CN201364343Y

CN201364343Y - PCB flattener for PCB tester

Info

Publication number: CN201364343Y
Application number: CNU2008201759495U
Authority: CN
Inventors: 武勇; 胡泉金; 潘海; 杨朝辉
Original assignee: SHENZHEN MASON ELECTRONICS CO Ltd
Current assignee: SHENZHEN MASON ELECTRONICS CO Ltd
Priority date: 2008-12-02
Filing date: 2008-12-02
Publication date: 2009-12-16
Anticipated expiration: 2018-12-02

Abstract

The utility model relates to a PCB flattener for a PCB tester, which comprises a main body-supporting frame; wherein, two parallel horizontal alignment jigs which can slide on the frame are arranged on the frame; through nuts, the alignment jigs are linked with a clamping mechanism which is used to clamp the edges of a PCB board; the clamping mechanism consists of a base and jaws; both ends of the claws are provided with rotary shafts which are sleeved in the corresponding shaft sleeves of the base; and hinge mechanisms which control the clamping and releasing of the claws are arranged on the rotary shafts of the claws. Consequently, PCBs to be tested can be better contacted with a testing steel needle, so that the false testing rate and PAD impressions and scratches, which are caused by contact, can be reduced. Problems such as tip and rejection, which are caused by contact, are reduced, and moreover, the flattener has the advantages of simple overall structure, low cost, short fabrication period and convenient replacement, can be widely applied to most of the current types of PCB boards and increases the one-time pass rate of testing.

Description

PCB test machine PCB flattening device

[technical field]

The utility model relates to a kind of printed circuit board (PCB) (Printed Circuit Board; PCB) testing apparatus refers in particular to the device that being used on a kind of PCB test machine flattens PCB to be tested.

[background technology]

In PCB test industry, now the integrated level of circuit board is more and more higher, and solder joint is more and more littler, and density is close more, and in order to adapt to the consumer electronics market demand, a lot of PCB make soft board, Rigid Flex, hardboard etc.And in order to adapt to the frivolous small and exquisite characteristics of consumer electronics, the profile that PCB generally does is very little, and thickness of slab is very thin, density is very high.So owing to be soft board, Rigid Flex, and very thin hardboard when occurring PCB unavoidably the test time and cause PCB because of reasons such as distortion, folds in test discontinuity, inclination etc. finally cause PAD to be tested and test between the draw point deviation occurring.Therefore the test machine needleless means that to the device of this type of issue-resolution PCB producer reduces greatly owing to other reasons causes the percent of pass of PCB, increases the high fraction defective that therefore brings and the cost that causes simultaneously in the time of test at present.Mean also simultaneously that therefore enterprise loses suitable profit, even cause enterprise in the spring tide of the market of cut-throat competition, to be defeated.And test machine equipment manufacturers should consider for the client to greatest extent, help the client to reduce the problem that the high scrappage, the height that bring because of the test result distortion turn over survey rate, high maintenance rate.What generally adopt at present is to paste red gummed paper on PCB contraposition PIN, utilizing gummed paper is the other one side that pulls to off normal with PCB people, but its efficient and result are not good enough usually, can't satisfy the demand of ordinary production, yet in the industry again needleless this problem is proposed solution preferably, so how to fall so the high fraction defective that brings and improve the inaccurate and discontinuity of contraposition in this type of PCB test process and become and be badly in need of the matter of utmost importance that solves in the industry.

[summary of the invention]

The purpose of this utility model is to have overcome above-mentioned defective, provides a kind of and can effectively solve soft board, Rigid Flex, the slim hardboard pcb board flattening device because of stressed imbalance problem in test.

The purpose of this utility model is achieved in that a kind of PCB test machine PCB flattening device, its improvements are: it comprises the body supports framework, stride in framework and to be provided with the two parallel, horizontal adjusting brackets that can slide thereon, adjusting bracket is useful on the clip mechanism at clip pcb board edge by its top nut interlock;

Described clip mechanism by pedestal and on catching form, the catching two ends are provided with rotating shaft and are socketed in the corresponding axle sleeve of pedestal, are provided with the linkage of its clip degree of tightness of interlock in the catching rotating shaft;

Described linkage is made up of convex interlock piece and topworks, and convex interlock piece wider portion is fixedly connected on the catching rotating shaft, the intrinsic topworks that is used to realize the hinge interlock in convex interlock piece narrower part top;

Described topworks is a cylinder;

Described catching is provided with the back-moving spring that links to each other with pedestal;

Offer the locating slot of corresponding adjusting bracket on the described support frame;

The clamping surface of described catching is provided with the flexible material layer that is used to prevent the pcb board scuffing;

Described body supports framework is provided with the pin of corresponding PCB test fixture.

The beneficial effects of the utility model have been to relate to the special-purpose flattening device of a kind of PCB test PCB to be measured have been flattened, but institutional adjustment of pcb board clip and clip pcb board to be measured that this device is all around regulated by level, thereby thereby guaranteeing that PCB to be tested can better contact with the test draw point reduces because of vacation survey rate that contact causes, reaches PAD impression, cut.Reduced because of contact former thereby cause turn over survey, problem such as scrap, and whole flattening device is simple in structure, and is with low cost, fabrication cycle is short, it is easy to change, can be applied to the fold flattening device of the PCB test usefulness of most types in the market.Thereby realized reducing pcb board manufacturer production cost, improved and once tested percent of pass.

[description of drawings]

Below in conjunction with accompanying drawing in detail concrete structure of the present utility model is described in detail

Fig. 1 is a structure vertical view of the present utility model.

Fig. 2 is an application structure synoptic diagram of the present utility model.

