JPS62133162A - Yarn delivery apparatus braiding machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention provides a means for transporting a tubular member through a central hole in a plate surface from a carrier revolving through an annular meandering guide groove formed in the plate surface. The present invention relates to an improvement in a yarn unwinding device that is disposed on a carrier and guides the yarn unwound from a bobbin toward the tubular member in a braiding machine that unwinds yarn to form a braided layer on a tubular member.

<Prior Art> Conventionally, this type of braiding machine has a central hole 3 on a base plate surface 2 through which a tubular member l such as a hose is passed, and two annular meandering guide grooves 5.
Each annular meandering guide groove 5 had a structure in which a plurality of carriers 6 corresponding to the number of implantations were arranged, intersecting and revolving in different directions. Then, the threads 9 from the bobbin 7 attached to each carrier 6 are concentrated into the central tubular member l, and each carrier 6
As it revolves, the yarn 9 is wound around the tubular member 1 to form a braided layer.

There are various types of carrier 6 mentioned above (Jikko Sho 6
0-36637, etc.), for example, the carrier 6 shown in FIG. Insert the tensioner 17 through the hole 15.
The wave is applied to the yarn guide roller 21 of the yarn feeding device 19 disposed at the tip of the auxiliary mass 13 via the roller 18 of the auxiliary mass. This thread feeding device fi19 connects the thread guide roller 21 and the second bracket 25 to the first bracket 23.
is pivoted and 12! The first bracket 23 is also auxiliary, and the bearing of the striker 13 is pivotally supported by a member 27 via a bearing. The thread feeding device 19 is attached to the annular meandering guide groove 5 of the base plate surface 2 with the axial direction parallel to the transportation direction of the tubular member l.

Therefore, this carrier 6 is connected to the annular meandering guide groove 5 of the braiding machine.
When the first bracket 23 revolves along the thread 9, the first bracket 23 is rotated by the tension of the thread 9, so that the thread outlet 29 of the second bracket 25 is constantly directed towards the center (in the direction of the tubular member 1).

<Problems to be Solved by the Invention> However, if the annular meandering guide groove 5 of the braiding machine is largely bent, the yarn unwinding device 19, which rotates freely relative to the carrier 6 when the carrier 6 revolves, is unable to rotate by itself. The inertial force of the yarn 9 may overcome the tension of the yarn 9, causing a swinging movement, especially around the inflection point of the annular meandering guide groove 5 (the fourth
(see figure). This oscillating movement of the thread pay-out device fl 19 becomes significant when the revolution speed of the carrier 6 is high.

When this swinging motion occurs, the direction of the thread 9 and the thread groove 22 of the thread guide roller 21 of the thread pay-out device 19 is shifted, and the thread 9 comes into contact with the peripheral wall of the thread pay-out port 29 of the second bracket. It will be bent at the thread payout port 29. Therefore, the uniformity of the tension of the yarn 9 may be impaired due to contact resistance with the peripheral wall of the yarn outlet 29, and there is a possibility that unevenness may occur in the braided layer of the tubular member 1.

On the other hand, if the thread feeding device 19 repeats the swinging motion as described above, the life of the thread feeding device 19 will also be shortened.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a yarn unwinding device for a braiding machine that solves these problems, keeps the tension applied to the yarn constant at all times, and improves durability.

Means for Solving Problems〉 The yarn feeding device of the braiding machine according to the present invention has a first yarn feeding device whose axis is perpendicular to the yarn fed from the bobbin.
A thread guide roller and a cylindrical second thread guide roller whose axis is substantially parallel to the transportation direction of the tubular member and which is disposed in a direction substantially perpendicular to the first thread guide roller in three dimensions are fixed to the carrier. In order to achieve the above object, the yarn is fed out from the first yarn guide roller to the second yarn guide roller in the direction of the tubular member.

<Example> Next, an example of the present invention will be described based on illustrated examples. Incidentally, the same members as those in the conventional example (Fig. 3.4) are given the same reference numerals and their explanations will be omitted.

FIG. 1 is a perspective view of the yarn letting-out device 31 of the embodiment, and this yarn letting-out device 31 is arranged at the tip of the auxiliary mast 13 of the carrier 6 similar to the conventional example.

The thread feeding device ri31 of the embodiment has a cylindrical bracket 3 attached to a supporting cylindrical portion 41 formed at the tip of the auxiliary mast 13.
7 is fixed. A pivot shaft 32 that rotatably supports the cylindrical first yarn guide roller 33 is installed on the upper end support portion 39 of the bracket 37 via a bearing.

The first yarn guide roller 33 is disposed in a direction perpendicular to the axis of the yarn 9, which is fed out from the bobbin 7 and applied with a predetermined tension via the tensioner 17.

