Molybdenum wire withdrawing device

Abstract

The invention relates to the technical field of molybdenum wire withdrawing, and discloses a molybdenum wire withdrawing device which comprises a first arc plate, a second arc plate and a rotary driving assembly, the axial direction of the first arc plate extends in the first direction, and the first arc plate is provided with an adjusting hole extending in the first direction; the axial direction of the second arc plate extends in the first direction, the second arc plate can be embedded in the adjusting hole to form a hollow roller with the first arc plate, the outer contour of the section, perpendicular to the first direction, of the hollow roller is circular, the second arc plate is connected with a moving assembly, and the moving assembly is connected with the first arc plate to drive the second arc plate to move in the radial direction of the hollow roller. A rolling shaft extending in the first direction is arranged on the hollow roller in a penetrating mode, and the rolling shaft and the hollow roller are coaxially arranged and fixedly connected to the first arc plate. The rotation driving assembly is connected with the rolling shaft to drive the rolling shaft to rotate. The invention provides a molybdenum wire withdrawing device which can withdraw a molybdenum wire from a roller more quickly in a labor-saving manner and effectively reduce potential safety hazards.

Description

Technical Field

[0001] This invention relates to the field of molybdenum wire unwinding technology, and in particular to a molybdenum wire unwinding device. Background Technology

[0002] Wire EDM machines typically wind molybdenum wire around the outer circumference of a drum to cut various irregularly shaped workpieces. However, prolonged use can cause severe wear and even breakage of the molybdenum wire, affecting the machining accuracy and surface roughness of the workpiece. Therefore, it is necessary to remove the severely worn or broken molybdenum wire from the drum.

[0003] Currently, the common method for removing molybdenum wire is to use a rotating drum and a hand-held wire-removing tool to clamp and pull the end of the molybdenum wire. However, because the molybdenum wire is tightly wound on the drum, the friction between the molybdenum wire and the drum, as well as between adjacent layers of molybdenum wire, is relatively large. Therefore, removing the wire is difficult and time-consuming. Pulling the molybdenum wire forcefully can also easily cut the hand, posing a significant safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide a molybdenum wire unwinding device that can unwind molybdenum wire from the drum more quickly and effortlessly, and effectively reduce safety hazards.

[0005] To achieve the above objectives, the present invention provides a molybdenum wire unwinding device, comprising: A first arc plate, the first arc plate extending axially along a first direction, and the first arc plate having an adjustment hole extending along the first direction; The second arc plate extends axially along the first direction. The second arc plate can be embedded in the adjustment hole to form a hollow roller with the first arc plate. The outer contour of the hollow roller along the cross section perpendicular to the first direction is circular. The second arc plate is connected to a moving component. The moving component is connected to the first arc plate to drive the second arc plate to move radially along the hollow roller. The hollow roller is provided with a roller extending along the first direction. The roller is coaxially arranged with the hollow roller and fixedly connected to the first arc plate. A rotary drive assembly connected to the roller to drive the roller to rotate.

[0006] Preferably, the inner walls of the first arc plate and the second arc plate opposite to each other are provided with mounting holes extending radially therein. A first limiting member and a second limiting member are installed in the mounting holes. The second limiting member and the first limiting member are distributed at intervals along the radial direction of the first arc plate. The second limiting member and the first limiting member are respectively provided with coaxial operating holes. The movable component includes an adjusting bolt and a support member. The adjusting bolt passes through the operating hole of the second limiting member, and the head end of the adjusting bolt is located between the first limiting member and the second limiting member. The diameter of the head end of the adjusting bolt is larger than the diameter of the operating hole. The support member is located between the first arc plate and the second arc plate. The support member is connected to the second arc plate. The support member has a first threaded hole that extends along the extension direction of the adjusting bolt. The adjusting bolt passes through the first threaded hole.

[0007] Preferably, the support member has a guide hole extending in a first direction, the roller passes through the guide hole, the length of the guide hole along the extension direction of the adjusting bolt is greater than the diameter of the roller, the first threaded hole extends from the end of the support member away from the second arc plate to the guide hole, and the adjusting bolt passes through the first threaded hole and enters the guide hole.

[0008] Preferably, baffles are fixedly installed at both ends of the first arc plate in the first direction, the baffles are perpendicular to the first direction, and the two ends of the roller pass through the two baffles respectively and are fixedly connected to the baffles.

