JP2017026437A - Combination weighing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combination weighing apparatus capable of managing weighed objects obtained by plural times of combination weighing while associating the same and thereby capable of identifying a malfunction occurring in a combination weighing machine.SOLUTION: A combination weighing apparatus includes: an upstream timing hopper 10 which allows weighed objects to be retained therein; a downstream timing hopper group which temporarily retains the weighed objects discharged from the upstream timing hopper 10; and a control unit which controls opening/closing operation of the downstream timing hopper group and causes the weighed objects retained in the downstream timing hopper group to be discharged into a container packaging positioned near a discharge port of the downstream timing hopper group. Regarding the weighed object for the Nth packaging container among the packaging containers, when it is determined that weighed objects constituting a part of a preset target mass value is retained in the downstream timing hopper group and also that weighed object constituting a remainder of the mass value is retained in the upstream timing hopper 10, the control unit allows the weighed objects retained in the downstream timing hopper group to be dischargeable into the Nth container packaging.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a combination weighing machine that divides a target mass value into a plurality of times and puts it into a container and packaging.

  Patent Document 1 discloses a combination weighing device. In this combination weighing device, an object to be weighed that gives a rough filling weight value equal to or less than a target weight value is charged into a container at a first point via a roughing chute, and further, a target weight value, a rough filling weight value, An object to be weighed that gives a corrected filling weight value that is the difference between the two is put into a container at a second point via a correction filling chute.

  Thus, a combination weighing device having a small installation area and no trouble such as a bridge and having a good filling efficiency is provided.

Japanese Patent Laid-Open No. 02-002090

  As described above, when the object to be weighed constituting the target mass value is divided and put into one container at the first point and the second point, the object to be weighed at the first point, The discharge timing of the objects to be weighed at the second point is important. For example, if there is no regularity between the discharge timing of the object to be weighed at the first point and the discharge timing of the object to be weighed at the second point, the user can perform this discharge operation or its operation based on information other than the discharge timing. It must be determined whether the discharge timing is correct.

  In view of this, for example, when the target mass value is divided and measured in a plurality of times, the object to be weighed obtained by each combination weighing gives the target mass value to the upstream timing hopper and the downstream timing hopper group. Based on the results, it is possible to discharge the objects to be weighed from the downstream timing hopper group to the containers and packaging, so that the discharge timing of the objects to be measured has regularity, and the combination weighing machine It is an object of the present invention to provide a combination weighing machine that makes it easy to identify problems that occur in

  The combination weighing device according to the present disclosure is arranged downstream of the upstream timing hopper and the upstream timing hopper that temporarily retains the combination-weighed objects, and temporarily retains the weighing object discharged by the upstream timing hopper. A timing hopper, a downstream timing hopper group comprising at least one timing hopper, and an opening / closing operation of the downstream timing hopper group, and a downstream timing hopper disposed in a container package located near a discharge port of the downstream timing hopper group A control unit that discharges the objects to be weighed in the group, and the control unit is an Nth container packaging object to be weighed out of the containers and packaging, and is one of the preset target mass values. The object to be weighed that constitutes the mass value of the part stays in the downstream timing hopper group and is the object to be weighed for the Nth container packaging, and has a target quality If it is determined that the objects to be weighed which constitutes the rest of the mass value of the values remaining in the upstream timing hopper, and able to discharge the objects to be weighed staying in the downstream timing hopper groups to the N-th packaging.

  The combination weighing device according to the present disclosure determines, for example, that the objects to be weighed obtained by the respective combination weighings are accumulated in the upstream timing hopper group and the downstream timing hopper group when the target mass value is combined and measured in a plurality of times. Based on the result, the object to be weighed can be discharged from the downstream timing hopper group to the container packaging. Thereby, regularity can be given to the discharge timing of the objects to be weighed, and it is possible to easily identify problems occurring in the combination weighing machine.

The figure for demonstrating the outline | summary of the whole combination weighing | measuring device 1 in this embodiment. The figure which shows typically the electric constitution of the combination weighing | measuring device 1 in this embodiment. The flowchart which shows the operation | movement which discharges | emits the to-be-measured object which stays in the 1st timing hopper 11 with respect to the container packaging from the 1st timing hopper 11. The flowchart which shows the operation | movement which discharges | emits the to-be-measured object which stays in the 2nd timing hopper 12 with respect to the container packaging from the 2nd timing hopper 12. The figure for demonstrating the case where the to-be-measured object which concerns on a combination continuously is supplied to the upstream timing hopper 10 without a combination defect

  Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed descriptions of already well-known matters and repeated descriptions for substantially the same configuration may be omitted. This is to avoid the following description from becoming unnecessarily redundant and to facilitate understanding by those skilled in the art.

  The inventor provides the accompanying drawings and the following description in order for those skilled in the art to fully understand the present disclosure, and is not intended to limit the subject matter described in the claims. Absent.

(Embodiment 1)
Hereinafter, Embodiment 1 will be described with reference to FIGS.

  FIG. 1 is a diagram for explaining an overview of the entire combination weighing device 1 according to the present embodiment.

  As shown in FIG. 1, the combination weighing device 1 in the present embodiment receives an object to be weighed (denoted as M in FIG. 1) from the supply device 100. The combination weighing device 1 performs combination weighing on the received objects to be weighed.

  FIG. 2 is a diagram schematically showing the electrical configuration of the combination weighing device 1 in the present embodiment.

  Here, the object to be weighed may be, for example, food such as a snack, or may be a metal part such as a nut or a bolt. That is, as long as a predetermined amount is supplied to a plurality of hoppers and the supplied mass is combined to measure a desired mass value, any one may be used.

  The supply device 100 is a member that transports an object to be weighed supplied by a user and drops the object to be dispersed with respect to the dispersion unit 2. An object to be weighed is put into the combination weighing device 1 by the action of the feeding device 100. The supply device 100 in the present embodiment may be a device that conveys an object to be weighed by vibration, or a device that conveys an object by a belt conveyor. In short, any member may be used as long as it has a function of transporting and feeding the object to be weighed supplied by the user to the dispersing unit 2.

  Hereinafter, a specific configuration of the combination weighing device 1 in the present embodiment will be described.

  The combination weighing device 1 in this embodiment includes a dispersion unit 2, a supply trough 3, a pool hopper 4, a gate 5, a weighing hopper 6, a mass detector 7, a gate 8, a collective chute 9, an upstream timing hopper 10, and a first timing hopper. 11 and a second timing hopper 12.

  Here, there are a plurality of pool hoppers 4, gates 5, weighing hoppers 6, mass detectors 7, and gates 8, respectively. In order to distinguish each, it describes with the pool hopper 4_i. The same applies to the gate 5, the weighing hopper 6, the mass detector 7 and the gate 8. Further, i is a positive integer. For example, the pool hopper 4_1 indicates the first pool hopper 4 among the plurality of pool hoppers 4.

  The dispersion unit 2 is a member that disperses the objects to be weighed falling from the supply device 100 toward the supply trough 3. The dispersion unit 2 in the present embodiment conveys the object to be weighed toward the supply trough 3 by continuously vibrating at a predetermined frequency. In addition, the system which concerns on conveyance is not limited to a vibration, What kind of thing may be used if it has a function which conveys a to-be-measured object toward the supply trough 3. FIG.

  The supply trough 3_i is a member that supplies the objects to be weighed supplied from the dispersion unit 2 to the pool hopper 4_i provided corresponding to the downstream of each of the supply troughs 3_i.

  The pool hopper 4_i is a member that temporarily retains the objects to be weighed supplied from the supply trough 3_i. The pool hopper 4_i has a gate 5_i. When the gate 5_i is opened and closed, the objects to be weighed in the pool hopper 4_i are discharged to the weighing hopper 6_i provided downstream of the gate 5_i.

  Here, each of the gates 5_i is connected to the stepping motor 13_i via each link mechanism. Further, the stepping motor 13_i is connected to the control unit 200. The control unit 200 outputs a predetermined control signal to each of the stepping motors 13_i. When the stepping motor 13_i receives the control signal output from the control unit 200, the stepping motor 13_i is driven to rotate based on the control signal. By rotationally driving in this way, the link mechanism operates and the gate 5_i opens and closes. With this configuration, the control unit 200 controls the opening / closing operation of the gate 5_i.

  The weighing hopper 6_i is a member that temporarily retains the objects to be weighed discharged from the pool hopper 4_i. The weighing hopper 6_i is connected to the mass detector 7_i. When an object to be weighed is put into the weighing hopper 6_i, distortion occurs in the mass detector 7_i. Then, the mass detector 7_i can detect the mass value of the object to be weighed put into the weighing hopper 6_i based on the signal based on the distortion.

  Here, the mass detector 7_i in the above is specifically constituted by a load cell. However, the mass detector 7_i is not limited to a load cell, and may be a member that uses a mass detection method using a tuning fork type sensor. In short, any configuration may be used as long as it can detect the mass of the object to be weighed put into the weighing hopper 6_i.

  The gate 8_i is a member that is provided in each of the corresponding weighing hoppers 6_i, and temporarily holds an object to be weighed in the weighing hopper 6_i in the weighing hopper 6_i. When the gate 8_i is opened and closed, the objects to be weighed in the weighing hopper 6_i are discharged to the booster hopper 9_i arranged downstream of the gate 8_i.

  Here, each gate 8_i is connected to the stepping motor 14_i via the respective link mechanism. Further, the stepping motor 14 — i is connected to the control unit 200. The control unit 200 outputs a predetermined control signal to each of the stepping motors 14_i. When the stepping motor 14 — i receives the control signal output from the control unit 200, the motor shaft is rotationally driven based on the control signal. By rotating and driving in this way, the link mechanism operates and the gate 8_i opens and closes. With this configuration, the control unit 200 controls the opening / closing operation of the gate 8_i.

