CN212910238U - A even tunnel furnace of heating for PCB circuit board toasts process - Google Patents
A even tunnel furnace of heating for PCB circuit board toasts process Download PDFInfo
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- CN212910238U CN212910238U CN202022248620.0U CN202022248620U CN212910238U CN 212910238 U CN212910238 U CN 212910238U CN 202022248620 U CN202022248620 U CN 202022248620U CN 212910238 U CN212910238 U CN 212910238U
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Abstract
The technology discloses a heating uniform tunnel furnace for PCB circuit board baking process, which comprises a preheating chamber, a high temperature baking chamber and a cooling chamber according to the circuit board conveying direction, a conveyer belt passes through the preheating chamber, the high temperature baking chamber and the cooling chamber, a high temperature heating pipe is arranged on the side wall of the high temperature baking chamber, the preheating chamber is provided with an air outlet, the top of the high temperature baking chamber is provided with an air outlet, the cooling chamber is provided with a cold air blower, a plurality of temperature sensors are arranged at the position close to the conveyer belt in the high temperature baking chamber at intervals along the PCB circuit board conveying direction, high temperature hot air ports are arranged beside the corresponding temperature sensors and are connected with a high temperature hot air generator, the high temperature hot air generator is connected with the high temperature hot air ports through a conveying pipe, a branch conveying pipe of each high temperature hot air port is provided with a, the temperature of each area of the conveyer belt is kept consistent, and the PCB is heated and baked more uniformly.
Description
The technical field is as follows:
the utility model relates to an even tunnel furnace of heating for PCB circuit board toasts process.
Background art:
in the production process of the PCB, the PCB needs to be baked, the PCB needs to be fed into a tunnel furnace during baking, and the PCB can be heated and heated when passing through the tunnel furnace. And the tunnel furnace is by the preheating chamber, high temperature toasts the room and the cooling chamber is constituteed, toast the PCB circuit board and go on in high temperature toasts the room, in order to produce high temperature, many heating tubes have been arranged at high temperature toasts the room, but because high temperature toasts the room and is a spatial structure, the distribution of heating tube is not too even, it is very inhomogeneous to lead to the temperature in the high temperature toasts the room, in order to improve the homogeneity of high temperature toasts the room temperature, there is the producer to formulate the air-blower in high temperature toasts the room, make inside high-temperature air flow, this kind of mode can only be improved a bit, but the heating to the PCB circuit board on the conveyer belt toasts the degree of consistency still not enough, the inside certain stress.
The utility model has the following contents:
the utility model aims at overcoming the shortcomings of the prior art and providing the uniform heating tunnel furnace for the PCB baking process.
The purpose of the invention of the utility model can be realized by the following technical scheme: the utility model provides an even tunnel furnace of heating for PCB circuit board toasts process, include the preheating chamber according to circuit board direction of delivery, high temperature toasts room and cooling chamber, the conveyer belt passes the preheating chamber, high temperature toasts room and cooling chamber, be provided with the high temperature heating tube on the lateral wall of high temperature toasting room, the preheating chamber is provided with the air outlet, high temperature toasts the room top and is provided with the air exit, the cooling chamber is provided with cold air blower, it is provided with a plurality of temperature sensor to be close to conveyer belt department along PCB circuit board direction of delivery interval in high temperature toasts the room, be provided with the high temperature hot-blast tuyere next door that corresponds, high temperature hot-blast generator is connected to the high temperature hot-blast generator, pass through duct connections high temperature hot-blast generator, all be provided with temperature formula flow control valve on the branch.
The preheating chamber is internally provided with a waste heat air outlet, the air outlet of the high-temperature baking chamber is connected with the waste heat air outlet through an air supply pipe, and the air supply pipe is provided with a waste heat fan and a flow regulating valve.
A low-temperature heating pipe is arranged in the preheating chamber.
After adopting the technical scheme, the beneficial effects of the utility model are that: set up a plurality of temperature sensor along direction of delivery through one section conveyer belt next door in the high temperature baking chamber, from knowing the temperature in the different regions of conveyer belt, combine the hot air volume of each high temperature hot-blast mouthful of temperature formula flow control valve control to carry out the heat and supply, thereby reach the temperature in each region of conveyer belt and all keep unanimous, make the heating of PCB circuit board toast more even, eliminate internal stress, improve and toast the effect.
Description of the drawings:
FIG. 1 is a structural view of the uniform heating tunnel furnace of the present invention;
fig. 2 is a partial enlarged structure view of the high temperature baking chamber of the uniform heating tunnel furnace of the present invention.
The specific implementation mode is as follows:
the present technology is further described below with reference to the accompanying drawings.
The uniform heating tunnel furnace for the PCB baking process of the embodiment comprises a preheating chamber 1, a high-temperature baking chamber 2 and a cooling chamber 3 according to the conveying direction of the circuit board, a conveying belt 4 passes through the preheating chamber 1, the high-temperature baking chamber 2 and the cooling chamber 3, a low-temperature heating pipe 5 is arranged in the preheating chamber 1, a high-temperature heating pipe 6 is arranged on the side wall of the high-temperature baking chamber 2, the preheating chamber 1 is provided with an air outlet 7, the top of the high-temperature baking chamber 2 is provided with an air outlet 8, the cooling chamber 3 is provided with a cold air fan 9, the cold air fan 9 blows air to the surface of the conveying belt 4, a plurality of temperature sensors 10 are arranged in the high-temperature baking chamber 2 at intervals along the conveying direction of the PCB circuit board near the conveying belt 4, high-temperature hot air inlets 11 are arranged beside the corresponding temperature sensors 10, high-temperature hot air generators 12 are arranged at the top, all be provided with temperature formula flow control valve 14 on each conveyer pipe 13, temperature sensor 10 connects temperature formula flow control valve 14, and the regional temperature that is responsible for by temperature sensor 10 of during operation gives corresponding temperature formula flow control valve 14 to self, if this regional temperature is too high, temperature formula flow control valve 14 can adjust and reduce and send to this regional hot-blast flow of high temperature, just improves hot-blast flow of high temperature on the contrary to reach a balanced value, make the PCB circuit board on the conveyer belt 4 be heated evenly. In order to reasonably utilize the waste heat of the high-temperature baking chamber 2, the exhaust outlet 8 of the high-temperature baking chamber 2 is connected with the waste heat outlet 18 through the blast pipe 15, and the blast pipe 15 is provided with a waste heat fan 16 and a flow regulating valve 17, so that the waste gas extracted from the high-temperature baking chamber 2 can be transferred to the preheating chamber 1 for utilization, and the electric energy is saved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. The invention is not limited to the embodiments described herein, but is capable of other embodiments with obvious modifications and variations, including those shown in the drawings and described herein. Therefore, the equivalent changes made according to the shape, structure and principle of the present invention should be covered in the protection scope of the present invention.
Claims (3)
1. The utility model provides a uniform tunnel furnace of heating for PCB circuit board toasts process includes preheating chamber, high temperature baking chamber and cooling chamber according to circuit board direction of delivery, and the conveyer belt passes preheating chamber, high temperature baking chamber and cooling chamber, is provided with the high temperature heating tube on the lateral wall of high temperature baking chamber, and the preheating chamber is provided with the air outlet, and high temperature baking chamber top is provided with the air exit, and the cooling chamber is provided with cold air blower, its characterized in that: a plurality of temperature sensors are arranged at the position, close to the conveying belt, in the high-temperature baking chamber along the conveying direction of the PCB at intervals, high-temperature hot air ports are arranged beside the corresponding temperature sensors and connected with a high-temperature hot air generator, the high-temperature hot air generator is connected with the high-temperature hot air ports through a conveying pipe, a branch conveying pipe of each high-temperature hot air port is provided with a temperature type flow control valve, and the temperature sensors are connected with the temperature type flow control valves.
2. The uniform heating tunnel furnace for the baking process of the PCB circuit board as claimed in claim 1, wherein: the preheating chamber is internally provided with a waste heat air outlet, the air outlet of the high-temperature baking chamber is connected with the waste heat air outlet through an air supply pipe, and the air supply pipe is provided with a waste heat fan and a flow regulating valve.
3. The uniform heating tunnel furnace for the baking process of the PCB circuit board as claimed in claim 1 or 2, wherein: a low-temperature heating pipe is arranged in the preheating chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022248620.0U CN212910238U (en) | 2020-10-10 | 2020-10-10 | A even tunnel furnace of heating for PCB circuit board toasts process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022248620.0U CN212910238U (en) | 2020-10-10 | 2020-10-10 | A even tunnel furnace of heating for PCB circuit board toasts process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212910238U true CN212910238U (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022248620.0U Active CN212910238U (en) | 2020-10-10 | 2020-10-10 | A even tunnel furnace of heating for PCB circuit board toasts process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212910238U (en) |
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2020
- 2020-10-10 CN CN202022248620.0U patent/CN212910238U/en active Active
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