JP2018155647A - Combination measuring device, measuring system, and rotational table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combination measuring device which can make an efficient measurement of even a measurement target object that is not easily slid and thus is not easily carried automatically to a hopper.SOLUTION: The combination measuring device includes: a plurality of hoppers annularly arranged, the hoppers containing and discharging a measurement target object supplied from the outside; and a rotational table including a rotatable annular top plate, the rotational table being arranged so that the top plate surrounds the hoppers.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a combination weighing device, a weighing system, and a rotary table.

  2. Description of the Related Art A combination weighing device that measures the weight value of articles that are respectively input into a plurality of hoppers from the outside and performs combination weighing using the measured weight value is known. As such a combination weighing device, for example, Patent Document 1 discloses a dispersion table that transports an object to be weighed in the outer peripheral direction by rotating, and a plurality of linear feeders (radiation feeders) arranged radially around the dispersion table. ) And a stock hopper (hopper) provided below each linear feeder.

JP 2001-183224 A

  However, for example, an object to be weighed with a large amount of water such as chicken is difficult to slip on the contact surface with the dispersion table and the linear feeder, and thus may not be properly dispersed or transported. In such a case, it becomes difficult to convey the object to be weighed to the hopper by automatic conveyance.

  Therefore, an object of the present invention is to provide a combination weighing device and a weighing system capable of efficiently weighing even an object to be weighed which is difficult to slide and which is difficult to be automatically conveyed to a hopper. Another object of the present invention is to provide a rotary table for use in such a combination weighing device or weighing system.

  A combination weighing device according to the present invention has a plurality of hoppers that are arranged in an annular shape and that store and discharge an object to be weighed supplied from the outside, and a rotary table including a rotatable annular top plate. The table is arranged such that an annular top plate surrounds the plurality of hoppers.

  In this combination weighing device, an object to be weighed placed on a rotary table can be manually put into a hopper by an operator. Therefore, an object to be weighed that is difficult to slide on a dispersion table or the like can be easily put into the hopper and weighed.

  In the combination weighing device of the present invention, the turntable may be divided into a plurality of portions in the circumferential direction of the annular top plate. This facilitates carrying and storing of the rotary table.

  In the combination weighing device of the present invention, the rotary table may be detachable by dividing it into a plurality of parts. Thereby, attachment / detachment of a rotary table becomes easy.

  In the combination weighing device of the present invention, the rotary table may be detachable in a state where a plurality of parts are coupled. Thereby, the operation | work which divides | segments and couple | bonds a rotary table can be abbreviate | omitted.

  The combination weighing device according to the present invention includes a detection unit that detects the amount of the object to be weighed supplied to the rotary table by the supply device, and the supply operation of the supply device and the rotation operation of the rotary table based on the detection result of the detection unit. And a control unit that controls at least one of the above. Thereby, since the supply operation of the supply device or the rotation operation of the rotary table is automatically performed based on the detection result of the detection unit, the supply operation of the object to be measured or the rotation operation of the rotary table by the operator may be omitted. it can.

  In the combination weighing device of the present invention, the control unit is configured so that the object to be weighed is supplied to an area on the annular top plate where the placing amount of the object to be weighed is smaller than the preset placing amount. You may control at least one of the supply operation of a supply apparatus, and the rotation operation of a turntable. As a result, the object to be weighed is automatically supplied to a portion of the annular top plate where the placement amount is small, so that the weighing can be performed more efficiently.

  The combination weighing device of the present invention includes a dispersion table that conveys an object to be measured in the outer circumferential direction, and a plurality of radiations that are arranged along the outer periphery of the dispersion table and convey the object to be weighed discharged from the dispersion table to a plurality of hoppers. And a feeder. Thereby, since the automatic conveyance using a dispersion | distribution table can be used together, the to-be-measured object can be measured more efficiently. Further, without changing the system layout, it is possible to change the object to be weighed so that it can be easily conveyed and to perform weighing by automatic conveyance.

