Spring coiling machine with good straightening effect

Abstract

The spring coiling machine with the good straightening effect comprises a spring coiling machine body, a straightening frame, three straightening devices and an adjusting device, the straightening frame is arranged on the spring coiling machine body, an arc groove is formed in the straightening frame, the axis of the arc groove is parallel to the conveying direction of steel wires, and the three straightening devices are arranged on the straightening frame. The three straightening devices are distributed in the axis direction of the arc groove, each straightening device comprises a plurality of straightening rollers and a mounting frame, the mounting frames are connected to the straightening frame in a sliding mode in the arc direction of the arc groove, the straightening rollers are rotationally connected to the mounting frame, and the straightening rollers form a conveying gap allowing a steel wire to pass through. The adjusting device is used for changing the steel wire clamping direction of the straightening rollers in the three straightening devices. The steel bar straightening device has the effect that the steel bars can be straightened in multiple dimensions, so that the steel wire coil spring quality is improved.

Description

Technical Field

[0001] This application relates to the field of spring coiling machines, and in particular to a spring coiling machine with good straightening effect. Background Technology

[0002] A spring coiling machine is an automated or semi-automatic mechanical device specifically designed for coiling various types of springs. It processes metal wire through a series of steps, including feeding, straightening, forming, and cutting, to produce springs with specific shapes, sizes, and elastic properties. It is widely used in the automotive, electronics, machinery, home appliance, and medical device industries and is a core piece of equipment in spring production.

[0003] Currently, Chinese utility model patent CN207642198U discloses an automatic spring coiling machine feeding device, including a spring coiling machine frame. Two sets of straightening rollers are arranged side-by-side on one side of the frame, with a feeding gap between them. A feeding drive roller is installed on one side of each straightening roller. A sliding groove is longitudinally arranged on the frame directly below the feeding drive roller, and fixing holes are evenly spaced at the bottom of the groove. A sliding block is movably installed within the groove, with one end extending outside the groove and rotatably connected to a feeding driven roller. This application effectively improves the clamping efficiency of the spring coiling machine.

[0004] Two sets of straightening rollers form a path for feeding steel wire. Because the steel wire is curved in one dimension, straightening in only one direction cannot completely cover the bending defects of the steel wire. The steel wire still needs to be flipped multiple times for secondary straightening, which is inefficient and produces large errors. Summary of the Invention

[0005] In order to straighten the reinforcing bars in multiple dimensions and thus improve the quality of wire coiling, this application provides a coiling machine with good straightening effect.

[0006] This application provides a spring coiling machine with good straightening effect, which adopts the following technical solution: A spring coiling machine with good straightening effect includes a spring coiling machine body, a straightening frame, three straightening devices, and an adjustment device. The straightening frame is mounted on the spring coiling machine body and has an arc groove. The axis of the arc groove is parallel to the transport direction of the steel wire. The three straightening devices are distributed along the axis of the arc groove. Each straightening device includes several straightening rollers and a mounting frame. The mounting frame is slidably connected to the straightening frame along the arc direction of the arc groove. The several straightening rollers are rotatably connected to the mounting frame. The several straightening rollers form a transport gap for the steel wire to pass through. The adjustment device is used to change the clamping direction of the straightening rollers on the steel wire in the three straightening devices.

[0007] By adopting the above technical solution, the arc groove of the straightening frame ensures that the position of the straightening device on the steel wire remains consistent. The straightening position of the three straightening devices on the steel wire can be adjusted according to the actual needs. The three straightening devices can apply straightening force to the steel wire from different directions, covering bending defects of the steel wire in multiple dimensions. There is no need for manual multiple flipping of the steel wire for secondary straightening, reducing process redundancy and improving straightening efficiency. At the same time, through multi-directional collaborative straightening, the cumulative error caused by straightening in a single direction is reduced, and the straightening accuracy is improved.

[0008] Optionally, the mounting bracket of the straightening device located in the middle is fixedly mounted on the straightening frame. The adjusting device includes a driving component, a driving gear, two mating gears, two mating racks, and two arc-shaped racks. The axis of the driving gear is perpendicular to the axis of the arc groove and passes through the axis of the arc groove. The driving gear is rotatably connected to the straightening frame. The length direction of the mating racks is parallel to the axial direction of the arc groove. The two mating racks are located on both sides of the driving gear and are slidably connected to the straightening frame along the axial direction of the arc groove. The two mating gears correspond to the two straightening devices located on both sides. The axis of the mating gears is parallel to the axis of the driving gear. The mating gears are rotatably connected to the straightening frame. The two mating gears mesh with the mating racks respectively. The two arc-shaped racks correspond to the two straightening devices located on both sides. The arc-shaped racks are coaxially arranged with the arc groove and are mounted on the mounting bracket. The arc-shaped racks mesh with the mating racks. The driving component is used to drive the driving gear to rotate.

[0009] By adopting the above technical solution, in actual operation, when it is necessary to adjust the clamping direction of the straightening device, simply rotate the drive gear, and the cooperating gear will rotate synchronously, thereby driving the arc-shaped rack to move. The straightening devices on both sides can then be precisely and synchronously adjusted along the arc groove. This process avoids the angle deviation problem that is very easy to occur when manually adjusting the two devices individually. In large-scale production, ensuring that the clamping directions of the three straightening devices form an orderly angle gradient is crucial. The straightening force distribution of the straightening device on the steel wire is more uniform, effectively avoiding straightening defects such as steel wire deformation and breakage caused by local stress concentration. This greatly improves the stability of the overall straightening process and ensures the consistency and reliability of product quality.

[0010] Optionally, the driving component is a rotating rod and a turntable. The rotating rod is coaxially arranged with the driving gear, one end of the rotating rod is disposed on the driving gear, and the turntable is coaxially arranged with the rotating rod and disposed on the other end of the rotating rod.

[0011] By adopting the above technical solution, when it is necessary to rotate the drive gear, the operator can rotate the turntable, which will drive the rotating rod to rotate, and the rotating rod will drive the drive gear to rotate. The operation is simple and convenient.

[0012] Optionally, the straightening frame is provided with a limiting component for restricting the rotation of the turntable. The limiting component includes a limiting ring, a limiting bolt, a limiting nut, and an abutment. The limiting ring is coaxially arranged with the rotating rod and is located on the straightening frame. The tail of the limiting bolt is threaded to the turntable, the limiting nut is threaded to the limiting bolt, and the abutment is located at the tail of the limiting bolt. The abutment is used to abut against the limiting ring, and both the abutment and the abutment ring are made of rubber.

[0013] By adopting the above technical solution, vibrations are inevitable during the operation of the spring coiling machine. If the turntable position is unstable, the clamping direction of the straightening device may shift, affecting the straightening effect. By using limiting bolts to tightly connect the turntable and the limiting ring, the rubber abutment not only enhances friction but also acts as a buffer, effectively preventing the turntable from rotating due to vibration or external force. In continuous mass production, this design ensures that the straightening parameters remain stable, avoiding errors caused by parameter fluctuations. The limiting components effectively guarantee the consistency of product quality in batch production, reduce scrap rates, and improve the company's production efficiency.

[0014] Optionally, the mounting frame is provided with two sliding blocks, which slide and are connected to the mounting frame in a direction close to or away from the axis of the arc groove. Several straightening rollers are evenly distributed on the two sliding blocks, and the straightening rollers are rotatably connected to the sliding blocks. The straightening frame is also provided with a control device for adjusting the distance between the two sliding blocks.

[0015] By adopting the above technical solution, in actual production, different spring products require steel wires of different diameters. However, existing equipment can often only be adapted to steel wires of a fixed diameter, which limits its application range. By flexibly adjusting the spacing of the sliding blocks, the size of the transport gap formed by the straightening rollers can be changed, thereby adapting to steel wires of various diameters. Whether it is extremely fine steel wire for electronic components or thicker steel wire for industrial equipment, precise straightening can be achieved.

[0016] Optionally, the control device includes two adjusting components and a synchronizing component. The two adjusting components are staggered with the three straightening devices. Each adjusting component includes two adjusting plates, two coordinating blocks, and four connecting rods. The two adjusting plates are distributed along the axial direction of the arc groove and are slidably connected to the straightening frame along the axial direction of the arc groove. The two coordinating blocks correspond to the two adjusting plates and are slidably connected to the adjusting plates along the axial direction around the arc groove. The four adjusting rods correspond to the four sliding blocks of the two mounting frames. One end of the adjusting rod is rotatably connected to the sliding block, and the other end of the adjusting rod is slidably connected to the coordinating block. The synchronizing component is used to change the distance between the two adjusting plates.

[0017] By adopting the above technical solution, it is crucial to ensure that the spacing between the straightening rollers on both sides of the same straightening device can be adjusted synchronously and symmetrically during the straightening process. If unilateral adjustment leads to gap misalignment, the steel wire will be subjected to uneven force during transport, which can easily cause straightening defects such as misalignment and twisting. Since the distance between the mounting frames remains constant, changing the distance between the adjusting plates can change the distance between the mounting frames and the adjusting plates, causing the connecting rod to rotate and thus changing the distance between the two sliding blocks on the same mounting frame. Furthermore, through the sliding connection of the cooperating block to the adjusting plate, the rotation of the mounting frame does not affect the normal operation of the control device. The control device can effectively prevent steel wire deformation caused by force imbalance, further improve straightening accuracy, and ensure that product quality meets strict standard requirements.

[0018] Optionally, the synchronizing element includes two bidirectional screws and a synchronizing disc. The length direction of the bidirectional screws is parallel to the axial direction of the arc groove. The two bidirectional screws correspond to two adjusting elements. The two adjusting plates are respectively threaded onto the threaded sections of the bidirectional screws with opposite rotation directions. One end of the two bidirectional screws is connected to each other. The synchronizing disc is disposed on one end of the bidirectional screws.

[0019] By adopting the above technical solution, rotating the bidirectional screw can make the two adjusting plates move closer or further apart. The bidirectional screw can be precisely adjusted, and the staff can quickly and accurately adjust the gap to the target value by intuitively rotating the synchronous wheel.

[0020] Optionally, the straightening roller has a V-shaped annular groove.

[0021] By adopting the above technical solution, the contact area between the V-shaped groove and the steel wire is significantly increased compared with the traditional flat surface, and its special groove shape can effectively form a V-shaped groove that can tightly hold the steel wire, so that it always passes through the radial constraint of the straightening device along the preset path.

[0022] Optionally, the spring coiling machine body is provided with an active roller group for driving the steel wire to move. The active roller group includes two active rollers and a drive motor. The active roller group is rotatably connected to the spring coiling machine body, and the drive motor is used to drive the active rollers to rotate.

[0023] By adopting the above technical solution, the stability of the feeding speed directly affects the straightening effect during the operation of the spring coiling machine. Excessive fluctuations in the feeding speed can lead to uneven application time of the straightening force, resulting in localized over-straightening or insufficient straightening. This invention utilizes a drive motor to power the active roller assembly, enabling precise control of the feeding speed and maintaining it at a constant level. Taking the continuous production of large quantities of spring steel wire of the same specification as an example, a stable feeding speed ensures that each section of wire is processed under the same straightening conditions, avoiding quality defects caused by unstable feeding, guaranteeing the continuity and consistency of the straightening process, improving product quality stability and production efficiency, and providing strong support for large-scale production.

[0024] Optionally, the straightening frame is equipped with scales that make it easy for staff to identify and adjust the angle.

[0025] By adopting the above technical solution and setting angle scales on the straightening frame, staff can directly read the angle parameters of the straightening device, quickly reproduce historical debugging parameters, or accurately set the angle according to process requirements.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Three straightening devices are set up along the axis of the circular arc groove. The straightening roller clamping direction is changed with the adjustment device. The three straightening devices can apply straightening force to the steel wire from multiple dimensions such as horizontal, vertical and inclined. This fully covers the multi-directional bending defects of the steel wire during transportation and storage. There is no need to manually flip the steel wire multiple times for secondary straightening. This avoids the cumulative error caused by multiple operations in the traditional process. The straightness of the straightened steel wire is significantly improved, which directly reduces the risk of quality fluctuation in the subsequent spring forming process. 2. The adjustment device ensures that the clamping directions of the straightening devices on both sides are adjusted synchronously and accurately, avoiding angle deviations caused by manual adjustment; the limiting component keeps the straightening parameters stable during mass production, solving the problem of inconsistent product quality caused by parameter fluctuations in traditional equipment, and greatly improving the dimensional accuracy and elastic performance stability of springs in the same batch. 3. By adjusting the spacing through the sliding block and control device, it can accommodate steel wires of different diameters, eliminating the need for separate equipment for different specifications of steel wires. This design not only expands the applicability of the equipment and reduces equipment procurement costs, but also shortens production preparation time, thereby reducing the company's overall production costs in terms of both equipment utilization and manpower input. Attached Figure Description

[0027] Figure 1 It is a spring coiling machine with good straightening effect.

[0028] Figure 2 yes Figure 1 A schematic diagram of the adjustment device.

[0029] Figure 3 This is a structural diagram of the driving and limiting components.

[0030] Figure 4 This is a schematic diagram of the control device.

[0031] Reference numerals: 1. Spring coiling machine body; 2. Straightening frame; 21. Arc groove; 3. Straightening device; 31. Straightening roller; 32. Mounting frame; 33. Sliding block; 34. V-shaped ring groove; 4. Adjusting device; 41. Driving component; 411. Rotating rod; 412. Turntable; 42. Driving gear; 43. Matching gear; 44. Matching rack; 45. Arc rack; 46. Scale; 5. Active roller group; 51. Active roller; 52. Drive motor; 6. Limiting component; 61. Limiting ring; 62. Limiting bolt; 63. Limiting nut; 64. Abutment joint; 7. Control device; 71. Adjusting component; 711. Adjusting plate; 712. Coordinating block; 713. Connecting rod; 72. Synchronizing component; 721. Bidirectional screw; 722. Synchronizing disc. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail.

[0033] This application discloses a spring straightening machine with good straightening effect. (Refer to...) Figure 1 and Figure 2 A spring coiling machine with good straightening effect includes a spring coiling machine body 1, a straightening frame 2, three straightening devices 3, an adjusting device 4, and a drive roller group 5. The length direction of the straightening frame 2 is parallel to the transport direction of the steel wire. The straightening frame 2 is fixedly installed on one side of the spring coiling machine body 1. An arc groove 21 is opened on the straightening frame 2, extending along the length direction of the straightening frame 2 and penetrating the straightening frame 2. The three straightening devices 3 are distributed along the extension direction of the arc groove 21, and each straightening device 3 is located on one side of the arc groove 21. The straightening device 3 includes several straightening rollers 31 and a mounting frame 32. The mounting frame 32 of the middle straightening device 3 is fixedly installed in the arc groove 21. The mounting brackets 32 of the straightening devices 3 on both sides slide along the arc direction of the arc groove 21 and are connected to the straightening frame 2. The adjusting device 4 is used to change the position of the straightening devices 3 on both sides, thereby realizing the change of the clamping direction of the straightening roller 31 on the steel wire. The active roller group 5 is used to drive the steel bar into the coiling machine body 1. The active roller group 5 includes two active rollers 51 and a drive motor 52. The active rollers 51 are distributed in the vertical direction. The axis of the active rollers 51 is perpendicular to the axis of the arc groove 21. The active rollers 51 are rotatably connected to the coiling machine body 1. The two active rollers 51 are for the steel wire to pass through. The drive motor 52 is fixedly set on the coiling machine. The drive motor 52 is used to drive the active rollers 51 to rotate.

[0034] Reference Figure 1 and Figure 2 The adjusting device 4 includes a driving component 41, a driving gear 42, two mating gears 43, two mating racks 44, and two arc-shaped racks 45. The axis of the driving gear 42 is perpendicular to and passes through the axis of the arc groove 21. The driving gear 42 is rotatably connected to the straightening frame 2. The length direction of the mating racks 44 is parallel to the extension direction of the arc groove 21. The two mating racks 44 are located on both sides of the driving gear 42 and are slidably connected to the straightening frame 2. The mating racks 44 mesh with the driving gear 42. The two mating gears 43 and two arc-shaped racks 45 are connected to the straightening frame 2. A pair of mating racks 44 correspond to each other, and the axis of the mating gear 43 is parallel to the axis of the drive gear 42. The mating gear 43 is rotatably connected to the straightening frame 2. The mating racks 44 mesh with the mating gears 43. Two arc-shaped racks 45 correspond to the straightening devices 3 located on both sides. The arc-shaped racks 45 are coaxially arranged with the arc groove 21. The arc-shaped racks 45 are fixedly set on the mounting bracket 32 ​​of the corresponding straightening device 3. The arc-shaped racks 45 mesh with the mating gears 43. The mounting bracket 32 ​​has a scale 46 on the side wall facing the arc groove. The scale 46 is evenly distributed along the arc direction of the arc groove.

[0035] Reference Figure 3 The driving component 41 includes a rotating rod 411 and a turntable 412. The rotating rod 411 is coaxially arranged with the driving gear 42. One end of the rotating rod 411 is fixedly mounted on the driving gear 42, and the other end of the rotating rod 411 extends out of the straightening frame 2. The turntable 412 is coaxially arranged with the rotating rod 411 and is fixedly mounted on the other end of the rotating rod 411. The straightening frame 2 is provided with a limiting component 6 that restricts the rotation of the turntable 412. The limiting component 6 includes a limiting ring 61, a limiting bolt 62, a limiting nut 63, and an abutment 64. The limiting ring 61 is coaxially arranged with the rotating rod 411. The limiting ring 61 is fixedly set on the straightening frame 2. The axis of the limiting bolt 62 is parallel to the axis of the turntable 412. The tail of the limiting bolt 62 is eccentrically threaded on the turntable 412. The limiting nut 63 is threadedly connected to the limiting bolt 62. The limiting nut 63 abuts against the end face of the turntable 412 away from the head of the limiting bolt 62. The abutment 64 is fixedly set at the tail of the limiting bolt 62. The abutment 64 is used to abut against the limiting ring 61. Both the abutment 64 and the limiting ring 61 are made of rubber.

[0036] Reference Figure 2 and Figure 4The mounting frame 32 is provided with two sliding blocks 33. The two sliding blocks 33 are slidably connected to the mounting frame 32 along the axial direction of the arc groove 21. Several straightening rollers 31 are evenly distributed on the sliding blocks 33. The straightening rollers 31 are rotatably connected to the sliding blocks 33. A V-shaped annular groove 34 is opened on the outer wall of the straightening roller 31. The axis of the arc groove 21 passes through the midpoint of the line connecting the two opposite straightening rollers 31. The V-shaped annular groove 34 on the two opposite straightening rollers 31 forms a transport gap for the steel wire to pass through.

[0037] Reference Figure 2 and Figure 4 The straightening frame 2 is equipped with a control device 7 for adjusting the distance between sliding blocks 33. The control device 7 includes two adjusting components 71 and a synchronizing component 72. The two adjusting components 71 are staggered with the three straightening devices 3. The adjusting component 71 includes two adjusting plates 711, two cooperating blocks 712 and four connecting rods 713. The adjusting plates 711 are slidably connected to the straightening frame 2 along the axial direction of the arc groove 21. The cross section of the adjusting plate 711 is arc-shaped. The two cooperating blocks 712 correspond to the two adjusting plates 711 and are slidably connected to the arc surface of the adjusting plates 711. The four connecting rods 713 correspond to the four sliding blocks 33 in the two adjacent straightening devices 3. One end of the connecting rod 713 is rotatably connected to the sliding block 33 and the other end of the connecting rod 713 is rotatably connected to the cooperating block 712. The synchronizing component 72 is used to change the distance between the two adjusting plates 711.

[0038] Reference Figure 2 and Figure 4 The synchronizing element 72 includes two bidirectional screws 721 and a synchronizing disc 722. The two bidirectional screws 721 correspond to two adjusting elements 71. The length direction of the bidirectional screws 721 is parallel to the distribution direction of the two adjusting pieces 711. The bidirectional screws 721 are rotatably connected to the straightening frame 2. The two adjusting pieces 711 are respectively threaded to the threaded sections of the bidirectional screws 721 with opposite directions of rotation. One end of the two bidirectional screws 721 is fixedly connected. The synchronizing disc 722 is coaxially arranged with the bidirectional screws 721 and is fixedly arranged on one end of the bidirectional screws 721.

[0039] The implementation principle of a spring coiling machine with good straightening effect according to an embodiment of this application is as follows: The operator first passes the steel wire through three straightening devices 3, the active roller group 5, and the spring coiling machine body 1 in sequence. By adjusting the angle between the three straightening devices 3, the position of the steel wire to be straightened is changed. When adjustment is required, the drive component 41 drives the drive gear 42 to rotate, the drive gear 42 drives the mating rack 44 to move, the mating rack 44 drives the mating gear 43 to rotate, and the mating gear 43 drives the arc rack 45 to rotate, so that the mounting frame 32 moves along the arc length direction of the arc groove 21. After the adjustment is completed, it is locked by the limiting component 6. When the diameter of the steel wire does not match the transport gap formed by the straightening roller 31, the operator can use the synchronizing component 72 to drive the distance between the two adjusting pieces 711 in the two adjusting components 71. Through the action of the coordinating block 712 and the connecting rod 713, the distance of the sliding block 33 is adjusted. The adjustment of the sliding block 33 realizes the change of the distance of the straightening roller 31 to adapt to different steel wires.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spring coiling machine with good straightening effect, characterized in that: The device includes a spring coiling machine body (1), a straightening frame (2), three straightening devices (3), and an adjustment device (4). The straightening frame (2) is mounted on the spring coiling machine body (1). The straightening frame (2) has an arc groove (21) with its axis parallel to the direction of wire transport. The three straightening devices (3) are distributed along the axis of the arc groove (21). Each straightening device (3) includes several straightening rollers (31) and a mounting frame (32). The mounting frame (32) is slidably connected to the straightening frame (2) along the arc of the arc groove (21). Several straightening rollers (31) are rotatably connected to the mounting frame (32). The several straightening rollers (31) form a transport gap for the wire to pass through. The adjustment device (4) is used to change the clamping direction of the straightening rollers (31) of the three straightening devices (3) on the wire.

2. The spring coiling machine with good straightening effect according to claim 1, characterized in that: The mounting bracket (32) of the straightening device (3) located in the middle is fixedly set on the straightening frame (2). The adjusting device (4) includes a driving component (41), a driving gear (42), two mating gears (43), two mating racks (44), and two arc-shaped racks (45). The axis of the driving gear (42) is perpendicular to the axis of the arc groove (21) and passes through the axis of the arc groove (21). The driving gear (42) is rotatably connected to the straightening frame (2). The length direction of the mating racks (44) is parallel to the axial direction of the arc groove (21). The two mating racks (44) are located on both sides of the driving gear (42). The mating racks (44) slide along the axial direction of the arc groove (21). The two mating gears (43) are connected to the straightening frame (2), and the two mating gears (43) correspond to the two straightening devices (3) located on both sides. The axis of the mating gears (43) is parallel to the axis of the drive gear (42). The mating gears (43) are rotatably connected to the straightening frame (2). The two mating gears (43) mesh with the mating racks (44) respectively. The two arc racks (45) correspond to the two straightening devices (3) located on both sides. The arc racks (45) are coaxially arranged with the arc grooves (21). The arc racks (45) are arranged on the mounting frame (32). The arc racks (45) mesh with the mating racks (44). The drive member (41) is used to drive the drive gears (42) to rotate.

3. The spring coiling machine with good straightening effect according to claim 2, characterized in that: The driving component (41) consists of a rotating rod (411) and a turntable (412). The rotating rod (411) is coaxially arranged with the driving gear (42). One end of the rotating rod (411) is located on the driving gear (42). The turntable (412) is coaxially arranged with the rotating rod (411) and is located on the other end of the rotating rod (411).

4. The spring coiling machine with good straightening effect according to claim 3, characterized in that: The straightening frame (2) is provided with a limiting component (6) for limiting the rotation of the turntable (412). The limiting component (6) includes a limiting ring (61), a limiting bolt (62), a limiting nut (63), and an abutment (64). The limiting ring (61) is coaxially arranged with the rotating rod (411). The limiting ring (61) is set on the straightening frame (2). The tail of the limiting bolt (62) is threaded to the turntable (412). The limiting nut (63) is threaded to the limiting bolt (62). The abutment (64) is set at the tail of the limiting bolt (62). The abutment (64) is used to abut against the limiting ring (61). The abutment (64) and the abutment ring are made of rubber.

5. A spring coiling machine with good straightening effect according to claim 2, characterized in that: The mounting frame (32) is provided with two sliding blocks (33). The two sliding blocks (33) are slidably connected to the mounting frame (32) along the direction close to or away from the axis of the arc groove (21). Several straightening rollers (31) are evenly distributed on the two sliding blocks (33). The straightening rollers (31) are rotatably connected to the sliding blocks (33). The straightening frame (2) is also provided with a control device (7) for adjusting the distance between the two sliding blocks (33).

6. A spring coiling machine with good straightening effect according to claim 5, characterized in that: The control device (7) includes two adjusting components (71) and a synchronizing component (72). The two adjusting components (71) are staggered with the three straightening devices (3). The adjusting component (71) includes two adjusting plates (711), two coordinating blocks (712), and four connecting rods (713). The two adjusting plates (711) are distributed along the axial direction of the arc groove (21). The adjusting plates (711) are slidably connected to the straightening frame (2) along the axis of the arc groove (21). The two coordinating blocks (712) are slidably connected to the straightening frame (2). The same block (712) corresponds to the two adjusting plates (711). The coordinating block (712) is slidably connected to the adjusting plate (711) along the axis of the circular groove (21). The four adjusting rods correspond to the four sliding blocks (33) of the two mounting brackets (32). One end of the adjusting rod is rotatably connected to the sliding block (33), and the other end of the adjusting rod is slidably connected to the coordinating block (712). The synchronizing element (72) is used to change the distance between the two adjusting plates (711).

7. A spring coiling machine with good straightening effect according to claim 6, characterized in that: The synchronizing element (72) includes two bidirectional screws (721) and a synchronizing disc (722). The length direction of the bidirectional screws (721) is parallel to the axial direction of the arc groove (21). The two bidirectional screws (721) correspond to two adjusting elements (71). The two adjusting pieces (711) are threadedly connected to the threaded sections of the bidirectional screws (721) with opposite directions of rotation. One end of the two bidirectional screws (721) is connected to each other. The synchronizing disc (722) is set on one end of the bidirectional screws (721).

8. A spring coiling machine with good straightening effect according to claim 1, characterized in that: The straightening roller (31) is provided with a V-shaped annular groove (34).

9. A spring coiling machine with good straightening effect according to claim 1, characterized in that: The spring coiling machine body (1) is provided with an active roller group (5) for driving the steel wire to move. The active roller group (5) includes two active rollers (51) and a drive motor (52). The active roller group (5) is rotatably connected to the spring coiling machine body (1), and the drive motor (52) is used to drive the active rollers (51) to rotate.

10. A spring coiling machine with good straightening effect according to claim 1, characterized in that: The mounting bracket (32) is provided with a scale (46) to facilitate the identification and adjustment of the angle by the staff.

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