JPH06328146A - Method and device for producing long size material with irregular shaped section - Google Patents

Abstract

PURPOSE:To curtail the number of processes, and to improve productivity by supplying a long-length work with a definite section common part and a indefinite section corresponding part to plural forming rolls, moving and controlling the position of each forming roll in its axial center direction corresponding to the change of the width of the indefinite section corresponding part. CONSTITUTION:A definite section forming roll group 73 performs the bending work of a strip material S sent by unwinding from an uncoiler. The definite section forming group 73 is constituted by arranging plural roll forming devices 83A to 83D in a straight line. A width change working device 73 removes and works an edge side of the other side of a work W4, corresponding to the change of the sectional shape of the longitudinal direction of a long size material. An indefinite section forming roll group 77 forms an indefinite section corresponding part in a work W5 after cutting and removing a scrap SC by a width working device 75 to an indefinite section corresponding part. The indefinite section forming roll group 77 is constituted by arranging rolls 85, 87 and 89 in a straight line. These forming rolls can be controlled to move in a direction perpendicular to the moving direction of the work W5 to allow to easily correspond to the change state of the width of the long size material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a long material having an irregular cross-sectional shape having different cross-sectional shapes in the longitudinal direction.

[0002]

2. Description of the Related Art Examples of long members having different longitudinal cross-sectional shapes include automobile moldings and sashes (door frames).

The above-mentioned molding mainly has a decorative function and a function of hiding and uncovering a sheet metal structure terminal and a seam and pressing other parts, but it may be attached only for decoration.

There are various types of moldings for automobiles. Since the decorative function of the molding is important for expressing the highness and the sense of quality, it is desired that the molding has different transverse cross-sectional shapes in the longitudinal direction in order to have the main function.

[0005]

It is conceivable that a long material having an irregular cross-sectional shape, which has a different cross-sectional shape in the longitudinal direction, such as a molding for an automobile, is formed by using a press machine or the like. If the cross-sectional shape is a relatively simple shape, it may be possible to perform the forming process in one step. However, in general, the cross-sectional shape is complicated, and molding processing in multiple steps is required.

Therefore, in the past, this multiple steps would increase the number of man-hours and would hinder the improvement of productivity.

Further, when the cross-sectional shape of a long material is complicated, members having different cross-sectional shapes may be formed by different processes, and then may be connected by spot welding or the like in a state of being misaligned. However, there is a problem in that the productivity and the manufacturing cost are likely to increase, and there is a problem in that distortion is likely to occur during the welding.

Therefore, the present invention provides a method and apparatus for manufacturing a long material having a modified cross-sectional shape which is integrally continuous in the width direction and the longitudinal direction without having a connecting portion such as spot welding. Is what you are trying to do.

As prior art examples considered to be related to the present invention, for example, Japanese Patent Publication No. 2-36689, Japanese Patent Publication No. 2-35605, Japanese Patent Publication No. 2-31609,
JP-A-59-183936, JP-B-3-3525
Japanese Patent Publication No. 62-179119 and the like.

[0010]

In order to achieve the above-mentioned object, the manufacturing method according to the present invention is made of a plastically deformable material and has a long cross-sectional shape with a different cross-sectional shape in the longitudinal direction. As a method of manufacturing a material, it corresponds to a constant cross-section common portion whose cross-sectional shape is substantially constant over the entire length of a long material and a substantially plate-shaped non-uniform cross-section common portion whose cross-sectional shape changes in the longitudinal direction. A long work having an indeterminate cross-section corresponding portion whose width changes is supplied to a plurality of forming rolls linearly arranged, and the peripheral speed of the plurality of forming rolls is rotated substantially the same and the indefinite An irregular cross-sectional shape in which the position of each forming roll is controlled to move in the axial direction according to the change in the width of the corresponding section, and the section corresponding to the undefined section is formed into a common section of undefined sections by a plurality of forming rolls. Is a method for manufacturing a long material.

Further, the present invention is a method for manufacturing a long member having a modified cross-sectional shape, which has a step of removing a part of a long work along the longitudinal direction of the material to form a portion corresponding to an irregular cross section as an upstream step. .

Further, a process of forming a constant cross section common part in advance by passing through a constant cross section forming roll group for forming a constant cross section common part using a strip material or a strip material having a constant width as a work, This is a method for manufacturing a long material having a modified cross-sectional shape, which is provided as an upstream step from the step of forming.

Further, when a common portion of indefinite cross section is formed on a long work and then the work is cut into a predetermined length, a predetermined position of the work is detected by a detector, and a detection signal detected by the detector is detected. Based on the above, it is a method for manufacturing a long material having a modified cross-sectional shape, which comprises a step of operating a cutting machine to cut the work.

The manufacturing apparatus according to the present invention is an apparatus for manufacturing a long material having a modified cross-sectional shape having different cross-sectional shapes in the longitudinal direction, and the cross-sectional shape is substantially constant over the entire length of the long material. Receiving and guiding the constant cross-section common part of the work having the constant cross-section common part and the indefinite cross-section corresponding part whose width changes corresponding to the substantially plate-shaped non-uniform cross-section common part whose cross-sectional shape changes in the longitudinal direction. A guide roll provided with a circumferential groove, and a plurality of roll devices provided with a forming roll for forming the portion corresponding to the indefinite cross section of the work into a common portion of the indefinite cross section are arranged linearly to form an indefinite cross section forming roll group. Configured
The position of the forming roll in each roll device is provided so as to be movable and controllable in the axial direction of the work corresponding to the change in the width of the portion corresponding to the indefinite cross section.

