JPH07100180B2 - Metal plate forming equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal plate forming apparatus for forming a predetermined shape on both sides of a metal plate using a forming roll, and particularly when the bending point of the metal plate gradually changes. also relates to automatically metal plate molding apparatus capable of performing the bending of the bending predetermined shape is tapered while following the molding point.

[0002]

2. Description of the Related Art Conventionally, when performing a predetermined bending process on both side portions (flange) of a metal plate, a pair of upper and lower molds for carrying while sandwiching the metal plate and a plurality of stages fixed on both sides of the upper and lower molds are used. A roll forming apparatus is generally used that is provided with a forming roll that determines a bending forming point on both sides of a metal plate between a pair of rolls and performs a predetermined bending process.

In such a roll forming apparatus , a metal plate is conveyed while being sandwiched between a pair of upper and lower dies, and both sides of the metal plate are inserted between the forming rolls during the conveyance of the metal plate. A predetermined bending process is sequentially performed from the outer side on both side portions of the metal plate as the bending roll is determined between the forming rolls and the forming rolls from the first stage to the subsequent forming rolls are determined.

[0004]

However, in the conventional roll forming apparatus described above, the bending forming point of the metal plate is determined between the forming rolls in each of the plurality of stages. It is used when bending is performed without changing the points on both sides of the metal plate. Further, since each forming roll is fixedly arranged in the forming device and cannot be flexibly moved during the bending process of the metal plate, it is not possible to perform the bending process while changing the bending forming point. Not intended.

Therefore, when performing a predetermined bending process on both sides of a metal plate whose both sides are not formed in parallel (for example, a metal plate whose both sides are formed in a tapered shape), the conventional roll forming apparatus described above is used. It cannot be uniformly bent. Considering the inconveniences described above
Then change the bending point on both sides of the metal plate.
As a device for forming a tapered plate material with an irregular cross section,
For example, JP-A-59-179225 and JP-A-60.
-30527, JP-A-60-223617
Describes a roll forming apparatus. That is, each publication
Support a pair of drive shafts between the opposite stands.
Therefore, it is necessary to provide a fixed roll piece on this pair of drive shafts.
Next to each fixed roll piece,
And the flange of one moving roll piece
The seat cam by various mechanisms while engaging with the guide groove of the
By moving each fixed roll piece and each moving low
Both sides of the plate are bent through the cooperation of the lever pieces.
A roll forming device for forming a tapered plate material is described.
ing. However, in such a roll forming device,
Each moving roll piece has a groove shape of the guide groove of the seat cam.
Each fixed row is configured to be movable according to
The lever piece is fixed to each drive shaft and cannot be moved.
Is. Therefore, one side of the plate material is provided with each moving roll piece.
Can be bent to form a taper, while the plate
On the other side of the material, each fixed roll piece is fixedly installed.
Due to the fact that it is bent, it is bent into a taper shape
I can't. As a result, the
Depending on the roll forming device, the same
Sometimes it is not possible to bend into a taper shape
Is. Regarding this point, install each fixed roll piece on the drive shaft.
It is arranged so that it can move at the same time and tapers on both sides of the plate at the same time.
It may be possible to bend it into a curved shape, but in such cases
Requires a new seat cam, and
The overall structure of the molding equipment becomes complicated and the cost rises.
There is a problem that invites. In addition, roll forming of the above publications
For the plate material used in the device, please refer to the attached drawings of each publication.
(See FIG. 3 of JP-A-59-179225, JP-A-6-62.
FIG. 5 of JP-A-0-30527, JP-A-60-2236.
(See FIG. 5 of Japanese Patent Publication No. 17).
There is a taper on one side of the plate material through each fixed roll piece.
Non-existent bending is applied, and the other side of the plate is
Bending in a taper shape via the moving roll piece and the seat cam
It is something that is done. However, the roll forming device
In the table, each moving row is attached to only one side edge of the plate.
Move the lever piece to perform taper-shaped bending
Therefore, as the plate material moves as each moving roll piece moves,
There is a possibility that it will shift in the
In some cases, inconvenience may occur in forming the sheet material. This
Distortion is inevitably generated in the tapered bending part.
Depending on the object to which such molded plate material is applied,
There is also a risk of causing various inconveniences. The present invention has been made to solve the problems of the prior art, one
Metal plate through a pair of first molding roll and second molding roll
When performing bending on both sides of the
Tapered first cams on both sides of the first drive roll
It is arranged to follow the surface so that it can move back and forth, and each second molding
Roll the taper on each side of the second drive roll.
It is arranged to follow the second cam surface so that it can move back and forth.
First roll surface of moving roll and second roll of second drive roll
As a metal plate that is sandwiched between the surface and the
A taper corresponding to the taper of the roll surface and the second roll surface
By using a metal plate over is formed, the metal plate while following the flexible metal plate in a automatically the bending mold point also the song <br/> up molding points on both sides is gradually changed It is an object of the present invention to provide a metal plate forming apparatus capable of performing a bending process of a predetermined tapered shape on both sides.

