KR19990032477U - Trimming device for blow molding refrigerator door - Google Patents

Abstract

The present invention relates to a trimming device for a blow molding refrigerator door, and a lower jig formed to correspond to an outer surface of a refrigerator door manufactured by a blow molding method to support and fix the refrigerator door from a lower side thereof. It is formed to correspond to the inner surface of the refrigerator door, the upper jig fixed to the lower jig by a coupling means while supporting the refrigerator door from the upper side, and the transfer roller to the lower surface to be movable along the outer edge of the refrigerator door The base is fixed to the installation, the drive motor is installed on the upper surface of the base, and the cutter fixed to the rotating shaft of the drive motor to cut the burrs (burr) formed to protrude outward on the edge of the refrigerator door Blow molding to automatically finish the finished refrigerator door without manual work. It relates to a trimming device of a refrigerator door.

Description

Trimming device for blow molding refrigerator door

The present invention relates to a trimming apparatus for a blow molding refrigerator door, and more particularly, to a trimming apparatus used for finishing work of a refrigerator door integrally manufactured by a blow molding technique.

In general, the refrigerator door is a door cabinet 10, which is bent by a thin iron plate to form the exterior of the refrigerator door, as shown in Figure 1, and the upper cap 22 is coupled to the upper and lower ends of the door cabinet 10, respectively. And foamed and hardened by injecting a polyurethane liquid, which is a heat insulating material, into the inner cap 20, the inner cap 20 forming the inside of the refrigerator door, and the inner cap 20 and the door cabinet 10 assembled. It consists of a hard cardboard 12, which is embedded to prevent deformation of the inner box 20, and a gasket 30 attached to the inner edge of the inner box 20 to prevent cold air leakage in the refrigerating chamber or the freezing chamber.

However, such a conventional refrigerator door is assembled and completed after each of these parts separately manufactured, there is a problem that the manufacturing labor increases and the production cost increases, in recent years blow molding to form a single door body by integrating them A blow molding refrigerator door has been proposed and adopted.

However, as described above, the refrigerator door integrally formed by the blow molding technique that has been recently proposed and used is formed after the molding and ejection of the door, and then after cutting the scrap of the molded door by hand. There was a problem that the appearance of the defect occurs because the burrs (burr) that jagged out of the line (line) is formed.

Therefore, since these burrs are manually removed by hand, the number of working hours increases, and the number of workers and working hours increases, which is another factor of increasing manufacturing costs.

The present invention has been made to solve the above problems of the prior art, a blow molding to automatically remove the burr (scrap) or scrap (scrap) to improve the work productivity while significantly reducing the number of workers It is to provide a trimming device of the type refrigerator door.

1 is an exploded perspective view illustrating a door assembly process of a conventional refrigerator;

Figure 2 is a block diagram showing the manufacturing process of a conventional blow molding refrigerator door,

3 is a cross-sectional view showing a trimming apparatus of a blow molding refrigerator door according to the present invention,

4 is a perspective view of FIG. 3,

5 is a perspective view showing another embodiment of a trimming apparatus for a blow molded refrigerator door according to the present invention.

Explanation of symbols on the main parts of the drawings

50 ..... pictograph jig, 60 ..... jigsaw

70 ..... drive motor, 71 ..... shaft,

72 ..... base, 74 ..... feed roller,

76 ..... guide roller, 77 ..... cutter,

88 ..... abrasive discs, 90 ..... blow molded doors,

99 ..... burr.

A feature of the blow molding refrigerator door trimming device according to the present invention, in the device for finishing the outer edge of the refrigerator door manufactured by blow molding (blow mounding) technique, is formed to correspond to the outer surface of the refrigerator door A lower jig for supporting and fixing a refrigerator door at a lower side thereof, an upper jig formed to correspond to an inner surface of the refrigerator door, and fixed to the lower jig by a coupling means while supporting the refrigerator door at an upper side thereof; A base on which the transfer roller is installed and fixed on the bottom surface of the base, a drive motor installed on the top surface of the base, and a burr formed to protrude outwardly on the edge of the refrigerator door; Blow molded refrigerator comprising a cutter fixed to the rotating shaft of the drive motor for cutting To provide a trimming device.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the trimming device of the blow molded refrigerator door of the present invention will be described in more detail.

3 is a cross-sectional view illustrating a trimming apparatus of a blow molding refrigerator door according to the present invention, and FIG. 4 is a perspective view of FIG. 3, which is formed to correspond to an outer surface of a molded refrigerator door 90 and illustrates the refrigerator door 90. The lower mold | die jig 60 which supports and fixes at the lower side is provided.

