KR101096530B1 - Rubber Crosslinking Device with Multilevel of Infrared Ray and Rubber Crosslinking Method - Google Patents

Abstract

The present invention relates to a rubber cross-linking device and a rubber cross-linking method through a multi-step infrared heating, and more particularly, by cross-linking the rubber by infrared rays according to the temperature step by step, the temperature change in the cross-linking device to a large amount of rubber fast time It can be effectively crosslinked inside, and the efficiency is increased, and the surface of the rubber extruded from the extruder is first hardened by one step of the first heating furnace, so that no scratches or marks such as scratches do not appear on the outside even when the rubber is in contact with the conveying unit. By increasing the completeness of, by infrared heat energy penetrates deeply into the rubber by using infrared rays, energy efficiency is increased by preventing energy waste such as large energy applied and thermal energy emitted to the outside when crosslinking by conventional hot air, accordingly There is a feature that the production cost is reduced.

Infrared, crosslinking, curing, rubber, hot air, heating furnace, extruder

Description

Rubber crosslinking device with multilevel of infrared ray and rubber crosslinking method

The present invention relates to a rubber cross-linking device and a rubber cross-linking method through a multi-step infrared heating, more specifically, by cross-linking the rubber by infrared light according to the temperature step by step, the temperature change in the cross-linking device to a large amount of rubber fast time It can be effectively crosslinked inside, and the efficiency is increased, and the surface of the rubber extruded from the extruder is first hardened by one step of the first heating furnace, so that no scratches or marks such as scratches do not appear on the outside even when the rubber is in contact with the conveying unit. By increasing the completeness of, by infrared heat energy penetrates deeply into the rubber by using infrared rays, energy efficiency is increased by preventing energy waste such as large energy applied and thermal energy emitted to the outside when crosslinking by conventional hot air, accordingly Rubber bridges through multi-stage infrared heating to reduce manufacturing costs Tooth and rubber crosslinking method.

Rubber becomes elastic through a process of crosslinking polymers. Although uncrosslinked polymers are often liquid, they are usually highly viscous gums or hard plastics, and many functional reinforcing agents are added to form uncrosslinked rubber compounds and crosslinked to form rubbers with elasticity.

Rubber products are molded by means of pressure press, injection, extrusion, etc. according to the shape. Generally, crosslinking is necessary because a crosslinking agent contained in the rubber compound causes a crosslinking reaction upon heating. Since the press or injection is heated in a conductive manner in the mold of the heated metal material, the heating rate is not a big problem. However, the rubber products that are molded by extrusion method are pushed through die (die type). In order to be heated by conductive means in mold, the mold length needs to be long. Only the shape at, and heating for crosslinking should be made separately. Although oil or water can be used as a heat transfer medium, water cannot be heated above 100 ° C., and oil is rarely used because it has a problem of infiltrating rubber and contaminating a surface.

Therefore, most of them are crosslinked by heat while passing through a long chamber using hot air. However, since the thermal conductivity of the rubber material is very low, a very long heating chamber is required, and there are many problems such as the degree of crosslinking between the surface and the inside or the surface part being excessively exposed to high temperature and deteriorating.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

By crosslinking the rubber with infrared rays according to the temperature step by step, it is possible to effectively crosslink a large amount of rubber in a short time by changing the temperature in the crosslinking device. The purpose is to provide.

In addition, the present invention first hardens the surface of the rubber extruded from the extruder through the first heating step of the first heating furnace so that the scratches and marks such as scratches do not appear on the outside even when the rubber is in contact with the conveying unit, thereby improving the completeness of the rubber product. Another object of the present invention is to provide a rubber crosslinking device and a rubber crosslinking method through multi-step infrared heating.

In addition, in the present invention, by injecting and cross-linking the thermal energy deeply into the rubber using infrared rays, energy efficiency is increased by preventing energy waste such as large energy applied and thermal energy emitted to the outside when crosslinking by conventional hot air, accordingly Another object of the present invention is to provide a rubber crosslinking device and a rubber crosslinking method through multi-step infrared heating, which reduces manufacturing costs.

In order to achieve the above object, the present invention provides a device for crosslinking rubber,

A first heating furnace for curing only the outer surface of the rubber extruded through the extruder by high power mid-infrared;

A second heating furnace for curing the rubber to the inside by the high power far infrared rays on the extension line with the first heating furnace;

A third heating furnace for completely curing the rubber by far infrared rays on the extension line with the second heating furnace;

It relates to a rubber cross-linking device through a multi-stage infrared heating, characterized in that it comprises a; the transfer unit is formed in the second heating furnace and the third heating furnace to transfer the rubber to one side.

In addition, the present invention in the rubber crosslinking method of the rubber cross-linking device through a multi-step infrared heating,

Rubber extruded through the extruder flows into the first heating furnace first heating step (S100) for curing only the outer surface by the high power mid-infrared;

After the first step (S100), the rubber is transferred to the second heating furnace through the conveying unit for the second heating step (S200) to gradually cure the inside by the high power far infrared;

After the second step (S200), the rubber is transferred to the third heating furnace through the transfer unit third heating step (S300) for completely curing the interior by far infrared rays; comprising a multi-stage infrared heating It relates to a rubber crosslinking method of the rubber crosslinking device.

As described above, the rubber cross-linking device and the rubber cross-linking method of the multi-stage infrared heating of the present invention by cross-linking the rubber by the infrared rays according to the temperature step by step, the temperature change in the cross-linking device to achieve a large amount of rubber It can be effectively crosslinked in time, there is an effect that efficiency is increased.

In addition, the present invention hardens the surface of the rubber extruded from the extruder through the first stage of the first heating furnace, even if the rubber is in contact with the conveying portion does not appear scratches and marks such as scratches on the outside has the effect of increasing the degree of completion of the rubber product have.

In addition, in the present invention, by injecting and cross-linking the thermal energy deeply into the rubber using infrared rays, energy efficiency is increased by preventing energy waste such as large energy applied and thermal energy emitted to the outside when crosslinking by conventional hot air, accordingly The production cost is reduced.

The present invention has the following features to achieve the above object.

In the device for crosslinking the rubber,

A first heating furnace for curing only the outer surface of the rubber extruded through the extruder by high power mid-infrared;

A second heating furnace for curing the rubber to the inside by the high power far infrared rays on the extension line with the first heating furnace;

A third heating furnace for completely curing the rubber by far infrared rays on the extension line with the second heating furnace;

And a conveying part formed inside the second heating furnace and the third heating furnace to transfer rubber to one side.

In addition, in the rubber crosslinking method of the rubber crosslinking apparatus through the multi-step infrared heating of the present invention,

Rubber extruded through the extruder flows into the first heating furnace first heating step (S100) for curing only the outer surface by the high power mid-infrared;

After the first step (S100), the rubber is transferred to the second heating furnace through the conveying unit for the second heating step (S200) to gradually cure the inside by the high power far infrared;

After the second step (S200), the rubber is transferred to the third heating furnace through the transfer unit third heating step (S300) for completely curing the interior by far infrared rays; characterized in that it comprises a.

The present invention having such characteristics can be more clearly described by the preferred embodiments thereof.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be water and variations.

1 is a cross-sectional view showing a rubber crosslinking apparatus according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a portion AA of Figure 1, Figure 3 is a perspective view showing a conveying unit according to an embodiment of the present invention, Figure 4 to 6 is a flow chart showing the operation of the rubber cross-linking device according to an embodiment of the present invention.

As shown in Figure 1 to 6, the rubber cross-linking device 100 of the multi-stage infrared heating of the present invention is formed in a cylindrical shape as a whole, the first heating furnace 10, the second heating furnace 20 and the first It consists of three heating furnaces 30 and a transfer part 40.

The first heating furnace 10 is a device for curing the outer surface of the rubber (90) extruded through the extruder (1) only by the high-power mid-infrared (with the same meaning as crosslinking), referring to FIG. A mid-infrared lamp (not shown) is installed inside the first heating furnace 10 so that the mid-infrared light is emitted, and only the outer surface of the rubber 90 is cured by the radiant heat of the mid-infrared lamp so that the rubber 90 is transferred. Prevents scratches, etc. on the outer periphery when in contact with 40.