Fig. 3 is a structural perspective of the present utility model.

Fig. 4 is the structural representation of linkage in the utility model clip mechanism.

Fig. 5 is the principle schematic of linkage in the utility model clip mechanism.

[embodiment]

Below in conjunction with accompanying drawing the utility model specific embodiment is described in detail.

As Fig. 1-3, the utility model relates to a kind of PCB test machine PCB flattening device, and this device uses when cooperating test, and the transfer matic body of can arranging in pairs or groups is tested also automatically can carry out manual test.It comprises body supports framework 2, is provided with the pin of four location usefulness of corresponding PCB test fixture 1 in support frame 2 lower surfaces, referring to Fig. 2, waits in use this flattening device is inserted in the pilot hole of test fixture 1, plays preliminary positioning action; On support frame 2, then stride and be provided with the two parallel, horizontal adjusting brackets 4 that can slide thereon, four jiaos that regulate support 4 are equipped with fixed knob 202, corresponding two horizontal adjustment framves 4 offer locating slot 201 on it, also be provided with the scale 203 that is used to indicate dimension information simultaneously, horizontal adjustment support 4 can carry out front-back direction on framework 2 regulates, to regulate the pcb board that adapts to different in width.Be provided with leading screw in 4 of adjusting brackets, the socket linkage has the pcb board clip mechanism of embedding nut on the leading screw, this clip mechanism by pedestal 7 and on two groups of catchings that are arranged side by side 5 form, catching 5 is provided with the flexible material layer that is used to prevent the pcb board scuffing in the face that clamps pcb board, also be provided with the back-moving spring 8 that links to each other with pedestal 7 in addition in the catching 5, loosen thereby can automatically reset after making external force disappear.

Referring to Fig. 4, catching 5 is provided with rotating shaft 504 at its two ends, this rotating shaft 501 is socketed in the corresponding axle sleeve 403 in the pedestal 7, in catching 5 rotating shafts 504 interlocks convex interlock piece 505 is arranged, convex interlock piece 505 wider portion are fixedly connected on catching 5 rotating shafts 504, its narrower part is then pushed up the intrinsic topworks that is used to realize the hinge interlock, the topworks that is adopted in the present embodiment is the cylinder 6 of a vertical movement, be provided with T word top 601 with the top of cylinder 6, can control the chucking of two catchings 5 that are arranged side by side on the interlock adjusting bracket 4 simultaneously by using single cylinder 6 by this top, action of releasing.

Be illustrated in figure 5 as the principle schematic of linkage that the utility model uses, this hinge clamping mechanism mainly is to utilize that diametric(al) is maximum on the circumference, a bit move along circumferential both sides logical, its projector distance on vertical plane is less than the projector distance of horizontal diameter direction.Utilize this principle to realize the clamping of PCB, in actual application, the bending of PCB and the distance that can stretch are limited, so utilize this device can realize well that PCB to be tested flattens.And the strength that needs when flattening can regulate by the air pressure that enters cylinder, and the clamping surface of clamp device installs flexible material additional, and the PCB to be flattened with protection can not be scratched.

In sum, servicing unit when the utility model has related to the test of a kind of pcb board, this clamps pcb board limit to be tested, carry out reciprocal moving to guarantee that PCB fold to be tested can fully flatten by special device then, PCB can contact well with anchor clamps test draw point the stressed even while when testing to ensure.PCB test flattening device of the present utility model, clip mechanism by pcb board with adjusting bracket 4 on support frame 2 move forward and backward and clip mechanism cooperates the front and back of realizing to regulate with the feed screw nut of adjusting bracket 4, thereby realized linear the moving of X, Y direction of whole clamping device.The tensioning demand of the PCB that this apparatus structure is simple, the fabrication cycle weak point can satisfy various sizes.And can use for being fixed on the test fixture or on the automatic loading/unloading machine.Thereby realized test passes rate of raising pcb board, reduced the client because of turning over survey, judging the extra cost of bringing by accident.Thereby increased the competitive power of client in market.

Claims

1, a kind of PCB test machine PCB flattening device, it is characterized in that: it comprises the body supports framework, strides in framework and is provided with the two parallel, horizontal adjusting brackets that can slide thereon, adjusting bracket is useful on the clip mechanism at clip pcb board edge by its top nut interlock.

2, PCB test machine PCB flattening device as claimed in claim 1, it is characterized in that: described clip mechanism by pedestal and on catching form, the catching two ends are provided with rotating shaft and are socketed in the corresponding axle sleeve of pedestal, are provided with the linkage of its clip degree of tightness of interlock in the catching rotating shaft.

3, PCB test machine PCB flattening device as claimed in claim 2, it is characterized in that: described linkage is made up of convex interlock piece and topworks, convex interlock piece wider portion is fixedly connected on the catching rotating shaft, the intrinsic topworks that is used to realize the hinge interlock in convex interlock piece narrower part top.

4, PCB test machine PCB flattening device as claimed in claim 3, it is characterized in that: described topworks is a cylinder.

5, PCB test machine PCB flattening device as claimed in claim 3, it is characterized in that: described catching is provided with the back-moving spring that links to each other with pedestal.

6, PCB test machine PCB flattening device as claimed in claim 1 is characterized in that: the locating slot that offers corresponding adjusting bracket on the described support frame.

7, PCB test machine PCB flattening device as claimed in claim 2 is characterized in that: the clamping surface of described catching is provided with the flexible material layer that is used to prevent the pcb board scuffing.

8, PCB test machine PCB flattening device as claimed in claim 1, it is characterized in that: described body supports framework is provided with the pin of corresponding PCB test fixture.