JP2008164372A - Device for inspecting filled amount and its method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filled amount inspection device for inspecting the amounts of a processed product filling containers in the middle of their conveyance in a short time and with high accuracy. <P>SOLUTION: The filled amount inspection device 10 weighs tapered containers 116 after being filled up, when the containers 116 to be conveyed intermittently by a conveyor stop. The inspection device 10 is provided with holder plates 12 having a plurality of openings for holding the tapering parts 116a of the containers 116 in the cross direction of the transfer conveyor, weighing means 16 which are installed for openings individually at intervals below the position of filling stops of the holder plates 12 on a more downstream side than a filling area of the transfer conveyor to weigh the containers, and moving up/down means 14 whose upper parts are mounted with the weighing means 16, and which push up via the weighing means 16 in a perpendicular direction the bases of the filled containers supported with the holder plates 12, to separate their tapering parts from the openings. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a container filling amount inspection apparatus and method, and more particularly, to a filling amount inspection apparatus and method for filling a content and inspecting the filling amount of a container being transported.

  2. Description of the Related Art Conventionally, as a device for filling a cup-shaped container having an open top with, for example, yogurt or the like and inspecting a filling amount of a filled product, there is one in which an inspection device is attached to a part on a conveyor. FIG. 11 is an explanatory diagram of a conventional container filling amount inspection apparatus. As shown in the figure, the weighing unit 112 of the filling amount inspection apparatus has an upstream conveyor belt 122, a downstream belt conveyor 124, and a filling amount measurement conveyor 126 attached between the discharging conveyors. The filling amount measuring conveyor 126 is provided with a receiving base 130 that supports the conveyor 127 and a motor 128 that drives the conveyor 127. Further, a load cell 132 that supports the entire weight of the filling amount measuring conveyor 126 is attached below the cradle 130.

The weighing unit 112 configured as described above operates as follows. First, the container 116 filled with the contents is conveyed downstream from the upstream belt conveyor 122. In the middle of the conveyance, the container 116 is transferred to the filling amount measuring conveyor 126. When the weight of the container 116 is added to the load cell 132 that supports the entire weight of the filling amount measuring conveyor 126, the shape of the beam of the load cell 132 is displaced, and a detection signal is output in accordance with the amount of displacement. Thereby, the weight increased / decreased by the transfer of the container 116 can be known (for example, there is Patent Document 1 as a measuring unit including a filling amount measuring conveyor).
Japanese Patent No. 3427945

Structural problems that hinder improvement in measurement accuracy in such a conventional filling amount inspection apparatus will be described below.
As a first problem, since the motor driving the conveyor and the load cell are unitized, the natural vibration generated when the motor is driven vibrates the beam of the load cell. For this reason, the load cell cannot accurately output the displacement due to the weight increase caused by the container, and an error occurs in the detection signal, resulting in low measurement accuracy. This usually means that the load cell beam stabilizes with a certain amount of displacement as the applied weight changes. However, when vibrations or sudden weight changes occur, the beam repeatedly increases and decreases in displacement, resulting in variations in detection signals.

  As a second problem, if a container filled with a filling material is moved while being placed on a conveyor, vibration will occur. Therefore, the detection signal varies, and accurate measurement becomes difficult. This vibration results from air resistance to the moving container. Therefore, the larger and lighter the container, the greater the air resistance and the greater the vibration.

  As a third problem, the weighing unit is composed of a conveyor, a drive motor, and the like, and has a large number of components and a heavy weight. For this reason, the ratio of the weight increase with respect to the total weight added to a load cell becomes small. Therefore, the S / N ratio is lowered. This is because the ratio of the measurement error to the load cell rated capacity is constant, and if the weight of the measuring part is large, the ratio of the measurement error of the load cell to the change in the weight of the container increases.

  Next, structural problems that hinder the improvement of the processing capacity per hour of the filling amount inspection apparatus are shown below. Since a conveyor is used as the container conveying means, when the amount of inspection processing increases, the work is advanced within a limited work time, so that the work time per piece is shortened and the measurement accuracy is lowered. This is because the container is measuring while moving on the conveyor, and therefore when the amount of processing increases, the conveying speed of the conveyor increases and the measurement time is shortened. Further, when the transport speed is increased, the vibration generated when the containers are transferred from the upstream conveyor to the weighing conveyor and from the weighing conveyor to the downstream conveyor affects the displacement amount of the load cell. For this reason, conventionally, it was practical only on a production line with a small amount of processing.

  SUMMARY OF THE INVENTION In order to improve the above-mentioned problems of the prior art, an object of the present invention is to provide a filling amount inspection apparatus and method for inspecting a container filling amount in the middle of conveying a processed product in a short time with high accuracy. .

  In order to achieve the above object, a filling amount inspection apparatus of the present invention is an opening for holding a tapered portion of a container in a filling amount inspection apparatus that measures the container after filling when the tapered container that is intermittently conveyed by a conveyer is stopped. A plurality of holder plates provided in the width direction of the conveyor, and weighing of the containers attached below the filling stop position of the holder plate on the downstream side of the filling area of the conveyor and spaced apart for each opening. Elevating means for attaching the weighing means to the upper part and pushing up the bottom surface of the filled container supported by the holder plate in the vertical direction via the weighing means to separate the tapered portion from the opening; It is characterized by having.

The filling amount inspection device of the present invention is a filling amount inspection device that measures the container when the tapered container that is intermittently conveyed by the conveyance conveyor is stopped. A plurality of openings that hold the tapered portion of the container are provided in the width direction of the conveyance conveyor. A holder plate provided; weighing means for the container mounted below the filling stop position of the holder plate and spaced apart for each of the openings; and the weighing means attached to the upper portion and supported by the holder plate And a lifting / lowering unit that pushes up the bottom surface of the container in the vertical direction via the weighing unit and separates the tapered portion from the opening.
In this case, the weighing unit may be attached to the front and rear of at least one filling unit provided on the conveyor.

  Further, the measuring means may include a cradle having a sliding process on the upper surface contacting the bottom surface of the container. A rail guide that horizontally supports the holder plate along the transport direction may be attached on a chain in the weighing region of the transport conveyor. The elevating means may include a height adjusting unit that can adjust the amount by which the container is pushed up. It is preferable that the longitudinal direction of the holder plate is arranged in the width direction intersecting the transport direction of the transport conveyor, and a plurality of the holder plates are attached to the transport conveyor.

  In the filling amount inspection method of the present invention, the tapered portion of the tapered container is intermittently transported by the transport conveyor while being held by the holder plate of the transport conveyor, and after the weighing means attached below the container when the container is stopped is filled. The container is pushed up to separate the tapered portion from the holder plate, and the filling amount of the container is measured.

  The filling amount inspection apparatus of the present invention includes a holder plate that holds the tapered portion of the container on the conveyor, an elevating unit that pushes up the bottom surface of the container held by the holder plate, and a weighing unit that is attached to the elevating unit. . Therefore, the filling amount of the container can be measured in a state where the tapered portion of the container is separated from the opening of the holder plate when the filling of the next container is stopped. As a result, the container does not come into contact with the holder plate, and is insulated from the drive means of the conveyor serving as the vibration source. Therefore, the detection signal is not affected by vibration. In addition, the filling amount of the container can be measured with high accuracy. By measuring while the filling of the container is stopped, there is no air resistance to the container and the measurement accuracy is improved. Furthermore, since this apparatus has the cradle attached to the upper surface of the weighing | measuring means, the total weight added to a weighing | measuring means becomes only a container and a cradle, and it can make the ratio of the weight increase by a container high. As a result, the rated capacity of the entire apparatus can be kept to a minimum, and the influence of measurement errors inherent in the load cell can be reduced to improve the measurement accuracy.

  Since the measuring unit of the present invention is attached before and after the filling portion, the filling amount of each container can be measured from the difference between the measured values. In addition, since the weighing units are attached before and after the plurality of filling parts, the filling amount of each container for each filling part can be measured from the difference between the measurement values.

  If the cradle is raised while the container held by the holder plate is tilted, the taper portion of the cup hits the peripheral surface of the opening of the holder and a load is applied, making it difficult to weigh an appropriate container weight. Therefore, the cradle of the present invention is provided with a sliding process on the upper surface on which the container is placed. This stabilizes the container position by sliding the bottom of the container on the sliding surface even when the container is tilted when the weighing means is raised and lowered, so that there is no measurement failure in the container weight caused by the container hitting the plate. Can be inspected. Here, as the sliding process, it is preferable to use a resin such as ultra-high density polyethylene on the surface on which the container of the weighing pan is placed, but the coefficient of friction of the container is low even if a metal material such as stainless steel is smoothed. If it is a thing, the same effect is acquired. Thereby, even if it is a short measurement time, a container does not touch a holder plate and can measure accurately.

  A rail guide that supports the holder plate horizontally along the transport direction is mounted on the chain in the weighing area of the transport conveyor along the transport direction, so that the holder plate is held horizontally and the conveyor being transported vibrates up and down. There is nothing. Thereby, the container lifted by the lifting means does not come into contact with the holder plate.

Since the lifting / lowering means that drives the weighing means to move up and down includes the height adjusting unit, the amount of lifting / lowering movement of the container can be adjusted according to the height of the container.
The longitudinal direction of the holder plate is arranged in the width direction intersecting the transport direction of the transport conveyor, and a plurality of holder plates are attached to the transport conveyor. For this reason, a plurality of containers can be transported in parallel along the transport direction and simultaneously inspected for each row, and the processing amount per time can be increased. In addition, since a plurality of products can be inspected at the same time, it can be introduced into a production line with a large amount of processing.

  Embodiments of a filling amount inspection apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. First, a container filling system to which the filling amount inspection apparatus of the present invention is attached will be described. FIG. 1 is a diagram illustrating a schematic configuration of a container filling system including a filling amount inspection apparatus according to an embodiment. The figure (1) shows the side view of a container filling system, (2) shows the F arrow directional view of (1).

  As shown in the figure, the container filling system 100 has a container supply unit 104, a filling unit 106, a filling amount inspection device 10, and a container discharge unit 110 from the upstream side of the transport conveyor 102 as a basic configuration. Since the container supply unit 104 arranges the containers 116 across the width direction intersecting the transport direction of the transport conveyor 102, the direction (arrow F in the figure) orthogonal to the transport direction of the transport conveyor 102 (the arrow 120 direction in the figure). The container 116 is supplied from. In the embodiment, the containers 116 supplied to the transport conveyor 102 move, for example, every eight rows, and stop during the container filling. That is, the container filling system 100 according to the embodiment is configured to perform intermittent conveyance that alternately repeats the movement of the container and the stop at the time of filling the container. The containers 116 being conveyed are filled in the containers at the same time for each row by the eight-row filling unit 106. Then, the container discharge unit 110 changes the direction in the direction intersecting with the conveyance direction (arrow G in the figure) and is conveyed one by one by a discharge conveyor. A defective product discharge section 140 is provided in the middle of the discharge conveyor.

  Next, the filling amount inspection apparatus 10 of the present invention will be described. FIG. 2 shows a partially enlarged view of part A in FIG. FIG. 3 shows a partially enlarged view of a portion B in FIG. FIG. 4 is a view taken in the direction of arrow C in FIG.

  Here, the container 116 according to the embodiment is a cup-shaped container 116 having an opening on the upper surface. The side surface of the container 116 has a taper (tapered portion 116b) that increases in diameter from the bottom surface to the top surface. A flange portion 116 a is formed on the upper surface of the container 116. The taper on the side of the container is an essential condition for the container shape. Therefore, even a container without a flange portion can be applied to the present invention as long as it has a taper.

As shown in FIG. 2, the filling amount inspection apparatus 10 has a holder plate 12, an elevating means 14, and a weighing means 16 as a basic configuration.
The holder plate 12 is a flat rectangular plate, and is attached at both ends in the longitudinal direction between the pair of drive chains 103 of the transport conveyor 102 and in the width direction intersecting the transport direction of the transport conveyor 102 as shown in FIG. ing. A plurality of openings 15 are provided on the plane of the holder plate 12. The opening 15 inserts the container 116 and holds at least one of the flange part 116a of the container 116 formed in a tapered shape whose container side surface is opened upward or the upper end of the tapered part 116b of the container 116. The opening 15 only needs to have a shape that holds the container on the upper surface side of the holder plate 12, and the upper surface and the lower surface are perforated straight as shown in FIG. You may perforate so that it may become large diameter. The holder plate 12 of the present embodiment includes eight openings 15 as an example. The holder plate 12 is attached in a plurality of rows in the width direction of the transport surface of the transport conveyor 102, and moves around along the transport direction 120.

  The filling amount inspection apparatus 10 shown in FIG. 1 is placed on a gantry 18 disposed below the conveyor 102 on the downstream side of the filling unit 106 on the conveyor 102. The upper surface of the gantry 18 is attached in the width direction between the upper surface and the lower surface of the transport surface of the transport conveyor 102 and intersecting the transport direction of the transport conveyor 102. As shown in FIG. 4, the elevating means 14 of the filling amount inspection apparatus 10 includes a cylinder portion 20 near the center of the holder plate 12, and a support base 22 is attached to the tip of the cylinder portion 20. The support base 22 is a flat rectangular plate and is attached to the lower surface of the holder plate 12 so as to face the lower surface with a predetermined interval. In the cylinder portion 20, the cylinder rod is expanded and contracted in the vertical direction by the cylinder mechanism, and the support base 22 at the tip of the rod is moved in a direction approaching or separating from the transport conveyor 102.

  The weighing means 16 is placed on the support base 22. Similar to the lifting and lowering means 14, the weighing means 16 is attached to the downstream side of the filling region of the conveyor. The weighing means 16 includes a plurality of load cells 24 and is attached below the holder plate 12 and spaced apart from each other for each opening. The load cells 24 are respectively attached so as to face the bottom surfaces of a plurality of containers 116 supported by a holder plate 12 at a filling stop position described later. The load cell 24 is configured such that the shape of the beam is displaced and a detection signal is output in accordance with the amount of displacement. The load cell 24 is connected to a control unit 25, which will be described later, and transmits a detection signal. A cradle 26 is attached to the upper surface of the load cell 24. The cradle 26 is located at a position facing the bottom surface of the container that stops when the container is filled, and is arranged at a predetermined interval from the bottom surface of the container 116. Then, the bottom surface of the container 116 is placed on the upper surface of the cradle 26 as the elevating means 14 is raised. The upper surface of the cradle 26 has a low coefficient of friction with the bottom surface of the container 116, high slip characteristics, and a smooth sliding surface. In this embodiment, as an example, ultrahigh density polyethylene, fluororesin, stainless steel, etc. A smoothed metal material is formed on the surface on which the container 116 is placed.

  The control unit 25 is connected to the conveyor 102, the lifting / lowering unit 14, the weighing unit 16, and the defective product discharging unit 140. The control unit 25 can specify the filling amount, position information, and the like of a poorly filled container based on the measurement value of the weighing unit 16.

