Clutch type automatic wire connecting structure

Abstract

The utility model discloses a clutch 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 winding body and a wire receiving body which are arranged in a split mode, the wire cylinder assembly further comprises a wire feeding motor, an angle detection device and a clutch device, and the wire winding body and the wire receiving body can be connected to be fixed relatively or separated to rotate relatively under the matching action of the clutch device. The clutch type automatic wire connecting structure further comprises a wire head detection assembly which is used for detecting whether the wire head reaches the wire head detection position or not. The wire head detection assembly, the wire feeding motor, the angle detection device and the clutch device are matched to change the relative angle of the wire winding body and the wire connecting body for compensation, so that the wire head of the electrode wire is butted to the wire clamping piece, and automatic wire connecting can be realized 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 clutch-type 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.

[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 clutch-type automatic wire splicing structure, which aims to provide another structure that can automatically splice the electrode wire when it is too long or too short.

[0005] To achieve the above objectives, this utility model proposes a clutch-type 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 feeding path. The clamping mechanism is used to clamp and feed the electrode wire. A processing station is provided between the upper wire threading mechanism and the lower wire threading mechanism.

[0006] The wire spool assembly includes a separately arranged winding body and a wire receiving body, which are arranged coaxially along the axial direction of the wire spool assembly. The winding body and the wire receiving body are rotatably connected to the base. The winding body is used to wind the electrode wire, and the wire receiving body is provided with a wire clamp for clamping or releasing the wire end of the electrode wire. The wire spool assembly also includes a wire feeding motor and an angle detection device. The wire feeding motor is fixedly connected to the base and is drivenly connected to the winding body. The angle detection device can detect the rotation angle of the wire feeding motor. The wire spool assembly also includes a clutch device connected between the winding body and the wire receiving body. The winding body and the wire receiving body can be engaged for relative fixation or separated for relative rotation under the action of the clutch device.

[0007] The clutch-type automatic wire splicing structure also includes a wire end detection component. The conveying path includes a wire end detection position. The wire end detection component is located beside the wire end detection position. The wire end detection component is used to detect whether the wire end has reached the wire end detection position. The wire end detection component is signal-connected to the wire feeding motor, the angle detection device, and the clutch device. The wire end detection component, the wire feeding motor, the angle detection device, and the clutch device work together to change the relative angle between the winding body and the wire splicing body so that the wire end of the electrode wire is compensated and connected to the wire clamping member.

[0008] The wire spool assembly includes a separately configured winding body and a receiving body, which can be engaged or disengaged with the help of a clutch device. During wire cutting, when the winding body and the receiving body are engaged, the wire feeding motor drives the winding body and the receiving body to rotate synchronously. When wire splicing is required, the winding body rotates to feed the wire. An angle detection device detects the angle between the winding body and the receiving body, and a wire end detection component detects the position of the wire end. Since the distance from the wire end detection position to the wire splicing position is fixed, the distance difference between the wire end and the clamping component can be determined based on the position of the wire end and the angle of the receiving body. Then, the receiving body is positioned at the origin angle of wire splicing and remains stationary. The winding body and the receiving body are in a separated state. The winding body rotates to feed the electrode wire, bringing the wire end closer to the clamping component. The wire feeding motor drives the winding body to rotate by a corresponding compensation angle based on the distance difference between the wire end and the clamping component. This compensation angle can be converted into the length by which the electrode wire should be shortened or lengthened, so that the wire end moves exactly to the position of the clamping component. The clamping component clamps the wire end, achieving the connection between the wire end and the clamping component. This invention, through the cooperation of a wire end detection component, a wire feeding motor, an angle detection device, and a clutch device, can compensate by changing the relative angle between the winding body and the wire receiving body, so that the wire end of the electrode wire is connected to the wire clamping component, thereby enabling automatic wire splicing even when the electrode wire is too long or too short.

[0009] Preferably, the yarn end detection component is located on the side of the yarn bobbin assembly near the lower yarn threading mechanism; or, the yarn end detection component is located on the lower side of the upper yarn threading mechanism. The position of the yarn end detection component can be on the side of the yarn bobbin assembly near the lower yarn threading mechanism, or on the lower side of the upper yarn threading mechanism, and the yarn end can be detected when it 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 clutch device includes a clutch drive unit, a first friction plate, a second friction plate, and a pressure spring. The clutch drive unit is fixed on the base. A rotating shaft is fixed on the winding body, and the winding body is rotatably connected to the base through the rotating shaft. The wire receiving body is sleeved on the rotating shaft, and the wire receiving body is rotatably connected to the rotating shaft and axially fixed. The first friction plate is sleeved on the rotating shaft and fixedly connected to the rotating shaft. The second friction plate is sleeved on the rotating shaft and rotatably connected to the rotating shaft. The first friction plate, the second friction plate, the wire receiving body, and the winding body are arranged in sequence. The second friction plate is slidably connected to the wire receiving body and circumferentially fixed. The pressure spring is disposed between the second friction plate and the wire receiving body. The clutch drive unit is matched with the second friction plate. During processing, the second friction plate adheres to the first friction plate under the action of the pressure spring. During wire connection, the clutch drive unit can drive the second friction plate away from the first friction plate.

[0013] Preferably, the clutch device includes an electromagnetic coil, an armature, a fixed friction plate, a rotating seat, and a disc spring. The electromagnetic coil is fixed to the base, and a rotating shaft is fixed on the winding body. The winding body is rotatably connected to the base through the rotating shaft. The fixed friction plate is sleeved on the rotating shaft and fixedly connected to the rotating shaft. The rotating seat is sleeved on the rotating shaft and rotatably connected to the rotating shaft and axially fixed. The electromagnetic coil, the armature, the fixed friction plate, and the winding body are arranged in sequence. The rotating seat is located inside the armature and inside the mating position of the armature and the fixed friction plate. The two ends of the disc spring are fixed to the rotating seat and the armature, respectively. The armature can slide axially along the rotating shaft. The connecting body is circumferentially fixed to the armature. During processing, the armature adheres to the fixed friction plate under the action of the disc spring. During connecting, the electromagnetic coil can be energized to attract the armature away from the fixed friction plate.

[0014] Preferably, the clutch-type automatic wire splicing structure further includes a transversely arranged wire guide tube, which is located between the wire spool assembly and the wire feeding mechanism, and is positionally matched with 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 clutch-type automatic wire splicing structure further includes a catheter driving mechanism. The catheter driving mechanism is connected to the guide wire tube in a transmission manner. 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 receiving body, a return spring is connected between the wire clamp and the wire receiving body, 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 the wire clamp, and the return spring can reset the wire clamp to close.

[0017] Preferably, the end of the guide tube is positioned close to the wire clamp to reduce the deformation of the wire end after it protrudes from the guide tube.

[0018] Preferably, the wire connector is provided with a wire connector rope, one end of which is fixedly connected to the wire connector body, and the other end of which is connected to the wire clamping member. The base is also provided with a wire clamping drive mechanism, which is positioned to match the wire clamping member. The wire clamping member is normally kept closed but can be opened when pressed by the wire clamping drive mechanism. 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 clutch-type automatic wire splicing structure of this utility model when the wire end moves to the position of the wire end detection component;

[0021] Figure 2 This is a schematic diagram of the structure of the wire winding body and the wire connecting body of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure when the first friction plate and the second friction plate are in contact, according to one embodiment of the clutch device of this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the clutch device of the present invention when the first friction plate and the second friction plate are separated;

[0024] Figure 5 This is a schematic diagram of the structure when the armature and the fixed friction plate are in contact, according to another embodiment of the clutch device of this utility model.

[0025] Figure 6 This is a schematic diagram of the structure when the armature and the fixed friction plate are separated in another embodiment of the clutch device of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure when the wire end is connected to the wire clamping component in one embodiment of the clutch-type automatic wire splicing structure of this utility model;

[0027] Figure 8 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 clutch-type automatic wire splicing structure of this utility model;

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

[0029] Figure 10 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 clutch-type automatic wire splicing structure of this utility model.

