Printed circuit board drying device

Abstract

The utility model discloses a printed circuit board drying device, and relates to the field of PCB drying devices. The drying box comprises a drying box main body, a drying assembly is arranged in the drying box main body, the drying assembly comprises a rotating rod, a chain wheel is arranged on the outer side of the rotating rod, a plurality of supporting rods are arranged on the chain wheel, a plurality of sets of mounting mechanisms are arranged on the supporting rods, and each mounting mechanism comprises a mounting frame. Through the arrangement of the drying assembly, the mounting mechanism and the mounting frames, a plurality of PCBs can be dried at the same time, efficiency is improved, meanwhile, the motor drives the rotating rod and the chain wheel to rotate, the supporting rod and the mounting frames are driven to move through the chain, it is ensured that the PCBs are evenly heated in the drying process, and the drying efficiency is improved. The flow guide pipe is communicated with the external air heater, hot air is transmitted to the first air outlet strip and the second air outlet strip, the front face and the back face of the PCB are evenly dried, and the problem that in the prior art, the single-side drying effect is not consistent is solved.

Description

Technical Field

[0001] The utility model relates to the field of PCB board drying devices, in particular to a printed circuit board drying device. Background Art

[0002] PCB board drying devices are indispensable equipment in the electronics industry, mainly including ovens, etc. These devices use hot air circulation or continuous heating to efficiently and evenly remove moisture and residue from PCB boards, improve their stability and reliability, and meet large-scale production needs. When selecting drying equipment, it is necessary to customize solutions based on the characteristics of the PCB boards and production requirements, and consider the energy saving, stability and ease of operation of the equipment.

[0003] After searching, the application number is: 202123385268.6, a printed circuit board drying device, as a comparative document of the utility model, it is proposed in the comparative document to use a motor to drive the PCB storage rack to rotate to achieve uniform drying of the PCB board, but there is a problem therein. Since the motor rotates the PCB storage rack and the PCB board thereon, the contact flow rate between the windward side of the PCB board and the outside air is slower than the air flow rate on the leeward side of the PCB board, resulting in differences in the drying rate and effect of the front and back sides of the PCB board, thereby reducing the drying effect and drying efficiency of the PCB board. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a printed circuit board drying device to solve the technical problem of inconsistent drying effects on the front and back sides of the PCB board in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a printed circuit board drying device, comprising a drying box main body, a drying assembly is arranged inside the drying box main body, the drying assembly comprises a rotating rod, a sprocket is arranged on the outer side of the rotating rod, a plurality of support rods are arranged on the sprocket, a plurality of mounting mechanisms are arranged on the support rods, the mounting mechanisms comprise a mounting frame, a mounting groove is provided on the inner side of the mounting frame, the mounting frame is fixedly connected to the support rods through a connecting hoop, a motor is arranged on the top of the rotating rod, a first air outlet strip and a second air outlet strip are respectively arranged on both sides of the inner wall of the drying box main body, and a guide pipe is arranged on both sides of the drying box main body.

[0006] By adopting the above technical solution, the PCB board is slid into the installation groove of the installation frame and fixed by the limit block. The device realizes stable loading of the PCB board. The setting of the installation frame enables the PCB board to be firmly clamped and will not shift during the drying process. At the same time, the motor in the device drives the rotating rod and the sprocket to rotate, and the support rod and the installation frame are driven by the chain to continuously move the position, ensuring that the PCB board can be evenly heated during the drying process, avoiding the problem of local overheating or insufficient drying.

[0007] Furthermore, the installation frame is an overall "C"-shaped structure, and the cross-section of the installation groove is a "U"-shaped structure for accommodating the circuit board. The bottom surface of the installation frame is provided with a through groove for draining waste liquid.

[0008] By adopting the above technical solution, the circuit board can be stably supported and fixed, and the circuit board can be prevented from shifting or falling off during the drying process, thereby ensuring the stability and safety of the drying process. At the same time, the cross-section of the mounting groove is a "U"-shaped structure, which not only facilitates the installation and fixation of the circuit board, but also effectively prevents the circuit board from shaking during the drying process.

[0009] Furthermore, limiting blocks are provided on both sides of the inner wall of the installation slot. The cross section of the limiting blocks is a triangular structure and is made of rubber, and is used to limit the position of the circuit board inside the installation slot.

[0010] By adopting the above technical solution, the limit block can effectively limit the position of the circuit board in the installation groove, preventing the circuit board from moving or tilting during the drying process, which ensures that the circuit board can be stably maintained in the correct position, improving the stability of the drying process and the quality of the circuit board.

[0011] Furthermore, the plurality of support rods are arranged linearly and equidistantly along the length line of the chain, and the plurality of groups of mounting mechanisms are arranged linearly and equidistantly along the length line of the support rods.

[0012] By adopting the above technical solution, it is ensured that each support rod can bear the force evenly, thereby improving the structural stability and bearing capacity of the entire drying assembly.

[0013] Furthermore, the flow guide pipe is connected to an external hot air blower through an air pump, and the flow guide pipe is connected to the first air outlet strip and the second air outlet strip.

[0014] By adopting the above technical solution, a continuous and stable supply of hot air can be ensured. This connection method enables the hot air to be efficiently transmitted to the inside of the drying box, providing the necessary heat source for the drying process, thereby effectively improving the drying efficiency.

[0015] Furthermore, the air outlets of the first air outlet strip and the second air outlet strip are both arranged obliquely, the first air outlet strip is used to dry the front side of the circuit board, and the second air outlet strip is used to dry the back side of the circuit board.

[0016] By adopting the above technical solution, the hot air can cover the circuit board more comprehensively, thereby improving the drying effect. The oblique air outlet can ensure that the hot air blows toward the circuit board at a wider angle, so that the hot air can be more evenly distributed on the surface of the circuit board, avoiding drying dead corners.

[0017] Furthermore, an air outlet is provided on the top of the drying box body, and an outer door is rotatably connected to the front side of the drying box body through a hinge.

[0018] By adopting the above technical solution, the air outlet can effectively discharge the heat and moisture generated during the drying process, which helps to maintain air circulation inside the drying box and prevent the accumulation of heat and moisture, thereby ensuring the stability of the drying environment and the quality of circuit board drying.

[0019] In summary, the utility model mainly has the following beneficial effects:

[0020] The utility model realizes stable installation of the PCB board by sliding the PCB board into the installation groove and fixing it with a limit block through a drying component and an installation mechanism. At the same time, the provision of multiple groups of installation frames enables multiple PCB boards to be dried simultaneously, thereby improving efficiency. At the same time, a motor drives the rotating rod and the sprocket to rotate, and the support rod and the installation frame are driven to move through the chain, thereby ensuring that the PCB board is evenly heated during the drying process. By connecting the air guide pipe with an external hot air blower, the hot air is transmitted to the first air outlet strip and the second air outlet strip, thereby realizing even drying of the front and back sides of the PCB board, thereby avoiding the problem of inconsistent drying effect on one side in the traditional technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the cross-sectional top view of the structure of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the installation mechanism of the utility model;

[0025] Figure 5 It is a bottom view structural diagram of the installation mechanism of the utility model.

[0026] In the figure: 1. Drying box body; 2. Guide pipe; 3. Drying assembly; 301. Rotating rod; 302. Sprocket; 303. Support rod; 304. First air outlet strip; 305. Second air outlet strip; 306. Chain; 4. Mounting mechanism; 401. Mounting frame; 402. Connecting hoop; 403. Mounting slot; 404. Limiting block; 405. Through slot; 5. External door; 6. Motor; 7. Air outlet. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0030] The following describes an embodiment of the utility model based on its overall structure.

[0031] A printed circuit board drying device, such as Figure 1-Figure 5As shown, it includes a drying box body 1, a drying assembly 3 is arranged inside the drying box body 1, and the drying assembly 3 includes a rotating rod 301, a sprocket 302 is arranged on the outer side of the rotating rod 301, a plurality of support rods 303 are arranged on the sprocket 302, and a plurality of mounting mechanisms 4 are arranged on the support rods 303. The mounting mechanism 4 includes a mounting frame 401, a mounting groove 403 is opened on the inner side of the mounting frame 401, and the mounting frame 401 is fixedly connected to the support rod 303 through a connecting hoop 402. A motor 6 is arranged on the top of the rotating rod 301. A first air outlet strip 304 and a second air outlet strip 305 are respectively arranged on both sides of the inner wall, and a guide pipe 2 is arranged on both sides of the drying box body 1. During the drying process, by connecting the guide pipe 2 with the external hot air blower, the device can transmit hot air to the first air outlet strip 304 and the second air outlet strip 305. The two air outlet strips are respectively located on both sides of the inner wall of the drying box body 1, which can effectively and evenly dry the front and back sides of the PCB board, solving the problem of inconsistent drying effects on both sides due to the large air flow rate on one side in traditional drying technology.

[0032] See also Figure 4 , Figure 5 The mounting frame 401 is in a “C” shape as a whole, and the cross section of the mounting groove 403 is in a “U” shape, which is used to accommodate the circuit board. A through groove 405 is provided on the bottom surface of the mounting frame 401 for draining the waste liquid. The through groove 405 provided on the bottom surface of the mounting frame 401 can drain the waste liquid on the circuit board in time to avoid the accumulation of waste liquid and damage to the circuit board, thereby further ensuring the drying effect and the quality of the circuit board.

[0033] See also Figure 4 , Figure 5 Limiting blocks 404 are arranged on both sides of the inner wall of the installation groove 403. The cross section of the limiting block 404 is a triangular structure, and the material is rubber, which is used to limit the position of the circuit board inside the installation groove 403. The cross section of the limiting block 404 is a triangular structure, so that the limiting block can contact the circuit board more closely, further enhancing the fixing effect. The limiting block 404 is made of rubber material, which not only has a certain elasticity and can avoid hard damage to the circuit board, but also has good wear resistance and corrosion resistance, thereby extending the service life of the device.

[0034] See also Figure 1 , Figure 2 , Figure 3, multiple support rods 303 are arranged in an equidistant linear manner along the length line of the chain 306, and multiple groups of mounting mechanisms 4 are arranged in an equidistant linear manner along the length line of the support rods 303, ensuring that each support rod 303 can bear the force evenly, thereby improving the structural stability and carrying capacity of the entire drying assembly 3. At the same time, the equidistant arrangement is also beneficial to the synchronous and smooth movement of each support rod 303 when the motor 6 drives the rotating rod 301 and the sprocket 302, thereby further ensuring the uniformity and stability of the drying process. At the same time, multiple groups of mounting mechanisms 4 are also arranged in an equidistant linear manner along the length line of the support rods 303, which means that each mounting mechanism 4 can obtain the same space and resources, so that each installed circuit board can obtain a uniform drying effect.

[0035] See also Figure 1 , Figure 2 , Figure 3 The guide pipe 2 is connected to the external hot air blower through the air pump. The guide pipe 2 is connected to the first air outlet strip 304 and the second air outlet strip 305, which can ensure the continuous and stable supply of hot air. This connection method enables the hot air to be efficiently transmitted to the inside of the drying box, providing the necessary heat source for the drying process, thereby effectively improving the drying efficiency. At the same time, the guide pipe 2 is connected to the first air outlet strip 304 and the second air outlet strip 305, which means that the hot air can be evenly distributed to different positions of the drying box. The hot air can be blown out from the two air outlet strips at the same time to dry the circuit board on both sides, which not only improves the drying speed, but also ensures the uniformity of the circuit board drying, thereby further improving the product quality.

[0036] See also Figure 1 , Figure 2 , Figure 3 The air outlets of the first air outlet strip 304 and the second air outlet strip 305 are both arranged obliquely. The first air outlet strip 304 is used to dry the front side of the circuit board, and the second air outlet strip 305 is used to dry the back side of the circuit board, which is beneficial for the hot air to cover the circuit board more comprehensively, thereby improving the drying effect. The oblique air outlet can ensure that the hot air blows to the circuit board at a wider angle, so that the hot air can be more evenly distributed on the surface of the circuit board, avoiding drying dead corners. At the same time, the first air outlet strip 304 is used to dry the front side of the circuit board, and the second air outlet strip 305 is used to dry the back side of the circuit board. This double-sided drying method can significantly improve the drying efficiency. Simultaneous double-sided drying can not only shorten the drying time, but also ensure that both the front and back sides of the circuit board can achieve the ideal drying effect, thereby ensuring the quality and performance of the circuit board.

[0037] See also Figure 1 , Figure 2An air outlet 7 is provided at the top of the drying box body 1, and an outer door 5 is rotatably connected to the front side of the drying box body 1 through a hinge. The outer door 5 rotatably connected to the front side of the drying box body 1 through a hinge is convenient for the staff to open and close, and to put in and take out the circuit board, which not only improves the convenience of operation, but also ensures the safety and sealing of the drying box during use, and prevents external dust and moisture from entering the interior of the drying box and affecting the drying effect.

[0038] The implementation principle of the utility model is as follows: first, the PCB board is slid into the interior of the installation slot 403, and the limit block 404 is used to limit the PCB board, so that the PCB board is clamped and fixed with the installation frame 401, and then multiple PCB boards are installed in the interior of multiple groups of installation frames 401 in sequence, and then the motor 6 drives the rotating rod 301 and the sprocket 302 to rotate, and the outer chain 306 is used to drive the multiple support rods 303 and the multiple installation frames 401 to move their positions. As the PCB board gradually moves in position, the air guide pipe 2 is connected to the external hot air blower, and hot air is transmitted to the interior of the air guide pipe 2 and the first air outlet strip 304 and the second air outlet strip 305, and then the first air outlet strip 304 and the second air outlet strip 305 on both sides of the inner wall of the drying box body 1 are used to dry the front and back sides of the PCB board, thereby avoiding the situation in the traditional technology where the air flow rate on one side of the PCB board is large, resulting in inconsistent baking effects on the two sides of the board surface, thereby improving the convenience of use of the drying device and the drying effect on the PCB board.

[0039] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0040] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A printed circuit board drying device, characterized in that: The invention comprises a drying box body (1), wherein a drying assembly (3) is arranged inside the drying box body (1), wherein the drying assembly (3) comprises a rotating rod (301), wherein a sprocket (302) is arranged on the outer side of the rotating rod (301), wherein a plurality of support rods (303) are arranged on the sprocket (302), wherein a plurality of mounting mechanisms (4) are arranged on the support rods (303), wherein the mounting mechanisms (4) comprise a mounting frame (401), wherein a mounting groove (403) is arranged on the inner side of the mounting frame (401), wherein the mounting frame (401) is fixedly connected to the support rods (303) via a connecting hoop (402), wherein a motor (6) is arranged at the top end of the rotating rod (301), wherein a first air outlet strip (304) and a second air outlet strip (305) are respectively arranged on both sides of the inner wall of the drying box body (1), and wherein a flow guide pipe (2) is arranged on both sides of the drying box body (1).

2. The printed circuit board drying device according to claim 1, characterized in that: The installation frame (401) is in a "C"-shaped structure as a whole, and the cross-section of the installation groove (403) is in a "U"-shaped structure for accommodating a circuit board. A through groove (405) is provided on the bottom surface of the installation frame (401) for draining waste liquid.

3. The printed circuit board drying device according to claim 1, characterized in that: Limiting blocks (404) are arranged on both sides of the inner wall of the installation slot (403); the cross section of the limiting blocks (404) is a triangular structure and is made of rubber, and is used to limit the position of the circuit board inside the installation slot (403).

4. The printed circuit board drying device according to claim 1, characterized in that: The plurality of support rods (303) are arranged linearly and equidistantly along the length line of the chain (306), and the plurality of groups of mounting mechanisms (4) are arranged linearly and equidistantly along the length line of the support rod (303).

5. The printed circuit board drying device according to claim 1, characterized in that: The flow guide pipe (2) is connected to an external hot air blower via an air pump, and the flow guide pipe (2) is connected to a first air outlet strip (304) and a second air outlet strip (305).

6. The printed circuit board drying device according to claim 1, characterized in that: The air outlets of the first air outlet strip (304) and the second air outlet strip (305) are both arranged obliquely; the first air outlet strip (304) is used to dry the front side of the circuit board, and the second air outlet strip (305) is used to dry the back side of the circuit board.

7. The printed circuit board drying device according to claim 1, characterized in that: An air outlet (7) is provided on the top of the drying box body (1), and an outer door (5) is rotatably connected to the front side of the drying box body (1) via a hinge.

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