Wire shearing type automatic wire connecting structure

Abstract

The utility model discloses a wire shearing type automatic wire connecting structure which comprises a base, and a wire cylinder assembly, a clamping and conveying mechanism, an upper wire penetrating mechanism and a lower wire penetrating mechanism are arranged on the base. The wire cylinder assembly comprises a wire cylinder, a wire feeding motor and an angle detection device, and the angle detection device can detect the rotation angle of the wire feeding motor; the wire cutting type automatic wire connecting structure further comprises a wire cutting assembly and a wire head detection assembly, the wire head detection assembly is used for detecting whether the wire head reaches the wire head detection position or not, the wire cutting assembly is used for cutting off the redundant length of the wire head of the electrode wire, and the wire head detection assembly is in signal connection with the wire feeding motor, the angle detection device and the wire cutting assembly. Through cooperation of the wire head detection assembly, the wire feeding motor, the angle detection device and the wire shearing assembly, the length of the electrode wire can be reduced for compensation, the wire head of the trimmed electrode wire is in butt joint with the wire clamping piece, and therefore automatic wire connection can be achieved when the electrode wire is too long or too short.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting machine technology, and in particular to a wire-cutting automatic wire splicing structure. Background Technology

[0002] Wire EDM is a machining method that uses a moving metal wire (molybdenum wire, copper wire, or alloy wire) as the electrode wire. Pulsed electric sparks between the electrode wire and the workpiece generate high temperatures that melt or vaporize the metal, creating a kerf and thus cutting the part. When the electrode wire needs to pass through the workpiece, the wire end must first be detached from the wire spool, then the wire is passed through the workpiece, and finally the wire end is reconnected to the wire spool to form a closed loop. However, during machining, the electrode wire may be stretched or worn, causing the wire end to be too long or too short relative to the wire clamp on the wire spool. If the wire is too long, it will become loose after reconnection; if it is too short, it will not be able to connect to the wire spool. In addition, when the wire is repeatedly threaded and unthreaded a certain number of times, the electrode wire may crack or bend, causing threading failure. The current operation requires manually cutting off the damaged electrode. Since the length cut by the operator is random, the accurate length cannot be fed back to the system. If the cut wire is too long or too short, or if the wire is cut repeatedly, the wire cutter cannot meet the length compensation, and the operator needs to reposition the length.

[0003] Existing wire EDM machines can automatically disconnect, thread, and splice electrode wires. When the electrode wire is too long or too short, they adjust the wire length through a dynamic wire storage adjustment mechanism to change the position of the wire end relative to the wire spool clamp, thus achieving splicing. There are other research and development directions regarding the automatic wire splicing structure. Those skilled in the art hope for another automatic wire splicing structure that can also automatically splice wires when they are too long or too short. Utility Model Content

[0004] The main purpose of this invention is to propose a wire-cutting automatic wire splicing structure, providing another structure that can automatically splice wires when the electrode wire is too long or too short.

[0005] To achieve the above objectives, this utility model proposes a wire-cutting automatic wire splicing structure, including a base, on which a wire spool assembly, a clamping mechanism, an upper wire threading mechanism, and a lower wire threading mechanism are arranged in sequence. The wire spool assembly, the clamping mechanism, the upper wire threading mechanism, and the lower wire threading mechanism form a wire conveying path. The clamping mechanism is used to clamp and convey the electrode wire. A processing station is provided between the upper wire threading mechanism and the lower wire threading mechanism.

[0006] The wire drum assembly includes a wire drum, a wire feeding motor, and an angle detection device. The wire drum is rotatably connected to the base. The wire drum is provided with a wire clamp for clamping or releasing the wire end of the electrode wire. The wire feeding motor is fixedly connected to the base and is drivenly connected to the wire drum. The angle detection device can detect the rotation angle of the wire feeding motor.

