JP3035025B2 - Section bending machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending machine for extruded aluminum members.

[0002]

2. Description of the Related Art As one method of bending a shape member, there is a method of performing drawing bending, which is disclosed in, for example, JP-A-59-169629. Also, a method for bending another mold material is disclosed in Japanese Patent No. 164.
No. 525.

[0003]

[SUMMARY OF THE INVENTION FIGS. 9 and 10 the first
A mold material of the bending device shown in 1 of Japanese. Shape material 110
Is pressed against the bending die 119 and pressed by the pressing die 118, and the lap arm 1 is rotated about the rotation center 120 of the die surface of the bending die 119 as an axis.
When the rotating member 11 is rotated in the direction indicated by the arrow A, the pressing member 118 presses the mold member 110 against the bending mold 119 and is bent to a radius R. In such a conventional example, the mold 110 is bent with a small radius of curvature.

In general, the above-described method of bending a mold by pulling and bending allows the bending die 119 to be replaced when the radius of curvature R is changed, and also allows the distance from the center of rotation to the pressing die 118 to be changed.

[0005] While the change in the radius of curvature R is small, it corresponds to the stroke range of the horizontal pressing cylinder 113 for moving the guide 116 for mounting the pressing die 118 forward and backward. Although not shown in the above figure, if the change in the radius of curvature R is larger, the position of the horizontal pressing cylinder 113 may be adjusted. When the radius of curvature R becomes as large as, for example, 450 to 10000 millimeters, and the radius of curvature R changes within this large value, the distance from the center of rotation to the pressing die 118 is at least 10 meters in the above method. This necessitates a large floor space for installing the machine. Therefore, if another method, such as press bending, is used for bending the mold material, a die is required, and the mold cost becomes expensive. The conventional example by such pulling and bending is limited to the case where the bent shape is an arc. For example, it is extremely difficult to obtain a shape of another quadratic curve or a part of a cubic curve. . Also, according to the compression bending or the tension bending, the shape is twisted or pulled toward the heavy and thick side, and the shape of the shape at the bent portion is lost.
In the case of bending with a bending roll, only a very limited shape member can be bent. The above-mentioned second public
What is described in the report is a pair of opponents with a mold and pipe or professional
The mold is moving while holding the fill. Therefore, the mold
The moving range of the device becomes large, and the device becomes large.

The present invention has been made in view of the above, and has a large bending curvature, can be adapted to a wide range of curvatures, can be bent while maintaining the shape of the shape material accurately, and has a small installation floor area. It is intended to provide a processing machine.
Another object of the present invention is to provide a bending machine capable of bending a profile material with a curve other than arc bending.

[0007]

SUMMARY OF THE INVENTION The present invention provides a swivel device, a linear motion device carried by the swivel device and moving in the radial direction of the swivel device, and a bending device carried on the turning center side of the swivel device of the linear motion device. A roller, a mold holding roller provided on the linear motion device and provided with a drive device capable of moving back and forth toward a surface of the mold material perpendicular to the bending direction; and a crossing direction of the linear motion device opposed to the bending roller. Equipped with a mold fixed in the direction and a fixing device to fix the mold material to the mold, generally,
A shape bending machine characterized in that the center of the turning device and the center of the radius of curvature of the mold are present at different positions.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a side view, FIG. 2 is a plan view, and FIG. 3 is a front view. The die bending machine is broadly classified into two types: a roller motion device A for causing rollers acting on the die to perform a predetermined motion, and a die receiving device B for holding and fixing the die material of the workpiece to the die. The roller motion device A includes a revolving device A-1 for revolving each roller and a roller pressing device A-2 which is a linear motion device attached to the revolving device in a direction to press each roller against the mold. The mold receiving device B comprises a mold, a mold supporting member B-1, and a mold material fixing device B-2.

The turning device A-1 is as follows.

As shown in FIG. 4, a vertical shaft 3 is fixed to a U-shaped swivel 2 fixed on a base 1, and a boss portion of a swivel beam 5 is fixed to the shaft 3 by a radial bearing 3a and a thrust bearing 4. It is rotatably supported. The pinion 6 fixed to the boss of the swivel beam 5 is engaged with a rack 8 guided by a fixed linear motion guide 7. The rack 8 is shown in FIG.
Is connected to the piston rod of the fixed hydraulic cylinder 9 for turning shown in FIG. A rotatable lift prevention roller 28 provided at the lower end of the swivel beam 5 rolls in an arcuate guide 29 about the shaft 3. The extension of the axis of the support shaft of the roller 28 extends through the axis of the shaft 3.

The turning device A-1 stops the turning hydraulic cylinder 9 by a proximity switch (not shown), and adjusts the position of the switch to adjust the turning angle.

The roller pressing device A-2 is as follows.

As shown in FIG. 1, a slide base 11 for moving the bending roller forward and backward in a direction passing through the axis 3 of the turning device is fixed on the turning beam 5, and a slide 12 slides on the slide base 11. The piston rod of the bending roller advance / retreat hydraulic cylinder 13 fixed to the slide base 11 is connected to a bracket 14 fixed to the slide 12. A bending roller shaft 16 in the vertical direction is fixed to a yoke portion 15a of the bending roller stand 15 erected on the slide 12 facing the direction of the axis 3 of the turning device A-1, and a bending roller 17 is fixed to the bending roller shaft 16. Are rotatably fitted.

The paper of FIG. 1 fixed to the bending roller table 15
A bracket 20 which is suspended from a lever 19 integrally with a lever 19 by a support shaft 18 at right angles to the slide 12 is rotatably mounted on the slide 12 . One end of the lever 19 is connected to a hydraulic cylinder 21 for a clevis-type vertical member upper pressing roller attached to the slide 12. The other end of the lever 19 is provided with an elevating device 22 for the upper mold pressing roller, and the lower end of the elevating device 22 is provided with a feed device 23 in the left-right direction in FIG. One upper pressing roller mounting table 27 fixed to the lower end of the feeder 23 has a surface as shown in FIG.
Two upper pressing rollers 25 are rotatably mounted on a parallel horizontal axis. The rollers 25 are juxtaposed on both sides of the bending roller 17 at the front left side of the bending roller 17 in FIG. Lifting device 22 and the carriage 37 to sliding fit movably in the vertical direction in the vertical direction of the guide member 36 integral with the lever 19, Ru screw feeder 38 Tona. Screw feeder
The mounting 38 is a male screw member 38a fixed to the carriage 37.
And the lifting handle 22a screwed into the male screw member 38a
Having. The lifting handle 22a is centered on the screw member 38.
It has a female screw to be screwed into a. Lift handle 22a is a plan
By a bracket 36a provided integrally with the inner member 36
The center is rotatably supported and does not move in the axial direction.
I am being restrained. Slide in carriage 37
30 moves in a direction (left-right direction) perpendicular to the plane of FIG.
I'm in good shape. Left and right to send this slide 30
A directional feeder 23 is provided. Left-right feeder
23 is a rack and pinion device (not shown). By rotating the lifting handle 22a, the male screw member 38 is rotated.
a, the carriage 37, the lateral feed device 23, and the mount 27 of the upper pressing roller 25 move up and down, and the position of the upper pressing roller 25 is adjusted in the vertical direction . In addition, by the slide 30 being moved by the left and right feeder 23,
The position of the upper die pressing roller 25 with respect to the bending roller 17 can be adjusted.

The mold supporting member B-1 is as follows.

An arc-shaped mold 31 is fixed between the shaft 3 of the turning device A-1 and the bending roller 17.
Bending the mold W of the mold 31 and the slide die W1
The center of curvature at a point P facing the roller 17 is on a line connecting PO. Usually, the center of curvature of the mold is located at a position different from the center of the shaft 3, but the mold W is an arc, and the bending radius is PO and Only when equal, the center of the mold 31 is the center of the axis 3
Consistent with. The mold 31 is fixed to a mold mount 32 fixed to the machine frame 2 provided on the base 1. Mold mount 32
The center of the mold clamp 34 whose upward movement is prevented by the planted bolt nut 33 presses the flange 31 a of the mold toward the mold mount 32.
A hydraulic cylinder 35 that lifts the rear end of the mold clamp 34 is fixed to the mold mount 32.

The mold W is attached to the mold 31 by applying a sliding die W1 to the mold W.

An apparatus B-2 for fixing the mold material to the mold 31 is as follows.

As shown in FIG. 7, the upper mold clamping device 4 presses the mold W against the mold mount 32 from above.
1 and a side mold clamping device 42 which presses the mold W against the mold 31 from the side. A clamp device base 43 is fixed to the machine frame 2 fixed on the base 1 so that the vertical position can be adjusted. As shown in FIG. 8, the pivoting arm 45 for clamping, which is pivotally attached to the pivot 44 fixed to the clamping device base 43, is allowed to move in the longitudinal direction of the pivoting arm 45.
A feed nut 46 is attached to a nut fixture 50 constrained in the crossing direction of the turning arm 45 by a vertical pivot. A screw feeder 48 having a feed screw 47 screwed into the feed nut 46 is provided on the clamp base 43. By rotating the handle 49 fixed to the feed screw 47, the feed nut 46 is moved, and the turning arm 45 for clamping is turned around the pivot 44 to adjust the position.

The slide base 51 for pressing the side of the material fixed on the turning arm 45 for clamping coincides with the longitudinal direction of the arm 45, and the saddle 52 slides on the base 51, and further, the saddle 52. A front-rear slide 53 in the same direction as the movement direction of the saddle 52 is slidingly fitted. An up-down guide 53a is provided on the front-rear slide 53, and the up-down slide 54 is slidably fitted in the up-down direction. A piston rod of a clevis-type mold member side holding hydraulic cylinder 55 whose one end is pivotally supported by the clamp swing arm 45 is connected to the saddle 52. Slide 5 on saddle 52
A screw feeder 56 is provided for adjusting the position of the clevis 3 back and forth, and a piston rod end of a clevis-type upper cylinder hydraulic cylinder 57 pivotally supported at one end by a slide 53 is attached to the vertical slide 54. At the tip of the saddle 52, a side pressing member 58 for pressing the side surface of the mold W is provided.
At the lower end of the vertical slide 54, an upper surface pressing tool 59 for pressing the upper surface of the mold W is provided. When the front-rear slide 53 is moved back and forth by the screw feeder 56, it is possible to adjust the position of the die upper surface pressing tool 59 in the die radial direction with respect to the stationary die material side pressing tool 58.

Although not shown, a hydraulic power source and a valve device for driving the hydraulic cylinders, and sensors for detecting the position of each moving part, such as a proximity switch and the like, and an electric control device are provided.

The die material to be processed is an arm extruded die material, but the shape of the bendable die material is limited. The workpiece is not an extruded aluminum material, for example, a steel material can be bent, but in that case, a slide die W1 for protecting the material W is unnecessary. When the mold W is made of aluminum, the slide die W1 is made of an elastic synthetic resin material. The length of the sliding die W1 is almost the same as the mold surface of the mold 31,
A cross section for preventing deformation of the mold material W is provided and is linear.

Attachment of the molding material W to the molding material bending machine is performed by aligning the linear molding material W with the slide die W1 except for the end of the molding material W, and forming the molding material on the curved surface of the mold 31 at the molding material fixing device B-2.
When placed so as to be in contact with the material W, the side surface and the lower surface of the mold material W come into contact with the mold 31. Here, the hydraulic cylinder 5
When the urging member 5 is urged, the saddle 52 moves forward, and the side pressing member 58 presses the mold W against the side surface of the mold 31. This saddle 52
The slide 53 and the upper and lower slides 54 move forward together with the forward movement, and the upper surface pressing tool 59 at the lower end of the upper and lower slides 54 comes out just above the mold W. Next, the hydraulic cylinder 5 for holding the upper part of the die
7 is urged, the vertical slide 54 descends, and the upper surface presser 59 presses the mold W against the mold 31.

Next, the roller pressing device A-2 operates.
The swivel beam 5 is at the counterclockwise rotation limit position in FIG. 2 and is at a position close to the mold fixing device B-2.

When the fixing of the molding material W is completed, the hydraulic roller 13 for moving the bending roller forward and backward is urged by the automatic or manual push button activation in a sequence, and the bending roller slide 12 moves forward, and the slide 12 is carried. The bending roller 17 advances and presses the mold W to the mold 31 via the sliding die W1 to bend the portion of the mold W between the fixing portion of the mold W pressed by the mold fixing device B-2 and the bending roller 17. .

In the above operation, when the bending roller 17 comes into contact with the slide die W 1, the hydraulic cylinder 21 for the upper die pressing roller is urged to push up one end of the lever 19 and lower the upper die pressing roller 25 at the other end to lower the slide die. W
Press 1. In this state, the bending roller 17 advances further,
The mold W is made to follow the mold 31. Subsequently, the turning hydraulic cylinder 9 is biased to retract the rack 8 and rotate the pinion 6 clockwise, so that the turning beam 5 rotates clockwise about the axis 3 in FIG. The pressing device A-2 is turned around the shaft 3. As a result, the bending roller 17 rolls on the mold W via the sliding die W1. The mold W is pressed against the mold 31 by the bending roller 17 while being pressed by the mold upper pressing roller 25 via the slide die W1, and the shape of the mold W conforms to the curve of the mold 31. During the bending operation, the slide die W1 is bent
It rolls on a certain form member W. During the movement of the bending roller 17, the center of rotation is at O and the center of curvature of the mold 31 is at O1, and they do not coincide. Therefore, the bending roller 17 is pushed back against the hydraulic pressure applied by the hydraulic cylinder 13. Then, it rolls and moves along the mold 31. When the bending roller 17 comes near the end of the mold 31, a proximity switch (not shown) detects the position of the swivel beam 5 and stops, and the hydraulic cylinder 21 for the upper pressing roller of the die is urged downward and the bending roller moves forward and backward. The hydraulic cylinder 13 is urged away from the mold 31, the upper die press roller 25 moves up and away from the slide die W <b> 1, and the bending roller 17 moves farther from the mold 31. After this, the sliding die W
1 can be removed. Then, the turning hydraulic cylinder 9
Is urged and the rack 8 advances to rotate the pinion 6 in the counterclockwise direction, so that the swivel beam 5 also rotates in the same direction, and the roller pressing device A-2 returns to the original position. Next, the hydraulic cylinder 57 for pressing the upper part of the die of the die fixing device B-2 is urged, and the hydraulic cylinder 55 for pressing the side of the die is urged in the direction opposite to the direction when the die is fixed, so that the vertical slide 54 is pressed.
Then, the upper surface pressing tool 59 that has pressed the upper portion of the molding material W rises, and the molding material side pressing tool 58 is far from the molding material W, so that the bent molding material W can be removed.

In the above-mentioned bending operation, the die W is subjected to plastic deformation by the bending roller 17 while being pressed by the die upper pressing roller 25, so that the shape of the die can be maintained well. The bending roller 17 is urged by the bending roller advance / retreat hydraulic cylinder 13 so as to be retracted with a force greater than the bending force of the molding material W while pressing the bending roller 17 against the mold 31. 2 center of rotation and mold 3
In the state where the centers of curvature of 1 do not match, the mold W is
Can be bent in accordance with the curvature.

In the above description, the radius of curvature of the mold 31 depends on the bending roller 1 when the bending roller 17 rotates without moving forward and backward.
In the case where the radius is larger than the radius of the arc in contact with 7, but in the opposite relationship, as the bending of the mold W proceeds, the bending roller advance / retreat hydraulic cylinder 13 continues to advance and moves the mold W along the mold 31.

In the above-described embodiment, a mold having an intermediate radius of curvature having an arc-shaped mold surface on the side surface is used, and the angle that can be bent in one process is smaller than 90 degrees. Is to rotate the mold material W along the mold 31 to process the subsequent linear portion. When a mold having a small radius of curvature is used, it is possible to perform 90-degree bending by one processing.

[0030]

As described above, the present invention has the above-mentioned structure. (1) Since the bending roller acts while pressing the surface perpendicular to the bending direction of the die with the die pressing roller, the sectional shape of the die is accurately maintained. A curved portion is formed. (2) Since the center of the radius of curvature of the mold and the center of rotation of the turning device are generally at different positions, the shape can be bent over a wide range of the radius of curvature. (3) When bending a profile into an arc with an extremely large radius, for example, if the radius is 10 meters, in the case of pull bending,
The die that needs only 10 meters for the radius of the die alone. The die that rolls and presses the die through the die has a large range of motion because it is straight, and in the case of 90-degree bending, the floor is about 14 meters square. Although an area is required, in the case of the present invention, for example, 2.
The floor area is less than 5 meters, and the installation floor area is small. (4) The shape can be bent into a curve other than an arc.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a longitudinal sectional view of the turning device.

FIG. 5 is a partial plan view of FIG. 4;

FIG. 6 is a front view of a molding material upper pressing roller unit.

FIG. 7 is a side view of the mold material fixing device.

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a plan view of a conventional example.

FIG. 10 is a view taken in the direction of arrows AA in FIG. 9;

[Explanation of symbols]

 2 Machine stand 5 Swivel beam 6 Pinion 7 Linear guide 8 Rack 9 Hydraulic cylinder for rotation 11 Slide base 13 Hydraulic cylinder for moving forward / backward of bending roller 15 Bending roller base 16 Bending roller shaft 17 Bending roller 19 Lever 22 Lifting device for upper part holding roller 23 Feeder 25 Upper Pressing Roller 27 Upper Pressing Roller Mounting Base 31 Mold 35 Hydraulic Cylinder 41 Upper Die Clamping Device 42 Side Die Clamping Device 45 Swivel Arm 55 Clevis Type Hydraulic Cylinder for Laterally Pressing Die 59 Upper Surface Holder O Center W Mold material W1 Sliding die A Roller motion device A-1 Swivel device A-2 Roller pressing device B Mold receiving device B-1 Mold support member B-2 Mold material fixing device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B21D 7/024 B21D 7/03

Claims (1)

(57) [Claims] 1. A turning device, a linear motion device carried by the turning device and moving in a radial direction of the turning device, and a bending roller carried on a turning center side of the turning device of the linear motion device.
A mold holding roller which is supported by a linear motion device and is provided with a drive device which is capable of moving back and forth toward a surface of the shape material perpendicular to the bending direction; and a fixing member which is opposed to the bending roller and traverses the motion direction of the linear motion device. A mold bending machine comprising: a mold provided; and a fixing device for fixing the mold to the mold, wherein the center of the turning device and the center of the radius of curvature of the mold are generally located at different positions.