JP2827533B2 - Roving splicing head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention replaces a roving bobbin (roof winding) suspended on a creel of a spinning machine with a full bobbin (pre-roof winding) suspended on a preliminary roving winding rail. The present invention relates to a roving yarn splicing head provided in a roving yarn splicing device that performs a roving yarn splicing (shino splicing) operation prior to the roving yarn changing machine that performs the replacing operation.

[0002]

2. Description of the Related Art In a spinning machine, in particular, a ring spinning machine, a roving is drawn from a roving wound on a creel and supplied to a draft part below. When the supply of roving to the draft part progresses and the roving becomes empty or near empty, it is necessary to replace it with a new roving, and at that time, the roving end of the roving to be newly replaced with roving being spun. Needs to be spliced. Conventionally, this roving splicing operation has generally been performed manually, but in recent years, automation of the roving splicing operation has been proposed (for example, JP-A-62-57957 and JP-A-62-56272). .

[0003] The above publication discloses a shino (roving) formed at the tip end.
Shino gripping members are provided on the main body on both sides of the guide groove, and the Shino grip lever reciprocating across the Shino guide groove grips the Shino of a full bobbin for Shino and the Shino grip of a Kodama bobbin after Shino Is disclosed. In this Shinotsu head, the Shino gripping member and Shino gripping lever on one side of the Shino guide groove grip the Shino end of the Kodama bobbin in the upstream portion where the Shino end of the full bobbin is Shino joined to the Shino of the Kodama bobbin being spun. When cutting the Shino by the rotation of the rollers, the Shino of the small bobbin before cutting is strongly pressed against the groove side wall of the Shino guide groove. As a result, the single fibers of the portion pressed into contact with the groove side walls are tightly adhered to each other and the single fibers do not slip, so that it is as if the single side fibers were gripped by the groove side walls, and between the back roller and the groove side walls. Is disconnected. Since the distance between the back roller and the groove side wall is short, the shape of the cut shino-tip becomes sharply thin and does not become a long brush-tip-shaped shino-tip. Shino ends shorter than the distance between the rollers of the draft part are spun in a slab shape without drafting, and there is a problem in that the portion becomes a large centrifugal force at the time of winding and ballooning changes suddenly, causing thread breakage. .

As a solution to this problem, FIGS.
The Shinotsu head shown in FIG. 20 has been proposed in Japanese Patent Application Laid-Open No. 1-97223. The Shino joint head has a Shino guide groove 72 formed at the tip end of a main body 71, and a Manshin grip lever 73 that can reciprocate across the Shino guide groove 72 is provided on the main body 71. On one side of the Shino guide groove 72, a Manshin holding member 74 for holding the Shino of the full bobbin in cooperation with the Manshin holding lever 73 is provided. On the side opposite to the Shino guide groove 72 with the Manshino grip lever 73 interposed therebetween, a remnant Shino grip lever 75 is provided.
Are provided so as to be able to move back and forth along the groove. At the front end of the main body 71, there is provided a remnant holding member 76 for cooperating with the remnant holding lever 75 to grip the full bobbin. In this roving splicing head, Shishino (a small bobbin shino of the upstream part where the shino end of a full bobbin is shino spliced to a small bobbin shino spinning)
19 is gripped at the distal end of the main body 71 by the remnant gripping lever 75 moved to the distal end side of the main body 71 and the remnant gripping member 76. The remnant is provided between the grip point of the remnant grip member 76 and the grip point of the back roller.
Because it is drafted while being stretched in the opening space of
The single fiber is cut in such a manner that the single fiber slips off and slips in between the two gripping points. Therefore, the Shinohana after cutting becomes a brush point,
Even in the case of a fiber having a short average fiber length, such as a cotton card yarn, yarn breakage due to the slab end being spun out is eliminated.

