Drying device of circuit board

Abstract

The utility model relates to a circuit board drying device, which comprises a drying oven, a slideway and a storage rack, the middle part of the drying oven is provided with a transversely through drying channel, the slideway is arranged in the drying channel, two ends of the slideway are positioned on the outer side of the drying oven, the middle part of the slideway is provided with a groove, the lower end of the storage rack is positioned in the groove, and two ends of the storage rack are provided with protruding support parts. The supporting parts are connected to the upper ends of the sliding ways on the two sides of the groove in a sliding mode, and a plurality of vertical storage grooves are formed in the storage frame. According to the device, the circuit boards can be dried and used according to batches and quantity, convenience and rapidness are achieved, the tedious operation that the oven door of a traditional oven is frequently opened and closed to take and place the circuit boards is changed, and the drying, taking and placing efficiency of the circuit boards is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a drying device for circuit boards. Background Art

[0002] The production process of printed circuit boards involves cutting, pretreatment, transfer printing, etching, and drilling. During these multiple steps, the boards need to be dried to remove moisture, volatile organic compounds, and other substances from the boards, thereby preventing copper foil from falling off or cracking. Drying also improves the adhesion of the board surface, facilitating processes such as electroplating, coating, and text printing. It also prevents problems such as cracking and deformation during use. Currently, an oven is often used to dry the boards between specific processes. The boards are placed sequentially on the shelves in the oven, and the door is closed for timed baking. While the oven can bake a large number of boards at once, the dried boards cannot be transported and processed all at once. Frequent opening and closing of the door and low-power operation of the oven are required, resulting in significant heat loss and making it difficult to ensure that the boards are dry enough to meet processing requirements. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a circuit board drying device, which can realize the drying and use of circuit boards in batches and according to quantity, which is convenient and fast. It changes the tedious operation of frequently opening and closing the door of the traditional drying oven to take and place circuit boards, and improves the efficiency of drying and taking and placing circuit boards.

[0004] The technical solution of the utility model is: a drying device for circuit boards, comprising an oven, a slide and a storage rack, wherein the middle part of the oven is a drying channel running horizontally through, the slide is installed in the drying channel, the two ends of the slide are located outside the oven, the middle part of the slide is a groove, the lower end of the storage rack is located in the groove, and protruding support parts are provided at both ends of the storage rack, the support parts are slidably connected to the upper ends of the slide on both sides of the groove, and a plurality of vertical storage slots are provided in the storage rack.

[0005] Furthermore, the oven includes a box body, a heater, a ventilation duct and an exhaust fan, the drying channel is located in the box body, the heater is installed at the upper end of the box body, the ventilation duct is installed on the heater, and the exhaust fan is installed in the ventilation duct, and the ventilation duct, heater and drying channel are connected.

[0006] Furthermore, an air filter is provided on the ventilation duct.

[0007] Furthermore, soft door curtains are provided at both ends of the box body, and the soft door curtains can close the drying channel and the groove.

[0008] Furthermore, a plurality of rollers are provided on the upper ends of the slideways at both ends of the groove, and the support portion is slidably connected to the upper ends of the rollers.

[0009] Furthermore, a non-return structure is provided on the side of the groove, and the storage rack can slide toward the box body and abut against and cross the non-return structure.

[0010] Furthermore, the non-return structure includes a non-return plate and a spring. A mounting groove is provided on the side of the groove. The front of the non-return plate is hinged up and down in the mounting groove. The inner side surface of the rear of the non-return plate is connected to the side surface of the mounting groove by a spring. The outer side surface of the non-return plate gradually protrudes from the side surface of the groove in the direction toward the box body.

[0011] Furthermore, the storage rack is composed of a rectangular frame, a limit frame and a support frame. The support part is located at both ends of the rectangular frame. The limit frame and the support frame are both U-shaped and connected to the lower end of the rectangular frame. The limit frame and the support frame are perpendicular to each other in the horizontal plane. The limit frame is located above the support frame. There are multiple limit frames and they are arranged linearly.

[0012] Furthermore, there are multiple support frames and they are arranged linearly.

[0013] Furthermore, handles are provided on both sides of the rectangular frame.

[0014] Compared with the existing technology, the advantages of the present invention are: the oven can provide a steady stream of hot air to dry the circuit boards inside the oven, and the circuit boards are neatly loaded in multiple storage slots of the storage rack, which are separated from each other, which is conducive to the circulation of hot air; after a certain number of circuit boards are loaded, the circuit boards are placed on the slide in units of storage racks and pushed into the oven, and multiple storage racks are pressed against each other and sent into the oven in turn. After the slide is fully loaded, each time a new storage rack is pushed in, a storage rack will be pushed out of the oven at the rear end of the slide. The circuit boards in the storage rack have been fully dried and can be sent to the next process; through this device, the circuit boards can be dried and used in batches and according to quantity, which is convenient and fast, and changes the cumbersome operation of frequently opening and closing the door of the traditional oven to take out and put in the circuit boards, thereby improving the drying and taking-in efficiency of the circuit boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model after the soft door curtain is removed;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a structural diagram of the storage rack of the utility model;

[0020] Figure 5 This is a top view of the storage rack of the utility model;

[0021] Figure 6 This is the main view of the storage rack of the utility model.

[0022] Among them: 1. Box body; 101. Drying channel; 2. Heater; 3. Ventilation duct; 301. Air filter; 4. Exhaust fan; 5. Slide; 501. Groove; 502. Mounting slot; 6. Storage rack; 601. Rectangular frame; 602. Limit frame; 603. Support frame; 604. Handle; 7. Roller; 8. Spring; 9. Check plate; 10. Soft door curtain. DETAILED DESCRIPTION

[0023] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0024] like Figure 1-6 As shown, a drying device for circuit boards includes an oven, a slide 5 and a storage rack 6. The middle part of the oven is a drying channel 101 that runs horizontally through the oven. The slide 5 is installed in the drying channel 101. The two ends of the slide 5 are located outside the oven. The middle part of the slide 5 is a groove 501. The lower end of the storage rack 6 is located in the groove 501. Both ends of the storage rack 6 are provided with protruding support parts, which are slidably connected to the upper end of the slide 5 on both sides of the groove 501. The storage rack 6 is provided with multiple vertical storage slots. The oven can provide a continuous flow of hot air to dry the circuit boards inside the oven, and the circuit boards are neatly loaded in the multiple storage slots of the storage rack 6. They are separated from each other, which is conducive to the circulation of hot air; after a certain number of circuit boards are loaded, the circuit boards are placed on the slide 5 in units of storage racks 6 and pushed into the oven. Multiple storage racks 6 are pressed against each other and sent into the oven in turn. After the slide 5 is fully loaded, each time a new storage rack 6 is pushed in, a storage rack 6 at the rear end of the slide 5 will be pushed out of the oven. The circuit boards in the storage rack 6 have been fully dried and can be sent to the next process; this device can realize the drying and use of circuit boards in batches and according to quantity, which is convenient and fast, and changes the cumbersome operation of frequently opening and closing the door of the traditional oven to take out and put in circuit boards, thereby improving the drying and taking-in efficiency of circuit boards.

[0025] In the above embodiment, the drying oven includes a housing 1, a heater 2, a ventilation duct 3, and an exhaust fan 4. The drying duct 101 is located within the housing 1, the heater 2 is mounted at the upper end of the housing 1, the ventilation duct 3 is mounted on the heater 2, and the exhaust fan 4 is mounted within the ventilation duct 3. The ventilation duct 3, heater 2, and drying duct 101 are interconnected. External air enters the ventilation duct 3 under the action of the exhaust fan 4 and is fully heated by the electric heating rod in the heater 2 before entering the housing 1 to form hot air. The ventilation duct 3 is equipped with an air filter 301 to prevent dust or debris from entering the device, which could affect the normal operation of the heater 2 or adhere to the circuit board, affecting subsequent processing and final performance of the circuit board. Soft door curtains 10 are provided at both ends of the box body 1, and the soft door curtains 10 can close the drying channel 101 and the groove 501; the soft door curtains 10 are cut according to the shape of the drying channel 101 and the groove 501 after being combined, forming a drying area with a certain degree of sealing for the middle part of the box body 1, and the hot air can only escape from the gap between the soft door curtain 10 and the slide 5 and the box body 1 to prevent continuous heat loss; at the same time, the heater 2 and the exhaust fan 4 do not need to operate at high power continuously. After providing enough hot air in the box body 1, the heater 2 and the exhaust fan 4 can be shut down or run at idle speed. The drying area between the front and rear soft door curtains 10 has a heat preservation function, which reduces a lot of energy consumption; the soft door curtain 10 can also be designed as an integrated design to avoid the situation where the soft door curtain 10 is too light and easily blown by the wind and causes heat loss due to the split design, and it is also convenient for the storage rack 6 to be manually adjusted after entering and exiting, reducing the number of operations. A plurality of rollers 7 are provided on the upper ends of the slides 5 at both ends of the groove 501, and the support portion is slidably connected to the upper ends of the rollers 7; after the storage rack 6 is mounted on the slide 5, it is pushed more smoothly, preventing the situation where there are too many storage racks 6 on the slide 5 and it is difficult to push.

