Take-up mechanism of magnesium-aluminum alloy wire drawing machine and method thereof

Abstract

The invention relates to the technical field of wire drawing machines, in particular to a magnesium-aluminum alloy wire drawing machine take-up mechanism and a method thereof.The magnesium-aluminum alloy wire drawing machine take-up mechanism comprises a base, two sets of first fixing plates are fixedly installed at one end of the base, and two sets of second fixing plates are fixedly installed at the other end of the base; a lead screw driving assembly is arranged between the two sets of second fixing plates, a threading block is fixed to a moving block of the lead screw driving assembly, one set of first fixing plates are connected with the base through positioning bolts, and a motor support is fixedly installed on the side, corresponding to the first fixing plates, of the base. And meanwhile, the pressing plate gradually moves downwards around the fixing rod along with winding of the alloy wire, the arc-shaped rod is driven to move downwards to extrude the telescopic spring, at the moment, the telescopic spring provides opposite force, the pressing plate abuts against the alloy wire all the time, the alloy wire is pressed tightly, and therefore the alloy wire cannot be loosened when wound on the take-up roller.

Description

Technical Field

[0001] The present invention relates to the technical field of wire drawing machines, and in particular to a wire taking-up mechanism and a method for a magnesium-aluminum alloy wire drawing machine. Background Art

[0002] Aluminum-magnesium alloy wire is an industrial material, mainly grade 5154, produced by Yongchangda Metal Technology (Shenzhen) Co., Ltd. Aluminum-magnesium alloy wire has excellent acid and alkali resistance, outstanding corrosion resistance, and combines high strength and toughness. It has excellent electrical conductivity and is flexible and resistant to bending, with high elongation and ultra-light density. It can still maintain stable physical properties in high-temperature environments and is widely used in aircraft, transportation vehicles, shipbuilding and other fields. In addition, aluminum-magnesium alloy wire can also be used for welding aluminum-magnesium alloy electrodes and welding with a magnesium content greater than 3%, braiding materials for sanitary ware hoses, materials for oil hoses for automobiles and machinery, shielding wires for electronic communication cables, and hardware processing.

[0003] The existing technology has the following deficiencies: The existing magnesium-aluminum alloy wire drawing machine winding mechanism usually winds the alloy wire by rotating the winding roller during the winding process. However, there is often a lack of fixing components for the alloy wire during the winding process, resulting in a non-compact arrangement during the winding process, making the quality of the alloy wire winding by the device low, and the tension of the alloy wire is insufficient, which easily leads to loose winding of the alloy wire. In order to solve the above problems, a magnesium-aluminum alloy wire drawing machine winding mechanism and a method thereof are provided. Summary of the Invention

[0004] The present invention aims to solve the problems existing in the prior art and provides the following technical solutions: The wire drawing machine for magnesium-aluminum alloy wire comprises a wire taking-up mechanism, comprising a base, two groups of first fixing plates being fixedly mounted on one end of the base, two groups of second fixing plates being fixedly mounted on the other end of the base, a screw drive assembly being arranged between the two groups of the second fixing plates, a threading block being fixed on the moving block of the screw drive assembly, one group of the first fixing plates being connected to the base via a positioning bolt, a motor bracket being fixedly mounted on one side of the base corresponding to the first fixing plate, a motor being fixedly mounted on the motor bracket, a mounting slot being provided on the first fixing plate, a rotating rod being provided between the two groups of the mounting slots, a wire taking-up roller being sleeved on the rotating rod, a card slot being provided on the detachable end of the wire taking-up roller, a fixing rod being fixedly mounted between the two groups of the first fixing plates, a clamping assembly being arranged on the fixing rod, and an adjustment plate being rotatably connected to the clamping assembly.

[0005] As an improvement to the above technical solution, the screw drive assembly includes a bidirectional screw rotatably arranged between two groups of second fixed plates, a guide block is threadedly installed on the bidirectional screw, a threading block is fixedly installed on the top of the guide block, and a guide rod is fixedly installed below the two groups of second fixed plates corresponding to the bidirectional screw, and the guide block is slidably connected to the guide rod.

[0006] As an improvement to the above technical solution, a transmission shaft is fixedly installed on the output end of the motor, a coupling is fixedly installed between the transmission shaft and the rotating rod, and a synchronous belt is installed between the transmission shaft and the bidirectional screw.

[0007] As an improvement of the above technical solution, the mounting groove is tilted upward, both ends of the rotating rod are rotatably connected to the mounting groove through bearings, and a sliding groove is provided above the first fixing plate corresponding to the mounting groove.

[0008] As an improvement of the above technical solution, a slider is installed for sliding inside the slide groove. The slider is arc-shaped and fits with the outer surface of the bearing. The top of the slider is rotated to install a threaded rod. The threaded rod extends to the top of the first fixed plate and is threadedly connected to it.

[0009] As an improvement of the above technical solution, the clamping assembly includes two groups of connecting plates rotatably arranged on a fixed rod, the two groups of connecting plates are respectively fitted with the two ends of the take-up roller, a clamping plate is fixedly installed between the two groups of connecting plates, an arc rod is fixedly installed on the side of the connecting plate, and a mounting hole is opened on the clamping plate.

[0010] As an improvement of the above technical solution, one end of the arc rod away from the connecting plate passes through the base, and a telescopic spring is sleeved between the arc rod corresponding to the connecting plate and the base.

[0011] As an improvement of the above technical solution, an adjustment plate is rotatably installed inside the mounting hole, and connecting grooves are provided at both ends of the adjustment plate. A connecting rod is fixedly installed inside the connecting groove, and the connecting rod is rotatably connected to the inner wall of the mounting hole. A torque spring is sleeved on the connecting rod, and the two ends of the torque spring are fixedly connected to the adjustment plate and the clamping plate respectively.

[0012] As an improvement of the above technical solution, a card block is slidably installed inside the card slot, one side of the card block extends to the outside of the take-up roller, and a through hole is opened in the take-up roller at a position corresponding to the card slot.

[0013] A method for winding a magnesium-aluminum alloy wire drawing machine includes the following steps: S100, passing one end of the alloy wire through the threading block, around the fixing rod and the adjustment plate, and inserting it into the slot; S200, fixing the take-up roller between the two sets of mounting grooves and tightening the alloy wire; S300, the motor starts, driving the take-up roller to rotate and reel the alloy wire. At the same time, the lead screw drive assembly drives the threading block to reciprocate, so that the alloy wire is evenly wound on the take-up roller. At the same time, the pressing assembly presses the reeled alloy wire and provides a certain tension through the adjustment plate.

[0014] Beneficial effects of the present invention: 1. The wire drawing mechanism and method of the magnesium-aluminum alloy wire drawing machine are characterized by providing a pressing plate and a telescopic spring. When the alloy wire is wound, the pressing plate abuts against the alloy wire. At the same time, the pressing plate gradually moves downward around the fixed rod as the alloy wire is wound, and drives the arc rod to move downward to squeeze the telescopic spring. At this time, the telescopic spring provides an opposite force, so that the pressing plate always abuts against the alloy wire, compressing the alloy wire, so that the alloy wire will not become loose when it is wound on the take-up roller.

[0015] 2. The winding mechanism and method of the magnesium-aluminum alloy wire drawing machine are configured with an adjustment plate and a torque spring. When winding, one end of the alloy wire is passed through the threading block and bypasses the fixed rod and the adjustment plate to connect with the winding roller. When the alloy wire is wound, the adjustment plate and the torque spring cooperate to provide a certain tension to prevent uncontrollable changes during winding, which causes the alloy wire to become loose during winding and affects the quality after winding. By cooperating with the clamping plate, the adjustment plate is always placed on the outer ring of the alloy wire winding to ensure the stability of the alloy wire during winding.

[0016] 3. The wire-winding mechanism and method of the magnesium-aluminum alloy wire drawing machine are characterized in that a card slot is provided, one end of the alloy wire is inserted into the card slot, and a card block is pushed on the outer surface of the wire-winding roller to clamp the end of the alloy wire, thereby preventing the alloy wire from falling off the wire-winding roller during winding and affecting the winding of the alloy wire. After the winding is completed and the wire-winding roller is removed, the card block is pushed in the reverse direction to cancel the fixation of the end of the alloy wire, so that the wound alloy wire can be removed for convenience of subsequent sale. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the present invention; Figure 3 This is a schematic structural diagram of the compression plate of the present invention; Figure 4 It is a schematic diagram of the partial decomposition structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the take-up roller of the present invention; Figure 6 Schematic diagram of the internal structure of the first fixing plate of the present invention.

[0018] Figure markings: 1. base; 2. first fixed plate; 201. mounting groove; 202. rotating rod; 203. take-up roller; 3. second fixed plate; 301. bidirectional screw; 302. guide block; 303. threading block; 304. guide rod; 4. motor bracket; 401. motor; 402. transmission shaft; 403. coupling; 404. synchronous belt; 5. slide groove; 501. slider; 502. threaded rod; 6. fixed rod; 601. connecting plate; 602. pressing plate; 7. arc rod; 701. telescopic spring; 8. mounting hole; 801. adjusting plate; 802. connecting groove; 803. connecting rod; 804. torque spring; 9. clamping groove; 901. clamping block; 902. through hole. DETAILED DESCRIPTION

[0019] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0020] See also Figure 1-6 , the present invention provides a technical solution: Example 1

[0021] The wire drawing machine for magnesium-aluminum alloy wire comprises a base 1, two groups of first fixed plates 2 are fixedly installed on one end of the base 1, and two groups of second fixed plates 3 are fixedly installed on the other end of the base 1, and is characterized in that a screw drive assembly is arranged between the two groups of second fixed plates 3, and a threading block 303 is fixed on the moving block of the screw drive assembly, wherein one group of first fixed plates 2 is connected to the base 1 through a positioning bolt, and a motor bracket 4 is fixedly installed on one side of the base 1 corresponding to the first fixed plate 2, and a motor 401 is fixedly installed on the motor bracket 4, and a mounting groove 201 is provided on the first fixed plate 2, and a rotating rod 202 is provided between the two groups of mounting grooves 201, and a wire-taking roller 203 is sleeved on the rotating rod 202, and a card slot 9 is provided on the detachable end of the wire-taking roller 203, and a fixing rod 6 is fixedly installed between the two groups of first fixed plates 2, and a clamping assembly is arranged on the fixing rod 6, and an adjustment plate 801 is rotatably connected to the clamping assembly.

[0022] In use, one end of the alloy wire is threaded through the threading block 303, and is inserted into the inside of the clamping groove 9 by passing around the fixed rod 6 and the adjusting plate 801, then the take-up roller 203 is fixed between the two groups of mounting grooves 201, and the alloy wire is tightened, then the motor 401 is started to drive the take-up roller 203 to rotate, and the alloy wire is wound, at the same time, the threading block 303 is driven to reciprocate by the lead screw driving assembly, so that the alloy wire is uniformly wound on the take-up roller 203, and when winding, the wound alloy wire is compressed by the compression assembly to prevent loosening, and at the same time, the adjusting plate 801 provides a certain tension to prevent uncontrollable changes during winding, which may cause the alloy wire to loosen during winding. Example two

[0023] Please refer to Figure 1 and Figure 2 In order to further ensure that the threading block 303 can realize the reciprocating movement function on the basis of example one, the preferred specific embodiment of the lead screw driving assembly is given.

[0024] The lead screw driving assembly comprises a bidirectional lead screw 301, a guide block 302, a threading block 303 and a guide rod 304.

[0025] The bidirectional lead screw 301 is rotatably arranged between the two groups of second fixed plates 3, the guide block 302 is threadedly installed on the bidirectional lead screw 301, the threading block 303 is fixedly installed on the top of the guide block 302, the guide rod 304 is fixedly installed below the two groups of second fixed plates 3 corresponding to the bidirectional lead screw 301, and the guide block 302 and the guide rod 304 are slidably connected.

[0026] When the bidirectional lead screw 301 rotates, the guide block 302 slides transversely with the bidirectional lead screw 301, and when moving to the edge of the bidirectional lead screw 301, the guide block 302 drives the threading block 303 to reciprocate on the bidirectional lead screw 301 through the two opposite screw grooves on the bidirectional lead screw 301. Example three

[0027] Please refer to Figure 1 and Figure 2 In order to further ensure the synchronous movement of the rotating rod 202 and the bidirectional lead screw 301 on the basis of example one, the preferred specific embodiment of the motor 401 is given.

[0028] The output end of the motor 401 is fixedly installed with a transmission shaft 402, the transmission shaft 402 and the rotating rod 202 are fixedly installed with a shaft coupling 403, and the transmission shaft 402 and the bidirectional lead screw 301 are drivingly installed with a synchronous belt 404.

[0029] During winding, the motor 401 is started, driving the rotating rod 202 to rotate through the coupling 403, and at the same time driving the bidirectional screw 301 and the rotating rod 202 to rotate synchronously through the synchronous belt 404, thereby ensuring that the alloy wire can be evenly wound on the take-up roller 203 as the threading block 303 moves. Example 4

[0030] Please refer to Figure 1 and Figure 6 In order to further ensure the detachable function of the take-up roller 203 on the basis of the first embodiment, a preferred specific implementation of the mounting groove 201 is provided.

[0031] The mounting groove 201 is tilted upward, and both ends of the rotating rod 202 are rotatably connected to the mounting groove 201 through bearings. A sliding groove 5 is provided above the first fixing plate 2 corresponding to the mounting groove 201 .

[0032] After the alloy wire is wound, the movable first fixing plate 2 is moved backward by the positioning bolts, and then the winding roller 203 is removed to facilitate the next winding.

[0033] In order to further optimize the installation, the problem of fixing the take-up roller 203 is solved.

[0034] The slider 501 is installed by sliding inside the slide groove 5. The slider 501 is set in an arc shape and fits with the outer surface of the bearing. The top of the slider 501 is rotated to install the threaded rod 502. The threaded rod 502 extends to the top of the first fixed plate 2 and is threadedly connected thereto.

[0035] When installing the take-up roller 203, rotate the threaded rod 502 to drive the slider 501 to move to the inside of the slide groove 5, then put the take-up roller 203 on the rotating rod 202, and place the rotating rod 202 inside the installation groove 201 through the bearing, then rotate the threaded rod 502 in the opposite direction to make the slider 501 fit with the bearing, thereby fixing the rotating rod 202 and the take-up roller 203, thereby fixing the take-up roller 203. Example 5

[0036] Please refer to Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4 In order to further ensure the stability of the alloy wire during winding, based on the first embodiment, a preferred specific implementation of the pressing assembly is provided.

[0037] The pressing assembly includes two groups of connecting plates 601 , a pressing plate 602 , and an arc-shaped plate 7 .

[0038] The two sets of connecting plates 601 are rotatably set on the fixed rod 6, and the two sets of connecting plates 601 are respectively fitted with the two ends of the take-up roller 203. The clamping plate 602 is fixedly installed between the two sets of connecting plates 601. The arc rod 7 is fixedly installed on the side of the connecting plate 601, and a mounting hole 8 is opened on the clamping plate 602.

[0039] When the alloy wire is wound, the pressing plate 602 abuts against the take-up roller 203. At the same time, the pressing plate 602 gradually moves downward around the fixed rod 6 as the alloy wire is wound, and always abuts against the alloy wire to press the alloy wire, so that the alloy wire will not become loose when it is wound on the take-up roller 203.

[0040] In order to further optimize the installation and solve the problem of looseness when the alloy wire is coiled.

[0041] One end of the arc rod 7 away from the connecting plate 601 passes through the base 1 , and a telescopic spring 701 is sleeved between the arc rod 7 corresponding to the connecting plate 601 and the base 1 .

[0042] When the clamping plate 602 gradually moves downward as the alloy wire is wound around the fixed rod 6, it can push the arc rod 7 to move downward and squeeze the telescopic spring 701. At this time, the telescopic spring 701 provides an opposite force to ensure that the clamping plate 602 is always in contact with the alloy wire.

[0043] In order to further optimize the installation, it is necessary to solve the problem of uncontrollable changes in the alloy wire during winding, which causes the alloy wire to become loose during winding.

[0044] An adjusting plate 801 is rotatably installed inside the mounting hole 8, and connecting grooves 802 are provided at both ends of the adjusting plate 801. A connecting rod 803 is fixedly installed inside the connecting groove 802. The connecting rod 803 is rotatably connected to the inner wall of the mounting hole 8, and a torque spring 804 is sleeved on the connecting rod 803. The two ends of the torque spring 804 are fixedly connected to the adjusting plate 801 and the clamping plate 602 respectively.

[0045] By setting the adjustment plate 801 and the torque spring 804, when winding, one end of the alloy wire is passed through the threading block 303, and bypasses the fixed rod 6 and the adjustment plate 801 to connect with the winding roller 203. When the alloy wire is wound, the adjustment plate 801 and the torque spring 804 cooperate to provide a certain tension to prevent uncontrollable changes during winding, which causes the alloy wire to become loose during winding and affects the quality after winding. By cooperating with the clamping plate 602, the adjustment plate 801 is always in the outer ring of the alloy wire winding to ensure the stability of the alloy wire during winding. Example 6

[0046] Please refer to Figure 1 and Figure 5In order to further ensure that the alloy wire does not fall off when being wound on the basis of the first embodiment, a preferred embodiment of the card slot 9 is provided.

[0047] A clamping block 901 is slidably installed inside the clamping slot 9 , one side of the clamping block 901 extends to the outside of the take-up roller 203 , and a through hole 902 is opened on the take-up roller 203 at a position corresponding to the clamping slot 9 .

[0048] By setting a card slot 9, one end of the alloy wire is inserted into the interior of the card slot 9, and the card block 901 is pushed on the outer surface of the take-up roller 203 to clamp the end of the alloy wire to prevent the alloy wire from falling off the take-up roller 203 during winding, affecting the winding of the alloy wire. After the winding is completed and the take-up roller 203 is removed, the card block 901 is pushed in the reverse direction to cancel the fixation of the end of the alloy wire, so that the wound alloy wire can be removed for convenience of subsequent sale. Example 7

[0049] In order to cooperate with the first embodiment, a method for using the wire drawing mechanism of a magnesium-aluminum alloy wire drawing machine is also provided, which is applied to the wire drawing mechanism of a magnesium-aluminum alloy wire drawing machine described in any one of the above embodiments, comprising the following steps: S100 , pass one end of the alloy wire through the threading block 303 , around the fixing rod 6 and the adjustment plate 801 , and insert into the interior of the card slot 9 .

[0050] S200, fixing the take-up roller 203 between the two sets of mounting grooves 201, and tightening the alloy wire.

[0051] S300, the motor 401 starts, driving the take-up roller 203 to rotate and reel the alloy wire. At the same time, the screw drive assembly drives the threading block 303 to reciprocate, so that the alloy wire is evenly wound on the take-up roller 203. At the same time, the clamping assembly clamps the reeled alloy wire and provides a certain tension through the adjustment plate 801.

[0052] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the same. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A wire-drawing mechanism for a magnesium-aluminum alloy wire drawing machine, comprising a base (1), one end of the base (1) being fixedly mounted with two sets of first fixing plates (2), and the other end of the base (1) being fixedly mounted with two sets of second fixing plates (3), characterized in that: A screw drive assembly is provided between the two groups of the second fixed plates (3), and a threading block (303) is fixed on the moving block of the screw drive assembly. One group of the first fixed plates (2) is connected to the base (1) through a positioning bolt, and a motor bracket (4) is fixedly installed on one side of the base (1) corresponding to the first fixed plate (2), and a motor (401) is fixedly installed on the motor bracket (4). The first fixed plate (2) is provided with a mounting groove (201), and a rotating rod (202) is provided between the two groups of the mounting grooves (201). A take-up roller (203) is sleeved on the rotating rod (202), and a card slot (9) is provided on the detachable end of the take-up roller (203). A fixed rod (6) is fixedly installed between the two groups of the first fixed plates (2), and a pressing assembly is provided on the fixed rod (6), and an adjustment plate (801) is rotatably connected to the pressing assembly.

2. The wire take-up mechanism of the magnesium-aluminum alloy wire drawing machine according to claim 1, characterized in that: The screw drive assembly includes a bidirectional screw (301) rotatably arranged between two sets of second fixed plates (3), a guide block (302) threadedly mounted on the bidirectional screw (301), a threading block (303) fixedly mounted on the top of the guide block (302), and a guide rod (304) fixedly mounted below the two sets of second fixed plates (3) corresponding to the bidirectional screw (301), and the guide block (302) is slidably connected to the guide rod (304).

3. The wire take-up mechanism of the magnesium-aluminum alloy wire drawing machine according to claim 1, characterized in that: A transmission shaft (402) is fixedly installed at the output end of the motor (401), a coupling (403) is fixedly installed between the transmission shaft (402) and the rotating rod (202), and a synchronous belt (404) is installed between the transmission shaft (402) and the bidirectional lead screw (301).

4. The wire take-up mechanism of the magnesium-aluminum alloy wire drawing machine according to claim 1, characterized in that: The mounting groove (201) is arranged to be tilted upward, both ends of the rotating rod (202) are rotatably connected to the mounting groove (201) via bearings, and a sliding groove (5) is provided above the first fixing plate (2) corresponding to the mounting groove (201).

5. The wire take-up mechanism of the magnesium-aluminum alloy wire drawing machine according to claim 4, characterized in that: A slider (501) is slidably installed inside the slide groove (5), and the slider (501) is arranged in an arc shape and fits with the outer surface of the bearing. A threaded rod (502) is rotatably installed on the top of the slider (501), and the threaded rod (502) extends to the top of the first fixed plate (2) and is threadedly connected thereto.

6. The wire take-up mechanism of the magnesium-aluminum alloy wire drawing machine according to claim 1, characterized in that: The clamping assembly comprises two groups of connecting plates (601) rotatably arranged on a fixed rod (6), the two groups of connecting plates (601) respectively fit with the two ends of the take-up roller (203), a clamping plate (602) is fixedly installed between the two groups of connecting plates (601), an arc-shaped rod (7) is fixedly installed on the side of the connecting plate (601), and a mounting hole (8) is opened on the clamping plate (602).

7. The wire take-up mechanism of the magnesium-aluminum alloy wire drawing machine according to claim 6, characterized in that: One end of the arc-shaped rod (7) away from the connecting plate (601) passes through the base (1), and a telescopic spring (701) is sleeved between the arc-shaped rod (7) and the base (1), corresponding to the connecting plate (601).

8. The wire take-up mechanism of the magnesium-aluminum alloy wire drawing machine according to claim 6, characterized in that: An adjusting plate (801) is rotatably mounted inside the mounting hole (8), and connecting grooves (802) are provided at both ends of the adjusting plate (801). A connecting rod (803) is fixedly mounted inside the connecting groove (802), and the connecting rod (803) is rotatably connected to the inner wall of the mounting hole (8). A torque spring (804) is sleeved on the connecting rod (803), and the two ends of the torque spring (804) are fixedly connected to the adjusting plate (801) and the pressing plate (602), respectively.

9. The wire take-up mechanism of the magnesium-aluminum alloy wire drawing machine according to claim 1, characterized in that: A card block (901) is slidably mounted inside the card slot (9), one side of the card block (901) extends to the outside of the take-up roller (203), and a through hole (902) is provided on the take-up roller (203) at a position corresponding to the card slot (9).

10. A method for winding a magnesium-aluminum alloy wire drawing machine, applied to the winding mechanism of a magnesium-aluminum alloy wire drawing machine according to any one of claims 1 to 9, characterized in that: The steps include: S100, passing one end of the alloy wire through the threading block (303), around the fixing rod (6) and the adjustment plate (801), and inserting it into the interior of the card slot (9); S200, fixing the take-up roller (203) between the two sets of mounting grooves (201), and tightening the alloy wire; S300, the motor (401) is started, driving the take-up roller (203) to rotate and reel the alloy wire. At the same time, the lead screw drive assembly drives the threading block (303) to reciprocate, so that the alloy wire is evenly wound on the take-up roller (203). At the same time, the pressing assembly presses the reeled alloy wire and provides a certain tension through the adjustment plate (801).

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