for automobile seats, comprising a mounting frame, a bending mechanism being provided on the mounting frame, the bending mechanism comprising a cylinder, a bending head, a first motor, a transmission shaft, a connecting rod, a cutting block and a guide block, the cylinder being provided on the mounting frame, the bending head being provided on the mounting frame and connected to the cylinder, the first motor being provided at the bottom end of the mounting frame, the transmission shaft being provided on the mounting frame and connected to the first motor, the connecting rod being provided on the transmission shaft, the cutting block being provided at the top end of the connecting rod, the guide block being provided on the mounting frame, the guide A clamping mechanism is provided on the block, and the clamping mechanism includes a clamping rod, a clamping groove, a clamping sleeve, a clamping block, a sliding sleeve, a control sleeve, an inclination slope, an outer rack, an inner rack and a gear. The clamping rod is arranged on the guide block, the clamping groove is arranged on the clamping rod, the clamping sleeve is arranged on the clamping rod, the clamping block is arranged on the clamping sleeve, the sliding sleeve is arranged on the outer wall of the clamping sleeve, the inclination slope is arranged on the outside of the sliding sleeve, the control sleeve is arranged on the outside of the sliding sleeve, the outer rack is arranged on the inside of the control sleeve, the inner rack is arranged on the outside of the sliding sleeve, and the gear is arranged on the clamping sleeve and meshes with the inner rack and the outer rack.
[0009] The utility model is further configured such that the top end of the cylinder is rotatably mounted on the top end of the mounting frame, the two ends of the bending head are rotatably connected to the mounting frame and the telescopic end of the cylinder respectively, the two ends of the connecting rod are rotatably connected to the transmission shaft and the cutting block respectively, and the cutting block is slidably mounted on the mounting frame, so that the bending and cutting operations can be automated through pneumatic and mechanical linkage, thereby improving production efficiency.
[0010] The utility model is further configured such that the clamping blocks are provided with multiple groups and are all slidably mounted on the clamping sleeves, the slope slopes are provided with multiple groups and are all arranged on both sides of the clamping blocks, and telescopic springs are connected between the multiple groups of clamping blocks and the clamping sleeves. The position of the clamping blocks can be easily adjusted by operating the control sleeves.
[0011] The utility model is further configured such that a slide rod is provided on the clamping sleeve, and the slide rods are provided in multiple groups and are slidably connected to the control sleeve, and return springs are provided on the multiple groups of slide rods to ensure that the control sleeve can return to its original position after operation.
[0012] The utility model is further configured such that a push spring is provided in the clamping sleeve, and a push piece is connected to the bottom end of the push spring, so that the disassembly efficiency of the clamping mechanism is faster.
[0013] The utility model is further configured such that the inner wall of the clamping sleeve is provided with a limiting protrusion, and the limiting protrusions are provided in multiple groups; the outer wall of the clamping rod is provided with a limiting groove, and the limiting grooves are provided in multiple groups and are all adapted to the limiting protrusions, thereby improving the reliability of the equipment and the accuracy of the product.
[0014] The utility model is further configured as follows: a guide mechanism is provided on the mounting frame, and the guide mechanism includes a second motor, a transmission wheel, a guide wheel, an adjustment block, a screw and a handle; the second motor is mounted on the end face of the mounting frame, the transmission wheel is mounted on the output end of the second motor, a plurality of guide wheels are provided and mounted on the side wall of the mounting frame, the adjustment block is provided on the mounting frame, the screw is threadedly mounted on the mounting frame and the bottom end is rotatably connected to the adjustment block, and the handle is mounted on the top end of the screw, thereby ensuring accurate guiding of the raw materials during the conveying process.
[0015] The utility model is further configured such that the adjustment blocks are provided with two groups, both of which are slidably mounted on the mounting frame, and the two groups of adjustment blocks are respectively rotatably provided with guide wheels and transmission wheels, so that the equipment can quickly adapt to the guiding requirements of raw materials of different sizes.
