JP2007139422A - Powder feeder and seasoning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a powder feeder and a seasoning system capable of preferably performing feeding process regardless of the kind of powder stored in a reservoir and the state of the storage. <P>SOLUTION: The weight of seasoning is measured before feeding by a weighing part 49, then the seasoning feeding action is performed. For every feeding action, a screw member 47a is made to rotate by initial value of the rotation angle. Then the weight T12 of the seasoning after feeding is measured by the weighing part 49. The rotation angle to be used at the every feeding the seasoning as the set feeding amount of the screw member 47a is obtained based on the objective feeding weight for every time, the number of feeding times, the weight of the seasoning before feeding, the weight of the seasoning after feeding, and the initial value of the rotation angle. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a powder feeder that feeds powder to a subsequent process while being conveyed by a conveying unit, and a seasoning system using the powder feeder, and particularly relates to an improvement in calculation of a set feed amount corresponding to a powder conveyance amount.

  Conventionally, a packaged product such as snack confectionery measured by a weighing machine and a powder supplied as a seasoning from a powder feeder are mixed and subjected to a seasoning process, and the seasoned process is completed. There is known a system that can pack a bag with a packaging machine (for example, Patent Documents 1 and 2).

  Further, conventionally, there is also known a technique for controlling the rotational speed of a screw feeder based on the weight of the supplied raw material in an extrusion molding machine that can supply the raw material measured by the raw material measuring unit to the screw feeder. (Patent Document 3).

JP 2004-000020 A JP 2003-169623 A JP 11-000945 A

  Here, in patent documents 1 and 2, it is thought that the weight of the seasoning supplied from the seasoning supply device is controlled by the rotation angle of the screw. That is, in the systems of Patent Documents 1 and 2, it is considered that the rotation angle of the screw is determined without considering the weight of the seasoning actually supplied. As a result, the seasoning process may not be performed with uniform quality depending on the condition of the stored seasoning and the type of seasoning.

  Moreover, with the technique described in patent document 3, the weight of the raw material supplied to the screw feeder is measured, and only the rotation speed of a screw feeder is controlled based on this measurement result. That is, in the technique described in Patent Document 3, the weight of the raw material actually supplied from the screw feeder to the extrusion molding machine is not taken into consideration, and as a result, a molded product with uniform quality may not be obtained. is there.

  Accordingly, an object of the present invention is to provide a powder supply machine and a seasoning system that can execute a good powder supply process regardless of the type of powder stored in the storage unit and the storage state of the powder.

  In order to solve the above-mentioned problems, the invention of claim 1 is a powder supply machine for supplying powder, and stores the powder stored in the storage unit and the powder stored in the storage unit each time. A conveying unit that supplies a predetermined amount of powder to a downstream device located downstream as viewed from the conveying direction of the powder, a weight measuring unit that measures the weight of the powder supplied to the subsequent process by the conveying unit, and a rear In the powder supply mode for supplying powder to the process, based on the set feed amount corresponding to the transport amount of the powder transported for each powder supply, and the supply weight for each powder supply measured by the weight measuring unit, Control capable of performing processing for calculating a feed amount per unit weight, processing for resetting the set feed amount from a predetermined supply weight for each powder supply and the feed amount per unit weight A section.

  Further, the invention of claim 2 is a powder feeder for supplying powder, wherein the storage unit stores the powder, the powder stored in the storage unit is transported, and a predetermined amount of powder is supplied each time. , A transport unit for supplying to the downstream device located downstream as viewed from the powder transport direction, a weight measuring unit for measuring the weight of the powder supplied to the post process by the transport unit, and supplying the powder to the post process Prior to the processing to be performed, in the teaching mode for setting a set feed amount corresponding to the transport amount of the powder transported for each powder supply, an initial value of the set feed amount and a predetermined supply weight for each powder supply And a control unit capable of executing processing for calculating the set feed amount based on the supply weight for each powder supply measured by the weight measurement unit.

  Further, the invention of claim 3 is the powder feeder according to claim 1 or 2, wherein the control unit is configured to supply a powder weight and powder supply when the powder supply is performed a plurality of times. The average supply weight calculated based on the number of times is used as the supply weight for each powder supply.