Here, a nozzle (outlet for discharging rubber) of the extruder 1 is provided at the inlet side of the first heating furnace 10, that is, the portion where the rubber 90 flows, and the rubber 90 discharged from the nozzle is formed. 1 is transferred to the inside of the furnace 10. At this time, referring to Figures 4 to 6, the discharged rubber 90 is stretched long while being transported to one side without any cradle in the inner air of the first heating furnace 10 by the high power mid-infrared (90) Surface hardening without any scratches on the outer periphery. Therefore, the length of the first heating furnace 10 is formed to about 1M.

And, the first heating furnace 10 is a heater temperature to be transmitted to the rubber 90, that is, the temperature of the heat generated from the mid-infrared lamp is 900 ~ 1300 ℃, in the present invention is set to 1100 ℃, the first heating furnace ( 10) the internal ambient temperature of 500 ~ 900 ℃ is maintained at 700 ℃ in the present invention is to cure only the outer periphery of the rubber.

In addition, the inside of the first heating furnace 10 is composed of a mid-infrared lamp.

The second heating furnace 20 is formed in a line extending in the longitudinal direction with the first heating furnace 10 to cure the rubber 90 passing through the first heating furnace 10 to the inside of the rubber by high power far infrared rays As a device to make, with reference to Figure 2, from the inner side of the second heating furnace 20, the infrared radiation coating material 50, the heating element 60, the heat insulating material 70 in a one-piece configuration, the heat insulating material 70 Induction coils 80 that generate far infrared rays in the longitudinal direction are laid on the outside.

Here, the magnetic force line is generated in the induction coil (80). The magnetic force line is transmitted to the heating element 60 without being disturbed by the heat insulator 70, and when the heating element 60 generates heat due to the magnetic force line, the infrared radiation coating material 50 emits far infrared rays and the heat is rubber. The rubber 90 is crosslinked by penetrating the inner depth of the 90.

And, the second heating furnace 20 is a heater temperature to be transmitted to the rubber, that is, the temperature of the heat generated in the far infrared of the induction coil 80 is 400 ~ 600 ℃, in the present invention is set to 500 ℃, the first heating furnace Although the internal ambient temperature (room temperature) of (10) is 200-400 degreeC, in this invention, it is maintained at 300 degreeC and hardens to the inside of rubber | gum. At this time, the length of the second heating furnace 20 is formed of 5 ~ 10M.

The third heating furnace 30 is formed in a longitudinal extension line with the second heating furnace 20 to completely cure the rubber 90 passed through the third heating furnace 30 by the far infrared inside 2, the infrared radiation coating material 50, the heating element 60, and the heat insulating material 70 are integrally formed from the inside of the third heating furnace 30, and the outside of the heat insulating material 70. An induction coil 80 for generating far infrared rays in the longitudinal direction is laid.

Here, the magnetic force line is generated in the induction coil (80). The lines of magnetic force are transmitted to the heating element 60 without being disturbed by the heat insulator 70, and when the heating element 60 generates heat due to the lines of magnetic force, the infrared radiation coating material 50 emits far infrared rays and the heat is released. The rubber 90 penetrates into the inner depth of the rubber 90 to crosslink.

And, the third heating furnace 30 is a heater temperature to be transmitted to the rubber, that is, the temperature of the heat generated in the far infrared of the induction coil 80 is 200 ~ 400 ℃, in the present invention is set to 300 ℃, the first heating furnace Although the internal ambient temperature (room temperature) of (10) is 180-250 degreeC, in this invention, it is maintained at 230 degreeC and hardens to the inside of rubber | gum. At this time, the length of the second heating furnace 20 is formed to be about 20M long.

In addition, in the third heating furnace 30, the rubber 90 transferred through the transfer part 40 is zigzag in the longitudinal direction from the inside of the third heating furnace 30 to completely cure to the inside of the rubber. At this time, the rubber 90 is further provided with a guide member (not shown) capable of guiding the rubber 90 to be transferred in a zigzag, the interior of the third heating furnace (30).

Here, the guide member is a plurality of guides are installed in a stack so that the rubber 90 can stay in the zigzag for a long time in the third heating furnace 30 to completely cure to the inside of the rubber (90).

The transfer part 40 is formed in the second heating furnace 20 and the third heating furnace 30 with reference to FIG. 3 to transfer the rubber 90 to one side, and to the fixing member 42. Is installed by the belt 41 is formed to convey the rubber 90 to one side.

In this case, the belt 41 has a plurality of through-holes 43 are formed in a mesh net form so that far infrared rays are transmitted to the rubber 90 through the lower end portion.

In addition, since the belt 41 is driven by a motor (not shown) and a gear formed on the outside thereof, a detailed description thereof is not made.

The temperature of the heat of the first, second, third heating furnaces 10, 20, 30 described above may be changed at any time according to the material, size, and situation of the rubber 90.

The induction coil 80 described above may be used as the induction coil 80 by selecting one of a flat coil or a circular coil, and having a spiral shape toward the center and also having various shapes such as an oval or a circular or a square. Can be formed.

The rubber crosslinking method for the rubber crosslinking device 100 through the multi-step infrared heating described above will be described in detail below.

7 is a flow chart showing a rubber cross-linking method of the rubber cross-linking apparatus according to an embodiment of the present invention. As shown in Figure 7, the rubber cross-linking method of the rubber cross-linking device 100 through the multi-stage infrared heating of the present invention, first, put the rubber raw material in the extruder 1 to melt the rubber raw material by heat of about 80 ℃, The rubber 90 is extruded through the nozzle of the extruder 1.

In addition, the rubber 90 extruded through the nozzle of the extruder 1 is extruded and introduced into the interior of the first heating furnace 10, and the rubber 90 by the high power mid-infrared ray in the first heating furnace 10. Hardening only the outer surface of (S100).

Here, the first infrared heater 10 is installed with a mid-infrared lamp to generate radiant heat of high-power mid-infrared rays, the heater temperature is set to about 900 ~ 1300 ℃ to cure only the outer surface of the rubber 90, the first 1 The internal atmosphere temperature of the heating furnace 10 is set to about 500 to 900 ° C. to crosslink the rubber.

Then, the rubber 90 passing through the first heating furnace 10 is transferred into the second heating furnace 20 through the transfer part 40 to gradually harden the interior by the high power far infrared ray (S200). The induction coil 80 is installed in the second heating furnace 20 to generate heat of high power far infrared rays, and the heater temperature is set to about 400 to 600 ° C. to gradually cure the inside of the rubber 90, and the second The internal atmosphere temperature of the heating furnace 20 is set to about 200 to 400 ° C to crosslink the rubber.

Finally, the rubber 90 passing through the second heating furnace 20 is transferred to the third heating furnace 30 through the transfer part 40 to completely harden the inside of the rubber by far infrared rays (S300). In addition, the induction coil 80 is installed in the third heating furnace 30 so as to generate far-infrared heat, and the heater temperature is set to about 200 to 400 ° C. to completely cure the inside of the rubber 90, and the third The internal atmosphere temperature of the heating furnace 30 is set to about 180 to 250 ° C. to crosslink the rubber.

However, when the rubber is finished in the third heating furnace 30, since the length of the third heating furnace 30 is limited, the rubber to be transferred is zigzag from the inside to be used for a long time in the third heating furnace 30. Allow time to stay.

1 is a cross-sectional view showing a rubber crosslinking apparatus according to an embodiment of the present invention,

2 is a cross-sectional view showing part A-A of FIG. 1,

3 is a perspective view showing a transfer unit according to an embodiment of the present invention,

4 to 6 is a flow chart showing the operation of the rubber cross-linking device according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: first heating furnace 20: second heating furnace

30: third heating furnace 40: transfer unit

41: belt 42: fixing member

43: through hole 50: spinning coating material

60: heating element 70: heat insulating material

80: guide coil 90: rubber

100: rubber crosslinking device

Claims (13)

