JP2568977Y2 - Combination scale - 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 weigher in which a plurality of hoppers are grouped into a predetermined number of sets, and a predetermined number of weighing units are provided in units of the groups.

[0002]

2. Description of the Related Art Although not shown in the drawings, there is a conventional combination weigher having one umbrella-shaped dispersion feeder at the top of a main body of the combination weigher. This dispersion feeder radially disperses the articles supplied to a predetermined position on the upper surface, and supplies the articles onto, for example, 10 linear feeders provided on the main body of the combination weigher along the outer periphery of the dispersion feeder. . The articles supplied to the ten linear feeders are provided in correspondence with the respective linear feeders.
The articles are supplied to and held by the supply hoppers, and the articles supplied to the respective supply hoppers are supplied to the weighing hoppers provided below the corresponding supply hoppers. The articles supplied to each weighing hopper are weighed by the weighing hopper. Then, the weighing values of the articles in each weighing hopper are combined and operated by a central processing unit (hereinafter, referred to as a CPU), and a combination having a desired total weight is selected. It is discharged from the weighing hopper in which the articles having the weighing values are stored. As a result, an article having a desired weight is weighed by the combination weigher and transported to a predetermined place.

An example of the electrical configuration of the combination weigher will be described with reference to a block diagram shown in FIG. This combination weigher
As shown in FIG. 5, ten measuring units 1 to 10 (three measuring units 1, 2, and 10 are shown in the figure), one control unit 11, and one remote control unit 12 ( Hereinafter, it is referred to as RCU12) and one A
A C power supply unit 13 is provided, and straight-line feeders 14 to 23 (three straight-line feeders 14, 15, and 23 are shown in the figure) are provided one by one in each of the ten weighing units 1 to 10. Have been.

Each of the weighing units 1 to 10 opens and closes one supply hopper (not shown) and each gate provided on one weighing hopper (not shown) corresponding to the supply hopper. Stepping motors (1a,
1b) to (10a, 10b) and one load cell 1c for weighing the articles supplied to the weighing hopper
To 10c.

The control unit 11 includes a total of 20 drive units 24 for driving each gate of 10 supply hoppers and 10 weighing hoppers, and 10 load cells 1c to 10
c, an A / D converter 26 for converting an analog weighing signal sent from each load cell into a digital weighing signal via the multiplexer 25, and ten linear feeders 14 to 23. And ten driving units 27 for driving. Further, the control unit 11 includes a CPU 30. This CPU
Numeral 30 denotes a weighing hopper for variously combining digital weighing signals converted by the A / D converter 26, selecting a combination having a total weight of a desired weight, and storing articles having weighing values constituting the selected set. Is supplied to the corresponding drive unit to open and close the gate. Further, the CPU 30 supplies a drive signal to each drive unit of the corresponding linear feeder and supply hopper in order to supply the articles to these weighing hoppers. Further, a transformer 28 for converting electric power supplied from the AC power supply unit 13 into a predetermined voltage and a DC power supply unit 29 are also provided.

[0006] The RCU 12 is connected to the CPU 30, and is a key for inputting predetermined data to the CPU 30.
A display unit for displaying data output from the CPU 30 is provided. Then, as shown in FIG. 5, each of the stepping motors (1a, 1b) to (10a, 10b) and the drive unit 24 are connected to a connection wire and connectors (1d, 1e) to (10d, 10e). Similarly, each of the load cells 1c-1
0c, the multiplexer 25, and the respective linear feeders 1
4 to 23 and the drive unit 27 are electrically connected to each other through connection wires and connectors (1f to 10f) and (1g to 10g) provided in the middle thereof.

[0007]

The above-mentioned conventional combination weigher has a single CPU 30 provided in the combination weigher main body.
Controls the respective drive units 24 and 27. Therefore, even when adjusting or repairing one of the adjustments such as the span adjustment of the load cell, the amplitude adjustment of the rectilinear feeder, and the opening adjustment of the gate of the supply hopper or the weighing hopper,
It is necessary to stop the operation of the combination weigher until the adjustment or repair of the portion is completed, and there is a problem that the operating rate of the combination weigher is reduced. As a result, there is a problem that the operating ratio of a combination weigher to which a larger number of supply hoppers and the like are attached is reduced due to adjustment of each portion. And
Since one A / D converter 26 converts an analog weighing signal input from each of the load cells 1c to 10c via the multiplexer 25 into a digital weighing signal,
If one of the A / D converters 26 fails, the combination weigher cannot be operated until the A / D converter 26 is repaired or replaced.

As shown in FIG. 5, each of the stepping motors (1a, 1b) to (10a, 10b) and the drive unit 24, each of the load cells 1c to 10c, the multiplexer 25, and the like are provided in the middle of the connection wire. Connectors (1d, 1e, 1f) to (10d, 10e,
10f), the two connectors are electrically connected to each other. For example, when two or more components such as a stepping motor and a load cell are removed from the combination weigher, it is necessary to remove the connection of each connector to be connected. When a stepping motor or the like is attached, it takes time to connect the detached connectors.
Further, there is another problem that care must be taken to connect the corresponding plugs (males) of the connectors and corresponding ones of the receptacles (females) without mistake.

Further, for example, when the stepping motor 1a is connected to the drive section 24 provided on the main body side, first, the receptacle of the connector 1a attached to the connection wire led out from the drive section 24 is pulled out. A connector 1a attached to the receptacle and a connecting wire derived from the stepping motor 1a.
Therefore, it is necessary to considerably lengthen the length of the connection wire derived from the drive unit.
For this reason, a space is required for the connecting wires to be accommodated in the main body when the stepping motor 1a is mounted on the main body. There is a problem of getting in the way.

The respective stepping motors, load cells and connectors are grouped into respective weighing units as shown in FIG. 5, but when the weighing units are removed from the main body of the combination weigher, these stepping motors and the like are exposed. And there is a problem that the measuring unit may be damaged when stored or transported.

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

[0012]

[0013]

According to a first aspect of the present invention, there is provided a combination weigher having a plurality of weighing units and a command unit for instructing the weighing units to operate and performing a combination operation. units are paired in the instruction unit
And a hopper that can be freely attached and detached, and constitutes one set of a plurality of hoppers provided in the combination weigher divided into sets corresponding to the number of the weighing units. Re et al provided for one set of the hopper
And A click <br/> Chueta for opening and closing a gate provided in the hopper, the load cell is provided for the one set of the hopper, provided corresponding to the one set
The weighing unit corresponding to the set is transferred to the command unit.
Attached to the weighing unit in the attached state
The corresponding gate is adjusted by the actuator.
The analog weight signal outputted from the upper SL load cell to drive control so as to open and close the mouth amount into a digital weighing signal and outputs it to the instruction unit, the upper the metering unit
Attached to the weighing unit with the unit removed from the command unit.
Adjustment of the opening of the gate,
Adjust the span of the cell independently for each weighing unit.
And a control unit capable of controlling the
Of each of the above weighing units attached to the command section
Read the digital weighing signal from the control unit and perform the combination operation
It is characterized in that it is configured to perform .

According to a second aspect of the present invention, in the combination weigher according to the first aspect, connection wires for electrically connecting the plurality of control units and the command unit are grouped for each control unit, and the grouping is performed. A connector that enables the bundle of the respective connection wires to be changed between the connected state and the non-connection state in a lump is interposed in the middle of the respective bundles of the connection wires.

According to a third aspect of the present invention, in the combination weigher according to the second aspect, each of the weighing units is detachably attached to a main body of the combination weigher, and the connector is mounted with the weighing unit attached to the main body. The receptacle and the plug are electrically connected to each other, and the receptacle and the plug are electrically disconnected from each other with the measuring unit removed from the main body so that the receptacle and the plug are electrically disconnected from each other. It is provided at a predetermined position on the unit side, and the plug is provided at a predetermined position on the measuring unit side or the main body side.

According to a fourth aspect of the present invention, in the combination weigher according to the first, second or third aspect, each of the weighing units is covered with a separate cover.

[0017]

[0018]

According to the first aspect of the present invention , a control unit is provided for each of a plurality of weighing units, and each of these control units is a linear feeder for supplying articles to, for example, a hopper provided in the weighing unit to which the control unit belongs. Adjust the hopper gate ,
In addition to controlling the drive of an actuator such as a stepping motor that opens and closes according to the opening amount, the analog weighing signal output from the load cell is converted into a digital weighing signal corresponding to the weight value of the weighed article and output to the command unit. The command unit processes digital weighing signals sent from the control unit, and instructs these weighing units to operate according to the processing results and the like. Therefore, when adjusting or repairing any of the actuators provided in the combination weigher, or when performing the span adjustment of the load cell, remove the weighing unit to which the actuator or the load cell belongs from the combination weigher main body, and control the control unit, as well as to the a effectuator <br/> eta adjustment or repair, or span adjustment of the load cell. Even remove certain metering unit for adjustment, it is possible to perform combination weighing by the remaining metering unit mounted to the body of the assembled combined balance.

In the first invention, since the control unit is provided for each weighing unit, the control unit is not provided for each weighing unit but compared to the case where the control unit is provided for the command unit. The number of connection wires connecting the weighing unit and the command unit can be reduced. Thus, according to the second invention , a connector that enables a bundle of connection wires for electrically connecting the weighing unit and the command unit to be collectively changed between a connection state and a non-connection state is provided. Can be interposed in the middle of the bundle. Therefore, by attaching and detaching a connector provided in a certain weighing unit, a bundle of connection wires of the weighing unit can be collectively connected or disconnected.

According to the third aspect of the present invention , with the measuring unit attached to the main body of the combination weigher, the receptacle and the plug constituting the connector provided for the weighing unit are electrically connected, and the weighing unit is connected. In a state where the plug is removed from the main body of the combination weigher, the receptacle and the plug constituting the connector provided for the weighing unit are electrically disconnected.

According to the fourth invention, since each weighing unit is covered by a separate cover, when the weighing unit is removed from the combination weigher, parts such as the actuator in the removed weighing unit are externally provided. Can be protected from impact.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A combination weigher according to an embodiment of the present invention comprises one dispersion feeder, 10 linear feeders, 10 supply hoppers, and 10 supply hoppers provided in the combination weigher described in the prior art. Equivalent to a weighing hopper and ten load cells supporting these weighing hoppers. Therefore, detailed description of these operations and functions will be omitted. However, the combination weigher of this embodiment has a main body 31 of the combination weigher.
And ten weighing units 32 radially attached to the main body 31, and these ten weighing units 3
2 and one remote control unit 33 (hereinafter, referred to as RCU 33) for instructing operation. The RCU 33 is attached to the outside of the main body 31 of the combination weigher, and the RCU 33 is a command unit according to claim 1 . And each weighing unit 32
Are all equivalent, so that one weighing unit 32
I will explain.

The measuring unit 32 is, as shown in FIG.
An outer diameter is provided with a substantially rectangular parallelepiped unit frame 34,
One supply hopper (not shown) is mounted on the left side surface of the unit frame 34, that is, on the side serving as the outer peripheral surface of the combination weigher, and one weighing hopper (not shown) is mounted below the supply hopper. The weighing hopper is supported by a load cell 35 fixedly attached to the unit frame 34, as shown in FIG. The gate (not shown) of the supply hopper is opened and closed by a stepping motor 37 via a link mechanism 36 shown in FIG. 2, and the gate (not shown) of the weighing hopper is driven via a link mechanism 38 shown in FIG. 39 is driven to open and close. The two link mechanisms 36 and 38 and the two steppers 37 and 39 are provided in the unit frame 34. A control unit 40 that controls the driving of these two stepping motors 37 and 39 and converts an analog weighing signal output from the load cell 35 into a digital weighing signal is also provided in the unit frame 34. A cover 41 is attached to the weighing unit 32 to protect the control unit 40 and the like provided inside from an external impact. One dispersion feeder (not shown) and ten linear feeders (not shown) are provided above the main body 31 of the combination weigher.

Next, the electrical configuration of the combination weigher will be described with reference to the block diagram shown in FIG. This combination weigher
As described above, the ten weighing units 32 (two in the figure)
1 shows a weighing unit 32. ) And one RCU 33
And one AC power supply unit 42, and each of the ten weighing units 32 is provided with one straight feeder 43 in parallel.

Each of the weighing units 32 includes two stepping motors 37 and 39 for opening and closing respective gates of the supply hopper and the weighing hopper provided for the weighing unit 32, a load cell 35, and a control unit 40. And The control unit 40 includes stepping motors 37, 3
9 and two driving units 44 and 45 for driving the load cell 3
An A / D converter 46 for converting an analog weighing signal sent from the weighing unit 5 into a digital weighing signal;
And one driving unit 47 for driving one linear feeder 43 provided for the two. Further, the control unit 40 supplies a control signal to each of the driving units 44, 45, and 47, and also converts the digital weighing signal converted by the A / D converter 46 into a digital weighing signal corresponding to the weight value of the weighed article. SUB adjusted to RCU33 and output to RCU33
A CPU 48 (sub central processing unit) is provided. Further, a transformer 50 and a DC power supply (not shown) connected to the AC power supply 42 via the connector 49 are also provided.

As shown in FIG. 1, the RCUs 33 are provided in respective SUBCs provided in each of the ten weighing units 32.
It is connected to the PU 48 and stores predetermined data in SUBCP
A key for inputting to the U48 and a display unit for displaying data output from the SUBCPU 48 are provided. The RCU 33 also includes a CPU. This CP
U variously combines the digital weighing signals sent from the respective SUBCPUs 48, selects a combination having a desired total weight, and discharges the articles of the weighing values constituting the selected set from the corresponding weighing hopper. SUBCP for
A command signal is transmitted to U48. Further, the CPU transmits to the SUBCPU 48 a command signal for operating the linear feeder 43 and the drive unit 44 of the supply hopper for supplying the articles to the weighing hoppers.

As shown in FIG. 1, one connector 49 is provided for each weighing unit 32.
The RCU 33 is the SUB of each of the ten weighing units 32.
It is electrically connected to the CPU 48 via a connection wire and the connector 49 provided on the way. Similarly, the AC power supply unit 42 is connected to the transformers 50 and the connection wires and the connectors 4
9 are electrically connected. Further, ten linear feeders 43 provided on the main body 31 side of the combination weigher are provided.
Are also electrically connected to the corresponding drive units of the weighing unit 32 via the connection wires and the connector 49, respectively.

The mounting structure of the weighing unit 32 to the combination weigher main body 31 will be described with reference to FIGS.
As shown in FIG. 2, each weighing unit 32 includes a guide 51
The main body 31 is attached to the main body 31 of the combination weigher via a guide, and can be moved toward the outside of the main body 31 (left side in FIG. 3) by being guided by the guide portion 51 as shown in FIG. Can be removed from the main body 31.

The guide section 51 comprises a movable section 52 and a fixed section 53 as shown in FIG. Movable part 52
Is fixedly provided on the lower surface of the bottom plate of the weighing unit 32, and an upper constricted portion 54 provided along the fixed portion 53.
And a lower flange 55. The fixing part 53 is
It comprises two flat plates 56 which are parallel to each other at a predetermined interval and extend in the radial direction from the center of the combination weigher, and a support member 57 for fixing the two flat plates 56 to the main body 31 for fixing.

FIG. 2 is a sectional view showing a state in which the measuring unit 32 is attached to the main body 31. Weighing unit 32
Are mounted on the two flat plates 56 of the fixing portion 53,
The constricted portion 54 of the movable portion 52 is located in the gap between the two flat plates 56, and the lower flange 55 is located below the two flat plates 56. The lower edge of the side plate on the front surface (left side in the drawing) of the weighing unit 32 is engaged with the edge of the main body 31. In this state, the measuring unit 32 is fastened to the main body 31 by bolts (not shown). Weighing unit 3
2 is detached from the main body 31, first, a bolt fastening the measuring unit 32 to the main body 31 is removed, and FIG.
Is manually pulled out to the left side of the figure. At this time, as shown in FIG. 3, the weighing unit 32 can be moved while sliding on the two flat plates 56. At this time, the constricted portion 54 of the movable portion 52 is inserted into the gap between the two flat plates 56. Since the weighing unit 32 is guided along the two flat plates 56, the weighing unit 32 can be moved outward and straight along the two flat plates 56. Moreover, since the lower flange 55 is located below the two flat plates 56, the right side of the bottom surface of the weighing unit 32 is lifted, so that the weighing unit 32 does not come off the main body 31. it can. When the weighing unit 32 is further moved from the position shown in FIG. 3 to the left in the figure, the movable portion 52 comes off the opening at the left end of the fixed portion 53, and the weighing unit 32 can be removed from the main body 31. When attaching the detached weighing unit 32 to the main body 31, the procedure is the reverse of that for detaching.

Next, a connector 49 (2) for electrically connecting the control unit 40 of the weighing unit 32 to the RCU 33, the AC power supply unit 42 and the rectilinear feeder 43 on the main body 31 side.
(4 pin) mounting structure will be described. Connector 4
Reference numeral 9 denotes a plug 58 and a receptacle 5 as shown in FIG.
It consists of nine. As shown in the figure, a plug 58 is attached to the lower portion of the right side of the weighing unit 32 toward the center of the main body 31. The plug 58 includes a transformer 50, a SUBCPU 48, and a linear feeder 43.
Is connected to the connection wire derived from the drive unit 47 of the first embodiment.
The upper and lower portions of the plug 58 are provided with two projections 60 as shown in FIG. Receptacle 59
Is attached to the right end of the flat plate 56 of the fixed portion 53 provided in the main body 31, and the receptacle 59 is connected to connection wires derived from the AC power supply unit 42, the RCU 33, and the straight feeder 43. The two protrusions 6 of the plug 58 are provided on the upper and lower parts of the receptacle 59.
A through hole 61 into which 0 can be inserted is formed.

FIG. 3 shows a state in which the plug 58 and the receptacle 59 have come off. When the two are combined from this state to be electrically connected, the weighing unit 32 is moved to the center side of the main body 31 along the fixing portion 53 of the guide portion 51. When the weighing unit 32 moves to the position shown in FIG.
The two projections 60 of the plug 58 fit into the two through holes 61 of the receptacle 59, and the plug 58 and the receptacle 5
The alignment of 9 is automatically performed, and the plug 58 and the receptacle 59 are connected to be in an electrically connected state. That is, by attaching the weighing unit 32 to the combination weigher main body 31, the plug 58 and the receptacle 59 can be simultaneously connected. In this way, all the weighing units 32 or the plurality of weighing units 32 are combined with the main body 3 of the combination weigher.
When the combination weigher is mounted on the combination weigher 1, the operator can operate the combination weigher by operating the RCU 33.

When the combination weighing cannot be performed properly because the opening of the gate of a certain weighing unit 32 becomes defective, for example, the combination weigher is temporarily stopped and the weighing unit 32 is removed from the main body 31. The combination weighing can be continued by the remaining weighing units 32 attached to the combination weigher. Then, if a separately prepared RCU 33 and a power supply unit are connected to the removed measuring unit 32, the opening amount of the gate of the measuring unit 32 can be adjusted to an appropriate opening amount. That is, each weighing unit 32 has a function of controlling the driving of the gate, a function of converting the analog weighing signal of the load cell 35 into an appropriate digital weighing signal corresponding to the weight value, and the function of the linear feeder 4.
Since the control unit 40 having the function of controlling the driving of the control unit 3 is provided, by adjusting the control unit 40, it is possible to adjust, for example, the opening amount of the gate. Then, if the adjusted weighing unit 32 is attached to the combination weigher, the weighing unit 32 can be operated in the adjusted state. When a certain weighing unit 32 becomes defective, the supply of articles to the weighing unit 32 is stopped without removing the defective weighing unit 32 from the main body 31 as described above. The combination weighing can also be performed by supplying the articles to the normal weighing unit 32.