[0006]

Means for Solving the Problems The present invention for achieving the above object, a drive unit, having a first roll surface around while being rotated by the drive means, first roll surface
The first cam surface on each side of the peripheral edge is formed in the first roll
The surface is tapered on both sides via each first cam surface when it is deployed
A first drive roll formed on the first roll, and a second roll face that is driven to rotate in synchronization with the first roll and is in contact with the first roll face on the periphery. Second cam surfaces are formed on both sides of the side edge , and the second roll surface is
Each of them corresponds to the taper of the first roll surface at the time of its expansion.
A second drive roll, both sides of which are tapered via a second cam surface, a pair of first molding rolls arranged so as to be capable of advancing and retracting following each of the first cam surfaces, and each of the first moldings. First urging means for urging the roll in the direction of the first cam surface, a pair of second molding rolls arranged so as to be capable of advancing and retracting following each of the second cam surfaces, and each of the second molding rolls. And a second urging means for urging the first drive surface toward the second cam surface, the metal plate being sandwiched between the first roll surface of the first drive roll and the second roll surface of the second drive roll. And on both sides of it
Each taper on both sides of the first roll surface and the second roll surface
Bending part with taper corresponding to
Each of the metal plates consisting of a flat plate portion that connects the buffing portions
Transfer to the 1st molding roll and the 2nd molding roll, 1st molding
Each bent portion of the by Ri metal plate roll and the second forming rolls
The is configured to molding into a predetermined shape.

[0007]

In the metal plate molding apparatus according to the present invention having the above-mentioned structure, molding should be performed between the first roll surface of the first drive roll and the second roll surface of the second drive roll. a metal plate
On both sides of the first roll surface and the second roll surface
A taper corresponding to each taper on both sides is formed
A bent part and a flat plate part that connects the bent parts
In the state where the metal plate composed of the two is sandwiched, both the first drive roll and the second drive roll are rotationally driven in synchronization via the drive means. As a result, the metal plate becomes the first drive roll of the first drive roll.
It is conveyed in a certain direction via the roll surface and the second roll surface of the second drive roll . Also, the first drive roll and the second
While the drive rolls are being rotationally driven, the pair of first forming rolls are flexibly formed on the first cam surfaces formed on both sides of the peripheral side edge of the first drive rolls via the biasing force of the first biasing means.
The pair of second molding rolls flexibly follow the second cam surface formed on the peripheral edge of the second drive roll through the urging force of the second urging means. Be advanced and retreated. At this time, the first roll surface is
Both sides are tapered through each first cam surface,
Also, the second roll surface has a taper on the first roll surface when it is deployed.
Corresponding to each side, each side is tapered via the second cam surface.
Is made, and therefore each first forming roll is a first roll.
As it moves back and forth along the taper on both sides of the surface
In addition, each second forming roll has a tape on both sides of the second roll surface.
It will be moved back and forth along the supermarket.

Therefore, while the metal plate is being conveyed by the first drive roll and the second drive roll as described above, the both side portions of the metal plate are respectively the first forming roll and the second forming roll.
It is inserted between the forming rolls, and the bending portions on both sides of the metal plate are formed into a predetermined shape by the cooperation of both the first forming roll and the second forming roll.

