Cooling device for PVC (polyvinyl chloride) thermal shrinkage film stretching process

Abstract

The utility model discloses a cooling device for a stretching process of a PVC (polyvinyl chloride) heat shrinkage film. The cooling device has the beneficial effects that cooling liquid in the cooling device is subjected to circulating treatment, so that it is guaranteed that the cooling roller can make contact with a PVC film, the cooling effect of the cooling roller is always kept, the cooling effect of the cooling roller is enhanced under the condition that the cooling thin layer is made of a ceramic material, and the rotating shaft corresponding to the cooling thin layer is adopted to be in rotating fit; therefore, the cooling thin layer can be movably cooled and conducted. The auxiliary parts are arranged on the two sides of the cooling roller body in a matched mode, the cooling treatment effect of the PVC film can be enhanced by blowing convective cold air under the cooling of the PVC film through the cooling roller body, and uneven cooling caused by temperature difference is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of PCC film production, and more specifically to a cooling device for a PVC heat shrinkable film stretching process. Background Art

[0002] During the stretching process of the PVC heat shrink film, a cooling device is usually required to cool and shape the PVC film. Commonly used cooling equipment includes: cold air blowing fan, cooling roller, cooling spray system, cooling chamber (channel).

[0003] In the existing PVC heat shrink film stretching process, when a cooling roller is used to cool the PVC film, the cooling temperature of the side of the PVC film in contact with the cooling roller and the side exposed to the air are often inconsistent, resulting in uneven cooling, poor quality, and an increase in defective products.

[0004] Therefore, there is an urgent need for a cooling device that can always maintain a cooling effect on the PVC film. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention aims to provide a cooling device for a PVC heat shrink film stretching process, so as to solve the defect that in the prior art PVC heat shrink film stretching process, when a cooling roller is used to cool the PVC film, the cooling temperature of the side of the PVC film in contact with the cooling roller and the side exposed to the air are often inconsistent, resulting in uneven cooling, poor quality and an increase in defective products.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A cooling device for a PVC heat shrink film stretching process, comprising a cooling roller body, auxiliary parts arranged on the left and right sides of the cooling roller body and a rotating rod for rotating the cooling roller body, wherein the cooling roller body comprises a roller sleeve, a cooling thin layer uniformly distributed on the surface of the roller sleeve and forming an integrated structure, a cooling cavity arranged inside the roller sleeve, a rotating shaft uniformly and equidistantly installed on the inner wall of the cooling cavity and a transmission ring for synchronous transmission of the rotating shaft, and the auxiliary parts comprise a mounting plate and a mesh ring arranged on the surface of the mounting plate.

[0008] As a further solution of the present invention, the cooling thin layer is installed corresponding to the rotating shaft, and the cooling thin layer is made of ceramic.

[0009] As a further solution of the present invention, the cooling cavity is filled with circulating coolant, and the cooling roller body is actively cooled by the circulating coolant to ensure that the cooling roller body is kept cooled at all times.

[0010] As a further solution of the present invention, the transmission ring is connected to the rotating rod, so that under the rotation of the transmission ring, the rotating shaft connected thereto is synchronously driven to perform synchronous rotational motion, thereby cooperating with the cooling thin layer to perform active cooling treatment on the PVC film.

[0011] As a further solution of the present invention, the mounting plate is interlocked with the cooling roller body.

[0012] As a further solution of the present invention, the interior of the installation plate is a hollow structure, and a cold air flow is provided inside to blow toward the outside.

[0013] As a further solution of the present invention, the mounting plate is provided with a cooling air blower to achieve continuous blowing cooling of the surface of the PVC film to prevent uneven heating.

[0014] As a further solution of the present invention, connection holes connected to external cooling equipment are provided on both side surfaces of the cooling roller body to achieve the circulation of cooling liquid, thereby enhancing the cooling effect of the cooling roller on the PVC film.

[0015] Advantageous Effects of the Invention

[0016] Compared with a conventional cooling device for a PVC heat shrink film stretching process, the present invention has the following beneficial effects:

[0017] The present invention circulates the cooling liquid inside the cooling device to ensure that the cooling roller can always maintain the cooling effect on the PVC film, and when the cooling thin layer is set as a ceramic material, the cooling effect is enhanced, and the rotating shaft corresponding to the cooling thin layer is used to rotate and cooperate to realize active cooling conduction of the cooling thin layer;

[0018] Auxiliary parts are arranged on both sides of the cooling roller body, so that the cooling treatment effect of the PVC film can be strengthened by blowing convection cold air when the PVC film is cooled by the cooling roller body, thereby preventing temperature difference from occurring and causing uneven cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objectives and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the accompanying drawings.

[0020] In the attached picture:

[0021] Figure 1 It is a structural schematic diagram of a cooling device for a PVC heat shrink film stretching process of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-section structure of the cooling roller body of the present invention;

[0023] Figure 3 It is a schematic diagram of the partial structure of the cooling roller body of the present invention;

[0024] Figure 4 It is a schematic diagram of the partial connection structure between the cooling roller body and the auxiliary parts of the present invention.

[0025] In the figure: cooling roller body -1, auxiliary part -2, rotating rod -3, roller sleeve -11, cooling thin layer -12, cooling cavity -13, rotating shaft -14, transmission ring -15, mounting plate -21, mesh plate ring -22. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0027] like Figure 1 - Figure 4 As shown, the present invention provides a technical solution of a cooling device for a PVC heat shrink film stretching process:

[0028] As shown in the figure, a cooling device for a PVC heat shrink film stretching process comprises a cooling roller body 1, auxiliary parts 2 arranged on the left and right sides of the cooling roller body 1 and a rotating rod 3 for rotating the cooling roller body 1. The cooling roller body 1 comprises a roller sleeve 11, a cooling thin layer 12 uniformly distributed on the surface of the roller sleeve 11 and having an integrated structure, a cooling cavity 13 arranged inside the roller sleeve 11, a rotating shaft 14 arranged on the inner side wall of the cooling cavity 13 and installed uniformly and equidistantly, and a transmission ring 15 for synchronous transmission of the rotating shaft 14. The auxiliary part 2 comprises a mounting plate 21 and a mesh ring 22 arranged on the surface of the mounting plate 21.

[0029] The cooling thin layer 12 is installed corresponding to the rotating shaft 14, and the cooling thin layer 12 is made of ceramic.

[0030] The cooling cavity 13 is filled with circulating coolant, and the cooling roller body is actively cooled by the circulating coolant to ensure that the cooling roller body is kept cooled at all times.

[0031] The transmission ring 15 is connected to the rotating rod 3, so that the rotating shaft connected thereto can be synchronously driven to perform synchronous rotational motion under the rotation of the transmission ring, thereby cooperating with the cooling thin layer to perform active cooling treatment on the PVC film.

[0032] The mounting plate 21 is fitted through the cooling roller body 1 .

[0033] The interior of the mounting plate 21 is a hollow structure, and a cold air flow is provided inside the mounting plate 21 to blow toward the outside.

[0034] The mounting plate 21 is provided with a cooling fan, which can achieve continuous blowing cooling on the surface of the PVC film to prevent uneven heating.

[0035] The surfaces of both sides of the cooling roller body 1 are provided with connection holes connected to the external cooling equipment to realize the circulation of the cooling liquid, thereby enhancing the cooling effect of the cooling roller on the PVC film.

[0036] The specific implementation principle is as follows: the cooling roller body 1 is powered on and started, and the PVC film is rotated and transported in cooperation with the rotating rod 3. The cooling liquid filled in the cooling cavity 13 of the cooling roller body 1 is connected to the external cooling equipment on both sides of the cooling roller body 1, so that the cooling liquid circulates, and the rotating shaft 14 rotates under the drive of the transmission ring 15, so as to rotate the cooling liquid at the position of the cooling thin layer 12 to avoid uneven heating of the cooling liquid in this part, thereby affecting the cooling effect of the PVC film, and ensuring that the PVC film in contact with the cooling roller body 1 is uniformly cooled and contacted. At the same time, the cooling thin layer 12 arranged on the surface of the cooling roller body is a ceramic structure with good conductivity, which can enhance its cooling conduction effect;

[0037] Auxiliary parts 2 are arranged on the left and right sides of the cooling roller body 1, and the mounting plate 21 is equipped with a cooling fan, and the cold air can flow to the outside through the mesh ring 22 to fully contact the surface of the PVC film with cold air, thereby achieving internal and external cooling.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cooling device for a PVC heat shrink film stretching process, comprising a cooling roller body (1), auxiliary parts (2) arranged on the left and right sides of the cooling roller body (1), and a rotating rod (3) for rotating the cooling roller body (1), characterized in that: The cooling roller body (1) comprises a roller sleeve (11), a cooling thin layer (12) which is evenly distributed on the surface of the roller sleeve (11) and is an integrated structure, a cooling cavity (13) arranged inside the roller sleeve (11), a rotating shaft (14) which is evenly and equidistantly installed on the inner wall of the cooling cavity (13), and a transmission ring (15) for synchronous transmission of the rotating shaft (14), and the auxiliary component (2) comprises a mounting plate (21) and a mesh plate ring (22) arranged on the surface of the mounting plate (21).

2. A cooling device for a PVC heat shrinkable film stretching process according to claim 1, characterized in that: The cooling thin layer (12) is installed corresponding to the rotating shaft (14), and the cooling thin layer (12) is made of ceramic.

3. A cooling device for a PVC heat shrinkable film stretching process according to claim 1, characterized in that: The cooling cavity (13) is filled with circulating cooling liquid.

4. A cooling device for a PVC heat shrinkable film stretching process according to claim 1, characterized in that: The transmission ring (15) is connected to the rotating rod (3).

5. A cooling device for a PVC heat shrinkable film stretching process according to claim 1, characterized in that: The mounting plate (21) is interlocked with the cooling roller body (1).

6. A cooling device for a PVC heat shrinkable film stretching process according to claim 1, characterized in that: The interior of the mounting plate (21) is a hollow structure, and a cold air flow blowing toward the outside is provided inside.

7. A cooling device for a PVC heat shrinkable film stretching process according to claim 1, characterized in that: The mounting plate (21) is provided with a cooling fan.

8. A cooling device for a PVC heat shrinkable film stretching process according to claim 1, characterized in that: The surfaces of both sides of the cooling roller body (1) are provided with connection holes for connecting with external cooling equipment.

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