  The collecting chute 9 is a member that collects the objects to be discharged from the plurality of weighing hoppers 6 </ b> _i and drops them toward the upstream timing hopper 10. The objects to be weighed discharged to the collective chute 9 fall to the upstream timing hopper 10 along the side walls of the collective chute 9 due to their own weight. Here, the objects to be weighed discharged from the plurality of weighing hoppers 6 — i are objects to be weighed that give a target mass value as a result of the combination.

  The upstream timing hopper 10 is a member for temporarily retaining the objects to be weighed supplied from the collecting chute 9. In addition, the collective chute 9 discharges the object to be weighed temporarily to the downstream timing hopper group disposed downstream at a predetermined timing under the control of the control unit 200. Here, the downstream timing hopper group includes a first timing hopper 11 and a second timing hopper 12.

  Specifically, the upstream timing hopper 10 is connected to the stepping motor 15 via a link mechanism. Further, the stepping motor 15 is connected to the control unit 200. The control unit 200 outputs a predetermined control signal to the stepping motor 15. When the stepping motor 15 receives the control signal output from the control unit 200, the motor shaft is rotationally driven based on the control signal. By rotating and driving in this way, the link mechanism operates, and the gate of the upstream timing hopper 10 opens and closes. At this time, based on the control signal output from the control unit 200, the upstream timing hopper 10 opens the gate so as to discharge the staying weighing object to the first timing hopper 11, and the staying weighing object. The gate is opened and closed while selectively switching between the second operation of opening the gate so as to discharge the object to the second timing hopper 12. For example, when the combination weighing device 15 rotates forward about the motor shaft based on the control signal from the control unit 200, the gate of the upstream timing hopper 10 opens and closes in the first operation. On the other hand, when the combination weighing device 15 rotates reversely about the motor shaft based on the control signal from the control unit 200, the gate of the upstream timing hopper 10 is opened and closed by the second operation.

  The first timing hopper 11 forming the downstream timing hopper group is a member disposed downstream of the upstream timing hopper 10. Further, the first timing hopper 11 is a member for temporarily retaining the object to be weighed supplied from the upstream timing hopper 10. Moreover, the 1st timing hopper 11 discharges | relates the to-be-measured object temporarily retained by the control of the control part 200 to the container packaging located in the discharge port vicinity at a predetermined timing.

  Here, the said container packaging is formed by the packaging machine arrange | positioned further downstream of the downstream timing hopper group. This container packaging may be anything as long as it has a function of packaging an object to be weighed, and may be an irregular plastic bag or a regular plastic container.

  The first timing hopper 11 is connected to the stepping motor 16 via a link mechanism. Further, the stepping motor 16 is connected to the control unit 200. The control unit 200 outputs a predetermined control signal to the stepping motor 16. When the stepping motor 16 receives the control signal output from the control unit 200, the motor shaft is rotationally driven based on the control signal. By rotating and driving in this way, the link mechanism operates, and the gate of the first timing hopper 11 opens and closes.

  The second timing hopper 12 forming the downstream timing hopper group is a member disposed downstream of the upstream timing hopper 10. Further, the second timing hopper 12 is a member for temporarily retaining the object to be weighed supplied from the upstream timing hopper 10. Further, the second timing hopper 12 discharges the object to be weighed temporarily to a container package located near the discharge port at a predetermined timing under the control of the control unit 200.

  The second timing hopper 12 is connected to the stepping motor 17 via a link mechanism. Further, the stepping motor 17 is connected to the control unit 200. The control unit 200 outputs a predetermined control signal to the stepping motor 17. When the stepping motor 15 receives the control signal output from the control unit 200, the motor shaft is rotationally driven based on the control signal. By rotating and driving in this manner, the link mechanism operates, and the gate of the second timing hopper 12 opens and closes.

  The control unit 200 is a member that controls each member constituting the combination weighing device 1.

  Specifically, the control unit 200 performs combination weighing according to a control program stored in a memory (not shown) based on information input from a user via an input unit (not shown) such as a touch panel.

  For example, information input from the user is a target mass value to be measured by combination weighing.

  In the case of the present embodiment, the control unit 200 performs combination weighing on the objects to be weighed discharged to the Nth container packaging in two steps. That is, when the target mass value input by the user is 1000 g, the control unit 200 measures 400 g in the first combination weighing and 600 g in the second combination weighing. The control unit 200 weighs an object to be weighed twice to give a target mass value by combining and weighing two times for one container and packaging.

  In addition, the control part 200 uses the mass value of the to-be-measured object retained in the weighing hopper 6_i, when carrying out combination weighing.

  Note that the mass value related to the first combination weighing and the mass value related to the second combination weighing may be input.

