CN115072343B - Clamping device for testing integrated circuit board - Google Patents
Clamping device for testing integrated circuit board Download PDFInfo
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- CN115072343B CN115072343B CN202210696950.7A CN202210696950A CN115072343B CN 115072343 B CN115072343 B CN 115072343B CN 202210696950 A CN202210696950 A CN 202210696950A CN 115072343 B CN115072343 B CN 115072343B
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- rod body
- clamping
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- rod
- circuit board
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/24—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles
- B65G47/248—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles by turning over or inverting them
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G49/00—Conveying systems characterised by their application for specified purposes not otherwise provided for
- B65G49/05—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles
- B65G49/07—Conveying systems characterised by their application for specified purposes not otherwise provided for for fragile or damageable materials or articles for semiconductor wafers Not used, see H01L21/677
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
The invention discloses a clamping device for testing an integrated circuit board, which comprises a first cylinder body, a substrate, a clamping mechanism and a turnover mechanism, wherein the whole first cylinder body is horizontally arranged, one end of the first cylinder body is provided with an opening, and the substrate is rotatably arranged in the opening. The turnover mechanism comprises a second rod body, a second cylinder body and a turnover assembly, wherein the second rod body is inserted into the other end of the first cylinder body, two ends of the second cylinder body are respectively movably sleeved on the outer sides of the first rod body and the second rod body, the second rod body acts on the second cylinder body to drive the first rod body to rotate, the turnover assembly acts on the second cylinder body, the transmission between the second rod body and the first rod body is relieved, and an integrated circuit board clamped on a substrate can be driven to turn. When the integrated circuit board needs to be subjected to double-sided observation test, the dust collecting circuit board can be clamped and fixed and quick turn-over can be realized by arranging the first cylinder body, the base plate, the clamping mechanism and the turn-over mechanism, so that the double-sided observation test of the integrated circuit board is convenient, time and labor are saved, and the test efficiency is improved.
Description
Technical Field
The invention relates to the technical field of integrated circuit board production, in particular to a clamping device for integrated circuit board testing.
Background
The integrated circuit production and manufacture needs hundreds of main working procedures. The technical range covers the whole scale from microscopic to macroscopic, and a plurality of advanced technologies on the earth are embodied in the integrated circuit industry. Because of the precision of integrated circuit fabrication and the pursuit of cost and profit, in order to ensure the quality of the chip, the production process needs to be monitored in time in the whole production process, and for this purpose, after almost every main process is completed, the chip needs to be monitored for relevant process parameters so as to ensure the controllability of the product quality.
The testing method of the integrated circuit board mainly comprises manual visual inspection, online testing, functional testing, optical detection and the like. When manual observation is performed, the integrated circuit board has a small size and a complex structure, so that a professional observation instrument is also required for observing the circuit board. The portable video microscope is generally adopted for observation, and the video microscope camera is utilized to clearly see the microscopic structure of the circuit board. In this way, we can easily design and test the circuit board.
When the observation instrument is used for carrying out double-sided observation test on the integrated circuit board, the clamp is used for clamping and positioning the integrated circuit board to be tested, one surface of the integrated circuit board faces the video microscope camera of the observation instrument, after the surface is observed and tested, the integrated circuit board is taken down from the clamp, turned to the other surface of the integrated circuit board, and clamped on the clamp again for observing and testing the other surface of the integrated circuit board.
Disclosure of Invention
The clamping device for testing the integrated circuit board is used for solving the technical problems that the operation is complex, the time and the labor are consumed, the operation is inconvenient and the testing efficiency is low when the integrated circuit board is subjected to double-sided observation test in the prior art.
The invention is realized by adopting the following technical scheme: the clamping device for testing the integrated circuit board comprises a first cylinder body, a base plate, a clamping mechanism and a turnover mechanism, wherein the whole first cylinder body is horizontally arranged, one end of the first cylinder body is provided with an opening, and the base plate is rotatably arranged in the opening;
the clamping mechanism is arranged on the base plate and comprises two clamping plates, a first rod body and a transmission assembly, a clamping space for clamping and fixing the integrated circuit board is formed between the two clamping plates, the first rod body is inserted into one side of the base plate, which is positioned in the first cylinder, and is positioned in the axial direction of the first cylinder, and the first rod body acts on the transmission assembly to adjust the clamping distance between the two clamping plates;
the turnover mechanism comprises a second rod body, a second cylinder body and a turnover assembly, wherein the second rod body is inserted into the other end of the first cylinder body, two ends of the second cylinder body are respectively movably sleeved on the outer sides of the first rod body and the second rod body, the second rod body acts on the second cylinder body to drive the first rod body to rotate, the turnover assembly acts on the second cylinder body to release transmission between the second rod body and the first rod body, and the integrated circuit board clamped on the substrate can be driven to turn over and rotate.
As a further improvement of the scheme, the transmission assembly comprises two movable plates, two screw rods, two first bevel gears and second bevel gears, wherein the two movable plates are oppositely arranged on the opposite sides of the two clamping plates, each movable plate is elastically connected with the adjacent clamping plates through a connecting rod, the two screw rods are oppositely inserted in the substrate in a straight shape, one ends of the two movable plates are respectively sleeved on the outer sides of the two screw rods in a threaded mode, the two first bevel gears are fixed on the close ends of the two screw rods, one end of the first rod body extends into the substrate and is fixedly provided with the second bevel gears, and the second bevel gears are located between the two first bevel gears and meshed with the two first bevel gears.
As a further improvement of the scheme, a radial groove for inserting the movable plate is formed in the base plate, a first limit groove is formed in the bottom of the radial groove, a first limit block is arranged in the first limit groove, and the first limit block is fixedly connected with the movable plate.
As a further improvement of the scheme, two track blocks which are mutually horizontal are oppositely arranged on the inner peripheral side of the first cylinder body, and track grooves matched with the track blocks in a sliding clamping manner are formed in two sides of the base plate.
As a further improvement of the scheme, a second clamping bead is elastically arranged on one side of the track block, which faces the center of the first cylinder, and two second bead grooves matched with the second clamping bead are formed in the inner wall of the track groove relatively.
As a further improvement of the scheme, a second limit groove is axially formed in the outer side of the second cylinder body, and a first fixed shaft which is in sliding plug fit with the second limit groove is radially arranged in the outer side of the first rod body; a second dead axle is radially arranged on the outer side of the second rod body, a fourth limit groove with a notch facing one side of the second rod body and matched with the second dead axle in a sliding plug-in manner is arranged on the second cylinder body,
when the second rod body drives the first rod body to rotate, the first fixed shaft is positioned at one end, close to the first rod body, of the second limiting groove, and the second fixed shaft is positioned at one end, close to the first rod body, of the fourth limiting groove.
As a further improvement of the scheme, the outer side of the first rod body is sleeved with a fixed sleeve, the outer side of the first rod body is sleeved with a sliding sleeve in rotary extrusion fit with the second cylinder body in a sliding manner, the sliding sleeve is positioned between the fixed sleeve and the second cylinder body, the outer side of the first rod body is sleeved with a first spring, and two ends of the first spring are respectively connected to corresponding outer walls of the sliding sleeve and the fixed sleeve;
when the second rod body drives the first rod body to rotate, the sliding sleeve always extrudes the second cylinder body through the elasticity of the first spring.
As a further improvement of the scheme, the turnover assembly comprises a third rod body which is inserted on the first cylinder body and is parallel to the second rod body,
the outer side of the second cylinder body is sleeved and fixed with a first disc, a fifth annular limit groove is circumferentially formed in the disc body of the first disc, a limit sleeve is slidably clamped in the fifth limit groove, a third rod body is fixedly inserted on the limit sleeve and can drive the first disc to axially move through the limit sleeve,
a first clamping block is arranged at one end of the third rod body, which is close to the base plate, a first clamping groove matched with the first clamping block is arranged on the base plate,
a fourth rod body perpendicular to the axis of the third rod body is sleeved and fixed on the third rod body, one end of the fourth rod body is sleeved and arranged on the outer side of the second rod body,
when the first clamping block is positioned outside the first clamping groove, the second rod body can rotate relative to the fourth rod body, and when the first clamping block is clamped into the first clamping groove, the second rod body can drive the third rod body to synchronously rotate through the fourth rod body.
As a further improvement of the scheme, an annular groove is circumferentially formed in the outer wall of the second rod body, a third cylinder body is rotatably sleeved outside the annular groove, a plurality of first bead grooves are circumferentially formed in the outer side of the third cylinder body in sequence, a cylinder slot is formed in the fourth rod body, the third cylinder body is rotatably inserted in the cylinder slot, first clamping beads matched with the first bead grooves are elastically arranged on the wall of the cylinder slot, first bead grooves matched with the first clamping beads are formed in the second rod body, and the first bead grooves are located on one side, close to the second cylinder body, of the annular groove.
As a further improvement of the above, the static friction force between the first rod body and the base plate wall is greater than the static friction force between the screw rod and the base plate inner wall.
The beneficial effects of the invention are as follows:
according to the clamping device for testing the integrated circuit board, when the integrated circuit board is required to be subjected to double-sided observation and test, the dust collection circuit board can be clamped and fixed and quick turn-over is realized by arranging the first cylinder body, the base plate, the clamping mechanism and the turn-over mechanism, so that the double-sided observation and test of the integrated circuit board are convenient, time and labor are saved, and the test efficiency is improved.
According to the clamping device for testing the integrated circuit board, the second barrel, the first fixed shaft, the second limiting groove and the fourth limiting groove can conveniently realize the rapid switching between the independent rotation state of the second rod body and the state that the second rod body drives the first rod body by using the second barrel, so that the clamping operation or the turning operation of the device on the integrated circuit board can be conveniently switched.
Drawings
Fig. 1 is a schematic front view of a clamping device for testing an integrated circuit board according to embodiment 1 of the present invention;
FIG. 2 is a schematic rear view of the clamping device for testing the integrated circuit board in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the clamping device for testing an integrated circuit board in FIG. 2;
FIG. 4 is a schematic view of a portion of the structure of FIG. 3;
FIG. 5 is a schematic cross-sectional view of the first rod and the second rod of FIG. 4 mounted at two ends of the second cylinder;
FIG. 6 is a schematic view of the structure of FIG. 4 after being cut, spread and spread along the axis of the outer wall of the second cylinder;
FIG. 7 is a schematic side view of the first disk of FIG. 4, adjacent to a substrate;
FIG. 8 is an enlarged schematic view of the structure of FIG. 4A;
FIG. 9 is an enlarged schematic view of the structure of FIG. 3B;
FIG. 10 is a schematic cross-sectional view of the clamping device for testing an integrated circuit board in FIG. 3 in another state;
fig. 11 is a schematic cross-sectional view of the clamping device for testing an integrated circuit board in fig. 10 in another state.
Main symbol description:
1. an integrated circuit board; 2. a substrate; 3. a clamping plate; 4. a moving plate; 5. a screw rod; 6. a radial groove; 7. a first limiting block; 8. a first limit groove; 9. a first cylinder; 10. a first bevel gear; 11. a second bevel gear; 12. a first rod body; 13. a second rod body; 14. a second cylinder; 15. a first fixed shaft; 16. a second fixed shaft; 17. the second limit groove; 19. a fourth limit groove; 20. a sliding sleeve; 21. a fixed sleeve; 22. a third rod body; 23. a first clamping block; 24. a first clamping groove; 25. a first disc; 26. a fifth limit groove; 27. a limit sleeve; 28. a fourth rod body; 29. a cartridge slot; 30. a third cylinder; 31. a first bead groove; 32. a first clamping bead; 33. an annular groove; 34. a sixth limit groove; 35. a support base; 36. a track groove; 37. a track block; 38. a second clamping bead; 39. a second bead groove.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1 to 11, the clamping device for testing an integrated circuit board includes a first cylinder 9, a substrate 2, a clamping mechanism, and a flip-over mechanism. In this embodiment, a supporting seat 35 is installed at the bottom of the first cylinder 9 to be supported on the test stand.
The first cylinder 9 is horizontally disposed as a whole and has an opening (not shown) at one end and a closed end at the other end. The substrate 2 is rotatably disposed in the opening, and the substrate 2 is relatively rotatable in the opening to flip the integrated circuit board 1 mounted thereon. The turning rotation angle of the integrated circuit board 1 on the substrate 2 is 180 degrees, so that double-sided observation and test can be conveniently and rapidly carried out on the integrated circuit board 1.
The fixture sets up on base plate 2, and fixture includes two splint 3, first body of rod 12 and drive assembly, forms the centre gripping space that is used for centre gripping fixed integrated circuit board 1 between two splint 3, and the clamping face of two splint 3 all has the spill double-layered groove with integrated circuit board 1 siding looks adaptation in this embodiment, makes integrated circuit board 1 centre gripping more firm, and has laid flexible buffer layer (not shown) in this inslot to reduce the centre gripping damage to integrated circuit board 1 causes.
The first rod body 12 is inserted into one side of the substrate 2 located in the first cylinder 9, and is located in the axial direction of the first cylinder 9, and the first rod body 12 and the axis of the first cylinder 9 are concentrically arranged. The first rod body 12 acts on the transmission assembly to adjust the clamping distance between the two clamping plates 3, thereby completing clamping of the integrated circuit board 1 or releasing clamping of the integrated circuit board 1.
The turnover mechanism comprises a second rod body 13, a second cylinder 14 and a turnover assembly, wherein the second rod body 13 is inserted into the other end (closed end) of the first cylinder 9, and the second rod body 13 is coaxial with the first rod body 12. The two ends of the second cylinder 14 are movably sleeved outside the first cylinder 12 and the second cylinder 13 respectively, the second cylinder 13 acts on the second cylinder 14 to drive the first cylinder 12 to rotate, the turn-over assembly acts on the second cylinder 14 to release the transmission between the second cylinder 13 and the first cylinder 12, and the integrated circuit board 1 clamped on the base plate 2 can be driven to turn over and rotate so as to conveniently test the other surface of the integrated circuit board 1 continuously.
The transmission assembly comprises two movable plates 4, two screw rods 5, two first conical teeth 10 and two second conical teeth 11, wherein the two movable plates 4 are oppositely arranged on the separated sides of the two clamping plates 3, and each movable plate 4 is elastically connected with the adjacent clamping plate 3 through a connecting rod (not labeled) so as to drive the clamping plates 3 to synchronously move. In this embodiment, the connecting rod may be made of rubber material, so as to provide a certain buffering force for the clamping plate 3 to clamp the integrated circuit board 1.
The two lead screws 5 are oppositely inserted in the base plate 2 in a straight shape, one ends of the two moving plates 4 are respectively sleeved on the outer sides of the two lead screws 5 in a threaded mode, two first conical teeth 10 are fixed at the near ends of the two lead screws 5, one end of a first rod body 12 extends into the base plate 2 and is fixedly provided with a second conical tooth 11, and the second conical tooth 11 is located between the two first conical teeth 10 and meshed with the two first conical teeth 10.
The radial groove 6 for inserting the movable plate 4 is formed in the base plate 2, the first limiting groove 8 is formed in the groove bottom of the radial groove 6, the first limiting block 7 is arranged in the first limiting groove 8, the first limiting block 7 is fixedly connected with the movable plate 4, and the movable plate 4 can be limited to move axially on the screw rod 5 under the driving action of the screw threads of the screw rod 5 through the first limiting groove 8 and the first limiting block 7.
In this embodiment, when the first rod 12 rotates and drives the two first bevel gears 10 and the two screw rods 5 to rotate synchronously through the second bevel gears 11, the two screw rods 5 interact with the two moving plates 4 through threads, so that the two moving plates 4 move axially on the screw rods 5 under the limiting action between the respective first limiting blocks 7 and the first limiting grooves 8, so that the two moving plates 4 drive the two clamping plates 3 to approach each other or separate from each other, respectively, and the integrated circuit board 1 is clamped or the clamping fixation of the integrated circuit board 1 is released.
The inner circumference side of the first cylinder 9 is oppositely provided with two track blocks 37 which are mutually horizontal, and the two sides of the base plate 2 are respectively provided with a track groove 36 which is in sliding clamping fit with the track blocks 37. In this embodiment, the substrate 2 has a racetrack structure as a whole. The track grooves 36 are formed on the arcuate edges of the two ends of the base plate 2. The rotation of the base plate 2 in the opening of the first cylinder 9 is kept stable by the rail blocks 37 and the rail grooves 36.
The track block 37 is elastically provided with a second clamping bead 38 facing to one side of the center of the first cylinder 9, and two second bead grooves 39 matched with the second clamping bead 38 are oppositely formed in the inner wall of the track groove 36. In this embodiment, the track block 37 is provided with a receiving groove (not labeled), and a third spring (not labeled) is installed in the receiving groove and connected to the second clamping bead 38 through the third spring. When the substrate 2 is not rotated or after the substrate 2 is rotated 180 degrees, the substrate 2 can be clamped into the second bead groove 39 through the second clamping bead 38 to fix the position of the substrate 2, so that the integrated circuit board 1 on the substrate 2 is always kept in a horizontal state before and after the turnover surface, and the surface to be tested is observed and tested.
A second limiting groove 17 is axially formed in the outer side of the second cylinder 14. The first rod body 12 is radially provided with a first fixed shaft 15 which is in sliding plug-in fit with the second limit groove 17. The second fixed shaft 16 is radially arranged on the outer side of the second rod body 13. The second cylinder 14 is provided with a fourth limit groove 19 which faces one side of the second rod body 13 and is in sliding insertion fit with the second dead axle 16.
In this embodiment, when the second rod 13 drives the first rod 12 to rotate, the first fixed shaft 15 is located at one end of the second limiting groove 17 near the first rod 12, and the second fixed shaft 16 is located at one end of the fourth limiting groove 19 near the first rod 12, so that the second rod 13 and the first rod 12 form a motion synchronous whole through the second cylinder 14, that is, the second rod 13 drives the first rod 12 to rotate synchronously through the second cylinder 14, so as to indirectly adjust the clamping distance between the clamping plates 3.
The outer side of the first rod body 12 is sleeved with a fixed sleeve 21, the outer side of the first rod body 12 is sleeved with a sliding sleeve 20 in a sliding and extrusion fit with the second cylinder body 14, and the sliding sleeve 20 can move relatively in the axial direction of the first rod body 12. The side wall of the sliding sleeve 20 facing the second cylinder 14 can be in sliding contact with the corresponding cylinder wall of the second cylinder 14.
The sliding sleeve 20 is located between the fixed sleeve 21 and the second cylinder 14, and a first spring (not shown) is sleeved on the outer side of the first rod body 12, and two ends of the first spring are respectively connected to corresponding outer walls of the sliding sleeve 20 and the fixed sleeve 21.
In this embodiment, when the second rod 13 drives the first rod 12 to rotate, the sliding sleeve 20 always extrudes the second cylinder 14 through the elastic force of the first spring, so that the first fixed shaft 15 is always limited at one end, close to the first rod 12, in the second limiting groove 17, to ensure the stability of the movement synchronization of the first rod 12 and the second cylinder 14, in addition, the elastic force of the first spring always extrudes the second cylinder 14, so that the second fixed shaft 16 is always limited at one end, close to the first rod 12, in the fourth limiting groove 19, to ensure the stability of the movement synchronization of the second rod 13 and the second cylinder 14, thereby realizing the movement synchronization of the second rod 13, the second cylinder 14 and the first rod 12.
The turnover assembly comprises a third rod body 22 inserted on the first cylinder body 9 and parallel to the second rod body 13, in this embodiment, a sixth annular limiting groove 34 is formed on the closed end of the first cylinder body 9, and the rod body of the third rod body 22 penetrates through the sixth limiting groove 34 and can circumferentially move in the sixth limiting groove 34 and axially move in the sixth limiting groove 34.
The first disc 25 is sleeved and fixed on the outer side of the second cylinder 14, so that the first disc 25 and the second cylinder 14 rotate synchronously, a fifth annular limiting groove 26 is formed in the circumferential direction of the first disc 25, and a limiting sleeve 27 is arranged in the fifth limiting groove 26 in a sliding and clamping mode. When the first rod body 12 and the second rod body 13 drive the second cylinder 14 and the first rod body 12 to rotate, the second cylinder 14 can drive the first disc 25 to rotate, so that the first disc 25 rotates relative to the stop collar 27 and the third rod body 22 through the fifth stop slot 26. However, when the second rod 13 releases the driving of the second cylinder 14 and the first rod 12, the second rod 13 can drive the third rod 22 and the stop collar 27 to rotate synchronously through the fourth rod 28, so that the third rod 22 and the stop collar 27 can move in the fifth stop slot 26 of the first disc 25. The third rod body 22 is fixedly inserted on the limit sleeve 27, and because the limit sleeve 27 is slidably clamped in the fifth limit groove 26, the third rod body 22 can drive the first disc 25 to synchronously move in the axial direction through the limit sleeve 27 so as to change the relative positions of the first fixed shaft 15 in the second limit groove 17 and the second fixed shaft 16 in the fourth limit groove 19.
The third body of rod 22 is close to base plate 2 one end and is provided with first fixture block 23, offered on the base plate 2 with first fixture block 23 matched with first draw-in groove 24, through the joint cooperation between first fixture block 23 and the first draw-in groove 24, can realize the motion synchronization between third body of rod 22 and the base plate 2 to drive the integrated circuit board 1 between splint 3 on the base plate 2 and overturn in step.
The third rod 22 is sleeved and fixed with a fourth rod 28 perpendicular to the axis of the third rod 22, so that the fourth rod 28 and the third rod 22 move synchronously, and one end of the fourth rod 28 is sleeved outside the second rod 13.
In this embodiment, when the first rod 12, the second rod 13 and the second cylinder 14 move synchronously, the first fixed shaft 15 is located at one end of the second limiting groove 17 close to the substrate 2, the first clamping block 23 is located outside the first clamping groove 24, and the second rod 13 can rotate relative to the fourth rod 28, i.e. the rotation of the second rod 13 will not drive the fourth rod 28 to rotate along with the rotation of the second rod.
However, when the first clamping block 23 on the third rod 22 is pushed to be clamped into the first clamping groove 24 of the substrate 2, the third rod 22 drives the first disc 25 and the second cylinder 14 to move towards the substrate 2 through the limiting sleeve 27, so that the first fixed shaft 15 moves to the other end of the second limiting groove 17, the second fixed shaft 16 is separated from the fourth limiting groove 19, the transmission of the second rod 13 to the second cylinder 14 is released, and the second rod 13 cannot drive the first rod 12 to rotate through the second cylinder 14. Meanwhile, the third rod 22 drives the fourth rod 28 to move to a corresponding position in the axial direction of the second rod 13 towards the substrate 2 for transmission fixation, so that the second rod 13 can transmit the third rod 22 through the fourth rod 28 to drive the third rod 22 to synchronously rotate, wherein how to realize the transmission fixation of the fourth rod 28 on the second rod 13 is as follows:
in this embodiment, an annular groove 33 is circumferentially formed on the outer wall of the second rod body 13, a third cylinder 30 is rotatably sleeved outside the annular groove 33, and the third cylinder 30 can rotate in the annular groove 33. A plurality of first bead grooves 31 are formed in the outer side of the third cylinder body 30 in circumferential direction in sequence, a cylinder slot 29 is formed in the fourth rod body 28, the third cylinder body 30 is rotatably inserted into the cylinder slot 29, first clamping beads 32 matched with the first bead grooves 31 are elastically arranged on the wall of the cylinder slot 29, accommodating grooves (not marked) are formed in the wall of the cylinder slot 29, and second springs (not marked) are installed in the accommodating grooves and connected with the first clamping beads 32 through the second springs. The second rod 13 is provided with a first bead groove 31 matched with the first clamping bead 32, and the first bead groove 31 is positioned at one side of the annular groove 33 close to the second cylinder 14.
When the first rod body 12, the second rod body 13 and the second cylinder body 14 move synchronously, the fourth rod body 28 is sleeved on the outer side of the third cylinder body 30 through the cylinder slot 29, and the first clamping beads 32 and the first bead slots 31 are matched in a clamping way by the second springs, so that the fourth rod body 28 and the third cylinder body 30 are relatively fixed, the fourth rod body 28 and the third cylinder body 30 move synchronously, and the second rod body 13 can rotate relative to the fourth rod body 28 through the third cylinder body 30.
When the second rod 13 releases the driving of the second cylinder 14 and the first rod 12, the fourth rod 28 moves synchronously under the driving of the third rod 22, so that the first clamping bead 32 moves towards the substrate 2 and is pressed into the accommodating groove (compressed by the second spring) temporarily until the first clamping block 23 is clamped into the first clamping groove 24, the first clamping bead 32 corresponds to the first bead groove 31 at the corresponding position on the outer wall of the second rod 13 and is clamped into the first bead groove 31 under the action of the second spring force, so that the fourth rod 28 and the second rod 13 rotate synchronously, and the second rod 13 can drive the third rod 22 and the substrate 2 to turn over through the fourth rod 28, thereby achieving the purpose of turning over the integrated circuit board 1.
It should be noted that in the present embodiment, the static friction force between the first rod 12 and the wall of the substrate 2 is far greater than the static friction force between the screw rod 5 and the inner wall of the substrate 2, so that the damping between the first rod 12 and the wall of the substrate 2 is greater than the damping between the screw rod 5 and the inner wall of the substrate 2, so that the first rod 12 and the second bevel gear 11 remain stationary all the time when not driven, and thus the clamping stability of the integrated circuit board 1 is achieved, and when the substrate 2 is turned over, the two first bevel gears 10 rotate around the second bevel gear 11 in an engaged manner (because the static friction force between the first rod 12 and the wall of the substrate 2 is great, the first bevel gears 10 remain relatively motionless).
Besides, the connecting rod made of rubber material is adopted between the clamping plate 3 and the moving plate 4, so that the clamping plate 3 can always keep effective clamping on the integrated circuit board 1, namely when the base plate 2 rotates, two first conical teeth 10 in the base plate 2 are meshed around the second conical teeth 11 and rotate for a certain angle, the first conical teeth 10 drive the screw rod 5 to rotate for a certain angle, the moving plate 4 is caused to axially move for a certain distance, the clamping distance of the clamping plate 3 is changed, but the elastic force of the rubber connecting rod can counteract the clamping force change of the clamping plate 3 caused by the part of the clamping distance change, so that stable clamping on the integrated circuit board 1 is always kept in the overturning process.
Example 2
The difference between the embodiment 2 and the embodiment 1 is that the connecting rod between the clamping plate 3 and the moving plate 4 may be a telescopic rod, in this embodiment, a fourth spring (not shown) is sleeved on the outer side of the telescopic rod, and two ends of the fourth spring are respectively fixed on the corresponding plate surfaces of the clamping plate 3 and the moving plate 4, so that the clamping plate 3 can always keep effective clamping on the integrated circuit board 1, that is, when the substrate 2 rotates, two first bevel teeth 10 in the substrate 2 mesh around the second bevel teeth 11 and rotate by a certain angle, which can make the first bevel teeth 10 drive the screw rod 5 to rotate by a certain angle, so that the moving plate 4 moves axially by a certain distance, so that the clamping distance of the clamping plate 3 changes, but due to the arrangement of the fourth spring and the telescopic rod, the elasticity of the fourth spring can offset the clamping force change of the clamping plate 3 caused by the part of the clamping distance, so as to always keep stable clamping on the integrated circuit board 1 in the turnover process.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. The clamping device for testing the integrated circuit board is characterized by comprising a first cylinder, a base plate, a clamping mechanism and a turnover mechanism, wherein the whole first cylinder is horizontally arranged, one end of the first cylinder is provided with an opening, and the base plate is rotatably arranged in the opening;
the clamping mechanism is arranged on the base plate and comprises two clamping plates, a first rod body and a transmission assembly, a clamping space for clamping and fixing the integrated circuit board is formed between the two clamping plates, the first rod body is inserted into one side of the base plate, which is positioned in the first cylinder, and is positioned in the axial direction of the first cylinder, and the first rod body acts on the transmission assembly to adjust the clamping distance between the two clamping plates;
the turnover mechanism comprises a second rod body, a second cylinder body and a turnover assembly, wherein the second rod body is inserted into the other end of the first cylinder body, two ends of the second cylinder body are respectively and movably sleeved on the outer sides of the first rod body and the second rod body, the second rod body acts on the second cylinder body to drive the first rod body to rotate, the turnover assembly acts on the second cylinder body to release the transmission between the second rod body and the first rod body, and the integrated circuit board clamped on the substrate can be driven to turn;
a second limiting groove is axially formed in the outer side of the second cylinder body, and a first fixed shaft which is in sliding plug fit with the second limiting groove is radially arranged in the outer side of the first rod body; a second dead axle is radially arranged on the outer side of the second rod body, a fourth limit groove with a notch facing one side of the second rod body and matched with the second dead axle in a sliding plug-in manner is arranged on the second cylinder body,
when the second rod body drives the first rod body to rotate, the first fixed shaft is positioned at one end, close to the first rod body, of the second limiting groove, and the second fixed shaft is positioned at one end, close to the first rod body, of the fourth limiting groove;
the outer side of the first rod body is sleeved with a fixed sleeve, the outer side of the first rod body is sleeved with a sliding sleeve in rotary extrusion fit with the second cylinder in a sliding manner, the sliding sleeve is positioned between the fixed sleeve and the second cylinder, the outer side of the first rod body is sleeved with a first spring, and two ends of the first spring are respectively connected to corresponding outer walls of the sliding sleeve and the fixed sleeve;
when the second rod body drives the first rod body to rotate, the sliding sleeve always extrudes the second cylinder body through the elasticity of the first spring;
the turnover assembly comprises a third rod body which is inserted on the first cylinder body and is parallel to the second rod body,
the outer side of the second cylinder body is sleeved and fixed with a first disc, a fifth annular limit groove is circumferentially formed in the disc body of the first disc, a limit sleeve is slidably clamped in the fifth limit groove, a third rod body is fixedly inserted on the limit sleeve and can drive the first disc to axially move through the limit sleeve,
a first clamping block is arranged at one end of the third rod body, which is close to the base plate, a first clamping groove matched with the first clamping block is arranged on the base plate,
a fourth rod body perpendicular to the axis of the third rod body is sleeved and fixed on the third rod body, one end of the fourth rod body is sleeved and arranged on the outer side of the second rod body,
when the first clamping block is positioned outside the first clamping groove, the second rod body can rotate relative to the fourth rod body, and when the first clamping block is clamped into the first clamping groove, the second rod body can drive the third rod body to synchronously rotate through the fourth rod body;
the annular groove is circumferentially formed in the outer wall of the second rod body, a third cylinder body is rotatably sleeved outside the annular groove, a plurality of first bead grooves are sequentially formed in the outer circumference of the third cylinder body, a cylinder slot is formed in the fourth rod body, the third cylinder body is rotatably inserted in the cylinder slot, first clamping beads matched with the first bead grooves are elastically arranged on the wall of the cylinder slot, first bead grooves matched with the first clamping beads are formed in the second rod body, and the first bead grooves are located on one side, close to the second cylinder body, of the annular groove.
2. The clamping device for testing the integrated circuit board according to claim 1, wherein the transmission assembly comprises two moving plates, two screw rods, two first conical teeth and second conical teeth, the two moving plates are oppositely arranged on the opposite sides of the two clamping plates, each moving plate is elastically connected with the adjacent clamping plates through a connecting rod, the two screw rods are oppositely inserted in the base plate in a straight shape, one ends of the two moving plates are respectively sleeved on the outer sides of the two screw rods in a threaded mode, the two first conical teeth are fixed on the close ends of the two screw rods, one ends of the first rod bodies extend into the base plate and are fixedly provided with the second conical teeth, and the second conical teeth are located between the two first conical teeth and meshed with the two first conical teeth.
3. The clamping device for testing the integrated circuit board according to claim 2, wherein a radial groove for inserting the moving plate is formed in the base plate, a first limit groove is formed in the bottom of the radial groove, a first limit block is arranged in the first limit groove, and the first limit block is fixedly connected with the moving plate.
4. The clamping device for testing an integrated circuit board according to claim 1, wherein two rail blocks which are mutually horizontal are oppositely arranged on the inner peripheral side of the first cylinder body, and rail grooves which are matched with the rail blocks in a sliding clamping manner are formed in two sides of the base plate.
5. The clamping device for testing the integrated circuit board according to claim 4, wherein a second clamping bead is elastically arranged on one side of the track block facing the center of the first cylinder, and two second bead grooves matched with the second clamping bead are oppositely formed on the inner wall of the track groove.
6. The clamping device for testing an integrated circuit board according to claim 2, wherein a static friction force between the first rod body and the board wall is greater than a static friction force between the screw rod and the board inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210696950.7A CN115072343B (en) | 2022-06-20 | 2022-06-20 | Clamping device for testing integrated circuit board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210696950.7A CN115072343B (en) | 2022-06-20 | 2022-06-20 | Clamping device for testing integrated circuit board |
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| Publication Number | Publication Date |
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| CN115072343A CN115072343A (en) | 2022-09-20 |
| CN115072343B true CN115072343B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210696950.7A Active CN115072343B (en) | 2022-06-20 | 2022-06-20 | Clamping device for testing integrated circuit board |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6635516B1 (en) * | 1999-10-08 | 2003-10-21 | Nikon Corporation | Substrate dropping prevention mechanism and substrate inspection device provided therewith |
| CN1646925A (en) * | 2002-04-15 | 2005-07-27 | 因泰斯特Ip公司 | Test head positioner system |
| CN209606575U (en) * | 2019-02-27 | 2019-11-08 | 华芯智造微电子(重庆)股份有限公司 | A kind of turnover mechanism of chip testing machine |
| CN214205986U (en) * | 2021-01-04 | 2021-09-14 | 安徽博泰电路科技股份有限公司 | Clamping device is used in circuit board processing |
-
2022
- 2022-06-20 CN CN202210696950.7A patent/CN115072343B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6635516B1 (en) * | 1999-10-08 | 2003-10-21 | Nikon Corporation | Substrate dropping prevention mechanism and substrate inspection device provided therewith |
| CN1646925A (en) * | 2002-04-15 | 2005-07-27 | 因泰斯特Ip公司 | Test head positioner system |
| CN209606575U (en) * | 2019-02-27 | 2019-11-08 | 华芯智造微电子(重庆)股份有限公司 | A kind of turnover mechanism of chip testing machine |
| CN214205986U (en) * | 2021-01-04 | 2021-09-14 | 安徽博泰电路科技股份有限公司 | Clamping device is used in circuit board processing |
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|---|---|
| CN115072343A (en) | 2022-09-20 |
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