Small integrated welding machine

Abstract

The invention relates to the technical field of circuit board welding, in particular to a small integrated welding machine. The small integrated welding machine comprises a first conveying device. The first protective cover is arranged on the upper side of the first conveying device; the welding device and the soldering flux spraying device are arranged on the moving module and located on the lower side of the first conveying device. The scaling powder spraying device comprises a scaling powder box and a spray head arranged in the scaling powder box; the spray head can spray soldering flux to the circuit board; the welding device comprises a tin furnace, a tin soldering head and a tin furnace box; the tin furnace box covers the tin furnace, and the tin soldering head is connected with the tin furnace. And the soldering tin is welded on a welding spot of the circuit board by the soldering tin head. The tin furnace melts soldering tin, the melted soldering tin is spot-welded on the circuit board by the soldering tin head, and the soldered soldering tin is uniform, neat in appearance and good in soldering quality. The welding device and the soldering flux spraying device are located on the lower side of the first conveying device, so that parts in the cabinet are very compact, and miniaturization of equipment is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board welding, in particular to a small integrated welding machine. Background Art

[0002] When producing circuit boards, soldering technology is used. During soldering, flux is sprayed on the soldering position, and then the components and circuit boards are soldered together. There are already many soldering machines on the market for soldering circuit boards, but some of them use solder and soldering iron tips to solder circuit boards. The soldering iron tip melts the tin wire, and the melted tin sticks to the circuit board. The solder soldered in this way may have problems such as uneven soldering, uneven appearance, and easy cold soldering.

[0003] For example, the automatic soldering machine disclosed in Chinese patent application number: CN201520867471 specifically discloses that "the tin feeding mechanism feeds the tin wire, and the four-axis manipulator drives the soldering iron head to heat and melt the tin wire, and performs soldering processing on the product". This type of soldering machine uses the soldering iron head to melt the tin wire for soldering, which may cause problems such as uneven soldering, uneven appearance, and easy cold soldering.

[0004] Another example is a soldering robot and soldering equipment disclosed in Chinese patent application number: CN201721443669. It also uses a soldering iron tip to melt the tin wire for welding. It also has the problems of uneven soldering, uneven appearance, and easy cold soldering. Summary of the invention

[0005] In view of this, the present invention aims at the deficiencies of the prior art, and its main purpose is to provide a small integrated welding machine, whose soldering head solders the molten tin on the circuit board, the soldering is uneven, the appearance is neat, and the welding quality is guaranteed, thereby overcoming the deficiencies of the prior art.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: The present application provides a small integrated welding machine, comprising a first conveying device; a first protective cover is arranged on the upper side of the first conveying device; a welding device and a flux spraying device are arranged on a movable module and are located on the lower side of the first conveying device; the flux spraying device comprises a flux box and a nozzle arranged in the flux box; the nozzle can spray flux onto the circuit board; the welding device comprises a tin furnace, a soldering head, and a tin furnace box, the tin furnace box covers the tin furnace, and the soldering head is connected to the tin furnace; the soldering head can move toward the circuit board on the first conveying device and solder the solder on the soldering point of the circuit board.

[0007] Preferably, the first conveying device includes a conveying track, a first limiting plate, a second limiting plate, and conveying wheels, and a plurality of conveying wheels are arranged on the conveying track; the first limiting plate and the second limiting plate are arranged on the conveying track, the first limiting plate can support the edge of the circuit board, and the second limiting plate can press the edge of the circuit board.

[0008] Preferably, the first limit plate is provided with a bent first pin hole, the first plug pin is provided in the first pin hole, and the first limit plate is connected to the output end of the first cylinder; The second limiting plate is provided with a second bent pin hole, the second latch pin is provided in the second pin hole, and the second limiting plate is connected to the output end of the second cylinder.

[0009] Preferably, the conveying track is arranged on a first mounting frame, and the first mounting frames are connected by a first screw rod.

[0010] Preferably, the conveying wheel has a flange, and the flange supports the edge of the circuit board.

[0011] Preferably, the first protective cover includes a protective cover body, side baffles arranged on the left and right side walls of the protective cover body, a rear baffle arranged on the rear wall of the protective cover body, and a cover door arranged on the front wall of the protective cover body; wherein the side baffles are provided with long first air holes.

[0012] Preferably, nitrogen is filled between the tin furnace box and the tin furnace; and a detection camera is arranged on the side of the soldering head, and the detection camera faces the circuit board.

[0013] Preferably, the movable module includes a first sliding module, a second sliding module and a lifting module, the second sliding module is arranged on the first sliding module, and the lifting module is arranged on the second sliding module; a connecting hole is arranged on the supporting seat of the lifting module; the nitrogen pipeline of the tin furnace box passes through the connecting hole; and a second air hole is arranged on the box body of the tin furnace box.

[0014] Preferably, the first conveying device, the welding device, and the flux spraying device are arranged in a cabinet, the input port of the cabinet is provided with a first cabinet door, and the output port of the cabinet is provided with a second cabinet door. Preferably, a smoke exhaust port is provided on the top of the cabinet, and the smoke exhaust port is connected to a smoke exhaust pipe; casters and legs are provided on the bottom of the cabinet; and a display is provided on the top of the cabinet.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that the welding device and the flux spraying device are arranged on the moving module and are located at the lower side of the first conveying device. The moving module enables the welding device and the flux spraying device to move in the XYZ direction. The tin furnace melts the solder, and the molten solder is spot-welded on the circuit board by the solder head. The solder produced by this welding is uniform, neat in appearance, and has good welding quality.

[0016] The first protective cover is arranged on the upper side of the first conveying device, which can reduce environmental interference and ensure welding quality. Before welding, the nozzle can evenly spray soldering flux to the circuit board, which is more conducive to ensuring welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an external overall schematic diagram of an embodiment of the present invention.

[0018] Figure 2 This is an internal structural diagram of an embodiment of the present invention.

[0019] Figure 3 The embodiment of the present invention Figure 2 Schematic diagram of some structures.

[0020] Figure 4 It is a schematic diagram of a first protective cover according to an embodiment of the present invention.

[0021] Figure 5 It is a schematic diagram of a first conveying device according to an embodiment of the present invention.

[0022] Figure 6 It is a schematic diagram of a welding device and a flux spraying device according to an embodiment of the present invention.

[0023] Figure 7 It is a schematic diagram of an exploded view of a first conveying device according to an embodiment of the present invention.

[0024] Figure 8 It is a bottom view schematically showing a first conveying device according to an embodiment of the present invention.

[0025] Description of the accompanying drawings: 10. Cabinet; 11. First cabinet door; 13. Smoke outlet; 14. Casters; 15. Legs; 16. Display; 17. Circuit board; 18. Inspection door; 20. First conveying device; 21. Conveying track; 22. Conveying wheel; 23. Flange; 24. Stop block; 25. Third cylinder; 210. First limit plate; 211. First latch; 212. First pin hole; 213. First cylinder; 214. Second limit plate; 215. Second pin hole; 216. Second latch; 217. Second cylinder; 220. First mounting bracket; 221. First screw rod; 222. Second servo Servo motor; 223, hand wheel; 30, welding device; 31, flux box; 32, nozzle; 310, flux spraying device; 311, tin furnace; 312, solder head; 313, tin furnace box; 314, first detection camera; 315, second detection camera; 320, first protective cover; 321, protective cover body; 322, side baffle; 323, first air hole; 324, front baffle; 325, mounting frame; 326, handle; 40, moving module; 41, first sliding module; 42, second sliding module; 43, lifting module; 44, connecting hole; 45, second air hole. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0027] Please refer to Figures 1 to 8 As shown, it shows the specific structure of a preferred embodiment of the present invention, which is a small integrated welding machine.

[0028] The tin furnace 311 melts the solder, and the molten solder is spot-welded on the circuit board 17 by the solder head 312. The solder is uniform, the appearance is neat, and the solder quality is guaranteed.

[0029] The present application provides a small integrated welding machine, including a first conveying device 20, which conveys a circuit board. A stop block 24 is arranged on the movement trajectory of the circuit board, and the stop block 24 can stop the circuit board 17; a first protective cover 320 is arranged on the upper side of the first conveying device 20; a welding device 30 and a flux spraying device 310 are arranged on a movable module 40 and are located on the lower side of the first conveying device 20; the flux spraying device 310 includes a flux box 31 and a nozzle 32 arranged in the flux box 31; the nozzle 32 can spray flux onto the circuit board 17; the welding device 30 includes a tin furnace 311, a solder head 312, and a tin furnace box 313; the tin furnace box 313 covers the tin furnace 311, and the solder head 312 is connected to the tin furnace 311; the solder head 312 can move toward the circuit board 17 on the first conveying device 20, and solder the solder on the soldering point of the circuit board 17. The circuit board 17 is fed in from the first conveying device 20, and the circuit board 17 moves to the upper side of the welding device 30 and the flux spraying device 310. The nozzle 32 sprays flux on the circuit board 17, and then the solder head 312 solders the solder spot on the circuit board 17. The tin furnace 311 melts the solder, and the molten solder is pressurized and transported to the hollow solder head 312 through the pipeline and pressure equipment. The solder head 312 squeezes the solder spot and welds it at the welding position. After welding, the solder is uniform, the appearance is neat, and the solder quality is better. The mobile module 40 enables the welding device 30 and the flux spraying device 310 to move in the XYZ direction. The nozzle 32 is in the flux box 31, and the excess flux will fall back into the flux box for reuse, thereby improving the use efficiency. The first conveying device 20, the welding device 30, and the flux spraying device 310 are arranged horizontally, and their structure is more compact, requiring less deployment space. The stop block 24 is driven by the third cylinder 25 to move, and the circuit board is stopped by the stop block 24 when it moves to a preset position, and then the subsequent flux spraying and welding actions are performed.

[0030] Preferably, the first conveying device 20 comprises a conveying track 21, a first limiting plate 210, a second limiting plate 214, and conveying wheels 22. The conveying track 21 is provided with a plurality of conveying wheels 22; the first limiting plate 210 and the second limiting plate 214 are provided on the conveying track 21, the first limiting plate 210 can hold up the edge of the circuit board 17, and the second limiting plate 214 can press the edge of the circuit board 17. The first limiting plate 210 is provided with a bent first pin hole 212, the first latch 211 is provided in the first pin hole 212, and the first limiting plate 210 is connected to the output end of the first cylinder 213; the second limiting plate 214 is provided with a bent second pin hole 215, the second latch 216 is provided in the second pin hole 215, and the second limiting plate 214 is connected to the output end of the second cylinder 217. When the circuit board 17 moves to the first limiting plate 210, the first limiting plate 210 holds up the edge of the circuit board 17, and the second limiting plate 214 presses the edge of the circuit board 17, so that the circuit board 17 is fixed, and then the nozzle 32 sprays flux to the circuit board 17, and the solder head 312 solders the solder on the circuit board 17. The first cylinder 213 drives the first limiting plate 210 to move, and under the cooperation of the first latch 211 and the first pin hole 212, the first limiting plate 210 can hold up the circuit board 17 inside the conveying guide rail. The second cylinder 217 drives the second limiting plate 214 to move, and under the cooperation of the second latch 216 and the second pin hole 215, the second limiting plate 214 presses the edge of the circuit board 17 against the first limiting plate 210. The conveying wheels 22 are meshed with gears, and the first servo motor drives the conveying wheels 22 to rotate.

[0031] Preferably, the conveying track 21 is arranged on the first mounting frame 220, and a first screw rod 221 is arranged between the first mounting frames 220. The first end of the first screw rod 221 is connected to the second servo motor 222, and the second end of the first screw rod 221 is connected to the hand wheel 223. The distance between the two conveying tracks 21 is adjusted by the hand wheel 223 or the second servo motor 222, so that the first conveying device 20 can adapt to circuit boards 17 of different widths.

[0032] Preferably, the conveying wheel 22 has a flange 23, which supports the edge of the circuit board 17. When the first conveying device 20 conveys the circuit board 17, the flange 23 holds up the edge of the circuit board 17, so that when the conveying wheel 22 rotates, the circuit board 17 can move forward or backward.

[0033] The first protective cover 320 includes a mounting frame 325, a protective cover body 231, a side baffle 322, and a front baffle; the protective cover body 231 is hinged on the mounting frame 325, and a handle 326 is provided on the protective cover body 231; the side baffles 322 are arranged on the left and right sides of the mounting frame 325, and the front baffle 324 is arranged on the front side of the mounting frame 325; wherein the side baffles 322 are provided with a long first air hole 323. The first protective cover 320 can reduce the interference of the environment on welding and ensure the quality of welding. The long first air hole 323 is conducive to balancing the air pressure between the cabinet 10 and the first protective cover 320, and ensuring the quality of the spraying flux. The gas flow of the long first air hole 323 will be smoother. Open the inspection door, pull up the handle, and you can observe the welding condition of the circuit board during the production process, which is very convenient to check.

[0034] Preferably, nitrogen is filled between the tin furnace box 313 and the tin furnace 311; a first detection camera 314 is arranged on the side of the solder head, and the first detection camera 314 faces the circuit board 17 and is used to locate the welding position; a second detection camera 315 is arranged on the side of the tin furnace box 313, and the second detection camera 315 faces the circuit board 17 and is used to detect the welding quality. Nitrogen can prevent the influence of external air on the solder and ensure the quality of the solder. The first detection camera 314 and the second detection camera 315 are preferably CCD cameras, and both can detect the welding quality, locate the solder joints, etc.

[0035] Preferably, the mobile module 40 includes a first sliding module 41, a second sliding module 42, and a lifting module 43, wherein the second sliding module 42 is arranged on the first sliding module 41, and the lifting module 43 is arranged on the second sliding module 42; a connecting hole 44 is arranged on the supporting seat of the lifting module 43; a nitrogen pipeline of the tin furnace box 313 passes through the connecting hole 44; and a second air hole 45 is arranged on the box body of the tin furnace box 313. The mobile module 40 is preferably an XYZ module, wherein the first sliding module 41 corresponds to the X module, the second sliding module 42 corresponds to the Y module, and the lifting module 43 corresponds to the Z module. Nitrogen is input into the tin furnace box 313 to protect the solder in the tin furnace 311. The second air hole 45 is used to balance the air pressure of the tin furnace box 313 with the outside world to ensure that nitrogen can be injected into the tin furnace box 313.

