JPH07133514A - Apparatus for controlling winding tension of roving in roving frame - Google Patents

Abstract

PURPOSE:To keep the winding tension of a roving to an almost constant level in a roving frame furnished with a cone drum and a belt-shifter connected to a long rack even by expanding the winding pitch of roving in the case of stopping the operation of the frame for doffing. CONSTITUTION:A lever 35 is rotatably supported via a stud bolt 33 by a belt- shifter 27 supported on a long rack 28 in a state to enable integral and relative motions. The tip end of the lever 35 is connected through a pin 36 in an integrally movable state. A motor 43 is supported on the long rack 28 via a bracket 42 in an integrally movable state. A link 46 is rotatably supported on an eccentric cam 45 fixed to a driving shaft 44 of the motor 43. The link 4 and the lever 35 are connected through a pin 47 in a rotatable manner. The lever 35 is swung by the motor 43 via the link 46 to shift the belt-shifter 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roving winding winding tension adjusting device for a roving spinning machine, and more particularly to a roving winding winding adjusting device for a roving spinning machine which uses a pair of cone drums and moves a belt shifter to adjust the winding tension. The present invention relates to a tension adjusting device.

[0002]

2. Description of the Related Art In a bobbin reed type roving machine, a roving yarn fed from a front roller at a constant speed is produced by a difference in rotational speed between a flyer rotating at a predetermined speed and a bobbin rotating at a higher speed. Wind it on a bobbin while twisting it. The bobbin is supported by the bobbin rail and is moved up and down together with the bobbin rail, and the travel distance of the bobbin rail is shortened each time the direction of the up-and-down movement of the bobbin rail changes.
The roving is wound so that both ends of the roving are wound into a conical shape.

As a device for moving the bobbin rail so that the ascending / descending distance of the bobbin rail is gradually shortened, a molding device 90 shown in FIG.
-242925). The molding device 90 is swingably supported about a shaft 91, and one end of a leversing rod 94 is connected to a leversing bracket 93 biased by a tension spring 92. The vertical movement of the lifting drive system of the bobbin rail 95 is switched by the horizontal movement of the leversing rod 94 accompanying the swing of the leversing bracket 93.

A pinion 96 which is rotated integrally with a gear mechanism (not shown) is attached to the shaft 91, and a bobbin rail 95 is provided.
A cut rack anchor bar 98, one end of which is connected to a double anchor bar 97 that moves up and down together, is arranged so as to mesh with the pinion 96 at the other end. Bolts 100a and 100b fixed to a bracket 99 that is swingably supported on the shaft 91 and that engages with the cut rack anchor bar 98 are mounted on the pigeon catches 101a and 10 by swinging the bracket 99.
1b alternately engages with the reversing bracket 93
The engagement states of the pigeon catches 101a and 101b are switched and the levering bracket 93 is swung. On the other hand, reversing bracket 93
The pinion 96 is rotated by a certain amount every time the up-and-down movement is switched in accordance with the swing of the bobbin so that the distance between one end of the cut rack anchor bar 98 and the shaft 91 is shortened and the up-and-down distance of the bobbin rail 95 is shortened. ing.

On the other hand, if winding is not performed so that the amount of roving delivered and the amount of roving are approximately the same during winding, normal winding will not be performed, and yarn unevenness and coarseness due to fluctuations in tension of the roving will occur. Thread breakage occurs. Therefore, conventionally, a transmission using a pair of cone drums and a belt shifter has been controlled so that the rotation speed of the bobbin gradually decreases as the roving layer wound on the bobbin increases. The belt shifter is moved via a so-called long rack (not shown), and the long rack is rotated in conjunction with the rotation of the pinion 96. The pinion (not shown) is rotated to switch the bobbin rail 95 up and down. It is designed to be moved by a predetermined amount each time.

Further, in recent years, labor saving has progressed in a spinning factory, automation of roving replacement work in the spinning process, connection between each process, automation of transportation, etc. are carried out, and between the roving and spinning process. Proposals for automation have also been made regarding connection and conveyance of roving bobbins. A method has also been proposed in which a roving splicing operation is automatically performed by a roving splicing machine when changing the roving (for example, Japanese Patent Application Laid-Open No. 2-127368). In order to smoothly perform the roving splicing work by the roving splicing machine, it is desirable that the position of the roving yarn end is at a predetermined position.

In addition, the roving yarn is conveyed between the roving and the spinning process in a state where the roving bobbin is suspended from a conveyer which moves along a conveyer path which is generally installed on the ceiling (for example, Japanese Patent Laid-Open No. 61-61). 1
94228). In order to prevent sagging of the roving yarn due to vibration during conveyance of the roving yarn, at the time of winding the roving yarn in the roving machine, it is desirable to stop the winding while the bobbin rail is descending. On the other hand, in order to reliably perform the automatic cutting of the roving thread linked to the roving thread bobbin from the presser paddle of the flyer by lowering the bobbin rail after the winding is stopped, the winding stop in the roving machine is performed while the bobbin rail is being raised. Is preferred.

Therefore, in order to stop the winding at an appropriate position (appropriate position) according to the purpose, a dog is provided at one end of the bobbin rail, and a limit switch is provided at approximately the center of the ascending / descending range of the bobbin rail during the winding operation. Is provided
The winding is stopped when the limit switch is turned on during the movement of the bobbin rail in the predetermined direction after the pipe is full. However, generally, the position of the bobbin rail is not constant when the full pipe signal is output due to an error in the roving winding tension and the like. Therefore, the time to stop the machine differs depending on the position of the bobbin rail when the full pipe signal is output.

For example, in an apparatus for automatically cutting roving after stopping, the limit switch is turned on when the dog engages with the limit switch while the bobbin rail is being raised. Therefore, if the full pipe signal is output while the dog is moving in the direction to turn on the limit switch and is in the vicinity of the limit switch, the limit switch immediately turns on and after the full pipe signal is output. The time to stop the platform is short. However, if the full pipe signal is output immediately after the limit switch is disengaged from the dog while moving in the same direction, the bobbin rail will be almost in motion by the time the limit switch is turned on and the machine base is stopped. Move one extra round trip. Therefore, the maximum length of roving wound on the bobbin is two layers. Since the roving bobbin has a diameter of about 15 cm and the number of windings per inch of the bobbin is 9 to 10 when the pipe is full, the roving length of two layers is about 90 m, which is a considerable amount.

In order to solve the above problems, Japanese Patent Laid-Open No. 4-2
Japanese Patent No. 81022 is provided with an elevating means capable of changing the ascending / descending speed of the bobbin rail independently of the roving winding speed and an appropriate position detecting means of the bobbin rail, and a full pipe signal is output from the full pipe signal output means. After that, there is disclosed a device that increases the bobbin rail ascending / descending speed and outputs a machine stop signal based on the detection signal of the appropriate position detection means.

[0011]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the device disclosed in Japanese Patent Laid-Open No. 2 publication, the bobbin rail elevating speed is increased after the full pipe signal is output, so that the winding pitch of the roving becomes coarse. Therefore, even if the bobbin rail moves approximately one reciprocation after the full pipe signal is output, the length of the roving yarn wound during that time becomes short.

The reason why the winding speed is decreased every time the moving direction of the bobbin rail is changed is to adjust the winding tension according to the winding diameter after the roving winding layer is increased. However, when the coil is roughly wound, the winding length per coil becomes long and the winding tension becomes large. Further, when the roving yarn is further wound on the wound rough winding layer with a coarse winding pitch, the winding tension does not increase so much from the winding tension when winding the underlying rough winding layer. However, in the conventional transmission using a cone drum, every time the moving direction of the bobbin rail is changed, the belt shifter is moved by a predetermined amount together with the long rack to reduce the winding speed. As a result, the winding tension of the roving becomes small at the time of winding the second rough winding layer, and the roving becomes too loose.

Fluctuations in the roving winding tension adversely affect the uniformity of the spun roving thickness. Since the roving wound on the outermost layer of the roving is used in the subsequent step, the spun roving having poor thickness uniformity is a quality defect of yarn thickness unevenness of the product. Also, depending on the spinning conditions, the slack of the roving yarn may cause the roving yarn breakage detection device to operate, and the spinning may become impossible. This phenomenon is especially likely to occur with thick gelene.

The present invention has been made in view of the above problems, and its purpose is to use a cone drum and to move the bobbin rail by a predetermined amount each time the bobbin rail is moved up and down in conjunction with the molding apparatus. Even if the winding pitch of the roving is increased when the roving is wound with the winding device equipped with the belt shifter connected to the long rack and the machine is stopped for doffing, the winding tension will be increased. It is an object of the present invention to provide a roving yarn winding tension adjusting device of a roving machine which can be kept substantially constant.

[0015]

To achieve the above object, in the present invention, the winding tension is adjusted by using a cone drum, and the lifting speed of the bobbin rail can be changed independently of the roving winding speed. In a roving machine equipped with various lifting / lowering means, switching means for switching up / down driving of the bobbin rail lifting / lowering drive system, and movably arranged along the axial direction of the cone drum, and operated in conjunction with the switching means. A long rack, a belt shifter provided integrally movable with the long rack and relatively movable, a moving means provided integrally movable with the long rack, and moving the belt shifter relative to the long rack.
After the coarse winding start signal for stopping the doffing is output, the driving means is drive-controlled to relatively move the belt shifter with respect to the long rack.

Further, in the invention described in claim 2, the moving means is provided with a structure in which the link connected to the belt shifter is driven by a forward and reverse rotation drivable motor arranged so as to be integrally movable with the long rack, A torque motor is used as the motor, and regulating means for regulating the relative movement amount of the belt shifter with respect to the long rack by abutting against the belt shifter are provided on both sides in the movement direction with the belt shifter sandwiched therebetween so that the contact position can be adjusted.

[0017]

In the apparatus of the present invention, the winding speed is changed in response to the increase in the roving winding layer by the speed change mechanism using the cone drum. During normal spinning, the belt shifter is moved integrally with the long rack that is operated in conjunction with the switching means every time the bobbin rail is moved up and down, and the winding speed is sequentially reduced. When the machine is stopped for doffing, the coarse winding start signal is output to increase the ascending / descending speed of the bobbin rail, and the winding pitch of the coarse yarn becomes coarser than that during normal spinning. Even after the rough winding start signal is output, the long rack is moved by a predetermined amount every time the bobbin rail is moved up and down in conjunction with the switching means.

On the other hand, after the rough winding start signal is output, the moving means is operated at the time of the first switching between the vertical movements and the belt shifter is moved by the predetermined amount in the same direction as the moving direction of the long rack with respect to the long rack. When the bobbin rail ascending / descending speed is increased and the length of the roving yarn per coil becomes longer, the tension becomes higher than that at the time of normal winding. However, the belt shifter is moved in the direction in which the roving yarn is loosened by the operation of the moving means, and the winding tension is adjusted to an appropriate tension which is almost the same as that in the normal spinning.

Further, when switching the bobbin rail up and down, the moving means moves the belt shifter relative to the long rack in the direction in which the roving is stretched (the direction in which the winding speed is increased). When the next rough winding layer is wound on the rough winding layer,
When the belt shifter is moved in the direction in which the roving yarn is loosened by the same amount as during normal spinning, the roving yarn becomes too loose. However, since the belt shifter is moved in the direction in which the roving is stretched by the operation of the moving means, the winding tension is adjusted to an appropriate tension that is almost the same as that during normal spinning.

According to the second aspect of the invention, the belt shifter is moved through the link by driving the torque motor during rough winding. The relative movement amount of the belt shifter with respect to the long rack is determined by the contact position with the restriction means provided on both sides of the belt shifter in the moving direction. Since the restricting means can adjust the contact position with the belt shifter, the tension during rough winding can be easily adjusted to an appropriate value by adjusting the contact position according to the spinning conditions.

[0021]

【Example】

(Embodiment 1) A first embodiment embodying the present invention will be described below with reference to FIGS. As shown in FIG. 3, the front roller 1 is rotated via a gear train (none of which is shown) arranged between one end of the rotary shaft 1a and a driving shaft which is rotationally driven by the main motor M. It is designed to be driven. Above the flyer 2 is a driven gear 3
Is integrally rotatably fitted and fixed, and the rotation of the driving shaft is transmitted by the rotation of the driving shaft via a belt transmission mechanism, and is rotationally driven via a drive gear 5 fitted to the rotating shaft 4. .

On the other hand, a driven gear 7a is fixed to the bobbin wheel 7 mounted on the bobbin rail 6. The rotating shaft 9 to which the drive gear 8 that meshes with the driven gear 7a is fitted and fixed has a difference between the rotation of the driving shaft and the rotation by the rotating shaft 11 which is speed-change driven by the speed change mechanism using the cone drums 10a and 10b. The dynamic gear mechanism 12 synthesizes and transmits.

A lifter rack 13 is fixed to the bobbin rail 6. Gear 1 meshing with lifter rack 13
The rotation of the rotary shaft 11 is transmitted to the rotary shaft 15 to which 4 is fitted via a switching mechanism 16 as a switching means and a differential gear mechanism 17. The switching mechanism 16 includes a pair of bevel gears 18,
The rotary shaft 20 has a fixed shaft 19 that is integrally rotatable, and a bevel gear 21 that can alternately mesh with the bevel gears 18 and 19. The rotation of the rotating shaft 11 is transmitted to the bevel gear 21, and the rotation of the rotating shaft 20 is input to the differential gear mechanism 17. Then, a levering rod 23 connected to a levering bracket (not shown) of a known molding device 22.
By the reciprocal movement of the bevel gears 18, the engagement between the bevel gears 18 and 19 and the bevel gear 21 can be switched. By switching the engagement of the bevel gears 18 and 19 with the bevel gear 21, the rotation direction of the rotary shaft 20 is changed, and the lifting movement direction of the lifter rack 13, that is, the bobbin rail 6 is changed. The engaging piece 2 is attached to the reversing rod 23.
4 is fixed, and a limit switch LS1 that engages with the engaging piece 24 and is turned on when the leversing rod 23 is arranged on the descending movement side of the bobbin rail 6 is arranged at a position corresponding to the engaging piece 24. It is set up.

In the differential gear mechanism 17, the rotation of the rotary shaft 20 is combined with the rotation of the motor 25 that is speed-changed via an inverter (not shown).
The rotation speed of the output portion of the differential gear mechanism 17 is increased when the rotation direction of the motor 25 is the same as the rotation direction of the rotation shaft 20, and is reduced when the rotation direction is the opposite direction. The differential gear mechanism 17 and the motor 25 constitute an elevating means capable of changing the elevating speed of the bobbin rail 6 independently of the roving winding speed.

As shown in FIG. 4, the cone drum 10a,
The drive device for the belt shifter 27 that moves the belt 26 wound between 10b is provided with a long rack 28 similar to a known device. The long rack 28 is slidably accommodated along the guide member 29 in a groove 29a of a guide member 29 extending parallel to the axis of the cone drums 10a and 10b. As is well known, the long rack 28 meshes with a pinion 32 that is integrally rotatably fixed to an upright shaft 31 that rotates when the weight 30 descends. The lower end of the upright shaft 31 is fixed with a gear (not shown) that meshes with a gear fixed to the shaft of a ratchet wheel that rotates by a predetermined amount when the bobbin rail 6 is switched up and down by the molding device 22.
Therefore, each time the roving layer wound on the bobbin B is increased, that is, when the bobbin rail 6 is moved up and down, the pinion 32 is rotated by a certain amount, and the long rack 28 is moved leftward in FIG. 4 at a certain pitch. It has become.

The belt shifter 27 is movably supported along the longitudinal direction of the long rack 28 in a state orthogonal to the long rack 28. As shown in FIG. 2A, the belt shifter 27 is provided with a recess 27a that engages with a guide protrusion 28a formed on the surface side of the long rack 28. Belt shifter 27 long rack 28
On the other side, a long rack 28 and a belt shifter 27
Stud bolt 33 and nut 3 that penetrate the
A lever 35 is rotatably supported via 3a and a bearing 34. The lever 35 is connected to the belt shifter 27 on its upper side via a pin 36 and a bush 36a. The bush 36a is slidably attached to a long hole 27b formed in the belt shifter 27. On the belt shifter 27, two regulating members 37 that play a role of holding the relative position of the lever 35 constant are fixed from the back side so that the tips thereof slightly project from the front surface of the belt shifter 27. At the time of movement, the relative positions of the belt shifter 27 and the lever 35 are not displaced.

As shown in FIGS. 1 and 4, the long rack 28 has the belt shifter 27 sandwiched between the clips 3 on both sides.
8, 39 are supported so that they can move integrally with the long rack 28. As shown in FIG. 2B, the clip 39 includes a pair of upper and lower engaging portions 39 a that can engage with the back surface of the guide member 29.
And an engaging portion 39b that engages with the surface of the long rack 28. Then, the stud bolt 40 and the nut 41 penetrating the long rack 28 are used for the long rack 2
It is fastened and fixed to 8, and is movable along the guide member 29 together with the long rack 28. Clip 38
Is fixed as well.

As shown in FIGS. 1 and 2, the clip 3
A bracket 42 is fixed to the lower surface of 8 by bolts (not shown), and a motor 43 for driving a belt shifter is fixed to the bracket 42. A torque motor capable of rotating in the forward and reverse directions is used as the motor 43, and its drive shaft 44 is fixed so as to extend horizontally in a state orthogonal to the longitudinal direction of the long rack 28. A disk-shaped eccentric cam 45 is integrally rotatably fixed to the drive shaft 44. Eccentric cam 4
A link 46 is rotatably fitted to and supported by 5 in a fitting hole 46a formed at the base end. The tip of the link 46 is connected to the lever 35 via a pin 47. The eccentric cam 45, the link 46, and the lever 35 constitute a four-joint link in which the stud bolt 33 and the drive shaft 44 serve as a fixed joint. The rotation of the eccentric cam 45 causes the link 4
The lever 35 is pivoted about the stud bolt 33 via 6.

When the motor 43 is driven in the normal direction, the eccentric cam 45 is rotated counterclockwise in FIG. 1, and the belt shifter 27 is moved in the direction in which the winding speed decreases. Also, the motor 43
At the time of the reverse drive of, the eccentric cam 45 is rotated clockwise, and the belt shifter 27 is moved in the direction in which the winding speed increases. The belt 35 is attached to the long rack 28 by the lever 35, the motor 43, the eccentric cam 45, and the link 46.
The moving means is configured to move relative to.

Below the link 46 are two dogs 48,
49 is projected. Below the link 46, two limit switches LS2 and LS3 are fixed to positions which engage with the dogs 48 and 49 and turn on when the lever 35 is arranged in a state of extending in the vertical direction (reference position). Has been done. Adjusting bolts 50 and 51 are attached to the side surfaces of the clips 38 and 39 facing each other as a restricting means that comes into contact with the side surfaces of the belt shifter 27 and restricts the movement thereof.

As shown in FIG. 3, a rotation detector 53 that outputs a pulse signal corresponding to the amount of rotation of the gear 52 is arranged near the gear 52 that rotates integrally with the front roller 1. The rotation detector 53 is connected to a counter 54. The counter 54 counts the pulse signal of the rotation detector 53 from the start of winding and outputs a full pipe signal when the count value reaches a predetermined value corresponding to full pipe. To do. Further, the dog 55 is fixed to the bobbin rail 6, and the limit switch LS4 is placed at a predetermined position which can be engaged with the dog 55 when the bobbin rail 6 is arranged substantially in the center of the ascending / descending range of the bobbin rail 6 during the winding operation. Is provided.

A control device 56 as a control means drives and controls the main motor M, the motor 25 and the motor 43. An output signal from the counter 54 and an output signal from the limit switches LS1 to LS4 are input to the control device 56, and the motor 25 and the motor 43 are controlled based on those signals.

Next, the operation of the device configured as described above will be described. In the apparatus of this embodiment, after the winding is stopped due to the full pipe, the bobbin rail 6 is further lowered from the winding operation position, and the roving thread connected to the roving thread wound on the bobbin B from the presser 2a of the flyer 2 is automatically moved. Since it is cut into pieces, the winding is stopped while the bobbin rail 6 is being raised. That is, the control device 56 stops the operation of the machine base when the limit switch LS1 outputs the ON signal from the limit switch LS4 after the full pipe stop signal is output.

When the operation of the machine base is started, the bobbin rail 6 moves up and down within a range around the limit switch LS4, and the roving R spun from the front roller 1 is wound on the bobbin. Forming device 2 as bobbin rail 6 moves up and down
The reversing rod 23 connected to the reversing bracket 2 (not shown) is reciprocated to move the bevel gear 18,
The engagement between 19 and the bevel gear 21 is switched. When the reversing rod 23 is arranged on the ascending movement side of the bobbin rail 6, the engaging piece 24 moves the limit switch LS.
The limit switch LS1 outputs an OFF signal to the control device 56. When the reversing rod 23 is arranged on the lower moving side of the bobbin rail 6, the engagement piece 24 is held in a state of being engaged with the limit switch LS1.

When the bobbin rail 6 is switched up and down by the molding device 22, the pinion 32 is rotated by a predetermined amount, and the long rack 28 is moved leftward in FIGS. 1 and 4 at a constant pitch. Since the belt shifter 27 is fastened and fixed to the long rack 28 by the stud bolts 33 and the nuts 33a, the belt 26, which is moved along with the movement of the long rack 28 and wound around the cone drums 10a and 10b, serves as the bottom cone drum 10b. It is moved to the side that slows down the rotation speed. Then, the winding speed and the ascending / descending speed of the bobbin rail 6 gradually decrease as the roving layer increases. Also, clip 3
8 and 39 also move integrally with the long rack 28, and during normal spinning, the lever 35 moves to the belt shifter 2 as shown in FIG.
It is held in a reference position extending along 7.

The counter 54 counts the output pulse signal of the rotation detector 53 from the start of operation of the machine base. A count value corresponding to a predetermined spinning length when the pipe is full is set in the counter 54, and a full pipe signal is output when the count value reaches the set value.

When the full signal is output from the counter 54, the controller 56 drives the motor 25 so as to increase the ascending / descending speed of the bobbin rail 6. In order to increase the speed, it is necessary to match the rotation direction of the motor 25 with the rotation direction of the rotary shaft 20. The rotation direction of the rotary shaft 20 is determined depending on whether the bobbin rail 6 is moving up or down. Limit switch LS
If 1 is off, the bobbin rail 6 is rising, and if 1 is on, the bobbin rail 6 is descending. Controller 56
Drives the motor 25 so that the rotation direction of the motor 25 coincides with the rotation direction of the rotary shaft 20 in accordance with ON / OFF of the output signal from the limit switch LS1. By driving the motor 25, the ascending / descending speed of the bobbin rail 6 becomes faster than the ascending / descending speed during normal spinning, and coarse winding in which the winding pitch of the coarse yarn on the bobbin B is increased is started.

The control device 56 drives the motor 25 and simultaneously drives the belt shifter driving motor 43 in the normal direction. The eccentric cam 45 is rotated counterclockwise in FIG.
The lever 35 is rotated counterclockwise around the stud bolt 33 via the. The belt shifter 27 is moved via the pin 36 and the bush 36a to the left in FIG. 1, that is, in the direction of decreasing the winding speed. Then, the belt 26 is moved leftward in FIG. 1 together with the belt shifter 27, and the movement of the belt shifter 27 is regulated and held at a predetermined position while the belt shifter 27 is in contact with the adjusting bolt 50.

The hoisting speed of the bobbin rail 6 is increased to 1
As the length of the roving yarn per coil becomes longer, the tension becomes higher than that during normal winding. However, since the belt shifter 27 is moved in the direction in which the roving is loosened by the driving of the motor 43 at the same time as the start of the rough winding, the winding tension is adjusted to the same proper tension as in the normal spinning.

Bobbin rail 6 when a full pipe signal is output
The control until the bobbin rail 6 is stopped differs depending on the position and the moving direction. For example, as shown in FIG. 5A, when the full pipe signal is output while the bobbin rail 6 is rising and before the limit switch LS4 has passed, the limit switch LS1 is in the off state. Therefore, the bobbin rail 6 reaches a predetermined proper position and the limit switch L
When the ON signal is output from S4, the control device 56 immediately outputs a stop signal to the motor 25 and the main motor M, and drives the motor 43 in the reverse direction. The motor 43 is stopped when the lever 35 is placed in the reference position, and the belt shifter 27 is placed in the original position.

The motor 25 is immediately stopped by the stop command, but the main motor M continues inertial operation, so that the roving is wound on the bobbin B even after the stop command. Bobbin rail 6 at this time
Since the ascending speed of is a stopping speed during normal spinning, the roving is not roughly wound and is wound at the pitch during normal spinning. or,
Since the belt shifter 27 is arranged at the reference position, the roving yarn is wound in an appropriate winding tension state.

On the other hand, as shown in FIG. 5 (b), when the full pipe signal is moving up the bobbin rail 6, the limit switch L
When the bobbin rail 6 is output after passing through S4, the bobbin rail 6 reverses at the rising end, descends, reverses at the descending end, then ascends again, and is stopped at an appropriate position on the way. In this case, when the full pipe signal is output, the motor 25 is driven in the same manner as described above to increase the ascending / descending speed of the bobbin rail 6 to start rough winding, and at the same time, the motor 43 is normally driven to rotate the belt shifter. 27 is moved in a direction to loosen the roving.

When reaching the reverse position of the ascending end in this state, the moving direction of the bobbin rail 6 is changed by the action of the forming device 22 and the long rack 28 loosens the roving yarn to the left of the predetermined pitch in FIG. Is moved in the direction. Further, the lever shing rod 23 is moved so that the limit switch LS1 engages with the engagement piece 24, and the limit switch LS1 outputs the ON signal. The control device 56 receives the signal from the motor 25,
43 is driven in reverse. As a result, the bobbin rail 6 is lowered in a state in which the speed is higher than in the normal spinning. Further, the eccentric cam 45 is rotated clockwise in FIG. 1, the lever 35 is rotated in the opposite direction to move the belt shifter 27 rightward in FIG. 1, and the belt 26 is in contact with the adjusting bolt 51. The movement is restricted by and is held at the position.

When the following coarse winding layer is wound on the coarse winding layer, if the belt shifter is moved in the direction in which the coarse yarn is loosened by the same amount as in the normal spinning, the coarse yarn becomes too loose. However, since the belt shifter 27 is moved in the direction in which the roving is stretched by the reverse rotation of the motor 43, the take-up tension is adjusted to an appropriate tension that is almost the same as during normal spinning.

When the dog 55 reaches the position corresponding to the limit switch LS4 while the bobbin rail 6 is descending, an ON signal is output from the limit switch LS4. At this time, the limit switch LS1 is in the ON state, so the control device 56 Does not output the stop command. When the ON signal of the limit switch LS4 is input, the control device drives the motor in the normal direction to return the lever 11 to the reference position. This is because the rough winding layer is not yet wound on the side that moves downward from the position corresponding to the limit switch LS4.

When the bobbin rail 6 reaches the lower end, the moving direction of the bobbin rail 6 is changed by the action of the forming device 22 and the long rack 28 loosens the roving yarn to the left of the predetermined pitch in FIG. Is moved in the direction. Further, the leversing rod 23 is moved so that the limit switch LS1 cannot engage with the engaging piece 24,
The OFF signal is output from the limit switch LS1. The control device 56 determines the motor 43 based on the signal.
Is driven in the reverse direction to move the belt shifter 27 again in the direction in which the roving is stretched. Further, the motor 25 is driven in the normal direction.

Then, the bobbin rail 6 starts rising again while roughly winding. When the bobbin rail 6 reaches a predetermined proper position and an ON signal is output from the limit switch LS4, the controller 56 controls the main motor M and the motors 25 and 43 in the same manner as described above to stop the machine. Be seen.

Further, as shown in FIG. 6, when the full pipe signal is output while the bobbin rail 6 is descending, the bobbin rail 6
Regardless of the position, the bobbin rail 6 is reversed at the descending end, and then the machine base is stopped during the ascending. When the full pipe signal is output during the descent, the control device 56 drives the motor 25 in the reverse direction and drives the motor 43 in the normal direction. By driving the motor 43 in the normal direction, the belt shifter 27 is moved in the direction in which the roving is loosened in the same manner as described above. Then, in the same manner as described above, the rough winding is performed with an appropriate tension.

When the bobbin rail 6 reaches the lower end, the moving direction of the bobbin rail 6 is changed by the action of the forming device 22 and the long rack 28 is moved to a predetermined pitch.
To the left, that is, in the direction of loosening the roving. or,
The reversing rod 23 is moved so that the limit switch LS1 cannot engage with the engagement piece 24, and the limit switch LS1 outputs an OFF signal.
Based on the signal, the controller 56 drives the motor 43 in the reverse direction to move the belt shifter 27 in the direction in which the roving is stretched. Further, the motor 25 is driven in the normal direction. Then, the bobbin rail 6 starts rising again while roughly winding. When the bobbin rail 6 reaches a predetermined proper position and an ON signal is output from the limit switch LS4, the controller 56 controls the main motor M and the motors 25 and 43 in the same manner as described above to stop the machine. Be seen.

When stopping the bobbin rail 6 in the proper position, the control circuit of the control device 56 outputs the ON signal from the limit switch LS4 while the bobbin rail 6 is descending, that is, the limit switch LS1 is in the ON state. It will be changed to stop the machine when it stops. Then, in the same manner as described above, when the first layer of the rough winding layer is wound, the motor 43 is driven to rotate in the normal direction and the belt shifter 27 is moved in a direction to reduce the winding speed, and the already wound rough winding layer is wound. When the next rough winding layer is wound on the layer, the motor 43 is reversely driven and the belt shifter 27 is moved in a direction to increase the winding speed.

As described above, when the rough winding is performed after the full pipe signal is output, the motor 43 is driven and the belt shifter 27 is relatively moved with respect to the long rack 28 to adjust the coarse yarn winding tension. Therefore, even when the roving is carried out, the unevenness of the thickness of the spun roving is prevented, and the slack is excessively slackened so that the roving breakage detection sensor (not shown) equipped in the roving machine malfunctions to make the spinning impossible. It will never happen.

Further, the lever 35, the motor 43, the eccentric cam 4
It can be applied to an existing roving frame with a simple modification by providing 5 and a link 46. (Second Embodiment) Next, a second embodiment will be described with reference to FIGS.

This embodiment is different from the above embodiment in that a means for switching the bobbin rail 6 up and down after the full signal is output is provided earlier than the normal position. That is, the pair of pigeon catches that engage with the reversing bracket of the molding device 22 to regulate the posture of the reversing bracket are engaged with the cut rack anchor bar and are driven independently of the movement of the pivoted bracket. Is provided.

As shown in FIG. 7, the molding device 22 has a reversing bracket 58 swingably supported around a shaft 57 and a tension spring 59, as in the known device.
Is urged by. The reversing bracket 58 is connected to the second end of the reversing rod 23 (not shown in FIG. 7) whose first end is connected to the switching mechanism 16.

A pinion 60 which is rotated integrally with a gear mechanism (not shown) is attached to the shaft 57, and a cut rack anchor bar 62 whose one end is connected to a double anchor bar 61 which moves up and down together with the bobbin rail 6 is provided at the other end. It is arranged so as to mesh with the pinion 60. The bracket 6 is swingably supported on the shaft 57 and engages with the cut rack anchor bar 62.
The bolts 64a and 64b fixed to the bracket 3 are attached to the bracket 6
It is equipped so as to be alternately engageable with the pigeon catches 65a and 65b by the swinging of No. 3. The engaging state between the leversing bracket 58 and the pigeon catches 65a and 65b is switched to swing the leversing bracket 58. On the other hand, the pinion 6 is changed every time the up-and-down movement is switched due to the swing of the leversing bracket 58.
When 0 is rotated by a certain amount, the distance between one end of the cut rack anchor bar 62 and the shaft 57 is shortened, and the lifting distance of the bobbin rail 6 is also shortened.

Support brackets 6 are provided on both sides of the molding device 22.
7a and 67b are fixed symmetrically, and the support bracket 67
The levers 68a and 68b are attached to the shafts 69a and 6a, 67b.
It is rotatably supported via 9b. Motors 70a and 70b are fixed to the support brackets 67a and 67b, and disc-shaped eccentric cams 72a and 72b are fixed to their drive shafts 71a and 71b so as to be integrally rotatable. Links 73a, 73b are rotatably fitted and supported on the eccentric cams 72a, 72b through fitting holes 74a, 74b formed at their base ends. The tips of the links 73a and 73b are connected to the first ends of the levers 68a and 68b via a pin 75. Rollers 76a and 76b are rotatably mounted on the second ends of the levers 68a and 68b. Lever 6
The rollers 8a and 68b are formed in such a length that the rollers 76a and 76b can engage with the pigeon catches 65a and 65b.

Both levers 68a, 68b are always arranged in a standby position where they cannot engage with the pigeon catches 65a, 65b. When the eccentric cams 72a and 72b make one rotation by driving the motors 70a and 70b, the link 73
Both levers 68a, 68b are engaged with the bracket 63 via the a, 73b.
It is swung between a working position where b is pushed down to a position where the engagement is released and a standby position. The lever 68a releases the engagement between the lever catch bracket 58 and the pigeon catch 65a that holds the lever catch bracket 58 in the direction in which the bobbin rail 6 is moved downward. Further, the lever 68b serves to hold the leversing bracket 58 in a direction to move the bobbin rail 6 upward.
The engagement between 5b and the levering bracket 58 is released. Engagement protrusions are formed on the links 73a and 73b,
Below the links 73a and 73b are links 73a and 73b.
Limit switches LS5, LS6 are provided which are turned on by engaging with the engaging protrusions when the switch is placed in the standby position. The motors 70a and 70b are driven by drive signals to rotate the eccentric cams 72a and 72b once, and then stop by the ON signals of the limit switches LS5 and LS6.

A support plate 77 is fixed to the lower portion of the bracket 63, and a dog 78 is fixed to the lower surface of the support plate 77. Below the support plate 77, a limit switch LS7 that engages with the dog 78 and outputs a signal for determining the drive start timing of the motors 70a and 70b is arranged. Generally, in the forming device 22 (particularly the box-rotric type forming device), the reversing force becomes weak in the vicinity of the center of the ascending / descending range of the bobbin rail 6, and the accuracy of the reversing timing and the reliability of the reversing operation deteriorate. The dog 78 is engaged with the limit switch LS7 while the bobbin rail 6 is present near the center of the dog 78.
That is, when the ON signal is output from the limit switch LS7, the bobbin rail 6 moves in the inversion prohibited area A.
Will be in F.

Further, below the support plate 77, limit switches LS8 and LS9 are fixed at predetermined positions via brackets (not shown). The limit switch LS8 is arranged at a position where the limit switch LS8 engages with the engaging portion 77a of the support plate 77 and turns on when the bobbin rail 6 exists at a position corresponding to the lower side outside the inversion prohibition region.
The limit switch LS9 is arranged at a position where the limit switch LS9 engages with the engaging portion 77b of the support plate 77 and turns on when the bobbin rail 6 exists at a position corresponding to the upper side outside the inversion prohibition area AF. The limit switch LS4 for stopping the appropriate position is arranged at a position where the limit switch LS4 is engaged with the dog 55 and outputs an ON signal when the bobbin rail 6 exists in the inversion prohibition area AF.

Next, the operation of the apparatus configured as described above will be described. First, a case where the machine base is stopped while the bobbin rail 6 is being raised will be described. If the full pipe signal is being output while the bobbin rail 6 is rising and before the limit switch LS4 has passed, the position of the bobbin rail 6 is outside the inversion prohibition area AF as shown in FIG. Figure 8
As shown in (b), regardless of whether it exists in the inversion prohibited area AF, a control signal is output from the control device 56 as in the case corresponding to FIG. Then, the motors 25 and 43 are controlled in the same manner as described above, and the coarse winding and winding tensions are adjusted in the same manner. That is, in this case, the levers 68a and 68b for switching the bobbin rail 6 up and down faster than the normal position are not actuated.

Next, a case where the full pipe signal is output while the bobbin rail 6 is rising and after the limit switch LS4 has passed is described. As shown in FIG. 8C, if the position of the bobbin rail 6 is within the reversal prohibition area AF, the bobbin rail 6 is raised after the full pipe signal is output as in the case of FIG. 5B of the above-described embodiment. After reversing from to descending, descending, and reversing from descending to ascending, ascending is performed again and stopped at an appropriate position on the way of ascending. And, the point that the reversal timing is earlier than usual is different from the case of the above embodiment. The drive control of the motors 25 and 43 at the time of reversing or after reversing is the same as that in the above embodiment.
Therefore, only the reversing action of the bobbin rail 6 will be described. The rough winding is started based on the output of the full pipe signal, and the limit switch LS7 is held in the ON state while the bobbin rail 6 is moving up in the inversion prohibited area AF. When the bobbin rail 6 moves out of the inversion prohibited area AF, the limit switch LS
7 turns off. The control device 56 immediately starts the reversing operation of the bobbin rail 6 based on the OFF signal of the limit switch LS7. Since the bobbin rail 6 is rising, the limit switch LS1 is off. Therefore, the controller 56 drives the motor 70b for downward reversal in order to reverse the bobbin rail 6 from upward to downward.

At this time, the pigeon catch 65b is engaged with the leversing bracket 58 to hold the leversing bracket 58 in a state of moving the bobbin rail 6 upward. Eccentric cam 72b driven by motor 70b
Is rotated, and the lever 68b is swung via the link 73b. Then, during the swing, the roller 76b engages with the pigeon catch 65b to push down the pigeon catch 65b, and the engagement between the pigeon catch 65b and the levering bracket 58 is released. Then, the reversing bracket 58 tilts toward the side for moving the bobbin rail 6 downward, the pigeon catch 65a is engaged with the reversing bracket 58, and the bobbin rail 6 starts the downward movement. The motor 70b stops based on the ON signal of the limit switch LS6 when the eccentric cam 72b makes one rotation.

When the bobbin rail 6 starts descending, the bobbin rail 6 immediately enters the inversion prohibited area AF, and the limit switch LS7 is turned on. When the bobbin rail 6 continues to descend and comes out of the inversion prohibition area AF, the limit switch LS7 is turned off. Since the limit switch LS1 is in the ON state, the control device 56 drives the upward reversing motor 70a in order to reverse the bobbin rail 6 from descending to ascending. The eccentric cam 72a is rotated by driving the motor 70a, and the lever 68a is swung via the link 73a. Then, during the swing, the roller 76
a engages with the pigeon catch 65a and pushes down the pigeon catch 65a, and the engagement between the pigeon catch 65a and the leversing bracket 58 is released. And
The reversing bracket 58 tilts to the side for moving the bobbin rail 6 upward, and the pigeon catch 65b is engaged with the reversing bracket 58 to start the upward movement of the bobbin rail 6. The motor 70a stops based on the ON signal of the limit switch LS5 when the eccentric cam 72a makes one rotation. After that, when the bobbin rail 6 moves to the position where the limit switch LS4 is turned on, the machine stand is stopped in the same manner as described above by the command of the control device 56.

Next, the reversal control of the bobbin rail 6 when the full pipe signal is output while the bobbin rail 6 is descending, that is, when the limit switch LS1 is output in the ON state will be described. As shown in FIG. 9A, when the bobbin rail 6 exists in the inversion prohibition area AF when the full pipe signal is output, the bobbin rail 6 continues to descend because the limit switch LS7 is in the ON state. When the bobbin rail 6 continues descending and comes out of the inversion prohibited area AF, the limit switch LS
7 is turned off, and the limit switch LS8 is turned on. Since the limit switch LS1 is in the ON state, the control device 56 drives the upward reversing motor 70a in order to reverse the bobbin rail 6 from descending to ascending. Then, similarly to the above, the engagement state between the pigeon catches 65a and 65b and the levering bracket 58 is switched, and the moving direction of the bobbin rail 6 is changed to the upward side. Then, when the limit switch LS4 is turned on during the ascent, the machine stand is stopped in the same manner as described above.

As shown in FIG. 9B, when the bobbin rail 6 is below the reversal prohibition area AF (the winding position of the roving is above the bobbin) when the full pipe signal is output, the limit switch LS7 is used. Limit switch LS8 when is off
Is on, the control device 56 immediately drives the upward reversing motor 70a. Then, similarly to the above, the engagement state between the pigeon catches 65a and 65b and the levering bracket 58 is switched, and the moving direction of the bobbin rail 6 is changed to the upward side. Then, when the limit switch LS4 is turned on during the ascent, the machine stand is stopped in the same manner as described above.

As shown in FIG. 9C, when the bobbin rail 6 is above the inversion prohibition area AF when the full pipe signal is output, the limit switch LS7 is in the off state.
However, since the limit switch LS9 is in the ON state, the control device 56 does not perform the inversion control, and the bobbin rail 6 continues to descend. Then, the bobbin rail 6 is in the inversion prohibited area A.
When the limit switch LS7 is turned off again after passing through F and the limit switch LS8 is turned on, the control device 56 immediately drives the motor 70a for upward reversal. As a result, the moving direction of the bobbin rail 6 is changed to the ascending side. Then, while rising, the limit switch LS
When No. 4 is turned on, the machine base is stopped as described above.

Next, the reverse control of the bobbin rail 6 when the bobbin rail 6 is stopped while the machine base is stopped when the bobbin rail 6 reaches the proper position while the limit switch LS1 is in the ON state will be described. In this case, the control circuit of the control device 56 is changed to stop the machine when the bobbin rail 6 is descending, that is, when the limit switch LS1 is in the ON state and the ON signal is output from the limit switch LS4. The reversal command is issued when the limit switch LS7 is off and the limit switch LS9 is on.

First, the case where the full pipe signal is output while the bobbin rail 6 is rising, that is, when the limit switch LS1 is off is described. As shown in FIG. 10A, when the bobbin rail 6 is located outside the inversion prohibition area AF at the time of outputting the full pipe signal, the limit switch LS9 is in the off state at the time of outputting the full pipe signal, so that the bobbin is in the bobbin state. Rail 6 continues to rise. When the bobbin rail 6 passes through the inversion prohibited area AF, the limit switch L
Immediately after S9 is turned on, the bobbin rail 6 is reversed, and while the bobbin rail 6 is descending, the machine is stopped based on the ON signal of the limit switch LS4.

As shown in FIG. 10B, even when the bobbin rail 6 is in the inversion prohibition area AF, as in the case of FIG. 10A, the ascent continues even after the full pipe signal is output. Immediately after passing through the inversion prohibition area AF, the bobbin rail 6 is inverted, and while the bobbin rail 6 is descending, the machine is stopped based on the ON signal of the limit switch LS4.

As shown in FIG. 10C, when the bobbin rail 6 is located above the inversion prohibition area AF when the full pipe signal is output, the limit switch LS9 is in the ON state when the full pipe signal is output. Therefore, the bobbin rail 6 is immediately inverted. Then, while the bobbin rail 6 is descending, the machine base is stopped based on the ON signal of the limit switch LS4.

Next, the case where the full pipe signal is output while the bobbin rail 6 is descending, that is, when the limit switch LS1 is turned on will be described. If the bobbin rail 6 has passed the limit switch LS4 when the full pipe signal is output, the position of the bobbin rail 6 is restricted outside the reversal prohibition area AF and inside the reversal prohibition area AF as shown in FIG. The inversion control of the bobbin rail 6 is not performed. Then, the bobbin rail 6 continues to move downward, and the machine stand is stopped when the limit switch LS4 is turned on.

Further, the bobbin rail 6 has a limit switch L.
When the full pipe signal is output after passing through the position corresponding to S4, after the full pipe signal is output, the bobbin rail 6 reverses from descending to ascending, ascending, reversing from ascending to descending, and then descends again. , It is stopped at an appropriate position on the way down. Figure 11
As shown in (b), when the full pipe signal is output in the inversion prohibition area AF, the inversion operation is performed immediately after passing through the inversion prohibition area AF, and the bobbin rail 6 rises. Then, when it passes the lower end of the inversion prohibition area AF, the inversion operation is immediately performed again, and the descent operation is performed again to stop at the proper position.
In addition, as shown in FIG. 11C, when the bobbin rail 6 outputs a full pipe signal below the inversion prohibition area AF,
Immediately after the output of the full pipe signal, the reversing operation is performed.
The same operation as in the case of 1 (b) is performed.

After the full pipe signal is output, when the bobbin rail 6 is raised and lowered to roughly wind the roving, an overrun occurs when the bobbin rail 6 is reversed, and the roving was wound up last time. There is a case where so-called shoulder disengagement occurs in which the film is wound in a state of being separated from the roving layer. However, in this embodiment, the bobbin rail 6
Since is reversed at a position earlier than the normal reversal position, it is possible to reliably prevent the occurrence of shoulder dislocation. Further, the moving distance of the bobbin rail 6 after the full pipe signal is output is shortened, and the length of the roving thread wound after the full pipe signal is output is shortened.

Further, inversion is prohibited not to simply invert at a position earlier than the normal inversion position, but to prevent inversion near the center of the ascending / descending range of the bobbin rail 6 which lacks certainty in switching up / down by the molding device. Since the area AF is provided, the reversal is surely performed, and the failure of the up / down switching is prevented.

The present invention is not limited to the above-described embodiments, but a structure other than the link mechanism may be adopted as the structure for moving the belt shifter 27 relative to the long rack 28. For example, as shown in FIG. 12, a ball screw 81 is rotatably supported via a bracket 79 and a bearing 80 between both clips 38 and 39, and a ball nut 82 is fixed to the belt shifter 27. The ball screw 81 may be driven by the motor 84 via the gear train 83. In this case, by using a stepping motor for the motor 84, the adjustment bolt 5
No need for 0,51.

Also, as shown in FIG. 13, both clips 3
Alternatively, the air cylinders 85 and 86 may be supported on the shafts 8 and 39 via the bracket 79, and the piston rods 85a and 86a of the air cylinders 85 and 86 may be connected to the belt shifter 27. By moving the belt shifter 27 from both sides by the two air cylinders 85 and 86, the twisting of the belt shifter 27 is prevented as compared with the case of one air cylinder.

Further, as the limit switch LS4, a switch which is turned on only when the bobbin rail 6 moves in a predetermined moving direction and is engaged with the dog may be used. For example, when stopping the bobbin rail 6 at an appropriate position while moving up, use the one that is turned on only when the bobbin rail 6 is engaged with the dog while the bobbin rail 6 is moving up. When the position is stopped, the one that is turned on only when it is engaged with the dog while the bobbin rail 6 is descending is used.

Further, in the first embodiment, a detection sensor for detecting that the bobbin rail 6 is located between the reverse position and a predetermined position before the reverse position is provided, and the bobbin rail is detected based on the detection signal of the detection sensor. If it is in that region, winding at a normal pitch may be performed without performing rough winding. In this case, shoulder disengagement when the bobbin rail 6 is reversed is prevented. As the detection sensor, for example, the same limit switches as the limit switches LS8 and LS9 of the second embodiment may be used, or the dog attached to the bobbin rail 6 may be detected.

Further, since the winding tension is surely adjusted depending on whether the layer below the rough winding layer is wound or the normal pitch roving winding layer or the coarse winding layer, it is reversed after the full pipe signal is output. A device for determining the distance to the position may be provided. Then, after the reversal is started, tension is adjusted so as to be an appropriate tension when the second layer is roughly wound while moving that distance, and after moving the distance, the normal pitch is kept until the next reversal. The tension is adjusted so that the tension is appropriate when the rough winding is performed on the roving winding layer. As a means for obtaining the distance from the output of the full pipe signal to the inversion position, for example, a rotary encoder is provided to generate a pulse corresponding to the rotation of the rotary shaft 5, a counter for counting the output pulse, and an ultrasonic distance. There are sensors, etc.

Further, in the second embodiment, the dog 78 and the limit switch LS7 are omitted, and the inversion prohibition area A is formed by the support plate 77 and the limit switches LS8 and LS9.
You may make it set F. In this case, it is assumed that the bobbin rail 6 exists in the inversion prohibition area AF when both the limit switches LS8 and LS9 are in the off state. Further, in the second embodiment, when the machine base is stopped when the bobbin rail 6 is descending, rough winding is not performed when the bobbin rail 6 is moved from the upper end of the inversion prohibition region to an appropriate position, and it is wound at a normal pitch. May be performed.

The configuration of the second embodiment in which the bobbin rail 6 is reversed earlier than the normal position is not limited to the case where the rough winding is performed after the full pipe signal is output, and is applied to, for example, a stopping method in which the rough winding is not performed. May be. In this case, the amount of roving yarn wound up after the full pipe signal is output and before the stop is reduced. In addition, JP-A-1
It may be applied to the case where rough winding is started by a constant length winding start signal, as in the apparatus and method disclosed in Japanese Patent No. 250423.

Further, the control device 56 is not limited to one using a relay, and a control device using a microcomputer may be used to calculate the area by logical operation.

[0083]

As described above in detail, according to the present invention, a roving frame is provided which uses a cone drum and is equipped with a belt shifter which is moved by a long rack which is moved by a predetermined amount each time the bobbin rail is switched up and down. In the above, the winding tension can be kept substantially constant even when the winding pitch of the roving is coarsened during the machine stopping operation for doffing.

According to the second aspect of the invention, the tension during rough winding can be easily adjusted to an appropriate value in accordance with the spinning conditions.

[Brief description of drawings]

FIG. 1 is a partial front view of a winding tension adjusting device according to an embodiment of the present invention.

FIG. 2A is a partial cross-sectional view of a winding tension adjusting device, and FIG. 2B is a cross-sectional view showing a supporting state of a clip.

FIG. 3 is a schematic diagram of a drive system of a roving frame.

FIG. 4 is a schematic front view showing the entire winding tension adjusting device.

FIG. 5 is a schematic view showing a roving winding state after a full pipe signal is output.

FIG. 6 is a schematic view showing a winding state of roving yarn after a full pipe signal is output.

FIG. 7 is a partially cutaway front view of the molding apparatus of the second embodiment.

FIG. 8 is a schematic diagram showing a roving winding state after a full pipe signal is output.

FIG. 9 is a schematic view showing a winding state of roving yarn after a full pipe signal is output.

FIG. 10 is a schematic diagram showing a winding state of a roving yarn after a full pipe signal is output.

FIG. 11 is a schematic diagram showing a winding state of a roving yarn after a full pipe signal is output.

FIG. 12 is a schematic front view of a tension adjusting device of a modified example.

FIG. 13 is a schematic front view of a tension adjusting device according to another modification.

FIG. 14 is a partially cutaway front view of a conventional device.

[Explanation of symbols]

6 ... Bobbin rail, 10a, 10b ... Cone drum, 1
6 ... Switching mechanism that constitutes switching means, 17 ... Differential gear mechanism that constitutes lifting means, 22 ... Molding device that constitutes switching means, 27 ... Belt shifter, 28 ... Long rack, 35 ...
Lever constituting the moving means, 43 ... Similarly a motor, 45
… Similarly eccentric cam, 46… Similar link, 50, 51…
Adjusting bolts as the regulation means, 56 ... A control device as the control means.

Claims (2)

[Claims] 1. A bobbin rail up-and-down drive system in a roving machine equipped with an elevating means capable of adjusting a winding tension using a cone drum and changing an ascending / descending speed of a bobbin rail independently of a roving winding speed. Switching means for switching between ascending and descending drive, a long rack arranged so as to be movable along the axial direction of the cone drum and operated in conjunction with the switching means, and a long rack capable of moving integrally and relatively with the long rack. A belt shifter movably provided, a moving means provided integrally movable with the long rack and moving the belt shifter relative to the long rack, and after a coarse winding start signal for stopping doffing is output. And a control means for drivingly controlling the moving means to move the belt shifter relative to a long rack. Adjusting device. 2. The moving means comprises a structure in which a link connected to the belt shifter is driven by a forward and reverse rotation drivable motor arranged integrally with the long rack, and a torque motor is used as the motor and the belt shifter is used. 2. The roving winding tension adjustment of the roving machine according to claim 1, wherein the regulating means for contacting the belt shifter and regulating the relative movement amount of the belt shifter with respect to the long rack is provided on both sides in the moving direction of the belt shifter so that the abutting position can be adjusted. apparatus.