CN109283454A

CN109283454A - Automatic PCB board electrical measuring machine

Info

Publication number: CN109283454A
Application number: CN201811314806.2A
Authority: CN
Inventors: 林咏华
Original assignee: Shenzhen Kaima Times Technology Co ltd
Current assignee: Shenzhen Kaima Times Technology Co ltd
Priority date: 2018-11-06
Filing date: 2018-11-06
Publication date: 2019-01-29
Anticipated expiration: 2038-11-06
Also published as: CN118937958A; CN109283454B

Abstract

The invention provides a full-automatic PCB electrical testing machine which comprises a testing unit, a feeding unit and a discharging unit, wherein the testing unit is used for testing whether a PCB is qualified or not and comprises a case, a controller, an upper testing group, a lower testing group and a lifting device, and the upper testing group and the lower testing group respectively comprise a CCD sensor, a fine adjustment device and a testing clamp. The full-automatic PCB electric tester provided by the invention has the advantages that the lower test group is arranged on the lifting device in a sliding manner, a plurality of areas of the PCB can be tested one by using one set of test fixture, the test efficiency is high, the test fixture of the lower test group comprises the fixed plate fixedly connected with the base of the fine adjustment device and the fixture plate connected with the fine adjustment plate, the probes are fixedly arranged in the multilayer fixture plate, and the PCB is fixed on the fixed plate, so that the whole fine adjustment can be carried out on all the fixture plates and the probes, the probes do not have the process of bending deformation, and the service life and the test yield of the probes are ensured.

Description

Full-automatic pcb board electric logging device

Technical field

The present invention relates to pcb board testing equipment field, in particular to a kind of full-automatic pcb board electric logging device.

Background technique

PCB (Printed Circuit Board), Chinese is printed circuit board, also known as printed circuit board, track Road plate, is important electronic component, is the supporter of electronic component, is the supplier of electronic component electrical connection, in PCB In the manufacturing process of plate, it is influence shipment product quality vital one that the test program of pcb board, which is highly important, Ring；

Test equipment in the prior art is all to be tested using fixed upper and lower test fixture pcb board, above and below It cannot be made a relative move between test fixture, pcb board biggish for number of test points can only just use more set test fixtures, point Region is tested one by one, so that testing efficiency is very low；

Wherein, one end of probe is used to be electrically connected with pcb board, and the other end is used to be electrically connected with test circuit module, In the prior art, the one end of probe close to test circuit module can be fixed by the first jig plate, and due to testing circuit Module is fixedly disposed on the stationary parts such as cabinet or substrate, therefore by the stationary parts such as the first jig plate and cabinet or substrate Being fixedly connected just can guarantee probe and the stable electric connection of test circuit module, while be leaned on by the fixed probe of the second jig plate One end of nearly pcb board, and the second jig plate is connect with micromatic setting, micromatic setting is by pulling the second jig plate to visit to adjust Needle, so that probe is aligned with the instrument connection on pcb board, and in long-term test use process middle probe meeting one way or another Bending deformation or even fatigue fracture, it is low so as to cause the high testing efficiency of machine-spoiled rate, it even results in non-defective unit pcb board and is accidentally surveyed The problem of for problem board.

Therefore need to provide a kind of full-automatic pcb board electric logging device to solve above-mentioned technical problem.

Summary of the invention

The present invention provides a kind of full-automatic pcb board electric logging device, by the way that lower test group is slidably arranged on lifting device, Simultaneously by test fixture be set as include the fixed plate being fixedly connected with the pedestal of micromatic setting and with the fine tuning of micromatic setting The jig plate of plate connection, when all jig plates and probe are integrally finely adjusted, the pcb board in fixed plate is remained stationary, to solve It cannot be made a relative move between the upper and lower test fixture of pcb board test equipment in the prior art, it is biggish for counting Pcb board can only just use more set test fixtures, and subregion is tested one by one, so that testing efficiency is very low, meanwhile, test clip Probe on tool cannot be adjusted according to deviation situation, or can only realize fine tuning by pulling probe, in long-term test The meeting one way or another bending deformation of use process middle probe head or even fatigue fracture, it is low so as to cause testing efficiency, or even lead Cause non-defective unit pcb board by the problem of accidentally survey is problem board.

In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of full-automatic pcb board electric logging device comprising:

Test cell, for carrying out qualified or not test to pcb board comprising cabinet, controller, upper test group, under The bottom in the cabinet is arranged in test group, lifting device, the lifting device, and the lower test group is slidably arranged in described On lifting device, the lifting device and the controller are electrically connected, for drive the lower test group to rise with it is described Upper test group cooperation carries out electrical testing to the two sides of pcb board, and the upper test group and the lower test group include CCD sensing Device, micromatic setting and test fixture, the ccd sensor, the micromatic setting are electrically connected with the controller, described Ccd sensor is arranged in the test fixture for carrying out positioning of taking pictures to the index point on pcb board, the test fixture by The micromatic setting drives fine tuning；

Feed unit, positioned at one end of the test cell, for transporting pcb board from position is placed to the test fixture On tested；

Discharging unit, positioned at the other end of the test cell, according to the PCB that will be completed whether passing through of test Plate is delivered on corresponding outfeed platforms.

In the present invention, the test fixture includes fixed plate, jig plate and probe, the fixed plate and the fixture Plate is flexibly connected, and the probe is fixed in jig plate described in multilayer and one end runs through the fixed plate and extends to outside, For being electrically connected pcb board and corresponding test circuit module；

The test circuit module, the jig plate are connect with the tuning plate of the micromatic setting, the fixed plate with The pedestal of the micromatic setting is fixedly connected, and is provided in the fixed plate of the lower test group for being supported to pcb board The positioning column of positioning, when pcb board is placed on the positioning column, the probe and pcb board are at a distance of set distance, so that institute State the position that the probe is adjusted in micromatic setting；

The ccd sensor limit setting is in the jig plate described in multilayer, take pictures end and the fixed plate of the ccd sensor Limit contact, the other end are provided in the fixed plate by elastic component and the jig plate Elastic Contact and hold phase with taking pictures It is corresponding to keep away a hole；

The pressing of the upper test group and lower test group so that the fixed plate to mobile close to the direction of the jig plate, So that the pcb board on the positioning column is connect with probe.

Further, the fixed plate is fixedly connected by connection component with the pedestal of the micromatic setting, the connection Component includes fixed link, sliding part, link block and spring；

One end of the fixed link is fixedly connected with the pedestal of the micromatic setting, and the other end is fixedly connected with end head, The side of the end head is provided with sliding slot, the sliding part is slidably connected with the sliding slot, glide direction and the lower survey The lifting direction of examination group is consistent, and the link block is fixedly connected on the sliding part, and the fixed plate and the link block are solid Fixed connection, one end of the spring are connect with the end head, and the other end is connect with the sliding part, for being the sliding part The initial position returned back on the sliding slot provides elastic pulling force.

In the present invention, the micromatic setting includes pedestal, the fine tuning module that the pedestal quadrangle is arranged in, is connected to institute It states the tuning plate in fine tuning module and the driving assembly for driving the fine tuning block motion, the pedestal is slidably connected at On the lifting device；

The fine tuning module includes:

First sliding block is slidably connected on the pedestal；

Second sliding block is slidably connected on the top surface of first sliding block, the glide direction of second sliding block with it is described The glide direction of first sliding block is vertical；

Sleeve member is fixed on the top surface of second sliding block；

Turntable part is rotatably connected in the sleeve member by two bearings, the extending direction of pivot center and the liter The lifting direction of falling unit is consistent, the extending direction of the pivot center, the glide direction of first sliding block and described The glide direction of two sliding blocks is orthogonal, one end of the turntable extended out at the top of the sleeve member it is external with corresponding institute State test fixture connection.

Further, it is provided with baffle at the both ends of the sleeve member, is arranged with sleeve member on the turntable part, The locating slot for the bearing to be arranged is provided on the inner wall of the sleeve member, it is sliding far from described second on the turntable part One end of block is provided with the shaft shoulder, and the shaft shoulder and the baffle are used to limit the outside of the bearing on one side, described fixed Position slot and the sleeve member for limiting the inside of the bearing on one side；

It is provided with sliding slot on the top surface of first sliding block, is removably provided with sliding rail on second sliding block Block, screw connects penetrating on one side for the sliding rail block from second sliding block and is fixedly connected with the sleeve member, when the sliding rail When block is fixedly connected with second sliding block, the sliding rail block is contacted with screw limit.

In the present invention, the side of the cabinet is provided with action pane, the both ends of the upper test group rotate respectively It is connected on the inner wall of the cabinet, is rotatably connected on the cabinet for driving the flexible of the upper test group rotation Bar, one end of the telescopic rod and the upper test group are rotatablely connected, the pivot center at the telescopic rod both ends and the upper survey The pivot center of examination group is parallel, the upper test group include in rotary motion trace the test position opposite with the lower test group and The installation position opposite with the action pane.

Further, torsional spring is connected between the upper test group and the cabinet inner wall, the torsional spring includes the first company End and second connection end are connect, the first connecting portion for connecting with first connecting pin is provided on the cabinet inner wall, It is provided in the upper test group for the second connecting portion with the second connection end；

When the upper test group is located at the test position, the center of gravity of the upper test group is located at the lower section of pivot center, The torsional spring is located at the first elastic position, when the upper test group is located at the installation position, the height of C.G. of the upper test group Height of C.G. when higher than positioned at the test position, the torsional spring are located at the second elastic position, and the torsional spring is located at first bullet Property position when elastic potential energy be greater than be located at it is described second elasticity when elastic potential energy.

In the present invention, the lifting device includes motor, transmission belt, belt wheel, first substrate, the second substrate, screw rod, spiral shell Parent part and lifter plate；

The first substrate and the second substrate are fixed in the cabinet, the first substrate and described second The plate face of substrate is parallel, and the first substrate is located at the lower section of the second substrate, and four screw rods are connected to described first Quadrangle between substrate and the second substrate, the both ends of the screw rod turn with the first substrate and the second substrate respectively One end of dynamic connection, the screw rod is fixedly connected through the first substrate and with the belt wheel, and the motor is fixed at On the first substrate, the shaft of the motor is connected by the belt wheel transmission on the transmission belt and four screw rods It connects；

The lifter plate is connect by the nut piece with the screw drive, and the pedestal of the micromatic setting slides setting On the lifter plate, it is provided with opening corresponding with the lower test group on the second substrate.

In the present invention, the feed unit includes positioning plate, flexible locating piece, charging manipulator and lifting unit, institute The top that charging manipulator is located at the lifting unit is stated, two pieces of positioning plates are located at the adjacent two sides of the lifting unit, The telescopic direction of two flexible locating pieces is correspondingly perpendicular to the plate face of two pieces of positioning plates, an institute wherein It states and is fixedly installed inductor on flexible locating piece, the flexible locating piece is according to the inductive signal of the inductor to positioned at institute It states the pcb board between flexible locating piece and the positioning plate and carries out extruding positioning, the lifting unit is according to the sense of the inductor Induction signal is risen.

Further, the feed unit further includes slide bar, and two pieces of positioning plates pass through the first connection frame and the cunning Bar is slidably connected, and the first fixing piece for fixing sliding position is provided on first connection frame, and two described flexible Locating piece is connect by the second connection frame with the sliding bar, is provided on second connection frame for fixed sliding position The second fixing piece set, by the distance between the first connection frame described in slidable adjustment and second connection frame to different rule The pcb board of lattice size carries out feeding；

The flexible locating piece is connect by connecting rod with second connection frame, is provided on second connection frame For connecting the first strip through slot of the connecting rod, it is provided in the connecting rod for connecting second connection frame The second strip through slot, bolt part passes through the first strip through slot and the second strip through slot and locks the connection Bar and the second support；

Described to feed mechanical hand include cupule head, strut and the parallel mobile jib of two extending directions, in a master It is connected with two struts on bar, one end of the every strut is provided with the cupule head, is arranged on the mobile jib There is the third strip through slot for connecting the strut, the 4th length for connecting the mobile jib is provided on the strut Bar shaped groove, bolt part passes through the third strip through slot and the 4th strip through slot locks the mobile jib and the branch Bar.

The present invention compared to the prior art, it has the advantage that: full-automatic pcb board electric logging device in the present invention by will under Test group is slidably arranged on lifting device, so as to only make a set of test fixture, then passes through the position of mobile lower test group It sets and eliminates the cumbersome procedure that more set test fixtures change tested one by one the multiple regions of CPB plate, testing efficiency It is high；

The both ends of upper test group are rotatably connected on the inner wall of cabinet respectively and by test groups in telescopic rod extension and contraction control Rotation, upper test group includes the test position opposite with lower test group and the installation opposite with action pane in rotary motion trace Position, is highly convenient for dismounting；

Wherein, the test fixture of lower test group includes fixed plate and the jig plate that connect with the tuning plate of micromatic setting, Probe is fixed in multilayer jig plate, and fixed plate is connected by the pedestal of connection component and micromatic setting, on connection component It is provided with sliding part, sliding part is connect with fixed link by spring so that fixed plate can elastic lifting；

When pcb board is fixed on the positioning column of fixed plate and probe is at a distance of set distance, so as to all jig plates And probe is finely adjusted, and fixed plate and pcb board keep different, the process of bending deformation is not present in probe, to ensure that The service life and test yield of probe；

In addition, micromatic setting passes through setting sleeve member, and turntable part is rotatably connected in sleeve member by two bearings, Bearing is fixed by baffle and sleeve member, so that entirely fine tuning module is axially and radially being able to bear bigger load Lotus, stability are high.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below to required in embodiment Attached drawing to be used is briefly described, and the accompanying drawings in the following description is only the corresponding attached drawing of section Example of the invention.

Fig. 1 is the structural schematic diagram of the preferred embodiment of full-automatic pcb board electric logging device of the invention.

Fig. 2 is the structural schematic diagram of the test cell of full-automatic pcb board electric logging device of the invention.

Fig. 3 is the structural schematic diagram of the lower test group of full-automatic pcb board electric logging device of the invention.

Fig. 4 is that lower test group removes the structural schematic diagram after test fixture in Fig. 3.

Fig. 5 is the structural schematic diagram of the test fixture of full-automatic pcb board electric logging device of the invention.

Fig. 6 is the structural schematic diagram of the connection component of full-automatic pcb board electric logging device of the invention.

Fig. 7 is the structural schematic diagram of the micromatic setting of full-automatic pcb board electric logging device of the invention.

Fig. 8 is the structural schematic diagram of the fine tuning module of full-automatic pcb board electric logging device of the invention.

Fig. 9 is the structural schematic diagram of the magnetic railings ruler component of full-automatic pcb board electric logging device of the invention.

Figure 10 is the structural schematic diagram of the feed unit of full-automatic pcb board electric logging device of the invention.

Figure 11 is the structural schematic diagram of the charging manipulator of full-automatic pcb board electric logging device of the invention.

Figure 12 bows for the positioning plate of full-automatic pcb board electric logging device of the invention, flexible locating piece, slide bar and lifting unit View.

Figure 13 is the structural schematic diagram of the discharging unit of full-automatic pcb board electric logging device of the invention.

Figure 14 is the torsional spring of full-automatic pcb board electric logging device of the invention and the attachment structure schematic diagram of cabinet.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those skilled in the art's every other implementation obtained without making creative work Example, shall fall within the protection scope of the present invention.

Test equipment in the prior art is all to be tested using fixed upper and lower test fixture pcb board, above and below It cannot be made a relative move between test fixture, for counting, biggish pcb board can only just use more set test fixtures, subregion It is tested one by one, so that testing efficiency is very low, in addition, the probe on test fixture cannot be adjusted according to deviation situation It is whole, or fine tuning can only be realized by pulling probe, it is curved in long-term test use process middle probe head meeting one way or another Song deformation or even fatigue fracture, it is low so as to cause testing efficiency, non-defective unit pcb board is even resulted in by the problem of accidentally survey is problem board.

It the following is a kind of preferred implementation of full-automatic pcb board electric logging device that can solve the above technical problem provided by the invention Example.

Fig. 1 and Figure 13 are please referred to, wherein Fig. 1 is the structure of the preferred embodiment of full-automatic pcb board electric logging device of the invention Schematic diagram, Figure 13 are the structural schematic diagram of the discharging unit of full-automatic pcb board electric logging device of the invention.

The similar unit of structure is to be given the same reference numerals in the figure.

The preferred embodiment of full-automatic pcb board electric logging device provided by the invention are as follows: a kind of full-automatic pcb board electric logging device, Including feed unit 11, test cell 12 and discharging unit 13；

Feed unit 11 is located at one end of test cell 12, for being transported pcb board crawl extremely by charging manipulator 63 It is tested in test cell 12；

Discharging unit 13 is located at the other end of test cell 12, according to test whether passing through, uses discharging manipulator 131 are delivered to the pcb board being completed on corresponding outfeed platforms, and outfeed platforms here include qualified products placement platform 132, product placement platform 133 of opening a way and short-circuit product placement platform 134, wherein being asked since the quantity of qualified products is much larger than The quantity of product is inscribed, therefore the setting position of qualified products placement platform 132 may be provided at one end closer to test cell 12, from And can be shortened the moving distance of discharging manipulator 131, it is energy saving.

Referring to figure 2., Fig. 3 and Fig. 5, wherein Fig. 2 is the knot of the test cell of full-automatic pcb board electric logging device of the invention Structure schematic diagram, Fig. 3 are the structural schematic diagram of the lower test group of full-automatic pcb board electric logging device of the invention, and Fig. 5 is of the invention complete The structural schematic diagram of the test fixture of automatic pcb board electric logging device.

Narration explanation is carried out to test cell 12 as follows；

Test cell 12 includes cabinet 21, controller, upper test group 23, lower test group 24 and lifting device, by going up and down Device drives lower test group 24 to rise to carry out electrical testing with two sides of upper test group 23 cooperation to pcb board 35；

Specifically, being respectively arranged with charging window and discharging window in the opposite two sides of cabinet 21, it is being located at charging window Side between discharging window is provided with action pane, and the product in feed unit 11 enters test cell through feeding window 12, the window that discharged of the product after testing on test cell 12 is delivered on discharging unit 13, and action pane is for equipment Installation and the observation of test process；

It wherein can refer to the visual angle orientation in Fig. 1, the orientation of the test cell in Fig. 2 is left view direction in Fig. 1, and Fig. 2 In eliminate the side plate of cabinet to show cabinet inside structure, the left side of cabinet in Fig. 1 is arranged in charging window, i.e., close to charging The right side of cabinet in Fig. 1 is arranged in the side of unit 11, discharging window, i.e. the side close to discharging unit 13, action pane is set Set the front of the cabinet in Fig. 1；

Controller is connected to the outside of cabinet 21；

The bottom in cabinet 21 is arranged in lifting device, is electrically connected with controller, sets in the top surface two sides of lifting device It is equipped with sliding rail, driving device 2F is provided between the sliding rail of two sides；

Lower 24 two sides of the bottom of test group are slidably connected on corresponding sliding rail, and are connect with driving device 2F to be slided Driving force, tested one by one by the position of mobile lower test group 24 come the multiple regions to CPB plate, eliminate more sets and survey The cumbersome procedure that examination fixture changes, testing efficiency are high；

The both ends of upper test group 23 are rotatably connected on respectively on the inner wall of cabinet 21, are rotatably connected to and are used on cabinet 21 The telescopic rod 22 that test group 23 rotates in driving, one end of telescopic rod 22 and upper test group 23 are rotatablely connected, 22 both ends of telescopic rod Pivot center it is parallel with the pivot center of upper test group 23, upper test group 23 includes and lower 24 phase of test group in rotary motion trace Pair test position and the installation position opposite with action pane, when upper test group 23 turn to test position when, lower test group 24 can Pcb board rising is carried, so that upper test group 23 and the close pressing of lower test group 24, and then the two sides of pcb board is surveyed respectively Examination, when upper test group 23 turns to installation position, is highly convenient for the dismounting of its component；

Upper test group 23 and lower test group 24 in the present invention include ccd sensor 3C, micromatic setting and test clip Tool, ccd sensor 3C, micromatic setting with controller be electrically connected, ccd sensor 3C be arranged in test fixture for pair Index point on pcb board 35 is taken pictures, and according to information of taking pictures, micromatic setting can drive test fixture to be finely adjusted positioning；

Preferably, the both ends in test fixture are provided with ccd sensor 3C, carry out to two index points of pcb board 35 It takes pictures positioning, reasonable quantity and the precision for guaranteeing positioning enough.

In addition, being provided with universal wheel 26 and fixed feet 25 in the bottom of cabinet 21, fixed feet 25 is threaded in cabinet 21 bottom to adjust the bearing height of fixed feet 25 by screwing, so as to by contact of the control universal wheel 26 with ground and It is no, to carry out mobile or fixed in position to cabinet 21.

Incorporated by reference to Fig. 2 and Figure 14, wherein Figure 14 is the connection of the torsional spring and cabinet of full-automatic pcb board electric logging device of the invention Structural schematic diagram.

Narration explanation is carried out to upper test group 23 and the connection of cabinet 21 as follows；

It is connected with torsional spring 73 between 21 inner wall of upper test group 23 and cabinet, support plate 71 is fixedly installed on inner wall, Rotating member 72 is connected in support plate 71, rotating member here can be the sub-assembly of shaft or shaft and bearing；

Torsional spring 73 includes the first connecting pin 731 and second connection end 732, and torsional spring 73 can be arranged in the company of upper test group 23 Between fishplate bar 231 and the inner wall of cabinet 21, first for connecting with the first connecting pin 731 is arranged on the inner wall of cabinet 21 and connects Socket part is provided with for the second connecting portion with second connection end 732 on connecting plate 231；

Optionally, torsional spring 73 can also be arranged between connecting plate 231 and support plate 71, the setting of first connecting portion 74 is existed In support plate 71, second connecting portion is arranged on connecting plate 231；

Connecting plate 231 in upper test group 23 can be located by connecting between support plate 71 and the inner wall of cabinet 21, then It is connect with first connecting portion 74 and second connecting portion by the first connecting pin 731 of torsional spring 73 and second connection end 732 are corresponding, it Rotating member 72 is run through again afterwards and is inserted and fixed；

When upper test group 23 is located at test position, the center of gravity of upper test group 23 is located at the lower section of pivot center, and torsional spring 73 In the first elastic position, when upper test group 23 is located at installation position, the height of C.G. of upper test group 23 is higher than when being located at test position Height of C.G., torsional spring 73 are located at the second elastic position, and elastic potential energy when torsional spring 73 is located at the first elasticity, which is greater than, is located at the second bullet Elastic potential energy when property position；

In the case where not set torsional spring 73, upper test group 23 is maintained at test position under the effect of gravity, and telescopic rod 22 exists Test group 23 needs to overcome the larger gravity of upper test group 23 in driving during turning to installation position by test position, will lead to The serious wear of telescopic rod 22, and the setting of torsional spring 73 can offset test group 23 in gravity, to mitigate telescopic rod 22 Driving resistance, prolong its service life, operational reliability is higher；

In addition, it is necessary to which explanation, can be arranged positioning link between upper test group 23 and cabinet 21, so that upper test When group reaches test position or installation position, it can keep in the position, being conducive to subsequent test job or disassembly by positioning link Work.

Referring to figure 3., Fig. 4 and Fig. 5, wherein Fig. 4 is that lower test group removes the structural schematic diagram after test fixture in Fig. 3；

Narration explanation is carried out to lower test group as follows；

In the present invention, the pcb board 35 in fixed plate 36 by probe 3B and test circuit module 39 be electrically connected with into Row test；

Wherein, it is provided with fixed frame 3A on the tuning plate of micromatic setting 33, the middle part of tuning plate 33 and fixed frame 3A are equal It is provided with through hole, holding tank is provided on fixed frame 3A, 39 one end of test circuit module is provided with link block 391, surveys Examination circuit module 39 is located in the through hole of tuning plate 33 and fixed frame 3A, and link block 391 is fixed in holding tank, Structurally reasonable, space utilization rate is high；

Optionally, according to the actual situation, can also on pedestal 31 through hole with to test circuit module 39 formation keep away position；

Test fixture is fixedly connected on fixed frame 3A by intermediate plate 3A1, be provided on intermediate plate 3A1 through hole with Electric connection for probe 3B and test circuit module 39 provides space；

In this way, test circuit module 39 and test fixture can be simultaneously with tuning plates 33 when tuning plate 33 drives and finely tunes It adjusts and moves, test circuit module 39 is consistent with the mobile adjusting of test fixture, so that whole in jig plate 37 and probe 3B In mobile adjustment process, the probe 3B on test circuit module 39 and test fixture is able to maintain stable electric connection.

Specifically, test fixture includes fixed plate 36, jig plate 37 and probe 3B, jig plate 37 is micro- with micromatic setting Tuned plate 33 connects, and fixed plate 36 is fixedly connected with the pedestal 31 of micromatic setting, is provided in the fixed plate 36 of lower test group 24 For being supported the positioning column 361 of positioning to pcb board 35, positioning corresponding with positioning column 361 is provided on pcb board Hole；

Fixed plate 36 in the present embodiment is connect with jig plate 37 by connecting column, wherein can make multilayer jig plate 37 and connect It connects column to be fixedly connected, fixed plate 36 is flexibly connected with connecting column, and flexible connection here refers to when fixed plate 36 is fixed, fixture The composite entity of plate 37 and connecting column can be moved along the axially and radially direction of connecting column, be axially moveable so that probe 3B with The distance between pcb board in fixed plate 36 is adjustable, moves radially, so that between the pcb board on probe 3B and fixed plate 36 Relative position it is adjustable, to carry out contraposition adjusting；

Probe 3B is fixed in multilayer jig plate 37 and one end runs through fixed plate 36 and extends to outside, for electrically connecting Pcb board 35 and corresponding test circuit module are connect, when alignment jig plate 37, probe 3B is conditioned with jig plate 37, and Fixed plate 36 can then remain stationary, i.e., it is motionless can to fix pcb board for fixed plate 36, by micromatic setting alignment jig plate 37 and fixture Probe 3B in plate 37 is mobile, and to align with the pcb board in fixed plate 36, probe 3B is moved together with jig plate 37, so that visiting Needle 3B will not bending deformation；

When pcb board 35 is placed on positioning column 361, probe 3B and pcb board 35 are adjusted visit at this time at a distance of set distance The position of needle 3B with pcb board 35 to be aligned；

Wherein, lower test group 24, which is pushed to rise by lifting device, forms pressing with upper test group 23, presses so that fixed plate 36 push, so that the pcb board 35 and probe 3B on positioning column 361 are electrically connected；

It should be noted that the connection knot of micromatic setting, test fixture and test circuit module in upper test group 23 Structure and lower test group 24 are consistent, are again provided with fixed plate and positioning column on the test fixture of upper test group 23；

Press test process are as follows: lower test group 24 first carries pcb board and rises the positioning so that in pcb board and upper test group 23 Column positioning contact, at this time the two sides of pcb board it is corresponding with upper and lower test group on probe at a distance of set distance, at this time on Ccd sensor in test group 23 and lower test group 24 can take pictures to index point corresponding on pcb board；

Then the micromatic setting in upper and lower test group according to information of taking pictures it is corresponding adjust respective probe with pcb board pair Position further rises pressing using lower test group 24 later, so that the fixed plate in upper and lower test group is respectively to close to each It is mobile from the direction of jig plate, so that the corresponding probe electrical property grafting in upper and lower test group in the two sides of pcb board Carry out electrical testing；

Wherein, the fixed plate in lower test group 24 receives PCB up to fixed plate 36 to the direction close to jig plate 37 In mobile process, the ccd sensor in lower test group 24 can carry out positioning of taking pictures to index point.

Optionally, fixed plate and positioning column can also be not provided on the test fixture of upper test group 23；

Press test process are as follows: when lower test group 24 rises to upper test group 23 at a distance of set distance, upper test group Ccd sensor on 23 can take pictures to the index point on pcb board top surface, then the micromatic setting tune in upper test group 23 Probe is saved to align with pcb board, further rises pressing using lower test group 24 later, so that the spy in upper test group 23 Needle directly with pcb board electrical property grafting, probe in lower test group 24 after fixed plate is pressed down again with pcb board electrical property grafting.

In the present embodiment, ccd sensor 3C limit is arranged in multilayer jig plate 37, the end of taking pictures of ccd sensor 3C It is contacted with a fixed plate 36 limit, the other end is made under fixed plate 36 by elastic component and 37 Elastic Contact of jig plate, elastic component The connection with ccd sensor is not influenced when pressure, is provided in fixed plate 36 and corresponding keeps away a hole with taking pictures to hold.

Referring to figure 3. and Fig. 6, Fig. 6 be full-automatic pcb board electric logging device of the invention connection component structural schematic diagram；

As follows to specifically connection carries out narration explanation between the pedestal 31 of fixed plate 36 and micromatic setting；

Fixed plate 36 in the present embodiment is fixedly connected by connection component 38 with the pedestal 31 of micromatic setting, connection component 38 include fixed link 381, sliding part 383, link block 384 and spring 385；

Specifically, one end of fixed link 381 is fixedly connected with the pedestal 31 of micromatic setting, the other end is fixedly connected with end Fixed link 381, pedestal 31 and outline border are carried out more stable company wherein outline border can also be fixedly installed on pedestal 31 by portion 382 It connects；

The side of end head 382 is provided with sliding slot, sliding part 383 is slidably connected with sliding slot, glide direction and lower test The lifting direction of group 24 is consistent, and link block 384 is fixedly connected on sliding part 383, fixed plate 36 and the fixed company of link block 384 It connects, one end of spring 385 is connect with end head 382, and the other end is connect with sliding part 383；

In the bonding processes of upper test group 23 and lower test group 24, fixed plate 36 can be oppressed to close to jig plate 37 Direction is mobile, and the elastic pulling force of spring 385 is gradually increased in moving process, and fixed plate 36 pushes so that pcb board 35 and probe 3B It is electrically connected after completing test, the initial position that spring 385 can return back on sliding slot for sliding part 383 provides elastic pulling force, i.e., Elastic force makes fixed plate 36 return back to initial position to the direction far from jig plate 37；

In the present embodiment, the both ends of fixed plate 36 pass through one group of connection component 38 and are fixedly connected with pedestal 31, and one group Connection component 38 includes two fixed links 381, and end head 382 is fixedly connected by screw with fixed link 381.

The connection lug for connecting with sliding part 383 is provided on link block 384, two connection lugs are connected to The two sides of sliding part 383, are provided with link slot corresponding with sliding part 383 on the inside of connection lug, and screw passes through connection Lug and sliding part 383 form a fixed connection.

It should be noted that mutually isostructural connection component and micromatic setting can be used in the fixed plate in upper test group 23 Pedestal is fixedly connected.

Fig. 7 and Fig. 8 are please referred to, wherein Fig. 7 is the structural representation of the micromatic setting of full-automatic pcb board electric logging device of the invention Figure, Fig. 8 are the structural schematic diagram of the fine tuning module of full-automatic pcb board electric logging device of the invention.

Narration explanation is carried out to micromatic setting as follows；

In the present invention, micromatic setting includes pedestal 31,31 4 jiaos of pedestal of fine tuning module 32 is arranged in, is connected to fine tuning Tuning plate 33 in module 32, the driving assembly 34 for driving fine tuning module 32 to move and module is finely tuned for corresponding measurement The magnetic railings ruler component 341 of 32 displacement, pedestal 31 are slidably connected on lifting device；

Wherein, fine tuning module 32 includes the first sliding block 41, the second sliding block 42, sleeve member 44 and turntable part 43；

First sliding block 41 is slidably connected on pedestal 31；

Second sliding block 42 is slidably connected on the top surface of the first sliding block 41, the glide direction and the first sliding block of the second sliding block 42 41 glide direction is vertical；

Sleeve member 44 is fixed on the top surface of the second sliding block 42；

Turntable part 43 is rotatably connected in sleeve member 44 by two bearings 48, and the extending direction of pivot center and lifting fill The lifting direction set is consistent, the sliding of the extending direction of pivot center, the glide direction of the first sliding block 41 and the second sliding block 42 Direction is orthogonal, and one end of turntable extends out to external to connect with corresponding test fixture at the top of sleeve member 44.

Turntable part 43 is rotatably connected in sleeve member 44 by two bearings 48, by baffle 47 and sleeve member 46 to axis It holds 48 to be fixed, so that entirely fine tuning module 32 is axially and radially being able to bear bigger load, stability is high.

Preferably, bearing 48 is angular contact ball bearing.

In the present embodiment, tuning plate 33 is fixedly connected with four turntable parts 43 of quadrangle, is set at the top of turntable part 43 It is equipped with the connecting hole for connecting with tuning plate 33；

Specifically, being provided with baffle 47 at the both ends of sleeve member 44, it is arranged with sleeve member 46 on turntable part 43, is covering The locating slot for bearing 48 to be arranged is provided on the inner wall of cylinder part 44, one end on turntable part 43 far from the second sliding block 42 is set The shaft shoulder, the shaft shoulder and baffle 47 are equipped with for limiting on one side to the outside of bearing 48, locating slot and sleeve member 46 are used for axis 48 inside is held to be limited on one side；

It is provided with sliding slot on the top surface of the first sliding block 41, is removably provided with sliding rail block 45 on the second sliding block 42, Screw 49 is fixedly connected from penetrating on one side for 42 connecting sliding rail block 45 of the second sliding block with sleeve member 44, when sliding rail block 45 and second are slided When block 42 is fixedly connected, sliding rail block 45 is contacted with the limit of screw 49, is limited and is contacted to screw 49 by sliding rail block 45, can be well Guarantee sleeve member 44 is stably connected with the second sliding block 42, is not easy to loosen, simple and ingenious structure.

