CN112697610A - Circuit board receives torsional force check out test set - Google Patents
Circuit board receives torsional force check out test set Download PDFInfo
- Publication number
- CN112697610A CN112697610A CN202110025636.1A CN202110025636A CN112697610A CN 112697610 A CN112697610 A CN 112697610A CN 202110025636 A CN202110025636 A CN 202110025636A CN 112697610 A CN112697610 A CN 112697610A
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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
- G01N3/22—Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional 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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- 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
- G01N3/26—Investigating twisting or coiling properties
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0021—Torsional
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Abstract
The invention discloses a device for detecting the torsional force of a circuit board, which comprises a case, wherein an elevating mechanism is arranged in the case, the elevating mechanism comprises a detection cavity with an upward opening arranged in the case, a motor cavity is arranged in the inner wall of the lower side of the detection cavity, a transmission mechanism is arranged in the case, the transmission mechanism comprises working cavities arranged in the inner wall of the left side and the inner wall of the right side of the detection cavity, and a moving cavity with an upward opening is arranged in the inner wall of the lower side of the working cavity.
Description
Technical Field
The invention relates to the field of circuit boards, in particular to a device for detecting torsional force of a circuit board.
Background
The circuit board makes the circuit miniaturisation, it is visual, play an important role in the batch production of fixed circuit and the optimization with electrical apparatus overall arrangement, the circuit board can be called printed wiring board or printed circuit board, the circuit board in the use, need bear the pressure of all directions and fix the gravity of electronic component on the circuit board, if the physical properties of circuit board itself is relatively poor, then probably after using a period, the fracture takes place, make the machine can not normally work, because electronic component can't evenly distributed on the circuit board, so the circuit board can receive certain torsional force after installing electronic component, if can't know its torsion limit, then can not use the circuit board well.
Disclosure of Invention
The invention aims to provide a device for detecting torsional force applied to a circuit board, which solves the problems that electronic elements need to be placed on the circuit board, the circuit board can be subjected to certain torsional force and the like.
The invention is realized by the following technical scheme.
The invention discloses a device for detecting torsional force of a circuit board, which comprises a case, wherein an elevating mechanism is arranged in the case, the elevating mechanism comprises a detection cavity which is arranged in the case and provided with an upward opening, a motor cavity is arranged in the inner wall of the lower side of the detection cavity, a motor is fixedly arranged on the inner wall of the lower side of the motor cavity, a motor shaft is rotatably arranged on the upper end surface of the motor, a spline is arranged on the motor shaft, an accommodating frame and a driving gear are sequentially arranged on the spline from top to bottom in a vertically movable mode, a limiting groove with an upward opening is arranged on the upper end surface of the driving gear, a limiting block is rotatably arranged in the limiting groove, a connecting arm is fixedly arranged on the upper end surface of the limiting block, a vertical rod is fixedly connected between the lower end surface of the accommodating frame and the upper end surface of the driving gear, an accommodating cavity is arranged in the accommodating cavity, a The inner wall of the upper side of the motor cavity is provided with a connecting groove with a downward opening, a driving shaft is rotationally arranged in the connecting groove, a connecting torsion spring is arranged between the driving shaft and the connecting groove, the front end face and the rear end face of the driving shaft are fixedly provided with rotating rods, the lower end face of the driving shaft is provided with a storage cavity with a downward opening, and a friction ring is fixedly arranged in the storage cavity;
the machine case is internally provided with a transmission mechanism, the transmission mechanism comprises a working cavity arranged in the left inner wall and the right inner wall of the detection cavity, the lower inner wall of the working cavity is provided with a moving cavity with an upward opening, the inner wall of one side of the working cavity, which is close to the detection cavity, is rotatably provided with a contact shaft, a material placing block is fixedly arranged on the contact shaft and can rotate in the detection cavity, the end surface of the material placing block, which is far away from the working cavity, is fixedly provided with a fixed block, the end surface of the material placing block, which is far away from the working cavity, is provided with a telescopic cavity, a clamping block can vertically move in the telescopic cavity, a telescopic spring is connected between the lower end surface of the clamping block and the lower inner wall of the telescopic cavity, the lower end surface of the clamping block is connected with a thin rope, the end surface of the clamping block, which is far, the circuit board may fall along the fixing block.
Further, it is equipped with the ascending bearing groove of opening to detect chamber downside inner wall bilateral symmetry, the bearing inslot can reciprocate and be equipped with the lifter, under the lifter terminal surface with be connected with the bearing spring between bearing groove downside inner wall, the fixed thing board that carries that is equipped with of lifter up end, carry the fixed atress pole that is equipped with of terminal surface bilateral symmetry under the thing board, the atress pole is close to the fixed catch bar that is equipped with of terminal surface of motor, the fixed linking arm that is equipped with of terminal surface under the catch bar, motor chamber downside inner wall bilateral symmetry rotates and is equipped with the driven shaft, from last drive gear and the driving pulley of down fixing in proper order of being equipped with on the driven shaft, around there being the belt on the driving pulley.
Furthermore, a stress bevel gear is fixedly arranged on the contact shaft and can rotate in the working cavity, a sliding groove is arranged on the contact shaft, a driving ring is arranged on the sliding groove and can move left and right, a moving groove is arranged on the driving ring in a left-right through manner, a limiting groove is arranged on the outer wall of the driving ring, a transmission block is arranged in the limiting groove in a rotating manner, a connecting rod is fixedly arranged on the lower end face of the transmission block, a pushing plate is fixedly arranged on the end face of the connecting rod close to the motor, a contact cavity is arranged in the inner wall of the lower side of the working cavity, a stress shaft is arranged on the inner wall of the lower side of the working cavity in a rotating manner and extends into the contact cavity, a transmission bevel gear is fixedly arranged on the stress shaft and can rotate in the working cavity, a driven friction wheel is fixedly arranged on the stress shaft and can rotate in the contact cavity, contact chamber downside inner wall and rotate and be equipped with the vertical axis, from last down fixed initiative friction pulley and the driven pulleys of being equipped with in proper order on the vertical axis, the last belt that winds of driven pulleys.
Furthermore, a connecting shaft is arranged on the inner wall of the left side of the working cavity in a rotating mode, a driven bevel gear is fixedly arranged on the connecting shaft and can rotate in the working cavity, a pointer is fixedly arranged on the connecting shaft and is arranged on the left side of the case, and the pointer is in a vertical state.
Further, after the driving shaft rotates ninety degrees, the elastic force of the connecting torsion spring is larger than the friction force between the driving block and the friction ring.
The invention has the beneficial effects that: this device can be through the pinch-off blades that reciprocates, through the distance that reduces between pinch-off blades and the fixed block, make the circuit board place on the fixed block, can carry out the rotation of certain angle, put the thing piece through two rotation direction differences and twist reverse the circuit board, after the circuit board breaks off, the circuit board drops downwards and carries thing board up end, it receives gravity downstream to carry the thing board, make through a series of transmissions and put thing board stall, the user can rotate the turned angle of pointer simultaneously, rotate cracked angle to the circuit board and calculate.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the embodiment of the present invention at A in FIG. 1;
FIG. 3 is an enlarged schematic view of the embodiment of the present invention at B in FIG. 1;
FIG. 4 is a schematic structural diagram at C-C in FIG. 2 according to an embodiment of the present invention.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The detection device for the torsional force of the circuit board is described by combining the attached drawings 1-4, and comprises a case 25, wherein an elevating mechanism 80 is arranged in the case 25, the elevating mechanism 80 comprises a detection chamber 66 with an upward opening in the case 25, a motor chamber 38 is arranged in the inner wall of the lower side of the detection chamber 66, a motor 36 is fixedly arranged on the inner wall of the lower side of the motor chamber 38, a motor shaft 70 is rotatably arranged on the upper end surface of the motor 36, a spline 46 is arranged on the motor shaft 70, an accommodating frame 47 and a driving gear 60 are sequentially arranged on the spline 46 from top to bottom in a movable manner, a limiting groove 59 with an upward opening is arranged on the upper end surface of the driving gear 60, a limiting block 42 is rotatably arranged in the limiting groove 59, a connecting arm 43 is fixedly arranged on the upper end surface of the limiting block 42, and a vertical rod 58 is fixedly, the storage box 47 is internally provided with a storage cavity 48, the storage cavity 48 is internally provided with a movable block 56 in a left-and-right movement manner, the movable block 56 is close to the end face of the motor shaft 70 and the inner wall of the storage cavity 48 close to the motor shaft 70, a return spring 57 is connected between the inner walls, the upper side inner wall of the motor cavity 38 is provided with a connecting groove 52 with a downward opening, a movable shaft 50 is arranged in the connecting groove 52 in a rotating manner, a connecting torsion spring 51 is arranged between the movable shaft 50 and the connecting groove 52, a rotating rod 53 is fixedly arranged on the front end face and the rear end face of the movable shaft 50, a storage cavity 54 with a downward opening is arranged on the lower end face of the movable shaft 50, a friction ring 49 is fixedly arranged in the storage cavity 54, a transmission mechanism 81 is arranged in the case 25 and comprises a working cavity 26 arranged in the left inner wall and the right inner wall of the detection, working chamber 26 is close to one side inner wall rotation that detects chamber 66 is equipped with contact shaft 20, contact shaft 20 goes up the fixed thing piece 29 of putting that is equipped with, it can to put thing piece 29 detect the interior rotation of chamber 66, it keeps away from to put thing piece 29 the fixed block 32 that is equipped with of terminal surface of working chamber 26, it keeps away from to put thing piece 29 the terminal surface of working chamber 26 is equipped with flexible chamber 31, can reciprocate in the flexible chamber 31 and be equipped with and press from both sides tight piece 28, press from both sides under the tight piece 28 terminal surface with be connected with expanding spring 30 between flexible chamber 31 downside inner wall, press from both sides the terminal surface under the tight piece 28 and be connected with string 65, press from both sides tight piece 28 and keep away from the fixed clamp plate 27 that is equipped with of terminal surface of working chamber 26, fixed block 32 is the inclined plane, after.
Beneficially, it is equipped with ascending bearing groove 33 of opening to detect 66 downside inner wall bilateral symmetry in chamber, can reciprocate in the bearing groove 33 and be equipped with lifter 39, lifter 39 lower terminal surface with be connected with bearing spring 40 between the lower side inner wall of bearing groove 33, lifter 39 up end is fixed to be equipped with carries thing board 69, carry thing board 69 lower terminal surface bilateral symmetry fixed and be equipped with atress pole 45, atress pole 45 is close to the end-fixing of motor 36 is equipped with catch bar 44, end-fixing is equipped with under the catch bar 44 linking arm 43, motor chamber 38 downside inner wall bilateral symmetry rotates and is equipped with driven shaft 34, driven shaft 34 is last down fixed drive gear 37 and the driving pulley 35 of being equipped with in proper order, around there being belt 10 on the driving pulley 35.
Beneficially, the contact shaft 20 is fixedly provided with a stressed bevel gear 21, the stressed bevel gear 21 can rotate in the working chamber 26, the contact shaft 20 is provided with a sliding groove 63, the sliding groove 63 is provided with a driving ring 61 capable of moving left and right, the driving ring 61 is provided with a moving groove 62 penetrating left and right, the outer wall of the driving ring 61 is provided with a limiting groove 64, a driving block 68 is rotatably provided in the limiting groove 64, the lower end face of the driving block 68 is fixedly provided with a connecting rod 16, the end face of the connecting rod 16 close to the motor 36 is fixedly provided with a pushing plate 41, the inner wall of the lower side of the working chamber 26 is provided with a contact chamber 15, the inner wall of the lower side of the working chamber 26 is rotatably provided with a stressed shaft 18, the stressed shaft 18 extends into the contact chamber 15, the stressed shaft 18 is fixedly provided with a transmission bevel gear 19, and the transmission bevel gear 19 can rotate in the working chamber 26, fixed driven friction pulley 14 that is equipped with on the atress axle 18, driven friction pulley 14 can rotate in the contact chamber 15, contact 15 downside inner walls of chamber and rotate and be equipped with vertical axis 12, from last down fixed initiative friction pulley 13 and the driven pulleys 11 of being equipped with in proper order on the vertical axis 12, around having on the driven pulleys 11 the belt 10.
