CN116124571B - Printed circuit board pull-out strength tester - Google Patents
Printed circuit board pull-out strength tester Download PDFInfo
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- CN116124571B CN116124571B CN202211446223.1A CN202211446223A CN116124571B CN 116124571 B CN116124571 B CN 116124571B CN 202211446223 A CN202211446223 A CN 202211446223A CN 116124571 B CN116124571 B CN 116124571B
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- fixedly connected
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- box
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- 238000012360 testing method Methods 0.000 claims abstract description 86
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 230000005540 biological transmission Effects 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000012634 fragment Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention belongs to the technical field of strength test, in particular to a pull-out strength tester for a printed circuit board. According to the invention, the lifting plate can be controlled to be adjusted in height by arranging the height adjusting mechanism, the circuit board can be tested by matching with the contact testing mechanism, the inclination angle of the lifting plate can be controlled by arranging the angle adjusting mechanism, so that the circuit board can be tested for pull-out strength at different angles, and the longitudinal position of the lifting plate can be adjusted by arranging the longitudinal adjusting mechanism, so that the circuit board can be tested for pull-out strength at different contact areas and positions, and the testing convenience is further improved.
Description
Technical Field
The invention relates to the technical field of strength test, in particular to a pull-out strength tester for a printed circuit board.
Background
The circuit board can be called a printed circuit board or a printed circuit board, the FPC circuit board is also called a flexible circuit board which is made of polyimide or polyester film as a base material, has the characteristics of high wiring density, light weight, thin thickness and good bending property, and the flexible printed circuit board is characterized by the birth and development of FPC and PCB of a rigid-flex board, after the circuit board is produced, the product needs to be tested, but the test efficiency of the current circuit board is lower, and the labor requirement is larger.
After the printed circuit board and the installation position are assembled, in order to test the assembly firmness, the pull-out strength test needs to be carried out on the printed circuit board, the pull-out strength test can only be carried out on the printed circuit board in one horizontal direction by the conventional test force instrument, the multi-angle pull-out can not be carried out, and the pull-out force test device is designed based on the defects and needs to be improved in the prior art.
Disclosure of Invention
The invention provides a printed circuit board pull-out strength tester, which is based on the technical problem that the existing test force-based instrument can only singly carry out pull-out strength test on a circuit board in a horizontal direction and cannot carry out multi-angle pull-out.
The invention provides a pull-out strength tester for a printed circuit board, which comprises a box body, wherein an inner box is fixedly connected to the inner wall of the box body, a cover plate is rotatably connected to the outer wall of one side of the inner box, an electric cabinet is fixedly connected to the outer wall of the inner box, a test frame is arranged in the inner box, a circuit board is arranged at the top of the test frame, a plurality of mounting bolts are connected to the outer wall of the top of the circuit board in a threaded manner, the mounting bolts are connected with the test frame in a threaded manner, a lifting plate is arranged at the bottom of the circuit board, a height adjusting mechanism is arranged between the lifting plate and the box body, a contact testing mechanism is arranged between the lifting plate and the circuit board, angle adjusting mechanisms are arranged at two ends of the test frame, and a longitudinal adjusting mechanism is arranged between the lifting plate and the test frame.
Preferably, the height adjusting mechanism comprises a first motor and a threaded screw rod, a first sliding groove is formed in one side of the inner wall of the box body, a lifting sliding block is slidably connected to the inner wall of the first sliding groove, the threaded screw rod is in threaded connection with the lifting sliding block, the top of the threaded screw rod is fixedly connected with the first motor, the first motor is fixedly connected with the box body, a limit rod is fixedly connected with the lifting sliding block, the limit rod is rotationally connected with the lifting plate, a telescopic rod is fixedly connected to the outer wall of the threaded screw rod, and one end of the telescopic rod is located outside the first sliding groove.
Preferably, the angle adjusting mechanism comprises a screw and a movable block, the outer walls at two ends of the test frame are all rotationally connected with a first connecting plate, the outer wall at the other end of the first connecting plate is fixedly connected with the movable block, the outer wall of the movable block is rotationally connected with a connecting block, the top of the connecting block is rotationally connected with the screw, and the top of the screw is rotationally connected with the box.
Preferably, the contact testing mechanism comprises a second connecting plate and a pressing plate, a third sliding groove is formed in the outer wall of the top of the lifting plate, a plurality of second sliding blocks are slidably connected to the inner wall of the third sliding groove, limit bolts are connected to the outer wall of the top of each second sliding block in a threaded mode, a supporting plate is fixedly connected to the top of each second sliding block, the top of each supporting plate is fixedly connected with the corresponding second connecting plate, a pressure detection mechanism is fixedly connected to the top of each second connecting plate, a plurality of second springs are fixedly connected between the corresponding second connecting plate and the pressing plate, inserting blocks are fixedly connected to one end of each second connecting plate and one end of each pressing plate, and inserting grooves are formed in the other ends of the second connecting plate and the pressing plate.
Preferably, a plurality of outlet pipes of inner tank inner wall both sides outer wall fixedly connected with, inner tank outer wall fixedly connected with air duct, the air duct sets up to the U type, air duct and outlet duct fixed connection, air duct outer wall fixedly connected with air pump, a plurality of heater strips of outlet duct inner wall fixedly connected with, heater strip and electric cabinet electric connection.
Preferably, the inner box bottom is provided with the liquid collecting bin, liquid collecting bin one end outer wall fixedly connected with feed liquor pipe, liquid collecting bin inner wall fixedly connected with water pump, water pump top fixedly connected with catheter, the catheter is established to L, catheter outer wall fixedly connected with valve, lifter plate bottom is provided with a plurality of atomizer, atomizer and catheter fixed connection.
Preferably, inner box one end outer wall fixedly connected with second motor, second motor outer wall fixedly connected with axis of rotation, atomizer top is provided with the spoiler, spoiler and axis of rotation fixed connection, box top outer wall fixedly connected with passageway of giving vent to anger, passageway top fixedly connected with guard plate of giving vent to anger, a plurality of leak holes have been seted up to the guard plate outer wall.
Preferably, the vertical adjustment mechanism includes drive pole and belt, the second spout has all been seted up at test frame inner wall both ends, second spout inner wall sliding connection has first slider, a plurality of first springs of fixedly connected with between first slider and the second spout inner wall, first slider and drive pole rotate to be connected, drive the pole other end fixedly connected with drive piece, it is protruding to drive piece outer wall fixedly connected with sawtooth, the sawtooth groove has been seted up at lifter plate top outer wall both ends, the natural contact of sawtooth groove and sawtooth protrusion, drive pole outer wall fixedly connected with second transmission piece, second transmission piece and belt drive connection, belt bottom transmission is connected with first transmission piece, first transmission piece and axis of rotation fixedly connected with, first transmission piece and second transmission piece outer wall both ends are all fixedly connected with curb plate, the belt is provided with elasticity.
Preferably, the inner wall of the air outlet channel is fixedly connected with a connecting rod, the bottom of the connecting rod is fixedly connected with a plurality of vertical rods, the bottom of the vertical rods is fixedly connected with a receiving plate, and the receiving plate is arranged to be concave.
Preferably, two sections of the outer wall of the top of the circuit board are provided with baffles, the tops of the baffles are fixedly connected with a plurality of third springs, the tops of the third springs are fixedly connected with the inner wall of the box body, the baffles are arc-shaped, the outer wall of the bottom of the baffles is fixedly connected with a plurality of elastic sheets, and the elastic sheets are arc-shaped.
Compared with the prior art, the invention provides a tester for the pull-out strength of a printed circuit board, which has the following beneficial effects:
1. this printed circuit board draws and takes off intensity tester, can utilize the mounting bolt to install the circuit board fixedly through setting up the test frame, press test treatment to the circuit board through setting up the contact test mechanism at lifter plate top, can control the lifter plate through setting up high adjustment mechanism and carry out altitude mixture control, cooperation contact test mechanism can carry out test treatment to the circuit board, can control the inclination of lifter plate through setting up angle adjustment mechanism, thereby can carry out the drawing off intensity test of different angles to the circuit board, can adjust the longitudinal position of lifter plate through setting up vertical adjustment mechanism, thereby can carry out different area of contact and position to the circuit board and draw off intensity test, further improve test convenience.
2. This printed circuit board draws and takes off intensity tester, utilize the air duct to blow in the air current to a plurality of outlet ducts of inner box inner wall through setting up the air pump, heat the air current through setting up the heater strip of electric cabinet control outlet duct inner wall, thereby make the temperature rise in the inner box, avoid violently rising, thereby can be according to adjusting the temperature variation in the inner box and draw out intensity test to the circuit board, take off the rivers in the collection liquid storehouse through setting up the water pump, through setting up the rivers atomizing blowout of valve control atomizer in with the catheter, thereby make the humidity in the inner box rise, thereby can be according to the humidity variation in the inner box of regulation carry out the intensity test of drawing off to the circuit board, further improve the test effect to the circuit board under various environment.
3. This printed circuit board draws and takes off intensity tester, can in time discharge the moisture air current of inner box through setting up the passageway of giving vent to anger, can catch from guard plate and through the drop of water that contains the air current contact condensation of steam through setting up the material receiving plate that the passageway inner wall of giving vent to anger is connected by connecting rod and montant, avoid drop of water drop to the circuit board on, play the effect of protection.
4. This printed circuit board draws and takes off intensity tester, can shelter from the protection to cracked circuit board when testing the circuit board through the baffle that sets up the circuit board top, can play the purpose of elasticity buffering through setting up the third spring between baffle and the box, can carry out elasticity buffering to the circuit board that the bullet flies through a plurality of elastic pieces that set up the baffle outer wall, and can clip partial piece, avoid the piece to splash.
Drawings
Fig. 1 is a schematic main structure diagram of a pull-out strength tester for a printed circuit board according to the present invention;
FIG. 2 is a schematic diagram showing a partial cross-sectional structure of a pull-out strength tester for a printed circuit board according to the present invention;
fig. 3 is a schematic diagram of the main structure of a vent pipe of the pull-out strength tester for a printed circuit board according to the present invention;
fig. 4 is a schematic view of the main structure of an adjusting lever of the pull-out strength tester for a printed circuit board according to the present invention;
fig. 5 is a schematic diagram of the main structure of the inner box of the tester for the pull-out strength of the printed circuit board according to the present invention;
fig. 6 is a schematic diagram of a main structure of a test frame of a pull-out strength tester for a printed circuit board according to the present invention;
fig. 7 is a schematic diagram of a main structure of a rotating shaft of a pull-out strength tester for a printed circuit board according to the present invention;
fig. 8 is a schematic diagram of a partial cross-sectional structure of a pull-out strength tester for a printed circuit board according to embodiment 2 of the present invention;
fig. 9 is a schematic diagram of a partial cross-sectional structure of a pull-out strength tester for a printed circuit board according to embodiment 3 of the present invention.
In the figure: 1 box, 2 air ducts, 3 heating wires, 4 air outlet pipes, 5 screw rods, 6 screw rods, 7 protection plates, 8 first motors, 9 air outlet channels, 10 first sliding grooves, 11 telescopic rods, 12 atomizing spray heads, 13 liquid guide pipes, 14 valves, 15 water pumps, 16 inner boxes, 17 liquid collecting bins, 18 liquid inlet pipes, 19 second motors, 20 first transmission blocks, 21 electric control boxes, 22 rotating shafts, 23 side plates, 24 cover plates, 25 belts, 26 air pumps, 27 connecting blocks, 28 movable blocks, 29 bolts, 30 first connecting plates, 31 circuit boards, 32 mounting bolts, 33 first springs, 34 first sliding blocks, 35 second sliding grooves, 36 second springs, 37 second transmission blocks, 38 second connecting plates, 39 driving rods, 40 driving blocks, 41 test frames, 42 pressing plates, 43 pressure detection mechanisms, 44 spoilers, 45 connecting rods, 46 material receiving plates, 47 third springs, 48 baffles, 49 elastic sheets, 50, 51 lifting plates, 52 third sliding grooves, 53 limiting rods, 54 limiting bolts, 55 second sliding blocks, 56 supporting plates, 57, 58 inserting grooves and 59 inserting grooves.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
Referring to fig. 1 to 7, a pull-out strength tester for a printed circuit board comprises a box body 1, an inner box is fixedly connected to the inner wall of the box body 1, a cover plate 24 is rotatably connected to the outer wall of one side of the inner box 16, an electric cabinet 21 is fixedly connected to the outer wall of the inner box 16, a test frame 41 is arranged in the inner box, a circuit board 31 is arranged at the top of the test frame 41, a plurality of mounting bolts 32 are connected to the outer wall of the top of the circuit board 31 in a threaded manner, the mounting bolts 32 are connected to the test frame 41 in a threaded manner, a lifting plate 51 is arranged at the bottom of the circuit board 31, a height adjusting mechanism is arranged between the lifting plate 51 and the box body 1, a contact test mechanism is arranged between the lifting plate 51 and the circuit board 31, angle adjusting mechanisms are arranged at both ends of the test frame 41, a longitudinal adjusting mechanism is arranged between the lifting plate 51 and the test frame 41, the circuit board 31 can be installed and fixed by using the mounting bolts 32 through the arrangement of the test frame 41, the circuit board 31 is subjected to pressing test treatment by the contact test mechanism arranged at the top of the lifting plate 51, the lifting plate 51 can be controlled to be subjected to height adjustment by the arrangement of the height adjustment mechanism, the circuit board 31 can be subjected to test treatment by the cooperation of the contact test mechanism, the inclination angle of the lifting plate 51 can be controlled by the arrangement of the angle adjustment mechanism, so that the circuit board 31 can be subjected to pull-off strength tests at different angles, the longitudinal position of the lifting plate 51 can be adjusted by the arrangement of the longitudinal adjustment mechanism, and thus, the circuit board 31 can be subjected to pull-off strength tests at different contact areas and positions, and the test convenience is further improved.
In the invention, the height adjusting mechanism comprises a first motor 8 and a threaded screw rod 6, a first chute 10 is formed on one side of the inner wall of a box body 1, a lifting slide block is slidably connected to the inner wall of the first chute 10, the threaded screw rod 6 is in threaded connection with the lifting slide block, the top of the threaded screw rod 6 is fixedly connected with the first motor 8, the first motor 8 is fixedly connected with the box body 1, the lifting slide block is fixedly connected with a limiting rod 53, the limiting rod 53 is rotationally connected with a lifting plate 51, the outer wall of the threaded screw rod 6 is fixedly connected with a telescopic rod 11, one end of the telescopic rod 11 is positioned outside the first chute 10, the lifting plate 51 can be controlled to be adjusted in height, and the circuit board 31 can be tested by matching with the contact testing mechanism;
the angle adjusting mechanism comprises a screw 5 and a movable block 28, wherein the outer walls of the two ends of the test frame 41 are respectively and rotatably connected with a first connecting plate 30, the outer wall of the other end of the first connecting plate 30 is fixedly connected with the movable block 28, the outer wall of the movable block 28 is rotatably connected with a connecting block 27, the top of the connecting block 27 is rotatably connected with the screw 5, the top of the screw 5 is rotatably connected with the box body 1, and the inclination angle of the lifting plate 51 can be controlled, so that pull-off strength tests of different angles can be carried out on the circuit board 31;
the contact test mechanism comprises a second connecting plate 38 and a pressing plate 42, a third sliding groove 52 is formed in the outer wall of the top of the lifting plate 51, a plurality of second sliding blocks 55 are slidably connected to the inner wall of the third sliding groove 52, limit bolts 54 are connected to the outer wall of the top of each second sliding block 55 in a threaded mode, a supporting plate 56 is fixedly connected to the top of each second sliding block 55, the top of each supporting plate 56 is fixedly connected with the corresponding second connecting plate 38, a pressure detection mechanism 43 is fixedly connected to the top of each second connecting plate 38, a plurality of second springs 36 are fixedly connected between the corresponding second connecting plate 38 and the corresponding pressing plate 42, an inserting block 58 is fixedly connected to one end of each second connecting plate 38 and one end of the corresponding pressing plate 42, a slot 57 is formed in the other end of each second connecting plate 42, and the circuit board 31 is subjected to press test treatment through the contact test mechanism provided with the top of the lifting plate 51;
the bottom of the inner box 16 is provided with a liquid collecting bin 17, the outer wall of one end of the liquid collecting bin 17 is fixedly connected with a liquid inlet pipe 18, the inner wall of the liquid collecting bin 17 is fixedly connected with a water pump 15, the top of the water pump 15 is fixedly connected with a liquid guide pipe 13, the liquid guide pipe 13 is arranged to be L-shaped, the outer wall of the liquid guide pipe 13 is fixedly connected with a valve 14, the bottom of a lifting plate 51 is provided with a plurality of atomizing nozzles 12, the atomizing nozzles 12 are fixedly connected with the liquid guide pipe 13, the outer walls of two sides of the inner wall of the inner box 16 are fixedly connected with a plurality of air outlet pipes 4, the outer wall of the inner box 16 is fixedly connected with an air guide pipe 2, the air guide pipe 2 is arranged to be U-shaped, the air guide pipe 2 is fixedly connected with the air outlet pipe 4, the outer wall of the air guide pipe 2 is fixedly connected with an air pump 26, the inner wall of the air outlet pipe 4 is fixedly connected with a plurality of heating wires 3, the heating wires 3 are electrically connected with an electric control box 21, the outer wall of one end of the inner box 16 is fixedly connected with a second motor 19, the outer wall of the second motor 19 is fixedly connected with a rotating shaft 22, the top of the atomizing spray head 12 is provided with a spoiler 44, the spoiler 44 is fixedly connected with the rotating shaft 22, the