Polyimide film heat treatment furnace

Abstract

The utility model relates to the technical field of polyimide film heat treatment furnaces, and discloses a polyimide film heat treatment furnace which comprises a placing frame, a heat treatment furnace shell is arranged at the top of the placing frame, a plurality of layers of heat insulation assemblies are installed in the heat treatment furnace shell, and an exhaust pipe is arranged at the top of the heat treatment furnace shell. A quick release assembly is mounted in the exhaust pipe, a filter pipe is arranged at the top of the exhaust pipe, a clamping block is fixedly connected to the outer side of the filter pipe, and a transmission assembly is mounted at the top of the placement frame; the multi-layer heat insulation assembly comprises a protection layer and a heat insulation layer, and the protection layer and the heat insulation layer are both arranged on the inner side of the heat treatment furnace shell. According to the utility model, under the mutual cooperation of the protection layer, the heat insulation layer and the reflection layer, high-temperature-resistant protection is provided, heat conduction is reduced, and heat radiation loss is reduced, so that the overall structure can effectively reduce heat loss of the furnace body, improve the energy utilization rate and reduce the operation cost.

Description

Technical Field

[0001] The utility model relates to the technical field of polyimide film heat treatment furnaces, in particular to a polyimide film heat treatment furnace. Background Art

[0002] Polyimide film is a high-performance film material made from polyimide resin. It exhibits excellent high-temperature resistance (capable of operating at temperatures above 250°C for extended periods), good electrical insulation properties, mechanical strength, radiation resistance, chemical corrosion resistance, and excellent dimensional stability and fatigue resistance. It is widely used in the electronics, electrical, and aerospace industries, including motor insulation, flexible circuit substrates, and high-temperature coatings.

[0003] The polyimide film heat treatment furnace is a device specially used for high-temperature treatment of polyimide film. It is used to complete processes such as imidization, curing and performance optimization of the film. It is mainly composed of a furnace body, a heating system, a control system, a transmission system and an exhaust filtration system. The polyimide film is heated to a specified temperature in the furnace through the heating system and heat-treated in an inert gas protection environment to complete the imidization reaction of the film from the precursor (such as polyamic acid) to polyimide.

[0004] The existing polyimide film heat treatment furnace can achieve efficient and accurate heat treatment of polyimide film. However, during long-term high-temperature operation, the heat treatment furnace of polyimide film loses a large amount of heat through heat conduction, radiation and convection due to the single insulation structure of the furnace body, resulting in a significant increase in energy consumption. Therefore, a polyimide film heat treatment furnace is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a polyimide film heat treatment furnace, which aims to improve the problems in the prior art of single furnace insulation structure, large amount of heat loss and significant increase in energy consumption.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A polyimide film heat treatment furnace comprises a placement rack, a heat treatment furnace shell is provided on the top of the placement rack, a multi-layer heat insulation assembly is installed inside the heat treatment furnace shell, an exhaust pipe is provided on the top of the heat treatment furnace shell, a quick-release assembly is installed inside the exhaust pipe, a filter tube is provided on the top of the exhaust pipe, a block is fixedly connected to the outside of the filter tube, and a transmission assembly is installed on the top of the placement rack; the multi-layer heat insulation assembly comprises a protective layer and a heat insulation layer, the protective layer and the heat insulation layer are both provided on the inner side of the heat treatment furnace shell, the heat insulation layer is provided between the heat treatment furnace shell and the protective layer, the protective layer is a ceramic fiber material, and the heat insulation layer is an aerogel heat insulation felt;

[0008] As a further description of the above technical solution:

[0009] The multi-layer heat insulation assembly includes a protective layer and a reflective layer, wherein the protective layer and the reflective layer are both arranged on the inner side of the heat treatment furnace shell, and the reflective layer is arranged between the heat treatment furnace shell and the protective layer, the protective layer is made of ceramic fiber material, and the reflective layer is coated with aluminum foil;

[0010] As a further description of the above technical solution:

[0011] The multi-layer thermal insulation assembly includes a protective layer, a thermal insulation layer, and a reflective layer. The protective layer, the thermal insulation layer, and the reflective layer are all arranged on the inner side of the heat treatment furnace shell. The thermal insulation layer is arranged between the heat treatment furnace shell and the protective layer. The reflective layer is arranged between the heat treatment furnace shell and the thermal insulation layer. The protective layer is made of ceramic fiber material, the thermal insulation layer is made of aerogel thermal insulation felt, and the reflective layer is coated with aluminum foil.

[0012] As a further description of the above technical solution:

[0013] The quick-release assembly includes a connecting plate, the connecting plate is fixedly connected to the inside of the exhaust pipe, the inside of the exhaust pipe is fixedly connected to a fixing plate, a spring telescopic rod is installed on the top of the fixing plate, the top of the spring telescopic rod is fixedly connected to a baffle, and the connecting plate is arranged on the top of the baffle;

[0014] As a further description of the above technical solution:

[0015] A sliding groove and a clamping groove are provided inside the connecting plate, the clamping block is slidably connected to the inside of the sliding groove, and the clamping block and the clamping groove are clamped with each other;

[0016] As a further description of the above technical solution:

[0017] A protective plate is fixedly connected to the bottom of the filter tube, and the protective plate is arranged on the inner side of the connecting plate, the baffle and the fixed plate;

[0018] As a further description of the above technical solution:

[0019] The transmission assembly includes an unwinding roller, the unwinding roller is rotatably connected to the top of the placement rack, the top of the placement rack is rotatably connected to a winding roller, the side of the placement rack is fixedly connected to a motor, and one end of the winding roller is fixedly connected to the output end of the motor;

[0020] As a further description of the above technical solution:

[0021] A control panel is installed on the side of the placement rack.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the present invention, the low thermal conductivity of the protective layer and the heat-insulating layer significantly blocks heat loss, and the reflective layer reduces heat radiation loss, so that internal heat is effectively retained, ensuring efficient and stable operation of the heat treatment furnace and meeting the reliability requirements of industrial use.

[0024] 2. In the present invention, with the cooperation of the connecting plate, the fixing plate, the spring telescopic rod and the baffle, the exhaust filter tube can be quickly disassembled for maintenance and replacement, ensuring its performance in filtering volatile organic compounds and particulate matter generated during the heat treatment process, so as to ensure that the exhaust gas meets environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of the polyimide film heat treatment furnace proposed by the present invention;

[0026] Figure 2 This is a cross-sectional schematic diagram of the heat treatment furnace shell of the polyimide film heat treatment furnace proposed in the present invention;

[0027] Figure 3 This is a structural schematic diagram of the connecting plate of the polyimide film heat treatment furnace proposed by the present invention;

[0028] Figure 4 This is a schematic structural diagram of the motor of the polyimide film heat treatment furnace proposed in the present invention.

[0029] Legend:

[0030] 1. Placement rack; 2. Heat treatment furnace shell; 3. Multi-layer insulation assembly; 4. Exhaust pipe; 5. Quick-release assembly; 6. Filter tube; 7. Transmission assembly; 8. Protective layer; 9. Insulation layer; 10. Reflective layer; 11. Connecting plate; 12. Fixing plate; 13. Spring telescopic rod; 14. Baffle; 15. Block; 16. Slide; 17. Slot; 18. Protective plate; 19. Unwinding roller; 20. Rewinding roller; 21. Motor; 22. Control panel. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1:

[0033] Reference Figure 1and Figure 2 , the utility model provides an embodiment: a polyimide film heat treatment furnace, including a placement rack 1, a heat treatment furnace shell 2 is provided on the top of the placement rack 1, a multi-layer heat insulation component 3 is installed inside the heat treatment furnace shell 2, an exhaust pipe 4 is provided on the top of the heat treatment furnace shell 2, a quick-release component 5 is installed inside the exhaust pipe 4, a filter tube 6 is provided on the top of the exhaust pipe 4, a card block 15 is fixedly connected to the outside of the filter tube 6, and a transmission component 7 is installed on the top of the placement rack 1; the multi-layer heat insulation component 3 includes a protective layer 8 and a heat insulation layer 9, the protective layer 8 and the heat insulation layer 9 are both arranged on the inner side of the heat treatment furnace shell 2, and the heat insulation layer 9 is arranged between the heat treatment furnace shell 2 and the protective layer 8, the protective layer 8 is a ceramic fiber material, the ceramic fiber material has high temperature resistance, low thermal conductivity, and light weight, the heat insulation layer 9 is an aerogel insulation felt, which has extremely low thermal conductivity and excellent heat insulation performance. The protective layer 8 is arranged on its outer layer to protect the heat insulation layer 9.

[0034] Reference Figure 1 and Figure 3 The quick-release assembly 5 includes a connecting plate 11, which is fixedly connected to the interior of the exhaust pipe 4. A fixed plate 12 is fixedly connected to the interior of the exhaust pipe 4. A spring-loaded telescopic rod 13 is installed on the top of the fixed plate 12. A baffle 14 is fixedly connected to the top of the spring-loaded telescopic rod 13. The connecting plate 11 is arranged on top of the baffle 14. The pressure generated by the fixed plate 12 and the spring-loaded telescopic rod 13 causes the baffle 14 to be forced to move toward the connecting plate 11. A sliding groove 16 and a clamping groove 17 are provided inside the connecting plate 11. A clamping block 15 is slidably connected to the interior of the sliding groove 16. The clamping block 15 and the clamping groove 17 are mutually engaged, and the clamping block 15 of the filter tube 6 enters the connecting plate 11 through the sliding groove 16. A protective plate 18 is fixedly connected to the bottom of the filter tube 6. The protective plate 18 is arranged on the inner side of the connecting plate 11, the baffle 14, and the fixed plate 12. The installation of the protective plate 18 prevents the gas in the exhaust pipe 4 from corroding the quick-release assembly 5.

[0035] Reference Figure 1 and Figure 4 The transmission assembly 7 includes an unwinding roller 19, which is rotatably connected to the top of the placement rack 1. The top of the placement rack 1 is also rotatably connected to a take-up roller 20. A motor 21 is fixedly connected to the side of the placement rack 1. One end of the take-up roller 20 is fixedly connected to the output terminal of the motor 21. The motor 21 drives the take-up roller 20 to rotate, moving the polyimide film on the unwinding roller 19 within the heat treatment furnace, where it passes through the heating tubes within the furnace for heat treatment. A control panel 22 is mounted on the side of the placement rack 1, which controls the temperature within the heat treatment furnace.

[0036] Example 2:

[0037] Reference Figure 2Different from the above embodiments, the present invention also provides an embodiment, in which the multi-layer heat insulation component 3 includes a protective layer 8 and a reflective layer 10, and the protective layer 8 and the reflective layer 10 are both arranged on the inner side of the heat treatment furnace shell 2, and the reflective layer 10 is arranged between the heat treatment furnace shell 2 and the protective layer 8. The protective layer 8 is a ceramic fiber material. The ceramic fiber material is characterized by high temperature resistance, low thermal conductivity, light weight, good thermal insulation effect and thermal shock resistance. The reflective layer 10 is coated with aluminum foil. The aluminum foil coating is covered on the inner surface of the heat treatment furnace shell 2 to enhance the heat radiation reflection effect. The protective layer 8 is arranged on its outer layer to protect the reflective layer 10.

[0038] Example 3:

[0039] Reference Figure 2 Different from the above embodiments, the present invention also provides an embodiment, in which the multi-layer thermal insulation component 3 includes a protective layer 8, a thermal insulation layer 9 and a reflective layer 10. The protective layer 8, the thermal insulation layer 9 and the reflective layer 10 are all arranged on the inner side of the heat treatment furnace shell 2, the thermal insulation layer 9 is arranged between the heat treatment furnace shell 2 and the protective layer 8, and the reflective layer 10 is arranged between the heat treatment furnace shell 2 and the thermal insulation layer 9. The protective layer 8 is a ceramic fiber material, the thermal insulation layer 9 is an aerogel insulation felt, and the reflective layer 10 is coated with aluminum foil. The outer protective layer 8 protects the inner thermal insulation layer 9 and the reflective layer 10. The thermal insulation layer 9 reduces heat conduction, and the reflective layer 10 reduces radiation heat loss.

[0040] Working Principle: The protective layer 8 of ceramic fiber material, the thermal insulation layer 9 of aerogel thermal insulation felt and the reflective layer 10 coated with aluminum foil in the heat treatment furnace shell 2 cooperate with each other to provide a low thermal conductivity thermal insulation barrier, effectively reducing heat conduction from the inner layer to the outer layer, reducing heat radiation loss, and achieving effective internal heat retention.

[0041] When the filter tube 6 needs to be replaced or maintained, the current filter tube 6 is pressed downward so that the block 15 of the filter tube 6 squeezes the baffle 14 out of the slot 17 of the connecting plate 11. After the filter tube 6 is rotated, the block 15 is disengaged from the inside of the slide groove 16, and the current filter tube 6 is disassembled. The block 15 on the side of the replaced or maintained filter tube 6 is aligned with the slide groove 16 and slides into the connecting plate 11. The filter tube 6 is rotated, and the block 15 is aligned with the slot 17. Through the cooperation of the fixing plate 12 and the spring telescopic rod 13, the baffle 14 is forced to press the block 15 into the inside of the slot 17, and the installation of the filter tube 6 is completed.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A polyimide film heat treatment furnace, comprising a placement rack (1), characterized in that: A heat treatment furnace shell (2) is provided on the top of the placement rack (1), a multi-layer heat insulation component (3) is installed inside the heat treatment furnace shell (2), an exhaust pipe (4) is provided on the top of the heat treatment furnace shell (2), a quick-release component (5) is installed inside the exhaust pipe (4), a filter pipe (6) is provided on the top of the exhaust pipe (4), a clamping block (15) is fixedly connected to the outside of the filter pipe (6), and a transmission component (7) is installed on the top of the placement rack (1); The multi-layer thermal insulation component (3) comprises a protective layer (8) and a thermal insulation layer (9), wherein the protective layer (8) and the thermal insulation layer (9) are both arranged on the inner side of the heat treatment furnace shell (2), and the thermal insulation layer (9) is arranged between the heat treatment furnace shell (2) and the protective layer (8), wherein the protective layer (8) is a ceramic fiber material, and the thermal insulation layer (9) is an aerogel thermal insulation felt.

2. The polyimide film heat treatment furnace according to claim 1, characterized in that: The multi-layer heat insulation assembly (3) includes a reflective layer (10), the protective layer (8) and the reflective layer (10) are both arranged on the inner side of the heat treatment furnace shell (2), the reflective layer (10) is arranged between the heat treatment furnace shell (2) and the protective layer (8), the protective layer (8) is a ceramic fiber material, and the reflective layer (10) is coated with an aluminum foil coating.

3. The polyimide film heat treatment furnace according to claim 2, characterized in that: The protective layer (8), the heat insulation layer (9) and the reflective layer (10) are all arranged on the inner side of the heat treatment furnace shell (2); the heat insulation layer (9) is arranged between the heat treatment furnace shell (2) and the protective layer (8); the reflective layer (10) is arranged between the heat treatment furnace shell (2) and the heat insulation layer (9); the protective layer (8) is a ceramic fiber material; the heat insulation layer (9) is an aerogel insulation felt; and the reflective layer (10) is coated with an aluminum foil coating.

4. The polyimide film heat treatment furnace according to claim 1, wherein: The quick-release assembly (5) comprises a connecting plate (11), the connecting plate (11) being fixedly connected to the interior of the exhaust pipe (4), the interior of the exhaust pipe (4) being fixedly connected to a fixing plate (12), the top of the fixing plate (12) being mounted with a spring telescopic rod (13), the top of the spring telescopic rod (13) being fixedly connected to a baffle (14), and the connecting plate (11) being arranged on the top of the baffle (14).

5. The polyimide film heat treatment furnace according to claim 4, characterized in that: A sliding groove (16) and a clamping groove (17) are provided inside the connecting plate (11); the clamping block (15) is slidably connected inside the sliding groove (16); and the clamping block (15) and the clamping groove (17) are clamped to each other.

6. The polyimide film heat treatment furnace according to claim 4, characterized in that: A protective plate (18) is fixedly connected to the bottom of the filter tube (6), and the protective plate (18) is arranged on the inner side of the connecting plate (11), the baffle (14) and the fixed plate (12).

7. The polyimide film heat treatment furnace according to claim 1, characterized in that: The transmission component (7) includes a reel (19), the reel (19) is rotatably connected to the top of the placement rack (1), the top of the placement rack (1) is rotatably connected to a reel (20), the side of the placement rack (1) is fixedly connected to a motor (21), and one end of the reel (20) is fixedly connected to the output end of the motor (21).

8. The polyimide film heat treatment furnace according to claim 1, wherein: A control panel (22) is installed on the side of the placement rack (1).

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