PCB plate post-electroplating drying device

Abstract

This disclosure provides a PCB board drying device after electroplating, belonging to the technical field of PCB board drying devices. It includes two circular tubes with a plurality of equally spaced circular holes on their outer peripheral walls. A water-absorbing sleeve is fitted over the middle of each tube, and two drive rollers are symmetrically arranged on their outer peripheral sides. Limiting plates are rotatably fitted at both ends of the circular tubes and at the corresponding ends of the two drive rollers, and are connected to the corresponding drive rollers via a transmission mechanism. In use, this improved PCB board drying device uses the rotating water-absorbing sleeve to absorb and wipe the water from the PCB board surface. Simultaneously, a high-speed airflow carries water out of the holes in the water-absorbing sleeve, and the sleeve itself cleans itself, ensuring that the contact area between the water-absorbing sleeve and the PCB board remains relatively dry and clean. This prevents water stains from remaining on the PCB board after the water absorption process, which could affect the subsequent drying effect.

Description

Technical Field

[0001] This utility model relates to the technical field of PCB board drying devices, specifically to a drying device for PCB boards after electroplating. Background Technology

[0002] In the PCB manufacturing process, when there are many orders, there is often a large backlog between processes. Often, the production cannot be carried over to the next process in time. This results in the electroplated boards being stored for a long time in an acidic workshop environment. Therefore, after the electroplating of the PCB board is completed, the electroplated PCB board is usually subjected to anti-oxidation treatment, and the drying treatment of the PCB board is an important process.

[0003] Existing PCB boards typically use PVA absorbent sponge rollers on both sides of the PCB board to absorb water. However, as the moisture inside the sponge rollers increases, the water absorption performance of the sponge rollers may decrease. Furthermore, relying solely on the contact between the sponge rollers and the PCB board to absorb water may leave water stains on the PCB board, affecting the subsequent drying effect. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to provide a desiccant device for PCB board after electroplating, which can effectively prevent water stains from remaining on the PCB board after the water absorption operation is completed, thus affecting the subsequent drying effect of the PCB board.

[0005] To solve the above problems, this utility model provides a drying device for PCB board after electroplating, including: two round tubes, with a number of round holes evenly spaced on their outer peripheral walls, a water-absorbing sleeve fitted in the middle of the tubes, and two driving rollers symmetrically arranged on their outer peripheral sides. Both ends of the round tubes and the ends of the corresponding two driving rollers are rotatably fitted with limiting plates, which are connected to the corresponding two driving rollers through a transmission mechanism.

[0006] Two arc-shaped plates are symmetrically arranged on the outer periphery of the corresponding absorbent sleeve. Their inner arc walls are in contact with the outer periphery of the corresponding absorbent sleeve, and an air extraction mechanism is provided between them to extract the gas inside the sponge sleeve.

[0007] An adjustment mechanism is located on the outer periphery of the two corresponding limit plates and is used to adjust the distance between the two sponge sleeves.

[0008] Preferably, the absorbent sleeve includes a sponge sleeve, the inner peripheral wall of which contacts the outer peripheral wall of the corresponding round tube, and both ends of which are fixedly equipped with support rings, and the inner ring wall of the support ring is fixedly connected to the corresponding round tube by an adhesive.

[0009] Preferably, the air extraction mechanism includes a rectangular box, which is fixedly installed between two corresponding arc-shaped plates, and the open end of the rectangular box is in contact with the outer peripheral wall of the water absorption sleeve. Its two ends are respectively fixedly connected to two corresponding limiting plates. Two air pumps are symmetrically fixedly installed inside the rectangular box, and the exhaust end of each air pump extends to the outside of the rectangular box.

[0010] Preferably, the transmission mechanism includes four main gears, each fixedly mounted on the corresponding end of the corresponding drive roller, and the two corresponding main gears are connected by a transmission gear meshing with each other. The transmission gear is fixedly sleeved on the corresponding end of the corresponding round tube.

[0011] Preferably, the outer periphery of the transmission gear and the two corresponding main gears is fitted with a housing, and the housing is fixedly connected to the corresponding limiting plate.

