Energy-saving PCB baking device and method

Abstract

This invention relates to the field of integrated circuit manufacturing technology, and more particularly to an energy-saving PCB board baking device and method. It includes a support platform, a baking oven fixedly connected to the upper side of the support platform, an exhaust shell fixedly connected and connected to the upper side of the baking oven, two swivel plates rotatably connected to the middle of the baking oven, and two sliding shells slidably connected to the lower side of the baking oven, each sliding shell having several air vents. The support platform is equipped with a first electric push rod, the telescopic end of which is fixedly connected to a fixed platform. This invention longitudinally divides the baking oven into an upper constant-temperature heat storage chamber and a lower openable loading and unloading chamber, with two swivel plates at the middle boundary. During loading and unloading, only the lower chamber is connected to the outside, while the upper chamber remains sealed to retain some heat. After loading and unloading, the two chambers are connected, and the high-temperature gas stored in the upper chamber rapidly equalizes the temperature of the lower chamber. This reduces heat waste and shortens the time required for the next heating cycle, thereby achieving energy savings.

Description

Technical Field

[0001] This invention relates to the field of integrated circuit manufacturing technology, and in particular to an energy-saving PCB board baking apparatus and method. Background Technology

[0002] Printed circuit boards (PCBs) are the core interconnect carriers of electronic devices and are widely used in communication equipment, consumer electronics, automotive electronics, industrial control, and aerospace. Their manufacturing process involves multiple steps, including pattern etching, solder mask coating, surface treatment, and final assembly. Before surface treatment and rework, PCBs need to be pre-baked to effectively remove moisture adsorbed / residual at the interface between the substrate and copper foil. If the baking is insufficient, PCBs are prone to "blowing," delamination, or voiding at the high temperature of reflow soldering, which seriously threatens product reliability and yield.

[0003] Existing PCB baking equipment generally adopts the traditional box oven structure. During the frequent loading and unloading of workpieces, the oven door needs to be opened and closed repeatedly, resulting in a large amount of high-temperature gas escaping and serious heat loss inside the oven. After each opening, it takes a long time and consumes a lot of energy to heat up to the required process temperature, which reduces baking efficiency, increases the energy cost per PCB board, and affects process stability. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides an energy-saving PCB board baking apparatus and method.

[0005] The technical solution of the present invention is as follows: an energy-saving PCB board baking device, comprising a support platform, a baking oven fixedly connected to the upper side of the support platform, an exhaust shell fixedly connected and connected to the upper side of the baking oven, two swing plates sealed and rotatably connected in the middle of the baking oven, two sliding shells sealed and slidably connected to the lower side of the baking oven, the sliding shells being provided with a plurality of air vents, two belt conveyors being provided below the baking oven, the two belt conveyors being used together to transport a first holding frame, a first electric push rod being provided under the support platform, a fixed platform being fixedly connected to the telescopic end of the first electric push rod, the fixed platform being used to support the first holding frame, and both sliding shells being provided with arc-shaped grooves for the telescopic part of the first electric push rod to slide;

[0006] The support platform is provided with several second electric push rods on its lower side. The telescopic ends of the several second electric push rods are all fixedly connected to a sliding frame. The sliding frame is fixedly connected to four spring telescopic rods. The telescopic ends of the spring telescopic rods are fixedly connected to a first rack frame. The baking oven is rotatably connected to four first gears. The first gears correspond one-to-one with the first rack frames. The sliding shell is fixedly connected to two second rack frames. The first gears mesh with the corresponding second rack frames and the corresponding first rack frames.

[0007] The fixed part of the spring telescopic rod is fixedly connected to a third rack frame, and the swing plate is fixedly connected to two second gears. The second gears correspond one-to-one with the third rack frame, and the second gears mesh with the corresponding third rack frame.

[0008] More preferably, the baking oven is fixedly connected to and connected to two arc-shaped shells, each arc-shaped shell corresponding to a swing plate, and a corrugated pipe is fixedly connected inside the arc-shaped shell.

