JPH10314848A - Roll forming machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a complicatedly shaped forming goods so that it is curved upward or downward in the longitudinal direction while the cross-section shape of a metal plate is changed continuously in the width direction. SOLUTION: A forming roll series 3 composed of plural numbers of forming rolls 31 , 32 , 33 , 34 , 35 , 36 is arranged so that pressing parts of forming rolls to form a metal plate P are curved upward toward the running direction of the metal plate P. Upper forming rolls and lower forming rolls composing a roll forming machine of this forming roll series 3 are respectively bi-sected to two moving external rolls at the intermediate part of the axial direction and these are made freely movable in the axial direction with external roll moving means composed of servo motors installed continuously to them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll forming machine for continuously cutting or bending a long metal plate,
In particular, a roll capable of forming a molded article having a complicated shape in which the width direction or the height of the metal plate material in the short direction, that is, the cross-sectional shape in the width direction continuously changes while the long direction is curved upward or downward. Related to a molding machine.

[0002]

2. Description of the Related Art In a roll forming machine, a long metal plate material is caused to travel between a pair of rotating rolls facing each other in a pressed state, so that a width diameter in a direction perpendicular to the traveling direction of the metal plate material is desired. The molded product can be manufactured continuously by cutting (slitting) to the developed width diameter of the molded product or by performing stepwise bending.

[0003]

In the above-mentioned conventional roll forming machine, although a molded article having a considerably complicated shape can be manufactured efficiently, the cross section of the metal plate in the width direction is always constant. Met. However, due to market demands, tapered molded products whose cross-sectional shape in the width direction changes continuously, molded products whose longitudinal direction is curved upward or downward, and products with complex shapes that combine these, There is a demand for forming by a roll forming machine without using a complicated and large-scale press die or the like.

Therefore, in the present invention, it is possible to form a molded product that can be tapered while continuously changing the cross-sectional shape in the width direction of the metal plate material and that has a longitudinal direction curved upward or downward. It is an object of the present invention to provide a roll forming machine capable of performing such a process.

[0005]

In order to achieve the above-mentioned object, a roll forming machine according to the present invention comprises an outer roll integrally rotatably driven around a pair of rotating shafts rotating opposite to each other. In a roll forming machine that continuously manufactures a molded product by running a long metal plate material in a press-contact state between a pair of formed forming rolls that are fitted and performing width cutting or bending, the forming roll is provided with A plurality of press-contact portions are continuously provided so as to be curved upward or downward in the traveling direction of the metal sheet material, and the exterior roll is divided into two portions at an intermediate portion in the axial direction, and at least one of the two is provided as a movable exterior roll. Along with being movable in the axial direction by the exterior roll moving means, the moving step of the metal sheet material is provided with a moving amount measuring means for measuring a moving amount of the metal sheet material in the running direction, and the moving amount measuring means and Between the mounting roll moving means, the measurement data from the moving amount measuring means and the set dimension data of the molding input to the control means in advance are calculated, and the exterior roll moving means is operated in accordance with the moving amount of the metal plate material. By providing control means for driving and moving the movable exterior roll in the axial direction, a molded product in which the longitudinal direction of the metal plate material is curved upward or downward while the cross-sectional shape perpendicular to the traveling direction continuously changes. It is characterized by doing.

Further, both of the two outer rolls may be movable outer rolls so as to be symmetrically movable in the axial direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic explanatory view showing a roll forming machine system according to the present invention. In FIG. Forming rolls 2 for slitting the metal plate material P, and a plurality of (10 in this embodiment) forming rolls 2 for sequentially bending the slitted metal plate material P over a plurality of stages.
Forming roll rows 3 composed of ₁ , 2 ₂ , 2 ₃ ... 2 ₁₀ are provided in a plurality (in the present embodiment, in order to bend the metal sheet material P bent by the forming roll row 2 in the longitudinal direction upward. 6-stage) forming rolls 3 ₁ , 3 ₂ , 3 ₃ , 3 ₄ , 3 ₅ , 3 ₆ are formed in such a manner that their press-contact portions are curved upward in the running direction of the metal plate material P. Column. Reference numeral 4 denotes a sensor for detecting a mark such as a hole or a mark formed in the metal plate material P at intervals of one length of the molded product in order to set a reference position in the molding. And is disposed for each forming roll, and functions as a component of a movement amount measuring means described later. Reference numeral 5 denotes a bed serving as a base of the roll forming machine.

2 and 3 are cross-sectional views of the main part of the roll forming machine 6 in the forming roll row 2 and the forming roll row 3, and FIG. 2 shows a state in which the forming width diameter of the forming roll is the smallest.
FIG. 3 shows a state where the forming width diameter of the forming roll is the largest. 7 is an upper forming roll for pressing the metal plate material P from above, 8 is a lower forming roll for pressing the metal plate material P from below, and the metal plate material P is a slight gap between the upper forming roll 7 and the lower forming roll 8. In the pressure-contact state from the near side to the back side toward the drawing, the cross-sectional shape in the width direction is formed into the shape of the gap.

The upper forming roll 7 has a rotary drive shaft 9 which is inserted right and left through the forming roll and is driven to rotate by a drive motor (not shown), a hollow shaft 10 fitted around the outer periphery thereof and movable in the axial direction, and a hollow shaft 10. And a movable exterior roll 12 fixedly fitted on the outer periphery of the rotary drive shaft 9 and movable in the axial direction fixedly fitted on the outer periphery of the rotary drive shaft 9. Similarly, the lower forming roll 8 is fitted and fixed on a rotation drive shaft 13 driven to rotate by the drive motor, a hollow shaft 14 fitted on the outer periphery thereof and movable in the axial direction, and an outer periphery of the hollow shaft 14. Moving exterior roll 15 and rotary drive shaft 1
3 and a movable exterior roll 16 which is fixedly fitted on the outer periphery of the outer roll 3 and is movable in the axial direction.

The hollow shafts 10, 14 for fixing the movable exterior rolls 11, 15 are supported by a stand 17 erected on the bed 5, and an exterior roll moving means (see FIG. (Not shown), it is possible to move in the axial direction together with the stand 17 from the state shown in FIG. 2 to the state shown in FIG. Moving exterior roll 12,1
The rotary drive shafts 9 and 13 for fixing the shaft 6 are supported by a stand 18 which is also erected on the bed 5.
By means of the exterior roll moving means connected to 8, it is possible to move axially from the state shown in FIG. 2 to the state shown in FIG. 3 together with the stand 18. However, in this embodiment,
Although not particularly shown, the stand 17 and the stand 18 are
Although it is structured to move left and right symmetrically in the axial direction by two exterior roll moving means, it may be configured to drive each stand (symmetrically or asymmetrically in the axial direction) using individual exterior roll moving means. .

A rectangular key (not shown) is protruded from an engagement portion between the rotary drive shafts 9 and 13 and the hollow shafts 10 and 14 in parallel with the shafts, and is fitted to the key. By hollowing a keyway (not shown) having a longer diameter than the key and engaging the keyway with the key, the hollow shafts 10, 14 can rotate the rotary drive shaft 9, 9.
13, it can move in the axial direction while rotating.

A moving amount measuring means 19 shown in FIG. 4 showing a flow chart of the roll forming machine system of the present invention is provided with holes, marks, etc., which are provided immediately before the upstream side of each roll forming machine 6 and formed in the metal plate material P. A sensor 4 that detects the marking of the metal plate P by a phototransistor or a photoelectric element, and a rotating body that rotates in close contact with the surface of the running metal plate P are counted, and the number of rotations is counted to measure the movement amount of the metal plate P. (Not shown), and by sending the measurement data from the measuring means and the sensor 4 to the control means 20, the control means 20 performs a comparison operation with the previously set molding set dimension data, The exterior roll moving means 21 composed of a servomotor is driven according to the amount of movement of the plate material P to move the movable exterior roll in the axial direction.

The processing of a metal plate by the roll forming machine of the present invention having such a configuration will be described with reference to FIG. First, the metal plate body P wound in a coil shape is sent forward from the feeder, and holes, which serve as reference positions in molding by, for example, a press machine, are pierced at intervals of one length of the molded product. Slitting is performed by the forming roll 1 for slit processing to a desired development width diameter of the formed product. Next, the slit metal sheet material P is gradually bent (tapered) by sequentially traveling on the forming rolls 2 ₁ , 2 ₂ , 2 ₃ ... 2 ₁₀ of the forming roll row 2. The metal sheet material P is subjected to the remaining bending (taper forming) while traveling on the forming rolls 3 ₁ , 3 ₂ , 3 ₃ , 3 ₄ , 3 ₅ , 3 ₆ of the forming roll row 3 curved upward. As a result, the metal plate material P is fixed in a curved form, whereby the metal plate material is formed with its longitudinal direction curved upward while being subjected to taper forming in which the cross-sectional shape in the width direction changes continuously. Finally, a molded product is obtained by cutting the metal plate material one by one using a cutting device (not shown).

FIGS. 5 to 7 show examples of a molded product 22 formed by the roll forming machine of the present invention having such a structure.
From the right to the left of the figure, the width diameter of the central step portion of the molded product 22 is continuously increased in a tapered shape. As a method for forming such a long molded product, a normal roll-shaped metal plate material is used, and after a roll forming machine performs processing corresponding to the length of one molded product, the metal is continuously formed. A continuous molded product can be obtained by performing the forming process symmetrically in the running direction of the plate material and cutting the converted part. In this method, the same molded product is obtained when the molded product is a taper molding symmetric in the short direction, and a symmetric molded product is obtained when the molded product is asymmetric in the short direction. . Alternatively, the metal plate material may be cut in advance to a desired length and then formed one by one by the roll forming machine of the present invention. This is effective when a roof material is formed at a construction site. It is.

In the embodiment described above, the roll forming machine for performing the curved taper forming has been described.
The present invention is not necessarily limited to only curved taper forming. For example, when changing a lot of a molded product, the present invention may be used for a setup operation for changing a processing dimension in a roll forming machine. Further, not only the two exterior rolls may be made movable exterior rolls so as to be freely movable in the axial direction, but also one may be a fixed exterior roll and only the other may be a movable exterior roll.

Further, although not particularly shown, a width measuring means comprising an optical sensor using a CCD (Charge Coupled Device) formed in a linear shape is connected to the metal plate material P so as to sandwich the widthwise end of the metal plate material P. By arranging at right angles to P, the width diameter of the metal plate material P can be measured. Thereby, the lateral displacement of the metal plate may be detected, or the measurement data of the movement amount measuring unit 19 may be output to the control unit 20 together with the width diameter measuring unit to determine the accurate processing position of the metal plate. .

[0017]

As described above in detail, according to the roll forming machine of the present invention, the cross-sectional shape in the direction perpendicular to the running direction of the metal sheet material, that is, the width or height in the short direction changes continuously. A molded article having a complicated shape in which the longitudinal direction is curved upward or downward can be automatically and accurately manufactured easily without using a complicated and large-scale press die or the like.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing a system of a roll forming machine of the present invention.

FIG. 2 is a sectional view of a main part of the roll forming machine of the present invention.

FIG. 3 is a sectional view of a main part of the roll forming machine of the present invention.

FIG. 4 is a flowchart of the system of the roll forming machine of the present invention.

FIG. 5 is a side view of a molded product formed by the roll forming machine of the present invention.

FIG. 6 is an end view taken along the line AA of FIG. 5;

FIG. 7 is an end view taken along the line BB of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Forming roll 2 Forming roll row 3 Forming roll row 4 Sensor 5 Bed 6 Roll forming machine 7 Upper forming roll 8 Lower forming roll 9 Rotation drive shaft 10 Hollow shaft 11 Moving exterior roll 12 Moving exterior roll 13 Rotation drive shaft 14 Hollow shaft 15 Moving exterior roll 16 Moving exterior roll 19 Moving amount measuring means 20 Control means 21 Exterior roll moving means 22 Molded product

Claims (2)

[Claims] 1. An outer roll, which is integrally and rotationally driven, is fitted around the outer circumference of a pair of rotating shafts rotating opposite to each other.
In a roll forming machine that continuously manufactures a molded product by running a long metal plate material in a press-contact state between a pair of forming rolls and performing width cutting or bending, the forming roll has a press-contact portion of the metal plate material. A plurality of exterior rolls are provided so as to be curved upward or downward in the traveling direction, and the exterior roll is divided into two at an intermediate portion in the axial direction, and at least one of the exterior rolls is a movable exterior roll, and is provided by exterior roll moving means connected to the movable exterior roll. Along with being movable in the axial direction, the step of moving the metal sheet material includes a movement amount measurement means for measuring a movement amount of the metal sheet material in the traveling direction, and the movement amount measurement means and the exterior roll moving means In the meantime, the measurement data from the movement amount measuring means and the set dimension data of the molding input to the control means in advance are calculated, and the outer roll movement is performed according to the movement amount of the metal plate material. By providing a control means for driving the means to move the movable exterior roll in the axial direction, a molded product in which the longitudinal shape of the metal plate material is curved upward or downward while the cross-sectional shape perpendicular to the traveling direction changes continuously. A roll forming machine characterized by forming. 2. The roll forming machine according to claim 1, wherein both of the two divided outer rolls are movable outer rolls, and are respectively symmetrically movable in the axial direction.