The micromatic setting includes the first driving of the first sliding block 41 transmission connection for finely tuning module 32 with corresponding one respectively Component 34, the second driving assembly 34 and third driving assembly 34, the driving direction of the second driving assembly 34 among Fig. 7 are X Direction, the first driving assembly 34 of two sides and the driving direction of third driving assembly 34 are Y-direction, and X-direction and Y-direction are hung down mutually Directly.

Fig. 9 is please referred to, wherein Fig. 9 is the structural schematic diagram of the magnetic railings ruler component of full-automatic pcb board electric logging device of the invention.

There are three magnetic railings ruler component 341, three magnetic railings ruler components 341 are respectively used to an a pair for fixed setting on pedestal 31 The displacement of first sliding block 41 of the first driving assembly of measurement, the second driving assembly and the connection of third driving assembly answered.

Wherein, magnetic railings ruler component 341 includes carrier base 51, ruler body 52, magnetic head, sliding connection block 55, mandril 53 and bullet Spring 54 is provided with block 56 at the both ends of carrier base 51；

Ruler body 52 is fixed on carrier base 51, and sliding connection block 55 is slidably arranged on carrier base 51,53 He of mandril Magnetic head is fixedly connected with sliding connection block 55, and magnetic head is contacted with ruler body 52；

The extending direction of mandril 53, the glide direction of sliding connection block 55 are consistent with the glide direction of the first sliding block 41, One end of mandril 53 is contacted with the first sliding block 41, and the other end of mandril 53 is socketed spring 54, and mandril 53, which runs through, is slidably connected at one On the block 56 at end, spring 54 is limited between sliding connection block 55 and the block 56 of the other end；

The magnetic railings ruler component 341 can make mandril 53 constantly contact with the first sliding block 41, constantly detect the first sliding block 41 Position, driving assembly can according to position feedback carry out drive control, so that whole system be made to constitute a closed-loop control system System, overall precision are higher

The driving assembly 34 is the common driving assembly of motor, lead screw and nut piece composition, the nut of driving assembly 34 Part is fixedly connected with the first sliding block 41.

Referring to figure 2., narration explanation is carried out to lifting device as follows；

Lifting device in the present invention includes motor 27, transmission belt 28, belt wheel 2A, first substrate 2B, the second substrate 2C, spiral shell Bar 2D, nut piece 2E and lifter plate 29；

First substrate 2B and the second substrate 2C are fixed in cabinet 21, the plate face of first substrate 2B and the second substrate 2C In parallel, first substrate 2B is located at the lower section of the second substrate 2C；

Four screw rod 2D are connected to the quadrangle between first substrate 2B and the second substrate 2C, the both ends difference of screw rod 2D It is rotatablely connected with first substrate 2B and the second substrate 2C, company is fixed through first substrate 2B and with belt wheel 2A in one end of screw rod 2D It connects, motor 27 is fixed on first substrate 2B, and the shaft of motor 27 passes through the belt wheel on transmission belt 28 and four screw rod 2D 2A transmission connection, lifter plate 29 are sequentially connected by nut piece 2E and screw rod 2D；

Here transmission belt 28 can be transmission belt with teeth, and belt wheel 2A be correspondence belt wheel with teeth, by the engagement of tooth come Guarantee the stability being driven between transmission belt 28 and belt wheel 2A；

Motor 27 can be sequentially connected with transmission belt 28 again after connecting speed reducer；

In addition, motor 27 drives the screw rod 2D of quadrangle to rotate synchronously by a transmission belt 28, and then guarantee lifter plate 29 Reliable and stable lifting.

The pedestal 31 of micromatic setting is slidably arranged on lifter plate 29, is provided on the second substrate 2C and lower test group 24 It is corresponding to be open to avoid the lifting of lower test group 24.

Figure 10, Figure 11 and Figure 12 are please referred to, wherein Figure 10 is the feed unit of full-automatic pcb board electric logging device of the invention Structural schematic diagram, Figure 11 be full-automatic pcb board electric logging device of the invention charging manipulator structural schematic diagram, Figure 12 be this The top view of the positioning plate of the full-automatic pcb board electric logging device of invention, flexible locating piece, slide bar and lifting unit.

Narration explanation is carried out to feed unit 11 as follows；

Feed unit 11 in the present invention includes positioning plate 61, flexible locating piece 62, charging manipulator 63 and lifting unit 64；

Charging manipulator 63 is located at the top of lifting unit 64, and two pieces of positioning plates 61 are located at adjacent two of lifting unit 64 Side, the telescopic direction of two flexible locating pieces 62 perpendicular to the plate face of two pieces of positioning plates 61, are stretched for one wherein correspondingly Inductor 69 is fixedly installed on contracting locating piece 62, the locating piece 62 that stretches is flexible fixed to being located at according to the inductive signal of inductor 69 Pcb board 35 between position part 62 and positioning plate 61 carries out extruding positioning, and lifting unit 64 is carried out according to the inductive signal of inductor 69 Rise；

Optionally, flexible block can be provided on flexible locating piece 62 to carry out flexible extruding, optional rubber to pcb board 35 Etc. materials；

In addition, feed unit 11 further includes slide bar 65, two pieces of positioning plates 61 are slided by the first connection frame 66 with slide bar 65 Connection, is provided with the first fixing piece for fixing sliding position, two flexible locating pieces 62 pass through on the first connection frame 66 Second connection frame 67 is slidably connected with slide bar 65, and second for fixing sliding position is provided on the second connection frame 67 and is fixed Part, by the distance between slidable adjustment the first connection frame 66 and the second connection frame 67 with the pcb board 35 to different specification size Carry out feeding；

Flexible locating piece 62 is connect by connecting rod 68 with the second connection frame, is provided on the second connection frame 67 for connecting First strip through slot of extension bar 68 in succession, is provided with the second strip for connecting the second connection frame 67 in connecting rod 68 Through slot；

Bolt part passes through the first strip through slot and the second strip through slot locking connecting rod 68 and second support, and first is long The setting of bar shaped groove and the second strip through slot is especially advantageous for the adjustable connection of connecting rod 68 and the second connection frame 67, so that working as When the specification variation of pcb board 35, the position of flexible locating piece 62 can also carry out corresponding change；

Feeding manipulator 63 includes cupule head 633, strut 632 and the parallel mobile jib 631 of two extending directions, at one It is connected with two struts 632 on mobile jib 631, one end of every strut 632 is provided with cupule head 633, is arranged on mobile jib 631 There is the third strip through slot for connecting strut 632, the 4th strip for connecting mobile jib 631 is provided on strut 632 Shape through slot；

Bolt part passes through third strip through slot and the 4th strip through slot locking mobile jib 631 and strut 632, third strip The setting of shape through slot and the 4th strip through slot is especially advantageous for the adjustable connection of strut 632 Yu mobile jib 631, when the rule of pcb board 35 When lattice change in size, the position of cupule head 633 can also carry out corresponding change.

