CN115070151B - SMT reflow soldering machine for PCB circuit board soldering - Google Patents
SMT reflow soldering machine for PCB circuit board soldering Download PDFInfo
- Publication number
- CN115070151B CN115070151B CN202110277145.6A CN202110277145A CN115070151B CN 115070151 B CN115070151 B CN 115070151B CN 202110277145 A CN202110277145 A CN 202110277145A CN 115070151 B CN115070151 B CN 115070151B
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- Prior art keywords
- box
- sensor
- pcb circuit
- reflow soldering
- circuit board
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- 238000005476 soldering Methods 0.000 title claims abstract description 53
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/087—Soldering or brazing jigs, fixtures or clamping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/42—Printed circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses an SMT reflow soldering machine for welding PCB circuit boards, in particular to the technical field of reflow soldering machines, which comprises a machine body, wherein an air pump is arranged at the upper end of the machine body, a plurality of air injection devices which are distributed left and right are arranged at the top end of the interior of the machine body, a pair of driving wheels which are distributed left and right are rotationally connected at the bottom end of the interior of the machine body and positioned below the air injection devices, empty boxes are arranged at the front ends of the two driving wheels, a motor II is arranged at the front ends of the two empty boxes, driving plates and grooved wheels are respectively arranged at the upper side and the lower side of the interior of the two empty boxes, the sensor I is aligned with the sensor II to trigger the motor I to operate, the conveyor belts at the left side and the right side are driven in opposite directions under the operation of the motor I, and the PCB circuit boards gradually move downwards to the interior of a placing box along with the transmission of the conveyor belts, and the electromagnet enables clamping sheets to firmly clamp the PCB circuit boards, so that the current reflow soldering machine is inconvenient to clamp the PCB circuit boards, and the problem that the current reflow soldering machine is inconvenient to cause too much reflow soldering is solved.
Description
Technical Field
The invention relates to the technical field of reflow soldering machines, in particular to an SMT reflow soldering machine for soldering a PCB.
Background
Reflow soldering machines, also known as reflow soldering machines or "reflow ovens," are devices that provide a heated environment to melt solder paste and thereby reliably bond surface mount components and PCB pads together through a solder paste alloy. Reflow soldering is a soldering technique developed with the advent of miniaturized electronic products, and is mainly applied to soldering of various surface-mounted components. The solder paste is coated on the bonding pad of the circuit board in proper amount and proper form, then the SMT component is pasted on the corresponding position, the solder paste has certain viscosity to fix the SMT component, then the circuit board with the mounted component enters the reflow soldering equipment, a heating circuit is arranged in the equipment, air or nitrogen is heated to a high enough temperature and then blown to the circuit board with the mounted SMT component, and the solder on the two sides of the component is melted and then bonded with the main board. The method has the advantages that the temperature is easy to control, oxidation can be avoided in the welding process, and the manufacturing cost is easy to control.
In the current reflow soldering machine, the PCB circuit board is directly placed on the transmission belt and is inconvenient to stabilize in the reflow soldering process of the PCB circuit board, and the PCB circuit board can be deviated from the position by air or nitrogen sprayed by the air spraying device, so that the reflow soldering is inconvenient.
Disclosure of Invention
The invention aims to provide an SMT reflow soldering machine for soldering a PCB circuit board, which solves the problems that the existing reflow soldering machine is inconvenient to clamp and stabilize the PCB circuit board, so that the reflow soldering is inconvenient.
The technical scheme adopted for solving the technical problems is as follows: the SMT reflow soldering machine for welding the PCB comprises a machine body, wherein an air pump is arranged at the upper end of the machine body, a plurality of air injection devices which are arranged left and right are arranged at the top end inside the machine body, a pair of driving wheels which are distributed left and right are rotationally connected to the bottom end inside the machine body and positioned below the air injection devices, empty boxes are arranged at the front ends of the two driving wheels, a motor II is arranged at the front ends of the two empty boxes, driving plates and grooved wheels are respectively arranged at the upper side and the lower side inside the empty boxes, a driving shaft is fixed at the center of the driving plates, and a driven shaft is fixed at the center of the grooved wheels;
a transmission belt is connected between the two transmission wheels in a transmission way, a plurality of placing boxes are connected to the outer surfaces of the transmission belts through screws, a pair of clamping pieces which are distributed front and back are connected inside each placing box in a sliding way, connecting pieces are arranged at the front and back ends of each placing box, a pair of sliding rods which are distributed left and right are arranged at the front and back ends of each placing box in a penetrating way, springs are sleeved outside each sliding rod, electromagnets are arranged at the front and back ends of each placing box, and a first sensor is arranged at the left and right sides of the upper end of each placing box;
the left end of the machine body is connected with a feeding box through a screw, an opening is formed in the bottom end of the feeding box, two sensors are respectively arranged at the left side and the right side of the opening at the lower end of the feeding box, a pair of left-right distributed conveying belts are arranged in the feeding box, a plurality of uniformly distributed spacing pieces are fixed at the outer sides of the conveying belts, a pair of vertically distributed conveying rollers are connected with the inner sides of the conveying belts in a transmission manner, the front end and the rear end of each conveying roller penetrate through the front end and the rear end of the feeding box, and a pair of left-right distributed motors are arranged at the front end of each feeding box;
the left end of the machine body is provided with a PLC control box below the transmission belt, the bottom end inside the machine body is provided with a sliding frame below the transmission belt, the bottom end inside the machine body is provided with a collecting box in a clamping way below the sliding frame, the inner side of the sliding frame is connected with a pair of sliding blocks which are distributed left and right in a sliding way, the upper ends of the two sliding blocks are provided with a pair of sensors III which are arranged left and right, bolts are inserted into the upper ends of the sliding blocks and positioned at the left and right sides of the sensors III, and the upper ends and the lower ends of the bolts extend out of the upper ends and the lower ends of the sliding frames.
Specifically, the connecting pipe is installed to the air pump left end, the connecting pipe left end extends to the fuselage inside and passes through flange joint with the air jet equipment.
Specifically, the jet device comprises a heating wire and a nozzle.
Specifically, the spring is located between box and the connection piece, spring head and tail both ends respectively with connection piece and place box fixed connection, the slide bar is located between connection piece and the centre gripping piece, slide bar head and tail both ends respectively with connection piece and centre gripping piece fixed connection, slide bar and place box front and back both ends sliding connection.
Specifically, the connecting piece is made of a magnet, and the electromagnet is attracted with the connecting piece.
Specifically, the grooved pulley is connected with the driving plate through intermittent transmission, the rear end of the driven shaft penetrates through the rear end of the empty box and is rotationally connected with the rear end of the empty box, the front end of the driving shaft penetrates through the front end of the empty box and is rotationally connected with the front end of the empty box, the front end of the driving shaft is connected with the two power output ends of the motor, the rear end of the driven shaft penetrates through the rear end of the driving wheel and is fixedly connected with the rear end of the driving wheel, and the rear end of the driven shaft is rotationally fixedly connected with the inside of the machine body.
Specifically, the front end and the rear end of the conveying roller are rotationally connected with the front end and the rear end of the feeding box, the front end of the upper end of the conveying roller is connected with the corresponding power output end of the motor, the driving wheel at the left end extends out of the left end of the machine body, and the rotation directions of the two motors are opposite.
Specifically, the feeding box is located above the conveyor belts, the sensor is located above the sensor one, and the opening is located between the two conveyor belts.
Specifically, the first motor is connected with the first PLC control box through a wire, the first PLC control box is respectively connected with the first sensor, the second sensor and the first sensor in a communication mode, the first PLC control box is electrically connected with the electromagnet, the third sensor is aligned with the first sensor below one by one, and the second sensor 9 is aligned with the first sensor above one by one.
Compared with the prior art, the invention has the beneficial effects that: firstly, the PCB circuit board is arranged between two spacing pieces of the same horizontal line in the feeding box, the first sensor is aligned with the second sensor to trigger the first motor to operate, the conveyor belts on the left side and the right side are driven to drive in opposite directions under the operation of the first motor, the PCB circuit board gradually moves downwards to the inside of the placing box along with the transmission of the conveyor belts, the electromagnet enables the clamping piece to firmly clamp the PCB circuit board, the second motor drives the transmission belt to drive the placing box to move along with the transmission of the transmission belt, the air pump sprays air or nitrogen into the air injection device, so that the PCB circuit board in the placing box is subjected to reflow soldering, the PCB circuit board in the placing box enters the upper part of the sliding frame along with the transmission belt, and the second sensor is aligned with the third sensor, so that the PCB circuit board enters the inside of the collecting box from the placing box, on one hand, the reflow soldering quality of the PCB circuit board is improved along with the blowing of the air injection device on the surface of the transmission belt, and the reflow soldering efficiency of the PCB circuit board is improved on the other hand.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a top view of the internal structure of the case of the present invention;
FIG. 3 is a front view of the interior structure of the empty box of the present invention;
FIG. 4 is a schematic view of the external structure of the driving wheel of the present invention;
FIG. 5 is a schematic diagram showing the operation of the internal structure of the feeding box of the present invention;
FIG. 6 is a schematic view of the external structure of the slide frame according to the present invention;
FIG. 7 is a schematic view of the outer structure of the feeding cassette of the present invention;
FIG. 8 is a cross-sectional view of the internal structure of the feed cassette of the present invention;
FIG. 9 is an enlarged view of part of structure A of the present invention;
FIG. 10 is an enlarged view of a portion of structure B of the present invention;
fig. 11 is a partial enlarged view of the structure C of the present invention.
In the figure: 1-air pump, 2-fuselage, 3-connecting pipe, 4-feeding box, 5-empty box, 6-driving belt, 7-placing box, 8-sensor one, 9-sensor two, 10-conveying roller, 11-spacer, 12-conveying belt, 13-opening, 14-motor one, 15-motor two, 16-driving wheel, 17-connecting sheet, 18-electromagnet, 19-clamping sheet, 20-driving plate, 21-sheave, 22-driven shaft, 23-driving shaft, 24-sensor three, 25-slider, 26-bolt, 27-sliding frame, 28-jet device, 29-PLC control box, 30-collecting box, 31-spring, 32-sliding rod.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Referring to fig. 1-11, the present invention provides a technical solution: the SMT reflow soldering machine for welding the PCB comprises a machine body 2, wherein an air pump 1 is arranged at the upper end of the machine body 2, a plurality of air injection devices 28 which are distributed left and right are arranged at the top end inside the machine body 2, a pair of driving wheels 16 which are distributed left and right are rotatably connected at the bottom end inside the machine body 2 and below the air injection devices 28, empty boxes 5 are arranged at the front ends of the two driving wheels 16, a motor II 15 is arranged at the front ends of the two empty boxes 5, driving plates 20 and grooved wheels 21 are respectively arranged at the upper side and the lower side inside the two empty boxes 5, a driving shaft 23 is fixed at the center of the driving plates 20, and a driven shaft 22 is fixed at the center of the grooved wheels 21;
a driving belt 6 is connected between the two driving wheels 16 in a driving way, a plurality of placing boxes 7 are connected to the outer surface of the driving belt 6 through screws, a pair of clamping pieces 19 which are distributed front and back are connected inside each placing box 7 in a sliding way, connecting pieces 17 are arranged at the front end and the back end of each placing box 7, a pair of sliding rods 32 which are distributed left and right are inserted into the front end and the back end of each placing box 7, a spring 31 is sleeved outside each sliding rod 32, electromagnets 18 are arranged at the front end and the back end of each placing box 7, and a sensor 8 is arranged at the left side and the right side of the upper end of each placing box 7;
the left end of the machine body 2 is connected with a feeding box 4 through screws, an opening 13 is formed in the bottom end of the feeding box 4, two sensors 9 are respectively arranged at the left and right sides of the opening 13 at the lower end of the feeding box 4, a pair of left and right distributed conveying belts 12 are arranged in the feeding box 4, a plurality of uniformly distributed spacing pieces 11 are fixed at the outer sides of the two conveying belts 12, a pair of vertically distributed conveying rollers 10 are connected with the inner sides of the two conveying belts 12 in a transmission manner, the front end and the rear end of the conveying rollers 10 penetrate through the front end and the rear end of the feeding box 4, and a pair of left and right distributed motors 14 are arranged at the front end of the feeding box 4;
the left end of the machine body 2 is provided with a PLC control box 29 below the driving belt 6, the bottom end inside the machine body 2 is provided with a sliding frame 27 below the driving belt 6, the bottom end inside the machine body 2 is provided with a collecting box 30 in a clamping manner below the sliding frame 27, the inner sides of the sliding frames 27 are connected with a pair of sliding blocks 25 distributed left and right, the upper ends of the two sliding blocks 25 are provided with a pair of sensors three 24 distributed left and right, the upper ends of the sliding blocks 25 are respectively provided with bolts 26 in a penetrating manner left and right of the sensors three 24, and the upper ends and the lower ends of the bolts 26 extend out of the upper ends and the lower ends of the sliding frames 27;
the left end of the air pump 1 is provided with a connecting pipe 3, and the left end of the connecting pipe 3 extends into the machine body 2 and is connected with an air injection device 28 through a flange; the air injection device 28 internally comprises a heating wire and a spray head;
the spring 31 is positioned between the placing box 7 and the connecting piece 17, the head end and the tail end of the spring 31 are respectively and fixedly connected with the connecting piece 17 and the placing box 7, the slide bar 32 is positioned between the connecting piece 17 and the clamping piece 19, the head end and the tail end of the slide bar 32 are respectively and fixedly connected with the connecting piece 17 and the clamping piece 19, and the slide bar 32 is in sliding connection with the front end and the rear end of the placing box 7; the connecting piece 17 is made of a magnet, and the electromagnet 18 is attracted to the connecting piece 17;
the grooved pulley 21 is connected with the driving plate 20 through intermittent transmission, the rear end of the driven shaft 22 penetrates through the rear end of the empty box 5 and is rotationally connected with the empty box 5, the front end of the driving shaft 23 penetrates through the front end of the empty box 5 and is rotationally connected with the empty box 5, the front end of the driving shaft 23 is connected with the power output end of the motor II 15, the rear end of the driven shaft 22 penetrates through the rear end of the driving wheel 16 and is fixedly connected with the driving wheel 16, and the rear end of the driven shaft 22 is rotationally and fixedly connected with the inside of the machine body 2;
the feeding box 4 is positioned above the conveyor belt 6, the second sensor 9 is positioned above the first sensor 8, and the opening 13 is positioned between the two conveyor belts 12;
the first motor 14 is connected with the PLC control box 29 through wires, the PLC control box 29 is respectively in communication connection with the first sensor 8, the second sensor 9 and the third sensor 24, the PLC control box 29 is electrically connected with the electromagnet 18, the third sensor 24 is aligned with the first sensor 8 below one by one, and the second sensor 9 is aligned with the first sensor 8 above one by one;
the two motors II 15 drive the corresponding driving shafts 23 to rotate clockwise at the same time, the driving shafts 23 drive the driving plates 20 to rotate clockwise, a round pin is arranged outside the driving plates 20, a plurality of radial grooves are formed outside the grooved wheels 21, the round pin of the driving plates 20 drives the radial grooves outside the grooved wheels 21, the driving plates 20 drive the grooved wheels 21 to realize clockwise intermittent transmission, the grooved wheels 21 drive the driven shafts 22 to rotate clockwise intermittently, the driven shafts 22 drive the driving wheels 16 to rotate clockwise intermittently, the two driving wheels 16 drive the driving belt 6 to drive the clockwise intermittent transmission, the placement boxes 7 intermittently move along with the intermittent transmission of the driving belt 6, and the first sensors 8 intermittently move along with the intermittent movement of the placement boxes 7;
the front end and the rear end of the conveying roller 10 are rotationally connected with the front end and the rear end of the feeding box 4, the front end of the upper left conveying roller 10 and the front end of the upper right conveying roller 10 are connected with the power output end of the corresponding motor I14, the driving wheel 16 at the left end extends out of the left end of the machine body 2, and the rotation directions of the two motors I14 are opposite; in the intermittent movement process of the placing boxes 7 driven by the driving belt 6, all the placing boxes 7 move once and stop, so that the first sensor 8 outside each placing box 7 is aligned with the second sensor 9 one by one, signals are fed back into the PLC control box 29, the PLC control box 29 triggers the first motors 14 to operate, the first motors 14 rotate oppositely, so that the two conveying rollers 10 at the upper end rotate oppositely, the conveying belts 12 at the left side and the right side drive the conveying rollers 10 in opposite directions, the spacing pieces 11 move along with the transmission of the conveying belts 12, and the two driving conveying belts 12 with opposite transmission directions enable the movement directions of the spacing pieces 11 at the left side and the right side to be opposite; the left motor I14 drives the left conveying roller 10 to rotate clockwise, and the right motor I14 drives the right conveying roller 10 to rotate anticlockwise; referring to fig. five, the PCB circuit board is first placed between two spacers 11 on the same horizontal line inside the feeding box 4, so that the PCB circuit boards are stacked in a vertically distributed manner, and then the spacers 11 on the left and right sides gradually move down all the stacked PCB circuit boards, so that the PCB circuit board gradually moves down along with the transmission of the conveyor belt 12, and the lowest PCB circuit board falls into the placement box 7 through the opening 13 below the feeding box 4; after the first sensor 8 is separated from the second sensor 9, the first sensor 8 and the second sensor 9 feed signals back to the PLC control box 29, so that the PLC control box 29 stops the first motor 14, when the first sensor 8 of the next placement box 7 is aligned with the second sensor 9, the PLC control box 29 is continuously enabled to start the first motor 14 to drive the upper conveying roller 10 to rotate, and the next PCB circuit board is continuously dropped into the corresponding placement box 7, so that the PCB circuit board in the feeding box 4 is continuously conveyed into the placement box 7, and the conveying belt 6 is enabled to convey the PCB circuit board into the machine body 2;
the air pump 1 sprays air or nitrogen into the air injection device 28, the air or nitrogen is heated by the heating wire of the air injection device 28, so that the PCB circuit board in the placement box 7 is subjected to reflow soldering, when the first sensor 8 is aligned with the second sensor 9, the PLC control box 29 controls the two electromagnets 18 in the corresponding placement box 7 to be electrified, the electromagnet 18 is electrified to attract the connecting sheet 17, the connecting sheet 17 is close to the electromagnet 18 so as to attract the electromagnet 18, the connecting sheet 17 pushes the slide bar 32 to drive the clamping sheet 19 to move in the placement box 7, the connecting sheet 17 is gradually close to the placement box 7 to compress the spring 31, the slide bar 32 enables the clamping sheet 19 to clamp the PCB circuit board firmly, the phenomenon that the PCB circuit board deviates from the position on the surface of the driving belt 6 along with the air injection device 28 in the reflow soldering process is avoided, the PCB circuit board in the placement box 7 enters the upper part of the sliding frame 27 along with the clockwise intermittent transmission of the transmission belt 6, the second sensor 9 is aligned with the third sensor 24, the second sensor 9 and the third sensor 24 can feed back to the PLC control box 29 to power off the two corresponding electromagnets 18, and the electromagnets 18 lose magnetism when power is off, so that the PCB circuit board enters the collection box 30 from the placement box 7, the collection box 30 can be taken out, the PCB circuit board after reflow soldering can be taken out, and the continuous reflow soldering operation on the PCB circuit board can be realized according to the steps in a circulating way, so that the reflow soldering quality of the PCB circuit board is improved, and the reflow soldering efficiency of the PCB circuit board is improved;
the two sliding blocks 25 can slide left and right at the upper ends of the sliding frames 27 by unscrewing the bolts 26, so that the distance between the two sensors three 24 is adjusted, the two sensors three 24 correspond to the sensors one 8 on the surface of the placement box 7, the position of the sensors three 24 is changed, the electromagnet 18 of the placement box 7 at different positions below the driving belt 6 is powered off, the placement box 7 at different positions below the driving belt 6 drops the PCB circuit board into the collection box 30, and the position between the sensors one 8 and three 24 can be adjusted or corrected.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a SMT reflow soldering machine of PCB circuit board welding, includes fuselage (2), its characterized in that:
the air pump is arranged at the upper end of the machine body (2), a plurality of air injection devices (28) which are arranged left and right are arranged at the top end inside the machine body (2), a pair of driving wheels (16) which are distributed left and right are rotationally connected to the bottom end inside the machine body (2) and positioned below the air injection devices (28), empty boxes (5) are arranged at the front ends of the two driving wheels (16), a motor II (15) is arranged at the front ends of the two empty boxes (5), driving plates (20) and grooved wheels (21) are respectively arranged at the upper side and the lower side inside the empty boxes (5), a driving shaft (23) is fixed at the center of each driving plate (20), and a driven shaft (22) is fixed at the center of each grooved wheel (21);
a transmission belt (6) is connected between the two transmission wheels (16), a plurality of placing boxes (7) are connected to the outer surface of the transmission belt (6) through screws, a pair of clamping pieces (19) which are distributed front and back are connected to the inside of each placing box (7) in a sliding mode, connecting pieces (17) are arranged at the front end and the rear end of each placing box (7), a pair of sliding rods (32) which are distributed left and right are arranged at the front end and the rear end of each placing box (7) in an inserted mode, springs (31) are sleeved outside the sliding rods (32), electromagnets (18) are arranged at the front end and the rear end of each placing box (7), and a sensor I (8) is arranged at the left side and the right side of the upper end of each placing box (7);
the left end of the machine body (2) is connected with a feeding box (4) through screws, an opening (13) is formed in the bottom end of the feeding box (4), two sensors (9) are respectively arranged at the lower end of the feeding box (4) and at the left and right sides of the opening (13), a pair of conveyor belts (12) which are distributed left and right are arranged in the feeding box (4), a plurality of spacing pieces (11) which are uniformly distributed are fixed at the outer sides of the conveyor belts (12), a pair of conveying rollers (10) which are distributed up and down are connected with the inner sides of the conveyor belts (12) in a transmission manner, the front end and the rear end of the conveying rollers (10) penetrate through the front end and the rear end of the feeding box (4), and a pair of motors (14) which are distributed left and right are arranged at the front end of the feeding box (4);
the utility model discloses a robot, including fuselage (2), drive belt (6) and slider (27), fuselage (2) left end just is located drive belt (6) below and installs PLC control box (29), fuselage (2) inside bottom just is located drive belt (6) below and is fixed with slider (27), fuselage (2) inside bottom just is located slider (27) below joint and has collection box (30), slider (27) inboard sliding connection has a pair of slider (25) that are left and right sides and distribute, two sensor three (24) that are left and right sides and arrange are installed to slider (25) upper end, slider (25) upper end just is located sensor three (24) left and right sides and all alternates and be provided with bolt (26), both ends about the slider (27) are extended to bolt (26).
2. An SMT reflow soldering machine for soldering a PCB circuit board as claimed in claim 1, wherein: the left end of the air pump (1) is provided with a connecting pipe (3), and the left end of the connecting pipe (3) extends into the machine body (2) and is connected with the air injection device (28) through a flange.
3. An SMT reflow soldering machine for soldering a PCB circuit board as claimed in claim 1, wherein: the air injection device (28) comprises a heating wire and a spray head.
4. An SMT reflow soldering machine for soldering a PCB circuit board as claimed in claim 1, wherein: the spring (31) is located between the placing box (7) and the connecting piece (17), the head end and the tail end of the spring (31) are fixedly connected with the connecting piece (17) and the placing box (7) respectively, the sliding rod (32) is located between the connecting piece (17) and the clamping piece (19), the head end and the tail end of the sliding rod (32) are fixedly connected with the connecting piece (17) and the clamping piece (19) respectively, and the sliding rod (32) is connected with the front end and the rear end of the placing box (7) in a sliding mode.
5. An SMT reflow soldering machine for soldering a PCB circuit board as claimed in claim 1, wherein: the connecting piece (17) is made of a magnet, and the electromagnet (18) is attracted to the connecting piece (17).
6. An SMT reflow soldering machine for soldering a PCB circuit board as claimed in claim 1, wherein: the grooved pulley (21) is connected with the driving plate (20) through intermittent transmission, the rear end of the driven shaft (22) penetrates through the rear end of the empty box (5) and is rotationally connected with the rear end of the empty box, the front end of the driving shaft (23) penetrates through the front end of the empty box (5) and is rotationally connected with the front end of the empty box, the front end of the driving shaft (23) is connected with the power output end of the motor II (15), the rear end of the driven shaft (22) penetrates through the rear end of the driving wheel (16) and is fixedly connected with the rear end of the driving wheel, and the rear end of the driven shaft (22) is rotationally fixedly connected with the inside of the machine body (2).
7. An SMT reflow soldering machine for soldering a PCB circuit board as claimed in claim 1, wherein: the front end and the rear end of the conveying roller (10) are rotationally connected with the front end and the rear end of the feeding box (4), the front end of the upper end of the conveying roller (10) is connected with the power output end of the corresponding motor I (14), the driving wheel (16) at the left end extends out of the left end of the machine body (2), and the rotation directions of the two motors I (14) are opposite.
8. An SMT reflow soldering machine for soldering a PCB circuit board as claimed in claim 1, wherein: the feeding box (4) is located above the transmission belt (6), the second sensor (9) is located above the first sensor (8), and the opening (13) is located between the two transmission belts (12).
9. An SMT reflow soldering machine for soldering a PCB circuit board as claimed in claim 1, wherein: the motor I (14) is connected with the PLC control box (29) through a wire, the PLC control box (29) is respectively in communication connection with the sensor I (8), the sensor II (9) and the sensor III (24), the PLC control box (29) is electrically connected with the electromagnet (18), the sensor III (24) is aligned with the sensor I (8) below one by one, and the sensor II (9) is aligned with the sensor I (8) above one by one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110277145.6A CN115070151B (en) | 2021-03-15 | 2021-03-15 | SMT reflow soldering machine for PCB circuit board soldering |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110277145.6A CN115070151B (en) | 2021-03-15 | 2021-03-15 | SMT reflow soldering machine for PCB circuit board soldering |
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| CN115070151B true CN115070151B (en) | 2023-12-05 |
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| CN115555675B (en) * | 2022-11-17 | 2023-03-21 | 南通宏城电力设备有限公司 | Automatic tin soldering equipment for manufacturing electronic element |
| CN116916642B (en) * | 2023-08-02 | 2024-02-09 | 上海璞丰光电科技有限公司 | SMT welding equipment |
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| CN206105092U (en) * | 2016-09-29 | 2017-04-19 | 深圳市日动精工科技有限公司 | Quick backflow welder of welding stability |
| CN207629346U (en) * | 2017-12-18 | 2018-07-20 | 杭州韶晖电子科技有限公司 | A kind of reflow soldering apparatus that heating effect is good |
| CN212286210U (en) * | 2020-04-23 | 2021-01-05 | 苏州工业园区胜福科技有限公司 | Material guide device of reflow welding machine |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206105092U (en) * | 2016-09-29 | 2017-04-19 | 深圳市日动精工科技有限公司 | Quick backflow welder of welding stability |
| CN207629346U (en) * | 2017-12-18 | 2018-07-20 | 杭州韶晖电子科技有限公司 | A kind of reflow soldering apparatus that heating effect is good |
| CN212286210U (en) * | 2020-04-23 | 2021-01-05 | 苏州工业园区胜福科技有限公司 | Material guide device of reflow welding machine |
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