As described above, each first molding roll can follow the first cam surface of the first drive roll, and each second molding roll can follow the second cam surface of the second drive roll to move back and forth. Since it is said that each bending process formed on both sides of the metal plate
When the molding point bending definitive the coated portion is continuously changed even bend the molding points continuously follow the bending molding point of each bent portion is determined by the respective first forming rolls and the second molding roll Therefore, it is possible to form into a predetermined shape while changing the bending point in each bending part on both sides of the metal plate.
It is something. In addition, as a metal plate to be molded
The first roll surface and the first roll surface of the first drive roll on both sides.
On each side of the second roll surface of the two drive roll
Bending part with taper corresponding to each taper
And a metal plate including a flat plate portion that connects between the bending portions
Is used in each bending part,
If the metal plate is stretched or compressed more than necessary,
There is no strain, and therefore strain is generated in each bent part.
It is possible to obtain a suitable molded product.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a front sectional view schematically showing a metal plate molding apparatus according to this embodiment,
The metal plate molding apparatus 1 is placed and fixed on the bed 2. The metal plate molding apparatus 1 has a pair of machine frames 3 and 4 (a pair of left and right in FIG. 1), and the machine frames 3 and 4 are arranged on the bed 2 in a fixed positional relationship with each other. ing.
A shaft hole 3A is formed at an upper position of the left machine casing 3, and a shaft hole 3B is formed at a lower position thereof. Further, a shaft hole 4A is formed at an upper position of the right machine frame 4 so as to face the shaft hole 3A of the machine frame 3, and a shaft hole 4A is provided at a lower position thereof so as to face the shaft hole 3B of the machine frame 3. 4B is drilled.

A first drive roll shaft 5 is provided in each shaft hole 3A, 4A.
Is rotatably inserted, and a bolt 6 for restricting the lateral movement of the first drive roll shaft 5 is screwed to one end (the left end in FIG. 1) of the drive roll shaft 5. A drive gear 7 is fixed to the other end of the first drive roll shaft 5. A first drive roll 8 (described later) is fixed to an intermediate position between the left machine frame 3 and the right machine frame 4 on the first drive roll shaft 5, and the first drive roll 8 is the first drive roll 8. It is rotationally driven according to the rotation of the drive roll shaft 5.

Further, the first holes are provided in the respective shaft holes 3B, 4B.
A second drive roll shaft 9 similar to the drive roll shaft 5 is rotatably inserted, and one end (left end in FIG. 1) of the second drive roll shaft 9 has a left side and a right side of the second drive roll shaft 9. A bolt 10 for restricting movement in the direction is screwed, and a drive gear 11 meshing with a drive gear 7 fixed to the first drive roll shaft 5 is fixed to the other end of the second drive roll shaft 9. ing. Further, a second drive roll 12 (described later) is fixed at an intermediate position between the left machine frame 3 and the right machine frame 4 on the second drive roll shaft 9, and the second drive roll 12 is driven by the second drive roll 12. It is driven to rotate in accordance with the rotation of the roll shaft 9. A drive motor M is connected to the first drive roll shaft 5 via a speed reduction mechanism G.
Is rotated, the rotation is transmitted from the reduction mechanism G to the first drive roll shaft 5 to rotate the first drive roll shaft 5, and the rotation of the first drive roll shaft 5 is driven by the drive gears 7 and 11. Is transmitted to the second drive roll shaft 9 via
The drive roll shaft 9 is rotated in synchronization with the first drive roll shaft 5.

The first drive roll 8 has a first roll surface 8A on its peripheral surface, and the second drive roll 12 has a second roll surface 12A on its peripheral surface. The first roll surface 8A and the second roll surface 12A are in contact with each other as shown in FIG.
The drive roll 12 is rotationally driven in synchronization with each other.

Next, the structure of the first drive roll 8 will be described with reference to FIGS. 2, 3 and 4. 2 is a plan view of the first drive roll 8, FIG. 3 is a side view of the first drive roll 8, and FIG. 4 is a cross-sectional view of the first drive roll 8. In these figures, the first drive roll 8 has a disk shape, and a bearing portion 8B which is inserted into the first drive roll shaft 5 is formed in the center thereof. The bearing portion 8B is inserted into the first drive roll shaft 5 and fixed to the first drive roll shaft 5 via a screw or the like.

