Automatic welding device for PCB (Printed Circuit Board)

Abstract

The invention discloses an automatic PCB welding device, and relates to the technical field of PCB welding, the automatic PCB welding device comprises a welding table, and further comprises a transmission unit arranged on one side of the welding table; the discharging unit is arranged on the other side of the welding table; the conveying unit comprises a feeding table, a welding table, a conveying unit, a conveying unit and a control unit, and the feeding table is arranged on one side of the welding table; the two groups of feeding conveying belts are symmetrically arranged on the feeding table, and placing plates are uniformly arranged on the feeding conveying belts; the multiple placing assemblies are arranged between the two sets of feeding conveying belts and clamped on the placing plates, through the conveying units and the discharging units, line production of PCBs in the welding process can be achieved, so that the working efficiency is improved, in addition, through arrangement of the placing assemblies, PCBs of different sizes and models can be fixed, and the welding quality of the PCBs is improved. And meanwhile, the PCB can be stably fixed in the wave soldering process, so that missing soldering and continuous tin soldering caused by deviation of the PCB in the soldering process are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board welding, and in particular to an automatic welding device for a PCB board. Background Art

[0002] With the rapid development of the electronics manufacturing industry, the production efficiency and product quality of printed circuit boards (PCBs), as the core components of electronic products, have a crucial impact on the overall product performance. Traditional manual welding methods have problems such as unstable welding quality, low efficiency, and high cost, and can no longer meet the needs of large-scale, high-precision, and high-efficiency production.

[0003] The above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are the closest prior art. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic soldering device for PCB boards to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: an automatic soldering device for PCB boards, comprising a soldering station, and further comprising:

[0005] A transmission unit, arranged at one side of the soldering station, for transmitting the PCB board to the soldering station;

[0006] A material unloading unit is arranged at the other side of the welding table and is used for unloading and transferring the PCB board after welding;

[0007] Wherein, the transmission unit comprises:

[0008] A loading platform, arranged on one side of the welding platform;

[0009] Two groups of feeding conveyor belts are symmetrically arranged on the feeding platform, and placement plates are evenly arranged on the feeding conveyor belts;

[0010] A plurality of placement components are arranged between the two groups of feeding conveyor belts and clamped on the placement plate to fix the PCB board to be welded.

[0011] Preferably, the placement component comprises:

[0012] A placement frame is placed on the placement board, and the middle of the placement frame is hollowed out;

[0013] A clamping member, arranged on the placement frame, used for clamping the placement frame on the placement plate of the feeding conveyor belt;

[0014] The fixing piece is arranged on the placement frame and is used for fixing the PCB board placed in the placement frame.

[0015] Preferably, the fixing member comprises:

[0016] Four sets of fixing plates are slidably arranged at the hollowed-out parts of the placement frame;

[0017] Four groups of limiting plates are arranged on the fixing plate, and the platform formed by the four groups of limiting plates and the front section of the fixing plate is used to place the PCB board;

[0018] Four groups of first electric telescopic rods are arranged on the placement frame and are used to drive the fixing plate to slide on the placement frame;

[0019] The pressing part is arranged on the fixing plate and is used for fixing and pressing the PCB board placed on the fixing plate.

[0020] Preferably, the connecting edges of two adjacent fixing plates are arranged obliquely, and the connecting edges are arranged parallelly.

[0021] Preferably, the pressing portion comprises a pressing plate obliquely and slidably arranged on the limiting plate, and the fixing plate is provided with a second electric telescopic rod for driving the pressing plate to slide forward and backward.

[0022] Preferably, the engaging member comprises:

[0023] Two sets of fixing blocks are arranged at the lower end of the placement frame;

[0024] The clamping blocks are symmetrically arranged on both sides of the fixing block and are slidably arranged on both sides of the fixing block, and the clamping blocks are arranged in an inverted triangle shape;

[0025] The locking spring is arranged on the fixing block and is used for providing elastic power for resetting the locking block.

[0026] Preferably, the unloading unit comprises:

[0027] The unloading conveyor belt is connected to the welding table and is used to receive the PCB board placed in the placement frame from the loading conveyor belt after welding;

[0028] The transport component is arranged between the welding table and the unloading conveyor belt, and is used to transport the placement frame back to its original position after the PCB board falls from the hollow part of the placement frame to the unloading conveyor belt.

[0029] Preferably, the transport assembly comprises:

[0030] Two sets of flipping and disengaging parts are arranged between the welding table and the unloading conveyor belt, and are used to drive the placement frame to flip and the PCB board to be disengaged;

[0031] The receiving and transporting piece is arranged on the welding table and the loading table, and is used for receiving the placement frame that has been flipped and separated from the flipped position, and transporting it back to the initial position.

[0032] Preferably, the flip-away member comprises:

[0033] The flip axis is arranged on the side of the transport direction of the placement frame;

[0034] A rotating rod is arranged between the welding table and the unloading conveyor belt, and one end of the rotating rod is rotatably arranged on the welding table through a rotating shaft, and the other end of the rotating rod is rotatably arranged with a limited rotating plate;

[0035] A first gear is arranged on the rotating shaft of the rotating rod, and a rotating motor is arranged on the rotating shaft to drive the rotating shaft to rotate;

[0036] A second gear meshing with the first gear;

[0037] A rack is slidably disposed on the welding table and meshed with the second gear;

[0038] The abutment plate is arranged between the two racks and is used for abutting and limiting when the placement frame rotates.

[0039] Preferably, the undertaking of transporting parts includes:

[0040] Two sets of symmetrically arranged receiving conveyor belts are mounted on the welding table and the feeding material;

[0041] A plurality of hook-shaped plates are rotatably arranged on the receiving conveyor belt, and the end of the receiving conveyor belt is flush with the placement frame in a vertical state.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The present invention can realize the assembly line operation of PCB boards during welding through the transmission unit and the unloading unit, thereby improving the operation efficiency. In addition, the arrangement of placing components can realize the fixation of PCB boards of different sizes and models, and at the same time realize the stable fixation of PCB boards during the wave soldering process, thereby reducing the occurrence of empty soldering and bridging soldering caused by the deviation of PCB boards during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0045] Figure 2 This is another overall structural diagram of the present invention from another perspective;

[0046] Figure 3 This is a screenshot of the blanking unit of the present invention;

[0047] Figure 4 It is a front cross-sectional view of the blanking unit of the present invention;

[0048] Figure 5 This is the overall structure diagram of the placement frame of the present invention;

[0049] Figure 6 The side view of the frame of the present invention

[0050] Figure 7 for Figure 1 Enlarged view of point A in the middle;

[0051] Figure 8 for Figure 3 Enlarged view of point B in the middle;

[0052] Fig. 9 for Figure 3 Enlarged view of point C in the middle;

[0053] Fig.10 for Figure 6 Enlarged view of point D in the middle.

[0054] 1-welding table; 2-unloading unit; 21-unloading conveyor belt; 22-flipping and disengaging member; 221-flipping axis; 222-rotating rod; 223-limiting rotating plate; 224-limiting bar; 225-first gear; 226-second gear; 227-rack; 228-abutment plate; 23-transport receiving member; 231-transport receiving belt; 232-hook plate; 3-loading table; 4-loading conveyor belt; 5-placing assembly; 51-placing frame; 52-clamping member; 521-fixing block; 522-clamping block; 523-clamping spring; 53-fixing member; 531-fixing plate; 532-limiting plate; 533-limiting plate; 534-pressing part; 5341-pressing plate; 5342-second electric telescopic rod; 6-placing plate. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] See also Figure 1-10 The present invention provides a technical solution: a PCB board automatic welding device, including a welding table 1, and also including:

[0057] A transmission unit, arranged at one side of the soldering station 1, for transmitting the PCB board to the soldering station 1;

[0058] A material unloading unit 2 is arranged at the other side of the welding table 1 and is used for unloading and transporting the PCB board after welding;

[0059] Wherein, the transmission unit comprises:

[0060] A loading platform 3 is arranged on one side of the welding platform 1;

[0061] Two groups of feeding conveyor belts 4 are symmetrically arranged on the feeding platform 3, and placement plates 6 are evenly arranged on the feeding conveyor belts 4;

[0062] A plurality of placement components 5 are arranged between the two groups of the feeding conveyor belts 4 and clamped on the placement plate 6 for fixing the PCB board to be welded.

[0063] Wherein, the placement component 5 comprises:

[0064] A placement frame 51 is placed on the placement plate 6, and the middle portion of the placement frame 51 is hollowed out;

[0065] The clamping member 52 is provided on the placement frame 51 and is used to clamp the placement frame 51 on the placement plate 6 of the feeding conveyor belt 4;

[0066] The fixing member 53 is disposed on the placement frame 51 and is used to fix the PCB board placed in the placement frame 51 .

