A wire cutting molybdenum wire cutting section adjustment component

Abstract

The present invention belongs to the technical field of wire cutting mechanisms, and discloses a wire cutting molybdenum wire cutting section adjusting assembly, which includes a mounting plate vertically fixed on a wire cutting machine table, an upper bracket horizontally arranged at the upper part of the front side of the mounting plate, a lower bracket horizontally fixed at the lower part of the front side of the mounting plate, two groups of main guide wheels symmetrically rotating in the upper bracket and the lower bracket, a driving mechanism arranged at the rear part of the mounting plate for driving the upper bracket to move up and down, and a molybdenum wire arranged on the two groups of main guide wheels and connected to a wire cutting machine reel for cutting a workpiece during movement. The present invention improves the stability of the cutting section of the molybdenum wire for cutting the workpiece, the adjustment efficiency of the tightness of the cutting section of the molybdenum wire, and the service life of the molybdenum wire through the driving mechanism, the molybdenum wire and the tensioning mechanism, and avoids the problem that the tightness of the cutting section of the molybdenum wire cannot be adjusted synchronously when the cutting section of the molybdenum wire is adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of wire cutting mechanisms, and specifically relates to a wire cutting molybdenum wire cutting section adjustment component. Background Art

[0002] At present, wire electrical discharge machining (WEDM) machines at home and abroad already account for more than 60% of the total number of electrical discharge machining machines. For wire electrical discharge machining, also known as wire cutting, its basic working principle mostly uses a continuously moving molybdenum wire (referred to as the electrode wire) as the electrode to perform pulsed spark discharge on the workpiece to erode metal and cut into shape. It is mainly used for machining various workpieces with complex shapes and precision and small size, and has outstanding advantages such as small machining allowance, high machining accuracy, short production cycle, and low manufacturing cost. When the molybdenum wire cutting section for cutting the workpiece is in use, usually in order to improve the stability during cutting, it is necessary to adjust the length of the molybdenum wire cutting section according to the thickness of the workpiece through an adjustment component.

[0003] After retrieval, a Chinese patent discloses a wire cutting molybdenum wire cutting section adjustment device (publication number: CN109732160A). Although in actual use of this patented technology, when the workpiece is moved to the cutting section of the molybdenum wire, the distance detection mechanism will detect the distance between the limit guide wheel and the workpiece and transmit the data to the controller. The controller will then control the lifting drive mechanism to start, and the lifting drive mechanism will drive the lifting rod to move until the working length of the cutting section of the molybdenum wire restricted by the limiting member is the same as the working length of the cutting section of the molybdenum wire located below the workpiece, and then the lifting drive mechanism can be stopped. In this way, it can ensure that the working lengths of the cutting sections of the molybdenum wire above and below the workpiece are the same, the force on the cutting section of the molybdenum wire is uniform, which can improve the service life, and ensure that the current spark distribution acting on the molybdenum wire is uniform, which can improve the cutting accuracy of the workpiece and reduce the surface roughness. However, when using this patented technology, when the limiting member moves downward to limit the length of the cutting section of the molybdenum wire, the length of the molybdenum wire between the limiting member and the upper bracket of the wire cutting machine increases. When the molybdenum wire moves continuously, it is easy to generate jitter, which easily affects the stability of the cutting section of the molybdenum wire, reduces the stability of the cutting workpiece, and at the same time, the friction between the molybdenum wire jitter and the guide wheel increases the molybdenum wire loss and reduces the service life of the molybdenum wire.

[0004] Upon retrieval, a Chinese patent discloses a wire-cut molybdenum wire cutting section adjustment assembly (Publication No.: CN218135528U). Although in actual use of this patented technology, by setting the adjustment assembly, the molybdenum wire can be wound inside multiple support frames on the upper and lower sides. When facing workpieces of different sizes, by rotating the drive ring, through the threaded movement of the drive ring and the bidirectional screw, the drive ring can drive the movable plate to slide on the surface of the bidirectional screw, and the positions of the two support frames can be adjusted to adjust the distance between the two support frames and thus adjust the cutting section. However, when using this patented technology, when adjusting the cutting section by adjusting the distance between the two support frames, it is impossible to synchronously adjust the tightness of the molybdenum wire cutting section. It is also necessary to drive two reels to rotate to unwind the molybdenum wire, thereby adjusting the tightness of the molybdenum wire cutting section, which reduces the efficiency of adjusting the molybdenum wire cutting section. Therefore, it needs to be improved. Summary of the Invention

[0005] To solve the problems raised in the above background technology, the present invention provides a wire-cut molybdenum wire cutting section adjustment assembly, which has the advantages of convenient operation, high stability of the cut workpiece, good cutting effect, and extended service life of the molybdenum wire. Through the cooperative design of structures such as a driving mechanism, a molybdenum wire, and a tensioning mechanism, the stability of the cutting section of the molybdenum wire for cutting the workpiece is improved, the efficiency of adjusting the tightness of the cutting section of the molybdenum wire is enhanced, and at the same time, the service life of the molybdenum wire is improved.

[0006] To achieve the above object, the present invention provides the following technical solution: A wire-cut molybdenum wire cutting section adjustment assembly includes a mounting plate vertically fixed on the wire cutting machine tabletop, an upper support horizontally arranged at the upper front side of the mounting plate, a lower support horizontally fixed at the lower front side of the mounting plate, two groups of main guide wheels symmetrically rotating in the upper support and the lower support, a driving mechanism arranged at the rear of the mounting plate for driving the upper support to move up and down, a molybdenum wire arranged on the two groups of main guide wheels and connected to the wire cutting machine reel for cutting the workpiece during movement, and a tensioning mechanism arranged below the upper support for adjusting the tightness of the molybdenum wire;

[0007] The tensioning mechanism includes an outer frame fixedly installed on the bottom surface of the upper support, a mounting shell horizontally moving in the outer frame, two limiting guide wheels symmetrically rotating on the upper and lower sides of the inner cavity of the mounting shell, a grinding mechanism arranged in the mounting shell between the two limiting guide wheels for removing the oxide film on the surface of the molybdenum wire, an adjusting mechanism arranged at the front part of the mounting plate and on the outer surface of the mounting shell, and a secondary guide wheel rotationally installed at the bottom of the outer frame through a rotating shaft for the movement of the molybdenum wire; wherein, the molybdenum wire passes through the inner cavity of the mounting shell, and the molybdenum wire is movably connected to the limiting guide wheels. When the adjusting mechanism operates, it drives the grinding mechanism to move.

[0008] In the above technical solution, preferably, the adjusting mechanism includes a limiting rod hinged to the upper part of the front side of the mounting plate, a limiting plate fixed to the middle of the front side of the mounting plate, a connecting rod fixedly installed on the outer surface of the mounting shell and movably connected to the inner cavity of the limiting rod, and a positioning mechanism arranged between the bottom end of the limiting rod and the bottom surface of the limiting plate for restricting the limiting rod.

[0009] In the above technical solution, preferably, the positioning mechanism includes a set of positioning grooves opened on the bottom surface of the limiting plate, a connecting block fixedly installed at the bottom end of the limiting rod, an extension block vertically slidably installed on the top surface of the connecting block, a positioning rod vertically slid on the top surface of the extension block and movably connected to the inner cavity of the positioning groove, and a threaded rod threadedly installed on the bottom surface of the connecting block. Wherein, the top end of the threaded rod is rotatably connected to the bottom surface of the extension block.

[0010] In the above technical solution, preferably, a compression spring is sleeved on the outer surface of the positioning rod, and the two ends of the compression spring are respectively fixedly connected to the upper part of the positioning rod and the top surface of the extension block.

[0011] In the above technical solution, preferably, the driving mechanism includes a servo motor fixed to the upper part of the rear side of the mounting plate, a driving screw vertically rotatably installed at the rear part of the mounting plate and fixedly connected to the output shaft end of the servo motor, and a connecting frame vertically moving at the rear part of the mounting plate and fixedly connected to the side wall of the upper bracket; wherein, the driving screw is threadedly connected to the connecting frame.

[0012] In the above technical solution, preferably, the grinding mechanism includes two connecting plates symmetrically sliding in the mounting shell, two sponge blocks respectively fixedly installed on the opposite surfaces of the two connecting plates, two sandpapers respectively fixed on the opposite surfaces of the two sponge blocks for removing the oxide layer on the surface of the molybdenum wire, and a transmission mechanism arranged in the mounting shell for driving the two connecting plates to approach or move away from each other.

[0013] In the above technical solution, preferably, the transmission mechanism includes two sliding rods symmetrically fixed in the mounting shell, two sliders symmetrically moving on the sliding rods, a support rod for connecting the slider and the connecting plate, a bidirectional lead screw for driving the two sliders to approach or move away from each other, and a linkage mechanism arranged in the outer frame for driving the bidirectional lead screw to rotate; wherein, the two ends of the support rod are respectively hinged to the top surface of the slider and the side wall of the connecting plate, and the two ends of the bidirectional lead screw are respectively rotatably connected to the inner cavity of the mounting shell through bearings.

[0014] In the above technical solution, preferably, the linkage mechanism includes two slide rails symmetrically and horizontally fixedly installed in the outer frame for the movement of the installation shell, a docking gear fixedly sleeved on the front end of the bidirectional lead screw, a rack fixedly installed on the right side of the top surface of one of the slide rails and movably connected to the docking gear, two sprockets fixedly sleeved on the front parts of the two bidirectional lead screws, and a chain movably sleeved on the two sprockets.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. Through the cooperative design of structures such as the driving mechanism, molybdenum wire, and tensioning mechanism, before cutting the workpiece, when the upper bracket is at the initial position at the highest point, the operator can manually drive the installation shell through the adjustment mechanism to drive the limit guide wheel to press against the molybdenum wire and move in the direction away from the cutting section of the molybdenum wire to tighten the molybdenum wire. When the driving mechanism drives the upper bracket to move to adjust the length of the cutting section of the molybdenum wire, the installation shell can automatically drive the limit guide wheel to press against the molybdenum wire and move in the direction away from the cutting section of the molybdenum wire again to tighten the cutting section of the molybdenum wire, which can avoid the jitter generated when the molybdenum wire moves continuously, improve the stability of the cutting section of the molybdenum wire for cutting the workpiece, improve the efficiency of adjusting the tightness of the cutting section of the molybdenum wire, and at the same time improve the service life of the molybdenum wire. It solves the problems in the prior art that when adjusting the cutting section of the molybdenum wire, the tightness of the cutting section of the molybdenum wire cannot be adjusted synchronously, the adjustment efficiency of the cutting section of the molybdenum wire is low, the molybdenum wire is prone to jitter when moving continuously, which easily affects the stability of the cutting section of the molybdenum wire, reduces the stability of cutting the workpiece, and at the same time the friction between the jitter of the molybdenum wire and the guide wheel increases the molybdenum wire loss and reduces the service life of the molybdenum wire.

[0017] 2. Through the cooperative design of structures such as the adjustment mechanism and the abrasion mechanism, the operator can also manually drive the installation shell to move in the direction close to the cutting section of the molybdenum wire through the adjustment mechanism. When the installation shell moves close to the position of the cutting section of the molybdenum wire, the two connecting plates can be driven to approach each other through the transmission mechanism. Thus, the connecting plate drives the sponge block to approach, and then drives the opposite surfaces of the two sandpapers to contact and fit with the surface of the molybdenum wire. By starting the reel of the wire cutting machine to drive the molybdenum wire to move continuously, the sandpaper can grind off the oxide layer on the surface of the molybdenum wire, improve the discharge stability of the cutting section of the molybdenum wire, have a good effect on removing the oxide layer, and further improve the cutting effect on the workpiece. It solves the problems in the prior art that after the newly produced molybdenum wire stored for a long time is oxidized, an oxide layer is formed on the surface, and the discharge is unstable during use, which affects the cutting effect on the workpiece. It is necessary to start the machine to drive the molybdenum wire to rotate idly before cutting the workpiece to grind off the oxide layer on the surface of the molybdenum wire, resulting in a poor effect on removing the oxide layer and being prone to omissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 Structural schematic diagrams of the mounting plate, upper bracket, lower bracket, main guide wheel, and tensioning mechanism of the present invention;

[0020] Figure 3 is Figure 2 An enlarged schematic diagram of part A shown;

[0021] Figure 4 Structural schematic diagrams of the mounting plate and driving mechanism of the present invention;

[0022] Figure 5 Structural schematic diagrams of the limit rod, limit plate, connecting rod, mounting shell, and positioning mechanism of the present invention;

[0023] Figure 6 is Figure 5 An enlarged schematic diagram of part B shown;

[0024] Figure 7 Partial cross-sectional structural schematic diagram of the grinding mechanism of the present invention;

[0025] Figure 8 Structural schematic diagram of the present invention for grinding and removing the oxide layer on the surface of the molybdenum wire;

[0026] Figure 9 Structural schematic diagram of the grinding mechanism of the present invention when grinding the molybdenum wire.

[0027] In the figure: 1, mounting plate; 2, upper bracket; 3, lower bracket; 4, main guide wheel; 5, driving mechanism; 51, servo motor; 52, driving screw; 53, connecting frame; 6, molybdenum wire; 7, tensioning mechanism; 71, outer frame; 72, mounting shell; 73, limit guide wheel; 74, grinding mechanism; 741, connecting plate; 742, sponge block; 743, sandpaper; 744, transmission mechanism; 7441, slide bar; 7442, slider; 7443, support rod; 7444, bidirectional lead screw; 7445, linkage mechanism; 75, adjustment mechanism; 751, limit rod; 752, limit plate; 753, connecting rod; 754, positioning mechanism; 7541, positioning groove; 7542, connecting block; 7543, extension block; 7544, positioning rod; 7545, threaded rod; 76, secondary guide wheel; 8, compression spring; 9, slide rail; 10, docking gear; 11, rack; 12, sprocket; 13, chain. Embodiment

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] As shown Figures 1 to 9 in the figure, the present invention provides a wire cutting molybdenum wire cutting section adjusting assembly, which includes a mounting plate 1 vertically fixed on the wire cutting machine table, an upper bracket 2 horizontally arranged on the upper part of the front side of the mounting plate 1, a lower bracket 3 horizontally fixed on the lower part of the front side of the mounting plate 1, two groups of main guide wheels 4 symmetrically rotated in the upper bracket 2 and the lower bracket 3, a driving mechanism 5 arranged at the rear part of the mounting plate 1 for driving the upper bracket 2 to move up and down, a molybdenum wire 6 arranged on the two groups of main guide wheels 4 and connected to the wire cutting machine reel for cutting the workpiece during movement, and a tensioning mechanism 7 arranged below the upper bracket 2 for adjusting the tension of the molybdenum wire 6;

[0030] During use, the driving mechanism 5 can drive the upper bracket 2 to move up and down, so as to adjust the distance between the upper bracket 2 and the lower bracket 3, and further limit the length of the cutting section of the molybdenum wire 6 for cutting the workpiece between the upper bracket 2 and the lower bracket 3. The tensioning mechanism 7 can automatically adjust the tension of the cutting section of the molybdenum wire 6 when adjusting the length of the cutting section of the molybdenum wire 6, improving the efficiency of adjusting the tension of the cutting section of the molybdenum wire 6.

[0031] The tensioning mechanism 7 includes an outer frame 71 fixedly installed on the bottom surface of the upper bracket 2, a mounting shell 72 horizontally moving in the outer frame 71, two limiting guide wheels 73 symmetrically rotated on the upper and lower sides of the inner cavity of the mounting shell 72, a grinding mechanism 74 arranged in the mounting shell 72 between the two limiting guide wheels 73 for removing the oxide film on the surface of the molybdenum wire 6, an adjusting mechanism 75 arranged on the front part of the mounting plate 1 and the outer surface of the mounting shell 72, and a secondary guide wheel 76 rotatably installed at the bottom of the outer frame 71 through a rotating shaft for the movement of the molybdenum wire 6; wherein, the molybdenum wire 6 passes through the inner cavity of the mounting shell 72, and the molybdenum wire 6 is movably connected to the limiting guide wheels 73. When the adjusting mechanism 75 operates, it drives the grinding mechanism 74 to move.

[0032] During use, before cutting the workpiece, when the upper bracket 2 is at the initial position at the highest point, the operator can manually drive the mounting shell 72 through the adjusting mechanism 75 to drive the limiting guide wheels 73 to press against the molybdenum wire 6 and move away from the cutting section of the molybdenum wire 6 to tighten the molybdenum wire 6. When the driving mechanism 5 drives the upper bracket 2 to move to adjust the length of the cutting section of the molybdenum wire 6, the mounting shell 72 can automatically drive the limiting guide wheels 73 to press against the molybdenum wire 6 again and move away from the cutting section of the molybdenum wire 6 to tighten the cutting section of the molybdenum wire 6, which can avoid the molybdenum wire 6 from jittering during continuous movement, improve the stability of the cutting section of the molybdenum wire 6 for cutting the workpiece, and at the same time improve the service life of the molybdenum wire 6.

[0033] It should be noted that the operator can also manually drive the mounting shell 72 to move towards the cutting section of the molybdenum wire 6 through the adjusting mechanism 75. When the mounting shell 72 moves close to the cutting section position of the molybdenum wire 6, it can drive the grinding mechanism 74 to operate and contact the molybdenum wire 6. Then, by starting the reel of the wire cutting machine to drive the molybdenum wire 6 to move continuously, the oxide layer on the surface of the molybdenum wire 6 is removed under the action of the grinding mechanism 74, improving the discharge stability of the cutting section of the molybdenum wire 6, with good effect of removing the oxide layer, further improving the cutting effect on the workpiece, and avoiding the formation of an oxide layer on the surface of the newly stored molybdenum wire 6 after being oxidized, which may cause unstable discharge during use and affect the cutting effect on the workpiece. Before cutting the workpiece, it is necessary to start the machine to drive the molybdenum wire 6 to rotate idly to grind off the oxide layer on the surface of the molybdenum wire 6, resulting in poor effect of removing the oxide layer and easy omission problems.

[0034] As Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 8 shown, the adjusting mechanism 75 includes a limiting rod 751 hinged to the upper part of the front side of the mounting plate 1, a limiting plate 752 fixed to the middle of the front side of the mounting plate 1, a connecting rod 753 fixedly installed on the outer surface of the mounting shell 72 and movably connected to the inner cavity of the limiting rod 751, and a positioning mechanism 754 provided at the bottom end of the limiting rod 751 and the bottom surface of the limiting plate 752 for restricting the limiting rod 751.

[0035] During use, first, the operator can manually adjust the rotation angle of the limiting rod 751 and fix the limiting rod 751 through the positioning mechanism 754. When the limiting rod 751 moves, it can drive the mounting shell 72 to move through the connecting rod 753. The mounting shell 72 moves the molybdenum wire 6 by abutting against it through the limiting guide wheel 73, facilitating fine adjustment of the tightness of the molybdenum wire 6. Second, the grinding mechanism 74 can also be operated to fit the surface of the molybdenum wire 6 by adjusting the rotation angle of the limiting rod 751, facilitating the removal of the oxide layer on the surface of the molybdenum wire 6.

[0036] It should be noted that when the driving mechanism 5 drives the upper support 2 to move up and down to adjust the length of the cutting section of the molybdenum wire 6, the upper support 2 drives the mounting shell 72 to move through the outer frame 71. At the same time, the mounting shell 72 drives the connecting rod 753 to move. When the connecting rod 753 moves along the inner cavity of the limiting rod 751, the mounting shell 72 can move left and right while moving up and down, facilitating synchronous automatic adjustment of its tightness according to the length of the cutting section of the molybdenum wire 6.

[0037] As Figure 5 and Figure 6As shown, the positioning mechanism 754 includes a set of positioning grooves 7541 formed on the bottom surface of the limiting plate 752, a connecting block 7542 fixedly installed at the bottom end of the limiting rod 751, an extension block 7543 vertically slidably installed on the top surface of the connecting block 7542, a positioning rod 7544 vertically slid on the top surface of the extension block 7543 and movably connected to the inner cavity of the positioning groove 7541, and a threaded rod 7545 threadedly installed on the bottom surface of the connecting block 7542. Among them, the top end of the threaded rod 7545 is rotatably connected to the bottom surface of the extension block 7543.

[0038] During use, after the angle of the limiting rod 751 is adjusted, by turning the threaded rod 7545, the extension block 7543 is driven to move upward, so that the extension block 7543 can drive the positioning rod 7544 to abut against the inner cavity of the positioning groove 7541, facilitating the quick fixation of the limiting rod 751.

[0039] As Figure 6 shown, a compression spring 8 is sleeved on the outer surface of the positioning rod 7544, and both ends of the compression spring 8 are fixedly connected to the upper part of the positioning rod 7544 and the top surface of the extension block 7543 respectively.

[0040] During use, when adjusting the angle of the limiting rod 751, the elastic force of the compression spring 8 can drive the positioning rod 7544 to contact the inner cavity of the positioning groove 7541. After conveniently adjusting the angle of the limiting rod 751, turning the threaded rod 7545 can quickly make the positioning rod 7544 fit and abut against the inner cavity of the positioning groove 7541 to fix the limiting rod 751.

[0041] As Figure 4 shown, the driving mechanism 5 includes a servo motor 51 fixed to the upper part of the rear side of the mounting plate 1, a driving screw rod 52 vertically rotatably installed at the rear part of the mounting plate 1 and fixedly connected to the output shaft end of the servo motor 51, and a connecting frame 53 moving up and down at the rear part of the mounting plate 1 and fixedly connected to the side wall of the upper support 2; among them, the driving screw rod 52 is threadedly connected to the connecting frame 53.

[0042] During use, start the servo motor 51 to drive the driving screw rod 52 to rotate. The driving screw rod 52 can drive the connecting frame 53 to drive the upper support 2 to move, facilitating the adjustment of the length of the cutting section of the molybdenum wire 6 by moving the height position of the upper support 2. At the same time, the mounting shell 72 can be driven to move through the adjusting mechanism 75, so that the mounting shell 72 drives the limiting guide wheel 73 to drive the molybdenum wire 6 to move and can synchronously adjust the tightness of the cutting section of the molybdenum wire 6.

[0043] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 、 Figure 8 and Figure 9As shown in the figure, the abrasion mechanism 74 includes two connecting plates 741 that slide symmetrically within the installation shell 72, two sponge blocks 742 fixedly installed on the opposite surfaces of the two connecting plates 741 respectively, two abrasive papers 743 fixedly attached to the opposite surfaces of the two sponge blocks 742 for removing the oxide layer on the surface of the molybdenum wire 6, and a transmission mechanism 744 disposed within the installation shell 72 for driving the two connecting plates 741 to approach or move away from each other.

[0044] During use, the operator manually drives the installation shell 72 to move towards the cutting section of the molybdenum wire 6 through the adjustment mechanism 75. When the installation shell 72 moves close to the cutting section position of the molybdenum wire 6, the transmission mechanism 744 can drive the two connecting plates 741 to approach each other. As a result, the connecting plates 741 drive the sponge blocks 742 to approach, and further drive the opposite surfaces of the two abrasive papers 743 to contact and fit with the surface of the molybdenum wire 6. By starting the reel of the wire cutting machine to drive the molybdenum wire 6 to move continuously, the abrasive paper 743 can grind off the oxide layer on the surface of the molybdenum wire 6, improving the stability of the discharge of the cutting section of the molybdenum wire 6, having a good effect on removing the oxide layer, and further enhancing the cutting effect on the workpiece.

[0045] As Figure 7 and Figure 9 shown in the figure, the transmission mechanism 744 includes two sliding rods 7441 symmetrically fixed within the installation shell 72, two sliders 7442 that move symmetrically on the sliding rods 7441, support rods 7443 for connecting the sliders 7442 to the connecting plates 741, a bidirectional lead screw 7444 for driving the two sliders 7442 to approach or move away from each other, and a linkage mechanism 7445 disposed within the outer frame 71 for driving the bidirectional lead screw 7444 to rotate; wherein, the two ends of the support rod 7443 are respectively hinged to the top surface of the slider 7442 and the side wall of the connecting plate 741, and the two ends of the bidirectional lead screw 7444 are respectively rotationally connected to the inner cavity of the installation shell 72 through bearings.

[0046] During use, the linkage mechanism 7445 operates to drive the bidirectional lead screw 7444 to rotate. When the bidirectional lead screw 7444 rotates, it drives the two sliders 7442 to move. When the two sliders 7442 move, they drive the connecting plates 741 to move through the support rods 7443, enabling the connecting plates 741 to drive the abrasive papers 743 to contact and fit with the surface of the molybdenum wire 6.

[0047] As Figure 2 , Figure 3 , Figure 8 and Figure 9As shown, the linkage mechanism 7445 includes two slide rails 9 symmetrically and horizontally fixedly installed inside the outer frame 71 for the movement of the mounting shell 72, a docking gear 10 fixedly sleeved on the front end of the bidirectional lead screw 7444, a rack 11 fixedly installed on the right side of the top surface of one slide rail 9 and movably connected to the docking gear 10, two sprockets 12 fixedly sleeved on the front parts of the two bidirectional lead screws 7444, and a chain 13 movably sleeved on the two sprockets 12.

[0048] During use, the operator manually drives the mounting shell 72 to move towards the cutting section close to the molybdenum wire 6 through the adjusting mechanism 75. When the mounting shell 72 moves close to the cutting section position of the molybdenum wire 6, the docking gear 10 contacts and meshes with the rack 11. Thus, while the docking gear 10 moves on the rack 11, it rotates. Furthermore, when the docking gear 10 rotates, it drives one bidirectional lead screw 7444 to rotate. Through the action of the chain 13 and the two sprockets 12, the two bidirectional lead screws 7444 can be synchronously rotated, and finally, the two abrasive papers 743 are driven to contact and fit with the surface of the molybdenum wire 6.

[0049] The working principle and usage process of the present invention:

[0050] In use, first, the operator can manually adjust the rotation angle of the limit rod 751. After the angle of the limit rod 751 is adjusted, the extension block 7543 is driven to move upward by screwing the threaded rod 7545, so that the extension block 7543 can drive the positioning rod 7544 to abut against the inner cavity of the positioning groove 7541, quickly fixing the limit rod 751. When the limit rod 751 moves, it can drive the mounting shell 72 to move through the connecting rod 753. The mounting shell 72 moves the molybdenum wire 6 by abutting against the limit guide wheel 73, and can finely adjust the tightness of the molybdenum wire 6. When the servo motor 51 is started to drive the driving screw 52 to rotate, the driving screw 52 can drive the connecting frame 53 to drive the upper bracket 2 to move, facilitating the adjustment of the length of the cutting section of the molybdenum wire 6 by moving the height position of the upper bracket 2. At the same time, the mounting shell 72 can be driven to move through the linkage of the adjustment mechanism 75, so that the mounting shell 72 drives the limit guide wheel 73 to drive the molybdenum wire 6 to move and can synchronously adjust the tightness of the cutting section of the molybdenum wire 6. Second, the operator manually drives the mounting shell 72 to move towards the cutting section of the molybdenum wire 6 through the adjustment mechanism 75. When the mounting shell 72 moves close to the cutting section position of the molybdenum wire 6, the docking gear 10 contacts and meshes with the rack 11. Thus, when the docking gear 10 moves on the rack 11, it rotates, and when the docking gear 10 rotates, it drives a bidirectional lead screw 7444 to rotate. Through the action of the chain 13 and the two sprockets 12, the two bidirectional lead screws 7444 can be rotated synchronously. When the bidirectional lead screw 7444 rotates, it drives the two sliders 7442 to move. When the two sliders 7442 move, they drive the connecting plate 741 to move through the support rod 7443. Thus, the connecting plate 741 drives the sponge block 742 to approach, and then drives the opposite surfaces of the two sandpapers 743 to contact and fit with the surface of the molybdenum wire 6. By starting the reel of the wire cutting machine to drive the molybdenum wire 6 to move continuously, the sandpaper 743 can grind off the oxide layer on the surface of the molybdenum wire 6, improving the stability of the discharge of the cutting section of the molybdenum wire 6, having a good effect on removing the oxide layer, and further improving the cutting effect on the workpiece.

[0051] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire cutting molybdenum wire cutting section adjusting assembly, characterized in that It includes a mounting plate (1) vertically fixed on the table of a wire cutting machine, an upper bracket (2) horizontally arranged at the upper front side of the mounting plate (1), a lower bracket (3) horizontally fixed at the lower front side of the mounting plate (1), two groups of main guide wheels (4) symmetrically rotating in the upper bracket (2) and the lower bracket (3), a driving mechanism (5) arranged at the rear of the mounting plate (1) for driving the upper bracket (2) to move up and down, a molybdenum wire (6) arranged on the two groups of main guide wheels (4) and connected to the reel of the wire cutting machine for cutting the workpiece during movement, and a tensioning mechanism (7) arranged below the upper bracket (2) for adjusting the tension of the molybdenum wire (6); The tensioning mechanism (7) includes an outer frame (71) fixedly installed on the bottom surface of the upper bracket (2), a mounting shell (72) horizontally moving in the outer frame (71), two limiting guide wheels (73) symmetrically rotating on the upper and lower sides of the inner cavity of the mounting shell (72), a grinding mechanism (74) arranged in the mounting shell (72) between the two limiting guide wheels (73) for removing the oxide film on the surface of the molybdenum wire (6), an adjusting mechanism (75) arranged at the front part of the mounting plate (1) and the outer surface of the mounting shell (72), and a secondary guide wheel (76) rotatably installed at the bottom of the outer frame (71) for the movement of the molybdenum wire (6); wherein, the molybdenum wire (6) passes through the inner cavity of the mounting shell (72), and the molybdenum wire (6) is movably connected to the limiting guide wheels (73). When the adjusting mechanism (75) operates, it drives the grinding mechanism (74) to move.

2. The wire cutting molybdenum wire cutting section adjusting assembly according to claim 1, wherein: The adjusting mechanism (75) includes a limiting rod (751) hinged to the upper front side of the mounting plate (1), a limiting plate (752) fixed to the middle of the front side of the mounting plate (1), a connecting rod (753) fixedly installed on the outer surface of the mounting shell (72) and movably connected to the inner cavity of the limiting rod (751), and a positioning mechanism (754) arranged at the bottom end of the limiting rod (751) and the bottom surface of the limiting plate (752) for restricting the limiting rod (751).

3. The wire cutting molybdenum wire cutting section adjusting assembly according to claim 2, characterized in that: The positioning mechanism (754) includes a group of positioning grooves (7541) opened on the bottom surface of the limiting plate (752), a connecting block (7542) fixedly installed at the bottom end of the limiting rod (751), an extension block (7543) vertically slidably installed on the top surface of the connecting block (7542), a positioning rod (7544) vertically slid on the top surface of the extension block (7543) and movably connected to the inner cavity of the positioning groove (7541), and a threaded rod (7545) threadedly installed on the bottom surface of the connecting block (7542), wherein the top end of the threaded rod (7545) is rotatably connected to the bottom surface of the extension block (7543).

4. A wire cutting molybdenum wire cutting section adjusting assembly according to claim 3, characterized in that: A compression spring (8) is sleeved on the outer surface of the positioning rod (7544), and the two ends of the compression spring (8) are respectively fixedly connected to the upper part of the positioning rod (7544) and the top surface of the extension block (7543).

5. The wire cutting molybdenum wire cutting section adjusting assembly according to claim 1, characterized in that: The driving mechanism (5) includes a servo motor (51) fixed to the upper part of the rear side of the mounting plate (1), a driving screw rod (52) vertically rotating at the rear part of the mounting plate (1) and fixedly connected to the output shaft end of the servo motor (51), and a connecting frame (53) moving up and down at the rear part of the mounting plate (1) and fixedly connected to the side wall of the upper bracket (2); wherein, the driving screw rod (52) is threadedly connected to the connecting frame (53).

6. The wire cutting molybdenum wire cutting section adjusting assembly according to claim 1, wherein: The grinding mechanism (74) includes two connecting plates (741) symmetrically sliding in the mounting shell (72), two sponge blocks (742) respectively fixedly installed on the opposite surfaces of the two connecting plates (741), two sandpapers (743) respectively fixed on the opposite surfaces of the two sponge blocks (742) for removing the oxide layer on the surface of the molybdenum wire (6), and a transmission mechanism (744) arranged in the mounting shell (72) for driving the two connecting plates (741) to approach or separate from each other.

7. The wire cutting molybdenum wire cutting section adjusting assembly according to claim 6, characterized in that: The transmission mechanism (744) includes two slide rods (7441) symmetrically fixed in the mounting shell (72), two sliders (7442) symmetrically moving on the slide rods (7441), a support rod (7443) for connecting the slider (7442) and the connecting plate (741), a bidirectional lead screw (7444) for driving the two sliders (7442) to approach or separate from each other, and a linkage mechanism (7445) arranged in the outer frame (71) for driving the bidirectional lead screw (7444) to rotate; wherein, the two ends of the support rod (7443) are respectively hinged to the top surface of the slider (7442) and the side wall of the connecting plate (741), and the two ends of the bidirectional lead screw (7444) are respectively rotationally connected to the inner cavity of the mounting shell (72) through bearings.

8. A wire cutting molybdenum wire cutting section adjusting assembly according to claim 7, characterized in that: The linkage mechanism (7445) includes two slide rails (9) symmetrically and horizontally fixedly installed in the outer frame (71) for the movement of the mounting shell (72), a docking gear (10) fixedly sleeved on the front end of the bidirectional lead screw (7444), a rack (11) fixed on the right side of the top surface of one slide rail (9) and movably connected to the docking gear (10), two sprockets (12) fixedly sleeved on the front parts of the two bidirectional lead screws (7444), and a chain (13) movably sleeved on the two sprockets (12).

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