CN204185418U - Kapton production imination equipment - Google Patents

Abstract

The utility model provides an imidization equipment for polyimide film production, which relates to the technical field of polyimide film production, comprising: an imidization furnace cavity, which is rectangular; In the amination furnace cavity, the upper heating tube is arranged opposite to the lower heating tube, the upper heating tube is set on the upper part of the imidization furnace cavity, and the lower heating tube is set on the lower part of the imidization furnace cavity; Chains, including two groups in total, are arranged oppositely. The two groups of circulating conveying chains all pass through the imidization furnace chamber, and form circulation loops respectively inside and outside the imidization furnace chamber; Below a section of circular conveyor chain, this section of circular conveyor chain is supported by rails; horizontal guide rail and guide sleeve, the horizontal guide rail passes through the guide sleeve, and the upper end of the guide sleeve fixes the track. The utility model provides a new transmission mode of the film in the imidization furnace, which can make the film more evenly heated and improve the effect of high-temperature imidization. The structure design of the device is relatively simple and the cost is low.

Description

Imidization equipment for polyimide film production

technical field

The utility model relates to the technical field of polyimide film production, in particular to imidization equipment for polyimide film production.

Background technique

Polyimide film is a new type of high temperature resistant organic polymer film. It is formed by polycondensation, salivation and film formation, and then imidization. It is currently the best thin film insulating material in the world, with excellent mechanical properties, electrical properties, chemical stability, high radiation resistance, high temperature resistance and low temperature resistance (-269°C to +400°C). In 1959, DuPont Company of the United States first synthesized aromatic polyimide. In 1962, it tried to make a polyimide film (PI film), and began production in 1965. The brand name is KAPTON. At the end of the 1960s, my country could produce polyimide films in small batches, and now it has been widely used in various fields such as aviation, navigation, spacecraft, rocket missiles, atomic energy, and electronic and electrical industries. It is especially suitable as the substrate of flexible printed circuit boards and insulating materials for various high-temperature-resistant motors and electrical appliances.

The production of polyimide film is basically a two-step method, the first step: synthesis of polyamic acid, the second step: film imidization. The film forming methods mainly include dipping method (or aluminum foil gluing method), casting method and salivation stretching method. The impregnation method has simple equipment and simple process, but aluminum powder is often stuck on the surface of the film, the length of the film is limited, and the production efficiency is low. The investment is large and the product price is high; at present, the salivation method is mostly used.

my country's self-produced polyimide film technology is also constantly improving and perfecting, but with the gradual expansion of the application field, the demand for polyimide film is also increasing rapidly, and high-performance polyimide film still relies on imports. The high price is not conducive to reducing the production cost of products in the application field. There is still a lot of room for improvement in my country's self-produced polyimide film technology. For the polyimide film production technology by the salivation method, there is an urgent need to actively develop the preparation of special resins and stable production technology to provide a solid foundation for the industrialization of polyimide films and to fill the gaps in related technical fields in my country. The development of a complete set of production equipment with independent intellectual property rights will reduce the price of domestic high-performance polyimide films and reduce the cost of its application fields, which is very beneficial to the development of my country's electronic and electrical industries. At present, the equipment for producing polyimide film by salivation method still has many deficiencies, and it still needs continuous improvement. Especially in terms of energy saving, emission reduction, and material recycling and reuse, there are major deficiencies. The existing production equipment is not highly automated, and the equipment control accuracy is poor, which is not convenient for online monitoring.

Production of polyimide film by salivation method: the polyamic acid solution after defoaming is pressed from the stainless steel solution storage tank through the pipeline into the saliva nozzle storage tank on the front head. The steel belt runs at a constant speed, and the solution in the storage tank is taken away by the front scraper of the drool nozzle to form a liquid film with uniform thickness, and then enters the drying tunnel to dry.

The clean and dry air is sent by the blower to the heater to preheat to a certain temperature and then enters the upper and lower drying passages. The direction of the hot air flow is opposite to that of the steel belt, so that the temperature of the liquid film rises gradually during drying, and the solvent evaporates gradually, increasing the drying effect. The polyamic acid film runs on the steel belt for a week, the solvent evaporates to become a solid film, and the film peeled off from the steel belt is led to the imidization furnace through the guide roller.

