JP5074996B2 - Combination scale - Google Patents

Description

  The present invention relates to a combination weigher that performs combination weighing so that an object to be weighed is within a predetermined weight range.

  Conventionally, for example, there is a combination weigher as a measuring device for measuring an object to be weighed such as detergent or confectionery. In general, an object to be weighed with a combination weigher is put into a packaging machine and packed in a bag.

  As such a combination weigher, for example, a combination weigher having a double-structured collective chute comprising an inner chute and an outer chute is also known (see, for example, Patent Documents 1, 2, and 3).

  In such a combination weigher having a double-structured collective chute, for example, a funnel-shaped inner chute is arranged below the weighing hopper, and two outer chutes divided into left and right are arranged around the inner chute. Has been. For example, after temporarily holding the objects to be discharged from each of these three chutes, it has three hoppers for discharging, and further below the three hoppers, for example, the first and second two A lower chute is provided, and the object to be weighed is discharged from the first and second lower chutes to two inlets (first and second packaging machine inlets) of the packaging machine. In this case, three combinations (first to third combinations) of weighing hoppers whose combined weight value falls within a predetermined weight range are obtained, and the objects to be weighed by the weighing hopper selected as the first combination are obtained. At the same time as discharging to the inner chute, the weighing hopper to be weighed selected for the second combination is discharged to the right outer chute and at the same time the weighing hopper to be weighed selected to the third combination is Drain to the outer chute. Further, the objects to be weighed that have been discharged by sliding down the inner chute and the two outer chutes are temporarily held by the three hoppers, and then sequentially from the three hoppers, the first lower chute and the second lower chute. Are discharged alternately. Then, the object to be weighed discharged from the discharge port of the first lower chute is input to the first packaging machine input port, and the object to be weighed discharged from the discharge port of the second lower chute is the second packaging machine. It is thrown into the slot.

  FIG. 6 is a schematic diagram showing an example of a packaging unit of a packaging machine (vertical pillow packaging machine) arranged below the combination weigher.

  In the packaging machine, while manufacturing the bag, the bag is filled with the objects to be weighed discharged from the combination scale and packaged. In this packaging machine (packaging unit), a sheet-like packaging material 50 drawn out from a packaging material roll is wound around a tube 51 by a former 52 to be formed into a cylindrical shape, and is adsorbed by a pull-down belt machine 53 downward. The stacked vertical edges of the packaging material 50 that has been fed and sealed are sealed (sealed by welding) by the vertical sealing machine 54. Then, the weighed object is filled into the cylindrical packaging material 50 through the tube 51, and the upper end of the preceding bag and the lower end of the subsequent bag are placed by the horizontal sealing machine 55 disposed below the tube 51. A horizontal seal (transverse seal) is performed over the two. By performing the horizontal sealing, the preceding bag is a complete bag whose upper and lower sides are sealed because the lower end is sealed by the previous horizontal sealing.

For example, if a packaging machine provided with two such packaging units is arranged below the combination weigher, the tube 51 of one packaging unit becomes the first packaging machine inlet, and the other packaging unit has The tube 51 serves as the second packaging machine input port.
Japanese Patent Publication No.8-1395 JP 2007-114083 A JP 2007-1114080 A

  According to the above-described conventional configuration, the objects to be weighed discharged from the combination weigher to the packaging machine are fed into the packaging machine inlet through the first and second lower chutes. The length of the object to be weighed increases during Here, when the packaging machine is operated at a higher speed, the cycle of the horizontal sealing performed by the horizontal sealing machine 55 of the packaging machine is shortened, and the discharge cycle of the objects to be weighed from the combination weigher must be shortened. If the object to be weighed is extended from the lower chute to the packaging machine and becomes longer, the distance between the object to be weighed first and the object to be weighed after that cannot be kept sufficiently. There is a problem that when the horizontal sealing is performed, an object to be weighed is generated in the sealing portion.

  The present invention has been made to solve the above-described problems, and provides a combination weigher that can be used for a packaging machine that operates at high speed without causing the object to be weighed in the packaging machine. It is aimed.

  In order to achieve the above object, the combination weigher of the present invention is arranged in a ring, and selectively discharges the objects to be weighed in two directions, the inner direction and the outer direction of the ring. A hopper group composed of a plurality of combination hoppers configured as possible, and a weighing object disposed below the hopper group and discharged from the combination hopper of the hopper group in the inward direction. An inner chute to be discharged from the lower discharge port, and the hopper group for the combination of the first group of the first and second groups divided into two hopper groups, A first outer chute for collecting objects to be discharged from the combination hoppers of the first group in the outer direction and discharging them from a lower discharge port; and A second outer chute that is provided corresponding to the combination hopper and collects objects to be discharged from the combination hoppers of the second group in the outer direction and discharges them from a lower discharge port; An inner collective hopper that is disposed below the inner chute discharge port and can temporarily hold an object to be weighed discharged from the inner chute and then discharged, and below the first outer chute discharge port Disposed between the first outer collecting chute and the second outer chute discharging port. And a second outer collecting hopper that can be discharged after temporarily holding an object to be discharged from the second outer chute, and disposed below the first outer collecting hopper, First A first lower hopper for temporarily discharging the objects to be weighed discharged from the outer collecting hopper and then discharging directly to the first packaging machine inlet, and below the inner collecting hopper and the first outer collecting hopper A second object for temporarily holding an object to be discharged from either the inner collecting hopper or the first outer collecting hopper, and then directly discharging it to the first packaging machine input port. After temporarily holding a lower-stage hopper, the inner collective hopper and the second outer collective hopper and being discharged from either the inner collective hopper or the second outer collective hopper A third lower hopper for discharging directly to the second packaging machine inlet, and an object to be weighed disposed below the second outer collecting hopper and discharged from the second outer collecting hopper After holding temporarily, the second A fourth lower hopper for discharging directly to the packaging machine inlet, and a control means, wherein the control means has a total weight value of the objects to be weighed within a predetermined weight range. A first outer discharge combination that is a combination of the combination hoppers of one group, and a combination hopper of the second group in which the total weight value of the objects to be weighed is within the predetermined weight range. A second outer discharge combination that is a combination of the above and an inner discharge combination that is a combination of the hoppers for the combination in the hopper group in which the total weight value of the objects to be weighed is within the predetermined weight range. A combination process for obtaining three sets of discharge combinations so as not to include the same combination hoppers is repeatedly performed at a predetermined cycle, and the first outer discharge set obtained by the combination process is performed. A process of discharging the object to be weighed from the combination hopper to the first outer chute and a process of discharging the object to be weighed from the combination hopper of the second outer discharge combination to the second outer chute And the combination hopper discharging process for simultaneously discharging the objects to be weighed from the combination hopper of the inner discharge combination to the inner chute at the predetermined cycle, and the combination hopper for two consecutive times Corresponding to the discharge processing, the objects to be weighed are discharged twice from each of the inner collecting hopper, the first outer collecting hopper, and the second outer collecting hopper, and the first lower hopper and the first hopper 2) A total of 3 objects to be weighed are discharged from the lower hopper to the first packaging machine input port, and 3 times in total from the third lower hopper and the fourth lower hopper. A discharge control process for controlling the inner collecting hopper, the first and second outer collecting hoppers, and the first to fourth lower hoppers so as to discharge a mass to the second packaging machine inlet. Configured to do.

  According to this configuration, the combination process includes the inner collecting hopper, the first and second outer collecting hoppers, and the first to fourth lower hoppers, and the control unit obtains three sets of discharge combinations, and three sets. The combination hopper discharge process for discharging the objects to be weighed simultaneously from the combination hopper of the discharge combination is repeated at a predetermined cycle, and the discharge control process is performed as described above, so that the time is twice the predetermined cycle. The object to be weighed can be discharged three times into each of the first and second packaging machine inlets. Here, since the objects to be weighed in the first to fourth lower hoppers are directly fed into the packaging machine inlet, the objects to be weighed in a lump from the lower hopper to the packaging machine inlet. Can be dropped. Therefore, even when the packaging machine is operated at a high speed and the predetermined cycle is short, a sufficient distance can be provided between the first object to be weighed and the next object to be weighed at the packaging machine inlet. It is possible to prevent biting of the object to be weighed in the lateral seal of the packaging machine.

  In addition, when the control means discharges the object to be weighed from the first to fourth lower hoppers, the control means discharges the object to be weighed from any one of the first lower hopper and the second lower hopper. At the same time, the process of discharging the object to be weighed from any one of the third lower hopper and the fourth lower hopper is performed at intervals of 2/3 of the predetermined period. May be.

  With this configuration, the objects to be weighed can be discharged simultaneously to the first and second packaging machine inlets at an interval of 2/3 of a predetermined period.

