KR20190055599A - Apparatus for hot press - Google Patents

Abstract

A high temperature compression apparatus according to an embodiment of the present invention comprises: a heating route having an opening into which an object to be shaped is inserted; and a transporting unit transporting the object to be shaped to the inside or the outside of the heating route through the opening. Here, the transporting unit is provided with a plurality of insulation walls moving along with the object to be shaped while covering the opening.

Description

[0001] APPARATUS FOR HOT PRESS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a high-temperature compression apparatus for heating and pressurizing a powder or preform to be mass.

A process of agglomeration or briquetting of powders of iron ores is performed in the process of making iron ores by reducing and melting iron ores.

At this time, there may be differences in quality depending on the state of the powder and the process environment. Therefore, a separate high-temperature compression device is used to inspect the state of the molding according to various powder conditions and process environments.

In the conventional high-temperature compression apparatus, after the heating furnace is heated, the molding is placed in the heating furnace to heat and pressurize the molding. Thereafter, the compacted material is taken out and cooled.

However, such a conventional high-temperature compression apparatus has a disadvantage in that it takes a long time to raise the temperature of the heating furnace and to cool the workpiece, thereby lowering the operating rate. For example, when the workpiece is heated to 650 DEG C, it takes about 50 minutes. It takes 3 to 4 hours to cool the molding at 650 ° C. In addition, in order to perform additional experiments after one experiment, the temperature inside the furnace must be raised from room temperature to the corresponding temperature again.

Therefore, the conventional high-temperature compression apparatus has a problem of a large thermal and temporal loss.

Korean Patent No. 10-1735680

It is an object of the present invention to provide a high-temperature compression apparatus capable of minimizing thermal and temporal losses.

A high-temperature compression apparatus according to an embodiment of the present invention includes a heating furnace having an opening into which an object to be molded is inserted and a transferring portion for transferring the object to be molded into or out of the heating furnace through the opening, And a plurality of heat insulating walls moving together with the object to close the openings.

In the present embodiment, the conveying unit includes a rail disposed along a conveying path of the work, a mold station arranged to move along the rail, and a movable station connected to the mold station, . ≪ / RTI >

In the present embodiment, the mold station may include a mold base which is coupled to the rail so as to be movable and supports the mold in which the molding is accommodated, and the plurality of heat insulation walls respectively disposed on both sides of the mold base.

In the present embodiment, the plurality of heat insulating walls are disposed on one side of the mold pedestal, and when the mold pedestal is completely carried out to the outside of the heating furnace, the first heat insulating wall disposed in the opening of the heating furnace, And a second heat insulating wall disposed on the other side of the mold pedestal and disposed in the opening of the heating furnace to block the opening when the mold pedestal is completely carried into the heating furnace.

In this embodiment, when the mold pedestal is taken out of the heating furnace, it may further include a preliminary chamber for receiving the mold pedestal.

In this embodiment, the movable stage may be one end coupled to the mold station and the other end disposed outside the preliminary chamber.

In this embodiment, it may further include a pressing portion for pressing the molded article in the heating furnace.

In this embodiment, the pressing portion includes a fixed cylinder disposed at a lower portion of the heating furnace and having one end inserted into an insertion groove formed in the mold receiving portion through the heating furnace, a pressurizing cylinder disposed on the upper portion of the heating furnace, And a connecting member having one end connected to the pressurizing cylinder and the other end inserted into the mold through the heating furnace, and the connecting member can press the molding by driving the pressurizing cylinder.

In the present embodiment, the heating furnace has an expansion part formed on the outside and the inside of the opening and extending in an area larger than the opening, and the heat insulating wall is formed in the opening part, As shown in FIG.

The high temperature compression device according to the present invention does not need to cool the heating furnace in the process of removing the new molded product and supplying the powder, and can keep the nitrogen atmosphere inside the heating furnace. Therefore, the experiment can be continuously performed, so that the measurement time can be minimized compared to the conventional method in which the heating furnace must be heated and cooled each time. Therefore, the operating rate of the apparatus can be increased.

