Wire electrode switching mechanism and wire cutting equipment

Abstract

The invention provides an electrode wire switching mechanism and linear cutting equipment, the electrode wire switching mechanism is arranged on an electrode wire moving path, and the electrode wire switching mechanism comprises a floating tensioning assembly arranged on the wire moving path of a repeatedly used electrode wire; the wire guiding assemblies correspond to different types of electrode wires and comprise wire guiding channels for the electrode wires to penetrate through and wire guiding driving parts for driving the electrode wires to move; the wire penetrating assembly comprises a wire penetrating channel for the electrode wire to penetrate through; the wire changing assembly comprises a cutting-off piece used for cutting off the disposable electrode wire and a wire changing driving piece used for driving the wire guiding channel corresponding to the electrode wire to be used to be in butt joint with the wire penetrating channel. Different wire leading channels and wire penetrating channels are in butt joint through the wire changing assembly so that the electrode wires to be used can be led into a working area according to needs, multi-wire alternating work on the same equipment is achieved, the procedure of transferring among multiple pieces of equipment is directly eliminated, the problems of error accumulation and parameter inconsistency of the multiple pieces of equipment are effectively avoided, and the working efficiency is improved. And the machining precision and the working efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wire cutting, and particularly to an electrode wire conversion mechanism and a wire cutting device. Background Art

[0002] A wire electrical discharge machining (Wire EDM) is a numerically controlled machine tool that uses the principle of electric spark discharge for precision machining. It is mainly used for cutting conductive materials (such as metals), especially suitable for the machining of parts with complex shapes and high precision. Common types of electrode wires used in wire EDM include pure copper wires, molybdenum wires, tungsten wires, zinc-coated copper wires, composite copper-clad steel wires, etc. The selection of electrode wires needs to comprehensively consider factors such as the machining material, machining accuracy, surface quality, and machining cost. For example, for high-precision requirements, pure copper wires are preferably selected; for machining super-hard materials, tungsten wires are preferably used; and for machining cost as the priority, molybdenum wires are selected.

[0003] It can be seen that each type and even different diameters of electrode wires have specific application scenarios and application advantages. However, with the development of high-end intelligent manufacturing, a single type of electrode wire cannot meet the machining requirements. For example, pure copper wires are suitable for the machining of high-precision products, but they have the disadvantages of slow machining speed and high machining cost. Therefore, in actual machining, a "rough + finish" machining mode is adopted, that is, in two steps: 1) rough cutting with a molybdenum wire; 2) finish machining with a pure copper wire. This not only improves the machining speed but also saves the machining cost.

[0004] However, the existing "rough + finish" machining mode requires the cooperation of multiple devices to complete, which inevitably brings problems such as an increase in floor area and a significant increase in energy consumption. Moreover, the coordinated cooperation of multiple devices will also cause problems such as error accumulation of each device and parameter inconsistency between devices. Summary of the Invention

[0005] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide an electrode wire conversion mechanism and a wire cutting device to achieve multi-wire cutting on the same device.

[0006] To achieve the above purpose and other related purposes, the present invention provides the following technical solutions:

[0007] On the one hand, an electrode wire conversion mechanism is provided, which is arranged on the wire feeding path of the electrode wire and includes:

[0008] A floating tensioning assembly arranged on the wire feeding path of the repeatedly used electrode wire;

[0009] A plurality of wire guiding assemblies corresponding to different types of electrode wires, including a wire guiding channel for the electrode wire to pass through and a wire guiding driving member for driving the movement of the electrode wire;

[0010] The wire threading component includes a wire threading channel for the power electrode wire to pass through; and, the wire changing component includes a cutting piece for cutting the disposable electrode wire and a wire changing driving piece for driving the corresponding wire guiding channel of the electrode wire to be used to dock with the wire threading channel.

