Thermistor temperature sensor assembly equipment and assembly method

Abstract

The present invention discloses a thermistor temperature sensor assembly device and assembly method. The device includes welding equipment, front-assembly coding equipment, back-assembly testing equipment, and several linear motion modules. The welding equipment includes a multi-segment conveyor belt device, a carrier assembly mounted on the conveyor belt device, and a mobile welding device mounted above the carrier assembly. The front-assembly coding equipment includes an inner sealing ring assembly device, an iron shell glue dispensing device, and an iron shell riveting device for riveting and injection molding the iron shell. The back-assembly testing equipment includes an outer sealing ring assembly device, a pressure test device for testing the insulation strength performance of the temperature sensor, and an airtightness test device for testing the external sealing performance of the temperature sensor. This invention achieves automated and efficient assembly of temperature sensors.

Description

Technical Field

[0001] The invention belongs to the technical field of temperature sensor assembly, and in particular relates to general assembly equipment for a thermistor temperature sensor and an assembly method thereof. Background Art

[0002] The function of an automotive engine temperature sensor is to convert the temperature change of a gas or liquid into an electrical signal and provide it to the ECU. The ECU then receives this temperature signal and performs temperature control operations. Existing temperature sensors are complex in structure and require numerous workstations during assembly, making it impossible to form an automated assembly line, resulting in low assembly efficiency. The following problems are prone to occur: The assembly of the temperature sensor's internal terminals and the thermistor deviates, making it impossible to ensure the thermistor's installation position; the elastic sealing ring can easily pop off during assembly, causing missing components; the iron shell and injection molded parts are typically assembled using threaded connections, which can easily cause the thermistor to deform and lead to short circuits; and after assembly, the temperature sensor requires resistance testing, pressure testing, and airtightness testing of the installed iron shell. The existing assembly process lacks a series of standardized tests, making it impossible to guarantee the quality of the temperature sensor. Summary of the Invention

[0003] The purpose of the present invention is to solve the above technical problems and provide a thermistor temperature sensor assembly device and assembly method thereof, thereby realizing the automated and efficient assembly of the temperature sensor. In order to achieve the above purpose, the technical solution of the present invention is as follows:

[0004] Thermistor temperature sensor assembly equipment includes welding equipment, front-assembly coding equipment, post-assembly testing equipment, and several linear moving modules for transferring parts; the welding equipment includes a multi-section spliced ​​conveyor belt device, a carrier assembly provided on the conveyor belt device for carrying the product to be welded, and a mobile welding device provided above the carrier assembly for welding the thermistor and the injection molded housing terminal; the front-assembly coding equipment includes an inner sealing ring assembly device sequentially provided on the circumference of the front indexing plate for inserting the sealing ring on the injection molded housing, an iron housing dispensing device for dispensing glue in the iron housing, and an iron housing riveting device for riveting the iron housing and injection molding the housing; the post-assembly testing equipment includes an outer sealing ring assembly device sequentially provided on the circumference of the rear indexing plate for inserting the sealing ring on the iron housing, a pressure test device for testing the insulation strength performance of the temperature sensor, and an airtightness test device for testing the external sealing performance of the temperature sensor.

[0005] Specifically, the thermistor temperature sensor assembly equipment also includes a temperature point testing and cleaning device located behind the front assembly coding equipment; the temperature point testing and cleaning equipment includes a resistance testing device for detecting the resistance of the temperature sensor at several segmented temperatures and a cleaning and air blowing device for cleaning and drying the temperature sensor.

[0006] Specifically, the mobile welding device includes a welding head and a CCD camera module arranged on the side of the welding head.

[0007] Specifically, the inner sealing ring assembly device includes a chuck structure for temporarily storing the sealing ring and an anti-slip joint assembly for expanding and transferring the inner sealing ring of the chuck structure.

[0008] Specifically, the iron shell glue dispensing device includes a material storage structure for accommodating the iron shell and a glue dispensing structure that moves up and down to align the iron shell, and the glue in the glue dispensing structure is dispensed into the docking part of the iron shell.

[0009] Specifically, a laser coding device and a product code scanning and unloading device are also provided behind the iron shell riveting device.

[0010] The assembling method of thermistor temperature sensor assembly equipment includes the following steps:

[0011] 1) Position the injection molded housing in the carrier assembly, manually place the thermistor and connect it to the terminals in the injection molded housing, cooperate with the welding mobile device, and weld the thermistor and the terminals in the injection molded housing with the welding head to form a welded semi-finished product;

[0012] 2) The linear moving module places the welded semi-finished product into the front indexing plate for circulation;

[0013] 3) The inner sealing ring assembly device inserts the sealing ring into one end of the exposed terminal on the injection molded housing;

[0014] 4) The iron shell dispensing device performs dispensing on the inside of the docking part of the iron shell;

[0015] 5) The iron shell is plugged into the end of the injection molded shell with a sealing ring, and the iron shell riveting device rivets the iron shell and the welded semi-finished product into place to form a riveted semi-finished product;

[0016] 6) The coding machine in the laser coding device codes the riveted semi-finished products and unloads them;

[0017] 7) Temperature point testing and cleaning equipment performs resistance testing, ultrasonic cleaning, and air drying on riveted semi-finished products;

[0018] 8) The linear moving module places the riveted semi-finished product into the rear indexing plate for circulation;

[0019] 9) The outer sealing ring assembly device puts the sealing ring onto the iron shell;

[0020] 10) The retaining ring assembly device inserts the retaining ring onto the iron housing and positions the sealing ring to complete the assembly of the temperature sensor;

[0021] 11) The pressure test device performs pressure test on the temperature sensor;

[0022] 12) The airtightness detection device detects the external sealing performance of the temperature sensor;

[0023] 13) Finished products are unloaded and packaged.

[0024] Specifically, in step 7), during the resistance test, the iron shell components are immersed in a constant temperature oil tank at different temperatures, and the resistance is detected by connecting the PIN pins to the terminals in the injection molded shell to obtain the resistance data of the temperature sensor under different temperature conditions.

[0025] Specifically, in step 11), during the pressure test, probes are connected to the injection molded housing and the sealing ring located outside the housing, and the pressure tester detects the data.

[0026] Specifically, in step 12), during the air tightness test, the iron shell of the temperature sensor is sealed in the sealed cavity, and the air tightness detector detects data by connecting to the air source of the sealed cavity.

[0027] Compared with the prior art, the beneficial effects of the thermistor temperature sensor assembly equipment and the assembly method of the present invention are mainly reflected in:

[0028] By setting up a special carrier assembly and a mobile welding device, the installation position of the thermistor is guaranteed, thereby avoiding deviations in the assembly of the terminals inside the temperature sensor and the thermistor; an anti-drop joint assembly is used in conjunction with a chuck structure to ensure that the temperature sensor is stably installed when assembling the inner sealing ring or the outer sealing ring to avoid the problem of springing off; the iron shell is glued to avoid the traditional screw connection method, and is assembled through riveting technology to ensure the integrity of the thermistor installed in the iron shell and avoid short circuit problems; temperature point testing and cleaning equipment are used to perform resistance testing, and pressure testing and air tightness testing are performed in the post-assembly testing equipment to form an automated flow process, thereby achieving efficient and accurate detection of the quality of the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the complete structure of the temperature sensor according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the thermistor assembled into an injection molded housing in this embodiment;

[0031] Figure 3 Schematic diagram of the notch structure of the injection-molded housing in this embodiment;

[0032] Figure 4 Schematic diagram of the structure of the iron shell in this embodiment;

[0033] Figure 5 Schematic diagram of the structure of the welding equipment in this embodiment;

[0034] Figure 6 Schematic diagram of the structure of the conveyor belt device in this embodiment;

[0035] Figure 7 Schematic diagram of the structure of the carrier assembly in this embodiment;

[0036] Figure 8 This is a schematic diagram of the structure of the front assembly coding equipment in this embodiment;

[0037] Figure 9 This is a schematic diagram of the front indexing plate loading structure in this embodiment;

[0038] Figure 10 Schematic diagram of the structure of the inner sealing ring assembly device in this embodiment;

[0039] Figure 11 Schematic diagram of the staggered material distribution tooling structure in this embodiment;

[0040] Figure 12 Schematic diagram of the structure of the chuck structure and the anti-slip joint assembly in this embodiment;

[0041] Figure 13 Schematic diagram of the ejection structure of the connecting sleeve in the anti-slip joint assembly in this embodiment;

[0042] Figure 14 This is a structural diagram of the anti-slip joint assembly in this embodiment cooperating with the gripper c to transfer the inner sealing ring;

[0043] Figure 15 Schematic diagram of the structure of the product turning device in this embodiment;

[0044] Figure 16 This is the iron shell dispensing device in this embodiment;

[0045] Figure 17 In this embodiment Figure 16 A partial enlarged schematic diagram;

[0046] Figure 18 This is a schematic structural diagram of the iron shell riveting device in this embodiment;

[0047] Figure 19 Schematic diagram of the structure of the first pressing assembly and the second pressing assembly in this embodiment;

[0048] Figure 20 This is a partially enlarged structural diagram of the second pressing assembly in this embodiment;

[0049] Figure 21 This is a schematic structural diagram of a semi-finished spinning assembly in this embodiment;

[0050] Figure 22Schematic diagram of the structure of the temperature point testing and cleaning equipment in this embodiment;

[0051] Figure 23 Schematic diagram of the structure of the batch transfer device in this embodiment;

[0052] Figure 24 Schematic diagram of the resistance testing device in this embodiment;

[0053] Figure 25 Schematic diagram of the structure of the cleaning and air blowing device in this embodiment;

[0054] Figure 26 This is a schematic structural diagram of the post-assembly detection equipment in this embodiment;

[0055] Figure 27 This is a structural diagram of the loading and unloading device in this embodiment;

[0056] Figure 28 This is a schematic structural diagram of the outer sealing ring assembly device in this embodiment;

[0057] Figure 29 Schematic diagram of the structure of the retaining ring assembly device in this embodiment;

[0058] Figure 30 Schematic diagram of the structure of the withstand voltage test device in this embodiment;

[0059] Figure 31 Schematic diagram of the structure of the airtightness detection device in this embodiment;

[0060] Figure 32 This is a partially enlarged structural diagram of the airtightness detection device in this embodiment;

[0061] The numbers in the figure represent:

[0062] 1 temperature sensor, 11 injection molded housing, 12 terminal, 121 notch, 122 flange, 13 thermistor, 14 iron housing, 141 bottom column, 142 docking portion, 15 outer sealing ring, 16 retaining ring, 17 inner sealing ring, 18 extended housing, 181 positioning hole;

[0063] 2 welding equipment, 21 conveyor belt, 211 lateral slide rail, 212 lateral moving plate, 213 cylinder a, 214 top plate, 215 cylinder b, 216 pressure plate, 22 linear moving module a, 221 welding head, 222 CCD camera module a, 23 support plate, 231 strip groove, 232 carrier groove, 233 welding groove, 234 accommodating groove, 235 positioning column a, 24 cover plate, 241 hole position, 242 first through hole, 243 second through hole;

[0064] 3 front assembly coding equipment, 31 front indexing plate, 311 linear motion module b, 312 gripper b, 313 gripper c, 314 CCD camera module b, 315 coding machine, 316 vacuum cleaner, 317 barcode scanner, 32 sliding plate, 321 gripper a, 322 cylinder c, 323 gripper d, 324 cylinder e, 325 servo motor a, 33 base, 331 positioning groove, 332 positioning column b, 34 vibration plate a, 341 offset material distribution tooling a, 342 chuck structure a, 343 linear motion module c, 35 distribution block, 351 distribution trough, 352 offset groove, 353 offset block, 354 cylinder d, 36 anti-slip joint assembly a, 361 mounting block, 362 joint, 363 socket, 36 4 Avoid cavity, 365 multi-jaw chuck, 366 guide plate, 367 protrusion, 368 circular hole, 369 guide groove, 37 vibration plate b, 371 staggered material dividing tooling b, 372 linear motion module d, 373 gripper e, 374 material storage table, 375 material storage trough, 376 vertical plate, 377 dispensing plate, 378 cylinder f, 379 linear motion module e, 38 top pressure plate, 381 moving block, 382 gripper, 383 cylinder g, 384 cylinder h, 385 top pressure table, 386 connecting plate, 387 oblique slide, 388 connecting rod, 39 fixed rod, 391 cylinder j, 392 base, 393 L plate, 394 gripper f, 395 rotating axis, 396 clamping plate, 397 servo motor b, 398 cylinder k;

[0065] 4 Temperature point testing and cleaning equipment, 41 linear motion module f, 411 linear motion module g, 412 gripper g, 413 gripper h, 42 constant temperature oil tank, 421 electrical measuring board, 422 PIN needle, 423 heat insulation board, 424 exhaust hood, 425 cylinder l, 43 moving table, 431 linear motion module h, 432 hook plate, 433 frame, 434 gripper i, 435 preset rack, 44 cleaning tank, 441 air blow pipe, 442 connecting pipe;

[0066] 5. Post-assembly inspection equipment, 51. Post-indexing plate, 511. Card holder, 512. Card holder, 513. Linear motion module i, 514. Defective product box, 515. Clamp j, 52. Vibrating plate c, 521. Offset material separation tool c, 522. Card holder structure b, 523. Linear motion module j, 524. Anti-slip joint assembly b, 525. Cylinder m, 526. Block assembly a, 527. Block, 528. Cylinder n, 53. Vibrating plate d, 531. Offset material separation tool d, 532. Moving frame, 533 cylinder o, 534 cylinder p, 535 cylinder q, 536 block assembly b, 54 first fixed plate, 541 first probe, 542 second fixed plate, 543 second probe, 544 first straight plate, 545 cylinder r, 546 second straight plate, 55 positioning seat, 551 positioning plate, 552 sealing chamber, 553 air inlet, 554 strip rod, 555 cylinder t, 556 cylinder u, 56 linear motion module k, 561 gripper k. DETAILED DESCRIPTION

[0067] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0068] Example 1:

[0069] Reference Figure 1-4 As shown, the specific structure of the temperature sensor 1 to be assembled includes an injection-molded shell 11, a terminal 12 located at the end of the injection-molded shell 11 and integrally injection-molded therewith, a thermistor 13 welded and fixed to the terminal 12, and an iron shell 14 sealed and sleeved with the end of the injection-molded shell 11 and covering the thermistor 13 and the terminal 12.

[0070] The iron shell 14 includes a hollow bottom column 141 and an annular docking portion 142 disposed on the top of the bottom column 141 .

[0071] The outer sleeve of the bottom column 141 is provided with an outer sealing ring 15 and a retaining ring 16 for blocking the outer sealing ring 15 at the side of the docking portion 142. The retaining ring 16 is made of plastic material.

[0072] An inner sealing ring 17 is sleeved on one end of the injection-molded housing 11 where the terminal 12 is exposed. The port of the docking portion 142 is filled with glue and aligned with the inner sealing ring 17 . The injection-molded housing 11 is riveted and inserted into the docking portion 142 .

[0073] The end of the injection molded housing 11 facing away from the iron housing 14 is provided with a notch 121 for exposing the terminal 12. Both sides of the notch 121 are provided with flanges 122 for installation and positioning. The side of the injection molded housing 11 is provided with an extension housing 18 with a positioning hole 181.

[0074] Thermistor temperature sensor general assembly equipment includes welding equipment 2, front assembly coding equipment 3, temperature point testing and cleaning equipment 4 and post-assembly testing equipment 5.

[0075] Reference Figure 5-7 As shown, the welding device 2 includes a conveyor belt device with multiple sections, a carrier assembly arranged on the conveyor belt device for carrying the products to be welded, and a mobile welding device arranged on the side of the conveyor belt device and located above the carrier assembly.

[0076] The conveyor belt device includes relatively parallel conveyor belts 21, a plurality of lifting assemblies arranged between the two conveyor belts 21 for lifting the carrier assembly, and a lateral sliding assembly arranged at the bottom of a section of the conveyor belt 21 for moving out of the guide transmission position.

[0077] The lateral sliding assembly includes a lateral rail 211 arranged perpendicular to the direction of travel of the conveyor belt 21, and a lateral movable plate 212 that slides along the lateral rail 211. A set of conveyor belts 21 are supported on top of the lateral movable plate 212. The lateral movable plate 212 is connected to a cylinder a213 that drives it along the lateral rail 211.

[0078] The lifting assembly includes a top plate 214, which lifts the carrier assembly in correspondence with the top plate, and a cylinder b215, which drives the top plate 214 upward and downward. Cylinder b215 is mounted on the lateral movable plate 212 or the welding table. The lifting assembly also includes pressure plates 216, symmetrically located on either side of the conveyor belt 21. When the top plate 214 pushes the carrier assembly into position, the pressure plates 216 block the carrier assembly.

[0079] The mobile welding device includes a linear moving module a22, a welding head 221 mounted on the linear moving module a22 and moving in the vertical or horizontal direction, and a CCD camera module a222 provided on the side of the welding head 221. The CCD camera module a222 takes pictures to detect the welding position.

[0080] The carrier assembly includes a support plate 23, several strip-shaped grooves 231 within the support plate 23, several equally spaced carrier grooves 232 recessed within the support plate 23 for accommodating the injection-molded housing 11, welding grooves 233 within the strip-shaped grooves 231 corresponding to the side openings of the carrier grooves 232, and a accommodating groove 234 outside the welding grooves 233 for accommodating the thermistor 13. The ends of the injection-molded housing 11 open toward the side of the carrier grooves 232, with the terminals 12 exposed within the welding grooves 233. The thermistor 13 extends and overlaps the terminals 12.

[0081] The carrier assembly also includes a cover plate 24 for covering the carrier slot 232 and compressing the injection-molded housing 11. Both sides of the cover plate 24 are provided with holes 241 that align with the positioning posts a235 on the support plate 23. The cover plate 24 also includes several first through-holes 242 that allow for clearance of the extension housing 18, and several second through-holes 243 that allow for clearance of the welding slots 233. The welding head 221 aligns with the second through-holes 243, ensuring accurate welding of the thermistor 13 to the terminals 12.

[0082] The lateral movement component is arranged at the bottom of a section of the conveyor belt device to realize the lateral movement of the carrier component, which is suitable for the effective docking welding head 221 of multiple products in the carrier component; the position setting of the welding groove 233 and the accommodating groove 234 on the support plate 23 effectively ensures that the terminal positions of the thermistor 13 and the injection molded shell 11 are accurately overlapped, and the cover plate 24 is closed to ensure the accuracy of welding.

[0083] Reference Figure 8-21As shown, the front assembly coding equipment 3 includes a linear moving module b311 for transferring the welded injection-molded shell 11 on the conveyor belt 21 to the front indexing plate 31 for loading, an inner sealing ring assembly device, a product turning device, an iron shell dispensing device, an iron shell riveting device, a laser coding device, and a product scanning and unloading device, which are sequentially arranged on the circumference of the front indexing plate 31.

[0084] A sliding plate 32 is mounted at the end of the conveyor belt 21 , and a gripper a321 is provided at the bottom of the sliding plate 32 . The gripper a321 is connected to a cylinder c322 that drives it to rise and fall and grip and remove the cover plate 24 .

[0085] The linear motion module b311 is equipped with a gripper b312 that transfers the injection molded housing 11 from the support plate 23 to the base. The gripper b312 grips and flips the injection molded housing 11.

[0086] The front indexing plate 31 is provided with a plurality of bases 33 evenly distributed in the circumference, and two positioning grooves 331 are provided side by side on the base 33. One end of the exposed terminal 12 of the injection-molded shell 11 is placed in the positioning groove 331. The extended shell 18 is placed on the surface of the base 33. The surface of the base 33 is provided with a positioning column b332. The positioning hole 181 in the extended shell 18 corresponds to and connects with the positioning column b332.

[0087] The inner sealing ring assembly device includes a vibration plate a34, a staggered material distribution tool a341 connected to the vibration plate a34 for distributing the inner sealing ring of the vibration plate a34, and a linear moving module c343 that transfers the sealing ring on the staggered material distribution tool a341 to the chuck structure a342.

[0088] The offset material distribution tooling includes a distribution block 35 that docks with the vibrating plate, a distribution trough 351 on distribution block 35 for transferring materials, and an offset trough 352 on the side of distribution block 35 that allows it to move and dock with distribution trough 351. Trough 352 is located on top of a distribution block 353, which is connected to a cylinder d354. The sealing ring inside the vibrating plate vibrates through distribution trough 351 into offset trough 352, causing distribution block 353 to shift and separate from distribution trough 351.

[0089] The linear motion module C343 is mounted with an anti-slip joint assembly A36. This assembly comprises a mounting block 361, a joint 362 extending through the mounting block 361, and a retractable sleeve 363 that fits over the joint 362. Joint 362 defines a cavity 364. Joint 362 inserts into and expands the sealing ring within the offset groove 352. The outer periphery of joint 362 abuts the inner periphery of the sealing ring, which securely fits over joint 362 for transfer.

[0090] The chuck structure includes a multi-jaw chuck 365 and a guide plate 366 provided on each jaw of the multi-jaw chuck 365; a protrusion 367 is provided on the top of each jaw, a circular hole 368 is provided in the center of the guide plate 366, and guide grooves 369 for guiding each protrusion 367 are respectively provided at circumferentially equal positions of the circular hole 368. Each jaw gathers together to grasp the sealing ring on the joint 362 for temporarily storing the sealing ring.

[0091] A clamp c313 is also provided on the front dividing plate. The clamp c313 opens and closes to clamp the injection molded shell 11 located in the base 33. The mounting block 361 moves to the top of the injection molded shell 11, and the connector 362 connects to the injection molded shell 11, avoiding the exposed terminals 12 on the injection molded shell 11 in the cavity 364. The socket 363 extends out of the end of the connector 362, and the sealing ring on the connector 362 is pushed onto the injection molded shell 11.

[0092] The product flipping device includes a gripper d323, a rotating cylinder e324 connected to gripper d323, and a CCD camera module b314 mounted on the front indexing plate 31. Cylinder e324 is connected to a servo motor a325. Gripper d323 grasps the molded housing 11 within the base 33 and flips it 180°, positioning the housing with the notch 121 facing upward. While gripper d323 grasps the housing 11, the CCD camera module b314 takes a photo to check the installation position of the inner sealing ring 17.

[0093] The iron shell dispensing device includes a vibration plate b37, a staggered material distribution tooling b371 that is connected to the vibration plate b37 and is used to distribute the iron shell 14 inside the vibration plate b37, a linear moving module d372 that transfers the iron shell 14 on the staggered material distribution tooling b371 to several storage structures, and a dispensing structure arranged on the side of a storage structure.

[0094] The gripper e373 is installed on the linear motion module d372.

[0095] The material storage structure includes a material storage platform 374 provided on the side of the front dividing plate 31 , and a material storage trough 375 provided on the top of the material storage platform 374 for accommodating the bottom column 141 of the iron shell 14 ; the docking portion 142 of the iron shell 14 is mounted on the surface of the material storage platform 374 .

[0096] The glue dispensing structure includes a vertically arranged upright plate 376, a cylinder f378 mounted on the upright plate 376 to drive a glue dispensing plate 377 to move up and down along the upright plate 376, and a glue dispensing machine (not shown in the figure) mounted on the glue dispensing plate 377. The glue dispensing machine dispenses glue into the docking portion 141 of the iron shell 14 through a glue tube.

[0097] The iron shell riveting device includes a first pressing component for positioning the left and right positions of the injection-molded shell 11, a second pressing component for positioning the front and rear positions of the iron shell 14, a linear moving module e379, and a semi-finished spinning component for riveting the injection-molded shell 11 in the iron shell 14 installed on the linear moving module e379.

[0098] The first pressing assembly includes two movable blocks 381 that slide relative to each other along the pressing plate 38, and latches 382 positioned opposite each other on the movable blocks 381. The latches 382 are positioned symmetrically on either side of the injection molding housing 11. The pressing plate 38 is connected to a cylinder g 383 for lateral movement and a cylinder h 384 for longitudinal movement. The two movable blocks 381 are connected to a cylinder i (not shown) for horizontal movement along the pressing plate 38.

[0099] The second pressing assembly includes a pressing platform 385, a horizontally movable connecting plate 386 disposed within the upper groove of the pressing platform 385, an oblique slot 387 disposed within the connecting plate 386, a connecting rod 388 axially coupled to the oblique slot 387, and a fixed rod 39 for clamping the outer end of the connecting rod 388. The connecting plate 386 is connected to a cylinder j391.

[0100] The connecting rod 388 and the fixing rod 39 clamp the docking position of the iron shell 14. When the connecting plate 386 moves, the shaft head at the bottom of the connecting rod 388 moves along the oblique sliding groove 387, so that the connecting rod 388 advances to cooperate with the fixing rod 39 to achieve clamping and opening. The connecting rod 388 and the clamping hand 382 are arranged in a relatively vertical position.

[0101] The bottom of the pressing platform 385 is set on the base 392, and a bottom hole (not shown in the figure) is opened on the base 392 to avoid the iron shell 14. The clamping hand e373 in the linear moving module d372 moves the iron shell 14 after dispensing from the storage platform 374 to the position between the fixed rod 39 and the connecting rod 388. The bottom end of the iron shell 14 is placed in the bottom hole, and the docking part 142 is set upward.

[0102] The semi-finished spinning assembly includes an L-plate 393, a gripper f394 passing through the L-plate 393, a rotating shaft 395 connected to the top of the gripper f394, and a clamping plate 396 provided on the side of the rotating shaft 395 to hold it up and down. The top of the rotating shaft 395 is connected to a servo motor b397. The side of the clamping plate 396 is connected to a cylinder k398. The gripper f394 on the linear motion module e379 moves the injection molded housing 11 equipped with an inner sealing ring on the front indexing plate 31 to the position of the iron housing 14 on the base 392. The gripper f394 presses the end of the exposed terminal 12 of the injection molded housing 11 into the bottom column 141 of the iron housing 14. The grippers of the two moving blocks 381 fix the injection molded housing 11, the gripper f394 is released, and the top pressure plate 38 descends to rivet the injection molded housing 11 and the iron housing 14 into place. The L-plate 393 is installed on the linear moving module e379, and the clamp f394 of the linear moving module e379 transfers the riveted product back to the front indexing plate 31.

[0103] The laser marking device includes a marking machine 315 provided on the front indexing plate 31 for marking the injection molded housing 11 , and a dust collector 316 provided on the outside of the front indexing plate 31 for absorbing dust from the marking machine 315 .

[0104] The product scanning and unloading device includes a scanning gun 317 arranged on the outside of the front indexing plate 31. The gripper b312 in the linear moving module b311 returns the assembled temperature sensor in the front indexing plate 31 to unload the product.

[0105] Reference Figure 22-25 As shown, the temperature point testing and cleaning equipment 4 includes a linear moving module f41 for loading temperature sensors on the conveyor belt after transfer and assembly, several resistance testing devices for segmented temperature detection, a cleaning and air blowing device, a batch transferring device for transporting several groups of temperature sensors in the resistance testing device to the cleaning and air blowing device, and a linear moving module g411 for unloading temperature sensors on the cleaning and air blowing device.

[0106] The linear motion module f41 is equipped with a gripper g412, and the linear motion module g411 is equipped with a gripper h413.

[0107] The resistance testing device includes several constant temperature control devices with different temperature controls and a resistance detector connected to the terminals of the temperature sensor; the constant temperature control device is connected to the temperature sensor, and the clamp i moves the temperature sensor to the constant temperature control device at different temperature stages for testing.

[0108] The constant temperature control device includes a constant temperature oil tank 42, an electric measuring board 421 that is movable and can be raised and lowered on the side of the constant temperature oil tank 42, and a plurality of PIN needles 422 that are arranged at intervals and penetrate the electric measuring board 421; the tail end of the PIN needle 422 is connected to a resistance detector (not shown in the figure).

[0109] One constant temperature oil tank is filled with constant temperature oil at 25°C, and the other constant temperature oil tank is filled with 90°C oil. Insulation plates 423 are provided on both sides of the constant temperature oil tank containing 90°C oil, and a fume hood 424 is provided above the constant temperature oil tank.

[0110] The batch transfer device includes a movable platform 43 mounted on the open top of the constant temperature oil tank 42, and a linear movable module h431 arranged corresponding to the movable platform 43; hook plates 432 with notches are provided on both sides of the movable platform 43, and a frame 433 is installed on the linear movable module h431. Clamps i434 for grabbing the movable platform 43 are provided on both sides of the frame 433, and the clamps i434 are arranged corresponding to the notches in the hook plate 432.

[0111] Several temperature sensors 1 are placed on the movable platform 43 at equal intervals. The iron housing 14 of the temperature sensor 1 extends through the movable platform 43 and downwardly into the oil in the constant temperature oil tank 42 . The extension housing 18 is hung on the surface of the movable platform 43 .

[0112] The electric measuring board 421 is connected to a cylinder 1 425 that drives it to move up and down. The PIN needle 422 is connected to the terminal 12 in the notch 121 of the temperature sensor 1. The resistance detector detects the resistance data of the temperature sensor 1 when it is in different stages of temperature sensing.

[0113] The temperature point testing and cleaning equipment 4 also includes several pre-set racks 435 located on the sides and rear of the constant temperature oil tank 42. A mobile platform 43 is placed on top of the pre-set racks 435. Gripper g412 transfers the assembled temperature sensor 1 to the mobile platform 43 on the pre-set racks 435 for arrangement. Gripper i434 transfers the mobile platform 43 on the pre-set racks 44 to the top of the constant temperature oil tank 42.

[0114] The cleaning and air blowing device includes a cleaning tank 44, an ultrasonic cleaner (not shown) corresponding to the cleaning tank 44, and a plurality of air blowing pipes 441 located at the rear of the cleaning tank 44. The plurality of air blowing pipes 441 are equidistantly spaced on the connecting pipe 442.

[0115] The movable platform 43 on the preset rack 435 located behind the constant temperature oil tank 42 is moved to the top of the cleaning tank 44 by the clamp i434. The ultrasonic cleaner cleans the temperature sensor 1 on the movable platform 43, and the oil stains fall into the cleaning tank 44.

[0116] The gripper i434 moves the movable platform 43 on the top of the cleaning tank 44 to the preset rack 435 on the side of the blowing pipe 441. Several blowing pipes 441 are connected in series to a blowing machine (not shown in the figure). The blowing pipe 441 blows and dries the position of the temperature sensor 1.

[0117] The gripper h413 transfers and unloads the temperature sensor 1 in the movable platform 43 on the side of the blowing pipe 441.

[0118] Reference Figure 26-32 As shown, the post-assembly inspection device 5 includes an outer sealing ring assembly device, a retaining ring assembly device, a pressure test device, an airtightness inspection device, and a loading and unloading device, which are sequentially arranged on the circumference of the rear indexing plate 51 .

[0119] A plurality of evenly distributed clamping seats 511 are provided around the rear indexing plate 51. The outer sides of the clamping seats 511 are provided with clamping holes 512 for clamping the temperature sensor 1. The iron housing 14 of the temperature sensor 1 passes through the clamping holes 512 and is placed downward.

[0120] The loading and unloading device includes a linear moving module i513 arranged on the side of the rear indexing plate 51, a defective product box 514 arranged below the linear moving module i513, and a conveyor belt for unloading located behind the defective product box 514.

[0121] The linear moving module i513 is equipped with a gripper j515, which transfers the temperature sensor 1 after air drying to the holder 511 on the rear indexing plate 51 for loading.

[0122] The outer sealing ring assembly device includes a vibration plate c52, a staggered material dividing tool c521 that is connected to the vibration plate c52 and is used to divide the sealing ring of the vibration plate c52, and a linear moving module j523 that transfers the sealing ring on the staggered material dividing tool c521 to the chuck structure b522.

[0123] An anti-detachment joint assembly b524 is installed on the linear motion module j523. The joint inside the anti-detachment joint assembly is inserted into and stretches the sealing ring in the dislocation groove. The outer periphery of the joint docks with the inner periphery of the sealing ring, and the sealing ring is tightly fitted on the joint for transfer.

[0124] The side of the chuck structure b522 is provided with a cylinder m525 that drives it to rise and fall. The circular hole inside the chuck structure b522 docks with the iron shell 14 position of the temperature sensor 1. The chuck structure b522 rises to the corresponding chuck seat 511 position and transfers its internal sealing ring to the bottom column 141 of the iron shell 14.

[0125] The rear dividing plate 51 is provided with a block assembly a526 that cooperates with the chuck structure b522. The block assembly includes a block 527 and a cylinder n528 connected to the block 527 for driving it to rise and fall. The bottom of the block 527 corresponds to the surface of the crimping seat 511, and the block 527 fits and presses the extended shell 18 to prevent the chuck structure b522 from rising excessively and ejecting the temperature sensor 1.

[0126] The retaining ring assembly device includes a vibration disk d53, a staggered material dividing tool d531 for the retaining ring of the vibration disk d53 that is docked with the vibration disk d53 and used to divide the material of the vibration disk d53, and a multi-directional moving component docked with the staggered material dividing tool d531. The multi-directional moving component includes a movable frame 532 for fixing the staggered block 353, a cylinder o533 for driving the movable frame 532 to move along the X-axis direction, a cylinder p534 for driving the movable frame 532 to move along the Y-axis direction, and a cylinder q535 for driving the movable frame 532 to move along the Z-axis direction.

[0127] The retaining ring 16 in the dislocation groove 352 moves to below the temperature sensor 1 in the holder 511 , and the moving frame 532 rises to transfer the retaining ring 16 to be sleeved on the bottom column 141 of the iron shell 14 .

[0128] A clamping block assembly b536 that cooperates with the retaining ring assembly device is provided on the rear indexing plate 51. The clamping block 527 presses the extension housing 18 to prevent the misalignment block 353 from rising too much and ejecting the temperature sensor 1.

[0129] The withstand voltage test device includes a first, elevating, movable fixed plate 54 located inside the base 511; a first probe 541 located on the first fixed plate 54 and aligned with the injection-molded housing 11; a second, horizontally movable fixed plate 542 located outside the base 511; and a second probe 543 located on the second fixed plate 542 and aligned with the outer sealing ring 15. The first and second probes 541 and 543 are each connected to a withstand voltage tester (not shown). The withstand voltage tester transmits the test results to an industrial computer, effectively testing the insulation strength performance of the temperature sensor.

[0130] The first fixed plate 54 is connected to a cylinder r545 that drives it to move up and down along the first straight plate 544; the second fixed plate 542 is connected to a cylinder s (not shown in the figure) that drives it to move horizontally along the second straight plate 546 to the side of the card seat 511.

[0131] The airtightness testing device includes a positioning seat 55 disposed on the exterior of the rear indexing plate 51, a positioning plate 551 disposed on the side of the positioning seat 55 and extending to press against the temperature sensor 1 so that it is sealed and embedded within the positioning seat 55, an air inlet 553 disposed on the positioning seat 55 and connected to the sealed cavity 552 in which the temperature sensor 1 is embedded, and an air source (not shown) connected to the air inlet 553. The air source is connected to the airtightness tester.

[0132] The airtightness detection device further comprises a linear moving module k56 for transferring the temperature sensor 1 on the rear indexing plate 51 to the positioning seat 55. A gripper k561 is mounted on the linear moving module k56.

[0133] A strip rod 554 is provided on the side of the positioning plate 551, and the strip rod 554 is connected to a cylinder t555 that drives it to move horizontally; the positioning plate 551 is connected to a cylinder u556 that drives it to move up and down.

[0134] Positioning base 55 defines a sealed cavity 552. Temperature sensor 1's iron housing 14 is positioned within this sealed cavity 552. An outer sealing ring engages the top opening of sealed cavity 552, and extended housing 18 rests on the surface of positioning base 55. An airtightness tester inspects the external sealing performance of temperature sensor 1 and transmits the results to an industrial computer.

[0135] The gripper j515 on the linear motion module i513 moves the temperature sensor 1 in the holder 511 to the unloading conveyor belt for unloading.

[0136] Example 2:

[0137] The assembling method of thermistor temperature sensor assembly equipment includes the following steps:

[0138] 1) Positioning the injection molded housing 11 within the carrier assembly, manually placing the thermistor 13 so as to connect it to the terminal 12 within the injection molded housing 11, cooperating with the welding moving device, and welding the thermistor 13 to the terminal within the injection molded housing 11 with the welding head to form a welded semi-finished product;

[0139] 2) The linear moving module places the welded semi-finished product into the front indexing plate 31 for circulation;

[0140] 3) The inner sealing ring assembly device inserts the sealing ring into one end of the exposed terminal on the injection molded housing 11;

[0141] 4) The iron shell glue dispensing device performs glue dispensing on the inside of the docking portion 142 of the iron shell 14;

[0142] 5) The iron shell 14 is plugged into the end of the injection molded shell 11 with the sealing ring, and the iron shell riveting device rivets the iron shell 14 and the welded semi-finished product into place to form a riveted semi-finished product;

[0143] 6) The coding machine 315 in the laser coding device codes the riveted semi-finished product and unloads it;

[0144] 7) Temperature point testing and cleaning equipment performs resistance testing, ultrasonic cleaning, and air drying on riveted semi-finished products;

[0145] 8) The linear moving module places the riveted semi-finished product into the rear indexing plate 51 for circulation;

[0146] 9) The outer sealing ring assembly device inserts the sealing ring onto the iron housing 14;

[0147] 10) The retaining ring assembly device inserts the retaining ring 16 onto the iron housing 14 and positions the outer sealing ring 15 to complete the assembly of the temperature sensor;

[0148] 11) The pressure test device performs a pressure test on the temperature sensor 1;

[0149] 12) The airtightness detection device detects the external sealing performance of the temperature sensor 1;

[0150] 13) Finished products are unloaded and packaged.

[0151] In step 3), the exposed ends of the terminals 12 on the injection molded housing 11 are positioned upward in the base 33 on the front indexing plate 31. After the inner sealing ring is assembled, the product turning device repositions the exposed ends of the terminals 12 on the injection molded housing 11 downward.

[0152] In step 7), during the resistance test, the components of the iron shell 14 are immersed in a constant temperature oil tank 42 at different temperatures, and the PIN needle 422 is connected to the terminal 12 in the injection molded shell 11 for resistance detection to obtain the resistance data of the temperature sensor under different temperature conditions.

[0153] In step 7), the oily temperature sensor 1 is cleaned by ultrasonic wave, and the temperature sensor is dried by air blowing.

[0154] In step 11), during the pressure test, probes are connected to the injection molded housing 11 and the sealing ring located outside the housing, and the pressure tester detects the data.

[0155] In step 12), during the air tightness test, the iron shell 14 of the temperature sensor 1 is sealed in the sealed cavity 552, and the air tightness detector detects the data by connecting the air source of the sealed cavity 552.

[0156] When applying the above embodiment, a special carrier assembly and a mobile welding device are provided to ensure the installation position of the thermistor, thereby avoiding deviation in the assembly of the terminal 12 inside the temperature sensor 1 and the thermistor 13; an anti-detachment joint assembly is used in conjunction with a chuck structure to ensure that the temperature sensor is stably installed when assembling the inner sealing ring or the outer sealing ring to avoid the problem of springing off; the iron shell 14 is subjected to a glue spot treatment to avoid the traditional screw connection method, and is assembled through riveting technology to ensure the integrity of the thermistor 13 installed in the iron shell 14 to avoid short circuit problems; the temperature point test and cleaning equipment perform resistance testing, and the post-assembly detection equipment performs pressure testing and air tightness testing to form an automated flow process, thereby achieving efficient and accurate detection of the quality of the temperature sensor.

[0157] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. Thermistor temperature sensor assembly equipment, characterized by: It includes welding equipment, front-assembly coding equipment, post-assembly testing equipment, and several linear moving modules for transferring parts; the welding equipment includes a multi-section spliced ​​conveyor belt device, a carrier assembly provided on the conveyor belt device for carrying the product to be welded, and a mobile welding device provided above the carrier assembly for welding thermistors and injection-molded housing terminals. The front-assembly coding equipment includes an inner sealing ring assembly device sequentially provided on the circumference of the front indexing plate for inserting the sealing ring on the injection-molded housing, an iron housing dispensing device for dispensing glue in the iron housing, and an iron housing riveting device for riveting the iron housing and injection-molded housing molding. The post-assembly testing equipment includes an outer sealing ring assembly device sequentially provided on the circumference of the rear indexing plate for inserting the sealing ring on the iron housing, a pressure test device for testing the insulation strength performance of the temperature sensor, and an airtightness test device for testing the external sealing performance of the temperature sensor. The inner sealing ring assembly device includes a chuck structure for temporarily storing the sealing ring and an anti-slip joint assembly for opening and transferring the inner sealing ring of the chuck structure; The carrier assembly includes a support plate, a plurality of strip-shaped grooves provided in the support plate, a plurality of carrier grooves recessed in the support plate and arranged at equal intervals for accommodating the injection-molded housing, a welding groove provided in the strip-shaped groove and corresponding to the side opening of the carrier groove, and a receiving groove provided outside the welding groove for accommodating the thermistor; the end of the injection-molded housing is open toward the side of the carrier groove, the terminal is exposed and located in the welding groove, and the thermistor extends and overlaps the terminal position; The carrier assembly also includes a cover plate for covering the carrier slot and pressing the injection molded housing. Both sides of the cover plate are provided with holes for positioning to the positioning posts on the support plate. The cover plate is provided with a plurality of first through holes for avoiding the extension housing, and a plurality of second through holes for avoiding the welding slot. The welding head corresponds to the position of the second through holes, so as to accurately weld the position of the thermistor lap terminal. The anti-detachment joint assembly includes a mounting block, a joint passing through the mounting block, and a sleeve that is telescopically mounted on the outside of the joint; an air-avoiding cavity is provided inside the joint; the joint is inserted into and expands the sealing ring in the dislocation groove, the outer periphery of the joint docks with the inner periphery of the sealing ring, and the sealing ring is tightly mounted on the joint for transfer.

2. The thermistor temperature sensor assembly equipment according to claim 1, characterized in that: The thermistor temperature sensor assembly equipment also includes a temperature point testing and cleaning device located behind the front assembly coding device; the temperature point testing and cleaning device includes a resistance testing device for detecting the resistance of the temperature sensor at several segmented temperatures and a cleaning and air blowing device for cleaning and drying the temperature sensor.

3. The thermistor temperature sensor assembly equipment according to claim 1, characterized in that: The mobile welding device includes a welding head and a CCD camera module arranged on the side of the welding head.

4. The thermistor temperature sensor assembly equipment according to claim 1, characterized in that: The iron shell glue dispensing device includes a material storage structure for accommodating the iron shell and a glue dispensing structure for lifting and moving the iron shell. The glue in the glue dispensing structure is dispensed into the docking part of the iron shell.

5. The thermistor temperature sensor assembly equipment according to claim 2, characterized in that: A laser coding device and a product code scanning and unloading device are also provided behind the iron shell riveting device.

6. The method for assembling thermistor temperature sensor assembly equipment according to claim 5, wherein: The following steps are involved: 1) Position the injection molded housing in the carrier assembly, manually place the thermistor and connect it to the terminals in the injection molded housing, cooperate with the welding mobile device, and weld the thermistor and the terminals in the injection molded housing with the welding head to form a welded semi-finished product; 2) The linear moving module places the semi-finished product into the front indexing plate for circulation; 3) The inner sealing ring assembly device inserts the sealing ring into one end of the exposed terminal on the injection molded housing; 4) The iron shell dispensing device performs dispensing on the inside of the docking part of the iron shell; 5) The iron shell is plugged into the end of the injection molded shell with a sealing ring, and the iron shell riveting device rivets the iron shell and the welded semi-finished product into place to form a riveted semi-finished product; 6) The coding machine in the laser coding device codes the riveted semi-finished products and unloads them; 7) Temperature point testing and cleaning equipment performs resistance testing, ultrasonic cleaning, and air drying on riveted semi-finished products; 8) The linear moving module places the riveted semi-finished product into the rear indexing plate for circulation; 9) The outer sealing ring assembly device puts the sealing ring onto the iron shell; 10) The retaining ring assembly device puts the retaining ring onto the iron housing and positions the sealing ring to complete the assembly of the temperature sensor; 11) The pressure test device performs pressure test on the temperature sensor; 12) The airtightness detection device detects the external sealing performance of the temperature sensor; 13) Finished products are unloaded and packaged.

7. The method for assembling thermistor temperature sensor assembly equipment according to claim 6, wherein: In step 7), during the resistance test, the iron shell components are immersed in a constant temperature oil tank at different temperatures, and the resistance is detected by connecting the PIN pins to the terminals in the injection molded shell to obtain the resistance data of the temperature sensor under different temperature conditions.

8. The method for assembling thermistor temperature sensor assembly equipment according to claim 6, wherein: In step 11), during the pressure test, probes are connected to the injection molded housing and the sealing ring located outside the housing, and the pressure tester detects the data.

9. The method for assembling thermistor temperature sensor assembly equipment according to claim 6, wherein: In step 12), during the air tightness test, the iron housing of the temperature sensor is sealed in the sealed cavity, and the air tightness tester detects the data by connecting the air source of the sealed cavity.

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