CN111970840A - Printed circuit board etching device - Google Patents
Printed circuit board etching device Download PDFInfo
- Publication number
- CN111970840A CN111970840A CN202010887224.4A CN202010887224A CN111970840A CN 111970840 A CN111970840 A CN 111970840A CN 202010887224 A CN202010887224 A CN 202010887224A CN 111970840 A CN111970840 A CN 111970840A
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- Prior art keywords
- air
- circuit board
- clamping
- conveying belt
- rotating rod
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- 238000005530 etching Methods 0.000 title claims abstract description 66
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 35
- 238000007599 discharging Methods 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 11
- 244000309464 bull Species 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
- H05K3/068—Apparatus for etching printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0008—Apparatus or processes for manufacturing printed circuits for aligning or positioning of tools relative to the circuit board
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing Of Printed Circuit Boards (AREA)
Abstract
The invention relates to the technical field of circuit board production equipment, in particular to a printed circuit board etching device which comprises a conveying belt and a clamping assembly connected to the conveying belt. The clamping assembly comprises a support rod and at least two groups of clamping jaws. One end of the supporting rod is connected with the conveying belt, and the other end of the supporting rod is connected with the clamping jaw. Each group of clamping jaws is provided with a driving piece. The printed circuit board etching device is provided with a plurality of groups of clamping jaws which are respectively controlled, so that each group of clamping jaws can clamp the circuit board at different time. In the etching process, the circuit board can be well clamped only by ensuring that one group of clamping jaws are in a clamping state. The other clamping components are in a non-clamping state. This leaves the clamping position of the clamping components on the circuit board vacant, so that the etching liquid can enter the clamping position of the clamping jaws on the circuit board to etch the circuit board. The clamping position of each group of clamping jaws on the circuit board can be etched by time-sharing clamping of switching of each group of clamping jaws continuously.
Description
Technical Field
The invention relates to the technical field of circuit board production equipment, in particular to a printed circuit board etching device.
Background
Printed circuit boards in electronic devices are an extremely important component. In order to better process the surface of the circuit board, the circuit board needs to be prepared into a finished product through a plurality of processes in the production and manufacturing process. The etching process of the circuit board is one of the most critical processes in the whole manufacturing process of the circuit board, and the main purpose of the etching process is to form conductive circuits on the circuit board, namely to form a plurality of conductive circuits after etching a copper-clad layer on the circuit board.
When the existing etching machine etches the circuit board, the circuit board is clamped by the clamp and is immersed in the etching solution, so that the circuit board is etched by the etching solution. In the etching process, the clamped part of the circuit board is shielded by the clamp, and the part cannot be etched by the etching solution.
Content of application
The invention aims to provide a printed circuit board etching device which is provided with a plurality of groups of clamping jaws, wherein the groups of clamping jaws are respectively controlled, so that each group of clamping jaws clamps a circuit board in a time-sharing manner, and each clamped part of the circuit board can be etched at the moment when the clamped part is separated from clamping.
The embodiment of the invention is realized by the following technical scheme:
a printed circuit board etching device comprises a conveying belt and a clamping assembly connected to the conveying belt; the clamping assembly comprises a support rod and at least two groups of clamping jaws; one end of the support rod is connected to the conveying belt, and the other end of the support rod is connected to the clamping jaw; and each group of clamping jaws is provided with a driving piece.
Furthermore, an air inlet duct and an air distributing piece are arranged inside the support rod; the opening of the air inlet duct is arranged on the end face of one end, connected with the conveying belt, of the support rod; the printed circuit board etching device is provided with air connectors at one side of the conveying belt far away from the support rod in a manner of being matched with the air inlet duct;
the wind distribution piece comprises a rotating rod and an impeller connected to the rotating rod; the rotating rod is rotatably arranged in the support rod; the impeller is accommodated in the air inlet duct; an air outlet channel and an air exhaust channel are arranged in the rotating rod; one end of the air outlet channel is communicated with the air inlet channel, and the other end of the air outlet channel extends to the outer wall of the rotating rod;
the support rod is provided with a plurality of air collecting channels in cooperation with the air outlet channel, so that when the rotating rod rotates, the openings of the air outlet channel on the side surface of the rotating rod are switched among the plurality of air collecting channels; the exhaust duct is communicated with the outside of the support rod and the outer wall of the rotating rod; when the rotating rod rotates, the opening of the exhaust duct on the side surface of the rotating rod is switched among the plurality of air collecting ducts;
the clamping jaw is a pneumatic clamping jaw; each group of the clamping jaws is respectively communicated with one air collecting channel.
