JPH0364608B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a roving end unraveling prevention device for preventing the roving ends of a roving bobbin doffed from a roving frame from unraveling.

Conventional technology In order to convey doffed roving bobbins from a roving frame to a spinning frame, a conveyance rail is provided between the roving frame position and the spinning frame position, and the bobbin carriage is movable on the conveyance rail. A roving conveying device is provided in which a roving bobbin doffed from a roving frame is suspended from a large number of bobbin hangers of the bobbin carriage, and the roving bobbin is conveyed to a spinning frame position in this suspended state. being developed. Furthermore, in order to load the roving bobbin transported to the spinning machine position onto the spinning creel, a sash exchanger has been developed which automatically exchanges the roving bobbin with an empty bobbin on the spinning creel.

Problems to be Solved by the Invention When the roving bobbin is transported by the above-mentioned roving transport device, or when the roving exchanger sets the roving bobbin on the spinning creel, the roving bobbin doffed from the roving machine is Because the roving end is not sufficiently attached to the roving winding part, the roving end separates from the roving winding part and hangs down while the roving bobbin is being transported or when changing the thread in the spinning machine, and then the hanging part There have been problems in that the rovings on the roving bobbin are unwound one after another due to the weight of the rovings, and the rovings on the roving bobbin are scattered around, causing various troubles.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has provided a frame with a carrier disposed movably by an appropriate moving mechanism, and a rough material doffed from a roving frame on the upper surface of the carrier. A peg which is adapted to be inserted into the lower hole of the thread bobbin is rotatably protruded, and a presser device which is arranged to press the outer peripheral surface of the roving bobbin which is inserted into the peg is provided. It is characterized in that it is provided with a bobbin rotating device that rotates the roving bobbin in the roving winding direction.

Operation: The lower hole of the roving bobbin doffed from the roving frame is attached to the peg on the conveyor, and the roving bobbin is conveyed to a desired position by the movement of the conveyor. In that case,
The outer peripheral surface of the roving bobbin attached to the peg is held down by the presser device, and the roving bobbin is rotated in the roving winding direction by the bobbin rotating device, thereby causing the roving end of the roving bobbin to is pressed against the roving winding part and is securely attached to the roving winding part.

Embodiment FIGS. 1 to 6 show an example in which the present invention is applied to a lifting device for a roving bobbin. In FIG. 3, numeral 1 is a roving frame installed in the factory, and numeral 2 is a spinning frame, and a plurality of these are installed depending on the production volume. Reference numeral 3 denotes a simultaneous doffing machine for doffing the roving bobbin 4 wound up by the roving frame 1, and as shown in FIG. All the roving bobbins 4 of the roving frame 16 are doffed at the same time. This simultaneous doffing machine 3 is configured as shown in, for example, Japanese Patent Application Laid-Open No. 57-106729, but the present application is not limited to that specific configuration, so the description here will be given. omitted.

Next, 6 is a roving conveying device for conveying the roving bobbin 4 doffed by the simultaneous doffing machine 3 to the spinning frame 2, and is constructed as follows. First, reference numeral 7 denotes a conveyance rail which is disposed at a high place between the roving frame installation position 1A and the roving frame installation position 2A, and is formed in a square cross section as shown in FIG. This conveyor rail 7 is composed of branch rails 8 arranged along each frame of the roving frame 1 and the spinning frame 2, and a trunk rail 9 that connects these branch rails 8. is supported by a bracket attached to the machine base or ceiling. A bobbin carriage 11 consisting of a plurality of transport bodies 10 is mounted on the transport rail 7.
is movably suspended along the transport rail 7. In the transport body 10, reference numeral 12 denotes a carriage bar, and a support rod 14 having a shaft support 13 at the upper end is fixed to the upper surface, and wheels 15 rotatably supported on both sides of the shaft support 13 are connected to the transport rail 7.
is placed on the supporting surface of the Further, bobbin hangers 16 are attached to the lower surface of the carriage bar 12 in a row at predetermined pitches P in the longitudinal direction thereof.
A bobbin hanger 1 is placed on the top surface of the carriage bar 12.
1 index pin every twice the mounting pitch P of 6.
7 are fixed so as to protrude from both edges of the carriage bar 12. A plurality of the transfer bodies 10 are bendable by connecting bars 18 and connection pins 19, and are connected so that the pitch between the bobbin hangers 16 of both the transfer bodies 10 is equal to the pitch P. The mounting pitch P of the bobbin hanger 16 is generally set to be twice the spindle pitch of the spinning frame 2.

Next, 20 is a bobbin inserting device for mounting the roving bobbin 4 doffed by the simultaneous doffing machine 3 to each bobbin hanger 16 of the bobbin carriage 11, and is installed near one end of the peck conveyor 5. It is composed of a transfer device 21 and a lifting device 22 that are installed. The transfer device 21 is supported by a pair of arms 23 rotatably mounted on a frame 21a by a predetermined amount, and cylinders 24 at the tips of these arms 23 so that they can be raised and lowered, and opened and closed by a cylinder (not shown). The upper end portion of the roving bobbin 4 attached to the peg 5a of the peg conveyor 5 is gripped by these gripping claws 25, and the upper end portion of the roving bobbin 4 attached to the peg 5a of the peg conveyor 5 is grasped and removed. Device 2
It is designed to be inserted into the peg described below in 2.
The lifting device 22 constitutes the roving end unwinding prevention device of the present invention, and is constructed as shown in FIGS. 1 and 2. In this elevating device 22, reference numeral 26 denotes vertical guide rails fixed to the frame 22a, and a pair of left and right guide rails are provided. Reference numeral 27 denotes a lifter, which is exemplified as a conveying body that is guided by guide rails 26, 26 so as to be freely raised and lowered, and a pair of guide rollers 28, 28 and a pair of regulation rollers 29, 29 are provided at both ends, respectively, at the top and bottom. These guide rollers 28,
28 sandwich the guide rail 26, and the regulating roller 29 contacts the guide rail 26 to lift the lifter 27.
maintains this attitude. The lifter 27 is raised and lowered by a predetermined amount by a suitable lifting mechanism operated by a cylinder or motor (not shown), such as the mechanism disclosed in Japanese Patent Application Laid-Open No. 58-41919. 32, 32 is the above lifter 27
A pair of pegs are rotatably protruded from the top via a bearing or the like, and are vertically opposed to the two bobbin hangers 16, 16 of the bobbin carriage 11 guided by the transport rail 7. It is located in These pegs 32, 32 are formed such that they can be fitted into the lower hole of the roving bobbin 4, and are provided with receiving portions 33, 33 for receiving the lower surface of the inserted roving bobbin 4. Reference numeral 34 denotes a presser device that presses the outer peripheral surface of the roving bobbin 4 inserted into the peg 32. In this holding device 34, reference numeral 35 denotes a leaf spring 34, which is exemplified as a holding member with a free end, and its base (lower part) is fixed to the lifter 27, and its tip is inserted into the peg 32 in a natural state. A pressing portion 3 is configured to come into pressure contact with the outer circumferential surface of the roving bobbin 4 in the state
5a. Further, the leaf spring 35 has an engagement piece 3 having a vertical engagement hole 36a at its tip.
6 are integrally fixed. 37 is frame 2
By fitting into the engagement hole 36a with the engagement pin illustrated as an engagement member fixed to the engagement member 2a, the pressing portion 35a of the leaf spring 35 is moved to a retracted position away from the outer peripheral surface of the roving bobbin 4. It is formed into a tapered shape so as to be curved. Note that a pair of the leaf springs 35 and the like are provided as shown in the figure. Although not shown, an engaging pin facing downward opposite to the engaging pin 37 shown in FIG. Leaf spring 3 against the outer peripheral surface of the roving bobbin 4
5 is released. The engaging member may be a wedge piece or a cam plate fixed to the frame 22a, and in that case, the plate spring 35 is engaged with the wedge piece or cam plate when the lifter 27 is lowered. What is necessary is just to provide an engagement piece whose tip part is moved outward. A bobbin rotating device 38 rotates the roving bobbin 4 inserted into the peg 32 in the roving winding direction. In this bobbin rotating device 38, 39 is a drive motor fixed to the lifter 27, and its drive shaft 39a
A pulley 40 is fixed to the. A pulley 41 is provided integrally with the peg 32, and a belt 42 is suspended between the pulley 41 and the pulley 40. Note that the lifter 27 is integrally provided with a dog, which operates upper and lower limit switches (not shown) when the lifter 27 is in the lowered position and the raised position, respectively.
The drive motor 39 is rotated when the dog comes off the lower limit switch when the lifter 27 is raised, and is stopped when the dog operates the upper limit switch.

