JPH0631379Y2 - Combination weighing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field of the present invention> The present invention relates to a combination weighing device for combining and discharging and collecting objects to be weighed measured by a plurality of weighing units.

<Prior Art> (FIGS. 7 to 8) As shown in FIG. 7, a weighing device of this type is designed so that an object to be weighed from above is fed into a circular cone-shaped feeder 1 and a radiation feeder 2, 2 ,. Are dispersed in the outer peripheral direction and received by a plurality of intermediate hoppers 3, 3 ,.
The objects to be weighed from 3 are weighed by the weighing hoppers 4, 4, ..., 4 which are connected to the weighing device (not shown), and the combination close to the target amount is set based on each weighing value. The objects to be weighed selected in this combination are discharged all at once and collected under the device by the collecting chute 5.

A wrapping machine and a wrapping line (conveyor) are arranged in the central void portion 7 of the base 6 supporting the collecting chute 5, and the objects to be weighed are collected in a target amount one by one.

If the object to be weighed does not easily fall due to its own weight, for example, if the object to be weighed contains a large amount of water or is sticky, the objects to be weighed to be discharged are the weighing hopper 4 and the collecting chute. If it remains in No. 5, the amount of the selected combination and the actually discharged amount of the objects to be weighed are different from each other, and the variation of the product becomes large.

Therefore, as shown in FIG. 8, the nozzle 8 for blowing air into the inside of the weighing hopper 4 is fixed on the base 6 by the support plate 9, and the inner peripheral wall 5a of the collecting chute 5 is fixed.
Conventionally, a device has been provided in which a nozzle 10 for blowing air along a base is attached to a base 6 and air is sent to the nozzles 8 and 10 when discharging an object to be weighed to prevent adhesion of the object to be weighed. Was better

<Problems to be solved by the present invention> However, in this type of weighing device mainly for weighing foods and the like, it is necessary to frequently clean the hopper and the chute, and the hopper and the collecting chute are formed in advance in a removable manner. However, as described above, the nozzles 8 and 10 of the air blowing device are
Is attached to the outer circumference of the weighing hopper 4 and the collecting chute 5, there is a problem in that workability such as attachment and detachment and inspection is significantly deteriorated.

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

<Means for Solving the Problems> In order to solve the above problems, the combination weighing device of the present invention is
The air spraying device is integrally formed for each of a plurality of adjacent measuring units, and is configured to be rotatable in a direction away from the measuring units and the collecting chute.

<Operation> Therefore, if the air spraying device is rotated in the direction away from the measuring unit and the collecting chute, the plurality of measuring units and the collecting chute can be easily attached / detached, cleaned, or inspected.

<Embodiment of the Invention> (FIGS. 1 to 3) Hereinafter, an embodiment of the invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an essential part of an embodiment of the present invention, FIG. 2 is a schematic front view of the embodiment, and FIG. 3 is a plan view of the embodiment.
FIG. 4 is a schematic plan view of the hopper of one embodiment.

2 to 4, reference numeral 11 denotes a conical circular feeder for vibrating and transporting the object to be weighed received from above to the outer peripheral portion, 12
Is a radiation feeder that conveys the objects to be weighed received from the circular feeder 11 toward the outside of the apparatus by vibration.

The circular feeder 11 and the radiation feeders 12, 12, ...
, 12 are arranged on the upper surface 13a of the prismatic casing 13, and the intermediate hopper 1 for receiving the objects to be weighed from the respective radiation feeders 12 is provided on the upper side of the casing 13 side surface 13b.
4, 14, ..., 14 are attached.

The intermediate hoppers 14, 14, ..., 14 respectively have two discharge gates 14a, 14b which are opened and closed by an opening / closing device (not shown).

Below each of the intermediate hoppers 14, 14, ..., 14 are weighing hoppers 15, 15, for weighing the objects to be weighed, respectively.
.., 15 are respectively supported by a plurality of weighing devices (not shown) mounted inside the housing 13.

Each of the weighing hoppers 15, 15, ..., 15 is vertically partitioned and has two storage portions 15a, 15b. By opening the respective discharge gates 15c, 15d,
It is possible to independently discharge the stored objects to be weighed.

The intermediate hoppers 14, 14, ..., 14 and the weighing hoppers 15, 15, ..., 15 are formed so as to be attachable to and detachable from the housing 13 and the weighing instrument.

A collecting chute 16 is arranged below each weighing hopper 15.

The collecting chute 16 is a chute piece 16a, 16b for receiving the weighed objects from the two weighing hoppers 15, 15.
And chute pieces 16c, 16d for receiving the objects to be weighed from the three weighing hoppers 15, 15, 15 and can be pulled out substantially along the inclination direction thereof.

Four columns 18 supporting the housing 13 are inserted from the inner slope 17a of the base 17 between the chute pieces.

On the outer sides of the upright portions 18a of the four columns 18, stay plates 19 extending laterally above the collecting chute 16 are attached.

A support plate 20 bent at a right angle in FIG. 3 is attached to each of the front end portions 19a of the stay plates 19.

The two plate portions 20a and 20b of the support plate 20 have substantially opposite L
-Shaped grooves 21 are provided respectively, and two support plates 2 are provided.
Between 0, air spraying devices 25, 25, 35, 35 supported by screws 22 inserted through the groove 21 are provided.

As shown in part in FIG. 1, the air spraying devices 25 and 35 spray air along the storage portions 15a and 15b of the weighing hopper 15 and the discharge path of the objects to be weighed of the collecting chute 16. , 36 are plate portions 20 of the support plate 20.
It is a side plate which is parallel to a and 20b and is screwed through a groove 21.

27 and 37 are bent along the direction of the weighing hopper 15,
A hollow pipe is a connecting pipe that is partitioned into each of the weighing hoppers 15, and inside thereof, there are a plurality of chute nozzles 28 and 38 for blowing air along the inclined surface from the open edge of the collecting chute 16. Installed.

L-shaped support plates 29, 39 are provided on the connecting pipes 27, 37.
Nozzles 30a, 30b, 4 for hoppers supported by
0a and 40b are provided for each weighing hopper 15.

This hopper nozzle is formed in a cylindrical shape with its tip closed, and as shown in FIG. 4, spray holes (31, 31) for spraying air toward the gaps of the discharge gates 15c, 15d of the weighing hopper 15, respectively. 41) are provided.

Connecting pipes 27, 37 and hopper nozzles 30a, 30
Air is supplied to b, 40a, and 40b from air supply devices 42 arranged on both sides of the upper portion of the base 17 via air pipes (not shown), and the inside of the weighing hopper 15 is supplied.
Air is supplied to the connection pipes 27 and 37 partitioned by each side through the side plates 26 and 36 or directly to the connection pipes 27 and 37.

The air supply device 42 supplies air to the corresponding hopper nozzles for a predetermined time when the object to be weighed stored in the storage portion of the weighing hopper 15 selected as a combination has its discharge gate opened, and the collecting chute. A solenoid valve (not shown) is controlled so as to supply air to the chute nozzle corresponding to the object discharged downward along 16 through the connecting pipe.

In FIG. 2, 45 is a discharge chute, 46 is a discharge hopper, and 47 is a discharge chute 45 and a discharge hopper 4.
6 is a discharge nozzle that blows air along the discharge direction of the object to be measured, and is provided in the number corresponding to each of the weighing hoppers 15, 15, ..., 15 (only two are shown in FIG. 2). And others are omitted).

<Operation of the Embodiment> Next, the operation of the combination weighing device having the above configuration will be described.

The objects to be weighed supplied from above to the circular feeder 11 are conveyed to the radiation feeders 12, 12, ..., 12 and are supplied to the intermediate hopper 14.

The intermediate hopper 14 opens the discharge gate 14a on one side, for example, and supplies the objects to be weighed to the one storage portion 15a of the weighing hopper 15.

While the object to be weighed stored in each storage portion 15a is being weighed, the next object to be weighed is supplied from the radiation feeder 12 to the intermediate hopper 14.

When the weighing by the weighing hopper 15 is completed, the intermediate hopper 1
4, the discharge gate 14b on the other side is opened, and the weighing hopper 1
A new object to be weighed is stored in the storage portion 15b on the other side of 5.

The weighing of the objects to be weighed stored in the storage portion 15b is obtained by the difference between the current weight value and the previous weight value, and the two storage portions 15b
The weighing of the objects to be weighed stored in a and 15b is completed.

When a combination that is a predetermined amount is set based on each measured value, the discharge gate of the storage unit that stores the set objects to be weighed is opened, and air is blown from the corresponding hopper nozzle, The objects to be weighed are discharged to the collecting chute 16.

When the selected object to be weighed reaches the inner wall of the collecting chute 16, air is blown from the nozzle for the chute near the discharge progress, and the object to be weighed is accommodated in the discharge hopper 46 via the discharge chute 45 and discharged. When the hopper 46 is opened, air is blown from the discharge nozzle 47 and a predetermined amount of the object to be weighed is discharged to a packaging line or the like.

In the meantime, the following combinations are selected based on the measured values of the objects to be weighed that have not been discharged or based on the measured values including the measured values of the objects to be weighed stored in the empty storage section from the intermediate hopper 14. Then, a predetermined amount of the object to be weighed is sequentially discharged.

When removing the weighing hopper 15 and the collecting chute 16, the intermediate hopper 14 is removed in advance as shown in FIG. 5 (a), and the air blowing device 25 is rotated upward while being pulled up. For example, as shown in FIG. 5 (b), the chute pieces 16a to 16 of the collecting chute 16 are arranged.
It is possible to easily pull up d and remove the weighing hopper 15.

<Other Embodiments of the Present Invention> In the above embodiment, the air spraying devices 25 and 35 were rotated 90 degrees with respect to the weighing device, but the present invention is not limited to 90 degrees, and for example, If the groove 21 'of the support plate 20' is formed in an inverted U shape as shown in FIG. 6, the air spraying device 25 can be rotated 180 degrees.

In addition, in the above-described embodiment, the weighing unit includes two storage units 15a and 1a.
Although the weighing hopper 15 having 5b and the weighing device (not shown) are used, the present invention is not limited to this embodiment. For example, one or a plurality of objects to be weighed by the weighing hopper are provided below the weighing hopper. Also in the weighing device of the type which is stored in the storage hopper, air can be blown to the object to be weighed by providing the hopper nozzle of the above-described embodiment for each hopper.

Further, the method of supporting the air blowing device, the method of rotating the air blowing device, and the like are not limited to those in the above-described embodiment, and needless to say, various modifications and applications are possible.

<Effects of the Present Invention> As described above, the combination weighing device of the present invention blows air along the discharge route of the objects to be weighed discharged from the plurality of weighing units through the collecting chute. Since the device is integrally formed for each of a plurality of adjoining weighing units and is configured to be rotatable in the outer direction of the device, it is possible to attach and detach the weighing unit and the collecting chute very easily. There is.

[Brief description of drawings]

FIG. 1 is a perspective view showing an essential part of an embodiment of the present invention, and FIG.
FIG. 3 is a schematic front view of one embodiment, FIG. 3 is a plan view of one embodiment, and FIG. 4 is a schematic front view of a hopper of one embodiment. FIGS. 5 (a) and 5 (b) are partial side views showing a detached state of the main part of the embodiment. FIG. 6 is a side view of an essential part showing another embodiment of the present invention. FIG. 7 is a schematic front view showing the basic configuration of the combination weighing device,
FIG. 8 is a perspective view showing a mounting state of a conventional air blowing device. 15 ... Weighing hopper, 20 ... Support plate, 25, 35 ...
Air spraying device, 27, 37 ... Connecting pipe, 28, 38 ...
Chute nozzles, 30a, 30b, 40a, 40b ...
... Nozzle for hopper, 42 ... Air supply device.

Claims (1)

[Scope of utility model registration request] 1. A plurality of weighing units for respectively receiving and weighing objects to be weighed, a collecting chute for receiving and discharging the objects to be weighed discharged from the plurality of weighing units, the plurality of weighing units and the group. In a combination weighing device comprising an air blowing device that blows air along a discharge path of the object to be weighed of the chute, the air blowing device is integrally formed for each of the plurality of adjacent weighing units, and the weighing unit and A combination weighing device, which is attached so as to be rotatable in a direction away from a collecting chute.