A punching machine for bending PET tape inside clock springs

Abstract

This utility model discloses a punching machine for bending PET strips inside a clock spring, including a base plate. A fixed frame is fixedly installed on the top side of the base plate, and a guide component is provided inside the fixed frame. A punching component is arranged inside the fixed frame through the guide component. A disc is arranged below the base plate, and a drive component is arranged on one side of the disc. Through an adjustment mechanism composed of a second motor, a threaded rod, and a sliding plate, the position of the fixed column can be flexibly adjusted according to the material characteristics of the PET strip and the punching length requirements. When the second motor is started and drives the threaded rod to rotate, the sliding plate moves along the axial direction of the threaded rod, changing the eccentricity of the fixed column, thereby adjusting the swing amplitude and speed of the linkage rod, realizing stepless adjustment of the cutter descent speed. Compared with the defects of fixed-speed punching in traditional equipment, it can effectively avoid material deformation caused by speed mismatch, making the equipment adaptable to PET strips of different thicknesses and elasticities, and solving the problems of lack of real-time feedback and poor adaptability of traditional equipment.

Description

Technical Field

[0001] This utility model relates to the field of PET tape processing technology, and in particular to a punching machine for bending PET tape inside a clock spring. Background Technology

[0002] In the automotive parts manufacturing industry, clock springs are key components connecting the steering wheel and the car body. The punching quality of the PET strip inside the clock spring directly affects the reliability of the product. PET strips are characterized by their thin thickness (usually 0.1-0.3mm), high elasticity, and the fact that the entire roll of material is in a curved state. During punching, both length accuracy (tolerance ≤ ±0.1mm) and edge flatness must be taken into account to ensure the rotational life of the clock spring and the stability of signal transmission.

[0003] However, traditional equipment relies solely on the feeding mechanism to control the cutting length, and cannot dynamically adjust the cutting action according to the material characteristics. It has poor adaptability when facing PET strips of different thicknesses or elasticities. Furthermore, traditional equipment uses a preset fixed program to control the feeding and cutting actions, lacking a real-time feedback mechanism. Even if different batches of PET strips are replaced, parameters such as the cutting speed and punching force remain unchanged, resulting in uneven material stress and difficulty in ensuring cutting consistency. Therefore, a punching and cutting machine for PET strips bent inside a clock spring is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a punching machine for bending PET tape inside a clock spring, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A punching machine for bending PET strips inside a clock spring includes a base plate. A fixed frame is fixedly installed on the top side of the base plate. A guide assembly is provided inside the fixed frame. A punching assembly is arranged inside the fixed frame via the guide assembly. A disc is arranged below the base plate. A drive assembly is arranged on one side of the disc. A connecting block is fixedly installed on one side of the disc. The connecting block has an elongated groove. A second motor is fixedly installed on one side of the connecting block. The output end of the second motor rotates through the connecting block and is fixedly connected to a threaded rod. The other end of the threaded rod is rotatably connected to the inner wall of one side of the elongated groove. A sliding plate is threaded onto the outer side of the threaded rod. The sliding plate is adapted to the elongated groove. A linkage assembly is provided between the sliding plate and the guide assembly.

[0006] Preferably, the guide assembly includes two guide rods fixedly installed on the top side of the base plate, the top ends of the two guide rods being fixedly connected to the bottom side of the fixing frame, and the same slider being slidably sleeved on the outer side of the two guide rods.

[0007] Preferably, the punching assembly includes a slider with a slot, a plug inserted into the slot, a cutter fixedly connected to the bottom side of the plug, and limit holes and mounting holes respectively provided on the slider and the plug, with the same limit block inserted into the limit hole and the mounting hole.

[0008] Preferably, the bottom plate has a cutting groove on its top side, with the cutting blade facing the cutting groove.

[0009] Preferably, the drive assembly includes a base plate with a fixed plate fixedly mounted on the bottom side, a first motor fixedly mounted on one side of the fixed plate, the output end of the first motor rotatably passing through the fixed plate and fixedly connected to a rotating rod, and the other end of the rotating rod being fixedly connected to one side of the disc.

[0010] Preferably, the linkage assembly includes a connecting post fixedly installed on one side of the slider, a linkage rod movably sleeved on the outside of the connecting post, a fixing post fixedly installed on one side of the slide plate, and the other end of the linkage rod movably sleeved on the outside of the fixing post.

[0011] Preferably, the bottom side of the base plate is fixedly equipped with four support legs.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. The adjustment mechanism, consisting of a second motor, a threaded rod, and a sliding plate, allows for flexible adjustment of the position of the fixed column based on the material characteristics of the PET strip and the required cutting length. When the second motor is started and drives the threaded rod to rotate, the sliding plate moves along the axial direction of the threaded rod, changing the eccentricity of the fixed column. This, in turn, adjusts the swing amplitude and speed of the linkage rod, achieving stepless adjustment of the cutter's descent speed. Compared to the fixed-speed cutting defects of traditional equipment, this effectively avoids material deformation caused by speed mismatch, allowing the equipment to adapt to PET strips of different thicknesses and elasticities. This solves the problems of lack of real-time feedback and poor adaptability in traditional equipment.

[0013] 2. The drive assembly, consisting of a first motor, a rotating rod, and a disc, along with a transmission structure composed of a linkage rod, a connecting column, and a slider, enables the reciprocating motion of the cutter. When the disc rotates, the fixed column drives the linkage rod to swing, pushing the slider to move linearly along the guide rod, converting the circular motion into a stable up-and-down linear motion to ensure precise cutting. At the same time, the two guide rods in the guide assembly limit the slider to prevent movement deviation. The design of the insert block and limit block in the cutting assembly facilitates quick cutter replacement and ensures consistent cutting. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model; Figure 2 This is a cross-sectional view of the structure of this utility model; Figure 3This is a schematic diagram of the disc-shaped parts of the present invention. Figure 4 This is a schematic diagram of the cutting blade part of the structure of this utility model.

[0015] In the diagram: 1. Base plate; 2. Fixing frame; 3. Guide rod; 4. Slider; 5. Insert block; 6. Cutter; 7. Limiting block; 8. Connecting column; 9. Linkage rod; 10. Fixing plate; 11. First motor; 12. Rotating rod; 13. Disc; 14. Connecting block; 15. Second motor; 16. Threaded rod; 17. Slide plate; 18. Fixing column; 19. Knife groove; 20. Support leg. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Reference Figure 1-4A punching machine for bending PET strips inside clock springs includes a base plate 1. A fixed frame 2 is fixedly installed on the top side of the base plate 1. A guide assembly is provided inside the fixed frame 2. A punching assembly is arranged inside the fixed frame 2 through the guide assembly. A disc 13 is arranged below the base plate 1. A drive assembly is arranged on one side of the disc 13. A connecting block 14 is fixedly installed on one side of the disc 13. The connecting block 14 has an elongated groove. A second motor 15 is fixedly installed on one side of the connecting block 14. The output end of the second motor 15 rotates through the connecting block 14 and is fixedly connected to a threaded rod 16. The other end of the threaded rod 16 is rotatably connected to the inner wall of one side of the elongated groove. A sliding plate 17 is threadedly sleeved on the outer side of the threaded rod 16. The sliding plate 17 is adapted to the elongated groove. A linkage assembly is provided between the sliding plate 17 and the guide assembly. The linkage assembly includes a connecting post 8 fixedly installed on one side of a slider 4. A linkage rod 9 is movably sleeved on the outer side of the connecting post 8. A fixed post 18 is fixedly installed on one side of the sliding plate 17. The other end of the linkage rod 9 is movably sleeved on the fixed post 18. On the outside of the disc 13, a fixed post 18 is provided on one side. A linkage rod 9 is movably sleeved on the outside of the fixed post 18. Since the other end of the linkage rod 9 is movably sleeved on the outside of the connecting post 8, when the disc 13 rotates, the fixed post 18 will pull the linkage rod 9 to rotate synchronously. When the fixed post 18 moves to the bottom, the linkage rod 9 will drive the slider 4 on the side of the connecting post 8 to move down, so that the cutter 6 below the slider 4 will punch. When the fixed post 18 rotates to the top of the disc 13, the linkage rod 9 will drive the slider 4 on the side of the connecting post 8 to move up. As the disc 13 rotates back and forth, the cutter 6 will continuously punch the PET tape. When it is necessary to adjust the descent speed of the cutter 6, the second motor 15 is started to drive the threaded rod 16 to rotate, so that the sliding plate 17 threaded on the outside of the threaded rod 16 drives the fixed post 18 to move synchronously. The distance of movement can be adjusted according to the required punching length. After adjustment, the PET tape can be punched according to the adjusted distance.

[0018] Specifically, the guide assembly includes two guide rods 3 fixedly installed on the top side of the base plate 1. The top ends of the two guide rods 3 are fixedly connected to the bottom side of the fixing frame 2. The same slider 4 is slidably sleeved on the outer side of the two guide rods 3. When the linkage rod 9 pulls the slider 4 fixedly connected to one side of the connecting column 8 to move down, the two guide rods 3 can play the role of guiding and limiting, and can convert the circular motion into linear up and down movement, thereby realizing continuous punching of the PET belt.

[0019] Specifically, the punching assembly includes a slider 4 with a slot, into which a block 5 is inserted. A cutter 6 is fixedly connected to the bottom side of the block 5. The slider 4 and the block 5 each have a limit hole and a mounting hole, and the same limit block 7 is inserted into the limit hole and the mounting hole. A cutter groove 19 is formed on the top side of the base plate 1, and the cutter 6 faces the cutter groove 19. Because the cutter 6 is provided and is inserted into the slot in the slider 4 through the block 5, when the cutter 6 needs to be replaced, the limit block 7 is removed from the slider 4 and the block 5. Since the insert block 5 is not limited, the operator can easily remove the insert block 5 from the slider 4 and then replace the cutter 6. After the cutter 6 is replaced, the insert block 5 is inserted into the slot opened in the slider 4 again. After insertion, the mounting hole opened in the insert block 5 and the limiting hole opened in the slider 4 will be aligned. At this time, the operator can re-insert the limiting block 7 into the limiting hole and the mounting hole. Furthermore, the blade groove 19 is opened on the top side of the base plate 1. The blade groove 19 is designed to prevent the cutter 6 from directly touching the base plate 1 and causing damage to the cutter 6.

[0020] Specifically, the drive assembly includes a fixed plate 10 fixedly mounted on the bottom side of the base plate 1, a first motor 11 fixedly mounted on one side of the fixed plate 10, the output end of the first motor 11 rotating through the fixed plate 10 and fixedly connected to a rotating rod 12, the other end of the rotating rod 12 being fixedly connected to one side of a disc 13, and four support legs 20 fixedly mounted on the bottom side of the base plate 1. By setting the first motor 11, when continuous punching of PET strip is required, starting the first motor 11 can drive the disc 13 fixedly connected to the other end of the rotating rod 12 to rotate synchronously, and then continuous punching of PET strip can be realized under the linkage mechanism.

[0021] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be any conventional known device, such as a computer, that can control the operation of the electrical components mentioned in the article.

[0022] In use: When it is necessary to punch and cut PET tape, start the first motor 11. Its output shaft is rigidly connected to the rotating rod 12, which drives the rotating rod 12 to rotate synchronously. The other end of the rotating rod 12 is fixedly connected to the disc 13, causing it to move in a circle around the axis. The fixed post 18 and the connecting post 8 on one side of the disc 13 are movably connected by the same linkage rod 9. So when the fixed post 18 rotates with the disc 13 to the lowest position, the linkage rod 9 pulls the connecting post 8 down, and the slider 4, which is fixedly connected to the connecting post 8, moves down along the guide rail, driving the cutter 6 installed below the slider 4 to complete the punching action; when the fixed post 18 rotates to the top of the disc 13, the linkage rod 9 pushes the connecting post 8 up, and the cutter 6 moves back to its original position. The cutter 6 reciprocates through the continuous rotation of the disc 13. To adjust the descent speed of the cutter 6, the second motor 15 can be started. Its output shaft is coaxially fixed with the threaded rod 16. The outer side of the threaded rod 16 is connected to the slide plate 17 through a threaded pair. When the second motor 15 drives the threaded rod 16 to rotate, the slide plate 17 moves along the axial direction of the threaded rod 16, causing the fixed column 18 fixed on the slide plate 17 to move synchronously. By adjusting the eccentricity of the fixed column 18, the swing amplitude and speed of the linkage rod 9 are changed, thereby adjusting the descent speed of the cutter 6. This adjustment process can be flexibly set according to the actual PET tape punching length requirements. After the adjustment is completed, the equipment will perform precise punching operations according to the new parameters.

[0023] 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.

[0024] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A die cutting machine for clock spring inner bending PET tape comprising a base plate (1), characterized in that, A fixed frame (2) is fixedly installed on the top side of the base plate (1). A guide component is provided inside the fixed frame (2). A punching component is provided inside the fixed frame (2) through the guide component. A disc (13) is provided below the base plate (1). A drive component is provided on one side of the disc (13). A connecting block (14) is fixedly installed on one side of the disc (13). A long groove is opened on the connecting block (14). A second motor (15) is fixedly installed on one side of the connecting block (14). The output end of the second motor (15) rotates through the connecting block (14) and is fixedly connected to a threaded rod (16). The other end of the threaded rod (16) is rotatably connected to the inner wall of one side of the long groove. A sliding plate (17) is threaded onto the outer side of the threaded rod (16). The sliding plate (17) is adapted to the long groove. A linkage component is provided between the sliding plate (17) and the guide component.

2. A die cutting machine for internally curved PET band for clock spring as claimed in claim 1 wherein, The guide assembly includes two guide rods (3) fixedly installed on the top side of the base plate (1). The top ends of the two guide rods (3) are fixedly connected to the bottom side of the fixing frame (2). The same slider (4) is slidably sleeved on the outer side of the two guide rods (3).

3. A die cutting machine for internally curved PET band for clock spring as claimed in claim 1 wherein, The punching assembly includes a slider (4) with a slot, a plug (5) inserted into the slot, a cutter (6) fixedly connected to the bottom side of the plug (5), and a limit hole and a mounting hole respectively opened on the slider (4) and the plug (5), with the same limit block (7) inserted into the limit hole and the mounting hole.

4. A die cutting machine for internally curved PET band for clock springs as claimed in claim 3 wherein, The bottom plate (1) has a knife groove (19) on its top side, and the cutter (6) faces the knife groove (19).

5. A die cutting machine for internally curved PET band for clock spring as claimed in claim 1 wherein, The drive assembly includes a base plate (1) on which a fixed plate (10) is fixedly installed. A first motor (11) is fixedly installed on one side of the fixed plate (10). The output end of the first motor (11) rotates through the fixed plate (10) and is fixedly connected to a rotating rod (12). The other end of the rotating rod (12) is fixedly connected to one side of the disc (13).

6. A die cutting machine for internally curved PET band for clock springs as claimed in claim 1, wherein, The linkage assembly includes a connecting column (8) fixedly installed on one side of the slider (4), a linkage rod (9) movably sleeved on the outside of the connecting column (8), a fixing column (18) fixedly installed on one side of the slide plate (17), and the other end of the linkage rod (9) movably sleeved on the outside of the fixing column (18).

7. A die cutting machine for internally curved PET band for clock springs as claimed in claim 1 wherein, The bottom side of the base plate (1) is fixedly installed with four support legs (20).

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