JPS59216928A - Top supporting type flyer - Google Patents

Abstract

PURPOSE:A top supporting type flyer capable of being manufactured inexpensively, having a flyer top and a bobbin guide leg consisting of a common hollow pipe, having the structure wherein a yarn guide pipe is passed through the wall of the hollow pipe at the neck part, having easy threading. CONSTITUTION:The flyer top 5 and the bobbin guide leg 6 supporting a bobbin top consist of the iron hollow pipe (hollow spindle) 7, and the vertical hole 8 is set at the position of the flyer neck part 1 of the hollow pipe 7 in such a way that the yarn guide is passed through the hollow pipe. The yarn guide pipe 9 reaching from the top 9a of the main body 3 of the flyer through the neck part along the flyer leg 2A to the bottom of it is separately made, the top 9a of the guide is inserted from the hole 8 into the flyer top 5, they are put in a mold, and both the flyer legs 2A and 2B prepared by casting of light alloy are formed at the outer periphery of the pipe. The bushing 10 is set at the top, and the presser 4 is formed at the tip of the leg 2A.

Description

Detailed Description of the Invention Technical Field The present invention provides a flyer top made of iron that supports the flyer at its upper part, and a bobbin guide leg made of iron that always supports the upper part of the bobbin throughout the entire process of package forming, and a flyer body made of light alloy. This invention relates to an improvement in a top-support type flyer for a roving frame, which is provided at the center of the flyer, and has an iron yarn guide tube for passing the braided yarn in the flyer top and one of the flyer legs of the flyer body.

Conventional technology and its problems Conventionally, in order to increase the speed and create a large package for roving machines, a light alloy fryer suitable for high-speed rotation was developed in place of the conventional iron fryer. As development promoted higher speeds and larger packages for roving machines, the larger packages and shorter tube change cycles made tube change work more labor-intensive. For this reason, in order to save labor on pipe changing work on the roving machine, instead of the conventionally known flyer supported on the spindle on the bobbin rail, the upper part of the bobbin is always supported at the center of the flyer throughout the entire process of package forming. An upper support type flyer equipped with a bobbin guide leg was proposed, and roving machines equipped with an upper support complete flyer equipped with this bobbin guide leg came to be widely adopted. Furthermore, as the speed of the roving machine increases, the effects of air and centrifugal force in the flyer section of the roving machine increase the occurrence of fuzzing, roving breakage, and fried roving, which has an adverse effect on the roving. In order to solve this problem, a so-called slitless flyer was introduced in 1987, in which a thread guide tube for passing the braided yarn was built into the flyer leg or the flyer top and flyer leg instead of the conventional grooved flyer.
No. 655 and JP-A-57-167422.

However, the slitless flyer proposed in the above-mentioned Japanese Patent Publication No. 50-7655 is basically supported on a spindle on a bobbin rail, and is not an upper supported type plier, so it is not effective in saving labor in pipe changing work. There is a problem, and the braided yarn is first taken out from the hole in the flyer top, wrapped around the flyer top about 3/4 times, and then passed through the steel pipe that is the yarn guide tube installed in one of the flyer legs. Therefore, the threads wound around the outer periphery of the flyer top tend to become fluffy due to the influence of air as in the past, and the threads are easily broken due to the centrifugal force of the threads. On the other hand, the aforementioned Unexamined Japanese Patent Publication No. 57-16
The slitless flyer proposed in No. 7422 is an upper support type flyer equipped with bobbin guide legs, which can easily save labor in pipe changing work in a roving frame, and can be assembled by air and centrifugal force. There is no problem with the adverse effect on the yarn as the yarn guide tube is installed in both the flyer top and the flyer legs, but this Japanese Patent Application Laid-Open No. 571-1674
In the flyer disclosed in Publication No. 22, the flyer top and bobbin guide legs are separated and produced separately in order to insert the upper part of the yarn guide tube into the flyer top, and an insertion hole is provided in the center of the flyer top. The upper part of the thread guide tube is inserted into the hole from below along the axial direction.

A fitting portion of a separate bobbin guide leg is fitted and fixed into a fitting hole formed on the lower side of the flyer top. Therefore, the length of the fitting part of this bobbin guide leg is limited to a short length of about 1/2 of the neck length of the flyer because it interferes with the yarn guide tube above it, and the length of the fitting part of the bobbin guide leg is limited to about 1/2 of the neck length of the flyer. Compared to a conventional flyer in which the guide leg is constructed from a single long member and fitted into the neck of the flyer, the length of the guide leg is halved, and the guide leg is attached in an extremely unstable manner. It is also conceivable to increase the height of the neck part of the flyer that fits into the fitting part of the bobbin guide leg to increase the fitting length of the bobbin guide leg. Increasing the height increases the height of the machine base and makes it incompatible with the conventional fryer of the existing base. The bobbin guide legs of this top support type pliers are long in length to support the top of the bobbin, which is constantly rotating at high speed during package molding. The bobbin guide leg as described above has a disadvantage in that vibration occurs in a short period of time, and the vibration affects the molding of the package, making it impossible to form the package stably. In addition, the flyer top and bobbin guide legs of this flyer are manufactured separately, and the flyer top has a deep hole, usually about 10 mm in diameter and about 200 mm deep, into which the thread guide tube is inserted. It is necessary to machine a fitting hole to fit the fitting part of the bobbin guide leg, which increases the production cost.Moreover, since the bobbin guide leg is made of solid iron, it is heavy (50% of the total weight of the flyer). (above)) This was an impediment to reducing the weight of the flyer.

