JPH0752126Y2 - Winding core support structure for strip winding machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for supporting a winding core for winding a belt-like material such as a piece of cloth on a cylindrical winding core.

[0002]

2. Description of the Related Art Generally, when a large number of rolls of fabric are subdivided into a small amount suitable for retailing or wholesale, the subdivided fabric of a predetermined length is a cylindrical core made of corrugated paper or resin. It is designed to be rolled up.

As a device for winding a piece of cloth around such a cylindrical winding core, conventionally, a pair of winding shafts axially separated from each other and opposed to each other are provided in the main body of the device, and the winding shafts are rotated in synchronization with each other. A winding machine is known which is configured to be driven, and is configured to detachably hang and support the cylindrical core between a pair of the winding shafts. In the conventional winding machine, the mechanism for removably attaching the cylindrical winding core to the winding shaft forms a receiving portion to which the ends of the cylindrical winding core are fitted, respectively, on these winding shafts. The receiving end is configured to fit and support the open end of the cylindrical winding core.

[0004]

However, in the above-described conventional core support structure, since the core is supported by the receiving portion with which the inner surface or the outer surface of the end portion of the core fits, the core core of the cylindrical core is supported. If the diameter changes, it cannot be fitted to the receiving part,
Therefore, each time the diameter of the winding core changes, it is necessary to replace the winding shaft with a receiving portion having a different diameter. Therefore, it is necessary to prepare various kinds of winding shafts corresponding to the diameter of the cylindrical winding core, resulting in an increase in the number of parts and a troublesome replacement work.

The present invention has been made in view of the above circumstances, and an object thereof is to wind a belt-shaped material winding machine which can be mounted on a winding core having a different diameter without replacing the winding shaft. To provide a core support structure of

[0006]

In order to achieve the above object, the present invention is provided with a pair of winding shafts axially spaced from each other and facing each other in the winding machine body, and these winding shafts have a cylindrical winding core. In a strip-shaped material winding machine in which the strip-shaped material is wound around the cylindrical winding core by rotatably driving at least one of the winding shafts; An inner pressing portion having a circular cross section into which the opening end of the winding core is inserted and abutted against an inner surface of a side wall of the opening end of the winding core; and an inner pressing member provided on the winding shaft and having a cross section. Is formed in an arc shape having a radius larger than the radius of the core, has a circumferential length of a semicircle or less, and is eccentrically provided with respect to the inner pressing member. And an outer presser part, which is provided by the inner presser part and the outer presser part. The part of the side wall of the open end of Kimakishin characterized by being adapted to clamping.

[0007]

According to the present invention, a part of the side wall of the open end of the winding core is sandwiched between the inner pressing portion and the outer pressing portion, whereby the winding core can be supported. In this case, the outer presser section has an arc shape whose cross section has a radius larger than the radius of the inner presser section, and at least a part of the inner surface of the outer presser section is the outer surface of the side wall of the opening end of the winding core. Therefore, the core can be supported regardless of the diameter of the core within the range of the outer diameter of the inner pressing portion and the inner diameter of the outer pressing portion. Therefore, as long as the core has a diameter within the above range, the cores having different diameters can be attached without replacing the winding shaft.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the first embodiment shown in FIGS. In FIG. 3, reference numeral 1 denotes a main body of a winder that winds, for example, a piece of cloth as a belt-like material, and the winder main body 1 has side walls 2 facing each other.
2 and bearings 3 and 3 are provided on the side walls 2 and 2. A pair of rotary drive shafts 4 and 4 axially separated from each other and facing each other are rotatably pierced through the bearings 3 and 3. The rotary drive shafts 4 and 4 are movably supported in the axial direction. ing.

Driven gears 5 and 5 are attached to the outer ends of the drive shafts 4 and 4, and the driven gears 5 and 5 are rotated by a motor (not shown) serving as a drive source. 6 is in mesh. Therefore, when the motor rotates, the driven gear 5,
5 is rotated, so that the drive shafts 4 and 4 are rotated. In this case, these opposing drive shafts 4 and 4 are rotated in the same direction at a constant speed.

When the drive shafts 4 and 4 are moved in the axial direction, the drive gears 6 and 6 and the driven gears 5 and 5 are disengaged from each other. Therefore, these gears are spur gears. It is desirable to be configured. Further, the driving means for driving the drive shafts 4 and 4 is not limited to gear driving, but may be belt driving, chain driving, or the like.

