JP2610762B2 - Identification display reading device for cylindrical workpiece - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the transfer of a cylindrical work, such as a bar code label or the like, provided on the outer peripheral surface of a cylindrical work, such as a coil, which is a hot rolled or cold rolled thin plate product. The present invention relates to a method and an apparatus for reading on the way.

[0002]

2. Description of the Related Art Conventionally, an identification such as a bar code label is provided on the outer surface of a product itself or a work such as a box packed and packed in a box, and the identification is read during manufacturing or before shipment in a final process. A method of confirming and recognizing an actual product and inputting the result to a higher-level computer is widely used in the field of physical distribution management.

In this method, a reading device for reading an identification display is fixed, and when a work is moved and conveyed by the side of the reading device, the identification display provided on the work is read or the work being transported is read. Is stopped at a fixed position, and the reading device is moved at this position to read the identification of the work, and the reading operation is performed in the middle of a transport path formed by a roller conveyor, a belt conveyor, or the like. It has become.

[0004] A cylindrical work such as a coil, which is a hot-rolled or cold-rolled thin plate product, is manufactured in a factory and is sorted from a transport path in the factory in a state where identification is given on an outer peripheral surface thereof. It is carried out to a warehouse outside the factory, but when a large amount of cylindrical work is carried in from a factory, such as a Hamade warehouse, the transfer of the cylindrical work from this factory to the warehouse is efficiently and safely achieved. To this end, a dedicated transport path is provided between the factory and the warehouse so that cylindrical works manufactured at the factory are directly carried into the warehouse.

[0005] In this case, the factory and the warehouse are separate buildings, and a traffic route is generally formed between them. Therefore, a dedicated transport route is elevated or underground so as not to obstruct the traffic route. Therefore, a vertical transfer path is provided between the transfer path in the factory and the dedicated transfer path.

The transport path formed between the factory and the warehouse and composed of a horizontal path portion and a vertical path portion is a dedicated path for carrying out the cylindrical work from the factory to the warehouse. If the cylindrical work delivered to the factory is wrong, it will be extremely difficult to correct it.For this reason, the quality of the cylindrical work delivered from the factory to the warehouse by this dedicated transport path is accurate and reliable. It needs to be judged.

[0007] It is most effective and accurate to judge the quality of a cylindrical work carried out from a factory to a warehouse by a dedicated transport path by reading an identification display provided on the cylindrical work.

[0008]

However, when the above-described prior art of reading the identification display is applied to a cylindrical work such as a coil which is a hot-rolled or cold-rolled thin plate product, the width of the cylindrical work is reduced. In addition, since there are various types of outer diameters, there is a problem that even if a reader which is a commonly used reader is brought, it cannot be easily applied in terms of functionality.

That is, since the reader has a reading range as a matter of course, it is necessary to position the identification mark provided on the outer peripheral surface of the cylindrical work within the reading range of the reader. The identification mark provided on the outer peripheral surface of the cylindrical work indicates that the height position and the position in the width direction of the transport path change according to the change of the outer diameter of the cylindrical work. Positioning must be performed following changes, which complicates the mounting mechanism of the reader and requires accurate tracking positioning control. It is easy to cause an accident that collides with and breaks.

For example, Japanese Patent Laying-Open No. 60-257283 discloses a marking device for automatically marking an identification mark on the outer surface of a cylindrical work which is a rolled product coil. At present, there is no method for automatically reading the identification display provided on the outer peripheral surface of the workpiece.

[0011] Further, a cylindrical workpiece manufactured in a factory is
According to the identification, it is sorted and arranged on the transport path in the factory.
It stops sorting on the transport path in the factory, and checks the quality of the cylindrical work carried out from the factory to the warehouse by the dedicated transport path.
There was a problem in that it was not possible to make a determination on the warehouse side, and there was a risk that erroneous transport of the cylindrical workpiece from the factory to the warehouse would occur.

In view of the above, the present invention has been made in order to solve the above-mentioned problems in the prior art. It is a technical object of the present invention to read an identification display of a cylindrical work being transferred by an optical reader without contact. It is an object of the present invention to accurately and reliably determine the quality of a cylindrical work to be conveyed, and to enable accurate and smooth operation management of the cylindrical work thereafter.

[0013]

Means for Solving the Problems The means of the present invention <br/> order to solve the above technical problem, vertical to lifting device formed
It is provided at the starting point of the transfer path and has a bar code label on the outer peripheral surface.
Cylindrical end-down position
Light-shielded outer diameter detector that measures the outer diameter from the height of the workpiece
Having a light-shielding outer diameter detector along the vertical transport path
Identification of cylindrical workpieces that are located downstream of
Having a reader for optically reading the
Assemble and fix the detector and follow the measured value of the light-shielding outer diameter detector.
Therefore, the displacement along the reading direction of the
At the base end opposite the vertical transfer path
Having the mobile body pinned as possible .

[0014]

[0015]

[0016]

[0017]

The outer diameter measurement of the cylindrical work and the reading of the identification display are performed while the cylindrical work is positioned on the vertical transfer path. Irrespective of the change in the outer diameter of the workpiece, it is always constant, so that the mounting of the reader need not be displaceable in the width direction of the vertical transfer path at all.

On the other hand, the position of the identification display in the depth direction of the vertical transfer path, that is, the position along the reading direction of the reader changes according to the change in the outer diameter of the cylindrical work. The reader along the reading direction so that it is located within and so that it does not collide with the cylindrical workpiece being transferred.
Attached to a displaceable moving body, in the reading direction
It can be displaced along.

Therefore, first, in a state where the cylindrical work is positioned on the vertical transfer path, the outer diameter of the cylindrical work is blocked.
It was measured by a light type outer size detector, from the measurement result, the position along the depth direction in the vertical transfer path of identification, i.e., calculates the position along the reading direction of the reader.

According to the result of this calculation, the moving body reads
The position along the reading direction of the scanner is displaced to a position where the identification of the cylindrical work passing through the vertical transfer path is within the reading range and the reader does not collide with the cylindrical work passing through the vertical transfer path. adjust to.

The transfer of the cylindrical work along the vertical transfer path is performed after the position of the reader has been adjusted.
Therefore, when the cylindrical workpiece passes in front of the reader, will be identification passes the read range of reliably reader, and a cylindrical workpiece to pass read
Although it does not collide with the filter,
Malfunction, moving body malfunction, deformation of cylindrical work, etc.
And the reader collides with the cylindrical workpiece.
Even if it occurs, is it below the cylindrical workpiece reader?
The moving body is rotated upward by the contact of
The scanner with the cylindrical work of the reader.
Damage due to collision is prevented.

[0022]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall side view of an embodiment of a reading device 1 according to the present invention arranged along a vertical transport path formed by a lifting device 15 as an optical measuring means disposed at a starting point of the vertical transport path. Shade type outer diameter detector 2
A reader 3 as an optical reading means disposed downstream of the light-shielding outer diameter detector 2 along the vertical transfer path; and attaching and fixing the reader 3, the depth direction of the vertical transfer path, That is, the moving body 4 is provided so as to be displaceable along the reading direction of the reader 3.

The light-shielding type outer diameter detector 2 is composed of a light projecting body 2a and a light receiving body 2b opposed to each other with a vertical transfer path interposed therebetween. In the middle of the column 12 erected along the vertical transfer path, it is arranged so as to irradiate the detection light horizontally toward the vertical transfer path, whereas the photoreceptor 2b is located across the vertical transfer path. On the opposite side of the support 12, a support pillar 13 erected along the vertical transfer path is arranged in a posture for receiving light from the light projecting body 2 a.

The reader 3 is the same as a conventional bar code reader, and is mounted on the upper end of a column 12 via a moving body 4 so that its reading direction coincides with the depth direction of the vertical transfer path. .

The moving body 4 (see FIG. 2) having the reader 3 attached and fixed to the top end of the upper surface slides along the reading direction on the upper surface of the elongated box-shaped frame 7 fixed to the upper end of the column 12. Assembled as possible. The moving body 4 is attached to the frame 7 by attaching a nut portion 5a, which is a lower end portion, to a ball screw 8 that is rotatably attached to the frame 7 by bearings 9 and 9 so that the axis of the moving member 4 is aligned with the reading direction. At the upper end protruding above the upper surface of the frame 7 of the screwed moving support 5,
This is achieved by pinning the rear end of the moving body 4 with the shaft pin 6.

Since the shaft pin 6 has a horizontal posture along the width direction of the vertical transfer path, the moving body 4
Is rotated along the vertical direction with the rotation axis as a rotation axis, and by rotating from the horizontal posture to the upright posture direction, the distal end to which the reader 3 is attached is displaced in a direction to retract from the vertical transfer path.

A motor brake 10 is mounted on the rear end surface of the frame 7, that is, on the end surface opposite to the vertical transfer path, and the output shaft of the motor brake 10 is connected to the ball screw 8 via a coupling 11. The ball screw 8 is rotated by the driving of the motor brake 10 to move the moving body 4 forward and backward together with the reader 3.

As shown in FIG. 4, the identification mark T for the cylindrical work K such as a rolled product coil is formed by attaching a bar code printed label to the center of the cylindrical work K in the width direction at the horizontal position on the outer peripheral surface. It is achieved by means such as wearing.

By the way, the reading range W of the reader 3
As shown in FIG. 3, the lower limit of the reading range width H (particularly, the range width in the width direction shown in FIG. 4) is determined by the width of the identification mark T and the position of the identification mark T with respect to the outer peripheral surface of the cylindrical work K. Since it is determined in accordance with the output accuracy, the range width L is determined by setting the range width L so that the range width H does not become equal to or less than the determined value. Is performed under the condition that it passes through the reading range W as a limit condition.

