KR102492327B1 - Billet supplying apparatus with half cutting device - Google Patents

Abstract

The present invention relates to a billet half-cutting and supplying device and, more specifically to a billet half-cutting and supplying device which, when uniformly cutting and discharging billets to a required specific length, repeats an operation of forcibly pushing, cutting and supplying a billet inside a heating furnace and an operation of reversely moving the billet by a forced back-push after cutting of the billet, thereby forcibly separating a leading billet from a trailing billet so that the leading billet and the trailing billet do not stick to each other. The billet half-cutting and supplying device of the present invention comprises: a heating furnace which continuously heats and supplies a plurality of billets; a cutting part which cuts the billet supplied from the heating furnace; a half-cutting and lowering table which supports the billet between the heating furnace and the cutting part and can move up and down; a discharging part which moves the billet cut by the cutting part forward; a back-push part which moves up and down with the discharging part below the discharging part, and pushes the billet backward to the position of the heating furnace; and a separating means which separates the leading billet and the trailing billet, which have stuck together by the internal heat of the heating furnace, when the half-cutting and lowering table descends.

Description

Billet supplying apparatus with half cutting device}

The present invention relates to an apparatus for taking out half of a billet, and more particularly, to an operation of forcibly pushing and supplying a billet in a heating furnace when the billet is uniformly cut into a required specific length and discharged, and a forced back push after cutting the billet. It relates to a billet half take-out device for forcibly separating the preceding billet and the succeeding billet due to the phenomenon in which the preceding billet and the succeeding billet stick to each other while repeating the backward operation of the billet by the

The aluminum extrusion process is a process of producing a product having a desired cross-section by cutting continuously cast aluminum and extruding it through an extruder by heating it.

A typical continuous casting process is as follows.

First, an aluminum alloy material or the like as a base material is put into a melting furnace to be melted, and it is heated by inducing electromagnetic waves using an electromagnetic stirrer to impart certain fluctuations to the melting furnace.

Subsequently, the molten metal is cooled while being injected into a casting machine to be manufactured into a bar-shaped aluminum billet) and then transferred through a transfer conveyor.

By cutting the aluminum billet using an aluminum billet cutting device, the butt generated during cutting is eliminated and a billet having a suitable constant length is supplied.

Republic of Korea Patent Registration No. 10-2367716 (2022.02.28.) discloses a billet half-takeout device that can reduce the overall size by simplifying the structure of the device and reduce the billet discharge time by reducing work steps.

According to the billet half take-out device, the billet is divided into a primary billet (B1, preceding billet) and a secondary billet (B2, trailing billet), and the primary billet (B1) and secondary billet (B2) are unit billets. (U) is delivered in turn from the heating furnace 10 to be cut. And the cutting unit 40 cuts the previous billet into a plurality of unit billets (U).

At this time, after cutting and discharging one unit billet U, the back push unit 60 pushes the remaining billets into the heating furnace 10 again. Accordingly, the remaining billets are heated inside the heating furnace 10 and then cut into unit billets U by the cutting unit 40 . In this way, heating and cutting of the billet are repeatedly performed by the billet halves take-out device.

However, as the rear end of the preceding billet and the front end of the succeeding billet are repeatedly heated in contact with each other, a phenomenon in which the preceding billet and the succeeding billet are stuck due to heat occurs. In this case, as shown in FIG. 2, after the last part of the preceding billet is cut into two half billets H1 and H2, when the half descending table 30 descends, the half billet H2 moves to the trailing billet B2. There was a problem of not being able to descend with the half-half descending table 30 due to sticking.

The present invention is to solve the above problems, and when the billet is constantly cut and discharged to a required specific length, the operation of forcibly pushing and supplying the billet in the heating furnace and the billet by the forced back push after cutting the billet The purpose is to forcibly separate the preceding billet and the succeeding billet due to the phenomenon in which the preceding billet and the succeeding billet stick together while repeating the reverse operation.

