KR20170032611A - Manufacturing method and device of cooking container for induction range enabling of indicating logo or mark - Google Patents

Manufacturing method and device of cooking container for induction range enabling of indicating logo or mark Download PDF

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Publication number
KR20170032611A
KR20170032611A KR1020150130143A KR20150130143A KR20170032611A KR 20170032611 A KR20170032611 A KR 20170032611A KR 1020150130143 A KR1020150130143 A KR 1020150130143A KR 20150130143 A KR20150130143 A KR 20150130143A KR 20170032611 A KR20170032611 A KR 20170032611A
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South Korea
Prior art keywords
magnetic steel
steel plate
brand
container
steel sheet
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Application number
KR1020150130143A
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Korean (ko)
Inventor
이대호
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이대호
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Priority to KR1020150130143A priority Critical patent/KR20170032611A/en
Publication of KR20170032611A publication Critical patent/KR20170032611A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
    • B22D17/24—Accessories for locating and holding cores or inserts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Cookers (AREA)

Abstract

The present invention provides a manufacturing device for a cooking container for an induction range, capable of automatically indicating a brand during a process of supplying molten aluminum, and a manufacturing method for the same. The manufacturing device for a cooking container for an induction range has high productivity by easily fixing and installing a stainless board used as a floor and guarantees even heating as a cooking container has good adhesion in use. The manufacturing device for a cooking container for an induction range is formed by a die casting method in which a magnetic steel sheet and the molten aluminum are integrally casted as the magnetic steel sheet having multiple elastic protrusions on the bottom of a female mold as a kitchen container bottom material is located on the female mold and a male mold for a cooking container, and as the molten aluminum is supplied to the female and male molds through a gate for injecting molten metal. The female and male molds are operated in a vertical direction, and a punching hole with the diameter of 20-50mm is formed at the center of the magnetic steel sheet. A fixing protrusion fixing the position of the magnetic steel sheet by being inserted into the punching hole is formed in the female mold. A brand forming unit indicating the brand by an engraving part or an embossed part by engraving the upper surface of the fixing protrusion is formed. After the punching hole of the magnetic steel sheet is inserted and mounted into the fixing protrusion, the magnetic steel sheet is integrally casted with the molten aluminum when the molten aluminum is injected through the gate for injecting the molten metal. Therefore, the container having the bottom formed as the stainless board is formed, and the engraved or embossed brand is formed on the bottom of the container by the brand forming unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking device and a manufacturing method of a cooking container for a cooking device,

The present invention relates to an apparatus and a method for manufacturing a cooking vessel for an induction range by a die casting method and, more particularly, to a manufacturing apparatus for a cooking vessel for a induction cooking stove capable of displaying brands such as logo or trademark at the center of the bottom of the cooking vessel, And a manufacturing method thereof.

Generally, an induction range is provided with a coil for generating a magnetic field by applying a high voltage to the induction range, and when the high voltage is applied to the coil, a magnetic field is induced. In this induction range, It is based on the principle that the magnetic body is heated.

Therefore, a common kitchen container uses non-magnetic aluminum or stainless steel (SUS304) to prevent rust, while a kitchen container used for induction cooking stove must have at least the portion of the induction range that touches the grill, that is, do.

In other words, the material used at the bottom of the kitchen container for the induction range should contain the Fe component.

A kitchen container such as a pot, a frying pan, a kettle, a pressure cooker, etc. used in an induction cooking stove is briefly described. A magnetic steel plate is attached to the bottom surface of the kitchen container body as a nonmagnetic material.

Normally, 27 kinds of stainless steel (SUS304) are used as the body of the kitchen container, and 24 kinds of stainless steel (SUS430) having Fe component are used as magnetic steel sheets.

However, kitchen containers made of different materials such as stainless steel kitchenware or aluminum and steel plate kitchen containers can be manufactured by the welding method but can not be manufactured by a die casting method which is simple and mass-producible It is.