However, each of the weighing units 32 of the above embodiment is used.
Of the two stepping motors 37 and 39
And a function of controlling the driving of the linear feeder 43 and a function of converting an analog weighing signal output from the load cell 35 into a digital weighing signal and adjusting the digital weighing signal to a digital weighing signal corresponding to the weight value of the weighed article. The control unit 40 may have a function of controlling the driving of the two stepping motors 37 and 39 and the linear feeder 43 without having a function of adjusting the digital weighing signal. In this case, the function of converting the analog weighing signal output from the load cell 35 into a digital weighing signal and adjusting the digital weighing signal to a digital weighing signal corresponding to the weight value of the weighed article is provided by the RCU 33.
To have.

In the above embodiment, one connector 49 is provided for each weighing unit 32, as shown in FIG. 2, but a plurality of connectors can be provided for each weighing unit 32. That is, a plurality of plugs are provided on the right side wall of the weighing unit 32 shown in FIG. 2, and a plurality of receptacles corresponding to the plugs are provided at opposing positions on the main body 31 side. The plurality of connectors provided in this manner are connected to the weighing unit 32 in the main body 31 similarly to the above embodiment.
When the measuring unit 32 is detached from the main body 31, the plurality of connectors 49 are disconnected.

Also, the plug 58 of the connector 49 is provided on the measuring unit 32 and the receptacle 59 is provided on the main body 31 side.
The receptacle 59 may be provided on the measuring unit 32 provided on one side.

Further, in the above embodiment, one linear feeder 43, one supply hopper and one weighing hopper constitute one set, and one weighing unit 32 corresponds to one set. The two linear feeders 43, the two supply hoppers, and the two weighing hoppers can be combined into one set, and one set can correspond to one weighing unit.
However, one SUBCPU is provided in one weighing unit, and the SUBCPU controls driving of a stepping motor and the like provided in the unit and adjusts a digital weighing signal.

In the above embodiment, the straight feeder 4
3 is provided on the main body 31, but the linear feeder 43 is connected to the main body 31.
The linear feeder 43 and its driving unit 47 can be directly connected to each other by a connecting wire without a connector 49 by attaching to the measuring unit 32 without attaching to the measuring unit 32. With this configuration, adjustment or repair of the linear feeder 43 can be easily performed by removing the weighing unit 32 to which the linear feeder 43 is attached.

[0039]

According to the embodiments of the invention A first invention, as to open and close the gates of the hoppers that are provided in the combination weigher in the appropriate amount of opening
Some when adjusting or repairing the actuator can be adjusted or repaired controller and actuators of that remove the metering unit belongs its actuator from the combination weigher body, and, for adjustment Even when the weighing unit is removed, the combination weighing can be performed by the remaining weighing units attached to the main body of the combination weigher. Therefore, it is not necessary to stop the combination weigher while adjusting the actuator at a certain position as in the conventional case, and the operating rate of the combination weigher can be improved as compared with the conventional case.

[0040] Then, even when performing the span adjustment of load cell, can span adjustment of the load cell to remove the metering unit belongs its load cell from the combination weigher body and one metering unit for adjustment Even if is removed, the combination weighing can be performed by the remaining weighing units attached to the main body of the combination weigher. Thus, while performing the span adjustment of the load cell of the prior art some locations as such, it is not necessary to stop the combination weigher, there is an effect that the operation rate of the combinational weigher can be increased than before. Then, the analog weighing signal output from the load cell is converted into a digital weighing signal and transmitted to the command section via the connector. Since the digital weighing signal is less affected by noise than the analog weighing signal, the accuracy is low. There is an effect that a combination weighing with a high level can be performed.

