PCB hole full-automatic metallization device for PCB manufacturing

Abstract

The invention belongs to the technical field of PCB manufacturing, and particularly relates to a PCB hole full-automatic metallization device for PCB manufacturing, which comprises a bubble box for soaking a PCB and an accommodating box arranged below the bubble box, one side of the bubble box is provided with a drain pipe, the other end of the bubble box is divided into a water outlet bin through a partition plate, the partition plate is provided with a plurality of water leakage holes, and the water leakage holes are communicated with the drain pipe. The interior of the water outlet bin communicates with the containing box through a blow-off pipe, a circulation assembly is arranged on the containing box and used for communicating the containing box with the drainage pipe, a water filtering barrel with an opening in the top is arranged in the containing box, a first conical filter screen with an upward tip is arranged in the water filtering barrel, and oil dirt in the liquid medicine is rapidly intercepted through the first conical filter screen when the liquid medicine directionally flows towards the water outlet bin; the core problems of tank liquid oil stain accumulation, emulsification performance reduction and secondary pollution in conventional soaking type oil removal are solved, and the service life of the oil removal agent is remarkably prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of PCB manufacturing, in particular to a full-automatic PCB hole metallization device for PCB manufacturing. BACKGROUND

[0002] With the rapid development of electronic devices towards miniaturization, high integration and high power density, multi-layer PCB has become the key carrier of core electronic components such as smart phones, servers and new energy equipment because it can effectively improve the layout density of the circuit and reduce the product size.

[0003] However, the different circuit layers of the multi-layer PCB cannot be directly connected, and physical communication needs to be achieved through drilling. However, the PCB substrate (such as epoxy resin and glass fiber) is an insulating material, and the hole wall is still in an insulating state after drilling. If the hole is not metallized, the circuit layers of the multi-layer PCB will be in an isolated state, and the signal cannot be transmitted across layers.

[0004] The conventional PCB hole metallization process needs to go through the steps of pretreatment (cleaning the drilling dirt), deburring, chemical oil removal, micro-etching, activation, chemical copper plating, electroplating thickening copper and post-treatment. Among them, the immersion type alkaline chemical oil removal is the mainstream application method in the industry because of its low equipment cost and strong batch adaptability. It is through the components such as surfactants and chelating agents in the alkaline oil removal agent to emulsify and saponify the oil stains on the surface and hole wall of the PCB, so that the oil stains are separated from the substrate and suspended in the oil removal tank liquid, thereby achieving cleaning effect.

[0005] However, as the oil removal process continues, the oil stains separated from the PCB will continue to accumulate and suspend in the tank liquid, and the surfactant will be occupied by a large number of suspended oil droplets, and the emulsification performance will decrease sharply. On the other hand, the suspended oil droplets will gradually aggregate to form small oil droplets, which not only easily re-adhere to the cleaned PCB surface and inside the hole, causing secondary pollution, but also a large number of suspended oil droplets will destroy the stability of the oil removal liquid, change its viscosity and surface tension, accelerate the failure of the agent, and frequent replacement of the tank liquid not only increases the cost of consumables, but also reduces the production efficiency due to the stoppage for liquid replacement.

[0006] Therefore, the application provides a full-automatic PCB hole metallization device for PCB manufacturing. SUMMARY

[0007] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art.

[0008] The technical scheme adopted by the application to solve the technical problems is: the full-automatic PCB hole metallization device for PCB manufacturing comprises a soaking box for soaking the PCB and a containing box arranged below the soaking box.

[0009] One side of the bubble tank is provided with a drain pipe, the other end of the bubble tank is separated by a partition plate, a plurality of water leakage openings are arranged on the partition plate, the water outlet chamber is communicated with the containing box through the drain pipe, a circulating assembly is arranged on the containing box for the communication between the containing box and the drain pipe;

[0010] A top-open filter cylinder is arranged in the containing box, a first conical filter screen with upward pointed end is arranged in the filter cylinder, a cleaning rope is sleeved on the first conical filter screen, and a control assembly for controlling the expansion or contraction of the cleaning rope is arranged in the filter cylinder;

[0011] A second conical filter screen is fixedly installed in the first conical filter screen, and a space is left between the first conical filter screen and the second conical filter screen, a third conical filter screen is rotatably installed on the inner wall of the second conical filter screen, and the mesh opening positions correspond to each other;

[0012] A water feeding pipe is fixedly installed in the first conical filter screen, a first water hole and a second water hole are formed in the water feeding pipe, the first water hole is located outside the first conical filter screen, and the second water hole is located inside the first conical filter screen;

[0013] A pump water assembly is arranged in the containing box for feeding water in the containing box into the water feeding pipe.

