JPS61206521A - Take-up equipment of strip - Google Patents

Abstract

PURPOSE:To improve the durability of a device and to prevent a product from buckling by arranging an expanding and contracting body of elastic material in the inside of a group of segments to form a pressurized-oil chamber and expanding and contracting the segment-group through the oil. CONSTITUTION:An expanding and contracting body 3 consisting of an elastic expanding and contracting material, such as rubber, is disposed in the inside of a group 1 of segments which form the outer circumferential part of a mandrel. A pressurized-oil chamber 5 is formed by the segment group 1, a revolving shaft 2 and the body 3, etc. A pressurized-oil passage 4 which extends to the central part along the axial center line and openes at the large-diam. part 2a, is provided to the shaft 2. In this mechanism, when the oil is supplied to the chamber 5 through the passage 4, the body 3 bulges in the radial direction to radially expand the group 1. In this state, a strip is taken up, and the group 1 is radially contracted when the oil is extracted. In this way, the durability of the device is improved, and the buckling of product is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a winding device for a strip such as a copper strip, and more particularly to a winding device in which a winding mandrel is devised.

[Prior Art] This type of winding device installed at the final stage of a rolling facility has severe conditions such as high impact force and being used in a high-temperature atmosphere. Therefore, various considerations have been made to withstand such conditions.

In this winding device, the winding mandrel has divided segments on its outer periphery and is expanded and contracted by a wedge mechanism or a link mechanism in order to extract the wound coil.

However, as long as the above mechanism is used, the so-called hip bending phenomenon cannot be avoided. That is, according to the above mechanism, each segment group exhibits the same expansion/contraction length. Therefore, as shown in FIG. Between the tip Mt of the M and the second or subsequent vernal equinox (up to about 10 volumes), there is a broken part that is almost the thickness of the wall, and this remains as a reel mark, resulting in a decline in quality. S is a segment.

As a means to prevent this waist buckling, conventional methods have been used since
In Japanese Patent Application Laid-open No. 148412, an elastic body is provided on the outer surface of the wedge, in Japanese Patent Application Laid-open No. 54-118365, the method of using a sleeve is devised, and in Japanese Patent Application Laid-Open No. 50-53258, the connection between segments is improved. , Special Public Service 1977-
No. 18406 discloses a method for elastically holding segments on a wedge surface in a mandrel of a wedge mechanism.
Japanese Patent Publication No. 55-18407 proposes a means for elastically holding segments in a link [JI Nomandrel].

All of these are based on expanding and contracting segments by means of wedge or link mechanisms.

[Problems to be Solved by the Invention] However, although some of the above conventional methods are effective to some extent, they are not only unable to adequately deal with buckling, but are also structurally complex and increase the manufacturing cost of the mandrel. . Also,
As far as the above mechanism is concerned, there are many sliding parts, and the damage is severe and the durability is poor.

Therefore, the main object of the present invention is to provide a strip winding device that has excellent durability, is structurally simple, is easy to maintain, and can reliably prevent bending by completely different expanding and contracting means. There is a particular thing.

[Means for solving problems] In order to solve the above problems, the present invention provides an apparatus.

A segment that is divided into a large number in the circumferential direction and placed on the outer periphery, a rotating shaft placed in the center, and a pressure oil chamber that is placed inside the group of segments and constitutes a pressure oil chamber by itself or together with other members. an expandable body made of a stretchable elastic material that expands and contracts in the direction, and configured such that pressure oil for expansion and contraction can freely enter and exit the pressure oil chamber from the outside, and the segment group and the expandable body co-rotate with the rotating shaft. It was designed to do so.

[Function] In the present invention, when expanding and contracting the segment group, an expandable body made of a stretchable elastic material is arranged inside the segment group, and the expansion and contraction is performed by allowing pressure oil to enter and exit the expanding body, which is completely different from the conventional example. It's like letting them do it. Therefore, when pressurized oil is introduced into the expansion and contraction body, the expansion and contraction body is made of a stretchable elastic material, so the expansion and contraction body expands in the radial direction, and the expansion pressure is applied to each segment group, causing the diameter to expand. Ru. Conversely, when the pressure oil is removed, the expandable body contracts due to its own restoring force and its diameter is reduced.

On the other hand, when a uniform seaming force is applied to the expandable body through the segment group, the segment group will be of the same length from the center at a radial position where the internal pressure on the expandable body and the pressing force acting on the expandable body are balanced. in position. However, as can be inferred from FIG. 6, during winding, the strip M
The seaming force is strongly concentrated at the tip ML. Therefore, in the mandrel according to the present invention, the strip M
When the winding force is concentrated on the tip ML of the expandable body, which is made of a stretchable elastic material, the expandable body itself deforms as shown in FIG. 5, thereby preventing ff bending.

In addition, the device of the present invention is structurally simple because the expansion/contraction body and the pressurized oil inlet/output means are basically the constituent elements, and the degree of expansion/contraction can be easily controlled by controlling the pressure of the pressurized oil. In addition, unlike conventional mechanisms, it does not expand or contract without mechanical means, and therefore there are basically no sliding parts, so it has excellent durability in terms of impact resistance and the like.

[Specific Examples of the Invention] The present invention will be further explained in detail below with reference to specific examples shown in the drawings.

Reference numeral 1 denotes a segment constituting the outer periphery of the mandrel, which is divided into many segments in one circumferential direction and extends in the axial direction of the mandrel. Reference numeral 2 denotes a rotating shaft disposed at the center, which is held, for example, in a cantilevered structure so as to be rotatable around the axis (holding means not shown). An expandable member 3 made of an elastically extensible material such as rubber is provided inside each segment group 1, 1·φ·. The expansion/contraction body 3 is continuous in the circumferential direction, and as shown in FIG. ing. Further, the end portion in the longitudinal direction of the shaft is rolled inward with the non-fixed pouch portion 3B1, 382 at a position outside the large diameter portion 2a of the rotating shaft 2, and roughly forms the edge portion 3C.

