CN209946315U

CN209946315U - Low-resistance device for testing product

Info

Publication number: CN209946315U
Application number: CN201920463398.0U
Authority: CN
Inventors: 郑海军; 陈绍智; 陈雪; 陈月; 熊小波; 王韦; 蒋国军; 张勇
Original assignee: Sichuan Ruihong Electronic Technology Co Ltd
Current assignee: Sichuan Ruihong Electronic Technology Co Ltd
Priority date: 2019-04-08
Filing date: 2019-04-08
Publication date: 2020-01-14
Anticipated expiration: 2029-04-08

Abstract

The utility model relates to a test product low resistance equipment, including dust free box, carousel, control panel, host computer and probe box, the carousel is installed and is driven by motor A in the dust free box, the carousel uses the centre of a circle as central annular distribution to have a plurality of centre gripping stations, centre gripping station is used for the centre gripping needs to carry out the target product of low resistance test; at least two guide rails are arranged above the turntable and are positioned right above different clamping stations, a lead screw is arranged on each guide rail, at least two probe boxes are arranged on each guide rail, the probe boxes are erected on the lead screws, and the lead screws are controlled by a motor B to rotate so as to realize the back-and-forth movement of the probe boxes; and the upper computer completes the control of the whole detection process. According to the scheme, a set of circularly reciprocating stations is designed, so that the production line type low-resistance detection is realized, and the testing speed is increased.

Description

Low-resistance device for testing product

Technical Field

The utility model relates to a low resistance detection area, concretely relates to test product low resistance equipment.

Background

The printed circuit board, also known as printed circuit board, printed board for short, pcb (printed circuit board) for short, or pwb (printed wiring board), is cut into a certain size by using an insulating board as a base material, and at least one conductive pattern is attached to the insulating board and is provided with holes (such as element holes, fastening holes, metalized holes, and the like) for replacing a chassis of an electronic component in the prior art and realizing the mutual connection of the electronic component. Such boards are known as "printed" circuit boards because they are made using electronic printing. The product must pass the low resistance detection technology in the production process, fly the needle tester to be equipped with 4-8 test probes that are driven by motor through the belt drive, the movement of probe includes X, Y, Z three directions, need to convert original CAD data into usable test data file before the test, fly the needle test and carry on the open circuit test first, wherein open circuit test principle is to exert the electric current to one end of a certain network to be measured, measure at another end of this network. And judging whether the network is conducted or not according to the change value of the current, and judging whether the network is in a resistance size or in a disconnection state.

The prior art has the following disadvantages: because the PCB is generally perforated according to the product requirements, the hole positions are irregular, the flying probe control becomes extremely irregular, only one-by-one control can be carried out through an upper computer, coordinates in three directions of X, Y, Z need to be readjusted after each vacancy is detected so as to carry out the detection of the next hole position, and the reciprocating mode enables the testing speed to be slow and the efficiency to be low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a test product low resistance equipment, through designing one set of reciprocal station of circulation, realize pipelined's low resistance and detect to improve test speed.

The purpose of the utility model is realized through the following technical scheme:

a low resistance device for testing products comprises a dust-free box, a rotary table, a control panel, an upper computer and a probe box, wherein the rotary table is arranged in the dust-free box and driven by a motor A, a plurality of clamping stations are annularly distributed on the rotary table by taking the circle center as the center, and the clamping stations are used for clamping target products to be tested for low resistance;

at least two guide rails are arranged above the turntable and are positioned right above different clamping stations, a lead screw is arranged on each guide rail, at least two probe boxes are arranged on each guide rail, the probe boxes are erected on the lead screws, and the lead screws are controlled by a motor B to rotate so as to realize the back-and-forth movement of the probe boxes;

and the upper computer completes the control of the whole detection process.

The scheme utilizes the fact that stations are arranged on a rotary table, the same hole site of a target product on each station is fixed for a certain fixed position, namely the same hole sites of different target products are required to pass through the same point in the rotating process of the rotary table, for example, three hole sites exist on one target product, three probe boxes are arranged at the target positions of the three hole sites, and the low resistance test of all target products on the rotary table can be completed after the rotary table rotates for one circle, so that the repeated adjustment of the positions of the probe boxes in the XYZ directions is avoided, the batch detection can be realized by adjusting the hole sites at the same position once, the whole production line is designed in a circulating mode, so the number of the hole sites is adjusted for many times, in the past, each product is adjusted once when being detected, the scheme is that a plurality of products are adjusted once, for example, the number of the stations is 6, the detection of 6 products can be completed only by adjusting once.

Furthermore, in the low-resistance detection state, the probe box is positioned above different hole sites of different target products;

or the probe boxes are positioned above the same hole site of different target products.

That is, the scheme provides two working modes, one mode is to detect the same hole site at N times of speed, and the other mode is to detect N hole sites at the same time at single speed, wherein N is the number of the probe boxes.

Furthermore, the probe box consists of a box body, a driving wheel, a follow-up gear, a transmission meshing plate, a sliding block, a probe and a sliding chute;

the box body is meshed with the screw rod, a motor C is arranged in the box body, one side of a rotating shaft of the motor C, which extends out of the box body, is connected with a driving wheel, a follow-up gear is arranged below the driving wheel, and the driving wheel and the follow-up gear are driven by a motor;

the device comprises a servo gear, a slide block, a transmission meshing plate, a motor C, a transmission rack, a transmission.

Furthermore, the clamping station comprises a bottom plate, two clamping parts and an adjusting end, wherein the adjusting end is positioned at the upper end and the lower end of the bottom plate, the two ends of the clamping parts are erected on the adjusting end respectively, and adjusting bolts used for fixing the clamping parts and the adjusting end are arranged at the two ends of the clamping parts.

Further, the clamping part is a clamping plate, the opposite sides of the clamping plate are provided with soft pads, the clamping plate is used for clamping the PCB, and the stability and the levelness of the PCB after clamping can be guaranteed.

Furthermore, six clamping stations are annularly distributed on the turntable by taking the circle center as the center.

Furthermore, the guide rails are symmetrically distributed by taking the circle center of the turntable as the center, so that the positions of the product hole sites relative to the probe boxes above the hole sites are the same when the turntable rotates once.

The utility model has the advantages that: the scheme utilizes the disc as the rotary table, and the rotary table is symmetrically provided with a plurality of stations, so that the rotary table rotates every time and then the position of a target product on the station is the same relative to the position of the probe box, the target product is detected in batches by utilizing, the position of each product is not adjusted at one time according to different hole positions, and the time is saved, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the holding station of the present invention;

fig. 3 is a top view of the probe case of the present invention;

figure 4 is a side view of the probe case of the present invention.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

As shown in fig. 1, the low resistance device for testing products comprises a dust-free box 1, a turntable 2, a control panel 3, an upper computer 4 and a probe box 8, wherein the turntable 2 is installed in the dust-free box 1 and driven by a motor a, and a sealing cover (not shown in fig. 1) is arranged on the dust-free box 1. The turntable 2 is annularly provided with a plurality of clamping stations 5 by taking the circle center as the center, six clamping stations 5 are designed in the embodiment, the included angle between every two adjacent clamping stations 5 is 60 degrees, and the clamping stations 5 are used for clamping a target product to be subjected to low resistance testing.

As shown in fig. 2, the clamping station 5 comprises a bottom plate 51, two clamping portions 52 and an adjusting end 53, wherein the adjusting end 53 is located at the upper end and the lower end of the bottom plate 51, a groove is formed in the middle of the adjusting end 53, two ends of the clamping portion 52 are respectively erected on the adjusting end 53, that is, two ends of the clamping portion 52 are located in the groove. And can follow the fluting in round trip movement, adjust the relative interval between two clamping parts 52 in order to be used for the not unidimensional PCB board of centre gripping, wherein clamping part 52 both ends are provided with the adjusting bolt 54 that is used for fixed clamping part 52 and regulation end 53, fix through adjusting bolt 5 after the centre gripping is accomplished, clamping part 52 is the splint, and the opposite side of splint is provided with the cushion.

At least two guide rails 6 are arranged above the turntable 2, the two ends of each guide rail 6 are fixed on the side wall of the dust-free box 1, the guide rails 6 are symmetrically distributed by taking the circle center of the turntable 2 as the center, two guide rails 6 are designed in the embodiment, three guide rails, four guide rails and the like can be arranged in addition, the more guide rails are arranged, the higher the cost is, the more the number of the required probe boxes 8 is, and the more the data processing of the upper computer 4 is. In order to facilitate the low resistance test of hole sites, the guide rails 6 are located right above different clamping stations 5, the guide rails 6 are provided with screw rods 7, each guide rail 6 is provided with at least two probe boxes 8, the probe boxes 8 are erected on the screw rods 7, and the screw rods 7 are controlled by a motor B to rotate so as to realize the back and forth movement of the probe boxes 8.

