JPS639593Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is based on the invention in which the spread fibers that have passed through the fiber supply channel of the fiber supply unit are transferred to the surface of a pair of twisting rollers that are arranged adjacent to each other and rotate in the same direction. This invention relates to a locking device for a fiber supply unit in an adsorption/twisting spinning apparatus in which fiber is spun as a yarn by being subjected to a twisting action while being adsorbed by at least one of the twisting rollers in a wedge-shaped space formed by the present invention.

(Prior Art) Conventionally, a spinning device shown in FIG. 10 has been proposed as this type of suction twisting spinning device. In this conventional device, a non-porous roller 1 and a perforated roller having a large number of suction holes 2a, which are rotated in the same direction, are placed adjacent to each other, and fibers are opened by a fiber opening unit (not shown) and formed by the rollers 1 and 2. The fibers are guided and discharged into a wedge-shaped space R through a fiber supply duct 3. A suction duct 4 is disposed inside the porous roller 2, and its suction port 4a is disposed on the wedge-shaped space R side. Therefore, the spread fibers supplied into the wedge-shaped space R are attracted onto the outer peripheral surface of the porous roller 2 corresponding to the suction port 4a, and become a fiber bundle S. This fiber bundle S is carried by both the rollers 1,
The yarn is pulled out from inside the wedge-shaped space R in the longitudinal direction of the shafts of both rollers 1 and 2 while being subjected to a twisting action by the yarn rollers 2, and wound into a thread (not shown) in a package (not shown).

Generally, in such a spinning device, when a yarn breakage occurs, it is necessary to reinsert the yarn end pulled back from the package into the wedge-shaped space R and splice the yarn. However, since the yarn breakage detection is delayed slightly from the actual yarn breakage, spread fibers corresponding to this delay are deposited in the wedge-shaped space R after the yarn breakage. The presence of such deposited fibers becomes a major hindrance when splicing yarns. Therefore, it is necessary to remove the accumulated fibers in the wedge-shaped space R after yarn breakage, but in the conventional device, both rollers 1,
It is extremely difficult to remove the accumulated fibers within the space R that is elongated in the axial direction of No. 2.

In view of this, an adsorption-twisting spinning device that attempts to solve these problems is disclosed in Japanese Patent Application Laid-open No. 71423/1983. In this conventional device, as shown in FIG.
Support plates 8 and 9 that rotatably support both ends of are fitted and supported in both fitting grooves 5a and 6a, respectively. 10 is a belt for driving the rollers. One support plate 9 is rotatably supported by a shaft 11 installed in the fitting groove 6a, and the other support plate 8 is pressed into the fitting groove 5a by appropriate elastic biasing means. . Therefore, when the thread breaks, the non-perforated roller 1 is moved upward about the shaft 11 as shown by the chain line in FIG. 11, thereby opening the wedge-shaped space R and removing the accumulated fibers.

(Problems to be solved by the invention) However, this conventional device has the following problems. Normally, in order to properly impart the twisting effect of the rotation of the non-perforated roller 1 and the perforated roller 2 to the fiber bundle S, it is desirable to make the gap between the two rollers 1 and 2 as small as possible. However, in the conventional device, since the non-perforated roller 1 is configured to be tiltable, the tilting mechanism is required to have extremely high accuracy in order to appropriately set the gap between the rollers 1 and 2, and is difficult to manufacture.

Furthermore, in this conventional device, since the non-porous roller 1 is held in a predetermined position by an elastic biasing means, the roller 1 tends to cause slight vibrations during operation.
Adversely affects spinning action.

Structure of the invention (means for solving the problem) In order to solve the above problem, in the present invention, the spread fibers that have passed through the fiber supply channel of the fiber supply unit are arranged adjacently and rotated in the same direction. In the adsorption-twisting spinning device, the fibers are spun into yarn by being subjected to a twisting action while being adsorbed to at least one of the twisting rollers in a wedge-shaped space formed by the surfaces of a pair of twisting rollers. A supply unit is arranged movably between a spinning position close to the wedge-shaped space and a non-spinning position that opens the front surface of the wedge-shaped space, and the fiber supply unit is arranged and held at the spinning position. In addition to providing a locking mechanism, a contact prevention mechanism for regulating the closest distance between the two twisting rollers and the fiber supply unit to a predetermined interval is provided.

