A polyimide film curing device

Abstract

This utility model discloses a polyimide film curing device in the field of polyimide film curing technology, comprising: a base, an unwinding roller, and a winding roller. The base is equipped with the unwinding roller and the winding roller, and also with a curing mechanism and a homogenizing mechanism. The curing mechanism includes a curing chamber, which is fixedly mounted on the upper end of the base. The curing chamber contains a heating unit, which includes a first heating unit, a second heating unit, and a third heating unit, each containing a heating plate. This polyimide film curing device utilizes independent temperature control in different temperature zones to cure the polyimide film. The first heating unit performs low-temperature preheating, the second heating unit performs medium-temperature curing, and the third heating unit performs high-temperature stabilization treatment, ensuring uniform heating of the polyimide film, improving curing quality, and enhancing the curing effect. This improves the practicality and curing efficiency of the device.

Description

Technical Field

[0001] This utility model relates to the field of polyimide film curing technology, and in particular to a polyimide film curing device. Background Technology

[0002] Polyimide film is a new type of high-temperature resistant organic polymer film. It is made by polycondensation of pyromellitic dianhydride and diaminodiphenyl ether in a strongly polar solvent, followed by casting and imidization. It has excellent mechanical properties, electrical properties, chemical stability and high and low temperature resistance, and is known as "golden film".

[0003] In response, Chinese patent application number CN202122391258.7 discloses a curing device for polyimide film processing, including an unwinding roller, an auxiliary roller, a winding roller, and a drying chamber; the unwinding roller, the auxiliary roller, and the winding roller are connected by a polyimide film, and the drying chamber is disposed between the auxiliary roller and the winding roller; the left and right sides of the drying chamber are respectively provided with a feed inlet and a discharge outlet, and a heating mechanism is provided on the side of the drying chamber near the feed inlet, and a blowing mechanism is installed inside the heating mechanism.

[0004] However, existing polyimide film curing equipment directly cures polyimide films through a single temperature zone, but the use of a single temperature field for heating leads to uneven heating of the film, affecting the curing effect of the polyimide film. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a polyimide film curing device.

[0006] The purpose of this utility model is achieved as follows: A polyimide film curing device includes: a base, an unwinding roller, and a rewinding roller. The base is provided with the unwinding roller and the rewinding roller. The base is also provided with a curing mechanism and a homogenizing mechanism. The curing mechanism includes a curing chamber, which is fixedly assembled on the upper end of the base. The curing chamber is provided with a heating unit, which includes a first heating unit, a second heating unit, and a third heating unit. The first heating unit, the second heating unit, and the third heating unit are provided with heating plates inside. The heating plates are connected to an external power source. The first heating unit, the second heating unit, and the third heating unit are fixedly connected by connecting columns.

[0007] Preferably, the curing chamber has an adjustment groove inside, a cylinder is installed inside the adjustment groove, the output end of the cylinder is fixedly connected to a connecting seat, and the outer wall of the connecting seat is fixedly connected to the second heating unit.

[0008] Preferably, the outer walls of the first heating unit and the third heating unit are fixedly connected to sliders, which are slidably disposed inside the groove, which is opened inside the curing chamber.

[0009] Preferably, the heating plate is a red-hot heating element, and the interior of the heating plate is composed of a quartz glass tube and a resistance wire.

[0010] Preferably, the uniformizing mechanism includes a circulating fan, which is fixedly mounted on the upper end of the base. One end of the circulating fan is connected to a duct, and the end of the duct away from the circulating fan is fixedly connected to an air inlet seat. The air inlet seat is mounted at the air inlet of the curing box.

[0011] Preferably, a guide plate is bolted to the inner wall of the air inlet of the curing box, the guide plate has air holes inside, and the guide plate is arc-shaped.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model utilizes a curing chamber, a first heating unit, a second heating unit, a third heating unit, heating plates, connecting columns, and adjusting grooves to transport a polyimide film into the curing chamber using unwinding and rewinding rollers. The polyimide film is then positioned between two sets of heating units (first, second, and third). Power is applied to heat the heating plates, causing them to radiate infrared rays to cure the polyimide film. The different resistance within each heating plate results in varying amounts of heat generated. The first and second heating units... The first, second, and third heating units form different heating zones. When the polyimide film is heated and cured, each temperature zone of the first, second, and third heating units is independently temperature-controlled, allowing the polyimide film to be heated evenly. This allows the polyimide film curing equipment to cure the polyimide film by independently controlling the temperature of different zones. The first heating unit preheats at a low temperature, the second heating unit cures at a medium temperature, and the third heating unit provides high-temperature stabilization treatment, ensuring that the polyimide film is heated evenly, improving the curing quality, and resulting in better curing effect. This enhances the practicality and curing effect of the device.

