JP5751704B2 - Sheet-shaped article stacking apparatus and stacking method - Google Patents

Description

  The present invention relates to a stacking apparatus and stacking method for stacking sheet-like articles.

  As a sheet-like article, a packaging bag for storing contents is known. The stacking operation of these packaging bags is performed by overlapping the packaging bags after bag making on the conveyor and stacking them in a state shifted at a predetermined interval. Therefore, it is necessary to arrange the bundles of the packaging bags once, align the bundles of the packaging bags, perform the visual inspection as appropriate, and then align the bundles of the packaging bags again and perform the packing operation. As described above, the conventional sheet-like article stacking operation is largely dependent on human hands, which has been an obstacle to increasing the bag-making speed.

  For this reason, there is known a stacking method that realizes speeding up and labor saving of the bag making operation by automating the stacking operation of the packaging bags. The stacking method of this configuration employs a stacking method in which flat packaging bags are stacked in the vertical direction, thereby speeding up the bag making operation and saving labor.

  For example, the following Patent Document 1 discloses a sheet stack in which a rectangular sheet such as a large number of bags is moved in the length direction, continuously fed to a predetermined feeding position, and stacked while aligning the end portions of the rectangular sheet. A transport method is described.

JP-A-62-93172

  In this way, when stacking sheets having a constant thickness or sheets without curling (curling), it is possible to automate by stacking vertically from a flat state. However, when stacking packaging bags with uneven thickness due to bulkiness of the gusset or uneven packaging bags that are locally curled due to heat shrinkage due to heat sealing, etc. However, since the bundle of packaging bags is not stable, it is difficult to automate the collection.

  Further, in the method of stacking sheet-like articles in the vertical direction, the work of packing a bundle of sheet-like articles in which a predetermined number of sheets are stacked is performed manually by the operator, but this packing work is stacked on a conveyor or the like. A bundle of sheet-like articles must be taken up, and work must be done carefully without losing the sheet-like article on the conveyor. As described above, according to the conventional stacking apparatus and stacking method, the burden on the worker is large and it is difficult to suppress the number of work steps, and there is a problem that one worker needs to be arranged for each stacking apparatus.

  The present invention has been made to solve the above-described problems, and can automate the accumulation without affecting the shape of the packaging bag, thereby speeding up the bag making operation and saving labor. An object of the present invention is to provide a stacking apparatus and stacking method for sheet-like articles.

An apparatus for stacking sheet-like articles according to the present invention that solves the above-described problem, a transport unit that transports a plurality of sheet-like articles, and a batch of the plurality of sheet-like articles in a direction opposite to the transport direction of the transport unit A rising member that raises, and a feeding member that feeds the sheet-like article located at the rear end of the sheet-like article toward the standing member, and the conveying section has a width of the sheet-like article located at the rear end. comprising a profile integrated toward the upright member by extruding a substantially central direction, said delivery member comprises Rukoto respectively provided on both sides in the width direction of the conveying section.

  The sheet-like article stacking apparatus according to the present invention further includes a pressing portion that is adjacent to one end side in the conveying direction of the upright member and restricts the plurality of sheet-like articles from protruding from the one end side.

  In the sheet-like article stacking apparatus according to the present invention, the upright members are respectively provided on both sides of the transport unit.

  In the sheet-like article stacking apparatus according to the present invention, the delivery member is provided on each side of the transport unit.

Further, in the sheet-like article stacking apparatus according to the present invention, the sheet-like article stacking device is attached so as to be able to appear and retract in a direction intersecting with the conveyance direction and the conveyance surface of the conveyance unit. In the sheet-like article stacking apparatus according to the present invention, the conveying unit is controlled by short pitch intermittent feed and long pitch intermittent feed.

In addition, the sheet-like article stacking method according to the present invention for solving the above-described problems includes a conveying step of conveying a plurality of sheet-like articles and having a conveying portion formed with a profile; An upright process including an upright member that collectively raises in a direction opposite to the conveying direction of the conveying process; and a sheet-like article positioned at a rear end of the sheet-like article is sent out toward the standing-up process , and the conveying unit A feeding step including feeding members provided on both sides in the width direction of the sheet, and a primary stacking step of stacking a substantially central portion in the width direction of the sheet-like article located at the rear end by the profile toward the standing step. When, characterized Rukoto a secondary integration step of sandwiching the sheet-like article by the standing member and the delivery member.

  The sheet-like article stacking method according to the present invention further includes a pressing step for restricting the plurality of sheet-like articles from protruding from the one end at one end in the conveying direction of the standing-up step.

  According to the present invention, there is provided a sheet-like article stacking apparatus and stacking method that can automate stacking without affecting the shape of the packaging bag, and can increase the speed and labor saving of bag making operations. Can be provided.

The perspective view for demonstrating the stacking apparatus of the sheet-like article which concerns on this embodiment. The figure for demonstrating operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The figure for demonstrating operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The figure for demonstrating operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The conceptual diagram for demonstrating the detailed operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The conceptual diagram for demonstrating the detailed operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The conceptual diagram for demonstrating the detailed operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The conceptual diagram for demonstrating the detailed operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The conceptual diagram for demonstrating the detailed operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The conceptual diagram for demonstrating the detailed operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The conceptual diagram for demonstrating the detailed operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The conceptual diagram for demonstrating the detailed operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The conceptual diagram for demonstrating the detailed operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment. The conceptual diagram for demonstrating the detailed operation | movement of the stacking apparatus of the sheet-like article which concerns on this embodiment.

  Hereinafter, a stacking apparatus and stacking method for sheet-like articles according to the present invention will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. Absent.

  FIG. 1 is a perspective view for explaining an apparatus for stacking sheet-like articles according to this embodiment, and FIGS. 2 to 4 are diagrams for explaining the operation of the apparatus for stacking sheet-like articles according to this embodiment. 5 to 14 are conceptual diagrams for explaining the detailed operation of the sheet-like article stacking apparatus according to the present embodiment.

  As shown in FIG. 1, the sheet-like article stacking apparatus 1 according to this embodiment includes a plurality of sheet-like articles 2 that overlap each other and a sheet bundle 3 that is shifted at a predetermined interval along the conveyance direction F. A conveying unit 10 that conveys, a standing member 20 that collectively raises the sheet bundle 3 in a direction intersecting the conveying direction F, and a sheet-like article 2 that is located at the rear end of the sheet bundle 3 is directed toward the standing member 20. And a delivery member 30 for delivery. In the present embodiment, the sheet-like article 2 refers to paper, cloth, film, sheet, and a packaging bag made from these, and any form can be used as long as it is a packaging bag such as a flat bag, a gusset bag, and a pillow bag. Instead, the closure member may be bonded to these packaging bags.

  In addition, as shown in FIG. 2, an introduction unit 12 that conveys a sheet-like article 2 manufactured by a bag making machine (not shown) is installed on one end side of the conveyance unit 10. It is nipped by the pinch roller 13 attached to the end of the section 12 and dropped onto the transport section 10. In addition, the introducing | transducing part 12 is comprised as a belt conveyor driven and conveyed by roller 12a, 12a.

  The conveyance part 10 is comprised as a belt conveyor rotated and conveyed by the rollers 14 and 14, and performs intermittent operation | movement mentioned later with the drive source which is not shown in figure. As shown in FIG. 1, side walls 16 and 16 are formed on both side surfaces of the conveyance unit 10 in order to prevent the sheet bundle 3 from dropping from the conveyance unit. Further, the conveyance unit 10 is formed with profiles 11, 11 protruding outward from the conveyance unit 10 at a predetermined interval. Note that the width of the conveyance unit 10 is smaller than the width of the sheet-like article 2.

  One end of the upright member 20 is attached to both end portions in the width direction of the transport unit 10 so as to be rotationally driven via a pivot 22 and is arranged in a slope shape so as to have an acute angle with respect to the transport direction F in the initial state. Has been. Further, the upright member 20 can rotate so as to stand up in a direction opposite to the transport direction F of the transport unit 10 via the pivot 22. Here, the direction facing the transport direction F refers to a direction rotated so that the angle α formed by the upright member 20 and the transport direction F is larger than the acute angle in the initial state. The angle α formed is preferably set to about 30 ° to 60 °. If it is 30 ° or less, it is difficult to align the end portions of the sheet-like article 2 and it will be difficult to stand the sheet as will be described later, and if it is 60 ° or more, the sheet-like article 2 is conveyed when the sheet-like article 2 is conveyed. This is because 2 slides down from the upright member 20 and it becomes difficult to accumulate. The angle α formed is more preferably set to 45 °.

  As shown in FIG. 1, the delivery member 30 is a cylindrical member, and a pair is formed on both sides in the width direction of the transport unit 10. Further, the delivery member 30 is formed so as to be able to appear and retract in a direction intersecting with the transport direction F and the transport surface of the transport unit 10 and to be movable along the transport direction F.

  Further, a pressing portion 40 adjacent to the upright member 20 extends along the transport direction F on the opposite end side of the upright member 20 from the end where the pivot 22 is formed. The pressing portion 40 is a pair of columnar members provided at a height shorter than the entire length of the sheet-like article 2 and restricts the sheet-like article 2 accumulated on the standing member 20 from protruding. Furthermore, the pressing portion 40 is attached so as to be retractable along the conveyance direction F, and prevents interference with a gripping portion 50 described later.

