NTC resistance test sorting device

Abstract

The invention provides an NTC (Negative Temperature Coefficient) resistance test sorting device, which solves the problems that the same group of data is easy to interfere, the test efficiency is low and the like in the traditional resistance test, and adopts the main scheme that the NTC resistance test sorting device comprises a first base, an oil groove and a tester are fixed at the top of the first base, and one end of the oil groove is a tooling position to tooling a plurality of thermistor branching wires into wire groups; one end of the tester is used for testing the wire group, the other end of the tester is used for testing the on-off of the formed wire group, a plurality of groups of vibrating needles corresponding to the wire group are fixed at the tail end of the testing position, the wire group is pushed in a reciprocating servo manner through a corresponding first pneumatic module so as to be in contact with the vibrating needles, and the vibrating needles are electrically connected with the tester; and a sorting machine and a first lead screw module used for bearing the wire group which is tested on the first base are fixed on the second base, and the sorting machine is used for receiving the test data of the tester and synchronously controlling the pneumatic clamping jaw to carry out sorting operation according to the test data so as to place the wire group in the sorting box.

Description

Technical Field

[0001] The present invention relates to the technical field of NTC testing, and in particular to an NTC resistance value testing and sorting device. Background Art

[0002] An NTC temperature sensor is a thermistor and a probe, and its principle is that the resistance value decreases rapidly as the temperature rises. After the production of NTC thermistors, it is necessary to detect and sort the resistance values of each resistor.

[0003] Referring to the patent document with the application number CN2021212461184, it discloses a thermistor automatic detection system, including a chassis and a workbench arranged on the chassis; a loading point, a temperature control point, a detection point, and a unloading point arranged on the workbench; a conveying mechanism moving intermittently; a plurality of jaw mechanisms evenly distributed on the conveying mechanism, and the plurality of jaw mechanisms are respectively used to fix the thermistors. The conveying mechanism conveys the plurality of jaw mechanisms to pass through the loading point, the temperature control point, the detection point, and the unloading point in sequence; a loading device that sequentially sorts the thermistors one by one at the loading point and moves them onto the jaw mechanisms; a temperature control device that adjusts the temperature of the thermistors at the temperature control point; a detection mechanism that detects the thermistors at the detection point; and a unloading device that sorts different thermistors at the unloading point.

[0004] Although the above solution proposes a segmented clamping and detection of thermistors, in the actual testing and sorting process, after the defective products in the same group are electrically conductive due to leakage, it will affect the test data of the entire group of wire groups. How to open the feet at the end of the synchronous same-group wire groups to ensure parallelism and neatness is still an unsolved problem. For this reason, we propose an NTC resistance value testing and sorting device to solve the above problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects existing in the prior art. The present invention proposes an NTC resistance value testing and sorting device, which can realize the one-to-one test operation of thermistor wire groups, and perform intelligent sorting synchronously, with high sorting accuracy and faster efficiency.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: an NTC resistance value testing and sorting device, including:

[0007] The first base has an oil tank and a tester fixed on its top. One end of the oil tank is a tooling position for wiring multiple thermistors into a wire group, and the other end is a testing position for performing continuity tests on the formed wire group. The testing position includes a lifting module, a workbench surface, a suction attachment, and a first pneumatic module fixed on the workbench surface. The workbench surface is horizontally arranged and servo-lifted by the lifting module, and multiple groups of spring pins corresponding to the wire group are fixed at its end. The suction attachment is fixed at the output end of the first pneumatic module and is used to movably fix the wire group. The first pneumatic module is used to servo-push the wire group reciprocally to contact the spring pins, and the spring pins are electrically connected to the tester.

[0008] The second base has a sorter and a first lead screw module fixed thereon for receiving the wire group that has completed testing on the first base. The first lead screw module is provided with a second lead screw module and a sorting box on both sides of its track respectively. The output direction of the second lead screw module is perpendicular to the output direction of the first lead screw module. The output end of the second lead screw module is fixed with multiple groups of pneumatic grippers, and each pneumatic gripper is lifted by a corresponding second pneumatic module. The sorter is used to receive the test data of the tester and synchronously control the pneumatic grippers to perform sorting operations according to the test data to place the wire group into the sorting box.

