Adjustable dryer for circuit board

Abstract

The invention relates to the field of circuit board drying, in particular to an adjustable circuit board dryer which comprises a base plate, a belt conveyor and the like. The seat plate is connected with a belt conveyor used for conveying the circuit board. A groove is formed in a mounting belt, under the condition that the mounting belt, an extrusion plate, a water collecting frame and a plugging plate are matched, water left on the surface of the water-absorbing cotton can be sucked away by a pump machine under the condition that the water-absorbing cotton is wrapped, and under the condition that the groove is formed in the mounting belt and a drying assembly is matched, the water-absorbing cotton can be dried by the pump machine. Through the arrangement of the first air conveying pipe, hot air conveyed to the first air conveying pipe can dry the upper face and the lower face of the absorbent cotton at the same time, the drying effect of the absorbent cotton is better, and the situation that in the prior art, water in an absorbent roller is extruded out through an extrusion scraping ring, and strong friction force is generated between the extrusion scraping ring and the absorbent roller is avoided; and the water absorption roller can accelerate the loss speed under the influence of the friction force, so that the water absorption roller needs to be frequently replaced, and the production cost is relatively high.

Description

Technical Field

[0001] The invention relates to the field of circuit board drying, in particular to an adjustable circuit board dryer. Background Art

[0002] After the conventional circuit board is electroplated and cleaned, a water-absorbing roller is usually used to absorb the moisture on the surface of the circuit board to keep the circuit board dry, so as to prevent the moisture on the surface of the circuit board from affecting the production quality of the next process; However, the method of using a suction roller to absorb moisture from the surface of the circuit board is that the suction roller is easily saturated with water, which reduces the drying performance of the circuit board, resulting in a poor drying effect of the suction roller on the circuit board. Therefore, it is usually necessary to use an extrusion scraper ring to squeeze the suction roller to squeeze out the moisture in the suction roller. However, in order for the extrusion scraper ring to better squeeze out all the moisture in the suction roller and keep a good water absorption effect, it is usually necessary to squeeze the suction roller to the limit with the extrusion scraper ring. At this time, a strong friction force will be generated between the extrusion scraper ring and the suction roller. Under the influence of this friction force, the suction roller will accelerate the wear rate of the suction roller, and the suction roller needs to be replaced frequently, resulting in high production costs. Summary of the invention

[0003] In order to overcome the disadvantage of squeezing out the water in the suction roller by squeezing the scraper ring, a strong friction force will be generated between the squeezing scraper ring and the suction roller. Under the influence of the friction force, the suction roller will accelerate the wear rate of the suction roller, and the suction roller needs to be replaced frequently, resulting in a high production cost. The present invention provides an adjustable dryer for circuit boards.

[0004] The technical implementation scheme of the present invention is: an adjustable dryer for circuit boards, including a base plate and a belt conveyor; the base plate is connected to the belt conveyor for conveying circuit boards; it also includes a power component, a mounting belt, a water-absorbing sponge, a water-removing component and a drying component; the base plate is connected to the power component; the power component is connected to the mounting belt, and the power component is used to drive the mounting belt and the parts connected thereto to rotate; the mounting belt is detachably connected to a plurality of water-absorbing sponges, and the water-absorbing sponges are used to absorb moisture from the surface of the circuit board; the power component is connected to a water-removing component for removing moisture from the inside of the water-absorbing sponges; the power component is connected to a drying component for drying the water-absorbing sponges.

[0005] As an improvement of the above scheme, the water removal component includes a long rod, a mounting plate, an electric push rod 1, an extrusion plate, a spring telescopic rod, a water collecting frame, a blocking plate, a pump and a water outlet pipe; the power component is connected to two long rods, and the long rods are in contact with the mounting belt; the power component is connected to two mounting plates; each mounting plate is fixedly connected to at least one electric push rod 1; the telescopic parts of all the electric push rods 1 are commonly fixedly connected to an extrusion plate for squeezing the water-absorbing sponge; the front and rear sides of the extrusion plate are fixedly connected to a plurality of spring telescopic rods; the telescopic parts of all the spring telescopic rods in the front are commonly fixedly connected to a water collecting frame; the rear The telescopic parts of all the spring telescopic rods are commonly fixedly connected to another water collecting frame, and all the water collecting frames are in close contact with the extrusion plate; all the water collecting frames are commonly fixedly connected to two sealing plates distributed on the left and right, and each sealing plate is in close contact with the extrusion plate; each water collecting frame is fixedly connected to a pump, and the air inlet of the pump is connected to the water collecting frame; each water collecting frame is connected to a water outlet pipe; the mounting belt is provided with a plurality of grooves; each groove is provided with a plurality of air holes; each water collecting frame is provided with a rectangular groove; each water collecting frame is provided with a plurality of convex parts, and the shape of the convex parts matches that of the grooves.

[0006] As an improvement of the above scheme, the drying component includes a dual-channel air duct, an air supply duct 1, a short tube 1, a short tube 2 and a rectangular cover; the power component is connected to two dual-channel air ducts, and the dual-channel air ducts are in contact with the mounting belt; each dual-channel air duct is provided with a rectangular channel 1; each dual-channel air duct is provided with a rectangular channel 2; each rectangular channel 1 is connected to a short tube 1; each rectangular channel 2 is connected to a short tube 2; the short tube 1 and the short tube 2 located on the same dual-channel air duct are commonly connected to an air supply duct 1; all the dual-channel air ducts are commonly fixed to a rectangular cover, and the rectangular cover is connected to all the rectangular channels 1; the rectangular cover is provided with a plurality of air holes 2.

[0007] As an improvement to the above solution, the groove is arranged in an elliptical shape.

[0008] As an improvement of the above solution, the inner bottom surface of the water collecting frame is arranged such that the side close to the water outlet pipe is low and the side away from the water outlet pipe is high.

[0009] As an improvement of the above scheme, a blocking net is also included; each groove is provided with a blocking net for preventing the absorbent sponge from sinking into the groove.

[0010] As an improvement of the above solution, a limiting plate is also included; the power assembly is connected to the limiting plate, and the limiting plate is in contact with the mounting belt; the limiting plate is provided with a rectangular through slot.

[0011] As an improvement of the above scheme, it also includes a hydraulic push rod, an electric push rod 2 and a limiting rod; two hydraulic push rods are fixedly connected to the front and rear sides of the seat plate, and the telescopic parts of all the hydraulic push rods are connected to the power assembly; the belt conveyor is connected to four electric push rods 2; the telescopic parts of the two front electric push rods 2 are commonly fixedly connected to a limiting rod; the telescopic parts of the two rear electric push rods 2 are commonly fixedly connected to another limiting rod.

[0012] As an improvement of the above scheme, it also includes a water wiping belt; the left mounting plate is connected to the water wiping belt.

[0013] As an improvement of the above scheme, it also includes a fixed plate, a connecting frame, round rods, a DC motor, a rectangular exhaust pipe and two air supply pipes; the water-wiping belt is arranged as a conveyor belt structure; the left mounting plate is fixedly connected to the fixed plate; the fixed plate is fixedly connected to the connecting frame; the connecting frame is rotatably connected to two round rods, and all the round rods are rotatably connected to the water-wiping belt; the connecting frame is fixedly connected to the DC motor, and the output shaft of the DC motor is fixedly connected to the corresponding round rods; the fixed plate is fixedly connected to the rectangular exhaust pipe; the rectangular exhaust pipe is provided with a plurality of air outlet circular holes; the rectangular exhaust pipe is connected to at least one air supply pipe two.

[0014] The present invention has the following advantages: In the technical solution provided by the present invention: by arranging grooves on the mounting belt, and under the condition that the absorbent sponge will be wrapped under the cooperation of the mounting belt, the extrusion plate, the water collecting frame and the blocking plate, the pump can absorb the residual moisture on the surface of the absorbent sponge, and by arranging grooves on the mounting belt, and under the condition of cooperating with the drying component, the hot air delivered to the air delivery pipe 1 can simultaneously dry the upper and lower surfaces of the absorbent sponge, so that the drying effect of the absorbent sponge is better, and the method of squeezing the water in the absorbent roller by squeezing the scraper ring in the prior art is avoided, and a strong friction force will be generated between the squeezing scraper ring and the absorbent roller, and the absorbent roller will accelerate the wear speed of the absorbent roller under the influence of the friction force, and the absorbent roller needs to be frequently replaced, resulting in a problem of high production cost; Use a water-wiping tape to wipe off the water stains on the circuit board surface to avoid the problem of water stains remaining on the circuit board surface after the absorbent sponge comes into contact with the circuit board when there is too much moisture on the circuit board surface; By setting the water-wiping belt as a conveyor belt structure, and cooperating with a DC motor and a round rod to drive the water-wiping belt to rotate, the contact position between the water-wiping belt and the surface of the circuit board is constantly changed, and then the water-wiping belt is dried by hot air, so that the water-wiping belt can continuously wipe the water stains on the surface of the circuit board, so as to avoid the problem that the contact position between the water-wiping belt and the circuit board remains unchanged, the contact position between the water-wiping belt and the circuit board will be in a wet state, and it is difficult to completely wipe the water stains on the surface of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a first viewing angle of the three-dimensional structure of the adjustable circuit board dryer disclosed in the present invention; Figure 2 A schematic diagram of a second viewing angle of the three-dimensional structure of the adjustable circuit board dryer disclosed by the present invention; Figure 3 A schematic diagram of the internal structure of the mounting frame 2 disclosed in the adjustable circuit board dryer of the present invention; Figure 4 A schematic diagram of the combined internal structure of the mounting belt, the dual-channel air duct and the rectangular cover disclosed in the adjustable circuit board dryer of the present invention; Figure 5 A combined plan view of the mounting belt, the water-absorbing sponge, the first air delivery pipe, the double-channel air duct, the first short pipe, the second short pipe and the rectangular cover disclosed in the adjustable circuit board dryer of the present invention; Figure 6 A schematic diagram of the combined internal structure of the extrusion plate and the water collecting frame disclosed in the adjustable circuit board dryer of the present invention; Figure 7 The schematic diagram of the combined structure of the water-wiping belt, the connecting frame, the round rod, the DC motor, the rectangular exhaust pipe and the air supply pipe disclosed in the adjustable circuit board dryer of the present invention; Figure 8 A combined plan view of the mounting belt, water-absorbing sponge, long rod, mounting plate, electric push rod, extrusion plate, water collecting frame, blocking plate, pump and water outlet pipe disclosed in the adjustable circuit board dryer of the present invention; Fig. 9 A state diagram of the water collecting frame disclosed in the adjustable circuit board dryer of the present invention when in contact with the mounting belt; Fig.10 The adjustable circuit board dryer disclosed in the present invention is a state diagram in which the absorbent sponge is located between two long rods.

[0016] The reference numbers in the figure are: 1-seat plate, 2-mounting belt, 3-water-absorbing sponge, 111-mounting frame 1, 112-rotating shaft rod 1, 113-servo motor 1, 114-conveyor belt, 121-mounting frame 2, 122-rotating shaft rod 2, 123-servo motor 2, 131-long rod, 132-mounting plate, 133-electric push rod 1, 134-extrusion plate, 135-spring telescopic rod, 136-water collecting frame, 137-blocking plate, 138-pump, 139-water outlet pipe, 141-dual-channel air duct, 142-air delivery pipe 1, 143-short pipe 1, 144-short pipe 2, 145-water collecting frame, 146-water collecting frame, 147-water collecting frame, 148-water collecting frame, 149-water collecting frame, 150-water collecting frame, 151-water collecting frame, 152-air supply pipe 1, 153-short pipe 1, 154-short pipe 2, 155-water collecting frame, 156-water collecting frame, 157-water collecting frame, 158-water collecting frame, 159-water collecting frame, 160-water collecting frame, 161-water collecting frame, 162-air supply pipe 1, 163-short pipe 1, 164-short pipe 2, 165-water collecting frame, 166-water collecting frame, 167-water collecting frame, 168-water collecting frame, 169-water collecting frame, 170-water collecting frame, 171-water collecting frame, 172-water collecting frame, 1 5-rectangular cover, 211-blocking net, 212-limiting plate, 221-hydraulic push rod, 222-electric push rod 2, 223-limiting rod, 311-water wiping belt, 321-fixing plate, 322-connecting frame, 323-round rod, 324-DC motor, 325-rectangular exhaust pipe, 326-air supply pipe 2, 201-groove, 202-air hole 1, 13601-rectangular groove, 13602-convex part, 21201-rectangular through groove, 14101-rectangular channel 1, 14102-rectangular channel 2, 14501-air hole 2, 32501-air outlet circular hole. DETAILED DESCRIPTION

[0017] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present application and are not limited to the scope of the present application. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0018] Example 1 An adjustable circuit board dryer, such as Figure 1-Figure 6 and Figure 8-Figure 10 As shown, it includes a base plate 1 and a belt conveyor; the base plate 1 is connected to the belt conveyor for conveying circuit boards; It also includes a power component, a mounting belt 2, a water-absorbing sponge 3, a water-removing component and a drying component; the seat plate 1 is connected to the power component; the power component is connected to the mounting belt 2, and the power component is used to drive the mounting belt 2 and the parts connected thereto to rotate; the mounting belt 2 is detachably connected to four equidistantly distributed water-absorbing sponges 3; the power component is connected to the water-removing component; the power component is connected to the drying component.

[0019] The belt conveyor includes a mounting frame 111, a rotating shaft rod 112, a servo motor 113 and a conveyor belt 114; the seat plate 1 is fixedly connected to the mounting frame 111; the mounting frame 111 is rotatably connected to two rotating shaft rods 112 distributed on the left and right; the mounting frame 111 is bolted to the servo motor 113, and the output shaft of the servo motor 113 is fixedly connected to the corresponding rotating shaft rod 112; the two rotating shaft rods 112 jointly transmit the conveyor belt 114.

[0020] The power assembly includes an installation frame 121, a rotating shaft rod 122 and a servo motor 123; the seat plate 1 is connected to the installation frame 121; the installation frame 121 is rotatably connected to two rotating shaft rods 122, and all the rotating shaft rods 122 are rotatably connected to the installation belt 2; the installation frame 121 is bolted to the servo motor 123, and the output shaft of the servo motor 123 is fixedly connected to the corresponding rotating shaft rod 122.

[0021] The water removal assembly includes a long rod 131, a mounting plate 132, an electric push rod 133, an extrusion plate 134, a spring telescopic rod 135, a water collecting frame 136, a blocking plate 137, a pump 138 and a water outlet pipe 139; the second mounting frame 121 is rotatably connected to two long rods 131 distributed on the left and right, and the long rods 131 are in contact with the mounting belt 2; the second mounting frame 121 is fixedly connected to two mounting plates 132 distributed on the left and right; each mounting plate 132 is bolted to two electric Push rod 133; the telescopic parts of all electric push rods 133 are fixedly connected to a squeeze plate 134; the front and rear sides of the squeeze plate 134 are fixedly connected to two spring telescopic rods 135; the telescopic parts of all spring telescopic rods 135 in the front are fixedly connected to a water collecting frame 136 for collecting water; the telescopic parts of all spring telescopic rods 135 in the rear are fixedly connected to another water collecting frame 136, and all the water collecting frames 136 are in close contact with the squeeze plate 134; all the water collecting frames 136 Two sealing plates 137 distributed on the left and right are fixedly connected together, and each sealing plate 137 is in close contact with the extrusion plate 134; each water collecting frame 136 is bolted with a pump 138 for extracting water from the water-absorbing sponge 3, and the air inlet of the pump 138 is connected to the water collecting frame 136; each water collecting frame 136 is connected with a water outlet pipe 139, and each water outlet pipe 139 is connected to an external storage device for storing water; the installation belt 2 is provided with a plurality of grooves 201, Each groove 201 is located between the corresponding mounting belt 2 and the water-absorbing sponge 3; each groove 201 is provided with a plurality of air holes 202; each water collecting frame 136 is provided with a rectangular groove 13601 for allowing the water squeezed out by the extrusion plate 134 to flow into the water collecting frame 136; each water collecting frame 136 is provided with a plurality of protrusions 13602, which match the shape of the groove 201, and the protrusion 13602 is used to block the side of the groove 201.

[0022] The drying assembly includes a dual-channel air duct 141, an air delivery duct 1 142, a short tube 1 143, a short tube 2 144 and a rectangular cover 145; the installation frame 2 121 is fixedly connected to two dual-channel air ducts 141 distributed front and back, and the dual-channel air ducts 141 are in contact with the installation belt 2; each dual-channel air duct 141 is provided with a rectangular channel 1 14101; each dual-channel air duct 141 is provided with a rectangular channel 2 14102; each rectangular channel 1 14101 is connected to a short tube 1 43; each rectangular channel 14102 is connected to a short tube 144; the short tube 143 and the short tube 144 located on the same dual-channel air duct 141 are commonly connected to an air delivery pipe 142, and each air delivery pipe 142 is connected to an external air supply device for delivering hot air; all dual-channel air ducts 141 are commonly fixed with a rectangular cover 145, and the rectangular cover 145 is connected to all rectangular channels 14101; the rectangular cover 145 is provided with a plurality of air holes 14501.

[0023] The groove 201 is elliptical in shape, which is used to increase the accommodation space.

[0024] The inner bottom surface of the water collecting frame 136 is arranged such that the side close to the water outlet pipe 139 is low and the side away from the water outlet pipe 139 is high, and this arrangement is used to make the water flow into the water outlet pipe 139 better.

[0025] A blocking net 211 is also included; each groove 201 is provided with a blocking net 211 .

[0026] The limiting plate 212 is also included; the mounting frame 121 is bolted with the limiting plate 212 for making the extrusion plate 134 stably squeeze the water-absorbing sponge 3, and the limiting plate 212 is in contact with the mounting belt 2; the limiting plate 212 is provided with a rectangular through slot 21201.

[0027] It also includes a hydraulic push rod 221, an electric push rod 222 and a limiting rod 223; two hydraulic push rods 221 are bolted to the front and rear sides of the seat plate 1, and the telescopic parts of all the hydraulic push rods 221 are fixed to the mounting frame 121; two electric push rods 222 are fixed to the front and rear sides of the mounting frame 111; the telescopic parts of the two front electric push rods 222 are commonly fixed to a limiting rod 223 for preventing the circuit board from shifting; the telescopic parts of the two rear electric push rods 222 are commonly fixed to another limiting rod 223.

[0028] The specific operation of the above-mentioned embodiment 1 is as follows: First, as a reference, the output shaft of the servo motor 113 is controlled to drive the conveyor belt 114 to rotate intermittently clockwise through the rotating shaft rod 112, and the output shaft of the servo motor 2 123 is controlled to drive the water-absorbing sponge 3 to rotate intermittently counterclockwise through the rotating shaft rod 2 122 and the installation belt 2 in turn. During the rotation process, when the middle part of the water-absorbing sponge 3 is below the center point of the left rotating shaft rod 2 122 and aligned, the installation belt 2 and the water-absorbing sponge 3 are both in a stopped moving state. At this time, the circuit board to be processed is placed on the conveyor belt 114 in a horizontal state through an external manipulator. As the conveyor belt 114 runs, the right end of the circuit board will contact the water-absorbing sponge 3. In this process, since the moisture in the contact part of the circuit board with the water-absorbing sponge 3 will be absorbed by the water-absorbing sponge 3, as the conveyor belt 114 continues to drive the circuit board to move, all the moisture on the surface of the circuit board will be absorbed by the water-absorbing sponge 3, and then as the conveyor belt 114 continues to drive the circuit board to move, the circuit board will be conveyed to the next process to complete the water absorption process of the circuit board.

[0029] It should be noted that after the circuit board passes through the water-absorbing sponge 3 and the water-absorbing sponge 3 absorbs the water on the surface of the circuit board, the installation belt 2 drives the water-absorbing sponge 3 to continue to rotate. When the water-absorbing sponge 3 is between the two long rods 131, the water-absorbing sponge 3 is in a stopped moving state, and the water-absorbing sponge 3 is directly above the extrusion plate 134. At this time, the telescopic part of the electric push rod 133 is controlled to extend, so that the electric push rod 133 pushes the extrusion plate 134 and the parts connected thereto to move upward. In this process, when the water collecting frame 136 contacts the installation belt 2, the water collecting frame 136 is installed. If the mounting belt 2 cannot be moved further, as the telescopic portion of the electric push rod 133 continues to extend, the telescopic portion of the spring telescopic rod 135 will be pulled out, and the telescopic portion of the electric push rod 133 can continue to push the squeezing plate 134 to move upward, so that the squeezing plate 134 squeezes the water-absorbing sponge 3 to squeeze out the water inside the water-absorbing sponge 3. During the squeezing process, when the water collecting frame 136 contacts the mounting belt 2, the blocking plate 137 contacts the mounting belt 2, the water collecting frame 136 and the blocking plate 137 will frame the four sides of the water-absorbing sponge 3. At the same time, Fig.10 As shown, the extrusion plate 134 is in contact with the absorbent sponge 3, and the bottom of the rectangular groove 13601 is flush with the upper surface of the extrusion plate 134, so that all the squeezed water will enter the water collecting frame 136 through the rectangular groove 13601, and the water entering the water collecting frame 136 will flow into the external storage device through the outlet pipe 139 for storage.

[0030] At the same time, when the squeezing plate 134 squeezes the water-absorbing sponge 3, the pump 138 is controlled to extract the air in the water-collecting frame 136. At this time, when the water-collecting frame 136 contacts the mounting belt 2, the convex portion 13602 contacts the corresponding groove 201, that is, the mounting belt 2, the squeezing plate 134, the water-collecting frame 136 and the blocking plate 137 wrap the water-absorbing sponge 3 and form a sealed space. Then, the suction force generated by the pump 138 will sequentially extract the external air through the water-collecting frame 136, the groove 201 and the air hole 1 202. In this process, the suction force generated by the pump 138 will pump the water-absorbing sponge 3. The residual moisture on the surface of the sponge 3 is divided into the residual moisture between the contact surface of the absorbent sponge 3 and the mounting belt 2 and the residual moisture between the absorbent sponge 3 and the extrusion plate 134. The extracted moisture will enter the water collecting frame 136 after passing through the groove 201 to prevent the subsequent extrusion plate 134 from no longer squeezing the absorbent sponge 3. When the absorbent sponge 3 expands to restore its initial state, the absorbent sponge 3 will absorb the squeezed residual moisture back into it. At the same time, the outside air will contact the surface of the absorbent sponge 3 through the air hole 1 202, thereby air-drying the surface of the absorbent sponge 3.

[0031] After the pump 138 extracts the residual water on the surface of the water-absorbing sponge 3, the telescopic part of the electric push rod 133 is controlled to drive the squeezing plate 134 and the parts connected thereto to move downward and return to the initial position. Then, the installation belt 2 drives the water-absorbing sponge 3 to continue to rotate. When the water-absorbing sponge 3 is inside the rectangular cover 145, the water-absorbing sponge 3 after the water is removed is in a stopped moving state, and the other water-absorbing sponge 3 on the installation belt 2 is now located below the center point of the left rotating shaft rod 122 and aligned, and the circuit board is dewatered. When the water-absorbing sponge 3 after the water is removed is located inside the rectangular cover 145, the groove 201 will align with the rectangular channel 14102 At this time, the external air supply equipment is controlled to deliver the hot air to the air delivery pipe 142, and a part of the hot air delivered to the air delivery pipe 142 will flow through the rectangular channel 14101 and the rectangular cover 145 in sequence through the short pipe 143, and finally flow to the outside through the wind hole 14501, and the other part will flow through the rectangular channel 2 14102 and the groove 201 in sequence through the short pipe 144, and finally flow to the outside through the wind hole 1 202, so that the hot air can dry the upper and lower surfaces of the absorbent sponge 3 at the same time, so that the drying effect of the absorbent sponge 3 is better, so as to prevent the absorbent sponge 3 from being in a wet state after squeezing, thereby affecting its water absorption capacity.

[0032] In this way, by setting the groove 201 on the mounting belt 2, and under the condition that the absorbent sponge 3 will be wrapped under the cooperation of the mounting belt 2, the extrusion plate 134, the water collecting frame 136 and the sealing plate 137, the pump 138 can absorb the residual moisture on the surface of the absorbent sponge 3, and by setting the groove 201 on the mounting belt 2, and under the condition of cooperating with the drying component, the hot air delivered to the air duct 142 can simultaneously dry the upper and lower surfaces of the absorbent sponge 3, so that the drying effect of the absorbent sponge 3 is better, and avoids the method in the prior art of squeezing out the moisture in the absorbent roller by squeezing the scraper ring, which will generate a strong friction between the squeezing scraper ring and the absorbent roller. Under the influence of the friction, the absorbent roller will accelerate the wear rate of the absorbent roller, and the absorbent roller needs to be replaced frequently, resulting in a problem of high production cost.

[0033] Furthermore, when the water-absorbing sponge 3 is directly above the extrusion plate 134, the limiting plate 212 will be directly above the water-absorbing sponge 3, and the limiting plate 212 will contact the mounting belt 2. It should be noted that at this time, the air hole 202 is aligned with the rectangular through groove 21201, and the limiting plate 212 will not block the air hole 202, and the limiting plate 212 will not affect the pump 138 to extract the residual moisture on the surface of the water-absorbing sponge 3. When the extrusion plate 134 squeezes the water-absorbing sponge 3, the limiting plate 212 will limit the mounting belt 2, so that the extrusion plate 134 can stably squeeze the water-absorbing sponge 3 to prevent the mounting belt 2 from being deformed after being subjected to force, thereby causing the water-absorbing sponge 3 to move upward after being subjected to force, thereby affecting the squeezing effect of the extrusion plate 134 on the water-absorbing sponge 3.

[0034] Furthermore, in the process of the conveyor belt 114 driving the circuit board to move, the circuit board is restricted by two limiting rods 223 to prevent the circuit board from shifting. When circuit boards of different thicknesses need to be dried, the telescopic portion of the hydraulic push rod 221 can be controlled to push the mounting frame 111 and the parts connected thereto to rise or fall, so as to adjust the distance between the mounting belt 2 and the conveyor belt 114, so that the water-absorbing sponge 3 can dry circuit boards of different thicknesses. When circuit boards of different widths need to be dried, the telescopic portion of the electric push rod 222 can be controlled to push the limiting rod 223 to move, so as to adjust the distance between the two limiting rods 223, so that the distance between the two limiting rods 223 is equal to the width of the circuit board, so that the limiting rod 223 can limit circuit boards of different widths.

[0035] It should be noted that the reason why the mounting belt 2 of the dryer is not directly set to a water-absorbing material is that if the mounting belt 2 is directly set to a water-absorbing material, the overall diameter of the mounting belt 2 will also be expanded after being squeezed for a long time, thereby causing the rotating shaft rod 112 to be unable to normally drive the mounting belt 2 to rotate. Instead, a method of detachably connecting a plurality of equidistantly distributed water-absorbing sponges 3 to the mounting belt 2 is adopted. Since each water-absorbing sponge 3 is individually fixed to the mounting belt 2, even if the overall diameter of the water-absorbing sponge 3 is expanded after being squeezed for a long time, the water-absorbing sponge 3 can also be stably fixed on the mounting belt 2.

[0036] It should be noted that by arranging a plurality of absorbent sponges 3 on the mounting belt 2, two adjacent absorbent sponges 3 work alternately, that is, when the absorbent sponges 3 are being squeezed out or dried with hot air, there are still absorbent sponges 3 drying the circuit board.

[0037] Example 2 On the basis of Example 1, Figure 1-Figure 4 and Figure 6-Figure 7 As shown, a water wiping belt 311 is also included; the left mounting plate 132 is connected to the water wiping belt 311 for wiping off the water stains remaining on the surface of the circuit board.

[0038] It also includes a fixed plate 321, a connecting frame 322, a round rod 323, a DC motor 324, a rectangular exhaust pipe 325 and an air supply pipe 326; the water-wiping belt 311 is a conveyor belt structure, which is used to enable it to continuously wipe the water stains remaining on the surface of the circuit board; the left mounting plate 132 is fixedly connected to the fixed plate 321; the fixed plate 321 is fixedly connected to the connecting frame 322; the connecting frame 322 is rotatably connected to two round rods 323, and all the round rods 323 are rotatably connected to the water-wiping belt 311; the connecting frame 322 is bolted to the DC motor 324, and the output shaft of the DC motor 324 is fixedly connected to the corresponding round rod 323; the fixed plate 321 is fixedly connected to the rectangular exhaust pipe 325; the rectangular exhaust pipe 325 is provided with a plurality of air outlet circular holes 32501; the rectangular exhaust pipe 325 is connected to two air supply pipes 326, and each air supply pipe 326 is connected to an external air supply device.

[0039] The specific operation of the above-mentioned embodiment 2 is as follows: Considering that when there is too much moisture on the surface of the circuit board, since the water absorption capacity of the water-absorbing sponge 3 is limited, water stains are likely to remain on the surface of the circuit board after the water-absorbing sponge 3 comes into contact with the circuit board, and the water stains are still likely to affect the production quality of the next process of the circuit board.

[0040] Therefore, when the circuit board moves to the right, it will pass through the water-wiping belt 311. When passing through, the circuit board will contact the water-wiping belt 311, and the water-wiping belt 311 can wipe off the water stains on the surface of the circuit board to avoid the problem that when there is too much moisture on the surface of the circuit board, the water-absorbing sponge 3 contacts the circuit board, and water stains are easily left on the surface of the circuit board.

[0041] It is considered that if the contact position between the water wiping tape 311 and the circuit board remains unchanged, the contact position between the water wiping tape 311 and the circuit board will be in a wet state, making it difficult to completely wipe off the water stains on the surface of the circuit board.

[0042] Therefore, by setting the wiping belt 311 as a conveyor belt 114 structure, and in the process of the wiping belt 311 wiping the water stains remaining on the surface of the circuit board, the output shaft of the DC motor 324 is controlled to drive the wiping belt 311 to rotate through the round rod 323, so that the contact position between the wiping belt 311 and the surface of the circuit board is continuously changed. At the same time, the external air supply equipment is controlled to transport hot air to the rectangular exhaust pipe 325 through the air supply pipe 326, so that the hot air is blown to the wiping belt 311 through the air outlet circular hole 32501 to dry the wiping belt 311, so that the wiping belt 311 can continuously wipe the water stains on the surface of the circuit board, so as to avoid the problem that the contact position between the wiping belt 311 and the circuit board remains unchanged, the contact position between the wiping belt 311 and the circuit board will be in a wet state, and it is difficult to completely wipe the water stains on the surface of the circuit board.

[0043] At the same time, when the wiping belt 311 rotates to wipe the water stains on the circuit board, the movement of the circuit board is restricted by the limiting rod 223 to prevent the circuit board from being driven by the wiping belt 311 to deviate when the water stains on the circuit board are wiped by the wiping belt 311, causing the circuit board to deviate from the conveying path and unable to be conveyed to the subsequent process.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable circuit board dryer, comprising a base plate (1) and a belt conveyor; the base plate (1) is connected to the belt conveyor for conveying the circuit board; the characteristics are: The invention also comprises a power component, a mounting belt (2), a water-absorbing sponge (3), a water-removing component and a drying component; the seat plate (1) is connected to the power component; the power component is connected to the mounting belt (2), and the power component is used to drive the mounting belt (2) and the parts connected thereto to rotate; the mounting belt (2) is detachably connected to a plurality of water-absorbing sponges (3), and the water-absorbing sponges (3) are used to absorb water from the surface of the circuit board; the power component is connected to the water-removing component for removing water from the water-absorbing sponges (3); and the power component is connected to the drying component for drying the water-absorbing sponges (3).

2. An adjustable circuit board dryer according to claim 1, characterized in that: The water removal component comprises a long rod (131), a mounting plate (132), an electric push rod (133), an extrusion plate (134), a spring telescopic rod (135), a water collection frame (136), a blocking plate (137), a pump (138) and a water outlet pipe (139); the power component is connected to two long rods (131), and the long rods (131) are in contact with the mounting belt (2); the power component is connected to two mounting plates (132); each mounting plate (132) is fixedly connected to at least one electric push rod (133); the telescopic parts of all the electric push rods (133) are commonly fixedly connected to an extrusion plate (134) for extruding the water-absorbing sponge (3); the front and rear sides of the extrusion plate (134) are both fixedly connected to a plurality of spring telescopic rods (135); the telescopic parts of all the front spring telescopic rods (135) are commonly fixedly connected to a water collection frame (136); the telescopic parts of all the rear spring telescopic rods (135) are commonly fixedly connected to The telescopic parts are fixedly connected to another water collecting frame (136), and all the water collecting frames (136) are in close contact with the extrusion plate (134); all the water collecting frames (136) are fixedly connected to two left and right distributed blocking plates (137), and each blocking plate (137) is in close contact with the extrusion plate (134); each water collecting frame (136) is fixedly connected to a pump (138), and the air inlet of the pump (138) is connected to the water collecting frame (136); each water collecting frame (136) is connected to a water outlet pipe (139); the mounting belt (2) is provided with a plurality of grooves (201); each groove (201) is provided with a plurality of air holes (202); each water collecting frame (136) is provided with a rectangular groove (13601); each water collecting frame (136) is provided with a plurality of convex portions (13602), and the convex portions (13602) match the shape of the groove (201).

3. An adjustable circuit board dryer according to claim 2, characterized in that: The drying component comprises a double-channel air duct (141), an air delivery duct 1 (142), a short tube 1 (143), a short tube 2 (144) and a rectangular cover (145); the power component is connected to the two double-channel air ducts (141), and the double-channel air ducts (141) are in contact with the mounting belt (2); each double-channel air duct (141) is provided with a rectangular channel 1 (14101); each double-channel air duct (141) is provided with a rectangular channel 2 (14102); each rectangular channel 1 (14101) is connected to A short tube 1 (143) is connected; each rectangular channel 2 (14102) is connected to a short tube 2 (144); the short tube 1 (143) and the short tube 2 (144) located on the same dual-channel air duct (141) are connected to an air delivery duct 1 (142); all the dual-channel air ducts (141) are fixedly connected to a rectangular cover shell (145), and the rectangular cover shell (145) is connected to all the rectangular channels 1 (14101); the rectangular cover shell (145) is provided with a plurality of air holes 2 (14501).

4. An adjustable circuit board dryer according to claim 2, characterized in that: The groove (201) is arranged in an elliptical shape.

5. An adjustable circuit board dryer according to claim 2, characterized in that: The inner bottom surface of the water collecting frame (136) is arranged such that the side close to the water outlet pipe (139) is low, and the side away from the water outlet pipe (139) is high.

6. An adjustable circuit board dryer according to claim 2, characterized in that: It also includes a blocking net (211); each groove (201) is provided with a blocking net (211) for preventing the water-absorbing sponge (3) from sinking into the groove.

7. An adjustable circuit board dryer according to any one of claims 1 to 6, characterized in that: It also includes a limiting plate (212); the power assembly is connected to the limiting plate (212), and the limiting plate (212) is in contact with the mounting belt (2); the limiting plate (212) is provided with a rectangular through slot (21201).

8. An adjustable circuit board dryer according to claim 7, characterized in that: It also includes a hydraulic push rod (221), an electric push rod (222) and a limiting rod (223); the front and rear sides of the seat plate (1) are both fixedly connected to two hydraulic push rods (221), and the telescopic parts of all the hydraulic push rods (221) are connected to the power assembly; the belt conveyor is connected to four electric push rods (222); the telescopic parts of the two front electric push rods (222) are commonly fixedly connected to a limiting rod (223); the telescopic parts of the two rear electric push rods (222) are commonly fixedly connected to another limiting rod (223).

9. An adjustable circuit board dryer according to claim 2, characterized in that: It also includes a water wiping belt (311); the left mounting plate (132) is connected to the water wiping belt (311).

10. An adjustable circuit board dryer according to claim 9, characterized in that: The device also includes a fixed plate (321), a connecting frame (322), round rods (323), a DC motor (324), a rectangular exhaust pipe (325) and a second air supply pipe (326); the water-wiping belt (311) is a conveyor belt structure; the left mounting plate (132) is fixedly connected to the fixed plate (321); the fixed plate (321) is fixedly connected to the connecting frame (322); the connecting frame (322) is rotatably connected to two round rods (323), and all the round rods (323) are rotatably connected to the water-wiping belt (311); the connecting frame (322) is fixedly connected to the DC motor (324), and the output shaft of the DC motor (324) is fixedly connected to the corresponding round rod (323); the fixed plate (321) is fixedly connected to the rectangular exhaust pipe (325); the rectangular exhaust pipe (325) is provided with a plurality of air outlet circular holes (32501); and the rectangular exhaust pipe (325) is connected to at least one second air supply pipe (326).

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