KR101829636B1 - Apparatus for heating material - Google Patents

Abstract

A material heating apparatus according to the present invention includes: a device housing configured to pass a material; Transfer means for loading and unloading a material into the apparatus housing; And heating means provided in the apparatus housing and configured to uniformly heat the material charged in the apparatus housing at a high frequency.

Description

[0001] APPARATUS FOR HEATING MATERIAL [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material heating apparatus, and more particularly, to a material heating apparatus for subjecting a material to heat treatment for strength reinforcement.

1 is a view showing a molding apparatus including a workpiece heating apparatus according to the prior art.

Referring to the drawing, a blank blank 1 made of boron steel is cut out from the uncoiler 11, cut into a predetermined size in a material cutting unit 12, and then cut into a LNG gas heating furnace or electricity After heating at 950 占 폚 or more in the heating furnace 13, hot stamping is performed in the stamping unit 14 and then the edges are laser cut to the correct product dimensions in the final cutting unit 15 Thus, the final product is produced.

At this time, since the LNG gas heating furnace uses the heat of combustion of the LNG gas and the electric heating furnace uses the resistance heat of the electric heating to heat the material steel sheet, the strength is not uniform even though it is not very high strength, There is a problem that it is excessively consumed.

Further, in the LNG gas heating furnace and the electric heating furnace, the heating time of the material is also as long as about 10 minutes, so that the productivity of the product is lowered.

In the LNG gas heating furnace and the electric heating furnace, since the material is heated in the process of being conveyed by the conveyor disposed therein, the size of the heating furnace itself is designed so that the material is sufficiently heated, .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides a material heating apparatus which produces a product having a high strength and a high strength while reducing the cost of consumed energy, shortening the heating time, The purpose is to do.

According to an aspect of the present invention, there is provided a material heating apparatus including: a device housing configured to pass a material; Transfer means for loading and unloading a material into the apparatus housing; And heating means provided in the apparatus housing and configured to uniformly heat the material charged in the apparatus housing at a high frequency.

Here, the heating means may include: a core member having a through hole through which the material passes in the apparatus housing; And a work coil disposed around the core member to generate a high frequency wave.

The heating means may further include a filling material of an insulating material filled in a peripheral space of the core member in the apparatus housing.

At this time, the filling material may be made of a ceramic material.

The heating means may further include a support member for supporting the core member to prevent deformation of the core member while connecting the device housing and the core member in the device housing.

Further, the work coil may be a pipe member through which cooling water flows.

In addition, the core member may be made of a carbon material or an inconel material.

The charging device may further include charging and discharging grooves formed on the bottom surface of the through hole of the core member in the conveying direction of the material, Moving transfer bar; And a take-out transfer bar for supporting the material placed thereon and reciprocating the outside of the outlet of the apparatus housing and the take-out groove.

In addition, when the material transfer bar is loaded in the apparatus housing, the take-out transfer bar moves to a state higher than the upper surface of the core member when taken out from the apparatus housing, It can be transversely and longitudinally moved so as to move to a low state.

In addition, each of the loading / unloading bar and the taking-out transfer bar may be formed with a front end portion of the material placed on the upper surface and a stopping protrusion to which the rear end portion is hooked.

At this time, the latching jaw may be fastened to the loading transfer bar or the take-out transfer bar in a movable clamping structure so that the transferring bar or the take-out transfer bar can be moved and fixed in the longitudinal direction thereof.

In addition, an opening and closing door may be mounted on each of the inlet and the outlet of the apparatus housing.

The apparatus housing is provided with a sensor hole communicating with the through-hole to communicate with the through-hole. A sensor hole is provided in the sensor hole, and a temperature for measuring the temperature of the material heated by the heating means and a temperature inside the apparatus housing sensor; And control means connected to the temperature sensor and the work coil for controlling the high frequency and the cooling of the work coil using data of the temperature measured by the temperature sensor as data.

At this time, a plurality of the temperature sensors may be uniformly arranged over the entire device housing.

Further, the control means may include: a control executing portion, connected to the work coil, for controlling the high frequency output of the work coil and the temperature of the cooling water in the work coil; And a main controller connected to the temperature sensor and the control executing unit to control the control executing unit using the temperature measurement value by the temperature sensor as data.

The material heating apparatus according to the present invention is constituted by the heating means for uniformly heating the material while high-frequency heating, thereby making it possible to reduce the cost of consumed energy while manufacturing a product having an extremely high strength and uniform strength, It is remarkably shortened and the installation space of the apparatus is greatly reduced, so that the productivity can be increased.

1 is a view showing a molding apparatus including a workpiece heating apparatus according to the prior art.
2 is a view showing a molding equipment including a material heating apparatus of the present invention.
3 is a schematic view showing the workpiece heating apparatus of Fig.
4 is a perspective view showing the workpiece heating apparatus of FIG.
5 is a longitudinal sectional view showing the inside of the apparatus housing in the workpiece heating apparatus of FIG.
FIG. 6 is a view illustrating a process in which material is charged into the apparatus housing and heated and then taken out in the material heating apparatus of FIG. 4;
FIG. 7 is a view showing the movement of the stopping jaws in the loading and unloading bars in the workpiece heating apparatus of FIG. 6;
8 is a view showing that the heating means is controlled by the temperature sensor and the control means in the material heating apparatus of Fig.

Hereinafter, exemplary embodiments of the present invention will be described in detail. In the drawings, like reference numerals are used to refer to like elements throughout the drawings, even if they are shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 2 is a view showing a molding apparatus including a material heating apparatus of the present invention, FIG. 3 is a schematic view showing the material heating apparatus of FIG. 2, and FIG. 4 is a perspective view showing the material heating apparatus of FIG.

FIG. 5 is a longitudinal sectional view showing the inside of the apparatus housing in the workpiece heating apparatus of FIG. 4, and FIG. 6 is a view illustrating a process of filling the workpiece into the apparatus housing and being heated and taken out in the workpiece heating apparatus of FIG.

Referring to the drawings, the workpiece heating apparatus H of the present invention includes an apparatus housing 10, a conveying means, and a heating means.

Here, the apparatus housing 10 is configured to allow the work 1 to pass therethrough, and an inlet through which the work 1 is loaded is formed, and an outlet through which the drawn work 1 is discharged is formed.

At this time, the opening and closing door 11 can be mounted on each of the entrance and the exit of the apparatus housing 10. This opening and closing door 11 can open and close the inlet or the outlet of the apparatus housing 10 by reciprocating vertically by the cylinder 12 so that the material 1 is charged into the apparatus housing 10, The opening and closing door 11 is opened when the work 1 is discharged from the apparatus housing 10 and when the work 1 is heated by the heating means in the apparatus housing 10, And the outlet is shut off, heat exchange effect with the outside is blocked, so that the heating effect on the material 1 can be enhanced.

The heating means is provided in the apparatus housing 10 and is configured to uniformly heat the material 1 loaded in the apparatus housing 10 at a high frequency.

Specifically, the heating means includes a core member 31 having a through-hole 31a through which the material 1 passes in the apparatus housing 10, and a core member 31 disposed around the core member 31 to generate a high- A work coil 32 may be provided.

Here, the work coil 32 is disposed around the core member 31 to generate a high frequency wave.

For reference, high-frequency heating is a method of placing an object in a strong electromagnetic field and heating it. When a metal is placed in a coil through which a high-frequency current flows, an electromagnetic induction action between the metals induces a magnetic field in a direction canceling the magnetic field generated by the coil An eddy current is generated. By this current, heat is generated and the temperature rises.

When the work coil 32 generates high frequency for high-frequency heating in this way, the material 1 staying in the through hole 31a of the inner core member 31 is heated quickly.

The core member 31 is also heated by a high frequency and has a shape that wraps around the whole portion of the work 1 disposed in the through hole 31a so that the work 1 is not heated unevenly, Lt; RTI ID = 0.0 > uniformly < / RTI >

That is, the work coils 32 are arranged in a zigzag shape or concentrically arranged. The material 1 subjected to high-frequency heating by the work coils 32 is heated unevenly, Or the strength is unevenly formed in the subsequently cured material 1. This problem is solved by the core member 31.

By the material heating apparatus H of the present invention having the above-described structure, the work 1 is heated by high-frequency heating by the workpiece coil 32 and indirectly heated uniformly by the core member 31, It is possible to reduce the energy cost while producing ultra high strength and uniform strength products. (Substantially high strength and uniform strength of 1.5GPa or more is produced on site.)

In addition, the material heating apparatus H of the present invention shortens the heating time of the work 1, so that the heat treatment of the work 1 can be performed in a short time and productivity can be increased. (In fact, (The time to reach a high temperature of 900 DEG C or more) of the fuel cell 1 is reduced from about 10 minutes to about 1 minute)

Further, as shown in FIG. 2, only a smaller installation space is required, and as a result, a large number of workpiece heating apparatuses H can be installed, thereby improving productivity. (In actual practice, The installation space of 20m ~ 40m in length is reduced to 2m in width and 4m in length)

Reference numeral 11 in Fig. 2 denotes an uncoiler, 12 a material cutting unit, 14 a stamping unit, and 15 a final cutting unit.

