Cooling unit of PE protective film two-way stretching device

Abstract

The utility model discloses a cooling unit of a PE (Poly Ethylene) protective film two-way stretching device, which comprises a base plate, a mounting frame provided with a wind-up roller and arranged at the top of the base plate, a mounting plate provided with a plurality of annealing compression rollers, and an upper cooling roller and a lower cooling roller which are oppositely arranged between the wind-up roller and the annealing compression rollers, a fixing rod is mounted on the side, opposite to the annealing pressing roller, of the mounting plate, two first connecting rods are arranged on the fixing rod in a crossed mode, one first connecting rod is rotationally connected with an upper cooling roller, and the other first connecting rod is rotationally connected with a lower cooling roller; the ends, away from the upper cooling roller and the lower cooling roller, of the first connecting rods are each rotationally connected with a second connecting rod, a push rod is arranged on one side of the fixing rod, and the two second connecting rods are rotationally connected with the movable end of the push rod. According to the utility model, the rapid cooling of the protective film is realized, the deformation of the protective film in the subsequent winding process is greatly reduced, and the winding effect of the protective film is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of protective film stretching, in particular to a cooling unit of a PE protective film biaxial stretching device. Background Art

[0002] With the development of science and technology, people are becoming more and more proficient in using various materials. The research on films has become increasingly in-depth, and the application range of plastic films has also become increasingly wider. Among them, PE film is polyethylene film. It is produced from PE particles. It can be made into films of different densities for various uses, such as moisture-proofing and protecting items. Protective films can be divided into digital product protective films, automotive protective films, household protective films, food preservation protective films, etc. according to their use.

[0003] A search revealed patent publication number CN110802833A, which discloses a "film biaxial stretching device" comprising a stretching roller, a preheating roller, a guide roller, and a stretching guide bracket. The semicircular stretching guide bracket is positioned above the stretching roller surface and is mounted with a stretching belt and several guide pulleys. The stretching belt wraps around several guide pulleys, each of which is tangential to the stretching roller surface. Two sets of stretching guide brackets are provided, forming an "eight" shape on the stretching roller surface. The preheating roller, stretching roller, guide pulleys, and guide rollers together form the film transfer path within the stretching device. This device utilizes a belt arranged in an "eight" shape on the stretching roller surface to achieve biaxial stretching of the film in both the machine direction and the direction perpendicular to the machine direction, improving the film's mechanical and barrier properties and achieving continuous biaxial stretching of the biaxially stretched film. The device features a simple structure, easy stretch ratio adjustment, stable and reliable operation, and offers significant cost advantages for the resulting biaxially stretched film.

[0004] In the prior art, the protective film is generally preheated by a preheating roller, and then stretched by a guide roller and a stretching roller. However, the protective film cools slowly by natural cooling after stretching, causing the protective film to be easily deformed during the winding process, resulting in poor winding effect of the protective film. Summary of the Invention

[0005] The purpose of the utility model is to provide a cooling unit for a PE protective film biaxial stretching device, which realizes rapid cooling of the protective film, greatly reduces deformation of the protective film during the subsequent winding process, and improves the winding effect of the protective film.

[0006] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a cooling unit of a PE protective film biaxial stretching device, comprising: a base plate, a mounting frame with a winding roller is provided on the top of the base plate, and a mounting plate with a plurality of annealing rollers, the annealing rollers are spaced apart along the length direction of the mounting plate, and adjacent annealing rollers are staggered in the upper and lower directions;

[0007] An upper cooling roller and a lower cooling roller are arranged opposite to each other between the winding roller and the annealing roller, a fixed rod is installed on the side of the mounting plate opposite to the annealing roller, and two first connecting rods are cross-arranged on the fixed rod, and one of the first connecting rods is rotatably connected to the upper cooling roller, and the other first connecting rod is rotatably connected to the lower cooling roller, and one end of the first connecting rod away from the upper cooling roller and the lower cooling roller is rotatably connected to a second connecting rod, a push rod is provided on one side of the fixed rod, and the two second connecting rods are rotatably connected to the movable end of the push rod.

[0008] The further improved scheme in the above technical scheme is as follows:

[0009] 1. In the above solution, the winding roller is arranged parallel to the annealing roller.

[0010] 2. In the above solution, the upper cooling roller and the lower cooling roller are both arranged parallel to the winding roller.

[0011] 3. In the above solution, the length of the first connecting rod is 1 to 3 times the length of the second connecting rod.

[0012] 4. In the above solution, the annealing pressure roller close to the winding roller is located between the upper cooling roller and the lower cooling roller.

[0013] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0014] The cooling unit of the PE protective film biaxial stretching device of the present invention is located between the winding roller and the annealing roller, and an upper cooling roller and a lower cooling roller are arranged in a relative manner. A fixed rod is installed on the side of the mounting plate opposite to the annealing roller, and two first connecting rods are cross-arranged on the fixed rod, and one of the first connecting rods is rotatably connected to the upper cooling roller, and the other first connecting rod is rotatably connected to the lower cooling roller, and one end of the first connecting rod away from the upper cooling roller and the lower cooling roller is respectively rotatably connected to a second connecting rod, and a push rod is provided on one side of the fixed rod, and the movable end of the push rod is extended to drive the two second connecting rods to rotate to reduce the gap between the first support rods, so that the upper cooling roller and the lower cooling roller can clamp the protective film passing through the annealing roller, thereby realizing rapid cooling of the protective film, greatly reducing the deformation of the protective film in the subsequent winding process, and improving the winding effect of the protective film. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attachment Figure 1 This is a schematic structural diagram of the cooling unit of the PE protective film biaxial stretching device of the present invention from a first perspective;

[0016] Attachment Figure 2 This is a structural schematic diagram of the cooling unit of the PE protective film biaxial stretching device of the utility model from a second perspective;

[0017] Attachment Figure 3 For this utility model Figure 2 Enlarged view of point A.

[0018] In the above figures: 1. Mounting plate; 2. Base plate; 3. Winding roller; 4. Mounting frame; 5. Motor; 6. Upper cooling roller; 7. Lower cooling roller; 8. First connecting rod; 9. Second connecting rod; 10. Push rod; 11. Annealing roller; 12. Fixed rod. DETAILED DESCRIPTION

[0019] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0020] Example 1: A cooling unit for a PE protective film biaxial stretching device, comprising: a base plate 2, a mounting frame 4 with a winding roller 3 disposed on top of the base plate 2, and a mounting plate 1 with a plurality of annealing rollers 11, the annealing rollers 11 being spaced apart along the length of the mounting plate 1, with adjacent annealing rollers 11 being staggered in the upper and lower directions;

[0021] The PE protective film is passed between the annealing rollers, and then passed between the upper cooling roller and the lower cooling roller. The motor is started to drive the winding roller to rotate, so that the processed protective film can be wound up by the winding roller.

[0022] An upper cooling roller 6 and a lower cooling roller 7 are arranged in a relative manner between the winding roller 3 and the annealing roller 11. A fixed rod 12 is installed on the side of the mounting plate 1 opposite to the annealing roller 11, and two first connecting rods 8 are cross-arranged on the fixed rod 12, and one of the first connecting rods 8 is rotatably connected to the upper cooling roller 6, and the other first connecting rod 8 is rotatably connected to the lower cooling roller 7, and one end of the first connecting rod 8 away from the upper cooling roller 6 and the lower cooling roller 7 is rotatably connected to a second connecting rod 9, and a push rod 10 is provided on one side of the fixed rod 12, and the two second connecting rods 9 are rotatably connected to the movable end of the push rod 10;

[0023] The protective film needs to be cooled after annealing. The push rod can be opened to drive the second connecting rod to pull the first connecting rod. The two first connecting rods rotate around the fixed rod to reduce the distance between the ends of the first connecting rods, so that the upper cooling roller and the lower cooling roller are close to each other, and the annealed protective film is clamped between the annealing rollers to achieve rapid cooling and avoid deformation of the protective film during the winding process.

[0024] The upper cooling roller 6 and the lower cooling roller 7 are both arranged parallel to the winding roller 3 .

[0025] The length of the first connecting rod 8 is 1.5 times the length of the second connecting rod 9 .

[0026] The annealing pressure roller 11 close to the winding roller 3 is located between the upper cooling roller 6 and the lower cooling roller 7 .

[0027] The mounting bracket 4 is in an L-shape.

[0028] A motor 5 for driving the winding roller 3 to rotate is provided on the mounting frame 4 .

