A neon lamp production wire repair machine capable of automatically screening defective products

Abstract

The present invention discloses a wire repairing machine for neon lamp production that can automatically screen out defective products, comprising a screening group, a transfer group, a positioning group and a welding group that are arranged in sequence; the screening group comprises a vibrating plate, an electromagnet arranged at the bottom of the vibrating plate, and a conveying channel connected to one side of the vibrating plate and inclined downward, the conveying channel is connected to the vibrating plate; the transfer group comprises a storage plate, a feeding hopper connected to one side of the storage plate, the inner diameter of the lower part of the feeding hopper is equal to the diameter of the neon lamp, and the storage plate is located below the conveying channel. The neon lamp is placed in the vibrating plate of the screening group. Since the vibrating plate is provided with an electromagnet, the electromagnet generates magnetism after being energized, and the resistance wire on the neon lamp will remain in the vibrating plate due to the adsorption of the electromagnet, while the bulb without resistance wire will slide into the storage plate through the conveying channel, thereby screening out defective products without resistance wire.

Description

Technical Field

[0001] The invention relates to the technical field of neon lamp production equipment, in particular to a wire mending machine for neon lamp production which can automatically screen out defective products. Background Art

[0002] Neon lamp is a neon lamp. The neon lamp tube is a sealed glass tube with electrodes at both ends. It is filled with some low-pressure gas and connected to two resistance wires. When producing neon lamps, some resistance wires may break or some may have welding defects, resulting in product defects.

[0003] At present, it is generally necessary to manually detect whether there is a resistance wire on the neon lamp, and the bulbs without resistance wires need to be manually removed, which makes it inconvenient to screen out defective products. Moreover, after the defective products are screened, it is impossible to weld the resistance wire on the screened bulbs in time, resulting in a high scrap rate of defective products and low efficiency in reprocessing defective products. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a wire repairing machine for neon lamp production which can automatically screen out defective products, so as to solve the problems of inconvenience in screening out defective neon lamps and low efficiency in reprocessing the defective products.

[0005] The problems mentioned in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A wire repairing machine for neon lamp production that can automatically screen out defective products, comprising a screening group, a transfer group, a positioning group and a welding group that are arranged in sequence; the screening group comprises a vibrating plate, an electromagnet arranged at the bottom of the vibrating plate, and a conveying channel connected to one side of the vibrating plate and inclined downward, the conveying channel being connected to the vibrating plate; the transfer group comprises a storage plate, a feeding hopper connected to one side of the storage plate, the inner diameter of the lower part of the feeding hopper is equal to the diameter of the neon lamp, and the storage plate is located below the conveying channel; the positioning group comprises a base, a rotating column rotatably connected to the base, a driving mechanism arranged in the base and used to drive the rotating column to rotate, a rotating plate connected to the upper end of the rotating column, and a positioning mechanism installed on the periphery of the rotating plate, and the positioning mechanism catches the material dropped from the feeding hopper neon lamp and positioning; the welding group includes a machine base, a wire release mechanism installed on the machine base and used to release the resistance wire, an extension plate connected to the machine base and extending above the turntable, a through hole is opened on the extension plate, the through hole is located directly above the positioning mechanism, and the resistance wire passes through the through hole; the welding group also includes a welding mechanism installed on the bottom surface of the extension plate, a U-shaped seat connected to the side of the machine base facing the turntable, a first clamping mechanism installed on the upper part of the U-shaped seat, a lifting mechanism installed on the U-shaped seat, a lifting seat transmission-connected to the lifting mechanism, a second clamping mechanism and a cutting mechanism installed on the lifting seat, the first clamping mechanism, the second clamping mechanism and the cutting mechanism are arranged in sequence from top to bottom; the welding mechanism is arranged opposite to the U-shaped seat.

[0008] Preferably, the driving mechanism includes a first motor installed in the base, a first transmission shaft connected to the first motor through a coupling, a main gear connected to the first transmission shaft, and a sub-gear connected to the rotating column, and the main gear is meshed with the sub-gear.

[0009] The above technical solution controls the first motor to work, drives the first transmission shaft to rotate, and drives the rotating column to rotate through the cooperation of the main gear and the auxiliary gear, thereby driving the rotating disk to rotate.

[0010] Preferably, the positioning mechanism includes a positioning plate, a second motor is installed at the center of the top surface of the positioning plate, the second motor is connected to a rotating rod through a coupling, the rotating rod is connected to a material receiving column, a material receiving groove is opened on the top of the material receiving column, sleeves are connected on both sides of the positioning plate located on the second motor, a rotating shaft is rotatably connected in the sleeve, the upper ends of the two rotating shafts are connected with matching clamps, the opposite surfaces of the two clamps are provided with arc-shaped clamping grooves, the two clamping grooves form a circle after closing, and the circle is aligned with the material receiving column and the feeding hopper, the bottom surface of the positioning plate is connected with a connecting column, the third motor is connected to a second transmission shaft through a coupling, the second transmission shaft is connected to a first gear, the two rotating shafts pass through the positioning plate, and the passing ends are connected with a second gear, the first gear meshes with the second gears on both sides thereof; the positioning plate is fixed to the turntable by bolts, the periphery of the positioning plate is provided with a through mounting hole, and the connecting column is inserted into the mounting hole.

[0011] In the above technical solution, before the positioning mechanism rotates to the bottom of the feeding hopper, the two clamps are separated. When the receiving column reaches directly below the feeding hopper, the light bulb is placed in the feeding hopper, and the light bulb falls downward from the feeding hopper and falls into the receiving groove of the receiving column. Then the third motor works, driving the two second gears to rotate through the first gear, thereby driving the two clamps to move relative to each other, so as to clamp the neon lamp and keep the bulb stable.

[0012] Preferably, the wire-releasing mechanism includes two bearing seats connected to the top surface of the machine base, a retracting shaft rotatably connected to the two bearing seats, and a retracting wheel connected to the retracting shaft, a resistance wire is wound on the retracting wheel, the wire-releasing mechanism also includes a fourth motor installed on one side of the machine base, a third transmission shaft connected to the fourth motor through a coupling, a driving wheel connected to the third transmission shaft, and a driven wheel connected to one end of the retracting shaft, and the driving wheel and the driven wheel are connected by a transmission belt; the wire-releasing mechanism also includes two support plates connected to the extension plate and close to the through hole, and a guide wheel rotatably connected to the two support plates, and the resistance wire is led into the through hole through the guide wheel.

[0013] The above technical solution controls the operation of the fourth motor, and through the cooperation of the driving wheel, the driven wheel and the transmission belt, it can drive the retracting wheel to rotate, thereby releasing the resistance wire. Through the guiding effect of the guide wheel, the resistance wire can be led to the through hole and transported vertically downward from the through hole.

[0014] Preferably, the welding mechanism comprises a first cylinder and a second cylinder hinged to the bottom surface of the extension plate, and a welding gun connected to the telescopic end of the first cylinder, and the telescopic end of the second cylinder is movably connected to the cylinder barrel of the first cylinder.

[0015] In the above technical solution, when the positioning mechanism rotates to the bottom of the extension plate, the second clamping mechanism grabs the resistance wire downward so that the lower end of the resistance wire contacts the light bulb. At the same time, the first motor works to drive the light bulb to rotate and adjust the welding position of the light bulb. Then, the first cylinder works to adjust the distance reached by the welding gun. The second cylinder works to adjust the angle of the welding gun, thereby welding the resistance wire to the light bulb.

[0016] Preferably, the first clamping mechanism includes a third cylinder connected to the upper part of the U-shaped seat and a first finger cylinder connected to the telescopic end of the third cylinder, the first finger cylinder has two first clamping claws, the opposite surfaces of the two first clamping claws are connected to the first clamping rod, and the opposite surfaces of the two first clamping rods are connected to the elastic first rubber block.

[0017] The above technical solution controls the third cylinder to extend so that the first finger cylinder moves toward the resistance wire, and then the first finger cylinder works to make the two first clamping jaws move relative to each other and clamp the resistance wire through the two first clamping rods. The first rubber block is elastic and non-slip, which can better clamp the resistance wire and prevent the resistance wire from rebounding after being cut.

[0018] Preferably, the lifting mechanism includes a screw rod rotatably connected to the U-shaped seat, a guide rod connected to the U-shaped seat, a fifth motor installed under the U-shaped seat and transmission connected to the screw rod, the lifting seat is threadedly connected to the screw rod, and the lifting seat is slidably connected to the guide rod.

