JP3127567B2 - Barcode reader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar code reader used for reading a bar code of a conveyed object with a bar code reader.

[0002]

2. Description of the Related Art Conventionally, this type of bar code reader has been
2. Description of the Related Art A conveyor having a barcode-conveyed object and a barcode reader provided near the conveyor and scanning a barcode is employed.

[0003] In the bar code reading apparatus thus configured, the bar code of the conveyed object is read by scanning the bar code across the bar code by a bar code reader.

[0004]

In a conventional bar code reader, the same reading point of a bar code is scanned by a bar code reader, so that a reading error occurs due to a defect in a part of the bar code. Then, there is a problem that an operation of manually changing the reading point is required, and it is not possible to realize unmanned conveyor conveyance.

The present invention has been made in view of such circumstances, and provides a bar code reader capable of automatically changing a reading point and thereby realizing unmanned conveyor conveyance. It is.

[0006]

According to the present invention, there is provided a bar code reading apparatus comprising: a conveyer for conveying a conveyed object having a bar code; and a bar code provided near the conveyer and crossing the bar code of the conveyed object from an oblique direction. A bar code reader that scans the object as described above, and a lifting device capable of transferring the conveyed object is provided at a position separated from the conveyor when the bar code is read by the bar code reader.

[0007]

According to the present invention, the barcode scanning position of the barcode reader can be shifted by raising and lowering the transported object.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below in detail with reference to the embodiments shown in the drawings.

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

In FIG. 1, reference numeral 1 denotes a conveyor for transporting articles 3, 3,..., To which labels 2 with bar codes 2a are affixed at predetermined positions, each of which is a predetermined conveyor in a horizontal direction. Two rails 4, which are arranged side by side with an interval of 4,
5 and is installed on a base 6. The transferred 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.

Reference numeral 7 denotes a bar code reader which scans the bar code 2a so as to cross it obliquely.
Is provided in the vicinity of.

Reference numerals 8 and 9 denote two guide tubes arranged in parallel in the front-rear direction at a predetermined interval, disposed 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 up and down in the vertical direction, and is disposed between the guide cylinders 8 and 9;
Further, the conveyed object 3 is fixed on the base 6 and can be transferred to a position separated from both rails 4 and 5 of the conveyor 1 in a bar code reading state by the bar code reader 7. ing. The pressing bar 10a of the lifting device 10 includes a lifting table 13 having guide rods 11 and 12 that are respectively inserted into the two guide cylinders 8 and 9 so as to be able to move forward and backward, and on which the pallet 3a of the transferred object 3 can be placed. Installed.

Reference numerals A and B in the figure indicate the direction in which the object 3 is conveyed and the direction in which the bar code reader 7 scans.

In the bar code reading apparatus thus constructed, the bar code scanning position of the bar code reader 7 can be shifted by raising and lowering the pallet 3a of the article 3 to be transported.

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

In this embodiment, the fact that the reading point can be changed means that the data can be confirmed by a plurality of scans of the bar code reader 7.

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

(1) First, as shown by a solid line in FIG. 1, the pallet 3a is raised to a position where the pallet 3a is separated from the conveyor 1, and the barcode reader 7 scans the barcode 2a at this position a.

(2) Next, as shown by a two-dot chain line in FIG. 1, the pallet 3a is raised from the position a by the lifting device 10, and the barcode reader 7 scans the barcode 2a at this position b. In the case of (2), the scanning position of the barcode reader 7 is shifted by a distance W in the horizontal direction perpendicular to the transport direction as compared with the scanning position in the case of (1).

In this manner, the bar code 2a of the transferred object 3 during the transfer can be scanned.

Here, the data can be compared by N scans by changing the reading point, and the reading accuracy of the barcode 2a can be improved.

In this embodiment, the pallet 3a
Although the bar code 2a is displayed on the transported object 3 by attaching the label 2 to the pallet 3a, the present invention is not limited to this.
The bar code 2a may be displayed on the inspection object 3b without any problem.

In this embodiment, when the barcode reader 7 scans the barcode 2a, (1),
In the case of (2), an example in which the pallet 3a is raised has been described, 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 is different from the pallet position in the case of (1). If the pallet 3a is lowered at the pallet position, the same effect as that of the embodiment can be obtained.

In addition, in the present invention, various effective modifications and changes can be made based on the technical idea of the present invention without being limited to the above-described embodiment.

[0026]

As described above, according to the present invention, a conveyer for conveying a conveyed object with a bar code, and a bar code of the conveyed object provided near the conveyer is scanned so as to cross the bar code from an oblique direction. With a barcode reader
In the bar code reading state by the bar code reader, a lifting device capable of transferring the transported object is provided at a position away from the conveyor, so that the bar code scanning position of the bar code reader can be shifted by lifting and lowering the transported object.

Therefore, even if a reading error occurs due to a defect or the like of a part of the bar code, the reading point can be automatically changed, so that unmanned conveyor conveyance can be realized.

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

[Brief description of the drawings]

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

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

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Conveyer 2 ... Label 2a ... Bar code 3 ... Conveyed object 3a ... Pallet 3b ... Inspection object 7 ... Bar code reader 10 ... Elevating device

Claims (2)

(57) [Claims] 1. A conveyer for conveying an object to be conveyed with a bar code, and a bar code reader provided near the conveyor and scanning the bar code of the object to be traversed from an oblique direction. A bar code reading device, further comprising an elevating device capable of transferring the object to be transported at a position separated from the conveyor in a bar code reading state by a code reader. 2. The bar code reader according to claim 1, wherein the number of times of moving the conveyed object is set to a plurality of times.