JP2731583B2 - Automatic shaping apparatus and method for extruded material - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic extruded material shaping apparatus and method for automatically shaping an extruded material in an extrusion process.

2. Description of the Related Art Conventionally, when an extruded material such as aluminum (including its alloy) is manufactured, the extruded material is bent, warped, twisted, or otherwise deformed due to a change in extrusion conditions. It was generally extruded from. For example, in the case of an aluminum extruded material (100) having a downward opening (101) as shown in FIG. 5, both side walls (102) and (102) become outside as shown in FIG. The upper wall (103) bends in a downward convex manner while spreading in the direction away from each other, and as shown in FIG. 7, both side walls (102), (102) narrow in the inward approach direction and the upper wall (103) projects upward. Easy to swell. Therefore, in general, the desired size and shape cannot be obtained as it is after the extrusion. For this reason, shaping by a straightening machine has been performed after extrusion in order to obtain desired dimensions and shapes, but such shaping largely depends on the experience and intuition of the operator, and the working efficiency has not always been good. Particularly, in the case of an extruded material having a complicated shape or a difficult-to-process alloy extruded material, it takes a long time to shape the extruded material, which has contributed to an increase in product cost. Furthermore, since the extruder and the straightening machine are often installed at separate places, there are also problems such as flaws during transportation and the need for a stockyard.

The present invention has been made in order to solve such a drawback at once, and has an object to omit a shaping operation after extrusion by automatically shaping an extruded material such as aluminum in an extrusion process. .

Means for Solving the Problems In order to achieve the above object, the present invention arranges a straightening machine composed of a straightening roll or the like in the traveling direction of the extruded material, and measures the size of the extruded material continuously extruded. Is measured before reaching the straightening machine, the amount of straightening by the straightening machine is controlled according to the result, and the extruded material is automatically shaped into a desired size and shape.

That is, according to the present invention, referring to the reference numerals in the drawings, a dimension measuring device (20) for measuring a dimension of a predetermined portion of an extruded material continuously extruded from an extrusion hole (4a) of a die (4).
And a comparing device (40) for comparing the dimension obtained by the dimension measuring device with the reference dimension and outputting a correction signal according to the comparison result, and extruding from the dimension measuring position by the dimension measuring device (20). A straightening machine (30) arranged on the material progression side,
A straightening machine control device (60) for controlling a straightening amount by the straightening machine (30) in accordance with a straightening signal from the comparison device (40) to match a dimension of the extruded material to a reference size. After measuring the dimensions of a predetermined portion of the extruded material continuously extruded from the extrusion hole (4a) of the die (4), and comparing the measured dimensions with the reference dimensions, The gist of the present invention is an automatic extruded material shaping method characterized in that the extruded material is subjected to a correction in accordance with a comparison result on the extruded material advancing side from the dimension measurement position and the dimensions of the extruded material are matched with a reference size. It is.

Operation First, the width (W) of a predetermined portion of the extruded material extruded from the extrusion hole (4a) of the die (4), for example, the extruded material (100) shown in FIG. 5 is measured by the dimension measuring device (20). I do. On the other hand, a straightening machine (30)
Is arranged. Then, the measured size is compared with the reference dimension stored in advance by the comparison device (40), and a correction signal corresponding to the comparison result is output. Upon receiving the correction signal, the correction device control device (60) controls the correction amount of the extruded material by the correction device (30), and based on this, the correction device (30) corrects the extruded material. By repeating this operation continuously, the extruded material is shaped into a desired size and shape.

Embodiment This embodiment is applied to an extruder (A) for extruding an aluminum extruded product (100) having a cross section having an opening (101) as shown in FIG. FIG. 2 shows the configuration of the extruder (A).

As shown in the figure, an extruder (A) is disposed at a front end of a container (3) for loading a ram (1) driven by a hydraulic pump or the like, a billet (2), and a container (3). It has a die (4), which is housed in a die ring (6) with a backer (5) adjacent to its front end. Further, bolsters (7) and (8) are arranged adjacent to the front ends of the backer (5) and the die ring (6), and the bolsters (7) and (8) and the die ring (6) are end platen (9). It is supported by a die slide (10) attached to the side. In the extruder (A), the aluminum billet (2) loaded in the container (3) is extruded as an extruded material (100) from the extrusion hole (4a) of the die (4) by the forward drive of the ram (1). It has been done. Here, the extruded material (100) has a wide width (W) as shown in FIG. 6 or a narrow width as shown in FIG. Then, the upper wall (103) bends downward to protrude, and when the width (W) becomes narrow, the upper wall (103) bulges upward.

A straightening machine (30) is arranged in front of the extruder (A), that is, on the side where the extruded material (100) travels. In this embodiment, as shown in FIG. 5, the straightening device (30) is disposed so as to be able to freely contact and separate from the left and right side walls (102) and (102) of the extruded material (100) and can move up and down. The right and left straightening rolls (32a) and (32a), and the upper straightening roll (32b) which is arranged above and below the upper wall (103) so as to be able to freely move toward and away from the upper wall (32b) are used. . These straightening rolls are driven by a driving device. When the width (W) of the extruded material (100) is wide as shown in FIG. 6, the right and left straightening rolls (32a) and (32a) are connected to the left and right side walls (102). )
By applying a pressing force by pressing against the (102), the spread of the left and right side walls (102) and (102) is corrected. As the left and right side walls are pressed, the upper wall (103) inevitably receives a force in the upward bulging direction, and the bending is healed. Conversely, when the width (W) is narrow as shown in FIG. 7, the upper straightening roll (32b) is pressed against the upper wall (103) to correct the bulge. The left and right side walls (102) and (102) inevitably receive a force in the spreading direction with the pressing of the upper wall, and the narrowing is healed to a predetermined size.

Shaping by the straightening machine (30) is controlled by an automatic shaping device shown in FIG. That is, in FIG. 1, reference numeral (20) denotes a dimension measuring device for measuring the width (W) of the extruded material (100) immediately after extrusion. This dimension measuring device (20)
Comprises a distance measuring sensor (21), a distance calculating device (22), and a dimension calculating device (23). As for the distance measuring sensor (21), a plurality of sets arranged in parallel for performing multi-point measurement are taken as one set, and a total of four sets are provided as shown in FIGS. 2 and 3 as shown in FIG. 2 and FIG. The extruded material passing hole (10a) of (10) is opposed to each other at a position equally divided into four parts on the inner circumference with the front end facing the passing hole. Of course, the arrangement of the sensors is not limited to this, and the same measurement can be performed, for example, by scanning a pair of opposed sensors in the width direction of the extruded material. Each sensor (21)
Is a non-contact type using laser light, has a built-in light emitting and receiving device (not shown), and emits laser light (25) from the light emitting device to the extruded material (100) as shown in FIG. Irradiated and reflected laser light is received by a light receiver. Each sensor (21) is cooled down to about 40 ° C or lower by covering it with a cooling jacket (21a) to prevent temperature rise due to heat radiation from the extruded material (100). It is covered with a highly reflective metal cover (21b) in which slits for projection and reception are formed.

On the other hand, the distance calculation device (22) calculates the distance between each sensor (21) and the laser light irradiation surface of the extruded material (100) from the time difference between the light emission and the light reception of the distance measurement sensor (21). Is what you do. Also, dimension calculation device (23)
Calculates the width (W) of the extruded material (100) by calculating from the distance between each sensor (21) and the extruded material (100) calculated by the distance calculating device (22).

(40) shown in FIG. 1 is a comparison device. Comparison device (4
0) is the extruded material (1) calculated by the dimension calculation device (23).
The width (W) of (00) is compared with a reference dimension based on, for example, JIS stored in the storage device (50) in advance, and a correction signal corresponding to the comparison result is output.

(60) is a straightening device control device, and the comparison device (40)
Based on the correction signal from the controller, the correction roll including the pressing position and the pressing force of the extruded material by the correction rolls (32a) and (32b) is controlled to an optimum value via the correction roll driving device (31). This control is performed based on the data in which the relationship between the difference between the measured value of the width (W) of the extruded material (100) and the reference dimension and the amount of correction by the straightener is grasped in advance. .

The distance calculation device (22) and the dimension calculation device (2
3), the comparison device (40), the storage device (50), and the correction device control device (60) are constituted by a computer (70) in this embodiment.

Next, the operation of the illustrated automatic shape control device will be described with reference to the flowchart of FIG.

After loading the billet (2) into the container (3), the ram (1) is driven forward to push the die (4) through the extrusion hole (4a).
And extruded into extruded material (100). When the extruded material (100) reaches the position where the sensor (21) is disposed as the extrusion proceeds, the sensor (21) is activated (step in FIG. 4), and the distance calculating device (22) is connected to each sensor (21). The distance from the extruded material (100) is calculated (step). Based on the result, the width (W) of the extruded material (100) is calculated by the dimension calculating device (23) (step). Next, the result of calculation by the dimension calculating device (23) and the reference
0) (step), and the comparing device (40) outputs a correction signal. Based on this signal, the straightening machine control device (60) controls the straightening rolls (32a) and (32b) via the straightening roll driving device (31) (step). When reached, the straightening rolls (32a) (32b) operate to match the width (W) of the extruded material (100) to the reference dimensions (step). Specifically, when the width (W) is larger than the reference dimension, the sixth
As shown in the figure, the right and left straightening rolls (32a) and (32b) are operated to suppress the spread of the left and right side walls (102) and (102) of the extruded material to a reference size. As the left and right side walls (102) and (102) are pressed, the upper wall (103) is inevitably subjected to a force in the upward bulging direction, and the bending thereof also subsides to form an extruded material having a desired shape. vice versa,
When the width (W) is smaller than the reference size, the upper straightening roll (32b) is actuated as shown in FIG. 7 to suppress the bulge of the upper wall (103) of the extruded material (100). With the holding of the upper wall (103), the right and left side walls (102) and (102) inevitably receive a force in the spreading direction, so that the width (W) matches the reference dimension,
The extruded material has the desired shape. By continuously repeating the above operation, the width (W) of the extruded material (100) is continuously monitored, and based on the result, the straightening machine (30) is controlled to maintain the width (W) at the reference size. It is.