In order to achieve the above object, the billet half take-out device of the present invention includes a heating furnace for continuously heating and supplying a plurality of billets; a cutting unit for cutting the billet supplied from the heating furnace; a half-half descending table capable of supporting billets between the heating furnace and the cutting unit and moving up and down; a take-out unit for moving the billet cut by the cutting unit forward; a back pusher that moves up and down together with the take-out part at the lower part of the take-out part and pushes the billet to the rear where the heating furnace is located; and separating means for separating preceding billets and succeeding billets that are stuck together by heat inside the heating furnace when the half descending table descends.

The separation means is a separation cover mounted on the upper part of the half-half descending table and wrapping around the billet in an arch shape, and the separation cover forcibly pulls down the previous billet while descending together with the half-half descending table.

An impact piston is mounted on the separation cover to generate an impact by hitting the separation cover.

The billet half-exhaust device of the present invention can automatically separate two billets stuck to each other by heat when the billets are constantly cut to a specific required length and discharged.

1 is a view briefly showing a unit billet generating method of a conventional billet half takeout device.
Figure 2 is a view for explaining the problems of the conventional billet half take-out device.
Figure 3 is a view showing an improved billet half take-out device according to an embodiment of the present invention.
Figure 4 is a separate view showing a separating means according to an embodiment of the present invention.
5 to 12 are views showing the process of cutting and taking out a billet by the billet half take-out device according to an embodiment of the present invention.

As shown in FIG. 1, the present invention relates to a billet halves take-out device for cutting a billet (B1) into n unit billets (U) having a constant length and supplying them to an extruder. That is, the device for taking out half of the billet of the present invention is a device for uniformly cutting the long initial billet (B1) into a required specific length and supplying it to the extruder.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 3 to 12, the billet half take-out device of the present invention includes a heating furnace 10, a fixed body 20, a half-descent table 30, a cutting part 40, a take-out part 50, It consists of a back push unit 60, a discharge device (not shown) and a separating means 80.

The billets cut by the billet half take-out device of the present invention can be divided into a primary billet (B1) (preceding billet) and a secondary billet (B2) (subsequent billet). The primary billet B1 and the secondary billet B2 are sequentially supplied from the heating furnace 10 to be cut into a plurality of unit billets U, respectively. The heating furnace 10 includes a cutting progress supply device (not shown) that pushes the billets B1 and B2 heated therein by the cutting length.

As shown in FIG. 3, the primary billet is pushed out of the heating furnace 10, and the primary billet B1 is supported by the transfer roller 31 installed on the half-half lowering table 30. The half-half descending table 30 is installed on the fixed body 20, and the first rail part 21 for guiding the vertical movement of the half-half descending table 30 is installed on the fixed body 20. The half-half descending table 30 is located between the heating furnace 10 and the cutting part 40 and can move up and down along the first rail part 21 . The billet supplied from the heating furnace 10 can be easily moved by a plurality of conveying rollers 31 installed on the top of the half-half lowering table 30 .

And, the separation means 80 is mounted on the upper part of the half descending table 30. The separation means 80 moves up and down together with the half-half descending table 30 . The separation means 80 serves to separate the preceding billet and the succeeding billet stuck together by internal heat of the heating furnace 10 in the heating furnace 10 when the half-half descending table 30 descends.

As shown in FIG. 4 , the separation means 80 is composed of a separation cover 81 mounted on the top of the half descending table 30 and an impact piston 82 mounted on the separation cover 81 . The separation cover 81 wraps around the billet moving on the top of the half-half descending table 30 in an arch shape. The impact piston 82 is mounted on the separation cover 81 and generates an impact by striking the separation cover 81 .

Referring to FIG. 3 , the billet delivered from the heating furnace 10 is supported and moved by the transfer roller 31 , and is cut into unit billets having a predetermined length by the cutting unit 40 . The cutting unit 40 is installed on the upper part of the fixed body 20, a cutting blade 41 for cutting the billet, a motor (not shown) for rotating the cutting blade 41, and safety covering the cutting blade 41 Consists of a cover (42).

