JP2770411B2 - Roving splicer for spinning machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a roving splicing device provided in an automatic machine that moves along a longitudinal direction of a spinning machine to perform an operation.

[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 is generally performed manually, but in recent years, automation of roving splicing operation has been proposed (for example, JP-A-62-57957, JP-A-62-162034, and the like). ).

In the conventional apparatus, a Shino (roving) changing machine that moves along a spinning machine stand holds a Shino (roving) end ejected from a full bobbin to be replaced with a Shino (roving) and feeds it to a trumpet. Shino (roving yarn) equipped with a Shinotsu (roving yarn splicing) head that superposes on the Shino (roving yarn) of a Kodama bobbin, releases the grip of the Shino end and cuts the Shino of the Kodama bobbin in the polymerization state A connection device is provided. The roving splicing device includes a mechanism for moving the roving splicing head between a retracted position that does not hinder movement of the roving yarn changer and a work position above the draft part for performing the roving splicing operation. And a mechanism for rotating the cam at a working position is constituted by a cam link mechanism interlocked with each other.

[Problems to be Solved by the Invention] Generally, one roving yarn changing machine has a capability of coping with roving yarn changing of 10 to 40 spinning machine units. Also, in spinning mills, not all spinning machines are operated under the same spinning conditions (spindle speed, spinning speed, draft rate, number of twists, etc.). Sometimes it is done frequently.
Then, the gauge of the draft roller may be changed when the spinning conditions are changed. The gauge setting of the draft roller is performed based on the front roller, and by changing the gauge, the position of the trumpet together with the back roller is moved in a direction orthogonal to the machine base longitudinal direction. Even when cotton is used as the spinning raw material, the amount of change in the position of the back roller due to the change in roller gauge is 15 to 20 mm depending on the type of cotton. Therefore, the position of the back roller and the trumpet is further rearward than in the case of cotton.

The roving splicing device includes a cam link mechanism in which a mechanism for moving the roving splicing head between the retracted position and the working position and a mechanism for rotating the roving splicing head at the retracted position are interlocked with each other. In a state where the roving splicing head is arranged at the work position, the roving is reliably inserted into the trumpet with one set roller gauge. However, since the length of the link of the link mechanism does not change, the roving cannot be inserted into the trumpet when the position of the trumpet is changed due to the change of the roller gauge. Therefore,
One roving machine cannot handle a plurality of spinning machines having different roller gauges, and it is necessary to prepare a plurality of roving machines according to the roller gauge. This not only causes an increase in capital investment and a decrease in the operating efficiency of the roving machine,
There is a problem that a device is required to prohibit roving yarn changers that do not support roller gauges from performing roving yarn changing work on the spinning machine stand. There is a disadvantage that it cannot be done.

The present invention has been made in view of the above problems,
An object of the present invention is to provide a roving yarn splicing device for a spinning machine that can surely succeed in a roving yarn splicing operation even in a roving yarn splicing operation of a spinning machine having a different draft part roller gauge.

[Means for Solving the Problems] In order to achieve the above object, according to the present invention, a roving splicing apparatus provided in an automatic machine that moves along the longitudinal direction of a spinning frame and performs an operation includes: A roving splicing head for connecting a roving suspended from a roving wound during spinning from a roving wound on a creel of a spinning machine to a trumpet of a draft part, and a roving drawn from a preliminary roving wound to be replaced with the roving wound. Is provided on the support arm, and the roving splicing head is movably provided at a retracting position that does not hinder the traveling of the automatic machine and at a work position near the upper part of the draft part for performing the roving splicing operation, and corresponds to the gauge of the draft part. In addition, a driving device is provided which can change the working position of the roving splicing head.

Also, by moving the support arm in a plane orthogonal to the moving direction of the automatic machine, the roving splicing head is moved and arranged between the retreat position and the working position, so that the working position of the roving splicing head can be changed. As a configuration, a part of the support arm may be configured to be extendable and contractable, and a driving device for driving the extension and contraction mechanism may be provided.

The spinning frame is provided with an information transmitting unit for transmitting information on the gauge setting conditions of the draft part, and the automatic machine is provided with a reading device for reading the information of the information transmitting unit, and a working position corresponding to the gauge of the draft part. And a control device that outputs a drive signal to the drive device so that the support arm can be moved to the drive device.