1 is a cross-sectional view schematically illustrating a high-temperature compression apparatus according to an embodiment of the present invention;
Fig. 2 is an enlarged cross-sectional view of the conveyance unit shown in Fig. 1. Fig.
3 and 4 are sectional views for explaining the operation of the high-temperature compression apparatus shown in Fig.
5 and 6 are cross-sectional views schematically illustrating a high-temperature compression apparatus according to another embodiment of the present invention.

Prior to the detailed description of the present invention, the terms or words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning, and the inventor may designate his own invention in the best way It should be construed in accordance with the technical idea of the present invention based on the principle that it can be appropriately defined as a concept of a term to describe it. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the elements in the accompanying drawings are exaggerated, omitted, or schematically shown, and the size of each element does not entirely reflect the actual size.

FIG. 1 is a cross-sectional view schematically showing a high-temperature compression apparatus according to an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of the conveyance unit shown in FIG. 3 and 4 are sectional views for explaining the operation of the high-temperature compression apparatus shown in FIG.

1 to 4, the high-temperature compression apparatus 100 according to the present embodiment includes a heating furnace 110, a preliminary chamber 115, a pressurizing section 120, and a transfer section 140.

The heating furnace 110 has a space in which the workpiece P is disposed. In addition, the heating furnace 110 is provided with an opening OP through which the material P is charged into the heating furnace 110 or discharged to the outside.

Although not shown, the heating furnace 110 of this embodiment is provided with a heat source (for example, a heating wire) for heating the heating furnace 110 inside the wall. However, the present invention is not limited thereto, and a heat source may be disposed inside or outside the heating furnace 110 as needed.

In addition, a vacuum device for forming the inside of the heating furnace under vacuum or a gas supplying device for supplying nitrogen into the heating furnace 110 may be provided.

The preliminary chamber 115 is disposed on the opening OP side of the heating furnace 110 and supplies the molded product P to the mold station 150 of the transfer unit 140 to be described later, Be used as space

Accordingly, the preliminary chamber 115 is formed in a space of a size large enough to accommodate the mold station 150 of the transfer unit 140, and has an internal space that is shielded from the outside.

The preliminary chamber 115 also has a door 116 for supplying the workpiece P into the interior of the preliminary chamber 115 or for taking out the preformed workpiece to the outside of the preliminary chamber 115.

The pressing portion 120 is disposed outside the heating furnace 110 and partly flows into the heating furnace 110 to press the workpiece P. [ The pressing portion 120 of the present embodiment includes a pressurizing cylinder 121 and a stationary cylinder 125, and a connecting member 127.

The pressurizing cylinder 121 is disposed on the upper part of the heating furnace 110. The pressurizing cylinder 121 is connected to the connecting member 127 and moves the connecting member 127 in the longitudinal direction.

The connecting member 127 is arranged to penetrate the heating furnace 110 and has one end coupled to the pressurizing cylinder 121 and the other end being inserted into the mold M as the pressurizing cylinder 121 is driven, .

The connecting member 127 may be formed in the form of a pipe or a rod, but is not limited thereto. Also, as shown in Fig. 3, the connecting member 127 can be separated from the heating furnace 110. Fig. The connecting member 127 is separated from the heating furnace 110 and the pressurizing cylinder 121 and the connecting member 127 is connected to the heating furnace 110 and the pressurizing cylinder 121 after the heating is completed, And can be coupled to the pressurizing cylinder 121. In this case, a lid or a cap (111 in FIG. 3) may be coupled to the hole through which the connecting member 127 is inserted in the above-described heating process.

The connecting member 127 also has a receiving projection 128. The support protrusion 128 is vertically protruded in the longitudinal direction of the connecting member 127 and is disposed outside the heating furnace 110 when the connecting member 127 is coupled to the heating furnace 110.

