JP5785925B2 - Packaging apparatus and packaging method for sheet-like product group in which a plurality of sheet-like products are stacked - Google Patents

Description

  The present invention relates to a packaging device and a packaging method for a group of sheet products in which a plurality of sheet products are stacked.

  Bulky sheet-like products such as replacement cleaning sheets, disposable diapers, and sanitary napkins are generally displayed and sold in stores with a plurality of sheet-like products contained in a single packaging bag. Yes. That is, in the packaging bag body, a plurality of sheet-like products are stored in a stacked state in the thickness direction of the product, and the mouth portion of the packaging bag body is sealed by heat sealing or the like. Such packaging is performed by an appropriate packaging apparatus.

Patent Document 1 shows an example of this packaging device. The packaging apparatus includes a transport mechanism that transports a sheet product group in which a plurality of sheet products are stacked in the thickness direction to a predetermined insertion standby position, and a sheet product group transported to the insertion standby position. A push-in mechanism for inserting the sheet-like product group into the bag body by being pushed into the bag body from the mouth portion of the packaging bag body, and a seal for sealing the mouth portion of the bag body into which the sheet-like product group is inserted. A stop mechanism.
And the sealing mechanism has a pair of clamping members provided so that the mouth part can be sandwiched from both sides, and the mouth part is closed by sandwiching the mouth part with the pair of clamping members, and The mouth is heated and welded in a sandwiched state to seal the mouth.

JP 2009-202915 A

However, as described above, in the method of closing the mouth portion by sandwiching the mouth portion from both sides of the mouth portion, the mouth portion may be wrinkled.
FIG. 1A and FIG. 1B are explanatory diagrams illustrating the reason why wrinkles approach the mouth portion 5k. FIG. 1A is a schematic longitudinal sectional view of the bag body 5 in which the sheet-like product group 1G is accommodated and the mouth portion 5k is not sealed. The figure is shown, and the BB arrow line view in FIG. 1A is shown in FIG. 1B.

  For example, in the case of the bag body 5 as shown in FIG. 1B, that is, formed by welding the surfaces 5 ss and 5 ss facing each other in the thickness direction in the packaging sheet 5 s at both end portions 5 ew and 5 ew in the width direction. In the case of the formed bag body 5, the opening amount of the mouth portion 5k is large at the center in the width direction, and decreases toward the end. When the mouth portion 5k having such a shape is sandwiched between the pair of sandwiching members 161u and 161d from both sides in the thickness direction, the opening amount is different between the center and the end in the width direction. In the process, the mouth portion 5k is partially slackened, and the slack turns into wrinkles.

  And finally, the mouth part 5k is welded in a state where the wrinkles are approached, and the mouth part 5k having such wrinkles is not only poor in appearance but also has a problem in terms of the sealing performance of the mouth part 5k. .

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a mouth of a packaging bag body into which a sheet-like product group formed by stacking a plurality of sheet-like products is inserted. It is to suppress wrinkles that may occur when sealing the.

The main invention for achieving the above object is:
A package in which a plurality of sheet-like products are stacked in the thickness direction of the sheet-like product and a sheet-like product group is inserted into the packaging bag body from the mouth portion of the packaging bag body to seal the mouth portion. A device,
An outer shell member that is covered with the packaging bag on the outer peripheral surface and includes a passage space through which the sheet-like product group passes;
A push-in mechanism for inserting the sheet-like product group into the bag body by pushing in while sliding the sheet-like product group from the mouth of the packaging bag body toward the bottom of the bag body;
A closing mechanism for closing the mouth part by pulling the mouth part of the bag body in a state in which the sheet-like product group is inserted to both sides in an intersecting direction intersecting a pushing direction of the pushing mechanism;
A sealing mechanism that seals the mouth portion pulled by the closing mechanism ,
The push-in mechanism pushes the sheet-like product group into the packaging bag body indirectly by passing the space for passage through the sheet-like product group while sliding the sheet-like product group, and further pushing the sheet-like product group into the packaging bag body. The packaging bag body is pushed together with the sheet product group to remove the packaging bag body from the outer member, and further to the position of the closing mechanism and the sealing mechanism, for the packaging containing the sheet product group. A packaging device for a sheet-like product group in which a plurality of sheet-like products are stacked, wherein a bag body is pushed in .
Also,
A package in which a plurality of sheet-like products are stacked in the thickness direction of the sheet-like product and a sheet-like product group is inserted into the packaging bag body from the mouth portion of the packaging bag body to seal the mouth portion. A method,
Preparing an outer member provided with a space for passing the sheet-shaped product group on the inner side, with the packaging bag covered on the outer peripheral surface;
The sheet-like product group is inserted into the bag body by pushing the sheet-like product group while sliding toward the bottom of the bag body from the mouth portion of the packaging bag body using a pushing mechanism. When,
Closing the mouth part by pulling the mouth part of the packaging bag body in a state where the sheet-like product group is inserted to both sides in the crossing direction intersecting the pushing direction of the pushing mechanism;
Sealing the mouth in a state of being pulled on both sides in the crossing direction,
The push-in mechanism pushes the sheet-like product group into the packaging bag body indirectly by passing the space for passage through the sheet-like product group while sliding the sheet-like product group, and further pushing the sheet-like product group into the packaging bag body. The packaging bag body is pushed together with the sheet product group to remove the packaging bag body from the outer member, and further to the position of the closing mechanism and the sealing mechanism, for the packaging containing the sheet product group. A packaging method for a sheet-like product group in which a plurality of sheet-like products are stacked, the bag body being pushed in .
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  ADVANTAGE OF THE INVENTION According to this invention, the wrinkles which can be produced when sealing the opening | mouth part of the packaging bag body in which the sheet-like product group formed by stacking several sheet-like products was inserted can be suppressed.

FIG. 1A is a schematic longitudinal sectional view of a packaging bag body 5 in which a sheet-like product group 1G is accommodated and an opening 5k is unsealed, and FIG. 1B is a view taken along the line BB in FIG. 1A. . It is a schematic perspective view of the packaging bag body 5 in which a plurality of sheet-like products 1, 1. 1 is a schematic perspective view of an example of a sheet-like product 1. FIG. 4A is a schematic plan view of the packaging bag body 5, FIG. 4B is a view taken along the line BB in FIG. 4A, and FIG. 4C is a view taken along the line CC in FIG. 4A. FIG. 4D is a schematic plan view of a state before the film 5 s of the material of the packaging bag body 5 becomes the bag body 5. 1 is a schematic side view showing an overall configuration of a packaging device 10. 1 is a schematic side view showing an overall configuration of a packaging device 10. 7A to 7C are explanatory diagrams of the packaging procedure of the packaging device 10. 8A to 8C are explanatory diagrams of the packaging procedure. 9A and 9B are explanatory diagrams of the packaging procedure. 10A to 10D are explanatory views of the packaging procedure. 3 is a schematic perspective view of a bucket 24. FIG. It is the schematic of an example of the drive mechanism of the moving operation | movement of the up-down direction of a pair of holding claws 54u and 54d. 3 is a schematic perspective view of a pusher 41. FIG.

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
A package in which a plurality of sheet-like products are stacked in the thickness direction of the sheet-like product and a sheet-like product group is inserted into the packaging bag body from the mouth portion of the packaging bag body to seal the mouth portion. A device,
A push-in mechanism for inserting the sheet-like product group into the bag body by pushing in while sliding the sheet-like product group from the mouth of the packaging bag body toward the bottom of the bag body;
A closing mechanism for closing the mouth part by pulling the mouth part of the bag body in a state in which the sheet-like product group is inserted to both sides in an intersecting direction intersecting a pushing direction of the pushing mechanism;
And a sealing mechanism that seals the mouth portion pulled by the closing mechanism. A packaging device for a sheet-like product group formed by stacking a plurality of sheet-like products.

  According to such a packaging apparatus, the mouth is closed while partially loosening the mouth by pulling the mouth of the packaging bag with the sheet product group inserted therein. Thus, the mouth portion is almost flattened, but the sealing mechanism seals the mouth portion in this state. Therefore, wrinkles that can occur when the mouth is sealed can be suppressed.

Such a packaging device,
The mouth part has flanges protruding outward in the cross direction at positions on both sides of the cross direction,
The closing mechanism has grip portions on both sides in the intersecting direction to sandwich and grip the collar portion from the thickness direction of the collar portion,
It is desirable that the mouth portion is pulled to both sides in the cross direction by moving the grip portion in a state of gripping the collar portion outward in the cross direction.

