Edge setting device for film casting and air gun for edge setting device

Abstract

The utility model belongs to the plastic forming technical field, concretely relates to a kind of film casting sheet with edge setting device and air gun for edge setting device, and the film casting sheet with edge setting device of the present application includes: extrusion die head, for extruding casting body;Cooling roller, below extrusion die head, for receiving casting body and cooling;Air bellow, it is arranged in the side of cooling roller, and make casting body be located between cooling roller and air bellow;A pair of air gun, it is arranged on air bellow, the air gun includes: airflow duct and air nozzle, the air nozzle rotationally arranged at the outlet of airflow duct, and the end of air nozzle is provided with strip-shaped air outlet;The film casting sheet with edge setting device and air gun for edge setting device set the air outlet of air nozzle as strip-shaped air outlet, when the side edge of casting body changes, just need to rotate air nozzle to adjust the inclination angle of strip-shaped air outlet and horizontal plane, make the long strip-shaped gas of air nozzle and the arc side of casting body tangent parallel, can produce stable suction to casting body.

Description

Technical Field

[0001] This utility model belongs to the field of plastic molding technology, specifically relating to cast film, and more particularly to a sizing device for thin film casting and an air gun for the sizing device. Background Technology

[0002] In the production process of cast film, a casting process is first carried out, and then the cast film produced in the casting process is extruded to form a thin film.

[0003] If the cast material extruded from the die does not have its edges fixed when it comes into contact with the cooling roller, the cast material will shrink and thicken, resulting in uneven crystallization.

[0004] In related technologies, air guns are generally used to blow air onto the outer sides of the cast body, creating negative pressure at the blowing point to generate suction on the corresponding sides of the cast body, thereby restricting the side position of the cast body.

[0005] However, when producing films of different specifications, the fluidity of the cast material extruded by the die head will be different, resulting in different side curvatures of the cast material. This makes it easy for the gas sprayed out to hit the cast material when adjusting the air gun to fix the edge laterally.

[0006] Therefore, how to solve the above problems is a problem that urgently needs to be solved by those skilled in the art.

[0007] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0008] This disclosure provides at least one edge-fixing device for thin film casting and an air gun for the edge-fixing device.

[0009] In a first aspect, embodiments of this disclosure provide a sizing device for thin film casting, comprising: an extrusion die for extruding a cast body; a cooling roller located below the extrusion die for receiving and cooling the cast body; a windbox disposed on one side of the cooling roller, with the cast body positioned between the cooling roller and the windbox; and a pair of air guns disposed on the windbox, each air gun comprising: an airflow pipe and an air nozzle, the air nozzle being rotatably disposed at the outlet of the airflow pipe, and the end of the air nozzle having a strip-shaped air outlet; wherein the air nozzle is adapted to adjust the tilt angle of the strip-shaped air outlet by rotation to fit the cast body.

[0010] In one alternative embodiment, the bellows is provided with a guide post, and the guide post is provided with a pair of sliders; wherein the airflow duct is connected to the corresponding slider.

[0011] In one alternative embodiment, the strip-shaped air outlet is opened radially along the air nozzle.

[0012] In one alternative embodiment, a retainer is fitted onto the airflow duct; wherein the retainer is connected to the air nozzle to fix the tilt angle of the strip-shaped air outlet.

[0013] In one alternative embodiment, the inner wall of the retainer is provided with an internal thread; the side wall of the air nozzle is provided with an external thread; wherein the retainer is threadedly connected to the air nozzle for locking.

[0014] In one alternative implementation, the airflow duct is made of stainless steel corrugated flexible tubing.

[0015] Secondly, this disclosure also provides an air gun for a fixed-edge device, comprising: an airflow pipe and an air nozzle; wherein the air nozzle is rotatably disposed at the outlet of the airflow pipe; the end of the air nozzle is provided with a strip-shaped air outlet; the air nozzle is adapted to adjust the tilt angle of the strip-shaped air outlet by rotation to adapt to the casting body.

[0016] In one alternative embodiment, the strip-shaped air outlet is opened radially along the air nozzle.

[0017] In one alternative embodiment, a retainer is fitted onto the airflow duct; wherein the retainer is connected to the air nozzle to fix the tilt angle of the strip-shaped air outlet.

[0018] The beneficial effect of this utility model is that the edge-fixing device for the thin film casting and the air gun of the edge-fixing device set the air outlet of the air nozzle as a strip-shaped air outlet, so that the cross-section of the gas sprayed from the air nozzle forms a long strip shape. When the side curvature of the casting body changes, it is only necessary to rotate the air nozzle to adjust the tilt angle between the strip-shaped air outlet and the horizontal plane, so that the long strip-shaped gas sprayed from the air nozzle is parallel to the tangent of the arc-shaped side of the casting body, thereby generating a stable suction force on the casting body.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a thin film casting edge fixing device provided in an embodiment of the present disclosure; Figure 2 This is a schematic diagram of the structure of an air gun provided in an embodiment of the present disclosure; Figure 3 A side view of a strip-shaped air outlet provided in an embodiment of this disclosure; Figure 4 This is a cross-sectional structural diagram of an air gun provided in an embodiment of this disclosure.

[0023] In the picture: Extrusion die 1, cast body 11; Cooling roller 2; Bellows 3, guide column 31, slider 32; 4. Air gun, 41. Airflow pipe, 42. Air nozzle, 421. Strip-shaped air outlet, 43. Fixing device. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the figures, the thickness of parts may be exaggerated or reduced for the purpose of effectively depicting the technical content.

[0026] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] At least one embodiment provides a sizing device for thin film casting, such as Figure 1 As shown, it includes: an extrusion die head 1, a cooling roller 2, a bellows 3, and a pair of air guns 4.

[0028] Specifically, the extrusion die 1 is used to extrude the cast body 11.

[0029] Specifically, the cooling roller 2 is located below the extrusion die 1. After the extrusion die 1 extrudes the cast body 11, the cast body 11 flows onto the cooling roller 2, thereby cooling it quickly.

[0030] Specifically, the air box 3 is set on one side of the cooling roller 2, and the cast body 11 is located between the cooling roller 2 and the air box 3, so as to blow air onto the cast body 11 on the cooling roller 2 to assist the cast body 11 in shaping.

[0031] Specifically, both air guns 4 are mounted on the bellows 3 and located on both sides of the casting body 11. They are used to blow air onto the outer edge of the casting body 11 to create negative pressure at the blowing point, thereby sucking the side of the casting body 11 for positioning.

[0032] When producing films of different specifications, the fluidity of the cast film 11 extruded by the extrusion die 1 is different, resulting in different curvatures on the sides of the cast film 11. This causes the gas to be sprayed onto the cast film 11 when the air gun 4 is adjusted laterally.

[0033] To solve the above problems, such as Figure 2 , Figure 3 As shown, in some embodiments, the air gun 4 includes an airflow duct 41 and an air nozzle 42.

[0034] Specifically, the air nozzle 42 is rotatably installed at the outlet of the airflow duct 41, and a strip-shaped air outlet 421 is provided at the end of the air nozzle 42.

[0035] In this embodiment, the air outlet of the nozzle 42 is set as a strip-shaped air outlet 421, so that the cross-section of the gas ejected from the nozzle 42 forms a long strip. When the side curvature of the cast body 11 changes, the nozzle 42 is rotated to adjust the tilt angle of the strip-shaped air outlet 421 with the horizontal plane, so that the length direction of the strip-shaped air outlet 421 is parallel to the tangent of the arc-shaped side of the cast body 11, thereby generating a stable suction force on the cast body 11.

[0036] like Figure 1 As shown, in some embodiments, the bellows 3 is provided with a guide post 31, and a pair of sliders 32 are provided on the guide post 31; wherein the airflow pipe 41 is connected to the corresponding slider 32.

[0037] Specifically, the lower surface of the slider 32 is in contact with the upper surface of the bellows 3 to prevent rotation.

[0038] In this embodiment, before adjusting the tilt angle of the strip-shaped air outlet 421 on the air nozzle 42, the airflow pipe 41 is moved laterally by the slider 32 so that the air nozzle 42 is moved to the side of the casting body 11.

[0039] like Figure 2 As shown, in some embodiments, the strip-shaped air outlet 421 is opened radially along the nozzle 42.

[0040] In this embodiment, the radially opened strip-shaped air outlet 421 can form a long strip-shaped airflow and is easy to control and adjust the angle.

[0041] like Figure 4 As shown, in some embodiments, a retainer 43 is fitted onto the airflow duct 41; wherein the retainer 43 is connected to the air nozzle 42 to fix the tilt angle of the strip-shaped air outlet 421.

[0042] In this embodiment, the retainer 43 can fix the air nozzle 42 after the air nozzle 42 is adjusted to prevent the air nozzle 42 from rotating during subsequent use, which would cause the tilt angle of the strip-shaped air outlet 421 to change.

[0043] In some embodiments, the locking structure between the retainer 43 and the air nozzle 42 is prior art. Optionally, the inner wall of the retainer 43 is provided with an internal thread, the side wall of the air nozzle 42 is provided with an external thread, and the side wall of the airflow duct 41 is provided with a limiting ring. The retainer 43 abuts against the limiting ring, and the retainer 43 and the air nozzle 42 are threadedly connected to lock the air nozzle 42.

[0044] In some embodiments, the airflow duct 41 is made of stainless steel corrugated hose.

