Circuit board test switching device
Technical Field
The utility model belongs to the technical field of circuit board test switching device, specifically be a circuit board test switching device.
Background
During the manufacturing process of the circuit board, the circuit board is often inspected to check whether it has an open circuit or a short circuit.
In the patent with the publication number CN203535076U, a flexible printed circuit board testing and transferring clamp is disclosed, which includes a flexible printed circuit board signal testing device and a clamp for transferring a testing signal, wherein the flexible printed circuit board signal testing device includes a flexible printed circuit board fixing plate, a POGOPin spring and a probe, and the clamp for transferring the testing signal includes a printed circuit board and a connector.
Although it can complete the testing of circuit boards, it has some disadvantages, such as that it cannot test circuit boards of various sizes, and that the clamping device used cannot clamp and test a certain portion of the circuit board.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a circuit board test switching device to solve the unable circuit board of testing multiple not equidimension of patent that the authorization bulletin number is CN203535076U among the prior art, can't carry out the centre gripping to a certain part of circuit board and carry out the problem that detects.
In order to achieve the above object, the utility model provides a following technical scheme: a circuit board test switching device comprises a base, wherein the base is made of forty-five steel, is firm and durable, and is provided with a switch for controlling a cylinder, the utility model does not change other parts of a patent with an authorization announcement number of CN203535076U, a mounting plate is arranged on the base and is made of the forty-five steel, is firm and durable, a cylinder is arranged on the mounting plate, the type of the cylinder is LCSCHG 07, the cylinder is connected with an external air source through an air pipe and is connected with the external power source and the switch through a lead when in use, the cylinder is used for clamping a circuit board and is provided with a transverse plate, the cylinder is made of the forty-five steel, is firm and durable, a vertical plate is arranged on the transverse plate and is made of the forty-five steel, the transverse plate is made of the forty-five steel, is firm and durable, a bidirectional threaded rod is arranged between the vertical plates, a guide rod is arranged between the vertical plates, a fixing block is arranged on the guide rod and is made of the forty-five steel, the fixing block is in threaded fit connection with the bidirectional threaded rod, the base is provided with a fixing plate which is made of forty-five steel and is firm and durable, the fixing plate is provided with a supporting column which is made of forty-five steel and is firm and durable, the supporting column is provided with a printed circuit board, the printed circuit board is provided with a probe, the printed circuit board is provided with a connector, the utility model does not change the printed circuit board, the connector and the probe, the fixing plate is provided with a slide rail which is made of forty-five steel and is firm and durable, the slide rail is provided with a slide block which is made of forty-five steel and is firm and durable, the slider is provided with a telescopic device, so that different types of printed circuit boards and probes can be placed on the supporting column according to different requirements of the equipment to test different circuit boards, and different parts of the circuit board can be measured by different parts of the circuit board placed on the telescopic device.
Preferably, the telescoping device includes the recess, the recess is located the slider, the inside of recess is equipped with the telescopic link, and its material is forty-five steel, and is durable, be equipped with the block rubber on the telescopic link, the block rubber is butadiene acrylonitrile rubber, and its effect is, prevents that the telescopic link from hurting the circuit board, be equipped with the spring between block rubber and the slider, the total forty-eight of symmetry of telescoping device, the effect of telescoping device is, can adapt to the not detection of the circuit board of equidimension, makes things convenient for the shift position to carry out local detection.
Preferably, the fixed block is provided with a rubber pad, the rubber pad is nitrile rubber, and the rubber pad has the effect of preventing the fixed block from damaging the circuit board.
Preferably, the two-way threaded rod and the guide rod are both provided with a stop block, and the stop blocks are used for preventing the two fixing blocks from colliding.
Preferably, the slide rail is a dovetail slide rail, and the function of the dovetail slide rail is to provide vertical limitation for the slide block, so that the slide block is more stable.
Preferably, the bidirectional threaded rod is provided with a hand wheel which is made of forty-five steel, so that the bidirectional threaded rod is firm and durable, and the space between the two fixing blocks can be conveniently adjusted by hands to adapt to circuit boards with different sizes.
Compared with the prior art, the beneficial effects of the utility model are that: through the support column, the telescoping device, the slide rail, make equipment can place the printed circuit board of different grade type on the support column according to the demand of difference, the probe, with the different circuit boards of test, and place the position on the telescoping device through the circuit board different that can measure each different position of circuit board again, through the fixed block, two-way threaded rod, the hand wheel, make equipment can adjust the degree and the position of centre gripping according to the size of circuit board, and can change the centre gripping position when measuring the different positions of circuit board, with better completion measurement task.
