JPH05132826A - Roving guarding on roving guide in fine spinning machine - Google Patents

Abstract

PURPOSE:To assuredly perform roving guarding without exact positioning of a roving guide by roving guarding of rovings fed from both full-loaded bobbins at a different checking site on the identical roving guide through a roving guide operation. CONSTITUTION:The respective intermediate parts of rovings R from both full- loaded bobbins F, F are first guided onto the respective grooves of roving guides 47, 50. By moving the roving guide 50, the interval between both the rovings is changed to a state corresponding to both openings 15a, 15b of a roving guide 13. The roving guide is then moved upward, and the rovings are respectively introduced into both the openings of the roving guide. Then, both the roving guides are moved along the longer direction of a creel to introduce the rovings into the respective insides of checking sites 16a, 16b, and then retreated. Thus, the rovings are guarded on the guide along with releasing the check between the rovings and their guides.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for hanging a roving thread on a roving guide of a spinning machine, and more specifically, for roving threads suspended in two rows inside and outside (front and rear) along a creel of a spinning machine. When the bobbin (coarse bobbin) approaches the sky, the roving ends of the full bobbin (preliminary roving bobbin) prepared in advance on the preliminary roving bobbin rail are spliced onto the roving being spun from the roving bobbin. After that, the present invention relates to a method of threading a full bobbin roving onto a roving guide of a spinning machine.

[0002]

2. Description of the Related Art In a spinning machine, especially a ring spinning machine, a roving yarn is drawn from a roving yarn bobbin suspended on two inner and outer rows of roving yarn winding rails forming a creel, and the roving yarn bobbins are respectively arranged at intermediate positions of the inner and outer roving yarn bobbins. The material is supplied to the lower draft part through the roving guide provided. When the supply of roving to the draft part progresses and the roving winding becomes empty or approaches empty, a roving replacement operation for replacing with a new full bobbin is required. Generally, due to the relationship between the spindle gauge and the full bobbin diameter, it is not possible to secure the number of roving bobbins in two rows on one side of the spinning frame with one full row of bobbins. Half of the lowered roving bobbin is done.

In recent years, automation has progressed in spinning factories, and automation of work has also been proposed in the spinning process. A roving thread changing method capable of efficiently performing the roving thread changing operation and also capable of dealing with the case where the full bobbin diameter is larger than twice the spindle gauge is disclosed in JP-A-61-11.
It is disclosed in Japanese Patent No. 9728. In this method, spinning is started with the full bobbin and the medium thread roving bobbin hung on the bobbin hangers in the inner and outer two rows of the spinning machine creel, and the middle thread roving bobbin is empty or empty. When approaching, the automatic roving changer sequentially moves from one end of the machine base to the other
Replace the inner and outer two roving bobbins with full bobbins every other set.

It has also been proposed to automate the roving splicing operation accompanying the roving replacement and the roving thread hooking operation after the completion of the roving splicing. JP-A-64-61519 and JP-A-2-7
Japanese Patent No. 4635 discloses an automatic roving thread hooking method for performing a roving thread changing method in which two inner and outer (front and rear) roving thread bobbins are replaced with full bobbins. JP-A-64-61
According to the method disclosed in Japanese Patent No. 519, a roving guide 80 having an upward hooking piece 80a as shown in FIG. 11 is suspended from two front and rear rows of bobbin hangers of a creel on both sides in the middle of a pair of front and rear small bobbins. Of the full bobbin by guiding the middle portion of the roving (shino) R drawn from the two full bobbins supported in front of the creel and supplied to the draft part with the roving guide member. With the roving thread hooked on the roving thread guide member, guide the roving thread guide member to the upper front side of the roving guide, and then move the roving thread guide member rearward to move above the roving guide and then move laterally. Guide it to the rear of the roving guide, then move the roving guide member downward or forward, and deposit the full bobbin roving hooked on the roving guide member during the movement in the roving guide. With, the roving thread of one full bobbin is wound around the hook piece 80a of the roving guide so as to be spun downward, and the roving thread of the other full bobbin straddles the hook piece 80a of the roving guide. It hangs so that it may spin down to the rear side.

