JP5297788B2

JP5297788B2 - Jig for pulp molding molding

Info

Publication number: JP5297788B2
Application number: JP2008322440A
Authority: JP
Inventors: 俊彦森
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2008-12-18
Filing date: 2008-12-18
Publication date: 2013-09-25
Anticipated expiration: 2028-12-18
Also published as: JP2010144282A

Abstract

<P>PROBLEM TO BE SOLVED: To provide a jig for producing a pulp molded form, causing slight poor molding and/or elastomer damage even if using a projected elastomer (e.g., L- or T-shaped one). <P>SOLUTION: The jig for producing a pulp molded form to be used for dewatering or drying a pulp molded form by feeding/discharging a fluid into/off a contractile bag-shaped elastomer is provided. The jig has a pipe 2 to be disposed with the elastomer on the outer surface, wherein grooves 6 are formed on the pipe longitudinally, and there are a plurality of holes 4 on the flanks of the grooves via which a fluid is fed/discharged into/off the elastomer. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、パルプモールド成形を行う際に使用されるパルプモールド成形体製造用ジグに関し、詳しくは、伸縮自在な袋状の弾性体の内部に流体を給排出してパルプモールド成形体の脱水又は乾燥を行うために用いられるパルプモールド成形体製造用ジグに関する。 The present invention relates to a jig for producing a pulp mold molded body used when performing pulp mold molding. More specifically, the present invention relates to dehydration of a pulp mold molded body by supplying and discharging a fluid into an elastic bag-like elastic body. The present invention relates to a jig for producing a pulp mold product used for drying.

従来、抄紙型の抄紙面にパルプ繊維を蓄積させて湿潤状態の繊維積層体（以下、抄紙体という）を形成した後、この抄紙体の内側から前記抄紙面へ向けて押圧して脱水・乾燥し、所定形状の成形体を得るパルプモールド成形体の製造方法が知られている（例えば、特許文献１〜４を参照）。ここで、抄紙体を内側から押圧する手段として、伸縮自在な袋状の弾性体を装着したジグが用いられる。ジグは、側面に複数の穴が設けられた管状部分を有しており、当該管状部分に伸縮自在な袋状の弾性体をかぶせた状態で使用される。前記の弾性体を装着したジグを抄紙体の開口部から抄紙体内に挿入し、ジグ内に空気などの所定の流体を流すことで、前記の複数の穴を介して弾性体内に流体が供給されて弾性体が膨張する。膨張した弾性体により抄紙体が内側から押圧されて脱水・乾燥される。この弾性体を装着したジグは、脱水乾燥後に、前記流体を吸引排出して弾性体をジグに密着させた状態としてから抄紙体から抜き出される。 Conventionally, pulp fibers are accumulated on a papermaking surface of a papermaking mold to form a wet fiber laminate (hereinafter referred to as a papermaking body), and then pressed from the inside of the papermaking body toward the papermaking surface for dehydration and drying. And the manufacturing method of the pulp mold molded object which obtains the molded object of a predetermined shape is known (for example, refer patent documents 1-4). Here, as a means for pressing the paper body from the inside, a jig equipped with an elastic bag-like elastic body is used. The jig has a tubular portion having a plurality of holes on the side surface, and is used in a state in which the tubular portion is covered with an elastic bag-like elastic body. By inserting the jig equipped with the elastic body into the paper body from the opening of the paper body and flowing a predetermined fluid such as air into the jig, the fluid is supplied to the elastic body through the plurality of holes. The elastic body expands. The paper body is pressed from the inside by the expanded elastic body and dehydrated and dried. After dehydrating and drying, the jig equipped with this elastic body is extracted from the papermaking body after the fluid is sucked and discharged to bring the elastic body into close contact with the jig.

しかし、開口部が小さい成形体を製造する場合には、弾性体を装着したジグを抄紙体に挿入・抜出する際に抄紙体内面に弾性体が接触して、成形不良が起きたり、弾性体が破損したりしやすい等の問題があった。特に、突出の有る特殊な形状の成形体（例えば、Ｌ字型やＴ字型の湯道管、エルボー管など）を製造する際には、突出の有る形状（例えばＬ字型やＴ字型など）の弾性体を使用するため、前記問題が多く発生している。 However, when manufacturing a molded body with a small opening, the elastic body comes into contact with the inner surface of the papermaking body when inserting or removing the jig with the elastic body into the papermaking body. There was a problem that the body was easily damaged. In particular, when manufacturing a molded body having a special shape with protrusions (for example, L-shaped or T-shaped runner pipes, elbow pipes, etc.), a shape with protrusions (for example, L-shaped or T-shaped) Etc.), the above problems occur frequently.

特許第７８６００号公報Japanese Patent No. 78600 特開２０００−２３９９９９号公報JP 2000-239999 A 特開２０００−３０３４００号公報JP 2000-303400 A 特開２００２−２６６２９９号公報JP 2002-266299 A

本発明の目的は、突出の有る形状（例えばＬ字型やＴ字型など）の弾性体を使用しても成形不良や弾性体の破損が少ないパルプモールド成形体製造用ジグを提供することにある。 An object of the present invention is to provide a jig for producing a pulp mold molded body, which is less prone to molding or breakage of an elastic body even when an elastic body having a protruding shape (for example, L-shaped or T-shaped) is used. is there.

本発明は、伸縮自在な袋状の弾性体の内部に流体を給排出してパルプモールド成形体の脱水又は乾燥を行うために用いられるパルプモールド成形体製造用ジグであって、外表面に前記弾性体が配置される管部を有し、かつ、前記管部には長手方向に溝部が形成されており、その側面に前記弾性体の内部に流体を給排出する複数の流通孔を有していることを特徴とするパルプモールド成形体製造用ジグを提供する。 The present invention is a jig for producing a pulp mold molded body used for dehydrating or drying a pulp mold molded body by supplying and discharging a fluid into and out of an elastic bag-shaped elastic body. A tube portion in which an elastic body is disposed, and a groove portion is formed in the longitudinal direction in the tube portion, and a plurality of flow holes for supplying and discharging fluid to and from the inside of the elastic body are formed on the side surface of the tube portion. A jig for producing a pulp molded product is provided.

本発明のパルプモールド成形体製造用ジグは、溝部を設けることでジグ表面積を増加させ、吸引時に弾性体をジグに密着させることができ、弾性体をかぶせた状態のジグの太さを細くすることができる。これにより、抄紙体に挿入・抜出する際の抄紙体内面と弾性体との接触を更に防止することができる。また、突出部の有る形状（例えばＬ字型やＴ字型など）の弾性体の当該突出部に対応する部分に切り欠き部が設けられており、前記突出部が前記切り欠き部内に収容されるため、開口部が小さい成形体を製造する場合であっても、抄紙体に挿入・抜出する際の抄紙体内面と弾性体との接触を防止することができ、成形不良や弾性体の破損を抑制することができる。
また、切り欠き部に突起部を設けることで、弾性体の突出部を前記切り欠き部内に収納する際のガイドとして作用し、弾性体の破損を更に抑制することができる。
本発明の方法によれば、開口部が小さい成形体を製造する場合であっても、成形不良の発生を抑制してパルプモールド成形体を製造することができる。 The jig for producing a pulp mold molded body of the present invention can increase the jig surface area by providing a groove, and can adhere the elastic body to the jig at the time of suction, thereby reducing the thickness of the jig covered with the elastic body. be able to. As a result, it is possible to further prevent contact between the inner surface of the papermaking body and the elastic body during insertion / extraction from the papermaking body. In addition, a notch is provided in a portion corresponding to the protrusion of the elastic body having a protrusion (for example, L-shaped or T-shaped), and the protrusion is accommodated in the notch. Therefore, even when a molded body having a small opening is manufactured, it is possible to prevent contact between the inner surface of the papermaking body and the elastic body when being inserted into or extracted from the papermaking body. Damage can be suppressed.
In addition, by providing the notched portion with the protrusion, it acts as a guide when the protruding portion of the elastic body is housed in the notched portion, and damage to the elastic body can be further suppressed.
According to the method of the present invention, even when a molded body having a small opening is manufactured, it is possible to manufacture a pulp mold molded body while suppressing the occurrence of molding defects.

以下、本発明の好ましい一実施態様について、添付の図面に基づいて詳細に説明する。なお、各図の説明において同一の要素には同一の符号を付す。
図１は、本発明のパルプモールド成形体製造用ジグの好ましい一実施態様（第１実施態様）の斜視図であり、Ｌ字型の弾性体に適用されるジグの例である。
本発明のパルプモールド成形体製造用ジグ１０は、流体供給手段（図示せず）に固定するための本体固定手段１と、外表面に袋状弾性体が配置される管部２と、袋状弾性体を固定するための弾性体固定手段３とを備えている。管部２は本体固定手段１に接合されて一体化している。なお、ジグの大きさは、抄紙体内に挿入可能であれば特に制限はなく、目的の成形体の大きさに応じて任意に決定される。 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the description of each drawing, the same elements are denoted by the same reference numerals.
FIG. 1 is a perspective view of a preferred embodiment (first embodiment) of a jig for producing a pulp molded product of the present invention, and is an example of a jig applied to an L-shaped elastic body.
The jig 10 for producing a pulp mold molded body of the present invention includes a body fixing means 1 for fixing to a fluid supply means (not shown), a tube portion 2 in which a bag-like elastic body is disposed on the outer surface, and a bag-like shape. And an elastic body fixing means 3 for fixing the elastic body. The tube part 2 is joined and integrated with the main body fixing means 1. The size of the jig is not particularly limited as long as it can be inserted into the paper body, and is arbitrarily determined according to the size of the target molded body.

