JPS6021416Y2 - Winding device in loom - Google Patents

Description

[Detailed description of the invention] This invention has a cross roller for winding up a woven fabric placed and supported on a pair of take-up rollers, and the cross roller is wound and rotated by the rotation of the take-up roller. The present invention relates to a fabric winding device for a loom configured to

Various devices are known as this type of fabric winding device.

For example, in the device disclosed in Japanese Patent Application Laid-Open No. 55-80547, a pair of take-up rollers are rotated from a surface roller via a chain, while a cross roller is rotated in frictional contact with the pair of take-up rollers.

The woven fabric sent from the surface roller via a plurality of guide rollers is fed between a pair of take-up rollers and an a-roller, and is wound around a cross roller to sequentially increase the size of the woven fabric layer.

As the fabric layer on the cross roller becomes larger, the shaft of the cross roller slides along the guide member in a direction away from the pair of take-up rollers.

However, this winding device has the following drawbacks.

In other words, the outer shape of the woven fabric layer wound around the cross rollers by this winding device tends to be bulged in the center as shown in FIG.

This is caused by the winding tension of the woven fabric increasing as the woven fabric layer becomes larger, and the width of the woven fabric shrinking.

The increase in the winding tension of the woven fabric is based on the fact that the frictional force between the take-up roller and the woven fabric on the cross roller increases as the winding progresses.

In other words, when the woven fabric layer wound around the cross rollers is small, it is light and the frictional force of the woven fabric layer against the take-up roller is small. is wound up.

On the other hand, as winding progresses and the woven fabric layer wound around the cross roller becomes larger, the cross roller becomes heavier and the frictional force between the woven fabric layer and the take-up roller increases, reducing slippage between the woven fabric layer and the take-up roller. .

This means that the winding speed of the fabric to the cross roller gradually increases from the beginning of winding, while the speed of feeding the fabric from the surface roller is constant, so the winding tension of the fabric gradually increases from the beginning of winding. As a result, the width of the woven fabric will shrink.

If the width of the woven fabric decreases as the winding progresses, the width of the wound woven fabric will become narrower than the specified woven width. This may cause serious drawbacks such as wrinkles in the woven fabric and a significant deterioration in the quality of the woven fabric.

An object of the present invention is to provide a woven fabric winding device that has a simple mechanism and can perform high-quality winding by eliminating the drawbacks associated with the known woven fabric winding devices. .

The object of the invention is distantly related to the mechanism linked to the rotation of the loom, for example by providing a friction coupling means in the drive mechanism of said winding roller which is driven from the surface roller.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 3, the woven fabric C is sent out at a constant speed in contact with the surface roller 1, and is fed out at a constant speed by the guide roller 6.
7.8 and then supplied to the winding device.

The winding device is composed of a pair of winding rollers 9 and 10 and a driving device thereof, and the cross roller 20a is connected to the winding roller 9.
, 10, and rotates through contact friction with the take-up rollers 9, 10.

The woven fabric is supplied between the take-up rollers 9 and 10 and the cross roller 20a, and is wound around the cross roller 20a.

As the winding progresses, the outer diameter of the woven fabric layer wound around the cross rollers increases, for example, to the size indicated by 20b in FIG. 3.

The drive of the take-up roller in this embodiment of the invention is carried out via friction coupling means 32 fixed to the shaft 3 of the surface roller 1, as shown in FIG.

That is, the rotation of the chain wheel 22 of the friction coupling means 32 driven by the rotation of the surface roller 1 is transmitted to the lower chain wheel 23 via the chain 24.

A drive gear 25 is provided coaxially with the lower chain wheel 23 , and the drive gear 25 engages with a driven gear 26 provided at the end of the shaft 11 of the take-up roller 9 .

Therefore, the take-up roller 9 rotates in conjunction with the rotation of the chain wheel 22 of the friction coupling means 32.

The shaft 12 of the other winding roller 10 and the shaft 1 of the winding roller 9
The winding rollers 9 and 10 are connected by a chain (not shown) different from the winding rollers 9 and 1, so that the winding rollers 9 and 10 rotate simultaneously in the same direction.

Note that the take-up roller 10 does not necessarily need to rotate actively, and may be provided in an idling state.