Incidentally, the aluminum extruded material shown in FIG. 5 having a reference width (W) of 150 mm was cut into a length of 6 m after extrusion and straightened by a conventional method, and to a length of 30 m using the automatic shaping apparatus of the above embodiment. When the width (W) of each part of the extruded material was measured before and after the extrusion, the results were as shown in Table 1 below.

As is clear from the results in Table 1, it can be seen that the product of the present invention has a width almost equal to the reference size.

In the above embodiment, the dimension measuring device (20)
And a pair of straighteners (30) are shown, but in order to obtain a more accurate dimensional shape, as shown in FIG.
After the straightening machine (30), another distance measuring sensor (21 ') and a straightening machine (30') are sequentially provided on the extruded material advancing side, and after the first-stage straightening, the dimensions are further measured and straightening is performed. It is good to do. Further, in the above embodiment, the extruded material (100) was formed in a cross-sectional shape, the width (W) was measured, and the straightening machine was controlled so as to conform to the reference dimension. The correction site or the correction site is not limited to this. Further, the straightening machine is not limited to the straightening roll type.

Effect of the Invention As described above, the present invention measures the dimensions of a predetermined portion of an extruded material after extrusion, and controls a straightening machine based on the result to automatically adjust the extruded material such as aluminum to a desired shape. Therefore, the correction can be performed reliably and uniformly without depending on the experience and intuition of the operator. Moreover, since the straightening process is performed simultaneously in the extrusion process in addition to performing the automatic shaping without requiring any manpower, the shaping time can be shortened, the work efficiency can be improved, and the cost can be reduced. . Further, since there is no need to transport the extruded material to the straightening machine, there is no danger that the extruded material will have a transportation flaw, and the stock yard may not need to be used.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of an automatic shaping device according to the present invention, FIG. 2 is a longitudinal sectional view of an extruder, FIG. 3 is a schematic explanatory diagram showing a relationship between a dimension measuring sensor and an extruded material, 4th
Fig. 5 is a flow chart for explaining the operation of the automatic shaping apparatus shown in Fig. 1, Fig. 5 is a sectional view showing the relationship between the extruded aluminum material and the straightening roll applied to the embodiment, and Fig. 6 shows the width of the extruded material. FIG. 7 is a cross-sectional view showing a correction method for a wide case, and FIG. 7 is a cross-sectional view showing a correction method for a narrow case. (A) ... extruder, (4) ... die, (4a) ... die hole, (20) ... dimension measuring device, (21) ... distance measuring sensor, (22) ... distance calculating device , (23)… dimension calculation device, (30)… straightening machine, (40)… comparison device, (6
0) ... straightening machine control device, (100) ... extruded material, (W) ...
…width.

Continuation of the front page (56) References JP-A-60-234821 (JP, A) JP-A-54-151546 (JP, A) JP-A-60-40614 (JP, A) JP-B-61-5805 (JP) , B2)

Claims (2)

(57) [Claims] 1. A dimension measuring device (20) for measuring a dimension of a predetermined portion of an extruded material continuously extruded from an extrusion hole (4a) of a die (4), and a dimension obtained by the dimension measuring device. (40) which outputs a correction signal according to the result of comparison by comparing the measured value with the reference size, and a straightening machine arranged on the extruded material advancing side from the size measurement position by the size measurement device (20). (30) and a straightening machine control device (60) that controls the straightening amount by the straightening machine (30) in accordance with the straightening signal from the comparison device (40) and matches the size of the extruded material to the reference size. An automatic extruded material shaping device, comprising: 2. A method for measuring the dimensions of a predetermined portion of an extruded material continuously extruded from an extrusion hole (4a) of a die (4), comparing the measured dimensions with a reference dimension, A method for automatically shaping an extruded material, wherein the extruded material is subjected to a correction according to a comparison result on an advancing side of the extruded material so that a size of the extruded material matches a reference size.