KR20210036239A - Urethane Electric Hot Plate Manufacturing Process - Google Patents

Abstract

The present disclosure relates to a urethane electric hot plate manufacturing method. The method includes: an inlet formation process of forming a plurality of holes on one side of a plate-shaped hot plate body; a bending process of bending the edge of the plate-shaped hot plate body; a placement process of placing a heating part generating heat and controlling temperature through the control of a temperature controller by being electrically connected with the temperature controller formed on the outside of the hot plate body, in the hot plate body formed through the bending process; a fixing process of fixing the heating part placed in the hot plate body through the placement process, through an adhesive member; an attachment process of attaching moisture-proof paper to an open side of the hot plate body; a compression process of inserting the hot plate body, to which the moisture-proof paper is attached through the attachment process, into a heating press, and then, compressing and fixing the same; a foaming process of foaming a urethane composition in the hot plate body through the holes of the hot plate body fixed on the heating press, and then, heating the same; and an extraction process of extracting the hot plate body from the heating press after the curing of the urethane composition foamed through the foaming process. Therefore, the present invention is capable of manufacturing a urethane electric hot plate with enhanced thermal-resistance, adhesiveness and thermosetting.

Description

Urethane Electric Hot Plate Manufacturing Process

The disclosed content relates to a method for manufacturing a urethane electric hot plate including a urethane composition inside the electric hot plate.

Unless otherwise indicated herein, the content described in this section is not prior art to the claims of this application, and inclusion in this section is not admitted to be prior art.

In general, in homes and offices, a water supply line is connected to a water supply pipe to purify water once again and use it as drinking water.

Most of the adults in Korea, who have a culture familiar with ondol, prefer the floor rather than the bed during the winter season. Actually.

In the heated bed or on the floor of the room, heat wires and copper plates are embedded inside the frame with an outer shell, and marble or jade is formed on the surface, so the stone panels on the surface are heated by the heat of the heated wires. So, it makes you feel like a good old gooduljang.

However, the heating means used for the heat-transfer-type stone bed or supplement as described above generally uses a coated heater wire, and a bendable heater wire is mounted in a zigzag shape on the top of the insulating material and fixed to a separate heat sink, etc. The upper part is closed by the heater wire, which is known to generate a lot of electromagnetic waves by using the resistance heat of electricity, so it is not only very harmful to the human body, but also a separate blocking means to block the electromagnetic waves must be built-in. There is a problem.

In addition, in the heating wire method as described above, in order to heat the stone panel on the upper surface, it is not only heated to the set temperature after several minutes or tens of minutes have elapsed, but also the heating part is also heated by conduction heat after local heating according to the shape of the heating wire. As a result of this, the power consumption is very severe, and the service life thereof is very short due to reasons such as natural corrosion and corrosion due to resistance heat, which requires frequent repairs and management.

Republic of Korea Utility Model Publication No. 20-0166138 discloses a bed mat of loess clay.

Looking at this, it relates to a bed mat using loess soil, specifically, an aluminum plate or copper plate for insulation and water vein blocking on the bottom of a wooden box, and a power heating wire device, an electric wire protective film, and a loess clay plate fixed with a holder of the loess clay plate. After stacking in order, the box lid is covered and the empty space at the top is about a bed mat filled with urethane.

However, even in the prior art document above, the composition ratio of the urethane composition and each manufacturing process are not disclosed.

1. Korean Patent Publication No. 10-0509096 2. Republic of Korea Utility Model Publication No. 20-0166138

The disclosed content is to manufacture a urethane electric heating plate that prevents the heating wire or heating pipe provided inside the electric heating plate from being damaged by the weight of a person, and lowers the manufacturing cost by making the electric heating plate itself as a copper plate that blocks electromagnetic waves. I want to provide a way.

The disclosed contents include an inlet forming process of forming a plurality of holes in one side of the plate-shaped heating plate body, a bending process of bending the rim of the heating plate body, and the inside of the heating plate body formed through the bending process. Arrangement process of arranging a heating unit that is electrically connected to the formed temperature controller to control heat generation and temperature through the control of the temperature controller, and fixing the heating unit disposed on the heating plate body through the arrangement process through an adhesive member Process, an attachment process of attaching a moisture-proof paper to the open surface of the heating plate body, a compression process in which the heating plate body to which the moisture-proof paper is attached through the attachment process is inserted into a heating press and then compressed and fixed, and the heat fixed to the heating press It includes a foaming process in which the urethane composition is foamed into the inside of the heating plate body through the hole of the plate body and then heated, and a takeout process in which the heating plate body is taken out from the heating press after the urethane composition foamed through the foaming process is cured. It relates to a urethane electric hot plate manufacturing process.

According to a preferred feature of the disclosed content, the heating plate body is characterized in that it is formed of a copper plate or a copper alloy plate.

According to a preferred feature of the disclosed content, the adhesive member in the fixing process is characterized in that the aluminum tape.

According to a preferred feature of the disclosed content, the urethane composition to be foamed in the foaming process includes 100 parts by weight of a main material and 110 parts by weight of a curing material, wherein the main material is 60 to 70 parts by weight of polypropylene glycol, dichloro-1-1 fluoroethane 15 It is characterized in that it is formed including to 20 parts by weight and additives.

According to a preferred feature of the disclosed content, the heating press of the foaming process is characterized in that the heating is driven at a temperature of 65° C. for 6 minutes.

According to a preferred feature of the disclosed content, one surface of the moisture-proof paper is characterized in that it is formed by coating with a vinyl film.

In the method of manufacturing a urethane electric hot plate according to the disclosed contents, the urethane composition includes 100 parts by weight of the main material and 110 parts by weight of the curing material, but the main material is 60 to 70 parts by weight of polypropylene glycol, 15 to 20 parts by weight of dichloro-1-1fluoroethane, and A method of manufacturing a urethane electric heating plate with enhanced heat resistance, adhesiveness and hardenability by fixing and curing at a specific temperature and pressure by attaching moisture-proof paper to the open surface of the heating plate body and fixing it at a specific temperature and pressure. Provides.

1 is a flow chart showing the flow of a process according to an embodiment of the disclosed subject matter.
2 is a perspective view according to a process of the disclosed content.
3 is a perspective view according to a process of the disclosed content.
4 is a perspective view according to a process of the disclosed content.
5 is a perspective view according to a process of the disclosed content.
6 is a perspective view according to a process of the disclosed content.

Advantages and features of the present invention, and a method of achieving them will be apparent with reference to the embodiments described later in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments make the disclosure of the present invention complete, and the general knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to the possessor, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

In describing embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in an embodiment of the present invention, which may vary according to the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout the present specification.

The disclosed content relates to a method of manufacturing an electric hot plate that is placed under a bed or the like to generate heat through control of an electric thermostat.

To this end, as shown in FIG. 2, a plate-shaped heating plate body 100 is included.

The heating plate body 100 may be formed in various forms, but as described above, it is shown in FIG. 2 because the upper surface must be formed flat in order to safely and evenly distribute and support the weight of a person as it is used by being placed on the lower part of the bed. As described above, it is preferable that the upper and lower surfaces are formed in a plate shape formed in a plane.

The material of the heating plate body 100 may be made of a material such as stainless steel (SUS), aluminum, or copper alloy.

However, SUS has a problem that it is difficult for users to use it due to an increase in the weight of the electric heating plate, and in the case of aluminum, there is a problem in that it is easily pressed or crushed by the weight of a person due to weak hardness.

Therefore, it is preferable to be formed of a copper alloy or alloy having high hardness, good durability, good thermal conductivity, and good thermal efficiency.

In addition, since the copper alloy also blocks electromagnetic waves, the same effect can be obtained without a separate electromagnetic wave shielding fabric like a conventional electric heating plate, thereby reducing manufacturing cost.

The heating plate body 100 made of such a copper alloy is completed and produced as an electric heating plate according to a process sequence to be described below.

Inlet molding process (S1) is a process of forming a plurality of holes in one side of the heating plate body (100).

As shown in Figs. 2 and 3, the plate-shaped heating plate body 100 is preferably made of a flat top and bottom and is formed in a rectangular shape in accordance with the shape of the bed frame, and a plurality of holes are on the upper or lower side of the rectangle. Is formed.

These multiple holes become a connection part of the urethane inlet 120 for injecting the urethane composition to be described later into the interior of the heating plate body 100 and the electrical wire to which the temperature controller 220 and the heating unit 200 are connected.

Accordingly, a plurality of holes may be formed to have various shapes, positions, and sizes.

However, in the case of the urethane inlet 120 into which the urethane composition is injected, the center of the upper or lower side of the heating plate body 100 so that the urethane composition is not biased into the interior of the heating plate body 100 in the foaming process (S7). It is preferably formed in.

For example, a wiring hole 110 may be formed at an upper side and a urethane inlet 120 may be formed at the lower side.

An electric wire for electrical connection between the temperature controller 220 provided outside the heating plate body 100 and the heating part 200 disposed inside the heating plate body 100 passes through the wiring hole 110.

The urethane inlet 120 is coupled to a connection pipe of a compression launcher for introducing the urethane composition used in the foaming process into the heating plate body 100.

