JPH0867422A - Doffing device for take-up winder - Google Patents

Abstract

PURPOSE: To accurately align the axis of a spindle of a take-up winder. CONSTITUTION: A doffing device 1 is provided so that it can be run along a row of a take-up winder with a spindle 11 on which a package P is wound, and provided liftably with a shaft 9 facing the spindle 11 for receiving the package P. It features that a sensor S to detect the top end of the spindle 11 is provided at the top end of the shaft 9 and, based on the detection of the top end by the sensor S, the lifting of the shaft i is stopped. The stop position depends on the height of the axis of the spindle 11, and is not affected by a variation in height of the spindle 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a doffing device having a shaft for receiving packages from a plurality of take-up winders arranged in a row, and more particularly, to accurately center the shaft of the shaft for each take-up winder spindle. Regarding what can be matched.

[0002]

2. Description of the Related Art A conventional take-up winder doffing device shown in FIG. 8 is known. A large number of take-up winders 10 are arranged in a row as shown in the drawing, and their spindles 11 are projected toward the passage. Further, in a normal take-up winder 10, two spindles 11 at a winding position and a standby position are projected on a rotatable turret plate, and a package is wound around the spindle 11 at the standby position. The device allows the package to be pushed out. Further, a peg stand 51 for receiving the package transfer is arranged at the end of the row of the take-up winders 10.
A platform 52 is installed along the 0 row, and a bobbin supply device 53 corresponding to each take-up winder 10 is provided on the platform 52.

The doffing device 1 is a take-up winder 10.
Can travel freely on the rails 7 laid along the rows, and the column 5 is provided with the first elevating body 4A and the second elevating body 4B so that the first elevating body 4A and the second elevating body 4B can be moved up and down. The first shaft 9A and the second shaft 9B are provided so as to be capable of advancing and retracting toward the spindle 11 and being rotatable between a horizontal position in a vertical plane and a vertical position.

The doffing operation of the doffing device 1 is as follows. Specific take-up winder 10 spindle 1
When 1 reaches the standby position for holding the package, the doffing device 1 runs to the front of the take-up winder 10 and stops. Then, the first shaft 9A is advanced in the direction of the arrow a, and the tip end of the spindle 11 and the tip end of the first shaft 9A are fitted into contact with each other. Then take-up winder 1
A pusher device (not shown) of 0 pushes out the package, the first shaft 9A receives the package, and the first shaft 9A retreats and pivots in a vertical posture. Meanwhile, the second shaft 9B rises in a vertical posture, and an empty bobbin is inserted from the bobbin supplying device 53. Further, the second shaft 9B turns horizontally and becomes the same height as the first shaft 9A.

Next, the fitting between the tip of the first shaft 9A and the tip of the spindle 11 is released, and the doffing dolly 1 is caused to travel a distance L in the direction of the arrow b, and the tip of the second shaft 9B and the spindle 11 are moved. The tip is brought into abutting engagement with each other, and the empty bobbin is pushed toward the spindle 11 by the pusher device (not shown) of the second shaft 9B, and the second shaft 9B is withdrawn. Then, the doffing cart 1 travels to the front of the peg stand 51, and pushes the package to the peg stand with a pusher device (not shown) of the first shaft 9A. Then, it waits at the home position until it runs toward the next take-up winder 10.

By the way, the installation accuracy of the take-up winders 10 arranged in a large number is independent, and the spindles 11 of the take-up winders 10 are not located at the same height, and there is a slight difference in height. Have Therefore, when the tip end of the spindle 11 of the take-up winder 10 and the tip ends of the shafts 9A and 9B are brought into contact with each other, it is necessary to absorb the above-mentioned height difference. Therefore, the vertical stop positions of the lifting bodies 4A and 4B provided with the shafts are made constant, and the shafts 9A and 9B have a floating structure supported by springs.
A and 9B are designed to follow the spindle 11 (see Japanese Patent Laid-Open No. 48-61752 and Japanese Utility Model Laid-Open No. 4-97769).

[0007]

However, in the above doffing device, the structure of the shaft is complicated because the floating mechanism is incorporated, and the allowable range for centering is small due to the restriction of the structure of the floating mechanism. If there is a large difference in the height of the spindle shaft center due to surface conditions, etc., there is a problem that centering is difficult.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a shaft whose axis is accurately aligned with the spindle of a take-up winder. It is to provide a doffing device having.

[0009]

A take-up winder doffing device according to the present invention for solving the above-mentioned problems is provided so as to be freely movable along a row of take-up winders having a spindle around which a package is wound. In a doffing device having a shaft facing a spindle and capable of moving up and down to receive the package, a sensor for detecting the tip of the spindle is provided at the tip of the shaft, and the shaft of the shaft is detected based on the detection of the tip by the sensor. The main point is to stop lifting.

Further, it is preferable that the sensor is an optical sensor, and the optical sensor detects the tip of the spindle by detecting a circular reflecting plate arranged at the center of the tip of the spindle. It is preferable that the optical sensor provided at the tip of the shaft is provided so that its mounting height can be adjusted in the vertical direction of the shaft.

[0011]

The sensor provided at the tip of the shaft detects the tip of the spindle and stops the lifting / lowering of the lifting / lowering body. Therefore, the stop position depends on the height of the spindle axis, and the height of the spindle varies. Even if there is, it is not affected. Further, it is convenient to use an optical sensor as the sensor, and if the reflecting plate for detecting the optical sensor is circular and is arranged at the center of the spindle tip, the tip position of the rotating spindle can be accurately detected. Further, if the mounting position of the optical sensor is configured to be adjustable in the ascending / descending direction, when adjusting the stop position of the ascending / descending body, only one adjustment with respect to the reflecting plate on the spindle side is required.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a doffing device for a take-up winder according to the present invention, FIG. 2 is a rear view, FIG. 3 is a view showing a wiring state between respective control units distributed, and FIG. FIG. 5, FIG. 5 is a front view of the shaft, FIG. 6 is a bottom view of the shaft, and FIG. 7 is a view showing a mounting state of the reflection plate on the spindle.

First, the overall construction of the doffing device will be described with reference to FIGS. 1 and 2. 1 and 2, the doffing device 1
Is a trolley 2, a column 5 erected on the trolley 2, and an elevating body 4 provided on the column 5 so as to be vertically movable.
The lifting / lowering body 4 is provided with a shaft holding portion 20 that is provided so as to be capable of advancing and retreating in the horizontal direction and that includes a shaft 9, and a position detecting portion 3 that is provided at the upper end portion of the column 5.

On the other hand, a plurality of take-up winders 10 are installed in parallel in the direction perpendicular to the plane of the drawing. The take-up winder 10 has a spindle 1 projecting from it, and a bobbin B on which a package P is wound is inserted in the spindle 10 at the standby position. A reflecting plate 16 for detection by an optical sensor described later is attached to the tip of the spindle 11. Reference numeral 12 is a main body frame above the spindle 11 in which a touch roller rolling on the package P and a traverse device are installed. The diameter d of the shaft 9 is set smaller than the diameter D of the spindle 11 by about 10 mm. This is to facilitate the transfer of the package P from the spindle 11 to the shaft 9.

Rails 7 are installed along the row of the take-up winders 10 in a direction perpendicular to the plane of the drawing, and the cart 2 of the doffing device travels on the rails 7 by means of wheels 17.
The trolley 2 is provided with a third controller 15.

The elevating body 4 is movable up and down along a vertical guide rail 22 provided on the support column 5, a horizontal guide rail 19 is provided, and a shaft holding portion 20 is provided on the horizontal guide rail 19 so as to be movable back and forth. ing. Further, the shaft holding portion 20 is provided with a shaft 9 protruding from the take-up winder side so that the shaft holding portion 20 can be swung from the horizontal direction to the vertical direction shown in the drawing.
An optical sensor S described later is installed at the tip of the shaft 9. Further, the lifting body 4 is provided with a second control unit 14.

The position detector 3 is provided with a proximity switch 21. On the other hand, a stop dog 18 is provided for each weight (take-up winder) on the ceiling along the orbit of the doffing device, and when the proximity switch 21 detects the stop dog, the doffing device 1 stops at that position. It is like this. This stopping accuracy is set to about ± 2 mm. Further, the position detection unit 3 is provided with an encoder 8 for detecting the absolute position of the doffing device and a first control unit 13, and a cable track 23 is connected thereto.

Next, the first, second and third control units 13, 1
The function sharing of 4 and 15 will be described with reference to FIG. As described above, the first control unit 13 is provided in the position detection unit 3 at the upper end of the support column 5, the second control unit 14 is provided in the lifting body 4 that moves up and down along the support column 5, and the third control unit 15 is provided. It is provided on the trolley 2. The first control unit 13 stores a control unit for one lifting motor, a kuseg indicator (8 digits), a rotating lamp for abnormality notification, two buzzers each, etc., and the second control unit 14 moves forward / backward / turns. For example, a control unit for five motors for driving, 13 sensors, etc. are stored, and a control unit for one traveling motor, 5 sensors, remote control switch, breaker, etc. are stored in the third control unit 15. There is. The third controller 15 is connected to the first controller 13 with four cables 25 and one cable 29 for various sensors. The second controller 14 is connected to the first controller 13 with five cables 28. The first control unit 13 is connected to the ground board 24 by a cable bear 23 composed of three cables.

Conventionally, the control units 13 to 15 have been collectively arranged on the trolley 2 shown in FIG. 2. In this way, the control units 13 to 15 have control objects such as motors and sensors built therein. Then, the control units are distributed and arranged. as a result,
The wiring that connects the control target and the command unit need only be the wiring inside the control unit, and the only wiring that remains between the control units remains.
As shown in the figure, the number of wires is reduced as compared with the conventional case. Further, the respective control units 13 to 15 are distributed and arranged on the trolley 2, which is the main part of the doffing device, the position detection unit 3 and the lifting body 4, but there is always a dead space in these main parts 2 to 4, The control units 13 to 15 are installed using these dead spaces. Therefore, the space is effectively used as a whole as compared with the case where they are collectively arranged as in the prior art, and the entire doffing device has a neat appearance and is downsized.

Next, the structure of the shaft 4 is shown in FIGS.
Will be described. In FIG. 4 which is a side view and FIG. 5 which is a front view, the shaft 9 has a disk-shaped holding plate 9 b having a rectangular through hole 27 attached to the tip of a tubular body 9 a with a screw 31. An optical sensor S is held by a bracket 26 on one side surface of the through hole 27 in the vertical direction, and is attached with the axial direction of the optical sensor S facing outward. The bracket 26 is L-shaped, and a bent step portion 26a for attaching the optical sensor S is provided in a portion 26c in contact with the through hole 27, and a long hole 26b for the screw 30 on one side surface of the through hole 27.
And are provided. That is, the mounting position of the optical sensor S on the shaft 9 can be adjusted in the vertical direction by loosening the screw 31 and moving the bracket 26 up and down.

The optical sensor S comprises a light projecting element 40 and a light receiving element 4.
The light from the light projecting element 40 is reflected by a reflecting plate, which will be described later, and is received by the light receiving element 41, and is located at a position separated from the reflecting plate by a predetermined distance. In this embodiment, a laser fiber sensor is used as this type of optical sensor S, but other optical sensors can be used. Thus, since only the optical sensor S is provided at the tip of the shaft 9, the pusher device can be built in the hollow portion of the shaft 9. Such a pusher device will be described with reference to FIGS. Note that FIG. 6 (a)
FIG. 6A is a top view and FIG. 6B is a side view.

The pusher device comprises a pushing member 33, an attachment 36 to which the contact plate 33 is attached, a belt 32 connected by the attachment 36, a pulley 35 on which the belt 32 is stretched, and the like. There is. This attachment 36
A roller 39 is rotatably held on the shaft 9 via a shaft 37 and a bearing 38, and the roller 39 is fitted and guided in a guide groove (not shown) provided on the shaft 9. The push-out member 33 pushes out the package received from the spindle when the package is transferred to a peg stand or the like. As a result of the simplified structure of the shaft 9, the pusher device, which was conventionally exterior, is installed in this way, and the entire shaft 9 is made compact.

Next, the reflector 16 attached to the tip of the spindle 11 of the take-up winder 10 will be described with reference to FIG. In FIG. 7, the tip 1 of the spindle 11
A circular reflector 16 is attached to the center of 1a.
The reflector 16 is made of a white plastic cap. On the other hand, since the spindle tip surface 11a is black, the optical sensor detects this color transition. Further, since the reflection plate 16 is circular and is attached to the center of the spindle 11, the vertical position of this color change does not change depending on the stop position of the spindle 11, and the stop position of the shaft of FIG. The accuracy can be increased.

Next, the operation of the doffing device described above will be described with reference to FIG. In FIG. 1, when the doffing device 1 is in a traveling state, the elevating body 4 is elevated to the upper part of the column, and the shaft 9 is also pivoting in the vertical direction. The doffing device 1 arrives at the front of the take-up winder 10, and the proximity switch 2
When 1 detects the stop dog 18, it stops. Then, after the shaft 9 rotates horizontally, the elevating body 4 descends at high speed (arrow). Next, when the shaft 9 descends from a predetermined stop position to a position L1 of 10 mm and a dog (not shown) provided on the vertical guide rail 22 is detected, the shaft holding unit 20 advances and the shaft 9 moves 30 mm from the tip of the spindle. Move forward to position L3 (arrow).
The reason why the shaft 9 is advanced after being lowered to a predetermined position is to avoid the body frame 12 of the take-up winder. Then, it slows down and descends at a low speed (arrow). The upper surface of the shaft 9 is 1 to 2 mm from the upper surface of the spindle 11.
When descending to the lower position L3, the optical sensor S moves to the spindle 1
The first reflection plate 16 is detected and stopped.

Thus, the reason for decelerating and descending at the end is to prevent an error in the stop position due to the inertia of the lifting body. In addition, the shaft 9 from the spindle 11 to 1-2
The reason why the package P is stopped at a position lower by mm is to prevent it from being caught when the package P is received. Then, the full package P is pushed out from the spindle 11 onto the shaft 9 by a pusher on the spindle side (not shown). The shaft that has received the full package P performs the reverse operation. That is, it rises at a low speed (arrow), retreats to the initial position (arrow), and rises rapidly to the initial position (arrow). Then, the shaft 9 rotates to the vertical direction. This is to prevent the package from falling off the shaft. Next, the package is moved to a peg stand or the like (not shown) to carry the package to the storage area.

In the above embodiment, the case where the doffing device only receives the package has been described, but the doffing device receives both the package and supplies the empty bobbin (see FIG. 8). ), The present invention can be similarly applied. In this case, it is only necessary to attach the optical sensor to at least one of the two shafts. This is because once the height of one shaft is determined, the other shaft only has to follow that height.

[0027]

As described above, the take-up winder doffing device of the present invention detects the tip of the spindle with the sensor provided at the tip of the shaft, and stops the lifting of the shaft based on the detection of the sensor. Since the spindle is directly detected, the tip of the shaft can be perfectly aligned with the tip of the spindle even if there is a difference in the installation height of each take-up winder. In particular, since the shaft is simplified as compared with a shaft having a built-in floating mechanism, it is possible to incorporate the drive unit of the pusher device, and it is possible to achieve compactness. Further, it is convenient to use an optical sensor as the sensor, and if the reflecting plate for detecting the optical sensor is circular and is arranged at the center of the spindle tip, the tip position can be accurately detected regardless of the stopping angle of the rotating spindle. . Further, if the mounting position of the optical sensor is adjustable, only one adjustment is required when adjusting the stop position of the lifting body.

[Brief description of drawings]

FIG. 1 is a side view of a doffing device for a take-up winder according to the present invention.

FIG. 2 is a rear view of the doffing device of the take-up winder of the present invention.

FIG. 3 is a diagram showing a wiring state between control units arranged in a distributed manner.

FIG. 4 is a lateral vertical sectional view of a shaft.

FIG. 5 is a front view of a shaft.

FIG. 6 is a view showing a pusher device for a shaft.

FIG. 7 is a diagram showing a mounting state of a reflection plate on a spindle.

FIG. 8 is a perspective view showing an application example of the present invention to a doffing device that both receives a package and supplies an empty bobbin.

[Explanation of symbols]

 P package S Optical sensor 1 Doffing device 4 Lifting body 9 Shaft 10 Take-up winder 11 Spindle 11a Tip part 16 Reflector plate 26 Bracket 26b Long hole

Claims (3)

[Claims] 1. A doffing device which is provided so as to be movable along a row of take-up winders having a spindle around which a package is wound, and which has a shaft facing the spindle for receiving the package and being capable of moving up and down. A take-up winder doffing device, wherein a sensor for detecting the tip of the spindle is provided at the tip of the shaft, and the lifting and lowering of the shaft is stopped based on the detection of the tip by the sensor. 2. The sensor according to claim 1, wherein the sensor is an optical sensor, and the optical sensor detects the tip of the spindle by detecting a circular reflector disposed at the center of the tip of the spindle. Take-up winder doffing device. 3. The take-up winder doffing device according to claim 2, wherein the optical sensor provided at the tip of the shaft is provided so that the mounting height can be adjusted in the vertical direction of the shaft.