Annealing heat treatment equipment for metal strip based on large tension

Abstract

The invention relates to the field of metal heat treatment equipment, in particular to annealing heat treatment equipment for a metal strip based on large tension, which comprises a rack, an unwinding device, an annealing heat treatment device, a winding device, a first tension roller device and a second tension roller device, the first tension roller device, the annealing heat treatment device and the second tension roller device are arranged on the rack to form a three-dimensional double-layer structure so as to reduce the occupied area; the first tension roller device is located at the inlet end of the annealing heat treatment device, the second tension roller device is located at the outlet end of the annealing heat treatment device, and a large-tension pulling structure for workpieces in the heat treatment process is formed. A first guide roller structure is arranged between the output end of the unwinding device and the input end of the first tension roller device, and a second guide roller structure is arranged between the input end of the winding device and the output end of the second tension roller device. The device has the characteristics of good residual stress eliminating effect and small occupied area.

Description

Technical Field

[0001] The invention relates to the field of metal heat treatment equipment, in particular to an annealing heat treatment equipment based on a metal strip with large tension. Background Art

[0002] Metal strips or etched metal strips can be used to make PCB boards, dials of precision instruments, and metal crafts for etching process processing, nameplate production, mold manufacturing, metal decoration engraving, etc., depending on the metal materials used. Since the metal strip or etched metal strip will have residual internal stress after being fully stretched to the required thickness, which affects its subsequent processing performance, it is necessary to eliminate the residual internal stress by annealing. At present, the annealing heat treatment of metal strips or etched metal strips is to directly unfold the metal strip or etched metal strip and place it in a conventional annealing heat treatment equipment for heating and cooling. Due to the structural defects of conventional annealing heat treatment equipment, the pulling tension on the workpiece is small, so there are the following problems: (1) After the workpiece is annealed, the internal stress elimination effect is poor and the flatness is low; (2) The overall length of the annealing heat treatment equipment is long and the floor space is large.

[0003] After searching the Chinese patent announcements, no technical solutions for metal strip annealing heat treatment equipment based on high tension were found to be disclosed in the Chinese patent announcements, although the Chinese patent announcements also disclosed some technical solutions for metal strip heat treatment and etching material metal strip heat treatment, such as: the invention with application number 2021108724425 and name “A device for cooling the weld seam and reducing residual stress of submerged arc welding copper pipe” and the invention with application number 2022234071325 and name “A micro-tension closed-loop controlled air cushion continuous annealing furnace”, application number 2022218392445 and name “A high-efficiency and stable metal strip annealing furnace” and application number 2021227122826, The utility model patent named "Double-sided etching device for lead frame" has a technical solution that can solve the problem of heat treatment of metal strips and has certain technical effects, but it cannot solve the problems in the prior art of annealing equipment for etched metal strips, such as poor elimination of residual stress inside the strip after heat treatment, low flatness, and long overall length of the equipment, which requires a large space. Therefore, it is necessary to provide a metal strip annealing heat treatment equipment based on high tension to solve the problems in the prior art of annealing equipment for metal strips, such as poor elimination of internal stress after annealing of the workpiece, low flatness, and long overall length and large floor space.

[0004] Therefore, the metal strip heat treatment equipment in the prior art has the problems of poor elimination effect of residual stress inside the workpiece, low workpiece flatness, large overall equipment footprint and low production efficiency. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art of annealing equipment for etched metal strips, such as poor elimination of residual stress inside the strip after heat treatment, low flatness, and large overall equipment footprint, and to provide an annealing heat treatment equipment for metal strips based on high tension, which has the characteristics and beneficial effects of good elimination of residual stress inside the workpiece, high workpiece flatness, and small overall equipment footprint.

[0006] In order to achieve the purpose of the present invention, the following technical solutions can be adopted: An annealing heat treatment device based on high-tension metal strip comprises a frame, an unwinding device, an annealing heat treatment device, a winding device, a first tension roller device and a second tension roller device, wherein the unwinding device and the winding device are adjacently arranged on the bottom surface of the frame, and the first tension roller device, the annealing heat treatment device and the second tension roller device are arranged on the frame to form a three-dimensional double-layer structure to reduce the overall footprint of the equipment; the first tension roller device is located at the inlet end of the annealing heat treatment device, and the second tension roller device is located at the outlet end of the annealing heat treatment device to form a high-tension pulling structure for the workpiece during the heat treatment process, so as to eliminate the internal stress of the workpiece by pulling the workpiece with high tension; a first guide roller structure is provided between the output end of the unwinding device and the input end of the first tension roller device, and a second guide roller structure is provided between the input end of the winding device and the output end of the second tension roller device to form a movement steering structure of the workpiece between the upper and lower layers of the frame; a compact arrangement structure is formed by adjacently arranging the unwinding device and the winding device to facilitate operation, save manpower and improve efficiency.

[0007] In order to achieve the purpose of the present invention, the following technical solutions can also be adopted: Furthermore, the first tension roller device has a four-stage input pulling structure, which is composed of a first input pulling unit, a second input pulling unit, a third input pulling unit and a fourth input pulling unit connected in series, and each input pulling unit is connected by a motor and a tension roller, the output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; the second tension roller device has a four-stage output pulling structure, which is composed of a first output pulling unit, a second output pulling unit, a third output pulling unit and a fourth output pulling unit connected in series, and each output pulling unit is connected by a motor and a tension roller, the output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; by adjusting the output pulling tension of the first tension roller device and the second tension roller device to form a high tension pulling traction on the workpiece, the workpiece located in the annealing heat treatment device is pulled by a high tension to make the surface of the workpiece smooth and the internal stress disappear.

[0008] Furthermore, the first tension roller device has a three-stage input pulling structure, which is composed of a first input pulling unit, a second input pulling unit and a third input pulling unit connected in series, each stage of the input pulling unit is composed of a motor and a tension roller connected, the output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; the tension rollers of the first input pulling unit, the second input pulling unit and the third input pulling unit are arranged in a triangle to form a three-stage pulling and adjustment structure; the second tension roller device has a four-stage output pulling structure, which is composed of a first output pulling unit, a second output pulling unit, a third output pulling unit and a fourth output pulling unit. The third output pulling unit and the fourth output pulling unit are connected in series, and each level of the output pulling unit is composed of a motor and a tension roller. The output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; the tension rollers of the first output pulling unit, the second output pulling unit, the third output pulling unit and the fourth output pulling unit are arranged in an "S" shape to form a four-level pulling and adjustment structure; by adjusting the output pulling tension of the first tension roller device and the second tension roller device to form a high-tension pulling traction on the workpiece, the workpiece located in the annealing heat treatment device is subjected to high-tension pulling to make the surface of the workpiece smooth and the internal stress disappear.

[0009] Furthermore, a pressure sensor and a speed sensor are arranged at each motor output shaft or each tension roller in the first tension roller device, and the electrical signal output ends of the pressure sensor and the speed sensor are respectively connected to a signal input end of the control system, and the control system has a plurality of signal output ends, each of the signal output ends is respectively connected to the control signal input end of the motor, forming a closed-loop tension control structure at the unwinding end; a pressure sensor and a speed sensor are arranged at the motor output shaft or the tension roller of the second tension roller device, and the electrical signal output ends of the pressure sensor and the speed sensor are respectively connected to a signal input end of the control system, and the control system has a plurality of signal output ends, each of the signal output ends is respectively connected to the control signal input end of the motor, forming a closed-loop tension control structure at the winding end.

[0010] Furthermore, a deviation correction device is arranged at the input end of the second tension roller device, which is composed of a series structure consisting of the deviation correction device, the second tension roller device, the second guide roller structure and the winding device, with the deviation correction device in front, the second tension roller device and the second guide roller structure in the middle, and the winding device in the back, forming a deviation correction type winding mechanism; the deviation correction device is composed of two groups of rotating rollers arranged at high and low positions, the high position is the rotating roller, and the low position is the adjustment roller, a workpiece position detector is installed between the rotating roller and the deviation correction adjustment roller, and the correction adjustment roller is equipped with an offset electric cylinder to control the angle of the roller correction adjustment roller.

[0011] Furthermore, when adjusting the output tension of the first tension roller device and the second tension roller device, the output tension of the first tension roller device and the second tension roller device is adjusted according to the different types, thicknesses and widths of the workpieces, so that the tension applied to the workpiece is less than or slightly less than the maximum tension that the workpiece can withstand, the maximum tension S=B*T*δ, B is the width of the workpiece, T is the thickness of the workpiece, δ is the tensile strength of the workpiece, which is determined by the type or material of the workpiece.

[0012] Furthermore, when adjusting the pulling tension of the first tension roller device and the second tension roller device, the following settings are made: the width of the workpiece is 500-1200 mm, the thickness of the workpiece is 0.08-0.5 mm, and the tensile strength of the workpiece is 60-100 N / mm 2 .

[0013] Furthermore, the motors arranged in the first tension roller device and the second tension roller device are servo motors, and speed sensors and pressure sensors are arranged in the output shafts of the servo motors to measure the rotation speed N and tension F of each tension roller in the first tension roller device and the second tension roller device in real time, thereby determining the linear speed V = π* N * D of each tension roller in the first tension roller device and the second tension roller device, wherein: D is the diameter of each tension roller in the first tension roller device and the second tension roller device.

[0014] Furthermore, a first sealing roller structure is provided near the inlet end of the annealing heat treatment device, and a second sealing roller structure is provided near the outlet end of the annealing heat treatment device; a welding device is provided near the outlet end of the unwinding device, and a clamping and cutting device is provided near the inlet end of the unwinding device.

[0015] Furthermore, a cleaning and drying device is provided between the welding device and the first guide roller structure, and a passivation and drying device is provided between the cutting device and the second guide roller structure.