  According to such a packaging device, the mouth portion is closed by pulling the collar portions respectively provided on both sides of the mouth portion. Therefore, it becomes possible to reliably transmit the pulling force for closing the mouth part over the entire length in the crossing direction in the mouth part, and thereby the mouth part is almost flattened over the entire length in the crossing direction. can do. Then, the sealing mechanism seals the mouth portion in such a state. Therefore, wrinkles that can occur when the sealing mechanism seals the mouth can be more effectively suppressed.

Such a packaging device,
The push-in mechanism has a pusher that reciprocates back and forth along the push-in direction,
While inserting a part of the pusher into the bag, the pusher moves forward toward the bottom of the bag, thereby pushing the sheet-like product group into the bag.
While the sheet-like product group remains in the bag body, the pusher moves backward to pull out the part of the pusher to the outside of the bag body, and the pusher performs before the forward movement operation. To the position of
In the retreating operation, it is preferable that the movement of the bag body is restricted by the gripping part gripping the collar part.

According to such a packaging apparatus, when the pusher is retracted, a part of the pusher is pulled out from the bag body, and accordingly, a pulling force acts on the bag body in the rear, There is a possibility that the bag body may move backward due to the pulling force. That is, the bag body may be displaced rearward. If it does so, there exists a possibility of having a bad influence on the various processes which should be performed with respect to the said bag body after this.
Here, in this regard, according to the above-described configuration, the movement of the bag body is restricted by the gripping portion gripping the collar portion during the backward movement. Therefore, the rearward displacement of the bag that may occur during the backward movement is reliably prevented, and as a result, various processes to be performed on the bag can be accurately performed thereafter.

Such a packaging device,
The push-in mechanism has a pusher that reciprocates back and forth along the push-in direction,
While inserting a part of the pusher into the bag, the pusher moves forward toward the bottom of the bag, thereby pushing the sheet-like product group into the bag.
While the sheet-like product group remains in the bag body, the pusher moves backward to pull out the part of the pusher to the outside of the bag body, and the pusher performs before the forward movement operation. To the position of
A pressing member capable of switching between a pressing state in which the bag body in a state in which the sheet-shaped product group is inserted is pressed from the outside along the thickness direction and a non-pressing state in which the sheet body is not pressed;
In the backward movement, it is desirable that the pressing member is set in the pressed state.

According to such a packaging apparatus, when the pusher is retracted, a part of the pusher is pulled out from the bag body, and accordingly, a pulling force acts on the bag body in the rear, There is a possibility that the bag body may move backward due to the pulling force. That is, the bag body may be displaced rearward. If it does so, there exists a possibility of having a bad influence on the various processes which should be performed with respect to the said bag body after this.
Here, according to the above configuration, the pressing member is pressed in the backward movement operation, thereby restricting the movement of the bag body. Therefore, the rearward displacement of the bag that may occur during the backward movement is reliably prevented, and as a result, various processes to be performed on the bag can be accurately performed thereafter.

Such a packaging device,
The sealing mechanism has a pair of clamping members provided so as to be able to sandwich the mouth from both sides of the second intersecting direction intersecting both the intersecting direction and the pushing direction,
The pinching member seals the mouth portion by joining the mouth portion with an inner peripheral surface while the mouth portion is pinched.
It is desirable that the pressing state of the pressing member is switched to the non-pressing state after the pressing member is in a state of pressing the mouth.

  According to such a packaging apparatus, the pressing state of the pressing member to the bag body is maintained at least until the pressing member presses the mouth of the bag body. And here, if it is in the pressed state, the recovery phenomenon to the bulky state of the sheet-like product group in the bag body, that is, the expansion phenomenon that can occur when the sheet-like product group is inserted into the bag body in a compressed state. As a result, it is possible to effectively suppress the opening of the mouth that may occur with the expansion phenomenon. Therefore, the pinching member of the sealing mechanism can perform the sealing process of the mouth more stably.

Such a packaging device,
The thickness direction of the sheet-like product faces a second intersecting direction intersecting both the intersecting direction and the pushing direction,
The pusher has a pusher body whose front end surface abuts on the sheet-like product group when pushed in, and a flange projecting forward from one end of the front end surface in the thickness direction,
Next, in order to interpose the sheet-like product group to be pushed in at a predetermined position between the front end surface of the pusher and the bag body, the sheet-like product group is arranged from the other side along the second crossing direction. A transport mechanism for transporting toward the one side;
In the process of transporting the sheet-like product group to the predetermined position, the transport mechanism compresses the sheet-like product group in the second intersecting direction in cooperation with the collar portion, and in the second intersecting direction. It is desirable to push the sheet product group into the bag by the pusher while maintaining the sheet product group in a compressed state.

  According to such a packaging device, the pusher compresses the sheet-like product group in cooperation with the transport mechanism, and pushes it into the bag while maintaining this compressed state. Therefore, the sheet-like product group can be reliably pushed to the back of the bag body, that is, to a position closer to the bottom. As a result, the sheet-like product group can be positioned at a position relatively distant from the mouth portion, so that the opening action of the mouth that the sheet-like product group can exert on the mouth portion can be effectively reduced. As a result, wrinkles that can occur when sealing the mouth can be suppressed.

Such a packaging device,
The bag body is formed using one or a plurality of sheet materials as a material,
In the sheet material, it is desirable that the surface corresponding to the inner peripheral surface of the bag body and the surfaces facing each other are joined at the end portions in the intersecting direction so that the flange portion is formed. .

  According to such a packaging apparatus, with respect to the position in the thickness direction, both the position of the collar portion and the intermediate position between the surfaces corresponding to the inner peripheral surface of the mouth portion and facing each other Are almost identical. Therefore, by pulling the collar in the intersecting direction, the opening between the surfaces facing each other is quickly closed. Therefore, wrinkles that can occur when the mouth is sealed can be suppressed.

Such a packaging device,
The folded portion of the one sheet material forms the bottom of the bag,
The folded portion is preferably folded in an M shape so that the bottom portion can be developed in the thickness direction.

  According to such a packaging apparatus, even if the form of the bag body is a so-called standing pouch form in which the bottom part can be in an upright state with the ground part as the ground contact surface, it can occur when the mouth part is sealed. Can be suppressed.

Such a packaging device,
The sealing mechanism has a pair of clamping members capable of clamping the mouth from both sides of the second intersecting direction intersecting both the intersecting direction and the pushing direction,
The pinching member seals the mouth portion by joining the mouth portion with an inner peripheral surface while the mouth portion is pinched.
It is desirable that the pinching member be disposed at a position farther from the sheet-like product group in the bag body than the grip portion of the closing mechanism with respect to the pushing direction.

  According to such a packaging apparatus, the arrangement position of the pinching member in the pushing direction is a position farther from the sheet-like product group in the bag than the arrangement position of the gripping portion of the closing mechanism. Therefore, the pinching member can pinch and join the portion of the mouth where the gripping portion is sufficiently flattened. As a result, wrinkles that can occur when the mouth is sealed can be effectively prevented.

Also,
A package in which a plurality of sheet-like products are stacked in the thickness direction of the sheet-like product and a sheet-like product group is inserted into the packaging bag body from the mouth portion of the packaging bag body to seal the mouth portion. A method,
Inserting the sheet-like product group into the bag body by pushing in while sliding the sheet-like product group from the mouth of the packaging bag toward the bottom of the bag;
Closing the mouth part by pulling the mouth part of the packaging bag body in a state where the sheet-like product group is inserted to both sides in the crossing direction intersecting the pushing direction of the pushing mechanism;
Sealing the mouth in a state of being pulled on both sides in the crossing direction, and a method of packaging a sheet-like product group formed by stacking a plurality of sheet-like products.

  According to such a packaging method, the mouth portion is closed while partially loosening the mouth portion by pulling the mouth portion of the packaging bag body in a state where the sheet-like product group is inserted. Thus, the mouth portion is almost flattened, but the sealing mechanism seals the mouth portion in this state. Therefore, wrinkles that can occur when the mouth is sealed can be suppressed.

=== This Embodiment ===
FIG. 2 is a schematic perspective view of a packaging bag 5 in which a plurality of sheet-like products 1, 1... Are accommodated. FIG. 3 is a schematic perspective view of an example of the sheet-like product 1. 4A is a schematic plan view of the packaging bag body 5, FIG. 4B is a view taken along the line BB in FIG. 4A, and FIG. 4C is a view taken along the line CC in FIG. 4A. FIG. 4D is a schematic plan view showing a state before the film 5 s of the material of the packaging bag 5 becomes the bag 5. 4A to 4C show the bag body 5 in which the mouth portion 5k is not sealed.

