JP2807146B2 - Billet cutting method and extruder for long ingot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention utilizes an ingot made of aluminum, copper, tin, zinc, lead, an alloy thereof and the like used for extrusion molding without waste, and provides a rational cutting procedure for the ingot. The present invention relates to an adopted billet cutting method and a billet extruder.

[0002]

2. Description of the Related Art As a conventional general extrusion molding of this type, a long ingot manufactured by continuous casting or the like is cut in advance in the length direction thereof in a predetermined size, and is prepared. The billet is heated and then inserted into the extruder container. The billet inserted into the container is extruded by the stem and becomes a product through a die. In this case, it is disadvantageous in terms of space to prepare various types of billets of fixed size with slightly different lengths, and furthermore, an appropriate ingot capable of cutting fixed size billets without generating scraps. Since it is difficult to manufacture, the generation of offcuts was unavoidable, and the yield was extremely poor.

[0003] Therefore, a fixed size billet required for extruding a product is sequentially cut out from a long ingot and extruded, and the length of the end material less than the fixed size generated at the end of the ingot is adjusted. A proposal has been made, for example, in Japanese Patent Publication No. 61-28412, in which the starting end of the next ingot is cut so as to form a billet of a predetermined size and inserted into a container of an extruder together with the scraps.
Usually, it is sufficient to cut the billet to be inserted into the extruder sequentially as described above and proceed with the extrusion process, but sometimes the length of the end material is too short, handling is difficult and transfer to the extruder is difficult. Sometimes it is impossible. Therefore, according to the same publication, when the short piece that is too short occurs, the same piece is left with the previous fixed billet without being cut out, and the remaining billet is cut in half and divided, and each divided billet is divided. It has been proposed to sequentially cut the beginning end of the next long ingot so that the billet length becomes the same as the fixed billet length, and transfer the divided billet and the newly cut billet to an extruder. .

[0004]

However, according to the extrusion method disclosed in the above-mentioned publication, various limits are imposed on the limit length in handling of extremely short scraps generated at the end of a long ingot. There is no standard that can be applied to various types of long ingots. Therefore, even if a long ingot is cut in accordance with, for example, the procedure disclosed in the same publication, the limit length corresponding to each ingot is determined each time based on empirical rules in relation to the cross-sectional area of the ingot. There is a need to.
Therefore, when it is decided artificially, complicated and unnecessary time is required, and when it is attempted to automate using a microprocessor, an extremely complicated program is required.

Further, as described above, the remaining billet is cut into half and divided, the starting end of the next long ingot is cut, and the divided billet and the newly cut billet are joined together in an extruder. Also, when the billet divided in half is close to the limit length in handling, the ease of handling at the time of transfer is not guaranteed, and the billet may fall during transfer to the extruder. . In particular, as disclosed in the above publication, when a divided billet is transferred in front of a newly cut billet, it often falls down during the transfer.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to objectively define a limit length in the handling of the above-mentioned scrap material and to easily apply it to any kind of long ingot. Another object of the present invention is to provide a billet cutting method and a billet extruder for a long ingot, which can automatically wait for a scrap material and can surely transfer the billet to an extruder even if the billet is close to a limit length in handling. .

[0007]

In order to achieve the above object, the most basic structure of the present invention is to insert a fixed-size billet into an extruder and extrude the same so as to insert the billet from a long ingot into the extruder. should be cut out of the sizing billet, residual billet produced at the end when the billet cutting and next long Lee
Combine with cutting material cut out from the starting end of ngot
Into the extrusion device as a fixed billet length.
Or, trouble in handling of the remaining billet or the cut material
Setting a minimum scrap length not hexa, 1/3 of the minimum insertion length of the sizing billet determined by die shape <br/> the same extruder
Is to determine .

When the remaining billet length cut at the end of the long ingot is shorter than the minimum scrap length based on the minimum scrap length thus determined ,
Cut off the fixed size billet at the end with the remaining billet left.
Cross, and with its cutting billet was cut into two or more said minimum scrap length and dividing scrap, minus the length of the divided scraps the next long ingot from the sizing billet length The billet is cut into two billets having the same dimensions, and each cut material is combined with the above-mentioned two divided pieces to be sequentially inserted into an extruder as a fixed billet length.

