Sealing structure of TDO low-temperature heat preservation shell of film machine

Abstract

The utility model provides a sealing structure of a TDO low-temperature heat preservation shell of a film machine, and relates to the technical field of heat preservation shells, the sealing structure comprises a base, a sealing groove is formed in the position, close to the edge of the outer surface, of the top of the base, and a heat preservation shell is arranged above the base. The connection between the heat preservation shell and the base is in a sealed state, the ends of the film body are all located in the opening, the film body is located between the two sealing strips in the opening, and when cold air is injected into the heat preservation shell, the cold air can be blown outwards from the portions where the film body and the sealing strips are attached to each other; and the blown cooling air flows outwards along the film body at a certain distance outside the heat preservation shell, and the cooling of the film body by the cooling air during flowing is gradually weakened, so that the film body transits the temperature change when being conveyed out of the heat preservation shell, and the phenomenon that the outer surface of the film body is wrinkled when the temperature changes sharply is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation shells, in particular to a sealing structure of a TDO low-temperature thermal insulation shell of a thin film machine. Background Art

[0002] Film is a thin, soft, transparent sheet made of plastic, adhesive, rubber or other materials. During film production, a film stretching machine is usually used to stretch the film raw material through the TDO biaxial stretching process to obtain a preformed film, which is then stored in a heat-insulated manner.

[0003] Currently, when a low-temperature insulation shell is used to store or transfer films formed after the TDO biaxial stretching process, the connection between the film and the insulation shell is mostly sealed when the film passes through the insulation shell, and the thickness of the film is relatively thin. This causes the film, after being cooled by the low-temperature shell, to instantly undergo large thermal expansion and contraction changes after being transported out of the low-temperature shell and contacting the external hot air, which easily causes wrinkles on the outer surface of the film. Summary of the Invention

[0004] In order to solve the existing technical problems, the utility model provides a sealing structure of a low-temperature heat-insulating shell of a thin film machine TDO.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] A sealing structure for a low-temperature thermal insulation shell of a thin film machine TDO includes a base, a sealing groove is provided on the top of the base near the edge of the outer surface, an insulation shell is arranged above the base, a sealing frame is fixed to the bottom of the insulation shell, and the sealing frame is engaged with the inside of the sealing groove, openings are provided on the outer surfaces of both sides of the insulation shell near the top edge, and sealing strips are fixed to the inner top and bottom surfaces of the two openings, a film body is provided inside the insulation shell, the ends of the film body are both located inside the openings, and the film body is located between the two sealing strips inside the opening, and two pads are fixed to the bottom of the base.

[0007] Optionally, a roller is rotatably connected to the interior of the heat-insulating shell, and the outer surface of the roller is in contact with the outer surface of the film body.

[0008] Optionally, the front side of the heat-insulating shell is rotatably connected to a turntable, and the rear side of the turntable is fixed to one end of the drum.

[0009] Optionally, a rocker is provided on the outer surface of the turntable near the edge, and a positioning hole is provided on the front side of the heat-insulating shell, and the positioning hole is located directly behind the rocker.

[0010] Optionally, a limiting groove is provided on the inner bottom surface of the sealing groove, a limiting frame is fixed to the bottom of the sealing frame, and the limiting frame is engaged in the inner part of the limiting groove.

[0011] Optionally, an arc-shaped opening is opened on the outer surface of the sealing frame, and hollow rubber tubes are fixed to the inner walls of the four sides of the sealing groove. The four hollow rubber tubes are interconnected and are sealed and clamped inside the arc-shaped opening.

[0012] Optionally, an inner cavity is opened inside the base, and a plurality of air outlets penetrating into the inner cavity are opened at equal intervals on the top of the base. Two inner flow channels are opened inside the base, and one end of the two inner flow channels penetrates into the inner cavity. An air inlet pipe is fixed to the rear side of the base, and the other ends of the two inner flow channels are connected to the inside of the air inlet pipe.

[0013] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0014] 1. In the present invention, the sealing frame is engaged with the inside of the sealing groove, so that the connection between the insulation shell and the base is in a sealed state, the ends of the film body are both located inside the opening, and the film body is located between the two sealing strips inside the opening, so that when cold air is injected into the insulation shell, the cold air can be blown to the outside from the part where the film body and the sealing strip are in contact with each other.

[0015] 2. In the present invention, the hollow rubber tube is sealed and fitted inside the arc-shaped opening, which can enhance the sealing performance of the joint between the sealing groove and the sealing frame. When cold air is supplied to the interior of the insulation shell, the cold air enters the inner flow channel through the air inlet pipe, then enters the inner cavity, and finally enters the interior of the insulation shell from the air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described below are only some embodiments. A person skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0017] Figure 1 This is a schematic diagram of the main perspective structure of a sealing structure of a low-temperature heat-insulating shell of a thin film machine TDO proposed in the utility model;

[0018] Figure 2 This is a rear perspective structural diagram of a sealing structure of a TDO low-temperature insulation shell of a thin film machine proposed in the utility model;

[0019] Figure 3 The utility model provides a schematic diagram of the cross-sectional three-dimensional structure of the insulation shell in the sealing structure of the low-temperature insulation shell of a thin film machine TDO;

[0020] Figure 4 The utility model provides a schematic diagram of the cross-sectional three-dimensional structure of a base in a sealing structure of a low-temperature heat-insulating shell of a thin film machine TDO.

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0022] 1. Base; 2. Pad; 3. Insulation shell; 4. Turntable; 5. Rocker; 6. Positioning hole; 7. Sealing groove; 8. Air outlet; 9. Air inlet pipe; 10. Roller; 11. Film body; 12. Opening; 13. Sealing strip; 14. Sealing frame; 15. Limiting frame; 16. Arc-shaped opening; 17. Inner flow channel; 18. Inner cavity; 19. Limiting groove; 20. Hollow rubber tube.

[0023] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Example 1, as Figure 1-4 As shown, the utility model provides a technical solution for the sealing structure of the low-temperature insulation shell of a thin film machine TDO: it includes a base 1, a sealing groove 7 is provided on the top of the base 1 near the edge of the outer surface, an insulation shell 3 is arranged above the base 1, and a sealing frame 14 is fixed to the bottom of the insulation shell 3, and the sealing frame 14 is engaged with the inside of the sealing groove 7, and openings 12 are provided on the outer surfaces of both sides of the insulation shell 3 near the top edge, and the inner top and bottom surfaces of the two openings 12 are fixed with sealing strips 13, and a film body 11 is provided inside the insulation shell 3, and the ends of the film body 11 are both located inside the openings 12, and the film body 11 is located between the two sealing strips 13 inside the opening 12, and two pads 2 are fixed to the bottom of the base 1.

[0026] The effect achieved by the entire embodiment 1 is that the sealing frame 14 is engaged inside the sealing groove 7, so that the connection between the insulation shell 3 and the base 1 is in a sealed state, and the ends of the film body 11 are both located inside the opening 12, and the film body 11 is located between the two sealing strips 13 inside the opening 12, so that when cold air is injected into the insulation shell 3, the cold air can be blown to the outside from the position where the film body 11 and the sealing strip 13 are in contact with each other, and the blown cooling air will flow outward along the film body 11 at a distance outside the insulation shell 3. During the flow, the cooling of the film body 11 by the cold air gradually weakens, so that the film body 11 transitions to the change in its temperature when it is transported out of the insulation shell 3, preventing wrinkles from occurring on the outer surface of the film body 11 when the temperature changes drastically.

[0027] Example 2, as Figure 1-4 As shown, the inner part of the heat preservation shell 3 is rotatably connected to the drum 10, the outer surface of the drum 10 is in contact with the outer surface of the film body 11, the front side of the heat preservation shell 3 is rotatably connected to the turntable 4, the rear side of the turntable 4 is fixed to one end of the drum 10, and a rocker 5 is provided near the edge of the outer surface of the turntable 4. A positioning hole 6 is provided on the front side of the heat preservation shell 3, and the positioning hole 6 is located directly behind the rocker 5. A limiting groove 19 is provided on the inner bottom surface of the sealing groove 7, and a limiting frame 15 is fixed to the bottom of the sealing frame 14. The limiting frame 15 is engaged with the inner part of the limiting groove 19, and the sealing frame An arc-shaped opening 16 is provided on the outer surface of 14, and hollow rubber tubes 20 are fixed to the inner walls of the four sides of the sealing groove 7. The four hollow rubber tubes 20 are interconnected and are sealed and engaged inside the arc-shaped opening 16. An inner cavity 18 is provided inside the base 1, and a plurality of air outlets 8 that penetrate into the inner cavity 18 are equidistantly provided on the top of the base 1. Two inner flow channels 17 are provided inside the base 1, and one end of the two inner flow channels 17 penetrates into the inner cavity 18. An air inlet pipe 9 is fixed to the rear side of the base 1, and the other ends of the two inner flow channels 17 are connected to the inside of the air inlet pipe 9.

[0028] The effect achieved by the entire embodiment 2 is that when the sealing frame 14 is engaged in the sealing groove 7, the mutual engagement of the limit groove 19 and the limit frame 15 can make the insulation shell 3 more firm, and at the same time, the hollow rubber tube 20 is sealed and fitted inside the arc-shaped opening 16, which can enhance the sealing performance of the joint between the sealing groove 7 and the sealing frame 14. When cold air is supplied to the inside of the insulation shell 3, the cold air enters the inner flow channel 17 through the air inlet pipe 9, then enters the inner cavity 18, and finally enters the inside of the insulation shell 3 from the air outlet 8. A roller 10 is arranged inside the insulation shell 3, and the film body 11 can be guided and transported by the roller 10, or the film body 11 can be rolled up, depending on the actual working conditions.

