Double-wire system of wire cutting machine, wire cutting machine and wire changing method of wire cutting machine

Abstract

The invention provides a double-wire system of a wire cutting machine, the wire cutting machine and a wire changing method of the wire cutting machine, which are applied to the field of wire cutting machines, and are characterized in that the double-wire system comprises a limiting assembly used for limiting an electrode wire in the length direction of a machining position; the molybdenum wire winding cylinder is used for containing a molybdenum wire; the molybdenum wire leading-in module is used for driving the molybdenum wire led out of the molybdenum wire winding barrel to move and leading the molybdenum wire into the limiting assembly, and driving the molybdenum wire to return to the molybdenum wire leading-in module when the type of the electrode wire is replaced; the copper wire winding cylinder is used for containing a copper wire; the copper wire leading-in module is used for driving the copper wire led out of the copper wire winding barrel to move and leading the copper wire into the limiting assembly, the copper wire is driven to return to the copper wire leading-in module when the type of the electrode wire is replaced, and the molybdenum wire leading-in module and the copper wire leading-in module are alternately matched with the limiting assembly; the cutting device has the technical effect that a copper wire or a molybdenum wire can be respectively used for cutting a workpiece.

Description

Technical Field

[0001] The invention relates to the field of wire cutting machines, and in particular to a double-wire system of a wire cutting machine, a wire cutting machine and a wire changing method thereof. Background Art

[0002] Wire cutting is a process that uses a high-speed moving electrode wire to generate spark discharge between the electrode wire and the workpiece when electricity is applied to the electrode wire and the workpiece, thereby cutting the workpiece using high temperature. Currently, there are two commonly used electrode wires: molybdenum wire and copper wire. The cutting accuracy of molybdenum wire is generally lower than that of copper wire, but molybdenum wire can generally be recycled, while copper wire is generally scrapped after cutting.

[0003] At present, a Chinese invention patent with the announcement number CN116213858A discloses an automatic wire threading and wire removal device for wire cutting, including a machine body, a wire threading mechanism arranged on the machine body, a wire feeding mechanism, a wire reel, a constant tension adjustment mechanism and a controller. The constant tension adjustment mechanism includes a tension sensor and a tensioning wheel. The tension sensor is used to detect the tension of the electrode wire. The tensioning wheel can move to adjust the position and tension of the electrode wire. A wire clamping mechanism is arranged on the wire reel.

[0004] An existing wire cutting automatic wire threading and wire removal device is a common wire cutting device. However, due to the different costs and precisions of cutting with molybdenum wire and cutting with molybdenum wire, general manufacturers will prepare cutting equipment with copper wire and cutting equipment with molybdenum wire respectively and use them according to demand, which increases the procurement cost of the equipment. Therefore, a cutting device that can install both molybdenum wire and copper wire is needed to reduce the procurement cost of the equipment. Summary of the invention

[0005] A first aspect of the present invention provides a double-wire system for a wire cutting machine, which has the advantage of being able to cut a workpiece using copper wire or molybdenum wire respectively.

[0006] A second aspect of the present invention provides a wire cutting machine.

[0007] A third aspect of the present invention provides a wire changing method for a wire cutting machine.

[0008] The first aspect of the present invention provides the following technical solution: a double-wire system of a wire cutting machine, comprising:

[0009] A limiting component for limiting the length direction of the electrode wire at the processing position;

[0010] A molybdenum wire winding drum containing molybdenum wire;

[0011] A molybdenum wire introduction module, used for driving the molybdenum wire led out from the molybdenum wire winding drum to move and introduce the molybdenum wire into the limiting assembly, and driving the molybdenum wire to retreat to the molybdenum wire introduction module when changing the type of electrode wire;

[0012] a copper wire reel containing copper wire; and,

[0013] The copper wire introduction module is used to drive the copper wire led out from the copper wire winding drum to move and introduce the copper wire into the limiting component, and drive the copper wire back to the copper wire introduction module when changing the type of electrode wire. The molybdenum wire introduction module and the copper wire introduction module cooperate with the limiting component alternately.

[0014] Through the above technical scheme, when the molybdenum wire cutting is replaced by the copper wire cutting, the molybdenum wire introduction module drives the molybdenum wire to retract into the molybdenum wire introduction module, and then the molybdenum wire introduction module is disengaged from the limiting component, and the copper wire introduction module reaches the position cooperating with the limiting component, and then the copper wire introduction module drives the copper wire led out from the copper wire winding drum to move, so as to introduce the copper wire into the limiting component; when the copper wire cutting is replaced by the molybdenum wire cutting, the copper wire introduction module drives the copper wire to retract into the copper wire introduction module, and then the copper wire introduction module is disengaged from the limiting component, and the molybdenum wire introduction module reaches the position cooperating with the limiting component, and then the molybdenum wire introduction module drives the molybdenum wire led out from the molybdenum wire winding drum to move, so as to introduce the molybdenum wire into the limiting component, thereby realizing the switching between molybdenum wire cutting and copper wire cutting, so that there is no need to purchase molybdenum wire cutting equipment and copper wire cutting equipment separately, thereby reducing the equipment procurement cost.

[0015] In one embodiment of the present invention, the limiting assembly includes a first limiting block and a second limiting block that are separately arranged, the first limiting block is provided with a first channel for the electrode wire to pass through and a first limiting hole that is connected to the first channel and only allows the electrode wire to pass through, the second limiting block is provided with a second channel for the electrode wire to pass through and a second limiting hole that is connected to the second channel and only allows the electrode wire to pass through.

[0016] Through the above technical solution, the first limiting hole cooperates with the second limiting hole to enable the electrode wire to maintain a specific length direction between the first limiting hole and the second limiting hole under a certain tension, thereby ensuring that the workpiece can be cut stably.

[0017] In one embodiment of the present invention, the molybdenum wire introduction module comprises:

[0018] A first mounting frame; a first wire guide block mounted on the first mounting frame, the first wire guide block having a first wire guide channel through which the molybdenum wire passes and which limits the direction of the molybdenum wire so that the molybdenum wire enters the first channel; a molybdenum wire driving assembly mounted on the first mounting frame and used to drive the molybdenum wire to move back and forth; and a first alignment driving device that drives the first mounting frame to move so as to align the first wire guide channel with the first channel when the molybdenum wire is introduced into the limiting assembly, and drives the first mounting frame to move to make way when the type of electrode wire is changed.

[0019] Through the above technical solution, in the process of switching from copper wire to molybdenum wire, the first alignment drive device drives the first mounting frame to move so that the first wire lead channel is aligned with the first channel of the limiting component, and then the molybdenum wire driving component drives the molybdenum wire to move so that the molybdenum wire passes through the first wire lead channel and enters the first channel to achieve the installation of the molybdenum wire; in the process of switching from molybdenum wire to copper wire, the first alignment drive device drives the first mounting frame to slide and make way for the copper wire introduction module.

[0020] In one embodiment of the present invention, the molybdenum wire driving assembly comprises:

[0021] At least one pair of first driving wheels; a first clamping driving device for driving the first driving wheels to clamp the molybdenum wire; and a first rotating driving device for driving the first clamping wheel to rotate back and forth to drive the molybdenum wire to move.

[0022] Through the above technical solution, when driving the molybdenum wire to move, the first clamping drive device drives the paired first drive wheels to clamp the molybdenum wire, and then the first rotation drive device drives the first drive wheel to rotate, and the friction force between the molybdenum wire and the first drive wheel is used to make the first drive wheel drive the molybdenum wire to move.

[0023] In one embodiment of the present invention, the molybdenum wire introduction module further includes at least one first direction-changing wheel for changing the direction of the molybdenum wire so that the molybdenum wire is led out of the molybdenum wire winding drum and enters the first wire leading channel.

[0024] Through the above technical solution, the first direction-changing wheel changes the direction of the molybdenum wire so that the molybdenum wire is led out of the molybdenum wire winding drum and then enters the first wire leading channel.

[0025] In one embodiment of the present invention, the copper wire introduction module includes:

[0026] A second mounting frame; a second wire drawing block mounted on the second mounting frame, the second wire drawing block having a second wire drawing channel through which the copper wire passes and which limits the direction of the copper wire so that the copper wire enters the first channel; a copper wire driving assembly mounted on the second mounting frame and used to drive the copper wire to move back and forth; and a second alignment driving device for driving the second mounting frame and the limiting assembly to move relative to each other so that the second wire drawing channel is aligned with the first channel when the copper wire is introduced into the limiting assembly, and driving the second mounting frame to slide and make way when the type of electrode wire is changed.

[0027] Through the above technical solution, in the process of switching from molybdenum wire to copper wire, the second alignment drive device drives the second mounting frame to move so that the second wire lead channel is aligned with the first channel of the limiting component, and then the copper wire drive component drives the copper wire to move so that the copper wire passes through the second wire lead channel and enters the first channel to achieve the installation of the copper wire; in the process of switching from copper wire to molybdenum wire, the second alignment drive device drives the second mounting frame to slide and make way for the molybdenum wire introduction module.

[0028] In one embodiment of the present invention, the copper wire driving assembly includes:

[0029] At least one pair of second driving wheels; a second clamping driving device driving the second driving wheels to clamp the copper wire; and a second rotating driving device driving the second clamping wheels to reciprocate to drive the copper wire to move.

[0030] Through the above technical solution, when driving the copper wire to move, the second clamping drive device drives the paired second drive wheels to clamp the copper wire, and then the second rotation drive device drives the second drive wheel to rotate, and the friction force between the copper wire and the second drive wheel is used to make the second drive wheel drive the copper wire to move.

[0031] In one embodiment of the present invention, the copper wire introduction module further includes at least one second direction-changing wheel for changing the direction of the copper wire so that the copper wire is led out from the copper wire winding drum and enters the second wire-leading channel.

[0032] Through the above technical solution, the second direction-changing wheel changes the direction of the copper wire so that the copper wire is led out from the copper wire winding drum and then enters the second wire-leading channel.