In addition, the upper jig 50 is formed to correspond to the inner surface of the refrigerator door 90 is fixed to the lower jig 60 by a coupling means while supporting the refrigerator door 90 from the upper side.

In addition, the upper and lower jig 50, the base 72 is fixed to the refrigerator door 90 is fixed to the base 72 is fixed to the transport roller 74 is installed on the bottom surface of the refrigerator door 90 to move along the edge (60) It is provided in the adjacent position.

In addition, a driving motor 70 which is a driving means is installed on an upper end surface of the base 72, and protrudes outwardly on an outer edge of the refrigerator door 90 at the tip of the rotation shaft 71 of the driving motor 70. A cutter 77 is installed to cut the borer 99 so formed.

The cutter 77 is installed on the rotary shaft 71 so as to be replaceable, for example, to allow attachment and detachment of various types of cutters having different diameters.

In addition, a guide groove 86 is formed at a predetermined height along the outer edge of the lower die jig 60 to be recessed into the lower die jig 60, and the base is guided along the guide groove 86. The guide means 76 is provided with the guide roller 76 axially fixed to the lower side of this base 72 so that 72 may be guided.

On the other hand, Figure 5 is a perspective view showing another embodiment of a trimming device of the blow molding refrigerator door according to the present invention, in place of the cutter 77, the polishing disk 88 that can be trimmed is installed and operating It is shown.

As described above, the polishing disk 88 is also installed and fixed on the rotating shaft 71 of the drive motor 70 so as to be replaced with a polishing disc 88 having various diameters and various roughnesses.

The present invention made of this configuration, as shown in Figure 2, the step of injecting a molding compound (molding compound) heated in a balloon shape between the mold for manufacturing a refrigerator door (100), and the step (100) At the same time performing the air blow and vacuum molding to extract the air through a plurality of micro-pores at the same time (102), and blowing the balloon while blowing like a balloon by the air pressure injected after the step 102 Cooling along the shape of the inner surface of the mold and extracting the air between the molding compound and the mold inner surface through the micropores so that the molding compound is filled to the delicate part of the mold in a predetermined cooling state (104). And, when the door is blow-molded through the deforming step 106 after the step 104, the edge thereof protrudes outward. There is a burr 99.

Therefore, after fixing the door 90 to the upper and lower jig 50, 60 as described above so as not to flow, the base 72 is moved along the edge of the door by the guide means. By operating the cutter 77 by the drive motor 70, the door 99 of the door can be removed cleanly.

Therefore, a large number of workers are not required, and a worker only needs to push the base 72 along the edge of the door.

In addition, if the cutting surface by the cutter 77 is poor, it is possible to have a more beautiful appearance by evenly polishing the cutting surface with the above-described polishing disk 88.

Although the above description is limited to an integrated door of a refrigerator, the present invention may be applied to an integrated refrigerator body, which is not limited thereto, but also recently, and various modifications may be made without departing from the spirit of the present invention. will be.

As described above, by providing a trimming apparatus for the blow molding refrigerator door according to the present invention, the appearance of the refrigerator door becomes more beautiful by easily removing the burrs of the refrigerator door integrally blown by the blow molding technique. There is an effect of increasing the consumer's needs. Furthermore, by providing convenience for trimming, the working time is shortened and the number of working persons is reduced, thereby reducing the overall production cost.

Claims (3)

In the device for finishing the outer edge of the refrigerator door (90) manufactured by the blow molding (blow mounding) technique, A lower jig 60 formed to correspond to an outer surface of the refrigerator door 90 to support and fix the refrigerator door 90 from a lower side thereof; An upper mold jig 50 formed to correspond to an inner surface of the refrigerator door 90 and fixed to the lower mold jig 60 by a coupling means while supporting the refrigerator door 90 at an upper side thereof; A base 72 on which a transport roller 74 is installed and fixed to a lower surface of the refrigerator door 90 so as to be movable along an outer edge of the refrigerator door 90; A drive motor 70 installed on the top surface of the base 72; The cutter 77 is fixed to the rotating shaft of the drive motor 70 to cut the borough 99 formed to protrude outward on the outer edge of the refrigerator door 90, Trimming apparatus of the blow molding refrigerator door, characterized in that the configuration. According to claim 1, Guide grooves (86) formed to be recessed at a predetermined height from the lower end along the edge of the lower mold jig (60), With a guide roller 76 is fixed to the lower side of the base 72 so as to be guided along the guide groove 86, Trimming device of the blow molding refrigerator door characterized in that the guide means is further provided. 2. The trimming apparatus of the blow molded refrigerator door according to claim 1, wherein the cutter is replaceable.