In measuring the outer diameter of the cylindrical work K, the cylindrical work K to be unloaded through the vertical transfer path is mounted and conveyed on the conveyor 14 forming the unloading path of the factory, and the vertical work formed by the lifting device 15 is performed. This is performed when the vehicle stops at the starting point of the transfer path.

That is, in the case of the illustrated embodiment, the light-shielding type outer diameter detector 2 is composed of a pair of a light projecting body 2a and a light receiving body 2b arranged at a set height position. The upper end portion of the cylindrical work K stopped at the starting point of the vertical transfer path in the mounted state is the light projecting body 2a and the light receiving body 2
The size of the outer diameter of the cylindrical work K is classified depending on whether or not light is shielded from the cylindrical work K.

In short, the light-shielding outer diameter detector 2 determines whether or not the height of the cylindrical work K in the down-end posture on the conveyor 14 stopped at the starting point of the vertical transfer path is larger than a predetermined value. Due to this, the outer diameter of the cylindrical work K to be transferred from the vertical transfer path by the lifting device 15 from now on,
It detects whether it is large or small.

Therefore, the moving body 4 moves forward and backward between the two positions according to the detection result of the light-shielding type outer diameter detector 2, and moves forward (transfers) when the outer diameter of the cylindrical work K is small. In the direction of approaching the cylindrical work K).
If the outside diameter of the workpiece is large, it retreats (in a direction away from the transferred cylindrical work K).

The reason why the reading position of the reader 3 is set at two positions is that the change range of the outer diameter of the cylindrical work K is smaller than the range distance L of the reading range W of the reader 3. However, when the outer diameter change range of the cylindrical work K is large, the outer diameter of the cylindrical work K is detected in several stages (if a plurality of combinations of the light projecting body 2a and the light receiving body 2b are provided, Good), and the stop position of the reader 3 may be set in several stages in response to this.

Note that the cylindrical work K being transferred on the vertical transfer path is moved from below to the movable body 4 due to the malfunction of the light-shielding type outer diameter detector 2, the malfunction of the movable body 4, and the deformation of the cylindrical work K. Even if a collision occurs, the moving body 4 is pushed up by the cylindrical work K due to contact with the cylindrical work K at the tip end thereof and rotates around the shaft pin 6 (FIG. 2).
(See the virtual line in FIG. 3), and the evacuation is performed.
There is no inconvenience such as the damage of the wire.

[0036]

Since the present invention has the above-described structure, the following effects can be obtained. The identification mark on the outer peripheral surface of the cylindrical work in the down-end posture is read during the vertical transfer of this cylindrical work, so the height position of the reader corresponding to the change in the outer diameter of the cylindrical work can be completely adjusted. This eliminates the need for this, which simplifies the operation and configuration of the position adjustment of the reader, thereby ensuring that the reading of the identification display by the reader is accurate and accurate, thereby making the reading of the identification display safe and unmanned. And it can be easily implemented.

The reading of the identification display of the cylindrical work is performed on the vertical transfer path which is the start portion of the branched dedicated transfer path such as the transfer path from the factory to the warehouse. It is possible to directly confirm the actual product of the cylindrical work, thereby reliably preventing erroneous transport of the cylindrical work to the branched transport path side, and using this read information to operate the cylindrical work on the branched transport path side. The management can be performed accurately, safely, efficiently, and automatically by using a computer or the like, so that the transfer of the cylindrical work and the operation management can be greatly saved.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment in which the present invention is arranged along a vertical transfer path.

FIG. 2 is a side view showing an embodiment of the optical reading means in the embodiment shown in FIG.

FIG. 3 is an explanatory diagram showing a positional relationship between a reading range of a reader and an identification display of a cylindrical workpiece during a reading operation.

FIG. 4 is an overall perspective view showing an embodiment of identification display on the outer peripheral surface of a cylindrical workpiece.

[Explanation of symbols]

Reference Signs List 1; reading device 2; light-shielding outer diameter detector 2a; light projecting body 2b; light receiving body 3; reader 4; moving body 5; moving support base 5a; nut 6; shaft pin 7; Bearing 10; Motor brake 11; Coupling 12; Support 13; Support pillar 14; Conveyor 15; Lifting device K; Cylindrical work T; Identification display W; Reading range L; Range distance H; Range width

Claims (1)

(57) [Claims] 1. A vertical transfer path formed by a lifting device (15).
Provided at the starting point, with a bar code label on the outer peripheral surface
Cylindrical workpiece with down end posture with identification (T)
Light-shielded outer diameter detector that measures the outer diameter from the height of (K)
(2) and along the vertical transfer path, the light-shielding outer diameter detection
The cylindrical workpiece disposed downstream of the vessel (2) and passing therethrough.
Reader (3) that reads the identification (T) of (K) optically
And the reader (3) is assembled and fixed.
According to the readings of the detector (2), the reading of said reader (3)
It is displaced along the cutting direction and is
Vertically pivotable pinned at opposite proximal end
Identification reading of cylindrical work consisting of moving body (4)
Device .