CN219592715U - Tool fixture for accurately positioning PCB - Google Patents
Tool fixture for accurately positioning PCB Download PDFInfo
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- CN219592715U CN219592715U CN202320140326.9U CN202320140326U CN219592715U CN 219592715 U CN219592715 U CN 219592715U CN 202320140326 U CN202320140326 U CN 202320140326U CN 219592715 U CN219592715 U CN 219592715U
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- pushing block
- pcb
- connecting rod
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Abstract
The utility model relates to a tool fixture for accurately positioning a PCB (printed circuit board), which comprises a positioning module, wherein the positioning module comprises a mounting plate, a support frame is arranged on the mounting plate, a first push block and a second push block are arranged on a substrate of the support frame, a mold cavity is arranged between the first push block and the second push block, a first connecting rod is connected to the first push block, a second connecting rod is connected to the second push block, a shrinkage cylinder is arranged on one side of the first push block, a tension spring is arranged in the substrate, one end of the tension spring is arranged on the first push block, the other end of the tension spring is arranged on the second push block, a reference block is arranged on the second push block, the reference block is connected with the second push block through a pin roll, a pressure spring is sleeved on the pin roll, and the pressure spring is arranged between the second push block and the reference block; the lighting module comprises a jacking cylinder, the jacking cylinder is in driving connection with a jacking seat, a probe seat is arranged on the jacking seat and extends into the die cavity, and a probe is arranged in the probe seat. The utility model can realize the complete fixation of the PCB and improve the positioning precision of the PCB and the consistency after AA.
Description
Technical Field
The utility model relates to the technical field of cameras, in particular to a tool fixture for accurately positioning a PCB.
Background
With the improvement of the pixel performance, lens technology and quality of the image acquisition sensor, the requirements on the assembly quality of cameras in production workshops are higher and higher, so that more and more manufacturers are equipped with precise six-axis active focusing equipment.
However, as is well known, the camera module is fixed in the fixture by the front shell and the PCB board, the lens is relatively moved for focusing, and the consistency of the product AA (active alignment) in the mass production process depends on the consistency of the fixture, so to speak, the fixture is the basis of the AA focusing process, and only good fixture can ensure the performance of the product. At present, the existing camera focusing jig adopts a mode of mold cavity positioning and upper positioning or lower positioning, but because of uncertainty of the outline dimension tolerance of the PCB, the mold cavity for placing the PCB is larger in size, the PCB is inclined due to the fact that the PCB is positioned by the upper positioning or the lower positioning, the positioning precision of the PCB is poor, and therefore consistency and repeatability after AA are poor.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to overcome the defects that in the prior art, the camera focusing jig adopts a mode of mold cavity positioning and upper positioning or lower positioning, but the size of the mold cavity is bigger, the PCB is inclined due to the fact that the PCB is positioned by the upper positioning or the lower positioning, and the positioning precision of the PCB is poor.
In order to solve the technical problems, the utility model provides a tool fixture for precisely positioning a PCB, which comprises
The positioning module comprises a mounting plate, a supporting frame is arranged on the mounting plate, a first pushing block and a second pushing block are arranged on a substrate of the supporting frame in a sliding mode, a mold cavity for placing a PCB (printed circuit board) is arranged between the first pushing block and the second pushing block, the mold cavity is arranged on the substrate, a first connecting rod is rotationally connected to the first pushing block, a second connecting rod is rotationally connected to the second pushing block, the first connecting rod is connected with the second connecting rod, a telescopic cylinder for acting on the joint of the first connecting rod and the second connecting rod is arranged on one side of the first pushing block, a tension spring is arranged in the substrate, one end of the tension spring is arranged on the first pushing block, the other end of the tension spring is arranged on the second pushing block, a reference block is arranged on one side, close to the mold cavity, of the second pushing block, the reference block is connected with the second pushing block through a pin shaft, a compression spring is sleeved on the pin shaft, and the compression spring is arranged between the second pushing block and the reference block;
the lighting module comprises a plurality of jacking air cylinders, the jacking air cylinders are arranged on the mounting plate, jacking seats are connected with the jacking air cylinders in a driving mode, probe seats are arranged on the jacking seats, the probe seats extend into the die cavities, and probes used for contacting with the PCB are arranged in the probe seats.
