JP3364292B2 - Dispersion supply device for the combined 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 combination weighing device, and more particularly to a distributed supply device for objects to be weighed in a combination weighing device in which a plurality of weighing units are arranged in series.

[0002]

2. Description of the Related Art An object to be weighed is supplied to each of a plurality of weighing machines, a combination calculation is performed on the weight values obtained by these weighing machines, and the added value of the combination is optimally close to a preset target value. By selecting a combination and discharging and collecting only the objects to be weighed in the weighing machine corresponding to this optimum combination, a combination weighing device for weighing the objects to be weighed to the target value has been put into practical use. However, this type of combination weighing device is provided with a dispersing and feeding device that feeds the objects to be weighed to each weighing machine.

An example of this distributed supply device, particularly a distributed supply device in a combination weighing device to which a plurality of weighing machines of the present invention are arranged in series, is, for example, JP-A-59-63.
As disclosed in Japanese Laid-Open Patent Publication No. 525, it is common that the object to be weighed is distributed and supplied from a storage hopper for the object to be weighed to each weighing machine through a vibrating trough or chute. In this case, it is usual that the trough and the chute are provided in a plurality of stages so that the objects to be weighed are supplied to each weighing machine as evenly as possible.

[0004]

However, if it is attempted to arrange the vibration type troughs or chutes in a plurality of stages as described above, the structure of the distributed feeding device becomes complicated and the entire size becomes large. It will be.

Further, when the object to be weighed is an article such as raw manure or bracken rice cake, according to the above-mentioned dispersion supply device, during storage in the hopper or supply from the hopper to the weighing machine. The object to be weighed is liable to be damaged inside. Therefore, in the case of this type of object to be weighed, in the past, the object to be weighed has been distributed and supplied to each weighing machine manually by an operator.

In view of the above, the present invention has a simple structure as a distributed supply device for objects to be weighed in a combination weighing device in which a plurality of weighing parts are arranged in series, and the objects to be weighed are relatively even in each weighing part. It is an object of the present invention to realize a device capable of being distributed and supplied to each measuring section without damaging the objects to be weighed, such as raw manure and bracken rice cake, in particular.

[0007]

In order to solve the above-mentioned problems, the object dispersing and supplying apparatus of the combination weighing apparatus according to the present invention is characterized by using the following means.

That is, the invention according to claim 1 of the present application (hereinafter,
A first invention) is a combination weighing device in which a plurality of weighing units are arranged in series, and an object to be weighed storage tank in which an object to be weighed is stored, and the storage tank and each of the weighing units are parallel to each other. Is installed on the weighing unit that has discharged the objects to be weighed and has the same number of adjacent dispersing conveyors as the weighing units that supply the objects to be weighed for the next weighing, and these dispersing conveyors having side wall members on both sides. A wall member for slantingly erected from the bottom of the storage tank to the upper side of each weighing unit in an obliquely upward manner, and for taking out the objects to be weighed in the storage tank from the bottom in appropriate amounts on the belt of the conveyor. It is characterized in that it is erected at an appropriate pitch.

The invention according to claim 2 (hereinafter referred to as the second invention) is, in the same manner as the first invention, a combination weighing device in which a plurality of weighing units are arranged in series, and the object to be weighed in water. And a weighing unit that is installed in parallel between the storage tank and each of the above-mentioned weighing units, and supplies the weighing object for the next weighing to the weighing unit that has discharged the weighing object. With the same number of adjacent conveyors and side walls on both sides
These dispersion conveyors having members are installed obliquely upward from the bottom of the storage tank submerged in water toward the upper side of each weighing section, and the conveyor belt is located in the water in the storage tank. It is characterized in that wall members for taking out the objects to be weighed are provided upright at an appropriate pitch.

The invention according to claim 3 (hereinafter, referred to as the third
In the second invention, in the storage tank,
It is characterized in that it comprises a water flow generating means for generating a water flow for suspending the object to be weighed in water.

[0011]

According to the above structure, according to any of the first to third inventions, among the plurality of measuring units arranged in series,
The object to be weighed for the next weighing is supplied only to the dispersing conveyor to the weighing unit that has discharged the object to be weighed corresponding to the optimum combination by the combination calculation.

In this case, according to the dispersion supply apparatus of the first invention, the objects to be weighed stored in the storage tank are taken out from the bottom of the storage tank by the wall member standing on the belt of the dispersion conveyor. In addition, since this conveyor is arranged in an inclined shape, when there are too many objects to be weighed taken out by the wall member, it immediately drops to the side, and an appropriate amount of the object to be weighed by each wall member. Will be carried. Further, when a specific weighing unit continuously corresponds to the optimum combination and the amount of the object to be weighed around the supply conveyor corresponding to the weighing unit in the storage tank decreases, the amount of the object to be weighed from the region adjacent to the region is reduced. By bringing in the objects to be weighed, the objects to be weighed are held in a substantially even distribution in the storage tank. Therefore,
By the above-mentioned dispersion conveyer, the objects to be weighed are always evenly distributed and supplied to the respective weighing units.

Further, according to the second aspect of the invention, since the object to be weighed is taken out by the wall member of the belt in the dispersion conveyor in the water in the storage tank, the object to be weighed is like raw sushi or bracken rice cake. Even in the case of such articles, it is possible to supply them to the measuring section without damaging them.

According to the third aspect of the invention, the second aspect
In the storage tank of the invention, since the flow is formed in the water by the water flow generating means, the object to be weighed is held in a state of being suspended in the water, and therefore the object to be weighed by the wall member of the supply conveyor is It will be taken out better.

[0015]

EXAMPLES Examples of the present invention will be described below. It should be noted that this embodiment relates to a system configured to automatically weigh and package an object to be weighed such as raw sardines.

As shown in FIG. 1, this system comprises an object supply device 10, a combination weighing device 20, and a packaging device 50.

The measuring object supply device 10 includes a water tank 11 for storing the object to be measured in water, and a combination measuring device 20 for storing the object to be measured stored in the water tank 11 at a high place. And a conveyor 12 for transferring.

The conveyor 12 includes a starting pulley 12a located at the bottom of the water tank 11 and a combination weighing device 20.
A pulley 12b on the terminal side located above the belt, a belt 12c wound between these pulleys 12a and 12b,
It is composed of a motor 12d that runs a belt 12c via the end pulley 12b, and the belt 12d has a large number of partition walls 12e ... 1 at a constant pitch.
2e are erected, and these partition walls 12e ... 12
By means of e, when the belt 12c passes through the water tank 11, the objects to be weighed in the water in the water tank 11 that are in a floating state or in a state close to this are captured and transported obliquely upward. A chute 13 is provided below the end of the conveyor 12 so that the objects to be weighed dropped from the end of the conveyor 12 are supplied to the combination weighing device 20.

On the other hand, the combination weighing device 20 is composed of a dispersion supply unit 30 and a combination weighing unit 40, as shown in FIGS. Then, in the dispersion supply unit 30, a dispersion storage tank 3 into which the object to be weighed is introduced from the chute 13 is provided.
1 and a nozzle device 32 that is disposed at the bottom of the storage tank 31 and causes a flow of water stored in the storage tank 31.
33 has a plurality of (six in the case of this embodiment) dispersion conveyors 33 arranged in parallel for carrying out the objects to be weighed in the storage tank 31 to the combination weighing unit 40.

Each of the dispersing conveyors 33 ... 33 has a starting end pulley 33a located at the bottom of the storage tank 31.
And the combination weighing unit 40 outside the storage tank 31.
End side pulley 33b located above the
a and 33b, an intermediate pulley 33c arranged at a position immediately after leaving the storage tank 31, and the pulleys 33c.
a 33d wound around a to 33c, the portion from the start end side pulley 33a to the intermediate pulley 33c is directed upward, and the portion from the intermediate pulley 33c to the end side pulley 33b is directed downward. It is configured so as to be inclined and have a V-shape in a side view.

Also in this dispersion conveyor 33,
Similar to the conveyor 12 in the above-described object supply device 10, the belt 33d has a large number of partition walls 33 at a constant pitch.
e ... 33e are erected, and these partition walls 33e
... 33e captures an object to be weighed that is in a floating state or in a state close to this in the water in the storage tank 31 when the belt 33d passes through the storage tank 31,
It is designed to be shipped to the outside.

Further, a sensor 34 for detecting whether or not the object to be weighed is present in the object-to-be-measured storage area partitioned by the front and rear partition walls 33e, 33e is provided at the end of each dispersing conveyor 33. ing.

Here, as shown in an enlarged manner in FIG. 4, the intermediate pulley 33c is a pair of left and right belt driving discs 33.
c ', 33c' and side frames 3 on both sides
It is supported via a clutch 33h, 33h on a rotating shaft 33g installed between 3f, 33f.
When 33h is fastened, the belt 33d is driven by rotating integrally with the rotating shaft 33g. The gear 3 is attached to one end of the rotating shaft 33g.
3i is fixed. In addition, the side frame 33
The guide member 33 of the belt 33d is provided inside the f and 33f.
j, 33j are provided.

Further, as shown in FIG. 2, the motor 35 for driving each of the dispersion conveyors 33 ...
The output shaft of the motor 35 drives the drive shaft 37 provided on the side of the drive shaft 37, which is arranged so as to traverse below the intermediate pulleys 33c ... 33c of the dispersion conveyors 33 ... 33 via the gear device 36. It has become so.
The drive shaft 37 is attached to each of the dispersion conveyors 33.
A rotating shaft 33g of 33 ... A gear 33i fixed to 33g
.. 33i are provided with drive gears 38 ... 38 which mesh with each other.

Therefore, when the motor 35 rotates, the gear device 36, the drive shaft 37, and the drive gears 38 ... 3
Gears 33 in each dispersion conveyor 33 ... 33 via 8
i ... 33i is driven, and clutches 33h, 33
For the conveyor 33 to which h is fastened, the intermediate pulley 33c is further driven so that the belt 33d of the conveyor 33 runs. In that case, the engagement control of the clutches 33h, 33h is performed so that the belt 33 intermittently travels with one pitch of the object-to-be-measured storage area partitioned by the partition walls 33e ... 33e.

Further, as shown in FIGS. 2 and 3, the combination weighing unit 40 in the combination weighing device 20 has six sets of weighing units 4 corresponding to the dispersion conveyors 33 ... 33.
1 ... 41.

These weighing units 41 are located directly below the terminal end of the dispersion conveyor 33, and the pool hopper 42 into which the objects to be weighed are fed from the terminal end of the conveyor 33, and below the pool hopper 42. The weighing hoppers 43 and 43 are formed into a pair, and weight detectors 44 and 44 for weighing the objects to be weighed in the weighing hoppers 43 and 43, respectively. A collecting chute 45 that collects the objects to be weighed discharged from the weighing hoppers 43 ... 43 of each weighing unit 41 ... 41 is provided, and a timing hopper 46 (Fig. 1) is provided.

Here, the pool hopper 42 has two gates 42a, 42a, and of the pair of weighing hoppers 43, 43 located below, the hopper 4 which has discharged the object to be weighed.
3, the gate 42a corresponding to 3 is opened, and the weighing hopper 4
3 is to be supplied with objects to be weighed for the next time.

As shown in FIG. 1, a work table 47 is provided on the side of the combination weighing device 20, and a control box 48 is arranged on the work table 47.
With this control box 48, various input operations and accompanying control of the conveyor 12 of the object-to-be-measured supply device 10, the distribution conveyors 33 ... 33 of the combination weighing device 20, and the weight detectors 44 ... 44 of the combination weighing unit 40. 43 or pool hoppers 42 ... 42 based on the result of the combination calculation
Opening / closing control of the gates 43a, 42a of the above, and opening / closing control of the gate 46a of the timing hopper 46 are performed.

The packaging apparatus 50 shown in FIG. 1 has a tray supply conveyor 52 for supplying a tray x for receiving an object to be weighed discharged from a timing hopper 46 provided at a discharge port of the collecting chute 45 from a stock section 51. When,
Water injection machine 5 for filling the tray x with the objects to be weighed with water
3 and a sealing device (not shown) for sealing the upper surface of the tray x in this state.

Next, the operation of this embodiment will be described.

First, by the operation of the conveyor 12 in the object-to-be-measured supply device 10, the objects to be weighed stored in the water tank 11 are taken out obliquely upward from the water tank 11, and the chute 13 is introduced from the end portion thereof. Combination weighing device 20
Storage tank 31 for dispersing the objects to be weighed in the dispersion supply unit 30 in
It is thrown in.

In the storage tank 31, water is made to flow by the nozzle device 32, and therefore the objects to be weighed put in the tank 31 float in the water at a substantially uniform density due to the flow of the water. Is held in

In this state, assuming that the clutches 33h, 33h on the rotary shaft 33g of each of the dispersing conveyors 33 ... 33 are engaged and the motor 35 is operated, the gear device 36, the drive shaft 37, and the drive gears 38 are provided. 38, the belts 33d of the dispersion conveyors 33 ... 33 run through the gears 33i of the dispersion conveyors 33 ... 33 meshed with the drive gears 38 ... 38, the clutches 33h and 33h, and the intermediate pulley 33c. It will be.

By running the belt 33d,
As described above, the objects to be weighed that are suspended in the water in the storage tank 31 are captured by the partition walls 33e ... 33e that are erected on the belt 33d, and the partition walls 33e ...
While being conveyed to the outside of the storage tank 31 while being accommodated in the object accommodation area between 33e, drainage is performed during the transportation, and the combination measuring section 4 is operated from the end of the conveyor 33.
Pool hopper 4 of each weighing unit 41 ... 41 in 0
Then, it is put into the weighing hopper 43 via 2.

Then, the objects to be weighed out sequentially from the storage tank 31 in this manner are a pair of weighing hoppers 43, 43 and a pool hopper 42 in each weighing unit 41 ... 41.
The combination weighing is started in the state of being supplied to.

That is, the signals from the load detectors 44 ... 44 for detecting the weight of the objects to be weighed in the respective weighing hoppers 43 ... 43 are inputted to the arithmetic unit in the control box 48, and the signals are combined based on the input weight values. The calculation is performed to select the optimum combination having the combination addition value closest to the target value, and the weighing hoppers 43 ... 43 corresponding to the optimum combination are selected.
Control box 48 to open the gates 43a ... 43a of the
A signal is output from the weighing hopper 43, and the objects to be weighed in the weighing hoppers 43 ... 43 are discharged.

In that case, each of the above-mentioned weighing units 41 ... 4
The pair of weighing hoppers 43, 43 in 1 simultaneously perform combination calculation so that they do not correspond to the optimum combination, and
Weighing hopper 4 that discharges the objects to be weighed according to the optimum combination
3 ... 43, the pool hopper 42 located above it ...
42a corresponding to 42 is opened, and the objects to be weighed for the next weighing are immediately supplied. Also, at this time,
Dispersion conveyor 3 corresponding to this pool hopper 42 ... 42
3 ... 33, the clutch 33 on the rotary shaft 33g
By h and 33h being fastened and the intermediate pulley 33c being driven, the belt 33d travels by a preset pitch, and the objects to be weighed stored in the end region of the belt 33d are transferred to the pool hopper 42. It is thrown in.

At this time, when there is no object to be weighed in the region of the end portion of the dispersion conveyor 33, in order to increase the input rate of the object to be weighed into the weighing hoppers 43, ... The signal from the sensor 34 for detecting the presence of the object to be weighed in the area of the distribution conveyor 33 until the sensor 34 detects the presence of the object to be weighed.
The clutches 33h, 3 so that the belt 33d of
Control for 3h is performed.

The objects discharged from the plurality of weighing hoppers 43 ... 43 as described above are collected by the collecting chute 4.
5, when the trays x are temporarily accommodated in the timing hopper 46 provided at the discharge port of the chute 45, and the tray x is fed below the timing hopper 46 by the tray supply conveyor 52. The gate 46a of the timing hopper 46 opens, and the objects to be weighed to the target values as described above are put into the tray x. And, in this tray x, a water injection machine 5
3 will be filled with water and then the sealing device will seal the top surface.

In this way, the combination weighing is continuously performed, and the combination weighing unit 4 for performing the combination weighing is performed.
In the dispersion supply unit 30 for supplying the objects to be weighed to 0, the start ends of the dispersion conveyors 33 ... 33 are located in the bottom of the storage tank 31 in a state of being submerged in water.
Since the object to be weighed is suspended in the water by the water flow generated by the nozzle device 32, when the dispersion conveyor 33 is operated, the belt 33 of the conveyor 33 is operated.
The partition walls 33e ... 33e which are erected on d do not damage the objects to be weighed, but reliably capture them and supply them to the combination weighing unit 40.

Incidentally, the belt 12 and the partition walls 12e ... 12e of the conveyor 10 in the object supply device 10 in the above embodiment, and the belt 33d and the partition wall 33e of the dispersion conveyor 33 in the dispersion supply unit 30 of the combination weighing device 20. 33 e may be formed of a mesh to improve drainage.

[0043]

As described above, according to the present invention, among the plurality of weighing units arranged in series, the weighing unit which has discharged the object to be weighed corresponding to the optimum combination by the combination calculation,
The object to be weighed for the next measurement is supplied only by the dispersion conveyor.

In this case, according to the dispersion supply apparatus of the first invention, the objects to be weighed stored in the storage tank are taken out from the bottom of the storage tank by the wall member erected on the belt of the dispersion conveyor. In addition, since the conveyor is arranged in an inclined shape, when the amount of the object to be weighed out by the wall member is too large, it immediately drops to the side. Further, when a specific weighing unit continuously corresponds to the optimum combination and the amount of the object to be weighed around the dispersion conveyor corresponding to the weighing unit in the storage tank is reduced, the region adjacent to the region is covered. The objects to be weighed are brought in, and the objects to be weighed are held in the storage tank in a substantially evenly distributed state. Therefore, it is possible to constantly and almost uniformly distribute the objects to be weighed to the respective weighing units with a simple configuration including only the above-mentioned dispersing conveyor.

According to the second aspect of the invention, the object to be weighed is taken out by the wall member of the belt of the dispersion conveyor in the water in the storage tank. Even in the case of such articles, it is possible to supply them to the measuring section without damaging them.

According to the third aspect of the invention, in the storage tank of the second aspect of the invention, since a flow is formed in the water by the water flow generating means, the object to be weighed is held in a state of being suspended in the water. Therefore, the object to be weighed can be taken out more favorably by the wall member of the supply conveyor.

[Brief description of drawings]

FIG. 1 is an overall front view of a weighing and packaging system including a combination weighing device according to the present invention.

FIG. 2 is a plan view showing an embodiment of the combination weighing device.

FIG. 3 is a vertical cross-sectional view of the combination weighing device, taken along the line AA of FIG.

4 is an enlarged cross-sectional view of a main part taken along line BB of FIG.

[Explanation of symbols]

20 Combination weighing device 31 Storage tank 32 Water flow generating means (nozzle device) 33 Dispersion conveyor 33d belt 33e Wall member (partition wall) 41 Weighing unit (weighing unit)

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-148402 (JP, A) JP-A-51-88060 (JP, A) SAIKAI-HAI 3-123232 (JP, U) JP-B-55- 20921 (JP, B1) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01G 19/387 G01G 13 / G01G 17 /

Claims (3)

(57) [Claims] 1. A weighed object dispersion and supply device of a combination weighing device, which disperses and feeds an object to be weighed to a plurality of weighing units arranged in series, wherein the weighed object storage tank stores the object to be weighed.
The storage tank and each of the measuring units are installed in parallel, and have the same number of adjacent dispersion conveyors as the measuring units that supply the measured objects for the next measurement to the measuring sections that have discharged the measured objects. , And these dispersing conveyors having side wall members on both sides ,
A wall member that is installed obliquely upward from the bottom of the storage tank toward the upper side of each weighing unit, and the belt of the conveyor for taking out an appropriate amount of the object to be measured in the storage tank from the bottom of the storage tank. Are provided upright at an appropriate pitch. 2. A weighed object dispersion and supply device of a combination weighing device for dispersing and weighed objects to a plurality of weighing units arranged in series, wherein the weighed object storage tank stores the weighed objects in water. And a parallel conveyor that is installed between the storage tank and each of the weighing units in parallel, and has the same number of adjoining dispersion conveyors as the weighing units that supply the objects to be weighed for the next weighing to the weighing units that have discharged the objects to be weighed. Having , and these dispersion conveyors having side wall members on both sides, while being obliquely erected upward from the bottom of the storage tank submerged in water toward above each weighing unit,
An object dispersing / supplying device of a combination weighing device, wherein a wall member for taking out an object to be weighed in water in a storage tank is erected at a proper pitch on a belt of the conveyor. 3. The combination weighing device according to claim 2, wherein the storage tank is provided with water flow generating means for generating a water flow for suspending the object to be weighed in water. Dispersing and supplying device.