JP4473188B2 - Shutter device in weighing and filling device of packaging machine - Google Patents

Description

  The present invention relates to a shutter device in a weighing and filling device of a packaging machine that fills a packaged bag to be filled with a certain amount of content, and further includes a content produced by mixing two or more types of granules. It relates to filling the packaging bag as a batched content after weighing each granule. Here, the “granule” is not limited to the size, and includes from a fine powder to a large granule.

Conventionally, an apparatus for measuring a content to a predetermined amount and filling a packaging bag is known from Patent Document 1. According to this, the metering and filling device fills a bag-like packaging bag formed by sticking a pair of wrapping papers with the contents weighed in a certain amount, and stores a hopper for storing the contents. A weighing unit that is disposed below the hopper and has a rotatable rotor, a weighing recess for weighing a certain amount of contents, and a shutter device that opens the lower surface side of the weighing recess, and is disposed below the weighing unit. And a filling unit for filling the packaging bag with the contents weighed by the weighing unit. The rotor arranged in the measuring unit has a guide hole for guiding the contents to the measuring recess. With this configuration, by rotating the rotor supplied with the contents, the contents flow from the guide hole portion of the rotor into the measuring recess and are metered to a certain amount, and the shutter device is moved to move the lower surface of the measuring recess. By opening the side, the packaging bag is filled through the filling portion and manufactured as a packaged product.
Japanese Patent No. 2759586 (see pages 2 to 7, see FIG. 1)

  However, in general, the contents are not composed of only one type of granule, but are often composed of a plurality of granules mixed therein. For example, when the content is a medicine, A granules for relieving the affected area and B granules for protecting the stomach, for example, are included, and the ratio of the inclusion is generally determined as the filling ratio.

  In the conventional metering and filling apparatus, the contents stored in the hopper are collectively stored in the hopper with the filling ratio already determined. And since it is supplied in the state which A granule and B granule were mixed when it is supplied to a measurement part from a hopper, the content finally manufactured as a packaged product is A granule and B granule. Are not necessarily mixed at a predetermined filling ratio. Depending on the contents, this ratio must be mixed almost accurately, which necessitates weighing two types of granules separately and filling them into packaging bags. In addition, there is a need to check whether the filling ratio of the separately weighed granules is accurately weighed.

The present invention solves the above-mentioned problem, and the contents produced by mixing two or more granules can be weighed for each granule and filled in a packaging bag, and the weighing check of each granule can be performed. An object of the present invention is to provide a shutter device in a weighing and filling device of a packaging machine that can perform the above. Therefore, the shutter device in the weighing and filling device of the packaging machine of the present invention is configured as follows. That is,
In the first aspect of the present invention, in order to fill the packaging bag formed in a bag shape with the contents composed of at least two types of granules, a hopper for storing each granule and weighing each granule A shutter device in a weighing and filling device of a packaging machine, comprising: a weighing unit; and a filling unit that collects and collectively collects the granules weighed from each weighing unit,
The measuring section is formed with at least two chambers that are partitioned by a partition plate and separately store the granules, and a measuring recess and a measuring section that store a predetermined amount of granules in the lower portion of each chamber A shutter member capable of opening the measuring concave portion from below in order to fill the filling portion with the granules stored in the filling portion,
The shutter member is arranged to be switchable between a position for simultaneously opening a plurality of granules accommodated in the measuring recess and a position for opening one kind of granule.

  According to a second aspect of the present invention, the shutter member has at least a first position for forming a filling hole capable of communicating with all of the measuring recesses, and at least a filling hole capable of communicating with only one of the measuring recesses. The second position is formed.

  The invention according to claim 3 is characterized in that the shutter member is connected to a driving mechanism which is supported by a machine frame of a packaging machine and reciprocates the shutter member.

  According to a fourth aspect of the present invention, the drive mechanism acts to be able to switch the shutter member to either the first position or at least the second position.

  According to the first aspect of the present invention, the granules stored in the hoppers are stored in the chambers partitioned by the measuring unit, and then moved to the measuring recesses and measured to a predetermined amount. When each granule is weighed to a predetermined amount, the shutter member moves to open the metering recess, and each granule is filled into the packaging bag as a batch through the filling tube.

  Therefore, each granule that constitutes the contents is weighed to a predetermined amount according to the contents, so even if the contents are composed of a plurality of granules, the filling ratio of each granule is accurately ensured. can do.

  At this time, the shutter member can individually measure each granule in addition to the normal weighing and filling operation. Accordingly, it is possible to confirm whether or not the contents filled in one packaged product are mixed with each granule at a predetermined filling ratio, and the quality can be improved.

  The invention of claim 2 specifically shows one form of the shutter member of the invention of claim 1, and according to the invention of claim 2, a filling hole through which all the granules pass is formed in the shutter member. If a first position and a second position for forming a filling hole for passing one kind of granule are provided, when weighing and filling each granule in a normal operation, the first position is set as a weighing recess. When the shutter member is moved to the opposite position and one of the granules is weighed, the shutter member is moved to a position where the second position can communicate with the weighing recess. Accordingly, it is possible to confirm whether or not the contents filled in one packaged product are mixed with each granule at a predetermined filling ratio, and the quality can be improved.

  According to the third aspect of the present invention, the shutter member is coupled to the drive mechanism that reciprocates the shutter member. Therefore, at a predetermined timing, the filling hole of the shutter member can be moved to a position facing the measurement recess, or can be moved to a separated position.

  According to the fourth aspect of the present invention, the drive mechanism that reciprocates the shutter member can perform the switching action between the first position and at least the second position formed on the shutter member. It can be configured compactly without adding. At this time, the position can be switched either automatically or manually.

  A metering and filling apparatus (hereinafter referred to as an apparatus) in a packaging machine according to an embodiment of the present invention will be described with reference to the drawings. The contents to be filled in this apparatus are composed of at least two types of granules. This granule is not limited to the size of the granule as mentioned at the beginning.

  As shown in FIG. 1, the device 10 is arranged at an upper position in the packaging machine M. In the packaging machine M of the embodiment, as shown in FIG. 2, the content in which at least two types (two types in the figure) or more granules are mixed is used as two packaged products 100 (100A, 100B). To manufacture.

  In FIG. 1, a packaging machine M includes an apparatus 10 disposed on the upper part of the machine frame 1, a pair of supply reels 3 and 3 that supply the packaging film F <b> 1 below the apparatus 10 with the apparatus 10 interposed therebetween, and an apparatus 10. And a continuous packaging bag that is formed in the packaging bag F by filling the contents while sealing the packaging film F1 supplied from the pair of supply reels 3 and 3 in a bag shape. A cutter unit 7 that cuts F to form a packaged product 100. The packaged product 100 is weighed by a weighing device 8, and then accumulated in a plurality of stages by a stacking device 9 and banded. It is manufactured as one product.

  As shown in FIGS. 3 to 4, the apparatus 10 is configured to fill the bag making unit 5 with the contents mixed with two types of granules, and stores a hopper 11 for each granule, and a hopper 11. And a filling unit 25 for filling the bag making unit 5 with each granule weighed by each weighing unit 12. In the embodiment, it is assumed that two pieces 100 are manufactured simultaneously. Therefore, the hoppers 11 (11 </ b> A, 11 </ b> B, 11 </ b> C) are arranged in three rows toward the measuring unit 12. Of these, the central hopper 11B is formed with a capacity approximately twice that of the other hoppers 11A and 11C, and the hopper 11A and the hopper 11C are two types of granules constituting one content filled in the packaged products 100A and 100B. One of these is stored, and the hopper 11B stores one of the two types of granules constituting one content filled in the packaged products 100A and 100B, respectively.

  As shown in FIGS. 4 to 6, the measuring unit 12 includes a cylinder (housing) 13 that houses a rotatable rotor 15, and a shutter member 20 that is arranged below the rotor 15 and supplies each granule downward. I have.

  The cylinder 13 includes a housing part 131 that supports the outer peripheral surface of the cylindrical rotor 15 so as to be slidable, and a shaft support part 132 that rotatably supports the shaft part 157 of the rotor 15 on both sides. The support part 132 and the housing part 131 form a laterally U-shaped side view, and a plate 134 that supports the hopper 11 and the granule supply pipe 133 is attached to the upper part. The housing portion 131 has an inner peripheral surface that is in sliding contact with the lower outer peripheral surface of the rotor 15, and forms a measurement recess 14 that is rectangular in plan view.