[0005]

However, in the above-mentioned roving splicing head, the full bobbin gripping position of the Shino is located above the Shino guide groove 72 and on the side of the Shino guide groove 72. When the Manshino grip lever 73 moves across the Shino guide groove 72 and grips Manshin in cooperation with the Manshino gripping member 74 in the state of being introduced into the inside, the Manshino moves and Manshino's tip position is difficult to stabilize. Therefore, after the spinning Shino is introduced into the Shino guide groove, the gripping of Manshino is released, and the Manshino moves with the spinning Shino and the tip is inserted into the trumpet. There is an inconvenience that a problem may occur.

In the conventional apparatus, when the old roving is gripped, the manshin gripping lever 73 is disposed at the old roving guide position on the opposite side to the position where the manshin gripping member 74 comes into contact. The grip is released. Therefore, there is an inconvenience that it is not possible to cut the Shino (old Shino) during spinning first and insert the Shino (Manshino) end to be inserted into the trumpet (so-called follow-up). .

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to hold a new roving (Manshino) in a state where the tip position thereof is stable and to use an old roving (old). It is an object of the present invention to provide a roving splicing head in which a roving end is shaped like a brush tip when cutting (shino), and can also be followed up.

[0008]

According to the present invention, there is provided a roving yarn splicing head body having a roving yarn guiding groove formed at a tip thereof, a wall surface of the roving yarn guiding groove or an extension thereof. In order to grip the old roving yarn, the roving yarn guiding groove is communicated with the roving yarn guiding groove at a position corresponding to the middle portion of the roving yarn guiding groove, and the roving yarn guiding head is provided in a cutout portion provided in the vertical direction. On the upper side, a first gripping member having a gripping portion movably provided between a standby position allowing roving of the roving yarn in the roving yarn guide groove and a roving yarn gripping position, and a position below the first gripping member. In order to grasp a new roving yarn between the wall surface of the roving yarn guide groove and the depth of the roving yarn guiding groove from the roving yarn gripping position of the first gripping member, the roving yarn guide communicates with the roving yarn guiding groove and the roving yarn guide. In the notch provided in the direction perpendicular to the groove, wait for the movement of the roving in the roving guide groove. A second gripping member having position and roving gripping position and gripping part provided movably, and a drivable drive independently the two gripping members.

Further, in the invention described in claim 2, the second
The gripping member is fixed to the rotating shaft so as to be integrally rotatable, and the old roving enters the roving guide groove into at least one of the rotating shaft and the second gripping member to a depth from the roving position of the first gripping member. The regulating member for regulating the rotation of the second gripping member is integrally turned into a regulating position intersecting with the roving guide groove in accordance with the rotation of the second gripping member, and a retracting position allowing the infiltration of the roving into the roving guide groove. It is movably supported.

[0010]

The new roving yarn and the old roving yarn are gripped by different gripping members arranged vertically on the roving splicing head. The new roving is introduced into the roving guide groove formed in the roving splicing head, and communicates with the roving guide groove and can move in the cutout provided in the direction perpendicular to the roving guide groove. It is gripped between the provided second gripping member and the wall surface of the roving guide groove facing the cutout. The old roving is introduced near the tip of the roving guide groove, and the first roving is disposed above the second gripping member.
The roving yarn is gripped between the gripping member and the wall surface opposite to the roving yarn guide groove wall surface used for gripping the new roving yarn or an extension thereof.
When the new roving is received by the second gripping member while being introduced into the roving guide groove, it hardly moves in the roving guide groove, and the leading end position of the roving is stabilized.

In the second aspect of the present invention, when the second gripping member is located at the new roving yarn gripping position, the regulating member that moves integrally with the second gripping member is located at the regulating position. Therefore, in the new roving holding state, the intrusion of the roving into the depth of the roving guide groove is regulated by the action of the regulating member, and when the roving splicing head moves to the gripping position of the old roving, the old roving is The intrusion into the depth of the yarn guide groove and hindrance to gripping by the first gripping member is reliably avoided.