The friction coupling means 32 has a flange 3o that is fitted into the end of the shaft 3 of the surface roller 1 and fixed with a key 31, as shown in FIG.

An annular chain wheel 22 is loosely fitted into an external boss portion provided near the outer periphery of the flange 30.

On the other hand, an annular pressing plate 33 is loosely fitted into an inner boss portion provided near the axis of the flange 30.

Brake discs 32a and 32b are provided between the flange 30 and the opposing end surfaces of the chain wheel 22 and between the opposing end surfaces of the chain wheel 22 and the pressing plate 33.
are inserted respectively.

In order to press and fix the pressing plate 33 toward the flange 30, a plurality of tightening bolts 35 fitted with compression springs 34 are attached to the end face of the flange.

Therefore, in the friction joint means of the present invention, the flange 3
0 and the pressing plate 33 that rotates together with the flange as the main rotating part, and the chain wheel 22 that makes frictional contact with the end surfaces of the flange 30 and the pressing plate 33 via the brake discs 32a and 32b as the driven part of the rotation, and the friction of the rotational driving force. Transmission takes place.

The brake discs 32a, 32b are made of asbestos, for example, and usually have a flange 30 that is the main rotating part.
and the end surface of the pressing plate 33.

However, if the rotational driving force can be transmitted through frictional contact between the opposing end surfaces of the driving part and the driven part, the object of the present invention can be achieved even without inserting the brake disc.

For implementing the invention, it is not necessary to limit the shape of the friction coupling means to the shape of the embodiment.

In other words, the object of the present invention can be distantly achieved by providing two opposing rotating disks on the same axis, one as a driving part and the other as a driven part, so that the two discs are in frictional contact.

Furthermore, the object of the present invention can be distantly achieved by using a friction joint means other than the friction joint means using the opposing rotating discs, for example, a friction joint means driving friction between two orthogonal axes.

Next, the operation of the woven fabric winding device of the present invention will be explained.

In the friction joint means 32 of the woven fabric winding device of the present invention, the flange 30 is fixed to the shaft 3 of the surface roller 1 with a key 31, so that the flange 30 is attached to the flange 30 with a plurality of tightening bolts 35. The pressing plate 33 rotates in synchronization with the surface roller.

On the other hand, since chain wheel 22 and take-up roller 9 are connected by chain 24 and drive gears 25 and 26, rotation of chain wheel 22 is transmitted to take-up roller 9 in synchronization.

The transmission of rotation between the chain wheel 22, the flange 30, and the pressing plate 33 is performed by frictional contact as described above. The rotation lags behind the rotation of the flange 30 and the pressing plate 33, which are the main moving parts.

For example, the number of woven fabric layers wound around the cross roller 20a is small;
That is, when the own weight is small, the load applied to the take-up rollers 9 and 10 is small, and therefore the load applied to the chain wheel 22 via the chain 24 is low.

To this end, the chain wheel 22 rotates substantially synchronously with the flange 30, ie substantially synchronously with the surface roller 1.

Next, as the fabric layer wound around the cross roller 20a becomes larger, for example as shown in 20b shown in FIGS. 3 and 4, the weight of the cross roller 20a together with the fabric layer gradually increases.

As a result, the load applied to the take-up rollers 9, 10 gradually increases, and the load on the rotation of the take-up rollers 9, 10 increases, which causes an increase in the load on the chain wheel 22.

Therefore, the rotation of the chain wheel 22 of the driven part to which the rotation of the main part, that is, the flange 30 and the pressing plate 33 is transmitted by frictional contact, is transmitted to the chain wheel 22.
As the load increases, the rotation of the main moving part begins to lag approximately in proportion to the increase in the load.

This means that as the number of fabric layers wound around the cross roller 20a increases, the rotational speed of the winding rollers 9, 10 gradually decreases.

On the other hand, a cross roller 2 is placed on a pair of take-up rollers 9 and 10.
In the type of winding device in which 0a is mounted, the cross roller 20
As the amount of woven fabric a increases, the frictional force between the woven fabric on the cross roller 20a and the winding rollers 9 and 10 increases, so the winding speed of the woven fabric by the winding roller tends to increase. .

In a winding device in which a cross roller is placed on a pair of winding rollers, such as the cloth winding device of the present invention, if a friction coupling means is provided in the drive mechanism of the winding roller, the cross roller 20a As the amount of woven fabric increases, the increase in the speed at which the take-up roller takes up the fabric offsets the decrease in the rotational speed of the take-up roller due to the friction coupling means.

As a result, it is possible to suppress an increase in the winding tension of the woven fabric to the cross roller 20a, that is, the winding tension can be kept substantially constant at all times, and as a result, the width of the woven fabric does not shrink and the The woven fabric layer wound around the roller 20a has a shape in which both end surfaces are substantially parallel, as shown in FIG.

The frictional force between the driving part and the driven part of the friction coupling means depends on the contact pressure of the driven part with respect to the driving part.

Therefore, if a means for adjusting the contact force is provided to obtain the optimum contact force for fabrics with different raw yarns and textures, width shrinkage of the fabric on the cross rollers will occur for various fabrics. can be prevented.

In the embodiment, the contact force is adjusted remotely by turning a tightening bolt fitted with a compression spring.

Note that the friction coupling means is not only provided on the surface roller shaft side as in the above embodiment, but also on the lower chain roller 2.
It may be provided on the third side.

The present invention is distantly related by providing a friction joint means in the drive mechanism of the winding roller, which is driven from a mechanism linked to the rotation of the loom, so that winding can be carried out with substantially constant winding tension at all times. As a result, the width of the woven fabric on the cross rollers is prevented from shrinking, and the woven fabric can be wound to a specified width.

Further, there is no occurrence of wrinkles in the woven fabric, and therefore no deterioration in the quality of the woven fabric in the winding device occurs.

Furthermore, since the device of the present invention has a simple structure, it can be manufactured at low cost, and the device of the present invention can be installed not only on a new loom but also by modifying an existing stand.

[Brief explanation of the drawing]

FIG. 1 is a front view of a woven fabric layer wound around a cross roller using a conventionally known winding device, and FIG. 2 is a front view of a woven fabric layer wound around a cross roller using a winding device of the present invention. Fig. 3 is a side view showing the feeding state of woven fabric by the winding device of the present invention, Fig. 4 is a side view showing the driving state of the winding device of the present invention, and Fig. 5 is a side view of the winding device of the present invention. FIG. 3 is a partially sectional front view showing the friction coupling means. 1...Surface roller, 3...Surface roller shaft, 9, 10...Curved winding roller, 14,
15...Guide member, 20a...Curved cross roller, 2゜b...Woven fabric layer wound around the cross roller, 22...Chain wheel, 23...・・・
...Lower chain roller, 24...Chain,
25... Curved drive gear 26... Driven gear, 30... Flange, 31... Key,
32...Friction joint means, 32a, 32b...
... Brake disc, 33... Curved pressing plate, 34...
...Compression spring, 35...Tightening bolt.

Claims (1)

[Claims for Utility Model Registration] 1. A cross roller for winding a woven fabric sent out from a surface roller is placed on a pair of winding rollers, and at least one of the waist winding rollers is connected to a drive mechanism to actively In a winding device of a loom that rotates and sequentially winds the cloth onto the cross roller by rotating the cross roller through frictional contact with the winding roller; A take-up device for a loom, characterized in that a take-up roller is connected to a driven part of a friction joint means. 2. The friction coupling means includes a main moving part that is a disc-shaped member driven from the shaft of a surface roller, a driven part that is a disc-shaped member disposed coaxially with the main moving part, and an end surface of the disc-shaped member of the main driving part. Utility model registration claim 1, which comprises pressing means provided so as to bring the end face of the disc-shaped member of the driven part facing the end face into frictional contact, and connecting means for rotationally connecting the driven part and the take-up roller. A winding device for a loom as described in Section 1. 3. The disc-shaped member of the main moving part is a flange-shaped member attached to the end of the shaft of the surface roller, and the disc-shaped member of the driven part is an annular member loosely fitted to the boss part of the flange-shaped member. , the pressing means is an annular member attached to the main moving part so as to press the driven part against the main moving part, make frictional contact with the driven part, and rotate in synchronization with the main moving part; A winding device for a loom according to claim 2, wherein the connecting means for rotationally connecting the rollers is a chain. 4. The winding device for a loom according to claim 2, wherein the pressing means is provided with means for adjusting the frictional contact force between the main moving part and the driven part.