JP6998779B2 - Bending roll machine - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Law Delivered to the Mukaishima Factory of Koshin Sangyo Co., Ltd. on August 31, 2017.

The present invention relates to a bending roll machine in which a plate material is sandwiched between a plurality of processing rolls and bent.

For example, curved metal plates are used for the side walls of ships and the hulls of bows and stern. Such a curved plate material is manufactured by using a bending roll machine in which the plate material is sandwiched between the first processing roll and the second processing roll and bent.

Further, in the bending roll machine, a support roll for contacting and supporting the second processing roll is provided so that the second processing roll does not bend when the load of the first processing roll acts on the plate material.

Patent Document 1 describes an eccentric boss attached to a support roll, a toothed adjustment plate attached to the shaft end of the eccentric boss, a gear mechanism that meshes with the toothed adjustment plate, and an eccentric boss via the gear mechanism. A bending roll machine including a rotating motor and adjusting the position of a support roll so as to come into contact with a bottom roll (second processing roll) by rotating an eccentric boss by a driving force of the motor is disclosed.

Japanese Unexamined Patent Publication No. 2004-34038

However, in the bending roll machine described in Patent Document 1, it is necessary to separately provide a gear mechanism and a motor in order to contact-support the second processing roll by the support roll, which causes an increase in manufacturing cost.

An object of the present invention is to provide a bending roll machine capable of reducing the bending of a second processing roll during bending while suppressing an increase in manufacturing cost.

The bending roll machine according to one aspect of the present invention includes a first processing roll that is supported so as to be vertically movable, a second processing roll pair that sandwiches and bends a plate material between the first processing rolls, and a second processing roll pair. A bending roll machine including a first support roll arranged close to each other and a roll support portion provided with a first roll position adjusting mechanism for adjusting the position of the first support roll, wherein the first roll position is adjusted. The mechanism is provided on both the roll support portion and the guide portion between the roll support portion and the guide portion on which the roll support portion is placed so as to be movable in the front-rear direction substantially parallel to the horizontal direction orthogonal to the first processing roll. On the other hand, a moving body that is sandwiched in a state where it can be moved in the front-rear direction and has a function of raising and lowering the roll support portion by changing the position in the front-rear direction with respect to the roll support portion, and a moving body in the front-rear direction with respect to the roll support portion. The roll support portion is raised by changing the position of the moving body by the position changing means, including the position changing means having a function of changing the position of the second processing roll pair, and the first support roll is applied to one of the rolls. The roll support portion is pushed out together with the moving body toward the other roll constituting the second processed roll pair by the reaction force acting on the first support roll from one roll as well as being brought into contact with the other roll. It is characterized in that the support rolls are brought into contact with each other.

In the bending roll machine according to one aspect of the present invention , the moving body may be provided with a drop-off prevention structure for preventing the moving body from falling off from the guide portion.

According to the bending roll machine according to one aspect of the present invention, the first support roll is pressed against one of the rolls constituting the second processing roll pair by changing the position in the front-rear direction of the moving body, and the reaction force thereof causes the first support roll. By pushing the roll support portion that pivotally supports the 1 support roll toward the other roll, both rolls constituting the second processed roll pair can be contacted and supported by the support roll. Therefore, both rolls constituting the second processing roll pair can be contact-supported by a single support roll without providing a drive motor or a gear mechanism. As a result, it is possible to reduce the bending of the second processing roll during bending while suppressing an increase in manufacturing cost.

According to the bending roll machine which is another aspect of the present invention, the second support roll is displaced to the position where it comes into contact with the second processing roll by rotating the tubular body with respect to the roll support portion, and the second support roll is used. The second support roll can be fixed to the roll support using a fixing plate so that the roll does not rotate with respect to the roll support. As a result, it is possible to reduce the bending of the second processing roll during bending while suppressing an increase in manufacturing cost.

It is an overall block diagram of the bending roll machine which is one Embodiment of this invention. It is a schematic diagram which shows the structure in the top view of the bottom roll pair and the support roll group included in FIG. 1. FIG. 3A is a partial enlargement showing a state of the support roll and the moving mechanism included in FIG. 1 as viewed from the front side. FIG. 3B partially shows a cross-sectional view taken along the line AA shown in FIG. 2 and a partially enlarged view showing the internal configuration of the shaft support portion provided on the roll support portion included in the cross-sectional view. It is a figure. FIG. 4A is a cross-sectional configuration diagram of a shaft support portion provided on the roll support portion shown in FIG. 3B. 4 (b-1) is a front view of the housing shown in FIG. 3 (b). FIG. 4 (b-2) is a cross-sectional view taken along the line BB shown in FIG. 4 (b-1). FIG. 4 (c-1) is a diagram showing a state in which the support roll is rotated downward by the second roll position adjusting mechanism shown in FIG. 3 (b). FIG. 4 (c-2) is a diagram showing a state in which the support roll is rotated upward by the second roll position adjusting mechanism shown in FIG. 3 (b). FIG. 5A is a diagram showing the configuration of the roll support portion before the installation of the bottom roll pair in the same manner as in FIG. 3B. FIG. 5B is a diagram showing a state in which the position change unit is operated from the state of FIG. 5A to raise the roll support portion to a position where the support roll comes into contact with one of the bottom rolls. FIG. 5 (c) is a diagram showing a state in which the roll support portion is further raised from the state of FIG. 5 (b) and the support roll is brought into contact with the other bottom roll. FIG. 6A is a diagram showing a mounting position of the fixing plate when the support roll is at a position separated from the bottom roll. FIG. 6B is a diagram showing a mounting position of the fixing plate when the support roll is in contact with the bottom roll.

A bending roll machine according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the direction parallel to the horizontal direction orthogonal to the top roll in the bending roll machine is referred to as "front-back direction X", and the horizontal direction parallel to the top roll is referred to as "left-right direction Y". Further, the vertical position of the floor surface is expressed as "floor level L".

FIG. 1 is an overall configuration diagram of a bending roll machine. As shown in FIG. 1, the bending roll machine 10 includes a gantry frame 14 having a handrail 12 or the like installed on the upper portion, an upper girder (girder) 16 supported by the gantry frame 14 so as to be able to move up and down, and an upper girder. It is provided with a lower girder 18 installed directly below the 16. The upper girder 16 is supported by the portal frame 14 so that both left and right ends can be raised and lowered, and the top roll (first processing roll) 20 and the support roll pairs 22, 24, and 26 that contact-support the top roll 20 are at the lower ends. It is provided in.

Like the upper girder 16, the lower girder 18 is supported at both left and right ends by the portal frame 14, and is installed in a buried state so that the upper surface thereof is slightly lower than the floor level L. The lower girder 18 includes a bottom roll pair (second processing roll pair) 30 that sandwiches and bends a plate material between the top roll 20 and the above-mentioned top roll 20, and a plurality of support roll groups 32, 34 that contact-support the bottom roll pair 30 from below. , 36 and roll support portions 42, 44, 46 that pivotally support the support roll groups 32, 34, 36, respectively, are provided on the upper surface.

Further, the bottom roll pair 30 is also pivotally supported by roll support portions 48A and 48B installed at both ends of the lower girder 18 in the same manner as the support roll groups 32, 34 and 36. The roll support portions 42, 44, 46, 48A, and 48B are connected to the moving mechanisms 52, 54, 56, 58A, and 58B arranged on the front surfaces of the roll support portions 42, 44, 46, 48A, and 48B. Each of the moving mechanisms 52, 54, 56, 58A, 58B is connected in series by a transmission shaft 66 connected to the drive motors 62, 64, and is rotationally driven by the drive motors 62, 64, and each roll support portion 42, It has a function of moving 44, 46, 48A, 48B in the front-back direction X. Since the roll support portions 42, 44, 46, 48A, 48B and their peripheral configurations are the same, only the roll support portions 42 and their peripheral configurations will be described below.

Here, FIG. 2 is a schematic configuration diagram of the bottom roll pair 30 and the support roll groups 32, 34, 36 arranged on the upper surface of the lower girder 18 included in FIG. 1 in a top view. FIG. 3A is a diagram showing a front side configuration of the roll support portion 42. FIG. 2B is a cross-sectional view taken along the line AA shown in FIG.

As shown in FIGS. 2 and 3 (a) and 3 (b), the roll support portion 42 pivotally supports both ends of the support roll group 32 arranged close to the bottom roll pair 30. The support roll group 32 is composed of a support roll (second support roll) 32A, a support roll (second support roll) 32B, and a support roll (first support roll) 32C. Further, the legs 42A and 42B of the roll support portion 42 are provided with first roll position adjusting mechanisms 71 and 72, respectively. Since the first roll position adjusting mechanisms 71 and 72 have the same configuration, only the first roll position adjusting mechanism 72 will be described.

The first roll position adjusting mechanism 72 moves the moving body 73 that raises and lowers the roll support portion 42 by changing the position in the front-rear direction with respect to the roll support portion 42, and the moving body 73 in the front-rear direction X with respect to the roll support portion 42. Includes a position change unit 74 to be moved. The moving body 73 has a substantially right-angled triangular appearance in a side view, and the leg portions 42B and the guide rail GL1 are movable in the front-rear direction X with respect to both the roll support portion 42 and the guide rail GL1. It is sandwiched between them.

More specifically, a guide groove 73A (see FIG. 3A) extending along the front-rear direction X is formed on the upper surface of the moving body 73, and the bottom surface of the guide groove 73A is upward from the front to the rear. It is gently sloping toward it. On the other hand, the lower end portion 42B-1 of the leg portion 42B in the roll support portion 42 is formed so as to be movably fitted into the above-mentioned guide groove 73A along the front-rear direction X. With these configurations, the roll support portion 42 can be raised and lowered by changing the position of the moving body 73 in the front-rear direction with respect to the roll support portion 42.

Further, the moving body 73 is provided with a dropout prevention protrusion 73B along the front-rear direction X on the inside of the bottom surface so as not to fall off from the guide rail GL1. This makes it possible to prevent the moving body 73 from falling off from the guide rail GL1.

The position change unit 74 includes an implant bolt 75 fixed to the rear end side of the leg portion 42B in the roll support portion 42 while being inserted into a through hole provided in the protruding portion 73C of the moving body 73. The implant bolt 75 is inserted into a through hole provided in the protruding portion 73C of the moving body 73, and the nuts 76A and 76B are screwed so as to sandwich the protruding portion 73C in between.

Both nuts 76A and 76B have a role of fixing the implant bolt 75 to the protrusion 73C without loosening by tightening each other in the direction of sandwiching the protrusion 73C. Then, when raising the roll support portion 42, the front nut 76A is moved forward in advance to separate it from the protruding portion 73C, and then the rear nut 76B is screwed in with a spanner or the like to move the moving body forward. The protrusion 73C in 73 is pressed. Then, the moving body 73 can be pushed forward relative to the roll support portion 42 by this pushing pressure to raise the roll support portion 42.

On the contrary, when lowering the moving body 73, the rear nut 76B is moved rearward in advance, and the front nut 76A is screwed in and moved rearward in a state of being separated from the protrusion 73C to move the moving body 73 rearward. The protrusion 73C is pressed. Then, the moving body 73 is pulled out relatively rearward with respect to the roll support portion 42 by this pressing force, and the roll support portion 42 can be lowered.

As shown in FIG. 3B, the roll support portion 42 includes shaft support portions 42-1, 42-2, 42-3 that pivotally support the support rolls 32A, 32B, and 32C on the upper portion of the leg portion 42B, respectively. Second roll position adjusting mechanisms 81 and 82 are provided on the shaft support portions 42-1 and 42-2, respectively. Here, since the configuration of the leg portion 42A on the opposite side of the roll support portion 42 is the same as the configuration of the leg portion 42B described above, the description thereof will be omitted. Further, since the configurations of the second roll position adjusting mechanisms 81 and 82 are substantially the same, only the second roll position adjusting mechanism 82 will be described below.

As shown in FIGS. 3B and 4A, the second roll position adjusting mechanism 82 includes a bearing 83 attached to the shaft end 32B-1 of the support roll 32B and a shaft end 32B of the support roll 32B. A retaining cap 84 for preventing the bearing 83 from falling off from -1 and a cylindrical housing (cylindrical body) 86 into which the bearing 83 is inserted are provided. In this housing 86, the rotation center P1 shown in FIGS. 4 (b-1) and FIG. 4 (b-2) is a rotation center when rotating with respect to the roll support portion 42, and the center position P2 forms a columnar space. It is the central position of the inner peripheral portion 86a including the inner peripheral portion 86a. As described above, the housing 86 is configured so that the position of the center position P2 is eccentric by a predetermined distance t with respect to the rotation center P1 when rotating.

Further, the shaft center position, which is the rotation center of the shaft end 32B-1 in the support roll 32B, is held in the housing 86 so as to coincide with the center position P2. Therefore, when the housing 86 is rotated, in other words, when the housing 86 is rotated with respect to the roll support portion 42, the shaft center position of the shaft end 32B-1 draws a circumferential trajectory having a predetermined distance t as a radius. Displace like. By utilizing this action, the support roll 32B can be brought closer to or separated from the bottom roll 30B.

Further, a position adjusting cap 87 having a regular octagonal outer shape is fixed to the end surface of the housing 86. A semi-circular fixing plate 88 is detachably fixed to the shaft support portion 42-2 of the roll support portion 42 along the outer circumference of the position adjusting cap 87. The fixing plate 88 has a semicircular arcuate appearance shape, and is provided with, for example, a saw blade-shaped fitting portion 88S that can be fitted to the outer shape of the position adjusting cap 87 on the inner peripheral side. Further, the fixing plate 88 is provided with four elongated holes 88A, 88B, 88C, 88D along the circumferential direction, and the bolts BT1 to BT4 inserted into the elongated holes 88A to 88D are provided on the roll support portion 42. Each of them is screwed into a screw hole formed in the shaft support portion 42-2 and fixed.

In the present embodiment, as shown in FIG. 4 (c-1), the support roll 32B is most separated from the bottom roll 30B when fixed on the front end side of each of the elongated holes 88A to 88D in the fixing plate 88. Then, as shown in FIG. 4 (c-2), the support roll 32B is configured to approach the bottom roll 30B so as to rotate the fixing plate 88 forward, and the fixing plates 88 are arranged in the elongated holes 88A to 88D. The support roll 32B is set to come into contact with the bottom roll 30B when fixed near the center of the.

Subsequently, a method of adjusting the positions of the support rolls 32A to 32C using the first and second roll position adjusting mechanisms 72 and 82 will be described with reference to FIGS. 5 and 6. Since the position adjustment procedure of the roll support portion 42 in the leg portion 42A and the position adjustment procedure in the leg portion 42B are substantially the same, the following description mainly describes the position adjustment procedure in the leg portion 42B and the leg portion 42A. The description of the above will be omitted as appropriate.

5 (a) to 5 (c) are diagrams illustrating a method of adjusting the position of the support roll 32B by the first roll position adjusting mechanism 72. As shown in FIG. 5A, roll support is performed by rotating the nuts 76A and 76B attached to the implant bolt 75 before the bottom roll pair 30 is pivotally supported by the leg portion 42B of the roll support portion 42. The moving body 73 is moved relatively backward with respect to the leg portion 42B of the portion 42.

As a result, when installing the bottom roll pair 30, the roll support portion 42 is lowered and installed with the support roll group 32 so that the support roll group 32 does not come into contact with the bottom roll pair 30 and interfere with the installation work. A gap of an appropriate size can be secured between the bottom rolls and the 30.