[0012]

(Embodiment 1) Hereinafter, the first embodiment of the present invention will be described.
An embodiment will be described with reference to FIGS. Roving splicer 1
Is mounted on a roving yarn changer (not shown) which moves along a spinning machine stand to perform roving yarn changing work. As shown in FIG. 1, the roving splicing head 2 is rotatably supported at the tip of a support arm 3 of the roving splicing device 1. The support arm 3 positions the roving splicing head 2 at a roving splicing position above the draft part and at a retracting position that does not hinder the movement of the roving yarn changer. Thus, it is fixed at the base end of the support arm 3 so as to be integrally rotatable. As shown in FIG. 2, a substantially U-shaped mounting portion 3a is formed at the tip of the support arm 3, and the rotating shaft 5 is supported so as to protrude to the side of the mounting portion 3a. At a position corresponding to the inside of the mounting portion 3a of the rotating shaft 5, a toothed pulley 6a is fitted and fixed so as to be integrally rotatable, and is attached to the toothed pulley 6a and a drive shaft of a motor 7 fixed to the base end of the support arm 3. A toothed belt 8 is wound around the fitted toothed pulley 6b. The roving splicing head 2 is integrally rotatably fixed to a portion of the rotating shaft 5 protruding to the side of the mounting portion 3a, and the roving splicing head 2 is rotated by driving the motor 7. I have.

A bulging portion 1 having a slope inclined downward toward the rear is provided at a lower portion of the leading end of the head main body 10 of the roving splicing head 2.
0a is formed, and the tip of the bulging portion 10a is
(Illustrated in FIG. 7 and the like). A roving guide groove 11 is formed at the tip of the head main body 10 so as to extend in the longitudinal direction and the vertical direction of the head body 10, and the base end (innermost) of the roving guide groove 11 is the bulging portion 10.
a. The bulging part 10
Cutouts 12 and 13 are formed on both sides of the roving guide groove 11 on both sides of the roving guide groove 11 so as to communicate with the roving guide groove 11 and open the roving guide groove 11 to the rear and side of the bulging portion 10a. Have been. As shown in FIGS. 3 and 4, the notches 12 and 13 are formed at positions shifted in the vertical direction, and one notch 12 located on the upper side is longer than the other notch 13 located on the lower side. Is formed.

A pair of support pins 14 and 15 are rotatably mounted on the head body 10 behind the bulging portion 10a so as to protrude from the upper and lower sides of the head body 10.
A first catcher 16 as a first holding member is attached to the lower end of one of the support pins 14 so as to be integrally rotatable at its base end, and a lever 17 is provided at the upper end in a state extending along the longitudinal direction of the head body 10. One end is fixed so as to be integrally rotatable. The tip of the first catcher 16 is inserted into the one notch 12, and the rotation of the support pin 14 causes the gripping portion 16 a to enter the roving yarn guide groove 11, and one wall surface of the roving yarn guide groove 11. 11a, the roving yarn gripping position for gripping the roving yarn, and the gripping portion 16a
It is movably disposed to a standby position where it is retracted from the inside and allows the movement of the roving in the roving guide groove. A second catcher 18 as a second gripping member is attached to a lower end of the other support pin 15 as a rotation shaft so as to be integrally rotatable at a base end thereof, and a lever 19 is provided at an upper end along a longitudinal direction of the head main body 10. In an extended state, it is integrally rotatably fixed at one end. The second catcher 18 is the first
It is formed shorter than the catcher 16, and its tip is inserted into the other cutout 13, and the rotation of the support pin 15 causes the grip portion 18 a to enter the roving yarn guide groove 11, and the other end of the roving yarn guide groove 11. A roving yarn gripping position in which the roving yarn is gripped in cooperation with the wall surface 11b, and a standby position where the gripping portion 18a is retracted from the roving yarn guiding groove 11 to allow the roving yarn to move in the roving yarn guiding groove 11. And are movably arranged.

A restricting member 41 is fixed to the tip of the second catcher 18. The restricting member 41 is a bulge 10
is a rod-shaped member extending downwardly from the position of the regulating member 4 in a state where the second catcher 18 is disposed at the roving grasping position.
1 is arranged at a regulating position intersecting with the roving guide groove 11.
A support block 20 is provided near the support arm 3 of the rotary shaft 5.
Are fixed so as to be integrally rotatable, and a support plate 21 is fixed between the support block 20 and the base upper surface of the head body 10. At one end of the support plate 21 (close to the support arm 3), a column 22 is erected, and a plate 23 is fixed to the tip of the column 22. A pair of air cylinders 24 and 25 as a driving device are
At a base end thereof, it is supported via a support shaft 26 so as to extend in a direction orthogonal to. One air cylinder 24
Indicates that the piston rod 24a is connected to the one support pin 1
The lever 17 is rotatably connected to the other end of the lever 17 via a pin 27. The other air cylinder 2
Reference numeral 5 denotes a piston rod 25a rotatably connected via a pin 27 to the other end of a lever 19 having one end connected to the other support pin 15. The first catcher 16 and the second catcher 18 are rotated via levers 17 and 19 by the operation of the air cylinders 24 and 25. A cover 28 that covers the levers 17 and 19 and the air cylinders 24 and 25 is attached to the roving splicing head 2 via an attachment member (not shown) fixed to the support plate 21. The roving guide groove 11 extends to near the base end.

Next, the operation of the roving splicing head 2 configured as described above will be described. The first catcher 16 and the second catcher 18 are turned integrally with the levers 17 and 19 in the same direction. As shown in FIGS. 2 and 5, when the piston rod 24a is located at the projecting position, the first catcher 16 is located at the standby position where the gripping portion 16a is retracted from the roving guide groove 11, as shown in FIG. When the piston rod 24a is disposed at the immersion position as described above,
6a is arranged at a roving holding position capable of gripping the roving in cooperation with one wall surface 11a of the roving guiding groove 11. The second catcher 18 has a piston rod 25a as shown in FIG.
When the piston rod 25a is located at the protruding position as shown in FIGS. 5 and 6, the grip portion 18a is located at the standby position retracted from the roving guide groove 11. The grip portion 18a is in the roving guide groove 1
In cooperation with the other wall surface 11b of the one, it is arranged at a roving grasping position where the roving can be grasped.

When gripping the new roving yarn R2 drawn from the full bobbin, as shown in FIG.
And the second catcher 18 is arranged at the standby position, and the new roving thread R2 is introduced into the roving thread guide groove 11 in a state where the roving thread can freely enter into the roving thread guiding groove 11. New roving yarn R
The other air cylinder 25 is operated in a state where 2 is introduced to the depth of the roving guide groove 11, and the second catcher 18 is rotated counterclockwise in FIG. 2 together with the lever 19 by the projection operation of the piston rod 25a. . Then, as shown in FIG. 5, the grip portion 18 a is connected to the other wall surface 1 of the roving yarn guide groove 11.
The new roving thread R2 is disposed at a roving thread gripping position in contact with the other roving thread 1b and cooperates with the other wall surface 11b. New roving yarn R2
Is gripped by being pushed into the other wall surface 11b by the gripping portion 18a of the second catcher 18 in a state where it is introduced into the depth of the roving yarn guide groove 11, so that it is gripped by the second catcher 18. Hardly move to
The tip position of the new roving thread R2 is stabilized.

The holding of the new roving yarn R2 is performed at a position away from the draft part on the front side of the spinning frame. After the holding of the new roving yarn R2, the support arm 3 is rotated by the drive shaft 4 to rotate the spinning machine. It is tilted toward the machine base, and the roving splicing head 2 is moved and arranged to a roving splicing work position near and above the draft part. Since the cover 28 exists above the head main body 10, it is possible to reliably prevent the new roving R2 from being bent or the new roving R2 from being caught on the levers 17 and 19 when the roving splicing head 2 moves. .

When the roving splicing head 2 is moved to the roving splicing operation position, the old roving R1 being spun out is introduced into the roving guide groove 11 as shown in FIG. In a state where the second catcher 18 is arranged at the roving grasping position, the old roving R1 is prevented from moving to the back side from the regulating member 41, and the old roving R1 receives the grasping action of the first catcher 16. Is held. After the roving splicing head 2 is arranged at the roving splicing operation position,
At the same position, one of the air cylinders 24 is operated, and the piston rod 24a is immersed. This makes the first
The catcher 16 is rotated together with the lever 17 in the clockwise direction in FIG. 5, and the grip portion 16a is moved to the roving yarn gripping position where the old roving yarn R1 is pressed against one wall surface 11a of the roving yarn guiding groove 11 as shown in FIG. The old roving R1 is arranged and cooperates with the one wall surface 11a.

Next, the motor 7 is driven to drive the roving splicing head 2
8 is rotated counterclockwise in FIG. 7 around the rotation shaft 5, and FIG.
As shown in (1), the old roving R1 is cut between the roving splicing head 2 and the trumpet 9, and the old roving R1 connected to the trumpet 9 falls downward. Next, one air cylinder 24
Is operated to place the first catcher 16 at the standby position, and the gripping of the old roving R1 by the first catcher 16 is released. After the old roving R1 has been cut, after a predetermined time has elapsed in which the roving end being spun out of the trumpet 9 has a length suitable for roving splicing, the motor 7 is driven in reverse to drive the roving splicing head 2 Is rotated clockwise from the position shown in FIG. The roving splicing head 2 is rotated at a high speed up to the position shown in FIG. 9, and is rotated at a low speed from the position to rotate the roving splicing head 2 as shown in FIG. The end is inserted into the trumpet 9. At this time, the rotation speed of the roving splicing head 2 is controlled so as to be substantially equal to or slightly higher than the rotation speed of the back roller 29. When the end of the new roving R2 is fed to the back roller 29, the other air cylinder 25 is operated, and the gripping of the new roving R2 by the second catcher 18 is released. Then, the new roving R2 passes through the back roller 29 in a state of being overlapped with the roving end of the old roving R1, and the roving is spliced, and thereafter, the spinning is continued by the new roving R2.

Although the new roving yarn R2 is only gripped by the grip portion 18a and the wall surface 11b in a short portion, the roving yarn guide groove 11 extends below the grip portion 18a. 11 is short, so that the roving splicing head 2
The tip of the new roving thread R2 does not move or bend when turning, and the insertion of the new roving thread R2 into the trumpet 9 is performed reliably, and the success rate of roving splicing is improved. or,
Since the gripping position of the new roving R2 and the gripping position of the old roving R1 are separated not only in the vertical direction but also in the longitudinal direction of the roving guide groove 11, the old roving R1 is cut when the old roving R1 is cut. There is no risk of entanglement with the new roving R2.

As mentioned above, after cutting the old roving R1, the new roving R
Japanese Patent Laid-Open No. 1-97223 describes a roving splicing method of inserting the end of the rod 2 into the trumpet 9, that is, a so-called splicing method.
As in the method disclosed in Japanese Patent Application Laid-Open Publication No. H10-210, an end of the new roving R2 is inserted into the trumpet 9 before cutting the old roving R1, and thereafter, a roving splicing method for cutting the old roving R1 may be performed. it can. When performing the roving splicing method, as shown in FIG.
With the new roving thread R2 gripped by the roving thread splicing head 2 and the old roving thread R1 introduced into the roving thread guiding groove 11, the roving splicing head 2 is rotated clockwise to generate a new roving thread on the trumpet 9. R
2 is inserted. At the time when the tip of the new roving R2 is substantially bitten by the back roller 29, one air cylinder 24 is operated, the old roving R1 is gripped by the first catcher 16, and the other air cylinder 25 is operated almost at the same time. Thus, the gripping of the new roving R2 by the second catcher 18 is released. Then, the roving splicing head 2 is rotated counterclockwise to cut the old roving R1. The old roving thread R1 is gripped near the leading end of the roving thread guiding groove 11, and there is no pressure contact between the new roving thread R2 and the old roving thread R1 in the roving thread guiding groove 11. It is pulled out and cut in a free state. Further, since the single fibers also slide on each other, the cut end has a brush tip shape. In addition, since the insertion of the new roving R2 into the trumpet 9 and the cutting of the old roving R1 can be positively performed by the rotation of the roving splicing head 2, the time of the roving splicing operation is shortened.

(Embodiment 2) Next, a second embodiment will be described with reference to FIGS. In this embodiment, there is provided a regulating member which regulates the old roving R1 from entering the roving guide groove 11 to the back from the roving holding position of the first catcher 16, and two head bodies 10 are provided. Is divided into
The point that the notch 12 for the first catcher 16 is not provided is greatly different from the above-described embodiment. The head body 10 is a guide block 10 in which a roving yarn guide groove 11 and a cutout 13 are formed.
b and a main body 10 c supporting the support pins 14, 15, etc., and are connected by screws 30. The guide block 10b is formed so as to have an upper portion on the side where the cutout portion 13 is formed with the roving yarn guide groove 11 interposed therebetween, so that one wall surface 11a is extended. The first catcher 16 is integrally rotatably fixed to an upper protruding portion of the main body 10c of one of the support pins 14, and a lever 17 is connected to the upper side thereof. Then, the first catcher 16 has one wall surface 11a.
The old roving R1 is gripped between the extended portion and the extended portion. A regulating member 31 is fixed to the upper projecting portion of the main body 10c of the other support pin 15 so as to be integrally rotatable.
The regulating member 31 is a support portion 3 fitted and fixed to the support pin 15.
L-shaped regulating rod 3 protruding from support portion 1a and 1a
1b, the regulating rod 31b is arranged at a regulating position intersecting with the roving guide groove 11 in a state where the second catcher 18 is arranged at the roving grasping position.
In a state where 8 is arranged at the standby position, the regulating rod 31b is arranged at a retreat position allowing the intrusion of the roving into the roving guide groove 11.

In the roving splicing head 2 of this embodiment,
When the second catcher 18 is located at the roving grasping position, the regulating rod 31b is always located at the regulating position. When the old roving R1 is introduced into the roving guide groove 11, the old roving R1 is surely prevented from entering deeper than the roving holding position of the first catcher 16, and the roving holding position is provided. Is held at the position corresponding to. Therefore, the first catcher 16
Of the old roving thread R by the first catcher 16 even if the roving thread gripping position of the
1 is securely held.

In this embodiment, since the head main body 10 is divided into two parts and connected to each other by the screws 30, the manufacture is easy and the maintenance of the roving guide groove 11 is also easy. Further, since the supply roving gel is changed by the spun fiber and the polyester and acrylic fibers are bulky and bulky, it is necessary to change the width of the roving guide groove 11, but it is easy to replace the guide block 10b. I can deal with it. Further, when the head body 10 is integrated, the material is limited in terms of strength and the like, and a material suitable for forming the roving guide groove 11 cannot be selected. The range of selection is expanded, and the use of an optimal material becomes possible.

(Embodiment 3) Next, a third embodiment will be described with reference to FIGS. This embodiment differs from both embodiments in that the roving splicing device 1 is provided with two roving splicing heads 2 in pairs. A pair of head bodies 10A and 10B having the same structure as the above embodiment are fitted and fixed to the rotating shaft 5 so as to be integrally rotatable. Newly provided head body 1
OB is fixed at the position where the support block 20 is attached in the first embodiment. In this embodiment, the support block 20 is not provided, and the support plate 21 is fixed to the upper surfaces of the base ends of the head bodies 10A and 10B. A first catcher 16 and a second catcher 18 similar to the head body 10A have support pins 14, 1 on the head body 10B.
5 is integrally rotatably supported at the lower end. Support pin 1
One ends of levers 32 and 33 shorter than the levers 17 and 19 are fixed to the upper ends of the levers 4 and 15 so as to be integrally rotatable.
Lever 32 and lever 17 provided on head body 10A
Are connected so as to be integrally rotatable via a connecting rod 34 and a pin 35. The lever 33 and the lever 19 provided on the head main body 10A are connected via a connecting rod 36 and a pin 37 so as to be integrally rotatable. Therefore, when the lever 17 is rotated by the operation of the air cylinder 24,
The first catchers 16 of the head bodies 10A and 10B are integrally rotated and arranged at the roving grasping position or the standby position. The operation of the air cylinder 25 causes the lever 1 to move.
9 is rotated, the second head body 10A, 10B
The catcher 18 is rotated integrally and placed at the roving grasping position or the standby position.

The present invention is not limited to the above embodiments. For example, as shown in FIG. 17, the head main body 10 is formed with two roving guide grooves 11 and two notches 12, 13 formed therein. Guide blocks 32a, 32b and support pin 1
Divided into three with the main body 10c supporting 4, 15
The screws 30 may be integrally connected and fixed. In such a case, since the two guide blocks 32a and 32b are divided into two parts around the roving guide groove 11, the finishing of the roving guide groove 11 becomes easy. In addition, a surface treatment such as Teflon coating may be applied to the wall surface of the roving yarn guide groove 11 in order to smooth the sliding of the roving yarn guiding groove 11 and reduce the frictional resistance between the roving yarn and the roving yarn guiding groove 11. Further, in order to prevent abrasion of the roving guide groove 11, the wall surface of the roving guide groove 11 may be subjected to hardening treatment, or the guide block may be formed of a material having excellent wear resistance such as ceramic. Instead of using an air cylinder as a driving means of the first catcher 16 and the second catcher 18 instead of using an air cylinder, or instead of providing the first gripping member and the second gripping member rotatably, the roving yarn guiding groove 11 is used. It may be configured to reciprocate in a direction perpendicular to the direction. Further, three or more roving splicing heads 2 may be provided. When spinning a fiber having a long fiber length, the distance from the second catcher to the lower end of the guide block may be increased.
Instead of regulating the position of the old roving with the regulating members 41, 41, the second catcher 18 may be extended and the position of the old roving may be regulated at its tip.

[0028]

As described above in detail, according to the present invention, the new roving yarn is introduced into the depth of the roving yarn guide groove formed in the roving yarn splicing head, and the new roving yarn is placed on the wall surface of the roving yarn guiding groove. (2) Since the new roving is hardly moved in the roving guide groove when receiving the gripping action of the second gripping member, the leading end position of the new roving is stable because the gripping is performed by the pressing member. Since the roving guide groove is continuous below the roving handle, the tip of the new roving is prevented from being bent when the roving splicing head is rotated, and the new roving is securely inserted into the trumpet. Can be. In the state where the old roving is introduced near the end of the roving guide groove, the new roving and the old roving are shifted in the front-rear direction between the first gripping member and the wall surface of the roving guiding groove. Since it is grasped, it does not contact each other in the roving guide groove at the time of cutting, and the old roving downstream of the gripping member gripped between the back roller and the first gripping member is pulled out and cut in a free state. The end of the thread becomes a brush point. Therefore, the success rate of roving splicing can be improved. In addition, since the new roving and the old roving can be gripped and released independently, in addition to the roving splicing method of cutting the old roving after inserting the new roving into the trumpet,
After the old roving has been cut, a new roving can be inserted into the trumpet.

According to the second aspect of the present invention, in the new roving state, the intrusion of the old roving into the roving guide groove is restricted by the action of the regulating member, and the old roving is moved into the roving guide groove. Intrusion into the back and obstruction of the gripping of the old roving by the first gripping member is reliably avoided.

[Brief description of the drawings]

FIG. 1 is a side view of a roving splicing apparatus including a roving splicing head according to a first embodiment of the present invention.

FIG. 2 is a plan view of the roving splicing head with the cover removed.

FIG. 3 is a partial perspective view of a roving splicing head.

4A is an enlarged sectional view taken along line AA of FIG. 1, FIG. 4B is an enlarged sectional view taken along line BB of FIG. 1, and FIG. 4C is an enlarged sectional view taken along line CC of FIG.

FIG. 5 is a plan view showing a state where a second catcher is arranged at a gripping position.

FIG. 6 is a plan view showing a state where both catchers are arranged at gripping positions.

FIG. 7 is a side view showing a state in which old roving is introduced into the roving guide groove.

FIG. 8 is a side view showing a cut state of the old roving.

FIG. 9 is a side view showing an operation of inserting a new roving into a trumpet.

FIG. 10 is a side view showing a state in which a new roving is inserted into a trumpet.

FIG. 11D shows the roving splicing head of the second embodiment.
FIG. 4 is a sectional view taken along line D.

FIG. 12 is a side view of a main part of the roving splicing head.

FIG. 13 is a front view of a main part of the roving splicing head.

FIG. 14 is a plan view showing a state in which both catchers of the roving splicing head of the third embodiment are arranged at standby positions.

FIG. 15 is a side view of the roving splicing head.

FIG. 16 is a plan view showing a state where both catchers are arranged at gripping positions.

FIG. 17 is a partial plan sectional view of a roving splicing head of a modified example.

FIG. 18 is a plan view of a conventional device.

FIG. 19 is a plan view of a conventional device.

FIG. 20 is a side view of a conventional device.

[Explanation of symbols]

2 ... roving splicing head, 10 ... head body, 11 ... roving guide groove, 11a ... wall surface, 11b ... wall surface, 15 ... support pin as a rotating shaft, 16 ... first catcher as a first gripping member, 16a ... Gripping portion, 18: second catcher as a second gripping gripping member, 18a: gripping portion, 31: regulating member, 3
1b: regulating rod, R1: old roving, R2: new roving.

Claims (2)

(57) [Claims] 1. A roving yarn guiding groove for gripping an old roving yarn between a roving yarn splicing head body having a roving yarn guiding groove formed at a tip thereof and a wall surface of the roving yarn guiding groove or an extension thereof. At the position corresponding to the intermediate portion, the roving yarn is allowed to move in the roving yarn guiding groove in the cutout portion provided above the roving yarn joining head and in the notch portion provided in the direction perpendicular to the roving yarn guiding groove. A first gripping member having a gripper movably provided between a standby position and a roving yarn gripping position, and a wall surface of a roving yarn guide groove at a position below the first gripping member and a first gripping member In order to grip the new roving yarn in the depth of the roving yarn guiding groove from the roving yarn gripping position of the roving yarn guiding groove, the roving yarn guiding groove communicates with the roving yarn guiding groove and is provided in the notch portion provided in a direction perpendicular to the roving yarn guiding groove. Has a gripper movably provided between a standby position for allowing roving movement of the roving yarn and a roving gripping position A roving splicing head comprising: a second gripping member; and a driving device capable of independently driving both gripping members. 2. The rotatable shaft according to claim 1, wherein said second gripping member is fixed to a rotating shaft so as to be integrally rotatable, and at least one of said rotating shaft and said second gripping member is provided with an old roving in the roving guide groove. A restricting member that restricts intrusion from the roving grasping position to the back is provided by the second
The rotatable support member is rotatably supported at a regulating position intersecting with the roving guide groove in accordance with the rotation of the gripping member and a retracting position for allowing the roving thread to enter into the back of the roving guide groove. The described roving splicing head.