Imidization equipment for polyimide film production

Abstract

The invention relates to the technical field of polyimide film production, and discloses polyimide film production imidization equipment which comprises an imidization equipment box, a heating pipe is fixedly connected to the interior of the imidization equipment box and used for heating a polyimide film, imidization treatment of the polyimide film is achieved, and the imidization equipment box is internally provided with a heating pipe. An unwinding roller and a winding roller are fixedly mounted in the imidization equipment box, a bubble eliminating mechanism is arranged in the imidization equipment box, the bubble eliminating mechanism comprises a motor, bubbles on the surface of a polyimide film can be scraped through longitudinal movement of a first scraping plate, and the bubbles on the surface of the polyimide film can be removed through longitudinal movement of a second scraping plate. The first scraping plate can more flexibly adapt to micro fluctuation on the surface of the film through high-frequency vibration, bubbles are broken or discharged, after the bubbles are eliminated, heat and reactants can be uniformly distributed in the film, the imidization reaction is more uniformly carried out in the whole film, the reaction degrees of all parts are more consistent, and the reaction efficiency is improved. The consistency of the performance of the polyimide film is favorably improved.

Description

Technical Field

[0001] The invention relates to the technical field of polyimide film production, in particular to imidization equipment for polyimide film production. Background Art

[0002] Polyimide film is a new type of high temperature resistant insulating organic polymer film, which is now widely used in various fields such as aviation, navigation, and electronic and electrical industries. In the production process of polyimide film, it needs to be imidized.

[0003] For example, the publication number CN213739256U discloses a thin film imidization furnace, which belongs to the technical field of polyimide film production. The thin film imidization furnace includes a furnace body, a conveying mechanism, a plurality of first heating elements and a plurality of second heating elements. The furnace body has a heating chamber, and the conveying mechanism is arranged in the heating chamber, and the conveying mechanism is used to drive the film to move in the front-to-back direction. A plurality of first heating elements are located above the conveying mechanism and are arranged in the heating chamber at intervals along the left-right direction, and the first heating elements are detachably connected to the furnace body. A plurality of second heating elements are located below the conveying mechanism and are arranged in the heating chamber at intervals along the left-right direction, and the second heating elements are detachably connected to the furnace body. The thin film imidization furnace adopting this structure solves the problem of uneven heating of the film in the left-right direction, thereby ensuring the temperature uniformity in the plane of the film, and then avoiding large differences in the performance of the film after imidization, so that the quality of the film is affected.

[0004] The polyimide film may contain bubbles due to residual solvent. The presence of bubbles forms a local gas environment inside the film, resulting in uneven heat transfer and diffusion of reactants, affecting the overall imidization degree and reaction uniformity. Therefore, it is necessary to scrape off the bubbles on the film while rolling up the polyimide film to prevent the bubbles from affecting the imidization reaction effect. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an imidization device for producing polyimide film in view of the deficiencies in the above-mentioned prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an imidization equipment for polyimide film production, including an imidization equipment box, a heating tube is fixedly connected to the interior of the imidization equipment box, and the heating tube is arranged to heat the polyimide film to achieve imidization treatment of the polyimide film, and a reeling roller and a winding roller are fixedly installed inside the imidization equipment box, and a bubble elimination mechanism is arranged inside the imidization equipment box, and the bubble elimination mechanism includes a motor, and the motor is fixedly connected to the back of the imidization equipment box, and the output end of the motor is fixedly connected to a bidirectional reciprocating screw through a coupling, and the bidirectional reciprocating screw movably penetrates the imidization equipment box and extends into the interior thereof, so that The outer wall of the bidirectional reciprocating screw is threadedly connected with two wire sleeves, the interior of the imidization equipment box is fixedly connected to a limit plate, the wire sleeve is slidably connected to the bottom of the limit plate, the internal movement of the wire sleeve is penetrated by a vertical rod and extends to the upper and lower sides thereof, the bottom of the vertical rod is fixedly connected to a first fixed plate, the front of the first fixed plate is fixedly connected to a first scraper, the interior of the imidization equipment box is fixedly connected to a top block, the first scraper moves on the top of the polyimide film to scrape off bubbles, and the speed of winding up the polyimide film is slow, so the bubbles can be scraped off in all directions, and a top block is provided to limit the bottom of the polyimide film to prevent the polyimide film from falling downward during scraping.

[0007] Preferably, a second fixing plate is fixedly connected to the top of the vertical rod, a first spring is wound around the outer wall of the vertical rod, and the first spring is arranged between the bottom of the second fixing plate and the top of the wire sleeve.

[0008] Preferably, a resistance ball is fixedly connected to the top of the second fixed plate, a connecting plate is fixedly connected to the inner wall of the imidization equipment box, a wave groove is provided at the bottom of the connecting plate, the resistance ball and the wave groove are in mutual resistance, and when the resistance ball moves on the wave groove, the resistance ball vibrates slightly up and down at high frequency under the action of the wave groove, thereby driving the first scraper at the bottom to vibrate slightly at high frequency. Through high-frequency vibration, the first scraper can more flexibly adapt to the microscopic undulations of the film surface, making the film material around the bubbles more easily deformed and flowed, thereby breaking the surface tension of the bubbles and causing the bubbles to burst or be discharged.

[0009] Preferably, a solvent scraping mechanism is provided inside the imidization equipment box, and the solvent scraping mechanism includes two first vertical plates, the first vertical plates are fixedly connected to the inside of the imidization equipment box, a conveying roller is rotatably connected between the two first vertical plates, a first sliding rod is rotatably connected inside the two first vertical plates, a second scraper is movably sleeved on the outer wall of the first sliding rod, a second spring is movably sleeved on the outer wall of the first sliding rod, the second spring is arranged between one end of the second scraper and the front side of the first vertical plate, and the second scraper is arranged to scrape off residual solvent on the polyimide film.

[0010] Preferably, one end of the second scraper is fixedly connected to an elastic telescopic rod, an arc groove is opened on the front side of the first vertical plate, the interior of the arc groove is fixedly connected to one end of a third spring, one end of the elastic telescopic rod is movably sleeved inside the arc groove, the outer wall of the elastic telescopic rod is fixedly connected to the other end of the third spring, the second scraper is always in contact with the polyimide film, when the thickness of the polyimide film changes, the second scraper will drive the elastic telescopic rod to slide inside the arc groove, and the sliding stroke is limited by the third spring.

[0011] Preferably, the left side of the first scraper is slidably connected to a first push rod, one end of the first push rod is a telescopic end, and a square groove is provided on the surface of the second scraper, and the square groove is sleeved outside the telescopic end of the first push rod. When the first scraper moves axially, it will drive the first push rod to move axially, and the first push rod will contact the inner wall of the square groove to make the second scraper move axially. When the contact is released, the second scraper will reset, so that the axial movement of the second scraper can be achieved. The axial displacement makes the contact position of the second scraper and the polyimide film constantly change, which reduces the accumulation of solvent at the same position, and can continuously maintain the scraping ability of the second scraper, thereby enhancing the overall scraping effect.

[0012] Preferably, a cleaning mechanism is provided inside the imidization equipment box, and the cleaning mechanism includes two fixed rods, the two fixed rods are fixedly connected to the inside of the imidization equipment box, the outer walls of the two fixed rods are respectively fixedly connected with fixed sleeves, a rectangular shaft is rotatably connected between the two fixed sleeves, the outer wall movable sleeve of the rectangular shaft is provided with a fourth spring, the outer wall movable sleeve of the rectangular shaft is provided with a collecting box, the left side of the collecting box is fixedly connected with a third scraper, the third scraper is arranged at the lower right side of the winding roller, the third scraper is arranged at the lower right side of the winding roller and conflicts with the polyimide film, so that the dust sticking on the polyimide film can be scraped into the inside of the collecting box, thereby realizing the scraping and collection of the dust.

[0013] Preferably, a second push rod is fixedly connected to the right side of the first scraper, and a baffle is fixedly connected to the right side of the collecting box. When the second push rod moves axially, it will abut against the baffle, thereby pushing the baffle to move axially, thereby driving the collecting box to move axially. When the abutment is broken, it will be reset under the action of the fourth spring, thereby driving the collecting box to shake. The shaking can shake the dust on the third scraper into the inside of the collecting box, thereby achieving the dust collection effect.

[0014] The present invention adopts the above technical solution to bring the following beneficial effects: 1. This imidization equipment for the production of polyimide film can scrape off bubbles on the surface of the polyimide film through the longitudinal movement of the first scraper, and through high-frequency vibration, the first scraper can more flexibly adapt to the microscopic undulations on the surface of the film to cause the bubbles to burst or be discharged. After the bubbles are eliminated, heat and reactants can be evenly distributed in the film, so that the imidization reaction can proceed more evenly throughout the film, and the reaction degree of each part is more consistent, which is helpful to improve the consistency of the performance of the polyimide film.

[0015] 2. The imidization equipment for producing polyimide film can scrape off the residual solvent on the surface of the polyimide film through the second scraper. The residual solvent will hinder the contact between the imidization reagent and the precursor. After the solvent is scraped off, the reagent can better penetrate into the interior of the film and fully react with the polymer molecules to increase the degree of imidization and make the imide ring structure in the polyimide molecular chain more complete. The second scraper can rotate, so it can adapt to the scraping of polyimide films of different thicknesses.

[0016] 3. This imidization equipment for the production of polyimide film continuously changes the contact position between the second scraper and the polyimide film through the axial displacement of the second scraper, thereby reducing the accumulation of solvent at the same position and continuously maintaining the scraping ability of the second scraper, thereby enhancing the overall scraping effect, allowing the reagent to better penetrate into the interior of the film, fully react with the polymer molecules, and improve the degree of imidization.

[0017] 4. The imidization equipment for the production of polyimide film can scrape off the dust on the surface of the polyimide film through the third scraper. Cleaning the dust can allow these adsorbed reagents to re-participate in the reaction, further improve the imidization degree, and make the imide ring structure in the polyimide molecular chain more perfect. By shaking the collection box, the dust on the third scraper can be shaken and dropped into the collection box, thereby achieving the dust collection effect and preventing the dust from being scattered into the interior of the imidization equipment box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the structure of the present invention; Figure 2It is a first cross-sectional view of the structure of the present invention; Figure 3 It is a side view of the structure of the present invention; Figure 4 It is a second cross-sectional view of the structure of the present invention; Figure 5 This is an enlarged view of structure A of the present invention; Figure 6 It is a third cross-sectional view of the structure of the present invention; Figure 7 It is an enlarged view of structure B of the present invention; Figure 8 It is a fourth cross-sectional view of the structure of the present invention; Fig. 9 It is an enlarged view of structure C of the present invention.

[0019] In the figure: 1, imidization equipment box; 2, heating tube; 3, unwinding roller; 4, winding roller; 5, bubble elimination mechanism; 511, motor; 512, two-way reciprocating screw; 513, wire sleeve; 514, limit plate; 515, vertical rod; 516, first fixed plate; 517, first scraper; 518, second fixed plate; 519, first spring; 520, contact ball; 521, connecting plate; 522, top block; 6, solvent scraping mechanism; 611, first Vertical plate; 612, conveying roller; 613, first sliding rod; 614, second scraper; 615, second spring; 616, elastic telescopic rod; 617, arc groove; 618, third spring; 619, square groove; 620, first push rod; 7, cleaning mechanism; 711, fixed rod; 712, fixed sleeve; 713, rectangular shaft; 714, collecting box; 715, third scraper; 716, second push rod; 717, baffle; 718, fourth spring. DETAILED DESCRIPTION