本体固定手段１は、ジグ本体１０を流体供給手段に固定するものである。固定は、溶接やネジ止めなど任意の方法により行うことができる。なお、図１では、本体固定手段１を上側に（流体供給手段の下部にジグ１０が配置されるように）示しているが、ジグ１０が抄紙体の開口部に対してほぼ垂直に挿入・抜出されるようにジグ１０及び抄紙体が配置されていればよく、ジグ１０の向きは特に制限されない。
本体固定手段１の略中央部には貫通孔が設けられており、流体が管部２内に流通するように本体固定手段１と管部２とが接合される。 The main body fixing means 1 fixes the jig main body 10 to the fluid supply means. Fixing can be performed by any method such as welding or screwing. In FIG. 1, the main body fixing means 1 is shown on the upper side (so that the jig 10 is disposed below the fluid supply means), but the jig 10 is inserted almost perpendicularly to the opening of the paper body. The jig 10 and the papermaking body need only be arranged so as to be extracted, and the direction of the jig 10 is not particularly limited.
A through hole is provided in a substantially central portion of the main body fixing means 1, and the main body fixing means 1 and the pipe portion 2 are joined so that fluid flows through the pipe portion 2.

管部２は、内部が中空となっており流体の流通路となっている。使用時には、管部２の外表面に、突出部を有する伸縮自在な袋状弾性体が配置され、管部２内を流通する流体は、袋状弾性体を膨張・縮小させるために用いられる。管部２の側面には複数の流通孔４が設けられている。流通孔４を通じて、管部２の外表面に配置される袋状弾性体の内部に流体が給排出される。流通孔４の大きさ、形状及び個数は、弾性体の肉厚や形状に応じて適宜決定され特に制限はない。 The pipe part 2 is hollow inside and serves as a fluid flow path. In use, a stretchable bag-like elastic body having a protruding portion is disposed on the outer surface of the tube portion 2, and the fluid flowing through the tube portion 2 is used to expand and contract the bag-like elastic body. A plurality of flow holes 4 are provided on the side surface of the tube portion 2. Through the circulation hole 4, the fluid is supplied and discharged into the bag-like elastic body disposed on the outer surface of the pipe portion 2. The size, shape, and number of the flow holes 4 are appropriately determined according to the thickness and shape of the elastic body and are not particularly limited.

また、管部２には切り欠き部５が設けられており、吸引時に弾性体の突出部が切り欠き部５内に収容される。切り欠き部５は、弾性体の突起収納する効果を有する。位置は、使用される袋状弾性体の突出部に対応する部分であり、弾性体の形状に応じて適宜決定される。例えば、図１に示すように、Ｌ字型の弾性体（先端部に突出部を有する弾性体）が使用される場合には、管部２の先端に切り欠き部５が設けられる。Ｔ字型（ト字型）の弾性体（中央部付近に突出部を有する弾性体）が使用される場合には、管部２の中央部付近の弾性体の突出部に対応する部分に切り欠き部５が設けられる。
切り欠き部５の大きさは弾性体の形状に応じて適宜決定され特に制限はないが、切り欠き部５の縦幅Ｌは、弾性体の突出部の縦幅に対して１０５〜１１０％程度の長さが好ましく、切り欠き部５の深さＤは、管部２の直径の４０〜６０％程度の深さが好ましい。なお、切り欠き部５の厚みは１〜２ｍｍが好ましい。 Moreover, the notch part 5 is provided in the pipe part 2, and the protrusion part of an elastic body is accommodated in the notch part 5 at the time of attraction | suction. The notch 5 has the effect of accommodating the protrusion of the elastic body. A position is a part corresponding to the protrusion part of the bag-shaped elastic body used, and is suitably determined according to the shape of an elastic body. For example, as shown in FIG. 1, when an L-shaped elastic body (an elastic body having a protruding portion at the distal end portion) is used, a notch portion 5 is provided at the distal end of the tube portion 2. When a T-shaped (t-shaped) elastic body (an elastic body having a protruding portion near the center) is used, the tube 2 is cut into a portion corresponding to the protruding portion of the elastic body near the center. A notch 5 is provided.
The size of the cutout portion 5 is appropriately determined according to the shape of the elastic body and is not particularly limited, but the vertical width L of the cutout portion 5 is about 105 to 110% with respect to the vertical width of the protruding portion of the elastic body. The depth D of the notch 5 is preferably about 40 to 60% of the diameter of the tube 2. In addition, as for the thickness of the notch part 5, 1-2 mm is preferable.

弾性体固定手段３は、袋状弾性体を固定するためのものである。管部２の外表面に配置された袋状弾性体について、弾性体の開口部を管部２の根元部分で本体固定手段１と弾性体固定手段３とにより挟み込み、弾性体内に流体を供給しても弾性体が外れないように固定する。固定は、例えば本体固定手段１と弾性体固定手段３とをネジ止めすることにより行うことができる。 The elastic body fixing means 3 is for fixing the bag-like elastic body. With respect to the bag-like elastic body arranged on the outer surface of the pipe portion 2, the opening of the elastic body is sandwiched between the main body fixing means 1 and the elastic body fixing means 3 at the root portion of the pipe portion 2, and fluid is supplied into the elastic body. Fix the elastic body so that it does not come off. The fixing can be performed, for example, by screwing the main body fixing means 1 and the elastic body fixing means 3.

管部２の側面には、管部２の軸中心から放射状に配置される長手方向の溝部６が形成されていることが好ましい。溝部６を設けることで、管部２の表面積を増加させ、吸引時に弾性体をジグ１０に密着させることができ、弾性体をかぶせた状態のジグ１０の太さを細くすることができる。これにより、抄紙体に挿入・抜出する際の抄紙体内面と弾性体との接触を防止することができる。また、前記流通孔４は、吸引時に弾性体をジグ１０に十分に密着させる観点から、溝部６内に一定間隔で複数配置されていることが好ましい。
溝部６の大きさ、深さ、形状及び本数は、弾性体の肉厚や形状に応じて適宜決定され特に制限はないが、管部２の外表面積に弾性体の内表面積の６０〜１００％の表面積を持たせるように決定されることが好ましく、７０％以上の表面積を持たせるように決定されることがより好ましい。溝部６の配置間隔は１０〜４０ｍｍであることが好ましい。 It is preferable that a longitudinal groove portion 6 is formed on the side surface of the tube portion 2 so as to be radially arranged from the axial center of the tube portion 2. By providing the groove portion 6, the surface area of the tube portion 2 can be increased, the elastic body can be brought into close contact with the jig 10 during suction, and the thickness of the jig 10 covered with the elastic body can be reduced. Thereby, it is possible to prevent contact between the inner surface of the papermaking body and the elastic body when being inserted into and extracted from the papermaking body. Moreover, it is preferable that a plurality of the flow holes 4 are arranged at regular intervals in the groove 6 from the viewpoint of sufficiently bringing the elastic body into close contact with the jig 10 during suction.
The size, depth, shape, and number of the groove portions 6 are appropriately determined according to the thickness and shape of the elastic body and are not particularly limited. However, the outer surface area of the tube portion 2 is 60 to 100% of the inner surface area of the elastic body. Is preferably determined so as to have a surface area of 70% or more, and more preferably determined so as to have a surface area of 70% or more. It is preferable that the arrangement | positioning space | interval of the groove part 6 is 10-40 mm.

また、図２に本発明のパルプモールド成形体製造用ジグの別の好ましい一実施態様（第２実施態様）の斜視図を示す。
図２に示す実施態様では、切り欠き部５の周上において、管部２の軸対象の位置に少なくとも一対の突起部７が形成されている。このように、少なくとも一対の突起部７を設けることで、弾性体の突出部を切り欠き部５内に収納する際のガイドとして作用し、弾性体の破損を更に抑制することができる。
突起部７の大きさ及び形状は、弾性体の形状に応じて適宜決定され特に制限はないが、突起部７の縦幅としては弾性体の突出部の縦幅に対して２０〜５０％の長さが好ましく、突起部７の高さとしては弾性体の突出部の長さの１０〜５０％の高さが好ましい。突起部７の形状は、エッジが無い形状であることが好ましい。なお、突起部７の厚みは１〜２ｍｍが好ましい。
この実施態様のジグにおける他の構成や作用、効果は、第１実施態様のジグと同様である。 FIG. 2 shows a perspective view of another preferred embodiment (second embodiment) of the jig for producing a pulp mold product of the present invention.
In the embodiment shown in FIG. 2, at least a pair of protrusions 7 are formed on the periphery of the notch 5 at the axial target position of the tube 2. Thus, by providing at least a pair of protrusions 7, it acts as a guide when the protruding portion of the elastic body is housed in the cutout portion 5, and damage to the elastic body can be further suppressed.
The size and shape of the protrusion 7 are appropriately determined according to the shape of the elastic body and are not particularly limited. However, the vertical width of the protrusion 7 is 20 to 50% of the vertical width of the protrusion of the elastic body. The length is preferable, and the height of the protrusion 7 is preferably 10 to 50% of the length of the protruding portion of the elastic body. The shape of the protrusion 7 is preferably a shape having no edge. In addition, as for the thickness of the projection part 7, 1-2 mm is preferable.
Other configurations, operations, and effects of the jig of this embodiment are the same as those of the jig of the first embodiment.

次に、パルプモールド成形体の製造方法について説明する。
パルプモールド成形の一般的な方法については、特許第７８６００号公報、特開２０００−２３９９９９号公報、特開２０００−３０３４００号公報、特開２００２−２６６２９９号公報などの記載を参照することができる。その概要は以下のとおりである。まず、抄紙型の抄紙面にパルプ繊維を蓄積させて湿潤状態の抄紙体（パルプ繊維積層体）を形成する。次いで、袋状弾性体を装着したジグを抄紙体の開口部から抄紙体内に挿入した後、ジグを通じて袋状弾性体内に空気などの流体を供給し弾性体を膨出させて抄紙体の内側から前記抄紙面へ向けて押圧して抄紙体の脱水・乾燥を行う。最後に、袋状弾性体内から流体を吸引排出して弾性体をジグに密着させた状態でジグを抄紙体の開口部から抜き出し、抄紙型を取り外すことで、所定形状の成形体を得ることができる。 Next, the manufacturing method of a pulp mold molded object is demonstrated.
For general methods of pulp molding, reference can be made to Patent 78600, JP-A 2000-239999, JP-A 2000-303400, JP-A 2002-266299, and the like. The outline is as follows. First, a pulp paper is accumulated on a papermaking surface of a papermaking mold to form a wet papermaking body (pulp fiber laminate). Next, after inserting the jig fitted with the bag-like elastic body into the paper-making body through the opening of the paper-making body, fluid such as air is supplied to the bag-like elastic body through the jig to bulge the elastic body from the inside of the paper-making body. The paper body is dehydrated and dried by pressing toward the paper surface. Finally, with the fluid sucked and discharged from the bag-like elastic body, the jig is extracted from the opening of the papermaking body in a state where the elastic body is closely attached to the jig, and the papermaking mold can be removed to obtain a molded body having a predetermined shape. it can.

本発明のジグに用いられる袋状弾性体の形状は、一端が閉じたパイプ状であり、任意の箇所に突出部を有している。例えば、先端部に突出部を有するＬ字型のものや、中央部付近に突出部を有するＴ字型（ト字型）のものを好ましく用いることができる。袋状弾性体の開口部付近には、弾性体固定手段３によってジグに固定できるように、弾性体の長さ方向に対して垂直な扁平部分を有することが好ましい。
弾性体としては、伸縮してその体積が変化しうる材質のものであれば特に制限なく用いることができるが、耐久性・耐熱性の観点から、天然ゴム、又はポリウレタン、フッ素系ゴム、シリコーン系ゴム、もしくはエラストマー等の合成ゴム等の弾性材料で構成されたものが好ましい。弾性体の寸法（長さ）は、成形するパルプモールド成形体と同じ寸法ないし２ｍｍ程度外側にオフセットした寸法であることが好ましい。 The shape of the bag-like elastic body used in the jig of the present invention is a pipe shape with one end closed, and has a protruding portion at an arbitrary location. For example, an L-shaped one having a protruding portion at the tip portion or a T-shaped (t-shaped) having a protruding portion near the center portion can be preferably used. In the vicinity of the opening of the bag-like elastic body, it is preferable to have a flat portion perpendicular to the length direction of the elastic body so that it can be fixed to the jig by the elastic body fixing means 3.
The elastic body can be used without particular limitation as long as it is a material that can expand and contract and change its volume, but from the viewpoint of durability and heat resistance, natural rubber, polyurethane, fluorine rubber, silicone Those composed of an elastic material such as rubber or synthetic rubber such as elastomer are preferred. The dimension (length) of the elastic body is preferably the same as the pulp mold molded body to be molded or a dimension offset to the outside by about 2 mm.

袋状弾性体に供給排出される流体としては特に限定されないが、具体例としては例えば、空気、熱風、蒸気、過熱蒸気、油などが挙げられる。操作性等の点から、空気、熱風または過熱蒸気を用いることが特に好ましい。
袋状弾性体内に流体を供給する際の圧力は、脱水乾燥に供される成形体に応じて適宜設定することができるが、成形体の成形加工性や、弾性体を拡張させる際の操作、簡易な設備で脱水が行える等の点から、０．０１〜０．０５ＭＰａであることが好ましい。 The fluid supplied to and discharged from the bag-like elastic body is not particularly limited, but specific examples include air, hot air, steam, superheated steam, and oil. From the viewpoint of operability and the like, it is particularly preferable to use air, hot air or superheated steam.
The pressure when supplying the fluid into the bag-shaped elastic body can be appropriately set according to the molded body to be subjected to dehydration and drying, but the molding processability of the molded body and the operation for expanding the elastic body, From the point that dehydration can be performed with simple equipment, it is preferably 0.01 to 0.05 MPa.

以下に、本発明のパルプモールド成形体製造用ジグを用いたパルプモールド成形体の製造方法の好ましい一実施態様について説明する。 Below, the preferable one embodiment of the manufacturing method of the pulp mold molded object using the jig for pulp mold molded object manufacture of this invention is demonstrated.

まず初めに、準備として、本発明のジグ１０に、突出部を有する伸縮自在な袋状の弾性体を装着する。弾性体をジグ１０の管部２にかぶせて、弾性体の突出部がジグ１０の切り欠き部５に対応する位置となるように位置合わせを行う。弾性体の開口部を管部２の根元部分で本体固定手段１と弾性体固定手段３とにより挟み込み、弾性体内に流体を供給しても弾性体が外れないように固定する。弾性体を装着したジグ１０は、本体固定手段１により流体供給手段に固定される。 First, as a preparation, a stretchable bag-like elastic body having a protrusion is attached to the jig 10 of the present invention. The elastic body is placed on the tube portion 2 of the jig 10 and alignment is performed so that the protruding portion of the elastic body is in a position corresponding to the notch portion 5 of the jig 10. The opening of the elastic body is sandwiched between the main body fixing means 1 and the elastic body fixing means 3 at the base portion of the tube portion 2 and fixed so that the elastic body does not come off even when a fluid is supplied into the elastic body. The jig 10 equipped with an elastic body is fixed to the fluid supply means by the main body fixing means 1.

抄紙型の抄紙面にパルプ繊維を蓄積させて湿潤状態の抄紙体（パルプ繊維積層体）を形成した後、前記の袋状弾性体を装着したジグを抄紙体の開口部から抄紙体内に挿入する。この状態で、流体供給手段からジグ１０を介して弾性体内に流体を供給する。流体供給手段から供給された流体は、本体固定手段１に設けられた貫通孔を通って管部２内に供給され、管部２の側面に設けられた複数の流通孔４から弾性体内に供給される。流体が供給された弾性体は膨出し、抄紙体を内面から押圧する。このようにして抄紙体の脱水・乾燥が行われる。 After pulp fibers are accumulated on the papermaking surface of the papermaking mold to form a wet papermaking body (pulp fiber laminate), a jig fitted with the bag-like elastic body is inserted into the papermaking body through the opening of the papermaking body. . In this state, fluid is supplied from the fluid supply means to the elastic body via the jig 10. The fluid supplied from the fluid supply means is supplied into the pipe portion 2 through the through hole provided in the main body fixing means 1 and supplied into the elastic body from the plurality of flow holes 4 provided in the side surface of the pipe portion 2. Is done. The elastic body supplied with the fluid swells and presses the papermaking body from the inner surface. In this way, the paper body is dehydrated and dried.

脱水・乾燥工程の終了後、弾性体内の流体を吸引排出するとともに、弾性体を縮小させてジグ１０に密着させる。このとき、吸引により、弾性体の突出部はジグ１０の切り欠き部５に収容され、弾性体が密着したジグの外観は突出した部分のない状態となる。なお、図１に示すようにジグ１０が管部２に溝部６を有する場合、管部２の表面積が増加することにより弾性体のダブつきがなくなり、吸引時に弾性体をジグ１０により十分に密着させることができる。また、図２に示すように管部２の軸対象の位置に突起部７が形成されている場合、弾性体の突出部がジグ１０の切り欠き部５内に収納される際にガイドとして作用し、弾性体の破損を更に抑制することができる。
最後に、弾性体をジグ１０に密着させた状態でジグ１０を抄紙体の開口部から抜き出し、抄紙型を取り外すことで、所定形状の成形体を得ることができる。 After completion of the dehydration / drying process, the fluid in the elastic body is sucked and discharged, and the elastic body is contracted and brought into close contact with the jig 10. At this time, due to the suction, the protruding portion of the elastic body is accommodated in the notch portion 5 of the jig 10, and the appearance of the jig to which the elastic body is in close contact is not in the protruding portion. As shown in FIG. 1, when the jig 10 has the groove portion 6 in the tube portion 2, the surface area of the tube portion 2 is increased so that the elastic body is not dubbed, and the elastic body is sufficiently adhered to the jig 10 during suction. Can be made. In addition, when the protruding portion 7 is formed at the position of the axial object of the tube portion 2 as shown in FIG. 2, it acts as a guide when the protruding portion of the elastic body is stored in the notch portion 5 of the jig 10. In addition, the breakage of the elastic body can be further suppressed.
Finally, with the elastic body in close contact with the jig 10, the jig 10 is extracted from the opening of the papermaking body and the papermaking mold is removed, whereby a molded body having a predetermined shape can be obtained.

本発明は、前記各実施態様に限定されるものではなく、本発明の趣旨を逸脱しない範囲において、変更することができる。例えば、切り欠き部５や突起部７の配置箇所は弾性体の突出部の位置に応じて適宜設定することができる。 The present invention is not limited to the above embodiments, and can be modified without departing from the spirit of the present invention. For example, the arrangement location of the notch 5 and the protrusion 7 can be appropriately set according to the position of the protruding portion of the elastic body.

以下、本発明を実施例に基づき更に詳細に説明するが、本発明はこれらに限定されるものではない。 EXAMPLES Hereinafter, although this invention is demonstrated in detail based on an Example, this invention is not limited to these.

実施例１
図１に示した形態の本発明のジグ１０（直径３０ｍｍのＬ字型弾性体用）及び切り欠き部５を有しないこと以外は本発明のジグ１０と同様の形態の比較例のジグを用いて、下記測定条件において弾性体の突出部の最大直径寸法を１０回測定し、平均最大直径寸法の比較を行った。なお、平均最大直径寸法は小さいほど好ましい。
まず、直径３０ｍｍのＬ字型弾性体をジグ１０にそれぞれ取り付け、本体固定手段１に設けられた貫通孔に吸引装置の吸引口をテープで固定した。このときエア漏れが無いことを確認した。吸引装置で吸引を開始し、弾性体の突出部の突出方向の長さを測定した。なお、このときの吸引力は０．０２ＭＰａであった。結果を表１に示す。 Example 1
The jig 10 of the present invention in the form shown in FIG. 1 (for an L-shaped elastic body having a diameter of 30 mm) and the jig of the comparative example having the same form as the jig 10 of the present invention are used except that the notch 5 is not provided. Then, the maximum diameter dimension of the protruding portion of the elastic body was measured 10 times under the following measurement conditions, and the average maximum diameter dimension was compared. The smaller the average maximum diameter dimension, the better.
First, an L-shaped elastic body having a diameter of 30 mm was attached to each jig 10, and the suction port of the suction device was fixed to the through hole provided in the main body fixing means 1 with a tape. At this time, it was confirmed that there was no air leakage. Suction was started with a suction device, and the length of the protruding portion of the elastic body in the protruding direction was measured. The suction force at this time was 0.02 MPa. The results are shown in Table 1.