(Function) That is, by rotating or sliding the fiber supply unit away from both the twisting rollers, the front surface of the wedge-shaped space formed between the two rollers is opened, and the accumulated fibers within the wedge-shaped space are easily removed. be able to. Further, when the fiber supply unit is moved from the non-spinning position to the spinning position, the unit is stopped by the contact prevention mechanism, and there is no risk that the fiber supply unit will come into contact with both twisting rollers. Therefore, damage to the outer circumferential surfaces of both twisting rollers due to contact between the fiber supply unit and both twisting rollers is avoided, and the twisting action of both twisting rollers is performed satisfactorily. In addition, by moving the fiber supply unit side, relative movement of the rollers, which tends to have a negative effect on the spinning action, is avoided, so an elastic mechanism is used as a locking mechanism to place and hold the fiber supply unit in the spinning position. Even when the biasing means is used, fine vibrations on the fiber supply unit side that tend to occur during operation do not have any adverse effect on the spinning action, and high quality spun yarn can be obtained.

(Example) Hereinafter, examples 1 to 7 that embody the present invention will be described.
This will be explained based on the diagram. In this embodiment, a fiber-spreading roller having a metallic wire wound around its surface is used as a fiber-spreading mechanism incorporated in the fiber supply unit.

Reference numeral 21 denotes a cylindrical suction pipe extending vertically through the support base 22, and on the upper side of the support base 22, a suction port 21a in the form of a slot with a long hole is provided in the vertical direction on the outer peripheral surface of the pipe 21. ing. As shown in FIG. 4, a cylindrical bearing 23 is provided at the upper end of the suction pipe 21.
is fitted and fixed so as to hang downward, and a shaft 24 is rotatably supported by the bearing 23 so as to project upward. A hollow twisting roller 25 having a large number of suction holes 25a is fitted and fixed to the upper end of the coaxial 24 via its mounting cylinder portion 25b, and its outer circumferential portion is close to the outer circumferential surface of the suction pipe 21. It is formed to cover the suction port 21a.

A support cylinder 26 is installed adjacent to the suction pipe 21 and extends through the support base 22, and a bearing 27 similar to the bearing 23 is fitted and fixed to the upper end of the cylinder 26 so as to hang downward. At the same time, a shaft 28 is rotatably supported at its upper end so as to protrude upward. A hollow twisting roller 29 is fitted and fixed to the upper end of the coaxial 28 via its mounting cylinder 29a, and the outer peripheral surfaces of both twisting rollers 25 and 29 are spaced apart from each other by a very small distance in the vicinity of the suction port 21a. They are arranged so that they are close to each other.

Then, the mounting cylinder portion 2 of both twisting rollers 25, 29
A drive belt 30 is pressed against the outer peripheral surfaces of 5b and 29a, and as shown in FIG.
Both twisting rollers 25,
29 are rotated in the direction of arrow Q shown in the figure, that is, in the same direction.

In FIG. 1, to the right of both twisting rollers 25 and 29 is a drive shaft 31 that rotates at high speed and a support pipe 3.
2 are arranged parallel to each other, and the same pipe 32
A fiber supply unit 33 is rotatably fitted by sandwiching the pipe 32 between its main body 34 and a mounting plate 35. A grooved feed roller 36 is rotatably housed in the main body 34, and a fiber opening roller 3 is disposed near the feed roller 36.
7 is rotatably housed. A presser 39 rotatably supported by a shaft 38 is pressed onto the feed roller 36 by a spring 40, and an introduction member 41 for introducing the sliver is attached to the lower surface of the base end of the presser 39. There is.

1 and 5, a drive shaft 42 which rotates at a low speed is inserted through the support pipe 32, and as shown in Fig. 5, a notch 32a is formed in the upper part of the support pipe 32 on the right side of the main body 34, and a gear 43 is fixed to the drive shaft 42 at a position corresponding to the notch 32a. An intermediate gear 44 which is rotatably supported on the right side of the main body 34 is meshed with the gear 43, and a gear 46 which is operatively connected to the feed roller 36 via an electromagnetic clutch 45 which is released by a detection signal from a yarn breakage detection device (not shown) is meshed with the gear 45.

Further, as shown in FIGS. 1 and 5, a metal drive roller 47 is attached to the drive shaft 31 on the right side of the main body 34.
is fixed thereto, and a metal roller 48 is also disposed on the right side of the main body 34 and coaxially connected to the opening roller 37. Both rollers 47 and 48 are equipped with rubber elastic. A driven roller 49 having a drive roller 49 is pressed against the drive roller 49 . Therefore, the drive shafts 31, 4
2 is driven, the feed roller 36 is rotated at a low speed, and the opening roller 37 is rotated at a high speed in the same direction. The fibers are supplied to the opening roller 37 at a high speed. The fibers opened by the rollers 37 are discharged from the main body 34 into a fiber supply duct 51 extending toward the twisting rollers 25 and 29.

As shown in FIG. 5, a ring 52 is fastened and fixed to the support pipe 32 between the main body 34 and the notch 32a, and both ends of the ring 52 are hooked between the ring 52 and the main body 34. A torsion spring 53 is interposed to urge the fiber supply unit 33 to rotate in a direction away from the twisting rollers 25, 29. Also, on the left side of the main body 34, the support pipe 3
A cam 54 is tightened and fixed to 2, and
A latch lever 55 is rotatably supported by a shaft 56 on the upper side thereof, and a torsion spring 57 biases the distal end side latch portion 55a of the latch lever 55 to rotate toward the cam 54 side. There is. First and second engagement grooves 54a and 54b are provided on the cam 54, and as shown in FIG. When the fiber supply duct 51 is being twisted, the wedge-shaped tip of the fiber supply duct 51 is extended into the wedge-shaped space R formed between the two twisting rollers 25 and 29 as shown in FIG. When the stop portion 55a is engaged with the second engagement groove 54b, the fiber supply unit 33 is separated from both twisting rollers 25, 29 to open the wedge-shaped space R. That is, the torsion spring 5
3. A locking mechanism is constructed by the cam 54 and the locking lever 55 to position and hold the fiber supply unit 33 in the spinning position and the non-spinning position. In addition,
The latch lever 55 is attached to the main body 3 as shown in FIGS.
4, the lower end surface of the cover 58 attached to the left side surface of the
The amount of rotation is regulated by a regulating protrusion 59 protruding from the left side surface of the main body 34 in the vicinity of the cam 54 .

As shown in Figures 1 and 3, both twisting rollers 25, 2
A regulating bolt 60 is screwed onto the support stand 22 on the side of the fiber supply unit 33 between 9 and 9, and is tightened and fixed with a nut 61 so that its position can be adjusted in the vertical direction. The same Bold 60 is the fiber supply duct 5
The duct 5 can come into contact with the lower end surface of the duct 5.
1 and the outer peripheral surfaces of both twisting rollers 25 and 29 are prevented from coming into contact with each other.

Now, as shown in FIG. 1, the latching portion 55a of the latching lever 55 is engaged with the first engagement groove 54a, and is urged to rotate clockwise around the support pipe by the torsion spring 53. The fiber supply unit 33 is arranged and held at the spinning position shown in FIGS. 1 and 2 by the engagement action and rotational biasing action,
The driving roller 47 and the driven roller 49 are elastically pressed together. Therefore, the rotation of the drive shaft 31 is transmitted to the opening roller 37 via the drive roller 47, driven roller 49, and roller 48, and the roller 37 is rotated at high speed. The spread fibers opened by the high-speed rotation of the opening roller 37 and released into the fiber supply duct 51 ride on the airflow sucked into the suction port 21a of the suction pipe 21 and are twisted in a manner corresponding to the suction port 21a. It is attracted to the outer peripheral surface of the roller 25. The adsorbed fiber bundle S is twisted by the frictional action of both twisting rollers 25 and 29, and is pulled upward by a pair of pull-out rollers 62 along the line of closest approach between both rollers 25 and 29, and is then twisted into a yarn Y. Then, it is wound up into a package 64 by a winding roller 63.

