WO2017131025A1 - 粉粒体供給方法、これを用いた粉粒体含有物品の製造方法、粉粒体供給装置およびこれを有する粉粒体含有物品の製造装置 - Google Patents
粉粒体供給方法、これを用いた粉粒体含有物品の製造方法、粉粒体供給装置およびこれを有する粉粒体含有物品の製造装置 Download PDFInfo
- Publication number
- WO2017131025A1 WO2017131025A1 PCT/JP2017/002522 JP2017002522W WO2017131025A1 WO 2017131025 A1 WO2017131025 A1 WO 2017131025A1 JP 2017002522 W JP2017002522 W JP 2017002522W WO 2017131025 A1 WO2017131025 A1 WO 2017131025A1
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- WIPO (PCT)
- Prior art keywords
- opening
- sheet
- closing
- granular material
- closing means
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1026—Valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
- A61F2013/53908—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers with adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
Definitions
- the present invention relates to a method and apparatus for supplying a granular material to a sheet, and a method and apparatus for producing a granular material-containing article containing the granular material using the same.
- a powder-containing article containing a powder formed by supplying powder to a sheet may be used.
- a granular material-containing article containing a liquid-absorbing granular material may be used as an absorbent in a disposable diaper.
- Patent Document 1 As a method for supplying a granular material to a sheet, for example, a method described in Patent Document 1 is known.
- the granular material is dropped and supplied to the first sheet conveyed along the predetermined conveying path from the outlet of the granular material accommodating unit, whereby the granular material-containing article is supplied. Manufacture continuously. This granular material-containing article is then cut to a predetermined length. If the granular material is included at the cutting location, the granular material spills from the cutting location or the granular material is cut off at the time of cutting. May be damaged.
- the opening / closing means is rotationally driven by a motor, and the spray port is periodically closed by the opening / closing means, whereby the granular material is intermittently supplied to the surface of the first sheet. Thereby, the cutting
- the granular material-containing article containing the granular material it is necessary to change the length of each article after cutting the granular material-containing article according to the type of the object to which the granular material-containing article is applied. There is. On the other hand, it is desired to set the length of the region not having the powder particles (hereinafter sometimes referred to as a blank region) to an arbitrary length regardless of the length of each article. Yes.
- the opening / closing means can be opened / closed only during a period in which the opening / closing means makes a rotation, by increasing the rotational speed of the opening / closing means in comparison with other periods. If the rotational speed during one rotation of the means is changed, the length of the blank area can be set and changed independently regardless of the length of the holding area. In this case, the opening / closing means is driven. A load is applied to the motor. In particular, when the opening / closing means is driven at a high speed, the rotation speed of the opening / closing means must be frequently changed, and the load on the motor becomes excessive.
- the object of the present invention is to easily change the length of the area holding the powder body and the length of the area not having the powder body to appropriate values, respectively, in the powder-containing article. It is in providing the granular material supply method which can be performed, the manufacturing method of the granular material containing article using this, a granular material supply apparatus, and the manufacturing apparatus of the granular material containing article which has this.
- the present invention provides a powder supply method for supplying powder to a sheet being conveyed along a conveyance path, wherein the powder is supplied from a storage unit that stores the powder.
- a spraying step of dropping the granules and spraying them on the surface of the sheet through the spraying port, and moving the first opening / closing means so as to periodically overlap the spraying port as viewed from above in the vertical direction,
- the second opening / closing means is moved to periodically close the spray opening by the second opening / closing means, and when viewed from above in the vertical direction, the upstream edge of the first opening / closing means in the moving direction is the spray opening.
- a timing setting step for setting a difference between a timing at which the second opening / closing means overlaps the spraying port and a timing at which the first opening / closing means overlaps the spraying port as viewed from the viewpoint.
- this invention is a method of manufacturing the granular material containing article containing a granular material using the granular material supply method comprised as mentioned above, Comprising: The said timing setting process and conveying the said sheet
- the present invention is a granular material supply device that supplies granular material to a sheet conveyed along a conveying path, the accommodating unit accommodating the granular material, and the powder dropped from the accommodating unit
- a sprinkling port that allows particles to pass toward the front side of the sheet, and a first opening / closing unit and a second opening / closing unit each having a shape capable of closing the sprinkling port when viewed from above in the vertical direction;
- the first driving means moves the first opening / closing means so as to periodically overlap the spray port when viewed from above in the vertical direction
- the second driving means is configured to move the second opening / closing when viewed from above in the vertical direction.
- Means in the spout at the same cycle as the first opening and closing means The first opening / closing means overlaps at a timing later than the first opening / closing means, and the upstream side in the movement direction of the first opening / closing means during a period in which the upstream edge in the movement direction of the first opening / closing means overlaps the spray port.
- the second opening / closing means is moved so that the second opening / closing means extends from the edge of the head toward the upstream side in the moving direction, and the control means is configured to disperse the second opening / closing means as seen from above in the vertical direction.
- a granular material supply device characterized in that the deviation between the timing of overlapping the mouth and the timing of the first opening / closing means overlapping the spraying port can be changed.
- this invention is an apparatus which comprises the granular material supply apparatus comprised as mentioned above, and manufactures the granular material containing article containing a granular material, Comprising: The said sheet
- a production apparatus for a granular material-containing article comprising: a joining device that joins the sheet and the second sheet at a downstream position in the conveying direction.
- the present invention it is possible to easily set the holding area where the granular material is supplied and held in the powder-containing article and the blank area having no granular material individually to appropriate values. it can.
- FIG. 5 is a cross-sectional view taken along line VV in FIG. 4.
- FIG. 6 is a sectional view taken along line VI-VI in FIG. 5.
- A It is the figure which showed the state which the 1st opening-and-closing part has blocked the spraying opening.
- B It is a figure for demonstrating a motion of a 1st opening / closing part.
- FIG. 1 is a schematic diagram showing a manufacturing apparatus 1 for powder-containing article (hereinafter simply referred to as manufacturing apparatus 1) according to the first embodiment of the present invention.
- FIG. 2 is an enlarged view of a part of FIG. 1 and shows a structure inside a granular material spraying device 46 described later.
- the manufacturing apparatus 1 includes a first sheet conveying device (sheet conveying device) 10, a second sheet conveying device 20, a powder body supply device 40, a suction device 50, and a bending device 60.
- the manufacturing apparatus 1 supplies and holds the liquid-absorbent powder S to the first sheet (sheet) 201, and the second sheet 202 is laminated on the first sheet 201.
- the granular material-containing article 2 that has been bonded is manufactured will be described.
- the granular material-containing article 2 containing the liquid-absorbing granular material S is cut into a plurality of products at a plurality of locations. Examples of this product include an absorbent body of a disposable diaper.
- a non-woven sheet made up of a relatively bulky bulky layer 201b and a back layer 201a having a higher density is used as the first sheet 201, and a thin paper (tissue) is used as the second sheet 202. It is done. Further, as the granular material S, SAP (Super Absorbent Polymer) is used. As will be described later, the granular material S is supplied to the surface of the first sheet 201 and is held inside the bulky layer 201b.
- SAP Super Absorbent Polymer
- the first sheet conveying device 10 is a device for conveying the first sheet 201.
- the first sheet conveying apparatus 10 includes a belt conveyor 18 and a plurality of guide rolls 12 and 13.
- the first sheet conveying apparatus 10 conveys the first sheet 201 in the direction of the arrow Y1 in FIG. 1 along the conveying path when the belt conveyor 18 is driven by a motor or the like, and the first sheet 201 is a granular material.
- the feeding device 40, the second adhesive application device 84, the bending device 60, and the pressure welding device 70 are fed in this order.
- the second sheet conveying device 20 is a device for conveying the second sheet 202.
- the second sheet conveying device 20 conveys the second sheet 202 toward the surface of the first sheet 201 in the middle of conveyance as indicated by an arrow Y2 in FIG.
- the second sheet conveying device 20 includes a motor (not shown) for feeding the second sheet 202 and a plurality of guide rolls 21 and 22 for guiding the second sheet 202 to the surface of the first sheet 201.
- One guide roll 21 functions as a second sheet supply unit that supplies the second sheet 202 to the surface of the first sheet 201. That is, the guide roll 21 is positioned near the surface of the first sheet 201, and the second sheet 202 is guided onto the surface of the first sheet 201 by the guide roll 21.
- the guide roll 21 is a spout 48c (to be described later) of the granular material supply device 40 and is located immediately downstream of the position facing the portion that supplies the granular material S to the first sheet 201 (first sheet). 201 in the conveyance direction Y1 of 201). Accordingly, the guide roll 21 is disposed on the surface of the first sheet 201 at a position immediately downstream of the position where the powder S is supplied to the first sheet 201 (in the conveyance direction Y1 of the first sheet 201). 202 is supplied, and the surface of the first sheet 201 is covered with the second sheet 202.
- the first adhesive application device 82 is disposed at a position upstream of the guide roll 21 in the conveyance direction of the second sheet 202 in the conveyance path of the second sheet 202. In the present embodiment, the first adhesive application device 82 is disposed at a position immediately upstream of the guide roll 21.
- the powder body supply device 40 is a device that intermittently supplies the powder body S toward the surface of the first sheet 201. Although details of the granular material supply device 40 will be described later, the granular material supply device 40 drops the granular material S from the upper side of the first sheet 201 onto the surface of the first sheet 201 through the spray port 48c (see FIG. 4).
- the suction device 50 is a device for sucking the first sheet 201 on the belt conveyor 18 from the back side.
- the suction device 50 includes a suction passage 51 in which a suction port 51 a is formed, and a suction pump 52 connected to the suction passage 51. Aspirate the air.
- the suction port 51a is disposed in the vicinity of the position facing the spray port 48c.
- the suction port 51a extends from a position directly below the spray port 48c to a position downstream of the spray port 48c in the transport direction Y1 of the first sheet 201, and passes through this portion.
- the back surface of 201 is sucked.
- the suction port 51a is disposed on the back side of the conveyor belt 18a, and sucks the first sheet 201 from the back side through a plurality of air holes formed in the conveyor belt 18a.
- the first adhesive application device 82 is a device that applies an adhesive to the second sheet 202.
- the first adhesive application device 82 applies a hot melt adhesive to the second sheet 202.
- the first adhesive application device 82 is disposed at a position on the upstream side of the guide roll 21 in the conveyance path of the second sheet 202, and the second adhesive before being supplied to the surface of the first sheet 201.
- An adhesive is applied to the surface of the sheet 202.
- the first sheet 201 is covered with the second sheet 202 to which the adhesive is applied by the guide roll 21, and when this is applied, the first sheet 201 and the second sheet 202 are bonded to each other. Are joined together.
- the guide roll 21 functions as a second sheet supply unit that supplies the second sheet 202 to the surface of the first sheet 201 and joins the sheets 201 and 202 together with an adhesive. It also functions as a joining device.
- the guide roll 21 is configured to press-contact the sheets 201 and 202 joined together in the thickness direction. Therefore, the first sheet 201 and the second sheet 202 are joined by the guide roll 21 while being pressed in the thickness direction thereof.
- the second adhesive application device 84 is located downstream of the guide roll 21 in the conveyance direction of the first sheet 201.
- the second adhesive application device 84 is an apparatus that applies an adhesive to a part of the second sheet 202 that protrudes outward from the first sheet 201.
- the second adhesive application device 84 applies a hot melt adhesive to the second sheet 202.
- the second sheet 202 is a sheet wider than the first sheet 201. Therefore, in a state where the second sheet 202 is supplied and joined to the surface of the first sheet 201 by the guide roll 21, the second sheet 202 protrudes outside the first sheet 201 in the width direction. In the present embodiment, both end portions in the width direction of the second sheet 202 protrude outward from the first sheet 201, and the second adhesive application device 84 has both ends in the width direction of the second sheet 202. Apply adhesive to the area.
- the folding device 60 is a device that bends the second sheet 202 so that the second sheet 202 wraps the first sheet 201. Specifically, the bending device 60 wraps both end portions in the width direction of the second sheet 202 around the back side of the first sheet 201 and bends along the back surface.
- the bending device 60 is located on the downstream side of the second adhesive application device 84 in the conveyance direction of the first sheet 201. In the present embodiment, the bending device 60 is disposed immediately downstream of the second adhesive application device 84.
- both ends in the width direction of the second sheet 202 to which the adhesive is applied by the second adhesive application device 84 are joined to the back surface of the first sheet 201 by being bent by the bending device 60.
- the bending device 60 also functions as a joining device that joins the first sheet 201 and the second sheet 202 together with an adhesive.
- the pressure welding apparatus 70 is an apparatus for pressure-contacting the 1st sheet
- the pressure welding device 70 includes a pair of rollers 72 and 72, and the first sheet 201 and the second sheet 202 pass between the rollers 72 and 72 so as to be pressure-contacted in the thickness direction.
- the powder / particle supply device 40 includes a powder / particle storage device 42, a metering device 44, a powder / particle distribution device 46, and a control device 49 (see FIG. 6).
- the granular material spraying device 46 includes a granular material guiding portion 47 and an opening / closing device 48 having a casing 48a having a relatively wide space inside.
- FIG. 4 is an enlarged view of a part of FIG. 5 is a cross-sectional view taken along line VV in FIG. 6 is a cross-sectional view taken along line VI-VI in FIG.
- the granular material storage device 42 is a part that stores the granular material S inside, as shown in FIGS.
- the granular material storage apparatus 42 is provided with two tanks 42a and 42b which store the granular material S, respectively. Openings for dropping the granular material S toward the metering device 44 are formed on the lower surfaces of the two tanks 42a and 42b, respectively, and the granular material S enters the metering device 44 through the openings. Supplied.
- the metering device 44 is a device that supplies the granular material S supplied from the tanks 42a and 42b to the granular material spraying device 46 while metering.
- the metering device 44 continuously conveys the powder S supplied from the tanks 42a and 42b downward at a predetermined flow rate.
- the conveyed granular material S flows down from a discharge part 44 a provided at the lower part of the metering device 44.
- the granular material guide part 47 is a part that guides the granular material S that has fallen downward from the discharge part 44a of the metering device 44 downward.
- the granular material guide part 47 is a cylindrical member extending in the vertical direction, and a space communicating with the discharge part 44a is formed inside.
- the granular material S that has fallen from the discharge unit 44a of the metering device 44 flows downward through the granular material guide 47 through a granular material supply port 47a formed at the lower end of the granular material guide 47. .
- the granular material storage device 42 and the metering device 44 function as an accommodating portion that accommodates the granular material S, and from this, the granular material S and the granular material guide 47 It falls through the granular material supply port 47a.
- the lower end portion of the granular material guide portion 47 in which the granular material supply port 47a is formed is inserted from the upper surface of the housing 48a toward the inside of the housing 48a.
- the granular material S dropped from the supply port 47a flows into the housing 48a.
- a spraying port 48c penetrating up and down the lower surface is formed at a position facing the powder supply port 47a.
- the spray port 48c is disposed at a position that is spaced downward from the granular material supply port 47a in the vertical direction and at a position that substantially overlaps with the granular material supply port 47a when viewed along the vertical direction. .
- the granular material S discharged from the granular material supply port 47a falls toward the spray port 48c.
- the belt conveyor 18 is disposed below the spraying port 48c, and the granular material S falling toward the spraying port 48c is supplied to the surface of the first sheet 201 on the belt conveyor 18 through the spraying port 48c. .
- the spray port 48c is orthogonal to the width direction of the first sheet 201, that is, the conveyance direction Y1 of the first sheet 201.
- the first opening 201 has a rectangular shape extending in a direction parallel to the surface of the first sheet 201, and is located downstream of the conveyance direction Y1 of the first sheet 201 and extends parallel to the width direction of the first sheet 201.
- An edge 48c_1 and a second opening edge 48c_2 that is located on the upstream side in the conveyance direction Y1 of the first sheet 201 and extends in parallel with the width direction of the first sheet 201 are included.
- a portion of the conveyor belt 18 a on which the first sheet 201 is placed has a downstream end in the conveyance direction Y ⁇ b> 1 of the first sheet 201 below a portion that becomes the upstream end. It is arranged to be located in. Accordingly, the first sheet 201 receives the supply of the granular material S from above while being conveyed obliquely downward with respect to the vertical direction at a position facing the spraying port 48c. As described above, in the present embodiment, the first sheet 201 and the granular material S move downward in the vertical direction.
- the lower surface of the casing 48 a extends in parallel with the surface of the first sheet 201 on the belt conveyor 18.
- the lower surface of the casing 48 a is disposed at a position close to the surface of the first sheet 201 on the belt conveyor 18, and the spray port 48 c is close to the surface of the first sheet 201. Therefore, the granular material S dropped from the spray port 48c is efficiently supplied to the first sheet 201.
- the metering device 44 continuously conveys the granular material S downward, and the granular material S continuously moves from the granular material supply port 47a toward the spraying port 48c. Fall.
- the shutter device 110, 120 first shutter device 110, second shutter device 120 provided in the opening / closing device 48 is intermittently restricted from reaching the spray port 48c.
- the granular material S is intermittently supplied to the first sheet 201.
- the first shutter device 110 and the second shutter device 120 are respectively provided on one side and the other side in the longitudinal direction of the spray port 48c with the spray port 48c interposed therebetween.
- the width direction of the first sheet 201 passing through the lower side of the spray port 48c that is, the longitudinal direction of the spray port 48c, that is, the left-right direction in FIGS.
- the side on which the first shutter device 110 is disposed will be described as the left side
- the side on which the second shutter device 120 is disposed will be described as the right side.
- FIGS. 7A and 7B are diagrams for explaining the detailed structure of the shutter plate 112, and shows the inside of the housing 48a in a state where the second shutter device 120 and the like are omitted. It is. 7A and 7B are views seen from a direction orthogonal to the lower surface of the casing 48a.
- the first shutter device 110 includes a shutter plate 112, a pair of link members 114 and 114 connected to the shutter plate 112, an output shaft portion 116 connected to the link members 114 and 114 via a belt 115, and an output. And a motor (first driving means) 117 that rotationally drives the shaft portion 116.
- the shutter plate 112 is a plate-like member.
- the shutter plate 112 includes a first opening / closing portion (first opening / closing means) 112a extending in the left-right direction, and a direction perpendicular to the left-right direction (the width direction of the first opening / closing portion 112a) from the left end of the first opening / closing portion 112a. And a connecting portion 112b extending.
- the shutter plate 112 extends parallel to the lower surface of the housing 48a.
- the first opening / closing portion 112a is positioned above the spraying port 48c and overlaps the entire spraying port 48c when viewed from above in the vertical direction.
- the entire mouth 48c is closed from above.
- the one side edge 112a_1 and the other side edge 112a_2 in the width direction of the first opening / closing part 112a extend straight in the left-right direction.
- the link members 114, 114 are arranged on the left side of the spray port 48c in a direction parallel to the width direction of the spray port 48c.
- Each of the link members 114 and 114 includes a cylindrical shaft portion 114a and 114a extending in the vertical direction, and a link plate 114b extending from the outer peripheral surface of each shaft portion 114a and 114a to the outside in the radial direction of the shaft portions 114a and 114a. 114b.
- the shaft portions 114a and 114a extend in a direction perpendicular to the lower surface of the casing 48a, and the link plates 114b and 114b extend in parallel to the lower surface of the casing 48a.
- Each shaft portion 114a, 114a is fixed to the casing 48a so as to rotate around its center line, and each link plate 114b, 114b has a base end portion, which is one end portion, attached to each shaft portion 114a, 114a. It is fixed so as to rotate together.
- the shutter plate 112 is rotatably connected to a tip portion which is the other end portion of each link plate 114b, 114b. Specifically, both ends in the longitudinal direction of the connecting portion 112b of the shutter plate 112 are connected to the tip portions of the link plates 114b and 114b, respectively.
- the output shaft portion 116 is a columnar member extending in parallel with the shaft portions 114a and 114a of the link members 114 and 114, and is driven by the motor 117 and rotates around its center line as described above.
- the output shaft portion 116 and the shaft portions 114 a and 114 a of the link members 114 and 114 are connected via the belt 15.
- the link members 114 and 114 are connected.
- the shaft portions 114a and 114a also rotate around the center line in synchronization with each other.
- the shutter plate 112 moves from the state shown in FIG. 7A to the state shown in FIG. 7B as the link plates 114b and 114b rotate.
- the first opening / closing part 112a rotates while maintaining a posture extending in the left-right direction.
- the two link members 114 and 114 and the shutter plate 112 constitute a four-bar link mechanism.
- the shutter plate 112 rotates along a trajectory above the spray port 48c in a state where the first opening / closing portion 112a maintains a posture extending in the left-right direction on a surface parallel to the lower surface of the housing 48a.
- the shutter plate 112 has its first opening / closing portion 112a periodically overlapped with the spray port 48c to block the entire spray port 48c when viewed from above in the vertical direction.
- the first opening / closing portion 112a periodically closes the spray port 48c as the shutter plate 112 rotates.
- the spray port 48c When the spray port 48c is blocked by the first opening / closing part 112a, the powder S that has fallen from the powder supply port 47a toward the spray port 48c is rebounded by the first opening / closing part 112a, and enters the spray port 48c. It does not reach and is received by the lower surface of the casing 48a, whereby supply of the granular material S to the first sheet 201 is stopped.
- the direction in which the shutter plate 112 moves above the spray port 48c is set to the same direction as the direction in which the first sheet 201 indicated by the arrow Y1 is conveyed,
- the first opening / closing unit 112a closes the spray port 48c from the upstream side in the conveyance direction Y1 of the first sheet 201 toward the downstream side. Further, the first opening / closing part 112a moves obliquely downward in the vertical direction above the spray port 48c.
- the moving direction of the shutter plate 112 is not specified.
- the first opening / closing portion 112a is moved obliquely downward in this manner, the resistance to the fall of the powder S is reduced, and the movement within the casing 48a is reduced. It is preferable because scattering of the powder S can be suppressed.
- FIG. 8 is a view showing the inside of the casing 48a.
- the second shutter device 120 has substantially the same structure as the first shutter device 110.
- 9 and 10 corresponding to FIGS. 8 and 8 are also viewed from a direction perpendicular to the lower surface of the casing 48a, as in FIGS. 7A and 7B. Is shown.
- the second shutter device 120 includes a shutter plate 122 including a second opening / closing portion 122a and a connecting portion 122b, and a shaft plate 124a and a link plate 124b.
- second drive means that rotationally drives the output shaft portion 126
- the second opening / closing portion 122a rotates and moves on a plane parallel to the lower surface of the casing 48a while maintaining a posture extending in the left-right direction, and is viewed from above in the vertical direction.
- the spray port 48c is periodically overlapped with the spray port 48c so that the entire spray port 48c can be closed.
- the one side edge 122a_1 and the other side edge 122a_2 in the width direction of the second opening / closing part 122a extend in the left-right direction.
- the second shutter device 120 is configured symmetrically with the first shutter device 110.
- the shutter plate 122 of the second shutter device 120 rotates in the opposite direction to the first shutter device 110. Accordingly, in the second shutter device 120 as well, in the same way as the first shutter device 110, the second opening / closing part 122a of the shutter plate 122 moves the spray port 48c from the upstream side to the downstream side in the conveyance direction Y1 of the first sheet 201. I will close it up.
- Control Device 49 controls the motor 117 of the first shutter device 110 and the motor 127 of the second shutter device 120.
- the motor 49 of the first shutter device 110 and the motor 127 of the second shutter device 120 are both set to have a constant rotation speed by the control device 49 and have the same rotation cycle. Is set to Accordingly, the rotation speeds of the opening / closing parts 112a and 122a of the shutter devices 110 and 120 are the same, and these opening / closing parts 112a and 122a overlap the spraying port 48c and block the same at the same cycle.
- the shutter plate 122 of the second shutter device 120 is disposed so as to pass above the spray port 48c at a position below the shutter plate 112 of the first shutter device 110. .
- the control device 49 further sets and changes the phase of the motor 117 of the first shutter device 110 and the phase of the motor 127 of the second shutter device 120, respectively.
- the control device 49 is electrically connected to the motors 117 and 127 and includes an input unit, and the rotation of the motors 117 and 127 based on the value input to the input unit. Set or change the start timing.
- the rotation start timings of these motors 117 and 127 are changed, the shift amount of the timing at which the first opening / closing part 112a and the second opening / closing part 122a overlap with the spray port 48c is changed.
- Each of the motors 117 and 127 is provided with sensors 130 and 130 for detecting the rotational position, that is, the phase, and the deviation amount is adjusted to a predetermined amount based on the detection results of the sensors 130 and 130. .
- the timing at which the opening / closing parts 112a, 122a overlap the spraying port refers to the start or end of the period in which the opening / closing units 112a, 122a overlap the spraying port 48c. Specifically, when the downstream edge 112a_1, 122a_1 in the moving direction of the opening / closing parts 112a, 122a overlaps with the opening edge 48c_2 on the upstream side in the moving direction of the opening / closing parts 112a, 122a in the opening edge of the spray port 48c.
- the timing at which the opening / closing portions 112a and 122a overlap the spraying port is one of these.
- the “deviation” of the timing is a timing at which the downstream edges 112a_1 and 122a_1 of the opening and closing portions 112a and 122a overlap the upstream opening edge 48c_2 of the spray port 48c in the moving direction of the opening and closing portions 112a and 122a, respectively.
- the timing at which the opening / closing parts 112a and 122a overlap the spray port 48c by the control device 49 is set as follows.
- FIGS. 9 and 10 are views corresponding to FIG. 8 and show a state where the first opening / closing part 112a and the second opening / closing part 122a overlap the spraying port 48c. The time elapses in the order of FIG.
- the second opening / closing part 122a starts passing above the spraying port 48c below the first opening / closing part 112a and spreads.
- the timing is set so as to overlap with 48c.
- the upstream edge 112a_2 in the rotational direction of the first opening / closing portion 112a overlaps the spray port 48c.
- the motors 117 and 127 and the opening and closing portions 112a and 122a are controlled so that the second opening and closing portion 122a extends from 112a_2 toward the upstream side in the rotation direction of the first opening and closing portion 112a. That is, when the upstream edge 112a_2 of the first opening / closing portion 112a passes above the second opening edge 48c_2 of the spray port 48c, or before this, the rotation direction of the second opening / closing portion 122a is changed.
- the downstream edge 112a_1 in the rotational direction of the first opening / closing part 112a passes above the first opening edge 48c_1 of the spray port 48c and then the upstream side in the rotational direction of the second opening / closing part 122a.
- the spray port 48c is continuously closed by these open / close portions 112a, 122a, and each open / close portion 112a, 122a is independently provided.
- Supply of the granular material S to the first sheet 201 is stopped for a longer period than when the spraying port 48c is closed.
- FIGS. 8, 9 and 10 are views as seen from the direction orthogonal to the lower surface of the casing 48a inclined with respect to the vertical direction. As shown in these drawings, the opening / closing portion 122a overlaps with each other and closes the spray port 48c as seen from above in the vertical direction.
- the supply of the powder S to the first sheet 201 is continuously stopped by the first opening / closing part 112a and the second opening / closing part 122a, and as shown in FIG.
- the blank area X1 in which the powder S is not supplied and does not have the powder S and the holding area X2 in which the powder S is supplied and held are alternately formed.
- the first opening / closing portion 112a and the second opening / closing portion 122a rotate while maintaining a posture extending in the left-right direction, and the edge 112a_1 on the downstream side of the rotation direction of the first opening / closing portion 112a.
- the edge 122a_2 on the upstream side in the rotational direction of the second opening / closing part 122a move above the spray port 48c in a state of extending in the left-right direction. Therefore, as shown in FIG. 11, the boundary line between the blank area X ⁇ b> 1 and the holding area X ⁇ b> 2 is a line extending in a direction orthogonal to the conveyance direction of the first sheet 201.
- the first opening edge 48c_1 and the second opening edge 48c_2 of the spray port 48c extend in parallel with the width direction of the first sheet 201, respectively. Therefore, the spray port 48c is evenly closed in the width direction of the first sheet 201 when passing through the first opening / closing part 112a, and the width of the first sheet 201 when the second opening / closing part 122a passes. It will be opened equally in the direction. Therefore, for example, when the granular material S is evenly supplied from the spray port 48c to the first sheet 201 in the width direction of the first sheet 201, the first opening / closing portion 112a starts to close the spray port 48c.
- the granular material S is uniformly supplied to the 1 sheet 201 about the width direction.
- each opening-and-closing part 112a, 122a overlaps with the spraying port 48c is changed by the control apparatus 49, the amount which each opening-and-closing part 112a, 122a overlaps above the spraying port 48c will be changed.
- the time during which the spray port 48c is continuously blocked by the opening / closing sections 112a and 122a is changed, and the length L10 of the blank area X1 (the length in the transport direction Y1 of the first sheet 201) is changed. Is done.
- the timing at which the second opening / closing part 122a overlaps with the spray port 48c is advanced, the amount by which the first opening / closing part 112a and the second opening / closing part 122a overlap in the moving direction increases, and the opening / closing parts 112a, 122a continuously.
- the period during which the spray port 48c is blocked becomes shorter. Therefore, in this case, the length L10 of the region X1 in the first sheet 201 where the granular material S is not supplied is shortened.
- the length L30 of the region X3, which is the sum of the blank region X1 and the holding region X2, is determined by the period of each of the opening / closing parts 112a and 122a. Accordingly, by changing the timing while the period is set to a predetermined value, the length L10 of the blank area X1 is set and changed separately from the length L30 of the area X3. Therefore, the length L20 of the holding area X2 obtained by subtracting the length L10 of the blank area X1 from the length L30 of the area X3 and the length L10 of the blank area X1 can be individually set and changed.
- the blank area X1 and the holding area X2 are set by setting the period of each of the opening / closing sections 112a and 122a, that is, the movement time per rotation to a predetermined value with respect to the conveyance speed of the first sheet 201.
- the length L30 of the region X3 combined with is set to a predetermined value. Therefore, in order to change the length L30, that is, the length L30 of the product formed by cutting the granular material-containing article 2 in the blank region X1 (hereinafter, also referred to as product length) L30, What is necessary is just to change the period of the parts 112a and 122a.
- the ratio of the length L10 of the blank area X1 to the product length L30 is fixed to a predetermined value. Therefore, in this case, for example, when the product length L30 is increased, the length L10 of the blank area X1 is also increased.
- the period of the product length L30 is set to a predetermined value by changing the timing while setting the cycle of the open / close sections 112a and 122a to a predetermined value to set the length of the product length L30 to a predetermined value.
- the length L10 of the blank area X1 can be changed while maintaining the above. Accordingly, the length L20 of the holding region X2 can be set and changed separately from the product length L30.
- the blank area X1 only needs to have a length that allows cutting in the area X1, and is excessively long. do not have to.
- the timing is set to a relatively small value, so that the product length L30 is set to a desired value and the blank area is set. The length L10 of X1 can be reduced.
- seat 201 through the spraying port 48c is carried out. carry out.
- the first opening / closing portion 112a is rotated so as to periodically overlap the spraying port 48c when viewed from above in the vertical direction, and the first opening / closing portion 112a periodically closes the spraying port 48c.
- the second opening / closing portion 122a is rotated so as to overlap the spray port 48c when viewed from above in the vertical direction at the same timing as the first opening / closing portion 112a and later than the first opening / closing portion 112a.
- a second closing step of periodically closing the spray port 48c by the opening / closing part 122a is performed.
- the upstream side 112a_2 in the rotational direction of the first opening / closing part 112a overlaps the spray port 48c, and the upstream side in the rotational direction of the first opening / closing part 112a.
- the second opening / closing part 122a is rotated such that the second opening / closing part 122a extends from the edge 112a_2 toward the upstream side in the rotation direction.
- the 2nd opening-and-closing part 122a is made to pass the spraying port 48c in the position below the 1st opening-and-closing part 112a.
- the period of the 1st opening / closing part 112a and the 2nd opening / closing part 122a at this time is preset to an appropriate value according to the conveyance speed of the first sheet 201 and the product length L30.
- the length L10 of the blank area X1 is a predetermined value as to the deviation between the timing at which the second opening / closing portion 122a overlaps the spray port 48c and the timing at which the first opening / closing portion 112a overlaps the spray port 48c as viewed from above in the vertical direction.
- the timing setting process is performed so that
- the granular material S is intermittently supplied to the first sheet 201 at a predetermined interval, and a blank area X1 and a holding area X2 having a predetermined length are formed.
- timing setting step the difference between the timing at which the second opening / closing portion 122a overlaps the spray port 48c and the timing at which the first opening / closing portion 112a overlaps the spray port 48c as viewed from above in the vertical direction is set (timing setting step).
- the first sheet 201 is transported along the transport path at a predetermined transport speed (transport process A1).
- the first sheet 201 is conveyed by the first sheet conveying apparatus 10.
- a predetermined amount of the granular material S is intermittently supplied to the surface of the first sheet 201.
- the spraying step, the first closing step, and the second closing step are performed, and the powder S is intermittently supplied to the first sheet 201 (powder supplying step A2). ).
- the first sheet 201 is sucked from the back side by the suction device 50 at this time.
- the second sheet 202 is supplied to the surface of the first sheet 201 after the granular material S is supplied by the guide roll 21 (second sheet supply step A3).
- the guide roll 21 of the second sheet conveying device 20 is located on the downstream side of the position facing the spray port 48c, and the granular material S is supplied to the first sheet 201.
- the second sheet 202 is supplied to the surface of the first sheet 201.
- the first sheet 201 and the second sheet 202 are They are joined to each other while being pressed in the thickness direction (first joining step A3, joining step).
- the joined first sheet 201 and second sheet 202 are pressed in the thickness direction by the pressure welding device 70 to produce the powder-containing article 2 containing the liquid-absorbing powder S. .
- the granular material containing article 2 is cut
- absorbers such as a diaper.
- the granular material-containing article 2 in which the granular material S is intermittently arranged between the first sheet 201 and the second sheet 202 is manufactured.
- the deviation between the timing at which the second opening / closing part 122a overlaps the spraying port 48c and the timing at which the first opening / closing part 112a overlaps the spraying port 48c is changed and set to a predetermined value.
- L30 and the length L10 of the blank area X1 are each easily changed to an appropriate value, and the granule-containing article 2 in which the product length L30 and the length L10 of the blank area are appropriately set is manufactured. .
- the first opening / closing part 112a and the second opening / closing part 122a are each dispersed in the same cycle.
- the second opening / closing portion 122a is closed at a timing later than the first opening / closing portion 112a, and the first opening / closing portion 112a is rotated in the rotational direction.
- the upstream edge 112a_2 overlaps the spray port 48c, the second opening / closing part 122a extends from the edge 112a_2 toward the upstream side in the rotation direction of the first opening / closing part 112a when viewed from above in the vertical direction.
- the second opening / closing part 122a is rotationally driven.
- the timing at which the first opening / closing part 112a overlaps with the spraying port 48c and the timing at which the second opening / closing part 122a overlaps with the spraying port 48c are changed to appropriate values by the control device 49.
- the length L10 of the region X1 can be changed independently, and the lengths L10 and L30 can be changed to more appropriate values.
- the length L10 of the blank area X1 can be easily changed without greatly changing the rotational speed of the first opening / closing part 112a and the second opening / closing part 122a during one cycle. , 127 can be kept small.
- the 2nd opening-and-closing part 122a has plugged the spraying port 48c in the position below the 1st opening-and-closing part 112a.
- the granular material S that could not be controlled to fall to the spray port 48c by the first opening / closing portion 112a can be reliably received by the second opening / closing portion 122a and controlled to drop to the spray port 48c.
- the spreading port 48c is made into the rectangle extended in the direction parallel to the width direction of the 1st sheet
- the edge 112a_1 on the downstream side in the direction and the edge 122a_2 on the upstream side in the moving direction of the second opening / closing part 122a are rotationally driven so as to overlap the spraying port 48c in a posture extending in the width direction of the first sheet 201.
- the boundary between the holding area X2 and the blank area X1 in the first sheet 201 can be a line extending in a direction orthogonal to the conveyance direction of the first sheet 201.
- the blank region X1 can be accurately cut in the width direction.
- the second opening / closing section may be any one that can periodically open the spout 48c, and its specific configuration is not limited thereto.
- the opening / closing device 548 of the second embodiment shown in FIGS. 12, 13, and 14 may be used.
- the opening / closing device 548 also includes a first shutter device 510 and a second shutter device 520 provided inside the casing 48a.
- the first opening / closing portion 512a of the first shutter device 510 and the second opening / closing portion 522a of the second shutter device 520 are parallel to the lower surface 548a_1 of the housing 548a in which the spray port 48c is formed. Rotate around the extending axis.
- the first shutter device 510 has a pair of cylindrical support portions 514 and 514 centered on an axis extending in a direction parallel to the width direction of the first sheet 201. These support portions 514 and 514 are disposed at positions separated from each other in the direction parallel to the width direction of the first sheet 201.
- the first opening / closing part 512a extends between the support parts 514 and 514 and connects the support parts 514 and 514 to each other.
- the support portions 514 and 514 and the first opening / closing portion 512a are configured to rotate around the central axis of the support portion 524 by the motor 517. With this rotation, as shown in FIG.
- the part 512a periodically passes above the spray port 548c and opens and closes the spray port 548c.
- the second shutter device 520 also has a pair of support portions 524 and 524 and a second opening / closing portion 522a that connects the support portions 524 and 524 with the same configuration.
- the second opening / closing part 522a periodically passes above the spraying port 548c and opens / closes the spraying port 548c by being rotationally driven by the motor 527.
- the support portions 524 and 524 and the second opening / closing portion 522a of the second shutter device 520 are located on the radially outer side of the support portions 514 and 514 and the first opening / closing portion 512a of the first shutter device 510.
- the motors 517 and 527 are configured to rotate the first shutter device 510 and the second shutter device 520 around the same axis in the same direction and in the same cycle. Also in the second embodiment, similarly to the first embodiment, the control device 49 can change the phase of the motors 517 and 527 and the shift amount of the timing at which the opening / closing portions 512a and 522a block the spraying port 548c. It is like that.
- the first opening / closing portion 512a and the second opening / closing portion 522a are shifted in phase in the rotational direction of the first opening / closing portion 512a.
- the second opening / closing part 522a rotates so as to extend from the edge 512a_2 toward the upstream side in the rotation direction of the first opening / closing part 512a. Then, by changing the phase shift, the length L10 and the product length L30 of the blank area X1 can be easily changed to appropriate values individually.
- the granular material guide portion 547 is extended to the upper side of the spraying port 548 c through the radial inner portions of the support portions 514 and 524 of the shutter devices 510 and 520,
- the opening / closing sections 512a and 522a are arranged so as to rotate around the powder supply port 547a formed at the lower end of the powder guide 547.
- the guide roll 21 of the second sheet conveying apparatus 20 that supplies the second sheet 202 to the surface of the first sheet 201 is the spout 48c and the first sheet 201 is provided.
- seat 201) from the part to which the granular material S is supplied was demonstrated, it replaced with this and expanded a part of FIG. 15 and FIG. You may arrange
- one guide roll 721 of the guide rolls 721 and 722 of the second sheet conveying apparatus 20 that supplies the second sheet 202 to the surface of the first sheet 201 is the spout 48c. Is disposed at a position where the granular material S is supplied to the first sheet 201.
- the first sheet 201 is conveyed obliquely downward. Accordingly, the supply position at which the guide roll 721 supplies the second sheet 202 to the surface of the first sheet 201 is upstream in the conveyance direction of the first sheet 201 from the lower position in the vertical direction of the axial center of the guide roll 721. It is a position close to the side and opened upward in the vertical direction.
- the spray port 48c is disposed so as to face above the supply position in the vertical direction. Therefore, in the third embodiment, the position where the powder S is supplied to the first sheet 201 coincides with the supply position where the second sheet 202 is supplied to the first sheet 201.
- the first adhesive applicator 781 is installed upstream of the guide roll 721 in the transport direction of the second sheet 202 as in the first embodiment, the first sheet is also provided.
- the guide roll 721 is configured to press-contact the first sheet 201 and the second sheet 202 in the thickness direction.
- the suction passage 51 extends downstream from the portion where the granular material S is supplied to the first sheet 201 below the spout 48c. The region from the position where the granular material S is supplied to the downstream position is sucked.
- the second adhesive application device 782, the bending device 785, and the pressure welding device 70 are provided, and the second sheet 201 and the second sheet 202 are further joined by them, and It is pressed in the thickness direction.
- the shutter plates 112 and 122 are formed in an L shape, but may have other shapes. For example, it is good also as an I-shape provided with the connection part extended in the left-right direction in one side of an opening / closing part.
- the edges in the width direction of the opening / closing sections 112a and 122a are both linear along the direction orthogonal to the conveying direction of the sheet 201. However, these edges are wave-shaped or mountain-shaped. Other shapes such as a concave shape may be used. Further, these edges do not necessarily have to be along a direction orthogonal to the sheet conveyance direction, and may have a shape extending in a direction inclined with respect to the conveyance direction.
- the widths of the first opening / closing part 112a and the second opening / closing part 122a have the same dimensions.
- the width of each opening / closing part may be different from each other. In this case, by rotating only one of them, the length of the blank area can be made different from that when only the other is rotated.
- first opening / closing means 112a and the second opening / closing means 122a are rotated and moved by the motors 117 and 127, respectively.
- each of the opening / closing means may be configured to reciprocate by a driving means (motor or the like) via a link mechanism.
- the driving means (motor) for rotating the shutter plate does not necessarily need to rotate the shutter plate at a constant speed, and the speed may be varied during one cycle as long as the motor is not overloaded. That is, for example, in the first embodiment, the motors 117 and 127 are excessively increased while changing the difference between the timing at which the first opening / closing portion 112a overlaps the spray port 48c and the timing at which the second opening / closing portion 122a overlaps the spray port 48c.
- the rotational speeds of the first opening / closing part 112a and the second opening / closing part 122a may be changed during one cycle as long as no significant burden is applied.
- the speed when each of the first opening / closing part 112a and the second opening / closing part 122a passes above the spray port 48c is different from the other speed.
- the length L10 of the blank area X10 can be changed and set in a wider range with respect to the product length L30.
- one cycle refers to the interval between the timings when the opening / closing part passes above the spout. Accordingly, when the opening / closing portion rotates and passes over the spray port once per rotation as in the first embodiment, it means the time for the opening / closing portion to make one rotation. On the other hand, when the opening / closing part reciprocates above the spraying port, the interval between the timing when the opening / closing part passes over the spraying port during forward movement and the timing when the opening / closing part passes over the spraying port during backward movement is set.
- the moving direction of the opening / closing parts 112a and 122a above the spray port 48c is set to the same direction as the conveying direction of the first sheet 201.
- the moving direction of these opening / closing sections may be opposite to the conveying direction of the first sheet 201.
- the movement direction of these opening / closing sections may not be parallel to the sheet conveyance direction.
- the first sheet 201 is conveyed obliquely downward, while the opening / closing section moves in a horizontal direction. May be set.
- the control device 49 sets and changes the rotation start timings of the motors 117 and 127, respectively, to set and change the shift amount of the timing at which the opening and closing parts 112a and 122a overlap the spray port 48c.
- the shift amount of the timing at which the opening / closing parts 112a and 122a overlap the spray port 48c may be set and changed by controlling the rotation of the motors 117 and 127 by an arbitrary method.
- the granular material S an SAP having a single absorbency may be used, but a mixture of a highly absorbent SAP and an SAP having a high absorption rate may be used.
- a highly absorbent SAP is accommodated in one tank 42a of the granular material storage device 42 shown in FIG. 1, and an SAP having a high absorption rate is accommodated in the other tank 42b. It is conceivable to supply SAP at a ratio.
- the granular material S may be a granular material having liquid absorbency other than SAP.
- the powder S is not limited to a powder having liquid absorbency.
- flavor, etc. may be used. It is also possible to use a combination of these multiple types of powder.
- the specific configuration of the first sheet 201 is not limited to the above.
- the first sheet 201 as disclosed in International Publication No. 2014/104118, a sheet in which a plurality of accommodating portions that are recessed downward and accommodate powder particles may be used.
- seat 201 may contain a bulky nonwoven fabric layer and may consist of multiple layers.
- the second sheet 202 is not limited to thin paper (tissue).
- a nonwoven fabric may be sufficient.
- the spray port 48c may be disposed at a position spaced upward from the first sheet 201.
- a passage or the like for guiding the powder S from the spray port 48c toward the first sheet 201 may be formed.
- the conveyance direction of the first sheet 201 is not limited thereto.
- the first sheet 201 may be conveyed in the horizontal direction or obliquely upward below the spout 48c.
- the procedure and apparatus for pressing the sheets 201 and 202 are not limited thereto. Absent.
- the press-contact device 70 can be omitted.
- the hot melt adhesive is used for joining the two sheets 201 and 202 .
- the specific configuration for joining the sheets 201 and 202 is not limited thereto.
- the sheets 201 and 202 may be bonded by heat sealing or ultrasonic bonding.
- the metering device 44 conveys the granular material S downward at a predetermined flow rate.
- this flow rate may be constant or may change with time.
- the flow rate may be increased at a timing corresponding to this part.
- the specific configuration of the metering device 44 is not limited to the above.
- the granular material guide portion 47 is divided into a plurality of individual passages in the width direction of the first sheet 201, and the granular material S flows down to the first sheet 201 through each of the individual passages. At least a part of the granular material S flowing through the individual passages of the part is excluded from the passage by appropriate exclusion means (mechanical means, blowing means by airflow, etc., suction means).
- the supply amount to the first sheet 201 may be changed in the width direction of the first sheet 201.
- the shape of the holding region may be a so-called hourglass shape in which the width of the intermediate portion in the length direction of the first sheet 201 is narrower than other portions.
- the holding body is arranged in two rows in the width direction of the first sheet 201 so that the granular material is not supplied to the intermediate portion in the width direction of the first sheet 201. Furthermore, it is conceivable that the holding regions are arranged in three or more rows in the width direction of the first sheet 201.
- the said 1st Embodiment demonstrated the case where the belt conveyor 18 was used as an apparatus which conveys the 1st sheet
- the present invention provides a powder supply method for supplying powder particles to a sheet being conveyed along a conveyance path, wherein the powder particles are dropped from an accommodating portion for accommodating the powder particles, and a spout
- the first opening / closing means is periodically moved so as to overlap the spraying port when viewed from above in the vertical direction, and the spraying port is periodically moved by the first opening / closing means.
- the second closing means is moved so as to overlap the spray port when viewed from above in the vertical direction at the same period as the first opening and closing means and at a timing delayed from the first opening and closing means.
- the spray port is periodically closed by the second opening and closing means, and when viewed from above in the vertical direction, the upstream edge in the moving direction of the first opening and closing means overlaps the spray port.
- a timing setting step of setting a deviation between the timing at which the spraying port overlaps the spraying port and the timing at which the first opening / closing means overlaps the spraying port is provided.
- the “timing at which the opening / closing means overlaps the spray port” refers to the start or end of the period in which the opening / closing means overlaps the spray port, as described above. Specifically, when the edge on the downstream side in the moving direction of the opening and closing means overlaps the opening edge on the upstream side in the moving direction of the opening and closing means among the opening edges of the spraying ports, the initial stage is set. When the upstream edge in the moving direction overlaps the opening edge on the downstream side in the moving direction of the opening / closing means in the opening edge of the spraying port is the final stage, the "timing at which the opening / closing means overlaps the spraying port" One of these.
- this “deviation” of timing is the time difference between the timing when the downstream edge of each opening and closing means overlaps the opening edge on the upstream side of the spout, or the upstream side of each opening and closing means in the moving direction of the opening and closing means. This is the time difference in timing at which the edges overlap with the edges on the downstream side of the spout.
- the spray opening is continuously closed by the first opening / closing means and the second opening / closing means, the timing at which the second opening / closing means overlaps the spraying opening, and the timing at which the first opening / closing means overlaps the spraying opening. Therefore, it is possible to set and change the time during which the spray port is continuously blocked by the first opening / closing means and the second opening / closing means.
- the time of one cycle of the opening and closing means and the holding region It is possible to easily set and change the length of the region in which the granular material is supplied and held and the length of the blank region (the region not having the granular material) to appropriate values.
- the length of the blank area can be set and changed as appropriate without greatly changing the moving speed of each opening / closing means during one cycle, the load on the driving device that drives each opening / closing means is suppressed. can do.
- the movement of the opening / closing means may be a reciprocating movement.
- the second opening / closing means overlaps the spraying port at a position below the first opening / closing means.
- the granular material that can no longer be controlled to fall to the spray port by the preceding first opening / closing means can be received by the second opening / closing means that follows, so that the first opening / closing means and the second opening / closing means It can suppress more reliably that a granular material is supplied to a sheet
- the spray port has a shape in which an upstream opening edge and a downstream opening edge in the sheet conveying direction extend in a direction orthogonal to the sheet conveying direction, respectively, and the first closing
- the first opening / closing means is disposed above the spraying port with a posture in which a downstream edge in the moving direction of the first opening / closing means extends in a direction perpendicular to the sheet conveying direction as viewed from above in the vertical direction.
- the second opening / closing means is configured such that the upstream edge of the moving direction of the second opening / closing means extends in a direction perpendicular to the sheet conveying direction when viewed from above in the vertical direction. Is preferably passed over the spout.
- the boundary between the holding area and the blank area can be a line extending in a direction orthogonal to the sheet conveying direction.
- this invention is a method of manufacturing the granular material containing article containing a granular material using the granular material supply method comprised as mentioned above, Comprising: The said timing setting process and conveying the said sheet
- the length of the holding region in which the powder is supplied and held between the sheet and the second sheet, while preventing an excessive load from being applied to the driving device that drives the opening / closing means The length of the blank area
- the present invention is a granular material supply device that supplies granular material to a sheet conveyed along a conveying path, the accommodating unit accommodating the granular material, and the powder dropped from the accommodating unit
- a sprinkling port that allows particles to pass toward the front side of the sheet, and a first opening / closing unit and a second opening / closing unit each having a shape capable of closing the sprinkling port when viewed from above in the vertical direction;
- the first driving means moves the first opening / closing means so as to periodically overlap the spray port when viewed from above in the vertical direction
- the second driving means is configured to move the second opening / closing when viewed from above in the vertical direction.
- Means in the spout at the same cycle as the first opening and closing means The first opening / closing means overlaps at a timing later than the first opening / closing means, and the upstream side in the movement direction of the first opening / closing means during a period in which the upstream edge in the movement direction of the first opening / closing means overlaps the spray port.
- the second opening / closing means is moved so that the second opening / closing means extends from the edge of the head toward the upstream side in the moving direction, and the control means is configured to disperse the second opening / closing means as seen from above in the vertical direction.
- a granular material supply device characterized in that the deviation between the timing of overlapping the mouth and the timing of the first opening / closing means overlapping the spraying port can be changed.
- the spray opening is continuously closed by the first opening / closing means and the second opening / closing means, the timing at which the second opening / closing means overlaps the spraying opening, and the timing at which the first opening / closing means overlaps the spraying opening. Therefore, it is possible to set and change the time during which the spray port is continuously blocked by the first opening / closing means and the second opening / closing means. Therefore, by setting and changing this time to an appropriate value, and by setting and changing one cycle of each opening and closing means to an appropriate value, the moving speed of each opening and closing means fluctuates excessively during one cycle. Without this, the length of the holding area and the length of the blank area can be individually changed. Accordingly, it is possible to easily change the lengths of these regions to appropriate values while suppressing an excessive load from being applied to the driving device that drives each opening / closing means.
- the second driving means moves the second opening / closing means so that the second opening / closing means overlaps the spray port at a position below the first opening / closing means.
- the first opening / closing means and the second opening / closing means can be received. It can suppress more reliably that a granular material is supplied to a sheet
- the spray port has a shape in which an upstream opening edge and a downstream opening edge in the sheet conveyance direction extend in a direction perpendicular to the sheet conveyance direction, respectively, and the first drive
- the first opening / closing means is configured so that the first opening / closing means passes above the spraying port in a posture in which an edge on the downstream side of the moving direction of the first opening / closing means extends in a direction perpendicular to the sheet conveyance direction.
- the second driving means has a posture in which the upstream edge of the moving direction of the second opening / closing means extends in a direction perpendicular to the sheet conveying direction, and the second opening / closing means passes above the spraying port. It is preferable to move the second opening / closing means to do so.
- the boundary between the holding area and the blank area can be a line extending in a direction orthogonal to the sheet conveying direction.
- this invention is an apparatus which comprises the granular material supply apparatus comprised as mentioned above, and manufactures the granular material containing article containing a granular material, Comprising: The said sheet
- a production apparatus for a granular material-containing article comprising: a joining device that joins the sheet and the second sheet at a downstream position in the conveying direction.
- the length of the holding region in which the powder is supplied and held between the sheet and the second sheet while suppressing an excessive load from being applied to the driving device that drives the opening / closing means The length of the blank area
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Abstract
Description
図1は、本発明の第1実施形態に係る粉粒体含有物品の製造装置1(以下、単に製造装置1という)を示した概略図である。図2は、図1の一部を拡大するとともに後述する粉粒体散布装置46の内側の構造を示した図である。
第1シート搬送装置10は、第1シート201を搬送するための装置である。第1シート搬送装置10は、ベルトコンベア18と、複数のガイドロール12,13とを備える。第1シート搬送装置10は、ベルトコンベア18がモータ等によって駆動されることで、第1シート201を搬送路に沿って図1の矢印Y1の方向に搬送し、第1シート201を粉粒体供給装置40、第2接着剤塗布装置84、折り曲げ装置60、圧接装置70に、それぞれこの順で送り込む。
粉粒体供給装置40は、第1シート201の表面に向かって粉粒体Sを間欠的に供給する装置である。粉粒体供給装置40の詳細は後述するが、粉粒体供給装置40は、散布口48c(図4参照)を通じて粉粒体Sを第1シート201の上方から第1シート201の表面に落下させる。
吸引装置50は、ベルトコンベア18上の第1シート201をその裏側から吸引するための装置である。
第1接着剤塗布装置82は、第2シート202に接着剤を塗布する装置である。例えば、第1接着剤塗布装置82は、ホットメルト接着剤を第2シート202に塗布する。第1接着剤塗布装置82は、前記のように第2シート202の搬送路のうちガイドロール21の上流側の位置に配置されており、第1シート201の表面に供給される前の第2シート202の表面に接着剤を塗布する。
圧接装置70は、互いに接合された第1シート201と第2シート202とを圧接するための装置である。本実施形態では、圧接装置70は一対のローラ72,72を備え、これらローラ72,72の間を第1シート201と第2シート202とが通過することでこれらをその厚み方向に圧接する。
粉粒体供給装置40の具体的構成について説明する。
粉粒体供給装置40は、粉粒体貯留装置42と、調量装置44と、粉粒体散布装置46と、制御装置49(図6参照)とを備える。粉粒体散布装置46は、粉粒体案内部47と、内側に比較的広い空間を備えた筐体48aを有する開閉装置48とを備える。図4は、図2の一部を拡大して示した図である。図5は図4のV-V線断面図である。図6は、図5のVI-VI線断面図である。
シャッター装置110,120について次に説明する。
制御装置49は、第1シャッター装置110のモータ117と第2シャッター装置120のモータ127を制御するものである。
前記粉粒体供給装置40を用いて、搬送路に沿って搬送されている第1シート201に粉粒体Sを供給する方法は次のようになる。
次に、前記粉粒体供給装置40を含む製造装置1を用いた粉粒体含有物品2の製造方法の手順を図1を用いて説明する。
以上のように、本実施形態に係る粉粒体供給装置40および粉粒体の供給方法では、第1開閉部112aと第2開閉部122aとが、それぞれ、同一周期で散布口48cに周期的に重なるように回転駆動されるとともに、第2開閉部122aが第1開閉部112aよりも遅れたタイミングで散布口48cを塞ぎ、かつ、第1開閉部112aのその回転方向の上流側の縁112a_2が散布口48cと重なっている期間、鉛直方向の上方から見て、この縁112a_2から第1開閉部112aの回転方向の上流側に向かって第2開閉部122aが延びるように、第2開閉部122aが回転駆動される。
前記第1実施形態では、第1開閉部112aと第2開閉部122aとが筐体48aの下面と垂直な軸回りに回転する場合について説明したが、第1開閉部および第2開閉部はそれぞれ散布口48cを周期的に開口可能なものであればよく、その具体的な構成はこれに限らない。
前記第1実施形態では、第2シート202を第1シート201の表面に供給する第2シート搬送装置20のガイドロール21を、散布口48cであって第1シート201に粉粒体Sを供給される部分よりも下流側(第1シート201の搬送方向Y1について)に配置した場合について説明したが、これに代えて、図15および図15の一部を拡大して示した図16のように配置してもよい。
前記第1実施形態では、シャッタープレート112,122をL字形に形成したが、他の形状であってもよい。たとえば開閉部の一方の側方に左右方向へ延びる連結部を備えたI字形としてもよい。また第1実施形態では、開閉部112a,122aの幅方向の縁が、いずれも、シート201の搬送方向と直交する方向に沿って直線状であったが、これら縁は、波形状、山形状、凹状など、他の形状であってもよい。また、これら縁は、必ずしもシートの搬送方向と直交する方向に沿わなくてもよく、搬送方向と傾斜する方向に延びる形状であってもよい。
40 粉粒体供給装置
47a 粉粒体供給口
48c 散布口
112a 第1開閉部(第1実施形態)
122a 第2開閉部(第1実施形態)
201 第1シート
512a 第1開閉部(第2実施形態)
522a 第2開閉部(第2実施形態)
S 粉粒体
Claims (8)
- 搬送路に沿って搬送されているシートに粉粒体を供給する粉粒体供給方法において、
前記粉粒体を収容する収容部から前記粉粒体を落下させて散布口を通じて前記シートの表面に散布する散布工程と、
鉛直方向の上方から見て前記散布口に周期的に重なるように第1開閉手段を移動させて、当該第1開閉手段によって前記散布口を周期的に塞ぐ第1閉鎖工程と、
前記第1開閉手段と同じ周期でかつ当該第1開閉手段よりも遅れたタイミングで鉛直方向の上方から見て前記散布口に重なるように第2開閉手段を移動させて当該第2開閉手段によって前記散布口を周期的に塞ぐとともに、鉛直方向の上方から見て、前記第1開閉手段の移動方向の上流側の縁が前記散布口と重なっている期間中、前記第1開閉手段の移動方向の上流側の縁から当該移動方向の上流側に向かって前記第2開閉手段が延びるように前記第2開閉手段を移動させる第2閉鎖工程と、
鉛直方向の上方から見て前記第2開閉手段が前記散布口に重なるタイミングと前記第1開閉手段が前記散布口に重なるタイミングとのずれを設定するタイミング設定工程とを実施することを特徴とする粉粒体供給方法。 - 請求項1に記載の粉粒体供給方法において、
前記第2閉鎖工程では、前記第2開閉手段を前記第1開閉手段よりも下方の位置で前記散布口に重ならせることを特徴とする粉粒体供給方法。 - 請求項1または2に記載の粉粒体供給方法において、
前記散布口は、前記シートの搬送方向の上流側の開口縁および下流側の開口縁がそれぞれ当該シートの搬送方向と直交する方向に延びる形状を有し、
前記第1閉鎖工程では、鉛直方向の上方から見て前記第1開閉手段の移動方向の下流側の縁が前記シートの搬送方向と直交する方向に延びる姿勢で、前記第1開閉手段を前記散布口の上方を通過させ、
前記第2閉鎖工程では、鉛直方向の上方から見て前記第2開閉手段の移動方向の上流側の縁が前記シートの搬送方向と直交する方向に延びる姿勢で、前記第2開閉手段を前記散布口の上方を通過させることを特徴とする粉粒体供給方法。 - 請求項1~3のいずれかに記載の粉粒体供給方法を用いて粉粒体を含有する粉粒体含有物品を製造する方法であって、
前記タイミング設定工程と、
前記シートを搬送路に沿って搬送する搬送工程と、
前記搬送路に沿って搬送されている前記シートの表面に前記粉粒体を供給する粉粒体供給工程と、
前記シートに前記粉粒体が供給される位置またはこれよりも前記シートの搬送方向の下流側の位置において、前記搬送路に沿って搬送されている前記シートの表面に第2シートを供給する第2シート供給工程と、
前記シートと当該シートの表面に供給された前記第2シートとを接合する接合工程とを含み、
前記粉粒体供給工程において、前記散布工程と、前記第1閉鎖工程と、前記第2閉鎖工程とを実施することを特徴とする粉粒体含有物品の製造方法。 - 搬送路に沿って搬送されているシートに粉粒体を供給する粉粒体供給装置であって、
前記粉粒体を収容する収容部と、当該収容部から落下した粉粒体が前記シートの表側に向かって通過するのを許容する散布口と、鉛直方向の上方から見て前記散布口を塞ぐことが可能な形状をそれぞれ有する第1開閉手段および第2開閉手段と、前記第1開閉手段を駆動する第1駆動手段と、前記第2開閉手段を駆動する第2駆動手段と、これら第1駆動手段および第2駆動手段を制御する制御手段とを備え、
前記第1駆動手段は、鉛直方向の上方から見て前記散布口に周期的に重なるように前記第1開閉手段を移動させ、
前記第2駆動手段は、鉛直方向の上方から見て、前記第2開閉手段が前記散布口に前記第1開閉手段と同じ周期でかつ当該第1開閉手段よりも遅れたタイミングで重なるとともに、前記第1開閉手段の移動方向の上流側の縁が前記散布口と重なっている期間中、前記第1開閉手段の移動方向の上流側の縁から当該移動方向の上流側に向かって前記第2開閉手段が延びるように前記第2開閉手段を移動させ、
前記制御手段は、鉛直方向の上方から見て前記第2開閉手段が前記散布口に重なるタイミングと前記第1開閉手段が前記散布口に重なるタイミングとのずれを変更可能であることを特徴とする粉粒体供給装置。 - 請求項5に記載の粉粒体供給装置において、
前記第2駆動手段は、前記第2開閉手段が前記第1開閉手段よりも下方の位置で前記散布口に重なるように当該第2開閉手段を移動させることを特徴とする粉粒体供給装置。 - 請求項5または6に記載の粉粒体供給装置において、
前記散布口は、前記シートの搬送方向の上流側の開口縁および下流側の開口縁がそれぞれ当該シートの搬送方向と直交する方向に延びる形状を有し、
前記第1駆動手段は、前記第1開閉手段の移動方向の下流側の縁が前記シートの搬送方向と直交する方向に延びる姿勢で第1開閉手段が前記散布口の上方を通過するように当該第1開閉手段を移動させ、
前記第2駆動手段は、前記第2開閉手段の移動方向の上流側の縁が前記シートの搬送方向と直交する方向に延びる姿勢で第2開閉手段が前記散布口の上方を通過するように当該第2開閉手段を移動させることを特徴とする粉粒体供給装置。 - 請求項5~7のいずれかに記載の粉粒体供給装置を備え、粉粒体を含有する粉粒体含有物品を製造する装置であって、
前記シートを前記搬送路に沿って搬送するシート搬送装置と、
前記搬送路のうち前記粉粒体供給装置によって前記シートに前記粉粒体が供給される位置またはこれよりも前記シートの搬送方向の下流側の位置において、前記シートの表面に第2シートを供給する第2シート供給部と、
前記搬送路に設けられて、前記第2シート供給部により前記シートの表面に前記第2シートが供給される位置またはこれよりも前記シートの搬送方向の下流側の位置において、前記シートと前記第2シートとを接合する接合装置とを備えることを特徴とする粉粒体含有物品の製造装置。
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