CN220525937U - Withstand voltage test machine - Google Patents

Abstract

The utility model discloses a withstand voltage testing machine, comprising: a feeding assembly; the feeding device comprises at least two feeding platforms, wherein the top of each feeding platform is provided with a feeding sucker; the test assembly comprises test jigs which are in one-to-one correspondence with the feeding platforms; the blanking assembly comprises blanking suckers in one-to-one correspondence with the testing jigs, and the blanking assembly further comprises a first placement area and a second placement area. The pressure-resistant testing machine provided by the utility model can realize synchronous testing of a plurality of testing jigs on a plurality of PCBs, and the plurality of testing jigs can be connected to the same pressure-resistant testing machine for testing, so that the testing efficiency is improved under the condition of not affecting the testing duration requirement.

Description

Withstand voltage test machine

Technical Field

The utility model relates to the field of withstand voltage test, in particular to a withstand voltage test machine.

Background

In the PCB manufacturing industry, voltage withstand test is carried out aiming at the general requirements of power panel delivery, and the working principle of the voltage withstand test is as follows: the withstand voltage value born by the insulating material of the instrument is detected by applying AC/DC high-voltage current with a certain time rating between the insulating part and the electrified part, because in daily operation of the instrument, not only the influence caused by the rated operating voltage of the instrument is considered, but also the overvoltage influence (such as short circuit or misoperation) which is greatly higher than the rated voltage value in a short time is considered, under the action of the overvoltage, the structure of the insulating material can be damaged, breakdown can occur when the maximum value born by the insulating material is exceeded, the equipment is caused to operate abnormally, and the safety of operators can be endangered by electric shock. The withstand voltage test is to apply a value several times higher than the normal voltage to the product for a period of time, if the leakage current is within a prescribed range in a prescribed time, the insulation performance is normal, and if breakdown occurs, it is abnormal;

the current general test method in industry is to use a full-automatic voltage withstand and withstand test machine for testing, and can realize automatic folding and unfolding board and automatic voltage withstand test, but because parameters of voltage withstand test comprise a plurality of test parameters such as boosting time, dwell time, depressurization time, highest voltage value and the like; the test parameters are fixed values, the overall test speed can not be improved by improving the test speed of a single PCB, so that the voltage withstand test efficiency of the PCB is very low, and the test speed can only be 100 pieces/h for the PCB with 29 groups of test points; the requirements on the test efficiency cannot be met.

Disclosure of Invention

The present utility model is directed to solving, at least to some extent, one of the problems in the related art. Therefore, the utility model aims to provide a pressure-resistant testing machine, which can realize synchronous testing of a plurality of testing jigs on a plurality of PCBs, and the plurality of testing jigs can be connected to the same pressure-resistant testing machine for testing, so that the testing efficiency is improved under the condition of not influencing the testing duration requirement.

In order to achieve the above purpose, the present application adopts the following technical scheme: a pressure resistance tester, comprising:

a feeding assembly; the feeding device comprises at least two feeding platforms, wherein the top of each feeding platform is provided with a feeding sucker;

the test assembly comprises test jigs which are in one-to-one correspondence with the feeding platforms;

the blanking assembly comprises blanking suckers in one-to-one correspondence with the testing jigs, and the blanking assembly further comprises a first placement area and a second placement area.

Further, an inductor is arranged on the side edge of the feeding platform, and the inductor is opposite to the PCB stacking plate in the feeding platform.

Further, the feeding platform is located in the lifting sliding rail, the feeding platform is connected with the lifting driving piece, and the lifting driving piece is in communication connection with the inductor.

Further, the test fixture comprises a bottom plate, a high-voltage output box and a test station, wherein the high-voltage output box is positioned on the side edge of the test station, a test needle connected with a bonding pad in the PCB is arranged in the test station, and the test needle is electrically connected with the high-voltage output box.

