Steel wire bending mechanism and brush making machine

Abstract

The utility model provides a kind of steel wire bending mechanism and brush making machine, comprising: bending subassembly, bending subassembly is used to carry out bending treatment to steel wire;Steel wire clamping subassembly, steel wire clamping subassembly is arranged in the side of bending subassembly, steel wire clamping subassembly is used to clamp the steel wire after bending treatment of bending subassembly;Motor drive subassembly, motor drive subassembly is driven connection with bending subassembly, to drive bending subassembly to steel wire bending by motor drive subassembly, and the steel wire after bending is sent to steel wire clamping subassembly;Motor drive subassembly is used to replace traditional cylinder driving mode, the reciprocating linear motion of bending subassembly is converted by the continuous rotary motion of motor drive subassembly, eliminate the time gap in the contraction process of cylinder;The structure can realize the continuous connection of bending and feeding action, reduce processing pause time, to improve the production efficiency of steel wire bending process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a brush manufacturing technical field, concretely relates to a steel wire bending mechanism and brush making machine. BACKGROUND

[0002] In the brush manufacturing industry, steel wire is widely used in various industrial brushes as a supporting structure, such as drum brush, strip brush, test tube brush, etc. Its main function is to fix the bristles on the brush body and provide certain structural strength and shape support. Therefore, the bending forming of steel wire is one of the key links in the brush making process, which directly affects the overall structural stability, service life and appearance quality of the brush. The existing steel wire bending process mainly uses a cylinder to drive the bending of the steel wire. Although this method uses automatic technology to bend the steel wire, it reduces the labor intensity of workers, but in actual application, the cylinder needs a certain time to contract during the bending process of the bending part. During the contraction process of the cylinder, the processing must be stopped, and there is a certain time gap. Therefore, the production efficiency of the cylinder-driven bending part for bending the steel wire has room for improvement.

[0003] Therefore, the prior art needs to be further developed. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the above technical defects, providing a steel wire bending mechanism and brush making machine to solve the technical problem that the cylinder needs a certain time to contract during the bending process of the bending part in the related art. During the contraction process of the cylinder, the processing must be stopped, and there is a certain time gap. Therefore, the production efficiency of the cylinder-driven bending part for bending the steel wire has room for improvement.

[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme: a steel wire bending mechanism is provided, which comprises: a bending assembly for bending the steel wire; a steel wire clamping assembly arranged on one side of the bending assembly for clamping the bent steel wire; and a motor drive assembly drivingly connected with the bending assembly to drive the bending assembly to bend the steel wire and send the bent steel wire to the steel wire clamping assembly.

[0006] Further, the steel wire bending mechanism further comprises: a mounting frame mounted on a mounting reference; and the motor drive assembly comprises a motor drive part and a transmission part. The motor drive part is arranged on the mounting frame, and the transmission part is connected with the motor drive part and the bending assembly respectively. The motor drive part drives the bending assembly to move through the transmission part, so that the bending assembly bends the steel wire and sends the bent steel wire to the steel wire clamping assembly.

[0007] Furthermore, the motor drive assembly also includes: a servo motor mounted on a mounting bracket; a drive gear connected to the output end of the servo motor; a driven gear spaced apart from the drive gear along the width direction of the mounting bracket and rotatably mounted on the mounting bracket; a toothed belt sleeved on the drive gear and the driven gear, the toothed belt being connected to the drive gear and the driven gear respectively, so as to drive the toothed belt to move through the drive gear, thereby driving the driven gear to rotate; and a toothed plate mounted on the toothed belt and located on the outer wall of the toothed belt, the toothed plate being connected to the bending assembly, the toothed belt driving the bending assembly to reciprocate through the toothed plate; wherein, the servo motor forms the motor drive unit; and the drive gear, driven gear, toothed belt, and toothed plate form the transmission unit.

[0008] Furthermore, the bending assembly includes a wire limiting part and a wire bending part. The wire limiting part has a limiting channel that extends vertically. The wire passes through the limiting channel along its extension direction to limit the wire. The wire bending part is movably arranged along the width direction of the mounting frame. The bent end of the wire bending part is located at the bottom of the limiting channel. The wire bending part is used to bend the limited wire and to feed the bent wire onto the wire clamping assembly.

