JP2630368B2 - Weighing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weighing device, and more particularly to a process that requires quantitative weighing, particularly when the weighing object is easily damaged, when it is difficult to change or drop the object,
It is suitable for the treatment of what could only be weighed by hand, such as those that easily adhered and those that wanted to be weighed while maintaining directionality.

[0002]

2. Description of the Related Art Heretofore, this type is as follows. That is, a conventional combination automatic weigher for quantitative measurement is a 10-20 unit for weighing multiple units in parallel in a radial or linear manner, and
It is composed of one assembly. Each unit is composed of a feeder for supplying an appropriate amount in order from the top, a supply hopper for feeding the weighing unit to the weighing unit at a time, and a weighing hopper mounted on the weigher. A memory hopper may be provided. Each hopper has a structure that the bottom can be opened and closed, and only the objects to be weighed are delivered by free fall sequentially from the top, the weight combination of the weighing hopper or the memory hopper is calculated, the selected hoppers are opened at the same time, and a conical collecting device is set up. They were dropped into a collecting section, collected at the center, dropped into a hopper or a conveyor, and the items to be weighed were handed to a packaging machine in a later process at an appropriate timing.

[0003]

The above-mentioned prior art has the following problems. 1. In conventional weighing machines, because the weighing machine is replaced by a free fall (it is highly accurate in terms of transporting and weighing only the weighing material), this is limited to slippery weighing objects. For those that are easy to adhere, each hopper,
A part of the weighed material remained in the collecting device, and an error occurred between the calculated value and the actually discharged material. 2. In addition, those that were easily damaged or broken could not be measured. 3. What is desired to align the orientation is also due to the head, and because the weighing unit is radially arranged on the circumference of the discharge hopper, it has to be separated on the way and needs to be aligned again at the exit.

[0004] 4. In the case of combination weighing, it is natural to increase the accuracy of each weighing scale in order to increase the accuracy, but it is necessary to increase the number of other combinations.
Since 20 units were used, variations in scale, maintenance, and cost were also problems. 5. All parts, such as the feeder hopper and the collecting device, are required for each station according to the number of stations on the scale.In the case of food, the contact parts of the object to be weighed are cleaned every day for hygiene, but many parts are used. Is difficult.

[0005] 6 . Conventionally, the flow of the object to be weighed is one-way from top to bottom, so once the object to be weighed enters the balance, for example, if it is overloaded in one place, it cannot participate in the combination,
At a certain timing, it must be removed from the discharge hopper as a weight-defective product before entering the packaging machine or after packaging, and human resources are required to reuse the removed material,
In addition, the raw materials are damaged and packaging materials are wasted. 7 . There are many moving parts such as a front-stage hopper on the upper side where the object to be weighed is moving, and there is a possibility that a part of the apparatus may be damaged, and there is a high risk of being mixed into the object to be weighed, which is mainly food.

The present application has been made in view of such problems of the prior art, and has as its object to provide the following. Feeding equipment such as a feeder or manually put into the container in order, move the container as it is , measure, store, temporarily stock , sequentially calculate the combination from among them, select the optimal combination of containers, pull out and turn over Can be discharged.

[0007]

Means for Solving the Problems In order to achieve the above object, the present invention is as follows. That is,
The first invention has a plurality of containers 10 and less than the number of containers.
The containers, each of which is provided in a number corresponding to the
And a weighing scale 9 for weighing
The second conveyor 3 to be assembled in a line and the scale
Store the weighed value for each container corresponding to the container
Of these stored values in order from the one stored earlier.
And participate as many as the number within the specified range.
A calculation unit 15 for calculating an appropriate combination, and a combination in the calculation unit
A predetermined number of containers selected according to the
A third moving means 13 for moving from the bear,
Attached to two conveyors and moved by the third moving means
A third conveyor for assembling the predetermined number of placed containers;
A, and the predetermined number of containers assembled are turned over,
Collecting devices 7 and 8 for discharging and collecting the objects to be weighed in the container
It is a weighing device provided .

