Capacitor pin welding device

Abstract

The present invention discloses a capacitor pin welding device, which belongs to the technical field of capacitor welding, and includes a main frame device, the main frame device is used to drive the circuit board to move and weld the capacitor on the circuit board, the main frame device is provided with a placing device, the placing device is used to place the capacitor on the position to be welded on the circuit board, and a feeding device is provided next to the main frame device, the feeding device is used to retest and feed the capacitor pins. The main frame device provided by the present invention intermittently conveys the circuit board through a conveyor belt, and during conveying, tinning and welding, the circuit board is pressed by a pressing belt to complete the positioning of the circuit board and improve the welding accuracy; the tin brushing mechanism provided by the present invention automatically brushes tin on the part where the circuit board is connected to the capacitor pin to be welded, and solders the circuit board and the capacitor pin through a heating furnace, with a high degree of automation, and at the same time, the solder paste pool gradually increases as the solder paste decreases, ensuring that the solder paste brush can always brush the solder paste.

Description

Technical Field

[0001] The invention relates to the technical field of capacitor welding, and in particular to a capacitor pin welding device. Background Art

[0002] Capacitor is a common electronic component used to store charge and electrical energy. It can store and release charge cyclically. Through different connections, it can achieve filtering, coupling, energy storage, delay and other functions.

[0003] The connection between the capacitor and the circuit board is usually made by soldering between the capacitor pins and the circuit board. Since the capacitor is a small electronic component, its welding requires high manual proficiency, and the number of capacitors in complex circuits is relatively large. Manual operation is not only complicated but also has a high error rate. At this time, mechanical auxiliary welding is required to ensure the correct position and welding effect. The capacitor pin welding in the prior art mainly uses a welding table for welding, but the circuit board and capacitor need to be manually assembled and positioned before welding, and the welding process is mainly completed manually, with a low degree of automation and poor welding accuracy. Summary of the invention

[0004] In view of the above technical problems, the technical solution adopted by the present invention is: a capacitor pin welding device, including a main frame device, the main frame device includes a main frame, the main frame device is used to drive the circuit board to move and weld the capacitor on the circuit board, the main frame device is provided with a placing device, the placing device includes a discharge box, the discharge box is fixedly installed on the main frame, the placing device is used to place the capacitor on the circuit board to be welded position, the main frame device is provided with a feeding device, the feeding device includes a feeding frame, and the feeding device is used to retest and feed the pins of the capacitor.

[0005] Furthermore, the main frame device includes a transmission wheel and a pressure wheel rotatably mounted on the main frame, a conveyor belt is wrapped around the transmission wheel, a pressure belt is wrapped around the pressure wheel, the circuit board is placed on the conveyor belt, a main motor is fixedly mounted on the main frame, a half-tooth gear is fixedly mounted on the motor shaft of the main motor, a gear shaft and a rotating column are rotatably mounted on the main frame, a heating furnace is arranged under the main frame, an upper gear, a transmission gear and a docking gear are fixedly mounted on the gear shaft, the docking gear is meshed with the half-tooth gear, and a tin brushing mechanism is arranged on the rotating column.

[0006] Furthermore, the tin brushing mechanism includes a solder paste brush and a lower gear fixedly mounted on a rotating column, the lower gear meshing with the upper gear, a limiting pool being arranged below the solder paste brush, a solder paste pool being slidably mounted in the limiting pool, an inner spring being arranged between the solder paste pool and the limiting pool, the solder paste pool being filled with solder paste, and the transmission gear cooperating with the conveyor belt.

[0007] Place the circuit board on the conveyor belt. The main motor rotates to drive the half-tooth gear to rotate, thereby driving the docking gear to rotate intermittently. The circuit board is pressed by the clamping belt, thereby driving the gear shaft, transmission gear and upper gear to rotate intermittently. The transmission gear drives the conveyor belt to move intermittently, thereby driving the circuit board to move forward intermittently. The upper gear drives the lower gear and solder paste brush to rotate. The solder paste brush brushes the solder paste in the solder paste pool into the holes of the capacitor to be soldered on the circuit board.

[0008] When the capacitor falls into the hole of the circuit board, and the conveyor belt drives the circuit board to the heating furnace, the conveyor belt moves intermittently, and the solder paste between the circuit board and the capacitor is heated by the heating furnace to complete the welding of the circuit board and the capacitor.

[0009] As the solder paste in the solder paste pool decreases, the weight of the solder paste pool will decrease, and the internal spring will drive the solder paste pool to rise along the limit pool, so that the solder paste brush can always brush the solder paste in the solder paste pool. When the solder paste in the solder paste pool is insufficient, the solder paste needs to be replenished.

[0010] Furthermore, the placement device includes a motor frame and a flip plate fixedly mounted on the main frame, a rotating motor is fixedly mounted on the motor frame, a rotating frame is fixedly mounted on the motor shaft of the rotating motor, and a plurality of ejection mechanisms are arranged on the rotating frame.

[0011] Furthermore, the ejection mechanism includes a rotating frame fixedly mounted on the rotating frame, a rotating plate rotatably mounted on the rotating frame, an ejection block and a lower pressure block slidably mounted on the rotating frame, a rotating rod rotatably mounted on the rotating frame, the ejection block is rotatably mounted on the slot hole of the rotating rod, and the lower pressure block is rotatably mounted on the slot hole of the rotating rod.

[0012] The capacitor to be welded falls onto the rotating plate. In the initial state, under the weight of the rotating plate, the upper surface of the ejector block is flush with the upper surface of the rotating frame. The rotating motor rotates to drive the rotating frame to rotate. When the lower pressing block contacts the flip piece, the lower pressing block is pressed down under the action of the flip piece, thereby driving the rotating rod to rotate, thereby driving the ejector block to rise and lift the rotating plate. The rotating plate rotates relative to the rotating frame, and the capacitor on the rotating plate falls into the hole to be welded on the circuit board. Since the circuit board is pre-brushed with solder paste, the space between the capacitor and the circuit board is filled with solder paste.

[0013] When the capacitor is poured out, the lower pressing block leaves the bottom of the flip plate, and the main motor presses the ejection block down under the action of gravity, and the lower pressing block extends again.

[0014] Furthermore, the feeding device includes a feeding box fixedly mounted on the feeding rack, a turntable rotatably mounted on the feeding rack, a feeding motor fixedly mounted on the feeding rack, a motor gear fixedly mounted on the motor shaft of the feeding motor, a turntable gear fixedly mounted on the turntable, a conveyor belt wrapped around the turntable gear and the motor gear, two transmission wheels rotatably mounted on the feeding rack, a transmission motor fixedly mounted on the feeding rack, the motor shaft of the transmission motor fixedly mounted on the transmission wheel, a transmission belt wrapped around the transmission wheel, and a pushing rack mechanism is provided on the feeding rack.

[0015] Furthermore, the pushing rack mechanism includes a short connecting rod fixedly mounted on the turntable gear, a pushing connecting rod rotatably mounted on the short connecting rod, a pushing rack rotatably mounted on the pushing connecting rod, the pushing rack and the feeding rack are slidably mounted, a pushing rack rack is fixedly mounted on the pushing rack, a sliding groove is fixedly mounted on the feeding rack, a pushing block is slidably mounted in the sliding groove, a transverse rack is fixedly mounted on the pushing block, a rotating gear is rotatably mounted on the feeding rack, the pushing rack rack is meshed with the rotating gear, the rotating gear is meshed with the transverse rack, and a pushing mechanism is provided on the pushing rack.

[0016] Furthermore, the pushing mechanism includes a discharging top block, a detection top block and a blocking top block fixedly installed on the pushing frame, and the sliding groove is slidably installed with a blocking plate, a discharging slope block and a detection head. The blocking plate is used to block the capacitor, and the detection head is used to detect the pins of the capacitor. The detection top block cooperates with the detection head, the discharging top block cooperates with the discharging slope block, and the blocking top block cooperates with the blocking plate.

