Rewinding, welding and testing all-in-one machine

Abstract

The invention relates to the technical field of strip processing, in particular to a strip rewinding, welding and testing all-in-one machine which comprises a machine body, an operation table top is arranged on the machine body, the operation table top is arranged in the middle of the machine body, and the operation table top is horizontally arranged in the left-right direction of a strip conveying track. The welding part is arranged at the left end of the middle of the machine body through the working table top. According to the invention, the belt material is directionally conveyed on the machine body, and the welding part and the testing part are arranged along the conveying direction of the belt material, so that the welding operation and the testing operation can be integrally completed, the problem that the welding and testing processes of the belt material need to be moved is solved, and the benefit and the stability of equipment are greatly improved; and by applying power output equipment and combining with a graphical processing method, whether the resistance of a welding point meets the requirement is calculated, and the beneficial effects that equipment is simplified, integrated operation is achieved, the to-be-welded strip is precisely regulated and controlled to guarantee the welding precision, and the structural damage of the strip is reduced through liquid nitrogen type temperature control testing are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of strip processing, and in particular to a rewinding welding and testing integrated machine. Background Art

[0002] Currently, the most commonly used joints in the industry are still brazed joints, that is, solder is used to weld the two ends of the superconducting tape together. The quality of the joint is characterized by the joint resistance. Different tapes have different interface resistances due to different materials. Therefore, when other conditions are the same, the joint resistance will also be very different.

[0003] At present, the main welding methods include manual welding and machine or tool welding: as a repetitive operation in a large number of industries, in order to ensure stability, it is still hoped to use machines or tooling for welding, because the manual operation of using an electric soldering iron is very dependent on personal ability, and it is believed that it is extremely difficult to ensure the welding quality due to large differences in operation. Therefore, machine welding is mostly used under existing conditions, such as a superconducting strip welding device disclosed in announcement number CN207606425U, which automatically realizes the separation and combination of the welding head and completes spot welding through the joint action of electromagnetic components, springs and movable welding heads, and has high welding quality and efficiency; and during the welding process, the transmission rod is extended and retracted under the action of the power component, so as to pass the ball joint structure belt The movable lower boss moves freely in the plane, thereby driving the welding head to move freely on the plane where it is located. However, due to the size difference of the strips to be welded, it is extremely difficult to achieve accurate docking at the welding position. The flatness of the strips varies. The welding pressure head rigidly connected by the welding equipment cannot ensure that the welding joints of each strip are evenly stressed, and the quality and strength of the joints cannot be guaranteed to be consistent. Whether the welding of two sections of strips is qualified requires the control and manual monitoring of multiple parameters. Traditional button operations are too cumbersome and prone to errors, which can easily lead to uneven welds during welding. In particular, the existing spot welding methods use a unified high-temperature technology, which cannot control the temperature of the welding strip in real time, and can easily cause excessive deformation of the welding part of the strip.

[0004] Whether the welding of two sections of strips is qualified requires the joint efforts of rewinding equipment and testing equipment. The operation of multiple devices is not only inconvenient to operate, but also occupies a large area. For example, a superconducting strip testing device disclosed in announcement number CN209043947U connects the lead contact and the superconducting strip by magnetic attraction, and can adjust the distance between the two lead contacts conveniently and quickly without damaging the superconducting strip. This solves the problem of large uncertainty in measuring the distance between welds and irreversible damage to the superconducting strip caused by welding in the prior art. However, due to the limitation of the positioning function, it is difficult to be used in conjunction with the strip welding device, so the efficiency of strip welding and testing is seriously reduced. In addition, in the test device made of metal material, the strip is connected by magnetic attraction, which is easily affected by the magnetism of the device and the strip itself, and the stability of the strip cannot be guaranteed. The test equipment cannot output a stable current and monitor an accurate voltage. The joint resistance cannot be accurately calculated and the unstable current can easily damage the strip, which not only increases the difficulty of the test, but also cannot guarantee the reliability of the welding test results. Summary of the invention

[0005] The present invention provides a rewind welding test to solve the defects in the prior art that it is difficult to limit and adjust the strip, which makes it difficult to accurately connect the strip and easily affects the welding quality and the test results.

[0006] On the one hand, the present invention provides a rewinding welding test integrated machine, comprising a machine body, on which a work surface is arranged, the work surface is arranged in the middle of the machine body, and the work surface is arranged horizontally along the left and right directions of the strip conveying track; The left and right outer walls of the machine body are respectively provided with a strip reel and a traction reel for winding the strip, and the strip moves from the strip reel to the traction reel; The working table is provided with: A welding part, which is arranged at the left end of the middle part of the machine body through an operating table, and is used to perform temperature-controlled welding operations on the strip passing through the operating table; The testing part is arranged at the right end of the middle part of the machine body through an operating table, and the testing part is used to perform liquid nitrogen testing on the strip after the welding operation.

[0007] On the other hand, the welding part corresponds to the testing part horizontally, and a cantilever bracket corresponding to the traction disk is arranged on the right side of the machine body.

[0008] On the other hand, the welding part includes a welding base installed on the work surface, and a welding bracket is connected to the rear side of the welding base: The welding base is provided with a clamping cylinder, the welding base is provided with a thin air claw driven by the clamping cylinder, and the welding base is provided with a welding pad and a pad; A Doppler electric cylinder is installed on the welding bracket, and a threaded extension head is integrally connected to the output end of the Doppler electric cylinder, and a press-fit upper connecting plate is installed on the threaded extension head, and a press-fit middle connecting plate is connected to the lower end of the press-fit upper connecting plate, and a pressure sensor is arranged in the press-fit middle connecting plate, and a press-fit lower connecting plate matching the pressure sensor is movably connected at the lower end of the press-fit middle connecting plate, and a welding pressure head is connected to the lower end of the press-fit lower connecting plate, and a heater and a temperature sensor are arranged in the welding pressure head, and a gas supply mechanism is arranged on the welding pressure head.

[0009] On the other hand, the press-fit upper connecting plate is connected with two guide shafts that movably penetrate the welding bracket; A telescopic adjustment mechanism is arranged between the press-fit middle connecting plate and the press-fit lower connecting plate.

[0010] On the other hand, the gas transmission mechanism consists of a stainless steel pipe joint, a T-type three-way joint and a copper pipe, and the stainless steel pipe joint is connected to the press-fit lower connecting plate, and two copper pipes are assembled and connected to the stainless steel pipe joint through a T-type three-way joint.

[0011] On the other hand, the telescopic adjustment mechanism includes a first guide column connected to the lower end of the connecting plate in the press-fitting, and a matching first compression spring is arranged on the first guide column.

[0012] On the other hand, the testing part includes a test plate mechanism, a lifting mechanism and a test data analysis system. The lifting mechanism is arranged on a work surface. The test plate mechanism and the test data analysis system are arranged through the lifting mechanism. The test plate mechanism is used to fix and drive the strip to contact voltage and current leads. The lifting mechanism is used to contact the strip and immerse the strip in liquid nitrogen during the lifting process. The test data analysis system is used to calculate the resistance value of the welding joint.

[0013] On the other hand, the test plate mechanism includes a quick caliper and a pressure block, the quick caliper is connected to a second guide column, the second guide column is sleeved with a second compression spring, and the second compression spring is connected to a spring copper block.

[0014] On the other hand, the lifting mechanism includes a liquid nitrogen box installed on the machine body through a work surface, a servo motor is arranged on the work surface, and a linear module for installing the liquid nitrogen box is connected to the output end of the servo motor.

[0015] On the other hand, the test data analysis system consists of an industrial computer, a magnet power supply, a voltmeter, and a display. The industrial computer communicates with the power supply and the voltmeter and is used to continuously collect real-time data. The collected data is placed in a data array and is used to fit the slope curve of all data.

[0016] The integrated rewinding welding and testing machine provided by the present invention can convey the strip in a directional manner on the machine body, and set a welding part and a testing part along the conveying direction of the strip, so that the welding operation and the testing operation can be completed in one piece, thereby solving the problem that the machine needs to be moved for the strip welding and testing processes.

[0017] The present invention has the "one-stop" operation functions of superconducting strip reeling, welding and testing, and the operation is simple and the equipment is miniaturized; the welding pressure head of the welding part is automatically calibrated and leveled, and the strip welding joint is evenly stressed, so that the quality and strength of the strip welding joint are consistent, and the resistance and current of the strip itself are also less affected; the welding pressure, welding temperature, welding time and welding process are accurately controlled, and the automatic and rapid welding and cooling forming of the strip joint can be realized, which reduces the participation of manual labor and greatly improves the efficiency and stability of the equipment; the power output device is used, the output current is modulated by software to achieve stable linear current output, and then a high-precision instrument is used to monitor the voltage of the welding point, and combined with a graphical processing method, it is calculated whether the resistance of the welding point meets the requirements, so as to achieve the beneficial effects of simple equipment, integrated operation, accurate regulation of the strip to be welded to ensure welding accuracy, and liquid nitrogen temperature control test to reduce the damage to the strip structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is one of the schematic diagrams of the rewinding welding and testing integrated machine provided in an embodiment of the present invention; Figure 2 It is a front view structural diagram of the welding part of the rewind welding and testing integrated machine provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of the rear view structure of the welding part of the rewind welding and testing integrated machine provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of a left side cross-section of a welding portion of a rewinding welding and testing integrated machine provided by an embodiment of the present invention; Figure 5 The present invention Figure 4 A schematic diagram of the structure enlargement of part A; Figure 6 It is a schematic diagram of a left-side bottom view of a welding part of a rewinding welding and testing integrated machine provided by an embodiment of the present invention; Figure 7 The present invention Figure 6 A schematic diagram of the structure of part B in the middle is enlarged; Figure 8It is a left-side structural schematic diagram of the welding part of the rewind welding and testing integrated machine provided by an embodiment of the present invention; Fig. 9 It is a front sectional top view of the welding part of the rewind welding and testing integrated machine provided by an embodiment of the present invention; Fig.10 The present invention Fig. 9 The enlarged schematic diagram of the structure of part C in the middle; Fig.11 It is a schematic cross-sectional structural diagram of a welding part of a rewinding welding and testing integrated machine provided by an embodiment of the present invention; Fig.12 It is a schematic diagram of the structure of the gas delivery mechanism of the rewind welding and testing integrated machine provided by an embodiment of the present invention; Fig.13 It is a front view structural schematic diagram of the testing part of the rewinding welding test integrated machine provided by an embodiment of the present invention; Fig.14 It is a rear view structural diagram of the testing part of the rewinding welding test integrated machine provided by an embodiment of the present invention; Fig.15 It is a left-side structural schematic diagram of a test unit of a rewinding welding test integrated machine provided in an embodiment of the present invention; Fig.16 The present invention Fig.15 A schematic diagram of the enlarged structure of part D in FIG. Fig.17 It is a schematic diagram of strip material test data analysis of the present invention.

[0020] Reference numerals: 1. Machine body; 2. Work surface; 3. Cantilever bracket; 4. Welding part; 401. Welding base; 402. Welding bracket; 403. Doppler electric cylinder; 404. Clamping cylinder; 405. Thin air claw; 406. Welding pad; 407. Pad; 408. Thread extension head; 409. Press-fit upper connecting plate; 410. Press-fit middle connecting plate; 411. Pressure sensor; 412. Press-fit lower connecting plate; 413. Guide shaft; 414. First guide column; 415. First compression spring; 416. Heater; 417. Temperature sensor; 418, gas transmission mechanism; 41801, stainless steel pipe joint; 41802, T-type universal joint; 41803, copper pipe; 5. Testing department; 501, test plate mechanism; 50101, quick caliper; 50102, second guide column; 50103, second compression spring; 50104, pressure block; 50105, spring copper block; 502, lifting mechanism; 50201, liquid nitrogen box; 50202, servo motor; 50203, linear module; 503. Test data analysis system. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Combine the following Figure 1-Figure 17 Describing the invention: Figure 1 This is one of the schematic diagrams of the rewinding welding and testing integrated machine provided in an embodiment of the present invention.

[0023] like Figure 1 As shown, the rewinding welding and testing integrated machine provided in the embodiment of the present invention mainly includes a body 1, on which a work surface 2 is arranged. The work surface 2 is arranged in the middle of the body 1, and the work surface 2 is horizontally arranged along the left and right directions of the strip conveying track. The work surface 2 provides a welding and testing working position for the strip, and at the same time provides an installation position for the welding part 4 and the testing part 5.

[0024] A strip disk and a traction disk for winding the strip are respectively arranged on the outer walls on the left and right sides of the machine body 1, and the strip moves from the strip disk to the traction disk. It should be noted that installation positions for rotatably installing the strip disk and the traction disk are arranged on the left and right sides of the machine body 1, and encoders and guide wheels for supporting the strip are synchronously arranged. A driver for driving the traction disk to rotate is arranged at the right side of the machine body 1, and preferably a motor drives the traction disk to rotate, so that the strip on the strip disk is pulled and wound onto the traction disk. In this process, the strip passes through the working table 2 in an orderly manner, and passes through the welding part 4 for welding processing and the testing part 5 for testing operations in turn. The two guide wheels drive the encoder to rotate, provide an accurate meter recording function, and avoid the situation where the tension fluctuates during the strip transportation process; and it can avoid the problem of the strip being unable to adapt to the working conditions to realize the forward and reverse switching arbitrarily due to inaccurate meter recording, and it can also avoid the situation where the angle between the guide wheel and the tape disk is too small to damage the strip.

[0025] The work surface 2 is provided with a welding part 4 and a testing part 5 in sequence from the strip disc side to the traction disc side: First, the welding part 4 is arranged at the left end of the middle part of the machine body 1 through the working table 2, and the welding part 4 is used to perform temperature-controlled welding operation on the strip passing through the working table 2. Figure 2-Figure 12 This is a schematic diagram of the structure of the welding portion 4 provided in an embodiment of the present invention: like Figure 2 , Figure 3With Figure 8 and Fig. 9 As shown, the welding part 4 may include: a welding base 401 installed on the working table 2, a welding bracket 402 connected to the rear side of the welding base 401, and the welding bracket 402 is a U-shaped structure with an opening facing forward: Such as Figure 4 With Figure 5 , a clamping cylinder 404 is arranged on the welding base 401, a thin air gripper 405 driven by the clamping cylinder 404 is arranged inside the welding base 401, and a welding cushion strip 406 and a cushion block 407 are arranged inside the welding base 401. Under the driving action of the clamping cylinder 404, the thin air gripper 405 tightly holds the welding cushion strip 406 and the cushion block 407 to provide stable support for the passing strip. Because the space of the middle welding area of the welding base 401 is narrow, an SMC air gripper MHF2-12D2 is selected to clamp the strip, and the maximum clamping force is 48N. The clamping force can be adjusted by additionally installing a pressure regulating valve and a throttle valve to ensure that the joints of the strip at both ends are not misaligned and improve the welding quality.

[0026] Such as Figure 4 and Figure 6 and Figure 8 With Fig. 9 , a Dopp electro-cylinder 403 is installed on the welding bracket 402. The output end of the Dopp electro-cylinder 403 is integrally connected with a threaded extension head 408. A press-fitting upper connecting plate 409 is installed on the threaded extension head 408. The lower end of the press-fitting upper connecting plate 409 is connected with a press-fitting middle connecting plate 410. A pressure sensor 411 is arranged inside the press-fitting middle connecting plate 410. The lower end position of the press-fitting middle connecting plate 410 is movably connected with a press-fitting lower connecting plate 412 that cooperates with the pressure sensor 411. It should be noted that the press-fitting upper connecting plate 409, the press-fitting middle connecting plate 410 and the press-fitting lower connecting plate 412 are distributed from top to bottom. The press-fitting lower connecting plate 412 senses the pressing action of the press-fitting middle connecting plate 410 by using the pressure sensor 411. The lower end of the press-fitting lower connecting plate 412 is connected with a welding press head. A heater 416 and a temperature sensor 417 are arranged inside the welding press head. And an air delivery mechanism 418 is arranged on the welding press head. Under the driving action of the Dopp electro-cylinder 403, the press-fitting lower connecting plate 412 presses the strip passing through the welding part 4, that is, the flat technology of automatic calibration of the press head is adopted to make the force on the welding joint of the strip uniform, realize the consistency of the quality and strength of the welding joint of the strip. The pressure is monitored and stabilized in real time through the pressure sensor 411, and the press head for pressing the strip is monitored and stabilized in real time through the heater 416 and the temperature sensor 417. The measuring range of the pressure sensor 411 is 0-2000N.

[0027] Secondly, the testing part 5 is arranged at the right end of the middle part of the machine body 1 through the working table 2, and the testing part 5 is used to perform liquid nitrogen testing on the strip after the welding operation. The strip joint is immersed in liquid nitrogen for testing, and the power output device is used to modulate the output current by software to achieve a stable linear current output. Then, a high-precision instrument is used to monitor the voltage of the welding point. Combined with the graphical processing method, it is calculated whether the resistance of the welding point meets the requirements, thereby realizing non-destructive and automated detection of the strip welding joint.

[0028] like Fig.13 As shown, the test section 5 may include a test plate mechanism 501, a lifting mechanism 502 and a test data analysis system 503. The lifting mechanism 502 is arranged on the work table 2. The test plate mechanism 501 and the test data analysis system 503 are arranged through the lifting mechanism 502. The test plate mechanism 501 is used to fix and drive the strip to contact the voltage and current leads. The lifting mechanism 502 is used to contact the strip and immerse the strip in liquid nitrogen during the lifting process. The test data analysis system 503 is used to calculate the resistance value of the welding joint and make comparative judgments.

[0029] On the other hand, the present invention also provides a test plate mechanism 501 including a quick caliper 50101 and a pressure block 50104, the quick caliper 50101 is connected to a second guide column 50102, the second guide column 50102 is mounted with a second compression spring 50103, and the second compression spring 50103 is connected to a spring copper block 50105. Because the strip welding joint is subjected to uniform force, the quality and strength of the strip welding joint are consistent, so the impact on the resistance and current of the strip itself is also smaller.

[0030] On the other hand, the present invention also provides a lifting mechanism 502 including a liquid nitrogen box 50201 installed on the machine body 1 through a work surface 2, a servo motor 50202 is provided on the work surface 2, and a linear module 50203 for installing the liquid nitrogen box 50201 is connected to the output end of the servo motor 50202. During the strip test, the strip needs to be immersed in liquid nitrogen. Since the strip is easily damaged and is not suitable for lifting and lowering movement, the strip test can only be achieved by lifting and lowering the liquid nitrogen box 50201. The test plate for pressing the strip is fixed on the work surface 2. The liquid nitrogen in the liquid nitrogen box 50201 is a dangerous source, and shaking and splashing during the movement process should be avoided. The lifting mechanism 502 uses a servo motor 50202 and a linear module 50203 to smoothly lift the liquid nitrogen box 50201 and avoid the risk of liquid nitrogen splashing.

[0031] On the other hand, the present invention also provides a test data analysis system 503 composed of an industrial computer, a magnet power supply, a voltmeter, and a display. Fig.17The industrial computer communicates with the power supply and voltmeter to continuously collect real-time data. The collected data is placed in a data array and used to fit the slope curve of all data. When testing the welding joint, the current rises linearly. Real-time voltage and current data are collected 4 times / s, and the curve is displayed graphically. After reaching the target current, the current automatically decreases linearly. The least squares fitting algorithm is used to obtain the slope of the voltage and the voltage, and the resistance value of the welding joint is accurately calculated. The quick caliper 50101 pushes the pressure block 50104 to press the strip on the spring copper block 50105 through the elastic force of the second guide column 50102 and the second compression spring 50103. By inputting current into the spring copper block 50105, the second compression spring 50103 at the lower end automatically adheres to the strip by elastic force, and then displays the voltage of the welding strip in the test area, thereby calculating whether the resistance value of the welding strip meets the requirements.

[0032] Further explanation: The gas transmission mechanism 418 is composed of a stainless steel pipe joint 41801, a T-type three-way joint 41802 and a copper tube 41803, and the stainless steel pipe joint 41801 is connected to the press-fit lower connecting plate 412, and two copper tubes 41803 are assembled and connected to the stainless steel pipe joint 41801 through the T-type three-way joint 41802. The gas transmission mechanism 418 is used to blow compressed air to cool the welding pressure head and the strip to reduce the high temperature pressure of the two.

[0033] The machine body 1 is provided with a PLC controller for controlling the opening and closing of the Doppler electric cylinder 403, the clamping cylinder 404, the pressure sensor 411, the heater 416, the temperature sensor 417, and the servo motor 50202. The pressure, temperature, time, and process required for welding are all completed through automatic control, and the simplified operation can not only improve the work efficiency, but also reduce the error rate caused by manual intervention; Because the Doppler electric cylinder 403 can accurately control the moving speed and position through the CNC system, it can achieve high-precision and stable movement welding functions.

[0034] Based on the same general inventive concept, the present invention also protects an integrated strip welding test machine. The integrated strip welding test machine provided by the present invention is described below. The integrated strip welding test machine described below and the integrated strip welding test machine described above can be referenced to each other.

[0035] The welding part 4 corresponds to the testing part 5 horizontally, and a cantilever bracket 3 corresponding to the traction disk is arranged on the right side of the machine body 1 to ensure the smooth transportation of the strip on the machine body 1.

[0036] In addition, two movable guide shafts 413 that penetrate the welding bracket 402 are connected to the press-fit upper connecting plate 409. It is worth mentioning that since high-precision and non-high-load linear guidance is required during the welding process, φ16 guide shafts 413 and linear bearings are selected to achieve precise guidance.

[0037] A telescopic adjustment mechanism is provided between the press-fit middle connecting plate 410 and the press-fit lower connecting plate 412. The telescopic adjustment mechanism includes a first guide column 414 connected to the lower end of the press-fit middle connecting plate 410. A matching first compression spring 415 is provided on the first guide column 414. It should be noted that the first guide column 414 is connected in sequence with a welding pressure head cover and a welding pressure head, and the strip is precisely welded by using a vertically lifted welding pressure head.

[0038] Furthermore, due to the long-term operation wear of the equipment, it is easy to cause the small end face of the welding pressure head to be slightly uneven or each batch of strips to be slightly uneven. The two first compression springs 415 can be compressed differently to automatically adjust the lower plane of the welding pressure head to fit the strip plane completely. The first compression spring 415 is preferably a rectangular spring, the spring constant of the rectangular spring is 255.71N / mm, the welding pressure is 500-900N, and the rectangular spring can be compressed by 2-3.5mm to ensure the fine-tuning amount of the welding pressure head and ensure that the strength of the rectangular spring is sufficiently stable, so as to ensure that the force of the strip welding joint is uniform, and the quality and strength are consistent.

[0039] The following operating steps can illustrate the working principle of the rewind welding test machine: First, the strip on the strip disc is pulled by driving the pulling disc, so that the strip passes through the welding part 4 and the testing part 5 from left to right in sequence; Secondly, when passing through the welding part 4, the downward pressure is provided by the Dopp electric cylinder 403 and the clamping cylinder 404, and the pressure is monitored and stabilized in real time by the pressure sensor 411; the welding pressure head is monitored and stabilized in real time by the heater 416 and the temperature sensor 417; and then the pressure, temperature, time and process required for welding are all automatically completed by the PLC controller for precise control, and the pressure of strip welding is automatically calibrated and leveled by the rectangular spring to ensure uniform force on the welding joint and consistency of quality and strength; Finally, when passing through the test section 5, the current rises linearly when testing the welding joint, and real-time voltage and current data are collected 4 times / s. The curve is displayed graphically, and the current automatically decreases linearly after reaching the target current. The least squares fitting algorithm is used to obtain the slope of the voltage and the voltage, and the resistance value of the welding joint is calculated. Combined with the graphical processing method, it is calculated whether the resistance of the welding point meets the requirements.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rewinding welding and testing machine, comprising a machine body (1), characterized in that: The machine body (1) is provided with a work surface (2), the work surface (2) is arranged in the middle of the machine body (1), and the work surface (2) is arranged horizontally along the left and right directions of the strip conveying track; The left and right outer walls of the machine body (1) are respectively provided with a strip reel and a traction reel for winding the strip, and the strip moves from the strip reel to the traction reel; The working table (2) is provided with the following components in order from the strip disc side to the traction disc side: A welding part (4), the welding part (4) being arranged at the left end of the middle part of the machine body (1) through the working table (2), and the welding part (4) being used to perform temperature-controllable welding operations on the strip passing through the working table (2); A testing section (5), wherein the testing section (5) is arranged at the right end of the middle part of the machine body (1) through the working table (2), and the testing section (5) is used to perform a liquid nitrogen testing operation on the strip after the welding operation.

2. The rewinding welding and testing integrated machine according to claim 1, characterized in that: The welding portion (4) corresponds horizontally to the testing portion (5), and a cantilever bracket (3) corresponding to the traction disc is arranged on the right side of the machine body (1).

3. The rewinding welding and testing integrated machine according to claim 2, characterized in that: The welding part (4) comprises a welding base (401) mounted on the work surface (2), and a welding bracket (402) is connected to the rear side of the welding base (401): A clamping cylinder (404) is provided on the welding base (401), a thin air claw (405) driven by the clamping cylinder (404) is provided in the welding base (401), and a welding pad (406) and a pad (407) are provided in the welding base (401); The welding bracket (402) is provided with a Doppler electric cylinder (403), the output end of the Doppler electric cylinder (403) is integrally connected with a threaded extension head (408), a press-fit upper connecting plate (409) is provided on the threaded extension head (408), the lower end of the press-fit upper connecting plate (409) is connected with a press-fit middle connecting plate (410), a pressure sensor (411) is provided inside the press-fit middle connecting plate (410), and a press-fit lower connecting plate (412) matching the pressure sensor (411) is movably connected at the lower end of the press-fit middle connecting plate (410), a welding pressure head is connected at the lower end of the press-fit lower connecting plate (412), a heater (416) and a temperature sensor (417) are provided inside the welding pressure head, and a gas supply mechanism (418) is provided on the welding pressure head.

4. The rewinding welding and testing integrated machine according to claim 3, characterized in that: The press-fit upper connecting plate (409) is connected to two guide shafts (413) that movably penetrate the welding bracket (402); A telescopic adjustment mechanism is provided between the press-fit middle connecting plate (410) and the press-fit lower connecting plate (412).

5. The rewinding welding and testing integrated machine according to claim 4, characterized in that: The gas transmission mechanism (418) is composed of a stainless steel pipe joint (41801), a T-shaped three-way joint (41802) and a copper pipe (41803), and the stainless steel pipe joint (41801) is connected to the press-fit lower connection plate (412), and two copper pipes (41803) are assembled and connected to the stainless steel pipe joint (41801) via the T-shaped three-way joint (41802).

6. The rewinding welding and testing integrated machine according to claim 4, characterized in that: The telescopic adjustment mechanism comprises a first guide column (414) connected to the lower end of the press-fit middle connecting plate (410), and a matching first compression spring (415) is arranged on the first guide column (414).

7. The rewinding welding and testing integrated machine according to claim 1, characterized in that: The testing section (5) comprises a testing plate mechanism (501), a lifting mechanism (502) and a testing data analysis system (503); the lifting mechanism (502) is arranged on a work surface (2); the testing plate mechanism (501) and the testing data analysis system (503) are arranged via the lifting mechanism (502); the testing plate mechanism (501) is used to fix and drive the strip to contact voltage and current leads; the lifting mechanism (502) is used to contact the strip during the lifting process and immerse the strip in liquid nitrogen; and the testing data analysis system (503) is used to calculate the resistance value of the welding joint.

8. The rewinding welding and testing integrated machine according to claim 7, characterized in that: The test plate mechanism (501) comprises a quick caliper (50101) and a pressure block (50104); the quick caliper (50101) is connected to a second guide column (50102); the second guide column (50102) is sleeved with a second compression spring (50103); and the second compression spring (50103) is connected to a spring copper block (50105).

9. The rewinding welding and testing integrated machine according to claim 7, characterized in that: The lifting mechanism (502) comprises a liquid nitrogen box (50201) mounted on the machine body (1) via a work surface (2); a servo motor (50202) is provided on the work surface (2); and a linear module (50203) for mounting the liquid nitrogen box (50201) is connected to an output end of the servo motor (50202).

10. The rewinding welding and testing integrated machine according to claim 7, characterized in that: The test data analysis system (503) is composed of an industrial computer, a magnet power supply, a voltmeter, and a display. The industrial computer communicates with the power supply and the voltmeter and is used to continuously collect real-time data. The collected data is placed in a data array and is used to fit the slope curve of all the data.

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