[0009] Further, the bending assembly includes: a slider extending along the width direction of the mounting bracket and mounted on the mounting bracket; a movable plate movably disposed on the slider along the extension direction of the slider, the movable plate being connected to a transmission unit to drive the movable plate to slide on the slider via the transmission unit; and a bending cutter mounted on the movable plate, the extension direction of the bending cutter being perpendicular to the extension direction of the movable plate, the bending end of the bending cutter protruding from the movable plate, and the bending end of the bending cutter being located at the bottom of the limiting channel; to allow for... The bending cutter bends the steel wire after it has been limited; the bending cutter has a bending section for bending the steel wire, and a feeding state for pushing the bent steel wire toward the steel wire clamping assembly, and a avoidance state for avoiding the steel wire; a fixing block is set on the moving plate, and the fixing block is used to fix the bending cutter on the moving plate; wherein, the slider, the moving plate, the bending cutter, and the fixing block form the steel wire bending section; when the steel wire is in the moving state, the bending cutter is in the avoidance state; when the steel wire is in the stationary state, the bending cutter is in the feeding state.

[0010] Furthermore, the bending assembly includes: a limiting plate extending along the extension direction of the slider; a limiting channel and a clearance opening communicating with the limiting channel are provided on the limiting plate; the limiting channel extends along the height direction of the limiting plate and is used to limit the steel wire; the clearance opening is located on the side of the limiting plate near the steel wire clamping assembly; when the steel wire passes through the limiting channel, the steel wire bending part is used to bend the limited steel wire and drive the bent steel wire to move toward the clearance opening.

[0011] Furthermore, the bending assembly also includes: a first guide wheel, rotatably disposed on the side of the limiting plate near the wire clamping assembly, the first guide wheel having a first limiting groove on its side wall, the first limiting groove extending along the circumferential direction of the first guide wheel to form a continuous annular structure; and a second guide wheel, rotatably disposed on the side of the limiting plate near the wire clamping assembly, the second guide wheel being spaced apart from the first guide wheel in the vertical direction, the second guide wheel having a second limiting groove, the first limiting groove extending along the circumferential direction of the second guide wheel. The direction extends to form a continuous ring structure; the first limiting groove and the second limiting groove are arranged opposite to each other, and both the first limiting groove and the second limiting groove are arranged corresponding to the clearance opening; wherein, when the bending cutter pushes the steel wire out from the clearance opening, the steel wire is bent under the limiting action of the first limiting groove on the first guide wheel and the second limiting groove on the second guide wheel; and when the bending cutter drives the bent steel wire to move toward the clearance opening, the bent steel wire is guided; the limiting plate, the first guide wheel, and the second guide wheel form the steel wire limiting part.

[0012] Furthermore, the wire bending mechanism also includes a cutting assembly, which includes a drive member that extends and retracts along the extension direction of the limiting plate, the drive member being mounted on a mounting bracket and positioned above the limiting plate; and a cutting head mounted on the extension end of the drive member for cutting the wire.

[0013] Furthermore, the wire clamping assembly includes a clamping cylinder, which is used to clamp the wire after it has been bent by the bending assembly, and the clamping cylinder is spaced apart from the bending assembly.

[0014] A brush-making machine includes the steel wire bending mechanism described above.

[0015] Beneficial effects: 1. By replacing the traditional cylinder drive method with a motor drive component, the continuous rotational motion of the motor drive component is converted into the reciprocating linear motion of the bending component, eliminating the time gap during the cylinder retraction process. This structure can realize the continuous connection between bending and feeding actions, reduce processing downtime, and thus improve the production efficiency of the wire bending process.

[0016] 2. The combination of a servo motor and a gear and belt drive system enables precise control of the bending component's movement speed and displacement. The rigid connection between the gear belt and the gear plate ensures efficient power transmission, and the spaced arrangement of the driving and driven gears extends the transmission stroke, meeting the bending requirements of steel wires of different lengths. This structure combines high response speed and motion accuracy, further optimizing the processing cycle.

[0017] 3. The clearance on the limit plate provides a directional outlet for the bent steel wire. Combined with the pushing action of the bending knife, the bending part can directly guide the steel wire to the steel wire clamping assembly after the bending is completed, realizing the integration of bending and transfer processes and reducing the time loss of intermediate transfer links. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a wire bending mechanism used in an embodiment of this utility model; Figure 2 This is a first-view structural schematic diagram of a wire bending mechanism used in an embodiment of this utility model.

[0019] The above figures include the following reference numerals: 1. Bending assembly; 2. Wire clamping assembly; 3. Motor drive assembly; 4. Mounting bracket; 5. Servo motor; 6. Drive gear; 7. Driven gear; 8. Toothed belt; 9. Toothed plate; 10. Slider; 11. Moving plate; 12. Bending knife; 13. Fixing block; 14. Limiting plate; 15. Limiting channel; 16. Bending cavity; 17. First guide wheel; 18. Second guide wheel; 19. Cutting assembly; 20. Drive component; 21. Cutting head; 22. Clamping cylinder; 23. Wire. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] According to an embodiment of this utility model, a wire bending mechanism is provided. Please refer to [link / reference]. Figures 1 to 2 It includes: a bending assembly 1, which is used to bend the steel wire 23; a steel wire clamping assembly 2, which is disposed on one side of the bending assembly 1 and is used to clamp the steel wire 23 after it has been bent by the bending assembly 1; and a motor drive assembly 3, which is drivenly connected to the bending assembly 1 so as to drive the bending assembly 1 to bend the steel wire 23 and to send the bent steel wire 23 to the steel wire clamping assembly 2.

[0022] By adopting the above technical solution, the motor drive component 3 is used to replace the traditional cylinder drive method. The continuous rotational motion of the motor drive component 3 is transformed into the reciprocating linear motion of the bending component 1, eliminating the time gap in the cylinder retraction process. This structure can realize the continuous connection between bending and feeding actions, reduce processing downtime, and thus improve the production efficiency of the wire bending process.

[0023] Please refer to Figure 1 and Figure 2 The wire bending mechanism also includes: a mounting frame 4, which is mounted on a mounting reference; the motor drive assembly 3 includes: a motor drive unit and a transmission unit, the motor drive unit is mounted on the mounting frame 4, and the transmission unit is connected to the motor drive unit and the bending assembly 1 respectively. The motor drive unit drives the bending assembly 1 to move through the transmission unit, so that the bending assembly 1 bends the wire 23 and sends the bent wire 23 to the wire clamping assembly 2.

[0024] By adopting the above technical solution, the traditional cylinder drive method is replaced by a motor drive unit. Through the cooperation of the motor drive unit and the transmission unit, the continuous rotational motion is transformed into the reciprocating linear motion of the bending component 1, eliminating the time gap in the cylinder retraction process. This structure can realize the continuous connection between bending and feeding actions, reduce processing downtime, and thus improve the production efficiency of the wire bending process.

[0025] Please refer to Figure 1 and Figure 2 The motor drive assembly 3 further includes: a servo motor 5, which is mounted on the mounting bracket 4; a drive gear 6, which is drivenly connected to the output end of the servo motor 5; a driven gear 7, which is spaced apart from the drive gear 6 along the width direction of the mounting bracket 4 and is rotatably mounted on the mounting bracket 4; a toothed belt 8, which is sleeved on the drive gear 6 and the driven gear 7 and is drivenly connected to the drive gear 6 and the driven gear 7 respectively, so as to drive the toothed belt 8 to move through the drive gear 6, so as to drive the driven gear 7 to rotate; and a toothed plate 9, which is mounted on the toothed belt 8 and is located on the outer wall of the toothed belt 8. The toothed plate 9 is connected to the bending assembly 1, and the toothed belt 8 drives the bending assembly 1 to reciprocate through the toothed plate 9; wherein, the servo motor 5 forms a motor drive unit; and the drive gear 6, the driven gear 7, the toothed belt 8, and the toothed plate 9 form a transmission unit.

[0026] By adopting the above technical solution, the combination of servo motor 5 and gear belt transmission system can precisely control the moving speed and displacement of bending component 1; the rigid connection between toothed belt 8 and toothed plate 9 ensures power transmission efficiency, and the spaced arrangement of driving gear 6 and driven gear 7 can extend the transmission stroke to meet the bending requirements of steel wire 23 of different lengths. This structure combines high response speed and motion accuracy, further optimizing the processing cycle.

[0027] Please refer to Figure 1 and Figure 2 The bending assembly 1 includes a wire limiting part and a wire bending part. The wire limiting part has a limiting channel 15 extending vertically. The wire 23 passes through the limiting channel 15 along its extension direction to limit the wire 23. The wire bending part is movably arranged along the width direction of the mounting frame 4. Figure 1 The direction of the middle arrow A is the width direction of the mounting bracket 4. The bent end of the wire bending part is located at the bottom of the limiting channel 15. The wire bending part is used to bend the limiting wire 23 and send the bent wire 23 to the wire clamping assembly 2.

[0028] By adopting the above technical solution, the wire limiting part directionally constrains the wire 23 through the vertically extending limiting channel 15, ensuring the repeatability accuracy of the bending start position; the design of the wire bending part moving along the width direction of the mounting frame 4 makes it generate a force perpendicular to the wire axis during the bending process, achieving precise 90° bending angle control and avoiding lateral deviation of the wire during bending.

[0029] Please refer to Figure 1 and Figure 2 The bending assembly 1 includes: a slider 10, which extends along the width direction of the mounting frame 4 and is mounted on the mounting frame 4; a movable plate 11, which is movably disposed on the slider 10 along the extension direction of the slider 10 and is connected to a transmission unit to drive the movable plate 11 to slide on the slider 10; and a bending blade 12, which is mounted on the movable plate 11 and whose extension direction is perpendicular to that of the movable plate 11. The bending end of the bending blade 12 protrudes from the movable plate 11 and is located in a limiting channel. The bottom of 15; to bend the limited steel wire 23 by the bending blade 12; and to push the bent steel wire 23 toward the steel wire clamping assembly 2 in a feeding state and a avoidance state to avoid the steel wire 23; a fixing block 13 is provided on the moving plate 11, and the fixing block 13 is used to fix the bending blade 12 on the moving plate 11; wherein, the slider 10, the moving plate 11, the bending blade 12, and the fixing block 13 form the steel wire bending part; when the steel wire 23 is in the moving state, the bending blade 12 is in the avoidance state; when the steel wire 23 is in the stationary state, the bending blade 12 is in the feeding state.

[0030] By adopting the above technical solution, the sliding cooperation structure between the slider 10 and the moving plate 11 provides low-friction guidance, ensuring the linear motion accuracy of the bending cutter 12; the switching design of the feeding state and the avoidance state of the bending cutter 12 enables it to automatically avoid the wire 23 when it is moving and to perform bending action when it is stationary, effectively solving the interference problem between wire feeding and bending action in traditional processes and improving the continuity of processing.

[0031] Please refer to Figure 1 and Figure 2 The bending assembly 1 includes: a limiting plate 14, which extends along the extension direction of the slider 10. The limiting plate 14 has a limiting channel 15 and a clearance opening communicating with the limiting channel 15. The limiting channel 15 extends along the height direction of the limiting plate 14 and is used to limit the steel wire 23. The clearance opening is located on the side of the limiting plate 14 near the steel wire clamping assembly 2. When the steel wire 23 passes through the limiting channel 15, the steel wire bending part is used to bend the limited steel wire 23 and drive the bent steel wire 23 to move toward the clearance opening.

[0032] By adopting the above technical solution, the clearance on the limiting plate 14 provides a directional outlet for the bent steel wire 23. With the pushing action of the bending knife 12, the bending part can directly guide the steel wire 23 to the steel wire clamping assembly 2 after the bending is completed, realizing the integration of bending and transfer processes and reducing the time loss of intermediate transfer links.

[0033] Please refer to Figure 1 and Figure 2 The bending assembly 1 further includes: a first guide wheel 17, which is rotatably disposed on the side of the limiting plate 14 near the wire clamping assembly 2, and a first limiting groove is provided on the side wall of the first guide wheel 17, extending along the circumferential direction of the first guide wheel 17 to form a continuous annular structure; and a second guide wheel 18, which is rotatably disposed on the side of the limiting plate 14 near the wire clamping assembly 2, and is spaced apart from the first guide wheel 17 in the vertical direction, and has a second limiting groove on the second guide wheel 18, extending along the circumferential direction of the first guide wheel 17. The direction extends to form a continuous ring structure; the first limiting groove and the second limiting groove are arranged opposite to each other, and both the first limiting groove and the second limiting groove are arranged corresponding to the clearance opening; wherein, when the bending cutter 12 pushes the steel wire 23 out from the clearance opening, the steel wire 23 is bent under the limiting action of the first limiting groove on the first guide wheel 17 and the second limiting groove on the second guide wheel 18; and when the bending cutter 12 drives the bent steel wire 23 to move toward the clearance opening, the bent steel wire 23 is guided; the limiting plate 14, the first guide wheel 17, and the second guide wheel 18 form the limiting part of the steel wire 23.

[0034] By adopting the above technical solution, the first guide wheel 17 and the second guide wheel 18 form a closed-loop guiding structure through the first limiting groove and the second limiting groove, which applies radial constraint to the steel wire 23 during the bending process to prevent twisting deformation caused by stress concentration at the bending point; at the same time, the interval arrangement of the two guide wheels forms a progressive bending path, making the bending arc of the steel wire 23 more uniform and improving the bending forming quality.

[0035] Please refer to Figure 1 and Figure 2 The wire bending mechanism also includes a cutting assembly 19, which includes a drive member 20 that extends and retracts along the extension direction of the limiting plate 14, the drive member 20 being mounted on the mounting bracket 4 and located above the limiting plate 14; and a cutting head 21 that is mounted on the extension end of the drive member 20 and is used to cut the wire 23.

[0036] By adopting the above technical solution, the cutting component 19 drives the cutting head 21 to perform synchronous cutting action through the driving component 20, which can cut the steel wire 23 immediately after bending, realize continuous automated processing of bending-feeding-cutting, avoid the process of separate cutting in traditional processes, and significantly shorten the production cycle.

[0037] Specifically, the drive component 20 is preferably a cylinder, but it can also be an electric push rod, a hydraulic rod, etc.

[0038] Please refer to Figure 1 and Figure 2 The wire clamping assembly 2 includes a clamping cylinder 22, which is used to clamp the wire 23 after bending by the bending assembly 1. The clamping cylinder 22 is spaced apart from the bending assembly 1.

[0039] By adopting the above technical solution, the clamping cylinder 22 and the bending component 1 are spaced apart to form a relay clamping station. When the bent steel wire 23 is pushed to the designated position, the clamping cylinder 22 closes quickly to complete the fixation, ensuring the stability of the positioning reference for subsequent processes (such as bristle implantation), and avoiding interference with the processed workpiece when the bending mechanism is reset.

[0040] A brush-making machine includes the above-mentioned wire bending mechanism.

[0041] By adopting the above technical solution and integrating the above wire bending mechanism into the brush making machine, fully automatic continuous production of products such as roller brushes and strip brushes can be realized. The modular design makes the equipment layout more compact, while reducing the coordination error between multiple processes, and ultimately improving the structural consistency and yield of brush products.

[0042] Working principle: Step 1: Wire feeding and limiting; The steel wire 23 is inserted vertically into the limiting channel 15 of the limiting plate 14 and is kept vertical by the constraint of the limiting channel 15 to ensure the precise alignment of the starting position of the bending. At this time, the bending knife 12 is in the avoidance state to avoid interference with the moving steel wire 23.

[0043] Step 2: Cut components simultaneously; The drive unit 20 of the cutting assembly 19 is activated, pushing the cutting head 21 to move and cut the steel wire 23 that has entered the limit channel 15; after the cutting is completed, the drive unit 20 is reset.