[0016] (3) Beneficial effects
[0017] Compared with the existing technology, the utility model provides a car seat U-shaped headrest frame bending machine, which has the following beneficial effects:
[0018] 1. Beneficial effects of the bending mechanism: The design of the bending mechanism allows for rapid bending of the U-shaped headrest frame of a car seat. The telescopic movement of the cylinder drives the bending head to rotate, thereby achieving bending of the raw material. At the same time, the rotation of the first motor drives the movement of the drive shaft and the connecting rod, allowing the cutting block to slide and perform cutting operations. This design improves production efficiency and reduces the need for manual operation.
[0019] 2. Beneficial effects of the clamping mechanism: The design of the clamping mechanism enables the guide block to be quickly installed and replaced to adapt to raw materials of different sizes. By controlling the movement of the sleeve, the outer rack and gear can be driven to rotate, thereby promoting the movement of the inner rack and the sliding sleeve, so that the clamping block slides along the slope and is clamped in the clamping groove. This design increases the flexibility of the equipment, enables the equipment to adapt to raw materials of various specifications, and improves production efficiency and equipment utilization.
[0020] 3. Beneficial effects of the guide mechanism: The design of the guide mechanism can achieve precise guidance and transportation of raw materials. The rotation of the second motor drives the movement of the transmission wheel and the guide wheel, so that the raw materials can smoothly pass through multiple sets of guide wheels and extend between the transmission wheels. This design helps to ensure the correct position and direction of the raw materials during the bending process, thereby improving the quality and consistency of the products. At the same time, the spacing between the guide wheel and the transmission wheel can be adjusted by adjusting the adjustment block and the screw to accommodate raw materials of different sizes, further enhancing the adaptability and flexibility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1This is a schematic diagram of the overall structure of a U-shaped headrest frame bending machine for automobile seats in the utility model;
[0022] Figure 2 This is a schematic structural diagram of the bending mechanism in the present invention;
[0023] Figure 3 This is a structural diagram of the clamping mechanism in the utility model;
[0024] Figure 4 This is a cross-sectional view of the structure of the clamping mechanism in the present utility model;
[0025] Figure 5 It is a structural diagram of the limiting mechanism in the utility model.
[0026] In the figure: 1. Mounting frame; 2. Cylinder; 3. Bending head; 4. First motor; 5. Transmission shaft; 6. Connecting rod; 7. Cutting block; 8. Guide block; 9. Snap-fit rod; 10. Snap-fit groove; 11. Snap-fit sleeve; 12. Snap-fit block; 13. Sliding sleeve; 14. Control sleeve; 15. Slope; 16. Outer rack; 17. Inner rack; 18. Gear; 19. Telescopic spring; 20. Sliding rod; 21. Return spring; 22. Push spring; 23. Push piece; 24. Limiting protrusion; 25. Limiting groove; 26. Second motor; 27. Transmission wheel; 28. Guide wheel; 29. Adjusting block; 30. Screw; 31. Turning handle. DETAILED DESCRIPTION
[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.
[0029] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.
[0030] See also Figure 1-5A car seat U-shaped headrest frame bending machine includes a mounting frame 1, a bending mechanism is provided on the mounting frame 1, and the bending mechanism includes a cylinder 2, a bending head 3, a first motor 4, a transmission shaft 5, a connecting rod 6, a cutting block 7 and a guide block 8. The cylinder 2 is arranged on the mounting frame 1, the bending head 3 is arranged on the mounting frame 1 and connected to the cylinder 2, the first motor 4 is arranged at the bottom end of the mounting frame 1, the transmission shaft 5 is arranged on the mounting frame 1 and connected to the first motor 4, the connecting rod 6 is arranged on the transmission shaft 5, the cutting block 7 is arranged at the top of the connecting rod 6, the guide block 8 is arranged on the mounting frame 1, and a clamping mechanism is provided on the guide block 8. The clamping mechanism includes a clamping rod 9 and a clamping groove 10. , a clamping sleeve 11, a clamping block 12, a sliding sleeve 13, a control sleeve 14, an inclination slope 15, an outer rack 16, an inner rack 17 and a gear 18, the clamping rod 9 is arranged on the guide block 8, the clamping groove 10 is arranged on the clamping rod 9, the clamping sleeve 11 is arranged on the clamping rod 9, the clamping block 12 is arranged on the clamping sleeve 11, the sliding sleeve 13 is arranged on the outer wall of the clamping sleeve 11, the inclination slope 15 is arranged on the outside of the sliding sleeve 13, the control sleeve 14 is arranged on the outside of the sliding sleeve 13, the outer rack 16 is arranged on the inside of the control sleeve 14, the inner rack 17 is arranged on the outside of the sliding sleeve 13, and the gear 18 is arranged on the clamping sleeve 11 and is engaged with the inner rack 17 and the outer rack 16.