When thread breakage occurs for some reason and a thread breakage detection signal is output from a thread breakage detection device (not shown), the electromagnetic clutch 45 is released from the operational connection.
Rotation of the feed roller 36 is stopped. Therefore, the supply of the sliver 50 from the roller 36 to the opening roller 37 is stopped, and the release of the opened fibers into the wedge-shaped space R is stopped, but the rotation of the feed roller 36 is stopped due to the delay in yarn breakage detection. Slightly delayed,
The amount of spread fibers corresponding to this delay time is distributed in the wedge-shaped space R.
is released and deposited within. These accumulated fibers become a hindrance when the yarn end is reinserted into the wedge-shaped space R and spliced. Therefore, if the latch lever 55 is rotated clockwise in FIG. 1 against the torsion spring 57, the upper edge of the distal end side of the lever 55 comes into contact with the regulating protrusion 59 and the latch part 55a. The engagement with the first engagement groove 54a is released, and due to the action of the torsion spring 53, the entire fiber supply unit 33 moves around the support pipe 32 and both twisting rollers 2.
5 and 29 in a direction away from each other. Then, as shown in FIG. 6, when the hook portion 55a engages with the second engagement groove 54b, the fiber supply unit 33 is held in the non-spinning position shown in the figure by the action of the torsion spring 53. Therefore, the wedge-shaped space R, which was almost closed by the tip of the fiber supply duct 51, is opened, and the accumulated fibers in the wedge-shaped space R can be easily removed.

After the removal of the accumulated fibers in the wedge-shaped space R is completed, if the fiber supply unit 33 is urged to rotate toward both twisting rollers 25 and 29 against the torsion spring 53, the driving roller 47 and the driven roller 49 are rotated. At the same time that they are elastically connected again, the latching portion 55a of the latching lever 55 engages with the first engagement groove 54a again, and the fiber supply unit 33 is placed and held in the spinning position shown in FIGS. 1 and 2. When the fiber supply unit 33 is rotated from the non-spinning position to the spinning position, the engaging portion 55a and the first engaging groove 54a can be engaged only in the direction in which the torsion spring 53 is biased. The stop portion 55a easily passes over the first engagement groove 54a. Also, driven roller 49
has elasticity, the fiber supply unit 33
Even if the driven roller 49 and the driving roller 47 are brought together by the rotation of . but,
In this embodiment, both twisting rollers 25,
Since the regulating bolt 60 is screwed so as to regulate the closest distance between the fiber supply unit 29 and the fiber supply unit 33 to a predetermined interval, even if the fiber supply unit 33 has passed a predetermined spinning position, the fiber supply will be stopped. The lower end surface of the duct 51 comes into contact with the upper end of the regulating bolt 60, and contact between the outer circumferential surfaces of both twisting rollers 25 and 29 and the fiber supply unit 33 is avoided. Therefore, the outer circumferential surfaces of both twisting rollers 25 and 29 are not scratched, which would adversely affect the twisting action.

In addition, in the present invention, by keeping the relative position between the two twisting rollers 25 and 29 immobile, the accumulated fibers can be removed while maintaining the gap between the two rollers 25 and 29, which has a large effect on the twisting action, at a preset state. Therefore, the best twisting effect can be obtained during piecing and subsequent spinning. Since the fiber supply unit 33 is arranged and held at the spinning position by the action of the torsion spring 53, the unit 33 tends to generate slight vibrations during operation, but these vibrations are caused by the stress in the wedge-shaped space R. Of course, it does not adversely affect the twisting action.