The shape of the urethane inlet 120 may be formed in a variety of shapes such as circular, rectangular, etc., but in consideration of the point that the connection pipe of the compression launcher is circular, as shown in FIG. 2, the urethane inlet 120 is also formed in a circular shape. It is desirable.

A method of forming a plurality of holes in the heating plate main body 100 may use various processing methods, but it is preferable to use a knitting method having good work efficiency due to a small working time.

Since the punching process is a known technique, detailed descriptions are omitted.

The bending process (S2) is a process of bending the edge of the heating plate body 100 after the punching process has been completed.

The bending process (S2) is to form a space in which the urethane composition foam and the heating unit 200, which will be described later, are placed, and by bending the rim of the heating plate main body 100, the rim forms a wall. Is formed.

The bending angle and the height of the wall may be variously formed depending on the amount of the urethane composition to be foamed and the size of the electric heating plate.

However, considering the characteristics of the electric heating plate that is formed at the bottom to support the load of the person, the shape of the bed frame is generally formed in a rectangular shape, and the ease of coupling the urethane inlet 120 and the connection part of the electric wire, the wall It is preferable that one side of the bar is provided as a flat surface, and the angle at which it is bent is preferably formed at a right angle.

Therefore, as shown in FIG. 3, one surface of the heating plate main body 100 is formed in a plane and the other surface is formed with a space inside, and is opened upward.

In addition, the above-described wiring hole 110 and the urethane inlet 120 are formed at the upper and lower corners, respectively, as shown in FIG. 3.

As shown in FIG. 1, the arrangement process S3 is a process in which the heating unit 200 is disposed on the other surface of the heating plate body 100 in which a space is formed therein through the bending process S2.

The heating unit 200 is electrically connected to a temperature controller 220 formed outside the heating plate body 100 to be operated on/off and temperature setting through the control of the temperature controller 220, such a temperature controller ( The configuration of 220), the electric circuit diagram, etc., and the connection method with the heating unit 200 are known techniques, and detailed descriptions thereof will be omitted.

The heating means of the heating part 200 may be a heating pipe or a heating wire 210.

However, in the case of a heating pipe, it has the advantage of good thermal efficiency due to its high thermal conductivity.However, the heating pipe may be pressed by the weight of a person and crushed, and an accident such as a fire may occur due to a short circuit of the electric wire. As a separate heating device is required, there is a problem in that the manufacturing cost is increased.

Therefore, it is easy to arrange, and a heating wire 210 having less deformation due to pressure is used, but it is preferable that a silicone heating wire 210 having elasticity made of a silicone material on the outer surface is used.

As shown in FIG. 4, the heating wire 210 is placed in a parallel manner in the inner space of the heating plate main body 100 and arranged in a zigzag manner.

In this way, since the heating wire 210 is wired in a zigzag form, the heat generated from the heating wire 210 is evenly transferred to a wide range of the electric heating plate.

1 and 4, the heating wire 210, which is wired in a zigzag to the heating plate body 100, is fixed to the heating plate body 100 through a fixing process (S4).

The heating wire 210 is fixed through an adhesive member or a fixing member. In the case of using a fixing member (fixing bracket, etc.), a number of fixing members must be used, resulting in a high manufacturing cost and a low fixing force due to the service life. have.

Therefore, it is preferable to use an adhesive member that is easy to work and inexpensive.

As the adhesive member, various members such as bonds and tapes may be used, but it is preferable to use an aluminum tape 211 having excellent thermal conductivity, moisture resistance, and adhesive strength.

As shown in FIG. 5, such an aluminum tape 211 may be adhered by wrapping the entire surface of the heating wire 210 arranged in a zigzag or by wrapping one surface of each heating wire 210. It is preferable to wrap around one surface of each of the heating wires 210 in order to increase the bonding fixing power and thermal conductivity by finishing the heating plate body 100 to be adhered to one surface of the heating plate body 100.

As shown in Fig. 1, after the fixing step (S4) is finished, an attaching step (S5) of adhering the moisture-proof paper 300 is performed.

As shown in FIG. 6, the moisture-proof paper 300 covers the open surface of the heating plate body 100 and is preferably formed in a rectangular shape corresponding to the shape of the rectangular heating plate body 100.

The moisture-proof paper 300 removes moisture generated by the temperature difference between the inside and the outside of the heating plate body by heating the heating part 200 formed inside the heating plate body 100, Prevents possible electric leakage accidents.

One surface of the moisture-proof paper 300 is coated with a vinyl film 310.

To explain this in more detail, as shown in FIG. 6, the vinyl film 310 is coated on the open surface of the heating plate body 100, that is, the opposite surface of the surface attached to the upper surface.

Thereby, there is an advantage of facilitating diffusion of the urethane composition into the heating plate body 100 in the interior of the heating plate body 100 by the foaming process (S7) to be described later.

As shown in Fig. 1, after the attaching step (S5) is finished, a pressing step (S6) is performed.

The pressing process (S6) is a process of compressing and fixing the heating plate body 100 to which the moisture-proof paper 300 is attached through the attachment process (S5) after being inserted into a heating press.

The heating press reinforces adhesion by heat and pressure, and the structure and function of the heating press are known techniques, so detailed descriptions thereof will be omitted.

The pressure and temperature applied to the heating plate body 100 by the heating press can be made in various values. Considering the adhesive force of the moisture-proof paper 300 and the shape deformation rate due to heat, the compression pressure ratio is 100kg/cm, and the heating temperature is 65. It is preferably made in °C.

By this pressing process (S6), the moisture-proof paper 300 is strongly adhered to the open surface of the heating plate main body 100.

As shown in Fig. 1, after the pressing step (S6), a foaming step (S7) is performed.

The foaming process (S7) is a step of injecting the urethane composition into the interior of the heating plate body 100, and one end of the connecting member of the input device located outside is coupled to the urethane inlet 120 of the heating plate body 100 and injected. .

Since the type of the input device is a known technique, a detailed description will be omitted.

The urethane composition used in the foaming process (S7) is mixed with 60 to 70 in the weight ratio of polypropylene glycol and 15 to 20 in the weight ratio of dichloro-1-1fluoroethane and 100 in the weight ratio of dichloro-1-1 fluoroethane, and the remaining additives.

After the urethane composition injected into the heating plate body 100 is foamed, it is heated with a heating press.

At this time, the temperature to be heated may be of various values, and it is preferable to be heated to 65°C in consideration of the heat resistance and curability of the foamed urethane composition.

It is also preferred to heat for 6 minutes.

As shown in Fig. 1, after the foaming step (S7), a take-out step (S8) is performed.

The take-out step (S8) is a process of taking out the heating plate body 100 from the inside of the heating press to the outside, and it is preferable to take out after the urethane composition foamed inside the heating plate body 100 is cured.

Although preferred embodiments of the present invention have been described with reference to the accompanying drawings, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and represent all the technical ideas of the present invention. Since this is not, it should be understood that there may be various equivalents and modifications that may be substituted for them at the time of application. Therefore, the embodiments described above are to be understood as illustrative and non-limiting in all respects, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and the All changes or modifications derived from the equivalent concept should be construed as being included in the scope of the present invention.

S1: Inlet molding process
S2: Banding process
S3: batch process
S4: Fixing process
S5: Attachment process
S6: Compression process
S7: Foaming process
S8: take-out process
100: heating plate body
110: wiring hole
120: urethane inlet
200: heating part
210: heating wire
220: temperature controller
211: aluminum tape
300: moisture-proof paper
310: vinyl film

Claims (6)

Inlet forming step of forming a plurality of holes in one side of the plate-shaped heating plate body;
A bending process of bending an edge of the heating plate body;
An arrangement process of arranging a heating unit in which heat is generated and a temperature is controlled through the control of the temperature controller by being electrically connected to a temperature controller formed outside of the heating plate body in the inside of the heating plate body formed through the bending process;
A fixing step of fixing the heat generating unit disposed on the heating plate body through an adhesive member through the arranging step;
An attaching step of attaching a moisture-proof paper to the open surface of the heating plate body;
A pressing process of compressing and fixing the heating plate body to which the moisture-proof paper is attached through the attachment process, after being inserted into a heating press;
A foaming step of foaming and heating the urethane composition into the inside of the heating plate body through the hole of the heating plate body fixed to the heating press; And
After the urethane composition foamed through the foaming process is cured, a method of manufacturing a urethane electric hot plate comprising a take-out process of taking the heating plate body out of the heating press. The method of claim 1,
The heating plate body is a method of manufacturing a urethane electric heating plate, characterized in that formed of a copper plate or a copper alloy plate. The method of claim 1,
The method of manufacturing a urethane electric hot plate, wherein the adhesive member in the fixing process is an aluminum tape. The method of claim 1,
The urethane composition to be foamed in the foaming process includes 100 parts by weight of the main material and 110 parts by weight of the curing material,
The main material is a method of manufacturing a urethane electric hot plate, characterized in that it is formed including 60 to 70 parts by weight of polypropylene glycol, 15 to 20 parts by weight of dichloro-1-1fluoroethane, and residual additives. The method of claim 1,
The heating press of the foaming process is a method of manufacturing a urethane electric hot plate, characterized in that the heating is driven for 6 minutes at a temperature of 65 ℃. The method of claim 1,
One surface of the moisture-proof paper is a method of manufacturing a urethane electric hot plate, characterized in that formed by coating with a vinyl film.

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