The existing imidization furnace is generally in the form of multiple rollers. The guide rollers at the same speed as the salivating machine guide the polyamic acid film into the imidization furnace. After high-temperature imidization, it is wound up by a winder. The imidization effect of the imidization furnace with the existing structure is not ideal. There are also many defects in the structural design, the equipment installation and maintenance are inconvenient, and the cost is high.

Utility model content

The purpose of the utility model is to provide an imidization equipment for polyimide film production, through which the formed polyamic acid film can be imidized to produce polyimide film.

The technical problem to be solved by the utility model adopts the following technical solutions to realize:

An imidization equipment for polyimide film production, characterized in that it comprises: an imidization furnace cavity, which is rectangular; an upper heating tube and a lower heating tube are arranged in the imidization furnace cavity, and the upper heating The tube is set opposite to the lower heating tube, the upper heating tube is set on the upper part of the imidization furnace cavity, and the lower heating tube is set on the lower part of the imidization furnace cavity; the circulating conveying chain includes two groups in total, which are arranged oppositely, Both sets of circulating conveying chains pass through the imidization furnace chamber, and form circulation loops inside and outside the imidization furnace chamber; the track is set under a section of the circular conveying chain that passes through the imidization furnace chamber, and this section circulates The chain is supported by a track; the track is composed of a mounting base plate and a limit track body, and a "U"-shaped guide groove is opened on the upper end of the limit track body, and the circulating conveyor chain is arranged in the guide groove, and the limit track body is also An oil supply chamber is provided, and the oil supply chamber communicates with the "U"-shaped guide groove through the oil supply nozzle. An oil filler is opened on the outer wall of the limit rail, and the oil filler communicates with the oil supply chamber, and an oil filler cover is arranged inside the oil filler; The transverse guide rail and the guide sleeve, the transverse guide rail passes through the guide sleeve, and the upper end of the guide sleeve fixes the track.

Both the upper heating tube and the lower heating tube are arranged in a U shape, there is a gap between the two ends of the upper heating tube and the lower heating tube and the two side walls of the imidization furnace cavity, and the upper heating tube and the lower heating tube are arranged as The U-shaped structure can leave a gap between the two ends of the upper heating tube and the lower heating tube and the two side walls of the imidization furnace cavity, so that workers can enter the imidization furnace cavity for installation, maintenance or disassembly.

The circulating conveying chain includes a chain meshing with the sprocket, the upper end of the chain is fixed with a needle plate installation plate, one end of the needle plate installation plate is fixed with a needle plate, and a row of needle bodies with needle points upward is fixed on the needle plate, and the lower end of the chain is A roll frame is provided, and roller wheels are installed on the roll frame.

The track is composed of a mounting base plate and a limiting track body. A "U"-shaped guide groove is opened on the upper end of the limiting track body. The circulating conveying chain is arranged in the guiding groove, and the mounting base plate is fixedly connected with the guide sleeve. The rollers arranged at the lower end of the chain roll on the bottom surface of the guide groove, so that the chain can be smoothly driven in the guide groove.

The needle plate mounting plate is bent into a "Z" shape, and the needle plate mounting plate is detachably mounted on the upper end of the chain through fasteners.

The film peeled off from the steel belt is led to the imidization furnace through the guide roller. The two sides of the film are fixed by the needle plate, and driven by the circular conveyor chain through the imidization furnace chamber at a uniform speed. The imidization furnace chamber is controlled by the upper heating tube and the lower The heating tube is heated, and the guide sleeve can move along the transverse guide rail to adjust the position of the guide rail and the circulating conveyor chain.

The track is composed of multiple track monomers connected in series from end to end, and the track adopts a split structure, which is convenient for production, installation and local maintenance.

The beneficial effects of the utility model are:

The utility model provides a new transmission mode of the film in the imidization furnace, which can make the film more evenly heated and improve the effect of high-temperature imidization. The structure design of the device is relatively simple and the cost is low; Both the conveyor chain and the guide rail supporting the circular conveyor chain adopt a split splicing structure design, which reduces the difficulty of equipment installation and facilitates later maintenance. The circular conveyor chain can be adjusted horizontally to facilitate control during production.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic diagram of the installation structure of the circulating conveyor chain and the track.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments and accompanying drawings, but the following embodiments are only preferred embodiments of the utility model , not all. Based on the examples in the implementation manners, other examples obtained by those skilled in the art without making creative efforts all belong to the protection scope of the present invention.

As shown in Figure 1, an imidization equipment for polyimide film production includes: an imidization furnace cavity 1, which is rectangular; an upper heating tube 3 and a lower heating tube 4, which are arranged in the imidization furnace cavity 1 Inside, the upper heating pipe 3 is arranged opposite to the lower heating pipe 4, the upper heating pipe 3 is arranged on the upper part of the imidization furnace chamber 1, and the lower heating pipe 4 is arranged on the lower part of the imidization furnace chamber 1; Including two groups, set opposite to each other, two groups of circulating conveying chains 2 pass through the imidization furnace chamber 1, and form circulation loops respectively inside and outside the imidization furnace chamber 1; Below a section of circular conveyor chain 2 in the interior, this section of circular conveyor chain 2 is supported by track 5; horizontal guide rail 6 and guide sleeve 7, horizontal guide rail 6 passes through guide sleeve 7, and guide sleeve 7 upper end fixes track 5.

As shown in Figure 2, the circulating conveying chain 2 includes a chain 21 meshing with the sprocket, the upper end of the chain 21 is fixed with a needle plate mounting plate 22, and one end of the needle plate mounting plate 22 is fixed with a needle plate 23, and the needle plate 23 is fixed with a needle point upward. A row of needle bodies 24, the lower end of the chain 21 is provided with a roller frame 25, and a roller wheel 26 is installed on the roller frame 25; Installed on the upper end of the chain 21; the track 5 is composed of an installation base plate 52 and a limit track body 51, and a "U"-shaped guide groove is opened at the upper end of the limit track body 51, and the circulating conveyor chain 2 is arranged in the guide groove, and the installation base plate 52 is connected with the guide groove. Set of 7 fixed connections.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the utility model Under the premise of the spirit and scope, the utility model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (3)

1. a Kapton production imination equipment, is characterized in that, comprising:

Imidization furnace chamber is rectangle;

Upper heating tube and lower heating tube, be arranged in imidization furnace chamber, described upper heating tube and lower heating tube are oppositely arranged, described upper heating tube is arranged on the top of imidization furnace chamber, described lower heating tube is arranged on the bottom of imidization furnace chamber, described upper heating tube and lower heating tube are all arranged to U-shaped, described upper heating tube and leave space between lower heating tube two ends and imidization furnace chamber two side;

Circulating conveyor chain, comprise two groups altogether, be oppositely arranged, two groups of circulating conveyor chains all through imidization furnace chamber, and inside and outside imidization furnace chamber each self-forming circulation loop, described circulating conveyor chain comprises the chain with sprocket engagement, needle plate mounting plate is fixed in described chain upper end, and needle plate mounting plate one end is fixed with needle plate, needle plate is fixed with needle point row's needle body upwards, described chain lower end is provided with roll stand, and roll stand is provided with running roller;

Track, be provided through below one section of circulating conveyor chain in imidization furnace chamber, this section of circulating conveyor chain is by rail supported; Described track is made up of mounting base and limit track body, " U " font guide path is driven in limit track body upper end, described circulating conveyor chain is arranged in this guide path, also fuel supply chamber is provided with in described limit track body, fuel supply chamber is communicated with " U " font guide path by fuel oil supply nozzle, the external wall of described limit track offers oil port, and oil port is communicated with fuel supply chamber, is provided with filler cap in oil port;

Cross slide way and guide pin bushing, cross slide way passes guide pin bushing, guide pin bushing upper end trapped orbit.

2. Kapton production imination equipment according to claim 1, is characterized in that: described needle plate mounting plate is bent into " Z " font, needle plate mounting plate is arranged on chain upper end by fastening piece is dismountable.

3. Kapton production imination equipment according to claim 1, is characterized in that: described track is formed by multistage track monomer head and the tail successively serial connection.