Pay-off device for precious metal wires and using method of pay-off device

Abstract

The invention belongs to the technical field of pay-off devices, and discloses a pay-off device for precious metal wires and a using method of the pay-off device for the precious metal wires. The pay-off rack is connected to the containing disc and used for conducting guided pay-off on the precious metal wires. The friction force adjusting assembly is connected to the placing disc and used for extruding the pay-off rack; the guide wheel is connected to the pay-off rack, and a precious metal wire is arranged in the middle of the guide wheel; the self-adaptive tension adjusting structure comprises a gas pushing structure, a rotating shaft, a friction roller and a friction force adjusting structure. The extrusion force on the guide wheel is dynamically adjusted through the airflow speed, so that the rotating speed of the guide wheel is accurately adjusted and controlled, the pay-off speed of the precious metal wire is stably controlled, the problem that the tension of the wire is unstable due to uneven pay-off speed is effectively solved, it is ensured that the tension of the precious metal wire is always kept within a proper range in the pay-off process, and the pay-off efficiency is improved. And the pay-off quality is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of wire pay-off devices, and particularly relates to a wire pay-off device for precious metal wire and its usage method. Background Art

[0002] Precious metal wire is an alloy or elemental material mainly composed of rare metals such as platinum, rhodium, palladium, and iridium. With its characteristics of high temperature resistance, oxidation resistance, and corrosion resistance, it is widely used in industrial temperature measurement, scientific research experiments, and special fields. In the unwinding process of precious metal wire, an automatic wire pay-off device is a key equipment. However, the precious metal wire itself has uneven diameter, uneven material, etc. When these wires are paid off, the resistance will fluctuate continuously. For example, at the locally thicker part of the wire, the pay-off resistance is large and the pay-off speed slows down accordingly; while at the thinner part, the pay-off resistance is small and the speed will increase. In addition, mechanical failures of the automatic wire pay-off device will also cause inconsistent pay-off speeds, and these situations will have an adverse impact on subsequent processing. Summary of the Invention

[0003] Aiming at the problem that the automatic wire pay-off device in the prior art will cause inconsistent pay-off speeds due to mechanical problems and material problems during use, thereby affecting subsequent processing, the present invention proposes the following technical solutions: A wire pay-off device for precious metal wire, comprising: A placement disk for coiling and placing precious metal wire; A pay-off rack connected to the placement disk for guiding the pay-off of precious metal wire; A friction force adjustment component connected to the placement disk for squeezing the pay-off rack; A guide wheel connected to the pay-off rack, with the precious metal wire arranged in the middle of the guide wheel; An adaptive tension adjustment structure, including a gas pushing structure, a rotating shaft, a friction roller, and a friction force adjustment structure; the gas pushing structure is connected to the pay-off rack, the gas pushing structure drives the rotating shaft to move and makes the friction roller connected to the outside of the rotating shaft fit with the guide wheel, and a friction force adjustment structure is connected to the outside of the friction roller, and the friction force adjustment structure drives the friction roller to move horizontally on the outside of the rotating shaft to increase the contact surface between the friction roller and the guide wheel.

[0004] As a preference of the above technical solution, a fixing component is installed between the pay-off rack and the guide wheel, and the fixing component includes: A mounting rack connected to the pay-off rack, and the guide wheel is connected to the pay-off rack through the mounting rack.

[0005] As a preference of the above technical solution, the gas pushing structure includes: A guide frame connected to the outside of the mounting rack; The fan blade is connected to the guiding frame, and the guiding frame and the fan blade cooperate to drive the gas to move.

[0006] As a preference of the above technical solution, the gas pushing structure further includes: The installation pipe is connected to the guiding frame; The drainage pipe is connected to the installation pipe; The metal pipe is connected to the drainage pipe; The piston rod is connected to the metal pipe, and the installation pipe, the drainage pipe and the metal pipe drive the piston rod to move; The side plate is connected to the piston rod and is used to drive the rotating shaft to move.

[0007] As a preference of the above technical solution, the friction force adjusting structure includes: The air outlet pipe is connected to the installation pipe; The flow dividing plate is connected to the air outlet pipe; The fixed sleeve is connected to the flow dividing plate; The pushing pipe is connected to the fixed sleeve, and the fixed sleeve, the flow dividing plate and the air outlet pipe drive the pushing pipe to move.

[0008] As a preference of the above technical solution, the friction force adjusting structure further includes: The spring rod is connected to the flow dividing plate; The linkage plate is connected to the spring rod, and the spring rod drives the linkage plate to move.

[0009] As a preference of the above technical solution, the number of the friction force adjusting structures is set to two in total, and a discharge pipe is connected to the top end of the flow dividing plate.

[0010] As a preference of the above technical solution, the discharge pipe is vertically arranged between the discharge pipe and the ground, the top end of the discharge pipe is the air outlet end, and the air outlet end of the discharge pipe and the precious metal wire are vertically symmetrically arranged on the outside.

[0011] The present invention also provides a method for using a pay-off device for precious metal wire, including the following steps: Step 1: Component assembly: Install between the placing disc and the pay-off rack; Step 2: Component clamping: Adjust the friction force between the placing disc and the pay-off rack through the friction force assembly; Step 3: Threading: Intersperse the precious metal wire inside the placing disc along the outside of the guiding wheel of the pay-off rack and connect it to the subsequent device.

[0012] The beneficial effects of the present invention are: (1) Dynamically adjust the extrusion force on the guide wheel by the air flow velocity, thereby precisely regulating the rotation speed of the guide wheel, and further stably controlling the wire release speed of the precious metal wire. This effectively avoids the problem of unstable wire tension caused by uneven wire release speed, ensures that the tension of the precious metal wire during wire release is always maintained within an appropriate range, and improves the wire release quality. (2) It can timely carry away the heat generated by friction during the wire release of the precious metal wire, effectively reduce the temperature, prevent the change of material properties caused by overheating, and can also blow away impurities such as dust and debris attached to the surface of the precious metal wire, ensuring the cleanliness of the surface of the precious metal wire and providing good basic conditions for subsequent processing. (3) It can automatically adjust the extrusion degree on the guide wheel according to the difference between the air intake speed of the installation pipe and the exhaust speed of the vertical pipe, realizing adaptive adjustment. This adaptive mechanism can cope with the change of wire release resistance caused by factors such as uneven material and diameter of the precious metal wire during wire release, ensuring the stable operation of the device. Description of the Drawings

[0013] Figure 1 Shows the structural schematic diagram of a wire release device for a precious metal wire in Embodiment 1; Figure 2 Shows the front view of a wire release device for a precious metal wire in Embodiment 1; Figure 3 Shows the structural schematic diagram of the installation of the guide wheel in Embodiment 1; Figure 4 Shows the structural schematic diagram of the installation of the friction roller in Embodiment 1; Figure 5 Shows the structural schematic diagram of the installation of the spring rod in Embodiment 1.

[0014] In the figure: 1, placement tray; 2, wire release frame; 3, friction force adjustment component; 41, mounting frame; 42, guide wheel; 51, guide frame; 52, fan blade; 53, installation pipe; 54, drainage pipe; 55, metal pipe; 56, piston rod; 57, side plate; 58, rotating shaft; 59, friction roller; 61, air outlet pipe; 62, flow dividing plate; 63, fixed sleeve; 64, push pipe; 65, spring rod; 66, linkage plate; 67, discharge pipe; 71, rectangular sleeve; 72, V-shaped groove; 73, vertical pipe; 74, limiting rod; 75, threaded rod. Detailed Embodiment

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0016] Embodiment 1: An unwinding device for precious metal wire, comprising: a placing disc 1 for coiling and placing the precious metal wire; an unwinding frame 2 connected to the placing disc 1 for guiding and unwinding the precious metal wire; a friction force adjusting component 3 connected to the placing disc 1 for squeezing the unwinding frame 2; a guiding wheel 42 connected to the unwinding frame 2, the precious metal wire being disposed in the middle of the guiding wheel 42, and an adaptive tension adjusting structure, including a gas pushing structure, a rotating shaft 58, a friction roller 59 and a friction force adjusting structure; the gas pushing structure is connected to the unwinding frame 2, the gas pushing structure drives the rotating shaft 58 to move and makes the friction roller 59 connected to the outer side of the rotating shaft 58 fit with the guiding wheel 42, a friction force adjusting structure is connected to the outer side of the friction roller 59, and the friction force adjusting structure drives the friction roller 59 to move laterally on the outer side of the rotating shaft 58 to increase the contact surface between the friction roller 59 and the guiding wheel 42.

[0017] Since the precious metal wire fluctuates during the unwinding process inside the unwinding device, during the guiding process of the precious metal wire, an adaptive adjustment structure is provided outside the guiding wheel 42, and the clamping force on the guiding wheel 42 is adjusted by the rotation speed of the guiding wheel 42, so that the rotation speed of the guiding wheel 42 is adjusted, thereby indirectly achieving the purpose of adjusting the moving speed of the precious metal wire. Moreover, during the extrusion and fixation process, due to different rotation speeds, the contact surface and the extrusion force are different, further improving the purpose of adjusting the rotation speed of the guiding wheel 42, thereby controlling the tension of the precious metal wire. This helps to avoid problems such as breakage caused by excessive tension or winding and slack caused by too small tension during the unwinding process of the precious metal wire, improves the stability and uniformity of unwinding, and further improves the quality of subsequent processing of the precious metal wire.

[0018] During use, the precious metal wire is inserted along the outer side of the guiding wheel 42. At this time, when the precious metal wire moves along the outer side of the guiding wheel 42, it drives the gas pushing structure to operate. When the gas pushing structure operates, it drives the rotating shaft 58 to move. When the rotating shaft 58 moves, it drives the friction roller 59 to contact the guiding wheel 42. At the same time, under the action of the gas, the friction roller 59 is synchronously driven to move on the outer side of the rotating shaft 58, so as to adjust the contact range between the friction roller 59 and the guiding wheel 42. Finally, when pulling the precious metal wire, at this time, while the precious metal wire moves along the outer side of the guiding wheel 42, it drives the unwinding frame 2 to rotate inside the placing disc 1, thereby achieving the purpose of unwinding.

[0019] Specifically, a plurality of limiting rods 74 are arranged inside the placing disc 1. The limiting rods 74 are slidably connected to the inside of the placing disc 1. Nuts are threadedly connected to both the top and bottom ends of the limiting rods 74. A threaded rod 75 is threadedly connected between two adjacent limiting rods 74. The threaded rod 75 is rotatably connected to the inside of the placing disc 1. At this time, the position of the limiting rod 74 is adjusted under the action of the threaded rod 75. The precious metal wire is extruded by the adjusted limiting rod 74, so that the precious metal wire maintains a stable state inside the placing disc 1, preventing the precious metal wire from becoming loose. The wire reel 2 is rotatably installed in the middle of the top of the placing disc 1. The wire reel 2 is composed of a column, a mounting rod and a moving rod. The column is rotatably connected to the inside of the placing disc 1. The mounting rod is installed on the outside of the column through a connecting piece. The connecting piece is a structure in the prior art, and its shape and clamping method will not be elaborated here. The moving rod is slidably connected to the outside of the mounting rod. A screw rod is threadedly connected inside the moving rod. Guide wheels 42 are rotatably installed on the outside of the moving rod, the column and the mounting rod for guiding the precious metal wire. The friction force adjusting assembly 3 is movably installed on the top of the placing disc 1. The friction force adjusting assembly 3 includes a mounting piece, a bolt, a moving column and a friction strip. The mounting piece is installed on the top of the placing disc 1 through a screw. The bolt is threadedly installed inside the mounting piece. A moving column is fixedly installed at one end of the bolt. The same friction strip is installed inside two moving columns through screws. The friction strip is sleeved on the outside of the wire reel 2. At this time, the friction force between the wire reel 2 and the placing disc 1 is changed through the friction strip, so as to adjust the rotation speed of the wire reel 2.

[0020] As Figure 4 and Figure 5 shown, the friction force adjusting structure includes: an air outlet pipe 61, a flow dividing plate 62, a fixed sleeve 63, a push pipe 64, a spring rod 65, a linkage plate 66 and a discharge pipe 67. The air outlet pipe 61 is connected to the mounting pipe 53; the flow dividing plate 62 is connected to the air outlet pipe 61; the fixed sleeve 63 is connected to the flow dividing plate 62; the push pipe 64 is connected to the fixed sleeve 63, and the fixed sleeve 63, the flow dividing plate 62 and the air outlet pipe 61 drive the push pipe 64 to move; the spring rod 65 is connected to the flow dividing plate 62; the linkage plate 66 is connected to the spring rod 65, and the spring rod 65 drives the linkage plate 66 to move; the number of the friction force adjusting structures is set to two in total. Among them, the number of the air outlet pipe 61, the flow dividing plate 62, the fixed sleeve 63, the push pipe 64, the spring rod 65 and the linkage plate 66 is set to two, and the number of the discharge pipes 67 is set to one in total. The top of the flow dividing plate 62 is connected to the discharge pipe 67; the discharge pipe 67 is vertically arranged with the ground. The top end of the discharge pipe 67 is the air outlet end, and the air outlet end of the discharge pipe 67 is vertically symmetrically arranged with the precious metal wire on the outside.

[0021] Since it is necessary to use gas to drive the movement of the friction roller 59, the gas needs to be guided during the flowing process at this time, so that the gas moves along the set route, and the gas flowing along the predetermined route drives the friction roller 59 to move, increasing the contact area between the friction roller 59 and the guide wheel 42, thereby increasing the extrusion force on the guide wheel 42, increasing the frictional resistance of the guide wheel 42, and further enhancing the speed regulation effect of the guide wheel 42.

[0022] Specifically, the gas flowing inside the air outlet pipe 61 enters the inside of the flow dividing plate 62. At this time, the gas inside the flow dividing plate 62 increases. When the gas increases, the gas enters the inside of the fixed sleeve 63 and blows and pushes the push pipe 64, causing the push pipe 64 to move due to the increase in air pressure. When the push pipe 64 moves, it drives the linkage plate 66 to move. When the linkage plate 66 moves, it drives the spring rod 65 to stretch. During this process, part of the gas is discharged along the discharge pipe 67. Since the caliber of the discharge pipe 67 cannot be adjusted, when the caliber of the discharge pipe 67 remains unchanged, the gas flow rate (the volume of gas per unit time) entering the discharge pipe 67 increases (here, because the pressure in the air outlet pipe 61 increases, more gas enters the discharge pipe 67). According to the flow formula Q = vS (Q is the flow rate, v is the flow velocity, S is the cross-sectional area, and here S is the area determined by the caliber of the discharge pipe 67 and remains unchanged), when the flow rate Q increases, the flow velocity v must increase. At this time, when the gas pressure inside the air outlet pipe 61 increases, the pushing distance of the push pipe 64 increases, and part of the gas still discharges along the inside of the discharge pipe 67.

[0023] Specifically, the air outlet pipe 61 is fixedly installed at the top of the installation pipe 53. A vertical pipe 73 is integrally formed at the top of the installation pipe 53. The air outlet pipe 61 is connected to the installation pipe 53 through the vertical pipe 73. The vertical pipe 73 and the air outlet pipe 61 are connected by hot melting. The bottom end of the air outlet pipe 61 is connected with a flow dividing plate 62. A cavity is formed inside the flow dividing plate 62 for the flow of gas. The shape of the cavity is in a herringbone state, and air outlet holes are formed on the inner wall of the herringbone-shaped cavity. The two ends of the air outlet holes are mixed to form a flow channel for the discharge of gas. One end of the flow dividing plate 62 is fixedly connected to the outside of the air outlet pipe 61. Fixed sleeves 63 are embedded and installed at both ends of the flow dividing plate 62 at the positions of the two outlet ends of the herringbone-shaped cavity. A push pipe 64 is movably connected inside the fixed sleeve 63. One end of the push pipe 64 is hollow in the middle and solid at the other end, so as to block the gas. A linkage plate 66 is installed at one end of the push pipe 64 through a clamping member, and this clamping member is a bolt. A spring rod 65 is embedded and installed between the opposite surfaces of the linkage plate 66 and the flow dividing plate 62. A discharge pipe 67 is embedded and installed at the top of the flow dividing plate 62 at the top position of the flow channel.

[0024] As Figures 1 to 3As shown in the figure, a fixing component is installed between the wire pay-off rack 2 and the guide wheel 42. The fixing component includes: a mounting frame 41, the mounting frame 41 is connected to the wire pay-off rack 2, the guide wheel 42 is connected to the wire pay-off rack 2 through the mounting frame 41, a V-shaped groove 72 is formed in the middle of the guide wheel 42, and the function of the V-shaped groove 72 is to limit the precious metal wire and prevent displacement.

[0025] The mounting frame 41 facilitates the installation of the guide wheel 42. At this time, since multiple guide wheels 42 are provided in this application, an adaptive tension adjustment structure is only installed on the outer side of the guide wheel 42 on the mounting frame 41, so that the rotation speed of the guide wheel 42 can be limited. For the guide wheels 42 installed on the outer sides of the moving rod, the column and the mounting rod, they only have the guiding function and do not have the rotation speed limiting function.

[0026] During use, the precious metal wire moves along the outer side of the guide wheel 42 inside the mounting frame 41. At this time, the precious metal wire moves and is limited inside the V-shaped groove 72 of the guide wheel 42, causing the guide wheel 42 to rotate.

[0027] Specifically, the mounting frame 41 is fixedly installed at one end of the mounting rod, the guide wheel 42 is rotatably connected to the inside of the mounting frame 41 through a round rod. A positioning hole is formed in the mounting frame 41 corresponding to one end of the round rod. A bearing is installed in the mounting frame 41 at a position outside the round rod by interference fit, and the round rod and the mounting frame 41 are connected through the bearing.

[0028] As Figure 3 and Figure 4 As shown in the figure, the gas pushing structure includes: a guide frame 51, a fan blade 52, a mounting pipe 53, a drainage pipe 54, a metal pipe 55, a piston rod 56 and a side plate 57. The guide frame 51 is connected to the outside of the mounting frame 41; the fan blade 52 is connected to the guide frame 51, and the guide frame 51 and the fan blade 52 cooperate to drive the gas to move. The mounting pipe 53 is connected to the guide frame 51; the drainage pipe 54 is connected to the mounting pipe 53; the metal pipe 55 is connected to the drainage pipe 54; the piston rod 56 is connected to the metal pipe 55, and the mounting pipe 53, the drainage pipe 54 and the metal pipe 55 drive the piston rod 56 to move; the side plate 57 is connected to the piston rod 56 and is used to drive the rotating shaft 58 to move.

[0029] Since it is necessary to drive the side plate 57 to move, at this time, gas needs to be generated, and the generated gas needs to be guided so that the gas drives the side plate 57 to move. For this reason, gas is generated through the gas pushing structure, and the gas is made to flow along a predetermined direction. The flowing gas is used to drive the side plate 57 to move, so that the side plate 57 drives the rotating shaft 58 to move, thereby changing the moving difficulty of the rotating shaft 58.

[0030] During use, the guide wheel 42 rotates, thereby driving the fan blade 52 to rotate synchronously. During the rotation of the fan blade 52, an air flow is generated. This air flow flows along the inside of the guide frame 51, enters the installation pipe 53 through the rectangular sleeve 71 of the guide frame 51, and then flows into the drainage pipe 54 along the installation pipe 53. In view of the conical structure of the air outlet end of the drainage pipe 54, the gas is accelerated when flowing through here. The accelerated gas enters the metal pipe 55 and reaches the bottom end of the piston rod 56 along the metal pipe 55, pushing the piston rod 56 to generate displacement. When the piston rod 56 moves, it drives the side plate 57 to move synchronously. The movement of the side plate 57 causes the rotating shaft 58 to move accordingly. During the movement of the rotating shaft 58, the friction roller 59 is driven to closely fit the outside of the guide wheel 42. In this way, both the extrusion of the guide wheel 42 is realized and the normal rotation of the guide wheel 42 is not hindered.

[0031] Specifically, the guide frame 51 is fixedly installed on the outside of the installation frame 41. The fan blade 52 is installed inside the guide frame 51 and one end is fixedly connected to the round rod of the guide wheel 42. The rectangular sleeve 71 is embedded and installed on the outside of the guide frame 51. The same installation pipe 53 is connected between one ends of the two rectangular sleeves 71. The drainage pipes 54 are symmetrically integrally formed on the inner side of the installation pipe 53. The end of the drainage pipe 54 away from the installation pipe 53 is conical. The metal pipe 55 is integrally formed at one end of the installation pipe 53. The piston rod 56 is movably connected inside the metal pipe 55. One end of the piston rod 56 is integrally formed with the side plate 57. The rotating shaft 58 is rotatably connected inside the side plate 57. A round hole is opened at the position corresponding to one end of the rotating shaft 58 inside the side plate 57. The rotating shaft 58 is inserted into the round hole. A ring is welded on the outside of the rotating shaft 58. The ring is rotatably connected inside the side plate 57. A circular groove is opened on the inside of the side plate 57 corresponding to the outside of the ring. The friction roller 59 is sleeved on the outside of the rotating shaft 58 and one end of the friction roller 59 is rotatably connected to the linkage plate 66.

[0032] The present invention also provides a method for using a wire releasing device for precious metal wire materials, including the following steps: Step 1: Component assembly: Install between the placing disc 1 and the wire releasing frame 2; Step 2: Component clamping: Adjust the friction between the placing disc 1 and the wire releasing frame 2 through the friction force adjusting component 3; Step 3: Threading: Intersperse the precious metal wire material inside the placing disc 1 along the outside of the guide wheel 42 of the wire releasing frame 2 and connect it to the subsequent device.

[0033] Working principle: When the device is actually used, the precious metal wire material is interspersed along the outside of the guide wheel 42. At this time, the precious metal wire material moves along the outside of the guide wheel 42 inside the installation frame 41. The precious metal wire material moves and is limited inside the V-shaped groove 72 of the guide wheel 42, causing the guide wheel 42 to rotate; The guide wheel 42 rotates, thereby driving the fan blades 52 to rotate synchronously. During the rotation of the fan blades 52, an air flow is generated. This air flow flows along the inside of the guide frame 51, enters the mounting pipe 53 through the rectangular sleeve 71 of the guide frame 51, and then flows into the drainage pipe 54 along the mounting pipe 53. In view of the fact that the air outlet end of the drainage pipe 54 is of a conical structure, the gas is accelerated when flowing through here. The accelerated gas enters the metal pipe 55 and reaches the bottom end of the piston rod 56 along the metal pipe 55, pushing the piston rod 56 to generate a displacement. When the piston rod 56 moves, it drives the side plate 57 to move synchronously. The movement of the side plate 57 causes the rotating shaft 58 to move accordingly. During the movement of the rotating shaft 58, the friction roller 59 is driven to closely fit against the outer side of the guide wheel 42. In this way, both the extrusion of the guide wheel 42 is achieved and the normal rotation of the guide wheel 42 is not hindered; Since the contact force increases after the friction roller 59 is in contact with the outer side of the guide wheel 42 at this time, the pressure driving the piston rod 56 to move increases. At this time, when the speed of the gas entering the mounting pipe 53 is greater than the speed of the gas discharged from the vertical pipe 73, the rotating shaft 58 still slowly presses against the guide wheel 42, and part of the gas enters the inside of the air outlet pipe 61 along the vertical pipe 73. The gas flowing inside the air outlet pipe 61 enters the inside of the flow dividing plate 62. At this time, the gas inside the flow dividing plate 62 increases. When the gas increases, the gas enters the inside of the fixed sleeve 63 and blows the pushing pipe 64, causing the pushing pipe 64 to move due to the increase in air pressure. When the pushing pipe 64 moves, it drives the linkage plate 66 to move. When the linkage plate 66 moves, it drives the spring rod 65 to stretch. During this process, part of the gas is discharged along the discharge pipe 67. Since the diameter of the discharge pipe 67 cannot be adjusted, when the diameter of the discharge pipe 67 remains unchanged, the gas flow rate entering the discharge pipe 67 increases. At this time, when the gas pressure inside the air outlet pipe 61 increases, the pushing distance of the pushing pipe 64 increases, and part of the gas still discharges along the inside of the discharge pipe 67. The discharged gas enters the bottom end of the precious metal wire, thereby achieving the purpose of blowing the bottom end of the precious metal wire, not only dissipating heat from the precious metal wire but also cleaning the precious metal wire.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it.

Claims

1. A precious metal wire pay-off device, characterized in that: include: A placement plate (1) for coiling and placing precious metal wires; A pay-off frame (2), connected to the placement plate (1), and used for guiding and paying off the precious metal wire; A friction force adjustment component (3) connected to the placement plate (1) and used for squeezing the pay-off frame (2); A guide wheel (42) connected to the pay-off frame (2), wherein the precious metal wire is arranged in the middle of the guide wheel (42); An adaptive tension adjustment structure comprises a gas propulsion structure, a rotating shaft (58), a friction roller (59) and a friction force adjustment structure; the gas propulsion structure is connected to the pay-off frame (2), the gas propulsion structure drives the rotating shaft (58) to move and causes the friction roller (59) connected to the outside of the rotating shaft (58) to fit with the guide wheel (42), the friction force adjustment structure is connected to the outside of the friction roller (59), and the friction force adjustment structure drives the friction roller (59) to move laterally outside the rotating shaft (58) to increase the contact surface between the friction roller (59) and the guide wheel (42).

2. A precious metal wire pay-off device according to claim 1, characterized in that: A fixing assembly is installed between the pay-off frame (2) and the guide wheel (42), and the fixing assembly comprises: The mounting frame (41) is connected to the pay-off frame (2), and the guide wheel (42) is connected to the pay-off frame (2) through the mounting frame (41).

3. A precious metal wire pay-off device according to claim 2, characterized in that: The gas-propelled structure comprises: A guide frame (51) connected to the outside of the mounting frame (41); The fan blades (52) are connected to the guide frame (51), and the guide frame (51) and the fan blades (52) cooperate with the driving gas to move.

4. A precious metal wire pay-off device according to claim 3, characterized in that: The gas-propelled structure further comprises: A mounting tube (53) connected to the guide frame (51); A drainage tube (54) connected to the mounting tube (53); A metal tube (55) connected to the drainage tube (54); A piston rod (56) is connected to the metal tube (55), and the mounting tube (53), the drainage tube (54) and the metal tube (55) drive the piston rod (56) to move; The side plate (57) is connected to the piston rod (56) and is used to drive the rotating shaft (58) to move.

5. A precious metal wire pay-off device according to claim 1, characterized in that: The friction force adjustment structure comprises: An air outlet pipe (61) connected to the mounting pipe (53); A splitter plate (62) connected to the air outlet pipe (61); A fixing sleeve (63) connected to the diverter plate (62); The push tube (64) is connected to the fixed sleeve (63), and the fixed sleeve (63), the flow dividing plate (62) and the air outlet pipe (61) drive the push tube (64) to move.

6. A precious metal wire pay-off device according to claim 5, characterized in that: The friction force adjustment structure also includes: A spring rod (65) connected to the diverter plate (62); The linkage plate (66) is connected to the spring rod (65), and the spring rod (65) drives the linkage plate (66) to move.

7. A precious metal wire pay-off device according to claim 6, characterized in that: The number of the friction force adjustment structures is set to two in total, and the top end of the diverter plate (62) is connected to a discharge pipe (67).

8. A precious metal wire pay-off device according to claim 7, characterized in that: The discharge pipe (67) is vertically arranged between the ground, the top end of the discharge pipe (67) is a gas outlet, and the gas outlet end of the discharge pipe (67) and the precious metal wire are arranged vertically symmetrically with the outer side.

9. A method for using the precious metal wire pay-off device according to claim 8, characterized in that: The following steps are involved: Step 1: Parts assembly: Install between the placement plate (1) and the pay-off frame (2); Step 2: Part clamping: The friction between the placement plate (1) and the pay-off frame (2) is adjusted by means of a friction adjustment component (3); Step 3: Threading: The precious metal wire in the placement plate (1) is inserted along the outer side of the guide wheel (42) of the pay-off frame (2) and connected to the subsequent device.

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