Multi-head parallel wire electrode cutting machine

Abstract

The invention provides a multi-head parallel wire electrode cutting machine which comprises a machining table and further comprises a plurality of wire guiding devices arranged above the machining table. A plurality of wire winding drums; the wire conveying device is used for establishing a corresponding relation between the wire guiding device and the wire winding drum; the plurality of wire penetrating devices are provided with wire penetrating channels through which the electrode wires penetrate, and are used for bearing the electrode wires led in by the corresponding wire leading devices so as to form a one-way loop of the disposable electrode wires or a closed loop of the recycled electrode wires; the wire guiding device receives and guides the electrode wire guided in from the wire guiding wheel assembly to penetrate into the wire penetrating device so as to form a cutting head corresponding to the machining table. The multiple electrode wires are led into the multiple wire penetrating devices through the multiple wire leading devices so as to form the multiple cutting heads corresponding to the machining table, and synchronous machining of the multiple electrode wires is achieved. Meanwhile, different types of electrode wires can be led in through different wire leading devices, and the operation procedure of synchronous machining of different cutting heads can be formed; and rough machining and finish machining of the cutting head at the same station can be achieved through wire replacement.

Description

Technical Field

[0001] The present invention relates to an electrode wire cutting machine, and particularly to a multi-head parallel electrode wire cutting machine. Background Art

[0002] An electrode wire cutting machine (Wire Electrical Discharge Machining, Wire EDM) is a special processing equipment that uses the principle of electric spark discharge to precisely process conductive materials. Its core feature is that a metal wire (such as molybdenum wire, copper wire, etc.) is used as the tool electrode, and through the numerical control system, the discharge corrosion between the electrode wire and the workpiece is controlled to achieve the cutting processing of complex shapes, and it is widely used in the manufacturing and processing of precision molds, aerospace parts, medical devices, semiconductor devices, etc.

[0003] Among them, for the large-scale processing of the same product, the existing method is to use multiple electrode wire cutting machines for processing simultaneously. This not only requires a large floor area, but also requires manual transfer work between multiple devices, resulting in low work efficiency; and the migration between multiple devices will also cause error accumulation, affecting the accuracy of the final product. In view of the above problems, the Chinese invention patent with the patent number ZL200610038595.5 discloses a multi-head numerical control electric spark wire cutting machine, which adopts multiple pairs of one-to-one corresponding guide wheel pairs to form a closed-loop circuit on the same plane. After the electrode wire is led out from the wire reel, it forms a rectangular wave shape around the wire through each guide wheel pair, and the electrode wire located between the corresponding guide wheel pairs constitutes a high-frequency cutting head, so as to realize that multiple cutting heads process multiple workpieces or multiple sets of stacked workpieces respectively, improving the processing efficiency. However, this technical solution ignores the loss of the electrode wire. For example, for a disposable electrode wire, the electrode wire between the different pairs of same-side guide wheels needs to be cut off together, resulting in waste of the electrode wire; and for the recycled electrode wire, there will be a problem of different losses between the electrode wire between the different pairs of same-side guide wheels and the electrode wire between the same pair of different-side guide wheels.

[0004] Based on the above technical problems, the inventor proposes the technical solution of the present application. 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 a multi-head parallel electrode wire cutting machine, which has the advantages of being able to realize multi-wire synchronous processing and rough and fine processing on the same equipment.

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

[0007] A multi-head parallel electrode wire cutting machine includes a processing table for accommodating the workpiece to be processed, and further includes:

[0008] A plurality of wire guiding devices disposed above the processing table and having wire guiding channels for the electrode wire to penetrate;

[0009] A plurality of wire spools;

[0010] A wire transporting device for establishing a corresponding relationship between the wire guiding device and the wire spool to guide the electrode wire led out from the wire spool to the wire guiding device: including a wire guiding wheel assembly disposed above the wire guiding device, and a floating tensioning assembly disposed on the wire traveling path of the recycled electrode wire; and,

[0011] A plurality of wire threading devices having wire threading channels for the electrode wire to penetrate, receiving the electrode wire introduced by the corresponding wire guiding device to form a one-way loop of a disposable electrode wire or a closed loop of a recycled electrode wire;

[0012] The wire guiding device receives and guides the electrode wire introduced from the wire guiding wheel assembly to penetrate the wire threading device to form a cutting head corresponding to the processing table.

[0013] Adopting the above technical solution, a plurality of wire guiding devices realize introducing a plurality of electrode wires into a plurality of wire threading devices to form a plurality of cutting heads corresponding to the processing table, thereby realizing synchronous processing of a plurality of electrode wires; at the same time, different wire guiding devices can introduce different types of electrode wires, and different cutting heads can be formed to synchronously process different operation procedures; one cutting head performs rough machining, and another cutting head performs finish machining on the workpiece after rough machining, thereby realizing co-table machining of rough and finish processes.

[0014] Further, it further includes a wire changing mechanism for driving a plurality of the wire guiding devices corresponding to the same wire threading device to rotate and dock with the same wire threading device in turn.

[0015] Adopting the above technical solution, the same wire threading device can introduce different types of electrode wires at the same time, and realize entering finish machining through wire changing after rough machining is completed.

[0016] Further, each wire changing mechanism includes a direction adjusting component for driving the wire guiding channel of the wire guiding device to move to the extension line of the wire threading channel of the corresponding wire threading device, and a distance adjusting component for driving the wire threading channel of the wire threading device to abut against the corresponding wire guiding channel.

[0017] Adopting the above technical solution, the wire guiding channel corresponding to the electrode wire to be used is moved to the extension line of the wire threading channel through the direction adjusting component, and the wire threading channel of the wire threading device is abutted against the wire guiding channel in cooperation with the distance adjusting component, so as to introduce the electrode wire in the wire guiding channel into the wire threading channel and form a corresponding cutting head.

[0018] Further, each of the wire guiding devices includes a wire guiding base for carrying the wire guiding channel and driven to move by the direction adjusting assembly, and a pair of wire guiding driving wheels which form a wire guiding gap communicating with the wire guiding channel and drive the inserted electrode wire to move.

[0019] Further, the pair of wire guiding driving wheels are respectively embedded on both sides of the axial direction of the wire guiding channel.

[0020] With the above technical solution, the electrode wire is driven to move by the pair of wire guiding driving wheels.

[0021] Further, the wire guiding wheel assembly includes a moving rod, a support seat movable along the moving rod, a wire guiding wheel arranged on the support seat, a tension sensor arranged on the support seat, and a wire guiding driving member coupled to the tension sensor to receive the sensing signal of the tension sensor and drive the support seat to move correspondingly.

[0022] With the above technical solution, the wire guiding wheel assembly has both the functions of guiding and tensioning. The tension sensor detects the micro deformation of the support seat and generates a corresponding electrical signal. The wire guiding driving member receives the input electrical signal and drives the support seat to move to maintain the tension of the electrode wire.

[0023] Further, the floating tensioning assembly includes a floating rod, a floating wheel movable along the floating rod, a floating driving member for driving the floating wheel to move along the floating rod, and a pair of fixed wheels arranged at one end of the floating rod and parallel to each other; the electrode wire sequentially bypasses one of the fixed wheels, the floating wheel, and the other fixed wheel.

[0024] With the above technical solution, the electrode wire sequentially bypasses one of the fixed wheels, the floating wheel, and the other fixed wheel, so that part of the electrode wire can be released or stored through the displacement of the floating wheel during the wire threading and wire removing stages after the wire winding cylinder is positioned.

[0025] Further, the wire winding cylinder for winding the disposable electrode wire is arranged above the wire guiding wheel assembly, and the wire winding cylinder for winding the recyclable electrode wire is arranged below the wire guiding wheel assembly.

[0026] With the above technical solution, arranging the wire winding cylinder for winding the disposable electrode wire above the wire guiding wheel assembly can shorten the wire traveling path of the electrode wire, and arranging the wire winding cylinder for winding the recyclable electrode wire below the wire guiding wheel assembly is convenient for forming a closed loop.

