Laser cutting positioning tool

Abstract

A laser cutting positioning tool belongs to the technical field of laser beam processing circuit boards. It includes a connecting mechanism and a supporting part installed on a table top. A pair of positioning mechanisms are symmetrically provided on the supporting part. The connecting mechanism is used to support, connect and fix the main components on the supporting part. The supporting part plays a supporting role on the circuit board when the circuit board is cut, and the positioning mechanism can also stably and reliably position and clamp the circuit board. During the cutting process, the carbon powder generated by the cutting can be sucked, thereby improving the cutting effect of the circuit board. Secondly, the components in the supporting part used to support the circuit board can be replaced according to the cutting size of the circuit board, and the setting of the connecting mechanism facilitates this replacement operation.

Description

Technical Field

[0001] The invention relates to the technical field of processing circuit boards by laser beams, and in particular to a laser cutting positioning tool. Background Art

[0002] In the processing of printed circuit boards, the printed circuit boards need to be processed into the shape required by the customer. There are two methods for shape processing, one is the mechanical gong plate method, and the other is laser cutting. Among them, laser cutting has higher efficiency and better shape accuracy than the mechanical gong plate method. The principle of laser cutting is to use a focused high-power density laser beam to irradiate the workpiece, so that the irradiated material quickly melts, vaporizes, ablates or reaches the ignition point, and at the same time, the molten material is blown away by a high-speed airflow coaxial with the beam, thereby achieving cutting. When the laser cutting method is applied to the processing of printed circuit boards, since the substrate of the printed circuit board is an organic material such as epoxy resin or other resin systems, a large amount of carbon powder will appear after laser cutting. As the cutting depth increases, the high-speed airflow of laser cutting cannot remove the carbon powder completely. These carbon powders will adhere to the edge of the printed circuit board, making the edge of the board black. At the same time, in order to ensure cutting accuracy during cutting, the circuit board is often pasted on the table of the laser cutting machine by means of tape. Although this positioning method can ensure the close contact between the circuit board and the table during cutting and prevent the circuit board from moving, the positioning operation is relatively cumbersome. At the same time, pasting is a flexible positioning, so the circuit board is prone to micro-movement during the cutting process, which in turn has an adverse effect on the cutting accuracy. Summary of the invention

[0003] The present invention provides a laser cutting positioning tool to solve the above-mentioned deficiencies of the prior art, solve the problem that the board edge of the circuit board turns black due to a large amount of residual carbon powder, and improve the reliability of positioning the circuit board during laser cutting.

[0004] In order to achieve the purpose of the present invention, the following technologies are proposed:

[0005] A laser cutting positioning tool comprises a connecting mechanism and a supporting part installed on a table top, a pair of positioning mechanisms are symmetrically arranged on the supporting part, the connecting mechanism is used for supporting, connecting and fixing the main components on the supporting part, the supporting part plays a supporting role for the circuit board when the circuit board is cut, and the circuit board can also be stably and reliably positioned and clamped through the positioning mechanism, and the carbon powder generated by the cutting can be sucked during the cutting process, thereby improving the cutting effect of the circuit board, and secondly, the components in the supporting part used to support the circuit board can be replaced according to the cutting size of the circuit board, and the setting of the connecting mechanism facilitates such replacement operation.

[0006] The connection mechanism includes a mounting frame installed on the table, a frame plate is installed on the upper end of the mounting frame, and at least four pillars are installed on the frame plate. The support part includes a plurality of mounting legs installed on the table, a suction disc is installed on the upper end of the mounting legs, a disc cover is provided at the lower end of the suction disc, a connecting pipe head is provided on the disc cover, and the connecting pipe head is connected to a suction pump through a connecting hose, a plurality of hoses are connected to the suction disc, a connecting head is provided at the upper end of the hose, and a pad is provided at the upper end of the pillar, and the pad is generally made of an aluminum alloy plate with good thermal conductivity. The pad has a rectangular structure, with multiple grooves crisscrossed on it, and connecting holes are opened at the intersections of the grooves. The number of connectors is consistent with that of the connecting holes, and the connectors are connected to the connecting holes through threads. The grooves on the pad can be matched according to the cutting size of the circuit board. When cutting, the laser beam emitted by the laser cutting head moves along the length of the grooves, and completes the cutting operation of the circuit board during the movement. The carbon powder generated by the laser beam irradiation during the cutting process will be sucked into the suction plate through the connecting holes and the hose by the suction pump, thereby avoiding the problem of blackening of the board edge.

[0007] Furthermore, a window is provided on one side of the suction disc, a filter screen is inserted inside the suction disc, an end plug is provided on the outer end of the filter screen, and the end plug is embedded in the window. The filter screen can prevent carbon powder from entering the suction pump under the suction of the suction pump, thereby reducing the cleaning frequency of the suction pump and also reducing the frequency of failure of the suction pump. Secondly, it is also convenient for collecting and storing carbon powder and for cleaning. The width of the above-mentioned window is greater than the thickness of the filter screen, which is convenient for removing carbon powder. The end plug has a sealing effect on the window to ensure greater suction during the suction process.

[0008] Furthermore, a limiting convex edge is provided at the inner lower end of the suction disc, and a plurality of inverted V plates are provided on opposite sides of the limiting convex edge, and an upper clamping plate is provided above the limiting convex edge. The filter screen plate is located on the upper side of the limiting convex edge, and the upper clamping plate is located on the upper side of the filter screen plate to limit the filter screen plate, and the inverted V plate is used to support the filter screen plate to prevent the filter screen plate made of flexible material from deforming during the suction process. In addition to supporting the filter screen plate, the limiting convex edge can also seal the gap between the filter screen plate and the inner wall of the suction disc, thereby preventing carbon powder from entering the lower part of the suction disc. The upper clamping plate limits the upper side of the filter screen plate, so that the filter screen plate fits on the upper wall of the limiting convex edge, thereby further improving the filtering effect of the sucked air.

[0009] Furthermore, the outer end of the window is a conical structure, and the opening size of the outer end of the window is larger than the opening size of its inner end, the outer edge of the end plugging plate is a conical structure, and the size of the inner end of the outer edge of the end plugging plate is smaller than the size of its outer end. Through the design of two matching conical structures, the sealing effect can be significantly improved.

[0010] Furthermore, the inner wall of the end plugging plate is provided with a card strip, the upper end of the card strip is formed with a V-groove, a sealing strip is embedded in the V-groove, a movable plate is provided at the upper end of the sealing strip, a pair of limiting vertical holes are provided on the movable plate, a limiting pin is inserted in the limiting vertical hole, the limiting pin is arranged on one side of the suction disc, a transverse hole is provided on the movable plate, a push rod is inserted in the transverse hole, a rotating plate is provided at the inner end of the push rod, a rotating shaft is provided at the upper end of the rotating plate, the rotating shaft is rotatably arranged on one side of the suction disc, a rotating cap is provided at the outer end of the rotating shaft, through the provided rotating plate, when it rotates, the push rod at its lower end will act on the transverse hole, so that the sealing strip made of rubber material is inserted in the V-groove, thereby improving the sealing effect of the entire suction disc. Of course, the filter screen plate can also be locked through this operation.

[0011] Furthermore, the connecting mechanism includes four vertical guide rails installed on the frame plate, the vertical guide rails are evenly distributed at the four corners of the frame plate, a sliding sleeve is slidably provided on the vertical guide rails, a movable arm is installed on the sliding sleeve, a pair of first connecting rods are hinged at the inner end of the movable arm, the other end of the first connecting rod is hinged to the second connecting rod, the lower end of the second connecting rod is hinged to a hinge seat, the hinge seat is installed on the frame plate, the upper end of the second connecting rod is hinged to a pressure plate, the inner end of the pressure plate is an arc structure, and a pair of third connecting rods are hinged at the outer end of the pressure plate, the other end of the third connecting rod is hinged to both sides of the movable arm, a lifting rod is installed on the lower wall of the movable arm, the lifting rod is penetrated through the frame plate, the lower end of the lifting rod can be connected to a vertically arranged hydraulic cylinder, and the lifting and lowering movement of the lifting rod is controlled by the hydraulic cylinder. Corner grooves are provided at the four corners of the pad, and the corner grooves are U-shaped. The inner end of the pressure plate is inserted into the corner grooves. When the pad is connected and positioned by the connection mechanism, the arc surface of the pressure plate acts on the arc surface of the angle grooves, thereby improving the accuracy of the pad positioning connection. The pressure plate is set far away from the pad under the action of the first connecting rod, the second connecting rod and the third connecting rod before the connection and positioning, so as to facilitate the placement operation of the pad. When connected and positioned, it can not only exert a downward force on the pad, but also have an inward thrust, thereby improving the accuracy of the pad positioning.

[0012] Furthermore, the inner side end of the pressure plate is connected to an adjusting screw by a thread, the lower end of the adjusting screw is rotatably provided with a pressure plate, the upper side of the angle groove is provided with a notch, the adjusting screw is inserted into the notch, and the upper end of the adjusting screw is provided with a hexagonal slot. By setting the adjusting screw, the pressure plate can be pressed against the lower wall of the angle groove, so that the lower wall of the pad is pressed against the lower wall of the pillar, and the upper wall of the angle groove also acts on the upper wall of the pressure plate, and in this way, the horizontality of the pad can be adjusted to further ensure the cutting accuracy.

[0013] Furthermore, a thread is provided on the outer circumference of the lifting rod, the lifting rod is connected with an internal threaded sleeve, the internal threaded sleeve is rotatably arranged on the frame plate, a gear is provided at the lower end of the internal threaded sleeve, the gear is meshed with a rack, a concave piece is installed on the other side of the rack, at least one guide rod is provided on the concave piece, a T-shaped plate is slidably provided on the guide rod, a slide rail is slidably provided on the upper end of the T-shaped plate, the slide rail is installed on the frame plate, a spring is provided on the outer end sleeve of the guide rod, the inner end of the spring acts on the T-shaped plate, an inclined groove is provided at one end of the concave piece, and the outer end of the inclined groove is inclined inwardly to extend The inner end of the inclined groove is provided with an end groove, the length direction of the end groove is parallel to the length direction of the concave part, a movable pressure rod is movably provided in the inclined groove and the end groove, an inner extension arm is provided at the lower end of the movable pressure rod, a sliding sleeve is installed at the outer end of the inner extension arm, a sliding rail is provided on the sliding sleeve, the sliding rail is installed on the frame plate, the length direction of the sliding rail is parallel to the length direction of the sliding rail, a two-way cylinder is provided between the inner ends of the sliding sleeves on the same side, the two-way cylinder is installed on the lower side of the frame plate, and the selected two-way cylinder can be replaced by other mechanisms with telescopic ends. When the lifting rod is lifted, the sliding sleeve is pulled by the bidirectional cylinder to move. During the movement, the movable pressure rod will first move in the inclined groove, so that the concave part and the rack on it are close to the gear. When the movable pressure rod moves out of the inclined groove, the gear and the rack will mesh with each other. Then, when the rack moves, it will drive the gear to rotate, and with the rotation of the gear, it will drive the internal thread sleeve to rotate, and through the rotation of the internal thread sleeve, it will drive the lifting rod to move upward, and finally achieve the purpose of fixing and accurately positioning the pad through the pressure plate. When the sliding sleeve is driven by the bidirectional cylinder to restore the movement, it will move the movable pressure rod from the end groove to the inclined groove, and at this time, the concave part will move outward under the action of the spring and the movable pressure rod, and the rack and the gear will be disconnected. Until the rack moves to the initial position, continuing the above operation can make the lifting rod drive the movable arm to move up a certain distance, and finally complete the positioning operation of the pad. The use of this driving method can not only reduce the number of cylinders / hydraulic cylinders used, thereby reducing the failure rate, but also ensure the synchronization when the pad is positioned and fixed, and can also ensure the horizontality of the pad to a certain extent.

[0014] Furthermore, it can be known from the above description that when the movable pressure rod moves in the inclined groove, the concave member can move in two directions, but the movement of the concave member along its length direction may cause adverse effects on the meshing of the rack and the gear. In order to avoid such adverse effects, a plurality of lower extension rods are installed on the frame plate, and a paddle is rotatably provided at the lower end of the lower extension rod, and a torsion spring is sleeved at the lower end of the lower extension rod, and the lower end of the torsion spring is fixed to the lower extension rod, and the upper end of the torsion spring is fixed to the paddle, and a stop pin is provided on one side of the paddle. The stop pin is arranged on the frame plate, and the stop pin acts on the back side of the paddle to limit the rotation of the paddle. When the rack and the gear are meshed, the stop pin acts on the paddle, and then the paddle acts on the end of the concave part, so that the concave part will not move along its length direction under the drive of the two-way cylinder, but under the action of the movable pressure rod, the concave part first approaches the gear along the width direction, and when the gear and the rack are meshed, the paddle will lose the limit on the end of the concave part, and in the subsequent movement, it will drive the gear to rotate through the movement of the rack. If the concave part moves outward, that is, when it performs a recovery movement, the outer end of the concave part will act on the paddle to rotate the paddle. At this time, since the paddle is rotating away from the stop pin, the paddle can rotate under the action of external force until the concave part passes the paddle, and it will return to its initial position under the action of the torsion spring.

[0015] Furthermore, the positioning mechanism includes a side plate installed between each pair of pillars, a pair of waist-shaped holes are opened on the side plate, the waist-shaped holes are vertically arranged, a capped guide rod is movably arranged in the waist-shaped hole, a movable outer plate is installed on the outer end of the capped guide rod, a pair of guide transverse holes are opened at both ends of the movable outer plate, a movable through rod is passed through the guide transverse holes, a limited outer plate is installed on the outer end of the movable through rod, the limited outer plate is located on the outer side of the movable outer plate, a movable inner plate is installed on the inner end of the movable through rod, a flat plate is provided on the inner side of the movable inner plate, an inclined hole is opened on the flat plate, the inner end of the inclined hole extends obliquely outward, an end clamping plate is provided on the inner end of the flat plate, an end clamping groove is opened on the lower wall of the end clamping plate, a rotating cylinder is installed on the inner side of the side plate, and the rotating cylinder A top pressure wheel is eccentrically provided on the rotating shaft, a rectangular hole is provided on the movable outer plate, the top pressure wheel is located in the rectangular hole, a pull-out plate is passed through the upper end of the movable outer plate, a side clamping plate is installed on the inner end of the pull-out plate, a side clamping groove is provided on the lower wall of the side clamping plate, a pair of limiting screws are provided at the outer end of the pull-out plate, a vertical plate is sleeved on the limiting screws, a waist-shaped vertical hole is provided on the vertical plate, the limiting screw is passed through the waist-shaped vertical hole, a pull-out rod is provided at the lower end of the vertical plate, an inner top horizontal plate is installed on the inner end of the pull-out rod, a positioning cylinder is installed on the inner side of the side plate, the movable end of the positioning cylinder is arranged on the inner top horizontal plate, a transverse arm is installed on the inner end of the pull-out plate, end clamping push rods are rotatably provided at both ends of the transverse arm, and the lower end of the end clamping push rod is passed through the inclined hole. When the positioning cylinder drives the pull-out plate to move inward, the vertical surface of the side clamping groove can act on both sides of the circuit board, and when the pull-out plate moves, the vertical surface of the end clamping groove will act on the end of the circuit board, and the positioning cylinder can realize the precise positioning operation around the circuit board. When the top pressure wheel rotates, its outer periphery acts on the lower wall of the rectangular hole, which will cause the side clamping plate and the end clamping plate to move downward, so that the horizontal surface of the side clamping groove and the horizontal surface of the end clamping groove act on the upper wall of the circuit board, thereby achieving the purpose of positioning the circuit board, and when the clamping is cancelled, the outer periphery of the top pressure wheel will act on the upper wall of the rectangular hole, so as to facilitate the cancellation of the clamping and positioning of the circuit board.

