Air suction structure for TDO of PET film

Abstract

The utility model relates to an air suction structure for TDO of a PET film, which comprises an air suction shell, an air inlet pipe connected with a TDO air port is formed on the air suction shell, the air suction shell is connected with an air duct assembly, the air duct assembly comprises an air duct shell connected with the air suction shell and an air duct pipe connected with the air duct shell, and the air duct pipe is connected with the air duct shell. A first air pipe and a second air pipe are arranged on the two sides of an air outlet of the air duct pipe, a flow meter is arranged in the air suction shell and connected with a controller, the controller is used for receiving wind power measured by the flow meter, and an opening and closing assembly communicated with the air duct shell and the air suction shell is arranged outside the air duct shell. In the film production process, oligomer can be generated, and the surface quality of the film is influenced, but the air suction system is additionally arranged at the TDO air port to suck the oligomer on the surface of the film, so that the cleanliness of the surface of the film is improved, the product quality is improved, and further processing of subsequent products is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of film processing equipment, in particular to an air suction structure for a TDO of a PET film. Background Art

[0002] During the film production process, especially in the TDO stretching section (transverse stretching) of the film, a large amount of oligomers will be generated, which will affect the surface quality of the film and thus affect subsequent processing. Therefore, it is necessary to design a structure that can meet the requirement of sucking oligomers. Summary of the Invention

[0003] The purpose of the utility model is to provide an air suction structure for a TDO of a PET film to solve the above technical problems.

[0004] To achieve the above purpose, the utility model provides the following technical solutions.

[0005] An air suction structure for a TDO of a PET film, characterized in that it includes an air suction housing, an air inlet pipe connected to the TDO air outlet is formed on the air suction housing, the air suction housing is connected with an air duct assembly, the air duct assembly includes an air duct housing connected to the air suction housing and an air duct pipe connected to the air duct housing, a first air duct and a second air duct are arranged on both sides of the air outlet of the air duct pipe, a flow meter is arranged in the air suction housing, the flow meter is connected with a controller, the controller is used to receive the wind force measured by the flow meter, an opening and closing assembly connecting the air duct housing and the air suction housing is arranged outside the air duct housing, the opening and closing assembly includes brackets arranged on both sides of the air duct housing, a driving cylinder is arranged on the brackets, the output end of the driving cylinder is connected with an opening and closing door, a slot is arranged on the corresponding air duct housing for the opening and closing door to pass through, the controller controls the lifting of the driving cylinder according to the air volume measured by the flow meter so that the flow rate between the air duct housing and the air suction housing is different, and an air suction fan is arranged on the air inlet pipe of the air suction housing.

[0006] The utility model is further arranged such that the air duct pipe includes a first air duct pipe and a second air duct pipe, and the first air duct pipe and the second air duct pipe are symmetrically arranged on one side of the air duct housing.

[0007] The utility model is further arranged such that the first air duct pipe and the second air duct pipe are inclined.

[0008] The utility model is further arranged such that air guide boxes are arranged at the air outlet of the first air duct and the second air duct, an adsorption cylinder is arranged between the air guide boxes, an adsorption net is arranged in the adsorption cylinder, and the adsorption cylinder is connected with the air guide box by a thread.

[0009] The utility model is further arranged such that the air duct housing and the air suction housing are connected by a connecting flange.

[0010] Advantages of the present utility model: During the production process of the film, oligomers are generated, which affect the surface quality of the film. The present utility model installs a suction system at the TDO air outlet to suck the oligomers on the film surface, improve the cleanliness of the film surface, enhance the product quality, and facilitate the further processing of subsequent products. Description of the Drawings

[0011] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0012] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model.

[0013] Figure 2 It is a cross-sectional view of an embodiment of the present utility model.

[0014] Reference numerals: 10, suction housing; 20, air inlet pipe; 30, air duct assembly; 301, air duct housing; 302, first air duct pipe; 303, second air duct pipe; 40, connecting flange; 50, first air duct; 60, second air duct; 70, opening and closing assembly; 701, opening and closing door; 702, bracket; 703, driving cylinder; 80, air guide box; 90, adsorption cylinder; Detailed Embodiments

[0015] The following will describe in detail the embodiments of the present application in conjunction with the drawings and embodiments, so as to fully understand how the present application uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0016] As Figure 1 - Figure 2 shown, the present utility model is a suction structure for the TDO of a PET film, including a suction housing 10. An air inlet pipe 20 connected to the TDO air outlet is formed on the suction housing 10. The suction housing 10 is connected to an air duct assembly 30. The air duct assembly 30 includes an air duct housing 301 connected to the suction housing 10 and an air duct pipe connected to the air duct housing 301. The air duct housing 301 and the suction housing 10 are connected through a connecting flange 40.

[0017] On both sides of the air outlet of the air duct pipe, a first air duct 50 and a second air duct 60 are provided. A flow meter is arranged inside the air suction housing 10. The flow meter is connected to a controller, and the controller is used to receive the wind force measured by the flow meter. An opening and closing assembly 70 connecting the air duct housing 301 and the air suction housing 10 is arranged outside the air duct housing 301. The opening and closing assembly 70 includes brackets 702 arranged on both sides of the air duct housing 301. A driving cylinder 703 is arranged on the brackets 702. The output end of the driving cylinder 703 is connected to an opening and closing door 701. A slot is arranged on the corresponding air duct housing 301 for the opening and closing door 701 to pass through. The controller controls the lifting of the driving cylinder 703 according to the air volume measured by the flow meter, so that the flow rate between the air duct housing 301 and the air suction housing 10 is different. An air suction fan (not shown) is arranged on the air inlet pipe 20 of the air suction housing 10.

[0018] In the present utility model, the air duct pipe includes a first air duct pipe 302 and a second air duct pipe 303. The first air duct pipe 302 and the second air duct pipe 303 are symmetrically arranged on one side of the air duct housing 301. In the present utility model, the setting direction of the opening and closing door 701 is perpendicular to the setting direction of the air duct pipe, which ensures that both the first air duct pipe 302 and the second air duct pipe 303 can be used when the opening and closing door 701 is opened. The first air duct pipe 302 and the second air duct pipe 303 are arranged obliquely.

[0019] Air guide boxes 80 are arranged at the air outlets of the first air duct 50 and the second air duct 60. An adsorption cylinder 90 is arranged between the air guide boxes 80. An adsorption net is arranged inside the adsorption cylinder 90. The adsorption cylinder 90 is connected to the air guide box 80 by a threaded connection. The adsorption net in the adsorption cylinder 90 is used to adsorb oligomers. At the same time, the adsorption cylinder 90 is detachably connected by a thread and can be replaced.

[0020] In view of the problem that oligomers are generated during the film production process, which affects the surface quality of the film, the present utility model installs a suction system at the TDO air outlet to suck the oligomers on the film surface, improve the surface cleanliness of the film, improve the product quality, and facilitate the further processing of subsequent products. In addition, the flow rate is adjusted according to the size of the air volume through the flow meter, the controller and the driving cylinder 703, so that the air volume can be accurately controlled and the suction effect can be improved.

[0021] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different names to refer to the same component. The specification and claims do not distinguish components by the difference in names, but by the difference in their functions. As used throughout the specification and claims, the term "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve technical problems within a certain error range and basically achieve the technical effects.

[0022] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a commodity or system including a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the commodity or system including the element.

[0023] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept herein through the above teachings or the technology or knowledge in the relevant field. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A suction structure for TDO of PET film, characterized in that: The invention comprises an air suction shell, an air inlet pipe connected to the TDO air outlet is formed on the air suction shell, the air suction shell is connected to an air duct assembly, the air duct assembly comprises an air duct shell connected to the air suction shell and an air duct pipe connected to the air duct shell, a first air duct and a second air duct are arranged on both sides of the air outlet of the air duct pipe, a flow meter is arranged in the air suction shell, the flow meter is connected to a controller, the controller is used to receive the wind force measured by the flow meter, an opening and closing assembly for connecting the air duct shell and the air suction shell is arranged outside the air duct shell, the opening and closing assembly comprises brackets arranged on both sides of the air duct shell, a driving cylinder is arranged on the bracket, an opening and closing door is connected to the output end of the driving cylinder, a slot is correspondingly arranged on the air duct shell for the opening and closing door to pass through, the controller controls the lifting and lowering of the driving cylinder according to the air volume measured by the flow meter so that the flow rate between the air duct shell and the air suction shell is different, and an air suction fan is arranged on the air inlet pipe of the air suction shell.

2. The air suction structure of TDO for PET film according to claim 1, characterized in that: The air duct pipe comprises a first air duct pipe and a second air duct pipe, and the first air duct pipe and the second air duct pipe are symmetrically arranged on one side of the air duct housing.

3. The air suction structure of TDO for PET film according to claim 2, characterized in that: The first air duct pipe and the second air duct pipe are arranged obliquely.

4. The air suction structure of TDO for PET film according to claim 1, 2 or 3, characterized in that: Air guide boxes are arranged at the air outlets of the first air duct and the second air duct, an adsorption cylinder is arranged between the air guide boxes, an adsorption net is arranged inside the adsorption cylinder, and the adsorption cylinder is connected to the air guide box by threads.

5. The air suction structure of TDO for PET film according to claim 1, characterized in that: The air duct housing and the air suction housing are connected via a connecting flange.

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