  Further, the invention of claim 4 is the powder feeder according to any one of claims 1 to 3, wherein the transport section extends in the horizontal direction from the lower part of the storage section, and the internal space is the A cylinder member that communicates with a storage space of the storage section; and an internal space of the cylinder member and a storage space of the storage section, and a screw member that is rotatable, and is stored in the storage section. When the screw member is rotated, the powder is conveyed from the storage part to the cylindrical member, and the set feed amount is a rotation angle of the screw member.

  Further, the invention of claim 5 is the powder feeder according to any one of claims 1 to 4, wherein the weight measuring unit measures the weight of the storage unit and the transport unit before and after the powder supply, The supply weight of the powder supplied to the post-process is measured.

  The invention of claim 6 is the powder feeder according to any one of claims 1 to 5, wherein the storage section has a stirring section for stirring the stored powder by swinging. It is characterized by.

  According to a seventh aspect of the present invention, in the powder supply machine according to any one of the first to sixth aspects, the weight measuring unit measures the supply weight of the powder using a load cell.

  The invention of claim 8 is a seasoning system, wherein the combination weighing machine measures the package by combination weighing, the powder feeder according to any one of claims 1 to 7, and the combination weighing. From the seasoning machine, a seasoning machine that performs seasoning by mixing the packaged material supplied from the machine and the powder supplied as a seasoning from the powder supply machine, and the bag making of the packaging material A packaging machine that fills the bags to be supplied with the supplied packaged goods, and the control unit is designated via an input unit that accepts a pre-registered product type from the user In the case, based on the attribute data corresponding to the product, the weight of the package to be weighed by the combination weighing machine, the kind and weight of the powder supplied by the powder feeder, and the packaging machine used. And setting the type of packaging material, the.

  According to the first and third to eighth aspects of the invention, in the powder supply mode, the set feed amount corresponding to the transport amount of the powder transported for each powder supply and the weight measurement unit are used. The feed amount per unit weight can be calculated from the supplied powder weight. Further, the set feed amount can be reset based on the feed amount per unit weight and the predetermined supply weight for each powder supply.

  Thereby, the setting feed amount according to the kind of the powder stored in the storage part and the storage situation of the powder can be set for each powder supply. Therefore, the accuracy of the supply weight of the powder supplied to the post process can be improved.

  According to the invention described in claims 2 to 8, in the teaching mode, the initial value of the set feed amount, the predetermined supply weight for each powder supply, and the powder measured by the weight measuring unit The set feed amount corresponding to the powder conveyance amount can be calculated on the basis of the supplied weight. Therefore, the burden on the user can be reduced in the teaching process of the set feed amount.

  In particular, according to the third aspect of the present invention, the average supply weight for each powder supply can be calculated based on the powder supply weight when the powder supply is performed a plurality of times. As a result, the set feed amount can be calculated based on the average supply weight in which the influence of fluctuations in the supply weight measured for each powder supply is minimized. Therefore, the accuracy of the supply weight of the powder supplied to the post process can be further improved.

  In particular, according to the sixth aspect of the invention, the powder storage state can be made substantially uniform by stirring the powder stored in the storage unit. Therefore, the accuracy of the supply weight of the powder supplied to the post process can be further improved.

  In particular, according to the invention described in claim 8, when a pre-registered product type is designated by the user, based on the attribute data corresponding to this product, the packaged items to be weighed by the combination weighing machine. The weight, the type and weight of the powder supplied by the powder supply machine, and the type of packaging material used in the packaging machine are set. Therefore, the seasoning system can easily execute processing according to the product, and the burden on the user can be reduced.

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

<1. Seasoning system configuration>
FIG. 1 is a front view showing an example of the entire configuration of a seasoning system 1 according to an embodiment of the present invention. Here, the seasoning system 1 measures a certain amount of a packaged item (for example, snack snacks such as potato chips) X, performs a seasoning process on the measured packaged item X, and performs a seasoning process. It is the seasoning line which packages the to-be-packaged item X.

  As shown in FIG. 1, the seasoning system 1 mainly includes a combination weighing machine 10, a seasoning machine 20, a vertical bag making and packaging machine 30, and a seasoning supply machine 40. 1 and the subsequent drawings have an XYZ orthogonal coordinate system in which the Z-axis direction is a vertical direction and the XY plane is a horizontal plane, as necessary, in order to clarify the directional relationship. .

  The combination weighing machine 10 measures a certain amount of the packaged item X and supplies the measured packaged item X to the seasoning machine 20 disposed below. As shown in FIG. 1, the combination weighing machine 10 mainly includes a dispersion feeder 11, a trough 12, a pool hopper 13, a weighing hopper 14, a collecting chute 15, and a timing hopper 16.

  When the package object X to be weighed is supplied to the combination weighing machine 10, the supplied package object X is dropped near the center of the dispersion feeder 11. Further, as shown in FIG. 1, a plurality of troughs 12 are provided on the periphery of the dispersion feeder 11. Further, the dispersion feeder 11 and the trough 12 are given vibrations from a vibrating device (not shown). As a result, the articles to be packaged X supplied to the dispersion feeder 11 fall via the troughs 12 and are stored in the corresponding pool hoppers 13.

  Each of the plurality of pool hoppers 13 is disposed above the corresponding weighing hopper 14 and temporarily stores an article X to be packaged supplied to the weighing hopper 14. Each of the plurality of weighing hoppers 14 includes a weight detector (for example, a load cell: not shown) that measures the weight of the package X supplied from the corresponding pool hopper 13.

  When the weight value of the package X stored in each weighing hopper 14 is detected, the combination closest to the desired value is selected from the sum obtained by the combination of the weight values. When the packages X are discharged from the weighing hopper 14 corresponding to this combination toward the collecting chute 15, the discharged packages X are collected in the timing hopper 16. The timing hopper 16 is opened at a timing according to the operation state of the seasoning machine 20, so that the package X weighed to a constant weight is supplied to the seasoning machine 20.

  A certain amount of the package X discharged to the collecting chute 15 is supplied to the seasoning machine 20. In addition, to the weighing hoppers 14 that are emptied after the packaged items X are discharged, the packaged products X are supplied from the corresponding pool hoppers 13 to the weighing hoppers 14 and are replenished.

  The seasoning apparatus 20 performs the seasoning process by mixing the package X supplied from the combination weighing machine 10 and the powder supplied as the seasoning from the seasoning supply machine 40. As shown in FIG. 1, the seasoning machine 20 mainly includes a screw member 23 and a cylindrical member 24.

  The cylindrical member 24 is a substantially cylindrical member in which the screw member 23 is inserted in the internal space 27. The screw member 23 is a member that conveys the article X to be packaged supplied from the combination weighing machine 10 to the internal space 27 of the cylindrical member 24 to the vertical bag making and packaging machine 30, and mainly includes the spiral blade 21 and the screw shaft 22. And have.

  The spiral blade 21 is a member whose outer peripheral portion has a spiral shape, and the outer peripheral portion of the spiral blade 21 and the inner peripheral surface of the cylindrical member 24 are in sliding contact. Further, the screw shaft 22 is provided at a substantially central portion in the length direction (substantially X-axis direction) of the spiral blade 21, and the cylindrical member 24 is rotatable about the screw shaft 22 as a rotation shaft. Yes.

  Therefore, as shown in FIG. 1, the space inside the cylindrical member 24 and below the screw shaft 22 is divided into a plurality of sections partitioned by the spiral blade 21 and the inner peripheral surface of the cylindrical member 24. For example, the article X to be packaged supplied from the combination weighing machine 10 is accommodated in the section 27a through the supply port 26a.

  In addition, when the screw member 23 is rotated, the articles to be packaged X accommodated in the respective sections are arranged in the vertical bag-making packaging machine 30 from the end on the combination weighing machine 10 side along the outer peripheral part of the spiral blade 21. It is made to convey toward the edge part. And the to-be-packaged product X which reached | attained the division 27b is supplied to the vertical bag making packaging machine 30 through the discharge port 26b.

  Further, a plurality of (two in the present embodiment) spray guns 41a and 41b communicating with the internal space 27 of the cylindrical member 24 are provided above the compartments 27c and 27d, as shown in FIG. Further, as shown in FIG. 1, each of the injection guns 41 a and 41 b communicates with the receiving portion 44 and the air compressor 43 through a pipe 42.

Therefore, when the air compressor 43 is driven, the powder seasoning measured by the seasoning supply machine 40 and discharged to the receiving portion 44 is sucked into the pipe 42 by the compressed air from the air compressor 43, and the injection gun 41a , 41b. And a powder seasoning is injected toward the divisions 27c and 27d from the injection port of the injection guns 41a and 41b.
The vertical bag making and packaging machine 30 uses the packaging material TF (for example, a film formed of plastic) as the packaging material X that is discharged from the seasoning machine 20 and dropped after the seasoning process is executed by the seasoning machine 20. It is a device for bagging. As shown in FIG. 1, the vertical bag making and packaging machine 30 mainly includes a tube 31, a former 32, a pull-down belt 33, a vertical seal portion 34, and a horizontal seal portion 35.

  The tube 31 and the former 32 are molding mechanisms that mold the packaging material TF as a long object into a cylindrical shape. The tube 31 is a substantially cylindrical member, and its upper and lower ends are open. The former 32 is disposed so as to surround the tube 31. When the packaging material TF is introduced between the tube 31 and the former 32, the introduced packaging material TF is wound around the tube 31 and formed into a substantially cylindrical shape. In addition, the to-be-packaged object X from the seasoning machine 20 is thrown into the tube 31 from the upper end opening of the tube 31.

  As shown in FIG. 1, the pull-down belt 33 and the vertical seal portion 34 are disposed below the tube 31 and the former 32. The pull-down belt 33 conveys the packaging material TF wound around the tube 31 in the direction of arrow AR1 (the flow direction of the packaging material TF: a direction substantially parallel to the Z axis). Further, the vertical seal portion 34 performs vertical seal by thermocompression bonding of an overlapping portion of the packaging material TF wound around the tube 31.

  The lateral seal portion 35 laterally seals the packaging material TF in a direction substantially parallel to the X axis (the width direction of the packaging material TF) by sandwiching the packaging material TF from both ends and thermocompression bonding. Therefore, the packaging material TF below the lateral seal surface is cut and the packaged item X is packed.

  FIG. 2 is a front view showing an example of the configuration of the seasoning supply machine 40. FIG. 3 is a side view showing an example of the configuration of the seasoning supply machine 40. FIG. 4 is a bottom view showing an example of the configuration in the vicinity of the cylindrical member 47 b of the seasoning supply machine 40.

  The seasoning supply machine 40 is a powder supply machine that measures the powder seasoning and supplies it to the seasoning machine 20. As shown in FIG. 2, the seasoning supply machine 40 mainly includes a seasoning storage unit 46, a screw member 47 a, a cylindrical member 47 b, a stirring unit 48, and a weight measurement unit 49.

  The seasoning storage part 46 stores the seasoning supplied from the seasoning supply part 50 in the storage space 46a. As shown in FIG. 3, the shape of the cross section of the storage space 46a substantially parallel to the YZ plane viewed from the X-axis direction is substantially the same. Moreover, about the storage space 46a, the length of the Y-axis direction of the cross section becomes small as it approaches the lower part of the storage space 46a. In the vicinity of the lower portion of the storage space 46a, the length of this cross section in the Y-axis direction is substantially the same as the diameter of the cylindrical member 47b. Therefore, the seasoning reservoir 46 can satisfactorily supply the seasoning stored in the storage space 46a to the screw member 47a.

  Moreover, as shown in FIG. 2, the cylindrical member 47b is provided in the lower part vicinity of the seasoning storage part 46. As shown in FIG. The cylindrical member 47b is a substantially cylindrical member extending in the horizontal direction (substantially in the X-axis direction) from near the lower portion of the seasoning reservoir 46, and its internal space 47d is near the lower portion of the reservoir space 46a of the seasoning reservoir 46. Communicate with.

