JPH0136096Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a combination scale, more specifically, it is equipped with a plurality of weighing hoppers, distributes objects to be weighed to each weighing hopper, weighs the objects to be weighed in each weighing hopper, and combines each weight. The present invention relates to a device for discharging objects to be weighed in a combination weigher, which obtains a predetermined weight or a weight close to a predetermined weight.

Conventionally, the above-mentioned combination scales were not equipped with a device for discharging objects to be weighed, so if an extremely heavy or extremely light object was delivered to one of the weighing hoppers, the combination scale However, there was a problem that the number of combinations close to a predetermined weight was small, resulting in poor accuracy. Particularly when a permissible weight for a predetermined weight is determined, there has been a problem in that the combined weight does not fall within the permissible weight and the operation of the combination scale stops. In addition, even if large weight objects are combined, the weight will not be close to the predetermined weight, so there is a problem that the weighing objects will remain for a long time.

The present invention was devised in view of the above-mentioned conventional circumstances, and its purpose is to discharge extremely heavy or light objects to be weighed from the discharge path, and then place new objects to be weighed into the weighing hopper. The accuracy can be improved by increasing the number of combinations that are close to a predetermined weight.

Such a device for discharging objects to be weighed in a combination scale of the present invention is such that, in the combination weigher, a hopper for receiving the object to be weighed in the weighing hopper is provided below the combination weigher, and one end of the hopper is connected to a working machine. The conveyance path is provided with a branch path, the other of which is connected to the discharge path, and the branch path is provided with a directional valve for guiding the object to be weighed to either the conveyance path or the discharge path.

An example of the implementation of the present invention will be explained with reference to the drawings. In the drawing, A is a combination balance, and first, two dispersion plates 20,
20 are arranged in parallel to convey and circulate the objects to be weighed in relative directions, and a plurality of distribution paths 21 are arranged in parallel in the conveyance direction on the outer edge of each distribution plate 20, 20, and each distribution path 22 is A pool hopper 22 is provided in each of the pools. A weighing hopper 23 supported by a load cell 24 is disposed below each pool hopper 22, and a lower lid 25 of each pool hopper is opened when the weighing hopper 23 becomes empty. In addition, the lower lid 26 of the weighing hopper 23 has a predetermined weight inputted to a central processing unit (not shown) or a combination closest to the lower lid 26 of the weighing hopper 23.
6 will start to open. A collecting plate 27 is arranged below each weighing hopper 23 to collect objects to be weighed.

A hopper 3 is provided below the collecting plates 27, 27, and a branch path 1 is provided below the hopper 3, which is bifurcated and has a conveyance path connection port 9 and a discharge path connection port 10. The branch path 1 is rotatably provided with a curved directional valve 2 so as to be smoothly continuous with each connecting port 9, 10, so as to guide the object to be weighed to either one of the connecting ports 9, 10. do.

The discharge passage 4 is located at the discharge passage connection port 10 of the branch passage 1.
Concatenate. The discharge path 4 is formed by connecting pipes having elbow shapes of 45 degrees at both ends rotatably with a flange portion 15, and the discharge port can be moved by rotating each pipe arbitrarily. can.

The conveyance branch path 5 is connected to the conveyance path connection port 9 of the branch path 1 . The conveyance branch path 5 is formed in a bifurcated shape, and each conveyance port is provided with a lower cover 7, 7, 8, 8 that can be opened and closed freely, and a directional valve 6 similar to the directional valve 2 is disposed to open and close the lower cover 7, 8, and 8. The object to be weighed is guided to any one of 7, 8, and 8. Conveyance paths 11 and 12 are provided below the lower lids 7, 7, 8, and 8, respectively, and the filling machine 1
3 and 14, respectively.

The directional valves 2, 6 and the lower covers 7, 7, 8, 8 are connected to the cranks 2', 6', 7',
8', and the directional valves 7, 8 and the lower covers 7, 7, 8, 8 are operated by the rotation of the cranks 2', 6', 7', 8'. Also, each crank 2', 6',
7' and 8' are connected to the motor M via an electromagnetic clutch (not shown), and turn the electromagnetic clutch ON and OFF.
be controlled by

Next, the directional valves 2, 6 and the lower lids 7, 7, 8, 8
The operation timing will be described below.

First, the weighing hopper 23 opens for the purpose of discharging the objects to be weighed. If the weight of the objects to be weighed exceeds the predetermined maximum and minimum weights and cannot be used in a combination, the weighing hopper 23 opens to discharge the objects to be weighed. If the weight does not fall within the allowable range, if an unopened weighing hopper occurs after a predetermined number of combination operations, or in any of the above cases, when the lower lid 26 of the weighing hopper 23 opens, the direction The valve 2 rotates to guide the object to be weighed to the discharge path 4, and the directional valve returns to its original position when the discharge is completed.

The directional valve 6 of the conveyance branch path 5 reverses itself every time the object to be weighed passes, and alternately guides the object to the lower lids 7, 7 and 8, 8. Also, the filling machine 13,
When one of the 14 is out of service for inspection, repair, etc., the system guides the user to the operating side.

Next, the lower lids 7, 7, 8, 8 are controlled in accordance with the processes of the filling machines 13, 14 so as to be interlocked with each operation of the filling machines 13, 14.

In the above embodiment, the working machine connected to the conveyance path is a filling machine, but it may also be a filling and packaging machine, a bag making, filling and packaging machine, etc., and the number of machines may be one or more, two or more, and is arbitrary.

Further, the present invention can be implemented regardless of the structure of the combination weigher as long as it has the same function.

As described above, the present invention provides a combination scale in which a hopper for receiving the object to be weighed in the weighing hopper is provided below the combination scale, and one side of the hopper is connected to a conveyance path connected to a working machine and the other side is connected to a discharge path. The device for discharging objects to be weighed in a combination weigher is configured by providing a branch path formed by the above-mentioned branch path, and a directional valve for guiding the object to be weighed to either the conveyance path or the discharge path. Since extremely heavy or light objects to be weighed can be forcibly discharged, the weighing accuracy of the combination can be improved. Therefore, the combined weight rarely falls within the allowable weight range,
There is also no risk that the object to be weighed will remain in one hopper for a long time.

By doing so, we will reach our intended purpose.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, and FIG. 2 is an enlarged view of the main parts. In the figure, 1...branch path, 2...directional valve, 3...hopper, 4...discharge path, 5...conveyance branch path, 7,
7, 8, 8...Lower cover, 9...Discharge channel connection port, 10
...Conveyance path connection port, 23...Measuring hopper, A...
...It is a combination scale.

Claims (1)

[Scope of utility model registration request] A plurality of weighing hoppers are provided, objects to be weighed are distributed to each weighing hopper, the objects to be weighed in each weighing hopper are weighed, and the respective weights are combined to obtain a predetermined weight or a weight close to the predetermined weight. In the combination weigher, a hopper for receiving the object to be weighed in the weighing hopper is provided below the combination weigher, and the hopper is provided with a branch path in which one side is connected to a conveyance path connected to a working machine and the other side is connected to a discharge path. A device for discharging objects to be weighed in a combination weigher, wherein the branch path is provided with a directional valve for guiding the objects to be weighed to either the transport path or the discharge path.