Automatic laser welding equipment for temperature sensor

Abstract

The invention belongs to the technical field of welding, and relates to automatic laser welding equipment for a temperature sensor, which comprises a jig transplanting unit used for fixing a flat cable of the temperature sensor and driving the flat cable to move along a preset direction; the shaping unit is used for shaping the connecting part between the connecting end of the flat cable of the temperature sensor on the jig transplanting unit and the pin of the thermistor; and the welding unit is used for welding the connection part between the connection end of the flat cable of the temperature sensor shaped by the shaping unit and the pin of the thermistor. After the structure is adopted, the beneficial effects are that when a plurality of temperature sensors are welded, the pins of the thermistors may deviate or have different high and low positions, so that the welding instability is caused, and the yield is influenced; through cooperation of the shaping units, pins of different products are protected at the same height during welding, it is ensured that the energy error of each welding spot is as small as possible, and therefore the yield is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of temperature sensor production, and in particular relates to laser automatic welding equipment for temperature sensors. Background Art

[0002] In the precision manufacturing process of NTC (negative temperature coefficient) temperature sensors, firmly and reliably welding highly sensitive thermistors to precision wiring is a key step in building the core performance of the product.

[0003] At present, manual welding is still widely used in this key link. The quality of products welded by manual welding is unstable, which affects the yield rate. In addition, the speed of manual welding is relatively slow and inefficient. It is difficult to meet the market demand for temperature sensors. Therefore, it is necessary to make improvements. Summary of the invention

[0004] In order to solve the above problems in the prior art, the present invention provides a laser automatic welding device for a temperature sensor.

[0005] To achieve the above object, the present invention adopts the following technical solutions: As one aspect of the present invention, a laser automatic welding device for a temperature sensor is provided, which comprises: a jig transfer unit, which is used to fix the cable of the temperature sensor and move it along a preset direction; the jig transfer unit comprises a slide table, on which a plurality of sequentially arranged wire clamping jigs are slidably connected, and the plurality of wire clamping jigs move sequentially on the slide table; the wire clamping jig comprises a jig body, and a plurality of cable grooves for installing the cable are arranged at intervals on the upper surface of the jig body; a plurality of clamping mechanisms are respectively provided on both sides of the jig body, and each of the two ends of each cable groove corresponds to a clamping mechanism, and the clamping mechanism clamps the cable in the cable groove; A shaping unit is used to shape the connection between the connection end of the temperature sensor cable and the pin of the thermistor on the jig transfer unit; The welding unit welds the connection between the connection end of the temperature sensor cable shaped by the shaping unit and the pin of the thermistor.

[0006] Furthermore, it also includes a clamping unit, which clamps the cable of the temperature sensor; the clamping unit includes a first clamping plate and a second clamping plate arranged opposite to each other, and the first clamping plate and the second clamping plate are respectively movably connected to the clamping support frame; the clamping support frame is provided with a clamping power part, and the first clamping plate and the second clamping plate are respectively connected to the movable end of the clamping power part; The end surface of the first clamping plate and the end surface of the second clamping plate respectively form clamping bosses, and the two clamping bosses move relative to each other to clamp the cable together.

[0007] Furthermore, it also includes a clamping unit, which clamps the cable of the temperature sensor clamped by the clamping unit; the clamping unit includes a clamping bracket, and a clamping power unit is connected to the clamping bracket; the movable end of the clamping power unit is connected to a second pressure plate.

[0008] Further, the clamping mechanism includes a clamping connection column, a clamping seat, a clamping claw and a first elastic member connected to or integrally formed with the fixture body, the clamping seat is provided with a clamping seat connection through hole, the clamping claw is provided with a clamping claw connection through hole, the clamping seat is formed with a clamping claw installation space, the clamping claw is movably arranged in the clamping claw installation space of the clamping seat, the first elastic member is connected between the clamping seat and the clamping claw, and the clamping claw is located in the clamping claw installation space; at this time, the center line of the clamping seat connection through hole coincides with the center line of the clamping claw connection through hole, and then the clamping seat and the clamping claw are movably arranged on the clamping connection column together; the clamping claw can rotate relative to the clamping connection column; A hook portion and a handle portion are formed on the clamping claw; a preset interval is provided between two adjacent clamping seats, and the preset interval facilitates the operation of the handle portion of the clamping claw; the hook portion clamps the cable on the cable slot under the action of the first elastic member; a clamping seat yielding groove is formed on the side of the clamping seat, and when the clamping claw is arranged in the clamping claw installation space, the handle portion passes through the clamping seat yielding groove to facilitate the operation of the handle portion by external force, so that the hook portion is disengaged from the cable.

