JPH0470093B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides metal sheets, corrugated sheets,
This invention relates to an apparatus and method for cylindrical bending, conical bending, elliptical bending, and end bending of pipes, L-shaped, H-shaped, U-shaped plates, etc.

(Prior art) A cone manufacturing device with rollers supported at both ends, in which the front and rear heights of the upper roller can be adjusted independently, and a pair of left and right lower rollers can be moved independently in the left and right directions, was developed in 1973-34600. It is known from the publication No.

(Problem to be Solved by the Invention) In the cone manufacturing apparatus described in Japanese Utility Model Publication No. 40-34600, both ends of the upper roller can be moved up and down independently, and the upper roller can be positioned at a desired height and tilted. You can also do that. The distance between the pair of left and right lower rollers can be changed freely, and it can also be formed into a figure eight shape, allowing various bending processes other than conical bending. However, when the plate material is bent into a cylindrical or conical shape, there is a problem in that it becomes difficult to remove the processed plate material from between the upper and lower rollers.

The object of the present invention is to solve this conventional problem,
Various bending processes can be performed freely, and conical and
To provide a practical bending roll device that can easily take out a plate material bent into a cylindrical shape.

(Means for Solving the Problems) The gist of the present invention that solves these problems is as follows: 1. A plate material is inserted into an upper roll whose vertical position is freely adjustable and a pair of left and right lower rolls, and the three rolls are rotated. In a bending roll device that bends plate materials, the front, rear, left, and right bearings of the lower roll can be moved independently in the left and right directions, and the front bearing stand that supports the upper roller can be moved forward and in the left and right directions. A bending roll device characterized in that the front bearing stand can be moved to a left or right position away from the front end of the upper roller.

2. The bending roll device according to claim 1, further comprising a bending mold that fits into the pair of lower roll and upper roll.

3. The bending roll device according to claim 2, wherein the bending roll device is used for forming a corrugated cylindrical cylinder, wherein the surface of the bending mold is formed with corrugated irregularities.

4. The bending roll device according to claim 2, which is used for bending molded copper, in which a step is provided on the outer diameter of the bending copying mold.

5. The bending roll apparatus according to claim 2, which is used for spherical bending, in which the outer diameter of the bending mold is continuously changed.

(Function) In this invention, the interval between the lower rolls can be changed by moving the front, rear, right and left bearing parts of the lower rolls left and right while maintaining parallelism. By moving the upper roll up and down while maintaining the upper roll parallel to this, the curvature of the plate material can be freely changed and formed by the parallel lower roll and upper roll.

Therefore, cylindrical bending and end bending of various curvatures can be performed.

Next, by changing the amount of movement of the bearing part of the lower roll from front to back, the roll spacing of the lower roll can be changed from front to back.
By arranging the lower roll in a figure-eight shape and operating the upper roll horizontally or tilted, conical bending, double-end bending with different diameters, and elliptical bending can be performed. Particularly in the case of conical bending, the lower roll is shaped like a figure eight, and the upper roll is tilted so that the open side of the lower roll is higher and the closed side of the lower roll is lower, and the lower roll and upper roll are rotated. Allows conical bending.

Furthermore, if a bending mold with a desired outer shape, such as a concave or convex bending mold, is installed between the lower roll and the upper roll, the mold can be bent into a drum-like shape, a drum-like shape, etc., depending on the shape of the mold. It can be bent into a tube. Furthermore, by forming wave-like irregularities on the surface of the mold, the corrugated plate can be bent into a cylindrical shape. Furthermore, a plate material having an L-shaped, H-shaped, or U-shaped cross section can be bent into a cylindrical shape by shaping the mold surface to that shape. In the case of light U-shaped bending, semicircular bending, edge bending, etc., the bent plate material is taken out by feeding it out from the upper and lower rollers. If it is bent into a closed loop like a cylinder or cone, it cannot be fed out between the rollers.
The front bearing pedestal of the upper roller is moved forward to separate it from the upper roller, and further moved in the left-right direction to move the front bearing pedestal to a position away from the front end of the upper roller. In this state, the plate material bent into a cylindrical/conical shape is moved to the front of the roller and taken out from the front end of the roller. After taking out the bent plate material, the front bearing stand is moved in the reverse process to pivotally support the front end of the upper roller.

(Example) Examples will be described below based on the drawings.

Fig. 1 is a partially cutaway side view of this embodiment, Fig. 2 is a front view of the same, Fig. 3 is an explanatory diagram showing the roll drive gear transmission mechanism, and Fig. 4 shows the roll arrangement state in the case of cylindrical bending. Fig. 5 is an explanatory drawing showing the state of cylindrical bending, Fig. 6 is an explanatory drawing showing the state of end bending, and Fig. 7 is the positional relationship between the front and rear rolls when the ends are bent at different diameters. FIG. 8 is an explanatory diagram showing the positional relationship of rolls in conical bending.
FIG. 10 is an explanatory diagram showing the positional relationship of the rolls on the circumference of the minor axis and major axis in elliptical bending. FIG. 11 is a perspective view showing the product of elliptical bending. Fig. 12 is an explanatory diagram showing drum-shaped tube bending using a bending copying die, Fig. 13 is a sectional view taken along line A-A in Fig. 12,
Figure 4 is a sectional view taken along line B-B in Figure 12, and Figure 15.
The figure is a perspective view showing the processed drum-shaped cylinder product.
Figure 6 is an explanatory diagram showing spherical bending into a drum-shaped tube using a bending copying mold, Figure 17 is a perspective view showing the processed drum-shaped tube, and Figure 18 is using a bending copying mold. Fig. 19 is a cross-sectional view showing the processed flanged cylinder, and Fig. 20 is a diagram showing the bending of a corrugated sheet using a bending mold. An explanatory view showing cylindrical bending, and FIG. 21 is a perspective view showing a processed corrugated cylinder.

In the figure, 1 is the upper roll, 2 is the lower roll, 3 is the fixed rear bearing part of the upper roll 1, 4 is the front bearing stand of the upper roll 1 which can be moved in the front and back direction, and 5 is the left and right direction of the lower roll 2. Sliding rear bearing part, 6 is missing number,
Reference numerals 7 and 8 denote front bearing parts of the lower roll 2 that slide in the left-right direction, and 9 and 10 denote bearing blocks having a spherical bearing structure for the upper roll 1. It can be installed freely. 11,1
2 is a rear part for raising and lowering coaxial bearing blocks 9 and 10.
The front bearing stands 3 and 4 have oblong windows; 13 and 14 are hydraulic cylinders that move the bearing blocks 9 and 10 up and down and push the upper roll; 15, 16, and 17 are the rear and front bearing parts 5, There is some play on the sliding surfaces 7 and 8. 18 is a missing number, 19 is a hydraulic cylinder that moves the rear and front bearing parts 5, 7, and 8 left and right, and 20 is the same hydraulic cylinder and bearing parts 5, 7, and 8.
21 is a ball link that connects the link with the bearing parts 5, 7, 8, 22 is a universal joint that connects the link 20 with the rod of the hydraulic cylinder 19, and 23 is the front bearing stand 4. a hydraulic cylinder that moves the
3' is a slide base on which the front bearing base 4 is mounted, 23'' is a hydraulic cylinder that slides the slide base in the left and right direction, 24 is an underframe, and 25 is a universal joint whose shaft length can be expanded and contracted to drive the upper roll 1. ,
26 is a universal joint whose shaft length expands and contracts to drive the lower roll 2; 28 is an intermediate bearing plate;
9, 30, 31 are universal joints 25,
26 is a gear fixed to the shaft end, 32 is an idle gear, 33 is a roll rotation drive motor, 34 is a motor shaft, and 35 is a gear that is attached to the motor shaft and meshes with the idle gear 32. The rear and front bearings 7 and 8 of the lower roll 2 and the bearing blocks 9 and 10 of the upper roll 1 support the roll ends with spherical bearings to allow for small vertical and horizontal inclinations of the roll. .

In the cylindrical bending work in this embodiment, first, the hydraulic cylinder 19 for moving the lower roll 2 is moved by the same stroke amount to maintain the lower roll 2 in parallel while adjusting the interval between them. Activate the bearing blocks 9 and 10.
The lower roll 2 and upper roll 1 are brought into the required dimensional positional relationship that matches the curvature of the cylinder by moving and adjusting the height while maintaining the roll horizontally (see Fig. 5). After that, when the motor 33 is operated, the motor shaft 34, gear 35, gears 29, 30, 31, and idle gear 32
The motor power is transmitted to upper roll 1 and lower roll 2 through
The upper and lower rolls 1 and 2 rotate. When the plate material M is inserted between the rolls, the plate material M is fed by the rolls and bent by the upper roll 1 and the lower roll 2. The roll is rotated forward or backward depending on the state of the bend, and is bent to the required curvature while reciprocating at the same location many times.

Next, the end bending operation is performed by inserting the end portion of the plate material M with the parallel lower roll 2 and upper roll 1 as shown in FIG. 6, with the radius of curvature made small.
In the case of the end bending of both ends with different diameters, as shown in Fig. 7, the lower roll 2 is made into an eight-shaped shape, and the upper roll 1 is set at a predetermined height and the end of the plate material M is inserted into this, and the plate material is bent in the same way as the end bending. It can be bent so that the radius of curvature changes continuously at the front and rear ends of M.

In the conical bending work, the lower roll 2 is expanded into a figure eight shape,
Further, the upper roll 1 is tilted and arranged so that the side where the lower roll 2 is open is higher and the side where the lower roll 2 is closed is lower (see FIG. 8). If the fan-shaped plate material M is inserted between the rolls in this arrangement, it can be bent into a conical tube with a continuously changing curvature, with the closed side of the rolls having a small diameter and the open side having a large diameter.

In the elliptical bending work, the plate material M is inserted between the lower roll 2 and the upper roll 1, and then depending on the position of the plate material in the feeding direction, the bending curvature by the lower roll 2 and the upper roll 1 is the small diameter R ₁ and the large diameter of the ellipse. The plate material (M) can be bent into an elliptical shape by changing it so that _R2 . (See Figures 10 and 11).

Next, a description will be given of the bending work of small objects using the apparatus of this embodiment and the bending copy mold shown in FIGS. 12 to 21.

The roll mounting position of the bending copying molds 40 to 47 may be either in the center or near the shaft end.

In the figure, 40 is a convex mold for molding the drum-shaped cylinder 50;
41 is the concave mold, 42 is the concave mold for molding the drum-shaped cylinder 51, 43 is the convex mold, and 44 is the 19th mold.
The flanged cylinder 52 shown in the figure, a stepped roll-shaped convex mold for bending copper into a cylindrical body with other bent parts,
Reference numeral 45 designates a stepped roll-shaped concave mold, and 46 and 47 designate roll-shaped molds having corrugated irregularities on their surfaces, which are used for the corrugated cylindrical bending operation.

In the case of bending the drum-shaped cylinder 50, a convex mold 40 is attached to the lower roll 2 and a concave mold 41 is attached to the upper roll 1, as shown in FIG.
15 and rotate the roll, it can be bent into a drum-shaped cylinder 50 as shown in FIG.

In the case of bending the drum-shaped cylindrical body 51, as shown in FIG. 16, by attaching the concave mold 42 to the lower roll 2 and the convex mold 43 to the upper roll 1, and inserting the short plate material M,
It can be formed into a drum-shaped cylinder 51 as shown in FIG.

In the case of shaped copper bending work, a convex mold 4 with steps that follows the shape of the plate material with bent parts such as L-shape, H-shape, U-shape, etc.
4 to the lower roll 2, and the concave mold 45 to the upper roll 1.
If the plate member M with the bent portion is inserted to match the step, the flanged cylinder 52 can be formed as shown in FIG. 19 (see FIG. 18).

In the case of corrugated cylindrical bending work, molds 46 and 47 with corrugated surfaces are attached to the lower roll 2 and upper roll 1, and a corrugated plate is inserted between these rolls to form the second mold.
A corrugated cylinder as shown in Figure 1 can be manufactured (20th
(see figure).

(Effects of the Invention) As described above, according to the present invention, since the front, rear, left, and right bearing parts of the lower roll are independently movable in the left and right directions, the radius of curvature of bending can be freely changed. Cylindrical bending, end bending, and elliptical bending can be done with one machine, and since the curvature can be changed in the front and rear directions, conical bending can also be done easily.

Furthermore, if you attach the bending mold to the roll, it will be shaped like a drum.
It is also possible to easily form drum-shaped, wavy cylinders, and cylinders with steps and bends.

Furthermore, since the front bearing pedestal of the upper roller is movable forward and in the left and right directions, the front bearing pedestal can be moved to a position away from the end of the roller.
Therefore, the plate material bent into a cylindrical or conical shape can be taken out from the end of the roller, making it easy to take out the product.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing an embodiment of the bending roll device, Fig. 2 is a front view of the same, Fig. 3 is an explanatory diagram showing the gear transmission mechanism for driving the roll, and Fig. 4 is a state of cylindrical bending. Figure 5 is an explanatory diagram showing the state of cylindrical bending, Figure 6 is an explanatory diagram showing the state of end bending, and Figure 7 is the position of the front and rear rolls when the ends are bent at different diameters. Explanatory diagram showing the relationship, No. 8
The figure is an explanatory diagram showing the positional relationship of rolls in conical bending, Figure 9 is a perspective view showing a processed product of conical bending, and Figure 10 is an explanatory diagram showing the positional relationship of rolls on the circumference of the minor axis and major axis in elliptical bending. Figure, 1st
Figure 1 is a perspective view showing a processed product of elliptical bending, Figure 12
The figure is an explanatory diagram showing drum-shaped tube bending using a bending copying die, FIG. 13 is a cross-sectional view taken along line A-A in FIG. 12, and FIG. 14 is a cross-sectional view taken along line B-B in FIG. 12. Fig. 15 is a perspective view showing the processed drum-shaped cylinder product, Fig. 16 is an explanatory diagram showing spherical bending processed into the drum-shaped cylinder using a bending copy mold, and Fig. 17 is the processed drum-shaped cylinder product. FIG. 18 is an explanatory diagram showing shape copper bending for processing a flanged cylinder using a bending copying die; FIG. 19 is a cross-sectional view showing the processed flanged cylinder. , FIG. 20 is an explanatory view showing cylindrical bending of a corrugated sheet using a bending copying die, and FIG. 21 is a perspective view showing the processed corrugated cylinder. 1... Upper roll, 2... Lower roll, 3... Rear bearing stand, 4... Front bearing stand, 5... Rear bearing part,
7, 8... Front bearing part, 9, 10... Bearing block, 11, 12... Window part, 13, 14... Hydraulic cylinder, 15-17... Sliding surface, 19... Hydraulic cylinder, 20 ...Link, 21...Beaulink, 22...Universal joint, 23...
Hydraulic cylinder, 24... Underframe, 25-26...
Universal joint, 28... intermediate bearing plate,
29-31...Gear, 32...Idle gear, 3
3...Motor, 34...Motor shaft, 35...Gear, M...Plate material.

Claims (1)

[Claims] 1. In a bending roll device in which a plate material is inserted into an upper roll whose vertical position is freely adjustable and a pair of left and right lower rolls, and the three rolls are rotated to bend the plate material, the lower roll The front, rear, left, and right bearings of the roller are independently movable in the left and right directions, and the front bearing stand supporting the upper roller is provided so as to be movable forward and in the left and right directions, so that the front bearing stand is separated from the front end of the upper roller. A bending roll device characterized by being able to move to left and right positions. 2. The bending roll device according to claim 1, further comprising a bending mold that fits into the pair of lower roll and upper roll. 3. The bending roll device according to claim 2, wherein the bending roll device is used for forming a corrugated cylindrical cylinder, wherein the surface of the bending mold is formed with corrugated irregularities. 4. The bending roll device according to claim 2, which is used for bending molded copper, in which a step is provided on the outer diameter of the bending copying mold. 5. The bending roll device according to claim 2, which is used for spherical bending, in which the outer diameter of the bending mold is continuously changed.