[0011] To implement the above technical solution, the wire changing component is used to dock the wire guiding channels of different wire guiding components with the wire threading channel of the wire threading component to form a channel that restricts the movement direction of the electrode wire, so as to introduce the electrode wire to be used into the working area as needed. For example, in the rough machining step, the wire changing driving piece drives the wire guiding channel of the molybdenum wire to dock with the wire threading channel of the wire threading component. After the molybdenum wire passes through the wire guiding channel and the wire threading channel in sequence, the molybdenum wire storage cylinder is positioned, the wire clamping component on the molybdenum wire storage cylinder is opened, and under the cooperation of the tension component and the wire guiding driving piece, the molybdenum wire is sent into the wire clamping component on the storage cylinder. After the wire clamping component closes and clamps the molybdenum wire, the storage cylinder rotates and enters the working state; when finish machining is required, the molybdenum wire storage cylinder rotates to the wire removing position, the wire clamping component on the molybdenum wire storage cylinder is opened, and the molybdenum wire retreats into the wire guiding channel under the drive of the tension component, the molybdenum wire storage cylinder and the wire guiding driving piece. The wire changing driving piece drives the wire guiding channel of the copper wire to dock with the wire threading channel, so that the copper wire passes through the wire guiding channel and the wire threading channel in sequence and enters the copper wire drawing component. At this time, the copper wire is in the working state; through the above working process, the multi-wire rotation work on the same device can be realized, directly eliminating the process of transferring between multiple devices, effectively avoiding the problem of error accumulation and parameter inconsistency caused by multiple devices, and improving the machining accuracy and working efficiency.

[0012] Preferably, the wire changing driving piece includes a direction adjusting piece for driving the wire guiding channel to move to the extension line of the wire threading channel, and a distance adjusting piece for driving the wire threading channel to abut against the wire guiding channel.

[0013] To implement the above technical solution, the direction adjusting piece is used to move the wire guiding channel of the electrode wire to be used to the extension line of the wire threading channel, and then the distance adjusting piece is used to drive the wire threading channel to dock with the wire guiding channel, so as to introduce the electrode wire to be used into the working area; the setting of the direction adjusting piece makes the wire guiding components corresponding to different types of electrode wires arranged staggeredly, and only the wire guiding channel of the electrode wire in use is located on the extension line of the wire threading channel, avoiding interference between the wire guiding components corresponding to each electrode wire and making the structure of the device more compact and reasonable.

[0014] Preferably, the wire guiding channel includes a fixed wire guiding channel located on the extension line of the wire threading channel and a movable wire guiding channel driven by the direction adjusting piece to dock with the fixed wire guiding channel.

[0015] Preferably, the movable wire guiding channels are arranged in parallel and are driven by the direction adjusting piece to translate so that the corresponding movable wire guiding channel and the fixed wire guiding channel are docked.

[0016] Preferably, the movable wire-leading channel is arranged in a ring shape and rotates under the driving of the direction adjusting member so that the corresponding movable wire-leading channel and the fixed wire-leading channel are docked.

[0017] To implement the above technical solution, the wire guiding channel is designed in sections, so that the distance between the wire threading channel and the fixed wire guiding channel can be fixed. Therefore, when the wire guiding channel and the wire threading channel are connected, the translation distance or rotation angle of the mobile wire guiding channel can be controlled as needed, and the moving distance of the fixed wire threading channel can be used.

[0018] Preferably, the cutting piece is arranged at the outlet end of the wire drawing channel of the wire drawing assembly corresponding to the disposable electrode wire.

[0019] To implement the above solution, for disposable electrode wires, a cutting piece is required to cut off the used electrode wire portion, that is, the waste wire portion, and retain the electrode wire in the wire guide channel so as to facilitate docking with the wire threading channel during the next rotation.

[0020] Preferably, the wire drawing drive member adopts a pair of driving wheels arranged opposite to each other and drives the electrode wire to move in the wheel gap formed between the two driving wheels when rotating.

[0021] Preferably, the two driving wheels of the wire drawing driving member are respectively embedded on both sides of the axial direction of the wire drawing channel to separate the wire drawing channel.

[0022] To implement the above scheme, the electrode wire is driven to move in two opposite directions by the forward and reverse rotation of a pair of driving wheels arranged in opposite directions, thereby driving the electrode wire to move toward or back to the working area.

[0023] Preferably, the floating tensioning assembly includes a sliding rod arranged vertically in a guide path for reusable electrode wire and a floating wheel slidably connected to the sliding rod, so as to release or store part of the electrode wire through the displacement of the floating wheel during the wire threading and wire removal stages after the wire release end is positioned.

[0024] To implement the above scheme, the reused electrode wire cannot be recovered once the wire-releasing end is positioned during the wire-removing stage. At this time, the floating wheel is controlled to move accordingly along the sliding rod to store part of the electrode wire. Similarly, during the wire-threading stage, the electrode wire can no longer be transported once the wire-releasing end is positioned. At this time, the floating wheel is controlled to move in the opposite direction along the sliding rod to release part of the electrode wire to avoid the risk of breakage due to excessive tension of the electrode wire.

[0025] On the other hand, the present invention provides a wire cutting device, comprising an electrode wire conversion mechanism as described in any one of the above technical solutions, and also comprising a wire storage bin for conveying the corresponding electrode wire to each of the wire lead assemblies, a guide mechanism for guiding the direction of each electrode wire, and a tensioning mechanism arranged on the wire path of each electrode wire to apply tensioning force to the corresponding electrode wire.

[0026] To implement the above technical solution, the wire storage bin conveys the corresponding electrode wire to the corresponding wire guiding component. The electrode wire is guided along a determined wire path through the guiding mechanism, and the tensioning mechanism keeps the electrode wire under an appropriate tension, so that the required electrode wire can be rotated into the working area as needed, realizing multi-wire cutting work on the same device.

[0027] As described above, an electrode wire conversion mechanism and a wire cutting device provided by the present invention have the following beneficial effects:

[0028] The present invention provides an electrode wire conversion mechanism and a wire cutting device, wherein the electrode wire conversion mechanism is arranged on the wire path of the electrode wire and includes: a floating tensioning component arranged on the wire path of the reusable electrode wire; several wire guiding components corresponding to different types of electrode wires, including a wire guiding channel for the electrode wire to pass through and a wire guiding driving part for driving the electrode wire to move; a wire threading component including a wire threading channel for the electrode wire to pass through; and a wire changing component including a cutting part for cutting the disposable electrode wire and a wire changing driving part for driving the wire guiding channel corresponding to the electrode wire to be used to dock with the wire threading channel. Through the wire changing component, the wire guiding channels of different wire guiding components are docked with the wire threading channel of the wire threading component to form a channel restricting the wire path of the electrode wire, so that the electrode wire to be used can be introduced into the working area as needed, realizing multi-wire rotation work on the same device, directly eliminating the process of transferring between multiple devices, effectively avoiding the problems of error accumulation and parameter inconsistency caused by multiple devices, and improving the processing accuracy and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Shown is a schematic structural diagram of the docking of one of the wire guiding components and the wire threading component of the wire cutting device according to an embodiment of the present invention.

[0030] Figure 2 Shown is a schematic structural diagram of the docking of another wire guiding component and the wire threading component of the wire cutting device according to an embodiment of the present invention.

[0031] Figure 3 Shown is a schematic diagram of the wire cutting device according to an embodiment of the present invention from a top view angle.

[0032] Figure 4 Shown is a schematic diagram of the structure of the electrode wire conversion mechanism according to an embodiment of the present invention.

[0033] Figure 5 Shown is a schematic structural diagram of the wire clamping mechanism according to an embodiment of the present invention.

[0034] Figure 6 Shown is Figure 2 an enlarged schematic diagram of part A.

[0035] Descriptions of the reference numerals of each technical feature in the drawings:

[0036] 100, Wire cutting equipment; 101, Frame;

[0037] 1, Wire guiding assembly; 11, Wire guiding base; 12, Wire guiding channel; 13, Wire guiding driving part; 131, Driving wheel;

[0038] 2, Wire threading assembly; 21, Wire threading base; 22, Wire threading channel;

[0039] 3, Wire changing assembly; 31, Direction adjusting part; 32, Distance adjusting part; 321, Distance adjusting driving part; 322, Distance adjusting rod;

[0040] 4, Wire storage bin;

[0041] 5, Guiding mechanism;

[0042] 6, Floating tensioning assembly; 61, Sliding rod; 62, Floating wheel;

[0043] 7, Wire drawing assembly; 71, Wire drawing tube; 72, Wire drawing wheel;

[0044] 8, Wire clamping assembly. Detailed implementation manners

[0045] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0046] Please refer to Figures 1 to 6 . It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limited conditions for the implementation of the present invention. Therefore, they do not have any technical substance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the drawings in this specification are only used to show one specific implementation manner of the present invention and are not limited to the only implementation manner. The implementation manners that can be obviously known to those skilled in the art through the written records of this application document all fall within the scope covered by the present invention.

[0047] Please refer to Figures 1 - 3 . The present invention provides a wire cutting equipment 100, including a frame 101, a wire storage bin 4, a guiding mechanism 5, a tensioning mechanism, and an electrode wire conversion mechanism carried on the frame 101.

[0048] Among them, the wire storage bin 4 includes a plurality of wire storage cylinders respectively wound with different types of electrode wires. For the convenience of understanding, refer to the attached Figure 3 description in the specification. For example, as shown in the attachedFigure 3 The shown wire storage cylinder wound with reusable electrode wire, combined with Figure 5 , a wire clamping assembly 8 is provided on the wire storage cylinder, such as a molybdenum wire storage cylinder; and a wire storage cylinder wound with disposable electrode wire, such as a pure copper wire storage cylinder, combined with Figure 6 , a wire drawing assembly 7 that cooperates with the disposable electrode wire is carried on the frame 101. It should be emphasized that the accompanying drawings of the specification only show one of the implementation schemes. The number of wire storage cylinders in the wire storage bin 4 can be 3 or more.

[0049] Please refer to Figure 5 , for the specific structure and working principle of the wire clamping assembly 8 provided on the wire storage cylinder of the reusable electrode wire, see the invention titled: A wire clamping device for a wire cutting machine; application number: 202410200700.9, which was applied by the applicant on February 23, 2024. The wire clamping assembly 8 in the present invention directly applies this patented technology, and the implementation principle and functions are the same.

[0050] Please refer to Figures 1 - 3 , to achieve the purpose of transporting the electrode wire from the wire storage cylinder to the working area, the electrode wire is guided into the working area through the guiding mechanism 5 and the electrode wire conversion mechanism. Specifically, the guiding mechanism 5 adopts a plurality of guiding wheels arranged along the path from the wire storage cylinder to the electrode wire conversion mechanism, and the electrode wire enters the electrode wire conversion mechanism along the guiding wheels. At the same time, in order to maintain the necessary tension for the movement and transportation of the electrode wire, a tensioning mechanism is provided on the running path of the electrode wire. The specific tensioning mechanism selects a suitable structure according to the type of electrode wire. For example, for molybdenum wire used in fast wire cutting processing, the tensioning mechanism adopts a mechanical spring tensioning mechanism; for pure copper wire used in slow wire cutting processing, the tensioning mechanism adopts a servo closed-loop tensioning mechanism. The tensioning mechanism used in the present invention is an existing mature technology, so it will not be specifically elaborated.

[0051] Refer to Figures 1 to 4 , the electrode wire conversion mechanism is provided on the wire running path of the electrode wire, and includes: a floating tensioning assembly 6 provided on the wire running path of the reusable electrode wire; several wire guiding assemblies 1, wire threading assemblies 2, and wire changing assemblies 3 corresponding to different types of electrode wires.

[0052] Refer to Figure 4, Specifically, the floating tensioning assembly 6 includes a sliding rod 61 arranged along the guiding path of the vertically reusable electrode wire and a floating wheel 62 slidably connected to the sliding rod 61. After the reusable electrode wire is used, it needs to be recycled, that is, the wire is removed. Once the wire feeding end, namely the wire storage cylinder, is positioned during the wire removal stage, the wire storage cylinder can no longer recycle the electrode wire. At this time, the floating wheel 62 is controlled to move correspondingly along the sliding rod 61, stretching the distance between the floating wheel 62 and the adjacent guiding wheel to store part of the electrode wire; similarly, once the wire feeding end, namely the wire storage cylinder, is positioned during the wire threading stage, the electrode wire can no longer be conveyed. At this time, the floating wheel 62 is controlled to move in the reverse direction along the sliding rod 61, shortening the distance between the floating wheel 62 and the adjacent guiding wheel to release part of the electrode wire, avoiding the risk of wire breakage caused by excessive tension of the electrode wire.

[0053] Among them, the wire guiding assembly 1 includes a wire guiding base 11 carried on the frame 101, a wire guiding channel 12 carried on the wire guiding base 11 for the electrode wire to pass through, and a wire guiding driving member 13 for driving the movement of the electrode wire; specifically, in this embodiment, the wire guiding channel 12 is a hollow tube with both ends open, and the wire guiding driving member 13 is a pair of driving wheels 131 arranged oppositely, which drive the electrode wire to move within the wheel gap formed between the two driving wheels 131 when rotating. Preferably, the two driving wheels 131 of the wire guiding driving member 13 are respectively embedded on both sides of the axial direction of the wire guiding channel 12 to separate the wire guiding channel 12. By the forward and reverse rotation of the oppositely arranged driving wheels 131, the driving of the electrode wire to move in two opposite directions is realized, so as to realize the driving of the electrode wire to be conveyed to or retracted from the working area. The wire guiding driving member 13 opens backward to release the clamping of the electrode wire when the electrode wire is in the working state.

[0054] Among them, the wire threading assembly 2 includes a wire threading base 21 carried on the frame 101, a first wire threading channel 22 carried on the wire threading base 21 for the electrode wire to pass through, and a second wire threading channel 22 carried on the frame 101; specifically, in this embodiment, the first wire threading channel 22 and the second wire threading channel 22 are hollow tubes with both ends open. Preferably, driving wheels 131 are respectively embedded on both sides of the axial direction of the first wire threading channel 22 to separate the wire threading channel 22. The functions of this pair of driving wheels 131 are the same as those of the wire guiding driving member 13. Similarly, when the electrode wire is in the working state, they open backward to release the clamping of the electrode wire.

[0055] Combined with Figure 6 , the wire drawing assembly 7 is arranged at the outlet end of the second wire threading channel 22, including a wire drawing tube located on the extension line of the second wire threading channel 22 and a pair of wire drawing wheels respectively embedded on both sides of the axial direction of the wire drawing tube.

[0056] Among them, the wire changing assembly 3 includes a cutting member for cutting the disposable electrode wire and a wire changing driving member for driving the corresponding wire guiding channel 12 of the electrode wire to be used to dock with the wire threading channel 22.

[0057] Preferably, the cutting member is provided at the outlet end of the wire guiding channel 12 of the wire guiding assembly 1 corresponding to the disposable electrode wire. Specifically, the cutting member can adopt any one of a mechanical cutting structure, an electron beam cutting structure, a plasma cutting structure, an electric discharge machining cutting structure, etc. For the disposable electrode wire, the used part of the electrode wire, that is, the waste wire part, needs to be cut off, and the electrode wire located in the wire guiding channel 12 is reserved for docking with the wire threading channel 22 during the next rotation. The cut waste wire is pulled out by the wire drawing assembly 7 and collected in the waste wire box.

[0058] Among them, the wire changing driving member includes a direction adjusting member 31 for driving the wire guiding channel 12 to move to the extension line of the wire threading channel 22, and a distance adjusting member 32 for driving the wire threading channel 22 to abut against the wire guiding channel 12.

