JPS6344656B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an expanding/contracting device that radially moves the support roller of a spiral looper device for accumulating and dispensing strips, thereby expanding or contracting the radius of a rotating drum. .

[Background of the invention]

Traditionally, the accumulation of strips, which are sheet metal products,
The loop tower method, which stores strips vertically, and the loop car method, which stores strips horizontally, have been used as methods for dispensing strips, but these methods require a large amount of space and can only hold a limited amount of strips. I couldn't accumulate it.

For this reason, a spiral looper device as shown in FIGS. 1 and 2 has been proposed. In this device, a large number of support rollers 1 are arranged to form a rotating drum 2 having a cylindrical shape as a whole, and two of the rotating drums 2 are arranged coaxially. Then, the strip 3 is accumulated and wound about half on the first rotating drum 2A (hereinafter referred to as the input side rotating drum), then passed to the second rotating drum 2B (hereinafter referred to as the output side rotating drum), and further accumulated and wound about half of the time. It is something that is passed around. Between the inlet rotary drum 2A and the outlet rotary drum 2B, there are a number of S-shaped S drums 4 for transferring the strip 3 from the inside of the inlet rotary drum 2A to the inside of the outlet rotary drum 2B. It is formed by a helical roller 5. In addition,
The spiral looper device shown in FIG. 1 is a horizontal shaft type spiral looper in which the rotating shaft 2C of the rotating drum 2 is provided in the horizontal direction.

The structure of this conventional horizontal axis type spiral looper will be explained in more detail. Face plates 6 for arranging support rollers 1 forming the rotating drum 2 are provided at the center of the device and on the left and right sides of the device.

The left and right side face plates 6a are disc-shaped, and the center face plate 6b is annular. These three face plates are connected by a separator 7 at a predetermined interval, and the whole has a substantially cylindrical shape. Each face plate 6 is provided with a large number of rack rods 8 radially arranged in the radial direction. A pinion gear 9 is provided at both ends of the support roller 1, and this pinion gear 9 is connected to the rack portion 8 of the rack rod 8.
It meshes with a. A large number of support rollers 1 are arranged to form a rotating drum 2 having a cylindrical shape as a whole. In this way, the inlet rotating drum 2A is formed between the right side face plate 6a and the center face plate 6b, and the outlet side rotating drum 2B is formed between the center face plate 6b and the left side face plate 6a. Ru. An S drum 4 is provided between the inlet rotating drum 2A and the outlet rotating drum 2B. This S drum 4 is provided to transfer the strip 3 from the inlet rotary drum 2A to the outlet rotary drum 2B, and a large number of helical rollers 5 are arranged to form an S-shaped curved surface. It is something. The strip 3 is transferred from the inside of the inlet rotary drum 2A to the inside of the outlet rotary drum 2B.

The radius of the rotating drum must be expanded or contracted when the spiral looper accumulates and takes out the strips. For this reason, support roller 1
The radial arrangement position of should be adjusted as necessary. Conventionally, an electric drive device or a hydraulic drive device, which is a support roller expansion/contraction device for this adjustment, has been installed inside a rotating body formed by the rotating drum 2, the S drum 4, or the like.

[Problems with background technology]

For this reason, as the speed of the strip production line increases, the rotational speed of the rotating body increases, and the centripetal force causes oil leakage from the hydraulic drive unit, other dangers associated with the rotation of the electric drive unit, difficulty in maintenance, and damage to the outside of the rotating body. There were a number of drawbacks, such as the complexity of the connection with the

[Purpose of the invention]

The present invention has been made in view of the above problems, and the expansion/contraction drive device is all installed outside the rotating body, and the radius of the rotating drum can be expanded/contracted from the outside. The purpose of the present invention is to provide a spiral looper device that is safe and easy to maintain.

[Summary of the invention]

The support roller expansion/contraction device for a spiral looper of the present invention is provided with a rack rod to which one or two support rows are attached so as to be movable in the radial direction, and a pinion gear meshes with the rack of the rack rod. The pinion gear meshes with the internal teeth of a ring gear provided concentrically with the rotating drum. The radial position of the support roller can be adjusted by rotating the ring gear relative to the rotating drum or rotating it in the opposite direction.

Outside the rotating drum, an expansion/contraction gear for expanding or contracting the radial dimension of the rotating drum by intermittently speeding up or slowing down the rotation of the ring gear with respect to the rotating drum is provided on the external teeth of the ring gear. They are installed in a way that they interlock.

Various types of control devices are conceivable for controlling the expansion/contraction gear in this manner.

First, a reduction gear is installed at the end of the rotating drum shaft,
It is conceivable that a mechanical variable loop mechanism consisting of a planetary gear device or the like is installed between the reduction gear and the expansion/contraction gear, and a drive device is provided to drive the sun gear in the planetary gear device to rotate intermittently. . As this drive device, a cylinder device can be used that rotates a pinion gear provided coaxially with the sun gear via a rack. Alternatively, instead of this cylinder device, an electric motor that rotates a pinion gear provided coaxially with the sun gear may be used as a drive device.

