CN114650661B - Positioning jig for PCB and positioning method thereof - Google Patents
Positioning jig for PCB and positioning method thereof Download PDFInfo
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- CN114650661B CN114650661B CN202210559793.5A CN202210559793A CN114650661B CN 114650661 B CN114650661 B CN 114650661B CN 202210559793 A CN202210559793 A CN 202210559793A CN 114650661 B CN114650661 B CN 114650661B
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- 238000003825 pressing Methods 0.000 claims abstract description 103
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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Abstract
The invention discloses a positioning jig for a PCB and a positioning method thereof, and relates to the field of positioning jigs. According to the PCB pressing machine, the two top plates can be enabled to press the two side portions of the PCB by starting the first motor, the other two sides of the PCB are simultaneously fixed by the two movable pressing plates, the fixing is more stable, the PCB is located in the middle position after the fixing, the top pressing plates move to drive the two second convex columns and the mounting pressing plates to move downwards, so that the top of the PCB can be pressed, the later-stage processing is facilitated, meanwhile, the pressure is sensed through the pressure sensor, when the pressure reaches a certain value, the controller controls the first motor to be turned off, and therefore the PCB can be pressed by proper pressure.
Description
Technical Field
The invention relates to the technical field of positioning jigs, in particular to a positioning jig for a PCB and a positioning method thereof.
Background
The PCB, which is called a printed circuit board in chinese, is an important electronic component, a support for electronic components, and a carrier for electrical interconnection of electronic components.
The existing circuit board positioning jig is often fixed only from the directions of two sides when being positioned, and the fixing mode is single, so that the fixing is inconvenient and stable, and the circuit boards with different sizes cannot be stably fixed, and therefore the positioning jig for the PCB is provided.
Disclosure of Invention
The present application provides a positioning fixture for a PCB and a positioning method thereof to solve the problems of the prior art.
In order to achieve the above purpose, the present application provides the following technical solutions: a positioning jig for a PCB comprises a positioning plate, wherein two second pressing blocks and two connecting pressing plates are slidably mounted at the top of the positioning plate, the two second pressing blocks and the two connecting pressing plates are arranged in a rectangular shape, a first side extrusion mechanism and a top extrusion mechanism are mounted on the side parts, close to each other, of the two connecting pressing plates, the first side extrusion mechanism and the top extrusion mechanism which are positioned on the same connecting pressing plate are connected through transmission mechanisms, a pressure sensing mechanism is mounted on the side part of one of the transmission mechanisms, the two connecting pressing plates are connected through a screw rod driving mechanism, an adjusting mechanism is mounted on the screw rod driving mechanism, two pulling mechanisms are mounted on the adjusting mechanism, the two pulling mechanisms are respectively connected with the two second pressing blocks, and second side extrusion mechanisms are mounted on the side parts of the two second pressing blocks, the bottom of the positioning plate is provided with a controller, and the controller, the pressure sensing mechanism and the screw rod driving mechanism are connected.
Preferably, the screw rod driving mechanism comprises a first sliding hole arranged at the top of the positioning plate, two first sliding blocks are arranged in the first sliding hole in a sliding manner, the tops of the two first sliding blocks are respectively connected with the bottoms of the two connecting pressing plates, a positive thread block and a negative thread block are respectively arranged at the bottoms of the two first sliding blocks, a positive thread hole and a negative thread hole are respectively arranged at the side parts of the positive thread block and the negative thread block, a positive thread rod and a negative thread rod are respectively arranged in the positive thread hole and the negative thread hole in a threaded manner, one ends of the positive thread rod and the negative thread rod, which are close to each other, are connected, one end of the negative thread rod, which is far away from the positive thread rod, is provided with a connecting rod, a fixing plate is arranged at the side part of the positioning plate, a first motor is arranged at the bottom of the fixing plate, and one end of the connecting rod is connected with the output end of the first motor, the bottom of the regular thread block is provided with a connecting plate, and the side part of the connecting plate is provided with an adjusting mechanism.
Preferably, adjustment mechanism is including seting up in the thread groove of connecting plate lateral part, the double-screw bolt is installed to the thread groove internal thread, the one end of double-screw bolt extends to the knob is installed outward to the thread groove, fixed cover has connect the rolling disc on the double-screw bolt, the annular rotation groove has been seted up to the circumference lateral part of rolling disc, two guide ways, two have been seted up to the lateral part of connecting plate equal slidable mounting has the guide bar in the guide way, two the connecting block is all installed to the one end of guide bar, two are installed to the lateral part that the connecting block is close to each other two the stripper bar is located the annular rotation inslot, the double-screw bolt is located two between the stripper bar, two the connecting block respectively with two pulling mechanism connects.
Preferably, the pulling mechanism comprises a pulling rod which is rotatably installed on the side portion of the connecting block, a second sliding hole which is formed in the top of the positioning plate is formed in the side portion of the pulling rod, sliding rods are installed on the inner walls of the two sides of the second sliding hole, a second sliding block is sleeved on the sliding rods in a sliding mode, one end of the connecting block, far away from the pulling rod, is rotatably installed on the side portion of the second sliding block, and the top of the second sliding block is installed on the bottom of the second pressing block.