[0027] Further, the wire threading device includes a front wire threading mechanism for receiving the electrode wire introduced by the wire guiding device and a rear wire threading mechanism for receiving the electrode wire introduced by the front wire threading mechanism, and a cutting head corresponding to the processing table is formed between the front wire threading mechanism and the rear wire threading mechanism.

[0028] By adopting the above technical solution, the front wire threading mechanism is used to connect with the wire leading device, and the rear wire threading mechanism is used to lead out the electrode wire that completes the task of the cutting head to form a one-way loop or a closed loop.

[0029] Furthermore, the rear wire threading mechanism includes a wire return tube with a wire threading channel, a wire return driving member that drives the wire return tube to slide back and forth along the direction of the electrode wire, an outer wall of the wire reel that carries the electrode wire for winding and recycling and opens under the extrusion of the wire return tube to allow the electrode wire to pass through and clamp and fix the electrode wire, and a wire drawing assembly connected to the outlet of the wire return tube.

[0030] By adopting the above technical solution, the electrode wire led out through the wire return tube is fixed and rewound into the wire drum through the clamping component to realize bidirectional circulation, and the disposable electrode wire is pulled out through the wire drawing component to realize unidirectional circulation.

[0031] As described above, the multi-head parallel electrode wire cutting machine of the present invention has the following beneficial effects:

[0032] The present invention provides a multi-head parallel electrode wire cutting machine, comprising a processing table for accommodating a workpiece to be processed, and also comprising: a plurality of wire drawing devices arranged above the processing table and having a wire drawing channel for the electrode wire to be inserted; a plurality of wire winding drums; a wire transport device which establishes a corresponding relationship between the wire drawing device and the wire winding drum so as to lead the electrode wire drawn out from the wire winding drum to the wire drawing device: comprising a wire drawing wheel assembly arranged above the wire drawing device, and a floating tensioning assembly arranged on the wire running path of the recycled electrode wire; and a plurality of wire threading devices having a wire threading channel for the electrode wire to be inserted, receiving the electrode wire introduced by the corresponding wire drawing device to form a one-way loop of the disposable electrode wire or a closed loop of the recycled electrode wire; the wire drawing device The wire device receives and guides the electrode wire introduced from the wire drawing wheel assembly to pass through the wire threading device to form a cutting head corresponding to the processing table; multiple electrode wires are introduced into multiple wire threading devices through multiple wire drawing devices to form multiple cutting heads corresponding to the processing table, thereby realizing synchronous processing of multiple electrode wires; at the same time, different wire drawing devices can introduce different types of electrode wires, which can constitute the operation process of synchronous processing of different cutting heads; one of the cutting heads performs rough processing, and the other cutting head performs fine processing on the workpiece after rough processing, thereby realizing the same-station processing of rough and fine processes; the rough and fine processing of the cutting head at the same workstation can also be achieved by changing the wire, avoiding the error accumulation and parameter difference problems of multiple devices, and improving the accuracy of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Shown is a schematic structural diagram of one embodiment of the present invention.

[0034] Figure 2The figure shows a schematic structural diagram of another embodiment of the present invention.

[0035] Figure 3 The figure shows a schematic structural diagram of another perspective of another embodiment of the embodiment of the present invention.

[0036] Figure 4 As shown Figure 3 an enlarged schematic view of part A in

[0037] Figure 5 As shown Figure 3 an enlarged schematic view of part B in

[0038] Explanation of the reference numerals of each technical feature in the drawings:

[0039] 100, multi-head parallel electrode wire cutting machine; 101, processing table;

[0040] 1, wire guiding device; 11, wire guiding base; 12, wire guiding channel; 13, wire guiding driving wheel pair; 2, wire winding drum; 3, wire transporting device; 31, wire guiding wheel assembly; 311, moving rod; 312, support seat; 313, wire guiding wheel; 32, floating tensioning assembly; 321, floating rod; 322, floating wheel; 323, floating driving member; 324, fixed wheel pair; 4, wire threading device; 41, front wire threading mechanism; 42, rear wire threading mechanism; 421, wire drawing assembly; 4211, wire drawing tube; 4212, wire drawing driving wheel pair; 5, wire changing mechanism; 51, direction adjusting assembly; 52, distance adjusting assembly. Detailed implementation manners

[0041] 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.

