JPH08325861A - Drafting apparatus in spinning machinery - Google Patents

Abstract

PURPOSE: To prevent instability of running by enhancing degree of parallelization of a cradle in a top apron and suppressing shift in a circular direction of the top apron and a bottom apron. CONSTITUTION: This apparatus is composed of a cradle 2 fitting a supporting shaft 21 supported on a supporting arm 11 wherein one end is fixed on a waiting arm 1 on one end and fixing a tensor 22 on the other end, a top apron 3 wound between a middle top roller 31 as a driving roller supported on the supporting shaft 21 and the tensor 22 and a fitting member 4 wherein one end is fixed on an upper wall part 23 of the cradle 2 and the other end is fitted on both side walls 12 of the waiting arm 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning machine which stabilizes the posture of a top apron by locking the other end of a locking member, one end of which is fixed to the upper wall of a cradle, to a weighting arm. Of the draft device.

[0002]

2. Description of the Related Art A conventional drafting device for a spinning machine locks a support shaft A supported by a support arm S, one end of which is fixed to a weighting arm W, at one end, as shown in FIGS. The cradle C has a tensor T fixed to its end, a middle top roller R supported by the support shaft A, and a top apron E wound around the tensor T.

[0003]

In the conventional drafting device for the spinning machine described above, only the support shaft A, which is locked to one end of the cradle C and supports the middle top roller R as the driving roller, is connected to the way. Since the cradle C and the top apron E are supported by being supported by the supporting arm S having one end fixed to the starting arm W, the axis of the middle top roller R is inclined as shown in FIG. There was a problem that the parallelism at the time of mounting the top apron E was poor, and a deviation occurred between the orbiting direction of the top apron E and the orbiting direction of the opposite bottom apron B, and the top apron E was biased and the running became unstable. .

Therefore, the present inventor has focused on the technical idea of the present invention that the other end of the engaging member, one end of which is fixed to the upper wall portion of the cradle, is engaged with the weighting arm, and further research and development are conducted. The parallelism of the cradle of the top apron to stabilize the posture of the top apron, suppress the deviation of the top apron and the bottom apron in the orbiting direction, and prevent the driving from becoming unstable due to the deviation of the top apron. The present invention has been achieved to achieve the object.

[0005]

A draft device for a spinning machine according to the present invention (a first invention according to claim 1) has a support shaft supported at one end by a support arm fixed to a weighting arm at one end. A cradle that is locked and has a tensor fixed to the other end, a top apron that is wound between the drive roller supported by the support shaft and the tensor, and one end fixed to the upper wall of the cradle, And an engaging member whose end is engaged with the weighting arm.

In the draft device for a spinning machine of the present invention (the second invention according to claim 2), in the first invention, the locking member is constituted by a U-shaped member, and the bottom portion is fixed to the cradle. The openings on both ends sandwich the both side walls of the weighting arm.

A draft device for a spinning machine according to a third aspect of the present invention is the drafting device according to the first aspect, wherein the locking member has one end fixed to the cradle and the other end of the weighting arm. It is composed of members inserted into both side walls.

In the draft device for a spinning machine according to the present invention (the fourth invention described in claim 4), in the first invention, the locking member is provided with the drive roller so as to press the top apron toward the bottom apron. It is arranged on the upper wall of the cradle above the weight roller arranged between the tensors.

In the draft device for the spinning machine of the present invention (the fifth invention according to claim 5), in the first invention, one end of the locking member is fixed to the upper surface of the tensor.

A drafting device for a spinning machine according to the present invention (a sixth invention according to claim 6) is the drafting device for a spinning machine according to the first invention, wherein the locking member is fixed to an upper wall portion of the cradle. It is constituted by a part of the spring member inserted between the.

[0011]

In the draft device for the spinning machine according to the first aspect of the present invention, the cradle that supports the drive roller around which the top apron is wound and the tensor is fixed at one end to the weighting arm. The support shaft is supported by and the other end of the locking member, one end of which is fixed to the upper wall portion of the cradle, is locked to the weighting arm by being locked to the other end of the locking arm. There is.

In the draft device for the spinning machine according to the second aspect of the present invention, the cradle supporting the drive roller around which the top apron is wound and the tenser is
A support arm having one end fixed to the weighting arm supports a support shaft, and the U-shaped member has a bottom fixed to the upper wall of the cradle. Are held by the weighting arm by sandwiching both side walls of the weighting arm.

In the draft device for the spinning machine according to the third aspect of the present invention, the cradle for supporting the drive roller around which the top apron is wound and the tensor are:
The support shaft is supported by a support arm whose one end is fixed to the weighting arm, and the other end of the locking member whose one end is fixed to the upper wall portion of the cradle is in both side walls of the weighting arm. It is locked to the weighting arm by being inserted.

In the draft device for the spinning machine according to the fourth aspect of the present invention, the cradle that supports the drive roller around which the top apron is wound and the tensor are:
The support shaft is supported by a support arm having one end fixed to the weighting arm, and one end is fixed to an upper wall portion above the weight roller arranged between the drive roller and the tensor of the cradle. The other end of the locking member is locked to the weighting arm by being locked to the weighting arm.

In the draft device for the spinning machine according to the fifth aspect of the present invention, the cradle that supports the driving roller around which the top apron is wound and the tensor is
The support shaft is supported by the support arm having one end fixed to the weighting arm, and the other end of the locking member having one end fixed to the upper surface of the tensor is locked to the weighting arm. , Locked to the weighting arm.

In the draft device for the spinning machine according to the sixth aspect of the present invention, the cradle that supports the drive roller around which the top apron is wound and the tenser is
A support shaft is supported by a support arm having one end fixed to the weighting arm, and a spring member interposed between the weighting arm having one end fixed to the upper wall of the cradle and the cradle. The other end of the locking member formed by a part is locked to the weighting arm by being locked to the weighting arm.

[0017]

According to the draft device of the spinning machine of the first aspect of the invention, which has the above-described operation, the support shaft is supported by the support arm, and the other end of the locking member is fixed at one end to the upper wall of the cradle. Since it is locked to the weighting arm, the parallelism of the cradle of the top apron is increased, the posture of the top apron is stabilized, the deviation of the top apron and the bottom apron in the circumferential direction is suppressed, and the top apron is biased. This has the effect of preventing the driving from becoming unstable.

In addition to the effect of the first aspect of the invention, the draft device for a spinning machine of the second aspect of the present invention which has the above-described action has a locking member for the U-shaped member whose bottom is fixed to the upper wall of the cradle. Since both end openings of the end hold both side walls of the weighting arm, the parallelism of the cradle of the top apron is further enhanced, the posture of the top apron is stabilized, and the traveling is stabilized.

In addition to the effect of the first aspect of the present invention, in the draft device for the spinning machine of the third aspect of the present invention, one end of the locking member fixed to the upper wall of the cradle has the other end of the weighting arm. Since it is inserted into both side walls of the above, the parallelism of the cradle of the top apron is further enhanced, the posture of the top apron is stabilized, and the running is stabilized.

In addition to the effect of the first aspect of the present invention, in the draft device for the spinning machine of the fourth aspect of the present invention, the engaging member whose other end is engaged with the weighting arm is the drive roller of the cradle. Since one end is fixed to the upper wall portion above the weight roller arranged between the tensor and the tensor, the top apron is effectively prevented from moving due to the reaction force of the weight roller that presses the bottom apron, and This has the effect of further improving parallelism, stabilizing the posture of the top apron, and stabilizing the running.

In addition to the effects of the first aspect of the present invention, the draft device for a spinning machine of the fifth aspect of the present invention has the support shaft supported by the support arm and the top surface of the tenser furthest from the support shaft. Since the locking member is provided in the above, the movement of the top apron is effectively prevented, the parallelism of the cradle is further increased, the posture of the top apron is stabilized, and the traveling is stabilized.

In addition to the effect of the first aspect of the present invention, in the draft device for the spinning machine of the sixth aspect of the present invention, in which the locking member is interposed between the weighting arm and the cradle, Since it is composed of the parts, it is only necessary to change the design of the spring member, and there is no need to provide a locking member separately from the spring member, and the cost can be reduced.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) As shown in FIGS. 1 and 2, a drafting device for a spinning machine according to a first embodiment includes a support shaft 21 supported by a support arm 11 having one end fixed to a weighting arm 1. A cradle 2 that is locked at one end and a tensor 22 is fixed at the other end; a top apron 3 that is wound between the middle top roller 31 as a drive roller supported by the support shaft 21 and the tensor 22; One end is fixed to the upper wall portion 23 of the cradle 2, and the other end is formed on both side walls 12 of the weighting arm 1.
13 and a locking member 4 that is locked to 13.

The draft device of the first embodiment is the draft device of the present invention applied to a two-cone type draft device, and comprises a top apron 3 and a bottom apron 5, and a bottom apron 5
Is wound around a middle bottom roller 51 as a driving roller, and a bottom tenser 52 as a tenser fixed at a predetermined position with both end portions thereof protruding to both sides of the bottom apron 5.

The cradle 2 of the top apron 3 is
The metal member 20 has a U-shaped cross section, and includes a pair of side walls 24, 25 and the upper wall portion 23 connecting the side walls 24, 25.

A tensor 22 common to two weights as a top tensor is fixed to the front portion of the upper wall portion 23 at the central portion, and a tensor gauge adjusting piece 221 made of resin is fitted to the center of the front end, and both left and right sides are fitted. A guide piece 222 for restricting the movement of the top apron 3 in the width direction is arranged in the.

On the upper wall portion 23 of the cradle 2, a hairpin-shaped leaf spring 6 having one end locked to the tensor 22 and bent in the front-rear direction is disposed, and the lower surface of the weighting arm 1 is provided with the leaf plate 6. By pressing the open end of the spring 6, the top apron 3 is moved to the bottom apron 5.
It can be elastically pressed against.

The locking member 4 is a member 40 having a U-shaped cross section.
The lower end bottom portion 41 is fixed to the upper wall portion 23 of the cradle 2, and the inner wall portions of both end opening portions 42 and 43 at the upper end are formed on both side walls 12 and 1 of the weighting arm 1.
3 is sandwiched.

In the drafting device for the spinning machine according to the first embodiment having the above-mentioned structure, when the weighting arm 1 is arranged at the pressing position for pressing the front top roller and the back top roller toward the bottom roller side, the plate The spring 6 engages with the lower surface of the weighting arm 1, and the tensor 22 is urged toward the bottom apron 5 by a proper force.

The tensor 22 and the bottom tenser 5
The gap (gauge) between the two tensors is set by the tensor gauge adjustment piece 221 contacting the upper surface of the bottom tensor 52.

The top apron 3 is pressed against the bottom apron 5 by the pressing force of the middle top roller 31 toward the middle bottom roller 51 and the tension of the top apron 3.

The bottom apron 5 is rotated by the rotation of the middle bottom roller 51, and the top apron 3 is rotated in synchronization with the bottom apron 5 due to the contact pressure between the top apron 3 and the bottom apron 5. Transfer the fiber bundle in cooperation with No. 5.

The cradle 2 supporting the middle top roller 31 around which the top apron 3 is wound and the tensor 22 is supported by the support shaft 21 by the support arm 11 having one end fixed to the weighting arm 1. In addition, both end openings 42, 43 of the upper end of the locking member 4 of the U-shaped member 40 having the lower end bottom portion 41 fixed to the upper wall portion 23 of the cradle 2.
Is held on the weighting arm 1 by sandwiching both side walls 12 and 13 of the weighting arm 1.