Further, the test needle comprises a first test needle and a second test needle, the first test needle is electrically connected with a first needle seat in the high-voltage output box, the second test needle is electrically connected with a second needle seat in the high-voltage output box, the first test needle and the second test needle are connected with bonding pads in different networks in the PCB, and the first needle seat and the second needle seat are respectively communicated with the anode and the cathode of the voltage withstanding tester.

Further, the test fixture further comprises a high-voltage output parallel box, the high-voltage output parallel box is electrically connected with the high-voltage output box, and the high-voltage output parallel boxes in each test fixture are electrically connected.

Further, the high-voltage output parallel box comprises a third needle seat and a fourth needle seat, wherein the first needle seat is electrically connected with the third needle seat, and the second needle seat is electrically connected with the fourth needle seat; the third needle seats in all the test jigs are connected together, and the fourth needle seats in all the test jigs are connected together.

Further, test jigs in the test assembly are stacked in sequence in the vertical direction, the top of test jigs is provided with the holding down plate, connects through the spring spare between two adjacent test jigs.

Further, include two test jigs in the test assembly, two test jigs stack the setting in vertical direction, the top of test jig is provided with the holding down plate, connects through the spring spare between two test jigs.

Further, the test assembly further comprises a movable bottom plate and a fixed bottom plate, the test jig at the top is placed on the movable bottom plate, the test jig at the bottom is placed on the fixed bottom plate, guide posts are arranged on two sides of the movable bottom plate and the fixed bottom plate, and the guide posts between the movable bottom plate and the fixed bottom plate are nested with springs.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the application provides a withstand voltage test machine includes: the device comprises a feeding assembly, a testing assembly and a discharging assembly, wherein the feeding assembly comprises at least two feeding platforms, and a feeding sucker is arranged at the top of each feeding platform; the test assembly comprises test jigs in one-to-one correspondence with the feeding platforms, the blanking assembly comprises blanking suckers in one-to-one correspondence with the test jigs, and the blanking assembly further comprises a first placement area and a second placement area; the application is middle in the material loading sucking disc be arranged in adsorbing the PCB board in the material loading platform one by one in the test fixture, every test fixture corresponds a material loading subassembly and unloading subassembly, and this application can realize a plurality of test fixtures and to the synchronous test of a plurality of PCB boards, and a plurality of test fixtures can be connected to the same withstand voltage test machine in test, ensures that the test efficiency promotes under the condition that does not influence the long requirement of test.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

In the accompanying drawings:

FIG. 1 is a schematic diagram showing the structure of a pressure resistance tester in example 3;

FIG. 2 is a schematic diagram of a single test fixture according to the present application;

FIG. 3 is a schematic diagram of two test tools according to the present application;

reference numerals: 11. a feeding platform; 12. feeding sucking discs; 18. a movable bottom plate; 19. a fixed bottom plate; 20. a bottom plate; 21. a high-voltage output box; 22. a high voltage parallel box; 23. a testing station; 24. a first test needle; 25. a second test needle; 26. a first needle mount; 27. a second needle mount; 28. a third needle mount; 29. a fourth hub; 31. a lower pressing plate; 32. a guide post; 33. a spring; 41. a first placement area; 42. a second placement area; 43. and (5) blanking a sucker.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are merely for convenience of describing the present utility model, not to indicate that the mechanism or element referred to must have specific directions, and thus should not be construed as limiting the present utility model.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, mechanisms, circuits, and methods are omitted so as not to obscure the description of the present utility model with unnecessary detail.

Example 1

Referring to fig. 1-3, the voltage withstanding tester provided in the present application includes:

a feeding assembly; the feeding device comprises at least two feeding platforms 11, wherein a feeding sucker 12 is arranged at the top of each feeding platform 11;

the test assembly comprises test jigs which are in one-to-one correspondence with the feeding platforms 11;

the unloading subassembly, including the unloading sucking disc 43 with test fixture one-to-one, the unloading subassembly still includes that the district 41 is placed to first and the district 42 is placed to the second.

