JPH0452214Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an unloading device for unloading a winding roll after winding up a strip onto a table or the like.

[Prior art] For example, in a slitter winder, etc.
A wide web of paper is cut to the required width and wound around a core to a certain length.

In recent years, as printing technology has become faster, the winding diameter of the winding roll has tended to increase, and the amount of winding rolls has also been increasing.

Therefore, great care must be taken when removing the heavy winding roll from the winding device and placing it on the table.

Conventionally, as shown in FIG. 3, when the winding of the winding roll a is completed, a lifter b below the winding roll a rises to place the winding roll a with the stopper c protruding. Next, it returns to a position at the same height as the table d, the stopper c is retracted, and the take-up roll a rolls on the table d and is discharged.

[Problems to be solved by the invention] However, the winding roll a that winds up thick and thin paper has uneven winding diameter between the winding rolls a or within the winding roll a, and With the lifter b that rises to a certain height, the paper was not lifted up by the lifter b because it was loose from the thin part, and it was difficult to remove it from the winder.

Furthermore, since the lifter b is raised and lowered by the fluid pressure cylinder f, it does not necessarily have a stable structure;
When the winding diameter of the winding roll a becomes uneven as described above, an uneven load is applied to the lifter b, which causes problems in terms of safety and mechanical stability.

Furthermore, the lifter b has approximately the same length as the winding drum e, and even when there is only one winding roll a, the entire lifter must be raised and lowered.

[Means for solving the problems] The present invention was made with the aim of solving the problems of the conventional lifter described above and making it possible to unload individual winding rolls stably and reliably. At least one pair of support frames are arranged on at least one side of the winding drum so as to be tiltable with the winding side as a support point, and a tilting hydraulic cylinder is connected to each of the support frames to provide support for each support frame. The frame is provided with a movable roll support body, each of the support frames is provided with a rotation angle detector, and one of the support frames is provided with a take-up diameter detector for detecting the roll diameter of the take-up roll; a support frame inclination angle calculator that calculates the inclination angle of each of the support frames based on a winding diameter detection signal from a take-up diameter detector; and a support frame inclination angle calculator that calculates an inclination angle of each of the support frames based on a winding diameter detection signal from the support frame inclination angle calculator; and a tilt angle signal from the support frame inclination angle calculator and each rotation angle detection and a comparison calculation controller that controls the supply of pressure fluid to each of the tilting fluid pressure cylinders so as to compare detected angle signals from the device and tilt each of the support frames until both signals become equal. The present invention relates to a take-up roll unloading device.

[Operation] The inclination angle of each support frame that supports the take-up roll is calculated by the support frame inclination angle calculator based on the take-up diameter detection signal from the take-up diameter detector, and the inclination angle of each support frame that supports the take-up roll is calculated by the support frame inclination angle calculator. Pressure fluid is supplied to each of the tilting fluid pressure cylinders so as to compare the tilt angle signal and the detected angle signal from each of the rotation angle detectors by a comparison calculation controller and tilt each of the support frames until both signals become equal. When the supply is controlled, each support frame is tilted by the tilting fluid pressure cylinder to the position where the take-up roll is in contact with the ground, so that the same number of support frame pairs as the number of take-up rolls are stably tilted, and the winding Rolls can be unloaded safely and reliably.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment of the present invention, in which a take-up device 2 for a take-up roll 1 is arranged in a staggered manner on both sides of a take-up drum. That is, a pair of support frames 4, 4' are pivotally connected by pins 5, 5', respectively, at an interval equal to or larger than the width of the take-up roll 1, so that they can rotate in parallel in a vertical plane. The piston rods 7, 7' of the hydraulic cylinders 6, 6' disposed below the support frames 4, 4' are connected with pins 8, 8' to the lower side of the support frames 4, 4', so that the piston rods 7, 7' protrude and By retracting each of the support frames 4, 4'
be able to rotate.

Arc-shaped gears 9, 9' are provided at the pivot points of the pins 5, 5' of each of the support frames 4, 4', with the pins 5, 5' as centers, and rotary rotation angle detectors 10,
Pinion 1 fixed to detection shaft 11, 11' of 10'
2 and 12' are meshed with each of the gears 9 and 9'.

A take-up roll support 13, 13' is disposed movably over substantially the entire length in the longitudinal direction on each of the support frames 4, 4'. The winding roll support 13, 13'
is movable on each support frame 4, 4' and has a chuck device for holding the winding roll 1.

Furthermore, a take-up diameter detector 14 is provided in the longitudinal direction of the side surface of one of the support frames 4 and 4' for detecting the roll diameter of the take-up roll 1 in a non-contact manner using a magnetic or optical sensor. There is.

In the figure, reference numeral 15 indicates a table installed below the discharge side of the take-up roll 1 of the support frames 4, 4'.

Next, a control circuit for determining the rotation angle of the support frames 4, 4' from the detection value of the winding roll diameter by the winding diameter detector 14 will be explained with reference to FIG.

The winding diameter detection signal from the winding diameter detector 14 is sent to the support frame inclination angle calculator 16, which calculates the inclination angle of the support frames 4, 4' from the winding diameter of the winding roll, and calculates the inclination angle signal. P _A is sent to the comparison calculation controller 17.