outer wall of the top of the box body 1 is fixedly connected with an air outlet channel 9, the top of the air outlet channel 9 is fixedly connected with a protection plate 7, a plurality of leakage holes are formed in the outer wall of the protection plate 7, the air pump 26 is arranged to blow air flow into a plurality of air outlet pipes 4 on the inner wall of the inner box 16 by utilizing the air guide pipe 2, the electric control box 21 is arranged to control the heating wire 3 on the inner wall of the air outlet pipe 4 to heat the air flow, so that the temperature in the inner box 16 is increased, the violent increase is avoided, the pull-off strength test can be carried out on the circuit board 31 according to the temperature change in the inner box 16, the water flow in the liquid collecting bin 17 is pumped out by arranging the water pump 15, the atomizing spray head 12 is controlled to spray the water flow in the liquid guide pipe 13 by arranging the valve 14, the humidity in the inner box 16 is increased, therefore, the pull-out strength test can be carried out on the circuit board 31 by adjusting the humidity change in the inner box 16, and the test effect of the circuit board 31 under various environments is further improved;
the vertical adjustment mechanism includes drive pole 39 and belt 25, second spout 35 has all been seted up at test rack 41 inner wall both ends, second spout 35 inner wall sliding connection has first slider 34, fixedly connected with a plurality of first springs 33 between first slider 34 and the second spout 35 inner wall, first slider 34 and drive pole 39 rotate and connect, drive pole 39 other end fixedly connected with drives piece 40, drive piece 40 outer wall fixedly connected with sawtooth is protruding, the sawtooth groove 50 has been seted up at lifter plate 51 top outer wall both ends, sawtooth groove 50 and the protruding natural contact of sawtooth, drive pole 39 outer wall fixedly connected with second transmission piece 37, second transmission piece 37 and belt 25 transmission are connected, belt 25 bottom transmission is connected with first transmission piece 20, first transmission piece 20 and axis of rotation 22 fixed connection, first transmission piece 20 and second transmission piece 37 outer wall both ends all fixedly connected with curb plate 23, belt 25 is provided with elasticity, through setting up vertical adjustment mechanism and can adjust lifter plate 51's longitudinal position, thereby can carry out different area and position and pull-out tensile strength test to circuit board 31, further improve the test convenience.
During the use, can utilize mounting bolt 32 to install fixedly circuit board 31 through setting up test frame 41, contact test mechanism through setting up lifter plate 51 top carries out the test treatment to circuit board 31, can control lifter plate 51 through setting up high adjustment mechanism and carry out the altitude mixture control, cooperation contact test mechanism can carry out the test treatment to circuit board 31, can control the inclination of lifter plate 51 through setting up angle adjustment mechanism, thereby can carry out the pull-out intensity test of different angles to circuit board 31, can adjust the longitudinal position of lifter plate 51 through setting up vertical adjustment mechanism, thereby can carry out the pull-out intensity test of different area and position to circuit board 31, further improve test convenience, utilize the air duct 2 to blow in the air current to a plurality of outlet ducts 4 of inner wall of inner box 16 through setting up air pump 26, heat wire 3 through setting up electric cabinet 21 control outlet duct 4 inner wall, thereby make the temperature in the inner box 16 rise, thereby can carry out the pull-out the intensity test to circuit board 31 through setting up the temperature variation in the violent adjustment inner box 16, thereby can carry out the pull-out the intensity test to circuit board 31, take out the pull-out the intensity test to the humidity test tube through setting up water pump 15 and take out the valve 17 and take out the test panel through setting up the humidity in the humidity of the inner box 13, thereby can be improved in the humidity test panel 13, the humidity of the inner box is controlled in the inner box 16, thereby can be improved and the humidity test effect is improved.
Example 2
Referring to fig. 8, a pull-out strength tester for a printed circuit board is provided, wherein a connecting rod 45 is fixedly connected to an inner wall of an air outlet channel 9, a plurality of vertical rods 59 are fixedly connected to the bottom of the connecting rod 45, a material receiving plate 46 is fixedly connected to the bottom of the vertical rods 59, and the material receiving plate 46 is concave.
When the protective board is used, the moisture air flow of the inner box 16 can be timely discharged through the air outlet channel 9, the material receiving plate 46 connected with the connecting rod 45 and the vertical rod 59 through the inner wall of the air outlet channel 9 can catch water drops which are condensed by contacting the air flow containing water vapor from the protective board 7, and the water drops are prevented from dripping on the circuit board 31, so that the protective effect is realized.
Example 3
Referring to fig. 9, a pull-out strength tester for a printed circuit board is provided, wherein two sections of the outer wall of the top of the circuit board 31 are respectively provided with a baffle plate 48, a plurality of third springs 47 are fixedly connected to the top of the baffle plates 48, the tops of the third springs 47 are fixedly connected with the inner wall of the box body 1, the baffle plates 48 are arranged into an arc shape, a plurality of elastic sheets 49 are fixedly connected to the outer wall of the bottom of the baffle plates 48, and the elastic sheets 49 are arranged into an arc shape.
When the test device is used, the broken circuit board 31 can be shielded and protected when the circuit board 31 is tested by the baffle 48 arranged at the top of the circuit board 31, the purpose of elastic buffering can be achieved by the third spring 47 arranged between the baffle 48 and the box body 1, the circuit board 31 which is sprung and flown can be elastically buffered by the plurality of elastic sheets 49 arranged on the outer wall of the baffle 48, and part of fragments can be clamped, so that the fragments are prevented from splashing.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (6)
1. The utility model provides a printed circuit board pull-out strength tester, includes box (1), box (1) inner wall fixedly connected with inner box, inner box (16) one side outer wall rotates and is connected with apron (24), its characterized in that, inner box (16) outer wall fixedly connected with electric cabinet (21), the inside test frame (41) that is provided with of inner box, test frame (41) top is provided with circuit board (31), circuit board (31) top outer wall threaded connection has a plurality of mounting bolts (32), mounting bolts (32) and test frame (41) threaded connection, circuit board (31) bottom is provided with lifter plate (51), be provided with height-adjusting mechanism between lifter plate (51) and box (1), set up contact test mechanism between lifter plate (51) and the circuit board (31), test frame (41) both ends all are provided with angle adjustment mechanism, be provided with vertical adjustment mechanism between lifter plate (51) and the test frame (41), height-adjusting mechanism includes first motor (8) and box (6) inner wall (6) screw thread connection (6) and first screw thread (6) slider (6) screw thread connection, first screw (6) screw thread (6) are equipped with, the first motor (8) is fixedly connected with the box body (1), the lifting slide block is fixedly connected with the limiting rod (53), the limiting rod (53) is rotationally connected with the lifting plate (51), the threaded screw rod (6) is fixedly connected with the telescopic rod (11), one end of the telescopic rod (11) is positioned outside the first sliding groove (10), the angle adjusting mechanism comprises a screw rod (5) and a movable block (28), the outer walls of two ends of the test frame (41) are rotationally connected with the first connecting plate (30), the outer wall of the other end of the first connecting plate (30) is fixedly connected with the movable block (28), the outer wall of the movable block (28) is rotationally connected with the connecting block (27), the top of the connecting block (27) is rotationally connected with the screw rod (5), the top of the screw rod (5) is rotationally connected with the box body (1), the contact testing mechanism comprises a second connecting plate (38) and a pressing plate (42), a third sliding groove (52) is formed in the outer wall of the top of the lifting plate (51), the inner wall of the third sliding groove (52) is slidingly connected with a plurality of second sliding blocks (55), the outer wall of the top of the second sliding blocks (55) is rotationally connected with a limiting bolt (54), the top of the second sliding blocks (55) is fixedly connected with the first connecting plate (56) and the second connecting plate (56) is fixedly connected with the second connecting plate (38) and the second connecting plate (38), a plurality of second springs (36) are fixedly connected between the second connecting plate (38) and the pressing plate (42), an inserting block (58) is fixedly connected at one end of the second connecting plate (38) and one end of the pressing plate (42), a slot (57) is formed at the other end of the second connecting plate (38) and the other end of the pressing plate (42), the longitudinal adjusting mechanism comprises a driving rod (39) and a belt (25), second sliding grooves (35) are formed at two ends of the inner wall of the test frame (41), a first sliding block (34) is slidably connected to the inner wall of the second sliding groove (35), a plurality of first springs (33) are fixedly connected between the first sliding block (34) and the inner wall of the second sliding groove (35), the first sliding block (34) is rotationally connected with the driving rod (39), a driving block (40) is fixedly connected to the other end of the driving rod (39), saw tooth protrusions are fixedly connected to the outer wall of the driving block (40), a second transmission block (37) is formed at two ends of the top of the lifting plate (51), the saw tooth grooves (50) are naturally contacted with the saw tooth protrusions, a second transmission block (37) is fixedly connected to the outer wall of the driving rod (39), the second transmission block (37) is connected to the belt (25) in a transmission mode, a transmission block (25) is fixedly connected to the bottom of the first transmission block (20), both ends of the outer walls of the first transmission block (20) and the second transmission block (37) are fixedly connected with side plates (23), and the belt (25) is provided with elasticity.
