JP2002038337A - Spindle of spinning machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the weight and reduce the production cost of a spindle of a spinning machine. SOLUTION: The individual spindle driving motor 1 is integrated with a spindle 3 supported on a bolster 2 used as a casing. The bolster 2 is fastened and fixed to a prescribed position of a spindle rail 7 together with a motor housing 4. The spindle shaft 9 of the spindle 3 is inserted into the bolster 2 and rotatably supported by a bearing 8 built in the bolster 2. The spindle 3 is provided with an upper blade 10 for holding a bobbin B, the spindle shaft 9 fixed to the lower center part of the upper blade 10, a supporting cylinder 11 pressed and fixed on the outer circumference of the lower part of the upper blade 10 and a bobbin receptor 12 pressed and fixed into the upper blade 10 at a part above the supporting cylinder 11. A rotor 15 is fixed to the straight part 11a of the supporting cylinder 11. Draw-formed articles produced by the draw forming of a steel plate are used as the supporting cylinder 11 and the bobbin receptor 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle of a spinning machine such as a ring spinning machine and a ring twisting machine.

[0002]

2. Description of the Related Art Generally, a spindle of a spinning machine such as a ring spinning machine or a ring twisting machine is rotatably supported by a bolster at a shaft portion of a spindle supporting a bobbin, and is rotated by a belt running while being pressed against a spindle worm. It is designed to be driven. Conventionally, a belt-driven spindle has an upper blade 41 as shown in FIG.
Spindle shaft 42 fitted to the lower part of upper blade 41
, A spindle lobe 43, and a bobbin receiving portion 44 mounted above the spindle lobe 43.
The bobbin receiving portion 44 includes a tail thread winding portion 44a and a ring-shaped cutting blade (not shown). The upper blade 41 is made of an aluminum-based metal for weight reduction. The wobble portion 43a of the spindle worm 43 as a power transmission portion has a curved surface in which the contact surface with the belt bulges outward so that power can be transmitted from the belt satisfactorily. The spindle lobe 43 is formed by cutting an iron material.

In this type of spinning machine, a braking device is provided for each weight, and when a yarn breaks, a braking device provided for the weight is operated to forcibly stop the rotation of the spindle. Perform the splicing work in the state. As the braking device, a device generally called a knee brake is used, and the rotation of the spindle is forcibly stopped by the lever coming into contact with the flange portion 43b of the spindle wobble 43.

In recent years, in order to increase the number of spindles in the spinning frame or to increase the rotation speed of the spindle, instead of driving all the spindles of the spinning frame with one motor, a spindle is provided for each spindle. A device provided with a driving motor has been proposed. Japanese Patent Application Laid-Open No. 2-19521 discloses a spindle shown in FIG. 3B as a spindle of a single spindle driving motor. That is, the rotor 4 is attached to the spindle 42.
A member 46 in which the part to which the fifth member 5 is attached and the tail thread winding part 44a are integrally formed is fixed. A bobbin receiving portion 44 is provided at an upper end of a member 46 constituting the drive transmitting portion. Although there is no detailed description of the member 46, it is considered that the member 46 is formed by cutting a ferrous material, like the spindle worm 43 of the belt driven spindle.

[0005]

SUMMARY OF THE INVENTION Spindle wobble 43
Is formed by cutting a ferrous material, it takes a long time to perform the cutting, and a large amount of cutting chips are generated, which makes the processing difficult. Therefore, the thickness is increased and the weight is increased in order to save time and labor for cutting. In addition, since the spindle lobe 43 and the member 46 rotate integrally with the spindle shaft 42, if the weight is large, there is a problem that speeding up is hindered and power consumption increases.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to reduce the weight of a spindle driven by a belt and a spindle driven by a single weight, and to reduce the manufacturing cost. An object of the present invention is to provide a spindle of a spinning machine.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, an upper part of a spindle shaft rotatably supported on a cylindrical casing via a bearing is provided.
In a spindle of a spinning machine to which an upper blade to which a bobbin is mounted is fixed, at least a driving force transmitting portion for transmitting a driving force to the upper blade is formed of a drawn product. The driving force transmitting unit means a portion that transmits driving force to the spindle, such as a spindle worm to which a driving belt is pressed and a portion to which a rotor of a spindle motor for driving a single spindle is fixed.

Therefore, in the present invention, since the driving force transmitting portion is formed of a drawn product, the driving force transmitting portion is lighter than a conventional driving force transmitting portion formed by cutting of an iron material. And the power consumption is reduced when driving at the same rotational speed.
Also, the manufacturing cost can be reduced.

According to a second aspect of the present invention, in the first aspect of the present invention, the spindle is a spindle for driving a single weight, and the driving force transmitting portion is for mounting a rotor of a single weight driving motor. It is a straight part. According to the present invention, the rotational force of the rotor is transmitted to the spindle in the straight portion formed by drawing. That is,
The straight portion may be a simple cylindrical portion and can be easily formed only by drawing.

According to a third aspect of the present invention, in the first aspect of the invention, the spindle is a belt driving spindle, and the driving force transmitting portion includes a belt hook portion, and an outer periphery of the belt hook portion. The surface is cut. According to the present invention, since the driving force transmitting portion includes the belt hooking portion, it is necessary to slightly cut the outer peripheral surface after the drawing process. However, as compared with the cutting process from the iron material, the process is less troublesome.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the bobbin receiving portion for positioning the spindle by abutting the lower end surface of the mounting bobbin. It is formed by drawing. Therefore, according to the present invention, the weight of the spindle can be further reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a first embodiment in which the present invention is embodied in a spindle of a single spindle driving motor.
A description will be given according to (a) and (b).

As shown in FIG. 1A, a single-spindle driving motor 1 is integrated with a spindle 3 supported by a bolster 2 as a casing. The bolster 2 has a flange portion 2a on the way, and the motor housing 4 is inserted in a state where the upper side of the flange portion 2a is inserted into the motor housing 4.
It is fixed to. The bolster 2 is provided with a motor at a predetermined position on a spindle rail 7 of a spinning machine stand via a nut 5 screwed into a male screw portion formed below the flange portion 2a and a washer 6 arranged below the flange portion 2a. Housing 4
It is to be tightened and fixed together. The bolster 2 has a bearing 8 built therein. The spindle 3 has a spindle shaft 9 inserted into the bolster 2 and is rotatably supported via the bearing 8.

As shown in FIG. 1B, the spindle 3 has an upper blade 10 on which a bobbin B (shown by a chain line) is mounted.
A spindle shaft 9 fixed to the lower central portion of the upper blade 10, a support cylinder 11 as a driving force transmission unit press-fitted and fixed to the lower periphery of the upper blade 10, and an upper blade 10 above the support cylinder 11. And a bobbin receiving portion 12 which is press-fitted and fixed. The upper blade 10 is made of aluminum or an aluminum-based alloy, and the spindle shaft 9 is insert-molded on the upper blade 10. A drawn product formed by drawing a steel plate is used for the support cylinder 11 and the bobbin receiving portion 12.

As shown in FIG. 1C, the bobbin receiving portion 12
Is formed in a cylindrical shape having a flange 12a at a lower portion, and a large number of concave portions 12b are formed at predetermined intervals on a peripheral edge of the flange 12a. The upper blade 10 has a large diameter at the middle between the lower end where the support tube 11 is press-fitted and the insertion portion of the bobbin B. The bobbin receiving portion 12 is press-fitted into the upper blade 10 with an annular cutting blade 13 interposed between the bobbin receiving portion 12 and the upper end surface of the large diameter portion of the upper blade 10. The upper end of the bobbin receiving portion 12 is formed in a tapered shape such that its thickness becomes thinner toward the upper side.

The upper blade 10 has a tail thread winding portion formed below the bobbin receiving portion 12, and a seal band 14 is fixed to the tail thread winding portion. The seal band 14 has a surface, such as a hook-and-loop fastener, on which the yarn is easily attached and held.

The support cylinder 11 has a straight portion 11a for mounting a rotor (rotor) 15 of a single spindle driving motor.
And an annular cover portion 11b that is continuous with the upper end and that is curved outward. The straight part 11a constitutes a driving force transmitting part. About one third or more of the upper side of the support cylinder 11 is press-fitted into the lower end of the upper blade 10, and the upper end of the bolster 2 is loosely inserted into almost half of the lower side. The rotor 15 is press-fitted and fixed to the lower outer peripheral surface of the straight portion 11a so as to be able to rotate integrally with the support cylinder 11. The spindle 3 is assembled by press-fitting the bobbin receiving portion 12 with the cutting blade 13 loosely inserted into the upper blade 10 on which the spindle shaft 9 is insert-molded.
After the support cylinder 11 is press-fitted into the lower end of the cylinder 0, the rotor 15 is press-fitted into the support cylinder 11 to complete the process.

A stator (stator) 16 is fixed to the motor housing 4 at a position facing the rotor 15.
The motor housing 4 is composed of a lower member 4a and an upper member 4b, and is formed so as to be vertically splittable into two parts so that the stator 16 can be easily assembled to the motor housing 4 and the inside thereof can be inspected. The lower end of the upper member 4b is fitted and fixed to the portion. A step 17 for positioning when the stator 16 is assembled is formed on the inner surface of the lower member 4a. The lower end of the stator 16 engages with the step 17 and the upper end of the core 16a is connected to the upper member 4b.
Is assembled in the motor housing 4 in a state of engaging with the lower end of the motor housing 4.

The upper member 4b has an insertion hole 1 for the spindle 3.
8 are formed. An annular convex portion 19 is formed on the periphery of the insertion hole 18, and the upper end of the convex portion 19 is formed so as to be located inside the cover portion 11b.

Next, the operation of the above-configured device will be described. The bobbin B is axially positioned with its lower end in contact with the flange 12a of the bobbin receiving portion 12, and is held by the spindle 3 so as to be integrally rotatable by engagement with a locking member 10a provided on the upper portion. When the single spindle driving motor 1 is driven during the operation of the spinning machine, the rotation of the rotor 15 is transmitted to the spindle 3 via the support tube 11 and the spindle 3 is rotated. Is wound up. After full filling, the ring rail (not shown) is rapidly lowered to perform inclined winding, and then the thread is wound around the seal band 14 of the tail thread winding section a predetermined number of times. And
When the full thread (full bobbin) is pulled out, a thread (tail thread) connected to the full thread from the seal band 14 through the recess 12b is pressed against the cutting blade 13 in a tension state and cut.

Since the insertion hole 18 of the spindle 3 into the motor housing 4 is covered by the cover 11b,
Infiltration of fly waste and dust is prevented. This embodiment has the following effects.

(1) Support tube 11 for fixing rotor 15
Is formed by a drawn product, so that the weight is reduced as compared with the case where it is formed by cutting a ferrous material. Accordingly, the required driving force is reduced, the power consumption is reduced, and the size of the single spindle driving motor 1 can be reduced. Further, the manufacturing cost can be reduced.

(2) Since the bobbin receiving portion 12 is also formed of a drawn product, the spindle 3 becomes lighter and the above-mentioned effect is further enhanced. (3) Spindle 3 provided in motor housing 4
A cover 11 b is formed integrally with the support cylinder 11 to prevent fly dust, dust, and the like from entering the motor housing 4 through a gap between the insertion hole 18 for inserting the motor shaft 4 and the spindle 3. Therefore, there is no need to provide a cover part separately, and the number of assembling steps is reduced.

(4) Bobbin receiving portion 12 and upper blade 1
Since the configuration is such that the cutting blade 13 is sandwiched between 0 and 0, the assembling becomes simpler than the conventional fixing configuration of the cutting blade. (5) The support cylinder 11 constituting the driving force transmission unit is pressed into the lower end of the upper blade 10. Therefore, no adhesive or welding is required, and the assembly is simplified.

(Second Embodiment) Next, a second embodiment in which a plurality of weights are embodied in a spindle driven by a common drive belt will be described with reference to FIG. In this embodiment, the shape of the support cylinder constituting the driving force transmitting portion and the state of connection with the upper blade 10 are significantly different from those of the above-described embodiment. The same parts as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

The lower part of the upper blade 10 is formed to have a large diameter, and the lower surface thereof is formed with a concave part 21 in which the upper part of the support cylinder 20 constituting the driving force transmitting part is press-fitted and fixed. Support tube 20
Is formed in a cylindrical shape having a stepped portion in which a large-diameter flange portion 20a is bulged at the lower end, and the flange portion 20a and the concave portion 21 are formed.
And a press-fitting portion 20b. After the support cylinder 20 is formed by deep drawing, the outer peripheral surface of the belt hook 20c is formed into a curved surface by cutting. Then, the upper part of the bolster 2 is loosely inserted inside the support cylinder 20, and the spindle shaft 9 is assembled in a state supported by the bolster 2 via the bearing 8.

This embodiment has the following effects in addition to the effects (2), (4) and (5) of the above-described embodiment. (6) Since the support cylinder 20 is formed of a drawn product and the outer peripheral surface of the belt hooking portion 20c is cut, the weight is reduced as compared with the case where the support tube 20 is formed by cutting iron material. Therefore, the required driving force is reduced, the power consumption is reduced, and the manufacturing cost can be reduced. Also, after the drawing process, a slight cutting of the outer peripheral surface is necessary,
Compared to cutting from iron material, it takes less time and effort.

The embodiment is not limited to the above, and may be embodied as follows, for example. In the first embodiment, the cover 1 is attached to the support cylinder 11.
The cover may be integrally formed on the upper blade 10 side instead of integrally forming 1b.

Instead of using a drawn product as the bobbin receiving portion 12, a conventional bobbin receiving portion having a tail thread winding portion and a cutting blade may be used. ○ The bobbin receiving portion is indispensable for positioning the bobbin B mounted on the spindle 3, but the thread cutting portion (cutting blade) and the seal band 14 are for performing automatic winding after the bobbin exchange. Not required. Accordingly, in the spindle 3 on which the cutting blade 13 is not mounted, as shown in FIG. 2B, the support cylinder 20 may be formed integrally with the bobbin receiving portion 12 as a structure whose diameter changes in three stages. . In this case, the number of parts is reduced and the number of assembling steps is reduced.

○ Thread cutting part (cutting blade) and seal band 1
In the spindle 3 provided with 4, the bobbin receiving part provided with the tail thread winding part and the cutting blade may be fitted to the support cylinder 20 and the bobbin receiving part integrally formed.

Instead of attaching the seal band 14, a knurl may be formed at the tail thread winding portion. As a method of fixing the support cylinders 11 and 20 to the upper blade 10 so as to be integrally rotatable, an adhesive may be used instead of press-fitting, or welding or brazing may be used.

The belt hook 20c may be formed by forging instead of cutting. The belt driving method may be either a method of using a chin pulley to hang the belt by four weights or a driving method using a tangential belt common to many weights.

The inventions (technical ideas) other than those described in the claims which can be grasped from the embodiment will be described below. (1) In the invention according to any one of claims 1 to 4, the driving force transmitting unit is press-fitted into a lower end of the upper blade.

(2) In the invention according to claim 4,
The bobbin receiving portion has a flange at a lower end having a large number of concave portions on a peripheral edge, and a cutting blade is sandwiched between the flange and an end surface of a large diameter portion formed on the upper blade.

[0035]

As described in detail above, according to the first to fourth aspects of the present invention, the weight of the spindle can be reduced and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1A is a partial sectional view of a single spindle drive spindle motor according to a first embodiment, FIG. 1B is a partially cutaway front view of a spindle, and FIG. 1C is a perspective view of a bobbin receiving portion.

2A is a partially cutaway front view of a spindle according to a second embodiment, and FIG. 2B is a partial cross-sectional view of a spindle according to another embodiment.

FIG. 3A is a sectional view of a conventional spindle, and FIG.
1 is a partial cross-sectional view of a conventional spindle unit for driving a single weight.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Single spindle drive motor, 2 ... Bolster as a casing, 3 ... Spindle, 8 ... Bearing, 9 ... Spindle shaft, 1
0: upper blade, 11, 20: support cylinder constituting a driving force transmitting unit, 11a: straight part, 12: bobbin receiving part,
15 ... rotor, 20c ... belt hanging part, B ... bobbin.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takao Nozawa 2-1-1 Toyota-cho, Kariya-shi, Aichi F-term in Toyota Industries Corporation (reference) 4L056 AA02 AA32 BD32 BD42 DA33

Claims (4)

[Claims] 1. A spindle of a spinning machine in which an upper blade to which a bobbin is mounted is fixed above a spindle shaft rotatably supported on a cylindrical casing via a bearing, wherein a driving force is applied to at least the upper blade. Spindle of spinning machine where the transmission of driving force is formed by drawing. 2. The spindle according to claim 1, wherein the spindle is a spindle for driving a single spindle, and the driving force transmitting section is a straight section for attaching a rotor of a single spindle driving motor. 3. The spinning machine according to claim 1, wherein the spindle is a spindle for driving a belt, the driving force transmitting unit includes a belt hook, and an outer peripheral surface of the belt hook is cut. Spindle. 4. The spinning machine according to claim 1, wherein said spindle is in contact with a lower end surface of a mounting bobbin, and a bobbin receiving portion for positioning said bobbin is formed of a drawn product. spindle.