[0067] In addition, the fixing member 53 includes:

[0068] Four sets of fixing plates 531 are slidably arranged at the hollowed-out parts of the placing frame 51;

[0069] Four groups of limiting plates 532 are arranged on the fixing plate 531. The platform formed by the four groups of limiting plates 532 and the front section of the fixing plate 531 is used to place the PCB board;

[0070] Four sets of first electric telescopic rods 533 are arranged on the placement frame 51 and are used to drive the fixing plate 531 to slide on the placement frame 51;

[0071] The pressing portion 534 is disposed on the fixing plate 531 and is used to fix and press the PCB board placed on the fixing plate 531;

[0072] When the PCB board is placed, the first electric telescopic rod 533 will pull the fixing plate 531 outward, so that the space formed by the limiting plate 532 is slightly larger than the PCB board, and then the PCB board is placed on the platform formed by the front end of the limiting plate 532 and the fixing plate 531, and then the first electric telescopic rod 533 will push the fixing plate 531 to make the limiting plate 532 fit the PCB board. This setting can adapt to the placement and preliminary fixation of PCB boards of different sizes. After the preliminary fixation, the pressing part 534 will press and fix the placed PCB board downward, thereby preventing the impact of wave soldering on the PCB board during soldering from causing the PCB board to deviate, resulting in leaky soldering and empty soldering.

[0073] At the same time, the connecting edges of the two adjacent fixing plates 531 are inclined and parallel. In actual settings, the inclined edges are set to forty-five degrees to better connect and cooperate with the platform for placing PCB boards formed by the adjacent fixing plates 531, thereby accommodating the placement of PCB boards of different sizes.

[0074] In addition, the holding portion 534 includes a holding plate 5341 that is obliquely and slidably arranged on the limiting plate 532, and a second electric telescopic rod 5342 that is used to drive the holding plate 5341 to slide forward and backward is arranged on the fixing plate 531;

[0075] When the PCB board is placed and pressed, the inclined pressing plate 5341 can better press and fix the PCB boards with different thicknesses.

[0076] At the same time, the engaging member 52 includes:

[0077] Two sets of fixing blocks 521 are arranged at the lower end of the placing frame 51;

[0078] The clamping blocks 522 are symmetrically arranged on both sides of the fixing block 521 and are slidably arranged on both sides of the fixing block 521. The clamping blocks 522 are arranged in an inverted triangle shape;

[0079] A locking spring 523 is provided on the fixing block 521 and is used to provide elastic power for the locking block 522 to return to its original position;

[0080] The components on the PCB board are placed on the PCB board through pins. After the PCB board is placed in the placement frame 51 and fixed, the fixing block 521 is inserted between two adjacent placement plates 6 and fixed by the clamping block 522, so that the placement frame 51 can be stably placed on the placement plate 6 between the two groups of feeding conveyor belts 4, and then the two groups of feeding conveyor belts 4 work to drive the placement frame 51 to move toward the welding table 1, and then the welding table 1 will solder the PCB board from the hollow part of the placement frame 51 from below. After the soldering is completed, the feeding conveyor belt 4 continues to move toward the lower feeding unit 2. When it moves to the end of the feeding conveyor belt 4, due to the setting of the feeding method, the placement plate 6 will move to the other side in a circular motion at the end of the feeding conveyor belt 4, so that at the end of the feeding conveyor belt 4, the clamping block 522 will automatically detach from the placement plate 6 and move to the lower feeding unit 2, and then after the placement frame 51 moves to the lower feeding unit 2, the fixing member 53 will release the fixation of the PCB board, and then the hollow part of the placement plate 6 falls into the lower feeding unit 2.

[0081] Wherein, the unloading unit 2 comprises:

[0082] The unloading conveyor belt 21 is connected to the welding table 1 and is used to receive the PCB board placed in the placement frame 51 after being transferred from the loading conveyor belt 4 after welding;

[0083] The transport component is arranged between the welding table 1 and the unloading conveyor belt 21, and is used to transport the placement frame 51 back to its original position after the PCB board falls from the hollow part of the placement frame 51 to the unloading conveyor belt 21.

[0084] In addition, the transport assembly comprises:

[0085] Two groups of flipping and disengaging parts 22 are arranged between the welding table 1 and the unloading conveyor belt 21, and are used to drive the placement frame 51 to flip and the PCB board to be disengaged;

[0086] The receiving and transporting member 23 is arranged on the welding table 1 and the loading table 3, and is used to receive the placement frame 51 that has been flipped and detached, and transport it back to the initial position, thereby saving the inconvenience of manual detachment and taking it back, thereby saving manpower.

[0087] At the same time, the flip-out disengagement member 22 comprises:

[0088] The turning shaft 221 is arranged on one side of the placing frame 51 in the transport direction;

[0089] The rotating rod 222 is arranged between the welding table 1 and the unloading conveyor belt 21, and one end is rotatably arranged on the welding table 1 through a rotating shaft at the position, and a limited rotating plate 223 is rotatably arranged at the other end, wherein a torsion spring is arranged at the rotating position of the limited rotating plate 223, which is used for the limited rotating plate 223 to rotate and reset, and a limited strip 224 is arranged at the rotating lower end to limit the rotation angle of the limited rotating plate 223, so that it can be in a vertical state with the cooperation of the torsion spring. On the one hand, this arrangement can limit the flip shaft 221 to stably flip the placement frame 51, and at the same time cooperate with the receiving and transporting member 23 to be separated;

[0090] At the same time, the placement frame 51 is Figure 4 The direction will be flipped, which can avoid motion interference between the placement frame 51 and the PCB board during flipping;

[0091] The first gear 225 is arranged on the rotating shaft of the rotating rod 222, and a rotating motor driving the rotating shaft to rotate is arranged on the rotating shaft, and the rotating motor is fixedly arranged on the welding table 1;

[0092] The second gear 226 is meshed with the first gear 225;

[0093] The rack 227 is slidably disposed on the welding table 1 and meshed with the second gear 226;

[0094] An abutment plate 228 is disposed between the two racks 227 and is used for abutting and limiting the placement frame 51 when the placement frame 51 rotates;

[0095] When the placement frame 51 falls into the unloading conveyor belt 21 through the loading conveyor belt 4, when its flip shaft 221 contacts the limit rotating plate 223 at the end of the rotating rod 222, the rotating motor starts to work and drives the rotating rod 222 to rotate. At the same time, under the action of the first gear 225, the second gear 226 and the rack 227, the abutment plate 228 moves up to serve as an abutment force for the rotation of the placement frame 51 until the placement frame 51 is rotated to a vertical state;

[0096] Among them, the rack 227 can also serve as a limit piece when the placement frame 51 is transferred from the loading conveyor belt 4 to the lower material conveyor belt 21. At the same time, the upper surface of the abutment plate 228 will be initially in a position parallel to the horizontal plane of the welding table 1 to facilitate motion interference with the placement frame 51. After the placement frame 51 completes the movement and passes over the abutment plate 228, the flip axis 221 will contact the abutment plate 228.

[0097] Finally, the receiving and transporting part 23 includes:

[0098] Two sets of symmetrically arranged receiving conveyor belts 231 are mounted on the welding table 1 and the loading material;

[0099] A plurality of hook-shaped plates 232 are rotatably disposed on the receiving conveyor belt 231, and the end of the receiving conveyor belt 231 is flush with the placement frame 51 in a vertical state;

[0100] When the placement frame 51 is flipped and is in a vertical state, the hook plate 232 moving on the receiving conveyor belt 231 will hook the flip shaft 221 when it moves from bottom to top at the end of the receiving conveyor belt 231, thereby driving the placement frame 51 to move downward, breaking away from the limit of the limit rotating plate 223, and then continuing to lift the placement frame 51, and then move to the side of the upper material table 3.

Claims

1. A PCB board automated soldering device, comprising a soldering station (1), characterized in that: Also includes: A transmission unit, arranged on one side of the soldering station (1), and used for transmitting a PCB board to the soldering station (1); A material unloading unit (2), arranged on the other side of the welding platform (1), is used for unloading and transporting the PCB board after welding; Wherein, the transmission unit comprises: A loading platform (3) is arranged on one side of the welding platform (1); Two groups of feeding conveyor belts (4) are symmetrically arranged on the feeding platform (3), and placement plates (6) are evenly arranged on the feeding conveyor belts (4); A plurality of placement components (5) are arranged between the two groups of the feeding conveyor belts (4) and clamped on the placement plate (6) for fixing the PCB board to be welded.