Next, 49 is an intermittent feeding device, which is constructed as shown in FIGS. 5 and 6. In this intermittent feeding device 49, 50 is a hollow main body fixed to the transport rail 7 via a bracket 51;
A drive shaft 52 is rotatably supported at the center of the side surface, passing through the main body 50. The drive shaft 5
A chain wheel 53 is fixed to the center of the main body 50, and this chain wheel 53 is rotated in one direction via the chain wheel 35 and the chain 56 by a brake motor 54 with a reducer attached to the main body 50. It's like this. Drive shaft 52
Cranks 57, 57 are fixedly attached to both ends of the rollers so that their mounting directions are 180 degrees different from each other, and rollers 58, 58 are rotatably attached to the tips of these cranks 57, 57. On both sides of the main body 50, cross sliders 59, 59 are supported by two pairs of upper and lower guide rollers 60, 60 so as to be able to reciprocate in the longitudinal direction of the transport rail 7. Groove 59a, 5
9a is the crank 57, the roller 58 on the 57;
58 are fitted, and each half rotation of the drive shaft 52, the sloth sliders 59, 59 are moved in opposite directions with a stroke twice as long as the mounting pitch P of the bobbin hanger 16. Limit switches 61, 61 are attached to the main body 50 to detect the stroke end of the cross sliders 59, 59,
These limit switches 61, 61 are electrically connected so that the brake motor 54 comes to a sudden stop in response to commands from the limit switches 61, 61. Locking arms 62, 62 are pivotally attached to the cross sliders 59, 59 so as to be able to move up and down, and the distal ends of these locking arms 62, 62 are engaged with and disengaged from the index pin 17 of the bobbin carriage 11. The locking arms 62, 62, in which the grooves 62a, 62a are formed, are connected to the engagement grooves 62a, 6 at the rearward end of the cross sliders 59, 59 by the cylinders 63, 63 interposed between the locking arms 62, 62 and the main body 50.
2a is swung so as to engage with the index pin 17,
The engagement grooves 62a, 62a are configured to be disengaged from the index pin 17 at the forward end of the cross sliders 59, 59.

