JPH08271328A - Combination weighing and counting system - Google Patents

Abstract

PURPOSE: To provide a combination weighting device in which a required time for switching a substance to be weighed can be shortened to enhance the operation rate, and the opening and closing sound of a hopper is never caused. CONSTITUTION: The weighed value of a substance to be weighed weighed by a plurality of weighing hoppers 10 or the number of pieces determined from the weighed value is combinationally operated to determine the substance to be weighted of a combination forming the weight or number of pieces within an allowable range. This system has a mode switching means 38 for switching a device to weighing mode and discharge mode, and a mode control means 39 for controlling the device on the basis of a set mode. The mode control means 39 operates a corresponding supplying means S interlockingly with the opening and closing operation of the weighing hopper 10 when the weighing mode is set. It also operates and controls the supplying means S as the weighing hopper 10 is held in the opened state, when the discharge mode is set, so that the substance to be weighted left in the supplying means S is continuously discharged to the outside of the device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention distributes objects to be weighed, such as confectionery and foods, to a plurality of weighing devices, and selects weighing devices from a weighing result of each weighing device that are close to a target value to be weighed. More particularly, the present invention relates to a combination weighing / counting apparatus and method capable of quickly switching objects to be weighed.

[0002]

2. Description of the Related Art Combination weighing and counting devices are used for confectionery, fruits,
An object to be weighed, such as a processed food having a non-uniform shape, which has a variation in individual weight, is weighed within a target weight range (see Japanese Patent Laid-Open No. 63-30725).

This type of combination weighing / counting apparatus has a large number of weighing heads provided with a drive feeder for feeding an object to be weighed, a pool hopper, and a weighing machine including a weighing hopper and weighing means connected thereto. The weighing values of each weighing device are combined and calculated, and the combination of weighing hoppers that have a weight or number within the allowable range is selected, and the objects to be weighed are discharged so that the weight within the target weight range or Obtain the number of products.

In this combination weighing / counting apparatus, when the kind of the object to be weighed is switched, the operator manually switches the operation mode to set the discharge mode to set the pool hopper and the weighing hopper of each weighing head to a predetermined value. For example, all the weighing heads are divided into three groups, and the weighing hoppers and pool hoppers of each group are sequentially opened and closed to discharge the residue to the outside of the machine.

When all the remaining objects to be weighed are collected in this way, the discharge mode operation is stopped, the passage of the objects to be weighed of the device is washed or cleaned, and then a new object to be weighed is combined and weighed. It is supplied to the counting device and the weighing mode operation is started.

[0006]

The conventional combination weighing / counting device, when discharging the objects to be weighed remaining in the device for switching the objects to be weighed, sets the pool hopper and the weighing hopper in a predetermined pattern. Since it is opened and closed, there is a problem in that the time required until the discharge is completed becomes long and the operating rate of the device is reduced.

Further, since the pool hopper and the weighing hopper are repeatedly opened and closed in units of groups, there is a problem that the opening and closing noise is troublesome.

The present invention has been made in view of the above problems, and it is possible to shorten the time required for switching the objects to be weighed to improve the operation rate and to prevent the noise of opening and closing the hopper. An object is to provide a combination weighing / counting device.

[0009]

In order to achieve the above-mentioned object, a combination weighing / counting apparatus according to one configuration of the present invention comprises a plurality of weighing devices for storing an object to be weighed in a weighing hopper, A plurality of supply means for supplying the objects to be weighed to each weighing hopper and the measured value of the objects to be weighed by each weighing device or the number obtained from the measured values are combined and calculated to obtain the weight or the number within the allowable range. Combination calculation means for obtaining a combination of objects to be weighed, mode switching means for switching and setting the weighing mode and discharge mode, and when the weighing mode is set, the combination calculation means is operated and the opening / closing operation of the weighing hopper is performed. When the discharge mode is set, the corresponding supply means is operated in association with the above, and the supply means is operated while the weighing hopper is held in the open state, and the measured objects remaining in the supply means are measured. And a mode control means for continuously discharging the objects to the outside of the apparatus.

According to the above construction, when the mode switching means is set to the discharge mode when the type of the object to be weighed is switched, each weighing hopper is held in the open state, and the supply means is continuously driven to remain. The object to be weighed passes through the weighing hopper in the open state and is continuously discharged to the outside of the apparatus. Moreover, since the weighing hopper is held in the open state, even if the feeding force of the object to be weighed by the supply means is increased, a flow without stagnation of the object to be weighed is formed. Therefore, the discharge of the objects to be weighed remaining in the apparatus can be promptly completed, and the next combination weighing of the objects to be weighed can be swiftly performed, and the operation rate of the apparatus is improved. Further, since the weighing hopper is held in the open state, the opening / closing sound of the hopper is not generated, the noise is remarkably reduced, and the working environment is improved.

A combination weighing / counting apparatus according to another structure of the present invention comprises a plurality of weighing devices for storing the objects to be weighed in a weighing hopper and a plurality of supply means for supplying the objects to be weighed to each weighing hopper. A group dividing means for dividing a plurality of supply paths from these supplying means to the weighing hopper into a plurality of groups, an object to be weighed for inserting an object to be weighed into each group, and the weighing device of each group. A combination calculation means for obtaining the weighed value or the number of pieces obtained from the measured value in combination to obtain the objects to be weighed within the allowable range for each group, and a mode for switching and setting the weighing mode and the discharge mode. Switching means, designating means for designating a group for which the discharge mode is to be set by the mode switching means, and when the weighing mode is set, the combination computing means is operated and When the discharge mode is set, the corresponding supplying means is operated in conjunction with the opening / closing operation of the weighing hopper, and the corresponding supplying means is operated while the weighing hoppers of the designated group are held in the open state. ,
And a mode control means for continuously discharging the objects to be weighed in the group to the outside of the apparatus.

According to the above structure, different types of objects to be weighed for each group can be supplied and weighed for each group and discharged, or after being weighed for each group, they can be mixed and discharged. In the weighing device, when the mode switching means is set to the discharge mode and the group for which the discharge mode is to be set is designated by the designating means, only each weighing hopper of the designated group is held in the open state, and Only the supply means of the group are driven. Therefore, when only a part of the plurality of types of objects to be weighed is switched, only the objects to be weighed remaining in the supply means of the group to be switched can be discharged, and the objects to be weighed can be discharged. For the groups that are not switched, the objects to be weighed can be maintained as they are, and it becomes unnecessary to prepare for the supply of the objects to be weighed in the next combination weighing. On the other hand, the discharge of the residual object to be weighed can be completed promptly by the object to be weighed continuously passing through the weighing hopper held in the open state. Therefore, the operating rate can be further increased.

In the combination weighing / counting apparatus according to one preferred embodiment of the present invention, when the weighing mode is set, the feeding force of each of the supply means is controlled based on the weighing value, and the discharging mode is set. And a supply control means for controlling the supply force to a predetermined value when preset.

According to this embodiment, when the metering mode is set, the feeding force of the supply means is controlled based on the measured value, so that the accuracy of combination is improved, while the supply control means is set when the discharge mode is set. Thus, the feeding force of the feeding means is controlled to a predetermined value. At this time, since the weighing hopper is held in the open state, even if the feeding force is set to the maximum value, a stagnation-free flow is formed through the weighing hopper, and the residue in the apparatus is discharged at a stretch. On the other hand, the object to be weighed is large,
If the discharge port is likely to cause a bridge, by adjusting the feeding force appropriately within the range where clogging does not occur, the residual object to be weighed can be discharged without stagnation.

In a combination weighing / counting apparatus according to another preferred embodiment of the present invention, the supply means feeds an object to be weighed, and a pool for storing the object to be weighed supplied from the driving feeder. And a hopper, further comprising a feed force parameter setting means for regulating the feed force of each drive feeder, the mode control means, in the weighing mode, the feed force of each drive feeder by the feed force parameter setting means. The weight or the number of objects to be weighed stored in the pool hopper is set to a predetermined input target value, and in the discharge mode, all the pool hoppers and the weighing hoppers are fully opened, and further by the above-mentioned force-feeding parameter setting means. The feeding force of all drive feeders is set to a value larger than that in the above-mentioned weighing mode.

According to this embodiment, when the discharge mode is set, the pool hoppers and the weighing hoppers of all the weighing heads are controlled to the fully opened state, and the feeding force of the drive feeders of all the weighing heads is set by the feeding force parameter setting means. Is set to a larger feeding force than in the weighing mode. As a result, the object to be weighed remaining in the device can be quickly discharged through the fully opened pool hopper and weighing hopper.

In the combination weighing / counting method according to one configuration of the present invention, the objects to be weighed are supplied from a plurality of supply means to a plurality of weighing devices having a weighing hopper, and the objects to be weighed by each weighing device are weighed. This is a combination weighing / counting method in which a measured value or the number obtained from the measured value is combined and calculated to obtain a combination of objects to be weighed within the allowable range. In this method, the weighing mode and the discharge mode are switched and set, and when the weighing mode is set, the combination calculation is performed, and the corresponding supply means is operated in conjunction with the opening / closing operation of the weighing hopper to discharge the discharge mode. When set to, the supply means is operated while the weighing hopper is kept open, and the objects to be weighed remaining in the supply means are continuously discharged to the outside.

According to this method, it is possible to obtain the same effects as those of the combination weighing / counting apparatus according to the above-mentioned one configuration of the present invention.

In a combination weighing / counting method according to another configuration of the present invention, a plurality of supply paths for supplying an object to be weighed from a plurality of supply means to a plurality of weighing devices having weighing hoppers are divided into a plurality of groups. , Weighing objects are put into each group, and the weighing value or the number of pieces obtained from the weighing value of each group is combined and the weight or the number of pieces within the allowable range is set for each group. Is a combination weighing / counting method for obtaining. In this method, the weighing mode and the discharging mode are switched and set, the group to which the discharging mode is to be set is designated, and when the weighing mode is set, the combination calculating means is performed and the opening / closing operation of the weighing hopper is performed. When the discharge mode is set by operating the corresponding supply means according to the above, the corresponding supply means are operated while keeping the weighing hoppers of the specified group in the open state, and the objects to be weighed in the group are moved to the outside. Discharge continuously.

According to this method, the same effects as those of the combination weighing / counting apparatus according to the other configuration of the present invention described above can be obtained.

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway schematic front view showing a combination weighing device according to an embodiment of the present invention. In FIG. 1, the object M to be weighed, which has been conveyed by the conveyor 1, is supplied onto a flat conical dispersion feeder 3 via a charging chute 2. This dispersion feeder 3 is a vibrator 4
The object M to be weighed is dispersed by being vibrated by driving the A plurality of drive feeders 7 each having an exciter 8 are radially arranged around the lower part of the dispersion feeder 3, and a plurality of pool hoppers 9 are individually provided to the respective drive feeders 7 below the tips of the respective drive feeders 7. It is arranged in a circle corresponding to.
Further, a plurality of weighing hoppers 10 are arranged in a circle corresponding to each pool hopper 9 individually. The pool hopper 9 and the weighing hopper 10 are provided with gates 13 and 14 for opening and closing their lower discharge ports.

A combination of the drive feeder 7 and the pool hopper 9 constitutes a plurality of supply means S for supplying the objects to be weighed M to the plurality of measurement hoppers 10. That is,
Each drive feeder 7 supplies the objects to be weighed M received from the dispersion feeder 3 to the corresponding pool hoppers 9 by vibration, and the pool hoppers 9 temporarily pool the introduced objects to be weighed M and then The weighing object M is discharged by opening the gate 13 and supplied to the weighing hopper 10.

The weighing hopper 10 is the weighing hopper 1.
It is supported by a weighing means 11 such as a load cell for weighing the object M in 0, and the weighing hopper 107 and the weighing means 11 form a plurality of weighing devices 12. Below the weighing hopper 10, there is arranged a collecting and discharging chute 17 for collecting the objects to be weighed discharged from the measuring hopper 10 in the central lower part.
Is configured by arranging a plurality of removable upper chute portions 17a in a radial pattern around the fixed lower chute portion 17b. The distribution chute 18 is connected to the lower end outlet of the lower chute portion 17b. The object to be weighed M discharged from the selected weighing hopper 10 described later.
After being collected by the collecting and discharging chute 17, they are supplied to the packaging machine 19 through the sorting chute 18 and are packaged.

The above-mentioned components are supported as follows. That is, the case 23 is supported by the main body frame 21 mounted and fixed on the support base 20 via the plurality of support legs 22, and the charging chute 2, the dispersion feeder 3, and the supply means are provided on the case 23. The S is provided, and the scale 12 is provided on the outer peripheral portion of the case 23. In the case 23, the control units of the pool hopper 9 and the weighing hopper 10, the driving motor, and the like are housed.

FIG. 2 is a block diagram showing the configuration of the control system of the above embodiment. In FIG. 2, the gate driving unit 27 that opens and closes the gate 13 of the pool hopper 9 is controlled by the pool hopper control unit 29, and the gate driving unit 28 that opens and closes the gate 14 of the weighing hopper 10 is controlled by the weighing hopper control unit 30. . Supplying means S for one object to be weighed M, weighing device 12 corresponding thereto and both gate drive parts 27, 2
8 constitutes a weighing head WH, and a plurality of weighing heads WH are radially arranged around the dispersion feeder 3. Sorting drive unit 34 for swinging the sorting chute 18
Is controlled by the distribution control unit 35.

A control device 32 composed of a CPU has a power supply parameter setting means (a kind of supply control means) 33 and a combination calculation means 37 built therein. From the force-transmitting parameter setting means 33, the value of the force-transmitting parameter (for example, the amplitude or vibration time of the driving feeder), that is, the set value of the feeding force of the object M to be weighed is output to the feeder drive control unit 31.
The operation of the drive feeder 7 is controlled so that its feeding force is adjusted.

The control device 32 is controlled by the mode control means 39. The mode control means 39 controls the control means 32 according to the mode set by the mode switching means 38. The mode switching means 38 is manually operated to select between a weighing mode for performing a normal weighing operation and a discharge mode for discharging the object to be weighed M remaining to switch the object to be weighed M to the outside of the apparatus. It is possible to switch and set it.

Next, the operation of the above embodiment will be described. When the operator manually sets the mode switching means 38 to the weighing mode, for example, the mode switching means 38 outputs a weighing mode switching signal c, and the mode control means 39 receiving the switching signal c causes the control device 32. The metering mode signal a is sent to the feeding force parameter setting means 33 and the combination calculating means 37 therein. Receiving the measurement mode signal a, the force-feeding parameter setting means 33 gives a predetermined force-feeding value of each drive feeder 7 to the feeder drive controller 31.
The feeder drive control unit 31 changes the amplitude and the vibration time of the drive feeder 7 of each weighing head WH,
The pooled hopper 9 is supplied with the objects to be weighed, which are supplied via the separately-operated transfer conveyor 1 and the dispersion feeder 3 which are controlled to a given feeding force.

The feeding force of the drive feeder 7 in the weighing mode is such that the weight of the object M in the pool hopper 9 is measured before and after the weighing head WH based on (target weight) / (number of selected combinations). Is set so as to obtain a charging target value with variation, and the weight (measured value) of the object M in the weighing hopper 10 is fed back, and the feeding force is adjusted so that this weight becomes the charging target value. Is adjusted. That is, the feeding force is automatically controlled based on the measured value of the weighing hopper 10 so that the input amount to the measuring hopper 10 matches the input target value.

On the other hand, the combination calculation means 37 is provided for each weighing device 12
Receiving the weighing signal d from the weighing means 11 and performing a combination calculation of the weighing values, and the total weight of the objects M to be weighed in each weighing hopper 10 of the weighing hopper 10 falls within the allowable range with the target value as the lower limit. Select a combination and select the weighing hopper 1
The selection signal e is output to the weighing hopper control unit 30 corresponding to 0, the gate 14 is opened, and the object M to be weighed is discharged.
Next, based on the selection signal e, the pool hopper control unit 29 of the pool hopper 9 corresponding to the selected weighing hopper 10 is actuated with a delay of a certain timing, and the pool of the weighing head WH that has discharged the object to be weighed M is pooled. Gate 13 of hopper 9
Is opened and the weighing object 10 in the pool hopper 9 is supplied to the empty weighing hopper 10.

On the other hand, also based on the selection signal e, the feeder drive control unit 31 of the drive feeder 7 corresponding to the opened pool hopper 9 is actuated, and based on the feeding force parameter set by the feeding force parameter setting means 33. Then, the drive feeder 7 of the weighing head WH is driven to supply the object M to be weighed to the empty pool hopper 9.

Next, the operation in the discharge mode will be described.
When the operator sets the mode switching means 38 to the discharge mode when switching the object to be weighed M, the mode switching means 38 is set.
Mode control means 3 which has received the discharge mode switching signal c from
Reference numeral 9 indicates the discharge mode signal b, and the power transmission parameter setting means 3
3, the combination calculation means 37, the pool hopper control unit 29, the weighing hopper control unit 30, and the distribution control unit 35.
As a result, the combination calculation means 37 stops its operation, and the pool hopper control unit 29 and the weighing hopper control unit 30 hold the gates 13 and 14 of the full weighing head WH in the fully opened state.

At the same time, the feed force parameter setting means 33, to which the discharge mode signal b is input, has a predetermined feed value that is the maximum feed force within the range where clogging does not occur in the state where the gates 13 and 14 are fully opened. It is fixedly set, and the entire drive feeder 7 is controlled via the feeder drive control unit 31. As a result, the objects to be weighed M remaining on the transport conveyor 1 and the dispersion feeder 3 in FIG. 1 continuously pass through the pool hopper 9 and the weighing hopper 10 in the open state, and are quickly transferred to the collective discharge chute 17. Is discharged. At this time, the distribution control unit 35 that has received the discharge mode signal b changes the distribution drive unit 34.
Is controlled to switch the sorting chute 18 from the packaging machine 19 side to the collection side A as shown by the chain double-dashed line in FIG. 1. Therefore, the discharged object M is shaken. It is recovered and reused via the minute chute 18. Also,
Since the gates 13 and 14 are held in the fully opened state, the opening / closing noise unlike the conventional case does not occur and the noise is remarkably reduced.

When the discharge of the remaining object to be weighed M is completed, the necessary portion is washed or cleaned, and then the mode switching section 38 is returned to the weighing mode to start the combined weighing of the next object to be weighed M. . As described above, since the remaining object to be weighed M can be discharged quickly, the time required to start the combined weighing of the next object to be weighed M can be significantly shortened as compared with the conventional case. The operating rate is improved. When the packaging machine 19 is a vertical pillow type, the residual weighing object may be flown directly to the packaging machine 19 in the discharge mode without disposing the distribution chute 18. At this time, the bottom of the bag during bag making is broken, and the film formed into a cylindrical shape is used as a discharge chute to collect the residual object to be weighed.

FIG. 3 is a partially cutaway schematic front view showing a combination weighing device according to another embodiment of the present invention. In this combination weighing device, all weighing heads are divided into a plurality of groups, and in each group, a combination calculation is independently performed to individually find a combination within an allowable range, and each obtained object to be weighed is grouped. It is a type which discharges independently or mixes and discharges. In this embodiment, the case where two kinds of objects to be measured M ₁ and M ₂ are mixed is illustrated.

That is, a partition plate 40 for separating the two kinds of objects M ₁ and M ₂ to be weighed and supplying them to the dispersion feeder 3 is arranged on the dispersion feeder 3 in FIG. The weighed articles M ₁ and M ₂ are divided into two separate chute sections 2 ₁ of the feeding chutes 2 from the individual conveyors 1 ₁ and 1 ₂ .
It is supplied onto the dispersion feeder 3 separated by the partition plate 40 through the 2 _2. The drive feeder 7 and the pool hopper 9 are respectively provided, for example, 14 each, and these 14 supply means 7 and 9 supply two kinds of objects M ₁ and M ₂ to the 14 measurement hoppers 10. 14 supply paths are formed. Seven supply paths are assigned to each of the objects to be weighed M ₁ and M ₂ .

The partition plate 40 constitutes a group dividing means which divides these 14 supply paths into two groups each having supply means S ₁ and S _2. Supply means S ₁ , S _{2 of one} group
From the above, different types of objects to be weighed M ₁ and M ₂ are supplied to the two groups of weighing devices 12 ₁ and 12 ₂ . The transfer conveyors 1 ₁ and 1 ₂ and the corresponding divided chute units 2 ₁ and 2
₂ and ₂ constitute the object-to-be-measured inputting means P for charging the objects M ₁ and M ₂ of different types into the two groups.

The objects to be weighed M ₁ and M ₂ weighed by the weighing hoppers 10 of the two groups are transferred to the corresponding booster hoppers 43, and the weighed hoppers 10 which have become empty are again fed to the objects to be weighed M _1. , M ₂ is supplied. For each group, a combination calculation is performed on all the hoppers including the weighing hopper 10 and the booster hopper 43, and the objects to be weighed M ₁ and M ₂ of each group discharged from the hoppers selected by this combination calculation are individually calculated. collecting chute 41 _1, 41 individually after being set at _2, each of the distribution chute 18 _1, 18
It is supplied to the packaging machine 19 through ₂ Each gathering shoot 4
Each of 1 ₁ and 41 ₂ is configured by arranging an upper-stage chute portion 41a, a middle-stage chute portion 41b, and a lower-stage chute portion 41c, which are in a semi-conical shape, in a communicating state in order from the upper side, and inside the upper-chute portion 41a Is provided with a booster hopper 43 for temporarily storing the objects to be weighed M ₁ , M ₂ discharged from the weighing hopper 10.

In the weighing mode, each of the distribution chutes 18 ₁ and 18 ₂ is swung so that the discharging direction is toward the packaging machine 19. In the discharging mode, each of the sorting chutes 18 ₁ and 18 ₂ is independently, as shown by a chain double-dashed line, It is swung so as to face the collection sides A ₁ and A ₂ .

FIG. 4 is a block diagram showing the configuration of the control system of the above embodiment. In FIG. 4, a plurality of weighing heads W
The H is divided by the group dividing means 40 into two groups each including the drive feeder 7, the pool hopper 9, the weighing hopper 10, and the booster hopper 43. For the weighing heads WH ₁ and WH ₂ belonging to each group, pool hopper control units 29 ₁ and 29 ₂ , weighing hopper control units 30 ₁ and 30 ₂ , booster hopper control units 46 ₁ and 46 ₂ , and feeder drive control, respectively. Parts 31 ₁ , 3
1 ₂ are provided. Further, one control device 32 ₁ and 32 _{2 for} each group and distribution drive units 34 ₁ and 34 _{2 are provided.}
And distribution control units 35 ₁ and 35 ₂ are provided.

In addition to the mode switching means 38, the group designating means 48 is also connected to the mode control means 39. The group designating unit 48 outputs a group designating signal g to designate the ejection mode signal b from the mode control unit 39 when a group for which the ejection mode is to be set is designated by an external operation, for example. It controls so that it may go to the control devices 32 ₁ and 32 ₂ of another group.

Next, the operation of the above embodiment will be described. When the operator manually sets the weighing mode by the mode switching means 38, for example, the weighing mode signal a is sent from the mode control means 39 to the respective control devices 32 ₁ and 32 ₂ , and the respective control devices 32 ₁ and 32 ₁ , 32 ₂ respectively controls the corresponding weighing heads WH ₁ and WH ₂ in the same manner as described with reference to FIG.

That is, the respective feeding force parameter setting means 33, 33 of the control devices 32 ₁ , 32 ₂ use the feeding force values individually set in advance as the corresponding feeder driving means 31 ₁ , 31.
₂ to control the drive feeders 7, 7. On the other hand, each combination calculation means 37, 37 receives the weighing signals d1, d2 from the weighing instruments 12, 12 belonging to the corresponding group,
The weights of the objects to be weighed and the weights of the objects to be weighed transferred to the booster hopper 43 (weighing signals from the weighing devices 12 and 12 one time before) are combined and calculated, and each group falls within an allowable range. A combination of the weighing hopper 10 and the booster hopper 43 is selected, and the gate 14 of the selected weighing hopper 10 is connected to the gate driving unit 28 via the weighing hopper control units 30 ₁ and 30 _2.
The gate 44 of the booster hopper 43 which is opened by ₁ , 28 _{2 and is} selected at the same time is also connected to the booster hopper control unit 46.
It is opened by the gate drive unit 45 via ₁ , 46 ₂ .

The objects to be weighed M ₁ and M ₂ discharged from the weighing hoppers 10 and booster hoppers 43 of both groups are collecting chutes 41 ₁ and 41 ₂ and sorting chutes 18 ₁ and 18.
After being mixed via ₂ , it is supplied to the packaging machine 19.
The distribution chutes 18 ₁ and 18 ₂ may be connected to different packaging machines and the objects to be weighed M ₁ and M ₂ in each group may be supplied to different packaging machines.

Next, the operation in the discharge mode will be described. The mode switching means 38 sets the ejection mode, and the group designation means 48 first designates one of the groups. Accordingly, sent from the mode control unit 39 only in the discharge mode signal b is one of the control device 32 _1, the control unit 32 _1, the pool hopper 9 of the corresponding metering head WH _1, weighing hoppers 10 and booster hoppers 4
3 is held fully open as described in FIG. As a result, the objects to be weighed M ₁ remaining on the conveyor 1 ₁ and the dispersion feeder 3 and the like are continuously discharged through the pool hopper 9 and the weighing hopper 10 which are held in the fully opened state, and are quickly discharged. In addition, booster hopper 43
The objects to be weighed inside are also discharged.

After the operator visually confirms that the discharge of the object to be weighed M ₁ is completed, the other group is designated by the group designating means 48, and similarly, the object to be weighed M ₂ is held in the fully opened state. The head WH ₂ continuously passes through the pool hopper 9 and the weighing hopper 10 and is quickly discharged, and at the same time, the objects to be weighed in the booster hopper 43 are also discharged. At this time, the distribution chutes 18 ₁ and 18 ₂ of the designated group receiving the discharge mode signal b are driven by the distribution drive unit 34 operated by the distribution control units 35 ₁ and 35 ₂ receiving the discharge mode signal b. , The wrapping machine 19 side is switched to the collection side A ₁ , A _{2 in} FIG. Therefore, the two types of objects to be weighed M ₁ and M ₂ are separately collected and reused without being mixed.

Instead of continuously switching the two groups to the discharge mode as described above, it is possible to switch only one of the groups to the discharge mode. In that case, the group designating unit 48 designates only one of the groups. For example, if you specify the first group,
Only the control device 32 _{1 of} this group has the discharge mode signal b.
Is sent out, and the control device 32 ₁ controls the weighing head WH ₁ in the same manner as described above to promptly discharge the object to be weighed M ₁ . The control device 32 ₂ of the other group holds the drive stopped state because neither the weighing mode signal a nor the discharge mode signal b is input.

Therefore, since the objects to be weighed M ₂ remain in the supply route belonging to the other group, preparation for supplying the objects to be weighed M _{2 at} the time of the next combination weighing becomes unnecessary and the operating rate is improved. You can On the other hand, in the conventional apparatus, when the discharge mode is set, there is a waste of discharging all types of objects even if only some of the objects to be weighed are switched. .

The present invention can be applied to the case where one device is divided into three or more groups in order to handle three or more kinds of objects to be weighed.

Further, in each of the above-described embodiments, the case where the combination within the allowable range is obtained by using the weight of the object to be weighed as a measured value has been described, but there is no great variation in individual weights such as snacks and candy. For objects to be weighed,
It is also possible to set the number within the allowable range, convert the measured weight into the number, and select the combination in which the number is within the allowable range.

Further, the plurality of supply means S, S ₁ and S ₂ for supplying the objects to be weighed to the plurality of weighing hoppers 10 are composed of the drive feeder 7 and the pool hopper 9. The supply means is not limited, and may be, for example, a supply means without a pool hopper.

[0052]

As described above, according to the present invention,
When the device is set to the discharge mode when changing the type of the object to be weighed, each weighing hopper is held in the open state and the supply means is continuously driven, so that the remaining weighing object is weighed in the open state. Since it passes through the inside of the hopper and is quickly discharged to the outside of the apparatus, it is possible to quickly shift to the next combination weighing of the objects to be weighed, so that the operation rate of the apparatus is improved. Further, since the weighing hopper is held in the open state, the opening / closing sound of the hopper is not generated, the noise is remarkably reduced, and the working environment is improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway schematic front view showing a combination weighing device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a control system of the same embodiment.

FIG. 3 is a partially cutaway simplified front view showing a combination weighing device according to another embodiment of the present invention.

FIG. 4 is a block diagram showing a control system of the same embodiment.

[Explanation of symbols]

7 ... Drive feeder, 9 ... Pool hopper, 10 ... Weighing hopper, 11 ... Weighing means, 29, 29 ₁ , 29 ₂ ... Hopper opening / closing control means, 33 ... Sending parameter setting means (supply control means), 37 ... Combination calculation Means (arithmetic means), 38 ... Mode switching means, 39 ... Mode control means, 40 ... Partition plate (group dividing means), 48 ... Designating means, M, M ₁ , M
₂ ... objects to be _{weighed, S, S 1, S 2} ... supply means, P ... objects to be weighed dosing _{means, WH, WH 1, WH 2} ... metering head.

Claims (7)

[Claims] 1. A plurality of weighing devices for accommodating an object to be weighed in a weighing hopper, a plurality of supply means for supplying the object to be weighed to each weighing hopper, and an object to be weighed by each weighing device. Combination calculation means for obtaining a combination of the measured value or the number obtained from the measured value to obtain an object to be weighed with a weight or number within the allowable range, and a mode switching means for switching and setting the weighing mode and the discharge mode, When the weighing mode is set, the combination computing means is operated, and the corresponding feeding means is operated in conjunction with the opening / closing operation of the weighing hopper, and when the discharging mode is set, the weighing hopper is opened. And a mode control means for continuously discharging the objects to be weighed remaining in the supply means to the outside of the apparatus while being held in the state. 2. A plurality of scales for accommodating and weighing the objects to be weighed, a plurality of supply means for supplying the objects to be weighed to the respective weighing hoppers, and a plurality of supply devices from these supply means to the weighing hopper. The group dividing means for dividing the supply path into a plurality of groups, the weighing object loading means for loading the weighing object in each group, and the weighing value obtained by the weighing machine of each group or the number obtained from the weighing values Combination calculation means for obtaining a combination of objects to be weighed within a permissible range or weight for each group, mode switching means for switching and setting the weighing mode and discharge mode, and the discharge mode set by the mode switching means When the weighing mode is set, the means for designating the group to be operated and the combination operation means are operated, and the operation is linked with the opening / closing operation of the weighing hopper. When the discharge mode is set by operating the supply means, the corresponding supply means is operated while the weighing hoppers of the designated group are held in the open state, and the objects to be weighed in the group are moved to the outside of the device. A combination weighing / counting device having a mode control means for continuously discharging. 3. The feed force of each of the supply means is controlled based on a measured value when the metering mode is set, and the feed force is set when the discharge mode is set. A combination weighing / counting device comprising a supply control means for controlling a preset predetermined value. 4. The feed force parameter setting means according to claim 1, further comprising feed force parameter setting means for regulating feed force of each of the drive feeders, wherein the feeding means includes a drive feeder for feeding an object to be weighed.
And a pool hopper for storing the objects to be weighed supplied from the drive feeder, wherein the mode control means stores the feed force of each drive feeder in the pool hopper by the feed force parameter setting means in the weighing mode. The weight or number of objects to be weighed is set to a predetermined target value, all pool hoppers and weighing hoppers are fully opened in the discharge mode, and the feed force of all drive feeders is set by the feed force parameter setting means. Is a combination weighing / counting device for setting to a value larger than that in the weighing mode. 5. The power supply parameter setting means according to claim 2, further comprising a feeding force parameter setting means for regulating a feeding force of each of the driving feeders, wherein the feeding means includes a driving feeder for feeding an object to be weighed.
And a pool hopper for storing the objects to be weighed supplied from the drive feeder, wherein the mode control means stores the feed force of each drive feeder in the pool hopper by the feed force parameter setting means in the weighing mode. The weight or the number of objects to be weighed is set to a predetermined target value, the pool hoppers and weighing hoppers of the specified group are fully opened in the discharge mode, and further specified by the above-mentioned force parameter setting means. A combination weighing / counting device for setting the feeding force of the drive feeders of the selected group to a value larger than that in the weighing mode. 6. An object to be weighed is supplied from a plurality of supply means to a plurality of weighing devices each having a weighing hopper, and the weighed values of the objects to be weighed by each weighing device or the number obtained from the measured values are combined and calculated. This is a combination weighing / counting method for obtaining a weighed object with a combination of weight or number within the allowable range by switching between the weighing mode and the discharge mode, and when the weighing mode is set, the above combination calculation is performed. At the same time, the corresponding supply means is operated in association with the opening / closing operation of the weighing hopper, and when the discharge mode is set, the supply means is operated while the weighing hopper is held in the open state and remains in the supply means. Combined weighing and counting method that continuously discharges the measured objects to the outside. 7. A plurality of supply paths for supplying the objects to be weighed from a plurality of supply means to a plurality of weighing devices having weighing hoppers are divided into a plurality of groups, and the objects to be weighed are introduced into each group, Combined weighing that obtains a combination of the measured values obtained from the above measuring instruments of the group or the number obtained from the measured values to obtain a combination of weights or numbers within the allowable range for each group.
The counting method is such that the weighing mode and the discharging mode are switched and set, the group to which the discharging mode is to be set is designated, and when the weighing mode is set, the combination calculation means is performed and the opening / closing operation of the weighing hopper is performed. When the corresponding supply means are operated in conjunction with each other and the discharge mode is set, the corresponding supply means are operated while holding the weighing hoppers of the specified group in the open state to remove the objects to be weighed in the group. A combined weighing and counting method that continuously discharges to the outside.