  As shown in FIG. 2, a grip portion 50 is formed on the upright member 20, and the sheet bundle 3 stacked on the standup member 20 can be gripped and conveyed by opening and closing the grip portion 50 as appropriate. it can.

  Note that the operations of the upright member 20, the delivery member 30, the pressing portion 40, and the gripping portion 50 described above are driven and controlled by actuators 21, 31, 41 and 51. As the actuators 21, 31, 41, 51, various devices capable of controlling movement, such as motors and linear actuators, can be applied.

  As shown in FIG. 2, the sheet-shaped article stacking apparatus 1 according to the present embodiment formed as described above is arranged in a predetermined manner while positioning the leading sheet-shaped article 2 in the sheet bundle 3 with one profile 11. The paper is transported along the transport direction F on the transport unit 10 while being shifted at intervals. In addition, the conveyance part 10 is controlled by the long pitch fixed-spacing feed when the number of the sheet-like articles 2 is 10 or less, and when the number of the sheet-shaped articles 2 exceeds 11, it is controlled. Specifically, the short pitch fixed-size feed is moved by about 3 mm along the transport direction F, and the long pitch fixed-size feed is moved about 9 mm along the transport direction F.

  In addition, since the stacking apparatus for sheet-like articles according to the present embodiment performs short-pitch fixed-size feed and long-pitch fixed-size feed, adjacent sheets are used at the start of stacking (up to the first to tenth sheets). The overlap cost of the article 2 is large. Thus, since the overlap margin of the sheet-like articles 2 adjacent to each other at the start of accumulation is increased, it is possible to prevent malfunction such as the sheet-like article 2 being caught on the standing member 20 when it rises on the standing member 20. And the operation can be performed smoothly.

  As described above, since the sheet bundle 3 is shifted and stacked at a predetermined interval on the conveying unit 10, even if the number of stacked sheet-like articles 2 is increased, the collapse of the load due to stacking does not occur.

  Then, as shown in FIG. 3, when a predetermined number of sheet-like articles 2 are conveyed, the sheet-like article 2 located at the head rises obliquely along the slope-like upright member 20 which is the initial state, and the remainder Similarly, the sheet-like articles 2 are sequentially laminated in accordance with the intermittent operation. At this time, the profile 11 passes between the upright members 20 and retracts.

  After a predetermined number of sheet-like articles 2 are stacked, as shown in FIG. 4, the standing member 20 is raised to raise the sheet-like article 2, and the delivery member 30 is projected onto the conveyance unit 10, and then the conveyance direction F The sheet-like article 2 located at the rear end of the sheet bundle 3 is sent out toward the upright member 20 by the movement of the sheet bundle 3, and the sheet bundle 3 is held in an upright state by the delivery member 30 and the upright member 20.

  As described above, since the sheet-like article stacking apparatus 1 according to the present embodiment holds the sheet bundle 3 upright with respect to the conveyance direction F, it can be easily grasped by the grasping unit 50 and is in a bundle state. Therefore, it is possible to reduce the burden on the worker involved in the packing work.

  Next, the stacking operation of the stacking apparatus for sheet-like articles according to the present embodiment will be described in detail with reference to FIGS.

  As shown in FIG. 5, at the start of accumulation, the sheet-like article 2 conveyed by the introduction unit 12 is nipped by the pinch roller 13 and falls onto the conveyance unit 10. At this time, the sheet-like article 2 is positioned by the profile 11.

  As illustrated in FIG. 6, the second and subsequent sheet-like articles 2 are stacked on the transport unit 10 while being shifted by a predetermined interval by intermittent feeding of the transport unit 10. 6-9, the sheet | seat bundle 3 shifted and laminated | stacked by the predetermined space | interval is represented using the schematic diagram of a rhombus or trapezoid.

  As shown in FIG. 7, the sheet-like article 2 conveyed to the position of the upright member 20 rises along the slope of the upright member 20 and is laminated on the upright member 20 by a predetermined number. At this time, the profile 11 passes between the upright members 20 and retracts.

  As shown in FIG. 8, when the sheet-like article 2 is stacked on the upright member 20 up to a predetermined number, the transport unit 10 ends the intermittent feeding operation of transporting the sheet-like article 2 while being shifted at a predetermined interval. Thus, fast-forwarding is performed in which the sheet-like article 2 positioned at the rear end of the sheet bundle 3 is pushed out toward the upright member 20. This fast-forwarding is performed in order to primarily accumulate the sheet bundle 3 laminated on the upright member 20, and this primary accumulation enables easy accumulation even for bulky bags that are difficult to accumulate.

  As shown in FIGS. 9 and 10, when the sheet bundle 3 is primarily accumulated, the feeding member 30 protrudes on the conveyance unit 10, and the standing member 20 stands up in a direction substantially perpendicular to the conveyance direction F. Thereafter, the delivery member 30 moves toward the upright member 20 along the conveyance direction F, and performs secondary accumulation. In this secondary stacking, the sheet-like article 2 can be taken in and out in preparation for the operation of bringing the sheet bundle 3 upright with the delivery member 30 and the upright member 20 and hitting the upper end of the sheet bundle 3 in the next process. It is pinched in a loose state. At this time, the profile 11 in which the plurality of sheet-like articles 2 are primarily accumulated positions the sheet-like article 2 for the accumulation of the next bundle, and the accumulation operation of the next bundle is started.

  Thereafter, as shown in FIGS. 11 to 14, the gripping portion 50 is lowered, and the plate-like aligning member 52 is lowered to strike and align the upper end portion of the sheet bundle 3, so that the gripping portion 50 grips the sheet bundle 3. By doing so, the sheet bundle 3 is gripped and conveyed. The conveyed sheet bundle 3 is inserted into a packing box such as a bucket disposed at the conveyance destination. After the gripping part 50 grips the sheet bundle 3, the upright member 20 rotates to the initial position and prepares to receive the next sheet bundle 3, so that the stacking operation of the plurality of sheet-like articles 2 is continuously performed. And do it.

  As mentioned above, although preferred embodiment of this invention was described, the technical scope of this invention is not limited to description of the said embodiment. Various modifications or improvements can be added to the embodiment.

  For example, in the above-described embodiment, the case where a belt conveyor is used for the transport unit 10 has been described, but the transport unit 10 may use a transport roll or the like.

  Moreover, in the said embodiment, although the case where the sending member 30 and the holding | suppressing part 40 were formed in the column shape was demonstrated, these members may be formed in plate shape, and may be formed in prismatic shape. Absent.

  Furthermore, in the above-described embodiment, the case where the bundle of the sheet-like articles 2 accumulated by the gripping unit 50 is gripped and transported has been described. However, the operator may grip and transport the bundle without using the gripping unit 50. . At this time, it is possible to adjust the angle at which the standing member 20 stands up so that the worker can easily perform the work.

  It is apparent from the description of the scope of claims that embodiments with such changes or improvements can be included in the technical scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 Stacking device, 2 Sheet-like article, 10 Conveyance part, 11 Profile, 12 Introduction part, 13 Pinch roller, 14 roller, 15 Conveyor, 16 Side wall, 20 Standing member, 21, 31, 41, 51 Actuator, 30 Delivery member, 40 holding part, 50 gripping part, F transport direction.

Claims (7)

A transport unit for transporting a plurality of sheet-like articles;
Standing members that collectively raise the plurality of sheet-like articles in a direction opposite to the conveying direction of the conveying unit,
A delivery member for sending out the sheet-like article located at the rear end of the sheet-like article toward the upright member;
Equipped with a,
The transport unit includes a profile that accumulates toward the upright member by extruding a substantially center in the width direction of the sheet-like article located at the rear end,
The delivery member is integrated device of a sheet-like articles, characterized in Rukoto respectively provided on both sides in the width direction of the conveying section.   2. The sheet-like article stacking apparatus according to claim 1, further comprising a pressing portion that is close to one end side in the conveying direction of the upright member and restricts the plurality of sheet-like articles from protruding from the one end side. . The upright member is integrated device of a sheet-like article according to claim 1 or 2, characterized in that provided on both sides of the transport unit. The sheet-like article accumulation according to any one of claims 1 to 3 , wherein the delivery member is attached so as to be able to protrude and retract in a direction intersecting with a conveyance direction and a conveyance surface of the conveyance unit. apparatus.   5. The sheet-like article stacking apparatus according to claim 1, wherein the conveyance unit is controlled by short pitch intermittent feed and long pitch intermittent feed. 6. A transporting step of transporting a plurality of sheet-like articles and having a transporting part in which a profile is formed ;
An erecting step including an erecting member that raises the plurality of sheet-like articles collectively in a direction opposite to the conveying direction of the conveying step;
A feeding step of feeding out the sheet-like article located at the rear end of the sheet-like article toward the standing-up step, and a feeding member provided on both sides in the width direction of the transport unit ;
Equipped with a,
A primary stacking step of stacking a substantially central portion in the width direction of the sheet-like article positioned at the rear end by the profile toward the standing-up step, and a secondary holding the sheet-like article by the feeding member and the standing member integrated method of sheet-like articles, characterized in Rukoto a collecting step. The method for accumulating sheet-like articles according to claim 6 , further comprising a pressing step for restricting the plurality of sheet-like articles from protruding from the one end at one end in the conveying direction of the upright member .

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