[Operation] In the roving splicing device of the present invention, the roving splicing head is moved and arranged by the operation of the support arm between a retreat position where the roving splicing head does not hinder the traveling of the automatic machine and a work position near the upper part of the draft part for performing the roving splicing operation. Is done. When the roller gauge of the draft part is changed, the working position of the roving splicing head is changed to a position having a predetermined positional relationship with the trumpet corresponding to the roller gauge, so that the roving splicing operation is always performed smoothly. Done.

Further, in the apparatus according to the second aspect, prior to the roving operation, the driving device of the expansion and contraction mechanism is operated to partially expand and contract the support arm, and the support arm has a predetermined length corresponding to the roller gauge. Is changed to Therefore, even when the roller gauge is changed, the roving splicing head is arranged at a position having a predetermined positional relationship with the trumpet during the roving splicing operation, so that the roving splicing operation is always performed smoothly.

Further, in the apparatus according to the third aspect, the reading device provided in the automatic machine reads the information on the gauge setting condition of the draft part of the spinning machine from the information transmitting unit provided in the spinning frame. Then, a drive signal is output from the control device to the drive device based on the information, and the drive is automatically controlled so that the support arm can be adapted to a work position corresponding to the gauge of the draft part.

Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 4, an inter-machine traveling rail 2 is laid on one side of the spinning frame 1 so as to be orthogonal to the longitudinal direction of the spinning frame 1. A roving yarn changer 4 that moves along a rail 3 extending on both left and right sides of the spinning frame 1 to perform a roving change operation is provided by a transporter 5 that moves along the inter-machine traveling rail 2. After being transported to a position corresponding to the spinning machine stand 1 that is mounted on the left and right sides and needs roving replacement work, the connection rail 6 mounted on the transport vehicle 5 is connected to the rail 3 at this position, The roving yarn changing operation and the roving yarn joining operation are performed by moving along the rail 3.

In this embodiment, the roving change operation is performed by the method disclosed in Japanese Patent Application Laid-Open No. 61-119728. That is, spinning is started in a state in which bobbins and bobbins are alternately hung on roving winding rails extending in two rows on the right and left sides of the creel of the spinning frame 1, respectively. When the bobbin is approaching empty, the roving yarn changer 4 sequentially takes out two inner and outer empty bobbins from one end side to the other end side of the machine sequentially every other row, and holds the spare bobbin suspended on the spare roving winding rail. An exchange operation with the roving winding (full bobbin) F (a roving replacement operation) and a roving splicing operation are performed. Therefore, the first stop position of the roving yarn changing machine 4 is different depending on whether the starting position of the roving yarn changing operation is an odd-numbered row or an even-numbered row.

A pair of indicator lamps 7a and 7b are provided on both sides of the gear ends G and E of the spinning frame 1 to indicate whether the roving replacement row is an odd row or an even row.
On both sides of E, information transmission units 8 for transmitting information on the gauge setting conditions of the draft part are provided. The information transmission unit 8 includes a support rail 9 extending in the machine base longitudinal direction, and a plurality of (two in this embodiment) fixedly mounted on the support rail 9 at two or more predetermined positions (in this embodiment, respectively). 2) dogs D1 and D2.

On the other hand, the roving thread changer 4 detects the indication lamps 7a and 7b to determine whether the roving changing row is an odd row or an even row. A pair of sensors S1 and S2 as a reading device for reading information of the information transmitting unit 8
(Comprising a proximity switch).

Next, the roving splicing device 11 provided in the roving yarn changer 4 will be described. The roving splicer 11 has a support arm main body 13 fixed at its base end to be rotatable integrally with a rotating shaft 12 arranged in parallel with the longitudinal direction of the spinning frame during roving splicing. A sector gear 16 meshing with a pinion 15 fitted to a drive shaft of an arm drive motor 14 is fitted and fixed to the rotation shaft 12, and the support arm body is driven by the drive of the arm drive motor 14.
13 is rotatably arranged between a working position and a retracted position.

