Drying device for plastic film production

Abstract

The utility model discloses a drying device for plastic film production, which comprises a casing, a conveying component, a drying component and a cooling component, and the conveying component is arranged in an inner cavity in a penetrating manner along a first direction; the drying assembly comprises a heat conducting plate, a heating body, an airflow generating part and a first air pipe, the heat conducting plate is arranged in the inner cavity and located above the conveying assembly, a containing cavity is defined in the heat conducting plate, the heating body is arranged in the containing cavity, a plurality of blowing holes communicated with the containing cavity are formed in the lower surface of the heat conducting plate, and the airflow generating part is arranged at the top of the machine shell; one end of the first air pipe is connected with the air outlet end of the airflow generating piece, and the other end of the first air pipe extends into the inner cavity to communicate with the containing cavity; and the cooling assembly is used for blowing cold air into the inner cavity so as to cool the dried plastic film. According to the drying device, the plastic films can be cooled while being dried, it is ensured that the temperature of the dried plastic films can be rapidly recovered, and the plastic films can be stacked in a centralized mode conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of drying, in particular to a drying device for producing plastic films. Background Art

[0002] Plastic film refers to a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, which is used for packaging and as a coating layer. Plastic packaging and plastic packaging products occupy an increasingly larger share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields. Among them, food packaging accounts for the largest proportion, such as beverage packaging, quick-frozen food packaging, steamed food packaging, fast food packaging, etc. These products have brought great convenience to people's lives.

[0003] After the plastic film is produced, it needs to be printed with a pattern. After printing, a drying device is needed to dry the plastic film to solidify the pattern on the plastic film and prevent the printed pattern from becoming blurred. Currently, most drying devices use electric heating to increase the temperature on the plastic film conveyor line to dry the plastic film. After drying, there will be a certain amount of residual temperature on the outside of the plastic film, which will affect the physical state of the plastic film. The temperature will change the shape of the plastic film accordingly, so that during the conveying and drying process, the bottom surface of the plastic film may adhere to the conveyor belt after heating, making it difficult to collect the plastic film. Utility Model Content

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a drying device for plastic film production.

[0005] The present application provides a drying device for producing plastic films, comprising:

[0006] The housing defines an inner cavity;

[0007] a conveying assembly, which is arranged in the inner cavity along a first direction and is used to convey the plastic film to be dried from one side of the housing to the other side through the inner cavity;

[0008] A drying assembly, comprising a heat conducting plate, a heating element, an airflow generating element, and a first air pipe, wherein the heat conducting plate is disposed in the inner cavity and above the conveying assembly, the interior of the heat conducting plate defines a receiving cavity, the heating element is disposed in the receiving cavity, and a lower surface of the heat conducting plate is provided with a plurality of air blowing holes communicating with the receiving cavity, the airflow generating element is disposed at the top of the housing, one end of the first air pipe is connected to the air outlet end of the airflow generating element, and the other end of the first air pipe extends into the inner cavity and communicates with the receiving cavity;

[0009] The cooling component is used for blowing cold air into the inner cavity to cool the dried plastic film.

[0010] In a possible embodiment, the drying assembly further includes an air guide nozzle, which is installed at the blowing hole and is used to blow the hot air in the inner cavity toward the plastic film passing thereunder.

[0011] In a possible embodiment, the airflow generating member includes a box body and a fan, the box body is installed on the top of the casing, the fan is rotatably installed on the top of the box body for introducing external air into the box body, and the first air pipe is connected to the interior of the box body.

[0012] In a possible embodiment, the cooling assembly includes a mounting plate, a cooling fan and a second air duct. The mounting plate is arranged in the inner cavity and is arranged side by side on one side of the heat conduction plate. A chamber is defined inside the mounting plate. An air outlet connected to the chamber is provided on the lower surface of the mounting plate. The cooling fan is arranged at the top of the casing. One end of the second air duct is connected to the air outlet end of the cooling fan, and the other end of the second air duct extends into the inner cavity and is connected to the chamber.

[0013] In a possible embodiment, it further includes a connecting column and a driving member, the driving member is installed on the top of the casing, and the output end of the driving member passes through the top of the casing and extends into the inner cavity to be connected to one end of the connecting column, and the other end of the connecting column is connected to the upper surface of the mounting plate.

[0014] In a possible implementation manner, a control valve is provided on the first air pipe and / or the second air pipe.

[0015] In a possible embodiment, the conveying mechanism includes a bracket, a conveyor belt and a power piece. The bracket is arranged in the housing along a first direction, and an active roller and a driven roller are respectively provided at both ends of the bracket. A conveyor belt is wound between the active roller and the driven roller, and one end of the active roller is transmission-connected to the power piece.

[0016] In a possible implementation, a driving wheel is provided at the power output end of the power member, a driven wheel is provided at one end of the driving roller, and a transmission belt is connected between the driving wheel and the driven wheel.

[0017] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0018] The plastic film to be dried is placed on the conveying mechanism, and under the action of the conveying mechanism, the plastic film to be dried passes through the inner cavity in sequence. During this process, the heating element generates heat and generates heat in the accommodating cavity, and the airflow generating member is used to accelerate the flow of hot air in the accommodating cavity, so that the hot air is blown out from the blowing hole and acts on the plastic film passing under the heat conducting plate to achieve drying of the plastic film. Then, under the action of the conveying mechanism, the dried plastic film passes under the cooling component and is cooled by the blown cold air to reduce the external temperature of the plastic film. In other words, the drying device can achieve drying of the plastic film while also performing a cooling process to eliminate the influence of the residual heat after drying on the shape of the plastic film, ensure that the temperature of the plastic film after drying can be quickly restored, and facilitate the centralized stacking of the plastic film. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a drying device for plastic film production according to the present invention;

[0020] Figure 2 This is a structural schematic diagram of a drying device for plastic film production according to the present invention from another perspective;

[0021] Figure 3 This is a structural diagram of a drying component and a cooling component in a drying device for plastic film production according to the present invention;

[0022] Figure 4 The utility model is a schematic diagram of the interior of a heat conducting plate in a drying device for producing plastic films.

[0023] Figure Number:

[0024] 10. Casing; 20. Conveying assembly; 21. Bracket; 22. Conveyor belt; 23. Power component; 24. Driving wheel; 25. Driven wheel; 30. Drying assembly; 31. Heat conducting plate; 31a. Accommodating cavity; 31b. Air blowing hole; 32. Air flow generating component; 321. Box; 322. Fan; 33. First air pipe; 40. Cooling assembly; 41. Cooling fan; 42. Second air pipe; 43. Mounting plate; 50. Driving component; 60. Connecting column. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the present technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0026] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, and they can be internal connections between two elements or interactions between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", and "third" are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", and "third" can explicitly or implicitly include one or more of these features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present invention with unnecessary detail.

[0028] like Figures 1 to 4 As shown, a drying device for plastic film production according to an embodiment of the present invention includes a housing 10 , a conveying assembly 20 , a drying assembly 30 and a cooling assembly 40 .

[0029] Specifically, the housing 10 defines an inner cavity. The conveying assembly 20 extends through the inner cavity along a first direction and is used to pass the plastic film to be dried from one side of the housing 10 to the other side of the inner cavity. The drying assembly 30 includes a heat conducting plate 31, a heating element, an airflow generating element 32, and a first air pipe 33. The heat conducting plate 31 is disposed within the inner cavity and is located above the conveying assembly 20. The heat conducting plate 31 defines an interior cavity 31a, in which the heating element is disposed. The lower surface of the heat conducting plate 31 is provided with a plurality of air blowing holes 31b that communicate with the accommodating cavity 31a. The airflow generating element 32 is disposed at the top of the housing 10. One end of the first air pipe 33 is connected to the air outlet of the airflow generating element 32, and the other end of the first air pipe 33 extends into the inner cavity and communicates with the accommodating cavity 31a. The cooling assembly 40 is used to blow cold air into the inner cavity to cool the dried plastic film.

[0030] Here, it should be noted that the "first direction" mentioned above is fictitious for the purpose of describing the position of the conveying device. Specifically in this embodiment, the "first direction" refers to the direction in which the plastic film is conveyed. Figure 1 The X direction in .

[0031] For example, the airflow generating member 32 is configured to draw air into the accommodating chamber 31a through the first air pipe 33, thereby accelerating the flow of hot air within the accommodating chamber 31a. The hot air is then blown out through the air blowing holes 31b onto the plastic film passing beneath the heat conducting plate 31, thereby drying the plastic film. Therefore, the airflow generating member 32 can be any conventional component capable of accelerating airflow, and this is not a limitation.

[0032] The drying device for plastic production of the present application places the plastic film to be dried on a conveying mechanism. Under the action of the conveying mechanism, the plastic film to be dried passes through the inner cavity in sequence. During this process, the heating element generates heat and generates heat in the accommodating cavity 31a. The airflow generating member 32 is used to accelerate the flow of hot air in the accommodating cavity 31a, and then the hot air is blown out from the blowing hole 31b and acts on the plastic film passing under the heat conducting plate 31, thereby drying the plastic film. Then, under the action of the conveying mechanism, the dried plastic film passes under the cooling assembly 40 and is cooled by the blown cold air to reduce the external temperature of the plastic film. In other words, the drying device can achieve the purpose of drying the plastic film while also performing a cooling process to eliminate the influence of the residual heat after drying on the morphology of the plastic film, ensure that the temperature of the plastic film after drying can be quickly restored, and facilitate the centralized stacking of the plastic film.

[0033] In one possible embodiment, the drying assembly 30 further includes an air guide nozzle mounted at the air hole 31b, which is used to blow the hot air in the inner cavity toward the plastic film passing beneath it. This accelerates the flow of hot air within the accommodating cavity 31a after passing through the airflow generating member 32. The hot air is then directed by the heat conduction nozzle and blown toward the plastic film passing beneath the heat conducting plate 31, thereby drying the plastic film. This allows the hot air to be more precisely directed toward the plastic film, further improving drying efficiency.

[0034] In one possible embodiment, the airflow generating member 32 includes a housing 321 and a fan 322. The housing 321 is mounted on the top of the housing 10. The fan 322 is rotatably mounted on the top of the housing 321 to introduce external air into the housing 321. The first air pipe 33 is connected to the interior of the housing 321. Thus, the rotation of the fan 322 allows external air to enter the housing 321, thereby generating a flow of air within the housing 321. The air then flows through the first air pipe 33 into the accommodating chamber 31a, accelerating the hot air within the accommodating chamber 31a to be blown out through the air holes 31b. This effectively improves the drying efficiency compared to a method where the hot air is simply diffused naturally.

[0035] In one possible embodiment, the cooling assembly 40 includes a mounting plate 43, a cooling fan 41 and a second air pipe 42. The mounting plate 43 is arranged in the inner cavity and is arranged side by side on one side of the heat conduction plate 31. The interior of the mounting plate 43 is defined to form a chamber. The lower surface of the mounting plate 43 is provided with an air outlet connected to the chamber. The cooling fan 41 is arranged at the top of the casing 10. One end of the second air pipe 42 is connected to the air outlet end of the cooling fan 41, and the other end of the second air pipe 42 extends into the inner cavity and is connected to the chamber.

[0036] In a possible embodiment, it also includes a connecting column 60 and a driving member 50, the driving member 50 is installed on the top of the housing 10, and the output end of the driving member 50 passes through the top of the housing 10 and extends into the inner cavity to be connected to one end of the connecting column 60, and the other end of the connecting column 60 is connected to the upper surface of the mounting plate 43.

[0037] For example, the driving member 50 can be a pneumatic cylinder, whose piston rod can be extended and retracted to drive the connecting column 60. Since the other end of the connecting column 60 is connected to the upper surface of the user mounting plate 43, the mounting plate 43 can be moved closer to or further away from the conveying mechanism, thereby controlling the distance between the blown gas and the plastic film, effectively accelerating the cooling of the dried plastic film. Furthermore, it should be noted that the second air pipe 42 is a retractable hose to prevent damage to the second air pipe 42 caused by stretching when the mounting plate 43 moves.

[0038] In a possible embodiment, a control valve is provided on the first air pipe 33 and / or the second air pipe 42. In this way, the hot air or cooling air blown out can be controlled by the control valve to meet different production requirements.

[0039] In a possible embodiment, the conveying mechanism includes a bracket 21, a conveyor belt 22 and a power piece 23. The bracket 21 is arranged in the housing 10 along the first direction, and an active roller and a driven roller are respectively provided at both ends of the bracket 21. The conveyor belt 22 is wound between the active roller and the driven roller, and one end of the active roller is transmission-connected to the power piece 23.

[0040] Specifically, a driving wheel 24 is provided at the power output end of the power member 23 , a driven wheel 25 is provided at one end of the driving roller, and a transmission belt is connected between the driving wheel 24 and the driven wheel 25 .

[0041] For example, when the plastic film needs to be dried, the power output end of the power member 23 is used to drive the driving wheel 24 to rotate. Since a transmission belt is connected between the active roller and the driven wheel 25, and the driven wheel 25 is installed at one end of the active roller, the active roller is driven to rotate, and the conveyor belt 22 wound between the active roller and the driven roller is driven to rotate, so that the plastic film placed on the conveyor belt 22 automatically passes through the heat conduction plate 31 and the mounting plate 43 in turn, thereby achieving drying and cooling of the plastic film.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A drying device for plastic film production, characterized in that: include: The housing defines an inner cavity; a conveying assembly, which is arranged in the inner cavity along a first direction and is used to convey the plastic film to be dried from one side of the housing to the other side through the inner cavity; A drying assembly, comprising a heat conducting plate, a heating element, an airflow generating element, and a first air pipe, wherein the heat conducting plate is disposed in the inner cavity and above the conveying assembly, the interior of the heat conducting plate defines a receiving cavity, the heating element is disposed in the receiving cavity, and a lower surface of the heat conducting plate is provided with a plurality of air blowing holes communicating with the receiving cavity, the airflow generating element is disposed at the top of the housing, one end of the first air pipe is connected to the air outlet end of the airflow generating element, and the other end of the first air pipe extends into the inner cavity and communicates with the receiving cavity; The cooling component is used for blowing cold air into the inner cavity to cool the dried plastic film.

2. The drying device for plastic film production according to claim 1, characterized in that: The drying component further comprises an air guide nozzle, which is installed at the air blowing hole and is used for blowing the hot air in the inner cavity toward the plastic film passing thereunder.

3. The drying device for plastic film production according to claim 1, characterized in that: The airflow generating member includes a box body and a fan. The box body is installed on the top of the casing. The fan is rotatably installed on the top of the box body for introducing external air into the box body. The first air pipe is connected to the interior of the box body.

4. The drying device for plastic film production according to claim 1, characterized in that: The cooling assembly includes a mounting plate, a cooling fan and a second air duct. The mounting plate is arranged in the inner cavity and is arranged side by side on one side of the heat conduction plate. A chamber is defined inside the mounting plate. An air outlet connected to the chamber is provided on the lower surface of the mounting plate. The cooling fan is arranged at the top of the casing. One end of the second air duct is connected to the air outlet end of the cooling fan, and the other end of the second air duct extends into the inner cavity and is connected to the chamber.

5. The drying device for producing plastic film according to claim 4, characterized in that: It also includes a connecting column and a driving member, the driving member is installed on the top of the casing, and the output end of the driving member passes through the top of the casing and extends into the inner cavity to be connected to one end of the connecting column, and the other end of the connecting column is connected to the upper surface of the mounting plate.

6. The drying device for producing plastic film according to claim 4, characterized in that: The first air pipe and / or the second air pipe is provided with a control valve.

7. The drying device for producing plastic film according to claim 1, characterized in that: The conveying mechanism includes a bracket, a conveyor belt and a power piece. The bracket is arranged in the housing along a first direction, and a driving roller and a driven roller are respectively provided at both ends of the bracket. A conveyor belt is wound between the driving roller and the driven roller, and one end of the driving roller is transmission-connected to the power piece.

8. The drying device for plastic film production according to claim 1, characterized in that: A driving wheel is provided at the power output end of the power member, a driven wheel is provided at one end of the driving roller, and a transmission belt is connected between the driving wheel and the driven wheel.

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