2. The pull-out strength tester for the printed circuit board according to claim 1, wherein a plurality of air outlet pipes (4) are fixedly connected to two sides and the outer wall of the inner box (16), the air guide pipe (2) is fixedly connected to the outer wall of the inner box (16), the air guide pipe (2) is arranged into a U shape, the air guide pipe (2) is fixedly connected with the air outlet pipes (4), the air pump (26) is fixedly connected to the outer wall of the air guide pipe (2), the plurality of heating wires (3) are fixedly connected to the inner wall of the air outlet pipes (4), and the heating wires (3) are electrically connected with the electric cabinet (21).
3. The printed circuit board pull-out strength tester according to claim 1, wherein a liquid collecting bin (17) is arranged at the bottom of the inner box (16), a liquid inlet pipe (18) is fixedly connected to the outer wall of one end of the liquid collecting bin (17), a water pump (15) is fixedly connected to the inner wall of the liquid collecting bin (17), a liquid guide pipe (13) is fixedly connected to the top of the water pump (15), the liquid guide pipe (13) is arranged into an L shape, a valve (14) is fixedly connected to the outer wall of the liquid guide pipe (13), a plurality of atomizing spray heads (12) are arranged at the bottom of the lifting plate (51), and the atomizing spray heads (12) are fixedly connected with the liquid guide pipe (13).
4. The printed circuit board pull-out strength tester according to claim 3, wherein a second motor (19) is fixedly connected to the outer wall of one end of the inner box (16), a rotating shaft (22) is fixedly connected to the outer wall of the second motor (19), a spoiler (44) is arranged at the top of the atomizing nozzle (12), the spoiler (44) is fixedly connected with the rotating shaft (22), an air outlet channel (9) is fixedly connected to the outer wall of the top of the box (1), a protection plate (7) is fixedly connected to the top of the air outlet channel (9), and a plurality of leakage holes are formed in the outer wall of the protection plate (7).
5. The pull-out strength tester for the printed circuit board according to claim 4, wherein the inner wall of the air outlet channel (9) is fixedly connected with a connecting rod (45), the bottom of the connecting rod (45) is fixedly connected with a plurality of vertical rods (59), the bottom of the vertical rods (59) is fixedly connected with a receiving plate (46), and the receiving plate (46) is arranged to be concave.
6. The pull-out strength tester for the printed circuit board according to claim 1, wherein a baffle (48) is arranged on two sections of the outer wall of the top of the circuit board (31), a plurality of third springs (47) are fixedly connected to the top of the baffle (48), the top of the third springs (47) is fixedly connected with the inner wall of the box body (1), the baffle (48) is arranged into an arc shape, a plurality of elastic sheets (49) are fixedly connected to the outer wall of the bottom of the baffle (48), and the elastic sheets (49) are arranged into an arc shape.
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| CN202211446223.1A CN116124571B (en) | 2022-11-18 | 2022-11-18 | Printed circuit board pull-out strength tester |
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| CN202211446223.1A CN116124571B (en) | 2022-11-18 | 2022-11-18 | Printed circuit board pull-out strength tester |
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