Preferably, first side portion extrusion mechanism is including offering in the apical trough of connecting the clamp plate lateral part, set up the apical pore that runs through to the outside on one side inner wall of apical trough, sliding mounting has the roof in the apical trough, the roof is close to the ejector pin is installed to one side of apical pore, the one end of ejector pin is run through the apical trough, the lateral part of ejector pin is installed and is linked up the piece, the lateral part of linking up the piece has seted up first pressure hole, sliding mounting has first convex post in the first pressure hole, first spring has been cup jointed on the first convex post, the both ends of first spring install respectively in first convex post with link up on the lateral part that the piece is close to each other, the ejector pin with drive mechanism connects, first convex post with induction mechanism cooperation installation.
Preferably, drive mechanism is including offering in the groove that moves down of joint press plate lateral part, it has the stopper to move down inslot slidable mounting, the top of ejector pin is rotated and is installed the dwang, the top of dwang rotate install in one of stopper is served, the stopper with top extrusion mechanism connects.
Preferably, top extrusion mechanism including install in the stopper is kept away from the top clamp plate of dwang one end, two second pressure holes, two have been seted up at the top of top clamp plate equal slidable mounting has second convex post, two in the second pressure hole installation clamp plate, two are installed to the bottom of second convex post the second spring has all been cup jointed on the second convex post, the top and the bottom of second spring install respectively in the top clamp plate with on the lateral part that the installation clamp plate is close to each other.
Preferably, the second side portion extrusion mechanism includes two third pressure holes, two, equal slidable mounting has a third convex post, two in the third pressure hole the activity clamp plate is installed to the one end of third convex post, two all the third spring has been cup jointed on the third convex post, two the one end of third spring install in on the lateral part of second briquetting, two the other end of third spring install in two on the lateral part of third convex post.
Preferably, response mechanism including install in the L shape pole of connecting the clamp plate lateral part, pressure sensor is installed to the lateral part of L shape pole, pressure sensor with the one end butt of first convex post, pressure sensor with the controller is connected, the controller with first motor is connected, the second motor is installed to the lateral part of fixed plate, the lateral part of fixed plate rotates installs the pivot, the output of second motor with equal fixed mounting has a parallel bars, two in the pivot the lateral part of parallel bars rotates installs the loose axle, two the parallel plate is installed to the one end of loose axle, the parallel plate with the top parallel arrangement of locating plate, pneumatic chuck is installed to the bottom of parallel plate, pneumatic chuck with the controller is connected.
The application also discloses a positioning method of the positioning jig for the PCB, which comprises the following steps:
s1, starting a second motor to drive a parallel rod connected with the second motor to rotate, wherein one parallel rod rotates to drive a movable shaft, a parallel plate and the other parallel rod to rotate, when the parallel plate is in contact with a PCB, the PCB can be sucked by starting a pneumatic sucker, then starting the second motor to rotate the parallel plate, so that the PCB is driven to the top of the positioning plate, and then closing the pneumatic sucker to place the PCB on the top of the positioning plate;
s2, starting the first motor to drive the connecting rod to rotate, the connecting rod rotates to drive the reverse threaded rod and the positive threaded rod to rotate, thereby leading the reverse thread block and the positive thread block to approach each other, leading the reverse thread block and the positive thread block to approach each other and driving the two first sliding blocks and the two connecting pressing plates to approach each other, when the two connecting pressure plates are just contacted with the two side parts of the PCB, the two top plates are extruded to enter the two top grooves, thereby leading the two ejector rods to be away from each other, leading the two ejector rods to be away from each other and driving the two connecting blocks to move, leading the two first springs to be deformed by the movement of the two connecting blocks, the two first convex columns are pushed to press the two pressure sensors under the reaction force of the two first springs, therefore, the two pressure sensors sense the pressure, when the pressure reaches a certain value, the controller controls the first motor to be closed, and the two sides of the PCB are pressed by proper pressure;
s3, wherein the positive thread block moves to drive the connecting plate to move, the connecting plate moves to drive the thread groove, the two extrusion rods, the two guide rods and the two connecting blocks to move, so that the two pulling rods rotate, the two pulling rods rotate to drive the two second sliding blocks to slide on the two sliding rods respectively, the two second sliding blocks move to drive the two second pressing blocks to move respectively, the two second pressing blocks simultaneously approach to each other to drive the two movable pressing plates to approach each other, the two movable pressing plates approach each other to drive the four third convex columns to move, so that the four third springs deform, and the other two sides of the PCB are pressed under the action of the four third springs, so that the four sides of the PCB can be simultaneously fixed and are more stable, and the PCB is positioned at the middle position after being fixed;
s4, the two ejector rods move to drive the two rotating rods to rotate, the two rotating rods rotate to drive the two limiting blocks to move, the two limiting blocks move to drive the two top pressing plates to move downwards, the two top pressing plates move to drive the two second convex columns and the mounting pressing plate to move downwards, when the mounting pressing plate is in contact with the top of the PCB, the two second springs deform, and the top of the PCB can be pressed under the reaction force of the two second springs, so that the later-stage processing is facilitated;
s5, when the length and width of the PCB are different, the knob is rotated to drive the adjusting stud to rotate by rotating the knob, the adjusting stud moves spirally in the thread groove, the stud moves spirally to drive the rotating disc to rotate and move simultaneously, the rotating disc moves to enable the inner wall of the annular rotating groove to extrude two extrusion rods to move, the two extrusion rods move to drive the two connecting blocks to move, and further enable the two pulling rods to rotate, the two pulling rods rotate to drive the two second sliding blocks to move, the positions of the two second sliding blocks which move to drive the two second pressing blocks are changed, and therefore the PCB with different sizes can be stably fixed at the same time.
In conclusion, the technical effects and advantages of the invention are as follows:
1. according to the PCB positioning device, the second motor is started to drive the parallel rod to rotate, the parallel rod rotates to drive the movable shaft, the parallel plate and the other parallel rod to rotate, when the parallel plate is in contact with a PCB, the PCB can be sucked by starting the pneumatic sucker, then the second motor is started to drive the parallel plate to rotate, so that the PCB is driven to the top of the positioning plate, and then the pneumatic sucker is closed to place the PCB on the top of the positioning plate.
2. According to the invention, the first motor is started to drive the connecting rod to rotate, the connecting rod rotates to drive the reverse threaded rod and the positive threaded rod to rotate, so that the reverse threaded block and the positive threaded block are close to each other, the reverse threaded block and the positive threaded block are close to each other to drive the two first sliding blocks and the two connecting pressing plates to be close to each other, when the two connecting pressing plates are just in contact with the two sides of the PCB, the two top plates can be extruded into the two top grooves, the two first springs are deformed at the same time, the two first convex columns are pushed under the reaction force of the two first springs to tightly press the two pressure sensors, so that the two pressure sensors sense pressure, when the pressure reaches a certain value, the controller controls the first motor to be closed, and at the moment, the two sides of the PCB are tightly pressed by proper pressure.
3. According to the invention, the positive thread block moves to drive the connecting plate to move, so that the two second press blocks move, the two second press blocks simultaneously approach to each other to drive the two movable press plates to approach to each other, the two movable press plates approach to each other to drive the four third convex columns to move, so that the four third springs deform, the other two sides of the PCB are pressed under the action force of the four third springs, the four sides of the PCB can be simultaneously fixed, the fixing is more stable, and the PCB is positioned at the middle position after the fixing.
4. According to the invention, the two ejector rods move to drive the two rotating rods to rotate, the two rotating rods rotate to drive the two limiting blocks to move, the two limiting blocks move to drive the two top pressing plates to move downwards, the two top pressing plates move to drive the two second convex columns and the installation pressing plate to move downwards, when the installation pressing plate is contacted with the top of the PCB, the two second springs deform, and therefore the top of the PCB can be tightly pressed under the reaction force of the two second springs, and the later-stage processing is convenient.
5. According to the PCB fixing device, when the length and the width of the PCB are different, the knob is rotated to drive the adjusting stud to rotate, the adjusting stud moves spirally in the threaded groove, the stud moves spirally to drive the rotating disc to rotate and move simultaneously, the rotating disc moves to enable the inner wall of the annular rotating groove to extrude the two extrusion rods to move, the two extrusion rods move to drive the two connecting blocks to move, the two pulling rods further rotate to drive the two second sliding blocks to move, the two second sliding blocks move to drive the positions of the two second pressing blocks to change, and therefore the PCB fixing device can meet the requirement that PCBs of different sizes can be simultaneously and stably fixed.
Drawings
In order to more clearly illustrate the embodiments of the present application 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, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a first-view perspective structure of a positioning fixture for a PCB in an embodiment of the present application;
fig. 2 is a schematic second-view perspective view of a positioning fixture for a PCB in an embodiment of the present application;
FIG. 3 is an enlarged view of the structure of FIG. 2 at C;
fig. 4 is a schematic third perspective view of a positioning fixture for a PCB in an embodiment of the present application;
FIG. 5 is an enlarged view of the structure at A in FIG. 4;
FIG. 6 is an enlarged view of a portion of FIG. 4B;
FIG. 7 is an enlarged view of a portion of FIG. 1 at D;
fig. 8 is a schematic view of the installation of the second spring in the embodiment of the present application.
In the figure: 1. positioning a plate; 2. a first slide hole; 3. a first slider; 4. a positive thread block; 5. a reverse thread block; 6. a reverse threaded rod; 7. a positive threaded rod; 8. a connecting rod; 9. a first motor; 10. a connecting plate; 11. a guide groove; 12. a guide rod; 13. connecting blocks; 14. an extrusion stem; 15. a thread groove; 16. rotating the disc; 17. an annular rotating groove; 18. a stud; 19. pulling a rod; 20. a second slide hole; 21. a slide bar; 22. a second slider; 23. a second pressing block; 24. a top plate; 25. a top groove; 26. a top hole; 27. a top rod; 28. rotating the rod; 29. a downward moving groove; 30. a limiting rod; 31. a limiting hole; 32. a limiting block; 33. a top platen; 34. connecting the pressing plate; 35. a controller; 36. a knob; 37. a joining block; 38. a first male post; 39. a first spring; 40. an L-shaped rod; 41. a pressure sensor; 42. a second spring; 43. installing a pressing plate; 44. a second male post; 45. a third male post; 46. a third spring; 47. a movable pressing plate; 48. a fixing plate; 49. a second motor; 50. a parallel bar; 51. parallel plates; 52. pneumatic suction cups.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): referring to fig. 1-8, a positioning fixture for a PCB comprises a positioning plate 1, two second pressing blocks 23 and two connecting pressing plates 34 are slidably mounted on the top of the positioning plate 1, the two second pressing blocks 23 and the two connecting pressing plates 34 are arranged in a rectangular shape, a first side extruding mechanism and a top extruding mechanism are mounted on the mutually adjacent side portions of the two connecting pressing plates 34, the first side extruding mechanism and the top extruding mechanism on the same connecting pressing plate 34 are connected through a transmission mechanism, a pressure sensing mechanism is mounted on the side portion of one transmission mechanism, the two connecting pressing plates 34 are connected through a screw rod driving mechanism, an adjusting mechanism is mounted on the screw rod driving mechanism, two pulling mechanisms are mounted on the adjusting mechanism, the two pulling mechanisms are respectively connected with the two second pressing blocks 23, and second side extruding mechanisms are mounted on the side portions of the two second pressing blocks 23, the bottom of the positioning plate 1 is provided with a controller 35, and the controller 35, the pressure sensing mechanism and the screw rod driving mechanism are connected.
As shown in fig. 1 and 4, the screw rod driving mechanism includes a first sliding hole 2 arranged at the top of the positioning plate 1, two first sliding blocks 3 are slidably arranged in the first sliding hole 2, the tops of the two first sliding blocks 3 are respectively connected with the bottoms of two connecting pressing plates 34, a positive thread block 4 and a negative thread block 5 are respectively arranged at the bottoms of the two first sliding blocks 3, a positive thread hole and a negative thread hole are respectively arranged at the side parts of the positive thread block 4 and the negative thread block 5, a positive thread rod 7 and a negative thread rod 6 are respectively arranged in the positive thread hole and the negative thread hole, the ends of the positive thread rod 7 and the negative thread rod 6 close to each other are connected, a connecting rod 8 is arranged at one end of the negative thread rod 6 far away from the positive thread rod 7, a fixing plate 48 is arranged at the side part of the positioning plate 1, a first motor 9 is arranged at the bottom of the fixing plate 48, one end of the connecting rod 8 is connected with the output end of the first motor 9, the bottom of the regular thread block 4 is provided with a connecting plate 10, and the side part of the connecting plate 10 is provided with an adjusting mechanism. Start first motor 9 and drive connecting rod 8 and rotate, connecting rod 8 rotates and drives reverse threaded rod 6 and positive threaded rod 7 and rotate to make reverse thread piece 5 and positive thread piece 4 be close to each other, reverse thread piece 5 and positive thread piece 4 are close to each other and drive two first sliders 3 and two connection clamp plates 34 and are close to each other, are convenient for compress tightly.
As shown in fig. 5, the adjusting mechanism includes a thread groove 15 provided on a side portion of the connecting plate 10, a stud 18 is installed in the thread groove 15, one end of the stud 18 extends out of the thread groove 15 and is provided with a knob 36, two rotating discs 16 with intervals are fixedly sleeved on the stud 18, an annular rotating groove 17 is formed between the rotating discs 16, two guide grooves 11 are provided on the side portion of the connecting plate 10, guide rods 12 are slidably installed in the two guide grooves 11, connecting blocks 13 are installed at one ends of the two guide rods 12, two squeezing rods 14 are installed on the side portions of the two connecting blocks 13 close to each other, the two squeezing rods 14 are located in the annular rotating groove 17, and the two connecting blocks 13 are connected with the two pulling mechanisms respectively. When the lengths and the widths of the PCBs are different, the knob 36 is rotated to drive the adjusting studs 18 to rotate by rotating the knob 36, the adjusting studs 18 move spirally in the thread grooves 15, the studs 18 move spirally to drive the rotating disc 16 to rotate and simultaneously move in a translation mode, the rotating disc 16 moves in a translation mode, so that the inner wall of the rotating disc 16 extrudes the two extrusion rods 14 to drive the two extrusion rods 14 to move, the two extrusion rods 14 move to drive the two connecting blocks 13 to move, and the use is convenient.
As shown in fig. 1, 4 and 5, the pulling mechanism includes a pulling rod 19 rotatably mounted on a side portion of the connecting block 13, a second sliding hole 20 formed in a top portion of the positioning plate 1 is formed in the side portion of the pulling rod 19, sliding rods 21 are mounted on inner walls of two sides of the second sliding hole 20, a second slider 22 is slidably sleeved on the sliding rods 21, one end, far away from the connecting block 13, of the pulling rod 19 is rotatably mounted on a side portion of the second slider 22, and a top portion of the second slider 22 is mounted on a bottom portion of the second pressing block 23. Two pulling rods 19 rotate, two pulling rods 19 rotate to drive two second sliders 22 to move, and two second sliders 22 move to drive two second pressing blocks 23, so that the PCB boards with different sizes can be simultaneously and stably fixed.
As shown in fig. 2 and 3, the first side portion extrusion mechanism includes a top groove 25 opened at a side portion of the connecting pressing plate 34, a top hole 26 penetrating to the outside is opened on an inner wall of one side of the top groove 25, a top plate 24 is slidably installed in the top groove 25, a top rod 27 is installed at a side of the top plate 24 close to the top hole 26, and one end of the top rod 27 penetrates through the top hole 26. Optionally, the connecting block 37 is installed on the side portion of the ejector rod 27, a first pressure hole is formed in the side portion of the connecting block 37, a first convex column 38 is installed in the first pressure hole in a sliding manner, a first spring 39 is sleeved on the first convex column 38, two ends of the first spring 39 are installed on the side portions, close to each other, of the first convex column 38 and the connecting block 37 respectively, the ejector rod 27 is connected with the transmission mechanism, and the first convex column 38 is installed in cooperation with the sensing mechanism. When the two connecting pressing plates 34 are just contacted with the two sides of the PCB, the two top plates 24 are extruded to enter the two top grooves 25, so that the two top rods 27 are far away from each other, the two top rods 27 are far away from each other to drive the connecting block 37 to move outwards, the connecting block 37 moves to enable the first spring 39 to generate compression deformation, the first convex column 38 is pushed under the reaction force of the first spring 39 to enable the first convex column 38 to compress the pressure sensor 41, the pressure sensor 41 senses the pressure, when the pressure reaches a certain value, the controller 35 controls the first motor 9 to be closed, and at the moment, the two sides of the PCB are compressed by proper pressure; the pressure value at which the first motor 9 is controlled to turn off is a preset value of the controller 35, which may be a specific pressure value or range of values.
As shown in fig. 1, 3 and 7, the transmission mechanism includes a downward moving groove 29 arranged at the side of the connecting pressing plate 34, a limiting block 32 is arranged in the downward moving groove 29 in a sliding manner, the downward moving groove 29 is a cross-shaped sliding groove (not shown), the limiting block 32 is a cross-shaped sliding block (not shown), the cross-shaped sliding block is arranged in the cross-shaped sliding groove in a sliding manner, the top of the ejector rod 27 is rotatably provided with a rotating rod 28, and the top end of the rotating rod 28 is rotatably arranged at one end of the limiting block 32. Limiting rod 30 is installed at the top of stopper 32, has seted up spacing hole 31 on the top side inner wall of groove 29 that moves down, and limiting rod 30's one end runs through spacing hole 31, and stopper 32 is connected with top extrusion mechanism, presses down stopper 30 and can carry out spacingly to stopper 32. The two push rods 27 move outwards to drive the two rotating rods 28 to rotate, the two rotating rods 28 rotate to drive the two limiting blocks 32 to move downwards, the two limiting blocks 32 move downwards in the downward moving grooves 29 to slide downwards, and meanwhile, the two limiting blocks 32 move to drive the two top pressing plates 33 to move downwards, so that the pressing is facilitated.
As shown in fig. 1, 7 and 8, the top pressing mechanism includes a top pressing plate 33 installed on the limiting block 32 and far away from one end of the rotating rod 28, two second pressing holes are formed in the top of the top pressing plate 33, second convex columns 44 are installed in the two second pressing holes in a sliding mode, an installation pressing plate 43 is installed at the bottom ends of the two second convex columns 44, second springs 42 are sleeved on the two second convex columns 44, and the top ends and the bottom ends of the second springs 42 are installed on the side portions, close to each other, of the top pressing plate 33 and the installation pressing plate 43 respectively. Two top clamp plates 33 move down and compress second spring 42 to make installation clamp plate 43 move down, and when installation clamp plate 43 contacts with the top of PCB board, because two second springs 42 take place deformation, its reaction force also compresses tightly the top of PCB board, and the later stage of being convenient for is processed.
As shown in fig. 1, the second side pressing mechanism includes two third pressing holes opened on the side of the second pressing block 23, third convex columns 45 are slidably installed in the two third pressing holes, a movable pressing plate 47 is installed at one end of each of the two third convex columns 45, third springs 46 are sleeved on the two third convex columns 45, one ends of the two third springs 46 are installed on the side of the second pressing block 23, and the other ends of the two third springs 46 are installed on the sides of the two third convex columns 45. Two second briquetting 23 are close to each other simultaneously and drive two movable pressing plate 47 and are close to each other, and two movable pressing plate 47 are close to each other and drive four third convex posts 45 and remove to make four third springs 46 take place deformation, compress tightly the other both sides of PCB board under four third springs 46's effort, thereby can fix the four sides of PCB board simultaneously, fix more firm, and fixed back position PCB board is in the intermediate position.
As shown in fig. 3, the sensing mechanism includes an L-shaped rod 40 mounted on the side of the connecting pressing plate 34, a pressure sensor 41 is mounted on the side of the L-shaped rod 40, the pressure sensor 41 abuts against one end of the first convex column 38, the pressure sensor 41 is connected with the controller 35, and the controller 35 is connected with the first motor 9; as shown in fig. 6, a second motor 49 is installed on the side of the fixed plate 48, a rotating shaft is rotatably installed on the side of the fixed plate 48, parallel rods 50 are fixedly installed on the output end of the second motor 49 and the rotating shaft, movable shafts are rotatably installed on the sides of the two parallel rods 50, parallel plates 51 are installed at one ends of the two movable shafts, the parallel plates 51 are arranged in parallel with the top of the positioning plate 1, pneumatic suction cups 52 are installed at the bottoms of the parallel plates 51, and the pneumatic suction cups 52 are connected with the controller 35. Start second motor 49 and can drive parallel bar 50 and rotate, parallel bar 50 rotates and drives the loose axle, parallel plate 51 and another parallel bar 50 and rotate, when parallel plate 51 and PCB board contact, can hold the PCB board through starting pneumatic suction cup 52, then start second motor 49 and make parallel plate 51 rotate to make the PCB board drive to the top of locating plate 1, then close pneumatic suction cup 52 and can make the PCB board put on the top of locating plate 1.
The application also discloses a positioning method of the positioning jig for the PCB, which comprises the following steps:
s1, starting a second motor 49 to drive a parallel rod 50 connected with the second motor to rotate, wherein the parallel rod 50 rotates to drive a movable shaft, a parallel plate 51 and another parallel rod 50 to rotate, when the parallel plate 51 is contacted with a PCB, the PCB can be sucked by starting a pneumatic suction cup 52, then starting the second motor 49 to drive the parallel plate 51 to rotate, so that the PCB is driven to the top of the positioning plate 1, and then closing the pneumatic suction cup 52 to place the PCB on the top of the positioning plate 1;
s2, starting the first motor 9 to drive the connecting rod 8 to rotate, the connecting rod 8 rotates to drive the reverse threaded rod 6 and the positive threaded rod 7 to rotate, so that the reverse threaded block 5 and the positive threaded block 4 approach each other, the reverse threaded block 5 and the positive threaded block 4 approach each other to drive the two first sliders 3 and the two connecting pressing plates 34 to approach each other, when the two connecting pressing plates 34 just contact with the two sides of the PCB, the two top plates 24 are extruded into the two top grooves 25, so that the two top rods 27 are separated from each other, the two top rods 27 are separated from each other to drive the two connecting blocks 37 to move, the two connecting blocks 37 move to deform the two first springs 39, the two first convex columns 38 are pushed under the reactive force of the two first springs 39 to press the two pressure sensors 41, so that the two pressure sensors 41 sense the pressure, when the pressure reaches a certain value, the controller 35 controls the first motor 9 to close, at the moment, the two sides of the PCB are just compressed by proper pressure;
s3, wherein the positive thread block 4 moves to drive the connecting plate 10 to move, the connecting plate 10 moves to drive the thread groove 15, the two extrusion rods 14, the two guide rods 12 and the two connecting blocks 13 to move, so that the two pulling rods 19 rotate, the two pulling rods 19 rotate to drive the two second sliders 22 to respectively slide on the two sliding rods 21, the two second sliders 22 move to respectively drive the two second pressing blocks 23 to move, the two second pressing blocks 23 simultaneously approach to each other to drive the two movable pressing plates 47 to approach to each other, the two movable pressing plates 47 approach to each other to drive the four third convex columns 45 to move, so that the four third springs 46 deform and press the other two sides of the PCB under the action of the four third springs 46, so that the four sides of the PCB can be simultaneously fixed, the fixing is more stable, and the PCB is located at the middle position after the fixing;
s4, the two ejector rods 27 move to drive the two rotating rods 28 to rotate, the two rotating rods 28 rotate to drive the two limiting blocks 32 to move, the two limiting blocks 32 move to drive the two top pressing plates 33 to move downwards, the two top pressing plates 33 move to drive the two second convex columns 44 and the mounting pressing plate 43 to move downwards, when the mounting pressing plate 43 is in contact with the top of the PCB, the two second springs 42 deform, and the top of the PCB can be pressed under the reaction force of the two second springs 42, so that the later-stage processing is facilitated;
s5, when the length and the width of the PCB are different, the knob 36 is rotated to drive the adjusting stud 18 to rotate, the adjusting stud 18 moves spirally in the thread groove 15, the stud 18 moves spirally to drive the rotating disc 16 to rotate and move simultaneously, the rotating disc 16 moves to enable the inner wall of the annular rotating groove 17 to extrude the two extrusion rods 14 so as to enable the two extrusion rods 14 to move, the two extrusion rods 14 move to drive the two connecting blocks 13 to move, the two pulling rods 19 rotate to drive the two second sliding blocks 22 to move, the positions of the two second sliding blocks 22 moving to drive the two second pressing blocks 23 to change, and therefore the PCB with different sizes can be stably fixed at the same time.
It is further emphasized that components that are in direct or potential contact with the PCB board need to be pre-treated with a spray-on polyurethane elastomer prior to installation. In the prior art, the process steps of sanding with sand paper or strong acid and alkaline corrosion are often used in the later operation. Therefore, it is necessary to avoid fatigue damage to the edges of the PCB due to repeated rubbing, and the epoxy resin coating used in the early stage has good chemical resistance, excellent adhesion to various substrates, and excellent toughness and water resistance, but is not resistant to rubbing, and often shows a brittle failure state and is peeled off from the substrate. The polyurethane elastomer is a high-molecular synthetic material with the performance between that of rubber and plastic, and is characterized by wide hardness adjustment range, elasticity of rubber, hardness of metal, mechanical property, wear resistance and rebound resilience. Through years of research and development, the original weak point is not resistant to high temperature and strong acid and alkali corrosion, and the method is improved greatly. The components after the spraying pretreatment can basically meet the requirements of special working conditions, and the durability of the PCB and the fixture is obviously improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a positioning jig that PCB board was used, includes locating plate (1), its characterized in that: the top of the positioning plate (1) is provided with two second pressing blocks (23) and two connecting pressing plates (34) in a sliding manner, the two second pressing blocks (23) and the two connecting pressing plates (34) are arranged in a rectangular manner, the two mutually close side parts of the connecting pressing plates (34) are provided with a first side part extrusion mechanism and a top part extrusion mechanism respectively, the first side part extrusion mechanism and the top part extrusion mechanism which are positioned on the same connecting pressing plate (34) are connected through a transmission mechanism, the side part of one transmission mechanism is provided with a pressure sensing mechanism, the two connecting pressing plates (34) are connected through a screw rod driving mechanism, the screw rod driving mechanism is provided with an adjusting mechanism, the adjusting mechanism is provided with two pulling mechanisms, the two pulling mechanisms are respectively connected with the two second pressing blocks (23), and the side parts of the two second pressing blocks (23) are provided with a second side part extrusion mechanism respectively, a controller (35) is installed at the bottom of the positioning plate (1), and the controller (35), the pressure sensing mechanism and the screw rod driving mechanism are connected; the screw rod driving mechanism comprises a first sliding hole (2) formed in the top of the positioning plate (1), two first sliding blocks (3) are arranged in the first sliding hole (2) in a sliding mode, the tops of the two first sliding blocks (3) are connected with the bottoms of the two connecting pressing plates (34) respectively, a positive thread block (4) and a negative thread block (5) are arranged at the bottoms of the two first sliding blocks (3) respectively, positive thread holes and negative thread holes are formed in the lateral portions of the positive thread block (4) and the negative thread block (5) respectively, a positive threaded rod (7) and a negative threaded rod (6) are arranged in the positive thread hole and the negative thread hole in a threaded mode respectively in a threaded mode, the positive threaded rod (7) is connected with one end, close to the negative threaded rod (6), of the negative threaded rod (6) is far away from one end of the positive threaded rod (7), and a connecting rod (8) is arranged at one end, fixed plate (48) are installed to the lateral part of locating plate (1), first motor (9) are installed to the bottom of fixed plate (48), the one end of connecting rod (8) with the output of first motor (9) is connected, connecting plate (10) are installed to the bottom of positive thread piece (4), install the lateral part of connecting plate (10) adjustment mechanism.
2. The positioning jig for the PCB of claim 1, wherein: adjusting mechanism is including seting up in thread groove (15) of connecting plate (10) lateral part, double-screw bolt (18) are installed to thread groove (15) internal thread, the one end of double-screw bolt (18) extends to thread groove (15) are outer and install knob (36), it has two spaced rolling disc (16) to fix the cover on double-screw bolt (18), form into annular rotating groove (17) between rolling disc (16), two guide way (11) have been seted up to the lateral part of connecting plate (10), two equal slidable mounting has guide bar (12) in guide way (11), two connecting block (13) are all installed to the one end of guide bar (12), two connecting block (13) are close to each other the lateral part install two squeeze stem (14), two squeeze stem (14) are located in annular rotating groove (17), double-screw bolt (18) are located two between squeeze stem (14), the two connecting blocks (13) are respectively connected with the two pulling mechanisms.
3. The positioning jig for the PCB of claim 2, wherein: pulling mechanism including rotate install in pulling rod (19) of connecting block (13) lateral part, the lateral part of pulling rod (19) is provided with sets up in second draw runner (20) at locating plate (1) top, install slide bar (21) on the both sides inner wall of second draw runner (20), second slider (22) have been cup jointed in the slip on slide bar (21), pulling rod (19) are kept away from the one end rotation of connecting block (13) install in on the lateral part of second slider (22), the top of second slider (22) install in on the bottom of second briquetting (23).
4. The positioning jig for the PCB of claim 1, wherein: the first side portion extrusion mechanism comprises a top groove (25) arranged on the side portion of the connecting pressing plate (34), a top hole (26) penetrating to the outside is formed in the inner wall of one side of the top groove (25), a top plate (24) is slidably arranged in the top groove (25), a top rod (27) is arranged on one side, close to the top hole (26), of the top plate (24), one end of the top rod (27) penetrates through the top hole (26), a connecting block (37) is arranged on the side portion of the top rod (27), a first pressure hole is formed in the side portion of the connecting block (37), a first convex column (38) is slidably arranged in the first pressure hole, a first spring (39) is sleeved on the first convex column (38), two ends of the first spring (39) are respectively arranged on the first convex column (38) and the side portion, close to the connecting block (37), the top rod (27) is connected with the transmission mechanism, the first male post (38) is cooperatively mounted with the sensing mechanism.
5. The positioning jig for the PCB of claim 4, wherein: drive mechanism is including offering in moving down groove (29) of connecting clamp plate (34) lateral part, sliding mounting has stopper (32) in moving down groove (29), the top of ejector pin (27) is rotated and is installed dwang (28), the top of dwang (28) rotate install in one of stopper (32) is served, stopper (32) with top extrusion mechanism connects.
6. The positioning jig for the PCB of claim 5, wherein: top extrusion mechanism including install in stopper (32) are kept away from top clamp plate (33) of dwang (28) one end, two second pressure holes have been seted up at the top of top clamp plate (33), two equal slidable mounting has second convex post (44), two in the second pressure hole installation clamp plate (43), two are installed to the bottom of second convex post (44) all cup jointed second spring (42) on second convex post (44), the top and the bottom of second spring (42) install respectively in top clamp plate (33) with on the lateral part that installation clamp plate (43) are close to each other.
7. The positioning jig for the PCB of claim 1, wherein: second side portion extrusion mechanism is including offering in two third pressure holes of second briquetting (23) lateral part, two equal slidable mounting has third convex post (45), two in the third pressure hole activity clamp plate (47), two are installed to the one end of third convex post (45) all cup jointed third spring (46) on third convex post (45), two the one end of third spring (46) install in on the lateral part of second briquetting (23), two the other end of third spring (46) is installed in two on the lateral part of third convex post (45).
8. The positioning jig for the PCB of claim 4, wherein: the induction mechanism comprises an L-shaped rod (40) which is arranged on the side of the connecting pressing plate (34), a pressure sensor (41) is arranged on the side of the L-shaped rod (40), the pressure sensor (41) is abutted against one end of the first convex column (38), the pressure sensor (41) is connected with the controller (35), the controller (35) is connected with the first motor (9), a second motor (49) is arranged on the side of the fixing plate (48), a rotating shaft is arranged on the side of the fixing plate (48) in a rotating manner, parallel rods (50) are fixedly arranged on the output end of the second motor (49) and the rotating shaft, movable shafts are arranged on the side of the parallel rods (50) in a rotating manner, parallel plates (51) are arranged at one ends of the movable shafts, and the parallel plates (51) are arranged in parallel with the top of the positioning plate (1), and a pneumatic sucker (52) is arranged at the bottom of the parallel plate (51), and the pneumatic sucker (52) is connected with the controller (35).
