KR101485365B1 - Common use for refrigerator case - Google Patents

Common use for refrigerator case Download PDF

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Publication number
KR101485365B1
KR101485365B1 KR20140113964A KR20140113964A KR101485365B1 KR 101485365 B1 KR101485365 B1 KR 101485365B1 KR 20140113964 A KR20140113964 A KR 20140113964A KR 20140113964 A KR20140113964 A KR 20140113964A KR 101485365 B1 KR101485365 B1 KR 101485365B1
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KR
South Korea
Prior art keywords
plate
rack
main part
mounting frame
cylinder rod
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KR20140113964A
Other languages
Korean (ko)
Inventor
노은철
주홍일
조남준
김요섭
Original Assignee
주식회사 은광기전
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Application filed by 주식회사 은광기전 filed Critical 주식회사 은광기전
Priority to KR20140113964A priority Critical patent/KR101485365B1/en
Application granted granted Critical
Publication of KR101485365B1 publication Critical patent/KR101485365B1/en
Priority to PCT/KR2015/008890 priority patent/WO2016032214A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds

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  • Refrigerator Housings (AREA)

Abstract

Disclosed is a common foaming mold for a refrigerator case. The foaming mold for a refrigerator case comprises a main part; a holder unit including a deck mounting unit mounted on a mold fixating deck positioned on a production line of refrigerator cases, and a main part mounting frame combined to the main part; and a holder unit variable means installed between the deck mounting unit and the main part mounting frame, and transferring the main part mounting frame from the deck mounting unit.

Description

{COMMON USE FOR REFRIGERATOR CASE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a common foaming die of a refrigerator case, and more particularly, to a common foaming die of a refrigerator case which can be varied in a depth direction of a refrigerator case according to a standard of a refrigerator case.

Generally, the foaming process of a refrigerator cabinet is divided into a fixed foaming process and a rotary foaming process.

In the fixed foaming process, the refrigerator cabinet is moved by a separate conveyor and then supplied to the inside of the fixed foaming apparatus. The lower fixture rises up to be combined with the foaming mold located at the upper side, The bottom side and the side supporting structure are operated to fix the outer periphery of the cabinet.

When the cabinet is fixed, the foaming liquid is injected and the foaming proceeds to keep the fixed state until the hardening is finished.

When the curing is completed, the mold combining unit and the fixed supporting structures are automatically operated to be separated from the refrigerator cabinet, the lower fixture is lowered, the refrigerator cabinet having completed the process is taken out through the take-in charging conveyor and the new refrigerator cabinet And the next process is carried out.

In the rotary foaming process, a foaming mold is mounted on a movable pallet type facility, the mold is moved on a conveyor having a fixed orbit, and a mold opening process, a cabinet unloading process, , Cleaning, loading of cabinet semi-finished products, injection of foamed liquid, closing of molds, and conveyor moving (during curing time).

Among the foaming processes of the refrigerator cabinet, the foaming mold used in the fixed foaming process is fixed to a deck device installed on the refrigerator production line. This state is illustrated in Fig.

The deck device to be installed in the fixed foaming equipment is the standard equipment for the production of the foaming mold. The longitudinal direction of the product corresponds to the upper side of the deck device, and the product width direction is adjusted by the variable of the equipment side wall frame (WALL FRAME). However, it is impossible to change the depth direction of the product. Therefore, when manufacturing foam molds, different mold depths are used for each mold in the holder base part. This results in a problem of increasing manufacturing costs.

In addition, when changing the model of the manufactured product, the deck device fixing the foam mold should be moved to a place for model change mold replacement using a moving path in the facility and replaced with a foam mold for production of another model. This results in a problem of delaying the production process.

Korean Patent Publication No. 10-2007-0081478

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a refrigerator which can reduce the manufacturing cost of a refrigerator case by eliminating the need to replace a mold according to a refrigerator case standard, And to provide a common foam mold of a case.