[0009] Furthermore, the clamping seat and the clamping claw are respectively provided with a first mounting groove matched with the first elastic member.

[0010] Furthermore, a holder limiting groove adapted to the holder is formed on the fixture body, and the holder limiting groove limits the holder.

[0011] Furthermore, a clamping block is provided on the fixture body, and the clamping block cooperates with the upper surface of the clamping seat; and a cable clearance groove is provided on the clamping seat.

[0012] Furthermore, it also includes a discharge mechanism, which overcomes the elastic force of the first elastic member to lift the handle of the claw, so that the hook portion is free from the restriction on the cable arrangement; the discharge mechanism cooperates with the corresponding cable clamping fixture; The unloading mechanism includes a top plate, and a top handle is formed on the upper part of the top plate. The top handle moves up and down within a preset interval between two adjacent clamping seats, and the top handle is located below the handle portion of the corresponding clamping claw. When the top handle moves upward, the top handle lifts the handle portion of the clamping claw upward, the first elastic member is compressed, and the hook portion rotates with the clamping connecting column as a fulcrum; the lower part of the top plate is connected to the movable end of the unloading power unit.

[0013] Furthermore, the shaping unit comprises a shaping support frame, on which a first shaping plate and a second shaping plate arranged at intervals are movably connected, the first shaping plate and the second shaping plate are arranged opposite to each other, and the first shaping plate and the second shaping plate are close to or far away from each other on the shaping support frame; The first shaping plate is connected to the movable end of the first power part arranged on the shaping support frame; The second shaping plate is connected to the movable end of the second power unit provided on the shaping support frame; the end surface of the first shaping plate and the end surface of the second shaping plate are respectively formed with shaping bosses; The shaping unit also includes a first clamping mechanism, which clamps the wires on the wire clamping fixture; the first clamping mechanism includes a first pressing plate, which is movably connected to the shaping support frame; the first pressing plate is connected to the movable end of the third power unit provided on the shaping support frame.

[0014] Further, the welding unit includes an X-arm module, a Y-arm module, a Z-arm module and a welder, the fixed part of the Y-arm module is connected to the movable part of the X-arm module, the fixed part of the Z-arm module is connected to the movable part of the Y-arm module; the welder is connected to the movable part of the Z-arm module.

[0015] The beneficial effects of the laser automatic welding equipment for temperature sensors of the present invention are specifically embodied in the following aspects: when welding a plurality of temperature sensors, the pins of each thermistor may be offset or have different height positions, which may lead to welding instability and affect the yield rate; through the cooperation of the shaping unit, the clamping unit and the pressing unit, the pins of different products are protected at the same height during welding, ensuring that the energy error of each welding point is as small as possible, thereby ensuring the yield rate; through the cooperation of the clamping mechanism and the unloading mechanism, the placement and fixation of the product are more convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 It is a structural schematic diagram of the laser automatic welding equipment of the temperature sensor of the present invention; Figure 2 It is a structural schematic diagram of the jig transplanting unit of the present invention; Figure 3 It is an exploded schematic diagram of the jig transplanting unit of the present invention; Figure 4 A bottom view of the structure of the wire clamping fixture of the present invention; Figure 5It is a structural front view of the wire clamping fixture of the present invention; Figure 6 It is a structural side view of the wire clamping fixture of the present invention; Figure 7 for Figure 5 Partial schematic diagram at point A in the middle; Figure 8 for Figure 6 Partial schematic diagram at point B in the middle; Fig. 9 It is a structural exploded view of the clamping mechanism of the present invention; Fig.10 It is a state reference diagram of the discharge mechanism of the present invention; Fig.11 It is a structural stereogram of the unloading mechanism of the present invention; Fig.12 It is a structural stereogram of the shaping unit of the present invention; Fig.13 A state reference diagram of a shaping unit of the present invention; Fig.14 It is a structural front view of the welding unit of the present invention; Fig.15 A structural side view of a welding unit of the present invention; Fig.16 It is a structural stereogram of the clamping unit of the present invention; Fig.17 A state reference diagram of the clamping unit of the present invention; Fig.18 It is a structural stereogram of the pressing unit of the present invention; Description of reference numerals: 1- jig transfer unit; 11- slide; 12- clamping jig; 121- jig body; 122- jig protrusion; 123- cable groove; 124- clamping mechanism; 1241- clamping connection column; 1242- clamping seat; 1243- clamping claw; 1244- clamping seat connecting through hole; 1245- clamping claw connecting through hole; 1246- clamping claw installation space; 1247- first elastic member; 1248- clamping hook; 1249- handle; 12410- clamping seat giving way groove; 12411- first installation groove; 12412- clamping seat limiting groove; 12413- clamping block; 12414- cable giving way groove; 125- unloading mechanism; 1251- top plate; 1252- top handle; 1253- unloading power unit; 2-shaping unit; 21-shaping support frame; 22-first shaping plate; 23-second shaping plate; 24-first power unit; 25-second power unit; 26-first guide sleeve; 27-first guide rod; 28-first guide rail; 29-first slider; 210-first clamping mechanism; 211-shaping boss; 2101-first pressing plate; 2102-third power unit; 2103-second guide sleeve; 2104-second guide rod; 3- welding unit; 31- X robot module; 32- Y robot module; 33- Z robot module; 34- welder; 4-temperature sensor; 41-cable; 42-thermistor; 5-clamping unit; 51-first clamping plate; 52-second clamping plate; 53-clamping support frame; 54-clamping power unit; 55-second guide rail; 56-second slider; 57-second guide rod; 58-second guide sleeve; 59-clamping boss; 510-clamping limit plate; 511-limit plate power unit; 6-pressing unit; 61-pressing bracket; 62-pressing power unit; 63-second pressing plate; 64-third guide sleeve; 65-third guide rod. DETAILED DESCRIPTION

[0018] 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 specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only 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 making creative work are within the scope of protection of the present invention.

[0019] An automatic laser welding device for a temperature sensor according to an embodiment of the present application is as follows: Figure 1-Figure 3 As shown, it includes: a fixture transfer unit 1, which is used to fix the cable 41 of the temperature sensor 4 and move it along a preset direction; it should be noted that when the cable 41 of the temperature sensor 4 and the thermistor 42 are installed on the fixture transfer unit 1, the connection end of the cable 41 of the temperature sensor 4 is pre-connected with the corresponding pin of the thermistor 42, so that the pin of the thermistor 42 and the corresponding connection end of the cable 41 are in a connected state, which is a prior art and will not be repeated; The shaping unit 2 shapes the connection between the connection end of the cable 41 of the temperature sensor 4 on the jig transfer unit 1 and the pin of the thermistor 42; The welding unit 3 welds the connection between the connection end of the cable 41 of the temperature sensor 4 and the pin of the thermistor 42 after being shaped by the shaping unit 2. It should be noted that the structure of the connection end of the cable 41 of the temperature sensor 4 and the thermistor 42 is a prior art and will not be repeated here. The focus of this embodiment is how to weld the connection end of the cable 41 of the temperature sensor 4 and the pin of the thermistor 42.

[0020] In one embodiment, if Figure 1 As shown, a clamping unit 5 is also included to clamp the wiring 41 of the temperature sensor 4 to facilitate welding of the welding unit 3 .

[0021] In one embodiment, if Figure 1 and Figure 3 As shown, a pressing unit 6 is also included to press the flat cable 41 of the temperature sensor 4 clamped by the clamping unit 5 to facilitate welding of the connecting end of the flat cable 41 with the corresponding pin of the thermistor 42 .

[0022] Specifically, Figure 3-Figure 6 As shown, the jig transplanting unit 1 includes a slide 11, and a plurality of wire clamping jigs 12 arranged in sequence are slidably connected to the slide 11. The plurality of wire clamping jigs 12 move on the slide 11 in sequence, and the wire clamping jig 12 travels on the slide 11 at a preset speed to reach a preset workstation; it should be noted that the traveling method of the wire clamping jig 12 on the slide 11 is a prior art and will not be described in detail here; the wire clamping jig 12 includes a jig body 121, and a jig protrusion 122 adapted to the slide 11 is provided at the bottom of the jig body 121, and the jig protrusion 122 cooperates with the slide 11, so that the wire clamping jig 12 is more stable when moving on the slide 11; The upper surface of the fixture body 121 is provided with a plurality of cable slots 123 for installing the cable 41 at intervals. The connecting end of the cable 41 extends to the outside of the cable slot 123 to facilitate welding with the corresponding pin of the thermistor 42. A plurality of clamping mechanisms 124 are respectively disposed on both sides of the long side of the fixture body 121 . Each end of each cable slot 123 corresponds to a clamping mechanism 124 . The clamping mechanisms 124 clamp and fix the cables 41 in the cable slot 123 .

[0023] Furthermore, if Figure 7-Figure 9As shown, the clamping mechanism 124 includes a clamping connection column 1241 connected to or integrally formed with the fixture body 121, a clamping seat 1242, a clamping claw 1243 and a first elastic member 1247, the clamping seat 1242 is provided with a clamping seat connection through hole 1244, the clamping claw 1243 is provided with a clamping claw connection through hole 1245, the clamping seat 1242 is formed with a clamping claw installation space 1246, and the clamping claw 1243 is movably arranged in the clamping claw installation space 1246 of the clamping seat 1242. 246, the first elastic member 1247 is a spring, the first elastic member 1247 is connected between the clamping seat 1242 and the claw 1243, and the claw 1243 is located in the claw installation space 1246; at this time, the center line of the clamping seat connecting through hole 1244 coincides with the center line of the claw connecting through hole 1245, and then, the clamping seat 1242 and the claw 1243 are movably arranged on the clamping connection column 1241; the claw 1243 can rotate relative to the clamping connection column 1241; The clamping claw 1243 is formed with a hook portion 1248 and a handle portion 1249; the hook portion 1248 clamps the cable 41 on the cable slot 123 under the action of the first elastic member 1247; the side of the clamping seat 1242 is formed with a clamping seat giving way groove 12410, and when the clamping claw 1243 is arranged in the clamping claw installation space 1246, the handle portion 1249 passes through the clamping seat giving way groove 12410 to facilitate the operation of the handle portion 1249 by external force, so that the hook portion 1248 is disengaged from the cable 41, and the cable 41 is taken away; The clamping seat 1242 and the clamping claw 1243 are respectively provided with a first installation groove 12411 matched with the first elastic member 1247, so that the first elastic member 1247 can be installed more conveniently.

[0024] Furthermore, a clamping seat limiting groove 12412 adapted to the clamping seat 1242 is formed on the fixture body 121 , and the clamping seat limiting groove 12412 limits the clamping seat 1242 to prevent the clamping seat 1242 from rotating and affecting the effect of the clamping claw 1243 .

[0025] Furthermore, a clamping block 12413 is provided on the fixture body 121 , and the clamping block 12413 cooperates with the upper surface of the clamping seat 1242 to further limit the clamping seat 1242 on the clamping seat limiting groove 12412 .

[0026] Furthermore, a cable clearance groove 12414 is provided on the holder 1242 for accommodating the cable 41 to facilitate installation.

[0027] There is a preset interval between two adjacent clamping seats 1242 , and this preset interval facilitates the operation of the handle portion 1249 of the clamping claw 1243 .

[0028] In one embodiment, if Fig.10As shown, it also includes a discharge mechanism 125, which overcomes the elastic force of the first elastic member 1247 to lift the handle portion 1249 of the claw 1243, so that the hook portion 1248 is free from the restriction on the flat cable 41, making it convenient to place or remove the flat cable 41.

[0029] Specifically, Figure 10-11 As shown, the unloading mechanism 125 is located at a workstation where materials need to be taken or discharged, and cooperates with the corresponding wire clamping fixture 12; the unloading mechanism 125 includes a top plate 1251, and a top handle 1252 is formed on the upper part of the top plate 1251. The top handle 1252 moves up and down within a preset interval between two adjacent clamping seats 1242, and the top handle 1252 is located below the handle portion 1249 of the corresponding clamping claw 1243. When the top handle 1252 moves upward, the top handle 1252 lifts the handle portion 1249 of the clamping claw 1243 upward, the first elastic member 1247 is compressed, and the hook portion 1248 rotates with the clamping connection column 1241 as a fulcrum, thereby breaking away from the restraint on the cable 41; The lower part of the top plate 1251 is connected to the movable end of the unloading power unit 1253. The unloading power unit 1253 is a cylinder or a motor, and its structure is the existing technology and is not described here. Through the operation of the unloading power unit 1253, the top handle 1252 of the top plate 1251 and the corresponding handle part 1249 are lifted up to achieve the detachment of the cable 41, or the handle part 1249 is lifted up to make the hook part 1248 away from the cable clearance groove 12414, so as to facilitate the placement and installation of the cable 41.

[0030] In one embodiment, if Figure 12-13 As shown, the shaping unit 2 includes a shaping support frame 21, on which a first shaping plate 22 and a second shaping plate 23 are movably connected and spaced apart, the first shaping plate 22 and the second shaping plate 23 are arranged opposite to each other, and the first shaping plate 22 and the second shaping plate 23 are close to or far away from each other on the shaping support frame 21; The first shaping plate 22 is connected to the movable end of the first power unit 24 provided on the shaping support frame 21; the first power unit 24 is a cylinder or a motor, which is a prior art and will not be described in detail here; The second shaping plate 23 is connected to the movable end of the second power unit 25 arranged on the shaping support frame 21; the second power unit 25 is a cylinder or a motor, which is the prior art and will not be described here; the first shaping plate 22 is operated by the first power unit 24, and the second shaping plate 23 is operated by the second power unit 25, and the first shaping plate 22 and the second shaping plate 23 move relative to each other, and jointly shape the connection end of the cable 41 of the temperature sensor 4 on the jig transfer unit 1 and the pin of the thermistor 42, so as to facilitate the uniformity of subsequent welding.

[0031] Furthermore, the end faces of the first shaping plate 22 and the second shaping plate 23 are respectively formed with shaping bosses 211, and the two shaping bosses 211 move relative to each other and act together on the connection between the connecting end of the cable 41 of the temperature sensor 4 and the pin of the thermistor 42, resulting in a good shaping effect.

[0032] Furthermore, the shaping support frame 21 is connected to a first guide sleeve 26 , and the first shaping plate 22 is connected to a first guide rod 27 slidably connected to the first guide sleeve 26 , so that the first shaping plate 22 moves more smoothly.

[0033] Furthermore, the shaping support frame 21 is connected to a first guide rail 28 , and the second shaping plate 23 is connected to a first slider 29 slidably connected to the first guide rail 28 , so that the second shaping plate 23 moves more smoothly.

[0034] Furthermore, if Fig.12 As shown, the shaping unit 2 also includes a first clamping mechanism 210, which clamps the wiring harness 41 on the wire clamping fixture 12 to prevent the wiring harness 41 from being affected by the shaping force and being offset during shaping; the first clamping mechanism 210 includes a first pressing plate 2101, which is movably connected to the shaping support frame 21; the first pressing plate 2101 is connected to the movable end of the third power unit 2102 provided on the shaping support frame 21; the third power unit 2102 is a cylinder or a motor, which is the prior art and will not be repeated here; the shaping support frame 21 is connected to a second guide sleeve 2103, and the first pressing plate 2101 is connected to a second guide rod 2104 slidably connected to the second guide sleeve 2103, so that the first pressing plate 2101 is more stable during movement.

[0035] In one embodiment, if Figure 14-15As shown, the welding unit 3 includes an X robot arm module 31, a Y robot arm module 32, a Z robot arm module 33 and a welder 34, the fixed part of the Y robot arm module 32 is connected to the movable part of the X robot arm module 31, the fixed part of the Z robot arm module 33 is connected to the movable part of the Y robot arm module 32; the welder 34 is connected to the movable part of the Z robot arm module 33; the structures of the X robot arm module 31, the Y robot arm module 32 and the Z robot arm module 33 are all prior art and will not be described here. The welder 34 is a laser, and its structure is a prior art, which will not be described here. As an example, there are two lasers and two Z robot modules 33, one laser corresponds to one Z robot module 33, which improves the welding efficiency. There are two X robot modules 31, and the fixed part of the second X robot module 31 is connected to the movable part of the first X robot module 31, so that the welding range can be increased. At this time, the fixed part of the Y robot module 32 is connected to the movable part of the second X robot module 31.

[0036] Since the energy stability of the laser's starting and ending points is poor, triggering the laser in front of the welding position and using the stable laser energy in the middle section for welding can effectively improve the laser welding yield rate; The polarizer method is commonly used to achieve continuous welding by laser. Continuous light is emitted through polarization. Due to the problem of polarization angle, the laser energy will be concentrated in the contact area between the pin of the thermistor and the core of the cable, causing the pin of the thermistor to be welded off. The optimal direction is that the laser welding head is located just above the core of the cable to weld, melt the copper core of the cable into liquid, and then cover the pin of the thermistor to achieve the best welding effect. By using a swinging laser welding head, the X-arm module 31, the Y-arm module 32, and the Z-arm module 33 move and set the laser light frequency, which is determined by the welding product. This is a common technical means in this field and will not be repeated. During the movement of the laser welding head driven by the X-arm module 31, the Y-arm module 32, and the Z-arm module 33, the laser is kept vertically downward to output laser energy throughout the process, so that multiple products in the area can be welded at the same time, changing the conventional single-point welding.

[0037] When welding multiple products, the pins of each thermistor may be offset or have different heights, which will cause welding instability and affect the yield rate. In particular, through the primary shaping and secondary correction mechanism, the pins of different thermistors are protected at the same height during welding, ensuring that the energy error of each soldering point is as small as possible, thereby ensuring the yield rate.

[0038] In one embodiment, if Figure 16-Figure 17As shown, the clamping unit 5 clamps the cable 41 on the cable clamping fixture 12 at a preset position to facilitate the welding work of the welding unit 3; the clamping unit 5 includes a first clamping plate 51 and a second clamping plate 52 arranged opposite to each other, and the first clamping plate 51 and the second clamping plate 52 are respectively movably connected to the clamping support frame 53; a clamping power unit 54 is provided on the clamping support frame 53, and the first clamping plate 51 and the second clamping plate 52 are respectively connected to the movable ends of the clamping power unit 54; the clamping power unit 54 is a cylinder or a motor, which is the prior art and is not described here; as an example, in this embodiment, the clamping power unit 54 is a double-headed cylinder, and the first clamping plate 51 and the second clamping plate 52 are respectively connected to the corresponding movable ends of the double-headed cylinder; the clamping power unit 54 drives the first clamping plate 51 and the second clamping plate 52 to move relative to or towards each other; when the first clamping plate 51 and the second clamping plate 52 move relative to each other, the cable 41 is clamped, and when the first clamping plate 51 and the second clamping plate 52 move towards each other, the cable 41 is released.

[0039] Furthermore, the clamping support frame 53 is provided with a longitudinally arranged second guide rail 55 , and the first clamping plate 51 and the second clamping plate 52 are respectively provided with a second slider 56 slidably connected to the second guide rail 55 , so that the first clamping plate 51 and the second clamping plate 52 can run more smoothly.

[0040] Furthermore, a second guide rod 57 is disposed on the first clamping plate 51 , and a second guide sleeve 58 slidably connected to the second guide rod 57 is disposed on the second clamping plate 52 , so as to further enhance the smooth movement between the first clamping plate 51 and the second clamping plate 52 .

[0041] Furthermore, the end surface of the first clamping plate 51 and the end surface of the second clamping plate 52 respectively form a clamping boss 59 , and the two clamping bosses 59 move relative to each other to clamp the cable 41 together.

[0042] Furthermore, clamping limit plates 510 are respectively provided on both sides of the clamping support frame 53, and the clamping limit plates 510 are located between the first clamping plate 51 and the second clamping plate 52 to prevent the first clamping plate 51 and the second clamping plate 52 from clamping excessively and affecting the placement of the cable 41; the clamping limit plate 510 is arranged at the movable end of the limit plate power part 511 connected to the clamping support frame 53, and the limit plate power part 511 is a cylinder or a motor, which is the prior art and will not be repeated here; the thickness of the clamping limit plate 510 is slightly smaller than the diameter of the cable 41, so that the first clamping plate 51 and the second clamping plate 52 can clamp the cable 41 without damaging the cable 41.

[0043] In one embodiment, if Fig.18 As shown, a pressing unit 6 is also included, and the pressing unit 6 presses the cable 41 clamped by the clamping unit 5 to further strengthen the straightening of the corresponding cable 41 and prevent it from being deformed.

[0044] Specifically, the clamping unit 6 includes a clamping bracket 61, to which is connected a clamping power unit 62, wherein the clamping power unit 62 is a cylinder or a motor, and its structure is prior art and will not be described in detail here; the movable end of the clamping power unit 62 is connected to a second pressure plate 63, and the clamping bracket 61 is connected to a third guide sleeve 64, and the second pressure plate 63 is connected to a third guide rod 65 which is slidably connected to the third guide sleeve 64, so that the second pressure plate 63 is more stable during movement.

[0045] To summarize, when the laser automatic welding equipment of the present application welds multiple temperature sensors, the pins of each thermistor may be offset or have different height positions, which will cause welding instability and affect the yield rate; through the cooperation of the shaping unit, the clamping unit and the clamping unit, the pins of different products are protected at the same height during welding, ensuring that the energy error of each soldering point is as small as possible, thereby ensuring the yield rate.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0047] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A laser automatic welding device for a temperature sensor, characterized in that: It includes: fixture A transfer unit (1) is used to fix the cable (41) of the temperature sensor (4) and to move the cable along a preset direction; the jig transfer unit (1) comprises a slide table (11), a plurality of cable clamping jigs (12) arranged in sequence are slidably connected to the slide table (11), and the plurality of cable clamping jigs (12) move in sequence on the slide table (11); the cable clamping jig (12) comprises a jig body (121), and a plurality of cable grooves (123) for installing the cable (41) are arranged at intervals on the upper surface of the jig body (121); a plurality of clamping mechanisms (124) are respectively provided on both sides of the jig body (121), and each of the two ends of each cable groove (123) corresponds to a clamping mechanism (124), and the clamping mechanism (124) clamps the cable (41) in the cable groove (123); A shaping unit (2) is used to shape the connection between the connection end of the cable (41) of the temperature sensor (4) on the jig transfer unit (1) and the pin of the thermistor (42); The welding unit (3) welds the connection between the connection end of the wiring (41) of the temperature sensor (4) shaped by the shaping unit (2) and the pin of the thermistor (42).

2. The laser automatic welding equipment for temperature sensors according to claim 1, characterized in that: The device further comprises a clamping unit (5), the clamping unit (5) clamping the wiring (41) of the temperature sensor (4); the clamping unit (5) comprises a first clamping plate (51) and a second clamping plate (52) arranged opposite to each other, the first clamping plate (51) and the second clamping plate (52) being respectively movably connected to a clamping support frame (53); the clamping support frame (53) is provided with a clamping power part (54), the first clamping plate (51) and the second clamping plate (52) being respectively connected to the movable ends of the clamping power part (54); The end surface of the first clamping plate (51) and the end surface of the second clamping plate (52) respectively form a clamping boss (59), and the two clamping bosses (59) move relative to each other to jointly clamp the cable (41).

3. The laser automatic welding equipment for temperature sensors according to claim 2, characterized in that: The device further comprises a pressing unit (6), the pressing unit (6) pressing the cable (41) of the temperature sensor (4) clamped by the clamping unit (5); the pressing unit (6) comprises a pressing bracket (61), the pressing bracket (61) being connected to a pressing power unit (62); the movable end of the pressing power unit (62) being connected to a second pressing plate (63).

4. The laser automatic welding equipment for temperature sensors according to claim 1, characterized in that: The clamping mechanism (124) comprises a clamping connection column (1241) connected to or integrally formed with the fixture body (121), a clamping seat (1242), a clamping claw (1243) and a first elastic member (1247); the clamping seat (1242) is provided with a clamping seat connection through hole (1244); the clamping claw (1243) is provided with a clamping claw connection through hole (1245); the clamping seat (1242) is formed with a clamping claw installation space (1246); the clamping claw (1243) is movably arranged on the clamping seat (1242); In the claw installation space (1246), the first elastic member (1247) is connected between the clamping seat (1242) and the clamping claw (1243), and the clamping claw (1243) is located in the claw installation space (1246); at this time, the center line of the clamping seat connecting through hole (1244) coincides with the center line of the clamping claw connecting through hole (1245), and then, the clamping seat (1242) and the clamping claw (1243) are movably arranged on the clamping connection column (1241); the clamping claw (1243) can rotate relative to the clamping connection column (1241); The clamping claw (1243) is formed with a hook portion (1248) and a handle portion (1249); a preset interval is provided between two adjacent clamping seats (1242), and the preset interval facilitates the operation of the handle portion (1249) of the clamping claw (1243); the clamping hook portion (1248) clamps the cable (41) on the cable slot (123) under the action of the first elastic member (1247); a clamping seat clearance groove (12410) is formed on the side of the clamping seat (1242); when the clamping claw (1243) is arranged in the clamping claw installation space (1246), the handle portion (1249) passes through the clamping seat clearance groove (12410) to facilitate the operation of the handle portion (1249) by external force, so that the clamping hook portion (1248) is detached from the cable (41).

5. The automatic laser welding equipment for temperature sensors according to claim 4, characterized in that: The clamping seat (1242) and the clamping claw (1243) are respectively provided with a first installation groove (12411) that matches the first elastic member (1247).

6. The automatic laser welding equipment for temperature sensors according to claim 4, characterized in that: A holder limiting groove (12412) adapted to the holder (1242) is formed on the fixture body (121), and the holder limiting groove (12412) limits the holder (1242).

7. The automatic laser welding equipment for temperature sensors according to claim 6, characterized in that: The fixture body (121) is provided with a clamping block (12413), and the clamping block (12413) cooperates with the upper surface of the clamping seat (1242); the clamping seat (1242) is provided with a cable clearance groove (12414).

8. The automatic laser welding equipment for temperature sensors according to claim 4, characterized in that: It also includes a discharge mechanism (125), wherein the discharge mechanism (125) overcomes the elastic force of the first elastic member (1247) to lift the handle portion (1249) of the claw (1243), so that the hook portion (1248) is freed from the restriction on the cable arrangement (41); the discharge mechanism (125) cooperates with a corresponding cable clamping fixture (12); The unloading mechanism (125) comprises a top plate (1251), the upper part of which forms a top handle (1252), the top handle (1252) moves up and down within a preset interval between two adjacent clamping seats (1242), and the top handle (1252) is located below the handle portion (1249) of the corresponding clamping claw (1243), when the top handle (1252) moves upward, the top handle (1252) lifts the handle portion (1249) of the clamping claw (1243) upward, the first elastic member (1247) is compressed, and the hook portion (1248) rotates with the clamping connection column (1241) as a fulcrum; the lower part of the top plate (1251) is connected to the movable end of the unloading power unit (1253).

9. The laser automatic welding equipment for temperature sensors according to claim 1, characterized in that: The shaping unit (2) comprises a shaping support frame (21), a first shaping plate (22) and a second shaping plate (23) arranged at intervals being movably connected to the shaping support frame (21), the first shaping plate (22) and the second shaping plate (23) being arranged opposite to each other, and the first shaping plate (22) and the second shaping plate (23) being close to or far away from each other on the shaping support frame (21); The first shaping plate (22) is connected to a movable end of a first power part (24) provided on the shaping support frame (21); The second shaping plate (23) is connected to the movable end of a second power unit (25) provided on the shaping support frame (21); the end surface of the first shaping plate (22) and the end surface of the second shaping plate (23) are respectively formed with shaping bosses (211); The shaping unit (2) further comprises a first clamping mechanism (210), the first clamping mechanism (210) clamping the cable (41) on the cable clamping fixture (12); the first clamping mechanism (210) comprises a first pressing plate (2101), the first pressing plate (2101) being movably connected to the shaping support frame (21); the first pressing plate (2101) is connected to a movable end of a third power unit (2102) provided on the shaping support frame (21).

10. The laser automatic welding equipment for temperature sensors according to claim 1, characterized in that: The welding unit (3) comprises an X-arm module (31), a Y-arm module (32), a Z-arm module (33) and a welder (34); the fixed portion of the Y-arm module (32) is connected to the movable portion of the X-arm module (31); the fixed portion of the Z-arm module (33) is connected to the movable portion of the Y-arm module (32); and the welder (34) is connected to the movable portion of the Z-arm module (33).

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