[0009] More preferably, the arc-shaped shell and the bellows are fixedly connected to a fixing plate, the fixing plate is provided with two connecting holes, the connecting holes are used to connect the bellows and the arc-shaped shell, and each of the two connecting holes is provided with a one-way valve, the two one-way valves having opposite functions.

[0010] More preferably, the swing plate is fixedly connected to an L-shaped plate, the L-shaped plate is fixedly connected to an arc-shaped rod that is slidably connected to the corresponding arc-shaped shell, the arc-shaped rod is fixedly connected to the corresponding bellows, and a first tension spring is provided between the side of the bellows away from the fixed plate and the arc-shaped shell.

[0011] More preferably, the angle of inclination relative to the vertical direction of all the air vents on the same sliding shell increases sequentially from the side closest to the oven to the other side.

[0012] More preferably, the baking oven is equipped with a drying element, and the swing plate is used to shield the drying element.

[0013] More preferably, the first holding frame is hinged with two symmetrically distributed sets of first hinge rods, each set of first hinge rods consists of two pairs of first hinge rods, and a second tension spring is provided between the two first hinge rods in the middle of the same set of first hinge rods. The upper sides of two adjacent pairs of first hinge rods in different sets are hinged to a second holding frame. Each of the two second holding frames is hinged with two second hinge rods. The upper sides of two adjacent second hinge rods on different second holding frames are hinged to a hinge shell, which is used to abut the lower side of the exhaust shell. The upper and lower parts of the baking oven are both chambers with an isosceles trapezoidal cross section.

[0014] An energy-saving PCB baking method, based on an energy-saving PCB baking device, has the following specific structure:

[0015] The first step is to establish connections between the sliding shell and the exhaust shell and the external hot air supply equipment and the external exhaust equipment, respectively.

[0016] The second step involves using two belt conveyors to transport the first container and its PCB board to the bottom of the baking oven.

[0017] The third step involves extending the telescopic parts of the first and second electric push rods to complete the conveying of the first container frame, as well as the opening of the two swing plates and the fitting of the two sliding shells.

[0018] The fourth step involves an external hot air supply device that delivers hot air into the sliding shell. The hot air is then ejected from the sliding shell through the air outlet. At the same time, an external exhaust device extracts the gas and moisture from the sliding shell through the exhaust shell, and the hot air from the oven bakes the PCB board.

[0019] In the fifth step, after the PCB board is baked, the first electric push rod and the extension part of the second electric push rod are reset in succession, completing the conveying of the first holding frame after baking, as well as the closing of the two swing plates, the separation of the two sliding shells, and the extraction and storage of hot air from the baking oven by the corrugated pipe.

[0020] Compared with the prior art, the present invention has the following advantages: The present invention divides the baking oven longitudinally into an upper constant temperature heat storage chamber and a lower openable loading and unloading chamber, and sets two swing plates at the middle boundary. During loading and unloading, only the lower chamber is connected to the outside, while the upper chamber is sealed throughout to retain some heat. After loading and unloading, the two chambers are connected, and the high temperature gas stored in the upper chamber is used to quickly equalize the temperature of the lower chamber. This reduces heat source waste and shortens the time required for the next heating, thereby achieving energy saving.

[0021] The first holding frame is conveyed by a belt conveyor, and the extension of the first and second electric push rod telescopic parts completes key processes such as automatic opening and closing, sealing, positioning and cavity connection. The entire process is completed without human intervention.

[0022] By stretching the corrugated pipe, hot air is extracted from the oven, reducing heat loss. Then, by compressing the oven, the hot air is reintroduced, shortening the time required for the PCB board to reach the rated temperature. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the baking oven and exhaust shell of the present invention;

[0026] Figure 4 This is a three-dimensional structural cross-sectional view of the baking oven and exhaust shell of the present invention;

[0027] Figure 5 This is a three-dimensional structural diagram showing the positional relationship of the drying components of the present invention;

[0028] Figure 6 This is a three-dimensional structural cross-sectional view of the arc-shaped shell of the present invention;

[0029] Figure 7 This is a three-dimensional structural diagram showing the positional relationship of the fixing plates in this invention;

[0030] Figure 8 This is a three-dimensional structural diagram showing the positional relationship between the first hinge rod and the second holding frame of the present invention.

[0031] Figure 9 This is a bottom view of the three-dimensional structure of the first holding frame of the present invention.

[0032] In the diagram: 1-Support platform, 2-Baking oven, 3-Exhaust shell, 4-Swing plate, 401-Drying component, 5-Sliding shell, 501-Air outlet, 6-Belt conveyor, 7-First holding frame, 701-First hinge rod, 702-Second holding frame, 703-Second hinge rod, 704-Hinge shell, 8-First electric push rod, 9-Fixed platform, 10-Second electric push rod, 11-Sliding frame, 12-Spring telescopic rod, 13-First rack frame, 14-First gear, 15-Second rack frame, 16-Third rack frame, 17-Second gear, 21-Arc-shaped shell, 2101-Fixed plate, 2102-Connecting hole, 22-Bellwall, 23-L-shaped plate, 24-Arc-shaped rod. Detailed Implementation

[0033] The technical solution will be further described below with reference to specific embodiments. It should be noted that the terms "up" and "down," etc., used herein refer only to the position of the illustrated structure in the corresponding drawings. The component numbers used herein, such as "first," "second," etc., are merely for distinguishing the described objects and have no sequential or technical meaning. Furthermore, the term "connection," unless otherwise specified, includes both direct and indirect connections.

[0034] To address the problems of existing PCB baking equipment, such as the large amount of high-temperature gas overflowing and severe heat loss from the oven due to repeated opening and closing of the oven door during frequent workpiece loading and unloading, as well as the long time and high energy consumption required to reheat to the required process temperature, this invention proposes the following solution to the above problems.

[0035] according to Figure 1 From the perspective of the support platform 1, the right side is the operating platform, which is electrically connected to all the electrical components mentioned in this invention.

[0036] Example 1: An energy-saving PCB board baking device, such as Figures 1-6As shown, the oven includes a support platform 1, an oven 2 fixedly connected to the upper side of the support platform 1, an exhaust shell 3 fixedly connected and connected to the upper side of the oven 2, two swing plates 4 sealed and rotatably connected in the middle of the oven 2, two sliding shells 5 sealed and slidably connected to the lower side of the oven 2, the sliding shells 5 are provided with several air vents 501, two belt conveyors 6 are provided below the oven 2, the two belt conveyors 6 are used together to transport the first holding frame 7, a first electric push rod 8 is provided under the support platform 1, a fixed platform 9 is fixedly connected to the telescopic end of the first electric push rod 8, the fixed platform 9 is used to support the first holding frame 7, both sliding shells 5 are provided with arc-shaped grooves for the telescopic part of the first electric push rod 8 to slide, all the air vents 501 on the same sliding shell 5 have an increasing angle of inclination relative to the vertical direction from one side closer to the oven 2 to the other side, the upper and lower parts of the oven 2 are both chambers with an isosceles trapezoidal cross section.

[0037] In the above scheme, when the two swing plates 4 are parallel to the horizontal line, they are in contact. When the PCB board needs to be baked, the first electric push rod 8 sends the first holding frame 7 into the baking oven 2, and at this time the opposing sides of the two sliding shells 5 are already in contact. When the PCB board needs to be baked, the sliding shell 5 is connected to the external hot air supply device. Before baking the PCB board, the exhaust shell 3 is connected to the external exhaust device. The lower side of the first holding frame 7 is provided with a cross-shaped groove. When the fixed platform 9 is in contact with the cross-shaped groove... The fixed platform 9 stably lifts the first holding frame 7. The outer edge of the upper side of the fixed platform 9 is provided with an inclined surface. The edge of the cross-shaped groove on the lower side of the first holding frame 7 that contacts the upper side of the fixed platform 9 is provided with an inclined surface to guide the fixed platform 9 to fit with the first holding frame 7. The air vent 501 on the left sliding shell 5 is inclined to the left from bottom to top, and the air vent 501 on the right sliding shell 5 is inclined to the right from bottom to top to adapt to the shape inside the baking oven 2. Two belt conveyors 6 are used to support the two sides of the first holding frame 7 for transportation.