[0012] Preferably, the adjustment mechanism includes two supports, which are slidably sleeved on the outer periphery of the corresponding two limiting plates. Two threaded sleeves are symmetrically and rotatably installed on the upper and lower sides of the supports. A driver is fixedly installed in the middle of the upper and lower sides of the supports, and the two driving ends of the driver are fixedly sleeved on the outer periphery of the corresponding two threaded sleeves. A threaded rod is installed in the threaded sleeve, and the threaded rod is rotatably connected to the corresponding limiting plate.

[0013] This utility model has the following beneficial effects:

[0014] When in use, this improved PCB board drying device uses a rotating absorbent sleeve to dry and wipe the surface of the PCB board. At the same time, a high-speed airflow carries water out of the holes in the absorbent sleeve and the absorbent sleeve itself cleans itself, keeping the contact area between the absorbent sleeve and the PCB board relatively dry and clean. This avoids water stains remaining on the PCB board after the water absorption operation, which would affect the subsequent drying effect of the PCB board. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This is a perspective view of the water-absorbing sleeve and drive roller of this utility model;

[0018] Figure 3 This is a right view of the internal structure of part of the absorbent sleeve and part of the circular tube of this utility model;

[0019] Figure 4 This is a perspective view of the main gear and transmission gear of this utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged view of the structure at point A in the middle.

[0021] The reference numerals in the attached figures are as follows:

[0022] 1. Round tube; 2. Absorbent sleeve; 21. Sponge sleeve; 22. Support ring; 3. Drive roller; 4. Air extraction mechanism; 41. Rectangular box; 42. Air pump; 5. Arc plate; 6. Transmission mechanism; 61. Main gear; 62. Transmission gear; 63. Outer shell; 7. Adjustment mechanism; 71. Bracket; 72. Threaded sleeve; 73. Driver; 74. Threaded rod; 8. Limiting plate; 9. Round hole. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] See also Figure 1 , Figure 2 and Figure 3 As shown, according to an embodiment of the present invention, a PCB board electroplating drying device is provided, comprising: a circular tube 1, of which there are two, with a plurality of circular holes 9 evenly spaced on its outer peripheral wall, a water-absorbing sleeve 2 sleeved in the middle of the tube, and two driving rollers 3 symmetrically arranged on its outer peripheral side, and a limiting plate 8 rotatably sleeved on both ends of the circular tube 1 and the two ends of the corresponding two driving rollers 3, and the circular tube 1 and the corresponding two driving rollers 3 are connected by a transmission mechanism 6.

[0028] Two arc-shaped plates 5 are symmetrically arranged on the outer periphery of the corresponding water-absorbing sleeve 2. Their inner arc walls are in contact with the outer periphery of the corresponding water-absorbing sleeve 2. An air extraction mechanism 4 is provided between them to extract the gas inside the sponge sleeve 21.

[0029] The adjustment mechanism 7 is located on the outer periphery of the two corresponding limit plates 8 and is used to adjust the distance between the two sponge sleeves 21.

[0030] In this embodiment, when the improved PCB board drying device is used, the spacing between the drive rollers 3 is first adjusted according to the thickness of the PCB board by the adjustment mechanism 7. Then, a roller conveyor is used to push the PCB board through the space between several drive rollers 3. During the process of the PCB board passing through the space between the drive rollers 3, due to the friction between the drive rollers 3 and the PCB board, the drive rollers 3 rotate as the PCB board moves. The transmission mechanism 6 drives the round tube 1 to rotate quickly in the opposite direction, thereby causing the water-absorbing sleeve 2 to rotate between the two arc plates 5. While absorbing the water on the PCB board, the surface of the PCB board is wiped.

[0031] During the rotation of the water-absorbing sleeve 2, the air extraction mechanism 4 continuously extracts the gas inside the holes of the water-absorbing sleeve 2. At the same time, external gas flows into the round tube 1 from the openings at both ends of the round tube 1 and passes through the round hole 9 into the holes of the water-absorbing sleeve 2 to replenish the gas lost in the holes of the water-absorbing sleeve 2. Thus, the water inside the holes of the water-absorbing sleeve 2 is continuously sucked out through the rapid outflow of gas from the holes of the water-absorbing sleeve 2, and the debris attached to the water-absorbing sleeve 2 is cleaned at the same time, so as to gradually complete the drying and self-cleaning of the water-absorbing sleeve 2.