A pair of support brackets 17 are fixed to the front side (right side in FIG. 2) of the support arm body 13 with bolts 18 in a state orthogonal to the support arm body 13, and a ball screw mechanism is formed between the support brackets 17. Screw shaft 19 is bearing 20
It is rotatably supported via. Support arm body 13
A motor 22 capable of driving forward and reverse rotation is mounted near a base end of the screw shaft 19 via a bracket 21. A base end of the screw shaft 19 is connected to a drive shaft of the motor 22 via a flexible coupling 23 so as to be integrally rotatable. Have been. As the motor 22, a servo motor or a stepping motor is used. or,
A guide groove 24 is formed on the side of the support arm body 13 where the screw shaft 19 is disposed, and an elongated hole 25 communicating with the guide groove 24 is formed on the opposite side. A substantially U-shaped support member 26 is slidably fitted on the lower side of the guide groove 24, and penetrates a rectangular cylindrical slide metal 27 slidably housed in the long hole 25. It is supported on the support arm body 13 by bolts 28. The support arm body 13 and the support member 26 constitute a support arm. Support member
A ball nut 29 of a ball screw mechanism is fitted and fixed to 26, and the support member 26 is reciprocated along the guide groove 24 by forward and reverse rotation of the screw shaft 19. The screw shaft 19, the ball nut 29, and the support member 26 constitute an extension mechanism, and the motor 22 constitutes a driving device for driving the extension mechanism. The drive of the motor 22 is controlled by a drive signal output from a control device (not shown).
The position of the support member 26 corresponding to the gauge setting condition of the draft part is calculated based on the signal from 2, and a drive signal is output to the motor 22 so as to dispose the support member 26 at the position.

At the tip of the support member 26, as shown in FIG.
A rotating shaft 30 is supported so as to protrude to the side of 26, and a roving splicing head drive motor 31 is fixed to a base end side of the support member 26 via a bracket 32. Roving splicing head drive motor
A motor that can be driven to change the speed, such as a servo motor or a stepping motor, is used as the motor 31. A toothed pulley 33 is fitted and fixed to the rotation shaft 30 at a position corresponding to the inside of the support member 26 so as to be integrally rotatable, and is fitted to the toothed pulley 33 and the drive shaft of the roving splicing head drive motor 31. A toothed belt 35 is wound around the toothed pulley 34. or,
A roving splicing head 36 is integrally rotatably fixed to a portion of the rotating shaft 30 that protrudes to the side of the support member 26. It is configured to be pivotally disposed between an operation position protruding forward of the thirteen and a storage position parallel to the support arm body 13.

The roving splicing head 36 is formed as a pair of two weights, and two roving splicing head bodies 37 are fitted to the rotating shaft 30 so as to be integrally rotatable as shown in FIGS. They are connected so as to maintain a parallel state with each other. A support pin 39 is provided near the leading end of the roving splicing head main body 37.
It is rotatably mounted so as to protrude from both upper and lower sides of 37. A first catcher 40 is attached to a lower end of each support pin 39 so as to be integrally rotatable at a substantially central portion thereof, and levers 41a and 41b are provided at an upper end at one end thereof in a state extending in parallel with a base end side of the first catcher 40. It is fixed so as to be integrally rotatable. A motor 42 is fixed to the connection plate 38 at a position corresponding to an intermediate portion between the two support pins 39, and a drive lever 43 is fixed to a drive shaft 42a of the motor 42 so as to be integrally rotatable. Connecting levers 44a and 44b are rotatably connected at one ends thereof via pins 45 to the base ends of the levers 41a and 41b. Elongated holes 46a, 46b are formed at the other ends of the connecting levers 44a, 44b, and a driving pin 47 protruding from the tip of the driving lever 43 is provided with an elongated hole 46a.
A link mechanism is formed by being inserted into a and 46b.

A pin 48 protruding from the tip of the first catcher 40 has a grip block 49 forming a grip portion, and the grip portion 49a has a first
Gripping surface 37 of roving splicing head main body 37 from the side of catcher 40
It is rotatably supported so as to protrude to the a side. A hole 50 is formed in the lower surface of the grip block 49, and an engaging pin 51 protruding from the tip of the first catcher 40 is loosely inserted into the hole 50. Therefore, in the apparatus of this embodiment, even if the gripping surface 37a of the roving splicing head main body 37 and the side surface of the first catcher 40 facing the gripping surface 37a do not become parallel to each other due to product variation, the gripping block 49 is not required. Is rotatable by the gap between the engagement pin 51 and the hole 50, the grip 49a is rotated so as to be parallel to the gripping surface 37a with the rotation of the first catcher 40, and the roving is securely removed. Is grasped.