[0031] The top of the cylinder 2 is rotatably mounted on the top of the mounting frame 1. The two ends of the bending head 3 are rotatably connected to the mounting frame 1 and the telescopic end of the cylinder 2. The two ends of the connecting rod 6 are rotatably connected to the transmission shaft 5 and the cutting block 7. The cutting block 7 is slidably mounted on the mounting frame 1. The telescopic movement of the cylinder 2 rotates the mechanism mounted on the top of the mounting frame 1, pushing the bending head 3 to rotate, thereby bending the raw material. The connecting rod 6 connects the transmission shaft 5 and the cutting block 7, allowing the cutting block 7 to slide on the mounting frame 1 to complete the cutting operation.
[0032] There are multiple groups of clamping blocks 12, all of which are slidably mounted on the clamping sleeve 11. There are multiple groups of slopes 15, all of which are arranged on both sides of the clamping block 12. Telescopic springs 19 are connected between the multiple groups of clamping blocks 12 and the clamping sleeve 11. The clamping block 12 is slidably mounted on the clamping sleeve 11. The slopes 15 help the clamping block 12 slide along the clamping sleeve 11 under the action of the telescopic springs 19.
[0033] A sliding rod 20 is provided on the clamping sleeve 11. The sliding rod 20 is provided in multiple groups and is slidably connected to the control sleeve 14. A return spring 21 is provided on each of the multiple groups of sliding rods 20. The sliding rod 20 is slidably connected to the control sleeve 14. The return spring 21 ensures that the control sleeve 14 can return to its original position after operation.
[0034] A push spring 22 is provided in the clamping sleeve 11, and a push piece 23 is connected to the bottom end of the push spring 22. When the clamping mechanism is released, the push piece 23 is pushed out by the elastic rebound of the push spring 22, and the clamping rod 9 is pushed by the push piece 23, which makes the disassembly efficiency faster.
[0035] The inner wall of the clamping sleeve 11 is provided with a limiting protrusion 24, and there are multiple groups of limiting protrusions 24. The outer wall of the clamping rod 9 is provided with a limiting groove 25, and there are multiple groups of limiting grooves 25 and they are all adapted to the limiting protrusions 24. The cooperation between the limiting protrusions 24 and the limiting grooves 25 ensures the accurate position of the clamping block 12, thereby improving the reliability of the equipment and the accuracy of the product.
[0036] The mounting frame 1 is provided with a guide mechanism, which includes a second motor 26, a transmission wheel 27, a guide wheel 28, an adjustment block 29, a screw 30 and a turning handle 31. The second motor 26 is mounted on the end face of the mounting frame 1, the transmission wheel 27 is mounted on the output end of the second motor 26, and the guide wheel 28 is provided with multiple groups mounted on the side wall of the mounting frame 1. The adjustment block 29 is provided on the mounting frame 1, and the screw 30 is threadedly mounted on the mounting frame 1 and the bottom end is rotatably connected to the adjustment block 29. The turning handle 31 is installed at the top of the screw 30. Rotating the turning handle 31 drives the screw 30 to rotate, and the screw 30 rotates and engages with the thread of the mounting frame 1. The screw rod 30 is raised to drive the adjustment block 29 to slide along the mounting frame 1, thereby driving the transmission wheel 27 and the guide wheel 28 rotatably arranged on the adjustment block 29 to move, so that the spacing between the multiple groups of transmission wheels 27 or the multiple groups of guide wheels 28 can be adjusted. After adjusting to the appropriate spacing, the raw material is passed through the multiple groups of guide wheels 28 and extended into the multiple groups of transmission wheels 27. The second motor 26 is started to drive one group of transmission wheels 27 to rotate, and then the raw material can be guided and conveyed, ensuring the accurate guidance of the raw material during the conveying process, reducing the deviation and distortion of the raw material before bending, and thus improving the overall quality of the product.