[0033] The second aspect of the present invention provides the following technical solution: a wire cutting machine, comprising the double wire system of the wire cutting machine described above, further comprising:

[0034] Pressing a pressing sheet disposed on the molybdenum wire winding drum;

[0035] A wire conveying pipe, wherein a wire conveying channel for the electrode wire to pass through is arranged in the conveying pipe, and the electrode wire enters the wire conveying channel after passing through the limiting component;

[0036] A wire feeding drive device drives the wire feeding tube to move so that the wire feeding tube squeezes the pressing plate to open the pressing plate, and the molybdenum wire enters between the pressing plate and the molybdenum wire winding drum to be squeezed and fixed, so that the head and tail ends of the molybdenum wire are fixed to the molybdenum wire winding drum, and when the molybdenum wire is replaced with copper wire, the wire feeding tube is driven to squeeze the pressing plate to open the pressing plate again, and the molybdenum wire introduction module drives the molybdenum wire to retreat;

[0037] at least one pair of copper wire driving wheels, the copper wire driving wheels clamp the copper wire;

[0038] A processing driving member, which drives the copper wire driving wheel to rotate so as to pull the copper wire to move when the copper wire is used for processing;

[0039] A scrap collection area where the copper wire is stored as scrap after processing; and,

[0040] The cutting device cuts off the copper wire when the copper wire is replaced with the molybdenum wire, and part of the cut copper wire returns to the copper wire introduction module, and the other part enters the waste collection area.

[0041] Through the above technical scheme, if the copper wire is replaced with molybdenum wire, the cutting device cuts the copper wire; if the molybdenum wire is switched to copper wire, the wire feeding drive device drives the wire feeding tube to move so that the wire feeding tube squeezes the pressing plate to open the pressing plate; if the copper wire is replaced with molybdenum wire, part of the copper wire returns to the copper wire introduction module, and the remaining copper wire enters the waste collection area as waste; if the molybdenum wire is switched to copper wire, the molybdenum wire returns to the molybdenum wire introduction module; if the copper wire is replaced with molybdenum wire, the molybdenum wire introduction module introduces the molybdenum wire into the limiting assembly, and the molybdenum wire passes through the limiting assembly and the wire feeding tube and is pressed and fixed on the molybdenum wire winding drum by the pressing plate; if the molybdenum wire is switched to copper wire, the copper wire introduction module introduces the copper wire into the limiting assembly, and the copper wire passes through the limiting assembly and the copper wire driving wheel and enters the waste collection area, thereby realizing the switching between molybdenum wire cutting and copper wire cutting, so that there is no need to purchase molybdenum wire cutting equipment and copper wire cutting equipment separately, thereby reducing the equipment procurement cost.

[0042] The third aspect of the present invention provides the following solution: a wire changing method for a wire cutting machine, using the above-mentioned wire cutting machine, comprising the following steps:

[0043] S1. If the copper wire is replaced with a molybdenum wire, the cutting device cuts the copper wire; if the molybdenum wire is switched to a copper wire, the wire feeding drive device drives the wire feeding tube to move so that the wire feeding tube squeezes the pressing sheet to open the pressing sheet;

[0044] S2. If the copper wire is replaced with a molybdenum wire, part of the copper wire is returned to the copper wire introduction module, and the remaining copper wire enters the waste collection area as waste; if the molybdenum wire is switched to a copper wire, the molybdenum wire is returned to the molybdenum wire introduction module;

[0045] S3. If the copper wire is replaced with molybdenum wire, the molybdenum wire introduction module introduces the molybdenum wire into the limiting component. After the molybdenum wire passes through the limiting component and the wire conveying tube, it is pressed and fixed on the molybdenum wire winding drum by the pressing plate. If the molybdenum wire is switched to copper wire, the copper wire introduction module introduces the copper wire into the limiting component. After the copper wire passes through the limiting component and the copper wire driving wheel, it enters the waste collection area.

[0046] As described above, the double-wire system of the wire cutting machine of the present invention has the following beneficial effects:

[0047] When the molybdenum wire cutting is replaced by the copper wire cutting, the molybdenum wire introduction module drives the molybdenum wire to retract into the molybdenum wire introduction module, and then the molybdenum wire introduction module is disengaged from the limiting assembly, and the copper wire introduction module reaches a position cooperating with the limiting assembly, and then the copper wire introduction module drives the copper wire led out from the copper wire winding drum to move, so as to introduce the copper wire into the limiting assembly; when the copper wire cutting is replaced by the molybdenum wire cutting, the copper wire introduction module drives the copper wire to retract into the copper wire introduction module, and then the copper wire introduction module is disengaged from the limiting assembly, and the molybdenum wire introduction module reaches a position cooperating with the limiting assembly, and then the molybdenum wire introduction module drives the molybdenum wire led out from the molybdenum wire winding drum to move, so as to introduce the molybdenum wire into the limiting assembly, thereby realizing the switching between molybdenum wire cutting and copper wire cutting, thereby eliminating the need to purchase molybdenum wire cutting equipment and copper wire cutting equipment separately, thereby reducing the equipment procurement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 Shown is a schematic diagram of the wire cutting machine disclosed in Example 1 of the present invention;

[0049] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0050] Figure 3 It is a schematic diagram showing the main structure of the double-wire system of the wire cutting machine disclosed in Example 1 of the present invention;

[0051] Figure 4 It is a schematic diagram showing a partial structure of the wire cutting machine disclosed in Embodiment 1 of the present invention from another angle;

[0052] Figure 5 A cross-sectional view showing a limiting assembly of a wire cutting machine disclosed in Embodiment 1 of the present invention;

[0053] Figure 6 It is a schematic diagram showing the assembly relationship of the wire cutting machine disclosed in Embodiment 1 of the present invention when using copper wire for cutting;

[0054] Figure 7 It is a schematic diagram showing the assembly relationship of the wire cutting machine disclosed in Embodiment 1 of the present invention when using molybdenum wire for cutting;

[0055] Figure 8 It is a flow chart showing the replacement of the molybdenum wire with the copper wire disclosed in Example 2 of the present invention;

[0056] Fig. 9 Shown is a flow chart of replacing the copper wire with molybdenum wire disclosed in Example 2 of the present invention.

