Circuit board cleaning device

Abstract

The utility model relates to the field of circuit board processing, in particular to a circuit board cleaning device which comprises a machine frame, two conveying shafts are arranged on the machine frame, the conveying shafts are driven by a conveying motor to rotate, the two conveying shafts are connected in a winding mode through a conveying belt, and a sliding rod and a lead screw are arranged on the machine frame above the conveying belt. The lead screw is driven by a scraping motor to rotate, a sliding plate is further arranged above the conveying belt, the lead screw penetrates through the sliding plate and is in threaded connection with the sliding plate, the sliding rod penetrates through the sliding plate and is in sliding connection with the sliding plate, a plurality of lifting air cylinders are further fixed to the sliding plate, and the tail ends of piston rods of the lifting air cylinders are all fixed to a mounting plate. A scraper is fixed to the bottom of the mounting plate, turnover shafts are arranged on the portions, on the two sides of the tail end of the conveying belt, of the rack, connecting blocks are fixed to the tail ends of the turnover shafts, and a U-shaped fixing groove is fixed between the two connecting blocks. According to the device, the two end faces of the circuit board can be automatically subjected to glue scraping operation, and the production efficiency of the circuit board is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit board processing, in particular to a circuit board cleaning device.

Background Art

[0002] A circuit board can be called a printed circuit board or a printed wiring board, also known as a PCB or an FPC circuit board. The circuit board miniaturizes and visualizes the circuit, and plays an important role in the mass production of fixed circuits and the optimization of the layout of electrical appliances. In the manufacturing process of the circuit board, a layer of copper foil needs to be adhered to the glass epoxy substrate or copper electroplating needs to be carried out to form a circuit or a conductive layer. During the process of copper electroplating or adhering the copper foil, a protective film needs to be adhered to the glass epoxy substrate to protect the parts that do not need to be processed. After the processing is completed, the protective film needs to be removed. Patent Application No.: CN202023312439.8 discloses a circuit board glue scraping and cleaning device, including an operating table. At both ends of the top of the operating table, vertical plates are fixedly connected. A limiting rod is fixedly connected between the two vertical plates, and the limiting rod is composed of two symmetric parts. A moving seat is arranged on the outer surface of the two limiting rods. A fixed clamp is sleeved on the outer surface of the moving seat. A scraper seat is arranged at the bottom of the fixed clamp. A scraper is embedded at the bottom of the scraper seat. An arc-shaped discharge surface and an inclined scraping surface are arranged on the outer surface of one end of the scraper, and both the arc-shaped discharge surface and the inclined scraping surface are composed of two symmetric parts. A first slot is arranged on the top of the operating table, and a fixing plate is arranged inside the first slot. When using the circuit board glue scraping and cleaning device, first place the circuit board on the fixing plate so that the circuit board can be closely attached to the scraper. Then turn on the motor, the motor can drive the threaded rod to rotate, the threaded rod can drive the moving seat to move, and the moving seat can drive the scraper to move, so that the scraper scrapes the glue on the surface of the circuit board, realizing the glue scraping operation of the circuit board. However, such a device can only scrape the glue on one side of the circuit board and cannot scrape the glue on both sides of the circuit board. After scraping the glue on one side of the circuit board, it is necessary to manually remove the circuit board, turn it over and re-place and fix the circuit board, which greatly affects the production efficiency of the circuit board.

[0003] The present utility model is studied and proposed in view of the deficiencies of the prior art.

Content of the Utility Model

[0004] The purpose of the present utility model is to overcome the above-mentioned deficiencies of the prior art and provide a circuit board cleaning device.

[0005] The present utility model can be realized by the following technical solutions:

[0006] The utility model discloses a circuit board cleaning device, which comprises a frame. Two conveying shafts are arranged on the frame. The conveying shafts are driven to rotate by a conveying motor. The two conveying shafts are wound by a conveyor belt. A sliding rod and a lead screw are arranged on the frame above the conveyor belt. The lead screw is driven to rotate by a scraping motor. A sliding plate is also arranged above the conveyor belt. The lead screw passes through the sliding plate and is in threaded connection with the sliding plate. The sliding rod passes through the sliding plate and is in sliding connection with the sliding plate. A plurality of lifting cylinders are fixed on the sliding plate. The ends of the piston rods of the lifting cylinders are all fixed to a mounting plate. A scraping plate is fixed to the bottom of the mounting plate. Rotating shafts are arranged on the frame on both sides of the end of the conveyor belt. Connecting blocks are fixed to the ends of the rotating shafts. A U-shaped fixing groove is fixed between the two connecting blocks. One of the rotating shafts is fixed to the output end of a flipping motor. A plurality of rotating shafts are also arranged on the frame. Rotary rollers are fixed on the rotating shafts. The rotary rollers are driven to rotate by a rotary motor. Place the circuit board to be scraped with glue on the conveyor belt. Drive the conveyor belt to rotate by the conveying motor. The circuit board moves to below the scraping plate as the conveyor belt rotates. The conveying motor stops. The lifting cylinders are started. The piston rods on the lifting cylinders extend. The scraping plate descends. After the scraping plate contacts the upper end of the circuit board, drive the lead screw to rotate by the scraping motor. Since the lead screw passes through the sliding plate and is in threaded connection with the sliding plate, when the lead screw rotates, the scraping plate moves on the upper end of the circuit board. Scrape the glue on the upper end of the circuit board through the scraping plate. The scraping plate moves from one end of the circuit board to the other end to scrape the glue on the upper end of the circuit board. After the glue is scraped off, the lifting cylinders are started. The piston rods on the lifting cylinders shorten. The scraping plate rises. After the scraping plate is separated from the circuit board, drive the conveyor belt to rotate by the conveying motor. The circuit board moves with the conveyor belt. After one end of the circuit board is inserted into the fixing groove, the flipping motor is started. The flipping motor drives the rotating shaft to rotate. After the rotating shaft rotates 180 degrees, it reaches each rotary roller. Drive the rotary roller to rotate by the rotary motor. The circuit board moves with the rotary roller. After the circuit board is separated from the fixing groove, drive the rotating shaft to rotate 90 degrees again by the flipping motor. The fixing groove reaches below the circuit board. Drive the rotary roller to rotate in the reverse direction by the rotary motor. The circuit board moves towards the conveyor belt. After the circuit board moves onto the conveyor belt, scrape the glue on the other end of the circuit board again through the scraping plate. This device can realize scraping and cleaning of the circuit board. After the glue on one end face of the circuit board is cleaned, the circuit board is automatically flipped 180 degrees. After the circuit board is flipped, scrape the glue on the other end face of the circuit board again. It can realize automatic scraping of the glue on both end faces of the circuit board, greatly improving the production efficiency of the circuit board.

[0007] Preferably, one of the rotating shafts is fixed to the rotary motor. Synchronous wheels are fixed to the ends of the rotating shafts. The synchronous wheels are wound by a synchronous belt.

[0008] Preferably, a plurality of support shafts are further fixed on the frame below the squeegee. Support rollers are arranged on the support shafts, and the support rollers are arranged inside the conveyor belt. By supporting the conveyor belt with the support rollers, the circuit board can be supported during glue scraping, ensuring that the glue on the circuit board is scraped off.

[0009] Preferably, limiting devices are symmetrically and fixedly arranged on the frames on both sides below the squeegee. The limiting devices include a plurality of limiting cylinders fixed on the frame, and the ends of the piston rods of the limiting cylinders are fixedly connected to the corresponding limiting plates. After the circuit board reaches below the squeegee, the limiting cylinders on both sides of the circuit board are activated, and the limiting plates move towards the circuit board, fixing the circuit board from both sides of the circuit board to prevent the circuit board from moving during glue scraping.

[0010] Preferably, suction cups are further fixed on the mounting plates on both sides of the squeegee. The suction cups are connected to an air pump through air pipes. The scraped powder is sucked by the suction cups to avoid dust pollution.

[0011] The utility model has the following advantages compared with the existing technology:

[0012] This device can realize glue scraping and cleaning of the circuit board. After the glue on one end face of the circuit board is cleaned, the circuit board is automatically flipped 180°. After the circuit board is flipped, glue scraping operation is performed on the other end face of the circuit board again. It can realize automatic glue scraping operation on both end faces of the circuit board, greatly improving the production efficiency of the circuit board.

Description of the Drawings

[0013] The following further details the specific embodiments of the utility model in conjunction with the drawings, where:

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2 is a schematic structural diagram of another embodiment of the utility model;

[0016] Figure 3 is a schematic structural diagram of a third embodiment of the utility model;

[0017] In the figure: 1, frame; 2, conveyor shaft; 3, conveyor motor; 4, conveyor belt; 5, slide bar; 6, lead screw; 7, scraping motor; 8, slide plate; 9, lifting cylinder; 10, squeegee; 11, limiting cylinder; 12, limiting plate; 13, turning shaft; 14, connecting block; 15, fixed groove; 16, turning motor; 17, return shaft; 18, return roller; 19, return motor; 20, synchronous pulley; 21, synchronous belt; 22, support shaft; 23, support roller; 24, suction cup; 25, air pipe;

Specific Embodiments

[0018] The following will describe in detail the embodiments of the present utility model in conjunction with the accompanying drawings:

[0019] Embodiment 1:

[0020] As Figure 1As shown in the figure, this embodiment discloses a circuit board cleaning device, which includes a frame 1. Two conveying shafts 2 are arranged on the frame 1. The conveying shafts 2 are driven to rotate by a conveying motor 3. The two conveying shafts 2 are wound around by a conveyor belt 4. A slide bar 5 and a lead screw 6 are arranged on the frame 1 above the conveyor belt 4. The lead screw 6 is driven to rotate by a scraping motor 7. A slide plate 8 is also arranged above the conveyor belt 4. The lead screw 6 passes through the slide plate 8 and is threadedly connected to the slide plate 8. The slide bar 5 passes through the slide plate 8 and is slidably connected to the slide plate 8. A plurality of lifting cylinders 9 are fixed on the slide plate 8. The ends of the piston rods of the lifting cylinders 9 are all fixed to the mounting plate. A scraper 10 is fixed to the bottom of the mounting plate. Rotating shafts 13 are arranged on the frame 1 on both sides of the end of the conveyor belt 4. Connecting blocks 14 are fixed to the ends of the rotating shafts 13. A U-shaped fixing groove 15 is fixed between the two connecting blocks 14. One of the rotating shafts 13 is fixed to the output end of a rotating motor 16. A plurality of rotating shafts 17 are also arranged on the frame 1. Rotary rollers 18 are fixed on the rotating shafts 17. The rotary rollers 18 are driven to rotate by a rotary motor 19. Place the circuit board to be scraped with glue on the conveyor belt 4. Drive the conveyor belt 4 to rotate through the conveying motor 3. The circuit board moves to below the scraper 10 as the conveyor belt 4 rotates. The conveying motor 3 stops, and the lifting cylinder 9 starts. The piston rod on the lifting cylinder 9 extends, and the scraper 10 descends. After the scraper 10 contacts the upper end of the circuit board, drive the lead screw 6 to rotate through the scraping motor 7. Since the lead screw 6 passes through the slide plate 8 and is threadedly connected to the slide plate 8, when the lead screw 6 rotates, the scraper 10 moves on the upper end of the circuit board, and the glue on the upper end of the circuit board is scraped off by the scraper 10. The scraper 10 moves from one end of the circuit board to the other end to scrape off the glue on the upper end of the circuit board. After the glue is scraped off, the lifting cylinder 9 starts. The piston rod on the lifting cylinder 9 shortens, and the scraper 10 rises. After the scraper 10 is separated from the circuit board, drive the conveyor belt 4 to rotate through the conveying motor 3. The circuit board moves with the conveyor belt 4. After one end of the circuit board is inserted into the fixing groove 15, the rotating motor 16 starts. The rotating motor 16 drives the rotating shaft 13 to rotate. After the rotating shaft 13 rotates 180 degrees, it reaches each rotary roller 18. Drive the rotary roller 18 to rotate through the rotary motor 19. The circuit board moves with the rotary roller 18. After the circuit board is separated from the fixing groove 15, drive the rotating shaft 13 to rotate 90 degrees again through the rotating motor 16. The fixing groove 15 reaches below the circuit board. Drive the rotary roller 18 to rotate in the reverse direction through the rotary motor 19. The circuit board moves towards the conveyor belt 4. After the circuit board moves onto the conveyor belt 4, scrape the glue on the other end of the circuit board again through the scraper 10. This device can realize scraping and cleaning of the circuit board. After the glue on one end face of the circuit board is cleaned, the circuit board is automatically flipped 180 degrees. After the circuit board is flipped, scrape the glue on the other end face of the circuit board again, which can realize automatic scraping of the glue on both end faces of the circuit board, greatly improving the production efficiency of the circuit board.

[0021] Among them, one of the rotary shafts 17 is fixed to the rotary motor 19, and synchronous pulleys 20 are fixed to the ends of the rotary shafts 17. The synchronous pulleys 20 are wound around by a synchronous belt 21.

[0022] Among them, limiting devices are symmetrically fixed on the frame 1 on both sides below the squeegee 10. The limiting devices include a plurality of limiting cylinders 11 fixed on the frame 1. The ends of the piston rods of the limiting cylinders 11 are fixed to the corresponding limiting plates 12. After the circuit board reaches below the squeegee 10, the limiting cylinders 11 on both sides of the circuit board are activated, and the limiting plates 12 move towards the circuit board, and the circuit board is fixed from both sides of the circuit board by the limiting plates 12 to prevent the circuit board from moving during glue scraping.

[0023] Embodiment 2:

[0024] As Figure 2 shown, this embodiment discloses a circuit board cleaning device. On the basis of the structure and principle of Embodiment 1, a plurality of support shafts 22 are further fixed on the frame 1 below the squeegee 10 of this embodiment. Support rollers 23 are arranged on the support shafts 22, and the support rollers 23 are arranged inside the conveyor belt 4. By supporting the conveyor belt 4 with the support rollers 23, the circuit board can be supported during glue scraping to ensure that the glue on the circuit board is scraped off.

[0025] Embodiment 3:

[0026] As Figure 3 shown, this embodiment discloses a circuit board cleaning device. On the basis of the structure and principle of Embodiment 1 or Embodiment 2, suction cups 24 are further fixed on the mounting plates on both sides of the squeegee 10 of this embodiment. The suction cups 24 are connected to an air pump through an air pipe 25. The scraped powder is sucked by the suction cups 24 and discharged to avoid dust pollution.

[0027] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, various changes, modifications, substitutions and variations can be made to these embodiments, and these changes, modifications, substitutions and variations should also be regarded as the protection scope of the present invention.

Claims

1. A circuit board cleaning device, comprising a frame, characterized in that: There are two conveying shafts arranged on the frame. The conveying shafts are driven to rotate by a conveying motor. The two conveying shafts are wound around by a conveyor belt. A sliding rod and a lead screw are arranged on the frame above the conveyor belt. The lead screw is driven to rotate by a scraping motor. A sliding plate is also arranged above the conveyor belt. The lead screw passes through the sliding plate and is threadedly connected to the sliding plate. The sliding rod passes through the sliding plate and is slidably connected to the sliding plate. A plurality of lifting cylinders are also fixed on the sliding plate. The ends of the piston rods of the lifting cylinders are all fixed to a mounting plate. A scraper is fixed to the bottom of the mounting plate. Turning shafts are arranged on the frame on both sides of the end of the conveyor belt. Connecting blocks are fixed to the ends of the turning shafts. A U-shaped fixing groove is fixed between the two connecting blocks. One of the turning shafts is driven to rotate by a turning motor. A plurality of rotating shafts are also arranged on the frame. Rotary rollers are fixed on the rotating shafts. The rotary rollers are driven to rotate by a rotary motor.

2. The circuit board cleaning device according to claim 1, wherein: One of the rotating shafts is fixed to the rotary motor. Synchronous wheels are fixed to the ends of the rotating shafts. The synchronous wheels are wound around by a synchronous belt.

3. The circuit board cleaning device according to claim 1, wherein: A plurality of support shafts are also fixed to the frame below the scraper. Support rollers are arranged on the support shafts. The support rollers are arranged inside the conveyor belt.

4. The circuit board cleaning device according to claim 1, wherein: Therefore, limiting devices are symmetrically fixed on the frame on both sides below the scraper. The limiting devices include a plurality of limiting cylinders fixed on the frame. The ends of the piston rods of the limiting cylinders are all fixed to the corresponding limiting plates.

5. The circuit board cleaning device according to claim 1, characterized in that: Suction cups are also fixed to the mounting plates on both sides of the scraper. The suction cups are connected to an air pump through air pipes.

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