A thin film heating device applying an infrared ray assisted heating device

Abstract

The present invention discloses an infrared-assisted heating device and a film heating device. Among them, an infrared-assisted heating device includes a first frame, on which a vertical movement mechanism is provided. The vertical movement mechanism is drivingly connected to a heating bracket, and the vertical movement mechanism drives the heating bracket to move up and down. The heating bracket is provided with a first infrared heater and a second infrared heater. The first infrared heater is used to heat the edge of the film, and the second infrared heater is used to heat the middle of the film. The present invention also provides a film heating device applying the infrared-assisted heating device. The present invention provides an auxiliary heating device and a film heating device that can be used for preheating before longitudinal stretching of the film.

Description

Technical Field

[0001] The present invention relates to the field of longitudinal stretching of thin films, and particularly to a thin film heating device applying an infrared auxiliary heating device. Background Art

[0002] When a thin film is longitudinally stretched, it is necessary to ensure that the entire thin film can be fully heated to a stretchable state. If the entire thin film fails to be heated to the stretchable state, some irregular shrinkages are likely to occur during the stretching of the thin film. For example, in relatively thick films such as BOPP films, the heat dissipation at the edges is relatively fast. Moreover, the heating mode of the preheating roller is generally to introduce some relatively high-temperature liquids, such as hot oil, from one end of the preheating roller to the other end, and the thin film is preheated by heat transfer. Then, during the heat transfer process, there will inevitably be a temperature loss when the liquid moves from one end of the preheating roller to the other end, and the temperature dissipation rate at the edges of the preheating roller itself is also relatively fast. Therefore, the preheating of the thin film may be uneven due to the temperature difference at both ends of the preheating roller. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to solve at least one of the above-mentioned problems, and to provide an auxiliary heating device that can be used for preheating before the longitudinal stretching of a thin film.

[0004] The solution of the present invention to solve its technical problem is:

[0005] A thin film heating device applying an infrared auxiliary heating device includes a first frame. A vertical movement mechanism is provided on the first frame. The vertical movement mechanism is drivingly connected to a heating bracket. The vertical movement mechanism drives the heating bracket to move up and down. A first infrared heater and a second infrared heater are provided on the heating bracket. The first infrared heater is used to heat the edge of the thin film, and the second infrared heater is used to heat the middle of the thin film.

[0006] As a further improvement of the above technical solution, the first infrared heater includes a first bracket and a first heater body fixed on the first bracket. The first bracket is detachably connected to the heating bracket through a plum blossom knob.

[0007] As a further improvement of the above technical solution, the second infrared heater includes a second bracket and a second heater body fixed on the second bracket. The second bracket is detachably connected to the heating bracket through a plum blossom knob.

[0008] As a further improvement of the above technical solution, the vertical movement mechanism includes a fixed seat and a slide cylinder provided on the fixed seat. The fixed seat is fixedly connected to the first frame, and the slide cylinder drives the heating bracket to move up and down.

[0009] As a further improvement of the above technical solution, a buffer is provided on the slide cylinder, and the buffer is arranged at the lower end of the stroke of the slide of the slide cylinder, and the buffer is used to buffer the slide of the slide cylinder.

[0010] As a further improvement of the above technical solution, a limit block is provided on the fixed seat, and the limit block is arranged at the upper end of the stroke of the slide of the slide cylinder, and the limit block is used to limit the slide of the slide cylinder.

[0011] As a further improvement of the above technical solution, the heating bracket includes a horizontal plate, a vertical plate, and a connecting plate. The horizontal plate is perpendicular to and fixedly connected to the vertical plate. The connecting plate fixedly connects the horizontal plate and the vertical plate. The connecting plate is perpendicular to the horizontal plate and perpendicular to the vertical plate. The connecting plate is fixedly connected to the slide of the slide cylinder, and the first infrared heater and the second infrared heater are respectively arranged on the top surface of the horizontal plate.

[0012] The present invention also provides a film heating device applying the infrared ray assisted heating device described above, which is characterized in that: it includes a second frame, and a front preheating roller and a middle preheating roller arranged in the front-rear direction are provided on the second frame. The front preheating roller and the middle preheating roller are parallel to each other, and the front preheating roller and the middle preheating roller are respectively used for preheating the film sheet material bypassing them. The film sheet material bypasses the lower side of the front preheating roller and the upper side of the middle preheating roller in sequence. The first infrared heater is arranged below the film sheet material bypassing the lower side of the front preheating roller, and the first infrared heater is arranged upward and faces one side edge of the film sheet material. The second infrared heater is arranged below the film sheet material between the front preheating roller and the middle preheating roller, and the second infrared heater is arranged obliquely upward and faces the film sheet material between the front preheating roller and the middle preheating roller.

[0013] As a further improvement of the above technical solution, two first frames are provided, and the two first frames are respectively fixedly connected to the second frame. The up-and-down movement mechanism is provided on each first frame, and each up-and-down movement mechanism drives a heating bracket to move up and down. The first infrared heater and the second infrared heater are arranged on each heating bracket, and the two first infrared heaters respectively face the two side edges of the film sheet material.

[0014] As a further improvement of the above technical solution, a post-preheating roller is provided on the second rack. The post-preheating roller is parallel to the middle preheating roller. The film sheet sequentially bypasses the lower side of the front preheating roller, the upper side of the middle preheating roller, and the lower side of the post-preheating roller. The post-preheating roller and the front preheating roller are mirror images of each other. A third infrared heater and a fourth infrared heater are provided on the heating bracket. The third infrared heater and the first infrared heater are mirror images of each other in a one-to-one correspondence. The second infrared heater and the fourth infrared heater are mirror images of each other in a one-to-one correspondence.

[0015] The beneficial effects of the present invention are as follows: During use, the first infrared heater and the second infrared heater are used to heat the film sheet. The first infrared heater is used to heat both ends of the film sheet to prevent the temperature at both ends of the film sheet from dissipating too quickly. The second infrared heater is used to heat the middle part of the film sheet that has left the preheating roller, so that the film sheet maintains its temperature when it leaves the preheating roller, reducing the shrinkage of the film sheet. The up-and-down movement mechanism drives the heating bracket to move up and down, thereby driving the first infrared heater and the second infrared heater to move up and down. Thus, the user can drive the first infrared heater and the second infrared heater to approach or move away from the film sheet to be heated through the up-and-down movement mechanism, thereby controlling the power of the auxiliary heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, not all embodiments. Without creative efforts, those skilled in the art can also obtain other design solutions and drawings based on these drawings.

[0017] FIG. 1 is a side view of the infrared auxiliary heating device of the present invention;

[0018] FIG. 2 is a front view of the infrared auxiliary heating device of the present invention;

[0019] FIG. 3 is a front view of the film heating device of the present invention;

[0020] FIG. 4 is a side view of the film heating device of the present invention.

[0021] In the drawings: 1 - first rack, 2 - first heater body, 3 - second heater body, 4 - first bracket, 5 - second bracket, 6 - plum blossom knob, 7 - fixing seat, 8 - slide cylinder, 9 - buffer, 10 - limit block, 11 - second rack, 12 - front preheating roller, 13 - middle preheating roller, 14 - post-preheating roller, 15 - film sheet, 16 - third infrared heater, 17 - fourth infrared heater,

[0022] 18 - First infrared heater, 19 - Second infrared heater, 20 - Heating bracket, 21 - Horizontal plate, 22 - Vertical plate, 23 - Connecting plate. Detailed implementation mode

[0023] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and the drawings to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts all belong to the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer only to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the present invention can be combined interactively without conflicting with each other.

[0024] Referring to FIGS. 1 - 4, a film heating device applying an infrared ray auxiliary heating device includes a first frame 1. A vertical movement mechanism is provided on the first frame 1. The vertical movement mechanism is drivingly connected to a heating bracket 20. The vertical movement mechanism drives the heating bracket 20 to move up and down. A first infrared heater 18 and a second infrared heater 19 are provided on the heating bracket 20. The first infrared heater 18 is used to heat the edge of the film, and the second infrared heater 19 is used to heat the middle of the film.

[0025] From the above, when in use, the first infrared heater 18 and the second infrared heater 19 are used to heat the film sheet 15. The first infrared heater 18 is used to heat both ends of the film sheet 15 to prevent the temperature at both ends of the film sheet 15 from dissipating too quickly. The second infrared heater 19 is used to heat the middle of the film sheet 15 that leaves the preheating roller, so that the film sheet 15 maintains its temperature when leaving the preheating roller, reducing the shrinkage of the film sheet 15. The vertical movement mechanism drives the heating bracket 20 to move up and down, thereby driving the first infrared heater 18 and the second infrared heater 19 to move up and down. Thus, the user can drive the first infrared heater 18 and the second infrared heater 19 to approach or move away from the film sheet 15 to be heated through the vertical movement mechanism, thereby controlling the power of the auxiliary heating.

[0026] Further as a preferred embodiment, the first infrared heater 18 includes a first bracket 4 and a first heater body 2 fixed on the first bracket 4. The first bracket 4 is detachably connected to the heating bracket 20 through a plum blossom knob 6. This structure is simple and convenient to set up. With this structure, the user can conveniently install or disassemble the first bracket 4.

[0027] Further as a preferred embodiment, the second infrared heater 19 includes a second bracket 5 and a second heater body 3 fixed on the second bracket 5. The second bracket 5 is detachably connected to the heating bracket 20 through a plum blossom knob 6. This structure is simple and convenient to set up. With this structure, the user can conveniently install or disassemble the second bracket 5.

[0028] Further as a preferred embodiment, the vertical movement mechanism includes a fixed seat 7 and a slide table cylinder 8 arranged on the fixed seat 7. The fixed seat 7 is fixedly connected to the first frame 1, and the slide table cylinder 8 drives the heating bracket 20 to move up and down. This structure is simple and convenient to set up. The fixed seat 7 can be used to fix the slide table cylinder 8. With the setting of the slide table cylinder 8, the heating bracket 20 can be driven to move up and down.

[0029] Further as a preferred embodiment, a buffer 9 is provided on the slide table cylinder 8. The buffer 9 is arranged at the lower end of the stroke of the slide table of the slide table cylinder 8, and the buffer 9 is used to buffer the slide table of the slide table cylinder 8. This structure is simple and convenient to set up. With this structure, the slide table cylinder 8 can be buffered before the slide table moves down to the end of the stroke.

[0030] Further as a preferred embodiment, a limit block 10 is provided on the fixed seat 7. The limit block 10 is arranged at the upper end of the stroke of the slide table of the slide table cylinder 8, and the limit block 10 is used to limit the slide table of the slide table cylinder 8. This structure is simple and convenient to set up. The limit block 10 can be used to limit the slide table on the slide table cylinder 8 to prevent the slide table from moving upward excessively under the action of inertia and disengaging from the slide table cylinder 8.

[0031] As a further preferred embodiment, the heating bracket 20 includes a horizontal plate 21, a vertical plate 22, and a connecting plate 23. The horizontal plate 21 is perpendicular to and fixedly connected to the vertical plate 22. The connecting plate 23 fixedly connects the horizontal plate 21 and the vertical plate 22. The connecting plate 23 is perpendicular to the horizontal plate 21 and perpendicular to the vertical plate 22. The connecting plate 23 is fixedly connected to the slide of the slide cylinder 8. The first infrared heater 18 and the second infrared heater 19 are respectively arranged on the top surface of the horizontal plate 21.

