JPH043687Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a pipe forming roll device in an electric resistance welded pipe manufacturing facility.

(Prior art) Conventional forming rolls for forming both edges of a plate are either a forming roll in which the roll and roll shaft are integrated as shown in Fig. 4, or a forming roll in which the roll spacing is changed to the roll axis as shown in Fig. 5. A split roll type forming roll with a spacer was used.

However, even if you use either of the above forming rolls, if you want to change the width or thickness of the forming plate material, you will need to change the spacing between the forming rolls, and the forming roll stand will be required. It was necessary to take out the forming roll and replace it with a forming roll with a different roll spacing.

In the case of integral forming rolls, it was necessary to prepare forming rolls for each roll interval.

Furthermore, in the case of split-type forming rolls, spacers are provided for each roll interval to change the roll interval, and replacing the spacers requires a large amount of time. Furthermore, depending on operating conditions, etc., fine adjustment of the spacer was also necessary.

"Plasticity and Processing" VOL23 as a conventional known means
As disclosed in No. 259 (1982-8), (a) Prepare a large number of rolls that match the pipe diameter and plate thickness.

(b) The material is advanced without the edges being formed sufficiently, and the fin pass roll is responsible for forming the edges.

(c) The forming rolls are taken off-line and the spacers inserted between the rolls are adjusted.

(Problems to be solved by the invention) Conventionally, it is necessary to prepare a large number of replacement forming rolls for each size, which increases the production cost of the forming rolls and increases the cost. Line stoppage time becomes longer due to roll replacement and adjustment each time the molding material plate width and plate thickness are changed. Further, when roll replacement is omitted, there are problems such as forming defects at the edges of the material.

(Means for Solving the Problems) The present invention attempts to advantageously solve the above problems, and its gist is to form a set of split molding using two forming rolls and one roll shaft. The two forming rolls are fitted onto the roll shaft so as to be movable in the sheet width direction, and a bearing box is provided to rotatably grip the outside of the end of the forming roll, and the bearing box is fitted in the sheet width direction. This forming roll device is characterized in that a feed screw shaft for moving in the direction is screwed into a bearing box, and the feed screw shaft is provided parallel to the roll axis.

(Function) Since the present invention has the above-described configuration, when both edges of the plate material are being formed, the two forming rolls and one roll shaft rotate simultaneously. and,
The bearing box installed on the outside of the forming roll end rotatably grips the forming roll, so even if the forming roll rotates, it will not rotate, and the force acting on the plate material to move the forming roll will move in the width direction of the forming roll. If an attempt is made to move, the movement is blocked by the bearing box and the feed screw shaft that moves the bearing box.

In addition, when adjusting the spacing between two forming rolls by changing the width of the plate material, by rotating the feed screw shaft and moving the bearing box that grips the forming roll, the forming roll moves along the roll axis and the roll spacing is adjusted. can be adjusted.

In addition, in order to adjust the distance between the two forming rolls by moving the two forming rolls closer together or separating them, the left and right screw directions of the feed screw are set in opposite directions, as shown in the feed screw shaft 2 in Fig. 2A. ing.

Moreover, one or two rolls may be used for one set of split molding rolls. This is appropriately selected depending on design conditions such as the thrust force in the axial direction of the roll acting on the forming roll.

As described above, the roll spacing can be adjusted in the online roll stand, so even if the roll spacing changes due to changes in sheet width, etc., it is no longer necessary to remove and replace the forming rolls from the roll stand each time.

(Example) In the example device shown in FIGS. 1 to 3, 1 is a roll shaft, 2 is a feed screw shaft, and 3 is a roll shaft 1 and 2.
A bearing box 3 that supports both sides of a book feed screw shaft 2 is disposed on a forming stand 11. 6 is a gear, 7 is a pinion, 8 is a motor, 4 is a traveling nut screwed onto the feed screw shaft, 10 is a forming roll, and the forming roll 10 is movably fitted to the roll shaft 1. Further, the forming roll 10 is connected to a feed screw shaft 2 via a roll bearing box 5 and a traveling nut 4, and is movable in the horizontal direction by the feed screw shaft 2 and the traveling nut 4.

The roll bearing 5 is provided at the end of the forming roll 10 via a rolling bearing 12, and grips the forming roll so that the forming roll can rotate and not move in the horizontal direction. Furthermore, a traveling nut for screwing onto the feed screw shaft is incorporated on both sides of the bearing box of the roll.

In the present invention, one roll shaft 1 and two feed screw shafts 2 are supported by a bearing box 3, and the two feed screw shafts 2 are driven by the rotational force of a motor 8 via a gear 6.

The feed screw shaft 2 of this example has a traveling nut 4 screwed together and is installed parallel to each other on the inlet and outlet sides of the roll shaft 1. Since the ends of the feed screw shaft 2 are connected by a gear 6, a pinion 7 The feed screw shaft 2 is rotated by being driven by a motor 8.

FIG. 2B is a front view of the forming stand upper and lower forming roll assembly, showing the case where the forming material is wide. In this case, the motor 8 is driven and the feed screw shaft 2 is
is rotated to move the traveling nut 4, and the set interval between the two forming rolls 10 is widened to a position that takes into consideration the left-right direction with respect to the thickness of the forming material. At this time, the gap between the rolls in the vertical direction related to the thickness of the molding material with respect to the lower forming roll is the upper forming roll 10.
By controlling the movement in and out of the roll elevating screw 9 attached to the bearing box, the proper spacing is ensured. FIG. 3C shows a case where the molding material is narrow, and the distance between the two rolls can be narrowed by reversing the motor 8 and moving the traveling nut 4.

(Effects of the invention) By preparing the above-described device, it is no longer necessary to replace the forming rolls that were required every time the sheet width is changed, and the cost and roll replacement work are greatly improved. Moldability can also be significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a front view of a forming roll device according to an embodiment of the present invention, Fig. 2A is a horizontal cross-sectional view showing a case where the setting interval of the forming rolls of the present invention is widened, Fig. 2B is a front view of the forming rolls, and Fig. 2B is a front view of the forming roll device of the present invention. 3A is a horizontal sectional view showing a case where the set interval of the forming rolls is narrowed, FIG. 3B is a view taken along line AA of the bearing box of FIG. 3A, and FIG. 3C is a front view of the forming rolls. FIGS. 4 and 5 are explanatory views of conventional forming rolls. 1... Roll shaft, 2... Feed screw shaft, 3... Roll shaft bearing box, 4... Traveling nut, 5
... Roll bearing box, 6 ... Gear, 7 ... Pinion, 8 ... Motor, 9 ... Roll lifting screw, 10 ... Forming roll, 11 ... Stand, 1
2... Rolling bearing, 13... Separate forming roll assembly, 14... Molding material.

Claims (1)

[Scope of utility model registration request] Two forming rolls and one roll shaft constitute a set of split forming rolls, and the two forming rolls are fitted onto the roll shaft so as to be movable in the width direction of the sheet, and the ends of the forming roll are A bearing box that rotatably grips the outside of the bearing box, a feed screw shaft for moving the bearing box in the width direction of the plate is screwed into the bearing box, and the feed screw shaft is provided parallel to the roll axis. A forming roll device featuring: