CN114034578A - Special circuit board bending resistance test machine - Google Patents
Special circuit board bending resistance test machine Download PDFInfo
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- CN114034578A CN114034578A CN202111331496.7A CN202111331496A CN114034578A CN 114034578 A CN114034578 A CN 114034578A CN 202111331496 A CN202111331496 A CN 202111331496A CN 114034578 A CN114034578 A CN 114034578A
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- 238000005452 bending Methods 0.000 title claims abstract description 33
- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 51
- 238000003825 pressing Methods 0.000 claims description 23
- 230000002457 bidirectional effect Effects 0.000 claims description 9
- 239000003381 stabilizer Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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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
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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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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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a special circuit board bending resistance testing machine, and relates to the field of circuit board testing. This special circuit board bending resistance test machine, including brace table and upper ledge, the lower extreme of upper ledge is connected with the last fixed surface of brace table, is provided with the material platform between upper ledge and the brace table, and the right flank fixedly connected with unloading case of material platform, four support telescopic links of bottom surface fixedly connected with of material platform support the lower extreme of telescopic link and the last fixed surface of brace table and be connected. This special circuit board bending resistance test machine through setting up clamp plate, cavity, pressure spring and hang plate, if the circuit board does not take place the rupture, because the shape of clamp plate is the U-shaped, can stably upwards hold up the circuit board that does not break, if when the clamp plate pushes down and makes the circuit board break, the support column can not carry out the outrigger to the circuit board, and the circuit board drops to a supporting bench, will satisfy the condition and separate with the circuit board that does not satisfy the condition.
Description
Technical Field
The invention relates to the field of circuit board testing, in particular to a special circuit board bending resistance testing machine.
Background
The circuit board has the name: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, PCB board, aluminum substrate, high frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, printed (copper etching technology) circuit board, etc. The circuit board enables the circuit to be miniaturized and visualized, and plays an important role in batch production of fixed circuits and optimization of electric appliance layout.
In some special use environments, the hardness of the used circuit board material needs to reach a certain strength, so that the circuit board can bear a certain bending property, and therefore, when the circuit board is processed, the bending resistance of the circuit board needs to be tested, but the existing anti-bending tester cannot separate the circuit board meeting the conditions from the circuit board not meeting the conditions when a large number of circuit boards are tested.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the special circuit board bending resistance testing machine, which solves the problem that the circuit boards meeting the conditions can not be separated from the circuit boards not meeting the conditions when a large number of circuit boards are detected.
In order to achieve the purpose, the invention is realized by the following technical scheme: a special circuit board bending resistance testing machine comprises a supporting table and an upper frame, wherein the lower end of the upper frame is fixedly connected with the upper surface of the supporting table, a material table is arranged between the upper frame and the supporting table, the right side surface of the material table is fixedly connected with a blanking box, the bottom surface of the material table is fixedly connected with four supporting telescopic rods, the lower ends of the supporting telescopic rods are fixedly connected with the upper surface of the supporting table, a supporting column penetrates through the upper surface of the left end of the material table in a sliding manner, the lower end of the supporting column is fixedly connected with the upper surface of the supporting table, movable boxes are arranged on the front side and the rear side of the left end of the material table, a cavity is formed in each movable box, a sliding plate is inserted in each cavity in a sliding manner, a ridge rod is arranged in each movable box, the sliding plate is sleeved on the outer surface of the ridge rod in a sliding manner, a pressing plate is fixedly connected to one end, which is positioned outside each movable box, and a pushing spring is sleeved on the other end of each ridge rod, promote spring's one end and slide fixed connection, promote spring and keep away from material platform's one end and arris pole fixed connection, the last fixed surface of slide is connected with pressure spring, pressure spring's upper end and the interior roof fixed connection of cavity.
The upper frame is provided with a thread plate, the upper surface of the thread plate is threaded through with a bidirectional screw rod, the upper surface of the upper frame is fixedly connected with a working motor, the output end of the working motor is fixedly connected with the bottom surface of the bidirectional screw rod, the upper surface of the supporting table is positioned at the left side of the material table and is fixedly connected with a material receiving box, an inclined plate is arranged between the two pressing plates above the supporting column, the bottom surface of the upper end of the upper frame is fixedly connected with a bending plate, the right end of the inclined plate is elastically hinged with the lower end of the bending plate, the front side and the rear side of the bending plate are both provided with rotating rods, the right ends of the two rotating rods are both fixedly connected with the inclined plate, the upper surface of the movable box is fixedly connected with a vertical rod, the upper end of the vertical rod slidably penetrates through the bottom surface of the upper frame, the upper end surface of the vertical rod is fixedly connected with the bottom surface of the thread plate, the right side surface of the movable box is hinged with a bent rod, the right side surface of the thread plate is fixedly connected with two pushing frames, the material platform is positioned below the pushing frame.
The left side of workbin sets up the blown down tank with inside intercommunication, the lower extreme of workbin articulates there is the delivery wheel, the positive fixedly connected with pay-off motor of workbin, the output of pay-off motor and the front end fixed connection of delivery wheel.
Preferably, the upper surface of material platform is located the front and back both sides of support column and all articulates there is a plurality of gyro wheel, and the upper end of gyro wheel is tangent with the inner bottom wall of blown down tank.
Preferably, the inside of unloading case is located the left and right sides of delivery wheel and all articulates there is the stabilizer, and the upper end of stabilizer and delivery wheel all is tangent with the interior diapire of blown down tank.
Preferably, two parallel frames are arranged above the material table, the lower ends of the two parallel frames are respectively fixedly connected with the front surface and the back surface of the material table, a positioning frame is arranged above the parallel frames, and the lower end of the positioning frame is fixedly connected with the upper surface of the supporting table.
Preferably, the one end that the arris pole is located the cavity inside articulates there is the pulley, and the one side that cavity and pulley contact is the inclined plane.
Preferably, the pressure spring is internally provided with a limiting rod, the upper end and the lower end of the limiting rod are respectively fixedly connected with the inner walls of the upper side and the lower side of the cavity, the sliding plate is sleeved on the outer surface of the limiting rod in a sliding manner, and the pressing plate is U-shaped.
Preferably, the curved bar is L-shaped, and the side surface of the movable box is positioned below the curved bar and is convex.
Compared with the prior art, the invention has the following beneficial effects:
1. the special circuit board bending resistance testing machine is characterized in that a pressing plate, a cavity, a pressure spring and an inclined plate are arranged, when the movable box drives the pressing plate to move downwards, the threaded plate pushes a material platform downwards through a pushing frame, a support column supports the leftmost circuit board, the movable box moves downwards and pushes the pressing plate to apply pressure to the circuit board through the pressure spring, if the circuit board is not broken, the pressure spring is gradually compressed, because one surface of the cavity is inclined, the pushing spring drives the pressing plate to move gradually towards the movable box, when the pressing plate is separated from the electric board, the pressing plate moves to the position below the electric board under the pushing of the pressure spring, when the movable box resets upwards, the unbroken circuit board can be stably lifted upwards due to the U-shaped pressing plate, because one side of the movable box is convex, the rotating rod can be pushed to rotate through a bent rod, the inclined plate is driven to rotate, make the circuit board can move the hang plate top, after the knee breaks away from the dwang scope, the hang plate resets, when making the clamp plate drive circuit board downstream, the circuit board because the support of hang plate slips into and connects the workbin, if when the clamp plate pushes down and makes the circuit board rupture, the support column can not carry out the outrigger to the circuit board, and the circuit board falls the brace table, will satisfy the condition and separate with the circuit board that does not satisfy the condition.
2. This special circuit board bending resistance test machine, through setting up parallel frame and locating rack, the locating rack is injectd the highest position of material platform, and parallel frame guarantees that the circuit board on the material platform is the individual layer, prevents to detect a plurality of circuit boards when pressure detection, causes to detect inaccurately.
3. This special circuit board bending resistance test machine through setting up delivery wheel and stabilizer, starts the pay-off motor and drives the delivery wheel and rotate, moves the circuit board in the workbin to the material bench through the blown down tank, accomplishes autoloading, and the stabilizer prevents that the circuit board from taking place the slope in the workbin simultaneously, makes the circuit board can not follow the blown down tank roll-off.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection of the feed wheel and feed motor of the present invention;
FIG. 3 is a schematic view of the roller and the material table according to the present invention;
FIG. 4 is a schematic view of the slide plate and the pressure spring according to the present invention;
FIG. 5 is a schematic view of the connection between the inclined plate and the bending plate according to the present invention.