[0019] In the above technical solution, the fifth motor is started to drive the screw rod to rotate, and during the rotation of the screw rod, the lifting seat is driven to rise and fall along the guide rod.

[0020] Preferably, the second clamping mechanism includes a fourth cylinder connected to the lifting seat, a second finger cylinder connected to the telescopic end of the fourth cylinder, the second finger cylinder has two second clamping claws, the opposite surfaces of the two second clamping claws are connected to the second clamping rod, and the opposite surfaces of the two second clamping rods are connected to the elastic second rubber block.

[0021] The above technical solution controls the fourth cylinder to extend so that the second finger cylinder moves toward the resistance wire, and then the second finger cylinder works to make the two second clamping claws move relative to each other and clamp the resistance wire through the two second clamping rods. The second rubber block is elastic and non-slip, which can better clamp the resistance wire. Then the lifting seat is driven to descend, which can pull the resistance wire downward and make the resistance wire contact with the light bulb.

[0022] Preferably, the cutting mechanism comprises a fifth cylinder mounted on the lifting seat and pneumatic scissors connected to the telescopic end of the fifth cylinder.

[0023] In the above technical solution, after the resistance wire is welded to the light bulb, the fifth cylinder is controlled to extend, driving the pneumatic scissors to move in the direction of the resistance wire, clamping the resistance wire through the first clamping mechanism, and releasing the second clamping mechanism at the same time, and then cutting the resistance wire through the pneumatic scissors to complete the welding of the resistance wire and the light bulb.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) Place the neon lamp in the vibrating plate of the screening group. Since there is an electromagnet in the vibrating plate, the electromagnet generates magnetism when it is energized. The resistance wire on the neon lamp will remain in the vibrating plate due to the adsorption of the electromagnet, while the bulb without resistance wire will slide into the storage plate through the conveying channel, thereby screening out defective products without resistance wire.

[0026] (2) Manually take out the light bulbs in the storage tray, so that the position to be welded faces upward, and then put the light bulbs into the feeding hopper one by one. The positioning mechanism catches the light bulbs that slide down from the feeding hopper and fixes the light bulbs. By driving the turntable to rotate, the positioning mechanism reaches the bottom of the welding mechanism one by one, releases the resistance wire through the wire release mechanism, pulls the resistance wire downward through the second clamping mechanism, and welds the resistance wire to the light bulb through the welding mechanism. After welding, the resistance wire is clamped by the first clamping mechanism, and cut off by the cutting mechanism, so that the resistance wire is re-welded to the light bulb. Through the above method, the resistance wire can be re-welded on the defective light bulbs one by one, thereby improving the efficiency of handling defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the present invention;

[0028] Figure 2 is a cross-sectional view of the screening portion;

[0029] Figure 3 is a schematic diagram of a positioning mechanism;

[0030] Figure 4 is a schematic diagram of a welding portion and a positioning mechanism;

[0031] Figure 5 is a schematic diagram of a first clamping mechanism;

[0032] Figure 6 is a schematic diagram of a cutting mechanism;

[0033] Figure 7 is a schematic diagram of a second clamping mechanism;

[0034] In the figure: 1-screening group, 2-transfer group, 3-positioning group, 4-welding group, 5-vibrating plate, 6-electromagnet, 7-conveying channel, 8-storage plate, 9-feeding hopper, 10-base, 11-rotating column, 12-driving mechanism, 121-first motor, 122-main gear, 123-secondary gear, 13-rotating plate, 14-positioning mechanism, 141-positioning plate, 142-second motor, 143-receiving column, 144-sleeve, 145-rotating shaft, 146-clamping plate, 147-third motor, 148-first gear, 149-second gear, 15-machine base, 16-wire release mechanism, 161-bearing seat, 162-retracting wheel, 163-fourth motor, 164-driving wheel, 165 -driven wheel, 166-guide wheel, 17-extension plate, 18-through hole, 19-welding mechanism, 191-first cylinder, 192-second cylinder, 193-welding gun, 20-U-shaped seat, 21-first clamping mechanism, 211-third cylinder, 212-first finger cylinder, 213-first clamping rod, 214-first rubber block, 22-lifting mechanism, 221-screw rod, 222-guide rod, 223-fifth motor, 23-lifting seat, 24-second clamping mechanism, 241-fourth cylinder, 242-second finger cylinder, 243-second clamping rod, 244-second rubber block, 25-cutting mechanism, 251-fifth cylinder, 252-pneumatic scissors, 26-light bulb, 27-resistance wire. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1

[0037] See also Figure 1 and Figure 2 , a wire repairing machine for neon lamp production that can automatically screen defective products, including a screening group 1 and a transfer group 2 arranged in sequence; the screening group 1 includes a vibrating plate 5, an electromagnet 6 arranged at the bottom of the vibrating plate, and a conveying channel 7 connected to one side of the vibrating plate and inclined downward, the conveying channel 7 is connected to the vibrating plate 5, and the electromagnet 6 will generate magnetism after being energized. The electromagnet 6 is a prior art and will not be described in detail in this embodiment. The transfer group 2 includes a storage tray 8 and a feeding hopper 9 connected to one side of the storage tray. The storage tray 8 is located below the conveying channel 7, and the bulb that slips from the conveying channel 7 falls into the storage tray 8. The inner diameter of the lower part of the feeding hopper 9 is equal to the diameter of the neon lamp, so that the neon lamp can slide vertically downward in the feeding hopper 9.

[0038] The working principle of this embodiment is:

[0039] A neon lamp is placed in the vibration disk 5 of the screening group 1. Since an electromagnet 6 is provided in the vibration disk 5, magnetism is generated when the electromagnet 6 is energized. The resistance wire on the neon lamp will remain in the vibration disk 5 due to the adsorption of the electromagnet 6, while the bulb without the resistance wire will slide through the conveying channel 7 to the storage tray 8, thereby screening out defective products without the resistance wire.

[0040] The light bulbs without resistance wires are manually taken out of the storage tray 8, the positions to be welded are facing upward, and then the light bulbs are put into the feeding hopper 9 one by one, so that the light bulbs can be transported to the next link.

[0041] Embodiment 2

[0042] A wire repair machine for neon lamp production that can automatically screen out defective products also includes a positioning group 3 and a welding group 4. The positioning group 3 is located between the transfer group 2 and the welding group 4. The positioning group 3 includes a base 10, a rotating column 11 rotatably connected to the base, a driving mechanism 12 arranged in the base and used to drive the rotating column 11 to rotate, a turntable 13 connected to the upper end of the rotating column, and a positioning mechanism 14 installed on the periphery of the turntable 13. The neon lamp dropped from the feeding hopper 9 is caught and positioned by the positioning mechanism 14.

[0043] Specifically, Figure 1 As shown, the driving mechanism 12 includes a first motor 121 installed in the base, a first transmission shaft connected to the first motor through a coupling, a main gear 122 connected to the first transmission shaft, and a sub-gear 123 connected to the rotating column, and the main gear 122 is meshed with the sub-gear 123. The first motor 121 is controlled to work, and the first transmission shaft is driven to rotate. Through the cooperation of the main gear 122 and the sub-gear 123, the rotating column 11 is driven to rotate, thereby driving the rotating disk 13 to rotate. The rotation of the rotating disk 13 drives the positioning mechanism 14 to rotate together, so that the positioning mechanism reaches the bottom of the feeding hopper one by one, thereby catching the light bulbs dropped from the feeding hopper.

[0044] like Figure 3 , Figure 4As shown, the positioning mechanism 14 includes a positioning plate 141, a second motor 142 is installed at the center of the top surface of the positioning plate 141, a rotating rod is connected to the second motor 142 through a coupling, a material receiving column 143 is connected to the rotating rod, a material receiving groove is provided on the top of the material receiving column 143, sleeves 144 are connected to both sides of the second motor on the positioning plate 141, a rotating shaft 145 is rotatably connected in the sleeve 144, and matching clamping plates 146 are connected to the upper ends of the two rotating shafts 145, and arc-shaped clamping grooves are provided on the opposite surfaces of the two clamping plates 146. When the two clamping grooves are closed, a circle is formed, and the circle is connected to the material receiving column 143 and the feeding hopper 9. Aligned, the bottom surface of the positioning plate 141 is connected with a connecting column, a third motor 147 is installed on the connecting column, the third motor 147 is connected with a second transmission shaft through a coupling, the second transmission shaft is connected with a first gear 148, the two rotating shafts 145 pass through the positioning plate 141, and the passing ends are connected with second gears 149, the first gear 148 is meshed with the second gears 149 on both sides thereof; the positioning plate 141 is fixed to the turntable 13 by bolts, the periphery of the positioning plate 141 is provided with a through mounting hole, the connecting column is inserted into the mounting hole, the first gear 148 and the second gear 149 are both located below the turntable 13.

[0045] In order to make the positioning mechanism 14 stop after reaching directly below the feeding hopper 9, a first position sensor (not shown in the drawings) is provided on the feeding hopper 9, and a second position sensor (not shown in the drawings) is provided on the turntable at the periphery of each positioning mechanism. The first position sensor cooperates with the second position sensor so that the receiving column 143 stops moving after reaching directly below the feeding hopper 9.

[0046] The working principle of this embodiment is:

[0047] Before the positioning mechanism 14 is rotated to the bottom of the feeding hopper 9, the two clamping plates 146 are separated. When the receiving column 143 reaches the bottom of the feeding hopper 9, the light bulb 26 is placed in the feeding hopper 9, and the light bulb falls down from the feeding hopper 9 and falls into the receiving groove of the receiving column 143. Then the third motor 147 works, and the two second gears 149 are driven to rotate through the first gear 148, thereby driving the two clamping plates 146 to move relative to each other, and the light bulb is clamped by the clamping grooves on the two clamping plates 146 to keep the light bulb stable. When welding is required, the second motor 142 is controlled to work, drive the receiving column 143 to rotate, and adjust the welding point position of the light bulb to turn the welding point position to a suitable position for convenient welding.

[0048] Embodiment 3

[0049] The welding group 4 includes a machine base 15, a wire releasing mechanism 16 installed on the machine base and used for releasing the resistance wire, an extension plate 17 connected to the machine base and extending above the turntable, a through hole 18 is opened on the extension plate 17, the through hole 18 is located directly above the positioning mechanism 14, and the resistance wire passes through the through hole 18; the welding group 4 also includes a welding mechanism 19 installed on the bottom surface of the extension plate, a U-shaped seat 20 connected to the side of the machine base facing the turntable, a first clamping mechanism 21 installed on the upper part of the U-shaped seat, a lifting mechanism 22 installed on the U-shaped seat, a lifting seat 23 transmission-connected to the lifting mechanism, a second clamping mechanism 24 and a cutting mechanism 25 installed on the lifting seat, the first clamping mechanism 21, the second clamping mechanism 24 and the cutting mechanism 25 are arranged in sequence from top to bottom; the welding mechanism 19 is arranged opposite to the U-shaped seat 20.

[0050] Specifically, the wire-releasing mechanism 16 includes two bearing seats 161 connected to the top surface of the machine base, a retracting shaft rotatably connected to the two bearing seats, and a retracting wheel 162 connected to the retracting shaft, and a resistance wire is wound on the retracting wheel 162. The wire-releasing mechanism 16 also includes a fourth motor 163 installed on one side of the machine base, a third transmission shaft connected to the fourth motor through a coupling, a driving wheel 164 connected to the third transmission shaft, and a driven wheel 165 connected to one end of the retracting shaft. The driving wheel 164 and the driven wheel 165 are connected through a transmission belt. The wire-releasing mechanism also includes two support plates connected to the extension plate 17 and close to the through hole, and a guide wheel 166 rotatably connected to the two support plates, and the resistance wire is led into the through hole 18 through the guide wheel 166. The resistance wire is wound on the retractable wheel 162, and the fourth motor 163 is controlled to work. The cooperation of the driving wheel 164, the driven wheel 165 and the transmission belt drives the retractable wheel 162 to rotate, thereby releasing the resistance wire. The guide wheel 166 guides the resistance wire to the through hole 18 and transports it vertically downward from the through hole 18.

[0051] like Figure 4 As shown, the welding mechanism 19 includes a first cylinder 191 and a second cylinder 192 hinged to the bottom surface of the extension plate, and a welding gun 193 connected to the telescopic end of the first cylinder, and the telescopic end of the second cylinder 192 is movably connected to the cylinder barrel of the first cylinder 191. When the positioning mechanism 14 is rotated to the bottom of the extension plate 17, the resistance wire is grasped downward by the second clamping mechanism 24, so that the lower end of the resistance wire contacts the light bulb, and at the same time, the first motor 142 is driven to rotate the light bulb to adjust the welding position of the light bulb, and then the first cylinder 191 is operated to adjust the distance reached by the welding gun 193, and the second cylinder 192 is operated to adjust the angle of the welding gun 193, so that the resistance wire is welded to the light bulb.

[0052] like Figure 5As shown, the first clamping mechanism 21 includes a third cylinder 211 connected to the upper part of the U-shaped seat, and a first finger cylinder 212 connected to the telescopic end of the third cylinder. The first finger cylinder 212 has two first clamping claws, and the opposite surfaces of the two first clamping claws are connected to the first clamping rod 213, and the opposite surfaces of the two first clamping rods 213 are connected to the first elastic rubber block 214. The third cylinder 211 is controlled to extend, so that the first finger cylinder 212 moves toward the resistance wire, and then the first finger cylinder 212 works to make the two first clamping claws move relative to each other, and the resistance wire is clamped by the two first clamping rods 213. The first rubber block 214 is elastic and anti-slip, which can better clamp the resistance wire and prevent the resistance wire from rebounding after being cut.

[0053] like Figure 4 As shown, the lifting mechanism 22 includes a screw rod 221 rotatably connected to the U-shaped seat, a guide rod 222 connected to the U-shaped seat, a fifth motor 223 installed below the U-shaped seat and connected to the screw rod, the lifting seat 23 is threadedly connected to the screw rod 221, and the lifting seat 23 is slidably connected to the guide rod 222. When the fifth motor 223 is started, the screw rod 221 is driven to rotate, and the lifting seat 23 is driven to rise and fall along the guide rod 222 during the rotation of the screw rod 221.

[0054] like Figure 7 As shown, the second clamping mechanism 24 includes a fourth cylinder 241 connected to the lifting seat, a second finger cylinder 242 connected to the telescopic end of the fourth cylinder, the second finger cylinder 242 has two second clamping claws, the opposite surfaces of the two second clamping claws are connected to the second clamping rod 243, and the opposite surfaces of the two second clamping rods 243 are connected to the second elastic rubber block 244. The fourth cylinder 241 is controlled to extend, so that the second finger cylinder 242 moves toward the resistance wire, and then the second finger cylinder 242 works to make the two second clamping claws move relative to each other, and the resistance wire is clamped by the two second clamping rods 243. The second rubber block 244 is elastic and anti-slip, and can better clamp the resistance wire. Then the lifting seat 23 is driven to descend, and the resistance wire can be pulled downward to make the resistance wire contact with the light bulb.

[0055] In this embodiment, the first finger cylinder 212 and the second finger cylinder 242 both use finger cylinders, also known as pneumatic fingers, pneumatic grippers or pneumatic grippers, which are actuators that use compressed air as power to clamp or grab workpieces. They are divided into parallel grippers, swing grippers, rotating grippers and three-point clamps. The finger cylinders described in this embodiment are parallel grippers, and the grippers are actuated by two pistons. Each piston is connected to the pneumatic finger by a roller and a double crank to form a special drive unit, which moves axially and concentrically, and each gripper cannot move alone. Both the first finger cylinder and the second finger cylinder can be purchased on the market, and both are prior art, so they will not be described in detail in this embodiment.

[0056] like Figure 6 As shown, the cutting mechanism 25 includes a fifth cylinder 251 installed on the lifting seat and a pneumatic scissors 252 connected to the telescopic end of the fifth cylinder. After the resistance wire is welded to the light bulb, the fifth cylinder 251 is controlled to extend, driving the pneumatic scissors 252 to move in the direction of the resistance wire, clamping the resistance wire through the first clamping mechanism 21, and releasing the second clamping mechanism 24, and then cutting the resistance wire through the pneumatic scissors 252 to complete the welding of the resistance wire and the light bulb.

[0057] The pneumatic scissors described in this embodiment are a shearing tool powered by compressed air. When compressed air enters the cylinder of the pneumatic scissors through the air inlet, it pushes the piston forward. The piston drives the blade to perform shearing action through the connecting parts. When the air supply is stopped, the blade returns to the initial position under the action of a spring or other reset device, waiting for the next shearing operation. The pneumatic scissors described can be purchased on the market and are prior art, so they will not be described in detail in this embodiment.

[0058] The working principle of this embodiment is:

[0059] The turntable 13 is controlled to rotate by the driving mechanism 12, so that the positioning mechanism 14 reaches the bottom of the extension plate 17 one by one, and the resistance wire 27 is released by the wire release mechanism 16. The resistance wire is clamped by the second clamping mechanism 24 and pulled downward to make it contact with the light bulb, and then the resistance wire is welded to the light bulb by the welding mechanism 19. After welding, the resistance wire is clamped by the first clamping mechanism 21, and the resistance wire is cut by the cutting mechanism 25, so that the resistance wire is welded to the light bulb, and then the turntable 13 is controlled to continue to rotate. When the turntable 13 leaves the welding group 4, the second motor 147 rotates in the opposite direction, driving the two rotating shafts 145 to rotate in the opposite direction, so that the two clamping plates 146 are separated, and then the welded neon lamp is manually taken out from the receiving column 143. At this time, another positioning mechanism 14 carries the light bulb to the bottom of the welding mechanism 19 to perform the next round of welding.

[0060] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A neon lamp production wire repairing machine capable of automatically screening defective products, characterized in that: It comprises a screening group (1), a transfer group (2), a positioning group (3) and a welding group (4) which are arranged in sequence; The screening group (1) comprises a vibrating plate (5), an electromagnet (6) arranged at the bottom of the vibrating plate, and a conveying channel (7) connected to one side of the vibrating plate and inclined downward, wherein the conveying channel (7) is connected to the vibrating plate (5); The transfer group (2) comprises a material storage tray (8) and a feeding hopper (9) connected to one side of the material storage tray, the inner diameter of the lower part of the feeding hopper (9) is equal to the diameter of the neon lamp, and the material storage tray (8) is located below the conveying channel (7); The positioning group (3) comprises a base (10), a rotating column (11) rotatably connected to the base, a driving mechanism (12) arranged in the base and used to drive the rotating column (11) to rotate, a rotating disk (13) connected to the upper end of the rotating column, and a positioning mechanism (14) installed on the periphery of the rotating disk (13), and the neon lamp dropped from the feeding hopper (9) is received and positioned by the positioning mechanism (14); The welding group (4) comprises a machine base (15), a wire releasing mechanism (16) installed on the machine base and used for releasing the resistance wire, and an extension plate (17) connected to the machine base and extending above the turntable, wherein a through hole (18) is provided on the extension plate (17), the through hole (18) is located directly above the positioning mechanism (14), and the resistance wire passes through the through hole (18); the welding group (4) further comprises a welding mechanism (19) installed on the bottom surface of the extension plate, a U-shaped seat (20) connected to the side of the machine base facing the turntable, a first clamping mechanism (21) installed on the upper part of the U-shaped seat, a lifting mechanism (22) installed on the U-shaped seat, a lifting seat (23) transmission-connected to the lifting mechanism, a second clamping mechanism (24) and a cutting mechanism (25) installed on the lifting seat, wherein the first clamping mechanism (21), the second clamping mechanism (24) and the cutting mechanism (25) are arranged in sequence from top to bottom; the welding mechanism (19) and the U-shaped seat (20) are arranged opposite to each other.

2. A neon lamp production wire repairing machine capable of automatically screening defective products according to claim 1, characterized in that: The driving mechanism (12) comprises a first motor (121) installed in a base, a first transmission shaft connected to the first motor via a coupling, a main gear (122) connected to the first transmission shaft, and a sub-gear (123) connected to a rotating column, wherein the main gear (122) meshes with the sub-gear (123).