[0009] Further, the tooling position includes a fiber board, a matching positioning seat, and a first wiring tooling seat. The top of the first wiring tooling seat is provided with multiple first wiring grooves. The wire group is laid equidistantly on the fiber board through the first wiring grooves, and the resistance part at the bottom end of the wire group is exposed outside the first wiring tooling seat.

[0010] Further, the oil tank includes a preheating chamber and a testing chamber. Preheating brackets are erected on both sides in the preheating chamber to hold multiple groups of fiber boards. The testing chamber is filled with a testing medium. The lifting module can drive the fiber board to lift and lower, so that the resistance part at the bottom can be fully contacted with the testing medium.

[0011] Further, the suction attachment includes a second wiring tooling seat, a large magnet, and a small magnet. The second wiring tooling seat is provided with at least two columns of second wiring grooves, and the groove directions of adjacent columns of second wiring grooves correspond to the direction of each row of wires in the wire group. The wires in the wire group are grouped in pairs. The large magnet and the small magnet each include multiple units corresponding to each group of wires. The large magnet is located between the two columns of second wiring grooves, and its two ends respectively adsorb and fix each group of wires. The small magnet is used to adsorb the top end of each row of wires in the wire group.

[0012] Furthermore, the lifting module includes a guide column, a guide seat and a driving screw. The top support of the guide column is fixed with a fixed plate. The driving screw is threadedly matched with the fixed plate through a turntable driven by an external servo. The bottom of the driving screw is bolted to the work table. The two ends of the work table are slidably connected to the guide rod through the guide seat.

[0013] Furthermore, the first pneumatic module includes a servo cylinder, a limit slider, a guide rail and a connecting plate, the limit slider is fixed to the bottom surface of the work table, the guide rail is slidably connected to the limit slider and is connected as a whole through the connecting plate, the servo cylinder is fixed to the work table, and its output end is connected and fixed to the center of the connecting plate, and the two ends of the connecting plate are fixed to the second branch line tooling seat through a continuously bent clamping table.

[0014] Furthermore, a T-block is provided on the first screw module to receive the fiberboard, which can drive the T-block to servo-shift in the wire arrangement direction of the wire group. Slots are provided at both ends of the T-block, and a clamping plate is vertically fixed on the front side. A plurality of clamping slots are equidistantly provided on the top of the clamping plate to correspond to the embedded wire group.

[0015] Furthermore, a positioning platform is provided at the end of the second screw module, which can drive the positioning platform to servo-shift perpendicular to the wire arrangement direction of the wire group, and each of the second pneumatic modules is bolted to the positioning platform.

[0016] Furthermore, the pneumatic clamp includes at least one NG position, one 5% resistance accuracy position and multiple 1% resistance accuracy positions, wherein the pneumatic clamps corresponding to the NG position and the 5% resistance accuracy are single-acting, and the pneumatic clamps corresponding to the multiple 1% resistance accuracy positions are synchronously moving, and the sorting box includes multiple pneumatic clamps corresponding to different positions.

[0017] Furthermore, the second base is also fixed with a recovery position on the outer side of the corresponding first screw module, and the recovery position includes a dual-axis module and a material transfer clamp. The material transfer clamp is used to clamp the fiberboard after sorting at the T-block groove, and the dual-axis module is used to pneumatically drive the fiberboard to shift in both directions.