[0016] The advantages of the above technical solution are:

[0017] When the present invention cuts the circuit board by laser beam, the circuit board can be accurately, stably and reliably clamped and positioned to ensure the accuracy of laser cutting. At the same time, during the cutting process, the generated carbon powder can be cleaned to avoid the problem of blackening of the cut edge of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Figure 1 A three-dimensional structural diagram of a laser cutting positioning tool is shown.

[0020] Figure 2 A first perspective stereoscopic structural diagram of the connecting mechanism is shown.

[0021] Figure 3 A second perspective stereoscopic structural diagram of the connecting mechanism is shown.

[0022] Figure 4 A three-dimensional structural diagram of a positioning component used for connecting a pad in a connecting mechanism is shown.

[0023] Figure 5 A three-dimensional structural diagram of a component in a connecting mechanism used to drive a pressing plate to connect and position a pad is shown.

[0024] Figure 6 A three-dimensional structural diagram of the support portion is shown.

[0025] Figure 7 A three-dimensional structural diagram of the pad is shown.

[0026] Figure 8 A three-dimensional structural diagram of a suction cup is shown.

[0027] Fig. 9 A three-dimensional structural diagram of the filter screen plate is shown.

[0028] Fig.10 A diagram showing the positional relationship between the positioning mechanism and the pad is shown.

[0029] Fig.11 A three-dimensional structural diagram of the positioning mechanism is shown.

[0030] Description of reference numerals:

[0031] Table 1, connecting mechanism 2, supporting part 3, positioning mechanism 4, circuit board 5, mounting frame 200, frame plate 201, vertical guide rail 202, sliding sleeve 203, movable arm 204, hinge seat 205, second connecting rod 206, pressing plate 207, adjusting screw rod 208, pressing plate 209, first connecting rod 210, third connecting rod 211, lifting rod 212, internal threaded thread sleeve 213, gear 214, rack 215, concave member 216, guide rod 2 17, spring 218, T-shaped plate 219, slide rail 220, inclined groove 221, end groove 222, sliding rail 223, sliding sleeve 224, inner extension arm 225, movable pressure rod 226, lower extension rod 227, paddle 228, torsion spring 229, stop pin 230, support 231, two-way cylinder 232, mounting leg 300, suction plate 301, plate cover 302, hose 303, pad 304, sink 305, connecting hole 306, angle groove 307, notch 308, limiting convex edge 310, upper clamping plate 311, inverted V plate 312, window 313, filter screen plate 314, end blocking plate 315, clamping strip 316, movable plate 317, limiting vertical hole 318, limiting pin 319, rotating shaft 320, rotating cap 321, rotating plate 322, transverse hole 323, side plate 400, waist-shaped hole 401, capped guide rod 402, movable outer plate 403, guide transverse hole 404, rectangular hole 4 05, rotating cylinder 406, pressing wheel 407, positioning cylinder 408, inner top horizontal plate 409, pulling rod 410, vertical plate 411, waist-shaped vertical hole 412, limiting screw 413, pulling plate 414, side clamping plate 415, side clamping groove 416, horizontal arm 417, end clamping push rod 418, moving inner plate 419, moving through rod 420, limiting outer plate 421, flat plate 422, inclined hole 423, end clamping plate 424, end clamping groove 425. DETAILED DESCRIPTION

[0032] like Figure 1 As shown, a laser cutting positioning tool includes a table 1 arranged on a laser cutting machine, a connecting mechanism 2 and a supporting portion 3 are provided on the table 1, a pair of positioning mechanisms 4 are symmetrically provided on the supporting portion 3, and the positioning mechanisms 4 act on the four side walls of a circuit board 5 to position the circuit board 5.

[0033] like Figures 2 to 5 As shown, the connection mechanism 2 includes a mounting frame 200 mounted on the table 1 , a frame plate 201 is mounted on the upper end of the mounting frame 200 , and at least four pillars 231 are mounted on the frame plate 201 .

[0034] like Figure 4As shown, the connecting mechanism 2 also includes four vertical guide rails 202 installed on the frame plate 201, and the vertical guide rails 202 are evenly distributed at the four corners of the frame plate 201. A sliding sleeve 203 is slidably provided on the vertical guide rail 202, and a movable arm 204 is installed on the sliding sleeve 203. The inner side end of the movable arm 204 is hinged with a pair of first connecting rods 210, and the other end of the first connecting rod 210 is hinged with a second connecting rod 206. The lower end of the second connecting rod 206 is hinged with a hinge seat 205, and the hinge seat 205 is installed on the frame plate 201. The upper end of the second connecting rod 206 is hinged with a pressing plate 207, the inner end of the pressing plate 207 is an arc-shaped structure, and the outer end of the pressing plate 207 is hinged with a pair of third connecting rods 211, and the other end of the third connecting rod 211 is hinged on both sides of the movable arm 204. A lifting rod 212 is installed on the lower wall of the movable arm 204, and the lifting rod 212 is penetrated on the frame plate 201. The lifting rod 212 can be connected to a vertically arranged linear mechanism such as a vertically arranged hydraulic cylinder to drive the lifting rod 212 to move up and down. Figure 5 As shown, another embodiment is provided, such as setting a thread on the outer periphery of the lifting rod 212, the lifting rod 212 is connected with an internal threaded thread sleeve 213, the internal threaded thread sleeve 213 is rotatably arranged on the frame plate 201, the lower end of the internal threaded thread sleeve 213 is provided with a gear 214, the gear 214 is meshed with a rack 215, the other side of the rack 215 is installed with a concave member 216, the concave member 216 is provided with at least one guide rod 217, the guide rod 217 is slidably provided with a T-shaped plate 219, the upper end of the T-shaped plate 219 is slidably provided with a slide rail 220, the slide rail 220 is installed on the frame plate 201, the outer end sleeve of the guide rod 217 is provided with a spring 218, the inner end of the spring 218 acts on the T-shaped plate 219, and the concave member 216 is provided with a spring 218. An inclined groove 221 is provided at one end, and the outer end of the inclined groove 221 extends inwardly at an angle, and an end groove 222 is provided at the inner end of the inclined groove 221. The length direction of the end groove 222 is parallel to the length direction of the concave part 216. A movable pressure rod 226 is movably provided in the inclined groove 221 and the end groove 222. An inner extension arm 225 is provided at the lower end of the movable pressure rod 226. A sliding sleeve 224 is installed at the outer end of the inner extension arm 225. A sliding rail 223 is provided on the sliding sleeve 224. The sliding rail 223 is installed on the frame plate 201. The length direction of the sliding rail 223 is parallel to the length direction of the sliding rail 220. A two-way cylinder 232 is provided between the inner ends of the sliding sleeves 224 on the same side, and the two-way cylinder 232 is installed on the lower side of the frame plate 201. In this solution, it is also necessary to install multiple lower extension rods 227 on the frame plate 201. The lower end of the lower extension rod 227 is rotatably provided with a paddle 228. The lower end of the lower extension rod 227 is sleeved with a torsion spring 229. The lower end of the torsion spring 229 is fixed to the lower extension rod 227, and the upper end of the torsion spring 229 is fixed to the paddle 228. A stop pin 230 is provided on one side of the paddle 228. The stop pin 230 is arranged on the frame plate 201, and the stop pin 230 acts on the back side of the paddle 228 to limit the rotation of the paddle 228.

[0035] like Figures 6 to 9 As shown, the support part 3 includes a plurality of mounting legs 300 mounted on the table 1, a suction plate 301 is mounted on the upper end of the mounting legs 300, a plate cover 302 is provided at the lower end of the suction plate 301, a connecting pipe head is provided on the plate cover 302, and the connecting pipe head is connected to a suction pump through a connecting hose, and a plurality of hoses 303 are connected to the suction plate 301, and a connector is provided at the upper end of the hose 303. Figure 3 , Figure 4 and Figure 7 As shown, a pad 304 is provided at the upper end of the pillar 231, and the pad 304 is in a rectangular structure. Angle grooves 307 are provided at the four corners of the pad 304, and the angle grooves 307 are in a U-shaped structure. The inner side end of the pressing plate 207 is inserted into the angle groove 307, and the inner side end of the pressing plate 207 is connected to the adjusting screw 208 through a thread. The lower end of the adjusting screw 208 is rotatably provided with a pressure plate 209, and a notch 308 is provided on the upper side of the angle groove 307, and the adjusting screw 208 is inserted into the notch 308. Figure 7 As shown, a plurality of grooves 305 are crisscrossed on the pad 304, the grooves 305 are U-shaped or V-shaped, and connecting holes 306 are opened at the intersections of the grooves 305. The number of connectors is the same as that of the connecting holes 306, and the connectors are connected to the connecting holes 306 by threads.

[0036] like Figure 8 and Fig. 9As shown, a window 313 is provided on one side of the suction disc 301, a filter screen plate 314 is inserted inside the suction disc 301, an end plugging plate 315 is provided at the outer end of the filter screen plate 314, and the end plugging plate 315 is embedded in the window 313. A limiting convex edge 310 is provided at the lower end of the suction disc 301, a plurality of inverted V-plates 312 are provided on opposite sides of the limiting convex edge 310, an upper clamping plate 311 is provided above the limiting convex edge 310, the filter screen plate 314 is located on the upper side of the limiting convex edge 310, and the upper clamping plate 311 is located on the upper side of the filter screen plate 314 to limit the filter screen plate 314, and the inverted V-plate 312 is used to support the filter screen plate 314. The outer end of the window 313 is in a conical structure, and the opening size of the outer end of the window 313 is larger than the opening size of the inner end. The outer edge of the end blocking plate 315 is in a conical structure, and the size of the inner end of the outer edge of the end blocking plate 315 is smaller than the size of the outer end. The inner wall of the end blocking plate 315 is provided with a clamping strip 316, and the upper end of the clamping strip 316 is opened to form a V-groove, and a sealing strip is embedded in the V-groove. A movable plate 317 is provided at the upper end of the sealing strip. The movable plate 317 is provided with a pair of limiting vertical holes 318, and limiting pins 319 are passed through the limiting vertical holes 318. The limiting pins 319 are arranged on one side of the suction disc 301. The movable plate 317 is provided with a transverse hole 323, and a push rod is passed through the transverse hole 323. A rotating plate 322 is provided at the inner end of the push rod, and a rotating shaft 320 is provided at the upper end of the rotating plate 322. The rotating shaft 320 is rotatably arranged on one side of the suction disc 301, and a rotating cap 321 is provided at the outer end of the rotating shaft 320.

[0037] like Fig.10 and Fig.11As shown, the positioning mechanism 4 includes a side plate 400 installed between each pair of pillars 231, the side plate 400 is located on both sides of the pad 304, a pair of waist-shaped holes 401 are opened on the side plate 400, the waist-shaped holes 401 are vertically arranged, a capped guide rod 402 is movably arranged in the waist-shaped hole 401, and a movable outer plate 403 is installed at the outer end of the capped guide rod 402, and a pair of guide transverse holes 404 are opened at both ends of the movable outer plate 403, and a movable through rod 420 is inserted into the guide transverse hole 404. The movable through rod 420 0 is installed with a limit outer plate 421, the limit outer plate 421 is located on the outer side of the movable outer plate 403, the inner end of the movable through rod 420 is installed with a movable inner plate 419, the inner side of the movable inner plate 419 is provided with a flat plate 422, an inclined hole 423 is opened on the flat plate 422, the inner side end of the inclined hole 423 extends outwardly, the inner side end of the flat plate 422 is provided with an end clamping plate 424, the lower wall of the end clamping plate 424 is provided with an end clamping groove 425, and the inner side of the side plate 400 is installed with a rotating cylinder 406, the rotating cylinder A top pressing wheel 407 is eccentrically arranged on the rotating shaft of the movable outer plate 406, a rectangular hole 405 is provided on the movable outer plate 403, and the top pressing wheel 407 is located in the rectangular hole 405. A pull-out plate 414 is penetrated at the upper end of the movable outer plate 403, and a side clamping plate 415 is installed at the inner side end of the pull-out plate 414. A side clamping groove 416 is provided on the lower wall of the side clamping plate 415. A pair of limiting screws 413 are provided at the outer end of the pull-out plate 414, and a vertical plate 411 is sleeved on the limiting screw 413. A waist-shaped vertical plate 411 is provided on the vertical plate Hole 412, a limiting screw 413 is passed through the waist-shaped vertical hole 412, a pull-out rod 410 is provided at the lower end of the vertical plate 411, an inner end of the pull-out rod 410 is installed with an inner top horizontal plate 409, a positioning cylinder 408 is installed on the inner side of the side plate 400, and the movable end of the positioning cylinder 408 is arranged on the inner top horizontal plate 409, a transverse arm 417 is installed at the inner end of the pull-out plate 414, and end clamp push rods 418 are rotatably provided at both ends of the transverse arm 417, and the lower end of the end clamp push rod 418 is passed through the inclined hole 423.

[0038] Generally speaking, in this embodiment, when performing laser cutting of the circuit board 5, the following steps are performed:

[0039] Step 1, processing the criss-crossing grooves 305, the connecting holes 306, the corner grooves 307 and the notches 308 on the pad 304 according to the cutting size of the circuit board 5.

[0040] Step 2: Place the pad 304 on the support 231 and connect the hose 303 to the pad 304 via a connector.

[0041] Step 3, synchronously start the bidirectional cylinder 232, so as to drive the sliding sleeve 224 to move inward along the sliding rail 223 through the bidirectional cylinder 232, and drive the movable pressure rod 226 to move during the movement, and at the same time, the paddle 228 acts on the inner side end of the concave part 216, and at this time, the stop pin 230 plays a role in limiting the rotation of the paddle 228. At this time, the movable pressure rod 226 will first move inward in the inclined groove 221, and during the movement, the rack 215 will only approach the gear 214 along its width direction, and finally make the rack 215 and the gear 214 mesh with each other, and when the two mesh, the paddle 228 will lose the limit on the concave part 216, and then the rack 215 will move inward under the drive of the bidirectional cylinder 232, and the gear 214 will also rotate under the movement of the rack 215, and when the gear 214 rotates, it will drive the internal threaded sleeve 213 to rotate , and the rotation of the internal threaded sleeve 213 will drive the lifting rod 212 to move upward, and the upward movement of the lifting rod 212 will drive the movable arm 204 to move upward along the vertical guide rail 202, and in the process of movement, the pressure plate 207 will move inward through the first connecting rod 210, the third connecting rod 211 and the second connecting rod 206, and the pressure plate 207 will be inserted into the angle groove 307, and as the movable arm 204 moves upward, the pressure plate 207 will act on the lower wall of the angle groove 307, thereby completing the positioning and fixing operation of the pad 304.

[0042] Step 4, adjust the levelness of the pad 304 by using a level ruler. During the adjustment, the adjusting screw 208 is rotated, and the pressure plate 209 acts on the lower wall of the angle groove 307 until the pad 304 reaches a predetermined level.

[0043] Step 5, place the circuit board 5 on the pad 304, and synchronously start the positioning cylinder 408, so that the positioning cylinder 408 drives the inner top horizontal plate 409 to move inward, and the inner top horizontal plate 409 pulls the pull-out rod 410 to move inward, and when the pull-out rod 410 moves inward, the pull-out plate 414 will move inward, and the inward movement of the pull-out plate 414 will limit the two sides of the circuit board through the vertical surface of the side clamp groove 416. At the same time, with the movement of the pull-out plate 414, the horizontal arm 417 and the end clamp push rod 418 will move, and when the end clamp push rod 418 moves, it will act on the inclined hole 423, so that the vertical surface of the end clamp groove 425 will limit the two ends of the circuit board. When performing the above operation, it is also necessary to drive the top pressure wheel 407 to rotate by rotating the cylinder 406, and make the outer periphery of the top pressure wheel 407 act on the lower wall of the rectangular hole 405, and finally clamp and position the circuit board 5 through the horizontal surface of the end clamp groove 425 and the horizontal surface of the side clamp groove 416. This clamping method can ensure that the circuit board 5 is tightly attached to the pad 304.

[0044] Step 6, cutting the circuit board 5. During the cutting process, the suction pump is started to allow the trough 305 to suck the carbon powder on the cut edge of the circuit board 5, so that the carbon powder enters the suction plate 301 through the hose 303 and is blocked by the filter plate 314 in the suction plate 301, until the cutting operation of the circuit board 5 is completed.

[0045] Step 7, when there is a large amount of carbon powder in the suction disc 301, the rotating plate 322 can be rotated by rotating the cap 321. The rotation of the rotating plate 322 will cause the push rod to act on the transverse hole 323, so that the sealing strip is moved out of the V-groove, and then the filter plate 314 is pulled out and cleaned. After cleaning, the filter plate 314 is inserted into the suction disc 301 again, and the carbon powder is sucked and cut.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A laser cutting positioning tool, characterized in that: It comprises a connecting mechanism (2) and a supporting portion (3) installed on a tabletop (1), wherein a pair of positioning mechanisms (4) are symmetrically provided on the supporting portion (3); The connection mechanism (2) comprises a mounting frame (200) mounted on the tabletop (1), a frame plate (201) being mounted on the upper end of the mounting frame (200), and at least four pillars (231) being mounted on the frame plate (201); The support portion (3) comprises a plurality of mounting legs (300) mounted on the tabletop (1), a suction disc (301) being mounted on the upper end of the mounting legs (300), a disc cover (302) being disposed at the lower end of the suction disc (301), a connecting pipe head being disposed on the disc cover (302), the connecting pipe head being connected to a suction pump via a connecting hose, a plurality of hoses (303) being connected to the suction disc (301), a connecting head being disposed at the upper end of the hose (303), a pad (304) being disposed at the upper end of the support column (231), the pad (304) being of a rectangular structure, a plurality of sink grooves (305) being disposed on the pad (304) in a crisscross pattern, and a connecting hole (306) being disposed at the intersection of the sink grooves (305), the number of the connecting heads being the same as the number of the connecting holes (306), and the connecting heads being connected to the connecting holes (306) via threads; The positioning mechanism (4) acts on four side walls of the circuit board (5) to position the circuit board (5); The connecting mechanism (2) comprises four vertical guide rails (202) mounted on the frame plate (201), the vertical guide rails (202) being evenly distributed at the four corners of the frame plate (201), a sliding sleeve (203) being slidably provided on the vertical guide rails (202), a movable arm (204) being mounted on the sliding sleeve (203), a pair of first connecting rods (210) being hingedly connected to the inner ends of the movable arms (204), a second connecting rod (206) being hingedly connected to the other ends of the first connecting rods (210), and a lower end of the second connecting rod (206) being hingedly connected to the A hinge seat (205), the hinge seat (205) is installed on the frame plate (201), the upper end of the second connecting rod (206) is hinged with a pressing plate (207), the inner end of the pressing plate (207) is an arc-shaped structure, the outer end of the pressing plate (207) is hinged with a pair of third connecting rods (211), the other end of the third connecting rod (211) is hinged on both sides of the movable arm (204), and a lifting rod (212) is installed on the lower wall of the movable arm (204), and the lifting rod (212) is penetrated on the frame plate (201); Corner grooves (307) are provided at four corners of the pad (304), the corner grooves (307) are U-shaped, and the inner ends of the pressing plates (207) are inserted into the corner grooves (307); The inner end of the pressure plate (207) is connected to an adjusting screw rod (208) via a threaded connection, the lower end of the adjusting screw rod (208) is rotatably provided with a pressure plate (209), a notch (308) is provided on the upper side of the angle groove (307), and the adjusting screw rod (208) is inserted into the notch (308); The lifting rod (212) is provided with threads on its outer circumference. The lifting rod (212) is connected to an internal threaded sleeve (213). The internal threaded sleeve (213) is rotatably mounted on the frame plate (201). A gear (214) is provided at the lower end of the internal threaded sleeve (213). A rack (215) is meshed with the gear (214). A concave member (216) is installed on the other side of the rack (215). At least one guide rod (217) is provided on the concave member (216). A T-shaped plate (219) is slidably mounted on the guide rod (217). A slide rail (220) is slidably mounted on the upper end of the T-shaped plate (219). The slide rail (220) is mounted on the frame plate (201). A spring (218) is provided on the outer end of the guide rod (217). The inner end of the spring (218) acts on the guide rod (217). On the T-shaped plate (219), an inclined groove (221) is provided at one end of the concave member (216), the outer end of the inclined groove (221) extends inwardly at an angle, an end groove (222) is provided at the inner end of the inclined groove (221), the length direction of the end groove (222) is parallel to the length direction of the concave member (216), a movable pressure rod (226) is movably provided in the inclined groove (221) and the end groove (222), an inner extension arm (225) is provided at the lower end of the movable pressure rod (226), a sliding sleeve (224) is installed at the outer end of the inner extension arm (225), a sliding rail (223) is provided on the sliding sleeve (224), the sliding rail (223) is installed on the frame plate (201), and the length direction of the sliding rail (223) is parallel to the length direction of the sliding rail (220); A bidirectional cylinder (232) is provided between the inner ends of the sliding sleeves (224) on the same side, and the bidirectional cylinder (232) is installed on the lower side of the frame plate (201); A plurality of lower extension rods (227) are mounted on the frame plate (201); a paddle (228) is rotatably provided at the lower end of the lower extension rod (227); a torsion spring (229) is sleeved at the lower end of the lower extension rod (227); the lower end of the torsion spring (229) is fixed to the lower extension rod (227); the upper end of the torsion spring (229) is fixed to the paddle (228); a stop pin (230) is provided on one side of the paddle (228); the stop pin (230) is disposed on the frame plate (201); the stop pin (230) acts on the back side of the paddle (228) to limit the rotation of the paddle (228); The positioning mechanism (4) comprises a side plate (400) installed between each pair of pillars (231), a pair of waist-shaped holes (401) are provided on the side plate (400), the waist-shaped holes (401) are arranged vertically, a capped guide rod (402) is movably provided in the waist-shaped hole (401), a movable outer plate (403) is installed at the outer end of the capped guide rod (402), a pair of guide transverse holes (404) are respectively provided at both ends of the movable outer plate (403), a movable through rod (420) is inserted in the guide transverse hole (404), and a limit outer plate (421) is installed at the outer end of the movable through rod (420) The limiting outer plate (421) is located on the outer side of the movable outer plate (403), the inner end of the movable penetration rod (420) is installed with a movable inner plate (419), the inner side of the movable inner plate (419) is provided with a flat plate (422), an inclined hole (423) is opened on the flat plate (422), the inner side end of the inclined hole (423) extends outwardly, the inner side end of the flat plate (422) is provided with an end clamping plate (424), the lower wall of the end clamping plate (424) is provided with an end clamping groove (425), the inner side of the side plate (400) is installed with a rotating cylinder (406), the rotating shaft of the rotating cylinder (406) is eccentrically A top pressing wheel (407) is provided on the ground, a rectangular hole (405) is provided on the movable outer plate (403), the top pressing wheel (407) is located in the rectangular hole (405), a pull-out plate (414) is passed through the upper end of the movable outer plate (403), a side clamping plate (415) is installed on the inner side end of the pull-out plate (414), a side clamping groove (416) is provided on the lower wall of the side clamping plate (415), a pair of limiting screws (413) are provided on the outer side end of the pull-out plate (414), a vertical plate (411) is sleeved on the limiting screw (413), and a waist-shaped vertical hole (412) is provided on the vertical plate (411) The limiting screw (413) is passed through the waist-shaped vertical hole (412), the lower end of the vertical plate (411) is provided with a pull rod (410), the inner end of the pull rod (410) is installed with an inner top horizontal plate (409), the inner side of the side plate (400) is installed with a positioning cylinder (408), the movable end of the positioning cylinder (408) is arranged on the inner top horizontal plate (409), the inner end of the pull plate (414) is installed with a transverse arm (417), and the two ends of the transverse arm (417) are rotatably provided with end clamp push rods (418), and the lower end of the end clamp push rod (418) is passed through the inclined hole (423).

2. The laser cutting positioning tool according to claim 1, characterized in that: A window (313) is provided on one side of the suction disc (301), a filter screen plate (314) is inserted into the interior of the suction disc (301), an end blocking plate (315) is provided at the outer end of the filter screen plate (314), and the end blocking plate (315) is embedded in the window (313).

3. The laser cutting positioning tool according to claim 2, characterized in that: A limiting convex edge (310) is provided at the inner lower end of the suction plate (301), a plurality of inverted V-plates (312) are provided on two opposite sides of the limiting convex edge (310), an upper clamping plate (311) is provided above the limiting convex edge (310), a filter screen plate (314) is located on the upper side of the limiting convex edge (310), and the upper clamping plate (311) is located on the upper side of the filter screen plate (314) to limit the position of the filter screen plate (314), and the inverted V-plates (312) are used to support the filter screen plate (314).

4. The laser cutting positioning tool according to claim 2, characterized in that: The outer end of the window (313) is in a conical structure, and the opening size of the outer end of the window (313) is larger than the opening size of the inner end thereof; the outer edge of the end blocking plate (315) is in a conical structure, and the size of the inner end of the outer edge of the end blocking plate (315) is smaller than the size of the outer end thereof.

5. The laser cutting positioning tool according to claim 2, characterized in that: The inner wall of the end blocking plate (315) is provided with a clamping strip (316), the upper end of the clamping strip (316) is opened to form a V-groove, a sealing strip is embedded in the V-groove, a movable plate (317) is provided at the upper end of the sealing strip, a pair of limiting vertical holes (318) are provided on the movable plate (317), a limiting pin (319) is inserted into the limiting vertical holes (318), the limiting pin (319) is arranged on one side of the suction plate (301), a transverse hole (323) is provided on the movable plate (317), a push rod is inserted into the transverse hole (323), a rotating plate (322) is provided at the inner side end of the push rod, a rotating shaft (320) is provided at the upper end of the rotating plate (322), the rotating shaft (320) is rotatably arranged on one side of the suction plate (301), and a rotating cap (321) is provided at the outer side end of the rotating shaft (320).

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