Further, a support stand 43 is protruded from the side surface of the bracket 37, and a pivot shaft 34 that rotatably supports the cylindrical second thread guide roller 35 is erected on the support stand 43 through a bearing. . The second yarn guide roller 35 is arranged in a direction substantially perpendicular to the first yarn guide roller three-dimensionally. Therefore, the axis of the second yarn guide roller 35 is substantially parallel to the transportation direction of the tubular member l.

And the thread feeding device of the example! Yarn 9 at l 31
The tubular member 1 is inserted through the supporting cylindrical portion 41 and the bracket 37 from below to above and hung on the first thread guide roller 33, and then hung on the side surface of the second thread guide roller 35.
It will be rolled out in the direction of.

FIG. 2 shows the relationship between the yarn 9 and the movement of the carrier 6 provided with the yarn feeding device 31 of the embodiment.

In this way, according to the yarn feeding device 31 of the embodiment, the yarn 9 from the first yarn guide roller 33 to the second yarn guide roller 35, and the yarn 9 from the second yarn guide roller 35 to the tubular member l. The angle formed by the carrier 6 changes every moment as the carrier 6 moves. but.

Since the yarn 9 is in contact only with the first yarn guide roller 3 and the second yarn guide roller 35, which are constantly freely rotating, no tension abnormality occurs in the yarn 9.

In the yarn unwinding device 31 of the above embodiment, the angle formed by the yarn 9 from the first guide roller 33 to the tubular member 1 via the second yarn guide roller 35 changes every moment as the carrier 6 moves. Therefore, the second yarn guide roller 35 is displaced in the axial direction. For this reason, the second guide roller 35 must be cylindrical, while the first thread guide roller 33
may be a disc-shaped roller having grooves on the outer periphery as shown in the conventional example.

Further, the positional relationship between the first yarn guide roller 33 and the second yarn guide roller is determined from the viewpoint that the second yarn guide roller 35 makes the axis parallel to the transportation direction of the tubular member l and stabilizes the direction in which the yarn 9 is fed out. , the first roller may be located three-dimensionally substantially orthogonal to the first roller, and there are no particular limitations on the positional relationship or spacing between the two.

Note that each of these rollers is made of lightweight metal, ceramics, or the like.

<Effects of the Invention> As explained above, the yarn feeding device of the present invention includes a first yarn guide roller whose axis is positioned perpendicular to the yarn fed out from the bobbin, and a direction in which the tubular member is transported. A cylindrical second yarn guide roller whose axes are substantially parallel and is positioned in a direction three-dimensionally orthogonal to the first yarn guide roller is fixed to the carrier, and the yarn is guided between the first yarn guide roller and the second yarn guide roller. It has a configuration in which the two threads are hung in order on guide rollers, and then fed out into the tubular member. Therefore, the yarn comes into contact only with the first and second yarn guide rollers, which are constantly freely rotating.

In other words, unlike the conventional example, since the yarn does not come into contact with the side wall of the yarn outlet, abnormal tension does not occur in the yarn, and a stable braided layer can be formed on the tubular member. Of course, even if the machine is operated at high speed, the stable forming performance of the braided layer will not be impaired.

Furthermore, since the thread payout device is fixed relative to the auxiliary mast of the carrier, conventional oscillating movements are not possible, thus extending the service life. And furthermore,
Since the number of parts is reduced compared to the conventional example, the device is easy to assemble and maintain, and manufacturing costs are reduced.

[Brief explanation of drawings]

The figures show a yarn unwinding device of a braiding machine, FIG. 1 is a perspective view showing a yarn unwinding device 31 according to an embodiment of the present invention, and FIG. FIG. 3 is an explanatory diagram showing a conventional yarn feeding device 19 and carrier 6, and FIG. FIG. 1... Tubular member, 2... Base plate surface. 3... Center hole, 5... Annular meandering guide groove, 6... Carrier, 7... Bobbin. 9... Yarn, 31... Yarn pay-out device, 33... t5f series guide roller. 35...Second yarn guide roller. −～Kiri■to■So00 Figure 3

Claims (1)

[Scope of Claims] A thread is let out from a bobbin of a carrier revolving around an annular meandering guide groove formed on the base plate surface to the tubular member being transported through the center hole of the base plate surface. In a braiding machine for forming a braided layer, a yarn unwinding device is disposed on the carrier and guides the yarn unwound from the bobbin in the direction of the tubular member, the yarn unwinding from the bobbin. a first yarn guide roller whose axis is positioned in a direction perpendicular to the thread; and a tube whose axis is approximately parallel to the transportation direction of the tubular member and which is positioned in a direction that is three-dimensionally orthogonal to the first guide roller. a second thread guide roller having a shape fixed to the carrier, and the thread is unwound from the first thread guide roller to the second thread guide roller in the direction of the tubular member. A yarn feeding device for a braiding machine, characterized in that: