JPH0133575B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cylinder halflap used for a comb in the carding process in spinning.

As shown in Fig. 1, the conventional cylinder half-lap for combing has grooves 2 in the cylinder half-lap body 1.
are formed in the radial direction of the cylinder, and small grooves 3 are formed in the diagonal direction, a needle plate 5 with a needle head 4 is laminated, and a band-shaped metal plate 6 is inserted and fixed into the dovetail groove 7 provided on the side surface of the needle plate. The needle row ribbons 8 formed by the above-mentioned method were inserted into the grooves 2 and arranged in rows. Note that the protrusion 9 provided on the side surface of the throat plate 5
is engaged with the small groove 3.

In the above cylinder half-lap for combing, the degree of fitting between the groove 2 and the needle row ribbon 8 is important; there must be no gap and it must be easy to insert, but this relationship is contradictory. This is obvious, and as a result of prioritizing ease of insertion, when the fiber is subjected to the combing action by the needle head 4, the component force is
F ₁ acts in the direction to pull out the needle row ribbon 8 from the groove 2, and as the needle row ribbon 8 dances in the groove 2, the impactful repeated force eventually promotes wear and deformation of the groove 2 due to long-term use. As a result, the gap between the groove 2 and the needle row ribbon 8 becomes larger, which not only causes a deterioration of dynamic accuracy and a decrease in the combing action, but also makes the cylinder half-lap body 1, which should be usable semi-permanently, become unusable. There were many shortcomings mentioned above.

Furthermore, in order to minimize the gap, the precision of the groove 2 must be improved, which has the drawback of increasing processing costs.

The cylinder half-lap for combing according to the present invention solves the above-mentioned conventional drawbacks, and embodiments thereof will be described below with reference to the drawings.

Embodiment 1 FIG. 2 is a sectional view of a main part of a cylinder half-lap for a comb according to the present invention.

The cylinder half-lap body 1 has grooves 1 having a substantially rectangular cross-section in the axial direction, at equal intervals around the cylinder circumference.
Punch 0. A groove 10 is bored. Small grooves 11 each having a substantially triangular cross section are provided on the side surfaces of the grooves 10.

It consists of a needle base 12 having a needle head 4 with a working angle α in the cylinder rotation direction on the upper part, and a substantially rectangular needle insertion part 13, and the needle insertion part 13 has an I-shaped slit 14.
A throat plate 15 is formed. A recess 16 having a substantially triangular cross section is provided in a portion of the front surface of the needle insertion portion 13 of the throat plate 15 at a position corresponding to the small groove 11 of the cylinder half flap.

The needle heads 4 of the needle plates adjacent to the needle plate 15 in the cylinder axial direction are alternately shifted in the cylinder rotation direction,
A plurality of needle plates are stacked so as to be arranged in a staggered manner, and a continuous body 17 made of metal or synthetic resin is fitted and fixed in the slit 14 of the throat plate to form a throat plate laminate 18 as shown in FIG. .

Insert the throat plate laminate 18 into the groove 10 of the cylinder half-lap body from the axial or radial direction, and align the recess 16 of the throat plate laminate 18 with the small groove 11 provided on the groove side of the cylinder half-lap. The combed cylinder half lap of the present invention is constructed by inserting and fixing a radially directed retaining member 19 into the space formed by the recess 16 of the throat plate laminate and the small groove 11 of the cylinder half lap. In addition, the retaining material 1
9 is formed from a spring pin having a hollow circular cross section as shown in Fig. 3a, a cut on a part of the circumference, and a length as shown in Fig. 3b, and having elasticity in the radial direction. .

Since the combed cylinder half flap of the present invention has the above configuration, the throat plate laminate 18 is pressed against the rear surface of the groove 10 by the spring effect of the retaining member 19, and does not come off in the radial direction. Further, a retaining material 19 is placed in the concave portion 16 of the throat plate laminate and the small groove 11 on the groove side surface of the cylinder half flap.
Because they spread out and touch each other, there is no gap, and the throat plate laminate 1
8 does not swing inside the groove 10.

Embodiment 2 Figure 4 shows a compression coil spring 20 as a retaining material.
This is an example using .

The compression coil spring is twisted once through the core metal to reduce its outer diameter, and then inserted from the axial direction into the space formed by the recess 16 of the throat plate laminate and the small groove 11 on the side of the cylinder half-lap groove, and then the force used to twist it. By removing this and leaving it in a free state, the elasticity in the radial direction prevents it from coming off.

In this embodiment, by using the compression coil spring as described above, there is an advantage that there is no resistance during insertion and insertion is easy.

Example 3 Figure 5 shows a hollow body 2 made of Al/Cu as a retaining material.
1 is a cross-sectional view showing a method of expanding and fixing.

A hollow soft metal is inserted as a retaining material, both ends of the hollow body 21 are supported by jigs 22 and 23, and high-pressure fluid is applied from the direction A of the jig 23 having a hole in the axis. By pressing the tool 22 toward the hollow body, the hollow body is expanded and the throat plate laminate is fixed. Even when the high pressure is removed after the expansion, the expanded hollow body holds the throat plate laminate by desired deformation.

This embodiment also has the advantage of being easy to insert the hollow body and having a strong holding force as in the second embodiment.

As shown in the above embodiments, there is no gap in the groove of the throat plate laminate, which eliminates the conventional drawbacks, and
This invention has excellent effects such as no need for precision in machining the grooves, and because the clearance can be increased, it is easy to insert the throat plate laminate, and the clearance is completely absorbed by the elasticity of the retaining material. .

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the main part of a conventional cylinder half-lap for combing, FIG. 2 is a cross-sectional view of the main part showing an embodiment of the cylinder half-lap for combing of the present invention, and FIG. FIG. 4 and FIG. 5 are sectional views showing other embodiments of the retaining material of the present invention. 1...Cylinder half flap body, 2...Groove,
3...Small groove, 4...needle head, 5...throat plate, 6...metal plate, 7...dovetail groove, 8...needle row ribbon, 9...convexity, 10...approximately rectangular groove, 11...Komizo, 12...
... Needle base, 13 ... Needle insertion part, 14 ... Slit, 15 ... Throat plate, 16 ... Recess, 17 ... Continuous body, 18 ... Throat plate laminate, 19 ... Removal prevention material,
20... Compression coil spring, 21... Hollow body, 22
...Jig, 23...Jig having a hole in the shaft center.

Claims (1)

[Claims] 1. A plurality of needle plates formed from a needle base having a needle head at the top and a needle insertion portion having a substantially rectangular shape with a recess on the side surface are laminated and fixed to form a throat plate laminate, and a cylinder half-flat is formed. The throat plate laminate is inserted and arranged in a row into a plurality of substantially rectangular insertion grooves bored in the needle plate laminate and having small grooves at positions corresponding to the recesses provided in the throat plate laminate. A cylinder half-lap for a combed cylinder, characterized in that a retaining material is inserted and fixed into a space formed by a concave portion of the cylinder half-lap and a small groove of the cylinder half-lap.