The unit billet cut by the cutting unit 40 is placed on the take-out slider 52, and after the take-out slider 52 moves forward, it is discharged to an extruder (not shown) by a discharge device (not shown).

The take-out part 50 consists of a lower base 51 and a take-out slider 52. The lower base 51 moves up and down along the second rail part 22 . In addition, a horizontal rail unit is installed on the upper part of the lower base 51, and the take-out slider 52 moves along the horizontal rail unit. The take-out slider 52 approaches or moves away from the cutting part 40 .

The back push unit 60 is installed below the take-out unit 50 . Specifically, the back push unit 60 is installed below the lower base 51 and moves up and down together with the lower base 51 . After raising, the back push unit 60 pushes the billet into the heating furnace 10 so that the billet is heated.

After the cut unit billet is discharged into the extruder, the take-out slider 52 retracts and returns to its original position. In this way, the primary billet is repeatedly cut and the unit billet is discharged into the extruder.

Meanwhile, since the primary billet remaining after cutting and discharging the (n-1)th unit billet is shorter than the set length of the unit billet, it cannot be the nth unit billet. Therefore, as shown in Figure 6, by cutting the last remaining primary billet is separated into a first half billet (H1) and a second half billet (H2) having the same length. At this time, the first half billet (H1) and the second half billet (H2) are located in opposite directions with respect to the cutting part 40, and the first half billet (H1) is at the top of the take-out slider (52). Located.

The take-out slider 52 moves forward with the first half billet H1 positioned thereon. The take-out slider 52 advances a predetermined distance to avoid interference with the safety cover 42 when ascending. Then, as shown in FIG. 7 , the lower base 51 rises along the second rail part 22 . At this time, the back push unit 60 rises together, and the back push unit 60 is located at the same height as the second half billet H2. And as shown in Figure 8, the back push unit 60 pushes the second half billet (H2) to position the second half billet (H2) on the half-half descending table (30).

When the second half-half billet H2 is positioned above the half-half descending table 30, the half-half descending table 30 descends as shown in FIG. At this time, the second half billet (H2) should descend together with the half-half descending table 30, but the first billet (B1) and the second billet (B2) continuously supplied from the heating furnace 10 are cut and In the discharge process, they are re-entered into the heating furnace 10 by the back pusher 60 and are repeatedly heated in a state of contact with each other in the heating furnace 10, so that they are attached by heat. For this reason, the second half billet (H2) adheres to the secondary billet (B2), so that when the half-half descending table 30 descends, there is a problem that it does not descend together. At this time, while the separation cover 81 descends together with the half-half lowering table 30, the second half-half billet H2 is forcibly pulled down. Accordingly, the second half billet (H2) is separated from the secondary billet (B2) and descends together with the half-half descending table (30).

On the other hand, even if the second half billet H2 is separated from the secondary billet B2 by the separation cover 81 mounted on the half descending table 30, the second half billet H2 is separated in order to effectively separate it. The impact piston 82 can be mounted on the cover 81. A bracket 82-1 for mounting the impact piston 82 is mounted on the separation cover 81, and the impact piston 82 is mounted on the bracket 82-1 to be spaced apart from the separation cover 81 by a predetermined distance. Located.

As shown in FIG. 4(b), the impact piston 82 strikes the separation cover 81 to generate an impact. This impact piston 82 is operated at the moment when the separation cover 81 and the second half billet H2 come into contact when the separation cover 81 descends together with the half-half lowering table 30, and strikes the separation cover 81. Alternatively, contact with the second half billet H2 by striking the separation cover 81 in a stationary state after the half descending table 30 descends a predetermined distance so that the separation cover 81 and the second half billet H2 contact each other. It is possible to generate an impact on the separation cover 81 to separate the second half billet (B2) from the secondary billet (B2).

The impact piston 82 as described above can be selectively actuated as needed. Also, as shown in FIGS. 5 to 12 , the impact piston 82 may be excluded from the components of the separation means 80 . That is, the separation unit 80 may be formed of only the separation cover 81 .

The half descending table 30 descends together with the second half billet B2, and at the same time, the take-out part 50 and the back push part 60 descend. When the take-out part 50 descends, the take-out slider 52 moves the first half billet H1 in the direction of the cutting part 40 while retracting. And, as shown in FIG. 10, the heating furnace 10 pushes the secondary billet B2 toward the cutting part 40. In order to produce one unit billet together with the first half billet H1, the heating furnace 10 pushes the secondary billet B2 toward the cutting part 40. That is, in the state in which the half-half descending table 30 is lowered, the secondary billet B2 is pushed from the heating furnace 10 toward the second half-billet H2 located in the take-out part 50. Accordingly, the secondary billet (B2) passes through the cutting unit 40 and pushes the first half billet (H1), and a part of the secondary billet (B2) is one unit billet together with the first half billet (H1). At the location, the cutting part 40 cuts the secondary billet B2. Since the rear end of the secondary billet B2 is supported by the heating furnace 10, even when the half-half lowering table 30 is lowered, one end of the secondary billet B2 can advance toward the cutting part 40 without tilting. The take-out slider 52 advances the first cut portion of the first half billet H1 and the second billet B2. Then, the unit billet including the first half billet (H1) is discharged into the extruder by the discharge device.

After the unit billet is discharged, the take-out part 50 and the back push part 60 rise, and the back push part 60 pushes the secondary billet B2 into the heating furnace 10. The back push unit 60 pushes the secondary billet B2 to secure a space in which the second half billet H2 can rise. Then, as shown in FIG. 11, the half-half lowering table 30 is raised together with the second half-half billet H2. When the second half billet H2 is raised by the half half descending table 30, the back push unit 60 pushes the second half billet H2 and the secondary billet B2 back into the heating furnace 10. After pushing the second half billet (H2) and the secondary billet (B2) into the heating furnace 10, the take-out part 50 and the back push part 60 descend.

Thereafter, as shown in FIG. 12, the heating furnace 10 pushes the second half billet H2 and the secondary billet B2 to the cutting unit 40. The secondary billet (B2) moves to become one unit billet together with the second half billet (H2), passes through the cutting unit 40, and the cutting unit 40 cuts the secondary billet (B2). One unit billet including the second half billet (H2) is created. The unit billet produced, including the second half billet H2, is discharged into the extruder by the discharging device. After that, the same process is repeated.

The billet halves take-out device according to the present invention is not limited to the above-described embodiment, and can be variously modified and implemented within the range permitted by the technical spirit of the present invention.

B: billet, H: half billet, U: unit billet
10: heating furnace,
20: fixed body,
21: first rail part,
22: second rail unit,
30: half descending table,
31: transfer roller,
40: cutting unit,
41: cutting blade,
42: safety cover,
50: take-out unit,
51: lower base,
52: take-out slider,
60: back push unit,
80: separation means,
81: separation cover,
82: impact piston,

Claims (3)

A heating furnace for continuously heating and supplying a plurality of billets;
a cutting unit for cutting the billet supplied from the heating furnace;
a half-half descending table capable of supporting billets between the heating furnace and the cutting unit and moving up and down;
a take-out unit for moving the billet cut by the cutting unit forward;
a back pusher that moves up and down together with the take-out part at the lower part of the take-out part and pushes the billet to the rear where the heating furnace is located;
When the half descending table descends, a separating means for separating the preceding billet and the succeeding billet, which are adhered to each other by heat inside the heating furnace, are included;
The separation means is a separation cover mounted on the upper part of the half-descent table and wrapped around the billet in an arch form,
The separation cover forcibly pulls down the preceding billet while descending together with the half descending table;
Billet half take-out device, characterized in that the impact piston for generating an impact by hitting the separation cover is mounted on the separation cover. delete delete

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