[0032] In summary, when this improved PCB board drying device is used, the rotating absorbent sleeve 2 completes the water absorption and wiping of the PCB board surface. At the same time, the high-speed airflow carries out the water in the holes of the absorbent sleeve 2 and the absorbent sleeve 2 self-cleans, so that the contact area between the absorbent sleeve 2 and the PCB board is always kept relatively dry and clean. This avoids water stains remaining on the PCB board after the water absorption operation, which would affect the subsequent drying effect of the PCB board.

[0033] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the absorbent sleeve 2 includes a sponge sleeve 21, the inner circumferential wall of which is in contact with the outer circumferential wall of the corresponding round tube 1, and both ends of which are fixedly equipped with support rings 22, and the inner ring wall of the support ring 22 is fixedly connected to the corresponding round tube 1 by an adhesive.

[0034] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 3 As shown, the support ring 22 can be set by constraining and limiting the sponge sleeve 21 from both ends, so as to avoid the sponge sleeve 21 bending and deforming during rotation and affecting the use of the device.

[0035] The sponge sleeve 21 is designed so that the absorbent sleeve 2 can absorb residual water on the PCB board without scratching the PCB board due to its high hardness.

[0036] It should be noted that the two ends of the sponge sleeve 21 can be fixed to the support ring 22 with adhesive, and ports are provided on the sponge sleeve 21 to facilitate the disassembly and replacement of the sponge sleeve 21.

[0037] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, the air extraction mechanism 4 includes a rectangular box 41, which is fixedly installed between two corresponding arc plates 5. The open end of the rectangular box 41 is in contact with the outer peripheral wall of the water absorption sleeve 2. Its two ends are fixedly connected to two corresponding limiting plates 8 respectively. Two air pumps 42 are symmetrically fixedly installed inside the rectangular box 41, and the exhaust end of each air pump 42 extends to the outside of the rectangular box 41.

[0038] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 3As shown, during the rotation of the water-absorbing sleeve 2, the air pump 42 starts and continuously extracts the gas from the rectangular box 41 (the air pump 42 can be a diaphragm pump or a liquid circulation pump or other water-resistant pump), so that a negative pressure chamber is continuously formed inside the rectangular box 41. At this time, the gas in the hole on the bottom side of the sponge sleeve 21 flows into the rectangular box 41 to replenish the gas lost in the rectangular box 41. Then, the backflow of the airflow completes the cleaning of the sponge sleeve 21 and carries out the water in the hole of the sponge sleeve 21.

[0039] In a further preferred embodiment of this utility model, such as Figure 1 and Figure 4 As shown, the transmission mechanism 6 includes four main gears 61, which are all fixedly mounted on the corresponding ends of the corresponding drive rollers 3, and the two corresponding main gears 61 are connected by a transmission gear 62. The transmission gear 62 is fixedly sleeved on the corresponding ends of the corresponding round tubes 1.

[0040] In this embodiment, please refer to Figure 1 and Figure 4 As shown, during the rotation of the drive roller 3, the main gear 61 and the transmission gear 62 drive the circular tube 1 to rotate (the diameter of the main gear 61 is larger than the diameter of the transmission gear 62), eliminating the need for an additional drive structure and reducing energy consumption during device use.

[0041] In a further preferred embodiment of this utility model, such as Figure 1 and Figure 4 As shown, the outer periphery of the transmission gear 62 and the two corresponding main gears 61 is fitted with a housing 63, and the housing 63 is fixedly connected to the corresponding limiting plate 8.

[0042] In this embodiment, the outer casing 63 protects the transmission gear 62 and the main gear 61 from contact with external objects, preventing damage to the device.

[0043] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 4 and Figure 5 As shown, the adjustment mechanism 7 includes two brackets 71. The brackets 71 are slidably sleeved on the outer periphery of the corresponding two limiting plates 8. Two threaded sleeves 72 are symmetrically rotatably installed on the upper and lower sides of the brackets 71. Drivers 73 are fixedly installed in the middle of the upper and lower sides of the brackets 71. The two driving ends of the drivers 73 are fixedly sleeved on the outer periphery of the corresponding two threaded sleeves 72. Threaded rods 74 are installed in the internal threads of the threaded sleeves 72. The threaded rods 74 are rotatably connected to the corresponding limiting plates 8.