It is also conceivable to control the expansion/contraction gear by using a differential gear instead of the planetary gear, and to intermittently speed up or slow down the rotation of the ring gear relative to the rotation of the rotating drum.

By controlling the rotational speed of the expansion/contraction gear from the outside in this way, the radial position of the support roller can be determined from the outside of the rotating body. Therefore, according to the present invention, there is no need to provide an electric drive device or a hydraulic drive device inside the rotary body for determining the radial position of the support roller, which eliminates the danger of doing so during high-speed operation of the rotary body, and prevents internal damage. It is possible to solve all problems related to maintenance and complicated structure due to connections between the inside and outside of the rotating body.

[Embodiments of the invention]

An embodiment of the present invention will be described in detail below with reference to FIGS. 3 to 7.

(Rotating body) The rotating body includes a rotating drum 2, an S drum 4, etc., as in the conventional spiral looper device. That is,
A face plate 6a is provided at the center of the device and on the left and right sides of the device.
6b, and these three face plates 6a and 6b are integrated by a separator 7 to form a tower frame which is a base on which the support roller 1 and the like are arranged. A drum rotation shaft 2C is present at the center of the face plates 6a, 6b, and this drum rotation shaft 2C is connected to a tower frame drive motor 10, so that the entire tower frame can be rotated.

Rack rod bearings 8b are fixedly attached to the face plates 6a, 6b, and the rack rods 8 are arranged radially in the radial direction of the rotating drum relative to the rack rod bearings, and are movable in the radial direction. Two support rollers 1 are attached to the rack rod 8. A face plate 6 is provided on the rack portion 8a of the rack rod 8.
Pinion gears 9 provided at a and 6b are in mesh with each other. This pinion gear 9 meshes with internal teeth 11a of a ring gear 11. This ring gear 11 is provided concentrically with the rotating drum 2 and is slidable on the face plate 6 and the sliding portion 11a, so that the rotating drum 2 and the ring gear 11 can rotate relative to each other. There is. The ring gear 11 also has external teeth 11b on its outer periphery.

(External part of the rotating body) An expansion/contraction gear 12 is provided outside the rotating body and meshes with the external teeth of the ring gear. Further, a control device for controlling the expansion/contraction gear 12 is provided outside the rotating body. This control device utilizes a planetary gear system 13 as shown in FIGS. 5 and 6. That is, reduction gears 14a, 14b, and 14c are provided at the shaft ends of the rotating drum, and the reduction gear 14c rotates the planetary gear 13b of the planetary gear device 13. Rotation is given to the expansion/contraction gear 12 by an outer peripheral gear 13c provided on the outer periphery of the planetary gear 13b.

A pinion gear 15 is provided coaxially with the sun gear 13a, and the pinion gear 15 is intermittently rotated by a cylinder device 17 via a rack 16.

(Operation of this embodiment) Next, the operation of this embodiment will be explained. If the amount of strip 3 wound around the inlet rotary drum 2A is the same as the amount of strip 3 fed out from the outlet rotary drum 2B, no strip is stored or dispensed in the spiral looper device. During such normal rotation, the rotation of the rotary drum 2 and the rotation of the ring gear 11 must be the same. Otherwise, the radius of the rotating drum will fluctuate unnecessarily and the spiral looper device will not operate stably. On the other hand, when the spiral looper device accumulates or dispenses strips, the radius of the rotating drum 2 must be adjusted as necessary. Need to speed up or slow down. That is, in order to adjust the amount of radial movement of the support roller 1 depending on the operating condition of the spiral looper device, it is necessary to control the relative rotation angle of the rotary drum 2 and the ring gear 11.

(During normal rotation of the rotating drum) As described above, during normal rotation, there should be no difference in the rotational speed between the rotating drum 2 and the ring gear 11, and the rotational speed difference Δn must be 0.
As described above, in this embodiment, the drum shaft end gear 14a of the rotating drum 2 is connected to the external tooth 1 of the ring gear 11 via the reduction gears 14b, 14c and the planetary gear device 13.
1b, and is configured to form a mechanically closed loop so that the number of rotations of the rotating drum 2 and the number of rotations of the ring gear are equal. Therefore, the rotation of the rotary drum is transmitted to the ring gear 11 through these closed loop mechanisms, and the rotation speed of the rotary drum 2 and the rotation speed of the ring gear 11 become the same. In this case, the sun gear 13a of the expansion/contraction planetary gear device is in a fixed state. Further, the reduction gear 14b serves as an idle gear and serves to ensure that the rotating direction of the rotating drum 2 and the rotating direction of the ring gear 11 are the same. Furthermore, as a condition for the rotation speed of the rotating drum 2 and the rotation speed of the ring gear 11 to be the same, when the rotation radius of the ring gear 11 is R and the rotation radius of the expansion/contraction gear is r, the lower The formula must hold true.

i=r/R (1) (When expanding or contracting the radius of the rotating drum) Next, when storing strips in the spiral looper device or discharging strips, adjust the radius of the rotating drum while rotating the rotating drum 2. There is a need. Alternatively, even if these accumulation and dispensing operations are not performed, the strip is transferred between the input side rotation drum and the output side rotation drum when the rotation drum rotates. The radius of the rotating drum 2 may be adjusted. Therefore, by rotating the sun gear 13a of the planetary gear device 13 at different times using the cylinder device 17, a rotation speed difference of ±Δn is given to the ring gear 11 with respect to the rotation speed n of the rotating drum 2. In other words, this rotational speed difference ±
Δn changes the radial position of the support roller 1.

The support roller 1, which has been moved in the radial direction due to this difference in rotational speed ±Δn, is returned to a state in which it can perform the next accumulation and dispensing when the accumulation and dispensing of the strip are completed.

Here, the operation of the cylinder must be controlled by the following conditions.

In other words, the following equation established from Figure 7 However, R _E1 ... Coil outer diameter of the inlet rotating drum R _E2 ... Coil inner diameter of the inlet rotating drum R _D1 ... Coil outer diameter of the outlet rotating drum R _D2 ... Coil inner diameter of the outlet rotating drum V _E ... ...Rotational speed V _D of the incoming rotating drum ... Rotating speed h of the outgoing rotating drum ... Determined by the driving distance of the cylinder, the planetary gear device 13, the expansion/contraction gear ratio i, etc. Based on these conditions, the CPU controlled by.

In the above embodiments, the control device for controlling the expansion/contraction gear 12 was a mechanical closed-loop mechanism including a planetary gear system, but in other embodiments, the expansion/contraction gear 12 could be controlled directly using an electric motor. For high-precision control, a closed-loop mechanism is not necessary.

Additionally, differential gearing can be used as an alternative to planetary gearing in a mechanical closed-loop mechanism. Further, as a drive device for intermittently rotating the sun gear 13a in the planetary gear device 13, an electric motor can be used instead of the cylinder device.

〔Effect of the invention〕

According to the support roller expansion/contraction device for a spiral looper of the present invention, the position of the support roller can be easily adjusted without installing an electric drive device or a hydraulic drive device inside the rotating body, so that the rotating drum can be rotated at high speed. Even in cases where the electric drive device is rotated, oil leakage from the hydraulic drive device, other dangers associated with the rotation of the electric drive device, and difficulty in maintenance can be eliminated.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a conventional horizontal axis type spiral looper device, FIG. 2 is a side view of FIG. 1, FIG. 3 is a side view of main parts according to an embodiment of the present invention, and FIG. 5 is a plan view of the entire device of this embodiment, FIG. 6 is an explanatory diagram of a gear group used as a control device of this embodiment, and FIG. 7 is a cylinder of this embodiment. (For convenience of explanation, the strips on the inlet side rotary drum and the strips on the outlet side rotary drum are drawn offset.) 1... Support roller, 2, 2A, 2B... Rotating drum, 3... Strip, 4... S drum,
5... Helical roller, 6, 6a, 6b... Rotating drum, 7... Separator, 8... Rack rod, 9... Pinion gear, 10... Tower frame drive motor, 11... Ring gear, 12... For expansion/contraction Gear, 13... Planetary gear device, 13a... Sun gear, 13b... Planet gear, 13c... Outer gear, 14a, 14b, 14c... Reduction gear, 15
...Pinion gear, 16...Rack, 17...Cylinder device.

Claims (1)

[Claims] 1. A device for accumulating and discharging strips, in which a large number of support rollers are arranged to form a cylindrical rotating drum, and this rotating drum is divided into two parts.
An S-shaped S-drum is arranged coaxially with the strips and passes the strip from the inside of one rotating drum to the inside of the other rotating drum. The rotating drum is rotated in one direction to accumulate strips,
In a spiral looper device that rotates in the other direction to dispense the strip, the rotating drum is provided with a plurality of rack rods that are movable in the radial direction of the rotating drum and each of which has one or more support rollers attached thereto. A pinion gear meshes with the rack, and internal teeth of a ring gear that is provided concentrically with the rotating drum and rotatably supported by the rotating drum mesh with the pinion gear. In the ring gear,
An expansion/contraction gear is provided meshing with the external teeth of the ring gear to apply relative rotation to the rotating drum and displace the position of the support roller in the radial direction of the rotating drum via the pinion gear and the rack rod,
A support roller expansion/contraction device for a spiral looper, further comprising a control device for controlling the expansion/contraction gear. 2. In claim 1, the control device for controlling the expansion/contraction gear is provided with a reduction gear disposed at the end of the rotating drum shaft, and includes a planetary gear device between the reduction gear and the expansion/contraction gear. A support roller expansion/contraction device for a spiral looper, which is a mechanical closed-loop mechanism and is equipped with a drive device for intermittently rotating the sun gear in this planetary gear device. 3. A support roller expansion/contraction device for a spiral looper according to claim 2, wherein the drive device is a cylinder device that rotates a pinion gear provided coaxially with a sun gear via a rack. 4. A support roller expansion/contraction device for a spiral looper according to claim 2, wherein the drive device is an electric motor that rotates a pinion gear provided coaxially with a sun gear.