Advantageously, a connecting shaft 23 is rotatably arranged on the inner wall of the left side of the working cavity 26, a driven bevel gear 24 is fixedly arranged on the connecting shaft 23, the driven bevel gear 24 can rotate in the working cavity 26, a pointer 22 is fixedly arranged on the connecting shaft 23, the pointer 22 is arranged on the left side of the case 25, and the pointer 22 is in a vertical state.
Advantageously, after the driving shaft 50 rotates ninety degrees, the elastic force of the connecting torsion spring 51 is greater than the friction force between the driving block 56 and the friction ring 49.
In the initial state, the return spring 57, the connecting torsion spring 51, the extension spring 30, and the load bearing spring 40 are in the normal state.
The circuit board is placed on the upper end surfaces of the two fixed blocks 32, when the circuit board is in a complete state, the circuit board does not fall off, the motor 36 is started, the motor 36 drives the motor shaft 70 to rotate, the motor shaft 70 drives the storage frame 47 to rotate, the storage frame 47 rotates to enable the driving block 56 to be far away from the motor shaft 70, the driving block 56 is far away from the motor shaft 70 and is contacted with the friction ring 49, the driving block 56 drives the driving shaft 50 to rotate through the friction ring 49, the driving shaft 50 drives the rotating rod 53 to rotate, the rotating rod 53 rotates to enable the two pushing plates 41 to be far away from each other, the pushing plates 41 drive the connecting rod 16 to move, the connecting rod 16 drives the driving block 68 to move, the driving block 68 drives the driving ring 61 to move, the driving ring 61 moves, the driving ring 61 tensions the string 65, the string 65 pulls the clamping block 28 to move downwards, the clamping block 28 pulls the clamping plate 27 to, the motor shaft 70 drives the driving gear 60 to rotate, the driving gear 60 drives the transmission gear 37 to rotate, the transmission gear 37 drives the driven shaft 34 to rotate, the driven shaft 34 drives the driving pulley 35 to rotate, the driving pulley 35 drives the driven pulley 11 to rotate through the belt 10, the driven pulley 11 drives the driving friction wheel 13 to rotate through the vertical shaft 12, the driving friction wheel 13 drives the driven friction wheel 14 to rotate through friction, the driven friction wheel 14 drives the transmission bevel gear 19 to rotate through the stressed shaft 18, the transmission bevel gear 19 is meshed to drive the stressed bevel gear 21 to rotate, the stressed bevel gear 21 drives the contact shaft 20 to rotate, the contact shaft 20 drives the article placing block 29 to rotate, the rotation directions of the two article placing blocks 29 are different, so that the circuit board is twisted, the stressed bevel gear 21 drives the driven bevel gear 24 to rotate, the driven bevel gear 24 drives the pointer 22 to rotate through the connecting shaft 23, carry thing board 69 and receive the heavy downstream, it drives the downstream of atress pole 45 to carry thing board 69, atress pole 45 drives linking arm 43 downstream through catch bar 44, linking arm 43 drives restriction piece 42 downstream, restriction piece 42 drives driving gear 60 downstream, driving gear 60 downstream is disengaged with drive gear 37, it drives through montant 58 to carry thing board 69 and accomodates frame 47 downstream, accomodate frame 47 and drive piece 56 downstream, it does not contact with friction ring 49 to drive piece 56, expanding spring 30 promotes clamp piece 28 upward movement, the user can be through observing pointer 22 pivoted angle, calculate circuit board torsional fracture's angle.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a circuit board receives torsional force check out test set, includes quick-witted case, its characterized in that: the lifting mechanism is arranged in the machine case and comprises a detection cavity which is arranged in the machine case and has an upward opening, a motor cavity is arranged in the inner wall of the lower side of the detection cavity, a motor is fixedly arranged on the inner wall of the lower side of the motor cavity, a motor shaft is rotatably arranged on the upper end surface of the motor, a spline is arranged on the motor shaft, a containing frame and a driving gear are sequentially arranged on the spline from top to bottom in a vertically movable mode, a limiting groove with an upward opening is arranged on the upper end surface of the driving gear, a limiting block is rotatably arranged in the limiting groove, a connecting arm is fixedly arranged on the upper end surface of the limiting block, a vertical rod is fixedly connected between the lower end surface of the containing frame and the upper end surface of the driving gear, a containing cavity is arranged in the containing frame, a driving block is arranged in the containing cavity and, the inner wall of the upper side of the motor cavity is provided with a connecting groove with a downward opening, a driving shaft is rotationally arranged in the connecting groove, a connecting torsion spring is arranged between the driving shaft and the connecting groove, a rotating rod is fixedly arranged on the front end face and the rear end face of the driving shaft, an object placing cavity with a downward opening is arranged on the lower end face of the driving shaft, and a friction ring is fixedly arranged in the object placing cavity;
the machine case is internally provided with a transmission mechanism, the transmission mechanism comprises a working cavity arranged in the left inner wall and the right inner wall of the detection cavity, the lower inner wall of the working cavity is provided with a moving cavity with an upward opening, the inner wall of one side of the working cavity, which is close to the detection cavity, is rotatably provided with a contact shaft, a material placing block is fixedly arranged on the contact shaft and can rotate in the detection cavity, the end surface of the material placing block, which is far away from the working cavity, is fixedly provided with a fixed block, the end surface of the material placing block, which is far away from the working cavity, is provided with a telescopic cavity, a clamping block can vertically move in the telescopic cavity, a telescopic spring is connected between the lower end surface of the clamping block and the lower inner wall of the telescopic cavity, the lower end surface of the clamping block is connected with a thin rope, the end surface of the clamping block, which is far, the circuit board may fall along the fixing block.
2. A circuit board torsional force detection apparatus according to claim 1, wherein: it is equipped with the ascending bearing groove of opening to detect chamber downside inner wall bilateral symmetry, the bearing inslot can reciprocate and be equipped with the lifter, under the lifter terminal surface with be connected with the bearing spring between bearing groove downside inner wall, the fixed thing board that carries that is equipped with of lifter up end, carry the fixed atress pole that is equipped with of terminal surface bilateral symmetry under the thing board, the atress pole is close to the fixed catch bar that is equipped with of terminal surface of motor, the fixed linking arm that is equipped with of terminal surface under the catch bar, motor chamber downside inner wall bilateral symmetry rotates and is equipped with the driven shaft, from last drive gear and the driving pulley of down fixing in proper order of being equipped with on the driven shaft, around there being the belt on the driving pulley.
3. A circuit board torsional force detection apparatus according to claim 2, wherein: the contact shaft is fixedly provided with a stressed bevel gear, the stressed bevel gear can rotate in the working chamber, the contact shaft is provided with a sliding groove, the sliding groove is provided with a driving ring which can move left and right, the driving ring is provided with a moving groove which is communicated with the driving ring left and right, the outer wall of the driving ring is provided with a limiting groove, a driving block is rotatably arranged in the limiting groove, the lower end surface of the driving block is fixedly provided with a connecting rod, the connecting rod is close to the end surface of the motor and is fixedly provided with a push plate, the inner wall of the lower side of the working chamber is provided with a contact chamber, the inner wall of the lower side of the working chamber is rotatably provided with a stressed shaft, the stressed shaft extends into the contact chamber, the stressed shaft is fixedly provided with a transmission bevel gear, the transmission bevel gear can rotate in the working chamber, the stressed shaft is fixedly provided with a driven friction wheel, and the, contact chamber downside inner wall and rotate and be equipped with the vertical axis, from last down fixed initiative friction pulley and the driven pulleys of being equipped with in proper order on the vertical axis, the last belt that winds of driven pulleys.
4. A circuit board torsional force detection apparatus according to claim 3, wherein: the left side the inner wall of working chamber left side rotates and is equipped with the connecting axle, the fixed driven bevel gear that is equipped with on the connecting axle, driven bevel gear can rotate in the working chamber, the fixed pointer that is equipped with on the connecting axle, the pointer sets up machine case left side, the pointer is in vertical state.
5. A circuit board torsional force detection apparatus according to claim 4, wherein: after the driving shaft rotates ninety degrees, the elastic force of the connecting torsion spring is greater than the friction force between the driving block and the friction ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110025636.1A CN112697610A (en) | 2021-01-08 | 2021-01-08 | Circuit board receives torsional force check out test set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110025636.1A CN112697610A (en) | 2021-01-08 | 2021-01-08 | Circuit board receives torsional force check out test set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112697610A true CN112697610A (en) | 2021-04-23 |
Family
ID=75513508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110025636.1A Withdrawn CN112697610A (en) | 2021-01-08 | 2021-01-08 | Circuit board receives torsional force check out test set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112697610A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113494879A (en) * | 2021-09-09 | 2021-10-12 | 新沂市凯宁工具有限公司 | Factory detection equipment for woodworking drill bit |
| CN114509352A (en) * | 2022-01-20 | 2022-05-17 | 江苏珍鹿纺织有限公司 | Textile bending-resistant and torsion-resistant characteristic testing device |
| CN116124571A (en) * | 2022-11-18 | 2023-05-16 | 濮阳市邦士电子科技有限公司 | Printed circuit board pull-out strength tester |
| CN116539452A (en) * | 2023-07-07 | 2023-08-04 | 深圳市微特精密科技股份有限公司 | PCB separating and circulating detection device and detection method |
| CN117110056A (en) * | 2023-10-25 | 2023-11-24 | 深圳市华旭达精密电路科技有限公司 | Circuit board strength detection device |
-
2021
- 2021-01-08 CN CN202110025636.1A patent/CN112697610A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113494879A (en) * | 2021-09-09 | 2021-10-12 | 新沂市凯宁工具有限公司 | Factory detection equipment for woodworking drill bit |
| CN114509352A (en) * | 2022-01-20 | 2022-05-17 | 江苏珍鹿纺织有限公司 | Textile bending-resistant and torsion-resistant characteristic testing device |
| CN114509352B (en) * | 2022-01-20 | 2023-11-07 | 江苏珍鹿纺织有限公司 | Textile bending and torsion resistance characteristic testing device |
| CN116124571A (en) * | 2022-11-18 | 2023-05-16 | 濮阳市邦士电子科技有限公司 | Printed circuit board pull-out strength tester |
| CN116124571B (en) * | 2022-11-18 | 2024-02-09 | 北京聚仪共享科技有限公司 | Printed circuit board pull-out strength tester |
| CN116539452A (en) * | 2023-07-07 | 2023-08-04 | 深圳市微特精密科技股份有限公司 | PCB separating and circulating detection device and detection method |
| CN116539452B (en) * | 2023-07-07 | 2023-09-22 | 深圳市微特精密科技股份有限公司 | PCB separating and circulating detection device and detection method |
| CN117110056A (en) * | 2023-10-25 | 2023-11-24 | 深圳市华旭达精密电路科技有限公司 | Circuit board strength detection device |
| CN117110056B (en) * | 2023-10-25 | 2023-12-26 | 深圳市华旭达精密电路科技有限公司 | Circuit board strength detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210423 |