[0030] Figure 11 This is a schematic diagram of the structure when the wire end is connected to the wire clamping component in another embodiment of the clutch-type automatic wire splicing structure of this utility model;

[0031] Figure 12 This is a schematic diagram of the structure of the clutch-type automatic wire splicing structure of this utility model when the wire splicing rope drags the electrode wire.

[0032] In the attached diagram: 1-base, 2-wire spool assembly, 21-wire winding body, 211-rotating shaft, 22-wire receiving body, 221-wire clamping component, 222-wire receiving rope, 223-wire clamping drive mechanism, 3-clamping mechanism, 4-upper wire threading mechanism, 5-lower wire threading mechanism, 6-electrode wire, 61-wire end, 71-clutch drive unit, 72-first friction plate, 73-second friction plate, 731-guide rod, 74-pressure spring, 75-electromagnetic coil, 76-armature, 77-fixed friction plate, 78-rotating seat, 79-butterfly spring, 8-wire end detection assembly, 81-detection drive unit, 82-conductive detection component, 91-wire guide tube, 92-conductor drive mechanism.

[0033] 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

[0034] 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.

[0035] 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.

[0036] 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.

[0037] like Figures 1 to 12As shown, a clutch-type automatic wire feeding structure includes a base 1. The base 1 has a wire spool assembly 2, a clamping mechanism 3, an upper wire threading mechanism 4, and a lower wire threading mechanism 5 arranged sequentially. The wire spool assembly 2, clamping mechanism 3, upper wire threading mechanism 4, and lower wire threading mechanism 5 form a transport path for the electrode wire 6. The clamping mechanism 3 is used to clamp and transport the electrode wire 6. A processing station is provided between the upper wire threading mechanism 4 and the lower wire threading mechanism 5. The clamping mechanism 3 can transport the electrode wire 6, and in conjunction with the wire spool assembly 2, it maintains a certain tension on the electrode wire 6 during transport. The processing station between the upper wire threading mechanism 4 and the lower wire threading mechanism 5 can be used to place a workpiece. The electrode wire 6 passes through the upper wire threading mechanism 4 and the lower wire threading mechanism 5 to perform wire cutting on the workpiece. The structures of the clamping mechanism 3, the upper wire threading mechanism 4, and the lower wire threading mechanism 5 can refer to the structures of existing technologies, and will not be described in detail here.

[0038] The wire spool assembly 2 includes a separately configured winding body 21 and a wire receiving body 22, as shown in the figure. Figure 2 The winding body 21 and the receiving body 22 are arranged and coaxially along the axial direction of the wire drum assembly 2. The winding body 21 and the receiving body 22 are rotatably connected to the base 1. The winding body 21 is used to wind the electrode wire 6. The receiving body 22 is provided with a clamping member 221 for clamping or releasing the wire end 61 of the electrode wire 6. The wire drum assembly 2 also includes a wire feeding motor and an angle detection device. The wire feeding motor is fixedly connected to the base 1 and is drivenly connected to the winding body 21. The angle detection device can detect the rotation angle of the wire feeding motor. The wire drum assembly 2 also includes a clutch device connected between the winding body 21 and the receiving body 22. The winding body 21 and the receiving body 22 can be engaged for relative fixation or separated for relative rotation under the action of the clutch device. The wire feeding motor can be a servo motor. The driver of the servo motor can control the rotation angle and can be used as an angle detection device, or the angle detection device can be an encoder.

[0039] The clutch-type automatic wire splicing structure also includes a wire end detection component. The conveying path includes a wire end detection position. The wire end detection component is located beside the wire end detection position. The wire end detection component is used to detect whether the wire end 61 has reached the wire end detection position. The wire end detection component is connected to the wire feeding motor, the angle detection device and the clutch device. The wire end detection component, the wire feeding motor, the angle detection device and the clutch device work together to change the relative angle between the winding body 21 and the wire splicing body 22 so that the wire end 61 of the electrode wire 6 is compensated and connected to the wire clamping member 221.

[0040] The wire spool assembly 2 includes a separately configured wire winding body 21 and a wire receiving body 22. The wire winding body 21 and the wire receiving body 22 can be engaged or disengaged under the action of a clutch device. When the wire winding body 21 and the wire receiving body 22 are engaged during wire cutting, the wire feeding motor drives the wire winding body 21 and the wire receiving body 22 to rotate synchronously. During the wire unwinding, wire threading and wire splicing process, the wire winding body 21 and the wire receiving body 22 can be controlled to separate as needed. The wire receiving body 22 stops and is not affected by the rotation of the wire winding body 21.

[0041] When wire splicing is required, the wire feeding mechanism rotates around the wire body 21. The angle detection device detects the angle between the wire body 21 and the wire splicing body 22, and the wire end detection assembly detects the position of the wire end 61. Since the distance from the wire end detection position to the wire splicing position is fixed, the distance difference between the wire end 61 and the wire splicing body 221 can be determined based on the position of the wire end 61 and the angle between the wire splicing body 22. Then, the wire splicing body 22 is positioned at the origin angle of the wire splicing and remains stationary. The wire body 21 and the wire splicing body 22 are in a separated state. The wire feeding mechanism rotates around the wire body 21 to feed the electrode wire 6, bringing the wire end 61 closer to the wire splicing body 221. The motor drives the winding body 21 to rotate by a corresponding compensation angle based on the distance difference between the wire end 61 and the wire clamp 221. This compensation angle can be converted into the length that the electrode wire 6 should shorten or lengthen. When the electrode wire 6 is too long, the rotation angle of the winding body 21 relative to the origin angle position is reduced, that is, the output electrode wire 6 is reduced. When the electrode wire 6 is too short, the rotation angle of the winding body 21 relative to the origin angle position is increased, that is, the output electrode wire 6 is increased, so that the wire end 61 moves exactly to the position of the wire clamp 221. The wire clamp 221 clamps the wire end 61, realizing the docking of the wire end 61 and the wire clamp 221.

[0042] This invention, through the cooperation of the wire end detection component, the wire feeding motor, the angle detection device and the clutch device, can change the relative angle between the winding body 21 and the wire receiving body 22 for compensation, so that the wire end 61 of the electrode wire 6 is connected to the wire clamping member 221, thereby realizing automatic wire connection when the electrode wire 6 is too long or too short.

[0043] Specifically, the winding body 21 and the receiving body 22 can remain in place initially. After the position of the wire end is detected, the winding body 21 and the receiving body 22 can be rotated synchronously to the origin angle position, and then the winding body 21 and the receiving body 22 can be separated to connect the wire. Alternatively, when unwinding the wire, the receiving body 22 can be rotated to the origin angle position first, and the winding body 21 and the receiving body 22 can be separated. Then, the receiving body 22 can remain stationary during the subsequent wire threading and connection process. Alternatively, during the wire unwinding, threading, and connection process, the winding body 21 and the receiving body 22 can be controlled to separate or engage according to other actual action requirements. The purpose is simply to make the winding body 21 and the receiving body 22 rotate relative to each other so that the wire end is just right to align with the wire clamping piece.

[0044] In some specific embodiments, reference is made to Figure 1The yarn end detection component is located on the side of the yarn spool assembly 2 near the lower yarn threading mechanism 5. In other embodiments, refer to... Figure 8 The yarn end detection component is located on the lower side of the upper yarn threading mechanism 4. The yarn end detection component can be located on the side of the yarn spool assembly 2 near the lower yarn threading mechanism 5, or on the lower side of the upper yarn threading mechanism 4. When the yarn end 61 moves to the position of the yarn end detection component, the yarn end 61 can be detected.

[0045] In some specific embodiments, reference is made to Figure 1 The thread detection component can be an infrared sensor, a photoelectric sensor, or a vision detector. The thread detection component can use non-contact detection devices such as infrared sensors, photoelectric sensors, or vision detectors. When the thread 61 moves to the position of the thread detection component, the thread 61 can be detected.

