CN219769093U

CN219769093U - Stretching mechanism is used in TPU film processing

Info

Publication number: CN219769093U
Application number: CN202321295117.8U
Authority: CN
Inventors: 周光波; 尹国望; 周宁辉; 邓晟; 汤强强; 刘南权
Original assignee: Guangxi Ningming Taikesheng Precision Technology Co ltd
Current assignee: Guangxi Ningming Taikesheng Precision Technology Co ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-09-29
Anticipated expiration: 2033-05-25

Abstract

The utility model discloses a stretching mechanism for TPU film processing, and relates to the technical field of film production and processing. The device comprises a frame, a leading-in roller, a first heating roller, a first stretching roller, a second heating roller, a second stretching roller, a third heating roller and a leading-out roller are sequentially installed on the frame, and the first heating roller, the second heating roller and the third heating roller comprise a hand wheel screw rod, a roller seat, a roller, an end cover, a PI electrothermal film, a temperature sensor and a conductive slip ring. This stretching mechanism is used in TPU film processing, after heating the film through the preheating roller group of front end, stretches the film through the stretching roller, and at the in-process of stretching, owing to be provided with the heating roller between the stretching roller pair by pair, the PI electrothermal film in the usable heating roller generates heat, makes the film can also maintain certain heat when stretching to ensure that the film can reach stretching temperature, prevent that film heating is not enough to lead to stretching inhomogeneous or cracked condition to take place.

Description

Stretching mechanism is used in TPU film processing

Technical Field

The utility model relates to the technical field of film production and processing, in particular to a stretching mechanism for TPU film processing.

Background

The film extruded from the production process generally needs to be stretched along the length direction (also called as longitudinal direction) of the film, the physical properties of the film subjected to longitudinal stretching can be improved, the film longitudinal stretching equipment comprises a stretching roller set, the stretching roller set is provided with a plurality of stretching rollers, the stretching rollers are arranged in parallel, the central axes of the stretching rollers are positioned in the same plane, the rotating speeds of the stretching rollers are different, the rotating speeds of the stretching rollers close to the downstream are larger, when the film passes through the surface of each stretching roller, the film can be adhered to the surface of the stretching roller, and at the moment, the running speed of the film on the surface of the stretching roller is equal to the rotating linear speed of the surface of the corresponding stretching roller, so that the film between two adjacent stretching rollers can have a certain stretching effect.

In the existing longitudinal stretching equipment, the thick sheet is heated by the preheating roller set to be longitudinally stretched, and the thickness of the thick sheet is larger, so that the thick sheet is not heated enough or heated unevenly, uneven stretching and fracture occur in the longitudinal stretching process, and the quality of a longitudinally stretched film is affected.

Disclosure of Invention

The utility model provides a stretching mechanism for processing a TPU film, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the stretching mechanism for TPU film processing comprises a frame, wherein a lead-in roller, a first heating roller, a first stretching roller, a second heating roller, a second stretching roller, a third heating roller and a lead-out roller are sequentially arranged on the frame;

the first heating roller, the second heating roller and the third heating roller comprise a hand wheel screw, a roller seat, rollers, end covers, PI electric heating films, temperature sensors and conductive slip rings, the head end of the hand wheel screw is connected with the roller seat through bearings, the rollers are arranged on the roller seat through bearings, the end covers are arranged at the two ends of the rollers in a threaded mode, the PI electric heating films are attached to the inner walls of the rollers, and the temperature sensors and the conductive slip rings are arranged on end covers located at one end of the rollers.

Further, the bottom of frame is equipped with the stabilizer blade, and is equipped with the fixed orifices on the stabilizer blade.

Further, a chute is arranged on the outer wall of the frame, and the first heating roller, the second heating roller and the third heating roller are respectively positioned in the chute.

Further, the hand wheel screw rod is installed in the chute in a threaded mode, and the roller seat slides in the chute.

Further, the outer end of the end cover is provided with a rotating shaft, and the conductive slip ring is positioned in the rotating shaft.

Further, the temperature sensor is arranged on the inner surface of the end cover, and the detection end of the temperature sensor is attached to the inner wall of the roller.

Compared with the prior art, the utility model provides a stretching mechanism for processing a TPU film, which has the following beneficial effects:

this stretching mechanism is used in TPU film processing, after heating the film through the preheating roller group of front end, stretches the film through the stretching roller, and at the in-process of stretching, owing to be provided with the heating roller between the stretching roller pair by pair, the PI electrothermal film in the usable heating roller generates heat, makes the film can also maintain certain heat when stretching to ensure that the film can reach stretching temperature, prevent that film heating is not enough to lead to stretching inhomogeneous or cracked condition to take place.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a view showing a structure of a first heating roller of the present utility model;

fig. 3 is a partial schematic view of a first heated roll of the present utility model.

In the figure: 1. a frame; 2. an introducing roller; 3. a first heating roller; 4. a first stretching roller; 5. a second heating roller; 6. a second stretching roller; 7. a third heating roller; 8. a lead-out roller; 9. a hand wheel screw; 10. a roller seat; 11. a roller; 12. an end cap; 13. PI electrothermal film; 14. a temperature sensor; 15. a conductive slip ring; 16. a support leg; 17. a fixing hole; 18. a chute; 19. a rotating shaft.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the utility model discloses a stretching mechanism for processing a TPU film, which comprises a frame 1, wherein a lead-in roller 2, a first heating roller 3, a first stretching roller 4, a second heating roller 5, a second stretching roller 6, a third heating roller 7 and a lead-out roller 8 are sequentially arranged on the frame 1, after the film is heated by a preheating roller set at the front end, the film is stretched by the stretching rollers, and in the stretching process, as the heating rollers are arranged between every two stretching rollers, a PI electrothermal film 13 in the heating rollers can be utilized to generate heat, so that the film can maintain a certain heat degree during stretching, the film can reach a stretching temperature, and the conditions of uneven stretching or breakage caused by insufficient film heating are prevented;

the first heating roller 3, the second heating roller 5 and the third heating roller 7 comprise a hand wheel screw 9, a roller seat 10, a roller 11, an end cover 12, a PI electrothermal film 13, a temperature sensor 14 and a conductive slip ring 15, the head end of the hand wheel screw 9 is connected with the roller seat 10 through a bearing, the roller 11 is arranged on the roller seat 10 through a bearing, the end covers 12 are arranged at two ends of the roller 11 in a threaded manner, the PI electrothermal film 13 is attached to the inner wall of the roller 11, and the temperature sensor 14 and the conductive slip ring 15 are arranged on the end cover 12 at one end of the roller 11.

Specifically, the bottom of the frame 1 is provided with a support leg 16, and the support leg 16 is provided with a fixing hole 17.

In this embodiment, the frame 1 is fixed to the production facility by means of fixing holes 17 in the legs 16 in cooperation with bolts.

Specifically, a chute 18 is arranged on the outer wall of the frame, and the first heating roller 3, the second heating roller 5 and the third heating roller 7 are respectively positioned in the chute 18.

In the present embodiment, the chute 18 is mainly used for mounting and fixing the first heating roller 3, the second heating roller 5, and the third heating roller 7.

Specifically, the hand wheel screw 9 is threadedly mounted in the chute 18, and the roller seat 10 slides in the chute 18.

In this embodiment, the roller 11 on the roller seat 10 can be driven to lift up and down by rotating the hand wheel screw 9, so that fine adjustment of tension is performed to a certain extent.

Specifically, the outer end of the end cover 12 is provided with a rotating shaft 19, and the conductive slip ring 15 is located in the rotating shaft 19.

In this embodiment, the rotating shaft 19 is used to be fixed on the roller seat 10 in cooperation with a bearing, and the conductive slip ring 15 is used in any electromechanical system that requires continuous rotation and simultaneously needs to transmit power and signals from a fixed position to a rotating position, so that the slip ring can improve the system performance, simplify the system structure, and avoid the strain caused by the wire in the rotating process.

Specifically, the temperature sensor 14 is mounted on the inner surface of the end cover 12, and the detection end of the temperature sensor 14 is abutted against the inner wall of the roller 11.

In this embodiment, temperature sensor 14 is used to detect the heated temperature of roller 11, thereby better controlling the temperature.

When the film stretching machine is used, after the film is heated by the preheating roller set at the front end, the film is stretched by the stretching rollers, and in the stretching process, as the heating rollers are arranged between every two stretching rollers, the PI electrothermal film 13 in the heating rollers can be utilized to generate heat, so that the film can maintain a certain heat degree during stretching, the film can reach the stretching temperature, and the condition that the film is not uniformly stretched or is broken due to insufficient heating is prevented.

In summary, according to the stretching mechanism for TPU film processing, after the film is heated by the preheating roller set at the front end, the film is stretched by the stretching rollers, and in the stretching process, as the heating rollers are arranged between the stretching rollers, the PI electrothermal film 13 in the heating rollers can be utilized to generate heat, so that the film can maintain a certain heat degree during stretching, the film can reach the stretching temperature, and the condition that the film is not uniformly stretched or is broken due to insufficient heating is prevented.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a TPU film processing is with stretching mechanism, includes frame (1), its characterized in that: the frame (1) is provided with a leading-in roller (2), a first heating roller (3), a first stretching roller (4), a second heating roller (5), a second stretching roller (6), a third heating roller (7) and a leading-out roller (8) in sequence;

the first heating roller (3), the second heating roller (5) and the third heating roller (7) comprise a hand wheel screw rod (9), a roller seat (10), a roller (11), an end cover (12), a PI electric heating film (13), a temperature sensor (14) and a conductive slip ring (15), the head end of the hand wheel screw rod (9) is connected with the roller seat (10) through a bearing, the roller (11) is installed on the roller seat (10) through the bearing, the end cover (12) is installed at two ends of the roller (11) in a threaded manner, the PI electric heating film (13) is attached to the inner wall of the roller (11), and the temperature sensor (14) and the conductive slip ring (15) are installed on the end cover (12) positioned at one end of the roller (11).

2. The stretching mechanism for processing a TPU film according to claim 1, wherein: the bottom of the frame (1) is provided with a support leg (16), and the support leg (16) is provided with a fixing hole (17).

3. The stretching mechanism for processing a TPU film according to claim 1, wherein: the outer wall of the frame is provided with a chute (18), and the first heating roller (3), the second heating roller (5) and the third heating roller (7) are respectively positioned in the chute (18).

4. A stretching mechanism for processing a TPU film according to claim 3, wherein: the hand wheel screw rod (9) is arranged in the sliding groove (18) in a threaded mode, and the roller seat (10) slides in the sliding groove (18).

5. The stretching mechanism for processing a TPU film according to claim 1, wherein: the outer end of the end cover (12) is provided with a rotating shaft (19), and the conductive slip ring (15) is positioned in the rotating shaft (19).

6. The stretching mechanism for processing a TPU film according to claim 1, wherein: the temperature sensor (14) is arranged on the inner surface of the end cover (12), and the detection end of the temperature sensor (14) is abutted against the inner wall of the roller (11).