JPH05307635A - Bar code reader - Google Patents

Abstract

PURPOSE:To attain unmanned conveyer carrying. CONSTITUTION:This bar code reading device is provided with a conveyer 1 for carrying a carried object 3 with a bar code and a bar code reader 7 arranged in the vicinity of the conveyer 1 to scan the bar code stuck to the object 3 so as to cross it from its oblique direction and a lifting device 10 capable of transferring the object 3 to a position separated from the conveyer 1 in the bar code reading state of the reader 7 is installed these. Since the bar code scanning position of the reader 7 can be shifted due to the lifting of the object 3, a reading point can be automatically changed even if a reading error is generated due to a defect or the like on a part of the bar code.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar code reading device used when a bar code reader reads a bar code of an object to be conveyed.

[0002]

2. Description of the Related Art Conventionally, this type of bar code reader is
A conveyor equipped with a conveyor for carrying an object to be conveyed with a barcode and a barcode reader provided near the conveyor for scanning the barcode is adopted.

In the bar code reading apparatus thus constructed, the bar code of the transported object is read by scanning the bar code across the bar code.

[0004]

By the way, in the conventional bar code reading apparatus, since the bar code reader scans the same bar code reading point, a read error occurs due to a defect of a part of the bar code. Then, there is a problem in that it is necessary to manually change the reading point, and it is impossible to realize unmanned conveyor transportation.

The present invention has been made in view of the above circumstances, and provides a bar code reading apparatus capable of automatically changing a reading point and thus realizing unmanned conveyor conveyance. Is.

[0006]

SUMMARY OF THE INVENTION A bar code reading apparatus according to the present invention comprises a conveyor for carrying an object to be conveyed with a bar code, and a bar code which is provided in the vicinity of the conveyor and diagonally crosses the bar code of the object to be conveyed. A bar code reader for scanning as described above is provided, and an elevating device capable of transferring an object to be conveyed is attached to a position separated from the conveyor in a bar code reading state by the bar code reader.

[0007]

According to the present invention, the bar code scanning position of the bar code reader can be displaced by raising and lowering the transported object.

[0008]

Embodiments of the present invention will be described in detail below with reference to embodiments shown in the drawings.

1A and 1B are a front view and a side view showing a bar code reading device according to the present invention, and FIG. 2 is a perspective view showing the bar code reading device according to the present invention.

In FIG. 1, reference numeral 1 is a conveyer for conveying the objects to be conveyed 3, 3 with a label 2 with a bar code 2a attached at a predetermined position thereof, each of which is predetermined in the left-right direction. Two rails 4 side by side with a space of
5 is installed on the base 6. The transported object 3 is a pallet 3 that moves on the rails 4 and 5.
a and an inspection object 3b placed on the pallet 3a.

A bar code reader 7 scans the bar code 2a so as to traverse the bar code 2a obliquely.
Is provided in the vicinity of.

Two guide cylinders 8 and 9 are arranged in parallel with each other at a predetermined interval in the front-rear direction, and are arranged between the rails 4 and 5 and fixed on the base 6.

Reference numeral 10 denotes an elevating device having a pressing rod 10a which moves back and forth in the vertical direction, which is arranged between the guide tubes 8 and 9.
In addition, it is fixed on the base 6 and is configured to be able to transfer the transported object 3 to a position apart from both rails 4 and 5 of the conveyor 1 in a bar code reading state by the bar code reader 7. ing. An elevating table 13 having guide rods 11 and 12 which are inserted into the guide tubes 8 and 9 so as to be able to move forward and backward, and on which a pallet 3a of the object to be conveyed 3 can be placed, is provided on a pressing rod 10a of the elevating device 10. It is installed.

Reference numerals A and B in the drawing indicate the carrying direction of the object 3 and the scanning direction of the bar code reader 7.

In the bar code reading device thus constructed, the bar code scanning position of the bar code reader 7 can be shifted by moving up and down the pallet 3a of the transported object 3.

Therefore, in this embodiment, the reading point can be automatically changed even if a reading error occurs due to a defect in a part of the bar code.

Further, in this embodiment, the fact that the reading point can be changed allows the data to be confirmed by a plurality of scannings of the bar code reader 7.

Next, the scanning method according to this embodiment will be described with reference to FIG.

(1) First, as shown by the solid line in the figure, the elevating device 10 raises the pallet 3a to a position away from the conveyor 1, and the bar code reader 7 scans the bar code 2a at this position a.

(2) Next, the pallet 3a is lifted from the position a by the elevating device 10 as shown by the chain double-dashed line in the figure, and the bar code reader 7 scans the bar code 2a at this position b. In the case of this (2), the scanning position of the bar code reader 7 is displaced by the distance W in the horizontal direction perpendicular to the transport direction as compared with the scanning position in the case of (1).

In this way, the bar code 2a of the object 3 to be conveyed can be scanned during conveyance.

Here, it is possible to improve the reading accuracy of the bar code 2a by comparing the data by scanning N times by changing the reading point.

In this embodiment, the pallet 3a
Although the example in which the bar code 2a is displayed on the transported object 3 by attaching the label 2 to the article has been shown, the present invention is not limited to this, and the bar code 2 is displayed on the pallet 3a.
Of course, only a may be directly displayed, or the bar code 2a may be displayed on the inspection object 3b.

Further, in the present embodiment, when the barcode 2a is scanned by the barcode reader 7, (1),
In the case of (2), an example of raising the pallet 3a has been shown, but the present invention is not limited to this, and in the case of (2) the pallet 3a is separated from the conveyor 1 and differs from the pallet position in the case of (1). At the pallet position, even if the pallet 3a is lowered, the same effect as that of the embodiment is obtained.

In addition, the present invention is not limited to the above-described embodiments, but various effective modifications and changes can be made based on the technical idea of the present invention.

[0026]

As described above, according to the present invention, a conveyor for carrying an object to be conveyed with a bar code and a bar code for an object to be conveyed, which is provided in the vicinity of the conveyor, are scanned so as to traverse obliquely. Equipped with a barcode reader to
Since the lifting device capable of transferring the transported object is provided at a position away from the conveyor in the state of reading the barcode by the barcode reader, the barcode scanning position of the barcode reader can be shifted by the lifting of the transported object.

Therefore, even if a reading error occurs due to a defect of a part of the bar code, the reading point can be automatically changed, so that it is possible to realize the unmanned conveyor conveyance.

Further, since the reading point can be changed, the data can be confirmed by a plurality of scannings of the bar code reader, so that the reliability in reading the data can be improved.

[Brief description of drawings]

1A and 1B are a front view and a side view showing a barcode reading device according to the present invention.

FIG. 2 is a perspective view showing a bar code reader according to the present invention.

FIG. 3 is a perspective view shown for explaining a scanning method by the barcode reading device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Conveyor 2 ... Label 2a ... Bar code 3 ... Conveyed object 3a ... Pallet 3b ... Inspected object 7 ... Bar code reader 10 ... Lifting device

Claims (2)

[Claims] 1. A bar code reader for transporting an object to be conveyed with a bar code, and a bar code reader provided in the vicinity of the conveyor for scanning the bar code of the object to be conveyed so as to cross the bar code from an oblique direction. A bar code reader, wherein an elevating device capable of transferring the transported object is attached to a position separated from the conveyor in a bar code reading state by a code reader. 2. The bar code reading device according to claim 1, wherein the number of times of lifting and lowering of the transported object is set to a plurality of times.