JPH037410Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a trumpet for a roving frame, and more specifically, the present invention relates to a trumpet for a roving frame. This invention relates to a trumpet suitable for being attached to the rear of a vehicle.

(Prior Art) Conventionally, a large number of trumpets for spinning machines have been proposed and used. In general, the two-spindle type is used, for example, in Japanese Utility Model Publication No. 33-8537, because of the reliability of installation and the ease of securing the center distance of one set when using a two-spindle one set type collector. It is preferable to use a synthetic resin trumpet with trumpets on both ends and molded integrally with the mounting plate.

Also, when two rovings are passed through one roller in double roving, etc., with a normal round hole trumpet, the two rovings can be intertwined and reach the front roller, or two rovings can be threaded in parallel. In the former case, it is a well-known problem that the drafting effect is unstable, resulting in poor appearance of the yarn. To solve this problem, a double hole trumpet has been proposed and used. As an example of this, as shown in FIG.
One example is one in which two holes 13a and 13b are provided and molded into the above-mentioned two-spindle shape. In this method, two holes 13a and 13b are bored in one trumpet segment 12' with a gap between two roving yarns, and this gap reduces the problems of yarn breakage and fuzzing. is set to something preferable.

As mentioned above, trumpets of all kinds of structures are used to manufacture the various required yarns, but it is also true that there is an increasing desire to manufacture yarns with a wide variety of higher quality. be.

(Problems to be solved by the invention) As mentioned above, the invention is a system that feeds three rovings to one spindle roller and drafts and burns them, and in particular, blends colored rovings of different colors in the roving process. This relates to the structure of the trumpet required when roving is carried out.The feeding state of roving when using a conventional single-spindle trumpet 1' is explained with reference to Fig. 4. roving 7
The front roller 9 is focused on the trumpet 1' and passes through the back roller 5 and the apron 8.
When reaching this point, it is inevitable that the rovings 7 overlap each other or cross boundaries. That is, when the rovings 7 are colored rovings with different colors, the color order changes due to the above-mentioned border crossing, and even if the mixing ratio of the colors remains the same, the color change that appears on the outer periphery of the rovings 7 will change. This will cause severe discoloration.

Furthermore, the aforementioned double-hole trumpet 12, which has multiple holes in one trumpet segment and three holes for feeding three rovings, is easy to handle. However, there are many problems in producing high quality yarn. That is, in order to supply three rovings, especially colored rovings with different colors, and to make each color appear on the surface of the rovings in the same ratio without color unevenness while drafting and twisting them, a cross crawler is used. Not only is it necessary to ensure that the order of color in progress does not change from the time of biting in to the time of cutting out, but it is also necessary to make extremely delicate adjustments such as the gauge between the roving paths. However, with the conventionally used trumpet, it is impossible to make the above-mentioned complicated and delicate adjustments to obtain high-quality colored roving with no unevenness. In this case, the finished product is bound to be a defective yarn with many color spots.

The present invention was devised in view of the above-mentioned problems, and is used when three rovings, especially colored rovings of different colors, are fed to one spindle roller for drafting and twisting in a roving machine. The purpose is to produce uniform, high-quality yarn without changing the surplus order and by delicately adjusting the supply condition.

(Means for Solving the Problems) The above object is to provide a trumpet which is arranged in a roving feeding section of a roving frame, and which consists of three trumpets each having a circular roving outlet or a roving outlet approximating the circular shape. The trumpet segments are made by combining the trumpet bodies, and the gauge between the roving ports can be adjusted, and the axial direction of the roving running hole is positioned approximately perpendicular to the back crawler axis. This is achieved by a trumpet for a roving frame which is also characterized.

Below, Figures 1a and b are front views of an embodiment of the trumpet according to the present invention, Figure 1c is a perspective view thereof, and a top view of the draft part of a rover frame equipped with the trumpet The present invention will be explained with reference to FIG. 2, which is a diagram. trumpet 1
is formed by combining and processing three trumpet segments 1a, 1b, 1c, and the trumpet segments 1a, 1c are combined and processed.
Each of b and 1c is made of a plastic and lightweight material such as synthetic resin as usual. Of these trumpet segments 1a, 1b, 1c, the segments 1a, 1b located on both the left and right sides are manufactured in a symmetrical shape, and at least one side of the roving inlet 4 has a funnel-shaped curved surface 6. are positioned at both left and right ends, and another split body 1c is sandwiched in the center. 3 trumpet fragments 1a, 1
b, 1c each have a roving outlet 2 which is circular or approximated thereto.

Such three trumpet segments 1a, 1b, 1
c has a pair of mounting plates 10 molded at its lower part, and is adapted to be fixed with screws or the like after setting the gauge d between the roving ports 2 to an optimum value. This gauge d is appropriately determined depending on the thickness of the supplied roving 7 and the size of the roving outlet 2 adapted to the thickness.

Trumpet 1 formed with the above structure
is fixed to the traverse bar 11 located at the rear of the back roller 5 of the roving machine, with the gauge d and the correct spindle pitch as described above.

[Effect]

The trumpet 1 according to the present invention is disposed on a traverse bar 11 at the rear of a back roller 5 of a roving frame, and the supplied roving 7 passes through the trumpet 1, the back roller 5, and the apron 8 in sequence to reach the front roller 9. However, when three color rovings 7a, 7b, and 7c are supplied to one draft part, the rovings 7a, 7b, 7b, and 7c are wide enough to prevent border crossing, and fluffing does not become a problem. The rovings 7a, 7b, and 7c are fed to the bag roller 5 with a gap of about 100 degrees, and the order of the rovings 7a, 7b, and 7c does not change from there until the front roller 9 starts feeding. The resulting color blended roving is
As shown in the figure, the three colors 7a, 7b, and 7c of the supplied roving appear sequentially at the same ratio on the outer periphery.

Note that the axial direction of the roving thread running hole 3 is
Since it is arranged at almost right angles to the axis, the supply roving 7
At the time of biting into the bag crawler 5, three rovings are running parallel to each other, and they are sequentially subjected to a traft action, and a good blended roving is completed immediately after leaving the front nip point. Also, of the three trumpet segments 1a, 1b, 1c, two on both sides 1a, 1
b is preferable because the outer surface of the trumpet 1 is formed into a funnel-shaped curved surface 6 in which the hole is narrowed at the end from the roving inlet 4 to the roving outlet 2. be.

(Effects of the invention) As mentioned above, even if the trumpet of the present invention is supplied with three different colored rovings, by making them pass through the trumpet, the process order from the biting of the back roller to the feeding of the front roller can be controlled. Since this does not change and each roving gap can be set optimally, a high quality blended roving without color unevenness can be obtained.

It goes without saying that the supplied rovings can be twisted in a good manner regardless of whether they are of the same color or different colors.

In the color blended roving obtained using the trumpet according to the present invention, the color unevenness problem that was unavoidable in the past does not occur at all, and the color blended yarn obtained by passing this through the spinning process is extremely excellent. It has an appearance.

[Brief explanation of the drawing]

Figure 1 shows an embodiment of the trumpet according to the present invention, Figures 1a and b are front views thereof,
Figure c is a perspective view of the same, Figure 2 is a plan view showing the draft part of the roving frame equipped with the same trumpet, and Figure 3 is a perspective view of the same.
The figure is an explanatory diagram of the color blended roving obtained by this method, Figure 4 is a top view of the draft part of a conventional roving machine equipped with a single spindle trumpet,
The figure is a front view of a conventional double-hole trumpet. 1, 1'... Trumpet, 1a, 1b, 1c
...Trumpet segment, 2...Rovering outlet, 3...
...Roving running hole, 4...Roving inlet, 5...Xx crawler, 6...Funnel-shaped curved surface, 7...Roving, 7
a, 7b, 7c...Color roving, 8...Apron, 9...Front roller, 10...Mounting plate,
11...Traverse bar, 12...Double hole trumpet, 12'...Trumpet segment, 13a,
13b...hole.

Claims (1)

[Claims for Utility Model Registration] (1) In a trumpet disposed in the roving supply section of a roving machine, the trumpet 1 is composed of three trumpet segments each having a roving outlet 2 that is circular or approximated thereto. 1a, 1b, 1c
The trumpet segment 1
a, 1b, and 1c are arranged so that the gauge d between the roving outlet ports 2 can be adjusted, and the axial direction of the roving thread running hole 3 is positioned approximately at right angles to the axis of the cross roller 5. Features a trumpet for the roving frame. (2) Three trumpet segments 1a, 1b, 1c
is two trumpet segments 1a and 1b having a bilaterally symmetrical shape, and one trumpet segment 1c located in the center between the two trumpet segments 1a and 1b. The trumpet segments 1a and 1b have a funnel-shaped curved surface 6 on at least one side of the left and right side of the roving inlet 4, and the curved surfaces 6 are positioned at both ends, and one trumpet segment 1c is sandwiched and combined.Registered utility model. A trumpet for a roving frame according to claim 1.