KR20180108258A - Simultneous molding device for shoe parts using induction heatein device - Google Patents

Abstract

The present invention relates to a device of simultaneously forming shoe parts using an induction heating device. The present invention relates to technology of simultaneously forming shoe parts using an induction heating device, which is capable of forming a mold in a slim form and rapidly heating the mold by using an induction. The device of forming a shoe includes an upper mold in an upper press and a lower mold in a lower press, and may form a shoe by engagement of the upper mold and the lower mold. A bulk molding compound (BMC) plate is respectively formed on an upper surface of the upper mold and a lower surface of the lower mold, and the induction heating device is mounted on the BMC plate such that the upper mold and the lower mold are heated by electromagnetic field. The upper mold and the lower mold are formed of a magnetic material, and a non-magnetic member is provided between the upper press and the upper mold and between the lower press and the lower mold, respectively so as to prevent heat from transferring to the upper press and the lower press and to function as a guide to enable the upper mold and the lower mold to be rapidly heated.

Description

Technical Field [0001] The present invention relates to a simultaneous molding device for shoe parts using an induction heating device,

The present invention relates to a device for simultaneous molding and forming shoe parts using an induction heating device, and more particularly, to a device for manufacturing a shoe part by using an induction heating system, Which is a technique for simultaneous molding and forming shoe parts using an induction heating device.

In the construction of a typical shoe, various developments are taking place in accordance with the development of modern industry in shoes and similar fields. In the case of the midsole of a shoe, various developments are made according to the purpose of the user such as the wearer comfort and convenience. In the field of a typical shoe midsole, it can largely be divided into a die-cutting method, a phylon method, an injection molding method, and a CMP (compression molding press) method.

In the case of die-cutting method, the product of the primary foaming agent is produced after cutting the original shape in two steps, which is advantageous in that the relative production cost is low. However, due to its weak physical properties and limitations in design expression, it is mainly applied to low-priced products. In the case of the pylon method, the product of the above-mentioned die-cutting method is reworked, and the product is formed by heating and cooling through a molding process, so that it can be solved in a conventional die-cutting method However, there is a limitation in solving the problem in that one composition is used, and the relative manufacturing process is complicated. In the case of the injection molding method, an automation configuration is added and the productivity can be increased accordingly, but the composition and mixing of the raw material for injection molding is difficult. In the case of the compressor molding press (CMP), the manufacturing process is simple in the manufacturing process, and it is possible to manufacture the midsole having excellent properties. However, it is essential to manufacture the prefoam and it is necessary that the preform is remolded. There is a problem that the production rate is low due to the increase of the process time in the process time.

In recent years, the necessity of high efficiency and high functional materials has been increased according to the diversification of shoes. In order to satisfy these properties, research on the foam through CMP process is proceeding. Accordingly, research has been conducted to solve the problem of the conventional art, which is caused by a decrease in the production rate due to an increase in the processing time. In order to simplify the process of the midsole of the shoe, the midsole of the shoe and the outsole of the shoe, A method of simultaneous operation is required.

KR 10-2010-0032561 A

Disclosure of the Invention The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method of molding a shoe of a shoe and an outsole of a shoe without shortening the reaction time, And it is an object of the present invention to provide a simultaneous molding and manufacturing apparatus for shoe parts using an induction heating device capable of performing molding adhesion.

According to another aspect of the present invention, there is provided a shoe molding machine for forming shoes by forming an upper mold in an upper press and a lower mold in a lower press, A BMC (Bulk Molding Compound) plate is installed on the lower surface of the lower mold, and the BMC plate is installed in the induction heating apparatus to allow the upper mold and the lower mold to be heated by an electromagnetic field, And a nonmagnetic member is provided between the upper press and the upper mold and between the lower press and the lower mold to block heat conduction to the upper press and the lower press, Is guided to be rapidly heated.

The upper metal mold or the lower metal mold is formed to correspond to each other and is formed to have the same thickness t1 and is formed to be thinner than the thickness t2 of the nonmagnetic member.

The upper mold and the lower mold have cooling passages formed therein and are connected to the cooling device 90 so as to be cooled by the inflow of cooling water.

The BMC plate is provided with a receiving groove in which the induction heating device is installed, and the receiving groove is formed in a zigzag shape.

The upper BMC plate and the lower BMC plate are integrally joined to each other, and the receiving groove is formed in the upper BMC plate or the lower BMC plate adjacent to the upper mold or the lower mold.

According to the present invention having the above-described configuration, the following effects can be expected.

The present invention according to the above-mentioned construction relates to a reaction apparatus which is mainly applied to a midsole or phylon of a footwear, in which a thermal energy is applied by using a high-frequency heating induction device to increase a rate of applying thermal energy, Simplify the process and shorten the reaction time. Further, it is possible to simultaneously mold the outsole of the shoe, thereby maximizing the production time and efficiency of the product.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of an apparatus for simultaneous molding and forming shoe parts using an induction heating apparatus according to an embodiment of the present invention; FIG.
Fig. 2 is a schematic view of a BMC plate. Fig.
Fig. 3 is an exemplary view in which an induction heating apparatus is installed in a BMC plate;
Fig. 4 is an example of production of a shoe part by a simultaneous molding and manufacturing apparatus using an induction heating apparatus. Fig.

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

FIG. 1 is a sectional view of an apparatus for simultaneously manufacturing a shoe part using an induction heating apparatus according to an embodiment of the present invention. FIG. 2 is a schematic view of a BMC plate, to be.

The present invention relates to a shoe molding apparatus, wherein an upper mold (20) is formed in an upper press (10), a lower mold (40) is formed in a lower press (30) An apparatus for simultaneously molding a shoe part using an induction heating device in which a BMC (Bulk Molding Compound) plate 50, an induction heating device 60 and a nonmagnetic member 70 are installed and heated by induction, to provide.

The upper press 10, the upper mold 20, the lower press 30 and the lower mold 40 are conventional ones in which a mold is installed in a press in injection molding. Therefore, detailed description thereof will be omitted. The BMC plate 50, the induction heating apparatus 60 and the nonmagnetic member 70 will be described in detail.

The BMC plate 50 accommodates an induction heating apparatus with a heat insulating material and also connects the molds (upper and lower molds) to presses (upper and lower presses).

The BMC plate 50 is installed on the upper mold 20, the upper surface, and the lower surface of the lower mold 40, respectively.

Herein, the BMC plate 50 is an abbreviation of Bulk Molding Compound. The BMC plate 50 is prepared by mixing a filler and the like in an unsaturated polyester resin first, then impregnating the glass fiber into the raw material, to be. It has a high heat resistance and can block heat conduction.

As shown in FIG. 2, the BMC plate 50 is provided with a receiving groove 51 in which the induction heating device 60 is installed, and the receiving groove 51 is formed in a zigzag shape.

As shown in FIG. 3, the induction heating apparatus 60 can be arranged at regular intervals, and the induction heating apparatus 60 can be disposed at regular intervals, The heat can be uniformly transferred to the upper and lower molds. The heat transfer to the mold has the effect of improving the molding quality of the midsole of the injection molded shoes.

Here, the induction heating apparatus adopts an induction coil.

The BMC plate 50 is detachable from the upper BMC plate 52 and the lower BMC plate 54 and is integrally formed by bolt connection and the integrated BMC plate 50 is connected to the adjacent upper mold 20 And the lower press 40 and the lower press 30 of the upper press 10, respectively. The receiving groove 51 is formed in the upper BMC plate 52 or the lower BMC plate 54 adjacent to the upper mold 20 or the lower mold 40.

The induction heating apparatus 60 is a means for heating the upper and lower dies 20 and 40.

The induction heating apparatus 60 is mounted on the BMC plate 50 and is heated by the electromagnetic force of the upper mold 20 and the lower mold 40 by applying external power to the upper mold 20, An injection material in the lower mold 40 can be injected to mold the shoe midsole.

At this time, the upper mold 20 and the lower mold 40 are formed of a magnetic material. In the present invention, the upper mold 20 and the lower mold 40 are formed of a steel material to easily receive heat from the induction heating device 60, .

The nonmagnetic member 70 is installed between the upper press 10 and the upper mold 20 and between the lower press 30 and the lower mold 40 so that the electromagnetic force generated by the induction heating device The electromagnetic field generated by the induction heating device is transmitted to the upper mold 20 and the lower mold 40 which are the magnetic bodies, As shown in FIG.

Here, an aluminum plate is adopted as the non-magnetic member.

Here, the upper metal mold 20 or the lower metal mold 40 are formed in a shape corresponding to each other and formed to have the same thickness t1 and relatively thinner than the thickness t2 of the nonmagnetic member 70 .

That is, the distance from the induction heating apparatus 60 to the upper and lower dies 20, 40 is made closer to the distance of the nonmagnetic member 70, and heat is applied to the upper and lower dies 20, So that it can be intensively heated.

The upper mold 20 and the lower mold 40 are provided with a cooling passage 80 to cool the upper mold 20 and the lower mold 40 heated by the inflow of cooling water.

Next, a process of manufacturing the sole according to the present embodiment having the above-described configuration will be briefly described.

FIG. 4 is a diagram showing an example of production by a one-time sole unit using an induction system.

Referring to FIG. 4A, after the outsole B, which is a rubber outsole or a synthetic rubber outsole, is molded, the hot melt film is adhered to the bottom surface of the lower mold 40 by bonding the adhesive surface.

Next, a preform (P, prefoam) in the form of a shoe midsole is formed and inserted into the lower mold, and the rapid high temperature (140 to 180 degrees Celsius) is formed by the pressing and induction heating device 60 of the upper mold 20 Lt; 0 > C) and rapidly cooled for a predetermined crosslinking time (1 minute to 3 minutes).

Then, the preform P is joined to the outsole B during the midsole molding to be simultaneously molded.

Meanwhile, a coolant may be introduced into the cooling passage 80, and a coolant member, which is a metal having a high thermal conductivity, may be inserted into the cooling passage member instead of the coolant. The cooling passage 80 is connected to the cooling device 90 (FIG. 1), and can circulate and supply the coolant to the cooling passage.

As described above, it can be seen that the present invention provides a device for simultaneous molding and manufacturing a shoe part using an induction heating device as a basic technical idea. Within the scope of the basic idea of the present invention, Of course, many other variations are possible for those of ordinary skill in the art.

10: upper press 20: upper mold
30: Lower press 40: Lower mold
50: BMC plate 51: receiving groove
52: upper BMC plate 54: lower BMC plate
60: induction heating device 70: nonmagnetic member
80: cooling channel 90: cooling device
P: Preform B: Outsole

Claims (5)

A shoe molding apparatus for forming an upper mold (20) on an upper press (10) and a lower mold (40) on a lower press (30)
A BMC (Bulk Molding Compound) plate 50 is installed on the upper mold 20 and the upper surface, and on the lower surface of the lower mold 40,
In the BMC plate, the upper mold 20 and the lower mold 40 can be heated by an electromagnetic field, which is installed in the induction heating apparatus 60,
The upper mold 20 and the lower mold 40 are formed of a magnetic material and are formed between the upper press 10 and the upper mold 20 and between the lower press 30 and the lower mold 40 A nonmagnetic member 70 is provided to prevent heat conduction to the upper and lower presses 10 and 30 and to guide the upper mold 20 and the lower mold 40 to be rapidly heated The apparatus for simultaneous molding and forming shoe parts using the induction heating device. The method according to claim 1,
Wherein the upper mold or the lower mold is formed in a shape corresponding to each other and formed to have the same thickness t1 and is formed to be relatively thinner than the thickness t2 of the nonmagnetic member. Simultaneous molding production equipment. The method according to claim 1,
Wherein a cooling passage (80) is formed in the upper mold (20) and the lower mold (40) to be connected to the cooling device (90) and cooled by inflow of cooling water. Simultaneous molding production equipment. The method according to claim 1,
In the BMC plate 50,
A receiving groove 51 in which the induction heating device 60 is installed is formed,
The receiving groove (51)
Wherein the shoe member is formed in a zigzag shape. 5. The method of claim 4,
The BMC plate (50)
Wherein the upper BMC plate (52) and the lower BMC (54) plate are integrally joined to each other, and the receiving groove is formed in the upper BMC plate or the lower BMC plate adjacent to the upper mold or the lower mold. A device for simultaneous molding and forming of shoe parts using.

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