A special tool for welding liquid crystal screen of electric energy meter and its use method

Abstract

The present invention discloses a special tool for welding the LCD screen of an electric energy meter and a method for using the tool, comprising a machine body, wherein a manipulator is installed at a position near the left side of the top of the machine body. The present invention sequentially grabs a circuit board and a liquid crystal screen from two external production conveyor lines through a manipulator, a first clamping mechanism clamps the circuit board, and makes the gold fingers on the circuit board face downward, and a second clamping mechanism clamps the middle position of the tail of the liquid crystal screen, and the liquid crystal screen moves to the bottom of the circuit board, and then under the action of the adjustment and welding mechanism, the gold fingers of the liquid crystal screen and the circuit board are aligned and welded, and the liquid crystal screen is flipped and accurately placed on the top of the circuit board, and finally the A and K pins below the circuit board are welded by the welding head, which is convenient and quick. The present invention can weld the gold fingers at any position in the length direction or width direction of the circuit board, has strong practicality, does not require manual operation, and realizes automatic batch processing.

Description

Technical Field

[0001] The invention relates to the technical field of electric energy meter production, and in particular to a special tool for welding a liquid crystal screen of an electric energy meter and a use method thereof. Background Art

[0002] An electric energy meter is an instrument used to measure electrical energy. It is also called an watt-hour meter, fire meter, or kilowatt-hour meter. It refers to an instrument that measures various electrical quantities. The electric energy meter can be directly connected to the circuit for measurement.

[0003] During the production process of the electric energy meter, the circuit board and the LCD screen need to be welded together. In the prior art, a worker aligns the gold fingers on the circuit board and the LCD screen, presses them, and then welds the gold fingers of the two together. Then, the LCD screen is turned over, and the A and K pins are welded to achieve a fixed connection between the circuit board and the LCD screen. This method is more troublesome, increases labor costs, and has low efficiency, which is not conducive to the mass production of electric energy meters. Summary of the invention

[0004] In order to solve the above technical problems, a special tooling for welding the LCD screen of an electric energy meter and a method for using the same are provided. The technical solution solves the problem that in the prior art proposed in the above background technology, a worker aligns the positions of the gold fingers on the circuit board and the LCD screen, presses them, and then welds the gold fingers of the two together, then flips the LCD screen, and then welds the A and K pins, thereby achieving a fixed connection between the circuit board and the LCD screen. This method is more troublesome, increases labor costs, and has low efficiency, which is not conducive to mass production of electric energy meters.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A special tool for welding an LCD screen of an electric energy meter comprises a body, a manipulator is installed at a position near the left side of the top of the body, the manipulator is used to grab a circuit board and an LCD screen from two external production conveyor lines, a circuit strip is connected to the head of the LCD screen, gold fingers are provided on both the circuit board and the circuit strip, a first clamping mechanism is installed at the middle of the top of the body, the first clamping mechanism is used to clamp the circuit board, a second clamping mechanism is provided at the rear side of the top of the body, the second clamping mechanism is used to clamp the tail of the LCD screen, and an adjustment and welding mechanism is installed at the rear side of the top of the body, the adjustment and welding mechanism is used to adjust the position of the circuit strip and weld the circuit board and the LCD screen.

[0007] Preferably, the first clamping mechanism includes a first fixing plate and a second fixing plate, the first fixing plate being fixedly connected to the middle of the top end of the body, the second fixing plate being provided with two groups and being respectively welded to the front and rear sides of the top end of the body, the first guide rod being fixedly installed on the side where the second fixing plate and the first fixing plate are close to each other, the second fixing plate and the first fixing plate are internally rotatably connected with the first screw rod through a bearing, the outer surface of the first screw rod is threadedly connected with a movable plate, one end of the first screw rod is fixedly connected to the output end of the first stepper motor, the first stepper motor is installed on the outer side of the second fixing plate, and the movable plate is slidably connected to the outer surface of the first guide rod, the first driving motor is provided on the outer side of the movable plate, the output end of the first driving motor is fixedly connected to the first driving wheel, the inner rotatable connection of the movable plate is a rotating member, the bottom of the outer surface of the rotating member is fixedly connected to the first driven wheel, and the first driving wheel is transmission connected to the first driven wheel through a first belt.

[0008] Preferably, the interior of the rotating member is rotatably connected to a second screw rod, a second guide rod is also fixedly installed inside the rotating member, a lifting plate is slidably connected to the second guide rod, the lifting plate is threadedly connected to the second screw rod, a second stepping motor is fixedly installed on the top of the rotating member, one end of the second screw rod is fixedly connected to the output end of the second stepping motor, a rotating rod is rotatably connected to the lifting plate, a driven gear is installed on the outer surface of the rotating rod, a transmission motor is arranged on the outer side of the lifting plate, a driving gear is fixedly connected to the output end of the transmission motor, the driving gear is meshed with the driven gear, and the outer end of the rotating rod is fixedly connected to the A frame is fixedly connected, and a first screw is rotatably connected inside the frame. The threads at both ends of the first screw rotate in opposite directions, and two groups of first connecting rods are fixedly installed inside the frame, and two groups of movable frames are slidably connected to the first connecting rods. The two groups of movable frames are respectively threadedly connected to the two ends of the outer surface of the first screw, and a first servo motor is installed on the outside of the frame. The output end of the first servo motor extends to the inside of the frame and is fixedly connected to one end of the first screw, and an electric push rod is installed on the top of the movable frame, and a pressure plate is arranged inside the movable frame, and the top of the pressure plate is fixedly connected to the output end of the electric push rod.

[0009] Preferably, the second clamping mechanism includes a connecting frame, a third screw rod and a movable part, the connecting frame is welded to the rear side of the top end of the machine body, the third screw rod is rotatably connected to the inner top end of the connecting frame, the movable part is threadedly connected to the outer surface of the third screw rod, the movable part is slidably connected to the third guide rod, and the third guide rod is fixedly connected to the inner top end of the connecting frame, a third stepping motor is fixedly installed on the outer top of the connecting frame, and one end of the third screw rod is fixedly connected to the output end of the third stepping motor.

[0010] Preferably, a fourth screw and a fourth guide rod are provided inside the movable part, the fourth screw rod is rotatably connected to the movable part, the fourth guide rod is welded to the movable part, a movable block is threadedly connected to the outer surface of the fourth screw rod, the movable block is slidably connected to the fourth guide rod, and one end of the fourth screw rod is fixedly connected to the output end of the fourth stepper motor, the fourth stepper motor is fixedly installed on the outside of the movable part, the movable block is rotatably connected to an electric lifting rod, a second driven wheel is fixedly installed on the outer surface of the electric lifting rod, the top of the movable block is rotatably connected to a second driving wheel, the second driving wheel is transmission-connected to the second driven wheel via a second belt, the second driving motor is also fixedly installed on the top of the movable block, and the output end of the second driving motor is fixedly connected to the second driving wheel.

[0011] Preferably, a top plate is fixedly installed at the output end of the electric lifting rod, and second connecting rods are welded at the four corners of the bottom end of the top plate, and the bottom of the second connecting rod is fixedly connected to the bottom plate, and a second screw is rotatably connected between the bottom plate and the top plate, and the threads at both ends of the second screw have opposite rotation directions, and both ends of the outer surface of the second screw are respectively threadedly connected with pressure pieces, and the two groups of pressure pieces are slidably connected to the second connecting rod, and a second servo motor is installed at the bottom of the bottom plate, and the bottom of the second screw is fixedly connected to the output end of the second servo motor.

[0012] Preferably, the adjusting and welding mechanism comprises two groups of fixed blocks, the two groups of fixed blocks are respectively fixedly connected to the front and rear sides of the top end of the machine body, the two groups of fixed blocks are rotatably connected with a fifth screw rod inside, the outer surface of the fifth screw rod is threadedly connected with a moving frame, the moving frame is slidably connected to the fifth guide rod, and the two ends of the fifth guide rod are respectively fixedly connected to the inner sides of the two groups of fixed blocks, one end of the fifth screw rod is fixedly connected to the output end of the fifth stepper motor, the fifth stepper motor is fixedly installed on the outside of one group of the fixed blocks, the moving frame is rotatably connected with a sixth screw rod inside, a sixth guide rod is also welded inside the moving frame, a lifting block is slidably connected to the sixth guide rod, a sixth stepper motor is arranged on the top of the moving frame, the sixth screw rod is fixedly connected to the output end of the sixth stepper motor, and the lifting block is threadedly connected to the sixth screw rod.

[0013] Preferably, a first electric telescopic rod is installed on the outside of the lifting block, and the output end of the first electric telescopic rod is fixedly connected to the first moving plate, the first moving plate is rotatably connected to the first rotating shaft, the bottom of the first rotating shaft is fixedly installed on the output end of the first motor, and the first vacuum suction plate is fixedly installed on the top of the first rotating shaft, a first cylinder is fixedly connected to the outer surface of the first rotating shaft, and a welding head is installed on the output end of the first cylinder, and a second electric telescopic rod is also provided on the outside of the lifting block, the output end of the second electric telescopic rod is fixedly connected to the second moving plate, the second moving plate is rotatably connected to the second rotating shaft, the bottom of the second rotating shaft is fixedly installed on the output end of the second motor, and the top of the second rotating shaft is fixedly installed on the output end of the second motor, a mounting plate is fixedly installed, a flip motor is provided on the outside of the mounting plate, the output end of the flip motor is fixedly connected to a mounting shell, and a third clamping mechanism is provided inside the mounting shell.

[0014] Preferably, the third clamping mechanism includes a guide rail, which is fixedly connected to the interior of the mounting shell, and two groups of tooth plates are slidably connected to the guide rail, and a half gear is also rotatably connected to the interior of the mounting shell, and a first connecting arm is provided on the half gear, and the other end of the first connecting arm is rotatably connected to the second connecting arm, and the other end of the second connecting arm is rotatably connected to the moving part, and a slide groove is provided inside the mounting shell, and the moving part is slidably connected to the slide groove, and a second cylinder is fixedly installed on the inner wall of the mounting shell, and the outer side of the moving part is fixedly installed on the output end of the second cylinder, one group of the tooth plates is fixedly connected to the second vacuum suction plate, and the other group of the tooth plates is fixedly installed to the third cylinder, and the output end of the third cylinder is fixedly connected to the pressure block.

[0015] Compared with the prior art, the present invention provides a special tool for welding the LCD screen of an electric energy meter and a method for using the same, which has the following beneficial effects:

[0016] The present invention uses a manipulator to sequentially grab a circuit board and a liquid crystal screen from two external production conveyor lines, a first clamping mechanism clamps the circuit board and makes the gold fingers on the circuit board face downward, a second clamping mechanism clamps the middle position of the tail of the liquid crystal screen, the liquid crystal screen moves to the bottom of the circuit board, and then under the action of an adjustment and welding mechanism, the gold fingers of the liquid crystal screen and the circuit board are aligned and welded, the liquid crystal screen is then turned over and accurately placed on the top of the circuit board, and finally the A and K pins below the circuit board are welded by a welding head, which is convenient and quick. The present invention can weld the gold fingers at any position in the length direction or width direction of the circuit board, has strong practicality, does not require manual operation, and realizes automated batch processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 A top view of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the circuit board in the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the liquid crystal screen in the present invention;

[0021] Figure 5 It is a structural schematic diagram of the first clamping mechanism in the present invention;

[0022] Figure 6 It is a schematic diagram of the internal structure of the rotating part in the present invention;

[0023] Figure 7 It is a schematic diagram of the internal structure of the frame in the present invention;

[0024] Figure 8 is a schematic structural diagram of the second clamping mechanism in the present invention;

[0025] Fig. 9 It is a structural schematic diagram of the movable block in the present invention;

[0026] Fig.10 For the present invention Fig. 9 Schematic diagram of the proposed enlarged structure at A;

[0027] Fig.11 It is a structural schematic diagram of the adjustment and welding mechanism in the present invention;

[0028] Fig.12 It is a structural schematic diagram of the lifting block in the present invention;

[0029] Fig.13 It is a schematic diagram of the structure of the welding head and the mounting shell in the present invention;

[0030] Fig.14 It is a schematic structural diagram of the third clamping mechanism in the present invention.

[0031] The numbers in the figure are:

[0032] 1. Machine body; 101. Robot; 102. Circuit board; 103. LCD screen; 104. Circuit strip; 105. Gold finger;

[0033] 2. First clamping mechanism; 201. First fixed plate; 202. Second fixed plate; 203. First guide rod; 204. First screw rod; 205. First stepping motor; 206. Movable plate; 207. First driving motor; 208. First driving wheel; 209. Rotating member; 210. First driven wheel; 211. First belt; 212. Second screw rod; 213. Second guide rod; 214. Second stepping motor; 215. Lifting plate; 216. Rotating rod; 217. Frame; 218. Transmission motor; 219. Driving gear; 220. Driven gear; 221. First screw rod; 222. First connecting rod; 223. First servo motor; 224. Movable frame; 225. Electric push rod; 226. Pressing plate;

[0034] 3. Second clamping mechanism; 301. Connecting frame; 302. Third screw rod; 303. Third guide rod; 304. Third stepping motor; 305. Moving part; 306. Fourth screw rod; 307. Fourth guide rod; 308. Fourth stepping motor; 309. Moving block; 310. Electric lifting rod; 311. Second driving wheel; 312. Second driven wheel; 313. Second belt; 314. Second driving motor; 315. Top plate; 316. Second connecting rod; 317. Bottom plate; 318. Second screw rod; 319. Second servo motor; 320. Pressing piece;

[0035] 4. Adjustment and welding mechanism; 401. Fixed block; 402. Fifth screw rod; 403. Fifth guide rod; 404. Fifth stepping motor; 405. Moving frame; 406. Sixth screw rod; 407. Sixth guide rod; 408. Sixth stepping motor; 409. Lifting block; 410. First electric telescopic rod; 411. First moving plate; 412. First rotating shaft; 413. First motor; 414. First vacuum suction plate; 415. First cylinder; 416. Welding head; 417. Second electric telescopic rod; 418. Second moving plate; 419. Second rotating shaft; 420. Second motor; 421. Mounting plate; 422. Flipping motor; 423. Mounting shell;

[0036] 5. The third clamping mechanism; 501. Guide rail; 502. Tooth plate; 503. The second vacuum suction plate; 504. Half gear; 505. The first connecting arm; 506. The second connecting arm; 507. The moving part; 508. The slide groove; 509. The second cylinder; 510. The third cylinder; 511. The pressing block. DETAILED DESCRIPTION

[0037] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations. Example 1

[0038] Please refer to Figure 1-Figure 14 As shown, a special tool for welding the LCD screen of an electric energy meter includes a body 1, a manipulator 101 is installed at a position near the left side of the top of the body 1, the manipulator 101 is used to grab a circuit board 102 and a liquid crystal screen 103 from two external production conveyor lines, a circuit strip 104 is connected to the head of the liquid crystal screen 103, and gold fingers 105 are arranged on the circuit board 102 and the circuit strip 104, and a first clamping mechanism 2 is installed in the middle of the top of the body 1, the first clamping mechanism 2 is used to clamp the circuit board 102, a second clamping mechanism 3 is arranged on the rear side of the top of the body 1, the second clamping mechanism 3 is used to clamp the tail of the liquid crystal screen 103, and an adjustment and welding mechanism 4 is installed on the rear side of the top of the body 1, the adjustment and welding mechanism 4 is used to adjust the position of the circuit strip 104 and weld the circuit board 102 and the liquid crystal screen 103. Example 2

[0039] Please refer to Figure 5 and Figure 6 As shown, the first clamping mechanism 2 includes a first fixing plate 201 and a second fixing plate 202. The first fixing plate 201 is fixedly connected to the middle of the top of the body 1. The second fixing plate 202 is provided with two groups and is respectively welded to the front and rear sides of the top of the body 1. A first guide rod 203 is fixedly installed on the side where the second fixing plate 202 and the first fixing plate 201 are close to each other. The inside of the second fixing plate 202 and the first fixing plate 201 is rotatably connected to the first screw rod 204 through a bearing. The outer surface of the first screw rod 204 is threadedly connected to a movable plate 206. One end of the first screw rod 204 is fixedly connected to At the output end of the first stepper motor 205, the first stepper motor 205 is installed on the outside of the second fixed plate 202, and the movable plate 206 is slidably connected to the outer surface of the first guide rod 203, and a first drive motor 207 is arranged on the outside of the movable plate 206, and the output end of the first drive motor 207 is fixedly connected to the first drive wheel 208, and the internal rotation of the movable plate 206 is connected to the rotating member 209, and the bottom of the outer surface of the rotating member 209 is fixedly connected to the first driven wheel 210, and the first drive wheel 208 is transmission-connected to the first driven wheel 210 via a first belt 211.