  Since the measurement recesses 14 are disposed in the respective chambers 151, the measurement recesses 14A facing the first chamber 151A, the measurement recesses 14B1 and 14B2 facing the second chamber 151B, and the measurement recesses 14C facing the third chamber 151C, Will be provided. An adjustment member 141 for adjusting the capacity of the measurement recess 14 is supported at the one end of the measurement recess 14 so as to be supported by the housing 131 so as to adjust the opening area of the lower surface of the measurement recess 14. ing.

  Each shaft support portion 132 on both sides of the housing portion 131 is formed with a through hole 135 for supporting the shaft portion 157 of the rotor 15, and a ring-shaped bearing member 136 is attached to the through hole 135.

  As shown in FIGS. 4 to 5 and 7, the rotor 15 is formed in a cylindrical shape having a blocking wall 158 at both ends and a hollow portion 151 inside, and an upper portion is opened. And in order to comprise the hollow part 151 in three chambers, the groove | channel 152 is formed in the internal peripheral surface of the rotor 15 along the circumferential direction, and the groove | channel 152 is formed in two places in the longitudinal direction. Each groove 152 has an engaging groove 152a formed on the lower inner peripheral surface from the axial center position of the rotor 15, and a through groove 152b formed penetrating the wall portion of the rotor 15 above the axial center. is doing. Then, a partition plate 16 as shown in FIG.

  The hollow portion 151 of the rotor 15 is divided into a first chamber 151A, a second chamber 151B, and a third chamber 151C in order from the left in FIG. 4, and the second chamber 151B includes the first chamber 151A or the first chamber 151A. The length of the third chamber 151C is approximately double. In the upper part of each chamber 151, the aforementioned opening 153 is formed so as to communicate with the three chambers, and in the lower part, a rectangular concave inflow hole 154 is formed through which each granule flows downward. The inflow holes 154 of the first chamber 151A and the third chamber 151C are respectively formed in the vicinity of the second chamber 151B side in the first chamber 151A and the third chamber 151C, and the inflow holes 154 of the second chamber 151B are formed in the second chamber 151B. It is formed at both ends. And the granule supply pipe | tube 133 is inserted toward each chamber 151 lower part of the rotor 15 from the opening part 153, respectively.

  The granule supply pipes 133 inserted toward the inflow holes 154 in the respective chambers 151 are formed integrally with the upper base portion 133a, and extend to the inflow holes 154 of the first chamber 151A. The supply pipe port 133A, the granule supply pipe ports 133B1 and 133B2 extending toward the inflow hole 154 of the second chamber 151B, and the granule supply pipe port 133C extending toward the inflow hole 154 of the third chamber 151C I have. The granule supply pipe ports 133B1 and 133B2 disposed in the center are formed to be branched into two forks to extend toward the two inflow holes 154.

  On the outer peripheral surface of the rotor 15, a slide portion 155 that protrudes from the outer peripheral surface so as to surround the inflow hole 154 around the peripheral portion of the inflow hole 154 and a slide that protrudes from the outer peripheral surface in the vicinity of the blocking walls 158 at both ends along the longitudinal direction. A contact portion 156 is formed. The ground portion 155 and the sliding contact portion 156 have the same outer diameter, and both are in sliding contact with the inner peripheral surface of the housing portion 131 with a small contact area.

  Both end blocking walls 158 in the axial direction of the rotor 15 are respectively formed with shaft portions 157 that are rotatably fitted in through holes 135 formed in the shaft support portion 132 of the cylinder 13. The shaft portion 157 is rotationally driven by a drive source supported on the machine casing 1, for example, a servo motor.

  The opening 153 at the top of the rotor 15 is formed in a size having an angle larger than the rotation angle of the rotor 15 with respect to the circumferential direction of the rotor 15.

  As shown in FIG. 8, the partition plate 16 is formed in the lower semicircular portion and engages with the engaging groove 152 a of the rotor 15, and is formed in the upper semicircular portion and penetrates the rotor 15. A partition plate positioning portion 162 to be inserted into the groove 152b is formed. The partition plate positioning portion 162 is formed to have a larger diameter than the lower engaging portion 161, and the partition plate 16 can position the rotor 15 in the circumferential direction by contacting the wall portion of the rotor 15 at the stepped portion. .