[0020] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-9One embodiment of the present invention is: an imidization device for producing a polyimide film, comprising an imidization device box 1, a heating tube 2 is fixedly connected to the interior of the imidization device box 1, and the heating tube 2 is arranged to heat the polyimide film to achieve imidization treatment of the polyimide film, and an unwinding roller 3 and a winding roller 4 are fixedly installed inside the imidization device box 1, and a bubble elimination mechanism 5 is arranged inside the imidization device box 1, and the bubble elimination mechanism 5 includes a motor 511, and the motor 511 is fixedly connected to the back of the imidization device box 1, and the output end of the motor 511 is fixedly connected to a double coupling through a coupling. The bidirectional reciprocating screw rod 512 is movable through the imidization equipment box 1 and extends into the interior thereof. The outer wall of the bidirectional reciprocating screw rod 512 is threadedly connected with two thread sleeves 513. The interior of the imidization equipment box 1 is fixedly connected with a limit plate 514. The thread sleeve 513 is slidably connected to the bottom of the limit plate 514. The interior of the thread sleeve 513 is movable through a vertical rod 515 and extends to the upper and lower sides thereof. The bottom of the vertical rod 515 is fixedly connected with a first fixed plate 516. The front of the first fixed plate 516 is fixedly connected with a first scraper 517. The interior of the imidization equipment box 1 is fixedly connected with a top block 522 The first scraper 517 moves on the top of the polyimide film to scrape off the bubbles, and the speed of rolling up the polyimide film is slow, so the bubbles can be scraped off in all directions. A top block 522 is provided to limit the bottom of the polyimide film to prevent the polyimide film from falling down during scraping. The top of the vertical rod 515 is fixedly connected with a second fixed plate 518. The outer wall of the vertical rod 515 is wound with a first spring 519. The first spring 519 is arranged between the bottom of the second fixed plate 518 and the top of the wire sleeve 513. The top of the second fixed plate 518 is fixedly connected with a resistance ball 520. The inner wall of the imidization equipment box 1 is fixedly connected with a connecting plate 521, and a wave groove is opened at the bottom of the connecting plate 521. The resistance ball 520 resists each other with the wave groove. When the resistance ball 520 moves on the wave groove, the resistance ball 520 vibrates slightly up and down at high frequency under the action of the wave groove, thereby driving the first scraper 517 at the bottom to vibrate slightly at high frequency. Through high-frequency vibration, the first scraper 517 can more flexibly adapt to the microscopic undulations of the film surface, making the film material around the bubbles more easily deformed and flowed, thereby breaking the surface tension of the bubbles and causing the bubbles to burst or be discharged.

[0022] Working principle: wind the two ends of the polyimide film around the unwinding roller 3 and the winding roller 4, turn on the heating tube 2 and the equipment inside the imidization equipment box 1, perform imidization treatment on the polyimide film while winding the polyimide film, and start the motor 511, the motor 511 drives the two-way reciprocating screw rod 512 to rotate, and the two-way reciprocating screw rod 512 drives the two wire sleeves 513 to move when rotating, and the two wire sleeves 513 drive the vertical rod 515 to move when moving, and the vertical rod 515 drives the first fixed plate 516 at the bottom to move when moving, and the first fixed plate 516 drives the first scraper 517 to move when moving, and the first scraper 517 moves on the top of the polyimide film to scrape off the bubbles, and the speed of winding the polyimide film is slow, so it can be In order to scrape off bubbles in all directions, a top block 522 is provided to limit the bottom of the polyimide film to prevent the polyimide film from falling downward during scraping, and when the vertical rod 515 moves axially, it will drive the second fixed plate 518 to move axially, and when the second fixed plate 518 moves, it will drive the resistance ball 520 to move axially. When the resistance ball 520 moves on the wave groove, the resistance ball 520 will vibrate slightly up and down at high frequency under the action of the wave groove, thereby driving the first scraper 517 at the bottom to vibrate slightly at high frequency. Through high-frequency vibration, the first scraper 517 can more flexibly adapt to the microscopic undulations of the film surface, making the film material around the bubbles more easily deformed and flowed, thereby breaking the surface tension of the bubbles and causing the bubbles to burst or be discharged.

[0023] See also Figure 1-9On the basis of the above embodiment, in another embodiment of the present invention, a solvent scraping mechanism 6 is arranged inside the imidization equipment box 1, and the solvent scraping mechanism 6 includes two first vertical plates 611, the first vertical plates 611 are fixedly connected to the inside of the imidization equipment box 1, a conveying roller 612 is rotatably connected between the two first vertical plates 611, a first sliding bar 613 is rotatably connected inside the two first vertical plates 611, a second scraper 614 is movably sleeved on the outer wall of the first sliding bar 613, a second spring 615 is movably sleeved on the outer wall of the first sliding bar 613, the second spring 615 is arranged between one end of the second scraper 614 and the front side of the first vertical plate 611, the second scraper 614 is arranged to scrape off the residual solvent on the polyimide film, one end of the second scraper 614 is fixedly connected to an elastic telescopic rod 616, the first An arc groove 617 is provided on the front of the vertical plate 611, and the interior of the arc groove 617 is fixedly connected to one end of the third spring 618, one end of the elastic telescopic rod 616 is movably sleeved inside the arc groove 617, and the outer wall of the elastic telescopic rod 616 is fixedly connected to the other end of the third spring 618. The second scraper 614 always contacts the polyimide film. When the thickness of the polyimide film changes, the second scraper 614 will drive the elastic telescopic rod 616 to slide inside the arc groove 617, and at the same time, the sliding stroke is limited by the third spring 618. The left side of the first scraper 517 is slidably connected to the first push rod 620, and one end of the first push rod 620 is the telescopic end. A square groove 619 is provided on the surface of the second scraper 614, and the square groove 619 is sleeved on the outside of the telescopic end of the first push rod 620. When the first scraper 517 moves axially, it will drive the first push rod 620 to move axially. The first push rod 620 will abut against the inner wall of the square groove 619, causing the second scraper 614 to move axially. When the abutment is broken, the second scraper 614 will reset, thereby realizing the axial movement of the second scraper 614. The axial displacement causes the contact position between the second scraper 614 and the polyimide film to change continuously, thereby reducing the accumulation of solvent at the same position and continuously maintaining the scraping ability of the second scraper 614, thereby enhancing the overall scraping effect.