1 is a view showing a method of manufacturing a kitchen container for induction cooking according to the prior art. 1, a plurality of magnets 25 are coupled to the bottom surface 15 of the female mold 20, and a plurality of magnets 25 are coupled to the bottom surface 15 of the female mold 20, .

A state in which the magnetic steel sheet 30 is integrally molded in the kitchen container by the female and male molds 20 and 20 constructed as described above will be described.

First, the magnetic steel plate 30 is placed on the bottom surface 15 of the female die 20. [ At this time, the female die 20 is preheated to a predetermined temperature by the heating means so that the magnet 25 is not deformed by the heat radiation. When the magnetic steel plate 30 is tightly fixed to the bottom surface 15 of the female die 20 by the magnet 25, the molten aluminum is introduced into the female and male molds 10 and 20 by the die casting apparatus, do.

At this time, the magnetic steel plate 30 fixed to the bottom surface 15 of the female die 20 by the magnet 25 is molded integrally with the molten aluminum.

The kitchen container body and the magnetic steel plate, which are nonmagnetic materials, could be integrally formed in the same manner as described above. However, there are various problems in forming the non-magnetic kitchen container body and the magnetic steel sheet by this method.

1, since the magnetic force of the magnet 25 provided on the bottom surface 15 of the female die 20 is lowered and the adhesion with the magnetic steel plate 30 is lowered after a certain period of time, There is a problem that molten aluminum flows into the space between the magnetic steel plate 30 and the magnet 25 during molding and there is a problem that aluminum formed on the bottom surface of the magnetic steel plate 30 must be removed after the kitchen container is molded .

When the kitchen container and the magnetic steel plate are integrally formed in the same manner as described above, the molten aluminum is not finely introduced into the corner between the male mold 10 and the female mold 20. Therefore, There is a problem that it can not be provided.

In view of this, Korean Patent No. 10-0402929 discloses a kitchen container for an induction cooking stove, in which the cooking vessel body is made of aluminum and a part of the magnetic steel plate is buried on the bottom surface, A method of manufacturing by this method has been proposed.

2 and 3, a kitchen container made of a stainless steel-based magnetic steel plate 30 as a bottom plate is manufactured by a die-casting method. The kitchen container- There is provided a magnetic steel plate 30 which is a floor plate of a kitchen container in which a plurality of elastic protrusions 32 are radially protruded and arranged around a fixing through hole 31 at a central portion by a mold 10 and a press punching method. A fixing protrusion 21 is integrally formed on the inner bottom surface 15 of the female mold 20 and a plurality of elastic protrusions 21 protruding and arranged in the radial direction around the fixation hole 31 at the center of the magnetic steel plate 30, The fixing hole 31 of the magnetic steel plate 30 is inserted into the fixing protrusion 21 of the female mold 20 so that the female mold 32 faces the male mold 10 and the male and female molds 10, The magnetic steel sheet 30 is pressed against the bottom surface 16 of the female die 20 while the end portion 32a of the elastic stone portion 32 of the magnetic steel sheet 30 is bent and bent on the bottom surface 16 of the male die 10 The female die 20 is moved forward and backward in the horizontal direction in a die casting machine (not shown), and the male die 10 is fixed. The female die 20 is fixed to the female die 20, The fixing hole 31 in the central portion of the magnetic steel plate 30 which is the floor of the kitchen container is inserted into the fixing protrusion 21 of the inner center portion of the main body portion of the kitchen container 10 with the elastic protrusion 32 facing the male mold 10, Mold (1 The magnetic steel sheet 30 positioned between the bottom faces 15 and 16 of the male and female molds 10 and 20 is resiliently mounted by the elastic protrusions 32, The molten aluminum is supplied through the gate 60 for injecting molten metal in the state where the female and male dies 10 and 20 are assembled to the kitchen 15, The magnetic steel sheet 30 and the molten aluminum are integrally cast by the die casting method by feeding the magnetic steel sheet 30 and the magnetic steel sheet 30 fixed to the female mold 20 The elastic protruding portion 32 is bent as the pointed end portion 32a touches the bottom surface 16 of the male mold 10 and acts as an elastic body A gap is not generated between the bottom surface 15 of the female die 20 and the magnetic steel plate 30 and the molten aluminum The elastic protrusion 32 of the magnetic steel plate 30 is buried in the bottom surface of the aluminum plate and firmly engaged with the bottom plate of the magnetic steel plate 30 so as to prevent the magnetic steel plate 30 from being separated from the bottom surface of the kitchen container.