Therefore, the support shaft 21 is supported by the support arm 11, and the lower end of the locking member 4 is fixed to the upper wall portion 23 of the cradle 2.
The upper ends of the side walls 12 and 1 of the weighting arm 1
Since 3 is sandwiched, the parallelism of the cradle 2 of the top apron 3 is increased.

Therefore, the posture of the top apron 3 is stabilized, the deviation of the top apron 3 from the bottom apron 5 in the circumferential direction is eliminated, and the deviation of the top apron 3 is suppressed.

In the drafting device for the spinning machine of the first embodiment having the above-mentioned operation, since the parallelism of the cradle 2 is increased and the posture of the top apron 3 is stabilized, the direction in which the top apron 3 goes around the bottom apron 5 is reduced. To prevent the top apron 3 from being biased,
This has the effect of preventing the traveling from becoming unstable.

Further, the draft device of the spinning machine of the first embodiment is
The lower end bottom portion 41 is provided on the upper wall portion 23 of the cradle 2.
Since both end openings 42 and 43 of the upper end of the locking member 4 of the U-shaped member 40 to which the above are fixed hold the both side walls 12 and 13 of the weighting arm 1, the top apron 3 of The parallelism of the cradle 2 is further enhanced, the posture of the top apron is stabilized, and the traveling is stabilized.

(Second Embodiment) As shown in FIGS. 3 and 4, the spinning machine draft device of the second embodiment uses the drive roller as the driving roller for pressing the top apron 3 to the bottom apron 5 side. The first embodiment is that the locking member 4 is disposed on the upper wall portion 23 of the cradle 2 above the weight roller 32 disposed between the middle top roller 31 and the tensor 22. The difference will be mainly described below.

The bottom apron 5 includes a middle bottom roller 51 as a driving roller, the bottom tenser 52 as a tensor fixed at a predetermined position with both end portions thereof protruding to both sides of the bottom apron 1, The middle bottom roller 51 and the bottom ten server 5
It is wound around an intermediate bottom roller 53 disposed between the two.

In the cradle 2, a support shaft 26 is provided through the both side walls 24 and 25 at a position corresponding to the intermediate bottom roller 53 provided in the bottom apron 5. The weight rollers 32 are removably inserted into the free ends of both ends of the support shaft 26 in such a manner that a part of the peripheral surface of the support shaft 26 is in contact with the inner surface of the top apron 3.

The support shaft 26 supporting the weight roller 32 is supported in a cantilever state with respect to the cradle 2. An annular engagement recess is formed as an engagement portion on the inner surface of the weight roller 32, and the engagement recess has a trapezoidal cross-sectional shape.

On the outer peripheral surface of the support shaft 26, a plurality of locking portions serving as restricting portions that can engage with the ends of the engaging portions in the roller axial direction are provided in a protruding manner, and the minimum inner diameter portion of the weight roller 32, The diameter of the portion other than the engaging recess is the maximum outer diameter portion of the support shaft 26,
That is, the diameter is larger than the diameter at the position of the locking portion.

In the draft device for the spinning machine according to the second embodiment having the above-mentioned structure, the side where the top apron 3 and the bottom apron 5 are in pressure contact with each other, that is, the side where the fiber bundle is gripped and conveyed is the slack side. If the distance between the bottom ten server 52 and the middle bottom roller 51 is long, slack is generated in the middle portion and the regulation force of the fiber bundle is weakened. However, since the middle bottom roller 53 is present in the middle portion, the bottom apron is present. Even if the distance between the bottom ten server 52 and the middle bottom roller 51 of 5 is long, slack does not occur.

Further, the top apron 3 is pressed toward the bottom apron 5 by the weight roller 32 arranged at a position corresponding to the intermediate bottom roller 53, so that the regulation force of the fiber bundle is adversely affected. No sagging occurs.