[0016] The present invention has the following substantial features and beneficial effects: 1. The present invention arranges the unwinding device and the winding device adjacently on the bottom surface of the frame, and arranges the first tension roller device, the annealing heat treatment device and the first tension roller device on the top of the frame, so as to form a three-dimensional double-layer structure to reduce the overall footprint of the equipment; the first tension roller device is located at the inlet end of the annealing heat treatment device, and the second tension roller device is located at the outlet end of the annealing heat treatment device, so as to form a high tension pulling structure for the workpiece during the heat treatment process, so as to eliminate the internal stress of the workpiece by pulling the workpiece with high tension; the unwinding device and the winding device are arranged adjacently to facilitate operation, save manpower and improve efficiency. Therefore, the problems of poor elimination effect of residual stress inside the strip after heat treatment, low flatness and large overall space occupied by the equipment in the prior art of annealing treatment equipment for etching material metal strips can be solved, and the equipment has the characteristics and beneficial effects of good elimination effect of residual stress inside the workpiece, high flatness of the workpiece and small overall footprint of the equipment.

[0017] 2. Since the present invention sets the equipment as a three-dimensional structure with upper and lower layers, the overall length of the equipment is greatly reduced, thereby being able to reduce the floor space, and has the characteristics and beneficial effects of small floor space, saving plant resources and saving investment.

[0018] 3. Since the unwinding device and the rewinding device are arranged adjacent to each other, the operators of the upper and lower reels can concentrate on one place to perform the unwinding and rewinding operations; therefore, the present invention has the characteristics and beneficial effects of convenient operation, saving manpower and time, and improving efficiency.

[0019] 4. The present invention provides a cleaning and drying device between the unwinding device and the first tension roller device, and a passivation drying device between the second tension roller device and the winding device, thereby adding two functions of cleaning and drying and passivation drying to the device; the cleaning and drying device and the passivation drying device are integrated into the device, which can reduce the number of times the metal strip is wound and unwound, and the cleaning and drying process and the passivation process of the metal strip are integrated into the device, further reducing the floor space of the processing equipment, and effectively improving the processing efficiency of the etching material metal strip. Therefore, it has the characteristics and beneficial effects of complete functions, small floor space, high product quality and high production efficiency.

[0020] 5. The present invention has a welding device between the unwinding device and the cleaning and drying device. When multiple rolls of etching material metal strips are continuously annealed, the welding device can weld and connect the multiple rolls of etching material metal strips. Correspondingly, a clamping and cutting device is provided between the passivation and drying device and the winding device. When the winding device is wound to a certain length, the clamping and cutting device can be used to cut the etching material metal strip and rewind it. Therefore, it has the characteristics and beneficial effects of complete functions, small footprint, high product quality and high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the overall structure of a specific embodiment of the present invention.

[0022] Figure 2 for Figure 1 A schematic structural diagram of the first tension roller device in specific embodiment 1.

[0023] Figure 3 for Figure 1 Schematic diagram of the structure of the second tension roller device of specific embodiment 1.

[0024] Figure 4 for Figure 1 A schematic structural diagram of the first tension roller device of specific embodiment 2.

[0025] Figure 5 for Figure 1 Schematic diagram of the structure of the second tension roller device of specific embodiment 2.

[0026] Figure 6 It is a schematic structural diagram of the annealing heat treatment device and the connection between the components at both ends in the specific embodiment 2 of the present invention. DETAILED DESCRIPTION

[0027] The specific embodiment 1 of the present invention is described below.

[0028] Figures 1 to 3 It is a structural schematic diagram of specific embodiment 1 of the present invention.

[0029] Reference Figure 1-Figure 3 The annealing heat treatment equipment for metal strips based on high tension involved in this specific embodiment 1 includes a frame 1, a reeling device 2, an annealing heat treatment device 4, a reeling device 5, a first tension roller device 31 and a second tension roller device 32. The reeling device 2 and the reeling device 5 are adjacently arranged on the bottom surface of the frame 1, and the first tension roller device 31, the annealing heat treatment device 4 and the second tension roller device 32 are arranged on the top of the frame 1 to form a three-dimensional double-layer structure to reduce the overall footprint of the equipment; the first tension roller device 31 is located at the inlet end of the annealing heat treatment device 4, and the second tension roller device 32 is located at the outlet end of the annealing heat treatment device 4. At the outlet end of the heat treatment device 4, a high-tension pulling structure is formed for the workpiece during the heat treatment process, so that the internal stress of the workpiece is eliminated by pulling the workpiece with high tension; a first guide roller structure 11 is provided between the output end of the unwinding device 2 and the input end of the first tension roller device 31, and a second guide roller structure 12 is provided between the input end of the winding device 5 and the output end of the second tension roller device 32, so as to form a movement steering structure for the workpiece between the upper and lower layers of the frame 1; a compact arrangement structure is formed by adjacently arranging the unwinding device 2 and the winding device 5, so as to facilitate operation, save manpower and improve efficiency.

[0030] In this embodiment: The first tension roller device 31 has a four-stage input pulling structure, which is composed of a first input pulling unit 31-1, a second input pulling unit 31-2, a third input pulling unit 31-3 and a fourth input pulling unit 31-4 connected in series, each input pulling unit is composed of a motor and a tension roller, the output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; the second tension roller device 32 has a four-stage output pulling structure, which is composed of a first output pulling unit 32-1, a second output pulling unit 32-2, a third input pulling unit 31-3 and a fourth input pulling unit 31-4 connected in series, and each input pulling unit is composed of a motor and a tension roller connected, and the output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; The output pulling unit 32-2, the third output pulling unit 32-3 and the fourth output pulling unit 32-4 are connected in series, and each level of the output pulling unit is composed of a motor and a tension roller. The output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; by adjusting the output pulling tension of the first tension roller device 31 and the second tension roller device 32 to form a high tension pulling traction on the workpiece, the workpiece 10 located in the annealing heat treatment device 4 is subjected to a high tension pulling, so that the surface of the workpiece 10 is smooth and the internal stress disappears.

[0031] A pressure sensor and a speed sensor are arranged at each motor output shaft or each tension roller in the first tension roller device 31, and the electrical signal output ends of the pressure sensor and the speed sensor are respectively connected to a signal input end of the control system 13. The control system 13 has a plurality of signal output ends, and each of the signal output ends is respectively connected to the control signal input end of the motor, thereby forming a closed-loop tension control structure at the unwinding end; a pressure sensor and a speed sensor are arranged at the motor output shaft or the tension roller of the second tension roller device 32, and the electrical signal output ends of the pressure sensor and the speed sensor are respectively connected to a signal input end of the control system 13. The control system 13 has a plurality of signal output ends, and each of the signal output ends is respectively connected to the control signal input end of the motor, thereby forming a closed-loop tension control structure at the winding end.

[0032] When adjusting the output tension of the first tension roller device 31 and the second tension roller device 32, the output tension of the first tension roller device 31 and the second tension roller device 32 is adjusted according to the different types, thicknesses and widths of the workpiece 10, so that the tension applied to the workpiece is less than or slightly less than the maximum tension that the workpiece 10 can withstand, and the maximum tension S=B*T*δ, B is the width of the workpiece, T is the thickness of the workpiece, δ is the tensile strength of the workpiece, and is determined by the type or material of the workpiece.

[0033] When adjusting the pulling tension of the first tension roller device 31 and the second tension roller device 32, the following settings are made: the width of the workpiece is 500-1200 mm, the thickness of the workpiece is 0.08-0.5 mm, and the tensile strength of the workpiece is 60-100 N / mm 2 .

[0034] The motors arranged in the first tension roller device 31 and the second tension roller device 32 are servo motors, and a speed sensor and a pressure sensor are arranged in the output shaft of the servo motor to measure the rotation speed N and tension F of each tension roller in the first tension roller device 31 and the second tension roller device 32 in real time, so as to measure the linear speed V =π* N * D of each tension roller in the first tension roller device 31 and the second tension roller device 32, wherein: D is the diameter of each tension roller in the first tension roller device 31 and the second tension roller device 32.

[0035] A first sealing roller structure 41 is provided near the inlet end of the annealing heat treatment device 4 , and a second sealing roller structure 42 is provided near the outlet end of the annealing heat treatment device 4 .

[0036] A welding device 8 is provided at the outlet end near the unwinding device 2 , and a clamping and cutting device 9 is provided at the inlet end near the unwinding device 2 .

[0037] A cleaning and drying device 6 is provided between the welding device 8 and the first guide roller structure 11 , and a passivation and drying device 7 is provided between the cutting device 9 and the second guide roller structure 12 .

[0038] When adjusting the tension of the first tension roller device 31 and the second tension roller device 32, the adjustment settings are made according to the thickness, width and tensile strength δ of the workpiece, that is, the width of the workpiece is 500-1200mm, the thickness of the workpiece is 0.08-0.5mm, and the tensile strength δ is 60-100 Newtons / mm. 2 The maximum tension of the workpiece 10 is adjusted or set according to the numerical range of its width, thickness and tensile strength δ.

[0039] For example: the thickness of the workpiece is 0.08 mm, the width is 500 mm, and the tensile strength is 60 Newtons / mm 2 When the maximum tension of the workpiece 10 is 2400 Newtons (about 245 kilograms), the thickness of the workpiece is 0.09 mm, the width is 600 mm, and the tensile strength is 60 Newtons / mm. 2 When the maximum tension of the workpiece 10 is 3240 Newtons (about 330 kilograms), the thickness of the workpiece is 0.10 mm, the width is 700 mm, and the tensile strength is 60 Newtons / mm. 2 When the maximum tension of the workpiece 10 is 4200 Newtons (about 428 kilograms), the thickness of the workpiece is 0.15 mm, the width is 800 mm, and the tensile strength is 60 Newtons / mm. 2 When the maximum tension of the workpiece 10 is 7200 Newtons (about 735 kilograms), the thickness of the workpiece is 0.20 mm, the width is 900 mm, and the tensile strength is 60 Newtons / mm. 2When the maximum tension of the workpiece 10 is 10800 Newtons (about 1102 kilograms), the thickness of the workpiece is 0.25 mm, the width is 1000 mm, and the tensile strength is 60 Newtons / mm. 2 When the maximum tension of the workpiece 10 is 15000 Newtons (about 1530 kilograms), the thickness of the workpiece is 0.30 mm, the width is 1100 mm, and the tensile strength is 60 Newtons / mm. 2 When the maximum tension of the workpiece 10 is 19800 Newtons (about 2020 kilograms), the thickness of the workpiece is 0.35 mm, the width is 1150 mm, and the tensile strength is 60 Newtons / mm. 2 When the maximum tension of the workpiece 10 is 24150 Newtons (about 2464 kilograms), the thickness of the workpiece is 0.40 mm, the width is 1200 mm, and the tensile strength is 60 Newtons / mm. 2 When the maximum tension of the workpiece 10 is 28800 Newtons (about 2939 kilograms), the thickness of the workpiece is 0.45 mm, the width is 1200 mm, and the tensile strength is 60 Newtons / mm. 2 When the maximum tension of the workpiece 10 is 32400 Newtons (about 3306 kilograms), the thickness of the workpiece is 0.5 mm, the width is 1200 mm, and the tensile strength is 60 Newtons / mm. 2 When the maximum tension of the workpiece 10 is 36000 Newtons (about 3673 kilograms), the maximum tension of the workpiece 10 is 36000 Newtons (about 3673 kilograms). Note: The values ​​in brackets are converted based on the relationship that the gravity of a 1-ton object on the earth is 9800 Newtons.

[0040] In addition, in this embodiment, the maximum pulling tension formed by the first tension roller device 31 and the second tension roller device 32 can reach 8000 kg. According to the thickness, width and tensile strength δ of the workpiece, the maximum tension of the workpiece 10 can be adjusted by the maximum pulling tension formed by the first tension roller device 31 and the second tension roller device 32.

[0041] The working principle of this embodiment is described in detail below: Reference Figure 1-Figure 3The unwinding mechanism is composed of an unwinding device 2, a first guide roller structure 11 and a first tension roller device 31. The output end of the unwinding device 2 is connected to the input end of the first tension roller device 31 through the first guide roller structure 11; the winding mechanism is composed of a winding device 5, a second guide roller structure 12 and a second tension roller device 32. The output end of the second tension roller device 32 is connected to the input end of the winding device 5 through the second guide roller structure 12; after the workpiece 10 is released by the unwinding device 2, it enters the input end of the first tension roller device 31 through the first guide roller structure 11, forming a workpiece The unwinding end tension control structure; after the workpiece is heat treated by the annealing heat treatment device 4, it passes through the second tension roller device 32 and the second guide roller structure 12 in sequence to enter the input end of the winding device 5, forming a winding end tension control structure for the workpiece 10; the tension control mechanism composed of the unwinding end tension control structure and the winding end tension control structure controls the tension and speed of the workpiece; after the workpiece 10 is transported to the input end of the winding end tension control structure, the winding tension control structure controls the tension and speed of the workpiece, and the tension control mechanism controls the tension of the workpiece during the transportation process to be constant.

[0042] The frame 1 is used to separate the annealing treatment equipment into a double-layer structure, wherein the annealing heat treatment device 4 is arranged on the upper layer of the frame 1, and the starting unwinding device 2 and the ending winding device 5 as the processing process are adjacently arranged on the lower layer of the frame 1, thereby greatly reducing the overall length of the equipment and reducing the footprint of the equipment. At the same time, the starting and ending positions of the processing process are adjacent, which is convenient for operators to perform rolling up and down operations, as well as convenient for transferring rolled workpieces 10 to be annealed and after annealing. Among them, the first tension roller device 31 and the second tension roller device 32 are arranged at both ends of the annealing heat treatment device 4, and the two tension roller devices are arranged on the upper layer of the frame 1. The workpiece 10 is pulled and pulled by the first tension roller device 31 and the second tension roller device 32, and the workpiece 10 located in the annealing heat treatment device 4 is pulled with a large tension by adjusting the parameters of the first tension roller device 31 and the second tension roller device 32, so that the workpiece 10 undergoing annealing can receive a large tension, and the tension can be adjusted according to the material and The thickness and width are adjusted and set, and the parameters of the first tension roller device 31 and the second tension roller device 32 are set and adjusted. In order to achieve a good high-tension pulling effect, the tension of the workpiece 10 can be 2400-36000 Newtons (about 0.245-3.67 tons). It needs to be adjusted and set according to the thickness, width and tensile strength δ of the workpiece, that is, the width of the workpiece is 500-1200mm, the thickness of the workpiece is 0.08-0.5mm, and the tensile strength δ is 60-100 Newtons / mm 2The maximum tension of the workpiece 10 is adjusted or set according to the numerical range of its width, thickness and tensile strength δ. The tension (pulling force) of the workpiece 10 can be detected by the tension detection sensors in the first tension roller device 31 and the second tension roller device 32, and the parameters of the first tension roller device 31 and the second tension roller device 32 are set to meet the above conditions. By applying a large tension to both ends of the workpiece 10 undergoing annealing, the flatness of the workpiece 10 after annealing can be effectively improved, and the residual stress remaining in the workpiece 10 after the stretching treatment can be evenly and fully released, thereby improving the quality of the metal strip material and facilitating the subsequent precision machining of the workpiece 10. Specifically, since the workpiece 10 needs to be heated and cooled during the annealing process, in order to improve the temperature stability in the annealing heat treatment device 4, sealing roller devices 41 are provided between the two ends of the annealing heat treatment device 4 and the first tension roller device 31 and the second tension roller device 32. The use of the sealing roller device can ensure that the temperature in the annealing heat treatment device 4 is kept stable while ensuring the normal transmission of the workpiece 10, thereby ensuring the normal annealing of the workpiece 10. The sealing roller device is composed of a first sealing roller structure 41 and a second sealing roller structure 42.

[0043] A first guide roller structure 11 is provided between the unwinding device 2 and the first tension roller device 31, and a second guide roller structure 12 is provided between the winding device 5 and the second tension roller device 32. Specifically, by arranging the first guide roller structure 11 and the second guide roller structure 12 at the upper and lower layers at both ends of the frame 1, the workpiece 10 (etching material metal strip) can be transferred between the upper and lower layers of the frame 1.

[0044] In addition, since the overall length of the annealing treatment equipment is longer than the length of the unwinding device 2 and the winding device 5, in order to make full use of the lower space of the frame 1, a cleaning and drying device 6 is provided between the unwinding device 2 and the first tension roller device 31, and a passivation drying device 7 is provided between the second tension roller device 32 and the winding device 5. Since a large amount of treatment liquid will adhere to the surface of the metal strip after the stretching treatment, it needs to be cleaned and dried, and the metal strip after the annealing treatment needs to be coated with a passivation liquid to prevent its surface from being oxidized. Therefore, the cleaning and drying device 6 and the passivation drying device 7 can be integrated into the present device, which can reduce the number of times the metal strip is unwound and wound, and the cleaning and drying process and the passivation process of the metal strip are integrated into the present device together, further reducing the floor space of the processing equipment, and effectively improving the processing efficiency of the workpiece 10 (etching material metal strip). A welding device 8 is provided between the unwinding device 2 and the cleaning and drying device 6. When multiple rolls of workpieces 10 (etching material metal strips) are continuously annealed, the welding device 8 can weld and connect the multiple rolls of workpieces 10 (etching material metal strips). Correspondingly, a clamping and cutting device 9 is provided between the passivation and drying device 7 and the winding device 5. When the winding device 5 is wound to a certain length, the clamping and cutting device 9 can be used to cut the workpiece 10 (etching material metal strip) and rewind it.

[0045] The annealing heat treatment device 4 can adopt the annealing heat treatment furnace structure of conventional technology, the unwinding device 2 can adopt the unwinding structure of conventional technology, the winding device 5 can adopt the winding structure of conventional technology, the first sealing roller structure 41 and the second sealing roller structure 42 can adopt the sealing roller structure of conventional technology, the cleaning and drying device 6 can adopt the cleaning and drying device of conventional technology, the passivation drying device 7 can adopt the passivation drying device of conventional technology, the welding device 8 can adopt the welding structure of conventional technology, the pinching and cutting device 9 can adopt the pinching and cutting structure of conventional technology, the first guide roller structure 11 and the second guide roller structure 12 can adopt the guide roller structure of conventional technology, the control system 13 can adopt the PLC control system of conventional technology, the first tension roller device 31 and the second tension roller device 32 can adopt the tension roller structure of two or more than two levels of conventional technology. The servo motor can adopt the servo motor of conventional technology, the speed sensor can adopt the speed sensor structure of conventional technology, and the pressure sensor can adopt the pressure sensor structure of conventional technology.

[0046] The following is a description of a second specific embodiment of the present invention.

[0047] Reference Figure 1 , Figure 4 , Figure 5 and Figure 6 , the characteristics of specific embodiment 2 of the present invention are: The first tension roller device 31 has a three-stage input pulling structure, which is composed of a first input pulling unit 31-1, a second input pulling unit 31-2 and a third input pulling unit 31-3 connected in series, and each input pulling unit is composed of a motor and a tension roller connected, and the output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; the tension rollers of the first input pulling unit 31-1, the second input pulling unit 31-2 and the third input pulling unit 31-3 are arranged in a triangle to form a three-stage pulling and adjustment structure; the second tension roller device 32 has a four-stage output pulling structure, which is composed of a first output pulling unit 32-1, a second output pulling unit 32-2, a third output pulling unit The output pulling unit 32-3 and the fourth output pulling unit 32-4 are connected in series, and each level of the output pulling unit is composed of a motor and a tension roller. The output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; the tension rollers of the first output pulling unit 32-1, the second output pulling unit 32-2, the third output pulling unit 32-3 and the fourth output pulling unit 32-4 are arranged in an "S" shape to form a four-level pulling and adjustment structure; by adjusting the output pulling tension of the first tension roller device 31 and the second tension roller device 32 to form a high tension pulling traction on the workpiece, the workpiece 10 located in the annealing heat treatment device 4 is subjected to high tension pulling to make the surface of the workpiece 10 smooth and the internal stress disappear.

[0048] A pressure sensor and a speed sensor are provided at the motor output shaft or the tension roller in the first tension roller device 31, and the electrical signal output ends of the pressure sensor and the speed sensor are respectively connected to a signal input end of the control system 13, and a signal output end of the control system 13 is connected to the control signal input end of the motor, forming a closed-loop tension control structure at the unwinding end. A pressure sensor and a speed sensor are provided at the motor output shaft or the tension roller of the second tension roller device 32, and the electrical signal output ends of the pressure sensor and the speed sensor are respectively connected to a signal input end of the control system 13, and a signal output end of the control system 13 is connected to the control signal input end of the motor, forming a closed-loop tension control structure at the winding end.

[0049] A deviation-correcting device 14 is arranged at the input end of the second tension roller device 32, and a series structure is formed by the deviation-correcting device 14, the second tension roller device 32, the second guide roller structure 12 and the winding device 5, wherein the deviation-correcting device 14 is in the front, the second tension roller device 32 and the second guide roller structure 12 are in the middle, and the winding device 5 is in the back, forming a deviation-correcting winding mechanism; the deviation-correcting device 14 is composed of two groups of rollers arranged at high and low positions, the high position is the rotating roller 14-1, and the low position is the adjusting roller 14-2, a workpiece position detector is installed between the rotating roller 14-1 and the deviation-correcting adjustment roller 14-2, and an offset electric cylinder is installed on the correction adjustment roller 14-2 to control the angle of the roller correction adjustment roller.

[0050] The rest is the same as in Specific Example 1.

[0051] The workpiece 10 suitable for processing in the present invention may be a common metal strip or an etched metal strip, and the common metal strip or the etched metal strip may be a copper strip, a steel strip, a stainless steel strip, an alloy strip or other metal strips.

[0052] The above are only preferred embodiments of the present invention, and are not intended to limit the scope of use of the present invention. Therefore, any equivalent changes made to the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An annealing heat treatment device for metal strips based on high tension, characterized in that: The invention comprises a frame (1), an unwinding device (2), an annealing heat treatment device (4), a rewinding device (5), a first tension roller device (31) and a second tension roller device (32); the unwinding device (2) and the rewinding device (5) are arranged adjacent to each other on the bottom surface of the frame (1); the first tension roller device (31), the annealing heat treatment device (4) and the second tension roller device (32) are arranged on the top of the frame (1), forming a three-dimensional double-layer structure to reduce the overall footprint of the equipment; the first tension roller device (31) is located at the inlet end of the annealing heat treatment device (4); The second tension roller device (32) is located at the outlet end of the annealing heat treatment device (4), forming a high-tension pulling structure for the workpiece during the heat treatment process, so as to eliminate the internal stress of the workpiece by pulling the workpiece with high tension; a first guide roller structure (11) is provided between the output end of the unwinding device (2) and the input end of the first tension roller device (31), and a second guide roller structure (12) is provided between the input end of the winding device (5) and the output end of the second tension roller device (32), so as to form a movement steering structure for the workpiece between the upper and lower layers of the frame (1).

2. The annealing heat treatment equipment for metal strips with high tension according to claim 1, characterized in that: The first tension roller device (31) has a four-stage input pulling structure, which is composed of a first input pulling unit (31-1), a second input pulling unit (31-2), a third input pulling unit (31-3) and a fourth input pulling unit (31-4) connected in series, each stage of the input pulling unit is composed of a motor and a tension roller connected, the output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; The second tension roller device (32) has a four-stage output pulling structure, which is composed of a first output pulling unit (32-1), a second output pulling unit (32-2), a third output pulling unit (32-3) and a fourth output pulling unit (32-4) connected in series, each stage of the output pulling unit is composed of a motor and a tension roller connected, the output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; by adjusting the output pulling tension of the first tension roller device (31) and the second tension roller device (32) to form a high tension pulling traction on the workpiece, the workpiece (10) located in the annealing heat treatment device (4) is subjected to a high tension pulling, so that the surface of the workpiece (10) is smooth and the internal stress disappears.

3. The annealing heat treatment equipment for metal strips with high tension according to claim 1, characterized in that: The first tension roller device (31) has a three-stage input pulling structure, which is composed of a first input pulling unit (31-1), a second input pulling unit (31-2) and a third input pulling unit (31-3) connected in series, each input pulling unit is composed of a motor and a tension roller connected, the output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; the tension rollers of the first input pulling unit (31-1), the second input pulling unit (31-2) and the third input pulling unit (31-3) are arranged in a triangle to form a three-stage pulling and adjustment structure; the second tension roller device (32) has a four-stage output pulling structure, which is composed of a first output pulling unit (32-1), a second output pulling unit (32-2), a third input pulling unit (32-3) and a fourth output pulling unit (32-4). The output pulling unit (32-3) and the fourth output pulling unit (32-4) are connected in series, each level of the output pulling unit is composed of a motor and a tension roller, the output shaft of the motor is connected to the input end of the tension roller, and the tension roller is covered with a friction plastic layer to form a friction structure; the tension rollers of the first output pulling unit (32-1), the second output pulling unit (32-2), the third output pulling unit (32-3) and the fourth output pulling unit (32-4) are arranged in an "S" shape to form a four-level pulling and adjustment structure; by adjusting the output pulling tension of the first tension roller device (31) and the second tension roller device (32) to form a high tension pulling traction on the workpiece, the workpiece (10) located in the annealing heat treatment device (4) is subjected to high tension pulling, so that the surface of the workpiece (10) is flat and the internal stress disappears.

4. The annealing heat treatment equipment for metal strips with high tension according to claim 2 or 3, characterized in that: A pressure sensor and a speed sensor are arranged at each motor output shaft or each tension roller in the first tension roller device (31), and the electrical signal output ends of the pressure sensor and the speed sensor are respectively connected to a signal input end of the control system (13). The control system (13) has a plurality of signal output ends, and each of the signal output ends is respectively connected to the control signal input end of the motor, thereby forming a closed-loop tension control structure at the unwinding end; a pressure sensor and a speed sensor are arranged at the motor output shaft or the tension roller of the second tension roller device (32), and the electrical signal output ends of the pressure sensor and the speed sensor are respectively connected to a signal input end of the control system (13). The control system (13) has a plurality of signal output ends, and each of the signal output ends is respectively connected to the control signal input end of the motor, thereby forming a closed-loop tension control structure at the rewinding end.

5. The annealing heat treatment equipment for metal strips with high tension according to claim 4, characterized in that: A deflection correction device (14) is arranged at the input end of the second tension roller device (32), and a series structure is formed by the deflection correction device (14), the second tension roller device (32), the second guide roller structure (12) and the winding device (5), wherein the deflection correction device (14) is in the front, the second tension roller device (32) and the second guide roller structure (12) are in the middle, and the winding device (5) is in the rear, thereby forming a deflection correction type winding mechanism; the deflection correction device (14) is composed of two groups of rollers arranged at high and low positions, the high position being the deflection roller (14-1), and the low position being the adjustment roller (14-2), a workpiece position detector being arranged between the deflection correction roller (14-1) and the deflection correction adjustment roller (14-2), and an offset electric cylinder being arranged on the correction adjustment roller (14-2) to control the angle of the roller correction adjustment roller.

6. The annealing heat treatment equipment for metal strips with high tension according to claim 4, characterized in that: When adjusting the output tension of the first tension roller device (31) and the second tension roller device (32), the output tension of the first tension roller device (31) and the second tension roller device (32) are adjusted according to the different types, different thicknesses and different widths of the workpiece (10), so that the tension applied to the workpiece is less than or slightly less than the maximum tension that the workpiece (10) can be subjected to, the maximum tension S=B*T*δ, B is the width of the workpiece, T is the thickness of the workpiece, and δ is the tensile strength of the workpiece, which is determined by the type or material of the workpiece.

7. The annealing heat treatment equipment for metal strips under high tension according to claim 6, characterized in that: When adjusting the pulling tension of the first tension roller device (31) and the second tension roller device (32), the following settings are made: the width of the workpiece is 500-1200 mm, the thickness of the workpiece is 0.08-0.5 mm, and the tensile strength δ of the workpiece is 60-100 Newtons / mm 2 .

8. The annealing heat treatment equipment for metal strips with high tension according to claim 4, characterized in that: The motors arranged in the first tension roller device (31) and the second tension roller device (32) are servo motors, and a speed sensor and a pressure sensor are arranged in the output shaft of the servo motor to measure the rotation speed N and tension F of each tension roller in the first tension roller device (31) and the second tension roller device (32) in real time, thereby measuring the linear speed V = π * N * D of each tension roller in the first tension roller device (31) and the second tension roller device (32), wherein D is the diameter of each tension roller in the first tension roller device (31) and the second tension roller device (32).

9. The annealing heat treatment equipment for metal strips with high tension according to claim 4, characterized in that: A first sealing roller structure (41) is provided near the inlet end of the annealing heat treatment device (4), and a second sealing roller structure (42) is provided near the outlet end of the annealing heat treatment device (4); a welding device (8) is provided near the outlet end of the unwinding device (2), and a clamping and cutting device (9) is provided near the inlet end of the unwinding device (2).

10. The annealing heat treatment equipment for metal strips under high tension according to claim 4, characterized in that: A cleaning and drying device (6) is provided between the welding device (8) and the first guide roller structure (11), and a passivation and drying device (7) is provided between the cutting device (9) and the second guide roller structure (12).

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