Circuit board mounting device

Abstract

The present invention relates to the field of circuit board patch technology, specifically to a circuit board patch device, including a shell, a patch assembly is slidably connected to the top of the inner side of the shell, the patch assembly is movably connected to the outer surface of a cam, a driving assembly is provided in the middle of the shell, the driving assembly runs through the middle of the sliding assembly, a clamping assembly is movably connected to the bottom of the sliding assembly, and a clamping assembly is provided inside the cam. The improved circuit board patch device achieves the purpose of adjusting the spacing of the patch assemblies through the rotation of the cam, making the patch device more flexible. While the patch assembly is in operation, it also drives the clamping claw to inflate and clamp the circuit board. The forward and reverse rotation of the driving assembly can achieve the expansion and contraction of the forward and reverse groups of the clamping assemblies, the displacement of ratchet one and ratchet two, and the rotation of the cam to adjust the spacing of the patch assemblies, and the movement and reset of the sliding assembly and the clamping assembly, which greatly saves the cost required for production.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board mounting, in particular to a circuit board mounting device. Background Art

[0002] A placement machine, also known as a mounter, is a device that accurately places surface mount components on PCB pads by moving the placement head. The placement machine is used to achieve high-speed, high-precision, fully automatic placement of components. It is the most critical and complex equipment in the entire SMT production. The placement machine has developed from an early low-speed mechanical placement machine to a high-speed optical alignment placement machine, and has developed towards a multi-functional, flexible connection modularization, but the existing technology still has shortcomings. Therefore, we have launched a circuit board placement device.

[0003] The existing patent (publication number: CN115135029B) discloses a patch machine, including a machine body, a shell is provided on the machine body, an inlet and an outlet are respectively provided at both ends of the length direction of the shell, the machine body extends out of the shell at the inlet and the outlet respectively, a conveyor belt is provided on the machine body, a patch mechanism is installed in the shell, the patch mechanism includes a driving member, a mounting frame, a patch head and a clamping member, the driving member is installed on the shell, the mounting frame is installed on the driving member, the driving member drives the mounting frame to slide towards or away from the conveyor belt, the patch head is arranged on the mounting frame, there are several clamping members, and several of the clamping members are evenly arranged on the mounting frame around the patch head. The application has the effect of reducing the probability of circuit board deviation when mounting components. When the above technical solution is used, the patch is placed on the circuit board for patching by using a suction nozzle, but the spacing between the suction nozzles is fixed. In actual use, it is often necessary to change the spacing between the patches according to different needs. The patch machine cannot meet the requirements and has poor adaptability. Summary of the invention

[0004] The object of the present invention is to provide a circuit board mounting device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a circuit board patch device, comprising a shell, a patch assembly is slidably connected to the top of the inner side of the shell, the patch assembly is movably connected to the outer surface of a cam, a driving assembly is provided in the middle of the shell, the driving assembly runs through the middle of the sliding assembly, a clamping assembly is movably connected to the bottom of the sliding assembly, and a clamping assembly is provided inside the cam;

[0006] The driving assembly includes a motor fixedly connected to one side of the shell, the output end of the motor passes through the side wall of the shell and is connected to the driving shaft, the driving shaft is composed of a threaded rod and a transmission shaft, a limiting groove is provided on the outer surface of the transmission shaft, the transmission shaft is slidingly connected to the ratchet wheel 1 and the ratchet wheel 2 respectively through the limiting groove, the ratchet wheel 1 and the ratchet wheel 2 are connected by a double connecting rod, the side of the ratchet wheel 2 away from the ratchet wheel 1 is fixedly connected with a spring telescopic rod, the end of the spring telescopic rod away from the ratchet wheel 2 is fixedly connected with a mounting ring, one side of the mounting ring is fixedly connected with two horizontal connecting rods, and a rotating seat is fixedly connected between the ends of the two horizontal connecting rods away from the mounting ring;

[0007] The engaging assembly includes a rotating ring rotatably connected to the inside of the cam, a contact block is welded to the outer ring of the rotating ring, rotating grooves are opened on both sides of the rotating ring, a connecting rope is fixedly connected to the inner ring of the rotating ring, one end of the connecting rope is connected to one side of the pawl, two rotating shafts are fixedly connected to both sides of the pawl, and torsion springs are sleeved on the outer sides of the two rotating shafts.

[0008] Preferably, the sliding assembly includes a crescent ring threadedly connected to the middle part of the threaded rod, an arc-shaped groove is opened in the middle part of the outer ring of the crescent ring, a welding rod is fixedly connected to the side of the crescent ring close to the cam, and an extrusion block is fixedly connected to the end of the welding rod away from the crescent ring.

[0009] Preferably, both ends of the extrusion block have one side with an inclined surface structure, and the two inclined surfaces are symmetrical about the center of the extrusion block, and the extrusion block is slidably arranged inside the through groove.

[0010] Preferably, the outer surface of the cam is respectively provided with a connecting groove and a spiral groove, the inner side of the cam is respectively provided with a circular mounting groove and a through groove, both walls of the circular mounting groove are integrally formed with a limiting ring, both ends of the cam are fixedly connected with a guide rod, a fixing block is welded to the inner wall of the outer ring of the circular mounting groove, and an arc spring is fixedly connected to one side of the fixing block.

[0011] Preferably, the connecting groove is located in the middle of the outer surface of the cam, and the spiral grooves are distributed on both sides of the connecting groove, and the pitches of the spiral grooves are different. The closer the spiral groove is to the connecting groove, the smaller the pitch is. The spiral groove is three-fifths of a turn.

[0012] Preferably, the drive shaft passes through the middle of the cam, and the area of ​​the drive shaft located inside the cam is the transmission shaft, and both ends of the transmission shaft are respectively connected to a section of threaded rod, and the thread directions of the two threaded rods are opposite.

[0013] Preferably, a through hole is opened in the middle of the rotating seat, and the diameter of the through hole is larger than the diameter of the threaded rod, and the rotating seat and the crescent ring are rotatably connected.

[0014] Preferably, the clamping assembly includes an arc-shaped slider slidably connected to the inside of the arc-shaped slide groove, the arc-shaped slider is fixedly connected to the top of the vertical column, the bottom end of the vertical column is fixedly connected to a sealing box, both sides of the bottom surface of the sealing box are fixedly connected to limit strips, the top surface of the sealing box is penetrated by a piston rod, one side of the top of the piston rod is fixedly connected to a multi-stage telescopic rod, the bottom end of the piston rod is fixedly connected to a lifting plate, the middle part of the bottom surface of the lifting plate is fixedly connected to a return spring, the bottom end of the return spring is fixedly connected to the piston plate, the bottom of one side of the sealing box is connected to a fixed tube, the end of the fixed tube away from the sealing box is connected to a clamping claw, and a plurality of pleated grooves are provided on the side of the clamping claw close to the fixed tube.

[0015] Preferably, the inner top surface and rear wall of the shell are provided with T-shaped grooves, the inner bottom of the shell is fixedly connected with a placing table, the two sides of the placing table are fixedly connected with limiting rods between the inner walls of the shell on both sides, and the middle part of the inner rear wall of the shell is fixedly connected with a supporting plate, the outer side of the supporting plate is an annular structure, and the annular part of the supporting plate is embedded in the connecting groove in the middle part of the cam and is rotatably connected with the cam.

[0016] Preferably, the patch assembly includes a slider one and a slider two which are respectively slidably connected inside two groups of T-shaped slide grooves, the slider one is fixedly connected to the top end of the tilting rod, the tilting rod passes through the middle of the arc plate, the bottom of the arc plate is connected to the middle of the top surface of the linear slide, the linear slide is fixedly connected to a cylinder through a bottom movable seat, the output end of the cylinder is fixedly connected to a circular plate, the bottom surface of the circular plate is fixedly connected to a vacuum pump, the bottom surface of the vacuum pump is connected to an air nozzle, one end of the linear slide is connected to the slider two, and the bottom end of the tilting rod is slidably connected to the inside of the spiral groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the present invention, multiple groups of patch components are provided to increase the number of single patches, and the driving component is used to drive the cam to rotate to achieve the purpose of adjusting the spacing of the patch components, thereby making the patch device more flexible and able to meet batch patches with different spacing requirements.

[0019] In the present invention, the air cylinder in the patch assembly is used to push the air nozzle down to place the patch on the circuit board. In the process of the air cylinder pushing the air nozzle down, the multi-stage telescopic rod is also used to drive the piston plate to descend, so that the gas in the sealing box is squeezed into the clamping claws, and the clamping claws are inflated to clamp and fix the circuit board. The inflatable clamping claws are safer and are not easy to damage the circuit board. Moreover, under the action of the pleated grooves, the two ends of the clamping claws will bend toward the direction of the circuit board in the inflated state, so as to have a better clamping effect on the circuit board.

[0020] In the present invention, the expansion and contraction of the two groups of positive and negative engaging components, the displacement of ratchet one and ratchet two, and the rotation of the cam are achieved only through the forward and reverse rotation of a motor in the driving component, thereby adjusting the spacing of the patch components, and moving and resetting the sliding component and the clamping component, which greatly saves the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention;

[0022] Figure 2 It is a schematic diagram of a front view cross-sectional three-dimensional structure of the present invention;

[0023] Figure 3 It is a right-side sectional three-dimensional structural schematic diagram of the present invention;

[0024] Figure 4 It is a schematic diagram of a partial cross-section of the main view of the three-dimensional structure of the housing of the present invention;

[0025] Figure 5 It is a schematic diagram of a partial cross-section of the three-dimensional structure of the clamping assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping jaw of the present invention in a top view;

[0027] Figure 7 This is a schematic diagram of the main three-dimensional structure of the patch assembly of the present invention;

[0028] Figure 8 It is a left-side stereoscopic structural schematic diagram of the sliding assembly of the present invention;

[0029] Fig. 9 For the present invention Figure 8 A is an enlarged structural diagram;

[0030] Fig.10 It is a schematic diagram of the three-dimensional structure of the cam of the present invention when viewed from above;

[0031] Fig.11 For the present invention Fig.10 The enlarged structural diagram at B in FIG.

[0032] Fig.12 For the present invention Fig.11 The enlarged structural diagram at C in FIG.

[0033] Fig.13 It is a schematic diagram of the right-side cross-sectional three-dimensional structure of the front assembly of the present invention;

[0034] Fig.14 It is a right-side sectional three-dimensional structural schematic diagram of the reverse-assembled locking assembly of the present invention;

[0035] Fig.15It is a schematic diagram of the three-dimensional structure of the support plate of the present invention from the right side.

[0036] In the figure: 1. shell; 101. T-shaped slide; 102. placing table; 103. limiting rod; 104. supporting plate; 2. patch assembly; 201. slider 1; 202. slider 2; 203. tilting rod; 204. arc plate; 205. linear slide; 206. cylinder; 207. circular plate; 208. vacuum pump; 209. air nozzle; 3. cam; 301. connecting groove; 302. spiral groove; 303. circular mounting groove; 304. through groove; 305. limiting ring; 306. guide rod; 307. fixing block; 308. arc spring; 4. driving assembly; 401. motor; 402. driving shaft; 403. transmission shaft; 404. limiting groove; 405. ratchet 1; 406. double connecting rod; 407. ratchet 2; 408. 8. Spring telescopic rod; 409. Mounting ring; 4010. Horizontal connecting rod; 4011. Rotating seat; 4012. Threaded rod; 5. Sliding assembly; 501. Crescent ring; 502. Arc slide groove; 503. Welding rod; 504. Extrusion block; 6. Clamping assembly; 601. Arc slide block; 602. Vertical column; 603. Sealing box; 604. Limiting strip; 605. Piston rod; 606. Multi-stage telescopic rod; 607. Lifting plate; 608. Reset spring; 609. Piston plate; 6010. Fixed tube; 6011. Clamping claw; 6012. Pleated groove; 7. Clamping assembly; 701. Rotating ring; 702. Contact block; 703. Rotating groove; 704. Connecting rope; 705. Ratchet; 706. Rotating shaft; 707. Torsion spring. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figures 1 to 15 The present invention provides a technical solution: a circuit board patch device, including a shell 1, a patch component 2 is slidably connected to the top of the inner side of the shell 1, the patch component 2 is movably connected to the outer surface of a cam 3, a driving component 4 is provided in the middle of the shell 1, the driving component 4 runs through the middle of a sliding component 5, a clamping component 6 is movably connected to the bottom of the sliding component 5, and a locking component 7 is provided inside the cam 3.

[0039] In this embodiment, Figure 1 , Figure 2 , Figure 8 and Fig. 9As shown, the driving assembly 4 includes a motor 401 fixedly connected to one side of the housing 1, the output end of the motor 401 passes through the side wall of the housing 1 and is connected to the driving shaft 402, the driving shaft 402 is composed of a threaded rod 4012 and a transmission shaft 403, the outer surface of the transmission shaft 403 is provided with a limiting groove 404, the transmission shaft 403 is slidingly connected to the ratchet wheel 1 405 and the ratchet wheel 2 407 through the limiting groove 404, the ratchet wheel 1 405 and the ratchet wheel 2 407 are connected by a double connecting rod 406, the side of the ratchet wheel 2 407 away from the ratchet wheel 1 405 is fixedly connected with a spring telescopic rod 408, and the end of the spring telescopic rod 408 away from the ratchet wheel 2 407 is fixedly connected with a mounting ring 409. Two horizontal connecting rods 4010 are fixedly connected to one side of the mounting ring 409, and a rotating seat 4011 is fixedly connected between the ends of the two horizontal connecting rods 4010 away from the mounting ring 409; the motor 401 can drive the transmission shaft 403 to rotate by driving the threaded rod 4012 in the driving shaft 402 to rotate, and the rotation of the transmission shaft 403 will drive the ratchet 1 405 and the ratchet 2 407 to rotate simultaneously through the limit groove 404, and the ratchet 2 407 will drive the two horizontal connecting rods 4010 to rotate synchronously through the spring telescopic rod 408 and the mounting ring 409, and the horizontal connecting rod 4010 will drive the rotating seat 4011 to rotate, and the rotation directions of the ratchet 1 405 and the ratchet 2 407 are opposite.

[0040] In this embodiment, Figure 8 , Fig.10 , Fig.11 , Fig.13 and Fig.14As shown, the engaging assembly 7 includes a rotating ring 701 rotatably connected to the inside of the cam 3, the outer ring of the rotating ring 701 is welded with a contact block 702, both sides of the rotating ring 701 are provided with rotating grooves 703, the inner ring of the rotating ring 701 is fixedly connected with a connecting rope 704, one end of the connecting rope 704 is connected to one side of a ratchet 705, both sides of the ratchet 705 are fixedly connected with two rotating shafts 706, and the outer sides of the two rotating shafts 706 are sleeved with torsion springs 707; the engaging assembly 7 is divided into two groups, one positive and one negative, the two groups of engaging assemblies 7 have the same structure, but the ratchet 705 in the two groups of engaging assemblies 7 are in opposite directions, and the contact blocks 702 of the outer rings of the rotating rings 701 in the two groups of engaging assemblies 7 are symmetrically distributed about the extrusion block 504 in the right viewing angle, and the positive group engaging assemblies The coupling component 7 is close to the end of the cam 3, and the reverse coupling component 7 is close to the center of the cam 3. There are several connecting ropes 704, and the several connecting ropes 704 are equiangularly distributed on the inner circle of the rotating ring 701. The contact block 702 is in contact with the extrusion block 504, and the side where the contact block 702 contacts the extrusion block 504 is an inclined structure. When the extrusion block 504 moves toward the end of the cam 3, it gradually contacts the contact block 702 of the outer circle of the rotating ring 701 in the positive coupling component 7, and the extrusion block 504 squeezes the contact block 702 in the positive coupling component 7. In the right viewing angle, the rotating ring 701 rotates counterclockwise at this time, so that the end of the connecting rope 704 that contacts the inner circle of the rotating ring 701 contacts the ratchet 705 and the connecting The distance between the ends of the rope 704 and the contact end is shortened. At this time, under the action of the torsion spring 707 and the rotating shaft 706, the pawl 705 rotates clockwise with the rotating shaft 706 as the axis, so that the claw tip of the pawl 705 is close to the central axis of the rotating ring 701 and finally contacts with the ratchet wheel 2 407. At this time, the rotation of the ratchet wheel 2 407 can drive the cam 3 to rotate together through the positive group engaging component 7, so as to adjust the distance between the air nozzles 209 in the patch component 2. It should be noted here that the diameter of the hole opened in the middle of the two ends of the cam 3 is larger than the diameter of the mounting ring 409 but smaller than the diameter of the ratchet. When the threaded rod 4012 rotates, it drives the sliding component 5 to move away from the two ends of the cam 3. In the process, the sliding component 5 passes through the rotating seat 4011, the horizontal connecting rod 4010, and the mounting ring 409 and the spring telescopic rod 408 drive the ratchet wheel 2 407 to enter the positive group engaging assembly 7, and then the sliding assembly 5 will continue to move away from the cam 3 for a distance. At this time, the ratchet wheel 2 407 is blocked in the cam 3 and cannot move further because its diameter is larger than the hole at the end of the cam 3. Therefore, the spring telescopic rod 408 is stretched. In this process, the extrusion block 504 continues to move along the axis direction of the cam 3 with the crescent ring 501 through the welding rod 503, and gradually contacts with the contact block 702, so that the pawl 705 is expanded inwardly along the radial direction of the cam 3 to contact the ratchet wheel 2 407. The purpose of such a setting is to enable the crescent ring 501 to be reset to the initial position. If the pawl 705 in the engaging assembly 7 is in an inwardly expanded state at the beginning,When the ratchet wheel 2 407 moves with the crescent ring 501 in the sliding assembly 5 to just contact with the positive group engaging assembly 7, the ratchet wheel 2 407 will immediately drive the cam 3 to rotate. At this time, the cam 3 will drive the crescent ring 501 in the sliding assembly 5 to rotate together under the action of the guide rod 306 at the end, so that the crescent ring 501 and the cam 3 are relatively stationary, and the cam 3 rotates coaxially with the driving shaft 402 under the drive of the ratchet wheel 2 407. Therefore, at this time, the crescent ring 501 and the threaded rod 4012 on the driving shaft 402 are also relatively stationary, and will no longer move along the axis direction of the threaded rod 4012, and cannot be completely reset to the initial position, resulting in deviations when the spacing of the air nozzles 209 in the patch assembly 2 is subsequently adjusted.

[0041] In this embodiment, Figure 1 and Figure 8 As shown, the sliding assembly 5 includes a crescent ring 501 threadedly connected to the middle part of the threaded rod 4012, an arc-shaped sliding groove 502 is opened in the middle part of the outer ring of the crescent ring 501, a welding rod 503 is fixedly connected to the side of the crescent ring 501 close to the cam 3, and an extrusion block 504 is fixedly connected to the end of the welding rod 503 away from the crescent ring 501; when the threaded rod 4012 rotates, it can drive the crescent ring 501 to rotate or move, and the rotation or movement of the crescent ring 501 depends on whether the ratchet 1 405 and the ratchet 2 407 enter the engaging assembly 7 and drive the cam 3 to rotate. When the cam 3 rotates, it will drive the crescent ring 501 through the guide rod 306 at the end. The ring 501 rotates synchronously. At this time, the crescent ring 501 and the threaded rod 4012 are relatively stationary and will not move along the threaded rod 4012, but will rotate coaxially with the threaded rod 4012. If the ratchet is outside the engaging assembly 7, the drive shaft 402 will not contact the cam 3. At this time, the cam 3 is in a stationary state under the restriction of the friction pair plate, and the crescent ring 501 is penetrated by the guide rod 306 at the end of the cam 3. Therefore, when the threaded rod 4012 rotates, the crescent ring 501 cannot drive the cam 3 to rotate, and can only move along the axial direction of the threaded rod 4012. The crescent ring 501 drives the extrusion block 504 to move linearly along the through groove 304.

[0042] In this embodiment, Fig. 9 and Fig.10 As shown, both ends of the squeezing block 504 have one side with an inclined surface structure, and the two inclined surfaces are symmetrical about the center of the squeezing block 504, and the squeezing block 504 is slidably arranged inside the through slot 304; because the initial positions of the contact blocks 702 in the positive group of engaging components 7 and the reverse group of engaging components 7 in the right viewing angle are respectively located on both sides of the squeezing block 504, when the squeezing block 504 reciprocates along the through slot 304, it can squeeze the contact blocks 702 in the positive and reverse groups of engaging components 7 respectively, and expand or contract the pawl 705.

[0043] In this embodiment, Figure 1, Figure 2 and Figure 7 As shown, the outer surface of the cam 3 is respectively provided with a connecting groove 301 and a spiral groove 302, the inner side of the cam 3 is respectively provided with a circular mounting groove 303 and a through groove 304, both walls of the circular mounting groove 303 are integrally formed with a limiting ring 305, both ends of the cam 3 are fixedly connected with a guide rod 306, a fixing block 307 is welded to the inner wall of the outer ring of the circular mounting groove 303, and an arc spring 308 is fixedly connected to one side of the fixing block 307; one end of the arc spring 308 away from the fixing block 307 is connected to the other end of the contact block 702 away from the extrusion block 504 The side is fixedly connected, the guide rod 306 passes through the middle of the crescent ring 501 and is slidably connected to the crescent ring 501, the limiting ring 305 extends to the inside of the rotating groove 703, limiting the rotating ring 701 while allowing the rotating ring 701 to rotate, and the spiral groove 302 can adjust the distance between the inclined rods 203 in the patch assembly 2 when the cam 3 rotates around its own axis, thereby finally adjusting the distance between the air nozzles 209 in the patch assembly 2, making the patch assembly 2 more flexible and able to meet the needs of circuit board patches with different spacings.

