JP3297214B2 - Bending method and bending machine for long metal bars - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing method and a processing machine for bending a long aluminum profile or the like at a predetermined curvature for use as a rafter profile in a garage or the like. The present invention relates to a bending method and a bending machine for a long metal bar which enables continuous bending with a simple mechanism accurately and with multiple curvatures without causing cross-sectional deformation.

[0002]

2. Description of the Related Art There have been known a large number of processing machines for bending a metal profile formed by extrusion of an aluminum sash or the like at a predetermined curvature.
As disclosed in Japanese Patent No. 7707, there is provided a clamp die having a curved surface, and a bending guide made of an elastic plate material having one end fixed and installed opposite to the curved surface of the clamp die, and the bending guide is free. The end is pressed in the direction of the clamp die by the bending adjustment axis to bend the guide at a predetermined curvature, and the feeder presses the profile interposed between the bending guide and the curved surface of the clamp die while bending the guide. There is a bending machine that performs bending at a predetermined curvature along a guide.

[0003]

However, in the above-mentioned bending machine, the curvature for working is limited by the curved surface of the clamp die, so that not only bending work with various and wide curvatures cannot be performed, but also the same apparatus. Therefore, it is impossible to perform multi-stage bending with different curvatures. Further, if the bending process is performed with a large curvature that deviates from the curvature of the curved surface, the inside of the shape member is crushed, and the bending process cannot be performed.

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 provide a bending method and a bending machine capable of continuously performing bending with different curvatures on the same shape using the same machine. Is to provide.

[0005]

In order to achieve the above-mentioned object, a method for bending a long metal profile according to the present invention is performed by contacting the profile with the peripheral surface of a main roll. Extruding a predetermined length, installed on the profile material introduction side with the main roll and a sub-roll installed relative to the main roll,
A predetermined portion of the profile is clamped and fixed by the fixed clamper, and the main roll and the sub-roll are clamped by the moving clamper installed on the profile discharge side and are moved to the main roll while moving a predetermined stroke. Performing bending along, releasing the clamping by the moving clamper, and driving and rotating the main roll and the sub-roll in the shape material discharging direction, moving the sub-roll in a predetermined stroke with respect to the main roll and positioning the sub-roll, In addition to the feature that the profile is extruded by the profile pusher and that the profile is positively pulled out by the main roll and the sub-roll, the profile is continuously bent at two or more stages of curvature.

The above-mentioned method is also characterized in that the main roll is driven and rotated, the sub-roll is provided opposite to the main roll and is driven and rotated, and the main roll and the sub-roll are provided on the shape discharge side of the sub-roll to clamp the shape. A moving clamper that performs a bending process along the main roll while moving a predetermined stroke, a fixed clamper that is installed on the profile introduction side of the main roll and the sub-roll, and clamps and fixes the profile, The present invention is realized by a bending machine for a long metal member according to the present invention, which has a member for pushing a member to be extruded in a discharge direction.

[0007]

The procedure for bending a profile by the bending machine according to the present invention will be described. First, the movable clamper and the fixed clamper are released, and the profile is moved to a profile pushing portion set at a predetermined position. Set to make contact with. When this setting is completed, the movable clamper and the fixed clamper are operated to clamp the profile at two places. At this time, the profile is in contact with the peripheral surface of the main roll, and the sub-roll is not in direct contact with the profile, but is at a remote position.

Next, the movable clamper rotates around the main roll by a predetermined angle. By this rotation, the profile whose free end is clamped by the movable clamper is bent at a predetermined curvature along the peripheral surface of the main roll. Thereafter, the holding by the movable clamper is released, and at the same time, the holding of the fixed clamper is changed to gentle holding. At this time, the sub-roll is moved to a predetermined position to bend the profile into a predetermined small curvature different from the curvature. Here, while the main roll and the sub-roll start rotating at the same time, the profile pushing section operates synchronously to extrude the profile at a predetermined speed, and the profile which comes into contact with both rolls with the main roll and the sub-roll. Positively in the discharge direction. At this time, the profile is drawn out by the sub-roll in a direction different from the sending-out direction of the main roll by a predetermined angle, and is gradually bent at a small curvature.

[0009] Since the bending process with a large curvature is performed along the peripheral surface of the main roll, there is almost no fear of deformation due to crushing as in the conventional case. No mandrel is required for processing.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is an overall perspective view showing a metal long bending machine according to a representative embodiment of the present invention. The bending machine 1 of the present invention includes a main roll 2 controlled and rotated by a drive source (not shown), a sub-roll 3 installed opposite to the main roll 2 and controlled and rotated by a drive source (not shown),
A moving clamper 5 which is installed on the shape material discharge side of the main roll 2 and the sub-roll 3 and performs a bending process along the main roll 2 while nipping the shape material 4 and moving a predetermined stroke; It is installed on the profile introduction side of sub-roll 3,
A fixed clamper 6 for holding and fixing the shape member 4;
And a profile pushing portion 7 for pushing the material in the discharge direction.