[0014] 2. This utility model utilizes a circulating fan, air duct, air inlet seat, and guide plate. Activating the circulating fan allows air to be transported through the air duct and air inlet seat into the curing chamber. This facilitates uniform airflow during heating and curing, preventing localized atmospheric differences from affecting the curing effect and accelerating exhaust gas discharge. An arc-shaped guide plate at the air inlet guides the incoming air, ensuring the required curing atmosphere (such as nitrogen or inert gas) is evenly distributed around the film. This prevents excessively strong or weak localized airflow, ensuring consistent curing conditions across the film, improving curing efficiency, and enhancing the device's practicality and curing effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a frontal three-dimensional schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a frontal three-dimensional cross-sectional view of the overall structure of this utility model.

[0018] Figure 3 This is a bottom-view perspective view of a partial structure of the curing mechanism of this utility model.

[0019] Figure 4 This is a frontal three-dimensional cross-sectional view of a partial structure of the curing mechanism of this utility model.

[0020] In the diagram: 111, base; 112, unwinding roller; 113, winding roller; 2, curing mechanism; 211, curing box; 212, first heating unit; 213, second heating unit; 214, third heating unit; 215, heating plate; 216, connecting column; 217, adjusting groove; 218, cylinder; 219, connecting seat; 220, slider; 221, sliding groove; 3, uniform distribution mechanism; 311, circulating fan; 312, air duct; 313, air inlet seat; 314, guide plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-4 The present invention provides one embodiment as shown:

[0023] A polyimide film curing device. The base 111, unwinding roller 112, winding roller 113 and cylinder 218 used in this application are products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to those skilled in the art.

[0024] It includes: a base 111, an unwinding roller 112, and a winding roller 113. The base 111 is provided with the unwinding roller 112 and the winding roller 113. The base 111 is also provided with a curing mechanism 2 and a homogenizing mechanism 3. The curing mechanism 2 includes a curing box 211, which is fixedly assembled on the upper end of the base 111. The curing box 211 is provided with a heating unit, which includes a first heating unit 212, a second heating unit 213, and a third heating unit 214. The first heating unit 212, the second heating unit 213, and the third heating unit 214 are provided with a heating plate 215, which is connected to an external power source. The first heating unit 212, the second heating unit 213, and the third heating unit 214 are fixedly connected by a connecting post 216.

[0025] When using this polyimide film curing equipment, the polyimide film is conveyed into the curing chamber 211 using the unwinding roller 112 and the take-up roller 113, placing the polyimide film between the upper and lower sets of first heating units 212, second heating units 213, and third heating units 214. Power is turned on to heat the heating plates 215, causing them to radiate infrared rays to heat and cure the polyimide film. Each heating plate 215 has a different internal resistance, resulting in different amounts of heat generated, creating different heating zones at the first heating unit 212, second heating unit 213, and third heating unit 214. During the curing process, each zone of the first heating unit 212, second heating unit 213, and third heating unit 214 is independently temperature-controlled. The first heating unit 212 preheats at a low temperature, the second heating unit 213 cures at a medium temperature, and the third heating unit 214 provides high-temperature stabilization, ensuring uniform heating of the polyimide film, improving curing quality, and resulting in better curing effects.

[0026] The curing chamber 211 has an adjustment groove 217 inside, and a cylinder 218 is installed inside the adjustment groove 217. The output end of the cylinder 218 is fixedly connected to a connecting seat 219, and the outer wall of the connecting seat 219 is fixedly connected to the second heating unit 213.

[0027] The control cylinder 218 is started, which drives the connecting seat 219 to adjust its height, thereby driving the second heating unit 213 to adjust its height synchronously. Under the connection of the connecting column 216, the first heating unit 212 and the third heating unit 214 adjust synchronously with the second heating unit 213, which can conveniently adjust the distance between the two sets of heating elements and facilitate the adjustment of the heating position of the heating plate 215.

[0028] The outer walls of the first heating unit 212 and the third heating unit 214 are fixedly connected to sliders 220, which are slidably disposed inside the slide groove 221, which is located inside the curing chamber 211.

[0029] When the first heating unit 212 and the third heating unit 214 move, the slider 220 moves synchronously inside the slide groove 221, thereby limiting the movement of the first heating unit 212 and the third heating unit 214 and making their movement more stable.

[0030] Heating plate 215 is a red-hot heating element, and the interior of heating plate 215 consists of a quartz glass tube and a resistance wire;

[0031] Heating plate 215 is an infrared heating element. Infrared heating elements have low thermal inertia and heat up quickly, which can quickly reach the set temperature. It is suitable for polyimide film curing processes that require high heating speed. It can quickly start the heating process and improve production efficiency.

[0032] The uniform mechanism 3 includes a circulating fan 311, which is fixedly mounted on the upper end of the base 111. One end of the circulating fan 311 is connected to a duct 312, and the end of the duct 312 away from the circulating fan 311 is fixedly connected to an air inlet seat 313. The air inlet seat 313 is mounted at the air inlet on the curing box 211.

[0033] When using this polyimide film curing equipment, start the circulating fan 311 to deliver air through the air duct 312 and the air inlet 313 to the inside of the curing chamber 211. This facilitates the uniform flow of the atmosphere during heating and curing inside the curing chamber 211, avoids local atmosphere differences from affecting the curing effect, and accelerates the discharge of exhaust gas.

[0034] A baffle plate 314 is bolted to the inner wall of the air inlet of the curing box 211. The baffle plate 314 has air holes inside and is curved.

[0035] An arc-shaped baffle 314 is installed at the air inlet to guide the incoming air, so that the atmosphere required for curing, such as nitrogen or inert gas, is evenly distributed around the film, avoiding excessive or insufficient local airflow, ensuring consistent curing conditions in all parts of the film, and improving curing efficiency.

[0036] Working principle:

[0037] When using this polyimide film curing equipment, the polyimide film is conveyed into the curing chamber 211 using the unwinding roller 112 and the take-up roller 113, placing the polyimide film between the upper and lower sets of first heating units 212, second heating units 213, and third heating units 214. Power is turned on to heat the heating plates 215, causing them to radiate infrared rays to heat and cure the polyimide film. Each heating plate 215 has a different internal resistance, resulting in different amounts of heat generated, creating different heating zones at the first heating unit 212, second heating unit 213, and third heating unit 214. During the curing process, each zone of the first heating unit 212, second heating unit 213, and third heating unit 214 is independently temperature-controlled. The first heating unit 212 preheats at a low temperature, the second heating unit 213 cures at a medium temperature, and the third heating unit 214 provides high-temperature stabilization, ensuring uniform heating of the polyimide film, improving curing quality, and resulting in better curing effects.

[0038] When using this polyimide film curing equipment, start the circulating fan 311 to deliver air through the air duct 312 and air inlet 313 into the curing chamber 211. This facilitates the uniform flow of the atmosphere during heating and curing inside the curing chamber 211, avoiding local atmosphere differences that could affect the curing effect. It also accelerates the discharge of exhaust gas. An arc-shaped guide plate 314 is installed at the air inlet to guide the incoming air, ensuring that the atmosphere required for curing, such as nitrogen or inert gas, is evenly distributed around the film. This prevents the airflow from being too strong or too weak in certain areas, ensuring consistent curing conditions throughout the film and improving curing efficiency. The operation is now complete.

[0039] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A polyimide film curing apparatus comprising: The base (111), unwinding roller (112), and winding roller (113) are provided on the base (111). The base (111) is characterized by having a curing mechanism (2) and a homogenizing mechanism (3) provided on the base (111). The curing mechanism (2) includes a curing box (211), which is fixedly mounted on the upper end of the base (111). The curing box (211) is equipped with a heating unit inside. The heating unit includes a first heating unit (212), a second heating unit (213), and a third heating unit (214). The first heating unit (212), the second heating unit (213), and the third heating unit (214) are equipped with a heating plate (215). The heating plate (215) is connected to an external power source. The first heating unit (212), the second heating unit (213), and the third heating unit (214) are fixedly connected by a connecting column (216).

2. The polyimide film curing apparatus according to claim 1, wherein: The curing chamber (211) has an adjustment groove (217) inside, and a cylinder (218) is installed inside the adjustment groove (217). The output end of the cylinder (218) is fixedly connected to a connecting seat (219), and the outer wall of the connecting seat (219) is fixedly connected to the second heating unit (213).

3. The polyimide film curing apparatus according to claim 1, wherein: The first heating unit (212) and the third heating unit (214) are fixedly connected to the outer walls of the slider (220), the slider (220) is slidably disposed inside the slide groove (221), and the slide groove (221) is opened inside the curing box (211).

4. The polyimide film curing equipment according to claim 1, characterized in that: The heating plate (215) is a red-hot heating element, and the interior of the heating plate (215) is composed of a quartz glass tube and a resistance wire.

5. The polyimide film curing equipment according to claim 1, characterized in that: The uniform mechanism (3) includes a circulating fan (311), which is fixedly mounted on the upper end of the base (111). One end of the circulating fan (311) is connected to a duct (312), and the end of the duct (312) away from the circulating fan (311) is fixedly connected to an air inlet seat (313). The air inlet seat (313) is mounted on the air inlet of the curing box (211).

6. The polyimide film curing equipment according to claim 1, characterized in that: The inner wall of the air inlet of the curing box (211) is fitted with a guide plate (314) by bolts. The guide plate (314) has air holes inside and is curved.

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