The support protrusion 128 supports the thickness measuring unit 130. Therefore, the support protrusion 128 is disposed below the thickness measuring unit 130 so as to be in contact with the thickness measuring unit 130.

The thickness measuring unit 130 is fixed to the outside of the heating furnace 110 and measures a moving distance of the receiving protrusion 128. [ In the present embodiment, the thickness measuring unit 130 measures the moving distance of the receiving projection 128 through the vernier 132 that presses the receiving projection 128. In this case, the vernier 132 is pressed toward the support protrusion 128 by a constant pressure, and when the support protrusion 128 is lowered, the end of the vernier 132 contacting the support protrusion 128 is also lowered do.

However, the present invention is not limited thereto, and various changes such as measuring a change in distance between the thickness measuring unit 130 and the receiving protrusion 128 using a laser or radio waves are possible.

The fixed cylinder 125 is disposed under the heating furnace 110. The fixed cylinder 125 passes through the heating furnace 110, and one end thereof is disposed in the inner space of the heating furnace 110. Also, one end of the fixed cylinder 125 is inserted into an insertion groove (153 in Fig. 2) formed in a mold pedestal 152 to be described later to inhibit the movement of the mold pedestal 152. [

One end of the fixed cylinder 125 is configured to move in the longitudinal direction of the fixed cylinder 125. Accordingly, when the mold pedestal 152 is fixed, one end of the fixed cylinder 125 is lifted and inserted into the insertion groove 153 of the mold pedestal 152. When the mold pedestal 152 is to be moved, one end of the fixed cylinder 125 descends to be completely separated from the mold pedestal 152.

The fixed cylinder 125 and the pressurizing cylinder 121 may be cylinders operated by hydraulic or pneumatic pressures. The fixed cylinder 125 and the pressurizing cylinder 121 are arranged in a straight line. An object P is disposed between the fixed cylinder 125 and the pressurizing cylinder 121. Therefore, the workpiece P is pressurized by the pressure applied by the fixed cylinder 125 and the pressure cylinder 121, is compression-molded, and is agglomerated.

In addition, the high-temperature compression apparatus 100 according to the embodiment of the present invention includes a mold M that accommodates an object P to be molded.

The mold M is a metal mold in which the shape is previously formed in order to form the molded article P into an arbitrary shape. In this embodiment, the other end of the above-described connecting member 127 can be easily inserted So as to form a circular pipe shape having an inner space. And a support plate (not shown) disposed on the lower part and the upper part of the molded article P accommodated in the mold M, if necessary. In this case, the support plate disposed on the upper side of the workpiece P is disposed between the workpiece P and the other end of the linking member 127 to be in contact with the linking member 127, Can be disposed between the molded article (P) and the mold pedestal (152).

The article (P) may be a powder of ore. However, the present invention is not limited thereto, and any material can be used as long as it can be massed through pressurization or heating, such as a plurality of stacked plates or blocks.

The workpiece P is received inside the mold M and the mold M is seated in the mold pedestal 152. [ Therefore, the object P is carried into the heating furnace 110 in a state of being accommodated in the mold M or taken out of the heating furnace 110.

The transfer unit 140 transfers the workpiece P to the inside of the heating furnace 110 or the molded workpiece is taken out to the outside of the heating furnace 110.

To this end, the transfer unit 140 includes a rail 141, a mold station 150, and a moving table 145.

The rail 141 is provided inside and outside the heating furnace 110 through the opening OP of the heating furnace 110 for driving the mold station 150. Here, the outside of the heating furnace 110 means a preliminary chamber 115 to be described later.

In this embodiment, the rail 141 is constituted by a rectangular pipe disposed in parallel. However, the present invention is not limited thereto, and various modifications are possible, for example, in the form of a round rod or a triangular pipe, or in the form of a blade.

The mold station 150 runs on the rail 141 and moves the mold M in the preliminary chamber 115 into the heating furnace 110 to move the workpiece P into the heating furnace 110 And is placed inside the heating furnace 110 until compression molding is completed. When the compression molding is completed, the mold M is moved back to the outside of the heating furnace 110 with the mold M mounted thereon, and the molded product is taken out.

The mold station 150 includes a mold pedestal 152 and a heat insulating wall 155.

The mold pedestal 152 is a structure for supporting the mold M. The mold base 152 is formed in a flat plate shape and has an insertion groove 153 into which the fixing cylinder 125 is inserted and two rail grooves (not shown) into which the rail 141 is inserted . As described above, in the present embodiment, the rail 141 is formed of a rectangular pipe. Accordingly, the rail groove is formed as a groove into which a rectangular pipe can be inserted.

Two of the heat insulating walls 155 are disposed at positions spaced a predetermined distance from the mold pedestal 152 and are disposed on both sides of the mold pedestal 152 with the mold pedestal 152 interposed therebetween. Therefore, the mold pedestal 152 is disposed between the two heat insulating walls 155.

The heat insulating wall 155 is coupled with the mold pedestal 152 through the rod-shaped frame 159 and moves together with the mold pedestal 152. Therefore, a rail groove (not shown) having the same shape as the mold pedestal 152 may be formed under the heat insulating wall 155.

The heat insulating wall 155 may be divided into a first heat insulating wall 156 and a second heat insulating wall 157.

The first heat insulating wall 156 is disposed at one side of the mold pedestal 152 and when the mold pedestal 152 is completely taken out of the heating furnace 110 as shown in FIG. And closes the opening OP. The first heat insulating wall 156 is disposed inside the heating furnace 110 together with the mold pedestal 152 when the second heat insulating wall 157 described later is disposed in the opening OP.

The second heat insulating wall 157 is disposed on the other side of the mold pedestal 152 and is disposed in the opening OP of the heating furnace 110 when the mold pedestal 152 is completely carried into the furnace 110 Closing the opening (OP). Therefore, the second heat insulating wall 157 is disposed between the mold pedestal 152 and the moving table 145 described later.

The heat insulating wall 155 may be made of various materials as long as it has a low thermal conductivity and is not deformed at high temperatures. Further, the heat insulating wall 155 may be formed to be equal to or similar to the thickness of the heating furnace 110. The heat insulating wall 155 may be formed of a single member, but it is also possible to stack a plurality of members as necessary.

The heat insulating wall 155 is configured to seal the opening OP of the heating furnace 110 as much as possible. Therefore, the heat insulating wall 155 can be formed in the same shape as the opening of the heating furnace 110, and a sealing member is disposed around the heat insulating wall 155 to seal the gap formed with the heating furnace 110 . Here, the sealing member may be made of rubber, synthetic resin, urethane, silicone, or the like having excellent airtightness, but is not limited thereto.

The movable stage 145 is formed in a rod shape, one end is fastened to the second heat insulating wall 157, and the other end is exposed to the outside of the preliminary chamber 115. Therefore, when the worker pushes or pulls the other end of the movable stage 145 from the outside of the preliminary chamber 115, the mold station 150 connected to the movable stage 145 moves together with the movable stage 145.

More specifically, when the worker pulls the movable stage 145, the mold station 150 connected to one end of the movable stage 145 moves to the preliminary chamber 115, and the mold M is moved into the preliminary chamber 115 . When the operator pushes the movable carriage 145, the mold station 150 moves into the heating furnace 110, and the mold M is disposed inside the heating furnace 110.

In the present embodiment, the operator manually moves the mold station 150 using the movable table 145. However, the present invention is not limited to this example, and a driving means such as a motor may be used So that the mold station 150 is automatically moved.

Next, the operation of the high-temperature compression apparatus according to the present embodiment will be described.

