JP6529167B2 - Combination weighing device - Google Patents

Description

  The present disclosure relates to a combination weighing machine that divides a target mass value into multiple times and feeds it into a container and a package.

  Patent Document 1 discloses a combination weighing device. The combination weighing device feeds the material to be weighed which gives a rough filling weight value equal to or less than the target weight value into the container at a first point via the rough loading chute, and further the target weight value and the rough filling weight value An object to be weighed which gives a corrected filling weight value which is a difference between the above and the above is configured to be introduced into the container at a second point through the compensating filling chute.

  As a result, a combination weighing device with a small installation area and without troubles such as a bridge and having a high filling efficiency is provided.

Japanese Examined Patent Publication No. 02-002090

  As described above, when the objects to be weighed that constitute the target mass value are divided and introduced into one container at the first point and the second point, the objects to be inserted at the first point; At the second point, the discharge timing of the input objects to be weighed is important. For example, if the discharge timing of the weighing object at the first point and the discharge timing of the weighing object at the second point are not regular, the user performs the discharging operation or the discharge operation based on the information other than the discharge timing. It must be determined whether the discharge timing is correct.

  Therefore, in the present disclosure, for example, when combining mass measurement with dividing the target mass value into plural times, the material to be weighed obtained by each combination weighing gives the target mass value to the upstream timing hopper and the downstream timing hopper group. Judging that each has stagnated, based on the result, by making it possible to discharge the objects to be weighed from the downstream timing hopper group to the container and packaging, the discharge timing of the objects to be weighed has regularity, and the combination weighing machine It is an object of the present invention to provide a combination weighing machine which makes it easy to identify problems occurring in the

  The combination weighing device in the present disclosure is disposed downstream of the upstream timing hopper for temporarily retaining the combined weighed objects, and for temporarily retaining the objects discharged by the upstream timing hopper. The timing hopper is a downstream timing hopper group including at least one or more timing hoppers, and an opening / closing operation of the downstream timing hopper group is controlled, and the container packaging located near the discharge port of the downstream timing hopper group is downstream timing hopper. A control unit for discharging the objects to be weighed staying in the group, and the control unit is an N-th object to be weighed for container packaging among the container and packaging, and one of the target mass values set in advance An object to be weighed which constitutes the mass value of the part is retained in the downstream timing hopper group, and the object to be weighed for the Nth container packaging is the 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 that the objects to be weighed obtained by the respective combination weighings are retained in the upstream timing hopper and the downstream timing hopper group, for example, when combining and weighing the target mass value in multiple times. Based on the result, it is possible to discharge the objects to be weighed from the downstream timing hoppers to the container package. Thereby, regularity can be given to the discharge timing of the to-be-measured item, and it is possible to easily identify the failure occurring in the combination weighing machine.

The figure for demonstrating the outline | summary of the whole combination weighing device 1 in this embodiment The figure which shows typically the electric constitution of the combination weighing device 1 in this embodiment. A flow chart showing an operation of discharging the objects to be weighed staying in the first timing hopper 11 from the first timing hopper 11 to the container and packaging. A flowchart showing an operation of discharging the objects to be weighed remaining in the second timing hopper 12 from the second timing hopper 12 to the container and packaging. Diagram for explaining the case where the objects to be weighed according to the combination are continuously supplied to the upstream timing hopper 10 without any combination failure.

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

  It is noted that the inventors provide the attached drawings and the following description so that those skilled in the art can fully understand the present disclosure, and intend to limit the claimed subject matter by these. Absent.

Embodiment 1
The first embodiment will be described below with reference to FIGS.

  FIG. 1 is a view for explaining the outline 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 by M in FIG. 1) from the supply device 100. Then, the combination weighing device 1 performs combination weighing on the received objects to be weighed.

  Moreover, FIG. 2 is a figure which shows typically the electric constitution of the combination weighing device 1 in this embodiment.

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

  The supply device 100 is a member that conveys the objects to be weighed supplied by the user and causes the objects to be dropped to the dispersing 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 one that conveys the object to be weighed by vibration, or may be one that conveys by a belt conveyor. In short, any member may be used as long as it is a member capable of conveying and loading 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 the present embodiment includes the dispersing unit 2, the supply trough 3, the pool hopper 4, the gate 5, the weighing hopper 6, the mass detector 7, the gate 8, the collecting chute 9, the upstream timing hopper 10, and the first timing hopper. 11 and the second timing hopper 12 are provided.