The heating means may further include a filling material 33 of insulating material filled in the peripheral space of the core member 31 in the apparatus housing 10.

Since the filler 33 is made of an insulating material, it is possible to prevent a shot due to the contact of the workpiece 32 with the workpiece 1, and the heat of the high temperature generated by the workpiece coil 32 is transferred to the outside As much as possible.

The filler 33 may be made of a ceramic material, and the present invention is not limited thereto and any filler having any insulating properties may be used.

In addition, the heating means may further include a support member 34 for connecting the apparatus housing 10 and the core member 31 in the apparatus housing 10.

The support member 34 serves to block deformation of the core member 31 by supporting the core member 31 on the basis of the apparatus housing 10. Specifically, as shown in the figure, a plurality of support members 34 are spaced apart at regular intervals to support the entire portion of the core member 31, thereby preventing the core member 31 from being thermally deformed or stuck thereby .

In addition, since the work coil 32 has a tubular shape in which the cooling water flows inside, the cooling water is continuously cooled by the cooling water, so that the temperature of the work coil 32 due to the heating by the core member 31 It is possible to prevent cracks and breakage from occurring.

The core member 31 is made of a carbon material or an inconel material having excellent heat resistance, so that the core member 31 can be prevented from being deformed or damaged even when the temperature rises due to high frequency heating. As an example, the core member 31 may be made of a carbon material having heat resistance of 1600 占 폚 or more.

On the other hand, the conveying means is configured to load and unload the work 1 in the apparatus housing 10.

A loading groove 31b and a takeout groove 31c are formed in the bottom surface of the through hole 31a of the core member 31 in the direction of transporting the work 1. In this case, A loading transfer bar 21 and a take-out transfer bar 23 as shown in FIG.

The charging and conveying bar 21 plays a role of supporting the material 1 to be loaded and charging the material 1 into the apparatus housing 10. The charging conveying bar 21 is provided outside the entrance of the apparatus housing 10, And is configured to reciprocate in the loading groove 31b.

The take-out transfer bar 23 supports the material 1 to be seated and takes out the material 1 from the apparatus housing 10. The take-out and transfer bar 23 is disposed outside the outlet of the apparatus housing 10, And the take-out groove 31c.

When the raw material transfer bar 21 is loaded into the apparatus housing 10, the take-out transfer bar 23 moves the core member 31 when the raw material 1 is taken out from the apparatus housing 10, And moves longitudinally so as to move to a state higher than the upper surface of the core member 31 and move to a state lower than the upper surface of the core member 31 in the reverse movement because the material 1 is charged into the apparatus housing 10, So that it is prevented from interfering with the upper surface of the core member 31 and being transported.

It should be noted here that any conventional driving mechanism such as a motor and a cylinder 12 may be utilized as the driving member (not shown) for transversely and longitudinally moving the charging and discharging conveying bar 21 and the taking-out conveying bar 23 Of course.

7, each of the loading and unloading conveying bar 21 and the taking-out transferring bar 23 are provided with hooking projections 22 and 24 for hooking the front and rear ends of the work 1, Respectively.

The catching jaws 22 and 24 are provided in the lengthwise direction of the loading conveying bar 21 or the takeout conveying bar 23 in order to hold the work 1 at a position corresponding to the size of the work 1 The transfer conveying bar 21 or the take-out transfer bar 23 can be fastened with a moving clamping structure so as to be able to move and fix the position along the take-

Although not shown in the drawings, the latching jaws 22 and 24 may be formed in a manner that the elastic jaws 22 and 24 are moved in a state where the elastic jaws 22 and 24 are pressed, And as another embodiment, a bolt passing through the charging conveying bar 21 or the take-out conveying bar 23 may be mounted on the lower portion, or a nut may be mounted on the stud bolt having such an arranging structure, It is possible to adopt a structure in which the nut can be moved when the fastening is released and the position is fixed when tightened.

8 is a view showing that the heating means is controlled by the temperature sensor and the control means in the material heating apparatus of Fig.

The workpiece heating apparatus H of the present invention further includes a temperature sensor 40 for measuring the temperature of the work 1 and a control means 50 electrically connected to the temperature sensor 40 can do.

A sensor hole extending from the outside is formed in the apparatus housing 10 so as to communicate with the through hole 31a of the core member 31. The temperature sensor 40 may be installed in the sensor hole.

The temperature sensor 40 serves to measure the temperature of the workpiece 1 heated by the heating means and the temperature inside the apparatus housing 10. For example, a laser sensor can be utilized.

Further, as shown in the drawing, the temperature sensor 40 is desirably uniformly disposed in each part of the apparatus housing 10 for uniform heating of the work 1.

The control means 50 is electrically connected to the temperature sensor 40 and the work coil 32 so that the high frequency and the cooling of the work coil 32 can be controlled by using the temperature measurement value by the temperature sensor 40 as data Respectively.

Specifically, the control means 50 is connected to the work coil 32 to control the high frequency output of the work coil 32 and the temperature of the cooling water inside the work coil 32 And a main control unit 52 connected to the temperature sensor 40 and the control execution unit 51 to control the control execution unit 51 with the temperature measurement value by the temperature sensor 40 as data can do.

As a result, as described above, according to the present invention, since the heating means for uniformly heating the raw material 1 while heating the raw material 1 is constituted, it is possible to reduce the cost of consumed energy while manufacturing a product having an extremely high strength and uniform strength, The heating time of the material 1 is remarkably shortened and the installation space of the apparatus is greatly reduced, so that the productivity can be increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

1: Material 11: Uncoiler
12: Material cutting unit 13: Heating furnace
14: Stamping unit 15: Final cutting unit
H: Material heat treatment apparatus 10: Device housing
11: opening / closing door 12: cylinder
21: loading transfer bar 22:
23: take-out transfer bar 24:
31: core member 31a: through hole
31b: Loading groove 31c: Take-out groove
32: work coil 33: filler
34: Support member 40: Temperature sensor
50: control means 51: control execution unit
52:

Claims (15)

A device housing configured to allow material to pass therethrough; Transfer means for loading and unloading a material into the apparatus housing; And heating means provided in the apparatus housing and configured to uniformly heat the material charged in the apparatus housing at a high frequency,
The heating means includes a core member having a through hole through which the material passes in the apparatus housing; And a work coil disposed around the core member to generate a high frequency wave,
Wherein the core member is formed with a charging groove and a discharging groove in the direction of conveyance of the material, and the conveying means supports the deposited material, and reciprocates the outside of the inlet of the apparatus housing and the charging groove Loading transfer bar; And a take-out conveying bar for supporting the placed material, the take-out conveying bar reciprocating between the outside of the outlet of the apparatus housing and the take-out groove.
delete The method according to claim 1,
The heating means,
A filling material of an insulating material filled in a peripheral space of the core member in the apparatus housing;
Further comprising: a heating device for heating the workpiece.
The method of claim 3,
Wherein the filling material is made of a ceramic material.
The method according to claim 1,
The heating means,
A support member for supporting the core member to block the deformation of the core member while connecting the device housing and the core member in the device housing;
Further comprising: a heating device for heating the workpiece.
The method according to claim 1,
Wherein the work coil is a pipe member through which cooling water flows.
The method according to claim 1,
Wherein the core member is made of a carbon material or an inconel material.
delete The method according to claim 1,
Wherein when the material is loaded into the apparatus housing, the take-out transfer bar, when the material is taken out of the apparatus housing,
Wherein the movable member moves transversely and longitudinally so as to move to a state higher than the upper surface of the core member and to move to a state lower than the upper surface of the core member during reverse movement.
The method according to claim 1,
Wherein each of the charging transfer bar and the extracting transfer bar is formed with an engaging step for engaging a front end portion and a rear end portion of the material placed on the upper surface.
11. The method of claim 10,
Characterized in that the catching jaw is fixed to the loading conveying bar or the taking-out conveying bar by a moving clamping structure so that the taking-in conveying bar or the taking-out conveying bar can be moved and fixed in the longitudinal direction thereof. .
The method according to claim 1,
Wherein an opening and closing door is attached to each of an inlet and an outlet of the apparatus housing.
13. The method according to any one of claims 3 to 7 and 9 to 12,
A sensor hole communicating with the through hole is formed in the apparatus housing,
A temperature sensor installed in the sensor hole for measuring a temperature of the material heated by the heating means and a temperature inside the device housing; And
Control means associated with the temperature sensor and the work coil for controlling the high frequency and the cooling of the work coil by using the temperature measurement value by the temperature sensor as data;
Further comprising: a heating device for heating the workpiece.
14. The method of claim 13,
Wherein a plurality of the temperature sensors are uniformly arranged over the entire device housing.
14. The method of claim 13,
Wherein,
A control execution unit connected to the work coil for controlling the high frequency output of the work coil and the temperature of the cooling water in the work coil; And
A main controller connected to the temperature sensor and the control executing unit to control the control executing unit with data of the temperature measured by the temperature sensor as data;
And a heating device for heating the workpiece.

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