Then, as shown in FIG. 5B, after the bottom roll pair 30 is installed, the moving body 73 is relative to the roll support portion 42 by rotating the nuts 76A and 76B attached to the implant bolt 75. Move forward. As a result, the support roll 32C comes into contact with one of the rolls of the bottom roll pair 30 (in FIG. 5B, the case of contacting the bottom roll 30A is shown).

Then, when the moving body 73 is further moved forward relative to the roll support portion 42, it moves from the bottom roll 30A in contact with the roll support portion 42 by the reaction force acting on the support roll 32C as shown in FIG. 5C. The body 73 may be slightly pushed rearward along the guide rail GL1 together with the roll support portion 42, and the support roll 32C may also be brought into contact with the other roll (shown in FIG. 5 (c) in contact with the bottom roll 30B). can.

As a result, the support roll 32C can be brought into contact with both of the bottom roll pair 30. Then, the protrusions 73C of the moving body 73 are tightened and fixed by the nuts 76A and 76B so as to sandwich them. Further, the position adjusting operation of the first roll position adjusting mechanism 71 is performed in the same procedure as the above-mentioned first roll position adjusting mechanism 72. This completes the position adjustment work for the support roll 32C.

6 (a) and 6 (b) are diagrams illustrating a method of adjusting the position of the support roll 32B by the second roll position adjusting mechanism 82. Before the installation of the bottom roll pair 30, the second roll position adjusting mechanism 82 is the front end of each elongated hole 88A to 88D in the fixing plate 88 so that the support roll 32B is in the most lowered position as shown in FIG. 6A. The position on the side is fixed by each bolt BT1 to BT4. From this state, the bolts BT1 to BT4 are loosened and the plate 88 is rotated in the direction of the arrow C to raise the support roll 32B to a position where it comes into contact with the bottom roll 30B. Then, the fixing plate 88 is fixed to the roll support portion 42 with the bolts BT1 to BT4 (see FIG. 6B). The second roll position adjusting mechanism provided at the shaft end on the opposite side of the support roll 32B is also fixed after rotating the fixing plate in the same procedure. As a result, the support roll 32B can be contact-supported by the bottom roll 30B. Further, the position of the support roll 32A is adjusted by the same procedure as that of the support roll 32B described above, and the bottom roll 30A is contact-supported. As a result, the position adjusting work of the support roll group 32 is completed.

According to the first roll position adjusting mechanism 72 in the bending roll machine 10 of the present embodiment, the support roll 32C is pressed against one of the rolls constituting the bottom roll pair 30 by changing the position in the front-rear direction of the moving body 73. The reaction force causes the roll support portion 42 to be pushed out together with the support roll 32C toward the other roll constituting the bottom roll pair 30. Therefore, the support roll 32C can be brought into contact with both rolls constituting the bottom roll pair 30. Further, regarding the first roll position adjusting mechanism 71 provided at the shaft end on the opposite side of the support roll 32C, the support roll 32C can be brought into contact with both rolls constituting the bottom roll pair 30 by the same procedure. ..

As a result, both rolls constituting the bottom roll pair 30 can be contact-supported by a single support roll 32C without providing a drive motor or a gear mechanism. As a result, it is possible to reduce the deflection of the bottom roll pair 30 while suppressing an increase in manufacturing cost.

Further, according to the second roll position adjusting mechanism 82 in the bending roll machine 10 of the present embodiment, the support roll 32B is rotated to a position in contact with the bottom roll 30B by rotating the housing 86 with respect to the roll support portion 42. The support roll 32B can be fixed to the roll support portion 42 by using the fixing plate 88 so that the support roll 32B does not rotate with respect to the roll support portion 42 while being moved. Further, the support roll 32B can be rotated to a position in contact with the bottom roll 30B by operating the second position adjusting mechanism provided at the shaft end on the opposite side of the support roll 32B in the same procedure. can.

As a result, the bottom roll 30B can be contact-supported by the support roll 32B without providing a drive motor or a gear mechanism. As a result, the bending of the bottom roll 30B can be reduced while suppressing an increase in manufacturing cost.

In the present embodiment, both the first roll position adjusting mechanism 72 and the second roll position adjusting mechanism 82 are used to contact and support the support rolls 32B and 32C on the bottom roll pair 30, respectively. The invention is not limited to this. For example, like the support roll 32C, the support rolls 32A and 32B are pivotally supported by the roll support portion 42 without providing the second roll position adjustment mechanism, and the position of the roll support portion 42 is adjusted by the first roll position adjustment mechanism 72. The support rolls 32A to 32C may be brought into contact with the bottom roll pair 30 only by itself. In this case as well, the same effect as that of the above embodiment can be obtained. However, in this case, since there is only an adjustment allowance by the first roll position adjusting mechanism 72, it is necessary to install each of the support rolls 32A to 32C in advance so that they can come into contact with the bottom roll pair 30 within the adjustment allowance. , It takes time and effort to install. Therefore, it is more preferable to use the first roll position adjusting mechanism and the second roll position adjusting mechanism together as in the above embodiment.

In the present embodiment, an example in which the second roll position adjusting mechanism 82 is applied to the support roll 32B that contacts and supports the bottom roll 30B is given, but for example, it is applied to the support roll pair 22 that contacts and supports the top roll 20. You may. In this case, unlike the bottom roll pair 30, the top roll 20 is composed of a single roll, so that it is not necessary to use it in combination with the first roll position adjusting mechanism as in the above embodiment, and the support roll pair 22 is used. The second roll position adjusting mechanism may be applied to both of the constituent rolls. Further, the second roll position adjusting mechanism may be applied only to one of the rolls constituting the support roll pair 22, and the top roll 20 may be installed after being positioned in advance so as to contact-support the other roll. good.

The present invention can also be carried out in a mode in which various improvements, modifications, or modifications are made based on the knowledge of those skilled in the art without departing from the spirit of the present invention. Further, within the range in which the same action or effect is produced, any of the invention-specific matters may be replaced with another technique.

10 Bending roll machine 20 Top roll (1st processing roll)
30 Bottom roll pair (second processing roll pair)
30A, 30B bottom roll (second processing roll)
32, 34, 36 Support roll group 32A, 32B Support roll (second support roll)
32C support roll (first support roll)
42, 44, 46, 48A, 48B Roll support 71,72 First roll position adjustment mechanism 73 Moving body 73A Guide groove 73B Fall prevention protrusion 73C Protrusion 74 Position change unit (position change means)
75 Implant bolt 76A, 76B Nut 81, 82 Second roll position adjustment mechanism 83 Bearing 84 Retaining cap 86 Housing (cylindrical body)
87 Position adjustment cap 88 Fixed plate t Predetermined distance

Claims (2)

A first processing roll that is vertically movable and supported, a second processing roll pair that sandwiches and bends a plate material between the first processing rolls, and a first support roll that is arranged close to the second processing roll pair. A bending roll machine including a roll support portion provided with a first roll position adjusting mechanism for adjusting the position of the first support roll.
The first roll position adjusting mechanism is
The roll support portion and the guide portion of the roll support portion are located between the roll support portion and a guide portion on which the roll support portion is placed so as to be movable in a front-rear direction substantially parallel to the horizontal direction orthogonal to the first processed roll. A moving body having a function of raising and lowering the roll support portion by being sandwiched in a state of being movable in the front-rear direction with respect to both sides and changing the position of the roll support portion in the front-rear direction .
A position changing means having a function of changing the position of the moving body in the front-rear direction with respect to the roll support portion, and
Including
By changing the position of the moving body by the position changing means, the roll support portion is raised to bring the first support roll into contact with one roll of the second processing roll pair, and the first from the one roll. The reaction force acting on the 1 support roll pushes the roll support portion together with the moving body toward the other roll constituting the second processed roll pair, so that the first support roll also comes into contact with the other roll. Characterized by letting
Bending roll machine. The moving body is provided with a drop-off prevention structure for preventing the moving body from falling off from the guide portion.
The bending roll machine according to claim 1.

Images