Further, a width changing processing device for removing a part of a long material along the longitudinal direction of the material to form a portion corresponding to an irregular cross section is provided on the upstream side of the irregular cross section forming roll group. .

Further, it is a cross-sectional shape having a constant cross-section common portion whose cross-sectional shape is substantially constant over the entire length in the longitudinal direction of the long material and an indefinite cross-section common portion whose cross-sectional shape changes in the longitudinal direction. However, the constant cross section forming roll group for forming and processing the above-mentioned constant cross section common part of the long material is arranged on the upstream side of the non-uniform cross section forming roll group for forming and processing the common constant cross section.

[0017]

In the above structure, when a work having a constant cross-section common portion and an indefinite cross-section corresponding portion is supplied to a plurality of forming rolls linearly arranged, the width of the indefinite cross-section corresponding portion of the work is changed. The position of each forming roll is controlled to move in the axial direction, and the portion corresponding to the indefinite cross section of the work is formed.

When forming a part corresponding to an indefinite cross section of a work, the part having a constant cross section of the work is guided by the guide rolls, so that the forming of the part corresponding to the indefinite cross section is continued without deforming the part having a constant cross section. Can be done on a regular basis.

Therefore, it is possible to improve the productivity of the long material having the irregular cross section.

[0020]

Example: A long member having an irregular cross-sectional shape having a different cross-sectional shape in the longitudinal direction may be used as it is, but generally, it is bent by a stretch bend or the like, for example, for an automobile. Often used as a molding.

As the above-mentioned molding for automobiles,
As shown in FIGS. 1 and 2, the drip molding 1,
There are wheel arch molding 3, window moldings 5A and 5B, body side molding 7, waist molding 9, and the like.

The drip molding 1 includes a roof-corresponding portion 1A (hereinafter simply referred to as "roof portion"), a front pillar-corresponding portion 1B (hereinafter simply referred to as "front portion"), and a rear pillar-corresponding portion 1C (hereinafter simply referred to as "rear portion"). ")) And. The roof portion 1A,
The front portion 1B and the rear portion 1C are formed in a straight line shape or an arc shape having an extremely large radius, and the roof portion 1A and the front portion 1B and the rear portion 1C are formed in an arc shape relatively smaller than other portions. They are connected by parts 1D and 1E.

The drip molding 1 having the above structure is
The roof portion 1A, the front portion 1B, the rear portion 1C, and the arc-shaped portions 1D and 1E have different cross-sectional shapes. In addition, drip molding 1
The combination of the roof portion 1A and the front portion 1B or the roof portion 1A and the rear portion 1C is also possible depending on the styling of the vehicle body.

Also, each molding 3, 5A, 5B,
Also in Nos. 7 and 9, there are two or more portions having different transverse cross-sectional shapes in the longitudinal direction. In FIG. 2, the window moldings 5A and 5B are different window moldings together, and one window molding 5A shows a case where the width changes when viewed from the front side, and the other window molding 5A. 5B shows a case where the width when viewed from the front side is constant, but the width changes when viewed from the side surface.

As a type of molding for automobiles, a molding having the same cross-sectional shape in the longitudinal direction is generally used, but as already understood, those having different cross-sectional shapes in the longitudinal direction are also desired.

Therefore, the drip molding 1 will be described in more detail as a molding having a different cross-sectional shape in the longitudinal direction. The drip molding 1 has a drip molding 11A having the structure shown in FIG. 3 and a drip molding 11A having the structure shown in FIG. There is a drip molding 11B configured.

In the drip molding 11A, the longitudinal cross-sectional shape of the roof portion 1A is constant, and the longitudinal cross-sectional shapes of the front portion 1B and the rear portion 1C are constant. And
The cross-sectional shape in the longitudinal direction of the arc-shaped portions 1D and 1E changes and is not constant.

The drip molding 11A is manufactured by bending the long material 13 having the structure shown in FIG. 4 by a stretch bend or the like.

The long member 13 is made of a metallic material such as stainless steel or aluminum alloy having a bright surface, a synthetic resin, or a composite material thereof, and the like.
The first, second, and third constant width portions 15, 17, and 19 having constant longitudinal cross-sectional shapes, and the first and second unfixed width portions 21 having variable longitudinal cross-sectional shapes. And 23. The constant width portions 15, 17 and 19 and the indefinite width portions 21 and 23 are integrally continuous without a connecting portion such as a welded portion.

The first, second and third constant width portions 15, 17 and 19 of the elongated member 13 are the drip molding 1 described above.
1A corresponds to the roof portion 1A, the front portion 1B, and the rear portion 1C, respectively, and the first and second indeterminate width portions 2
Reference numerals 1 and 23 correspond to the arc-shaped portions 1D and 1E, respectively. The long member 13 having the above-described configuration is bent in the direction of arrow A in FIG. 3, and the first, second, and third constant width portions 15, 1 are formed.
7 and 19 have large curvatures R3, R4 and R5 respectively, and the first and second indefinite width portions 21 and 23 have small curvatures R respectively.
The drip molding 11A is formed by forming arcuate shapes in 1 and R2. In addition,
The large curvatures R3, R4, R5 may be infinitely curved, that is, substantially linear, depending on the styling of the automobile.