  The inner collecting hopper, the first outer collecting hopper, and the second outer collecting hopper can selectively discharge the objects to be weighed in the first direction and the second direction, respectively. An object to be weighed discharged from the collecting hopper in the first direction is put into the second lower hopper, and an object to be weighed from the inner collecting hopper in the second direction is the third lower hopper. To be weighed and discharged from the first outer collecting hopper in the first direction into the first lower hopper and discharged from the first outer collecting hopper in the second direction. The objects to be weighed are put into the second lower hopper, the objects to be discharged from the second outer collecting hopper in the first direction are put into the third lower hopper, and the second From the outer collecting hopper to the second direction The to-be-measured object to be taken out is put into the fourth lower hopper, and the two consecutive discharge control processes performed by the control means are (4k + 1) times (k is an integer of 0 or more). A process of discharging the objects to be weighed from the inner collecting hopper in the second direction in order to load the objects to be weighed that have been input to the inner collecting hopper by the combination hopper discharging process into the third lower hopper; In order to load the objects to be weighed put into the first outer collecting hopper by the (4k + 1) -th combination hopper discharging process from the first outer collecting hopper to the first lower hopper, In order to put the objects to be weighed that have been thrown into the second outer collecting hopper by the process of discharging the objects to be measured in the direction and the (4k + 1) -th combination hopper discharging process into the fourth lower hopper A first process for performing a process of discharging the objects to be weighed from the second outer collecting hopper in the second direction, and an object to be weighed put into the first lower hopper by the first process. At the same time as discharging from the first lower hopper to the first packaging machine input port, an object to be weighed put into the third lower hopper by the first processing is transferred from the third lower hopper to the first hopper. A second process for discharging to the second packaging machine input port, and an object to be weighed that has been input to the fourth lower hopper by the first process from the fourth lower hopper to the second packaging machine input port. A third process for discharging to the second collective hopper, and a workpiece to be weighed that has been input to the inner collective hopper by the (4k + 2) th combination hopper discharge process from the inner collective hopper to the second lower hopper. Discharge the object to be weighed in the first direction And a process of discharging the object to be weighed that has been input to the second lower hopper by the fourth process from the second lower hopper to the first packaging machine input port. In order to load the object to be weighed that has been thrown into the first outer collecting hopper by the (4k + 2) -th combination hopper discharge process with the fifth process that is performed simultaneously with the process 3, The object to be weighed put into the second outer collecting hopper by the process of discharging the object to be weighed from the first outer collecting hopper in the first direction and the (4k + 2) th combination hopper discharging process. A sixth process for performing a process of discharging the objects to be weighed in the first direction from the second outer collecting hopper for feeding into the third lower hopper, and the first process by the sixth process. Was put into the lower hopper At the same time as the weighing object is discharged from the first lower hopper to the first packaging machine inlet, the object to be weighed that has been thrown into the third lower hopper by the sixth process is transferred to the third lower hopper. From the second wrapping machine input port to the second lower packaging hopper and the (4k + 3) th combination hopper discharging process into the second collective hopper In order to do this, the object to be weighed put into the first outer collecting hopper by the process of discharging the object to be weighed from the inner collecting hopper in the first direction and the (4k + 3) th combination hopper discharging process. The process of discharging the objects to be weighed from the first outer collective hopper in the first direction for feeding into the first lower hopper and the (4k + 3) -th combination hopper discharge process make the second An eighth process of performing a process of discharging the objects to be weighed from the second outer collecting hopper in the second direction in order to load the objects to be weighed charged to the outer collecting hopper into the fourth lower hopper And the material to be weighed put into the second lower hopper by the eighth process is discharged from the second lower hopper to the first packaging machine inlet, and at the same time by the eighth process A ninth process for discharging an object to be weighed into the fourth lower hopper from the fourth lower hopper to the second packaging machine inlet, and an eighth process to the first lower hopper. The tenth process for discharging the input objects to be weighed from the first lower hopper to the first packaging machine inlet and the (4k + 4) th combination hopper discharging process to input the inner collective hopper. The third lower stage An eleventh process for discharging an object to be weighed from the inner collecting hopper in the second direction to be put into the hopper, and an object to be weighed that has been thrown into the third lower hopper by the eleventh process. The process of discharging from the third lower hopper to the second packaging machine inlet is the first process by the twelfth process performed simultaneously with the tenth process and the (4k + 4) th combination hopper discharge process. A process of discharging the objects to be weighed from the first outer collecting hopper in the second direction in order to put the objects to be weighed into the outer collecting hopper into the second lower hopper, and the (4k + 4) th time. The objects to be weighed in the second direction from the second outer collecting hopper in order to load the objects to be weighed in the second outer collecting hopper by the combination hopper discharge process of the second lower collecting hopper. Discharged When the object to be weighed that has been input to the second lower hopper by the thirteenth process is discharged from the second lower hopper to the first packaging machine input port. And a fourteenth process for discharging the object to be weighed that has been input to the fourth lower hopper by the thirteenth process from the fourth lower hopper to the second packaging machine input port, Intervals between the second process, the third and fifth processes, the seventh process, the ninth process, the tenth and twelfth processes, and the fourteenth process May be performed at intervals of 2/3 of the predetermined period.

  With this configuration, the objects to be weighed can be discharged simultaneously to the first and second packaging machine inlets at an interval of 2/3 of a predetermined period. Further, the first to fourth lower hoppers can be used evenly, and it is possible to prevent a part of the lower hoppers from being consumed and damaged due to the high usage frequency.

  In addition, when the control means discharges the object to be weighed from the first to fourth lower hoppers, the control means discharges the object to be weighed from any one of the first lower hopper and the second lower hopper. The process and the process of discharging the object to be weighed from any one of the third lower hopper and the fourth lower hopper are alternately performed at an interval of 1/3 of the predetermined period. It may be configured.

  With this configuration, the objects to be weighed can be discharged alternately to the first and second packaging machine inlets at an interval of 1/3 of a predetermined period.

  The inner collecting hopper, the first outer collecting hopper, and the second outer collecting hopper can selectively discharge the objects to be weighed in the first direction and the second direction, respectively. An object to be weighed discharged from the collecting hopper in the first direction is put into the second lower hopper, and an object to be weighed from the inner collecting hopper in the second direction is the third lower hopper. To be weighed and discharged from the first outer collecting hopper in the first direction into the first lower hopper and discharged from the first outer collecting hopper in the second direction. The objects to be weighed are put into the second lower hopper, the objects to be discharged from the second outer collecting hopper in the first direction are put into the third lower hopper, and the second From the outer collecting hopper to the second direction The to-be-measured object to be taken out is put into the fourth lower hopper, and the two consecutive discharge control processes performed by the control means are for the n-th (n is a positive integer) combination. A process of discharging the objects to be weighed in the first direction from the inner collecting hopper in order to load the objects to be weighed that have been input into the inner collecting hopper by the hopper discharging process into the second lower hopper; The objects to be weighed in the first direction from the first outer collecting hopper in order to load the objects to be weighed in the first outer collecting hopper by the combination hopper discharging process of the first lower collecting hopper. And the second outer collective hopper from the second outer collective hopper in order to feed the objects to be weighed put into the second outer collective hopper by the n-th combination hopper discharge process. Said The first process for discharging the object to be weighed in the direction of 2 and the object to be weighed that has been input to the first lower hopper by the first process from the first lower hopper to the first process. A second process for discharging to the packaging machine input port, and after the second process, an object to be weighed that has been input to the fourth lower hopper by the first process is transferred from the fourth lower hopper to the fourth hopper. A third process for discharging to the second packaging machine input port, and an object to be weighed that has been input to the second lower hopper by the first process after the third process is transferred to the second lower hopper From the first wrapping machine inlet to the third lower hopper, and the (n + 1) th combination hopper discharging process into the third collective hopper To be weighed from the inner collecting hopper in the second direction The first outer side in order to put the objects to be weighed put into the first outer collecting hopper by the (n + 1) -th combination hopper discharging process and the first lower hopper. The process of discharging the objects to be weighed from the collecting hopper in the first direction and the object to be weighed put into the second outer collecting hopper by the (n + 1) -th combination hopper discharging process are performed on the fourth lower stage. A fifth process that performs a process of discharging the objects to be weighed from the second outer collecting hopper in the second direction to be loaded into the hopper, and the third lower hopper by the fifth process. The first lower hopper by the sixth process after the sixth process for discharging the measured object to be weighed from the third lower hopper to the second packaging machine inlet, and the fifth process after the sixth process. The object to be weighed A seventh process for discharging from the lower hopper to the first packaging machine inlet, and an object to be weighed that has been input to the fourth lower hopper by the fifth process after the seventh process. An eighth process of discharging from the fourth lower hopper to the second packaging machine input port, and an object to be weighed input to the inner collective hopper by the (n + 2) th combination hopper discharge process To be put into the first outer collecting hopper by the process of discharging the objects to be weighed from the inner collecting hopper in the first direction and the (n + 2) th combination hopper discharging process. A process of discharging the objects to be weighed in the first direction from the first outer collective hopper in order to put the objects to be weighed into the first lower hopper, and the (n + 2) -th combination hopper discharging process By the above A process of discharging the objects to be weighed in the first direction from the second outer collecting hopper in order to load the objects to be weighed into the outer collecting hopper of the third to the third lower hopper. A tenth process for discharging the object to be weighed that has been input to the second lower hopper by the ninth process from the second lower hopper to the first packaging machine input port; After the process, an eleventh process for discharging the object to be weighed that has been input to the third lower hopper by the ninth process from the third lower hopper to the second packaging machine input port, and A twelfth process for discharging an object to be weighed that has been input to the first lower hopper by the ninth process from the first lower hopper to the first packaging machine input port after the eleventh process; , (N + 3) before the combination hopper discharge process A process of discharging the object to be weighed from the inner collecting hopper in the second direction in order to load the object to be weighed into the inner collecting hopper into the third lower hopper, and the (n + 3) th combination The objects to be weighed put into the first outer collecting hopper by the hopper discharging process are discharged from the first outer collecting hopper in the second direction so as to be put into the second lower hopper. And the second outer collective hopper from the second outer collective hopper in order to feed the objects to be weighed put into the second outer collective hopper by the (n + 3) -th combination hopper discharge process. A thirteenth process for performing a process for discharging the object to be weighed in the second direction, and an object put into the fourth lower hopper by the thirteenth process from the fourth lower hopper to the above-mentioned Second packaging After the fourteenth process for discharging to the charging port and the fourteenth process, the object to be weighed that has been thrown into the second lower hopper by the thirteenth process is transferred from the second lower hopper to the first After the fifteenth process for discharging to the packaging machine inlet, and the fifteenth process, the objects to be weighed that have been thrown into the third lower hopper by the thirteenth process are transferred from the third lower hopper to the third hopper. A second process, a third process, a fourth process, a sixth process, a seventh process, an eighth process, a tenth process, an eleventh process, a twelfth process, a fourteenth process, a fourth process, and a fourth process. Each of the 15th and 16th processes may be configured to be performed at an interval of 1/3 of the predetermined period.

  With this configuration, the objects to be weighed can be discharged alternately to the first and second packaging machine inlets at an interval of 1/3 of a predetermined period. Further, the first to fourth lower hoppers can be used evenly, and it is possible to prevent a part of the lower hoppers from being consumed and damaged due to the high usage frequency.

  In addition, after the first to fourth lower hoppers, all of the objects to be weighed put into the lower hopper from the first part to the last part are stored in the lower hopper. Thus, it is preferable that the object to be weighed is discharged from the lower hopper.

  According to this configuration, it is possible to drop the objects to be weighed from each lower hopper into a lump into the packaging machine insertion port.

  The first and second outer collecting hoppers are disposed at a position higher than the inner collecting hopper, and the objects to be weighed discharged from the first outer collecting hopper in the first direction are disposed in the first direction. A first chute for leading to the lower hopper, a second chute for guiding the objects to be discharged from the first outer collecting hopper in the second direction to the second lower hopper, A third chute for guiding the objects to be discharged from the second outer collecting hopper in the first direction to the third lower hopper; and from the second outer collecting hopper in the second direction. A fourth chute for guiding the discharged object to be measured to the fourth lower hopper may be provided.

  According to this configuration, by arranging the first and second outer collecting hoppers at a position higher than the inner collecting hopper, for example, the first and second outer collecting hoppers are positioned at the same height as the inner collecting hopper. Compared to the case where the object to be weighed slides down the first and second outer chutes, the sliding distance can be shortened, and the objects to be weighed discharged from the combination hopper are the first and second objects. The time until the first and second outer collecting hoppers slide down the outer chute 2 and reach the first and second outer collecting hoppers until the objects discharged from the combination hopper slide down on the inner chute and reach the inner collecting hopper It is possible to shorten the time to approximately the same.

  The present invention has the above-described configuration, and has an effect that it is possible to provide a combination weigher that is compatible with a packaging machine that operates at high speed without causing biting of an object to be weighed in the packaging machine. .

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1A is a schematic schematic view of a partial cross section of the combination weigher according to the first embodiment of the present invention viewed from the side, and FIG. 1B is an assembly chute (one inner side) of the combination weigher. FIG. 1C is a schematic diagram of the chute and the two outer chutes) and the weighing hopper as viewed from above, and FIG. 1C is a schematic diagram of the lower hopper of the combination weigher as viewed from above.

  In this combination weigher, as shown in FIG. 1A, an object to be weighed supplied from an external supply device is radially distributed by vibration on an upper portion of a center substrate (body) 18 disposed in the center of the device. A conical dispersion feeder 1 is provided. Around the dispersion feeder 1, a plurality of linear feeders 2 are provided for feeding an object to be weighed sent from the dispersion feeder 1 to each supply hopper 3 by vibration. Below each linear feeder 2, a supply hopper 3 and a weighing hopper 4 are provided correspondingly, and the plurality of supply hoppers 3 and the weighing hoppers 4 are arranged in a circle around the center base 18. The dispersion feeder 1, the linear feeder 2, the supply hopper 3, and the weighing hopper 4 are attached to the center base 18. Each weighing hopper 4 is attached with a weight sensor 41 such as a load cell that measures the weight of the object to be weighed in the weighing hopper 4, and the measurement value by each weight sensor 41 is output to the control unit 20.

  A substantially inverted frustoconical inner chute 5 is disposed below the weighing hoppers 4 arranged in a circle, and the upper opening is concentrically around the inner chute 5 and is divided into two parts. Two outer chutes 6a and 6b are provided. Each weighing hopper 4 has a configuration in which a gate is provided so that the object to be weighed can be selectively discharged to the inner chute 5 and the outer chutes 6a and 6b below. That is, each weighing hopper 4 is provided with a gate for discharging the object to be weighed to the inner chute 5 and a gate for discharging the object to be weighed to the outer chutes 6a and 6b. In addition, in order to discharge | emit a to-be-measured object to the shape near the real thing of the measurement hopper 4, the 1st gate 22 for discharging | emitting a to-be-measured object to an inner chute, and an outer chute in the circle | round | yen 21 in FIG. A second gate 23 is schematically shown.

  A collecting hopper 7 is disposed at the lower discharge port 5e of the inner chute 5, and collecting hoppers 8a and 8b are disposed at the lower discharge ports 6ae and 6be of the outer chutes 6a and 6b, respectively. The collective hoppers 8 a and 8 b are disposed at a position higher than the collective hopper 7.

  Furthermore, the first to fourth lower hoppers 9 to 12 and the bowl-shaped chutes 13 to 16 are arranged below the collecting hoppers 7, 8a and 8b, and the objects to be weighed discharged from the collecting hoppers 7, 8a and 8b are It is put into the lower hoppers 9-12. This configuration will be described in detail. Two second and third lower hoppers 10 and 11 are arranged below the collecting hopper 7, and the collecting hopper 7 discharges the left side so that the objects to be weighed can be selectively discharged to the two lower hoppers 10 and 11. The gate and the right discharge gate are provided with two gates (not shown), and the objects to be weighed discharged by opening the left discharge gate are directly input to the second lower hopper 10 and the right discharge gate is opened. The objects to be weighed are directly fed into the third lower hopper 11. Two bowl-like chutes 13 and 14 are disposed below the collecting hopper 8a. The chute 13 is constituted by a hook-shaped member for guiding the objects to be weighed discharged from the collecting hopper 8a to the first lower hopper 9, and the chute 14 is used to move the objects weighed from the collecting hopper 8a to the second lower hopper. It is comprised by the hook-shaped member for guide | inducing to 10. In FIG. The collecting hopper 8a has two left gates and right gates (not shown) so that the objects to be weighed can be selectively discharged in the lower left direction and the lower right direction. When the gate is opened, the object to be weighed is discharged onto the chute 13 and the object to be weighed is input to the first lower hopper 9, and when the right discharge gate is opened, the object to be weighed is discharged onto the chute 14 and the second lower hopper 10 is discharged. The object to be weighed is put into Similarly, two hook-like chutes 15 and 16 are disposed below the collecting hopper 8b. The chute 15 is configured by a bowl-shaped member for guiding the objects to be weighed discharged from the collecting hopper 8b to the third lower hopper 11, and the chute 16 is used to move the objects weighed from the collecting hopper 8a to the fourth lower hopper. It is comprised by the hook-shaped member for guide | inducing to 12. The collecting hopper 8b is configured to have two gates (not shown), a left discharge gate and a right discharge gate, so that the objects to be weighed can be selectively discharged in the lower left direction and the lower right direction. When the gate is opened, the object to be weighed is discharged onto the chute 15 and the object to be weighed is inserted into the third lower hopper 11. When the right discharge gate is opened, the object to be weighed is discharged onto the chute 16 and the fourth lower hopper 12. The object to be weighed is put into Note that the right and left are directions illustrated in FIG.

  Below this combination weigher, for example, a twin type packaging machine having two input ports for objects to be weighed is arranged. The first to fourth lower hoppers 9 to 12 are arranged in a straight line as shown in FIG. 1 (c), and are placed below the first and second lower hoppers 9 and 10 at the inlet of one packaging machine. A certain tube 51 a is disposed, and a tube 51 b that is an inlet of the other packaging machine is disposed below the third and fourth lower hoppers 11 and 12. The objects to be weighed discharged from the first and second lower hoppers 9 and 10 are directly put into the tube 51a, and the objects to be weighed discharged from the third and fourth lower hoppers 11 and 12 are directly put into the tube 51b. .

  For example, a twin type packaging machine provided with two packaging units shown in FIG. 6 is disposed below the combination weigher of FIG. In this case, the tube 51 of one packaging unit (first packaging unit) is the one tube 51a of FIG. 1A, and the tube 51 of the other packaging unit (second packaging unit) is FIG. 1A. The other tube 51b. The packaging machine used in the present embodiment is configured such that the first packaging unit and the second packaging unit operate in synchronization, that is, perform the same operation at the same time.

  The control unit 20 is configured by, for example, a microcomputer and controls the operation of the entire combination weigher. In addition, the control unit 20 determines a discharge combination that is a combination of the weighing hoppers 4 to discharge the objects to be weighed for each chute (5, 6a, 6b) by performing a combination process described later.

  The operation of the combination weigher configured as described above will be described. The operation of this combination weigher is realized by the control of the control unit 20. Hereinafter, the collection hopper 7 is also referred to as an inner collection hopper, the collection hopper 8a is also referred to as a left collection hopper, and the collection hopper 8b is also referred to as a right collection hopper.

  The objects to be weighed supplied from the external supply device to the dispersion feeder 1 are supplied from the dispersion feeder 1 to each supply hopper 3 via each linear feeder 2, and the objects to be weighed are input from each supply hopper 3 to each weighing hopper 4. Is done. A combination process described later is performed, and the objects to be weighed are discharged from the weighing hopper 4 selected for each discharge combination. The objects to be weighed are fed from the supply hopper 3 to the weighing hopper 4 which has become empty after the objects to be weighed are discharged. Similarly, an object to be weighed is supplied from the linear feeder 2 to the empty supply hopper 3.

  The combination process will be described. When an object to be weighed is put into the weighing hopper 4 and the weight of the object to be weighed in the weighing hopper 4 is measured by the weight sensor 41, the control unit 20 reads the weighing value of the weighing hopper 4 (the weighing hopper by the weight sensor 41). 4 is measured based on the measured value of the weight of the object in 4. Here, group A is a group of weighing hoppers 4 corresponding to one outer chute 6a, and group B is a group of weighing hoppers 4 corresponding to the other outer chute 6b. A group C (= A + B) made up of all the weighing hoppers 4 is a group of the weighing hoppers 4 arranged above the inner chute 5 and corresponding to the inner chute 5. Accordingly, each weighing hopper 4 belongs to two groups, a group corresponding to one outer chute and a group corresponding to one inner chute. The number of weighing hoppers 4 in each group of groups A and B may be 10, for example.

  In this combination process, the weighing hoppers 4 in a combination in which the total of the weighing values (weights of the objects to be weighed) of the weighing hoppers 4 among the weighing hoppers 4 of the group A corresponding to the outer chute 6a are within the allowable range with respect to the target weight value (This is referred to as a combination hopper 4A), and the combination of the weighing hoppers 4 in the group B corresponding to the outer chute 6b is within the allowable range with respect to the target weight value. (This is referred to as a combination hopper 4B), and the combination weighing hopper 4 in which the total of the weighing values of the weighing hopper 4 within the weighing hopper 4 of the group C corresponding to the inner chute 5 falls within the allowable range with respect to the target weight value. (This is referred to as a combination hopper 4C). Here, the combination hoppers 4A, 4B, and 4C are obtained so that the same weighing hopper 4 is not selected as the combination hoppers 4A and 4B and the combination hopper 4C. In the combination process, for example, a combination calculation is performed based on the measurement value of the weighing hopper 4 of the group A disposed above the one outer chute 6a, and the total of the measurement values of the measurement hopper 4 is within an allowable range with respect to the target weight value. And the weighing hopper 4 (combination hopper 4A) of the combination (optimal combination) that minimizes the absolute value of the difference from the target weight value is selected, and the group B disposed above the other outer chute 6b is selected. A combination operation is performed based on the measurement value of the weighing hopper 4, and the optimum combination weighing hopper 4 (combination hopper 4B) is selected in the same manner. Of the groups C composed of all the weighing hoppers 4, in the groups B and C, the combination calculation is performed based on the weighing values of the weighing hoppers 4 that are not selected as the optimum combination. The combination hopper 4C) is selected. The target weight value and the allowable range (predetermined weight range) for the target weight value are set in advance. Further, the method of obtaining the combination hoppers 4A, 4B, and 4C selected as the three discharge combinations is not limited to the above method.