In the present application, the loading platform 11, the testing fixture, the first placement area 41 and the second placement area 42 are in one-to-one correspondence, and each group can realize a complete testing link. The number of the test jigs in the application can be two or more, and can be specifically set according to the number of the welding spot tests which can be realized by the pressure-resistant tester.

The application is middle the material loading sucking disc 12 be arranged in adsorbing the PCB board in the material loading platform 11 to the test fixture one by one, every test fixture corresponds a material loading subassembly and unloading subassembly, and this application can realize a plurality of test fixtures and to the synchronous test of a plurality of PCB boards, and a plurality of test fixtures can be connected to the same withstand voltage test machine in test, make test efficiency promote under the circumstances of guaranteeing not influencing the long requirement of test, make withstand voltage test machine's performance obtain full play simultaneously.

Example 2

Referring to fig. 1-3, the voltage withstanding tester provided in the present application includes:

a feeding assembly; the feeding device comprises at least two feeding platforms 11, wherein a feeding sucker 12 is arranged at the top of each feeding platform 11;

the test assembly comprises test jigs which are in one-to-one correspondence with the feeding platforms 11;

the unloading subassembly, including the unloading sucking disc 43 with test fixture one-to-one, the unloading subassembly still includes that the district 41 is placed to first and the district 42 is placed to the second.

The first placement area 41 and the second placement area 42 in the present application may specifically be a PASS area and an NG area, where a PCB board that is qualified for testing is placed in the PASS area, and a PCB board that is unqualified for testing is placed in the NG area.

Specifically, the side of the loading platform 11 in the present application is provided with an inductor, and the inductor is just opposite to the PCB stacking board in the loading platform 11. The feeding platform 11 is located in the lifting slide rail, the feeding platform 11 is connected with a lifting driving piece, and the lifting driving piece is in communication connection with the inductor.

The material loading platform 11 is used for placing the PCB board of stacking in this application, and the inductor is arranged in monitoring the height of PCB board in the material loading platform 11, along with the material loading sucking disc 12 adsorb the top PCB board and place after in test module, the height of the PCB board in the material loading platform 11 can descend, at this moment, lift driving piece will drive material loading platform 11 and rise, until the inductor senses the height of PCB board in the material loading platform 11 and reaches the setting value, the height of this moment can ensure that material loading sucking disc 12 adsorbs the top PCB board.

The loading platforms 11 in the loading assembly are independently arranged, and can be arranged in parallel in the vertical or horizontal direction, so that space can be saved.

The test fixture in this application includes bottom plate 20, high-voltage output box 21 and test station 23, high-voltage output box 21 is located test station 23's side, be provided with the test needle of being connected with the pad in the PCB board in the test station 23, the test needle with high-voltage output box 21 electricity is connected. As shown in fig. 2, in the present application, the number of test pins is multiple, each test pin corresponds to one network in the PCB board, each network includes multiple test pads, and the test pins may be connected to any pad in the network. The application is directed to voltage withstand tests that require at least two test pins to be connected into different networks of a PCB board, by applying high voltage to pads in the two networks, to determine the electrical resistance between the two networks.

Specifically, the test needle in the test fixture comprises a first test needle 24 and a second test needle 25, a first needle seat 26 in the first test needle 24 and the high-voltage output box 21 is electrically connected, a second needle seat 27 in the second test needle 25 and the high-voltage output box 21 is electrically connected, the first test needle 24 and the second test needle 25 are connected with bonding pads in different networks in the PCB, and the first needle seat 26 and the second needle seat 27 are respectively communicated with the anode and the cathode of the voltage withstanding tester.

The positive pole and the negative pole of withstand voltage test machine are connected to the first needle seat 26 and the second needle seat 27 of high-voltage output box 21 in this application, and first needle seat 26 and second needle seat 27 are connected with first test needle 24 and second test needle 25 electricity in the test station 23 respectively, just so fall the high pressure between withstand voltage test machine positive negative pole and apply to the different networks of PCB board in, through the test of the time preset voltage value of predetermineeing to judge whether withstand voltage performance between these two networks satisfies the design requirement.

