JPS643970B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field This invention relates to a lace fixing device for a loom.

Prior Art Conventionally, when attaching a threaded race 2 to a sled 3, which is disposed on the front of the reed 1 and serves as a path for guiding the flight of the shuttle, a thick special washer 4 is used to tighten the bolt 5 as shown in Fig. 1. and the nut 6 was directly tightening the wooden part of the lace 2. Therefore, if the bolt 5 is tightened with excessive torque, there is a risk that the threaded race 2 may be plastically deformed or cracked, so the tightening torque must be controlled to a constant value. Even if the tightening torque is managed at a constant value, the axial force of the bolt 5 decreases over time because the elasticity of the tightened wood decreases. As a result, the rain race 2 sometimes moved due to vibrations and reed striking force. This occurred particularly in the weaving of heavyweight fabrics, where the beating was particularly intense. If the mounting position of the rain race 2 is incorrect, the guide surface of the back plate 7 provided to guide the shuttle and the front surface of the lead 1 will be damaged by the shuttle shock absorber that brakes the incoming shuttle and prepares for the next shuttle strike operation. The straightness of the threads was disrupted, resulting in poor shuttle running, and the shuttle caught the warp threads, making it difficult to run the shuttle.

Purpose This invention was made in order to eliminate the above-mentioned conventional defects, and its purpose is to eliminate the need to control the tightening torque of bolts when assembling a clay lace to a sled, and to provide a long-lasting product for weaving thick fabrics. To provide a lace fixing device whose mounting position is less likely to be distorted by vibration or reed striking force.

Embodiment Hereinafter, an embodiment embodying this invention will be described in the third to third embodiments.
This will be explained according to FIG. Shuttle 1 of Utsudrace 11
A plurality of accommodating recesses 13 each having a mounting hole 13a formed at the bottom thereof are provided on the surface for guiding the recess 2. A spacer 14 consisting of a cylindrical sleeve part 14a and a collar part 14b formed on the upper part of the spacer 14 is provided in the accommodation recess 13, and the sleeve part 14a is inserted into the mounting hole 13.
It is housed in a press-fitted state. The length of the sleeve 14a is formed to be shorter than the length of the mounting hole 13a, and when the rain lace 11 is placed on the sley 17, a gap S is created between the bottom surface of the spacer 14 and the top surface of the sley 17. Utsudo lace 1
1 is attached to the sleigh 17 by bolts 15 and nuts 16 inserted through spacers 14.
A lead 18 is pressed and fixed to the rear side of the rain lace 11 by a flyback 19, and a lead cap 20 is attached to the upper part of the lead 18.

When attaching the rain lace 11 to the sley 17, before tightening the bolt 15, the fifth
As shown in the figure, there is a gap S between the spacer 14 and the sley 17. When the bolt 15 is tightened, the area around the mounting hole 13a of the rain race 11 is compressed and deformed by the flange 14b of the spacer 14.
When the tightening is completed, the distance between the spacer 14 and the sley 17 becomes 0, as shown in FIG. The flange portion 14b of the spacer 14 has a strength that prevents deformation such as warping due to the compression force when compressing the floating lace 11, and compresses the floating lace as the bolt 15 is tightened.

Even if the bolt 15 is further tightened after the distance between the spacer 14 and the slide 17 becomes 0, the spacer 14 hardly undergoes plastic deformation.
There is no risk of the raindrop race 11 deforming more than the above, and unlike the conventional case, there is no fear that the raindrop race 11 will crack due to over-tightening of the bolts 15 even if it is frequently attached and removed. In this invention, the tightening torque need only be managed within the elastic limit of the bolt 15, and since most of the normal tightening torques are within this elastic limit, there is almost no need to manage the tightening torque, unlike in the past.

Furthermore, by tightening the wood lace 11 with plastic deformation from the beginning, the elasticity of the bolt 1 is reduced due to deterioration of the wood, unlike conventional methods.
There is no fear that the axial force of the threaded race 11 will decrease, and the tightening force of the floating race 11 is always kept constant.
Even if the threaded lace 11 is tightened until plastic deformation occurs, the axial force of the bolt 15 is sufficiently large due to the spacer 14 being tightened together, and the axial force of the bolt 15 is sufficiently large due to the beating force when weaving thick fabrics that are particularly strongly beaten. However, the mounting position of the rain race 11 and the position of the lead 18 do not go out of order, and sufficient accuracy can be maintained as a guide surface for the reciprocating movement of the shuttle 12.

Effects As explained above, in this invention, a plurality of housing parts each having a mounting hole formed in the bottom part are provided in the wooden lace, the lower end of the inner periphery of the mounting hole is chamfered, and the upper end of the sleeve part and the sleeve part are chamfered. A spacer is formed from the provided flange part, and the length of the sleeve part is made slightly shorter than the length of the mounting hole, and the spacer is formed to a size that causes plastic deformation of the floating lace when the floating lace is tightened and fixed. is housed in the housing part with the sleeve part of the spacer press-fitted into the mounting hole,
Furthermore, by tightening and fixing the rain lace to the lace via the spacer using a bolt whose head is recessed into the housing part,
This has the following effects.

(a) There is almost no need to manage the tightening torque of the bolts that attach the rain lace to the sley,
There is no fear that the wet race will crack due to over-tightening of the bolt.

(b) By press-fitting the spacer into the mounting hole, the lace around the spacer can be made harder than the base metal, and when tightening the bolt, the lace is compressed by the spacer's brim and the lace, resulting in plastic deformation. Since the lace can be hardened and made of wood with a low elastic limit, there is no risk of deformation due to repeated impacts caused by beating with a reed.

(c) Since the lower end of the inner periphery of the mounting hole is chamfered, burrs caused by plastic deformation of the floating lace will not be caught between the spacer and the lace.

(d) Since the inner periphery of the mounting hole and the stepped portion of the mounting opening are integrally covered with a spacer and fixed by pressure, when tightening the bolt, the bolt directly contacts the inner circumferential surface of the housing portion and scrapes the stepped portion, etc. There is no risk of the spacer flange wobbling, and the tightening surface can be sufficiently protected.

(e) Therefore, it is possible to tighten and fix the muddy lace to the sleigh over a long period of time using a constant strong axial force, and even when weaving thick fabrics, the mounting position of the swamped lace and the sleigh will not be misaligned due to reed beating force or vibration, and the installation position will always be maintained. You can get stable shuttle traffic.

(F) Furthermore, since the bolts do not protrude from the upper surface of the rain race, that is, the flying guide surface of the shuttle, the shuttle can be guided reliably.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a conventional raindrop lace attached state, FIG. 2 is a plan view showing the positional relationship between the lead and the back plate, and FIG. 3 is a cross-sectional view showing an embodiment embodying the present invention. FIG. 4 is a perspective view of the spacer, and FIGS. 5 and 6 are enlarged sectional views of main parts showing the tightened state. Rain lace...11, mounting hole...13a, 2
1a, Spacer...14, 22, Sleeve part...
...14a, collar...14b, bolt...15,
Sleigh...17, between...S.

Claims (1)

[Scope of Claims] 1. A plurality of accommodating portions 13 each having a mounting hole 13a formed at the bottom thereof are provided in the floating lace 11, and the lower end of the inner circumference of the mounting hole 13a is chamfered, so that the sleeve portion 14a and the sleeve portion 14a are A spacer 14 is formed from the collar part 14b provided at the upper end, and the length of the sleeve part 14a is made slightly shorter than the length of the mounting hole 13a, so that when the rain lace 11 is tightened and fixed, the earth lace 11
The spacer 14 is formed to a size that causes plastic deformation in the housing part 13, and
The sleeve part 14a of the spacer 14 is press-fitted into the mounting hole 13a, and the bolt 15 whose head is recessed into the housing part 13 is used to tighten the lace 11 to the lace 17 via the spacer 14. A lace fixing device for a loom, characterized in that it is fixed.