Further, similarly cut material length of the starting end of the next long ingot, it is shorter than the minimum scrap length, with obtaining a split end member by cutting the remaining billet to two, next The long ingot of the above-mentioned fixed size billet length
The cut pieces are cut out by the length obtained by subtracting the length of the cut pieces from the pieces , and each cut piece is combined with the next cut piece and inserted into the extruder sequentially.

An extruder according to the present invention for realizing the above cutting method is provided with an ingot conveying device installed on the front surface of a loading table of a long ingot, and an extruder installed adjacent to an end of the ingot conveying device. An ingot cutting device, a billet carrier moving between the cutting device and the billet handling device, and an extruding device installed via a billet heater adjacent to the billet handling device. Between the billet handling device, a scrap material standby device equipped with a scrap material gripping member that can be moved up and down by the control driving means is installed,
The billet carrier includes a control drive unit that rotates a predetermined angle about a vertical axis at a billet transfer position of the billet handling device, and directs the billet in a feeding direction of a next process.

The end material gripping member is normally at the raised position, and when the remaining billet is divided, one of the two divided end materials is gripped and returned to the raised position to stand by. After the cut material having a length obtained by subtracting the length of the divided piece from the length of the fixed billet cut from the next long ingot is transferred to the extruder together with one of the other divided pieces remaining on the carrier. Next, when the next cutout material having a length obtained by subtracting the end material length from the next fixed billet length cut out from the next long ingot is transferred by the billet carrier and reaches the standby position, the cutout material is moved to the rising position. The control driving means performs a control operation of lowering a certain divided piece and transferring it onto the billet carrier, and then returning to the raised position again. When two short and long billets are combined and inserted into the extruder, the billet carrier rotates so that the short billet is positioned behind the long billet in the insertion direction. Let it.

[0012]

A long ingot manufactured by continuous casting or the like is repeatedly cut in a lengthwise direction at a fixed size, heated sequentially, and then each billet is sequentially inserted into a container of an extruder. The fixed-size billet inserted into the container is extruded by the stem, and becomes a product through a die. When a fixed billet is sequentially cut from a long ingot as described above, the length of the long ingot is usually not an integral multiple of the length of the fixed billet (including the cutting allowance). Remnants will remain. In order to use this scrap effectively, the cutting billet at the beginning of the next long billet is cut to a length obtained by subtracting the length of the scrap from a predetermined fixed dimension, and the two are combined and extruded. Insert into the machine container. However, if the length of the offcuts is extremely short, the offcuts easily fall over while being transferred to the extruder, which hinders handling.

[0013] The first invention is characterized in that a length limit that does not hinder the handling of the above scraps is defined. 4, the length of the end-bi <br/> let 9a occurring at the end of the time of the billet cutting (a), the end which remains is finally cleaved
Da The length of the remaining billet 9a 'is a timber (a1), of the extruder
The minimum insertion length of more determined sizing billet chair shape (c), the limit end member not hindrance to handling length (minimum scrap length) (m), sizing is required in the extrusion Let the length of the billet 9 be (d). Here, the minimum insertion
Inset length (c) is widely known, for example
For example, despite having the same outer shape in sashes, etc.,
The combination of simple and complex cross-sections
In many cases, the same extruder is used.
When extruding, the die must be replaced. So
Therefore, the product capacity required for each sash has also been changed.
The billet length that can be inserted into the extruder must be changed.
I can't get it. The shortest billet length to be changed
In the present invention, the minimum billet length is defined as the minimum insertion length (c).
ing. In order to facilitate understanding, in the following description, the cutting margin by the saw blade and the cut-off length of the end of the long ingot 10, 10a will be ignored.

[0014] Now, when attention is paid to the billet length to be cut at the end of the time of billet cut from the long ingot (a), as shown in FIGS. 4 (a) (b) ( c), a
According to three cases of ≧ d + m, c ≦ a <d + m, and m ≦ a <c, it is necessary to change the cutting procedure of the long ingots 10a and 10b as follows.

When a ≧ d + m, (FIG. 4 (a)) End billet 9a cut to the end when billet is cut
If the length (a) of the long ingot 10 is equal to or greater than the length obtained by adding the minimum scrap length (m) to the fixed billet length (d) required for extrusion (≧ d + m), The last cutting is performed at a fixed billet length (d), and the remaining billet 9a 'is cut off at the end at the length (a1 = ad) . The remaining billet 9a 'is once retracted from the cutting portion,
The cutting of the next long ingot 10a is started. The new cutting of the long ingot 10a at this time is shown in FIG.
As shown in the figure, the length (d- a1 ) is obtained by subtracting the remaining billet length ( a1 ) from the fixed billet length (d). Next, the newly cut billet 9b and the remaining billet 9a
And insert it into the container of the extrusion device. In this case, since the length (a1) of the remaining billet 9a 'is longer than the minimum length (m) of the scrap, there is almost no hindrance in handling during transfer.

In the case of c ≦ a <d + m (FIG. 4 (b)) The length (a) of the end billet 9a generated at the end portion when cutting the billet is the minimum insertion length (c) determined by the extruder.
When the length is shorter than the sum of the length (d) of the fixed size billet and the length (m) of the minimum end material (<d + m),
Cut out fixed size billet 9 and length of remaining billet 9a '
Since the length (ad) is shorter than the minimum scrap length (m), the fixed billet 9 at the end is not cut out but is left together with the scrap as shown in FIG. 1
/ 2 divided billets 11a and 11b having a length (a / 2)
Cut into pieces. The split billets 11a, length naturally minimized scraps length of 11b (m) because of longer than, never interfere almost Treatment for transfer to the extruder. The divided billets 11a and 11b are temporarily retracted from the cutting section and start cutting the next long ingot 10a. At this time, the new cut of the long ingot 10a is set to a length (a2 / 2 ) obtained by subtracting the divided billet length (a / 2) from the fixed billet length (d). Next, the newly cut billet 9b and one of the divided billets 11a, 11b
And insert it into the container of the extrusion device. Subsequently, the same operation is repeated to obtain the remaining one divided billet 11.
Insert b and 11a into the container of the extrusion device.

When m ≦ a <c (FIG. 4 (c)) The length (a) of the end billet 9a generated at the end portion when the billet is cut is equal to or more than the minimum end material length (m). If the minimum insertion length (c (= d)) less than that determined by and extruder will be inserted into the container for the next extrusion apparatus with said end billet 9a cut out long ingot 10a, in this case Figure 4C-(i) as shown in (i) sizing the billet length (d) from the remaining billet length (a1) obtained by subtracting length (d-a) is the minimum end member length (m) or more in There is ((d-
a1) ≧ m) and (ii) as shown in FIG. 4c- (ii).
Sizing the billet length and when the remaining billet length from (d) (a1) obtained by subtracting length (d-a1) a minimum edge material length (m) is shorter than ((d-a1) <m )) Then, the next time
Different cutting procedures for the long ingot 10a are employed.

When (d- a1 ) ≧ m in (i), the next long ingot 10a is inserted into the fixed billet length (d = c).
Length (d-a1 ) minus the end billet length ( a1 )
) , And the cut billet 9b and the end billet 9a generated at the previous end are put together in the container of the extruder. That is, this method is illustrated in FIG.
This is similar to the above-described embodiment. When (d- a1 ) <m in (ii), that is, when the cut-out length ( d-a1 ) of the starting end of the next long ingot 10a is shorter than the minimum end material length (m), FIG. As shown in (b), first, the end billet 9a is cut in half by two to obtain divided billets 11a and 11b, which are temporarily retracted from the cut portion, and the cutting of the next long ingot 10a is started. I do. Here, both the split billet length (a1 / 2) and the newly cut length (a2 = d-a1 / 2) of the next long ingot are longer than the minimum scrap length (m). There must be. That is, it is necessary that (a1 ≧ 2m) and in (d -a1 ≧ m). Next, the newly cut billet 9b and the divided billet 11
a and 11b together and insert into the container of the extrusion device. Subsequently, the same operation is repeated to insert the remaining one divided billet 11b, 11a into the container of the extrusion device. That is, this method is the same as that shown in FIG.
The embodiment is similar to the embodiment.