[0009] Preferably, the central angle of the first arc plate is greater than the central angle of the second arc plate.

[0010] Preferably, the two opposite sides of the adjustment hole are first inclined surfaces, and the two first inclined surfaces gradually approach each other in the radial outward direction along the first arc plate. The two sides of the second arc plate along its circumference are second inclined surfaces, and the first inclined surfaces and the second inclined surfaces are parallel to each other.

[0011] Preferably, it further includes: A fixing bolt extends radially along the first arc plate, passes through the first arc plate and is threadedly connected to the first arc plate, with the head end of the fixing bolt located outside the first arc plate.

[0012] Preferably, there are multiple fixing bolts, and the multiple fixing bolts are arranged sequentially along the first direction.

[0013] Preferably, it further includes: Two support seats are respectively located on both sides of the first arc plate and the second arc plate in the first direction. Each support seat includes a fastener and a base. One end of the fastener in the second direction is hinged to the base. The hinge axis of the fastener and the base extends along the first direction. A receiving space for accommodating the roller is formed between the fastener and the base. The second direction, the first direction, and the radial direction of the first arc plate intersect each other perpendicularly.

[0014] Preferably, a transmission gear is sleeved on the outer periphery of one end of the roller; The rotary drive assembly includes a motor and a drive gear. The drive gear is sleeved on the outer periphery of the output shaft of the motor, and the drive gear and the transmission gear are meshed together.

[0015] Compared with the prior art, the molybdenum wire unwinding device of this invention has the following advantages: The control moving component drives the second arc plate to be embedded in the adjustment hole, so that the second arc plate and the first arc plate can form a hollow roller with a circular outer contour. The rotation drive component is activated to drive the roller to rotate, which in turn drives the fixedly connected first arc plate to rotate. The first arc plate then drives the second arc plate, connected via the moving component, to rotate, thus allowing the hollow roller to rotate. Molybdenum wire is wound around the outer circumference of the hollow roller, and the rotation of the hollow roller allows the molybdenum wire to cut the workpiece.

[0016] When it is necessary to untangle severely worn or broken molybdenum wires, stop the rotation drive assembly and control the moving assembly to drive the second arc plate to move radially inward along the hollow roller, that is, to move closer to the roller shaft. The second arc plate disengages from the first arc plate, and a part of the molybdenum wire lacks the support of the second arc plate, thus loosening the molybdenum wire. At this time, untangling the molybdenum wire can be done more quickly and with less effort, without having to pull the molybdenum wire forcefully, effectively reducing safety hazards. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the molybdenum wire unwinding device according to an embodiment of the present invention; Figure 2 This is a perspective sectional view of the molybdenum wire unwinding device according to an embodiment of the present invention; Figure 3 This is a planar sectional view of the molybdenum wire unwinding device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the support base according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the molybdenum wire unwinding device according to an embodiment of the present invention; In the diagram, 1. First arc plate; 101. First inclined surface; 11. Mounting hole; 12. First limiting component; 13. Second limiting component; 14. Operating hole; 15. Adjustment hole; 2. Second arc plate; 201. Second inclined surface; 3. Moving component; 31. Adjusting bolt; 32. Support component; 321. First threaded hole; 322. Guide hole; 4. Roller; 41. Transmission gear; 5. Baffle; 6. Fixing bolt; 7. Support base; 71. Fastener; 72. Base; 73. Hinge shaft; 74. Accommodation space; 8. Rotary drive component; 81. Motor; 82. Drive gear; 9. Hollow roller; 10. Control cabinet. Detailed Implementation

[0018] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0019] In the description of this invention, it should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this invention based on the specific circumstances.

[0020] In the description of this invention, it should be understood that the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," "longitudinal," "X-axis direction," "Y-axis direction," and "Z-axis direction," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Moreover, some of the above terms, in addition to indicating orientations or positional relationships, may also be used to indicate other meanings; for example, the term "upper" may in some cases be used to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0021] like Figure 1-3 As shown in Figures 5 and 6, a molybdenum wire unwinding device according to an embodiment of the present invention includes: a first arc plate 1, a second arc plate 2, and a rotation drive assembly 8. The first arc plate 1 extends axially along the first direction X, and the first arc plate 1 is provided with an adjustment hole 15 extending along the first direction X. The second arc plate 2 extends axially along the first direction X. The second arc plate 2 can be embedded in the adjustment hole 15 and form a hollow roller 9 with the first arc plate 1. The outer contour of the hollow roller 9 along the cross section perpendicular to the first direction X is circular. The second arc plate 2 is connected to a moving component 3. The moving component 3 is connected to the first arc plate 1 to drive the second arc plate 2 to move radially along the hollow roller 9. The hollow roller 9 is provided with a roller 4 extending along the first direction X. The roller 4 is coaxially arranged with the hollow roller 9 and fixedly connected to the first arc plate 1. The rotary drive assembly 8 is connected to the roller 4 to drive the roller 4 to rotate.