[0057] Description of technical feature numbers in the accompanying drawings:

[0058] 1. Base; 2. Bracket; 3. Wire winding base; 4. Wire winding support frame; 5. Molybdenum wire winding drum; 6. First sliding frame; 8. Second sliding frame; 9. Third sliding frame; 10. Parts mounting frame; 11. First X-axis sliding frame; 12. First X-axis driving device; 13. First Y-axis sliding frame; 14. First Y-axis driving device; 15. Limiting assembly; 16. First channel; 17. First limiting hole; 18. Second channel; 19. Second limiting hole; 20. Copper wire winding drum; 21. Second wire winding driving device; 22. Molybdenum wire introduction module; 24. First driving wheel; 25. First clamping driving device; 26. First rotating driving device Device; 27, copper wire introduction module; 29, second drive wheel; 30, second clamping drive device; 31, second rotation drive device; 32, pressing plate; 33, wire feeding tube; 34, wire feeding drive device; 35, copper wire drive wheel; 36, processing drive member; 151, first limiting block; 152, second limiting block; 221, first mounting bracket; 222, first wire drawing block; 223, molybdenum wire drive assembly; 224, first alignment drive device; 225, first changing wheel; 271, second mounting bracket; 272, second wire drawing block; 273, copper wire drive assembly; 274, second alignment drive device; 275, second changing wheel. DETAILED DESCRIPTION

[0059] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0060] Example 1

[0061] See also Figure 1 The present invention provides a wire cutting machine, comprising:

[0062] The frame includes a base 1 placed on the ground and a bracket 2 fixed to the base 1 by screws, a wire winding slide rail arranged in a horizontal direction along the length direction is fixed on the base 1 by screws, a wire winding base 3 is slidably mounted on the wire winding slide rail, a wire winding support frame 4 is fixed on the wire winding base 3 by screws, a molybdenum wire winding drum 5 with an axial direction the same as the length direction of the wire winding slide rail is rotatably connected to the wire winding support frame 4 by a rotating shaft, and molybdenum wire is wound on the molybdenum wire winding drum 5; a first wire winding drive device for driving the molybdenum wire winding drum 5 to reciprocate is fixed on the wire winding support frame 4, in this embodiment, the first wire winding drive device is configured as a servo motor with a reducer, a screw mechanism for driving the wire winding base 3 to slide is arranged on the base 1, the screw is driven to rotate by the servo motor, and the screw sleeve and the wire winding base 3 are fixed by screws.

[0063] See also Figure 1 and Figure 2 , and also includes a first sliding frame 6 slidably assembled on the bracket 2 along the vertical direction, and the first sliding frame 6 is driven by a screw mechanism driven by a servo motor to slide along the vertical direction; a second sliding frame 8 is slidably assembled on the first sliding frame 6 along the x-axis direction, and the second sliding frame 8 is driven by the screw mechanism to slide back and forth; a third sliding frame 9 is slidably assembled on the second sliding frame 8 along the y-axis direction, and the third sliding frame 9 is driven by the screw mechanism to slide back and forth.

[0064] See also Figure 1 , also includes a part mounting frame 10, on which a plurality of mounting holes for installing tooling for fixing parts are opened, and a first adjustment component for adjusting the horizontal position of the part mounting frame 10 is arranged on the frame, and the first adjustment component includes: a first X-axis sliding frame 11 slidably mounted on the base 1 along the X-axis direction through a slide rail; a first X-axis driving device 12 for driving the first X-axis sliding frame 11 to slide, and in this embodiment, the first X-axis driving device 12 is configured as a screw mechanism driven by a servo motor; a first Y-axis sliding frame 13 slidably mounted on the first X-axis sliding frame 11 along the Y-axis direction through a slide rail, and the part mounting frame 10 is fixed to the first Y-axis sliding frame 13 by screws; and a first Y-axis driving device 14 for driving the first Y-axis sliding frame 13 to slide relative to the first X-axis sliding frame 11, and in this embodiment, the first Y-axis driving device 14 is configured as a screw mechanism driven by a servo motor.

[0065] See also Figure 1 and Figure 4 , and also includes a limiting component 15 for limiting the length direction of the electrode wire at the processing position, the limiting component 15 includes a first limiting block 151 and a second limiting block 152 that are separately arranged, the first limiting block 151 and the second limiting block 152 are distributed in the vertical direction and the first limiting block 151 is arranged above the second limiting block 152, the first limiting block 151 is fixed to the third sliding frame 9 by screws, and the second limiting block 152 is fixed to the bracket 2 by screws, the first limiting block 151 is provided with a first channel 16 for the electrode wire to pass through and a first limiting hole 17 that is connected to the first channel 16 and only allows the electrode wire to pass through, the length direction of the first channel 16 is arranged in the vertical direction and the first limiting hole 17 is located below the first channel 16, the second limiting block 152 is provided with a second channel 18 for the electrode wire to pass through and a second limiting hole 19 that is connected to the second channel 18 and only allows the electrode wire to pass through, the length direction of the second channel 18 is arranged in the vertical direction and the second limiting hole 19 is located above the second channel 18.

[0066] See also Figure 1, and also includes a copper wire winding drum 20 rotatably connected to the bracket 2, on which copper wire is wound, and a second wire winding driving device 21 is provided on the bracket 2 for driving the copper wire winding drum 20 to rotate back and forth to realize the retraction and release of the copper wire. In this embodiment, the second wire winding driving device 21 is configured as a servo motor, and the housing of the servo motor is fixed to the bracket 2 by screws, and the output shaft is fixed to the copper wire winding drum 20.

[0067] See also Figure 2 and Figure 3 , and also includes a molybdenum wire introduction module 22 for driving the molybdenum wire led out from the molybdenum wire winding drum 5 to move and introduce the molybdenum wire into the limiting component 15, and driving the molybdenum wire to retreat when the type of electrode wire is changed.

[0068] The molybdenum wire introduction module 22 includes: a first mounting frame 221, in this embodiment, the first mounting frame 221 is slidably mounted on the third sliding frame 9 along the x-axis direction; a first wire guide block 222 mounted on the first mounting frame 221, in this embodiment, the first wire guide block 222 is configured to be tubular, and the length direction of the first wire guide block 222 is arranged along the vertical direction, and a first wire guide channel for the molybdenum wire to pass through and limit the direction of the molybdenum wire so that the molybdenum wire enters the first channel 16 is opened on the first wire guide block 222, and the length direction of the first wire guide channel is also arranged along the vertical direction; A mounting frame 221, a molybdenum wire driving assembly 223 for driving the molybdenum wire to reciprocate; and a first alignment driving device 224 for driving the first mounting frame 221 to move so as to align the first wire guide channel with the first channel 16 when the copper wire is switched to the molybdenum wire, and to drive the first mounting frame 221 to move and make a yielding action when the type of electrode wire is changed. In this embodiment, the yielding action is that the first mounting frame 221 slides in the horizontal direction to disengage the first wire guide block 222 from the first limiting block 151. In this embodiment, the first alignment driving device 224 is configured as a screw mechanism driven by a servo motor.

[0069] See also Figure 3The molybdenum wire driving assembly 223 includes: at least one pair of first driving wheels 24. In this embodiment, a pair of first driving wheels 24 is provided. In other embodiments, multiple pairs may also be provided. Two sliders are slidably mounted on the first mounting frame 221 in the horizontal direction. The two first driving wheels 24 are rotatably connected to the two sliders respectively; a first clamping driving device 25 that drives the first driving wheel 24 to clamp the molybdenum wire. In this embodiment, the first clamping driving device 25 is configured as a servo motor. A pulley is fixed on the output shaft of the servo motor. Another pulley is rotatably connected to the first mounting frame 221 through a rotating shaft. Belts are installed on the two pulleys and the two pulleys divide the belts into two sections. The two sliders are respectively fixed to one section of the belt. ; and a first rotating drive device 26 that drives the first clamping wheel to rotate reciprocatingly to drive the molybdenum wire to move. In the present embodiment, the first rotating drive device 26 is configured as a servo motor mounted on a slider, and the output shaft of the servo motor is fixed to the first driving wheel 24. When driving the molybdenum wire to move, the first clamping drive device 25 drives the paired first driving wheels 24 to clamp the molybdenum wire, and then the first rotating drive device 26 drives the first driving wheel 24 to rotate, and utilizes the friction force between the molybdenum wire and the first driving wheel 24 to drive the molybdenum wire to move by the first driving wheel 24; in the present embodiment, when the type of electrode wire needs to be driven back to the molybdenum wire introduction module 22 to change, the first clamping drive device 25 drives the molybdenum wire back to the first wire lead-in channel.

[0070] See also Figure 2 The molybdenum wire introduction module 22 also includes at least one first changing wheel 225 for changing the direction of the molybdenum wire and allowing the molybdenum wire to enter the first wire guiding channel after being led out from the molybdenum wire winding drum 5. In this embodiment, the first changing wheel 225 is provided with one, which is rotatably connected to the first mounting frame 221 through a rotating shaft.

[0071] See also Figure 2 and Figure 3 , and also includes a copper wire introduction module 27 for driving the copper wire led out from the copper wire winding drum 20 to move and introduce the copper wire into the limiting component 15, and driving the copper wire to retreat when the type of electrode wire is changed.

