A wire feeding and cutting mechanism

Abstract

This utility model discloses a wire feeding and cutting mechanism, belonging to the field of wire cutting. The mechanism includes a frame, and a tensioning component, a wire feeding component, and a cutting component disposed on the frame. The wire feeding component is located between the tensioning component and the cutting component. The wire feeding component includes a spacing adjustment component and two sets of wire feeding wheels. Both sets of wire feeding wheels are slidably connected to the frame and arranged vertically opposite each other. The spacing adjustment component has two adjustment ends, and the two sets of wire feeding wheels are respectively connected to the two adjustment ends. This utility model's wire feeding and cutting mechanism integrates the tensioning, wire feeding, and cutting components into the frame, achieving equipment miniaturization. Through the pre-guiding and tension adjustment of the tensioning component and the control of the spacing between the wire feeding wheels by the spacing adjustment component, it ensures accurate feeding and cutting of wires of different thicknesses or diameters, and applies a consistent force to the wires.

Description

Technical Field

[0001] This utility model belongs to the field of wire cutting, and in particular relates to a wire feeding and cutting mechanism. Background Technology

[0002] With the widespread use of electronic products, the demand for various data cables, connectors, and other cables is becoming increasingly diversified and large-scale. Against this backdrop, the cable feeding and cutting mechanism, as a crucial link in the cable processing, has a vital impact on the efficiency and quality of the entire production process.

[0003] Existing wire feeding and cutting mechanisms generally have several shortcomings. First, in terms of equipment size, many traditional wire feeding and cutting devices are independently set up, resulting in a large overall structure. This not only occupies a significant amount of production space, reducing the efficiency of production site utilization, but also presents numerous difficulties in the installation and use of large equipment in space-constrained production environments, such as small factories or laboratories. Furthermore, the large size of the equipment also increases the difficulty and cost of transportation and maintenance.

[0004] Secondly, in terms of compatibility, traditional wire feeding and cutting mechanisms struggle to meet the demands of processing wires of varying specifications. In actual production, electronic products utilize a wide variety of wire specifications, including data cables and connectors, with different thicknesses and diameters widely used. However, most traditional mechanisms are designed to feed and cut only a single or limited number of wire specifications. When processing wires of different thicknesses or diameters is required, it often necessitates replacing the entire equipment or performing complex and time-consuming mechanical adjustments. This severely impacts production efficiency, increases production costs, and hinders the ability to quickly respond to market demands for diverse products. Utility Model Content

[0005] The purpose of this invention is to provide a wire feeding and cutting mechanism to overcome at least one of the above-mentioned defects in the prior art.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The present invention provides a wire feeding and cutting mechanism, including a frame, and a tensioning component, a wire feeding component and a cutting component disposed on the frame. The wire feeding component is located between the tensioning component and the cutting component. The wire feeding component includes a spacing adjustment component and two sets of wire feeding wheels. The two sets of wire feeding wheels are slidably connected to the frame and are arranged vertically opposite each other. The spacing adjustment component has two adjustment ends, and the two sets of wire feeding wheels are respectively connected to the two adjustment ends.

[0008] Preferably, it also includes a first synchronous belt, a first synchronous pulley, a second synchronous pulley, and a first motor. The first motor is fixed to the frame, and the output end of the first motor is fixed with a first synchronous pulley. Each set of wire feeding pulleys is fixed with a second synchronous pulley. The first synchronous pulley and the second synchronous pulley are connected by a first synchronous belt drive.

[0009] Preferably, it further includes a first guide rail, a first slider, a stop block, a spring, and a first tension wheel; the first guide rail and the stop block are both fixed to the frame, the first slider is slidably connected to the first guide rail, the first tension wheel is rotatably connected to the first slider, the first synchronous belt passes around the first tension wheel, one end of the first slider is connected to a spring, and one end of the spring is connected to the stop block.