[0037] There are two groups of adjustment blocks 29, both of which are slidably mounted on the mounting frame 1. The two groups of adjustment blocks 29 are respectively rotatably provided with guide wheels 28 and transmission wheels 27. The sliding installation and rotation setting of the adjustment blocks 29 enable the equipment to quickly adapt to the guiding requirements of raw materials of different sizes, thereby enhancing the flexibility and versatility of the equipment.
[0038] In this embodiment, the bending raw material of the U-shaped headrest frame of the automobile seat is transported to the guide block 8 through the guide mechanism, and then the raw material is transported to the bending head 3. The telescopic end of the cylinder 2 is extended by operating the cylinder 2 to push the bending head 3 to rotate along the mounting frame 1, and the raw material is bent by the protrusion provided on the bending head 3. After the bending operation is completed, the first motor 4 is operated to rotate, driving the transmission shaft 5 to swing repeatedly, and the transmission shaft 5 drives the bottom end of the connecting rod 6 to swing repeatedly, so that the top end of the connecting rod 6 pushes the cutting block 7 to slide along the mounting frame 1, and the raw material is cut by the top end of the cutting block 7. When guide blocks 8 of different sizes need to be installed, the appropriate guide block 8 is plugged into the mounting frame 1, so that the plug-in rod passes through the mounting frame 1, and then the limiting protrusion 24 provided on the inner wall of the clamping sleeve 11 is aligned with the outer wall of the clamping rod 9. The limiting groove 25 is aligned with the control sleeve 14, and the control sleeve 14 is pulled upward to slide along the slide rod 20, and the return spring 21 is stretched at the same time. The control sleeve 14 drives the outer rack 16 to move, and the outer rack 16 meshes with the gear 18 to rotate, and the gear 18 meshes with the inner rack 17 again, so that the gear 18 rotates and pushes the inner rack 17 to drive the sliding sleeve 13 to slide along the clamping sleeve 11, and the clamping block 12 slides and rises along the inclined slide groove through the sliding sleeve 13, and at the same time stretches the telescopic spring 19. At this time, the clamping rod 9 is inserted into the clamping sleeve 11 to lift the push piece 23 to squeeze the push spring 22, and then release the control sleeve 14. The control sleeve 14 is reset by the elastic reset of the return spring 21, and the clamping block 12 is clamped in the clamping groove 10 by the elastic reset of the telescopic spring 19, and the quick installation and replacement of the guide block 8 can be completed.
[0039] See also Figure 5 As an implementation method of a U-shaped headrest frame bending machine for a car seat, a guide mechanism is provided on the mounting frame 1, and the guide mechanism includes a second motor 26, a transmission wheel 27, a guide wheel 28, an adjustment block 29, a screw 30 and a handle 31. The second motor 26 is mounted on the end face of the mounting frame 1, the transmission wheel 27 is mounted on the output end of the second motor 26, and multiple groups of guide wheels 28 are mounted on the side wall of the mounting frame 1. The adjustment block 29 is provided on the mounting frame 1, the screw 30 is threadedly mounted on the mounting frame 1 and the bottom end is rotatably connected to the adjustment block 29, and the handle 31 is mounted on the top of the screw 30.
[0040] There are two groups of adjustment blocks 29 slidably mounted on the mounting frame 1 , and the two groups of adjustment blocks 29 are rotatably provided with guide wheels 28 and transmission wheels 27 .