  FIG. 5 is an explanatory diagram of the rail guide according to the embodiment. FIG. 1A is a partially enlarged view of a portion D in FIG. 4, and FIG. 2B is a side view of a rail guide attached to the conveyor. The rail guide 30 is a flat rectangular plate having a width slightly smaller than the width of the drive chain 103 of the transport conveyor 102. The rail guide 30 is installed on the upper surface of the drive chain 103 of the transport conveyor 102 near the filling amount inspection apparatus 10 by a support member of the transport conveyor body (not shown). The length of the rail guide 30 may be set to be longer than the width of the filling amount inspection apparatus 10 that becomes a measuring region. The drive chain 103 moves on a horizontal straight line by a guide 32 supported from below and a rail guide 30 supported from above.

  Next, an inspection method of the filling amount inspection apparatus having the above configuration will be described. FIG. 6 is an explanatory diagram of the filling amount inspection apparatus according to the embodiment. First, as shown in FIG. 1 (2), containers 116 are supplied onto the conveyor 102 one by one on a straight line in the direction of arrow F from a container supply unit 104 disposed on the upstream side of the container filling system 100. A container 116 having an opening on the upper surface and a side surface formed in a tapered shape is inserted into the eight openings 15 of the holder plate 12, and the tapered portion 116b of the container is held. The holder plate 12 holding the container 116 moves along the transport direction (arrow h in FIG. 6) and stops near the position below the filling nozzle of the filling unit 106. Then, the filling material is filled from the upper surface opening of the stopped container 116 (FIG. 6a). A dotted line in the drawing indicates a filling stop position of the holder plate 12 when filling the container, and the receiving base 26 of the measuring means 16 is disposed below the opening 15 of the holder plate 12.

  After filling, the container 116 moves again along the transport direction (arrow h) until the next downstream container 117 comes below the filling portion 106 (FIG. 6b). Then, the filled container 116 stops above the filling amount inspection apparatus 10 (FIG. 6c). At this time, the container 117 to be filled next is positioned below the filling unit 106. During the stop, the cylinder mechanism of the elevating means 14 extends in the vertical direction, the upper end receiving base 26 pushes up the bottom surface of the container 116, and the tapered portion 116b of the container 116 is separated from the opening 15 of the holder plate 12 (FIG. 6d). ). In the present embodiment, as an example, the cradle 26 is installed at a distance of 5 mm from the bottom of the container 116 held on the holder plate 12, and the container 116 is lifted about 10 mm from the holder plate 12 when the elevating means 14 is raised. Designed to.

  At this time, even if the tapered portion 116b of the container 116 is not placed in the horizontal direction with respect to the opening 15 of the holder plate 12 and is transported in a slightly inclined state, the upper surface of the cradle 26 is slipped. By pushing up the cradle 26, the bottom surface of the container 116 slides on the upper surface of the cradle 26, and the bottom surface and the upper surface of the cradle 26 become parallel so that the container 116 does not get caught in the opening 15 of the holder plate 12. Further, since the rail guide 30 is mounted on the drive chain 103 of the transport conveyor 102 near the filling amount inspection apparatus 10, the drive chain 103 is supported on a horizontal straight line by the lower guide 32 and the upper rail guide 30. Has been. For this reason, since the drive chain 103 is restrained in the vertical deflection, the horizontality of the holder plate 12 is ensured. Therefore, the conveyor 102 does not vibrate in the vertical direction during the conveyance, and does not affect the elevation of the elevating means 14. The container 116 placed on the cradle 26 is weighed by the weighing means 16. In the load cell 24 of the measuring means 16, the shape of the cell beam is displaced by the weight of the container 116, and a detection signal corresponding to the amount of displacement is transmitted to the control unit 25 to be connected.

In the control unit 25, based on the detection signal of the weighing means 16, the position information of the container with the filling amount that is out of the range of the set value compared with the preset set value is specified.
In the container 116 after weighing, the taper portion 116b of the container 116 is held by the holder plate 12 by the cylinder mechanism contracting in the vertical direction (FIG. 6e). In this way, while repeating the filling stop of the next container, the weighed container 116 is intermittently transported to the container discharge section 110 on the terminal side of the transport conveyor 102 (FIG. 6f). In the container discharge unit 110, the container 116 is discharged on a straight line that is in the direction of arrow G intersecting the transport direction 120. A defective product discharge unit 140 is provided in the middle of the discharge path. The defective product discharge unit 140 discharges only defective containers out of the transported containers out of the discharge path by air blowing means or the like based on the position information of the defective products of the control unit.

  FIG. 7 is a view showing a modification of the lifting means. The figure (1) shows the side view of a filling amount inspection apparatus, and the figure (2) shows a front view. The elevating means 14a is provided with a height adjusting unit that can adjust the amount by which the container is pushed up. That is, the elevating means 14a according to the modification uses a direct acting motor 40 instead of the cylinder portion 20 of the elevating means 14 shown in FIG. The linear motor 40 can arbitrarily set the length of the rod by controlling the rotation of the drive motor. For this reason, even if it is a case where a container with different height is used, the moving amount | distance of raising / lowering can be arbitrarily adjusted for every container. Further, four support rods 41 are provided around the linear motion motor 40 around the telescopic rod 40a of the linear motion motor 40 to support expansion and contraction of the telescopic rod 40a.

  FIG. 8 is an explanatory diagram of a filling amount inspection apparatus in which weighing units are attached before and after the filling unit. In this filling amount inspection apparatus 10a, first and second weighing units 42 and 44 are attached before and after the filling unit 106, that is, upstream and downstream in the transport direction 120 with the filling unit 106 as the center. Each of the first and second weighing units 42 and 44 includes the above-described lifting means 14 and the weighing means 16. The first weighing unit 42 measures the weight of the empty container, that is, the container 116 before filling the container when the conveyance is stopped due to the filling of the container by the filling unit 106. Similarly, the second weighing unit 44 measures the weight of the container 116 after filling the container when the conveyance is stopped for filling the container by the filling unit 106. Further, as shown in FIG. 8B, the first and second weighing units 42 and 44 are arranged in series along the transport direction. For this reason, the container 116c before filling can be weighed by the first weighing unit 42, and the weight after filling of the container 116c weighed by the first weighing unit 42 can be weighed by the second weighing unit 44. Both the first weighing unit 42 and the second weighing unit 44 are connected to the control unit 25. In the control unit 25, based on the detection signal of the container weighed by the first weighing unit 42 and the detection signal of the second weighing unit 44 that weighed the same container weighed by the first weighing unit 42, The filling amount excluding the weight is obtained, and when a difference is generated as compared with a predetermined set amount to be filled, a defective product outside the set value range is specified. Further, the reference value of the filling amount is compared with the measured amount, and a control signal for correcting the filling amount is transmitted to the filling unit 106.

FIG. 9 is a diagram showing a flowchart of inspection by feedback control according to the embodiment.
When the containers supplied from the container supply unit 102 pass through a predetermined position of the transport conveyor 102, the filling amount inspection apparatus 10a in which the weighing units 42 and 44 are installed before and after the filling unit 106 receives a signal indicating that the product container has been detected. 25 (S200).

  The first weighing unit 42 disposed on the upstream side of the filling unit 106 on the transport conveyor 102 raises the lifting / lowering means 14 of the first weighing unit 42 when the transport is stopped at the time of container filling, so that the cradle 26 is moved to the container 106. Push up the bottom of the. The container (empty container) before filling is weighed by the weighing means 16 (S210).

  The measurement value by the weighing means of the first weighing unit 42 is sent to the control unit 25, and the container weight and the position information of the container 116 are recorded (S220). Here, the position information of the container 116 can be specified as, for example, the n-th row on the transport conveyor 102 and the m-th row before the n-th row.

  Next, the second weighing unit 44 disposed on the downstream side of the filling unit 106 on the conveyor 102 raises the lifting / lowering means 14 of the second weighing unit 44 when the conveyance is stopped at the time of container filling, and the cradle 26 is moved. The bottom surface of the container 116 is pushed up. Then, the filled container is weighed by the weighing means 16 (S230).