The main roll 2 has a flange 2a. The main roll 2 is connected to a drive source such as an electric motor installed on a machine base via a speed reducer (not shown), and is driven to rotate at a predetermined timing. As the main roll 2, rolls having various diameters are prepared in advance, and can be replaced as needed. A table 8 is installed close to one side of the main roll 2, and a guide path for the profile 4 is formed at a position of the table 8 close to the main roll 2. Holding body 6b for holding the movable holding body 6a between
Is fixed. The movable holding member 6a is fixed to a rod end of a fluid pressure cylinder 6c such as air or oil pressure installed opposite to the fixed holding member 6b of the table 8,
The movable clamp 6a and the fixed clamp 6b constitute the fixed clamper 6 described above.

A fluid pressure cylinder 9 is also installed at the end of the table located on the extension of the profile 4 set along the side surface of the fixed holding body 6b, and the rod end of the cylinder 9 is also provided. The mandrel 10 is detachably fixed via a mandrel rod 10a. The mandrel 10 has a cross section that matches the cross-sectional shape of the profile 4 and fits in the longitudinal direction of the profile 4. And table 4
A long hole 11 is formed along the mandrel rod 10a at a portion where the mandrel rod 10a extends, and a feed screw rod 12 which is controlled and rotated by an electric motor (not shown) in the length direction of the long hole 11 is installed. The feed screw rod 12 is screwed through a profile pushing block 13 which fits inside the elongated hole 11 and slides. The profile pushing block 13 has a placement surface 13a on which the end of the profile 4 is placed and a pressing surface 13b which contacts the end of the profile 4.
The elongated hole 11, the feed screw rod 12, the profile pushing block 13
The section pushing section 7 is constituted by an electric motor (not shown) and the like. An insertion hole, not shown in the drawing, through which the mandrel rod 10a is inserted is formed in the pressing surface 13b.

According to this embodiment, the sub-roll 3 is rotatably supported by the block-shaped bracket 14 having a predetermined diameter and rotating with a predetermined radius about the axis of the main roll 2. Control rotation is performed in connection with a drive source (not shown). In the illustrated example, the sub-roll 3 is configured to rotate and position around the main roll 2 with a predetermined radius around the main roll 2, but moves around the main roll 2 through another process and moves to a predetermined position. The rotation radius of the sub-roll 3 can be arbitrarily adjusted.

The movable clamper 5 is provided with the main roll 2 so that the sub roll 3 is sandwiched between the movable clamper 5 and the fixed clamper 6.
In the illustrated example, one end of a substantially L-shaped block-shaped bracket 15 is rotatably supported by sharing the axis of the main roll 2, and the bracket 15 is free to rotate. A fluid pressure cylinder 5c having a movable holding member 5a fixed to the rod end is fixed to the end, and a fixed holding member 5b is fixed to the movable holding member 5a. Then, the fixed holding member 5b rotates along the peripheral surface of the main roll 2.

Next, the procedure of bending the hollow profile 4 by the bending machine 1 according to the illustrated embodiment will be described. First, FIG.
As shown in the figure, the movable clamping bodies 5a and 6a of the movable clamper 5 and the fixed clamper 6 are respectively retracted, and the fluid pressure cylinder 9 is operated so that the mandrel 10 at a predetermined position is moved together with the mandrel rod 10a together with the mandrel rod 10a. The hollow portion of the profile 4 is inserted into the mandrel 10 until the end surface contacts the pressing surface 13 b of the profile pushing block 13. When the insertion is completed, the movable holding members 5a and 6a are respectively advanced, and as shown in FIG.
6b are sandwiched between two portions of the profile 4. At this time, the fixed clamper 6 firmly clamps the shape member 4, but does not deform due to the presence of the mandrel 10. At this time, the sub-roll 3 is not in direct contact with the profile 4 and is at a remote position.

Next, approximately L for supporting the movable clamper 5
The letter-shaped block 15 rotates at a predetermined angle about one end as shown in FIGS. By this rotation, the profile 4 whose free end is clamped by the movable clamper 5 is bent to a predetermined curvature along the peripheral surface of the main roll 2. Thereafter, only the movable holding body 5a of the movable clamper 5 retreats to release the holding of the shape member 4. At this time, since the sub-roll 3 simultaneously bends the profile 4 to a predetermined curvature, the sub-roll 3 moves to a predetermined position as shown in FIG. Here, the main roll 2 and the sub-roll 3 start rotating at the same time, and the profile pushing section 7 operates synchronously to push the profile 4 at a predetermined speed, and at the same time, the main roll 2 and the sub-roll 3 With this, the profile member 4 that comes into contact with both rolls 2 and 3 is positively drawn in the discharge direction. At this time, the profile 4 is
As a result, the main roll 2 is pulled out in a direction different from the sending direction by a predetermined angle, and the bending process is gradually performed with a small curvature.

Since the profile 4 is a hollow and relatively thin extruded material, the mandrel 10 is used. However, since a bending process with a large curvature is performed along the peripheral surface of the main roll 2. Unlike the conventional case, there is almost no fear of deformation due to crushing, and the mandrel 10 becomes unnecessary if the profile has a normal thickness.

[0018]

As apparent from the above description, according to the method and the machine for bending a metal profile according to the present invention,
Since local pressing force does not act on the profile, there is little worry about crushing, etc., and bending can be performed extremely smoothly. In addition, by operating the moving clamper, bending having a curvature along the main roll can be performed. Since the clamping of the moving clamper is released and the main roll and the sub-roll can continuously perform bending with different curvatures, the main roll and the sub-roll can be changed and the sub-roll position can be changed to perform arbitrary and different bending. It is possible to perform it.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an example of a continuous bending machine for a long metal member according to the present invention.

FIG. 2 is a perspective view showing a first-stage bending process performed by the same machine.

FIG. 3 is a plan view showing a state where a profile is set in the machine.

FIG. 4 is a plan view showing a first-stage bending process performed by the same machine.

FIG. 5 is a plan view showing a second-stage bending mode by the same machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bending machine 2 Main roll 2a Flange 3 Sub roll 4 Shaped material 5 Moving clamper 5a Movable holding body 5b Fixed holding body 5c Fluid pressure cylinder 6 Fixed clamper 6a Movable holding body 6b Fixed holding body 6c Fluid pressure cylinder 7 Shape pushing section Reference Signs List 8 Table 9 Fluid pressure cylinder 10 Mandrel 10a Mandrel rod 11 Slot 12 Feed screw rod 13 Shape pushing block 13a (Shape) mounting surface 13b (Shape) pressing surface 14,15 Bracket

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-277763 (JP, A) JP-A-5-96331 (JP, A) JP-A-61-38720 (JP, A) JP-A-57-57 193235 (JP, A) JP-A-53-85764 (JP, A) JP-A-3-291117 (JP, A) JP-A-59-58521 (JP, U) JP-A-57-56512 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B21D 7/08 B21D 7/024-7/025 B21D 9/10

Claims (4)

(57) [Claims] 1. A processing method for bending a long metal profile, wherein the profile (4) is extruded a predetermined length while being in contact with a peripheral surface of a main roll (2). The main roll (2) and the sub-roll (3) installed opposite to the main roll (2) are installed on the profile introduction side, and the profile (4)
The fixed part is clamped and fixed by the fixed clamper (6), and the section is clamped by the movable clamper (5) installed on the section discharge side of the main roll (2) and the sub-roll (3). Performing bending along the main roll (2) while moving a predetermined stroke, releasing the clamping by the moving clamper (5), and moving the main roll (2) and the sub-roll (3) in the shape discharge direction. While driving and rotating, the sub-roll (3) is moved and positioned along a predetermined stroke with respect to the axis of the main roll (2), and the profile (4) is moved by the profile pushing part (7). It is equipped with a main roll (2) and a sub-roll (3) and is actively pulled out, and it is characterized by continuously bending the profile (4) at two or more steps of curvature. Bending method of the profile. 2. A processing machine for bending a long metal profile, comprising: a main roll (2) which is driven and rotated; and a sub-roll () which is installed and driven relative to the main roll (2). 3) and the main roll (2) and the sub-roll (3) are installed on the shape discharge side, and are bent along the main roll (2) while nipping the shape (4) and moving a predetermined stroke. Do move clamper
(5) and a fixed clamper which is installed on the profile introduction side of the main roll (2) and the sub-roll (3) and clamps and fixes the profile (4).
(6) A bending machine for a long metal profile, comprising: a profile pushing portion (7) for extruding a profile (4) in a discharge direction. 3. The bending machine according to claim 2, wherein the sub-roll (3) moves a predetermined distance with respect to the main roll (2), and its installation position is adjustable. 4. The method according to claim 3, wherein the predetermined stroke is on an arc having an adjustable radius centered on the main roll.
The bending machine described.