A welding method for a circuit board

Abstract

The invention belongs to the field of welding technology, and discloses a welding method for a circuit board, which clamps and fixes the two ends of the circuit board through a clamping mechanism; the welding is performed when the operating platform and the rotating blade are rotated to the required position through the rotation of the flip mechanism; when the welding is finished, the operating platform is rotated to 90 degrees, and the rotating blade is synchronously rotated to 90 degrees, at which time the rotating blade and the absorption frame form a closed space, and then the air in the absorption frame is extracted through the mutual cooperation of the connecting pipe and the blower. The invention discloses that the smoke absorption mechanism is set so that the device can absorb the smoke generated by welding.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to a welding method for a circuit board. Background Art

[0002] The Chinese name of PCB board is printed circuit board, also known as printed circuit board or printed circuit board. It is an important electronic component that can be used to carry various electronic components, such as capacitors, inductors, resistors, diodes, connector slots, etc., and is used to connect with specific devices and modules. Among them, the electronic components on the circuit board are mainly divided into plug-ins and surface mount components. Plug-ins are electronic components with plug-in pins. When installing, the plug-in pins will pass through the circuit board and then be fixed by welding on the reverse side. Surface mount components refer to components that are only attached to the surface of the circuit board and directly bonded using surface bonding technology. Generally, solder paste is used for welding and bonding. Smoke will be generated when welding circuit boards. This type of smoke belongs to metal dust, which is harmful to the human body after inhalation. The existing circuit board welding device cannot absorb the smoke, which will be inhaled into the lungs of welders. After a long period of accumulation, it will cause great harm to the human body.

[0003] In this regard, the present invention discloses a welding method for a circuit board to solve the above problems.

[0004] Invention Disclosure

[0005] The purpose of the present invention is to solve the above problems. The present invention provides a welding method for circuit boards, which has the advantage of absorbing exhaust gas.

[0006] To achieve the above objectives, the present invention discloses the following technical solutions:

[0007] 1. A welding method for a circuit board, the welding method adopts a welding device for processing a circuit board, comprising a support assembly, a clamping mechanism and a flipping mechanism are provided on the support assembly, and a smoke absorption mechanism is provided in the support assembly; the clamping mechanism comprises an operating platform; the flipping mechanism comprises a rotating blade; the smoke absorption mechanism comprises an absorption frame, a pressure detection device, a blower box, a double-axis motor, an electromagnetic latch, and an eccentric block; the welding method is characterized in that it comprises the following steps:

[0008] Step (1), clamping and fixing the two ends of the circuit board by a clamping mechanism;

[0009] Step (2), welding is performed when the operating platform and the rotating blade are rotated to a desired position by rotating the flipping mechanism;

[0010] Step (3), when welding is finished, the operating platform is rotated to 90°, and the rotating blades are synchronously rotated to 90°. At this time, the rotating blades and the absorption frame form a closed space, and the air in the absorption frame is extracted through the cooperation of the connecting pipe and the blower;

[0011] Step (4), when the pressure value detected by the pressure detection device is negative pressure, the dual-axis motor is reversed to blow air into the absorption frame, and at the same time, the electromagnetic plug on the output shaft of the dual-axis motor is energized to fix the eccentric block with the output shaft, so that the eccentric block generates centrifugal force, thereby causing the smoke absorption mechanism to vibrate, and at the same time, the operating platform is rotated to a suitable angle to cooperate with the wind force generated by the blower and the vibration generated by the smoke absorption mechanism to collect the welding slag into the receiving box, thereby completing the collection of welding slag;

[0012] Step (5), after the waste is cleaned, the operating platform is reset to complete the welding work.

[0013] Preferably, the specific steps of step (1) include: first rotating the knob to drive the first clamp and the second clamp thereon to move away from the other second clamp through the screw rod, so that the distance between the two second clamps is greater than the length of the circuit board, and then pulling up the second clamp at one end of the screw rod. At this time, the first round rod will slide on the first clamp and the second receiving groove will be in a compressed state. Then, one end of the circuit board is placed between the first clamp and the second clamp, and then the pulled up second clamp is released. At this time, the second clamp will press one end of the circuit board under the action of the spring to complete the fixation of one end of the circuit board, and then the knob is rotated to make the other end of the circuit board close to the other first clamp and the second clamp.

