Roll changing mechanism of annealing furnace of stainless steel band processing line

Abstract

The invention relates to the technical field of stainless steel processing equipment, in particular to an annealing furnace roller changing mechanism of a stainless steel band processing line, which comprises a bottom plate, an annealing furnace and a support frame are mounted on the bottom plate, the support frame is positioned in the annealing furnace, an annealing roller group is slidably connected in the support frame, and storage mechanisms for storing the annealing roller group are arranged at the left and right ends of the bottom plate; a feeding and discharging mechanism used for moving the annealing roller set is arranged in the annealing furnace, heat preservation assemblies used for maintaining the temperature in the furnace are arranged on the left side and the right side of the annealing furnace, the heat preservation assemblies are provided with automatic opening and closing assemblies in a matched mode, and the automatic opening and closing assemblies are used for opening and closing the heat preservation assemblies. Through the feeding and discharging mechanism, the annealing roller set can automatically enter and exit from the annealing furnace, the annealing roller set can automatically rotate and be replaced on a storage frame in cooperation with a supporting column, a connecting cylinder, a first motor and the storage frame of the storage mechanism, rapid replacement of the annealing roller set is achieved, and therefore the production efficiency is improved, and the operation safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel processing equipment, in particular to an annealing furnace roller changing mechanism for a stainless steel strip processing line. Background Art

[0002] During the processing of stainless steel strip, in order to improve its plasticity and toughness, improve physical and mechanical properties, eliminate internal stress and intergranular corrosion, hardening and cold working effects, it needs to be annealed in an annealing furnace. The working principle of the annealing furnace is to heat the stainless steel strip to the annealing temperature, maintain it for a certain period of time, and finally gradually cool it to room temperature.

[0003] During the annealing process of the stainless steel strip, annealing rollers are installed inside the annealing furnace. The annealing rollers not only carry the task of conveying the stainless steel strip, but also produce relative movement with the steel strip under high temperature environment to make it evenly heated. Annealing rollers are usually made of heat-resistant alloy materials, which have good high temperature resistance, corrosion resistance and wear resistance. However, under the action of high temperature and mechanical friction for a long time, the surface of the annealing roller will wear and oxidize, and at the same time, the oxides, iron filings and impurities in the atmosphere on the surface of the stainless steel strip will also adhere to the roller surface to form nodules. Therefore, the annealing roller needs to be replaced in time after working for a period of time to ensure the smooth progress of the annealing process and the product quality of the stainless steel strip.

[0004] The roll changing device currently used in multi-roll mills usually uses two roll changing rails, which are driven by hydraulic cylinders to complete the operations of roll extraction and installation. In the annealing furnace, this roll changing method requires the installation of two rails when changing the rolls, and then removal after the rolls are changed. The roll changing process is time-consuming and labor-intensive, because the installation and removal of the rails, as well as the extraction and installation of the rolls, are required manually, which increases the operation time and labor intensity. Because the roll changing process involves mechanical operations in a high temperature environment, the slightest carelessness may cause personal injury. In addition, this roll changing method also affects production efficiency, because the long roll changing time means a long downtime of the annealing furnace, which reduces the processing efficiency of stainless steel strips. Summary of the invention

[0005] In order to overcome the disadvantage of low efficiency of manual operation, the present invention provides an automatic roller changing mechanism for an annealing furnace of a stainless steel strip processing line.

[0006] The annealing furnace roller changing mechanism of the stainless steel strip processing line includes a base plate, an annealing furnace and a support frame are installed on the base plate, the support frame is located in the annealing furnace, an annealing roller group is slidably connected in the support frame, storage mechanisms for storing the annealing roller group are arranged at the left and right ends of the base plate, a feeding and discharging mechanism for moving the annealing roller group is arranged in the annealing furnace, insulation components for maintaining the temperature in the furnace are arranged on the left and right sides of the annealing furnace, and the insulation components are cooperated with automatic opening and closing components, and the automatic opening and closing components are used to open and close the insulation components.

