Capacitance testing device capable of performing pre-exclusion

Abstract

The utility model relates to the field of testing devices, in particular to a capacitor testing device capable of performing pre-elimination, which comprises a supporting plate and a conveying belt arranged on the supporting plate, a jig is arranged on the outer surface of the conveying belt, and a trough for matching capacitors is formed on the jig. An electrical property testing station and a charging testing station are distributed on the supporting plate in the rotating conveying direction of the conveying belt, an electrical property testing mechanism and a charging testing mechanism are arranged on the electrical property testing station and the charging testing station respectively, and a defective product discharging station is arranged between the electrical property testing station and the charging testing station. The electrical property testing mechanism is used for testing the electrical property of a base, the defective product discharging station is provided with a defective product discharging mechanism, the defective product discharging mechanism is used for removing defective products detected by the electrical property testing mechanism, and the defective product discharging mechanism further comprises a classified collection assembly. A bad capacitor is prevented from entering a charging test link, so that the accuracy of a subsequent test is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to test device field, concretely relates to the capacitor test device that can carry out pre -elimination. BACKGROUND

[0002] As an indispensable passive component in modern electronic equipment, chip capacitor has a wide range of applications, including but not limited to consumer electronics, automotive electronics, communication equipment, industrial control and other fields, and undertakes key functions such as filtering, energy storage, voltage stabilization and signal coupling. With the development of electronic equipment towards high frequency, miniaturization and high reliability, the performance parameters of chip capacitor directly affect the stability and life of the whole system. Therefore, the testing and sorting of capacitors become the core demand of the production link.

[0003] And the chip capacitor test device is usually based on phased testing, including two parts of testing, one basic electrical performance test group mainly includes using probe to contact the two poles of the capacitor, completing capacity test, ESR (equivalent series resistance) test and open circuit short circuit test, etc., and screening out obvious defective products with parameter out-of-tolerance, and the other charging safety test group mainly includes voltage resistance test, leakage test and insulation test on the capacitors after basic test, etc., to ensure the reliability of capacitor test.

[0004] However, although the existing capacitor test device has made great progress in design and manufacture, there are still some defects and deficiencies, and the chip capacitor completes the basic test and charging test in turn, but the existing test device lacks the pre-elimination function of the basic electrical test defective capacitor when the part of the defective capacitor detected after the basic electrical test enters the charging test, and when the defective product is not immediately sorted out, these capacitors will still enter the subsequent charging test link, affecting the accuracy of subsequent test, at the same time, the defective product may cause secondary failure in the charging test stage, interfere with the accuracy of test results, and the defective product flowing into the subsequent test process is easy to cause the waste of test resources (time, energy consumption, equipment loss), thereby affecting the use and practicability of the test device. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the above defects, providing capacitor test device that can carry out pre-elimination, to solve the technical problem that the chip capacitor lacks the structure of sorting out the defective capacitor of basic electrical test before charging test in the above background technology, resulting in that the defective product enters the subsequent test process, affecting the accuracy of test.

[0006] The utility model aims at solving the above defects, providing capacitor test device that can carry out pre-elimination, to solve the technical problem that the chip capacitor lacks the structure of sorting out the defective capacitor of basic electrical test before charging test in the above background technology, resulting in that the defective product enters the subsequent test process, affecting the accuracy of test.

[0007] The pre-elimination capacitive testing device comprises a support plate and a conveying belt arranged on the support plate, the outer surface of the conveying belt is provided with a plurality of jigs uniformly distributed, the jigs are formed with grooves for matching capacitors, the support plate is provided with an electrical testing station and a charging testing station along the rotating transmission direction of the conveying belt, the electrical testing station and the charging testing station are respectively provided with an electrical testing mechanism and a charging testing mechanism, a defective product discharging station is arranged between the electrical testing station and the charging testing station, a defective product discharging mechanism is arranged on the defective product discharging station, the defective product discharging mechanism is used for removing defective products detected by the electrical testing mechanism, the defective product discharging mechanism comprises a discharging support, a rotating disc and a plurality of clamps arranged on the rotating disc, the discharging support is mounted on the support plate, the rotating disc is mounted on the discharging support and located above the conveying belt, the discharging support is provided with a driving member for driving the rotating disc to rotate, the clamps can move up and down to the jigs, and the defective product discharging mechanism further comprises a classification and collection assembly for classifying and collecting defective products, the classification and collection assembly comprises a movable material receiving seat and a plurality of defective material boxes, and the material receiving seat can classify defective products into corresponding defective material boxes through the driving of a moving module.

[0008] Further in the above description, the discharging support is connected with the rotating disc through a rotating seat, and the rotating disc can drive the clamps to rotate into the classification and collection assembly for classification and discharging through the driving of the driving member.

[0009] The clamps are driven to rotate by the rotating disc, so that the defective products tested by the clamps are classified into corresponding defective material boxes through the material receiving seat, the classification and discharging efficiency of the defective products is improved, and the defective products are reduced to flow into subsequent testing processes.

[0010] Further in the above description, the driving member comprises a speed reducer and a driving motor, the speed reducer is mounted on the discharging support, the output end of the speed reducer is coaxially connected with the rotating seat, and the output shaft of the driving motor is connected with the input end of the speed reducer.

[0011] Further in the above description, the discharging support is provided with a driving cylinder for driving the clamps to move to the jigs, the clamps are connected with the rotating disc through a shaft sleeve, and a reset member is sleeved on the clamps.

[0012] Specifically, the reset member is a spring, when the electrical testing mechanism detects that there is a defective product on the jig, the clamps are driven to press down by the driving cylinder, the defective product is clamped by the clamps, and the rotating disc is rotated into the classification and collection assembly for classification and collection through the reset and upward movement of the reset member, so that the defective product on the jig can be removed, the defective product is reduced to flow into the subsequent charging testing mechanism, and the accuracy and reliability of subsequent testing are ensured.

[0013] Further in the above description, the clamps are composed of negative pressure nozzles, and a vacuum air source is arranged on the rotating disc for providing negative pressure suction to the negative pressure nozzles.

[0014] The driving cylinder can drive the clamp to press down, and the clamp can be adsorbed on the capacitor through negative pressure, so that the material can be taken, the defective products can be pre-excluded, and the defective products can be prevented from flowing into the subsequent test mechanism.

[0015] Further in the above description, the moving module is installed on the discharging support, the moving direction of the moving module is flush with the transmission direction of the conveying belt, the moving module is connected with the material receiving seat through the sliding seat, the material receiving seat is provided with a discharging hole matched with the defective material box, and the moving module can drive the material receiving seat to communicate the discharging hole with the defective material box.

[0016] Optionally, the number of the defective material boxes is matched with the number of the discharging holes, so that different abnormal capacitors can be classified and collected. The material receiving seat is driven by the moving module to move, so that the discharging hole on the material receiving seat corresponds to the defective product, so that the capacitors can be classified and collected according to the defective situation, so that the abnormal defective product can be prevented from entering the subsequent test, and the accuracy of the test is ensured.

[0017] Further in the above description, the support plate is provided with a transmission module, the bottom of the conveying belt is installed on the support plate through the moving plate, the transmission module can drive the conveying belt to move, and one end of the conveying belt is connected with a rotating motor for providing rotating power.

[0018] The conveying belt can be driven by the transmission module to move as a whole, so that the jig on the conveying belt corresponds to the test mechanism, and at the same time, when the abnormal defective product is tested, the transmission module drives the conveying belt to move the jig to a set discharging position, the clamp is used for adsorption and rejection,

[0019] Further in the above description, the charging test mechanism comprises a mounting support, a charging test group and a lifting cylinder, the mounting support is installed on the sliding plate, the charging test group is slidably arranged on one side of the mounting support, and the charging test group is driven by the lifting cylinder to move towards the jig.

[0020] Optionally, the capacitors on the jig can be tested by the charging test group, such as voltage resistance test, leakage test and insulation test. The charging test group is driven by the lifting cylinder to move towards the jig, so that the charging test group contacts the capacitors through the probe and tests them.

[0021] Further in the above description, the electrical test mechanism comprises a vertical plate, a lifting seat, a test fixed seat and a transmission motor, the vertical plate is installed on the support plate, the lifting seat is installed on the side surface of the vertical plate through a sliding piece, the transmission motor is installed on the vertical plate and can control the lifting seat to move up and down through a cam, the test fixed seat is installed on the lifting seat, and the test fixed seat is connected with a test head.

[0022] Optionally, the electric property of the capacitor is tested by the test head, so that the obviously defective product with parameter out of tolerance can be screened out, and the defective capacitor is discharged by the defective product discharging mechanism, so that the defective product is prevented from entering the charging test mechanism with the rotation of the conveying belt, and the accuracy and reliability of the subsequent test are ensured.

[0023] The utility model discloses the beneficial effects of: through the defective product discharging station and the matched defective product discharging mechanism between electric property test station and charging test station, realize the immediate pre-elimination of the defective capacitor after the basic electric property test, avoid the defective capacitor to enter the charging test link, thereby ensure the accuracy of the subsequent test, simultaneously, the pre-elimination function prevents the secondary fault that the defective capacitor can cause in the charging test stage, and the defective product discharging mechanism makes the liftable setting of clamp for clamping the capacitor in the fixture through the action of carousel and clamp, and through the rotation of carousel, the defective capacitor is removed, reduces the interference of defective product flowing through the conveying belt to the subsequent test process, and through the design of movable material receiving seat and multiple defective material boxes, the defective product is effectively classified and collected, and subsequent quality analysis and processing are facilitated, and the overall test efficiency and practicality are improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall structure schematic diagram of right view angle of this embodiment;

[0025] Figure 2 It is the overall structure schematic diagram of left view angle of this embodiment;

[0026] Figure 3 It is the connection structure schematic diagram of charging test mechanism in this embodiment;

[0027] Figure 4 It is the partial structure schematic diagram of this embodiment;

[0028] Figure 5 It is the structure schematic diagram of electric property test mechanism in this embodiment;

[0029] Figure 6 It is the connection structure schematic diagram of defective material box in this embodiment;

[0030] Figure 7 It is the overall structure schematic diagram of defective product discharging mechanism in this embodiment;

[0031] The reference signs in the drawing are respectively: 1-supporting plate, 2-conveying belt, 3-jig, 4-speed reducer, 5-driving motor, 6-driving cylinder, 7-transmission module, 8-moving plate, 9-rotary motor;

[0032] 100-electric property test mechanism, 101-stand, 102-lifting seat, 103-test fixed seat, 104-transmission motor, 105-cam, 106-test head;

[0033] 200-Charging test mechanism, 201-Mounting bracket, 202-Charging test group, 203-Lifting cylinder;

[0034] 300-Defective product unloading mechanism, 301-Unloading bracket, 302-Turntable, 303-Clamp, 304-Classification and collection assembly, 3041-Receiving base, 3042-Defective material box, 3043-Moving module, 3044-Unloading hole. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0036] In this embodiment, refer to Figures 1-7 The specific implementation of the capacitor testing device capable of pre-rejection includes a support plate 1 and a conveyor belt 2 mounted on the support plate 1. The outer surface of the conveyor belt 2 is provided with uniformly distributed fixtures 3, each fixture having a material trough for matching capacitors. Electrical testing stations and charging testing stations are distributed on the support plate 1 along the rotational transmission direction of the conveyor belt 2. Electrical testing mechanisms 100 and charging testing mechanisms 200 are respectively provided at the electrical testing stations and charging testing stations. A defective product unloading station is provided between the electrical testing stations and the charging testing stations. A defective product unloading mechanism 300 is provided at the defective product unloading station to remove defective products detected by the electrical testing mechanism 100. The mechanism 300 includes a feeding bracket 301, a turntable 302, and four clamps 303 mounted on the turntable 302. The feeding bracket 301 is mounted on the support plate 1, and the turntable 302 is mounted on the feeding bracket 301 and located above the conveyor belt 2. The feeding bracket 301 is provided with a driving component for driving the turntable 302 to rotate. The clamps 303 can move up and down towards the fixture 3. The defective product feeding mechanism 300 also includes a sorting and collection component 304 for sorting and collecting defective products. The sorting and collection component 304 includes a movable receiving seat 3041 and multiple defective material boxes 3042. The receiving seat 3041 can sort defective products into the corresponding defective material boxes 3042 by being driven by the moving module 3043.

[0037] The feeding bracket 301 is connected to the turntable 302 via a rotating seat. The turntable 302 can drive the clamp 303 to rotate and enter the sorting and collecting assembly 304 for sorting and feeding by the drive component.

[0038] The turntable 302 drives the fixture 303 to rotate, so that the defective products tested are sorted into the corresponding defective material box 3042 through the receiving seat 3041, thereby improving the sorting and unloading efficiency of defective products and reducing the flow of defective products into subsequent testing processes.

[0039] The driving components include a reducer 4 and a drive motor 5. The reducer 4 is mounted on the unloading bracket 301, and the output end of the reducer 4 is coaxially connected to the rotating seat. The output shaft of the drive motor 5 is connected to the input end of the reducer 4.

[0040] The unloading support 301 is equipped with a drive cylinder 6 for driving the clamp 303 to move toward the fixture 3. The clamp 303 is connected to the turntable 302 through a bushing, and a reset component (not shown) is sleeved on the clamp 303.

[0041] Specifically, the reset component is a spring. When the electrical testing mechanism 100 detects a defective product on the fixture 3, the driving cylinder 6 can drive the clamp 303 to press down, clamp the product, and the reset component will reset and rise, causing the turntable 302 to rotate and enter the sorting and collection component 304 for sorting and collection. This will remove the defective product on the fixture 3, reduce the number of defective products flowing into the subsequent charging testing mechanism 200, and ensure the accuracy and reliability of subsequent tests.

[0042] The clamp 303 is composed of a negative pressure nozzle, and the turntable 302 is provided with a vacuum source for providing negative pressure suction to the negative pressure nozzle.

[0043] The clamp 303 can be driven to press down by the driving cylinder 6, so that the clamp 303 can be attracted by the negative pressure capacitor, thereby picking up the material and pre-removing defective products to prevent them from flowing into the subsequent testing mechanism.

[0044] The moving module 3043 is mounted on the unloading bracket 301. The moving direction of the moving module 3043 is parallel to the transmission direction of the conveyor belt 2. The moving module 3043 is connected to the receiving seat 3041 through a sliding seat. The receiving seat 3041 has a unloading hole 3044 that matches the defective material box 3042. The moving module 3043 can drive the receiving seat 3041 to make the unloading hole 3044 connect with the defective material box 3042 for unloading.

[0045] For example, the receiving base 3041 has multiple discharge holes 3044, each discharge hole 3044 corresponding to a test item, that is, to classify and discharge abnormal defective products for capacitance, ESR, open circuit and short circuit. The number of defective boxes 3042 is matched with the number of discharge holes 3044, so that different abnormal capacitors can be classified and collected.

[0046] The moving module 3043 drives the receiving seat 3041 to move, so that the unloading hole 3044 on the receiving seat 3041 corresponds to the defective product. This allows the capacitors to be classified and collected according to their defective condition, thereby preventing abnormal defective products from entering subsequent tests and ensuring the accuracy of the tests.

[0047] The support plate 1 is provided with a transmission module 7. The bottom of the conveyor belt 2 is installed on the support plate 1 through a movable plate 8, so that the transmission module 7 can drive the conveyor belt 2 to move. One end of the conveyor belt 2 is connected to a rotary motor 9 for providing rotational power.

[0048] The transmission module 7 can drive the conveyor belt 2 to move as a whole, so that the fixture 3 on the conveyor belt 2 corresponds to the testing mechanism. At the same time, when an abnormal defective product is detected, the transmission module 7 drives the conveyor belt 2 to move the fixture 3 to the set unloading position, and the clamp 303 is used to absorb and reject it.

[0049] The charging test mechanism 200 includes a mounting bracket 201, a charging test group 202, and a lifting cylinder 203. The mounting bracket 201 is mounted on a sliding plate, and the charging test group 202 is slidably disposed on one side of the mounting bracket 201. The lifting cylinder 203 can drive the charging test group 202 to move toward the fixture 3.

[0050] Optionally, the charging test group 202 can be used to perform withstand voltage tests, leakage current tests, and insulation tests on the capacitor on the fixture 3. The charging test group 202 is driven by the lifting cylinder 203 to move towards the fixture 3, so that the charging test group 202 contacts the capacitor through the probe and performs the test.

[0051] The electrical testing mechanism 100 includes a vertical plate 101, a lifting seat 102, a test fixing seat 103, and a drive motor 104. The vertical plate 101 is mounted on the support plate 1. The lifting seat 102 is mounted on the side of the vertical plate 101 via a sliding member. The drive motor 104 is mounted on the vertical plate 101 and can control the lifting seat 102 to move up and down via a cam 105. The test fixing seat 103 is mounted on the lifting seat 102, and a test head 106 is connected to the test fixing seat 103.

[0052] For example, three test fixtures 103 are provided, and three test heads 106 for capacitance testing, ESR (equivalent series resistance) testing, and open-circuit and short-circuit testing are respectively connected to the three test fixtures 103. The capacitors are electrically tested through the test heads 106, so that obviously defective products with parameters out of tolerance can be screened out. Then, the defective products are unloaded by the defective product unloading mechanism 300, which prevents the defective products from entering the charging test mechanism 200 with the rotation of the conveyor belt 2, and ensures the accuracy and reliability of subsequent tests.

[0053] Specifically, by pre-excluding defective products, their ineffective processing in charging tests and subsequent processes is avoided, thereby saving testing time, energy consumption, and equipment wear and tear, and improving the practicality of the testing device.

[0054] The specific action process in this embodiment is as follows:

[0055] Feeding: The capacitors are placed into the feed trough of fixture 3 by an external feeding mechanism;

[0056] Electrical testing: The capacitor on the fixture 3 is tested by the electrical testing mechanism 100. Specifically, the drive motor 104 drives the lifting seat 102 to move toward the fixture 3 via the cam 105, so that the lifting seat 102 drives the test fixing seat 103 and the test head 106 to descend and contact the capacitor in the material tank. The probe of the test head 106 is used to test the capacitor. There are three test heads 106. The three test heads 106 are used to perform capacitance test, ESR (equivalent series resistance) test and open circuit and short circuit test respectively.

[0057] When an abnormality is detected in the capacitor, the rotation of the conveyor belt 2 causes the fixture 3 to enter the defective product unloading station. The defective product unloading mechanism 300 clamps and removes the defective capacitor in the fixture 3. The drive motor 5 drives the turntable 302 to rotate, causing a clamp 303 on the turntable 302 to rotate to below the drive cylinder 6. Through the movement of the transmission module 7 and the conveyor belt 2, the abnormal fixture 3 is moved to below the clamp 303. The drive cylinder 6 presses down on the clamp 303. The clamp 303 uses negative pressure to absorb the capacitor in the material tank and enters the sorting and collection component 304 under the rotation of the turntable 302.

[0058] Classification: An external controller records the abnormalities of defective capacitors, which in turn controls the moving module 3043 to move the receiving seat 3041. This allows the receiving holes on the receiving seat 3041 to be matched with the abnormal conditions of the capacitors. Specifically, there are four defective boxes 3042, corresponding to capacitance defects, ESR (equivalent series resistance) defects, open circuit defects, and short circuit defects, respectively. The clamp 303 releases the capacitors, which slide from the receiving holes through the hopper into the corresponding defective boxes 3042, thus enabling the classification and collection of defective capacitors.

[0059] Charging test: The capacitors that have passed the electrical test are transported into the charging test mechanism 200 by the conveyor belt 2. The charging test group 202 conducts tests such as withstand voltage test, leakage current test and insulation test on the capacitors. This pre-discharge reduces the number of defective capacitors entering the charging test group 202, ensuring the accuracy of subsequent tests and improving the overall testing efficiency and practicality.

[0060] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A pre-elimination capacitive testing device, comprising a support plate and a conveying belt arranged on the support plate, an outer surface of the conveying belt is provided with a plurality of uniformly distributed jigs, the jigs are formed with grooves for matching capacitors, the support plate is provided with an electrical testing station and a charging testing station along a rotating transmission direction of the conveying belt, the electrical testing station and the charging testing station are respectively provided with an electrical testing mechanism and a charging testing mechanism, characterized in that: The electric property testing station and the charging testing station are provided with a defective product discharging station, a defective product discharging mechanism is arranged on the defective product discharging station, the defective product discharging mechanism is used for removing defective products detected by the electric property testing mechanism, the defective product discharging mechanism comprises a discharging support, a rotating disc and a plurality of clamps arranged on the rotating disc, the discharging support is installed on the supporting plate, the rotating disc is installed on the discharging support and located above the conveying belt, the discharging support is provided with a driving member for driving the rotating disc to rotate, the clamp can move up and down relative to the jig, and the defective product discharging mechanism further comprises a classification and collection assembly for classifying and collecting defective products, the classification and collection assembly comprises a movable material receiving seat and a plurality of defective material boxes, and the material receiving seat can classify defective products into corresponding defective material boxes through the driving of the moving module.

2. The pre-elimination capable capacitance testing device according to claim 1, wherein: The discharging support is connected with the rotating disc through a rotating seat, and the rotating disc can drive the clamp to rotate into the classification and collection assembly for classification and discharging through the driving of the driving member.

3. The pre-dischargeable capacitance testing device of claim 2, wherein: The driving member comprises a speed reducer and a driving motor, the speed reducer is installed on the discharging support, the output end of the speed reducer is coaxially connected with the rotating seat, and the output shaft of the driving motor is connected with the input end of the speed reducer.

4. The pre-dischargeable capacitance testing device of claim 1, wherein: The discharging support is provided with a driving cylinder for driving the clamp to move relative to the jig, the clamp is connected with the rotating disc through a shaft sleeve, and a reset member is sleeved on the clamp.

5. The pre-dischargeable capacitance testing device of claim 4, wherein: The clamp is composed of a negative pressure suction nozzle, and the rotating disc is provided with a vacuum air source for providing negative pressure suction to the negative pressure suction nozzle.

6. The pre-dischargeable capacitance testing device of claim 1, wherein: The moving module is installed on the discharging support, the moving direction of the moving module is flush with the conveying direction of the conveying belt, the moving module is connected with the material receiving seat through a sliding seat, the material receiving seat is provided with a discharging hole matched with the defective material box, and the moving module can drive the material receiving seat to communicate the discharging hole with the defective material box for discharging.

7. The pre-dischargeable capacitance testing device of any one of claims 1-6, wherein: The supporting plate is provided with a transmission module, the bottom of the conveying belt is installed on the supporting plate through a moving plate, the transmission module can drive the conveying belt to move, and one end of the conveying belt is connected with a rotating motor for providing rotating power.

8. The pre-dischargeable capacitance testing device of claim 7, wherein: The charging testing mechanism comprises a mounting support, a charging testing group and a lifting cylinder, the mounting support is installed on the sliding plate, the charging testing group is slidably arranged on one side of the mounting support and can be driven by the lifting cylinder to move relative to the jig.

9. The pre-dischargeable capacitance testing device of claim 7, wherein: The electric property testing mechanism comprises a vertical plate, a lifting seat, a testing fixed seat and a transmission motor, the vertical plate is installed on the supporting plate, the lifting seat is installed on the side surface of the vertical plate through a sliding member, the transmission motor is installed on the vertical plate and can control the lifting seat to move up and down through a cam, the testing fixed seat is installed on the lifting seat, and the testing fixed seat is connected with a testing head.

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