Stress-free temperature sensor reverse welding tool and processing technology

Abstract

The invention relates to a stress-free temperature sensor reverse welding tool and a processing technology, and belongs to the technical field of sensor production. The temperature sensor reverse welding tool comprises a first mounting plate, a second mounting plate and a welding mechanism, the first mounting plate is provided with a first mounting groove allowing a temperature sensitive resistor to be embedded, the second mounting plate is provided with a second mounting groove allowing a wire to be embedded, and the welding mechanism comprises a sliding table arranged in a sliding mode and a welding machine. The first mounting plate and the second mounting plate are used for being mounted on the sliding table, the second mounting plate is located above the first mounting plate, a plurality of positioning grooves are formed in the sliding table, and every two positioning grooves correspond to one temperature resistor. The sliding table is provided with a plurality of positioning grooves, each positioning groove is used for embedding a wire and a lead of a temperature sensitive resistor, and when the sliding table moves forwards by a certain distance, the welding machine performs spot welding fixation on the wire and the lead of the temperature sensitive resistor once. According to the invention, the welding quality and the welding efficiency of the temperature sensor are improved, the stress on the pins of the temperature chip is relieved and eliminated after the temperature sensor is packaged, the service life of the product is prolonged, and the reliability of the product is improved.

Description

Technical Field

[0001] The present application relates to the technical field of sensor production, and in particular to a stress-free temperature sensor reverse welding tool and processing technology. Background Art

[0002] Temperature sensors are a common type of sensor in our daily life. Compared with other sensors, they mainly use the principle that the resistance value of the temperature resistor changes with the temperature, and then reflect the temperature change through the change of current. During the production and installation process of the temperature sensor, the electrical connection between the temperature resistor and the wire is an important production process, that is, the two leads on the temperature sensitive resistor are electrically connected to the two wires respectively through spot welding or other welding methods.

[0003] With respect to the above-mentioned related technologies, the inventors have found the following defects: the outer diameters of the two leads on the temperature-sensitive resistor are generally very small, and the outer diameter of the wire itself is also relatively small. During welding, people need to manually align the ends of the leads on the temperature-sensitive resistor with the wires and fit them together, and then weld and fix them by laser spot welding to achieve electrical connection. This welding process has very high requirements on the skills of the welding master. If the lead ends cannot be aligned or the laser welding point positions are not aligned, it is easy to cause poor contact between the leads and the wires, resulting in the manual welding yield rate always failing to reach a high level, and the welder master is required to have a high length of service, which invisibly increases the labor cost of the enterprise. Summary of the invention

[0004] In order to improve the welding quality and welding efficiency of the temperature sensor, the present application provides a temperature sensor reverse welding tool and process.

[0005] The present application provides a temperature sensor reverse soldering tool, which adopts the following technical solution: A temperature sensor reverse welding tool comprises a first mounting plate, a second mounting plate and a welding mechanism, wherein the first mounting plate is provided with a first mounting groove for embedding a lead of a temperature sensitive resistor, and the second mounting plate is provided with a second mounting groove for embedding a wire, and the welding mechanism comprises a sliding table and a welding machine with a sliding arrangement, wherein the first mounting plate and the second mounting plate are used for being mounted on the sliding table, and the second mounting plate is located above the first mounting plate, and the sliding table is provided with a plurality of positioning grooves, wherein every two positioning grooves correspond to a temperature resistor, and each of the positioning grooves is used for embedding a wire and a lead of a temperature sensitive resistor, and when the sliding table moves forward a certain distance each time, the welding machine performs a spot welding to fix the wire and the lead of the temperature sensitive resistor.

[0006] Optionally, a pressing piece is provided on the sliding platform, and the pressing piece is located on a side of the positioning groove away from the first mounting plate, and the pressing piece is used to press the ends of the wire and the lead of the temperature sensitive resistor.

[0007] Optionally, the temperature sensor reverse welding tool also includes a shearing machine. When the welding machine completes the pre-welding of the wire and the temperature sensitive resistor, the sliding table moves to the shearing machine position. The sliding table is provided with a welding receiving table for placing the lead wire of the wire and the temperature sensitive resistor. The welding receiving table is located between the positioning groove and the first mounting table. The shearing machine has a movably arranged cutting blade. There is a yielding cutting seam between the positioning groove and the welding receiving table for the cutting blade to be embedded.

[0008] Optionally, the temperature sensor welding tool further includes an argon arc welder, which has a placement table. After the cutting blade completes cutting the wire and the lead of the temperature sensitive resistor, the first mounting plate and the second mounting plate are placed on the placement table, and the argon arc welder is used to perform secondary welding and fixation on the wire and the lead of the temperature sensitive resistor on the placement table.

[0009] Optionally, a flipping mechanism is provided on the placement table, and a placement groove is provided on the placement table for placing the first mounting plate and the second mounting plate. A contact plate is movably provided on the placement table for surrounding the placement groove and abutting against the side wall of the first mounting plate. The flipping mechanism includes a sliding rotating motor, a rotating disk arranged at the end of the output shaft of the rotating motor, and a rotating shaft arranged on the rotating disk. A rotating hole is opened on the first mounting plate for inserting the rotating shaft, and the rotating shaft is used to drive the first mounting plate to flip upward by 0°.

[0010] Optionally, a clearance opening is provided on the first mounting plate, a flip baffle is slidably provided inside the first mounting plate for filling the clearance opening, a control rod is provided on the rotating disk, the flip baffle has an inclined wall for abutting against the end of the control rod, and when the control rod is inserted into the first mounting plate and abuts against the inclined wall, the flip baffle moves upward.

[0011] Optionally, a material receiving box is arranged below the placement table, and the placement table has two symmetrically arranged movable plates, and the placement grooves are opened on the two movable plates. When the two movable plates move away from each other, the first mounting plate and the second mounting plate fall from the placement grooves into the material receiving box below.

[0012] A temperature sensor reverse soldering process: S1: The temperature sensitive resistor is fixedly mounted on the first mounting plate, the wire is fixedly mounted on the second mounting plate, the lead of the temperature sensitive resistor is embedded in the first mounting groove, and the wire is embedded in the second mounting groove.

[0013] S2: The first mounting plate and the second mounting plate are fixedly mounted on the sliding table, and the sliding table is started to move toward the welding machine and the shearing machine in sequence, and the welding machine performs welding.

[0014] S3: placing the cut first mounting plate and the second mounting plate in a argon arc welding machine, and performing secondary welding to fix the wires and leads.

[0015] S4: The rotating shaft and the control rod are inserted into the first mounting plate, and the first mounting plate is turned upward by 0° under the driving action of the rotating motor.

[0016] S5: The two movable plates move away from each other, and the first mounting plate and the second mounting plate fall into the material receiving box.

[0017] In summary, the present application includes at least one of the following beneficial technical effects: 1. The lead wires and conductors are positioned by setting the first mounting plate and the second mounting plate and the positioning groove, and then the welding machine automatically spot welds and fixes them, which reduces the labor cost, increases the production efficiency of the temperature sensor, and reduces the occurrence of welding defective products; 2. By setting a flip mechanism, the first mounting plate is flipped upward by 180°, so that the temperature sensitive resistor and the wire are located on both sides of the welding point respectively, and a bending arc is formed on the lead wire, thereby providing a certain distance buffer space for the lead wire. When the welding point is directly subjected to external tensile stress, the lead wire is not easy to fall off and break at the welding point; 3. By providing a movable flip baffle, the length of the bending arc is reduced, making the structure of the temperature sensor itself more compact, and during the welding process, the flip baffle is locked in the first mounting plate, so it is not easy to interfere with the welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the connection structure between the temperature sensitive resistor and the wire after the reverse soldering is completed in the embodiment of the present application.

[0019] Figure 2 It is a schematic diagram of the installation structure of the second installation plate and the wire in the embodiment of the present application.

[0020] Figure 3 It is a structural schematic diagram of the welding mechanism and shearing machine in the embodiment of the present application.

[0021] Figure 4 It is a structural diagram of a mobile station in an embodiment of the present application.

[0022] Figure 5 It is a schematic diagram of the structure of a shearing machine in another application embodiment.

[0023] Figure 6 It is a schematic diagram of the structure of the argon arc welding machine in the embodiment of the present application.

[0024] Figure 7 It is a structural schematic diagram of the placement table in the embodiment of the present application.

[0025] Figure 8 It is a schematic diagram of the back structure of the placement table in the embodiment of the present application.

[0026] Fig. 9 It is a schematic diagram of the exploded structure of the flipping mechanism and the first mounting plate in the embodiment of the present application.

[0027] Fig.10 It is a schematic diagram of the bending shape of the lead wire when a blocking plate is placed in an embodiment of the present application.

[0028] Fig.11 It is a partial structural diagram of the flipping mechanism in another embodiment.

[0029] Fig.12 It is a partial structural schematic diagram of the flipping mechanism in another embodiment when the push plate is in a hidden state.

[0030] Explanation of the reference numerals: 1. welding mechanism; 11. sliding table; 111. positioning column; 112. positioning groove; 113. pressing member; 114. welding receiving table; 115. making way for cutting seam; 12. welding machine; 2. shearing machine; 21. cutting blade; 3. argon arc welding machine; 4. placing table; 41. moving plate; 42. abutting plate; 43. receiving box; 44. inclined slide; 45. placing groove; 46. receiving plate; 461. pulling groove; 47. pushing cylinder; 48. reset spring; 5. turning mechanism; 51. rotating motor; 52. rotating disk; 53. rotating shaft; 54. control lever; 6. first mounting plate; 61. making way for opening; 62. turning baffle; 621. inclined wall; 7. second mounting plate; 71. second mounting groove; 8. temperature sensitive resistor; 81. lead wire; 82. bending arc; 9. wire. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings 1-12.

[0032] Reference Figure 1The embodiment of the present application discloses a stress-free temperature sensor reverse welding fixture. The temperature sensor reverse welding fixture is used to weld and fix two wires 9 to two leads 81 of a temperature sensitive resistor 8 respectively, so as to realize electrical connection between the temperature sensitive resistor 8 and the wires 9.

[0033] Reference Figure 1-10 The stress-free temperature sensor reverse welding tooling includes a first mounting plate 6, a second mounting plate 7, and a welding mechanism 1. The first mounting plate 6 is provided with a first mounting groove for embedding the lead 81 of the temperature sensor, and the second mounting plate 7 is provided with a second mounting groove 71 for embedding the wire 9. The welding mechanism 1 includes a sliding table 11 and a welding machine 12. After the temperature-sensitive resistor 8 is installed on the first mounting plate 6 and the wire 9 is installed on the second mounting plate 7, the first mounting plate 6 and the second mounting plate 7 are preliminarily packaged with tape to prevent the temperature-sensitive resistor 8 and the wire 9 from falling off the first mounting plate 6 and the second mounting plate 7. Then the first mounting plate 6 is placed on the sliding table 11, and the second mounting plate 7 is aligned and placed directly above the first mounting plate 6. A positioning column 111 is provided on the sliding table 11, so that the first mounting plate 6 and the second mounting plate 7 can be aligned, and the first mounting plate 6 and the second mounting plate 7 are not easy to shake relative to each other during the movement of the sliding table 11. It is worth noting that a groove for embedding the resistor part of the temperature-sensitive resistor 8 is provided on one side of the first mounting plate 6 close to the second mounting plate 7, so that after the second mounting plate 7 is pressed onto the first mounting plate 6, the second mounting plate 7 is not easy to be directly pressed onto the temperature-sensitive resistor 8, thereby not easily causing damage to the temperature-sensitive resistor 8.

[0034] The slide table 11 is provided with a plurality of positioning grooves 112, and each two positioning grooves 112 form a group, and each positioning groove 112 is used to embed a wire 9 and a lead wire 81 of the temperature sensitive resistor 8. After the first mounting plate 6 is mounted on the slide table 11, the ends of the two leads 81 of the temperature sensitive resistor 8 are respectively embedded in the two positioning grooves 112, and then the second mounting plate 7 is mounted, and then the wire 9 is embedded in the positioning groove 112, at which time the lead wire 81 and the wire 9 are in a state of being closely attached to each other.

[0035] Then the slide table 11 moves forward intermittently, and each time the slide table 11 moves forward a short distance, the welding head on the welding machine 12 moves downward a short distance, and then welds the lead wire 81 and the wire 9, and then the welding machine 12 is reset, and waits for the slide table 11 to move forward next time to perform the second welding fixation. The slide table 11 is driven by a motor screw rod to move, and the movement driving method of the motor screw rod is a conventional technical means, which will not be repeated in this embodiment.

[0036] Among them, a pressing piece 113 is also rotatably provided on the sliding table 11. The pressing piece 113 is located on the side of the positioning groove 112 away from the first mounting plate 6. When the lead 81 and the wire 9 are embedded in the positioning groove 112, the ends of the lead 81 and the wire 9 protrude from the positioning groove 112. At this time, the pressing piece 113 is rotated and the ends of the lead 81 and the wire 9 are pressed, so that the positions of the lead 81 and the wire 9 are more stable. A welding receiving platform 114 is provided on the sliding table 11. The welding receiving platform 114 is located between the first mounting plate 6 and the positioning groove 112, and there is a clearance cutting seam 115 between the positioning groove 112 and the welding receiving platform 114. During the welding process of the welding machine 12, since the space of the positioning groove 112 is relatively small, if welding is performed at the position of the positioning groove 112, it is easy for the welding head of the welding machine 12 to interfere with the groove wall of the positioning groove 112, so the welding receiving platform 114 is provided as the welding position.

[0037] The stress-free temperature sensor reverse welding tool also includes a shearing machine 2. When the welding machine 12 completes the welding and fixing of the wire 9 and the lead 81, the shearing machine 2 shears off the excess parts of the wire 9 and the lead 81. The shearing machine 2 uses a vertically lifting cutting blade 21 for cutting, and when the cutting blade 21 cuts, the bottom of the cutting blade 21 slides and embeds into the yielding cutting seam 115, and then the pressing member 113 is released, and at this time, the excess parts of the wire 9 and the lead 81 will automatically fall off. Among them, the lifting and lowering of the cutting blade 21 is still driven by a motor screw.

[0038] Reference Figure 4 In another embodiment, the excess parts of the wire 9 and the lead 81 can be directly cut by a conventional cutting machine. At this time, the welded first mounting plate 6 and the second mounting plate 7 need to be fixed on the cutting machine, and then the cutting tool can be rotated to cut.

[0039] The stress-free temperature sensor inverted welding tool also includes an argon arc welding machine 3. After the cutting is completed, the first mounting plate 6 and the second mounting plate 7 are placed in the argon arc welding machine 3. The argon arc welding machine 3 is provided with a placement table 4. The placement table 4 is provided with a placement groove 45 for the first mounting plate 6 and the second mounting plate 7 to be embedded. Then the argon arc welding machine 3 performs secondary welding to fix the wire 9 and the lead 81 between the first mounting plate 6 and the second mounting plate 7.

[0040] The placing table 4 is also provided with a flipping mechanism 5. Two moving plates 41 are symmetrically arranged on the placing table 4. The placing groove 45 is formed by the two moving plates 41. The moving plate 41 is provided with an abutting plate 42, which is the groove wall of the placing groove 45. The abutting plate 42 is driven by the cylinder to move, so that the first mounting plate 6 can slide in the direction away from the second mounting plate 7. The flipping mechanism 5 includes a sliding rotating motor 51, a rotating disk 52 arranged at the end of the output shaft of the rotating motor 51, and a rotating shaft 53 arranged on the rotating disk 52. A rotating hole for inserting the rotating shaft 53 is opened on the side wall of the first mounting plate 6. When the rotating shaft 53 is inserted into the rotating hole, the rotating motor 51 drives the rotating shaft 53 to rotate, and the rotating shaft 53 rotates 180°, so that the first mounting plate 6 rotates 180° upward with the axis of the rotating shaft 53 as the rotation center line. In the process of flipping the first mounting plate 6, the abutting plate 42 is away from the first mounting plate 6, thereby providing a rotation space for the first mounting plate 6.

[0041] The rotating shaft 53 is a square shaft, and the corresponding rotating hole is a square hole. The placing table 4 is provided with a pushing cylinder 47 for driving the rotating motor 51 to move horizontally, thereby controlling the rotating shaft 53 to be inserted into the first mounting plate 6, or controlling the rotating shaft 53 to be pulled out from the first mounting plate 6.

[0042] Reference Figure 1 and Fig.10 When the first mounting plate 6 is flipped, the temperature-sensitive resistor 8 on the first mounting plate 6 is also flipped. At this time, the welding part of the lead 81 and the wire 9 of the temperature-sensitive resistor 8 will form a bending arc 82. That is, after flipping, the temperature-sensitive resistor 8 and the wire 9 are respectively located on both sides of the bending arc 82 (before flipping, the two are located on the same side of the bending arc 82). Since the bending arc 82 itself has a certain elastic deformation space, when the resistor part of the temperature-sensitive resistor 8 is pulled by an external force or the material expands and contracts due to heat, the bending arc 82 can form a certain degree of distance buffer, so that the welding part is not easy to be broken. (The traditional manual spot welding method directly welds the wire 9 and the lead 81, and the bending arc 82 cannot be formed, unless the same-side welding method is also adopted during the spot welding process. After the welding is completed, the temperature-sensitive resistor 8 is manually flipped to the other side of the welding point so that the temperature-sensitive resistor 8 and the wire 9 are respectively located on both sides of the welding point) The overall width of the first mounting plate 6 is greater than that of the second mounting plate 7 (definition: the extension direction of the wire 9 is the width direction of the second mounting plate 7). The first mounting plate 6 is provided with a clearance opening 61 at the portion of the width exceeding the second mounting plate 7. A flip baffle 62 for filling the clearance opening 61 is slidably embedded in the first mounting plate 6. A control rod 54 for inserting into the first mounting plate 6 is provided on the rotating disk 52. The flip baffle 62 has an inclined wall 621 which is inclined and abuts against the end of the control rod 54. The entire flip baffle 62 is an isosceles trapezoid as a whole. The length of the control rod 54 is greater than the length of the rotating shaft 53. In the process of inserting the rotating shaft 53 into the first mounting plate 6, the control rod 54 is also inserted into the first mounting plate 6 and abuts against the inclined wall 621, so that the flip baffle 62 moves upward and gradually covers the clearance opening 61 (equivalent to the increase in the width of the first mounting plate 6). Among them, a magnetic attraction device can be set in the first mounting plate 6, so that under normal conditions, the flip baffle 62 is adsorbed inside the first mounting plate 6. Only when the control rod 54 is inserted into the first mounting plate 6 and abuts against the inclined wall 621, the flip baffle 62 overcomes the magnetic attraction and slides to the position covering the clearance opening 61.

[0043] The purpose of setting the flip baffle 62 to make the width of the first mounting plate 6 adjustable is: if the first mounting plate 6 always maintains a small width, the length of the lead 81 protruding from the first mounting plate 6 will be longer. Since the welding head part of the welding machine 12 has a certain volume, the part of the lead 81 protruding from the first mounting plate 6 is the welding part, and the longer the length protruding from the side wall of the first mounting plate 6, the less likely the welding head part of the welding machine 12 will interfere with the side wall of the first mounting plate 6. That is, when the width of the first mounting plate 6 is small, the welding head is not easy to touch the side wall of the first mounting plate 6. However, during the flipping of the lead 81, the lead 81 is flipped with the side wall of the first mounting plate 6 as the force point. If the length of the lead 81 part protruding from the first mounting plate 6 is long, the bending arc 82 on the lead 81 will be longer, so that the entire temperature sensor is relatively loose and the length is not stable enough, that is, the most reasonable state is that the flip arc only provides a small distance buffer space for the entire temperature sensor, and 1-2mm is the best, so as to provide a certain range of elastic buffer space for thermal expansion and contraction. Therefore, when the flip baffle 62 slides upward, the distance that the lead 81 protrudes from the side wall of the first mounting plate 6 is reduced, thereby reducing the length of the subsequent bending arc 82.

[0044] A material receiving box 43 is arranged under the placement table 4. The two movable plates 41 are controlled by the cylinder and can be close to or away from each other. When the two movable plates 41 are away from each other, the first mounting plate 6 and the second mounting plate 7 fall from the placement groove 45 into the material receiving box 43. Finally, the staff will tear off the tape on the first mounting plate 6 and the second mounting plate 7, and then take out the welded wire 9 and the temperature sensitive resistor 8. The material receiving box 43 is provided with an inclined slide 44 for buffering.

[0045] Reference Fig.11 and Fig.12 In another embodiment, the placement table 4 is provided with a receiving plate 46 which is slidably disposed at the bottom of the placement groove 45. The receiving plate 46 is the groove bottom of the placement groove 45 and is used to support the first mounting plate 6 and the second mounting plate 7. A pulling rod 521 is integrally connected to the outer wall of the rotating disk 52, and a pulling groove 461 is provided on the receiving plate 46. When the rotating shaft 53 is inserted into the first mounting plate 6 and drives the first mounting plate 6 to rotate upward by 180°, the pulling rod 521 is synchronously rotated downward by 180° and embedded in the pulling groove 461. Under the action of the pushing cylinder 47, the rotating motor 51 drives the rotating disk 52 away from the first mounting plate 6 and the second mounting plate 7. At this time, the pulling rod 521 drives the receiving plate 46 away from the first mounting plate 6 and the second mounting plate 7. The first mounting plate 6 and the second mounting plate 7 fall off from the placement groove 45 and fall into the receiving box 43. A reset spring 48 is welded and fixed on the placement table 4 , and an end of the reset spring 48 is welded and fixed to the side wall of the receiving plate 46 to push the receiving plate 46 to reset.

[0046] Based on the above temperature sensor inverted soldering tooling, the temperature sensor inverted soldering process is as follows: S1: The temperature sensitive resistor 8 is fixedly mounted on the first mounting plate 6, the wire 9 is fixedly mounted on the second mounting plate 7, the lead 81 of the temperature sensitive resistor 8 is embedded in the first mounting groove, and the wire 9 is embedded in the second mounting groove 71.

[0047] S2: The first mounting plate 6 and the second mounting plate 7 are fixedly mounted on the sliding table 11, and the sliding table 11 is started, so that the sliding table 11 moves toward the welding machine 12 and the cutting machine in sequence, so as to perform preliminary welding and fixing and subsequent tail material cutting processing.

[0048] S3: Place the cut first mounting plate 6 and second mounting plate 7 in the argon arc welding machine 3 for secondary welding and fixing.

[0049] S4: The rotating shaft 53 and the control rod 54 are inserted into the first mounting plate 6, and driven by the rotating motor 51, the first mounting plate 6 is turned upward by 180°.

[0050] S5: Under the pushing action of the cylinder, the two movable plates 41 move away from each other, and the first mounting plate 6 and the second mounting plate 7 fall into the receiving box 43.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A stress-free temperature sensor back-welding tool, characterized in that: include: A first mounting plate (6), a second mounting plate (7) and a welding mechanism (1), wherein the first mounting plate (6) is provided with a first mounting groove for embedding a lead wire (81) of a temperature sensitive resistor (8), and the second mounting plate (7) is provided with a second mounting groove (71) for embedding a lead wire (9), and the welding mechanism (1) comprises a sliding table (11) and a welding machine (12), wherein the first mounting plate (6) and the second mounting plate (7) are used to be mounted on the sliding table (11), and the second mounting plate (7) is used to be mounted on the sliding table (11). The plate (7) is located above the first mounting plate (6), and a plurality of positioning grooves (112) are provided on the sliding platform (11), and every two positioning grooves (112) correspond to a temperature resistor, and each positioning groove (112) is used for inserting a wire (9) and a lead wire (81) of a temperature sensitive resistor (8), and when the sliding platform (11) moves forward a certain distance, the welding machine (12) performs a spot welding to fix the wire (9) and the lead wire (81) of the temperature sensitive resistor (8).

2. The stress-free temperature sensor back-welding tooling according to claim 1 is characterized in that: A pressing piece (113) is provided on the sliding platform (11), and the pressing piece (113) is located on a side of the positioning groove (112) away from the first mounting plate (6). The pressing piece (113) is used to press the ends of the lead wire (9) and the lead wire (81) of the temperature sensitive resistor (8).

3. The temperature sensor back-welding tool according to claim 2, characterized in that: The invention also comprises a shearing machine (2). When the welding machine (12) completes the pre-welding of the wire (9) and the temperature-sensitive resistor (8), the sliding table (11) moves to the position of the shearing machine (2). The sliding table (11) is provided with a welding receiving table (114) for placing the wire (9) and the lead wire (81) of the temperature-sensitive resistor (8). The welding receiving table (114) is located between the positioning groove (112) and the first mounting plate (6). The shearing machine (2) has a movably arranged cutting blade (21). A clearance cutting slit (115) is provided between the positioning groove (112) and the welding receiving table (114) for the cutting blade (21) to be embedded.

4. The temperature sensor reverse soldering tool according to claim 3, characterized in that: It also includes an argon arc welding machine (3), the argon arc welding machine (3) having a placement table (4), and after the cutting blade (21) completes cutting the wire (9) and the lead wire (81) of the temperature sensitive resistor (8), the first mounting plate (6) and the second mounting plate (7) are placed on the placement table (4), and the argon arc welding machine (3) is used to perform secondary welding and fixation on the wire (9) and the lead wire (81) of the temperature sensitive resistor (8) on the placement table (4).

5. The temperature sensor back-welding tool according to claim 4, characterized in that: The placement table (4) is provided with a flipping mechanism (5), the placement table (4) is provided with a placement groove (45) for placing the first mounting plate (6) and the second mounting plate (7), the placement table (4) is movably provided with an abutment plate (42) for surrounding the placement groove (45) and abutting against the side wall of the first mounting plate (6), the flipping mechanism (5) comprises a slidingly arranged rotating motor (51), a rotating disk (52) arranged at the end of the output shaft of the rotating motor (51), and a rotating shaft (53) arranged on the rotating disk (52), the first mounting plate (6) is provided with a rotating hole for inserting the rotating shaft (53), and the rotating shaft (53) is used to drive the first mounting plate (6) to flip upward by 180 degrees.

6. The temperature sensor back-welding tool according to claim 5, characterized in that: The first mounting plate (6) is provided with a clearance opening (61), a flip baffle (62) is slidably arranged inside the first mounting plate (6) for filling the clearance opening (61), a control rod (54) is arranged on the rotating disk (52), the flip baffle (62) has an inclined wall (621) for abutting against an end of the control rod (54), and when the control rod (54) is inserted into the first mounting plate (6) and abuts against the inclined wall (621), the flip baffle (62) moves upward.

7. The temperature sensor back-welding tool according to claim 5, characterized in that: A material receiving box (43) is arranged below the placement table (4). The placement table (4) has two symmetrically arranged movable plates (41). The placement slots (45) are opened on the two movable plates (41). When the two movable plates (41) move away from each other, the first mounting plate (6) and the second mounting plate (7) fall from the placement slots (45) into the material receiving box (43) below.

8. The temperature sensor back-welding tool according to claim 5, characterized in that: The placement table (4) is provided with a receiving plate (46) which is slidably disposed at the bottom of the placement groove (45); the first mounting plate (6) and the second mounting plate (7) are placed above the receiving plate (46); a pulling rod (521) is provided on the rotating disk (52); a pulling groove (461) is provided on the receiving plate (46); when the first mounting plate (6) is flipped upward by 180°, one end of the pulling rod (461) away from the rotating disk (52) is embedded in the pulling groove (461); the pulling rod (461) is used to pull the receiving plate (46) in a direction away from the first mounting plate (6) and the second mounting plate (7); a return spring (48) is provided on the placement table (4); and the end of the return spring (48) is used to abut against the side wall of the receiving plate (46).

9. A temperature sensor back-welding tooling process, according to the temperature sensor back-welding tooling according to claims 1-7, wherein the steps are as follows: S1: The temperature sensitive resistor (8) is fixedly mounted on the first mounting plate (6), the wire (9) is fixedly mounted on the second mounting plate (7), the lead wire (81) of the temperature sensitive resistor (8) is embedded in the first mounting groove, and the wire (9) is embedded in the second mounting groove (71); S2: The first mounting plate (6) and the second mounting plate (7) are fixedly mounted on the sliding table (11), and the sliding table (11) is started so that the sliding table (11) moves successively toward the welding machine (12) and the shearing machine (2), and the welding machine (12) performs welding; S3: placing the cut first mounting plate (6) and the second mounting plate (7) in an argon arc welding machine (3), and performing secondary welding to fix the wire (9) and the lead wire (81); S4: The rotating shaft (53) and the control rod (54) are inserted into the first mounting plate (6), and the first mounting plate (6) is turned upward by 180° under the driving action of the rotating motor (51); S5: Take out the first mounting plate (6) and the second mounting plate (7) from the placement groove (45), and then take out the wire (9) and the temperature sensitive resistor (8).

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