JP2527534Y2 - Solenoid device for loom - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid device used for controlling the feeding and stopping of a weft yarn from a weft yarn feeding device in an automatic loom, and more particularly, to a solenoid device using fly cotton (cotton dust) or other foreign matter. The present invention relates to a solenoid device for a loom which has been improved so as to prevent malfunction or wear.

[0002]

2. Description of the Related Art A conventional solenoid device for a loom of this type is disclosed in Japanese Utility Model Application Laid-Open No. 3-59612 filed by the present applicant.
What is disclosed in the patent is known. The structure and operation of the conventional device will be described with reference to FIGS. 1 and 2 according to one embodiment of the present invention.

In the solenoid 1, a core 5 is fitted on the upper end side of a center hole 4 of a coil bobbin 3 around which a coil 2 is wound, and a plunger 6 is fitted on a lower end side so as to be slidable. An abutment flange 7 is formed on the outer circumference in the middle, a stop pin 8 having a reduced diameter is formed at the tip, and a compression coil spring 9 for urging the plunger 6 downward between the plunger 6 and the core 5. Is installed. A housing hole 12 is formed in the upper surface of the body 11 for mounting the solenoid, and a small-diameter insertion hole 13 reaching the lower surface of the body 11 is connected to the bottom surface of the housing hole 12, and a bearing 14 is fitted therein. The solenoid 1 is mounted downward on the upper surface of the body 11, and the distal end side of the plunger 6 is slidably fitted in the bearing 14.

Accordingly, when the solenoid 1 is excited,
The stop pin 8 is sucked by the plunger 6 toward the core 5 until the abutment flange 7 hits the upper stopper 15 provided on the upper surface side of the accommodation hole 12 against the elasticity of the compression coil spring 9.
Retreats into the insertion hole 13, on the other hand, when it is de-energized, the plunger 6 moves down by the restoring elasticity of the compression coil spring 9, and the butting flange 7 hits the lower stopper 16 provided on the bottom surface of the receiving hole 12. As a result, the stop pin 8 projects from the lower surface of the body 1 by a predetermined dimension.

[0005] In the weft supply section, as shown in FIG.
Is fixed in the horizontal direction, and is pulled out from the outer periphery of the bobbin 21 by pulling the weft yarn a from the right side in FIG. A sliding contact body 23 having a smooth curved upper surface and a through hole 24 is attached to
Above it, the above-mentioned solenoid device is mounted on the body 1
The lower surface of the solenoid 1 is fixed by a bracket 25 with a slight gap between the upper surface of the sliding member 23 and the solenoid 1.
When the stop pin 8 retreats into the insertion hole 13 of the body 11 due to the excitation of, the weft thread a is drawn out so as to draw a cone while rubbing between the sliding contact body 23 and the body 11 without being caught on the stop pin 8. On the other hand, when the stop pin 8 advances by a certain dimension from the lower surface of the body 11 and projects into the insertion hole 24 of the sliding contact member 23 due to the release of the excitation of the solenoid 1, the weft a is hooked on the stop pin 8 and stopped. The repetition causes the weft yarn a to be fed out by a fixed length.

[0006]

By the way, in the conventional solenoid device, the stop pin 8 of the insertion hole 13 of the body 11 is not provided.
The structure in which the portion through which the thread enters and exits remains open, so that fly weed and other foreign matter generated by the rubbing of the weft thread a with the sliding contact member 23 and the body 11 at the time of unreeling can pass through the insertion hole 13.
From inside the plunger 6 and the bearing 14, which may cause malfunction or cause wear of internal parts such as the rubber of the bearing 14 and the stopper 16, and the like. Since the abrasion powder generated inside may be discharged to the outside and contaminate the weft a, the improvement has been demanded.

[0007]

SUMMARY OF THE INVENTION A solenoid device for a loom of the present invention has been devised in view of such circumstances, and a soft material such as felt is provided around a stop pin in an insertion hole of a body. The structure is provided with a foreign matter passage preventing material made of a material.

[0008]

[Function] By mounting the foreign matter passage preventing material around the stop pin, fly waste and other foreign matter are prevented from entering the body insertion hole or the inside of the solenoid.
Wear powder generated inside the solenoid is prevented from being discharged to the outside.

Since the foreign matter passage preventing member itself is formed of a soft material such as felt, the operation of the stop pin is not hindered at all.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The solenoid device A of this embodiment is different from the conventional device described above in that a ring-shaped foreign matter made of felt is prevented from passing around the stop pin 8 at the lower end of the insertion hole 13 of the body 11 which is the entrance of the stop pin 8. A material 31 is tightly packed, and a felt stopper 32 having a central hole 33 through which a stop pin 8 is loosely fitted is fitted on the lower surface thereof and is mounted so as not to drop.

This embodiment has such a structure, and the weft yarn a
Fly and other foreign matter generated by rubbing the sliding body 23 and the body 11 at the time of feeding are removed from the insertion hole 13 of the body 11.
And the inside of the housing hole 12 are blocked by the foreign matter passage blocking member 31, and the abrasion powder generated inside the solenoid is also prevented from being discharged to the outside. Moreover, the foreign matter passage preventing member 31 is formed of soft felt, and the center hole 33 of the felt stopper 32 is also loosely fitted to the stop pin 8, so that the operation of the stop pin 8 is not hindered.

That is, according to the present embodiment, fly swabs and other foreign matters are caused to fall between the plunger 6 and the bearing 14 to cause malfunction, or the gap between the butting flange 7 of the plunger 6 and the lower stopper 16 is reduced. This prevents the length of the protrusion of the stop pin 8 from changing upon entry into the shaft, thereby reliably preventing a failure in the stop control operation of the weft feeding. Further, the wear of the rubber of the bearing 14 and the stopper 16 is suppressed as much as possible.

The foreign matter passage preventing member 31 prevents the wear powder generated inside the solenoid from being discharged to the outside, and does not stain the weft yarn a with the wear powder.

In the conventional stop pin 8 in which the entrance and exit are open, when the stop pin 8 retreats into the insertion hole 13 to start feeding the weft thread a, the weft thread a is drawn in together. However, in this embodiment, the insertion hole 13 is used.
Is closed by the felt stopper 32, so that the weft thread a is not pulled in, the weft thread a is smoothly removed from the stop pin 8, and the feeding can be restarted satisfactorily.

In the above embodiment, the foreign matter passage preventing member 3
Although 1 is made of felt, it may be made of another material as long as it is soft enough not to hinder a certain operation of the stop pin 8.

[0016]

[Effects of the Invention] As described above, according to the present invention,
Foreign matter and other foreign matter can be prevented from entering the body through hole and the solenoid by the foreign matter passage prevention material.Therefore, the foreign matter can malfunction between the plunger and the bearing, causing malfunctions or the plunger. It is possible to reliably prevent the stop pin from entering between the stop pin and the stopper and changing the protrusion length of the stop pin. Further, wear of the bearing and the stopper can be suppressed as much as possible, and the durability can be improved.

On the contrary, since the wear powder generated inside the solenoid is also prevented from being discharged to the outside, there is an effect that the weft can be surely prevented from being stained by the wear powder.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

2 (A) is a partially cutaway front view of a weft supply portion to which the solenoid device of the present invention is applied, and FIG. 2 (B) is a partially cutaway plan view thereof.

[Explanation of symbols]

A: Solenoid device a: Weft 1: Solenoid 5:
Core 6: Plunger 7: Abutment collar 8: Stop pin 9: Compression coil spring 1
1: body 12: accommodation hole 13: insertion hole 16: lower stopper 31: foreign matter passage blocking material 32: felt stopper

Claims (1)

(57) [Scope of request for utility model registration] 1. A solenoid which is provided at a tip end of a plunger with a stop pin capable of latching a weft thread fed from a weft thread supply device and constantly biases the plunger to move away from the core by a biasing spring. The plunger is mounted on an upper surface of a body having a through hole through which a plunger is slidably inserted through a bearing, and when the solenoid is excited, the plunger is attracted toward the core against the urging spring. As a result, the stop pin is retracted into the insertion hole to allow the supply of the weft yarn, and when de-energized, the plunger is separated from the core by the urging spring and hits a stopper provided in the insertion hole. In the solenoid device for a loom, wherein the stop pin protrudes from the insertion hole by a predetermined dimension and is stopped by a weft thread to stop the feeding thereof. Around the stop pin in the insertion hole, loom solenoid device, characterized in that attached foreign matter passage preventing member made of a soft material such as felt.