  The screw member 47a is a member that conveys the seasoning stored in the seasoning storage 46 to the seasoning machine 20 side. As shown in FIG. 2, the screw member 47 a is provided in the internal space 47 d of the cylindrical member 47 b and the storage space 46 a of the seasoning storage part 46. The outer peripheral portion of the screw member 47a has a spiral shape, and the outer peripheral portion and the inner peripheral surface of the cylindrical member 47b are in sliding contact. Furthermore, the screw member 47a is interlocked and connected via a shaft 45c to a drive unit 45a provided in a casing 45 provided in parallel with the seasoning reservoir 46.

  Therefore, when the drive unit 45a is operated and the screw member 47a is rotated about the rotation shaft 45e, the seasoning near the lower portion of the storage space 46a is guided to the inner space of the cylindrical member 47b and received. It is conveyed to the part 44 side. Thus, in this Embodiment, the screw member 47a and the cylindrical member 47b are used as a conveyance part which conveys a seasoning. Moreover, the screw member 47a and the cylindrical member 47b supply a predetermined amount of seasoning for each supply to a downstream device (seasoning machine 20) located downstream as viewed from the seasoning conveyance direction. Then, the seasoning that has reached the discharge port 47 c (see FIG. 4) formed above the receiving portion 44 falls and is received by the receiving portion 44.

  Here, as shown in FIG. 4, the discharge port 47 c is a hole provided above the opening of the receiving portion 44, and is a lower portion of the cylindrical member 47 b and is a length direction (horizontal direction) of the cylindrical member 47 b. : Substantially along the X-axis direction). The size of the discharge port 47 c in the length direction (substantially X-axis direction) is set to be smaller than the diameter of the opening of the receiving portion 44. Therefore, the seasoning discharged from the discharge port 47 c is reliably received by the receiving portion 44.

  The storage space 46 a of the seasoning storage unit 46 is provided with a stirring unit 48 that stirs the stored seasoning. As shown in FIG. 3, the stirring unit 48 mainly includes a shaft 45d, an arm 48a, and a stirring member 48b.

  As shown in FIG. 3, the shaft 45 d is a rod-like member that extends in the horizontal direction (substantially in the X-axis direction), and is provided through the outer wall of the housing 45 and the outer wall of the seasoning reservoir 46. Further, an arm 48a extending outward from the shaft center of the shaft 45d is provided at a portion of the shaft 45d disposed in the storage space 46a, and a cross section in the width direction is substantially fan-shaped at the end (see FIG. 3). ) Is provided.

  Therefore, when the shaft 45d is rotated by operating the drive unit 45b, the agitating member 48b swings around the shaft 45d. Therefore, the seasoning stored in the storage space 46a is agitated by this swinging, and the seasoning storage state is made substantially uniform. As a result, the supply weight of the seasoning supplied to the seasoning machine 20 which is a post-process can be further improved.

  The weight measuring unit 49 is a measuring unit that measures the supply weight of the seasoning supplied to the seasoning machine 20 by a weight detector 49a such as a load cell or force balance. In the present embodiment, the weight measuring unit 49 supports the casing 45 and the seasoning storage unit 46. Furthermore, as described above, the cylindrical member 47 b is provided in the vicinity of the lower part of the seasoning reservoir 46.

  Therefore, the measured values by the weight measuring unit 49 are the weight of the casing 45, the weight of the seasoning storage unit 46, the weight of the cylindrical member 47b, the weight of the screw member 47a, and the storage space 46a of the seasoning storage unit 46. And the weight of the seasoning in the internal space 47d of the cylindrical member 47b. Therefore, the measured value before and after the supply of seasoning is obtained every time, and the measured value after supply is subtracted from the measured value before supply. The supply weight of the seasoning can be easily obtained.

  Returning to FIG. 1, the control unit 90 includes a memory 91 that stores programs, variables, and the like, and a CPU 92 that executes control according to the programs stored in the memory 91. The control unit 90 is electrically connected to an input unit 95 that receives an input operation from a user of the seasoning system 1 (hereinafter, also simply referred to as “user”).