  Moreover, the control part 200 can discharge | emit the to-be-measured item which stays in the 1st timing hopper 11 with respect to a downstream container packaging based on the staying state of the to-be-measured item in the 1st timing hopper 11 and the upstream timing hopper 10 Determine whether. Specifically, when an object to be measured that gives a target mass value is divided and stays in each of the first timing hopper 11 and the upstream timing hopper 10, the control unit 200 is to be weighed in the first timing hopper 11. The thing can be discharged. For example, when the target mass value is combined and weighed in two steps, the control unit 200 is an object to be weighed obtained by the first combination weighing, and the object to be weighed that is a part of the target mass value is the first timing. When an object to be weighed that stays in the hopper 11 and is weighed for the second time and is the remainder of the target mass value stays in the upstream timing hopper 10, the object is removed from the first timing hopper 11. Allow the weighed material to be discharged. In short, in the case of a weighing method in which a target mass value is divided into a plurality of mass values, combined and weighed a plurality of times, and a plurality of objects to be weighed after the combination weighing are combined to obtain a target mass value, the control unit 200 On the condition that all the objects to be weighed stay in the timing hopper 10 and the downstream timing hopper group, it is determined that the objects to be weighed can be discharged from the first timing hopper 11 to the container package.

  For example, when the control unit 200 determines that an object to be weighed that constitutes 400 g out of 1000 g that is the target mass value stays in the first timing hopper 11 and the remaining 600 g stays in the upstream timing hopper 10. The object to be weighed can be discharged from the first timing hopper 11 to the container packaging located near the discharge port of the first timing hopper 11.

  By configuring as described above, the control unit 200 performs the combination weighing of the objects to be weighed to give the target mass value in a plurality of times, and combines them into the upstream timing hopper 10 and the first timing hopper 11 in a plurality of times. In the state where each weighed object to be weighed stays, the object to be weighed that stays in the first timing hopper 11 can be discharged into the container package. For this reason, after the objects to be weighed staying in the first timing hopper 11 are discharged to the container and packaging, the objects to be weighed in the upstream timing hopper 10 are discharged to the same container and packaging at least due to the occurrence of a combination failure, etc. There is no delay in the discharge cycle. That is, since all the objects to be weighed that give the target mass value have already accumulated in the upstream timing hopper 10 and the downstream timing hopper group, the control unit 200 performs the combination weighing operation, the upstream timing hopper 10 and the downstream timing hopper. The discharge operation of the hopper group can be separated and operated. In short, the weighing operation and the discharging operation can be controlled independently.

  Therefore, when the discharge operation of the objects to be weighed in the upstream timing hopper 10 and the first timing hopper 11 is normal, the objects to be weighed in the first timing hopper 11 are discharged to the container packaging and then the upstream timing hopper. It can be carried out in a constant cycle until the object to be weighed in 10 is discharged into the container and packaging. Thereby, the user can confirm whether or not the discharging operation after the upstream timing hopper 10 or the processing operation of the packaging machine is normal only by confirming whether or not the certain cycle is broken.

  Hereinafter, the discharging operation of the upstream timing hopper 10, the first timing hopper 11, and the second timing hopper 12 in the control unit 200 will be described in detail with reference to the drawings.

  FIG. 3 is a flowchart showing an operation of discharging the object to be weighed from the first timing hopper 11 to the container packaging from the first timing hopper 11.

  Hereinafter, for convenience of explanation, an operation in which the entire object to be weighed discharged to the Nth container packaging is weighed by two combination weighings will be described.

  First, the control unit 200 measures a part of the objects to be weighed out of the entire objects to be discharged into the Nth container packaging by the first combination weighing. A part of the weighing object obtained by weighing is discharged to the first timing hopper 11. Further, after weighing the part of the objects to be weighed, the control unit 200 weighs the remaining objects to be weighed by combination weighing. The remaining objects to be weighed obtained by weighing are discharged to the first timing hopper 11. At this time, the control unit 200 discharges a part of the objects to be weighed in the first timing hopper 11 to the second timing hopper 12 and then discharges the remaining objects to be measured to the first timing hopper 11.

  That is, the control unit 200 performs the combination weighing operation until a part of the objects to be weighed to be discharged into the Nth container and packaging and the remaining objects to be weighed are weighed twice. Continue (S301).

  In the above, the entire object to be weighed discharged to the Nth container packaging is a target mass value input by the user. This target mass value is set to 1000 g, for example. Some objects to be weighed are set to 600 g. In this case, the remaining objects to be weighed are set to 400 g.

  Next, the control unit 200 retains some of the objects to be weighed out of the entire objects to be discharged to the Nth container and wrapping with respect to the first timing hopper 11 and the first timing hopper 11 with respect to the upstream timing hopper 10. It is determined whether or not the remaining objects to be weighed out of the entire objects to be discharged to the Nth container and packaging are retained (S302). If the condition is satisfied as a result of the determination, the control unit 200 proceeds to S303. On the other hand, as a result of the determination, if the above condition is not satisfied, the control unit 200 proceeds to S301 again and continues the combination weighing.

  For example, when the target mass value is 1000 g, 600 g of the weighing object stays in the first timing hopper 11 and 400 g of the weighing object stays in the upstream timing hopper 10. Makes it possible to discharge 600 g of an object to be weighed from the first timing hopper 11 into a container and packaging.

  Here, the control unit 200 determines whether or not the object to be weighed stays in the upstream timing hopper 10 and the first timing hopper 11 based on the result of the combination weighing. For example, when a command signal for combination weighing is output, the control unit 200 can acquire a signal (hereinafter referred to as a confirmation signal) regarding whether or not the combination weighing based on the command signal is successful.

  For example, when a command signal (hereinafter referred to as a first command signal) for combination weighing of a part of the objects to be weighed among the target mass values is output and a confirmation signal corresponding to the first command signal is received, the control unit 200, it can be determined that a part of the target mass value stays in the upstream timing hopper 10. Further, when a command signal for combination weighing of the remaining objects to be weighed among the target mass values (hereinafter referred to as a second command signal) is output and a confirmation signal corresponding to this command signal is received, the control unit 200 It can be determined that a part of the target mass value stays in the first timing hopper 11 and the remaining part of the target mass value stays in the upstream timing hopper 10.

  Note that the control unit 200 may use any method as long as it can determine whether or not the object to be weighed stays in the upstream timing hopper 10 and the first timing hopper 11. For example, the upstream timing hopper 10 and the first timing hopper 11 may be provided with a member capable of detecting mass, and may be determined based on the result.

  Next, the control unit 200 determines whether or not a discharge signal is received from a packaging machine disposed downstream of the combination weighing device 1 (S303). When the discharge signal is received, the control unit 200 proceeds to S304. On the other hand, when the discharge signal is not received, the control unit 200 continues the operation of receiving the discharge signal as it is.

  When receiving a discharge signal from the packaging machine, the control unit 200 discharges the object to be weighed in the first timing hopper 11 to the Nth container packaging located near the discharge port of the first timing hopper 11. Then, the operation is terminated (S304).

  By operating as described above, the control unit 200 is an Nth container-wrapping object to be weighed, and the objects to be weighed that constitute part of the preset target mass value are An object to be weighed in the first timing hopper 11 and the Nth container packaging, and the object to be weighed that constitutes the remaining mass value among the target mass values stays in the upstream timing hopper 10. When it is determined that the object to be weighed in the first timing hopper 11 can be discharged to the Nth container packaging.

  By operating as described above, when the object to be weighed is discharged from the first timing hopper 11, the object to be weighed that forms a combination with the object to be weighed and the target mass value stays in the upstream timing hopper 10. ing. For this reason, the control unit 200 executes in a constant cycle until the object to be weighed staying in the upstream timing hopper 10 is discharged from the second timing hopper 12 after the object is discharged from the first timing hopper 11. it can. In other words, when the objects to be weighed constituting the target mass value are not divided and staying in the upstream timing hopper 10 and the first timing hopper 11, when the objects to be weighed are discharged from the first timing hopper 11, the upstream timing hopper 10 In addition, a delay period of several cycles may occur due to a combination failure or the like until the objects to be weighed that are combined for the target mass value stay. Therefore, as described above, a constant cycle is defined from the discharge of the object to be weighed from the first timing hopper 11 until the object to be weighed in the upstream timing hopper 10 is discharged from the second timing hopper 12. I can't.

  By configuring as described above, the user can confirm normality or abnormality of the ejection operation only by confirming the ejection timing of the first timing hopper 11 and the second timing hopper 12.

  FIG. 4 is a flowchart showing an operation of discharging the object to be weighed in the second timing hopper 12 from the second timing hopper 12 to the container packaging.

  The control unit 200 performs the discharge operation of the objects to be weighed in the second timing hopper 12 while waiting for a discharge signal from the packaging machine arranged downstream of the combination weighing device 1 (S401). In short, when receiving a signal for discharging an object to be weighed from the second timing hopper 12 from the packaging machine (hereinafter referred to as a second discharge signal), the control unit 200 proceeds to S402. In addition, the control part 200 waits in the state as it is until it receives the 2nd discharge signal from a packaging machine.

  Next, the control unit 200 determines whether or not to receive an error signal from the packaging machine (S402). When the error signal is received from the packaging machine, the control unit 200 moves to S405. On the other hand, when the error signal is not received from the packaging machine, the control unit 200 proceeds to S403.

  Here, the error signal is a signal transmitted from the packaging machine to the combination weighing device 1 when any abnormal operation such as abnormality of container packaging formation is observed on the packaging machine side.

  When the error signal is not received, the control unit 200 determines whether or not the object to be weighed stays in the second timing hopper 12 (S403). When the object to be weighed stays in the second timing hopper 12, the control unit 200 proceeds to S404. On the other hand, when the object to be weighed does not stay in the second timing hopper 12, the control unit 200 proceeds to S406.

  When it is determined that the object to be weighed stays in the second timing hopper 12, the control unit 200 places the object to be weighed in the second timing hopper 12 near the discharge port of the second timing hopper 12. It discharges to the container and packaging located, and operation | movement is complete | finished (S404).