  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 pool hopper 4_i. The same applies to the gate 5, the weighing hopper 6, the mass detector 7 and the gate 8. Also, i is a positive integer. For example, the pool hopper 4_1 indicates that it is the first pool hopper 4 among the plurality of pool hoppers 4 present.

  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 dispersing unit 2 in the present embodiment conveys the object to be measured 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, As long as it has a function which conveys a to-be-measured item toward the supply trough 3, it may be anything.

  Supply trough 3_i is a member which supplies the to-be-measured item supplied from the dispersion | distribution part 2 to the pool hopper 4_i provided corresponding to the downstream of each supply trough 3_i.

  The pool hopper 4_i is a member for temporarily retaining the objects to be weighed supplied from the supply trough 3_i. The pool hoppers 4_i each have a gate 5_i. By the opening and closing operation of the gate 5 _i, the objects to be weighed staying 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 receiving the control signal output from the control unit 200, the stepping motor 13_i rotationally drives based on the control signal. By rotationally driving in this manner, 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 for temporarily retaining the objects to be weighed which the pool hopper 4_i discharges. The weighing hopper 6_i is connected to a mass detector 7_i. When an object to be weighed is loaded into the weighing hopper 6_i, distortion occurs in the mass detector 7_i. And mass detector 7_i can detect the mass value of the to-be-measured item thrown into weighing hopper 6_i based on the signal based on the distortion.

  Here, the mass detector 7_i in the above is specifically configured of a load cell. However, the mass detector 7_i is not limited to the load cell, and may be a member using a mass detection method using a tuning fork type sensor. In short, any configuration may be used as long as it is capable of detecting the mass of the objects to be weighed that have been introduced into the weighing hopper 6_i.

  The gates 8_i are members provided for the corresponding weighing hoppers 6_i, respectively, for temporarily retaining the objects to be weighed which have been introduced into the weighing hoppers 6_i in the weighing hoppers 6_i. By the opening and closing operation of the gate 8 _i, the objects to be weighed staying in the weighing hopper 6 _i are discharged to a booster hopper 9 _i disposed downstream of the gate 8 _i.

  Here, each of the gates 8 _i is connected to the stepping motor 14 _i via each link mechanism. Furthermore, 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 rotationally driving in this manner, the link mechanism operates and the gate 8_i opens and closes. With such a configuration, the control unit 200 controls the opening / closing operation of the gate 8_i.

  The collecting chute 9 is a member for collecting the objects to be weighed discharged from the plurality of weighing hoppers 6 _i and dropping them toward the upstream timing hopper 10. The objects to be weighed discharged to the collecting chute 9 fall on the upstream timing hopper 10 along the side wall of the collecting chute 9 by their own weight. Here, the objects to be weighed which are discharged from the plurality of weighing hoppers 6_i are the objects to be weighed which give the 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 collecting chute 9 discharges the temporarily retained items to be stored 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 has 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 a 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 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 performs a first operation of opening the gate so as to discharge the stagnating objects to be collected to the first timing hopper 11, and The gate is opened / 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 a 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 reversely rotates 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 second operation.

  The first timing hopper 11 forming the downstream timing hopper group is a member disposed downstream of the upstream timing hopper 10. Furthermore, the first timing hopper 11 is a member that temporarily holds the objects to be weighed supplied from the upstream timing hopper 10. Further, under the control of the control unit 200, the first timing hopper 11 discharges the objects to be weighed that are temporarily staying at a predetermined timing to a container and packaging located near the discharge port.

  Here, the container packaging is formed by a packaging machine disposed further downstream of the downstream timing hoppers. This container and packaging may be any type as long as it has the function of packaging the object to be weighed, may be an irregular plastic bag, or may be a fixed plastic container or the like.

  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 a 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 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 objects to be weighed supplied from the upstream timing hopper 10. Further, under the control of the control unit 200, the second timing hopper 12 discharges the articles temporarily retained at a predetermined timing to the container and packaging located near the discharge port.

  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 a control signal output from the control unit 200, the motor shaft is rotationally driven based on the control signal. By driving to rotate 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 of the combination weighing device 1.

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

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

  Further, in the case of the present embodiment, the control unit 200 divides and weighs the objects to be discharged into the Nth container and package in two times. That is, when the target mass value input by the user is 1000 g, the control unit 200 measures 400 g in the first combined weighing and measures 600 g in the second combined weighing. The control unit 200 performs combination weighing twice on one container package, and weighs the objects to be measured which give the target mass value.

  The control unit 200 uses the mass value of the objects to be weighed staying in the weighing hopper 6_i when performing combination weighing.

  The mass value according to the first combination measurement and the mass value according to the second combination measurement may be input.

  Further, based on the stagnation state of the objects to be weighed in the first timing hopper 11 and the upstream timing hopper 10, the control unit 200 can discharge the object to be weighed staying in the first timing hopper 11 to the downstream container packaging. To judge. Specifically, when the objects to be weighed which give the target mass value are divided and accumulated for each of the first timing hopper 11 and the upstream timing hopper 10, the controller 200 holds the objects to be weighed which are accumulated in the first timing hopper 11. Make things dischargeable. For example, in the case where the target mass value is divided into two and combined weighing is performed, the control unit 200 is a to-be-measured item obtained by combining weighing at the first time, and the to-be-measured item which is a part of the target mass value is the first timing When the objects to be weighed which are retained in the hopper 11 and obtained by combining and measuring for the second time and which are the remainder of the target mass value stay in the upstream timing hopper 10, the objects to be weighed are from the first timing hopper 11. Make it possible to discharge the weighing material. In short, in the case of a measurement method in which the target mass value is divided into a plurality of mass values and combined metering is performed a plurality of times, and a plurality of objects to be weighed obtained after the combination metering are combined to obtain a target mass value. It is determined that the objects to be weighed can be discharged from the first timing hopper 11 to the container package on condition that all the objects to be weighed are stagnant in the timing hopper 10 and the downstream timing hopper group.

  For example, when the control unit 200 determines that the objects to be weighed that make up 400 g out of 1000 g which is the target mass value stay in the first timing hopper 11 and the remaining 600 g stay in the upstream timing hopper 10 The objects to be weighed can be discharged from the first timing hopper 11 to the container and packaging located in the vicinity of the discharge port of the first timing hopper 11.

  By comprising as mentioned above, the control part 200 divides and weighs the to-be-measured item which gives a target mass value in multiple times in multiple times, divides into the upstream timing hopper 10 and the 1st timing hopper 11 in multiple times, and combines them. It is possible to discharge the objects to be weighed which are retained in the first timing hopper 11 to the container and the packaging in a state where each of the objects to be weighed has been retained. Therefore, after the objects to be weighed which are retained in the first timing hopper 11 are discharged to the container and the package, the objects to be weighed which are retained in the upstream timing hopper 10 are discharged to the same container and package at least due to the occurrence of combination failure. Delay of the discharge cycle does not occur. That is, since all the objects to be weighed which give the target mass value are already accumulated in the upstream timing hopper 10 and the downstream timing hopper group, the control unit 200 performs the weighing operation of the combined weighing, the upstream timing hopper 10 and the downstream timing. 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 staying in the upstream timing hopper 10 and the first timing hopper 11 is normal, after the objects to be weighed staying in the first timing hopper 11 are discharged to the container packaging, the upstream timing hopper is It can be carried out in a constant cycle until the objects to be weighed staying at 10 are discharged to the container package. As a result, the user can confirm whether the discharging operation after the upstream timing hopper 10 or the processing operation of the packaging machine is normal only by confirming whether the certain cycle has broken.

  Hereinafter, the discharge 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 flow chart showing an operation of discharging the objects to be weighed staying in the first timing hopper 11 from the first timing hopper 11 to the container packaging.

  Hereinafter, for convenience of explanation, the entire object to be discharged to the N-th container package will be described for the operation of being measured by two combination weighings.

  First, the control unit 200 measures a part of the objects to be weighed out of the entire objects to be discharged into the N-th container package by the first combination measurement. A part of objects to be weighed obtained by weighing is discharged to the first timing hopper 11. Furthermore, after measuring the part of the objects to be weighed, the control unit 200 measures the remaining objects to be weighed by combined weighing. The remaining to-be-measured items 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 staying in the first timing hopper 11 to the second timing hopper 12 and then discharges the remaining objects to the first timing hopper 11.

  In other words, the control unit 200 operates the combined weighing until it weighs a part of the weighed items constituting the entire weighed item to be discharged to the Nth container package and the remaining weighed items in two combined weighings. Continue (S301).

  In addition, the whole to-be-measured item discharged | emitted to the N-th container packaging in the above is the target mass value input by the user. This target mass value is set to, for example, 1000 g. Moreover, a part of objects to be weighed is set to 600 g. In this case, the remaining objects to be weighed are set to 400 g.

  Next, the control unit 200 is configured such that a part of the objects to be weighed out of the whole objects to be discharged to the Nth container package with respect to the first timing hopper 11 is retained, and the control unit 200 It is judged whether the remaining to-be-measured item has stagnated among the whole to-be-measured items discharged to the N-th container packaging (S302). If the above condition is satisfied as a result of the determination, the control unit 200 proceeds to S303. On the other hand, when the above condition is not satisfied as a result of the determination, the control unit 200 shifts to S301 again and continues the combined weighing.

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

  Here, the control unit 200 determines whether or not the objects to be weighed stay in the upstream timing hopper 10 and the first timing hopper 11 based on the result of the combined weighing. For example, when the control unit 200 outputs a command signal of combinational weighing, the control unit 200 can obtain a signal (hereinafter referred to as a confirmation signal) regarding whether or not the combinational weighing based on the command signal is successful.

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

  The control unit 200 may use any method as long as it can determine whether the objects to be weighed stay in the upstream timing hopper 10 and the first timing hopper 11. For example, a member capable of detecting a mass may be attached to the upstream timing hopper 10 and the first timing hopper 11, and the determination may be made based on the result.

  Next, the control unit 200 determines whether a discharge signal from the packaging machine disposed downstream of the combination weighing device 1 has been received (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 reception operation of the discharge signal as it is.

  When the discharge signal is received from the packaging machine, the control unit 200 discharges the objects to be weighed staying in the first timing hopper 11 to the Nth container packaging located near the discharge port of the first timing hopper 11. The operation is ended (S304).

  By operating as described above, the control unit 200 is the N-th object to be weighed for container packaging, and the object to be weighed that constitutes a part of mass values among the target mass values set in advance is The objects to be weighed that are staying in the first timing hopper 11 and that are the N-th objects to be weighed for container packaging and that constitute the remaining mass value among the target mass values are staying in the upstream timing hopper 10 When it is determined, the objects to be weighed staying in the first timing hopper 11 can be discharged to the Nth container package.

  By operating as described above, at the time of discharging the objects to be weighed from the first timing hopper 11, the objects to be weighed which form a combination with respect to the object to be discharged and the target mass value stay in the upstream timing hopper 10. ing. Therefore, after discharging the objects to be weighed from the first timing hopper 11, the control unit 200 executes in a predetermined cycle until the objects to be weighed staying in the upstream timing hopper 10 are discharged from the second timing hopper 12. it can. That is, when the objects to be weighed are discharged from the first timing hopper 11 in a state where the objects to be weighed constituting the target mass value are not divided and retained in the upstream timing hopper 10 and the first timing hopper 11, the upstream timing hopper 10 A delay period of several cycles may occur due to a combination failure or the like until the objects to be combined forming the combination for the target mass value stay. Therefore, as described above, a constant cycle is taken from discharging the objects to be weighed from the first timing hopper 11 to discharging the objects to be weighed staying in the upstream timing hopper 10 from the second timing hopper 12. I can not

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

  FIG. 4 is a flow chart showing an operation of discharging the objects to be weighed that stay 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 staying in the second timing hopper 12 after waiting for a discharge signal from the packaging machine disposed downstream of the combination weighing device 1 (S401). In short, when a signal (hereinafter, referred to as a second discharge signal) for discharging the objects to be weighed from the packaging machine to the second timing hopper 12 is received, the control unit 200 proceeds to S402. Note that the control unit 200 stands by as it is until the second discharge signal is received from the packaging machine.

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

  Here, the error signal is a signal that the packaging machine transmits to the combination weighing device 1 when an abnormal operation such as an abnormality in the formation of a container or the like is observed on the packaging machine side.

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

  Then, when it is determined that the objects to be weighed are staying in the second timing hopper 12, the control unit 200 causes the objects to be weighed staying in the second timing hopper 12 to be in the vicinity of the discharge port of the second timing hopper 12. It discharges to the container packaging located, and an 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 processes the objects to be weighed staying in the second timing hopper 12 as defective products (S405). That is, the control unit 200 performs error processing on this error signal. For example, when a chute that discharges the objects to be weighed remaining in the second timing hopper 12 is connected to the second timing hopper 12, the control unit 200 controls the gate of the second timing hopper 12 as the chute. The material to be weighed which is opened in the direction and retained in the second timing hopper 12 is discharged out of the system. Further, the control unit 200 discharges the objects to be weighed staying in the second timing hopper 12 into the container and packaging 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 as described above, the control unit 200 ends.

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

  By operating as described above, after the control unit 200 discharges the objects to be weighed from the first timing hopper 11 to the container and packaging, the control unit 200 performs packaging before discharging the objects to be weighed staying in the second timing hopper 12. Even when an error signal is received from the machine, an error can be processed by regarding only the objects to be weighed staying 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 objects to be weighed are discharged from the first timing hopper 11 to the container and the package when the objects to be weighed stay only in the first timing hopper 11, the control unit 200 outputs the objects to be weighed with respect to the target mass value. Although the to-be-measured item which makes a combination is located in which member, it can not grasp. Therefore, the control unit 200 confirms that there is an object to be weighed which is combined with the discharged object to be weighed in order from the downstream to the upstream with respect to the member disposed upstream of the first timing hopper 11 We have to go. Such a design makes it difficult for the designer to implement and verify.

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

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

  Further, in the above embodiment, after confirming the second discharge signal (S401), the operation (S402) of confirming the error signal has been described. However, as long as the process flow is to be confirmed, the confirmation order may be arbitrary.

(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 view for explaining the case where the objects to be weighed according to the combination are continuously supplied to the upstream timing hopper 10 without a combination failure.

  Hereinafter, for convenience of the following description, the target mass value is divided into two and combined and measured. Moreover, each to-be-measured item which concerns on the combination measurement shall be discharged | emitted by one container packaging by control of the control part 200. FIG.

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

  FIG. 5 is a view 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 has a configuration in which the first timing hopper 11 and the second timing hopper 12 are disposed downstream of the upstream timing hopper 10. Moreover, FIG. 5 has shown the structure which discharges a to-be-measured item from the 1st timing hopper 11 and the 2nd timing hopper 12 with respect to a container packaging.

  Furthermore, “A−B” such as 1-1 in FIG. 5 indicates the objects to be weighed that have been combined and measured at the B-th time among all the objects to be discharged to the container package at A-th. For example, when the target mass value is divided into two and combined weighing is performed, B is 1 or 2. That is, 3-1 means the to-be-measured item combined and measured in the 1st time among all the to-be-measured items which are thrown into a container packaging 3rdly.

  And the numerical value described in the container packaging in FIG. 5 means the input to-be-measured item. For example, when the container and packaging is described as 2-1, the description is a state in which the container and packaging store the mass value combined and measured at the first time among all objects to be weighed into the container and packaging secondly. Indicates Also, the description “2” simply indicates a state in which all the objects to be weighed which are put into the container and packaging can be easily stored.

  The control unit 200 is a to-be-measured item supplied from the collecting chute 9 to the upstream timing hopper 10 in the first cycle, and is a first-time combined weighed item for container packaging. Are retained in the upstream timing hopper 10.

  Next, in the second cycle, the control unit 200 discharges the objects to be weighed staying in the upstream timing hopper 10 to the first timing hopper 11. Furthermore, the control unit 200 is an object to be fed supplied from the collecting chute 9 to the upstream timing hopper 10, and is an upstream timing hopper for the second combined and weighed object for first container packaging. Remain in 10

  At this time, the control unit 200 can determine that all the objects to be discharged discharged to the first container / packing are stagnating in the upstream timing hopper 10 and the first timing hopper 11. Therefore, the control unit 200 makes the above determination after waiting for the first discharge signal from the packaging machine in the third cycle, and the objects to be weighed staying in the first timing hopper 11 are firstly received from the first timing hopper 11. Discharge to containers and packaging.

  Further, in association with the discharge timing, the objects to be weighed that are retained in the upstream timing hopper 10 are discharged to the second timing hopper 12. Furthermore, the control unit 200 is an object to be fed supplied from the collecting chute 9 to the upstream timing hopper 10, and is an upstream timing hopper for the first combined and weighed object for the second container packaging. Remain in 10

  Next, as the fourth cycle, the control unit 200 discharges the objects to be weighed that stay in the upstream timing hopper 10 to the first timing hopper 11. Further, the control unit 200 is an object to be fed supplied from the collecting chute 9 to the upstream timing hopper 10, and is an upstream timing hopper for the second combined weighed object for container packaging. Remain in 10 Further, at this timing, the packaging machine moves the first 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. Furthermore, the packaging machine moves the second container packaging to the vicinity of the discharge port of the first timing hopper 11.

  Then, as the fifth cycle, the control unit 200 discharges the objects to be weighed that stay in the second timing hopper 12 into the first container and packaging after waiting for the second discharge signal from the packaging machine. In conjunction with the discharge timing, the objects to be weighed that stay in the first timing hopper 11 are discharged to the second container and packaging. At the completion of the fifth cycle, the first container package stores all the desired objects to be weighed. Furthermore, the control unit 200 is an object to be fed supplied from the collecting chute 9 to the upstream timing hopper 10, and is an upstream timing hopper for the first combined and weighed object for the third container packaging. Remain in 10

  Next, as the sixth cycle, the control unit 200 discharges the objects to be weighed that stay in the upstream timing hopper 10 to the first timing hopper 11. Furthermore, the control unit 200 is an object to be fed supplied from the collecting chute 9 to the upstream timing hopper 10, and is an upstream timing hopper for the second combined and weighed object for the third container packaging. Remain in 10 Furthermore, 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. Furthermore, the packaging machine moves the third container packaging around the discharge port of the first timing hopper 11.

  Then, as the seventh cycle, the control unit 200 discharges the objects to be weighed that stay in the second timing hopper 12 into the second container and packaging after waiting for the second discharge signal from the packaging machine. In conjunction with the discharge timing, the objects to be weighed that stay in the first timing hopper 11 are discharged to the third container and packaging. At the completion of this seventh cycle, the second container package has all the desired items to be stored. Furthermore, the control unit 200 is an object to be supplied which is supplied from the collecting chute 9 to the upstream timing hopper 10, and is an upstream timing hopper for the first combined and weighed object for the fourth container packaging. Remain in 10

  By repeatedly repeating the above-described operation as shown in FIG. 5, the combination weighing device 1 can suitably discharge the objects to be weighed to the container and packaging.

(Summary)
The combination weighing device 1 in the present embodiment is disposed upstream of the upstream timing hopper 10 for temporarily retaining the combined weighed objects and downstream of the upstream timing hopper 10, and the objects to be discharged by the upstream timing hopper 10 are A timing hopper for temporarily retaining, which controls the opening / closing operation of the downstream timing hopper group including at least one or more timing hoppers (for example, the first timing hopper 11 and the second timing hopper 12) and the downstream timing hopper group And a control unit 200 for discharging the objects to be weighed staying in the downstream timing hopper group to the container packaging located near the outlet of the downstream timing hopper group.

  Here, the control unit 200 is the N-th to-be-measured item for container packaging of the container and packaging, and the to-be-measured item constituting the mass value of a part of the target mass values set in advance is downstream timing It is determined that the objects to be weighed that are staying in the hopper group and that constitute the Nth container packaging target and that constitute the remaining mass value among the target mass values are staying in the upstream timing hopper 10 In this case, it is possible to discharge the objects to be weighed staying in the downstream timing hopper group to the Nth container package.

  As a result, at the time of discharging the objects to be weighed from the first timing hopper 11, the objects to be weighed which form a combination with respect to the objects to be discharged and the target mass value stay in the upstream timing hopper 10. Therefore, after discharging the objects to be weighed from the first timing hopper 11, the control unit 200 executes in a predetermined cycle until the objects to be weighed staying in the upstream timing hopper 10 are discharged from the second timing hopper 12. it can. Therefore, the user can confirm normality or abnormality of the discharge operation only by confirming the discharge timing of the first timing hopper 11 and the second timing hopper 12.

  Preferably, when the control unit 200 receives a first discharge signal requesting discharge of the objects to be weighed staying in the downstream timing hopper group from the packaging machine which transports the container package, the control object 200 receives the objects to be weighed from the downstream timing hopper group. It is judged whether or not the discharge of the material can be discharged, and based on the result, the objects to be weighed staying in the downstream timing hopper group are discharged to the Nth container package.

  Further, in the present embodiment, the downstream timing hopper group has the first timing hopper 11 and the second timing hopper 12, and the control unit 200 is the subject to be weighed remaining in the first timing hopper 11 among the downstream timing hopper group. The object to be weighed which is discharged to the Nth container package and retained in the upstream timing hopper 10 and which becomes the target mass value together with the discharged object to be weighed is Second, from the packaging machine which transports the container packaging before discharging the objects to be weighed which are discharged to the timing hopper 12 and accumulated in the second timing hopper 12 from the second timing hopper 12 to the Nth container packaging When an error signal indicating that the objects to be weighed staying in the timing hopper 12 are no longer required is received, the upstream hopper is disposed upstream of the 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.

  In the case where the control unit 200 receives an error signal from the packaging machine before discharging the objects to be weighed staying in the second timing hopper 12 after discharging the objects to be weighed from the first timing hopper 11 to the container packaging. Even if there is an error, it is possible to treat an object to be weighed staying in the second timing hopper 12 as a defective product. 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 technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and is also applicable to embodiments in which changes, replacements, additions, omissions, and the like are appropriately made.

  In the above, the downstream timing hopper group has been described as being configured of 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, for example.

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

  As described above, the embodiment has been described as an example of the technology in the present disclosure. For that purpose, the attached drawings and the detailed description are provided.

  Therefore, among the components described in the attached drawings and the detailed description, not only components essential for solving the problem but also components not essential for solving the problem in order to exemplify the above-mentioned technology May also be included. Therefore, the fact that those non-essential components are described in the attached drawings and the detailed description should not immediately mean that those non-essential components are essential.

  In addition, since the above-described embodiment is for illustrating the technique in the present disclosure, various modifications, replacements, additions, omissions, and the like can be made within the scope of the claims or the equivalents thereof.

  The present disclosure is applicable to a combination weighing device that combines and weighs an item to be measured which provides a target mass value in a plurality of times.

Reference Signs List 1 combination weighing device 2 dispersing unit 3 supply trough 4 pool hopper 5 gate 6 weighing hopper 7 mass detector 8 gate 9 collecting chute 10 upstream timing hopper 11 first timing hopper 12 second timing hopper 100 supply device 200 control unit

Claims (3)

An upstream timing hopper for temporarily retaining the combined weighed objects;
A timing hopper, disposed downstream of the upstream timing hopper, for temporarily retaining the objects to be weighed which are discharged by the upstream timing hopper, the downstream timing hopper group comprising at least one or more timing hoppers;
A control unit that controls the opening / closing operation of the downstream timing hopper group, and discharges the objects to be weighed staying in the downstream timing hopper group on a container package located near the outlet of the downstream timing hopper group;
The control unit is an N-th object to be weighed for container packaging of the container and packaging, and the material to be weighed constituting a part of mass values among target mass values set in advance is the downstream timing hopper It is determined that the objects to be weighed that are staying in the group and that are the objects to be weighed for the Nth container and packaging and that constitute the remaining mass value among the target mass values are staying in the upstream timing hopper When it is carried out, the objects to be weighed which are retained in the downstream timing hopper group can be discharged to the Nth container package.
Combination weighing device.   When the control unit receives a signal requesting the discharge of the objects to be weighed staying in the downstream timing hopper group from the packaging machine that transports the container package, the control unit discharges the objects to be weighed from the downstream timing hopper group. The combination weighing device according to claim 1, wherein it is determined whether or not it is possible, and based on the result, the objects to be weighed staying in the downstream timing hopper group are discharged to the Nth container package. The downstream timing hopper group has a first timing hopper and a second timing hopper,
The control unit
The object to be weighed staying in the first timing hopper among the downstream timing hopper group is discharged to the Nth container packaging,
The to-be-measured item which is the to-be-measured item staying in the upstream timing hopper and which becomes the target mass value together with the discharged to-be-measured item is discharged from the upstream timing hopper to the second timing hopper.
Before discharging the objects to be weighed which are retained in the second timing hopper from the second timing hopper to the N-th container package, the material is retained in the second timing hopper from a packaging machine which transports the container package. When the signal indicating that the item to be weighed has become unnecessary is received, the item to be weighed that has been retained in the second timing hopper without changing the operation of the member disposed upstream of the upstream timing hopper The combination weighing device according to claim 1 or 2, wherein only the object is controlled as a defective product.