  Thereby, according to the program stored in the memory 91 and the input operation of the user, the CPU 92 measures the objects to be packaged by the combination weighing machine 10, the seasoning process by the seasoning machine 20, and the production by the vertical bag making and packaging machine 30. The bag processing, the seasoning supply processing by the seasoning supply machine 40, and the like can be executed at a predetermined timing.

  For example, when a pre-registered product type is designated by the user via the input unit 95, the control unit 90 uses the combination weighing machine 10 based on the attribute data corresponding to the product stored in the memory 91. Setting the weight of the package to be weighed, the type and weight of the seasoning supplied to the seasoning machine 20 by the seasoning supply machine 40, and the type of packaging material used in the vertical bag making and packaging machine 30 To do.

  In this case, the user can set operating conditions for each of the devices 10, 20, 30, and 40 by one designated operation. That is, each device 10, 20, 30, 40 operates in the reservation interlocking mode based on pre-registered operating conditions. Therefore, the user can cause the seasoning system 1 to easily execute processing according to the product, and can reduce the burden on the user.

<2. Teaching mode operation procedure>
Here, a teaching process executed prior to supplying seasoning to the seasoning machine 20 will be described. Here, in the teaching process, in order to realize supply of a target supply weight (a predetermined supply weight for each seasoning supply) Tg in each seasoning supply, the screw member 47a having a correlation with the supply weight. Is a process of calculating the rotation angle.

  That is, the seasoning guided to the internal space 47d of the cylindrical member 47b is transported through the internal space 47d by a distance corresponding to the rotation angle of the screw member 47a. And when it reaches the discharge port 47c, a seasoning is discharged | emitted from the cylinder member 47b via the discharge port 47c, and is supplied to the seasoning supply machine 40 of a post process. As described above, in the teaching process, a process of calculating the rotation angle of the screw member 47a corresponding to the transport amount is performed for the transport amount of the seasoning that is transported by the cylindrical member 47b for each seasoning supply.

  The target supply weight Tg is a value determined by the type of product (snacks such as potato chips). Further, the rotation angle of the screw member 47a is a value that differs depending on the attribute of the seasoning (for example, the weight per unit volume of the seasoning) even when the same mass is supplied. Furthermore, in the present embodiment, the operation mode in which the seasoning supply unit 40 executes the teaching process is also referred to as “teaching mode”.

  FIG. 5 is a flowchart for explaining the operation procedure of the teaching mode in the present embodiment. In this procedure, the weight measuring unit 49 measures the weight T11 before the seasoning is supplied (S101). Next, the seasoning supply operation is executed n times (S102). That is, for each supply operation, the screw member 47a is rotated by the initial value εa of the rotation angle. Subsequently, the weight T12 after the seasoning is supplied is measured by the weight measuring unit 49 (S103).

  In step S104, the rotation angle εx used as the set feed amount of the screw member 47a for each seasoning supply is the target supply weight Tg for each supply, the number n of times of supply, the weight T11 before supplying the seasoning, the seasoning Is obtained by Equation 1 based on the weight T12 after supplying n times and the initial value εa of the rotation angle (S104).

          εx = n · Tg · εa / (T11−T12) Equation 1

  Thereby, when a user produces a new product in the seasoning system 1, the user operates the seasoning supply unit 40 in the teaching mode even when selecting the type and weight of the seasoning according to the product. Thus, the teaching process can be easily executed. Therefore, the rotation angle εx of the screw member 47a for each seasoning supply can be easily calculated. As a result, the burden on the user and the man-hours required for the teaching process can be reduced in the teaching process, and the productivity of the entire seasoning system 1 can be improved.

<3. Seasoning Supply Mode Operation Procedure>
FIG. 6 is a flowchart for explaining the operation procedure of the seasoning supply mode (powder supply mode) in the present embodiment. Here, the control of the rotation angle of the screw member 47a executed when the seasoning is supplied to the seasoning machine 20 will be described with reference to FIG.

  In this control procedure, first, the weight T21 before the seasoning is supplied is measured by the weight measuring unit 49 (S201). The measurement result is stored in a variable V21 secured in the memory 91. Next, the seasoning supply operation is executed once (S202), and the weight T22 after the supply operation is measured (S203). The measurement result is stored in a variable V22 secured in the memory 91.

  Subsequently, in step S204, the rotation angle Kt of the screw member 47a per unit weight is the target supply weight Tg for each seasoning supply, the number n of seasonings supply, and the seasoning supply weight when n times is supplied. Based on W and the rotation angle εb of the screw member 47a for each seasoning supply, it is obtained by Equation 2.

          Kt = n · εb / W Equation 2

  However, the supply weight W of the seasoning when n times of supply is obtained from the weight T21 before supply of the seasoning and the weight T22 after supply of the seasoning is obtained by Equation 3.

          W = Σ (T22−T21) Expression 3

  Thus, in Formula 2, when n = 1, based on the supply weight of the seasoning for each supply, and when n ≧ 2, the supply weight of the seasoning when supplied n times The rotation angle Kt of the screw member 47a per unit weight is obtained based on the average value (average supply weight).

  Subsequently, in step S204, the rotation angle εb used as the set feed amount of the screw member 47a is reset by using the obtained rotation angle Kt of the screw member 47a per unit weight. That is, the rotation angle εb after the resetting is obtained by Equation 4 based on the target supply weight Tg for each seasoning supply and the rotation angle Kt per unit weight.

          εb = Kt × Tg Equation 4

  In step S206, the value stored in the variable V22 is substituted for the variable V21 stored in the memory 91, and the process returns to step S202.

  Thus, the seasoning supply machine 40 of this Embodiment resets the rotation angle (epsilon) b for every seasoning supply according to the kind of seasoning stored in the seasoning storage part 46, and the storage condition of seasonings. be able to. Therefore, the supply precision of the seasoning supplied to the seasoning machine 20 which is a post process can be improved, and the seasoning quality of the package can be improved.

  Also, as shown in Equations 2 and 3, in the present embodiment, when the number of times of supply is plural (n ≧ 2), the average value (W / n) of the seasoning supply weight, that is, the seasoning The moving angle of the supply weight can determine the rotation angle Kt per unit weight.

  Therefore, even when the supply weight of the seasoning from the seasoning supply machine 40 to the seasoning machine 20 suddenly changes greatly, the rotation angle Kt per unit weight that suppresses the influence from the change to the minimum. The seasoning quality of the package can be maintained.

<4. Advantages of seasoning supply machine and seasoning system of this embodiment>
As described above, the seasoning supply unit 40 according to the present embodiment can easily set the rotation angle εx of the screw member 47a for each seasoning supply by the teaching process performed prior to supplying the seasoning to the seasoning machine 20. Can be calculated. Therefore, the burden on the user and the man-hours required for the teaching process can be reduced in the teaching process, and the productivity of the entire seasoning system 1 can be improved.

  Moreover, the seasoning supply machine 40 of this Embodiment can reset rotation angle (epsilon) b for every supply of a seasoning based on the supply condition of a seasoning. Therefore, the supply precision of the seasoning supplied to the seasoning machine 20 which is a post process can be improved, and the seasoning quality of the package can be improved.

<5. Modification>
Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made.

  In this Embodiment, although the control part 90 demonstrated as what controls operation | movement of the combination weighing machine 10, the seasoning machine 20, the vertical bag making packaging machine 30, and the seasoning supply machine 40, it is limited to this. Not a thing.

  For example, a device-side control unit corresponding to each of the devices 10, 20, 30, and 40 and a central control unit that controls the operation of these device-side control units may be provided. In this case, the processing in the teaching mode and the seasoning supply mode may be executed by the control unit on the seasoning supplier 40 side, and the operation condition setting processing in the reservation interlocking mode may be executed by the central control unit.

