KR100404360B1 - cookware and method for manufacturing the cookware - Google Patents

Abstract

The present invention relates to a cooking vessel using an insert method of a die cast, and in particular, when a built-in far-infrared radiator capable of emitting a large amount of far-infrared radiation does not cause deformation even in thermal expansion or contraction, aluminum is formed so that a coupling protrusion is formed at the bottom center. The upper plate is cast from the alloy, the coupling groove is formed in the upper surface of the center, and the insert bar is integrally formed at the bottom and the lower plate is cast in aluminum alloy so that the receiving portion is bent upwardly formed at the rim, and the powder is formed into the receiving portion. A core forming step of filling the far infrared radiator and then combining the upper and lower plates to seal the outside to form a far infrared radiator core; A deformation prevention process of forming a plurality of tapered pins to form a plurality of tapered holes communicating with the bottom of the lower plate and the outside of the lower mold in the middle of the lower mold of the die cast machine after the core forming process; A setting step of setting the far-infrared radiator core to the middle and center positions between the upper mold and the lower mold after the deformation preventing process; An injection process of injecting an injection-molded product by injecting a molten aluminum alloy at high speed and high pressure between the upper mold and the lower mold after the setting process; A separation step of lifting the injection molded product from the lower mold by raising the upper mold after the injection process and pressing the bottom end of the insert rod protruding from the bottom of the lower mold; It relates to a method of manufacturing a cooking vessel and a cooking vessel comprising a cutting step of cutting the insert rod protruding to be the same as the bottom surface of the injection-molded article after the separation process.

Description

Method for manufacturing a cooking vessel and its cooking vessel {cookware and method for manufacturing the cookware}

The present invention relates to a method of manufacturing a cooking vessel using an insert method of a die cast, and more particularly, to a method of manufacturing a cooking vessel such that deformation does not occur even when thermal expansion or contraction occurs when a far infrared radiator capable of emitting a large amount of far infrared rays is embedded. And a cooking vessel thereof.

Commonly used cooking containers are mainly injection-molded by a known die-casting method, and in recent years, cooking containers manufactured by the die-casting method as described above can perform more delicious cooking without destroying the nutrients of the food. It is a situation that a cooking vessel including a far-infrared radiator that emits a lot of far-infrared rays by heating is being manufactured.

As described above, a method of using a far-infrared radiator in a conventional cooking container mainly includes a method of attaching a separate far-infrared radiator to the outside or inside of an injection-molded cooking container directly or indirectly, but it is inconvenient to use. Not only was there a problem, but also the durability also fell remarkably.

In order to solve such a problem, there has been a conventional method of injection molding the far infrared emitter by powdering the cooking vessel during injection molding. In other words, the problem has not been so concentrated that concentrated on the side of the mouth.

In addition, there was a method of injection molding by granulating the far-infrared radiator, but also due to the thermal expansion coefficient of the particles and the aluminum alloy of the far-infrared radiator, not only the peeling phenomenon occurred on the surface structure but also the surface was formed rough or bubbles. This resulted in a problem that the value as a cooking vessel was significantly lowered.

Accordingly, the present invention has been made to solve the conventional problems as described above, the object is that the deformation does not occur even when thermal expansion or contraction even when the built-in far-infrared radiator capable of emitting a large amount of far-infrared radiation by the injection molding method To avoid that.

Another object of the present invention to provide a cooking container injection-molded by the above manufacturing method.

In order to achieve the above object, the present invention provides a method of injection molding a cooking vessel, the top plate being cast from an aluminum alloy to form a coupling protrusion at the bottom center, a coupling groove at the top of the center, and an insert rod at the bottom. And forming a lower plate cast from an aluminum alloy to form an accommodating portion bent upward, and filling the powder with a far infrared emitter in the form of a powder, then combining the upper plate and the lower plate and sealing the outside to form a far infrared radiator core. A core forming step of performing; A deformation prevention process of forming a plurality of tapered pins to form a plurality of tapered holes communicating with the bottom of the lower plate and the outside of the lower mold in the middle of the lower mold of the die cast machine after the core forming process; A setting step of setting the far-infrared radiator core to the middle and center positions between the upper mold and the lower mold after the deformation preventing process; An injection process of injecting an injection-molded product by injecting a molten aluminum alloy at high speed and high pressure between the upper mold and the lower mold after the setting process; A separation step of lifting the injection molded product from the lower mold by raising the upper mold after the injection process and pressing the bottom end of the insert rod protruding from the bottom of the lower mold; It characterized in that it comprises a cutting step of cutting the insert rod protruded to be the same as the bottom surface of the injection molded article after the separation process.