The first strip through slot on second connection frame 67 and the second strip through slot in connecting rod 68 can refer to Figure 11 The adjustable connection structure of the 4th strip through slot on third strip through slot and strut 632 on middle mobile jib 631.

The working principle of the invention: the pcb board of stacking can be placed on the lifting unit 64 of feed unit 11, lifting unit 64 Pcb board rising is push, when inductor 69 senses PCB, lifting unit 64 stops rising, while two flexible locating pieces 62 extend It is contacted so that pcb board extruding to be pushed into position with positioning plate 61, feeds manipulator 63 later and grab the pcb board having good positioning and transport extremely In the fixed plate 36 of lower test group 24, by 361 location fit of positioning column on location hole on pcb board and fixed plate 36, at this point, Probe 3B and pcb board 35 are at a distance of set distance；

Wherein, since the size positions of test point, index point and location hole on all pcb boards are all consistent, therefore It can not need to be finely adjusted probe 3B under normal circumstances, only need motor 27 to run work, screw rod is driven by transmission belt 28 3D rotation, so that lifter plate 29 rises, lower test group 24 and upper test group 23 are pressed, so that probe 3B and pcb board are electrical Connection, test circuit module 39 carry out every test to pcb board；

Specific bonding processes are as follows: lower test group 24 first rises, and can make pcb board and upper test group 23 in uphill process first On positioning column position contact, then descend the further up meeting of test group 24 so that in upper test group 23 and lower test group 24 Fixed plate is mobile to the direction close to respective jig plate respectively, until the two sides of pcb board it is corresponding in upper and lower test group Probe electrical property grafting, during fixed plate is mobile, sliding part 383 and link block 384 are under the sliding slot in end head 382 Sliding, spring 385 is in elastic stretching state；

When test passes, lower test group 24 declines, and fixed plate is after losing pressure force, the elastic pulling force meeting of spring 385 So that fixed plate far from jig plate, so that probe 3B is separated with pcb board, then grabs pcb board fortune by discharging manipulator 131 It is defeated to be placed on qualified products placement platform 132；

When the pcb board of test has open circuit or short circuit problem, lower test group 24 declines, in the elastic pulling force of spring 385 It is sliding on sliding part 383 under effect, so that the fixed plate in upper and lower test group is respectively further from respective jig plate, while probe 3B It is separated with pcb board, fixed plate returns back to initial position；

Fixed plate in upper and lower test group returns back to initial position, and the positioning column in upper test group 23 and pcb board are still When positioning contact, lower test group 24 stops decline, and probe 3B and pcb board 35 are at a distance of set distance, ccd sensor and mark at this time Point is more conducive to ccd sensor and clearly takes pictures at a distance of set distance, set distance, then in upper test group 23 and lower test group 24 Ccd sensor take pictures respectively to respective flag point on pcb board；

Then can be by micromatic setting according to information control tuning plate 33 movement or the rotation of taking pictures, and then respectively drive corresponding Jig plate 37 and probe 3B carry out position adjustment integrally to be aligned with pcb board；

After the completion of contraposition, lifter plate 29 pushes lower test group 24 to rise, so that in upper test group 23 and lower test group 24 Fixed plate is mobile to the direction close to respective jig plate respectively, until the two sides of pcb board it is corresponding in upper and lower test group Probe electrical property grafting, so again to pcb board carry out electrical testing；

After being completed, lower test group 24 declines, and pressure force revocation, the elastic pulling force of spring 385 can make fixed plate return Again to initial position, the corresponding probe in upper and lower test group in the two sides of pcb board is separated；

Finally, discharging manipulator 131 grabs pcb board, and according to test result, crawl is mobile to be placed in qualified products placement In platform 132, open circuit product placement platform 133 or short-circuit product placement platform 134.

The process that the full-automatic pcb board electric logging device of this preferred embodiment tests pcb board is completed in this way.

The full-automatic pcb board electric logging device of this preferred embodiment by the way that lower test group is slidably arranged on lifting device, from And can only make a set of test fixture, then carried out one by one by the position of mobile lower test group come the multiple regions to CPB plate Test, eliminates the cumbersome procedure that more set test fixtures change, and testing efficiency is high；

In conclusion although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit The system present invention, those skilled in the art can make various changes and profit without departing from the spirit and scope of the present invention Decorations, therefore protection scope of the present invention subjects to the scope of the claims.

Claims

1. a fully automatic PCB board electric measuring machine, is characterized in that, comprises:

The test unit is used to test whether the PCB board is qualified or not. It includes a chassis, a controller, an upper test group, a lower test group, and a lifting device. The lifting device is arranged at the bottom of the chassis. The lower test The group is slidably arranged on the lifting device, the lifting device is electrically connected with the controller, and is used to drive the lower test group to rise to cooperate with the upper test group to conduct electrical tests on both sides of the PCB board, Both the upper test group and the lower test group include a CCD sensor, a fine-tuning device and a test fixture, the CCD sensor and the fine-tuning device are all electrically connected to the controller, and the CCD sensor is arranged on the test fixture. The fixture is used for photographing and positioning the marking points on the PCB, and the test fixture is driven by the fine-tuning device for fine-tuning;

A feeding unit, located at one end of the test unit, is used to transport the PCB board from the placement position to the test fixture for testing;

The discharging unit is located at the other end of the testing unit, which transports the tested PCB board to the corresponding discharging platform according to whether the test is passed or not.

2. The fully automatic PCB board electrical measuring machine according to claim 1, wherein the test fixture comprises a fixed plate, a fixture plate and a probe, the fixed plate is movably connected with the fixture plate, and the probe is flexibly connected. The needle is fixedly arranged in the multi-layered fixture board and one end extends through the fixed board to the outside for electrically connecting the PCB board and the corresponding test circuit module;

The test circuit module and the fixture board are all connected to the fine-tuning board of the fine-tuning device, the fixing board is fixedly connected to the base of the fine-tuning device, and the fixing board of the lower test group is provided with a The positioning column for supporting and positioning the PCB board, when the PCB board is placed on the positioning column, the probe is separated from the PCB board by a set distance, so that the fine adjustment device can adjust the position of the probe;

The CCD sensor is limited and arranged in the multi-layered fixture plate, the photographing end of the CCD sensor is in limited contact with the fixing plate, and the other end is in elastic contact with the fixture plate through an elastic member, and is arranged on the fixing plate There is an escape hole corresponding to the camera end;

The pressing of the upper test group and the lower test group causes the fixing plate to move in a direction close to the fixture plate, thereby connecting the PCB board on the positioning column with the probe.

3. The automatic PCB board electrical measuring machine according to claim 2, wherein the fixed plate is fixedly connected with the base of the fine-tuning device through a connecting assembly, and the connecting assembly comprises a fixed rod, a sliding member, connecting blocks and springs;

One end of the fixing rod is fixedly connected with the base of the fine adjustment device, and the other end is fixedly connected with an end head, and a sliding groove is provided on one side of the end head, and the sliding piece slides with the sliding groove The sliding direction is consistent with the lifting direction of the lower test group, the connecting block is fixedly connected to the sliding member, the fixing plate is fixedly connected to the connecting block, and one end of the spring is connected to the end head The other end is connected with the sliding member, so as to provide elastic tension for the sliding member to return to the initial position on the sliding groove.

4. The automatic PCB board electrical measuring machine according to claim 1, wherein the fine-tuning device comprises a base, a fine-tuning module arranged at four corners of the base, and a fine-tuning board connected to the fine-tuning module and a drive assembly for driving the movement of the fine-tuning module, the base is slidably connected to the lifting device;

The fine-tuning module includes:

a first slider, slidably connected to the base;

a second sliding block, slidably connected to the top surface of the first sliding block, and the sliding direction of the second sliding block is perpendicular to the sliding direction of the first sliding block;

a sleeve member, fixedly arranged on the top surface of the second sliding block;

The turntable member is rotatably connected in the sleeve member through two bearings, the extension direction of the rotation axis is consistent with the lifting direction of the lifting device, the extension direction of the rotation axis, the sliding direction of the first slider and The sliding directions of the second sliders are perpendicular to each other, and one end of the turntable extends from the top of the sleeve member to the outside to be connected with the corresponding test fixture.

5. The fully automatic PCB board electrical measuring machine according to claim 4, characterized in that, baffle plates are provided at both ends of the sleeve member, and shaft sets are sleeved on the turntable member, and The inner wall of the sleeve member is provided with a positioning groove for arranging the bearing, and the end of the turntable member away from the second sliding block is provided with a shaft shoulder, and the shaft shoulder and the baffle are used to align the bearing. The outer side of the bearing is used to limit the position, and the positioning groove and the shaft sleeve are used to limit the inner side of the bearing;

A sliding groove is provided on the top surface of the first sliding block, a sliding rail block is detachably provided on the second sliding block, and a screw passes through the side where the second sliding block is connected to the sliding rail block. When the sliding rail block is fixedly connected with the second sliding block, the sliding rail block is in limited contact with the screw.

6. The fully automatic PCB board electrical testing machine according to claim 1, characterized in that, an operation window is provided on one side of the chassis, and both ends of the upper test group are rotatably connected to the inner wall of the chassis. On the chassis, a telescopic rod for driving the rotation of the upper test group is rotatably connected, one end of the telescopic rod is rotatably connected with the upper test group, and the rotation axes of the two ends of the telescopic rod are connected with the upper test group. The rotation axes of the groups are parallel, and the upper test group includes a test position opposite to the lower test group and an installation position opposite to the operation window on the rotation track.

7. The automatic PCB board electrical testing machine according to claim 6, wherein a torsion spring is connected between the upper test group and the inner wall of the chassis, and the torsion spring comprises a first connection end and a second a connecting end, a first connecting part for connecting with the first connecting end is arranged on the inner wall of the case, and a second connecting part for connecting with the second connecting end is arranged on the upper test group;

When the upper test group is located at the test position, the center of gravity of the upper test group is located below the rotation axis, and the torsion spring is located at the first elastic position. When the upper test group is located at the installation position, all The height of the center of gravity of the above test group is higher than the height of the center of gravity when it is located at the test position, the torsion spring is located at the second elastic position, and the elastic potential energy of the torsion spring when it is located at the first elastic position is greater than that at the second elastic position. The elastic potential energy at the elastic position.

8. The fully automatic PCB board electrical measuring machine according to claim 1, wherein the lifting device comprises a motor, a transmission belt, a pulley, a first substrate, a second substrate, a screw, a nut and a lifting plate;

The first substrate and the second substrate are fixedly arranged in the chassis, the board surfaces of the first substrate and the second substrate are parallel, and the first substrate is located below the second substrate. Each screw is respectively connected to the four corners between the first base plate and the second base plate, the two ends of the screw rod are respectively connected in rotation with the first base plate and the second base plate, and one end of the screw rod penetrates through the the first base plate is fixedly connected with the pulley, the motor is fixedly arranged on the first base plate, and the rotating shaft of the motor is drive-connected with the pulleys on the four screws through the transmission belt;

The lifting plate is connected to the screw drive through the nut member, the base of the fine adjustment device is slidably arranged on the lifting plate, and the second base plate is provided with a corresponding lower test group. Open your mouth.

9 . The automatic PCB board electrical measuring machine according to claim 1 , wherein the feeding unit comprises a positioning plate, a telescopic positioning member, a feeding manipulator and a lifting part, and the feeding manipulator is located in the lifting and lowering part. 10 . Above the locating part, the two positioning plates are respectively located on the adjacent two sides of the lifting part, and the telescopic directions of the two telescopic positioning members are in a one-to-one correspondence perpendicular to the plate surfaces of the two positioning plates, in which A sensor is fixed on one of the telescopic positioning pieces, and the telescopic positioning piece squeezes and positions the PCB between the telescopic positioning piece and the positioning plate according to the sensing signal of the sensor. The elevating part ascends according to the induction signal of the sensor.

10 . The fully automatic PCB board electrical measuring machine according to claim 9 , wherein the feeding unit further comprises a sliding rod, and the two positioning plates are slidably connected to the sliding rod through a first connecting frame, 10 . A first fixing member for fixing the sliding position is provided on the first connecting frame, and the two telescopic positioning members are slidably connected to the sliding rod through a second connecting frame, and a useful function is provided on the second connecting frame The second fixing member at the fixed sliding position adjusts the distance between the first connecting frame and the second connecting frame by sliding to load PCB boards of different sizes;

The telescopic positioning member is connected with the second connecting frame through a connecting rod, the second connecting frame is provided with a first elongated through groove for connecting the connecting rod, and the connecting rod is provided with a useful In connection with the second elongated through slot of the second connecting frame, the bolt member passes through the first elongated through slot and the second elongated through slot to lock the connecting rod and the first through slot. two brackets;

The feeding manipulator includes a suction cup head, a support rod and two main rods with parallel extension directions, two of the support rods are connected to one of the main rods, and one end of each of the support rods is provided with a In the suction cup head, the main rod is provided with a third elongated through groove for connecting the support rod, and the support rod is provided with a fourth elongated through groove for connecting the main rod, The bolt member passes through the third elongated through groove and the fourth elongated through groove to lock the main rod and the support rod.