CN214953918U

CN214953918U - Multistation test fixture

Info

Publication number: CN214953918U
Application number: CN202120371899.3U
Authority: CN
Inventors: 林泽勇; 陈毅洲; 王艺龙; 陈江辉; 吴任甲
Original assignee: Zhangzhou Zhonghuan Technology Co ltd
Current assignee: Zhangzhou Zhonghuan Technology Co ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-11-30
Anticipated expiration: 2031-02-08

Abstract

The utility model provides a multistation test fixture, include: testing the main board; the test device comprises a turntable, a test device and a control device, wherein the turntable is provided with a plurality of test placing positions at intervals along the rotation direction, and the test placing positions are used for placing a PCB to be tested; each test placing position is correspondingly provided with a test needle bed plate, and a test thimble of the test needle bed plate is used for contacting a test point of the PCB; the turntable rotates to drive each test placing position to correspond to each test needle bed plate in sequence, and a test thimble of each test needle bed plate is electrically connected with the test mainboard. By the technical scheme, the test tool with high test efficiency for testing the PCB can be provided.

Description

Multistation test fixture

Technical Field

The utility model relates to a multistation test fixture.

Background

The circuit board can carry out function detection to the circuit board in the manufacturing process, and in the prior art, the circuit board can be automatically tested, however, the existing function detection is only to carry out the test by a single tool, so that the operation steps are frequent, the test efficiency is low, and the test effect is limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the above-mentioned prior art, provide a multistation test fixture.

In order to solve the technical problem, the utility model provides a multistation test fixture, include:

testing the main board;

the test device comprises a turntable, a test device and a control device, wherein the turntable is provided with a plurality of test placing positions at intervals along the rotation direction, and the test placing positions are used for placing a PCB to be tested;

each test placing position is correspondingly provided with a test needle bed plate, and a test thimble of the test needle bed plate is used for contacting a test point of the PCB;

the turntable rotates to drive each test placing position to correspond to each test needle bed plate in sequence, and a test thimble of each test needle bed plate is electrically connected with the test mainboard.

Preferably, the testing needle bed plate is arranged below the turntable and is controlled to move upwards and contact with the PCB on the testing placement position.

Preferably, the testing needle bed board is connected with a driving cylinder, and the driving cylinder drives the testing needle bed board to move upwards.

Preferably, the carousel is provided with a plurality of tray boards along the direction of rotation, the tray board defines out the test places the position.

Preferably, the PCB testing device further comprises a positioning device, the positioning device is arranged above the turntable, and when the PCB is tested, the positioning device moves downwards and fixes the PCB on the tray plate in a positioning manner.

Preferably, the positioning device comprises a positioning cylinder and a plurality of positioning rods, and the positioning cylinder drives the positioning rods to press the PCB.

Preferably, still include step motor, step motor connects the carousel, step motor drives the carousel rotates.

Preferably, the test system further comprises a display screen for displaying the test result, and the display screen is electrically connected with the test mainboard.

Preferably, the test system further comprises a starting switch and an emergency stop switch, and the starting switch and the emergency stop switch are electrically connected with the test mainboard.

Preferably, 3 test placing positions and 3 test needle bed boards are arranged.

Compared with the prior art, the technical scheme of the utility model possess following beneficial effect:

the multi-station testing tool can place a plurality of PCB boards at one time, and the PCB boards can sequentially correspond to different testing needle bed boards when the rotary disc rotates, so that different testing results can be obtained.

This multistation test fixture can once only load a plurality of PCB boards, test the different test points of PCB board on every station, for example when original simplex position test, need wait for 21 seconds, after dividing into 3 stations, every station only needs test 7 seconds, when getting a PCB board at every turn, can save between two thirds, only need 7 seconds can test all test points of PCB board, can save time, need not to wait for, efficiency of software testing increases.

Drawings

Fig. 1 is a front view of a multi-station testing tool according to a preferred embodiment of the present invention;

fig. 2 is a schematic plan view of a turntable according to a preferred embodiment of the present invention.

Detailed Description

The invention is further described with reference to the drawings and the detailed description.

Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below", and other directional terms, will be understood to have their normal meaning and refer to those directions as they normally relate to when viewing the drawings. Unless otherwise indicated, the directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.

The terms "first," "second," and the like as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

Referring to fig. 1-2, a multistation test fixture 100, multistation test fixture 100 includes test mainboard 1, carousel 2 and a plurality of test needle bed board 3, carousel 2 is provided with a plurality of tests along the direction of rotation interval and places position 21, the test is placed the position 21 and is used for placing the PCB board that awaits measuring, and each test is placed the position 21 and is provided with a test needle bed board 3 correspondingly, the test thimble 32 of test needle bed board 3 is used for contacting the test point of PCB board.

TE test software is built in the test main board 1, the test main board 1 collects voltage on the PCB board through the test needle bed board 3, the multi-station test tool 100 further comprises a display screen 9, the display screen 9 is electrically connected with the test main board 1, the display screen 9 is used for displaying a test result, for example, PASS (PASS) or FALL (fail) can be displayed on the display screen 9, and the test main board 1 can also upload and store test data to the UMS platform. In this embodiment, the test motherboard 1 is a computer host, which can be operated by a computer keyboard and input control parameters, and will not be described herein again.

Multistation test fixture 100 includes frame 4, carousel 2 rotates to set up on frame 4, test needle bed board 3 sets up the below of carousel 2, test needle bed board 3 is controlled to move up and places the PCB board contact on the position 21 with the test. The testing needle bed plate 3 is connected with a driving cylinder 31, and the driving cylinder 31 drives the testing needle bed plate 3 to move upwards.

The rotary disk 2 is provided with a plurality of tray plates 22 along the direction of rotation, the tray plates 22 delimiting the test placement locations 21. The multi-station test tool 100 further comprises a positioning device 5, wherein the positioning device 5 is arranged above the turntable 2, and when the PCB is tested, the positioning device 5 moves downwards and fixes the PCB on the tray plate 22 in a positioning manner. The positioning device 5 comprises a positioning cylinder 52 and a plurality of positioning rods 53, and the positioning cylinder 52 drives the positioning rods 53 to press the PCB.

Multistation test fixture 100 still includes step motor 6, step motor 6 is connected carousel 2, step motor 6 drives carousel 2 rotates, step motor 6 can control carousel 2 and rotate specific angle for test is placed position 21 and can be followed one of them test needle bed board 3 and rotated to on another one of them test needle bed board 3.

The multi-station test tool 100 further comprises a starting switch 7 and an emergency stop switch 8, the starting switch 7 and the emergency stop switch 8 are electrically connected with the test main board 1, the starting switch 7 can control the multi-station test tool 100 to work, and the emergency stop switch 8 can control the multi-station test tool 100 to stop working.

In this embodiment, be provided with 3 test places 21 and 3 test needle bed boards 3, multistation test fixture 100 still includes air supply, trachea, air-vent valve and solenoid valve etc. the air supply provides the energy for location cylinder 52 and drive actuating cylinder 31 through the trachea to through air-vent valve and solenoid valve control location cylinder 52 and drive actuating cylinder 31 switching, no longer describe herein.

When the multi-station test fixture is used, a PCB can be placed on the test placement position 21, an operator starts the multi-station test fixture 100 through the starting switch 7, the positioning cylinder 52 drives the positioning rod 53 to move downwards and apply pressure to the PCB, the driving cylinder 31 drives the test needle bed plate 3 to move upwards and contact with test points of the PCB, and at the moment, the PCB on the three test placement positions 21 is tested completely. Subsequently, the positioning cylinder 52 drives the positioning rod 53 to move upwards, the stepping motor 6 drives the turntable 2 to rotate by a certain angle, and at the moment, each test placement position 21 can rotate from one of the test needle bed plates 3 to the other test needle bed plate 3, so that the above work flow is repeated, and each PCB can obtain three different test data.

The above, only be the preferred embodiment of the present invention, but the design concept of the present invention is not limited to this, and any skilled person familiar with the technical field is in the technical scope disclosed in the present invention, and it is right to utilize this concept to perform insubstantial changes to the present invention, all belong to the act of infringing the protection scope of the present invention.

Claims

1. The utility model provides a multistation test fixture which characterized in that includes:

testing the main board;

2. The multi-station testing tool according to claim 1, characterized in that: the test needle bed board is arranged below the rotary table and is controlled to move upwards and contact with the PCB on the test placing position.

3. The multi-station testing tool according to claim 2, characterized in that: the test needle bed board is connected with a drive cylinder, the drive cylinder drives the test needle bed board to move upwards.

4. The multi-station testing tool according to claim 1, characterized in that: the carousel is provided with a plurality of tray boards along the direction of rotation, the tray board is defined out the test is placed the position.

5. The multi-station testing tool according to claim 4, wherein: still include positioner, positioner sets up the top of carousel, when the test of PCB board, positioner moves down and fixes the PCB location on the tray board.

6. The multi-station testing tool according to claim 5, characterized in that: the positioning device comprises a positioning cylinder and a plurality of positioning rods, and the positioning cylinder drives the positioning rods to apply pressure to the PCB.

7. The multi-station testing tool according to claim 4, wherein: still include step motor, step motor connects the carousel, step motor drives the carousel rotates.

8. The multi-station testing tool according to claim 1, characterized in that: the test device further comprises a display screen for displaying the test result, and the display screen is electrically connected with the test mainboard.

9. The multi-station testing tool according to claim 1, characterized in that: the test device also comprises a starting switch and an emergency stop switch, wherein the starting switch and the emergency stop switch are electrically connected with the test mainboard.

10. The multi-station testing tool according to claim 1, characterized in that: is provided with 3 test placing positions and 3 test needle bed boards.