Sensor welding jig

Abstract

The invention provides a sensor welding jig. Relates to the technical field of electronic component welding. The sensor welding jig comprises a load-bearing folded plate, a double-shaft air cylinder is fixedly installed on the load-bearing folded plate, an abutting piece is fixedly installed on an output shaft of the double-shaft air cylinder, the abutting piece extends to the position above the load-bearing folded plate and is movably connected with the top of the load-bearing folded plate, a translation table is arranged at the top of the load-bearing folded plate, and the translation table is movably connected with the output shaft of the double-shaft air cylinder. Two n-shaped frame rods are fixedly mounted at the top of the translation table, a plurality of stirring pieces are slidably mounted on the two n-shaped frame rods, hollow rectangular sleeves are fixedly mounted at the tops of the stirring pieces, metal wire grooves are formed in the inner walls of the bottoms of the hollow rectangular sleeves, and pressing strips are arranged in the hollow rectangular sleeves. The welding method has the advantages that the welding effect is good, the phenomenon of insufficient welding is prevented, and the welding efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic component soldering, and particularly to a sensor soldering jig. Background Art

[0002] A temperature sensor is a device that converts temperature changes into measurable electrical signals (such as voltage, current, or resistance). Commonly available temperature sensors on the market generally consist of a temperature sensing element, packaging material, pins, and wiring methods. The temperature sensing element is usually a ceramic chip, which is used as a thermistor to measure temperature. During the manufacturing process of the temperature sensor, in order to ensure the stable conduction of the resistance value and the external circuit, it is necessary to connect and fix the metal lead to the pin on the temperature sensing element by soldering to form a path. Common soldering methods include soldering iron soldering, dip soldering, and resistance spot welding, etc., all of which can achieve the connection between the temperature sensing element and the metal lead. Moreover, during the soldering process, a corresponding jig is required to clamp and position the temperature sensing element so that the soldering work can be carried out smoothly.

[0003] However, during the soldering process, the number of pins on the temperature sensing element is usually multiple. When using traditional jigs, it is necessary to first clamp and position the temperature sensing element, then manually attach a metal lead to the pin, and then perform soldering. After each metal lead is soldered, the next metal lead is attached to the corresponding pin for soldering. This one-by-one soldering method, on the one hand, requires manually attaching the metal lead to the pin, which is likely to cause separation between the two due to hand shaking, resulting in a cold solder joint. On the other hand, each soldering requires re-attaching the metal lead to the corresponding pin, which is time-consuming after multiple times and reduces the soldering efficiency.

[0004] Therefore, it is necessary to provide a sensor soldering jig to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a sensor soldering jig with good soldering effect, preventing the occurrence of cold solder joints, and high soldering efficiency.

[0006] In order to solve the above technical problems, the sensor welding jig provided by the present invention includes: a load-bearing folding plate, a double-axis cylinder is fixedly installed on the load-bearing folding plate, a supporting plate is fixedly installed on the output shaft of the double-axis cylinder, the supporting plate extends to the top of the load-bearing folding plate and is movably connected to the top of the load-bearing folding plate, a translation platform is provided on the top of the load-bearing folding plate, two U-shaped racks are fixedly installed on the top of the translation platform, a plurality of toggle plates are slidably installed on the two U-shaped racks, a plurality of toggle plates are fixedly installed on the top of each of the plurality of toggle plates, and a metal sleeve is provided on the bottom inner wall of each of the plurality of hollow rectangular sleeves. It belongs to a wire groove, and a plurality of the hollow rectangular sleeves are each provided with a clamping strip, and a first single-axis cylinder is fixedly installed on the top of the plurality of the hollow rectangular sleeves, and the output shafts of the plurality of the first single-axis cylinders respectively extend into the plurality of the hollow rectangular sleeves and are fixedly connected with the corresponding clamping strips, and the output shafts of the plurality of the first single-axis cylinders are respectively slidably connected with the tops of the plurality of the hollow rectangular sleeves; a positioning stop strip is fixedly installed on the top of the load-bearing folding plate, and a hollow frame seat is provided on one side of the load-bearing folding plate for placing a temperature sensing element to be welded, and a clamping positioning mechanism is provided on the hollow frame seat for fixing the temperature sensing element.

[0007] Preferably, a scale bar is fixedly installed on the top of the translation table, and positioning bars are fixedly installed on the side of the multiple toggle plates away from the abutment plates, and the multiple positioning bars are located above the scale bar. A retaining thread head is threadedly installed on the side of the multiple toggle plates away from the abutment plates, and the end of the retaining thread head is in conflict with the corresponding U-shaped frame rod.

[0008] Preferably, a rodless cylinder is fixedly installed on the inner side of the load-bearing folding plate, a connecting arm is fixedly installed on the slider of the rodless cylinder, the top of the connecting arm passes through the load-bearing folding plate and is slidably connected to the load-bearing folding plate, and the top of the connecting arm is fixedly connected to the translation platform.

[0009] Preferably, a truss platform is fixedly installed on the side of the load-bearing folding plate away from the double-axis cylinder, and a second single-axis cylinder is fixedly installed on the bottom of the truss platform. The output shaft of the second single-axis cylinder passes through the truss platform and is slidably connected to the truss platform, and the output shaft of the second single-axis cylinder is fixedly connected to the hollow frame seat.

[0010] Preferably, the clamping and positioning mechanism includes a pushing screw, which is rotatably installed in the hollow frame base, and one end of the pushing screw extends outside the hollow frame base. A linkage seat is threadedly installed on the pushing screw. Two pushing rods are fixedly installed on the top of the linkage seat. The tops of the two pushing rods both extend above the hollow frame base and are slidably connected to the top of the hollow frame base. A single-port connection box is fixedly installed on the top of the hollow frame base. A bidirectional screw is rotatably installed in the single-port connection box. Two connecting pieces are threadedly installed on the bidirectional screw. One side of each of the two connecting pieces close to the abutting piece extends outside the single-port connection box. A correcting panel is fixedly installed on one side of each of the two connecting pieces close to the abutting piece. The bottoms of the two correcting panels are both in contact with the top of the hollow frame base. A plurality of balls are embedded on one side of the two correcting panels close to each other.

[0011] Preferably, two stabilizing folding rods are fixedly installed on the top of the hollow frame base. A support seat is fixedly installed at one end of each of the two stabilizing folding rods close to the abutting piece. A same rotating shaft is rotatably installed on one side of the two support seats close to each other. A servo motor is fixedly installed on one side of one of the support seats. The output shaft of the servo motor is fixedly connected to one end of the rotating shaft. A swinging arm is fixedly installed on the rotating shaft. A third single-axis cylinder is fixedly installed on the top of the swinging arm. The output shaft of the third single-axis cylinder penetrates through the swinging arm and is slidably connected to the swinging arm. A pressing piece is fixedly installed on the output shaft of the third single-axis cylinder. A rubber pad is fixedly installed on the bottom of the pressing piece. Rubber sleeves are covered on both of the two pushing rods.

[0012] Preferably, a first boss is fixedly installed on one side of the hollow frame base away from the load-bearing folding plate. A first tightening screw is threadedly installed on the first boss. The end of the first tightening screw abuts against the pushing screw. A second boss is fixedly installed on one side of the single-port connection box. A second tightening screw is threadedly installed on the second boss. The end of the second tightening screw abuts against the bidirectional screw.

[0013] Preferably, an extending cross platform is fixedly installed on one side of the load-bearing folding plate away from the hollow frame base. A single-port installation box is fixedly installed on the top of the extending cross platform. A blower is fixedly installed in the single-port installation box. An air distribution duct is arranged above the extending cross platform. One end of a first air duct is fixedly installed on the bottom of the air distribution duct. The other end of the first air duct extends into the single-port installation box and is fixedly connected to the air outlet port of the blower. One end of each of two second air ducts is fixedly installed on the air distribution duct. The other ends of the two second air ducts are both fixedly installed with metal bellows. One ends of the two metal bellows close to each other are both fixedly installed with expansion joints.

[0014] Preferably, two brackets are fixedly installed on the top of the extension cross table, both ends of the air distribution duct are fixedly connected to the two brackets respectively, reinforcing folding rods are fixedly installed on both sides of the load-bearing folding plate, and the ends of the two reinforcing folding rods are fixedly connected to the two second air ducts respectively.

[0015] Preferably, a sealing cover is fixedly installed on the opening side of the single-port installation box through bolts, a circular filter screen is provided on the sealing cover, an air inlet hopper is fixedly installed on the air inlet port of the blower, one side of the air inlet hopper is in contact with the sealing cover, and the diameter of the air inlet hopper is larger than the diameter of the circular filter screen.

[0016] Compared with the related art, the sensor welding jig provided by the present invention has the following beneficial effects: First, through the multiple hollow rectangular sleeves provided in the present invention, the corresponding number of hollow rectangular sleeves can be selected according to the actual number of metal lead welds for fixing the metal leads. Moreover, by using the abutting pieces, the ends of the multiple metal leads for welding can be aligned. Then, the output shaft of the second single-axis cylinder drives the hollow frame base to rise, and after the pins of the temperature-sensitive element are attached to the metal leads, the welding operation can be carried out. During the entire welding process, it can be ensured that the metal leads and the pins of the temperature-sensitive element will not separate, thus avoiding the occurrence of false soldering. Second, through the provided push rod that can move horizontally, the push panel that can move horizontally longitudinally, and the pressing piece that can move up and down, the temperature-sensitive elements of different sizes can be clamped and fixed, and then the subsequent welding work can be smoothly carried out, improving the scope of application and being more flexible to use. Third, through the provided positioning stop strips, it can be ensured that the pins on the temperature-sensitive element can all move to the correct welding positions. At the same time, through the contact method between the translation table and the positioning stop strips, the multiple metal leads can also move to the correct welding positions, ensuring the welding accuracy. And in each welding operation, multiple metal leads can be welded continuously without repeated positioning and fitting, greatly improving the welding efficiency. Description of the Drawings

[0017] Figure 1 It is the front view schematic diagram of the first embodiment of the sensor welding jig provided by the present invention; Figure 2 It is the internal structure schematic diagram of the hollow frame base in the first embodiment of the sensor welding jig provided by the present invention; Figure 3 It is the connection structure schematic diagram of the double-axis cylinder and the abutting piece in the first embodiment of the sensor welding jig provided by the present invention; Figure 4 It is the installation structure schematic diagram of the positioning stop strip in the first embodiment of the sensor welding jig provided by the present invention; Figure 5 A schematic diagram of the connection structure between the hollow frame seat and the single-port connection box in the first embodiment of the sensor welding fixture provided by the present invention; Figure 6 A schematic side cross-sectional structural diagram of a hollow frame seat in a first embodiment of a sensor welding jig provided by the present invention; Figure 7 A schematic diagram of the assembly structure of two U-shaped racks and a plurality of toggle plates in the first embodiment of the sensor welding jig provided by the present invention; Figure 8 A schematic cross-sectional view of the hollow rectangular sleeve in the first embodiment of the sensor welding jig provided by the present invention; Figure 9 A schematic diagram of the placement of the temperature sensing element and the metal lead in the first embodiment of the sensor welding jig provided by the present invention; Figure 10 A schematic diagram of the contact state of the swing arm and the limit plate in the first embodiment of the sensor welding fixture provided by the present invention; Figure 11 A front view schematic diagram of a second embodiment of a sensor welding jig provided by the present invention; Figure 12 A schematic cross-sectional view of a single-port mounting box in a second embodiment of a sensor welding jig provided by the present invention; Figure 13 This is a schematic structural diagram of the sealing cover in the second embodiment of the sensor welding fixture provided by the present invention.

[0018] Numbers in the figure: 1. load-bearing folding plate; 2. double-axis cylinder; 3. abutment plate; 4. translation table; 5. shaped frame rod; 6. toggle plate; 7. hollow rectangular sleeve; 8. metal wire trough; 9. first single-axis cylinder; 10. clamping strip; 11. scale strip; 12. positioning strip; 13. retaining thread head; 14. rodless cylinder; 15. positioning stop strip; 16. truss table; 17. second single-axis cylinder; 18. hollow frame seat; 19. push screw; 20. linkage seat; 21. push rod; 22. single port Connecting box; 23. Bidirectional screw; 24. Connecting piece; 25. Push-up panel; 26. Ball bearing; 27. Support seat; 28. Rotating shaft; 29. ​​Swing arm; 30. Third single-axis cylinder; 31. Lower pressure piece; 32. Extended horizontal platform; 33. Single-port installation box; 34. Blower; 35. Bracket; 36. Air distribution duct; 37. First air duct; 38. Second air duct; 39. Metal bellows; 40. Expansion joint; 41. Sealing cover; 42. Round filter; 43. Air inlet hopper. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0020] First embodiment: Please refer to Figures 1-10 In the first embodiment of the present invention, the sensor welding fixture includes: a load-bearing folding plate 1, and a double-axis cylinder 2 is fixedly installed on the load-bearing folding plate 1, and a support piece 3 is fixedly installed on its output shaft, and the support piece 3 extends to the top of the load-bearing folding plate 1 and is movably connected to the top of the load-bearing folding plate 1. The support piece 3 can provide the function of end point alignment for multiple metal leads. A translation platform 4 is provided on the top of the load-bearing folding plate 1, and two U-shaped racks 5 are fixedly installed on the top of the translation platform 4. Multiple toggle pieces 6 are slidably installed on the two U-shaped racks 5. A hollow rectangular sleeve 7 is fixedly installed on the top of the multiple toggle pieces 6, and a metal wire groove 8 is opened on the bottom inner wall of the multiple hollow rectangular sleeves 7 for placing the metal lead so that the metal lead can be in the middle position inside the hollow rectangular sleeve 7. A pressing strip 10 is provided in the multiple hollow rectangular sleeves 7. A first single-axis cylinder 9 is fixedly installed on the top of the multiple hollow rectangular sleeves 7. The output shafts of 9 extend into multiple hollow rectangular sleeves 7 respectively and are fixedly connected with the corresponding clamping strips 10. The output shafts of multiple first single-axis cylinders 9 are slidably connected with the tops of multiple hollow rectangular sleeves 7 respectively. By extending the output shafts of the first single-axis cylinders 9, the clamping strips 10 can be used to clamp the metal leads to ensure the stability of the welding process. In addition, in order to ensure that the clamping strips 10 can be lifted and lowered linearly, two first guide rods are slidably installed on the top of the hollow rectangular sleeve 7, and the bottom ends of the two first guide rods are fixed to the clamping strips 10; and a positioning stopper strip 15 is fixedly installed on the top of the load-bearing folding plate 1, which can guide the pins of the temperature-sensing element and the ends of the metal leads to move to the specified welding position to improve the welding accuracy. A hollow frame seat 18 is provided on one side of the load-bearing folding plate 1, on which the temperature-sensing element to be welded can be placed, and in order to clamp and position the temperature-sensing element, a clamping and positioning mechanism is provided on the hollow frame seat 18.

[0021] Please refer to Figure 5, in the clamping and positioning mechanism proposed by the above method, there is a pushing screw 19, which is rotatably installed in the hollow frame base 18, and one end of the pushing screw 19 extends outside the hollow frame base 18 for convenient manual rotation. In addition, a first boss is fixedly installed on the side of the hollow frame base 18 away from the load-bearing folding plate 1, and a first tightening screw is threadedly installed thereon. The end of the first tightening screw abuts against the pushing screw 19 to prevent it from rotating on its own. A linkage seat 20 is threadedly installed on the pushing screw 19, and two pushing rods 21 are fixedly installed on the top of the linkage seat 20. The distance between the two pushing rods 21 is relatively narrow, completely less than the width of the temperature-sensitive element with the smallest size, so it has a high degree of adaptability. And the two pushing rods 21 can push the pins on the temperature-sensitive element onto the positioning stop bar 15, thereby improving the accuracy of the welding point. The tops of the two pushing rods 21 both extend above the hollow frame base 18 and are slidably connected to the top of the hollow frame base 18. A single-port connection box 22 is fixedly installed on the top of the hollow frame base 18. A bidirectional screw 23 is rotatably installed therein, and a second boss is fixedly installed on one side of the single-port connection box 22, and a second tightening screw is threadedly installed thereon. The end of the second tightening screw abuts against the bidirectional screw 23 to prevent it from rotating on its own. Two connecting pieces 24 are threadedly installed on the bidirectional screw 23. At the same time, two longitudinal rods are fixed in the single-port connection box 22. The two longitudinal rods pass through the two connecting pieces 24 and are slidably connected to the two connecting pieces 24 to ensure the stability of their movement. The sides of the two connecting pieces 24 close to the abutting piece 3 both extend outside the single-port connection box 22, and a pushing and correcting panel 25 is fixedly installed on each of them. The bottoms of the two pushing and correcting panels 25 are both in contact with the top of the hollow frame base 18. A plurality of balls 26 are inlaid on the sides of the two pushing and correcting panels 25 close to each other. The two pushing and correcting panels 25 are distributed one in front of the other, and the temperature-sensitive element between them can be pushed to the longitudinal center position.

[0022] Please refer to Figure 5In this method, in order to be able to press the temperature sensing element from top to bottom to prevent it from loosening up and down during welding, two stable folding rods are fixedly installed on the top of the hollow frame seat 18, and the ends of the two stable folding rods close to the abutment sheet 3 are fixedly installed with support seats 27, and the two support seats 27 are rotatably installed on the side close to each other with the same rotating shaft 28. A servo motor is fixedly installed on one side of one of the support seats 27, and its output shaft is fixedly connected to one end of the rotating shaft 28. A swing arm 29 is fixedly installed on the rotating shaft 28. The swing arm A third single-axis cylinder 30 is fixedly installed on the top of 29, and its output shaft passes through the swing arm 29 and is slidably connected to the swing arm 29, and a lower pressure plate 31 is fixedly installed on the output shaft of the third single-axis cylinder 30, and a rubber pad is fixedly installed on the bottom of the lower pressure plate 31, and both push rods 21 are covered with rubber sleeves, which can prevent the temperature sensing element from being hard squeezed and reduce the possibility of damage. In addition, a third guide rod is slidably installed on the swing arm 29, and the bottom end of the third guide rod is fixed to the lower pressure plate 31 to prevent the lower pressure plate 31 from rotating.

[0023] Please refer to Figure 10 A same limiting plate is fixed between the two support seats 27, the top of the limiting plate contacts the bottom of the swing arm 29, and the limiting plate and the top end surface of the hollow frame seat 18 are designed to be horizontal, so that the bottom of the lower pressing plate 31 can be parallel to the top of the hollow frame seat 18, so that it can be firmly pressed on the temperature sensing element.

[0024] Please refer to Figure 7 In the present method, in order to accurately adjust the position of the hollow rectangular sleeve 7, a scale bar 11 is fixedly installed on the top of the translation stage 4, and a plurality of toggle pieces 6 are fixedly installed with a positioning bar 12 on one side away from the abutting piece 3, and the central axis of the positioning bar 12 is on the same vertical plane as the axis of the metal wire groove 8, which is convenient for positioning. The plurality of positioning bars 12 are all located above the scale bar 11, and a plurality of toggle pieces 6 are threadedly installed with a retaining thread head 13 on one side away from the abutting piece 3, and the end of the retaining thread head 13 is in conflict with the corresponding 冂-shaped frame rod 5. By screwing the retaining thread head 13, the toggle piece 6 and the 冂-shaped frame rod 5 can slide, and then the position of the hollow rectangular sleeve 7 can be accurately adjusted by observing the direction of the positioning bar 12.

[0025] Please refer to Figure 3In this method, in order to drive the hollow rectangular sleeve 7 to move horizontally and make the clamped metal lead move smoothly to the designated welding position, a rodless cylinder 14 is fixedly installed on the inner side of the load-bearing folding plate 1, and a connecting arm is fixedly installed on its slider. The top of the connecting arm passes through the load-bearing folding plate 1 and is slidably connected to the load-bearing folding plate 1, and the top of the connecting arm is fixedly connected to the translation stage 4; and, in order to make the pin of the temperature sensing element contact with the end portion of the metal lead, a truss table 16 is fixedly installed on the side of the load-bearing folding plate 1 away from the dual-axis cylinder 2, and a second single-axis cylinder 17 is fixedly installed at the bottom of the truss table 16, and its output shaft passes through the truss table 16 and is slidably connected to the truss table 16, and the output shaft of the second single-axis cylinder 17 is fixedly connected to the hollow frame seat 18. In addition, a second guide rod is slidably installed on the truss table 16, and the top of the second guide rod is fixed to the hollow frame seat 18.

[0026] In this embodiment In the initial state, the output shaft of the dual-shaft cylinder 2 is in an extended state; When the metal lead needs to be welded to the pin of the temperature sensing element, the temperature sensing element is first placed on the top of the hollow frame 18 and between the two push-up panels 25, and then the second tightening screw is screwed counterclockwise to separate it from the bidirectional screw 23, and then the bidirectional screw 23 is rotated clockwise to make the two connecting pieces 24 approach each other, until the balls 26 on the two connecting pieces 24 are in contact with the temperature sensing element, and then the rotation of the bidirectional screw 23 is stopped, and then the second tightening screw is rotated clockwise to position the bidirectional screw 23; At this time, the pin of the temperature sensing element has not yet contacted the positioning stop bar 15, so the first tightening screw can be turned counterclockwise to separate it from the pushing screw 19, and then the pushing screw 19 is turned clockwise, and the linkage seat 20 thereon moves horizontally with the two push rods 21. During the movement, it gradually approaches the temperature sensing element until the two push rods 21 both contact the temperature sensing element, and then starts to push the temperature sensing element to move horizontally until the pin on the temperature sensing element contacts the positioning stop bar 15, stops rotating the pushing screw 19, and then turns the first tightening screw clockwise to make it contact with the pushing screw 19 again to form a positioning effect, and then, starts to extend the output shaft of the third single-axis cylinder 30, and can bring the lower pressing plate 31 down, and finally forms a compression on the temperature sensing element from above; Then, select the corresponding number of hollow rectangular sleeves 7 according to the number of metal leads to be welded. When selecting, start from the first hollow rectangular sleeve 7, screw the retaining thread head 13 thereon to separate it from the yoke-shaped frame rod 5, and then move the hollow rectangular sleeve 7, the moving piece 6 will move on the two yoke-shaped frame rods 5, at this time, observe the position of the corresponding positioning strip 12 on the scale strip 11, until it moves to the specified scale line, and then screw the retaining thread head 13 again, at this time, the hollow rectangular sleeve 7 is aligned with the first pin on the temperature sensing element in the horizontal direction; After that, in the same manner as above, the subsequent hollow rectangular sleeves 7 can be adjusted to the specified positions in sequence. Then, multiple metal leads are respectively placed in the metal wire grooves 8 in the hollow rectangular sleeves 7 with adjusted positions, and the end parts of the multiple metal leads are brought into contact with the abutting pieces 3, so as to form an effect of aligned ends. After that, the output shafts of the corresponding number of first single-axis cylinders 9 are started to extend, and the corresponding metal leads can be pressed by the corresponding pressing strips 10. Immediately afterwards, the output shaft of the double-axis cylinder 2 is started to retract, driving the abutting piece 3 downward, and finally making it not protrude above the top of the load-bearing folding plate 1. Then, the rodless cylinder 14 is started, and the slider on it drives the translation table 4 to horizontally move towards the temperature sensing element until one side of the translation table 4 contacts the positioning stop bar 15. At this time, the end of the metal lead is located directly above the pin. Immediately afterwards, the output shaft of the second single-axis cylinder 17 is started to extend, and the entire hollow frame base 18 starts to rise, finally making each pin contact the end of each metal lead one by one. Then, a welding tool can be held for welding operations; After welding is completed, first, the output shaft of the first single-axis cylinder 9 is started to retract to separate the pressing strip 10 from the metal lead. Immediately afterwards, the slider on the rodless cylinder 14 is started to return. At the same time, the output shaft of the third single-axis cylinder 30 is started to retract to separate the pressing piece 31 from the temperature sensing element. Immediately afterwards, the servo motor is started in the forward direction, and its output shaft drives the rotating shaft 28 to rotate, and then it can drive the swing arm 29 to rotate, rotating the pressing piece 31 out from above the temperature sensing element. Then, the temperature sensing element that has been welded together with the metal lead is taken out. Then, the output shaft of the double-axis cylinder 2 is started to extend, making the abutting piece 3 rise above the load-bearing folding plate 1 again. Immediately afterwards, the next batch of metal leads is reloaded into the hollow rectangular sleeve 7, and the next temperature sensing element to be welded is placed on the hollow frame base 18, and then the next positioning and welding process can be continued. In this way, it can be repeated until all welding is completed.

[0027] Compared with the related technology, the sensor welding jig provided by the present invention has the following beneficial effects: First, through the multiple hollow rectangular sleeves 7 provided in the present invention, the corresponding number of hollow rectangular sleeves 7 can be selected according to the actual number of metal lead welds for fixing and using the metal leads. And, by using the abutting pieces 3, the ends of the multiple metal leads for welding can be aligned. Immediately afterwards, the output shaft of the second single-axis cylinder 17 drives the hollow frame base 18 to rise, and after the pins of the temperature sensing element are fitted with the metal leads, welding operations can be carried out. During the entire welding process, it can be ensured that the metal leads and the pins of the temperature sensing element will not be separated, thus avoiding the occurrence of virtual soldering; II. By providing a pushing rod 21 capable of horizontal movement, a pushing and straightening panel 25 capable of longitudinal horizontal movement, and a pressing piece 31 capable of vertical lifting, the present invention can clamp and fix temperature-sensitive elements of different sizes, and then smoothly carry out subsequent welding work, improving the scope of application and being more flexible in use; III. By providing a positioning stop bar 15, the present invention can ensure that the pins on the temperature-sensitive element can all move to the correct welding position. At the same time, through the contact mode between the translation stage 4 and the positioning stop bar 15, multiple metal leads can also move to the correct welding position, ensuring welding accuracy. Moreover, in each welding operation, multiple metal leads can be continuously welded without repeated positioning and fitting, greatly improving the welding efficiency.

[0028] Second Embodiment: Based on the sensor welding jig provided in the first embodiment of the present application, the second embodiment of the present application proposes another sensor welding jig. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0029] The following further describes the second embodiment of the present invention in conjunction with the drawings and embodiments.

[0030] Please refer to Figures 11-13 , the sensor welding jig further includes an extended cross table 32, which is fixedly installed on the side of the load-bearing folding plate 1 away from the hollow frame base 18. In order to improve the stability of the extended cross table 32, two support rods are fixed at the bottom of the extended cross table 32. A single-port mounting box 33 is fixedly installed on the top of the extended cross table 32. A blower 34 is fixedly installed in the single-port mounting box 33. Above the extended cross table 32, there is an air distribution duct 36. One end of a first air duct 37 is fixedly installed at the bottom of the air distribution duct 36, and the other end of the first air duct 37 extends into the single-port mounting box 33 and is fixedly connected to the air outlet port of the blower 34. One end of two second air ducts 38 is fixedly installed on the air distribution duct 36, and the other ends of the two second air ducts 38 are both fixedly installed with metal bellows 39. One ends of the two metal bellows 39 close to each other are both fixedly installed with expansion joints 40. The metal bellows 39 has telescopic ductility and can adjust the expansion joints 40 to the required positions for blowing and heat dissipation.

[0031] In the above - mentioned method, in order to position the air - distributing duct 36, two brackets 35 are fixedly installed on the top of the extending horizontal table 32. The two ends of the air - distributing duct 36 are respectively fixedly connected to the two brackets 35. Reinforcing folding rods are fixedly installed on both sides of the load - bearing folding plate 1, and the end parts of the two reinforcing folding rods are respectively fixedly connected to the two second air ducts 38. And, a sealing cover 41 is fixedly installed on the opening side of the single - port installation box 33 through bolts. A circular filter net 42 is provided on the sealing cover 41. An air inlet hopper 43 is fixedly installed on the air inlet port of the blower 34. One side of the air inlet hopper 43 is in contact with the sealing cover 41, and the diameter of the air inlet hopper 43 is larger than the diameter of the circular filter net 42, so as to filter the incoming air and reduce the adverse impact of large - particle impurities on the solder joints.

[0032] In this embodiment When the welding between the pins and the metal leads is completed, in order to quickly cool and solidify the solder joint part, after the welding is completed, first pull the two expansion joints 40 in the direction of approaching each other, so that the two expansion joints 40 are respectively close to both sides of the temperature - sensing element, thus getting close to the welding part. Then start the blower 34. The blower 34 can finally spray the extracted air flow through the metal bellows 39, so that it can blow on the welding part, accelerating the cooling and solidifying speed of the solder joint. At the same time, it can also quickly move on to the next welding operation, further improving the welding efficiency. And when the blower 34 extracts external air, the provided circular filter net 42 can filter the inhaled air, thus avoiding the adverse impact of large - particle dust on the solder joint part, improving the welding yield. And subsequently, by removing the sealing cover 41 from the single - port installation box 33, the circular filter net 42 can be patted to remove dust, ensuring its filtering performance.

[0033] The above - mentioned are only the embodiments of the present invention, and thus do not limit the patent scope of the present invention. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, directly or indirectly applied in other related technical fields, are similarly included in the patent protection scope of the present invention.

Claims

1. A sensor welding jig, comprising a load-bearing folding plate, characterized in that: The load-bearing folding plate is fixedly installed with a double-axis cylinder, and an abutment sheet is fixedly installed on the output shaft of the double-axis cylinder, and the abutment sheet extends to the top of the load-bearing folding plate and is movably connected to the top of the load-bearing folding plate, and a translation platform is provided on the top of the load-bearing folding plate, and two U-shaped frame rods are fixedly installed on the top of the translation platform, and a plurality of toggle plates are slidably installed on the two U-shaped frame rods, and the tops of the plurality of toggle plates are fixedly installed with hollow rectangular sleeves, and metal wire grooves are opened on the bottom inner walls of the plurality of hollow rectangular sleeves, and pressure strips are provided in the plurality of hollow rectangular sleeves, and a first single-axis cylinder is fixedly installed on the tops of the plurality of hollow rectangular sleeves, and the output shafts of the plurality of first single-axis cylinders respectively extend into the plurality of hollow rectangular sleeves and are fixedly connected to the corresponding pressure strips, and the output shafts of the plurality of first single-axis cylinders are respectively slidably connected to the tops of the plurality of hollow rectangular sleeves; A positioning stop bar is fixedly installed on the top of the load-bearing folding plate, and a hollow frame seat is provided on one side of the load-bearing folding plate for placing the temperature sensing element to be welded. A clamping positioning mechanism is provided on the hollow frame seat for fixing the temperature sensing element.

2. The sensor welding jig according to claim 1, characterized in that: A scale bar is fixedly installed on the top of the translation table, and positioning bars are fixedly installed on the side of the multiple toggle pieces away from the abutment piece, and the multiple positioning bars are all located above the scale bar. A retaining thread head is threadedly installed on the side of the multiple toggle pieces away from the abutment piece, and the end of the retaining thread head is in conflict with the corresponding U-shaped frame rod.

3. The sensor welding jig according to claim 2, characterized in that: A rodless cylinder is fixedly installed on the inner side of the load-bearing folding plate, a connecting arm is fixedly installed on the slider of the rodless cylinder, the top of the connecting arm passes through the load-bearing folding plate and is slidably connected to the load-bearing folding plate, and the top of the connecting arm is fixedly connected to the translation platform.

4. The sensor welding jig according to claim 1, characterized in that: A truss platform is fixedly installed on one side of the load-bearing folding plate away from the double-axis cylinder, and a second single-axis cylinder is fixedly installed on the bottom of the truss platform. The output shaft of the second single-axis cylinder passes through the truss platform and is slidably connected to the truss platform, and the output shaft of the second single-axis cylinder is fixedly connected to the hollow frame seat.

5. The sensor welding jig according to claim 4, characterized in that: The clamping positioning mechanism includes a pushing screw, which is rotatably installed in the hollow frame seat, and one end of the pushing screw extends to the outside of the hollow frame seat, and a linkage seat is threadedly installed on the pushing screw, and two push rods are fixedly installed on the top of the linkage seat, and the top ends of the two push rods extend to the top of the hollow frame seat and are slidably connected to the top of the hollow frame seat. A single-port connection box is fixedly installed on the top of the hollow frame seat, and a bidirectional screw is rotatably installed in the single-port connection box, and two connecting pieces are threadedly installed on the bidirectional screw, and one side of the two connecting pieces close to the abutting piece extends to the outside of the single-port connection box, and one side of the two connecting pieces close to the abutting piece is fixedly installed with a pushing panel, and the bottoms of the two pushing panels are in contact with the top of the hollow frame seat, and the two pushing panels are inlaid with multiple balls on the sides close to each other.

6. The sensor welding jig according to claim 5, characterized in that: Two stable folding rods are fixedly installed on the top of the hollow frame seat, and the two stable folding rods are fixedly installed with support seats at one end close to the abutment plate. The two support seats are rotatably installed with the same rotating shaft on one side close to each other, and a servo motor is fixedly installed on one side of one of the support seats, and the output shaft of the servo motor is fixedly connected to one end of the rotating shaft, and a swing arm is fixedly installed on the rotating shaft, and a third single-axis cylinder is fixedly installed on the top of the swing arm, and the output shaft of the third single-axis cylinder passes through the swing arm and is slidably connected to the swing arm, and a lower pressure plate is fixedly installed on the output shaft of the third single-axis cylinder, and a rubber pad is fixedly installed on the bottom of the lower pressure plate, and the two push rods are covered with rubber sleeves.

7. The sensor welding jig according to claim 5, characterized in that: A first boss is fixedly installed on one side of the hollow frame seat away from the load-bearing folding plate, a first tightening screw is threadedly installed on the first boss, and an end of the first tightening screw conflicts with the pushing screw; a second boss is fixedly installed on one side of the single-port connecting box, a second tightening screw is threadedly installed on the second boss, and an end of the second tightening screw conflicts with the bidirectional screw.

8. The sensor welding jig according to claim 1, characterized in that: An extension platform is fixedly installed on one side of the load-bearing folding plate away from the hollow frame seat, a single-port mounting box is fixedly installed on the top of the extension platform, a blower is fixedly installed in the single-port mounting box, an air distribution duct is provided above the extension platform, one end of a first air duct is fixedly installed on the bottom of the air distribution duct, the other end of the first air duct extends into the single-port mounting box and is fixedly connected to the air outlet port of the blower, one end of two second air ducts is fixedly installed on the air distribution duct, the other ends of the two second air ducts are fixedly installed with metal bellows, and the ends of the two metal bellows close to each other are fixedly installed with expansion joints.

9. The sensor welding jig according to claim 8, characterized in that: Two brackets are fixedly installed on the top of the extended horizontal platform, and the two ends of the air distribution duct are fixedly connected to the two brackets respectively. Reinforcement folding rods are fixedly installed on both sides of the load-bearing folding plate, and the ends of the two reinforcement folding rods are fixedly connected to the two second air ducts respectively.

10. The sensor welding jig according to claim 8, characterized in that: A sealing cover is fixedly installed on the opening side of the single-port installation box by bolts, and a circular filter screen is provided on the sealing cover. An air inlet scoop is fixedly installed on the air inlet port of the blower, one side of the air inlet scoop is in contact with the sealing cover, and the diameter of the air inlet scoop is larger than the diameter of the circular filter screen.

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