Here, the fixed billet length (d) needs to be at least the minimum insertion length (c) determined by the die shape of the extruder. That is, the minimum length of the fixed billet length (d) is equal to the minimum insertion length (c).
Therefore, even when the fixed billet length (d) is equal to the minimum insertion length (c), which is the minimum length, the above relationship must be established. That is, (ca
< M ), (a ≧ 2m) and the above condition
The billet length (d) must be equal to the minimum insertion length (c).
Relationship from (c- (a / 2) ≧ m) and needs are satisfied at the same time. When these relationships are arranged, 2m ≧ c
−m, and the relationship m ≧ (c / 3) is established.

As long as this relationship is satisfied, not only the cutting procedure (ii) but also the cutting according to the procedure (2) does not hinder the handling of the scrap. That is, when any of the above cutting procedures is followed, the minimum end material length (m) that hinders handling during transfer to the extruder is set to one of the minimum insertion length (c) determined by the extruder. If / 3 is set as the reference value and the length is set to be longer than that, it means that there is no trouble in handling of the scrap material.

In the present invention, the minimum scrap length (m)
However, when the minimum end material length (m) is set to 1/3 of the minimum insertion length (c), as described above, two billets are used, particularly a short billet. When the billet is transported together to the extruder in the forward direction in the transport direction, there is a small possibility that the billet will fall over.

Therefore, according to the present invention, the cutting material standby device having the above-described structure is provided downstream of the cutting device, and when cutting and transferring a fixed size billet, the billet is kept at the standby position, and two long and short pieces are set. When the billet is transported together by the billet carrier to the next step, the billet carrier is operated to position the short billet at the rear of the long billet in the insertion direction of the next step. By doing so, the short billet is inserted between the long billet and the stem in the next step, so that the billet never falls down during the transfer.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on illustrated embodiments. FIG. 1 is a schematic plan view of an extruder provided with the offcut waiting device of the present invention, and FIG. 2 is a side view of the same. The configuration of the extruder excluding the scrap material standby device is not much different from a general extruder of this type. Accordingly, the following description will be focused on the scrap waiting device.

In the extruder in the illustrated embodiment, an ingot transport device 3 equipped with a sizing device 2 is installed on the front surface of a loading table 1 of a long ingot 10 and is adjacent to an end of the ingot transport device 3. A cutting device 4 is provided, and a waste material standby device 5 of the present invention is installed between the cutting device 4 and the billet handling device 5. A billet carrier 6 is installed so as to be able to reciprocate between the cutting device 4 and the billet handling device 5, and a billet heater 7 is provided at a rear portion of the billet handling device 5.
Is installed, and an extruder 8 is provided adjacent to the billet heater 7.
Are arranged.

The billet carrier 6 places the billet 9 cut out of the long ingot 10 by the cutting device 4 and transfers the billet 9 from the cutting device 4 to the billet handling device 5 and also places the billet placed thereon. 9
Is rotated by a predetermined angle about a vertical axis by a built-in drive means (not shown) in order to make the direction suitable for feeding into the billet heater 7. Also,
The billet handling device 5 grasps the billet 9 carried by the billet carrier 6 from the cutting device 4 and sends the billet 9 to the billet heater 7.

As shown in FIG. 3, the waste material standby device 15 according to the present invention comprises a column 15a, a chuck 15b which moves up and down along the column 15a, and a driving means (not shown) for controlling and driving the chuck 15b. The remaining billet 9a ' having a predetermined remaining billet length ( a1 ) left in the device 4 is carried by the billet carrier 6 and the same end material standby device 15
, The chuck 15b descends and grips the remaining billet 9a ', then ascends and stops at the standby position at the upper end of the column and waits. Subsequently, when the billet carrier 6 retreats and the shortage of the fixed size billet length (d) is cut out from the next long ingot 10a, the billet carrier 6 advances with the cut material 9b placed thereon, It stops at the position of the standby device 15. Here, after the remaining billet 9a ' at the standby position is lowered together with the chuck 15b and transferred to the billet carrier 6, the chuck 15
b rises to the standby position while remaining empty.

When the remaining billet 9a 'is transferred, the billet carrier 6 removes the remaining billet 9a from the cutting material 9b.
Together with the billet handling device 5, where it is transferred to the billet handling device 5. At the time of transfer to the billet handling device 5, the billet carrier 6 rotates around the vertical axis as described above, and directs the billet 9 toward the billet heater 7. Here, if the length of the remaining billet 9a (a) the length of the cut material 9b (d-a) shorter than, the remaining billet 9
The billet carrier 6 is rotated so that a ' is located behind the cutting material 9b with respect to the billet heater 7. This is done by placing the remaining billet 9a ' and the cutout material 9b on a billet loader (not shown) and positioning the remaining billet 9a' between the cutout material 9b and the stem when pushing it into the heater 7 by the stem. This is to prevent the billet 9a ' from overturning and to transfer the billet 9a' to the subsequent process in a stable state at all times.

The extruder of the present invention equipped with the above-described various devices is used to cut the long ingot 10 and insert billets 9 of a fixed size into the container of the extruder 8 sequentially through the billet heater 7. The cutting method of the present invention will be specifically described. Note that reference numerals used in the following description are the same as those described above. In the present embodiment, the length of the billet 9 that can be inserted into the container of the extruder 8 (the billet input length determined by the extruder) is 450 to 900.
mm, and the minimum insertion length in this embodiment is 450 mm.
mm. Therefore, the minimum scrap length (m) that does not hinder handling during billet transfer in the present embodiment is 450/3 = 150 (mm) according to the first invention. Also, in this embodiment, the cutting allowance due to the saw blade thickness is omitted for easy understanding.

The cutting modes of the long ingot 10 according to the present invention are as follows: (1) a ≧ d + 150 (2) d + 150> a ≧ 450 (3) 450> a ≧ 300 (4) 300> a ≧ 150 Different cutting modes.

"Cutting mode 1": When the end billet length (a) is longer than the sum of the fixed billet length (d) and the minimum scrap length (150 mm), a long ingot is used. A billet 9 having a fixed billet length (d) is cut out from the terminal end portion 10 and the remaining billet 9a ' . Next, the starting end portion of the next long ingot 10a is cut from the fixed billet length (d) to the end material 10a.
The billet 9b and the end material 10b that have been cut out are cut to a length obtained by subtracting the length (> 150 mm), and are transferred to the extruder 8 by the above transfer procedure together.

"Cutting mode 2": The end billet length (a) is shorter than the length obtained by adding the fixed billet length (d) and the minimum end material length (150 mm), and When it is equal to or longer than the minimum insertion length 450, first, the long ingot 10
The remaining billet 9a ' is cut out to a length of 300 mm obtained by subtracting the minimum scrap length of 150 mm from the remaining billet 9a' , and the cut billet 11a is placed on the billet carrier 6 and transported to the installation position of the scrap waiting device 15. The split billet 11
When "a" reaches the standby position, the chuck 15b of the end material standby device 15 descends, grips the same billet 11a, and then ascends. When the remaining one divided billet 11b is placed on the billet carrier 6, the next long ingot 1
The starting end of 0a is (fixed size billet length (d) -150) m
m and is placed on the billet carrier 6 together with the divided billet 11b, and transferred to the extruder 8 by the above transfer procedure.