[0045] At least one embodiment also provides an air gun for a fixed edge device, comprising: an airflow duct 41 and an air nozzle 42; wherein the air nozzle 42 is rotatably disposed at the outlet of the airflow duct 41; the end of the air nozzle 42 is provided with a strip-shaped air outlet 421; the air nozzle 42 is adapted to adjust the tilt angle of the strip-shaped air outlet 421 by rotation to adapt to the casting body 11.

[0046] In this embodiment, the air outlet of the nozzle 42 is set as a strip-shaped air outlet 421, so that the cross-section of the gas ejected by the nozzle 42 is elongated. When the side curvature of the cast body 11 changes, the nozzle 42 is rotated to adjust the tilt angle of the strip-shaped air outlet 421 with the horizontal plane, so that the elongated gas ejected by the nozzle 42 is parallel to the tangent of the arc-shaped side of the cast body 11, thereby generating a stable suction force on the cast body 11.

[0047] In some embodiments, the strip-shaped air outlet 421 is formed radially along the nozzle 42.

[0048] In this embodiment, the radially opened strip-shaped air outlet 421 can form a long strip-shaped airflow.

[0049] In some embodiments, a retainer 43 is fitted onto the airflow duct 41; wherein the retainer 43 is connected to the air nozzle 42 to fix the tilt angle of the strip-shaped air outlet 421.

[0050] In this embodiment, the retainer 43 can fix the air nozzle 42 after it is rotated, preventing the air nozzle 42 from rotating during subsequent use and causing the tilt angle of the strip-shaped air outlet 421 to change.

[0051] In summary, the edge-fixing device and the air gun of the edge-fixing device set the air outlet of the air nozzle 42 as a strip-shaped air outlet 421, so that the cross-section of the gas ejected from the air nozzle 42 forms a long strip. When the side curvature of the cast body 11 changes, it is only necessary to rotate the air nozzle 42 to adjust the tilt angle of the strip-shaped air outlet 421 with the horizontal plane, so that the long strip-shaped gas ejected from the air nozzle 42 is parallel to the tangent of the arc-shaped side of the cast body 11, thereby generating a stable suction force on the cast body 11.

[0052] In this document, when it is said that the first component is located on the second component, this can mean that the first component can be directly formed on the second component, or that the third component can be inserted between the first component and the second component.

[0053] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe the relationship between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.).

[0054] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0056] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0057] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A finning device for thin film casting, characterized in that, include: Extrusion die (1) is used to extrude the cast body (11). Cooling roller (2), located below extrusion die (1), is used to receive and cool the cast body (11); The air box (3) is set on one side of the cooling roller (2), and the cast body (11) is located between the cooling roller (2) and the air box (3); A pair of air guns (4) are mounted on a bellows (3). Each air gun (4) includes an airflow pipe (41) and an air nozzle (42). The air nozzle (42) is rotatably mounted at the outlet of the airflow pipe (41), and a strip-shaped air outlet (421) is provided at the end of the air nozzle (42). The nozzle (42) is adapted to fit the tapered body (11) by rotating and adjusting the tilt angle of the strip-shaped air outlet (421).

2. The edge-fixing device for thin film casting as described in claim 1, characterized in that, The bellows (3) is provided with a guide post (31), and a pair of sliders (32) are provided on the guide post (31); wherein The airflow duct (41) is connected to the corresponding slider (32).

3. The edge-fixing device for thin film casting as described in claim 2, characterized in that, The strip-shaped air outlet (421) is opened radially along the nozzle (42).

4. The edge-fixing device for thin film casting as described in claim 3, characterized in that, A retainer (43) is fitted onto the airflow duct (41); wherein The retainer (43) is connected to the nozzle (42) to fix the tilt angle of the strip-shaped air outlet (421).

5. The edge-fixing device for thin film casting as described in claim 4, characterized in that, The inner wall of the fixture (43) is provided with internal threads; The side wall of the air nozzle (42) is provided with external threads; The retainer (43) is threadedly connected to the air nozzle (42) for locking.

6. The edge-fixing device for thin film casting as described in claim 5, characterized in that, The airflow duct (41) is made of stainless steel corrugated hose.

7. An air gun for a fixed-edge device, characterized in that, include: Airflow duct (41) and air nozzle (42); wherein The air nozzle (42) is rotatably installed at the outlet of the airflow duct (41); The end of the air nozzle (42) is provided with a strip-shaped air outlet (421). The nozzle (42) is adapted to fit the tapered body (11) by rotating and adjusting the tilt angle of the strip-shaped air outlet (421).

8. The air gun for the edge-fixing device as described in claim 7, characterized in that, The strip-shaped air outlet (421) is opened radially along the nozzle (42).

9. The air gun for the edge-fixing device as described in claim 8, characterized in that, A retainer (43) is fitted onto the airflow duct (41); wherein The retainer (43) is connected to the nozzle (42) to fix the tilt angle of the strip-shaped air outlet (421).

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