As shown in FIG. 2, a sheet formed by stacking a plurality (four in the example of FIG. 2) of sheet-like products 1, 1,... The product 5G is housed in the state of the product group 1G, and the mouth 5k of the bag body 5 is sealed in this housed state.
The sheet-like product 1 is, for example, a cleaning sheet 1. As shown in FIG. 3, the cleaning sheet 1 includes, for example, a non-woven fabric base sheet 2a, a non-woven fabric auxiliary sheet 2b provided to cover the top surface of the base sheet 2a, and the bottom surface of the base sheet 2a. The fiber bundle 3 of tow fibers provided to cover and form the main brush portion, and the non-woven fabric strip sheet (not shown) provided on the lower surface of the fiber bundle 3 to form the auxiliary brush portion are thickened in this order. It is the sheet-like laminated body 1 stacked in the vertical direction. And in the insertion holes 2h, 2h defined between the auxiliary sheet 2b and the base sheet 2a, a part of the handle member 4 which becomes a handle at the time of cleaning is inserted and fixed, and thereby the table can be cleaned. Become. Incidentally, in such a cleaning sheet 1, the fiber bundle 3 of tow fibers occupies most of the thickness direction, so that it is very bulky in the thickness direction.

  On the other hand, as shown in FIGS. 4A and 4B, the packaging bag 5 has a bottom 5b at one end in the longitudinal direction of the bag 5 and a mouth 5k at the other end. It is formed from one flexible thermoplastic resin film 5s (corresponding to a sheet material). The planar shape of the film 5s before becoming the bag 5 is, for example, a substantially rectangular shape having a longitudinal direction, a width direction, and a thickness direction as shown in FIG. 4D. Then, the film 5s is folded in a folded state at a portion 5b corresponding to the bottom portion 5b of the bag body 5. At this time, as shown in FIG. 4C, the sectional shape of the folded portion 5b is M. The film 5s is folded in a folded shape, that is, the film 5s is folded in two via the M-shaped folded portion 5b. Then, the surfaces 5ss and 5ss of the film 5s facing each other in the two-folded state are welded and bonded over the entire length in the longitudinal direction at both ends 5ew and 5ew in the width direction of the film 5s as shown in FIG. 4A. Thus, the bag body 5 is generated in which each of the surfaces 5ss and 5ss is an inner peripheral surface, the folded portion 5b is a bottom portion 5b, and an end opposite to the bottom portion 5b is a mouth portion 5k.

  If the M-shaped folded portion 5b of the bottom portion 5b is developed and expanded after the bag body 5 is formed as described above, a substantially planar bottom surface is formed on the bottom portion 5b. Thus, the bag body 5 can be erected with the bottom surface as a grounding surface.

  Further, as can be seen from the method for producing the bag body 5 described above, among the films 5s, the surfaces 5ss and 5ss corresponding to the inner peripheral surface of the bag body 5 and the surfaces 5ss and 5ss facing each other are formed on the film 5s. Since the both ends 5ew and 5ew in the width direction are welded and joined, the joints 5j and 5j formed at the both ends 5ew and 5ew by the welding and joining are separated from the end of the bag body 5 in the width direction. The flanges 5j and 5j protrude in the direction. That is, the bag body 5 has flange portions 5j and 5j at both end portions 5ew and 5ew in the width direction, and the flange portions 5j and 5j are formed over the entire length in the longitudinal direction.

  If the flange portions 5j and 5j are formed in this way, the position of the flange portion 5j and the surfaces 5ss and 5ss corresponding to the inner peripheral surface of the mouth portion 5k are opposed to each other with respect to the position in the thickness direction. Since the two surfaces 5ss and the intermediate position Pm between the five ss substantially coincide with each other (see FIGS. 4B and 4C), the flanges 5j and 5j are opposed to each other by pulling the flanges 5j and 5j to both sides in the width direction. The opening between the surfaces 5ss, 5ss closes quickly. Therefore, in the packaging device 10 described later, immediately before the sealing process of the mouth portion 5k, the mouth portions 5k are closed by pulling the flange portions 5j and 5j to both sides in the width direction.

  Incidentally, the thickness direction, the width direction, and the longitudinal direction of the flange 5j are respectively parallel to the thickness direction, the width direction, and the longitudinal direction of the film 5s, and more specifically, the thickness direction of the bag body 5, The width direction and the longitudinal direction are also parallel. Therefore, in the following, the thickness direction, the width direction, and the longitudinal direction relating to each of the film 5s, the bag body 5, and the flange portion 5j are simply referred to as “thickness direction” and “width direction” without distinguishing from each other. ”And“ longitudinal direction ”. Further, regarding the size relationship between these three dimensions, the dimension in the width direction is larger than the dimension in the thickness direction, and the dimension in the longitudinal direction is larger than the dimension in the width direction.

  As shown in FIG. 2, the plurality of cleaning sheets 1, 1,... Described above are inserted into the packaging bag body 5 having the above structure from the mouth portion 5k toward the bottom portion 5b. However, at this time, the plurality of cleaning sheets 1, 1... Are accommodated in a cleaning sheet group 1G (corresponding to a sheet-like product group) stacked in the thickness direction of the sheet 1. In addition, the thickness direction, the width direction, and the longitudinal direction of the cleaning sheet 1 are accommodated in parallel with the thickness direction, the width direction, and the longitudinal direction of the bag body 5, respectively. And in such an accommodation state, the mouth portion 5k of the bag body 5 is welded and joined to the inner peripheral surface of the mouth portion 5k in a state of being closed substantially flat, whereby the mouth portion 5k is sealed. The cleaning sheet group 1G is packaged in the packaging bag 5.

By the way, the process of packaging the cleaning sheet group 1G as described above, that is, the process of inserting the cleaning sheet group 1G into the packaging bag 5 and sealing the mouth portion 5k is performed by the packaging device 10. .
5 and 6 are schematic side views showing the overall configuration of the packaging device 10. 7A to 10D are explanatory diagrams of the packaging procedure of the apparatus 10. Each of FIGS. 7A to 10D has a left view and a right view. Here, the left view shows a schematic side view, and the right view shows the left view. The inside LL arrow line view is shown. Moreover, while showing the bag body 5 with the dashed-two dotted line over the whole figure of FIG. 7A thru | or FIG. 10D, the same bag body 5 is shown through.

  As shown in FIG. 5, the packaging device 10 receives the bag body 5 supplied from the production line L5 of the packaging bag body 5 and transports the bag body 5 to a predetermined bag body insertion standby position PW5; Cleaning sheet group transport mechanism 30 (corresponding to the transport mechanism) that transports the cleaning sheet group 1G to the sheet group insertion standby position PW1G facing the opening 5k of the bag body 5 transported to the bag body insertion standby position PW5. The cleaning sheet group 1G conveyed to the sheet group insertion standby position PW1G is slid along the pushing direction from the mouth portion 5k of the bag body 5 at the bag body insertion standby position PW5 toward the bottom portion 5b. A push-in mechanism 40 that moves the bag body 5 together with the cleaning sheet group 1G while pushing it in to the back side in the push-in direction from the bag body insertion standby position PW5, and moves to the back side position. A mouth closing mechanism (corresponding to a closing mechanism) 50 that closes the opened mouth 5k of the bag body 5; a sealing mechanism 60 that seals the mouth 5k closed by the mouth closing mechanism 50; A discharge mechanism 70 for discharging the bag body 5 in which the portion 5k is sealed to a lower process by conveying the bag body 5 further in the pushing direction.

  Hereinafter, although each structure 20, 30, 40, 50, 60, 70 is explained in detail, in the following explanation, three directions orthogonal to each other are defined as a vertical direction, a front-rear direction, and a left-right direction. In this example, the up-down direction is directed to the vertical direction, the front-rear direction and the left-right direction are each directed to the horizontal direction, and the left-right direction is directed to the direction penetrating the paper surface of FIG. . However, the present invention is not limited to this, and these three directions may be inclined from the vertical direction or the horizontal direction. Further, in this example, for the sake of explanation, the above-described pushing direction is parallel to the front-rear direction, the rear side in the pushing direction is the front side in the front-rear direction, and the front side in the pushing direction is the rear side in the front-rear direction. However, it is not limited to this. For example, the pushing direction may be the vertical direction or the horizontal direction. Incidentally, this pushing direction corresponds to the “pushing direction” recited in the claims, and accordingly, the left-right direction corresponds to the “crossing direction” recited in the claims, and the up-down direction corresponds to the claims. This corresponds to the “second crossing direction” described in FIG.

<<< Bag body transport mechanism 20 >>>
As shown in FIG. 5, the bag transport mechanism 20 has a disk member 22 that rotates about a predetermined rotation axis C <b> 22 along the front-rear direction as a main body, and the disk surface on the rear side of the disk member 22 is rotated. A plurality of buckets 24, 24... Are provided at equal pitches in the circumferential direction along a circumferential line concentric with the axis C22.

  Each bucket 24 is an appropriate outer member 24, and can be covered with the bag body 5 on the outer peripheral surface thereof, and can be a space through which the cleaning sheet group 1G passes along the front-rear direction (hereinafter also referred to as a passage space). Member). In this example, since the shape of the cleaning sheet group 1G in the cross section having the normal direction as the front-rear direction is a substantially rectangular shape, the cross-sectional shape of the passage space inside the outer member 24 is also a rectangular shape. However, the outer cross-sectional shape of the outer member 24 is also rectangular. Specifically, as shown in the schematic perspective view of FIG. 11, the bucket 24 includes a pair of U-shaped cross-section members (a cross-section U-shaped member in Japanese katakana notation) They are arranged in the left-right direction while facing each other. Further, in each part of the disk member 22 where each bucket 24 is provided, a substantially identical through-hole (not shown) is provided along the front-rear direction in correspondence with the passage space inside the bucket 24 having a rectangular shape. Is formed.

  5 is intermittently rotated around the rotation axis C22 by an appropriate drive source such as a servomotor. Here, on the above circumferential line, from the production line L5 of the packaging bag body 5 Both the bag body receiving position PR5 for receiving the bag body 5 sent intermittently and the above-described bag body insertion standby position PW5 are set. While the bucket 24 is parked at the bag body receiving position PR5, the bag body 5 is sent from the production line L5 of the bag body 5 with the mouth portion 5k facing forward, and the bucket 24 being parked. Is covered from behind. On the other hand, while the bucket 24 covered with the bag body 5 reaches the bag body insertion standby position PW5 by the intermittent rotation of the disk member 22 and stops, the above-described pushing mechanism 40 causes the cleaning sheet group 1G. Is pushed into the bucket 24 from behind, and the bag body 5 at the bag body insertion standby position PW5 is pushed forward together with the cleaning sheet group 1G by further pushing, whereby the bag body 5 is pushed into the bucket 24. It will be in the state where it was removed from. The bag body 5 detached from the bucket 24 is sealed at the opening 5k by the sealing mechanism 60 and the like, which will be described later.

  As described above, the cross-sectional shape of the outer shape of each bucket 24 is a rectangle. However, as shown in FIG. 11, the dimensions of the short side LS and the long side LL of the rectangular cross-sectional shape are respectively set inside. It is set corresponding to the dimension in the thickness direction and the dimension in the width direction of the bag body 5 in a state where the cleaning sheet group 1G is inserted. At the bag receiving position PR5, both the long side LL of the cross-sectional shape of the bucket 24 and the width direction of the bag 5 are parallel to each other, and the short side LS of the cross-sectional shape and the thickness direction of the bag 5 are The bag body 5 is placed on the bucket 24 so that they are parallel to each other. Further, at the bag body insertion standby position PW5, the long side LL of the cross-sectional shape of the bucket 24 faces the left-right direction, and the short side LS of the cross-sectional shape faces the up-down direction. At the insertion standby position PW5, the width direction of the bag body 5 faces the left-right direction, and the thickness direction of the bag body 5 faces the up-down direction. At the cleaning sheet group standby position PW1G facing the bag body insertion standby position PW5, as will be described later, the cleaning sheet group 1G has the thickness direction directed in the vertical direction and the width direction directed in the horizontal direction. And is waiting in a posture in which the longitudinal direction is directed in the front-rear direction. Therefore, when the cleaning sheet group 1G is inserted into the bag body 5, the respective thickness direction, width direction, and longitudinal direction are aligned between the bag body 5 and the cleaning sheet group 1G. It will be in the state.

<<< Cleaning Sheet Group Conveyance Mechanism 30 >>>
As shown in FIG. 5, the cleaning sheet group transport mechanism 30 includes a lift member 32 that moves up and down. The lower limit position P32L of the lifting path of the lift member 32 functions as a cleaning sheet group receiving position PR1 that receives the cleaning sheet group 1G that is intermittently conveyed from the production line L1 of the cleaning sheet 1. The upper limit position P32U of the lifting path functions as the above-described sheet group insertion standby position PW1G. That is, the upper limit position PW1G functions as a standby position where the cleaning sheet group 1G waits for the pushing mechanism 40 to push the cleaning sheet group 1G placed on the lift member 32 into the bag body 5 of the bucket 24. .

  Then, at the cleaning sheet group receiving position PR1, the horizontal upper surface of the lift member 32 is set as a mounting surface, the cleaning sheet group 1G is directed in the thickness direction in the vertical direction, and the width direction is directed in the horizontal direction. In addition, the cleaning sheet group 1G is sent to the upper sheet group insertion standby position PW1G in the upper position with the longitudinal direction oriented in the front-rear direction.

  Incidentally, the lifting / lowering operation of the lift member 32 is performed by an appropriate drive source (not shown) such as a hydraulic cylinder, an air cylinder, or a servo motor.

<<< push-in mechanism 40 >>>
As shown in FIG. 5, the push-in mechanism 40 is disposed behind the sheet group insertion standby position PW1G, and has a pusher 41 that reciprocates along the front-rear direction that is the push-in direction. In the state where the pusher 41 is located at the backward limit P41B as shown in FIG. 5, a space corresponding to one of the cleaning sheet group 1G is formed in front of the pusher 41. Therefore, the position of this space is set to the above-described sheet group insertion standby position PW1G, and the above-described lift member 32 is raised, whereby the cleaning sheet group 1G is disposed at the sheet group insertion standby position PW1G.

On the other hand, as shown in FIG. 6, the forward limit P41F of the pusher 41 is set further forward than the above-described bag body insertion standby position PW5. Therefore, as shown in FIGS. 5 and 6, in the process of the pusher 41 moving forward to the forward limit P41F, first, the pusher 41 is indirectly pushed into the bag body by pushing into the bucket 24 while sliding the cleaning sheet group 1G. The cleaning sheet group 1G is pushed into the sheet 5, but by further pushing forward, the cleaning sheet group 1G is brought into contact with the bottom part 5b of the bag body 5 together with the cleaning sheet group 1G. Pushing forward, the bag body 5 is removed from the bucket 24 forward. Finally, the pusher 41 further pushes the bag body 5 containing the cleaning sheet group 1G to the positions of the front mouth closing mechanism 50 and the sealing mechanism 60. With the above, the pusher 41 reaches the forward limit P41F. (FIG. 6).
The pusher 41 that has reached the forward limit P41F returns to the backward limit P41B in FIG. 5 by performing the backward movement while leaving the cleaning sheet group 1G in the bag 5. Then, it waits until the next cleaning sheet group 1G is conveyed to the sheet group insertion standby position PW1G.

  As shown in FIG. 5, the pusher 41 has, for example, a head portion 41h (corresponding to a pusher main body) and a rod portion 41r provided integrally with a rear end portion of the bed portion 41h. The rod 41r is given a driving force related to the forward movement and the backward movement from an appropriate driving source (not shown) such as a servo motor, a hydraulic cylinder, an air cylinder, etc. Move backwards.

  In this example, the front end surface 41ha of the head portion 41h is formed as a vertical surface. Therefore, when the front end surface 41ha comes into contact with the cleaning sheet group 1G from the rear, the cleaning sheet group 1G can be smoothly pushed forward.

  Furthermore, the head portion 41h has a plate-like flange portion 41hc projecting forward from the upper end edge portion of the front end surface 41ha thereof. When the pusher 41 is positioned at the backward limit P41B, the flange 41hc is positioned immediately above the lifting path of the lift member 32 as shown in FIG. Therefore, when the cleaning sheet group 1G on the lift member 32 is moved to the sheet group insertion standby position PW1G by the lifting operation of the lift member 32, cleaning is performed by the flange 41hc and the lift member 32 at the final stage of the movement. The sheet group 1G is compressed. This will be described later.

  Incidentally, as can be seen from the above, in the forward movement, the flange 41hc of the pusher 41 is located immediately above the cleaning sheet group 1G. Therefore, when the pusher 41 pushes the cleaning sheet group 1G into the bag body 5 as shown in FIGS. 8A and 8B, at least the flange 41 hc is also inserted into the bag body 5. That is, the pusher 41 pushes the sheet-shaped product group 1G into the bag body 5 by moving forward while inserting a part of the pusher 41 into the bag body 5. In addition, in this example, all of the head portion 41 is also inserted into the bag body 5, but a part of the head portion 41 may be inserted. .

<<< Mouth closing mechanism 50 >>>
As shown in the left and right views of FIG. 9A, the mouth closing mechanism 50 has a pair of left and right grips 52, 52 disposed at a position ahead of the bucket 24 of the disk member 22. Then, when the pusher 41 moves backward from the forward limit P41F, after the pusher 41 including the collar portion 41h comes out of the bag body 5 remaining in the forward limit P41F, the gripping parts 52, 52 However, the mouth part 5k of the bag body 5 is pulled to both sides in the left-right direction, thereby closing the mouth part 5k so that it is crushed substantially flat.
Specifically, as shown in the left diagram of FIG. 9A, the gripping portions 52 and 52 selectively grip the portions 5jk and 5jk located in the vicinity of the mouth portion 5k among the flange portions 5j and 5j of the bag body 5. In this gripping state, the gripping parts 52, 52 move to the outside in the left-right direction as shown in the right diagrams of FIGS. 10A and 10B. For example, the left grip 52 moves to the left, and the right grip 52 moves to the right. Thus, the mouth portion 5k is pulled to both sides in the width direction which is the left-right direction.

In this example, such a movement operation and gripping operation of the gripping parts 52, 52 in the left-right direction are realized as follows.
First, the gripping parts 52 and 52 are guided by an appropriate guide member (not shown) such as a linear guide so as to be reciprocally movable in the left-right direction, and are appropriately controlled by a servo motor, a hydraulic cylinder, an air cylinder or the like. It is reciprocated by a drive source (not shown). Here, the left and right grips 52, 52 are controlled by an appropriate control unit (not shown) so as to reciprocate in the left-right direction in conjunction with each other. That is, as shown in the right diagrams of FIGS. 9A to 10B, the reciprocal movement paths of the left and right grips 52, 52 are set adjacent to the flanges 5j, 5j of the bag body 5, respectively. The approach positions P52N and P52N and the distant positions P52A and P52A set at positions farther from the bag body 5 in the left-right direction than the approach positions P52N and P52N are set. When moving to P52N, the other gripper 52 also moves to the approach position P52N on its own reciprocating path (FIGS. 8A and 8B), and when one gripper 52 moves to the far position P52A. The other grip 52 is also moved to a distant position P52A on its own reciprocating path (FIGS. 9A to 10B).

  Further, as shown in FIG. 8C, the grip portion 52 has a pair of upper and lower grip claws 54u and 54d provided at positions where the flange portion 5j of the bag body 5 can be sandwiched from both sides in the vertical direction. Then, the pair of gripping claws 54u and 54d slide in the vertical direction in conjunction with each other, thereby opening and closing, and in a closed state, the gripping state is obtained by gripping the collar part 5j. It becomes a non-gripping state where it is not gripped. For example, as shown in FIGS. 8C and 9A, when both of the pair of gripping claws 54u and 54d slide so as to approach the flange 5j, the pair of gripping claws 54u and 54d are in a closed state. Thereby, the said hook part 5j can be hold | gripped through contact | abutting to each surface of the hook part 5j of each holding claw 54u and 54d. Further, as shown in FIGS. 10C and 10D, when both of the pair of gripping claws 54u and 54d in the closed state slide and move away from the flange 5j, the pair of gripping claws 54u and 54d are in the open state. Thus, it is possible to make the gripping portion 5j not gripped through the separation of the gripping claws 54u and 54d from each surface of the flange portion 5j.

  In this example, as shown in the right diagram of FIG. 8B, the bag body 5 is placed at an intermediate position Pm54 between the upper gripping claw 54u and the lower gripping claw 54d in the open state with respect to the vertical position. The pair of upper and lower gripping claws 54u and 54d are arranged so that the portion 5j is positioned, and the vertical movement speed values of the gripping claws 54u and 54d are set to be equal to each other. Therefore, the upper gripping claw 54u and the lower gripping claw 54d perform a so-called reverse operation with respect to each other in the vertical direction, thereby gripping the collar part 5j without substantially moving the position of the collar part 5j in the vertical direction. (Fig. 9A). Since the left and right grips 52 and 52 move linearly along the corresponding directions in the left and right direction from such a grip state, the left and right flanges 5j and 5j are respectively positioned in the vertical direction. It is pulled to the left side or the right side while being kept substantially stationary (FIGS. 10A and 10B). Therefore, the pulling force acts stably on the center position in the vertical direction of the mouth portion 5k, and as a result, the mouth portion 5k is quickly closed while partially loosening the mouth portion 5k. The mouth portion 5k is almost flattened (FIG. 10B).

  Such vertical movement of the pair of upper and lower gripping claws 54u and 54d is preferably generated from one drive source from the viewpoint of accurately synchronizing the both, and in this example, the drive that can be used as such The mechanism is used. FIG. 12 is a schematic view showing an example of this drive mechanism with a part broken away. The drive mechanism includes linear guides 54gu and 54gd that guide a pair of upper and lower gripping claws 54u and 54d so as to be independently reciprocable in the vertical direction, and an air cylinder 54ac as a drive source that generates a reciprocating motion in a predetermined direction. And a pair of link mechanisms 54Lu and 54Ld as an operation conversion mechanism for converting the above reciprocating movement operation into a vertical movement operation and transmitting it to the gripping claws 54u and 54d.

  More specifically, the air cylinder 54ac has, for example, a piston 54acp that reciprocates in the left-right direction by air supply / discharge operation, and the input ends of the pair of link mechanisms 54Lu and 54Ld are connected to the piston 54acp. ing. Here, the output end of one link mechanism 54Lu of the pair of link mechanisms 54Lu and 54Ld is connected to the upper gripping claw 54u, while the output end of the other link mechanism 54Ld is the lower gripping mechanism. It is connected to the claw 54d. Therefore, based on the reciprocating movement of the single piston 54acp in the left-right direction, the pair of upper and lower gripping claws 54u, 54d move in the up-down direction.

  By the way, in the example of FIG. 12, the portions 54ue and 54ud on the front end side of the gripping claws 54u and 54d have a gentle curve shape such that they move away from the flange 5j in the vertical direction as they approach the bag body 5 in the left-right direction. Accordingly, the gripping claws 54u and 54d are basically designed so as to grip the collar portion 5j by the base side portions 54ub and 54db. And since it has such a gentle curve shape, even when the bag body 5 is likely to be displaced in the left-right direction as a whole in the process of gripping the collar 5j as shown in FIGS. 8C and 9A, the gripping claws The loosely curved portions 54ue and 54ud which are the portions 54ue and 54ud on the front end side of 54u and 54d come into contact with the bag body 5, so that the bag body 5 can be moved in the left-right direction without substantially damaging the bag body 5. It can be regulated reliably. As a result, the sealing process performed by the sealing mechanism 60 can be performed accurately without any positional deviation.

<<< sealing mechanism 60 >>>
The sealing mechanism 60 is, for example, a heat seal device 60. As shown in FIG. 5, the heat seal device 60 has a pair of upper and lower seal plates 61 u and 61 d (corresponding to a pressing member) disposed at a position where the mouth portion 5 k can be sandwiched from above and below. Each of the seal plates 61u and 61d is guided by an appropriate guide member (not shown) such as a linear guide so as to be able to reciprocate in the vertical direction. It is reciprocated by a drive source (not shown).

  Here, the lower surface 61ua, which is the pressing surface of the upper seal plate 61u, and the upper surface 61da, which is the pressing surface of the lower seal plate 61d, are formed substantially parallel to the horizontal plane defined in both the left-right direction and the front-rear direction, respectively. As shown in FIG. 10B, in the state where the mouth 5k is pulled to both sides in the left-right direction by the mouth closing mechanism 50 described above and the mouth 5k becomes substantially flat, as shown in FIG. By moving the seal plate 61u and the lower seal plate 61d so as to approach each other, the substantially flat mouth portion 5k is pinched between the lower surface 61ua of the upper seal plate 61u and the upper surface 61da of the lower seal plate 61d. And it heats in the said clamping pressure state, and, thereby, the opening part 5k is welded and joined by an inner peripheral surface, and is sealed.

  In this example, as shown in FIG. 10C, the sealing plates 61 u and 61 d of the sealing mechanism 60 are more in the bag body 5 than the gripping parts 52 and 52 of the mouth closing mechanism 50 with respect to the position in the front-rear direction. It is arrange | positioned in the position away from 1 G of sheet | seats for cleaning of this, ie, the back position. And if it arrange | positions in this way, the sealing plates 61u and 61d can pinch and join the part which the holding parts 52 and 52 fully planarized among the opening parts 5k. Therefore, wrinkles that can occur when the mouth 5k is sealed can be more effectively prevented. However, the arrangement relationship is not limited to this, and in some cases, the positional relationship in the front-rear direction may be reversed as described above.

  Further, the sealing mechanism 60 is not limited to the above-described heat sealing apparatus 60. For example, in the above-described sealing mechanism 60, the sealing plates 61u and 61d may perform only the pinching pressure without heating the mouth portion 5k, thereby crimping the mouth portion 5k on the inner peripheral surface. Further, prior to this pressure bonding, a hot melt adhesive may be applied to the inner peripheral surface.

<<< Discharge Mechanism 70 >>>
As shown in FIG. 6, the discharge mechanism 70 is, for example, a belt conveyor 70. The arrangement position of the belt conveyor 70 is set to a position immediately below the bag body 5 containing the cleaning sheet group 1G pushed to the forward limit P41F by the pusher 41. Therefore, the bag body 5 containing the cleaning sheet group 1G pushed to the same position is placed on the upper surface of the endless belt 72 of the belt conveyor 70, and thus placed on the endless belt 72. In this state, the mouth 5k is closed by the mouth closing mechanism 50 described above, and the mouth 5k is sealed by the sealing mechanism 60 described above (FIG. 10C). When the sealing process of the mouth portion 5k by the sealing mechanism 60 is finished, the endless belt 72 of the belt conveyor 70 is driven and rotated to convey the bag body 5 with the mouth portion 5k sealed forward, Thus, the bag body 5 is discharged to the lower process (FIG. 10D).

<<< Packing Procedure of Packaging Device 10 >>>
As shown in FIGS. 7A and 7B, the cleaning sheet group 1G is first conveyed from the production line L1 of the cleaning sheet 1 toward the lift member 32 located at the lower limit position P32L. At this time, each of the cleaning sheets 1, 1... Of the cleaning sheet group 1 </ b> G is lifted in a posture in which the thickness direction is directed in the vertical direction, the width direction is directed in the left-right direction, and the longitudinal direction is directed in the front-rear direction. 32 reaches the lower limit position P32L, and is placed on the lift member 32 at the same position P32L.

  In this example, the belt conveyor CVL1 of the production line L1 for the cleaning sheet 1 is disposed adjacent to the rear of the lift member 32 at the lower limit position P32L, and the cleaning sheet group 1G on the belt conveyor CVL1 is disposed. However, the supply mechanism of the cleaning sheet group 1G to the lift member 32 is not limited to this.

  Next, as shown in FIG. 7C, the lift member 32 is moved up to the upper limit position P32U, whereby the cleaning sheet group 1G is sent to the sheet group insertion standby position PW1G. In the final stage of the ascending process, as described above, the cleaning sheet group 1G is compressed in the thickness direction by both the flange portion 41hc of the pusher 41 and the lift member 32, thereby the cleaning sheet group. The bulk of 1G is reduced.

  On the other hand, the disk member 22 rotates intermittently in parallel with or before or after the lifting operation of the lift member 32, so that the bucket 24 covered with the bag 5 is moved from the bag receiving position PR5 to FIG. It is moved to the bag body insertion standby position PW5 of FIG. 7B. As shown in FIGS. 7C to 8B, the pusher 41 advances toward the bucket 24 to the forward limit P41F. In this forward movement, the cleaning sheet group 1G is placed on the bottom 5b of the bag body 5. The bag body 5 is pushed forward as it is brought into contact, and thereby the bag body 5 is detached from the bucket 24 as shown in FIG. 8B, and the pusher such as the cleaning sheet group 1G and the collar 41hc is placed in the bag body 5. A part of 41 is inserted. Further, when the pusher 41 has reached the forward limit P41F, the bag body 5 has been moved to the positions where the mouth closing mechanism 50, the sealing mechanism 60, and the discharge mechanism 70 are arranged.

  8A and 8B, the compressed state of the cleaning sheet group 1G is maintained by the flange 41hc of the pusher 41. Accordingly, the cleaning sheet group 1 </ b> G can be inserted as far as the back of the bag body 5, that is, to a position closer to the bottom portion 5 b of the bag body 5 because the bulk is small. Thus, the cleaning sheet group 1G can be positioned at a further forward position away from the mouth part 5k, and as a result, the opening action of the mouth part 5k that the cleaning sheet group 1G can exert on the mouth part 5k. It can be effectively reduced. Therefore, it becomes easy to perform the process of closing the mouth portion 5k thereafter.

  Next, as shown in FIGS. 8C to 9B, while the cleaning sheet group 1G remains in the bag body 5, the pusher 41 performs the backward movement to the backward limit P41B ("the position before performing the forward movement"). Return to equivalent). Here, at the same time or in parallel with the backward movement, as shown in the right diagrams of FIGS. 8B and 8C, the left and right gripping portions 52, 52 positioned at the above-mentioned remote positions P52A, P52A in the opened state. However, it moves along the left-right direction so as to approach the bag body 5 and stops when the gripping parts 52, 52 reach the corresponding approach positions P52N, P52N, respectively. 9A and 9B, the gripping portions 52 and 52 close the gripping claws 54u and 54d in the open state at the approach positions P52N and P52N, respectively, and thereby the gripping portions 52 and 52 are closed. Holds the corresponding flanges 5j and 5j.

Then, as shown in FIG. 10A and FIG. 10B, the left and right grips 52, 52 move to the distant positions P52A, P52A along the left-right direction so as to move away from the bag body 5, respectively, thereby Pull the 5 mouth portion 5k to both sides in the left-right direction. Then, in this pulling process, the mouth portion 5k is quickly closed while the mouth portion 5k is partially loosened, whereby the mouth portion 5k is almost flattened (FIG. 10B).
Note that the movement operation of the gripping portions 52, 52 to the distant positions P52A, P52A is as follows. As shown in the left diagrams of FIGS. If the pusher 41 has already been pulled out, the process is performed immediately. On the other hand, if a part of the pusher 41 has not been pulled out from the bag 5 as shown in the left diagram of FIG. Waiting for everything to be pulled out. As a result, the trouble that the mouth portion 5k is closed while a part of the pusher 41 is in the bag body 5 is avoided.

  Next, as illustrated in FIGS. 10B and 10C, the sealing mechanism 60 performs a heat sealing process on the mouth portion 5 k that is pulled by the grip portions 52 and 52. That is, the upper seal plate 61u and the lower seal plate 61d are moved along the vertical direction from both sides in the vertical direction so as to approach the mouth portion 5k, whereby the mouth portion 5k is connected to the upper seal plate 61u and the lower seal plate. It is pinched by both of 61d. Then, the mouth portion 5k is heated by the seal plates 61u and 61d in this pinched state, and thereby the mouth portion 5k is welded and sealed on the inner peripheral surface.

  Then, as shown in FIG. 10D, the upper seal plate 61u and the lower seal plate 61d are moved along the vertical direction so as to be separated from the mouth portion 5k, respectively, and thereby the upper seal plate 61u and the lower seal plate are moved from the mouth portion 5k. The plate 61d is retracted. In addition, about the holding parts 52 and 52 here, as shown to FIG. 10C and FIG. 10D, the opening part 5k is pinched by the upper and lower seal plates 61u and 61d, and it is made into an open state at arbitrary timings after that. Thus, after being brought into the non-gripping state and further being brought into the non-gripping state, the respective gripping portions 52, 52 stand by at the far position P52A.

  And finally, as shown to FIG. 10D, the belt conveyor 70 which is the discharge mechanism 70 act | operates, and the bag body 5 is conveyed ahead, and, thereby, the bag body 5 is discharged | emitted to a lower process. Then, after the discharging, the belt conveyor 70 stops the conveyance, and this stopped state is maintained until the next discharging operation.

  By the way, during the backward movement of the pusher 41 shown in FIG. 8C, a part of the pusher 41 such as the flange 41 hc inserted into the bag body 5 is pulled out of the bag body 5. In addition, there is a possibility that a pulling force acts backward, and the bag 5 moves backward due to the pulling force. That is, the bag body 5 may be displaced rearward. Then, there is a possibility that the sealing position formed in the mouth portion 5k by the sealing mechanism 60 after this will shift in the front-rear direction from the target position.

  Therefore, desirably, in the backward movement of the pusher 41, the movement of the bag body 5 is regulated by the gripping portions 52 and 52 gripping the flange portions 5j and 5j as shown in the right diagram of FIG. 9A. good. For example, it is preferable that the gripping portions 52 and 52 hold the flange portions 5j and 5j over at least the entire period from the start time of the backward movement to the time when the entire pusher 41 is pulled out from the bag body 5. And if it does in this way, the shift | offset | difference from the target position of the above-mentioned sealing position can be prevented. However, the period during which the collars 5j and 5j are gripped in the backward movement is not limited to the above. That is, the period may be shorter than the above or longer than the above. In either case, the movement restriction effect of the corresponding bag 5 can be obtained.

  In relation to this, preferably, as shown in the schematic perspective view of FIG. 13, the shape of the flange portion 41 hc of the pusher 41 may be a shape in which the vertical dimension becomes smaller toward the front. . According to the flange 41hc having such a shape, the cleaning sheet group 1G in the bag body 5 moves backward together with the pusher 41 when the pusher 41 moves backward (for example, FIG. 8C). This can also be suppressed.

  Further, desirably, as shown in FIG. 8C, a pressing member 91 is provided at a position immediately above the bag body 5 moved to the forward limit P41F by the pusher 41, and the bag body 5 is moved from above by the pressing member 91. It is good to comprise so that it can switch alternatively to the pressing state which presses, and the non-pressing state which does not press.

  In this way, the pressing member 91 can be set to the pressing state in the backward movement of the pusher 41 as shown in FIG. 8C. For example, the pressing member 91 can be maintained in the pressed state for at least the entire period from the start time of the backward movement to the time when the entire pusher 41 is pulled out from the bag body 5. As a result, as in the case of the grip portion 52 of the mouth closing mechanism 50 described above, the bag member 5 and the rear side of the cleaning sheet group 1G that can occur in the retreating operation of the pusher 41 also by the pressing member 91. It becomes possible to effectively suppress the deviation to However, the period set in the pressed state in the backward movement is not limited to the above. That is, the period may be shorter than the above or longer than the above. In either case, it is possible to obtain the effect of suppressing the displacement of the corresponding bag 5 and the cleaning sheet group 1G.

  More desirably, as shown in FIG. 10C, after the upper and lower seal plates 61u and 61d of the sealing mechanism 60 are in a state of sandwiching the opening 5k, the pressing state of the pressing member 91 is the non-pressing state. It is good to be switched to. Then, the pressing member 91 may be used to detect the phenomenon that the cleaning sheet group 1G recovers to the bulky state in the bag body 5 that may occur after the pusher 41 is pulled out of the bag body 5, that is, the expansion phenomenon of the cleaning sheet group 1G. Therefore, it is possible to effectively suppress the opening of the mouth portion 5k that may occur in association with the expansion phenomenon. As a result, the sealing plates 61u and 61d of the sealing mechanism 60 can perform the sealing process of the mouth portion 5k more stably.

  In this example, a predetermined device is applied to the pressing member 91. And according to this device, even if it is in the state where the collar part 41hc of the pusher 41 is contained in the bag body 5 as shown in FIG. 8B, the bag body 5 and the cleaning sheet group 1G without pressing the pusher 41. Only can be selectively pressed. As shown in FIG. 13, a slit-shaped notch SL41hc is formed in the collar portion 41hc of the pusher 41 as a contrivance at the center position in the left-right direction. When the pusher 41 is positioned at the forward limit P41F, the above-described pressing member 91 is disposed to face directly above the notch portion SL41hc. Therefore, even when the flange 41 hc of the pusher 41 is in the bag body 5, the pressing member 91 can selectively press only the bag body 5 and the cleaning sheet group 1 </ b> G.

  Further, as shown in FIG. 13, the cutout portion SL41hc is formed to extend rearward from the front end edge of the flange portion 41hc. That is, the front end edge of the flange portion 41hc is divided by the cutout portion SL41hc. ing. Therefore, even when the pressing member 91 is in the pressed state, the pusher 41 can move backward without interfering with the pressing member 91 at all.

  Incidentally, the switching operation between the pressing state and the non-pressing state of the pressing member 91 is performed by an appropriate driving source (not shown) such as a hydraulic cylinder, an air cylinder, or a servo motor.

When the pusher 41 moves to the forward limit P41F as shown in FIGS. 8A and 8B, the bag body 5 moved forward by the pusher 41 is the target stop position of the bag body 5 at the forward limit P41F. There is a risk that it will be sent further forward.
Therefore, desirably, a stopper 95 is provided as shown in FIGS. 8B and 8C, thereby restricting the bag body 5 from moving further beyond the target stop position. Incidentally, when the bag body 5 is properly stopped at the target stop position, the sealing target position of the mouth portion 5k of the bag body 5 is located at the arrangement position of the seal plates 61u and 61d of the sealing mechanism 60. It becomes a state.

  As shown in FIGS. 8B and 8C, the stopper 95 has, for example, a plate member 95 that moves up and down as a main body. And if it descend | falls to a lower limit position like FIG. 8C, the stopper 95 will be in the state which opposes the plate | board surface with the predetermined interval from the front with respect to the bottom part 5b of the bag body 5. FIG. Accordingly, the forward movement of the bag body 5 can be restricted in this state. On the other hand, if it raises to an upper limit position like FIG. 8B, since the stopper 95 will be in the state which does not oppose the bottom face 5b of the bag body 5, the movement of the bag body 5 is not controlled in the said state.

The raising / lowering operation of the stopper 95 is performed by an appropriate drive source (not shown) such as a hydraulic cylinder, an air cylinder, a servo motor, and the like. The raising / lowering operation includes the forward and backward movements of the pusher 41 and the belt conveyor 70. This is performed in conjunction with the discharge operation of the machine.
For example, the lowering operation of the stopper 95 is performed so that the stopper 95 reaches the lower limit position after the belt conveyor 70 finishes discharging the bag body 5 and before the next pusher 41 reaches the forward limit P41F. Done. The raising operation of the stopper 95 is performed so that the stopper 95 reaches the upper limit position after the pusher 41 starts to move backward and before the discharge mechanism 70 starts the discharge operation of the bag body 5.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof. For example, the following modifications are possible.

  In the above-described embodiment, as an example of the closing mechanism serving as the mouth closing mechanism 50, the pair of gripping portions 52 and 52 grips the flange portions 5j and 5j of the mouth portion 5k, and the pair of gripping portions 52 and 52 are The structure in which the mouth portion 5k is pulled to both sides in the left-right direction by moving to both sides in the direction is shown, but the mechanism is not limited to this as long as the mouth portion 5k can be pulled to both sides. For example, a configuration having a pair of left and right suction portions that suck and hold the flange portions 5j and 5j of the mouth portion 5k may be used. That is, even if the pair of suction portions are attracted to the corresponding flanges 5j and 5j, the pair of suction portions are moved to both sides in the left-right direction, so that the mouth portion 5k is pulled to both sides in the left-right direction. good.

  In the above-described embodiment, the cleaning sheet 1 is shown as an example of the bulky sheet product 1, but the present invention is not limited thereto. For example, it may be a disposable diaper or a sanitary napkin, or may be an individually packaged product in which these are individually packaged.

  In the above-described embodiment, each bucket 24, 24... Of the bag transport mechanism 20 is provided and supported by the disk member 22, but is not limited to the disk member 22. For example, instead of the disk member 22, a frame member that rotates around a predetermined rotation axis C22 along the front-rear direction may be used as the main body. Needless to say, an opening along the front-rear direction corresponding to each bucket 24, 24...

  In the above-described embodiment, the case where the three directions of the up-down direction, the left-right direction, and the front-rear direction are orthogonal to each other is illustrated, but the present invention is not limited to this. That is, as long as these three are in a crossing relationship with each other, they need not be orthogonal.

  In the above-described embodiment, the thermoplastic resin film 5s is used as the sheet material 5s as the material of the bag body 5 and the bag body 5 is formed from the single sheet material 5s. However, the present invention is not limited to this. . For example, the sheet material 5s may be a non-woven fabric or a woven fabric, and the bag body 5 may be formed of a plurality of sheet materials. For example, when the bag body 5 has a body portion and a bottom portion where the mouth portion 5k is provided, the body portion and the bottom portion may be formed of separate sheet materials 5s and 5s, respectively. The part may be formed of two sheet materials 5s and 5s.

1 Cleaning sheet (sheet-like product),
1G cleaning sheet group (sheet-like product group),
2a base sheet, 2b auxiliary sheet, 2h insertion hole,
3 Fiber bundles, 4 handle members,
5 Packaging bag, 5b Bottom,
5ew both ends, 5j collar, 5jk part, 5k mouth,
5s thermoplastic resin film (sheet material), 5ss surface,
10 Packaging equipment,
20 bag body transport mechanism, 22 disc member, 24 bucket, 24a U-shaped cross section member 30 cleaning sheet group transport mechanism (transport mechanism), 32 lift member,
40 push-in mechanism, 41 pusher,
41h head part (pusher main body), 41ha front end face, 41hc collar part,
41r rod part,
50 mouth closing mechanism,
52 gripping part, 54Ld link mechanism, 54Lu link mechanism,
54ac air cylinder, 54acp piston,
54u gripping claw, 54d gripping claw,
54gu linear guide, 54gd linear guide,
54 ub root side part, 54 db root side part,
54ue tip side part, 54de tip side part,
60 sealing mechanism, 61u sealing plate, 61da lower surface,
61d seal plate, 61da top surface,
70 belt conveyor (discharge mechanism), 72 endless belt,
91 pressing member, 95 stopper,
L1 cleaning sheet production line, L5 packaging bag production line,
DL1 extrusion mechanism, CVL1 belt conveyor,
SL41hc cutout,
C22 rotation axis,
P32U upper limit position, P32L lower limit position P41F forward limit, P41B reverse limit,
P52A distant position, P52N approach position,
PR1 cleaning sheet group receiving position, PR5 bag receiving position,
PW1G cleaning sheet group insertion standby position, PW5 bag body insertion standby position,

Claims (10)

A package in which a plurality of sheet-like products are stacked in the thickness direction of the sheet-like product and a sheet-like product group is inserted into the packaging bag body from the mouth portion of the packaging bag body to seal the mouth portion. A device,
An outer shell member that is covered with the packaging bag on the outer peripheral surface and includes a passage space through which the sheet-like product group passes;
A push-in mechanism for inserting the sheet-like product group into the bag body by pushing in while sliding the sheet-like product group from the mouth of the packaging bag body toward the bottom of the bag body;
A closing mechanism for closing the mouth part by pulling the mouth part of the bag body in a state in which the sheet-like product group is inserted to both sides in an intersecting direction intersecting a pushing direction of the pushing mechanism;
A sealing mechanism that seals the mouth portion pulled by the closing mechanism ,
The push-in mechanism pushes the sheet-like product group into the packaging bag body indirectly by passing the space for passage through the sheet-like product group while sliding the sheet-like product group, and further pushing the sheet-like product group into the packaging bag body. The packaging bag body is pushed together with the sheet product group to remove the packaging bag body from the outer member, and further to the position of the closing mechanism and the sealing mechanism, for the packaging containing the sheet product group. A packaging device for a sheet-like product group formed by stacking a plurality of sheet-like products, wherein a bag body is pushed in . The packaging device according to claim 1,
The mouth part has flanges protruding outward in the cross direction at positions on both sides of the cross direction,
The closing mechanism has grip portions on both sides in the intersecting direction to sandwich and grip the collar portion from the thickness direction of the collar portion,
A plurality of sheet-like products are stacked by pulling the mouth part to both sides of the crossing direction by moving the gripping part in a state of gripping the collar part outward in the crossing direction. Sheet product packaging equipment. The packaging device according to claim 2,
The push-in mechanism has a pusher that reciprocates back and forth along the push-in direction,
While inserting a part of the pusher into the bag, the pusher moves forward toward the bottom of the bag, thereby pushing the sheet-like product group into the bag.
While the sheet-like product group remains in the bag body, the pusher moves backward to pull out the part of the pusher to the outside of the bag body, and the pusher performs before the forward movement operation. To the position of
In the retreating operation, a sheet-like product group packaging apparatus in which a plurality of sheet-like products are stacked, wherein the gripping part regulates the movement of the bag body by gripping the collar part. The packaging device according to claim 2 or 3,
The push-in mechanism has a pusher that reciprocates back and forth along the push-in direction,
While inserting a part of the pusher into the bag, the pusher moves forward toward the bottom of the bag, thereby pushing the sheet-like product group into the bag.
While the sheet-like product group remains in the bag body, the pusher moves backward to pull out the part of the pusher to the outside of the bag body, and the pusher performs before the forward movement operation. To the position of
A pressing member capable of switching between a pressing state in which the bag body in a state in which the sheet-shaped product group is inserted is pressed from the outside along the thickness direction and a non-pressing state in which the sheet body is not pressed;
In the retreating operation, the pressing member is set in the pressed state, and a sheet-like product group packaging apparatus in which a plurality of sheet-like products are stacked. The packaging device according to claim 4,
The sealing mechanism has a pair of clamping members provided so as to be able to sandwich the mouth from both sides of the second intersecting direction intersecting both the intersecting direction and the pushing direction,
The pinching member seals the mouth portion by joining the mouth portion with an inner peripheral surface while the mouth portion is pinched.
The sheet formed by stacking a plurality of sheet-like products, wherein the pressing state of the pressing member is switched to the non-pressing state after the pressing member has pressed the mouth. Packaging product group. A packaging device according to any one of claims 3 to 5,
The thickness direction of the sheet-like product faces a second intersecting direction intersecting both the intersecting direction and the pushing direction,
The pusher has a pusher body whose front end surface abuts on the sheet-like product group when pushed in, and a flange projecting forward from one end of the front end surface in the thickness direction,
Next, in order to interpose the sheet-like product group to be pushed in at a predetermined position between the front end surface of the pusher and the bag body, the sheet-like product group is arranged from the other side along the second crossing direction. A transport mechanism for transporting toward the one side;
In the process of transporting the sheet-like product group to the predetermined position, the transport mechanism compresses the sheet-like product group in the second intersecting direction in cooperation with the collar portion, and in the second intersecting direction. A packaging device for a sheet-like product group formed by stacking a plurality of sheet-like products, wherein the sheet-like product group is pushed into the bag by the pusher while maintaining the sheet-like product group in a compressed state. The packaging device according to any one of claims 2 to 6,
The bag body is formed using one or a plurality of sheet materials as a material,
In the sheet material, the surfaces corresponding to the inner peripheral surface of the bag body and facing each other are joined at the ends in the intersecting direction, so that the flange portion is formed. A packaging device for a group of sheet-like products in which a plurality of sheet-like products are stacked. A packaging device according to any one of claims 1 to 7,
The folded portion of the one sheet material forms the bottom of the bag,
The packaging device for a sheet-like product group in which a plurality of sheet-like products are stacked so that the folded portion is folded in an M shape so that the bottom portion can be developed in the thickness direction. The packaging device according to claim 2,
The sealing mechanism has a pair of clamping members capable of clamping the mouth from both sides of the second intersecting direction intersecting both the intersecting direction and the pushing direction,
The pinching member seals the mouth portion by joining the mouth portion with an inner peripheral surface while the mouth portion is pinched.
The pinching member is arranged in a position farther from the sheet-like product group in the bag body than the grip portion of the closing mechanism with respect to the pushing direction, and a plurality of sheet-like products are stacked. A packaging device for sheet-like product groups. A package in which a plurality of sheet-like products are stacked in the thickness direction of the sheet-like product and a sheet-like product group is inserted into the packaging bag body from the mouth portion of the packaging bag body to seal the mouth portion. A method,
Preparing an outer member provided with a space for passing the sheet-shaped product group on the inner side, with the packaging bag covered on the outer peripheral surface;
The sheet-like product group is inserted into the bag body by pushing the sheet-like product group while sliding toward the bottom of the bag body from the mouth portion of the packaging bag body using a pushing mechanism. When,
Closing the mouth part by pulling the mouth part of the packaging bag body in a state where the sheet-like product group is inserted to both sides in the crossing direction intersecting the pushing direction of the pushing mechanism;
Sealing the mouth in a state of being pulled on both sides in the crossing direction,
The push-in mechanism pushes the sheet-like product group into the packaging bag body indirectly by passing the space for passage through the sheet-like product group while sliding the sheet-like product group, and further pushing the sheet-like product group into the packaging bag body. The packaging bag body is pushed together with the sheet product group to remove the packaging bag body from the outer member, and further to the position of the closing mechanism and the sealing mechanism, for the packaging containing the sheet product group. A packaging method for a sheet-like product group in which a plurality of sheet-like products are stacked, the bag body being pushed in .

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