According to an aspect of the present invention, there is provided a common foam mold for a refrigerator case, comprising: a main body; A holder part including a deck mounting part mounted on a mold fixing deck located on a refrigerator case production line and a main part mounting frame coupled with the main part; And a holder part provided between the deck mounting part and the main part mounting frame for moving the main part mounting frame from the deck mounting part.

The deck mounting portion includes: a first plate fixed on the mold fixing deck; And a second plate facing one surface of the first plate and disposed between the first plate and the main part mounting frame, wherein the holder part has variable ends, the second plate and the main part mounting frame And a plurality of first actuating parts and a plurality of second actuating parts mounted on the main part mounting frame to move the main part mounting frame.

A first driving part installed on a surface of the second plate facing the first plate of the second plate and connected to the first actuating part to actuate the first actuating part; And a second driving unit installed on the same plane as the first driving unit and connected to the second operating unit to operate the second operating unit.

The first driving unit may include: a first cylinder including a first cylinder rod; A third rack connected to the first cylinder rod and moving along the axial direction of the first cylinder rod by the forward and backward movement of the first cylinder rod; A first rotation axis disposed perpendicularly to the longitudinal direction of the third rack; A third pinion gear coupled to the first rotation shaft and meshed with the third rack; And first transmission gears coupled to both end portions of the first rotation shaft and meshing with the first pinion gears of the plurality of first actuating portions, and the second drive portion includes a second cylinder including a second cylinder ; A fourth rack connected to the second cylinder rod and moving along the axial direction of the second cylinder rod by the forward and backward movement of the second cylinder rod; A second rotation axis disposed perpendicularly to the longitudinal direction of the fourth rack; A fourth pinion gear coupled to the second rotation shaft and meshed with the fourth rack; And second transmission gears coupled to both end portions of the second rotation shaft and meshing with the second pinion gears of the plurality of second operation portions.

According to the common foam mold of the refrigerator case according to the present invention, it is possible to omit the process of replacing the mold according to the specification of the refrigerator case, thereby reducing the time required for replacing the mold, And it is not necessary to manufacture each of the foam molds according to the standard of the refrigerator case, so that there is an advantage that the manufacturing cost of the foam mold of the refrigerator case can be reduced.

1 illustrates a state in which a foaming mold is fixed to a deck device of a foaming facility.
FIG. 2 is a perspective view illustrating the appearance of a common foam mold of a refrigerator case according to an embodiment of the present invention. FIG.
3 is a perspective view of a state in which the first plate shown in Fig. 2 is omitted.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the invention. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

FIG. 2 is a perspective view showing an outer appearance of a common expansion metal mold of a refrigerator case according to an embodiment of the present invention, and FIG. 3 is a perspective view of a state where the first plate shown in FIG. 2 is omitted.

2 and 3, a common foam mold of a refrigerator case according to an embodiment of the present invention includes a main part 100; A holder portion 200; And the holder portion includes variable sections.

The main part 100 is a mold for forming the inside of the case of the refrigerator to form a refrigerator case. For example, the main unit 100 includes a main body (not shown), an upper mold plate fixed to the upper side of the main body of the refrigerator case and fixed to the upper side of the main body, The front and rear sides of the main body and the left and right side surfaces of the main body. The sliding plate is moved forward and backward relative to the main body when sliding the sliding plate, A mold plate, left and right mold plates, and an actuator installed on the main body and slidingly driving a pair of sliding plates.

The holder part 200 may include a deck mounting part 210 and a main part mounting frame 220.

The deck mounting portion 210 is a portion mounted on a mold fixing deck (not shown) located on a refrigerator case production line. The deck mounting portion 210 may include a first plate 211 and a second plate 212. The first plate 211 and the second plate 212 may be rectangular plates. The first plate 211 and the second plate 212 may be disposed to face each other with a predetermined distance therebetween. At this time, between the first plate 211 and the second plate 212, the first plate 211 and the second plate 212 can be connected to each other by a plurality of frames arranged perpendicularly to the surfaces of the first plate 211 and the second plate 212, have. The first plate 211 may have a size smaller than that of the second plate 212 and the second plate 212 may be positioned below the first plate 211.

