Packaging film blow molding device
The dual cooling system solves the problems of film sticking and wrinkling during the film blowing process. The combination of water circulation and air cooling achieves uniform cooling of the film, improving production efficiency and quality.
Patent Information
- Application Number
- CN202423247184.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-27
AI Technical Summary
During the film blowing process, the film is at a high temperature when it is first taken out of the blow molding machine. Directly using guide rollers to pull the film can easily cause the film to stick and wrinkle, affecting the output and quality.
A dual cooling system is adopted, including a first cooling component and a second cooling component. The first cooling component removes heat through a water circulation pipe, while the second cooling component adopts air-cooled non-contact cooling, combined with a heat-conducting metal roller and an air-cooled trapezoidal air guide cavity, to achieve uniform cooling of the film.
It effectively improves the cooling efficiency of the film, reduces film sticking and wrinkling, and improves production efficiency and quality.
Smart Images
Figure CN223720181U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of film processing, in particular to a packaging film blowing device. BACKGROUND
[0002] The plastic film refers to a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, which can be used for packaging and used as a film layer. The proportion of plastic packaging and plastic packaging products in the market is increasing, especially the composite plastic soft packaging, which has been widely used in food, medicine, chemical industry and other fields. The plastic film blowing molding is to extrude plastic into a thin tube, then blow the plastic with compressed air while hot, and then obtain a cylindrical film product after cooling and setting. Finally, the plastic film can be obtained by cutting.
[0003] In the film blowing process, when the film is just guided out of the blowing machine, the film temperature is still relatively high. If a general guide roller is directly used for traction, sticking phenomenon is more likely to occur in practice, which can easily cause film wrinkles and affect yield and quality. CONTENT OF THE INVENTION
[0004] The application aims to provide a packaging film blowing device to solve at least one of the above technical problems.
[0005] In order to solve the above technical problems, the application provides a packaging film blowing device, which comprises a base, a blowing machine is arranged on the base, and an extrusion outlet of the blowing machine faces upward;
[0006] A first cooling assembly comprises a first support frame, a water tank, a cooling module, a first cooling roller and a water circulation pipeline. The water circulation pipeline passes through the shaft of the first cooling roller, and the water inlet and outlet of the water circulation pipeline are connected to the water tank. The cooling module is arranged in the water tank and is used for cooling the water in the water tank. The water tank is arranged on the first support frame;
[0007] A second cooling assembly is arranged downstream of the first cooling assembly along the conveying direction of the film;
[0008] A guide roller assembly and a winding assembly are arranged between the second cooling assembly and the winding assembly. The winding assembly is used for winding the film;
[0009] In the implementation process, the film is first wound around the first cooling roller of the first cooling assembly, and then sequentially wound around the second cooling assembly and the guide roller assembly, and finally wound by the winding assembly after the film blowing machine blows the film; in this scheme, the water circulation pipeline passes through the shaft center of the first cooling roller, the water circulation pipeline realizes the circulation of the water body of the water tank, the water body in the water tank is cooled by the cooling mold, and the water circulation pipeline can exchange heat with the first cooling roller to take away the heat on the first cooling roller to realize the cooling of the film wound around the first cooling roller. The film cooled by the first cooling roller is further cooled by the second cooling assembly, which can effectively improve the cooling efficiency of the film and reduce the phenomenon of film sticking and wrinkling, thereby improving the production efficiency and quality of the film.
[0010] Preferably, the second cooling assembly comprises a second support frame, air outlet rollers are arranged on the second support frame in an up-down distribution, air outlets are formed on the air outlet rollers, and the air outlets of the two air outlet rollers are oppositely arranged, and the film passes between the two air outlet rollers;
[0011] In the implementation process, the first cooling assembly in this scheme adopts a cooling mode of over-roller contact, and the second cooling assembly further adopts a non-contact air cooling mode. Since the cooling temperature requirement of secondary cooling is not high, the air cooling plus liquid cooling mode can make the cooling gradient more gentle, and the cost is also controlled.
[0012] Preferably, the end of the air outlet roller is connected with an air guide pipe, and an air guide cavity is formed in the air outlet roller and communicates with the air guide pipe and the air outlet;
[0013] In the implementation process, the air guide pipe can be connected with an external ventilation mechanism, air flows into the air guide cavity through the air guide pipe, and then flows out through the air outlet.
[0014] Preferably, the longitudinal section of the air guide cavity is trapezoidal, and gradually decreases from the air guide pipe to the direction away from the air guide pipe;
[0015] In the implementation process, the shape of the air guide cavity is further improved in this scheme, that is, the cavity on the side away from the air guide pipe is smaller, and the cavity on the side close to the air guide pipe is larger, so that the air outlet at each position can be as uniform as possible to improve the uniformity of the film cooling.
[0016] Preferably, the first cooling assembly further comprises a second cooling roller, the bottom surface of the film first passes through the first cooling roller and then the top surface passes through the second cooling roller, and the second cooling roller is closer to the base than the first cooling roller;
[0017] The first cooling roller and the second cooling roller are both connected with corresponding water circulation pipelines.
[0018] Preferably, the first cooling roller and the second cooling roller are both made of heat-conducting metal
[0019] In the above implementation process, the first cooling roller and the second cooling roller are both made of heat-conducting metal, that is, they can better achieve heat conduction to the film, thereby further cooperating with the water circulation pipeline to achieve heat exchange, improve the cooling efficiency, and reduce the probability of film sticking.
[0020] Preferably, the winding assembly comprises a third support frame, a winding roller, and a rotary driving member;
[0021] The winding roller is rotatably arranged on the third support frame, and the rotary driving member is arranged on the third support frame and is used to drive the winding roller to rotate;
[0022] In the above implementation process, the rotary driving member drives the winding roller to rotate, thereby providing power for the winding and rolling of the film, and achieving the winding of the film.
[0023] Preferably, the guide roller assembly comprises a fourth support frame and a guide roller main body arranged on the fourth support frame.
[0024] Compared with the prior art, the beneficial effects of the present application are that in the present scheme, the water circulation pipeline passes through the first cooling roller shaft, the water circulation pipeline realizes the circulation of the water body in the water tank, and the water body in the water tank is cooled by the cooling mold. In this way, the water circulation pipeline can exchange heat with the first cooling roller, and take away the heat on the first cooling roller, so as to realize the cooling of the film winding through the first cooling roller. The film cooled by the first cooling roller is further cooled by the second cooling assembly. Under the double cooling, the cooling efficiency of the film can be effectively improved, thereby reducing the phenomenon of film sticking and the phenomenon of film wrinkle, improving the film production efficiency and production quality. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0026] Figure 1 is a schematic diagram of the overall structure of one embodiment of the present application;
[0027] Figure 2 is a schematic diagram of the internal structure of the air outlet roller of one embodiment of the present application;
[0028] Wherein: 10, base; 11, blow molding machine; 21, first support frame; 22, water tank; 23, cooling module; 24, water circulation pipeline; 25, first cooling roller; 26, second cooling roller; 31, second support frame; 32, air outlet roller; 33, air guide pipe; 41, fourth support frame; 42, guide roller main body; 51, third support frame; 52, winding roller; 53, rotary driving part. DETAILED DESCRIPTION
[0029] In the following, a plurality of embodiments of the present application will be disclosed with reference to the drawings. For the purpose of clear illustration, a number of practical details will be described in the following description. However, it should be appreciated that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in the drawings in a simple schematic manner.
[0030] It should be noted that all directional references, such as upper, lower, left, right, front, rear, etc., are in relation to the exemplary embodiment shown in the drawings and are used in connection with the description of the application. These directional references are not intended to limit the application to the orientation shown in the drawings.
[0031] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and does not mean to specially indicate the order or sequence, nor to limit the present application. It is merely to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features defined as "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of a person skilled in the art. When the combination of technical solutions is contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.
[0032] In order to further understand the utility model content, characteristics and effects of the present application, the following examples are given, and the details are described as follows with reference to the drawings:
[0033] Embodiment
[0034] In the film blowing process, when the film is just guided out of the blowing machine, the film temperature is still relatively high. If a general guide roller is used for traction directly, sticking phenomenon is more likely to occur in practice, which can easily cause film wrinkles and affect yield and quality. In order to solve the above technical problem, the present embodiment provides the following technical solutions:
[0035] Specifically, please refer toFigures 1-2 The embodiment provides a packaging film blowing device, which comprises a base 10, a first cooling assembly, a second cooling assembly, a guide roller assembly and a winding assembly.
[0036] Specifically, a blowing machine 11 is arranged on the base 10, and an extrusion port of the blowing machine 11 faces upwards.
[0037] It should be noted that the blowing machine 11 is a relatively mature technology in the prior art, so the specific mechanism and working principle of the blowing machine 11 will not be described further, but it can be understood that it does not affect the overall understanding of the scheme by those skilled in the art.
[0038] Specifically, the first cooling assembly comprises a first support frame 21, a water tank 22, a cooling module 23, a first cooling roller 25 and a water circulation pipeline 24, the water circulation pipeline 24 passes through the axis of the first cooling roller 25, the water inlet and the water outlet of the water circulation pipeline 24 are connected with the water tank 22, the cooling module 23 is arranged on the water tank 22 and is used for cooling the water in the water tank 22, and the water tank 22 is arranged on the first support frame 21.
[0039] In some embodiments, the water tank 22 can comprise a main water tank 22 and an auxiliary water tank 22, the water inlet end of the water circulation pipeline 24 is connected with the auxiliary water tank 22, the water outlet end is connected with the main water tank 22, and the cooling module 23 is arranged on the auxiliary water tank 22. It can be understood that the water circulation mechanism is a relatively mature technology in the prior art, and the present scheme applies it to the blowing cooling in combination with the cooling module 23.
[0040] Specifically, the second cooling assembly is arranged downstream of the first cooling assembly along the conveying direction of the film.
[0041] Specifically, the guide roller assembly is arranged between the second cooling assembly and the winding assembly, and the winding assembly is used for winding the film.
[0042] In the above scheme, after the film is blown out by the blowing machine 11, the film first passes through the first cooling roller 25 of the first cooling assembly, then passes through the second cooling assembly and the guide roller assembly in sequence, and finally is wound by the winding assembly. In the present scheme, the water circulation pipeline 24 passes through the axis of the first cooling roller 25, the water circulation pipeline 24 realizes the water circulation of the water tank 22, the water in the water tank 22 is cooled by the cooling module, and thus the water circulation pipeline 24 can exchange heat with the first cooling roller 25 to take away the heat on the first cooling roller 25, so as to realize the cooling of the film passing through the first cooling roller 25. The film cooled by the first cooling roller 25 is further cooled by the second cooling assembly, and the cooling efficiency of the film can be effectively improved under the double cooling, thereby reducing the phenomenon of film sticking and the phenomenon of film wrinkling, and improving the production efficiency and production quality of the film.
[0043] Specifically, the second cooling assembly comprises a second support frame 31, and air outlet rollers 32 are arranged on the second support frame 31 in a vertical distribution, air outlets are formed on the air outlet rollers 32, and the air outlets of the two air outlet rollers are oppositely arranged, and the film passes between the two air outlet rollers 32;
[0044] In the above scheme, the first cooling assembly in the scheme adopts a cooling mode of roller contact, and the second cooling assembly further adopts a non-contact air cooling mode. Since the cooling temperature requirement of secondary cooling is not high, the air cooling plus liquid cooling mode is selected to make the cooling gradient more gentle, and the cost is also controlled.
[0045] Specifically, the end of the air outlet roller 32 is connected with an air guide pipe 33, and an air guide cavity is formed in the air outlet roller 32 and communicates with the air guide pipe 33 and the air outlet;
[0046] In the above scheme, the air guide pipe 33 can be connected with an external ventilation mechanism, air flows into the air guide cavity through the air guide pipe 33, and then is guided out through the air outlet.
[0047] Further, referring to Figure 2 , the longitudinal section of the air guide cavity is trapezoidal, and gradually decreases from the air guide pipe 33 to the direction away from the air guide pipe 33;
[0048] In the above scheme, the shape of the air guide cavity is further improved in the scheme, wherein the cavity on the side away from the air guide pipe 33 is smaller, and the cavity on the side close to the air guide pipe 33 is larger, so that the air outlet at each position can be as uniform as possible, so as to improve the uniformity of the film cooling.