  Then, the control unit 20 simultaneously discharges the objects to be weighed from the combination hoppers 4A, 4B, and 4C selected in the combination processing (combination hopper discharge processing). Here, for the combination hopper 4A, the object to be weighed is discharged to the outer chute 6a. For the combination hopper 4B, the object to be weighed is discharged to the outer chute 6b. The object to be weighed is discharged to the chute 5. Accordingly, the objects to be weighed discharged from the combination hopper 4A slide down the outer chute 6a and are thrown into the left collecting hopper 8a. The objects to be weighed discharged from the combination hopper 4B slide down the outer chute 6b and gather to the right. The objects to be weighed that have been thrown into the hopper 8b and discharged from the combination hopper 4C slide down the inner chute 5 and are thrown into the inner collecting hopper 7.

  Next, the operation including the collecting hoppers 7, 8a, 8b and the first to fourth lower hoppers 9-12 will be described.

  FIGS. 2A to 2L are diagrams showing the concept of the transfer cycle of the objects to be weighed by the operation of the combination weigher in the present embodiment. Detailed operation timing will be described later with reference to FIG. In FIG. 2, the movement of the object to be weighed is indicated by an arrow, and the movement destination of the object to be weighed and the state in which the object to be weighed is stored is indicated by a black circle. Further, the chutes 13 to 16 are omitted and shown in a simplified manner.

  The transfer cycle of the objects to be weighed in FIGS. 2A to 2I is repeatedly performed.

  First, in FIG. 2A, among the objects to be weighed simultaneously discharged from the combination hoppers 4A, 4B and 4C, the objects weighed from the combination hoppers 4A and 4B are thrown into the left and right collecting hoppers 8a and 8b. Then, the objects to be weighed discharged from the combination hopper 4C are put into the inner collecting hopper 7. The second and fourth lower hoppers 10 and 12 are loaded with objects to be weighed in the previous transfer cycle.

  Next, in FIG. 2B, the objects to be weighed that have been put in the second and fourth lower hoppers 10 and 12 in the previous transfer cycle are discharged.

  Next, in FIG. 2 (c), the objects to be weighed in the inner collecting hopper 7 are put into the third lower hopper 11, and the objects to be weighed in the left and right collecting hoppers 8 a and 8 b are fed into the first and fourth lower hoppers 9, 9. 12 is input.

  Next, in FIG. 2D, among the objects to be weighed simultaneously discharged from the combination hoppers 4A, 4B, 4C, the objects to be weighed discharged from the combination hoppers 4A, 4B are moved to the left and right collecting hoppers 8a, 8b. The objects to be weighed that have been charged and discharged from the combination hopper 4 </ b> C are loaded into the inner collecting hopper 7. Further, the objects to be weighed that have been put into the first and third lower hoppers 9 and 11 are discharged.

  Next, in FIG. 2 (e), the objects to be weighed in the inner collecting hopper 7 are put into the second lower hopper 10.

  Next, in FIG. 2 (f), the objects to be weighed in the left and right collecting hoppers 8 a and 8 b are put into the first and third lower hoppers 9 and 11. In addition, the objects to be weighed in the second and fourth lower hoppers 10 and 12 are discharged.

  Next, in FIG. 2G, among the objects to be weighed simultaneously discharged from the combination hoppers 4A, 4B, and 4C, the objects to be weighed discharged from the combination hoppers 4A and 4B are transferred to the left and right collective hoppers 8a and 8b. The objects to be weighed that have been charged and discharged from the combination hopper 4 </ b> C are loaded into the inner collecting hopper 7.

  Next, in FIG. 2 (h), the objects to be weighed that have been put in the first and third lower hoppers 9 and 11 are discharged.

  Next, in FIG. 2 (i), the objects to be weighed in the inner collecting hopper 7 are put into the second lower hopper 10, and the objects to be weighed in the left and right collecting hoppers 8a and 8b are fed into the first and fourth lower hoppers 9, 12 is input.

  Next, in FIG. 2 (j), among the objects to be weighed simultaneously discharged from the combination hoppers 4A, 4B, 4C, the objects to be weighed discharged from the combination hoppers 4A, 4B are moved to the left and right collective hoppers 8a, 8b. The objects to be weighed that have been charged and discharged from the combination hopper 4 </ b> C are loaded into the inner collecting hopper 7. In addition, the objects to be weighed in the second and fourth lower hoppers 10 and 12 are discharged.

  Next, in FIG. 2 (k), the objects to be weighed in the inner collecting hopper 7 are put into the third lower hopper 11.

  Next, in FIG. 2 (l), the objects to be weighed in the left and right collective hoppers 8a and 8b are put into the second and fourth lower hoppers 10 and 12, respectively. In addition, the objects to be weighed in the first and third lower hoppers 9 and 11 are discharged.

  Thereafter, the transfer cycle from FIG. 2A is repeated.

  FIG. 3 shows opening / closing operations of the gates of the weighing hopper 4 (combination hoppers 4A, 4B, 4C), the collection hoppers 7, 8a, 8b and the first to fourth lower hoppers 9-12 of the combination weigher according to the present embodiment. It is a timing chart which shows an example. In FIG. 3, the “H” level indicates that the gate is in an open state (a state from when the gate is fully opened until it is completely closed), and an “L” level indicates that the gate is in a closed state (completely open). Is in a closed state). Moreover, the transfer of the head part and the tail part of the to-be-measured object discharged | emitted from each hopper is shown with the broken line arrow. The arrows below the times t11, t21, t22, t31, t41, t42, and t51 indicate that these times are times when the discharge of the object to be weighed from the lower hopper (9 to 12) is started. The discharge cycle Td1 is 2/3 of the metering cycle Tw, and the metering cycle Tw is 850 ms in this example. In the weighing cycle Tw, for example, after the object to be weighed in the weighing hopper 4 is discharged after the gate of the weighing hopper 4 starts to be opened, the object to be weighed is supplied from the supply hopper 3 to the weighing hopper 4. This is the time required for the weight of the object to be weighed to be measured after the stabilization time of the weight sensor 41 attached to the weighing hopper 4 has elapsed and the combination process to be completed.

  This timing chart is shown using the following conditions. The shortest time from when the gate of the weighing hopper 4 begins to open until the top of the objects to be discharged from the weighing hopper 4 reaches the collecting hoppers 7, 8a, 8b is 300 ms, and the last of the objects to be weighed is the collecting hopper. The longest time required to reach 7, 8a, 8b is 500 ms, and the time required to be stored in the collective hoppers 7, 8a, 8b from the head to the tail of the objects to be weighed is 200 ms. Further, the minimum time from the start of opening the gates of the collecting hoppers 7, 8a, 8b to the arrival of the weighing objects discharged from the collecting hoppers 7, 8a, 8b reaching the lower hoppers 9-12 is 300 ms. The longest time until the last tail of the object to be weighed reaches each of the lower hoppers 9 to 12 is 500 ms, and the time required from the beginning to the last of the object to be weighed is stored in each of the lower hoppers 9 to 12 Is set to 200 ms. Further, the opening time of the weighing hopper 4 (4A, 4B, 4C), the collecting hoppers 7, 8a, 8b, and the lower hoppers 9 to 12 (the time from the opening of the gate until the closing of the gate through the fully opened state) is set to 350 ms. Yes.

  For example, the objects to be weighed are simultaneously discharged from the combination hoppers 4A, 4B, and 4C at a time (referred to as time t0) that is one weighing cycle time (Tw time) earlier than the time t1. The objects to be weighed discharged from the combination hoppers 4A, 4B, 4C at this time t0 slide down the outer and inner chutes 6a, 6b, 5 and reach the collecting hoppers 8a, 8b, 7. Next, at time t01, the right discharge gate of the inner collecting hopper 7 is opened, and the objects to be weighed in the inner collecting hopper 7 are put into the third lower hopper 11. At the same time t01, the left discharge gate of the left collection hopper 8a is opened, and the objects to be weighed in the left collection hopper 8a are put into the first lower hopper 9. At the same time t01, the right discharge gate of the right collecting hopper 8b is opened, and the objects to be weighed in the right collecting hopper 8b are put into the fourth lower hopper 12. Next, at time t11, the gates of the first and third lower hoppers 9 and 11 are opened, the objects to be weighed in the first lower hopper 9 are put into the left tube 51a, and the objects to be weighed in the third lower hopper 11 are It is put into the right tube 51b.

  At time t1, the objects to be weighed are simultaneously discharged from the combination hoppers 4A, 4B, 4C. The objects to be weighed discharged from the combination hoppers 4A, 4B, 4C at time t1 slide down the outer and inner chutes 6a, 6b, 5 and reach the collecting hoppers 8a, 8b, 7. Next, at time t12, the left discharge gate of the inner collecting hopper 7 is opened, and the objects to be weighed in the inner collecting hopper 7 are put into the second lower hopper 10. Next, at time t21, the gate of the second lower hopper 10 is opened, and the object to be weighed in the second lower hopper 10 is put into the left tube 51a. At the same time, the gate of the fourth lower hopper 12 is opened, discharged from the combination hopper 4A at the previous time t0, and the object to be weighed stored in the fourth lower hopper 12 is put into the right tube 51b. At time t13, the left discharge gate of the left collection hopper 8a is opened, and the objects to be weighed in the left collection hopper 8a are put into the first lower hopper 9. At the same time t13, the left discharge gate of the right collecting hopper 8b is opened, and the objects to be weighed in the right collecting hopper 8b are put into the third lower hopper 11. Next, at time t22, the gates of the first and third lower hoppers 9 and 11 are opened, the objects to be weighed in the first lower hopper 9 are put into the left tube 51a, and the objects to be weighed in the third lower hopper 11 are It is put into the right tube 51b.

  At time t2, the objects to be weighed are simultaneously discharged from the combination hoppers 4A, 4B, 4C. The objects to be weighed discharged from the combination hoppers 4A, 4B, 4C at time t2 slide down the outer and inner chutes 6a, 6b, 5 and reach the collecting hoppers 8a, 8b, 7. Next, at time t23, the left discharge gate of the inner collecting hopper 7 is opened, and the objects to be weighed in the inner collecting hopper 7 are put into the second lower hopper 10. At the same time t23, the left discharge gate of the left collection hopper 8a is opened, and the objects to be weighed in the left collection hopper 8a are put into the first lower hopper 9. At the same time t23, the right discharge gate of the right collecting hopper 8b is opened, and the objects to be weighed in the right collecting hopper 8b are put into the fourth lower hopper 12. Next, at time t31, the gates of the second and fourth lower hoppers 10 and 12 are opened, the objects to be weighed in the second lower hopper 10 are put into the left tube 51a, and the objects to be weighed in the fourth lower hopper 12 are It is put into the right tube 51b.

  At the time t3, the objects to be weighed are discharged from the combination hoppers 4A, 4B, 4C at the same time. The objects to be weighed discharged from the combination hoppers 4A, 4B, 4C at time t3 slide down the outer and inner chutes 6a, 6b, 5 and reach the collecting hoppers 8a, 8b, 7. Next, at time t32, the right discharge gate of the inner collecting hopper 7 is opened, and the objects to be weighed in the inner collecting hopper 7 are put into the third lower hopper 11. Next, at time t41, the gate of the third lower hopper 11 is opened, and the object to be weighed in the third lower hopper 11 is put into the right tube 51b. At the same time, the gate of the first lower hopper 9 is opened and discharged from the combination hopper 4A at the previous time t2, and the object to be weighed stored in the first lower hopper 9 is put into the left tube 51a. At the time t33, the right discharge gate of the left collection hopper 8a is opened, and the objects to be weighed in the left collection hopper 8a are put into the second lower hopper 10. At the same time t33, the right discharge gate of the right collecting hopper 8b is opened, and the objects to be weighed in the right collecting hopper 8b are put into the fourth lower hopper 12. Next, at time t42, the gates of the second and fourth lower hoppers 10 and 12 are opened, the objects to be weighed in the second lower hopper 10 are put into the left tube 51a, and the objects to be weighed in the fourth lower hopper 12 are It is put into the right tube 51b.

  At the time t4, the objects to be weighed are simultaneously discharged from the combination hoppers 4A, 4B, 4C. The objects to be weighed discharged from the combination hoppers 4A, 4B and 4C at time t4 slide down the outer and inner chutes 6a, 6b and 5 and reach the collecting hoppers 8a, 8b and 7. Next, at time t43, the objects to be weighed in the inner collecting hopper 7 are put into the third lower hopper 11, the objects to be weighed in the left collecting hopper 8a are put into the first lower hopper 9, and the objects to be weighed in the right collecting hopper 8b. Is put into the fourth lower hopper 12. At this time t4, the discharge path for the objects to be weighed discharged from the combination hoppers 4A, 4B, 4C and the discharge operations by the collection hoppers 8a, 8b, 7 and the first, third, and fourth lower hoppers 9, 11, 12 are This is the same as that relating to the objects to be weighed discharged from the combination hoppers 4A, 4B, 4C at the time t0.

  In the operation example shown in FIG. 3, for example, the control unit 20 opens the gates of the lower hoppers 11a and 11b in response to the input command signal input from the packaging machine, and the above-described input command signal or the lower hoppers 11a and 11b. Based on the opening timing of the gates, the gates of the collection hoppers 7, 8a, 8b and the weighing hoppers 4 (combination hoppers 4A, 4B, 4C) are configured to open.

  Note that the conditions such as the opening time of the weighing hopper 4, the collecting hoppers 7, 8a, 8b and the lower hoppers 9 to 12 and the arrival time of the objects to be weighed in the case of FIG. is not. For example, depending on the size of the collecting hoppers 7, 8a, 8b, the properties of the objects to be weighed, etc., the minimum time required for the top of the objects to be discharged from the weighing hopper 4 to reach the collecting hoppers 7, 8a, 8b is 300 ms. For example, it may be about 600 ms, and in some cases, it may take longer than 200 ms to be stored in the collective hoppers 7, 8a, 8b from the beginning to the end of the object to be weighed. Further, for example, at time t01, t23, and t42, the objects to be weighed are discharged from the inner collecting hopper 7, the left collecting hopper 8a, and the right collecting hopper 8b at the same time, but the present invention is not limited to this. For example, depending on the time required for the objects to be weighed discharged from the collecting hoppers 7, 8a, 8b to reach the lower hopper to be loaded, the timing of discharging from the collecting hoppers 7, 8a, 8b is set. It may be shifted. Similarly, for example, at time t13 and t33, the objects to be weighed are discharged simultaneously from the left collective hopper 8a and the right collective hopper 8b, but the present invention is not limited to this. For example, the timing of discharging the collective hoppers 8a and 8b from the collective hoppers 8a and 8b is shifted in accordance with the time required for the objects to be weighed discharged from the collective hoppers 8a and 8b to reach the lower hopper to be charged. Also good.

  In the present embodiment, there are collecting hoppers 7, 8 a, 8 b and lower hoppers 9 to 12, and the control unit 20 uses combination processing for obtaining three sets of discharge combinations and combination hoppers for three sets of discharge combinations. At the same time, the combination hopper discharging process for discharging the objects to be weighed is repeatedly performed at the cycle of each weighing cycle Tw, and the opening / closing operation of the gates of the collecting hoppers 7, 8a, 8b and the lower hoppers 9-12 as shown in FIG. By performing the discharge process by controlling the to-be-measured object, the objects to be weighed are simultaneously delivered from the two lower hoppers (9 to 12) to the tubes 51a and 51b as the packaging machine inlets at an interval of 2/3 of the weighing cycle Tw. Can be discharged. Here, after the objects to be weighed are temporarily stored in the lower hoppers 9 to 12 (that is, everything from the first part to the last part of the objects to be weighed in the lower hoppers 9 to 12 is the lower hoppers 9 to 12. After being stored in the tube 51a and 51b, the lower hoppers 9 to 12 are directly loaded into the tubes 51a and 51b, which are the packaging machine loading ports, so that the objects to be weighed fall in the tubes 51a and 51b in a lump. Therefore, even when the packaging machine is operated at a high speed and the weighing cycle Tw is short, a sufficient distance can be maintained between the first object to be weighed and the object to be weighed next in the same tube. It is possible to prevent biting of the object to be weighed when the horizontal sealing is performed by the horizontal sealing machine 55 (see FIG. 6) of the packaging machine.

  In the present embodiment, for example, in FIG. 2C, the discharge direction of the objects to be weighed in the inner collecting hopper 7 is reversed, the left discharge gate is opened, and the objects to be weighed are input to the second lower hopper 10. Then, the process may proceed to the process of FIG. In this case, FIG. 2D to FIG. 2I are unnecessary, but the frequency of use of the second and fourth lower hoppers 10 and 12 is twice the frequency of use of the first and third lower hoppers 9 and 11. become. Although it is possible to change the operation in addition to this, the four lower hoppers 9 to 12 can be made uniform by operating so as to repeat the processing of FIGS. 2 (a) to 2 (l) as described above. It is possible to prevent the consumption and damage of some lower hoppers from becoming significant.

(Embodiment 2)
The combination weigher according to Embodiment 2 of the present invention has the same configuration as the combination weigher shown in FIGS. 1A to 1C, but the operation is different. Here, description will be made with reference to FIGS. 1A to 1C, but the description of the configuration of FIGS.

  The combination weigher of the present embodiment is different from the first embodiment in the timing of the gate opening / closing operation of the collecting hoppers 7, 8a, 8b and the first to fourth lower hoppers 9-12, and other operations are performed. This is the same as in the case of Form 1. Therefore, the control unit 20 obtains three sets of discharge combinations by performing the same combination processing as in the first embodiment, and simultaneously measures the combination from the combination hoppers 4A, 4B, and 4C selected as the three sets of discharge combinations. The product is discharged (combination hopper discharge process). Here, for the combination hopper 4A, the object to be weighed is discharged to the outer chute 6a. For the combination hopper 4B, the object to be weighed is discharged to the outer chute 6b. The object to be weighed is discharged to the chute 5.

  Below the combination weigher of this embodiment, for example, a twin-type packaging machine provided with two packaging units shown in FIG. 6 is arranged as in the case of the first embodiment. Here, the tube 51 of one packaging unit (first packaging unit) becomes one tube 51a of FIG. 1A, and the tube 51 of the other packaging unit (second packaging unit) is FIG. 1A. The other tube 51b. The packaging machine used in the present embodiment is configured such that the first packaging unit and the second packaging unit operate with a half cycle shift.

  Next, the operation including the collecting hoppers 7, 8a, 8b and the first to fourth lower hoppers 9-12 will be described. Hereinafter, the collection hopper 7 is also referred to as an inner collection hopper, the collection hopper 8a is also referred to as a left collection hopper, and the collection hopper 8b is also referred to as a right collection hopper.

  4 (a) to 4 (l) are diagrams showing the concept of an object to be weighed cycle by the operation of the combination weigher in the present embodiment. Detailed operation timing will be described later with reference to FIG. In FIG. 4, the movement of the object to be weighed is indicated by an arrow, and the movement destination of the object to be weighed and the state where the object to be weighed is stored is indicated by a black circle. Further, the chutes 13 to 16 are omitted and shown in a simplified manner.

  The transfer cycle of the objects to be weighed in FIGS. 4A to 4L is repeatedly performed.

  In FIG. 4A, among the objects to be weighed simultaneously from the combination hoppers 4A, 4B, 4C, the objects to be weighed discharged from the combination hoppers 4A, 4B are thrown into the left and right collecting hoppers 8a, 8b. The objects to be weighed discharged from the combination hopper 4C are put into the inner collecting hopper 7. In addition, the object to be weighed that has been input to the second lower hopper 10 in the previous transfer cycle is discharged, and the object that has been input to the third lower hopper 11 in the previous transfer cycle is stored. It is up to.

  Next, in FIG. 4B, the objects to be weighed in the inner collecting hopper 7 are put into the second lower hopper 10, and the objects to be weighed in the left and right collecting hoppers 8a and 8b are fed into the first and fourth lower hoppers 9, 12 is input. In addition, the object to be weighed in the third lower hopper 11 is discharged.

  Next, in FIG.4 (c), the to-be-measured object of the 1st lower stage hopper 9 is discharged | emitted.

  Next, in FIG. 4D, among the objects to be weighed simultaneously discharged from the combination hoppers 4A, 4B, 4C, the objects weighed discharged from the combination hoppers 4A, 4B are moved to the left and right collecting hoppers 8a, 8b. The objects to be weighed that have been charged and discharged from the combination hopper 4 </ b> C are loaded into the inner collecting hopper 7. In addition, the object to be weighed in the fourth lower hopper 12 is discharged.

  Next, in FIG. 4 (e), the objects to be weighed in the inner collecting hopper 7 are put into the third lower hopper 11, and the objects to be weighed in the left and right collecting hoppers 8a and 8b are fed into the first and fourth lower hoppers 9, 12 is input. In addition, the object to be weighed in the second lower hopper 10 is discharged.

  Next, in FIG.4 (f), the to-be-measured object of the 3rd lower stage hopper 11 is discharged | emitted.

  Next, in FIG. 4G, among the objects to be weighed simultaneously discharged from the combination hoppers 4A, 4B, 4C, the objects weighed discharged from the combination hoppers 4A, 4B are transferred to the left and right collective hoppers 8a, 8b. The objects to be weighed that have been charged and discharged from the combination hopper 4 </ b> C are loaded into the inner collecting hopper 7. In addition, the objects to be weighed in the first lower hopper 9 are discharged.

  Next, in FIG. 4 (h), the objects to be weighed in the inner collecting hopper 7 are put into the second lower hopper 10, and the objects to be weighed in the left and right collecting hoppers 8a and 8b are fed into the first and third lower hoppers 9, 11 is input. In addition, the object to be weighed in the fourth lower hopper 12 is discharged.

  Next, in FIG. 4I, the object to be weighed in the second lower hopper 10 is discharged.

  Next, in FIG. 4 (j), among the objects to be weighed simultaneously discharged from the combination hoppers 4A, 4B, 4C, the objects to be weighed discharged from the combination hoppers 4A, 4B are moved to the left and right collective hoppers 8a, 8b. The objects to be weighed that have been charged and discharged from the combination hopper 4 </ b> C are loaded into the inner collecting hopper 7. In addition, the object to be weighed in the third lower hopper 11 is discharged.

  Next, in FIG. 4 (k), the objects to be weighed in the inner collecting hopper 7 are put into the third lower hopper 11, and the objects to be weighed in the left and right collecting hoppers 8a and 8b are put in the second and fourth lower hoppers 10, 12 is input. In addition, the objects to be weighed in the first lower hopper 9 are discharged.

  Next, in FIG. 4L, the object to be weighed in the fourth lower hopper 12 is discharged.

  Thereafter, the transfer cycle from FIG. 4 (a) is repeated.

  FIG. 5 shows the gate opening / closing operations of the weighing hopper 4 (combination hoppers 4A, 4B, 4C), the collection hoppers 7, 8a, 8b and the first to fourth lower hoppers 9-12 of the combination weigher of this embodiment. It is a timing chart which shows an example. In FIG. 5, the “H” level indicates that the gate is in an open state (a state from when the gate is fully opened until it is completely closed), and an “L” level indicates that the gate is in a closed state (completely open). Is in a closed state). Moreover, the transfer of the head part and the tail part of the to-be-measured object discharged | emitted from each hopper is shown with the broken line arrow. Times t15, t16, t17, t25, t26, t27, t35, t36, t37, t45, t46, t47, t55, and t56 are the times when discharge of the objects to be weighed starts from the lower hopper (9 to 12), respectively. Yes, the left circled below the time indicates that the time is the discharge start time of one of the first and second lower hoppers 9 and 10 on the left, and the right circled is The time is the discharge start time of one of the third and fourth lower hoppers 11 and 12 on the right side. The discharge cycle Td2 is 1/3 of the weighing cycle Tw, and the weighing cycle Tw is 850 ms in this example. In the weighing cycle Tw, for example, after the object to be weighed in the weighing hopper 4 is discharged after the gate of the weighing hopper 4 starts to be opened, the object to be weighed is supplied from the supply hopper 3 to the weighing hopper 4. This is the time required for the weight of the object to be weighed to be measured after the stabilization time of the weight sensor 41 attached to the weighing hopper 4 has elapsed and the combination process to be completed.

  In FIG. 5, conditions such as the opening time of the weighing hopper 4, the collecting hoppers 7, 8 a, 8 b and the lower hoppers 9 to 12 and the arrival time of the objects to be weighed are shown using the same conditions as in FIG. 3. Yes.

  For example, the objects to be weighed are simultaneously discharged from the combination hoppers 4A, 4B, 4C at time t1. The objects to be weighed discharged from the combination hoppers 4A, 4B, 4C at time t1 slide down the outer and inner chutes 6a, 6b, 5 and reach the collecting hoppers 8a, 8b, 7. Next, at the time t18, the left discharge gate of the inner collecting hopper 7 is opened, and the objects to be weighed in the inner collecting hopper 7 are put into the second lower hopper 10. At the same time t18, the left discharge gate of the left collection hopper 8a is opened, and the objects to be weighed in the left collection hopper 8a are put into the first lower hopper 9. At the same time t18, the right discharge gate of the right collecting hopper 8b is opened, and the objects to be weighed in the right collecting hopper 8b are put into the fourth lower hopper 12. Next, the gate of the first lower hopper 9 is opened at time t26, and the object to be weighed in the first lower hopper 9 is put into the left tube 51a, and then the gate of the fourth lower hopper 12 is opened at time t27. Then, the object to be weighed in the fourth lower hopper 12 is put into the right tube 51b, and then the gate of the second lower hopper 10 is opened at time t35, and the object to be weighed in the second lower hopper 10 is left tube. 51a.

  At time t2, the objects to be weighed are simultaneously discharged from the combination hoppers 4A, 4B, 4C. The objects to be weighed discharged from the combination hoppers 4A, 4B, 4C at time t2 slide down the outer and inner chutes 6a, 6b, 5 and reach the collecting hoppers 8a, 8b, 7. Next, the right side discharge gate of the inner collecting hopper 7 is opened at time t28, and the objects to be weighed in the inner collecting hopper 7 are put into the third lower hopper 11. At the same time t28, the left discharge gate of the left collection hopper 8a is opened, and the objects to be weighed in the left collection hopper 8a are put into the first lower hopper 9. At the same time t28, the right discharge gate of the right collecting hopper 8b is opened, and the objects to be weighed in the right collecting hopper 8b are put into the fourth lower hopper 12. Next, the gate of the third lower hopper 11 is opened at the time t36, the object to be weighed in the third lower hopper 11 is put into the right tube 51b, and then the gate of the first lower hopper 9 is opened at the time t37. Then, the object to be weighed in the first lower hopper 9 is put into the left tube 51a, and then the gate of the fourth lower hopper 12 is opened at time t45, and the object to be weighed in the fourth lower hopper 12 is moved to the right tube. 51b.

  At the time t3, the objects to be weighed are discharged from the combination hoppers 4A, 4B, 4C at the same time. The objects to be weighed discharged from the combination hoppers 4A, 4B, 4C at time t3 slide down the outer and inner chutes 6a, 6b, 5 and reach the collecting hoppers 8a, 8b, 7. Next, at time t38, the left discharge gate of the inner collecting hopper 7 is opened, and the objects to be weighed in the inner collecting hopper 7 are put into the second lower hopper 10. At the same time t38, the left discharge gate of the left collection hopper 8a is opened, and the objects to be weighed in the left collection hopper 8a are put into the first lower hopper 9. At the same time t38, the left discharge gate of the right collecting hopper 8b is opened, and the objects to be weighed in the right collecting hopper 8b are put into the third lower hopper 11. Next, the gate of the second lower hopper 10 is opened at time t46, the object to be weighed in the second lower hopper 10 is put into the left tube 51a, and then the gate of the third lower hopper 11 is opened at time t47. Then, the object to be weighed in the third lower hopper 11 is put into the right tube 51b, and then the gate of the first lower hopper 9 is opened at time t55, and the object to be weighed in the first lower hopper 9 is left tube. 51a.

  At the time t4, the objects to be weighed are simultaneously discharged from the combination hoppers 4A, 4B, 4C. The objects to be weighed discharged from the combination hoppers 4A, 4B and 4C at time t4 slide down the outer and inner chutes 6a, 6b and 5 and reach the collecting hoppers 8a, 8b and 7. Next, at the time t <b> 48, the right side discharge gate of the inner collecting hopper 7 is opened, and the objects to be weighed in the inner collecting hopper 7 are put into the third lower hopper 11. At the same time t48, the right discharge gate of the left collection hopper 8a is opened, and the objects to be weighed in the left collection hopper 8a are put into the second lower hopper 10. At the same time t48, the right discharge gate of the right collecting hopper 8b is opened, and the objects to be weighed in the right collecting hopper 8b are put into the fourth lower hopper 12. Next, at time t56, the gate of the fourth lower hopper 12 is opened, and the object to be weighed in the fourth lower hopper 12 is put into the right tube 51b. The gate of the second lower hopper 10 is opened at the next discharge time (time ta) after the time Td2 has elapsed from time t56, and the object to be weighed in the second lower hopper 10 is put into the left tube 51a. Furthermore, the gate of the third lower hopper 11 is opened at the next discharge time (time tb) after the elapse of time Td2 from the discharge time ta, and the object to be weighed in the third lower hopper 11 is transferred to the right tube 51b. It is thrown in. The operations at these discharge times t56, ta, and tb are the same as the operations at times t16, t17, and t25.

  In the operation example shown in FIG. 5, for example, the control unit 20 opens the gates of the lower hoppers 11a and 11b in response to the input command signal input from the packaging machine, and the above input command signal or the lower hoppers 11a and 11b. Based on the opening timing of the gates, the gates of the collection hoppers 7, 8a, 8b and the weighing hoppers 4 (combination hoppers 4A, 4B, 4C) are configured to open.

  The conditions such as the opening time of the weighing hopper 4, the collecting hoppers 7, 8a, 8b and the lower hoppers 9 to 12 and the arrival time of the object to be weighed in the case of FIG. is not. For example, depending on the size of the collecting hoppers 7, 8a, 8b, the properties of the objects to be weighed, etc., the minimum time required for the top of the objects to be discharged from the weighing hopper 4 to reach the collecting hoppers 7, 8a, 8b is 300 ms. For example, it may be about 600 ms, and in some cases, it may take longer than 200 ms to be stored in the collective hoppers 7, 8a, 8b from the beginning to the end of the object to be weighed. Further, for example, at time t18, t28, t38, t48, etc., the objects to be weighed are discharged simultaneously from the inner collecting hopper 7, the left collecting hopper 8a, and the right collecting hopper 8b. However, the present invention is not limited to this. For example, depending on the time required for the objects to be weighed discharged from the collecting hoppers 7, 8a, 8b to reach the lower hopper to be loaded, the timing of discharging from the collecting hoppers 7, 8a, 8b is set. It may be shifted.

  In the present embodiment, there are collecting hoppers 7, 8 a, 8 b and lower hoppers 9 to 12, and the control unit 20 uses combination processing for obtaining three sets of discharge combinations and combination hoppers for three sets of discharge combinations. The combination hopper discharge process for discharging the objects to be weighed at the same time is repeatedly performed at the cycle of each weighing cycle Tw, and the opening / closing operation of the gates of the collective hoppers 7, 8a, 8b and the lower hoppers 9-12 as shown in FIG. Is controlled to discharge the objects to be weighed in order from the four lower hoppers 9 to 12 at intervals of 1/3 of the weighing cycle Tw, and the tubes 51a and 51b which are the packaging machine inlets. The object to be weighed can be input alternately. Here, after the objects to be weighed are temporarily stored in the lower hoppers 9 to 12 (that is, everything from the first part to the last part of the objects to be weighed in the lower hoppers 9 to 12 is the lower hoppers 9 to 12. After being stored in the tube 51a and 51b, the lower hoppers 9 to 12 are directly loaded into the tubes 51a and 51b, which are the packaging machine loading ports, so that the objects to be weighed fall in the tubes 51a and 51b in a lump. Therefore, even when the packaging machine is operated at a high speed and the weighing cycle Tw is short, a sufficient distance can be maintained between the first object to be weighed and the object to be weighed next in the same tube. It is possible to prevent biting of the object to be weighed when the horizontal sealing is performed by the horizontal sealing machine 55 (see FIG. 6) of the packaging machine.

  In the present embodiment, for example, in FIG. 4 (f), a change is made so that the object to be weighed is discharged from the fourth lower hopper 12 instead of the third lower hopper 11, and then to FIG. 4 (a). Returning to FIG. 4 (a), the processing is changed so that the object to be weighed is discharged from the first lower hopper 9 instead of the second lower hopper 10, and the changed processing of FIGS. 4 (a) to 4 (f) is performed. It may be repeated. In this case, although FIG. 4G to FIG. 4L are not necessary, the usage frequency of the first and fourth lower hoppers 9 and 12 is twice the usage frequency of the second and third lower hoppers 10 and 11. become. Further, for example, in FIG. 4 (l), a change is made so that the object to be weighed is discharged from the third lower hopper 11 instead of the fourth lower hopper 12, and then the process returns to FIG. 4 (g), and FIG. ), The second object can be discharged from the second lower hopper 10 instead of the first lower hopper 9, and the modified processes of FIGS. 4 (g) to 4 (l) may be repeated. . In this case, although FIG. 4A to FIG. 4F are unnecessary, the usage frequency of the second and third lower hoppers 10 and 11 is twice the usage frequency of the first and fourth lower hoppers 9 and 12. become. It is possible to change the operation in addition to these, but the four lower hoppers 9 to 12 are equally made by operating so as to repeat the processing of FIGS. 4A to 4L as described above. It is possible to prevent the consumption and damage of some lower hoppers from becoming significant.

  In the first and second embodiments, the collecting hoppers 8a and 8b are arranged at a position higher than the collecting hopper 7, so that the collecting hoppers 8a and 8b are arranged at the same height as the collecting hopper 7, for example. Compared with the case where the weighing object slides on the outer chutes 6a and 6b, the sliding distance when the weighing object slides on the outer chutes 6a and 6b can be shortened, and the weighing object discharged from the combination hoppers 4A and 4B moves on the outer chutes 6a and 6b. The time required to reach the sliding-off collective hoppers 8a and 8b may be shortened to be approximately the same as the time required for the objects to be weighed discharged from the combination hopper 4C to reach the slide-off collective hopper 7 on the inner chute 5. Is possible.

  In the first and second embodiments, the arrangement shape of the weighing hoppers 4 is circular. However, the weighing hoppers 4 are not limited to circles, but are circular, including, for example, ellipses, rectangles, and convex polygons such as rectangles. It is also possible to have a configuration in which The supply hopper 3, the linear feeder 2, the inner chute 5, the outer chutes 6 a, 6 b, and the like need only be arranged corresponding to the arrangement shape of the weighing hopper 4.

  In the first and second embodiments, the example in which the weighing hopper 4 is used as the combination hopper in which the measurement value of the supplied object to be weighed is used for the combination calculation is shown. It is not limited to. For example, each weighing hopper is separated into two chambers, and the objects to be weighed are supplied to each chamber, and the weighing values of the objects to be weighed supplied to the respective chambers are used for the combination calculation. May be selected as the discharge combination. In this case, each chamber corresponds to a combination hopper. In addition to this, the hopper configuration such as a combination hopper may be variously changed.

  Moreover, although the control part 20 is comprised by the microcomputer etc., for example, it does not necessarily need to be comprised with a single control apparatus, the some control apparatus is distributedly arranged and those cooperate, and those of a measuring device cooperate. It may be configured to control the operation.

  The combination weigher according to the present invention is useful as a combination weigher that can be used for a twin-type packaging machine operated at high speed.

(A) is the schematic schematic diagram of the partial cross section which looked at the combination weigher of embodiment of this invention from the side, (b) is the outline which looked at the collection chute and weighing hopper of the combination weigher from the upper part It is a schematic diagram, (c) is a schematic diagram of the lower hopper of the combination weigher viewed from above. (A)-(l) is a figure which shows the concept of the transfer cycle of the to-be-measured object by operation | movement of the combination weigher in Embodiment 1 of this invention. It is a timing chart which shows an example of the opening / closing operation | movement of each gate of the measurement hopper of the combination scale of Embodiment 1 of this invention, a collection hopper, and a lower stage hopper. (A)-(l) is a figure which shows the concept of the transfer cycle of the to-be-measured object by operation | movement of the combination weigher in Embodiment 2 of this invention. It is a timing chart which shows an example of the opening / closing operation | movement of each gate of the measurement hopper of the combination scale of Embodiment 2 of this invention, a collection hopper, and a lower stage hopper. It is a schematic diagram which shows an example of the packaging unit of the packaging machine arrange | positioned under the combination scale of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dispersing feeder 2 Linear feeder 3 Feeding hopper 4 Weighing hopper 5 Inner chute 6a, 6b Outer chute 7, 8a, 8b Collecting hopper 9-12 Lower hopper 20 Control part

Claims (7)

A hopper comprising a plurality of combination hoppers arranged in a ring and configured to selectively discharge the objects to be weighed respectively in two directions of the annular inner direction and the outer direction. Groups,
An inner chute that is disposed below the hopper group, collects the objects to be weighed discharged from the combination hopper of the hopper group in the inner direction, and discharges them from a lower discharge port;
The hopper group is provided corresponding to the combination hopper of the first group of the first and second groups divided into two, and from the combination hopper of the first group, the A first outer chute that collects the objects to be weighed in the outer direction and discharges them from the lower outlet;
The second group is provided corresponding to the combination hopper, and the objects to be weighed discharged from the combination hopper in the second group in the outward direction are collected and discharged from a lower discharge port. Two outer chutes,
An inner collecting hopper that is disposed below the discharge port of the inner chute and can temporarily discharge the object to be weighed discharged from the inner chute, and then can discharge it;
A first outer collecting hopper disposed below a discharge port of the first outer chute and capable of temporarily discharging an object to be weighed discharged from the first outer chute and then discharging the object to be weighed;
A second outer collecting hopper that is disposed below a discharge port of the second outer chute and can temporarily discharge the object to be weighed discharged from the second outer chute, and then can discharge the object.
A first disposition disposed below the first outer collecting hopper, temporarily holding the objects to be discharged from the first outer collecting hopper, and then directly discharging it to the first packaging machine inlet A lower hopper,
After temporarily holding the objects to be weighed that are disposed below the inner collecting hopper and the first outer collecting hopper and are discharged from either the inner collecting hopper or the first outer collecting hopper, A second lower hopper for direct discharge to the packaging machine input of
After temporarily holding the objects disposed below the inner collecting hopper and the second outer collecting hopper and discharged from either the inner collecting hopper or the second outer collecting hopper, the second A third lower hopper for direct discharge to the packaging machine inlet;
A fourth unit disposed below the second outer collecting hopper and temporarily holds an object to be discharged from the second outer collecting hopper, and then directly discharges it to the second packaging machine inlet. Lower hopper,
Control means,
The control means includes
The first outer discharge combination which is a combination of the combination hoppers of the first group, in which the total weight value of the supplied objects to be weighed is within a predetermined weight range, and the weight of the object to be weighed being supplied The sum of the weight values of the second outer discharge combination that is a combination of the combination hoppers of the second group and the total weight value of the objects to be weighed is the predetermined weight range. The combination process for obtaining three discharge combinations including the inner discharge combination which is a combination of the combination hoppers of the hopper group to be included so as not to include the same combination hopper is repeatedly performed at a predetermined cycle. With
A process of discharging the objects to be weighed from the combination hopper of the first outer discharge combination obtained by the combination process to the first outer chute, and the first of the combination from the combination hopper of the second outer discharge combination. A combination hopper discharge process in which the process of discharging the object to be weighed to the outer chute 2 and the process of discharging the object to be weighed from the combination hopper of the inner discharge combination to the inner chute are performed at the predetermined cycle. Repeated,
Corresponding to the two consecutive combination hopper discharge processes, the objects to be weighed are discharged twice from each of the inner collecting hopper, the first outer collecting hopper, and the second outer collecting hopper, A total of three objects to be weighed are discharged from the first lower hopper and the second lower hopper to the first packaging machine input port, and a total of three from the third lower hopper and the fourth lower hopper. Discharge for controlling the inner collecting hopper, the first and second outer collecting hoppers, and the first to fourth lower hoppers so that the objects to be weighed are discharged to the second packaging machine inlet. A combination weigher configured to perform control processing.   When the control means discharges the object to be weighed from the first to fourth lower hoppers, it simultaneously discharges the object from any one of the first lower hopper and the second lower hopper. The processing for discharging an object to be weighed from any one of the third lower hopper and the fourth lower hopper is performed at an interval of 2/3 of the predetermined period. The combination weigher according to 1. The inner collecting hopper, the first outer collecting hopper, and the second outer collecting hopper can selectively discharge objects to be weighed in a first direction and a second direction, respectively.
The objects to be weighed discharged from the inner collecting hopper in the first direction are thrown into the second lower hopper, and the objects to be weighed discharged from the inner collecting hopper in the second direction are the third The objects to be weighed that are thrown into the lower hopper and discharged from the first outer collecting hopper in the first direction are thrown into the first lower hopper, and from the first outer collecting hopper to the second direction. The objects to be weighed discharged into the second lower hopper are put into the second lower hopper, and the objects weighed in the first direction from the second outer collecting hopper are put into the third lower hopper, The objects to be weighed discharged from the second outer collecting hopper in the second direction are configured to be put into the fourth lower hopper,
The two continuous discharge control processes performed by the control means are:
(4k + 1) th time (k is an integer equal to or greater than 0) The hopper discharge process for combination causes the objects to be weighed that have been input to the inner collective hopper to enter the third lower hopper from the inner collective hopper. In order to load the objects to be weighed that have been thrown into the first outer collecting hopper by the process of discharging the objects to be measured in the direction 2 and the (4k + 1) -th combination hopper discharging process into the first lower hopper. The objects to be weighed put into the second outer collecting hopper by the process of discharging the objects to be weighed in the first direction from the first outer collecting hopper and the (4k + 1) th combination hopper discharging process A first process of performing a process of discharging the objects to be weighed in the second direction from the second outer collecting hopper,
The object to be weighed put into the first lower hopper by the first processing is discharged from the first lower hopper to the first packaging machine inlet, and at the same time, the third processing by the first processing. A second process for discharging the object to be weighed put into the lower hopper from the third lower hopper to the second packaging machine inlet;
A third process for discharging an object to be weighed that has been input to the fourth lower hopper by the first process from the fourth lower hopper to the second packaging machine input;
In order to load the objects to be weighed put into the inner collecting hopper by the (4k + 2) -th combination hopper discharging process, the objects to be weighed in the first direction from the inner collecting hopper A fourth process to be discharged;
A process of discharging the object to be weighed input to the second lower hopper by the fourth process from the second lower hopper to the first packaging machine input port simultaneously with the third process. 5 processing,
In order to load the objects to be weighed put into the first outer collecting hopper by the (4k + 2) -th combination hopper discharging process from the first outer collecting hopper to the first lower hopper, In order to discharge the objects to be weighed into the second lower hopper by the process of discharging the objects in the direction and the (4k + 2) -th combination hopper discharging process into the third lower hopper. A sixth process for performing a process of discharging the objects to be weighed from the second outer collecting hopper in the first direction;
The object to be weighed put into the first lower hopper by the sixth processing is discharged from the first lower hopper to the first packaging machine inlet, and at the same time, the third processing by the sixth processing. A seventh process for discharging an object to be weighed charged into the lower hopper from the third lower hopper to the second packaging machine inlet;
In order to load the objects to be weighed put into the inner collecting hopper by the (4k + 3) -th combination hopper discharging process, the objects to be weighed in the first direction from the inner collecting hopper The first outer collective hopper for feeding the objects to be weighed put into the first outer collective hopper by the discharge process and the (4k + 3) -th combination hopper discharge process. To the fourth lower hopper, the process of discharging the object to be weighed in the first direction and the (4k + 3) -th combination hopper discharging process into the second outer collecting hopper. An eighth process of performing a process of discharging the objects to be weighed in the second direction from the second outer collecting hopper for charging;
The object to be weighed that has been input to the second lower hopper by the eighth process is discharged from the second lower hopper to the first packaging machine input port, and at the same time, the fourth process is performed by the eighth process. A ninth process for discharging the object to be weighed put into the lower hopper from the fourth lower hopper to the second packaging machine inlet;
A tenth process for discharging an object to be weighed that has been input to the first lower hopper by the eighth process from the first lower hopper to the first packaging machine input;
In order to load the objects to be weighed that has been thrown into the inner collecting hopper by the (4k + 4) -th combination hopper discharge process, the objects to be weighed in the second direction from the inner collecting hopper An eleventh process for discharging;
A process of discharging the object to be weighed put into the third lower hopper by the eleventh process from the third lower hopper to the second packaging machine inlet is performed simultaneously with the tenth process. 12 processes,
In order to put the objects to be weighed put into the first outer collecting hopper by the (4k + 4) -th combination hopper discharging process from the first outer collecting hopper to the second lower hopper, In order to put the objects to be weighed that have been thrown into the second outer collecting hopper by the (4k + 4) -th combination hopper discharging process into the fourth lower hopper. A thirteenth process for performing a process of discharging an object to be weighed in a second direction from a second outer collecting hopper;
The object to be weighed put into the second lower hopper by the thirteenth processing is discharged from the second lower hopper to the first packaging machine inlet, and at the same time, the fourth processing by the thirteenth processing. And a fourteenth process for discharging the object to be weighed charged into the lower hopper from the fourth lower hopper to the second packaging machine inlet,
Each of the second process, the third and fifth processes, the seventh process, the ninth process, the tenth and twelfth processes, and the fourteenth process. The combination weigher according to claim 1, wherein the interval is set at a time interval of 2/3 of the predetermined period.   A process for discharging the object to be weighed from any one of the first lower hopper and the second lower hopper when discharging the object from the first to fourth lower hoppers; The process of discharging the object to be weighed from any one of the third lower hopper and the fourth lower hopper is alternately performed at a time interval of 1/3 of the predetermined period. The combination weigher according to claim 1. The inner collecting hopper, the first outer collecting hopper, and the second outer collecting hopper can selectively discharge objects to be weighed in a first direction and a second direction, respectively.
The objects to be weighed discharged from the inner collecting hopper in the first direction are thrown into the second lower hopper, and the objects to be weighed discharged from the inner collecting hopper in the second direction are the third The objects to be weighed that are thrown into the lower hopper and discharged from the first outer collecting hopper in the first direction are thrown into the first lower hopper, and from the first outer collecting hopper to the second direction. The objects to be weighed discharged into the second lower hopper are put into the second lower hopper, and the objects weighed in the first direction from the second outer collecting hopper are put into the third lower hopper, The objects to be weighed discharged from the second outer collecting hopper in the second direction are configured to be put into the fourth lower hopper,
The two continuous discharge control processes performed by the control means are:
The first direction from the inner collecting hopper to load the objects to be weighed put into the inner lower hopper by the n-th (n is a positive integer) combination hopper discharge process into the second lower hopper In order to discharge the object to be weighed into the first lower hopper by the process of discharging the object to be weighed and the n-th combination hopper discharging process into the first outer hopper. The process of discharging the objects to be weighed from the outer collecting hopper in the first direction and the object to be weighed that has been thrown into the second outer collecting hopper by the n-th combination hopper discharging process into the fourth lower hopper A first process of performing a process of discharging the objects to be weighed in the second direction from the second outer collecting hopper,
A second process for discharging an object to be weighed that has been input to the first lower hopper by the first process from the first lower hopper to the first packaging machine input;
After the second process, a third process for discharging an object to be weighed that has been input to the fourth lower hopper by the first process from the fourth lower hopper to the second packaging machine input port. When,
After the third process, a fourth process for discharging an object to be weighed that has been input to the second lower hopper by the first process from the second lower hopper to the first packaging machine input port. When,
In order to load the objects to be weighed that have been thrown into the inner collective hopper by the (n + 1) -th combination hopper discharge process, the objects to be weighed from the inner collective hopper to the second direction are loaded. The first outer collective hopper for feeding the objects to be weighed put into the first outer collective hopper by the discharge process and the (n + 1) -th combination hopper discharge process into the first lower hopper To the fourth lower hopper, the process of discharging the objects to be weighed in the first direction and the (n + 1) -th combination hopper discharging process into the second outer collecting hopper. A fifth process for performing a process of discharging the objects to be weighed in the second direction from the second outer collecting hopper for charging;
A sixth process for discharging the object to be weighed that has been input to the third lower hopper by the fifth process from the third lower hopper to the second packaging machine input;
After the sixth process, a seventh process for discharging an object to be weighed that has been input to the first lower hopper by the fifth process from the first lower hopper to the first packaging machine input port. When,
After the seventh process, an eighth process for discharging an object to be weighed that has been input to the fourth lower hopper by the fifth process from the fourth lower hopper to the second packaging machine input port. When,
In order to load the objects to be weighed that have been thrown into the inner collecting hopper by the (n + 2) -th combination hopper discharging process, the objects to be weighed from the inner collecting hopper in the first direction are loaded. The first outer collective hopper for feeding the objects to be weighed put into the first outer collective hopper by the discharge process and the (n + 2) -th combination hopper discharge process. To the third lower hopper, the object to be weighed put into the second outer collective hopper by the process of discharging the object to be weighed in the first direction and the (n + 2) th combination hopper discharging process. A ninth process for performing a process of discharging the objects to be weighed in the first direction from the second outer collecting hopper for charging;
A tenth process for discharging an object to be weighed that has been input to the second lower hopper by the ninth process from the second lower hopper to the first packaging machine input;
After the tenth process, an eleventh process for discharging an object to be weighed that has been input to the third lower hopper by the ninth process from the third lower hopper to the second packaging machine input port. When,
After the eleventh process, a twelfth process for discharging an object to be weighed that has been input to the first lower hopper by the ninth process from the first lower hopper to the first packaging machine input port. When,
In order to load the objects to be weighed that have been thrown into the inner collective hopper by the (n + 3) -th combination hopper discharge process, the objects to be weighed in the second direction from the inner collective hopper. The first outer collective hopper for feeding the objects to be weighed put into the first outer collective hopper by the discharge process and the (n + 3) -th combination hopper discharge process into the second lower hopper To the fourth lower hopper, the process of discharging the object from the second direction to the second outer hopper by the (n + 3) -th combination hopper discharge process. A thirteenth process for performing a process of discharging the objects to be weighed in the second direction from the second outer collecting hopper for charging;
A fourteenth process for discharging the object to be weighed that has been input to the fourth lower hopper by the thirteenth process from the fourth lower hopper to the second packaging machine input;
After the fourteenth process, a fifteenth process for discharging the object to be weighed put into the second lower hopper by the thirteenth process from the second lower hopper to the first packaging machine inlet. When,
After the fifteenth process, a sixteenth process for discharging the object to be weighed that has been input to the third lower hopper by the thirteenth process from the third lower hopper to the second packaging machine input port. And
The interval of each of the second, third, fourth, sixth, seventh, eighth, tenth, eleventh, twelfth, fourteenth, fifteenth and sixteenth processes is set to 1 of the predetermined period. The combination weigher according to claim 1, wherein the combination weigher is configured to be performed at an interval of / 3 time. The control means includes
With respect to each of the first to fourth lower hoppers, all of the objects to be weighed that are put into the lower hopper are stored in the lower hopper after being stored in the lower hopper. The combination weigher according to claim 1, wherein the combination weigher is configured to discharge a weighing object. The first and second outer collecting hoppers are disposed higher than the inner collecting hopper;
A first chute for guiding the objects to be weighed discharged from the first outer collecting hopper in the first direction to the first lower hopper;
A second chute for guiding an object to be discharged from the first outer collecting hopper in the second direction to the second lower hopper;
A third chute for guiding the objects to be weighed discharged from the second outer collecting hopper in the first direction to the third lower hopper;
The combination weigher according to claim 1, further comprising a fourth chute for guiding an object to be discharged from the second outer collecting hopper in the second direction to the fourth lower hopper.

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