[0046] In some specific embodiments, reference is made to Figure 8 The wire end detection assembly includes a detection drive unit 81 and a conductive detection element 82. The detection drive unit 81 is mounted on the base 1, and the conductive detection element 82 is driveably connected to the detection drive unit 81. The detection drive unit 81 can drive the conductive detection element 82 into or away from the conveying path. When the conductive detection element 82 enters the conveying path, it can contact the wire end 61 to detect the wire end 61. The wire end detection assembly can detect the wire end 61 through the contact between the conductive detection element 82 and the wire end 61. The detection drive unit 81 drives the conductive detection element 82 into the conveying path. After the wire end 61 touches the conductive detection element 82, the conductive detection element 82 conducts electricity, thus detecting the wire end 61. After detection, the detection drive unit 81 drives the conductive detection element 82 away from the conveying path, and the electrode wire 6 can move. The detection drive unit 81 can be a cylinder.

[0047] In some specific embodiments, reference is made to Figure 3 and Figure 4 The clutch device includes a clutch drive unit 71, a first friction plate 72, a second friction plate 73, and a pressure spring 74. The clutch drive unit 71 is fixed on the base 1. A rotating shaft 211 is fixed on the winding body 21. The wire feeding motor is connected to the rotating shaft 211. The winding body 21 is rotatably connected to the base 1 through the rotating shaft 211. The wire receiving body 22 is sleeved on the rotating shaft 211. The wire receiving body 22 is rotatably connected to the rotating shaft 211 and axially fixed. The first friction plate 72 is sleeved on the rotating shaft 211 and fixedly connected to the rotating shaft 211. The second friction plate 73 is sleeved on the rotating shaft 211 and rotatably connected to the rotating shaft 211. The first friction plate 72, the second friction plate 73, the wire receiving body 22, and the winding body 21 are arranged in sequence. The second friction plate 73 is slidably connected to the wire receiving body 22 and circumferentially fixed. The pressure spring 74 is located between the second friction plate 73 and the wire receiving body 22. The clutch drive unit 71 is matched with the second friction plate 73. During online cutting, refer to Figure 3The second friction plate 73, under the action of the pressure spring 74, adheres to the first friction plate 72 and rotates synchronously around the wire body 21 and the wire receiving body 22. The clutch drive unit 71 does not contact the second friction plate 73. During wire connection, refer to... Figure 4 The clutch drive unit 71 can drive the second friction plate 73 away from the first friction plate 72. Specifically, the clutch drive unit 71 pushes the second friction plate 73 away, the second friction plate 73 and the wire connecting body 22 stop rotating, the pressure spring 74 is compressed, and the first friction plate 72 and the wire connecting body 21 can continue to rotate. The clutch drive unit 71 can be a cylinder.

[0048] Furthermore, the clutch device also includes a guide rod 731, one end of which is fixedly connected to the second friction plate 73, and the other end of which is slidably connected to the connecting wire body 22. A pressure spring 74 is disposed between the second friction plate 73 and the connecting wire body 22 and is sleeved on the guide rod 731, so as to realize the sliding connection and circumferential fixation between the second friction plate 73 and the connecting wire body 22.

[0049] In some specific embodiments, the clutch device includes an electromagnetic coil 75, an armature 76, a fixed friction plate 77, a rotating seat 78, and a disc spring 79. The electromagnetic coil 75 is fixed to the base 1, and a rotating shaft 211 is fixedly mounted on the winding body 21. The winding body 21 is rotatably connected to the base 1 through the rotating shaft 211. The fixed friction plate 77 is sleeved on the rotating shaft 211 and fixedly connected to the rotating shaft 211. The rotating seat 78 is sleeved on the rotating shaft 211, and the rotating seat 78 is rotatably connected to the rotating shaft 211 and axially fixed. The electromagnetic coil 75, armature 76, fixed friction plate 77 and winding body 21 are arranged in sequence. The rotating seat 78 is located inside the armature 76 and inside the mating position of the armature 76 and the fixed friction plate 77. The two ends of the butterfly spring 79, namely the inner and outer rings of the butterfly spring 79, are fixed to the rotating seat 78 and the armature 76 respectively. The armature 76 can slide along the axis of the rotating shaft 211. The connecting body 22 is circumferentially fixed to the armature 76. The circumferential fixation of the connecting body 22 and the armature 76 can be either fixed or axially sliding.

[0050] During online cutting, refer to Figure 5 When the coil is not energized, the armature 76, under the action of the disc spring 79, adheres to the fixed friction plate 77 and rotates synchronously around the wire body 21 and the wire receiving body 22, without contacting the coil. During wire connection, refer to... Figure 6 When the electromagnetic coil 75 is energized, it attracts the armature 76 away from the fixed friction plate 77. The armature 76 and the connecting wire 22 stop rotating, the disc spring 79 is stretched, and the fixed friction plate 77 and the connecting wire 21 can continue to rotate. The operating principle of the electromagnetic coil 75, armature 76 and fixed friction plate 77 can be referred to as that of an electromagnetic clutch.

[0051] In some specific embodiments, the clutch-type automatic wire splicing structure further includes a laterally arranged wire guide tube 91, which is located between the wire spool assembly 2 and the lower wire feeding mechanism 5, and is positioned to match the wire clamping member 221. The wire guide tube 91 can guide and restrict the position of the electrode wire 6, so that the electrode wire 6 and the wire end 61 are conveyed to the wire spool assembly 2.

[0052] In some specific embodiments, reference is made to Figure 1 and Figure 7 The wire clamp 221 is a spring-loaded structure. The clutch-type automatic wire splicing structure also includes a catheter drive mechanism 92. The catheter drive mechanism 92 is connected to the guide wire tube 91. The catheter drive mechanism 92 can drive the guide wire tube 91 to approach the wire clamp 221 to open the wire clamp 221 or move away from the wire clamp 221 to close the wire clamp 221.

[0053] The wire clamp 221 can adopt a spring-loaded structure. When the wire clamp 221 is at the origin angle position, the catheter drive mechanism 92 drives the guide wire tube 91 to approach the wire clamp 221 and open the wire clamp 221, allowing the wire end 61 to enter the wire clamp 221. Then, the catheter drive mechanism 92 drives the guide wire tube 91 away from the wire clamp 221, and the wire clamp 221 returns to its original position under elastic action, clamping the wire end 61. The catheter drive mechanism 92 can be a cylinder or the like. The spring-loaded wire clamp 221 can refer to existing technology.

[0054] In some specific embodiments, reference is made to Figure 8 and Figure 9 The wire clamp 221 is movably connected to the wire receiving body 22. A return spring is connected between the wire clamp 221 and the wire receiving body 22. The base 1 is also provided with a pressing drive mechanism (not shown in the figure). The pressing drive mechanism is matched with the position of the wire clamp 221. The pressing drive mechanism can press the wire clamp 221 to open the wire clamp 221, and the return spring can reset the wire clamp 221 to close.

[0055] The base 1 is equipped with a pressing drive mechanism. When the wire clamp 221 is at the origin angle position, the pressing drive mechanism can press the wire clamp 221 to open it, allowing the wire end 61 to enter the wire clamp 221, while the guide tube 91 remains stationary. Then, the pressing drive mechanism releases the wire clamp 221, and the wire clamp 221 resets and clamps the wire end 61 under the action of the return spring. The guide tube drive mechanism 92 can be a cylinder or the like. The pressing-type wire clamp 221 can refer to existing technology.

[0056] Furthermore, the end of the guide tube 91 is positioned close to the wire clamp 221, which can reduce the deformation of the wire end 61 after it protrudes from the guide tube 91 and improve the success rate of docking.

[0057] In some specific embodiments, reference is made to Figures 10 to 12The wire receiving body 22 is provided with a wire receiving rope 222. One end of the wire receiving rope 222 is fixedly connected to the wire receiving body 22, and the other end of the wire receiving rope 222 is connected to a wire clamping member 221. The base 1 is also provided with a wire clamping drive mechanism 223. The wire clamping drive mechanism 223 and the wire clamping member 221 are matched in position. The wire clamping member 221 is normally kept closed and can be opened when pressed by the wire clamping drive mechanism 223.

[0058] A wire-connecting rope is installed on the wire-connecting body, and the end of the wire-connecting rope is connected to a wire clamp. The wire clamp can hold the wire end, and the wire-connecting rope and the wire clamp rotate with the wire-connecting body. When disconnecting the wire, the wire clamp moves to the position of the wire clamping drive mechanism. The wire clamping drive mechanism presses the wire clamp to open the wire clamp, the wire end is released, and the clutch device separates the wire-connecting body and the wire-winding body. The wire-connecting body, the wire-connecting rope, and the wire clamp remain stationary. When connecting the wire, the wire end is aligned with the position of the wire clamp. The wire clamping drive mechanism releases the wire clamp, the wire clamp clamps the wire end to complete the connection, and then the clutch device engages the wire-connecting body and the wire-winding body. When the wire-connecting body and the wire-winding body rotate, the wire-connecting rope can drag the electrode wire.

[0059] 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 clutch-type automatic wire splicing structure, comprising a base (1), wherein a wire spool assembly (2), a clamping mechanism (3), an upper wire threading mechanism (4), and a lower wire threading mechanism (5) are arranged sequentially on the base (1), wherein the wire spool assembly (2), the clamping mechanism (3), the upper wire threading mechanism (4), and the lower wire threading mechanism (5) form a conveying path for an electrode wire (6), wherein the clamping mechanism (3) is used to clamp and convey the electrode wire (6), and a processing station is provided between the upper wire threading mechanism (4) and the lower wire threading mechanism (5), characterized in that: The wire spool assembly (2) includes a separately configured winding body (21) and a wire receiving body (22). The winding body (21) and the wire receiving body (22) are arranged and coaxially along the axial direction of the wire spool assembly (2). The winding body (21) and the wire receiving body (22) are rotatably connected to the base (1). The winding body (21) is used to wind the electrode wire (6). The wire receiving body (22) is provided with a wire clamping member (221) for clamping or releasing the wire end (61) of the electrode wire (6). It also includes a wire feeding motor and an angle detection device. The wire feeding motor is fixedly connected to the base (1) and is drivenly connected to the winding body (21). The angle detection device can detect the rotation angle of the wire feeding motor. The wire spool assembly (2) also includes a clutch device. The clutch device is connected between the winding body (21) and the receiving body (22). The winding body (21) and the receiving body (22) can be engaged to be relatively fixed or separated to be relatively rotated under the cooperation of the clutch device. The clutch-type automatic wire splicing structure also includes a wire end detection component. The conveying path includes a wire end (61) detection position. The wire end detection component is located beside the wire end (61) detection position. The wire end detection component is used to detect whether the wire end (61) has reached the wire end (61) detection position. The wire end detection component is signal connected to the wire feeding motor, the angle detection device and the clutch device. The wire end detection component, the wire feeding motor, the angle detection device and the clutch device can cooperate to change the relative angle between the winding body (21) and the wire splicing body (22) so that the wire end (61) of the electrode wire (6) is compensated and connected to the wire clamping member (221).

2. The clutch-type automatic taping structure of claim 1, wherein The yarn head detection component is located on the side of the yarn spool assembly (2) near the lower yarn threading mechanism (5); Alternatively, the yarn end detection component may be located on the lower side of the upper yarn threading mechanism (4).

3. The clutch-type automatic taping structure of claim 1, wherein, The wire end detection component is an infrared sensor, a photoelectric sensor, or a visual detector.

4. The clutch-type automatic taping structure of claim 1, wherein The wire end detection assembly includes a detection drive unit (81) and a conductive detection element (82). The detection drive unit (81) is disposed on the base (1). The conductive detection element (82) is connected to the detection drive unit (81) in a transmission manner. The detection drive unit (81) can drive the conductive detection element (82) to enter or move away from the conveying path. When the conductive detection element (82) enters the conveying path, it can contact the wire end (61) to detect the wire end (61).

