JP5043738B2 - Combination scale - Google Patents

Description

  The present invention relates to a combination weigher that weighs a plurality of objects to be weighed and combines objects to be weighed so that the total weight becomes a target weight or a target weight.

Combination weighers can be divided into automatic, semi-automatic, and manual types depending on the method of supplying and discharging the objects to be weighed. In an automatic combination weigher, both supply and discharge of an object to be weighed are performed automatically (machine control). In the semi-automatic combination weigher, the object to be weighed is manually supplied, but the object to be weighed is automatically discharged. Further, in the manual combination weigher, both supply and discharge of an object to be weighed are performed manually (for example, see Patent Document 1). Among these combination weighers, the manual combination weigher manually supplies and discharges the objects to be weighed. Therefore, the object to be weighed (which is difficult to supply and discharge by a machine that easily sticks to the measuring unit) ( For example, it is effective when measuring the weight of raw meat).
Japanese Utility Model Publication No. 3-36894

  As described above, the weighing operation using the manual combination weigher has a larger work amount by the operator than the automatic or semi-automatic combination weigher, and thus it takes time to work. One way to efficiently perform this weighing operation is to increase the number of weighing units. As the number of measuring units increases, the number of combinations increases, so that many combinations can be performed at one time, and the weighing operation can be performed efficiently. However, increasing the number of measuring units has the downside of increasing manufacturing and maintenance costs.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a combination weigher capable of efficiently performing a weighing operation while suppressing manufacturing costs.

  In order to solve the above problems, a combination weigher according to the present invention includes a plurality of weighing units for weighing the objects to be weighed, a plurality of temporary placing units for temporarily placing the objects to be weighed by the weighing units, An operation control unit that obtains the weight of the objects to be weighed from the weighing unit and selects a combination of objects to be weighed so that the total weight is a predetermined weight or close to the predetermined weight; The objects to be weighed include the objects to be weighed on the weighing unit and the objects to be weighed on the temporary storage unit. According to this configuration, it is possible to provide a combination weigher that can efficiently perform the weighing operation while suppressing the manufacturing cost.

  In the combination weigher according to the present invention, the temporary placement unit and the weighing unit are arranged adjacent to each other, and the placement surfaces on which the objects to be weighed are placed at different height positions. You may do it. According to such a configuration, a part of the object to be weighed on the temporary placement unit is not placed on the weighing unit, so that erroneous weighing can be prevented.

  In the combination weigher according to the present invention, the weighing units are arranged in a row to form a weighing unit row, and the temporary placement unit is arranged in a row so as to correspond to each weighing unit of the weighing unit row. A temporary placement portion row may be formed, and the weighing portion row and the temporary placement portion row may be arranged in parallel. According to such a configuration, it is possible to easily perform the operation of transferring the object to be weighed after the measurement to the temporary placement unit.

  In the combination weigher according to the present invention, three or more rows may be formed by combining the weighing portion row and the temporary placement portion row, and these may be arranged stepwise. According to such a configuration, the weighing operation can be easily performed even when three or more rows are formed by combining the weighing portion row and the temporary placement portion row.

  In the combination weigher according to the present invention, a plurality of the temporary placement portions may be provided for one weighing portion, and the temporary placement portions may be disposed so as to surround the weighing portion. Good. According to this configuration, the number of weighing units can be increased, so that the weighing operation can be made more efficient.

  The combination weigher according to the present invention further includes a display lamp corresponding to each of the weighing unit and the temporary placement unit, and the calculation control unit is placed with an object to be weighed constituting the selected combination. The indicator lamp corresponding to the weighing unit and / or the temporary storage unit may be turned on. According to such a configuration, it is possible to easily determine the selected object to be measured by turning on the display lamp.

  According to the present invention, it is possible to provide a combination weigher capable of efficiently performing a weighing operation while suppressing manufacturing costs.

  Embodiments according to the present invention will be described below with reference to the drawings. Below, the same code | symbol is attached | subjected to the element which is the same or it corresponds through all the drawings, and the overlapping description is abbreviate | omitted.

(First embodiment)
First, the mechanical configuration of the combination weigher 100 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a perspective view of a combination weigher 100 according to the embodiment. As shown in FIG. 1, the combination weigher 100 according to this embodiment is a manual combination weigher, and includes a plurality of weighing units 1, a plurality of temporary placement units 2, a frame unit 3, and a control unit 4. It has.

  The measuring unit 1 is a part for measuring the weight of the object to be weighed, and a total of 12 units are arranged in two rows of 6 in the center on the frame unit 3. That is, the weighing units 1 are arranged in a row to form two weighing unit rows 1A. Since the combination weigher 100 according to the present embodiment is a manual type, an operator directly supplies or discharges an object to be weighed to the weighing unit 1. The weighing unit 1 can independently weigh the weights of objects to be weighed thereon.

  The temporary placement unit 2 is a part on which an object to be weighed by the weighing unit 1 is temporarily placed. The temporary placement unit 2 cannot measure the weight of the object to be weighed. In addition, in FIG. 1, the thickness of the bottom part of the temporary placement part 2 is thinner than the measurement part 1 (FIG.4 and FIG.5 is also the same). A total of twelve temporary placement units 2 are arranged on the frame unit 3 on the outside of the weighing unit 2 on the frame unit 3. That is, the temporary placement units 2 are arranged in a row so as to correspond to the respective weighing units 1 to form the temporary placement unit row 2A, and are arranged in parallel with the weighing unit row 1A. The temporary placement unit 2 is disposed adjacent to the weighing unit 1, and the upper surface of the temporary placement unit 2 (the placement surface on which the object to be weighed is placed) is the upper surface of the weighing unit 1 (the placement on which the item to be weighed is placed). It is arranged to be lower than the surface.

  The frame part 3 is a part that supports the measuring part 1 and the temporary placement part 2. The frame part 3 has a display lamp 5 on the front side. The display lamp 5 corresponds to each of the weighing unit 1 and the temporary placement unit 2, and is disposed on the center side when viewed from the weighing unit 1 and the temporary placement unit 2.

  The control unit 4 is located on one end side of the frame portion 3 (the back side in FIG. 1). The control unit 4 has a touch panel 6 on its surface. The touch panel 6 displays a measurement result screen, an input screen for setting measurement conditions, and the like, and the measurement conditions can be directly set by touching the screen. The above is the description of the mechanical configuration of the combination weigher 100 according to the present embodiment.

  Next, the electrical configuration (control system) of the combination weigher 100 will be described with reference to FIG. FIG. 2 is a block diagram of the combination weigher 100 according to the embodiment of the present invention. As shown in FIG. 2, the combination weigher 100 includes 12 weighing units 1, a control unit 4, and 24 display lamps 5. Among these, the control unit 4 includes a computer and its peripheral devices, and includes an arithmetic control unit 7, a display unit 8, an input unit 9, and a storage unit 10.

  The weighing unit 1 includes a load cell (not shown), and can calculate (weigh) the weight of an object to be weighed based on an electric signal from the load cell. Moreover, the measurement part 1 can measure the weight of a to-be-measured object mutually independently. The weight of the object weighed by the weighing unit 1 is sent to the storage unit 10 via the arithmetic control unit 7.

  The display unit 8 has a function of displaying a screen for setting a combination condition and a screen showing a combination result. The screen displayed on the display unit 8 is displayed based on the image display signal from the calculation control unit 7. As described with reference to FIG. 1, the combination scale 100 according to the present embodiment employs the touch panel 6, and the touch panel 6 includes the display unit 8 and the input unit 9 integrated.

  The input unit 9 is a part for setting combination conditions and the like. A screen for setting combination conditions is displayed on the display unit 8 (touch panel 6), and the operator sets combination conditions from the input unit 9 (touch panel 6) while viewing this screen. In the present embodiment, the combination condition is set (particularly when a number is input) by touching each input field displayed on the display unit 8 (touch panel 6). Do. The combination conditions input here are sent to the storage unit 10 via the arithmetic control unit 7.

  The storage unit 10 includes an internal memory of a computer and has a function of storing data and the like. As described above, the weight of the object weighed by the weighing unit 1 and the combination conditions set by the input unit 9 are sent to the storage unit 10 and accumulated. Note that the accumulated weight and combination conditions of the objects to be weighed are taken out by the calculation control unit 7 as necessary, and used for the calculation described later.

  The calculation control unit 7 includes a CPU and the like, and has a function of controlling the entire combination weigher 100 and selecting a combination of objects to be weighed that satisfies the combination conditions (combining calculation). The arithmetic control unit 7 acquires the weight of the object to be weighed and the combination conditions accumulated in the storage unit 10. Then, an optimum combination of objects to be weighed is selected from these weights and combination conditions. A method for selecting a combination of objects to be weighed (combination weighing method) will be described later.

  The display lamp 5 can be turned on and off to notify the operator which combination of objects selected by the calculation control unit 7 is. The lighting and extinguishing of the display lamp 5 are controlled by the arithmetic control unit 7, and the display lamp 5 corresponding to the weighing unit 1 and / or the temporary placement unit 2 on which the selected combination of objects to be weighed is turned on (see FIG. 1). ). The above is the electrical configuration of the combination weigher 100 according to the present embodiment.

  Next, the operation of the combination weigher 100 according to the present embodiment will be described with reference to FIG. Here, a method of selecting three raw meats (objects to be weighed) so that the combined weight (total weight of the combined objects to be weighed) is close to 300 g will be described as an example. FIG. 3 is a flowchart showing the operation of the combination weigher 100. This operation is performed under the control of the arithmetic control unit 7.

  First, the combination conditions (allowable weight range and target weight) are recognized (step S1). This combination condition (allowable weight range and target weight) is set from the input unit 9 by the operator. The recognized combination conditions are sent to the storage unit 10 and accumulated. In the present embodiment, the operator sets “300 to 320 g” as the allowable weight range and “300 g” as the target weight, and the arithmetic control unit 7 recognizes this.

  Next, the weight of the object to be weighed is acquired (step S2). Specifically, an operator places an object to be weighed on the weighing unit 1, the weighing unit 1 measures the weight of each object to be weighed, and the calculation control unit 7 acquires the weight. In the present embodiment, raw meat (objects to be weighed) is placed on each weighing unit 1 having twelve workers. Each weighing unit 1 measures the weight of the object to be weighed independently of each other, and the arithmetic control unit 7 acquires the weight of each object to be weighed here. In addition, said raw meat (to-be-measured object) is cut out so that it may each be about 100 g.

  Next, the weight acquired in step S2 is accumulated in the storage unit 10 (step S3). At this time, the weight of the object to be weighed in the storage unit 10 is accumulated in association with the weighing unit 1 that has performed weighing. Here, the operator moves the objects to be weighed by the respective weighing units to the temporary placement units 2 corresponding to the respective weighing units 1 (temporary placement). In this embodiment, since it corresponds to the temporary placement unit 2 outside the weighing unit 1, the object to be weighed (raw meat) is moved to the outside temporary placement unit 2 as it is. In this way, since the objects to be weighed are temporarily placed in the temporary placement sections 2 determined in advance, the weight of the objects to be weighed on each temporary placement section 2 can be grasped.

  Next, the weight of the object to be weighed is acquired again (step S4). In this step, as in step S2, the operator places an object to be weighed on the weighing unit 1, the weighing unit 1 measures the weight of each object to be measured, and the calculation control unit 7 acquires the weight. In the combination weigher 100 according to the present embodiment, the placement surface of the weighing unit 1 (the surface on which the object to be weighed is placed) and the placement surface of the temporary placement unit 2 are arranged at different height positions. A part of the object to be weighed transferred to the placing unit 2 does not remain on the weighing unit 1, and erroneous weighing in the weighing unit 1 can be avoided.

  Next, the weight acquired in step S4 is accumulated in the storage unit 10 (step S5). Here, the data accumulated in step S3 is not overwritten but accumulated separately from the data accumulated in step S3. Thereby, the weight data of a total of 24 raw meats (objects to be weighed) acquired in step S2 and step S4 are accumulated. In this step, unlike step S3, after weighing, the object to be weighed is not moved but is left on the weighing unit 1 as it is.

  Next, a combination weight is calculated (step S6). Specifically, the weight data of a total of 24 raw meats (objects to be weighed) acquired in step S2 and step S5 and accumulated in the storage unit 10 are taken out, and among these 24 raw meats (objects to be weighed), 3 The total weight (combination weight) is calculated for all combination patterns composed of a piece of raw meat (object to be weighed).

  Next, it is determined whether or not the combined weight calculated in step S6 is within the allowable weight range recognized in step S1 (step S7). In this embodiment, it is determined whether or not the combination weight is in the range of 300 to 320 g in order for all combinations. If the combination weight is within the allowable weight range, the process proceeds to step S8, and if the combination weight is not within the allowable weight range, the process proceeds to step S9.

  In step S8, a flag is set for the combination. As described above, only the combination whose combination weight is within the allowable weight range proceeds to this step (see step S7). Therefore, passing through this step means that only a combination whose combination weight is within the set range is flagged.