[0044] Step 3: The servo motor drives the bending action; The servo motor 5 starts and drives the moving plate 11 to slide along the slider 10 toward the wire clamping assembly 2 through the transmission of the drive gear 6, the toothed belt 8 and the toothed plate 9; the bending knife 12 fixed on the moving plate 11 moves synchronously, and its bending end switches from the avoidance state to the feeding state, applying a lateral thrust to the stationary wire 23 and bending the wire 23 into a U-shape.

[0045] Step 4: Forming of the bending section in conjunction with the guide roller; The bending blade 12 pushes the steel wire 23 through the clearance opening of the limiting plate 14. The first limiting groove of the first guide wheel 17 and the second limiting groove of the second guide wheel 18 form a closed loop guide for the steel wire 23, so that a uniform arc is generated at the bending point. The bending blade 12 continues to move forward and pushes the bent steel wire 23 to the preset clamping position of the steel wire clamping assembly 2.

[0046] Step 5: Use a clamping cylinder to fix the workpiece; When the bent steel wire 23 reaches the clamping area of ​​the clamping cylinder 22, the clamping cylinder 22 closes quickly and firmly clamps the bent end of the steel wire 23, providing a positioning reference for subsequent brush implantation or assembly processes; at this time, the bending knife 12 switches to the avoidance state.

[0047] Step 6: Mechanism reset and cycle; The servo motor 5 rotates in the opposite direction, driving the moving plate 11 and bending knife 12 back to the initial position via the toothed belt 8; the clamping cylinder 22 is released, the cutting head 21 is reset, and the unprocessed steel wire 23 in the limit channel 15 automatically falls to the next bending starting point and enters the next processing cycle.

[0048] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0049] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0050] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0051] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0052] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A wire bending mechanism, characterized in that, include: A bending assembly (1) is used to bend the steel wire (23); A wire clamping assembly (2) is disposed on one side of the bending assembly (1) and is used to clamp the wire (23) after it has been bent by the bending assembly (1). The motor drive assembly (3) is connected to the bending assembly (1) to drive the bending assembly (1) to bend the steel wire (23) and send the bent steel wire (23) to the steel wire clamping assembly (2).

2. The wire bending mechanism according to claim 1, characterized in that, The wire bending mechanism further includes: a mounting frame (4), which is mounted on a mounting reference; The motor drive assembly (3) includes a motor drive unit and a transmission unit. The motor drive unit is disposed on the mounting bracket (4). The transmission unit is connected to the motor drive unit and the bending assembly (1) respectively. The motor drive unit drives the bending assembly (1) to move through the transmission unit so that the bending assembly (1) bends the steel wire (23) and sends the bent steel wire (23) to the steel wire clamping assembly (2).

3. The wire bending mechanism according to claim 2, characterized in that, The motor drive assembly (3) also includes: Servo motor (5), which is mounted on mounting bracket (4); The drive gear (6) is driven and connected to the output end of the servo motor (5); Driven gear (7), the driven gear (7) is spaced apart from the driving gear (6) along the width direction of the mounting frame (4), and the driven gear (7) is rotatably mounted on the mounting frame (4); A toothed belt (8) is sleeved on the driving gear (6) and the driven gear (7). The toothed belt (8) is connected to the driving gear (6) and the driven gear (7) respectively, so as to drive the toothed belt (8) to move through the driving gear (6) and drive the driven gear (7) to rotate. A toothed plate (9) is mounted on the toothed belt (8) and the toothed plate (9) is located on the outer wall of the toothed belt (8). The toothed plate (9) is connected to the bending assembly (1). The toothed belt (8) drives the bending assembly (1) to reciprocate through the toothed plate (9). The servo motor (5) forms the motor drive unit; the driving gear (6), the driven gear (7), the toothed belt (8), and the toothed plate (9) form the transmission unit.

4. The wire bending mechanism according to claim 2, characterized in that, The bending assembly (1) includes a wire limiting part and a wire bending part. The wire (23) limiting part has a limiting channel (15). The limiting channel (15) extends in the vertical direction. The wire (23) passes through the limiting channel (15) along the extension direction of the limiting channel (15) to limit the wire (23). The wire bending part is movably arranged along the width direction of the mounting frame (4). The bent end of the wire bending part is located at the bottom of the limiting channel (15). The wire bending part is used to bend the limited wire (23) and send the bent wire (23) to the wire clamping assembly (2).