2. The PCB board automatic welding device according to claim 1, characterized in that: The placement component (5) comprises: A placement frame (51) is placed on the placement plate (6), and the middle portion of the placement frame (51) is hollowed out; A clamping member (52) is arranged on the placement frame (51) and is used to clamp the placement frame (51) onto the placement plate (6) of the feeding conveyor belt (4); A fixing member (53) is arranged on the placement frame (51) and is used to fix the PCB board placed in the placement frame (51).

3. The PCB board automatic welding device according to claim 2, characterized in that: The fixing member (53) comprises: Four sets of fixing plates (531) are slidably arranged at the hollowed-out parts of the placement frame (51); Four groups of limiting plates (532) are arranged on the fixing plate (531), and the platform formed by the four groups of limiting plates (532) and the front section of the fixing plate (531) is used to place the PCB board; Four groups of first electric telescopic rods (533) are arranged on the placement frame (51) and are used to drive the fixing plate (531) to slide on the placement frame (51); The pressing portion (534) is arranged on the fixing plate (531) and is used to fix and press the PCB board placed on the fixing plate (531).

4. The PCB board automatic welding device according to claim 3, characterized in that: The connecting edges of two adjacent fixing plates (531) are arranged obliquely, and the connecting edges are arranged in parallel.

5. The PCB board automatic welding device according to claim 3, characterized in that: The holding portion (534) comprises a holding plate (5341) arranged to slide obliquely on the limiting plate (532), and a second electric telescopic rod (5342) for driving the holding plate (5341) to slide forward and backward is arranged on the fixing plate (531).

6. The PCB board automatic welding device according to claim 2, characterized in that: The engaging member (52) comprises: Two groups of fixing blocks (521) are arranged at the lower end of the placement frame (51); The clamping blocks (522) are symmetrically arranged on both sides of the fixing block (521) and are slidably arranged on both sides of the fixing block (521); the clamping blocks (522) are arranged in an inverted triangle shape; The locking spring (523) is arranged on the fixing block (521) and is used to provide elastic power for returning the locking block (522) to its original position.

7. The PCB board automatic welding device according to claim 2, characterized in that: The unloading unit (2) comprises: A material unloading conveyor belt (21) is connected to the welding platform (1) and is used to receive the PCB board placed in the placement frame (51) after being transferred from the material loading conveyor belt (4) after welding; A transport component is arranged between the welding table (1) and the unloading conveyor belt (21), and is used to transport the placement frame (51) back to its original position after the PCB board falls from the hollow portion of the placement frame (51) to the unloading conveyor belt (21).

8. The PCB board automatic welding device according to claim 7, characterized in that: The transport assembly comprises: Two groups of flipping and disengaging parts (22) are arranged between the welding table (1) and the unloading conveyor belt (21) and are used to drive the placement frame (51) to flip and the PCB board to disengage; The receiving and transporting member (23) is arranged on the welding platform (1) and the loading platform (3) and is used to receive the placement frame (51) that has been flipped and separated from the flipped position and transport it back to the initial position.

9. The PCB board automatic welding device according to claim 8, characterized in that: The flip-out disengagement member (22) comprises: A turning shaft (221) is arranged on one side of the placing frame (51) in the transport direction; A rotating rod (222) is arranged between the welding table (1) and the unloading conveyor belt (21), and one end of the rotating rod is rotatably arranged on the welding table (1) via a rotating shaft, and the other end of the rotating rod is rotatably arranged with a limited rotating plate (223); A first gear (225) is arranged on the rotating shaft of the rotating rod (222), and a rotating motor is arranged on the rotating shaft to drive the rotating shaft to rotate; A second gear (226) is meshed with the first gear (225); A rack (227) is slidably disposed on the welding table (1) and meshed with the second gear (226); The abutment plate (228) is arranged between the two racks (227) and is used for abutting and limiting the position when the placement frame (51) rotates.

10. The PCB board automatic welding device according to claim 9, characterized in that: The transport receiving part (23) comprises: Two sets of symmetrically arranged receiving conveyor belts (231) are mounted on the welding table (1) and the feeder; A plurality of hook-shaped plates (232) are rotatably arranged on the receiving conveyor belt (231), and an end of the receiving conveyor belt (231) is flush with the placement frame (51) in a vertical state.

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