JP2503154Y2 - Mill roll stand - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention holds the roll-shaped base paper for producing corrugated cardboard in a corrugated machine at an axial center and sequentially supplies it in accordance with the required amount. The present invention relates to a wind device or a mill roll stand of a roll-shaped raw paper rewinding machine of a rotary printing machine.

(Prior Art) FIGS. 4 to 5 are explanatory views of a general conventional mill roll stand. As shown in FIG. 4 and FIG. 5, the mill roll stand of the unwinding device has a main body stand 13, a pair of arms 2, an arm elevating device 14, an arm horizontal moving device 15, a rolling center 1, and other illustrations as main elements. The operation device, the control device, the drive devices of the respective parts, and the like. And as a function, the main body stand fixedly installed at a predetermined position on the floor of the corrugated sheet manufacturing line
Hold the rolling center 1 to the tip of 13,
A pair of arms provided opposite to each other so that the screw rod 16 and the like can slide in the left-right direction via the arm horizontal movement device 15 and can be swung by the arm elevating device 14 with the other end arm shaft 12 as a fulcrum. Two sets of 2 are attached to the front and back of the device. The arm shafts 12 of the pair of arms are pivotally supported on the left and right frames 18 by bearings 17 at both ends via sliding keys (not shown), and a lever 19 fixed to the arm shafts is rotated via a cylinder 20 connected to the other ends. By moving it, the rolling center 1 part at the tip of the arm 2 is vertically rocked.

Next, the mounting of the roll-shaped base paper 6 will be briefly described.
The roll-shaped base paper 6 carried in from the outside by the roller conveyor 11 and placed at a predetermined position is mounted by the following procedure. The rolling center 1 pivotally supported by the tip of the arm 2 is rotated downward by the operation of the cylinder 20 in a state of being opened to the left and right larger than the width of the roll base paper 6, and when it coincides with the center of the roll base paper 6 at the height position. Stop. And the next signal causes arm 2 to move horizontally.
The roll-shaped base paper 6 is slid to the center side via 15 and the center core tube part is held by the rolling center 1. Then, it is lifted up to a predetermined height by the cylinder 20, and the setting as a mill roll stand is completed.

In addition, the roll-shaped base paper 6 can be attached to the pair of arms 2 provided on the opposite side by the same procedure, and the standby base paper 6 may be put on standby as a spare so that the supplied base paper is used up and connected to continue production. it can. As described above, the corrugated cardboard sheets can be continuously manufactured by alternately connecting the roll-shaped base papers 6 sandwiched and attached to the two arm sets. Further, the order change or the replacement of the base paper 6 due to the end of use can be performed by the reverse procedure of the mounting.

However, in the conventional system, as shown in FIGS. 4 and 5, both ends of the arm shaft 12 are mounted with bearings 17 on the main frame.
13 Since the frame is axially fixedly supported on the side surface of the frame, when the arm is swung, the arm 2 swings around the arm shaft 12 as a fulcrum. There was a structural defect that the horizontal distance S from the center position of the main body stand to the rolling center portion fluctuated according to the elevation angle of. Therefore, depending on the diameter of the roll-shaped base paper 6, there is a possibility that the center of the rolling center 1 may be significantly displaced from the center of the paper tube. Note that P ₁ and P _{2 in} FIG. 4 are horizontal shift amounts between the center of the paper tube, which varies depending on the diameter of the roll-shaped base paper 6, and the axis of the rolling center 1.

In view of the problems of the arm moving type mill roll stand, a mill roll stand configured to vertically elevate the axis of the rolling center 1 within a predetermined range has been proposed in recent years. However, in all of these devices, the fulcrum shaft 12 of the arm 2 is moved with respect to the main body base 13 fixedly provided. In other words, the gantry body fixedly installed
13 against the eccentric bearing or the arm shaft 12 at the end of the swing arm.
Since it is of a type in which the fluctuation of the horizontal distance S due to the arm ascending / descending is offset (absorbed), it becomes structurally complicated in relation to the weight of the roll-shaped base paper 6 and the device is used to obtain strength. Problems such as high weight and high manufacturing costs remained.

(Problems to be Solved by the Invention) As described above, the pair of arms in the conventional mill roll stand swings up and down with the arm shaft pivotally supported via the bearings fixedly supported on the side surfaces of the left and right frames. Therefore, there is a drawback that the locus of the rolling center of the tip of the arm draws an arc. On the other hand, the center of the roll-shaped raw paper conveyed from the outside via the roller conveyor is always located on the center vertical line of the roller conveyor regardless of its diameter, so the rolling center axis and the roll-shaped raw paper are At the center of, the deviation of P ₁ or P _{2 in} Fig. 4 will occur depending on the sheet diameter. Due to the above structural defects, the rolling center is forcibly moved by the rolling center when the roll-shaped base paper is mounted, and when the roll-shaped base paper is replaced due to an order change, etc., the base paper is opened and attached while being displaced from the roller conveyor center. There was fear. This defect is not only a damage to the outer peripheral surface of the paper and the core tube portion and a failure of the apparatus, but also an obstacle to automation and a major factor that impairs safety of work.

The present invention has been proposed in order to solve the above conventional problems.

Therefore, according to the present invention, an arm for supporting a mill roll is attached to a mill roll stand main body so as to be capable of swinging up and down around an arm shaft as a fulcrum, and the center of the roll base paper is supported by the arm. In the mill roll stand configured as described above, the mill roll stand main body is configured to be movable in the horizontal direction with respect to the center of the roll-shaped base paper in association with the vertical movement of the arm. Is a means for.

