JPH0235820Y2 - - Google Patents

Description

[Detailed description of the invention] <<Industrial application field>> The present invention is applicable to a spinning machine 1 as shown in Fig. 1, for example.
Hanging rails 7, 7 are arranged in two rows in the front and back in the upper half of the machine base 2, and the hanging rails 7 support the Shinomaki bobbins 10a, 10b via the bobbin holder 9. As shown in the figure, the Shinomaki bobbin 10a, 10
This invention relates to a roving guide provided between Shinonaki bobbins 10a and 10b in a spinning machine in which the bobbin holders 9 and 9 are exchanged back and forth.

<<Prior Art>> As a conventional device of this type, one disclosed in Japanese Utility Model Application Publication No. 49161/1988 has been known.

As shown in FIGS. 8 to 10, an upwardly extending corner 28 is formed at both ends of the ring-shaped guide body 15 provided with the insertion port 17, and the tip end portion 28a of this corner 28 is placed on the guide hole 16 side. At the same time, a dividing protrusion 19 is inserted into the insertion opening 1 on the side of the guide body 15 opposite to the insertion opening 17 of the guide hole 16.
7, the roving of the Shinomaki bobbin can be easily inserted from the insertion port 17 to the guide hole 16, and the warped corner can prevent the roving inserted into the guide hole 16 from coming off. 28, and the two rovings guided by the roving guide 13 are divided by a dividing protrusion 19 to prevent the rovings from coming into contact with each other when the position of the Shino-waki bobbin is reversed and replaced.

<<Problems to be solved by the invention>> Roving guide 13 configured as above
The corner 28 extends upward from the guide body 15,
Because the tip portion 28a of the corner 28 has a complicated shape that is curved inward of the guide hole 16,
It is difficult to cut out the mold for injection molding, making mass production by injection molding impossible, and requiring time and effort for manufacturing and finishing.

In addition, since the guide body 15 is formed into a thin rod shape, fibers pulled out from the roving tend to wrap around the guide body 15, and the wound fibers can cause the roving to break or uneven supply of the roving. There was a problem that the quality of the spun yarn was deteriorated.

The present invention was proposed in view of the above problems, and aims to provide a roving guide that has a simple structure, is excellent in mass productivity, and is free from fiber wrapping.

《Means for solving the problems》 To achieve the above purpose, the present invention uses, for example, the second
As shown in FIGS. 7 to 7, the guide body 15 is formed into a short cylindrical shape, and the retaining pawl 18 and the dividing protrusion 19 are positioned within the area of the short cylindrical guide body 15.

<<Operation>> Roving guide 13 configured as above
Since the retaining claws 18 and the dividing protrusions 19 are formed within the region of the short cylindrical guide body 15, the mold forming the roving guide 13 can be pulled out in the vertical direction of the guide body 15.

The two rovings inserted through the guide hole 16 are prevented from coming out by a retaining claw 18, and are separated by dividing protrusions 19.
This prevents the rovings from coming into contact with each other when the positions of 0a and 10b are reversed and replaced.

Furthermore, the fibers that have come out of the rovings guided by the guide hole 16 are guided to the inner surface of the guide hole 16 and are discharged to the outside of the guide body 15.

<<Example>> Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a side view schematically showing a ring spinning machine. Reference numeral 1 in the figure indicates the entire spinning machine, and this spinning machine 1 is provided with spindle rails 3 on the front and rear sides of the lower part of the frame 2, and a spindle (not shown) is inserted above the spindle rails 3. Winding bobbins 4, 4, a travel device (not shown), and drafting sections 5, 5 are provided.

A plurality of creel pillars 6 are erected in the center of the machine base 2 at appropriate intervals in the longitudinal direction.
is supported.

Shinonaki bobbins 10a, 10b are suspended from the suspension rails 7, 7 through bobbin holders 9, 9 in the front and back.

In this way, in the intermediate part of the front and rear Shinomaki bobbins 10a, 10b suspended by the suspension rails 7, 7, the roving yarn 1 that is paid out from each Shinomaki bobbin 10a, 10b is placed.
A roving guide 13 for guiding 1a, 11b to a trumpet 23 of the drafting section 5 is fixed to the creel pillar 6 via a bracket 14.

The roving guide 13 has two drafting parts 5a and 5b arranged side by side on the left and right as a set, and the drafting parts 5a,
The second
It is constructed as shown in FIGS. 4 to 4.

That is, the guide body 15 of the roving guide 13
is formed into a short cylindrical shape and C-shaped in plan view, and guide holes 16 for the rovings 11a and 11b are formed inside thereof, and both end portions 15 of the guide body 15 are formed.
Insertion port 17 for roving threads 11a and 11b between a and 15a
is opened and the insertion opening portion 15 of the guide body 15 is opened.
b is folded toward the guide hole 16 and formed into a retaining claw 18.

Further, a dividing projection 19 is formed on the circumferential surface of the guide hole 16 on the side opposite to the insertion opening 17 for the rovings 11a, 11b so as to protrude toward the inside of the guide hole 16.

This dividing protrusion 19 prevents the rovings 11a and 11b inserted through the guide hole 16 from coming into contact with each other and causing yarn breakage, and is formed by a mounting boss 20 that fixes the roving guide 13 to the bracket 14. .

The roving guide 13 configured as described above is assembled by fitting the boss hole 21 of the mounting boss 20 onto the upper end of the bracket 14 fixed to the creel pillar 6 and fixing it with the fixing screw 22.

Next, the function of the roving guide 13 disposed at the intermediate portion of the Shinomaki bobbins 10a, 10b will be explained based on FIG. 1, FIG. 5, and FIG. 6.

A medium-sized bobbin 10b is placed in the rear row bobbin holder 9.
Load the bobbin 1 into the front bobbin holder 9.
0c (solid line diagram in Figure 5), and the rovings 11a, 11 derived from the respective bobbins 10b, 10c.
After passing the roving yarn 11a from the medium bobbin 10b through the guide hole 16 from the insertion opening 17 of the roving guide 13,
When the roving yarn 11b from the full bobbin 10c is guided to the trumpet 23b of the right drafting section 5b, the roving yarn 11a from the medium bobbin 10b is guided to the left guide arm portion 13a of the roving guide 13 as shown in FIG. , the roving 11b from the full bobbin 10c is guided by the right guide arm portion 13b of the roving guide 13.

Next, spinning is started, and the imaginary line in Figure 5 and the first
As shown in the figure, when the medium bobbin 10b in the rear row becomes the small bobbin 10a and the full bobbin 10c in the front row becomes the medium bobbin 10b, the bobbin holders 9, 9 are removed from the suspension rails 7, 7 using a roving changer (not shown). , bobbins 10a and 10b with small and medium beads
Turn the bobbin holders 9 and 9 together counterclockwise as shown by A in FIG.
are located on the rear side and attached to the support rails 7, 7, respectively.

In this way, when the small and medium bobbins 10a, 10b are reversed, the rovings 11a, 11b drawn out from each bobbin 10a, 10b are prevented from coming off by the retaining pawls 18, and are prevented from coming off by the respective guides. It moves while being guided by arm portions 13a and 13b.

Spinning continues even when both bobbins 10a and 10b are reversed, and the guide arm portions 13a and 1
The fibers coming out of the rovings 11a, 11b guided by the rovings 11a, 11b are guided by the inner surface 11c of the guide hole 16 together with the rovings 11a, 11b and are discharged downward, so that they do not wrap around the guide body 15.

Next, when the small bobbin 10a in the front row becomes an empty bobbin as shown in the solid line diagram in FIG. After replacing the empty bobbin in the front row with the spare changer, the full bobbin 10
Connect the roving thread c to the roving thread remaining from the front (see the imaginary diagram in Figure 6).

Further, spinning continues, and when the full bobbin 10c in the front row becomes the medium bobbin 10b and the medium bobbin 10b in the back row becomes the small bobbin 10c, as shown in the dashed line diagram in FIG.
9 from the suspension rails 7, 7, and after rotating the small bobbin 10a in the front row and the medium bobbin 10b in the rear row together with the bobbin holders 9, 9 in the clockwise direction,
When the bobbin holders 9, 9 are suspended from the respective suspension rails 7, 7, the small bobbin 10a that was in the back row will be located in the front row, and the medium bobbin 10b that was in the front row will be located in the back row. From then on, this process is repeated. spinning machine 1
is operated continuously.

In the above example, the dividing protrusion 1 that divides the two rovings 11a and 11b inserted into the guide hole 16
9 is formed by the mounting boss 20 of the roving guide 13, but as shown in FIG. 7, the dividing projection 19 may be formed to protrude in a wedge shape separately from the mounting boss 20.

Furthermore, the retaining pawl 18 may be formed only in the upper half of the insertion opening 17, as shown by the imaginary line in FIG.

<<Effects>> Since the present invention is configured and operates as described above, it has the following effects.

That is, the guide body of the roving guide is formed into a short cylindrical shape, and the short cylinder has a retaining pawl and a dividing protrusion.The mold for forming the roving guide is pulled out in the vertical direction of the guide body. It can be shaped. This allows for mass production by injection molding, greatly reducing the time and effort required for manufacturing and finishing, and making it possible to manufacture at low cost.

In addition, the fibers that come out of the roving guided by the guide hole of the roving guide are guided by the inner surface of the guide hole and released downward, so it is difficult to transfer the fibers to a guide body such as a rod-shaped guide body. It is possible to eliminate breakage of the roving yarn and unevenness of the spun yarn due to winding or accumulation.

[Brief explanation of the drawing]

1 to 7 show an embodiment of the present invention, FIG. 1 is a schematic side view of a ring spinning machine, FIG. 2 is an exploded perspective view of a roving guide, and FIG. 3 is a cross-sectional view taken along the line -- in FIG. 4 is a sectional view taken along the line -- in FIG. 3, FIGS. 5 and 6 are schematic plan views showing the bobbin position exchange operation, and FIG. 7 is a plan view of another embodiment of the roving guide. 8 to 10 are a plan view, a front view, and a side view of the conventional example, respectively. 11a, 11b...Roving thread, 13...Roving guide, 15...Guide body, 15a...Both end portions of 15, 16...Guide hole, 17...Insertion port,
18...Preventing claw, 19...Dividing protrusion.

Claims (1)

[Scope of utility model registration request] The guide body 15 is formed into a substantially C shape in plan view,
A guide hole 16 for the roving is formed inside the roving, and the roving 11 is formed between the both end portions 15a, 15a.
Open the insertion opening 17 of a, 11b and insert both end portions 15a,
15a from at least the upper part of each roving 11
The retaining claws 18 of the threads a and 11b are pushed into the guide hole 16, and the dividing protrusions 19 of the two rovings 11a and 11b are pushed into the guide hole 16 from the opposite side of the guide body 16 from the insertion opening 17. This roving guide is characterized in that the guide body 15 is formed into a short cylindrical shape, and the retaining pawl 18 and the dividing protrusion 19 are located within the region of the short cylindrical guide body 15.