However, according to the conventional die casting method of the above-described prior invention, since the male and female molds 20 and 10 are erected and operated in the horizontal direction, the magnetic steel sheet 30 having a thickness of about 0.6 to 0.8 mm, which is a stainless steel plate, A small protrusion 31 having a diameter of 2 to 3 mm and a fixing protrusion 21 having a diameter of 2 to 3 mm are formed on the inner surface of the female mold 20, The through hole 31 is fitted into the recess 31 so that the cooking cavity can be inserted into the recessed surface 21 of the cooking cavity as shown in FIG. ) 21a is left in the center. In general cooking vessels, which are not for induction purposes, a brand and a country of manufacture are displayed at the center of the bottom surface of the vessel. In the case of the cooking vessel for induction cooking prepared by the above method, a diameter of 2 to 3 mm There is a problem that a small groove of a small size is left and a mark such as a brand can not be displayed. Moreover, the magnetic steel plate 30 is fixed to the fixing projection 21 by the application of the horizontal die casting method, There is a problem that the productivity is greatly reduced because there is a problem.

If the height of the through hole 31 is enlarged to, for example, 25 to 50 mm, if the height of the fixing protrusion 31 does not become larger than the above, the plurality of elastic protrusions 32 of the magnetic steel plate 30, The magnetic steel plate 30 is not easily caught by the fixing protrusions, and the height of the fixing protrusions 31 is increased so that the fixing protrusions 31 can be easily caught. In this case, The depth of the aluminum body corresponding to the area of the grooves (usually 40 to 50 mm in diameter) is too thin by the die casting, which may cause defective products, and the magnetic steel plate may bend like a bulge, The magnetic signboard is very difficult to hang, and when the die is mounted in the mold, the contact surface between the die and the mold is lifted, so that the molten aluminum penetrates into the lifting portion of the mold And it is necessary to take various measures in order to eliminate this point. Therefore, the productivity is lowered when the die casting operation is performed, and the bottom surface of the manufactured cooking vessel is not maintained in a horizontal position, It is the cause of the defective part which is not generated partly, and it is practically impossible to produce it.

[Patent Document 1] Korean Patent No. 10-0402929

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a stainless steel sheet for use in a process for supplying molten aluminum, And to provide a manufacturing apparatus for a cooking container for an induction cooking stove which can automatically display a brand and a manufacturing method thereof.

According to an aspect of the present invention, there is provided an arm and a male mold for a cooking vessel, and a magnetic steel plate having a plurality of elastic projections as a kitchen vessel bottom material on a bottom surface of the female mold, 1. A manufacturing apparatus for a kitchen container for induction cooking by a die casting method in which a magnetic steel sheet and molten aluminum are integrally cast by feeding into a female / male mold,

Wherein the male and female molds are arranged to operate in a vertical direction, and a punching hole having a diameter of 20 to 50 mm is formed at the center of the magnetic steel sheet; A fixing protrusion that is fitted in the punching hole and fixes the magnetic steel sheet to the position is formed in the female mold; And a brand forming part for displaying a brand by engraved or depressed parts on the upper surface of the fixing protrusion is provided so that the punching hole of the magnetic steel plate is fitted to the fixing protrusion and then melted When the aluminum is injected, the magnetic steel plate is integrally cast and the bottom surface of the stainless steel plate is obtained. At the same time, the brand forming unit forms a negative or angular shape of the brand on the bottom surface of the container.

According to a preferred embodiment of the present invention, the plurality of elastic projections are spaced apart from each other by a plurality of concentric lines around the periphery of the punching hole, and a plurality of holes filled with aluminum melt are formed between the plurality of elastic projections .

According to the embodiment of the present invention, at least one hole selected from the plurality of holes or at least one hole formed separately around the punching hole, and a position fixing projection for fixing the magnetic steel plate to the female mold, And is further provided separately in the mold.

According to the apparatus and method for manufacturing a cooking vessel for a induction cooking stove of the present invention, the vertical die casting method in which the mold is vertically operated can be applied to easily fix and install the stainless steel plate used as a floor surface, It is possible to display the brand of logos or characters automatically in the form of embossing or embossing in the casting process of supplying molten aluminum.

1 is a view for explaining a conventional technique.
Figures 2 and 3 are diagrams illustrating the prior art.
Figure 4 is a photograph of the prior art embodiment of Figure 2;
5 is a block diagram showing a manufacturing process of a cooking container for an induction cooking stove according to the present invention,
6 is a view showing a magnetic steel sheet used in manufacturing a cooking container for an induction cooking stove according to the present invention,
7 is a view showing a mold apparatus for manufacturing a cooking vessel for induction cooking according to the present invention,
8A and 8B are enlarged views of a main portion of a female die used in manufacturing a cooking container for induction cooking according to the present invention, Sectional shape of the in-groove forming portion.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings in order to fully understand the present invention. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. In the following description, well-known functions and constructions which are considered to be unnecessarily obscured by the gist of the present invention will be omitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 5 is a block diagram showing a manufacturing process of a cooking vessel for induction cooking according to the present invention, FIG. 6 is a view showing a magnetic steel plate used for manufacturing a cooking vessel for induction cooking according to the present invention, FIG. 8 is an enlarged view of a main part of a female die used in manufacturing a cooking container for an induction cooking stove according to the present invention; FIG. 8 is a view showing a mold apparatus for manufacturing a cooking vessel for induction cooking according to the invention;

The overall manufacturing process of the cooking pot for induction cooking according to the present invention will be described with reference to FIG. 5. The stainless steel plate having a magnetic body component for inducing a magnetic field by induction coil of the induction cooking stove is used for press punching and bending (Step a) of providing a magnetic steel plate 72 having a plurality of elastic projections 70 and a plurality of holes 71 by means of a plurality of holes 70; A punching hole (not shown) having a relatively large size, for example, 20 to 50 mm, preferably 30 to 50 mm in diameter, is formed in the central portion of the magnetic steel plate 72, rather than the holes 71 having a diameter of 3 to 4 mm 73) (step b); Forming a fixing protrusion 76 for fixing the magnetic steel plate 72 to the lower mold 75 of the upper and lower dies 74 and 75 which are die casting the cooking vessel by being inserted into the punching hole 73; ; (Step D) of forming a brand forming portion 78 on the upper surface of the fixing protrusion 76, in which a character or a logo is displayed by an engraved 77 or embossed; Mounting the punching hole 73 of the magnetic steel plate 72 in alignment with the fixing protrusion 76 of the lower mold 75 (step e); Lowering and covering the upper mold 74 in the form of a cooking vessel in the lower mold 75 and supplying the molten aluminum to the cavity 79 in the upper and lower dies 74 and 75 and performing die casting (step bar); And a step (step j) of demolding the molds 74 and 75 after the die casting to eject the prepared cooking vessel.

According to the present invention, at least one or two holes selected from the plurality of holes 71 are selected as the positioning holes 80 around the punching holes 73 of the magnetic steel plate 72, It is possible to form at least one or two positioning holes separately and to selectively form the positioning projections 81 fitted in the positioning holes 80 in the female mold 75. [

6 shows a magnetic steel plate 72 used as a base plate of a cooking vessel for induction cooking according to the present invention. The magnetic steel plate 72 is made of stainless steel having magnetism, for example, 24 kinds of Fe A stainless steel (SUS430) plate is used to cut into a circle having a predetermined diameter. In the center of the circularly cut magnetic steel sheet 72, a diameter of about 20 to 50 mm, preferably 30 to 50 mm, That is, a plurality of elastic protrusions 70 are formed by forming a punching hole 73 having a size slightly larger than that of a coin, partially cutting the plate material into a circular concentric arrangement structure around the periphery thereof, And a plurality of holes 71 each having a size of 3 to 5 mm so as to be disposed between the elastic protrusions 70. The elastic protrusions 70 protruding upward are formed in the shape of a cavity 79) And is embedded in the bottom surface of the aluminum container body so that the magnetic steel plate 72 is not separated from the aluminum container body.

The die casting method of the present invention uses a vertical die casting apparatus, which is different from the horizontal type (horizontal operation of mold) applied to conventional cooking vessels. Therefore, as shown in FIG. 6, the upper and lower molds 74 Is positioned on the vertical axis line and the upper mold 74 is operated in the vertical direction.

The lower mold 75 is fixed at a position corresponding to the punching hole 73 as shown in the enlarged view of FIG. 8 ((a) is a plan view of the recess and (b) is a cross- The diameter of the fixing protrusion 76 is the same as the diameter of the punching hole 73 and the height h is 0.5 to 2 mm and preferably 0.5 to 1 mm.

The upper surface of the fixing protrusion 76 of the lower mold 75 is formed with a depressed portion 77 (concave shape) or embossed (the concave portion is concave) A brand molding section 78 is provided which is capable of displaying characters, logos, and the like by means of a molding section 78. The brand molding section 78 is used to display a brand such as a logo or a character trademark The fixing protrusion 76 has a diameter of 20 to 50 mm, preferably 30 to 50 mm.

On the other hand, in order to display the brand, it is advantageous to reduce the protrusion height h of the fixing protrusion 76 as small as possible in order to reduce the bottom surface and the bottom surface of the magnetic steel plate 72. In this case, In order to reliably prevent the occurrence of uncertainty, at least one hole 80 selected from a plurality of holes 71 located nearest to the punching hole 73 is selected, Or at least one hole may be separately formed for the positioning hole (two positioning holes may be provided), and the positioning hole 80 is formed as shown in FIG. 8, The positioning protrusion 81 is fitted to the lower mold 75 and selectively protruded to the corresponding position of the lower mold 75.

Hereinafter, the process of manufacturing the cooking container by the die casting of the present invention will be described in more detail.

6 and 7, the punching hole 73 of the magnetic steel plate 72 is fitted to the fixing protrusion 76 formed on the inner bottom surface of the lower mold 75 to be horizontally placed, The elastic protrusion 70 of the magnetic steel plate 72 protrudes to the upper side.

When the magnetic steel plate 72 is attached to the lower mold 75, a gap 79 is formed between the magnetic steel plate 72 and the lower mold 75 (when the molten aluminum is filled in the cavity, the cooking vessel body is formed) The molten aluminum (alloy) molten metal is melted through the gate 82 provided in the upper mold 74 or the lower mold 75, .

The molten aluminum supplied through the gate 82 fills the fused space 79a which is a space formed between the molten steel plate 74 and the elastic plate 70. At this time, the elastic projections 70 protruding toward the fused space 79a The molten liquid supplied to the upper surface of the fixing protrusions 76 reaches the brand forming portion 78 and the melted grooves 77, that is, The portion of the melt 77 filled in the recess 77 or the portion between the recesses on the contrary forms a brand notation such as a logo or a character trademark.

When the molten aluminum is injected and solidifies after a predetermined period of time, the upper mold 74 is lifted to be demoulded. When the molten metal in the cavity is solidified, Is ejected by operating an eject pin (provided on the lower mold but not shown).

The fixed protrusions 76 serve as a brand forming portion 78 so that the molten metal is introduced into the engraved portion 77 through the die casting operation. A letter mark or a logo is automatically displayed in an engraved or embossed form by filling the recessed groove portion (refer to 'KB' character inverted in FIG. 8), so that the labeled cooking container can be obtained at once through die casting.

