CN109423717B - Drafting device of spinning machine - Google Patents
Drafting device of spinning machine Download PDFInfo
- Publication number
- CN109423717B CN109423717B CN201810939533.4A CN201810939533A CN109423717B CN 109423717 B CN109423717 B CN 109423717B CN 201810939533 A CN201810939533 A CN 201810939533A CN 109423717 B CN109423717 B CN 109423717B
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- shaft
- roller
- bearing
- spinning machine
- bracket
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
- D01H1/20—Driving or stopping arrangements
- D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/74—Rollers or roller bearings
Abstract
A draft device of a spinning machine is provided to easily eliminate the deviation of a screw fastening part between a head shaft and a tail shaft. The draft device of the spinning machine comprises: a draft roller having a head shaft (25) and an end shaft (30), the end shaft (30) being connected to the head shaft (25) by screw fastening; a roller base (14) which supports the draft roller from below; and a drive shaft (19) that outputs the rotational force of the drive motor and is connected to the end shaft (30) via a coupling (27), the drafting device of the spinning machine comprising: a bearing (40) fixed to an intermediate portion of the end shaft (30); and a bracket (50) that supports the bearing (40) at least from below.
Description
Technical Field
The invention relates to a drafting device of a spinning machine.
Background
As a prior art of a draft device of a spinning machine, for example, a draft device of a spinning machine disclosed in patent document 1 is known. In the draft device of the spinning machine, a front lower roller, a middle lower roller and a rear lower roller are respectively driven by two drive motors for the front rollers, two drive motors for the middle rollers and two drive motors for the rear rollers.
For example, the draft device 70 shown in fig. 6 includes a front lower roller 71, a middle lower roller 72, and a rear lower roller 73 as draft rollers. The front lower roller 71, the middle lower roller 72, and the rear lower roller 73 are supported by roller stands 74, 75, respectively. A gear mechanism 76 is provided in the axial direction of the front bottom roller 71 so as to face one roller stand 74. The gear mechanism 76 includes a drive shaft 77 that outputs the driving force of a front roller drive motor (not shown). The front bottom roller 71 has a head axis 78 and an end axis 79. The head shaft 78 and the end shaft 79 are coaxially coupled by screw fastening. The end shaft 79 is connected to the drive shaft 77 via a coupling 80 so as to be coaxial with the drive shaft 77.
Since the head shaft 78 and the end shaft 79 are coupled by screw fastening, the axis of the end shaft 79 and the axis of the head shaft 78 may not coincide and may be eccentric. When the draft device 70 is operated in a state in which the axis of the end shaft 79 and the axis of the head shaft 78 are not aligned and are eccentric, there is a concern that: the center runout occurs in the front bottom roller 71, and the quality of the yarn being drafted is adversely affected.
Therefore, conventionally, the head shaft 79 and the head shaft 78 coupled to each other are supported by the roller stands 74 and 75, and the runout is measured at the free end of the head shaft 79 in a state not coupled to the drive shaft 77. Further, the screw fastening portion between the head shaft 78 and the end shaft 79 is straightened in accordance with the magnitude of the measured runout. Specifically, as shown in fig. 7, during the straightening operation of the screw-fastened portion between the head shaft 78 and the end shaft 79, a load in the radial direction (white arrow F) is applied from above to the end shaft 79 which is not connected to the drive shaft 77. That is, a load is applied between the free end of the end shaft 79 not connected to the drive shaft 77 and the end portion opposite to the free end supported by the roller stand 74. By applying a load to the end shaft 79, the deflection between the head shaft 78 and the end shaft 79 is eliminated.
Patent document 1: japanese patent laid-open No. 2006-2300
In the draft device 70 of the conventional spinning machine shown in fig. 6, during the straightening operation, the runout is measured at the free end of the end shaft 79, and if the runout is larger than the reference value, a load is applied between the free end of the end shaft 79 not connected to the drive shaft 77 and the end supported by the roller stand 74 on the opposite side to the free end, as shown in fig. 7. However, since the operation of removing the free end runout is controlled by the extremely small force adjustment, there are the following problems: it is difficult to apply an appropriate load corresponding to the runout to the screw fastening portion between the zenith shaft 78 and the end shaft 79.
Disclosure of Invention
The present invention has been made in view of the above problems, and an object of the present invention is to provide a draft device of a spinning machine in which a skew of a screw fastening portion between a head shaft and a tail shaft is easily eliminated.
In order to solve the above problem, a draft device of a spinning machine according to the present invention includes: a draft roller having a head shaft and an end shaft, the end shaft being connected to the head shaft by screw fastening; a roller base for supporting the draft roller from below; and a drive shaft that outputs a rotational force of a drive motor and is coupled to the end shaft via a coupling, the draft device of the spinning machine comprising: a bearing fixed to an intermediate portion of the end shaft; and a bracket for supporting the bearing at least from below.
In the present invention, the bracket supports the bearing fixed to the intermediate portion of the end shaft from below. Therefore, the screw fastening portion between the head shaft and the end shaft is located between the bracket supporting the bearing fixed to the intermediate portion of the end shaft and the roller stand. In the straightening work of the screw fastening portion between the head shaft and the end shaft, the runout of the screw fastening portion between the head shaft and the end shaft is measured, and a load corresponding to the runout is applied to the fastening portion (screw fastening portion) between the head shaft and the end shaft from above, whereby an appropriate load corresponding to the runout can be applied to the screw fastening portion between the head shaft and the end shaft, and the deflection of the screw fastening portion between the head shaft and the end shaft can be easily eliminated.
In the above draft device of a spinning machine, the carriage includes: a bearing receiving member that supports the bearing at least from below; and a fixing member fixed to the bearing receiving member and fixing the bearing from above.
In this case, not only the bearing receiving member supports the bearing from below, but also the fixing member that fixes the bearing from above is fixed to the bearing receiving member, and therefore the bearing is fixed from above and below by the bearing receiving member and the fixing member. Therefore, the central oscillation of the draft roller can be reduced as compared with the case where only the bearing fixed to the intermediate portion of the end shaft is supported from below.
In the draft device of the spinning machine, the end shaft may be divided into a drive shaft side shaft portion (a drive shaft side first shaft portion) and a crown shaft side shaft portion (a crown shaft side second shaft portion), and the drive shaft side shaft portion and the crown shaft side shaft portion may be coupled to each other by screwing.
In this case, since the end shaft is divided into the drive shaft-side shaft member and the crown shaft-side shaft member, the bearing can be easily fixed to the intermediate portion of the end shaft as compared with a case where the end shaft is not divided.
In the draft device of the spinning machine, the draft roller may be a front bottom roller.
In this case, the front bottom roller is the one having the highest draft magnification, that is, the highest rotation speed, as compared with the other draft rollers of the spinning machine, and therefore the effect of suppressing the center runout of the front bottom roller is greater than that of the other draft rollers.
In the draft device of the spinning machine, the holder may have the same shape as the roller stand.
In this case, by making the bracket have the same shape as the roller stand, the number of components can be expected to be reduced as compared with the case of using a bracket having a shape different from the roller stand.
According to the present invention, it is possible to provide a draft device of a spinning machine in which a skew of a screw fastening portion between a head shaft and a tail shaft can be easily eliminated.
Drawings
Fig. 1 is a schematic plan view of a draft device of a spinning machine according to an embodiment of the present invention.
Fig. 2 is a perspective view of a main part of a draft device of a spinning machine according to an embodiment of the present invention.
Fig. 3 is a plan view of a main part showing the connection of the front bottom roller, the end shaft, and the drive shaft.
Fig. 4 is a view taken along line a-a of fig. 1.
Fig. 5 is an explanatory diagram of the straightening operation of the draft rollers in the draft device.
Fig. 6 is a schematic plan view of a draft device of a conventional spinning machine.
Fig. 7 is an explanatory diagram of the straightening operation of the draft rollers in the conventional draft device.
Description of the figures
10. 70 … drafting device; 11. 71 … front bottom roller; 12. 72 … middle and lower rollers; 13. 73 … rear bottom roller; 14. 15, 74, 75 … roller stands; 19. 20, 21, 77 … drive shafts; 22 … front roller driving motor; 23 … middle roller drive motor; 24 … back roller drive motor; 25. 43, 46, 78 … zenith axis; 27. 45, 48, 80 … couplings; 30. 44, 47, 79 … end shafts; 31 … first shaft member; 32 … second shaft member; 40. 41, 42 … bearings; a 50 … bracket; 51 … a bracket body component; 52 … bearing receiving member; 53 … securing element; f … load.
Detailed Description
Hereinafter, a draft device of a spinning machine according to an embodiment will be described with reference to the drawings. In the present embodiment, a description will be given of a drafting device of a ring spinning frame as a spinning machine. The drafting device of the invention is provided with a pair of drafting devices along the length direction of the machine table of the ring spinning frame, and is of a three-wire structure with three drafting rollers.
As shown in fig. 1, the draft device 10 includes a front bottom roller 11, a middle bottom roller 12, and a rear bottom roller 13. The front lower roller 11, the middle lower roller 12, and the rear lower roller 13 correspond to draft rollers. The draft device 10 includes roller stands 14 and 15 for supporting draft rollers.
Roller stands 14, 15 support the front bottom roller 11 from below. The roller stand 14 supports a portion of the front bottom roller 11 near one end portion, and the roller stand 15 supports the other end portion. Support brackets (not shown) are fixed to the roller stands 14 and 15, respectively, and support the middle and lower rollers 12 and the rear lower roller 13. The support bracket can be adjusted in position in the front-rear direction (direction orthogonal to the axial direction of the draft rollers).
As shown in fig. 2, the roller stands 14 and 15 are supported by a pair of draw bars 17 supported by a base 16. The draft rod 17 extends over the entire length of the machine bed. In fig. 2, only one base 16 is shown, but the draft device 10 may include a plurality of bases 16. In fig. 2, only the roller stand 14 is shown, and the middle bottom roller 12 and the rear bottom roller 13 are not shown, except for the roller stand 15, and are omitted.
The middle and lower rollers 12 are provided with aprons (apron, not shown). Further, a front top roller (not shown) corresponding to the front bottom roller 11 is provided. A middle-upper roller (not shown) corresponding to the middle-lower roller 12 is provided, and a apron (not shown) is provided on the middle-upper roller. A rear upper roller (not shown) corresponding to the rear lower roller 13 is provided.
A gear mechanism 18 is provided on one end side (left side in fig. 1) of the front bottom roller 11, the middle bottom roller 12, and the rear bottom roller 13. The gear mechanism 18 includes a plurality of gear trains (not shown) and drive shafts 19, 20, 21 connected to the front bottom roller 11, the middle bottom roller 12, and the rear bottom roller 13, respectively.
In the vicinity of the gear mechanism 18, a front roller drive motor 22 as a drive source of the front bottom rollers 11, a middle roller drive motor 24 as a drive source of the middle bottom rollers 12, and a back roller drive motor 23 as a drive source of the back bottom rollers 13 are disposed. The rotational force of the front roller drive motor 22 is output to the drive shaft 19 via the gear train for the front roller in the gear mechanism 18. The rotational force of the middle roller drive motor 24 is output to the drive shaft 20 via the gear train for the middle roller, and the rotational force of the rear roller drive motor 23 is output to the drive shaft 21 via the gear train for the rear roller.
The front bottom roller 11 has a head shaft 25 and an end shaft 30, wherein the end shaft 30 is coaxially coupled to the head shaft 25 by screw fastening. A head axis 25 extends between the roller stands 14, 15. As shown in fig. 3, a female screw hole 26 having a female screw is formed in an end portion of the crown shaft 25 on the side of the end shaft 30.
The end shaft 30 of the present embodiment is composed of a first shaft member 31 and a second shaft member 32. The first shaft member 31 is coupled to the drive shaft 19 via the coupling 27, and the second shaft member 32 is coupled to the zenith shaft 25. The first shaft member 31 includes a first shaft body 33 and a small diameter shaft 34, and the small diameter shaft 34 is provided at an end of the first shaft body 33 on the second shaft member 32 side and has a smaller diameter than the first shaft body 33. The small-diameter shaft portion 34 has an external thread portion 35 formed with an external thread at a distal end portion thereof.
The second shaft member 32 has a second shaft body portion 36. A female screw hole 37 having a female screw is formed in an end portion of the second shaft body portion 36 on the first shaft member 31 side. The first shaft member 31 and the second shaft member 32 are coaxially coupled by screwing the male screw portion 35 of the first shaft member 31 into the female screw hole 37. A small diameter shaft portion 38 having a smaller diameter than the second shaft body portion 36 is formed at the end portion of the second shaft body portion 36 on the side of the upper shaft 25. The small-diameter shaft portion 38 has an externally threaded portion 39 formed with an external thread. The male screw portion 39 is screwed into the female screw hole 26 formed in the head pin 25, whereby the head pin 30 and the head pin 25 are coaxially coupled.
In a state where the first shaft member 31 and the second shaft member 32 are coupled, the small diameter shaft portion 34 of the first shaft member 31 corresponds to an intermediate portion of the end shaft 30. A bearing 40 is fixed to the small diameter shaft portion 34. The bearing 40 is a needle bearing. Similarly, a bearing 41 having the same structure as the bearing 40 is fixed to the small diameter shaft portion 38 of the second shaft member 32. Further, a bearing 42 (see fig. 1) having the same structure as the bearings 40 and 41 is fixed to the other end of the head shaft 25 supported by the roller mount 15.
The middle bottom roller 12 has a top shaft 43 and an end shaft 44, and the end shaft 44 is coaxially coupled to the top shaft 43 by screw fastening (see fig. 1). A head axis 43 extends between the roller stands 14, 15. The end shaft 44 is not divided, but is coupled to the drive shaft 20 via a coupling 45. The rear bottom roller 13 has a head shaft 46 and an end shaft 47, and the end shaft 47 is coaxially coupled to the head shaft 46 by screw fastening (see fig. 1). A head axis 46 extends between the roller stands 14, 15. The end shaft 47 is not divided, but is coupled to the drive shaft 21 via a coupling 48. A partition plate 49 is provided between the gear mechanism 18 and the roller stand 14.
The draft device 10 of the present embodiment includes a bracket 50, and the bracket 50 vertically supports the bearing 40 fixed to the intermediate portion of the end shaft 30. As shown in fig. 2 and 4, the bracket 50 includes a pair of bracket body members 51, a bearing receiving member 52, and a fixing member 53. In fig. 4, only one carriage body member 51 is illustrated.
The carriage body member 51 is an elongated plate extending between the pair of front bottom rollers 11. An arc groove 54 fitted to the draft rod 17 is formed in the lower edge of the bracket main body member 51. The bracket main body member 51 extends obliquely downward from the vicinity of the arc groove 54 toward the front bottom roller 11. A front end portion 55 of the carriage body member 51 near the front bottom roller 11 is a portion to which the bearing receiving member 52 is fixed by fastening a bolt 56. Cylindrical members 57 are attached to the pair of draft rods 17, respectively. The pair of bracket main body members 51 are fixed to the cylindrical member 57 by fastening bolts 58 so as to sandwich the cylindrical member 57 (see fig. 2). The cylindrical member 57 may be divided into two parts in the radial direction.
The bearing receiving member 52 is a member bent into a substantially L-shape, and one end portion of the bearing receiving member 52 is sandwiched between the distal end portions 55 of the pair of bracket body members 51 and is fixed to the pair of bracket body members 51 by fastening bolts 56. The other end of the bearing receiving member 52 has a bearing surface 59 having an arc-shaped cross section. The bearing surface 59 supports the bearing 40 from below.
The fixing member 53 is fixed to the bearing receiving member 52 by fastening the bolt 60, and the bearing 40 is fixed from above by the fixing member 53. The fixing member 53 includes a pair of seats 61 fixed to the bearing receiving member 52, and a bent portion 62 connecting the pair of seats 61. The curved portion 62 is curved in an arc shape. The fixing member 53 is fixed to the bearing receiving member 52, and thereby the bracket 50 fixes the bearing 40 from the vertical direction.
Next, the straightening operation of the screw-fastened portion between the head shaft 25 and the end shaft 30 of the present embodiment will be described. The operation of straightening the screw-fastened portion between the head shaft 25 and the end shaft 30 is performed at the time of assembling the draft device 10 or at the time of maintenance and inspection of the draft device 10. As shown in fig. 5 (a), first, the operator supports the front bottom roller 11 by the roller stands 14 and 15 of the draft device 10.
Next, as shown in fig. 5 (b), the operator connects the front bottom roller 11 and the drive shaft 19 via the coupling 27. By coupling the front bottom roller 11 and the drive shaft 19 via the coupling 27, the positions of the end shaft 30 and the end of the drive shaft 19 are aligned.
Next, as shown in fig. 5 (c), the worker attaches the bracket 50 and causes the bearing receiving member 52 of the bracket 50 to support the bearing 40 of the front bottom roller 11. In the present embodiment, the fixing member 53 is fixed to the bearing receiving member 52 by bolt fastening, and the bearing 40 is fixed from the vertical direction by the bearing receiving member 52 and the fixing member 53.
Next, the worker removes the coupling 27. The operator rotates the front bottom roller 11 with the coupling 27 removed, and measures the runout of the screw-fastened portion between the top shaft 25 and the end shaft 30 in the roller stand 14 of the support bearing 41. Further, as shown in fig. 5 d, the operator applies a downward load (white arrow F) corresponding to the magnitude of the runout measured from above the bearing 41 to the front bottom roller 11 supported by the bearings 40 and 42 at both ends by using the bracket 50 and the roller bed 15. By applying the downward load, the deflection of the screw fastening portion between the top shaft 25 and the end shaft 30 is eliminated, and the center runout when rotating the front bottom roller 11 is prevented. Next, as shown in fig. 5 (e), the operator connects the front bottom roller 11 to the drive shaft 19 via the coupling 27. The front bottom roller 11 is connected to the drive shaft 19, and the straightening operation of the front bottom roller 11 is completed.
The draft device 10 according to the present embodiment has the following operational advantages.
(1) The bracket 50 supports the bearing 40 fixed to the intermediate portion of the end shaft 30 from below. Therefore, a fastening portion (screw fastening portion) between the head shaft 25 and the end shaft 30 in the front bottom roller 11 is positioned between the carrier 50 supporting the bearing 40 fixed to the middle portion of the end shaft 30 and the roller stand 15. In the straightening work of the screw-fastened portion between the top shaft 25 and the end shaft 30, the runout of the fastened portion (screw-fastened portion) between the top shaft 25 and the end shaft 30 is measured, and a load corresponding to the runout is applied to the screw-fastened portion between the top shaft 25 and the end shaft 30 from above, whereby an appropriate load corresponding to the runout can be applied to the screw-fastened portion between the top shaft 25 and the end shaft 30, and the deflection of the screw-fastened portion between the top shaft 25 and the end shaft 30 can be easily eliminated.
(2) Since the bearing 40 is supported by the bearing receiving member 52 from below and the fixing member 53 is fixed to the bearing receiving member 52, the bearing 40 is fixed in the vertical direction by the bearing receiving member 52 and the fixing member 53. Therefore, as compared with the case where only the bearing 40 fixed to the intermediate portion of the end shaft 30 is supported from below, the center runout of the front bottom roller 11 due to the eccentricity between the drive shaft 19 and the front bottom roller 11 can be reduced.
(3) The end shaft 30 is divided into a first shaft member 31 as a drive shaft side shaft portion and a second shaft member 32 as an antenna shaft side shaft portion. Therefore, the mounting of the bearing 40 to the end shaft 30 becomes easier as compared with the case where the end shaft is not divided.
(4) The rotation speed of the front bottom roller 11, which is a draft roller, is highest compared with the middle bottom roller 12 and the rear bottom roller 13, which are other draft rollers in the draft device 10. This makes the effect of suppressing the center runout of the front bottom roller 11 greater than that of the other draft rollers.
The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention, and for example, the following modifications are possible.
In the above-described embodiment, the bearing fixed to the intermediate portion of the end shaft is supported by the bracket, but the present invention is not limited to this. For example, a bracket having the same shape as the roller stand may be used. In this case, the number of components can be reduced as compared with the bracket of the embodiment. Therefore, the manufacturing cost of the draft device can be reduced.
In the above embodiment, the bracket fixes the bearing fixed to the intermediate portion of the end shaft from the up-down direction, but the present invention is not limited thereto. The bearing fixed to the intermediate portion of the end shaft may be supported at least from below. For example, in the case where the roller stand is used as a bracket for supporting at least the bearing fixed to the intermediate portion of the end shaft from below, the bearing fixed to the intermediate portion of the end shaft is supported only by the roller stand from below. Even in this case, an appropriate load corresponding to the runout can be applied to the screw-fastened portion between the top shaft 25 and the end shaft 30.
In the above-described embodiment, the stub shaft is divided into the drive shaft-side shaft portion and the zenith shaft-side shaft portion, but the present invention is not limited to this. The bearing may be fixed to an intermediate portion of the end shaft as one end shaft that is not divided.
In the above-described embodiment, the front bottom roller as the draft roller is an application object of the invention, but the invention is not limited to the front bottom roller, and the middle bottom roller and the rear bottom roller may be an application object of the invention.
In the above-described embodiment, the front roller drive motor 22, the middle roller drive motor 24, and the rear roller drive motor 23 are provided in the front bottom roller 11, the middle bottom roller 12, and the rear bottom roller 13, respectively, but the present invention may be applied to a draft device of a drive type in which the drive force of a separate motor is transmitted to the front bottom roller 11, the middle bottom roller 12, and the rear bottom roller 13 via a transmission mechanism.
Claims (9)
1. A draft device of a spinning machine, comprising:
a draft roller having a head shaft and an end shaft, the end shaft being connected to the head shaft by screw fastening;
a plurality of roller stands supporting the head axis from below, the head axis extending between the plurality of roller stands; and
a drive shaft which outputs a rotational force of a drive motor and is coupled to the end shaft via a coupling,
the drafting device of the spinning machine is characterized in that,
the end of the end shaft on the side of the antenna shaft is supported by a first roller stand (14) closest to the drive shaft among the plurality of roller stands,
the draft device of the spinning machine comprises:
an end shaft bearing (40) fixed to an intermediate portion of the end shaft; and
a bracket (50) that supports the end shaft bearing (40) at least from below,
the plurality of roller stands comprise a first roller stand (14) supported and arranged on the bracket side of the head axis and a second roller stand (15) supported and arranged on the opposite side of the head axis from the bracket,
a first day shaft bearing (41) is fixed to a screw fastening portion between the day shaft (25) and the end shaft (30),
a second head bearing (42) is fixed to an end of the head shaft (25) on the side supported by the second roller bearing (15),
a downward load corresponding to the size of the runout measured from above the first crown axis bearing (41) is applied to the draft roller supported by the end axis bearing (40) and the second crown axis bearing (42) by the bracket and the second roller stand (15), and by applying the downward load, the deflection of the screw fastening portion between the crown axis and the end axis is eliminated, and the central runout when the draft roller is rotated is prevented.
2. Drafting device of spinning machine according to claim 1,
the bracket is provided with:
a bearing receiving member that supports the end shaft bearing at least from below; and
and a fixing member that is fixed to the bearing receiving member and fixes the end shaft bearing (40) from above.
3. Drafting device of spinning machine according to claim 1 or 2,
the end shaft is divided into a drive shaft side first shaft portion and a zenith shaft side second shaft portion,
the drive shaft-side first shaft portion and the zenith shaft-side second shaft portion are coupled by screw fastening.
4. Drafting device of spinning machine according to claim 1 or 2,
the drafting roller is a front lower roller.
5. Drawing device of spinning machine according to claim 3,
the drafting roller is a front lower roller.
6. Drafting device of spinning machine according to claim 1 or 2,
the bracket is in the same shape as the roller stand.
7. Drafting device of spinning machine according to claim 3,
the bracket is in the same shape as the roller stand.
8. Drawing device of spinning machine according to claim 4,
the bracket is in the same shape as the roller stand.
9. Drafting device of spinning machine according to claim 5,
the bracket is in the same shape as the roller stand.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-169090 | 2017-09-04 | ||
| JP2017169090A JP7257099B2 (en) | 2017-09-04 | 2017-09-04 | Draft device in spinning machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109423717A CN109423717A (en) | 2019-03-05 |
| CN109423717B true CN109423717B (en) | 2022-07-05 |
Family
ID=65514660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810939533.4A Active CN109423717B (en) | 2017-09-04 | 2018-08-17 | Drafting device of spinning machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7257099B2 (en) |
| CN (1) | CN109423717B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10273832A (en) * | 1997-03-28 | 1998-10-13 | Toyota Autom Loom Works Ltd | Draft apparatus for spinning machine |
| JP2006002300A (en) * | 2004-06-18 | 2006-01-05 | Toyota Industries Corp | Method for detecting abnormality of drafting apparatus in spinning machinery |
| JP4670522B2 (en) * | 2005-07-19 | 2011-04-13 | 株式会社豊田自動織機 | Draft device in spinning machine |
| JP4534887B2 (en) * | 2005-07-19 | 2010-09-01 | 株式会社豊田自動織機 | Method and apparatus for controlling draft device in spinning machine |
| RU2467102C1 (en) * | 2011-06-29 | 2012-11-20 | Государственное образовательное учреждение высшего профессионального образования "Ивановская государственная текстильная академия" (ИГТА) | Drafting device of spinning machine |
| DE102012021399A1 (en) * | 2012-10-31 | 2014-04-30 | Rotorcraft Ag | Drafting device for ring spinning machines, has pair of output rollers with output pressure roller and associated sub-cylinder, where compression zone is downstream to pair of output rollers |
| JP2016180198A (en) * | 2015-03-25 | 2016-10-13 | 村田機械株式会社 | Draft device and spinning machine |
-
2017
- 2017-09-04 JP JP2017169090A patent/JP7257099B2/en active Active
-
2018
- 2018-08-17 CN CN201810939533.4A patent/CN109423717B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109423717A (en) | 2019-03-05 |
| JP2019044300A (en) | 2019-03-22 |
| JP7257099B2 (en) | 2023-04-13 |
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