[0007] Optionally, the storage mechanism includes a connecting cylinder, the left and right ends of the bottom plate are connected to support columns, the end of the connecting cylinder is rotatably connected to the top of the support column, the other end of the connecting cylinder is close to the annealing furnace, and a first motor is installed on the side of the support column away from the annealing furnace, the output shaft of the first motor is drivingly connected to the connecting cylinder, and the connecting cylinder is connected to a storage rack for storing the annealing roller group.

[0008] Optionally, the feeding and discharging mechanism includes a screw rod and a limit rod, a second motor is installed on the inner wall of the annealing furnace, one end of the screw rod is connected to the output shaft of the second motor, and the other end is connected to the automatic opening and closing assembly, a docking piece is threadedly connected to the screw rod, and the docking piece is extruded and matched with the annealing roller group, one end of the limit rod is connected to one side of the annealing furnace, passes through the other side of the annealing furnace in the middle, and the other end is connected to the automatic opening and closing assembly.

[0009] Optionally, the insulation component includes slide rails, two of the slide rails are arranged on the left and right sides of the outside of the annealing furnace, two insulation plates are slidably connected together on the slide rails on the same side, the insulation plates are provided with anti-collision grooves, and the screw rod and the limit rod pass through the middle of the anti-collision grooves.

[0010] The top of the gear train is connected with the gear of the gear of the gear train, and the end of the gear train is connected with the gear of the gear train at the end of the gear train, and the end of the gear train is connected with the gear of the gear train at the end of the gear train.

[0011] Optionally, it also includes a limiting component for limiting the position of the annealing roller group, the limiting component includes an annular plate, the annular plate is connected to one end of the connecting cylinder close to the supporting column, a baffle is slidably connected inside the annular plate, the baffle is limited by the annealing roller group, a knob is slidably connected to the annular plate, and the knob is rotatably connected to the baffle.

[0012] Optionally, both the support frame and the storage frame are provided with docking grooves, and track wheels are rotatably connected to both sides of the annealing roller group, and the track wheels are rollingly connected to the docking grooves.

[0013] Optionally, guide members are connected to the front and rear sides of the docking member.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. Through the feeding and discharging mechanism, the annealing roller group can automatically enter and exit the annealing furnace. With the support column, connecting cylinder, first motor and storage rack of the storage mechanism, the annealing roller group can automatically rotate and replace on the storage rack, realizing the rapid replacement of the annealing roller group, thereby improving production efficiency and improving the safety of operation.

[0016] 2. The insulation plate of the insulation component and the gear, rack, pulley group, etc. of the automatic opening and closing component can make the insulation plate open and close automatically, which effectively solves the problem of heat loss during the roller changing process and maintains the temperature stability in the annealing furnace, thereby ensuring the continuity of the annealing process and the quality of the stainless steel strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a cross-sectional view of the annealing furnace of the present invention.

[0019] Figure 3 It is a schematic diagram of the connection structure of the storage mechanism, the material feeding and discharging mechanism and the heat preservation component of the present invention.

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0021] Figure 5 It is a schematic diagram of the specific structure of the storage mechanism of the present invention.

[0022] Figure 6 It is a specific structural schematic diagram of the feeding and discharging mechanism of the present invention.

[0023] Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0024] Figure 8 It is a schematic diagram of the connection structure of the thermal insulation board of the present invention.

[0025] Fig. 9 It is a schematic diagram of the specific structure of the gear, rotating part and docking part of the present invention.

[0026] Fig.10 for Figure 5Enlarged view of point C in the middle.

[0027] Fig.11 It is an exploded view of the baffle and the knob of the present invention.

[0028] The markings of the components in the accompanying drawings are as follows: 1: bottom plate, 2: annealing furnace, 3: support frame, 4: annealing roller group, 41: docking groove, 42: track wheel, 5: storage mechanism, 51: support column, 52: connecting cylinder, 53: first motor, 54: storage rack, 6: feeding and discharging mechanism, 61: second motor, 62: screw rod, 63: docking piece, 64: limit rod, 7: insulation component, 71: slide rail, 72: insulation board, 73: anti-collision groove, 8: automatic opening and closing component, 81: mounting frame, 82: pulley group, 83: connecting piece, 84: spline shaft, 85: gear, 86: rack, 87: guide rod, 88: inner spiral sleeve, 89-rotating piece, 810-docking piece, 9: limit assembly, 91: annular plate, 92: baffle, 93: knob, 10: guide piece. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] Embodiment: The annealing furnace roll changing mechanism of the stainless steel strip processing line, such as Figure 1-Figure 9 As shown, it includes a base plate 1, an annealing furnace 2 and a support frame 3. The annealing furnace 2 is installed on the base plate 1. The support frame 3 is connected to the base plate 1, and the support frame 3 is located in the annealing furnace 2. It also includes an annealing roller group 4, a storage mechanism 5, a feeding and discharging mechanism 6, an insulation component 7 and an automatic opening and closing component 8. Two annealing roller groups 4 are slidably connected to the support frame 3. The two annealing roller groups 4 are used at the same time to adapt to the processing of different steel strips, and the installation heights are different. Storage mechanisms 5 for storing the annealing roller groups 4 are arranged at the left and right ends of the base plate 1, and the storage mechanism 5 is adapted to two annealing roller groups 4 of different heights. The annealing furnace 2 is provided with a feeding and discharging mechanism 6 for moving the annealing roller group 4. Insulation components 7 for maintaining the temperature in the furnace are arranged on the left and right sides of the annealing furnace 2. The insulation component 7 is provided with an automatic opening and closing component 8 in conjunction with the insulation component 7. The automatic opening and closing component 8 is used to open and close the insulation component 7.

[0031] like Figure 3 and Figure 5 As shown, the storage mechanism 5 includes a support column 51, a connecting cylinder 52, a first motor 53 and a storage rack 54. The left and right ends of the bottom plate 1 are connected to the support columns 51. The end of the connecting cylinder 52 away from the annealing furnace 2 is rotatably connected to the top of the support column 51. The side of the support column 51 away from the annealing furnace 2 is installed with the first motor 53. The output shaft of the first motor 53 is transmission-connected to the connecting cylinder 52. The connecting cylinder 52 is connected to a storage rack 54 for storing the annealing roller group 4.

[0032] like Figure 2, Figure 5 and Figure 6 As shown, it also includes a track wheel 42 , and both the support frame 3 and the storage frame 54 are provided with a docking groove 41 . The track wheels 42 are rotatably connected to both sides of the annealing roller group 4 , and the track wheels 42 can be rolled and connected in the docking groove 41 .

[0033] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the feeding and discharging mechanism 6 includes a second motor 61, a screw rod 62, a docking piece 63 and a limit rod 64. The second motor 61 is installed on the inner wall of the annealing furnace 2. One end of the screw rod 62 is fixedly connected to the output shaft of the second motor 61, and the other end is rotatably connected to the mounting frame 81 of the automatic opening and closing component 8. The screw rod 62 is threadedly connected with the docking piece 63. The annealing roller group 4 is provided with a block that is snap-fitted with the docking piece 63. The docking piece 63 is snap-fitted with the annealing roller group 4. One end of the limit rod 64 is connected to the annealing furnace 2 and passes through the annealing furnace 2 in the middle. The other end is fixedly connected to the mounting frame 81 of the automatic opening and closing component 8.

[0034] like Figure 2 , Figure 6 and Figure 8 As shown, the insulation component 7 includes a slide rail 71 and an insulation plate 72. Two slide rails 71 are arranged on the left and right sides of the outside of the annealing furnace 2. Two insulation plates 72 are slidably connected on the two slide rails 71 on the same side of the annealing furnace 2. An anti-collision groove 73 is arranged on the adjacent side of the insulation plate 72. After the two insulation plates 72 are attached, the two anti-collision grooves 73 form a hollow circle, and the screw rod 62 and the limit rod 64 pass through the middle of the hollow circle.

[0035] like Figure 2 , Figure 6 , Figure 8 and Fig. 9As shown, the automatic opening and closing assembly 8 includes a mounting frame 81, a pulley group 82, a connecting piece 83, a spline shaft 84, a gear 85, a rack 86, a guide rod 87, an inner spiral sleeve 88, a rotating piece 89 and a docking piece 810. The bottom of the mounting frame 81 is connected to the bottom plate 1, and the end of the screw rod 62 is rotatably connected to the top of the mounting frame 81 and passes through the mounting frame 81. The left and right sides of the annealing furnace 2 are connected with connecting pieces 83, and the connecting piece 83 is rotatably connected with the gear 85. The transmission rod 84 is rotatably connected to the mounting frame 81, and the end of the transmission rod 84 close to the annealing furnace 2 is connected with the gear 85. The top of the mounting frame 81 is rotatably connected with the spline shaft 84, and the end of the spline shaft 84 close to the annealing furnace 2 is rotatably connected with the gear 85, and the end away from the annealing furnace 2 is connected to the end of the screw rod 62 with a pulley group 82. The pulley group 82 consists of two pulleys and a belt. Two insulation plates 72 that can fit each other are located on the same side of the annealing furnace 2, and one A rack 86 is directly connected to the top, and a bent rack 86 is connected to the other side. The two racks 86 are respectively meshed with the top and bottom of the gear 85, so that the movement directions of the two insulation plates 72 are opposite. A guide rod 87 is connected to the bottom of one insulation plate 72, and the guide rod 87 is slidably connected to the other insulation plate 72. An inner spiral sleeve 88 is connected between the mounting frame 81 and the annealing furnace 2. A rotating member 89 is slidably connected to the spline shaft 84, and the rotating member 89 is slidably connected to the inner spiral sleeve 88. A docking member 810 is connected to the side of the gear 85 close to the inner spiral sleeve 88, and the docking member 810 is snap-fitted with the rotating member 89. The docking member 810 is provided with four docking rods that can be inserted into the rotating member 89. The docking rods can be telescopic, and rubber balls are provided at the ends of the docking rods. A slot that cooperates with the docking rod is provided on the rotating member 89, and a protrusion is provided on the rotating member 89, and the protrusion slides along the spiral groove of the inner spiral sleeve 88.

[0036] The annealing furnace 2 works normally to anneal the stainless steel strip. During the work, the quality of the stainless steel strip after annealing is observed. When the annealing roller needs to be replaced, the work is stopped, and the second motor 61 of the feeding and discharging mechanism 6 is turned on to move the annealing roller group 4 in the annealing furnace 2 outward. The old annealing roller group 4 to be replaced is finally placed on the storage rack 54 of the storage mechanism 5, and then the storage rack 54 is rotated to connect the new annealing roller group 4 with the feeding and discharging mechanism 6. The new annealing roller group 4 is replaced into the annealing furnace 2 through the second motor 61. During this period, the heat preservation component 7 keeps the annealing furnace 2 warm through the automatic opening and closing component 8 to reduce the loss of heat. When all the annealing roller groups 4 on the storage rack 54 are used, the staff removes the annealing roller group 4, inspects or recycles it, and puts a new annealing roller group 4 on the storage rack 54;

[0037] At most four annealing roller groups 4 can be placed on the storage rack 54 at the same time. When replacement is needed, the second motor 61 drives the screw rod 62 to rotate, and pushes the docking piece 63 to translate along the limit rod 64 through the threaded connection, thereby pushing the annealing roller group 4 to leave the annealing furnace 2. The annealing roller group 4 rolls on the support frame 3 through the track wheels 42 on both sides, reducing the resistance that the screw rod 62 needs to overcome to move the annealing roller group 4. When entering the storage rack 54, the track wheels 42 of the annealing roller group 4 slide in the storage rack 54, and the track wheels 42 on both sides are The first motor 53 is turned on to drive the connecting cylinder 52, thereby replacing the position of the annealing roller group 4 placed on the storage rack 54, so that the new annealing roller group 4 is docked with the docking piece 63 of the feeding and discharging mechanism 6. After the replacement, the first motor 53 is turned off, the first motor 53 is reversed, and the new annealing roller group 4 is pulled into the annealing furnace 2 to complete the replacement, and the second motor 61 is turned off;

[0038] When the second motor 61 drives the screw rod 62 to rotate, the screw rod 62 drives the spline shaft 84 to rotate through the pulley set 82, thereby driving the rotating member 89 to rotate. At this time, the rotating member 89 is connected to the docking member 810, so that the docking member 810 and the gear 85 also rotate with the spline shaft 84, and the rack 86 meshing with the gear 85 moves to the front and rear sides respectively. The bent rack 86 limits the sliding direction through the connecting member 83 to ensure the meshing with the gear 85, thereby pushing the insulation board 72 to separate to both sides. The insulation board 72 slides on the slide rail 71, and the guide rod 87 follows the movement of one insulation board 72 and slides in the other insulation board 72. During the rotation of the rotating member 89, the rotating member 89 moves along the inner spiral sleeve 88, thereby gradually disengaging from the docking member 810. When the two insulation boards are When the plate 72 is opened and the rotating member 89 is disengaged from the docking member 810, the gear 85 and the rack 86 remain stationary, and the screw 62 continues to rotate to push the annealing roller group 4 to leave the annealing furnace 2. The rotating member 89 moves along the spline shaft 84 under the action of the inner spiral sleeve 88 until the annealing roller group 4 is placed on the storage rack 54. The annealing roller group 4 is then replaced, the screw 62 is reversed, and the rotating member 89 moves along the spline shaft 84 until the annealing roller group 4 enters the annealing furnace 2. The rotating member 89 docks with the docking member 810, and the gear 85 rotates in the opposite direction through the pulley group 82 and the spline shaft 84, and the insulation plate 72 is closed. At this time, the annealing roller group 4 is installed on the support frame 3, and the anti-collision groove 73 set between the two insulation plates 72 forms a round hole, and the limit rod 64 and the screw 62 pass through the middle.

[0039] like Figure 5 , Fig.10 and Fig.11As shown, it also includes a limit assembly 9, which includes an annular plate 91, a baffle 92 and a knob 93. The annular plate 91 is connected to one end of the connecting cylinder 52 close to the supporting column 51. The annular plate 91 is evenly and slidably connected with four baffles 92 in the circumferential direction. The baffles 92 correspond to the positions of the annealing roller group 4 on the storage rack 54. The baffles 92 are limited in position with the annealing roller group 4. A knob 93 is slidably connected to the annular plate 91. The knob 93 is rotatably connected to the baffle 92. The annular plate 91 is provided with a limit circular groove, and the knob 93 is limited in position with the limit circular groove.

[0040] No matter the annealing roller set 4 is pushed out from the annealing furnace 2 by the screw rod 62 or the annealing roller set 4 on the storage rack 54 is replaced, the baffle plate 92 limits the moving position of the annealing roller set 4 and also ensures that the positions of all annealing roller sets 4 remain consistent, so that when the storage rack 54 rotates, the annealing roller set 4 can be successfully docked with the docking piece 63. When taking out the annealing roller set 4, turn the knob 93 to align the side of the knob 93 with the vertical groove of the annular plate 91 and move it in the direction of the connecting cylinder 52 to disengage the baffle plate 92 from the annealing roller set 4, pull out the old annealing roller set 4, and replace it.

[0041] like Figure 6 and Figure 7 As shown, it also includes a guide member 10, and the guide members 10 are connected to the front and rear sides of the docking member 63.

[0042] The annealing roller set 4 rotates with the storage rack 54 , and when docking with the docking piece 63 , the guide pieces 10 on both sides of the docking piece 63 are pressed and matched with the annealing roller set 4 , thereby ensuring that the annealing roller set 4 can dock with the docking piece 63 accurately.

[0043] During the annealing process of the stainless steel strip, the annealing furnace 2 is in working condition. When the annealing roller set 4 needs to be replaced, the system first stops the annealing operation. Subsequently, the second motor 61 of the feeding and discharging mechanism 6 is started, driving the screw 62 to rotate, and pushing the docking piece 63 to translate along the limit rod 64 through the threaded connection. The docking piece 63 squeezes and pushes the annealing roller set 4 along the docking groove 41 on the support frame 3 to roll outward through the track wheel 42 until the annealing roller set 4 is pushed to the storage rack 54 of the storage mechanism 5. At this time, the storage rack 54 rotates under the drive of the first motor 53 through the connecting cylinder 52 so as to align the new annealing roller set 4 with the docking piece 63. During the movement of the annealing roller group 4, the insulation board 72 of the insulation assembly 7 is automatically opened under the action of the automatic opening and closing assembly 8, specifically, the screw rod 62 drives the spline shaft 84 and the gear 85 to rotate through the pulley group 82, and the gear 85 is engaged with the rack 86 on the top of the two insulation boards 72, pushing the insulation boards 72 to slide and separate along the slide rail 71 to both sides, and maintaining the opening state of the insulation boards 72 through the detachable rotating member 89 and the docking member 810. When the annealing roller group 4 is completely moved out of the annealing furnace 2 and placed on the storage rack 54, the first motor 53 drives the connecting cylinder 52 to rotate, so that the new annealing roller group 4 on the storage rack 54 is aligned with the position of the docking member 63. After that, the second motor 61 reverses, and the screw rod 62 pulls the docking piece 63 and the new annealing roller set 4 into the annealing furnace 2 through the threaded connection. At the same time, the pulley set 82 connects the rotating member 89 with the docking piece 810 through the spline shaft 84 and the inner spiral sleeve 88, and the driving gear 85 reverses, so that the insulation plate 72 is automatically closed to maintain the temperature stability in the annealing furnace 2. The baffle 92 is moved by adjusting the knob 93 to fix the position of the annealing roller set 4 on the storage rack 54, ensuring that the annealing roller set 4 is accurately docked with the docking piece 63. During the movement and docking of the annealing roller set 4, the guide 10 ensures the accurate matching of the annealing roller set 4 and the docking piece 63.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An annealing furnace roller changing mechanism for a stainless steel strip processing line, comprising a base plate (1), an annealing furnace (2) and a support frame (3) being mounted on the base plate (1), the support frame (3) being located in the annealing furnace (2), wherein: An annealing roller group (4) is slidably connected inside the support frame (3), storage mechanisms (5) for storing the annealing roller group (4) are arranged at the left and right ends of the bottom plate (1), a material inlet and outlet mechanism (6) for moving the annealing roller group (4) is arranged inside the annealing furnace (2), and insulation components (7) for maintaining the temperature inside the furnace are arranged on the left and right sides of the annealing furnace (2), and the insulation component (7) is provided in conjunction with an automatic opening and closing component (8), and the automatic opening and closing component (8) is used to open and close the insulation component (7).

2. The annealing furnace roller changing mechanism of the stainless steel strip processing line according to claim 1, characterized in that: The storage mechanism (5) comprises a connecting cylinder (52), the left and right ends of the bottom plate (1) are connected to support columns (51), the end of the connecting cylinder (52) is rotatably connected to the top of the support column (51), the other end of the connecting cylinder (52) is close to the annealing furnace (2), a first motor (53) is installed on the side of the support column (51) away from the annealing furnace (2), the output shaft of the first motor (53) is drivingly connected to the connecting cylinder (52), and a storage rack (54) for storing the annealing roller group (4) is connected to the connecting cylinder (52).