Further, the cradle 2 supporting the middle top roller 31 and the tensor 22 around which the top apron 3 is wound is supported by the supporting arm 11 having one end fixed to the weighting arm 1. And the upper wall portion 2 above the weight roller 32 disposed between the middle top roller 31 and the tensor 22 of the cradle 2.
The other ends 42, 43 of the locking member 4, one end of which is fixed to 3
Is locked to the weighting arm 1 by being locked to the weighting arm 1.

In the draft device for the spinning machine according to the second embodiment having the above-mentioned operation, the engaging member 4 whose other end is engaged with the weighting arm 1 is constituted by the middle top roller 31 of the cradle 2 and the tenser. Since one end is fixed to the upper wall portion 23 above the weight roller 32 arranged between the two 22, even if the reaction force of the weight roller 32 pressing the bottom apron 5 acts, the reaction force is The locking member 4 is disposed in the portion that acts on the cradle 2.
Restrain the movement of.

Therefore, the draft device for the spinning machine of the second embodiment effectively blocks the movement of the top apron 3, further enhances the parallelism of the cradle 2, and stabilizes the posture of the top apron 3. This has the effect of stabilizing the running of the fiber bundle.

(Third Embodiment) A drafting device for a spinning machine according to a third embodiment of the present invention, as shown in FIGS.
The point that one end of is fixed to the upper surface of the front end of the tensor 22 is the difference from the first embodiment, and the difference will be described below.

In the drafting device for the spinning machine of the third embodiment, one end of the cradle 2 supporting the middle top roller 31 around which the top apron 3 is wound and the tensor 22 is fixed to the weighting arm 1. The support shaft 21 is supported by the support arm 11, and the other end 44 of the locking member 4, one end of which is fixed to the upper surface of the front end of the tenser 22, is located inside the side walls 12 and 13 of the weighting arm 1. It is locked to the weighting arm 1 by being inserted.

In the draft device for the spinning machine of the third embodiment having the above-mentioned operation, the support shaft 11 is supported by the support shaft 2 by the support arm 11.
1 is supported and the locking member 4 is disposed on the upper surface of the front end of the tenser 22 farthest from the support shaft 21, so that the cradle 2 is locked at two positions near both ends. The movement and the deviation of the top apron 3 are effectively prevented, the parallelism of the cradle 2 is further enhanced, the posture of the top apron 3 is stabilized, and the traveling is stabilized.

Further, the draft device of the spinning machine of the third embodiment is
Since the other end 44 of the locking member 4 having one end fixed to the upper wall portion 23 of the cradle 2 is inserted and sandwiched in both side walls 12 and 13 of the weighting arm 1, the top apron 3 is provided. The parallelism of the cradle 2 is further enhanced, the posture of the top apron 3 is stabilized, and the traveling is stabilized.

(Fourth Embodiment) As shown in FIGS. 7 and 8, the drafting device for the spinning machine according to the fourth embodiment has the locking member 4
Is constituted by a locking portion 61 formed on a part of the spring member 6 fixed to the upper wall portion 23 of the cradle 2 and interposed between the weighting arm 1 and the cradle 2. This is a difference from the first embodiment, and the difference will be described below.

In the drafting device for the spinning machine of the fourth embodiment, one end of the cradle 2 supporting the middle top roller 31 around which the top apron 3 is wound and the tensor 22 is fixed to the weighting arm 1. The support shaft 21 is supported by the support arm 11, and one end of the cradle 2 is fixed to the upper wall 23 of the cradle 2 and the spring member 6 interposed between the weighting arm 1 and the cradle 2. The other end of the locking member 4 which is partially configured is locked to the weighting arm 1 by being locked to the weighting arm 1.

In the drafting device for the spinning machine of the fourth embodiment having the above-mentioned operation, the locking member 4 is constituted by the part 61 of the spring member which is interposed between the weighting arm 1 and the cradle 2. Therefore, the design change in which the locking portion 61 is formed in a part of the spring member 6 is sufficient, and it is not necessary to provide the locking member 4 separately from the spring member, and the cost can be reduced. Play.

The above-described embodiments are merely examples for explanation, and the present invention is not limited to them. Those skilled in the art will recognize from the claims, the detailed description of the invention and the description of the drawings. Modifications and additions can be made without departing from the technical idea of the present invention.

[Brief description of drawings]

FIG. 1 is a side view showing a first embodiment device of the present invention.

FIG. 2 is a plan view showing the device of the first embodiment.

FIG. 3 is a side view showing a second embodiment device of the present invention.

FIG. 4 is a plan view showing the device of the second embodiment.

FIG. 5 is a side view showing a device according to a third embodiment of the present invention.

FIG. 6 is a partial sectional view showing the device of the third embodiment.

FIG. 7 is a side view showing a device according to a fourth embodiment of the present invention.

FIG. 8 is a partial cross-sectional view showing the device of the fourth embodiment.

FIG. 9 is a plan view showing a conventional device.

FIG. 10 is a plan view showing a conventional device.

FIG. 11 is an explanatory diagram showing a tilt of a middle top roller in a conventional device.

[Explanation of symbols]

 1 Waiting Arm 2 Cradle 3 Top Apron 4 Locking Member 11 Support Arm 12, 13 Sidewall 21 Support Shaft 22 Tensor 31 Middle Top Roller

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[Procedure amendment]

[Submission date] November 15, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

[0003]

In the conventional drafting device for the spinning machine described above, only the support shaft A, which is locked to one end of the cradle C and supports the middle top roller R as the driving roller, is connected to the way. Since the cradle C and the top apron E are supported by being supported by the support arm S having one end fixed to the starting arm W, the shaft of the middle top roller R tilts. Is not parallel to the top apron E, and the bottom apron B is opposed to the opposite direction.
However, there was a problem that driving became unstable due to uneven distribution.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a side view showing a first embodiment device of the present invention.

FIG. 2 is a plan view showing the device of the first embodiment.

FIG. 3 is a side view showing a second embodiment device of the present invention.

FIG. 4 is a plan view showing the device of the second embodiment.

FIG. 5 is a side view showing a device according to a third embodiment of the present invention.

FIG. 6 is a partial sectional view showing the device of the third embodiment.

FIG. 7 is a side view showing a device according to a fourth embodiment of the present invention.

FIG. 8 is a partial cross-sectional view showing the device of the fourth embodiment.

FIG. 9 is a plan view showing a conventional device.

FIG. 10 is a plan view showing a conventional device.

[Explanation of symbols] 1 weighting arm 2 cradle 3 top apron 4 locking member 11 support arm 12, 13 side wall 21 support shaft 22 tenser 31 middle top roller

Claims (6)

[Claims] 1. A cradle in which a supporting shaft supported by a supporting arm whose one end is fixed to a weighting arm is locked at one end and a tensor is fixed to the other end, and a drive roller which is supported by the supporting shaft. A top apron that is wound between the tensor and a locking member that has one end fixed to the upper wall of the cradle and the other end that is locked to the weighting arm. Draft device. 2. The locking member according to claim 1, wherein the locking member is composed of a U-shaped member, a bottom portion is fixed to the cradle, and both end openings sandwich both side walls of the weighting arm. And the draft device of the spinning machine. 3. The locking member according to claim 1, wherein one end of the locking member is fixed to the cradle, and the other end is a member inserted into both side walls of the weighting arm. Draft device for spinning machine. 4. The upper wall of the cradle as set forth in claim 1, wherein the locking member is provided above the weight roller arranged between the drive roller and the tensor to press the top apron toward the bottom apron. A drafting device for a spinning machine, which is arranged in a section. 5. The draft device for a spinning machine according to claim 1, wherein one end of the locking member is fixed to an upper surface of the tensor. 6. The locking member according to claim 1, wherein the locking member is formed of a part of a spring member fixed to an upper wall portion of the cradle and interposed between the weighting arm and the cradle. A drafting device for a spinning machine.