[0014] The control assembly comprises a moving block, a control line block and a moving line wheel, the moving block is slidably installed in the filter cylinder, the control line block is installed on the moving block through a plurality of telescopic rods, a winding wheel is elastically installed in the control line block, the moving line wheel is rotatably installed at the bottom of the control line block and is attached to the first conical filter screen, and the two ends of the cleaning rope are fixedly connected to the winding wheel through the control line block.

[0015] The pump water assembly comprises a pump water cylinder, a water suction pipe, a water outlet pipe and a piston, the pump water cylinder is fixedly installed in the containing box, the piston is slidably installed in the pump water cylinder, the water suction pipe and the water outlet pipe are arranged on the pump water cylinder, the other end of the water suction pipe extends to the bottom of the inner wall of the containing box, the other end of the water outlet pipe extends to the inside of the water feeding pipe, and a one-way valve is arranged on each of the water suction pipe and the water outlet pipe.

[0016] A driving motor is fixedly installed in the containing box, a reciprocating screw rod is fixedly installed on the output shaft of the driving motor, a sliding rod is threadedly connected in the reciprocating screw rod, and the other end of the sliding rod extends to the pump water cylinder and is fixedly connected to the piston.

[0017] A rotating ring is fixedly installed at the bottom end of the third conical filter screen, a guide rod is fixedly installed on the outer wall of the rotating ring, an arc-shaped groove is formed in the inner wall of the first conical filter screen, and one end of the guide rod extends to the inside of the arc-shaped groove.

[0018] The inside of the third conical filter screen is fixedly installed with a rotating rod through a connecting rod, the water feeding pipe is rotatably installed in the inside of the rotating rod, a driven wheel is fixedly installed on the rotating rod, a driving wheel is fixedly installed on the reciprocating screw rod, and the driving wheel and the driven wheel are connected through a belt.

[0019] The bottom of the filter cylinder is fixedly installed with a impurity discharging pipe, the inside of the impurity discharging pipe is provided with a conveying auger, and the outer wall of the first conical filter screen is elastically installed with a scraper.

[0020] The inside of the containing box is rotatably installed with a reciprocating screw rod, the moving block is slidably installed on the outer wall of the reciprocating screw rod, the reciprocating screw rod is fixedly connected with the conveying auger, and the outer wall of the reciprocating screw rod is slidably installed with a plug for plugging the impurity discharging pipe.

[0021] The outer wall of the first conical filter screen is fixedly installed with a transmission gear, the outer wall of the plug is fixedly installed with a rotating gear, the inner wall of the containing box is fixedly installed with a positioning ring, the inner wall of the positioning ring is rotatably installed with a control cylinder, and the positioning ring is inserted with the control cylinder through an inclined clamping block.

[0022] The inside of the control cylinder is elastically installed with a sliding cylinder, the outer wall of the sliding cylinder is fixedly installed with a guide block, the inner wall of the control cylinder is provided with a spiral groove, and the sliding cylinder is fixedly installed at the top end of the plug.

[0023] The outer wall of the water feeding pipe is fixedly installed with an annular water box, the annular water box is communicated with the water feeding pipe, the outer wall of the water feeding pipe is slidably installed with a blocking ring, the inside of the annular water box is provided with an annular float, and the top end of the annular float is connected with the top of the blocking ring through a transmission rope.

[0024] The inside of the annular water box is slidably installed with a plug rod, the top end of the plug rod extends out of the top of the annular water box and is fixedly installed with a water pressure plate, and a top pressing spring is arranged between the water pressure plate and the annular water box.

[0025] The beneficial effects of the present application are as follows:

[0026] 1. The PCB hole full-automatic metallization device for PCB manufacturing, through the setting of the circulating assembly, the filter cylinder and the first conical filter screen, the circulating assembly drives the directional flow of the liquid medicine in the bubble tank to the water outlet bin, through the water leakage holes of different liquid levels on the partition plate, the suspended oil dirt falling off the surface of the PCB is efficiently introduced into the water outlet bin, and then is sent into the filter cylinder in the containing box through the sewage pipe; the first conical filter screen rapidly intercepts the oil dirt in the liquid medicine, so that the clean liquid medicine is reflowed to the bubble tank for recycling, realizes the directional circulation and real-time filtration system of the liquid medicine, solves the core problems of accumulation of tank liquid oil dirt, emulsification performance decline and secondary pollution in the conventional soaking type oil removal, and significantly prolongs the service life of the oil removal agent.