The drive shafts 4, 4 facing each other as described above
Large-diameter portions 7 and 7 are formed at the inner end portion of, and springs 8 and 8 are provided between the large-diameter portions 7 and 7 and the side walls 2 and 2 of the winder body. There is. These springs 8 and 8 urge the drive shafts 4 and 4 toward each other.

A winding shaft 1 is attached to each of the drive shafts 4 and 4.
0 and 10 are detachably attached. One of the winding shafts 10 and 10 is shown in FIGS. 1 and 2 and will be described based on this. That is, the winding shaft 10 is made of metal such as stainless steel and has a flange portion 11,
A connecting shaft 12 is integrally formed at one end of the flange portion 11, and a holding portion 15 is formed at the other end.

The connecting shaft 12 is adapted to be fitted into an insertion hole 13 formed on the inner end surfaces of the drive shafts 4 and 4, and is driven by a set screw 14 screwed to the large diameter portion 7.
It is designed to be fixed to. When the set screw 14 is loosened and the winding shaft 10 is pulled out, the connecting shaft 12 is pulled out from the insertion hole 13, and thus the winding shaft 10 can be removed from the drive shaft 4.

In the present embodiment, the holding portion 15 formed on the other end of the flange portion 11 is formed as follows. That is, 16 is an inner pressing portion that is formed so as to integrally project from the flange portion 11 in the axial direction, and this inner pressing portion 16 is formed in a cylindrical shape having a diameter smaller than the diameter of the flange portion 11. The inner pressing portion 16 is the winding shaft 1
It is formed at a position eccentric from the center of rotation of zero. 17
Is an outer pressing portion, which is formed by forming a stainless steel plate into a substantially gutter shape. That is, the outer pressing portion 17 has an arc shape whose cross section extends along the outer peripheral surface of the flange portion 11, the inner surface of one end is overlapped with the outer surface of the flange portion 11, and is detachably attached to the flange portion 11 by the screw 18. Has been. The outer pressing portion 17 has a perimeter of a semicircle or less in cross section, and thus has a gutter shape. This outside presser part 1
Since the radius of curvature of 7 is along the outer peripheral surface of the flange portion 11, it is approximately similar to the radius of the flange portion 11, and therefore is eccentric from the center of the cylindrical inner pressing portion 16. The radius of curvature of the outer pressing portion 17 is larger than the radius of the cylindrical inner pressing portion 16.

A gap is formed between the inner pressing portion 16 and the outer pressing portion 17, and this gap is not a uniform gap along the circumferential direction, but the central portion when the outer pressing portion 17 is cross-sectioned. The gaps are formed so as to be the smallest at the locations corresponding to, and these gaps are changed so as to increase from the minimum gap portion in the left-right direction.

The above-mentioned minimum gap portion has a core 2 for winding a piece of cloth.
When the side wall of the open end of the winding core 20 is pushed into this gap, the winding core 20 and the inner pressing portion 16 and the outer pressing portion 17 are rubbed with each other.
The open end of the is set so that it is supported without slipping. Therefore, this minimum gap portion constitutes the holding portion 15. The winding core 20 is made of corrugated paper or synthetic resin and has a cylindrical shape.

The operation of the embodiment having such a configuration will be described. A pair of winding shafts 10, 10 which are axially separated
When the cylindrical winding core 20 is spanned between them, the procedure is as follows. That is, the take-up shaft 10,
Since 10 is fixed by the setscrew 14, the rotary drive shafts 4, 4 are pushed outward against the force of the springs 8, 8 to widen the distance between the winding shafts 10, 10.

In this state, the cylindrical winding core 20 is laid between the winding shafts 10 and 10. In this case, the side walls of the open end of the cylindrical winding core 20 are inserted into the gaps formed between the inner pressing portion 16 and the outer pressing portion 17 of the winding shafts 10 and 10, that is, the holding portion 15. Since the minimum gap portion formed between the inner pressing portion 16 and the outer pressing portion 17, that is, the holding portion 15 has a space approximately equal to the wall thickness of the winding core 20, the end of the cylindrical winding core 20 is When the side wall of the portion is pushed into the gap 19, a part of the side wall of the winding core 20 in the circumferential direction is clamped between the inner pressing portion 16 and the outer pressing portion 17. That is, the inner pressing portion 16 and the outer pressing portion 17 sandwich a part of the side wall of the opening end of the winding core 20 in the circumferential direction, and the cylindrical winding core 20 is supported by these frictions.

In this state, the winding shafts 10 and 10 are released, and the winding shafts 10 and 10 are moved so as to approach each other by the urging force of the springs 8 and 8, and the core 20 is pressed by these pressing forces. Hold down in the axial direction. Then, the end portion of the cloth A to be wound is wound around the outer circumference of the winding core 20 two to three times. In this case, the cloth A is also wound on the outer surface of the outer pressing portion 17.

In this state, the motor drives the driving gears 6, 6
When the driven gears 5 and 5 are rotated through the drive shafts 4 and 4 and the drive shafts 4 and 4 are rotated, the winding shafts 10 and 10 are also integrally rotated, and thus the winding core 20 is also rotated. You will wind up A.

When the cloth A having a predetermined length is wound around the winding core 20 in this manner, the motor is stopped and the winding shaft 1 is stopped.
0, 10 and the rotation of the core 20 are stopped, and the rotary drive shaft 4,
4 is pushed outward against the force of the springs 8 and 8 to widen the distance between the pair of winding shafts 10 and 10. Then, the core 20
Ends of the winding shafts 10 and 10 are pulled out from between the inner pressing portion 16 and the outer pressing portion 17, and the winding core 20 around which the cloth A is wound is removed from the winding shafts 10 and 10. For this reason, the winding core 20 in a state in which the cloth A is wound is taken out.

In the structure of this embodiment, the inner core 16 and the outer press 17 formed on the winding shaft 10 sandwich the core 20 and the friction of these supports the cylindrical core 20. The support structure of the winding core 20 is simple.

When the diameters of the winding cores 20 are different, as shown in FIG.
As shown in (a), (b) and (c) of FIG. 1, the winding shafts 10 and 10 can be shared without replacement. That is, in the case of FIG. 2A, the outer pressing portion 17
Core 20 having a diameter such that it makes surface contact with the inner surface of the core
In this winding core 20, a part of the side wall of the opening end in the circumferential direction is provided with an inner pressing portion 16 and an outer pressing portion 17.
It is sandwiched between and. Further, in the case of FIG. 2B, a case where a winding core 20 having a diameter smaller than that of the outer pressing portion 17 but larger than that of the inner pressing portion 16 is used is shown. A part of the side wall in the circumferential direction is sandwiched between the inner pressing portion 16 and the outer pressing portion 17. Further, in the case of FIG. 2C, a case is shown in which a core 20 having a diameter equivalent to the diameter of the inner pressing portion 16 is used.
In the case of 0, a part of the side wall of the opening end portion in the circumferential direction is sandwiched by the inner pressing portion 16 and the outer pressing portion 17.

That is, since the side wall of the open end of the winding core 20 is partially sandwiched by the inner pressing portion 16 and the outer pressing portion 17 in the circumferential direction, the winding core is larger than the outer diameter of the inner pressing portion 16 and is outside. If the cylindrical core 20 has a diameter smaller than the inner diameter of the holding portion 17, it can be attached to the above-described winding shafts 10 and 10 to wind the cloth A. Therefore, if the winding core 20 has a diameter within the above range, the winding shafts 10 and 10 can be attached to the winding shafts 10 and 10 without replacement.

When the cloth A is wound, it is preferable that the winding core 20 is not eccentric. From this point of view, FIG.
As shown in (a) of FIG. 6, when the winding core 20 having a size that comes into surface contact with the inner surface of the outer pressing portion 17 is used, no runout occurs, and the cloth A is wound around the winding core 20 in a substantially circular shape. It is preferable because it will be possible.

On the other hand, in the case of FIGS. 2B and 2C, the winding core 20 is eccentric from the center of rotation, and the outer pressing portion 17 having a large inner diameter exists on the outer side. The piece of material is eccentric and is wound into an elliptical cross section. However, the piece of cloth also has a property of being slightly stretched when a tensile force is applied during winding, and even when the piece of cloth is wound around the eccentric winding core 20 in an elliptical shape as shown in FIGS. 2B and 2C. After the winding core 20 is pulled out from the winding shafts 10 and 10, the outer pressing portion 17 does not exist at the winding center portion of the cloth A,
Due to the elastic recovery of the cloth material, it is wound around the outer circumference of the core 20 in a substantially circular shape.

In the case of the above embodiment, the inner pressing portion 16 formed on the winding shaft 10 is eccentric from the rotation center, and the outer pressing portion 17 has an arc shape centering on the rotation center so that the outer pressing portion 17 has a circular shape. Although the minimum gap is formed in the center of the cross section, the present invention is not limited to this, and the second gap shown in FIG. 4 may be adopted.

That is, in the case of the second embodiment, the inner pressing portion 16 is formed on the flange portion 11 of the winding shaft 10 such that the center thereof coincides with the rotation center, and the flange portion 1
An outer presser portion 17 is attached to the outer peripheral portion of the outer peripheral portion 1. The outer presser portion 17 is formed in an arc shape having a center of curvature eccentric from the center of rotation and having a larger diameter than the inner presser portion 17. Even in this case, the holding portion 15 can be formed in the minimum gap between the inner pressing portion 16 and the outer pressing portion 17, and since the holding portion 15 is formed at a position eccentric from the rotation center, The outer diameter of the inner pressing portion 16 and the outer pressing portion 17
Within the range of the inner diameter of, the cores having different diameters can be supported.

Since the outer pressing portion 17 of the first and second embodiments is attached to the flange portion 11 by the screw 18, it can be replaced in the case of breakage. Therefore,
When it is desired to attach a winding core having a diameter larger than the inner diameter of the outer pressing portion 17, it may be replaced with another outer pressing portion 17 having a large radius of curvature.

Further, the outer pressing portion 17 is not limited to the gutter-shaped one having a circular arc cross section, but may be implemented by a plurality of rods 17 ... Arranged in an arc shape as shown in FIG. Is.

Further, the inner pressing portion 16 is not limited to a cylindrical shape and may be a cylindrical shape. Further, each inner pressing portion 16 and outer pressing portion 17 may be elastically deformable, and the side wall of the winding core 20 may be held by these elastic forces.

Further, although the winding shaft 10 is detachably attached to the drive shaft 4 in the above embodiment, the core support structure of the present invention may be directly formed on the drive shaft 4, in other words, the present invention. Can be implemented even if the winding shaft 10 and the rotary drive shaft 4 are integrated. Further, the present invention is not limited to the winding of a piece of cloth, and can be carried out even for winding a strip of paper or the like.

[0033]

As described above, according to the present invention, a part of the side wall of the opening end of the cylindrical winding core is held between the inner pressing portion and the outer pressing portion formed on the winding shaft. In this case, the outer presser section has an arc shape whose cross section has a radius larger than the radius of the inner presser section, and at least part of the inner surface of the outer presser section is the open end of the winding core. Since it comes into contact with the outer surface of the side wall of the core, the core can be supported regardless of the diameter of the core within the range of the outer diameter of the inner pressing portion and the inner diameter of the outer pressing portion. Therefore, as long as the core has a diameter within the above range, the cores having different diameters can be attached without replacing the winding shaft. For this reason, even if the diameter of the cylindrical winding core changes, the winding shaft can be shared without replacement, there is no need to prepare a large number of types of winding shaft, the cost is low, and the replacement work is easy. Easy,
Workability is improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a drive shaft, a winding shaft, and a cylindrical winding core according to a first embodiment of the present invention.

FIG. 2 is a view for explaining the operation of the embodiment, FIG.
The figure (b) and the figure (b) are sectional views showing a state in which cylindrical cores having different diameters are supported.

FIG. 3 is a cross-sectional view showing the main parts of the cloth winding machine of the embodiment.

FIG. 4 is a sectional view of a winding shaft supporting a cylindrical core according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a winding shaft supporting a cylindrical core according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Device main body 2 ... Side wall 4 ... Rotation drive shaft 5, 6 ... Gear 8 ... Spring 10 ... Winding shaft 11 ... Flange part 15 ... Holding part 16 ... Inner pressing part 17 ... Outer pressing part 20 ... Cylindrical core

Claims (1)

[Scope of utility model registration request] 1. A pair of winding shafts which are opposed to each other, at least one of which is axially movable, and at least one of which is rotatably driven and which is attached to a winding machine main body; An inner pressing portion which is provided on the winding shaft and into which the opening end of a cylindrical core for winding up a strip is inserted and the side wall inner surface of the opening end of the winding core abuts; The winding shaft is provided with a cross section of an arc shape having a radius larger than the radius of the inner pressing portion, the circumferential length is not more than a semicircle, and is provided eccentrically with respect to the inner pressing portion. An outer pressing portion against which the outer surface of the side wall of the opening end of the core abuts; and a part of the side wall of the opening end of the winding core is held by the inner pressing part and the outer pressing part. A core support structure for a band-shaped material winding machine.