[0018] Compared with the prior art, the beneficial effects of the present invention include: the present invention can uniformly tool thermistors, and then uniformly test them after preheating. During the test, the spring needle tests each row of wires on each wire group one by one. When the two-way wire arrangement is a group, each test defective position can be accurately detected when there is leakage conduction during the test, thereby avoiding the impact on the test data of the entire row of wires. Subsequently, the pneumatic clamp is used in combination with the test data to separately clamp the NG position and the wires with large resistance accuracy deviation, thereby realizing the sorting of good products, with higher efficiency and further improved accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The disclosure of the present invention will be described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0020] Figure 1 Schematically shows a front view proposed according to an embodiment of the present invention;

[0021] Figure 2 Schematically shows an isometric structure diagram proposed according to an embodiment of the present invention;

[0022] Figure 3 Schematically shows that proposed according to an embodiment of the present invention Figure 2 Partial enlarged view at A;

[0023] Figure 4 Schematically shows that proposed according to an embodiment of the present invention Figure 2 Partial enlarged view at B;

[0024] Figure 5 Schematically shows a partial enlarged view of the adsorbing part proposed according to an embodiment of the present invention.

[0025] Reference numerals in the figure:

[0026] 1. First base; 2. Oil tank; 201. Preheating chamber; 202. Testing chamber; 203. Preheating bracket; 3. Testing instrument; 4. Tooling position; 401. Fiber board; 402. Positioning seat; 403. First wire splitting tooling seat; 404. First wire splitting groove; 5. Testing position; 51. Lifting module; 511. Guide post; 512. Guide seat; 513. Driving screw; 514. Fixed plate; 515. Turntable; 52. Workbench surface; 53. Adsorbing part; 531. Second wire splitting tooling seat; 532. Large magnet; 533. Small magnet; 534. Second wire splitting groove; 54. First pneumatic module; 541. Servo cylinder; 542. Limit slider; 543. Guide rail; 544. Connecting plate; 545. Clamping table; 6. Spring pin; 7. Second base; 71. First lead screw module; 711. T-shaped block; 712. Notch; 713. Clamping plate; 714. Card slot; 72. Second lead screw module; 721. Positioning table; 73. Sorting box; 74. Pneumatic gripper; 8. Sorter; 9. Recycling position; 91. Biaxial module; 92. Transfer gripper; 10. Wire group. Detailed implementation manners

[0027] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, those of ordinary skill in the art can propose various interchangeable structural forms and implementation methods. Therefore, the following specific embodiments and drawings are only exemplary illustrations of the technical solution of the present invention, and should not be regarded as all of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0028] Combined with an embodiment of the present invention Figures 1-5 shown.

[0029] As Figure 1 shown, for the overall structure, in this embodiment, an NTC resistance value testing and sorting device includes:

[0030] A first base 1, on which an oil tank 2 and a tester 3 are fixed at the top. One end of the oil tank 2 is a tooling position 4 to wire multiple thermistors into a wire group 10, and the other end is a testing position 5 to perform continuity testing on the formed wire group 10. The testing position 5 includes a lifting module 51, a workbench surface 52, a suction attachment 53, and a first pneumatic module 54 fixed on the workbench surface 52. The workbench surface 52 is horizontally arranged and servo-lifted by the lifting module 51. Multiple groups of spring pins 6 corresponding to the wire group 10 are fixed at its end. The suction attachment 53 is fixed at the output end of the first pneumatic module 54, which is used to movably fix the wire group 10. The first pneumatic module 54 is used to servo-push the wire group 10 back and forth to contact the spring pins 6. The spring pins 6 are electrically connected to the tester 3;

[0031] A second base 7, on which a sorter 8 and a first lead screw module 71 for receiving the wire group 10 that has completed testing on the first base 1 are fixed. The first lead screw module 71 is respectively provided with a second lead screw module 72 and a sorting box 73 on both sides of its track. The output direction of the second lead screw module 72 is perpendicular to the output direction of the first lead screw module 71. Multiple groups of pneumatic grippers 74 are fixed at the output end of the second lead screw module 72. Each pneumatic gripper 74 is lifted by a corresponding second pneumatic module. The sorter 8 is used to receive the test data of the tester 3 and synchronously control the pneumatic grippers 74 to perform sorting operations according to the test data to place the wire group 10 into the sorting box 73.