[0027] 2. The PCB hole full-automatic metalization device for PCB manufacturing, the cleaning liquid is pumped into the water pipe by the pump water assembly, the oil dirt is softened by the liquid sprayed by the first water hole, the adhesion between the oil dirt and the filter screen is cut off, the control assembly drives the cleaning rope to expand and contract along the surface of the first conical filter screen and slide up and down reciprocating, the oil dirt attached to the surface of the filter screen is scraped off efficiently, the liquid sprayed by the second water hole forms pressure in the filter screen chamber, the oil dirt blocking the mesh is pushed out, the filter screen keeps unobstructed filtering state for a long time, and the automatic operation level of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] The application will be further described below with reference to the drawings.

[0029] Figure 1 is a perspective view of the application;

[0030] Figure 2 is an installation schematic view of the water filter cylinder in the application;

[0031] Figure 3 is a sectional view of the water filter cylinder in the application;

[0032] Figure 4 is a sectional view of the first conical filter screen in the application;

[0033] Figure 5 is an enlarged view of A in the application; Figure 4

[0034] Figure 6 is an enlarged view of B in the application; Figure 4

[0035] Figure 7 is an enlarged view of C in the application. Figure 4

[0036] ​​​In the figure: 1, bubble tank; 2, containing tank; 3, circulating pump; 4, drain pipe; 5, partition; 6, water outlet bin; 7, water leakage port; 8, water filter cylinder; 9, first conical filter screen; 10, driving motor; 11, driving wheel; 12, driven wheel; 13, reciprocating screw rod; 14, sliding rod; 15, piston; 16, pump water cylinder; 17, water suction pipe; 18, water outlet pipe; 19, moving block; 20, control wire block; 21, moving wire wheel; 22, cleaning rope; 23, reciprocating threaded rod; 24, rotating rod; 25, water delivery pipe; 26, impurity discharge pipe; 27, conveying auger; 28, scraper; 29, rotating ring; 30, guide rod; 31, arc-shaped groove; 32, second conical filter screen; 33, third conical filter screen; 34, annular water box; 35, sewage pipe; 36, annular float; 37, plug rod; 38, water pressure plate; 39, transmission rope; 40, blocking ring; 41, first water hole; 42, second water hole; 43, transmission gear; 44, blockage; 45, sliding cylinder; 46, spiral groove; 47, guide block; 48, positioning ring; 49, inclined clamping block; 50, control cylinder. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application will be further described below in conjunction with specific embodiments.

[0038] The PCB hole full-automatic metalization device for PCB manufacturing comprises a bubble tank 1 for soaking PCB and a containing tank 2 arranged below the bubble tank 1.

[0039] A drain pipe 4 is arranged at one side of the bubble tank 1, and the other end of the bubble tank 1 is divided into a water outlet bin 6 by a partition 5, a plurality of water leakage ports 7 are arranged on the partition 5, and the water outlet bin 6 is communicated with the containing tank 2 through a sewage pipe 35.

[0040] The circulating assembly comprises a circulating pump 3 arranged at one side of the containing tank 2 and an inlet pipe and an outlet pipe arranged on the circulating pump 3, the inlet pipe is communicated with the inner cavity of the containing tank 2, and the outlet pipe is communicated with the drain pipe 4.

[0041] The PCB is placed into the bubble tank 1, and the oil stains on the surface of the PCB and the hole wall are subjected to emulsification and saponification treatment, so that the oil stains are separated from the base material and suspended in the bubble tank 1, the liquid medicine in the containing tank 2 is sent into the drain pipe 4 and discharged through the circulating assembly, the liquid medicine flows towards the direction of the partition 5 through the arrangement of the drain pipe 4, the oil stains on the PCB and the oil stains in the liquid medicine are pushed into the water outlet bin 6 through the water leakage ports 7, the plurality of water leakage ports 7 are arranged at the top and bottom of the partition 5, so that the oil stains at different liquid levels in the bubble tank 1 can be sent into the water outlet bin 6, and the liquid medicine in the water outlet bin 6 flows to the inside of the containing tank 2 through the sewage pipe 35.

[0042] A water filtering cylinder 8 with a top opening is arranged in the containing box 2, a first conical filter screen 9 with a pointed end upward is arranged in the water filtering cylinder 8, a cleaning rope 22 is sleeved on the first conical filter screen 9, and a control assembly for controlling expansion or contraction of the cleaning rope 22 is arranged in the water filtering cylinder 8;

[0043] The water filtering cylinder 8 is located directly below the drain pipe 35, when the drug liquid discharged from the drain pipe 35 enters the containing box 2, the drug liquid enters the inside of the water filtering cylinder 8, at this time, the drug liquid contains part of oil stains, the oil stains in the drug liquid can be filtered through the first conical filter screen 9, the drug liquid penetrating the first conical filter screen 9 falls into the inside of the containing box 2, and the relatively clean drug liquid is sent into the inside of the bubble box 1 by the circulating assembly, through the filtering and circulating mode, the oil stains in the drug liquid in the bubble box 1 are reduced as much as possible, the PCB board is prevented from being secondarily polluted, and the oil stain removing effect is improved.

[0044] The cleaning rope 22 can be made of polypropylene material and has certain hardness and toughness, when the cleaning rope 22 reciprocally slides on the surface of the first conical filter screen 9, the oil stains remaining on and blocking the mesh holes of the first conical filter screen 9 can be scraped off, the cleaning rope 22 can be self-adaptively expanded or contracted along the surface of the first conical filter screen 9 when moving through the control assembly, and the state that the cleaning rope 22 is attached to the surface of the first conical filter screen 9 is always ensured.

[0045] A second conical filter screen 32 is fixedly installed in the inside of the first conical filter screen 9, a space is left between the second conical filter screen 32 and the first conical filter screen 9, a third conical filter screen 33 is rotatably installed on the inner wall of the second conical filter screen 32, and the mesh hole opening positions are correspondingly arranged;

[0046] The drug liquid penetrating the first conical filter screen 9 can enter the inside of the containing box 2 again through the second conical filter screen 32 and the third conical filter screen 33, the mesh hole sizes of the first conical filter screen 9, the second conical filter screen 32 and the third conical filter screen 33 are consistent, when the third conical filter screen 33 rotates, the mesh holes of the second conical filter screen 32 are dislocated, at this time, the drug liquid cannot enter the inside of the containing box 2 through the third conical filter screen 33, and the only outlet between the first conical filter screen 9 and the second conical filter screen 32 is the mesh hole of the first conical filter screen 9.

[0047] A water feeding pipe 25 is fixedly installed in the inside of the first conical filter screen 9, a first water hole 41 and a second water hole 42 are arranged on the water feeding pipe 25, the first water hole 41 is located outside the first conical filter screen 9, and the second water hole 42 is located inside the first conical filter screen 9;

[0048] A water pumping assembly is arranged in the inside of the containing box 2 and used for feeding the water in the containing box 2 into the water feeding pipe 25.

[0049] Firstly, the oil stains on the surface of the first conical filter screen 9 are scraped by reciprocating sliding of the cleaning rope 22 on the surface of the first conical filter screen 9, then the third conical filter screen 33 is controlled to rotate, so that the mesh holes on the third conical filter screen 33 and the second conical filter screen 32 are dislocated, and then the pump water assembly is arranged to pump the liquid medicine in the containing box 2 into the water feeding pipe 25, at this time, the liquid medicine is discharged through the second water hole 42 and stored in the cavity between the first conical filter screen 9 and the second conical filter screen 32, until the cavity is completely filled with the liquid medicine, and the oil stains scraped into the mesh holes of the first conical filter screen 9 by the cleaning rope 22 are pushed out under the pressure of the liquid, so as to keep the mesh holes of the first conical filter screen 9 unblocked, when the pump water assembly pumps the liquid medicine into the water feeding pipe 25, part of the liquid medicine is discharged from the first water hole 41 and falls on the surface of the first conical filter screen 9, so as to solve the problem that dry oil stains are adhered to the surface of the filter screen due to capillary adsorption and molecular adhesion, and after being soaked by the liquid medicine, the adhesion of the dry oil stains to the first conical filter screen 9 is cut off, so that the cleaning rope 22 can scrape off the oil stains.

[0050] By controlling the directional circulation of the liquid medicine in the bubble box 1, cooperating with the water filter cylinder 8, the oil stains in the circulating liquid medicine are captured and sent back to the bubble box 1, which not only reduces the secondary pollution of the PCB board by the suspended oil stains in the bubble box 1, but also prolongs the service life of the liquid medicine.