[0044] In this embodiment, Figure 7 As shown, the connecting groove 301 is located in the middle of the outer surface of the cam 3, and the spiral grooves 302 are distributed on both sides of the connecting groove 301, and the pitch of the spiral grooves 302 is different. The closer the spiral groove 302 is to the connecting groove 301, the smaller the pitch is, and the spiral groove 302 is three-fifths of a circle; this structure can make the air nozzle 209 close to the end of the cam 3 approach the middle of the cam 3 more quickly when the cam 3 rotates about its own axis, that is, when the rotation angle of the cam 3 is constant, the closer the air nozzle 209 is to the end of the cam 3, the longer the displacement distance is, and conversely, the closer the air nozzle 209 is to the middle of the cam 3, the shorter the displacement distance is, so that the spacing between the air nozzles 209 can be changed.

[0045] In this embodiment, Figure 1 and Figure 2 As shown, the drive shaft 402 passes through the middle of the cam 3, and the area where the drive shaft 402 is located inside the cam 3 is the transmission shaft 403, and the two ends of the transmission shaft 403 are respectively connected with a section of threaded rod 4012, and the thread directions of the two threaded rods 4012 are opposite; when the motor 401 drives the drive shaft 402 to rotate, the two sections of threaded rod 4012 will drive the sliding components 5 on both sides to move in opposite directions, thereby driving the clamping component 6 to clamp or release the circuit board on the top surface of the placement table 102.

[0046] In this embodiment, Figure 8As shown, a through hole is opened in the middle of the rotating seat 4011, and the diameter of the through hole is larger than the diameter of the threaded rod 4012, and the rotating seat 4011 and the crescent ring 501 are rotatably connected; this structure enables the rotating seat 4011 and the crescent ring 501 to rotate relative to each other, because the motor 401 drives the driving shaft 402 to rotate, and the transmission shaft 403 in the middle section of the driving shaft 402 will always drive the two ratchets to rotate synchronously. When the ratchet does not drive the cam 3 to rotate, the crescent ring 501 needs to move along the axial direction of the driving shaft 402. Therefore, the crescent ring 501 cannot rotate at this time, so it is necessary to set the rotating seat 4011 to prevent the ratchet from driving the crescent ring 501 to rotate.

[0047] In this embodiment, Figure 2 , Figure 5 and Figure 6As shown, the clamping assembly 6 includes an arc-shaped slider 601 slidably connected to the inside of the arc-shaped slide groove 502, the arc-shaped slider 601 is fixedly connected to the top of the vertical column 602, the bottom end of the vertical column 602 is fixedly connected to a sealing box 603, both sides of the bottom surface of the sealing box 603 are fixedly connected to limit strips 604, the top surface of the sealing box 603 is penetrated by a piston rod 605, one side of the top end of the piston rod 605 is fixedly connected to a multi-stage telescopic rod 606, the bottom end of the piston rod 605 is fixedly connected to a lifting plate 607, the middle part of the bottom surface of the lifting plate 607 is fixedly connected to a reset spring 608, and the reset spring 608 is fixedly connected to the bottom of the lifting plate 607. The bottom end of the spring 608 is fixedly connected to a piston plate 609, and a fixed tube 6010 is connected to the bottom of one side of the sealing box 603. The end of the fixed tube 6010 away from the sealing box 603 is connected to a clamping claw 6011, and a plurality of folded grooves 6012 are provided on the side of the clamping claw 6011 close to the fixed tube 6010; the end of the multi-stage telescopic rod 606 away from the piston rod 605 is connected to the outermost circular plate 207. When it is necessary to clamp and fix the circuit board on the placement table 102, in the right viewing angle, the motor 401 drives the drive shaft 402 to rotate counterclockwise, and the ratchet wheel 407 is in the The inside of the positive group clamping component 7 rotates counterclockwise, and the cam 3 cannot be driven to rotate by the pawl 705, and the threaded rods 4012 at both ends of the driving shaft 402 will drive the crescent ring 501 in the sliding component 5 to move closer to the cam 3 along the axis direction of the threaded rod 4012, and the crescent ring 501 drives the vertical column 602 to move closer to the cam 3 synchronously through the arc-shaped slider 601, and the vertical column 602 drives the clamping claw 6011 to move synchronously until the clamping claw 6011 fits with both sides of the circuit board on the top surface of the placement table 102, and the motor 401 stops running. Then, under the extension effect of the cylinder 206 in the patch component 2 The piston rod 605 is driven downward by the circular plate 207 and the multi-stage telescopic rod 606, and the piston rod 605 drives the lifting plate 607, the return spring 608 and the piston plate 609 to move downward synchronously, squeezing the air in the sealing box 603 into the clamping jaw 6011, so that the clamping jaw 6011 is inflated and expanded. Due to the influence of the corrugated groove 6012 on one side of the clamping jaw 6011, the expansion of the corrugated groove 6012 after inflation will bend the clamping jaw 6011 to the side away from the corrugated groove 6012, so as to clamp and fix the circuit board. Moreover, the clamp is a flexible clamping jaw 6011, which reduces the probability of damaging the circuit board.

