JPH0629756B2 - Automatic weighing machine - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an automatic weighing and pricing machine.

Technical background of the invention and its problems In recent years, along with the development of the distribution industry, there is a growing demand for an automatic weighing and pricing system, that is, a system for packaging and packing goods to perform weighing and pricing. Is required to improve.

Generally, in an automatic weighing and pricing machine, the goods carried in from the packaging machine are weighed by the weighing section on the weighing conveyor, and after weighing, the articles are sent by the weighing arm from this weighing conveyor to the side conveyor, and then on the pasting conveyor. The label is attached to the product on this attachment conveyor. That is, the goods are transported from the automatic packaging machine and weighed (label issuance) → sent out on the conveyor by the weighing arm →
In the series of cycles of transfer from the transfer conveyor to the sticking conveyor → label sticking on the sticking conveyor by the sticking arm → discharging by the discharge arm, the transfer path has the sticking accuracy (position)
It will be sent along the guide provided on the route. Here, according to the conventional method, the conveyor is arranged so that the product advances diagonally toward the guide direction from a line parallel to the guide, but it is possible to increase the angle of inclination. There is a limit when considering the smooth flow of goods, and the goods cannot be moved to a sufficient position. Also, as another method,
There is also one in which the conveyors are arranged diagonally, and when the goods are conveyed on the measuring conveyor, the measuring conveyor conveys the goods as close to the guide as possible and weighs the goods. However, according to this method, the position of the item is considerably displaced from the center position of the weighing conveyor, and accurate measurement cannot be performed due to variations in the accuracy of the scale and the difficulty in stabilizing the item.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to obtain an automatic weighing and pricing machine that can accurately measure an item and that has good pasting accuracy on a pasting conveyor. And

SUMMARY OF THE INVENTION The present invention enables accurate weighing by stopping the carried-in item at the weighing position at the center of the weighing conveyor to perform accurate weighing, and after weighing, the items are moved to the conveyance guide on the weighing conveyor. After that, by sending it to the side by the measuring arm, the position on the sticking conveyor becomes accurate along the transport guide, and the accuracy of sticking the label is improved.

Embodiments of the Invention One embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 schematically shows the external appearance, and basically, the automatic packaging machine 1 and the automatic weighing and pricing machine 2 are integrated. As a result, first, the product set on the packaging conveyor 3 by the automatic packaging machine 1 is conveyed in the packaging machine, and the packaging film cut to a predetermined length is sent onto the product on the way to the film. The goods are lifted and the packaging is packed. Then, according to the packaging conveyor 3, the automatic weighing and pricing machine 2 is moved to. First, a weighing conveyor 4 is arranged in front of the packaging conveyor 3, and the weighing conveyor 4
The items transferred above are weighed. When the weighing is finished, the weighing arm 5 pushes the article laterally, and the article is transferred onto the conveyor 6. The conveyor 6 conveys the goods along the conveyor guide 7 onto the sticking conveyor 8. The label issued by the label printer 9 is attached to the item sent onto the attaching conveyor 8 by the operation of the attaching arm 10. Then, the article is delivered by the ejection arm 11 and ejected to the front side by the ejection rollers 12 and 13. In FIG. 2, the thick arrow indicates the convey direction of the conveyor,
The thin arrows show the flow of goods.

Reference numeral 14 is an operation section of the automatic packaging machine 1, and 15 is an operation section of the automatic weighing and pricing machine 2. The structure of the operation unit 15 is shown in FIG. 3, namely, the display unit 16 for weight, unit price, price, and product number, the numeric keypad 0 to 1 and the erase key 18,
In addition to the execution key 19 and various keys 20 such as the product number, key switches 21 and 22, a driving switch 23 for operating / stopping, a package weighing value attaching mode / a weighing value attaching mode / a packaging switching operation switching switch 24, a power source switch 25. Is provided. Further, various keys such as the sheet key 26 are provided. 28 is an LED for displaying an error or the like.

These systems are controlled by a system controller as shown in FIG. First, CPU3
0 to ROM / ROM 32, RA via latch 31
M33 is connected and selected by the memory selector 34. On the other hand, the CPU 30 has I / O ports 35, 36, 3
7 are selectively connected by the I / O selector 38, and I / O
A scale / printer 40 is connected to the O port 35 via a photo coupler 39, and the automatic packaging machine 1 is connected to the I / O port 37 via a photo coupler 41. 42 is a bus transiever. An interrupt controller 44 is connected to the CPU 30 via a bus transceiver 4343. Outputs of the timer 145, the timer 246, etc. are input to the interrupt controller 44. Then, AC motor control circuits 48, 49 are connected to the AC motor 47 for the conveyors 4, 6, 8, etc. Further, the pulse motor 50 for the sticking arm 10
A pulse motor control circuit 51 is connected to. An electromagnetic valve drive circuit 53 is connected to the electromagnetic valve 52. Furthermore, a plurality of photosensors 54, which are a combination of LEDs and phototransistors, are provided at the entrances of various conveyors and the like. That is, it operates under the LED drive circuit 55, the photoelectric detection circuit 56 is connected to the output side, and the I / O port 3 is connected via the data selector 57.
It has been entered in 6. Further, a part of it is input to the interrupt controller 44. Further, inputs of various switches 57 and display switches 59 are also given to the data selector 57.

In such a configuration, each mode process is performed by the flow chart of FIG. In any of the modes, when the product is conveyed from the automatic packaging machine 1, the product is stopped by the measuring means at the central position of the measuring conveyor 4 (the solid line position in FIG. 2) and the weighing is performed. After that, the weighing conveyor 4 is operated for 100 ms by the width-shifting means to shift the width to the guide 7 side as shown by the alternate long and short dash line in FIG. The goods are discharged onto the conveyor 6, and the conveyor conveys the goods to the pasting position by driving the conveyor 6 by the conveying means. At this position, the goods are labeled. In FIG. 5, 500 ms indicates a dummy loop. Further, the processing of label issuing end and sticking operation in the weighing value attaching mode and the packaging weighing value attaching mode is performed in parallel by the interrupt processing.

As described above, according to the present embodiment, since the weighing of the goods is performed at the weighing position in the center of the weighing conveyor 44, accurate weighing can be performed without variation. Then, after weighing, the product is once moved to the conveyance guide 7 and then sent out by the weighing arm 5, so that the product is surely attached along the conveyance guide 7 without tilting the conveyor 6 to the left. It can be conveyed up to the conveyor 8.
Therefore, the position of the article on the pasting conveyor 8 becomes accurate, and the accuracy of sticking the label to the article is improved.

EFFECTS OF THE INVENTION Since the present invention is configured as described above, accurate weighing,
It is possible to carry an article that can ensure highly accurate labeling.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is an external perspective view, FIG. 2 is a schematic plan view, and FIG. 3 is a front view of an operating portion.
FIG. 4 is a block diagram, and FIG. 5 is a flow chart.

Front Page Continuation (72) Inventor Shigeharu Koike 6-78 Minamimachi, Mishima City, Shizuoka Prefecture Mishima Plant (72) Inventor Kuniichi Sekioka 6-78 Minamimachi, Mishima City, Shizuoka Tokyo Electric Co., Ltd. Mishima In the factory (56) References Open 54-161168 (JP, U) Open 56-121023 (JP, U) Open 57-84434 (JP, U)

Claims (1)

[Claims] 1. A product carried in from a packaging machine is weighed by its weighing section on a weighing conveyor, and after weighing, the product is sent by a weighing arm from this weighing conveyor to a side transportation conveyor and transported on a pasting conveyor, In the automatic weighing and pricing machine that attaches labels to items on this attaching conveyor,
Weighing means for stopping the items carried on the weighing conveyor at the weighing position in the center of the weighing conveyor and performing weighing.
After weighing, the width-shifting means for driving the weighing conveyor so as to bring the article into contact with the transport guide provided from the weighing conveyor to the transport conveyor, and the article that has been width-shifted by the weighing arm on the transport conveyor. An automatic weighing and pricing machine characterized in that it is provided with a sending means for sending out, a transport means for driving the transport conveyor and the sticking conveyor to carry the product to a label sticking position.