Further, the disk portion 8C is continuous with the bearing portion 8B.
Is integrally formed, and a roll portion 8D having the first roll surface 8A is formed around the disk portion 8C. The same first cam surface 8E is formed on each of the peripheral side edges on both sides of the roll portion 8D.
As will be described later, the first molding roll 17 is always brought into contact with the cam surface 8E, and moves back and forth following each first cam surface 8E.

FIG. 5 shows the relationship between the roll surface 8A of the roll portion 8D of the first drive roll 8 and the respective first cam surfaces 8E.
It becomes like (A). FIG. 5 (A) is a development view showing the roll surface 8A of the roll portion 8D in a developed manner. As is apparent from FIG. 5 (A), the first cam surface 8E having a tapered shape is formed on both side edges of the roll surface 8A. (In FIG. 5A, the width gradually increases from the left side to the right side).

Next, the structure of the second drive roll 12 will be described with reference to FIGS. 6, 7 and 8. 6 is a plan view of the second drive roll 12, and FIG. 7 is a second drive roll 12
And FIG. 8 is a sectional view of the second drive roll 12.
In these drawings, the second drive roll 12 has basically the same configuration as the first drive roll 8, and the second drive roll 12 is formed on the peripheral side edges on both sides of the roll portion 12D as described later. The only difference is that the shape of the cam surface 12E is slightly different from that of the first cam surface 8E of the first drive roll 8. That is, the second drive roll 12 has a disk shape, and a bearing portion 12B which is inserted into the second drive roll shaft 9 is formed in the central portion thereof. This bearing 12
B is inserted into the second drive roll shaft 9 and is fixed to the second drive roll shaft 9 via a screw or the like.

The disc portion 1 is continuous with the bearing portion 12B.
2C is integrally formed, and a roll portion 12D having the second roll surface 12A is formed around the disk portion 12C. The same second cam surface 12E is formed on the peripheral side edges on both sides of the roll portion 12D, and the second molding roll 22 is always in contact with each second cam surface 12E as described later. It moves back and forth following each second cam surface 12E.

The roll portion 12 of the second drive roll 12
The relationship between the roll surface 12A of D and each second cam surface 12E is shown in FIG. 5 (B). FIG. 5B shows the roll unit 1.
FIG. 6 is a development view showing the roll surface 12A of 2D in a developed manner, and as is apparent from FIG. 5B, both side edges of the roll surface 12A have tapered second cam surfaces 12E (in FIG. 5B, The width gradually increases from the left side to the right side). The second cam surface 12E basically has the same tapered shape as the first cam surface 8E formed on the first drive roll 8, but is formed slightly narrower.

Further, returning to FIG. 1 and continuing the description, between the shaft holes 3A and 3B formed in the left machine casing 3, roller receiving members 13 and 14 are provided in two upper and lower stages, respectively. Further, between the shaft holes 4A and 4B formed in the right machine frame 4, roller receiving members 15 and 16 are provided in upper and lower two stages so as to face the roller receiving members 13 and 14, respectively.

The roller receiving members 13 and 15 are arranged so as to face each other and have the same structure. That is, a roller support member 20 including a shaft 18 that rotatably supports the first molding roll 17 and a base portion 19 integrally formed with the shaft 18 is provided on each of the roller receiving members 13 and 15 in the first drive roll 8. The roller support member 20 is arranged so as to be capable of moving forward and backward (moving forward and backward in FIG. 1).
Is a spring groove 1 formed in each roller receiving member 13, 15.
It is urged toward the first drive roll 8 via each compression spring 21 arranged between 3A and 15A and the spring groove 20A formed in the roller support member 20. At this time, the first drive roll 8 in each first forming roll 17
The end surface 17A on the side (see FIGS. 9 to 11) is brought into contact with the first cam surfaces 8E formed on both sides of the roll portion 8D of the first drive roll 8 described above. while abutting the first cam surface 8E constantly through the biasing force of the compression spring 21 is what is retractable in accordance with the rotation of the first drive roll 8 following the flexible.

Further, like the roller receiving members 13 and 15, the roller receiving members 14 and 16 are arranged so as to face each other, and have the same configuration. That is, a roller support member 25 including a shaft 23 that rotatably supports the second molding roll 22 and a base portion 24 that is integrally formed with the shaft 23 is provided on each of the roller receiving members 14 and 16 in the second drive roll 12. The roller support member 25 is disposed so as to be able to move forward and backward (moves forward and backward in FIG. 1) and has a spring groove 14A formed in each roller receiving member 14, 16.
16A and a spring groove 25A formed in the roller supporting member 25
It is urged toward the second drive roll 12 via a compression spring 26 disposed between and. At this time,
The end surface 22A (see FIGS. 9 to 11) of each of the second molding rolls 22 on the side of the second drive roll 12 contacts the second cam surface 12E formed on both sides of the roll portion 12D of the second drive roll 12 described above. The second molding rolls 22 are constantly contacted with each other by the biasing force of the compression spring 26.
The following the flexible while abutting the cam surface 12E 2
The drive roll 12 can be moved forward and backward according to the rotation thereof.

Here, the molding surface 17B of each of the first molding rolls 17 (see FIGS. 9 to 11) and each of the second molding rolls 2 are formed.
The second molding surface 22B (see FIG. 9 to FIG. 11) is formed so as to coincide with each other, and when the first and second molding rolls 17 and 22 rotate, the respective molding surfaces 17B and 22B are The bending work is performed along the continuously changing bending molding points P1 and P2 on both sides of the metal plate K in cooperation with each other (this point will be described later).

In addition, in the metal plate molding apparatus 1 having the above-described structure, each of the first molding roll 17 and the second molding roll 17
Le 22, as is known in the conventional roll molding apparatus, a direction perpendicular to the plane of FIG. 1 molded
A plurality of stages (for example, 10 stages) are continuously arranged in the line direction , and each of the first forming rolls 17,
The molding surface 17B and the molding surface 22B of the second molding roll 22 are formed so as to coincide with each other, while the molding surface 17B of each of the first molding roll 17 and the second molding roll 22 is formed.
22B has a slightly different shape for each step. Then, by passing the metal plate K through the metal plate forming apparatus 1 at each stage, the bending forming process is gradually performed along the bending forming points P1 and P2 on both sides of the metal plate K.

Next, the operation of the metal plate molding apparatus configured as described above will be described with reference to FIGS. FIG. 9 is an explanatory view schematically showing a state where the bending process is started along the bending forming point P 2 of the metal plate K, and FIG. 10 is a state where the bending process is started along the bending forming point P 1 of the metal plate K. 12 is an explanatory view schematically showing the above, FIG. 11 is an explanatory view schematically showing a state in which the bending process of the metal plate K is finished, FIG.
12A is a plan view of the metal plate K before starting the bending process, FIG. 12B is a plan view of the metal plate K after the bending process, and FIG. 12C is a metal plate K after the bending process. FIG. 12D is an enlarged end view of the metal plate K that has been bent, as seen from the A side, and FIG.

[0026] First, explaining with reference to FIG. 12 (A) for the metal plate K which is an object to be molded object, the metal plate K is at both
At the side portion, the roll surface 8 of the first drive roll 8 described above
The metal plate K has a shape (similar shape) formed by forming a taper basically similar to the expanded shape of A, and the metal plate K has a bending molding point P1 (each first molding roll 17) as described later.
Of the second molding roll 22 and the molding surface 17B of the second molding roll 22 and gradually changes along the taper)
And a bending molding point P2 located outside the bending molding point P1 and parallel to the bending molding point P1.
(Similar to the bending molding point P1, the molding surface 17B of each first molding roll 17 and the molding surface 22 of the second molding roll 22.
(Determined by B) and the bending molding process is performed. In addition, on each side of the metal plate,
Scraping point P1 (indicated by the inner dotted line in FIG. 12A)
The outer part of the
It exists between the bending points P1 and connects the bending parts.
The part to do becomes a flat plate part.

Although only one metal plate K is shown in FIG. 12 (A) for ease of understanding, as the metal plate K, a large number of metal plates K are continuously formed into a strip shape and roll-shaped. The one that is wound on is used. If the metal plate K thus continuously formed in a strip shape is used,
As described above, the first driving roll 8 and the second driving roll 12
The metal plate K can be continuously bent due to the continuous rotation of the metal plates.

Next, the bending process of the metal plate K will be described. First, the drive motor M is rotationally driven, and the first drive roll shaft 5 and the second drive roll shaft 9 are rotated via the reduction mechanism G, the drive gear 7, and the drive gear 11 to rotate the first drive roll 8 and the second drive roll 8. The drive rolls 12 and 12 are set in the state shown in FIG. At this time, the first drive roll 8 and the second drive roll 12 may be automatically set to the state shown in FIG. 1 by controlling the rotation of the drive motor M using a limit switch or the like. Then, the metal plate K to be molded is placed on the first drive roll 8 and the second drive roll 8 from the wide side.
It is inserted between the drive roll 12. At this time, the metal plate K
The bend forming point P 2 at is aligned with the edge of the first cam surface 8E of the first drive roll 8.

As described above, the metal plate K is attached to the first drive roll 8
And the second drive roll 12 are set, the rotational drive of the drive motor M is started. The rotation of the drive motor M is reduced by the reduction mechanism G and transmitted from the drive gear 7 to the first drive roll shaft 5, and also transmitted from the drive gear 7 to the second drive roll shaft 9 via the drive gear 11. .
As a result, the first drive roll shaft 5 and the second drive roll shaft 9 are rotated in synchronization with each other, and as a result, the first drive roll 8 and the second drive roll 12 are rotated in synchronization with each other. Then, as the first drive roll 8 and the second drive roll 12 are rotated, the metal plate K is sequentially fed in the forming line direction (direction perpendicular to the paper surface in FIG. 1).

While the metal plate K is being sent in this way,
Each bending part on both sides of the metal plate K is passed between the first forming roll 17 and the second forming roll 22, and the bending parts on both sides of the metal plate K are passed through the first forming roll 17 during the passage. By the cooperation of the molding surface 17B of 17 and the molding surface 22B of the second molding roll 22, bending is performed at the bending molding point P 2 . This molded state is shown in FIG.

At this time, the end surface 17 of the first molding roll 17
A is the first drive roll 8 via the biasing force of the compression spring 21.
Is always in contact with the first cam surface 8E of the
Forming rolls 17 is intended to be advanced and retracted along the molding point P 2 bent while following the flexible to the first cam surface 8E. The end surface 22A of the second molding roll 22 is always in contact with the second cam surface 12E of the second drive roll 12 via the urging force of the compression spring 26. While flexibly following the cam surface 12E, the cam surface 12E is moved back and forth along the bending molding point P 2 due to the interaction with the first molding roll 17. In this way, since both the first forming roll 17 and the second forming roll 22 are moved back and forth along the bending forming point P 2 , both side portions of the metal plate K are formed on the forming surface 1 of the first forming roll 17.
7B and the molding surface 22B of the second molding roll 22 cooperate with each other to perform continuous and accurate bending at the bending molding point P 2 .

As is well known, since the metal plate K has a property (spring back) in which the deformation returns when the bending moment is removed by its elastic restoring force (spring back), the bending process of the metal plate K at the bending forming point P 2 is performed. Is the page in Figure 1.
Is performed over a plurality of steps (stages) along a molding line direction perpendicular to the.

After the bending of the metal plate K at the bending forming point P 2 is completed, the bending at the bending forming point P 1 is subsequently performed. In this step, the first part formed on the roll portion 8D of the first drive roll 8 is
The cam surface 8E is aligned with the bending molding point P2 of the metal plate K, and the end surface 17A of the first molding roll 17 is bent through the biasing force of the compression spring 21 while being constantly in contact with the first cam surface 8E. Flexible along the molding point P2
It will be moved forward and backward. In addition, the second molding roll 22
End surface 22A of the second drive roll 12 is a roll portion 12D.
While being constantly in contact with the second cam surface 12E formed on the second cam surface 12E, the flexing force is applied to the second cam surface 12E via the biasing force of the compression spring 26.
While following the sibble, it is moved back and forth along the bending forming point P2 by the interaction with the first forming roll 17.

The bent portions on both sides of the metal plate K are passed between the first molding rolls 17 and the second molding rolls 22 having the above-mentioned mutual relations, and during the passage, The molding surface 17B of the first molding roll 17 and the second molding roll 22
Bending molding point P 1 in cooperation with the molding surface 22B of
Bending is performed along. This molding state is shown in Figure 10.
Is shown in. Here, the bending process of the metal plate K at the bending forming point P 1 is similar to the bending process at the bending forming point P 2 and a forming die perpendicular to the paper surface in FIG.
It is carried out over a plurality of steps along the direction .