  On the other hand, when an error signal is received from the packaging machine in S402, the control unit 200 treats the object to be weighed in the second timing hopper 12 as a defective product (S405). That is, the control unit 200 performs error processing on this error signal. For example, when a chute that discharges an object to be weighed in the second timing hopper 12 from the system is connected to the second timing hopper 12, the control unit 200 moves the gate of the second timing hopper 12 to the chute. The object to be weighed that opens in the direction and stays in the second timing hopper 12 is discharged out of the system. Further, the control unit 200 discharges an object to be weighed in the second timing hopper 12 to a container package located near the discharge port of the second timing hopper 12, and transmits an error signal to the packaging machine. . When the operation is completed in this way, the control unit 200 ends as it is.

  Furthermore, when it is determined in S403 that the object to be weighed does not stay in the second timing hopper 12, the control unit 200 outputs a signal indicating that the object to be weighed cannot be discharged to the packaging machine, The operation is terminated as it is (S406).

  By operating as described above, the control unit 200 causes the packaging to be performed after discharging the objects to be weighed from the first timing hopper 11 to the container packaging and before discharging the objects to be weighed in the second timing hopper 12. Even when an error signal is received from the machine, error processing can be performed by regarding only the objects to be weighed in the second timing hopper 12 as defective products. As a result, the designer can easily implement error processing and its verification.

  For example, when the object to be weighed stays only in the first timing hopper 11, when the object to be weighed is discharged from the first timing hopper 11 to the container package, the control unit 200 determines the target weight value and the discharged object to be weighed. The member to be weighed in the combination is located on which member but cannot be grasped. Therefore, the control unit 200 confirms that there are objects to be weighed in combination with the discharged objects to be measured in order from the downstream to the upstream with respect to the members arranged upstream from the first timing hopper 11. We have to go. In the case of such a design, it is difficult for the designer to implement and verify the design.

  In the above-described embodiment, the configuration in which the error signal is transmitted from the packaging machine to the combination weighing device 1 only for the objects to be weighed staying in the second timing hopper 12 has been described. However, the packaging machine may be configured to transmit an error signal regarding the object to be weighed staying in the first timing hopper 11.

  In this case, for example, when a chute that discharges an object to be weighed in the first timing hopper 11 to the outside of the system is connected to the first timing hopper 11, the control unit 200 is connected to the gate in the first timing hopper 11. Is opened in the chute direction, and the object to be weighed staying in the first timing hopper 11 is discharged out of the system. Further, the control unit 200 discharges the object to be weighed in the first timing hopper 11 to the container packaging located near the discharge port of the first timing hopper 11, and transmits an error signal to the packaging machine. .

  Moreover, in the said embodiment, after confirming the 2nd discharge signal (S401), the operation | movement (S402) which confirms an error signal was demonstrated. However, as long as the processing flow is to be confirmed, the confirmation order may be any.

(Description of specific operation)
Hereinafter, specific discharge operations in the upstream timing hopper 10, the first timing hopper 11, and the second timing hopper 12 in the present embodiment will be described with reference to FIG.

  FIG. 5 is a diagram for explaining a case where the objects to be weighed continuously associated with the combination are supplied to the upstream timing hopper 10 without a combination failure.

  Hereinafter, for convenience of explanation, it is assumed that the target mass value is divided and measured in two. In addition, each of the objects to be weighed according to the combination weighing is discharged into one container and package under the control of the control unit 200.

  The underlined numerical value in FIG. 5 indicates the number of cycles of the discharging operation. That is, the underlined “1” indicates the first cycle of all discharge operations.

  FIG. 5 is a diagram schematically showing the upstream timing hopper 10, the first timing hopper 11, the second timing hopper 12, and the container packaging. That is, the supply trough 3 shows a configuration in which the first timing hopper 11 and the second timing hopper 12 are arranged downstream of the upstream timing hopper 10. FIG. 5 shows a configuration in which the objects to be weighed are discharged from the first timing hopper 11 and the second timing hopper 12 to the container and packaging.

  Further, “A-B” such as 1-1 in FIG. 5 indicates the objects weighed in the B-th time among all the objects to be discharged to the container packaging Ath. For example, when the target mass value is combined and weighed twice, B is 1 or 2. In other words, 3-1 means an object to be weighed for the first time out of all objects to be weighed in the third place.

  And the numerical value described in the container packaging in FIG. 5 means the to-be-measured object. For example, when 2-1 is described in the container and packaging, the description is a state in which the container and packaging stores the mass value that has been combined and weighed the first time among all the objects to be weighed into the container and packaging second. Indicates. In addition, the description “2” simply indicates a state in which all objects to be weighed secondly into the containers and packages are easily stored.

  In the first cycle, the control unit 200 is an object to be weighed that is supplied from the collecting chute 9 to the upstream timing hopper 10 and is weighed for the first time for the first container packaging. Is retained in the upstream timing hopper 10.

  Next, the control unit 200 discharges the objects to be weighed in the upstream timing hopper 10 to the first timing hopper 11 in the second cycle. Further, the control unit 200 is an object to be weighed that is supplied from the collecting chute 9 to the upstream timing hopper 10 and that is weighed for the first time for the first container wrapping. 10 to stay.

  At this time, the control unit 200 can determine that all the objects to be weighed to be discharged into the first container package are staying in the upstream timing hopper 10 and the first timing hopper 11. Therefore, the control unit 200 waits for the first discharge signal from the packaging machine in the third cycle and makes the above determination, and the weighing object staying in the first timing hopper 11 is transferred from the first timing hopper 11 to the first one. Drain for containers and packaging.

  In conjunction with the discharge timing, the object to be weighed that stays in the upstream timing hopper 10 is discharged to the second timing hopper 12. Further, the control unit 200 is an object to be weighed that is supplied from the collecting chute 9 to the upstream timing hopper 10 and that weighs the weighed object that has been combined and weighed for the first time for the second container packaging. 10 to stay.

  Next, as a fourth cycle, the control unit 200 discharges the objects to be weighed in the upstream timing hopper 10 to the first timing hopper 11. Further, the control unit 200 is an object to be weighed that is supplied from the collective chute 9 to the upstream timing hopper 10, and that weighs the object to be weighed for the second time for the second container wrapping in the upstream timing hopper. 10 to stay. Further, at this timing, the packaging machine moves the first container package located near the discharge port of the first timing hopper 11 to the vicinity of the discharge port of the second timing hopper 12. Further, the packaging machine moves the second container package to the vicinity of the discharge port of the first timing hopper 11.

  And as a 5th cycle, the control part 200 waits for the 2nd discharge signal from a packaging machine, and discharges the to-be-measured object which stays in the 2nd timing hopper 12 to a 1st container packaging. In conjunction with the discharge timing, the object to be weighed staying in the first timing hopper 11 is discharged to the second container package. When the fifth cycle is completed, all the desired objects to be weighed are stored in the first container package. Further, the control unit 200 is an object to be weighed that is supplied from the collecting chute 9 to the upstream timing hopper 10 and that weighs an object to be weighed for the first time for the third container packaging in the upstream timing hopper. 10 to stay.

  Next, as a sixth cycle, the control unit 200 discharges the objects to be weighed in the upstream timing hopper 10 to the first timing hopper 11. Further, the control unit 200 is an object to be weighed that is supplied from the collecting chute 9 to the upstream timing hopper 10 and that is weighed for the second time for the third container wrapping. 10 to stay. Further, at this timing, the packaging machine moves the second container packaging located near the discharge port of the first timing hopper 11 to the vicinity of the discharge port of the second timing hopper 12. Further, the packaging machine moves the third container package to the vicinity of the discharge port of the first timing hopper 11.

  And as a 7th cycle, the control part 200 waits for the 2nd discharge signal from a packaging machine, and discharges the to-be-measured object which stays in the 2nd timing hopper 12 to a 2nd container packaging. In conjunction with the discharge timing, the object to be weighed in the first timing hopper 11 is discharged to the third container package. When the seventh cycle is completed, the second container package stores all desired objects to be weighed. Further, the control unit 200 is an object to be weighed that is supplied from the collecting chute 9 to the upstream timing hopper 10 and that weighs an object to be weighed for the first time for the fourth container packaging in the upstream timing hopper. 10 to stay.

  By repeating the above operations in order as shown in FIG. 5, the combination weighing device 1 can suitably discharge the objects to be weighed with respect to the container and packaging.

(Summary)
The combination weighing device 1 according to the present embodiment includes an upstream timing hopper 10 that temporarily retains the combination-weighed objects to be weighed, and an object to be weighed that is disposed downstream of the upstream timing hopper 10 and discharged by the upstream timing hopper 10. A timing hopper that is temporarily retained, and controls the opening / closing operation of a downstream timing hopper group including at least one timing hopper (for example, the first timing hopper 11 and the second timing hopper 12) and the downstream timing hopper group. And a control unit 200 that discharges an object to be weighed in the downstream timing hopper group to a container package positioned near the discharge port of the downstream timing hopper group.

  Here, the control unit 200 is the Nth container packaging object to be weighed out of the containers and packaging, and the objects to be weighed that constitute part of the preset target mass value are downstream timings. It is determined that an object to be weighed that stays in the hopper group and is the Nth container packaging object and that constitutes the remaining mass value of the target mass value stays in the upstream timing hopper 10. In this case, the objects to be weighed in the downstream timing hopper group can be discharged to the Nth container packaging.

  As a result, when the object to be weighed is discharged from the first timing hopper 11, the object to be weighed that forms a combination with respect to the object to be discharged and the target mass value stays in the upstream timing hopper 10. For this reason, the control unit 200 executes in a constant cycle until the object to be weighed staying in the upstream timing hopper 10 is discharged from the second timing hopper 12 after the object is discharged from the first timing hopper 11. it can. Therefore, the user can confirm whether the discharging operation is normal or abnormal only by checking the discharging timing of the first timing hopper 11 and the second timing hopper 12.

  Further, preferably, when the control unit 200 receives a first discharge signal requesting discharge of an object to be weighed staying in the downstream timing hopper group from a packaging machine that transports containers and packages, the object to be weighed from the downstream timing hopper group. It is determined whether or not the discharge can be performed, and based on the result, the object to be weighed staying in the downstream timing hopper group is discharged to the Nth container package.