[0017] Put the capacitor into the feed box, the feed motor rotates to drive the motor gear to rotate, thereby driving the turntable gear to rotate through the transmission belt, driving the turntable to rotate, and thus transporting the capacitor to the transmission belt through the turntable. The transmission motor rotates to drive the transmission wheel to rotate, thereby transporting the capacitor to the front of the push block through the transmission belt. The rotation of the turntable gear will also drive the short connecting rod to rotate, thereby driving the pushing connecting rod to rotate, thereby driving the push rack to slide along the feed rack, thereby driving the push rack rack to slide, thereby driving the rotating gear to rotate, driving the transverse rack and the push block to slide, and thus pushing the capacitor in the sliding groove through the push block.

[0018] In the initial state, the blocking plate is in an extended state, and the capacitor pushed out by the pushing block is blocked by the blocking plate. At this time, the detection head is located under the capacitor, and the pins of the capacitor are re-inspected by the detection head. If the detection fails, an alarm is issued and the operation is stopped. At the same time, the sliding of the push frame toward the sliding groove will drive the discharging top block to slide toward the discharging slope block, and the sliding of the push frame toward the sliding groove will also drive the detection top block and the blocking top block to slide. When the detection top block and the blocking top block slide, the blocking plate and the detection head leave the top of the detection top block and the blocking top block, the detection head and the blocking plate will fall down, and the blocking plate no longer blocks the front of the capacitor. The discharging top block drives the discharging slope block to rise, and pushes the capacitor forward through the slope surface of the discharging slope block to leave the sliding groove and fall onto the rotating plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects: (1) The main frame device provided in the present invention intermittently transports the circuit board through a conveyor belt, and during transportation, tinning and welding, the circuit board is pressed by a clamping belt to complete the positioning of the circuit board and improve the welding accuracy; (2) Before welding the capacitor to be welded, the feeding device provided in the present invention first rechecks the capacitor pins to prevent the faulty capacitor from being welded to the circuit board, and at the same time ensures the alignment accuracy of the capacitor and the circuit board through the feeding device and placement; (3) The tin brushing mechanism provided in the present invention automatically brushes tin on the connection between the circuit board and the capacitor pins to be welded, and solders the circuit board and the capacitor pins through a heating furnace, with a high degree of automation. At the same time, the solder paste pool gradually increases as the solder paste decreases, ensuring that the solder paste brush can always brush the solder paste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 The main frame device structure of the present invention is shown in FIG. Figure 1 .

[0022] Figure 3 The main frame device structure of the present invention is shown in FIG. Figure 2 .

[0023] Figure 4 It is a schematic diagram of the structure of the tin brushing mechanism of the present invention.

[0024] Figure 5 The structure of the placement device of the present invention is shown in FIG. Figure 1 .

[0025] Figure 6 The structure of the placement device of the present invention is shown in FIG. Figure 2 .

[0026] Figure 7 It is a schematic diagram of the ejection mechanism structure of the present invention.

[0027] Figure 8 The structure of the feeding device of the present invention is shown in FIG. Figure 1 .

[0028] Fig. 9 The structure of the feeding device of the present invention is shown in FIG. Figure 2 .

[0029] Fig.10 The structure of the feeding device of the present invention is shown in FIG. Figure 3 .

[0030] Fig.11 It is a schematic diagram of the structure of the driving mechanism of the present invention.

[0031] Fig.12The structure of the feeding device of the present invention is shown in FIG. Figure 4 .

[0032] Figure numbers: 101-main frame; 102-transmission wheel; 103-conveyor belt; 104-pressure wheel; 105-pressure belt; 106-circuit board; 107-main motor; 108-heating furnace; 109-half-tooth gear; 110-gear shaft; 111-docking gear; 112-transmission gear; 113-rotating column; 114-upper gear; 115-solder paste brush; 116-lower gear; 117-solder paste pool; 118-inner spring; 119-limiting pool; 201-discharging box; 202-motor frame; 203-rotating motor; 204-turning sheet; 205-rotating frame; 206-rotating frame; 207-rotating plate; 208-lower pressing block; 209- ejector block; 210- rotating rod; 301- feed rack; 302- feed box; 303- turntable; 304- feed motor; 305- motor gear; 306- conveyor belt; 307- turntable gear; 308- short connecting rod; 309- push connecting rod; 310- push rack; 311- push rack rack; 312- rotating gear; 313- transverse rack; 314- push block; 315- sliding groove; 316- transmission motor; 317- transmission wheel; 318- transmission belt; 319- discharge ejector block; 320- detection ejector block; 321- blocking ejector block; 322- blocking plate; 323- discharge slope block; 324- detection head; 325- capacitor. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0034] Example: Reference Figure 1-Figure 12 A capacitor pin welding device includes a main frame device, the main frame device includes a main frame 101, the main frame device is used to drive the circuit board to move and weld the capacitor on the circuit board, the main frame device is provided with a placing device, the placing device includes a discharge box 201, the discharge box 201 is fixedly installed on the main frame 101, the placing device is used to place the capacitor on the circuit board to be welded position, a feeding device is provided next to the main frame device, the feeding device includes a feeding frame 301, the feeding device is used to retest and feed the capacitor pins.

[0035] like Figure 1-Figure 4As shown, the main frame device includes a transmission wheel 102 and a pressure wheel 104 rotatably mounted on the main frame 101, a conveyor belt 103 is wrapped around the transmission wheel 102, a pressure belt 105 is wrapped around the pressure wheel 104, a circuit board 106 is placed on the conveyor belt 103, a main motor 107 is fixedly mounted on the main frame 101, a half-tooth gear 109 is fixedly mounted on the motor shaft of the main motor 107, a gear shaft 110 and a rotating column 113 are rotatably mounted on the main frame 101, a heating furnace 108 is arranged below the main frame 101, an upper gear 114, a transmission gear 112 and a docking gear 111 are fixedly mounted on the gear shaft 110, the docking gear 111 is meshed with the half-tooth gear 109, and a tin brushing mechanism is arranged on the rotating column 113.

[0036] like Figure 2-Figure 4 As shown, the tin brushing mechanism includes a solder paste brush 115 and a lower gear 116 fixedly mounted on a rotating column 113. The lower gear 116 is meshed with the upper gear 114. A limiting pool 119 is arranged below the solder paste brush 115. A solder paste pool 117 is slidably installed in the limiting pool 119. An inner spring 118 is arranged between the solder paste pool 117 and the limiting pool 119. The solder paste pool 117 is filled with solder paste. The transmission gear 112 cooperates with the conveyor belt 103.

[0037] The circuit board 106 is placed on the conveyor belt 103. The main motor 107 rotates to drive the half-tooth gear 109 to rotate, thereby driving the docking gear 111 to rotate intermittently, thereby driving the gear shaft 110, the transmission gear 112 and the upper gear 114 to rotate intermittently. The transmission gear 112 drives the conveyor belt 103 to move intermittently, thereby driving the circuit board 106 to move forward intermittently. The upper gear 114 drives the lower gear 116 and the solder paste brush 115 to rotate. The solder paste brush 115 brushes the solder paste in the solder paste pool 117 into the holes of the capacitor to be soldered on the circuit board 106.

[0038] When the capacitor 325 falls into the hole of the circuit board 106, and when the conveyor belt 103 drives the circuit board 106 to the heating furnace 108, since the conveyor belt 103 moves intermittently, the solder paste between the circuit board 106 and the capacitor 325 is heated by the heating furnace 108, completing the welding of the circuit board 106 and the capacitor 325.

[0039] As the solder paste in the solder paste pool 117 decreases, the weight of the solder paste pool 117 will decrease, and the inner spring 118 will drive the solder paste pool 117 to rise along the limiting pool 119, so that the solder paste brush 115 can always brush the solder paste in the solder paste pool 117. When the solder paste in the solder paste pool 117 is insufficient, the solder paste needs to be replenished.

[0040] like Figure 5-Figure 7As shown, the placement device includes a motor frame 202 and a flip plate 204 fixedly mounted on the main frame 101, a rotating motor 203 is fixedly mounted on the motor frame 202, a rotating frame 205 is fixedly mounted on the motor shaft of the rotating motor 203, and a plurality of ejection mechanisms are arranged on the rotating frame 205.

[0041] like Figure 5-Figure 7 As shown, the ejection mechanism includes a rotating frame 206 fixedly mounted on the rotating frame 205, a rotating plate 207 is rotatably mounted on the rotating frame 206, an ejection block 209 and a lower pressure block 208 are slidably mounted on the rotating frame 206, a rotating rod 210 is rotatably mounted on the rotating frame 206, the ejection block 209 is rotatably mounted with the slot hole of the rotating rod 210, and the lower pressure block 208 is rotatably mounted with the slot hole of the rotating rod 210.

[0042] The capacitor 325 to be welded falls onto the rotating plate 207. In the initial state, under the weight of the rotating plate 207, the upper surface of the ejector block 209 is flush with the upper surface of the rotating frame 206. The rotating motor 203 rotates to drive the rotating frame 205 to rotate. When the lower pressing block 208 contacts the flip sheet 204, under the action of the flip sheet 204, the lower pressing block 208 is pressed down, thereby driving the rotating rod 210 to rotate, thereby driving the ejector block 209 to rise and lift the rotating plate 207. The rotating plate 207 rotates relative to the rotating frame 206, and the capacitor 325 on the rotating plate 207 falls into the hole to be welded on the circuit board 106. Since the circuit board 106 is pre-brushed with solder paste, the space between the capacitor 325 and the circuit board 106 is filled with solder paste.

[0043] After the capacitor 325 is poured out, the lower pressing block 208 leaves the bottom of the flip plate 204, and the main motor 107 presses down the ejection block 209 under the action of gravity, and the lower pressing block 208 extends again.

[0044] like Figure 8-Figure 12 As shown, the feeding device includes a feeding box 302 fixedly mounted on a feeding rack 301, a turntable 303 is rotatably mounted on the feeding rack 301, a feeding motor 304 is fixedly mounted on the feeding rack 301, a motor gear 305 is fixedly mounted on the motor shaft of the feeding motor 304, a turntable gear 307 is fixedly mounted on the turntable 303, a conveyor belt 306 is wound around the turntable gear 307 and the motor gear 305, two transmission wheels 317 are rotatably mounted on the feeding rack 301, a transmission motor 316 is fixedly mounted on the feeding rack 301, the motor shaft of the transmission motor 316 is fixedly mounted on the transmission wheel 317, a transmission belt 318 is wound around the transmission wheel 317, and a pushing rack mechanism is provided on the feeding rack 301.

[0045] like Figure 8-Figure 12As shown, the pushing frame mechanism includes a short connecting rod 308 fixedly mounted on the turntable gear 307, a pushing connecting rod 309 is rotatably mounted on the short connecting rod 308, a pushing frame 310 is rotatably mounted on the pushing connecting rod 309, the pushing frame 310 is slidably mounted with the feeding frame 301, a pushing frame rack 311 is fixedly mounted on the pushing frame 310, a sliding groove 315 is fixedly mounted on the feeding frame 301, a pushing block 314 is slidably mounted in the sliding groove 315, a transverse rack 313 is fixedly mounted on the pushing block 314, a rotating gear 312 is rotatably mounted on the feeding frame 301, the pushing frame rack 311 is meshed with the rotating gear 312, the rotating gear 312 is meshed with the transverse rack 313, and a pushing mechanism is provided on the pushing frame 310.

[0046] like Figure 8-Figure 12 As shown, the pushing mechanism includes a discharging top block 319, a detection top block 320 and a blocking top block 321 fixedly mounted on the pushing frame 310, and the sliding groove 315 is slidably mounted with a blocking plate 322, a discharging slope block 323 and a detection head 324, the blocking plate 322 is used to block the capacitor 325, the detection head 324 is used to detect the pins of the capacitor 325, the detection top block 320 cooperates with the detection head 324, the discharging top block 319 cooperates with the discharging slope block 323, and the blocking top block 321 cooperates with the blocking plate 322.

[0047] The capacitor 325 is put in from the feed box 302, and the feed motor 304 rotates to drive the motor gear 305 to rotate, thereby driving the turntable gear 307 to rotate through the conveyor belt 306, driving the turntable 303 to rotate, and thus the capacitor 325 is transported to the conveyor belt 318 through the turntable 303. The transmission motor 316 rotates to drive the transmission wheel 317 to rotate, thereby transporting the capacitor 325 to the front of the push block 314 through the conveyor belt 318. The rotation of the turntable gear 307 also drives the short connecting rod 308 to rotate, thereby driving the pushing connecting rod 309 to rotate, thereby driving the push frame 310 to slide along the feed frame 301, thereby driving the push frame rack 311 to slide, thereby driving the rotating gear 312 to rotate, driving the transverse rack 313 and the push block 314 to slide, thereby pushing the capacitor 325 in the sliding groove 315 through the push block 314.

[0048] In the initial state, the blocking plate 322 is in the extended state, and the capacitor 325 pushed out by the pushing block 314 is blocked by the blocking plate 322. At this time, the detection head 324 is located below the capacitor 325, and the pins of the capacitor 325 are re-checked by the detection head 324. If the detection fails, an alarm is issued and the operation is stopped. At the same time, the push frame 310 slides toward the sliding groove 315, which will drive the discharge top block 319 to slide toward the discharge slope block 323. The push frame 310 slides toward the sliding groove 315 and also drives the detection top block 319 to slide toward the discharge slope block 323. 20 and the blocking top block 321 slide. When the detecting top block 320 and the blocking top block 321 slide, after the blocking plate 322 and the detecting head 324 leave the top of the detecting top block 320 and the blocking top block 321, the detecting head 324 and the blocking plate 322 will fall down, and the blocking plate 322 no longer blocks the front of the capacitor 325. The discharging top block 319 drives the discharging slope block 323 to rise, and pushes the capacitor 325 to slide forward through the slope surface of the discharging slope block 323, leaving the sliding groove 315 and falling onto the rotating plate 207.