  Furthermore, a V-shaped engaging recess 163 is formed in the left-right symmetrical position in the partition plate positioning portion 162, and a rod-like stopper member 18 disposed in the longitudinal direction of the rotor 15 is inserted into the engaging recess 163. . As shown in FIG. 4, the stopper member 18 is fixed by hexagon socket head cap bolts 159 from the outside of the blocking walls 158 at both ends of the rotor 15 to prevent the partition plate 16 from being lifted and the partition plate 16 to the rotor 15. It can be fixed to. As a result, the partition plate 16 can be attached to the rotor 15 without screws.

  The shutter member 20 is formed in a rectangular plate shape, and is configured to be movable in a direction in which the lower surface of the measuring recess 14 is opened or closed. The shutter member 20 is formed to have a width dimension that opposes the entire area of each chamber 151 of the rotor 15, and forms a filling hole 21 that communicates with the measurement recesses 14 at three positions in the moving direction. .

  That is, as shown in FIG. 9, at the position of the first row formed on the front end side (lower left side of the shutter member 20 in FIG. 9) with respect to the moving direction, the filling that can communicate with the measurement recess 14A and the measurement recess 14B1. The hole 21D1, the measurement recess 14B2, and the filling hole 21D2 capable of communicating with the measurement recess 14C are arranged in parallel. In the position of the second row, a filling hole 21E1 that can communicate with the measuring recess 14B1 and a filling hole 21E2 that can communicate with the measuring recess 14B2 are arranged side by side. At the position of the third row, a filling hole 21F1 that can communicate with the measuring recess 14A and a filling hole 21F2 that can communicate with the measuring recess 14C are arranged side by side.

  Further, as shown in FIG. 10, the shutter member 20 is connected to the drive mechanism 30 via a connecting plate 22 and a pair of linear movement guides 23, 23. The drive mechanism 30 includes a case 31 supported by the machine casing 1, a drive source (servo motor in the illustrated example) 32 disposed on the case 31, a ball screw 34 extending through a coupling 33, A slide arm 35 to which a ball screw 34 is attached and two slide guides 36 for guiding the slide arm 35 to reciprocate linearly are provided. The slide arm 35 extends in a direction perpendicular to the extending direction of the ball screw 34, and is connected to the connecting plate 22 at one end via a connecting rod 37. When the servo motor 32 is driven forward and backward, the ball screw 34 is rotated, and the slide arm 35 is guided by the slide guide 36 and reciprocated by the rotation of the ball screw 34. When the reciprocating movement of the slide arm 35 is transmitted to the shutter member 20, the reciprocating movement of the filling hole 21 of the shutter member 20 between the open position of the measuring recess 14 and the closed position is guided by the linear movement guides 23, 23. In addition, as shown in FIG. 9, the position of the first row, the position of the second row, and the position of the third row can be moved and adjusted as necessary. That is, the adjustment for moving the position of the first row, the position of the second row, and the position of the third row is performed by moving the slide arm 35 along the moving direction of the shutter member 20 by driving the servo motor 32. The fulcrum part 221 that connects the connecting plate 22 and the connecting rod 37 is moved.

  The drive mechanism is not particularly limited, but the drive source may be a rotation of a cam via a link mechanism. If driven by a servo motor as described above, the position of the first row where each granule is weighed during normal continuous driving and the position of the second row or third row where only one single granule is weighed. The movement can be adjusted automatically.

  As shown in FIG. 3, the filling unit 25 includes a filling tube 26 and a moving mechanism 27 that moves the filling tube 26 toward and away from the measuring recess 14. The filling tube 26 has a hopper portion 261 and a guide portion 262 and is formed in a vertically long shape. The filling tube 26 fills the contents into the two packaged articles 100, so that the filling hole 21 of the shutter device 20 is formed in the measuring recess. Opposite the position where 154 is opened, two places will be arranged side by side.

  The moving mechanism 27 is driven by a cam 271 (or a servo motor) and, when receiving the contents, moves the filling tube 26 upward to approach the measuring recess 14 and fills the packaging bag F with the contents. In this case, the filling tube 26 is moved downward to be separated from the measuring recess 14.

  Next, the operation of the apparatus 10 configured as described above will be described.

  As shown in FIGS. 3 to 4, each kind of granule mixed into one content is stored in each hopper 11, and each granule is supplied into each chamber 151 of the rotor 15 through the granule supply pipe 133. ing. For example, the main purpose granule mixed in the packaged products 100A and 100B is stored in the hopper 11B, and the sub target granule is stored in the hopper 11A and the hopper 11C. The granules stored in the hopper 11A and the hopper 11B constitute one content and manufactured as a packaged product 100A, and the granules stored in the hopper 11B and the hopper 11C constitute one content and packaged. Manufactured as 100B.

  In the state of FIG. 11A, the granules supplied to the respective chambers 151 are moved to the measuring recesses 14 to measure the volume of the granules, and the rotor 15 rotates the inlet hole 154 from the bottom dead center position to the clockwise position. In the state of being rotated in the direction, the inflow hole 154 and the measurement recess 14 are not aligned. In addition, the shutter member 20 uses the filling holes 21D arranged in the first row, and in this state, the shutter member 20 is moved to a position where the measuring recess 14 is closed. Further, the adjusting member 141 is adjusted and moved, and the capacity of the measuring recess 14 is set to a predetermined capacity.

  In the shutter member 20, as shown in FIG. 13, the slide arm 35 of the drive mechanism 30 is moved to the tip side of the ball screw 34 by the drive of the servo motor 32, and the filling hole 21D1 and the filling hole of the shutter member 20 are moved. 21D2 is in a position where it can face the measurement recess 14.

  The packaging film F <b> 1 is sent out from the supply reel 3 in FIG. 1, and is formed as a packaging bag F in the bag making unit 5. On the other hand, as shown in FIG. 11 (b), when the rotor 15 is rotated counterclockwise, the inflow holes 154 of the rotor 15 communicate with the measuring recesses 14 and are supplied into the chambers 151 of the rotor 15. Each granule that has been moved is moved to the metering recess 14.

  As shown in FIG. 12A, when the rotor 15 rotates in the clockwise direction and the inflow hole 154 exceeds the measuring recess 14, the scraped portion 155 formed at the peripheral edge around the inflow hole 154 becomes the measuring recess 14. The upper surface is ground and the granules are weighed.

  Then, as shown in FIG. 12B, the shutter member 20 is moved to a position where the filling hole 21 </ b> D communicates with the measurement recess 14. As a result, the measuring recess 14 is opened, and the granules fall toward the filling tube 26 and are filled in the packaging bag F.

  Each granule accommodated in the measurement concave portion 14A and the measurement concave portion 14B1 is filled into the packaging bag F through the filling tube 26A, longitudinally sealed and laterally sealed by the bag making portion 5, and cut by the cutter device 7, and then packaged. Manufactured as a product 100A. Each granule stored in the weighing recess 14B2 and the weighing recess 14C is filled into the packaging bag F through the filling tube 26B, vertically sealed, laterally sealed, cut by the cutter device 7, and cut into the package 100A together with the package 100A. Manufactured.

  Note that the timing when the granules flow out from the measuring recess 14 is performed when the filling tube 26 comes closest to the measuring recess 14.

  As a result, one cycle is completed, and the state returns to the state shown in FIG.

  In addition, in this apparatus 10, it can be checked whether each granule is measured correctly. For example, when checking the weight of the main target granules stored in the hopper 11B, as shown in FIG. 14, the servo motor 32 is driven to move the slide arm 35 from the intermediate position of the ball screw 34 (from the position of FIG. 13). The position is moved back to the servo motor 32 side. As a result, the second-row filling holes 21E1, 21E2 are used in place of the filling holes 21D1, 21D2, and the filling holes 21E1, 21E2 are moved to positions where they can face the measuring recesses 14B1, 14B2.

  Since the lower surfaces of the measurement recess 14A and the measurement recess 14C do not open, the granules stored in the measurement recesses 14B1 and 14B2 can be taken out independently by performing the same operation as the above-described one cycle. .

  Furthermore, when confirming the weight of only the sub-target granules stored in the hopper 11A and the hopper 11C, as shown in FIG. 15, the servo motor 32 is driven to move the slide arm 35 to the original position of the ball screw 34 (see FIG. 14 to a position for returning to the servo motor 32 side). As a result, the filling holes 21F1, 21F2 in the third row are used in place of the filling holes 21E1, 21E2, and the filling holes 21F1, 21F2 are moved to positions where they can face the measurement recesses 14A, 14C.

  Since the lower surfaces of the measurement recess 14B1 and the measurement recess 14B2 are not opened, the granules stored in the measurement recesses 14A and 14C can be taken out independently by performing the same operation as the above-described one cycle. .