(Operation) With the above configuration and function, in order to absorb and correct the fluctuation of the horizontal distance due to the arc locus of the rolling center by moving it together with the main body stand to which the fulcrum shaft position, which is the swing center of the arm, is fixed, The rolling center can be located on a vertical line that passes through the center of the conveyor over a range. Therefore, the center of the paper tube and the center of the rolling center can be perfectly matched regardless of the diameter of the roll-shaped base paper to be attached and detached.

(Embodiment) Hereinafter, the present invention will be described based on an embodiment of the drawings.
FIG. 1 is a structural explanatory view of a mill roll stand showing an embodiment of the present invention. In the figure, the rolling center 1,
Functions of general components such as the arm 2 are the same as those described in the section of the prior art.

The present invention has been proposed with respect to a defect relating to the elevation of the arm of the conventional mill roll stand. The structure will be described below. As shown in FIG.
It is arranged at the lower part of the main frame 3, and is configured to be able to roll on a rail 5 laid on the ground and move in the diameter direction of the roll-shaped base paper 6. Reference numeral 7 in the figure denotes a screw rod for transportation screwed into a part of the gantry 3, which is directly connected to the shaft of a drive device (motor) 8 installed on the ground G and freely rotated by the operation of the drive device 8. The position of the gantry 3 can be moved by rotating the screw rod by the drive motor. Again 9
Is a potentiometer that detects the swing angle of the arm 2 that holds the roll-shaped base paper 6 up and down, and the detected arm 2 angle is fed back to the drive device 8 that moves the main frame 3 via the controller 10. .

Next, the operation of the mill roll stand will be described. Second
As shown in the figure, the core tube of the roll-shaped base paper 6 that is detachably attached is always located on the perpendicular line passing through the center of the transport roller conveyor 11 regardless of the diameter D thereof. It suffices to vertically elevate the roll-shaped raw paper 6 between the minimum radius r and the maximum radius R at an angle θ. In addition, the center of the rolling center 1 has an arcuate locus, so when it is located at the angles θ ₁ and θ _3, it shifts P ₁ inward from the center of the roller conveyor, and conversely θ.
P ₂ shifted to outside of the device in between _2. Therefore, if the gantry body 3 is moved and corrected in the opposite direction according to the deviation amount P, both deviation amounts P are canceled out, and the rolling center 1 can always move (elevate) on the vertical line passing through the center of the roller conveyor 11. It will be possible.

The position (angle) of the arm 2 is detected by the potentiometer 9 as described above, and the shift amount P corresponding to the angle is fed back to the gantry moving means (driving device 8) via the controller 10 to be controlled in a roll shape. The rolling center 1 whose center is matched regardless of the diameter of the base paper 6 allows the base paper 6 to be reliably and automatically attached and detached. The gist of the present invention is that when the roll-shaped base paper 6 is attached or detached, the arm shaft that serves as a swinging fulcrum of the arm 2 is used.
There are 12 positions that can be changed by means of the movement of the gantry 3, and by using the position of the arm shaft 12 that can be changed, the ascending / descending locus of the leading end rolling center 1 is on the vertical line passing through the center of the roller conveyor 11 which is the means for loading the roll-shaped base paper 6. It can be set to. Therefore, various methods can be considered for the gantry moving means, the interlocking control means, and the like for the same function.

For example, as means for moving the gantry, various means capable of moving horizontally, such as a hydraulic cylinder mechanism, a rack and pinion mechanism, a linear motor mechanism, can be used instead of the motor and shaft of this embodiment, and the interlocking control means can be used. For this, various means such as electric / hydraulic control or control by a microcomputer can be used. Further, the swinging angle detecting means of the arm is not limited to the potentiometer, and it goes without saying that means for detecting the height position of the rolling center attached to the arm from the floor surface may be adopted. Needless to say, the movement correction of the gantry 6 is also an example.

(Effect of the Invention) As described in detail above, in the mill roll stand according to the present invention, the mill roll stand is moved horizontally in association with the raising and lowering of the arm. Even if it is displaced from the center position of the roller conveyor that conveys
Since the deviation can be eliminated by moving the mill roll stand horizontally, this allows the core tube center and the rolling center part of the roll-shaped sheet on the roller conveyor fixedly laid in the machine front-back direction to be completely aligned. This makes it easy and secure to attach and detach the roll-shaped sheet. Therefore, it is possible to minimize the damage of the roll-shaped sheet paper and the core tube and the breakdown of the device, facilitate the automation, and ensure the safe workability. Further, since the gantry body of the mill roll stand is moved, reliability in strength and accuracy can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a mill roll stand showing an embodiment of the present invention, FIG. 2 is a functional explanatory view of the same mill roll stand, FIG. 3 is a detailed explanatory view of essential parts in FIG. 2, and FIG. FIG. 5 is a side view of a conventional mill roll stand, and FIG. 5 is a plan view of the same. Description of the main parts of the figure 1 …… Rolling center 2 …… Arm 3 …… Main body stand 4 …… Wheels for traveling 5 …… Rail 6 …… Roll base paper 7 …… Screw rod for transport 8 …… Driving device (motor) ) 9 …… Potentiometer 10 …… Controller 11 …… Roller conveyor 12 …… Arm shaft 19 …… Lever 20 …… Cylinder

Claims (1)

(57) [Scope of utility model registration request] 1. A mill roll stand in which an arm for supporting a mill roll is attached to a main body of a mill roll so as to be capable of swinging up and down with an arm shaft as a fulcrum so that the center of a roll raw paper can be supported by the arm. A mill roll stand characterized in that the mill roll stand main body is configured to be movable in the horizontal direction with respect to the center of the roll-shaped base paper in association with the lifting and lowering operation of the arm.