[0029] Working principle: When using this device, the sealing frame 14 is engaged with the inside of the sealing groove 7, so that the connection between the insulation shell 3 and the base 1 is in a sealed state, and the ends of the film body 11 are both located inside the opening 12, and the film body 11 is located between the two sealing strips 13 inside the opening 12, so that when cold air is injected into the insulation shell 3, the cold air can be blown to the outside from the position where the film body 11 and the sealing strip 13 are in contact with each other, and the blown cooling air will flow outward along the film body 11 at a distance outside the insulation shell 3. During the flow, the cooling of the film body 11 by the cold air gradually weakens, so that the film body 11 transitions to its temperature change when it is transported out of the insulation shell 3, preventing the temperature from suddenly changing. When there are drastic changes, wrinkles will occur on the outer surface of the film body 11. When the sealing frame 14 is engaged in the sealing groove 7, the mutual engagement of the limit groove 19 and the limit frame 15 can make the insulation shell 3 more secure. At the same time, the hollow rubber tube 20 is sealed and fitted inside the arc-shaped opening 16, which can enhance the sealing performance of the joint between the sealing groove 7 and the sealing frame 14. When cold air is supplied to the inside of the insulation shell 3, the cold air enters the inner flow channel 17 through the air inlet pipe 9, then enters the inner cavity 18, and finally enters the insulation shell 3 from the air outlet 8. A roller 10 is arranged inside the insulation shell 3. The film body 11 can be guided and transported by the roller 10, or the film body 11 can be rolled up, depending on the actual working conditions.

[0030] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention should be understood by anyone. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention. The technology, shape, and structure not described in detail in the present invention are all known technologies.

Claims

1. A sealing structure for a TDO low-temperature heat-insulating shell of a thin film machine, comprising a base (1), characterized in that: A sealing groove (7) is provided at the top of the base (1) near the edge of the outer surface, an insulation shell (3) is provided above the base (1), a sealing frame (14) is fixed at the bottom of the insulation shell (3), and the sealing frame (14) is engaged in the interior of the sealing groove (7), openings (12) are provided on both sides of the outer surface of the insulation shell (3) near the top edge, and sealing strips (13) are fixed on the inner top and bottom surfaces of the two openings (12), a film body (11) is provided inside the insulation shell (3), the ends of the film body (11) are both located inside the openings (12), and the film body (11) is located between the two sealing strips (13) inside the openings (12), and two pads (2) are fixed at the bottom of the base (1).

2. The sealing structure of the TDO low-temperature insulation shell of a thin film machine according to claim 1, characterized in that: The interior of the heat-insulating shell (3) is rotatably connected to a roller (10), and the outer surface of the roller (10) is in contact with the outer surface of the film body (11).

3. The sealing structure of the low-temperature heat-insulating shell of a thin film machine TDO according to claim 2, characterized in that: The front side of the heat-insulating shell (3) is rotatably connected to a turntable (4), and the rear side of the turntable (4) is fixed to one end of the drum (10).

4. The sealing structure of the low-temperature heat-insulating shell of a thin film machine TDO according to claim 3, characterized in that: A rocker (5) is provided on the outer surface of the turntable (4) near the edge, and a positioning hole (6) is provided on the front side of the heat-insulating shell (3), and the positioning hole (6) is located directly behind the rocker (5).

5. The sealing structure of the low-temperature heat-insulating shell of a thin film machine TDO according to claim 4, characterized in that: A limiting groove (19) is provided on the inner bottom surface of the sealing groove (7), a limiting frame (15) is fixed to the bottom of the sealing frame (14), and the limiting frame (15) is engaged in the inner portion of the limiting groove (19).

6. The sealing structure of the low-temperature heat-insulating shell of a thin film machine TDO according to claim 1, characterized in that: An arc-shaped opening (16) is formed on the outer surface of the sealing frame (14), and hollow rubber tubes (20) are fixed to the inner walls of the four sides of the sealing groove (7). The four hollow rubber tubes (20) are interconnected and are all sealed and engaged inside the arc-shaped opening (16).

7. The sealing structure of the low-temperature heat-insulating shell of a thin film machine TDO according to claim 1, characterized in that: An inner cavity (18) is provided inside the base (1), a plurality of air outlets (8) are provided at equal intervals on the top of the base (1) and extend into the inner cavity (18), two inner flow channels (17) are provided inside the base (1), one end of each of the two inner flow channels (17) extends into the inner cavity (18), an air inlet pipe (9) is fixed to the rear side of the base (1), and the other ends of each of the two inner flow channels (17) are connected to the inside of the air inlet pipe (9).

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