Further, the bending of the metal plate K proceeds, and the bending of the metal plate K is completed in the final step. Bending in the final step will be described. In this final step, the roll portion 12D of the second drive roll 12
The second cam surface 12E formed on the metal plate K is aligned with the bending molding point P 1 of the metal plate K, and the end surface 22A of the second molding roll 22 is always in contact with the second cam surface 12E, and the compression spring 26 Bending point P through the urging force of
It goes back and forth along 1 . Further, the end surface 17A of the first molding roll 17 has a roll portion 8 of the first drive roll 8.
The first cam surface 8E formed on D is always in contact with the first cam surface 8E via the urging force of the compression spring 21 and the bending molding point P 1 by the interaction with the second molding roll 22. It is something that is moved back and forth along.

In the final step, the bent portions on both sides of the metal plate K are passed between the first forming roll 17 and the second forming roll 22 which require the above-mentioned mutual relation, and during the passage, the first forming roll is formed. Forming surface 17B of roll 17 and second
The final bending process is performed along the bending forming point P 1 in cooperation with the forming surface 22B of the forming roll 22. This molded state is shown in FIG.

The metal plate K whose both sides are bent as described above is sequentially discharged to the outside of the metal plate molding apparatus 1 by the first drive roll 8 and the second drive roll 12 in the final step. Each piece is continuously cut into a predetermined length (see FIG. 12B) through a cutting machine (not shown).
As a result, the metal plate K having a predetermined bending process on both sides is formed. As shown in FIGS. 12B, 12C, and 12D, the metal plate K that has undergone the bending process has both side parts formed into a tapered shape as with the original metal plate K, and at the bending forming points P1 and P2, it faces inward. It will be molded so as to have a bent portion Q that is uniformly bent. At this time, the metal plate K is
In addition, as described above, the roll surface of the first drive roll 8
8A and the roll surface 12A of the second drive roll 12 respectively
Basically, the same taper as the expanded one is formed
Therefore, the metal plate is stretched more than necessary at each bending part.
Distortion may occur without being stretched or compressed.
And can be reliably prevented.

As described in detail above, in the metal plate forming apparatus according to this embodiment, the first drive roll 8 having the first cam surfaces 8E formed on the peripheral side edges on both sides of the roll portion 8D is first
It is fixedly arranged on the drive roll shaft 5, and the roll portion 12
The second drive roll 12 having the second cam surfaces 12E formed on the peripheral side edges on both sides of D is arranged so that the roll surface 8A of the first drive roll 8 and the roll surface 12A of the second drive roll 12 contact each other. , The roller receiving members 1 fixedly arranged on the second drive roll shaft 9 and further fixed to the machine frames 3 and 4.
The end surface 17A of each first molding roll 17 abuts on and follows the first cam surface 8E via the biasing force of the compression spring 21 while the pair of first molding rolls 17 face each other. Are arranged so that they can move forward and backward, and each roller receiving member 14, 1
6, a pair of second molding rolls 22 are opposed to each other, and each second molding roll 2 is pressed by the urging force of the compression spring 26.
The second end surface 22A is arranged so as to come into contact with the second cam surface 12E and follow the second cam surface 12E so as to be movable back and forth. ,
By rotating 9 synchronously, the metal plate K is conveyed by the first and second drive rolls 8 and 12, while the first forming roll 17 and the second forming roll 22 cooperate with each other to form a tapered metal plate. Bending point P on both sides of K
Since the bending is performed along the bending points 1 and P2, even when the bending points P1 and P2 on the metal plate K gradually change, the bending points P are automatically changed.
It is possible to perform a predetermined tapered bending process on both sides of the metal plate K while following steps 1 and P2.

Further, in this embodiment, the first drive roll 8,
By rotating the second drive roll 12, the roll portions 8D and 12 provided on the first and second drive rolls 8 and 12, respectively.
Since the metal plate K is continuously conveyed via the roll surfaces 8A and 12A of D, the belt-shaped metal plate K can be continuously bent.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various improvements and modifications can be made without departing from the gist of the present invention. For example, in the above-described embodiment, each first spring is connected via each compression spring 21 and 26.
The forming rolls 17 and 22 are respectively connected to the first cam surface 8E of the first drive roll 8 and the second cam surface 12E of the second drive roll 12.
The metal plate K is bent while contacting and following the first and second drive rolls 8 and 1 by numerical control using various control motors.
Obviously, it may be possible to move forward or backward with respect to 2.

[0041]

As described above, the present invention provides a pair of first
Both sides of the metal plate through the forming roll and the second forming roll
When performing bending work, first drive each first molding roll
Follows each tapered first cam surface on both sides of the roll
And arrange each second molding roll
Tapered second cams on both sides of the second drive roll
It is arranged to follow the surface so that it can move back and forth, and the first drive roll
Between the first roll surface of the and the second roll surface of the second drive roll
As a metal plate to be sandwiched between
And a taper corresponding to the taper of the second roll surface is formed
Bending molding ports on both sides
Even a metal plate with a gradually changing
While flexibly following the bending point, the metal plate
Performing a predetermined bending process on both sides
It is possible to provide a metal plate molding apparatus capable of performing the above.

[Brief description of drawings]

FIG. 1 is a front sectional view schematically showing a metal plate molding apparatus.

FIG. 2 is a plan view of a first drive roll.

FIG. 3 is a side view of a first drive roll.

FIG. 4 is a cross-sectional view of a first drive roll.

5A is a development view showing a roll surface of a first drive roll in a developed manner, and FIG. 5B is a development view showing a roll surface of a second drive roll in a developed manner.

FIG. 6 is a plan view of a second drive roll.

FIG. 7 is a side view of a second drive roll.

FIG. 8 is a sectional view of a second drive roll.

FIG. 9 is an explanatory diagram schematically showing a state in which bending work has started along a bending forming point P 2 of a metal plate.

FIG. 10 is an explanatory view schematically showing a state where the bending process is started along the bending forming point P 1 of the metal plate.

FIG. 11 is an explanatory view schematically showing a state in which the bending process of the metal plate is completed.

FIG. 12 (A) is a plan view of a metal plate before starting bending work, FIG. 12 (B) is a plan view of a metal plate after bending work, and FIG. 12 (C) ends bending work. 12D is an end view showing the enlarged metal plate as seen from the side A, FIG.
FIG. 6 is an enlarged end view of the metal plate after bending, as viewed from the B side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal plate forming apparatus 5 1st drive roll shaft 7 Drive gear 8 1st drive roll 8A Roll surface 8D Roll part 8E 1st cam surface 9 2nd drive roll shaft 11 Drive gear 12 2nd drive roll 12A Roll surface 12D Roll part 12E 2nd cam surface 17 1st molding roll 17A End surface 17B Molding surface 21 Compression spring 22 2nd molding roll 22A End surface 22B Molding surface 26 Compression spring K Metal plate M Drive motor P1, P2 Bending molding point

Claims (1)

[Claims] 1. A drive means and a first roll surface which is rotationally driven by the drive means and has a first roll surface around the first roll surface .
The first cam surface is formed on both sides of the peripheral edge of Lumpur surface, first
When the roll surface is unrolled, both sides are taped through each first cam surface.
A first drive roll formed on the taper and a second roll surface that is rotationally driven in synchronization with the first drive roll and that abuts on the first roll surface in the periphery . A second cam surface is formed on both sides of the peripheral side edge , and the second roll surface is the same as the first roll surface when the second roll surface is developed.
Corresponding to the taper, both sides are tapered via each second cam surface
A second drive roll formed on the base , a pair of first molding rolls arranged so as to be capable of advancing and retracting following each of the first cam surfaces, and each of the first molding rolls in the direction of the first cam surface. A first urging means for urging, a pair of second molding rolls arranged so as to be capable of advancing and retracting following each of the second cam surfaces, and each of the second molding rolls in the direction of the second cam surface. A metal plate sandwiched between a first roll surface of the first drive roll and a second roll surface of the second drive roll, the metal plate being provided with
On both sides of the first roll surface and on both sides of the second roll surface.
Bending process with taper corresponding to each taper
Gold consisting of a flat plate part that connects the work part and each bending part
Transfer the metal plate to the first molding roll and the second molding roll.
The metal plate by the first and second forming rolls.
A metal plate forming apparatus, which forms each bending portion into a predetermined shape.