The first and second constant width portions 1 of the elongated member 13
5, 17 and the first cross-sectional shape of the first variable width portion 21 are
The shapes are different as shown in FIGS. The cross-sectional shape of the third constant width portion 19 may be the same as or different from the cross-sectional shape of the second constant width portion 17,
This is mainly selected by the styling of the car.
The same applies to the second indeterminate width portion 23 and the first indeterminate width portion.

Referring to FIGS. 5, 6 and 7, the cross-sectional shape of each part of the long member 13 is, for example, a mounting part 25 which is mounted to a mounted part such as a vehicle body panel of an automobile with a screw or the like, and an external part after mounting. It can be divided into a design portion 27 that is exposed and visible.

The mounting portion 25 can be formed in any cross-sectional shape such as a shape for mounting the weather strip WS. The cross-sectional shape of the mounting portion 25 is substantially constant and common over the entire length of the long member 13, and since it is integrally continuous in the longitudinal direction, the cross-sectional shape is constant and common. It is included in the constant cross section common portion 29.

Although the cross section of the design portion 27 continuously changes in the range of the indefinite width portions 21 and 23 along the longitudinal direction, the cross section has a substantially similar shape and is long. Since it is integrally continuous in the direction, the design portion 27
Is included in the range of the common section 31 of indefinite cross section. Depending on the styling requirements, a stepped portion may be formed on the design portion 27 as shown by the chain double-dashed line 27A, and a coloring treatment layer such as painting may be formed on a part or all of the outer surface of the design portion 27. There are also things to do.

Further, the drip molding 11B shown in FIG. 8 is different from the drip molding 11A in that the front portion 1B and the rear portion 1C have continuously different transverse sectional shapes in the longitudinal direction. The drip molding 11B is manufactured by bending the long material 33 as shown in FIG. 9 in the same manner as the drip molding 11A described above.

The long member 33 has a constant width portion 35 and first and second inconstant width portions 37 and 39, and one cross sectional shape of the constant width portion 35 and the first inconstant width portion 37 is 11 and 1
0, each having a mounting portion 41 and a design portion 43, the mounting portion 41 is included in the range of the constant cross section common portion 45, and the design portion 43 is included in the range of the unfixed cross section common portion 47. ing.

FIG. 12 is a perspective view showing a long member 51 whose longitudinal cross-sectional shape is similar to that of the long member 33.
Like the long member 33, the long member 51 has a constant cross section common portion 53 and an indefinite cross section common portion 55 in a cross section.
In the longitudinal direction, two constant width portions L1 and L3 and one unfixed width portion L2 are provided.

More specifically, the constant cross section common portion 53.
Has a cross-sectional shape of a mode in which a flange portion 61 serving as a mounting portion is provided at one side edge of the design portion 57 included in the range of the indefinite cross-section common portion 55 via an arcuate portion 59.
The common section 55 of indefinite cross section has a cross-sectional shape of an aspect in which an arcuate portion 63 is provided on the other end edge of the design portion 57, and a short folded flange portion 65 is continuous with the arcuate portion 63.

Next, when the long member 51 is viewed in the longitudinal direction, the regions LA and LB and the regions L1, L2 and L at both ends are obtained.
It can be divided into three. The area L1 is the width of the space between the arcuate portion 59 and the arcuate portion 63, that is, the design portion 5
The width of 7 is WD, and the width of the region L3 is larger than the width WD. The area L2 is the area L1.
The width WD gradually increases from the side toward the region L3. The areas LA and LB are portions to be clamped and fixed by a clamp or a chuck provided in the stretch bender or the like when bending is performed by, for example, a stretch bend or the like.

Regions L1 and L3 in the long member 51
Is a constant width portion having a constant transverse cross-sectional shape in the longitudinal direction. The region L2 is an inconstant width portion whose cross-sectional shape in the longitudinal direction is not constant but gradually changes.

It should be noted that at the boundary portion where one end of the constant width portion in the longitudinal direction transitions to the unfixed width portion (or the boundary portion where one end of the unfixed width portion in the longitudinal direction transitions to the constant width portion), r6 to r6 in FIG.
As shown in FIG. 9, it is preferable to perform molding processing for each curvature.

This is for reducing the concentration of stress on the formed boundary portion in a product which needs to be bent later so as to prevent buckling or damage.

The constant width portions (regions L1 and L3) and the inconstant width portion (region L2) are continuously formed without a connecting portion by welding or the like. Note that reference numerals h1 to h5
Is a long hole for attaching the elongated member 51 to a body to be attached with a screw or the like, and is provided with a predetermined gap along the longitudinal direction, which may be a notch or the like.

In the present embodiment, the long material 51 is continuously formed from a strip material wound in a coil shape, and then is formed into a predetermined length (LA + L1 + L) in the final stage.
2 + L3 + LB).

In summary of the manufacturing method, as shown in FIG. 15, the strip material S wound in a coil shape is unwound and transferred in the longitudinal direction. Are passed through the first forming roll group 73 and sequentially bent (W1, W2, W3, W
4). Next, a width changing processing device 75 such as a slitter roll
By appropriately cutting the other side edge side of the work W4 formed by processing the constant section common section 53 to one side edge side along the longitudinal direction, as shown in FIGS. The work W5 having the indefinite cross-section corresponding portion 67 whose width is changed in accordance with the change of is formed. After that, the side edges of the indefinite cross-section corresponding portion 67 are formed into a constant width along the processing line 69 by the second forming roll group 77, and the design portion 57 is formed. Then, the long member 51 is manufactured by cutting it into a predetermined size.

In the formation of the work W5, the boundary portion where one end of the constant end portion in the longitudinal direction transitions to the indefinite end portion (or the boundary portion where one end of the indefinite end portion transitions to the constant end portion in the longitudinal direction) is shown in FIG. , 14 r6 'to 9', respectively, are formed into a curvature, and thereafter, the second forming roll group 77 forms the respective curvatures as shown in r6 to 9 in FIG.

As shown in FIG. 15, in the manufacturing apparatus according to the present embodiment, the constant cross-section common portion 53 is formed on one side edge side of the strip material S that is rewound from the uncoiler 71 and transported in the longitudinal direction. A constant cross-section forming roll group 73 is provided as one forming roll group.

Downstream of the constant cross section forming roll group 73, the constant cross section forming roll group 73 processes the constant cross section common section 53 from the strip material S to one side edge side, and the unfixed section common section of the work W4. The other side edge side of the portion to be 55 is removed by an appropriate means along the longitudinal direction to have a predetermined shape, and the width is changed corresponding to the change of the cross-sectional shape of the common section 55 of indefinite section. A width change processing device 75 that forms the portion 67 is arranged.

Further, on the downstream side of the width change machining device 75, the side edge side of the indefinite cross-section corresponding portion 67 in the work W5 after the indefinite cross-section corresponding portion 67 is machined is formed along the machining line 69. An indefinite cross-section forming roll group 77 is arranged as a second forming roll group for processing and designing the design part 57 to form the indefinite cross-section common part 55.

Further, on the downstream side of the irregular cross section forming roll group 77, the work W8 after the constant cross section common part 53 and the irregular cross section common part 55 are formed is cut into the long material 51 having a predetermined size. A cutting device 79 for cutting is arranged.

The constant cross-section forming roll group 73 performs a forming process of bending along the longitudinal direction of the strip material S stepwise on one flat side edge of the strip material S rewound from the uncoiler 71 and fed. Then, the arc-shaped portion 59 and the flange portion 61 included in the constant cross-section common portion 53 of the elongated member 51 are formed.

The constant cross-section forming roll group 73 is formed by arranging a plurality of roll forming devices 83A to 83D having a pair of upper and lower forming rolls 81U and 81L in a straight line.

The number of the plurality of roll forming devices 83A to 83D in the constant section forming roll group 73 is determined by the bending rate of the portion to be roll formed, the complexity of the cross sectional shape of the portion to be roll formed, and the like. It is a thing. Generally, the more complicated the cross-sectional shape, the more rolls are required. The plurality of roll forming devices 83A to 8
The diameters of the forming rolls 81U and 81L in 3D are almost the same, and the peripheral speeds thereof are almost the same. Here, the diameter of the forming roll is defined as an imaginary pass line position at an intermediate position from the axis of the upper and lower forming rolls 81U and 81L, and a diameter of the roll is twice the radius from the axis to the pass line. There is. After that,
The diameter of the forming roll is used in the above meaning.

When the strip material S is roll-formed, the strip material S and the workpieces W1 to W4 also extend in the longitudinal direction, albeit a slight amount. Therefore, in order to absorb the extension, the rotation of each forming roll is performed. It is desirable to keep the angular velocities the same and make the diameter of the forming rolls on the downstream side slightly larger, thereby making the peripheral velocity slightly larger on the downstream side. That is, the diameters d1 to d of the forming rolls 83A to 83D
It is desirable that 4 holds the relationship of d4>d3>d2> d1. Most preferably, the diameter of the forming roll is selected so that the strip material S or the work W is slightly tensioned between the forming rolls.

The forming rolls 83A to 83D are
The roll forming apparatus 83A can be easily implemented by those skilled in the art based on a general roll forming apparatus.
The description of more details about -83D is omitted.

At this point, the common section of the work W4 having the constant cross section may have the same cross section shape as that of the final elongated material, or when a complicated cross section shape is required,
There may be a case where a constant cross section forming roll group is further arranged downstream of the indefinite cross section forming roll group 77 to perform additional bending.

The width changing processing device 75 corresponds to the change in the cross-sectional shape of the long material 51 in the longitudinal direction, and the work W4.
In this embodiment, the work W4 is sheared by a slitter roll including a pair of upper roll 75U and lower roll 75L.

More specifically, as shown in FIG. 17, the upper and lower rolls 75U and 75L of the width changing processing device (slitter roll) 75 are rotatably supported at both ends by a roll stand (not shown). They are attached to the upper and lower roll shafts 75S, respectively, and are configured to rotate in the opposite directions at the same rotation speed via gears (not shown) provided on the upper and lower roll shafts 75S, for example.

Then, on the peripheral surface of the upper roll 75U,
The arc-shaped portion 59 formed on one side edge of the work W4.
And the constant cross section common portion 5 including the flange portion 61.
A peripheral groove 75G for receiving 3 is formed. Further, on the peripheral surface of the upper roll 75U, the other side edge side of the work W4,
A shearing blade 75B for shearing is formed so as to project so that the width changes in accordance with the change in the cross-sectional shape of the long member 51.

The shearing blade 75B is the region L of the long member 51.
The lengths of the outer circumferences of the portions of the work W4 that are sheared on the other edge side are equal to the lengths of the regions L1 and L3, respectively, and are formed in the circumferential direction intersecting the axis.
Further, the length of the outer circumference of the portion that shears the other side edge of the work W4 corresponding to the region L2 is equal to the length of the region L2, and is formed in a direction inclined with respect to the axis.

Further, at both ends of the upper roll 75U,
Flange 7 for restricting axial movement of lower roll 75L
5F is formed.

On the peripheral surface of the lower roll 75L, a clamping surface for clamping the work W4 is formed between the peripheral surface of the upper roll 75U and the peripheral surface of the upper roll 75U, and the work W4 cooperates with the shearing blade 75B. An engagement groove 75LG for shearing is formed.

The peripheral lengths of the upper and lower rolls 75U and 75L in the slitter roll 75 are formed to be substantially equal to the length (LA + L1 + L2 + L3 + LB) of the long member 51. Therefore, the slitter roll 75 is 1
When rotated, as shown in FIG. 13 and FIG.
As a result, the work W5 including the indefinite cross-section corresponding portion 67 whose width has changed in accordance with the change in the cross-sectional shape of the above is obtained. When using the slitter roll 75,
The entire length of the outer circumference is the length of the long material 51 (LA + L1 + L2
The diameter is preferably selected to be an integral multiple of + L3 + LB).

As can be understood from the above structure, by continuously rotating the slitter roll 75, the other side edge of the work W4 is continuously sheared to generate scrap SC, and at the same time, for manufacturing the long material 51. The works W5 are continuously obtained.

Here, since the work W4 fed into the width changing processing device 75 has the constant cross section common portion 53 already formed, its rigidity is larger than that in the state of the strip material S. When a part of the work W4 is removed, the constant cross-section common portion 53 can be used as a guide, and the work W4 can be prevented from being displaced in the width direction during the removal processing, which is preferable.

Incidentally, as an apparatus for processing the work W5 having a width changed in accordance with the change of the cross-sectional shape of the long member 51 in the longitudinal direction, instead of the slitter roll 75, a device shown in FIG.
As shown in FIG. 5, a laser beam processing head LH for irradiating the work W4 is provided with a processing device 75A that is movable in a direction preferably orthogonal to the transfer direction of the work W4. It is also possible to adopt a configuration in which the movement of the laser processing head LH is controlled in association with the movement to. Although not shown, a shearing tool such as a nibler can be used instead of the laser processing head LH.

The irregular section forming roll group 77 is for forming the irregular section corresponding portion 67 of the work W5 after the scrap SC is cut and removed by the width changing apparatus 75 into the irregular section common section 55, The first, second, and third forming rolls 85, 87, 89 are arranged linearly.

The number of forming rolls in the indefinite-section forming roll group 77 is the same as that of the constant-section forming roll group 73.
The number of forming rolls is determined by the size and complexity of the bending rate of the portion to be roll-formed, and in the present embodiment, the first to third forming rolls 85, 87, 89 are representative. It is illustrated in.

As shown in FIG. 19, the first forming roll 85 is arranged so as to face a guide roll 91 that holds and guides one side edge of the work W5, and constitutes a roll device as a whole. .

The guide roll 91 is provided with a roll stand 95 erected on a base 93. The roll stand 95 has upper and lower roll shafts 97U and 97L for supporting the upper and lower rolls 91U and 91L rotatably and mutually. It is supported by adjustable space and adjustable vertical position. On the peripheral surface of the upper roll 91U, the arc-shaped portion 59 and the flange portion 61 formed on one side edge side of the work W5.
A guide groove 91G for receiving and guiding is formed, and a sandwiching surface for sandwiching one side of the work W5 is formed on the peripheral surface of the lower roll 91L with the peripheral surface of the upper roll 91U.

Therefore, the one side edge of the work W5 is guided and supported by the guide roll 91 without being deformed.

The first forming roll 85 has the base 9
A movable roll stand 99 slidably supported by the roller 3 is provided.

More specifically, the guide portion 1 is provided on the base 93 in a direction orthogonal to the transfer direction of the work W5.
01 is provided, and a lower portion of the movable roll stand 99 guided by the guide portion 101 and a ball screw 103 rotatably provided on the guide portion 101 are movably screwed together. A servo motor M1 is interlocked with the ball screw 103 to control the moving position of the movable roll stand 99.

The movable roll stand 99 has upper and lower rolls 8 for forming the other side edge of the work W5.
Upper and lower roll shafts 105U, 10 supporting 5U, 85L
5L is rotatably supported so as to be adjustable in space and adjustable in vertical position, and is linked to a rotary drive device (not shown).