[0040] Please refer to Figure 6 and Figure 7As shown, the interior of the rotating member 209 is rotatably connected to the second screw rod 212, and the interior of the rotating member 209 is also fixedly installed with a second guide rod 213, and a lifting plate 215 is slidably connected to the second guide rod 213, and the lifting plate 215 is threadedly connected to the second screw rod 212. A second stepping motor 214 is fixedly installed on the top of the rotating member 209, and one end of the second screw rod 212 is fixedly connected to the output end of the second stepping motor 214. The interior of the lifting plate 215 is rotatably connected to a rotating rod 216, and a driven gear 220 is installed on the outer surface of the rotating rod 216. A transmission motor 218 is arranged on the outer side of the lifting plate 215, and a driving gear 219 is fixedly connected to the output end of the transmission motor 218, and the driving gear 219 is meshed with the driven gear 220, and the outer end of the rotating rod 216 is fixedly connected to the driven gear 220. A frame 217 is fixedly connected, and a first screw rod 221 is rotatably connected inside the frame 217. The threads at both ends of the first screw rod 221 rotate in opposite directions, and two groups of first connecting rods 222 are fixedly installed inside the frame 217. Two groups of movable frames 224 are slidably connected to the first connecting rods 222. The two groups of movable frames 224 are respectively threadedly connected to the two ends of the outer surface of the first screw rod 221. A first servo motor 223 is installed on the outside of the frame 217, and the output end of the first servo motor 223 extends to the inside of the frame 217 and is fixedly connected to one end of the first screw rod 221. An electric push rod 225 is installed on the top of the movable frame 224, and a pressure plate 226 is arranged inside the movable frame 224. The top of the pressure plate 226 is fixedly connected to the output end of the electric push rod 225.

[0041] It can be understood by those skilled in the art that the first screw rod 204 is driven to rotate by the output end of the first stepper motor 205, so that the movable plate 206 slides back and forth along the outer surface of the first guide rod 203. In the present invention, the first stepper motor 205 is provided on both sides, and the output ends of the first stepper motors 205 on both sides can be controlled individually or simultaneously to rotate forward and reverse, so as to control the movable plates 206 on both sides to move closer to or away from each other, thereby changing the distance between the movable frames 224 on the front and rear sides; the second screw rod 212 is driven to rotate by the output end of the second stepper motor 214, so that the lifting plate 215 slides up and down along the outer surface of the second guide rod 213, thereby changing the height of the movable frame 224; the first drive wheel 207 is driven by the output end of the first drive motor 207 208 rotates, and under the action of the first belt 211, the first driven wheel 210 and the rotating member 209 rotate as a whole, so that the movable frame 224 can be oriented toward the manipulator 101 or toward the adjustment and welding mechanism 4; the first screw rod 221 is driven to rotate by the output end of the first servo motor 223, so that the two groups of movable frames 224 connected to the same group of first screw rods 221 are close to or away from each other, and under the action of the output end of the electric push rod 225, the two ends of one side of the circuit board 102 are clamped; the driving gear 219 is driven to rotate by the output end of the transmission motor 218, so that the driven gear 220 and the rotating rod 216 rotate as a whole, driving the frame 217 to rotate, thereby realizing the flipping of the clamped circuit board 102. Example 3

[0042] Please refer to Figure 8 As shown, the second clamping mechanism 3 includes a connecting frame 301, a third screw rod 302 and a movable part 305. The connecting frame 301 is welded to the rear side of the top end of the body 1, the third screw rod 302 is rotatably connected to the inner top end of the connecting frame 301, the movable part 305 is threadedly connected to the outer surface of the third screw rod 302, the movable part 305 is slidably connected to the third guide rod 303, and the third guide rod 303 is fixedly connected to the inner top end of the connecting frame 301, a third stepping motor 304 is fixedly installed on the outer top of the connecting frame 301, and one end of the third screw rod 302 is fixedly connected to the output end of the third stepping motor 304.

[0043] Please refer to Figure 8 and Fig. 9As shown, a fourth screw rod 306 and a fourth guide rod 307 are provided inside the movable part 305, the fourth screw rod 306 is rotatably connected to the movable part 305, the fourth guide rod 307 is welded to the movable part 305, a movable block 309 is threadedly connected to the outer surface of the fourth screw rod 306, the movable block 309 is slidably connected to the fourth guide rod 307, and one end of the fourth screw rod 306 is fixedly connected to the output end of the fourth stepping motor 308, the fourth stepping motor 308 is fixedly installed on the outer side of the movable part 305, an electric lifting rod 310 is rotatably connected inside the movable block 309, a second driven wheel 312 is fixedly installed on the outer surface of the electric lifting rod 310, a second driving wheel 311 is rotatably connected to the top of the movable block 309, the second driving wheel 311 is transmission-connected to the second driven wheel 312 through a second belt 313, a second driving motor 314 is also fixedly installed on the top of the movable block 309, and the output end of the second driving motor 314 is fixedly connected to the second driving wheel 311.

[0044] Please refer to Fig.10 As shown, a top plate 315 is fixedly installed at the output end of the electric lifting rod 310, and second connecting rods 316 are welded at the four corners of the bottom end of the top plate 315. A bottom plate 317 is fixedly connected to the bottom of the second connecting rod 316. A second screw 318 is rotatably connected between the bottom plate 317 and the top plate 315. The threads at both ends of the second screw 318 have opposite rotation directions. Both ends of the outer surface of the second screw 318 are threadedly connected with pressure pieces 320, and the two sets of pressure pieces 320 are slidably connected to the second connecting rod 316. A second servo motor 319 is installed at the bottom of the bottom plate 317, and the bottom of the second screw 318 is fixedly connected to the output end of the second servo motor 319.

[0045] It can be understood by those skilled in the art that the output end of the third stepper motor 304 drives the third screw rod 302 to rotate, so that the movable member 305 slides back and forth along the outer surface of the third guide rod 303, thereby changing the horizontal position of the two groups of pressure pieces 320; the output end of the fourth stepper motor 308 drives the fourth screw rod 306 to rotate, so that the movable block 309 slides back and forth along the outer surface of the fourth guide rod 307, thereby changing the longitudinal position of the two groups of pressure pieces 320; the output end of the electric lifting rod 310 can drive the two groups of pressure pieces 320 to move up and down, thereby changing The second drive wheel 311 is driven to rotate by the output end of the second drive motor 314, and the second driven wheel 312 and the electric lifting rod 310 are rotated as a whole under the drive of the second belt 313, thereby changing the orientation of the two groups of pressure pieces 320, which can be toward the manipulator 101 or toward the first clamping mechanism 2; the second screw 318 is driven to rotate by the output end of the second servo motor 319, so that the two groups of pressure pieces 320 are close to or away from each other, thereby clamping or releasing the middle position of the tail of the LCD screen 103. Example 4

[0046] Please refer to Fig.11 As shown, the adjustment and welding mechanism 4 includes two groups of fixed blocks 401, and the two groups of fixed blocks 401 are respectively fixedly connected to the front and rear sides of the top of the body 1, and the fifth screw rod 402 is rotatably connected inside the two groups of fixed blocks 401. The outer surface of the fifth screw rod 402 is threadedly connected to a moving frame 405, and the moving frame 405 is slidably connected to the fifth guide rod 403, and the two ends of the fifth guide rod 403 are respectively fixedly connected to the inner sides of the two groups of fixed blocks 401, and one end of the fifth screw rod 402 is fixedly connected to the fifth stepping motor. At the output end of 404, the fifth stepper motor 404 is fixedly installed on the outside of one group of fixed blocks 401, the internal rotation of the moving frame 405 is connected with the sixth screw rod 406, the inside of the moving frame 405 is also welded with a sixth guide rod 407, the sixth guide rod 407 is slidably connected with a lifting block 409, and the top of the moving frame 405 is provided with a sixth stepper motor 408, the sixth screw rod 406 is fixedly connected to the output end of the sixth stepper motor 408, and the lifting block 409 is threadedly connected to the sixth screw rod 406.

[0047] Please refer to Fig.12 and Fig.13 As shown, a first electric telescopic rod 410 is installed on the outside of the lifting block 409, and a first moving plate 411 is fixedly connected to the output end of the first electric telescopic rod 410. A first rotating shaft 412 is rotatably connected inside the first moving plate 411. The bottom of the first rotating shaft 412 is fixedly installed on the output end of the first motor 413, and a first vacuum suction plate 414 is fixedly installed on the top of the first rotating shaft 412. A first cylinder 415 is fixedly connected to the outer surface of the first rotating shaft 412, and a welding head 416 is installed on the output end of the first cylinder 415, and the lifting block 409 A second electric telescopic rod 417 is also provided on the outside, and the output end of the second electric telescopic rod 417 is fixedly connected to a second movable plate 418, and the second movable plate 418 is internally rotatably connected to a second rotating shaft 419, and the bottom of the second rotating shaft 419 is fixedly installed on the output end of the second motor 420, and a mounting plate 421 is fixedly installed on the top of the second rotating shaft 419, and a flip motor 422 is provided on the outside of the mounting plate 421, and the output end of the flip motor 422 is fixedly connected to a mounting shell 423, and a third clamping mechanism 5 is provided inside the mounting shell 423.

[0048] Please refer to Fig.14As shown, the third clamping mechanism 5 includes a guide rail 501, which is fixedly connected to the inside of the mounting shell 423, and two groups of tooth plates 502 are slidably connected to the guide rail 501. A half gear 504 is also rotatably connected to the inside of the mounting shell 423. A first connecting arm 505 is provided on the half gear 504, and the other end of the first connecting arm 505 is rotatably connected to the second connecting arm 506, and the other end of the second connecting arm 506 is rotatably connected to a moving member 507. A slide groove 508 is provided inside the mounting shell 423, and the moving member 507 is slidably connected to the slide groove 508. A second cylinder 509 is fixedly installed on the inner wall of the mounting shell 423, and the outer side of the moving member 507 is fixedly installed on the output end of the second cylinder 509, one group of tooth plates 502 is fixedly connected to the second vacuum suction plate 503, and the other group of tooth plates 502 is fixedly installed to the third cylinder 510, and the output end of the third cylinder 510 is fixedly connected to the pressing block 511.

[0049] It can be understood by those skilled in the art that the fifth lead screw 402 is driven to rotate by the output end of the fifth stepper motor 404, so that the moving frame 405 slides back and forth along the outer surface of the fifth guide rod 403, thereby changing the longitudinal position of the moving frame 405, the first vacuum suction plate 414 and the second vacuum suction plate 503; the sixth lead screw 406 is driven to rotate by the output end of the sixth stepper motor 408, so that the lifting block 409 slides up and down along the outer surface of the sixth guide rod 407, thereby changing the vertical position of the moving frame 405, the first vacuum suction plate 414 and the second vacuum suction plate 503; the output ends of the first electric telescopic rod 410 and the second electric telescopic rod 417 are used to change the vertical position of the first vacuum suction plate 414. 14 and the second vacuum suction plate 503 are in a horizontal upward position; the first vacuum suction plate 414 and the mounting shell 423 are rotated by the output ends of the first motor 413 and the second motor 420; and the working principle of the third clamping mechanism 5 is as follows: by controlling the extension or retraction of the output end of the third cylinder 510, the two groups of half gears 504 are rotated, driving the two groups of tooth plates 502 to approach or move away from each other, so that the second vacuum suction plate 503 and the pressure block 511 cooperate to clamp the outer side of the liquid crystal screen 103, and by extending or retracting the output end of the third cylinder 510, the pressure block 511 can be extended to the outside of the mounting shell 423, or retracted to the inside of the mounting shell 423.

[0050] The working principle and use process of this device are as follows: First, the manipulator 101 grabs the circuit board 102 from the external production conveyor line, and the movable plate 206 is moved to the middle of the top of the body 1 through the output end of the first stepper motor 205, and the movable frame 224 is driven toward the manipulator 101 through the output end of the first drive motor 207. Through the cooperation of the first servo motor 223 and the output end of the electric push rod 225, the two ends of one side of the circuit board 102 are clamped. After that, the movable plate 206 is reset, and the position of the movable frame 224 is also reset. If the gold finger 105 on the circuit board 102 is facing upward at this time, the clamped circuit board 102 is turned over by the output end of the transmission motor 218, so that the gold finger 105 on the circuit board 102 faces upward. Next, the manipulator 101 grabs the LCD screen 103 from the external production conveyor line, and the two groups of pressing pieces 320 are directed toward the manipulator 101 through the output end of the second drive motor 314. Under the cooperation of the third stepper motor 304, the fourth stepper motor 308 and the electric lifting rod 310, the two groups of pressing pieces 320 are moved to the position adapted to the manipulator 101. Under the action of the second servo motor 319, the two groups of pressing pieces 320 are brought close to each other to clamp the middle position of the tail of the LCD screen 103. Then, under the action of the output end of the second drive motor 314, the two groups of pressing pieces 320 and the LCD screen 103 are directed toward the clamped circuit board 102 as a whole, and continue to be moved by the third stepper motor 304, the fourth stepper motor 308 and the electric lifting rod 310. 10, the LCD screen 103 moves to the bottom of the circuit board 102, and the first vacuum suction plate 414 moves to the bottom of the gold finger 105 on the LCD screen 103 through the cooperation of the fifth stepper motor 404, the sixth stepper motor 408 and the first electric telescopic rod 410, and adsorbs the gold finger 105. Then the first vacuum suction plate 414 drives the gold finger 105 of the LCD screen 103 to fit and align with the gold finger 105 under the circuit board 102. Under the action of the welding head 416, the gold fingers 105 of the two are welded together. Then, the second vacuum suction plate 503 and the pressing block 511 move to the LCD screen 103 through the cooperation of the fifth stepper motor 404, the sixth stepper motor 408 and the second electric telescopic rod 417. The front side of the LCD screen 103 is moved closer to the pressure block 511 by the output end of the third cylinder 510, and the front side of the LCD screen 103 is clamped. Then, under the action of the flip motor 422, the LCD screen 103 is rotated, and the LCD screen 103 is placed directly above the circuit board 102, and the circuit board 102 is in a horizontal position. Then, the output end of the third cylinder 510 is retracted, and the pressure block 511 is retracted to the inside of the mounting shell 423. The second vacuum suction plate 503 is started to strongly adsorb the LCD screen 103. Then, with the cooperation of the fifth stepper motor 404, the sixth stepper motor 408 and the second electric telescopic rod 417, the back of the LCD screen 103 is accurately placed on the top of the circuit board 102.Finally, the A and K pins at the bottom of the circuit board 102 are welded by the welding head 416 to connect the LCD screen 103 and the circuit board 102 together;

[0051] It is worth noting that the above are the welding steps when the gold finger 105 is in the length direction of the circuit board 102. If the gold finger 105 is in the width direction of the circuit board 102, then one group of the first clamping mechanisms 2 clamps the two ends of one side of the circuit board 102. Next, it is only necessary to adjust the orientation of the LCD screen 103, as well as the orientation of the first vacuum suction plate 414 and the mounting shell 423, and repeat the above steps to achieve welding. Since the present invention clamps the two ends of one side of the circuit board 102 through one group of the first clamping mechanisms 2, if the position of the gold finger 105 on the circuit board 102 is under the extrusion of the pressure plate 226, there is a dead angle. At this time, it is only necessary to replace another group of the first clamping mechanisms 2 to clamp the two ends of the other side of the circuit board 102. Therefore, the present invention is highly practical and does not require manual operation to achieve automated batch processing.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A special tool for welding an electric energy meter liquid crystal screen, comprising a body (1), characterized in that: A manipulator (101) is installed at a position near the left side of the top of the body (1), and the manipulator (101) is used to grab a circuit board (102) and a liquid crystal screen (103) from two external production conveyor lines. The head of the liquid crystal screen (103) is connected to a circuit bar (104), and both the circuit board (102) and the circuit bar (104) are provided with gold fingers (105). A first clamping mechanism (2) is installed at the middle of the top of the body (1), and the first clamping mechanism (2) is used to clamp the circuit board (102). A second clamping mechanism (3) is installed at the rear side of the top of the body (1), and the second clamping mechanism (3) is used to clamp the tail of the liquid crystal screen (103). An adjustment and welding mechanism (4) is installed at the rear side of the top of the body (1), and the adjustment and welding mechanism (4) is used to adjust the position of the circuit bar (104) and weld the circuit board (102) and the liquid crystal screen (103). The first clamping mechanism (2) comprises a first fixing plate (201) and a second fixing plate (202); the first fixing plate (201) is fixedly connected to the middle of the top end of the machine body (1); two sets of second fixing plates (202) are provided and are respectively welded to the front and rear sides of the top end of the machine body (1); a first guide rod (203) is fixedly installed on one side of the second fixing plate (202) and the first fixing plate (201) close to each other; a first screw rod (204) is rotatably connected to the inside of the second fixing plate (202) and the first fixing plate (201) via a bearing; a movable plate (206) is threadedly connected to the outer surface of the first screw rod (204); one end of the first screw rod (204) is fixedly connected to the movable plate (206); At the output end of the first stepper motor (205), the first stepper motor (205) is mounted on the outside of the second fixed plate (202), and the movable plate (206) is slidably connected to the outer surface of the first guide rod (203), a first drive motor (207) is arranged on the outside of the movable plate (206), the output end of the first drive motor (207) is fixedly connected to the first drive wheel (208), the inside of the movable plate (206) is rotatably connected to a rotating member (209), the bottom of the outer surface of the rotating member (209) is fixedly connected to the first driven wheel (210), and the first drive wheel (208) is transmission-connected to the first driven wheel (210) via a first belt (211); The rotating member (209) is rotatably connected to a second screw rod (212) inside, a second guide rod (213) is fixedly installed inside the rotating member (209), a lifting plate (215) is slidably connected to the second guide rod (213), the lifting plate (215) is threadedly connected to the second screw rod (212), a second stepping motor (214) is fixedly installed on the top of the rotating member (209), one end of the second screw rod (212) is fixedly connected to the output end of the second stepping motor (214), a rotating rod (216) is rotatably connected inside the lifting plate (215), a driven gear (220) is installed on the outer surface of the rotating rod (216), a transmission motor (218) is arranged on the outer side of the lifting plate (215), a driving gear (219) is fixedly connected to the output end of the transmission motor (218), the driving gear (219) is meshed with the driven gear (220), and the outer surface of the rotating rod (216) is fixedly connected to the second guide rod (213). The frame (217) is fixedly connected to the end thereof, the frame (217) is rotatably connected to the inside thereof with a first screw rod (221), the screw threads at the two ends of the first screw rod (221) are in opposite rotation directions, two groups of first connecting rods (222) are fixedly installed inside the frame (217), two groups of movable frames (224) are slidably connected to the first connecting rods (222), the two groups of movable frames (224) are respectively threadedly connected to the two ends of the outer surface of the first screw rod (221), a first servo motor (223) is installed outside the frame (217), the output end of the first servo motor (223) extends to the inside of the frame (217) and is fixedly connected to one end of the first screw rod (221), an electric push rod (225) is installed on the top of the movable frame (224), a pressing plate (226) is arranged inside the movable frame (224), and the top of the pressing plate (226) is fixedly connected to the output end of the electric push rod (225); The second clamping mechanism (3) comprises a connecting frame (301), a third screw rod (302) and a movable part (305); the connecting frame (301) is welded to the rear side of the top end of the machine body (1); the third screw rod (302) is rotatably connected to the inner top end of the connecting frame (301); the movable part (305) is threadedly connected to the outer surface of the third screw rod (302); the movable part (305) is slidably connected to the third guide rod (303); the third guide rod (303) is fixedly connected to the inner top end of the connecting frame (301); a third stepping motor (304) is fixedly mounted on the outer top of the connecting frame (301); and one end of the third screw rod (302) is fixedly connected to the output end of the third stepping motor (304); A fourth screw rod (306) and a fourth guide rod (307) are arranged inside the movable part (305); the fourth screw rod (306) is rotatably connected to the movable part (305); the fourth guide rod (307) is welded to the movable part (305); a movable block (309) is threadedly connected to the outer surface of the fourth screw rod (306); the movable block (309) is slidably connected to the fourth guide rod (307); one end of the fourth screw rod (306) is fixedly connected to the output end of the fourth stepping motor (308); the fourth stepping motor (308) is fixedly mounted on the movable part ( 305), the movable block (309) is internally rotatably connected to an electric lifting rod (310), a second driven wheel (312) is fixedly mounted on the outer surface of the electric lifting rod (310), the top of the movable block (309) is rotatably connected to a second driving wheel (311), the second driving wheel (311) is transmission-connected to the second driven wheel (312) via a second belt (313), a second driving motor (314) is also fixedly mounted on the top of the movable block (309), and an output end of the second driving motor (314) is fixedly connected to the second driving wheel (311); A top plate (315) is fixedly mounted on the output end of the electric lifting rod (310), second connecting rods (316) are welded at the four corners of the bottom end of the top plate (315), a bottom plate (317) is fixedly connected to the bottom of the second connecting rod (316), a second screw rod (318) is rotatably connected between the bottom plate (317) and the top plate (315), the threads at both ends of the second screw rod (318) are in opposite rotation directions, pressing pieces (320) are respectively threadedly connected at both ends of the outer surface of the second screw rod (318), both sets of pressing pieces (320) are slidably connected to the second connecting rod (316), a second servo motor (319) is mounted on the bottom of the bottom plate (317), and the bottom of the second screw rod (318) is fixedly connected to the output end of the second servo motor (319); The adjusting and welding mechanism (4) comprises two groups of fixed blocks (401), the two groups of fixed blocks (401) are respectively fixedly connected to the front and rear sides of the top of the machine body (1), the two groups of fixed blocks (401) are internally rotatably connected to a fifth screw rod (402), the outer surface of the fifth screw rod (402) is threadedly connected to a moving frame (405), the moving frame (405) is slidably connected to a fifth guide rod (403), and the two ends of the fifth guide rod (403) are respectively fixedly connected to the inner sides of the two groups of fixed blocks (401), and one end of the fifth screw rod (402) is fixedly connected to the fifth stepping motor (403). 4), a fifth stepping motor (404) is fixedly mounted on the outside of one of the fixed blocks (401), a sixth screw rod (406) is rotatably connected to the inside of the moving frame (405), a sixth guide rod (407) is welded inside the moving frame (405), a lifting block (409) is slidably connected to the sixth guide rod (407), a sixth stepping motor (408) is arranged on the top of the moving frame (405), the sixth screw rod (406) is fixedly connected to the output end of the sixth stepping motor (408), and the lifting block (409) is threadedly connected to the sixth screw rod (406); The lifting block (409) is provided with a first electric telescopic rod (410) on the outside, the output end of the first electric telescopic rod (410) is fixedly connected to a first moving plate (411), the first moving plate (411) is internally rotatably connected to a first rotating shaft (412), the bottom of the first rotating shaft (412) is fixedly installed on the output end of a first motor (413), the top of the first rotating shaft (412) is fixedly installed with a first vacuum suction plate (414), the outer surface of the first rotating shaft (412) is fixedly connected to a first cylinder (415), the output end of the first cylinder (415) is provided with a welding head (416), and the lifting block (409) is provided with a first electric telescopic rod (410) on the outside, the output end of the first electric telescopic rod (410) is fixedly connected to a first moving plate (411), and the first moving plate (411) is internally rotatably connected to a first rotating shaft (412), the bottom of the first rotating shaft (412) is fixedly installed on the output end of a first motor (413), the top of the first rotating shaft (412) is fixedly installed with a first vacuum suction plate (414), the outer surface of the first rotating shaft (412) is fixedly connected to a first cylinder (415), the output end of the first cylinder (415) is provided with a welding head (416), and the lifting block (409) is provided with a first electric telescopic rod (410) on the outside, and the first electric telescopic rod (410) is fixedly connected to a first moving plate (411), and the first electric telescopic rod (410) is fixedly connected to a first moving plate (411), and the lifting block (409) is provided with a first electric telescopic rod (410) on the outside, and the first electric telescopic rod (410) is fixedly connected to a first moving plate (411), and the first A second electric telescopic rod (417) is also provided on the outside, the output end of the second electric telescopic rod (417) is fixedly connected to a second moving plate (418), the second moving plate (418) is rotatably connected to a second rotating shaft (419) inside, the bottom of the second rotating shaft (419) is fixedly mounted on the output end of a second motor (420), a mounting plate (421) is fixedly mounted on the top of the second rotating shaft (419), a flip motor (422) is provided on the outside of the mounting plate (421), the output end of the flip motor (422) is fixedly connected to a mounting shell (423), and a third clamping mechanism (5) is provided inside the mounting shell (423); The third clamping mechanism (5) comprises a guide rail (501), the guide rail (501) is fixedly connected to the inside of the mounting shell (423), two sets of toothed plates (502) are slidably connected to the guide rail (501), a half gear (504) is rotatably connected to the inside of the mounting shell (423), a first connecting arm (505) is provided on the half gear (504), the other end of the first connecting arm (505) is rotatably connected to the second connecting arm (506), the other end of the second connecting arm (506) is rotatably connected to the moving member (507), and the mounting shell (423) is provided with a first connecting arm (505). A slide groove (508) is provided inside the shell (423), the movable member (507) is slidably connected to the slide groove (508), a second cylinder (509) is fixedly installed on the inner wall of the mounting shell (423), the outer side of the movable member (507) is fixedly installed on the output end of the second cylinder (509), one set of tooth plates (502) is fixedly connected to the second vacuum suction plate (503), the other set of tooth plates (502) is fixedly installed to the third cylinder (510), and the output end of the third cylinder (510) is fixedly connected to the pressing block (511).

2. A method for using the special tooling for welding the LCD screen of an electric energy meter as claimed in claim 1, characterized in that: include: S1, the manipulator (101) grabs the circuit board (102) from the external production conveyor line, and moves the movable plate (206) to the middle of the top of the body (1) through the output end of the first stepper motor (205), and drives the movable frame (224) toward the manipulator (101) through the output end of the first drive motor (207), and through the cooperation of the first servo motor (223) and the output end of the electric push rod (225), the two ends of one side of the circuit board (102) are clamped, and then the movable plate (206) is reset, and the position of the movable frame (224) is also reset. If the gold finger (105) on the circuit board (102) is facing upward, the clamped circuit board (102) is driven to flip through the output end of the transmission motor (218), so that the gold finger (105) on the circuit board (102) faces downward; S2, the manipulator (101) grabs the liquid crystal screen (103) from the external production conveyor line, and makes the two groups of pressing pieces (320) face the manipulator (101) through the output end of the second drive motor (314), and under the coordinated action of the third stepper motor (304), the fourth stepper motor (308) and the electric lifting rod (310), the two groups of pressing pieces (320) move to a position that matches the manipulator (101), and under the action of the second servo motor (319), the two groups of pressing pieces (320) are moved closer to each other to clamp the middle position of the tail of the liquid crystal screen (103); S3, under the action of the output end of the second driving motor (314), the two groups of pressing pieces (320) and the liquid crystal screen (103) are integrally oriented toward the clamped circuit board (102), and the third stepping motor (304), the fourth stepping motor (308) and the electric lifting rod (310) are continued to move the liquid crystal screen (103) to the bottom of the circuit board (102), and the first vacuum suction plate (414) is moved to the bottom of the gold finger (105) on the liquid crystal screen (103) and adsorbs the gold finger (105) through the coordinated action of the fifth stepping motor (404), the sixth stepping motor (408) and the first electric telescopic rod (410), and then the first vacuum suction plate (414) drives the gold finger (105) of the liquid crystal screen (103) to fit and align with the gold finger (105) below the circuit board (102), and the gold fingers (105) of the two are welded together under the action of the welding head (416); S4. The second vacuum suction plate (503) and the pressing block (511) are moved to the side of the head of the liquid crystal screen (103) by the cooperation of the fifth stepper motor (404), the sixth stepper motor (408) and the second electric telescopic rod (417). The second vacuum suction plate (503) and the pressing block (511) are moved closer to each other by the output end of the third cylinder (510) to clamp the side of the head of the liquid crystal screen (103). Then, the liquid crystal screen (103) is rotated by the flip motor (422) so that the liquid crystal screen (103) is located at the positive side of the circuit board (102). The liquid crystal screen (103) is placed on the top of the circuit board (102) and the circuit board (102) is in a horizontal position. The output end of the third cylinder (510) is retracted, the pressure block (511) is retracted into the interior of the mounting shell (423), the second vacuum suction plate (503) is started, and the liquid crystal screen (103) is strongly adsorbed. Then, the back of the liquid crystal screen (103) is accurately placed on the top of the circuit board (102) through the cooperation of the fifth stepper motor (404), the sixth stepper motor (408) and the second electric telescopic rod (417). Finally, the A and K pins at the bottom of the circuit board (102) are welded through the welding head (416).

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