In the device 100 for crosslinking rubber, A first heating furnace (10) for curing only the outer surface of the rubber (90) extruded through the extruder (1) by high power mid-infrared; A second heating furnace (20) for curing the rubber (90) to the inside by high power far infrared rays in an extension line with the first heating furnace (10); A third heating furnace (30) for completely curing the rubber (90) by far infrared rays in an extension line with the second heating furnace (20); And a conveying part 40 formed inside the second heating furnace 20 and the third heating furnace 30 to convey the rubber 90 to one side. Rubber cross-linking device through a multi-stage infrared heating, characterized in that the first infrared heater is installed in order to cure only the outer surface of the rubber 90 by radiant heat. The method of claim 1, The transfer part 40 is installed by the fixing member 42 in the second heating furnace 20 and the third heating furnace 30, and the belt 41 to convey the rubber 90 to one side. Is formed, the belt 41 is a rubber cross-linking device through a multi-stage infrared heating, characterized in that a plurality of through-holes 43 are formed so that far infrared rays are transmitted to the rubber 90 through the lower end. The method of claim 1, The first heating furnace 10 has a heater temperature to be delivered to the rubber 90 is 900 ~ 1300 ℃, the internal atmosphere temperature is 500 ~ 900 ℃ rubber cross-linking device through a multi-stage infrared heating. The method of claim 1, The second heating furnace 20 has a heater temperature to be transmitted to the rubber 90 is 400 ~ 600 ℃, the internal atmosphere temperature is 200 ~ 400 ℃ rubber cross-linking device through the infrared heating, characterized in that. The method of claim 1, The third heating furnace 30 has a heater temperature to be transmitted to the rubber (90) is 200 ~ 400 ℃, the internal atmosphere temperature is 180 ~ 250 ℃ rubber cross-linking device through a multi-stage infrared heating. The method of claim 1, The second heating furnace 20 and the third heating furnace 30 are integrally formed in the order of the infrared radiation coating material 50, the heating element 60, the heat insulating material 70 from the inside, the outer side of the heat insulating material 70 Rubber cross-linking device through a multi-stage infrared heating, characterized in that the induction coil 80 is laid in the longitudinal direction. The method of claim 6, The magnetic force lines generated by the induction coil 80 are transmitted by the magnetic force lines to the heating element 60 without being disturbed by the heat insulator 70, and when the heating element 60 generates heat due to the magnetic force lines, the infrared radiation coating material 50. Rubber cross-linking device through a multi-stage infrared heating characterized in that the heat is penetrated into the inner depth of the rubber (90) while emitting far infrared rays. The method of claim 1, In the third heating furnace (30) is a rubber cross-linking device through a multi-stage infrared heating, characterized in that the rubber 90 is conveyed in a longitudinal direction in the longitudinal direction to be completely cured to the inside of the rubber (90). In the rubber crosslinking method of the rubber crosslinking device 100 through a multi-step infrared heating, A first heating step (S100) in which the rubber (90) extruded through the extruder (1) flows into the first heating furnace (10) to cure only the outer surface by high-power mid-infrared rays; After the first step (S100), the rubber (90) is transferred to the second heating furnace 20 through the transfer unit 40, the second heating step (S200) to gradually cure the inside by the high power far infrared; After the second step (S200), the rubber 90 is transferred to the third heating furnace 30 through the transfer unit 40, the third heating step (S300) for completely curing the interior by the far infrared; under, In the third heating step (S300), the induction coil 80 is installed so that heat of far infrared rays is generated, and the heater temperature is 200 to 400 ° C. in order to completely cure the inside of the rubber 90. Rubber cross-linking method of the rubber cross-linking device through a multi-stage infrared heating, characterized in that to cross the rubber 90 by setting the internal ambient temperature of 30) to 180 ~ 250 ℃. The method of claim 9, wherein in the first heating step (S100), A mid-infrared lamp is installed to generate radiant heat of high-power mid-infrared light, and the heater temperature is 900 to 1300 ° C. to cure only the outer surface of the rubber 90, and the internal ambient temperature of the first heating furnace 10 is 500 to 1. Rubber cross-linking method of the rubber cross-linking device through a multi-step infrared heating, characterized in that the cross-linking the rubber 90 by setting to 900 ℃. The method of claim 9, wherein in the second heating step (S200), An induction coil 80 is installed to generate heat of high power far infrared rays, and the heater temperature is 400 to 600 ° C. in order to gradually cure the inside of the rubber 90. Rubber cross-linking method of the rubber cross-linking device through a multi-step infrared heating, characterized in that the cross-linking of the rubber 90 by setting to 400 ℃. delete delete

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