JPH0519345Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a device for preventing dust from adhering to a shedding spring in a jacquard loom.

[Conventional technology]

Conventionally, as shown in FIG.
In order to prevent cotton powder from adhering to the spring cover 5, purified air is blown into the spring cover 5 from both sides to prevent cotton powder from entering from the upper end of the spring cover 5.

[The problem that the idea attempts to solve]

In recent looms, the width of the loom has become wider (some are over 3 m), and the conventional method described above, in which purified air is blown from both sides of the spring cover 5, is not able to uniformly distribute purified air across the entire width. It is becoming impossible to prevent cotton powder from entering.

Therefore, conventionally, as shown in FIG. 4, a blower box 11 is installed at the bottom of the spring cover, and a perforated plate 12 is provided on the upper surface of the blower box 11, so that air is blown out from each plate hole 12a. A method has been proposed (see Japanese Unexamined Patent Publication No. 71435/1983).

However, in the proposed method, the air sent into the blower box 11 is curved in the feeding direction and blown out from each plate hole 12a. In particular, the air near the entrance is blown downward in a circular manner at the tip, which causes turbulence in the air, which causes vibrations in the opening spring, which has a negative effect on weaving.

The present invention was proposed in view of the above-mentioned conventional problems, and its purpose is to uniformly raise purified air across the entire width while preventing turbulence in the air flow, and to remove powder from cotton. It is an object of the present invention to provide a device for preventing the adhesion of powder to an opening spring in a jacquard loom, which can prevent intrusion.

[Means to solve the problem]

In order to achieve the above object, the present invention uses a spring base to attach a spring cover to both sides of a shedding spring, and a spring cover that extends across the entire width of the loom at the bottom of the opening of the spring base that extends across the entire width of the loom. In a jacquard loom installed with a blower pipe connected to a purified air supply source, a plurality of blower pipes are branched downward at appropriate intervals in the width direction of the loom. Further, a uniform flow forming chamber is provided around the blower pipe to reverse the airflow blown from each of the blower pipes upward to form a uniform upward flow.

[Effect]

Since the present invention has the above-mentioned configuration, when purified air is supplied from one end of the blower pipe, it is supplied from each blower pipe installed downward at appropriate intervals over the entire length of the loom in the width direction of the loom. After branching out almost uniformly, it reverses upward in the uniform flow formation chamber, thereby eliminating the turbulent flow and rectifying the flow.
A uniform and undisturbed upward air flow is formed over the entire length of the loom in the width direction and rises inside the spring cover. Thereby, the airflow does not vibrate the shedding spring, and the desired purpose can be achieved without adversely affecting weaving.

〔Example〕

FIG. 1 is a side view of the vicinity of the warp opening of a jacquard loom equipped with the device of the present invention, and FIG. 2 is a partially cutaway front view thereof.

As shown in FIGS. 1 and 2, in the present invention, a blower pipe 2 is installed at the lower part of an opening 1a of a spring base 1 extending over the entire length in the width direction of the loom. A plurality of blow-off pipes 3 are installed at appropriate intervals in the loom width direction of the blow-off pipe 2 in a direction substantially perpendicular to the blow-off pipe 2 and are branched downward.

Although the blow pipe 2 is omitted in the drawing, one end thereof is connected to a purified air supply source (such as a blower).

A uniform flow forming chamber 2a is provided to cover the periphery of the blast pipe 2 and reverse the air flow upward to form a uniform upward flow. The uniform flow forming chamber 2a is formed by extending the spring covers 5, 5 on both sides downward and attaching the bottom plate material 2b between the lower ends of these extensions. 5, 5, another side plate material may be constructed integrally with the bottom plate material 2b and attached to the spring base 1.

In addition, in FIGS. 1 and 2, 4 is an opening spring, 5 is a spring cover, 6 is a spring hanging pin, 7 is a warp thread, 8 is a thread thread, 9 is a heald, 1
0 indicates a reed, and since the structure and operation thereof are the same as those of a known jacquard loom, a description thereof will be omitted.

The device of the present invention has the above configuration, and its operation will be explained next.

When purified air was supplied from one end of the blower pipe 2, it branched out almost uniformly over the entire width of the loom from each of the blower pipes 3, which were installed downward at appropriate intervals over the entire width of the loom. Thereafter, the purified air is reversed upward in the uniform flow forming chamber 2a to form a uniform flow and rise within the spring covers 5,5. This further promotes uniformity of the upward flow of purified air over the entire length in the width direction of the loom.

In this way, the purified air can be raised almost uniformly from the bottom to the top inside the spring covers 5, 5 over the entire length in the width direction of the loom, so that the opening mechanism of the jacquard loom can be used in a manner according to a predetermined pattern. Warp threads 7 applied to heald 9 via thread threads 8
It is possible to prevent powdered cotton generated during the opening movement of the spring covers 5 from falling and entering through the upper end openings of the spring covers 5, 5.

The present invention is applicable to both metal and rubber opening springs.

[Effect of idea]

According to the present invention, it is possible to uniformly raise purified air within the spring cover that covers both sides of the shedding spring over the entire width of the loom while eliminating turbulence in the airflow, thereby preventing the intrusion of powdered cotton. I can,
It has the advantage of not having any adverse effects on weaving, and can be applied to recent wide-width looms with excellent effects.

[Brief explanation of drawings]

Fig. 1 is a side view of the vicinity of the warp opening of a jacquard loom equipped with the device of the present invention, Fig. 2 is a partially cutaway front view thereof, Fig. 3 is a side view of the main part of the conventional device, and Fig. 4 is: FIG. 7 is a longitudinal sectional front view showing the behavior of airflow in a main part of yet another conventional example. 1... Spring base, 2... Air pipe, 3...
...Blowout pipe, 4...Opening spring, 5...
Spring cover, 6...Spring hanging pin, 7
...Warp, 8...Threading, 9...Held, 10...
Reed.

Claims (1)

[Claims for Utility Model Registration] Spring covers are attached to both sides of the shedding spring using a spring base, and purified air is supplied to the lower part of the opening of the spring base that extends across the entire width of the loom. In a device for preventing the adhesion of powder to the opening spring of a jacquard loom in which a blower pipe connected to a supply source is installed, a plurality of blower pipes are branched downward at appropriate intervals in the width direction of the loom of the blower pipe, and , for opening in a jacquard loom, characterized in that a uniform flow forming chamber is provided around the blowing pipe to reverse the airflow blown from each of the blowing pipes upward to form a uniform upward flow. Spring dust adhesion prevention device.