Wherein, 1 supporting platform, 2 putting on shelf, 3 material platform, 4 workbins, 5 support telescopic link, 6 support columns, 7 movable boxes, 8 slide plates, 9 cavities, 10 prismatic rods, 11 pushing springs, 12 pressing plates, 13 pressure springs, 14 thread plates, 15 two-way screw rods, 16 inclined plates, 17 bending plates, 18 rotating rods, 19 vertical rods, 20 bent rods, 21 pushing frames, 22 discharging grooves, 23 feeding wheels, 24 feeding motors, 25 idler wheels, 26 balance wheels, 27 parallel frames, 28 positioning frames, 29 pulleys, 30 limiting rods, 31 material receiving boxes and 32 working motors.
Detailed Description
As shown in fig. 1-5, a special circuit board bending resistance test machine, including brace table 1 and upper ledge 2, the lower extreme of upper ledge 2 is connected with the last fixed surface of brace table 1, be provided with material platform 3 between upper ledge 2 and the brace table 1, the right side fixedly connected with blanking box 4 of material platform 3, four support telescopic links 5 of bottom surface fixedly connected with of material platform 3, the lower extreme of supporting telescopic link 5 is connected with the last fixed surface of brace table 1, the left end upper surface of material platform 3 slides and has run through support column 6, the lower extreme of support column 6 is connected with the last fixed surface of brace table 1.
The front side and the rear side of the left end of the material table 3 are respectively provided with a movable box 7, a cavity 9 is arranged inside the movable box 7, a sliding plate 8 is inserted into the cavity 9 in a sliding manner, a ridge rod 10 is arranged inside the movable box 7, the ridge rod 10 is in a hexagonal prism shape, the ridge rod 10 is prevented from rotating relative to the sliding plate 8, the sliding plate 8 is sleeved on the outer surface of the ridge rod 10 in a sliding manner, one end, located outside the movable box 7, of the ridge rod 10 is fixedly connected with a pressing plate 12, the other end of the ridge rod 10 is movably sleeved with a pushing spring 11, one end of the pushing spring 11 is fixedly connected with the sliding plate 8, one end, located far away from the material table 3, of the pushing spring 11 is fixedly connected with the ridge rod 10, one end, located inside the cavity 9, of the ridge rod 10 is hinged with a pulley 29, one surface, which is in contact with the pulley 29, is an inclined surface, when the ridge rod 10 moves upwards relative to the movable box 7, the contact surface of the cavity 9 and the pulley 29 is an inclined surface, make arris pole 10 can drive clamp plate 12 to the inside removal of movable box 7 under the effect that promotes spring 11, slide 8's last fixed surface is connected with pressure spring 13, pressure spring 13's upper end and the interior roof fixed connection of cavity 9, pressure spring 13's inside is provided with gag lever post 30, gag lever post 30's upper and lower both ends respectively with cavity 9's upper and lower both sides inner wall fixed connection, slide 8 slides and cup joints the surface at gag lever post 30, gag lever post 30 improves the stability when slide 8 slides, clamp plate 12's shape is the U-shaped, make clamp plate 12 when holding in the palm the circuit board, the circuit board is difficult for dropping from clamp plate 12.
A thread plate 14 is arranged above the upper frame 2, a bidirectional screw rod 15 penetrates through the upper surface thread of the thread plate 14, the thread plate 14 circularly moves up and down by being meshed with the bidirectional screw rod 15, the upper surface of the upper frame 2 is fixedly connected with a working motor 32, the output end of the working motor 32 is fixedly connected with the bottom surface of the bidirectional screw rod 15, the upper surface of the supporting table 1 is fixedly connected with a material receiving box 31 at the left side of the material table 3, an inclined plate 16 is arranged between two pressing plates 12 above the supporting column 6, a bending plate 17 is fixedly connected with the bottom surface of the upper end of the upper frame 2, the right end of the inclined plate 16 is elastically hinged with the lower end of the bending plate 17, rotating rods 18 are arranged at the front side and the rear side of the bending plate 17, the right ends of the two rotating rods 18 are fixedly connected with the inclined plate 16, a vertical rod 19 is fixedly connected with the upper surface of the movable box 7, and the upper end of the vertical rod 19 slidably penetrates through the bottom surface of the upper frame 2, the upper end surface of the vertical rod 19 is fixedly connected with the bottom surface of the threaded plate 14, the right side surface of the movable box 7 is hinged with a bent rod 20, the bent rod 20 is L-shaped, and the side surface of the movable box 7 is positioned below the bent rod 20 and is convex, so that the bent rod 20 can only rotate upwards, and the rotating rod 18 cannot be pushed to rotate when the bent rod 20 moves downwards.
Two push away framves 21 of right flank fixedly connected with of screw plate 14, material platform 3 is located the below that pushes away frame 21, the top of material platform 3 is provided with two parallel frame 27, the lower extreme of two parallel frame 27 respectively with the positive back fixed connection of material platform 3, the top of parallel frame 27 is provided with locating rack 28, the lower extreme of locating rack 28 and the last fixed surface who props up supporting bench 1 are connected, parallel frame 27 makes the circuit board unilateral on the material platform 3 place, once detect a plurality of circuit boards when value clamp plate 12, cause and detect inaccurately.
The blown down tank 22 with inside intercommunication is seted up to the left surface of workbin 4, the upper surface of material platform 3 is located that both sides all articulate has a plurality of gyro wheel 25 around the support column 6, the upper end of gyro wheel 25 is tangent with the interior diapire of blown down tank 22, the inside left and right sides that is located feed pulley 23 of workbin 4 all articulates there is stabilizer 26, stabilizer 26 all is tangent with the interior diapire of blown down tank 22 with the upper end of feed pulley 23, stabilizer 26 guarantees that the circuit board can be accurate from blown down tank 22 roll-off, the lower extreme of workbin 4 articulates there is feed pulley 23, the positive fixedly connected with pay-off motor 24 of workbin 4, the output of pay-off motor 24 and the front end fixed connection of feed pulley 23.
When the circuit board detection device is used, a circuit board to be detected is placed in the blanking box 4, the feeding motor 24 is started to drive the feeding wheel 23 to rotate, the circuit board in the blanking box 4 is moved to the material platform 3 through the discharging groove 22, then the working motor 32 is started to drive the bidirectional screw rod 15 to rotate, the threaded plate 14 moves up and down through being meshed with the bidirectional screw rod 15, then the movable box 7 is moved up and down through the vertical rod 19, when the movable box 7 drives the pressing plate 12 to move downwards, the threaded plate 14 pushes the material platform 3 downwards through the pushing frame 21, so that the supporting column 6 supports the leftmost circuit board, when the movable box 7 moves downwards, the pressing plate 12 is pushed by the pressure spring 13 to apply pressure to the circuit board, if the circuit board is not broken, the pressure spring 13 is gradually compressed, because one surface of the cavity 9 is inclined, when the ridge rod 10 moves relative to the movable box 7, the pressing plate 12 is driven by the pressure spring 11 to gradually move towards the movable box 7, when the pressing plate 12 is separated from the electric board and moves to the lower part of the electric board under the push of the pressure spring 13, when the movable box 7 is reset upwards, the pressing plate 12 is U-shaped, the unbroken circuit board can be stably supported upwards, because one side of the movable box 7 is convex, the rotating rod 18 can be pushed to rotate through the bent rod 20, the inclined plate 16 is driven to rotate, the circuit board can move to the upper part of the inclined plate 16, when the bent rod 20 is separated from the range of the rotating rod 18, the inclined plate 16 is reset under the elastic hinge action, when the pressing plate 12 drives the circuit board to move downwards again, the circuit board slides into the material receiving box 31 due to the support of the inclined plate 16, if the pressing plate 12 is pressed downwards to break the circuit board, the supporting column 6 can not stably support the circuit board, the circuit board falls onto the supporting platform 1, thereby the circuit board meeting the conditions and the circuit boards not meeting the conditions can be separately placed, the circuit boards are convenient to collect and classify.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a special circuit board bending resistance test machine, includes brace table (1) and upper ledge (2), its characterized in that: the lower end of the upper frame (2) is fixedly connected with the upper surface of the supporting table (1), a material table (3) is arranged between the upper frame (2) and the supporting table (1), the right side surface of the material table (3) is fixedly connected with a blanking box (4), the bottom surface of the material table (3) is fixedly connected with four supporting telescopic rods (5), the lower ends of the supporting telescopic rods (5) are fixedly connected with the upper surface of the supporting table (1), a supporting column (6) penetrates through the upper surface of the left end of the material table (3) in a sliding manner, the lower end of the supporting column (6) is fixedly connected with the upper surface of the supporting table (1), movable boxes (7) are arranged on the front side and the rear side of the left end of the material table (3), a cavity (9) is formed in the movable boxes (7), a sliding plate (8) is inserted in the cavity (9) in a sliding manner, a ridge rod (10) is arranged in the movable boxes (7), and the sliding plate (8) is sleeved on the outer surface of the ridge rod (10) in a sliding manner, one end, located outside the movable box (7), of each ridge rod (10) is fixedly connected with a pressing plate (12), the other end of each ridge rod (10) is movably sleeved with a pushing spring (11), one end of each pushing spring (11) is fixedly connected with the sliding plate (8), one end, far away from the material table (3), of each pushing spring (11) is fixedly connected with the ridge rod (10), the upper surface of the sliding plate (8) is fixedly connected with a pressure spring (13), and the upper end of each pressure spring (13) is fixedly connected with the inner top wall of the cavity (9);
a thread plate (14) is arranged above the upper frame (2), a bidirectional screw rod (15) penetrates through the upper surface thread of the thread plate (14), a working motor (32) is fixedly connected to the upper surface of the upper frame (2), the output end of the working motor (32) is fixedly connected with the bottom surface of the bidirectional screw rod (15), a material receiving box (31) is fixedly connected to the left side of the material platform (3) on the upper surface of the supporting table (1), an inclined plate (16) is arranged between the two pressing plates (12) above the supporting column (6), a bending plate (17) is fixedly connected to the bottom surface of the upper end of the upper frame (2), the right end of the inclined plate (16) is elastically hinged to the lower end of the bending plate (17), rotating rods (18) are arranged on the front side and the rear side of the bending plate (17), the right ends of the two rotating rods (18) are fixedly connected with the inclined plate (16), a vertical rod (19) is fixedly connected to the upper surface of the movable box (7), the upper end of a vertical rod (19) penetrates through the bottom surface of the upper frame (2) in a sliding mode, the upper end surface of the vertical rod (19) is fixedly connected with the bottom surface of a threaded plate (14), the right side surface of the movable box (7) is hinged with a bent rod (20), the right side surface of the threaded plate (14) is fixedly connected with two pushing frames (21), and the material platform (3) is located below the pushing frames (21);
the left side face of the blanking box (4) is provided with a discharging groove (22) communicated with the inside, the lower end of the blanking box (4) is hinged with a feeding wheel (23), the front face of the blanking box (4) is fixedly connected with a feeding motor (24), and the output end of the feeding motor (24) is fixedly connected with the front end of the feeding wheel (23).
2. The special circuit board bending resistance testing machine of claim 1, wherein: the upper surface of material platform (3) is located the front and back both sides of support column (6) and all articulates there is a plurality of gyro wheel (25), and the upper end of gyro wheel (25) is tangent with the inner bottom wall of blown down tank (22).
3. The special circuit board bending resistance testing machine of claim 2, wherein: the inside left and right sides that is located feed wheel (23) of workbin (4) all articulates there is stabilizer (26), and the upper end of stabilizer (26) and feed wheel (23) all is tangent with the interior diapire of blown down tank (22).
4. The special circuit board bending resistance testing machine of claim 1, wherein: two parallel frames (27) are arranged above the material table (3), the lower ends of the two parallel frames (27) are respectively fixedly connected with the front surface and the back surface of the material table (3), a positioning frame (28) is arranged above the parallel frames (27), and the lower end of the positioning frame (28) is fixedly connected with the upper surface of the supporting table (1).
5. The special circuit board bending resistance testing machine of claim 1, wherein: one end of each edge rod (10) located inside the cavity (9) is hinged with a pulley (29), and one surface of the cavity (9) in contact with the pulley (29) is an inclined surface.
6. The special circuit board bending resistance testing machine of claim 1, wherein: the pressure spring (13) is internally provided with a limiting rod (30), the upper end and the lower end of the limiting rod (30) are fixedly connected with the inner walls of the upper side and the lower side of the cavity (9) respectively, the sliding plate (8) is sleeved on the outer surface of the limiting rod (30) in a sliding mode, and the pressing plate (12) is U-shaped.
7. The special circuit board bending resistance testing machine of claim 1, wherein: the shape of the bent rod (20) is L-shaped, and the side surface of the movable box (7) is positioned below the bent rod (20) and is convex.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111331496.7A CN114034578B (en) | 2021-11-11 | 2021-11-11 | Special circuit board bending resistance testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111331496.7A CN114034578B (en) | 2021-11-11 | 2021-11-11 | Special circuit board bending resistance testing machine |
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| CN114034578A true CN114034578A (en) | 2022-02-11 |
| CN114034578B CN114034578B (en) | 2024-05-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114942192A (en) * | 2022-05-30 | 2022-08-26 | 赋桦科技(深圳)有限公司 | Automatic detection device for PCB pressure test |
| CN115824830A (en) * | 2022-12-01 | 2023-03-21 | 贵州顺康检测股份有限公司 | Equipment for detecting resistance of road pavement |
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