[0048] In this embodiment, Figure 3 and Figure 4As shown, the inner top surface and the rear wall of the shell 1 are both provided with T-shaped grooves 101, the inner bottom of the shell 1 is fixedly connected with a placing platform 102, and the two sides of the placing platform 102 are fixedly connected with the inner walls of the two sides of the shell 1 with limit rods 103, and the middle part of the inner rear wall of the shell 1 is fixedly connected with a supporting plate 104, the outer side of the supporting plate 104 is an annular structure, and the annular part of the supporting plate 104 is embedded in the connecting groove 301 in the middle of the cam 3 and is rotatably connected between the cam 3; friction pair plates are also provided on both sides of the supporting plate 104, and the friction pair plates are in contact with the outer surface of the cam 3, and the friction pair plates can be on the outside of the engaging assembly 7 when both ratchets are on the outside, and the thread When the rod 4012 drives the crescent ring 501 to move in a straight line, the crescent ring 501 is prevented from driving the cam 3 to rotate through the guide rod 306, which plays a role in limiting the cam 3, and prevents the cam 3 from rotating under the drive of the crescent ring 501, resulting in changes in the spacing between the air nozzles 209 in the patch component 2, causing the final position of the patch to deviate. The support plate 104 supports the cam 3, and the cam 3 does not contact the drive shaft 402. The drive shaft 402 cannot directly drive the cam 3 to rotate. The two T-shaped grooves 101 can support the patch component 2 while allowing the patch component 2 to slide along the T-shaped grooves 101.

[0049] In this embodiment, Figure 3 and Figure 7As shown, the patch assembly 2 includes a slider 1 201 and a slider 202 which are respectively slidably connected inside two groups of T-shaped slide grooves 101, the slider 1 201 is fixedly connected to the top of the tilting rod 203, the tilting rod 203 runs through the middle of the arc plate 204, the bottom of the arc plate 204 is connected to the middle of the top surface of the linear slide 205, the linear slide 205 is fixedly connected to the cylinder 206 through the bottom moving seat, the output end of the cylinder 206 is fixedly connected to the circular plate 207, the circular plate The bottom surface of 207 is fixedly connected with a vacuum pump 208, and the bottom surface of the vacuum pump 208 is connected with an air nozzle 209. One end of the linear slide 205 is connected to the slider 202, and the bottom end of the tilting rod 203 is slidably connected to the inside of the spiral groove 302; the external dimension structure of the tilting rod 203 is consistent with the internal dimension structure of the spiral groove 302. Before the patch starts, the circuit board is placed on the placement table 102, and then the cam 3 rotates under the drive of the driving component 4 to move the patch component 2 The spacing between the tilting rods 203 in the circuit board is adjusted to reach the required spacing, and the movement in the front and rear directions is achieved by the linear slide 205. The linear slide 205 can drive the air nozzle 209 to move, and the extension or shortening of the cylinder 206 can drive the air nozzle 209 to rise and fall, and the vacuum pump 208 can make the air nozzle 209 suck up the patch. In the process of the air nozzle 209 moving down to place the patch on the top surface of the circuit board, the extension of the cylinder 206 will drive the clamping assembly 6 to run synchronously through the circular plate 207. When the patch has not yet contacted the circuit board, the clamping jaw 6011 is inflated to clamp and fix the circuit board to prevent the circuit board from sticking and deflecting during the patch process. After the patch is completed, as the cylinder 206 shortens, the clamping of the circuit board is automatically released. The reset spring 608 can prevent the clamping jaw 6011 from being damaged by excessive inflation. When the clamping jaw 6011 is over-inflated, the piston plate 609 will squeeze the reset spring 608 upward to prevent the clamping jaw 6011 from being damaged by excessive expansion.

[0050] The use method and advantages of the present invention: When the circuit board patch device is used, the working process is as follows:

[0051] First, place the circuit board on the placement table 102. In the right-side viewing angle, all the rotation directions that appear below are based on the right-side viewing angle. The motor 401 drives the drive shaft 402 to rotate clockwise, and the transmission shaft 403 in the middle section of the drive shaft 402 drives the ratchet wheel 2 407 to rotate synchronously. At this time, the ratchet wheel 2 407 is engaged with the pawl 705 in the positive group engaging component 7, and the pawl 705 is connected to the inner wall of the circular mounting groove 303 inside the cam 3 through the rotating shaft 706. Therefore, as the ratchet wheel 2 407 drives the cam 3 to rotate clockwise about its own axis, the cam 3 at this time drives the air nozzle 209 in the patch component 2 to adjust the spacing through the spiral groove 302 on the outer surface, thereby improving the flexibility of the patch device, thereby meeting the requirements of patches with different spacings. The patch device can also improve the patch efficiency by arranging multiple groups of air nozzles 209 to perform patch simultaneously. In the process of adjusting the spacing of the air nozzles 209, the cam 3 uses the guide rod 306 at the end to drive the crescent ring 501 to rotate synchronously, so that the crescent ring 501 and the threaded rod 4012 are relatively still, preventing the crescent ring 501 from driving the clamping assembly 6 to move along the axis direction of the threaded rod 4012. After the spacing is adjusted, the motor 401 drives the drive shaft 402 to rotate counterclockwise. At this time, the ratchet wheel 407 is not engaged with the pawl 705, and the ratchet wheel 407 cannot drive the cam 3 to rotate. In addition, the cam 3 is rubbed by the friction pair plate. The friction force between the friction pair plate and the cam 3 is greater than the torque required for the threaded rod 4012 to drive the crescent ring 501. The toothed ring 501 cannot rotate, but is driven by the threaded rod 4012 to approach the cam 3. The movement of the crescent ring 501 will drive the clamping assembly 6 below to move synchronously until the clamping claw 6011 in the clamping assembly 6 fits the edge of the circuit board on the placement table 102. The welding rod 503 and the extrusion block 504 also move synchronously toward the middle of the cam 3 along with the crescent ring 501. During this process, the extrusion block 504 gradually disengages from the contact block 702 in the positive group engaging assembly 7. Under the action of the arc spring 308, the rotating ring 701 rotates clockwise. The rotating ring 701 pulls the ratchet 705 through the connecting rope 704 to rotate clockwise around the rotating shaft 706, so that the ratchet 705 in the positive group engaging assembly 7 shrinks toward the outer ring of the rotating ring 701. When the clamping claw After 6011 is fitted with the edge of the circuit board, the patch is started. The cylinder 206 is extended to move the circular plate 207, the vacuum pump 208 and the air nozzle 209 downward. The patch is adsorbed on the bottom of the air nozzle 209. At the same time, when the circular plate 207 moves downward, the multi-stage telescopic rod 606, the piston rod 605, the lifting plate 607 and the return spring 608 drive the piston plate 609 to move downward, and the air in the sealing box 603 is squeezed into the clamping claw 6011, so that the clamping claw 6011 expands to clamp and fix the circuit board. Then the air nozzle 209 places the patch on the circuit board. During the patch process, the clamping component 6 is driven to fix the circuit board to prevent the circuit board from shifting and causing the deviation of the patch position. The flexible clamping claw 6011 can reduce the probability of damaging the circuit board. After the patch is completed,The cylinder 206 moves upward, and the air in the clamping jaws 6011 is pumped into the sealing box 603 again, automatically loosening the fixation of the circuit board, and then the circuit board with the patch is removed, and then the motor 401 drives the driving shaft 402 to continue to rotate counterclockwise until the ratchet 1 405 enters the reverse assembly 7 under the push of the crescent ring 501, and the ratchet 1 405 contacts the solid plate in the middle of the inner side of the cam 3. At this time, the crescent ring 501 will continue to approach the cam 3 for a distance under the drive of the threaded rod 4012. In this process, the ratchet 1 405 is connected to the cam 3 through the double connecting rod 406 and the ratchet 2 407. The spring telescopic rod 408 is compressed, and the crescent ring 501 drives the extrusion block 504 to gradually contact the contact block 702 in the anti-assembly clamping component 7 through the welding rod 503, and squeezes the contact block 702. The contact block 702 compresses the arc spring 308 to make the rotating ring 701 in the anti-assembly clamping component 7 rotate clockwise, and then the connecting rope 704 is loosened. Under the action of the torsion spring 707 and the rotating shaft 706, the ratchet pawl 705 in the anti-assembly clamping component 7 will be expanded to the middle of the rotating ring 701 and meshed with the ratchet wheel 1 405, because the ratchet wheel 1 405 is driven by the driving shaft 402 to rotate counterclockwise. The cam 3 is still, and the clockwise rotation of the threaded rod 4012 will drive the crescent ring 501 to move away from the cam 3 again, until the crescent ring 501 drives the ratchet wheel 2 407 to re-enter the positive assembly engaging component 7, and the crescent ring 501 will also drive the squeeze wheel 407 to move away from the cam 3. The pressing block 504 re-compresses the contact block 702 in the positive group clamping assembly 7 to expand the pawl 705 and mesh with the second ratchet 407. In addition, the crescent ring 501 will also drive the clamping assembly 6 to reset. Note that the clamping assembly 6 is slidably connected to the crescent ring 501 through the arc-shaped slider 601. When the crescent ring 501 rotates, it will not drive the clamping assembly 6 to rotate. When the crescent ring 501 moves linearly along the driving shaft 402, it can drive the clamping assembly 6 to move synchronously. The limit bar 604 in the clamping assembly 6 is located between the inner bottom surface of the housing 1 and the limit rod 103 to limit the clamping assembly 6.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A circuit board patch device, comprising a housing (1), characterized in that: A patch assembly (2) is slidably connected to the top of the inner side of the housing (1), and the patch assembly (2) is movably connected to the outer surface of the cam (3). A driving assembly (4) is provided in the middle of the housing (1), and the driving assembly (4) runs through the middle of the sliding assembly (5). A clamping assembly (6) is movably connected to the bottom of the sliding assembly (5), and a locking assembly (7) is provided inside the cam (3); The driving assembly (4) comprises a motor (401) fixedly connected to one side of the housing (1); the output end of the motor (401) passes through the side wall of the housing (1) and is connected to a driving shaft (402); the driving shaft (402) comprises a threaded rod (4012) and a transmission shaft (403); a limiting groove (404) is provided on the outer surface of the transmission shaft (403); the transmission shaft (403) is slidably connected to a ratchet wheel 1 (405) and a ratchet wheel 2 (407) through the limiting groove (404); the ratchet wheel 1 (4012) is connected to the driving shaft (402) and the driving shaft (40 ... 5) and the second ratchet wheel (407) are connected via a double connecting rod (406); a spring telescopic rod (408) is fixedly connected to the side of the second ratchet wheel (407) away from the first ratchet wheel (405); an end of the spring telescopic rod (408) away from the second ratchet wheel (407) is fixedly connected to a mounting ring (409); one side of the mounting ring (409) is fixedly connected to two horizontal connecting rods (4010); a rotating seat (4011) is fixedly connected between the ends of the two horizontal connecting rods (4010) away from the mounting ring (409); The engaging assembly (7) comprises a rotating ring (701) rotatably connected to the inside of the cam (3); a contact block (702) is welded to the outer ring of the rotating ring (701); rotating grooves (703) are provided on both sides of the rotating ring (701); a connecting rope (704) is fixedly connected to the inner ring of the rotating ring (701); one end of the connecting rope (704) is connected to one side of a pawl (705); two rotating shafts (706) are fixedly connected to both sides of the pawl (705); and torsion springs (707) are provided on the outer sides of the two rotating shafts (706).

