JPH0811648B2 - Strip 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 an apparatus for winding a strip of metal foil, paper, resin film or the like without using a core tube.

[0002]

2. Description of the Related Art As the expansion / contraction mechanism of a winding shaft for winding a belt-shaped body (object to be wound), those shown in FIGS. 3 and 4 have been conventionally used. That is, FIG. 3 shows a winding mechanism that directly winds the object to be wound 52 around a roll 51 which is relatively flexible as compared with a metal such as a resin roll. Is a mechanism that secures the winding force and obtains a winding torque by the contact friction between the roll and the innermost circumference of the material to be wound. Further, in order to pull out the material to be wound from the winding shaft, the roll is pulled out by the force that overcomes this contact friction. This mechanism is generally used in a manual winding device that does not use an automated device such as an electric motor.

On the other hand, FIG. 4 is composed of a shaft core 53 which is divided into two in the axial direction of a solid cylinder and a supporting portion thereof, and a winding object 54 is sandwiched between the split parts and the shaft core 53 is rotated by an electric motor 55. Shows a winding device. In this system, the winding force of the winding target itself is pressed at the time of initial one-round winding, so that the gripping force of the winding target 54 is secured without using the expansion / contraction mechanism. The dimensional accuracy (cylindricity) of the inner circumference of the material to be wound at this time is determined by the shape of the shaft core 53. With this mechanism, the material to be wound is
It is generally used when winding into a solid state.

[0004]

For example, in the case of winding a strip of metal foil or the like without a core tube, unless the cylindricity of the innermost winding is secured, the material to be wound is wound. This causes wrinkles, bending, deviation, and meandering. From such a point, it is necessary that the winding shaft is accurately in the reference cylindrical shape. Further, in order to secure a grip force sufficient to exert the winding torque, it is necessary to push out the inner surface of the cylindrical object to be wound by force control.
Also, to easily remove the material to be wound from the winding shaft,
An expansion / contraction mechanism that displaces two positions, a standard cylindrical state and a state in which this state is contracted by a certain distance, is required. That is, an expansion / contraction mechanism by displacement control from the most contracted state to the reference cylinder and a force control mechanism by force control that secures a grip force from the reference cylinder state are indispensable.

On the other hand, in the case as shown in FIG.
Since 1 has no expansion / contraction mechanism, the winding torque depends on the contact frictional force between the roll and the innermost circumference of the material to be wound 52, and the torque that rises as the material to be wound becomes thicker is If the contact frictional force is exceeded, the material to be wound and the winding shaft will slip and winding will be difficult.

In the case of FIG. 4 as well, the winding shaft 53 and the object to be wound 5 are similar to those of a solid winding without a core tube.
When the contact area with 4 is small and the contact friction resistance at the time of extraction is small, it does not matter, but when wound in a cylindrical shape, the contact area becomes large and there is no expansion / contraction mechanism.
Since the torque increases as the winding target becomes thicker, the winding shaft is tightened by the winding target, which makes it difficult to remove the winding target.

The present invention is a strip winding device for a metal foil or the like which does not have the above-mentioned problems, and more specifically, when winding a wound object without a core, the first winding is wound. The cylindricity of the winding shape is ensured at the time of winding, and the deviation of the wound object during winding,
To prevent wrinkles, bending, and meandering, to prevent slippage due to increased torque due to winding thickening, and to take up a wound object after winding from a winding shaft with ease. It is provided.

[0008]

SUMMARY OF THE INVENTION The gist of the present invention is to provide a winding device in which a winding shaft of a strip of metal foil or the like can be freely expanded and contracted in a radial direction .
Take-up from the retracted position of the take-up shaft when taking out the take-up shaft from the take-up shaft.
At the time of winding, the winding shaft expansion / contraction mechanism by displacement control using a taper segment etc. to the predetermined reference cylinder position, and the reference cylinder
A winding device for a belt-shaped body, which has a two-stage expansion / contraction mechanism of a winding shaft expansion / contraction mechanism by force control using a fluid expansion / contraction tube or the like that generates a gripping force from a state .

The winding device according to the present invention has, for example, a taper portion 20 as a mechanism for displacing the expansion / contraction segment 1 which is free to move in the radial direction and the expansion / contraction segment by a predetermined distance, and is aligned with the winding shaft. And a fixed-side taper segment 2 capable of rotating in synchronization with the winding shaft,
The expansion / contraction segment 1 is supported by the expansion / contraction segment mounting portion.
It has a fit notch and the fixed-side tapered segment 2
A cylindrical sleeve 3 having a taper portion 24 for displacing the expansion / contraction segment 1 by a predetermined distance, and a winding shaft support portion 14 rotatably supporting one end of the sleeve 3.
It is provided on the winding shaft a displacement control scaling mechanism consisting of
It Further , as a mechanism capable of pressing and expanding the inner surface of the expansion / contraction segment 1 by a constant force from the inside of the rotatable winding shaft, for example, a rubber tube 4 expanded by air pressure.
And a force control expansion / contraction mechanism including the air supply pipe, a ring spring 7 for contracting the expansion / contraction segment 1, and a rotation driving system for the winding shaft, for example, an electric motor 8 , a belt and a pulley, and the winding shaft is moved in the axial direction. As a mechanism for, for example, a carriage 10 guided by a rail 9 or the like in the winding axis direction.
And a table or the like as a mechanism for collecting the material to be wound. In addition,
As a mechanism for displacing the expansion / contraction segment, a link mechanism or a cam mechanism may be used as a method other than the taper.

In the present invention, the winding shaft moves in the axial direction,
The convex part of the take-up shaft and the concave part of the fixed side taper segment engage each other to align the take-up shaft, and at the same time as the above operation, the take-up shaft is pressed against the fixed side taper segment to fix the end of the expansion / contraction segment. The taper part rises and expands the taper part of the fixed-side taper segment by a certain amount, and the parallel parts of the fixed-side taper segment and the winding shaft sleeve position by pressing the parallel parts of both ends of the expansion / contraction segment. A roll
To prevent slippage at the contact surface between the winding shaft and the material to be wound, wind the material around the winding shaft for one initial round and then wind the material to be wound while rotating the winding shaft. Applying pressure, rotating the winding shaft, winding the material to be wound with a predetermined tension, releasing the compressed air after winding, and contracting the expansion / contraction segment with the ring spring, and during expansion. By performing the operation of extracting the winding shaft from the material to be wound in the reverse process, it is possible to perform accurate coreless winding and easy removal of the material to be wound after winding. .

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The features of the present invention will be specifically described below with reference to the drawings. In the example of the winding shaft shown in FIG. 1 (a), four expansion / contraction segments 1a, 1b, 1 are provided on the outer circumference of the sleeve 3.
c and 1d are arranged every 90 degrees, and this sleeve 3
A cylindrical rubber tube 4 is built inside. In addition, the expansion / contraction segment 1 includes two ring springs 7a and 7b.
Are connected to each other, and when the carriage 10 is in the retracted position and no air pressure is applied to the rubber tube 4, the expansion / contraction segment 1 is pulled back by the ring spring 7 in the axial direction,
The expansion / contraction segment 1 is in close contact with the outer surface of the sleeve as shown in FIG. This state is the origin position of this device. The winding shaft has a cantilever structure that is rotatably supported by the support mechanism 14.

Next, as shown in FIG. 1B, the carriage 10
Using the air cylinder 11, while advancing in the winding axial direction while being guided by the rail 9, the parallel portion 21 of the fixed taper segment 2 collides with the parallel portion 22 of the tip end side of the expansion / contraction segment 1, and the parallel portion of the sleeve 3 collides. Linear movement is performed until 23 collides with the rear end side parallel portion 22b of the expansion / contraction segment 1. At this time, the winding shaft tip convex portion 25 is chamfered at the end,
Even if the axial centers of the winding shaft and the fixed-side taper segment 2 are slightly deviated from each other, they are engaged with each other while following the recesses 18 of the fixed-side taper segment 2, and the rotational shaft centers of the both match. Further, the taper portions 19a and 19b of the expansion / contraction segment are the taper portions 20 and 2 of the sleeve 3 and the fixed side taper segment 2.
In order to raise 4, the robot 4 is expanded and positioned as shown in FIG. The outer circumference of the expandable / contractible segment 1 is pre-processed to have a predetermined circumference and a predetermined cylindricity determined in this state to ensure the accuracy of the inner diameter dimension and cylindricity of the material to be wound 17, and to prevent wrinkles during winding. Prevents bending, slipping, and meandering.

Next, an initial one-round winding is performed by a winding device separately equipped with the object to be wound 17, and further,
An initial one-turn winding cylinder is formed by using a connecting device such as a spot welding machine, which is separately provided. Then, by supplying compressed air to the rubber tube 4 in the winding shaft core from the rotary joint 5 of the winding shaft, the rubber tube 4 presses the expansion / contraction segment 1.
As shown in (c), the expansion / contraction segment 1 presses the inner circumference of the material to be wound 17. The compressed air is supplied by the air piping system 6
It is performed by operating the valve 15 provided in the above, and this can be performed automatically.

From this state, the winding shaft can be rotated by, for example, a rotary drive system using an electric motor 8 connected by a timing belt 16 and wound. Next, the wound object 17
After winding a predetermined amount, the object to be wound is cut by a separately equipped cutting machine or the like, and the final end is wound by a separately equipped spot welding machine or the like as shown in FIG. 2D.

Next, the operation of pulling out the winding shaft will be described. First, the compressed air in the rubber tube 4 is moved to the valve 1
5 is released by switching, the ring spring 7 pulls the expansion / contraction segment 1 in the axial direction, and the force for pressing the material to be wound is released, and the expansion / contraction segment 1 is in the state of FIG. 2B . Next, the bogie 10 is retracted by the air cylinder 11, so that the expansion / contraction segment 1 is pulled back by the ring spring 7 at the position where the winding shaft separates from the fixed side taper segment 2 and further contracts. There is a gap between 1 and 1. Further, when the winding shaft retracts, the object to be wound 17 cannot move further in the direction of the winding shaft from the position where it hits the stopper 12, and the winding shaft can be pulled out from the object to be wound 17. The remaining material to be wound 17 is received by the receiving table 13 below and is delivered by a separately provided delivery device or the like. Further, the present apparatus returns to the original position again by returning the carriage 10 to the retracted position.

The above embodiment can be operated by an automatic sequence using a programmable sequencer or the like. The present device can also be used as a winding device using a core tube as an alternative to the winding device shown in FIG.

As an example, when a winding shaft having a diameter of 53 mm as in the present invention is used for winding a metal foil having a width of 120 mm and a metal corrugated sheet, the formed cylinder having the innermost one circumference has a predetermined size. The accuracy is secured, and for the tension of metal foil winding of 5 kg,
When the rubber tube is wound at a compressed air pressure of 5 kg / cm ² , there is no slippage between the expansion / contraction segment during winding and the inner surface of the metal foil that is the material to be wound, and the metal foil and metal corrugated sheet during winding There were no wrinkles, slack, bends, deviations, or meanders. Further, even when the material is taken out, the material to be wound can be smoothly taken out without being caught on the winding shaft or being displaced like a bamboo shoot.

[0018]

EFFECT OF THE INVENTION By using the winding device of the present invention, it is possible to wind a metal foil or the like corelessly with extremely high precision, and to secure a stable quality (shape) of the material to be wound. . In addition, since the rubber tube is used as the minimum necessary actuator for expanding and contracting the winding shaft, the winding structure can be easily automated.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an outline of a mechanism of a winding device of the present invention.

FIG. 2 is an explanatory view showing the expansion / contraction state of the winding shaft of the present invention.

FIG. 3 is a schematic diagram of a mechanism of a winding device of a system that uses a conventional flexible material such as resin for a winding shaft.

FIG. 4 is a mechanism schematic explanatory view of a winding device of a system using a columnar shaft divided into two parts according to a conventional technique.

[Explanation of symbols]

 1 Expansion / contraction segment 2 Fixed-side taper segment 3 Sleeve 4 Rubber tube 5 Rotary joint 6 Air piping system 7 Ring spring 8 Electric motor 9 Rails 10 Cart 11 Air cylinder 12 Stopper 13 Cradle 14 Support mechanism 15 Valve 16 Timing belt 17 Rolled material 18 Fixed side taper segment concave part 19 Expansion / contraction segment taper part 20 Fixed side taper segnt taper part 21 Fixed side taper segment parallel part 22 Expansion / contraction segment tip parallel part 23 Sleeve parallel part 24 Sleeve taper part 25 Winding shaft tip convex part

Claims (1)

[Claims] 1. A winding apparatus that the winding shaft of the belt can be freely scaled radially to the winding thereof
Take-up from the retracted position of the take-up shaft when taking it out from the take-up shaft
A winding shaft decreasing mechanism by displacement control using the tapered segment, etc. to a predetermined reference cylinder position when the reference cylinder
A winding device for a band-shaped body, which has a two-stage expansion / contraction mechanism of a winding shaft expansion / contraction mechanism by force control using a fluid expansion / contraction tube or the like that generates a gripping force from a state .