JPS6111240Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sliver convergence and supply device in a spinning machine for converging a group of slivers supplied from a sliver supply device and sending them to a draft device.

As shown in FIG. 4, a conventional sliver convergence supply device is composed of a pair of lifter rollers 10a and 10b arranged vertically and oppositely to each other, and the axial center position of the lower driving lifter roller 10a is is stationary, but the driven upper lifter roller 10b may move freely in the vertical direction, and after the sliver group supplied from the sliver supply device is focused by a focusing guide, it is moved to a set of lifter rollers 10a. , 10b and is pressed onto the lower lifter roller 10a by the weight of the upper lifter roller 10b, which is movable in the vertical direction, and the lower lifter roller 10a is driven to draft the sliver group S. While being sent out to the apparatus side, the upper lifter roller 10b is rotated by the frictional force with the passing sliver group S. In this way, the sliver group S passing between the pair of lifter rollers 10a and 10b
is strongly pressed by the weight of the upper lifter roller 10b, and the upper lifter roller 10b is rotated by the frictional force with the passing sliver group S, so the sliver group S is a set of lifter rollers. When passing between 10a and 10b, the fibers are strongly pressed and rubbed at the same time, disrupting the parallelism of the fibers and causing unevenness.

In addition, as shown in FIG. 5, another conventional sliver convergence and supply device is one in which the lower lifter roller 10a is removed from the device, and the frictional force with the outer circumferential surface of the rotating lifter roller 10b is reduced. The sliver group S is sent out to the draft device side. According to this device, the sliver group S passing through is not strongly pressed or rubbed as in the above device, but the sliver group S is sent out only by the frictional force with the lifter roller 10b. Moreover, since the outer circumferential surface of the lifter roller 10b is coated with chrome plating or the like and has a small coefficient of friction, the lifter roller 10b
The frictional force between the outer peripheral surface of 0b and the sliver group S is small. As a result, the sliver group S cannot be reliably sent to the drafting device, and the weak parts of the sliver joints may fall out due to tension draft, and the fibers may be parallel to each other as in combed sliver. A sliver with a good tensile strength cannot have a strong tension draft, so there is less entanglement between the fibers, and the sliver stretches and sag due to its own weight, making it impossible to send it smoothly to the drafting device. There were drawbacks such as non-uniform supply to the equipment.

In view of the above-mentioned drawbacks, the purpose of the present invention is to spin high-quality sliver by reliably and smoothly feeding the sliver group to the drafting device without disturbing the parallelism of the fibers and causing unevenness. The gist of the structure is that the outer diameter of at least one of the lifter rollers in a set of lifter rollers is compared with the outer diameter of both ends, and the distance between the lifter rollers of the set is determined. The lifter roller is made small enough to appropriately press the sliver group passing through the lifter roller, and the outer diameter of the central portion of the lifter roller is made equal over the entire length.

Hereinafter, the present invention will be explained in detail with reference to examples.

FIG. 1 shows the roller group of the drawing machine, and the creel roller 1 that constitutes the sliver supply device A is shown in FIG.
A focusing guide 2 for focusing the sliver group S is provided between the sliver and the drafting device B. A pair of lifter rollers 3a and 3b are vertically opposed to each other to assist in focusing the sliver group S and to actively send the sliver group S to the downstream drafting device B side, on the downstream side of the focusing guide 2. It is set in.

The outer diameter of the lower lifter roller 3a is the same over the entire length, and this lower lifter roller 3a
is configured to be driven via a transmission means such as a gear so as to be interlocked with other devices such as the draft device B. On the other hand, the upper lifter roller 3b is
As shown in FIGS. 2 and 3, the sliver group S passing between a pair of lifter rollers 3a and 3b is pressed appropriately when the outer diameter d of the central portion is compared with the outer diameter D of both ends. The outer diameter d of the central portion is the same over the entire length. Therefore, the difference in outer diameter between the center and both ends of the upper lifter roller 3b is determined relative to the thickness of the sliver group to be supplied.

The central part and both ends of the upper lifter roller 3b having different diameters may be integrally molded, but if a distance collar is used at both ends so that they can be freely removed, it is possible to remove the sliver to be supplied. By attaching distance collars with different outer diameters depending on the thickness of the sliver, it is possible to freely handle the thickness of the sliver to be supplied. This distance collar may be made of a non-metallic material such as rubber or nylon. If it is made of rubber, the coefficient of friction will be large and
The rotation of b is ensured, and if it is made of nylon, the manufacturing cost will be low. The upper lifter roller 3b is driven by the lower lifter roller 3b.
The frictional force between the lower lifter roller 3a and the lower lifter roller 3a may be used, or the lower lifter roller 3a may be actively driven via a transmission means such as a gear.

In the above embodiment, the upper lifter roller 3b
Although the outer diameter of the central portion of the roller is slightly smaller than the outer diameter of both ends, only the lower lifter roller 3a may have such a structure, and both lifter rollers 3a and 3b may also have such a structure. You can also do this.

Then, the sliver group S supplied from the sliver supply device A is focused by the focusing guide 2,
Then, it enters between a pair of lifter rollers 3a and 3b.

Here, the gap provided in the center of the pair of lifter rollers 3a, 3b is determined so that the sliver group S passing through is appropriately pressed, so that the sliver group S that is appropriately pressed is Due to the restoring force, the sliver group S and each lifter roller 3a,
A frictional force is generated between the sliver group S and the outer circumferential surface of the sliver 3b, and due to this frictional force, the sliver group S is smoothly sent out to the draft device B side without disturbing the parallelism.

As described above, according to the present invention, the sliver group passing between a pair of lifter rollers is not pressed so strongly that the fibers come into close contact with each other, and the sliver group is pushed by the frictional force with the outer peripheral surface of each lifter roller. Since the sliver is pressed to the extent that it is delivered, the sliver group can be reliably and smoothly delivered to the drafting device without disturbing the parallelism of the fibers and causing unevenness.

The outer diameter of the central part of at least one lifter roller of a set of lifter rollers is compared with the outer diameter of both ends, and the sliver group passing between the set of lifter rollers is appropriately pressed. By adjusting the difference in outer diameter between the center and both ends of a pair of lifter rollers, it is possible to create a difference in the circumferential speed (surface speed) of the upper and lower lifter rollers. Therefore, the portion of one or both of the lifter rollers that comes into contact with the sliver group is constantly rubbed by the sliver group, so dirt does not adhere to the roller and there is no need to clean the roller surface at all. In this regard, in the conventional device, since the circumferential speed of the lifter roller and the advancing speed of the sliver group are equal, the dirt that adheres to the lifter roller gradually accumulates, and the fibers adhere or get caught on this dirt, and furthermore, There were problems such as the sliver being wrapped around, causing the fibers to separate, and the separated fibers getting mixed into the sliver, resulting in thread breakage, or the occurrence of mottled threads or knotted threads. According to the above-mentioned method, this problem is solved and a high quality sliver can be obtained, which is an excellent effect.

[Brief explanation of the drawing]

Fig. 1 shows the roller group of a drawing machine implementing the present invention, and Fig. 2 shows the upper lifter roller 3b.
Figure 3 is an enlarged view of the main parts of Figure 1.
FIG. 4 and FIG. 5 are explanatory diagrams of the prior art. Explanation of symbols of main parts, A... Sliver supply device, B... Draft device, S... Sliver group, 1... Creel roller, 2... Focusing guide,
3a, 3b...lifter rollers.

Claims (1)

[Claims for Utility Model Registration] (1) A focusing guide for focusing a group of slivers is provided between a sliver supply device and a drafting device, and the group of slivers focused on the downstream side of the focusing guide is transferred to the drafting device. In a sliver convergence and supply device for a spinning machine configured to include a set of lifter rollers for delivering sliver to a sliver, the outer diameter of the central portion of at least one lifter roller of the set of lifter rollers is equal to the outer diameter of the center portion of the sliver The outer diameter of the lifter rollers is small enough to appropriately press the sliver group passing between the set of lifter rollers, and the outer diameter of the center of the lifter rollers is equal over the entire length. A sliver focusing and feeding device for a spinning machine, characterized in that: (2) Registration of a utility model characterized in that the center and both ends of a lifter roller have different outer diameters, and the center and both ends are constructed separately, and both ends are removable from the center. A sliver focusing and feeding device for a spinning machine according to claim 1.