[0041] More specifically, rotating the handle 31 drives the screw 30 to rotate, and the rotation of the screw 30 cooperates with the thread of the mounting frame 1, so that the screw 30 rises and drives the adjustment block 29 to slide along the mounting frame 1, thereby driving the transmission wheel 27 and the guide wheel 28 rotatably arranged on the adjustment block 29 to move, so that the spacing between multiple groups of transmission wheels 27 or multiple groups of guide wheels 28 can be adjusted. After adjusting to the appropriate spacing, the raw material is passed through the multiple groups of guide wheels 28 and extended into the multiple groups of transmission wheels 27, and the second motor 26 is started to drive one group of transmission wheels 27 to rotate, and then the raw material can be guided and transported.
[0042] In summary, when the overall equipment is in use or running: the bending raw material of the U-shaped headrest frame of the car seat is transported to the guide block 8 through the guide mechanism, and then the raw material is transported to the bending head 3, and the telescopic end is extended by controlling the cylinder 2 to push the bending head 3 to rotate along the mounting frame 1, and the raw material is bent by the protrusion provided on the bending head 3. After the bending operation is completed, the first motor 4 is controlled to rotate, driving the transmission shaft 5 to swing repeatedly, and the transmission shaft 5 drives the bottom end of the connecting rod 6 to swing repeatedly, so that the top end of the connecting rod 6 pushes the cutting block 7 to slide along the mounting frame 1, and the raw material is cut through the top end of the cutting block 7. When guide blocks 8 of different sizes need to be installed, the appropriate guide block 8 is plugged into the mounting frame 1, so that the plug-in rod passes through the mounting frame 1, and then the limiting protrusion 24 provided on the inner wall of the clamping sleeve 11 is aligned with the clamping sleeve 11. The limit groove 25 on the outer wall of the connecting rod 9 is aligned, and the control sleeve 14 is pulled upward to slide along the slide rod 20, while the return spring 21 is stretched, and the control sleeve 14 drives the outer rack 16 to move, and the outer rack 16 meshes with the gear 18 to rotate, and the gear 18 meshes with the inner rack 17 again, so that the gear 18 rotates and pushes the inner rack 17 to drive the sliding sleeve 13 to slide along the clamping sleeve 11, and the clamping block 12 slides and rises along the oblique slide groove through the sliding sleeve 13, while stretching the telescopic spring 19. At this time, the clamping rod 9 is inserted into the clamping sleeve 11 to lift the push piece 23 to squeeze the push spring 22, and then release the control sleeve 14. The control sleeve 14 is reset by the elastic reset of the return spring 21, and the clamping block 12 is clamped in the clamping groove 10 by the elastic reset of the telescopic spring 19, and the quick installation and replacement of the guide block 8 can be completed.
[0043] Turning the handle 31 drives the screw 30 to rotate. The rotation of the screw 30 cooperates with the thread of the mounting frame 1, so that the screw 30 rises and drives the adjustment block 29 to slide along the mounting frame 1, thereby driving the transmission wheel 27 and the guide wheel 28 rotatably arranged on the adjustment block 29 to move, so that the spacing between the multiple groups of transmission wheels 27 or the multiple groups of guide wheels 28 can be adjusted. After adjusting to the appropriate spacing, the raw material is passed through the multiple groups of guide wheels 28 and extended into the multiple groups of transmission wheels 27. The second motor 26 is started to drive one group of transmission wheels 27 to rotate, and then the raw material can be guided and transported.
[0044] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.