  According to the apparatus 10 configured and operated as described above, when filling the packaging bag F with the contents mixed with at least two kinds of granules, the granules constituting the contents are Since each is measured to a predetermined amount according to the contents, the filling ratio of each granule can be ensured accurately.

  In addition, the shutter member 20 that can open the measuring recess 14 has a first position where a filling hole 21 through which all the granules pass is formed, and a second or third where a filling hole 21 through which one kind of granule passes is formed. Therefore, in addition to the usual metering and filling operation, each granule can be weighed independently.

  In addition, the apparatus of this invention is not limited to said form. For example, the configuration for weighing each granule may be a square disk weighing type having a box-shaped case that reciprocates instead of a cylindrical weighing type whose rotor shape is rotatable. Can be weighed for each granule by mounting it according to the shape of the case.

  In the above form, the package is formed with two pieces, but even if there are three or more pieces, the rotor chamber is formed in the same manner as the above form according to the package. can do. Furthermore, even if there are two or more types of granules, the number of rotor chambers and the number of filling tubes can be configured to match each granule.

  Further, the switching movement between the first filling hole and at least the second filling hole in the shutter member may be configured separately from the drive mechanism for reciprocating the shutter member. Furthermore, the drive source constituting the drive mechanism may not be a servo motor but may be another known drive source, for example, a drive source such as a normal motor or cylinder, and the drive mechanism is a drive source of these. You may comprise by the connected cam mechanism, a link mechanism, etc.

It is a whole front view which shows one form of the packaging machine which mounts | wears with the apparatus of this invention. It is a perspective view which shows the packaged goods manufactured with the packaging machine of FIG. 1 is a simplified front view showing an apparatus according to an embodiment of the present invention. FIG. It is an expanded sectional view which shows the measurement part in FIG. It is the same perspective view. It is a perspective view which shows the rotor in the apparatus of FIG. It is explanatory drawing which shows the mounting state of a partition plate and a partition plate. It is the perspective view which looked at the apparatus from the bottom in order to show a shutter member. It is a perspective view which shows the drive mechanism of a shutter member. It is a simplified action figure showing the first half 2 action in 1 cycle of this device. It is a simple action figure showing the latter half 2 action in 1 cycle of this device. It is a simple operation | movement figure which shows the position which switched the shutter member to the 1st position. It is a simple operation | movement figure which shows the position which switched the shutter member to the 2nd position. It is a simple operation | movement figure which shows the position which switched the shutter member to the 3rd position.

Explanation of symbols

M, packaging machine F1, packaging film F, packaging bag 1, machine frame 5, bag making unit 10, device (metering and filling device)
11, hopper 12, weighing unit 13, cylinder (housing)
131, housing part 133, granule supply pipe 14, measuring concave part 15, rotor 151, chamber (hollow part)
152, groove 16, partition plate 18, stopper member 20, shutter member 21, filling hole 22, connecting member 221, fulcrum portion 25, filling portion 26, filling tube 30, drive mechanism 32, servo motor 34, ball screw 35, slide arm 100, packaged goods

Claims (4)

A hopper for storing each granule, a weighing unit for weighing each of the granules, and each of the weighing units in order to fill a packaging bag formed in a bag shape with a content composed of at least two types of granules. A shutter unit in a weighing and filling device of a packaging machine comprising:
The measuring section is formed with at least two chambers that are partitioned by a partition plate and separately store the granules, and a measuring recess and a measuring section that store a predetermined amount of granules in the lower portion of each chamber A shutter member capable of opening the measuring concave portion from below in order to fill the filling portion with the granules stored in the filling portion,
The metering and filling device of a packaging machine, wherein the shutter member is arranged to be switchable between a position for simultaneously opening a plurality of granules accommodated in the metering recess and a position for opening one kind of granules. The shutter device in FIG.  The shutter member is formed with a first position for forming a filling hole capable of communicating with all the measurement concave portions and at least a second position for forming a filling hole capable of communicating with only one of the measurement concave portions. The shutter device in the weighing and filling device of the packaging machine according to claim 1.  3. The weighing and filling apparatus of a packaging machine according to claim 1, wherein the shutter member is connected to a drive mechanism that is supported by a machine frame of the packaging machine and reciprocates the shutter member. The shutter device in FIG.  The shutter device in the weighing and filling device of a packaging machine according to claim 3, wherein the driving mechanism acts so as to switch the shutter member to either the first position or at least the second position.

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