Amorphous nanocrystalline alloy strip tension magnetic field annealing device

Abstract

The present application relates to a tension magnetic field annealing device for amorphous nanocrystalline alloy strips, belonging to the technical field of alloy annealing, which includes a mobile platform, a plurality of magnetic blocks are fixedly arranged on the top surface of the mobile platform along its own length direction, and a plurality of contact rollers are rotatably arranged on the top surface of the mobile platform along its own length direction; a plurality of receiving grooves are provided in the mobile platform; a sliding plate is provided in the receiving groove along the vertical sliding direction; an electric plate 1 is fixedly arranged on the top surface of the sliding plate, and an electric stator 1 which can be in electrical contact with the electric plate 1 is fixedly arranged on the top surface of the receiving groove; the electric plate 1 is electrically connected to the power supply, and the electric stator 1 is electrically connected to the magnetic blocks; the sliding plate can be controlled to fall after the contact roller rotates. An arc groove is provided in the mobile platform below the contact roller; a rotating shaft extending into the arc groove is fixedly arranged at the bottom end of the contact roller; a rotating plate is fixedly arranged on the outer circumference of the rotating shaft, and the rotating plate is circumferentially slidably arranged in the arc groove. The present application has the effect of adjusting the offset of the local magnetic ring of the strip.

Description

Technical Field

[0001] The present application relates to the technical field of alloy annealing, and in particular to a tension magnetic field annealing device for amorphous nanocrystalline alloy strips. Background Art

[0002] During the annealing process of amorphous nanocrystalline alloy strips, tension and magnetic field are usually applied, which can effectively increase the magnetic permeability of the strip, reduce the coercive force and improve the hysteresis characteristics. Usually, the magnetic field effect on the strip is generated by the magnetic blocks set on both sides of the strip in the annealing furnace. The magnetic field helps the movement of the magnetic domain wall, thereby reducing the magnetic resistance of the material. The tension effect on the strip is a tension control component, which can detect the tension on the surface of the strip and adjust the rotation speed of the traction roller or the feed roller to achieve control of the tension of the strip.

[0003] When the strip is exposed to a magnetic field, magnetic domains may be rearranged in a local area inside the material, resulting in local magnetization and external magnetism. After local magnetization occurs, the strip will deviate under the action of an external magnetic field. Although the deviation of the strip can be corrected by an external tension control component, the magnetic field to which the strip is subjected will change slightly during its movement. This requires the external tension control component to continuously adjust the roller rotation speed in order to stabilize the tension, which introduces instability into the strip annealing process. Summary of the invention

[0004] In order to adjust the deviation problem caused by local magnetic ringing of the strip, the present application provides a tension magnetic field annealing device for amorphous nanocrystalline alloy strips.

[0005] The present application provides an amorphous nanocrystalline alloy strip tension magnetic field annealing device that adopts the following technical solution:

[0006] A tension magnetic field annealing device for amorphous nanocrystalline alloy strips comprises a moving platform, a plurality of magnetic blocks are fixedly arranged on the top surface of the moving platform along its length direction, a plurality of contact rollers are rotatably arranged on the top surface of the moving platform along its length direction; a plurality of accommodating grooves are provided in the moving platform; a sliding plate is vertically slidably arranged in the accommodating groove; an electric plate 1 is fixedly arranged on the top surface of the sliding plate, and an electric stator 1 which can be in electrical contact with the electric plate 1 is fixedly arranged on the top surface of the accommodating groove; the electric plate 1 is electrically connected to a power source, and the electric stator 1 is electrically connected to the magnetic blocks; the sliding plate can be controlled to fall after the contact rollers rotate.

[0007] Optionally, an arc-shaped groove is provided in the movable platform below the contact roller; a rotating shaft extending into the arc-shaped groove is fixedly provided at the bottom end of the contact roller; a rotating sheet is fixedly provided on the outer circumferential surface of the rotating shaft, and the rotating sheet is slidably arranged in the arc-shaped groove along the circumferential direction of the arc-shaped groove; a slider 1 is slidably arranged in the movable platform along its own width direction, and a slider 2 is slidably arranged along the vertical direction; the rotating sheet can contact the slider 1 after rotation, and the slider 1 can contact the top of the slider 2; the contact ends of the slider 1 and the slider 2 are respectively provided with chamfers, and the chamfers are arranged at the bottom end of the slider 1 and the end of the slider 2 close to the rotating sheet; a support plate is fixedly provided at the bottom end of the slider 2, and the support plate is slidably arranged in the accommodating groove, and the support plate provides support for the slide.