[0051] The control assembly includes a moving block 19, a control line block 20 and a moving line wheel 21, the moving block 19 is slidingly installed in the inside of the water filter cylinder 8, the control line block 20 is installed on the moving block 19 through a plurality of telescopic rods, an elastic winding wheel is elastically installed in the inside of the control line block 20, the moving line wheel 21 is rotatably installed at the bottom of the control line block 20 and is attached to the first conical filter screen 9, and the two ends of the cleaning rope 22 are fixedly connected with the winding wheel through the control line block 20.

[0052] The moving block 19 can drive the control line block 20 and the moving line wheel 21 to slide up and down in the inside of the water filter cylinder 8, at this time, the moving line wheel 21 slides on the surface of the first conical filter screen 9, and the moving line wheel 21 rolls through friction, and at the same time, the cleaning rope 22 is expanded and contracted, when the moving line wheel 21 is driven to move downward, the winding wheel is unwound, so that the cleaning rope 22 is expanded according to the shape of the first conical filter screen 9, when the moving line wheel 21 slides upward, the winding wheel is reset and rotated through elasticity, so as to wind the cleaning rope 22, so that the cleaning rope 22 is contracted according to the outer wall of the first conical filter screen 9.

[0053] The pump water assembly comprises a pump water cylinder 16, a water suction pipe 17, a water outlet pipe 18 and a piston 15, the pump water cylinder 16 is fixedly installed in the inside of the containing box 2, the piston 15 is slidingly installed in the inside of the pump water cylinder 16, the water suction pipe 17 and the water outlet pipe 18 are both arranged on the pump water cylinder 16, the other end of the water suction pipe 17 extends to the bottom of the inner wall of the containing box 2, the other end of the water outlet pipe 18 extends to the inside of the water delivery pipe 25, and the water suction pipe 17 and the water outlet pipe 18 are both provided with a one-way valve.

[0054] The one-way valve arranged on the water suction pipe 17 can only allow the flow from the containing box 2 to the pump water cylinder 16, and the one-way valve arranged on the water delivery pipe 25 can only allow the flow from the pump water cylinder 16 to the water delivery pipe 25.

[0055] When the piston 15 slides from bottom to top in the inside of the pump water cylinder 16, the water in the containing box 2 can be sucked into the inside of the pump water cylinder 16 by the water suction pipe 17, and when the piston 15 slides from top to bottom in the inside of the pump water cylinder 16, the water in the pump water cylinder 16 can be pumped into the inside of the water delivery pipe 25 by the water outlet pipe 18.

[0056] The inside of the containing box 2 is fixedly installed with a driving motor 10, the output shaft of the driving motor 10 is fixedly installed with a reciprocating screw rod 13, the inside of the reciprocating screw rod 13 is threadedly connected with a sliding rod 14, and the other end of the sliding rod 14 extends into the pump water cylinder 16 and is fixedly connected with the piston 15.

[0057] When the driving motor 10 is started, the reciprocating screw rod 13 can be driven to rotate, at this time, the sliding rod 14 can drive the piston 15 to reciprocally slide in the inside of the pump water cylinder 16, and the containing box 2 can be controlled to send the liquid medicine into the inside of the water delivery pipe 25 in cooperation with the water suction pipe 17 and the water outlet pipe 18, then the third conical filter screen 33 is controlled to rotate, the mesh holes on the third conical filter screen 33 and the second conical filter screen 32 are dislocated, at this time, the liquid medicine can be discharged through the second water hole 42, stored in the cavity between the first conical filter screen 9 and the second conical filter screen 32, and the oil stains scraped into the mesh holes of the first conical filter screen 9 by the cleaning rope strip 22 can be pushed out by the pressure of the liquid medicine, so that the mesh holes of the first conical filter screen 9 are kept unblocked, and the filtering capacity of the water filter cylinder 8 for the oil stains in the liquid medicine is improved.

[0058] The bottom end of the third conical filter screen 33 is fixedly installed with a rotating ring 29, the outer wall of the rotating ring 29 is fixedly installed with a guide rod 30, the inner wall of the first conical filter screen 9 is provided with an arc-shaped groove 31, and one end of the guide rod 30 extends into the inside of the arc-shaped groove 31.

[0059] The inside of the third conical filter screen 33 is fixedly installed with a rotating rod 24 through a connecting rod, the water delivery pipe 25 is rotatably installed in the inside of the rotating rod 24, the rotating rod 24 is fixedly installed with a driven wheel 12, the reciprocating screw rod 13 is fixedly installed with a driving wheel 11, and the driving wheel 11 and the driven wheel 12 are connected through a belt.

[0060] When the driving motor 10 rotates, the driving wheel 11 and the driven wheel 12 can drive the rotating rod 24 to rotate at the same time. The rotating rod 24 is hollowly arranged, one end of the water outlet pipe 18 is rotatably connected to the bottom end of the rotating rod 24, and the other end of the rotating rod 24 is rotatably connected to the water conveying pipe 25. The water outlet pipe 18 can send the liquid medicine into the water conveying pipe 25 without affecting the rotation of the rotating rod 24. When the rotating rod 24 rotates, it can drive the third conical filter screen 33 and the guide rod 30 to slide in the arc-shaped groove 31 for a short distance until it slides to the end. At this time, the first conical filter screen 9 and the second conical filter screen 32 can rotate at the same time, and the mesh holes on the second conical filter screen 32 and the third conical filter screen 33 are also in a staggered state. The guide rod 30 and the arc-shaped groove 31 are provided with a reset spring. When the rotating rod 24 and the third conical filter screen 33 stop rotating, the reset spring releases the elastic potential energy to control the second conical filter screen 32 and the first conical filter screen 9 to separate from the third conical filter screen 33, and the mesh holes on the second conical filter screen 32 and the third conical filter screen 33 re-correspond.

[0061] Since the cleaning rope 22 can scrape the oil stains on the surface of the first conical filter screen 9 downward, the oil stains at the lowermost part of the surface of the first conical filter screen 9 can be thrown on the inner wall of the water filtering cylinder 8 by the rotation of the first conical filter screen 9 through the centrifugal force, which is convenient for subsequent cleaning.

[0062] The bottom of the water filtering cylinder 8 is fixedly provided with a dreg discharging pipe 26, the inside of the dreg discharging pipe 26 is provided with a conveying auger 27, and the outer wall of the first conical filter screen 9 is elastically provided with a scraper 28.

[0063] The inside of the containing box 2 is rotatably provided with a reciprocating screw rod 23, the moving block 19 is slidably arranged on the outer wall of the reciprocating screw rod 23, the reciprocating screw rod 23 is fixedly connected with the conveying auger 27, and the outer wall of the reciprocating screw rod 23 is slidably provided with a plug 44 for plugging the dreg discharging pipe 26.

[0064] When the reciprocating screw rod 23 rotates, the moving block 19 will first slide up and down, so that the cleaning rope 22 slides up and down on the outer wall of the first conical filter screen 9, and the conveying auger 27 is driven to rotate, so that the oil stains scraped from the first conical filter screen 9 can be discharged.

[0065] The plug 44 can slide downward on the outer wall of the reciprocating screw rod 23 and plug the opening of the dreg discharging pipe 26. When the plug 44 slides upward, the plugging of the plug 44 to the dreg discharging pipe 26 can be released.

[0066] The outer wall of the first conical filter screen 9 is fixedly provided with a transmission gear 43, the outer wall of the plug 44 is fixedly provided with a rotating gear, the inner wall of the containing box 2 is fixedly provided with a positioning ring 48, the inner wall of the positioning ring 48 is rotatably provided with a control cylinder 50, and the positioning ring 48 is inserted with the control cylinder 50 through the inclined clamping block 49.

[0067] The sliding cylinder 45 is elastically mounted in the control cylinder 50, a tension spring is arranged between the sliding cylinder 45 and the control cylinder 50, the outer wall of the sliding cylinder 45 is fixedly mounted with the guide block 47, the inner wall of the control cylinder 50 is provided with the spiral groove 46, and the sliding cylinder 45 is fixedly mounted at the top end of the plug 44.

[0068] When the rotating rod 24 drives the first conical filter screen 9 to rotate, the plug 44 is driven to rotate through the transmission gear 43 mounted on the outer wall, and the reciprocating threaded rod 23 is simultaneously driven to rotate at the same time, so that the plug 44 drives the sliding cylinder 45 and the guide block 47 to slide in the spiral groove 46, the sliding cylinder 45 drives the plug 44 to slide upwards in the control cylinder 50, and the tension spring is pressed, when the guide block 47 slides to the end of the spiral groove 46, the control cylinder 50 is driven to rotate in the positioning ring 48 at this time, and the rotation of the first conical filter screen 9 is not affected, when the first conical filter screen 9 stops rotating, the elastic potential energy of the tension spring is released, the sliding cylinder 45 moves away from the control cylinder 50, and the plug 44 blocks the opening of the impurity discharge pipe 26 again.

[0069] The scraper 28 arranged on the outer wall of the first conical filter screen 9 can push the oil stains falling on the bottom of the filter cylinder 8 to the opening of the impurity discharge pipe 26.

[0070] The outer wall of the water feeding pipe 25 is fixedly mounted with the annular water box 34, the annular water box 34 is communicated with the water feeding pipe 25, the outer wall of the water feeding pipe 25 is slidably mounted with the blocking ring 40, the inner part of the annular water box 34 is provided with the annular float 36, the top end of the annular float 36 is connected with the top part of the blocking ring 40 through the transmission rope 39.

[0071] The inner part of the annular water box 34 is slidably mounted with the plug rod 37, the top end of the plug rod 37 extends out of the top part of the annular water box 34 and is fixedly mounted with the water pressure plate 38, and the water pressure plate 38 is provided with the pressing spring between the annular water box 34.

[0072] When the rotating rod 24 rotates, the pump water assembly will send clean liquid medicine into the inside of the water pipe 25 at this time, part of the liquid medicine enters between the first conical filter screen 9 and the second conical filter screen 32 through the second water hole 42, and part of the liquid medicine is sprayed on the surface of the first conical filter screen 9 through the first water hole 41, which is used for softening oil stains, and finally part of the liquid medicine impacts on the top of the water pipe 25 and enters the inside of the annular water box 34 through the hole, with the liquid level of the liquid medicine rising, the annular float 36 will be driven to slide upward in the annular water box 34, and through the transmission rope 39, the blocking ring 40 will slide downward on the outer wall of the water pipe 25 together, until the first water hole 41 is completely blocked, because the first water hole 41 is blocked, the flow rate of the liquid medicine discharged through the second water hole 42 increases, further accelerating the accumulation of the liquid medicine in the chamber between the first conical filter screen 9 and the second conical filter screen 32, and thereby improving the efficiency of cleaning the mesh holes on the first conical filter screen 9.

[0073] When the first conical filter screen 9 is cleaned in the application, the circulating pump 3 needs to be closed, and the driving motor 10 can be started only when the liquid medicine in the bubble tank 1 cannot be discharged through the blow-off pipe 35. After cleaning is completed, the circulating pump 3 is continued to be started, at this time, the liquid medicine discharged through the blow-off pipe 35 will impact on the water pressure plate 38, so that the water pressure plate 38 drives the plug rod 37 to slide downward, and the blocking of the bottom of the annular water box 34 is released, at this time, the liquid medicine in the annular water box 34 will be discharged, the annular float 36 slides downward, and through the transmission rope 39, the blocking ring 40 is driven to slide upward, and the blocking of the first water hole 41 is released.

[0074] The above-mentioned front, rear, left, right, up, down are based on the drawings in the specification Figure 1 As a standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0075] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the application.

[0076] The basic principles, main features and advantages of the application are shown and described above. Those skilled in the art should understand that the application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the application, and various changes and improvements can be made to the application without departing from the spirit and scope of the application, and these changes and improvements all fall within the scope of the application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. A fully automatic PCB hole metallization device for PCB board manufacturing, comprising a immersion tank (1) for immersing PCB boards and a receiving tank (2) disposed below the immersion tank (1); Its features are: A drain pipe (4) is provided on one side of the bubble tank (1), and a water outlet chamber (6) is separated at the other end of the bubble tank (1) by a partition (5). Multiple water outlets (7) are provided on the partition (5). The water outlet chamber (6) is connected to the container (2) through a sewage pipe (35). A circulation component is provided on the container (2) for connecting the container (2) and the drain pipe (4). The container (2) is provided with a filter cylinder (8) with an open top. The filter cylinder (8) is provided with a first conical filter screen (9) with the tip pointing upward. A cleaning rope (22) is fitted on the first conical filter screen (9). The filter cylinder (8) is provided with a control component for controlling the expansion or contraction of the cleaning rope (22). A second conical filter (32) is fixedly installed inside the first conical filter (9), and there is a space between the second conical filter (32) and the first conical filter (9). A third conical filter (33) is rotatably installed on the inner wall of the second conical filter (32), and the mesh opening positions are corresponding. A water supply pipe (25) is fixedly installed inside the first conical filter screen (9). The water supply pipe (25) has a first water hole (41) and a second water hole (42). The first water hole (41) is located outside the first conical filter screen (9), and the second water hole (42) is located inside the first conical filter screen (9). The container (2) is equipped with a water pump assembly for sending water from inside the container (2) into the water supply pipe (25).

2. The fully automatic PCB hole metallization device for PCB board manufacturing according to claim 1, characterized in that: The control component includes a moving block (19), a control line block (20), and a moving reel (21). The moving block (19) is slidably installed inside the filter cylinder (8). The control line block (20) is installed on the moving block (19) via a multi-stage telescopic rod. A winding wheel is elastically installed inside the control line block (20). The moving reel (21) is rotatably installed at the bottom of the control line block (20) and is in contact with the first conical filter screen (9). The two ends of the cleaning rope (22) pass around the control line block (20) and are fixedly connected to the winding wheel.

3. The fully automatic PCB hole metallization device for PCB board manufacturing according to claim 2, characterized in that: The water pump assembly includes a pump cylinder (16), a suction pipe (17), an outlet pipe (18), and a piston (15). The pump cylinder (16) is fixedly installed inside the housing (2). The piston (15) is slidably installed inside the pump cylinder (16). The suction pipe (17) and the outlet pipe (18) are both installed on the pump cylinder (16). The other end of the suction pipe (17) extends to the bottom of the inner wall of the housing (2). The other end of the outlet pipe (18) extends to the inside of the water delivery pipe (25). A one-way valve is provided on both the suction pipe (17) and the outlet pipe (18).

4. The fully automatic PCB hole metallization device for PCB board manufacturing according to claim 3, characterized in that: A drive motor (10) is fixedly installed inside the container (2). A reciprocating screw (13) is fixedly installed on the output shaft of the drive motor (10). A sliding rod (14) is threadedly connected inside the reciprocating screw (13). The other end of the sliding rod (14) extends into the pump cylinder (16) and is fixedly connected to the piston (15).

5. The fully automatic PCB hole metallization device for PCB board manufacturing according to claim 4, characterized in that: A rotating ring (29) is fixedly installed at the bottom end of the third conical filter (33), and a guide rod (30) is fixedly installed on the outer wall of the rotating ring (29). An arc groove (31) is opened on the inner wall of the first conical filter (9), and one end of the guide rod (30) extends into the interior of the arc groove (31). The third conical filter screen (33) has a rotating rod (24) fixedly installed inside by a connecting rod. The water supply pipe (25) is rotatably installed inside the rotating rod (24). A driven wheel (12) is fixedly installed on the rotating rod (24). A driving wheel (11) is fixedly installed on the reciprocating screw (13). The driving wheel (11) and the driven wheel (12) are connected by a belt.

6. The fully automatic PCB hole metallization device for PCB board manufacturing according to claim 5, characterized in that: The bottom of the filter cylinder (8) is fixedly installed with a discharge pipe (26), and a conveying auger (27) is provided inside the discharge pipe (26). A scraper (28) is elastically installed on the outer wall of the first conical filter screen (9). The reciprocating threaded rod (23) is rotatably installed inside the container (2). The moving block (19) is slidably installed on the outer wall of the reciprocating threaded rod (23). The reciprocating threaded rod (23) is fixedly connected to the conveying auger (27). A plug (44) for sealing the discharge pipe (26) is slidably installed on the outer wall of the reciprocating threaded rod (23).

7. The fully automatic PCB hole metallization device for PCB board manufacturing according to claim 6, characterized in that: A transmission gear (43) is fixedly installed on the outer wall of the first conical filter screen (9), a rotating gear is fixedly installed on the outer wall of the plug (44), a positioning ring (48) is fixedly installed on the inner wall of the receiving box (2), a control cylinder (50) is rotatably installed on the inner wall of the positioning ring (48), and the positioning ring (48) is inserted into the control cylinder (50) through an inclined locking block (49); The control cylinder (50) has a sliding cylinder (45) elastically installed inside. A guide block (47) is fixedly installed on the outer wall of the sliding cylinder (45). A spiral groove (46) is opened on the inner wall of the control cylinder (50). The sliding cylinder (45) is fixedly installed on the top of the block (44).

8. The fully automatic PCB hole metallization device for PCB board manufacturing according to claim 7, characterized in that: An annular water box (34) is fixedly installed on the outer wall of the water supply pipe (25). The annular water box (34) is connected to the water supply pipe (25). A blocking ring (40) is slidably installed on the outer wall of the water supply pipe (25). An annular float (36) is provided inside the annular water box (34). The top of the annular float (36) is connected to the top of the blocking ring (40) through a transmission rope (39). A stopper rod (37) is slidably installed inside the annular water box (34). The top end of the stopper rod (37) extends out of the top of the annular water box (34) and is fixedly installed with a water pressure plate (38). A top pressure spring is provided between the water pressure plate (38) and the annular water box (34).

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