Sending the tilt angle signals P ₁ and P ₂ from the two rotation angle detectors 10 and 10' to the comparison calculation controller 17, respectively, to compare them with the tilt angle signal P _A ,
When P ₁ <P _A and P ₂ <P _A , the solenoid valves 18 and 18' remain switched to the x and z sides, respectively, so that pressure fluid is supplied to the rod side of each of the fluid pressure cylinders 6 and 6'. shall be. Support frame 4, 4'
During tilting, if the difference between P ₁ and P ₂ is within the predetermined allowable angle difference ΔP, the solenoid valves 18 and 18' are held as they are, and if the difference between P ₁ and P ₂ is larger than ΔP, then Set the larger solenoid valve of P ₁ and P ₂ to neutral and hold the other solenoid valve as it is. When the difference between P ₁ and P ₂ is within ΔP, the one solenoid valve changes from neutral to x or z. Allows switching to the side.

When P ₁ or P ₂ becomes equal to P _A , each solenoid valve 18, 18' is respectively switched to a neutral position.

With the above configuration, when the winding is finished, the winding diameter of the winding roll 1 is determined by the winding diameter detector 1.
4, the winding diameter detection signal is sent to the support frame inclination angle calculator 16, and the support frame is determined from the relationship graph between the winding diameter and the inclination angle, which is input and set in advance to the inclination angle calculator 16. The inclination angles of the frames 4, 4' are calculated, and the inclination angle signal P _A is sent to the comparison calculation controller 17.

At the same time as the winding operation is completed, each solenoid valve 18, 18' is automatically or manually switched from the neutral position to the x and z sides, respectively, and pressure fluid is supplied to the rod side of each fluid pressure cylinder 6, 6'. is,
Each piston rod 7, 7' is retracted, and each support frame 4, 4' is tilted in the downward direction about the pin 5, 5', respectively.

The tilting angle of each of the support frames 4, 4' is determined by the pinions 12, 12' of the rotation angle detectors 10, 10' by arc-shaped gears 9, 9' of the pin pivot parts of each of the support frames 4, 4'. They are rotated and detected, and the detected angle signals P ₁ and P ₂ are sent to the comparison calculation controller 17, respectively.

While P ₁ and P ₂ are smaller than P _A , this indicates that each support frame 4, 4' is not tilted to the target angle, so each solenoid valve 18, 1
8' remains switched to the x or z side.

At this time, it is necessary to synchronize the tilting of each support frame 4 _, 4' to prevent the supported take-up roll ₁ from tilting. If the value becomes larger than the allowable angle difference ΔP, the solenoid valve 18 or 18' on the side of the support frame 4 or 4' with the larger tilting angle is temporarily switched to neutral. The other solenoid valves 18 or 18' are kept on the x or z side, and when the difference between P ₁ and P ₂ becomes smaller than ΔP, the solenoid valves 18 or 18' that have been temporarily switched to neutral are is x or z
side, and the retraction of the piston rods 7, 7', that is, the tilting of the respective support frames 4, 4', continues.

When P ₁ or P ₂ becomes equal to P _A , each solenoid valve 18, 18' is switched to neutral, and the tilting of each support frame 4, 4' is stopped, and at the same time, the take-up roll 1 is moved to the table 15. The winding roll 1 can be taken out by removing the chucks at both ends.

After the winding roll 1 has been unloaded, each solenoid valve 18, 18' is automatically or manually turned off.
and each piston rod 7, which is switched to the y side.
7' is made to protrude, and each support frame 4, 4' is returned to a horizontal position.

Note that the take-up roll unloading device of the present invention is not limited to the above-mentioned embodiment, and various modifications may be made without departing from the gist of the present invention, such as changing the descending speed during unloading. Of course, you can add more.

[Effects of the invention] As described above, according to the take-up roll unloading device of the present invention, the support frame pair can be tilted stably, and the take-up roll can be unloaded safely and reliably. Moreover, since only the support frame pair supporting the take-up roll is tilted, various excellent effects can be achieved, such as a significant reduction in power energy compared to the conventional full-width lift.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of one embodiment of the apparatus of the present invention, FIG. 2 is a control circuit of the apparatus shown in FIG. 1, and FIG. 3 is a diagram showing an example of a conventional unloading apparatus. 1 is a take-up roll, 2 is an unloading device, 4, 4' is a support frame, 6, 6' is a fluid pressure cylinder, 9,
9' is a gear, 10 and 10' are angle detectors, 14 is a winding diameter detector, 16 is a support frame inclination angle calculator, 17 is a comparison calculation controller, and 18, 18' are solenoid valves.

Claims (1)

[Scope of utility model registration request] At least one pair of support frames are each disposed on at least one side of the winding drum so as to be tiltable with the winding side as a support point, and a tilting hydraulic cylinder is connected to each of the support frames. a winding device which is tiltable, a roll support is movably provided on each of the support frames, a rotation angle detector is provided on each of the support frames, and a roll diameter of the take-up roll is detected on one of the support frames. a support frame inclination angle calculator that includes a diameter detector and calculates the inclination angle of each support frame based on a winding diameter detection signal from the winding diameter detector; a comparison operation for controlling the supply of pressure fluid to each of the tilting fluid pressure cylinders so as to compare the angle signal and the detected angle signal from each of the rotation angle detectors and tilt each of the support frames until both signals become equal; A take-up roll unloading device characterized by comprising a controller.