Laser soldering device

Abstract

The utility model provides a laser tin soldering device. The laser tin soldering device comprises a positioning camera, a first light source, a laser transmitter, an air knife lens assembly, a wire feeding mechanism, a moving module and a lifting driving mechanism. The wire feeding mechanism and the positioning camera are located on the two sides of the laser transmitter correspondingly, the first light source is arranged in the shooting direction of the camera, the air knife lens assembly is located on one side of the laser transmitter, a laser path of the laser transmitter penetrates through the air knife lens assembly, the air knife lens assembly can blow out airflow, and tin slag is prevented from falling onto the air knife lens assembly during tin soldering. The wire feeding mechanism is connected with the output end of the lifting driving mechanism, the lifting driving mechanism is connected with the output end of the moving module, and a tin wire sent out by the wire feeding mechanism intersects with the laser path of the laser transmitter. The laser tin soldering device can more quickly position a welding spot needing to be repaired, is high in positioning speed, exquisite in structure, small in size and light in weight, consumes less tin materials compared with wave soldering, and is more environment-friendly and safer.

Description

Technical Field

[0001] The utility model relates to the field of soldering equipment, and particularly relates to a laser soldering device. Background Art

[0002] The PCB circuit board is one of the important components of electronic products. During the manufacturing process of the PCB circuit board, it will pass through a reflow soldering furnace or a wave soldering machine. When the PCB circuit board is batch-processed through the furnace for soldering, some soldering defects will inevitably occur. The equipment for repairing these defects is called selective soldering. In the prior art, selective soldering basically uses the form of wave soldering for repair. The wave soldering flux consumes quickly, the temperature around the soldering furnace is high, the volume of the soldering furnace is large, and the operating speed is slow.

[0003] Therefore, it is necessary to provide a laser soldering device to solve the above technical problems. Summary of the Utility Model

[0004] The utility model provides a laser soldering device to solve the problems in the prior art that when using wave soldering to repair PCB circuit boards, there are problems such as fast consumption of solder flux, high temperature around the soldering furnace, large volume of the soldering furnace, and slow operating speed.

[0005] To solve the above technical problems, the technical solution of the utility model is: a laser soldering device, which includes: a positioning camera, a first light source, a laser emitter, an air knife lens assembly, a wire feeding mechanism, a moving module, and a lifting driving mechanism;

[0006] The wire feeding mechanism and the positioning camera are respectively located on both sides of the laser emitter. The first light source is arranged in the shooting direction of the camera. The air knife lens assembly is located on the side of the laser emitter close to the PCB circuit board. The laser path of the laser emitter passes through the air knife lens assembly. The air knife lens assembly can blow out air flow to prevent solder slag from falling onto the air knife lens assembly during soldering. The wire feeding mechanism is connected to the output end of the lifting driving mechanism. The lifting driving mechanism is connected to the top of the moving module. The solder wire sent out by the wire feeding mechanism intersects with the laser path of the laser emitter.

[0007] In the utility model, the lifting driving mechanism is connected to the moving module through a mounting plate. The mounting plate includes a first plate body and a second plate body connected in an L shape. The first plate body is adjustably connected to the moving module through a first long strip hole. The second plate body extends in a direction away from the moving module. The lifting driving mechanism is fixedly connected to the second plate body.

[0008] Among them, the output end of the lifting drive mechanism and the wire feeding mechanism are connected through a connecting plate and an adjusting plate, the connecting plate is adjustably connected to the output end of the lifting drive mechanism through a second elongated hole, the extension direction of the second elongated hole is perpendicular to the extension direction of the first elongated hole, and the adjusting plate is connected between the connecting plate and the wire feeding mechanism.

[0009] Furthermore, one end of the connecting plate is provided with a connecting end for connecting to the adjusting plate, and the other end of the connecting plate is provided with a reel for winding tin wire, and the connecting end extends obliquely upward, and the adjusting plate is provided with three first connecting holes, and the connecting end is provided with a second connecting hole and arc holes on both sides of the second connecting hole, and the middle first connecting hole is connected to the second connecting hole by screws, and the two first connecting holes at both ends are connected to the two arc holes by screws in a one-to-one correspondence, so that the adjusting plate can rotate around the second connecting hole to adjust the angle.

[0010] Furthermore, the adjustment plate is in an angular shape, and two opposite sides of the adjustment plate are respectively connected to the wire feeding mechanism and the connecting end.

[0011] In the utility model, the wind knife lens assembly includes a fixing frame, a lens and a wind knife block, the lens is arranged in the fixing frame, the wind knife block is arranged on one side of the fixing frame, the side of the wind knife block close to the fixing frame protrudes from the upper surface of the lens, and the side of the wind knife block protruding from the lens is provided with an air outlet, and the side of the wind knife block facing away from the air outlet is provided with an air inlet terminal.

[0012] Furthermore, the fixing frame includes a retaining frame and a fixing plate, the retaining frame is provided with a receiving hole for installing the lens, the fixing plate is fixedly connected to the retaining frame and presses the lens into the receiving hole, and the fixing plate is provided with an avoidance through hole corresponding to the lens.

[0013] In addition, the wind knife block is provided with multiple air outlet holes on the side protruding from the lens, and the side of the wind knife block facing away from the air outlet holes is provided with an intermediate cavity connected to the multiple air outlet holes. The wind knife block is provided with a sealing plate that closes the intermediate cavity, and the air inlet terminal is provided on the sealing plate.

[0014] In the utility model, a monitoring camera is arranged at one side of the laser emitter, and the monitoring camera shoots toward the laser soldering position of the laser emitter, and a second light source is arranged in the shooting direction of the monitoring camera.

[0015] In the utility model, the movable module includes two transverse linear drive components, one longitudinal linear drive component and one vertical linear drive component. The longitudinal linear drive component is connected to the sliding parts of the two transverse linear drive components, the vertical linear drive component is connected to the sliding part of the longitudinal linear drive component, the lifting drive mechanism is connected to the sliding part of the vertical linear drive component, and a motor is connected to the screw transmission of the two transverse linear drive components through a transmission rod.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the laser soldering device of the utility model uses a visual positioning system to identify the Mark points on the PCB circuit board to achieve high-speed and accurate positioning of the solder joints, and uses laser soldering technology to automatically solder after obtaining the coordinates of the bad solder joints, so that the solder joints that need to be repaired can be located more quickly, the positioning speed is fast, the structure is exquisite, the size is small, and the weight is light. Compared with wave soldering, it consumes less tin material, and is more environmentally friendly and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the utility model.

[0018] Figure 1 It is a schematic structural diagram of a preferred embodiment of the laser soldering device of the utility model.

[0019] Figure 2 This is one of the partial structural schematic diagrams of the wire feeding mechanism of the laser soldering device of the present invention.

[0020] Figure 3 This is the second partial structural schematic diagram of the wire feeding mechanism of the laser soldering device of the present invention.

[0021] Figure 4 This is one of the partial structural schematic diagrams of the wind knife lens assembly of the laser soldering device of the present invention.

[0022] Figure 5 This is the second partial structural schematic diagram of the wind knife lens assembly of the laser soldering device of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] The directional terms mentioned in the present utility model, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", "top", and "bottom", etc., are only with reference to the orientation of the attached drawings. The directional terms used are for explaining and understanding the present utility model, rather than limiting the present utility model.

[0025] The terms "first", "second", etc. in the terms of the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying relative importance, nor as a limitation on the sequence.

[0026] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, the connection can be a detachable connection or a connection of an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Basically, the selective soldering in the prior art is repaired by using the form of wave soldering. The wave soldering solder liquid is consumed quickly, the temperature around the soldering furnace is high, the volume of the soldering furnace is large, and the running speed is slow.

[0028] The following is a preferred embodiment of a laser soldering device provided by the present utility model that can solve the above technical problems.

[0029] Please refer to Figure 1 , in which Figure 1 is a schematic structural diagram of a preferred embodiment of the laser soldering device of the present utility model.

[0030] In the figure, the units with similar structures are denoted by the same reference numerals.

[0031] The present utility model provides a laser soldering device, which includes: a positioning camera, a first light source 13, a laser emitter 14, an air knife lens assembly 15, a wire feeding mechanism 17, a moving module, and a lifting driving mechanism 12.

[0032] The wire feeding mechanism 17 and the positioning camera are respectively located on both sides of the laser emitter 14, and the first light source 13 is arranged in the shooting direction of the camera (the positioning camera is located as Figure 1Below the first light source 13, the positioning camera is blocked and not marked. The air knife lens assembly 15 is located on the side of the laser emitter 14 close to the PCB circuit board. The laser path of the laser emitter 14 passes through the air knife lens assembly 15. The air knife lens assembly 15 can blow out air flow to prevent solder dross from falling onto the air knife lens assembly 15 during soldering. The wire feeding mechanism 17 is connected to the output end of the lifting drive mechanism 12. The lifting drive mechanism 12 extends the wire feeding tube of the wire feeding mechanism 17 to a specified position. The lifting drive mechanism 12 is connected to the top of the moving module. The solder wire sent out by the wire feeding mechanism 17 intersects with the laser path of the laser emitter 14.

[0033] The positioning camera can identify the Mark points on the PCB circuit board to achieve high-speed and precise positioning of the solder joints. After obtaining the coordinates of the defective solder joints, the moving module drives the laser emitter 14 to move to the specified position, and at the same time cooperates with the wire feeding mechanism 17 to perform automatic soldering. It can locate the solder joints that need to be repaired faster, with fast positioning speed, delicate structure, small size, light weight. Compared with wave soldering, it consumes less solder material, is more environmentally friendly and safer.

[0034] The laser soldering device in this embodiment performs soldering operations on the PCB circuit board on the conveying line body from bottom to top. The PCB circuit board on the conveying line body does not need to be turned over to perform soldering operations, which improves work efficiency.

[0035] Please refer to Figure 2 , in this embodiment, the lifting drive mechanism 12 is connected to the moving module through the mounting plate 121. The mounting plate 121 includes a first plate body and a second plate body connected in an L shape. The first plate body is adjustably connected to the moving module through the first long strip hole. The second plate body extends in a direction away from the moving module. The lifting drive mechanism 12 is fixedly connected to the second plate body.

[0036] Please refer to in combination Figure 2 and Figure 3 , wherein, between the output end of the lifting drive mechanism 12 and the wire feeding mechanism 17 are connected through the connecting plate 18 and the adjusting plate 19. The connecting plate 18 is adjustably connected to the output end of the lifting drive mechanism 12 through the second long strip hole 181. The extending direction of the second long strip hole 181 is perpendicular to the extending direction of the first long strip hole. The adjusting plate 19 is connected between the connecting plate 18 and the wire feeding mechanism 17 to adjust the installation position of the wire feeding mechanism 17 along two perpendicular directions.

[0037] Please refer to Figure 3 , the wire feeding mechanism 17 specifically includes a stepping motor 171, a driving wheel 172 and a driven wheel 173. The stepping motor 171 drives the driving wheel 172 to rotate. At the same time, the driving wheel 172 and the driven wheel 173 cooperate to drag the solder wire to extend and retract, automatically completing the solder wire feeding operation.

[0038] Please refer to Figure 3In this embodiment, one end of the connecting plate 18 is provided with a connecting end for connecting to the adjusting plate 19, and the other end of the connecting plate 18 is provided with a reel for winding tin wire, and the reel is rotatably mounted on a connecting shaft 184 at one end of the connecting plate 18.

[0039] The connecting end extends obliquely upward, and three first connecting holes 191 are arranged on the adjusting plate 19. The connecting end is provided with a second connecting hole 182 and arc holes 183 located on both sides of the second connecting hole 182. The middle first connecting hole 191 is connected to the second connecting hole 182 by screws, and the two first connecting holes 191 at both ends are connected to the two arc holes 183 by screws in a one-to-one correspondence, so that the adjusting plate 19 can rotate around the second connecting hole 182 to adjust the angle, so that the wire feeding mechanism 17 can accurately feed the tin wire to the soldering position.

[0040] The adjustment plate 19 in this embodiment is prismatic, and the two opposite sides of the adjustment plate 19 are respectively connected to the wire feeding mechanism 17 and the connection end, and the structure is exquisite and compact.

[0041] Please refer to Figure 4 and Figure 5 In this embodiment, the wind knife lens assembly 15 includes a fixing frame, a lens 153 and a wind knife block 154. The lens 153 is arranged in the fixing frame, and the lens 153 can protect the laser emitter 14 from being damaged. The wind knife block 154 is arranged on one side of the fixing frame, and the side of the wind knife block 154 close to the fixing frame protrudes from the upper surface of the lens 153, and the side of the wind knife block 154 protruding from the lens 153 is provided with an air outlet 1542, and the side of the wind knife block 154 away from the air outlet 1542 is provided with an air inlet terminal 155.

[0042] More specifically, the fixing frame includes a retaining frame 151 and a fixing plate 152. The retaining frame 151 is provided with a receiving hole for installing the lens 153. The fixing plate 152 is fixedly connected to the retaining frame 151 and presses the lens 153 into the receiving hole. The fixing plate 152 is provided with an avoidance through hole corresponding to the lens 153.

[0043] In addition, the side of the wind knife block 154 protruding from the lens 153 is provided with a plurality of air outlet holes 1542. The airflow blown out by the air outlet holes 1542 can prevent tin slag from falling onto the lens 153. The side of the wind knife block 154 facing away from the air outlet holes 1542 is provided with an intermediate cavity connected to the plurality of air outlet holes 1542. The wind knife block 154 is provided with a sealing plate 1541 that closes the intermediate cavity, and the air inlet terminal 155 is provided on the sealing plate 1541.

[0044] In this embodiment, a monitoring camera is provided on one side of the laser emitter 14, and the monitoring camera shoots toward the laser soldering position of the laser emitter 14, and a second light source 16 is provided in the shooting direction of the monitoring camera. The monitoring camera can transmit the real-time picture of laser welding to the monitoring screen connected to the laser soldering device.

[0045] Please refer to Figure 1 In this embodiment, the mobile module includes two transverse linear drive components 111, a longitudinal linear drive component 112 and a vertical linear drive component 113. The longitudinal linear drive component 112 is connected to the sliding parts of the two transverse linear drive components 111, and the vertical linear drive component 113 is connected to the sliding part of the longitudinal linear drive component 112. That is, the mobile module can realize the linear movement of the laser emitter 14 and other components in three directions of XYZ. A motor 114 is connected to the lead screw of the two transverse linear drive components 111 through a transmission rod 115. The linear movement drive is stable and low in cost. Gears and other structures can be correspondingly set on the transmission rod 115 and the two transverse linear drive components 111 for transmission.

[0046] When the laser soldering device of the utility model is working: the tin wire sent out by the wire feeding mechanism 17 can be just aligned with the laser focus of the laser emitter 14. When the PCB circuit board flows to the top of the laser soldering device, the positioning camera can identify the Mark point on the PCB circuit board, locate the position of the PCB circuit board, and the moving module drives the laser emitter 14 and the wire feeding mechanism 17 and other components to move to the bottom of the bad solder joint. The lifting drive mechanism 12 extends the wire feeding tube of the wire feeding mechanism 17 to the specified position, the laser emitter 14 first turns on the laser for a short time preheating, and the wire feeding mechanism 17 then drives the tin wire to extend to perform the soldering operation.

[0047] The laser soldering device of this preferred embodiment uses a visual positioning system to identify the mark points on the PCB circuit board to achieve high-speed and accurate positioning of solder joints. It uses laser soldering technology to automatically solder after obtaining the coordinates of defective solder joints, and can locate the solder joints that need to be repaired more quickly. It has a fast positioning speed, a compact structure, a small size, and a light weight. Compared with wave soldering, it consumes less tin and is more environmentally friendly and safer.

[0048] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A laser soldering device, characterized in that, include: Positioning camera, first light source, laser transmitter, wind knife lens assembly, wire feeding mechanism, moving module, and lifting drive mechanism; The wire feeding mechanism and the positioning camera are respectively located on both sides of the laser transmitter, the first light source is arranged in the shooting direction of the camera, the wind knife lens assembly is located on the side of the laser transmitter close to the PCB circuit board, the laser path of the laser transmitter passes through the wind knife lens assembly, the wind knife lens assembly can blow out airflow to prevent tin slag from falling onto the wind knife lens assembly during soldering, the wire feeding mechanism is connected to the output end of the lifting drive mechanism, the lifting drive mechanism is connected to the top of the mobile module, and the tin wire sent out by the wire feeding mechanism intersects with the laser path of the laser transmitter.

2. The laser soldering device according to claim 1, characterized in that, The lifting drive mechanism is connected to the movable module via a mounting plate, the mounting plate comprises a first plate body and a second plate body connected in an L-shape, the first plate body is adjustably connected to the movable module via a first elongated hole, the second plate body extends in a direction away from the movable module, and the lifting drive mechanism is fixedly connected to the second plate body.

3. The laser soldering device according to claim 2, characterized in that, The output end of the lifting drive mechanism is connected to the wire feeding mechanism via a connecting plate and an adjusting plate. The connecting plate is adjustably connected to the output end of the lifting drive mechanism via a second elongated hole. The extension direction of the second elongated hole is perpendicular to the extension direction of the first elongated hole. The adjusting plate is connected between the connecting plate and the wire feeding mechanism.

4. The laser soldering device according to claim 3, wherein One end of the connecting plate is provided with a connecting end for connecting with the adjusting plate, and the other end of the connecting plate is provided with a reel for winding tin wire, and the connecting end extends obliquely upward, and three first connecting holes are provided on the adjusting plate, and the connecting end is provided with a second connecting hole and arc holes on both sides of the second connecting hole, and the middle first connecting hole is connected to the second connecting hole by screws, and the two first connecting holes at both ends are connected to the two arc holes by screws in a one-to-one correspondence, so that the adjusting plate can rotate around the second connecting hole to adjust the angle.

5. The laser soldering device according to claim 4, characterized in that, The adjusting plate is in the shape of an ridge, and two opposite sides of the adjusting plate are respectively connected to the wire feeding mechanism and the connecting end.

6. The laser soldering device according to claim 1, wherein The wind knife lens assembly includes a fixing frame, a lens and a wind knife block, the lens is arranged in the fixing frame, the wind knife block is arranged on one side of the fixing frame, the side of the wind knife block close to the fixing frame protrudes from the upper surface of the lens, and the side of the wind knife block protruding from the lens is provided with an air outlet, and the side of the wind knife block facing away from the air outlet is provided with an air inlet terminal.

7. The laser soldering device according to claim 6, wherein, The fixing frame includes a retaining frame and a fixing plate. The retaining frame is provided with a receiving hole for installing the lens. The fixing plate is fixedly connected to the retaining frame and presses the lens into the receiving hole. The fixing plate is provided with a avoiding through hole corresponding to the lens.

8. The laser soldering device according to claim 6, wherein The wind knife block is protruding from the side of the lens and is provided with multiple air outlet holes. The side of the wind knife block facing away from the air outlet holes is provided with an intermediate cavity connected to the multiple air outlet holes. The wind knife block is provided with a sealing plate that closes the intermediate cavity, and the air inlet terminal is provided on the sealing plate.

9. The laser soldering device according to claim 1, characterized in that, A monitoring camera is arranged at one side of the laser emitter, and the monitoring camera shoots toward the laser soldering position of the laser emitter. A second light source is arranged in the shooting direction of the monitoring camera.

10. The laser soldering device according to claim 1, characterized in that, The movable module includes two transverse linear drive components, one longitudinal linear drive component and one vertical linear drive component. The longitudinal linear drive component is connected to the sliding parts of the two transverse linear drive components, the vertical linear drive component is connected to the sliding part of the longitudinal linear drive component, the lifting drive mechanism is connected to the sliding part of the vertical linear drive component, and a motor is connected to the screw transmission of the two transverse linear drive components through a transmission rod.

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