KR-102962974-B1 - vacuum forming apparatus for acrylic bathtub

Abstract

The present invention relates to a vacuum forming apparatus and a forming method for an acrylic bath with a new structure that enables the effective vacuum forming of an acrylic bath. The acrylic bath vacuum forming device according to the present invention heats an acrylic panel (1) fixed to a support (20), then forms an extension (1a) extending upward on the acrylic panel (1) using a vacuum case (70), and while a vacuum forming mold (80) is inserted into the interior of the extension (1a) thus formed, air around the vacuum forming mold (80) is sucked in so that the extension (1a) of the acrylic panel (1) is adsorbed to the periphery of the vacuum forming mold (80) to manufacture an acrylic bath (5). Therefore, there is an advantage in being able to effectively mold a deep and large acrylic bathtub (5).

Inventors

• 김영민

Assignees

• 주식회사 리안

Dates

Publication Date

20260511

Application Date

20260112

Claims (4)

1. A guide rail (10) provided to extend in the front-rear direction; a support member (20) configured in the shape of a rectangular frame with an opening (21) formed in the center and a protrusion (22) protruding upwardly formed on the upper perimeter so that an acrylic panel (1) is placed on the upper surface and is provided to slide in the front-rear direction on the guide rail (10); a fixing means (30) provided on the support member (20) to press and fix the upper perimeter of the acrylic panel (1) placed on the support member (20); a forward-rear driving means (40) for moving the support member (20) forward and backward; a heating means (60) provided at the rear of the support member (20) to heat the acrylic panel (1) fixed to the support member (20) that has been slid backward; and a tube-shaped structure with an open bottom, provided at the front upper side of the support member (20), which is lowered by an upper lifting driving means (71) and slides forward. A vacuum case (70) that is in close contact with the upper periphery of an acrylic panel (1) provided on a support (20), a vacuum forming die (80) that is provided on the front lower side of the guide rail (10) and forms an acrylic panel (1) fixed to a support (20) that is raised by a lower lifting drive means (81) and slides forward, and a vacuum pump (90) connected to the vacuum case (70) and the vacuum forming die (80) through a vacuum tube (91), wherein the vacuum forming die (80) has a vacuum chamber (82) formed inside and a plurality of suction holes (83) connected to the vacuum chamber (82) formed on the periphery, and the vacuum tube (91) has a branching part (92) connected to the vacuum case (70) and the vacuum chamber (82); The apparatus further includes a panel supply means (50) that supplies an acrylic panel (1) to a support member (20) that is provided on one side of the front of the guide rail (10) and slides forward. Among the protrusions (22) formed on the support member (20), the protrusion (22) on the side where the panel supply means (50) is positioned has a supply hole (23) through which the acrylic panel (1) passes. A guide hole (24) is formed in the above protrusion (22) so as to be formed downward inward, and The above fixing means (30) A slide block (31) that is slidably coupled to the guide hole (24) and has a horizontal surface (31a) formed on its inner end that extends horizontally, and A moving drive means (32) connected to the above slide block (31) to move the slide block (31) back and forth inward and outward, and A pressure block (33) having upper and lower surfaces extended in a horizontal direction, with the upper surface slidably coupled to the horizontal surface (31a) of the slide block (31) in the front-rear direction, and a lower end portion having a lower projection (33b) protruding downward and engaging with the perimeter surface of the acrylic panel (1), and It includes a pressure spring (34) connected to the pressure block (33) and applying pressure so that the pressure block (33) slides inward. The above panel supply means (50) is An upper plate (51) having an acrylic panel (1) placed on its upper surface and configured to be connected to the supply hole (23), and An acrylic bathtub vacuum forming device characterized by including a pusher (52) provided on the upper surface of the top plate (51) and pushing the acrylic panel (1) placed on the top plate (51) toward the supply hole (23).
2. In Article 1, An acrylic bathtub vacuum forming device characterized by further including a plurality of ejectors (25) provided on the lower periphery of the support (20) and pushing upward the acrylic bathtub (5) manufactured by forming an acrylic panel (1) placed on the support (20).
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Description

Vacuum forming apparatus and forming method for acrylic bathtub The present invention relates to a vacuum forming apparatus and a forming method for an acrylic bath with a new structure that enables the effective vacuum forming of an acrylic bath. FIGS. 1 and FIGS. 2 illustrate an example of a commonly used acrylic bathtub (5), which is manufactured by molding an acrylic panel. At this time, the acrylic panel that serves as the raw material for the acrylic bathtub (5) includes both a panel made of acrylic material and an artificial marble panel manufactured by mixing acrylic with various raw materials. And, as shown in FIG. 3, the molding device for manufacturing such an acrylic bathtub (5) is equipped with upper and lower molds (2, 3), and a heated acrylic panel is placed between the upper and lower molds (2, 3), and the upper and lower molds (2, 3) are interlocked so that the acrylic panel is molded into the shape of a bathtub (5). However, since this molding device is manufactured using interlocking upper and lower molds (2,3), the device becomes very large and the working speed is slow. Therefore, recently, a method of manufacturing such an acrylic bathtub (5) using a vacuum forming method has been studied, but since such an acrylic bathtub (5) is large in size and deep, a problem has arisen in that it is not suitable to manufacture the acrylic bathtub (5) using a conventional vacuum forming device. Therefore, a new method to solve these problems became necessary. FIG. 1 is a perspective view illustrating an example of an acrylic bathtub, FIG. 2 is a side cross-sectional view of an acrylic bathtub, FIG. 3 is a reference diagram illustrating a conventional method for manufacturing an acrylic bathtub. FIG. 4 is a side cross-sectional view illustrating an acrylic bath vacuum forming device according to the present invention. FIG. 5 is a side cross-sectional view illustrating a support member of an acrylic bath vacuum forming device according to the present invention. FIG. 6 is an enlarged side cross-sectional view of a key part of a support of an acrylic bath vacuum forming device according to the present invention. FIG. 7 is a cross-sectional view showing the section along line AA of FIG. 4, FIG. 8 is an enlarged cross-sectional view of a key part of an acrylic bath vacuum forming device according to the present invention. FIG. 9 is a plan cross-sectional view of an acrylic bath vacuum forming device according to the present invention. FIGS. 10 to 18 are reference drawings illustrating a method of manufacturing an acrylic bathtub using an acrylic bathtub vacuum forming device according to the present invention. The present invention will be described in detail below with reference to the attached exemplary drawings. FIGS. 4 to 18 illustrate an acrylic bathtub vacuum forming device according to the present invention, which is a device for vacuum forming an acrylic bathtub using an acrylic panel (1). At this time, the acrylic panel (1) includes both a panel made of acrylic material and an artificial marble panel manufactured by mixing acrylic with various raw materials. And, the acrylic bath vacuum forming device according to the present invention comprises: a guide rail (10) provided to extend in the front-rear direction; a support member (20) configured in the shape of a rectangular frame with an opening (21) formed in the center and having a protrusion (22) protruding upwardly formed on the upper perimeter so that an acrylic panel (1) is placed on the upper surface and is provided to slide in the front-rear direction on the guide rail (10); a fixing means (30) provided on the support member (20) to press and fix the upper perimeter of the acrylic panel (1) placed on the support member (20); a forward-rear driving means (40) for moving the support member (20) forward and backward; a panel supply means (50) provided on the front left side of the guide rail (10) to supply an acrylic panel (1) to the support member (20) that is slid forward; and an acrylic panel (1) fixed to the support member (20) that is slid backward and provided on the rear side of the support member (20). It is composed of a heating means (60) for heating, a vacuum case (70) configured in a tubular shape with an open lower side and provided on the upper front side of the support (20), which is lowered by an upper lifting drive means (71) and slides forward, and which is in close contact with the upper perimeter of the acrylic panel (1) provided on the support (20), which is lowered by an upper lifting drive means (71), a vacuum molding die (80) provided on the lower front side of the guide rail (10) and which forms the acrylic panel (1) fixed to the support (20) which is raised by a lower lifting drive means (81) and slides forward, and a vacuum pump (90) connected to the vacuum case (70) and the vacuum molding die (80) through a vacuum tube (91). The guide rail (10) is provided to be spaced apart laterally from each other, and a leg me