The connecting member 127 is separated from the heating furnace 110 and the heating furnace 110 is heated while the mold station 150 is disposed in the preliminary chamber 115 as shown in Fig. At this time, a cover or a cap 111 is coupled to the hole H from which the connecting member 127 is detached.

In this process, the first heat insulating wall 156 is disposed in the opening OP of the heating furnace 110 to prevent the heat from flowing out to the outside of the heating furnace 110.

Nitrogen is supplied to the interior of the heating furnace 110 and the preliminary chamber 115 through a gas supply device (not shown) to form a nitrogen atmosphere.

4, after the connection member 127 is disposed in the through hole H of the heating furnace 110, the worker moves the movable base 145 to the movable base 145, Thereby moving the mold station 150 to the inside of the heating furnace 110. At this time, the mold (M) disposed in the preliminary chamber (115) is supplied with the powder as the object (P).

As the mold station 150 moves, the second heat insulating wall 157 is disposed in the opening OP of the heating furnace 110 so that the heat flows out to the outside of the heating furnace 110, ) From entering the inside of the apparatus.

Subsequently, as shown in Fig. 1, the pressurizing portion 120 is used to press the workpiece P. As shown in Fig.

The fixed cylinder 125 is lifted and inserted into the insertion groove 153 of the mold pedestal 152. The movement of the mold pedestal 152 is fixed. The connection member 127 connected to the pressurizing cylinder 121 is inserted into the inside of the mold M at the tip end to press the molded article P received in the mold M. [

In this process, the thickness measuring unit 130 measures the moving distance of the lowering of the connecting member 127 as the workpiece P is agglomerated.

Thereafter, when the mass formation of the workpiece P is completed, the pressurizing cylinder 121 raises the connecting member 127, descends the fixed cylinder 125, and is separated from the insertion groove 153.

4, the pressing portion 120 is completely separated from the mold M and the mold pedestal 152.

Subsequently, the operator pulls the movable stage 145 to move the mold station 150 to the preliminary chamber 115. 3, the opening OP of the heating furnace 110 is again arranged with the first heat insulating wall 156, so that the heat inside the heating furnace 110 flows out to the outside of the heating furnace 110 .

Then, the worker takes the molded product, which has undergone the bulking, to the outside of the preliminary chamber 115 and supplies new powder to the mold M for a new experiment. At this time, since the heating furnace 110 is maintained at the set temperature or can be raised to the set temperature within a very short time, the newly supplied powder can be supplied into the heating furnace 110 within a very short time. Further, even if the door of the preliminary chamber 115 is opened for fresh powder supply, since the opening (OP) of the heating furnace 110 is again disposed with the first heat insulating wall 156, air outside the preliminary chamber 115 Can be prevented from flowing into the interior of the heating furnace 110.

As described above, in the case of the high-temperature compression apparatus 100 according to the present embodiment, it is not necessary to cool the heating furnace 110 in the process of removing the molded product and supplying fresh powder, and the nitrogen atmosphere inside the heating furnace 110 is maintained . Therefore, the experiment can be continuously performed, so that the measurement time can be minimized as compared with the conventional method in which the heating furnace 110 needs to be heated and cooled each time. Therefore, the operating rate of the apparatus can be increased.

Meanwhile, the high-temperature compression apparatus 100 according to the present invention is not limited to the above-described embodiments, and various modifications are possible.

5 and 6 are cross-sectional views schematically showing a high-temperature compression apparatus according to another embodiment of the present invention, in which a portion corresponding to portion A in FIG. 4 is partially enlarged.

Referring to FIGS. 5 and 6, a step is formed in the opening OP of the heating furnace 110 in the high-temperature compression apparatus according to the present embodiment. More specifically, the heating furnace 110 of the present embodiment has expansion portions E1 and E2 having areas larger than the opening OP on the outside and inside of the opening OP. The extension portion E may be formed in the shape of a groove extending in the direction of the opening OP in a direction other than the bottom surface of the heating furnace 110.