Further, in the method disclosed in Japanese Patent Laid-Open No. 2-74635, as shown in FIG. 12, a planar C-shaped roving guide 80 is suspended from two front and rear rows of bobbin hangers of a creel. The small thread bobbins E are arranged on both sides in the middle of the small bobbin E, and the intermediate part of the roving thread (Shin) R drawn out from the two full bobbins supported in front of the creel and supplied to the draft part is guided to the roving thread. Guided by a member so that the full bobbin roving thread is hooked on the roving guide member, guide the roving guide member to a position above the roving guide, and then move the roving guide member rearward to move the roving guide member. The roving on the downstream side of the member is passed through the opening of the roving guide C
After guiding into the roving guide, the roving guide members are moved laterally in the direction of approaching each other, then the roving guide member is returned to the upper side of the roving guide and then moved downward, and during that movement, The full bobbin roving thread hung on the thread guide member is stored in the roving guide, and the two full bobbin roving threads are hung over the roving guide so as to be spun downward.

[0006]

In the above-mentioned conventional roving thread hanging method, the roving threads connected to the two full bobbins to be roved are not hung on the same roving guide, but each roving thread is changed until the roving change time. 2 Guides the roving during spinning
Hang separately on each roving guide. Therefore, since the roving yarn to be replaced with the roving yarn and the roving yarn not to be replaced with the roving yarn are hooked on one roving guide, there is a possibility that the roving yarns other than the roving yarn replacement target are adversely affected when the roving yarn hooking fails. Further, the roving guides are arranged at a predetermined interval in the longitudinal direction of the spinning machine, and there are a huge number. And, this roving guide is attached to a support pipe horizontally attached to the creel pillar, and is designed inexpensively in view of the product cost. It is very difficult to place each roving guide in a strictly precise position. .. Moreover, the roving guide cannot be made too large due to the restrictions of the roving yarn traveling line and the cost, and the guide port for the roving yarn cannot be made so large. However, in the above-described conventional roving thread hanging method, two roving threads are hung on different roving guides at the same time, so that the roving guide must be accurately positioned in order to surely hang the roving thread on the roving guide. There is a problem in that it is strongly required to be installed.

Further, the roving thread hooking operation is performed after the end portion of the roving thread drawn out from the full bobbin is spliced to the roving thread being spun from the small bobbin to be replaced with the roving thread. During roving yarn splicing, the roving yarn being fed from the small bobbin to the draft part is cut below the roving guide. Then, before the roving thread hooking operation, the small ball bobbin is rotated, and the roving thread hanging from the small ball bobbin through the roving guide is wound on the small ball bobbin. When the conventional roving method is carried out, the roving thread hanging from the small ball bobbin is wound while the roving thread being spun is guided. The roving thread hanging from the small bobbin is guided so that it does not contact the roving thread during spinning and the roving guide, but the part that hangs below the roving guide is in a free state. If the speed is increased, the roving yarn shakes during winding and comes into contact with the roving yarn being spun. Then, the roving to be wound moves in the direction opposite to the moving direction of the spun roving, so that fluff is generated in the spun roving, or the fiber at the end of the roving is attached to the spun roving and spun. There is an inconvenience that the quality of the yarn is deteriorated. If the winding is delayed in order to avoid this inconvenience, there is a problem that the time required for changing the roving becomes long.

According to the method disclosed in Japanese Patent Laid-Open No. 64-61519, one of two rovings to be roved is temporarily wound around the hook piece 80a of the roving guide 80. Spinning is performed in the state. In this state, the resistance applied to the roving yarn is large, and since this state continues for 20 to 30 seconds, it not only causes spinning of the fine yarn (quality deterioration), but also may cause roving breakage.

The present invention has been made in view of the above problems, and an object thereof is not to dispose the roving guide in a strictly accurate position, and the roving should be replaced when the roving is applied. It is an object of the present invention to provide a roving thread hooking method for a roving guide of a spinning machine, which does not interfere with roving threads other than the roving thread bobbin and can reliably prevent quality deterioration of spun yarn.

[0010]

In order to achieve the above-mentioned object, the roving thread hanging method of the present invention is such that the roving thread bobbin suspended in two rows inside and outside along the creel is rotated about a spindle. A roving guide having two independent opening portions and locking portions, which are arranged in a state capable of being always held at a predetermined position during normal spinning by an urging means, and in which roving is introduced. The roving yarns of two full bobbins supported on the outside of the creel with the roving ends spliced from the roving yarns spun from two inner and outer roving yarn bobbins to be replaced This is a roving thread hooking method in which the roving thread hooking device equipped in the replacement machine simultaneously hangs the thread, and guides the middle part of the roving thread that is being fed from both full bobbins to the draft part to the guide groove of the roving thread guide. At least one of the roving guides to After setting the gaps of the roving guide to correspond to both openings of the roving guide, move both roving guides to the positions where their guide grooves are located above the roving guide, and put the roving into each opening of the roving guide. Then, both roving guides are moved along the longitudinal direction of the creel to guide the roving inside the locking part, and then both roving guides are retracted to hang the roving on the roving guide. The engagement between the yarn guide and the roving yarn is released.