In one embodiment of the utility model, a placing hole for placing the mold cavity is formed in the base plate, placing grooves are formed in two sides of the placing hole, first guide posts are arranged in the two placing grooves, the first guide posts penetrate through one sides of the first push block and the second push block, the first guide posts are connected with one sides of the first push block and the second push block in a sliding mode through linear bearings, and two ends of the first guide posts are pressed with the base plate through pressing covers.
In one embodiment of the present utility model, a first connecting buckle is installed on the first push block, a second connecting buckle is installed on the second push block, one end of the tension spring is connected with the first connecting buckle, and the other end of the tension spring is connected with the second connecting buckle.
In one embodiment of the utility model, the second push block is provided with a positioning pin and the pin shaft, the positioning pin and the pin shaft sequentially penetrate through the second push block and the reference block, and one end of the pin shaft, which is close to the second push block, is provided with a clamp spring.
In one embodiment of the utility model, a positioning surface is arranged on one corner of the reference block, which is close to the die cavity, and the positioning surface comprises a reference surface and an inclined surface, the reference surface is connected with the inclined surface, and the inclined surface is arranged on one side, which is far away from the die cavity.
In one embodiment of the present utility model, the first pushing block and the second pushing block are both provided with a clamping member for clamping the PCB.
In one embodiment of the utility model, a first copper sleeve is pressed in the first connecting rod, a first step screw is connected in the first copper sleeve, the first step screw penetrates through the first copper sleeve to be connected with the first pushing block, a second copper sleeve is pressed in the second connecting rod, a second step screw is connected in the second copper sleeve, the second step screw penetrates through the second copper sleeve to be connected with the second pushing block, and the first connecting rod and the second connecting rod are connected through a third step screw.
In one embodiment of the utility model, a spacer plate is arranged between the first push block and the second push block, and the spacer plate is mounted on the base plate.
In one embodiment of the utility model, the supporting frame comprises a base plate, two sides of one pair of surfaces of the base plate are provided with supporting plates, two sides of the other pair of surfaces of the base plate are provided with side plates, the supporting plates and the side plates are arranged on the mounting plate, and the jacking seat is connected with the base plate through a plurality of second guide posts.
In one embodiment of the utility model, a plurality of quick-change knobs are provided on the mounting plate.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
according to the tool fixture for precisely positioning the PCB, the mounting plate is used as a support of the whole fixture, the first pushing block and the second pushing block are slidably mounted on the base of the support frame, during feeding, the telescopic cylinder stretches out and pushes the joint of the first connecting rod and the second connecting rod to drive the first pushing block and the second pushing block to be away from each other, the first pushing block and the second pushing block are placed in the PCB to the mold cavity, the telescopic cylinder retracts, the tension spring pulls the first pushing block and the second pushing block to be close to each other towards the middle, the pressure spring pushes the reference block to press one corner of the PCB, the jacking cylinder in the support frame stretches out and pushes the jacking seat to push the probe in the probe seat to be in contact with the PCB, the movement of the PCB in the up-down direction can be limited, the complete fixation of the PCB is realized, the positioning accuracy of the PCB is improved, and consistency and repeatability after AA is improved.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
Fig. 1 is a schematic structural diagram of a fixture for precisely positioning a PCB board according to the present utility model;
fig. 2 is a schematic structural diagram of a lighting module in the fixture for precisely positioning a PCB board according to the present utility model;
fig. 3 is a schematic structural diagram of a positioning module in the fixture for precisely positioning a PCB board according to the present utility model;
fig. 4 is an exploded view of a positioning module in the tooling fixture for precisely positioning a PCB board according to the present utility model;
fig. 5 is a schematic structural diagram of a substrate in the fixture for precisely positioning a PCB board according to the present utility model;
fig. 6 is a schematic structural diagram of a reference block in the fixture for precisely positioning a PCB board according to the present utility model