[0026] In the above embodiment, a non-return structure is provided on the side of the groove 501, and the storage rack 6 can slide toward the box body 1 and abut against and pass over the non-return structure; after the new storage rack 6 is pushed horizontally into the groove 501 and passes over the non-return structure, the non-return structure stops and limits the storage rack 6, preventing the operator from accidentally touching or slipping when moving the soft door curtain 10 or taking out the storage rack 6 at the rear end of the slide 5, thereby preventing the storage rack 6 from falling to the bottom plate and damaging the circuit board, thereby providing safety protection for the circuit board. The non-return structure includes a non-return plate 9 and a spring 8. A mounting groove 502 is provided on the side of the groove 501. The front part of the non-return plate 9 is hinged in the mounting groove 502 up and down. The inner side surface of the rear part of the non-return plate 9 is connected to the side surface of the mounting groove 502 by a spring 8. The outer side surface of the non-return plate 9 gradually protrudes from the side surface of the groove 501 in the direction toward the box body 1; the side surface of the front end of the non-return plate 9 is located in the mounting groove 502. After the storage rack 6 enters the groove 501 laterally, its two sides will open the non-return plate 9 and compress the spring 8. After the two sides of the storage rack 6 completely pass over the non-return plate 9, the spring 8 pushes the non-return plate 9 to reset, jams the storage rack 6, and limits the storage rack 6 laterally; when the storage rack 6 needs to be temporarily taken out, the storage rack 6 can be directly lifted without being affected by the non-return structure. The storage rack 6 consists of a rectangular frame 601, a limiting frame 602, and a support frame 603. The support portion is located at both ends of the rectangular frame 601. The limiting frame 602 and the support frame 603 are both U-shaped and connected to the lower end of the rectangular frame 601. The limiting frame 602 and the support frame 603 are perpendicular to each other in the horizontal plane. The limiting frame 602 is located above the support frame 603. There are multiple limiting frames 602 and they are arranged in a linear manner. The support frame 603 can support the circuit board, while the limiting frame 602 can separate the circuit boards. With the combination of the two frames, the storage rack 6 is ventilated on all sides, providing sufficient drying and heating area for the circuit boards. There are multiple supporting frames 603 and they are arranged in a linear manner, forming a loading platform, providing stable support for the circuit boards. Handles 604 are provided on both sides of the rectangular frame 601 to facilitate the transportation of the storage rack 6.

[0027] Description of the working method of this utility model:

[0028] After the circuit boards are coated with solder mask ink and irradiated with UV light, photopolymerization occurs to form a high molecular weight polymer. The sodium carbonate solution in the unpolymerized ink is then removed by development, and the circuit boards are finally sent for drying. The circuit boards are inserted into the storage slots one by one. Each storage rack 6 can hold up to fourteen circuit boards. A fully loaded storage rack 6 is ventilated on all sides, and the circuit boards are arranged in parallel, with ample heating area between them. Multiple storage racks 6 loaded with circuit boards are sequentially placed on the slide 5 and pushed into the box 1. Under the closure of the soft door curtain 10, the hot air in the box 1 heats and dries the circuit boards, completely hardening the ink in the circuit boards. When the slide 5 in the box 1 is fully loaded with storage racks 6, each time a new storage rack 6 is placed, a storage rack 6 with dried circuit boards is sent out of the box 1 to the end of the slide 5, where it is removed by staff for the next step of text printing. During the drying process of the circuit boards, the loading quantity of the circuit boards, the drying time, etc. are all manually controlled according to the thickness and size of the circuit boards. The drying time can also be controlled by adding a timer to improve the automation capability of the device.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A circuit board drying device, comprising an oven, a slide and a storage rack, characterized in that: The middle part of the oven is a drying channel that runs horizontally through the middle part, and the slide is installed in the drying channel. The two ends of the slide are located outside the oven. The middle part of the slide is a groove, and the lower end of the storage rack is located in the groove. Protruding support parts are provided at both ends of the storage rack, and the support parts are slidably connected to the upper ends of the slide on both sides of the groove. A plurality of vertical storage slots are provided in the storage rack.

2. The circuit board drying device according to claim 1, characterized in that: The drying oven includes a box body, a heater, a ventilation duct and an exhaust fan. The drying channel is located in the box body, the heater is installed at the upper end of the box body, the ventilation duct is installed on the heater, and the exhaust fan is installed in the ventilation duct. The ventilation duct, heater and drying channel are connected.

3. The circuit board drying device according to claim 2, characterized in that: An air filter is provided on the ventilation duct.

4. The circuit board drying device according to claim 2, characterized in that: Soft door curtains are provided at both ends of the box body, and the soft door curtains can close the drying channel and the groove.

5. The circuit board drying device according to claim 1, characterized in that: A plurality of rollers are provided on the upper ends of the slideways at both ends of the groove, and the support portion is slidably connected to the upper ends of the rollers.

6. The circuit board drying device according to claim 1, characterized in that: A non-return structure is provided on the side of the groove, and the storage rack can slide toward the box body and abut against and cross the non-return structure.

7. The circuit board drying device according to claim 6, characterized in that: The non-return structure includes a non-return plate and a spring. A mounting groove is provided on the side of the groove. The front of the non-return plate is hinged in the mounting groove up and down. The inner side surface of the rear of the non-return plate is connected to the side surface of the mounting groove by a spring. The outer side surface of the non-return plate gradually protrudes from the side surface of the groove in the direction toward the box body.

8. The circuit board drying device according to claim 1, characterized in that: The storage rack consists of a rectangular frame, a limiting frame and a supporting frame. The supporting parts are located at both ends of the rectangular frame. The limiting frame and the supporting frame are both U-shaped and connected to the lower end of the rectangular frame. The limiting frame and the supporting frame are perpendicular to each other on the horizontal plane. The limiting frame is located above the supporting frame. There are multiple limiting frames and they are arranged linearly.

9. The circuit board drying device according to claim 8, characterized in that: There are multiple support frames and they are arranged linearly.

10. The circuit board drying device according to claim 8, characterized in that: Handles are provided on both sides of the rectangular frame.

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