[0044] In this embodiment, please refer to Figure 1 , Figure 4 and Figure 5As shown, before using the device, start the driver 73 to drive the threaded sleeve 72 to rotate. (The driver 73 is mainly composed of a housing, a motor, a gear transmission structure and two gear rings, which are fixedly sleeved on the outer periphery of the threaded sleeve 72.) The rotating threaded sleeve 72 drives the threaded rod 74 to move up or down, thereby driving the two limit plates 8 to move in opposite directions to adjust the distance between the drive rollers 3, so that the device can be adapted to PCB boards of various sizes.

[0045] Working principle: When this improved PCB board drying device is in use, the PCB board passes between several sponge sleeves 21, and the sponge sleeves 21 rotate synchronously. Thus, the sponge sleeves 21 absorb the residual water on the PCB board and wipe the surface of the PCB board. At the same time, the air pump 42 continuously draws air from the holes at the top of the sponge sleeves 21, and the high-speed airflow backwashes the holes of the sponge sleeves 21 to clean them and carry away the small amount of water in the holes of the sponge sleeves 21.

[0046] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0047] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A drying device for PCB board electroplating, characterized in that, include: There are two circular tubes (1), and several circular holes (9) are equally spaced on their outer peripheral walls. A water-absorbing sleeve (2) is fitted in the middle of the tube, and two drive rollers (3) are symmetrically arranged on the outer peripheral side. Both ends of the circular tube (1) and the two ends of the corresponding drive rollers (3) are rotatably fitted with limiting plates (8), which are connected to the corresponding drive rollers (3) through a transmission mechanism (6). Two arc-shaped plates (5) are symmetrically arranged on the outer periphery of the corresponding water-absorbing sleeve (2), and their inner arc walls are in contact with the outer periphery of the corresponding water-absorbing sleeve (2). An air extraction mechanism (4) is provided between them to extract the gas in the sponge sleeve (21). The adjustment mechanism (7) is located on the outer periphery of the two corresponding limit plates (8) and is used to adjust the distance between the two sponge sleeves (21).

2. The PCB board electroplating drying device according to claim 1, characterized in that: The absorbent sleeve (2) includes a sponge sleeve (21), whose inner circumferential wall is in contact with the outer circumferential wall of the corresponding round tube (1), and both ends of the sponge sleeve (21) are fixedly equipped with support rings (22), and the inner ring wall of the support ring (22) is fixedly connected to the corresponding round tube (1) by adhesive.

3. The PCB board electroplating drying device according to claim 2, characterized in that: The air extraction mechanism (4) includes a rectangular box (41), which is fixedly installed between two corresponding arc plates (5), and the open end of the rectangular box (41) is in contact with the outer peripheral wall of the water absorption sleeve (2). Its two ends are respectively fixedly connected to two corresponding limiting plates (8). Two air pumps (42) are symmetrically fixedly installed inside the rectangular box (41), and the exhaust end of each air pump (42) extends to the outside of the rectangular box (41).

4. The PCB board electroplating drying device according to claim 3, characterized in that: The transmission mechanism (6) includes four main gears (61), which are fixedly installed on the corresponding ends of the corresponding drive rollers (3), and the two corresponding main gears (61) are connected by a transmission gear (62). The transmission gear (62) is fixedly sleeved on the corresponding ends of the corresponding round tubes (1).

5. The PCB board electroplating drying device according to claim 4, characterized in that: The outer periphery of the transmission gear (62) and the corresponding two main gears (61) is fitted with a housing (63), and the housing (63) is fixedly connected to the corresponding limiting plate (8).

6. The PCB board electroplating drying device according to claim 5, characterized in that: The adjustment mechanism (7) includes two brackets (71). The brackets (71) are slidably sleeved on the outer periphery of the corresponding two limiting plates (8). The upper and lower sides of the brackets (71) are symmetrically rotated and installed with two threaded sleeves (72). The middle of the upper and lower sides of the brackets (71) is fixedly installed with a driver (73). The two driving ends of the driver (73) are fixedly sleeved on the outer periphery of the corresponding two threaded sleeves (72). The threaded sleeves (72) are threaded with a threaded rod (74), and the threaded rod (74) is rotatably connected to the corresponding limiting plate (8).

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