3C is fixed to the stepped shoulder portions 2b, 2b of the large diameter portion 2a with adhesive or the like. In this way, the expansion/contraction body 3 co-rotates with the rotating shaft 2, and the segment 1 group also co-rotates, the structure of which will be described later.

On the other hand, the rotary shaft 2 is formed with a pressure oil passage 4 that extends along its axial center line to a central portion, branches from there into a plurality of parts, and opens at the large diameter portion 2a.

Although not shown, the pressure oil passage 4 is connected to an external pressure oil source, and is provided with a pressure control valve, a relief valve, a pressure gauge, and a pressure control device along the way.

Thus, the pressure oil passage 4 connects the pressure oil source, the expansion/contraction body 3, and the rotating shaft 2.
It communicates with a pressure oil chamber 5 formed by a large diameter portion 2a.

Further, a disk-shaped end plate 626 is fixed to the rotating shaft 2 at a position outside the longitudinal end of the segment) l, and the central axis of the mandrel is fixed to this end plate 6 as shown in FIG. Engagement holes 6a are formed at intervals along a centered circle. Furthermore, at both ends of each segment) 1 in the longitudinal direction,
An L-shaped engagement piece 7A facing outward is located at one position in the first group of segments, and a simple flat plate-shaped fixing plate 7B is fixed by a port 8 at the other position. Piece 7
A is engaged with the engagement hole 6a with a clearance in the radial direction. Therefore, the segment 1 group co-rotates with the rotation axis 2.

In the winding device configured as described above, when pressure oil is supplied to the pressure oil chamber 5 through the pressure oil passage 4 from a state where pressure oil is not supplied, the expansion/contraction body 3 expands in the radial direction according to the pressure. Winding is performed in a state in which the diameter of the first group of segments is expanded. Conversely, when the pressure oil is removed, the segment 1 is reduced in diameter and the mandrel can be removed from the coil.

The oil pressure depends on the strip thickness, etc., but if the strip thickness is 1 to 2
The pressure range is 3 to 100 kg/crn' for 5IIm.

Since the longitudinal expansion of the expansion/contraction body 3 is regulated by the engagement piece 7A and the fixing plate 7B, the applied hydraulic pressure changes into an expansion force of the expansion/contraction body 3 in the radial direction. Also, segment) 1
When expanding and contracting in the radial direction, since the engaging piece 7A engages with the engaging hole 6a, it does not shift in the circumferential direction, and the expansion/contraction limit is regulated by the radial end surface of the engaging hole 6a, and eventually The engagement hole 6a of the end plate 6 and the engagement piece 7A function as a guide and a stopper for the first group of segments.

By the way, if for some reason the first group of segments shifts slightly in the longitudinal direction as shown in FIG. 4, the pouch portions 3B1 and 3B2 may become deformed. However, since the expansion/contraction body 3 has elasticity, l hz −ht
The lx hydraulic pressure acts to show restoring force and always protect the center.

On the other hand, according to the device of the present invention, when the winding force due to the tension of the strip after 2 @ minutes acts intensively on the tip ML of the strip M during winding, the expanding and contracting body is caused by the pressing force from the outside toward the center. 3 is deformed like part A, and becomes smooth after 2 turns. This prevents buckling.

By the way, in the above example, the pressure oil chamber 5 is connected to the expansion/contraction body 3 and the rotating shaft 2.
However, it is sufficient that the expansion/contraction body 3 is constituted by a concentric annular cylindrical body, and a pressure oil passage is communicated with a part of the body.
Further, the rotating shaft 2 does not need to be a hydraulic reaction force; other members that co-rotate with the rotating shaft 2 may be attached to the rotating shaft, and the other members may be used as the reaction force.

When forming an expandable body, it can be made of multiple layers of rubber, a wire mesh fabric sandwiched between rubber layers on the top and bottom, a rubber layer, a cloth layer, a rubber layer, a wire mesh layer from top to bottom, or each of the above embodiments. The material may be selected by considering the strength, etc., such as one in which piano wire is mixed into the rubber layer.

[Effects of the Invention] As described above, according to the present invention, based on an idea completely different from the conventional mechanical expansion/contraction mechanism, the segment group is Because it is designed to expand and contract, there are almost no mechanical elements such as sliding parts, so it is highly durable, has a simple structure, is easy to maintain, and has the advantage of being able to reliably prevent buckling. It will be done.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the mandrel portion of the device of the present invention, Fig. 2 is a view taken along the line II-II, Fig. 3 is an enlarged sectional view of the main part, and Fig. 4 is correction of axial misalignment of segments. An explanatory diagram of the principle, FIG. 5 is a cross-sectional view of a main part showing a mode of preventing hip bending by the device of the present invention, and FIG. 6 is a cross-sectional view of the bending condition. 1 , , Segment 2 , , Rotating axis 3
, , Expansion/contraction body 4 , , Pressure oil passage 512 .
Pressure oil chamber patent applicant Sumitomo Metal Industries, Ltd. Figure 4

Claims (1)

[Claims] (1) A segment that is divided into many parts in the circumferential direction and placed on the outer periphery, a rotating shaft placed in the center, and a segment that is placed inside the group of segments and that forms a pressure oil chamber by itself or together with other members. and an expandable body made of a stretchable elastic material that expands and contracts in the radial direction, so that pressure oil for expansion and contraction can freely enter and exit the pressure oil chamber from the outside, and the segment group and the expandable body are connected to the rotating shaft. A strip winding device characterized in that it is configured to co-rotate with a strip winding device.