[0059] Specifically, the direction adjusting member 31 includes a wire guiding sliding module connecting the wire guiding base 11 and the frame 101. The wire guiding sliding module includes a wire guiding slide rail carried on the frame 101, a wire guiding slider slidably connected to the wire guiding slide rail and fixedly connected to the wire guiding base 11, and a direction driving member for driving the wire guiding slider to move on the wire guiding slide rail. Among them, the axial direction of the wire guiding slide rail is perpendicular to the extension line of the wire threading channel 22, so that the wire guiding channel 12 is driven by the direction adjusting member 31 to move to the extension line of the wire threading channel 22. Specifically, the direction driving member can adopt a driving cylinder or a motor. When the direction driving member is a motor, the wire guiding slide rail is adaptively provided with a threaded rod.

[0060] The setting of the direction adjusting member 31 makes the wire guiding assemblies 1 corresponding to different types of electrode wires arranged staggeredly, and only the wire guiding channel 12 of the electrode wire in use is located on the extension line of the wire threading channel 22, avoiding interference between the wire guiding assemblies 1 corresponding to each electrode wire, and also making the structure of the device more compact and reasonable.

[0061] Specifically, the distance adjusting member 32 includes a wire threading sliding module connecting the wire threading base 21 and the frame 101. The wire threading sliding module includes a wire threading slide rail carried on the frame 101, a wire threading slider slidably connected to the wire threading slide rail and fixedly connected to the wire threading base 21, and a distance driving member for driving the wire threading slider to move on the wire threading slide rail. Among them, the direction of the wire threading slide rail is parallel to the extension line of the wire threading channel 22, so that the wire threading channel 22 is driven by the distance adjusting member 32 to abut against the wire guiding channel 12. The distance driving member can adopt a driving cylinder or a motor. When the distance driving member is a motor, the wire threading slide rail is adaptively provided with a threaded rod.

[0062] In other embodiments, the wire guiding channel 12 can be segmented and designed into a fixed wire guiding channel 12 located on the extension line of the wire threading channel 22 and a movable wire guiding channel 12 driven by the direction adjusting member 31 to dock with the fixed wire guiding channel 12. Specifically, the fixed wire guiding channel 12 is a section close to the wire threading channel 22. The movable wire guiding channels 12 are arranged in parallel and translated under the drive of the direction adjusting member 31 so that the corresponding movable wire guiding channel 12 and the fixed wire guiding channel 12 are docked. In other embodiments, the movable wire guiding channels 12 are arranged in a ring and rotated under the drive of the direction adjusting member 31 so that the corresponding movable wire guiding channel 12 and the fixed wire guiding channel 12 are docked. The segmented design of the wire guiding channel 12 can fix the distance between the wire threading channel 22 and the fixed wire guiding channel 12. Therefore, when docking the wire guiding channel 12 and the wire threading channel 22, the translation distance or rotation angle of the movable wire guiding channel 12 can be controlled as needed, and the moving distance of the wire threading channel 22 can be fixed.

[0063] The wire cutting device 100 provided by the present invention realizes the docking of the wire guiding channels 12 of different wire guiding components 1 and the wire threading channels 22 of the wire threading component 2 through the wire changing component 3 to form a channel for restricting the running direction of the electrode wire, so as to introduce the electrode wire to be used into the working area as needed. The specification appendix Figure 1 and appendix Figure 2 respectively illustrate the docking states of different wire guiding components 1 and the wire threading component 2. For example, in the rough machining step, the wire changing driving member drives the wire guiding channel 12 of the molybdenum wire to dock with the wire threading channel 22 of the wire threading component 2, so that the molybdenum wire passes through the wire guiding channel 12 and the wire threading channel 22 in sequence. The molybdenum wire storage cylinder is positioned, and the wire clamping component on the molybdenum wire storage cylinder is opened. Under the cooperation of the tension component and the wire guiding driving wheel, the molybdenum wire is sent into the wire clamping component on the storage cylinder. After the wire clamping component closes and clamps the molybdenum wire, the storage cylinder rotates and enters the working state; when fine machining is required, the molybdenum wire storage cylinder rotates to the wire removing position, the wire clamping component on the molybdenum wire storage cylinder is opened, and the molybdenum wire retreats into the wire guiding channel 12 under the drive of the tension component, the storage cylinder and the wire guiding driving member 13. The wire changing driving member drives the wire guiding channel 12 of the copper wire to dock with the wire threading channel 22, so that the copper wire passes through the wire guiding channel 12 and the wire threading channel 22 in sequence and enters the copper wire drawing component 7. At this time, the copper wire is in the working state; through the above working process, the multi-wire rotation work on the same device can be realized, the process of transferring between multiple devices is directly eliminated, and the problems of error accumulation and parameter inconsistency caused by multiple devices are effectively avoided, improving the machining accuracy and working efficiency.

[0064] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An electrode wire conversion mechanism, characterized in that: It is located on the electrode wire path and includes: A floating tensioning assembly (6) provided on a wire running path of a reusable electrode wire; A plurality of wire drawing assemblies (1) corresponding to different types of electrode wires, comprising a wire drawing channel (12) for the electrode wires to pass through and a wire drawing driving member (13) for driving the electrode wires to move; A wire threading assembly (2), comprising a wire threading channel (22) for the electrode wire to pass through; and The wire changing assembly (3) comprises a cutting piece for cutting off a disposable electrode wire and a wire changing driving piece for driving the wire guiding channel (12) corresponding to the electrode wire to be used to dock with the wire threading channel (22).

2. The electrode wire conversion mechanism according to claim 1, characterized in that: The wire-changing drive member comprises a direction adjustment member (31) for driving the wire-leading channel (12) to move to an extension line of the wire-threading channel (22), and a distance adjustment member (32) for driving the wire-threading channel (22) to abut against the wire-leading channel (12).

3. The electrode wire conversion mechanism according to claim 1, characterized in that: The wire guiding channel (12) comprises a fixed wire guiding channel (12) located on the extension line of the wire threading channel (22) and a movable wire guiding channel (12) driven by a direction adjusting member (31) to dock with the fixed wire guiding channel (12).

4. The electrode wire conversion mechanism according to claim 3, characterized in that: The movable wire-leading channels (12) are arranged in parallel and are translated under the drive of the direction adjusting member (31) so that the corresponding movable wire-leading channels (12) and the fixed wire-leading channels (12) are docked.

5. The electrode wire conversion mechanism according to claim 3, characterized in that: The movable wire-leading channel (12) is arranged in a ring shape and rotates under the driving of the direction adjusting member (31) so that the corresponding movable wire-leading channel (12) and the fixed wire-leading channel (12) are docked.

6. The electrode wire conversion mechanism according to claim 1, characterized in that: The cutting piece is arranged at the outlet end of the wire drawing channel (12) of the wire drawing assembly (1) corresponding to the disposable electrode wire.

7. The electrode wire conversion mechanism according to claim 1, characterized in that: The wire drawing driving member (13) adopts a pair of driving wheels (131) arranged opposite to each other and drives the electrode wire to move in the wheel gap formed between the two driving wheels (131) when rotating.

8. The electrode wire conversion mechanism according to claim 7, characterized in that: The two driving wheels (131) of the wire drawing driving member (13) are respectively embedded on two axial sides of the wire drawing channel (12) to separate the wire drawing channel (12).

9. The electrode wire conversion mechanism according to claim 1, characterized in that: The floating tensioning assembly (6) comprises a sliding rod (61) arranged vertically on a guide path for repeatedly using the electrode wire and a floating wheel (62) slidably connected to the sliding rod (61), so that part of the electrode wire can be released or stored by displacement of the floating wheel (62) during the wire threading and wire removal stages after the wire release end is positioned.

10. A wire cutting device, characterized in that: It comprises an electrode wire conversion mechanism as described in any one of claims 1 to 9, and also comprises a wire storage bin (4) for conveying the corresponding electrode wire to each of the wire drawing assemblies (1), a guide mechanism (5) for guiding the direction of each electrode wire, and a tensioning mechanism arranged on the wire running path of each electrode wire to apply tensioning force to the corresponding electrode wire.

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