JPS629344Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a circular loom for weaving cylindrical textiles, and particularly to a mechanism for supporting its shuttle.

In a circular loom, the shuttle runs along a circular shuttle guide rail. Therefore,
It is necessary to support the centrifugal force as well as the gravity of the shuttle.

This invention provides a shuttle support mechanism for this type of circular loom that can suitably support the gravity and centrifugal force of the shuttle with a simple configuration.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

In the figure, a shuttle 1 runs along a circular shuttle guide rail. In this embodiment, a pair of circular upper and lower outer guide rails 2, 3 and a circular upper and lower pair of inner guide rails 4, 5 are arranged concentrically, and between these guide rails 2, 3, 4, 5. Four shuttles 1 are arranged. Each shuttle 1 runs along shuttle guide rails 2, 3, 4, 5 at equal intervals from each other.

The shuttle 1 has support rollers 6, 7, and 8 rotatably attached to both upper and lower sides of its outer end and to the center of its inner end. The upper support roller 6 of the outer end is engaged with the lower surface of the outer upper guide rail 2, and the lower support roller 7 is engaged with the upper surface of the lower guide rail 3. Further, the axis 6a of the upper support roller 6 is arranged in the radial direction, and is inclined outwardly and downwardly at a certain angle with respect to the horizontal plane. The axis 7a of the lower support roller 7 is arranged in the radial direction and is inclined outwardly and upwardly at a certain angle with respect to the cedar plane. Further, as shown in FIG. 2, the lower surface of the guide rail 2 with which the upper support roller 6 engages is inclined parallel to the axis 6a of the support roller 6, and the lower surface of the guide rail 2 with which the lower support roller 7 engages. The upper surface of the guide rail 3 is inclined parallel to the axis 7a of the support roller 7. The support roller 8 at the inner end of the shuttle 1 has an axis 8a arranged in the vertical direction, and is inserted between and engaged with the pair of inner guide rails 4 and 5.

A large number of warp guide rods 9 are arranged between the pair of upper and lower outer guide rails 2 and 3. Moreover, a large number of healds 10 are arranged on the outside thereof.

In the circular loom configured as described above, when weaving a cylindrical fabric, a large number of warp threads A are passed through each warp thread guide rod 9 via each heddle 10, and the inner shuttle guide rail 4 , 5, and the shuttle 1 runs. 10 healds each
In this case, the warp yarns A are sequentially and alternately opened on both the upper and lower sides of each shuttle 1. As a result, the weft yarns pulled out from each shuttle 1 and each warp yarn A are interwoven, and a cylindrical woven fabric B is woven.

Each support roller 6, 7, 8 of the shuttle 1 is connected to each guide rail 2, 8 as the shuttle runs.
It rolls on the engagement surfaces 3, 4, and 5. Therefore, only so-called rolling friction occurs between the shuttle 1 and each guide rail 2, 3, 4, 5.
The shuttle 1 runs smoothly without being subjected to large resistance.

When the shuttle 1 runs, centrifugal force is generated. The gravity and centrifugal force of the shuttle 1 are mainly supported by the support roller 7 below the outer end. The axis 7a of the support roller 7 is inclined outwardly and upward at a certain angle, and the upper surface of the guide rail 3 is inclined parallel to the axis 7a. can be supported,
It can roll smoothly on the guide rail 3 without any trouble. Part of the gravity of the shuttle 1 is shared by the support roller 8 at the inner end, and part of the centrifugal force is shared by the support roller 6 above the outer end, but the largest load is applied to the support roller 6 below the outer end. is added.

Further, the warp threads A opened on both the upper and lower sides of the shuttle 1 are guided between each of the support rollers 6, 7, 8 and each of the guide rails 2, 3, 4, 5, and are guided between each of the support rollers 6, 7, 8 and each of the guide rails 2, 3, 4, 5. 8 rolls. Therefore, the warp threads A will not be damaged by being rubbed against the shuttle 1.

It should be noted that various modifications of this invention can be considered in addition to the above-mentioned embodiments. Since the gravity and centrifugal force of the shuttle 1 are mainly supported by the support roller 7 below the outer end, that is, the support roller whose axis is inclined outward and upward at a certain angle, the other support rollers 6,
8 is not necessarily necessary. Since only a small load is applied to the support rollers 6, 8, it is possible to form them into sliders and slide them along the guide rails 2 and 4, 5 without any problem.

In addition to inclining the axis 7a of the support roller 7 outward and upward at a certain angle with respect to the horizontal plane, it is also necessary to incline the upper surface of the shuttle guide rail 3. When the support roller 7 is engaged with the upper surface of the guide rail 3 while only the axis 7a of the support roller 7 is inclined and the upper surface of the guide rail 3 is arranged parallel to the horizontal plane, the outer circumferential surface of the support roller 7 is aligned with the center. 7c, but one shoulder, i.e. inner shoulder 7
It contacts the upper surface of the guide rail 3 at point E. Therefore, the support roller 7 is largely distorted in the lateral direction due to the gravity of the shuttle 1, and the support roller 7 cannot be rolled smoothly when the shuttle 1 is running. For this reason, the resistance to traveling of the shuttle 1 increases. There is also the problem that a large internal stress is generated in the support roller 7, causing damage. In addition, in this case, only the top surface of the guide rail 3
Even if the gravity of the shuttle 1 can be supported, its centrifugal force cannot be supported. It is unavoidable that the support roller 7 is pushed outward by the centrifugal force of the shuttle 1, and that the outer shoulder 7E' on the outer peripheral surface of the support roller 7 collides with the guide rod 9.
As a result, the outer shoulder 7E' is worn and damaged by the guide rod 9. Outer shoulder 7E' and guide rod 9
There is also the problem that noise is generated due to the collision between the two. The resistance to the movement of the shuttle 1 becomes even greater.

As mentioned above, this idea is to align not only the axis 7a of the support roller 7 but also the upper surface of the guide rail 3 substantially parallel to the axis 7a of the support roller 7, that is, upward at a certain angle outward with respect to the horizontal plane. Since it is inclined, the outer circumferential surface of the support roller 7 can be brought into contact with the upper surface of the guide rail 3 at its center 7c. Therefore, the support rollers 7 can be rolled smoothly when the shuttle 1 is running, the resistance to the running of the shuttle 1 can be reduced, and the support rollers 7 can be prevented from being damaged. Moreover, the gravity and centrifugal force of the shuttle 1 can be supported only by the upper surface of the guide rail 3, and collision between the outer shoulder 7E' of the support roller 7 and the guide rod 9 can be avoided, causing noise generation and the outer shoulder. 7
Wear of E' can be avoided.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram showing an embodiment of this invention, Figure 2
The figure is an enlarged view of the support roller of the shuttle of FIG. 1. 1...Shuttle, 3...Guide rail, 7...
...Support roller.

Claims (1)

[Scope of utility model registration request] In a circular loom in which a shuttle runs along a shuttle guide rail having a circular shape, a support roller rotatably attached to the shuttle is engaged with the upper surface of the shuttle guide rail, and the axis of the support roller is radiated. The shuttle guide rail is arranged in a direction and inclined upward at a certain angle outward with respect to a horizontal plane, and the upper surface of the shuttle guide rail is inclined substantially parallel to the axis of the support roller, so that the gravity of the shuttle applied to the support roller A shuttle support mechanism characterized in that centrifugal force is supported by the upper surface of the shuttle guide rail.