[0007] The automatic wire splicing structure also includes a wire cutting component and a wire end detection component. The conveying path includes a wire end detection position and a wire cutting position. The wire end detection component is located beside the wire end detection position and is used to detect whether the wire end has reached the wire end detection position. The wire cutting component is located beside the wire cutting position and is used to cut off the excess length of the electrode wire end. The wire end detection component is signal connected to the wire feeding motor, the angle detection device, and the wire cutting component. The wire end detection component, the wire feeding motor, the angle detection device, and the wire cutting component work together to reduce the length of the electrode wire so that the trimmed electrode wire end can be compensated and connected to the wire clamping component.

[0008] During wire splicing, the wire feeding motor drives the wire drum to rotate and feed out the electrode wire. The angle detection device detects the angle of the wire drum, and the wire end detection component detects the position of the wire end. Based on the position of the wire end and the angle of the wire drum, the distance difference between the wire end and the wire clamping component can be determined. Then, the wire drum rotates according to this distance difference to feed out the corresponding compensation length of electrode wire. The wire cutting component cuts off this compensation length of electrode wire, and the remaining length of electrode wire can be connected to the wire clamping component. Then, the wire drum rotates, and the wire clamping component rotates to the wire splicing angle. The wire end moves exactly to the position of the wire clamping component, and the wire clamping component clamps the wire end, realizing the connection between the wire end and the wire clamping component. This invention, through the cooperation of a wire end detection component, a wire feeding motor, an angle detection device, and a wire cutting component, can reduce the length of the electrode wire to compensate for the loss of length. This allows the trimmed wire end to align with the wire clamping component, thus enabling automatic wire splicing even when the electrode wire is too long or too short. Furthermore, by accurately detecting the position of the wire end, feeding a more precise wire length, and automatically cutting, the position of the wire end can be accurately controlled without operator intervention, improving the efficiency of wire disassembly, threading, and splicing, and simplifying the operation.

[0009] Preferably, both the yarn end detection component and the yarn cutting component are located on the side of the yarn bobbin assembly near the lower yarn threading mechanism; alternatively, the yarn end detection component is located below the upper yarn threading mechanism, and the yarn cutting component is located below the upper yarn threading mechanism and / or on the side of the yarn bobbin assembly near the lower yarn threading mechanism. The yarn end detection component can be located on the side of the yarn bobbin near the lower yarn threading mechanism or below the upper yarn threading mechanism, and can be detected when the yarn end moves to the position of the yarn end detection component.

[0010] Preferably, the thread detection component is an infrared sensor, a photoelectric sensor, or a vision detector. The thread detection component can detect the thread using a non-contact detection method with an infrared sensor, photoelectric sensor, or vision detector.

[0011] Preferably, the wire end detection assembly includes a detection drive unit and a conductive detection element. The detection drive unit is disposed on the base, and the conductive detection element is tractively connected to the detection drive unit. The detection drive unit can drive the conductive detection element into or away from the conveying path. When the conductive detection element enters the conveying path, it can contact the wire end to detect the wire end. The wire end detection assembly can detect the wire end through the contact between the conductive detection element and the wire end. The detection drive unit drives the conductive detection element into the conveying path. After the wire end touches the conductive detection element, the conductive detection element conducts electricity, thereby detecting the wire end. After detection, the detection drive unit drives the conductive detection element away from the conveying path, and the electrode wire can move.

[0012] Preferably, the wire cutting assembly includes a wire cutting cylinder and two wire cutting blades. The wire cutting blades are connected to the wire cutting cylinder in a driving connection, and the wire cutting cylinder can drive the two wire cutting blades to move closer to each other or further away from each other to cut wires.

[0013] Preferably, the wire cutting assembly further includes a wire cutting movement drive mechanism, wherein the wire cutting cylinder and the wire cutting blade are disposed on the moving end of the wire cutting movement drive mechanism, and the wire cutting movement drive mechanism can drive the wire cutting blade into or away from the conveying path.

[0014] Preferably, the wire-cutting automatic wire splicing structure further includes a horizontally arranged wire guide tube, which is located between the wire spool and the lower wire feeding mechanism, and is positioned to match the wire clamping member. The wire guide tube can guide and restrict the position of the electrode wire, allowing the electrode wire and wire end to be conveyed to the wire spool assembly.

