JPH0252566B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a finishing shaping roll device used in the production of square steel pipes and lightweight sections.

In a series of forming roll equipment for lightweight steel sections such as square steel pipes, channel steel, and Z-shaped steel, the final stage finishing and shape straightening equipment requires two to four forming rolls each time the product type or size changes. Rolls must be replaced and reassembled, and it takes a lot of time to remove, install, and adjust the rolls, and during this time work is suspended, which is one of the major causes of reduced production efficiency.

To solve this problem, a so-called Turk's head roll has been proposed, but since this roll is a non-driving roll, it takes a long time to process the rear end of the product, so-called end treatment. In addition, since the forming speed of the product changes greatly when passing through the rear end, for example, in equipment where a measuring roll is brought into contact with the product surface and the cutting machine is controlled by the rotation speed, the cutting length cannot be adjusted. There are drawbacks such as problems such as unevenness and chipping of the blade.

The present invention aims to provide a fixed roll device that solves the above-mentioned problems, and includes: a first face plate that is incorporated into a roll stand and has a rectangular hole in the center through which the product passes; two horizontally movable face plates, an upper and a lower horizontally movable face plate, which are movable in parallel and horizontally on the first face plate and have a notch so as to surround the square hole; an upper and lower vertically movable face plate provided to be movable in the vertical direction; and a cantilevered left vertical roll rotatably fixed to the horizontally movable face plate parallel to the opposing left and right vertical sides of the square hole; , a cantilevered right vertical roll rotatably fixed to the lower vertically movable faceplate, and a drive rotatably fixed to the upper vertically movable faceplate parallel to the upper and lower horizontal sides facing each other of the square hole. It consists of a shaft-connected cantilevered upper horizontal roll and a drive shaft-connected cantilevered lower horizontal roll which is also rotatably fixed to the lower horizontally movable face plate, and each of the four horizontal rolls and the four vertical rolls: The end face of one roll can move relative to the left and right or up and down along the outer peripheral surface of the adjacent roll on the roll end face side, and the outer peripheral face of the roll can move relative up and down or left and right along the roll end face of the adjacent roll on the other side. The present invention relates to a universal type fixed roll device characterized by being arranged in a possible positional relationship.

Next, embodiments shown in the accompanying drawings will be described.
A rectangular passage hole 2 through which a product 3 of maximum size can pass is provided in the center of a first face plate 1 incorporated in a roll stand (not shown).

Upper and lower second face plates, that is, horizontally movable face plates 6, 7, are movable in the horizontal direction parallel to the first face plate while being guided by rails 4, 5 provided on the first face plate.
are attached, and cutouts 8 and 9 are provided in the horizontally movable face plate corresponding to the peripheral edge of the product passage hole 2 of the first face plate 1, respectively.

Horizontal movement The horizontal movement of the face plate is achieved by motors 13a, 1 via gears 12a, 12b connected to male screws 11a, 11b rotatably fixed to the first face plate 1 by bearings 10a, 10b, for example.
3b is rotated in the normal or reverse direction, the female screws 14a, 14b fixed to the horizontally movable face plates 6, 7 and screwed into the male screws 11a, 11b are moved in the left-right direction.

Rails 15 provided on horizontally movable face plates 6 and 7
Alternatively, upper and lower vertically movable face plates 17 and 18 are attached so that the face plates 17 and 18 can be moved in the vertical direction while being guided by the face plates 16 . The vertical movement of the vertically movable faceplates 17 and 18 is achieved by, for example, bearings 19 on the horizontally movable faceplates 6 or 7.
A, 19b rotatably fixed male screws 20a, 20b are connected to gears 21a,
By rotating the motors 22a, 22b in the normal or reverse direction via the motors 21b, the vertically movable face plates 17, 1
This is done by vertically moving the female screws 23a, 23b fixed to the screws 8 and screwed into the male screws 20a, 20b.