[0032] As a further preferred embodiment, the second frame 11 is provided with a front preheating roller 12 and a middle preheating roller 13 arranged in the front-rear direction. The front preheating roller 12 and the middle preheating roller 13 are parallel to each other. The front preheating roller 12 and the middle preheating roller 13 are respectively used for preheating the bypassed film sheet 15. The film sheet 15 bypasses the lower side of the front preheating roller 12 and the upper side of the middle preheating roller 13 in sequence. The first infrared heater 18 is arranged below the film sheet 15 bypassing the lower side of the front preheating roller 12. The first infrared heater 18 is arranged upward and faces one side edge of the film sheet 15. The second infrared heater 19 is arranged below the film sheet 15 between the front preheating roller 12 and the middle preheating roller 13. The second infrared heater 19 is arranged obliquely upward and faces the film sheet 15 between the front preheating roller 12 and the middle preheating roller 13. This structure is simple and convenient to set up. Through the setting of this structure, the film sheet 15 can be conveniently compensated for heating. The first infrared heater 18 is used to heat the film sheet 15 below the end of the front preheating roller 12, reducing the heat loss at the end of the film sheet 15 and avoiding relatively serious lateral shrinkage of the film sheet 15 in the subsequent stretching process. Through the setting of the second infrared heater 19, the film sheet 15 can maintain heat during the moving process.

[0033] In addition, the first infrared heater 18 and the second infrared heater 19 can heat thick sheets, and their heating penetration is good, enabling good internal heating of the film.

[0034] Further as a preferred embodiment, two first frames 1 are provided. The two first frames 1 are respectively fixedly connected to the second frame 11. The vertical movement mechanism is provided on each first frame 1. Each vertical movement mechanism drives a heating bracket 20 to move up and down. The first infrared heater 18 and the second infrared heater 19 are arranged on each heating bracket 20. The two first infrared heaters 18 respectively face the two side edges of the thin film sheet 15. This structure is simple and convenient to set. By adopting two first infrared heaters 18, the two side edges of the thin film sheet 15 can be heated. In actual use, the first infrared heater 18 can be used to heat the thin film sheet 15 below both ends of the front preheating roller 12, so as to avoid a large temperature difference between the edge and the middle of the thin film sheet 15.

[0035] Further as a preferred embodiment, a rear preheating roller 14 is provided on the second frame 11. The rear preheating roller 14 is parallel to the middle preheating roller 13. The thin film sheet 15 sequentially bypasses the lower side of the front preheating roller 12, the upper side of the middle preheating roller 13, and the lower side of the rear preheating roller 14. The rear preheating roller 14 and the front preheating roller 12 are arranged as mirrors of each other. The third infrared heater 16 and the fourth infrared heater 17 are provided on the heating bracket 20. The third infrared heater 16 and the first infrared heater 18 are arranged as mirrors of each other in a one-to-one correspondence. The second infrared heater 19 and the fourth infrared heater 17 are arranged as mirrors of each other in a one-to-one correspondence. This structure is simple and convenient to set. By setting the rear preheating roller 14, the thin film sheet 15 can be further heated sufficiently. The rear preheating roller 14, the third infrared heater 16, and the fourth infrared heater 17 are respectively arranged as mirrors of the front preheating roller 12, the first infrared heater 18, and the second infrared heater 19 in a one-to-one correspondence. Its structure is compact and stable, and good heating of the thin film sheet 15 can be achieved.

[0036] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art can also make various equivalent modifications or substitutions without departing from the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A thin-film heating device using an infrared-assisted heating device, characterized in that: The infrared auxiliary heating device includes a first frame (1), on which there is a vertical movement mechanism. The vertical movement mechanism is drivingly connected to a heating bracket (20), and the vertical movement mechanism drives the heating bracket (20) to move up and down. The heating bracket (20) is provided with a first infrared heater (18) and a second infrared heater (19). The number of the first infrared heaters (18) is two, and the two first infrared heaters (18) respectively face the two side edges of the film sheet (15). The second infrared heater (19) is used to heat the middle part of the film. The film heating device includes a second frame (11), on which there are a front preheating roller (12) and a middle preheating roller (13) arranged in the front-rear direction. The front preheating roller (12) and the middle preheating roller (13) are parallel to each other. The front preheating roller (12) and the middle preheating roller (13) are respectively used to preheat the film sheet (15) bypassing them. The film sheet (15) bypasses the lower side of the front preheating roller (12) and the upper side of the middle preheating roller (13) in sequence. The first infrared heater (18) is arranged below the film sheet (15) bypassing the lower side of the front preheating roller (12), and the first infrared heater (18) is arranged upward and faces one side edge of the film sheet (15). The second infrared heater (19) is arranged below the film sheet (15) between the front preheating roller (12) and the middle preheating roller (13), and the second infrared heater (19) is arranged obliquely upward and faces the film sheet (15) between the front preheating roller (12) and the middle preheating roller (13).

2. The thin film heating device applying an infrared ray assisted heating device according to claim 1, characterized in that: The first infrared heater (18) includes a first bracket (4) and a first heater body (2) fixed on the first bracket (4). The first bracket (4) is detachably connected to the heating bracket (20) through a plum blossom knob (6).

3. The thin-film heating device using an infrared ray-assisted heating device according to claim 1, characterized in that: The second infrared heater (19) includes a second bracket (5) and a second heater body (3) fixed on the second bracket (5). The second bracket (5) is detachably connected to the heating bracket (20) through a plum blossom knob (6).

4. A film heating device using an infrared ray assisted heating device according to claim 1, characterized in that: The vertical movement mechanism includes a fixed seat (7) and a slide table cylinder (8) arranged on the fixed seat (7). The fixed seat (7) is fixedly connected to the first frame (1), and the slide table cylinder (8) drives the heating bracket (20) to move up and down.

5. The thin film heating device using an infrared ray assisted heating device according to claim 4, wherein: A buffer (9) is arranged on the slide table cylinder (8), and the buffer (9) is arranged at the lower end of the stroke of the slide table of the slide table cylinder (8). The buffer (9) is used to buffer the slide table of the slide table cylinder (8).

6. The thin film heating device using an infrared ray assisted heating device according to claim 4, characterized in that: A limit block (10) is arranged on the fixed seat (7), and the limit block (10) is arranged at the upper end of the stroke of the slide table of the slide table cylinder (8). The limit block (10) is used to limit the slide table of the slide table cylinder (8).

7. A film heating device applying an infrared ray assisted heating device according to claim 4, characterized in that: The heating bracket (20) includes a horizontal plate (21), a vertical plate (22), and a connecting plate (23). The horizontal plate (21) is perpendicular to and fixedly connected to the vertical plate (22). The connecting plate (23) fixedly connects the horizontal plate (21) and the vertical plate (22). The connecting plate (23) is perpendicular to the horizontal plate (21) and perpendicular to the vertical plate (22). The connecting plate (23) is fixedly connected to the slide of the slide cylinder (8). The first infrared heater (18) and the second infrared heater (19) are respectively arranged on the top surface of the horizontal plate (21).

8. The thin film heating device with an infrared ray assisted heating device according to claim 1, wherein: Two of the first frames (1) are provided. The two first frames (1) are respectively fixedly connected to the second frame (11). Each first frame (1) is provided with the up-and-down movement mechanism. Each up-and-down movement mechanism drives a heating bracket (20) to move up and down. Each heating bracket (20) is provided with the first infrared heater (18) and the second infrared heater (19).

9. A thin-film heating device using an infrared ray-assisted heating device according to claim 8, characterized in that: A post-preheating roller (14) is provided on the second frame (11). The post-preheating roller (14) is parallel to the middle preheating roller (13). The thin film sheet (15) sequentially bypasses the lower side of the front preheating roller (12), the upper side of the middle preheating roller (13), and the lower side of the post-preheating roller (14). The post-preheating roller (14) and the front preheating roller (12) are arranged as mirror images of each other. A third infrared heater (16) and a fourth infrared heater (17) are provided on the heating bracket (20). The third infrared heater (16) and the first infrared heater (18) are arranged as mirror images of each other in a one-to-one correspondence. The second infrared heater (19) and the fourth infrared heater (17) are arranged as mirror images of each other in a one-to-one correspondence.

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