The above-mentioned upper roll 85U and the lower roll 85L
On the peripheral surface of the workpiece W5, processing surfaces 85UF and 85LF for slightly bending the other side edge of the work W5 are formed so as to face each other and be inclined at a predetermined angle with respect to the axis of the roll (85U, 85L). I am doing it. A flange 85F is formed on the peripheral surface of the upper roll 85U, and a peripheral groove 85G with which the flange 85F is engaged is formed on the peripheral surface of the lower roll 85L. Therefore, the upper and lower rolls 85U and 85L are regulated in the axial direction, and the positional relationship in the axial direction is always kept constant.

As described above, the boundary portion where the fixed end portion of the work W5 shifts from one end in the longitudinal direction to the indefinite end portion (or the boundary portion where one end in the longitudinal direction of the indefinite end portion transitions to the fixed end portion). Then, as shown by r6 'to 9'in FIGS. 13 and 14, it is preferable to set the forming peripheral surface of the forming roll so as to form each with a curvature. By having such a shape, as an advantage during processing, the work is less likely to come off the forming roll when the boundary portion of the work passes between the forming rolls later, and the processed work is When handling or bending the axis, excessive bending stress is prevented from concentrating on this boundary portion, so that undesired bending is less likely to occur.

The upper and lower roll shafts 105U and 105L are the upper and lower roll shafts 97U and 97L of the guide roll 91.
The roll shafts 97U, 105L are provided in the engagement holes 105H provided at the shaft centers of the roll shafts 105U, 105L.
A guide pin 107 provided at the tip of 97L is slidably fitted.

Therefore, the upper and lower roll shafts 97U and 97L of the guide roll 91 and the upper and lower roll shafts 105U and 105L of the forming roll 85 are formed by the guide pins 107.
Both sides are supported by the interposition.

With the above structure, the forming roll 85 is moved to the work W5 by appropriately controlling and driving the servomotor M1.
The movement can be controlled in a direction orthogonal to the movement direction of the. That is, the position of the forming roll 85 is set to the work W5.
The movement can be controlled in the axial direction corresponding to the change in the width of the indefinite cross-section corresponding portion in, and the change in the width of the work W5 can be easily associated.

The structure of the second and third forming rolls 87, 89 is similar to that of the first forming roll 85, and the movement control of the works W6, W7 in the direction orthogonal to the transfer direction is performed. Is individually performed by the control device 109 (see FIG. 16) such as a computer.

The second and third forming rolls 87 and 89
Since the parts formed by the first forming roll 85 are sequentially processed, the shapes of the respective processed surfaces are naturally different, but the other configurations are the same. Therefore, the first, second and third forming rolls 85, 8
20 and 21 show the processing state by 7, 89, the reference numeral "85" of the first forming roll 85 is attached to the portion having the same function and the reference numeral "8" showing the second and third forming rolls is shown.
The second and the third are displayed instead of 7 ”and“ 89 ”.
Detailed description of the forming rolls 87 and 89 will be omitted.

The state shown in FIG. 20 is a case where the portion corresponding to the narrow portion (the portion of the region L1) of the long material 51 is formed, and the guide roll 91 and the first, second, and third forming portions are formed. The rolls 85, 87, 89 are in close proximity.

FIG. 21 shows a case where the portion corresponding to the wide region L3 of the long material 51 is formed, and the guide roll 91 and the forming rolls 85, 87 and 89 are largely separated from each other.

Area L2 between area L1 and area L3
When performing the forming process, the servomotors M1 of the forming rolls 85, 87 and 89 are individually controlled in accordance with the change in the width of the region L2, thereby gradually controlling the respective positions. It is something to do.

As already understood, the first, second and third
Forming surfaces 85U of the forming rolls 85, 87, 89 of
F, 85LF: 87UF, 87LF: 89UF, 89L
F is for sequentially forming the common section 55 of the indefinite cross section of the long member 51.

The cutting device 79 uses the forming rolls 8
The work W8 after being shaped and processed through 5, 87, 89 is cut according to the length of the long material 51, and for example, a shearing die, a disk cutter, a metal saw, a laser processing machine, or the like is appropriately used. It consists of a cutting mechanism.

The work W is cut by the cutting device 79.
When cutting 8 is performed, a cutting position detector 111 is arranged on the upstream side of the cutting device 79, and a cutting position detection signal from this detector 111 is sent to a cutting position control device (not shown).
It is desirable that the cutting device 79 be operated under the control of the cutting position control device to cut the work W8.

As the cutting position detector 111, for example, a CCD camera for catching a change in the shape of the work W8 in relation to the cutting position of the work W8, or an appropriate mark such as a punch or a stamp preprinted on the work W8 is detected. Sensor,
Various sensors such as a magnetic sensor that magnetizes a part of the work W8 in relation to the cutting position and detects the magnetized position, and a feed amount sensor that contacts the work W8 and constantly detects the feed amount in relation to the cutting position are provided. Can be used.

Reference numeral 113 in FIG. 15 is a guide roll for guiding the work along the path line direction.

In the above structure, when the strip material S rewound from the uncoiler 71 is supplied to the constant cross section forming roll group 73, the constant cross section common portion 53 is formed on one side edge of the strip material S.

When the front end portion in the longitudinal direction of the work W4 after the above-mentioned constant cross section common portion 53 has been formed and processed is supplied in conformity with the reference point P0 of the roll 75U in the slitter roll 75, it is between the reference points P0 and P1. At work W
The scrap SC is cut and removed corresponding to the area LA in 5 (see FIGS. 14 and 15).

Then, the processing corresponding to the region L1 of the work W5 is performed from the point P1 to the point P2 of the roll 75U. Similarly, a region L2 is provided from the points P2 to P3, and a region L3 is provided from the points P3 to P4.
From the point P5 (P0) to, the portion corresponding to the region LB is processed.

That is, the roll 7 of the slitter roll 75
When 5U and 75L rotate once, the area LA of the work W5 →
The work W4 is slitted continuously in the order of L1 → L2 → L3 → LB → LA.

Work W5 subjected to the above slitting
Is continuously supplied to the first, second, and third forming rolls 85, 87, 89, and the forming surface provided for each forming roll 85, 87, 89 sequentially processes the common section 55 of indefinite cross section. Work pieces W6, W7, W8 with different cross-sectional shapes
And changes.

That is, when the work W5 is fed to the first forming roll 85, one side edge of the work W5 is sandwiched and guided by the guide roll 91, and the position of the first forming roll 85 is undefined. The movement of the cross-section corresponding portion 67 is controlled in the axial direction in accordance with the change in the width, and the other side edge of the work W5 is formed into a second work W6.
It is sequentially fed to the forming roll 87 and the third forming roll 89,
Similarly, the movement of the workpieces W7 and W8 is controlled in the axial direction.
Are sequentially molded. Then, when the detector 111 detects the cutting position of the work W8 after completion of the forming process or a mark or the like that is associated with the cutting position, the cutting position control device cuts immediately or after a lapse of a certain time or after feeding a certain size. The device 79 operates to cut the work W8, and cuts the long material 51 having a predetermined size.

When the cutting device 79 cuts the work W8, the transfer of the work W8 may be temporarily stopped. However, the cutting device 79
It is desirable that the workpiece W8 is cut while moving integrally with the workpiece 8.

As can be understood from the above, according to this embodiment, it is possible to continuously manufacture a long product whose transverse cross-sectional shape changes in the longitudinal direction, and it is possible to reduce man-hours by reducing the number of steps and productivity. Can be improved.

22 and 23 show a second embodiment of the first forming roll 85. The forming roll 85A according to the second embodiment has a shoe member 115 fixed to the upper part of the movable roll stand 99, and a rotation that horizontally presses the other side edge of the work W5 against the forming portion 115F of the shoe member 115. The roll 117 is used.

The rotating roll 117 has a molding processing portion 117F which presses the other side edge of the work W5 against the molding processing portion 115F of the shoe member 115 on the outer peripheral surface,
The rotation of the rotary roll 117 is performed by an appropriate motor (not shown).

The other constitution is the forming roll 85.
Since they are almost the same as above, the same reference numerals are given to the components having the same functions, and a more detailed description will be omitted.

Further, the second, third, ... Forming rolls located on the downstream side of the forming roll 85A are naturally different in the shape of the forming part 115F of the shoe member 115 and the forming part 117F of the rotary roll 117. The other configurations are the same. Therefore, the second
FIG. 24 shows, for example, the forming parts 115F and 117F of the forming rolls 85B, 85C and 85D.

Also in the second embodiment having the above structure,
The same effect as that of the first embodiment is obtained.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

For example, a cutter blade is provided on a part of the peripheral surface of the slitter roll 75 so that the slitter roll 75 is
The work W4 may be cut into a predetermined length each time the work W4 is rotated. In this case, the cutting device 79 and the detector 111 can be omitted.

In a separate process, an aluminum alloy extruder or strip material S having a constant cross section is subjected to a predetermined process in advance, and is cut into a predetermined length to process the work W5 in advance. It is also possible to adopt a configuration in which the work W5 cut into pieces is supplied to the forming roll 85. In this case, the slitter roll 5, the cutting device 17, the detector 111 and the like can be omitted.

[0106]

As will be understood from the above description of the embodiments, according to the present invention, when manufacturing a long material having a transverse cross-sectional shape that changes in the longitudinal direction, When a work whose width has changed in response to changes in the cross-sectional shape is supplied to a plurality of forming rolls and the forming process is performed sequentially, each forming roll is positioned at its axial center corresponding to the change in the width of the work. Since the forming process is performed while adjusting the movement in the direction, it is possible to continuously manufacture a long material whose longitudinal cross-sectional shape changes, and it is possible to reduce man-hours by reducing the number of steps and improve productivity. Can be achieved. Further, since it is possible to perform the forming process while adjusting the movement of each forming roll in the direction intersecting the transfer direction of the workpiece, it is possible to easily cope with the case where the width of the long material changes, for example. It is possible.

[Brief description of drawings]

FIG. 1 is an explanatory side view showing a case where a long material according to the present invention is used for molding an automobile.

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

FIG. 3 is an explanatory diagram of drip molding.

FIG. 4 is an explanatory view of the drip molding before axial bending.

5 is an enlarged sectional view taken along line 5-5 in FIG.

6 is an enlarged cross-sectional view taken along the line 6-6 in FIG.

7 is an enlarged sectional view taken along line 7-7 in FIG.

FIG. 8 is an explanatory diagram of drip molding.

FIG. 9 is an explanatory diagram of drip molding before axial bending.

10 is an enlarged sectional view taken along the line 10-10 in FIG.

11 is an enlarged cross-sectional view taken along the line 11-11 in FIG.

FIG. 12 is a perspective explanatory view of drip molding.

FIG. 13 is a perspective explanatory view of a material.

FIG. 14 is an explanatory plan view of the above.

FIG. 15 is an explanatory diagram schematically showing the overall configuration of the device according to the present embodiment.

FIG. 16 is an explanatory plan view of the above.

FIG. 17 is a sectional explanatory view of the slitter roll according to the present embodiment, and a part of the slitter roll is omitted.

FIG. 18 is an explanatory diagram of a cutting device that replaces a slitter roll.

FIG. 19 is a cross sectional view of the first forming roll, omitting a part.

FIG. 20 is an explanatory view showing a forming process sequence, (A) is a first forming roll, (B) is a second forming roll, and (C) is a forming process state of a narrow portion by a third forming roll. is there.

FIG. 21 is an explanatory diagram showing a molding processing state of a wide portion of the above.

FIG. 22 is a cross-sectional explanatory view showing a second embodiment of the forming roll, with a part omitted.

FIG. 23 is a plan explanatory view of a main portion of the above, and a part thereof is omitted.

FIG. 24 is an explanatory view showing a working state by the forming roll of the second embodiment, in which (A), (B), and (C) are respectively the second and the second.
It is explanatory drawing which shows the shaping | molding process state by the 3rd, 4th shaping | molding roll.

[Explanation of symbols]

 75 Slitter Roll 79 Cutting Device 85 First Forming Roll 87 Second Forming Roll 89 Third Forming Roll

Claims (8)

[Claims] 1. A method for producing a long material having a deformed cross-sectional shape, which is made of a plastically deformable material and has different cross-sectional shapes in the longitudinal direction, wherein the cross-sectional shape is substantially the entire length of the long material. A long workpiece having a constant constant cross-section common part and an indefinite cross-section corresponding part whose width changes corresponding to a substantially plate-like undefined cross-section common part whose cross-sectional shape changes in the longitudinal direction is arranged linearly. Was supplied to a plurality of forming rolls, the peripheral speed of the plurality of forming rolls is rotated substantially at the same time, and the position of each forming roll is set in the axial direction in accordance with the change in the width of the indefinite cross-section corresponding portion. A method of manufacturing a long material having a modified cross-sectional shape, characterized in that the portion corresponding to an indefinite cross section is formed into a common portion having an indefinite cross section by movement control and is formed by a plurality of forming rolls. 2. The deformed cross section according to claim 1, further comprising a step of removing a part of the long work along a longitudinal direction of the material to form an indefinite cross-section corresponding portion as an upstream step. A method for manufacturing a surface-shaped long material. 3. A step of forming a constant cross section common part in advance by passing a constant cross section forming roll group for forming a constant cross section common part using a strip material or a strip material having a constant width as a work. The method for producing a long material having a modified cross-sectional shape according to claim 1 or 2, characterized in that it is provided as an upstream step of the step of forming. 4. A detection signal detected by a detector when a predetermined position of the work is detected when the work is cut into a predetermined length after forming a common section of an indefinite cross section on a long work. The method for producing a long material having a modified cross-sectional shape according to any one of claims 1 to 3, further comprising the step of operating a cutting machine to cut the work based on the above. 5. An apparatus for producing a long material having a modified cross-sectional shape having different cross-sectional shapes in the longitudinal direction, the cross-sectional shape being substantially constant over the entire length of the long material. A guide having a circumferential groove for receiving and guiding the constant cross-section common part of a work having an indefinite cross-section corresponding part whose width changes corresponding to a substantially plate-like non-uniform cross-section common part whose cross-sectional shape changes in the longitudinal direction. A roll and a plurality of roll devices each of which is provided with a forming roll for forming the uncertain cross-section corresponding portion of the work into an uncertain cross-section common portion are arranged linearly to form an uncertain cross-section forming roll group. A long member having a modified cross-sectional shape, characterized in that the position of the forming roll in the roll device is provided so that the movement of the forming roll is controllable in the axial direction in accordance with the change in the width of the portion corresponding to the indefinite cross section Manufacturing equipment. 6. A width change processing device for removing a part of a long material along the longitudinal direction of the material to form a portion corresponding to an irregular cross section is provided on the upstream side of the irregular cross section forming roll group. The apparatus for manufacturing a long material having a modified cross-sectional shape according to claim 5. 7. The apparatus for manufacturing a long material having a modified cross-sectional shape according to claim 6, wherein the width change processing device is a shearing device or a fusing device. 8. A cross-sectional shape having a constant cross-section common portion whose cross-sectional shape is substantially constant over the entire length in the longitudinal direction of the long material and an indefinite cross-section common portion whose cross-sectional shape changes in the longitudinal direction. A constant-section forming roll group for forming and processing the constant-section common part of the long material is arranged upstream of an unfixed-section forming roll group for forming and processing the unfixed-section common part. 5. An apparatus for manufacturing a long material having a modified cross-sectional shape according to 5 or 6.