[0010] Preferably, the wire feeder assembly includes a first mounting base, a third synchronous pulley, a fourth synchronous pulley, and a second synchronous belt. The third and fourth synchronous pulleys are rotatably connected to the first mounting base, and the third and fourth synchronous pulleys are connected by a second synchronous belt drive.

[0011] Preferably, the first synchronous belt is a double-sided toothed synchronous belt, and the second synchronous belt is a single-sided toothed synchronous belt.

[0012] Preferably, it further includes a second guide rail and a second slider, the frame is fixed with the second guide rail, the second guide rail is slidably connected to the second slider, and the first mounting base is fixed to the second slider.

[0013] Preferably, the spacing adjustment component includes a second motor, a bidirectional ball screw, and a bearing housing. The second motor and the bearing housing are both fixed to the frame. One end of the bidirectional ball screw is connected to the second motor, and the other end of the bidirectional ball screw is inserted into the bearing housing. Two sets of wire feeding wheels are respectively connected to the two adjustment ends of the bidirectional ball screw.

[0014] Preferably, the tensioning assembly includes a second mounting base, a first telescopic cylinder, a third guide rail, a third slider, a movable base, a fixed base, a second tensioning wheel, bolts, nuts, and a first wire guide seat. The second mounting base is fixed to the frame. The first telescopic cylinder, the third guide rail, the fixed base, and the first wire guide seat are all detachably fixed to the second mounting base. The first wire guide seat is located on the side of the fixed base away from the wire feeding assembly. The third slider is slidably connected to the third guide rail. The movable base is fixed to the third slider. The telescopic end of the first telescopic cylinder is connected to the movable base. The movable base and the fixed base are arranged vertically opposite each other. Both the movable base and the fixed base are laterally rotatably connected with a plurality of second tensioning wheels. The second tensioning wheels of the movable base and the second tensioning wheels of the fixed base are staggered. The fixed base has a threaded hole through which the bolt passes and is arranged opposite to the movable base. The nut is screwed onto the bolt and is located on the side of the fixed base away from the movable base.

[0015] Preferably, the cutting assembly includes a third mounting base, a second telescopic cylinder, a blade holder, a cross roller guide rail, a cutter, and a second thread guide seat. The frame is fixed with the third mounting base and two second telescopic cylinders, which are arranged vertically. The telescopic end of each second telescopic cylinder is connected to a blade holder. The cutter is mounted on the blade holder, which is mounted on the third mounting base via the cross roller guide rail. The second thread guide seats can be detachably fixed on both sides opposite the cutter.

[0016] Preferably, the device further includes a third wire guide, an infrared transmitter, an infrared receiver, and a controller. The third wire guide is detachably fixed to the frame and is located between the tensioning assembly and the wire feeding wheel assembly. The third wire guide has a horizontal through hole and a vertical through hole. The horizontal through hole penetrates the left and right side walls of the third wire guide, and the vertical through hole penetrates the upper and lower side walls of the third wire guide and communicates with the horizontal through hole. An infrared transmitter and an infrared receiver are fixed to the upper and lower side walls of the third wire guide, respectively. The infrared light emitted by the infrared transmitter passes through the vertical through hole. The infrared receiver is electrically connected to the controller, and the controller is electrically connected to the tensioning assembly, the wire feeding assembly, and the cutting assembly.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. The tensioning, wire feeding, and cutting components are integrated into the frame to achieve equipment miniaturization. The spacing of the wire feeding wheel group is controlled by the pre-guiding and tension adjustment of the tensioning component and the spacing adjustment component to ensure accurate feeding and cutting of wires of different thicknesses or diameters, and to apply a consistent force to the wires.

[0019] 2. By combining the first tensioning pulley with the spring, the tension of the first synchronous belt is adjusted when the distance between the two sets of wire feeding pulleys is adjusted, so as to avoid the first synchronous belt being over-tensioned and increase the service life of the first synchronous belt.

[0020] 3. By using a bidirectional ball screw in conjunction with a second motor, the wire feeding wheel group can simultaneously move towards the center and move away from each other, providing precise and convenient control over the opening and closing of the wire feeding wheel group, and maintaining the centered clamping and conveying of the wire.

[0021] 4. The distance between the moving seat and the fixed seat is adjusted by the first telescopic cylinder, thereby changing the distance between the upper and lower sets of second tensioning rollers, thus adjusting the tension of the wire to adapt to the tension of wires of different thicknesses or diameters.

[0022] 5. By using bolts and nuts, the downward movement distance of the moving seat is limited to prevent the second tensioning wheel on the moving seat from excessively pressing the wire and to ensure wire feeding accuracy.

[0023] 6. By setting up the first wire guide, the second wire guide, and the third wire guide, the wire is ensured to be fed horizontally, and the cutting surface is guaranteed to be horizontal.

[0024] 7. By using an infrared transmitter and receiver, the system can detect in real time whether any wires are passing through, preventing the equipment from continuing to perform wire feeding and cutting operations when there are no wires. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram (first-person perspective) of the present invention.

[0026] Figure 2 This is a three-dimensional structural schematic diagram of the present invention (second perspective).

[0027] Figure 3 This is a schematic diagram of the main structure of this utility model.

[0028] Figure 4 This is a three-dimensional structural diagram of the second guide rail and the second slider of this utility model.

[0029] Figure 5 This is a three-dimensional structural diagram of the tensioning component of this utility model.

[0030] Figure 6 This is a three-dimensional structural diagram of the cutting component of this utility model.

[0031] Figure 7 This is a three-dimensional exploded view of the third wire guide, infrared transmitter, and infrared receiver of this utility model.

[0032] Figure 8 This is the control block diagram of this utility model.

[0033] The labels in the attached diagram are as follows: 1-Frame, 2-Tensioning assembly, 3-Wire feeding assembly, 4-Cutting assembly, 31-Gap adjustment component, 32-Wire feeding wheel set, 5-First synchronous belt, 6-First synchronous pulley, 7-Second synchronous pulley, 8-First motor, 9-First guide rail, 10-First slider, 11-Stop, 12-Horizontal through hole, 13-Vertical through hole, 14-Spring, 15-First tension wheel, 321-First mounting base, 322-Third synchronous pulley, 323-Fourth synchronous pulley, 324-Second synchronous belt, 16-Second guide rail, 17-Second slider, 311-Second synchronous belt Motor, 312-Bidirectional ball screw, 313-Bearing housing, 21-Second mounting base, 22-First telescopic cylinder, 23-Third guide rail, 24-Third slider, 25-Moving seat, 26-Fixed seat, 27-Second tension wheel, 28-Bolt, 29-Nut, 210-First wire guide seat, 211-Threaded hole, 41-Third mounting base, 42-Second telescopic cylinder, 43-Tool holder, 44-Cross roller guide rail, 45-Cutter, 46-Second wire guide seat, 18-Third wire guide seat, 19-Infrared transmitter, 110-Infrared receiver, 111-Controller. Detailed Implementation

[0034] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0035] Contents not described in detail in this specification are existing technologies known to those skilled in the art. In the description of this utility model, it should be understood that terms such as "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model. Furthermore, terms such as "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] like Figures 1 to 8 As shown, this embodiment provides a wire feeding and cutting mechanism, including a frame 1, and a tensioning assembly 2, a wire feeding assembly 3, and a cutting assembly 4 disposed on the frame 1. The wire feeding assembly 3 is located between the tensioning assembly 2 and the cutting assembly 4. The wire feeding assembly 3 includes a spacing adjustment component 31 and two sets of wire feeding wheel sets 32. Both sets of wire feeding wheel sets 32 are slidably connected to the frame 1 and are arranged vertically opposite each other. The spacing adjustment component 31 has two adjustment ends, and the two sets of wire feeding wheel sets 32 are respectively connected to the two adjustment ends. By integrating the tensioning assembly 2, the wire feeding assembly 3, and the cutting assembly 4 into the frame 1, compared with the traditional separate mechanism, a large amount of space can be saved, the equipment can be miniaturized, and the transportation cost and installation complexity of the equipment can be reduced. After passing through the tensioning assembly 2, the wire is fed to the cutting assembly 4 through the wire feeding assembly 3 for cutting. The tensioning assembly 2 provides pre-guidance and auxiliary tension adjustment to accommodate precise wire feeding and cutting operations of wires with different thicknesses or diameters. This avoids wire slippage due to insufficient tension or wire damage due to excessive tension, ensuring horizontal wire transport. Furthermore, the spacing adjustment component 31 adjusts the distance between the upper and lower sets of wire feeding rollers 32, controlling the clamping degree of the wire to effectively transport wires of different thicknesses or diameters. Regardless of the wire's thickness or diameter, the same force is applied to the wire.

[0037] The system also includes a first synchronous belt 5, a first synchronous pulley 6, a second synchronous pulley 7, and a first motor 8. The first motor 8 is fixed to the frame 1, and the first synchronous pulley 6 is fixed to the output end of the first motor 8. Each set of wire feeding pulleys 32 is fixed with a second synchronous pulley 7. The first synchronous pulley 6 and the second synchronous pulley 7 are connected by the first synchronous belt 5. When the first motor 8 rotates, it drives the first synchronous pulley 6 and the second synchronous pulley 7 to rotate through the first synchronous belt 5, causing the two sets of wire feeding pulleys 32 to rotate and perform wire feeding operations.

[0038] The system includes a first guide rail 9, a first slider 10, a stop block 11, a spring 14, and a first tensioning wheel 15. The first guide rail 9 and the stop block 11 are fixed to the frame 1. The first slider 10 is slidably connected to the first guide rail 9. The first tensioning wheel 15 is rotatably connected to the first slider 10. The first synchronous belt 5 passes over the first tensioning wheel 15. The left end of the first slider 10 is connected to the spring 14, and the left end of the spring 14 is connected to the stop block 11. By combining the first tensioning wheel 15 with the spring 14, the tension of the first synchronous belt 5 is adjusted when the distance between the two sets of wire feeding wheels 32 is adjusted, preventing over-tensioning of the first synchronous belt 5 and increasing its service life.

[0039] The wire feeding wheel assembly 32 includes a first mounting base 321, a third synchronous pulley 322, a fourth synchronous pulley 323, and a second synchronous belt 324. The third synchronous pulley 322 and the fourth synchronous pulley 323 are rotatably connected to the first mounting base 321 via a rotating shaft, and are connected by the second synchronous belt 324. In this embodiment, the third synchronous pulley 322 is located to the left of the fourth synchronous pulley 323, and the second synchronous pulley 7 is fixedly connected to the rotating shaft of the third synchronous pulley 322. The second synchronous pulley 7 drives the third synchronous pulley 322 to rotate, and the second synchronous belt 324 drives the fourth synchronous pulley 323 to rotate, thus achieving wire feeding. Specifically, the distance between the upper and lower wire feeding wheel assemblies 32 is adjusted according to the wire thickness or diameter, so that the upper and lower second synchronous belts 324 approach each other to clamp the wire, and the rotation of the second synchronous belts 324 achieves wire feeding.

[0040] The first synchronous belt 5 is a double-sided toothed synchronous belt, and the second synchronous belt 324 is a single-sided toothed synchronous belt. Using a double-sided toothed synchronous belt as the first synchronous belt 5 ensures the transmission connection between the first synchronous pulley 6, the two second synchronous pulleys 7, and the first tension pulley 15. Using a single-sided toothed synchronous belt as the second synchronous belt 324 allows for the conveying of the wire through contact with its outer surface, without damaging the wire.

[0041] The system also includes a second guide rail 16 and a second slider 17. The frame 1 is fixed with the second guide rail 16, and the second slider 17 is slidably connected to the second guide rail 16. The first mounting base 321 is fixed to the second slider 17. Through the cooperation of the second guide rail 16 and the second slider 17, the up-and-down movement of the first mounting base 321 is made more stable, ensuring the smooth delivery of the wire.

[0042] The spacing adjustment component 31 includes a second motor 311, a bidirectional ball screw 312, and a bearing housing 313. Both the second motor 311 and the bearing housing 313 are fixed to the frame 1. The bottom end of the bidirectional ball screw 312 is connected to the second motor 311, and the top end of the bidirectional ball screw 312 is inserted into the bearing housing 313. Two sets of wire feeding rollers 32 are respectively connected to the two adjusting ends of the bidirectional ball screw 312. By using the bidirectional ball screw 312 in conjunction with the second motor 311, the wire feeding rollers 32 can simultaneously move closer together and simultaneously move away from each other, providing precise and convenient control over the opening and closing of the wire feeding rollers 32, and maintaining centered clamping and conveying of the wire. In this embodiment, both the first motor 8 and the second motor 311 are servo motors.

[0043] The tensioning assembly 2 includes a second mounting base 21, a first telescopic cylinder 22, a third guide rail 23, a third slider 24, a movable seat 25, a fixed seat 26, a second tensioning wheel 27, bolts 28, nuts 29, and a first wire guide 210. The second mounting base 21 is fixed to the frame 1. The first telescopic cylinder 22, the third guide rail 23, the fixed seat 26, and the first wire guide 210 are all detachably fixed to the second mounting base 21. The first wire guide 210 is located to the left of the fixed seat 26. The third slider 24 is slidably connected to the third guide rail 23. The movable seat 25 is fixed to the second mounting base 26. The three sliders 24 have their telescopic ends connected to the movable base 25 via the telescopic end of the first telescopic cylinder 22. The movable base 25 and the fixed base 26 are arranged vertically opposite each other, with the movable base 25 located above the fixed base 26. Both the movable base 25 and the fixed base 26 are laterally rotatably connected to several second tensioning rollers 27. The second tensioning rollers 27 of the movable base 25 and the second tensioning rollers 27 of the fixed base 26 are staggered. The fixed base 26 has a threaded hole 211, through which the top of a bolt 28 passes and is arranged opposite to the movable base 25. A nut 29 is screwed onto the bolt 28 and is located on the lower side of the fixed base 26. After the wire passes through the first wire guide 210, it passes through the gap between the upper and lower sets of second tensioning rollers 27 and enters the wire feeding assembly 3. The upper and lower sets of second tensioning rollers 27 provide initial guidance and auxiliary tensioning for the wire. Because the movable seat 25 can move up and down relative to the fixed seat 26 under the action of the first telescopic cylinder 22, the distance between it and the fixed seat 26 is changed, thereby changing the distance between the upper and lower sets of second tensioning rollers 27, thus adjusting the wire tension to adapt to wires of different thicknesses or diameters. The bolts 28 and nuts 29 are used to limit the downward movement of the movable seat 25, preventing the second tensioning rollers 27 on the movable seat 25 from excessively pressing the wire and ensuring wire feeding accuracy.

[0044] The cutting assembly 4 includes a third mounting base 41, a second telescopic cylinder 42, a blade holder 43, a cross roller guide rail 44, a cutter 45, and a second wire guide seat 46. The frame 1 is fixed with the third mounting base 41 and two second telescopic cylinders 42, which are arranged vertically. Each second telescopic cylinder 42 has a blade holder 43 connected to its telescopic end. The cutter 45 is mounted on the blade holder 43, which is mounted on the third mounting base 41 via the cross roller guide rail 44. The second wire guide seats 46 are detachably fixed to both sides of the cutter 45. The use of the cross roller guide rail 44 reduces space requirements and facilitates equipment miniaturization. The extension of the second telescopic cylinder 42 causes the upper and lower blade holders 43 to move closer together, which in turn causes the upper and lower cutters 45 to move closer together, thus achieving the wire cutting operation. The second wire guide seat 46 ensures that the wire passes horizontally through the gap between the upper and lower cutters 45, guaranteeing a horizontal cutting surface.

[0045] The system includes a third wire guide 18, an infrared transmitter 19, an infrared receiver 110, and a controller 111. The third wire guide 18 is detachably fixed to the frame 1 and is located between the tensioning assembly 2 and the wire feeding wheel assembly 32 at the wire feeding end. The third wire guide 18 has a horizontal through hole 12 and a vertical through hole 13. The horizontal through hole 12 penetrates the left and right side walls of the third wire guide 18, and the vertical through hole 13 penetrates the upper and lower side walls of the third wire guide 18 and communicates with the horizontal through hole 12. The infrared transmitter 19 and the infrared receiver 110 are respectively fixed to the upper and lower side walls of the third wire guide 18. The infrared light emitted by the infrared transmitter 19 passes through the vertical through hole 13. The infrared receiver 110 is electrically connected to the controller 111, and the controller 111 is electrically connected to the tensioning assembly 2, the wire feeding assembly 3, and the cutting assembly 4. After the wire passes through the tensioning assembly 2, it passes through the third wire guide 18 and then passes through the second synchronous belt 324. With the cooperation of infrared transmitter 19 and infrared receiver 110, it can detect in real time whether there is a wire passing through, and prevent the device from continuing to perform the wire feeding and cutting action when there is no wire. When there is no wire or the wire is broken, a stop signal is sent to controller 111, and controller 111 controls the wire feeding assembly 3 and the cutting assembly 4 to stop operating.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wire feeding and cutting mechanism, characterized in that: It includes a frame (1), and a tensioning assembly (2), a wire feeding assembly (3), and a cutting assembly (4) disposed on the frame (1); The wire feeding assembly (3) is located between the tensioning assembly (2) and the cutting assembly (4); The wire feeding assembly (3) includes a spacing adjustment component (31) and two sets of wire feeding wheel sets (32); Both sets of wire feeding wheel sets (32) are slidably connected to the frame (1) and are arranged vertically opposite each other; The spacing adjustment member (31) has two adjustment ends, and the two sets of wire feeding wheel sets (32) are respectively connected to the two adjustment ends.

2. The wire feeding and cutting mechanism according to claim 1, characterized in that: It also includes a first synchronous belt (5), a first synchronous pulley (6), a second synchronous pulley (7), and a first motor (8); The first motor (8) is fixed to the frame (1); The first synchronous pulley (6) is fixed at the output end of the first motor (8); Each of the wire feeding wheel groups (32) is fixed with a second synchronous wheel (7); The first synchronous pulley (6) and the second synchronous pulley (7) are connected by a first synchronous belt (5).

3. The wire feeding and cutting mechanism according to claim 2, characterized in that: It also includes a first guide rail (9), a first slider (10), a stop (11), a spring (14), and a first tensioning wheel (15); The first guide rail (9) and the stop block (11) are both fixed to the frame (1); The first slider (10) is slidably connected to the first guide rail (9); The first tensioning pulley (15) is rotatably connected to the first slider (10), and the first timing belt (5) passes around the first tensioning pulley (15); One end of the first slider (10) is connected to a spring (14), and one end of the spring (14) is connected to the stop block (11).

4. The wire feeding and cutting mechanism according to claim 2, characterized in that: The wire feeder assembly (32) includes a first mounting base (321), a third synchronous pulley (322), a fourth synchronous pulley (323), and a second synchronous belt (324); The third synchronous pulley (322) and the fourth synchronous pulley (323) are both rotatably connected to the first mounting base (321); The third synchronous pulley (322) and the fourth synchronous pulley (323) are connected by a second synchronous belt (324).

5. The wire feeding and cutting mechanism according to claim 4, characterized in that: The first synchronous belt (5) is a double-sided tooth synchronous belt, and the second synchronous belt (324) is a single-sided tooth synchronous belt.

6. The wire feeding and cutting mechanism according to claim 4, characterized in that: It also includes a second guide rail (16) and a second slider (17); The frame (1) is fixed with a second guide rail (16), and the second guide rail (16) is slidably connected with a second slider (17); The first mounting base (321) is fixed to the second slider (17).

7. The wire feeding and cutting mechanism according to claim 1, characterized in that: The pitch adjustment component (31) includes a second motor (311), a bidirectional ball screw (312), and a bearing housing (313); The second motor (311) and bearing housing (313) are both fixed to the frame (1); One end of the bidirectional ball screw (312) is connected to the second motor (311), and the other end of the bidirectional ball screw (312) is inserted into the bearing housing (313); The two sets of wire feed rollers (32) are respectively connected to the two adjusting ends of the bidirectional ball screw (312).

8. The wire feeding and cutting mechanism according to claim 1, characterized in that: The tensioning assembly (2) includes a second mounting base (21), a first telescopic cylinder (22), a third guide rail (23), a third slider (24), a movable base (25), a fixed base (26), a second tensioning wheel (27), a bolt (28), a nut (29), and a first wire guide (210); The second mounting base (21) is fixed to the frame (1); The first telescopic cylinder (22), the third guide rail (23), the fixed seat (26), and the first wire guide seat (210) can all be detachably fixed to the second mounting seat (21); The first wire guide (210) is located on the side of the fixed base (26) away from the wire feeding assembly (3); The third slider (24) is slidably connected to the third guide rail (23), and the movable seat (25) is fixed to the third slider (24); The telescopic end of the first telescopic cylinder (22) is connected to the movable seat (25); The movable seat (25) and the fixed seat (26) are arranged vertically opposite each other; Both the movable seat (25) and the fixed seat (26) are laterally rotatably connected with a number of second tensioning rollers (27); The second tensioning wheel (27) of the movable seat (25) and the second tensioning wheel (27) of the fixed seat (26) are misaligned; The fixed seat (26) has a threaded hole (211), the bolt (28) passes through the threaded hole (211) and is disposed opposite to the movable seat (25), and the nut (29) is screwed to the bolt (28) and is located on the side of the fixed seat (26) away from the movable seat (25).

9. The wire feeding and cutting mechanism according to claim 1, characterized in that: The cutting assembly (4) includes a third mounting base (41), a second telescopic cylinder (42), a blade holder (43), a cross roller guide (44), a cutter (45), and a second wire guide (46); The frame (1) is fixed with a third mounting base (41) and two second telescopic cylinders (42), which are arranged vertically. Each of the telescopic ends of the second telescopic cylinder (42) is connected to a knife holder (43), and the cutter (45) is disposed on the knife holder (43); The tool holder (43) is mounted on the third mounting base (41) via a cross roller guide (44); The cutter (45) has a second wire guide (46) that can be detachably fixed on both sides opposite to it.

10. The wire feeding and cutting mechanism according to claim 1, characterized in that: It also includes a third cable connector (18), an infrared transmitter (19), an infrared receiver (110), and a controller (111); The third wire guide (18) is detachably fixed to the frame (1) and is located between the tensioning assembly (2) and the wire feeding end of the wire feeding wheel assembly (32); The third wire guide (18) has a horizontal through hole (12) and a vertical through hole (13). The horizontal through hole (12) penetrates the left and right side walls of the third wire guide (18), and the vertical through hole (13) penetrates the upper and lower side walls of the third wire guide (18) and communicates with the horizontal through hole (12). An infrared transmitter (19) and an infrared receiver (110) are fixed on the upper and lower side walls of the third wire guide (18), respectively. The infrared light emitted by the infrared transmitter (19) passes through the vertical through hole (13). The infrared receiver (110) is electrically connected to the controller (111), and the controller (111) is electrically connected to the tensioning assembly (2), the wire feeding assembly (3), and the cutting assembly (4).

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