[0032] Through the above structure, the present invention can uniformly tool the thermistors, and then preheat and warm up for unified testing. During the testing process, the spring pins 6 test each row of wires on each wire group 10 one by one. When testing for leakage conduction in the way of taking 2 rows of wires as a group, it can be accurate to each testing defective position, avoiding the influence on the test data of the entire wire group 10. Subsequently, the pneumatic grippers 74 are used in combination with the test data to separately clamp the NG positions and the wires with large resistance value accuracy deviations, realizing the sorting of good products, with higher efficiency and further improved accuracy.

[0033] The following further elaborates on the specific application structure of the sorting process in detail.

[0034] For the preliminary wire arranging tooling, in this embodiment, the tooling position 4 includes a fiber board 401, a matching positioning seat 402, and a first wire dividing tooling seat 403. A plurality of first wire dividing grooves 404 are formed at the top of the first wire dividing tooling seat 403. A wire group 10 is equidistantly laid on the fiber board 401 through the first wire dividing grooves 404. The resistance part at the bottom end of the wire group 10 is exposed outside the first wire dividing tooling seat 403. The oil tank 2 includes a preheating chamber 201 and a testing chamber 202. Preheating brackets 203 are erected on both sides in the preheating chamber 201 to hold multiple groups of fiber boards 401. A testing medium is placed in the testing chamber 202. The lifting module 51 can drive the fiber board 401 to lift and lower, so that the resistance part at the bottom is in full contact with the testing medium.

[0035] Synchronously, regarding how the second wire dividing tooling fixes the wire group 10, the adsorbing part 53 includes a second wire dividing tooling seat 531, a large magnet 532, and small magnets. At least two columns of second wire dividing grooves are formed on the second wire dividing tooling seat 531, and the groove directions of adjacent columns of second wire dividing grooves correspond to the wiring directions of each row in the wire group 10. The wirings in the wire group 10 are grouped in pairs. Both the large magnet 532 and the small magnets include a plurality of magnets corresponding to each group of wirings. The large magnet 532 is located between the two columns of second wire dividing grooves, and its two ends respectively adsorb and fix each group of wirings. The small magnets are used to adsorb the top ends of each row of wirings in the wire group 10.

[0036] Regarding the driving implementation, the lifting module 51 includes a guide post 511, a guiding seat 512, and a driving screw 513. The top of the guide post 511 is supported and fixed with a fixing plate 514. The driving screw 513 is in threaded cooperation with the fixing plate 514 through a turntable 515 driven by an external servo, and its bottom is bolt-fixed to the workbench surface 52. Both ends of the workbench surface 52 are slidably connected to the guide rod through the guiding seat 512. The first pneumatic module 54 includes a servo cylinder 541, a limit slider 542, a guide rail 543, and a connecting plate 544. The limit slider 542 is fixed to the bottom surface of the workbench surface 52. The guide rail 543 is slidably connected to the limit slide rail and is integrated through the connecting plate 544. The servo cylinder 541 is fixed to the workbench surface 52, and its output end is centrally connected and fixed to the connecting plate 544. Both ends of the connecting plate 544 are fixed to the second wire dividing tooling seat 531 through continuously bent clamping platforms 545.

[0037] Through the above structure, the operator can manually participate in the arrangement of the wire group 10 at the tooling position 4, fix them uniformly with the fiberboard 401, and then store them in batches in the pre-temperature chamber 201 for pre-heating. The purpose of pre-heating is to ensure the temperature requirements of the subsequent wire group 10 to be tested in a short time. After the pre-heating is completed, the lifting module 51 will drive the work table 52 to descend, and simultaneously drive the second branch line tooling seat 531 to shift, until the large magnet 532 and the small magnet can respectively correspond to the corresponding position of each row of wires in the wire group 10, and synchronously pass through the second branch line. The wire groove is embedded, and then the lifting module 51 is shifted to drive the thermistor at the bottom end of the wire group 10 to fully contact with the test medium in the test cavity 202. The medium temperature should meet the corresponding test requirements, and the top first pneumatic module 54 outputs to drive the guide rail 543 to slide in the limit slide rail, so that the wire group 10 fixed by the magnetic attraction at the end is in contact with the spring pin 6 fixed at the end of the workbench 52. After the spring pin 6 is in contact, the test data will be sent to the tester 3 in the form of an electrical signal, including category data such as NG, 5% accuracy, and 1% accuracy.

[0038] After the above-mentioned sorting data is measured, for the subsequent sorting operation, in this embodiment, a T-block 711 is provided on the first lead screw module 71 on the second base 7 to receive the fiberboard 401, which can drive the T-block 711 to servo-shift in the direction of the line group 10. Notches 712 are provided at both ends of the T-block 711, and a clamping plate 713 is vertically fixed on the front side thereof. A plurality of clamping grooves 714 are equidistantly provided on the top of the clamping plate 713 to correspond to the embedded line group 10. A positioning platform 721 is provided at the end of the second lead screw module 72, which can drive the positioning platform 721 to servo-shift perpendicular to the direction of the line group 10, and each of the second pneumatic modules is bolted to the positioning platform 721.

[0039] Correspondingly, the pneumatic clamp 74 includes at least one NG position, one 5% resistance accuracy position and multiple 1% resistance accuracy positions, wherein the pneumatic clamp 74 corresponding to the NG position and the 5% resistance accuracy position is single-motion, and the pneumatic clamp 74 corresponding to the multiple 1% resistance accuracy positions is synchronous motion, and the sorting box 73 includes a plurality of pneumatic clamps 74 corresponding to different positions.

[0040] When the pneumatic clamps 74 corresponding to the NG position and the 5% resistance accuracy are in single motion, the remaining pneumatic clamps 74 are in neutral and do not work. Similarly, when the pneumatic clamps 74 corresponding to the 1% resistance accuracy position are in synchronous motion, the other two pneumatic clamps 74 are in neutral and do not work. After multiple reciprocating clamping, the three different types of thermistors can be sorted and placed in the corresponding sorting boxes 73 simultaneously.

[0041] After that, for the fiberboard 401 that has completed sorting, it can be recycled through the recycling position 9 arranged outside the corresponding first lead screw module 71. The recycling position 9 includes a dual-axis module 91 and a transfer gripper 92. The transfer gripper 92 is used to grip the sorted fiberboard 401 at the notch 712 of the T-shaped block 711, and the dual-axis module 91 is used to pneumatically drive the fiberboard 401 to move bidirectionally. The pneumatic implementation processes of the dual-axis module 91, the pneumatic gripper 74, and the transfer gripper 92 are all common technical means in the field and will not be elaborated here.

[0042] The technical scope of the present invention is not limited to the content described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. An NTC resistance test and sorting device, characterized in that: include: A first base, with an oil tank and a tester fixed on the top, one end of the oil tank is a tooling position for tooling a plurality of thermistors into a wire group, and the other end is a test position for conducting a continuity test on the formed wire group, the test position comprises a lifting module, a work surface, an adsorbent, and a first pneumatic module fixed on the work surface, the work surface is arranged horizontally and is servo-lifted by the lifting module, and a plurality of groups of spring pins corresponding to the wire group are fixed at its end, the adsorbent is fixed at the output end of the first pneumatic module, and is used to movably fix the wire group, the first pneumatic module is used to push the wire group to contact with the spring pin by reciprocating servo, and the spring pin is electrically connected to the tester; A second base is fixed with a sorting machine and a first screw module for receiving the wire group that has finished testing on the first base, the first screw module is respectively provided with a second screw module and a sorting box on both sides of its track, the output direction of the second screw module is perpendicular to the output direction of the first screw module, a plurality of pneumatic clamps are fixed to the output end of the second screw module, each of the pneumatic clamps is lifted and lowered by the corresponding second pneumatic module, the sorting machine is used for receiving the test data of the tester and synchronously controlling the pneumatic clamps to perform sorting operations according to the test data so as to place the wire group in the sorting box.

2. The NTC resistance value testing and sorting device according to claim 1, characterized in that: The tooling position includes a fiberboard and a matching positioning seat and a first wire-dividing tooling seat. A plurality of first wire-dividing grooves are provided on the top of the first wire-dividing tooling seat. Wire groups are evenly laid on the fiberboard through the first wire-dividing grooves. The resistor portion at the bottom end of the wire group is exposed from the first wire-dividing tooling seat.

3. The NTC resistance value testing and sorting device according to claim 2, characterized in that: The oil tank includes a preheating chamber and a test chamber. Preheating brackets are set on both sides of the preheating chamber to hold multiple groups of fiberboards. The test chamber contains a test medium. The lifting module can drive the fiberboard to rise and fall so that the bottom resistance part can fully contact with the test medium.

4. An NTC resistance testing and sorting device according to any one of claims 1 to 3, characterized in that: The adsorption component includes a second wire splitting fixture seat, a large magnet and a small magnet. The second wire splitting fixture seat is provided with at least two rows of second wire splitting grooves, and the second wire splitting grooves in adjacent rows correspond to the direction of each row of wires in the wire group. The rows of wires in the wire group are grouped in pairs. The large magnet and the small magnet each include a plurality of corresponding to each group of rows of wires. The large magnet is located between two rows of the second wire splitting grooves, and its two ends respectively adsorb and fix each group of rows of wires. The small magnet is used to adsorb the top of each row of wires in the wire group.

5. The NTC resistance testing and sorting device according to claim 4, characterized in that: The lifting module includes a guide column, a guide seat and a driving screw. The top support of the guide column is fixed with a fixed plate. The driving screw is threadedly matched with the fixed plate through a turntable driven by an external servo. The bottom of the driving screw is bolted to the work surface. The two ends of the work surface are slidably connected to the guide rod through the guide seat.

6. The NTC resistance value testing and sorting device according to claim 5, characterized in that: The first pneumatic module includes a servo cylinder, a limit slider, a guide rail and a connecting plate. The limit slider is fixed to the bottom surface of the work table. The guide rail is slidably connected to the limit slider and is connected as a whole through the connecting plate. The servo cylinder is fixed to the work table, and its output end is connected and fixed to the center of the connecting plate. Both ends of the connecting plate are fixed to the second branch line fixture through a continuously bent clamping table.

7. The NTC resistance testing and sorting device according to claim 2, characterized in that: The first screw module is provided with a T-block to receive the fiberboard, which can drive the T-block to servo-shift in the wire arrangement direction of the wire group. Slots are provided at both ends of the T-block, and a clamping plate is vertically fixed on the front side. A plurality of slots are equidistantly provided on the top of the clamping plate to correspond to the embedded wire group.

8. The NTC resistance value testing and sorting device according to claim 7, characterized in that: A positioning platform is disposed at the end of the second lead screw module, which can drive the positioning platform to servo-shift perpendicularly to the wire arrangement direction of the wire group, and each of the second pneumatic modules is bolted to the positioning platform.

9. The NTC resistance testing and sorting device according to claim 8, characterized in that: The pneumatic clamps include at least one NG position, one 5% resistance accuracy position and multiple 1% resistance accuracy positions, wherein the pneumatic clamps corresponding to the NG position and the 5% resistance accuracy are single-acting, and the pneumatic clamps corresponding to the multiple 1% resistance accuracy positions are synchronously moving, and the sorting box includes multiple pneumatic clamps corresponding to different positions.

10. The NTC resistance value testing and sorting device according to claim 7, characterized in that: The second base is also fixed with a recovery position on the outer side of the corresponding first screw module. The recovery position includes a dual-axis module and a material transfer clamp. The material transfer clamp is used to clamp the fiberboard after sorting at the T-block groove, and the dual-axis module is used to pneumatically drive the fiberboard to shift in both directions.

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