When the transfer is completed, the billet carrier 6 returns to the standby position, and the chuck 15b of the end material standby device 15 descends while holding the divided billet 11a, and is placed on the billet carrier 6. The billet carrier 6 on which the divided billet 11a is placed returns to the home position of the cutting device. At the same time, the next long ingot 1
From 0a, a cut-out material 9b having a length of (fixed size billet length (d) -300) mm is cut out, and this cut-out material 9b is placed on the billet carrier 6, and the cut-out material 9b and the divided material 9b are divided. The billet 11b is transferred to the extruder 8 according to the transfer procedure described above.

"Cutting mode 3": The length (a) of the end billet is shorter than the minimum insertion length of 450 mm and twice as long as the minimum end material length of 150 mm.
mm or more, first, the end billet 9a is halved.
Cut to the length (a / 2), and the one divided billet 1
1a is made to stand by at the ascending position of the chuck 15b of the end material waiting device 15 by the same operation as described above. Next, the starting end of the next long ingot 10a is cut to a length of (fixed billet length (d)-(a / 2)), and the same operation as described above is performed together with another single billet 11b. It is transferred to the extruder 8 according to the above transfer procedure. After this transfer,
The billet carrier 6 returns to the standby position, and the chuck 15b of the end material standby device 15
Then, it is lowered while holding a, and is placed on the billet carrier 6. Billet carrier 6 on which divided billet 11a is placed
Returns to the home position of the cutting device. At this time, at the same time, from the next long ingot 10a, the (fixed billet length (d)
The cutout material 9b having a length of − (a / 2)) mm is cut, and the cutout material 9b is
Is transported to the extruder 8 in accordance with the above-described transport procedure with the billet and the divided billet 11b placed thereon.

"Cutting mode 4": The end billet length (a) is the minimum end material length of 150 mm
Twice as short as 300 mm and the minimum length of offcuts 1
When the length is 50 mm or more, the fixed billet length (d) is measured from the end of the long ingot 10 as in the “cut mode”.
Is cut out, and the remaining billet 9a ' is taken as the remaining billet 9a' . Next, the starting end of the next long ingot 10a is
It is cut to a length (a2) obtained by subtracting the length of the remaining billet 9a ' (> 150 mm) from the fixed billet length (d), and the cut billet 9b and the end material 11 are transported together. It is transferred to the extruder 8 according to the procedure.

The above embodiment shows a typical specific embodiment of the present invention, and it will be apparent from the above description that other various embodiments can be adopted.

[0036]

According to the method for cutting a long ingot and the billet extruder of the present invention, the minimum length that hinders handling of the billet during transfer is objectively determined from the minimum billet length determined by the extruder. Is determined mechanically, the billet cutting procedure is determined mechanically, and the workability and effective use of the remaining billet can be improved even when the work is performed manually, and the productivity is improved. Of course, it is easy to realize an automatic machine utilizing a microprocessor, for example.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing the overall configuration of a billet extruder according to the present invention.

FIG. 2 is a front view of the same machine.

FIG. 3 is a schematic front view showing a main part of a waste material waiting device provided in the machine.

FIG. 4 is an explanatory view showing three aspects of an end billet.
You .

FIG. 5 is an explanatory diagram showing an example of a cutting procedure by a cutting method according to the present invention.

[Description of Signs] 1 Loading table 2 Sizing device 3 Ingot transport device 4 Cutting device 5 Billet handling device 6 Billet carrier 7 Billet heater 8 Extruder 9 Sizing billet 9a End billet 9a ' Remaining billet 9b (Next long length Cutting material (cut out from ingot) 10, 10a (This and next time) long ingot 11a, 11b Split billet 15 End material standby device 15a Column 15b Chuck (a) End billet length (a1) Remaining billet length (c) ) Minimum insertion length (d) Fixed billet length (m) Minimum scrap length

Claims (6)

(57) [Claims] To cut out a fixed billet (9) to be inserted into the extruding device (8) from a long ingot (10), the fixed billet (9) is inserted into the extruding device (8) for extrusion molding. out, and the remaining billet to be cut at the end when the billet cutting (9a ')
And the next long ingot (10a)
Fixed billet length in combination with cutting material (9b)
(D) when inserting it into the extrusion device (8),
Handling the supporting of the remaining billet (9a ') or the cut material (9b)
Minimum scraps length not hexa a disabled a (m), the same extrusion apparatus (8)
Minimum insertion length of fixed size billet determined by die shape
(c) A method for cutting a long ingot, wherein the method is set to 1/3 of (c). 2. A switching by the cutting method according to claim 1
The remaining billet length (a1) to be cut is the minimum scrap length.
When shorter than (m), the remaining billet (9a ') is
Cut the fixed size billet (9) at the end while leaving it.
Cutting the billet wherein a (9a) Minimum end member length (m) above was cut into two divided scrap (11a, 11b) and thereby, the sizing billet length for the next long ingot (10a) (D) is cut out into two billets each having a size obtained by subtracting the length of each divided piece (11a, 11b), and each cut piece (9b, 9b) is cut into the two divided pieces (1).
1a, 11b) in combination with fixed size billet length (d)
As a method of cutting a long ingot which is sequentially inserted into an extruder (8). 3. When the cutout material length (a2) at the starting end of the next long ingot (10a) cut out by the cutting method according to claim 1 is shorter than the minimum cutoff material length (m). , the remaining billet (9a ') was cut into two divided scrap (11a, 11b) together to obtain the next time length
Measure the length of the ingot (10a) to the fixed size billet length (d)
Cut out the length obtained by subtracting the length of the divided offcuts (a / 2) from
Each divided piece (11a, 11b) and the next cut out material (9
b) a method for cutting a long ingot, which is sequentially inserted into the extrusion device (8) in combination with (b). 4. An ingot transport device (3) installed on the front surface of a loading table (1) for a long ingot (9).
And an ingot cutting device (4) installed adjacent to the end of the ingot transport device (3); and a billet carrier (6) moving between the cutting device (4) and the billet handling device (5). ), And an extruder (8) provided adjacent to the billet handling device (5) via a billet heater (7), wherein the cutting device (4) and the billet handling device (5) are provided. )
And a scrap material standby device (15) provided with scrap material gripping means (15b) that can be raised and lowered by a control driving means, and the billet carrier (6) is provided with the billet handling device (15). 5) A billet extruder comprising a control driving means for rotating a billet at a predetermined angle about a vertical axis at a billet transfer position and for orienting the billet in a feeding direction of a next process. 5. An ingot transport device (3) installed in front of a loading table (1) for a long ingot (9).
And an ingot cutting device (4) installed adjacent to the end of the ingot transport device (3); and a billet carrier (6) moving between the cutting device (4) and the billet handling device (5). ), And an extruder (8) provided adjacent to the billet handling device (5) via a billet heater (7), wherein the cutting device (4) and the billet handling device (5) are provided. )
A waste material holding device (15) provided with a waste material gripping means (15b) that can be moved up and down by the control drive means is installed between the above and the waste material gripping means (15b). , And descends after cutting according to the cutting method described in the above-described claim 2 to 3 and is divided into two pieces (11a, 11a).
11b), and returns to the ascending position to stand by, and cuts out the length obtained by subtracting the length of the divided scrap from the length (d) of the fixed size billet cut out from the next long ingot (10a). After the material (9b) is transferred to the extruder (8) together with one of the other divided scraps (11b, 11a) remaining on the billet carrier (6), the next long ingot (1) is transferred.
0a), a cutting material (9) having a length obtained by subtracting the remaining billet length (a 1 ) from the fixed billet length (d) cut from (9).
When b) is transported by the billet carrier (6) and reaches the standby position, the divided scraps (11a, 11b) at the ascending position are lowered and transferred onto the billet carrier (6). A billet extruder, wherein a control operation for returning to the raised position is performed by the control driving means. 6. Two short and long billets (9a, 9)
When the billet carrier (6) is inserted into the extrusion device (8) in combination with the b), the short billet (9a, 9b) is rotated by the long billet (9b, 9a) in the inserting direction. The billet extruder according to claim 5, wherein the extruder is rotated so as to be located rearward.