[0042] Please refer to Figures 1-5It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to match the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the efficacy that the present invention can produce and the purpose 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 terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope for the implementation of the present invention. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope for the implementation of the present invention. At the same time, it should be noted that the drawings in the specification only show one of the implementation schemes, and all the implementation schemes that can be obviously obtained according to the written description of this application are within the scope covered by the present invention.

[0043] Please refer to Figure 1 , the present invention provides a multi-head parallel electrode wire cutting machine 100, including a processing table 101 for accommodating a workpiece to be processed, and further including: a plurality of wire guiding devices 1 provided above the processing table 101 and having a wire guiding channel 12 for the electrode wire to penetrate; a plurality of wire reels 2; a wire transporting device 3 for establishing a corresponding relationship between the wire guiding device 1 and the wire reel 2 to guide the electrode wire led out from the wire reel 2 to the wire guiding device 1; and a plurality of wire threading devices 4 having a wire threading channel for the electrode wire to penetrate; the wire guiding device 1 receives and guides the electrode wire introduced from the wire guiding wheel assembly 31 to penetrate the wire threading device 4 to form a cutting head corresponding to the processing table 101. Among them, the wire transporting device 3 includes a wire guiding wheel assembly 31 provided above the wire guiding device 1, and a floating tensioning assembly 32 provided on the wire traveling path of the recycled electrode wire. Specifically, the wire guiding wheel assembly 31 includes a moving rod 311, a support seat 312 movable along the moving rod 311, a wire guiding wheel 313 provided on the support seat 312, a tension sensor provided on the support seat 312, and a wire guiding driving member coupled to the tension sensor to receive the sensing signal of the tension sensor and drive the support seat 312 to move correspondingly. Specifically, the moving rod 311 adopts a threaded rod, the wire guiding driving member is a servo motor, and the support seat 312 is threadedly connected to the moving rod 311. The tension sensor detects the micro-deformation of the support seat 312 and generates a corresponding electrical signal to input into the servo motor. The servo motor drives the moving rod 311 to rotate, thereby driving the support seat 312 to move correspondingly along the moving rod 311 to maintain the tension of the electrode wire wound around the wire guiding wheel 313.

[0044] Refer to Figure 2, Specifically, the floating tensioning assembly 32 includes a floating rod 321, a floating wheel 322 that can move along the floating rod 321, a floating driving member 323 that drives the floating wheel 322 to move along the floating rod 321, and a fixed wheel pair 324 provided at one end of the floating rod 321 and arranged in parallel; the electrode wire sequentially bypasses one of the fixed wheels, the floating wheel 322, and the other fixed wheel. In this embodiment, left and right sliding rods are provided on both sides of the parallel floating rod 321, upper and lower sliding blocks are slidably connected to the left and right sliding rods, the upper and lower sliding blocks are threadedly connected to the floating rod 321, the floating wheel 322 is fixedly assembled to the upper sliding block, and a buffer spring with both ends fixedly connected to the upper and lower sliding blocks is assembled between the upper and lower sliding blocks. The buffer spring plays a buffering role during the movement of the floating wheel 322 to prevent the electrode wire from being broken. During the wire removal stage of the floating tensioning assembly 32, after the wire winding cylinder 2 is positioned, the electrode wire can no longer be recovered. At this time, to maintain the tension of the electrode wire, the floating wheel 322 moves along the floating rod 321 under the drive of the floating driving member 323 to move away from the fixed wheel pair 324, realizing the temporary wire storage function; during the wire threading stage, after the wire winding cylinder 2 is positioned, the electrode wire can no longer be conveyed. At this time, the floating wheel 322 moves along the floating rod 321 under the drive of the floating driving member 323 to move closer to the fixed wheel pair 324, thereby releasing the electrode wire.

[0045] In other embodiments, with reference to Figure 2 , Figure 3 and Figure 5 , it further includes a wire changing mechanism 5 that drives a plurality of wire guiding devices 1 corresponding to the same wire threading device 4 to rotate and dock with the same wire threading device 4 in turn. Specifically, each wire changing mechanism 5 includes a wire guiding base 11 for carrying the wire guiding channel 12, and a wire guiding driving wheel pair 13 that forms a wire guiding gap communicating with the wire guiding channel 12 and drives the inserted electrode wire to move. Each wire changing mechanism 5 includes a direction adjusting component 51 that drives the wire guiding channel 12 of the wire guiding device 1 to move to the extension line of the wire threading channel of the corresponding wire threading device 4, and a distance adjusting component 52 that drives the wire threading channel of the wire threading device 4 to abut against the corresponding wire guiding channel 12.

[0046] Among them, the wire threading device 4 includes a front wire threading mechanism 41 for receiving the electrode wire introduced by the wire guiding device 1, and a rear wire threading mechanism 42 for receiving the electrode wire introduced by the front wire threading mechanism 41. A cutting head corresponding to the processing table 101 is formed between the front wire threading mechanism 41 and the rear wire threading mechanism 42. Specifically, the front wire threading mechanism 41 includes a wire threading base for carrying the wire threading channel. The direction adjustment assembly 51 includes a direction moving rod movably connected to the wire guiding base 11, and a direction driving member for driving the wire guiding base 11 to move along the direction moving rod; the distance adjustment assembly 52 includes a distance moving rod movably connected to the wire threading base, and a distance driving member for driving the wire threading base to move along the distance moving rod. In this embodiment, both the direction moving rod and the distance moving rod are threaded rods, and both the direction driving member and the distance driving member are servo motors. That is, the wire guiding base 11, the direction moving rod and the direction driving member, the wire threading base, the distance moving rod and the distance driving member adopt a screw drive structure.

[0047] Please refer to Figure 2 , Figure 2 which specifically shows one of the feasible solutions. Figure 2 On the wire guiding base 11 of the wire guiding device 1 close to the front wire threading mechanism 41, its own wire guiding channel 12 and the wire guiding channels 12 of other wires are carried. When changing the wire, its own wire guiding channel 12 gives way so that the wire guiding channels 12 of other wires are docked with the wire guiding channels 12 on the corresponding wire guiding bases 11 of other wires to form a complete wire guiding channel 12.

[0048] Preferably, the wire guiding driving wheel pair 13 is respectively embedded on both sides of the axial direction of the wire guiding channel 12. The rotation of the wire guiding driving wheel drives the movement of the electrode wire. For example, in the wire threading process, the wire guiding driving wheel rotates forward to drive the electrode wire to move towards the wire threading device 4; in the wire removing process, the wire guiding driving wheel rotates in the reverse direction to drive the recycled electrode wire to retreat into the wire guiding device 1. When the electrode wire is in the working state, the wire guiding driving wheel pair 13 separates in the opposite direction to release the clamping of the electrode wire.

[0049] Preferably, the front wire threading mechanism 41 further includes a wire threading driving wheel pair that forms a wire threading gap communicating with the wire threading channel and drives the inserted electrode wire to move. The wire threading driving wheel pair is respectively embedded on both sides of the axial direction of the wire threading channel. The rotation of the wire threading driving wheel pair drives the movement of the electrode wire. For example, in the wire threading process, the wire threading driving wheel rotates forward to drive the electrode wire to move towards the processing table 101; in the wire removing process, the wire threading driving wheel rotates in the reverse direction to drive the recycled electrode wire to retreat into the wire guiding device 1. When the electrode wire is in the working state, the wire threading driving wheel pair separates in the opposite direction to release the clamping of the electrode wire.

[0050] Specifically, the post-wire threading mechanism 42 includes a wire-returning tube having a wire threading channel, a wire-returning driving member for driving the wire-returning tube to reciprocate along the direction of the electrode wire, a clamping assembly carried on the outer wall of the wire spool 2 for winding and recycling the electrode wire and opening under the extrusion of the wire-returning tube to allow the electrode wire to penetrate and clamping and fixing the electrode wire, and a wire drawing assembly 421 connected to the outlet of the wire-returning tube. Among them, the specific structural design of the wire-returning tube, the wire-returning driving member, and the clamping assembly directly applies the technical solution of the invention titled "A Wire Clamping Device for a Wire Cutting Machine" applied by the applicant on February 23, 2024; the application number is: 202410200700.9. For the specific structural design and functional technical principle, please refer to the patent document of this invention in detail, and it will not be elaborated here.

[0051] Specifically, the wire drawing assembly 421 includes a wire drawing tube 4211 connected to the outlet of the wire-returning tube, and a pair of wire drawing driving wheels 4212 embedded on both axial sides of the wire drawing tube 4211 to drive the electrode wire to move towards the outlet of the wire drawing tube 4211.

[0052] When performing a wire replacement operation on the same wire threading device 4, for example, molybdenum wire is used for rough machining in the early stage. After the rough machining process is completed, the wire spool 2, the wire threading driving wheel pair, and the wire guiding driving wheel pair 13 rotate in the reverse direction to drive the molybdenum wire to retract. When the molybdenum wire retracts until only the end is fixed in the clamping assembly, the wire-returning tube moves towards the wire spool 2 to squeeze the clamping assembly to open it, and the end of the molybdenum wire disengages from the clamping assembly and retracts; after the wire spool 2 stops rotating in place, the floating wheel 322 of the floating tensioning assembly 32 moves away from the fixed wheel pair 324 to temporarily store the molybdenum wire, so that the molybdenum wire retracts into the wire guiding channel 12; at this time, the direction adjustment assembly 51 drives the wire guiding base 11 of the molybdenum wire to give way, and the wire guiding channel 12 of the copper wire enters the extension line of the wire threading channel. The distance adjustment assembly 52 drives the wire threading base to move closer to the wire guiding base 11 of the copper wire so that the wire threading channel abuts against the wire guiding channel 12. The copper wire drawn from the wire spool 2 forms a one-way loop through the wire guiding wheel 313, the wire guiding channel 12, the wire threading channel, and the wire drawing tube 4211, and a cutting head corresponding to the processing table 101 is formed between the wire threading channels of the front wire threading mechanism 41 and the post wire threading mechanism 42.

[0053] Preferably, the spool 2 for winding the disposable electrode wire is arranged above the wire guiding wheel assembly 31, and the spool 2 for winding the recyclable electrode wire is arranged below the wire guiding wheel assembly 31. Arranging the spool 2 for winding the disposable electrode wire above the wire guiding wheel assembly 31 can shorten the wire feeding path of the electrode wire on the one hand. On the other hand, the electrode wire is led out from the spool 2 and sequentially passes through the wire guiding wheel 313, the wire guiding channel 12, the wire threading channel, and the wire drawing tube 4211 to form a one-way loop. Arranging the spool 2 for winding the recyclable electrode wire below the wire guiding wheel assembly 31 of the wire guiding wheel 313 facilitates the electrode wire led out from the spool 2 to sequentially pass through the floating tensioning assembly 32, the wire guiding wheel 313, the wire guiding channel 12, the wire threading channel, and the clamping assembly to form a closed loop.

[0054] The multi-head parallel electrode wire cutting machine 100 provided by the present invention enables multiple wire guiding devices 1 to introduce multiple electrode wires into multiple wire threading devices 4 to form multiple cutting heads corresponding to the processing table 101, thereby realizing the synchronous processing of multiple electrode wires and greatly improving the processing efficiency. At the same time, different wire guiding devices 1 can introduce different types of electrode wires, and different cutting head synchronous processing operation procedures can be formed. One of the cutting heads performs rough machining, and the other cutting head performs finish machining on the workpiece after rough machining, thereby realizing the same-stage processing of rough and finish processes. It is also possible to realize the rough and finish machining of the cutting head at the same station by wire changing, avoiding the error accumulation and parameter difference problems of multiple devices and improving the product accuracy.

[0055] 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 completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A multi-head parallel electrode wire cutting machine, comprising a processing table (101) for accommodating a workpiece to be processed, characterized in that: Also includes: A plurality of wire drawing devices (1) disposed above the processing table (101) and having wire drawing channels (12) for electrode wires to pass through; A plurality of wire reels (2); A corresponding relationship is established between the wire drawing device (1) and the wire winding drum (2) so as to lead the electrode wire drawn from the wire winding drum (2) to the wire transport device (3) of the wire drawing device (1): comprising a wire drawing wheel assembly (31) arranged above the wire drawing device (1), and a floating tensioning assembly (32) arranged on the wire running path of the circulating electrode wire; and, A plurality of wire threading devices (4) having wire threading channels for electrode wires to be threaded, receiving the electrode wires introduced by the corresponding wire drawing devices (1) to form a one-way loop of disposable electrode wires or a closed loop of cyclically used electrode wires; The wire drawing device (1) receives and guides the electrode wire introduced from the wire drawing wheel assembly (31) to pass through the wire threading device (4) to form a cutting head corresponding to the processing table (101).

2. The multi-head parallel electrode wire cutting machine according to claim 1, characterized in that: It also includes a wire changing mechanism (5) for driving a plurality of the wire guiding devices (1) corresponding to the same wire threading device (4) to alternately connect with the same wire threading device (4).

3. The multi-head parallel electrode wire cutting machine according to claim 2, characterized in that: Each of the wire changing mechanisms (5) comprises a direction adjustment component (51) for driving the wire guiding channel (12) of the wire guiding device (1) to move to the extension line of the corresponding wire threading channel of the wire threading device (4), and a distance adjustment component (52) for driving the wire threading channel of the wire threading device (4) to abut against the corresponding wire guiding channel (12).

4. The multi-head parallel electrode wire cutting machine according to claim 3, characterized in that: Each of the wire drawing devices (1) comprises a wire drawing base (11) for carrying the wire drawing channel (12) and driven to move by the direction adjustment component (51), and a wire drawing driving wheel pair (13) which forms a wire drawing gap connected to the wire drawing channel (12) and drives the inserted electrode wire to move.

5. The multi-head parallel electrode wire cutting machine according to claim 2, characterized in that: The wire drawing driving wheel pair (13) is respectively embedded in both axial sides of the wire drawing channel (12).

6. The multi-head parallel electrode wire cutting machine according to claim 1, characterized in that: The wire drawing wheel assembly (31) includes a moving rod (311), a support seat (312) movable along the moving rod (311), a wire drawing wheel (313) arranged on the support seat (312), a tension sensor arranged on the support seat (312), and a wire drawing driving member coupled to the tension sensor to receive a sensing signal of the tension sensor and drive the support seat (312) to move accordingly.

7. The multi-head parallel electrode wire cutting machine according to claim 1, characterized in that: The floating tensioning assembly (32) comprises a floating rod (321), a floating wheel (322) movable along the floating rod (321), a floating driving member (323) driving the floating wheel (322) to move along the floating rod (321), and a fixed wheel pair (324) arranged at one end of the floating rod (321) and arranged in parallel; the electrode wire passes through one of the fixed wheels, the floating wheel (322), and the other fixed wheel in sequence.

8. The multi-head parallel electrode wire cutting machine according to claim 7, characterized in that: The wire reel (2) for winding disposable electrode wire is arranged above the wire drawing wheel assembly (31), and the wire reel (2) for winding recycled electrode wire is arranged below the wire drawing wheel assembly (31).

9. The multi-head parallel electrode wire cutting machine according to claim 8, characterized in that: The wire threading device (4) comprises a front wire threading mechanism (41) for receiving the electrode wire introduced by the wire guiding device (1), and a rear wire threading mechanism (42) for receiving the electrode wire introduced by the front wire threading mechanism (41), wherein a cutting head corresponding to the processing table (101) is formed between the front wire threading mechanism (41) and the rear wire threading mechanism (42).

10. The multi-head parallel electrode wire cutting machine according to claim 9, characterized in that: The rear wire threading mechanism (42) comprises a wire return tube with a wire threading channel, a wire return driving member that drives the wire return tube to slide back and forth along the direction of the electrode wire, an outer wall of the wire reel (2) that carries the electrode wire for winding and recycling and opens under the pressure of the wire return tube to allow the electrode wire to pass through and clamp the electrode wire, and a wire drawing assembly (421) connected to the outlet of the wire return tube.

Images