[0008] Optionally, a sliding groove is formed on the groove wall of the arc groove, and the sliding block is slidably arranged in the sliding groove; a guide piece is fixedly provided on the side wall of the sliding block, and a guide groove which can accommodate the guide piece is formed on the inner wall of the sliding groove; a compression spring is fixedly provided in the guide groove, and one end of the compression spring is fixedly connected to the guide piece for pushing the sliding block to reset in a direction close to the rotating piece.

[0009] Optionally, a slide groove 2 is provided at the bottom of the slide groove 1, and the slider 2 is slidably arranged in the slide groove 2; a guide piece 2 is fixedly provided on the side wall of the slider 2, and a guide groove 2 which can accommodate the guide piece 2 is provided on the inner wall of the slide groove 2; a compression spring 2 is fixedly provided in the guide groove 2, and two ends of the compression spring are fixedly connected to the guide piece 2 for pushing the slider 2 to reset upward.

[0010] Optionally, a guide shaft is fixedly provided at the top of the slide, and a guide hole for accommodating the guide shaft is opened on the top wall of the accommodating groove; a return spring is fixedly provided in the accommodating groove, and the end of the return spring is fixedly connected to the slide, so as to provide elastic force for the slide to return downward.

[0011] Optionally, the movable platform is provided with a cavity arranged along its length direction, and a plurality of the accommodating grooves are respectively arranged on both sides of the cavity; two sprockets are rotatably arranged in the cavity; a chain is sleeved on the circumference of the sprocket; the chain is composed of a plurality of chain links connected end to end; a baffle is slidably arranged in the chain link; the top surface of the movable platform is provided with two parallel strip holes along the moving direction of the strip, and the baffle can extend out of the strip holes; after the baffle extends out of the strip holes, it is located between the strip and the contact roller.

[0012] Optionally, a mounting groove is provided on the side of the chain link facing away from the sprocket, and a compression spring three is fixedly provided in the mounting groove, and the three ends of the compression spring are fixedly connected to the baffle plate for pushing the baffle plate to move toward the outside of the mounting groove; a magnetic sheet is fixedly provided on the bottom surface of the mounting groove, and the magnetic sheet is an electromagnet, and a metal sheet that can be magnetically attracted to the magnetic sheet is fixedly provided on the bottom surface of the baffle plate.

[0013] Optionally, two slide grooves three are provided on the bottom surface of the chain link, and a slider three is slidably arranged in the slide groove three along the thickness direction of the chain link; an electric stator plate two is fixedly arranged on the bottom surface of the slide groove three, and an electric plate two that can electrically contact the electric stator plate two is fixedly arranged on the bottom surface of the slider three; the electric stator plate two is electrically connected to the magnetic plate; and the electric plate two is electrically connected to the battery.

[0014] Optionally, a limit plate 1 is fixedly provided in the cavity; the limit plate 1 is arranged above the chain link at the lower part of the chain, and is used to prevent the slider 3 from escaping from the slide groove 3.

[0015] Optionally, a limit plate 2 is fixed in the cavity, and the limit plate 2 is arranged on one side of the sprocket. The limit plate 2 is provided with an inclined surface which can abut against the slider 3 in the direction away from the sprocket; the slider 3 is pressed upward into the slide groove 3 by the limit plate 2.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The present application sets a contact roller. When a local magnetic ring appears in the strip, the strip will contact the contact roller, thereby controlling the magnetic block at the corresponding position to cut off power, making it easier to adjust the strip that has deviated.

[0018] 2. The setting of the baffle can effectively block the contact between the strip and the contact roller, and at the same time can mark the magnetized part of the strip; the baffle will always move with the magnetized part of the strip until the strip moves out of the chain range, so that when the strip approaches the annealing furnace outlet, the signal is transmitted through an alarm mechanism such as an audible and visual device.

[0019] 3. A reset spring is provided on the slide to speed up the slide's falling speed. At the same time, after the contact roller rotates, the magnetic block at the corresponding position loses power and loses the magnetic field applied to the magnetized part, the friction force applied by the strip to the contact roller is reduced, and the contact roller itself will reset. The reset spring can slow down the slide's rising speed driven by the support plate. The slider three in the chain link only falls when it follows the chain link to the notch of the slide. Therefore, the reset speed of the slide is limited to facilitate the smooth falling of the slider three at the notch position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a partial cross-sectional view of the mobile platform of the embodiment of the present application.

[0021] Figure 2 It is a partial cross-sectional view of the mobile platform of the embodiment of the present application.

[0022] Figure 3 This is an embodiment of the present application Figure 2 A magnified schematic diagram of center A.

[0023] Figure 4 This is an embodiment of the present application Figure 1 A magnified schematic diagram of point B in the middle.

[0024] Figure 5 It is a cross-sectional view of the mobile platform of the embodiment of the present application.

[0025] Figure 6 It is a schematic diagram of the structure of the slide according to the embodiment of the present application.

[0026] Figure 7 It is a cross-sectional view of a chain link according to an embodiment of the present application.

[0027] Figure numerals: 1, moving platform; 11, arc groove; 12, rotating shaft; 13, slide groove 1; 14, slider 1; 15, slide groove 2; 16, slider 2; 17, chamfer; 2, magnetic block; 21, guide piece 1; 22, guide groove 1; 23, compression spring 1; 24, guide piece 2; 25, guide groove 2; 26, compression spring 2; 27, baffle; 3, contact roller; 31, strip hole; 32, Slide slot three; 33, slider three; 34, electric stator two; 35, electric plate two; 36, limit plate two; 37, limit plate one; 4, cavity; 41, accommodating slot; 42, slide; 43, return spring; 44, guide shaft; 45, electric plate one; 5, sprocket; 51, chain link; 52, chain; 53, mounting slot; 54, compression spring three; 55, magnetic plate; 56, rotating plate; 57, support plate. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-7 This application is described in further detail.

[0029] The present application discloses a tension magnetic field annealing device for amorphous nanocrystalline alloy strips. Figure 1 and Figure 2The tension magnetic field annealing device for amorphous nanocrystalline alloy strips includes a magnetic field system and a deviation correction system. The magnetic field system includes a magnetic field assembly fixed in the annealing furnace and a contact roller assembly fixed between the magnetic field assemblies. In the annealing furnace, the strip moves along the length direction of the annealing furnace; the magnetic field assembly includes two rows of magnetic field groups fixed on both sides of the strip movement direction. A mobile platform 1 is fixed along the length direction of the annealing furnace, and the strip moves along the length direction of the mobile platform 1 under the support of the unwinding roller and the winding roller. The magnetic field group includes a number of magnetic blocks 2 arranged along the length direction of the mobile platform 1 and fixed on the mobile platform 1, and two adjacent magnetic blocks 2 are in contact with each other; the two groups of magnetic field groups are arranged in parallel with each other; the strip is arranged between the two groups of magnetic field groups, and is at an equal distance from the two groups of magnetic blocks 2 located on both sides of itself. The magnetic block 2 is an electromagnet.

[0030] Reference Figure 1 and Figure 2 , the contact roller assembly includes two rows of contact roller groups arranged between two groups of magnetic field groups. The contact roller group includes a plurality of contact rollers 3 rotatably arranged on the mobile platform 1, and the contact rollers 3 are arranged between two adjacent magnetic blocks 2. Preferably, the two groups of contact roller groups are arranged in parallel, and the connecting line between the two contact rollers 3 arranged opposite to each other is parallel to the width direction of the mobile platform 1. When the surface of the strip is magnetized and attracted by the magnetic block 2, causing the moving direction of the strip to deviate, the strip will be twisted in the direction of the attracted magnetic block 2, and the strip will contact the surfaces of the two contact rollers 3 located at both ends of the magnetic block 2; after the contact rollers 3 contact the strip, they rotate due to the friction.

[0031] Reference Figure 3 An arc groove 11 is provided in the movable platform 1 below the contact roller 3. A rotating shaft 12 extending into the arc groove 11 is fixedly provided at the bottom end of the contact roller 3. A rotating piece 56 is fixedly provided on the outer circumferential surface of the rotating shaft 12, and the rotating piece 56 is slidably arranged in the arc groove 11 along the circumferential direction of the arc groove 11. A sliding groove 13 is provided on the groove wall of the arc groove 11, and a slider 14 is slidably arranged in the sliding groove 13 along the width direction of the movable platform 1; after the rotating piece 56 rotates with the rotating shaft 12, it can contact with the slider 14 and press the slider 14 to shrink inwardly of the sliding groove 13. A sliding groove 2 15 arranged vertically is provided at the bottom of the sliding groove 13, and a slider 2 16 is slidably arranged in the sliding groove 2 15; after the slider 14 shrinks inwardly of the sliding groove 13, it can contact with the top of the slider 2 16. The contact ends of the slider 1 14 and the slider 2 16 are respectively provided with chamfers 17 . The chamfers 17 are arranged at the bottom end of the slider 1 14 and at one end of the slider 2 16 close to the slide groove 1 13 .

[0032] Reference Figure 3A guide piece 21 is fixedly provided on the side wall of the slider 14, and a guide groove 22 for accommodating the guide piece 21 is opened on the inner wall of the slide groove 13. A compression spring 23 is fixedly provided in the guide groove 22, and the end of the compression spring 23 is fixedly connected to the guide piece 21, so as to push the slider 14 to return to its original position away from the slide groove 15.

[0033] Reference Figure 4 A guide piece 24 is fixedly provided on the side wall of the slider 16, and a guide groove 25 for accommodating the guide piece 24 is opened on the inner wall of the slide groove 15. A compression spring 26 is fixedly provided in the guide groove 25, and the end of the compression spring 26 is fixedly connected to the guide piece 24 for pushing the slider 16 to reset upward.

[0034] Specifically, after the strip is partially magnetized, it will be attracted by the magnetic field generated by the magnetic block 2 and deviate. After the strip is deviated, it first contacts the contact roller 3 and drives the contact roller 3 to rotate. During the rotation of the contact roller 3, the rotating piece 56 abuts against the slider 14 and pushes the slider 14 to move, and the slider 14 pushes the slider 2 16 to move downward. After the strip is separated from the contact roller 3, the slider 14 is reset by the compression spring 1 23 and pushes the rotating piece 56 to reset in the direction away from the slider 2 16.

[0035] Reference Figure 5 and Figure 6 , a cavity 4 is provided in the mobile platform 1 along its length direction, and a plurality of mutually connected receiving grooves 41 are provided on both sides of the cavity 4 along its length direction; a slide 42 is provided in the receiving groove 41 along the vertical sliding direction. A guide shaft 44 is fixedly provided at the top of the slide 42, and a guide hole for receiving the guide shaft 44 is provided on the top wall of the receiving groove 41; both the guide shaft 44 and the guide hole are polygonal, which limit the movement of the slide 42. A reset spring 43 is sleeved on the circumference of the guide shaft 44, and the two ends of the reset spring 43 are respectively fixedly connected to the receiving groove 41 and the slide 42, so as to provide elastic force for the slide 42 to reset downward. An electric sheet 45 is fixedly provided on the top surface of the slide 42, and an electric stator 1 which can be in electrical contact with the electric sheet 45 is fixedly provided on the top surface of the receiving groove 41; the electric sheet 45 is electrically connected to the power supply, and the electric stator 1 is electrically connected to the magnetic block 2.

[0036] Reference Figure 5 A support plate 57 is fixed at the bottom of the slider 16. The support plate 57 is slidably disposed in the receiving groove 41 and is located below the slide 42. The support plate 57 provides support for the slide 42. It should be noted that the support plates 57 are respectively located in the two receiving grooves 41, and the two adjacent support plates 57 jointly provide support for the slide 42, so that the electric sheet 1 45 is in electrical contact with the electric stator sheet 1; after both support plates 57 fall, the electric sheet 1 45 is separated from the electric stator sheet 1.

[0037] Specifically, when the strip is not in contact with the contact roller 3, the slider 2 16 and the support plate 57 are both in the initial position, the slide 42 is in the initial position under the support of the support plate 57, the motorized sheet 1 45 is in electrical contact with the stator sheet 1, and the magnetic block 2 is energized. After the contact roller 3 rotates, the slider 2 16 is pressed and moves downward; when two adjacent contact rollers 3 are in contact with the strip at the same time and rotate, the two support plates 57 under the slide 42 move downward at the same time, and the slide 42 moves downward under the action of the reset spring 43 and its own gravity, so that the motorized sheet 1 45 is separated from the stator sheet 1, and the magnetic block 2 is de-energized.

[0038] Specifically, after the magnetic block 2 is powered off, the magnetized part of the strip is less affected by the external magnetic field. After losing the effect of the external magnetic field, the magnetized part of the strip is reset under the action of the tension device outside the annealing furnace or the magnetic field of the magnetic block 2 on the other side, and the strip is separated from the contact roller 3; during the continuous movement of the strip, the magnetized part of the strip will also be separated from the contact roller 3, causing the contact roller 3 to reset. After losing the effect of the external force, the slider 2 16 is reset upward under the action of the reset spring 43, and the support plate 57 overcomes the action of the reset spring 43 to drive the slide 42 to reset upward, so that the electric sheet 1 45 and the electric stator sheet 1 are re-contacted, and the magnetic block 2 is powered on again.

[0039] Reference Figure 5 and Figure 7 , a sprocket assembly is arranged in the cavity 4. The sprocket assembly includes two sprockets 5 rotatably arranged at both ends of the cavity 4 and a chain 52 sleeved on the sprockets 5; the chain 52 is composed of a plurality of chain links 51 connected in series end to end. Two mounting grooves 53 are symmetrically provided on the side of the chain link 51 away from the sprocket 5, and a baffle 27 is slidably arranged in the mounting groove 53 along the thickness direction of the chain link 51; the end of the baffle 27 extends out of the mounting groove 53. A compression spring 3 54 is fixed in the mounting groove 53, and the end of the compression spring 3 54 is fixedly connected to the baffle 27, which is used to push the baffle 27 to move toward the outside of the mounting groove 53. A magnetic sheet 55 is fixed on the bottom surface of the mounting groove 53, and the magnetic sheet 55 is an electromagnet. A metal sheet that can be magnetically attracted to the magnetic sheet 55 is fixed on the bottom surface of the baffle 27.

[0040] Reference Figure 5 The top surface of the mobile platform 1 is provided with two parallel strip holes 31 along the moving direction of the strip, the strip holes 31 are connected with the cavity 4, and the chain link 51 is located between the two strip holes 31. When the magnetic sheet 55 is powered on, the magnetic sheet 55 produces an adsorption effect on the baffle 27, so that the baffle 27 moves in the strip hole 31; when the magnetic sheet 55 is powered off, the compression spring 3 54 provides an upward elastic force for the baffle 27, so that the top of the baffle 27 extends out of the strip hole 31. The two strip holes 31 are respectively located on both sides of the strip, and the strip hole 31 is located between the strip and the contact roller 3.

[0041] Specifically, when the strip is in a normal moving state, the magnetic sheet 55 is powered on, and the top height of the baffle 27 is lower than the height of the strip. After the strip is partially magnetized, the magnetic sheet 55 is powered off; the baffle 27 moves upward under the action of the compression spring 3 54, so that the top of the baffle 27 is higher than the strip; the baffle 27 blocks the strip and the contact roller 3, so that the magnetized part of the strip cannot contact the contact roller 3. Preferably, the distance between the two strip holes 31 can be set to be equal to the width of the strip, so that the magnetized part of the strip can only be located between the two baffles 27. It should be noted that the rotation speed of the sprocket 5 is equal to the moving speed of the strip, so that the baffle 27 can move with the strip after extending out of the strip hole 31.

[0042] Reference Figure 5 and Figure 7 , the width of the chain link 51 is smaller than the distance between the two slides 42 arranged opposite to each other, and the slide 42 is located below the upper chain link 51. Two slide grooves 3 32 are symmetrically provided on the bottom surface of the chain link 51, and a slider 3 33 is slidably provided in the slide groove 3 32 along the thickness direction of the chain link 51. Preferably, a limit frame is fixedly provided on the side wall of the slider 3 33 to prevent the slider 3 33 from sliding out of the slide groove 3 32. An electric stator 2 34 is fixedly provided on the bottom surface of the slide groove 3 32, and an electric sheet 2 35 that can be in electrical contact with the electric stator 2 34 is fixedly provided on the bottom surface of the slider 3 33. The electric stator 2 34 is electrically connected to the magnetic sheet 55; a battery for powering the magnetic sheet 55 is buried in the chain link 51, and a plurality of electric sheets 2 35 are electrically connected to the battery respectively, so that a plurality of magnetic sheets 55 are connected in parallel.

[0043] Specifically, during the movement of the chain link 51, the slider 3 33 is located above the slide 42, and the slide 42 provides support for the slider 3 33 to prevent the slider 3 33 from moving downward; the electric sheet 2 35 is in electrical contact with the electric stator 2 34. When the slide 42 loses its support and moves downward, a gap appears on the support platform formed by the slide 42, and the slider 3 33 in the chain link 51 that moves to the gap falls under its own gravity, the electric sheet 2 35 is separated from the electric stator 2 34, and the magnetic sheet 55 is powered off; the baffle 27 on the chain link 51 extends out of the bar hole 31.

[0044] Reference Figure 5 , a limiting plate 1 37 and a limiting plate 2 36 are fixedly arranged in the cavity 4. The limiting plate 1 37 is arranged above the lower link 51 of the chain 52, and is used to prevent the slider 3 33 in the link 51 from escaping from the slide groove 3 32. The limiting plate 2 36 is arranged on one side of the sprocket 5, and the limiting plate 2 36 has an upwardly inclined surface in the direction away from the sprocket 5. When the bottom end of the slider 3 33 moves to contact the limiting plate 2 36, it will be pressed upward, so that the slider 3 33 is received in the slide groove 3 32.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tension magnetic field annealing device for amorphous nanocrystalline alloy strips, comprising a mobile platform (1), wherein a plurality of magnetic blocks (2) are fixedly arranged on the top surface of the mobile platform (1) along its length direction, and characterized in that: The top surface of the mobile platform (1) is provided with a plurality of contact rollers (3) which are rotatable along its length direction; the mobile platform (1) is provided with a plurality of receiving grooves (41); a sliding plate (42) is provided in the receiving groove (41) so as to slide vertically; an electric plate (45) is fixedly provided on the top surface of the sliding plate (42); an electric stator plate (45) which can be in electrical contact with the electric plate (45) is fixedly provided on the top surface of the receiving groove (41); the electric plate (45) is electrically connected to a power source, and the electric stator plate (45) is electrically connected to the magnetic block (2); the contact roller (3) can control the sliding plate (42) to fall after rotating; An arc groove (11) is provided in the movable platform (1) below the contact roller (3); a rotating shaft (12) is fixedly provided at the bottom end of the contact roller (3) and extends into the arc groove (11); a rotating sheet (56) is fixedly provided on the outer circumferential surface of the rotating shaft (12), and the rotating sheet (56) is slidably arranged in the arc groove (11) along the circumferential direction of the arc groove (11); a slider 1 (14) is slidably arranged in the movable platform (1) along its width direction, and a slider 2 (16) is slidably arranged in the vertical direction; the rotating sheet (56) can rotate with the movable platform (1) to move in a direction opposite to the movable platform (1). The slider (14) is in contact with the slider (14), and the slider (14) can be in contact with the top of the slider (16); the contact ends of the slider (14) and the slider (16) are respectively provided with chamfers (17), and the chamfers (17) are arranged at the bottom end of the slider (14) and one end of the slider (16) close to the rotating piece (56); a support plate (57) is fixed at the bottom end of the slider (16), and the support plate (57) is slidably arranged in the accommodating groove (41), and the support plate (57) provides support for the sliding piece (42); The movable platform (1) has a cavity (4) arranged along its length direction, and a plurality of accommodating grooves (41) are respectively arranged on both sides of the cavity (4); two sprocket wheels (5) are rotatably arranged in the cavity (4); a chain (52) is sleeved around the sprocket wheel (5); the chain (52) is composed of a plurality of chain links (51) connected end to end; a baffle (27) is slidably arranged in the chain link (51); the top surface of the movable platform (1) has two parallel strip holes (31) arranged along the moving direction of the strip, and the baffle (27) can extend out of the strip holes (31); after the baffle (27) extends out of the strip holes (31), it is located between the strip and the contact roller (3); A mounting groove (53) is provided on the side of the chain link (51) facing away from the sprocket (5), a compression spring (54) is fixedly arranged in the mounting groove (53), an end of the compression spring (54) is fixedly connected to the baffle (27) for pushing the baffle (27) to move toward the outside of the mounting groove (53); a magnetic sheet (55) is fixedly arranged on the bottom surface of the mounting groove (53), the magnetic sheet (55) is an electromagnet, and a metal sheet that can be magnetically attracted to the magnetic sheet (55) is fixedly arranged on the bottom surface of the baffle (27); The bottom surface of the chain link (51) is provided with two slide grooves (32), and a slider (33) is slidably arranged in the slide groove (32) along the thickness direction of the chain link (51); an electric stator (34) is fixedly arranged on the bottom surface of the slide groove (32), and an electric sheet (35) capable of electrically contacting the electric stator (34) is fixedly arranged on the bottom surface of the slider (33); the electric stator (34) is electrically connected to the magnetic sheet (55); and the electric sheet (35) is electrically connected to a storage battery; The groove wall of the arc groove (11) is provided with a slide groove (13), and the slider (14) is slidably arranged in the slide groove (13); the side wall of the slider (14) is fixedly provided with a guide piece (21), and the inner wall of the slide groove (13) is provided with a guide groove (22) capable of accommodating the guide piece (21); a compression spring (23) is fixedly provided in the guide groove (22), and the end of the compression spring (23) is fixedly connected to the guide piece (21) for pushing the slider (14) to return to a position close to the rotating piece (56); A second slide groove (15) is provided at the bottom of the first slide groove (13), and the second slider (16) is slidably arranged in the second slide groove (15); a second guide piece (24) is fixedly provided on the side wall of the second slider (16), and a second guide groove (25) capable of accommodating the second guide piece (24) is provided on the inner wall of the second slide groove (15); a second compression spring (26) is fixedly provided in the second guide groove (25), and an end of the second compression spring (26) is fixedly connected to the second guide piece (24) for pushing the second slider (16) to return upward; A guide shaft (44) is fixedly provided at the top end of the slide (42), and a guide hole for accommodating the guide shaft (44) is formed on the top wall of the accommodating groove (41); a return spring (43) is fixedly provided in the accommodating groove (41), and an end of the return spring (43) is fixedly connected to the slide (42) for providing an elastic force for the slide (42) to return downward.

2. The tension magnetic field annealing device for amorphous nanocrystalline alloy strip according to claim 1, characterized in that: A limit plate 1 (37) is fixedly disposed in the cavity (4); the limit plate 1 (37) is disposed above the chain link (51) at the lower portion of the chain (52) and is used to prevent the slide block 3 (33) from escaping from the slide groove 3 (32).

3. The tension magnetic field annealing device for amorphous nanocrystalline alloy strip according to claim 1, characterized in that: A second limit plate (36) is fixedly provided in the cavity (4). The second limit plate (36) is arranged on one side of the sprocket (5). The second limit plate (36) is provided with an inclined surface which can abut against the third slide block (33) in a direction away from the sprocket (5). The third slide block (33) is pressed upward into the third slide groove (32) by the second limit plate (36).

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