[0022] It should be noted that the control moving component 3 drives the second arc plate 2 to be embedded in the adjusting hole 15, so that the second arc plate 2 and the first arc plate 1 can form a hollow roller 9 with a circular outer contour. The rotation driving component 8 is activated to drive the roller 4 to rotate, and the roller 4 drives the fixedly connected first arc plate 1 to rotate. The first arc plate 1 drives the second arc plate 2, connected through the moving component 3, to rotate, thus enabling the hollow roller 9 to rotate. Molybdenum wire is wound around the outer circumference of the hollow roller 9 to achieve wire winding, and the rotation of the hollow roller 9 allows the molybdenum wire to cut the workpiece.

[0023] When it is necessary to untangle a severely worn or broken molybdenum wire, stop the rotation drive assembly 8 and control the moving assembly 3 to drive the second arc plate 2 to move radially inward along the hollow roller 9, that is, to move closer to the roller 4. The second arc plate 2 disengages from the first arc plate 1, and a part of the molybdenum wire lacks the support of the second arc plate 2, thus loosening the molybdenum wire. At this time, untangling the molybdenum wire can be done more quickly and with less effort, without having to pull the molybdenum wire forcefully, effectively reducing safety hazards.

[0024] When rewinding is required, the control moving component 3 drives the second arc plate 2 to move outward along the radial direction of the hollow roller 9, that is, to move away from the roller 4, until the second arc plate 2 moves to the position embedded in the adjusting hole 15, that is, to form the position of the hollow roller 9, and then drives the hollow roller 9 to rotate.

[0025] like Figure 1-3 As shown, in this embodiment, the inner walls of the first arc plate 1 and the second arc plate 2 opposite each other are provided with mounting holes 11 extending radially therein. The mounting holes 11 are provided with a first limiting member 12 and a second limiting member 13. The second limiting member 13 and the first limiting member 12 are distributed in sequence at intervals along the radial direction of the first arc plate 1. The second limiting member 13 and the first limiting member 12 are respectively provided with coaxial operating holes 14. The moving component 3 includes an adjusting bolt 31 and a support member 32. The adjusting bolt 31 passes through the operating hole 14 of the second limiting member 13. The head end of the adjusting bolt 31 is located between the first limiting member 12 and the second limiting member 13. The diameter of the head end of the adjusting bolt 31 is larger than the diameter of the operating hole 14. The support member 32 is located between the first arc plate 1 and the second arc plate 2. The support member 32 is connected to the second arc plate 2. The support member 32 has a first threaded hole 321 that extends through the adjusting bolt 31 along the extension direction. The adjusting bolt 31 passes through the first threaded hole 321.

[0026] It should be noted that the head of the adjusting bolt 31 is located between the first limiting member 12 and the second limiting member 13. The diameter of the head of the adjusting bolt 31 is larger than the diameter of the operating hole 14, so the head of the adjusting bolt 31 is fixed between the first limiting member 12 and the second limiting member 13. When a screwdriver is inserted through the operating hole 14 of the first limiting member 12 and rotated, the adjusting bolt 31 will rotate in place without displacement.

[0027] Since the adjusting bolt 31 and the support member 32 are connected by a screw through the first threaded hole 321, the rotation of the adjusting bolt 31 will cause the support member 32 to move along the adjusting bolt 31, thereby causing the second arc plate 2 to move.

[0028] like Figure 1-3 As shown, in this embodiment, the support member 32 further has a guide hole 322 extending along the first direction X. The roller 4 passes through the guide hole 322. The length of the guide hole 322 along the extension direction of the adjusting bolt 31 is greater than the diameter of the roller 4. The first threaded hole 321 extends from the end of the support member 32 away from the second arc plate 2 to the guide hole 322. The adjusting bolt 31 passes through the first threaded hole 321 and enters the guide hole 322.

[0029] It should be noted that the support member 32 has a guide hole 322 extending along the first direction X. The length of the guide hole 322 along the extension direction of the adjusting bolt 31 is greater than the diameter of the roller 4. The roller 4 is passed through the guide hole 322, so that the movement of the support member 32 will not be blocked by the roller 4.

[0030] In another embodiment, the first arc plate 1 further has a second threaded hole extending radially therein on its inner wall opposite to the second arc plate 2; The movable component 3 includes an adjusting bolt 31 and a support member 32. The adjusting bolt 31 passes through the second threaded hole, and the support member 32 is located in the space enclosed by the first arc plate 1 and the second arc plate 2. The two ends of the support member 32 are respectively connected to the adjusting bolt 31 and the inner wall surface of the second arc plate 2.

[0031] It should be noted that the adjusting bolt 31 passes through the second threaded hole, driving the adjusting bolt 31 to rotate. This causes the adjusting bolt 31 to move radially outward within the second threaded hole along the first arc plate 1, driving the connected support member 32 to move synchronously, and consequently driving the second arc plate 2 to move radially inward along the hollow roller 9. By changing the number of rotations of the adjusting bolt 31, the distance the second arc plate 2 moves can be changed.

[0032] like Figure 2 As shown, in this embodiment, baffles 5 are fixedly installed at both ends of the first arc plate 1 in the first direction X. The baffles 5 are perpendicular to the first direction X. The two ends of the roller 4 pass through the two baffles 5 respectively and are fixedly connected to the baffles 5.

[0033] It should be noted that baffles 5 are installed at both ends of the first arc plate 1 in the first direction X. The baffles 5 are perpendicular to the first direction X. The two ends of the roller 4 pass through the two baffles 5 respectively and are fixedly connected to the baffles 5. The roller 4 can be stably located on the central axis of the hollow roller 9.

[0034] Furthermore, the baffle 5 can limit the distance that the second arc plate 2 moves radially inward along the hollow roller 9, that is, the distance it moves towards the roller 4, thus preventing the second arc plate 2 from moving excessively.

[0035] like Figure 1 As shown, in this embodiment, the central angle of the first arc plate 1 is further greater than the central angle of the second arc plate 2.

[0036] It should be noted that the central angle of the first arc plate 1 is larger than that of the second arc plate 2. When the second arc plate 2 moves closer to the roller 4, the molybdenum wire wrapped around the outer circumference of the hollow roller is detached from the support of the second arc plate 2, thus avoiding excessive loosening that could lead to further entanglement between the molybdenum wires.

[0037] like Figure 1 As shown, in this embodiment, the two opposite sides of the adjustment hole 15 are first inclined surfaces 101, and the two first inclined surfaces 101 gradually approach each other in the radial outward direction of the first arc plate 1. The two sides of the second arc plate 2 along its circumferential direction are second inclined surfaces 201, and the first inclined surfaces 101 and the second inclined surfaces 201 are parallel to each other.

[0038] It should be noted that the two first inclined surfaces 101 of the adjustment hole 15 gradually approach each other in the radial outward direction of the first arc plate 1. The first inclined surface 101 and the second inclined surface 201 of the second arc plate 2 are parallel to each other. Thus, when the second arc plate 2 moves to the point where the second inclined surface 201 contacts the first inclined surface 101, the first inclined surface 101 can limit the second arc plate 2 to prevent the second arc plate 2 from protruding from the first arc plate 1, so that the second arc plate 2 moves exactly to the position that matches the outer periphery of the first arc plate 1, that is, the position that forms the hollow roller 9.

[0039] like Figure 2 As shown, in this embodiment, a fixing bolt 6 is further included. The fixing bolt 6 extends radially along the first arc plate 1, passes through the first arc plate 1 and is threadedly connected to the first arc plate 1. The head end of the fixing bolt 6 is located on the outside of the first arc plate 1.

[0040] It should be noted that the fixing bolt 6, which extends radially along the first arc plate 1, passes through the first arc plate 1 and is threadedly connected to the first arc plate 1. The head end is located on the outside of the first arc plate 1, so that one end of the molybdenum wire can be wrapped and fixed to the fixing bolt 6. The fixing bolt 6 can be tightened so that the head end of the fixing bolt 6 cooperates with the outer circumferential surface of the first arc plate 1 to clamp the molybdenum wire, and then the wire can be wound, thereby improving the reliability of fixing one end of the molybdenum wire.

[0041] like Figure 2 As shown, in this embodiment, there are multiple fixing bolts 6, which are arranged sequentially along the first direction X.

[0042] It should be noted that by setting multiple fixing bolts 6 arranged sequentially along the first direction X, when the molybdenum wire wound on the first molybdenum wire unwinding device breaks and needs to be unwound and rewound to the second molybdenum wire unwinding device, the two molybdenum wire unwinding devices are arranged sequentially and parallel along the second direction. The broken end of the molybdenum wire is fixed to the fixing bolt 6 of the second molybdenum wire unwinding device. By setting multiple fixing bolts 6 arranged sequentially along the first direction X, the nearest fixing bolt 6 can be selected for fixing, which can transfer the molybdenum wire more smoothly.

[0043] like Figure 1 , 4 As shown in Figure 5, in this embodiment, it further includes two support seats 7, which are located on both sides of the first arc plate 1 and the second arc plate 2 in the first direction X. The support seat 7 includes a fastener 71 and a base 72. One end of the fastener 71 in the second direction Y is hinged to the base 72. The hinge axis 73 of the fastener 71 and the base 72 extends along the first direction X. A receiving space 74 for accommodating the roller 4 is formed between the fastener 71 and the base 72. Among them, the second direction Y, the first direction X, and the radial directions of the first arc plate 1 intersect each other perpendicularly.

[0044] It should be noted that the two support seats 7 are located on both sides of the first arc plate 1 and the second arc plate 2 in the first direction X. The two ends of the roller 4 are respectively placed into the receiving space 74 of the two support seats 7 for support. When it is necessary to remove the hollow roller from the support seat 7, the buckle 71 is flipped so that the roller 4 can be taken out from the receiving space 74.

[0045] like Figure 5 As shown, in this embodiment, a transmission gear 41 is further sleeved on the outer periphery of one end of the roller 4; The rotary drive assembly 8 includes a motor 81 and a drive gear 82. The drive gear 82 is sleeved on the outer periphery of the output shaft of the motor 81, and the drive gear 82 and the transmission gear 41 are meshed together.

[0046] It should be noted that the drive motor 81 causes its output shaft to rotate, which in turn drives the drive gear 82 to rotate. The drive gear 82 then drives the meshing transmission gear 41 to rotate, which in turn drives the roller 4 to rotate. The direction of rotation of the roller 4 can be changed by changing the direction of rotation of the output shaft of the motor 81.

[0047] like Figure 1 , 5 As shown, in this embodiment, it further includes a control cabinet 10, on which the first arc plate 1, the second arc plate 2, the rotary drive assembly 8 and the two support bases 7 are all located. The control cabinet 10 and the rotary drive assembly 8 are electrically connected and used to start, stop and rotate the rotary drive assembly 8.

[0048] Before starting the winding process, the hollow roller needs to idle for 1-2 minutes. Then, one end of the molybdenum wire is fixed to the fixing bolt 6. The rotation drive assembly 8 is then started to drive the hollow roller to rotate. The forward and reverse rotation of the hollow roller can achieve winding of the molybdenum wire in two rotation directions or winding in one rotation direction and unwinding in the other. When the rotation drive assembly 8 is stopped, the control moving assembly 3 drives the second arc plate 2 to move radially inward along the hollow roller 9. The second arc plate 2 disengages from the first arc plate 1. Without the support of the second arc plate 2, the molybdenum wire is loosened, and the molybdenum wire can be unwound and removed more quickly and effortlessly.

[0049] The working process of this invention is as follows: the control moving component 3 drives the second arc plate 2 to be embedded in the adjusting hole 15, so that the second arc plate 2 and the first arc plate 1 can form a hollow roller 9 with a circular outer contour. The rotation driving component 8 is started to drive the roller 4 to rotate. The roller 4 drives the fixedly connected first arc plate 1 to rotate. The first arc plate 1 drives the second arc plate 2 connected through the moving component 3 to rotate, so that the hollow roller 9 can rotate. Molybdenum wire is wound around the outer circumference of the hollow roller to achieve wire winding, and the rotation of the hollow roller allows the molybdenum wire to cut the workpiece.

[0050] When it is necessary to untangle a severely worn or broken molybdenum wire, stop the rotation drive assembly 8 and control the moving assembly 3 to drive the second arc plate 2 to move radially inward along the hollow roller 9, that is, to move closer to the roller 4. The second arc plate 2 disengages from the first arc plate 1, and a part of the molybdenum wire lacks the support of the second arc plate 2, thus loosening the molybdenum wire. At this time, untangling the molybdenum wire can be done more quickly and with less effort, without having to pull the molybdenum wire forcefully, effectively reducing safety hazards.

[0051] In summary, the embodiments of the present invention provide a molybdenum wire unwinding device that can unwind molybdenum wire from the drum more quickly and effortlessly, and effectively reduce safety hazards.

[0052] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A molybdenum wire unwinding device, characterized in that, include: A first arc plate, the first arc plate extending axially along a first direction, and the first arc plate having an adjustment hole extending along the first direction; The second arc plate extends axially along the first direction. The second arc plate can be embedded in the adjustment hole to form a hollow roller with the first arc plate. The outer contour of the hollow roller along the cross section perpendicular to the first direction is circular. The second arc plate is connected to a moving component. The moving component is connected to the first arc plate to drive the second arc plate to move radially along the hollow roller. The hollow roller is provided with a roller extending along the first direction. The roller is coaxially arranged with the hollow roller and fixedly connected to the first arc plate. A rotary drive assembly connected to the roller to drive the roller to rotate.

2. The molybdenum wire unwinding device according to claim 1, characterized in that, The inner walls of the first arc plate and the second arc plate opposite each other are provided with mounting holes extending radially therein. A first limiting member and a second limiting member are installed in the mounting holes. The second limiting member and the first limiting member are distributed at intervals along the radial direction of the first arc plate. The second limiting member and the first limiting member are respectively provided with coaxial operating holes. The movable component includes an adjusting bolt and a support member. The adjusting bolt passes through the operating hole of the second limiting member, and the head end of the adjusting bolt is located between the first limiting member and the second limiting member. The diameter of the head end of the adjusting bolt is larger than the diameter of the operating hole. The support member is located between the first arc plate and the second arc plate. The support member is connected to the second arc plate. The support member has a first threaded hole that extends along the extension direction of the adjusting bolt. The adjusting bolt passes through the first threaded hole.

3. The molybdenum wire unwinding device according to claim 2, characterized in that, The support member has a guide hole extending in a first direction. The roller passes through the guide hole. The length of the guide hole along the extension direction of the adjusting bolt is greater than the diameter of the roller. The first threaded hole extends from the end of the support member away from the second arc plate to the guide hole. The adjusting bolt passes through the first threaded hole and enters the guide hole.

4. The molybdenum wire unwinding device according to claim 1, characterized in that, The first arc plate has baffles fixedly installed at both ends in the first direction. The baffles are perpendicular to the first direction. The two ends of the roller pass through the two baffles respectively and are fixedly connected to the baffles.

5. The molybdenum wire unwinding device according to claim 1, characterized in that, The central angle of the first arc plate is greater than the central angle of the second arc plate.

6. The molybdenum wire unwinding device according to claim 5, characterized in that, The two opposite sides of the adjustment hole are first inclined surfaces, and the two first inclined surfaces gradually approach each other in the radial outward direction along the first arc plate. The two sides of the second arc plate along its circumference are second inclined surfaces, and the first inclined surfaces and the second inclined surfaces are parallel to each other.

7. The molybdenum wire unwinding device according to claim 1, characterized in that, Also includes: A fixing bolt extends radially along the first arc plate, passes through the first arc plate and is threadedly connected to the first arc plate, with the head end of the fixing bolt located outside the first arc plate.

8. The molybdenum wire unwinding device according to claim 7, characterized in that, The fixing bolts are provided in multiple quantities, and the multiple fixing bolts are arranged sequentially along the first direction.

9. The molybdenum wire unwinding device according to claim 1, characterized in that, Also includes: Two support seats are respectively located on both sides of the first arc plate and the second arc plate in the first direction. Each support seat includes a fastener and a base. One end of the fastener in the second direction is hinged to the base. The hinge axis of the fastener and the base extends along the first direction. A receiving space for accommodating the roller is formed between the fastener and the base. The second direction, the first direction, and the radial direction of the first arc plate intersect each other perpendicularly.

10. The molybdenum wire unwinding device according to claim 1, characterized in that, A transmission gear is fitted around one end of the roller. The rotary drive assembly includes a motor and a drive gear. The drive gear is sleeved on the outer periphery of the output shaft of the motor, and the drive gear and the transmission gear are meshed together.

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