[0072] The copper wire introduction module 27 includes: a second mounting frame 271, which is fixed to the bracket 2 by screws; a second wire guide block 272 installed on the second mounting frame 271 by screws. In this embodiment, the second wire guide block 272 is configured to be tubular, and a second wire guide channel is provided on the second wire guide block 272 for the copper wire to pass through and limit the direction of the copper wire so that the copper wire enters the first channel 16. The length direction of the second wire guide channel is arranged in the vertical direction; a copper wire driving component 273 mounted on the second mounting frame 271 for driving the copper wire to move back and forth; and a copper wire driving component 273 for driving the second mounting frame 271 and the limiting component 15 to move relative to each other so that the second wire guide channel can pass through the first channel 16 when the molybdenum wire is switched to the copper wire. The second alignment drive device 274 is aligned with the first channel 16. In the present embodiment, the second alignment drive device 274 is configured as a screw mechanism that drives the first sliding frame 6 to slide in the vertical direction, and adjusts the second wire drawing channel and the first channel 16 to be on the same vertical line. Then, the second alignment drive device 274 drives the third sliding frame 9 to slide to align the second wire drawing channel with the first channel 16, and drives the second mounting frame 271 to slide and make a giving way when changing the type of electrode wire. In the present embodiment, the giving way action is that the second alignment drive device 274 drives the first sliding frame 6 to move downward, and then drives the third sliding frame 9 to move downward, and the second wire drawing block 272 disengages from the first limiting block 151.

[0073] See also Figure 3 The copper wire driving assembly 273 includes: at least one pair of second driving wheels 29. In this embodiment, a pair of second driving wheels 29 is provided. In other embodiments, multiple pairs may be provided. Two sliders are slidably mounted on the second mounting frame 271 in the horizontal direction. The two second driving wheels 29 are rotatably connected to the two sliders respectively; a second clamping driving device 30 that drives the second driving wheel 29 to clamp the copper wire. In this embodiment, the second clamping driving device 30 is set as a servo motor. A pulley is fixed on the output shaft of the servo motor. Another pulley is rotatably connected to the second mounting frame 271 through a rotating shaft. Belts are installed on the two pulleys and the two pulleys divide the belts into two sections. The two sliders are fixed to one section of the belt respectively. ; and a second rotating drive device 31 that drives the second clamping wheel to rotate back and forth to drive the molybdenum wire to move. In the present embodiment, the second rotating drive device 31 is configured as a servo motor mounted on a slider, and the output shaft of the servo motor is fixed to the second driving wheel 29. When driving the copper wire to move, the second clamping drive device 30 drives the paired second driving wheels 29 to clamp the copper wire, and then the second rotating drive device 31 drives the second driving wheel 29 to rotate, and utilizes the friction force between the copper wire and the second driving wheel 29 to drive the molybdenum wire to move by the second driving wheel 29; in the present embodiment, when the type of electrode wire needs to be driven back to the copper wire introduction module 27, the second rotating drive device 31 drives the copper wire back to the second wire lead-in channel.

[0074] See also Figure 2 The copper wire introduction module 27 also includes at least one second changing wheel 275 for changing the direction of the copper wire so that the copper wire is led out from the copper wire winding drum 20 and enters the second wire leading channel. In this embodiment, the second changing wheel 275 is provided with one, which is rotatably connected to the second mounting frame 271 through a rotating shaft.

[0075] See also Figure 1 , also includes a pressing piece 32 fixed on the molybdenum wire winding drum 5 by screws, a wire feeding tube 33 is slidably mounted on the bracket 2 in the horizontal direction, and a wire feeding drive device 34 for driving the wire feeding tube 33 to slide back and forth is arranged on the bracket 2. In this embodiment, the wire feeding drive device 34 is arranged as a screw mechanism driven by a servo motor, and the wire feeding tube 33 squeezes the pressing piece 32 on the sliding path to open the pressing piece 32, and a wire feeding channel for the electrode wire to pass through is provided in the conveying pipe. The electrode wire enters the wire feeding channel after passing through the limiting component 15, and reaches the pressing piece 32 and the molybdenum wire winding drum 5 after passing through the wire feeding channel and is clamped and fixed, so that the head and tail ends of the molybdenum wire are fixed to the molybdenum wire winding drum 5, and the workpiece is cut by the reciprocating movement of the molybdenum wire, and when the molybdenum wire is replaced with copper wire, the wire feeding tube 33 is driven to squeeze the pressing piece 32 to open the pressing piece 32 again, and the molybdenum wire introduction module 22 drives the molybdenum wire to retreat.

[0076] See also Figure 1 and Figure 2 , and also includes at least one pair of copper wire driving wheels 35, which clamp the copper wire. In this embodiment, the copper wire driving wheels 35 are provided with a pair of copper wire driving wheels 35, which are rotatably connected to the frame through a rotating shaft. A processing driving member 36 for driving the copper wire driving wheels 35 to rotate to pull the copper wire is also installed on the frame. In this embodiment, the processing driving member 36 is set as a motor.

[0077] It also includes a waste collection area for collecting used and cut copper wire waste. In this embodiment, the waste collection area is arranged outside the equipment.

[0078] See also Figure 1 , and also includes a cutting device, which cuts the copper wire when the copper wire is replaced with a molybdenum wire. The cut copper wire part is returned to the copper wire introduction module 27, and the other part enters the waste collection area. In this embodiment, the cutting device is configured as an external power supply device. A power supply block is respectively installed on the first limiting block 151 and the second limiting block 152. The power supply block is electrically connected to the external power supply device. When the electrode wire is cutting, the external power supply device supplies power to the electrode wire. When the copper wire needs to be replaced with a molybdenum wire, the external power supply device inputs a large current to the power supply block to burn out the copper wire between the two power supply blocks.

[0079] According to the present invention, if the copper wire is replaced with molybdenum wire, the cutting device cuts the copper wire; if the molybdenum wire is switched to copper wire, the wire feeding drive device 34 drives the wire feeding tube 33 to move so that the wire feeding tube 33 squeezes the pressing plate 32 to open the pressing plate 32; if the copper wire is replaced with molybdenum wire, part of the copper wire returns to the copper wire introduction module 27, and the remaining copper wire enters the waste collection area as waste; if the molybdenum wire is switched to copper wire, the molybdenum wire returns to the molybdenum wire introduction module 22; if the copper wire is replaced with molybdenum wire, the molybdenum wire introduction module 22 introduces the molybdenum wire into the limiting component 15, and the molybdenum wire passes through the limiting component 15 and the wire feeding tube 33, and is pressed and fixed on the molybdenum wire winding drum 5 by the pressing plate 32; if the molybdenum wire is switched to copper wire, the copper wire introduction module 27 introduces the copper wire into the limiting component 15, and the copper wire passes through the limiting component 15 and the copper wire driving wheel 35 and enters the waste collection area, thereby realizing the cutting of the molybdenum wire.

[0080] Example 2

[0081] This embodiment provides a wire cutting machine wire changing method, using the wire cutting machine provided in embodiment 1, refer to Figure 8 , wire changing includes the following steps:

[0082] 1) The steps to replace molybdenum wire with copper wire are:

[0083] S1. When the molybdenum wire is replaced with the copper wire, the wire feeding drive device 34 drives the wire feeding tube 33 to move so that the wire feeding tube 33 squeezes the pressing sheet 32 ​​to open the pressing sheet 32;

[0084] S2, the molybdenum wire is retracted into the molybdenum wire introduction module 22;

[0085] S3, the copper wire introduction module 27 introduces the copper wire into the limiting component 15, and the copper wire passes through the limiting component 15 and the copper wire driving wheel 35 and then enters the waste collection area.

[0086] 2) Please refer to Fig. 9 , the steps to replace copper wire with molybdenum wire are:

[0087] S1. When the copper wire is replaced with a molybdenum wire, the cutting device cuts off the copper wire;

[0088] S2, part of the copper wires are returned to the copper wire introduction module 27, and the other part of the copper wires are collected in the waste collection area, and the copper wire introduction module 27 is separated from the limiting component 15;

[0089] S3, the molybdenum wire introduction module 22 drives the molybdenum wire into the limiting component 15 and passes through the limiting component 15, and then the molybdenum wire enters the wire feeding channel opened in the wire feeding tube 33;

[0090] S4, the wire feeding drive device 34 drives the wire feeding tube 33 to move, so that the wire feeding tube 33 squeezes the pressing sheet 32 ​​to separate the pressing sheet 32 ​​from the molybdenum wire winding drum 5, and then the molybdenum wire continues to move to between the pressing sheet 32 ​​and the molybdenum wire winding drum 5;

[0091] S5, the wire feeding drive device 34 drives the wire feeding tube 33 to retreat, and the pressing sheet 32 ​​squeezes and fixes the molybdenum wire on the molybdenum wire winding drum 5.

[0092] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A double wire system of a wire cutting machine, characterized in that: include: A limiting component (15) for limiting the length direction of the electrode wire at the processing position; A molybdenum wire winding drum (5) containing molybdenum wire; A molybdenum wire introduction module (22) is used to drive the molybdenum wire led out from the molybdenum wire winding drum (5) to move and introduce the molybdenum wire into the limiting assembly (15), and to drive the molybdenum wire to retreat to the molybdenum wire introduction module (22) when changing the type of electrode wire; a copper wire winding drum (20) containing copper wire; and The copper wire introduction module (27) is used to drive the copper wire led out from the copper wire winding drum (20) to move and introduce the copper wire into the limiting component (15), and to drive the copper wire back to the copper wire introduction module (27) when changing the type of electrode wire. The molybdenum wire introduction module (22) and the copper wire introduction module (27) are alternately matched with the limiting component (15).

2. The double wire system of the wire cutting machine according to claim 1, characterized in that: The limiting assembly (15) comprises a first limiting block (151) and a second limiting block (152) which are separately arranged, the first limiting block (151) being provided with a first channel (16) for the electrode wire to pass through and a first limiting hole (17) which is connected to the first channel (16) and only allows the electrode wire to pass through, and the second limiting block (152) being provided with a second channel (18) for the electrode wire to pass through and a second limiting hole (19) which is connected to the second channel (18) and only allows the electrode wire to pass through.

3. The double wire system of the wire cutting machine according to claim 2, characterized in that: The molybdenum wire introduction module (22) comprises: A first mounting frame (221); a first wire guide block (222) mounted on the first mounting frame (221), wherein a first wire guide channel is provided through the first wire guide block (222) for allowing the molybdenum wire to pass through and limiting the direction of the molybdenum wire so that the molybdenum wire enters the first channel (16); a molybdenum wire driving assembly (223) mounted on the first mounting frame (221) and used for driving the molybdenum wire to move back and forth; and a first alignment driving device (224) for driving the first mounting frame (221) to move so as to align the first wire guide channel with the first channel (16) when the molybdenum wire is introduced into the limiting assembly (15), and driving the first mounting frame (221) to move and make way when the type of electrode wire is changed.

4. The double wire system of the wire cutting machine according to claim 3, characterized in that: The molybdenum wire drive assembly (223) comprises: At least one pair of first driving wheels (24); a first clamping driving device (25) driving the first driving wheels (24) to clamp the molybdenum wire; and a first rotating driving device (26) driving the first clamping wheels to reciprocate to drive the molybdenum wire to move.

5. The double wire system of the wire cutting machine according to claim 3, characterized in that: The molybdenum wire introduction module (22) also includes at least one first direction-changing wheel (225) for changing the direction of the molybdenum wire so that the molybdenum wire is led out of the molybdenum wire winding drum (5) and then enters the first wire-leading channel.

6. The double wire system of the wire cutting machine according to claim 2, characterized in that: The copper wire introduction module (27) comprises: A second mounting frame (271); a second wire guide block (272) mounted on the second mounting frame (271), wherein a second wire guide channel is provided through the second wire guide block (272) for allowing the copper wire to pass through and limiting the direction of the copper wire so that the copper wire enters the first channel (16); a copper wire driving assembly (273) mounted on the second mounting frame (271) and used for driving the copper wire to move back and forth; and a second alignment driving device (274) for driving the second mounting frame (271) and the limiting assembly (15) to move relative to each other so that the second wire guide channel is aligned with the first channel (16) when the copper wire is introduced into the limiting assembly (15), and driving the second mounting frame (271) to slide and make way when the type of electrode wire is changed.

7. The double wire system of the wire cutting machine according to claim 6, characterized in that: The copper wire drive assembly (273) comprises: At least one pair of second driving wheels (29); a second clamping driving device (30) driving the second driving wheels (29) to clamp the copper wire; and a second rotating driving device (31) driving the second clamping wheels to reciprocate to drive the copper wire to move.

8. The double wire system of the wire cutting machine according to claim 6, characterized in that: The copper wire introduction module (27) further comprises at least one second direction-changing wheel (275) for changing the direction of the copper wire so that the copper wire is led out of the copper wire winding drum (20) and then enters the second wire-leading channel.

9. A wire cutting machine, characterized in that: A double-wire system comprising a wire cutting machine according to any one of claims 1 to 8, further comprising: A pressing sheet (32) is pressed and arranged on the molybdenum wire winding drum (5); A wire conveying pipe (33), wherein a wire conveying channel for the electrode wire to pass through is arranged in the conveying pipe, and the electrode wire enters the wire conveying channel after passing through the limiting component (15); A wire feeding drive device (34) drives the wire feeding tube (33) to move so that the wire feeding tube (33) squeezes the pressing plate (32) to open the pressing plate (32), and the molybdenum wire enters between the pressing plate (32) and the molybdenum wire winding drum (5) to be squeezed and fixed, thereby fixing the head and tail ends of the molybdenum wire to the molybdenum wire winding drum (5), and when the molybdenum wire is replaced with copper wire, the wire feeding tube (33) is driven to squeeze the pressing plate (32) to open the pressing plate (32) again, and the molybdenum wire introduction module (22) drives the molybdenum wire to retreat; At least one pair of copper wire driving wheels (35), the copper wire driving wheels (35) clamping the copper wire; A processing driving member (36) drives the copper wire driving wheel (35) to rotate so as to pull the copper wire to move when the copper wire is used for processing; A scrap collection area where the copper wire is stored as scrap after processing; and, The cutting device cuts the copper wire when the copper wire is replaced with the molybdenum wire, and part of the cut copper wire returns to the copper wire introduction module (27) and the other part enters the waste collection area.

10. A wire changing method for a wire cutting machine, characterized in that: Using the wire cutting machine as claimed in claim 9 comprises the following steps: S1. If the copper wire is replaced with a molybdenum wire, the cutting device cuts the copper wire; if the molybdenum wire is switched to a copper wire, the wire feeding drive device (34) drives the wire feeding pipe (33) to move so that the wire feeding pipe (33) presses the pressing sheet (32) to open the pressing sheet (32); S2. If the copper wire is replaced with a molybdenum wire, part of the copper wire is returned to the copper wire introduction module (27), and the remaining copper wire enters the waste collection area as waste; if the molybdenum wire is switched to a copper wire, the molybdenum wire is returned to the molybdenum wire introduction module (22); S3. If the copper wire is replaced with molybdenum wire, the molybdenum wire introduction module (22) introduces the molybdenum wire into the limiting component (15). After the molybdenum wire passes through the limiting component (15), it passes through the wire conveying tube (33) and is pressed and fixed on the molybdenum wire winding drum (5) by the pressing plate (32); if the molybdenum wire is switched to copper wire, the copper wire introduction module (27) introduces the copper wire into the limiting component (15). After the copper wire passes through the limiting component (15) and the copper wire driving wheel (35), it enters the waste collection area.

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