JPH039211B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a head twisting spindle device in a ring spinning machine.

Prior Art It is well known that controlling the ballooning formed between the snail wire and the traveler in a ring spinning machine has the advantage of reducing the centrifugal force and air resistance of the yarn due to the ballooning, and reducing the spinning force. There is. For this reason, a head-twisting spindle is well known which is equipped with a head-twisting means that engages the spun yarn being let out at the upper end of the spindle.When the head-twisting means is used, the twist is simultaneously passed upstream to the unwinding point (nip point) of the draft roller. It is also effective in preventing thread breakage. There are two types of head twisting means: a fixed type that is fixed to the spindle, and a rotary type that is rotatably attached to the spindle.

The above-mentioned fixed head twisting means engages and grips the spun yarn in a crown section provided with an engagement groove, and winds it several times around a winding section provided at the lower part of the crown section due to the rotation difference between the spindle and the traveler. A so-called semi-fixed type has also been proposed in which the winding portion is rotatably attached to a spindle, and the winding portion is rotatably attached to a spindle.

Problems to be Solved by the Invention In the above-mentioned rotary type and semi-rotary type head twisting means, it is preferable that the rotational resistance is small and constant when possible, and that it can withstand long-term use. In this case, a ball bearing or the like is used as a bearing member, but it is more important, has inferior durability, and has a limit in reducing rotational frictional resistance. Other methods such as floating means using magnetic force or oil-impregnated bearings have also been proposed, but these methods, including the use of ball bearings, are used in places with a lot of fluff, and they may impair functionality due to the intrusion and accumulation of fluff. There's a problem.

Means for Solving the Problems In view of the above, the present invention includes a bearing means that is stable even with the above-mentioned high-speed rotation of the spindle and has minimal frictional resistance, and is not affected by this even in places with a lot of fluff. The object of the present invention is to provide a head twisting spindle device. That is, the present invention provides a head twisting spindle device equipped with a head twisting means for engaging and gripping a spun yarn at the upper end of the spindle blade, in which a porous hole is provided between the head twisting means and the spindle blade to which pressurized air is supplied from inside. The present invention is characterized in that an air bearing member is inserted and an air film is formed between the bearing member and the head twisting means.

Operation Since the rotating member is supported by the air bearing member via the air film, the rotational frictional resistance is extremely small and the rotating member rotates smoothly. Further, it is possible to prevent fluff from entering the bearing member.

〔Example〕

1 and 2 show a first embodiment. In this embodiment, the present invention is applied to the above-mentioned semi-fixed type head twisting spindle, and the head twisting spindle device 1 has a head twisting means 3 attached to the top of the spindle blade 2. The spindle blade 2 is rotatably supported by an upper and lower pair of bearing cases 4 and 5 that house bearings 6 and 7, respectively, and the bearing cases 4 and 5 are supported by appropriate spindle holders (not shown). A belt contact portion 8 is formed between both bearings, and a running belt 9 is brought into contact with the belt contact portion 8.
Spindle blade 2 is rotated at high speed.

The head twisting means 3 includes a crown part 11 fixed to the tip of a spindle 10 that is fitted and fixed to the top of the spindle blade 2, and a rotating part located below the crown part 11 and rotatably attached to the spindle 10. 13. The crown portion 11 is provided with a spindle blade 2 in order to enable insertion and removal of the bobbin B as described later.
The diameter is made slightly smaller, and a large number of spun yarn engagement grooves 12 are carved on the outer periphery.

The rotating part 13 consists of a spun yarn winding part 14 having a smaller diameter than the crown part 11 and a cylindrical part 15 having a larger diameter than this winding part. A bearing member 20 is provided.

This air bearing member 20 consists of a multi-hole bearing member 21 attached to the support shaft 10 and an air supply hole 22 communicating with the inner periphery of this bearing member. It is inserted with the following. The air supply hole 22 is connected to a hollow hole 23 passing through the spindle blade 2, and the hollow hole 23 is connected to a pressurized air supply pipe 25 via a rotary joint 24 attached to the lower part of the spindle blade 2.

In the figure, 30 is a snail wire, 31 is a rotating ring, and 32 is a traveler that runs on the rotating ring.

In the above configuration, the draft mechanism (not shown)
The bottom of the spun yarn unreeled from is the snail wire 30
It passes through and engages with the engagement groove 12 of the crown part 11, is wound around the winding part 14 several times due to the rotation difference between the spindle blade 2 and the traveler 32, and is wound around the bobbin B via the traveler 32. .

In this case, the rotating part 13 is supported via an air bearing member 20, and an air film is formed by the pressurized air ejected from the porous bearing member 21. Therefore, the rotational frictional resistance of the rotating part is extremely small, and smooth rotation can be performed. Therefore, the rotating part 13
Since the spindle rotates as the spun yarn is fed out, the spun yarn does not become fluffy or the like.

Next, FIG. 3 shows a second embodiment. This embodiment shows an example in which the present invention is applied to the above-mentioned rotary head twisting spindle. The head twisting spindle device 40 includes a head twisting means 42 attached to the top of a spindle blade 41. The head twisting means 42 is the spindle blade 4
The rotating member 4 is mounted on a support shaft 43 that is fitted and fixed to the top of the rotating member 4.
4 is rotatably inserted and an air bearing member 45 is inserted between the two.
will be deployed. The rotating member 44 includes a crown portion 46 at the upper end, a small diameter portion 47 below the crown portion 47, and a cylindrical portion 48 facing the air bearing member 45 below the crown portion 46. On the outer periphery of the crown portion 46, there is an engagement for engaging the spun yarn. A matching groove 49 is carved.

The air bearing member 45 includes a porous bearing member 50 mounted on the support shaft 43 and an air supply hole 51 bored in the support shaft 43 communicating with the inner periphery of the bearing member. The porous bearing member 50 has a cylindrical shape with a head and covers the upper side and the side of the support shaft 43, and left-force air from the air supply hole passes through the bearing member 50 uniformly to form an air film in the inner hole and the upper part of the cylinder part. . In the figure, 52 is an air exhaust hole.

Incidentally, the spindle blade 41 has the same structure as the previous example, and the explanation thereof will be omitted. However, 53 is a hollow hole passing through the spindle blade 41.

In this rotary head twisting device, a crown part 46 is rotated via a spun yarn forming a balloon as the traveler rotates, and a rotating member 44 including the crown part is formed by an air shaft member 45. The traveler is supported through an air film, so the rotational frictional resistance is extremely small, and the traveler can accurately follow the rotation of the traveler.
Therefore, yarn breakage and fluffing do not occur, and the twist can be effectively run up.

Effects of the Invention According to the present invention, a multi-hole bearing member to which pressurized air is supplied from inside is inserted between the head twisting means and the spindle blade, and the pressurized air is blown out through the bearing member. Since an air film is formed between the bearing member and the head twisting means, the rotational frictional resistance of the head twisting means is extremely small and the head twisting means can rotate smoothly.
It can be used to prevent thread breakage. Further, even in an environment with a lot of fluff, it is possible to prevent fluff from entering the bearing portion.

[Brief explanation of the drawing]

Figures 1 and 2 relate to the first embodiment; Figure 1 is a longitudinal sectional view of the main parts, Figure 2 is an overall front view of the head twisting spindle device, and Figure 3 is the main parts of the second embodiment. FIG. 1 and 40 are head twisting spindle devices, 2 and 41 are spindle blades, 3 and 42 are head twisting means, 1
3 and 44 are rotating members, and 20 and 45 are air bearing members.

Claims (1)

[Scope of Claims] 1. A head twisting spindle device equipped with a head twisting means for engaging and gripping a spun yarn at the upper end of a spindle blade, in which pressurized air is supplied from inside between the head twisting means and the spindle. 1. A head-twisting spindle device, characterized in that a porous bearing member is inserted therein, and an air film is formed between the bearing member and the head-twisting means. 2. The head twisting means includes a crown portion provided with an engagement groove for engaging the spun yarn, and a rotating portion disposed below the crown and having a small diameter spun yarn winding portion formed in the upper portion. The part is fixed to the spindle blade, and a porous bearing member to which pressurized air is supplied from inside is inserted between the rotating part and the spindle blade, and an air film is formed between the bearing member and the rotating part. The head twisting spindle device according to claim 1, characterized in that: 3. The head twisting means includes a rotating member that is rotatably fitted into the spindle blade, and the rotating member has a crown portion that engages and holds the spun yarn at the upper end, and a small diameter yarn winding portion below the crown portion. A porous bearing member to which pressurized air is supplied from inside is inserted between the rotating member and the spindle blade, and an air film is formed between the bearing member and the rotating member. A head twisting spindle device according to claim 1.