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KR-102964578-B1 - PLASTIC SHEET EXTRUSION MOLDING MACHINE

KR102964578B1KR 102964578 B1KR102964578 B1KR 102964578B1KR-102964578-B1

Abstract

A plastic sheet extrusion molding device according to the present invention comprises an input section into which a workpiece is fed, an extrusion section coupled to the input section in which the workpiece is melted and extruded, an extrusion die coupled to the end of the extrusion section in which the workpiece is spread into a sheet shape, and a roller section for rolling and cooling the workpiece spread into a sheet shape. The extrusion die may include a die body, a manifold coupled inside the die body in which the molten workpiece moves, and a plurality of guide modules coupled to both sides of the end of the manifold in which the length in a first direction, which is the width direction of the sheet shape of the workpiece, is limited.

Inventors

  • 성이경

Dates

Publication Date
20260512
Application Date
20250203

Claims (5)

  1. Input section into which the workpiece is fed; An extrusion part coupled to the input part above, wherein the workpiece is melted and extruded; An extrusion die coupled to the end of the extrusion section above and spreading the workpiece into a sheet shape; and It includes a roller section that rolls and cools the workpiece spread out in the above sheet shape, The above extrusion die is, Die body; A manifold coupled inside the above die body and through which the molten workpiece moves; It includes a plurality of guide modules coupled to both sides of the end portion of the above manifold to limit the length in the first direction, which is the width direction of the sheet shape of the above workpiece, and The above manifold is, An inlet module into which the molten workpiece is introduced; A land coupled to the above-mentioned inlet module and having a width in the first direction greater than the width in the first direction of the above-mentioned inlet module, wherein the molten workpiece is extruded into the sheet shape; and It includes a distribution module coupled between the inlet module and the land, which distributes the workpiece introduced into the inlet module along the first direction, The above distribution module includes a first distribution pipe, a second distribution pipe, and a third distribution pipe connecting the inlet module and the land, each having an inlet and an outlet defined therein. The first inlet of the first distribution pipe is positioned closer to the inlet module than the second inlet of the second distribution pipe, and the second inlet is positioned closer to the inlet module than the third inlet of the third distribution pipe. The first outlet of the first distribution pipe is positioned closer to the side of the land than the second outlet of the second distribution pipe, and the second outlet is positioned closer to the side of the land than the third outlet of the third distribution pipe, A plastic sheet extrusion molding device in which the first diameter of the first distribution pipe is smaller than the second diameter of the second distribution pipe, and the second diameter is smaller than the third diameter of the third distribution pipe.
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  3. In Article 1, The first distribution pipe is positioned adjacent to the first inlet and includes a first distribution projection protruding in a direction parallel to the first direction toward the center of the inlet module. The second distribution pipe is positioned adjacent to the second inlet and includes a second distribution projection that protrudes further toward the center of the inlet module in a direction parallel to the first direction than the first distribution projection. A plastic sheet extrusion molding device in which the first separation length at which the first distribution projection is spaced apart from the outer surface of the inflow module in the first direction is the same as the second separation length at which the second distribution projection is spaced apart from the first distribution projection in the first direction.
  4. In Paragraph 3, A first heater of a first length is coupled to the outer surface of the first distribution pipe, and a second heater of a second length shorter than the first length is coupled to the outer surface of the second distribution pipe. Both sides of the above land include elastic portions, and The above extrusion die is, It further includes a width adjustment module coupled to the elastic part and adjusting the width of the land in the first direction, The width adjustment module comprises a power module and an adjustment bar coupled to the power module that reciprocates in the first direction and applies pressure to the elastic part. The above adjustment bar is a plastic sheet extrusion molding device comprising a first part extended in a shape corresponding to the elastic part and a second part extended and bent outward from the end of the first part.
  5. In Paragraph 4, It includes a temperature control module coupled to the end of the above land to control the temperature gradient in the first direction, and The above temperature control module is, A plurality of module heaters arranged in the first direction and each independently operable; A linear rail coupled to the upper part of the above module heaters and extending in the first direction; A linear block coupled to the above linear rail and sliding in the above first direction; A protruding pin coupled to the linear block above, reciprocating in a second direction intersecting the first direction and pushing out the module heaters; and A plastic sheet extrusion molding device comprising an elastic membrane containing an elastic material that surrounds the lower surface of the above-mentioned module heaters.

Description

Plastic Sheet Extrusion Molding Machine The present invention relates to a plastic sheet extrusion molding device, and more specifically, to a plastic sheet extrusion molding device that includes a guide module to extrude a sheet of a desired shape. Plastic sheets possess transparency, chemical resistance, high strength, and durability, making them widely used in various industrial fields, including as protective materials for electronic devices, bags, and golf bags. These plastic sheets are manufactured using an extrusion molding method with a plastic sheet extrusion molding machine. A plastic sheet extrusion molding machine is equipment that continuously produces sheets of a desired shape by melting thermoplastic resin; generally, this device melts raw plastic pellets or powder using a high-temperature extruder and processes them into flat sheets of a uniform thickness. This device basically consists of a raw material input section, an extruder containing a screw, a die, and a cooling and winding system. The raw material is heated and melted by the rotation of the screw, and then discharged through the die with a uniform width and thickness. Subsequently, it undergoes cooling and a continuous winding process to be completed as a plastic sheet in the form of a final product. Recently, energy-saving technologies have been introduced for high-efficiency production, and automated systems capable of precisely controlling various thicknesses and widths are being developed. FIG. 1 is a schematic diagram showing the configuration of a plastic sheet extrusion molding device according to one embodiment of the present invention. FIGS. 2a to 2d are drawings showing a plastic sheet extrusion molding apparatus according to one embodiment of the present invention. FIG. 3 is a cross-sectional view of an extrusion die according to one embodiment of the present invention. FIG. 4 is a cross-sectional view of an extrusion die according to one embodiment of the present invention. FIG. 5 is a cross-sectional view of an extrusion die according to one embodiment of the present invention. FIG. 6 is a cross-sectional view of an extrusion die according to one embodiment of the present invention. To fully understand the structure and effects of the present disclosure, preferred embodiments of the present disclosure are described with reference to the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below, but can be implemented in various forms and various modifications can be made. The description of the embodiments is provided merely to ensure that the present disclosure is complete and to fully inform those skilled in the art of the scope of the invention. In the accompanying drawings, the components are depicted enlarged from their actual size for convenience of explanation, and the proportions of each component may be exaggerated or reduced. When a component is described as being "on" or "in contact" with another component, it should be understood that while it may be directly touching or connected to the other component, there may also be another component in between. On the other hand, when a component is described as being "immediately on" or "in contact" with another component, it should be understood that there is no other component in between. Other expressions describing the relationship between components, such as "between" and "directly between," can be interpreted in the same way. Terms such as "first," "second," etc., may be used to describe various components, but said components shall not be limited by said terms. Such terms may be used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, the first component may be named the second component, and similarly, the second component may be named the first component. A singular expression includes a plural expression unless the context clearly indicates otherwise. Terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and may be interpreted as implying that one or more other features, numbers, steps, actions, components, parts, or combinations thereof may be added. Unless otherwise defined, the terms used in the embodiments of the present disclosure may be interpreted in the sense commonly known to those skilled in the art. Hereinafter, a plastic sheet extrusion molding device according to one embodiment of the present invention will be described. FIG. 1 is a schematic diagram showing the configuration of a plastic sheet extrusion molding device according to one embodiment of the present invention. FIG. 2a to 2d are drawings showing a plastic sheet extrusion molding device according to one embodiment of the present invention. Referring to FIGS. 1 to 2d, a plastic sheet extrusion molding device (10