Claims
1. A U-shaped headrest frame bending machine for automobile seats, comprising a mounting frame (1), characterized in that: The mounting frame (1) is provided with a bending mechanism, the bending mechanism comprising a cylinder (2), a bending head (3), a first motor (4), a transmission shaft (5), a connecting rod (6), a cutting block (7) and a guide block (8), the cylinder (2) being provided on the mounting frame (1), the bending head (3) being provided on the mounting frame (1) and connected to the cylinder (2), the first motor (4) being provided at the bottom end of the mounting frame (1), the transmission shaft (5) being provided on the mounting frame (1) and connected to the first motor (4), the connecting rod (6) being provided on the transmission shaft (5), the cutting block (7) being provided at the top end of the connecting rod (6), the guide block (8) being provided on the mounting frame (1), and a clamping mechanism being provided on the guide block (8), the clamping mechanism comprising a clamping rod (9), a clamping groove (10), a clamping sleeve (11), a clamping block (12), and a clamping block (13). 2), a sliding sleeve (13), a control sleeve (14), a gradient slope (15), an outer rack (16), an inner rack (17) and a gear (18), wherein the clamping rod (9) is arranged on the guide block (8), the clamping groove (10) is arranged on the clamping rod (9), the clamping sleeve (11) is arranged on the clamping rod (9), the clamping block (12) is arranged on the clamping sleeve (11), the sliding sleeve (13) is arranged on the outer wall of the clamping sleeve (11), the gradient slope (15) is arranged on the outer side of the sliding sleeve (13), the control sleeve (14) is arranged on the outer side of the sliding sleeve (13), the outer rack (16) is arranged on the inner side of the control sleeve (14), the inner rack (17) is arranged on the outer side of the sliding sleeve (13), and the gear (18) is arranged on the clamping sleeve (11) and meshes with the inner rack (17) and the outer rack (16).
2. The U-shaped headrest frame bending machine for automobile seats according to claim 1 is characterized by: The top end of the cylinder (2) is rotatably mounted on the top end of the mounting frame (1); the two ends of the bending head (3) are rotatably connected to the mounting frame (1) and the telescopic end of the cylinder (2); the two ends of the connecting rod (6) are rotatably connected to the transmission shaft (5) and the cutting block (7); and the cutting block (7) is slidably mounted on the mounting frame (1).
3. The U-shaped headrest frame bending machine for automobile seats according to claim 1 is characterized by: The clamping blocks (12) are provided with multiple groups and are all slidably mounted on the clamping sleeve (11); the slope slopes (15) are provided with multiple groups and are all arranged on both sides of the clamping blocks (12); and telescopic springs (19) are connected between the multiple groups of the clamping blocks (12) and the clamping sleeve (11).
4. The U-shaped headrest frame bending machine for automobile seats according to claim 3 is characterized by: The clamping sleeve (11) is provided with a slide rod (20), and the slide rod (20) is provided in multiple groups and is slidably connected to the control sleeve (14), and the multiple groups of the slide rods (20) are all provided with a return spring (21).
5. The U-shaped headrest frame bending machine for automobile seats according to claim 4 is characterized by: A push spring (22) is provided in the clamping sleeve (11), and a push piece (23) is connected to the bottom end of the push spring (22).
6. The U-shaped headrest frame bending machine for automobile seats according to claim 5, characterized in that: The inner wall of the clamping sleeve (11) is provided with a limiting protrusion (24), and the limiting protrusion (24) is provided in multiple groups. The outer wall of the clamping rod (9) is provided with a limiting groove (25), and the limiting groove (25) is provided in multiple groups and all of them are adapted to the limiting protrusion (24).
7. The U-shaped headrest frame bending machine for automobile seats according to claim 1, characterized in that: The mounting frame (1) is provided with a guide mechanism, the guide mechanism comprising a second motor (26), a transmission wheel (27), a guide wheel (28), an adjustment block (29), a screw rod (30) and a turning handle (31), the second motor (26) being mounted on the end face of the mounting frame (1), the transmission wheel (27) being mounted on the output end of the second motor (26), the guide wheel (28) being provided with a plurality of groups mounted on the side wall of the mounting frame (1), the adjustment block (29) being provided on the mounting frame (1), the screw rod (30) being threadedly mounted on the mounting frame (1) and the bottom end being rotatably connected to the adjustment block (29), and the turning handle (31) being mounted on the top end of the screw rod (30).
8. The U-shaped headrest frame bending machine for automobile seats according to claim 7, characterized in that: The regulating blocks (29) are provided with two groups, both of which are slidably mounted on the mounting frame (1), and the two groups of regulating blocks (29) are respectively provided with guide wheels (28) and transmission wheels (27) for rotation.