Purpose and Summary The present invention was devised after various studies in order to solve the problems in the conventional technology. An iron bobbin guide leg that constantly supports the top of the bobbin throughout the stroke is provided at the center of the flyer body made of light alloy, and an iron guide tube for passing the roving is provided in the flyer top and one of the flyer legs of the plier body. In a top-support type flyer for a roving frame, the flyer top and bobbin guide leg are made of a hollow spindle made of one hollow tube, and a position on the outer periphery of the hollow spindle corresponds to the neck of the flyer body. A vertically elongated thread guide tube insertion hole is provided in the axial direction, and the inner diameter of the hollow spindle is set larger than the outer diameter of the thread guide tube inserted into the hollow spindle through the guide tube insertion hole. Even if the flyer top supporting the flyer and the bobbin guide leg supporting the bobbin upper part are one, the upper part of the yarn guide tube can be easily inserted into the single hollow spindle. Since the flyer top and bobbin guide leg are integrated into one, there is no runout of the bobbin guide leg, and high-speed rotation enables stable package molding over a long period of time.It is also easy to manufacture and can be manufactured at low cost. As well as being able to
It is an object of the present invention to provide an upper support type fryer that can significantly reduce the weight of the fryer and completely eliminate the drawbacks of the conventional fryers described above.

EXAMPLE Hereinafter, the present invention will be explained in detail with reference to an example shown in the drawings. A flyer body 3 consisting of a neck portion 1 at the center of the flyer and two flyer legs 2A and 2B is integrally formed by light alloy casting made of aluminum alloy. is swingably attached to the neck portion 1 of the flyer main body 3, and a flyer top 5 that supports the flyer at its upper part, and a bobbin guide leg 6 that always supports the upper part of the bobbin throughout the entire process of package molding. 1
A hollow spindle 7 constituted by a hollow iron tube is cast, and a longitudinally elongated fiber guide tube is inserted into the outer periphery of the hollow spindle 7 at a position corresponding to the neck l of the flyer main body 3. The hole 8 is opened, and the thread guide tube insertion hole 8
Insert the upper part 9a, which is formed into an arc shape with a relatively large radius as shown in 1m, into the flyer top 5 side in the hollow part of the hollow spindle 7 through the insert. A thread guide tube 9 made of iron such as stainless steel is formed from the upper part 9a along the shoulder of the flyer main body 3 and one of the flyer legs 2A, and connects the shoulder of the flyer main body 3 and the side on which the prefuser 4 is attached. It is cast into the flyer leg 2A. Further, the inner diameter of the hollow spindle 7 is such that the upper part of the thread guide tube 9 is formed into an arc shape with a relatively large radius, and a thread guide tube insertion hole 8 that is longitudinally elongated in the axial direction is formed.
the guide tube 9 for insertion into the hollow spindle 7 through the
The upper end portion of the upper part 9a of the thread guide tube 9 after insertion is formed into a straight line before or after insertion, as shown in the figure, A bushing lO is fitted between the upper end of the upper part 9a of the yarn tube 9 and the inner peripheral surface of the upper end of the hollow spindle 7, and the upper end of the upper part 9a of the yarn tube 9 is fixed to the center of the hollow spindle 7. has been done. Note that the upper part 9a of the arc-shaped thread guide tube 9 inserted into the hollow spindle 7 is formed in an arc shape with a relatively large radius as shown in the figure, so only the upper end thereof is straight. There is no practical problem as long as it is concentric with the hollow spindle 7.
a is a number for insertion; after insertion, an arcuate portion with a relatively large radius may be formed into a straight line as shown by the imaginary line in FIG. By setting the inner diameter of the hollow spindle 7 to be larger than the outer diameter of the thread guide tube, the upper part 9a of the thread guide tube 9 is formed into an arc shape with a relatively large radius, and this arc-shaped guide thread The upper part 9a of the tube 9 can be easily inserted into the hollow spindle 7 through the relatively short longitudinally elongated thread guide tube insertion hole 8 by rotating it in an arcuate direction. As a result, the flyer top 5 and the bobbin guide legs 6 can be made into a single hollow spindle 7, and the height of the neck portion 1 of the flyer body 3 corresponding to the thread guide tube insertion hole 8 of the hollow spindle 7 is also lower than that of the conventional one. It can be made to the same level as a fryer. Further, a plug 11 is fitted to the lower side of the thread guide tube insertion hole 8 of the hollow spindle 7, and the hollow spindle 7 is inserted from the thread guide tube insertion hole 8 during casting.
The molten metal that has flowed into the hollow spindle 7 is prevented from flowing into the lower part of the hollow spindle 7. Note that the means for preventing molten metal from flowing in using the plug 11 is not limited to this.
For example, as shown in FIG. 3, the thread guide tube insertion hole 8 may be closed from the outside by sleeves 14A and 14B fitted around the outer periphery of the hollow spindle 7. Also, a bushing l is fitted between the upper end of the hollow spindle 7 and the upper end of the upper part 9a of the thread pipe 9.

However, the present invention is not limited to this. For example, after inserting the upper part 9a of the thread guide tube 9 into the hollow spindle 7, the upper end of the thread guide tube may be expanded into a funnel shape and fixed to the hollow spindle 7. . On the other hand, at the lower end of the hollow spindle 7, a tapered center nipple 12 made of an elastic body or the like that slightly engages with the upper hole of the bobbin when changing the tube is connected to the center nipple plug 1.
It is attached via 3.

Next, a specific example of the case where the present invention as described above is applied to an upper support type fryer currently in use will be described below. The top support fryer currently in use has an outer diameter of 25 mm for the flyer top and bobbin guide legs, a protrusion of 145 mm from the neck of the flyer body on the flyer top, and a height of the neck of the flyer body. 76 mm, and the outer diameter of the pipe provided in this top-supported flyer is 9 mm (inner diameter 8 mm), and the inner diameter of the hollow spindle in the above embodiment is set to 17 mm. The inner radius for forming the upper part of the inserted thread guide tube into an arc shape is about 365 to 540 mm. Further, in this case, the length of the thread guide tube insertion hole of the hollow spindle is about 65 mm, which is equal to or less than the height of the neck portion of the flyer main body.

The present invention is not limited to the above specific examples.

Determine the inner diameter of the hollow spindle based on the outer diameter of the flyer top and bobbin guide legs, the amount of protrusion of the flyer top, the height of the neck of the flyer body, the outer diameter of the yarn tube, etc. The radius at which the upper part of the thread guide tube is formed into an arc shape may be determined accordingly.

Effects As described above, the present invention has a flyer top made of iron that supports the flyer at the top, and a bobbin guide leg made of iron that always supports the top of the bobbin throughout the package forming process, in the center of the body of pliers made of light alloy. , an upper support type plier for a roving frame in which an iron guide tube for passing braided yarn is provided in the flyer top and one of the flyer legs of the flyer body, and the flyer top and bobbin guide leg are connected to one hollow A hollow spindle consisting of a tube,
Further, an axially elongated thread tube insertion hole is provided on the outer periphery of the hollow spindle at a position corresponding to the neck of the flyer body, and the inner diameter of the hollow spindle is inserted into the hollow spindle through the thread guide tube insertion hole. Since the outer diameter is set larger than the outer diameter of the yarn guide tube to be inserted into the inside, even if the flyer top that supports the flyer at the top and the bobbin guide leg that supports the bobbin top are one hollow spindle, the The upper part of the thread tube to be inserted into the hollow spindle can be easily inserted into the hollow spindle by forming the upper part of the thread pipe into an arc shape with a relatively large radius and inserting it from the thread pipe insertion hole while rotating in the arc direction. can be inserted into the
The hollow spindle prevents the bobbin guide leg from wobbling, and high-speed rotation enables stable package molding over a long period of time.Furthermore, the flyer top and bobbin guide leg are made of a hollow spindle made of a single hollow tube. As a result, compared to conventional fryers, the number of machining parts for the flyer top and bobbin guide legs is significantly reduced, making production easier. This allows the fryer to be manufactured at lower cost, and the weight of the flyer is lower than that of conventional top-supported fryers. It is characterized in that it can completely eliminate the above-mentioned drawbacks of the conventional fryer, and is also compatible with the conventional fryer.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the present invention, FIG. 2 is a partial view showing a state in which a plenosa is attached, and FIG. 3 is a partial view showing another embodiment. 1...Neck part, 2A, 2B...Flyer leg, 3...Flyer body, 4...Plenosa,
5... flyer top, 6... bobbin guide leg, 7... hollow spindle, 8... thread guide tube insertion hole, 9... thread guide tube patent author Howa Kogyo Co., Ltd. No. 11! 1 Figure 3

Claims (1)

[Claims] 1. An iron flyer top that supports the flyer at the top and an iron bobbin guide leg that always supports the upper part of the bobbin throughout the package forming process are provided at the center of the light alloy flyer body; In an upper supported type flyer for a roving frame, which has an iron guide pipe for passing braided yarn in one of the flyer legs of the main body, the flyer top and bobbin guide leg are made of a hollow spindle made of one hollow tube. , and on the outer periphery of the hollow spindle, an axially elongated thread tube insertion hole is provided at a position corresponding to the neck of the flyer body, and further,
An upper support type fryer characterized in that the inner diameter of the hollow spindle is set larger than the outer diameter of the thread guide tube inserted into the hollow spindle through the guide tube insertion hole.