[0011]

[Function] A draft part from two full bobbins supported on the outside of the creel with the roving ends spliced from the rovings spun from two roving bobbins inside and outside to be replaced. The intermediate portion of the roving yarn being fed to is guided to the guide groove of the roving yarn guide. Next, at least one of the roving yarn guides is moved to change the spacing between the roving yarns in engagement with both roving yarn guides to a state corresponding to both openings of the roving guide. Then, the roving yarn guide is moved to a position where the guide groove is arranged above the roving guide, and the roving yarn is introduced into both openings of the roving guide. Next, both roving yarn guides move along the longitudinal direction of the creel to guide the roving yarns to the inside of the locking part, then both roving yarn guides retract, and the roving yarns hang on the roving guide and The engagement of the yarn guide and the roving yarn is released, and the two roving yarns are hooked on different locking portions of the same roving guide.

[0012]

【Example】

(Embodiment 1) Hereinafter, an embodiment embodying the present invention will be described with reference to FIG.
~ It demonstrates according to FIG.

As shown in FIG. 5, in the creel 1 of the spinning machine, two rows of inner and outer roving winding rails 2a and 2b are arranged parallel to the longitudinal direction of the machine stand on both left and right sides (only one side is shown) of the machine stand. A support rail 3 is arranged between the roving winding rails 2a and 2b in parallel with the machine base longitudinal direction. Roving winding rail 2
A bobbin hanger 4 is mounted on each of a and 2b at a predetermined interval which is twice the spindle pitch. A support bracket 5 extends outward from the creel 1, and a carrier rail 6 as a preliminary roving winding rail is provided at the tip of the supporting bracket 5.
It extends parallel to a and 2b. A carrier 7 having a bobbin hanger 7a is movably supported on the carrier rail 6.

A support shaft 8 is fixed to the support rail 3 in a state of extending downward at a predetermined interval which is twice the spindle pitch. A support arm 9 is rotatably supported at each base end of each support shaft 8, and spring holders 10 are fixed to the support shaft 8 on both upper and lower sides of the support arm 9 by screws. As shown in FIG. 7A, a pair of torsion coil springs 11 are interposed between the support arm 9 and the spring holder 10. Both torsion coil springs 11 are formed to have the same torsion direction, and the support arm 9 is set to be parallel to the longitudinal direction of the support rail 3 in a state where the biasing forces of both torsion coil springs 11 are balanced.

A mounting rod 12 is fixed to the tip of the support arm 9 so as to extend downward, and a roving guide 13 is fixed to the lower end of the mounting rod 12. As shown in FIG. 3, the roving guide 13 has guide portions 14a and 14b formed on both left and right sides of the mounting rod 12. On the side corresponding to the outside of the creel 1 when the roving guide 13 is arranged at a predetermined position (reference position) during normal spinning, two openings 15a, 15b and a locking portion 16a,
16b is formed. The outer surfaces of the locking portions 16a and 16b are formed so as to extend obliquely toward the openings 15a and 15b so that the roving R can be smoothly guided to the openings 15a and 15b. Then, the roving R drawn from the roving bobbin (crude winding) suspended from the bobbin hanger 4 is guided to the trumpet 18 of the draft part 17 through the roving guide 13.

The roving thread hooking device 19 is installed in a roving thread changer 20 which moves along a spinning machine stand to perform a roving change operation. The roving yarn changer 20 is, for example, the same roving yarn exchanging device as the device disclosed in Japanese Patent Application Laid-Open No. 2-127368 previously proposed by the applicant of the present application, and before exchanging the roving yarn bobbin by the roving yarn exchanging device. A roving splicing device (not shown) for performing a roving splicing operation is provided. The roving thread hooking device 19 is arranged near the rear portion in the traveling direction of the roving thread changer 20 during the roving thread changing operation.

A support shaft 21 is supported on the front surface (side facing the creel 1) of the roving changer 20 via a bracket 22 so as to extend in parallel to the moving direction of the roving changer 20. A base 23 of the roving thread hooking device 19 is rotatably supported at the rear end of the support shaft 21. Bracket 2 fixed to the upper front frame of the roving changer 20
4, an air cylinder 25 is pin-connected at the base end. The piston rod 25a of the air cylinder 25 is rotatably connected to a bracket 26 fixed to the upper surface of the base plate 23 through a pin, and when the piston rod 25a is in the retracted position, the base plate 23 is held in a horizontal state, When the rod 25a is in the projecting position, the board 23 is held in the forward tilted position.

As shown in FIG. 4, the lower ends of the drive arm 28 and the auxiliary arm 29 of the support bracket 27 fixed to the upper surface of the base plate 23 are rotated via a shaft 30 extending in a direction orthogonal to the support shaft 21. Supported as possible. The drive arm 28 and the auxiliary arm 29 extend in parallel, and a support plate 31 is rotatably supported on the upper end of the drive arm 28 via a pin 32. A support bracket 33 having a U-shaped side surface is fixed to the upper surface of the base 23, and a forward and reverse rotatable motor 3 with a brake is mounted on the upper surface of the support bracket 33.
4 is fixed. A lever 35 is integrally rotatably attached to a drive shaft 34a of the motor 34, and the lever 35 and the drive arm 28 are connected via a connecting rod 36. The connecting rod 36 includes a drive arm 28 and a lever 35.
Is rotatably connected to the pin via a pin 37. The connecting rod 36 is equipped with a turnbuckle 38 at its intermediate portion so that its length can be adjusted. The drive shaft 34a of the motor 34 is rotated within a range of approximately 180 °,
The support plate 31 is moved in parallel with the support shaft 21 with the rotation of a. Further, a support piece 39 is horizontally fixed to the support bracket 33 at a position below the drive shaft 34a, and the support piece 39 detects that the lever 35 is arranged at four predetermined positions. The individual detection sensors S1 to S4 are attached at predetermined positions. The above-mentioned four predetermined positions are positions corresponding to when the roving thread guide, which will be described later, is arranged at the standby position, the roving thread scooping position, the roving guide insertion position, and the roving thread hooking completion position.

A motor 41 with a brake capable of rotating in the forward and reverse directions is fixed in parallel to the support shaft 21 to the support bracket 40 fixed to the upper surface of the support plate 31. It is preferable to use a servo motor or a stepping motor for the motor 41. A spindle 42 is provided above the motor 41.
Are fixed so as to extend parallel to the support shaft 21. The support shaft 42 includes a toothed pulley 43 and a support block 4.
4 is rotatably supported, and the toothed pulley 43 is integrally rotatably fixed to the support block 44 by a bolt (not shown). A toothed belt 46 is wound between the toothed pulley 45 and the toothed pulley 43, which are integrally rotatably fixed to the drive shaft 41 a (shown in FIG. 6) of the motor 41.

A fixed roving guide 47 is attached to the support block 44.
The base end of is fixed. One end of a pair of levers 48 and 49 is rotatably connected to a protrusion formed near the base end of the fixed roving yarn guide 47, and the movable roving yarn guide 50 is connected to the other end.
Is rotatably connected by a pin. The base end of the air cylinder 51 is located near the base end of the fixed roving guide 47 and the support shaft 5
2 rotatably supported by the piston rod 51
a is rotatably connected to one lever 48 via a pin. Fixed roving guide 47 and movable roving guide 50
V-shaped guide grooves 47a and 50a are formed at the tip of the. The movable roving guide 50 is moved in parallel with the support shaft 21 by the operation of the air cylinder 51, and when the piston rod 51a is located at the retracted position, the gap between the guide grooves 47a and 50a is the opening 15a of the roving guide 13. , 15b at the roving thread hooking position corresponding to the spacing between the guide grooves 47a and 50a, with the piston rod 51a at the protruding position. Further, the fixed roving yarn guide 47 and the movable roving yarn guide 50 are rotated together with the support block 44 by the drive of the motor 41 and are arranged at three positions of a standby position, a pitch conversion position and a roving yarn hooking position. ing. The motor 41 has three detection sensors (not shown) provided on the support bracket 40.
The driving is stopped based on the detection signal from. The support block 44 has a movable roving guide 5
A cover 53 is attached to prevent the roving R from being entangled with the levers 48 and 49 when the roving R moves along with the movement of 0.

Next, the operation of the apparatus configured as described above will be described. In the spinning machine to which this roving method is applied, spinning is performed with the medium-ball roving bobbin M and the full bobbin F hung on the roving winding rails 2a and 2b every other set along the longitudinal direction. Continuing, when the middle-ball roving bobbin M becomes the small-sized roving bobbin E which is almost empty, the roving is changed. When the roving change time comes, the roving changer 20 intermittently moves from one end of the spinning machine stand to start the roving change operation. Roving changer 20
Stops at a predetermined roving changing position, removes the full bobbin F suspended from the carrier 7 from the bobbin hanger 7a, and transfers it from the small ball roving bobbin E being spun by the roving splicing device (not shown) to the draft part 17. The roving joining operation of the continuous roving R and the roving of the full bobbin F is performed. After the completion of the roving yarn splicing, the small ball roving bobbin E is suspended from the roving winding rails 2a and 2b by a roving yarn exchanging device (not shown) from the position shown by the chain line in FIG. 1 (a) to the outside of the creel 1 shown by the solid line. Will be moved. Since the roving guide 13 is arranged in the middle of the roving bobbins that are suspended in two rows inside and outside, the inner small-ball roving bobbin E interferes with the roving guide 13 during the process of taking out the small roving bobbin E. , Roving guide 13
Is rotated from the reference position around the support shaft 8 and the small ball roving bobbin E moves without hindrance. Then, the full bobbin F having completed the roving joining is a full bobbin transfer device 54 constituting a roving changing device. The roving thread hooking operation is performed with the peg 55 mounted. When the roving thread hooking device 19 is placed at the standby position, the fixed roving thread guide 47 is placed in the state of the chain line indicated by the arrow A in FIG. 5, that is, in the state of extending downward. Further, the piston rod 51a is held at the projecting position, and the movable roving guide 50 is provided with the guide grooves 47a, 5a.
The distance of 0a is held at the roving thread scooping position where it can be engaged with the two roving threads R extending from both full bobbins F to the trumpet 18.

From this state, the motor 34 is first driven to rotate normally, and the support plate 31 is moved from the standby position shown by the chain line in FIG. 8 to the roving scooping position shown by the solid line via the lever 35, the connecting rod 36 and the drive arm 28. To be done. Next, the motor 41 is driven to rotate in the forward direction, the roving guides 47, 50 are rotated counterclockwise in FIG. 5 via the toothed pulleys 43, 45 and the toothed belt 46, and the full bobbin F moves to the draft part 1
While scooping the roving thread R continuous with 7, the state is indicated by the chain line in FIG. 5, indicated by the arrow B, that is, it is rotated to a pitch conversion position that extends substantially horizontally. At this time, the movable roving guide 50 is shown in FIG.
It is located at the position shown by the chain line in (b).

Next, the air cylinder 51 is operated and the piston rod 51a is placed in the retracted position, and the movable roving guide 4
7 is moved to the roving hooking position where the distance between the guide grooves 47a and 50a corresponds to the distance between the openings 15a and 15b of the roving guide 13 (solid line in FIG. 1B). Next, the motor 41 is further driven in the normal direction to rotate both roving guides 47, 50 to the roving hooking position shown by the solid line in FIG. Next, the motor 34 is driven in the reverse direction so that both guide grooves 47a and 50a are moved to the roving guide 13.
The support plate 31 is laterally moved to a position where the support plate 31 faces the openings 15a and 15b (see FIG. 1C). Next, the air cylinder 25 is actuated, the piston rod 25a is arranged at the projecting position, the base 23 is tilted, and the entire roving hooking device 19 tilts forward as shown by the chain line in FIG. As a result, both guide grooves 47a and 50a are moved above the roving guide 13 to the inside of the creel 1 from the roving guide 13, and the downstream portion of the roving R which is in engagement with both roving guides 47 and 50 is the opening 15a. , 15b
From inside the roving guide 13 (see FIG. 1).
(State of (d)).

Next, the motor 34 is driven in the normal direction to move the support plate 31 in the lateral direction, and the roving R is engaged with the engaging portions 16a,
It is guided to the inside of 16b. Next, the air cylinder 25 is actuated to place the piston rod 25a in the retracted position, the board 23 is returned to the horizontal position, and the roving thread hooking device 19 as a whole is shown in FIG.
Return to the position indicated by the solid line. As a result, both roving guides 4
The engagement between 7, 50 and the roving R is released, and the roving R is guided to the trumpet 18 via the roving guide 13. Next, the motor 41 is reversely driven to rotate both roving guides 47 and 50 to a standby state in which they extend downward, and then the motor 34 is reversely driven to support plate 31.
Is placed in the standby position. Next, the air cylinder 51 is actuated, the piston rod 51a is arranged at the protruding position, the movable roving yarn guide 50 is arranged at the roving yarn scooping position, and one cycle of the roving yarn hooking operation is completed.

As described above, one roving guide 13
Since the two roving threads R are hooked at the same time to each other, even if the roving guide 13 is slightly dislocated, the roving threads R
Is surely the openings 15a and 15b of the roving guide 13.
Is introduced into the inside of the roving guide 13. In addition, even if the roving hook fails, it does not adversely affect the roving yarns other than the roving yarn replacement target.

The peg 55 is rotatably driven by the servo motor 56, and the roving R continuous from the full bobbin F to the draft part 17 is engaged with the roving guides 47 and 50. In order to prevent excessive tension from being applied to the roving R due to the rotation of the roving guides 47 and 50 and the tilting of the roving hooking device 19 until the roving is applied, the full bobbin F is provided with a roving. Along with the movement of the guides 47, 50, the roving R is rotated in a direction of sending out at a speed higher than the spinning speed.

Next, the full bobbin transfer device 54 is operated, and as shown in FIG. 2A, the full bobbin F after the completion of the roving thread arrangement is arranged in a direction crossing the longitudinal direction of the creel 1. After that, both full bobbins F are suspended from the roving winding rails 2a and 2b as shown in FIG. 2 (b). The full bobbin F suspended on the roving winding rail 2b inside the creel 1 interferes with the roving guide 13 during movement, but the roving guide 13 is rotated clockwise with the support arm 9 as shown in FIG. Passes, and after passing the full bobbin F, is returned to the reference position by the biasing force of the torsion coil spring 11.

As described above, in this embodiment, the roving thread hooking device 19 is moved laterally along the running direction of the roving thread changer 20 to move between the standby position and the roving thread hooking work position. Unlike the conventional device in which the standby position is provided in the roving yarn changing machine, interference with other devices provided in the roving yarn changing machine is reduced, and inspection and maintenance of the device are facilitated.

Further, in the conventional apparatus, the shining bar is attached to the slide plate that slides along the slide bar for a long distance, and the shining guide member (the roving guide) is attached to the tip of the shining bar.
Since it is attached, it takes time to move the Shino guide member from the standby position to the Shino hook (coarse thread hook) position. However, in the apparatus of this embodiment, the roving thread guide is disposed at the roving thread hooking position by the rotational movement, so that high-speed operation is facilitated, the time required for roving thread hooking can be shortened, and the roving thread replacement time can be shortened. ..

(Second Embodiment) Next, a second embodiment will be described with reference to FIGS. The roving hooking device 19 of the above embodiment
Can smoothly perform the crocheting operation on the left creel of the spinning machine, but interferes with the crocheting operation on the right creel. This is because, in general, the winding direction of the roving yarn of the roving bobbin is one direction, and therefore, the full bobbin F hung from the transport body 7 on the transport rail 6 as the preliminary roving winding rail at the time of roving the roving yarn is drawn from the full bobbin F. The route of the roving R leading to is different on the left and right of the spinning frame. Therefore, if the roving thread hooking device 19 of the above-described embodiment is directly applied to the roving thread hooking work on the right side of the spinning machine stand, smooth roving thread hooking is difficult.

In the apparatus of this embodiment, both roving thread guides are reciprocally movable along the longitudinal direction of the creel 1 so that the cruising thread can be smoothly applied to the right creel. The point is different from the above embodiment. Figure 9
The movable roving guide 50 is attached to the support bracket 57 fixed to the support block 44 via the levers 48 and 49 as shown in FIG.
8 is attached via levers 59 and 60. The base end of the air cylinder 51 is attached to the support bracket 57 by the support shaft 5.
2 rotatably supported by the piston rod 51
a is rotatably connected to the lever 48 via a pin. The levers 48 and 59 are connected via a connecting rod 61 so as to be integrally rotatable. With the operation of the air cylinder 51, a roving rake position shown by a chain line in FIG. 9 and a position where the space between the guide grooves 47a, 58a shown by a solid line corresponds to the openings 15a, 15b of the roving guide 13. Is located in.