A cooking vessel injection molded of an aluminum alloy, the bottom surface of the cooking vessel is cast to form a coupling protrusion in the bottom center; A lower plate which is formed of an aluminum alloy such that a coupling groove is formed in the center upper surface, and an insert rod is integrally formed in the bottom surface, and the upper portion is bent upward and the receiving portion is formed; The accommodating portion is filled with a powder-like far-infrared radiator is characterized in that the core portion is built to be combined.

In the above, the bottom of the cooking vessel is characterized in that the deformation preventing portion is formed a plurality of tapered holes in communication with the lower plate of the core portion is formed.

1 is a high precision of the process of the present invention.

2a to 2f are main parts of the process of the present invention,

Figure 2a is a main part showing a core forming process.

Figure 2b is a main part showing a deformation prevention process.

Figure 2c is a principal part showing a setting process.

Figure 2d is a principal part showing an injection process.

Figure 2e is a principal part showing a separation process.

Figure 2f is a principal part showing a cutting process.

Figure 3 is a cross-sectional view showing a cooking vessel of the present invention.

Explanation of symbols for the main parts of the drawings

1: core formation process

10: far infrared emitter core

12: engaging projection 15: the top plate

16: coupling groove 17: insert rod

18: receiving unit 19: the top plate

S: far infrared emitter

2: deformation prevention process

20: tapered pin

3: Setting process

30: lower mold 300: upper mold

4: Injection process

40: injection molded product

5: release process

50: taper hole 500: deformation prevention part

6: cutting process

100: cooking vessel

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

1 is a process diagram showing the process of the present invention, Figures 2a to 2e is a principal part showing the process of the present invention, Figure 2a is a principal part showing a core forming process.

In the method for injection molding the cooking vessel as shown,

The present invention is the upper plate 15 is cast from an aluminum alloy to form a coupling protrusion 12 is coupled to the coupling groove of the lower plate to be described later to the bottom of the center, and the coupling groove 16 is inserted into the coupling projection into the upper surface of the center (16). ), An insert rod 17 is integrally formed on the bottom surface, and a lower plate 19 cast from an aluminum alloy is formed on the edge portion to form an accommodating portion 18 that is bent upward, and is roughly formed into the accommodating portion 18. After filling the far-infrared radiator (S) in the form of powder fired at 1,300 ℃ or more and combine the upper plate 15 and the lower plate 19 and seal the outside in the same manner as a general welding to form a far-infrared radiator core (10). A core forming step (1) is performed.

By using the aluminum alloy in the upper plate and the lower plate is to minimize the thermal history of the heating.

In addition, the far-infrared radiator is put in an appropriate amount to be proportional to the size of the cooking vessel that is injection-molded to correspond to the thermal expansion of the aluminum alloy.

2B is a principal view showing a deformation preventing process.

As shown, after the core forming process, a plurality of taper holes are formed in the middle of the lower mold 30 of the general die cast machine and communicate with the outside to the bottom of the lower plate and the bottom of the injection molded article according to the injection process described later. Deformation prevention process (2) is formed to form a plurality of tapered pins 20 that can prevent deformation.

In the above, the tapered pin 20 is preferably installed at intervals of 90 ° from the center of the lower mold (30).

2C is a principal view showing the setting process.

As shown, the upper mold 300 of the die cast machine and the lower mold 30 on which the tapered pins 20 are formed, which are to be injection molded for the cooking vessel requiring the far-infrared radiator core 10 after the deformation preventing process. The setting step (3) is carried out to set the center and center between the predetermined positions.

In other words, in the process of forming the bottom surface of the cooking vessel according to the injection molding to be described later to set so that the far-infrared radiator core can be accurately positioned in the middle and center without bias.

2D is a principal view showing an injection process.

As shown, an injection-molded product required by injecting a molten aluminum alloy, melted and maintained at about 660 ° C. to 700 ° C. at high speed and high pressure, with a filling part formed between the upper mold 300 and the lower mold 30 after the above-described setting process. The injection step 4 of injection molding the 40 is performed.

2E is a principal view showing a detachment process.

As shown, after the above injection process, the upper mold 300 is raised by the operation of the die cast machine, and the bottom of the insert rod 17 of the lower plate protruding to the bottom of the lower mold 30 is replaced with a conventional injection pin. The separation process 5 which pressurizes and separates the injection molded product 40 from the lower mold 30 is performed.

In the above, a plurality of tapered holes 50 are formed on the bottom surface of the injection molded product 40 in communication with the bottom surface of the lower part of the core part embedded by the tapered pin 20 formed in the lower mold during the deformation preventing process. Accordingly, the deformation due to the taper hole can be prevented even by thermal contraction expansion due to heating during use.

In addition, as the injection molded product is separated from the lower mold by using an insert rod, the space between the embedded far-infrared radiator core and the injected aluminum alloy can be minimized, and deformations such as warpage and warpage can be minimized. will be.

It is a principal part which shows the cutting process.

