Swing arm bending device
By designing a swing arm bending device, a stepper motor-driven transmission system is used to achieve flexible swinging of the bending cutter head, solving the problem of inconvenient adjustment in multi-specification processing of traditional devices, and improving processing accuracy and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANZHOU LIJUN TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional bending devices lack flexibility in handling multi-specification processing needs, resulting in limited bending head swing range and cumbersome adjustment process, which affects processing accuracy and efficiency.
The device employs a swing arm bending mechanism, which uses a stepper motor to drive the rotation of the transmission wheel and the insertion shaft, thereby enabling the bending cutter head to swing left and right. Combined with a stable transmission structure design, this ensures the accuracy and flexibility of the cutter head position.
It improves processing accuracy and efficiency, simplifies operation procedures, broadens the scope of application of the equipment, and ensures the consistency of processing quality.
Smart Images

Figure CN224406303U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bending machines, specifically to a swing arm bending device. Background Technology
[0002] In the field of spring processing equipment, the position control accuracy of the bending cutter head of the bending device directly affects the spring forming quality. However, traditional equipment often suffers from insufficient adjustment flexibility when dealing with multi-specification processing needs. As spring products develop towards precision and diversification, the market places higher demands on the adaptability of processing equipment. How to simplify the operation process and broaden the scope of application while ensuring accuracy has become an important direction for technological improvement in the industry.
[0003] Common bending devices employ fixed transmission mechanisms or manual adjustment methods, resulting in limited swing range of the bending cutter head and cumbersome adjustment processes, making it difficult to quickly adapt to processing requirements for different bending positions. Furthermore, traditional transmission systems, due to their complex structure or insufficient linkage, are prone to mechanical vibration or positional deviations, affecting not only the consistency of processing accuracy but also requiring frequent adjustments to maintain performance. This increases operational difficulty and time costs, hindering the equipment's efficiency in diverse production scenarios. Utility Model Content
[0004] The purpose of this invention is to address the above-mentioned shortcomings by providing a swing arm bending device that can control the bending cutter head to swing left and right during processing, thus solving the technical problems of limited swing range and cumbersome adjustment process of the bending cutter head in the prior art.
[0005] The objective of this utility model is achieved through the following means:
[0006] A swing arm bending device includes a base, a main control box mounted on the top of the base, a turntable mounted on the outer end of the output shaft of the main control box, a discharge pipe coaxially mounted on the outside of the turntable, a main unit mounted on the outside of the main control box, a mounting seat circumferentially mounted on the outside of the main control box corresponding to the discharge pipe, a sliding groove opened inside the mounting seat, a movable seat inserted inside the sliding groove, an assembly seat mounted outside the movable seat, a stepper motor inserted inside the assembly seat, a transmission wheel coaxially connected to the outer end of the rotor of the stepper motor, an adjusting arm connected to the lower side of the assembly seat via a bearing, a connecting plate mounted on the bottom end of the adjusting arm, a bending cutter head sleeved on the outside of the connecting plate, a through groove opened on the upper side of the inside of the adjusting arm, and a insert shaft inserted inside the through groove.
[0007] Furthermore, the main control box is externally fitted with a sealed door, and the internal transmission end of the main control box is connected to a cam. The main control box is externally mounted with a swing arm via a bearing at the position outside the cam. The added sealed door facilitates the inspection and maintenance of the internal components of the main control box.
[0008] Furthermore, each swing arm has a transmission arm inserted into its outer end. The lower outer side of the transmission arm is fitted with a locking seat through a bearing. The outer side of the locking seat is connected to the upper outer side of the movable seat, which facilitates transmission.
[0009] Furthermore, both the slide and the movable seat are convex in shape, and the outer side of the mounting base is equipped with guide rails. There are 2-4 sets of guide rails, and the outer ends of the guide rails are connected to limit plates, which improves the stability of the movable seat during movement.
[0010] Furthermore, the inner end of the insert shaft is connected to the outside of the transmission wheel, and the connecting plate is connected to the bending cutter head and the mounting base is connected to the movable base by bolts, which facilitates disassembly and replacement.
[0011] Furthermore, the outer wall of the transmission arm is provided with a positioning hole along its length, and a limiting shaft is screwed onto the outside of the locking seat at a position corresponding to the positioning hole. The end of the limiting shaft is fitted with an anti-slip rubber sleeve to facilitate transmission.
[0012] The beneficial effects of this invention are as follows: the stepper motor drives the rotation of the transmission wheel and the insert shaft, which in turn drives the adjusting arm and the connecting plate to swing left and right through the through slot, thereby driving the bending cutter head to swing left and right, ensuring the accuracy of the bending position and effectively improving the processing precision. At the same time, the linkage design of the transmission structure makes the cutter head swing flexible and controllable, adapting to the processing requirements of different bending positions, broadening the applicability of the equipment, and enabling it to cope with various processing scenarios without complicated adjustments during processing, simplifying the operation process, helping to improve processing efficiency, and the stable transmission performance can ensure the consistency of processing quality. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the front structure of the main control box of this utility model;
[0015] Figure 3 This is a schematic diagram of the mounting base structure of this utility model;
[0016] Figure 4 This is a schematic diagram of the slide groove structure of this utility model;
[0017] Figure 5 This is a schematic diagram of the assembly base structure of this utility model.
[0018] In the diagram, 1. Base; 2. Main control box; 3. Sealing door; 4. Main unit; 5. Turntable; 6. Discharge pipe; 7. Cam; 8. Swing arm; 9. Mounting seat; 10. Slide groove; 11. Moving seat; 12. Assembly seat; 13. Stepper motor; 14. Adjusting arm; 15. Connecting plate; 16. Bending cutter head; 17. Transmission wheel; 18. Through groove; 19. Insert shaft; 20. Snap-fit seat; 21. Transmission arm; 22. Guide rail. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0020] In this embodiment, refer to Figures 1-5 The specific implementation of the swing arm bending device includes a base 1, a main control box 2 installed on the top of the base 1, a turntable 5 installed on the outer end of the output shaft of the main control box 2, a discharge pipe 6 coaxially installed on the outside of the turntable 5, a main unit 4 installed on the outside of the main control box 2, a sealing door 3 snapped onto the outside of the main control box 2, cams 7 connected to the internal transmission end of the main control box 2, and swing arms 8 installed on the outside of the main control box 2 at the position outside the cams 7 via bearings.
[0021] A mounting base 9 is circumferentially installed on the outside of the main control box 2 at a position corresponding to the discharge pipe 6. A sliding groove 10 is opened inside the mounting base 9. A movable base 11 is inserted inside the sliding groove 10. An assembly base 12 is installed on the outside of the movable base 11. A transmission arm 21 is inserted into the outer end of each swing arm 8. A snap-fit seat 20 is sleeved on the lower outer side of the transmission arm 21 through a bearing. The outer side of the snap-fit seat 20 is connected to the upper outer side of the movable base 11.
[0022] A stepper motor 13 is inserted inside the mounting base 12. A transmission wheel 17 is coaxially connected to the outer end of the rotor of the stepper motor 13. An adjusting arm 14 is connected to the lower outer side of the mounting base 12 via a bearing. A connecting plate 15 is installed at the bottom of the adjusting arm 14. A bending cutter head 16 is sleeved on the outside of the connecting plate 15. A through groove 18 is opened on the upper inner side of the adjusting arm 14. A shaft 19 is inserted inside the through groove 18. The stepper motor 13 drives the transmission wheel 17 and the shaft 19 to rotate, thereby driving the adjusting arm 14 and the connecting plate 15 to swing left and right through the through groove 18. This allows the bending cutter head 16 to swing left and right, thereby ensuring the accuracy of the bending position and effectively improving the processing precision. At the same time, the linkage design of the transmission structure makes the cutter head swing flexible and controllable, which can adapt to the processing requirements of different bending positions, broadening the application range of the equipment. It can handle various processing scenarios without complex adjustments during processing, simplifying the operation process, helping to improve processing efficiency, and the stable transmission performance can ensure the consistency of processing quality.
[0023] Both the slide groove 10 and the movable seat 11 are convex in shape. The outer side of the mounting seat 9 is equipped with guide rails 22. There are 2-4 sets of guide rails 22. The outer end of the guide rails 22 is connected to a limiting piece. The inner end of the insert shaft 19 is connected to the outside of the transmission wheel 17. The connecting plate 15 and the bending cutter head 16 and the mounting seat 12 and the movable seat 11 are all connected by bolts. The outer wall of the transmission arm 21 has a positioning hole along the length direction. The outer side of the snap-fit seat 20 is screwed with a limiting shaft at the position corresponding to the positioning hole. The end of the limiting shaft is fitted with an anti-slip rubber sleeve.
[0024] This solution uses a stepper motor 13 to drive the rotation of the transmission wheel 17 and the insert shaft 19, which in turn drives the adjusting arm 14 and the connecting plate 15 to swing left and right through the through slot 18. This allows the bending cutter head 16 to swing left and right, ensuring the accuracy of the bending position and effectively improving processing precision. At the same time, the linkage design of the transmission structure makes the cutter head swing flexible and controllable, adapting to the processing requirements of different bending positions, broadening the applicability of the equipment, and enabling it to cope with various processing scenarios without complex adjustments during processing. This simplifies the operation process, helps to improve processing efficiency, and the stable transmission performance ensures the consistency of processing quality.
[0025] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.
Claims
1. A swing arm bending apparatus comprising a base, characterised in that: A main control box is mounted on the top of the base. A turntable is mounted on the outer end of the output shaft of the main control box. A discharge pipe is coaxially mounted on the outside of the turntable. A main unit is mounted on the outside of the main control box. A mounting seat is circumferentially mounted on the outside of the main control box at a position corresponding to the discharge pipe. A sliding groove is opened inside the mounting seat. A movable seat is inserted inside the sliding groove. An assembly seat is mounted on the outside of the movable seat. A stepper motor is inserted inside the assembly seat. A transmission wheel is coaxially connected to the outer end of the rotor of the stepper motor. An adjusting arm is connected to the lower outside of the assembly seat through a bearing. A connecting plate is mounted on the bottom end of the adjusting arm. A bending cutter head is sleeved on the outside of the connecting plate. A through groove is opened on the upper inside of the adjusting arm. A insert shaft is inserted inside the through groove.
2. The swing arm bending device according to claim 1, characterized in that: The main control box is externally fitted with a sealed door, and the internal transmission end of the main control box is connected to a cam. The main control box is externally fitted with a swing arm via a bearing at the position outside the cam.
3. The swing arm bending device according to claim 2, characterized in that: Each swing arm has a transmission arm inserted into its outer end. The lower outer side of the transmission arm is fitted with a locking seat through a bearing. The outer side of the locking seat is connected to the upper outer side of the movable seat.
4. The swing arm bending device according to claim 1, characterized in that: Both the slide and the movable seat are convex in shape. The outer side of the mounting seat is equipped with guide rails, and there are 2-4 sets of guide rails. The outer ends of the guide rails are connected to limit plates.
5. The swing arm bending device according to claim 1, characterized in that: The inner end of the insert shaft is connected to the outside of the transmission wheel, and the connecting plate is connected to the bending cutter head and the mounting base is connected to the moving base by bolts.
6. The swing arm bending device according to claim 3, characterized in that: The outer wall of the transmission arm has a positioning hole along its length. A limiting shaft is screwed onto the outside of the locking seat at a position corresponding to the positioning hole. The end of the limiting shaft is fitted with an anti-slip rubber sleeve.