As can be seen from FIG. 3, a left vertical roll 24 is rotatably fixed to the upper horizontally movable face plate 6 by a bearing 25a parallel to the left vertical side of the product passage hole 2 of the first face plate. A lower horizontal roll 26 is rotatably fixed to the lower horizontally movable face plate 7 by a bearing 27a parallel to the lower side of the product passage hole 2, and the lower horizontal roll 26 is connected to a drive shaft 29a via a universal joint 28a. It is connected.

As can be seen from FIG. 4, an upper horizontal roll 30 is rotatably fixed to the upper vertically movable face plate 17 in parallel to the upper side of the product passage hole 2 by a bearing 27b.
The upper horizontal roll 30 has a universal joint 28
It is connected to the drive shaft 29b via b. Further, a right vertical roll 31 is rotatably fixed to the lower vertically movable face plate 18 in parallel to the right vertical side of the product passage hole 2 by a bearing 25b.

As shown in the figure, each roll is supported in a cantilevered manner by a bearing, and since bearings alone are not strong enough to support the forming load received during forming, they are attached to their respective face plates for reinforcement purposes. It is designed to be backed up from behind by a backup roll 33 built into a mounting block 32.

Further, when the horizontally movable face plate is moved in the horizontal direction, the drive shafts 29a and 29b of the horizontal rolls must expand and contract, and for this purpose, a spline shaft may be provided in the middle of the drive shafts.

Next, we will discuss how to use typical product shapes. In the following description, it is assumed that the pass line constant, that is, the height of the lower horizontal roll is always constant.

(B) Figure 5a shows the arrangement of each roll in the case of a square cross section, but when increasing the cross-sectional area of the product as shown in Figure b, (1) the upper horizontal roll 30 and the lower horizontal roll 26 are The upper vertically movable face plate 17 and the upper horizontal roll 30 are moved upward until the gap reaches a predetermined product height.

(2) Next, move the lower horizontally movable face plate 7, and therefore the lower horizontal roll 26 and the right vertical roll 31, to the right until the gap between the left and right vertical rolls 24, 31 becomes a predetermined product width.

(3) Next, move the lower vertically movable face plate 18, and therefore the right vertical roll, upward until its end reaches the upper horizontal roll surface to obtain the arrangement shown in Figure b.

(b) When changing from the square cross section in Figure 5 a to the vertically elongated rectangular cross section in Figure 5 c, (1) move the upper vertically movable face plate 17 until the gap between the upper and lower horizontal rolls 30 and 26 reaches a predetermined product height; Therefore, the upper horizontal roll 30 is moved upward.

(2) Move the lower vertically movable face plate 18 upward until the right vertical roll 31 reaches the roll surface of the upper horizontal roll 30.

(3) Upper horizontal moving face plate 6, therefore upper horizontal roll 3
0 and the left vertical roll 24 are moved to the left until the left vertical roll surface comes to half the product width from the vertical center line CL.

Note that in the adjustment operation explanations in (a) and (b) above, only one of the upper horizontally movable face plate 6 or the lower horizontally movable face plate 7 is moved to the right or left, but in an actual molding machine, the upper It is preferable to move both the horizontally movable face plate 6 and the lower horizontally movable face plate 7 to the right or left by half of the required movement amount. This allows the gap between the left and right vertical rolls to be adjusted without moving the vertical center line (roll center) CL.

In this way, a caliber with a desired cross-sectional shape can be formed with a constant pass line (PL). It will be easily understood that in the case of a horizontally long rectangular cross section, the movement can be done in the opposite direction to the above.

Further, the same procedure as above may be applied to the case of the regular shape of the lip channel steel shown in Fig. d.

(c) When used for shaping the Z-beam shown in Figure 5e, (1) The upper vertically movable face plate, and therefore the upper horizontal roll 30, until the gap between the upper and lower horizontal rolls 30 and 26 reaches the product height. move upward.

(2) Move the lower vertically movable face plate, and therefore the right vertical roll 31, upward until the flange thickness remains between the right vertical roll 31 and the upper horizontal roll 30.

(3) Move the upper horizontally movable face plate 6 to the right until the roll surface of the left vertical roll 24 comes to half the web thickness from the vertical center line CL.

(4) Move the lower horizontally moving face plate 7 to the left until the roll surface of the right vertical roll 31 comes to a position half the thickness of the web from the vertical center line CL.

The above description has been made in terms of moving the individual rolls in sequence, but since they can also be moved simultaneously, the size of the rolls can be changed in a short time in actual work.

Also, if you want to change the bottom pass line, the first plate can be moved up and down. Alternatively, instead of directly supporting the lower horizontal roll 26 on the lower horizontally movable face plate 7, the lower horizontally movable face plate 7
It is also possible to further provide a vertically movable face plate similar to the lower vertically movable face plate 18 above, and to support the lower horizontal roll so as to move it up and down.

Since the device of the present invention has the above-described structure, it is easy to rearrange the rolls according to the product shape and size.A pulse counter is attached to the movement motor of each face plate, and the roll movement can be adjusted for each product size. If the sequence is stored in advance in a control device (not shown), it becomes possible to simultaneously move the four face plates and set them in a predetermined position when changing the size, and roll rearrangement can be performed automatically in a short time. can.

Furthermore, if the first plate is structured to be rotatable in the vertical direction and within the plane about the axis, it will be possible to correct warpage, bending, and twisting of the product, which will have extremely great practical effects.

[Brief explanation of the drawing]

Fig. 1 is an overall assembled view of an embodiment of the present invention, Fig. 2 is a sectional view of Fig. 1, Fig. 3 is a front view of main parts showing the vertically horizontally movable face plate and the arrangement of rolls thereon, and Fig. 4. 5 is a front view of main parts showing the vertically movable face plate on the horizontally movable face plate and the roll arrangement thereon, and FIG. 5 is an explanatory diagram showing the procedure for rearranging the rolls. 1...First face plate, 2...Product passage hole, 4, 5
...Guide rail, 6...Upper horizontally movable face plate, 7...
Lower horizontally movable face plate, 8, 9...notch, 10a, 1
0b...Bearing, 11a, 11b...Horizontally moving face plate movement male screw, 13a, 13b...Motor, 14
a, 14b... Female thread, 15, 16... Guide rail, 17... Upper vertically movable face plate, 18... Lower vertically movable face plate, 19a, 19b... Bearing, 20a, 20
b...Vertical movement face plate movement male screw, 22a, 22
b...Motor, 23a, 23b...Female thread, 24
... Left vertical roll, 25 ... Bearing, 26 ... Lower horizontal roll, 27a, 27b ... Bearing, 28a, 28
b...Universal joint, 29a, 29b
... Drive shaft, 30 ... Upper horizontal roll, 31 ... Right vertical roll, 32 ... Mounting block, 33 ... Backup roll.

Claims (1)

[Scope of Claims] 1. A first face plate that is incorporated into the roll stand and has a rectangular hole in the center through which the product passes; and a first face plate that is movable in parallel and horizontally on the first face plate. two horizontally movable face plates, upper and lower, each having a notch surrounding the square hole; and an upper and lower vertically movable face plate movable in parallel and vertically on the upper and lower horizontally movable face plates; a cantilevered left vertical roll rotatably fixed to the upper horizontally movable face plate parallel to the opposing left and right vertical sides of the square hole; and a cantilever also rotatably fixed to the lower vertically movable face plate. , a cantilevered upper horizontal roll connected to a drive shaft rotatably fixed to the upper vertically movable face plate parallel to the opposite upper and lower horizontal sides of the rectangular hole, and also a lower vertically movable roll. It consists of a cantilever lower horizontal roll rotatably fixed to a face plate and connected to a drive shaft, and each of the four horizontal rolls and vertical rolls has one roll end face that is adjacent to the outer peripheral surface of the adjacent roll on the roll end face side. A fixed shape characterized by being relatively movable horizontally or vertically along the roll, and arranged in a positional relationship in which the outer circumferential surface of the roll can be relatively movable vertically or horizontally along the roll end surface of the adjacent roll on the other side. Roll device.