In order to realize the simultaneous test of a plurality of test jigs, the test jig of the application further comprises a high-voltage output parallel box, wherein the high-voltage output parallel box is electrically connected with the high-voltage output box 21, and the high-voltage output parallel boxes in each test jig are electrically connected.

Specifically, the high-voltage output parallel box comprises a third needle seat 28 and a fourth needle seat 29, the first needle seat 26 is electrically connected with the third needle seat 28, and the second needle seat 27 is electrically connected with the fourth needle seat 29; the third hubs 28 in all the test jigs are connected together and the fourth hubs 29 in all the test jigs are connected together.

That is, the third hub 28 in all the high-voltage output parallel boxes in this application is connected to the positive electrode of the withstand voltage tester through the first hub 26 in the corresponding high-voltage output box 21, and the fourth hub 29 in all the high-voltage output parallel boxes is connected to the negative electrode of the withstand voltage tester through the second hub 27 in the corresponding high-voltage output box 21. Or the third needle seat 28 in all the high-voltage output parallel boxes is connected to the negative electrode of the pressure-resistant testing machine through the first needle seat 26 in the corresponding high-voltage output box 21, and the fourth needle seat 29 in all the high-voltage output parallel boxes is connected to the positive electrode of the pressure-resistant testing machine through the second needle seat 27 in the corresponding high-voltage output box 21.

As shown in fig. 3, taking two test jigs as an example, the third needle seat 28 in the two high-voltage output parallel boxes are connected together, the fourth needle seat 29 in the two high-voltage output parallel boxes are connected together, meanwhile, the third needle seat 28 in the high-voltage output parallel boxes is connected with the first needle seat 26 in the corresponding high-voltage output box 21, the fourth needle seat 29 in the high-voltage output parallel boxes is connected with the second needle seat 27 in the corresponding high-voltage output box 21, and the first needle seat 26 and the second needle seat 27 in one high-voltage output box 21 are respectively communicated with the positive electrode and the negative electrode of the pressure-resistant tester; the high-voltage output parallel box realizes the parallel connection of the high-voltage output box 21 and the corresponding PCB in different testing jigs, and ensures that the voltage withstanding tester can realize the testing of two or more PCBs simultaneously.

In this application test fixture in the test assembly stacks the setting in proper order in vertical direction, test fixture's top is provided with holding down plate 31, connect through spring 33 between two adjacent test fixture. In this application withstand voltage test machine is in test process, in order to ensure that the position of PCB board can not take place the skew, can fix every PCB board, all test jigs stack in proper order and set up in vertical direction, be provided with the elastic component between the adjacent test jigs simultaneously, when the test jig on top is pushed down to the lower casting die board of top, holding down plate 31 fixes the PCB board of top, because spring 33 spare has the compressibility, holding down plate 31 can drive the spring 33 spare compression in proper order between each test jig, until each test jig forms stacked structure, at this moment, holding down plate 31 fixes the PCB board of top, test jig fixes the PCB board of its below in proper order, and then adopt a holding down plate 31 to realize the fixation of all PCB boards.

As shown in fig. 1, taking two test jigs as an example, the test assembly includes two test jigs, the two test jigs are stacked in the vertical direction, the top of the test jig is provided with a lower pressing plate 31, and the first test jig and the second test jig are connected through an elastic member. The test assembly further comprises a movable bottom plate 18 and a fixed bottom plate 19, the test jig at the top is placed on the movable bottom plate 18, the test jig at the bottom is placed on the fixed bottom plate 19, guide posts 32 are arranged on two sides of the movable bottom plate 18 and the fixed bottom plate 19, and springs 33 are nested in the guide posts 32 between the movable bottom plate 18 and the fixed bottom plate 19.

When the lower casting die board of top pushes down on the test fixture on top, holding down plate 31 fixes the PCB board of top, because spring 33 spare has the compressibility, holding down plate 31 can drive the test fixture compression spring 33 of top until two test fixture butt this moment, and holding down plate 31 fixes the PCB board of top, and the test fixture of top fixes the PCB board of below, and then adopts a holding down plate 31 to realize the fixation of two PCB boards.

According to the PCB testing device, the plurality of testing jigs are used for testing the plurality of PCB boards in parallel, and the testing efficiency is doubled under the condition that the testing duration requirement is not influenced; meanwhile, the pressure-resistant testing machine is simple in structure, and compared with two or more pressure-resistant testing machines, the pressure-resistant testing machine is low in cost, and only the corresponding feeding platform 11, the testing jig and the like are needed to be added in one pressure-resistant testing machine.

It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. A pressure resistance tester, characterized by comprising:

a feeding assembly; the feeding device comprises at least two feeding platforms (11), wherein a feeding sucker (12) is arranged at the top of each feeding platform (11);

the test assembly comprises test jigs which are in one-to-one correspondence with the feeding platforms (11);

the blanking assembly comprises blanking suckers (43) which are in one-to-one correspondence with the testing jigs, and the blanking assembly further comprises a first placement area (41) and a second placement area (42).

2. The pressure-resistant testing machine according to claim 1, wherein an inductor is arranged on the side edge of the feeding platform (11), and the inductor is opposite to the PCB stacking plate in the feeding platform (11).

3. The pressure-resistant testing machine according to claim 2, wherein the feeding platform (11) is located in a lifting sliding rail, the feeding platform (11) is connected with a lifting driving piece, and the lifting driving piece is in communication connection with the sensor.

4. The pressure-resistant testing machine according to claim 1, wherein the testing jig comprises a bottom plate (20), a high-voltage output box (21) and a testing station (23), the high-voltage output box (21) is located at the side edge of the testing station (23), a testing needle connected with a bonding pad in a Printed Circuit Board (PCB) is arranged in the testing station (23), and the testing needle is electrically connected with the high-voltage output box (21).

5. The pressure-resistant testing machine according to claim 4, wherein the testing needle comprises a first testing needle (24) and a second testing needle (25), the first testing needle (24) is electrically connected with a first needle seat (26) in the high-voltage output box (21), the second testing needle (25) is electrically connected with a second needle seat (27) in the high-voltage output box (21), the first testing needle (24) and the second testing needle (25) are connected with bonding pads in different networks in the PCB, and the first needle seat (26) and the second needle seat (27) are respectively communicated with an anode and a cathode of the pressure-resistant testing machine.

6. The pressure-resistant testing machine according to claim 5, wherein the testing jigs further comprise high-voltage output parallel boxes, the high-voltage output parallel boxes are electrically connected with the high-voltage output boxes (21), and the high-voltage output parallel boxes in each testing jig are electrically connected.

7. The pressure-resistant testing machine according to claim 6, wherein the high-voltage output parallel box comprises a third needle seat (28) and a fourth needle seat (29), the first needle seat (26) and the third needle seat (28) are electrically connected, and the second needle seat (27) and the fourth needle seat (29) are electrically connected; third needle bases (28) in all the test jigs are connected together, and fourth needle bases (29) in all the test jigs are connected together.

8. The pressure-resistant testing machine according to claim 4, wherein the testing jigs in the testing assembly are stacked in sequence in the vertical direction, the top of each testing jig is provided with a lower pressing plate (31), and two adjacent testing jigs are connected through a spring (33).

9. The pressure-resistant testing machine according to claim 4, wherein the testing assembly comprises two testing jigs, the two testing jigs are stacked in the vertical direction, a lower pressing plate (31) is arranged at the top of each testing jig, and the two testing jigs are connected through a spring (33).

10. The pressure-resistant testing machine according to claim 9, wherein the testing assembly further comprises a movable bottom plate (18) and a fixed bottom plate (19), the testing jig at the top is placed on the movable bottom plate (18), the testing jig at the bottom is placed on the fixed bottom plate (19), guide posts (32) are arranged on two sides of the movable bottom plate (18) and the fixed bottom plate (19), and the guide posts (32) between the movable bottom plate (18) and the fixed bottom plate (19) are nested with springs (33).