表１の結果から明らかなように、切り欠き部を有する本発明のジグは、切り欠き部のない比較例のジグに比べて、弾性体の突出部の寸法が小さくなることがわかった。このことから、本発明のジグは、吸引時に弾性体の突出部が切り欠き部に収容されるため、開口部が小さい成形体を製造する場合にも成形不良や弾性体の破損が少ないことがわかる。 As is apparent from the results in Table 1, it was found that the jig of the present invention having a notch has a smaller size of the protruding portion of the elastic body than the jig of the comparative example having no notch. From this, the jig of the present invention is such that the protruding part of the elastic body is accommodated in the cutout part at the time of suction, so even when a molded body with a small opening is manufactured, molding defects and damage to the elastic body are less likely. Recognize.

実施例２
図１に示した形態の本発明のジグ１０（直径３０ｍｍのＬ字型弾性体用）及び溝部６を有しないこと以外は本発明のジグ１０と同様の形態のジグを用いて、下記測定条件において弾性体の直線形状部の最大直径寸法を１０回測定し、平均最大直径寸法の比較を行った。なお、平均最大直径寸法は小さいほど好ましい。
まず、直径３０ｍｍのＬ字型弾性体をジグ１０にそれぞれ取り付け、本体固定手段１に設けられた貫通孔に掃除機の吸引口をテープで固定した。このときエア漏れが無いことを確認した。掃除機で吸引を開始し、弾性体の直線形状部の外径を測定した。なお、このときの吸引力は０．０２ＭＰａであった。結果を表２に示す。 Example 2
The jig of the present invention in the form shown in FIG. 1 (for an L-shaped elastic body having a diameter of 30 mm) and the jig having the same form as the jig 10 of the present invention except that the groove 6 is not used, and the following measurement conditions The maximum diameter dimension of the linear portion of the elastic body was measured 10 times, and the average maximum diameter dimension was compared. The smaller the average maximum diameter dimension, the better.
First, an L-shaped elastic body having a diameter of 30 mm was attached to the jig 10, and the suction port of the vacuum cleaner was fixed to the through hole provided in the main body fixing means 1 with a tape. At this time, it was confirmed that there was no air leakage. Suction was started with a vacuum cleaner, and the outer diameter of the linear portion of the elastic body was measured. The suction force at this time was 0.02 MPa. The results are shown in Table 2.

表２の結果から明らかなように、溝部を有する本発明のジグは、溝部のないジグに比べて、弾性体の直線形状部の寸法が小さくなることがわかった。このことから、溝部を有する本発明のジグは、溝部６が設けられたことで管部２の表面積が大きくなり、吸引時に弾性体のダブつきがなくなって弾性体が十分に密着するため、開口部が小さい成形体を製造する場合にも成形不良や弾性体の破損が少ないことがわかる。 As is clear from the results in Table 2, it was found that the jig of the present invention having the groove portion has a smaller dimension of the linear shape portion of the elastic body than the jig having no groove portion. From this, the jig of the present invention having the groove portion has a large surface area due to the provision of the groove portion 6, and the elastic body is sufficiently adhered and the elastic body is sufficiently adhered at the time of suction. It can be seen that even when a molded body having a small part is produced, molding defects and damage to the elastic body are small.

実施例３
図１に示した形態の本発明のジグ（突起部７なし）及び図２に示した形態の本発明のジグ（突起部７あり）（ともに直径２５ｍｍのＬ字型弾性体用）を用いて、下記条件においてパルプモールド成形体の生産を１日行い、弾性体の平均寿命を測定した。なお、弾性体の平均寿命は長いほど好ましい。
まず、直径２５ｍｍのＬ字型弾性体をジグ１０にそれぞれ取り付けた状態で、本体固定手段１によりジグを流体供給手段に固定した。そして、パルプモールド成形体の生産をそれぞれ１日行い、１日間の弾性体の平均寿命（ショット数／本）を比較した。なお、このときの吸引力は０．０５ＭＰａであった。結果を表３に示す。 Example 3
1 using the jig of the present invention shown in FIG. 1 (without protrusion 7) and the jig of the present invention shown in FIG. 2 (with protrusion 7) (both for an L-shaped elastic body having a diameter of 25 mm). The pulp molded body was produced for 1 day under the following conditions, and the average life of the elastic body was measured. The longer the average life of the elastic body, the better.
First, the jig was fixed to the fluid supply means by the main body fixing means 1 with the L-shaped elastic body having a diameter of 25 mm attached to the jig 10. Then, each of the pulp mold molded bodies was produced for one day, and the average life (number of shots / piece) of the elastic bodies for one day was compared. The suction force at this time was 0.05 MPa. The results are shown in Table 3.