  The weighing system of the present invention is arranged along the outer periphery of the distribution table, the supply device for supplying the object to be weighed, the dispersion table for conveying the object to be weighed supplied by the supply device in the outer peripheral direction, and discharged from the distribution table. A plurality of radiating feeders for transporting the measured objects to be weighed, a plurality of hoppers arranged in an annular shape for receiving and discharging the objects to be weighed discharged from the plurality of radiating feeders, and a plurality of hoppers. And a rotary table including a rotatable annular top plate, and the supply device has a discharge portion that is movably provided so as to be able to supply an object to be weighed on the annular top plate or the dispersion table.

  In the weighing system according to the present invention, since the supply device has a discharge portion that is movably provided so as to supply an object to be weighed on an annular top plate or a dispersion table, the rotary table and the dispersion table of the combination weighing device are provided. Any object can be supplied. Thereby, supply of the to-be-measured object to a rotary table or a dispersion | distribution table can be automated. The operator can pass the supplied object to be measured to another operator by rotating the rotary table. In this way, the weighing object can be weighed more efficiently.

  The weighing system of the present invention further includes a control unit that controls a position at which the object to be weighed is supplied from the supply device, and the control unit supplies the object to be weighed from the supply device onto the annular top plate of the rotary table. It may be possible to switch between the first mode and the second mode in which the objects to be weighed are supplied onto the dispersion table from the supply device. Thus, depending on the type of the object to be weighed, it is possible to switch between the case where the operator manually inputs the object to be weighed into the hopper and the case where the object is automatically conveyed to the hopper.

  In the weighing system of the present invention, the control unit may stop the operation of the distribution table in the first mode. Thereby, it is possible to reduce extra power consumption while not using the distribution table.

  The turntable of the present invention includes a rotatable annular top plate, and the annular top plate is arranged so as to surround a plurality of hoppers arranged in an annular shape in the combination weighing device.

  Since the rotary table of the present invention is designed so as to surround a plurality of hoppers arranged annularly in the combination weighing device, it can be combined with an existing combination weighing device that does not have a rotation table. Easy. Thereby, even in the existing combination weighing device, an object to be weighed that is difficult to slide and difficult to transport can be easily put into the hopper and weighed.

  Therefore, according to the present invention, it is possible to provide a combination weighing device and a weighing system capable of efficiently weighing even an object to be weighed that is difficult to slip and difficult to be automatically conveyed to a hopper. The present invention can also provide a turntable for use in such a combination weighing device or weighing system.

It is a front view which shows the structure of a measurement system. It is a top view which shows the structure of a combination weighing device.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or equivalent part, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 1, the weighing system 10 includes a combination weighing device 1, a transport conveyor (feed device) 50, and a bag making and packaging machine 60. The combination weighing device 1 includes an input chute 2, a dispersion table 3, a plurality of radiation feeders 4, a plurality of pool hoppers (hoppers) 5, a plurality of weighing hoppers 6, a plurality of booster hoppers 7, and a collecting chute 8 A timing hopper 9, a weighing unit 11, a control unit 20, and a rotary table 30. The combination weighing device 1 measures an article A (an article having a variation in unit mass such as agricultural products, fishery products, processed foods, etc.) supplied by the conveyor 50 so as to reach a target measurement value, and is a bag making and packaging machine. 60. The bag making and packaging machine 60 packs the articles A that are measured and supplied by the combination weighing device 1 while forming the film into a bag of a predetermined capacity.

  The input chute 2 is disposed below the discharge unit 51 of the transport conveyor 50. The input chute 2 receives the article A that has been transported from the outside by the transport conveyor 50 and dropped from the discharge section 51 of the transport conveyor 50 and is discharged downward.

  The dispersion table 3 is disposed below the charging chute 2. The dispersion table 3 has a conical conveying surface 3a that spreads downward toward the bottom. The dispersion table 3 vibrates the conveyance surface 3a, thereby uniformly conveying the article A discharged from the charging chute 2 to the top of the conveyance surface 3a toward the outer edge of the conveyance surface 3a.

  The plurality of radial feeders 4 are arranged radially along the outer edge of the transport surface 3 a of the dispersion table 3. Each radiating feeder 4 has a trough 4a extending outward from below the outer edge of the transport surface 3a. Each radiation feeder 4 vibrates the trough 4a to convey the article A discharged from the outer edge of the conveying surface 3a toward the tip of the trough 4a.

