Circuit board processing equipment and method

Abstract

The invention discloses circuit board processing equipment and a circuit board processing method. The circuit board processing equipment comprises a wax sealing machine and a smoke exhaust unit, the smoke exhaust unit comprises an exhaust unit, a filter box, an atomizer, sponge and an auxiliary fan; the exhaust unit is arranged at the top of the wax sealing machine; the filter box is arranged on one side of the wax sealing machine, clean water is stored in the filter box, the end of the exhaust unit extends into the filter box and extends below the liquid level of the clean water, and the exhaust unit is used for introducing air in the wax sealing machine into the filter box; the atomizer is arranged on the side wall of the filter box and is used for spraying water mist into the filter box; the sponge is arranged at the top of the filter box; the auxiliary fan is arranged at the upper part of the sponge and is used for exhausting gas in the filter box. The problems that gasified wax diffuses and is inhaled by workers or attached to equipment are avoided, and the problems that a traditional smoke exhaust unit pollutes the environment, a filter screen is difficult to clean and the use cost is high are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit board three-proofing process, in particular to a circuit board processing equipment and method. BACKGROUND

[0002] The current circuit board three-proofing process mainly uses three-proofing paint containing a large amount of solvent for protection, and is constructed by manual brushing, dipping or spraying, etc. In the operation process, a large amount of waste gas is released, which affects the environmental quality and also harms the health of the operators.

[0003] In the prior art, for example, a circuit board wax sealing equipment is disclosed in Chinese utility model patent (authorized publication number CN213024099U), which comprises a main frame and a smoke exhaust device. The main frame has a wax sealing operation space, which is formed by the operation platform of the main frame and the smoke exhaust device of the smoke exhaust device. The main frame is provided with a liquid wax spraying device, and the liquid wax spraying device has a liquid wax spraying port corresponding to the platform opening of the operation platform. The equipment also comprises a constant temperature control device and a main control device. The smoke exhaust device can exhaust and collect the smoke generated in the wax sealing operation space. The constant temperature control device can adjust the temperature of the wax sealing operation space, and the main control device can control the operation of the liquid wax spraying device, the smoke exhaust device and the constant temperature control device.

[0004] The above prior art avoids the accumulation of gasified wax in the wax sealing equipment by setting a smoke exhaust device. However, the gasified wax will solidify when it encounters cold, resulting in layer-by-layer attachment of the solidified wax on the inner wall of the smoke exhaust device. Moreover, the gasified wax cannot be filtered by a traditional filter screen. When the wax adheres to the filter screen and cools down, it will quickly block the filter screen. Therefore, the filter screen needs to be frequently replaced during use, which seriously affects the production efficiency and increases the use cost. SUMMARY

[0005] In view of the above problems, a circuit board processing equipment and method are provided. A smoke exhaust unit comprising an exhaust unit, a filter box, an atomizer, a sponge and an auxiliary fan is arranged on the wax sealing machine of the circuit board processing equipment. The exhaust unit is used to exhaust the air mixed with gasified wax into the clean water in the filter box, so that the gasified wax is condensed into wax particles and settles at the bottom of the filter box. Since the gasified wax quickly solidifies after contacting with water, it will not adhere to the bottom of the filter box. At the same time, the atomizer sprays water mist after being cooled down, so that a small amount of gasified wax rising with the airflow is condensed and falls off, further improving the filtering effect of the gasified wax. In addition, the sponge can adsorb and intercept water vapor and part of the wax particles. At the same time, the atomized water increases the water content of the sponge, so that water droplets continuously appear at the bottom of the sponge, and the self-cleaning is realized by mixing the water droplets with the wax particles.

[0006] To solve the prior art problems, the application provides a circuit board processing equipment comprising a wax sealing machine and a smoke exhaust unit; characterized in that the smoke exhaust unit comprises an exhaust unit, a filter box, an atomizer, a sponge and an auxiliary fan; The exhaust unit is arranged at the top of the wax sealing machine; The filter box is arranged at one side of the wax sealing machine, the filter box contains clean water, the end of the exhaust unit extends into the filter box and is immersed below the liquid level of the clean water, and the exhaust unit is used for introducing air in the wax sealing machine into the filter box; The atomizer is arranged on the side wall of the filter box, and the atomizer is used for spraying water mist into the filter box; The sponge is arranged at the top of the filter box; The auxiliary fan is arranged at the upper part of the sponge, and the auxiliary fan is used for exhausting the gas in the filter box.

[0007] Preferably, a discharge unit is arranged at the bottom of the filter box, the discharge unit comprises a spiral blade, a first rotary driver and a valve body; The spiral blade is arranged at the bottom of the filter box and rotates along the length direction of the filter box; The first rotary driver is horizontally arranged on the side wall of the filter box and is used for driving the spiral blade; An exhaust port is formed in the side wall of the filter box at the side of the end of the spiral blade, and the valve body is arranged on the exhaust port.

[0008] Preferably, the exhaust unit comprises an exhaust cover, an exhaust pipe, an air pump and an exhaust assembly; The exhaust cover is in an inverted funnel structure, and the exhaust cover is arranged at the upper part of the wax sealing machine; The two ends of the exhaust pipe are connected with the upper part of the exhaust cover and the upper part of the filter box respectively, the exhaust pipe is covered with heat preservation material, and the exhaust pipe is arranged in an inverted U shape; The air pump is arranged on the exhaust pipe; The exhaust assembly is arranged at the bottom of the exhaust pipe and extends to the filter box.

[0009] Preferably, a flow guide cover is arranged at the inner side of the exhaust cover, the flow guide cover is in an inverted funnel structure, there is an annular gap between the flow guide cover and the exhaust cover, the diameter of the opening at the upper part of the flow guide cover is smaller than the diameter of the opening at the upper part of the exhaust cover, an extension plate is arranged below the flow guide cover, the extension plate is in an annular structure and is fixedly arranged on the exhaust cover, the lower part of the flow guide cover extends to the upper part of the extension plate, and the flow guide cover is used for guiding the liquid wax to be discharged.

[0010] Preferably, the collection assembly comprises an annular bin, a material falling port, a scraper, a collection box and a condenser pipe; The annular bin is sleeved on the periphery of the exhaust cover, the annular bin is located at the lower part of the extension plate, and the extension plate can guide the liquid wax into the annular bin; The material dropping port is arranged at the bottom of the annular bin; The scraper is arranged in the annular bin and rotates around the axis of the annular bin, and the scraper is always in contact with and slidingly matched with the inner wall of the annular bin; The collecting box is arranged at the lower part of the annular bin and is communicated with the annular bin; The condensing pipe is arranged at the bottom of the annular bin.

[0011] Preferably, a heating plate is arranged at the upper part of the exhaust cover.

[0012] Preferably, the exhaust assembly comprises a gas distribution pipe, a gas outlet pipe, a pushing block and a driving unit; The gas distribution pipe is arranged at the end of the exhaust pipe on one side of the filter box, and the gas distribution pipe has two branches and is submerged in the clean water; The gas outlet pipe is provided with two, and the two gas outlet pipes are coaxially arranged on the two branches; The two ends of the pushing block extend into the two gas outlet pipes and are slidingly matched with the two gas outlet pipes, respectively; The driving unit is arranged at the upper part of the pushing block, and the driving unit is used for driving the pushing block to reciprocate along the arrangement direction of the two gas outlet pipes.

[0013] Preferably, the driving unit comprises a third rotary driver, a rotating disc, a sliding groove and an extension column; The third rotary driver is vertically arranged at the upper part of the pushing block; The rotating disc is fixedly arranged on the output end of the third rotary driver; The sliding groove is horizontally arranged at the upper part of the pushing block, and the extension direction of the sliding groove is perpendicular to the arrangement direction of the two gas outlet pipes; The extension column is fixedly arranged at the end of the rotating disc, and the axis of the extension column is not collinear with the axis of the rotating disc, the extension column extends into the sliding groove and is slidingly matched with the sliding groove.

[0014] Preferably, the exhaust assembly further comprises a scraper and a linear driver; The scraper is provided with two, and the two scrapers are located at the ends of the two gas outlet pipes, the two scrapers are alternately lifted along the vertical direction, and the scraper is used for scraping the solidified wax on the pushing block; The linear driver is arranged at the upper part of the scraper and is used for driving the scraper to move.

[0015] The application also relates to a circuit board processing method, and the circuit board processing device is used, and the specific steps are as follows: S1, the air in the wax sealing machine is extracted into the filter box by the exhaust unit, the gasified wax mixed in the air is cooled to form wax particles after being contacted with the clean water, and the wax particles fall into the bottom of the filter box; S2, the partially not completely cooled gasified wax rises to the upper portion of the clean water with the air, the atomizer sprays the atomized water into the filter box, the partially not completely cooled gasified wax is cooled and falls after contacting with the water vapor; S3, the rising air is discharged after passing through the sponge.

[0016] The beneficial effects of the present application compared with the prior art are: 1, the present application sets up the smoke exhaust unit containing exhaust unit, filter box, atomizer, sponge and auxiliary fan on the wax sealing machine of the circuit board processing equipment, the air mixed with gasified wax is exhausted into the clean water in the filter box by the exhaust unit, the gasified wax is condensed into wax particles and falls to the bottom of the filter box, and because the gasified wax is quickly solidified after contacting with the water, it will not adhere to the bottom of the filter box, at the same time, the atomizer sprays the water mist after cooling, so that a small amount of gasified wax rising with the airflow is condensed and falls, further improving the filtering effect of the gasified wax. In addition, the sponge can adsorb and intercept water vapor and part of wax particles, and the atomized water increases the water content of the sponge, so that water droplets continuously appear at the bottom of the sponge, and the self-cleaning is realized by mixing water droplets and wax particles, avoiding the diffusion of gasified wax being inhaled by workers or adhering to the equipment, solving the problems of traditional smoke exhaust unit, difficult cleaning of filter screen and high use cost.

[0017] 2, by wrapping the exhaust pipe with heat preservation material, the cooling speed of the gasified wax is reduced when passing through the exhaust pipe, at the same time, the exhaust pipe is set to inverted U shape, avoiding the condensation phenomenon of gasified wax on the inner wall of the exhaust pipe, and the liquid wax adhering to the inner wall of the exhaust pipe cannot form accumulation in the exhaust pipe due to the shape of the exhaust pipe. The liquid wax adhering to the inner wall of the exhaust pipe is discharged from both ends of the exhaust pipe. By setting the drainage cover and the extension plate, and setting the heating plate on the exhaust cover, the liquid wax is prevented from dripping into the working area of the wax sealing machine when flowing back to the upper part of the wax sealing machine, and the heating plate can prevent the flowing back liquid wax from solidifying.

[0018] 3, by setting two air outlet pipes and setting the pushing block to alternately clean the two air outlet pipes, the air outlet pipes are prevented from being blocked by the solidified wax, and the end of the pushing block is scraped by the scraper to prevent the wax from solidifying on the end of the pushing block and moving synchronously with the pushing block, causing the air outlet pipe to be blocked. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a three-dimensional schematic view of a circuit board processing equipment of the present application Figure 1 .

[0020] Figure 2 is a three-dimensional schematic view of a circuit board processing equipment of the present application Figure 2 .

[0021] Figure 3is a side view of a circuit board processing apparatus of the present application.

[0022] Figure 4 is a side view of a circuit board processing apparatus of the present application. Figure 3 is a sectional view of the A-A section in the above-mentioned circuit board processing apparatus.

[0023] Figure 5 is a sectional view of the circuit board processing apparatus of the present application. Figure 1 .

[0024] Figure 6 is a sectional view of the circuit board processing apparatus of the present application. Figure 5 is an enlarged view of the B section in the above-mentioned circuit board processing apparatus.

[0025] Figure 7 is an enlarged view of the C section in the above-mentioned circuit board processing apparatus. Figure 5

[0026] Figure 8 is an enlarged view of the D section in the above-mentioned circuit board processing apparatus. Figure 5

[0027] Figure 9 is a sectional view of the circuit board processing apparatus of the present application. Figure 2 .

[0028] Figure 10 is a sectional view of the exhaust unit of the circuit board processing apparatus of the present application.

[0029] Figure 11 is a sectional view of the circuit board processing apparatus of the present application. Figure 3 .

[0030] Figure 12 is a sectional view of the exhaust unit of the circuit board processing apparatus of the present application.

[0031] ​​The reference signs in the figure are: 1, wax sealing machine; 2, smoke exhaust unit; 21, air exhaust unit; 211, air exhaust cover; 2111, air guide cover; 2112, extension plate; 2113, heating plate; 212, air exhaust pipe; 213, air pump; 214, air exhaust assembly; 2141, air distribution pipe; 2142, air outlet pipe; 2143, pushing block; 2144, third rotary driver; 2145, rotating disc; 2146, sliding groove; 2147, extension column; 2148, scraper; 2149, linear driver; 215, collection assembly; 2151, annular bin; 2152, material dropping port; 2153, scraper plate; 2154, collection box; 2155, condensing pipe; 2156, second rotary driver; 2157, gear; 2158, gear ring; 22, filter box; 23, atomizer; 24, sponge; 25, auxiliary fan; 26, material discharge unit; 261, helical blade; 262, first rotary driver; 263, valve body. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application will be described in further detail below with reference to the drawings and specific embodiments.

[0033] REFERENCE Figures 1-4 , Figure 9 and Figure 11 : A circuit board processing device, comprising a wax sealing machine 1 and a smoke exhaust unit 2; The smoke exhaust unit 2 comprises an air exhaust unit 21, a filter box 22, an atomizer 23, a sponge 24 and an auxiliary fan 25; The air exhaust unit 21 is arranged on the top of the wax sealing machine 1; The filter box 22 is arranged on one side of the wax sealing machine 1, and clean water is stored in the filter box 22, the end of the air exhaust unit 21 extends into the filter box 22 and is immersed below the liquid level of the clean water, and the air exhaust unit 21 is used to introduce air in the wax sealing machine 1 into the filter box 22; The atomizer 23 is arranged on the side wall of the filter box 22, and the atomizer 23 is used to spray water mist into the filter box 22; The sponge 24 is arranged on the top of the filter box 22; The auxiliary fan 25 is arranged on the upper part of the sponge 24, and the auxiliary fan 25 is used to exhaust the gas in the filter box 22.

[0034] In the process of processing the circuit board, according to the use requirement of the circuit board, sometimes the circuit board needs to be waxed, in the process of waxing the circuit board by using the waxing machine 1, the wax needs to be melted into wax liquid, in the environment with high temperature, even if the temperature control component is set, the gasification wax cannot be avoided, so the exhaust unit 2 needs to be set on the upper part of the waxing machine 1, so that the exhaust unit 2 can extract the gasification wax in time, avoid the gasification wax from being inhaled by the staff or adhered to the equipment. The gasification wax adhered to the equipment will cool down quickly, and with the passage of time, the wax layer will be wrapped on the outside of the equipment, which is difficult to clean. In addition, the traditional exhaust unit 2 can only exhaust the air containing gasification wax, which pollutes the environment greatly, if the existing filtering equipment is used, the filtering requirement of the gasification wax cannot be met, because most of the filtering equipment uses filter screen to filter, and the gasification wax will adhere to the filter screen when passing through the filter screen, and with the decrease of temperature, the gasification wax will condense on the surface of the filter screen, which causes the filter screen to be unable to be cleaned, and only can be replaced, which is too high in use cost.

[0035] In order to avoid the above situation, the existing exhaust unit 2 of the circuit board waxing machine 1 is optimized and designed, so that the gasification wax can be exhausted through the exhaust unit 2, and the exhaust unit 2 is not provided with a filter screen, which avoids the problem that the gasification wax is difficult to clean when adhering to the filter screen, and the exhaust unit 2 can also realize the filtering effect of the gasification wax. The specific structure and working process of the present application are as follows: When the wax sealing machine 1 starts to run, the heated wax is gasified, a small amount of gasified wax diffuses into the air, the exhaust unit 21 exhausts the air in the wax sealing machine 1, and the gasified wax is also exhausted with the air. The exhaust unit 21 has a positive air exhaust function. When the exhaust unit 21 exhausts the air mixed with the gasified wax into the filter box 22, the air mixed with the gasified wax is injected into the clean water in the filter box 22, the clean water rapidly cools the air, and then the gasified wax mixed in the air is cooled and condensed. The condensed gasified wax is wax particles, which are settled to the bottom of the filter box 22 under the action of their own gravity. Since the adhesion of the condensed wax particles is greatly reduced, and the filter box 22 contains clean water, the settled wax particles will not adhere to the bottom of the filter box 22. The air injected into the clean water by the exhaust unit 21 will flow from bottom to top and form bubbles in the clean water, so a small amount of gasified wax in the bubbles is not cooled in time and rises with the air. When the air leaves the clean water, the gasified wax mixed in the bubbles diffuses freely. At this time, the atomizer 23 continuously sprays water mist into the filter box 22, and the water mist is distributed on the upper part of the clean water surface. The gasified wax rising with the air flow is in full contact with the water mist. It is worth noting that the water mist is sprayed before being cooled, so the water mist has a low temperature, which ensures that a small amount of gasified wax rising with the air flow can be quickly condensed and fall back into the filter box 22 after contacting the water mist. At the same time, in order to avoid water vapor from being discharged from the upper part of the filter box 22, a sponge 24 is also arranged at the upper part of the filter box 22 to adsorb and intercept the water vapor. However, the sponge 24 after adsorbing the water vapor will hinder the flow of the air flow, causing the load of the exhaust unit 21 to increase. In order to reduce the load of the exhaust unit 21, an auxiliary fan 25 is arranged at the upper part of the sponge 24 to ensure that the air flow can flow smoothly after wetting the sponge 24. The sponge 24 can also intercept part of the condensed wax particles. The intercepted wax particles have been solidified and shaped, so they will not adhere to the bottom of the sponge 24. Since atomized water will continuously flow into the sponge 24 with the air, the water content in the sponge 24 will continuously increase, causing water droplets to accumulate at the bottom of the sponge 24. The water droplets mix with the wax particles attached to the bottom of the sponge 24 and carry the wax particles to fall together, thereby achieving self-cleaning of the sponge 24.

[0036] By setting the smoke exhaust unit 2 containing the exhaust unit 21, the filter box 22, the atomizer 23, the sponge 24 and the auxiliary fan 25 on the wax sealing machine 1 of the circuit board processing equipment, the air mixed with the vaporized wax is exhausted into the clean water in the filter box 22 by the exhaust unit 21, the vaporized wax is condensed into wax particles and settled at the bottom of the filter box 22, and since the vaporized wax solidifies quickly after contacting with water, it will not adhere to the bottom of the filter box 22. At the same time, the atomizer 23 sprays water mist after cooling, so that a small amount of vaporized wax rising with the airflow condenses and falls, further improving the filtering effect of the vaporized wax. In addition, the sponge 24 can adsorb and intercept water vapor and part of the wax particles, and the atomized water increases the water content of the sponge 24, which further causes water droplets to gather at the bottom of the sponge 24. The self-cleaning is realized by mixing water droplets and wax particles, which avoids the diffusion of vaporized wax being inhaled by workers or adhering to the equipment, and solves the problems of traditional smoke exhaust unit 2 polluting the environment, difficult to clean the filter screen and high use cost.

[0037] With reference to Figure 9 And Figure 11 : The filter box 22 is provided with a discharge unit 26, and the discharge unit 26 includes a spiral blade 261, a first rotary driver 262 and a valve body 263; The spiral blade 261 is rotatably arranged at the bottom of the filter box 22 along the length direction of the filter box 22; The first rotary driver 262 is horizontally arranged on the side wall of the filter box 22 and used to drive the spiral blade 261; An exhaust port is formed in the side wall of the filter box 22 at one side of the end of the spiral blade 261, and the valve body 263 is arranged on the exhaust port.

[0038] When the wax sealing machine 1 is in normal operation, the exhaust unit 21 continuously discharges the gasified wax mixed with air into the filter box 22. When the gasified wax enters the filter box 22, it is first injected into the clean water, which cools the wax and causes the gasified wax to condense into wax particles and fall to the bottom of the filter box 22. The valve body 263 is periodically opened when the wax sealing machine 1 is in normal operation. This is because the atomizer 23 continuously discharges water into the filter box 22, causing the water level in the filter box 22 to continuously rise. When the valve body 263 is periodically opened, the water in the filter box 22 can be discharged in a controlled manner, ensuring that the filter box 22 does not become full of water. When the wax sealing machine 1 is being maintained, the valve body 263 is opened again, and the first rotary drive 262 drives the spiral blade 261 to rotate, causing the wax accumulated at the bottom of the filter box 22 to be discharged from the valve body 263. It is worth noting that because the size of the gasified wax is very small, and the size of the wax particles formed after cooling is also very small, the amount of wax particles accumulated at the bottom of the filter box 22 is limited during the normal operation period of the wax sealing machine 1, and part of the accumulated wax particles will be discharged during the water discharge process when the valve body 263 is periodically opened. At the same time, because there is clean water in the filter box 22, the wax particles are less likely to stick to the spiral blade 261 when they settle at the bottom of the filter box 22.

[0039] Referring to Figure 4 and Figures 6-8 The exhaust unit 21 includes an exhaust hood 211, an exhaust pipe 212, an air pump 213, and an exhaust assembly 214. The exhaust hood 211 is in the shape of an inverted funnel and is arranged at the upper part of the wax sealing machine 1. The two ends of the exhaust pipe 212 are respectively connected to the upper part of the exhaust hood 211 and the upper part of the filter box 22. The exhaust pipe 212 is covered with thermal insulation material on the outside, and is arranged in the shape of an inverted U. The air pump 213 is arranged on the exhaust pipe 212. The exhaust assembly 214 is arranged at the bottom of the exhaust pipe 212 and extends into the filter box 22.

[0040] Because the gasified wax condenses only after cooling, otherwise it is in a liquid state, by covering the exhaust pipe 212 with thermal insulation material, the cooling speed of the gasified wax when transported through the exhaust pipe 212 is reduced, and by arranging the exhaust pipe 212 in the shape of an inverted U, the condensation of the gasified wax on the inner wall of the exhaust pipe 212 is avoided, and the liquid wax adhering to the inner wall of the exhaust pipe 212 cannot form a pile in the exhaust pipe 212 due to the shape of the exhaust pipe 212. The liquid wax adhering to the inner wall of the exhaust pipe 212 is discharged from both ends of the exhaust pipe 212.

[0041] Referring to Figure 7 and Figure 8: A drainage cover 2111 is arranged on the inner side of the exhaust cover 211, the drainage cover 2111 is in an inverted funnel structure, and there is an annular gap between the drainage cover 2111 and the exhaust cover 211, the diameter of the opening at the upper part of the drainage cover 2111 is smaller than that of the exhaust cover 211, an extension plate 2112 is arranged below the drainage cover 2111, the extension plate 2112 is in an annular structure and is fixedly arranged on the exhaust cover 211, the lower part of the drainage cover 2111 extends to the upper part of the extension plate 2112, and the drainage cover 2111 is used for guiding the liquid wax to be discharged.

[0042] Since the exhaust pipe 212 is in an inverted U-shaped structure, the liquid wax attached to the inner wall of the exhaust pipe 212 will flow into the filter box 22 and the wax sealing machine 1 respectively, in order to avoid the liquid wax flowing into the wax sealing machine 1 from dripping, the drainage cover 2111 is arranged at the lower part of the exhaust cover 211, the drainage cover 2111 can receive the liquid wax, so that the liquid wax dripping from the exhaust pipe 212 is discharged from the annular gap into the extension plate 2112, and since the drainage cover 2111 is in an inverted funnel structure, part of the gaseous wax will be attached to the lower part of the drainage cover 2111, and liquid wax will be formed at the lower part of the drainage cover 2111, which will be discharged to the extension plate 2112 under the guidance of the drainage cover 2111, avoiding the liquid wax flowing back through the exhaust cover 211 and dripping into the wax sealing machine 1.

[0043] Referring to Figure 5 , Figure 8 and Figure 9 : The collection assembly 215 includes an annular bin 2151, a material falling port 2152, a scraper 2153, a collection box 2154, and a condensing pipe 2155; The annular bin 2151 is sleeved on the periphery of the exhaust cover 211, and the annular bin 2151 is located at the lower part of the extension plate 2112, and the extension plate 2112 can guide the liquid wax into the annular bin 2151; The material falling port 2152 is arranged at the bottom of the annular bin 2151; The scraper 2153 is arranged in the annular bin 2151 and rotates around the axis of the annular bin 2151, and the scraper 2153 is always in sliding fit with the inner wall of the annular bin 2151; The collection box 2154 is arranged at the lower part of the annular bin 2151 and communicates with the annular bin 2151; The condensing pipe 2155 is arranged at the bottom of the annular bin 2151.

[0044] When the extension plate 2112 guides the liquid wax into the annular bin 2151, the condensing pipe 2155 continuously cools the bottom of the annular bin 2151, so that the liquid wax falling into the annular bin 2151 is quickly solidified, while the scraper 2153 continuously rotates around the axis of the annular bin 2151, and the scraper 2153 scrapes the solidified wax in the annular bin 2151, avoiding the accumulation of the solidified wax at the bottom of the annular bin 2151. The wax scraped by the scraper 2153 is discharged from the discharge port 2152 into the collection box 2154. The collection box 2154 and the filter box 22 are both provided with a discharge unit 26. When the wax sealing machine 1 is normally operating, the discharge unit 26 located in the collection box 2154 is in a closed state, so that the airflow in the collection box 2154 does not flow at this time, avoiding the solidified wax in the annular bin 2151 from being smoothly discharged into the collection box 2154 through the discharge port 2152. The collection assembly 215 further comprises a second rotary driver 2156, a gear 2157 and a gear ring 2158. The second rotary driver 2156 is vertically arranged on one side of the exhaust hood 211. The gear 2157 is fixedly arranged on the output end of the second rotary driver 2156. The gear ring 2158 is rotationally arranged at the upper portion of the annular bin 2151 along the axis of the annular bin 2151. The scraper 2153 is fixedly connected with the gear ring 2158. The second rotary driver 2156 is preferably a servo motor.

[0045] With reference to Figure 7 and Figure 8 : The heating plate 2113 is arranged at the upper portion of the exhaust hood 211.

[0046] The heating plate 2113 can heat the exhaust hood 211, so that the gaseous wax extracted can always be in a gaseous state, and the backflow of the liquid wax cannot be condensed on the inner walls of the drainage hood 2111 and the exhaust hood 211.

[0047] With reference to Figure 6 , Figure 10 and Figure 12 : The exhaust assembly 214 comprises a gas distribution pipe 2141, a gas outlet pipe 2142, a push block 2143 and a driving unit. The gas distribution pipe 2141 is arranged at the end of the exhaust pipe 212 located on one side of the filter box 22. The gas distribution pipe 2141 has two branches, and the gas distribution pipe 2141 is immersed in clean water. The gas outlet pipe 2142 is provided with two, and the two gas outlet pipes 2142 are arranged on the two branches respectively, and the two gas outlet pipes 2142 are coaxially arranged horizontally. The two ends of the push block 2143 respectively extend into the two gas outlet pipes 2142 and are in sliding fit with the two gas outlet pipes 2142 respectively. The driving unit is arranged at the upper portion of the push block 2143, and the driving unit is used to drive the push block 2143 to reciprocate along the arrangement direction of the two gas outlet pipes 2142.

[0048] Since the outlet pipes 2142 are in direct contact with the clean water in the filtering box 22, the temperature at the outlet pipes 2142 is low, and the gasified wax is prone to solidification when entering the outlet pipes 2142 along with the air. Therefore, the wax attached to the outlet pipes 2142 needs to be scraped off by the pushing block 2143. It is worth noting that when one end of the pushing block 2143 scrapes one of the outlet pipes 2142, the other outlet pipe 2142 is left out, and when the pushing block 2143 is in the middle position of the two outlet pipes 2142, the connection between the two outlet pipes 2142 and the two gas distribution pipes 2141 is not blocked by the pushing block 2143. Thus, the situation that both of the outlet pipes 2142 cannot discharge air is avoided when the pushing block 2143 cleans the outlet pipes 2142.

[0049] With reference to Figure 6 , Figure 10 and Figure 12 : the driving unit comprises a third rotary driver 2144, a rotating disc 2145, a sliding groove 2146 and an extension column 2147; The third rotary driver 2144 is vertically arranged on the upper portion of the pushing block 2143; The rotating disc 2145 is fixedly arranged on the output end of the third rotary driver 2144; The sliding groove 2146 is horizontally arranged on the upper portion of the pushing block 2143, and the extension direction of the sliding groove 2146 is perpendicular to the arrangement direction of the two outlet pipes 2142; The extension column 2147 is fixedly arranged on the end portion of the rotating disc 2145, and the axis of the extension column 2147 is not collinear with the axis of the rotating disc 2145. The extension column 2147 extends into the sliding groove 2146 and is in sliding cooperation with the sliding groove 2146.

[0050] The third rotary driver 2144 is preferably a servo motor. When the third rotary driver 2144 drives the rotating disc 2145 to rotate, the extension column 2147 slides in the sliding groove 2146, and the pushing block 2143 reciprocally moves along the arrangement direction of the two outlet pipes 2142.

[0051] With reference to Figure 6 and Figure 10 : the air exhaust assembly 214 further comprises scrapers 2148 and linear drivers 2149; The scrapers 2148 are arranged in two, and the two scrapers 2148 are respectively arranged at the end portions of the two outlet pipes 2142. The two scrapers 2148 alternately ascend and descend along the vertical direction, and the scrapers 2148 are used to scrape off the solidified wax on the pushing block 2143; The linear drivers 2149 are arranged on the upper portions of the scrapers 2148 and are used to drive the scrapers 2148 to move.

[0052] The wax on the pushing block 2143 is scraped off by the scraper 2148, avoiding the wax solidifying and adhering to the end of the pushing block 2143, causing the pushing block 2143 to block the air outlet pipe 2142 when the pushing block 2143 shrinks into the air outlet pipe 2142. When the pushing block 2143 is cleaned by the scraper 2148, the pushing block 2143 pushes the solidified wax in the air outlet pipe 2142 out completely, the end of the pushing block 2143 is flush with the end of the air outlet pipe 2142, and the wax adhering to the end of the pushing block 2143 is scraped off by the scraper 2148.

[0053] Referring to Figures 1-12 The application also relates to a circuit board processing method using the circuit board processing device, and the specific steps are as follows: S1, the air in the wax sealing machine 1 is extracted to the filter box 22 by the air exhaust unit 21, the gasified wax mixed in the air is cooled to form wax particles after being contacted with clean water, and the wax particles fall into the bottom of the filter box 22; S2, part of the gasified wax which is not completely cooled rises to the upper part of the clean water, the atomizer 23 sprays the atomized water into the filter box 22, and the part of the gasified wax which is not completely cooled is cooled and falls off after being contacted with the water vapor; S3, the rising air is discharged after passing through the sponge 24.

[0054] Working principle: when the wax sealing machine 1 starts to run, the heated wax vaporizes, a small amount of vaporized wax diffuses into the air, the exhaust unit 21 exhausts the air in the wax sealing machine 1, and the vaporized wax is also exhausted with the air, the exhaust unit 21 has a positive air exhaust function, when the exhaust unit 21 exhausts the air mixed with the vaporized wax into the filter box 22, the air mixed with the vaporized wax is injected into the clean water in the filter box 22, the clean water rapidly cools the air, and then the vaporized wax mixed in the air is cooled and condensed, the condensed vaporized wax is wax particles, the wax particles sink to the bottom of the filter box 22 under the action of their own gravity, and since the adhesion of the condensed wax particles is greatly reduced, and the filter box 22 contains clean water, the settled wax particles will not adhere to the bottom of the filter box 22. The air injected into the clean water by the exhaust unit 21 will flow from bottom to top and form bubbles in the clean water, so a small amount of vaporized wax in the bubbles is not cooled in time and rises with the air, when the air leaves the clean water, the vaporized wax mixed in the bubbles diffuses freely, at this time the atomizer 23 continuously sprays water mist into the filter box 22, the water mist is distributed on the upper part of the clean water surface, and the vaporized wax rising with the air fully contacts the water mist, it is worth noting that the water mist is sprayed before being cooled, so the water mist has a low temperature, which ensures that a small amount of vaporized wax rising with the air can be quickly condensed and fall back into the filter box 22 after contacting the water mist, at the same time, in order to avoid water vapor from being discharged from the upper part of the filter box 22, a sponge 24 is arranged at the upper part of the filter box 22, which absorbs and intercepts the water vapor, but the sponge 24 after absorbing the water vapor will hinder the flow of the air flow, causing the load of the exhaust unit 21 to increase, in order to reduce the load of the exhaust unit 21, an auxiliary fan 25 is arranged at the upper part of the sponge 24, which ensures that the air flow can smoothly flow through the wet sponge 24. The sponge 24 can also intercept part of the condensed wax particles, the intercepted wax particles have been solidified and formed, so they will not adhere to the bottom of the sponge 24, since the atomized water will continuously flow into the sponge 24 with the air, causing the water content in the sponge 24 to continuously increase, and then causing water droplets to gather at the bottom of the sponge 24, the water droplets mix with the wax particles attached to the bottom of the sponge 24 and carry the wax particles to drop, thereby realizing self-cleaning of the sponge 24.

[0055] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the protection scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A circuit board processing equipment, comprising a wax sealing machine (1) and a smoke exhaust unit (2); Its features are, The smoke exhaust unit (2) includes an exhaust unit (21), a filter box (22), an atomizer (23), a sponge (24), and an auxiliary fan (25); The exhaust unit (21) is located on top of the wax sealing machine (1); The filter box (22) is located on one side of the wax sealing machine (1). The filter box (22) contains clean water. The end of the exhaust unit (21) extends into the filter box (22) and protrudes below the surface of the clean water. The exhaust unit (21) is used to introduce air from the wax sealing machine (1) into the filter box (22). The atomizer (23) is installed on the side wall of the filter box (22) and is used to spray water mist into the filter box (22); The sponge (24) is placed on top of the filter box (22); An auxiliary fan (25) is located on the upper part of the sponge (24) and is used to exhaust the gas in the filter box (22).

2. The circuit board processing equipment according to claim 1, characterized in that, A discharge unit (26) is provided at the bottom of the filter box (22). The discharge unit (26) includes a spiral blade (261), a first rotary actuator (262), and a valve body (263). The spiral blades (261) are rotatably disposed at the bottom of the filter box (22) along the length of the filter box (22); The first rotary actuator (262) is horizontally disposed on the side wall of the filter box (22) and is used to drive the spiral blades (261). An outlet is provided on the side wall of the filter box (22) on one side of the end of the spiral blade (261), and the valve body (263) is provided on the outlet.

3. The circuit board processing equipment according to claim 1, characterized in that, The exhaust unit (21) includes an exhaust shroud (211), an exhaust pipe (212), an air pump (213), and an exhaust assembly (214). The exhaust hood (211) has an inverted funnel-shaped structure and is located on the upper part of the wax sealing machine (1); The two ends of the exhaust pipe (212) are connected to the upper part of the exhaust hood (211) and the upper part of the filter box (22) respectively. The exhaust pipe (212) is covered with heat insulation material and is arranged in an inverted U shape. The air pump (213) is installed on the exhaust pipe (212); The exhaust assembly (214) is located at the bottom of the exhaust pipe (212) and extends to the filter box (22).

4. The circuit board processing equipment according to claim 3, characterized in that, A flow guide (2111) is provided inside the exhaust hood (2111). The flow guide (2111) has an inverted funnel-shaped structure and there is an annular gap between the flow guide (2111) and the exhaust hood (2111). The diameter of the upper opening of the flow guide (2111) is smaller than the diameter of the upper opening of the exhaust hood (2111). An extension plate (2112) is provided below the flow guide (2111). The extension plate (2112) has an annular structure and is fixedly installed on the exhaust hood (2111). The lower part of the flow guide (2111) extends to the top of the extension plate (2112). The flow guide (2111) is used to guide the liquid wax out.

5. The circuit board processing equipment according to claim 4, characterized in that, The collection assembly (215) includes an annular chamber (2151), a discharge port (2152), a scraper (2153), a collection box (2154), and a condenser (2155). The annular chamber (2151) is fitted around the exhaust hood (211). The annular chamber (2151) is located at the lower part of the extension plate (2112). The extension plate (2112) can guide liquid wax into the annular chamber (2151). The material discharge port (2152) is located at the bottom of the annular silo (2151); The scraper (2153) is rotatably disposed inside the annular chamber (2151) around the axis of the annular chamber (2151), and the scraper (2153) is always in contact with and slidingly fitted to the inner wall of the annular chamber (2151). The collection box (2154) is located at the lower part of the annular compartment (2151) and communicates with the annular compartment (2151); The condenser tube (2155) is located at the bottom of the annular compartment (2151).

6. The circuit board processing equipment according to claim 3, characterized in that, A heating plate (2113) is provided on the upper part of the exhaust hood (211).

7. The circuit board processing equipment according to claim 3, characterized in that, The exhaust assembly (214) includes a distribution pipe (2141), an outlet pipe (2142), a push block (2143), and a drive unit; The air distribution pipe (2141) is located at the end of the exhaust pipe (212) on one side of the filter box (22). The air distribution pipe (2141) has two branches and is submerged in clean water. There are two vent pipes (2142), which are respectively set on two branches and are coaxially and horizontally arranged. The two ends of the push block (2143) extend into the two air outlet pipes (2142) respectively and slide in cooperation with the two air outlet pipes (2142); The drive unit is located on the upper part of the push block (2143), and the drive unit is used to drive the push block (2143) to reciprocate along the arrangement direction of the two air outlet pipes (2142).

8. The circuit board processing equipment according to claim 7, characterized in that, The drive unit includes a third rotary actuator (2144), a rotating disk (2145), a slide (2146), and an extension column (2147). The third rotary actuator (2144) is vertically mounted on top of the push block (2143); The rotating disk (2145) is fixedly mounted on the output end of the third rotary driver (2144); The slide (2146) is horizontally opened on the upper part of the push block (2143), and the extension direction of the slide (2146) is perpendicular to the arrangement direction of the two air outlet pipes (2142). The extension column (2147) is fixedly installed at the end of the rotating disk (2145), and the axis of the extension column (2147) is not collinear with the axis of the rotating disk (2145). The extension column (2147) extends into the slide groove (2146) and slides in cooperation with the slide groove (2146).

9. A circuit board processing equipment according to claim 7, characterized in that, The exhaust assembly (214) also includes a scraper (2148) and a linear actuator (2149). There are two scrapers (2148), which are located at the ends of the two air outlets (2142) respectively. The two scrapers (2148) move up and down alternately in the vertical direction. The scrapers (2148) are used to scrape off the solidified wax on the push block (2143). A linear actuator (2149) is located on the upper part of the scraper (2148) and is used to drive the scraper (2148) to move.

10. A circuit board processing method, employing the circuit board processing equipment described in any one of claims 1-9, characterized in that, The specific steps are as follows: S1. The exhaust unit (21) extracts the air from the wax sealer (1) into the filter box (22). The vaporized wax mixed in the air comes into contact with water and cools down to form wax particles that fall to the bottom of the filter box (22). S2. Some of the not-completely-cooled vaporized wax rises with the air to the top of the water. The atomizer (23) sprays the atomized water into the filter box (22). The not-completely-cooled vaporized wax cools down and falls off after contacting the water vapor. S3, the rising air passes through the sponge (24) and is then discharged.

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