9. A method for positioning a positioning jig for a PCB according to any one of claims 1 to 8, the method comprising:
s1, starting a second motor (49) to drive a parallel rod (50) connected with the second motor (49) to rotate, driving a movable shaft, a parallel plate (51) and another parallel rod (50) to rotate by rotating one parallel rod (50), sucking the PCB by starting a pneumatic sucker (52) when the parallel plate (51) is contacted with the PCB, then starting the second motor (49) to drive the parallel plate (51) to rotate, so that the PCB is driven to the top of the positioning plate (1), and then closing the pneumatic sucker (52) to place the PCB on the top of the positioning plate (1);
s2, a first motor (9) is started to drive a connecting rod (8) to rotate, the connecting rod (8) rotates to drive a reverse threaded rod (6) and a positive threaded rod (7) to rotate, so that a reverse threaded block (5) and a positive threaded block (4) are close to each other, the reverse threaded block (5) and the positive threaded block (4) are close to each other to drive two first sliding blocks (3) and two connecting pressing plates (34) to be close to each other, when the two connecting pressing plates (34) are just contacted with two side portions of a PCB (printed circuit board), two top plates (24) are extruded to enter two top grooves (25), so that two top rods (27) are far away from each other, the two top rods (27) are far away from each other to drive two connecting blocks (37) to move, the two connecting blocks (37) move to enable the two first springs (39) to deform, and the two first convex columns (38) are pushed under the counter-acting force of the two first springs (39) to enable the two pressure sensors (41) to be compressed, therefore, the two pressure sensors (41) sense the pressure, when the pressure reaches a certain value, the controller (35) controls the first motor (9) to be closed, and the two sides of the PCB are pressed tightly by proper pressure;
s3, wherein the positive thread block (4) moves to drive the connecting plate (10) to move, the connecting plate (10) moves to drive the thread groove (15), the two extrusion rods (14), the two guide rods (12) and the two connecting blocks (13) to move, so that the two pulling rods (19) rotate, the two pulling rods (19) rotate to drive the two second sliders (22) to respectively slide on the two sliding rods (21), the two second sliders (22) move to respectively drive the two second pressing blocks (23) to move, the two second pressing blocks (23) simultaneously approach to each other to drive the two movable pressing plates (47) to mutually approach, the two movable pressing plates (47) mutually approach to drive the four third convex columns (45) to move, so that the four third springs (46) are deformed, the other two sides of the PCB are pressed under the acting force of the four third springs (46), so that the four sides of the PCB are simultaneously fixed, the fixing is more stable, and the PCB is positioned in the middle after the fixing;
s4, the two ejector rods (27) move to drive the two rotating rods (28) to rotate, the two rotating rods (28) rotate to drive the two limiting blocks (32) to move, the two limiting blocks (32) move to drive the two top pressing plates (33) to move downwards, the two top pressing plates (33) move to drive the two second convex columns (44) and the installation pressing plate (43) to move downwards, when the installation pressing plate (43) is contacted with the top of the PCB, the two second springs (42) deform, the top of the PCB is also pressed under the reaction force of the two second springs (42), and later-stage processing is facilitated;
s5, when the lengths and the widths of the PCBs are different, by rotating the knob (36), the knob (36) rotates to drive the adjusting stud (18) to rotate, the adjusting stud (18) moves spirally in the thread groove (15), the stud (18) moves spirally to drive the rotating disc (16) to rotate and move simultaneously, the rotating disc (16) moves to enable the inner wall of the annular rotating groove (17) to extrude the two extrusion rods (14) to move, the two extrusion rods (14) move to drive the two connecting blocks (13) to move, and further the two pull rods (19) rotate, the two pull rods (19) rotate to drive the two second sliders (22) to move, the two second sliders (22) move to drive the positions of the two second press blocks (23) to change, and accordingly the PCBs of different sizes are simultaneously and stably fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210559793.5A CN114650661B (en) | 2022-05-23 | 2022-05-23 | Positioning jig for PCB and positioning method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210559793.5A CN114650661B (en) | 2022-05-23 | 2022-05-23 | Positioning jig for PCB and positioning method thereof |
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| Publication Number | Publication Date |
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| CN114650661A CN114650661A (en) | 2022-06-21 |
| CN114650661B true CN114650661B (en) | 2022-08-09 |
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| CN202210559793.5A Expired - Fee Related CN114650661B (en) | 2022-05-23 | 2022-05-23 | Positioning jig for PCB and positioning method thereof |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4141655B2 (en) * | 2001-04-03 | 2008-08-27 | 日立ビアメカニクス株式会社 | Work fixture and printed circuit board processing machine equipped with the same |
| CN210959005U (en) * | 2019-12-20 | 2020-07-07 | 淮安信息职业技术学院 | Circuit board etching positioning device for electronic major |
| CN212183827U (en) * | 2020-04-29 | 2020-12-18 | 苏州品展电子科技有限公司 | Circuit board mounting fixing frame |
| CN212812168U (en) * | 2020-08-14 | 2021-03-26 | 深圳市同创鑫电子电路有限公司 | Fixing mechanism for fine processing of circuit board |
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