JP2779077B2 - Winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device,
In particular, the present invention relates to a winding device that prevents a reel mark from being generated on a coil such as a steel plate when the coil is wound, thereby improving the coil yield.

[0002]

2. Description of the Related Art Conventionally, for example, in a line for processing each step of steel sheet production, a steel sheet is usually conveyed in a coil state between each step. For this reason, generally, on the input side of each process,
A rewinding device for rewinding the coil is provided, and a winding device for winding the coil is provided on the output side. That is, the coil is rewound by the rewinding device on the entry side of the process, processed into a bare steel plate and processed, and then re-coiled by the winding device on the exit side to go to the next step. Sent.

FIG. 7 is a sectional view of the winding device in the longitudinal direction, and FIG. 8 is an enlarged sectional view of a portion DD of FIG. The winding device shown in FIG. 7 and FIG. 8 forms a cylindrical winding core 26 by combining segments 1 equally divided into four along the circumference on the circumference. A plurality of projections 16 are formed on the lower surface of the segment 1 (on the side of the center of the winding core 26) toward the center of the winding core 26. The projection 16 has a slope formed on one side in the axial direction of the winding core 26. Then, one end of the push rod 4 is attached to the winding core 2 in the axial direction of the center of the winding core 26.
6 is arranged so as to penetrate outside. The tip of the push rod 4 extended to the outside of the winding core 26 of the push rod 4 is attached to the open / close cylinder mounting retainer 11.
Is connected to the opening / closing cylinder 12 via the And
The push rod 4 is designed to move forward and backward in the axial direction by the forward and backward driving of the opening and closing cylinder 12.

[0004] A reel shaft 3 is provided around the push rod 4 inside the take-up core 26, similar to the push rod 4.
Its one end is extended outside. The reel shaft 3 has a flange-like diameter at a position protruding from the inside of the take-up core 26 to the outside, and a retainer 7 is provided around the take-up core 26 in this portion. The tip of the segment 1 on the opening / closing cylinder 12 side is held in a cylindrical shape. The end of the reel shaft 3 extended to the outside of the winding core 26 reaches the open / close cylinder mounting retainer 11. The reel shaft 3 is connected to a rotation drive source (not shown).

[0005] On the outer peripheral portion of the reel shaft 3 located inside the take-up core 26, a concave portion engaging with the wedge 2 and a concave portion engaging with the convex portion 16 of the segment 1, which will be described later, are respectively provided in the circumferential direction. It is formed at four places along. On the other hand, a reel center bearing 9 is provided on the outer periphery of a portion of the reel shaft 3 extended to the outside of the take-up core 26 near the take-up core 26, and a reel rear end bearing 10 is provided on the outer periphery of the leading end. Have been. The rotation of the reel shaft 3 is smoothly performed by the two bearings 9 and 10.

The wedge 2 is engaged with the recess of the reel shaft 3 so as to be able to advance and retreat in the axial direction. The outer side of each wedge 2 is formed with a slope facing the slope of the protrusion 16 of the segment 1 in addition to engaging with the protrusion 16 of the segment 1. The wedge 2 is connected to a push rod 4, and the wedge 2 also moves in the axial direction in response to the push rod 4 moving in the axial direction.
When the wedge 2 moves forward and backward in the axial direction, the inclined surface of the segment 1 is pushed along the inclined surface of the wedge 2, and each segment 1 advances and retreats in the radial direction of the winding core 26, thereby increasing the diameter of the winding core 26. ,to shrink. That is, when winding a steel plate around the winding core 26, the open / close cylinder 12 is operated to pull the push rod 4 to the arrow L side, move the wedge 2 in the arrow L direction, and move along the inclined surface of the wedge 2. The inclined surfaces of the segments 1 are moved, and each segment 1 is moved in the outer peripheral direction of the winding core 26, so that the diameter of the winding core 26 is enlarged. On the other hand, when removing the coiled steel plate from the winding core, the reverse operation is performed to move each segment 1 toward the center of the winding core 26,
The diameter of the winding core 26 is made smaller than the inner diameter of the coiled steel plate, and the coil is removed from the winding core 26.

Further, the opening / closing cylinder 1 of the winding core 26
A distal end support shaft 6 is connected to the side remote from 2. One end of the tip support shaft 6 on the take-up core 26 side is formed in a flange shape.
Support the tip of each segment 1 on the side not supported by the retainer 7. A tip support bearing 8 is provided on the outer periphery of the other tip of the tip support shaft 6, and the tip support shaft 8 smoothly rotates the tip support shaft 6.

In the winding device having the above-described configuration, it is necessary to change the diameter of the winding core 26 between the time of winding the steel plate and the time of extracting the coiled steel plate. Therefore, when the diameter of the winding core 26 is reduced, the adjacent segments 1 do not interfere with each other.
A certain gap is provided between the segments 1. However, when the diameter of the winding core 26 is increased, the gap is enlarged. Therefore, when the steel sheet is wound in this state, the coil is pushed into the enlarged gap,
There is a problem that buckling occurs in a portion near the center of the coil. The portion where the buckling occurs becomes a product defect, and the yield of the coil is remarkably reduced.

Therefore, as a conventional example for solving this problem, as shown in FIG. 9, when the diameter of the winding core 26 is increased, the segments 1 and , Ie, segment 1
A conventional example in which a subsegment 13 is provided so as to support both ears is known. This winding device has an outer peripheral portion located at an intermediate portion between the concave portions with which the wedges 2 of the reel shaft 3 are engaged, ie, the segments 1 and 1
And the inner wedges 14 are engaged with each other. The sub-segment 13 is engaged with the outer periphery of the winding core 26 of each inner wedge 14 in the same manner as the engagement between the segment 1 and the wedge 2. And each inner wedge 14 is a wedge 2
The inner wedge 1 is connected to the push rod 4 in the same manner as
The sub-segment 13 also advances and retreats in the radial direction of the winding core 26 by this movement. That is, when the push rod 4 is pulled by operating the opening / closing cylinder 12 to increase the diameter of the winding core 26, the sub-segment 13 moves in the outer circumferential direction of the winding core 26 and is generated between the segments 1. The sub-segment 13 is inserted into the gap, and the gap is filled. On the other hand, when extracting the coiled steel sheet from the winding core 26, the sub-segment 13 is moved in the direction of the center by performing the reverse operation to form a gap between the segments 1. I do. In this manner, the segments 1 are prevented from interfering with each other, and the occurrence of buckling near the center of the coil is reduced.

As shown in FIG. 10, the winding core 2 of the sub-segment 13 of the winding device shown in FIG.
Part where coil contacts when diameter of 6 is enlarged (outer surface)
By sticking an elastic member 15 to the outside of the segment 1 and projecting the elastic member 15 to the outside of the segment 1, the edge between the segment 1 and the sub-segment 13 is relaxed, and the edge prevents the inner diameter of the coil from being damaged. A winding device is known (JP-A-56-148412).

[0011]

As described above, the winding device provided with the sub-segment 13 includes the winding core 2.
When the diameter of 6 increases or decreases, the distance between the parts, that is, between the segment 1 and the wedge 2, between the segment 1 and the reel shaft 3, between the sub-segment 13 and the reel shaft 3, and between the sub-segment 13 And inner wedge 14
Between the components, a certain gap (usually 0. 0) is required to realize a smooth enlargement or reduction of the diameter of the winding core 26 by this sliding.
(1 to 0.5 mm) is essential.

However, if there is a gap between the parts, the segment 1 and the sub-segment 13 are pulled in the direction opposite to the winding direction (winding tension generating direction) due to the winding tension of the steel sheet generated when winding the steel sheet. As a result, there is a problem that a gap occurs between the segment 1 and the sub-segment 13 and a gap occurs in this portion.
This step is transferred to a portion near the center of the coil as it is, resulting in a product defect called a reel mark. The portion where the reel mark occurs must be removed by scraping or the like, and the yield of the coil is markedly reduced. There was a problem of lowering. In particular, when the steel plate is a thin plate, the occurrence of the reel mark becomes remarkable.

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and when winding a coil such as a steel plate, it is possible to prevent a reel mark from being generated on the coil and to improve the coil yield. It is an object of the present invention to provide a winding device.

[0014]

SUMMARY OF THE INVENTION In order to achieve this object, the present invention relates to a segment formed by combining a plurality of cylindrical winding cores and engaging the segments from the inside to advance and retract in the axial direction. A wedge that makes the diameter of the winding core variable, a sub-segment that can advance and retreat from the inside between the segments, and a sub-segment that is engaged with the sub-segment from the inside and rewinds in the axial direction to wind up the sub-segment. An inner wedge that advances and retreats in the radial direction of the core, and a reel shaft that supports the wedge and the inner wedge from the inside and supports the segment so as to be able to advance and retreat in the radial direction, and moves the segment and the sub-segment relative to the reel shaft. In a winding device in which the concave and convex engagement is performed so as to be able to advance and retreat in the radial direction, the longitudinal end of the segment is The surface, there is provided a winding apparatus characterized in that disposed a pressing member expands and contracts in the eccentric direction toward the rear rotating direction from the center of the winding core.

[0015]

When the diameter of the winding core is enlarged by pressing the pressing member in an eccentric direction facing the rotation direction rearward from the center of the winding core, that is,
For example, when winding a steel plate, the segment can always be held in a state where the segment is pressed to the side pulled by the winding tension of the steel plate. Therefore, during the work of winding the steel plate, the segment can be pressed against the reel shaft rearward in the rotation direction. For this reason,
Even if the winding tension of the steel plate is applied to the segment, the segment does not shift from a predetermined position, and the winding core can always be kept in a perfect circle.

[0016]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal cross-sectional configuration diagram of a winding device according to an embodiment of the present invention, and an upper portion than a broken line shown at the center of the shaft corresponds to an AA cross section shown in FIG.
The portion below the broken line corresponds to the BB section shown in FIG. 2 is an enlarged cross-sectional view of a pressing member mounting portion of the winding device shown in FIG. 1, and FIG. 3 is an enlarged partial cross-sectional view of the winding core of the winding device shown in FIG. FIG. 4 is a partially enlarged cross-sectional view taken along the line CC of FIG. 1 in a state where the diameter of the winding core of the winding device shown in FIG. 1 is enlarged.
6 is an enlarged partial cross-sectional view of the winding core of the winding device shown in FIG. 6 in a state where the diameter of the winding core is reduced. FIG. It is an expanded partial sectional view.

As shown in FIGS. 1 to 6, in the winding device of the present embodiment, a winding core 26 is constituted by four segments 1 of the same shape divided along the circumference along the axial direction. I have. The segment 1 and the four sub-segments 13 having the same shape are alternately combined. A plurality of projections 16 are formed on the lower surface of each segment 1 (on the center side of the take-up core 26), and an inclined surface is formed on one of these surfaces in the axial direction. Further, a similar convex portion 17 is formed on the lower surface of each sub segment 13. In the axial direction of the center of the winding core 26, one end of the push rod 4 is arranged so as to penetrate outside the winding core 26. One end of the push rod 4, that is, a tip extending to the outside of the winding core 26, is connected to the opening / closing cylinder 12 via the opening / closing cylinder mounting retainer 11. The push rod 4 is designed to be driven forward / backward by the forward / backward drive of the opening / closing cylinder 12.

The reel shaft 3 is externally fitted to the push rod 4. That is, this reel shaft 3
Takes up the winding core 26 with the push rod 4 installed inside.
One end is exposed to the outside. The diameter of the reel shaft 3 is increased in a flange shape at a position protruding from the inside of the take-up core 26 to the outside, and a retainer 7 is provided around the outer peripheral end of the take-up core 26 at this portion. . The retainer 7 has a cylindrical shape, and holds the distal end of each segment 1 and sub-segment 13 on the opening / closing cylinder 12 side from the outside. The leading end of the reel shaft 3 extended to the outside of the take-up core 26 reaches the open / close cylinder mounting retainer 11 and is connected to a rotation drive source (not shown). Rotates.

On the outer peripheral portion of the reel shaft 3 located inside the take-up core 26, a concave portion 3a engaging with the wedge 2 and a concave portion 3b engaging with the convex portion 16 of the segment 1, which will be described later, are provided. , Inner wedge 1 described later
4 and the convex portion 1 of the sub-segment 13
A recess 3d that engages with the recess 7 is formed. On the other hand, a reel center bearing 9 is installed on the outer periphery of a portion of the reel shaft 3 extended to the outside of the winding core 26 near the winding core 26, and the reel shaft 3 extended to the outside of the winding core 26 is provided. A reel rear end bearing 10 is provided on the outer periphery of the front end portion. The rotation of the reel shaft 3 is smoothly performed by the two bearings 9 and 10.

The wedge 2 is individually engaged with the concave portion 3a of the reel shaft 3, and the inner wedge 14 is individually engaged with the concave portion 3c, and these are alternately arranged in the circumferential direction. Outside the wedge 2 and the inner wedge 14, inclined surfaces corresponding to the inclined surfaces of the convex portion 16 of the segment 1 and the convex portion 17 of the sub-segment 13 are formed. Then, the wedge 2 and the inner wedge 14
1 are connected to the push rod 4 at the right end in FIG. 1, and are designed so that the wedge 2 and the inner wedge 14 are also driven in the axial direction in accordance with the axial drive of the push rod 4. When the wedge 2 advances and retreats in the axial direction, the inclined surface of the segment 1 which is in contact with the inclined surface is pushed along the inclined surface of the wedge 2, and each segment 1 is advanced and retracted in the radial direction of the winding core 26, The diameter of the winding core 26 is enlarged or reduced. Similarly, when the inner wedge 14 moves forward and backward in the axial direction, the inner wedge 14 moves forward and backward in the radial direction of the winding core 26.

Further, the opening / closing cylinder 1 of the winding core 26
A distal end support shaft 6 is connected to the side remote from 2. One end of the tip support shaft 6 on the take-up core 26 side is formed in a flange shape.
Supports the other end of each segment 1 (the side not supported by the retainer 7). A tip support bearing 8 is provided on the outer circumference of the other end of the tip support shaft 6.

Further, a pressing member 27 is provided at the tip of the retainer 7 and the flange portion 18 for each segment. The pressing member 27 is attached to a bracket 30 fixed to the retainer 7 and the flange portion 18, and includes a winding core 26.
A pin 29 that is movable back and forth in the direction of rotation from the center O, and a spring 3 that urges the pin 29 in the aforementioned direction.
1 and a C-shaped retaining ring 28 at the head of the pin 29 for retaining the pin 29. Then, the spring 31
Urges the segment 1 from the outer surface of the longitudinal end portion of the segment 1 in the eccentric direction that is directed rearward in the rotation direction 50 from the center O of the winding core. That is, when the diameter of the winding core 26 is increased, the pressing member 27 contacts the outer surface of the longitudinal end of the segment 1, and when the diameter is further expanded, the pressing member 27 becomes larger than the center O of the winding core 26. When the segment 1 is pressed in the eccentric direction facing the rear side of the rotation direction 50 and the steel sheet is wound, the segment 1 is always held and fixed in a state where the segment 1 is pressed to the side pulled by the winding tension of the steel sheet. Then, the winding core 26 has a perfect circular shape in this state. On the other hand, when the diameter of the take-up core 26 is reduced, the pressing member 27 is separated from the segment 1, contrary to the above.

Next, a specific operation of the winding device will be described. First, when a certain process is completed and the steel sheet supplied from the outlet side of the line is wound into a coil shape using the winding device of the present embodiment, the open / close cylinder 1 is used.
2 to pull the push rod 4 toward the arrow L,
The wedge 2 is moved in the direction of the arrow L. With this movement, the inclined surface of the segment 1 which is in contact with the inclined surface of the wedge 2 is pushed, and each segment 1 is moved in the outer circumferential direction of the winding core 26, and the winding core 26 is moved. Enlarge the diameter of In parallel with this movement, the inner wedge 14 also pushes the inclined surface of the sub-segment 13 in the direction of arrow L, and moves each sub-segment 13 in the outer peripheral direction of the winding core 26, as shown in FIG. The sub-segment 13 is inserted into the gap generated between the segments 1. By doing so, the gap created between the segments 1 can be filled with the sub-segments 13. Further, in parallel with this movement, as shown in FIG. 4, the pressing member 27 presses the segment 1 in an eccentric direction toward the rear of the rotation direction 50 from the center O of the winding core 26. Due to this pressing, the segment 1 is pulled by the winding tension of the steel plate, that is, the side wall of the protrusion 16 in the direction opposite to the rotation direction 50, and the side wall of the recess 3b of the reel shaft 3 facing the side wall of the protrusion 16. Are pressed and fixed. As described above, by pressing and fixing the portions that come into contact when the segment 1 is pulled by the winding tension of the steel plate in advance,
Even when the winding tension is applied to the segment 1, the segment 1 does not deviate from a predetermined position, and the winding core 26 can always be kept in a perfect circular state during the winding operation of the steel plate.

Next, a desired amount of steel plate is wound around the winding core 26 in this state, and a coil is manufactured. Next, after the winding of the predetermined amount of the steel sheet is completed, the opening / closing cylinder 12 is operated, and the push rod 4 is pushed in the direction of the arrow S to move the wedge 2 in the direction of the arrow S. With this movement, the inclined surfaces of the segments 1 that are in contact with the inclined surface of the wedge 2 move in the opposite direction to the above, and each segment 1 moves toward the center of the winding core 26. Then, the diameter of the winding core 26 is reduced. In parallel with this movement, the inner wedge 14 also moves in the direction of arrow S. With this movement, along the inclined surface of the inner wedge 14, the sub-segments 13 in contact with the inclined surface
Move in the opposite direction to the above, each sub-segment 13 moves toward the center of the take-up core 26, and the sub-segment 13 retreats from between the segments 1 as shown in FIG. A gap is formed between the two. Further, in parallel with this movement, the segment 1 is pressed by the pressing member 27.
Release from the pressing of the segment 1 and the reel shaft 3
And a gap is formed between them. By doing so, the diameter of the winding core 26 can be reduced smoothly. As described above, the diameter of the winding core 26 is reduced from the inner diameter of the coiled steel plate, and the coil is extracted from the winding core 26.

In the coil manufactured by the above-described method, no reel mark was generated even in a portion near the center. As a result, a good coil with significantly improved yield could be manufactured. In this embodiment, the pressing member 2
7 are arranged one at each end of each segment 1. However, the present invention is not limited to this. The number of segments 1 to be arranged is determined arbitrarily according to the material of the pressing member 27, the magnitude of the winding tension, and the like. Good.

In this embodiment, the case where the pressing member 27 presses the segment 1 when the diameter of the winding core 26 is enlarged has been described. However, the present invention is not limited to this. If the protrusion side wall in the direction opposite to the rotation direction 50 and the recess side wall of the reel shaft 3 that engages with the protrusion side can be held in a pressed state, the diameter of the winding core 26 can be initially increased. Pressing member 2
7 may be pressing segment 1.

In this embodiment, the pressing member 27 using the spring 31 has been described. However, the present invention is not limited to this, and it goes without saying that a pressing member having another structure may be used. Further, in this embodiment, the winding of the steel sheet has been described, but the present invention is not limited to this, and it is needless to say that the steel sheet may be used for a winding device for winding other materials.

[0028]

As described above, according to the winding device according to the present invention, the outer surface of the longitudinal end portion of the segment is provided with the eccentric direction facing the rotation direction rear side from the center of the winding core. By disposing the pressing member that expands and contracts, the segment can be pressed against the reel shaft rearward in the rotation direction at all times during the coil winding operation.
Even if a winding tension is applied to the segment, the segment does not shift from a predetermined position. For this reason, the winding core can always be kept in a perfect circle, and the occurrence of reel marks on the coil can be prevented. As a result, the yield of the coil can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional configuration diagram of a winding device according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a pressing member mounting portion of the winding device shown in FIG.

FIG. 3 is an enlarged partial cross-sectional view of the winding core of the winding device shown in FIG. 1 in a state where the diameter of the winding core is enlarged.

4 is an AA enlarged partial cross-sectional view of the winding device shown in FIG. 1 in a state where the diameter of a winding core is enlarged.

FIG. 5 is an enlarged partial cross-sectional view of the winding core of the winding device shown in FIG. 1 in a state where the diameter of the winding core is reduced.

6 is an AA enlarged partial cross-sectional view of the winding device shown in FIG. 1 in a state where a diameter of a winding core is reduced.

FIG. 7 is a cross-sectional configuration diagram of a conventional winding device.

FIG. 8 is an enlarged sectional view of a winding core of a conventional winding device.

FIG. 9 is an enlarged sectional view of a winding core of a conventional winding device.

FIG. 10 is an enlarged sectional view of a winding core of a conventional winding device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 segment 2 wedge 3 reel shaft 4 push rod 6 tip support shaft 7 retainer 12 opening / closing cylinder 13 subsegment 14 inner wedge 16 convex portion 17 convex portion 26 take-up core 27 pressing member 28 C-type retaining ring 29 pin 30 bracket 31 spring 50 Rotation direction 51 Segment center

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B21C 45/00-49/00 B65H 75/24

Claims (1)

(57) [Claims] A segment formed by combining a plurality thereof to form a cylindrical take-up core; a wedge which is engaged with the segment from the inside to change the diameter of the take-up core by moving forward and backward in an axial direction; A sub-segment that can be advanced and retracted from the inside between the segments, and an inner wedge that engages with the sub-segment from the inside to advance and retreat the sub-segment in the radial direction of the winding core by axially retreating,
A reel shaft that supports the wedge and the inner wedge from the inside and supports the segment so as to be able to advance and retreat in the radial direction. A winding device, comprising: a pressing member that expands and contracts in an eccentric direction facing rearward in the rotation direction from the center of the winding core on an outer surface of a longitudinal end portion of the segment. Taking device.