The present invention is not limited to the above-mentioned embodiment, but also includes embodiments shown in FIGS. 8 and 9, for example.

In the embodiment shown in FIG. 8, the cam 65 fastened to the support pipe 32 is provided with only one engagement groove 65a that can engage with the latching portion 55a of the latching lever 55. An arc-shaped regulation hole 65b is transparently provided in the same direction. And mounting plate 3
The regulation protrusion 35a protruding from the left end of the regulation hole 6
5b, and when the fiber supply unit 33 is rotated backward from the spinning position shown by the solid line in the figure, the regulating protrusion 35a comes into contact with the left end side of the regulating hole 65b as shown by the chain line, Fiber supply unit 33
is held in the non-spinning position shown by the chain line in the figure. Moreover, when the fiber supply unit 33 is rotationally biased from this non-spinning position to the spinning position,
Rotation of the fiber supply unit 33 is regulated by the regulation protrusion 35a coming into contact with the right end of the regulation hole 65b, and contact between the twisting rollers 25, 29 and the fiber supply unit 33 is prevented.

In the embodiment shown in FIG.
is slidably supported on a support stand 67, and a pressing spring 68 interposed between the support stand 67 and the hanging portion 66a of the fiber supply unit 66 causes the fiber supply unit 66 to move between the twisting rollers 25, 29.
It is elastically biased in the direction away from. A regulating bolt 60 is screwed onto the rear surface (right side in the figure) of the support base 67, and is tightened and fixed by a nut 61 so that its position can be adjusted in the left-right direction. Furthermore, two elastic rollers 69 and 70 supported on the fiber supply unit 66 side are disposed between a roller 48 coaxially connected to the fiber opening roller 37 and the drive roller 47 fixed on the drive shaft 31. is interposed between the roller 71 operatively connected to the feed roller 36 via an electromagnetic clutch and the drive roller 72 fixed to the drive shaft 42, and two elastic rollers supported on the fiber supply unit 66 side. Rollers 73 and 74 are interposed. When the fiber supply unit 66 is in the spinning position shown by the solid line in the figure, the latching portion 75a of the latching lever 75, which is rotatably biased in the same manner as in the first embodiment, is attached to the support base 67. The fiber supply unit 66 is adapted to be engaged with the front end, and during spinning, the fiber supply unit 66 is regulated and held at the spinning position. On the other hand, the fiber supply unit 6
6 is retracted to the non-spinning position shown by the chain line, the hook 75a engages in the engagement groove 67a provided on the support base 67, and the fiber supply unit 66 is moved to the non-spinning position. Regulations are maintained.

In this embodiment, due to the sliding arrangement of the fiber supply unit 66, the driving roller 47 and the elastic roller 7
0, the drive roller 72, and the elastic roller 74 come into contact with each other, but these contact and separation are easy and smooth as in the previous embodiment. Furthermore, a sufficient sliding distance of the fiber supply unit 66 can be ensured, and the wedge-shaped space R can be widened to facilitate the removal of accumulated fibers. moreover,
Fiber supply unit 66 from non-spinning position to spinning position
When the twisting rollers 25 and 29 are slid, the hanging portion 66a comes into contact with the regulating bolt 60, thereby preventing the twisting rollers 25, 29 from coming into contact with the fiber supply unit 66. Therefore, the outer circumferential surfaces of both twisting rollers 25 and 29 are not scratched, which would adversely affect the twisting action.

Further, in the illustrated example, a fiber-spreading roller is used as the fiber-spreading mechanism, but instead of this, a draft roller consisting of a plurality of roller pairs may be used.

Furthermore, it is also possible to embody the present invention in an adsorption twisting spinning device in which each of the pair of twisting rollers has an air intake hole.

Effects of the invention As described in detail above, the present invention allows the fiber supply unit to be moved from the spinning position to the non-spinning position to easily clean the wedge-shaped space. It is possible to secure the optimal spinning position when moving the fiber supply unit to the desired position, and
It has the excellent effect of avoiding contact with both twisting rollers and preventing the occurrence of scratches on the outer peripheral surface that would adversely affect the twisting action.

[Brief explanation of the drawing]

1 to 7 show an embodiment embodying the present invention. FIG. 1 is a cutaway side view of the main part, FIG. 2 is a side view of the other side, FIG. 3 is a plan view of the main part, and FIG. A- in Figure 3
A sectional view taken along line A, FIG. 5 is a front view of the fiber supply unit, FIG. 6 is a side view with a main part cut away showing changes from FIG. 1, and FIG. 7 is another side view showing changes from FIG. 2. , FIG. 8 is a side view of the main part showing another example of the present invention, FIG. 9 is a side view of the main part broken away similarly showing another example, and FIG.
The figure is a plan sectional view showing a conventional device, and FIG. 11 is a side view of the main part. 25, 29... Twisting roller, 33, 66... Fiber supply unit, 53... Torsion spring constituting the locking mechanism, 54... Also the cam, 55... Also the latching lever, 60... Constructing the contact prevention mechanism. Regulation bolt, 61... Also nut, 35a...
Similarly, regulating protrusion, 65b... also regulating hole.

Claims (1)

[Claims for Utility Model Registration] 1. The spread fibers that have passed through the fiber supply channel of the fiber supply unit are spread in a wedge-shaped space formed by the surfaces of a pair of twisting rollers that are arranged adjacent to each other and rotate in the same direction. In the suction twisting spinning device, in which the fiber is spun as a yarn by being subjected to a twisting action while being attracted to at least one of the twisting rollers, the fiber supply unit is arranged at a spinning position close to the wedge-shaped space and at a spinning position close to the wedge-shaped space. The twisting rollers are arranged movably between a non-spinning position where the front surface is open, and a locking mechanism is provided for positioning and holding the fiber supply unit at the spinning position, and the twisting rollers and the fiber supply unit are connected to each other. 1. A locking device for a fiber supply unit in an adsorption twisting spinning device, characterized in that a contact prevention mechanism is provided for regulating the closest distance between fibers to a predetermined distance. 2. The fiber supply unit is rotatably supported by a support pipe through which a drive shaft for driving the feed roller is inserted, and the support pipe is configured to bias the fiber supply unit to rotate in a direction to separate the unit from the twisting rollers. A torsion spring wound around the support pipe, a cam fixed to the support pipe, and a latch lever elastically biased to rotate so as to engage with a pair of engagement grooves provided in the cam. The fiber supply unit in the suction twist spinning apparatus according to claim 1, wherein the fiber supply unit is arranged and held in the spinning position and the non-spinning position by a lock mechanism. locking device. 3. The contact prevention mechanism includes a position regulating member that is adjustable on a support base that supports both the twisting rollers, and the lower end surface of the fiber supply duct of the fiber supply unit is located at the upper end of the position regulating member. A locking device for a fiber supply unit in an adsorption twisting spinning device according to claim 2, wherein the fiber supply unit is adapted to abut against each other. 4. The contact prevention mechanism comprises an arcuate regulation hole provided in the cam and a regulation protrusion protruding from the side surface of the fiber supply unit and inserted into the regulation hole. 3. A locking device for a fiber supply unit in the suction twisting spinning apparatus according to item 2. 5. The fiber supply unit is slidably supported on a support base, and is interposed between a hanging portion of the unit and the support base so as to urge the unit in a direction away from the twisting rollers. The fiber supply unit is rotated by a locking mechanism consisting of a pressing spring provided on the support base and a latch lever that is elastically biased to rotate so as to engage with an engagement groove provided on the support base and the front end. A locking device for a fiber supply unit in an adsorption twisting spinning device according to claim 1, wherein the locking device is adapted to be arranged and held in a spinning position and a non-spinning position. 6. The contact prevention mechanism is comprised of a position regulating member that is adjustable on the rear side of the support base, and the hanging portion is in contact with the position regulating member. A locking device for a fiber supply unit in the suction twisting and spinning apparatus described above.