JPH01199125A - Device for combination measuring - Google Patents

Abstract

PURPOSE:To accurately carry out measuring modes such as discharge of combined different products and measure of a large amount of combinations while reducing the size of a device by a method wherein objects to be measured which are discharged from an integrated chute of a plural number of combined measuring units are combined to be discharged from a general chute. CONSTITUTION:Three combination measuring units 10, 20, 30 are located on a mount 1 at approximately equal intervals with their circumference in contact with one another. The units 10, 20, 30 combinedly calculate the measured values of objects to be measured while have been measured by a plural number of measuring hoppers 14, 24, 34, which are located on the same circumferences respectively, and select a combination close to the set value respectively specified. These selected objects to be measured are discharged in terms of each unit from storages of the measuring hoppers 14, 24, 34 via integrated chutes 17, 27, 37. The objects to be measured which are discharged are sent via the discharge hoppers to discharge chutes 40, 41, 42. After they are temporarily kept by intermediate shutters respectively, they are discharged to a general chutes 45 where they are moderately mixed to be discharged together.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Application Field of the Present Invention The present invention relates to a combination weighing device that weighs one object with a wave meter and discharges the objects to be weighed in combination based on the weighing result.

<Prior Art> Conventionally, a single combination device has been used to efficiently package and package predetermined amounts of articles having individual weight variations.

In this type of weighing device, a plurality of weighing sections (consisting of hoppers, scales, etc.) are arranged in a ring around the outer periphery, and objects to be weighed are fed into these weighing sections from above and weighed. A predetermined amount of objects to be weighed are combined and collectively discharged downward.

However, in the case of such a weighing device, the larger the number of weighing parts (including hoppers, etc. that accommodate hanging objects), the more accurate the combination becomes possible. It is mounted so that the gap between the matching measuring parts is made as small as possible.

Problems to be Solved by the Present Invention> However, in recent years, it has become possible to not only weigh only the same type of items, but also to weigh predetermined combinations of items to be weighed of different types, and to vary the size of each bag. Measuring forms are diversifying, and in order to maintain high combination accuracy for these various measuring forms, it is necessary to significantly increase the number of measuring parts, but the unit length of the outer periphery of the device Since there is a limit to the number of measuring sections that can be mounted at one time, the outer diameter of the combination weighing device must be increased in accordance with the number of required measuring sections in conventionally structured devices.

That is, a combination meter IVR having 10 measuring parts on the outer periphery.
In order to increase the measuring part to 30fil compared to Iif, the diameter must be set to three times the size,
This would increase the area occupied by the device nine times, making the device enormous and extremely difficult to implement or install.

An object of the present invention is to provide a combination weighing device that solves the above problems.

Means for Solving the Problems> In order to solve the problems described above, in the combination weighing device of the present invention, objects to be weighed are weighed by a plurality of weighing sections arranged on the same circumference, and each Combine the measuring parts to get the desired amount of wave meter! A plurality of combination weighing units for discharging objects from a collection chute are installed on the same base so as to be adjacent to each other, and objects to be weighed discharged from the collection chutes of the plurality of combination weighing units are combined and collectively discharged. A comprehensive chute is provided.

Effects> Therefore, the size of the entire combination weighing device configured as described above can be approximately proportional to the number of combination weighing units, and the mounting density of the weighing sections can be increased.

Examples of the present invention> (Figures 1 to 3) An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a front view showing a combination weighing device according to an embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1.

In these figures, 1 is a base formed in a square shape, and four legs 2 are provided at the four corners of the lower surface 1a.

On the upper surface 1b of the base 1, there are three combination weighing units 10.
．． 20 and 30 are centrally arranged at approximately equal distances and with their outer peripheries adjacent to each other.

The combination weighing units 10.20.30 are formed in the same manner, and receive objects to be weighed that are dropped and fed from above with a circular umbrella-shaped circular feeder 11.21.31. The objects to be weighed are fed to ten radial feeders 12, 22, and 32 arranged radially around the periphery, and excess quantities of the objects are stored in intermediate hoppers 13, 23, and 33 provided annularly at the upper part of the outer periphery. do.

At the lower part of the intermediate hopper 13.23.33, there is a weighing hopper 14.2 serving as a weighing section for receiving the object to be weighed discharged from the intermediate hopper 13.23.33 and detecting its IMI.
4.34 are arranged in an annular manner, ten each on the same circumference of the outer periphery.

This weighing hopper 14.24.34 has two compartments 15.16.25.26 (35, 35,
36 (not shown) are formed, and the intermediate hopper 13.
23. 33 can selectively supply objects to be weighed to this storage section, and the objects to be weighed supplied to the storage section are transferred to the weighing hopper 1.
It is weighed by a scale (not shown) provided every 4.24.34.

This measurement is performed by subtracting the weighing section before the object to be weighed is stored in any of the storage sections from the weighing section after the object is stored.

This combination weighing unit 10, go, 30 performs a combination calculation of the weighing parts of the objects to be weighed, selects a combination close to the setting layer set respectively, and weighs the selected objects to be weighed. Total of 1 device 1f1 combined from hopper storage section
Discharge every 0.20.30.

At the bottom of each combination weighing unit 10.20.30, a collection chute 17.27.37 is provided for collectively discharging the objects to be weighed from the weighing hopper 14.24.34 for each combination weighing unit. ing.

Discharge port 17a of each collecting chute 17.27.37 (2
7a, 37a are not shown), there is a collecting chute 17.2.
7. Discharge hopper 18 (28, 38 not shown) for temporarily storing and discharging the object to be weighed discharged from 37.
is provided.

Each combination meter hanging unit 10.20 formed in this way
Below the discharge hopper 130, there is a discharge chute 40.4L 4 formed in the shape of a gutter for receiving the object to be weighed from each discharge hopper 18 (28, 38) and guiding it below the center of the base 1.
2 is provided.

In the middle of each discharge chute 40, 41, 42, as shown in FIG.
41a and 42a are provided. This intermediate shutter is for simultaneously discharging the objects to be weighed which are discharged from each combination weighing unit at different times to a general chute 45, which will be described later, and mixing them appropriately.

Each of the discharge chutes 40, 41, and 42 is inclined so that its discharge side is in contact with the inner peripheral wall of the general chute 45 disposed below the center shaft of the base 1, and the wave meter ffi from each discharge chute is Things will be grouped together in this comprehensive chute 45.

In addition, by providing this discharge chute, the size of the opening of the general chute 45 can be made very small, and maintenance etc. can be made very easy.

Below the discharge port 45a of the general chute 45, there is a hopper 46 that receives the objects to be weighed from the general chute 45 and alternately distributes and discharges the objects to the left and right (in FIG. 1). It is located.

In this distribution, the hoppers 4 and 6 are connected to the packaging conveyor 60, which will be described later.
This is provided to compensate for the fact that the conveying capacity of the weighing device is lower than the discharging capacity of the reference weighing device.

There is a wave meter W below the hopper 46 where the distribution is discharged.
! Guide elements 49 are provided for guiding the articles into the respective input hoppers 47,48.

As shown in FIG. 1, the interval between the input hoppers 47 and 48 is determined by the distance between the packaging trays 60 and 60, which are conveyed on the packaging conveyor 60, which is installed to pass through the lower part of this combination weighing device.
It is set equal to the interval of 1, and the input hopper 47.4
The objects to be weighed discharged from the trays 8 are supplied to adjacent packaging trays 61, respectively.

This packaging conveyor 60 has an interval of 2 times the interval between the packaging trays 61.
The packaging tray 61 is intermittently conveyed at a conveyance pitch of twice the distance.

In addition, 51, 52, 53 in the figure indicate each combination weighing unit 1.
0.20.30 is a supply conveyor for supplying objects to be weighed from above, and in the figure, 18a (28a, 38a are not shown), 40b, 41b, 42b, 46a, 46b, and 47a, 48a are respectively Discharge hopper 18 (28,
38), a drive device for opening and closing the discharge chute 40, 41, 42, the sorting hopper 46, and the input hopper 47, 48, which are of well-known construction and will not be described in detail.

In addition, 55 in the figure is suspended from the lower surface 1a of the base 1 via a support 55a, and includes a general coat 45, a hopper 46 for distribution, and a hopper 46 for distribution.
This is a support plate for supporting input hoppers 47 and 48.

Operation of the above-mentioned embodiment> The combination weighing device configured as described above is capable of performing various weighing operations. This section explains the case where you want to package the product in a state where it is

Different objects to be weighed A, B, C from the supply conveyor 51.52.53 are transferred to the combination weighing unit 10.20.3.
When the objects to be weighed A, B, and C are fed to the circular feeder 11.21.31 of
2.32 to each intermediate hopper 13.23.33.

The objects to be weighed supplied to the intermediate hopper 13.23.33 are
One storage compartment 1 of each weighing hopper 14, 24, 34
5.25<35) and weighed.

The object to be weighed is again supplied to the empty intermediate hopper 13.23.33 from the radiant feeder 12.22.32, and is stored in the other storage section 16.26 (36) and weighed.

Here, each combination weighing unit 10, 20, 30 selects a combination of the objects to be weighed A, B, and C close to a predetermined amount based on the weighing section. The combination weighing units 10, 20. Each combination is selected using a fixed setting value, and the selected objects to be weighed A, B, and C are combined with each phase weighing unit 10.
．． From 20.30, there is a method of simultaneously discharging the two types of objects to be weighed, B and C, after first selecting a combination of the two types of objects to be weighed B and C using the combination weighing unit 20.30, and then discharging the selected objects B and C at the same time.
The value obtained by subtracting the required amount of a (set value) for each bag of C-adults is set in the combination weighing unit 10 as the combined target amount of the object to be weighed A, and a combination of objects to be weighed that is close to this target amount is set. Possible methods include discharging A.

To explain the latter case where the error in the total weight is small, the objects to be weighed B and C selected for combination in the combination weighing unit 20.30 are placed in their respective collective chutes 27.37.
It is then stored in the discharge hopper (28, 38). Note that during this accommodation, the combination weighing unit 20.30 selects the next combination of the objects B and C to be weighed.

Next, a combination of objects to be weighed A that is close to the value obtained by subtracting the added amount of objects to be weighed B and C (2111 fixed hanging) stored in the discharge hopper (28, 38) from the total amount per bag (set amount) is selected by the combination weighing unit 10, and the selected object to be weighed A
passes through the collection chute 17 and the discharge hopper 18,
Pre-closed intermediate shutter 408 of discharge chute 40
Temporarily stopped in the department.

In addition, at this time, the discharge hoppers (28, 38) are also opened at the same time, and the object to be weighed B1C is also placed in each discharge chute 4L.
42 intermediate shutter portions 41a and 42a.

Discharge hopper (28, 3-8
>, the next wave meter 15#JB whose combination has been selected in advance
, C are accommodated, respectively.

Next, the intermediate shutters 40a, 41a, and 42a are opened at the same time, and the objects to be weighed A, B, and C are collected in the general chute 45 almost simultaneously, mixed appropriately, and then sorted into the hopper 46.

The objects to be weighed stored in the hopper 46 are sorted and discharged, for example, to the input hopper 47 side, and are inputted from the input hopper 47 into the packaging tray 61.

When the intermediate shutters 40a, 41a, and 42a are closed again, the discharge hopper (28) is opened in advance in the same manner as described above.

38) and the next selected object to be weighed B1C stored in
Based on the objects to be weighed B and C, the next selected object to be weighed A from the combination weighing unit 10 selected in the same manner as described above is stopped at the intermediate shutters 40a141a and 42a, respectively.

Next, when the intermediate shutters 40a and 41a and 142a are opened again, the next objects to be weighed A and 81G are mixed in the general chute 45, the sorted items are stored in the hopper 46, and the sorted items are discharged to the input hopper 48 side. It is placed on the lower packaging tray 61.

In this way, when a predetermined amount of properly mixed objects to be weighed are loaded into adjacent packaging trays 61, the packaging conveyor 60 is conveyed at a predetermined pitch, and empty packaging trays 61 are conveyed at a predetermined pitch.
1 is conveyed below the input hopper 47,48.

Thereafter, in the same manner, a predetermined amount of appropriately mixed objects to be weighed are sequentially put into the packaging tray 61 and packed into bags by a packaging machine (not shown).

In this example, the operation of mixing and discharging the three types of objects A, B, and C in predetermined amounts was explained, but the same operation was performed for the three rough combined weighing units 10, 20, and 30. It is also possible to supply objects to be weighed in a variety of ways, such as combining and discharging objects close to a predetermined amount with high accuracy, and combining and discharging a large amount of objects with high precision. It is possible.

Other Embodiments of the Present Invention In the above embodiment, three combination weighing units are installed, but two or four or more may be installed, and this combination weighing unit is also similar to the above embodiment. They don't all have to be the same.

Furthermore, the configuration of the weighing section is not limited to the above-mentioned embodiments. For example, objects to be weighed that have been weighed in a weighing hopper are stored in a plurality of storage hoppers, and the objects to be weighed stored in the storage hoppers are A combination of these may be selected.

Effects of the Present Invention In the combination weighing device of the present invention, as described above, a plurality of combination weighing units are arranged in a concentrated manner adjacent to each other on the same base, and each combination weighing unit is discharged from the collection chute. Since the object to be weighed is configured so that it can be discharged all at once using the integrated chute, it can be made very compact compared to the number of weighing sections, and can be used for various purposes such as mixed discharge of different types of objects to be weighed, multi-base combinations, etc. can be performed with much higher precision.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the present invention, and FIG. 2 is a front view showing one embodiment of the present invention.
The plan view of the figure, FIG. 3, is an enlarged view of a part of FIG. 2. 1...Base, 10.20.30...Combination weighing unit, 14.24.34...Weighing hopper, 17.27.37... collective shoot,
40.41.42...Discharge chute, 45...
...Comprehensive shot, 46... Distribution is hopper, 47.48... Throwing hora ba, 60...
...Packaging conveyor, 61...Packaging tray. Figure 3

Claims (1)

[Scope of Claims] A combination weighing unit that weighs objects to be weighed using a plurality of measuring sections arranged on the same circumference, and discharges a desired amount of objects to be weighed from a collection chute by combining the respective measuring sections. A combination weighing device, characterized in that a plurality of units are provided on the same base so as to be adjacent to each other, and objects to be weighed discharged from collection chutes of the plurality of combination weighing units are combined and collectively discharged from a general chute.