In the structure described above, when the roving bobbin 4 wound up by the roving frame 1 is to be conveyed to the spinning frame 2, the doffing machine 3 first doffs it all at once from the roving frame 1 onto the pegs 5a of the peg conveyor 5. Then, the roving bobbin 4 on the peg conveyor 5 is moved toward the bobbin insertion device 20, and the first two roving bobbins 4, 4 are moved to a position where they face the gripping claws 25, 25 of the transfer device 21. The movement of the peg conveyor 5 is stopped. Next, the gripping claws 25, 25 are attached to the roving bobbins 4, 4.
Grasp the upper end and pull it out from the pegs 5a, 5a, and remove the lifter 2 in the lowered state in the lifting device 22.
Insert it into the pegs 32, 32 on 7. in this case,
Engagement hole 36a of engagement piece 36 in presser device 34
is fitted into the engagement pin 37 and the pressing portion 3 of the leaf spring 35 is pressed.
Since the roving bobbins 5a are located outside the roving bobbin storage space on the lifter 27, the roving bobbins 4, 4 can be easily inserted into the pegs 32, 32, respectively, without coming into contact with the pressing portions 35a. The drive motor 39 in the bobbin rotating device 38 is stopped, and the pegs 32, 32 and the roving bobbins 4, 4 inserted therein are not rotated. On the other hand, the bobbin hangers 16, 16 supported by the conveyor rail 7 are attached to the pegs 3 on the lifter 27.
It has been moved to a position opposite 2 and 32 and stopped. Next, the lifter 27 moves up and lifts the upper ends of the roving bobbins 4, 4 to the bobbin carriage 11.
into the bobbin hangers 16, 16. In the above case, when the lifter 27 is slightly raised from the lowered position, the engagement hole 36a of the engagement piece 36 and the engagement pin 37
As a result, the pressing portion 35a of the leaf spring 35
is displaced inward by the elastic restoring force of the leaf spring 35 itself, and its pressing portion 35a comes into pressure contact with the outer peripheral surface of the roving winding portions 4a, 4a of the roving bobbins 4, 4 on the pegs 32, 32. Further, when the lifter 27 is slightly raised from the lowered position, the dog is disengaged from the lower limit switch, and the drive motor 39 of the bobbin rotating device 38 is rotationally driven by the signal from the limit switch. Due to the rotational drive of the drive motor 39, the drive shaft 39a rotates in the direction of the arrow, and the pegs 32,
32 and the roving bobbins 4, 4 inserted into the pegs 32, 32 are rotated in the roving winding direction. In this case, as described above, the pressing part 35a of the leaf spring 35 is in pressure contact with the outer peripheral surface of the roving winding part 4a of the roving bobbin 4, so that the rotation of the roving bobbin 4 causes the roving end to be moved to the roving winding part 4a. be pressed to ensure secure adhesion. The rotational drive of the drive motor 39 is stopped by a signal from the upper limit switch when the lifter 27 is raised to the raised position and the dock operates the upper limit switch. The peck conveyor 5 has a roving bobbin 4 thereon which is connected to the transfer device 2.
Each time the roving bobbins 4, 4 are taken out by 1, the next two roving bobbins 4, 4 are sent to the take-out position, and the lifter 27 of the lifting device 22 inserts the roving bobbins 4, 4 into the bobbin hangers 16, 16. After that, it descends again, and when the transfer device 21 transfers the next two roving bobbins 4, 4 from the peg conveyor 5 onto the lifter 27, it rises again. The lifter 27 is the bobbin hanger 1
When the roving bobbins 4, 4 are inserted into the bobbins 6, 16 and lowered, an appropriate detection means detects this, and the brake motor 54 with a reduction gear of the intermittent feed device 49 rotates the drive shaft 52. The rotation of the drive shaft 52 causes the cranks 57, 57 at both ends to rotate, causing one cross slider 59 to move forward and the other cross slider 59 to move backward. When it is moved to the rear end, the limit switches 61, 61 are activated to stop the brake motor 34 with a reduction gear. When one cross slider 59 is moved forward as described above, the locking arm 62 on the cross slider 59 locks the index pin 17 of the bobbin carriage 11 and moves the bobbin carriage 11 to the bobbin hanger 16.
It is moved in the transport direction by twice the mounting pitch P of. The locking arm 62 is connected to the limit switch 61.
When actuated, it is swung by the cylinder 63 and the engagement groove 62a and the index pin 17 are disengaged.
Also, the locking arm 62 on the other cross slider 59
When the limit switch 61 is activated, the cylinder 6
3, the engagement groove 62a is engaged with the next index pin 17 of the bobbin carriage 11.

When the bobbin carriage 11 is moved by twice the mounting pitch P as described above, the roving bobbins 1, 1 inserted into the bobbin hangers 16, 16 are also moved in a suspended state. The intermittent movement of the bobbin carriage 11 is performed every time the roving bobbins 4, 4 are inserted into the bobbin hangers 16, 16, and the required number of roving bobbins 4 are inserted into the bobbin hanger 16 of the bobbin carriage 11. Then, the bobbin carriage 11 is transferred to the spinning frame 2 position by the continuous feeding device 100. In this case, vibrations, air currents in the factory, etc. act on the roving bobbin 4 suspended from the bobbin hanger 16, and the ends of the roving tend to unravel. Since the yarn ends are held down by the roving winding section 4a, the unwinding of the roving ends is prevented, and as a result, unwinding of the roving ends causes yarn breakage in the spinning machine, insufficient roving length, fiber scattering, etc. This problem can be eliminated.

FIGS. 7 and 8 show an example of the implementation in a wagon-type doffing machine shown in, for example, Japanese Patent Application Laid-Open No. 61-174432, where 70 is movably arranged along the front surface of the roving frame 1e. In the doffing machine, two sets of peg bars 72 and 73 are installed on the frame 71 of the doffing machine so that they can be raised and lowered by an appropriate lifting mechanism. The frame 71 also includes a roving bobbin 4e of the roving frame 1e.
Petsugu 7 of Petsugbar 72 in a descending state after doffing
A transfer device 21e is provided for removing the empty bobbin 4e' inserted into the peg 75 of the peg bar 73 in the lowered state and inserting it into the roving frame 1e. Each peg 74 of the above pezug bar 72
is rotatably provided as in the example shown in FIGS. 1 and 2, and the roving winding of the roving bobbin 4e is performed by the drive motor (not shown) of the bobbin rotating device only while the peg bar 72 is raised. It is designed so that it can be rotated in this direction. Also, the presser member 7 is attached to the peg bar 72.
The base of the peg 6 is pivotally supported, and the presser member 76 is urged toward the peg axis by a spring 78 so as to abut against a stopper 77. This holding member 76 is tilted in the direction opposite to the peg axis by a solenoid 79 or a cam only when the peg bar 72 is in the lowered and raised states.
The pressing portion 76a is moved out of the roving bobbin storage space on the peg bar 72. The presser plate 66, spring 68, solenoid 69, cam, etc. constitute a presser device. Therefore, when the roving bobbin 4e is inserted into the peg 74 of the peg bar 72 in the lowered state and the peg bar 72 is raised, the pressing part 76a of the presser member 76 is pressed against the outer periphery of the roving winding part 4ae of the roving bobbin 4e. While being pressed together, the roving bobbin 4e is rotated in the roving winding direction,
As a result, the roving end is securely attached to the roving winding portion 4ae.

FIG. 9 shows an example of the peg conveyor 5f, in which 80 is a frame disposed along the front of the roving frame, and pulleys (not shown) are pivotally supported at both ends, and these pulleys have an endless shape. A belt 81 is suspended and rotated in one direction by a motor or the like. A large number of pegs 82 are rotatably mounted on the belt 81. A bobbin rotating device 38f is attached to one end of the frame 80 for rotating the roving bobbin 4f inserted into the peg 82 and transferred in the roving winding direction. This bobbin rotating device 38f is
A pair of rotating belts 83, 84 rotatably disposed on both sides of the transfer passage No. 2;
The rotating belt 8
3 and 84 sandwich the lower part of the roving bobbin 4f on the peg 82 and rotate it in the roving winding direction. 87 is a leaf spring constituting the holding device 34f;
One end is fixed to the frame 80, and a pressing portion 87a at the other end is positioned within the locus of movement of the roving bobbin 4f on the peg 82. After inserting the roving bobbin 4f doffed from the roving machine into each peg 82, the belt 81 is rotated to transfer the roving bobbin 4f.
On the way, the outer peripheral surface of the roving bobbin 4f comes into pressure contact with the pressing portion 87a of the leaf spring 87, and the roving bobbin 4
The lower part of f is sandwiched between rotating belts 83 and 84 and rotated in the roving winding direction, and as a result, the roving ends are attached to the outer peripheral surface of the roving winding section 4af.

Effects of the Invention As described above, in the present invention, when the roving bobbin is transferred, the roving bobbin is pegged on the conveyor to maintain its posture, and the outer circumferential surface of the roving winding portion of the roving bobbin is held down by the device. In this state, the roving bobbin is rotated in the roving winding direction by the bobbin rotating device, so that the roving end of the roving bobbin doffed from the roving machine is securely attached to the roving winding section. It is possible to prevent the roving ends from unraveling during the transfer of the roving bobbin or in the subsequent process, and to prevent troubles associated with the unwinding of the roving ends. Moreover, since the roving end is unraveled when the roving bobbin is transferred by the conveyor, the roving end can be unraveled using the time during which the roving bobbin is transferred.

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is a front view, FIG. 2 is a sectional view taken along the - line, FIG. 3 is a layout diagram of the roving conveyance device, and FIG. 4 is a front view near the end of the roving machine. Figure 5 is an enlarged sectional view along the line, and Figure 6 is a - line enlarged sectional view.
A line drawing, FIG. 7 is an explanatory diagram showing a different embodiment,
FIG. 8 is an enlarged view of the main part of FIG. 7, and FIG. 9 is a sectional view showing another different embodiment. DESCRIPTION OF SYMBOLS 1... Roving frame, 2... Fine spinning machine, 4... Roving bobbin, 22... Lifting device, 22a... Frame, 2
7...Lifter (carrier), 32...Petsugu, 3
4... Presser device, 38... Bobbin rotating device.

Claims (1)

[Scope of Claims] 1. A conveying body is movably disposed on the frame by an appropriate moving mechanism, and a lower hole of a roving bobbin doffed from a roving frame is inserted into the upper surface of the conveying body. A peg is rotatably protruded, and a presser device is provided that presses the outer peripheral surface of the roving bobbin inserted into the peg, and rotates the roving bobbin in the roving winding direction. A device for preventing unraveling of roving ends, comprising a bobbin rotating device. 2. Claim 1, characterized in that the carrier is constituted by a lifter disposed on the frame of the elevating device so as to be movable up and down, and a presser device and a roving bobbin rotating device are disposed on the lifter. The roving end unraveling prevention device described in . 3. A patent claim characterized in that the carrier is constituted by a peg bar that is movably disposed on the frame of a wagon-type doffing machine, and a presser device and a roving bobbin rotating device are disposed on the peg bar. range 1
The roving end unraveling prevention device described in . 4. A patent characterized in that a drive motor is installed on the conveyor, and a bobbin rotating device is constructed by hanging a belt around a pulley that is integrally provided on the drive shaft of the drive motor and a pulley that is integrally provided on the peg. A roving end unwinding prevention device according to claim 1. 5. Fix the base of a leaf spring with the free end to the carrier, position the leaf spring in a natural state so that it comes into pressure contact with the outer peripheral surface of the roving bobbin attached to the peg, and attach the frame to the base. The holding device is constructed by providing an engaging member that engages with the leaf spring when the carrier is in a descending state and bends the leaf spring to a retracted position away from the outer peripheral surface of the roving bobbin. A device for preventing unraveling of roving ends according to claim 1. 6. A transport body is constituted by a moving body of a conveyor disposed on a frame so as to be horizontally movable, a peg is rotatably provided on the conveyance body, and a presser device and a roving bobbin rotation device are disposed on the frame. A roving end unraveling prevention device according to claim 1, characterized in that: