Carbon fiber heating device for polyimide film production

Abstract

A carbon fiber heating device for polyimide film production relates to the technical field of heating devices and comprises a stretcher, heating components are horizontally arranged in upper and lower areas of a film of the stretcher respectively, and each heating component comprises a plurality of carbon fiber heating pipes arranged in parallel along the movement direction of the film. The distance between every two adjacent carbon fiber heating pipes can be adjusted. The utility model solves the problems that the heating of the polyimide film on a stretching machine is limited by the influence of a heating structure, so that the heating of the surface layer and the central layer is not uniform, the deformation of the polyimide film is not consistent, and the product quality is influenced in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of heating devices, in particular to a carbon fiber heating device for polyimide film production. Background Art

[0002] Polyimide refers to a class of polymers containing imide rings in the main chain. It is one of the organic polymer materials with the best comprehensive performance. It is currently widely used in aerospace, nanotechnology, liquid crystals, separation membranes, lasers and other fields. Among them, polyimide film is one of the earliest application fields of polyimide. It has a series of properties such as excellent heat resistance and good chemical stability. It is often used for slot insulation of motors and cable wrapping materials. Film cutting machines are often used in the processing of polyimide films.

[0003] In the prior art, polyimide film is formed by casting and stretching a polyimide solution. After casting and stretching, the polyimide film on the conveyor steel belt needs to be cured and dried by a heating device. In the prior art, the heating device used directly transfers heat flow into the heating box. Since the volume of the commonly set heating box is large, the heating effect of the direct heat flow method is not ideal.

[0004] A patent with publication number CN219667229U is disclosed in the prior art. The solution includes a workbench and a box body. A mold pushing device is provided at the upper end of the workbench. The mold pushing device includes a first motor. The other end of the second connecting rod is movably connected to the third connecting rod through a pin shaft. The third connecting rod passes through the limit plate. The other end of the third connecting rod is fixedly connected to the push plate. Through the cooperation of the workbench, the box body, the mold pushing device and the clamping heating device, the first motor drives the first connecting rod to rotate, the first connecting rod drives the internal gear to rotate, the fourth connecting rod drives the fifth connecting rod to rotate, the fifth connecting rod drives the sixth connecting rod to rotate, and at the same time, the fifth connecting rod drives the seventh connecting rod to rotate, the heating plate starts to heat up and dries the polyimide liquid in the mold. This method can avoid the hot air during drying from blowing away the polyimide liquid, making it easier to form, improving production quality, and also increasing the drying speed.

[0005] The existing devices including the above patents have gradually exposed the shortcomings of the existing technology as they are used, mainly in the following aspects:

[0006] First, the existing polyimide film is heated on a stretching machine, which is limited by the influence of the heating structure, resulting in uneven heating of the surface layer and the center layer, causing inconsistent deformation of the polyimide film and affecting product quality.

[0007] Second, the spacing of the existing heating structure is fixed and cannot be adjusted according to the different thicknesses of the polyimide film, resulting in a limited scope of use.

[0008] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Utility Model Content

[0009] In response to the defects in the existing technology, the utility model provides a carbon fiber heating device for the production of polyimide film, which is used to solve the problem that in traditional technology, the polyimide film is heated on a stretching machine, which is limited by the influence of the heating structure, resulting in uneven heating of the surface layer and the center layer, causing inconsistent deformation of the polyimide film and affecting product quality.

[0010] To achieve the above purpose, the present invention provides the following technical solutions:

[0011] A carbon fiber heating device for polyimide film production includes a stretching machine, wherein the stretching machine is horizontally provided with heating components in the upper and lower areas of the film, each of the heating components includes a plurality of carbon fiber heating tubes arranged in parallel along the direction of film movement, and the spacing between adjacent carbon fiber heating tubes can be adjusted.

[0012] As an optimized solution, the heating assembly further includes two connecting pieces arranged in parallel, and both ends of the carbon fiber heating tube are connected to the connecting pieces via connecting seats respectively.

[0013] As an optimized solution, a rectangular sliding hole is opened on the connecting piece in the horizontal direction, and the connecting seat is slidably installed in the rectangular sliding hole.

[0014] As an optimized solution, the upper end of the connecting piece is provided with a long strip sliding hole connected to the rectangular sliding hole, and the upper end of the connecting seat is provided with a locking thread groove, and a locking knob is threadedly connected to the locking thread groove. The handle end of the locking knob passes through the long strip sliding hole and abuts against the upper end of the connecting piece.

[0015] As an optimized solution, the connecting seat is provided with an insertion slot, the end of the carbon fiber is inserted into the insertion slot, and the connecting wire on the end of the carbon fiber passes through the insertion slot and extends to the outside.

[0016] As an optimized solution, a spring conductive probe is provided at the lower end of the connecting seat, and a conductive sheet is fixed to the lower edge of the rectangular sliding hole along the sliding direction of the connecting seat, and the contact end of the spring conductive probe rubs against the upper surface of the conductive sheet.

[0017] As an optimized solution, the electrical connection end of the spring conductive probe is connected to a first electrical connection post extending to one side of the connecting piece, and the first electrical connection post is connected to the electrical connection wire on the end of the carbon fiber by a wire.

[0018] As an optimized solution, the conductive sheet is connected to a second electrical post extending to one side of the connecting sheet.

[0019] As an optimized solution, the second power post is connected to a power line.

[0020] As an optimized solution, a plurality of fixing holes are arranged in parallel in the area below the rectangular sliding hole of the connecting piece, bolts are inserted into the fixing holes, and the connecting piece is fixed to the frame of the stretching machine by means of the bolts.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] By arranging two heating components in parallel from top to bottom on the stretching machine and passing the film along the area between the two heating components, the heating uniformity of the film can be greatly improved, so that the surface layer and the center layer are heated evenly, ensuring that the deformation of the polyimide film is not uniform, and improving product quality;

[0023] The ends of the carbon fiber heating tubes are installed on the connecting seat. By sliding the connecting seat, the spacing of the carbon fiber heating tubes can be adjusted, so that the heating of films of different thicknesses can be achieved while ensuring that the power of the carbon fiber heating tubes remains unchanged.

[0024] After adjusting the spacing of the carbon fiber heating tubes, tighten the locking knob so that the handle end passes through and abuts against the upper end of the connecting piece to stop the connecting seat. After separating the locking knob from the connecting seat, the connecting seat can be taken out of the rectangular sliding hole, making it easy to install and disassemble according to the number of carbon fiber heating tubes.

[0025] The carbon fiber heating tubes are powered by conductive sheets and spring conductive probes, making the structure simpler and overcoming the problem of complex circuits caused by an excessive number of carbon fiber heating tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0027] Figure 1 It is a structural diagram of the utility model;

[0028] Figure 2 This is a structural diagram of the arrangement of the carbon fiber heating tubes of the utility model;

[0029] Figure 3 This is a structural diagram of the connecting piece of the utility model.

[0030] In the figure: 1-stretching machine; 2-heating component; 3-membrane; 4-connecting plate; 5-connecting seat; 6-carbon fiber heating tube; 7-long sliding hole; 8-locking knob; 9-locking thread groove; 10-connecting wire; 11-spring conductive probe; 12-first connecting post; 13-conducting wire; 14-conductive plate; 15-second connecting post; 16-fixing hole. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0032] like Figures 1 to 3 As shown, a carbon fiber heating device for polyimide film production includes a stretching machine 1, and the stretching machine 1 is horizontally provided with heating components 2 in the upper and lower areas of the film 3. Each heating component 2 includes a plurality of carbon fiber heating tubes 6 arranged in parallel along the movement direction of the film 3, and the spacing between adjacent carbon fiber heating tubes 6 can be adjusted.

[0033] The heating assembly 2 further includes two connecting pieces 4 arranged in parallel, and both ends of the carbon fiber heating tube 6 are connected to the connecting pieces 4 via connecting seats 5 respectively.

[0034] A rectangular sliding hole is opened on the connecting piece 4 along the horizontal direction, and the connecting seat 5 is slidably installed in the rectangular sliding hole.

[0035] The upper end of the connecting piece 4 is provided with a long strip sliding hole 7 connected to the rectangular sliding hole, and the upper end of the connecting seat 5 is provided with a locking thread groove. The locking thread groove 9 is internally threaded with a locking knob 8. The handle end of the locking knob 8 passes through the long strip sliding hole 7 and abuts against the upper end of the connecting piece 4.

[0036] The connecting seat 5 is provided with an inserting slot, the end of the carbon fiber is inserted into the inserting slot, and the connecting wire 10 on the end of the carbon fiber passes through the inserting slot and extends to the outside.

[0037] A spring conductive probe 11 is provided at the lower end of the connecting seat 5 . A conductive sheet 14 is fixed to the lower edge of the rectangular sliding hole along the sliding direction of the connecting seat 5 . The contact end of the spring conductive probe 11 frictionally abuts against the upper surface of the conductive sheet 14 .

[0038] The electrical connection end of the spring conductive probe 11 is connected to a first electrical connection post 12 extending to one side of the connecting piece 4 . The first electrical connection post 12 is connected to the electrical connection wire 10 on the end of the carbon fiber via a wire 13 .

[0039] The conductive sheet 14 is connected to a second electrical post 15 extending to one side of the connecting sheet 4 .

[0040] The second power terminal 15 is connected to a power line.

[0041] A plurality of fixing holes 16 are arranged in parallel in the area of ​​the connecting piece 4 below the rectangular sliding hole. Bolts are inserted into the fixing holes 16 , and the connecting piece 4 is fixed to the frame of the stretching machine 1 by means of the bolts.

[0042] The carbon fiber heating tube 6 is 200 mm away from the three surfaces of the membrane.

[0043] The working principle of this device is:

[0044] By arranging two heating assemblies 2 side by side from top to bottom on the stretching machine 1 and passing the film 3 along the area between the two heating assemblies 2, the heating uniformity of the film 3 can be greatly improved, so that the surface layer and the center layer are heated evenly, ensuring that the deformation of the polyimide film 3 is not uniform, and improving product quality;

[0045] The ends of the carbon fiber heating tubes 6 are mounted on the connecting base 5. By sliding the connecting base 5, the spacing of the carbon fiber heating tubes 6 can be adjusted, thereby achieving heating of membranes 3 of different thicknesses while ensuring that the power of the carbon fiber heating tubes 6 remains unchanged.

[0046] After adjusting the spacing between the carbon fiber heating tubes 6, tighten the locking knob 8 so that the handle end thereof passes through and abuts against the upper end of the connecting piece 4, thereby stopping the connecting seat 5. After separating the locking knob 8 from the connecting seat 5, the connecting seat 5 can be taken out of the rectangular sliding hole, thereby facilitating assembly and disassembly according to the number of carbon fiber heating tubes 6.

[0047] The conductive sheet 14 and the spring conductive probe 11 are provided to power the carbon fiber heating tube 6 , thereby simplifying the structure and overcoming the problem of complicated circuits caused by an excessive number of carbon fiber heating tubes 6 .

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A carbon fiber heating device for polyimide film production, characterized by: The invention comprises a stretching machine (1), wherein the stretching machine (1) is provided with heating components (2) horizontally in the upper and lower regions of the film (3), and each heating component (2) comprises a plurality of carbon fiber heating tubes (6) arranged in parallel along the moving direction of the film (3), and the spacing between adjacent carbon fiber heating tubes (6) can be adjusted.

2. The carbon fiber heating device for polyimide film production according to claim 1, characterized in that: The heating assembly (2) further comprises two connecting pieces (4) arranged in parallel, and both ends of the carbon fiber heating tube (6) are connected to the connecting pieces (4) via connecting seats (5) respectively.

3. The carbon fiber heating device for polyimide film production according to claim 2, characterized in that: A rectangular sliding hole is provided on the connecting piece (4) in the horizontal direction, and the connecting seat (5) is slidably installed in the rectangular sliding hole.

4. The carbon fiber heating device for polyimide film production according to claim 3, characterized in that: The upper end of the connecting piece (4) is provided with a long strip sliding hole (7) connected to the rectangular sliding hole, the upper end of the connecting seat (5) is provided with a locking thread groove, the locking thread groove (9) is internally threadedly connected to a locking knob (8), the handle end of the locking knob (8) passes through the long strip sliding hole (7) and abuts against the upper end of the connecting piece (4).

5. The carbon fiber heating device for polyimide film production according to claim 4, characterized in that: The connecting seat (5) is provided with an insertion slot, the end of the carbon fiber is inserted into the insertion slot, and the connecting wire (10) on the end of the carbon fiber passes through the insertion slot and extends to the outside.

6. The carbon fiber heating device for polyimide film production according to claim 5, characterized in that: A spring conductive probe (11) is provided at the lower end of the connecting seat (5); a conductive sheet (14) is fixedly connected to the lower edge of the rectangular sliding hole along the sliding direction of the connecting seat (5); and the contact end of the spring conductive probe (11) is frictionally abutted against the upper surface of the conductive sheet (14).

7. The carbon fiber heating device for polyimide film production according to claim 6, characterized in that: The power connection end of the spring conductive probe (11) is connected to a first power connection post (12) extending to one side of the connecting piece (4), and the first power connection post (12) is connected to the power connection wire (10) on the end of the carbon fiber by a wire (13).

8. The carbon fiber heating device for polyimide film production according to claim 7, characterized in that: The conductive sheet (14) is connected to a second electrical connection post (15) extending to one side of the connecting sheet (4).

9. The carbon fiber heating device for polyimide film production according to claim 8, characterized in that: The second power connection post (15) is connected to a power line.

10. The carbon fiber heating device for polyimide film production according to claim 9, characterized in that: The connecting piece (4) is provided with a plurality of fixing holes (16) in parallel in the area below the rectangular sliding hole. Bolts are inserted into the fixing holes (16), and the connecting piece (4) is fixed to the frame of the stretching machine (1) by means of the bolts.

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