Furthermore, three air collecting channels are arranged; the three air collecting channels are uniformly distributed around the circumferential direction of the rotating rod; the opening of the air outlet channel on the side surface of the rotating rod and the opening of the air exhaust channel on the side surface of the rotating rod are respectively arranged on two opposite outer side walls of the rotating rod.
Furthermore, the three air collecting channels are provided with pressure relief ports; the three pressure relief ports are communicated through pressure relief pipes;
a push plate is arranged at the opening of the air inlet duct; the push plate is connected with three connecting rods; the other ends of the three connecting rods extend to the pressure relief port; one end of each connecting rod, which is close to the pressure relief port, is matched with one pressure relief port respectively, and a sealing plug for sealing the pressure relief port is arranged; the push plate is also provided with a first elastic piece for pushing the sealing plug to block the pressure relief opening;
the printed circuit board etching device is provided with pushing pieces which are matched with the air inlet duct and push the push plate on one side of the conveying belt, which is far away from the supporting rod.
Further, an air outlet is formed in one side, close to the conveying belt, of the air vent joint; a sealing block for plugging the air outlet is arranged in the ventilation joint; the sealing block is provided with a second elastic piece for pushing the sealing block to block the air outlet; the sealing block is also provided with an electromagnet;
a magnet is arranged at one end of the support rod close to the conveying belt; when the magnet is opposite to the electromagnet, the magnet and the electromagnet repel each other.
Furthermore, an extension pipe is arranged outside the air outlet; the telescopic pipe is connected with the sealing block through a scissor type telescopic piece, so that when the sealing block is far away from the conveying belt to move, the telescopic pipe extends towards the conveying belt.
Further, the conveyer belt comprises an upper horizontal section, a lower horizontal section and a vertical section;
the printed circuit board etching device is sequentially provided with a feeding station, an etching station, a discharging station and a liquid removing station along the conveying direction of the conveying belt; the feeding station and the discharging station are both positioned outside the upper horizontal section; the etching station is positioned outside the lower horizontal section; the liquid removing station is positioned outside the vertical section; the feeding station, the etching station and the liquid removing station are provided with air connectors; the blanking station is provided with a pushing piece; the ventilating joint and the pushing piece are arranged on the inner side of the conveying belt.
Furthermore, two rows of nozzles are vertically arranged on the liquid removing station; the two rows of nozzles are arranged oppositely, and the air injection directions are inclined downwards; the circuit board is capable of passing between two rows of the nozzles.
Further, the clamping jaw is provided with a first air bag and a second air bag; extension springs for enabling the first air bag and the second air bag to contract are arranged in the first air bag and the second air bag; when gas is introduced into the clamping jaw, the first air bag and the second air bag are close to each other.
The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:
the printed circuit board etching device is provided with a plurality of groups of clamping jaws which are respectively controlled, so that each group of clamping jaws can clamp the circuit board at different time. In the etching process, the circuit board can be well clamped only by ensuring that one group of clamping jaws are in a clamping state. The other clamping components are in a non-clamping state. This leaves the clamping position of the clamping components on the circuit board vacant, so that the etching liquid can enter the clamping position of the clamping jaws on the circuit board to etch the circuit board. The clamping position of each group of clamping jaws on the circuit board can be etched by time-sharing clamping of switching of each group of clamping jaws continuously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a printed circuit board etching apparatus provided in embodiment 1 of the present invention;
FIG. 2 is a schematic view of a strut mated with a vent fitting;
FIG. 3 is a schematic view of a strut engaged with a pusher;
FIG. 4 is a schematic view of the matching of the air outlet duct and the air collecting duct;
FIG. 5 is a schematic view of a circuit board held by a jaw;
FIG. 6 is a schematic view of the back side of the circuit board with the clamping jaws clamping the circuit board;
figure 7 is a block diagram of the jaws.
Icon: 1-conveying belt, 2-supporting rod, 21-air inlet channel, 22-air collecting channel, 221-pressure relief opening, 23-magnet, 24-push plate, 25-first elastic piece, 26-connecting rod, 27-sealing plug, 28-pressure relief pipe, 3-clamping jaw, 31-first air bag, 32-second air bag, 33-extension spring, 4-air joint, 41-sealing block, 42-second elastic piece, 43-extension pipe, 44-extension piece, 5-air distribution piece, 51-rotating rod, 511-air exhaust channel, 512-air outlet channel, 52-impeller, 6-etching groove, 7-pushing piece, 8-nozzle, 9-conveying roller and 10-circuit board.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Referring to fig. 1 to 7, the present invention provides a printed circuit board etching apparatus including a conveyor belt 1 and a clamping assembly connected to the conveyor belt 1. An etching bath 6 and conveying rollers 9 are provided along the periphery of the conveying belt 1. The etching bath 6 is used for placing etching solution and is arranged below the conveying belt 1. The feed rollers 9 include an incoming feed roller 9 and an outgoing feed roller 9. When the conveyer belt 1 moves, the clamping component moves along with the conveyer belt 1. The clamping assembly clamps the circuit board 10 at the incoming feed conveyor roller 9, and then conveys the circuit board 10 to the etching bath 6 for etching. Finally, the clamping assembly conveys the circuit board 10 to the discharging conveying roller 9, and then the circuit board 10 is placed on the discharging conveying roller 9.
The clamping assembly comprises a strut 2 and at least two sets of jaws 3. One end of the supporting rod 2 is connected with the conveying belt 1, and the other end is connected with the clamping jaw 3. Each set of clamping jaws 3 is provided with a driving element.
The printed circuit board etching device is provided with a plurality of groups of clamping jaws 3, and the groups of clamping jaws 3 are respectively controlled, so that each group of clamping jaws 3 can clamp the circuit board 10 in a time-sharing manner. In the etching process, the circuit board 10 can be well clamped only by ensuring that the group of clamping jaws 3 is in a clamping state. The other clamping components are in a non-clamping state. This leaves the holding positions of the holding members on the circuit board 10 vacant, so that the etching liquid can enter the holding positions of the holding claws 3 on the circuit board 10 to etch the circuit board 10. The clamping positions of the clamping jaws 3 on the circuit board 10 can be etched by time-sharing clamping of switching the groups of clamping jaws 3 continuously.
In this embodiment, the air inlet duct 21 and the air distributing member 5 are disposed inside the supporting rod 2. The opening of the air inlet duct 21 is arranged on the end surface of the support rod 2 connected to one end of the conveyor belt 1. The printed circuit board 10 etching device is distributed with air joints 4 on one side of the conveyer belt 1 far away from the support rod 2 and matched with the air inlet duct 21. When the support rod 2 moves to the opening of the air inlet duct 21 to align with the air connector 4 along with the conveyer belt 1, the air connector 4 feeds high-pressure air into the air inlet duct 21.
The wind distributing member 5 includes a rotary rod 51 and an impeller 52 connected to the rotary rod 51. The rotating rod 51 is rotatably provided inside the strut 2. The supporting rod 2 can be provided with a mounting groove on the bottom end surface of the air inlet duct 21. The size of the mounting groove is slightly larger than the outer diameter of the rotating rod 51. After the rotating rod 51 is installed in the installation groove, the rotating rod 51 can rotate in the installation groove and good air tightness is kept between the outer wall of the rotating rod 51 and the wall of the installation groove. The impeller 52 is accommodated in the air intake duct 21. When high-pressure air flows into the air inlet duct 21, the impeller 52 rotates under the action of the air flow, so that the rotating rod 51 rotates along with the impeller 52.
The rotary rod 51 is provided with an air outlet duct 512 and an air outlet duct 511 inside. The air outlet 512 extends from the upper end of the rotary rod 51 to the outer wall of the lower end. The upper end of the air outlet channel 512 is communicated with the air inlet channel 21, and the lower end extends to the outer wall of the rotating rod 51 and forms an opening on the outer wall of the rotating rod 51.
The support rod 2 is provided with a plurality of air collecting channels 22 in cooperation with the air outlet channel 512. The plurality of air collecting channels 22 are arranged around the rotating rod 51, and two adjacent air collecting channels 22 are separated by a partition plate. When the rotating rod 51 rotates, the opening of the air outlet channel 512 on the side surface of the rotating rod 51 rotates along with the rotating rod 51, and then the air collecting channels 22 are switched. When the opening of the side surface of the rotating rod 51 of the air outlet channel 512 rotates to a certain air collecting channel 22, the high-pressure air in the air inlet channel 21 can enter the air inlet channel 21.
The exhaust duct 511 communicates the outside of the strut 2 with the outer wall of the rotary rod 51. In practice, the exhaust duct 511 is provided with two openings on the side wall of the rotating rod 51, and the heights of the two openings are not consistent. The height of the opening at the lower end coincides with the height of the opening of the exhaust duct 512 at the side of the rotary shaft 51. That is, when the rotary shaft 51 rotates, the exhaust duct 511 is also switched between the plurality of air collecting ducts 22 at one opening of the side wall of the rotary shaft 51. The opening of branch 2 that is located the bull stick 51 outer wall upper end corresponding exhaust duct 511 is provided with the opening for the opening that exhaust duct 511 is located the outer wall upper end of bull stick 51 rotates the in-process along with the bull stick 51, sets up in the opening of branch 2 and communicates all the time in the opening that exhaust duct 511 is located the outer wall upper end of bull stick 51 and make the opening that exhaust duct 511 is located the outer wall upper end of bull stick 51 communicate all the time with the atmosphere. The clamping jaw 3 is a pneumatic clamping jaw 3. Each group of clamping jaws 3 is communicated with a wind collecting channel 22.
When the air inlet duct 21 is supplied with air through the air connector 4, the impeller 52 is rotated by the instantaneous air flow, so that the opening of the air outlet duct 512 is rotated and communicated with one of the air collecting ducts 22. At this time, the high pressure gas in the air inlet duct 21 enters the air collecting duct 22, so that the set of holding jaws 3 connected to the air collecting duct 22 acts and holds the circuit board 10. In this process, the opening of the exhaust duct 511 is also rotated and communicated with another air collecting duct 22. The high pressure gas in the air collecting duct 22 is exhausted to the atmosphere through the exhaust duct 511, and the holding claw 3 corresponding to the air collecting duct 22 is loosened to release the circuit board 10. The rotation of the rotary rod 51 is continued and the plurality of air collecting ducts 22 are sequentially ventilated. At the same time, the plurality of air collecting ducts 22 are also sequentially deflated. This causes the jaws 3 of the collection ducts 22 to be opened and closed continuously.
When the support rod 2 leaves the air vent joint 4, high-pressure air is not introduced into the air inlet duct 21, and the rotating rod 51 stops rotating. At this time, the high-pressure gas in the air collecting duct 22 not communicated with the air outlet duct 512 and the air outlet duct 511 is sealed, so as to ensure that the clamping jaws 3 corresponding to the air collecting duct 22 are in the clamping state, and further, the circuit board 10 is still in the clamping state.
When high-pressure gas is introduced into the air inlet duct 21, a vent hole communicating with the atmosphere is provided at the bottom of the air inlet duct 21 in order to ensure that the impeller 52 can rotate all the time. The impeller 52 is positioned between the opening of the air intake duct 21 and the vent hole. This allows the air flow to be always present in the air inlet duct 21 when the air inlet duct 21 is supplied with high pressure air, thereby ensuring the rotation of the impeller 52. In addition, the rotating speed of the rotating rod 51 can be controlled by controlling the high-pressure air introduced into the air inlet duct 21 during use. For example, air is introduced into the air inlet duct 21 for 1s and then introduced at intervals of 1 s. The air is circulated in sequence, so that the rotating rod 51 intermittently rotates, and the clamping and releasing switching frequency of the clamping jaws 3 is controlled.
In this embodiment, three air collecting ducts 22 are provided. The three air collecting ducts 22 are evenly distributed around the circumference of the rotary rod 51. The opening of the air outlet channel 512 at the side of the rotating rod 51 and the opening of the air outlet channel 511 at the side of the rotating rod 51 are respectively arranged at two opposite outer side walls of the rotating rod 51.
After the rotating rod 51 rotates and stops, the air outlet duct 512 and the air outlet duct 511 can only correspond to one air collecting duct 22 respectively. This allows a plenum 22 to be filled with pressurized air at all times, thereby ensuring that the circuit board 10 can be clamped.
In this embodiment, the three air collecting ducts 22 are provided with pressure relief ports 221. The three pressure relief ports 221 communicate through a pressure relief tube 28.
A push plate 24 is provided at an opening of the air inlet duct 21. Three links 26 are connected to the push plate 24. The other ends of the three links 26 each extend to a pressure relief port 221. One end of each connecting rod 26 close to the pressure relief port 221 is provided with a sealing pressure relief port 221 and a sealing plug 27 which are matched with one pressure relief port 221. The push plate 24 is also provided with a first elastic member 25 for pushing the sealing plug 27 to block the pressure relief port 221. When the push plate 24 is moved, the first elastic member 25 is deformed to store energy. At the same time, the three connecting rods 26 are pushed by the push plate 24 to move, so that the three sealing plugs 27 open the three pressure relief ports 221. At this time, the three air collecting chambers are communicated, and the enclosed high-pressure gas in the air collecting channel 22 which is not communicated with the air outlet channel 512 and the air outlet channel 511 is discharged through the other two air collecting chambers, so that all the clamping jaws 3 are in a loose state, and the circuit board 10 is convenient to take down from the clamping assembly.
The printed circuit board etching device is provided with pushing pieces 7 which are matched with the air inlet duct 21 and are used for pushing the pushing plates 24 on one side of the conveying belt 1, which is far away from the support rod 2. The pushing member 7 may be a pushing member such as a cylinder. The pushing piece 7 acts to push the pushing plate 24, and then all the air in the air collecting duct 22 is discharged. After the pushing member 7 is retracted, the pushing plate 24 moves under the most effective elastic force of the first elastic member 25, so that the three sealing plugs 27 seal the three pressure relief ports 221.
In this embodiment, an air outlet is disposed on one side of the air joint 4 close to the conveyor belt 1. A sealing block 41 for sealing the air outlet is arranged in the ventilation joint 4. The sealing block 41 is provided with a second elastic member 42 for pushing it to close the air outlet. The sealing block 41 is also provided with an electromagnet. The end of the supporting rod 2 close to the conveying belt 1 is provided with a magnet 23. When the magnet 23 faces the electromagnet, the magnet 23 and the electromagnet repel each other.
When the rod 2 moves to align with the vent connector 4 following the conveyor belt 1, the sealing block 41 compresses the second elastic member 42 under the action of the magnet 23 and the electromagnet, so that the air outlet is opened. At this time, the high pressure gas in the air inlet duct 21 can enter the air inlet joint 4. When the support rod 2 leaves the air vent joint 4, the sealing block 41 seals off the air outlet under the action of the second elastic piece 42. This allows the on/off of the air flow of the air connector 4 to be automatically controlled. Meanwhile, when intermittent air supply is needed, the intermittent electrification of the electromagnet is controlled to realize.
In this embodiment, an extension tube 43 is disposed outside the air outlet. The telescopic tube 43 is connected with the sealing block 41 through a scissor type telescopic piece 44, and two ends of two scissor rods of the telescopic piece 44 are connected with the sealing block 41 and the tube opening of the telescopic tube 43 in a sliding manner. So that the bellows 43 extends towards the conveyor belt 1 when the sealing block 41 is moved away from the conveyor belt 1. Meanwhile, in the process that the sealing block 41 blocks the air outlet, the extension tube 43 retracts automatically.
In this embodiment, the conveyor belt 1 includes an upper horizontal section, a lower horizontal section, and a vertical section. The printed circuit board etching device is sequentially provided with a feeding station, an etching station, a discharging station and a liquid removing station along the conveying direction of the conveying belt 1. The feeding station and the discharging station are both positioned outside the upper horizontal section. The etching station is located outside the lower horizontal section. The liquid removing station is positioned outside the vertical section. The material loading station, the etching station and the liquid removing station are all provided with ventilating joints 4. The blanking station is provided with a pusher 7. The air-vent joint 4 and the pushing member 7 are both disposed inside the conveyor belt 1. The etching bath 6 is disposed below the etching station.
When the conveyer belt 1 rotates, the supporting rod 2 rotates along with the conveyer belt. When the support rod 2 moves to the feeding station, the air vent joint 4 of the feeding station is automatically opened and vents air to the air inlet duct 21, so that the clamping jaws 3 clamp the circuit board 10. When the support rod 2 moves to the etching station, the air vent joint 4 of the etching station is opened, so that the groups of clamping jaws 3 are clamped in time sharing, and the etching solution can etch each part of the circuit board 10. Meanwhile, the continuous switching of the opening and the clamping of the plurality of clamping jaws 3 also enables the etching solution around the clamping jaws 3 to flow, so that the etching solution can better contact the circuit board 10. When the support rod 2 moves to the blanking station, the pushing piece 7 of the blanking station pushes the push plate 24, so that gas in all gas collecting chambers is discharged, all the clamping jaws 3 are made to release the circuit board 10, and the circuit board 10 is put down.
In this embodiment, the liquid removal station is vertically provided with two rows of nozzles 8. The two rows of nozzles 8 are arranged oppositely, and the air injection directions are inclined downwards. The circuit board 10 can pass between two rows of nozzles 8. When the supporting rod 2 moves to the liquid removing station, the air joint 4 of the liquid removing station is opened, so that the multiple groups of clamping jaws 3 are clamped in a time-sharing mode, and gas sprayed out from the nozzles 8 can be sprayed to each part of the circuit board 10. Thereby completely cleaning the residual etching solution on the circuit board 10.
In this embodiment, the jaw 3 is provided with a first air pocket 31 and a second air pocket 32. The first air bag 31 and the second air bag 32 are each provided inside with an extension spring 33 that contracts them. When the clamping jaw 3 is filled with gas, the first air bag 31 and the second air bag 32 are mutually close to each other, and the circuit board 10 between the first air bag 31 and the second air bag 32 is clamped. When the air collecting duct 22 corresponding to the clamping jaw 3 is communicated with the atmosphere, the first air bag 31 and the second air bag 32 are retracted under the action of the respective tension springs 33, so that the clamped part of the circuit board 10 is exposed.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. 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 (9)
1. A printed circuit board etching device is characterized in that: comprises a conveying belt (1) and a clamping component connected with the conveying belt (1); the clamping assembly comprises a support rod (2) and at least two groups of clamping jaws (3); one end of the support rod (2) is connected to the conveying belt (1), and the other end of the support rod is connected to the clamping jaw (3); and each group of the clamping jaws (3) is provided with a driving piece.
2. The printed circuit board etching apparatus of claim 1, wherein: an air inlet duct (21) and an air distributing piece (5) are arranged inside the supporting rod (2); the opening of the air inlet duct (21) is formed in the end face of one end, connected to the conveying belt (1), of the support rod (2); the printed circuit board etching device is provided with air connectors (4) which are matched with the air inlet duct (21) and distributed on one side of the conveying belt (1) far away from the support rod (2);
the wind distribution piece (5) comprises a rotating rod (51) and an impeller (52) connected to the rotating rod (51); the rotating rod (51) is rotatably arranged in the support rod (2); the impeller (52) is accommodated in the air inlet duct (21); an air outlet channel (512) and an air exhaust channel (511) are arranged in the rotating rod (51); one end of the air outlet channel (512) is communicated with the air inlet channel (21), and the other end of the air outlet channel extends to the outer wall of the rotating rod (51);
the support rod (2) is provided with a plurality of air collecting channels (22) in cooperation with the air outlet channel (512), so that when the rotating rod (51) rotates, the openings of the air outlet channel (512) on the side surface of the rotating rod (51) are switched among the plurality of air collecting channels (22); the exhaust duct (511) is communicated with the outside of the support rod (2) and the outer wall of the rotating rod (51); when the rotating rod (51) rotates, the openings of the exhaust duct (511) on the side surface of the rotating rod (51) are switched among the plurality of air collecting ducts (22);
the clamping jaw (3) is a pneumatic clamping jaw (3); each group of the clamping jaws (3) is respectively communicated with one air collecting channel (22).