  The measurement value obtained by the weighing means of the second weighing unit 44 is sent to the control unit 25, and the container weight and the position information of the container 116 are recorded. Based on the position information of the container 116, the control unit 25 calculates the filling amount of the container by taking the difference between the weight of the empty container by the first weighing unit 42 and the container weight after filling by the second weighing unit 44. (S240).

  Then, the control unit 25 compares the preset value of the filling amount with the calculated filling amount of the container (S250). As a result, if the filling amount does not satisfy the set value range, it is recorded as a filling failure. On the other hand, when the filling amount is included in the set value range, it is determined as a non-defective product and recorded.

  Next, the measured filling amount is compared with the reference value of the filling amount of the filling unit 106 (S260). As a result, when the measured filling amount does not satisfy the range of the reference value of the filling amount of the filling unit 106, correction is performed so that the measured value satisfies the reference value, and this correction signal is fed back to the filling unit 106. The filling amount is controlled (S270). Further, when the measured filling amount satisfies the reference value range of the filling amount of the filling unit 106, the filling amount of the filling unit is maintained and the filling is continued as it is.

  In addition, it can also be set as the structure which does not perform the feedback control shown to S260 in FIG. That is, by the processing up to S250, it is possible to simply compare the filling amount of the container with a predetermined set value and specify and discharge the defective product.

  By the way, the filling material filled in the container may be filled with a mixture composed of a plurality of components in addition to a single component. In such a case, a plurality of filling units are attached to the conveyor for each component of the filling. FIG. 10 is an explanatory diagram of a filling amount inspection apparatus in which weighing units are attached before and after a filling unit provided at least one on a conveyor. This figure shows a configuration in which a first filling unit 106b and a second filling unit 106a are mounted on a transport conveyor as an example. In the apparatus configuration shown in FIG. 8, first and second weighing units 42 and 44 are first attached to the upstream side and the downstream side of the filling unit 106 as shown in FIG. And the 2nd filling part 106a is attached to the downstream of the 1st filling part 106b, and the 3rd measurement unit 46 is attached to the downstream of the 2nd filling part 106a. As described above, the first to third weighing units are arranged in series along the transport direction, are connected to a control unit (not shown), and transmit measurement values.

  The filling amount inspection apparatus having the above-described configuration operates as described below. The transport conveyor stops during container filling by the filling unit, and the basic configuration in which the container weight is measured by the weighing unit during this stop works in the same manner as in FIG. As an operation of this configuration, first, the first weighing unit 42 measures the weight of the container before filling. Next, the second weighing unit 44 measures the weight of the container after filling by the first filling unit 106b. In the control unit, the filling amount of the first filling unit 106b can be obtained by calculating the difference between the container weight of the second weighing unit 44 and the container weight of the first weighing unit 42 (tare).

  Next, the third weighing unit 46 weighs the container weight after filling by the first filling unit 106b and the second filling unit 106a. The control unit can obtain the filling amount of the second filling unit 106a by taking the difference between the container weight of the third weighing unit 46 and the container weight of the second weighing unit 44. Further, the control unit obtains the total filling amount by the first filling unit 106b and the second filling unit 106a by taking the difference between the container weight of the third weighing unit 46 and the container weight of the first weighing unit 42. it can. A control part specifies the positional information on the container which deviates from a setting value based on the result of measurement. The number of filling units can be arbitrarily changed in design, and the weighing unit can be arbitrarily set according to the number of filling units. Thereby, the filling amount for every filling part can be measured.

It is a figure showing the composition outline of the container filling system provided with the filling amount inspection device concerning an embodiment. The partial enlarged view of the A section in FIG. 1 is shown. The partial enlarged view of the B section in FIG. 2 is shown. The C arrow line view in FIG. 1 is shown. It is explanatory drawing of the rail guide which concerns on embodiment. It is explanatory drawing of the filling amount inspection apparatus which concerns on embodiment. It is a figure which shows the modification of an raising / lowering means. It is explanatory drawing of the filling amount inspection apparatus which attached the measurement unit before and behind the filling part. It is a figure which shows the flowchart of the test | inspection by the feedback control which concerns on embodiment. It is explanatory drawing of the filling amount inspection apparatus which attached the measurement unit to the several filling part. It is explanatory drawing of the conventional filling amount inspection apparatus of a container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ......... Filling quantity inspection apparatus, 12 ......... Holder plate, 14 ......... Elevating means, 15 ......... Opening, 16 ......... Measuring means, 18 ...... Mount, 20 ...... Cylinder part, 22 ......... Supporting base, 24 ......... Load cell, 25 ......... Control section, 26 ......... Reception base, 30 ......... Rail guide, 32 ......... Guide, 40 ......... Linear motor, 41 ... ... support rod, 42 ... 1st weighing unit, 44 ... 2nd weighing unit, 46 ... 3rd weighing unit, 100 ... ... container filling system, 102 ... ... conveyor, 103 ......... Drive chain, 104 ......... Container supply section, 106 ......... Filling section, 110 ......... Container discharge section, 112 ......... Measurement section, 116 ......... Container, 122 ......... Upstream belt conveyor , 124 ......... Downstream belt conveyor, 126 ......... Hamaryou measuring conveyor, 128 ......... motor, 130 ......... pedestal, 132 ......... load cell, 140 ......... defective discharge unit.

Claims (8)

In the filling amount inspection device for weighing the container after filling when the tapered container that is intermittently conveyed by the conveyor is stopped,
A holder plate having a plurality of openings for holding the tapered portion of the container in the width direction of the transport conveyor;
The container weighing unit attached below the filling stop position of the holder plate on the downstream side of the filling region of the transport conveyor and spaced apart for each opening;
Elevating means for attaching the weighing means to the upper part and pushing up the bottom surface of the container after filling supported by the holder plate in the vertical direction via the weighing means to separate the tapered portion from the opening;
A filling amount inspection apparatus comprising: In the filling amount inspection device for measuring the container when the tapered container that is intermittently conveyed by the conveyor is stopped,
A holder plate having a plurality of openings for holding the tapered portion of the container in the width direction of the transport conveyor;
The container weighing means mounted below the holder plate filling stop position and spaced apart for each opening, and the weighing means are attached to the upper part, and the bottom surface of the container supported by the holder plate is measured. A weighing unit comprising lifting and lowering means that pushes up vertically through the means and separates the tapered portion from the opening;
A filling amount inspection apparatus comprising:   The filling amount inspection apparatus according to claim 2, wherein the weighing unit is attached to the front and rear of at least one filling unit provided on the conveyor.   The filling amount inspection apparatus according to any one of claims 1 to 3, wherein the weighing means includes a cradle having a top surface that contacts the bottom surface of the container.   The filling amount inspection apparatus according to any one of claims 1 to 4, wherein a rail guide that horizontally supports the holder plate along a conveyance direction is attached to a chain in a measurement region of the conveyance conveyor.   The filling amount inspection apparatus according to claim 1, wherein the elevating unit includes a height adjusting unit that can adjust an amount by which the container is pushed up.   The longitudinal direction of the said holder plate is arrange | positioned in the width direction which cross | intersects the conveyance direction of the said conveyance conveyor, and the said holder plate was attached to the said conveyance conveyor two or more, The any one of Claim 1 thru | or 6 characterized by the above-mentioned. Filling quantity inspection device. While holding the tapered portion of the tapered container with the holder plate of the transfer conveyor, intermittently transfer with the transfer conveyor,
When the container is stopped, the container after filling is pushed up together with the weighing means attached below the container to separate the tapered portion from the holder plate,
A filling amount inspection method, wherein the filling amount of the container is measured.

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