Automatic wire bending device

Abstract

The utility model relates to metal wire forming processing technical field, especially, a kind of automatic bending steel wire device, including rack, annular ring, drive assembly B, straightening mechanism and fixed-distance pushing mechanism, fixed seat is set on rack, center column is set on fixed seat, clamping groove A is set on center column, and cutting mechanism is set on center column;Annular ring is sleeved at the outside of center column, positioning column is set on annular ring;Drive assembly B is set on fixed seat and drives annular ring rotation;Straightening mechanism is set on rack, straightening mechanism is bent to the steel wire that will be bent in working condition and is bent to handle;Fixed-distance pushing mechanism is set on rack and located between fixed seat and straightening mechanism, fixed-distance pushing mechanism is in working condition and the steel wire that has been straightened is fixed-distance pushed to bending station.The utility model innovatively integrates steel wire straightening, fixed-distance pushing, accurate bending and automatic cutting function, realizes the full automation and high-precision machining of bending steel wire operation.

Description

Technical Field

[0001] This utility model relates to the field of metal wire forming and processing technology, and in particular to an automatic steel wire bending device. Background Technology

[0002] In the welding production of motorcycle welding fixtures and pipe and plate products, steel wire components with specific bends are often required. These steel wire components are usually used as positioning pins, support frames, or clamps, and the accuracy and consistency of their bending directly affect the positioning accuracy of the welding fixture and the welding quality of the final product.

[0003] Currently, the processing of these non-standard steel wire parts largely relies on manual labor or semi-automatic equipment. Operators typically need to use simple molds and manual tools to straighten, measure, bend, and cut. This method has significant drawbacks: firstly, production efficiency is low, making it difficult to meet the needs of mass production; secondly, processing accuracy is highly dependent on the operator's experience and skill, resulting in poor product consistency and easily leading to welding fixture assembly errors or batch defects. Furthermore, some existing single-function wire bending equipment often only performs bending operations, separating straightening, distance pushing, and cutting processes, causing production interruptions and requiring multiple clamping operations, further reducing efficiency and introducing additional positioning errors.

[0004] Therefore, the field of welding automation urgently needs an automated device that integrates wire straightening, fixed-distance pushing, precise bending and automatic cutting to improve the automation level, processing accuracy and overall efficiency of welding tooling manufacturing and product production. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing an automatic steel wire bending device.

[0006] The technical solution of this utility model is: an automatic steel wire bending device, including a frame, a fixed seat on the frame, a central column on the fixed seat, a slot A on the central column, and a cutting mechanism on the central column. A circular ring is fitted around the outside of the central column and is rotatably connected to both the fixed base and the central column. A positioning post is provided on the circular ring. Drive component B is mounted on a fixed base and drives the ring to rotate so as to push the steel wire to rotate around the axis of the central column by a set angle through the positioning column. The straightening mechanism is mounted on the frame and performs bending processing on the steel wire that is about to be bent when it is in operation. And a fixed-distance pushing mechanism, which is set on the frame and located between the fixed seat and the straightening mechanism. In the working state, the fixed-distance pushing mechanism pushes the straightened steel wire to the bending station at a fixed distance.

[0007] Preferably, the cutting mechanism includes a support, a cutter, and a drive assembly A; a slot B is provided on the central column, which is perpendicular to and connected to the slot A; the support is provided on the central column, and a movable plate is slidably provided on the support; the cutter is connected to the movable plate and adapted to the slot B; the drive assembly A is provided on the support, and the drive assembly A drives the movable plate to slide along the height direction of the support when in operation.

[0008] Preferably, a groove parallel to the ring's axis is provided on the ring, a permanent magnet that slides along the ring's height direction is provided in the groove, the bottom of the positioning post is connected to the permanent magnet, and an electromagnet is provided at the bottom of the groove.

[0009] Preferably, the drive assembly B includes a gear, a gear ring, a reducer, and a servo motor A; an annular groove coaxial with the outer arc surface of the ring is provided, the gear ring is located in the annular groove and connected to its inner wall, the gear is rotatably mounted in the fixed seat and meshes with the gear ring, the reducer is located at the bottom of the fixed seat, the output end of the reducer is connected to the central shaft of the gear through a coupling, the body of the servo motor A is located at the bottom of the fixed seat, and the output end of the servo motor A is connected to the input end of the reducer through a coupling.

[0010] Preferably, the straightening mechanism includes a fixed frame, a straightening wheel, a ratchet, a ratchet tooth, and a drive assembly C. Two sliders symmetrically arranged about the slot A and slidably connected thereto are mounted on the fixed frame. Several splined shafts rotatably connected to the sliders are spaced apart on the sliders, and a straightening wheel is coaxially connected to each splined shaft. The ratchet is coaxially connected to the splined shafts, and a spring rod is mounted on the slider. The ratchet tooth is connected to the movable end of the spring rod, and the ratchet tooth engages with the ratchet in one direction. The drive assembly C is mounted on the fixed frame, and in operation, the drive assembly C drives the two sliders to move synchronously closer or further apart.

[0011] Preferably, the fixed-distance pushing mechanism includes a slide and a drive assembly D. The slide is slidably mounted on the frame, and the structure of the slide is the same as that of the fixed frame. The drive assembly D is mounted on the frame and drives the slide to reciprocate at a fixed distance on the frame.

[0012] Preferably, the frame is provided with ear plates for placing the wire take-up rollers, and the frame is provided with guide wheels to guide the wire into the gap between two adjacent sets of straightening rollers.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects: By integrating the functions of straightening, spacing, precise bending, and automatic cutting of steel wire, the entire process from wire to finished product is automated, greatly reducing manual intervention. This is particularly suitable for supplying high-consistency bent steel wire components in batches for welding lines of automotive and motorcycle tooling and tube sheet products, seamlessly connecting to automated production lines. Through precise control of servo motors, linear modules, and laser rangefinders, it ensures that the angle and length of each bend strictly conform to preset parameters. Compared with traditional manual methods, automated continuous production is several times more efficient. The straightening mechanism adopts a symmetrical layout of straightening wheels and a one-way ratchet structure, which can effectively eliminate the internal stress and bending generated during the coiling process of the steel wire, ensuring that the steel wire entering the bending station is in a straight state. This is crucial for obtaining accurate bending shapes later, especially suitable for manufacturing welding positioning components with strict requirements. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the connection structure of the components on the mounting base; Figure 3 This is a schematic diagram of the internal structure of the ring; Figure 4 This is a schematic diagram of the connection structure of each component on the fixed frame / carriage; Figure 5 This is a schematic diagram of the connection structure between the slider and the spline shaft.

[0015] Reference numerals: 1. Frame; 2. Fixed base; 3. Central column; 31. Slot A; 32. Slot B; 4. Bracket; 5. Movable plate; 6. Cutter; 7. Drive assembly A; 8. Ring; 81. Slide; 9. Positioning column; 10. Drive assembly B; 11. Permanent magnet; 12. Electromagnet; 13. Fixed frame; 14. Carriage; 15. Slider; 16. Splined shaft; 17. Straightening wheel; 18. Ratchet; 19. Ratchet tooth; 20. Drive assembly C; 21. Drive assembly D. Detailed Implementation

[0016] Example 1, as Figures 1-5As shown, this utility model proposes an automatic wire bending device, including a frame 1, a ring 8, a drive assembly B10, a straightening mechanism, and a fixed-distance pushing mechanism. A fixed base 2 is mounted on the frame 1, a central column 3 is mounted on the fixed base 2, a slot A31 is mounted on the central column 3, and a cutting mechanism is mounted on the central column 3. The cutting mechanism includes a bracket 4, a cutter 6, and a drive assembly A7. A slot B32, perpendicular to and connected to the slot A31, is provided on the central column 3. The bracket 4 is mounted on the central column 3, and a movable plate 5 is slidably mounted on the bracket 4. The cutter 6 is connected to the movable plate 5 and adapted to the slot B32. The drive assembly A7 includes, but is not limited to, a servo electric cylinder. The body of the servo electric cylinder is mounted on the bracket 4, and the output end of the servo electric cylinder is connected to the movable plate 5. In the working state, the servo electric cylinder drives the movable plate 5 to slide along the height direction of the bracket 4. The ring 8 is sleeved on the outside of the central column 3 and is rotatably connected to both the fixed base 2 and the central column 3. A positioning post 9 is provided on the ring 8.

[0017] Drive assembly B10 is mounted on fixed base 2 and drives the ring 8 to rotate, thereby pushing the steel wire to rotate around the axis of the central column 3 by a set angle via positioning column 9. Drive assembly B10 includes a gear, a gear ring, a reducer, and a servo motor A. An annular groove coaxial with the ring 8 is provided on the outer arc surface of the ring 8. The gear ring is located in the annular groove and connected to its inner wall. The gear is rotatably mounted in fixed base 2 and meshes with the gear ring. The reducer is located at the bottom of fixed base 2, and the output end of the reducer is connected to the central shaft of the gear through a coupling. The body of servo motor A is located at the bottom of fixed base 2, and the output end of servo motor A is connected to the input end of reducer through a coupling.

[0018] The straightening mechanism is mounted on the frame 1 and includes a fixed frame 13, straightening wheels 17, ratchet 18, ratchet teeth 19, and a drive assembly C20. Two sliders 15 are symmetrically arranged on the fixed frame 13 about the slot A31 and slidably connected thereto. Several splined shafts 16 are spaced apart on the sliders 15 and rotatably connected thereto. Each splined shaft 16 is coaxially connected to a straightening wheel 17. The ratchet 18 is coaxially connected to the splined shafts 16. A spring rod is mounted on the slider 15, and the ratchet teeth 19 are connected to the movable end of the spring rod, engaging with the ratchet 18 in one direction. The drive assembly C20 includes, but is not limited to, a bidirectional lead screw and a servo motor B. The bidirectional lead screw is rotatably mounted on the fixed frame 13, and two lead screw sleeves are symmetrically arranged on the bidirectional lead screw. The two lead screw sleeves are respectively connected to the sliders 15 on their corresponding sides. In operation, the drive assembly C20 drives the two sliders 15 to move synchronously closer or further apart. In operation, the straightening mechanism performs bending processing on the steel wire to be bent.

[0019] A distance-fixed pushing mechanism is mounted on the frame 1 and located between the fixed base 2 and the straightening mechanism. The distance-fixed pushing mechanism includes a slide 14 and a drive assembly D21. The slide 14 is slidably mounted on the frame 1, and its structure is the same as that on the fixed base 13. The drive assembly D21 includes, but is not limited to, a linear module mounted on the frame 1. The output end of the linear module is connected to the slide 14, and a laser rangefinder sensor for detecting the distance between the slide 14 and the fixed base 2 is mounted on the frame 1. In operation, the distance-fixed pushing mechanism pushes the straightened steel wire to the bending station at a fixed distance.

[0020] It should be noted that this technical solution also includes a control panel, which uses a combination of HMI (Human Machine Interface) and PLC (Programmable Logic Controller). The HMI provides users with an intuitive and user-friendly interface, allowing them to easily issue various commands by touching the screen.

[0021] In this embodiment, the steel wire first enters the straightening mechanism. The straightening mechanism operates through a drive assembly C20, which includes a bidirectional lead screw and a servo motor B. The servo motor B drives the bidirectional lead screw to rotate, causing the two lead screw sleeves to move synchronously. This, in turn, drives the two sliders 15 to slide along the fixed frame 13, bringing the straightening wheel 17 on the sliders 15 closer to and pressing against the steel wire. The straightening wheel 17 is rotatably connected via a spline shaft 16. A ratchet 18 is coaxially connected to the spline shaft 16, and the ratchet tooth 19 engages unidirectionally with the ratchet 18 under the action of a spring rod, ensuring that the straightening wheel 17 can only rotate in one direction, thereby straightening the steel wire and eliminating bending deformation.

[0022] The straightened steel wire is pushed to the bending station by a fixed-distance pushing mechanism. Specifically, the straightening module drives the slide 14 to slide along the frame 1, pushing the steel wire towards the fixed seat 2. A laser rangefinder sensor on the frame 1 continuously monitors the distance between the slide 14 and the fixed seat 2, ensuring the steel wire is pushed at a fixed distance and precisely controlling the bending position. After the slide 14 has pushed a certain distance, it needs to slide back to its original position. At this time, the ratchet 18 on the slide 14 rotates unimpeded, while the ratchet 18 on the fixed seat 13 is restricted by its ratchet teeth and will not rotate. This ensures that the steel wire does not retract when the slide 14 slides back, ensuring accurate length of steel wire pushed each time.

[0023] When the steel wire reaches the bending station, one end of the wire is inserted into the slot A31 of the central column 3. The drive assembly B10 starts working, and the servo motor A drives the gear to rotate through the reducer. The gear meshes with the gear ring on the ring 8, thereby driving the ring 8 to rotate around the central column 3. The positioning pin 9 on the ring 8 rotates with the ring 8, pushing the steel wire to rotate around the axis of the central column 3, realizing the bending of the steel wire. The bending angle is controlled by the rotation angle of the ring 8, which is precisely set by the servo motor A.

[0024] After bending is completed, the cutting mechanism is activated. The servo electric cylinder drives the movable plate 5 to slide along the height direction of the bracket 4, which drives the cutter 6 into the slot B32 and contacts the steel wire in the slot A31 to complete the cutting of the steel wire.

[0025] The entire working process is coordinated and controlled by the control panel, which uses a combination of HMI and PLC. The HMI provides an operating interface, and users can set parameters and instructions through the touch screen. The PLC controls the coordinated work of drive components A7, B10, C20 and D21 according to the instructions to realize the functions of automatic straightening, fixed-distance pushing, bending and cutting, ensuring high precision and efficiency in steel wire processing.

[0026] Example 2, as Figure 3 As shown, the present invention proposes an automatic wire bending device. Compared with the first embodiment, the ring 8 is provided with a groove 81 parallel to its axis. A permanent magnet 11 is provided in the groove 81 and slides along its height direction. The bottom of the positioning column 9 is connected to the permanent magnet 11. An electromagnet 12 is provided at the bottom of the groove 81.

[0027] In this embodiment, the bending of the steel wire is not necessarily in a fixed direction. When a reverse bending is required, the electromagnet 12 is de-energized, the positioning post 9 slides down and retracts into the slide groove 81, and at this time the driving ring 8 rotates and the positioning post 9 passes over the steel wire. Then the electromagnet 12 is energized, and the magnetic poles of the electromagnet 12 and the permanent magnet 11 are the same at the end that is close to each other, thereby pushing the positioning post 9 and making it extend and reset. Then the ring 8 is driven to rotate in the opposite direction.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An automatic steel wire bending device, characterized in that, include: A frame (1) is provided with a fixed seat (2), a central column (3) is provided on the fixed seat (2), a slot A (31) is provided on the central column (3), and a cutting mechanism is provided on the central column (3); A circular ring (8) is fitted around the outside of the central column (3) and is rotatably connected to both the fixed seat (2) and the central column (3). A positioning post (9) is provided on the circular ring (8). Drive component B (10) is set on the fixed base (2) and drives the ring (8) to rotate so as to push the steel wire to rotate around the axis of the central column (3) by a set angle through the positioning column (9); The straightening mechanism is set on the frame (1). The straightening mechanism performs bending treatment on the steel wire that is about to be bent in the working state. And a fixed-distance pushing mechanism, which is set on the frame (1) and located between the fixed seat (2) and the straightening mechanism. In the working state, the fixed-distance pushing mechanism pushes the straightened steel wire to the bending station at a fixed distance.

2. The automatic wire bending device according to claim 1, characterized in that, The cutting mechanism includes a bracket (4), a cutter (6), and a drive assembly A (7); a slot B (32) is provided on the central column (3) and is perpendicular to and connected to the slot A (31); the bracket (4) is provided on the central column (3); a movable plate (5) is slidably provided on the bracket (4); the cutter (6) is connected to the movable plate (5) and adapted to the slot B (32); the drive assembly A (7) is provided on the bracket (4); and the drive assembly A (7) drives the movable plate (5) to slide along the height direction of the bracket (4) in the working state.

3. The automatic wire bending device according to claim 1, characterized in that, A groove (81) parallel to its axis is provided on the ring (8). A permanent magnet (11) that slides along its height direction is provided in the groove (81). The bottom of the positioning post (9) is connected to the permanent magnet (11). An electromagnet (12) is provided at the bottom of the groove (81).

4. The automatic wire bending device according to claim 1, characterized in that, The drive assembly B (10) includes a gear, a gear ring, a reducer and a servo motor A; an annular groove coaxial with the outer arc surface of the ring (8) is provided, the gear ring is located in the annular groove and connected to its inner wall, the gear is rotatably set in the fixed seat (2) and meshes with the gear ring, the reducer is set at the bottom of the fixed seat (2), the output end of the reducer is connected to the central shaft of the gear through a coupling, the body of the servo motor A is set at the bottom of the fixed seat (2), and the output end of the servo motor A is connected to the input end of the reducer through a coupling.

5. An automatic wire bending device according to claim 1, characterized in that, The straightening mechanism includes a fixed frame (13), a straightening wheel (17), a ratchet (18), a ratchet tooth (19), and a drive assembly C (20). Two sliders (15) are symmetrically arranged on the fixed frame (13) about the slot A (31) and are slidably connected to it. Several spline shafts (16) are arranged at intervals on the sliders (15) and are rotatably connected to them. A straightening wheel (17) is coaxially connected to each spline shaft (16). The ratchet (18) is coaxially connected to the spline shaft (16). A spring rod is arranged on the slider (15). The ratchet tooth (19) is connected to the movable end of the spring rod. The ratchet tooth (19) and the ratchet tooth (18) mesh in one direction. The drive assembly C (20) is arranged on the fixed frame (13). When the working state is working, the drive assembly C (20) drives the two sliders (15) to move closer or further away synchronously.

6. An automatic wire bending device according to claim 5, characterized in that, The fixed-distance pushing mechanism includes a slide (14) and a drive component D (21). The slide (14) is slidably mounted on the frame (1). The structure of the slide (14) is the same as that on the fixed frame (13). The drive component D (21) is mounted on the frame (1) and drives the slide (14) to move back and forth at a fixed distance on the frame (1).

7. An automatic wire bending device according to claim 5, characterized in that, The frame (1) is provided with ear plates for placing wire take-up rollers, and the frame (1) is provided with guide wheels to guide the wire into the gap between two adjacent sets of straightening rollers (17) through the guide wheels.

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