2. A circuit board mounting device according to claim 1, characterized in that: The sliding assembly (5) comprises a crescent ring (501) threadedly connected to the middle part of the threaded rod (4012); an arc-shaped sliding groove (502) is provided in the middle part of the outer ring of the crescent ring (501); a welding rod (503) is fixedly connected to the side of the crescent ring (501) close to the cam (3); and an extrusion block (504) is fixedly connected to the end of the welding rod (503) away from the crescent ring (501).

3. A circuit board mounting device according to claim 2, characterized in that: Both ends of the extrusion block (504) have one side with an inclined surface structure, and the two inclined surfaces are symmetrical about the center of the extrusion block (504). The extrusion block (504) is slidably arranged inside the through groove (304).

4. A circuit board mounting device according to claim 1, characterized in that: The outer surface of the cam (3) is respectively provided with a connecting groove (301) and a spiral groove (302); the inner side of the cam (3) is respectively provided with a circular mounting groove (303) and a through groove (304); both walls of the circular mounting groove (303) are integrally formed with a limiting ring (305); both ends of the cam (3) are fixedly connected with a guide rod (306); a fixing block (307) is welded to the inner wall of the outer ring of the circular mounting groove (303); and one side of the fixing block (307) is fixedly connected with an arc spring (308).

5. A circuit board mounting device according to claim 4, characterized in that: The connecting groove (301) is located in the middle of the outer surface of the cam (3), and the spiral grooves (302) are distributed on both sides of the connecting groove (301). The pitches of the spiral grooves (302) are different. The closer the spiral groove (302) is to the connecting groove (301), the smaller the pitch. The spiral groove (302) is three-fifths of a circle.

6. A circuit board mounting device according to claim 1, characterized in that: The drive shaft (402) passes through the middle of the cam (3), and the area where the drive shaft (402) is located inside the cam (3) is a transmission shaft (403). Both ends of the transmission shaft (403) are respectively connected to a section of threaded rod (4012), and the thread directions of the two threaded rods (4012) are opposite.

7. A circuit board mounting device according to claim 1, characterized in that: A through hole is provided in the middle of the rotating seat (4011), and the diameter of the through hole is larger than the diameter of the threaded rod (4012). The rotating seat (4011) and the crescent ring (501) are rotatably connected.

8. A circuit board mounting device according to claim 1, characterized in that: The clamping assembly (6) comprises an arc-shaped slider (601) slidably connected inside the arc-shaped slide groove (502); the arc-shaped slider (601) is fixedly connected to the top of the vertical column (602); the bottom end of the vertical column (602) is fixedly connected to a sealing box (603); both sides of the bottom surface of the sealing box (603) are fixedly connected to limit strips (604); the top surface of the sealing box (603) is penetrated by a piston rod (605); one side of the top end of the piston rod (605) is fixedly connected to a multi-stage telescopic rod (606); the piston rod The bottom end of (605) is fixedly connected to a lifting plate (607), the middle part of the bottom surface of the lifting plate (607) is fixedly connected to a return spring (608), the bottom end of the return spring (608) is fixedly connected to a piston plate (609), the bottom of one side of the sealing box (603) is connected to a fixed pipe (6010), the end of the fixed pipe (6010) away from the sealing box (603) is connected to a clamp (6011), and a plurality of pleated grooves (6012) are provided on the side of the clamp (6011) close to the fixed pipe (6010).

9. A circuit board mounting device according to claim 1, characterized in that: The inner top surface and rear wall of the shell (1) are both provided with T-shaped sliding grooves (101); the inner bottom of the shell (1) is fixedly connected to a placing platform (102); the two sides of the placing platform (102) are fixedly connected to the inner walls of the shell (1) on both sides with limiting rods (103); the middle part of the inner rear wall of the shell (1) is fixedly connected to a supporting plate (104); the outer side of the supporting plate (104) is an annular structure, and the annular part of the supporting plate (104) is embedded in the connecting groove (301) in the middle part of the cam (3) and is rotatably connected to the cam (3).

10. A circuit board mounting device according to claim 9, characterized in that: The patch assembly (2) comprises a slider 1 (201) and a slider 2 (202) which are respectively slidably connected inside two groups of T-shaped slide grooves (101); the slider 1 (201) is fixedly connected to the top end of a tilting rod (203); the tilting rod (203) passes through the middle of an arc plate (204); the bottom of the arc plate (204) is connected to the middle of the top surface of a linear slide (205); the linear slide (205) is fixedly connected to a cylinder (206) via a bottom movable seat; the output end of the cylinder (206) is fixedly connected to a circular plate (207); the bottom surface of the circular plate (207) is fixedly connected to a vacuum pump (208); the bottom surface of the vacuum pump (208) is connected to an air nozzle (209); one end of the linear slide (205) is connected to the slider 2 (202); the bottom end of the tilting rod (203) is slidably connected to the inside of the spiral groove (302).

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