JPH0126695Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Technical field The present invention relates to an improvement of a filament gripping device in a textile machine.

(B) Prior art Usually, devices with interlocking metal claws are used to grip filaments in order to obtain strength and wear resistance, but these gripping devices have extremely low strength For example, when using a fibrous artificial muscle or something with an indeterminate number of filamentous bodies to be gripped, problems such as yarn breakage, damage to the yarn, or part of the yarn bundle falling out may occur. was.

(C) Purpose In order to solve the above-mentioned problems, the present invention provides a filament gripping device that can accurately grip weak yarns or bundles of yarn with an undefined number of yarns with uniform force.

(D) Structure The structure of the present invention to achieve the above object is a thread-like body having a metal claw 2 having a gripping part 22 intersecting with the thread-like body Y, and a gripping receiving part 4 facing the metal claw. In the gripping device, the metal claws 2 can be pressed into contact with the grip receiving portion 4 by a driving member. Moreover, the grip receiving part 4 has a smooth surface,
The elastic tube is fixed to the rigid receiving body 41 with its open ends closed so that an air chamber is formed inside.

(e) Embodiment The present invention will be described below based on an embodiment shown in the drawings.

1 to 3, rectangular claw attachment holes 11 are provided vertically penetrating the metal base plate 1. As shown in FIGS. A part of the metal claw 2, which is swingable in the above-mentioned direction (left and right in FIG. 2), protrudes from the mounting hole. The metal claw 2 includes a plate-like main body 21, a hook-shaped grip portion 22 from the upper end of the main body 21, a mounting leg portion 24 fixed to the back side of the base plate 1, and the mounting portion 2.
4, and a drive rod 25 extending below the shaft 23.

An air cylinder 3, which is a driving member for the metal claw 2, is attached to the lower surface of the base plate 1 via a mounting leg 31. In the air cylinder 3, the lower end of the drive rod 25 is straddled and locked on the front side of a retaining ring 33 fixed to the distal end side of the piston rod 32. And furthermore,
A coil spring 5 for biasing the drive rod 25 rearward is attached to its front portion.

Next, in the grip receiving portion 4, the portion located in front of the claw attachment hole 11 of the base plate 1 is used as a receiving portion main body 41. The receiver body 41 is covered by a natural rubber tube 42 with a smooth surface. That is, the rubber tube 4
2, the middle part in the length direction is the receiving part main body 41.
, and its both ends are bent toward the surface side of the receiver main body 41, and the abutting portions of both ends are pressed and fixed to the back surface of the receiver main body 41 with a fastener 6 such as a presser bolt. As a result, a sealed air chamber 42 is formed in the rubber tube 42 located on the surface side of the receiving portion main body 41.
a is formed.

Note that 3a and 3b shown in FIG. 2 are air conduits of the cylinder 3, respectively.

Next, the operation mode of the above structure will be explained. When the thread Y is running normally, the gripping part 22 of the metal claw 2 is in an upward position, as shown in the second figure.
The thread runs freely in the space above the grip receiving part 4. When compressed air is introduced from one conduit 3a of the air cylinder 3, the piston rod 32 retreats, and the elastic force of the coil spring 5 moves the drive rod 2 backward (to the right in Figure 2). let As a result, the metal claw 2 rotates in a downward direction (to the left in FIG. 2) and grips the thread Y between its gripping portion 22 and gripping receiving portion 4. The grip portion 22 of the metal claw 2 elastically presses the surface of the rubber tube of the grip receiving portion 4 by the action of the coil spring 5. As a result, the rubber tube is depressed as shown in the third diagram (illustrated by phantom lines). In addition, the rubber tube 42 has a smooth surface and elasticity, and
By compressing the air in the air chamber 42a, a more flexible repulsive force is applied, and the thread Y is gripped loosely but firmly. When compressed air is introduced from the other conduit 3b of the air cylinder 3, the metal claw 2 is opened and the thread grip is released, contrary to the above.

In place of the rubber tube 42 of the above embodiment, an elastic tube made of vinyl chloride or other material may also be used.

(f) Effects As described above, the thread gripping device of the present invention has a metal claw and a grip receiving part, the metal claw can be pressed into contact with and separated from the grip receiving part by a driving member, and the grip receiving part has a smooth surface, forms a sealed air chamber inside, and is fixed to the rigid receiver main body, so a soft gripping force is exerted uniformly on weak threads or an irregular number of threads. Therefore, accurate gripping is possible without causing any breakage or damage to the yarn, and without causing any troubles such as part of the yarn bundle coming off.

[Brief explanation of the drawing]

Figure 1 is a plan view showing one embodiment of the present invention;
The figure is a cross-sectional view taken from -- in FIG. 1, and FIG. 3 is a - cross-sectional view taken from FIG. 2. Y... Thread, 1... Base plate, 2... Metal claw, 22...
...Grip part, 25... Drive rod, 3... Air cylinder, 32... Piston rod, 4... Grip receiver, 41
... Receiver body, 42 ... Rubber tube, 42a ... Air chamber, 55 ... Coil spring, 6 ... Fastener.

Claims (1)

[Scope of utility model registration request] It has a metal claw 2 having a grip portion that intersects with the filament Y in a diagonal manner, and a grip receiving portion 4 facing the metal claw, and the metal claw 2 is pressed into contact with the grip receiving portion 4 by a driving member. The grip receiving part 4 is separable and has a smooth surface, and an elastic tube is fixed to the rigid receiving part main body 41 with both open ends closed so that an air chamber 42a is formed inside. A filament grasping device characterized by: