CN209971848U

CN209971848U - Online PCB cleaning device of solder paste printing machine

Info

Publication number: CN209971848U
Application number: CN201920157824.8U
Authority: CN
Inventors: 许志斌
Original assignee: Suzhou Ning Hong Electronic Technology Co Ltd
Current assignee: Suzhou Ning Hong Electronic Technology Co Ltd
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2020-01-21
Anticipated expiration: 2029-01-29

Abstract

The utility model provides an on-line cleaning device of a solder paste printing machine, which comprises a frame, wherein the left side and the right side of the frame are respectively provided with a conveyer belt for conveying a circuit board, two ends of the circuit board are horizontally erected on the two conveyer belts, and the conveyer belts are driven by a motor; vertical electrostatic dust collection plates are respectively fixed on the left side wall and the right side wall of the rack, and the circuit board can be inserted into a gap between the electrostatic dust collection plates and the conveying belt; the top of the frame is provided with a blower with a downward air outlet. The utility model discloses can clean and catch the dirt bits on the circuit board, avoid the dirt bits to descend and cause secondary pollution, clean effectual.

Description

Online PCB cleaning device of solder paste printing machine

Technical Field

The utility model belongs to the technical field of mechanical equipment, concretely relates to online PCB cleaning device of tin cream printing machine.

Background

At present, solder paste printing of a circuit board (PCB) is mostly finished by adopting a solder paste printing machine, if the solder paste printing quality of the circuit board is to be ensured, the surface of the circuit board is required to be ensured to be clean before the solder paste is printed, and the phenomena of insufficient soldering and less soldering caused by the influence of dust on the printing effect are prevented. In the solder paste printing process, dust on the surface of the circuit board is usually swept only by blowing, and in the continuous production process, the dust may fall to the surface of the next circuit board again, so that the dust cannot be thoroughly cleared, and the cleaning effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an online PCB cleaning device of tin cream printing machine can clean and catch the dirt bits on the circuit board, avoids the dirt bits to descend and causes secondary pollution, and is clean effectual.

The utility model provides a following technical scheme:

an online PCB cleaning device of a solder paste printer comprises a rack, wherein a blower with a downward air outlet is installed at the top of the rack, conveying belts for conveying circuit boards are installed on the left side and the right side of the rack respectively, two ends of each circuit board are horizontally erected on the two conveying belts, and the conveying belts are driven by a motor; vertical electrostatic dust collection plates are respectively fixed on the left side wall and the right side wall of the rack, and the circuit board can be inserted into a gap between the electrostatic dust collection plates and the conveying belt; the bottom of the electrostatic dust collection plate is provided with dust blocking soft wool tops, and the dust blocking soft wool tops extend to the two ends of the electrostatic dust collection plate along the length direction of the electrostatic dust collection plate.

Preferably, the dust-blocking fluff strip comprises a connecting plate and a fluff strip fixed at the bottom of the connecting plate, the connecting plate is fixedly connected with the electrostatic dust collection plate in a detachable mode, and the surface of the fluff strip is coated with electrostatic dust collector.

Preferably, the length of the flexible wool top extends to the surface of the conveying belt, and the flexible wool top can be pushed by the circuit board to deform so as to brush the surface of the circuit board.

Preferably, the connecting plate comprises a horizontal bottom wall and two vertical side walls, the connecting plate is clamped on the bottom wall of the electrostatic dust collection plate, and the side walls of the connecting plate are fixed on the electrostatic dust collection plate through a plurality of bolts.

Preferably, the electrostatic dust collection plate is mounted to the frame by a plurality of bolts.

Preferably, the conveyer belt is polyvinyl chloride material, and the surface of conveyer belt is pasted and is had the dust binding membrane.

The utility model has the advantages that: the utility model discloses install in the front end of tin cream printing machine, utilize hair-dryer and electrostatic absorption board combined action, blow off the dirt bits on the circuit board surface earlier, recycle the dirt bits that the electrostatic absorption board of both sides will be kicked up and adsorb and live, avoid the dirt bits to fall after polluting the circuit board once more, improved the cleanliness factor in workshop simultaneously, clean circuit board is carried into tin cream printing machine printing tin cream again. The utility model discloses a set up the gap that is used for placing the circuit board between electrostatic absorption board and the conveyer belt to in-process that the fan sweeps the circuit board, the top of circuit board is blocked by electrostatic absorption board, and the circuit board can not rock or be crooked because of the direction change production of wind pressure in transportation process, has improved the job stabilization nature that sweeps. The soft dust-blocking wool tops at the bottom of the electrostatic dust collection plate can prevent dust from entering a gap between the electrostatic dust collection plate and the conveying belt, so that the cleanliness of the gap is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic front view of the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic view of the interior of the housing as viewed from the right side of FIG. 1;

labeled as: 1. a frame; 2. a circuit board; 3. a conveyor belt; 4. a motor; 5. an electrostatic dust collection plate; 6. a blower; 7. dust-blocking soft wool tops; 8. a connecting plate; 9. softening wool tops; 10. a bottom wall; 11. a side wall; 12. and (5) sticking a dust film.

Detailed Description

As shown in fig. 1 to 3, an on-line PCB cleaning device of a solder paste printer includes a frame 1, wherein conveyor belts 3 for conveying circuit boards 2 are respectively installed at the left and right sides of the frame 1, the conveyor belts 3 are driven by a motor, and the two conveyor belts 3 are fixedly connected by a transmission shaft, so that the two conveyor belts 3 synchronously rotate, the circuit board 2 in this embodiment is a PCB board with certain rigidity, and two ends of the circuit board 2 are horizontally erected on the two conveyor belts 3; the top of the frame 1 is provided with two blowers 6 with downward air outlets, and the blowers 6 can blow and sweep the surface of the circuit board 2; upright electrostatic dust collection plates 5 are fixed on the left side wall and the right side wall of the frame 1 respectively, the circuit board 2 can be inserted into a gap between the electrostatic dust collection plates 5 and the conveyor belt 3, the electrostatic dust collection plates 5 can adsorb dust raised by the blower 6 in real time, the dust is prevented from falling onto the circuit board again, and the surface of the circuit board 2 is kept clean.

As shown in fig. 1 and 2, the dust blocking bristles 7 are attached to the bottom of the electrostatic dust suction plate 5, and the dust blocking bristles 7 extend to both ends of the electrostatic dust suction plate 5 along the length direction of the electrostatic dust suction plate 5. The dust-blocking soft wool top 7 comprises a connecting plate 8 and a soft wool top 9 fixed at the bottom of the connecting plate 8, the surface of the soft wool top 9 is coated with electrostatic dust collector, the electrostatic dust collector can lock dust on the soft wool top 9, and the circuit board is prevented from being polluted by the dust on the soft wool top 9 when passing through. Connecting plate 8 includes horizontally diapire 10 and two upright lateral walls 11, and connecting plate 8 card is on the diapire of electrostatic absorption board 5 to on lateral wall 11 of connecting plate 8 is fixed in electrostatic absorption board 5 through a plurality of bolt, long-term the use back, the bolt can be loosened, will keep off the soft top wool 7 of dirt and dismantle by electrostatic absorption board 5, is convenient for in time clear up the adnexed dust on the soft top wool 9.

The length of the dust blocking soft wool top 7 extends to the surface of the conveying belt 3, so that a gap between the electrostatic dust collection plate 5 and the conveying belt 3 is blocked, and dust is prevented from entering the gap; the soft top 7 of keeping off dust's hair is enough soft, bulldozes soft top 9 and makes its deformation when circuit board 2 process to automatically brush the surface of circuit board 2, avoid circuit board 2's both ends to be detained the dirt bits about.

Conveyer belt 3 is the polyvinyl chloride material, and conveyer belt 3's surface paste has adhesive dust membrane 12, and adhesive dust membrane 12 has certain viscosity, can glue the dust on the conveyer belt 3 on the one hand, improves the cleanliness factor in the frame 1, and on the other hand can glue circuit board 2, reduces the resistance of soft top wool 9 to circuit board 2, makes circuit board 2 can move along the place along conveyer belt 3 forward. The dust-binding film 12 can have multiple layers, namely, a multi-layer sticking and stacking mode, when the viscosity of the dust-binding film on the uppermost layer is weakened, the dust-binding film is torn off from the conveying belt, and the dust-binding film on the second layer is used, so that the dust-binding film is convenient to use and maintain.

The electrostatic dust collection plate 5 is detachably mounted on the frame 1 through a plurality of bolts, so that the electrostatic dust collection plate 5 can be cleaned conveniently, and after the electrostatic dust collection plate 5 is dismounted, the connecting plate 8 of the dust blocking soft wool top can be taken down from the bottom of the electrostatic dust collection plate 5 conveniently.

This device during operation, starter motor 4 and hair-dryer 6, conveyer belt 3 and hair-dryer 6 begin to work, insert circuit board 2 horizontally again in the gap between 5 and the conveyer belt 3 of electrostatic absorption board, circuit board 2 follows conveyer belt 3 and moves forward, hair-dryer 6 sweeps the dirt bits on 2 surfaces of circuit board, the air current that hair-dryer 6 produced receives the resistance of circuit board to the top raise, the dirt bits that raise are adsorbed by the electrostatic absorption board 5 of both sides immediately, thereby the cleanness on 2 surfaces of circuit board has been guaranteed. Meanwhile, the soft wool strips 9 at the bottom of the electrostatic dust collection plate 5 prevent dust from entering a gap between the electrostatic absorption plate 5 and the conveying belt 3, so that the dust at the position is prevented from being accumulated; when the circuit board 2 passes through the soft wool tops at the bottom of the electrostatic dust collection plate, the soft wool tops 9 are extruded to deform, so that the soft wool tops 9 automatically clean dust at two ends of the circuit board 2, and the cleanliness of the surface of the circuit board 2 is further improved. The cleaned circuit board 2 continues to move forward to a tin brushing device of the tin paste printer for brushing tin.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An online PCB cleaning device of a solder paste printer is characterized by comprising a rack, wherein a blower with a downward air outlet is arranged at the top of the rack; the left side and the right side of the rack are respectively provided with a conveying belt for conveying the circuit board, two ends of the circuit board are horizontally erected on the two conveying belts, and the conveying belts are driven by a motor; vertical electrostatic dust collection plates are respectively fixed on the left side wall and the right side wall of the rack, and the circuit board can be inserted into a gap between the electrostatic dust collection plate and the conveying belt; the bottom of electrostatic dust collection plate is installed and is kept off dirt soft wool top, keep off dirt soft wool top along the length direction of electrostatic dust collection plate extends to the both ends of electrostatic dust collection plate.

2. An on-line PCB cleaning device of a solder paste printer according to claim 1, wherein the dust blocking fluff strip comprises a connecting plate and a fluff strip fixed at the bottom of the connecting plate, the connecting plate is fixedly connected with the electrostatic dust absorption plate in a detachable way, and the surface of the fluff strip is coated with electrostatic dust absorption agent.

3. An in-line PCB cleaning device of a solder paste printer as recited in claim 2, wherein the length of the flexible top wool extends to the surface of the conveyor belt, and the flexible top wool is pushed by the circuit board to deform so as to brush across the surface of the circuit board.

4. An in-line PCB cleaning device of a solder paste printer as recited in claim 3, wherein the connecting plate includes a horizontal bottom wall and two upright side walls, the connecting plate is clamped at the bottom of the electrostatic dust suction plate, and the side walls of the connecting plate are fixed on the electrostatic dust suction plate by a plurality of bolts.

5. An in-line PCB cleaning apparatus of a solder paste printer as recited in claim 3, wherein the electrostatic precipitator plate is mounted to the frame by a plurality of bolts.

6. An on-line PCB cleaning device of a solder paste printer as claimed in claim 3, wherein the conveyer belt is made of polyvinyl chloride, and a dust sticking film is stuck on the surface of the conveyer belt.