As shown in the drawing, a cutting step 6 for cutting the bottom end of the insert rod 17 protruding from the injection molding product 40 is performed after the separation step.

In the above, the cutting process 6 does not merely cut the hem of the protruding insert rod 17, i.e., cuts only the hem of the protruding insert rod 17 in order to prevent structural changes of the embedded far-infrared radiator core due to the impact thereof. Cut the entire bottom of the face.

As such, when the cutting process is completed, if the coating layer is formed to prevent food from sticking to the inner side and the outer side of the injection molded article by a known method, the manufacture of the desired product is completed.

3 is a cross-sectional view showing the cooking vessel of the present invention.

As shown, the cooking container 100 of the aluminum alloy manufactured by the above-described manufacturing method includes: an upper plate 15 cast to form a coupling protrusion 12 at the center of the bottom of the cooking vessel;

An aluminum alloy such that the coupling groove 12 is inserted into and coupled to the center upper surface thereof, and an insert rod 17 is integrally formed on the bottom surface thereof, and the receiving portion 18 is formed by bending upwardly at the edge thereof. Lower plate 19 is cast to;

The accommodating portion 18 is filled with a far-infrared radiator (S) in the form of powder is shown that the core portion 10 is formed to be combined.

Therefore, the heat is transferred to the core part by heating by the heating means during cooking to emit a large amount of far infrared rays from the far-infrared radiator embedded in the core part to warm or cook while minimizing nutrient destruction of the food contained in the cooking vessel. In addition, antibacterial and anti-odor action is to have a condition that can be achieved.

The bottom surface of the cooking vessel 100 forms a deformation preventing part 500 in which a plurality of taper holes 50 communicating with the lower plate 19 of the core part 10 are formed. Prevent deformation by expansion. At this time, the tapered hole is preferably formed at intervals of 90 ° from the center of the cooking vessel.

On the other hand, by containing more than 3% of potassium oxide (K ₂ O) in the far-infrared radiator to emit more large amount of far-infrared radiation emitted from the far-infrared radiator due to heating can be more easily transmitted from the aluminum alloy. It is desirable to.

As described above, the present invention prevents deformation such as warping or bending of the cooking vessel during the injection molding process to embed the far-infrared radiator into the cooking vessel and releases a large amount of far infrared rays from the far-infrared radiator upon heating. By doing so, it is possible to improve the quality and functionality of the cooking vessel, as well as to have a more delicious cooking effect.

In addition, by forming a tapered hole at a predetermined interval to the bottom of the cooking vessel also has the effect of minimizing deformation due to thermal shrinkage expansion due to heating.

In addition, as the far-infrared ray transmittance is improved, more far-infrared rays are emitted to the food, and thus side effects may be achieved.

Claims (3)

In the injection molding method of the cooking vessel, the upper plate 15 is cast from an aluminum alloy so that the coupling protrusion 12 is formed at the center of the bottom surface, the coupling groove 16 at the upper surface of the center, and the insert rod 17 at the bottom. Integrally formed and the lower plate 19 cast from an aluminum alloy to form a receiving portion 18 is bent upward in the rim portion and filled with a far-infrared radiator (S) in powder form with the receiving portion (18) A core forming step (1) of joining the upper plate 15 and the lower plate 19 to seal the outside to form a far-infrared radiator core 10; After the core forming process, a plurality of tapered holes are formed in the middle of the lower mold 30 of the die cast machine to communicate with the bottom and the outside of the lower plate to form a plurality of tapered pins 20 which can prevent deformation. Prevention process (2); A setting step (3) of setting the far-infrared radiator core (10) to the middle and center positions between the upper mold (300) and the lower mold (30) after the deformation preventing process; An injection process (4) of injecting a molten aluminum alloy at high speed and high pressure between the upper mold (300) and the lower mold (30) after the setting process (3); After the injection process to lift the upper mold 300 and the step of leaving the injection molded product 40 from the lower mold 30 by pressing the bottom end of the insert rod 17 protruding to the bottom of the lower mold ( 5) and; And a cutting step (6) of cutting the insert rod (17) protruding from the injection molded article (40) after the separation step. In the cooking vessel injection-molded with aluminum alloy, the bottom surface of the cooking vessel 100 is cast on the bottom plate 10 to form a coupling protrusion 12 in the bottom center; A lower plate 19 formed of an aluminum alloy such that a coupling groove 16 is formed on the center upper surface, and an insert rod 17 is integrally formed on the bottom surface thereof, and the receiving portion 18 is bent upwardly at an edge portion thereof; Cooking container, characterized in that the core portion (10) is built into the receiving portion (18) is filled with a powder form far infrared emitter (S). According to claim 2, The bottom of the cooking vessel 100 is characterized in that the deformation preventing portion 500 is formed a plurality of tapered holes 50 are formed in communication with the lower plate 19 of the core portion 10. Cooking container.