5. The clutch-type automatic taping structure of claim 1, wherein, The clutch device includes a clutch drive unit (71), a first friction plate (72), a second friction plate (73), and a pressure spring (74). The clutch drive unit (71) is fixed on the base (1). A rotating shaft (211) is fixed on the winding body (21). The winding body (21) is rotatably connected to the base (1) through the rotating shaft (211). The connecting body (22) is sleeved on the rotating shaft (211). The connecting body (22) is rotatably connected to the rotating shaft (211) and axially fixed. The first friction plate (72) is sleeved on the rotating shaft (211) and fixedly connected to the rotating shaft (211). The second friction plate (73) is sleeved on the rotating shaft (211) and fixedly connected to the rotating shaft (211). The rotating shaft (211) is rotatably connected, and the first friction plate (72), the second friction plate (73), the wire connector (22) and the wire winding body (21) are arranged in sequence. The second friction plate (73) is slidably connected to the wire connector (22) and circumferentially fixed. The pressure spring (74) is located between the second friction plate (73) and the wire connector (22). The clutch drive unit (71) is matched with the second friction plate (73). During processing, the second friction plate (73) adheres to the first friction plate (72) under the action of the pressure spring (74). During wire connection, the clutch drive unit (71) can drive the second friction plate (73) away from the first friction plate (72).

6. The clutch-type automatic taping structure of claim 1, wherein The clutch device includes an electromagnetic coil (75), an armature (76), a fixed friction plate (77), a rotating seat (78), and a disc spring (79). The electromagnetic coil (75) is fixed on the base (1). A rotating shaft (211) is fixed on the winding body (21). The winding body (21) is rotatably connected to the base (1) through the rotating shaft (211). The fixed friction plate (77) is sleeved on the rotating shaft (211) and fixedly connected to the rotating shaft (211). The rotating seat (78) is sleeved on the rotating shaft (211). The rotating seat (78) is rotatably connected to the rotating shaft (211) and axially fixed. The electromagnetic coil (75), the armature (76), the fixed friction plate (77), and the rotating seat (78) are all fixedly connected to the base (1). The friction plate (77) and the winding body (21) are arranged in sequence. The rotating seat (78) is located inside the armature (76) and inside the mating position of the armature (76) and the fixed friction plate (77). The two ends of the butterfly spring (79) are fixed to the rotating seat (78) and the armature (76) respectively. The armature (76) can slide along the axis of the rotating shaft (211). The wire connecting body (22) is circumferentially fixed to the armature (76). During processing, the armature (76) adheres to the fixed friction plate (77) under the action of the butterfly spring (79). During wire connection, the electromagnetic coil (75) can be energized to attract the armature (76) away from the fixed friction plate (77).

7. The clutch-type automatic taping structure of claim 1, wherein The clutch-type automatic wire splicing structure also includes a horizontally arranged wire guide tube (91), which is located between the wire spool assembly (2) and the lower wire threading mechanism (5), and the wire guide tube (91) is matched with the wire clamping member (221).

8. The clutch-type automatic taping structure of claim 7, wherein, The wire clamp (221) is a spring-loaded structure. The clutch-type automatic wire splicing structure also includes a catheter driving mechanism (92). The catheter driving mechanism (92) is connected to the guide wire tube (91) in a transmission manner. The catheter driving mechanism (92) can drive the guide wire tube (91) to move closer to the wire clamp (221) to open the wire clamp (221) or move away from the wire clamp (221) to close the wire clamp (221).

9. The clutch-type automatic taping structure of claim 7, wherein The wire clamp (221) is movably connected to the wire connector (22), and a return spring is connected between the wire clamp (221) and the wire connector (22). The base (1) is also provided with a pressing drive mechanism, which is matched with the position of the wire clamp (221). The pressing drive mechanism can press the wire clamp (221) to open the wire clamp (221), and the return spring can reset the wire clamp (221) to close.

10. The clutch-type automatic taping structure of claim 7, wherein, The wire connector (22) is provided with a wire connector rope (222), one end of which is fixedly connected to the wire connector (22), and the other end of which is connected to the wire clamping member (221). The base (1) is also provided with a wire clamping drive mechanism (223), which is positioned to match the wire clamping member (221). The wire clamping member (221) is normally closed and can be opened when pressed by the wire clamping drive mechanism (223).

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