Description of the specification reference numerals: 1. a positioning module; 11. a mounting plate; 12. a support frame; 121. a support plate; 122. a side plate; 123. a substrate; 1231. a mounting hole; 1232. a placement groove; 1233. a first guide post; 1234. a linear bearing; 1235. a gland; 1236. a partition plate; 13. a tension spring; 14. a first push block; 141. a first connecting buckle; 142. a clamping piece; 143. a first link; 1431. a first copper sleeve; 1432. a first step screw; 15. a second push block; 151. the second connecting buckle; 152. a second link; 1521. a second copper sleeve; 1522. a second step screw; 153. a third step screw; 16. a telescopic cylinder; 17. a reference block; 171. a positioning surface; 172. a pin shaft; 173. a positioning pin; 18. a pressure spring; 2. a lighting module; 21. jacking the air cylinder; 22. a jacking seat; 23. a probe seat; 24. a probe; 25. a second guide post; 3. a quick-change knob; 4. and (3) a mold cavity.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Referring to fig. 1-6, the utility model provides a fixture for precisely positioning a PCB board, which comprises a positioning module 1 and a lighting module 2, wherein the positioning module 1 comprises a mounting plate 11, a supporting frame 12 is arranged on the mounting plate 11, a first push block 14 and a second push block 15 are slidably arranged on a base plate 123 of the supporting frame 12, a mold cavity 4 for placing the PCB board is arranged between the first push block 14 and the second push block 15, the mold cavity 4 is arranged on the base plate 123, a first connecting rod 143 is rotatably connected to the first push block 14, a second connecting rod 152 is rotatably connected to the second push block 15, the first connecting rod 143 is connected with the second connecting rod 152, a telescopic cylinder 16 for acting on the joint of the first connecting rod 143 and the second connecting rod 152 is arranged on one side of the first push block 14, a tension spring 13 is arranged in the base plate 123, one end of the tension spring 13 is arranged on the first push block 14, the other end is arranged on the second push block 15, a reference block 17 is arranged on one side, which is close to the mold cavity 4, of the second push block 15 is rotatably connected to the second push block 15, a compression spring 17 is arranged between the reference block 17 and the second push block 15 through a pin shaft 172, and a compression spring 18 is arranged between the second push block 17 and the second push block 15 through a pin shaft 172 and a compression spring 18; the lighting module 2 comprises a plurality of jacking cylinders 21, the jacking cylinders 21 are arranged on the mounting plate 11, the jacking cylinders 21 are in driving connection with jacking seats 22, probe seats 23 are arranged on the jacking seats 22, the probe seats 23 extend into the die cavities 4, and probes 24 used for contacting with the PCB are arranged in the probe seats 23.
In the fixture, the mounting plate 11 is used as a support of the whole fixture, the first push block 14 and the second push block 15 are slidably mounted on the base of the supporting frame 12, during feeding, the telescopic cylinder 16 stretches out and pushes the joint of the first connecting rod 143 and the second connecting rod 152 to drive the first push block 14 and the second push block 15 to be far away from each other, the PCB is placed into the die cavity 4, the telescopic cylinder 16 retracts, the tension spring 13 pulls the first push block 14 and the second push block 15 to be close to the middle, the pressure spring 18 pushes the reference block 17 to compress one corner of the PCB, limiting limit of the PCB in the XY axis direction is achieved, the jacking cylinder 21 in the supporting frame 12 stretches out and pushes the jacking seat 22 to push the probe 24 in the probe seat 23 to be propped against the PCB, movement of the PCB in the up-down direction can be limited, complete fixing of the PCB is achieved, positioning accuracy of the PCB is improved, and consistency and repeatability after AA is improved.
Specifically, a placement hole 1231 for placing the mold cavity 4 is formed in the base plate 123, placement grooves 1232 are formed in two sides of the placement hole 1231, first guide posts 1233 are arranged in the two placement grooves 1232, the first guide posts 1233 penetrate through one sides of the first push block 14 and the second push block 15, the first guide posts 1233 are in sliding connection with one sides of the first push block 14 and the second push block 15 through linear bearings 1234, and two ends of the first guide posts 1233 are pressed with the base plate 123 through pressing covers 1235. The linear bearing 1234 can enable the first push block 14 and the second push block 15 to slide in the placing groove 1232, so that the first push block 14 and the second push block 15 are opened and closed, the reference block 17 is driven to open and close, and the PCB is placed and clamped conveniently. The gland 1235 may ensure the stability of the sliding of the first push block 14 and the second push block 15 on the first guide post 1233.
Further, the first push block 14 is provided with a first connecting buckle 141, the second push block 15 is provided with a second connecting buckle 151, one end of the tension spring 13 is connected with the first connecting buckle 141, and the other end is connected with the second connecting buckle 151. I.e. the tension spring 13 pulls the movement between the first push block 14 and the second push block 15. When the telescopic cylinder 16 pushes the first connecting rod 143 and the second connecting rod 152 to move towards two ends, the first push block 14 and the second push block 15 are driven to slide on the base plate 123 far away from each other, the tension spring 13 stretches, after the feeding is finished, the telescopic cylinder 16 retracts, the first push block 14 and the second push block 15 are pulled towards the middle by the resilience force of the reset of the tension spring 13, and damage to the die cavity 4 and the PCB can be avoided.
In this embodiment, a positioning pin 173 and a pin shaft 172 are disposed on the second push block 15, the positioning pin 173 and the pin shaft 172 sequentially penetrate through the second push block 15 and the reference block 17, a clamp spring is disposed at one end of the pin shaft 172 close to the second push block 15, the clamp spring can be used for fixing the second push block 15, the positioning pin 173 serves as a guide for movement of the reference block 17, when the extension cylinder 16 retracts, the tension spring 13 resets to pull the first push block 14 and the second push block 15, and the compression spring 18 on the pin shaft 172 resets to push the reference block 17 to move towards the PCB board to compress one corner of the PCB board, so that positioning of the PCB is achieved.
Specifically, a positioning surface 171 is disposed on a corner of the reference block 17 near the mold cavity 4, the positioning surface 171 includes a reference surface and an inclined surface, the reference surface is connected with the inclined surface, and the inclined surface is disposed on a side far away from the mold cavity 4. When the pressure spring 18 pushes the reference block 17 to move towards the PCB, the PCB is contacted with the inclined plane first so as to be contacted with the reference surface, and the positioning of the PCB is realized through the reference surface.
Further, the clamping pieces 142 for clamping the PCB are arranged on the first pushing block 14 and the second pushing block 15, the two clamping pieces 142 can push the PCB on the mold cavity 4 to be positioned, clamping of the PCB can be achieved, the PCB is prevented from moving again, the position accuracy of the PCB is guaranteed to be unchanged, and accordingly consistency and repeatability after AA are improved.
In this embodiment, a first copper sleeve 1431 is pressed in the first connecting rod 143, a first step screw 1432 is connected in the first copper sleeve 1431, the first step screw 1432 passes through the first copper sleeve 1431 to be connected with the first push block 14, a second copper sleeve 1521 is pressed in the second connecting rod 152, a second step screw 1522 is connected in the second copper sleeve 1521, the second step screw 1522 passes through the second copper sleeve 1521 to be connected with the second push block 15, and the first connecting rod 143 and the second connecting rod 152 are connected through a third step screw 153. The first link 143 and the second link 152 are moved in multiple directions on the basis of the step screw by being engaged with the copper bush.
Specifically, a partition plate 1236 is provided between the first push block 14 and the second push block 15, and the partition plate 1236 is mounted on the base plate 123. The spacer 1236 may act as a divider of the movement of the first push block 14 and the second push block 15, pressing the first guide bar into the placement groove 1232, so that the first push block 14 and the second push block 15 stably slide on the first guide bar.
In addition, support frame 12 includes base plate 123, and backup pad 121 is installed to the both sides of a pair of face of base plate 123, and curb plate 122 is installed to the both sides of another face, and backup pad 121 and curb plate 122 all set up on mounting panel 11, and backup pad 121 and curb plate 122 can be as the support of base plate 123, and provide the space of installation and realization for lighting module 2, the space of better utilization tool, the popularization of this tool of being convenient for. The jacking seat 22 is connected with the base plate 123 through a plurality of second guide posts 25, the second guide posts 25 provide motion guidance for jacking or descending of the jacking seat 22, and linear bearings 1234 are also arranged on the second guide posts 25, so that the motion of the jacking seat 22 is facilitated.
Further, a plurality of quick-change knobs 3 are arranged on the mounting plate 11, and when the jig is connected with other devices, the quick-change knobs 3 can play a role in quick mounting, so that manual operation is reduced.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. Tool fixture of accurate location PCB board, its characterized in that: comprising
The positioning module comprises a mounting plate, a supporting frame is arranged on the mounting plate, a first pushing block and a second pushing block are arranged on a substrate of the supporting frame in a sliding mode, a mold cavity for placing a PCB (printed circuit board) is arranged between the first pushing block and the second pushing block, the mold cavity is arranged on the substrate, a first connecting rod is rotationally connected to the first pushing block, a second connecting rod is rotationally connected to the second pushing block, the first connecting rod is connected with the second connecting rod, a telescopic cylinder for acting on the joint of the first connecting rod and the second connecting rod is arranged on one side of the first pushing block, a tension spring is arranged in the substrate, one end of the tension spring is arranged on the first pushing block, the other end of the tension spring is arranged on the second pushing block, a reference block is arranged on one side, close to the mold cavity, of the second pushing block, the reference block is connected with the second pushing block through a pin shaft, a compression spring is sleeved on the pin shaft, and the compression spring is arranged between the second pushing block and the reference block;
the lighting module comprises a plurality of jacking air cylinders, the jacking air cylinders are arranged on the mounting plate, jacking seats are connected with the jacking air cylinders in a driving mode, probe seats are arranged on the jacking seats, the probe seats extend into the die cavities, and probes used for contacting with the PCB are arranged in the probe seats.
2. The tool fixture for precisely positioning a PCB according to claim 1, wherein: the novel plastic mold comprises a base plate, wherein a placing hole for placing a mold cavity is formed in the base plate, placing grooves are formed in two sides of the placing hole, first guide posts are arranged in the placing grooves, the first guide posts penetrate through one sides of the first push block and the second push block, the first guide posts are in sliding connection with one sides of the first push block and the second push block through linear bearings, and two ends of the first guide posts are pressed with the base plate through pressing covers.
3. The tool fixture for precisely positioning a PCB according to claim 1, wherein: the first push block is provided with a first connecting buckle, the second push block is provided with a second connecting buckle, one end of the tension spring is connected with the first connecting buckle, and the other end of the tension spring is connected with the second connecting buckle.
4. The tool fixture for precisely positioning a PCB according to claim 1, wherein: the locating pin and the pin shaft are arranged on the second push block, the locating pin and the pin shaft sequentially penetrate through the second push block and the reference block, and a clamp spring is arranged at one end, close to the second push block, of the pin shaft.
5. The tool fixture for precisely positioning a PCB according to claim 1, wherein: the positioning surface is arranged on one corner of the reference block, which is close to the die cavity, and comprises a reference surface and an inclined surface, wherein the reference surface is connected with the inclined surface, and the inclined surface is arranged on one side, which is far away from the die cavity.
6. The tool fixture for precisely positioning a PCB according to claim 1, wherein: and clamping pieces for clamping the PCB are arranged on the first pushing block and the second pushing block.
7. The tool fixture for precisely positioning a PCB according to claim 1, wherein: the first copper bush is pressed in the first connecting rod, the first copper bush is internally connected with a first step screw, the first step screw penetrates through the first copper bush to be connected with the first pushing block, the second copper bush is pressed in the second connecting rod, the second step screw is connected in the second copper bush, the second step screw penetrates through the second copper bush to be connected with the second pushing block, and the first connecting rod is connected with the second connecting rod through a third step screw.
8. The tool fixture for precisely positioning a PCB according to claim 1, wherein: a spacing plate is arranged between the first pushing block and the second pushing block, and the spacing plate is arranged on the base plate.
9. The tool fixture for precisely positioning a PCB according to claim 1, wherein: the support frame includes the base plate, the backup pad is installed to the both sides of a pair of face of base plate, and the curb plate is installed to the both sides of another face, backup pad and curb plate all set up on the mounting panel, the jacking seat is connected with the base plate through a plurality of second guide posts.
10. The tool fixture for precisely positioning a PCB according to claim 1, wherein: a plurality of quick-change knobs are arranged on the mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320140326.9U CN219592715U (en) | 2023-01-30 | 2023-01-30 | Tool fixture for accurately positioning PCB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320140326.9U CN219592715U (en) | 2023-01-30 | 2023-01-30 | Tool fixture for accurately positioning PCB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219592715U true CN219592715U (en) | 2023-08-25 |
Family
ID=87686409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320140326.9U Active CN219592715U (en) | 2023-01-30 | 2023-01-30 | Tool fixture for accurately positioning PCB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219592715U (en) |
-
2023
- 2023-01-30 CN CN202320140326.9U patent/CN219592715U/en active Active
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