The main part mounting frame 220 is a part where the main part 100 is mounted. The main attachment frame 220 may be a frame of a rectangular frame. The main attachment frame 220 may be disposed under the second plate 212, that is, on the opposite side of the first plate 211 with respect to the second plate 212. The main attachment frame 220 can be moved from the second plate 212 by the holder part.

The holder-added variable end moves the main attachment frame 220. The deck mounting portion 210, and the main mounting frame 220, respectively. The holder portion may include a plurality of first actuating portions 310, a plurality of second actuating portions 320, a first driving portion 330, and a second driving portion 340.

The plurality of first actuating portions 310 may be disposed on two longitudinal axes of the second plate 212, respectively. At this time, each first actuating part 310 may be mounted on the second plate 212 and the main part mounting frame 220 to move the main part mounting frame 220. Each of the first actuating portions 310 may include a first rack 311 and a first pinion gear 312.

The first rack 311 may extend from the second plate 212 toward the main attachment frame 220. At this time, one end of the first rack 311 is fixed to the main part mounting frame 220, and the other end of the first rack 311 can be connected to the second plate 212 so as to be guided by the gear guide mounted on the second plate 212.

The first pinion gear 312 may be rotatably mounted on the second plate 212. For example, a bearing device may be installed on the second plate 212, a rotation shaft may be coupled to the bearing device, and the rotation shaft may be coupled to the rotation shaft and rotated together with the rotation shaft. The first pinion gear 312 can be engaged with the first rack 311 and rotated.

The plurality of second actuating parts 320 may be disposed on two longitudinal axes of the second plate 212, respectively. Each of the second actuating parts 320 is disposed below the first actuating part 310 and is mounted on the second plate 212 and the main part mounting frame 220 to be rotatable about the main part mounting frame 220 Can be moved. Each of the second actuating portions 320 may include a second rack 321 and a second pinion gear 322. Since the second rack 321 and the second pinion gear 322 are the same as the mounting structure of the first rack 311 and the first pinion gear 312, the first rack 311 and the first pinion gear 312 The description of the mounting structure is omitted, and a detailed description thereof will be omitted.

The first driving unit 330 may be installed on a surface of the second plate 212 facing the first plate 211. The first driving unit 330 is connected to the first operating unit 310 to operate the first operating unit 310. The first driving unit 330 may include a first cylinder 335, a third rack 331, a first rotating shaft 333 and a third pinion gear 332 and first transmission gears 334 .

The first cylinder 335 may be disposed parallel to the long axis of the second plate 212. The first cylinder 335 may include a first cylinder rod 335a which is operated for forward and backward movement.

The third rack 331 is mounted on the second plate 212 and is connected to the first cylinder rod 335a such that the longitudinal direction thereof is parallel to the axial direction of the first cylinder rod 335a and the first cylinder rod 335a To move along the axial direction of the first cylinder rod 335a.

The first rotating shaft 333 may be disposed perpendicularly to the longitudinal direction of the third rack 331. The first rotating shaft 333 may be disposed above the third rack 331 and both ends of the first rotating shaft 333 may extend to the direction in which the first actuating part 310 is located.

The third pinion gear 332 may be coupled with the third rack 331 in the center of the first rotation shaft 333. The third pinion gear 332 can be rotated together with the first rotation shaft 333 when the third rack 331 moves in the longitudinal direction of the third rack 331. [

The first transmission gears 334 may be coupled to both ends of the first rotation shaft 333. At this time, the first transmission gears 334 can be engaged with the first pinion gears 312 of the plurality of first actuating parts 310. The first transmission gears 334 rotate together with the first rotation shaft 333 to rotate the first pinion gear 312.

The second driving unit 340 may be installed on a surface of the second plate 212 facing the first plate 211. The second drive unit 340 is connected to the second operation unit 320 to operate the second operation unit 320. The second drive portion 340 may include a second cylinder 345, a fourth rack 341, a second rotation shaft 343 and a fourth pinion gear 342 and second transmission gears 344 .

The second cylinder 345 may be disposed so as to be parallel to the long axis side of the second plate 212. The second cylinder 345 may include a second cylinder rod 345a that operates forward and backward. The second cylinder rod 345a may be parallel to the first cylinder rod 335a and the advancing direction of the second cylinder rod 345a may be opposite to the advancing direction of the first cylinder 335a.

The fourth rack 341 is mounted on the second plate 212 and is connected to the second cylinder rod 345a such that the longitudinal direction thereof is parallel to the axial direction of the second cylinder rod 345a and the second cylinder rod 345a To move along the axial direction of the second cylinder rod 345a.

The second rotation shaft 343 may be disposed perpendicular to the longitudinal direction of the fourth rack 341. The second rotation shaft 343 may be disposed above the fourth rack 341 and both ends of the second rotation shaft 343 may extend to a direction in which the second actuating part 320 is located.

The fourth pinion gear 342 may be coupled to the fourth rack 341 by being coupled to the center of the second rotation shaft 343. The fourth pinion gear 342 can be rotated together with the second rotation shaft 343 when the fourth rack 341 moves in the longitudinal direction of the fourth rack 341.

And the second transmission gears 344 can be coupled to both ends of the second rotation shaft 343, respectively. At this time, the second transmission gears 344 can be engaged with the second pinion gears 322 of the plurality of second actuating parts 320. The second transmission gears 344 rotate together with the second rotation shaft 343 to rotate the second pinion gear 322.

The common foaming mold of the refrigerator case according to an embodiment of the present invention is variable in the holder part 200 according to the specification of the refrigerator case. Hereinafter, the process of varying the holder part 200 will be described.

Fig. 2 shows a state before the holder portion 200 is changed. In such a state, a refrigerator case of a large size can be manufactured.

As shown in FIG. 2, when the refrigerator case of a small size is manufactured in a state where the holder 200 is not variable, the holder 200 is changed. The variable portion of the holder 200 may be configured such that when the first driving portion 330 and the second driving portion 340 start operating, the first driving portion 330 and the second driving portion 340 operate, 310 and the plurality of second actuating parts 320 are operated to change the holder part 200. This is described in detail below.

When the first cylinder 335 of the first driving part 330 is operated and the first cylinder rod 335a is advanced, the third rack 331 moves along the moving direction of the first cylinder rod 335a, The third pinion gear 332 and the first rotation shaft 333 are rotated. The first transmission gears 334 coupled to both ends of the first rotation shaft 333 are rotated together with the first rotation shaft 333 when the first rotation shaft 333 is rotated, The first pinion gears 312 of each of the plurality of first actuating parts 310 engaged with the first pinion gears 334 rotate. The first rack 311 engaged with the first pinion gear 312 is moved toward the direction away from the second plate 212 of the holder 200 when the first pinion gear 312 is rotated.

The second driving unit 340 is driven together with the first driving unit 330. When the second cylinder 345 of the second driving part 340 is operated and the second cylinder rod 345a is advanced, the fourth rack 341 moves along the moving direction of the second cylinder rod 345a, The fourth pinion gear 342 and the second rotation shaft 343 are rotated. The second transmission gears 344 coupled to both ends of the second rotation shaft 343 are rotated together with the second rotation shaft 343 when the second rotation shaft 343 is rotated, The second pinion gears 322 of each of the plurality of second actuating portions 320 engaged with the second pinion gears 344 rotate. When the second pinion gear 322 is rotated, the second rack 321 engaged with the second pinion gear 322 moves toward the direction away from the second plate 212 of the holder unit 200.

By this process, the main attachment frame 220 moves away from the second plate 212. The state in which the holder 200 is varied as described above is shown in FIGS. 2 and 3 as well.

Generally, when making a refrigerator case of the same kind and specification, the depth of the refrigerator case is different. In this case, there is a disadvantage in that a foaming mold suited to each standard must be used, but this can be solved by the present invention. For this purpose, the common foamed mold according to an embodiment of the present invention is configured such that the main part 100 is moved in accordance with the small standard depth of the refrigerator case by varying the holder part 200, As shown in FIG.