表３の結果から明らかなように、突起部を有する図２に示した形態の本発明のジグは、突起部のない図１に示した形態の本発明のジグに比べて、弾性体の平均寿命が１．３倍に向上することがわかった。 As is clear from the results in Table 3, the jig of the present invention having the protrusion shown in FIG. 2 has an average elastic body as compared with the jig of the present invention having the protrusion shown in FIG. It was found that the lifetime was improved by 1.3 times.

図１は、本発明のパルプモールド成形体製造用ジグの好ましい一実施態様（第１実施態様）の斜視図である。FIG. 1 is a perspective view of a preferred embodiment (first embodiment) of a jig for producing a pulp molded product of the present invention. 図２は、本発明のパルプモールド成形体製造用ジグの別の好ましい一実施態様（第２実施態様）の斜視図である。FIG. 2 is a perspective view of another preferred embodiment (second embodiment) of a jig for producing a pulp mold product of the present invention.

符号の説明Explanation of symbols

１０パルプモールド成形体製造用ジグ
１本体固定手段
２管部
３弾性体固定手段
４流通孔
５切り欠き部
６溝部
７突起部
Ｌ切り欠き部５の縦幅
Ｄ切り欠き部５の深さ DESCRIPTION OF SYMBOLS 10 Jig for pulp mold molding body 1 Main body fixing means 2 Tube part 3 Elastic body fixing means 4 Flow hole 5 Notch part 6 Groove part 7 Protrusion part L Vertical width D of the notch part 5 Depth of the notch part 5

Claims

伸縮自在な袋状の弾性体の内部に流体を給排出してパルプモールド成形体の脱水又は乾燥を行うために用いられるパルプモールド成形体製造用ジグであって、
外表面に前記弾性体が配置される管部を有し、かつ、前記管部には長手方向に溝部が形成されており、その側面に前記弾性体の内部に流体を給排出する複数の流通孔を有していることを特徴とするパルプモールド成形体製造用ジグ。 A jig for producing a pulp mold molded body used for supplying and discharging a fluid into and out of an elastic bag-shaped elastic body to dehydrate or dry a pulp molded molded body,
A plurality of circulations that have a pipe part in which the elastic body is arranged on an outer surface, and a groove part is formed in the pipe part in the longitudinal direction, and fluid is supplied to and discharged from the inside of the elastic body on the side surface. A jig for producing a pulp mold product, comprising a hole.

前記管部に切り欠き部が設けられている、請求項１記載のパルプモールド成形体製造用ジグ。 The jig for producing a pulp mold product according to claim 1, wherein the tube portion is provided with a notch.

前記切り欠き部は前記管部の先端に設けられている、請求項２記載のパルプモールド成形体製造用ジグ。 The jig for producing a pulp mold product according to claim 2, wherein the notch is provided at a tip of the pipe part.

前記管部の側面に、前記管部の長手方向に溝部が形成されており、かつ、溝部の凹部に前記流通孔が配置されている、請求項２又は３に記載のパルプモールド成形体製造用ジグ。 4. The pulp mold molded body production according to claim 2, wherein a groove is formed in a longitudinal direction of the tube portion on a side surface of the tube portion, and the flow hole is disposed in a recess of the groove portion. Jig.

前記切り欠き部の周上の軸対象の位置に少なくとも一対の突起部が形成されている、請求項１〜４のいずれか１項に記載のパルプモールド成形体製造用ジグ。 The jig for manufacturing a pulp mold product according to any one of claims 1 to 4, wherein at least a pair of protrusions are formed at positions of axial objects on the periphery of the notch.

前記弾性体を固定する弾性体固定手段を備えている、請求項１〜５のいずれか１項に記載のパルプモールド成形体製造用ジグ。 The jig for pulp mold molded body production according to any one of claims 1 to 5, further comprising an elastic body fixing means for fixing the elastic body.

請求項１〜６のいずれか１項に記載のパルプモールド成形体製造用ジグを用いたパルプモールド成形体の製造方法であって、
（ａ）開口部を有する湿潤状態のパルプ繊維積層体内に、伸縮自在な袋状の弾性体を装着した前記ジグを該開口部から挿入する工程、
（ｂ）前記ジグの管部内に流体を供給し、前記ジグの流通孔を介して前記弾性体内に前記流体を供給して該弾性体を膨出させて前記パルプ繊維積層体の内面を押圧し、該パルプ繊維積層体の脱水又は乾燥を行う工程、及び
（ｃ）前記流体を吸引排出して、前記弾性体を前記ジグに密着させ、前記ジグを前記開口部から抜出する工程
を含むパルプモールド成形体の製造方法。 It is a manufacturing method of the pulp mold molded object using the jig for pulp mold molded object manufacturing of any one of Claims 1-6,
(A) Inserting the jig, which is provided with an elastic bag-like elastic body, into the wet pulp fiber laminate having an opening from the opening;
(B) supplying a fluid into the pipe portion of the jig, supplying the fluid into the elastic body through the jig circulation hole, and expanding the elastic body to press the inner surface of the pulp fiber laminate. And a step of dehydrating or drying the pulp fiber laminate, and (c) a step of sucking and discharging the fluid, bringing the elastic body into close contact with the jig, and extracting the jig from the opening. A method for producing a molded body.