KR102506336B1 - Manufacturing method for shelf for refrigerator and shelf using the same - Google Patents

Abstract

An embodiment of the present invention is (A) inspecting the appearance of a glass plate and a hanger attached to the glass plate, (B) applying and drying a primer to at least one side of the lower surface of the glass plate and one side of the hanger, (C) a jig Seating the hanger and applying a UV adhesive containing a photoinitiator to one side of the hanger attached to the glass plate, (D) Seating the glass plate on the hanger coated with the UV adhesive, and first contacting and pressing the hanger and the glass plate and (E) curing the UV adhesive by irradiating ultraviolet rays to the bonding site between the hanger and the glass plate.

Description

Refrigerator shelf manufacturing method and shelf using the same {MANUFACTURING METHOD FOR SHELF FOR REFRIGERATOR AND SHELF USING THE SAME}

The present invention relates to a method for manufacturing a shelf for a refrigerator, and more particularly, to a method for manufacturing a shelf for a refrigerator using a UV curing process.

In general, a refrigerator is a home appliance that stores food at a low temperature in an internal storage space shielded by a door, and cools the inside of the storage space using cold air generated through heat exchange with a refrigerant circulating in a refrigerating cycle. It is configured so that food can be stored in an optimal condition.

Refrigerators such as this are becoming larger and multi-functional as dietary habits and user preferences diversify, and their shapes are also diversifying according to the configuration of the storage space.

Meanwhile, in order to efficiently use the space of the refrigerating compartment in the refrigerator, a plurality of shelves capable of loading items are mounted inside the refrigerator and used. Such a shelf is usually mounted on a refrigerator by being placed on a bead formed inside the refrigerator or supported by a bracket coupled to a support member provided on the rear side.

These shelves are manufactured by molding plastic materials or by bending wires, but plastic material shelves have a problem of deformation with use, and wire shelves can fall down in the case of small items and spill soup. In this case, there is a problem of soiling the items on the lower shelf. In the case of recent high-end refrigerators, a glass shelf is widely used, which has been upgraded by using a glass plate as a support plate and integrating the outer rim with a frame of plastic material.

U.S. Patent No. 5,362,145 discloses an integrated glass shelf formed by injection molding the rim portion as the outer edge of the glass plate with a plastic material, and in some cases, necessary brackets are also injection molded together when molding the rim portion of the shelf. . However, the glass shelf as in the above U.S. patent requires an expensive injection molding machine and high precision control to place a glass plate in a mold and inject plastic material only to the rim to perform injection molding. There was a problem that caused an increase in manufacturing cost.

In addition, since the volume of the glass shelf increases due to the frame or bracket coupled to the conventional glass shelf, and the volume of the bead fixing the glass shelf in the refrigerator compartment also increases, this causes a problem in that the storage space of the refrigerator is narrowed.

US Patent Registration No. 5362145 (1994.11.08)

The present invention is to solve the problems of the prior art described above, and an object of the present invention is to provide a method for manufacturing a shelf for a refrigerator using a UV curing process.

In order to achieve the above object, one aspect of the present invention is (A) inspecting the appearance of a glass plate and a hanger attached to the glass plate, (B) applying and drying a primer to at least one side of the lower surface of the glass plate and one side of the hanger (C) placing a hanger on a jig, and applying a UV adhesive containing a photoinitiator to one side of the hanger attached to the glass plate, (D) placing the glass plate on the hanger coated with the UV adhesive, and Provided is a method for manufacturing a shelf for a refrigerator, comprising the steps of first attaching and pressing a glass plate and (E) curing the UV adhesive by irradiating ultraviolet rays to the bonding site between the hanger and the glass plate.

In one embodiment of the present invention, in step (D), pressurizing the hanger and the glass plate with a pressure of 0.1 MPa to 0.3 MPa, and irradiating ultraviolet rays of 600 mJ / cm ² to 800 mJ / cm ² to contact them Characterized in, it may be a method for manufacturing a shelf for a refrigerator.

In one embodiment of the present invention, in the step (E), the ultraviolet rays are irradiated under conditions of a light amount of 4500 mJ/cm ² or more, an irradiation time of 5 to 20 seconds, and an irradiation distance of 100 mm or less. It may be a lathe manufacturing method.

In one embodiment of the present invention, (F) attaching adhesive or double-sided tape to two or more places on the front or rear side of the glass plate and then pressing and assembling the front trim or rear trim. , It may be a method for manufacturing a shelf for a refrigerator.

In one embodiment of the present invention, the UV adhesive may be a method for manufacturing a shelf for a refrigerator, characterized in that the one-component UV fast-curing silicone adhesive.

In one embodiment of the present invention, in step (B), a primer for glass is applied to the glass plate, and a primer for powder coating is applied to the hanger, respectively. .

In one embodiment of the present invention, it may be a shelf for a refrigerator manufactured by any one of the above manufacturing methods.

According to one aspect of the present invention, the refrigerator shelf has excellent durability or corrosion resistance by using tempered glass.

In addition, by using a UV curing process, the manufacturing process is simple and rapid, so manufacturing cost reduction and mass production are easy.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is a perspective view of a shelf for a refrigerator according to an embodiment of the present invention.
2 is a block diagram of a method of manufacturing a shelf for a refrigerator according to an embodiment of the present invention.
3 is a view showing an adhesive cross-section of a glass plate and a hanger according to an embodiment of the present invention.
4 to 11 are flowcharts illustrating a manufacturing process flow of a shelf for a refrigerator according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and, therefore, is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member interposed therebetween. . In addition, when a part "includes" a certain component, it means that it may further include other components without excluding other components unless otherwise stated.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a shelf for a refrigerator according to an embodiment of the present invention, and FIG. 2 is a block diagram of a method for manufacturing a shelf for a refrigerator according to an embodiment of the present invention.

1 and 2, the refrigerator shelf 1000 of the present invention is composed of a glass plate 100, a hanger 200, a front trim 300, a rear trim 400 and a fixer 500. can

The glass plate 100 is a portion on which various items stored in the refrigerator are placed, and may be made of various materials. The glass plate 100 is preferably a rectangular or square rectangle having front rims 110 and rear rims 120 parallel to each other and side rims 130 parallel to each other, but as needed Various polygonal shapes including circular shapes are also possible, and may also be transparent, translucent, or opaque materials.

The glass plate 100 may be tempered glass having a predetermined thickness. More specifically, the glass sheet 100 is tempered glass by heating a molded sheet glass to 500 to 600° C. close to the softening temperature, rapidly cooling it with compressed cooling air, compressively deforming the surface of the glass, and tensile deforming the inside. can Such tempered glass has 3 to 5 times higher bending strength and 3 to 8 times higher impact resistance than ordinary glass, and has excellent heat resistance.

The hanger 200 is a single-piece bracket supported on the inner wall surface of the refrigerator, and may be provided on both sides or one side of the glass plate 100. At this time, as will be described later, the upper surface of the hanger 200 may be bonded to the bottom surface of one side of the glass plate 100 through a UV curing adhesive.

The hanger 200 is made of various synthetic resins, such as HIPS (High Impact Poly Styrene), POM (Poly Oxy Methylene), PVC (Polyvinyl Chloride) and PE (Poly Ethylene), or ABS (acrylonitrile) with excellent heat resistance and impact resistance. butadiene styrene) resin material.

A reinforcing hook 210 and a protrusion 220 may be provided at the rear end of the hanger 200, and the reinforcing hook and protrusion are placed inside the slot of the vertical line formed in the refrigerator compartment according to a conventional method. is used to fix

The front trim 300 is provided on the front edge of the glass plate 100 as a front grip, and a coupling channel into which the glass plate 100 is inserted may be formed. As will be described later, the glass plate 100 may be fixed through a coupling channel of the front trim 300 and an adhesive means such as double-sided tape.

The rear trim 400 is a rear support member of a storage product seated on the glass plate 100 and is provided on a rear edge of the glass plate 100, and similarly, a coupling channel into which the glass plate 100 is inserted may be formed. As will be described later, the glass plate 100 may be fixed through a coupling channel of the rear trim 400 and an adhesive means such as double-sided tape.

The fixer 500 is a member for firmly fixing the hanger 200 and the front trim 300, and may be coupled to the front outer surface of the hanger 200 through riveting. When the fixer 500 is coupled, one end of the fixer 500 is inserted into one side of the coupling channel of the front trim 300 to close the passage on one side of the coupling channel.

3 is a view showing a cross-section of a glass plate and a hanger bonded according to an embodiment of the present invention, and FIGS. 4 to 11 are flowcharts for explaining a manufacturing process flow of a shelf for a refrigerator according to an embodiment of the present invention.

Hereinafter, a method of manufacturing a shelf for a refrigerator according to the present invention will be described with reference to FIGS. 2 to 11 .

First, the appearance of the glass plate 100 and the hanger 200 attached to the glass plate 100 is inspected (S100).

That is, when the glass plate 100 and the hanger 200 are worn, the glass plate 100 is inspected for defects such as scratches, glass printing, and chamfering, and the hanger 200 is unpainted, foreign matter, Inspect for distortion, appearance defects, etc.

Then, a primer is applied to at least one side of the lower surface of the glass plate 100 and the upper surface of the hanger 200 and dried (S200).

More specifically, the glass plate 100 is seated on a jig dedicated to primer application, and the primer is applied and dried along one or both edges of the bottom surface of the glass plate 100 . In addition, a primer is applied and dried in the longitudinal direction on the upper surface of the hanger 200 bonded to the glass plate 100 .

At this time, the primer is an adhesive aid that facilitates the adhesion reaction, and the primer applied to the glass plate 100 may be the primer 10 for glass, that is, a CPP (Chlorolinated Polypylene)-based primer containing a silane compound. The primer applied to 200 may be a powder coating primer 20, that is, a CPP-based primer containing an acrylic compound.

Then, the hanger 200 is seated on the jig, and the UV adhesive 30 containing the photoinitiator is applied to one side of the hanger 200 attached to the glass plate 100 (S300).

UV adhesive 30 has a very fast curing time, enabling mass production of shelves for refrigerators, and compared to other thermal curing equipment, UV equipment is much simpler, requiring only lamps to be mounted on a conveyor system, and control of working hours is possible. There are possible advantages.

On the other hand, the UV adhesive 30 used in the present invention may be a one-component UV fast-curing silicone-based adhesive. That is, a silicon-based adhesive may be applied to have a constant thickness on the upper surface of the hanger 200 by a quantitative discharge method. At this time, the application of the silicone-based adhesive is possible through a simple application rather than a quantitative discharge method, but it is preferable to apply it automatically by a quantitative discharge method.

The quantitative dispensing method is an automated dispensing process using a dispensing device, and refers to a method of forming the UV adhesive to exactly match the position and area of the hanger 200 and to make the volume and thickness constant. Since the method is widely used in a typical micro-dispensing process, further detailed descriptions will be omitted.

Then, the glass plate 100 is seated on the hanger 200 to which the UV adhesive 30 is applied, and the hanger 200 and the glass plate 100 are primarily pressed and contacted (S400).

At this time, the glass plate 100 seated on the hanger 200 is pressed with a pressure of 0.1 MPa to 0.3 MPa, and UV rays of 600 mJ/cm ² to 800 mJ/cm ² are irradiated and contacted. That is, before moving to the main curing step, the hanger 200 and the glass plate 100 are first partially bonded so that they do not deviate from each other, so that the movement to the main curing step can be smoothly performed, and the product The failure rate may be lowered.

Then, the UV adhesive 30 is cured by irradiating ultraviolet rays to the bonding portion of the hanger 200 and the glass plate 100 (S500).

That is, when ultraviolet rays are irradiated using a UV curing device to the adhesive portion of the contact and pressurized hanger 200 and the glass plate 100, a change in physical properties of the UV adhesive 30 occurs, and the UV adhesive 30 rapidly It solidifies and hardens.

At this time, it is preferable to rapidly cure the UV adhesive in a short time by irradiating the irradiated ultraviolet rays under conditions of a light amount of 4500 mJ/cm ² or more, an irradiation time of 5 to 20 seconds, and an irradiation distance of 100 mm or less.

Then, adhesive is applied to the front rim 110 or the rear rim 120 of the glass plate 100, or double-sided tape is attached to two or more places, and then the front trim 300 or the rear trim 400 is pressed and assembled ( S600).

That is, after the front trim 300 and the rear trim 400 are seated on a jig of the trim presser, and the shelf to which the hanger 200 is attached is seated between the jig, the shelf to which the hanger 200 is attached is operated by operating the jig and press each trim.

At this time, the front portion of the glass plate 100 may be inserted into the coupling channel of the front trim 300 and fixed through an adhesive means such as adhesive or double-sided tape. In addition, the rear portion of the glass plate 100 may be inserted into the coupling channel of the rear trim 400 and fixed through an adhesive means such as adhesive or double-sided tape.

Then, after temporarily fixing the fixer 500 to the front trim 300 and the hanger 200, the fixer is fastened through riveting (S700).

That is, one end of the fixer 500 is inserted into one side of the coupling channel of the front trim 300 and temporarily fixed, and the fixer 500 is riveted to the hanger 200 through a rivet machine. Through this, durability can be improved by firmly fixing the hanger 200 and the front trim 300 and filling the space on one side of the coupling channel of the front trim 300 .

Then, the refrigerator shelf 1000 having been assembled is washed and a final appearance inspection is performed (S800).

Tape is attached to the reinforcing hook 210 and the protrusion 220 provided at the rear end of the hanger 200, and the glass plate 100 is formed by using methyl alcohol prepared by mixing distilled water and alcohol at a ratio of about 4:1. and the hanger 200 are washed.

In addition, the assembly state, washing state, etc. of the glass plate 100, the hanger 200, the front trim 300, the rear trim 400, and the fixer 500 of the refrigerator shelf 1000 that have been cleaned are finally checked, Manufacturing of the refrigerator shelf 1000 is completed.

As such, the refrigerator shelf 1000 may have excellent durability or corrosion resistance by using tempered glass. In addition, by using a UV curing process, the manufacturing process is simple and rapid, so manufacturing cost reduction and mass production are easy.

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention.

1000 Refrigerator Shelves
100 glass plate
110 front border
120 rear rim
130 side border
200 hanger
210 reinforcement hook
220 protrusion
300 front trim
400 rear trim
500 fixer
10 Primer for glass
20 Primer for powder coating
30 UV glue

Claims (7)

(A) inspecting the appearance of a glass plate and a hanger attached to the glass plate;
(B) applying and drying a primer on at least one side of the lower surface of the glass plate and one side of the hanger;
(C) placing a hanger on a jig and applying a UV adhesive containing a photoinitiator to one side of the hanger attached to the glass plate;
(D) placing a glass plate on a hanger coated with UV adhesive, and first contacting and pressing the hanger and the glass plate;
(E) curing the UV adhesive by irradiating ultraviolet rays to the adhesive portion of the hanger and the glass plate;
(F) attaching adhesive or double-sided tape to two or more places on the front or rear surface of the glass plate and then compressing and assembling the front trim or rear trim having a coupling channel into which the glass plate is inserted; and
(G) temporarily fixing a fixer in a gap between the front trim and the hanger and then fastening the fixer to the hanger through riveting;
In the step (B), a primer for glass containing a silane compound is applied to the glass plate, and a primer for powder coating containing an acrylic compound is applied to the hangers, respectively. According to claim 1,
In the step (D), the hanger and the glass plate are pressurized with a pressure of 0.1 MPa to 0.3 MPa and irradiated with ultraviolet rays of 600 mJ / cm ² to 800 mJ / cm ² A method for manufacturing a shelf for a refrigerator, characterized in that . According to claim 1,
In the step (E), the ultraviolet rays are irradiated under conditions of a light intensity of 4500 mJ/cm ² or more, an irradiation time of 5 to 20 seconds, and an irradiation distance of 100 mm or less. delete According to claim 1,
The UV adhesive is a one-component UV fast-curing silicone adhesive, characterized in that, refrigerator shelf manufacturing method. delete A shelf for a refrigerator manufactured by the manufacturing method of any one of claims 1 to 3 and 5.

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