JPS62156019A - Hoop winding device - Google Patents

Abstract

PURPOSE:To make the structure of a reel shaft simple and compact and to remarkably increase the diameter by performing movement of the reel shaft in the axial direction through rolling bearings set on a winding device body frame. CONSTITUTION:A mandrel shaft 101a of a reel shaft 101 is supported by a winding device body frame 3 through a couple of roller bearings 104a and 104b rotatally and movably in the axial direction. A gear 105 surrounding the periphery of the shaft 101a is rotatally set on the frame 3 through a bearing 15 and a boss 17 having a periphery 17a of a gear-shaped joint 16 is fixed on the periphery of the shaft 101a. Internal teeth 18 on the inside surface of the gear 105 are meshed with external teeth 17a to transmit a rotating torque from a driving gear 6 to the shaft, 101a and to make the boss 17 slidable in the axial direction against the gear 105. Therefore, the torque from the gear 6 is directly transmitted to the shaft 101a through the gear-shaped joint 16 and also is moved in the axial direction by a driving device 13 through the bearings 104a and 104b.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a strip take-up device in which a take-up reel shaft for strip material can be shifted in its axial direction.

<Prior art> When winding a strip material such as a steel strip into a coil shape around the take-up reel shaft of a winding device in a rolling line or a process line, the strip material fed into the winding device meanders, so that the winding is difficult. In order to prevent the end faces of the coils from becoming uneven in the shape of bamboo shoots, an edge position controller is usually used to shift the take-up reel shaft in the axial direction integrally with the take-up device body to follow the meandering of the strip material. There is. However, in the case of a carrousel type winding device or the like in which a plurality of take-up reel shafts revolve, it is necessary to move only the take-up reel shaft alone in the axial direction.

As shown in FIG. 2, which shows the cross-sectional structure of such a conventional take-up reel shaft, the reel shaft (1) is a mandrel shaft (1a).
and a sleeve (2), and the sleeve (2) has rolling bearings (4a), (
The driving gear (
6). The mandrel shaft (1a) is driven to rotate integrally with the sleeve (2) through a key 7), etc., but is rotated axially independently within the sleeve (2) through bushes (8a>, (8b)). The mandrel 1ull (1a) is equipped with a plurality of circumferentially divided segments (9) at its tip, and a rotary cylinder (10) attached to its rear end allows the mandrel to be moved around the radius. The strip material (11) can be detachably held on the mandrel shaft (1a) by expanding and contracting in the direction. It is freely shifted in the axial direction by a mandrel shaft shifter 1 to a drive device (13) comprising a known #A groove such as a lever with a hydraulic cylinder.

In addition, the reference numeral (14) in the figure is an out-of-the-box bearing, which is supported by a support stand (not shown) attached to the base during normal winding work, but in the case of a carousel type winding device, the winding When the take-up reel shaft (1) revolves together with the winding device main body, this outboard bearing (14) separates from the support base and winds up the strip material 11 in an overhanging state.

<Problems to be Solved by the Invention> In the conventional carousel type winding device shown in FIG. 2, the mandrel shaft (1a
) is in a cantilevered state with a large variable weight coil (11') at the tip, and as the operating time elapses, the bushing (8a
>, (8b), the primary critical speed against bending vibration decreases due to the increase in the gap due to wear of the sliding surface and the accompanying decrease in bearing rigidity.

In addition, since the mandrel q8!11 (1a) has a keyway (7a) in which the torque transmission key (7) engages, it can be bent in two directions orthogonal to each other. Since the force on the rigid axis is zero and the force on the horizontal support axis is zero, a secondary critical speed appears due to the difference in bending law and the action of gravity, making it easy to take a picture with the rotation speed of the winding tool @ (1a). Become.

Furthermore, a slight gap is formed between the key (7) and the keyway (7a) for shifting the mandrel shaft (1a), but this gap increases due to wear as the operating time progresses. The mandrel shaft (1a) undergoes double axial movement within one rotation, and as a result, vibrations due to the secondary critical speed are promoted.

On the other hand, in recent years, process lines have tended to be faster in order to improve productivity, and the number of revolutions of the take-up reel shaft (1) has tended to become faster. Therefore, during operation, the rotation of the mandrel shaft (1a) resonates with vibrations caused by the above-mentioned second critical speed and second critical speed, and often the mandrel shaft (1a)
), damage to the bushes (8a>, (8b)) due to retching corrosion, and damage to the tooth surfaces of the drive gears (5), (6).

Therefore, the take-up reel shaft (1) needs to have a sufficiently large diameter in consideration of the resonance caused by these critical speeds and secondary critical speeds, but the conventional take-up reel shaft (1) has a double structure. Moreover, since a key is used in the rotary torque transmitter groove, there is a drawback that the equipment needs to be large-sized in order to counteract the resonance, resulting in extremely high cost.

The present invention has been made in view of the above-mentioned problems, and the structure of the reel shaft is made compact to prevent vibrations caused by the secondary critical speed, while increasing the secondary critical speed and significantly increasing the rotational speed of the reel shaft. It is an object of the present invention to provide a winding device for a strip with low equipment cost.

Means for Solving the Problems〉 The strip winding device according to the present invention includes a mandrel shaft supported on a winding device main body stand via a rolling bearing so as to be rotatable and reciprocating in the axial direction, and the mandrel shaft. a boss that is integrally provided on the shaft and has a joint on the outer peripheral surface; a joint that has a joint on the inner wall with which the joint of the boss engages slidably in the axial direction; and a bearing on the winding device main body frame; The gear wheel is rotatably supported through the drive gear.

Action> The drive rotation of the gear causes the mandrel shaft integrated with the boss to rotate through the engagement between the joint hand and the joint hand of the boss, thereby winding up the strip. The mandrel shaft shifts axially with respect to the gear at the joint of the boss.

<Embodiment> As shown in FIG. 1, which shows the cross-sectional structure of the reel shaft portion of an embodiment of the strip winding device according to the present invention, the reel shaft (10
The mandrel shaft (101a) of 1) is rotatably and axially movably supported by the winding device main frame (3) via a pair of cylindrical roller bearings (104a>, (104b). ＞Gear (105
) is rotatably attached to the winding device main frame (3) via a bearing (15), and furthermore, this mandrel shaft (101
A boss (17) having an outer ring (17a>) of a wheel-shaped joint (16) such as a spline is fixed to the outer periphery of the gear (105) by shrink fitting or the like. 18
), which meshes with the external teeth (17a) and transfers the rotational torque from the drive gear (6) to the mandrel shaft (10).
1a), and the post 17 can move in the axial direction relative to the gear 105. The rest of the structure is the same as the conventional device shown in FIG. 2, and members having the same functions as those shown in FIG. 2 are denoted by the same reference numerals. Note that (18a>
, (18b) is a locking nut.

Therefore, the torque of the drive gear (6) is directly transmitted to the reel shaft (101) via the gear joint (16), while the shift drive device (13) transfers the torque to the cylindrical roller bearing (104a).
(104b) can be freely moved in the axial direction.

<Effects of the Invention> According to the strip winding device of the present invention, a gear-shaped joint such as a spline is used in the rotational torque transmission mechanism of the reel shaft.
Keys used in conventional devices can be eliminated. In addition, since the axial movement of the reel shaft is carried out via a rolling bearing provided on the frame of the winding device, the structure of the reel shaft is extremely simple and compact, and its diameter has been reduced compared to conventional ones. It has become possible to increase it significantly. As a result, the reel shaft has an integral structure and the bushing can be eliminated, and equipment costs can be significantly reduced, including the elimination of the oil supply system to the moving surface of the bushing. In addition, since the key of the mandrel shaft can be abolished and its shaft diameter can be significantly increased, the -second critical speed is greatly increased, and the shaft rigidity is equal in all directions, preventing vibration due to the second-order critical speed. High-speed winding is now possible.

Furthermore, since the reel shaft is shifted via a rolling bearing, the gap between the sliding parts can be made smaller than the bushing of conventional equipment, which prevents unrestrained vibration of the shaft and increases the primary critical speed. be able to. In addition, the diameter of the reel shaft can be increased, the elastic deflection of the shaft is reduced, vibrations can be prevented, and damage to the tooth surface of the reel shaft drive gear can be prevented, leading to a reduction in maintenance costs. Note that the device of the present invention can of course be used as a rewinding device.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a reel shaft according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a conventional reel shaft. Further, in the figure, numeral 3 is the take-up device main frame, 6° 105 is the drive gear of the reel shaft, 10 is the rotary cylinder for opening and closing the segments, 13 is the shift drive device, 15 is the bearing, 16
17a is a gear-shaped joint, 17a is an external tooth, 18 is an internal tooth, 101 is a reel shaft, and 104a. '104b is a cylindrical roller bearing.

Claims (1)

[Claims] A mandrel shaft supported on a take-up device main body frame via a rolling bearing so that it can rotate freely and reciprocate in the axial direction, a boss that is integrally provided with the mandrel shaft and has a joint on its outer peripheral surface, and this boss. A strip winding device having a joint on an inner wall with which the joint engages slidably in the axial direction, and a gear supported rotatably by a bearing on the winding device main body frame. .