[0038] like Figures 3-6 As shown, a number of second electric push rods 10 are provided on the lower side of the support platform 1. The telescopic ends of the number of second electric push rods 10 are all fixed to a sliding frame 11. The sliding frame 11 is fixed to four spring telescopic rods 12. The telescopic ends of the spring telescopic rods 12 are fixed to a first rack frame 13. The baking oven 2 is rotatably connected to four first gears 14. The first gears 14 correspond one-to-one with the first rack frames 13. The sliding shell 5 is fixed to two second rack frames 15. The first gears 14 mesh with the corresponding second rack frames 15 and the corresponding first rack frames 13. The fixed part of the spring telescopic rods 12 is fixed to a third rack frame 16. The swing plate 4 is fixed to two second gears 17. The second gears 17 correspond one-to-one with the third rack frames 16. The second gears 17 mesh with the corresponding third rack frames 16.

[0039] In the above scheme, the thickness of the first gear 14 is greater than the sum of the thickness of the first rack frame 13 and the second rack frame 15, and the first rack frame 13 and the second rack frame 15 are misaligned.

[0040] like Figures 5-7 As shown, the baking oven 2 is fixedly connected to and connected to two arc-shaped shells 21, and the arc-shaped shells 21 correspond one-to-one with the swing plate 4. A corrugated pipe 22 is fixedly connected inside the arc-shaped shell 21.

[0041] In the above scheme, when the bellows 22 contracts, it sends the gas inside into the baking oven 2; conversely, when the bellows 22 expands, it extracts the hot air from the lower part of the baking oven 2 to reduce the waste of heat source inside the baking oven 2, thereby achieving the effect of energy saving. The bellows 22 is a bellows structure similar to that inside an accordion.

[0042] like Figures 5-7 As shown, the arc-shaped shell 21 and the bellows 22 are fixedly connected to a fixing plate 2101. The fixing plate 2101 is provided with two connecting holes 2102. The connecting holes 2102 are used to connect the bellows 22 and the arc-shaped shell 21. One-way valves are provided in both connecting holes 2102. The two one-way valves have opposite functions.

[0043] In the above scheme, during the process of the arc-shaped shell 21 and the bellows 22 drawing hot air from the oven 2, the one-way valve in one of the connecting holes 2102 is in the open state, while the one-way valve in the other connecting hole 2102 is in the closed state.

[0044] like Figures 5-7 As shown, the swing plate 4 is fixedly connected to an L-shaped plate 23, the L-shaped plate 23 is fixedly connected to an arc-shaped rod 24 that is slidably connected to the corresponding arc-shaped shell 21, the arc-shaped rod 24 is fixedly connected to the corresponding bellows 22, and a first tension spring is provided between the side of the bellows 22 away from the fixed plate 2101 and the arc-shaped shell 21.

[0045] In the above scheme, the arc rod 24 is fixed to the upper side of the bellows 22. When the arc rod 24 is pulled by the L-shaped plate 23, the arc rod 24 pulls the upper side of the bellows 22, causing the bellows 22 to deform and extract the gas in the baking oven 2, so as to achieve the effect of extracting hot gas and reducing heat loss. A dehumidifying bag for removing moisture from the gas can be installed inside the bellows 22. The center of the circle where the arc rod 24 is located is located on the rotation axis of the swing plate 4, and the center of the circle where the arc shell 21 is located is located on the rotation axis of the swing plate 4.

[0046] like Figure 5 and Figure 6 As shown, a drying component 401 is provided inside the baking oven 2, and a swing plate 4 is used to shield the drying component 401.

[0047] In the above scheme, when both swing plates 4 are tilted relative to the horizontal plane and are in contact with the upper side of the baking oven 2, the swing plates 4 will block the drying component 401. This means that the drying component 401 is not used when baking the PCB board. The drying component 401 is an existing drying box containing drying particles.

[0048] like Figure 3 , Figure 8 and Figure 9 As shown, the first holding frame 7 is hinged with two symmetrically distributed sets of first hinge rods 701. Each set of first hinge rods 701 consists of two pairs of first hinge rods 701. A second tension spring is provided between the two first hinge rods 701 in the middle of the same set of first hinge rods 701. The upper sides of two adjacent pairs of first hinge rods 701 in different sets are hinged together to a second holding frame 702. Each of the two second holding frames 702 is hinged to two second hinge rods 703. The upper sides of two adjacent second hinge rods 703 on different second holding frames 702 are hinged together to a hinge shell 704. The hinge shell 704 is used to abut the lower side of the exhaust shell 3. The upper and lower parts of the baking oven 2 are both chambers with an isosceles trapezoidal cross section.

[0049] In the above scheme, the second holding frame 702 is connected to the first holding frame 7 by the first hinge rod 701. While increasing the PCB board holding capacity, the first holding frame 7 and the two second holding frames 702 are staggered, so that the moisture generated after the PCB board in the first holding frame 7 is baked will not affect the baking of the PCB board in the second holding frame 702. This is conducive to the discharge of moisture and reduces the probability of moisture re-adhering to the PCB board. In the same group of first hinge rods 701, the pair of first hinge rods 701 on the left side tilts to the left from bottom to top, and the other pair of first hinge rods 701 tilts to the right from bottom to top.

[0050] Working principle: When PCB boards need to be baked, the user first places the PCB boards to be processed in the first holding frame 7 and the second holding frame 702. Then, the first holding frame 7 and the second holding frame 702 are transported to the bottom of the baking oven 2 by two belt conveyors 6. Then, the two belt conveyors 6 stop working. At this time, the telescopic part of the first electric push rod 8 drives the fixed platform 9 to move upward. After the fixed platform 9 moves upward and inserts into the cross-shaped groove on the lower side of the first holding frame 7, the upward movement of the fixed platform 9 drives the first holding frame 7, the first hinge rod 701 and the second... The holding frame 702 and its components move synchronously into the baking oven 2 along with the PCB board to be baked. At the same time, the telescopic parts of all the second electric push rods 10 jointly drive the sliding frame 11 to move upward. The sliding frame 11 drives all the first rack frames 13 and the third rack frames 16 to move synchronously through all the spring telescopic rods 12. During the upward movement of the first rack frame 13, the first gear 14 is driven to rotate, causing the first gear 14 to drive the second rack frame 15 to move. The second rack frame 15 then drives the sliding shell 5 to move. Through the movement of the above components, the two sliding shells 5 are brought closer together.

[0051] When the first holding frame 7, the first hinge rod 701, the second holding frame 702, and their components, along with the PCB board to be baked, all move into the baking oven 2 and are positioned between the two swing plates 4 and the two sliding shells 5, the two sliding shells 5 come into contact (after the two sliding shells 5 come into contact, the telescopic part of the first electric push rod 8 is clamped between them). At this time, the first rack frame 13 moves to its limit position and the third rack frame 16 has meshed with the second gear 17 (at this time, the lower side of the first rack frame 13 abuts against the first gear 14, causing the first gear 14 to stop rotating and the first rack frame 13 to stop moving). The sliding frame 11 continues to move upward, and the telescopic part of the spring telescopic rod 12 is compressed and retracts. As the spring telescopic rod 12 is compressed, the fixed part of the spring telescopic rod 12 continues to move along with the sliding frame 11. During the movement of the fixed part of the spring telescopic rod 12, the third rack frame 16 moves synchronously. During the movement of the third rack frame 16, the second gear 17 rotates. The second gear 17 then drives the swing plate 4 to swing inside the baking oven 2. (During the swing of the swing plate 4, the arc rod 24 moves inside the arc shell 21 through the L-shaped plate 23. During the movement of the arc rod 24, the bellows 22 is squeezed (when the bellows 22 is squeezed, it pulls the first tension spring), causing the gas inside the bellows 22 to open the one-way valve in one of the connecting holes 2102 and enter the baking oven 2.)

[0052] The first holding frame 7, the first hinge rod 701, the second holding frame 702, and their components move until the hinge shell 704 abuts against the exhaust shell 3. The components continue to move, but at this time, the hinge shell 704 is blocked by the exhaust shell 3, causing the lower sides of the two second hinge rods 703 to swing outward. During the outward swing of the lower sides of the two second hinge rods 703, the two second holding frames 702 drive the first hinge rods 701 to swing outward (the first hinge rods 701 stretch the adjacent second tension springs during the swing). During the swing of the second holding frame 702, the connection between the first hinge rods 701 and the first holding frame 7 ensures that the second holding frame 702 is stably displaced and the PCB board inside it does not tilt.

[0053] Once the two swing plates 4 have swung until their upper sides are in contact with the inside of the baking oven 2, the first holding frame 7, the first hinge rod 701, the second holding frame 702, and their components, along with the PCB board to be baked, have moved to the center of the baking oven 2. At this point, the two second holding frames 702 are in an open state. Subsequently, the first electric push rod 8 and the second electric push rod 10 both stop working, and the baking of the PCB board can begin. The baking process is as follows:

[0054] An external hot air supply device sends hot air into the sliding shell 5, and the hot air is ejected from the sliding shell 5 through the air outlet 501. At the same time, an external exhaust device extracts the gas and moisture from the sliding shell 5 through the exhaust shell 3. After the PCB board is baked by the hot air in the baking oven 2 for a period of time (this time is set according to the actual situation), the external exhaust device and the external hot air supply device are turned off. At this time, the baking oven 2 remains sealed. Then, the telescopic parts of the first electric push rod 8 and the second electric push rod 10 are both retracted. When the telescopic part of the first electric push rod 8 retracts, it drives the first holding frame 7 and its parts to move downward. Under the action of the second tension spring, the first hinge rod 701 causes the two second holding frames 702 to swing back to their original position through the first hinge rod 701. At the same time, the second holding frames 702 drive the second hinge rod 703 to swing back to their original position.

[0055] When the first holding frame 7 and its aforementioned parts are presented Figure 8After reaching the desired state, during the downward movement of the first holding frame 7, the hinge shell 704 disengages from the exhaust shell 3. During the movement of the aforementioned parts, the sliding frame 11 drives all the spring telescopic rods 12 to move downward synchronously. At this time, all the third rack frames 16 move downward first. During the movement of the third rack frames 16, the second gear 17 drives the swing plate 4 to swing, causing the swing plate 4 to swing towards the center of the baking oven 2. During the swing of the swing plate 4, the arc rod 24 pulls the upper part of the bellows 22 (at this time, the first tension spring retracts and resets). After the bellows 22 is pulled, it deforms, thereby generating a negative pressure suction force. Through this force, the one-way valve in the other connecting hole 2102 is opened, so that the hot air in the baking oven 2 enters the bellows 22 through the connecting hole 2102, thereby achieving the effect of extracting hot air and pre-storing hot air while actively extracting hot air.

[0056] When the first holding frame 7 and its above-mentioned parts are positioned between the two swing plates 4 and the two sliding shells 5, the two swing plates 4 are in contact (during the swinging process, the swing plates 4 expose the drying component 401 to the oven 2, achieving the effect of removing moisture from the hot air), and separate the upper and lower parts of the oven 2 to retain heat. At this time, the telescopic parts of all spring telescopic rods 12 are reset, and the sliding frame 11 moves downward by pulling the first rack frame 13 downward through all the spring telescopic rods 12. The first rack frame 13 drives the first gear 14 to reverse, and the reverse of the first gear 14 causes the second rack frame 15 to drive the sliding shell 5 to move in the opposite direction. At the same time, the first holding frame 7 and its parts move downward.

[0057] After the telescopic parts of the first electric push rod 8 and the second electric push rod 10 return to the state shown in the attached drawing, the first holding frame 7 and its parts have fallen onto the two belt conveyors 6, and the fixed platform 9 is no longer in contact with the first holding frame 7. The two sliding shells 5 have slid to the state shown in the attached drawing. At that time, the first holding frame 7 and its parts can continue to be transported by the two belt conveyors 6. When the PCB board needs to be baked again, the above actions can be repeated. However, the difference is that when the bellows 22 is compressed, it sprays out hot air, which can further shorten the time required for the PCB board to be placed at the rated temperature (the state mentioned above in the attached drawing can be referred to). Figures 3-6 ).

[0058] Example 2: Based on Example 1, a baking method for an energy-saving PCB board, such as... Figures 1-9 As shown, based on an energy-saving PCB board baking device, the specific steps are as follows:

[0059] The first step is to establish connections between the sliding shell 5 and the exhaust shell 3 and the external hot air supply device and the external exhaust device, respectively.

[0060] The second step involves using two belt conveyors 6 to transport the first holding frame 7 and the PCB board inside it directly below the baking oven 2.

[0061] The third step involves extending the telescopic parts of the first electric push rod 8 and the second electric push rod 10 to complete the conveying of the first holding frame 7, as well as the opening of the two swing plates 4 and the fitting of the two sliding shells 5.

[0062] The fourth step involves an external hot air supply device sending hot air into the sliding shell 5. The hot air is then ejected from the sliding shell 5 through the air outlet 501. At the same time, an external exhaust device extracts the gas and moisture from the sliding shell 5 through the exhaust shell 3, and the hot air from the baking oven 2 bakes the PCB board.

[0063] In the fifth step, after the PCB board is baked, the extension parts of the first electric push rod 8 and the second electric push rod 10 are successively reset, completing the conveying of the first holding frame 7 after baking, as well as the closing of the two swing plates 4, the separation of the two sliding shells 5, and the extraction and storage of hot air from the baking oven 2 by the bellows 22.

[0064] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. An energy-saving PCB board baking device, characterized in that, The oven includes a support platform (1), an oven (2) is fixedly connected to the upper side of the support platform (1), an exhaust shell (3) is fixedly connected to and connected to the upper side of the oven (2), two swing plates (4) are rotatably connected to the middle of the oven (2), two sliding shells (5) are slidably connected to the lower side of the oven (2), the sliding shells (5) are provided with a number of air vents (501), two belt conveyors (6) are provided below the oven (2), the two belt conveyors (6) are used together to transport the first container frame (7), a first electric push rod (8) is provided on the lower side of the support platform (1), a fixed platform (9) is fixedly connected to the telescopic end of the first electric push rod (8), the fixed platform (9) is used to support the first container frame (7), and both sliding shells (5) are provided with arc-shaped grooves for the telescopic part of the first electric push rod (8) to slide. The support platform (1) is provided with several second electric push rods (10) on its lower side. The telescopic ends of several second electric push rods (10) are fixedly connected to a sliding frame (11). The sliding frame (11) is fixedly connected to four spring telescopic rods (12). The telescopic ends of the spring telescopic rods (12) are fixedly connected to a first rack frame (13). The baking oven (2) is rotatably connected to four first gears (14). The first gears (14) correspond one-to-one with the first rack frames (13). The sliding shell (5) is fixedly connected to two second rack frames (15). The first gears (14) mesh with the corresponding second rack frames (15) and the corresponding first rack frames (13). The fixed part of the spring telescopic rod (12) is fixedly connected to the third rack frame (16), and the swing plate (4) is fixedly connected to two second gears (17). The second gears (17) correspond one-to-one with the third rack frame (16), and the second gears (17) mesh with the corresponding third rack frame (16).

2. The energy-saving PCB board baking device according to claim 1, characterized in that, The baking oven (2) is fixedly connected to and connected to two arc-shaped shells (21), and the arc-shaped shells (21) correspond one-to-one with the swing plate (4). A corrugated pipe (22) is fixedly connected inside the arc-shaped shell (21).

3. The energy-saving PCB board baking device according to claim 2, characterized in that, The arc-shaped shell (21) and the bellows (22) are fixed together by a fixing plate (2101). The fixing plate (2101) is provided with two connecting holes (2102). The connecting holes (2102) are used to connect the bellows (22) and the arc-shaped shell (21). One-way valves are provided in both connecting holes (2102), and the two one-way valves have opposite functions.

4. The energy-saving PCB board baking device according to claim 3, characterized in that, The swing plate (4) is fixedly connected to an L-shaped plate (23), and the L-shaped plate (23) is fixedly connected to an arc-shaped rod (24) that is slidably connected to the corresponding arc-shaped shell (21). The arc-shaped rod (24) is fixedly connected to the corresponding bellows (22), and a first tension spring is provided between the side of the bellows (22) away from the fixed plate (2101) and the arc-shaped shell (21).

5. The energy-saving PCB board baking device according to claim 4, characterized in that, All the air vents (501) on the same sliding shell (5) have an increasing angle of inclination relative to the vertical direction from one side closer to the oven (2) to the other side.

6. The energy-saving PCB board baking device according to claim 5, characterized in that, The baking oven (2) is equipped with a drying component (401), and the swing plate (4) is used to shield the drying component (401).

7. The energy-saving PCB board baking device according to claim 6, characterized in that, The first holding frame (7) is hinged with two sets of symmetrically distributed first hinge rods (701). Each set of first hinge rods (701) consists of two pairs of first hinge rods (701). A second tension spring is provided between the two first hinge rods (701) in the middle of the same set of first hinge rods (701). The upper sides of two adjacent pairs of first hinge rods (701) in different sets are hinged together with a second holding frame (702). Each of the two second holding frames (702) is hinged with two second hinge rods (703). The upper sides of two adjacent second hinge rods (703) on different second holding frames (702) are hinged together with a hinge shell (704). The hinge shell (704) is used to abut against the lower side of the exhaust shell (3). The upper and lower parts of the baking oven (2) are both chambers with an isosceles trapezoidal cross section.

8. A method for baking an energy-saving PCB board, comprising an energy-saving PCB board baking apparatus according to claim 7, characterized in that, The specific steps are as follows: First, establish connections between the sliding shell (5) and the exhaust shell (3) and the external hot air supply equipment and the external exhaust equipment, respectively; The second step involves using two belt conveyors (6) to transport the first container (7) and its PCB board to the bottom of the baking oven (2). The third step involves extending the telescopic parts of the first electric push rod (8) and the second electric push rod (10) to complete the conveying of the first holding frame (7), as well as the opening of the two swing plates (4) and the fitting of the two sliding shells (5); The fourth step is to send hot air into the sliding shell (5) through the external hot air supply device. The hot air is sprayed out from the sliding shell (5) through the air outlet (501). At the same time, the external exhaust device extracts the gas and moisture in the sliding shell (5) through the exhaust shell (3). The hot air in the baking oven (2) bakes the PCB board. In the fifth step, after the PCB board is baked, the extension parts of the first electric push rod (8) and the second electric push rod (10) are successively reset, completing the conveying of the first holding frame (7) after baking, as well as the closing of the two swing plates (4), the separation of the two sliding shells (5), and the extraction and storage of hot air from the baking oven (2) by the bellows (22).

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