[0008] A second invention provides a plurality of containers for storing objects to be weighed.
And a first conveyor 2 for placing and moving the plurality of containers
And a predetermined number of the containers are transferred from the first conveyor.
First moving means 11 for moving the first conveyor
The first conveyor corresponding to a predetermined number of containers to be moved.
And is mounted and moved by the first moving means.
Predetermined for weighing the container in which the object to be weighed is stored.
A number of scales 9 and the measured number of containers measured from the scales
A second moving means 12 for moving, and the scale
The plurality of moving and mounted by the second moving means.
Conveyor 3 for arranging the containers in a line and collecting
Along with the weighed value for each container weighed on the balance,
The plurality of containers moved and placed by the second moving means.
Conveyor 2 for collecting and arranging in a line,
Store the weighed value of each weighed container corresponding to the container
Of these stored values in order from the one stored earlier.
And participate as many as the number within the specified range.
A calculation unit 15 for calculating an appropriate combination, and a combination in the calculation unit
A predetermined number of containers selected according to the
A third moving means 13 for moving and mounting from a bear;
Attached to the conveyor and moved and loaded by the third moving means
A third container for moving and assembling the predetermined number of containers placed therein;
Bear 4 and the predetermined number of containers assembled into one set
An assembling device for overturning and discharging and collecting the objects in the container.
This is a weighing device provided with devices 7 and 8. In this case,
It can be configured as follows. A. The object to be weighed that has been fallen over and stored in the collecting device is discharged.
The completed container is moved and placed on the first conveyor again.
And the containers are the first conveyor, the second conveyor, the third conveyor.
And circulates to the first conveyor,
Injecting, weighing, selecting calculations, collecting, and discharging objects to be weighed
It is configured to repeat. B. Of the container selected by the combination result in the arithmetic unit
A predetermined number is for discharging the object to be weighed in the container.
Same as the number of containers that can be overturned in the collecting device
Or less.

[0009]

[Action] Empty containers 1 arranged on the first conveyor 2
Objects to be weighed are sequentially put into 0. 2. Containers accumulated stopped by the stopper 2A rides on scale alone 9A by the first moving means 11 as much time as the number of the scale alone 9A in weigher 9 stopper side, weighed, and sends the weight signal to the arithmetic unit 15 . 3. The container on the scale is transferred to the second conveyor 3 simultaneously with the operation 2 described above. 4. The second conveyor 3 always rotates in the direction opposite to that of the first conveyor 2, and the containers are pressed against the stoppers 3B so that 16 containers are sequentially arranged in one row. Arithmetic unit 1
In step 5, a combination of 1 to 4 containers among them, which is heavier than the set weight and which is closest to the set weight, is calculated, a selection signal is transmitted to the calculation unit 15, the selection cylinder is operated, and the selected container is stored in the third container. Extrude onto conveyor 4. Here, each of the left and right third conveyors 4A and 4B constituting the third conveyor 4 first moves the container to the center, and sends the container to the fourth conveyor 5 which is operated intermittently by the fourth moving means 14, and further the fifth conveyor. 6
Sent to

[0010] 5. On the fifth conveyor 6, the containers are lifted from the fifth conveyor by the collecting device 7 and fall down to the near side, and only the objects to be weighed are transferred to the collecting device 8. In other words, set instrumentation
The device 7 is configured to rotate by 90 ° or more with the point D as a fulcrum, but FIG. For those that are easily damaged, slowly rotate to about 120 ° and discharge the contents so that they slide, while for those that are easy to adhere rotate about 150 to 180 ° and stop suddenly at the end to separate the contents from the container. And discharge. 6. The container returns to the fifth conveyor 6 again, and the first conveyor 2
Will be moved to 7. Containers into which the objects to be weighed have been leaked when arranged on the first conveyor 2 or containers that cannot participate in the combination for a certain period of time on the second conveyor 3 are collected together at the same timing as the normal combination. To the third conveyor 4,
Moves with the fourth conveyor 5 and the fifth conveyor 6, but collectively
The unit 7 is returned to the first conveyor 2 without falling over, and the objects to be weighed are adjusted and weighed again.