5. The wire bending mechanism according to claim 4, characterized in that, The bending assembly (1) includes: A slider (10) extends along the width direction of the mounting bracket (4) and is mounted on the mounting bracket (4); A movable plate (11) is movably disposed on the slider (10) along the extending direction of the slider (10). The movable plate (11) is connected to the transmission part so as to drive the movable plate (11) to slide on the slider (10) through the transmission part. A bending blade (12) is mounted on the moving plate (11). The extension direction of the bending blade (12) is perpendicular to the extension direction of the moving plate (11). The bending end of the bending blade (12) protrudes from the moving plate (11) and is located at the bottom of the limiting channel (15). The bending blade (12) bends the wire (23) after it is limited. The bending blade (12) pushes the bent wire (23) toward the wire clamping assembly (2) in a feeding state and a avoidance state to avoid the wire (23). A fixing block (13) is disposed on the movable plate (11) for fixing the bending knife (12) on the movable plate (11); When the wire (23) is in a moving state, the bending knife (12) is in the avoidance state; when the wire (23) is in a stationary state, the bending knife (12) is in the feeding state.

6. The wire bending mechanism according to claim 5, characterized in that, The bending assembly (1) includes: A limiting plate (14) extends along the extension direction of the slider (10). A limiting channel (15) and a clearance opening communicating with the limiting channel (15) are provided on the limiting plate (14). The limiting channel (15) extends along the height direction of the limiting plate (14). The limiting channel (15) is used to limit the steel wire (23). The clearance opening is located on the side of the limiting plate (14) close to the steel wire clamping assembly (2). When the steel wire (23) passes through the limiting channel (15), the steel wire bending part is used to bend the limited steel wire (23) and drive the bent steel wire (23) to move toward the clearance opening.

7. The wire bending mechanism according to claim 6, characterized in that, The bending assembly (1) further includes: The first guide wheel (17) is rotatably disposed on the side of the limiting plate (14) near the wire clamping assembly (2). A first limiting groove is provided on the side wall of the first guide wheel (17). The first limiting groove extends along the circumferential direction of the first guide wheel (17) to form a continuous ring structure. The second guide wheel (18) is rotatably disposed on the side of the limiting plate (14) near the wire clamping assembly (2). The second guide wheel (18) is disposed vertically at intervals from the first guide wheel (17). The second guide wheel (18) is provided with a second limiting groove. The first limiting groove extends along the circumferential direction of the second guide wheel (18) to form a continuous annular structure. The first limiting groove and the second limiting groove are disposed opposite to each other, and both the first limiting groove and the second limiting groove are disposed corresponding to the clearance opening. When the bending cutter (12) pushes the steel wire (23) out of the clearance opening, the steel wire (23) is bent by the limiting action of the first limiting groove on the first guide wheel (17) and the second limiting groove on the second guide wheel (18); and when the bending cutter (12) drives the bent steel wire (23) to move toward the clearance opening, the bent steel wire (23) is guided; the limiting plate (14), the first guide wheel (17), and the second guide wheel (18) form the limiting part of the steel wire (23).

8. The wire bending mechanism according to claim 6, characterized in that, The wire bending mechanism further includes a cutting assembly (19), which comprises: A driving member (20) extends and retracts along the extension direction of the limiting plate (14), the driving member (20) is mounted on the mounting bracket (4), and the driving member (20) is located above the limiting plate (14); A cutting head (21) is mounted on the telescopic end of the drive member (20) and is used to cut the steel wire (23).

9. The wire bending mechanism according to claim 2, characterized in that, The wire clamping assembly (2) includes: A clamping cylinder (22) is used to clamp the steel wire (23) after the bending assembly (1) is bent; the clamping cylinder (22) is spaced apart from the bending assembly (1).

10. A brush-making machine, characterized in that, The steel wire bending mechanism includes any one of claims 1 to 9.

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