Drawings
Fig. 1 is a front sectional view of the present invention;
fig. 2 is a top view of the printed circuit board of fig. 1 according to the present invention;
fig. 3 is a bottom view of the fixing block of fig. 1 according to the present invention;
fig. 4 is an enlarged view of a portion a in fig. 1 according to the present invention.
In the figure: 1 support column, 10 printed circuit boards, 11 sliding blocks, 12 rubber pads, 13 hand wheels, 14 fixing blocks, 15 transverse plates, 16 fixing plates, 17 vertical plates, 18 stop blocks, 19 bidirectional threaded rods, 2 probes, 3 guide rods, 4 cylinders, 5 bases, 6 mounting plates, 7 sliding rails, 8 telescopic devices, 81 grooves, 82 telescopic rods, 83 springs, 84 rubber blocks and 9 connectors.
Detailed Description
Referring to fig. 1, 2, 3 and 4, a circuit board testing and switching device comprises a base 5, a mounting plate 6 is welded on the base 5, an air cylinder 4 is connected on the mounting plate 6 through screws, the air cylinder 4 is used for clamping a circuit board, a transverse plate 15 is welded on the air cylinder 4, vertical plates 17 are welded on the transverse plate 15, a bidirectional threaded rod 19 is rotatably connected between the vertical plates 17, guide rods 3 are welded between the vertical plates 17, a fixing block 14 is rotatably connected on the guide rods 3, the fixing block 14 is in threaded fit connection with the bidirectional threaded rod 19, a fixing plate 16 is welded on the base 5, a supporting column 1 is welded on the fixing plate 16, a printed circuit board 10 is placed on the supporting column 1, probes 2 are connected on the printed circuit board 10 through screws, a connector 9 is connected on the printed circuit board 10 through screws, a sliding rail 7 is welded on the fixing plate 16, and a sliding block 11 is slidably connected on the sliding rail 7, the slider 11 is provided with a telescopic device 8, which has the function that equipment can place different types of printed circuit boards 10 and probes 2 on the support column 1 according to different requirements so as to test different circuit boards, and different parts of the circuit board can be measured according to different parts of the circuit board placed on the telescopic device 8.
Referring to fig. 1, 2 and 4, the retractable device 8 includes a groove 81, the groove 81 is located on the sliding block 11, a retractable rod 82 is slidably connected inside the groove 81, a rubber block 84 is glued on the retractable rod 82, and a spring 83 is welded between the rubber block 84 and the sliding block 11.
Referring to fig. 1, 2, 3 and 4, a rubber pad 12 is glued on the fixing block 14 to prevent the fixing block 14 from damaging the circuit board, a stop block 18 is welded on each of the bidirectional threaded rod 19 and the guide rod 3 to prevent the two fixing blocks 14 from colliding, the telescopic device 8 is forty-eight symmetrical, the slide rails 7 are dovetail slide rails, and a hand wheel 13 is welded on each bidirectional threaded rod 19 to adjust the distance between the two fixing blocks 14 by hands conveniently to adapt to the circuit boards with different sizes.
The working principle of the scheme is as follows: firstly, the slide blocks 11 are adjusted by hands according to the specification of a circuit board to be tested, the slide blocks 11 slide on the slide rails 7 to adjust the distance between the two slide blocks 11, then the circuit board is placed on the telescopic devices 8 at two sides according to the position of the circuit board to be tested, then the position to be tested corresponds to the probe 2, then the hand wheel 13 is rotated according to the position to be clamped, the bidirectional threaded rod 19 is rotated, the fixed block 14 is further moved along the guide rod 3, after the adjustment is completed, the air cylinder 4 is started, the output end of the air cylinder 4 is moved, the fixed block 14 is further moved downwards to clamp the circuit board, the telescopic rod 82 which is stressed in the process is contracted, the circuit board is connected with the probe 2, then the probe 2 transmits the detected signal to the connector 9, and the connector 9 transmits the signal to an external detection instrument.
So just make equipment can be according to the demand of difference through placing the printed circuit board 10 of different grade type, probe 2 on support column 1 to test different circuit boards, and place the position on telescoping device 8 upper portion difference through the circuit board and can measure each different position of circuit board again, through fixed block 14, two-way threaded rod 19, hand wheel 13, make equipment can adjust the degree and the position of centre gripping according to the size of circuit board, and can change the clamping position when measuring the different position of circuit board, measure the task with better completion.