JPS638854B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a forming roll that is made up of left and right split rolls and that continuously forms a metal strip into lightweight section steel. Pertains to fixation devices.

The method of manufacturing various so-called lightweight sections by forming metal strips or strips cut to the required width has advantages such as high productivity, energy saving through cold working, and high dimensional accuracy of the product. ,
The problem is that it takes a lot of time and effort to rearrange the rolls when changing the molded product.

As a forming roll that solves this problem, the applicant proposes that a roll shift nut is screwed onto the roll shaft and has a female thread that engages with a male thread cut on the outer periphery of the roll shaft, and a guide provided on the outside of the roll shaft. The nut is rotatably engaged with a groove on the side surface of the split roll fitted on the roll shaft so as to move parallel to the axis along the groove, and the nut is rotated along the male thread of the roll shaft. We have previously proposed a forming roll that can be used to form steel sections of the same type with various dimensions by moving the split roll laterally parallel to the roll axis to adjust the roll width (Japanese Patent Application No. 1983-
No. 102447, inventive forming rolls).

The present invention relates to an improvement thereof, and relates to a device that simplifies the adjustment of the width between the left and right split rolls and prevents the roll width from changing due to the rotation of the nut and the lateral movement of the split rolls during forming operations.

Next, embodiments shown in the accompanying drawings will be described.
To simplify the explanation, we will explain one split roll of the upper roll, but the other split roll is symmetrical, and the split roll and nut of the bottom roll are also in opposite positions, but the mechanism is similar. are similar, so the explanation will be omitted.

The illustrated roll shaft 1 consists of an inner shaft 2 and an outer shaft 3 fitted in a fixed position on the outside thereof. Both are interconnected by a key 4, and the driving torque of the inner shaft 2 is transmitted to the outer shaft 3. It is made to be transmitted. In addition to this embodiment, the inner shaft 2 and the outer shaft 3 are
There is no difference in functionality even if the two are manufactured in one piece.

Male thread 5 provided on the outer periphery of the outer shaft 3
A roll shift nut 6 is screwed into the outer shaft 3 and has a female thread on the inside. A guide groove 7 is cut on the outer surface of the outer shaft 3 in parallel to the axis.
A protrusion 9 provided on the inner periphery of the split roll 8 fitted in the split roll 8 engages with the guide groove 7, and the split roll 8 is guided by the guide groove 7 and can move parallel to the roll axis, and a roll shaft, that is, an inner shaft 2,
They are configured to rotate together as the outer shaft 3 rotates.

A circumferential groove 11 is provided on one side surface 10 of the split roll 8, and the protrusion 6a at one end of the nut 6 is fitted into the groove 11 and screwed to the side surface of the split roll 8. The nut 6 and the split roll 8 are held in place by the cover plate 12 so as not to slip out, and the nut 6 and the split roll 8 are rotatably engaged with each other.

A rotating ring 13 is fitted onto a nut 6 on the outside of the cover plate 12, and is connected and fixed to each other by a key 14. A handle 15 is removably attached to the outer periphery of the rotating ring 13.

A ratchet 16 is cut on the outer periphery of the nut protrusion 6a fitted into the groove 11 of the split roll 8, and a ratchet 16 is cut in the circumferential direction following one to several notches 17 provided on the inner peripheral surface of the groove 11. A long leaf spring recess 18 is provided on the side surface of the split roll. The recess 18 may be one continuous groove in the circumferential direction. recess 1
8 is inserted with a leaf spring 19 bent into the shape of a central groove, and by the elasticity of the leg portion 19b of the leaf spring in the groove 11, the bent portion 19a of the central portion is elastically moved from the notch 17 toward the ratchet 16 side of the nut. It is designed to protrude and mesh with the teeth of the ratchet.

Since the structure is as described above, when holding the handle 15 of the rotating ring 13, the rotating ring 1 can be rotated against the elasticity of the leaf spring 19 that is engaged with the ratchet 16.
When the nut 6 is rotated, the bent portion 19a of the leaf spring engages each thread of the ratchet 16, and the nut 6 is rotated.
rotates around the stationary outer shaft 3 of the roll shaft, and since the nut 6 is screwed into the screw 5 of the outer shaft, it moves in the axial direction while rotating around the roll shaft. Projection 6 of nut 6
Since a is rotatably engaged with the split roll 8, when the nut 6 moves left and right in the axial direction, the split roll 8 is also guided by the guide groove 7 of the outer shaft 3 and moves left and right in the axial direction. become.

Similarly to the above, the other divided roll of the upper roll is moved closer to the center or opened to the left and right to adjust the interval between the left and right divided rolls to a desired interval. Since the leaf spring 19 and the ratchet 16 are engaged with the nut 6 and the split roll 8, when the split roll 8 rotates due to the rotation of the roll shaft 1, the nut 6 also rotates together with the roll shaft and therefore the outer shaft 3. The nut 6 remains at a fixed position without moving left and right on the roll axis, and the width of the left and right divided rolls does not change. The same applies to the lower roll.

If the stopper rods 21 are removably attached across the pillars 20 on both sides of the roll stand, the rotation of the rotary ring 13 and therefore the rotation of the nut 6 can be performed by rotating the roll shaft rather than manually. That is, as shown in FIG. 6, when the roll shaft 1, and thus the inner shaft and the outer shaft 3 are rotated clockwise, the nut 6 and therefore the rotating ring 13 are also rotated, and the handle 15 hits the stopper rod 21 from above. When the rotation stops and the outer shaft 3 continues to rotate further, the nut 6 is moved to the left (or right) in the axial direction by the screw 5 of the outer shaft 3 with which it is screwed. To move in the opposite direction, use outer shaft 3 in the opposite direction as above.
When the nut 6 is rotated counterclockwise, the nut 6 and therefore the rotating ring 13 also rotate together, and the handle 15 hits the stopper rod 21 from below and the rotating ring 13 and therefore the nut 6 stop rotating, so that the outer shaft 3 is further rotated. As the rotation continues, the nut 6 moves to the right (or left) in the axial direction, and the nut 6, and therefore the split roll 8, can be moved mechanically without manual operation.

After the roll width is adjusted in this way, if the stopper rod 21 or the handle 15 or both are removed, the nut will not move further, and the work will not be hindered by the stopper rod.

As explained above, according to the device according to the present invention, the split rolls of the forming roll and the roll shift nut are engaged with each other by the leaf spring and the ratchet, so when moving the split rolls manually, the elasticity of the leaf spring is used. The meshing with the ratchet can be carried out by moving one thread at a time, and once the position of the split roll is determined, the split roll and nut work together to drive the outer shaft and therefore the roll axis. Since it rotates along with the roll axis due to force, it does not move laterally during operation.

It is also possible to move the split roll laterally by manually turning the rotation ring to rotate the nut, or to move the split roll laterally by rotating the roll shaft, and therefore the outer shaft, to rotate the split roll and therefore the nut, and to move the split roll horizontally to the stopper prepared in advance. When the rotation of the rotating ring is stopped, the nut also stops rotating, and the screw of the outer shaft allows the split roll to be moved laterally, allowing the roll width to be adjusted by mechanically moving the split roll in the direction of the roll axis. can.

[Brief explanation of the drawing]

Fig. 1 is a partially exploded front view showing an embodiment of the present invention for one stand of forming rolls, Fig. 2 is a sectional view showing an embodiment of the invention for one split roll, and Fig. 3 is a sectional view of a stand of forming rolls. Fig. 4 is a cross-sectional view of the main parts showing the relationship between the roll shift nut and the split rolls, Fig. 5 is a side view of the main parts, and Fig. 6 is a side view of the split rolls. FIG. 3 is a side view showing the main parts when shifting is performed mechanically. 1...Roll shaft, 2...Inner shaft, 3...
... Outer shaft, 4 ... Key, 5 ... Male thread on the outer circumferential surface of the outer shaft, 6 ... Roll shift nut, 7 ... Guide groove, 8 ... Split roll, 9 ...
Projection, 10... Split roll side surface, 11... Groove, 1
2... Lid plate, 13... Rotating ring, 14... Key, 15... Handle, 16... Ratchet, 17...
... Notch, 18 ... Recess for leaf spring, 19 ... Leaf spring, 20 ... Roll stand column, 21 ... Stopper bar.

Claims (1)

[Scope of Claims] 1. The left and right split rolls of the forming roll are fitted onto the roll shaft so as to be movable parallel to the shaft center along the guide grooves of the male-threaded roll shaft, and are rotatable relative to the split rolls. In a forming roll in which the width between the divided rolls is adjusted by moving the divided rolls by rotating an engaged roll shift nut, a leaf spring incorporated in a recess provided in a side surface of the divided roll; and a ratchet on the outer periphery of a nut that elastically engages with each other.