[0029] Example 2: A cooling unit for a protective film biaxial stretching device, comprising: a base plate 2, a mounting frame 4 with a winding roller 3 disposed on top of the base plate 2, and a mounting plate 1 with a plurality of annealing rollers 11, the annealing rollers 11 being spaced apart along the length of the mounting plate 1, with adjacent annealing rollers 11 being staggered in the upper and lower directions;

[0030] An upper cooling roller 6 and a lower cooling roller 7 are arranged in a relative manner between the winding roller 3 and the annealing roller 11. A fixed rod 12 is installed on the side of the mounting plate 1 opposite to the annealing roller 11, and two first connecting rods 8 are cross-arranged on the fixed rod 12, and one of the first connecting rods 8 is rotatably connected to the upper cooling roller 6, and the other first connecting rod 8 is rotatably connected to the lower cooling roller 7, and one end of the first connecting rod 8 away from the upper cooling roller 6 and the lower cooling roller 7 is rotatably connected to a second connecting rod 9, and a push rod 10 is provided on one side of the fixed rod 12, and the two second connecting rods 9 are rotatably connected to the movable end of the push rod 10;

[0031] By extending the movable end of the push rod, the two second connecting rods are driven to rotate to reduce the gap between the first support rods, so that the upper cooling roller and the lower cooling roller can clamp the protective film passing through the annealing roller, thereby achieving rapid cooling of the protective film, greatly reducing the deformation of the protective film in the subsequent winding process, and improving the winding effect of the protective film.

[0032] The winding roller 3 is arranged parallel to the annealing roller 11 .

[0033] The upper cooling roller 6 and the lower cooling roller 7 are both arranged parallel to the winding roller 3 .

[0034] The length of the first connecting rod 8 is 2.5 times the length of the second connecting rod 9 .

[0035] The annealing pressure roller 11 close to the winding roller 3 is located between the upper cooling roller 6 and the lower cooling roller 7 .

[0036] The working principle is:

[0037] When in use, the PE protective film is passed between the annealing rollers, and then passed between the upper cooling roller and the lower cooling roller. The motor is started to drive the winding roller to rotate, so that the processed protective film can be wound up by the winding roller.

[0038] The protective film needs to be cooled after annealing. The push rod can be opened to drive the second connecting rod to pull the first connecting rod. The two first connecting rods rotate around the fixed rod to reduce the distance between the ends of the first connecting rods, so that the upper cooling roller and the lower cooling roller are close to each other, and the annealed protective film is clamped between the annealing rollers to achieve rapid cooling and avoid deformation of the protective film during the winding process.

[0039] When the cooling unit of the above-mentioned protective film biaxial stretching device is used, the movable end of the push rod is extended to drive the two second connecting rods to rotate to reduce the gap between the first support rods, so that the upper cooling roller and the lower cooling roller can clamp the protective film passing through the annealing roller, thereby realizing rapid cooling of the protective film, greatly reducing the deformation of the protective film in the subsequent winding process, and improving the winding effect of the protective film.

[0040] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A cooling unit for a PE protective film biaxial stretching device, comprising: A base plate (2), characterized in that: a mounting frame (4) having a winding roller (3) and a mounting plate (1) having a plurality of annealing rollers (11) are provided on the top of the base plate (2), the annealing rollers (11) are spaced apart along the length direction of the mounting plate (1), and adjacent annealing rollers (11) are staggered in the upper and lower directions; An upper cooling roller (6) and a lower cooling roller (7) are arranged in a relative manner between the winding roller (3) and the annealing roller (11), a fixed rod (12) is installed on the side of the mounting plate (1) opposite to the annealing roller (11), and two first connecting rods (8) are cross-arranged on the fixed rod (12), and one of the first connecting rods (8) is rotatably connected to the upper cooling roller (6), and the other first connecting rod (8) is rotatably connected to the lower cooling roller (7), and one end of the first connecting rod (8) away from the upper cooling roller (6) and the lower cooling roller (7) is rotatably connected to a second connecting rod (9), and a push rod (10) is arranged on one side of the fixed rod (12), and the two second connecting rods (9) are rotatably connected to the movable end of the push rod (10).

2. The cooling unit of the PE protective film biaxial stretching device according to claim 1, characterized in that: The winding roller (3) is arranged parallel to the annealing roller (11).

3. The cooling unit of the PE protective film biaxial stretching device according to claim 1, characterized in that: The upper cooling roller (6) and the lower cooling roller (7) are both arranged parallel to the winding roller (3).

4. The cooling unit of the PE protective film biaxial stretching device according to claim 1, characterized in that: The length of the first connecting rod (8) is 1 to 3 times the length of the second connecting rod (9).

5. The cooling unit of the PE protective film biaxial stretching device according to claim 1, characterized in that: The annealing roller (11) close to the winding roller (3) is located between the upper cooling roller (6) and the lower cooling roller (7).

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