  Further, in the present embodiment, the downstream timing hopper group includes the first timing hopper 11 and the second timing hopper 12, and the control unit 200 is to be weighed in the first timing hopper 11 in the downstream timing hopper group. The object to be weighed is discharged from the Nth container wrapping and stays in the upstream timing hopper 10, and the object to be weighed together with the discharged object to be measured reaches the target mass value from the upstream timing hopper 10. Before discharging the object to be weighed which is discharged to the second timing hopper 12 and stays in the second timing hopper 12 from the second timing hopper 12 to the Nth container wrapping, the second hopper 12 When an error signal indicating that the object to be weighed in the timing hopper 12 is no longer needed is received, it is arranged upstream of the upstream timing hopper 10. Without changing the operation of the member to be to control only the objects to be weighed which have been retained in the second timing hopper 12 as a defective product.

  The control unit 200 receives an error signal from the packaging machine after discharging the objects to be weighed from the first timing hopper 11 into the container and before discharging the objects to be weighed in the second timing hopper 12. Even if it exists, an error process can be performed by regarding the to-be-measured item staying in the 2nd timing hopper 12 as a defective article. As a result, the designer can easily implement error processing and its verification.

(Other embodiments)
As described above, the present embodiment has been described as an example of the technique disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can also be applied to an embodiment in which changes, replacements, additions, omissions, and the like are appropriately performed.

  In the above description, the downstream timing hopper group includes the first timing hopper 11 and the second timing hopper 12. However, the downstream timing hopper group may be configured by a plurality of timing hoppers such as three or four.

  In this case, when all the objects to be weighed that give the target mass value stay in either the upstream timing hopper 10 or the downstream timing hopper group, the control unit 200 starts from the first timing hopper 11 to the first timing hopper 11. It is possible to discharge the objects to be weighed in the container and packaging.

  As described above, the embodiments have been described as examples of the technology in the present disclosure. For this purpose, the accompanying drawings and detailed description are provided.

  Accordingly, among the components described in the accompanying drawings and the detailed description, not only the components essential for solving the problem, but also the components not essential for solving the problem in order to illustrate the above technique. May also be included. Therefore, it should not be immediately recognized that these non-essential components are essential as those non-essential components are described in the accompanying drawings and detailed description.

  Moreover, since the above-mentioned embodiment is for demonstrating the technique in this indication, a various change, replacement, addition, abbreviation, etc. can be performed in a claim or its equivalent range.

  The present disclosure can be applied to a combination weighing device that performs combination weighing in a plurality of times on an object to be measured that gives a target mass value.

DESCRIPTION OF SYMBOLS 1 Combination measuring device 2 Dispersion | distribution part 3 Supply trough 4 Pool hopper 5 Gate 6 Weighing hopper 7 Mass detector 8 Gate 9 Collecting chute 10 Upstream timing hopper 11 1st timing hopper 12 2nd timing hopper 100 Supply apparatus 200 Control part

Claims (3)

An upstream timing hopper that temporarily retains the weighed objects weighed in combination;
A timing hopper disposed downstream of the upstream timing hopper and temporarily retaining the object to be weighed discharged by the upstream timing hopper, the downstream timing hopper group including at least one timing hopper;
A control unit that controls the opening and closing operation of the downstream timing hopper group, and discharges the objects to be weighed in the downstream timing hopper group to a container package located near the discharge port of the downstream timing hopper group,
The control unit is an Nth container packaging object to be weighed among the containers and packaging, and the object to be weighed that constitutes a part of the preset target mass value is the downstream timing hopper. It is determined that an object to be weighed for the Nth container and packaging, which constitutes the remaining mass value among the target mass values, is retained in the upstream timing hopper. If so, it is possible to discharge the object to be weighed in the downstream timing hopper group to the Nth container packaging,
Combination weighing device.   When the control unit receives a signal requesting discharge of the object to be weighed staying in the downstream timing hopper group from a packaging machine that conveys the container package, the control unit discharges the object to be weighed from the downstream timing hopper group. 2. The combination weighing device according to claim 1, wherein it is determined whether or not it is possible, and based on the result, the weighing object staying in the downstream timing hopper group is discharged into the Nth container package. The downstream timing hopper group includes a first timing hopper and a second timing hopper,
The controller is
Discharging the object to be weighed in the first timing hopper of the downstream timing hopper group to the Nth container packaging;
The object to be weighed that stays in the upstream timing hopper, the object to be weighed together with the discharged object to be measured becomes the target mass value, is discharged from the upstream timing hopper to the second timing hopper,
Before the object to be weighed in the second timing hopper is discharged from the second timing hopper to the Nth container packaging, the object to be weighed stays in the second timing hopper from a packaging machine that transports the container packaging. When receiving a signal indicating that the object to be weighed is no longer needed, the object to be weighed stayed in the second timing hopper without changing the operation of the member arranged upstream of the upstream timing hopper. The combination weighing device according to claim 1, wherein only a thing is controlled as a defective product.