[0036] Preferably, the first conveying device 20, the welding device 30, and the flux spraying device 310 are arranged in the cabinet 10, the input port of the cabinet 10 is provided with a first cabinet door 11, and the output port of the cabinet 10 is provided with a second cabinet door; an inspection door is provided on the front of the cabinet, and the handle faces the inspection door. The top of the cabinet 10 is provided with a smoke exhaust port 13, which is connected to the smoke exhaust pipe; the bottom of the cabinet 10 is provided with casters 14 and legs 15; the top of the cabinet 10 is provided with a display 16. The first cabinet door 11 and the second cabinet door are preferably arranged in the cabinet 10 by a sliding module, and the first cabinet door 11 and the second cabinet door are arranged in an upper and lower opening and closing manner, which saves more space. The smoke exhaust pipe exhausts the smoke in the cabinet 10 through a fan, thereby improving production safety. The casters 14 make it easier for the cabinet 10 to move. The legs 15 are used to support the cabinet 10 and provide good support for the cabinet 10. The display 16 is used to display the working status of the machine.

[0037] In summary, the design focus of the present invention is that the tin furnace 311 melts the solder, and the molten solder is spot-welded on the circuit board 17 by the solder head 312. The solder produced by this welding is uniform, has a neat appearance, and has good welding quality. The welding device 30 and the flux spraying device 310 are arranged on the mobile module 40 and are located at the lower side of the first conveying device 20. This design makes the components inside the cabinet 10 very compact, which is conducive to the miniaturization of the equipment.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A small integrated welding machine, characterized in that: comprising a first conveying device; A first protective cover is disposed on the upper side of the first conveying device; The welding device and the flux spraying device are arranged on the moving module and are located at the lower side of the first conveying device; The soldering flux spraying device comprises a soldering flux box and a nozzle arranged in the soldering flux box; the nozzle can spray soldering flux onto the circuit board; The soldering device comprises a tin furnace, a soldering head and a tin furnace box. The tin furnace box covers the tin furnace and the soldering head is connected to the tin furnace. The soldering head can move toward the circuit board on the first conveying device and solder the solder on the soldering points of the circuit board.

2. A small integrated welding machine according to claim 1, characterized in that: The first conveying device includes a conveying track, a first limiting plate, a second limiting plate, and conveying wheels. A plurality of conveying wheels are arranged on the conveying track. The first limiting plate and the second limiting plate are arranged on the conveying track. The first limiting plate can hold up the edge of the circuit board, and the second limiting plate can press the edge of the circuit board.

3. A small integrated welding machine according to claim 2, characterized in that: The first limit plate is provided with a bent first pin hole, the first plug pin is arranged in the first pin hole, and the first limit plate is connected to the output end of the first cylinder; The second limiting plate is provided with a second bent pin hole, the second latch pin is provided in the second pin hole, and the second limiting plate is connected to the output end of the second cylinder.

4. A small integrated welding machine according to claim 2 or 3, characterized in that: The conveying track is arranged on a first mounting frame, and a first screw rod is arranged between the first mounting frames to connect them.

5. A small integrated welding machine according to claim 4, characterized in that: The conveying wheel is provided with a flange which supports the edge of the circuit board.

6. The small integrated welding machine according to claim 1, characterized in that: The first protective cover comprises a protective cover body, side baffles arranged on the left and right side walls of the protective cover body, a rear baffle arranged on the rear wall of the protective cover body, and a cover door arranged on the front wall of the protective cover body; wherein the side baffles are provided with long first air holes.

7. The small integrated welding machine according to claim 1, characterized in that: Nitrogen is filled between the tin furnace box and the tin furnace; a detection camera is arranged on the side of the soldering head, and the detection camera faces the circuit board.

8. A small integrated welding machine according to claim 1 or 7, characterized in that: The movable module includes a first sliding module, a second sliding module and a lifting module. The second sliding module is arranged on the first sliding module, and the lifting module is arranged on the second sliding module. A connecting hole is arranged on the supporting seat of the lifting module. The nitrogen pipeline of the tin furnace box passes through the connecting hole. A second air hole is arranged on the box body of the tin furnace box.

9. The small integrated welding machine according to claim 1, characterized in that: The first conveying device, the welding device, and the flux spraying device are arranged in a cabinet. The input port of the cabinet is provided with a first cabinet door, and the output port of the cabinet is provided with a second cabinet door.

10. A small integrated welding machine according to claim 9, characterized in that: The top of the cabinet is provided with a smoke exhaust port, which is connected to a smoke exhaust pipe; the bottom of the cabinet is provided with casters and legs; and the top of the cabinet is provided with a display.

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