[0011]

1 is a weighing device according to the present invention . Reference numeral 2 denotes a first conveyor that acts from right to left.
At the left end of the upper surface of the conveyor 2, there is provided a stopper 2A adjusted to the position of the scale 9 described later.
Since the container stagnates at A, the belt of the conveyor is made of a material whose surface is slippery to reduce friction. Reference numeral 3 denotes a second conveyor which is disposed parallel to the first conveyor 2 and acts from left to right. The belt of the second conveyor is made of a slippery material and is lower than the weighing surface of the weighing machine 9. The later-described third moving means 13 side is slightly lowered so as to be higher toward the later-described third conveyor 4 side.

Reference numeral 4 denotes a substantially forward half portion 3 of the second conveyor 3.
D is a third conveyor composed of left and right third conveyors 4A and 4B acting inward to each other and arranged in parallel in front of D. The third conveyor 4 is drawn into the lower surface of the second conveyor 3. It is at a position lower than the extension of the fourth moving means 14 described later, and the third conveyors 4A and 4B are at the same speed,
It is configured to operate inward. As a result, the containers collected by the third conveyor units 4A and 4B with the same slipperiness are collected almost uniformly at the center of the merging point regardless of the number thereof. Reference numeral 5 denotes a fourth conveyor which is disposed in front of the center of the third conveyor 4 and which operates from right to left and operates intermittently.

Reference numeral 6 denotes a fifth conveyor connected to the left of the fourth conveyor 5 and operating from right to left. The fifth conveyor 6 having a container detector attached to an outlet thereof collects the containers by a collecting device 7.
, The conveying width is narrowed, and the collecting device 7 can be installed below the container. The end of the fifth conveyor 6 is connected to the start of the first conveyor 2. That is, the containers on the fifth conveyor 6 can be transferred onto the first conveyor 2. Therefore, the collecting device 7 is arranged on the upper surface of the fifth conveyor 6, and is configured to hold the lower corner on the falling side and the upper corner on the diagonal side of the container and to fall without obstructing the flow of the contents. Have been. The collecting device 7 is configured to rotate by 90 ° or more around the point D as a fulcrum. Reference numeral 8 denotes a collecting device connected to the front edge of the fifth conveyor 6.

Reference numeral 9 denotes a left portion 2B of the first conveyor 2 and a second portion 2B.
This is a scale composed of an appropriate number (three in the figure) of weighing units 9A disposed between the left portions 3C of the conveyor 3, which will be described later.
It matches the pitch of the first moving means 11. It is at a position slightly lower than the first conveyor 2. Therefore, the container 1 on the first conveyor 2 is provided on the front surface of the left portion 2B of the first conveyor 2.
0 is moved to the weighing surface of the weighing device 9 by the first moving means 11.
Are provided to be able to move forward and backward in the front-rear direction. This first move
In the means , a groove 11A is formed in a portion corresponding to the container at a weighing interval slightly wider than the container pitch, and the container is configured to be moved onto the weighing device 9 while opening a gap between the containers. 12 is a second moving means disposed retractably in the front-rear direction so as to move the container 10 on scale on the lower surface of the conveying surface of the first conveyor onto the second conveyor 3, the bottom surface weigher 9
To push the container 10 on the scale to the second conveyor 3.

A container 13 is located on the opposite side of the third conveyor 4 along the second conveyor 3 and has a container 10 on the second conveyor 3.
With the appropriate number of third moving means provided to be able to move forward and backward in the forward direction so as to move them onto the third conveyor 4, by the same number as the number of containers 10 participating in the combination calculation, in accordance with the pitch of the containers, etc. They are arranged at intervals. Reference numeral 14 denotes four containers 10 on the upper surface of both ends of the third conveyor unit 4A, 4B on the left and right sides of the third conveyor 4 at the same time, on the lower surface of the transport surface of the second conveyor 3. The fourth moving means is provided so as to be able to move forward and backward in a forward direction so as to be pushed out onto the four conveyors 5.

[0016] 15 and the weighing value of the scale alone 9A in weigher 9, combination target value, it sets an allowable range, in the calculating portion <br/> to show receives the metered weight signal of the scale alone 9A, weighed in order of storage The weight of each of the containers arranged on the second conveyor 3 is stored together with the order in which the containers are arranged.
In the case of six combinations, among 16 or more containers arranged side by side, the closest combination having a set weight or more is calculated from 1 to 4 combinations out of 16 stored in advance. The container is selected by pushing out the third moving means 13 corresponding to the order of the selected combination.

[0017] The number of _{combinations, 16 C 1 + 16 C 2} +
₁₆ C ₃ + ₁₆ C _4, and the calculation is the 16 + 120 +
There are 560 + 1820 = 2516 choices. Furthermore, in the case of lack of combination weight and spread the scope of combination to the metering once twice the discharge of the set 7, _{16
C 5 + 16 C 6 + 16} C 7 + 16 C 8 + 2516 = 43
68 + 8008 + 11440 + 12870 + 2516 =
There are 39202 choices. For this reason, it is possible to sufficiently cope with a wide range of weights charged in the container, but in view of the weighing capacity for practical use, the supply amount is usually adjusted to be four or less.

A more specific description will be given with reference to FIG.
In this case, the combination target weight is 10 g, and the number written in the container 10 indicates the weight (g) of the object to be weighed.
In the case of the first cycle, of the container 10 are aligned on the second conveyor 3, 3 g, 5 g, because the vessel containing the objects to be weighed 2g a total 10 g, the third movement is selected
It will be pushed out by means 13. In the case of the second cycle, of the container 10 are aligned on the second conveyor 3, 4g, 2 g, since the container the objects to be weighed 4g is in a total of 10 g, selected by the third moving means 13 Will be pushed out. In the case of the third cycle, of the containers 10 arranged on the second conveyor 3, 2 g, 3 g,
Since the containers containing 3 g and 2 g of the objects to be weighed are 10 g in total, they are selected and pushed out by the third moving means 13.

[0019]

Since the present invention is configured as described above, the following effects can be obtained. The objects to be weighed are sequentially put into the containers by a feeding device such as a feeder or by hand, and the containers are weighed, stored, temporarily stocked in the order as they are, and the combination is calculated from among them, and the container of the optimum combination is selected, extracted and collected. It can be overturned and discharged. That is, in this case: Do not drop or drop the weighing object during transportation or weighing.
The object to be weighed is scratched or cracked because it slides or rolls during discharging.
Is minimal, and objects that are easy to adhere
Since the sample is discharged only once, attaching the sample to the container
Measurement error due to wearing is small. 2. The number of the weighing scales alone is determined by the combination weighing speed and the stability speed of the weighing scale. However, since the number of weighing scales is as small as 1 to several, the cause of errors is reduced, and the maintenance and cost are also advantageous. 3. In order to increase the combination precision without increasing the balance, union
This can be achieved by increasing the number of containers
Increase the length of the second conveyor for the selected container
You only need to increase the number of means of transportation to move,
It only needs money.

4. Is only containers of simple structure of the objects to be weighed are in contact, washing and is easy, the maintenance time
Work becomes easier. 5. For example, too much weight to enter the combination
Containers should be selected at once and provided without falling over at the discharge section.
Return to the feed unit, adjust the amount, weigh again, and participate in the combination.
This eliminates waste of raw materials and materials. 6. In addition, the following effects can be expected. A. Container movement becomes endless and work efficiency is improved.
You. B. When the object to be weighed is discharged from the combination selected container
The container which cannot participate in the discharge by the collecting device 7
Can be prevented. C. Since the selected container falls over in the same direction at the same time,
The objects to be weighed are discharged in a narrow range.

[Brief description of the drawings]

FIG. 1 is an overall perspective view.

FIG. 2 is an enlarged sectional view taken along line AA.

FIG. 3 is an enlarged sectional view taken along line BB.

FIG. 4 is an enlarged sectional view of a main part taken along line CC.

FIG. 5 is a block diagram.

FIG. 6 is a schematic plan view for sequentially explaining the operation of a calculation unit .

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Measuring apparatus 2 1st conveyor 2A stopper 2B Left part of 1st conveyor 3 2nd conveyor 3A Guide 3B Stopper 3C Left part of 2nd conveyor 3D Almost front half part of 2nd conveyor 4 3rd conveyor 4A, 4B Third Conveyor Unit 5 Fourth Conveyor 6 Fifth Conveyor 7 Assembling Device 8 Assembling Device 9 Scale 9A Scale Unit 10 Container 11 First Moving Means 11A Groove 12 Second Moving Means 13 Third Moving Means Fourth Moving Means 15 Operation Unit

Claims (4)

(57) [Claims] 1. A method according to claim 1, wherein a plurality of containers and a number of said containers.
Before the items to be weighed are stored.
A scale (9) for weighing the container, and the plurality of weighed containers.
2nd conveyor (3) where containers are placed and arranged in a line
And the measured value of each container measured by the scale is stored in the container.
Correspondingly memorize, these memorized values are memorized first
In the order of the number of participants within the specified range,
An operation unit (15) for calculating an optimum combination with a predetermined number;
A predetermined number of volumes selected by the combination result in the arithmetic unit
Moving means for moving the container from the second conveyor
A stage (13), which is provided alongside the second conveyor,
The predetermined number of containers moved and placed by the moving means
A third conveyor (4) to be assembled, and the predetermined
Drop the number of containers and discharge the objects in the containers.
A weighing device, comprising: a collecting device (7, 8) for causing the weighing device to perform the weighing. 2. A plurality of containers (10) for storing objects to be weighed.
And a first conveyor (2) for placing and moving the plurality of containers.
And a predetermined number of the containers are transferred from the first conveyor.
First moving means (11) for moving
The first container corresponds to a predetermined number of containers to be moved on the bear.
Mounted on a conveyor and moved and placed by the first moving means.
For weighing the container in which the weighed object is stored.
A predetermined number of scales (9) and the measured number of containers
A second moving means (12) for moving from the balance,
It is installed in parallel with the weighing scale and is moved and mounted by the second moving means.
A second container for collecting the plurality of containers arranged in a line.
Bear (3) and weighing for each container measured by the scale
Store the value corresponding to the container, and
Combined in order from the number stored in
A calculation unit that calculates the optimal combination with a predetermined number of participants
(15) and selected by the combination result in the operation unit
A predetermined number of containers are moved and placed from the second conveyor.
A third moving means (13), which is provided on the second conveyor;
The predetermined position moved and mounted by the third moving means.
A third conveyor (4) for moving and assembling a number of containers;
The predetermined number of combined containers are turned over into a set,
Current coupling device for discharging the set of the objects to be weighed in the container (7, 8)
Weighing apparatus characterized by comprising and. 3. The object fallen and accommodated by the collecting device.
After the container has been discharged, the container is returned to the first conveyor.
The container is moved and placed, and the container is moved between the first conveyor and the second conveyor.
A, the third conveyor, and the first conveyor
Weighing, weighing, calculation selection, set, weighing
3. The method according to claim 2, wherein the apparatus is configured to repeatedly discharge the material.
Weighing device. 4. The method according to claim 1, wherein the selection is performed based on a combination result in the operation unit.
A predetermined number of containers to be weighed discharge the objects in the containers.
The container can be turned over in the collecting device for
Contracts configured to be equal to or less than the number
The weighing device according to claim 1.