3. The annealing furnace roller changing mechanism of the stainless steel strip processing line according to claim 2, characterized in that: The feeding and discharging mechanism (6) comprises a screw rod (62) and a limiting rod (64). A second motor (61) is installed on the inner wall of the annealing furnace (2). One end of the screw rod (62) is connected to the output shaft of the second motor (61), and the other end is connected to the automatic opening and closing component (8). A docking piece (63) is threadedly connected to the screw rod (62), and the docking piece (63) is extruded and matched with the annealing roller group (4). One end of the limiting rod (64) is connected to one side of the annealing furnace (2), passes through the other side of the annealing furnace (2), and the other end is connected to the automatic opening and closing component (8).

4. The annealing furnace roll changing mechanism of the stainless steel strip processing line according to claim 3, characterized in that: The heat preservation component (7) comprises a slide rail (71), two slide rails (71) are arranged on the left and right sides of the outside of the annealing furnace (2), two heat preservation plates (72) are slidably connected together on the slide rail (71) on the same side, and the heat preservation plates (72) are each provided with an anti-collision groove (73), and the screw rod (62) and the limit rod (64) pass through the middle of the anti-collision groove (73).

5. The annealing furnace roller changing mechanism of the stainless steel strip processing line according to claim 4, characterized in that: The automatic opening and closing assembly (8) comprises a mounting frame (81) and a rack (86); the bottom of the mounting frame (81) is connected to the bottom plate (1); the end of the screw rod (62) is rotatably connected to the top of the mounting frame (81); the end of the limit rod (64) is fixedly connected to the top of the mounting frame (81); the side of the annealing furnace (2) is connected to a connecting piece (83); the connecting piece (83) is rotatably connected to a gear (85); the top of the mounting frame (81) is rotatably connected to a spline shaft (84); the end of the spline shaft (84) close to the annealing furnace (2) is rotatably connected to the gear (85); the end away from the annealing furnace (2) and the end of the screw rod (62) are jointly connected to a pulley group (82); the limit rod (64) is fixedly connected to the top of the mounting frame (81); the side of the annealing furnace (2) is connected to a connecting piece (83); the connecting piece (83) is rotatably connected to a gear (85); the top of the mounting frame (81) is rotatably connected to a spline shaft (84); the end of the spline shaft (84) close to the annealing furnace (2) is rotatably connected to the gear (85); the end of the spline shaft (84) away from the annealing furnace (2) is jointly connected to a pulley group (82) with the end of the screw rod (62); The top of the temperature plate (72) is connected to the rack (86), and the two racks (86) on the same side are respectively meshed with the upper and lower sides of the gear (85). The bottom of one of the insulation plates (72) is connected to a guide rod (87), and the guide rod (87) is slidably connected to the other insulation plate (72). An inner spiral sleeve (88) is connected between the mounting frame (81) and the annealing furnace (2). A rotating member (89) is slidably connected to the spline shaft (84), and the rotating member (89) is slidably connected to the inner spiral sleeve (88). A docking member (810) is connected to the side of the gear (85) close to the inner spiral sleeve (88), and the docking member (810) is snap-fitted with the rotating member (89).

6. The annealing furnace roller changing mechanism of the stainless steel strip processing line according to claim 5, characterized in that: It also includes a limiting assembly (9) for limiting the position of the annealing roller group (4), the limiting assembly (9) including an annular plate (91), one end of the connecting cylinder (52) close to the supporting column (51) is connected to the annular plate (91), a baffle (92) is slidably connected inside the annular plate (91), the baffle (92) and the annealing roller group (4) are limited in position, a knob (93) is slidably connected to the annular plate (91), and the knob (93) is rotatably connected to the baffle (92).

7. The annealing furnace roll changing mechanism of the stainless steel strip processing line according to claim 6, characterized in that: The support frame (3) and the storage frame (54) are both provided with docking grooves (41), and track wheels (42) are rotatably connected to both sides of the annealing roller group (4), and the track wheels (42) are rollingly connected in the docking grooves (41).

8. The annealing furnace roll changing mechanism of the stainless steel strip processing line according to claim 7, characterized in that: The butt joint (63) is connected to guide members (10) at both the front and rear sides.

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