TPU (thermoplastic polyurethane) film compounding device

Abstract

The utility model discloses a TPU film compounding device, and belongs to the technical field of TPU film manufacturing equipment. The two film heating rollers directly heat the extruded film, and the two film heating rollers can heat the upper surface and the lower surface of the film at the same time, so that the heating uniformity is improved, and the situation that the film is broken in the stretching process is avoided; and by arranging the film coating heating roller, the film can be continuously heated after being stretched, so that the protective film guided from the film coating turning roller can be conveniently combined with the film.

Description

TECHNICAL FIELD

[0001] The utility model belongs to TPU film manufacturing equipment technical field, specifically relates to a kind of TPU film composite device. BACKGROUND

[0002] The film extruded just after production generally needs to be stretched along the length direction (also called longitudinal direction) of the film, and the physical properties of the film after longitudinal stretching can be improved.The film longitudinal stretching equipment includes a stretching roller set, the stretching roller set is provided with a plurality of stretching rollers, the stretching rollers are arranged in parallel, the center axes of the stretching rollers are located in the same plane, and the rotation speeds of the stretching rollers differ from each other.The rotation speed of the stretching roller close to the downstream is greater, and when the film passes the surface of each specific stretching roller during operation, the film will be attached to the surface of the stretching roller, and at this time, the running speed of the film on the surface of the stretching roller is equal to the linear speed of the corresponding stretching roller surface, so that the film between the adjacent two stretching rollers is stretched.

[0003] In the existing longitudinal stretching equipment, the thick sheet is heated by the preheating roller set for longitudinal stretching.As the thickness of the thick sheet is large, the thick sheet is not heated enough or is not heated evenly, and uneven stretching and breakage often occur during longitudinal stretching, which affects the quality of the longitudinally stretched film, and a protective film needs to be attached to the film after stretching.The temperature of the film after stretching is reduced, which also affects the attachment of the protective film. SUMMARY

[0004] The utility model mainly solves the technical problems existing in the prior art, and provides a TPU film composite device.

[0005] The utility model discloses a technical scheme that solves the above technical problems: a TPU film compounding device, including two side plates and drive motor, two side plates are set up left and right, the drive motor is located at the downside of right side side plate, its characterized in that: drive shaft of drive motor is fixedly connected with one driving pulley, two film heating rollers, two transition rollers, film heating roller, film electrostatic roller and film direction changing roller are equipped between two side plates, two film heating rollers are equipped between the front end of two side plates, and two film heating rollers are set up in alignment, film heating roller is equipped at the rear side of the film heating roller of downside, two transition rollers are equipped on the front and back of film heating roller, film direction changing roller is equipped on the upside of film heating roller, film electrostatic roller is equipped on the rear side of film direction changing roller, and the left and right ends of film heating roller, transition roller, film heating roller, film electrostatic roller and film direction changing roller are all rotatably connected on the side plate of both sides, and are all fixedly connected with one drive gear on the end, the drive gear on film electrostatic roller and film direction changing roller is engaged with each other, the drive gear on two film heating rollers is engaged with each other, and three transition gears are rotatably connected on the side plate of right side, are respectively equipped between film heating roller, transition roller, film heating roller and transition roller two by two, and are engaged with the corresponding drive gear.

[0006] Preferably, the top of the film heating roller, the film heating roller and the two transition rollers on the downside are at the same height.

[0007] Preferably, a driven pulley is arranged outside the drive gear on the film heating roller.

[0008] Preferably, a transmission belt is connected between the driving pulley and the driven pulley.

[0009] The utility model has the beneficial effects that: two film heating rollers directly heat the extruded film, the two film heating rollers can heat the upper and lower surfaces of the film at the same time, thereby improving the uniformity of heating and avoiding the film from being broken during the stretching process; the film heating roller is arranged to continuously heat the film after the film is stretched, so that the protective film introduced from the film direction changing roller is combined with the film. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 is a structural schematic view of the utility model;

[0011] Fig. 2 is a structural schematic view of the bottom of the utility model.

[0012] In the diagram: 1. Side plate; 2. Drive motor; 3. Drive pulley; 4. Film heating roller; 5. Transition roller; 6. Coating heating roller; 7. Coating electrostatic roller; 8. Coating reversing roller; 9. Drive gear; 10. Transition gear; 11. Driven pulley; 12. Transmission belt. Detailed Implementation

[0013] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0014] Example: A TPU film composite device, such as Figs. 1-2 As shown, the device includes two side plates 1 and a drive motor 2. The two side plates 1 are arranged side to side. The drive motor 2 is located on the lower side of the right side plate 1. A drive pulley 3 is fixedly connected to the drive shaft of the drive motor 2. Between the two side plates 1, there are two film heating rollers 4, two transition rollers 5, a film coating heating roller 6, a film coating electrostatic roller 7, and a film coating reversing roller 8. The two film heating rollers 4 are located between the front ends of the two side plates 1 and are aligned vertically. The film coating heating roller 6 is located behind the lower film heating roller 4. The two transition rollers 5 are located on the front and rear sides of the film coating heating roller 6. The film coating reversing roller 8 is located on the film coating heating roller 6. Above the heating roller 6, the electrostatic coating roller 7 is located behind the coating reversing roller 8. The left and right ends of the film heating roller 4, transition roller 5, film heating roller 6, film electrostatic coating roller 7 and film reversing roller 8 are rotatably connected to the side plates 1 on both sides, and each has a drive gear 9 fixedly connected at its end. The drive gear 9 on the film electrostatic coating roller 7 and the film reversing roller 8 mesh with each other, and the drive gears 9 on the two film heating rollers 4 mesh with each other. Three transition gears 10 are rotatably connected to the side plate 1 on the right side, respectively located between the film heating roller 4, transition roller 5, film heating roller 6 and transition roller 5, and mesh with the corresponding drive gear 9.

[0015] The tops of the lower film heating roller 4, the film coating heating roller 6 and the two transition rollers 5 are all at the same height; a driven pulley 11 is provided outside the drive gear 9 on the film coating heating roller 6; a transmission belt 12 is connected between the driving pulley 3 and the driven pulley 11.

[0016] The utility model discloses a principle: the film is extruded through die head and forms thick film, and driving motor 2 rotates and drives film heating roller 6 to rotate, and the rotation of film heating roller 6 drives two film heating rollers 4, two transition rollers 5 and film heating roller 6 to rotate through the rotation of driving gear 9 and transition gear 10, and film heating roller 6 drives film moving with film direction-changing roller 8, and two film heating rollers 4 also clamp film, and realize the stretching of film through the speed difference of both, and the speed difference is controlled through the gear ratio of driving gear 9 and transition gear 10, and two film heating rollers 4 directly heat extruded film, and two film heating rollers 4 can heat the upper and lower surfaces of film simultaneously, thereby improving the uniformity of heating, and the protective film is guided into through film electrostatic roller 7 and film direction-changing roller 8, and the protective film is covered on the surface of film, and film heating roller 6 can heat the film at the position of film, thereby improving the firmness of the combination of protective film and film.

[0017] Finally, it should be noted that the above embodiments are only representative examples of the utility model. Obviously, the utility model is not limited to the above embodiments, and there can be many variations. Any simple modification, equivalent change and modification according to the technical essence of the utility model to the above embodiments should be considered as falling within the protection scope of the utility model.

Claims

1. A TPU film compounding device, comprising two side plates (1) and a driving motor (2), the two side plates (1) are arranged left and right, and the driving motor (2) is arranged on the lower side of the right side plate (1), characterized in that: The driving shaft of the driving motor (2) is fixedly connected with a driving pulley (3), two film heating rollers (4), two transition rollers (5), a film heating roller (6), a film electrostatic roller (7) and a film direction-changing roller (8) are arranged between the two side plates (1), the two film heating rollers (4) are arranged between the front ends of the two side plates (1), the two film heating rollers (4) are arranged in alignment, the film heating roller (6) is arranged at the rear side of the lower film heating roller (4), the two transition rollers (5) are arranged at the front and rear sides of the film heating roller (6), the film direction-changing roller (8) is arranged at the upper side of the film heating roller (6), the film electrostatic roller (7) is arranged at the rear side of the film direction-changing roller (8), the left and right ends of the film heating roller (4), the transition roller (5), the film heating roller (6), the film electrostatic roller (7) and the film direction-changing roller (8) are rotatably connected to the side plates (1), and a driving gear (9) is fixedly connected at the end, the driving gears (9) on the film electrostatic roller (7) and the film direction-changing roller (8) are meshed with each other, the driving gears (9) on the two film heating rollers (4) are meshed with each other, three transition gears (10) are rotatably connected to the right side plate (1), and are arranged between the film heating roller (4), the transition roller (5), the film heating roller (6) and the transition roller (5) in pairs, and are meshed with the corresponding driving gears (9).

2. The TPU film compounding device of claim 1, wherein: The top of the lower film heating roller (4), the film heating roller (6) and the two transition rollers (5) is at the same height.

3. The TPU film compounding device of claim 2, wherein: A driven pulley (11) is arranged outside the driving gear (9) on the film heating roller (6).

4. The TPU film compounding device of claim 3, wherein: The driving pulley (3) and the driven pulley (11) are connected with a transmission belt (12).

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