According to the second invention, by attaching and detaching a connector provided between a certain weighing unit and the command unit, the bundle of connection wires of the weighing unit is collectively connected or disconnected. Therefore, it is not necessary to attach and detach individual connectors separately provided to each actuator and the like as in the related art, and there is an effect that workability is improved. And since it is not necessary to attach and detach a plurality of connectors individually, there is an effect that a mistake in connection between a plurality of connectors can be prevented.

According to the third invention, the plug (or receptacle) provided in the weighing unit and the receptacle (or plug) provided in the main body are electrically connected in a state where the weighing unit is attached to the main body of the combination weigher. In a state where the measuring unit is detached from the main body of the combination weigher, the plug (or receptacle) provided in the measuring unit and the receptacle (or plug) provided in the main body are electrically disconnected from each other. In addition, it is not necessary to lengthen the connecting wires led out from the main body side, and therefore, the bulk of the combination weigher can be reduced by the amount that there is no need to provide a space for accommodating the connecting wires in the main body of the combination weigher. This has the effect. In addition, since the connecting wires led out from the main body can be made short, the connecting wires do not get confused and do not hinder maintenance or repair.

According to the fourth invention, since each weighing unit is covered by a separate cover, when the weighing unit is removed from the combination weigher, parts such as the actuator in the removed weighing unit are externally connected. There is an effect that it can be protected from impact.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical configuration of a combination weigher according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a state where the weighing unit of the embodiment is attached to a main body of the combination weigher.

FIG. 3 is a longitudinal sectional view showing a state where the weighing unit of the embodiment is moved along a guide portion.

FIG. 4 is a view of the weighing unit of the embodiment as viewed from a direction AA in FIG. 3;

FIG. 5 is a block diagram showing an electric configuration of a conventional combination weigher.

[Explanation of symbols]

 32 Measuring unit 33 RCU (command unit) 35 Load cell 37 Stepping motor 39 Stepping motor 40 Control unit 41 Cover 43 Straight feeder 46 A / D converter 48 SUBCPU 49 Connector 51 Guide unit 58 Plug 59 Receptacle

Claims (4)

(57) [Scope of request for utility model registration] 1. A combination weigher comprising: a plurality of weighing units; and a command unit that instructs the weighing units to operate and performs a combination operation, wherein each of the weighing units is Can be freely attached and detached from the command section
A is a hopper which constitutes one set of the plurality of hoppers are provided in the combination weigher and grouped into sets the number corresponding to the number of the weighing unit relative to the one set of the hopper gate that al Re are provided in the hopper provided Te
And actuators for opening and closing the over preparative, a load cell is provided for the one set of the hopper, the weighing uni corresponding to the pair provided corresponding to the one set
The measuring unit is attached with the
The above actuator provided on the
Drive control to open and close the gate with the adjusted opening amount
The analog weight signal outputted from the upper SL load cell as well as into a digital weighing signal output to the instruction unit
And the weighing unit is removed from the command unit.
The gate provided on the weighing unit
Adjust the volume and adjust the span of the load cell.
A control unit that can be performed individually for each quantity unit.
And the command section is attached to the command section.
Digital weighing signal from the control unit of each weighing unit
A combination weigher characterized in that a combination is read out to perform a combination operation . 2. The combination weigher according to claim 1, wherein connection wires for electrically connecting said plurality of control units and said command unit are grouped for each control unit, and each of said grouped connections is connected. A combination weigher characterized in that a connector that enables a bundle of electric wires to be changed between a connected state and a non-connected state at once is interposed in the middle of each of the connected electric wire bundles. 3. The combination weigher according to claim 2, wherein each of said weighing units is detachably attached to a main body of said combination weigher, and said connector is configured with said weighing unit attached to said main body. And the plug are electrically connected to each other, and the receptacle and the plug are electrically disconnected from the main body when the measuring unit is detached from the main body. Position,
A combination weigher wherein the plug is provided at a predetermined position on the weighing unit side or the main body side. 4. The combination weigher according to claim 1, wherein each of said weighing units is covered by a separate cover.