Accordingly, the process of replacing the main unit 100 according to the standard of the refrigerator case can be omitted, thereby reducing the time required for replacing the main unit 100. Thus, the productivity of the refrigerator case can be improved, It is not necessary to manufacture each of the foam molds according to the standard of the refrigerator case, so that there is an advantage that the manufacturing cost of the foam mold of the refrigerator case can be reduced.

On the other hand, a wear-resistant coating layer is formed on the opposite surfaces of the second plate 212 and the main attachment frame 220.

Here, the wear-resistant coating layer is composed of a mixture of 96 to 98% by weight of chromium oxide (Cr 2 O 3 ) and 2 to 4% by weight of titanium dioxide (TiO 2 ) 220, made of 50 to 600 탆 thick, and coated with a hardness of 900 to 1000 HV.

The wear-resistant coating layer is formed by spraying powder composed of 96 to 98% by weight of chromium oxide (Cr 2 O 3 ) and 2 to 4% by weight of titanium dioxide (TiO 2 ).

The reason why the second plate 212 and the main attachment frame 220 are coated with a ceramic is to prevent abrasion and corrosion. Compared to chrome plating or nickel chrome plating, the ceramic coating is excellent in corrosion resistance, scratch resistance, abrasion resistance, impact resistance and durability.

Chromium oxide (Cr 2 O 3 ) acts as a passivity layer to block oxygen entering the inside of the metal, thereby preventing rusting.

Titanium dioxide (TiO 2 ) is a white pigment because it is very stable physicochemically and has high hiding power. And is also widely used for ceramics having high refractive index because of high refractive index. And has characteristics of photocatalytic property and superhydrophilic property. Titanium dioxide (TiO 2 ) acts as an air purification function, an antibacterial function, a harmful substance decomposition function, a pollution prevention function, and a discoloration prevention function. This titanium dioxide (TiO 2 ) ensures that the abrasion-resistant coating layer is coated on the second plate 212 and the main attachment frame 220, and the foreign substance adhered to the abrasion- Thereby preventing damage.

Here, chromium oxide (Cr 2 O 3) and when using hayeoseo mixing titanium dioxide (TiO 2), the mixing ratio of these, chrome oxide (Cr 2 O 3) Titanium dioxide (TiO 2) in 96-98% by weight 2 By weight to 4% by weight.

When the mixing ratio of chromium oxide (Cr 2 O 3 ) is less than 96 to 98% by weight, the coating of chromium oxide (Cr 2 O 3 ) is often broken in an environment such as a high temperature, The rust preventive effect of the main mounting frame 220 and the main mounting frame 220 is lowered suddenly.

When the mixing ratio of titanium dioxide (TiO 2 ) is less than 2 to 4 wt%, the effect of titanium dioxide (TiO 2 ) is insignificant so that the purpose of mixing it with chromium oxide (Cr 2 O 3 ) is discolored. That is, titanium dioxide (TiO 2 ) decomposes and removes foreign matter adhering to the second plate 212 and the main attachment frame 220, so that the second plate 212 and the main attachment frame 220 are corroded or damaged If the mixing ratio is less than 2 to 4% by weight, it takes a long time to decompose the attached foreign matters.

The coating layer made of these materials is formed to a thickness of 50 to 600 mu m in the second plate 212 and the main attachment frame 220 and has a hardness of 900 to 1000 HV and a surface roughness of 0.1 to 0.3 mu m, Coated.

The wear-resistant coating layer is sprayed with the powder powder and gas at 1400 DEG C at a Mach 2 speed to spray the second plate 212 and the main attachment frame 220 at 50 to 600 mu m.

If the thickness of the wear-resistant coating layer is less than 50 탆, the above-mentioned effect of the ceramic coating layer can not be guaranteed. If the thickness of the wear-resistant coating layer exceeds 600 탆, the above- There is a problem that working time and material cost are wasted.

The surfaces of the second plate 212 and the main attachment frame 220 face each other while the second plate 212 and the main attachment frame 220 are coated with the anti-abrasion coating layer, The surfaces of the second plate 212 and the main attachment frame 220 facing each other are arranged to be opposed to each other in the cooling device 220. [ (Not shown) to maintain a temperature of 150 to 200 ° C.

A sealing material made of anhydrous chromic acid (CrO 3 ) made of a metal-based glass quartz system may further be applied to the periphery of the abrasion-resistant coating layer. Anhydrous chromic acid is applied as an inorganic sealing material around a coating layer made of chromium nickel powder.

Anhydrous chromic acid (CrO 3 ) is used in places that require high abrasion resistance, lubricity, heat resistance, corrosion resistance and releasability, is not discolored in the atmosphere, has high durability, and has good abrasion resistance and corrosion resistance. The coating thickness of the sealing material is preferably about 0.3 to 0.5 mu m. If the coating thickness of the sealing material is less than 0.3 占 퐉, the sealing material easily peels off even in a slight scratch groove, so that the above-mentioned effect can not be obtained. If the coating thickness of the sealing material is made thick enough to exceed 0.5 탆, pin holes, cracks, and the like will increase on the plated surface. Therefore, the coating thickness of the sealing material is preferably about 0.3 to 0.5 mu m.

A coating layer having excellent abrasion resistance and oxidation resistance is formed on the surfaces of the second plate 212 and the main mounting frame 220 facing each other. Therefore, the surface of the second plate 212 and the main mounting frame 220, Are prevented from being worn or oxidized in the process of contact with each other and in the exposure environment, thereby prolonging the life of the product.

In addition, the outer surface of the first cylinder 335 and the second cylinder 345 may be coated with a temperature-coloring layer whose color changes according to the temperature.

The temperature-coloring layer is coated on the surfaces of the first cylinder 335 and the second cylinder 345 by two or more color-changing substances whose color changes when the temperature is equal to or higher than a predetermined temperature, And a protective film layer is coated on the temperature coloring layer to prevent the temperature coloring layer from being damaged.

Here, the temperature-coloring layer may be formed by coating a temperature-coloring material having a color-changing temperature of not lower than 40 ° C and not lower than 60 ° C, respectively.

The temperature discoloring layer is for sensing the temperature change of the coating material by changing the color depending on the temperatures of the first cylinder 335 and the second cylinder 345. The temperature-coloring layer may be formed by coating a surface of the first cylinder 335 and the second cylinder 345 with a color-changing material that changes color when the temperature is equal to or higher than a predetermined temperature.

The temperature discoloring material is generally composed of a microcapsule structure having a size of 1 to 10 탆 and can exhibit a colored and transparent color due to the bonding and separation of the electron donor and the electron acceptor in the microcapsule.

In addition, the temperature-changing material has a rapid change in color and can have various discoloration temperatures such as 40 ° C, 60 ° C, 70 ° C, 80 ° C, 90 ° C, 100 ° C, 120 ° C, 150 ° C, 180 ° C, , This discoloration temperature can be easily adjusted in several ways. Such a temperature-coloring material may be various kinds of temperature-coloring materials based on principles such as molecular rearrangement of an organic compound and spatial rearrangement of an atomic group.

For this purpose, it is preferable that the temperature-coloring layer is formed so as to be separated into two or more sections according to the temperature change by coating two or more temperature-coloring materials having different color-changing temperatures. The temperature-coloring layer preferably uses a temperature-coloring material having a relatively low temperature of the discoloration temperature and a temperature-discoloring material having a relatively high discoloration temperature, more preferably a discoloration temperature of not lower than 40 ° C and not lower than 60 ° C A temperature-coloring layer can be formed using a temperature-coloring material.

This allows the temperature change of the first cylinder 335 and the second cylinder 345 to be checked step by step so that the first cylinder 335 and the second cylinder 345 are prevented from being overheated and damaged can do.

The passivation layer is coated on the temperature discoloration layer to prevent the temperature discoloration layer from being damaged due to external impact, and it is easy to check whether the discoloration of the temperature discoloration layer is visible, and at the same time, It is preferable to use a coating material.

On the other hand, the deck mounting portion 210 is preferably formed of nodular cast iron.

Since nodular cast iron is a cast iron in which graphite is spherically crystallized during the solidification process by adding magnesium and the like to the molten metal of the common gray cast iron, the shape of the graphite is spherical compared to gray cast iron. Since the nodular cast iron has a small notch effect, the stress concentration phenomenon is reduced and the strength and toughness are greatly improved.

The deck mounting part 210 of the present invention is formed by heating a nodular cast iron at a temperature of 1600 to 1650 占 폚 to make a molten metal and then performing a desulfurizing treatment and adding a spheroidizing treatment agent containing about 0.3 to 0.7% by weight of magnesium, Followed by heat treatment.

Here, when the nodular cast iron is heated to less than 1600 ° C, the entire structure is not sufficiently melted. If the cast iron is heated above 1650 ° C, unnecessary energy is wasted. Therefore, it is preferable to heat the nodular cast iron to 1600 to 1650 ° C.

When the amount of magnesium is less than 0.3% by weight, the effect of injecting the spheroidizing agent is negligible. When the amount of magnesium is less than 0.3% by weight, the effect of injecting spheroidizing agent is insignificant. When the amount of magnesium is less than 0.3% There is a problem in that an expensive material cost is increased. Therefore, the mixing ratio of magnesium in the spheroidizing agent is preferably about 0.3 to 0.7% by weight.

When the spheroidizing treatment agent is injected into the molten nodular cast iron, it is subjected to spheroidizing treatment at 1500-1550 ° C. If the spheroidizing treatment temperature is lower than 1500 ° C., the spheroidizing treatment is not properly performed. If the spheroidizing treatment temperature is higher than 1550 ° C., the spheroidizing treatment effect is not greatly improved, but unnecessary energy is wasted. Therefore, the spheroidization treatment temperature is preferably 1500 to 1550 ° C.

The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features presented herein.

100: main part 200: holder part
210: Deck mounting part 220: Main part mounting frame
310: first operating portion 320: second operating portion
330: first driving part 340: second driving part

Claims (5)

A main part (100);
A holder part 200 including a deck mounting part 210 mounted on a mold fixing deck located on a refrigerator case production line and a main part mounting frame 220 coupled with the main part 100; And
And a holder part provided between the deck mounting part 210 and the main part mounting frame 220 for moving the main part mounting frame 220 from the deck mounting part 210. [ Common foam mold of refrigerator case. The method according to claim 1,
The deck mounting portion 210,
A first plate (211) fixed on the mold fixing deck; And
And a second plate (212) facing one surface of the first plate (211) and disposed between the first plate (211) and the main mounting frame (220)
Wherein the holder section has:
A plurality of first actuating parts 310 and a plurality of second actuating parts 320 mounted on the second plate 212 and the main part mounting frame 220 to move the main part mounting frame 220, And the common foam mold of the refrigerator case. 3. The method of claim 2,
Wherein the holder section has:
A first drive unit 330 installed on a surface of the second plate 212 facing the first plate 211 and connected to the first operation unit 310 to operate the first operation unit 310, ; And
And a second driving unit (340) installed on the same plane as the first driving unit (330) and connected to the second operating unit (320) to operate the second operating unit (320) Common foaming mold of case. 3. The method of claim 2,
The plurality of first actuating parts (310)
A first rack 311 extending from the second plate 212 toward the main part mounting frame 220 and connected to the second plate 212 and the main part mounting frame 220; And
And a first pinion gear (312) mounted on the second plate (212) and meshing with the first rack (311) and rotating to move the first rack (311)
The plurality of second actuating parts (320)
A second rack 321 extending from the second plate 212 toward the main part mounting frame 220 and connected to the second plate 212 and the main part mounting frame 220; And
And a second pinion gear (322) mounted on the second plate (212) and meshing with the second rack (321) and rotating to move the second rack (321) Common foaming mold of. The method of claim 3,
The first driving unit 330 includes:
A first cylinder 335 including a first cylinder rod 335a;
A third rack 331 connected to the first cylinder rod 335a and moving along the axial direction of the first cylinder rod 335a by the forward and backward movement of the first cylinder rod 335a;
A first rotation shaft 333 disposed perpendicularly to the longitudinal direction of the third rack 331;
A third pinion gear 332 coupled to the first rotation shaft 333 and engaged with the third rack 331; And
And first transmission gears (334) coupled to both ends of the first rotation shaft (333) and engaged with the first pinion gear (312) of the plurality of first actuating parts (310)
The second driving unit 340 may include:
A second cylinder 345 including a second cylinder rod 345a;
A fourth rack (341) connected to the second cylinder rod (345a) and moving along the axial direction of the second cylinder rod (345a) by the forward and backward movement of the second cylinder rod (345a);
A second rotation shaft 343 disposed perpendicularly to the longitudinal direction of the fourth rack 341;
A fourth pinion gear 342 coupled to the second rotation shaft 343 and engaged with the fourth rack 341; And
And second transmission gears (344) coupled to both ends of the second rotation shaft (343) and meshing with the second pinion gear (322) of the second actuating part (320) Common foam mold of refrigerator case.
KR20140113964A 2014-08-29 2014-08-29 Common use for refrigerator case KR101485365B1 (en)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2018070642A1 (en) * 2016-10-13 2018-04-19 주식회사 은광기전 Apparatus for reversing refrigerator cabinet foam mold
KR101895844B1 (en) 2016-12-02 2018-09-06 (주)은광기전 Device for adjusting position of deck upper parts of mold for forming refrigerator cabinet
KR101903513B1 (en) 2017-06-16 2018-11-07 (주)은광기전 Mold for forming refrigerator cabinet having dual operating stage
KR101946240B1 (en) * 2017-12-05 2019-05-20 (주)은광기전 Common use for refrigerator case
KR20190057817A (en) * 2017-11-20 2019-05-29 김철희 refrigerator foaming apparatus

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KR970042155A (en) * 1995-12-11 1997-07-24 배순훈 High speed feeder of foam mold trolley for refrigerator
KR20070081478A (en) * 2006-02-13 2007-08-17 주식회사 은광기전 A bubbling mold of case for refrigerator
KR20110134218A (en) * 2010-06-08 2011-12-14 삼성전자주식회사 Method for foaming refrigerator cabinet
KR101347393B1 (en) 2012-10-19 2014-01-24 에이테크솔루션(주) Forming mold easy to change length for refrigerator door

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KR970042155A (en) * 1995-12-11 1997-07-24 배순훈 High speed feeder of foam mold trolley for refrigerator
KR20070081478A (en) * 2006-02-13 2007-08-17 주식회사 은광기전 A bubbling mold of case for refrigerator
KR20110134218A (en) * 2010-06-08 2011-12-14 삼성전자주식회사 Method for foaming refrigerator cabinet
KR101347393B1 (en) 2012-10-19 2014-01-24 에이테크솔루션(주) Forming mold easy to change length for refrigerator door

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018070642A1 (en) * 2016-10-13 2018-04-19 주식회사 은광기전 Apparatus for reversing refrigerator cabinet foam mold
KR101895844B1 (en) 2016-12-02 2018-09-06 (주)은광기전 Device for adjusting position of deck upper parts of mold for forming refrigerator cabinet
KR101903513B1 (en) 2017-06-16 2018-11-07 (주)은광기전 Mold for forming refrigerator cabinet having dual operating stage
KR20190057817A (en) * 2017-11-20 2019-05-29 김철희 refrigerator foaming apparatus
KR102250129B1 (en) 2017-11-20 2021-05-07 김철희 refrigerator foaming apparatus
KR101946240B1 (en) * 2017-12-05 2019-05-20 (주)은광기전 Common use for refrigerator case
WO2019112198A1 (en) * 2017-12-05 2019-06-13 주식회사 은광기전 Height-adjustable common foaming mold for manufacturing refrigerator case

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