A spring support portion 52 is formed on the roving splicing head main body 37 at a position corresponding to the base end of the first catcher 40, and the spring support portion 52 and a guide pin 53 projecting from the base end of the first catcher 40 are formed. A coil spring 54 for urging the first catcher 40 to rotate in the roving direction is interposed therebetween. Also, the roving splicing head body
A support pin 55 is rotatably supported at a position corresponding to the support pin 39 so as to protrude from a lower surface of the roving splicing head main body 37 at a position corresponding to the support pin 39. A second catcher 56 having a grip portion 56b for gripping the new roving thread R2 in cooperation with the new roving thread gripping portion 40b provided at the second end is rotatably fixed.

The second catcher 56 has a receiving portion 56a formed on the side opposite to the side facing the first catcher 40, and the second catcher 56 has a second portion between the receiving portion 56a and the spring support portion 57 provided on the roving splicing head main body 37.
A coil spring 5 for urging the catcher 56 to rotate to a side where the grip portion 56b comes into contact with the new roving thread grip portion 40b of the first catcher 40.
8 are interposed. The coil spring 58 has a smaller urging force than the coil spring 54 for urging the first catcher 40 to the gripping side. Roof splicing head body 37
Is provided with a stop pin 59 for restricting rotation of the second catcher 56. Each of the second catchers 56 has a pin 60 protruding from its base end, and an end of a connecting lever 61 is rotatably connected to each pin 60. A rotary solenoid 62 is fixed to the base end of one roving splicing head main body 37, and a base end of a second catcher operating lever 63 is fixed to a drive shaft of the rotary solenoid 62 so as to be rotatable once. The distal end of the second catcher operating lever 63 is connected to a pin 60 of a second catcher 56 provided on the one roving splicing head main body 37 side.
It is rotatably connected via a.

Further, behind the grip portion 49a of the first catcher 40, the new roving thread R2 guided between the new roving thread grip portion 40b and the grip portion 56b of the second catcher 56 enters deeper than a predetermined position. A regulating member 64 for regulating is fixed. As shown in FIG. 2, a cover 65 is mounted on the upper surface of the roving splicing head main body 37 near the rear, and a back roller 66 of the draft part 66 is mounted on the lower surface.
A sensor S3 for detecting the rotation speed of a is mounted. A back roller 66 is provided at the tip of the support arm body 13.
Sensor S4 for detecting roving between a and middle roller 66b
Is installed.

The roving splicing head 36 configured as described above operates as follows to perform the grip release operation of the new roving R2 and the old roving R1. When the drive lever 43 is rotated counterclockwise by the drive of the motor 42 from the state shown in FIG. 7A in which the first catcher 40 and the second catcher 56 are closed, the connection levers 44a, 44b
The first catcher 40 is rotated clockwise through the
As shown in FIG. 3C, the gripper 49a of the first catcher 40
Thus, a gap is formed between the roving splicing head body 37 and the gripping surface 37a and between the new roving thread gripping portion 40b of the first catcher 40 and the gripping portion 56b of the second catcher 56. In this state, due to the rotation of the roving splicing head 36, the roving can enter the gap between the new roving grasping portion 40b of the first catcher 40 and the grasping portion 56b of the second catcher 56 until the roving engages with the regulating member 64. Becomes

When the drive lever 43 is rotated clockwise by the drive of the motor 42 from the state of FIG. 7C, the first catcher 40 is rotated counterclockwise, contrary to the above. 1st catcher 40
When the drive of the motor 42 is stopped at the time when the drive lever 43 is rotated to a position where the new roving grasping portion 40b of the second catcher 56 contacts the grasping portion 56b of the second catcher 56, the gripping state of the new roving R2 (shown in FIG. ). When the drive lever 43 is further rotated clockwise by driving the motor 42 from this state, FIG. 7 (a)
And returns to the gripping position for gripping the old and new rovings shown in FIG. or,
When the rotary solenoid 62 is driven from the state shown in FIG. 7 (a), the second catcher operating lever 63 is rotated clockwise in FIG. 7 and the second catcher 56 is moved to the first catcher 40.
And is rotated counterclockwise independently. As a result, as shown in FIG.
b and the holding portion 56b of the second catcher 56 are separated from each other to be in an open state.

 Next, the operation of the device configured as described above will be described.

On the support rail 9 of the information transmission unit 8 of the spinning frame 1, dogs D1 and D2 are fixedly arranged at predetermined positions corresponding to the setting conditions of the roller gauge. When the roving changer 4 stops at a predetermined position corresponding to the carriage ends G and E, the dogs D1 and D2 can be disposed at two positions: a position corresponding to the sensors S1 and S2 and a position not corresponding to the dogs D1 and D2. Four types of setting conditions can be transmitted by combining the fixed positions of D2. The type of gauge setting is 4
In the case where the number of dogs and the number of sensors are more than three, the number of dogs and sensors can be easily adjusted to three or more. The roving yarn changer 4 is transported by the transport vehicle 5 to a position corresponding to the spinning machine stand 1 requiring roving yarn replacement, and the connection rail 6 mounted on the transport vehicle 5 is connected to the rail 3 at the position. Then, it moves along the rail 3 and first stops at a predetermined position corresponding to the gear ends GE. In this state, the sensors S1 and S2 read the arrangement state of the dogs D1 and D2, and output a read signal to the control device.
The control device calculates the position of the support member 26 corresponding to the gauge setting condition of the draft part based on the signals from the sensors S1 and S2, and data on the position of the support member 26 stored in a memory built in the control device. In comparison, when the support member 26 is not located at the position, a drive signal is output to the motor 22 so that the support member 26 is located at the position. The motor 22 is driven based on a drive signal from the control device, the screw shaft 19 is rotated by a predetermined amount, and the support member 26 is
It is slid along 24 to a predetermined position. Thereby, the length of the support arm is adjusted to a length corresponding to the roller gauge.

When the roving thread changer 4 stops at a predetermined position corresponding to the gear ends G and E, the roving thread changing row discriminating sensors 10a and 10b enter a state corresponding to the indicator lamps 7a and 7b, and the discriminating sensors 10a and 10b
The control device of the roving thread changer 4 stores an odd number or an even number of rows requiring roving change in response to the signal from the roving changer 4, and the roving changer 4 is moved correspondingly.

Next, the roving splicing operation will be described with reference to FIGS. 8 (a) to 8 (h). In the roving splicing operation, the full bobbin F serving as the preliminary roving winding is removed from the preliminary roving winding rail (not shown), and as shown in FIG. This is performed while being mounted on the peg 67. A suction nozzle 68 is arranged at a position corresponding to the roving end of the full bobbin F as shown by a chain line in FIG.
Is rotated in the direction in which the roving is fed from the full bobbin F, and the roving end is sucked into the suction nozzle 68. Next, the suction nozzle
68 moves down to the position shown by the solid line, and the new roving R2 is pulled out from the full bobbin F. In this state, the roving splicing head drive motor 31 is driven to rotate forward, and the roving splicing head 36 is moved in FIG.
8B, the new roving yarn R2 is guided into the roving splicing head 36 as shown in FIG. 8 (b). In this state, the first catcher 40 is rotated to the new roving grasping position, and the new roving R2 is grasped by the roving splicing head 36. Next, the roving splicing head drive motor 31 is driven to rotate in the reverse direction, and the roving splicing head 36 is rotated clockwise to a position where the tip thereof approaches the suction nozzle 68 as shown in FIG. Next, the roving splicing head drive motor 31 is driven to rotate forward, and the roving splicing head 36 is rotated.
Is rotated in a counterclockwise direction so that its tip is separated from the suction nozzle 68. As a result, the new roving yarn R2 sucked into the suction nozzle 68 is acted on by a roving cutting member (not shown) of a known configuration (for example, Japanese Patent Publication No. 47-51649) provided inside the suction nozzle 68. As a result, the state is cut and the state shown in FIG. 8D is obtained.

Next, when the arm drive motor 14 is driven forward in this state, the rotation shaft 12 is rotated clockwise in FIG. 8D via the pinion 15 and the sector gear 16, and the support arm body 13 is rotated.
Is tilted toward the draft part 66, and the driving of the arm drive motor 14 is stopped when the roving splicing head 36 is disposed at a work position near and above the draft part 66. In this state, as shown in FIG. 1, the sensor S4 is disposed at a position corresponding to between the back roller 66a and the middle roller 66b.
It is possible to detect the presence or absence of the roving traveling between 6a and 66b. On the other hand, when the arm drive motor 14 is driven, the roving splicing head drive motor 31 is also driven to rotate forward, and the toothed pulley 34 and the toothed belt
The roving splicing head 36 is rotated in the counterclockwise direction together with the rotating shaft 30 via the pulley 35 and the toothed pulley 33, and as shown in FIG. The roving thread R1 is led. When the roving splicing head 36 moves in the direction approaching the draft part 66 due to the tilting of the support arm body 13, it prevents a large tension from acting on the new roving thread R2 connected from the full bobbin F to the roving splicing head 36. Roving splicing head
In synchronization with the movement of 36, the peg 67 moves from the full bobbin F to the new roving R2.
Is rotated in the direction in which the is sent out.

After the old roving yarn R1 is gripped by the roving splicing head 36 in the state shown in FIG. 8 (e), the roving splicing head driving motor 31 is driven to rotate forward, and the roving splicing head driving motor 31 is driven forward. The old roving R1 is cut by rotating the roving continuous head 36 in the counterclockwise direction as shown in FIG. As a result, the end of the old roving R1 connected to the draft part 66 via the trumpet 69 falls downward. After the cutting of the old roving R1 is completed, the roving splicing head 36 is moved to the old roving R1.
Is released. In this state, the sensor S3 is in a state corresponding to the back roller 66a, and based on a detection signal from the sensor S3, a control device (not shown) including a microcomputer determines the rotation speed of the back roller 66a, that is, the roving feed speed. Calculate.

After the cutting of the old roving R1, the control device calculates the turning timing and the turning speed of the roving splicing head 36 corresponding to the spinning conditions, based on the roving feed speed. And the old roving being spun
After a lapse of a predetermined time at which the length of the roving end of R1 becomes a suitable length for the roving splicing, the roving splicing head drive motor 31 is driven in reverse to rotate the roving splicing head 36 in the clockwise direction. The end of the new roving thread R2 gripped by the roving thread splicing head 36 is inserted into the trumpet 69 as shown in FIG. The roving splicing head 36 continues to rotate until the end of the new roving R2 abuts on the back roller 66a, preferably until a part thereof is gripped between the back rollers. Rotation speed of roving splicing head 36 is new roving R2
Is controlled until the end of the old roving thread R1 reaches a position slightly before the back roller 66a, and thereafter, becomes faster than the feed speed of the old roving R1. The end of the new roving thread R2 is the back roller 66
a new roving yarn R by the roving splicing head 36
The gripping of No. 2 is released, and thereafter, the spinning is continued by the new roving R2 of the full bobbin F.

After confirming that the sensor S4 does not detect the cutting of the roving traveling between the back roller 66a and the middle roller 66b for a predetermined time after releasing the grip of the new roving R2 by the roving splicing head 36, the arm drive is performed. The motor 14 is driven to rotate in the reverse direction, and the support arm body 13 is rotated counterclockwise to be located at the retracted position. Thereafter, the roving splicing head drive motor 31 is driven to rotate in the reverse direction, and the roving splicing head 36 is rotated and disposed in a storage state parallel to the support arm body 13 as shown in FIG.

During the elapse of the predetermined time, the sensor S4
When the cutting of the roving running between a and the middle roller 66b is detected, that is, when the splicing of the roving fails, the motor 42
Is driven and the new roving yarn R2 is immediately gripped by the roving yarn joining head 36. Next, the arm drive motor 14 is driven to rotate in the reverse direction, the support arm body 13 is rotated counterclockwise, and the new roving R2 is cut. This prevents the roving from being wound around the back roller 66a and causing the back roller 66a to be damaged.

After completion of the roving splicing operation, replacement of the full bobbin F to which the roving has been spliced and the remaining roving bobbin after the roving has been cut is performed, and then the roving yarn changer 4 moves to the next work position. I do. Less than,
Similarly, the roving splicing and the roving change operation are sequentially performed, and the roving splicing and the roving change operation of the entire machine are completed.
When a position corresponding to the out-end OE is reached, a sensor S5 provided in the out-end OE detects a dog D3 provided in the roving yarn changer 4, and the roving yarn joining and roving yarn changing operation are performed. Completion is confirmed. Then, based on the detection signal from the sensor 5, the roving yarn changer 4 moves along the rail 3 and
To the position corresponding to the spinning frame 1 that needs to be replaced with a roving yarn.

When the roller gauge of the spinning frame 1 that requires roving is different from that of the spinning frame 1 that previously performed roving change (for example, as shown in FIG. 9, the roller gauge becomes large). In the case, when the roving yarn changer 4 is stopped at a predetermined position corresponding to the gear ends G and E, the motor 22 is driven by a drive signal from the control device so that the support arm has a length corresponding to the roller gauge. It is extended. In this state, when the roving splicing head 36 is located at the operating position at the roving splicing operation position, the rotating shaft 30 which is the center of rotation of the roving splicing head 36 is trumpet 69 as shown in FIG. And a predetermined positional relationship, and the roving splicing operation is smoothly performed in the same manner as described above.
When changing the gauge, the rotation angle of the support arm body 13
The rotation angle of the roving splicing head main body 37 may be changed simultaneously with the expansion and contraction of the support member 26.

Further, the roving splicing head 36 of this embodiment has the second
Since the catcher 56 can operate independently of the first catcher 40, the old roving is not a roving splicing method of cutting the old roving R1 described above and then inserting the end of the new roving R2 into the trumpet 69. A roving splicing method of inserting the end of the new roving R2 into the trumpet 69 before cutting R1 and then cutting the old roving R1 can also be performed.

The present invention is not limited to the above embodiment. For example, as a method of adjusting the length of the support arm so as to correspond to the roller gauge of the spinning frame 1, the roller gauge is different as described above. Instead of adjusting the length of the support arm by driving the motor 22 only when working on the machine base, the support member is always
26 may be returned to the origin position, and a method of adjusting the length of the support arm to correspond to the roller gauge of the spinning frame prior to the start of the roving change operation may be adopted. In such a configuration, the control device controls the motor 22 to move the support member 26 by a predetermined amount from the origin position in accordance with the setting conditions of the roller gauge.
Can be driven to simplify the control and the screw shaft
Rotary encoder for detecting the amount of rotation of 19 (not shown)
Inexpensive detectors can be used.

As means for changing the working position of the roving splicing head to a position corresponding to the roller gauge, the rotating shaft 12 is moved in the vertical direction, preferably in the inclined direction of the roller part (usually 45 °). In this case, the arm drive motor 14 and the sector gear 16 are also configured to move integrally with the rotating shaft 12.

In addition, limit sensors may be used instead of proximity switches as sensors S1 and S2 for reading information from the information transmitting unit 8,
A light projector may be provided in place of the dog, and a photoelectric switch may be provided on the roving yarn changer 4 side. As a method for detecting the arrangement state of the dogs and the like of the information transmission unit 8, the same number of sensors and the like as the dogs are provided in the roving yarn changer 4, and the roving yarn changer 4 is moved to a predetermined stop position corresponding to the gear ends GE. Instead of detecting all at once while stopped, the arrangement state of the dogs or the like may be detected sequentially while moving the position where the dogs or the like are arranged. In addition, the spinning conditions of each spinning frame 1 are stored in a central control device, and each spinning frame 1 is provided with an information transmission section for displaying spinning conditions in accordance with a command from the central control device. The unit information may be read by a reading device provided in the roving yarn changer 4. With such a configuration, it is easy to display the spinning speed and the odd / even number of roving replacement rows in addition to the roller gauge setting conditions. If the spinning speed is stored in the control device, it is not necessary to detect the rotation speed of the back roller with the sensor S3 provided in the roving splicing device.

Also, instead of reading the information of the information transmission section at the position where the roving yarn changer 4 has entered the side of the spinning machine frame 1, a reading device is provided in the transport vehicle 5, and the spinning machine frame 1 is provided in the spinning machine frame 1. An information transmission unit is provided at a position corresponding to the reading device when the transport vehicle 5 stops at a position corresponding to the platform 1, and the information of the information transmission unit is read by the transport vehicle 5, and mounted on the transport vehicle 5 and the transport vehicle 5. The exchange of the information with the roving thread changer 4 may be performed by optical communication or the like. In this case, only one information transmission unit is required to be disposed on each spinning frame 1. In addition, an information transmission unit is provided at a position corresponding to the roving yarn changer 4 when the transport vehicle 5 is stopped at a position corresponding to the spinning machine stand 1 to a power supply rail provided above the inter-machine traveling rail 2. And a roving yarn changer 4
A reading device may be provided on the upper part of.

Further, instead of automatically adjusting the length of the support arm based on the information of the information transmission unit, the operator may drive the motor in accordance with the gauge setting conditions of the spinning frame. In the above-described embodiment, the roving splicing head has been described as having one set of two weights. Furthermore, instead of a roving yarn changer that simultaneously changes the inner and outer two rows of roving yarns, a roving yarn that changes roving yarns in one row as in a roving yarn changing machine disclosed in JP-A-62-57957. It may be applied to a spare machine.

[Effects of the Invention] As described in detail above, according to the present invention, the movement of the support arm supporting the roving splicing head can be easily adjusted to a state corresponding to the setting condition of the roller gauge of the spinning frame. ,
It is possible to reliably perform roving and splicing work of spinning machines with different roller gauges, and unlike the past, there is no need to prepare multiple automatic machines (roving yarn changing machines) that match the roller gauges.
In addition to being able to respond smoothly to changes in roller gauges associated with high-mix low-volume production, the operating efficiency of automatic machines (roving yarn changers) is improved.

Further, in the apparatus according to the third aspect, before the roving yarn changer starts the operation on the spinning machine requiring roving yarn change, the supporting arm is operated in accordance with the setting condition of the roller gauge of the spinning machine stand. Since it is automatically adjusted so that it can be moved to the position, complete automation of the roving yarn changing operation becomes possible.

[Brief description of the drawings]

1 is a partially cutaway plan view of the roving splicer, FIG. 2 is a side view of the roving splicer, FIG. 3 is a sectional view taken along line AA of FIG.
The figure is a schematic plan view showing the relationship between the spinning machine and the roving yarn changer, FIG. 5 is a schematic side view of the gear end, FIG. 6 is a schematic rear view showing the relationship between the spinning machine and the roving yarn changer, and FIG. a) to (c) are plan views showing the operation of the roving splicing head, FIGS. 8 (a) to (h) are side views showing the roving splicing operation, and FIGS. 9 (a) and (b) are rollers. It is a side view which shows the roving joint operation of the state in which the gauge was changed. A spinning machine stand 1, a roving yarn changing machine 4 as an automatic machine, an information transmitting unit 8, a roving yarn splicing device 11, a supporting arm main body 13 forming a supporting arm, a supporting member 26, a screw shaft 19 forming a telescopic mechanism, Ball nut 29, motor 22 as driving device, roving splicing head 3
6, draft part 66, trumpet 69, dog D1, D2,
Sensors S1, S2 as reading device, full bobbin F, old roving R
1, new roving R2.

Claims (3)

(57) [Claims] 1. A roving splicing device provided in an automatic machine which moves along a longitudinal direction of a spinning machine stand and performs an operation, wherein a draft part is suspended from a roving wound during spinning while being suspended by a creel of the spinning machine. A roving splicing head for connecting the roving yarn connected to the trumpet and the roving yarn drawn from the preliminary roving winding to be replaced with the roving winding is provided on the support arm, and the roving splicing head is used for traveling of an automatic machine. A drive device that is movably provided between a retracting position that does not hinder and a work position near the upper part of the draft part for performing the roving splicing operation, and that can change a working position of the roving splicing head according to the gauge of the draft part. Roving splicer for the spinning machine provided. 2. A roving yarn splicing device provided in an automatic machine which moves along a longitudinal direction of a spinning machine stand and performs an operation, wherein a draft part is suspended from a roving yarn being spun and suspended by a creel of the spinning machine. A roving splicing head for connecting the roving yarn connected to the trumpet and the roving yarn drawn from the preliminary roving winding to be replaced with the roving winding is provided on the support arm, and the roving splicing head is used for traveling of an automatic machine. The support arm is provided so as to be movable in a plane orthogonal to the moving direction of the automatic machine so as to be moved and arranged at a retracting position that does not hinder and a work position near an upper part of the draft part for performing the roving splicing operation. A roving splicing device for a spinning machine comprising a part of a support arm that can be extended and retracted in order to change a working position of a roving splicing head in accordance with a gauge, and provided with a driving device that drives an extensible mechanism. 3. A roving yarn splicing device installed in an automatic machine which moves along a longitudinal direction of a spinning machine stand and performs an operation, wherein a draft part is suspended from a roving yarn being spun and suspended from a creel of the spinning machine. A roving splicing head for connecting the roving yarn connected to the trumpet and the roving yarn drawn from the preliminary roving winding to be replaced with the roving winding is provided on the support arm, and the roving splicing head is used for traveling of an automatic machine. A drive device that is movably provided between a retracting position that does not hinder and a work position near the upper part of the draft part for performing the roving splicing operation, and that can change a working position of the roving splicing head according to the gauge of the draft part. A spinning machine stand is provided with an information transmitting unit for transmitting information on the gauge setting conditions of the draft part, and an automatic machine is provided with a reading device for reading the information of the information transmitting unit;
A roving yarn splicing device for a spinning machine, comprising: a control device that outputs a drive signal to the drive device so that the support arm can be moved to a work position corresponding to a draft part gauge.