As a result, both movable roving yarn guides 50 and 58 arranged at the roving yarn scooping position engage with the roving yarn R connected to the full bobbin F as shown in FIG. When the piston rod 51a is placed in the retracted position by the operation, the gap between the two movable roving guides 50, 58 is placed at a position corresponding to the openings 15a, 15b, as shown in FIG. 10 (b). Next, by driving the motor 34, both the movable roving guides 50 and 58 are brought into a state corresponding to the roving guide 13 shown in FIG.

The present invention is not limited to the above-described embodiments. For example, after the completion of the roving thread engagement, the roving thread hooking device 19 is moved to the standby position with the movable roving thread guide positioned at the roving thread rake position. Instead of holding the movable roving thread guide, the roving thread hooking device 19 is held in the standby position while holding the movable roving thread guide in the roving thread hooking position, and the movable roving thread guide is placed in the roving thread rake position at the start of the roving thread hooking operation. Good.

[0034]

As described above in detail, according to the present invention, it is possible to reliably carry out roving threading without disposing the roving guide at a strictly accurate position. Further, there is no interference with the roving yarn other than the roving yarn bobbin to be replaced when the roving yarn is hung, and the spun yarn quality can be surely prevented from deteriorating without applying excessive force to the roving yarn.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing a roving thread hanging step.

FIG. 2 is a schematic plan view showing a step of suspending a full bobbin after the completion of roving thread hanging on a roving winding rail.

FIG. 3 is a plan sectional view showing a roving guide.

FIG. 4 is a perspective view of the roving thread hooking device of the first embodiment.

FIG. 5 is a schematic side view showing a relationship between a roving thread hooking device, a roving guide, and a roving thread bobbin suspended on a creel.

FIG. 6 is a rear view of the roving guide.

FIG. 7A is a front view showing a mounting state of a roving guide, and FIG. 7B is a side view of a roving guide.

FIG. 8 is a schematic rear view of the roving thread hanging device.

FIG. 9 is a rear view of the roving guide of the second embodiment.

FIG. 10 is a schematic plan view showing the positional relationship between the full bobbin, the roving guide and the roving guide on the right side of the spinning machine base.

FIG. 11 is a perspective view showing a roving guide and a roving thread hooking state in a conventional roving thread hooking method.

FIG. 12 is a plan view showing a positional relationship between a roving guide and a small bobbin in another conventional roving thread hanging method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Creel, 2a, 2b ... Rough thread winding rail, 6 ... Conveying rail, 13 ... Roving guide, 15a, 15b ... Opening part, 16a, 16b ... Locking part, 17 ... Draft part,
Reference numeral 19 ... roving thread hooking device, 20 ... roving thread changer, 47 ... fixed roving thread guide, 50 ... movable roving thread guide, 47a, 50a, 58
a ... Guide groove, 58 ... Second movable roving thread guide, F ... Full bobbin, M ... Medium ball roving bobbin, E ... Small ball roving bobbin, R ...
Roving.

Claims (1)

[Claims] 1. A roving bobbin suspended in two rows inside and outside along a creel so as to be rotatable about a spindle and always held at a predetermined position during normal spinning by a biasing means. The roving yarn spun from two inner and outer roving bobbins to be replaced with a roving guide that is arranged in a state and has two independent openings and locking parts through which the roving is introduced. A crocheting method in which two full bobbin crochets supported outside the creel with the crochet ends spliced together are simultaneously crocheted by a crocheting device equipped in the roving changer. And guide the middle portion of the roving yarn being fed from both full bobbins to the draft part to the guide groove of the roving yarn guide, and then move at least one of the roving yarn guides to engage both roving yarn guides. After setting the spacing of a certain roving thread so that it corresponds to both openings of the roving guide, Move the yarn guide to the position where its guide groove is located above the roving guide to introduce the roving yarn into both openings of the roving guide, and then move both roving guides along the longitudinal direction of the creel. Guide the roving to the inside of the locking part, then retract both roving guides to hang the roving on the roving guide and release the engagement between the roving guide and the roving guide to the roving guide of the spinning machine. How to crochet.