JPS6328686B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drum type wire storage device.

Traditionally, dancer pulley type wire storage devices are widely known, but with this device the storage amount is very short, at most a few tens of meters, and in order to increase the storage amount, it is necessary to increase the number of pulley stages. This has the drawback of requiring a long distance to move, and ultimately requiring a large amount of installation space. Another drawback is that the tension applied to the filament body fluctuates significantly when the pulley moves during wire storage and wire removal.

In order to eliminate such drawbacks, a drum type wire storage device as shown in FIGS. 1 and 2 has also been developed. This conventional drum-type wire storage device is rotatably provided with an input-side hollow shaft 101 into which the filament body w is introduced, and an output-side hollow shaft 102 through which the filament body w exits to the winding side. Both hollow shafts 101, 102
By rotating the winding arm 104 attached to the input-side hollow shaft 101 around a cylindrical wire storage drum 103 that is supported in a stationary state during the process, the wire body w is wound and stored, Conversely, the rewinding arm 10 is attached to the outgoing hollow shaft 102.
By rotating the wire storage drum 103 in the opposite direction, the storage wire of the wire storage drum 103 is rewound and discharged. Although this conventional drum-type wire storage device has a larger amount of wire storage than a dancer pulley type device, it is a traverse device for aligning and winding the wire body w on the wire storage drum 103, that is, the winding pulley 1 in the figure.
Since a device for moving 04A in the axial direction of the wire storage drum 103 is provided on the winding arm 104, the weight of the winding arm 104 increases, making high-speed rotation disadvantageous. Furthermore, as shown in FIG. 3, when the accumulated radiation amount becomes 0, there is a moment when the filament w is stretched in a straight line between the winding pulley 104A and the unwinding pulley 105A.
At this time, there was a drawback that the tension applied to the filament body w became extremely excessive, leading to a risk of wire breakage.

The present invention has been made to eliminate all the drawbacks of the prior art, and one embodiment thereof will be described with reference to FIGS. 3 to 5.

The hollow cylindrical hollow shaft 3 on the input side has bearings 2A, 2A.
An outgoing hollow shaft 5 having a similar shape is rotatably supported by bearings 2B, 2B and is coaxially opposed to the incoming hollow shaft 3. The pair of frame plates 33 and 35 are rotatably supported by the incoming hollow shaft 3 and the outgoing hollow shaft 5, respectively, and are connected to both of these hollow shafts by a coaxial shaft rod 34, which will be described later. This constitutes a frame body that supports the wire storage drum D. The sun gear 30A fixed to the incoming hollow shaft 3 and the sun gear 30B fixed to the frame plate 33 are planetary gears 31A and 31B supported on both ends of the support shaft 32 attached to the incoming hollow shaft 3. In order to form a planetary gear mechanism that meshes with the sun gear 30,
A and the gear ratio of the planetary gear 31A, and the sun gear 30
When the tooth ratio of B and the planetary gear 31B is equal,
When the entrance wire hollow shaft 3 rotates, the frame body constituted by the frame plates 33 and 35, and therefore the wire storage drum D, remains completely stationary.

A substantially L-shaped winding arm 4 is attached to the entry line hollow shaft 3, and guide pulleys 37, 38 for guiding the linear body 1 are provided on this arm. A winding pulley 39 is also attached to the free end of the winding arm 4. Similarly, the unwinding arm 6 is attached to the output side hollow shaft 5, and the guide pulley 4 is connected to the rewinding arm 6.
1 and 42 are provided. The free end of the unwinding arm 6 passes over the frame plate 35 and connects to the wire storage drum D, which will be described later.
It extends to approximately the midpoint of the axial length L, and a rewinding pulley 40 is attached to the end.

Next, the wire storage drum D of this invention will be explained. The wire storage drum D has a plurality of belt conveyors arranged equiangularly around the outer periphery of a pair of frame plates 33 and 35 arranged opposite each other, and, to be more precise, is formed into a hollow polygonal column shape. . This belt conveyor is constructed so that a belt 20 is passed between timing pulleys 19 and 21 so that the conveying direction of the belt coincides with the axial direction of the polygonal column, and it should be named a traverse conveyor due to its function. . Although FIG. 5 shows an example in which a total of nine traverse conveyors are provided, it should be noted that at least two traverse conveyors can sufficiently function as a wire storage drum. Note that 22 is a band-shaped sliding guide plate that prevents the belt 20 from bending inward in the radial direction.

Next, the drive mechanism of the traverse conveyor of this wire storage drum D will be explained. A gear 8 is attached to the end of the incoming hollow shaft 3, and this gear 8 engages with a spur gear 9 supported on the frame plate 33, and a spur gear 10 is fixed to the same shaft as this spur gear 9. After
The spur gears 11, 12, the connecting shaft 27, and the spur gear 14 are rotated in this order. Double disk-shaped spur gears 15 and 16 are rotatably supported on the frame plate 35 on the opposite side.
Rotation is transmitted from this spur gear 15, that is, the spur gear 16 integral therewith, to the spur gear 17 (in this embodiment, 8
rotation is transmitted to the The rotation transmitted to the spur gear 17 causes a timing pulley 19 at one end of the traverse conveyor to rotate at a low speed via a reduction gear 18 such as a worm and a worm wheel.

As the name traverse conveyor suggests, this conveyor is connected to the winding pulley 39 by the winding arm 4.
It serves to align and wind the wire body 1 which is wound around the wire storage drum D through the wire storage drum D. Therefore, for each revolution of the winding arm 4, the belt 20 must advance by the diameter of the filament 1. The amount of advance of the belt 20 can be adjusted by replacing the spur gear 11 at the intermediate position. That is, spur gear 1
1 is an adjustment gear for adjusting the amount of traverse of the driver conveyor.

Next, referring to FIG. 4, a description will be given of the entire drive system of the device of the present invention and the accumulated radiation dose detection mechanism within frame A in the figure. In FIG. 4, the winding arm 4, unwinding arm 6, wire storage drum D, etc. are shown schematically in a simplified manner, but the reference numbers for the parts are of course the same as those in FIG. 3. There is. Below, explanations of the parts that have already been explained will be omitted. The input-side hollow shaft 3 is rotationally driven via a chain sprocket 7 fixed thereto. This driving force is transmitted from the drive motor 50A to the chain sprocket 49.
A, 48A, clutch 47A, chain sprocket 45A, and 7. A chain sprocket 46A is fixed to the shaft of the chain sprocket 45A, and the rotation of this shaft, that is, the rotation of the incoming hollow shaft 3, is controlled by the chain sprocket 57.
A, 58A, and 61A are transmitted to one shaft of the differential detection device 62. Note that 70 is a winding device for the filament 1 provided on the output side.

The driving relationship of the outgoing hollow shaft 5 is exactly the same as that of the incoming hollow shaft 3, so the explanation will be omitted, but in the case of the incoming hollow shaft 3, each transmission element has a subscript A.
Please note that the subscript B is added to distinguish between the ``B'' and the ``B''. In this way, the rotation of the outgoing hollow shaft 5 is input to the other shaft of the differential detection device 62. Incoming hollow shaft 3 and outgoing hollow shaft 5
Of course, the rotation directions are opposite to each other, but the difference in rotation speed is the output of the differential detection device 62,
In other words, it can be extracted as the number of rotations of the chain sprocket 63. In other words, the difference between the amount of wire stored on the wire storage drum D that is proportional to the rotation speed of the winding arm 4 and the amount of discharged wire that is proportional to the number of rotations of the unwinding arm 6, that is, the amount of stored wire that remains on the wire storage drum D is It can be detected as the rotational speed of the chain sprocket 63 of the differential detection device 62. The above is the configuration and operation of the accumulated radiation dose detection mechanism.

Next, the stored radiation dose control device shown in frame B in FIG. 4 will be explained. A pair of timing pulleys 66A,
There is a mark 68 on the belt 71 that is passed around 66B.
is attached, while a suitable synchro angle detector 67 is positioned such that its detection arm 72 can engage this mark 68. In other words, the mark 68 is configured to be able to move along a belt 71, and this belt 71 is connected to the amount of wire stored in the wire storage drum D via the chain sprocket 63, the chain sprocket 64, and the reducer 65. given proportional movement.

Next, with reference to FIGS. 6a, b, and c, the control of the accumulated radiation dose by the device of the present invention will be explained.

(i) During steady operation at a constant speed for both incoming and outgoing lines.

For example, if the device of the present invention is used between an extruder and a winding device, the incoming line will be the extruded product line from the extruder. This extruder is in steady operation, and the winding device is moving the extruded product line at a constant speed ν.
When the wire is wound in the wire storage drum D, the winding arm 4 and the unwinding arm 6 both rotate at the same rotation speed N (but in opposite directions) as shown in FIG. A small amount of the striatum 1 is stored. However, at this time, the synchro angle detector 67 of the storage dose control device detects the angle δ° formed between the mark 68 and the detection arm 72, and outputs a control signal so that δ=±0°. The winding speed of the winding device 70 is controlled so that the winding device 72 is placed in a horizontal position (angle δ=0°).

(2) When the incoming wire is at a constant speed and the outgoing wire is zero (due to winding drum replacement).

At this time, of course, the wire continues to be stored in the wire storage drum D. Therefore, as shown in FIG. 6b, only the winding arm 4 rotates with a rotational speed N in the winding direction, and the unwinding arm 6 remains stationary. As a result, the mark 68 of the stored dose control device B moves clockwise as shown by the arrow and advances to a position outside the control range ±θ of the detection arm 72 of the synchro angle detector 67. At this time, the synchro angle detector 67 outputs a signal such that δ = θ = ±0° as in the case (i), but this occurs because the winding device 70 is stopped while the winding drum is being replaced. No control signal received. In other words, the rewinding arm 6 remains stopped without being rotated.

(iii) When the line is entered at a constant speed and the winding drum has been replaced and winding is resumed.

After the winding drum has been replaced, a new empty drum is attached and the winding device 70 starts operating. The winding device 70 detects δ=θ= from the synchro angle detector 67.
In order to receive a control signal such as ±0°, the detection arm 72 first enters the proportional control band ±θ°, and then aims for a steady operating state where δ=±0. For this reason, the winding device 70 is first made to run at a linear speed (v+β) higher than the steady speed, and the rewinding arm 6 is commanded to rotate at a rotational speed N+α higher than the steady rotational speed N. In this way, the wire storage drum D
The stored radiation dose decreases, and the stored radiation dose control device B marks 6.
8 moves counterclockwise and the detection arm 72 enters the proportional control band ±θ° of the synchro angle detector 67, the synchro angle detector 67 moves so that the angle δ formed by the detection arm 72 becomes ±0. Then, the rotational speed of the rewinding arm 6 is gradually decreased from N+α to N so that the winding arm 4 and the rewinding arm 6 are both at the same rotational speed N, that is, the state of (i) mentioned above. It is controlled so that it becomes true.

The operating state of the storage dose control device described in (i), (ii), and (iii) above is shown in a time chart as shown in FIG. 7. From this chart, it can be seen that as already explained, the rotation speed of the winding arm 4 is always the same rotation speed +N, and the operation of the input side of this invention apparatus, for example, the extruder, can be continued without stopping. . In addition, the rotational speed of the rewinding arm 6 is a constant rotational speed -N in a steady state (the negative sign indicates that the rotational direction is opposite to that of the winding arm), but it temporarily stops when the winding drum is replaced, and then The rotation speed is -
It can also be seen that the speed increases to (N+α) and later returns to the steady state of -N.

As can be seen from the above explanation, the device of this invention has the following features: (i) the traverse device for winding the wire storage drum is not provided on the winding arm as in conventional devices, but is provided on the wire storage drum itself; Therefore, the rotation of the winding arm can be increased, which has the effect of increasing the manufacturing process speed of extrusion from the extruder and winding. Also
(ii) The storage dose control device always controls the storage dose to a constant level, so no undue tension is applied to the wire during storage and discharge, and (iii) the manufacturing process is completely continuous. It has the advantage of being easy to use and can be automated.

[Brief explanation of the drawing]

1 and 2 are simplified side sectional views illustrating a conventional drum type wire storage device, FIG. 3 is a side sectional view showing an embodiment of the device of the present invention, and FIG. 4 is a side sectional view of the device shown in FIG. 3. A simplified diagram showing the drive system, the storage radiation amount detection mechanism, and the storage radiation amount control device. Figure 5 is a cross-sectional view taken along the line V-V in Figure 3. Figures 6 a, b, and c explain the operation of the storage radiation amount control device. FIG. 7 is a diagram showing a time chart showing the operation of the storage amount control device. 1... Wire body, D... Wire storage drum, 3... Incoming line hollow shaft, 4... Winding arm, 5... Outgoing line hollow shaft, 6...
Rewinding arm, 19, 21...timing pulley, 20...belt, 33, 35...frame plate, A
...Stored dose detection mechanism, B...Stored dose control device.

Claims (1)

[Scope of Claims] 1 (a) A plurality of traverse conveyors each consisting of a belt 20 stretched between a pair of timing pulleys 19 and 21 are connected to the outer periphery of a pair of frame plates 33 and 35 that are arranged facing each other. (b) a wire storage drum D formed in the shape of a hollow polygonal column and mounted so that the conveyance direction of the belt coincides with the axial direction; (c) an outgoing hollow shaft 5 which is rotatably provided on the opposite side of the wire storage drum and has an unwinding arm 6; A drum type wire storage device. 2 (a) A plurality of traverse conveyors each consisting of a belt 20 stretched between a pair of timing pulleys 19 and 21 are
(b) a wire storage drum D formed in the shape of a hollow polygonal column and mounted on the outer periphery of the pair of frame plates 33 and 35 so that the conveyance direction of the belt coincides with the axial direction; (c) an input side hollow shaft 3 which is rotatably provided on the side of the wire storage drum and has a winding arm 4; (c) a rewind arm 6 which is rotatably provided on the opposite side of the wire storage drum; (d) a built-up radiation amount detection mechanism that detects the difference in rotational speed between the winding arm and the unwinding arm; A drum-type wire storage device comprising a storage dose control device B that controls the rotational speed of the winding arm and the unwinding arm according to the dose.