[0015] Preferably, the wire clamp is a spring clip structure, and the wire-cutting automatic wire splicing structure further includes a catheter driving mechanism. The catheter driving mechanism is connected to the guide wire tube in a driving connection. The catheter driving mechanism can drive the guide wire tube to move closer to the wire clamp to open the wire clamp or move away from the wire clamp to close the wire clamp.

[0016] Preferably, the wire clamp is movably connected to the wire spool, a return spring is connected between the wire clamp and the wire spool, and a pressing drive mechanism is also provided on the base. The pressing drive mechanism is positioned to match the wire clamp, and the pressing drive mechanism can press the wire clamp to open it. The return spring can reset the wire clamp to close.

[0017] Preferably, the end of the guide tube is located close to the wire clamp.

[0018] Preferably, the wire-cutting automatic wire splicing structure further includes a broken wire collection device, which is located beside the wire-cutting assembly and is used to collect the cut electrode wires. When the wire-cutting assembly cuts the electrode wire, the broken wire is collected by the broken wire collection device to prevent the broken wires from flying around and affecting subsequent wire splicing and operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the automatic wire splicing structure of the wire cutting type of this utility model when the wire end moves to the position of the wire end detection component in one embodiment.

[0021] Figure 2 This is a schematic diagram of the structure when the wire head moves to the position of the wire cutting component in one embodiment of the automatic wire splicing structure of the present utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the wire-cutting component when it cuts the electrode wire in one embodiment of the wire-cutting automatic wire splicing structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure when the wire end is connected to the wire clamping component in one embodiment of the automatic wire splicing structure of the wire cutting type of this utility model.

[0024] Figure 5 This is a schematic diagram of the wire-cutting assembly of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure when the wire end moves to the position of the wire end detection component in another embodiment of the wire-cutting automatic wire splicing structure of this utility model.

[0026] Figure 7 This is a schematic diagram of the structure when the wire head moves to the position of the wire cutting component in another embodiment of the automatic wire splicing structure of the present invention.

[0027] Figure 8 This is a schematic diagram of the structure of the wire-cutting component when it cuts the electrode wire, which is another embodiment of the automatic wire splicing structure of the present invention.

[0028] Figure 9This is a schematic diagram of the structure when the wire end is connected to the wire clamping component in another embodiment of the automatic wire splicing structure of this utility model.

[0029] In the attached diagram: 1-Wire spool, 11-Wire clamping device, 2-Clamping and feeding mechanism, 3-Upper wire threading mechanism, 4-Lower wire threading mechanism, 5-Wire cutting assembly, 51-Wire cutting cylinder, 52-Wire cutting knife, 53-Wire cutting moving drive mechanism, 6-Wire end detection assembly, 61-Detection drive unit, 62-Conductive detection device, 71-Wire guide tube, 72-Conduit drive mechanism, 8-Broken wire collection device, 9-Electrode wire, 91-Wire end.

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] like Figures 1 to 9As shown, an automatic wire splicing structure with a wire-cutting mechanism includes a base. On the base are a wire spool assembly, a clamping mechanism 2, an upper wire threading mechanism 3, and a lower wire threading mechanism 4 arranged sequentially. The wire spool assembly, clamping mechanism 2, upper wire threading mechanism 3, and lower wire threading mechanism 4 form a transport path for the electrode wire 9. The clamping mechanism 2 is used to clamp and transport the electrode wire 9. A processing station is provided between the upper wire threading mechanism 3 and the lower wire threading mechanism 4. The clamping mechanism 2 can transport the electrode wire 9, and in conjunction with the wire spool assembly, it maintains a certain tension on the electrode wire 9 during transport. The processing station between the upper wire threading mechanism 3 and the lower wire threading mechanism 4 can accommodate a workpiece. The electrode wire 9 passes through the upper wire threading mechanism 3 and the lower wire threading mechanism 4 to perform wire cutting on the workpiece. The structures of the clamping mechanism 2, the upper wire threading mechanism 3, and the lower wire threading mechanism 4 can refer to the structures of existing technologies and will not be described in detail here.

[0035] The wire drum assembly includes a wire drum 1, a wire feeding motor, and an angle detection device. The wire drum 1 is rotatably connected to a base. The wire drum 1 is equipped with a wire clamping member 11 for clamping or releasing the wire head 91 of the electrode wire 9. The wire feeding motor is fixedly connected to the base and is drivenly connected to the wire drum 1. The angle detection device can detect the rotation angle of the wire feeding motor. The wire feeding motor can be a servo motor, and the driver of the servo motor can control the rotation angle and can be used as the angle detection device. Alternatively, the angle detection device can be an encoder.

[0036] The automatic wire splicing structure also includes a wire cutting component 5 and a wire end detection component 6. The conveying path includes a wire end detection position and a wire cutting position. The wire end detection component 6 is located beside the wire end detection position and is used to detect whether the wire end 91 has reached the wire end detection position. The wire cutting component 5 is located beside the wire cutting position and is used to cut off the excess length of the wire end 91 of the electrode wire 9. The wire end detection component 6 is signal connected to the wire feeding motor, the angle detection device and the wire cutting component 5. The wire end detection component 6, the wire feeding motor, the angle detection device and the wire cutting component 5 work together to reduce the length of the electrode wire 9 so that the trimmed wire end 91 of the electrode wire 9 can be compensated and connected to the wire clamping component 11.

[0037] During wire feeding, the wire feeding motor drives the wire drum 1 to rotate and feed out the electrode wire 9. The angle detection device detects the angle of the wire drum 1, and the wire head detection assembly 6 detects the position of the wire head 91. Figure 1 and Figure 6 Since the distance from the wire tip detection position to the wire receiving position is fixed, the distance difference between the wire tip 91 and the wire clamping member 11 on the wire spool 1 can be determined based on the position of the wire tip 91 and the angle between the wire tip 91 and the wire clamping member 11 on the wire spool 1. Then, the wire spool 1 rotates according to this distance difference to feed out the electrode wire 9 with a corresponding compensation length L. Specifically, the wire tip 91 is first fed to the wire cutting position and then continues to extend beyond the wire cutting position by a length equal to the compensation length L. Figure 2 and Figure 7When the electrode wire 9 is too long, an electrode wire 9 of the corresponding extended length is fed out. When the electrode wire 9 is too short, the wire spool 1 rotates again to feed out an electrode wire 9 of approximately one full turn, compensating for the short length within the fed-out length. Then, the wire cutting assembly 5 cuts off the compensated length of the electrode wire 9, referring to... Figure 3 and Figure 8 After the wire is cut, the new wire end 91 is at the cutting position, and the remaining electrode wire 9 can be connected to the wire clamping member 11. Then the wire drum 1 rotates, causing the wire clamping member 11 to rotate to the wire-connecting angle, and the wire end 91 moves exactly to the position of the wire clamping member 11. The wire clamping member 11 clamps the wire end 91. (Refer to...) Figure 4 and Figure 9 This invention achieves the docking of the wire end 91 with the wire clamping component 11. Through the cooperation of the wire end detection component 6, the wire feeding motor, the angle detection device, and the wire cutting component 5, the length of the electrode wire 9 can be reduced to compensate for the shortening, allowing the trimmed wire end 91 of the electrode wire 9 to connect with the wire clamping component 11. This enables automatic wire splicing even when the electrode wire 9 is too long or too short. Furthermore, the modified wire end 91 reduces the problems of forking and blunting, making it easier to thread the wire. Moreover, by accurately detecting the position of the wire end, feeding a more precise wire length, and automatically cutting, the position of the wire end can be accurately controlled without operator intervention, improving the efficiency of wire disassembly, threading, and splicing, and simplifying operation.

[0038] In some specific embodiments, reference is made to Figures 1 to 4 Both the yarn end detection component 6 and the yarn cutting component 5 are located on the side of the yarn spool assembly near the lower yarn threading mechanism 4. In other embodiments, refer to... Figures 6 to 9 The wire head detection component 6 is located on the lower side of the upper wire threading mechanism 3, and the wire cutting component 5 is located on the lower side of the upper wire threading mechanism 3 and / or on the side of the wire spool assembly near the lower wire threading mechanism 4.

[0039] The wire end detection component 6 can be located on the side of the wire spool 1 near the lower wire threading mechanism 4, or on the lower side of the upper wire threading mechanism 3. When the wire end 91 moves to the position of the wire end detection component 6, the wire end 91 can be detected. The wire cutting component 5 is located on the side of the wire end detection component 6 near the wire spool assembly, so that the wire end 91 does not need to retract when cutting the wire.

[0040] In some specific embodiments, reference is made to Figures 6 to 9 The thread detection component 6 is an infrared sensor, a photoelectric sensor, or a vision detector. The thread detection component 6 can detect the thread 91 through a non-contact detection method using an infrared sensor, a photoelectric sensor, or a vision detector.

[0041] In some specific embodiments, reference is made to Figures 1 to 4The wire end detection assembly 6 includes a detection drive unit 61 and a conductive detection element 62. The detection drive unit 61 is mounted on a base, and the conductive detection element 62 is driveably connected to the detection drive unit 61. The detection drive unit 61 can drive the conductive detection element 62 into or away from the conveying path. When the conductive detection element 62 enters the conveying path, it can contact the wire end 91 to detect the wire end 91. The wire end detection assembly 6 can detect the wire end 91 through the contact between the conductive detection element 62 and the wire end 91. The detection drive unit 61 drives the conductive detection element 62 into the conveying path. After the wire end 91 touches the conductive detection element 62, the conductive detection element 62 conducts electricity, thus detecting the wire end 91. After detection, the detection drive unit 61 drives the conductive detection element 62 away from the conveying path, and the electrode wire 9 can move. The detection drive unit 61 can be a cylinder.

[0042] In some specific embodiments, reference is made to Figure 5 The wire-cutting assembly 5 includes a wire-cutting cylinder 51 and two wire-cutting blades 52. The wire-cutting blades 52 are connected to the wire-cutting cylinder 51 in a driving connection. The wire-cutting cylinder 51 can drive the two wire-cutting blades 52 to move closer to each other to cut the wire or to move further apart. The electrode wire 9 passes between the two wire-cutting blades 52. When the wire-cutting cylinder 51 drives the two wire-cutting blades 52 to move closer to each other, it can cut the electrode wire 9.

[0043] The wire-cutting cylinder 51 and the two wire-cutting blades 52 can be fixed at the wire-cutting position, see reference. Figure 6 The electrode wire 9 passes between the two wire cutters 52. In other embodiments, refer to... Figure 1 The wire-cutting assembly 5 also includes a wire-cutting moving drive mechanism 53. A wire-cutting cylinder 51 and wire-cutting blades 52 are mounted on the moving end of the wire-cutting moving drive mechanism 53. The wire-cutting moving drive mechanism 53 can drive the wire-cutting blades 52 into or away from the conveying path. The wire-cutting cylinder 51 and the two wire-cutting blades 52 can enter the conveying path to cut the electrode wire 9 under the drive of the wire-cutting moving drive mechanism 53, and can avoid obstacles after being moved away.

[0044] In some specific embodiments, the wire-cutting automatic wire splicing structure further includes a horizontally arranged wire guide tube 71, which is located between the wire spool 1 and the lower wire threading mechanism 4, and is positioned to match the wire clamping member 11. The wire guide tube 71 can guide and restrict the position of the electrode wire 9, so that the electrode wire 9 and the wire end 91 are conveyed to the wire spool assembly.

[0045] In some specific embodiments, reference is made to Figures 1 to 4 The wire clamp 11 is a spring-loaded structure. The wire-cutting automatic wire splicing structure also includes a catheter drive mechanism 72. The catheter drive mechanism 72 is connected to the guide wire tube 71. The catheter drive mechanism 72 can drive the guide wire tube 71 to approach the wire clamp 11 to open the wire clamp 11 or move away from the wire clamp 11 to close the wire clamp 11.

[0046] The wire clamp 11 can adopt a spring-loaded structure. When the wire clamp 11 is at the origin angle position, the catheter drive mechanism 72 drives the guide wire tube 71 to approach the wire clamp 11 and open the wire clamp 11, allowing the wire end 91 to enter the wire clamp 11. Then, the catheter drive mechanism 72 drives the guide wire tube 71 away from the wire clamp 11, and the wire clamp 11 resets under elastic action to clamp the wire end 91. The catheter drive mechanism 72 can be a cylinder or the like. The spring-loaded wire clamp 11 can refer to existing technology. In this wire splicing method, the wire spool 1 can first rotate to the splicing angle and feed out the electrode wire 9, while the clamping mechanism 2 does not feed the electrode wire 9 initially, leaving the electrode wire 9 in a relaxed state. When the wire clamp 11 opens, the clamping mechanism 2 then feeds out the tensioned electrode wire 9, allowing the wire end 91 to enter the wire clamp 11 to complete the wire splicing.

[0047] In some specific embodiments, reference is made to Figures 6 to 9 The wire clamp 11 is movably connected to the wire drum 1. A return spring is connected between the wire clamp 11 and the wire drum 1. A pressing drive mechanism is also provided on the base. The pressing drive mechanism is matched with the position of the wire clamp 11. The pressing drive mechanism can press the wire clamp 11 to open the wire clamp 11. The return spring can reset the wire clamp 11 to close.

[0048] The base is equipped with a pressing drive mechanism (not shown in the attached figure). When the wire clamp 11 is at the origin angle position, the pressing drive mechanism can press the wire clamp 11 to open it, allowing the wire tip 91 to enter the wire clamp 11, while the guide tube 71 remains stationary. Then, the pressing drive mechanism releases the wire clamp 11, and the wire clamp 11 returns to its original position under the action of the return spring, clamping the wire tip 91. The guide tube drive mechanism 72 can be a cylinder or the like. The pressing-type wire clamp 11 can refer to existing technology.

[0049] Furthermore, the end of the guide tube 71 is positioned close to the wire clamp 11, which can reduce the deformation of the wire end 91 after it protrudes from the guide tube 71 and improve the success rate of docking.

[0050] In some specific embodiments, the wire-cutting automatic wire splicing structure also includes a broken wire collection device 8, which is located beside the wire-cutting assembly 5 and is used to collect the cut electrode wires 9. After the wire-cutting assembly 5 cuts the electrode wires 9, the broken electrode wires 9 are collected by the broken wire collection device 8 to prevent the broken wires from flying around and affecting subsequent wire splicing and operation. The broken wire collection device 8 can adopt a negative pressure suction collection method, where the broken wires are sucked away and collected by negative pressure after cutting, or a clamping mechanism can be set to clamp the broken wires and remove them.

[0051] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A wire-cutting automatic wire splicing structure, comprising a base, wherein a wire spool assembly, a clamping mechanism (2), an upper wire threading mechanism (3), and a lower wire threading mechanism (4) are arranged sequentially on the base, wherein the wire spool assembly, the clamping mechanism (2), the upper wire threading mechanism (3), and the lower wire threading mechanism (4) form a conveying path for an electrode wire (9), the clamping mechanism (2) is used to clamp and convey the electrode wire (9), and a processing station is provided between the upper wire threading mechanism (3) and the lower wire threading mechanism (4), characterized in that: The wire spool assembly includes a wire spool (1), a wire feeding motor, and an angle detection device. The wire spool (1) is rotatably connected to the base. The wire spool (1) is provided with a wire clamp (11) for clamping or releasing the wire end (91) of the electrode wire (9). The wire feeding motor is fixedly connected to the base and is drivenly connected to the wire spool (1). The angle detection device can detect the rotation angle of the wire feeding motor. The automatic wire splicing structure also includes a wire cutting component (5) and a wire end detection component (6). The conveying path includes a wire end detection position and a wire cutting position. The wire end detection component (6) is located beside the wire end detection position. The wire end detection component (6) is used to detect whether the wire end (91) has reached the wire end detection position. The wire cutting component (5) is located beside the wire cutting position. The wire cutting component (5) is used to cut off the excess length of the wire end (91) of the electrode wire (9). The wire end detection component (6) is signal connected to the wire feeding motor, the angle detection device and the wire cutting component (5). The wire end detection component (6), the wire feeding motor, the angle detection device and the wire cutting component (5) work together to reduce the length of the electrode wire (9) so that the wire end (91) of the trimmed electrode wire (9) is compensated and connected to the wire clamping component (11).

2. The automatic yarn picking structure of claim 1, wherein The wire head detection component (6) and the wire cutting component (5) are both located on the side of the wire spool assembly near the lower wire threading mechanism (4); Alternatively, the yarn end detection component (6) may be located on the lower side of the upper yarn threading mechanism (3), and the yarn cutting component (5) may be located on the lower side of the upper yarn threading mechanism (3) and / or on the side of the yarn spool assembly near the lower yarn threading mechanism (4).

3. The automatic wire splicing structure of claim 1, wherein The wire end detection component (6) is an infrared sensor, a photoelectric sensor, or a visual detector.

4. The automatic wire splicing structure of claim 1, wherein The wire end detection assembly (6) includes a detection drive unit (61) and a conductive detection element (62). The detection drive unit (61) is disposed on the base. The conductive detection element (62) is connected to the detection drive unit (61) in a transmission manner. The detection drive unit (61) can drive the conductive detection element (62) to enter or move away from the conveying path. When the conductive detection element (62) enters the conveying path, it can contact the wire end (91) to detect the wire end (91).

5. The automatic wire splicing structure of claim 1, wherein The wire cutting assembly (5) includes a wire cutting cylinder (51) and two wire cutting blades (52). The wire cutting blades (52) are connected to the wire cutting cylinder (51) in a transmission manner. The wire cutting cylinder (51) can drive the two wire cutting blades (52) to move closer to each other or further away from each other to cut wires.

6. The automatic wire splicing structure of claim 5, wherein The wire cutting assembly (5) further includes a wire cutting moving drive mechanism (53). The wire cutting cylinder (51) and the wire cutting blade (52) are located on the moving end of the wire cutting moving drive mechanism (53). The wire cutting moving drive mechanism (53) can drive the wire cutting blade (52) to enter or move away from the conveying path.

7. The automatic wire splicing structure of claim 1, wherein The automatic wire splicing structure also includes a horizontally arranged wire guide tube (71), which is located between the wire spool (1) and the lower wire threading mechanism (4). The wire guide tube (71) is positioned to match the wire clamping member (11).

8. The automatic wire splicing structure of claim 7, wherein The wire clamp (11) is a spring-loaded structure. The wire-cutting automatic wire splicing structure also includes a catheter driving mechanism (72). The catheter driving mechanism (72) is connected to the guide wire tube (71) in a transmission manner. The catheter driving mechanism (72) can drive the guide wire tube (71) to move closer to the wire clamp (11) to open the wire clamp (11) or move away from the wire clamp (11) to close the wire clamp (11).

9. The automatic wire splicing structure of claim 7, wherein The wire clamp (11) is movably connected to the wire spool (1), and a return spring is connected between the wire clamp (11) and the wire spool (1). The base is also provided with a pressing drive mechanism, which is matched with the position of the wire clamp (11). The pressing drive mechanism can press the wire clamp (11) to open the wire clamp (11), and the return spring can reset the wire clamp (11) to close.

10. The automatic wire splicing structure of the wire-cutting type as described in claim 1, characterized in that, The wire-cutting automatic wire splicing structure also includes a broken wire collection device (8), which is located on the side of the wire-cutting assembly (5) and is used to collect the cut electrode wires (9).

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