The present invention adopts a vertical operation mode as compared with the conventional die casting method of the horizontal operation type so that the diameter of the fixing protrusions 76 can be increased while minimizing the height of the fixing protrusions 76, It is possible to mark the surface of the fixing protrusion 76 which is easily enlarged so that the surface of the fixing protrusion 76 is engraved with the engraved engagements 77 and the molten metal fills the engraved engraved portion 77 during the casting and appears as an engraved or embossed shape, It is possible to manufacture a cooking vessel for an induction range in which the stability and productivity of production are high and the brand is displayed (for example, a trademark "KD" is displayed after casting as shown in FIG. 8).

In the foregoing, preferred embodiments of the present invention have been described herein, which is the best mode known to the inventors for carrying out the invention. It will be readily apparent to those skilled in the art that modifications of these preferred embodiments are possible from the foregoing description. The inventors expect that skilled artisans will employ these variations, and the inventors intend to practice the invention in addition to those specifically described above. Accordingly, the invention includes all modifications that are equivalent to the subject matter recited in the claims appended hereto as permitted by applicable law. Furthermore, all possible combinations of the above-mentioned elements will be included in the present invention unless specifically mentioned or excluded in the present specification.

70: elastic projection
71: hole
72: Magnetic steel plate (stainless steel plate)
73: Punching hole
74: Upper mold
75: Lower mold
76: Fixing projection
77: engraved (grooved)
78: Brand forming section
79: Pore
79a: fusion space (void)
80: positioning hole
81: Positioning projection
82: Gate

Claims (3)

A magnetic steel plate having a plurality of elastic projections as a kitchen container bottom material is placed on the bottom surface of a female mold and molten aluminum is supplied into the female and male molds through a gate for injecting molten metal to form a magnetic steel plate, An apparatus for manufacturing a kitchen container for induction cooking by a die casting method in which molten aluminum is integrally cast,
Wherein the male and female molds are arranged to operate in a vertical direction, and a punching hole having a diameter of 20 to 50 mm is formed at the center of the magnetic steel sheet; A fixing protrusion that is fitted in the punching hole and fixes the magnetic steel sheet to the position is formed in the female mold; And a brand forming part for displaying a brand by engraved or depressed parts on the upper surface of the fixing protrusion is provided so that the punching hole of the magnetic steel plate is fitted to the fixing protrusion and then melted Wherein when the aluminum is injected, the magnetic steel plate is integrally cast and the bottom surface of the stainless steel plate is obtained, and at the same time, the engraved or formed embossed brand is formed on the bottom surface of the container. Apparatus for manufacturing cooking vessel for induction cooking stove. 2. The apparatus according to claim 1, wherein the plurality of elastic projections are spaced apart from each other so that a plurality of rows are concentric with the periphery of the punching hole, and a plurality of holes filled with molten aluminum are formed between the plurality of elastic projections Of the cooking container for the induction range. The method of manufacturing a magnetic steel plate according to claim 2, wherein a position fixing projection for fixing the magnetic steel plate to the female mold is inserted into at least one hole or at least one hole formed separately from the plurality of holes around the punching hole, Wherein the cooking device is provided with a separate cooking device.
KR1020150130143A 2015-09-15 2015-09-15 Manufacturing method and device of cooking container for induction range enabling of indicating logo or mark KR20170032611A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101865625B1 (en) 2017-04-07 2018-06-08 공재철 Induction range vessel manufacturing equipment using die casting and The induction range vessel
KR102195435B1 (en) 2019-11-01 2020-12-29 김용경 The induction range vessel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100402929B1 (en) 2000-09-01 2003-10-30 정우실업 주식회사 Producing method of kitchen utensil for induction range and device thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100402929B1 (en) 2000-09-01 2003-10-30 정우실업 주식회사 Producing method of kitchen utensil for induction range and device thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101865625B1 (en) 2017-04-07 2018-06-08 공재철 Induction range vessel manufacturing equipment using die casting and The induction range vessel
KR102195435B1 (en) 2019-11-01 2020-12-29 김용경 The induction range vessel

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