  Next, it is determined whether or not the combination is the last one (step S9). If the combination is not the last one, that is, if it is not determined whether the combination weight is within the allowable weight range (not passed through step S6), the process returns to step S6 to return the remaining combination. It is determined whether the combination weight is within the allowable weight range for the combination. The order of determining whether or not the combination weight is within the allowable weight range may be any order, but the same combination is not determined many times. On the other hand, if the combination is the last one, the process proceeds to step S10.

  In step S10, it is determined whether there is a combination with a flag set. If there is a combination with a flag, that is, if there is a combination whose combination weight is within the allowable weight range, the process proceeds to step S11. On the other hand, if there is no combination in which the flag is raised, the steps after this step cannot be performed, and the process ends there.

  In step S11, the combinations of the objects to be weighed that have been flagged in step S8 are arranged in the order in which the combination weight is close to the target weight recognized in step S1. In the present embodiment, the combination weights are arranged in order from the combination close to the target weight of 300 g.

  Next, the display lamp is turned on (step S12). Specifically, among the combinations arranged in step S11, the weighing unit 1 and / or the temporary placement unit 2 on which the objects to be weighed constituting the first combination (the combination weight is closest to the target weight) are placed. The corresponding display lamp 5 is turned on. That is, when any of the three objects to be weighed constituting the combination whose combination weight is closest to the target weight is placed on the weighing unit 1, the display lamps 5 corresponding to the weighing unit 1 are turned on, and all of them are temporarily When it is placed on the placement unit 2, the indicator lamp 5 corresponding to the temporary placement unit 2 is turned on, and when a part is placed on the weighing unit 1 and the remaining part is placed on the temporary placement unit 2, The display lamps 5 corresponding to the weighing unit 1 and the temporary placement unit 2 are turned on. By this lighting of the display lamp, the operator recognizes that the object to be weighed selected by the combination calculation is placed on the weighing unit 1 and / or the temporary storage unit 2 corresponding to the lighted display lamp. Can do. If these objects to be weighed are taken out, a combination of raw meat (objects to be weighed) whose combined weight is close to the target weight of 300 g can be made.

  The above is the description of the first embodiment according to the present invention. As described above, according to the configuration of the present embodiment, not only the objects to be weighed on the weighing unit 1 but also the objects to be weighed on the temporary storage unit 2 are combined (the total weight is a predetermined weight or the predetermined weight). Therefore, the weighing work can be performed efficiently. In addition, according to the combination weigher according to the present embodiment, the temporary placement unit does not need to have a configuration for weighing, and thus the manufacturing cost of the combination weigher can be suppressed.

(Second Embodiment)
Next, with reference to FIG. 4, the combination weigher 200 which concerns on 2nd Embodiment of this invention is demonstrated. FIG. 4 is a perspective view of the combination weigher 200 according to this embodiment. As shown in FIG. 4, the combination weigher 200 according to this embodiment includes one weighing unit row 1 </ b> A composed of six weighing units 1 and two temporary placement unit rows 2 </ b> A each composed of six temporary placement units 2. I have. Among these, the temporary placement unit row 2A on one side is arranged at a position higher than the weighing unit row 1A, and the temporary placement unit row 2A on the other side is arranged at a position lower than the weighing unit row 1A. One weighing unit row 1A and two temporary placement unit rows 2A are arranged in a step shape as a whole. The configuration of the combination weigher 200 according to the present embodiment is different from the configuration of the combination weigher 100 according to the first embodiment in the arrangement and number of the weighing units 1 and the temporary storage units 2 as described above. The configuration is basically the same as that of the combination weigher 100 according to one embodiment.

  In the control of the combination weigher 200 according to the present embodiment, since the two temporary placement units 2 are provided for one weighing unit 1 as described above, the objects to be weighed on the weighing unit 1 are measured. Are transferred to different temporary placement units 2 in total (temporarily placed), and the weight of the object to be weighed in the weighing unit 1 is measured three times per combination calculation. That is, in the first embodiment, as described in the flowchart of FIG. 3, the step of acquiring the weight of the object to be weighed and accumulating it in the storage unit 10 is repeated twice (steps S2 and S3 and step S4). And S5), in this embodiment, it is further repeated once, and the combination calculation is performed based on the acquired three times of weight data of the objects to be weighed.

  According to the combination weigher 200 according to the present embodiment, the operator works toward the stepped inclined surface formed by the weighing unit row 1A and the temporary placement unit row 2A, so that the worker can move the weighing unit 1 and the temporary placement surface. The hand can easily reach the placement unit 2 and the weighing operation can be performed efficiently. 4 shows a case where the combination weigher 200 includes one weighing unit row 1A and two temporary placement unit rows 2A, the number of the weighing unit row 1A and the temporary placement unit row 2A. Is not limited to this. For example, a configuration may be adopted in which two weighing unit rows 1A and two temporary placement unit rows 2A are arranged stepwise.

(Third embodiment)
Next, a combination weigher 300 according to a third embodiment of the present invention will be described with reference to FIG. FIG. 5 is a perspective view of the combination weigher 300 according to this embodiment. As shown in FIG. 5, the combination weigher 300 according to this embodiment includes two weighing units 1 and 16 temporary placement units 2. The two weighing units 1 are arranged so as to surround the eight temporary placement units 2. The configuration of the combination weigher 300 according to the present embodiment is different from the configuration of the combination weigher 100 according to the first embodiment in the arrangement and the number of the weighing units 1 and the temporary storage units 2 as described above. The configuration is basically the same as that of the combination weigher 100 according to one embodiment.

  In the control of the combination weigher 300 according to the present embodiment, since the eight temporary placement units 2 are provided for one weighing unit 1 as described above, the objects to be weighed on the weighing unit 1 are respectively set. A total of eight times (temporary placement) is performed on the different temporary placement units 2, and the weight of the object to be weighed in the weighing unit 1 is measured nine times per combination calculation. That is, in the first embodiment, as described in the flowchart of FIG. 3, the step of acquiring the weight of the object to be weighed and accumulating it in the storage unit 10 is repeated twice (steps S2 and S3 and step S4). And S5), in the present embodiment, the calculation is further repeated seven times, and the combination calculation is performed based on the obtained weight data of the object to be weighed nine times.

  As described above, according to the combination weigher 300 according to the present embodiment, one weighing unit 1 weighs the object to be weighed nine times even though there are two weighing units 1. As a result, the combination calculation can be performed from the total 18 objects to be weighed, and thus the efficient combination calculation can be performed while further reducing the manufacturing cost of the combination weigher 300.

  ADVANTAGE OF THE INVENTION According to this invention, the combination weigher which can perform a measurement operation | work efficiently can be provided, suppressing manufacturing cost. Therefore, it is useful in the technical field of combination weighers.

1 is a perspective view of a combination weigher according to a first embodiment of the present invention. 1 is a block diagram of a combination weigher according to a first embodiment of the present invention. It is a flowchart of the combination scale which concerns on 1st Embodiment of this invention. It is a perspective view of the combination scale which concerns on 2nd Embodiment of this invention. It is a perspective view of the combination scale which concerns on 3rd Embodiment of this invention.

Explanation of symbols

100, 200, 300 Combination weigher 1 Weighing unit 1A Weighing unit row 2 Temporary placing unit 2A Temporary placing unit row 5 Display lamp 7 Calculation control unit

Claims (6)

Obtaining a plurality of weighing units for weighing the objects to be weighed, a plurality of temporary placing units for temporarily placing the objects to be weighed by the weighing unit, and the weights of the objects to be weighed from the weighing units. And a calculation control unit that selects a combination of objects to be weighed such that the total weight is a predetermined weight or a value close to the predetermined weight. Includes objects to be weighed and objects to be weighed on the temporary storage part ,
The temporary placement unit and the weighing unit are arranged adjacent to each other, and are placed so that the placement surfaces on which the objects to be weighed are placed have different heights and have different horizontal positions. Manual combination scale. The weighing units are arranged in a row to form a weighing unit row, and the temporary placement unit is arranged in a row so as to correspond to each weighing unit of the weighing unit row, and the weighing unit row is formed. The combination weigher according to claim 1 , wherein the part row and the temporary placement part row are arranged in parallel. The combination weigher according to claim 2 , wherein three or more rows are formed by combining the measuring portion row and the temporary placement portion row, and these are arranged in a step shape. The combination scale according to claim 1 , wherein a plurality of the temporary placement portions are provided for one weighing portion, and the temporary placement portions are disposed so as to surround the weighing portion. The combination weigher according to claim 4, wherein the weighing unit is arranged so that a placement surface on which an object to be weighed is placed is higher than the plurality of temporary placement units surrounding the weighing unit.   The weighing unit and the temporary placement unit are further provided with display lamps corresponding to the weighing unit and the temporary placement unit, and the calculation control unit includes the weighing unit and / or the temporary placement on which the objects to be weighed constituting the selected combination are placed. The combination weigher according to any one of claims 1 to 5, wherein the display lamp corresponding to a part is turned on.

Images