CN112566383B

CN112566383B - A kind of inverter motherboard etching equipment

Info

Publication number: CN112566383B
Application number: CN202110188366.6A
Authority: CN
Inventors: 何智勇
Original assignee: Nanjing Vocational University of Industry Technology NUIT
Current assignee: Hefei Minglong Electronic Technology Co ltd
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2021-06-01
Anticipated expiration: 2041-02-19
Also published as: CN112566383A

Abstract

The invention discloses an inverter mainboard etching device, which relates to the field of equipment mainboard etching processing and comprises a transfer mechanism, an etching mechanism and a discharging assembly, wherein the etching mechanism is positioned right below the transfer mechanism, the discharging assembly is arranged in the middle of the etching mechanism, the transfer mechanism is provided with two opposite groups, etching liquid is sprayed to the lower surface of a PCB for etching by arranging spraying from bottom to top, and the etching liquid can directly drip from the lower surface of the PCB downwards and cannot flow through the side surface of the PCB; and the PCB can be blown downwards continuously, the PCB can block the air flow right above the PCB, so that the etching liquid sprayed right below the PCB can not be blocked, and the air flow beside the PCB can blow away the etching liquid sprayed to the side surface of the PCB, so that the side surface of the PCB can not contact with the etching liquid, and the occurrence of the side etching phenomenon is avoided.

Description

Inverter mainboard etching equipment

Technical Field

The invention relates to the field of equipment mainboard etching processing, in particular to inverter mainboard etching equipment.

Background

The main board of various electrical devices is composed of various basic components carried on a PCB board, and most of the circuits in the PCB board are etched, such as the inverter main board. With the development of electronic products, higher requirements are made on the precision of the PCB.

Therefore, it is necessary to reduce the occurrence of the undercut phenomenon, which is difficult to avoid by the conventional etching methods, such as the immersion etching and the spray etching. Wherein the side etching phenomenon can be greatly improved relatively.

The side etching phenomenon caused by spray etching is mainly caused by two reasons, namely, when the etching solution is sprayed, the etching solution can be sprayed to the side surface of the PCB. And secondly, when the etching liquid flows away from the front surface of the PCB, the etching liquid can pass through the side surface of the PCB.

Disclosure of Invention

The invention aims to provide an inverter main board etching device, which is characterized in that etching liquid is sprayed to the lower surface of a PCB for etching by arranging spraying from bottom to top, and the etching liquid can directly drip from the lower surface of the PCB downwards and cannot flow through the side surface of the PCB; and the PCB can be blown downwards continuously, the PCB can block the air flow right above the PCB, so that the etching liquid sprayed right below the PCB can not be blocked, and the air flow beside the PCB can blow away the etching liquid sprayed to the side surface of the PCB, so that the side surface of the PCB can not contact with the etching liquid, and the occurrence of the side etching phenomenon is avoided.

The inverter mainboard etching equipment comprises a transfer mechanism, an etching mechanism and a discharging assembly, wherein the etching mechanism is positioned right below the transfer mechanism, the discharging assembly etches the middle part of the mechanism, the transfer mechanism is provided with two opposite groups, the transfer mechanism on the left rotates anticlockwise, and the transfer mechanism on the right rotates clockwise;

the transfer mechanism comprises an outer crawler belt and an inner crawler belt which are rotatably connected between the two outer side plates, the inner crawler belt is positioned in the outer crawler belt and divides the inner part of the outer crawler belt into an outer cavity and an inner cavity, an air pump is arranged in the inner cavity, the air pump is fixedly connected to the outer side plates and is communicated with the outer cavity through an air outlet pipe, and an air suction port of the air pump is positioned in the inner cavity;

the outer crawler belt is provided with a plurality of air holes communicated with the outer cavity, the inner crawler belt is provided with a plurality of rubber suckers through connecting columns, the rubber suckers are positioned on the outer side of the outer crawler belt, and the connecting columns are internally provided with air exhaust channels for communicating the rubber suckers and the inner cavity;

etching mechanism includes that a plurality of equidistance arrange spray tube, the liquid collecting tank of setting in the spray tube below and set up the liquid reserve tank in the liquid collecting tank below of track below outside, be equipped with a plurality of holes that spray on the spray tube, and every spray tube all connects on house steward through a transfer line, house steward and the water pump intercommunication in the liquid reserve tank, the liquid collecting tank passes through the weeping pipe intercommunication with the liquid reserve tank.

Preferably, the subassembly of unloading includes the piece of unloading of passing from the liquid collecting tank centre, the flitch is received to the below of unloading the piece, the liquid storage tank top is rotated and is connected with a plurality of cylinders, connects through the belt between the cylinder, rotate on the inner wall of liquid storage tank left side and be connected with the waterwheel, and the waterwheel is located the below of weeping pipe, the pivot of waterwheel is passed through the drive belt and is connected with the pivot of leftmost cylinder, receive the flitch and place on the cylinder, and receive the equidistance on the flitch and be equipped with a plurality of baffles.

Preferably, outer track inboard is equipped with two parting beads, and its outside is connected with the outer panel for ensure that outer track both sides are sealed, outer track and interior track drive through motor drive roll, the transport mechanism's on the left inner chamber right side is equipped with transports the dog, and the transport mechanism's on the right inner chamber left side is equipped with the dog of unloading, transports the dog and all with outer panel fixed connection with the dog of unloading, and all with interior track sliding connection.

Preferably, the outer side plate and the liquid collecting tank are fixedly connected to the support, and the motor is fixedly connected to the support through a motor base.

Preferably, it is connected with the commentaries on classics board to unload through the pivot rotation on the lateral wall of a below, the left end of commentaries on classics board is located and unloads the material in, its right-hand member be located unload outside the material and with the one end fixed connection of stay cord, the other end of stay cord is connected in the board upper end of taking out, take out the board and pass the limiting plate and sliding connection with it, limiting plate fixed connection is on the outer wall of unloading the material.

Preferably, the upper end of the unloading part is provided with an arc port inclined to the right, and the lower end of the unloading part is a flat port.

The invention has the advantages that:

1. by arranging the spraying from bottom to top, the etching solution is sprayed to the lower surface of the PCB for etching, and the etching solution can directly drip from the lower surface of the PCB downwards and cannot flow through the side surface of the PCB;

2. the PCB can continuously blow air downwards, the PCB can block air flow right above the PCB, so that etching liquid spraying right below the PCB cannot be blocked, and the air flow beside the PCB can blow away the etching liquid sprayed to the side surface of the PCB, so that the side surface of the PCB cannot contact with the etching liquid, and the occurrence of side etching is avoided;

3. the PCB is transported by adopting a sucking disc mode, compared with the transportation by a conveyer belt and a roller, the lower part of the PCB can be completely exposed, and the PCB can be prevented from sliding from gaps among fingers of the roller;

4. through specific structure setting for the sucking disc can be in specific position and let go up the PCB board, accomplishes the PCB board operation of unloading smoothly, need not control.

Drawings

FIG. 1 is a schematic diagram of the structure of the device of the present invention;

FIG. 2 is an overall top view of the apparatus of the present invention;

FIG. 3 is a schematic structural view of an outer crawler of the apparatus of the present invention;

FIG. 4 is a schematic diagram of the spray etching operation of the apparatus of the present invention;

FIG. 5 is a schematic view of the structure of the left transfer mechanism in the apparatus of the present invention;

FIG. 6 is an enlarged view of portion A of FIG. 1;

fig. 7 is an enlarged view of a portion B in fig. 1.

Wherein, 1, a transfer mechanism, 101, an outer crawler, 102, an inner crawler, 103, a parting bead, 104, an outer side plate, 105, an air hole, 106, a connecting column, 107, a rubber sucker, 108, an air pumping channel, 109, an air pump, 110, an air pumping opening, 111, an air outlet pipe, 112, an outer cavity, 113, an inner cavity, 114, a motor, 115, a driving roller, 116, a transfer block, 117, a discharge block, 118, a bracket, 119, a motor base, 2, an etching mechanism, 201, a liquid spraying pipe and 202, the device comprises a liquid conveying pipe, 203, a header pipe, 204, a liquid collecting tank, 205, a liquid storage tank, 206, a water pump, 207, a liquid leakage pipe, 208, a spraying hole, 3, a discharging component, 301, a discharging part, 302, a material collecting plate, 303, a partition plate, 304, a roller, 305, a water wheel, 306, a transmission belt, 307, an arc opening, 308, a rotating plate, 309, a rotating shaft, 310, a pull rope, 311, a drawing plate, 312, a limiting plate, 10, a preorder conveying belt, 20 and a PCB.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 7, an inverter main board etching device comprises a transfer mechanism 1, an etching mechanism 2 and a discharging assembly 3, wherein the etching mechanism 2 is located right below the transfer mechanism 1, the discharging assembly 3 is located in the middle of the etching mechanism 2, the transfer mechanism 1 is provided with two opposite groups, the transfer mechanism 1 on the left rotates anticlockwise, and the transfer mechanism 1 on the right rotates clockwise;

the transfer mechanism 1 comprises an outer crawler belt 101 and an inner crawler belt 102 which are rotatably connected between two outer side plates 104, the inner crawler belt 102 is positioned in the outer crawler belt 101, the inner part of the outer crawler belt 101 is divided into an outer cavity 112 and an inner cavity 113, an air pump 109 is arranged in the inner cavity 113, the air pump 109 is fixedly connected to the outer side plates 104 and is communicated with the outer cavity 112 through an air outlet pipe 111, and an air pumping hole 110 of the air pump 109 is positioned in the inner cavity 113;

a plurality of air holes 105 communicated with the outer cavity 112 are formed in the outer crawler 101, a plurality of rubber suckers 107 are arranged on the inner crawler 102 through a connecting column 106, the rubber suckers 107 are located on the outer side of the outer crawler 101, and an air suction channel 108 is arranged in the connecting column 106 and used for communicating the rubber suckers 107 with the inner cavity 113;

etching mechanism 2 includes that a plurality of equidistance arrange spray tube 201 in outer track 101 below, set up at the collecting tank 204 of spray tube 201 below and set up the liquid reserve tank 205 in collecting tank 204 below, be equipped with a plurality of spray holes 208 on spray tube 201, and every spray tube 201 all connects on house steward 203 through an transfer line 202, water pump 206 intercommunication in house steward 203 and the liquid reserve tank 205, collecting tank 204 and liquid reserve tank 205 pass through weeping pipe 207 and communicate.

The subassembly 3 of unloading includes the piece 301 of unloading that passes from the liquid trap 204 centre, unload the below of piece 301 and receive material board 302, liquid reserve tank 205 top is rotated and is connected with a plurality of cylinders 304, connects through the belt between the cylinder 304, it is connected with waterwheel 305 to rotate on the inner wall of liquid reserve tank 205 left side, and waterwheel 305 is located the below of weeping pipe 207, the pivot of waterwheel 305 is passed through drive belt 306 and is connected with the pivot of leftmost cylinder 304, receive material board 302 and place on cylinder 304, and receive material board 302 equidistance and be equipped with a plurality of baffles 303.

The outer crawler belt 101 is provided with two partition bars 103 on the inner side, and the outer side is connected with an outer side plate 104, so as to ensure that the two sides of the outer crawler belt 101 are sealed, the outer crawler belt 101 and the inner crawler belt 102 are driven by a driving roller 115 driven by a motor 114, a transfer stop block 116 is arranged on the right side of an inner cavity 113 of the transfer mechanism 1 on the left side, a discharge stop block 117 is arranged on the left side of the inner cavity 113 of the transfer mechanism 1 on the right side, and the transfer stop block 116 and the discharge stop block 117 are fixedly connected with the outer side plate 104 and are in.

The outer panel 104 and the liquid collecting tank 204 are fixedly connected to the bracket 118, and the motor 114 is fixedly connected to the bracket 118 through a motor base 119.

The side wall below the unloading piece 301 is rotatably connected with a rotating plate 308 through a rotating shaft 309, the left end of the rotating plate 308 is located in the unloading piece 301, the right end of the rotating plate 308 is located outside the unloading piece 301 and is fixedly connected with one end of a pull rope 310, the other end of the pull rope 310 is connected to the upper end of a pulling plate 311, the pulling plate 311 penetrates through a limiting plate 312 and is in sliding connection with the limiting plate, and the limiting plate 312 is fixedly connected to the outer wall of the unloading piece 301.

The upper end of the unloading piece 301 is provided with an arc mouth 307 which inclines to the right, and the lower end is a flat mouth.

The specific implementation mode and principle are as follows:

the PCB 20 is transferred from the preceding conveyor 10 to be etched, and first, the rubber suction cups 107 (the rubber suction cups 107 located right above the preceding conveyor 10) of the left transfer mechanism 1 suck the PCB 20 and start counterclockwise movement.

During the movement of the PCB 20 to the right, the lower liquid spraying pipe 201 sprays the etching solution to the upper PCB 20 through the spraying hole 208, and the air pump 109 in the inner cavity 113 operates to pump air from the air pumping channel 108 through the air pumping hole 110, so that the negative pressure generated in the rubber suction cup 107 sucks the PCB 20 more firmly, and the air pump 109 transfers the sucked air to the outer cavity 112 through the air outlet pipe 111, and finally discharges the air from the air hole 105, as shown in fig. 4:

spout the PCB board lower surface at the etching solution and etch, the etching solution can directly be followed PCB board lower surface and dripped downwards and can not flow through PCB board side, and simultaneously, wind hole 105 blows off decurrent air current, but the PCB board itself can block the air current directly over it, consequently can not hinder the etching solution that spouts directly under the PCB board, and the air current next door of PCB board can blow away the etching solution who spouts to PCB board side, make PCB board side can not contact the etching solution, avoid the emergence of undercut phenomenon.

When the PCB 20 moves to the right side of the left transfer mechanism 1, since the transfer stopper 116 is disposed at the right side of the inner cavity 113 of the left transfer mechanism 1, the suction force of the rubber suction cup 107 (the suction channel 108 is blocked) is reduced at the right side position of the left transfer mechanism 1; at this time, the rubber suction cup 107 on the left side of the right transfer mechanism 1 sucks the etched surface of the PCB 20, and the PCB 20 is transferred from the left transfer mechanism 1 to the right transfer mechanism 1 (the suction force of the rubber suction cup 107 on the right transfer mechanism 1 is larger);

the transport mechanism 1 on the right rotates clockwise, the PCB 20 is firstly passed from the top (in the process, the etched surface of the PCB 20 still faces downwards), the etching solution on the etched surface of the PCB 20 is ensured to drop, when the PCB 20 rotates to the position below the transport mechanism 1 on the right, the other surface of the PCB 20 starts to be etched, and the principle is the same as the above etching.

After the final etching is completed, the PCB 20 is transferred to the upper part of the arc opening 307 of the discharging member 301, the discharging stop 117 is arranged at the position in the inner cavity 113 of the right transfer mechanism 1, therefore, the PCB 20 can slide from the discharging member 301 to the receiving plate 302 below through the arc opening 307, the PCB 20 falls in the process or touches the rotating plate 308, so that the rotating plate 308 rotates, the drawing plate 311 is pulled up through the pulling rope 310, the receiving plate 302 is released, the receiving plate 302 moves forward, and a new receiving groove is exposed.

The material receiving plate 302 is driven by the rotation of the roller 304, the rotation of the roller 304 is driven by the rotation of the water wheel 305, the water wheel 305 is positioned below the liquid leakage pipe 207, the etching liquid in the liquid collecting tank 204 flows into the liquid storage tank 205 through the liquid leakage pipe 207, and the impact force of the etching liquid can drive the water wheel 305 to rotate in the process.

Based on the above, the invention has simple structure and flexible use, and the etching solution is sprayed to the lower surface of the PCB for etching by arranging the spraying from bottom to top, and the etching solution can directly drip from the lower surface of the PCB downwards and can not flow through the side surface of the PCB; and the PCB can be blown downwards continuously, the PCB can block the air flow right above the PCB, so that the etching liquid sprayed right below the PCB can not be blocked, and the air flow beside the PCB can blow away the etching liquid sprayed to the side surface of the PCB, so that the side surface of the PCB can not contact with the etching liquid, and the occurrence of the side etching phenomenon is avoided.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. The inverter main board etching equipment is characterized by comprising a transfer mechanism (1), an etching mechanism (2) and an unloading assembly (3), wherein the etching mechanism (2) is positioned under the transfer mechanism (1), the unloading assembly (3) is positioned in the middle of the etching mechanism (2), two opposite groups of transfer mechanisms (1) are arranged, the transfer mechanism (1) on the left rotates anticlockwise, and the transfer mechanism (1) on the right rotates clockwise;

the transfer mechanism (1) comprises an outer crawler belt (101) and an inner crawler belt (102) which are rotatably connected between two outer side plates (104), the inner crawler belt (102) is positioned in the outer crawler belt (101), the inner part of the outer crawler belt (101) is divided into an outer cavity (112) and an inner cavity (113), an air pump (109) is arranged in the inner cavity (113), the air pump (109) is fixedly connected to the outer side plates (104) and is communicated with the outer cavity (112) through an air outlet pipe (111), and an air pumping opening (110) of the air pump (109) is positioned in the inner cavity (113);

the outer crawler belt (101) is provided with a plurality of air holes (105) communicated with the outer cavity (112), the inner crawler belt (102) is provided with a plurality of rubber suckers (107) through connecting columns (106), the rubber suckers (107) are positioned on the outer side of the outer crawler belt (101), and the connecting columns (106) are internally provided with air extraction channels (108) for communicating the rubber suckers (107) with the inner cavity (113);

the etching mechanism (2) comprises a plurality of liquid spraying pipes (201) which are arranged below the outer crawler (101) at equal intervals, a liquid collecting tank (204) which is arranged below the liquid spraying pipes (201), and a liquid storage tank (205) which is arranged below the liquid collecting tank (204), wherein a plurality of spraying holes (208) are formed in the liquid spraying pipes (201), each liquid spraying pipe (201) is connected to a header pipe (203) through a liquid conveying pipe (202), the header pipe (203) is communicated with a water pump (206) in the liquid storage tank (205), and the liquid collecting tank (204) is communicated with the liquid storage tank (205) through a liquid leakage pipe (207);

unloading subassembly (3) are including unloading piece (301) of passing in the middle of from collecting tank (204), unloading piece (301) below receipts flitch (302), liquid reserve tank (205) top is rotated and is connected with a plurality of cylinders (304), connects through the belt between cylinder (304), rotate on the inner wall of liquid reserve tank (205) left side and be connected with waterwheel (305), and waterwheel (305) are located the below of weeping pipe (207), the pivot of waterwheel (305) is passed through drive belt (306) and is connected with the pivot of leftmost cylinder (304), receive flitch (302) and place on cylinder (304), and receive flitch (302) equidistance and be equipped with a plurality of baffles (303).

2. The inverter main board etching apparatus according to claim 1, wherein: outer track (101) inboard is equipped with two parting beads (103), and its outside is connected with outer panel (104), be used for ensuring that outer track (101) both sides are sealed, outer track (101) and interior track (102) drive roll (115) through motor (114) and drive, inner chamber (113) right side of transport mechanism (1) on the left side is equipped with transports dog (116), the left side of inner chamber (113) of transport mechanism (1) on the right side is equipped with unloading dog (117), transport dog (116) and unloading dog (117) all with outer panel (104) fixed connection, and all with interior track (102) sliding connection.

3. The inverter main board etching apparatus according to claim 2, wherein: the outer side plate (104) and the liquid collecting tank (204) are fixedly connected to a support (118), and the motor (114) is fixedly connected to the support (118) through a motor base (119).

4. The inverter main board etching apparatus according to claim 1, wherein: unload and rotate through pivot (309) on the lateral wall of material (301) below and be connected with commentaries on classics board (308), the left end of commentaries on classics board (308) is located unloading piece (301), its right-hand member be located unloading piece (301) outer and with the one end fixed connection of stay cord (310), the other end of stay cord (310) is connected and is being taken out board (311) upper end, take out board (311) and pass limiting plate (312) and sliding connection with it, limiting plate (312) fixed connection is on the outer wall of unloading piece (301).

5. The inverter main board etching apparatus according to claim 1, wherein: the upper end of the unloading piece (301) is provided with an arc opening (307) which inclines to the right, and the lower end is a flat opening.