3. A neon lamp production wire repairing machine capable of automatically screening defective products according to claim 2, characterized in that: The positioning mechanism (14) comprises a positioning plate (141), a second motor (142) is installed at the center of the top surface of the positioning plate (141), a rotating rod is connected to the second motor (142) through a coupling, a material receiving column (143) is connected to the rotating rod, a material receiving groove is provided on the top of the material receiving column (143), sleeves (144) are connected to the two sides of the positioning plate (141) located on the second motor, a rotating shaft (145) is rotatably connected in the sleeve (144), the upper ends of the two rotating shafts (145) are connected to matching clamping plates (146), the opposite surfaces of the two clamping plates (146) are provided with arc-shaped clamping grooves, and the two clamping grooves form a circle when closed, and the circle is aligned with the material receiving column (143) and the feeding hopper (9). The bottom surface of the positioning plate (141) is connected with a connecting column, a third motor (147) is installed on the connecting column, the third motor (147) is connected with a second transmission shaft through a coupling, the second transmission shaft is connected with a first gear (148), the two rotating shafts (145) pass through the positioning plate (141), and the passing ends are connected with second gears (149), the first gear (148) is meshed with the second gears (149) on both sides thereof; the positioning plate (141) is fixed to the turntable (13) by bolts, the periphery of the positioning plate (141) is provided with a through mounting hole, the connecting column is inserted into the mounting hole, the first gear (148) and the second gear (149) are both located below the turntable (13).

4. A neon lamp production wire repairing machine capable of automatically screening defective products according to claim 3, characterized in that: The wire-releasing mechanism (16) comprises two bearing seats (161) connected to the top surface of the machine base, a retracting shaft rotatably connected to the two bearing seats, and a retracting wheel (162) connected to the retracting shaft, wherein a resistance wire is wound on the retracting wheel (162). The wire-releasing mechanism (16) also comprises a fourth motor (163) installed on one side of the machine base, a third transmission shaft connected to the fourth motor through a coupling, a driving wheel (164) connected to the third transmission shaft, and a driven wheel (165) connected to one end of the retracting shaft, wherein the driving wheel (164) and the driven wheel (165) are connected to each other through a transmission belt. The wire-releasing mechanism also comprises two support plates connected to the extension plate (17) and close to the through hole, and a guide wheel (166) rotatably connected to the two support plates, wherein the resistance wire is led into the through hole (18) through the guide wheel (166).

5. A neon lamp production wire repairing machine capable of automatically screening defective products according to claim 4, characterized in that: The welding mechanism (19) comprises a first cylinder (191) and a second cylinder (192) hinged to the bottom surface of the extension plate, and a welding gun (193) connected to the telescopic end of the first cylinder, and the telescopic end of the second cylinder (192) is movably connected to the cylinder barrel of the first cylinder (191).

6. A neon lamp production wire repairing machine capable of automatically screening defective products according to claim 5, characterized in that: The first clamping mechanism (21) comprises a third cylinder (211) connected to the upper part of the U-shaped seat, and a first finger cylinder (212) connected to the telescopic end of the third cylinder, the first finger cylinder (212) having two first clamping claws, the opposite surfaces of the two first clamping claws being connected to a first clamping rod (213), and the opposite surfaces of the two first clamping rods (213) being connected to an elastic first rubber block (214).

7. A neon lamp production wire repairing machine capable of automatically screening defective products according to claim 6, characterized in that: The lifting mechanism (22) comprises a screw rod (221) rotatably connected to the U-shaped seat, a guide rod (222) connected to the U-shaped seat, and a fifth motor (223) installed below the U-shaped seat and transmission-connected to the screw rod; the lifting seat (23) is threadedly connected to the screw rod (221), and the lifting seat (23) is slidably connected to the guide rod (222).

8. A neon lamp production wire repairing machine capable of automatically screening defective products according to claim 7, characterized in that: The second clamping mechanism (24) comprises a fourth cylinder (241) connected to the lifting seat, and a second finger cylinder (242) connected to the telescopic end of the fourth cylinder, the second finger cylinder (242) having two second clamping claws, the opposite surfaces of the two second clamping claws being connected to a second clamping rod (243), and the opposite surfaces of the two second clamping rods (243) being connected to an elastic second rubber block (244).

9. A neon lamp production wire repairing machine capable of automatically screening defective products according to claim 8, characterized in that: The cutting mechanism (25) comprises a fifth cylinder (251) mounted on a lifting seat and a pneumatic scissors (252) connected to the telescopic end of the fifth cylinder.

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