[0049] The working principle of a capacitor pin welding device disclosed in the present invention is: a circuit board 106 is placed on a conveyor belt 103, a main motor 107 rotates to drive a half-tooth gear 109 to rotate, thereby driving a docking gear 111 to rotate intermittently, thereby driving a gear shaft 110, a transmission gear 112 and an upper gear 114 to rotate intermittently, the transmission gear 112 drives the conveyor belt 103 to move intermittently, thereby driving the circuit board 106 to move forward intermittently, the upper gear 114 drives the lower gear 116 and a solder paste brush 115 to rotate, and the solder paste brush 115 brushes the solder paste in a solder paste pool 117 out and brushes it into the hole of the capacitor to be welded on the circuit board 106. The capacitor 325 is put in from the feed box 302, and the feed motor 304 rotates to drive the motor gear 305 to rotate, thereby driving the turntable gear 307 to rotate through the conveyor belt 306, driving the turntable 303 to rotate, and thus the capacitor 325 is transported to the conveyor belt 318 through the turntable 303. The transmission motor 316 rotates to drive the transmission wheel 317 to rotate, thereby transporting the capacitor 325 to the front of the push block 314 through the conveyor belt 318. The rotation of the turntable gear 307 also drives the short connecting rod 308 to rotate, thereby driving the pushing connecting rod 309 to rotate, thereby driving the push frame 310 to slide along the feed frame 301, thereby driving the push frame rack 311 to slide, thereby driving the rotating gear 312 to rotate, driving the transverse rack 313 and the push block 314 to slide, thereby pushing the capacitor 325 in the sliding groove 315 through the push block 314. In the initial state, the blocking plate 322 is in the extended state, and the capacitor 325 pushed out by the pushing block 314 is blocked by the blocking plate 322. At this time, the detection head 324 is located below the capacitor 325, and the pins of the capacitor 325 are re-checked by the detection head 324. If the detection fails, an alarm is issued and the operation is stopped. At the same time, the push frame 310 slides toward the sliding groove 315, which will drive the discharge top block 319 to slide toward the discharge slope block 323. The push frame 310 slides toward the sliding groove 315 and also drives the detection top block 319 to slide toward the discharge slope block 323. 20 and the blocking top block 321 slide. When the detecting top block 320 and the blocking top block 321 slide, after the blocking plate 322 and the detecting head 324 leave the top of the detecting top block 320 and the blocking top block 321, the detecting head 324 and the blocking plate 322 will fall down, and the blocking plate 322 no longer blocks the front of the capacitor 325. The discharging top block 319 drives the discharging slope block 323 to rise, and pushes the capacitor 325 to slide forward through the slope surface of the discharging slope block 323, leaving the sliding groove 315 and falling onto the rotating plate 207.The capacitor 325 to be welded falls onto the rotating plate 207. In the initial state, under the weight of the rotating plate 207, the upper surface of the ejector block 209 is flush with the upper surface of the rotating frame 206. The rotating motor 203 rotates to drive the rotating frame 205 to rotate. When the lower pressing block 208 contacts the flip sheet 204, the lower pressing block 208 is pressed down under the action of the flip sheet 204, thereby driving the rotating rod 210 to rotate, thereby driving the ejector block 209 to rise and lift the rotating plate 207. The rotating plate 207 rotates relative to the rotating frame 206, and the capacitor 325 on the rotating plate 207 falls into the hole to be welded on the circuit board 106. Since the circuit board 106 is pre-brushed with solder paste, the space between the capacitor 325 and the circuit board 106 is filled with solder paste. When the capacitor 325 is poured out, the lower pressing block 208 leaves the bottom of the flip sheet 204, and the main motor 107 presses the ejector block 209 down under the action of gravity, and the lower pressing block 208 extends again. When the capacitor 325 falls into the hole of the circuit board 106, and when the conveyor belt 103 drives the circuit board 106 to the heating furnace 108, since the conveyor belt 103 moves intermittently, the solder paste between the circuit board 106 and the capacitor 325 is heated by the heating furnace 108, completing the welding of the circuit board 106 and the capacitor 325.

[0050] As the solder paste in the solder paste pool 117 decreases, the weight of the solder paste pool 117 will decrease, and the inner spring 118 will drive the solder paste pool 117 to rise along the limiting pool 119, so that the solder paste brush 115 can always brush the solder paste in the solder paste pool 117. When the solder paste in the solder paste pool 117 is insufficient, the solder paste needs to be replenished.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A capacitor pin welding device, comprising a main frame device, characterized in that: The main frame device comprises a main frame (101), the main frame device is used to drive the circuit board to move and weld the capacitor on the circuit board, the main frame device is provided with a placement device, the placement device comprises a discharge box (201), the discharge box (201) is fixedly mounted on the main frame (101), the placement device is used to place the capacitor at a position to be welded on the circuit board, a feeding device is provided next to the main frame device, the feeding device comprises a feeding frame (301), and the feeding device is used to retest the pins of the capacitor and feed the capacitor; The main frame device comprises a transmission wheel (102) and a pressure wheel (104) rotatably mounted on the main frame (101); a conveyor belt (103) is wound around the transmission wheel (102); a pressure belt (105) is wound around the pressure wheel (104); a circuit board (106) is placed on the conveyor belt (103); a main motor (107) is fixedly mounted on the main frame (101); a half-toothed gear (109) is fixedly mounted on the motor shaft of the main motor (107); a gear shaft (110) and a rotating column (113) are rotatably mounted on the main frame (101); a heating furnace (108) is arranged below the main frame (101); an upper gear (114), a transmission gear (112) and a docking gear (111) are fixedly mounted on the gear shaft (110); the docking gear (111) is meshed with the half-toothed gear (109); and a tin brushing mechanism is arranged on the rotating column (113); The tin brushing mechanism comprises a tin paste brush (115) and a lower gear (116) fixedly mounted on a rotating column (113); the lower gear (116) meshes with the upper gear (114); a limit pool (119) is arranged below the tin paste brush (115); a tin paste pool (117) is slidably mounted in the limit pool (119); an inner spring (118) is arranged between the tin paste pool (117) and the limit pool (119); the tin paste pool (117) is filled with tin paste; and the transmission gear (112) cooperates with the conveyor belt (103); The feeding device comprises a feeding box (302) fixedly mounted on a feeding frame (301); a turntable (303) rotatably mounted on the feeding frame (301); a feeding motor (304) fixedly mounted on the feeding frame (301); a motor gear (305) fixedly mounted on the motor shaft of the feeding motor (304); a turntable gear (307) fixedly mounted on the turntable (303); a conveyor belt (306) wound around the turntable gear (307) and the motor gear (305); two transmission wheels (317) rotatably mounted on the feeding frame (301); a transmission motor (316) fixedly mounted on the feeding frame (301); the motor shaft of the transmission motor (316) is fixedly mounted on the transmission wheel (317); a transmission belt (318) is wound around the transmission wheel (317); and a pushing frame mechanism is provided on the feeding frame (301); The push rack mechanism comprises a short connecting rod (308) fixedly mounted on the turntable gear (307), a pushing connecting rod (309) rotatably mounted on the short connecting rod (308), a pushing rack (310) rotatably mounted on the pushing connecting rod (309), the pushing rack (310) and the feeding rack (301) being slidably mounted, a pushing rack rack (311) being fixedly mounted on the pushing rack (310), a sliding groove (315) being fixedly mounted on the feeding rack (301), a pushing block (314) being slidably mounted in the sliding groove (315), a traverse rack (313) being fixedly mounted on the pushing block (314), a rotating gear (312) being rotatably mounted on the feeding rack (301), the pushing rack rack (311) being meshed with the rotating gear (312), the rotating gear (312) being meshed with the traverse rack (313), and a pushing mechanism being provided on the pushing rack (310); The pushing mechanism comprises a discharge top block (319), a detection top block (320) and a blocking top block (321) fixedly mounted on the pushing frame (310); a blocking plate (322), a discharge slope block (323) and a detection head (324) are slidably mounted on the sliding groove (315); the blocking plate (322) is used to block the capacitor (325); the detection head (324) is used to detect the pins of the capacitor (325); the detection top block (320) cooperates with the detection head (324); the discharge top block (319) cooperates with the discharge slope block (323); and the blocking top block (321) cooperates with the blocking plate (322).

2. A capacitor pin welding device according to claim 1, characterized in that: The placement device comprises a motor frame (202) and a flip plate (204) fixedly mounted on a main frame (101); a rotating motor (203) is fixedly mounted on the motor frame (202); a rotating frame (205) is fixedly mounted on the motor shaft of the rotating motor (203); and a plurality of ejection mechanisms are arranged on the rotating frame (205).

3. A capacitor pin welding device according to claim 2, characterized in that: The ejection mechanism comprises a rotating frame (206) fixedly mounted on a rotating frame (205), a rotating plate (207) rotatably mounted on the rotating frame (206), an ejection block (209) and a lower pressing block (208) slidably mounted on the rotating frame (206), a rotating rod (210) rotatably mounted on the rotating frame (206), the ejection block (209) and a slot hole of the rotating rod (210) are rotatably mounted, and the lower pressing block (208) and a slot hole of the rotating rod (210) are rotatably mounted.

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