  The plurality of pool hoppers 5 are arranged so as to surround a center line CL parallel to the vertical direction. Each pool hopper 5 is disposed below the tip of the trough 4a of each radiation feeder 4. Each pool hopper 5 has a gate 5a that can be opened and closed with respect to its bottom. Each pool hopper 5 temporarily stores the articles A discharged from the front end portion of the corresponding trough 4a by closing the gate 5a. Further, each pool hopper 5 opens the gate 5a to discharge the temporarily stored article A downward.

  The plurality of weighing hoppers 6 are arranged so as to surround the center line CL. Each weighing hopper 6 is disposed below the gate 5 a of each pool hopper 5. Each weighing hopper 6 has a gate 6a that can be opened and closed with respect to the bottom thereof. Each weighing hopper 6 temporarily stores the articles A discharged from the corresponding pool hopper 5 by closing the gate 6a. Further, each weighing hopper 6 opens the gate 6a to discharge the temporarily stored article A downward.

  Each booster hopper 7 is disposed below the gate 6 a of each weighing hopper 6. Each booster hopper 7 has a gate 7a that can be opened and closed with respect to its bottom. Each booster hopper 7 temporarily stores the articles A discharged from the gate 6a side of the corresponding weighing hopper 6 by closing the gate 7a. Further, each booster hopper 7 opens the gate 7a to discharge the temporarily stored article A downward.

  The collecting chute 8 collects the articles A discharged from each booster hopper 7 at the discharge port 8a. The discharge port 8a is located on the lower side and the center line CL with respect to the plurality of booster hoppers 7. The collective chute 8 includes an upper chute portion 81 and a lower chute portion 82. The upper chute 81 receives the articles A discharged from each booster hopper 7 and slides the articles A toward the outlet 8a (that is, the center line CL side and the lower side). The lower chute portion 82 is a truncated cone-shaped cylinder tapered downward, and has an upper opening 82a and a lower opening 82b. The lower chute 82 uses the lower opening 82b as the discharge port 8a, and discharges the article A downward from the discharge port 8a.

  The timing hopper 9 is disposed below the discharge port 8a. The timing hopper 9 has a gate 9a that can be opened and closed with respect to its bottom. The timing hopper 9 temporarily stores the articles A discharged from the collective chute 8 by closing the gate 9a. Further, the timing hopper 9 opens the gate 9 a to discharge the temporarily stored article A to the bag making and packaging machine 60.

  The measuring unit 11 is disposed in a case 13 supported by the frame 12. The weighing unit 11 has a plurality of load cells 11a. Each load cell 11a supports a corresponding weighing hopper 6. When the article A is temporarily stored in each weighing hopper 6, the weighing unit 11 measures a measurement value corresponding to the mass of the article A.

  The control unit 20 is disposed in the case 13. The control unit 20 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The control unit 20 is configured to convey the dispersion table 3 and the radiation feeder 4, open and close the gate 5a of each pool hopper 5, open and close the gate 62 of each weighing hopper 6, and open and close the gate 9a of the timing hopper 9. The operation of each part of the combination weighing device 1 is controlled. In addition, the control part 20 is connected so that communication with the bag making packaging machine 60, the conveyance conveyor 50, and the detection part 38 mentioned later is possible.

  The control unit 20 stores the measurement value measured by the measurement unit 11 and the measurement hopper 6 that stores the article A corresponding to the measurement value in association with each other. The control unit 20 selects a combination of measurement values so that the total value becomes the target measurement value from a plurality of measurement values measured by the measurement unit 11 and associated with each measurement hopper 6. More specifically, the control unit 20 selects a combination of measurement values from a plurality of measurement values output by the measurement unit 11 so that the total value falls within a predetermined range with the target measurement value as a lower limit value. Then, the control unit 20 causes the weighing hopper 6 corresponding to the combination to discharge the article A.

  The charging chute 2, the dispersion table 3, the plurality of radiation feeders 4, the plurality of pool hoppers 5, the plurality of weighing hoppers 6, and the plurality of booster hoppers 7 are supported directly or indirectly by the case 13. The collecting chute 8 and the timing hopper 9 are supported directly or indirectly by the frame 12.

  The turntable 30 includes an annular top plate 31, a support portion 32, and leg portions 33 with casters. The annular top plate 31 is supported by the support portion 32. The annular top plate 31 is rotatable by sliding the annular rail portion provided on the lower surface of the annular top plate 31 in the engagement groove provided on the upper surface of the support portion 32. The rotary table 30 is provided such that the rotation center thereof substantially coincides with the center line CL.

  As shown in FIG. 2, the rotary table 30 can be divided into four portions 31a and can be removed by dividing. The portion 31 a has one of the annular top plates 31 divided into four parts, one of the support parts 32 divided into four parts, and leg parts 33. The parts 31a can be joined together by a fixing member such as a stopper, and the turntable 30 can be assembled again. It should be noted that the operator can lift and remove the rotary table 30 while the four portions 31a are joined.

  The four portions 31a each have a detection unit 38 that includes a load cell 38a. Each load cell 38a supports the annular top plate 31 when the turntable 30 is assembled, and the mass (mounting) of the object to be weighed placed in the region corresponding to each of the plurality of portions of the annular top plate 31. Amount) can be detected. Each load cell 38 a is configured to be able to communicate with the control unit 20, and can transmit a detection result to the control unit 20.

  Returning to FIG. 1, the conveyor 50 is provided with a discharge unit 51 that can swing. As shown in FIG. 1, the transport conveyor 50 rotates the discharge unit 51 so that the tip of the discharge unit 51 is positioned above either the charging chute 2 or the annular top plate 31 by swinging operation. Can be changed.

  A gantry 40 is provided around the combination weighing device 1, and the rotary table 30 is disposed on the gantry 40.

  Hereinafter, an example of the operation and use of the weighing system 10 will be described. The control unit 20 includes a first mode for supplying an object to be weighed from the transport conveyor 50 onto the annular top plate 31 of the rotary table 30, and a second mode for supplying an object to be weighed from the transport conveyor 50 onto the dispersion table 3. , Can be switched to. The operator can appropriately change between the first mode and the second mode.

  In the first mode, the object to be weighed is supplied to the rotary table 30. At this time, an operator arranged around the turntable 30 manually puts an object to be weighed into the pool hopper 5. Here, the rotation operation of the turntable 30 is performed by the manual mode in which the operator manually rotates the annular top plate 31 and the supply operation of the transfer conveyor 50 by the control unit 20 based on the detection result of the load cell 38a and the turntable 30. It is possible to switch to an automatic mode for controlling at least one of the rotational operations. In the manual mode, the operator can manually rotate the annular top plate 31 to move the object to be weighed placed on the annular top plate 31 to himself or others.

  In the automatic mode, each load cell 38 a included in the turntable 30 measures the mass of the object to be weighed placed in the corresponding area described above, and transmits the measured value to the control unit 20. The control unit 20 compares the placement amount set in advance with the transmitted measurement value for each region. The control unit 20 controls the transport conveyor 50 with respect to an area where the measured value is determined to be smaller than a preset loading amount, and directs the discharge unit 51 so that the objects to be weighed are supplied to the area. Change (automatic mode A) or rotate the annular top plate 31 of the turntable 30 to move the area to a position where the object to be weighed is supplied from the discharge unit 51 (automatic mode B). The automatic mode A and the automatic mode B can be appropriately changed by an operator according to the arrangement of surrounding facilities.

  When the operator switches to the first mode, the control unit 20 stops the operation of the distribution table 3.

  In the second mode, the objects to be weighed are supplied from the conveyor 50 to the distribution table 3, and the objects to be weighed are automatically conveyed and weighed.

  The combination weighing device 1 includes a plurality of pool hoppers 5 and a rotary table 30, and the rotary table 30 is arranged so that an annular top plate 31 surrounds the plurality of pool hoppers 5. In this combination weighing device 1, an operator can manually put an object to be weighed placed on the rotary table 30 into a hopper. Therefore, an object to be weighed that is difficult to slide on the dispersion table 3 or the like can be easily put into the hopper and weighed.