3. The printed circuit board etching apparatus of claim 2, wherein: three air collecting channels (22) are arranged; the three air collecting channels (22) are uniformly distributed around the circumferential direction of the rotating rod (51); the opening of the air outlet channel (512) on the side surface of the rotating rod (51) and the opening of the air exhaust channel (511) on the side surface of the rotating rod (51) are respectively arranged on two opposite outer side walls of the rotating rod (51).
4. The printed circuit board etching apparatus of claim 3, wherein: the three air collecting channels (22) are provided with pressure relief ports (221); the three pressure relief ports (221) are communicated through a pressure relief pipe (28);
a push plate (24) is arranged at the opening of the air inlet duct (21); the push plate (24) is connected with three connecting rods (26); the other ends of the three connecting rods (26) extend to the pressure relief opening (221); one end of each connecting rod (26) close to the pressure relief opening (221) is matched with one pressure relief opening (221) and is provided with a sealing plug (27) for sealing the pressure relief opening (221); the push plate (24) is also provided with a first elastic part (25) for pushing a sealing plug (27) to block the pressure relief port (221);
the printed circuit board etching device is characterized in that pushing pieces (7) for pushing the pushing plate (24) are distributed on one side of the conveying belt (1) far away from the supporting rod (2) and matched with the air inlet duct (21).
5. The printed circuit board etching apparatus of claim 4, wherein: an air outlet is formed in one side, close to the conveying belt (1), of the ventilating joint (4); a sealing block (41) for plugging the air outlet is arranged in the ventilation joint (4); the sealing block (41) is provided with a second elastic piece (42) for pushing the sealing block to block the air outlet; the sealing block (41) is also provided with an electromagnet;
a magnet (23) is arranged at one end of the support rod (2) close to the conveying belt (1); when the magnet (23) is over against the electromagnet, the magnet (23) and the electromagnet repel each other.
6. The printed circuit board etching apparatus of claim 5, wherein: an extension pipe (43) is arranged outside the air outlet; the telescopic pipe (43) is connected with the sealing block (41) through a scissor type telescopic piece (44), so that when the sealing block (41) moves away from the conveying belt (1), the telescopic pipe (43) extends towards the conveying belt (1).
7. The printed circuit board etching apparatus of claim 6, wherein: the conveying belt (1) comprises an upper horizontal section, a lower horizontal section and a vertical section;
the printed circuit board etching device is sequentially provided with a feeding station, an etching station, a discharging station and a liquid removing station along the conveying direction of the conveying belt (1); the feeding station and the discharging station are both positioned outside the upper horizontal section; the etching station is positioned outside the lower horizontal section; the liquid removing station is positioned outside the vertical section; the feeding station, the etching station and the liquid removing station are all provided with air joints (4); the blanking station is provided with a pushing piece (7); the ventilating joint (4) and the pushing piece (7) are arranged on the inner side of the conveying belt (1).
8. The printed circuit board etching apparatus of claim 7, wherein: two rows of nozzles (8) are vertically arranged on the liquid removing station; the two rows of nozzles (8) are arranged oppositely, and the air injection directions are inclined downwards; the circuit board (10) can pass between two rows of the nozzles (8).
9. The printed circuit board etching apparatus of claim 2, wherein: the clamping jaw (3) is provided with a first air bag (31) and a second air bag (32); an extension spring (33) for enabling the first air bag (31) and the second air bag (32) to contract is arranged in each air bag; when gas is introduced into the clamping jaw (3), the first air bag (31) and the second air bag (32) are close to each other.
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| CN202010887224.4A CN111970840B (en) | 2020-08-28 | 2020-08-28 | Printed circuit board etching device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010887224.4A CN111970840B (en) | 2020-08-28 | 2020-08-28 | Printed circuit board etching device |
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| CN111970840A true CN111970840A (en) | 2020-11-20 |
| CN111970840B CN111970840B (en) | 2021-05-18 |
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| CN111970840B (en) | 2021-05-18 |
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Effective date of registration: 20231130 Address after: 402460 Building 5 and 9, No. 9 Chuangxin Avenue, Changzhou Street, Rongchang District, Chongqing City Patentee after: Chongqing Gaozhi Electronic Technology Co.,Ltd. Address before: 318020 Room 101, unit 2, building 8, Juzhou new village, Dongcheng Street, Huangyan District, Taizhou City, Zhejiang Province Patentee before: Li Zhongbo |
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