[0014] Preferably, the clamping mechanism comprises an operating platform, and rotating rods are fixedly connected to both sides of the operating platform respectively, and the rotating rods are rotatably connected to both sides of the containing box, and the electric soldering iron is installed on the upper surface of the containing box.

[0015] The flip mechanism includes a stepper motor, the output end of the stepper motor is respectively connected to the first crawler and the second crawler, the other end of the first crawler is connected to the first linkage gear on the end of the rotating rod near the stepper motor; the other end of the second crawler is connected to the second linkage gear; the second linkage gear is connected to the third linkage gear through the third crawler, the third linkage gear is fixedly connected to the rotating blade, and the third linkage gear is located inside the smoke absorption mechanism;

[0016] The smoke absorption mechanism includes an absorption frame, the inner side of the absorption frame is fixedly connected to a connecting pipe, a pressure detection device is arranged in the connecting pipe, the other end of the connecting pipe is connected to a blow box, the air outlet of the blow box is fixedly connected to an exhaust pipe, the blow box is connected to the output shaft on one side of the dual-axis motor, an electromagnetic pin is arranged on the output shaft on the other side of the dual-axis motor, an eccentric block is arranged corresponding to the electromagnetic pin, and the eccentric block is rotatably connected to the second cylinder.

[0017] Preferably, the inner bottom surface of the containing box is inclined and the inner bottom surface of the containing box and the inner bottom surface of the discharge pipe are located in the same plane.

[0018] Preferably, the clamping mechanism includes an operating platform, the operating platform is located in the first give way groove, and the two sides of the operating platform are rotatably connected to the inner wall of the first give way groove through a rotating rod, the upper surface of the operating platform is provided with a second give way groove and a first accommodating groove, and the first accommodating groove is located in the middle of the second give way groove, the two first clamping blocks and the two second clamping blocks correspond to each other one by one and are all located in the second give way groove, the two sides of the two first clamping blocks are slidably connected with the inner side sliding grooves of the second give way groove, the first clamping block is located below the corresponding second clamping block, the bottom surface of the first clamping block is provided with a second accommodating groove, and the lower surface of the second clamping block is fixed with a first round rod at the position corresponding to the second accommodating groove, and the first round rod is fixed to the lower surface of the second clamping block at the position corresponding to the second accommodating groove. The other end of the rod passes through the first clamping block and is fixed with a first stopper, the first stopper is located in the second accommodating groove and the first round rod is slidably matched with the first clamping block, a spring is sleeved on the circumferential side of the first round rod, the spring is located in the second accommodating groove and two ends of the spring are respectively fitted with the inner wall of the second accommodating groove and the first stopper, a first cylinder is fixed on one side of the first clamping block, and the other first clamping block is rotatably connected to an inner wall of the second give way groove through a rotating shaft, the screw rod is located in the first accommodating groove and one end of the screw rod passes through an inner wall of the first accommodating groove and the first cylinder in sequence, the screw rod is threadedly matched with the operating platform, the screw rod is rotatably connected to the first cylinder, and a knob is fixed to the other end of the screw rod.

[0019] Preferably, two partitions are symmetrically fixed in the containing box, one surface of the two partitions overlaps with an opposite inner side surface of the discharge pipe respectively, and the two partitions divide the interior of the containing box into a middle cavity and two side cavities, and the middle cavity is connected to the discharge pipe.

[0020] Preferably, the support assembly includes a containing box, two supporting blocks are symmetrically fixed to the bottom of the containing box, a first clearance groove is opened on the upper surface of the containing box, a discharge pipe is fixedly connected to one side of the containing box, and a buffer device is fixedly installed on the bottom of the two supporting blocks.

[0021] Preferably, the rotor gear on the flip motor makes the first linkage gear and the second linkage gear have the same rotation speed through the meshed first crawler track and the second crawler track.

[0022] Preferably, the initial position of the rotating blade is horizontal, and the rotating blade rotates 90°, so that the rotating blade forms a seal with the absorption frame.

[0023] Preferably, the insertion rod of the electromagnetic latch is inserted into the eccentric block, the dual-axis motor drives the eccentric block to rotate through the electromagnetic latch, and the eccentric block drives the containing box and the operating platform to vibrate.

[0024] Compared with the prior art, the beneficial effects disclosed by the present invention are as follows:

[0025] 1. The present invention provides a smoke absorption mechanism. Before welding, the controller can be used to control the output shaft of the stepper motor to rotate, thereby driving the first track and the second track to transmit respectively, so that the first linkage gear and the second linkage gear rotate synchronously. At the same time, the second linkage gear drives the third linkage gear to rotate synchronously through the third track, so that the operating platform connected to the first linkage gear and the rotating blade connected to the third linkage gear rotate synchronously. The rotating blade follows the rotation angle and direction of the circuit board and adjusts the angle synchronously, and is always in a position conducive to absorbing the gas generated during welding. The absorption frame absorbs the smoke generated by welding under the action of the blower box, and then processes it uniformly, reducing the damage of the smoke to the body of the welder and creating a good working environment for the welder.

[0026] 2. The present invention sets a double-axis motor to blow air in the reverse direction into the absorption frame, and at the same time, the electromagnetic pin on the output shaft of the double-axis motor is energized, so that the eccentric block is fixedly connected to the output shaft, so that the eccentric block generates centrifugal force, thereby causing the smoke absorption mechanism to vibrate, and then the supporting assembly to vibrate. At the same time, the operating platform is rotated to a suitable angle to cooperate with the wind force generated by the blower and the vibration generated by the smoke absorption mechanism to collect the welding slag into the containing box, thereby completing the collection of the welding slag and achieving the effect of rapid cleaning.

[0027] 3. The present invention arranges eccentric blocks, rotating blades, etc., and after the circuit board is welded and the eccentric blocks are vibrated to promote the removal of welding slag, the controller controls the output shaft of the stepper motor to rotate, thereby driving the first track and the second track to transmit respectively, and finally the operating platform and the rotating blades are rotated to a certain angle. The wind generated by the blower blows the circuit board on the operating platform through the rotating blades to cool it, and at the same time helps to blow away the welding slag and promote the removal of welding slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure disclosed by the present invention;

[0029] Figure 2 is a cross-sectional view of a support assembly;

[0030] Figure 3is a structural schematic diagram of the clamping mechanism;

[0031] Figure 4 is a cross-sectional view of the flip assembly;

[0032] Figure 5 It is a structural schematic diagram of the first clamping block and the second accommodating groove when connected;

[0033] Figure 6 for Figure 5 A cross-sectional view of

[0034] Figure 7 It is a structural schematic diagram of the smoke absorption mechanism;

[0035] Figure 8 for Figure 2 Schematic diagram of the structure from another angle.

[0036] In the figure: 1. Support assembly; 101. Receiving box; 102. Support block; 103. First clearance groove; 104. Partition plate; 105. Discharging pipe; 106. Buffer device; 2. Clamping mechanism; 201. Operating platform; 202. Second clearance groove; 203. First receiving groove; 204. First clamping block; 205. Second receiving groove; 206. Second clamping block; 207. First round rod; 208. First stopper; 209. Spring; 210. First cylinder; 211. Screw rod; 212. Knob; 213. Rotating rod ; 3. Flipping mechanism; 301. Stepper motor; 302. First crawler; 303. Second crawler; 304. Second linkage gear; 305. Third linkage gear; 306. Rotating blade; 307. First linkage gear; 308. Third crawler; 4. Smoke absorption mechanism; 401. Absorption frame; 402. Connecting pipe; 403. Pressure detection device; 404. Exhaust pipe; 405. Blower box; 406. Dual-axis motor; 407. Eccentric block; 408. Electromagnetic latch; 409. Second cylinder; 5. Electric soldering iron. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments disclosed in the present invention to clearly and completely describe the technical solutions in the embodiments disclosed in the present invention. Obviously, the described embodiments are only part of the embodiments disclosed in the present invention, rather than all the embodiments. Based on the embodiments disclosed in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection disclosed in the present invention.

[0038] like Figure 1-Figure 8As shown, the present invention discloses a welding device for circuit board processing, including an electric soldering iron 5, characterized in that: it includes a support assembly 1, the support assembly 1 includes a containing box 101, the inner bottom surface of the containing box 101 is inclined and the inner bottom surface of the containing box 101 and the inner bottom surface of the discharge pipe 105 are located in the same plane, two partitions 104 are symmetrically fixed in the containing box 101, one surface of the two partitions 104 overlaps with a relative inner side surface of the discharge pipe 105 respectively, and the two partitions 104 divide the inside of the containing box 101 into a middle cavity and two side cavities, the middle cavity is connected to the discharge pipe 105, two support blocks 102 are symmetrically fixed at the bottom of the containing box 101, and a buffer device 106 is fixedly installed at the bottom of the two support blocks 102. A clamping mechanism 2 and a turning mechanism 3 are provided on the support assembly 1, and a smoke absorption mechanism 4 is provided in the support assembly 1.

[0039] The clamping mechanism 2 includes an operating platform 201, two first clamping blocks 204, two second clamping blocks 206, a screw rod 211, and a rotating rod 213. The operating platform 201 is located in the first clearance groove 103, and the two sides of the operating platform 201 are connected to the first clearance groove 103 by the rotating rod 213. The upper surface of the operating platform 201 is provided with a second clearance groove 202 and a first receiving groove 203, and the first receiving groove 203 is located in the middle of the second clearance groove 202. The two first clamping blocks 204 The two first clamping blocks 204 correspond to the two second clamping blocks 206 one by one and are both located in the second make way groove 202. The two first clamping blocks 204 are slidably connected to the inner sliding grooves of the second make way grooves 202 on both sides. The first clamping block 204 is located below the corresponding second clamping block 206. The bottom surface of the first clamping block 204 is provided with a second receiving groove 205. A first round rod 207 is fixed at the position of the second receiving groove 205 on the lower surface of the second clamping block 206. The other end of the first round rod 207 passes through the first clamping block 204 and is fixed with a first stopper 206. 08, the first stopper 208 is located in the second receiving groove 205 and the first round rod 207 is slidably matched with the first clamping block 204, a spring 209 is sleeved on the side surface of the first round rod 207, the spring 209 is located in the second receiving groove 205 and the two ends of the spring 209 are respectively fitted with the inner wall of the second receiving groove 205 and the first stopper 208, a first cylinder 210 is fixed on one side of the first clamping block 204, and the other first clamping block 204 is rotatably connected with the inner wall of the second giving way groove 202 through a rotating shaft, and the thread The rod 211 is located in the first receiving groove 203 and one end of the screw rod 211 passes through an inner wall of the first receiving groove 203 and the first cylinder 210 in sequence. The screw rod 211 is threadedly matched with the operating platform 201. The screw rod 211 is rotatably connected to the first cylinder 210. A knob 212 is fixed to the other end of the screw rod 211. The two sides of the operating platform 201 are respectively fixedly connected with rotating rods 213. The rotating rods 213 are rotatably connected to the two sides of the receiving box 101. The electric soldering iron 5 is installed on the upper surface of the receiving box 101.

[0040] The flipping mechanism 3 includes a stepping motor 301, the output end of which is respectively connected to the first crawler 302 and the second crawler 303, and the other end of the first crawler 302 is connected to the first linkage gear 307 on the end of the rotating rod 213 on the side of the stepping motor 301; the rotor gear on the flipping motor 301 makes the first linkage gear 307 and the second linkage gear 304 have the same rotation speed through the meshed first crawler 302 and the second crawler 303, and the other end of the second crawler 303 is connected to the second linkage gear 304; the second linkage gear 304 is connected to the third linkage gear 305 through the third crawler 308, and the third linkage gear 305 is fixedly connected to the rotating blade 306 Next, when the operating platform 201 rotates through the first linkage gear, the rotating blade 306 rotates synchronously with the operating platform 201, the first and third linkage gears 305 are located inside the smoke absorption mechanism 4, the initial position of the rotating blade 306 is horizontal, the rotating blade 306 rotates 90°, the rotating blade 306 forms a seal on the absorption frame 401, and the air in the absorption frame 401 is extracted through the cooperation of the connecting pipe 402 and the blower. At this time, when the pressure value detected by the pressure detection device 403 is close to the negative pressure, the dual-axis motor 406 is reversed to blow air into the absorption frame 401, and then the operating platform 201 and the rotating blade 306 are rotated by the stepping motor 301, and then the welding slag is discharged.

[0041] The smoke absorption mechanism 4 includes an absorption frame 401, the inner side of the absorption frame 401 is fixedly connected to a connecting pipe 402, the connecting pipe 402 is provided with a pressure detection device 403, the other end of the connecting pipe 402 is connected to a blower box 405, the air outlet of the blower box 405 is fixedly connected to an exhaust pipe 404, the blower box 405 is connected to the output shaft of one side of the double-axis motor 406, the other side of the output shaft of the double-axis motor 406 is provided with an electromagnetic latch 408, the electromagnetic latch 408 is provided with an eccentric block 407 corresponding to the eccentric block 407 is rotatably connected to the second cylinder 409, the insertion rod of the electromagnetic plug 408 is inserted into the eccentric block 407, the dual-axis motor 406 drives the eccentric block 407 to rotate through the electromagnetic plug 408, and the eccentric block 407 drives the containing box 101 and the operating platform 201 to vibrate, so that the welding slag produced by welding falls into the containing box 101 under the action of vibration. The welding slag falls into the containing box 101 and is discharged from the discharge pipe 105 through the inclined surface set on the bottom surface of the containing box 101 in conjunction with the vibration of the containing box 101.

[0042] A slide groove is provided in the second clearance groove 202, and both ends of the first clamp block 204 are slidably connected to the second clearance groove 202 through the slide groove. When the clamp is moved by the knob 212, the horizontal position of the clamp will not change due to the restriction of the slide groove on the clamp, and the position of the clamp relative to the operating platform 201 will not change when the operating platform 201 is rotated, thereby improving the stability of the clamp.

[0043] The controller controls the output shaft of the stepper motor 301 to rotate, thereby driving the first track 302 and the second track 303 to transmit respectively, so that the first linkage gear 307 and the second linkage gear 304 rotate synchronously, and at the same time, the second linkage gear 304 drives the third linkage gear 305 to rotate synchronously through the third track 308, so that the operating platform 201 connected to the first linkage gear 307 and the rotating blade 306 connected to the third linkage gear 305 rotate synchronously, which has at least three functions: first, adjusting the angle of the operating platform to change the angle of the circuit board, which is conducive to welding different electrical components at different angles; second, the rotating blade 306 follows the rotation angle and direction of the circuit board, adjusts the angle synchronously, and is always in a position that is conducive to absorbing the gas generated during welding; third, when the circuit board is welded, the rotating blade 306 is always in a position that is conducive to cooling and cleaning the circuit board.

[0044] When the dual-axis motor 406 rotates forward, the blower 405 will generate suction to suck the toxic gas into the exhaust gas treatment device connected to the exhaust pipe 404 through the connection pipe 402 and the rotating blades to complete the exhaust gas treatment.

[0045] When the welding of the circuit board is completed, the controller controls the output shaft of the stepper motor 301 to rotate, thereby driving the first track 302 and the second track 303 to transmit respectively, so that the first linkage gear 307 and the second linkage gear 304 rotate synchronously, and at the same time, the second linkage gear 304 drives the third linkage gear 305 to rotate synchronously through the third track 308, so that the operating platform 201 connected to the first linkage gear 307 and the rotating blade 306 connected to the third linkage gear 305 rotate synchronously, so that when the operating platform 201 rotates to 90°, the rotating blade 306 rotates synchronously to 90°, at this time, the rotating blade 306 and the absorption frame 401 form a closed space, and then the air in the absorption frame 401 is extracted through the mutual cooperation of the connecting pipe 402 and the blower, and at this time, when the pressure value detected by the pressure detection device 403 is negative pressure, the dual-axis motor 406 is reversed to blow into the absorption frame 401 At the same time, the electromagnetic plug 408 on the output shaft of the dual-axis motor 406 is energized, and the plug rod of the electromagnetic plug 408 is inside the eccentric block 407, ensuring that the dual-axis motor 406 can drive the eccentric block 407 to rotate synchronously through the electromagnetic plug 408, and the rotating eccentric block 407 generates centrifugal force, and the eccentric block 407 can eventually drive the smoke absorption mechanism 4 to vibrate, and then the support component 1 vibrates, and the vibration is finally transmitted to the clamping mechanism 2 through the support component 1, so that the welding slag falls into the containing box 101 under the action of the vibration; while the eccentric block 407 vibrates, the controller controls the output shaft of the stepper motor 301 to rotate, thereby driving the first crawler 302 and the second crawler 303 to transmit respectively, and finally the operating platform 201 and the rotating blade 306 rotate a certain angle, and the wind generated by the blower 405 blows the circuit board on the operating platform 201 through the rotating blade 306 to cool it, and at the same time it is conducive to blowing off the welding slag and promoting the removal of the welding slag.

