JP4290845B2 - Roll position recognition device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a roll position recognition device, and more particularly to a device for simply recognizing the center position of rolls stacked on a pallet.
[0002]
[Prior art]
For example, in a printing factory or the like, an overhead traveling transfer machine is used to supply a roll to a production machine such as a printing machine or a laminator.
This transfer machine is provided with a roll gripping device that can be moved up and down to open and close the tongue and insert a tongue claw provided at the end of the tongue into the roll core tube to grip the roll.
[0003]
The roll gripping device is equipped with a roll gripping position detector such as a photoelectric sensor. However, since the detection range of the roll gripping position detector is narrow, if the roll gripping device is not lowered almost directly above the roll, the roll gripping position detector Could not be detected.
[0004]
For this reason, the position where the roll is placed in advance is detected, and this position information is taught to the transfer machine, thereby controlling the roll gripping device and lowering the roll gripping device to an approximate positional relationship. A roll position recognition device is used.
[0005]
[Problems to be solved by the invention]
A conventional roll position recognition apparatus employs an image recognition method in which a roll is photographed with a CCD camera and image processing is performed. In this method, more accurate recognition is possible, but the apparatus is extremely expensive.
The present invention has been made in view of the drawbacks of the conventional type, and has an object to obtain a simple roll-recognizing roll recognition apparatus.
[0006]
[Means for Solving the Problems]
According to the present invention, a pallet platform with a turning function is provided at a predetermined position where a pallet loaded with rolls is loaded, a rail is provided above the pallet table, and a slider capable of measuring a moving distance from a reference position is slid on the rail. A slider that is mounted movably and has a laser device that emits a visible light laser line attached to the slider, and an arithmetic unit that inputs a moving distance of the slider, a roll diameter, and a roll stacking pattern. The center position of each stacked roll is geometrically determined from the moving distance of the roll, the diameter of the roll, and the stacking pattern of the rolls.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an outline of the present invention, and FIG. 2 is a plan view of rolls stacked.
Reference numeral 1 denotes a pallet stand, which is installed under the floor and has a turning function. The pallet placing table 1 may be a floor placing type.
[0008]
2 is a pallet, and rolls A, B, C, D, E, F, and G are stacked on the pallet 2. Reference numeral 2 ′ denotes a roll stopper provided at the end of the pallet 2.
3 is a rail provided above the pallet table 1 and is provided at a higher position than the transfer machine, for example, so as not to hinder the lifting and lowering of the roll gripping device of the transfer machine (not shown). Yes.
[0009]
A slider 4 is slidably mounted on the rail 3 and is slidably driven by an electric or screw screw method.
Further, a distance measuring device such as an encoder is attached to the slider 4, and the moving distance from the reference point X is measured.
[0010]
Reference numeral 5 denotes a laser device that emits visible light attached to the lower surface of the slider 4 on a surface perpendicular to the rail 3 so as to be capable of rotational scanning. Since the laser device 5 is attached to the slider 4, the moving distance of the slider 4 from the reference point X is a position from the reference point X of the laser device 5.
Reference numeral 6 denotes a visible light laser line.
[0011]
7 is an arithmetic unit installed in the control room, which receives the roll diameter, roll stacking pattern (number, 1-stage product, 2-stage product, etc.) and laser position measurement values, and calculates these. The center positions of the rolls A, B, C,.
The position information recognized by the arithmetic device 7 is taught from the arithmetic device 7 to the transfer machine.
[0012]
The configuration of the present invention is as described above. Next, the operation will be described.
First, the pallet 2 loaded with rolls is placed on the pallet table 1.
Then, the slider 4 is run while the laser line 6 is emitted, and the laser line 6 is aligned with the front end of the roll D stacked on the pallet 2. At this time, the pallet table 1 is operated to adjust the roll D so as to be parallel to the rotational scanning plane of the laser line 6.
[0013]
In this state, the roll stacking pattern, the roll diameter and the laser position measurement value read by the distance measuring instrument are input to the arithmetic unit 7, and the arithmetic unit 7 calculates these input values to calculate the center position of the roll D. And the center position of other rolls is geometrically determined with reference to the roll D, and the center position information of each roll is input to the control unit on the transfer machine side.
[0014]
The transfer machine is controlled based on the input center position information of the roll, and the roll gripping device is lowered almost directly above each roll to grip the roll, and the rolls are sequentially transferred.
[0015]
Note that the laser line 6 is closely aligned with the front end of the roll D, and it takes an extra time and makes it difficult to read visible light. Therefore, a slight gap is provided between the front end of the roll D and the front end of the roll D. The laser line 6 may be applied to the top surface of the pallet table 1 for viewing. In this case, the gap is defined as a constant offset value and reflected in the calculation.
[0016]
Further, even when rolls are stacked on the pallet 2, gaps are generated between the rolls depending on the roll diameter, but such gap dimensions can be assumed in advance and the gap dimensions can be reflected in the calculation.
[0017]
【The invention's effect】
The present invention is a roll position recognition device, a pallet stand with a turning function provided at a predetermined position for carrying a pallet on which rolls are stacked, a slider capable of measuring a moving distance from a reference position, and a slider. An attached laser emitting device that emits a visible laser line, a moving distance of the slider, a diameter of the roll, and an arithmetic device that inputs a roll stacking pattern;
[0018]
Since the computing device geometrically calculated the center position of each roll loaded from the slider movement distance, roll diameter, and roll stacking pattern, it was taught to the transfer machine. An extremely simple and inexpensive roll position recognition device could be obtained.
[Brief description of the drawings]
FIG. 1 is a front view showing an outline of the present invention.
FIG. 2 is a plan view of rolls stacked.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pallet stand 2 Pallet 3 Rail 4 Slider 5 Laser apparatus 6 Laser line 7 Arithmetic apparatus A, B, C, D, E, F, G Roll

Claims (3)

A pallet stand with a swivel function is installed at a predetermined position for loading pallets loaded with rolls, and a rail is provided above the pallet stand, and a slider that can measure the movement distance from the reference position is slidably mounted on the rail. A laser device that emits a laser line of visible light is attached to the slider, and an arithmetic unit that inputs a moving distance of the slider, a roll diameter, and a roll stacking pattern is provided, and a laser is provided at the front end of the roll. Roll position recognition, characterized by matching the lines and geometrically determining the center position of each stacked roll from the moving distance of the slider at that position, roll diameter, and roll stacking pattern apparatus. 2. The roll position recognition apparatus according to claim 1, wherein a gap is provided at the front end of the roll so that the laser line is aligned, and the dimension of the gap is reflected in the calculation as an offset value. The roll position recognition apparatus according to claim 1, wherein a gap dimension between the rolls is assumed in advance, and the gap dimension is reflected in the calculation.

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