[0024] Working principle: When the polyimide film passes through the conveying roller 612, the second scraper 614 contacts the polyimide film, and the residual solvent on the surface of the polyimide film can be scraped off. When the thickness of the polyimide film changes, the second scraper 614 will drive the elastic telescopic rod 616 to slide inside the arc groove 617, and at the same time, the sliding stroke is limited to a certain extent by the third spring 618. When the first scraper 517 moves axially, it will drive the first push rod 620 to move axially. The first push rod 620 contacts the inner wall of the square groove 619 to make the second scraper 614 move axially. When the contact is broken, the second scraper 614 will reset, so that the axial movement of the second scraper 614 can be realized. The axial displacement makes the contact position of the second scraper 614 and the polyimide film constantly change, which reduces the accumulation of solvent in the same position and can continuously maintain the scraping ability of the second scraper 614, thereby enhancing the overall scraping effect.

[0025] See also Figure 1-9 On the basis of the above embodiment, in another embodiment of the present invention, a cleaning mechanism 7 is arranged inside the imidization equipment box 1, and the cleaning mechanism 7 comprises two fixed rods 711, and the two fixed rods 711 are fixedly connected inside the imidization equipment box 1, and the outer walls of the two fixed rods 711 are respectively fixedly connected with fixed sleeves 712, and a rectangular shaft 713 is rotatably connected between the two fixed sleeves 712, and the outer wall movable sleeve of the rectangular shaft 713 is provided with a fourth spring 718, and the outer wall movable sleeve of the rectangular shaft 713 is provided with a collecting box 714, and the left side of the collecting box 714 is fixedly connected with a third scraper 715, and the third scraper 715 is arranged at the lower right of the winding roller 4, and the third scraper 715 is arranged at the lower right of the winding roller 4 and is connected with the collecting box 714. The polyimide films are in conflict with each other, so the dust sticking on the polyimide film can be scraped into the inside of the collection box 714, thereby achieving the scraping and collection of the dust. The right side of the first scraper 517 is fixedly connected to the second push rod 716, and the right side of the collection box 714 is fixedly connected to the baffle 717. When the second push rod 716 moves axially, it will conflict with the baffle 717, thereby pushing the baffle 717 to move axially, thereby driving the collection box 714 to move axially. When the conflict is resolved, it will be reset under the action of the fourth spring 718, thereby driving the collection box 714 to shake, and the shaking can shake the dust on the third scraper 715 to fall into the inside of the collection box 714, thereby achieving the dust collection effect.

[0026] Working principle: When the polyimide film passes through the winding roller 4, the third scraper 715 is arranged at the lower right of the winding roller 4 and contacts the polyimide film, so the dust sticking on the polyimide film can be scraped off, thereby achieving the scraping and cleaning of the dust, and the second push rod 716 will contact the baffle 717 when moving axially, thereby pushing the baffle 717 to move axially, thereby driving the collection box 714 to move axially, and when it is out of contact, it will be reset under the action of the fourth spring 718, thereby driving the collection box 714 to shake, and the shaking can shake the dust on the third scraper 715 to fall into the collection box 714, thereby achieving the dust collection effect.

[0027] The present invention provides an imidization device for producing polyimide film. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. An imidization device for producing a polyimide film, comprising an imidization device box (1), characterized in that: A heating tube (2) is fixedly connected to the interior of the imidization equipment box (1), and an unwinding roller (3) and a winding roller (4) are fixedly installed inside the imidization equipment box (1); The interior of the imidization equipment box (1) is provided with a bubble elimination mechanism (5), the bubble elimination mechanism (5) comprising a motor (511), the motor (511) being fixedly connected to the back of the imidization equipment box (1), the output end of the motor (511) being fixedly connected to a bidirectional reciprocating screw (512) via a coupling, the bidirectional reciprocating screw (512) movably passing through the imidization equipment box (1) and extending toward the interior thereof, the outer wall of the bidirectional reciprocating screw (512) being threadedly connected to two thread sleeves (513) The imidization equipment box (1) is internally fixedly connected to a limit plate (514), the wire sleeve (513) is slidably connected to the bottom of the limit plate (514), a vertical rod (515) is movably penetrated inside the wire sleeve (513) and extends to the upper and lower sides thereof, the bottom of the vertical rod (515) is fixedly connected to a first fixed plate (516), the front of the first fixed plate (516) is fixedly connected to a first scraper (517), and the interior of the imidization equipment box (1) is fixedly connected to a top block (522).

2. The imidization equipment for producing polyimide film according to claim 1, characterized in that: The top of the vertical rod (515) is fixedly connected to a second fixing plate (518), and a first spring (519) is wound around the outer wall of the vertical rod (515). The first spring (519) is arranged between the bottom of the second fixing plate (518) and the top of the wire sleeve (513).

3. The imidization equipment for producing polyimide film according to claim 2, characterized in that: A resistance ball (520) is fixedly connected to the top of the second fixed plate (518), a connecting plate (521) is fixedly connected to the inner wall of the imidization equipment box (1), a wave groove is provided at the bottom of the connecting plate (521), and the resistance ball (520) and the wave groove are in mutual resistance.

4. The imidization equipment for producing polyimide film according to claim 3, characterized in that: The interior of the imidization equipment box (1) is provided with a solvent scraping mechanism (6), the solvent scraping mechanism (6) comprises two first vertical plates (611), the first vertical plates (611) are fixedly connected to the interior of the imidization equipment box (1), a conveying roller (612) is rotatably connected between the two first vertical plates (611), a first sliding rod (613) is rotatably connected inside the two first vertical plates (611), a second scraper (614) is movably sleeved on the outer wall of the first sliding rod (613), a second spring (615) is movably sleeved on the outer wall of the first sliding rod (613), and the second spring (615) is arranged between one end of the second scraper (614) and the front face of the first vertical plate (611).

5. The imidization equipment for producing polyimide film according to claim 4, characterized in that: One end of the second scraper (614) is fixedly connected to an elastic telescopic rod (616); an arc-shaped groove (617) is provided on the front of the first vertical plate (611); the interior of the arc-shaped groove (617) is fixedly connected to one end of a third spring (618); one end of the elastic telescopic rod (616) is movably sleeved inside the arc-shaped groove (617); and the outer wall of the elastic telescopic rod (616) is fixedly connected to the other end of the third spring (618).

6. The imidization equipment for producing polyimide film according to claim 5, characterized in that: The left side of the first scraper (517) is slidably connected to a first push rod (620), one end of the first push rod (620) being a telescopic end, and a square groove (619) is provided on the surface of the second scraper (614), the square groove (619) being sleeved on the outside of the telescopic end of the first push rod (620).

7. The imidization equipment for producing polyimide film according to claim 6, characterized in that: A cleaning mechanism (7) is arranged inside the imidization equipment box (1), and the cleaning mechanism (7) comprises two fixed rods (711), the two fixed rods (711) are fixedly connected inside the imidization equipment box (1), the outer walls of the two fixed rods (711) are respectively fixedly connected with fixed sleeves (712), a rectangular shaft (713) is rotatably connected between the two fixed sleeves (712), a fourth spring (718) is arranged on the outer wall movable sleeve of the rectangular shaft (713), a collecting box (714) is arranged on the outer wall movable sleeve of the rectangular shaft (713), a third scraper (715) is fixedly connected to the left side of the collecting box (714), and the third scraper (715) is arranged at the lower right of the winding roller (4).

8. The imidization equipment for producing polyimide film according to claim 7, characterized in that: A second push rod (716) is fixedly connected to the right side of the first scraper (517), and a baffle (717) is fixedly connected to the right side of the collection box (714).

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