  In the combination weighing device 1, the turntable 30 can be divided into four portions 31 a in the circumferential direction of the annular top plate 31. Thereby, carrying and storing of the rotary table 30 are facilitated.

  In the combination weighing device 1, the turntable 30 is detachable by dividing it into four parts 31a. Thereby, attachment / detachment of the rotary table 30 becomes easy.

  In the combination weighing device 1, the turntable 30 is detachable with a plurality of parts coupled together. Thereby, the operation | work which divides | segments and connects the rotary table 30 can be abbreviate | omitted.

  The combination weighing device 1 further includes a load cell 11a and a control unit 20 that controls at least one of the supply operation of the transport conveyor 50 and the rotation operation of the turntable 30 based on the detection result of the load cell 11a. Thereby, the supply operation of the conveyor 50 or the rotation operation of the turntable 30 is automatically performed based on the detection result of the load cell 11a, and thus the supply operation of the object to be measured or the rotation operation of the turntable 30 by the operator is omitted. can do.

  In the combination weighing device 1, the control unit 20 is configured so that the object to be weighed is supplied to an area on the annular top plate 31 in which the placing amount of the object to be weighed is smaller than a preset placing amount. At least one of the rotation operations of the conveyor 50 and the rotary table 30 is controlled. As a result, the object to be weighed is automatically supplied to a portion of the annular top plate where the placement amount is small, so that the weighing can be performed more efficiently.

  The combination weighing device 1 may further include a dispersion table 3 and a radiation feeder 4. Thereby, since the automatic conveyance using the dispersion | distribution table 3 can be used together, the to-be-measured object can be measured more efficiently. Further, without changing the system layout, it is possible to change the object to be weighed so that it can be easily conveyed and to perform weighing by automatic conveyance.

  The weighing system 10 includes a transport conveyor 50, a dispersion table 3, a plurality of radiation feeders 4, a plurality of pool hoppers (hoppers) 5, and a rotary table 30, and the transport conveyor 50 has an annular top plate 31. A discharge unit 51 is provided so as to be movable so that an object to be weighed can be supplied to the top or the dispersion table 3. In the weighing system 10, since the transport conveyor 50 includes the discharge unit 51, the objects to be weighed can be supplied to both the rotary table 30 and the dispersion table 3 of the combination weighing device 1. Thereby, supply of the to-be-measured object to the rotary table 30 or the dispersion | distribution table 3 can be automated. The worker can pass the supplied object to be measured to another worker by rotating the turntable 30. In this way, the weighing object can be weighed more efficiently.

The weighing system 10 further includes a control unit 20 that controls the position at which the objects to be weighed are supplied from the transport conveyor 50, and the control unit 20 places the objects to be weighed on the annular top plate 31 of the rotary table 30 from the transport conveyor 50. And a second mode for supplying an object to be weighed from the conveyor 50 onto the dispersion table 3. Thus, depending on the type of the object to be weighed, it is possible to switch between the case where the operator manually inputs the object to be weighed into the hopper and the case where the object is automatically conveyed to the hopper.
[Modification]

  In the above embodiment, the control unit 20 of the combination weighing device 1 controls the supply operation of the transport conveyor 50, but the transport conveyor 50 may include a control unit that controls the supply operation of the transport conveyor 50. In this case, in the automatic mode A, the control unit of the transport conveyor 50 may directly receive the detection result of the load cell 38a, and the control unit of the transport conveyor 50 may control the direction of the discharge unit 51 based on the detection result.

  In the above-described embodiment, the control unit 20 can be switched between the first mode and the second mode. However, the control unit 20 can switch the mode from the conveyor 50 to the annular top plate 31 of the turntable 30 as a switchable mode. And a third mode for supplying an object to be weighed on the dispersion table 3.

  In the above embodiment, the load cell 38a is provided for each portion 31a of the turntable 30, but when the turntable cannot be divided, an area is set in advance on the support portion 32, and the load cell 38a is set on each set area. May be provided. A plurality of areas may be set in advance for each portion 31a of the turntable 30, and the load cell 38a may be provided on each set area.

  In the above embodiment, the combination weighing device 1 has a plurality of pool hoppers 5, but may not have the pool hoppers 5. In this case, the object to be weighed is directly fed into the weighing hopper 6 from the radiation feeder 4 or manually by the operator.

  In the above embodiment, the combination weighing device 1 has a plurality of booster hoppers 7, but may not have the booster hoppers 7. In this case, the objects to be weighed are directly discharged from the weighing hopper 6 to the collecting chute 8.

  In the above embodiment, the combination weighing device 1 has the distribution table 3, but may not have the distribution table 3. Moreover, in the said embodiment, although the combination weighing | measuring apparatus 1 had the radiation feeder 4, it does not need to have the radiation feeder 4. FIG.

  In the above embodiment, the rotary table can be divided into four parts 31a. However, the number of parts that can be divided is not limited to four, and may be divided into two or more parts.

DESCRIPTION OF SYMBOLS 1 ... Combination measuring device, 2 ... Input chute, 3 ... Dispersion table, 4 ... Radiation feeder, 5 ... Pool hopper (hopper), 6 ... Weighing hopper, 7 ... Booster hopper, 8 ... Collecting chute, 9 ... Timing hopper, 20 DESCRIPTION OF SYMBOLS ... Control part, 11a ... Load cell, 30 ... Rotary table, 31 ... Ring-shaped top plate, 32 ... Supporting part, 33 ... Leg part, 40 ... Mount, 50 ... Conveyor (feeding device), 51 ... Discharge part.

Claims (11)

A plurality of hoppers that are arranged in a ring and store and discharge the objects to be weighed supplied from the outside;
A rotary table including a rotatable annular top plate,
The rotary table is a combination weighing device in which the annular top plate is arranged so as to surround the plurality of hoppers.   The combination weighing device according to claim 1, wherein the rotary table can be divided into a plurality of portions in a circumferential direction of the annular top plate.   The combination weighing device according to claim 2, wherein the turntable is detachable by being divided into the plurality of portions.   The combination weighing device according to claim 2, wherein the turntable is detachable in a state where the plurality of portions are coupled. A detection unit that detects the amount of the object to be weighed supplied to the rotary table by a supply device;
The combination according to any one of claims 1 to 4, further comprising a control unit that controls at least one of a supply operation of the supply device and a rotation operation of the turntable based on a detection result of the detection unit. Weighing device.   The control unit is configured so that the weighing object is supplied to an area of the annular top plate where the loading amount of the weighing object is smaller than a preset loading amount. The combination weighing device according to claim 5, wherein at least one of a supply operation and a rotation operation of the rotary table is controlled. A dispersion table for transporting an object to be weighed in the outer circumferential direction;
A plurality of radiating feeders arranged along the outer periphery of the dispersion table and transporting the objects to be weighed discharged from the dispersion table to the plurality of hoppers, according to any one of claims 1 to 6. Combination weighing device as described. A supply device for supplying an object to be weighed;
A dispersion table for conveying the object to be weighed supplied by the supply device in an outer circumferential direction;
A plurality of radiating feeders arranged along an outer periphery of the dispersion table and transporting the objects to be weighed discharged from the dispersion table;
A plurality of hoppers that are arranged in a ring and that store and discharge the objects to be weighed discharged from the plurality of radiation feeders;
A rotary table including a rotatable annular top plate arranged so as to surround the plurality of hoppers,
The weighing system, wherein the supply device includes a discharge unit that is movably provided so that an object to be weighed can be supplied onto the annular top plate or the dispersion table. A control unit for controlling a position where the object to be weighed is supplied from the supply device;
The control unit includes: a first mode for supplying an object to be weighed from the supply device onto the annular top plate of the rotary table; and a second mode for supplying an object to be weighed from the supply device onto the dispersion table; 9. The weighing system according to claim 8, wherein the weighing system can be switched to.   The weighing system according to claim 9, wherein the control unit stops the operation of the distribution table in the first mode. Including a rotatable annular top plate,
A rotary table in which the annular top plate is arranged so as to surround a plurality of hoppers arranged in an annular shape in the combination weighing device.

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