It is a front view which shows an example of the whole structure of the seasoning system in embodiment of this invention. It is a front view which shows an example of a structure of a seasoning supply machine. It is a side view which shows an example of a structure of a seasoning supply machine. It is a bottom view which shows an example of the structure of the cylindrical member vicinity of a seasoning supply machine. It is a flowchart for demonstrating the operation | movement procedure of teaching mode. It is a flowchart for demonstrating the operation | movement procedure of seasoning supply mode.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seasoning system 10 Combination weighing machine 20 Seasoning machine 30 Vertical bag making packaging machine 40 Seasoning supply machine 42 Piping 43 Air compressor 44 Receiving part 45 Case 45 Noun 45a Driving part 45b Driving part 46 Seasoning storage part 46a Storage space 47a Screw member 47b Cylindrical member 47c Discharge port 47d Internal space 48 Stirring unit 48a Arm member 48b Stirring member 49 Weight measuring unit 49a Weight detector X Package

Claims (8)

A powder feeder for supplying powder,
(a) a reservoir for storing powder;
(b) Conveying the powder stored in the storage unit and supplying a predetermined amount of powder to a downstream device located downstream when viewed from the powder conveyance direction,
(c) a weight measuring unit that measures the weight of the powder supplied to the subsequent process by the transport unit;
(d) In the powder supply mode for supplying powder to the subsequent process,
1) Processing to calculate the feed amount per unit weight based on the set feed amount corresponding to the transport amount of the powder transported for each powder supply and the supply weight for each powder supply measured by the weight measuring unit When,
2) Processing for resetting the set feed amount from a predetermined supply weight for each powder supply and the feed amount per unit weight;
A control unit capable of executing
A powder feeder characterized by comprising: A powder feeder for supplying powder,
(a) a reservoir for storing powder;
(b) Conveying the powder stored in the storage unit and supplying a predetermined amount of powder to a downstream device located downstream when viewed from the powder conveyance direction,
(c) a weight measuring unit that measures the weight of the powder supplied to the subsequent process by the transport unit;
(d) Prior to the process of supplying the powder to the subsequent process, in the teaching mode in which the set feed amount corresponding to the transport amount of the powder transported for each powder supply is set, the initial value of the set feed amount is determined in advance. A control unit capable of executing processing for calculating the set feed amount based on the supplied weight for each powder supply and the supply weight for each powder supply measured by the weight measurement unit;
A powder feeder characterized by comprising: In the powder feeder according to claim 1 or 2,
The control unit uses an average supply weight calculated based on the supply weight of the powder supplied when the powder supply is performed a plurality of times and the number of supply times of the powder as the supply weight for each powder supply. A powder feeder characterized by. In the powder feeder according to any one of claims 1 to 3,
The transport unit is
(b-1) a cylindrical member extending in the horizontal direction from the vicinity of the lower portion of the storage portion, and an internal space communicating with the storage space of the storage portion;
(b-2) a screw member that is provided in the internal space of the cylindrical member and the storage space of the storage part and is rotatable;
Have
The powder stored in the storage unit is conveyed from the storage unit to the cylindrical member by rotating the screw member,
The powder feeding machine, wherein the set feed amount is a rotation angle of the screw member. In the powder feeder according to any one of claims 1 to 4,
The weight measuring unit measures the weight of the powder supplied to the subsequent process by measuring the weight of the storage unit and the transport unit before and after the powder supply. In the powder feeder according to any one of claims 1 to 5,
The reservoir is
An agitation unit for agitating the powder stored by swinging;
A powder feeder characterized by comprising: In the powder feeder according to any one of claims 1 to 6,
The weight measuring unit measures the supply weight of powder by a load cell. A seasoning system,
A combination weighing machine that weighs the items to be packaged by combination weighing;
A powder feeder according to any one of claims 1 to 7,
A seasoning machine that performs a seasoning process by mixing the material to be packaged supplied from the combination weighing machine and the powder supplied as a seasoning from the powder supply machine,
A packaging machine for making a bag of a packaging material and filling the bag to be packed with an article to be packaged supplied from the seasoning machine;
With
The control unit is based on attribute data corresponding to the product when a pre-registered product type is specified via an input unit that receives input from a user.
1) the weight of the package to be weighed by the combination weighing machine;
2) The type and weight of the powder supplied by the powder feeder;
3) the type of packaging material used in the packaging machine;
A seasoning system characterized by setting.

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