As shown in fig. 3 and 4, the probe box 8 is composed of a box body 81, a driving wheel 82, a following gear 83, a transmission meshing plate 84, a slide block 85, a probe 86 and a slide groove 87; the box body 81 is engaged with the screw rod 7, the motor C is arranged in the box body 81, one side of a rotating shaft of the motor C, which extends out of the box body 81, is connected with a driving wheel 82, a follow-up gear 83 is arranged below the driving wheel 82, and the driving wheel 82 and the follow-up gear 83 are driven by a motor; one side of the follow-up gear 83 is provided with an installation sliding groove 87, the sliding block 85 is erected on the sliding groove 87, the bottom of the sliding block 85 is provided with a probe 86, the side surface of the sliding block 85 is provided with a transmission meshing plate 84, the transmission meshing plate 84 is meshed with the follow-up gear 83, and the motor C rotates to realize the up-and-down lifting of the probe 86 so as to complete the detection of the low resistance of the hole site.

Above very mechanical structure overall arrangement of this scheme, in order to realize its automated inspection, this scheme still includes an upper computer 4, and upper computer 4 is used for accomplishing the control of whole detection flow.

The control strategy is that the motion track of the probe box 8 and the rotation frequency of the motor A, namely how long the motor A rotates once, are set according to the hole site distribution of the target product, the time design must meet the hole site detection time, in the embodiment, the motor A is designed to be 2S, and the number of the clamping stations 5 on the turntable 2 is six, so the rotation central angle of the motor A is 60 degrees, and the movement of the motor B and the control of the motor C are determined by the hole site data of the target product.

In addition, the present embodiment improves two detection modes.

In the first mode, the probe box 8 is positioned above different hole sites of different target products;

in the second mode, the probe box 8 is located above the same hole site of different target products.

The scheme provides two working modes, and low resistance detection is carried out on the same hole site of different products at the same time, or detection is carried out on different hole sites of different target products at the same time.

The foregoing is merely a preferred embodiment of the invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to limit the invention to other embodiments, and to various other combinations, modifications, and environments and may be modified within the scope of the inventive concept as described herein by the teachings or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The low-resistance device for the test product is characterized by comprising a dust-free box (1), a rotary table (2), a control panel (3), an upper computer (4) and a probe box (8), wherein the rotary table (2) is installed in the dust-free box (1) and driven by a motor A, a plurality of clamping stations (5) are annularly distributed on the rotary table (2) by taking the circle center as the center, and the clamping stations (5) are used for clamping a target product to be subjected to low-resistance test;

at least two guide rails (6) are arranged above the turntable (2), the guide rails (6) are positioned right above different clamping stations (5), a lead screw (7) is installed on each guide rail (6), at least two probe boxes (8) are installed on each guide rail (6), the probe boxes (8) are erected on the lead screw (7), and the lead screw (7) is controlled by a motor B to rotate to realize the back-and-forth movement of the probe boxes (8);

and the upper computer (4) completes the control of the whole detection process.

2. The low resistance equipment of a test product according to claim 1, wherein in the low resistance detection state, the probe box (8) is positioned above different hole sites of different target products;

or the probe boxes (8) are positioned above the same hole site of different target products.

3. The low resistance device of the test product according to claim 2, wherein the probe box (8) is composed of a box body (81), a driving wheel (82), a following gear (83), a transmission meshing plate (84), a sliding block (85), a probe (86) and a sliding chute (87);

the box body (81) is meshed with the screw rod (7), the motor C is arranged in the box body (81), the rotating shaft of the motor C extends out of one side of the box body (81) and is connected with the driving wheel (82), the following gear (83) is arranged below the driving wheel (82), and the driving wheel (82) and the following gear (83) are driven by the motor;

the detection device is characterized in that an installation sliding groove (87) is formed in one side of the follow-up gear (83), the sliding block (85) is erected on the sliding groove (87), a probe (86) is installed at the bottom of the sliding block (85), a transmission meshing plate (84) is installed on the side face of the sliding block (85), the transmission meshing plate (84) is meshed with the follow-up gear (83), and the motor C rotates to realize the up-and-down lifting of the probe (86) so as to complete hole site low resistance detection.

4. The low-resistance device for the test product according to claim 1, wherein the clamping station (5) is composed of a bottom plate (51), two clamping portions (52) and an adjusting end (53), the adjusting end (53) is located at the upper end and the lower end of the bottom plate (51), two ends of the clamping portion (52) are respectively erected on the adjusting end (53), and adjusting bolts (54) used for fixing the clamping portion (52) and the adjusting end (53) are arranged at two ends of the clamping portion (52).

5. The low resistance test apparatus for test products of claim 4, wherein said clamping portion (52) is a clamping plate with soft pads on opposite sides of the clamping plate.

6. The low resistance device for the test product according to claim 5, wherein the turntable (2) is annularly provided with six clamping stations (5) by taking the circle center as the center.

7. The low resistance device for the test product according to claim 6, wherein the guide rails (6) are symmetrically distributed by taking the circle center of the turntable (2) as the center.