[0046] The inner bottom surface of the containing box 101 is inclined and the inner bottom surface of the containing box 101 and the inner bottom surface of the discharge pipe 105 are located in the same plane, so that the waste falling into the inner bottom surface of the containing box 101 can be gathered near the discharge pipe 105 under the action of gravity. Two partitions 104 are symmetrically fixed in the containing box 101, and one surface of the two partitions 104 coincides with an opposite inner side surface of the discharge pipe 105 respectively, and the two partitions 104 divide the interior of the containing box 101 into a middle cavity and two side cavities, and the middle cavity is connected with the discharge pipe 105, so that the waste can be gathered to the pipe mouth of the discharge pipe 105 for easy discharge.

[0047] When the device is in use, the knob 212 is first rotated to drive the first clamping block 204 and the second clamping block 206 thereon to move away from the other second clamping block 206 through the screw rod 211, so that the distance between the two second clamping blocks 206 is greater than the length of the circuit board. Then, the second clamping block 206 at one end of the screw rod 211 is pulled upward. At this time, the first round rod 207 slides on the first clamping block 204 and the second receiving groove 205 is in a compressed state. Then, one end of the circuit board is placed between the first clamping block 204 and the second clamping block 206. Then release the pulled up second clamp block 206, at this time the second clamp block 206 will press one end of the circuit board under the action of the spring 209 to complete the fixation of one end of the circuit board, then rotate the knob 213 to make the other end of the circuit board close to the other first clamp block 204 and the second clamp block 206, and then repeat the above process to complete the fixation of the other end of the circuit board, and use the controller to rotate the stepping motor 301 to rotate the operating platform 201 and the rotating blade 306 to the desired position for welding. Before welding, the user can turn on the blower box 403 to suck The collection frame 401 absorbs the odor generated by welding under the action of the blower box 405. When welding is finished, the operating platform 201 is rotated to 90°, and the rotating blades 306 are synchronously rotated to 90°. At this time, the rotating blades 306 and the absorption frame 401 form a closed space, and then the air in the absorption frame 401 is extracted through the cooperation of the connecting pipe 402 and the blower. At this time, when the pressure value detected by the pressure detection device 403 is negative pressure, the dual-axis motor 406 is reversed to blow air into the absorption frame 401. At the same time, the dual-axis motor 406 is rotated to the opposite direction to blow air into the absorption frame 401. The electromagnetic plug 408 on the output shaft of the shaft motor 406 is energized to fix the eccentric block 407 with the output shaft, so that the eccentric block 407 generates centrifugal force, thereby causing the smoke absorption mechanism 4 to vibrate, and then the support assembly 1 to vibrate. At the same time, the operating platform 201 is rotated to a suitable angle to cooperate with the wind force generated by the blower 405 and the vibration generated by the smoke absorption mechanism 4 to collect the welding slag into the containing box 101, completing the collection of the welding slag, and finally discharged by the discharge pipe 105. After the waste is cleaned, the operating platform 201 is reset to complete the welding work.

[0048] To sum up: on the one hand, the controller controls the output shaft of the stepper motor 301 to rotate, thereby driving the first track 302 and the second track 303 to transmit respectively, so that the first linkage gear 307 and the second linkage gear 304 rotate synchronously, and at the same time, the second linkage gear 304 drives the third linkage gear 305 to rotate synchronously through the third track 308, so that the operating platform 201 connected to the first linkage gear 307 and the rotating blade 306 connected to the third linkage gear 305 rotate synchronously. On the one hand, the angle of the operating platform can be adjusted to change the angle of the circuit board, which is conducive to welding different electrical components at different angles; secondly, the rotating blade 306 follows the rotation angle and direction of the circuit board, adjusts the angle synchronously, and is always in a position that is conducive to absorbing the gas generated during welding; thirdly, when the circuit board is welded, the rotating blade is always in a position that is conducive to cooling and cleaning the circuit board. On the other hand, when the dual-axis motor 406 rotates forward, the blower 405 will generate suction to inhale the toxic gas into the exhaust gas treatment device connected to the exhaust pipe 404 through the cooperation of the connecting pipe 402 and the rotating blades, thereby completing the exhaust gas treatment; when the dual-axis motor 406 rotates reversely, it blows air into the absorption frame 401, and then the absorption frame 401 blows air toward the circuit board, and the circuit board is cooled and cleaned under the action of the blowing air; again, when the dual-axis motor 406 rotates in the opposite direction, it blows air into the absorption frame 401, and at the same time, the electromagnetic plug 408 on the output shaft of the dual-axis motor 406 is energized, so that the eccentric block 407 is fixedly connected to the output shaft, so that the eccentric block 407 generates centrifugal force, thereby causing the smoke absorption mechanism 4 to vibrate, and then the support assembly 1 to vibrate, and at the same time, the operating platform 201 is rotated to a suitable angle to cooperate with the wind force generated by the blower 405 and the vibration generated by the smoke absorption mechanism 4 to collect the welding slag into the containing box 101, thereby completing the collection of welding slag.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants 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.

[0050] Although the 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 the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding method for a circuit board, the welding method adopts a welding device for processing a circuit board, comprising a support assembly (1), the support assembly (1) is provided with a clamping mechanism (2) and a turning mechanism (3), the support assembly (1) is provided with a smoke absorption mechanism (4); the clamping mechanism (2) comprises an operating platform (201); the turning mechanism (3) comprises a rotating blade (306); the smoke absorption mechanism (4) comprises an absorption frame (401), a pressure detection device (403), a blower box (405), a double-axis motor (406), an electromagnetic latch (408), and an eccentric block (407); characterized in that The welding method comprises the following steps: Step (1), clamping and fixing the two ends of the circuit board by means of the clamping mechanism (2); Step (2), welding is performed when the operating platform (201) and the rotating blade (306) are rotated to a desired position by rotating the turning mechanism (3); Step (3), when welding is finished, the operating platform (201) is rotated to 90°, and the rotating blade (306) is synchronously rotated to 90°. At this time, the rotating blade (306) and the absorption frame (401) form a closed space, and the air in the absorption frame (401) is then extracted through the cooperation of the connecting pipe and the blower; Step (4), when the pressure value detected by the pressure detection device (403) is negative pressure, the dual-axis motor (406) is reversed to blow air into the absorption frame (401), and at the same time, the electromagnetic plug (408) on the output shaft of the dual-axis motor (406) is energized to fix the eccentric block (407) with the output shaft, so that the eccentric block (407) generates centrifugal force, thereby causing the smoke absorption mechanism (4) to vibrate, and at the same time, the operating platform (201) is rotated to a suitable angle to cooperate with the wind force generated by the blower (405) and the vibration generated by the smoke absorption mechanism (4) to collect the welding slag into the containing box (101), thereby completing the collection of welding slag; Step (5), after the waste is cleaned, the operating platform (201) is reset to complete the welding work; The specific steps of step (1) include: firstly, rotating the knob (212), driving the first clamping block (204) and the second clamping block (206) thereon to move in a direction away from the other second clamping block (206) through the screw rod (211), so that the distance between the two second clamping blocks (206) is greater than the length of the circuit board, and then pulling up the second clamping block (206) at one end of the screw rod (211), at which time the first round rod (207) will slide on the first clamping block (204) and the second receiving groove (205) will be in a compressed state, and then one end of the circuit board is placed in the first clamping block (204) and the second clamping block (206). ), and then release the pulled up second clamp (206), at which time the second clamp (206) will press one end of the circuit board under the action of the spring (209), completing the fixation of one end of the circuit board, and then rotate the knob (213) to make the other end of the circuit board close to the other first clamp (204) and the second clamp (206); the clamping mechanism (2) includes an operating platform (201), and the operating platform (201) is fixedly connected to rotating rods (213) on both sides, and the rotating rods (213) are rotatably connected to the two sides of the storage box (101), and the electric soldering iron (5) is installed on the upper surface of the storage box (101); The flipping mechanism (3) comprises a stepping motor (301), the output end of the stepping motor (301) is respectively connected to the first crawler (302) and the second crawler (303), the other end of the first crawler (302) is connected to the first linkage gear (307) on the end of the rotating rod (213) close to the stepping motor (301); the other end of the second crawler (303) is connected to the second linkage gear (304); the second linkage gear (304) is connected to the third linkage gear (305) through the third crawler (308), the third linkage gear (305) is fixedly connected to the rotating blade (306), and the third linkage gear (305) is located inside the smoke absorption mechanism (4); The smoke absorption mechanism (4) comprises an absorption frame (401), the inner side of the absorption frame (401) is fixedly connected to a connecting pipe (402), a pressure detection device (403) is arranged in the connecting pipe (402), the other end of the connecting pipe (402) is connected to a blower box (405), the air outlet of the blower box (405) is fixedly connected to an exhaust pipe (404), the blower box (405) is connected to an output shaft on one side of a double-axis motor (406), an electromagnetic latch (408) is arranged on the output shaft on the other side of the double-axis motor (406), an eccentric block (407) is arranged corresponding to the electromagnetic latch (408), and the eccentric block (407) is rotatably connected to the second cylinder (409); the accommodating box (10 1) the inner bottom surface is inclined and the inner bottom surface of the containing box (101) and the inner bottom surface of the discharge pipe (105) are located in the same plane; the clamping mechanism (2) comprises an operating platform (201), the operating platform (201) is located in the first clearance groove (103), and the two sides of the operating platform (201) are rotatably connected to the first clearance groove (103) relative to the inner wall through a rotating rod (213), the upper surface of the operating platform (201) is provided with a second clearance groove (202) and a first containing groove (203), and the first containing groove (203) is located in the middle of the second clearance groove (202), the two first clamping blocks (204) and the two second clamping blocks (206) correspond to each other one by one and are both located in the second clearance groove (202), and the two first clamping blocks (20 4) Both sides are slidably connected with the inner sliding groove of the second giving way groove (202), the first clamping block (204) is located below the corresponding second clamping block (206), the bottom surface of the first clamping block (204) is provided with a second receiving groove (205), a first round rod (207) is fixed at the position of the lower surface of the second clamping block (206) corresponding to the second receiving groove (205), the other end of the first round rod (207) passes through the first clamping block (204) and is fixed with a first stopper (208), the first stopper (208) is located in the second receiving groove (205) and the first round rod (207) is slidably matched with the first clamping block (204), a spring (209) is sleeved on the peripheral side surface of the first round rod (207), and the spring (209) is positioned The spring (209) is in the second receiving groove (205) and the two ends of the spring (209) are respectively fitted with the inner wall of the second receiving groove (205) and the first stopper (208); a first cylinder (210) is fixed to one side of the first clamping block (204); the other first clamping block (204) is rotatably connected to an inner wall of the second giving way groove (202) through a rotating shaft; the screw rod (211) is located in the first receiving groove (203) and one end of the screw rod (211) passes through an inner wall of the first receiving groove (203) and the first cylinder (210) in sequence; the screw rod (211) is threadedly matched with the operating platform (201); the screw rod (211) is rotatably connected to the first cylinder (210); and a knob (212) is fixed to the other end of the screw rod (211).

2. The method according to claim 1, characterized in that: Two partitions (104) are symmetrically fixed inside the containing box (101), one surface of the two partitions (104) respectively overlaps with an opposite inner side surface of the discharge pipe (105), and the two partitions (104) divide the interior of the containing box (101) into a middle cavity and two side cavities, and the middle cavity is connected to the discharge pipe (105).

3. The method according to claim 2, characterized in that: The support assembly (1) comprises a containing box (101), two supporting blocks (102) are symmetrically fixed at the bottom of the containing box (101), a first clearance groove (103) is opened on the upper surface of the containing box (101), a discharge pipe (105) is fixedly connected to one side of the containing box (101), and a buffer device (106) is fixedly installed at the bottom of the two supporting blocks (102).

4. The method according to claim 3, characterized in that: The rotor gear on the stepping motor (301) enables the first linkage gear (307) and the second linkage gear (304) to have the same rotation speed through the meshed first crawler belt (302) and the second crawler belt (303).

5. The method according to claim 4, characterized in that: The initial position of the rotating blade (306) is in the horizontal direction. When the rotating blade (306) rotates 90°, the rotating blade (306) forms a seal with the absorption frame (401).

6. The method according to claim 5, characterized in that: The insertion rod of the electromagnetic latch (408) is inserted into the eccentric block (407), and the dual-axis motor (406) drives the eccentric block (407) to rotate through the electromagnetic latch (408), and the eccentric block (407) drives the containing box (101) and the operating platform (201) to vibrate.

Images