[0049] Specifically, the first cooling assembly further comprises a second cooling roller 26, and the bottom surface of the film passes around the first cooling roller 25 first, and then the top surface passes around the second cooling roller 26 which is closer to the base 10 than the first cooling roller 25;
[0050] Further, the first cooling roller 25 and the second cooling roller 26 are both connected with corresponding water circulation pipes 24; in other embodiments, the water circulation pipes 24 of the first cooling roller 25 and the second cooling roller 26 are communicated.
[0051] In the above scheme, the first cooling roller 25 and the second cooling roller 26 cooperate to realize the cooling of the two sides of the film, so as to further improve the cooling efficiency and the cooling uniformity.
[0052] Specifically, the first cooling roller 25 and the second cooling roller 26 are both made of heat-conducting metal; further, the material can be stainless steel.
[0053] In the above scheme, the first cooling roller 25 and the second cooling roller 26 are both made of heat-conducting metal, that is, they can better achieve heat conduction to the film, so as to further cooperate with the water circulation pipeline 24 to achieve heat exchange, improve the cooling efficiency, and reduce the probability of film sticking.
[0054] Specifically, the winding assembly comprises a third support frame 51, a winding roller 52, and a rotary driving member 53.
[0055] Further, the winding roller 52 is rotatably arranged on the third support frame 51, and the rotary driving member 53 is arranged on the third support frame 51 and is used to drive the winding roller 52 to rotate.
[0056] In the above scheme, the rotary driving member 53 drives the winding roller 52 to rotate, thereby providing power for winding and winding of the film, and realizing winding of the film.
[0057] Specifically, the guide roller assembly comprises a fourth support frame 41 and a guide roller main body 42 arranged on the fourth support frame 41.
[0058] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiment all belong to the scope of the technical solution of the present application.
Claims
1. A packaging film blowing apparatus characterized by comprising: The base is provided with a blow molding machine, and an extrusion port of the blow molding machine faces upward; The first cooling assembly comprises a first support frame, a water tank, a cooling module, a first cooling roller and a water circulation pipeline, the water circulation pipeline passes through the shaft of the first cooling roller, the water inlet and the water outlet of the water circulation pipeline are connected to the water tank, the cooling module is arranged in the water tank and is used for cooling water in the water tank, and the water tank is arranged on the first support frame; The second cooling assembly is arranged downstream of the first cooling assembly along the conveying direction of the film; The guiding roller assembly is arranged between the second cooling assembly and the winding assembly, and the winding assembly is used for winding the film.
2. The packaging film blowing apparatus according to claim 1, characterized by: The second cooling assembly comprises a second support frame, air outlet rollers are arranged on the second support frame in an up-down distribution, air outlets are formed in the air outlet rollers, and the air outlets of the two air outlet rollers are arranged opposite to each other, and the film passes between the two air outlet rollers.
3. The packaging film blowing apparatus according to claim 2, characterized by: The end of the air outlet roller is connected to an air guide pipe, and an air guide cavity is formed in the air outlet roller and communicates with the air guide pipe and the air outlet.
4. The packaging film blowing apparatus according to claim 3, characterized by: The longitudinal section of the air guide cavity is trapezoidal, and the air guide cavity gradually decreases from the air guide pipe to a direction away from the air guide pipe.
5. The packaging film blowing apparatus according to claim 1, characterized by: The first cooling assembly further comprises a second cooling roller, the bottom surface of the film passes around the first cooling roller first and then the top surface of the film passes around the second cooling roller, and the second cooling roller is closer to the base than the first cooling roller. The first cooling roller and the second cooling roller are both connected to corresponding water circulation pipelines.
6. The packaging film blowing apparatus according to claim 5, characterized by: The first cooling roller and the second cooling roller are both made of heat-conducting metal.
7. A packaging film blowing apparatus according to any one of claims 1-6, characterized in that: The winding assembly comprises a third support frame, a winding roller and a rotary driving member. The winding roller is rotatably arranged on the third support frame, and the rotary driving member is arranged on the third support frame and is used for driving the winding roller to rotate.
8. The packaging film blowing apparatus according to claim 7, characterized by: The guiding roller assembly comprises a fourth support frame and a guiding roller body arranged on the fourth support frame.