Material guide device

Abstract

To supply a material along a preset path.SOLUTION: In a material guide device, a roll 3 is provided which has an outer peripheral surface 3F extending along a preset supply path 2 of a belt-like paper material 1 at a place where a supply direction of the material 1 changes into a downward downstream direction along a vertical direction D2 from an upstream direction D1 different from the vertical direction D2 in the supply path 2. Out of the material 1, an extension part 1C which is a portion further extending to the supply direction downstream side than the outer peripheral surface 3F is provided at packaging equipment suspended at the roll 3, and the supply direction of the material 1 is guided. The material guide device includes: a processing unit 4 for performing packaging processing with respect to the extension part 1C suspended in the downstream direction from the roll 3; and a guide 5 for pressing the extension part 1C against the direction toward the downstream direction from the posture along an NG direction D3 deviated to the upstream direction D1 side from the downstream direction, and for guiding the supply direction of the extension part 1C.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a material guiding device for guiding the supply direction of a strip-shaped material in packaging equipment where the strip-shaped material is supplied.

Background Art

[0002] As one of the packaging equipment, there is known equipment for processing a strip-shaped material supplied along a preset path. For example, there has been proposed packaging equipment in which a material made of a resin film is supplied, and the supplied material is subjected to packaging processes such as laminating or separating (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, as a material supplied in the packaging equipment, instead of the resin film material as described above, it is conceivable to use a paper material from the viewpoint of reducing environmental load. Since a paper material tends to have higher stiffness than a resin film material, there is a risk of deviating from the supply path due to a repulsive force that acts so as to return the bending at a location where the supply direction changes. Specifically, when the paper material is supplied with the tip portion on the downstream side of the supply direction hanging down, a repulsive force acts to counteract the weight acting on the hanging portion of the material. Due to this repulsive force, the material may deviate from the preset supply path and may be supplied in an inappropriate direction. Therefore, there is room for improvement in supplying the material along the preset path.

[0005] The material guidance device described in this invention was devised in view of the above-mentioned problems, and one of its purposes is to supply materials along a predetermined route. However, other purposes of this invention include not only this purpose, but also the functions and effects derived from each configuration shown in the "Modes for Carrying Out the Invention" described later, which are not obtainable with conventional technology. [Means for solving the problem]

[0006] The material guiding device disclosed herein is provided in a packaging facility in which a roll having an outer peripheral surface extending along the supply path is provided at a point in a preset supply path of a strip-shaped paper material where the supply direction of the material changes from an upstream direction different from the vertical direction to a downward downstream direction along the vertical direction, and an extended portion of the material that extends downstream in the supply direction from the outer peripheral surface is suspended from the roll to guide the supply direction of the material. The material guiding device comprises a processing unit that performs packaging processing on the extended portion suspended from the roll along the downstream direction, and a guide that holds the extended portion in a direction toward the downstream direction from a position along the NG direction which deviates from the downstream direction toward the upstream direction, and guides the supply direction of the extended portion. [Effects of the Invention]

[0007] According to this material guidance device, materials can be supplied along a pre-set route. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic diagram showing a portion of a material that is guided in the supply direction by a material guide device, with the material being broken to illustrate the effect. [Figure 2] This is a schematic diagram showing a material guiding device according to one embodiment. [Figure 3] This is a schematic diagram showing a modified material guidance device. [Modes for carrying out the invention]

[0009] The following describes a material guiding device as an embodiment of the device. The material guiding device of this embodiment is installed in packaging equipment that transports strip-shaped materials along a preset supply route. In the packaging equipment, materials are sequentially processed for packaging as they are transported along the supply route, and a package containing the contents is manufactured. An example of a package manufactured in this packaging equipment is a package in which multiple toilet rolls (contents) are wrapped in a paper bag made of paper material. The material guiding method of this embodiment is implemented by a material guiding device incorporated into such packaging equipment.

[0010] In describing this embodiment, the directions used are defined based on the material supply direction, with upstream and downstream being determined from the material supply direction. In the planar region where the material extends in a strip shape, the direction perpendicular to the supply direction is defined as the width direction, and the direction perpendicular to both the supply direction and the width direction is defined as the thickness direction. Furthermore, the direction along the direction in which gravity acts is defined as downward, and the opposite direction to downward is defined as upward. When these downward and upward directions are not distinguished, they are referred to as the vertical direction. The supply direction is the direction in which the processing of materials progresses within the packaging equipment, and is also referred to as the MD direction (Machine Direction) or flow direction. The width direction is also referred to as the CD direction (Cross Direction), and the thickness direction is also referred to as the TD direction (Transverse Direction).

[0011] [I. One Embodiment] In the embodiment described below, the configuration of the material (the material to be guided) guided in the supply direction by the material guiding device and material guiding method is explained in item [1], the configuration of the material guiding device is described in item [2], and the configuration of the material guiding method is described in item [3]. Then, the operation and effects of the configurations in items [2] and [3] are described in item [4].

[0012] [1. Materials] As shown in Figure 1, the material 1 has gusset bags 10 arranged continuously along the supply direction (labeled "MD" in Figure 1). Each gusseted bag 10 is provided with a first side 11 and a second side 12 as unfolded portions, and a pair of gussets 13 as folded portions. The face portions 11 and 12 face each other in the thickness direction and extend to the same area as material 1. The gusset 13 extends to the area of ​​material 1 excluding the center in the width direction and is folded in by a valley fold line F provided in the center in the thickness direction. The first face portion 11 and the second face portion 12 face each other in the thickness direction, and the width direction edges of the facing face portions 11 and 12 are connected via a pair of gussets 13.

[0013] Each gusseted bag 10 has its upstream portions 1U (shown as halftones in Figure 1) of its face portions 11 and 12 pre-bonded together. After each gusseted bag 10 is separated from the material 1, the face portions 11 and 12 in the areas excluding the upstream portion 1U are separated from each other, which unfolds the gusset 13 and widens the opening surrounded by the downstream edge 1D of the gusseted bag 10. In this way, until the face portions 11 and 12 are separated from each other, the gusseted bag 10 forms part of the strip-shaped material 1 and extends in a planar manner.

[0014] As described above, the material 1, in which gusseted bags 10 with detachable surfaces 11 and 12 via a gusset 13 are arranged in a continuous line in the supply direction, is a packaging material that is sequentially processed into paper bags for packaging contents. Yes, it is a paper-based material. Here, "paper-based material" refers to a material in which the proportion of paper is 50% or more (for example, the weight of pulp that makes up the paper is 50% or more of the total weight), and can also be said to be a material whose main component is paper. Therefore, paper-based materials include not only materials made of paper that has not been processed such as lamination or bonding, but also materials made of processed paper (composite material) to which a polyethylene layer (resin film layer) has been laminated or bonded. Examples of paper-based materials include laminated paper, glassine paper, mixed paper, and pure white paper.

[0015] Since the material 1 of this embodiment is made of paper as described above, it tends to have a higher rigidity than a material made of a resin film in the form of a thin film, and has a predetermined hardness (rigidity). The "predetermined hardness" mentioned here is a physical property that causes the material 1 to deviate from the preset supply path by a repulsive force that acts to return the bending of the material 1 at a location where the supply direction of the material 1 changes. The material 1 having a predetermined hardness as described above is corrected for deviation from the supply path by a material guiding device to be described next.

[0016] [2. Device] As shown in FIG. 2, the material guiding device is preset with three paths 2A, 2B, and 2C exemplified below as a supply path 2 through which the material 1 is conveyed. · Horizontal path 2A (upstream path): The most upstream path exemplified in this embodiment · Corner path 2B: A path set immediately after the horizontal path 2A · Vertical path 2C (downstream path): A path set immediately after the corner path 2B

[0017] The horizontal path 2A and the vertical path 2C are set in a planar shape (linear in side view). The horizontal path 2A extends along the horizontal direction D1 (an upstream direction different from the vertical direction), and the vertical path 2C extends along the vertical direction D2. On the other hand, the corner path 2B is set in a curved surface shape (curved in side view). The horizontal path 2A and the vertical path 2C are continuous via the corner path 2B.

[0018] In the horizontal path 2A, the material 1 is supplied from the upstream side to the downstream side (from the right to the left in FIG. 2) along the horizontal direction D1 while the vertical position remains unchanged. In the vertical path 2C, the material 1 is supplied in the downward direction (downstream direction) along the vertical direction D2. In the corner path 2B, the material 1 is supplied while the supply direction gradually changes from the horizontal direction D1 to the downward direction along the vertical direction D2. That is, the corner path 2B is provided at a location where the supply direction of the material 1 changes.

[0019] Material 1 extends along the aforementioned routes 2A, 2B, and 2C, and is broadly divided into the following three parts corresponding to each of the routes 2A, 2B, and 2C. • Base 1A: Part extending along the horizontal path 2A • Curved section 1B: The part that extends into the corner path 2B • Extension 1C: The part that extends along the vertical path 2C. The extension 1C is the part of material 1 that hangs down on the downstream side, while the base 1A and curved part 1B are the parts that support the hanging of the extension 1C on the upstream side.

[0020] The extension portion 1C hangs down from a roll 3, which has an outer peripheral surface 3F provided along the corner path 2B. Specifically, the roll 3 is positioned so that a portion of the outer peripheral surface 3F extends along the corner path 2B. The roll 3 is a member that guides the supply of material 1 and also a member that supports the hanging of the extension portion 1C in material 1. In this way, the extension portion 1C of material 1 that extends downstream from the outer peripheral surface 3F hangs down from the outer peripheral surface 3F, and material 1 is hung from the roll 3.

[0021] The base portion 1A, which extends from the source of the hanging portion 1C, is cut by the cutter 7. The cutter 7 is the cutting part that separates each gusset bag 10 from the material 1. The cutter 7 is positioned to cut the base 1A. The cutter 7 described above sequentially cuts the boundaries between adjacent gusset bags 10 in material 1.

[0022] The extension portion 1C hanging from the roll 3 is subjected to packaging processing by the processing unit 4, which will be described next. Processing unit 4 is a packaging processing part that processes the extension portion 1C hanging down from the roll 3. This processing unit 4 is set to process the extension portion 1C (more precisely, the material 1 along the pre-set supply path 2) hanging down from the roll 3 along the vertical path 2C, and processing the extension portion 1C that deviates from the vertical path 2C is either impossible or may result in defects.

[0023] The processing unit 4 described above is positioned to process the extension portion 1C that hangs down from the roll 3 along the vertical path 2C. More specifically, the processing unit 4 is located at a point where it is separated from the roll 3 by a distance equal to the range within which the extension portion 1C, hanging down by its own weight, deviates from the vertical path 2C due to a predetermined stiffness of the material 1. To give a specific example, the processing unit 4 is positioned below the roll 3 by the length in the supply direction to which two or fewer gusset bags 10 extend in the material 1. The roll 3, processing unit 4, and cutter 7 may be installed in the material guide device, or they may be installed in packaging equipment that is equipped with a material guide device, rather than in the material guide device itself.

[0024] In this embodiment, a suction arm 4 is exemplified as the processing unit 4. The suction arm 4 is a functional unit that widens the opening of the gusset bag 10 by separating the surfaces 11 and 12 of the extension 1C. The suction arm 4 is provided with a pair of arms 41 and 42 that clamp and hold the surfaces 11 and 12 of the extension 1C. The pair of arms 41 and 42 are positioned opposite each other, with an extension 1C hanging down from the roll 3 along the vertical path 2C, as shown below. • First arm 41: Extension 1 hanging down from the roll 3 along the vertical path 2C An arm provided on one side (right side in Figure 2) relative to C • Second arm 42: Extension 1 hanging down from roll 3 along vertical path 2C Arm located on the other side (left side in Figure 2) relative to C

[0025] The suction arm 4 described above can be switched between the closed and open operating states as shown below. • Closed state: A state in which the surfaces 11 and 12 of the extension 1C are clamped and held by suction. • Open state: A state in which the adsorbed surfaces 11 and 12 are separated from each other. In the suction arm 4 illustrated here, the second arm 42 moves toward and away from the fixed first arm 41, causing the arms 41 and 42 to grip and separate the surfaces 11 and 12. The timing of gripping and holding the surfaces 11 and 12 with the suction arm 4 is simultaneous with or immediately after cutting the material 1 by the cutter 7. If the suction arm were to hold the material 1 after a delay following the completion of cutting by the cutter, it could lead to displacement or falling of the material. Therefore, the reason for performing suction holding almost simultaneously with cutting, as described above, is to prevent displacement or falling of the material 1.

[0026] Incidentally, the extension 1C processed by the processing unit 4, exemplified by the suction arm 4, is pre-set in the packaging equipment to be supplied in a vertical path 2C in a position along the vertical direction D2. However, when the extension 1C is simply suspended from the roll 3 by its own weight, the material 1 is supplied along the horizontal path 2A due to the predetermined stiffness of the material 1. The extension portion 1C is supplied in a position (shown by a dashed line in Figure 2) that deviates from the vertical direction D2 and follows the NG direction D3 on the horizontal direction D1 side (upper left side in Figure 2). This may lead to the processing unit 4 being unable to process the extension portion 1C or to processing it poorly.

[0027] Therefore, the material guiding device of this embodiment is provided with a guide 5 that guides (corrects) the supply direction of the extension portion 1C. Guide 5 is an additional part that presses down on the extension 1C in the direction from the NG direction D3 toward the vertical direction D2 along the vertical path 2C (applies an external force). The extension 1C, which is positioned along the NG direction D3, is pressed down by Guide 5, thereby guiding the supply direction of the extension 1C.

[0028] If a thin, low-rigidity resin film is used as the material supplied to the packaging equipment, the extended portion of the material will sag along the vertical path 2C due to its own weight. Therefore, guidance in the supply direction is unnecessary for resin film materials. Therefore, Guide 5 can be considered the part that needs to be added when changing the resin film material supplied to the packaging equipment to paper material 1.

[0029] In this embodiment, the guide 5 is switched to either the ON state or the OFF state as described below, depending on the operating state of the suction arm 4. • ON state: The state in which the suction arm 4 is in the closed position and pressing down on the extension portion 1C. • OFF state: The suction arm 4 releases its pressure on the extension 1C when it is in the open state. state

[0030] In this embodiment, a spray device 5A and a clamping device 5B are exemplified as guides 5. The spray device 5A is an example of a guide 5 that holds the extension portion 1C (material 1) without contact, and the clamping device 5B is another example of a guide 5 that contacts the curved portion 1B (material 1) to hold the extension portion 1C. The spray device 5A is a device that sprays gas onto the extension section 1C. The spray device 5 illustrated here sprays gas onto two (or more) locations spaced apart in the width direction on the extension section 1C and is positioned above the horizontal path 2A and the roller 3. Air is an example of the gas sprayed by the spray device 5A. However, various gases usable in packaging equipment, such as nitrogen gas or argon gas, may also be used for spraying by the spray device 5A.

[0031] The clamping device 5B is a member that guides the extension portion 1C to a position along the vertical direction D2 by sandwiching a curved portion 1B between itself and the outer circumferential surface 3F of the roll 3 along the corner path 2B at a point where the supply direction of the material 1 changes from the horizontal direction D1 to the downward direction D2 of the vertical. The clamping device 5B exemplified here is a plate-shaped member having a lower surface with a shape corresponding to the outer circumferential surface 3F. When the gas injection device 5A is ON, it presses down on the extension portion 1C by blowing gas, and when it is OFF, it stops blowing gas to release the pressure on the extension portion 1C. Also, when the clamping device 5B is ON, it presses down on the extension portion 1C by sandwiching the curved portion 1B between itself and the outer surface 3F, and when it is OFF, it releases the pressure on the extension portion 1C by, for example, moving upwards to separate it.

[0032] In addition, the material guiding device of this embodiment is provided with a restricting member 6 on one side (the right side in Figure 2) of the vertical path 2C to structurally restrict the deviation of the extension portion 1C. Here, "one side" refers to the side opposite to the side of the vertical path 2C where the extension portion 1C is positioned in the orientation along the NG direction D3, and is the side on which the extension portion 1C is held down by the guide 5. The regulating member 6 is provided with a planar auxiliary guide surface 6F that is located along the vertical path 2C. The auxiliary guide surface 6F is positioned below the roll 3 (downward in the vertical direction) and extends at least above the processing section 4 (upward in the vertical direction). When the extension 1C is excessively pressed down by the guide 5, it is pressed against the auxiliary guide surface 6F in a planar manner.

[0033] The restricting member 6 illustrated in this embodiment extends to a region where its vertical position overlaps with that of the suction arm 4, and is a flat plate shape with a notch or opening to avoid interference with the first arm 41 in the closed state of the suction arm 4. The material guiding device configured as described above is used to implement the material guiding method described below.

[0034] [3. Method] In the material guidance method, the guiding process is performed by the guide 5, the processing process is performed by the processing unit 4, the restricting process is performed by the restricting member 6, and the cutting process is performed by the cutter 7. In the processing step, an adsorption step is performed by the adsorption arm 4. In the adsorption step, a closing step is performed when the adsorption arm 4 is in the closed state, and an opening step is performed when the adsorption arm 4 is in the open state. In the guiding step, an aeration step is performed by the aeration device 5A and a clamping step is performed by the clamping device 5B. The following explanation of the material guidance method for sequentially implementing each of the above processes will be given with reference to Table 1 below.

[0035] [Table 1]

[0036] First, a guiding process is performed to press down the extension 1C hanging from the roll 3 in a downward direction from the NG direction D3 towards the vertical direction D2 along the vertical path 2C. In the guiding process, a non-contact gas spraying process is performed to press down on the extension portion 1C, and a clamping process is performed to press down on the curved portion 1B in contact. In the gas spraying process, gas is sprayed onto the extension portion 1C. In the clamping process, at the point where the supply direction of the material 1 changes from the horizontal direction D1 to the downward direction D2 of the vertical, the curved portion 1B is sandwiched between the outer surface 3F of the roll 3 along the corner path 2B, guiding the extension portion 1C to a position aligned with the vertical direction D2.

[0037] When the extension portion 1C is pressed to one side relative to the vertical path 2C by the guiding process, the deviation of the extension portion 1C to one side relative to the vertical path 2C is restricted by the regulating process. The region in which the deviation is restricted by this regulating process is the region below the roll 3 and at least the region above the part of the material 1 that is processed in the processing process. The processing step is initiated while the above-mentioned guiding or regulatory steps are being carried out.

[0038] In the material guidance method illustrated here, the adsorption process, which is illustrated as a processing step, is started during the guiding process and continues even after the guiding process is completed. The cutting process, on the other hand, is started during the guiding process and then completed. In the adsorption process, which is partially carried out in parallel with the guiding process as described above, the opening process is carried out after the closing process is performed.

[0039] The closing process involves clamping and holding the surface portions 11 and 12 of the extension portion 1C with suction. A portion of this closing process is carried out in parallel with the guiding process. The opening process is a process of separating the adsorbed surfaces 11 and 12 from each other. The opening process is performed after the closing process and after the guiding process has been completed. In other words, in the material guiding method of this embodiment, the guiding process is not performed during the opening process but in conjunction with the closing process. We will carry it out and implement it. Following the processing steps, various packaging processes are carried out (details omitted), and the packaged product is manufactured.

[0040] [4. Action and Effects] Since the material guiding device and material guiding method of this embodiment have the above-described configuration, the following functions and effects can be obtained. (1) According to the material guiding device of this embodiment, the extension portion 1C of the material 1 is held down by the guide 5, thereby guiding the supply direction of the extension portion 1C from the NG direction D3 to the downward direction of the vertical direction D2. By correcting the supply direction of the material 1 in this way, the extension portion 1C of the material 1 can be supplied along a preset vertical path 2C. Consequently, the processing for packaging by the processing unit 4 can be properly performed. Furthermore, when the resin film material supplied to the packaging equipment is changed to paper material 1, the packaging using paper material 1 can be properly manufactured simply by adding guide 5.

[0041] (2) With the spray device 5A included in the guide 5, the extension portion 1C, which is in an orientation along the NG direction D3 that deviates from the vertical path 1C, is held in place by the gas sprayed from the spray device 5A without contact. Therefore, the supply direction of the extension portion 1C can be guided while reliably suppressing the occurrence of wrinkles and twists. (3) Furthermore, with the clamping device 5B included in the guide 5, at the point where the supply direction of the material 1 changes from the horizontal direction D1 to the downward direction D2 of the vertical direction, the extension portion 1C is guided to a position along the vertical direction D2 with the curved portion 1B sandwiched between it and the outer surface 3F of the roll 3 along the corner path 2B. Therefore, the supply direction of the extension portion 1C can be reliably corrected.

[0042] (4) The suction arm 4 (suction arm 4 included in the processing unit 4), as exemplified by the processing unit 4, switches its operating state from a closed state in which it grips and holds the surfaces 11 and 12 of the extension unit 1C by suction, to an open state in which it separates the held surfaces 11 and 12 from each other. Since the extension unit 1C, including the surfaces 11 and 12 held by the suction arm 4, is guided in the supply direction by the guide 5 as described above, the packaging process of widening the opening of the gusset bag 10 can be reliably performed by the suction arm 4.

[0043] (5) If the extension portion 1C remains pressed down while the suction arm 4 is in the open position, the separation of the surfaces 11 and 12 in the open position will be hindered, which may lead to damage to the extension portion 1C. In contrast, the guide 5 can be switched between an ON state, which presses down on the extension portion 1C in the closed position, and an OFF state, which releases the pressure on the extension portion 1C in the open position. As a result, the surfaces 11 and 12 can be smoothly separated in the open position, and damage to the extension portion 1C can be suppressed.

[0044] (6) The auxiliary guide surface 6F of the regulating member 6, which is provided on one side with respect to the vertical path 2C, structurally restricts the deviation of the extension portion 1C. For example, even if the extension portion 1C is excessively pressed down by the guide 5, the extension portion 1C is pressed against the auxiliary guide surface 6F, preventing the extension portion 1C from being deviated to one side. From this point of view as well, the supply direction of the material 1 can be appropriately guided. (7) Furthermore, the material guiding method can also achieve the same functions and effects as the material guiding device.

[0045] [II. Variant Examples] The embodiments described above are merely illustrative, and there is no intention to exclude various modifications or applications of techniques not explicitly stated in these embodiments. Each configuration of these embodiments is provided within the scope of their intended purpose. It can be implemented in various modified forms. Furthermore, it can be selected and combined as needed.

[0046] The material guide device does not necessarily need to have a restrictive member, and may have a guide that maintains an ON state without being able to switch between an ON state and an OFF state. Such a material guide device allows for guidance of the material supply direction with a simple configuration. Furthermore, the spray device and clamping device exemplified as guides may be omitted, or a device that has the function of guiding the supply direction of the extension (for example, a different roll from the roll 3 described above) may be used instead of the spray device and clamping device.

[0047] As an example of a modified design, as shown in Figure 3, a material guiding device is provided in which only the spray device 5A is provided as the guide 5, and a regulating member 6 is also provided. With such a material guiding device, the supply direction of the extending portion of the material can be reliably guided (corrected) while suppressing the complexity of the configuration. Furthermore, the processing unit is not limited to the suction arm given as an example; various other units can be applied as long as they process the extension. For example, in one embodiment, a cutter for cutting the extension hanging from the roll along a vertical path may be provided as a processing unit in place of or in addition to the cutter described above. Furthermore, if the length of the extension hanging from the roll in the supply direction is sufficiently long, the self-weight acting on the extension becomes greater than the repulsive force due to the predetermined stiffness, so the extension is supplied along the vertical path without deviating from it.

[0048] [III. Addendum] The following additional information is disclosed regarding the embodiments described above. [Note 1] A material guiding device is provided in a packaging facility that guides the material in the supply direction of a strip-shaped paper material, wherein, in a predetermined supply path for the material, a roll having an outer peripheral surface extending along the supply path is provided at a point where the supply direction of the material changes from an upstream direction different from the vertical direction to a downward downstream direction along the vertical direction, and the extended portion of the material that extends downstream in the supply direction beyond the outer peripheral surface is suspended from the roll, the material guiding device for the supply direction of the material, A processing unit for performing packaging treatment on the extension that hangs down from the roll along the downstream direction, The extension portion is held in place from an orientation along the NG direction, which deviates from the downstream direction towards the upstream direction, to a direction toward the downstream direction, and includes a guide that guides the supply direction of the extension portion. A material guiding device characterized by the following features. [Note 2] The guide includes a gas blowing device that blows gas onto the extension to press it down without contact. The material guiding device described in Appendix 1, characterized by the features described herein. [Note 3] The guide includes a clamping device that, at the location, holds the material between itself and the outer surface along the supply path, guiding the extension to a position aligned with the downstream direction. A material guiding device as described in Appendix 1 or 2, characterized by the above. [Note 4] The material consists of gusseted bags arranged in a continuous line along the supply direction, each having a first and second surface section connected to each other via a folded gusset. The processing unit moves the first surface portion and the second surface portion of the extension portion from a closed state in which they are clamped and held by suction to a state in which the first surface portion and the second surface portion that are held by suction are separated from each other. Includes a suction arm that can be switched to an open state. A material guiding device as described in any one of the appendices 1 to 3, characterized by the above. [Note 5] The guide is switchable between an ON state, which holds down the extension in the closed state, and an OFF state, which releases the hold on the extension in the open state. The material guiding device described in Appendix 4, characterized by the features described herein. [Note 6] It has a planar auxiliary guide surface provided along the supply path on the side opposite to the side where the extension is located, which is vertically below the roll and vertically above the processing section, and which is oriented in the NG direction relative to the downstream direction, and is equipped with a regulating member that structurally restricts the deviation of the extension to the opposite side. A material guiding device as described in any one of the appendices 1 to 5, characterized by the above. [Note 7] In a packaging facility where a roll having an outer peripheral surface extending along the supply path is provided at a point in a predetermined supply path for a strip-shaped paper material where the supply direction of the material changes from an upstream direction different from the vertical direction to a downstream direction along the vertical direction, and an extended portion of the material that extends downstream in the supply direction beyond the outer peripheral surface is suspended from the roll, a material guiding method for guiding the supply direction of the material, A guiding step that holds the extension portion in a position along the NG direction, which deviates from the downstream direction to the upstream direction, and guides the supply direction of the extension portion, The process includes a processing step of applying a packaging treatment to the extension portion whose supply direction has been guided in the guiding step. A material guidance method characterized by the following. [Note 8] The guiding process includes a gas spraying process in which gas is blown onto the extension to press it down without contact. The material guidance method described in Appendix 7, characterized by the features described herein. [Note 9] The guiding process includes a clamping process in which the material is sandwiched between the outer surface and the supply path at the location, guiding the extension to a position aligned with the downstream direction. A material guidance method as described in Appendix 7 or 8, characterized by the features described herein. [Note 10] The material consists of gusseted bags arranged in a continuous line along the supply direction, each having a first and second surface section connected to each other via a folded gusset. The processing step includes a closing step in which the first surface portion and the second surface portion of the extension portion are clamped and held by suction, and an opening step in which the first surface portion and the second surface portion, which have been held by suction after the closing step, are separated from each other. A material guidance method described in any one of the appendices 7 to 9, characterized by the above. [Note 11] The aforementioned guiding process is not performed during the opening process, but is performed in parallel with the closing process. The material guidance method described in Appendix 10, characterized by the features described herein. [Note 12] The system includes a restricting step that restricts the deviation of the extension portion toward the side opposite to the side where the extension portion is located in a position aligned with the NG direction relative to the downstream direction, located vertically below the roll and vertically above the portion processed in the processing step. A material guidance method described in any one of the appendices 7 to 11, characterized by the above. [Explanation of Symbols]

[0049] 1. Materials 10 gusseted bags 11 First side 12 Second surface part 13 Machi 1A base 1B Curved section 1C Extension The downstream edge of the 1D surface portion 11, 12 Upstream portion of surface 11, 12 2. Supply routes 2A Horizontal path (upstream path) 2B Corner Route 2C Vertical path (downstream path) 3 rolls 3F outer surface 4. Suction Arm (Processing Unit) 41 First Arm 42 Second Arm 5 Guide 5A Spray device 5B Pincer 6 Regulating members 6F Auxiliary guide surface 7 Cutter D1 Horizontal direction (upstream direction) D2 Vertical direction (downstream direction) D3 NG direction F Taniori line

Claims

1. A material guiding device is provided in a packaging facility that guides the material in the supply direction of a strip-shaped paper material, wherein, in a predetermined supply path for the material, a roll having an outer peripheral surface extending along the supply path is provided at a point where the supply direction of the material changes from an upstream direction different from the vertical direction to a downward downstream direction along the vertical direction, and the extended portion of the material that extends downstream in the supply direction beyond the outer peripheral surface is suspended from the roll, the material guiding device for the supply direction of the material, A processing unit for performing packaging treatment on the extension that hangs down from the roll along the downstream direction, The extension portion is held in place from an orientation along the NG direction, which deviates from the downstream direction to the upstream direction, to a direction toward the downstream direction, and includes a guide that guides the supply direction of the extension portion, The material consists of gusseted bags arranged in a continuous line along the supply direction, each having a first and second surface section connected to each other via a folded gusset. The processing unit includes a suction arm that switches its operating state from a closed state in which it clamps and holds the first surface portion and the second surface portion of the extension portion to an open state in which it separates the first surface portion and the second surface portion that are held by suction from each other. The suction arm is positioned at a location where the extension, which hangs down by its own weight, is separated from the roll by a distance within the range that causes it to deviate from the supply path due to a predetermined stiffness of the material. The guide is switchable between an ON state, which holds the extension in the closed state, and an OFF state, which releases the hold on the extension in the open state. A material guiding device characterized by the following features.

2. The guide includes a gas blowing device that blows gas onto the extension to press it down without contact. The material guiding device according to feature 1.

3. The guide includes a clamping device that, at the location, holds the material between itself and the outer surface along the supply path, guiding the extension to a position aligned with the downstream direction. The material guiding device according to feature 1 or 2.

4. It has a planar auxiliary guide surface provided along the supply path on the side opposite to the side where the extension is located, which is vertically below the roll and vertically above the processing section, and which is oriented in the NG direction relative to the downstream direction, and is equipped with a regulating member that structurally restricts the deviation of the extension to the opposite side. A material guiding device according to any one of claims 1 to 3.

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