Correspondingly, the insulating wall 155 of this embodiment has a flange 155a. When the insulating wall 155 is coupled to the opening OP, the flange 155a is coupled to the extensions E1 and E2.

When the mold station 150 moves to the preliminary chamber 115, the flange 155a of the first heat insulating wall 156 is connected to the first extension E ). When the mold station 150 moves into the heating furnace 110, the flange 155a of the second heat insulating wall 157 is located at the outer side of the opening OP (on the side of the preliminary chamber 115) And is coupled to the extension E2.

Accordingly, the range of movement of the mold station 150 is limited by the flange 155a.

When the high-temperature compression apparatus is constructed as described above, the heat insulating wall 155 is more firmly coupled to the opening OP of the heating furnace 110 to block the inside and the outside of the heating furnace 110. Accordingly, the heat loss of the heating furnace 110 can be minimized, and the nitrogen atmosphere can be maintained more easily.

However, the present invention is not limited to the configuration of this embodiment.

For example, a protrusion is formed on the heat insulating wall 155, and a groove is formed around the opening OP of the heating furnace 110 so that the protrusion is fitted into the groove. And can be modified in various forms as long as it can effectively seal between the openings OP of the furnace 110.

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, but, on the contrary, It will be obvious to those of ordinary skill in the art.

100: high temperature compression device
110: heating furnace
115: auxiliary chamber
120:
121: pressure cylinder
125: Fixed cylinder
127:
130: thickness measuring unit
140:
141: Rail
145: Moving Base
150: Mold station
152: mold base
155:
156: first insulating wall
157: second insulating wall

Claims (10)

A heating furnace having an opening through which an object is injected; And
A transferring part for transferring the object to be molded into or out of the heating furnace through the opening;
/ RTI >
The transfer unit
And a plurality of heat insulating walls moving together with said workpiece and blocking said openings.
The image forming apparatus according to claim 1,
A rail disposed along a transport path of the article;
A mold station disposed to move along the rails; And
A movable stage connected to the mold station and moving the mold station by an external force;
Lt; / RTI >
3. The mold station according to claim 2,
A mold pedestal coupled to the rail for movably supporting the mold in which the molding is accommodated; And
And the plurality of heat insulating walls respectively disposed on both sides of the mold pedestal.
The heat exchanger according to claim 3,
A first heat insulating wall disposed at one side of the mold pedestal and disposed in the opening of the heating furnace to block the opening when the mold pedestal is completely taken out of the heating furnace; And
A second heat insulating wall disposed on the other side of the mold pedestal and disposed in the opening of the heating furnace to block the opening when the mold pedestal is completely carried into the heating furnace;
Lt; / RTI >
The method of claim 3,
Further comprising a preliminary chamber accommodating the mold pedestal when the mold pedestal is taken out of the heating furnace.
6. The apparatus according to claim 5,
Wherein one end is fastened to the mold station and the other end is disposed outside the preliminary chamber.
The method of claim 3,
And a pressurizing portion for pressurizing the object to be molded in the heating furnace.
8. The apparatus according to claim 7,
A fixing cylinder disposed at a lower portion of the heating furnace and having one end inserted into the insertion groove formed in the mold support through the heating furnace;
A pressurizing cylinder disposed on the upper portion of the heating furnace; And
A connecting member having one end connected to the pressurizing cylinder and the other end inserted into the mold through the heating furnace;
/ RTI >
Wherein the connecting member pressurizes the workpiece by driving the pressure cylinder.
9. The method of claim 8,
And a thickness measuring unit connected to the connecting member and measuring a thickness of the molding based on a moving distance of the connecting member.
5. The method of claim 4,
Wherein the heating furnace has extension portions formed on the outer side and the inner side of the opening and each having an area larger than the opening,
Wherein the heat insulating wall includes a flange coupled to the extension when the heat insulating wall is located in the opening.

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