JP6055371B2 - Tread rubber material pasting device - Google Patents

Tread rubber material pasting device Download PDF

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JP6055371B2
JP6055371B2 JP2013097801A JP2013097801A JP6055371B2 JP 6055371 B2 JP6055371 B2 JP 6055371B2 JP 2013097801 A JP2013097801 A JP 2013097801A JP 2013097801 A JP2013097801 A JP 2013097801A JP 6055371 B2 JP6055371 B2 JP 6055371B2
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tread rubber
rubber member
tread
center
width
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JP2014217998A (en
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朝一 坪井
朝一 坪井
洋一 徳峰
洋一 徳峰
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Sumitomo Rubber Industries Ltd
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Description

本発明は、トレッドゴム部材をトレッド成形ドラムの外周面に下方側から貼り付ける際の、空気溜まりの発生を抑制しうるトレッドゴム部材の貼付け装置に関する。   The present invention relates to a tread rubber member affixing device that can suppress the occurrence of air pockets when a tread rubber member is affixed to the outer peripheral surface of a tread molding drum from below.

生タイヤの製造においては、例えば円筒状のトレッド成形ドラム上に、帯状のベルト形成部材等とトレッドゴム部材とを順次貼り付けて、環状のトレッドリングを形成するトレッド成形行程が行われる。そしてこの行程に用いられるトレッドゴム部材の貼付け装置として、下記の特許文献1に記載のものが知られている。この貼付け装置aは、図7に示すように、搬入されるトレッドゴム部材Gを載置する載置面bsを上面に設けたテーブル台bと、前記テーブル台bを長さ方向に移動可能に保持するテーブル移動台cとを具える。そして前記テーブル移動台cによるテーブル台bの移動により、前記載置面bs上に保持されたトレッドゴム部材Gを、回転するトレッド成形ドラムDの外周面にその下方側から貼り付ける。   In the production of green tires, for example, a tread molding process is performed in which a belt-like belt forming member and a tread rubber member are sequentially attached onto a cylindrical tread molding drum to form an annular tread ring. And the thing of the following patent document 1 is known as a sticking apparatus of the tread rubber member used for this process. As shown in FIG. 7, this affixing device a has a table base b provided with a mounting surface bs on which the loaded tread rubber member G is mounted, and the table base b can be moved in the length direction. A holding table moving table c. Then, the tread rubber member G held on the mounting surface bs is attached to the outer peripheral surface of the rotating tread molding drum D from below by the movement of the table table b by the table moving table c.

ここで、トレッドゴム部材Gでは、一般に、タイヤの加硫金型が閉じる際のトレッドゴムの流動が円滑に行われるように、図8(A)に示すように、巾中心線Coの両側にゴム厚さが最大となる最大厚さ部Gaを向けた略M字状の断面形状に形成されている。なお、前記最大厚さ部Gaにおけるゴム厚さTmax と、巾中心線Co上でのゴム厚さTcとの差であるトレッドゴム部材Gの凹量(Tmax −Tc)は、通常1.5〜3.0mm程度である。   Here, in the tread rubber member G, generally, the tread rubber flows smoothly when the vulcanization mold of the tire is closed, as shown in FIG. 8A, on both sides of the width center line Co. It is formed in a substantially M-shaped cross-section facing the maximum thickness portion Ga where the rubber thickness is maximum. The concave amount (Tmax−Tc) of the tread rubber member G, which is the difference between the rubber thickness Tmax at the maximum thickness portion Ga and the rubber thickness Tc on the width center line Co, is normally 1.5 to It is about 3.0 mm.

しかし、前記貼付け装置aを用いて断面略M字状のトレッドゴム部材Gを、トレッド成形ドラムDに下方側から貼り付ける場合、トレッドゴム部材Gとベルト形成部材等との間に空気溜まりが発生し、タイヤ品質を低下させるという問題が生じる。その理由は、図8(B)に示すように、前記貼付け装置aの載置面bsが平面であるため、その載置面bs上に前記トレッドゴム部材Gを載置した場合には、トレッド成形ドラムDへの貼付け面となるトレッドゴム部材Gの上面Gsの中央側に、凹み部Kができてしまい、貼り付け時に、ベルト形成部材との間に空気溜まりを発生させる。   However, when the tread rubber member G having a substantially M-shaped cross section is pasted to the tread molding drum D from the lower side using the pasting device a, an air pocket is generated between the tread rubber member G and the belt forming member. However, the problem of deteriorating tire quality arises. The reason for this is that, as shown in FIG. 8 (B), since the mounting surface bs of the affixing device a is a flat surface, when the tread rubber member G is mounted on the mounting surface bs, the tread A concave portion K is formed on the center side of the upper surface Gs of the tread rubber member G to be a surface to be attached to the forming drum D, and an air pocket is generated between the belt forming member and the surface when it is attached.

特開2002−18976号公報JP 2002-18976 A

そこで本発明は、載置面上に載置したときトレッドゴム部材の上面中央側に凹み部が形成されるのを抑制することができ、トレッドゴム部材とベルト形成部材等との間に空気溜まりが発生するのを抑えてタイヤ品質を向上させうるトレッドゴム部材の貼付け装置を提供することを目的としている。   Therefore, the present invention can suppress the formation of a dent on the center side of the upper surface of the tread rubber member when placed on the placement surface, and an air reservoir between the tread rubber member and the belt forming member or the like. It aims at providing the sticking apparatus of the tread rubber member which can suppress generation | occurrence | production of tire and can improve tire quality.

上記課題を解決するために、本願請求項1の発明は、長さ方向に定寸切りされたトレッドゴム部材を、回転するトレッド成形ドラムの外周面に、その下方側から貼り付けるトレッドゴム部材の貼付け装置であって、
搬入されるトレッドゴム部材を載置する載置面を上面に設けたテーブル台と、
前記テーブル台を長さ方向に移動可能に保持するとともに、前記移動により、前記載置面上のトレッドゴム部材を、回転するトレッド成形ドラムの外周面にその下方側から貼り付けるテーブル移動台とを具え、
しかも前記テーブル台は、
巾方向中央側に配されかつ上面が前記載置面の中央面部をなすセンタテーブル部分と、このセンタテーブル部分の両外側に配されかつ上面が前記載置面の側面部をなすとともに一側縁部が長さ方向にのびる軸心廻りで傾動可能に枢支されるサイドテーブル部分とからなるテーブル本体、及び
前記サイドテーブル部分を、前記側面部が前記中央面部と面一となる標準状態と、前記側面部が中央面部よりも下方となる下傾動状態との間で傾動させる傾動手段を具えることを特徴としている。
In order to solve the above-mentioned problem, the invention of claim 1 of the present application is a tread rubber member in which a tread rubber member cut in a length direction is attached to the outer peripheral surface of a rotating tread molding drum from the lower side. A pasting device,
A table base provided with a placement surface on which the tread rubber member to be carried is placed;
A table moving table for holding the table table movably in the length direction and attaching the tread rubber member on the mounting surface to the outer peripheral surface of the rotating tread molding drum from the lower side by the movement. Prepared,
Moreover, the table base is
A center table portion disposed on the center side in the width direction and having an upper surface forming the central surface portion of the mounting surface, and an outer surface disposed on both outer sides of the center table portion and the upper surface forming side surfaces of the mounting surface and one side edge A table body comprising a side table portion pivotally supported so as to be tiltable about an axis extending in the length direction, and a standard state in which the side table portion is flush with the central surface portion, It is characterized by comprising tilting means for tilting between the side surface portion and a downward tilt state in which the side surface portion is below the center surface portion.

また請求項2では、前記サイドテーブル部分は、巾方向外側の側縁部が枢支されることを特徴としている。   According to a second aspect of the present invention, the side table portion is characterized in that a side edge portion on the outer side in the width direction is pivotally supported.

また請求項3では、前記傾動手段は、前記サイドテーブル部分を下向きに付勢するバネ体と、前記サイドテーブル部分を上向きに押し上げて前記標準状態に維持するシリンダとを具えることを特徴としている。   According to a third aspect of the present invention, the tilting means includes a spring body that urges the side table portion downward, and a cylinder that pushes the side table portion upward to maintain the standard state. .

また請求項4では、前記トレッドゴム部材は、巾中心線の両側にゴム厚さが最大となる最大厚さ部を具えるとともに、前記中央面部の巾Wcは、10mm以上かつ前記最大厚さ部間の巾WGの60%以下であることを特徴としている。   According to a fourth aspect of the present invention, the tread rubber member includes a maximum thickness portion where the rubber thickness is maximized on both sides of the width center line, and the width Wc of the central surface portion is 10 mm or more and the maximum thickness portion. It is characterized by being 60% or less of the width WG.

また請求項5では、前記下傾動状態において、前記側面部がトレッドゴム部材の前記最大厚さ部に接する接触位置から前記中央面部までの上下方向の距離である凸量P、及び前記トレッドゴム部材における巾中心線でのゴム厚さTcと前記最大厚さ部でのゴム厚さTmax との差であるトレッドゴム部材Gの凹量(Tmax −Tc)は、下記式(1)を充足することを特徴としている。
{(Tmax −Tc)−P}≦1.5 −−−(1)
According to a fifth aspect of the present invention, in the downward tilted state, a convex amount P which is a vertical distance from a contact position where the side surface portion is in contact with the maximum thickness portion of the tread rubber member to the central surface portion, and the tread rubber member The concave amount (Tmax−Tc) of the tread rubber member G, which is the difference between the rubber thickness Tc at the width center line and the rubber thickness Tmax at the maximum thickness portion, satisfies the following formula (1). It is characterized by.
{(Tmax−Tc) −P} ≦ 1.5 −−− (1)

本発明は叙上の如く、テーブル台のうち載置面を形成するテーブル本体を、巾方向中央側に配されかつ上面が載置面の中央面部をなすセンタテーブル部分と、このセンタテーブル部分の両外側に配されかつ上面が載置面の側面部をなすサイドテーブル部分とに区分するとともに、前記サイドテーブル部分の一側縁部を、長さ方向にのびる軸心廻りで傾動可能に枢支している。叉前記サイドテーブル部分は、傾動手段により、前記側面部が中央面部と面一となる標準状態と、前記側面部が中央面部よりも下方となる下傾動状態との間で傾動可能としている。   As described above, according to the present invention, a table body that forms a mounting surface of a table base is divided into a center table portion that is arranged on the center side in the width direction and the upper surface forms a central surface portion of the mounting surface, and the center table portion The side table portion is divided into a side table portion which is arranged on both outer sides and the upper surface forms a side surface portion of the mounting surface, and one side edge portion of the side table portion is pivotally supported so as to be tiltable around an axial center extending in the length direction. doing. The side table portion can be tilted by tilting means between a standard state in which the side surface portion is flush with the central surface portion and a downward tilt state in which the side surface portion is below the central surface portion.

従って、前記標準状態において載置面は平面となり、搬入されるトレッドゴム部材を、波打ちや変形を生じることなく平らに受け取ることができる。しかも載置面が平面のため、受け取ったトレッドゴム部材のセンタ合わせなどの位置合わせを、精度良く行うことができる。叉前記下傾動状態においては、載置面は巾方向両側が下がった凸面状となる。そのため載置状態において、断面略M字状のトレッドゴム部材の上面中央側に、凹み部が形成されるのを抑えることができ、トレッドゴム部材を貼り付けする際、トレッドゴム部材とベルト形成部材等との間に空気溜まりが発生するのを抑制しうる。   Therefore, the mounting surface is flat in the standard state, and the tread rubber member carried in can be received flat without causing undulation or deformation. Moreover, since the mounting surface is flat, the received tread rubber member can be accurately aligned such as center alignment. In the fork tilt state, the mounting surface has a convex shape with both sides in the width direction lowered. Therefore, in the mounted state, it is possible to suppress the formation of a dent on the center of the upper surface of the tread rubber member having a substantially M-shaped cross section. When the tread rubber member is attached, the tread rubber member and the belt forming member It is possible to suppress the occurrence of air pockets between them.

本発明のトレッドゴム部材の貼付け装置の一実施例を示す斜視図である。It is a perspective view which shows one Example of the sticking apparatus of the tread rubber member of this invention. テーブル台を分解して示す部分斜視図である。It is a fragmentary perspective view which decomposes | disassembles and shows a table base. テーブル台を上方から見た平面図である。It is the top view which looked at the table stand from upper direction. (A)、(B)はテーブル台の標準状態及び下傾動状態を示す断面図である。(A), (B) is sectional drawing which shows the standard state and downward tilt state of a table base. センサを示す部分断面図である。It is a fragmentary sectional view showing a sensor. (A)、(B)は標準状態及び下傾動状態のテーブル台に載置されたトレッドゴム部材の断面形状を示す断面図である。(A), (B) is sectional drawing which shows the cross-sectional shape of the tread rubber member mounted in the table stand of the standard state and the downward tilt state. 従来のトレッドゴム部材の貼付け装置の一例を示す斜視図である。It is a perspective view which shows an example of the pasting apparatus of the conventional tread rubber member. (A)はトレッドゴム部材の断面形状を示す断面図、(B)は従来のトレッドゴム部材の貼付け装置に載置されたトレッドゴム部材の断面形状を示す断面図である。(A) is sectional drawing which shows the cross-sectional shape of a tread rubber member, (B) is sectional drawing which shows the cross-sectional shape of the tread rubber member mounted in the pasting apparatus of the conventional tread rubber member.

以下、本発明の実施の形態について、詳細に説明する。
図1に示すように、本実施形態のトレッドゴム部材の貼付け装置1(以下に「貼付け装置1」と呼ぶ。)は、長さ方向Fに定寸切りされたトレッドゴム部材Gを、回転するトレッド成形ドラムDの外周面に、その下方側から貼り付ける装置であって、搬入されるトレッドゴム部材Gを載置するテーブル台2と、このテーブル台2を長さ方向Fに移動可能に保持するテーブル移動台3とを具える。なお図1では、便宜上、後述する枢着金具25を削除して描いている。
Hereinafter, embodiments of the present invention will be described in detail.
As shown in FIG. 1, a tread rubber member pasting device 1 (hereinafter referred to as “paste device 1”) of the present embodiment rotates a tread rubber member G that is cut in a length direction F. A device for attaching the tread rubber member G to the outer peripheral surface of the tread molding drum D from below, and holding the table base 2 movably in the length direction F. And a table moving table 3 to be operated. In FIG. 1, for convenience, a pivot fitting 25 described later is omitted.

前記テーブル移動台3は、本例では、架台6に移動手段7を介して支持される移動台8を具える。本例の移動手段7は、長さ方向Fにのびかつ前記架台6の前後の側板6A、6A間に架け渡される一対のガイド軸9と、前記側板6A、6A間で枢支されかつ前記ガイド軸9と平行なボールネジ軸10とを具える。このボールネジ軸10は、例えば前記架台6に固定の駆動モータMに連結される。   In this example, the table moving table 3 includes a moving table 8 that is supported by a frame 6 via a moving means 7. The moving means 7 of the present example includes a pair of guide shafts 9 extending in the longitudinal direction F and spanned between the front and rear side plates 6A and 6A of the mount 6, and pivotally supported between the side plates 6A and 6A. A ball screw shaft 10 parallel to the shaft 9 is provided. The ball screw shaft 10 is connected to a drive motor M fixed to the gantry 6, for example.

前記移動台8は、その下面に、前記ガイド軸9に摺動自在に案内される案内部8Aと、前記ボールネジ軸10に螺合するナット部(図示しない。)とを具え、前記駆動モータMによるボールネジ軸10の回転に応じて長さ方向Fに移動しうる。なお前記移動手段7としては、本例の如きボールネジ機構に限定されるものではなく、例えば、チェーン・スプロケット機構、ラック・ピニオン機構なども適宜採用しうる。叉前記テーブル台2に、案内部8A及びナット部を設けることにより、前記移動台8を用いることなく、テーブル台2を移動手段7によって直接移動可能に支持することもできる。   The movable table 8 includes a guide portion 8A slidably guided by the guide shaft 9 and a nut portion (not shown) screwed to the ball screw shaft 10 on the lower surface thereof. Can move in the length direction F in accordance with the rotation of the ball screw shaft 10. The moving means 7 is not limited to the ball screw mechanism as in this example, and for example, a chain / sprocket mechanism, a rack / pinion mechanism, or the like may be employed as appropriate. By providing the table base 2 with the guide portion 8A and the nut portion, the table base 2 can be supported by the moving means 7 so as to be directly movable without using the moving base 8.

次に、前記テーブル台2は、本例では、前記移動台8に固定される基枠部12と、この基枠部12に取り付きかつ上面にトレッドゴム部材Gを載置する載置面Sを設けたテーブル本体13とを具える。   Next, the table base 2 has, in this example, a base frame portion 12 fixed to the movable base 8, and a mounting surface S that is attached to the base frame portion 12 and on which the tread rubber member G is mounted. And a table main body 13 provided.

前記基枠部12は、本例では、図2、3に示すように、枠材14Aによって四辺を囲んだ矩形枠組み状の周囲枠14と、この周囲枠14の内周面間を継ぐ継ぎ板15とを具える。なお図3では、便宜上、後述する空気吹き出し口19、24を削除して描いている。   In this example, as shown in FIGS. 2 and 3, the base frame portion 12 includes a rectangular frame-shaped peripheral frame 14 that surrounds four sides by a frame member 14 </ b> A and a joint plate that connects between the inner peripheral surfaces of the peripheral frame 14. 15 and. In FIG. 3, for convenience, air outlets 19 and 24 described later are omitted.

叉前記テーブル本体13は、巾方向中央側に配されるセンタテーブル部分13cと、このセンタテーブル部分13cの巾方向両外側に配されるサイドテーブル部分13sとから形成される。前記センタテーブル部分13cは、固定のテーブル部分であって、本例では、前記継ぎ板15から立ち上がりかつ長さ方向Fにのびる一対の側板16と、この側板16の上端間を閉じる上板17とから形成される。そして前記上板17の上面が、前記載置面Sの中央面部Scを構成する。   The table body 13 is formed of a center table portion 13c disposed on the center side in the width direction and side table portions 13s disposed on both outer sides in the width direction of the center table portion 13c. The center table portion 13c is a fixed table portion, and in this example, a pair of side plates 16 rising from the joint plate 15 and extending in the length direction F, and an upper plate 17 closing between the upper ends of the side plates 16 are provided. Formed from. And the upper surface of the said upper board 17 comprises the center surface part Sc of the mounting surface S mentioned above.

本例のセンタテーブル部分13cは、図4(A)、(B)に示すように、その内部に、前記側板16と上板17と継ぎ板15とで囲む空気室Hcが設けられるとともに、前記継ぎ板15には空気供給口18が、叉前記上板17には小孔状の複数の空気吹き出し口19がそれぞれ開口している。   As shown in FIGS. 4 (A) and 4 (B), the center table portion 13c of this example is provided with an air chamber Hc surrounded by the side plate 16, the upper plate 17 and the joint plate 15, An air supply port 18 is opened in the joint plate 15, and a plurality of small air outlets 19 are opened in the upper plate 17.

叉前記サイドテーブル部分13sは、本例では、長さ方向Fにのびる一対の側板20と、この側板20の上端間を閉じる上板21と、下端間を閉じる下板22とからなり、前記上板21の上面が、前記載置面Sの側面部Ssを構成する。叉本例のサイドテーブル部分13sは、その内部に、前記側板20と上板21と下板22とで囲む空気室Hsが設けられるとともに、前記下板22には空気供給口23が、叉前記上板21には小孔状の複数の空気吹き出し口24がそれぞれ開口している。なお前記空気供給口18、23には、例えばポンプ、ブロアーなどの空気供給源が接続される。   In this example, the side table portion 13s includes a pair of side plates 20 extending in the length direction F, an upper plate 21 that closes between the upper ends of the side plates 20, and a lower plate 22 that closes between the lower ends. The upper surface of the plate 21 constitutes the side surface portion Ss of the mounting surface S described above. The side table portion 13s of the present example is provided therein with an air chamber Hs surrounded by the side plate 20, the upper plate 21, and the lower plate 22, and the lower plate 22 has an air supply port 23, and A plurality of small air outlets 24 are formed in the upper plate 21. The air supply ports 18 and 23 are connected to an air supply source such as a pump or a blower.

叉前記サイドテーブル部分13sの一側縁部は、枢着金具25により、長さ方向Fにのびる軸心j廻りで傾動可能に枢支される。本例では、サイドテーブル部分13sの巾方向外側の側縁部が枢支される場合が示される。前記枢着金具25は、前記図2に示すように、例えば軸心jをなす支持軸25A1を保持するホルダ状の第1の金具部25Aと、前記支持軸25A1に枢支される枢支孔を有する第2の金具部25Bとからなり、一方の金具部(本例では第1の金具部25A)が前記基枠部12に取り付き、かつ他方の金具部(本例では第2の金具部25B)がサイドテーブル部分13sに取り付く。なお枢着金具25としては特に限定されるものではなく周知の種々な構造のものが採用しうる。   The one side edge of the side table portion 13s is pivotally supported by a pivot fitting 25 so as to be tiltable about an axis j extending in the length direction F. In this example, the case where the side edge part of the width direction outer side of the side table part 13s is pivotally supported is shown. As shown in FIG. 2, the pivot fitting 25 includes, for example, a holder-like first fitting portion 25A that holds a support shaft 25A1 that forms an axis j, and a pivot hole that is pivotally supported by the support shaft 25A1. The first metal part (in this example, the first metal part 25A) is attached to the base frame part 12, and the other metal part (in this example, the second metal part). 25B) attaches to the side table portion 13s. The pivot fitting 25 is not particularly limited, and various known structures can be adopted.

叉前記テーブル台2は、図4(A)、(B)に示すように、前記サイドテーブル部分13sを、その側面部Ssが前記中央面部Scと面一となる標準状態Y1と、前記側面部Ssが中央面部Scよりも下方となる下傾動状態Y2との間で傾動させる傾動手段26をさらに具える。   As shown in FIGS. 4 (A) and 4 (B), the table base 2 includes the side table portion 13s, a standard state Y1 in which the side surface portion Ss is flush with the central surface portion Sc, and the side surface portion. There is further provided tilting means 26 for tilting between the lower tilt state Y2 in which Ss is below the center surface portion Sc.

前記傾動手段26は、本例では、前記サイドテーブル部分13sを下向きに付勢するバネ体26Aと、前記サイドテーブル部分13sを上向きに押し上げて前記標準状態Y1に維持するシリンダ26Bとを具える。前記バネ体26Aは、本例ではコイルバネであってその上端下端が、それぞれサイドテーブル部分13s及び継ぎ板15に設ける係止ピンに係止される。   In this example, the tilting means 26 includes a spring body 26A that urges the side table portion 13s downward, and a cylinder 26B that pushes the side table portion 13s upward and maintains the standard state Y1. The spring body 26A is a coil spring in this example, and its upper and lower ends are locked to locking pins provided on the side table portion 13s and the joint plate 15, respectively.

叉前記シリンダ26Bは、そのロッド端26B1を上方に向けて前記継ぎ板15に固定され、ロッドの伸張により前記サイドテーブル部分13sを前記下傾動状態Y2から標準状態Y1まで上方に押し上げうる。叉ロッドの縮小により、前記バネ体26Aの付勢により前記サイドテーブル部分13sを標準状態Y1から下傾動状態Y2まで引き下げうる。なお本例では、前記シリンダ26Bには、サイドテーブル部分13sとの当接面積を減じて円滑な接触を行うために、ロッド端26B1に球面状の当接面部28を設けている。叉サイドテーブル部分13sの下面には、前記ロッド端26B1との衝撃を緩和させる緩衝材29が配される。   The cylinder 26B is fixed to the joint plate 15 with its rod end 26B1 facing upward, and the side table portion 13s can be pushed upward from the downward tilted state Y2 to the standard state Y1 by extension of the rod. By reducing the fork rod, the side table portion 13s can be pulled down from the standard state Y1 to the downward tilt state Y2 by urging the spring body 26A. In this example, the cylinder 26B is provided with a spherical contact surface portion 28 at the rod end 26B1 in order to reduce the contact area with the side table portion 13s and perform smooth contact. On the lower surface of the fork side table portion 13s, a cushioning material 29 for reducing the impact with the rod end 26B1 is disposed.

叉前記テーブル台2には、前記標準状態Y1および下傾動状態Y2におけるサイドテーブル部分13sの各傾動位置を規制するストッパ(図示しない。)が設けられるとともに、標準状態Y1を検知するセンサ30が配される。前記センサ30は、図5に示すように、本例では、前記サイドテーブル部分13sに取り付き下方に垂下する例えば板状のアクチェータ部30Aと、前記継ぎ板15に取り付き前記標準状態Y1におけるアクチェータ部30Aを検知するセンサ部30Bとからなり、センサ部30Bとして例えば接触型、非接触型の種々の近接スイッチが好適に採用しうる。   The table base 2 is provided with a stopper (not shown) for restricting each tilt position of the side table portion 13s in the standard state Y1 and the downward tilt state Y2, and a sensor 30 for detecting the standard state Y1 is arranged. Is done. As shown in FIG. 5, in this example, the sensor 30 is attached to the side table portion 13s and hangs downward. For example, the plate-like actuator portion 30A is attached to the joint plate 15 and the actuator portion 30A in the standard state Y1. For example, various proximity switches of a contact type and a non-contact type can be suitably employed as the sensor unit 30B.

叉本例のテーブル台2には、載置面S上のトレッドゴム部材Gに対してセンタ合わせするためのセンタリング手段31が配される。このセンタリング手段31は、前記テーブル本体13の巾方向両側で向かい合って配される複数の押し進具32から形成される。前記押し進具32は、本例では、テーブル本体13の側面に、ロッド端を巾方向内側に向けて固定されるシリンダ32Aと、このシリンダ32Aの前記ロッド端に取り付くガイド板32Bとを具える。そして、各押し進具32のシリンダ32Aが同期して伸張し、各ガイド板32Bがトレッドゴム部材Gの側縁部を巾中心側に押し進することで、トレッドゴム部材Gの姿勢や位置が修正され、ガイド板32B、32B間で精度良くセンタリングされる。   A centering means 31 for centering the tread rubber member G on the mounting surface S is disposed on the table base 2 of the fork example. The centering means 31 is formed of a plurality of pushing tools 32 arranged facing each other on both sides in the width direction of the table body 13. In this example, the pushing tool 32 includes, on the side surface of the table body 13, a cylinder 32A that is fixed with the rod end facing inward in the width direction, and a guide plate 32B that is attached to the rod end of the cylinder 32A. . And the cylinder 32A of each pushing tool 32 extends synchronously, and each guide plate 32B pushes the side edge of the tread rubber member G toward the width center side, so that the posture and position of the tread rubber member G are changed. It is corrected and centered with high accuracy between the guide plates 32B and 32B.

この時、トレッドゴム部材Gを載置面S上で円滑に移動させるために、載置面Sには前記空気吹き出し口19、24が設けられている。そして前記空気供給源からの空気を、前記空気供給口18、23、空気室Hc、Hsをへて空気吹き出し口19、24から吹き出すことにより、トレッドゴム部材Gを載置面Sから浮き上がらせることができ、前記位置合わせの際の移動を円滑に行うことができる。なお吹き出し停止により、トレッドゴム部材Gは、その粘着性により載置面Sに位置ずれすることなく保持される。なお前記空気の吹き出しは、トレッドゴム部材Gの搬入を、波打ち、皺より、蛇行などの変形を生じることなく円滑に行うためにも役立つ。   At this time, in order to smoothly move the tread rubber member G on the mounting surface S, the air blowing ports 19 and 24 are provided on the mounting surface S. Then, the air from the air supply source is blown out from the air blowing ports 19 and 24 through the air supply ports 18 and 23 and the air chambers Hc and Hs, so that the tread rubber member G is lifted from the mounting surface S. And the movement during the alignment can be performed smoothly. Note that the tread rubber member G is held on the placement surface S without being displaced due to the adhesiveness by stopping the blowing. The air blowing is also useful for smoothly carrying in the tread rubber member G without causing deformation such as meandering from undulations and wrinkles.

然して、本実施形態の貼付け装置1は、図6(A)に示すように、標準状態Y1においては、載置面Sが、その中央面部Scと側面部Ssとが面一となる平面をなす。従って、搬入されるトレッドゴム部材Gを、載置面S上で変形を生じることなく平らに受け取ることができる。しかも受け取ったトレッドゴム部材Gのセンタ合わせなどの位置合わせを、精度良く行うことができる。   However, as shown in FIG. 6A, in the pasting device 1 of the present embodiment, in the standard state Y1, the placement surface S forms a plane in which the center surface portion Sc and the side surface portion Ss are flush with each other. . Therefore, the loaded tread rubber member G can be received flat on the placement surface S without causing deformation. In addition, alignment of the received tread rubber member G such as center alignment can be performed with high accuracy.

叉図6(B)に示すように、下傾動状態Y2においては、側面部Ssが中央面部Scよりも下方となる。即ち前記載置面Sは、巾方向両側が下がった凸面状となる。そのため、載置状態において、断面略M字状のトレッドゴム部材Gの上面Gsの中央側に、凹み部K(図に示す。)が形成されるのを抑えることができ、貼り付け時に空気溜まりが発生するのを抑制しうる。特に本例の如く、サイドテーブル部分13sの巾方向外側の側縁部を枢支するのが好ましい。この場合、前記中央面部Scが側面部Ssから段差状に突出し、トレッドゴム部材Gの中央側での押し上げ効果を高めるため、例えば巾方向内側の側縁部を枢支した場合に比して、空気溜まりをより効果的に抑制しうる。   As shown in FIG. 6B, in the downward tilt state Y2, the side surface portion Ss is lower than the central surface portion Sc. In other words, the placement surface S has a convex shape with both sides in the width direction lowered. For this reason, in the mounted state, it is possible to suppress the formation of the recess K (shown in the drawing) on the center side of the upper surface Gs of the tread rubber member G having a substantially M-shaped cross section. Can be prevented from occurring. In particular, as in this example, it is preferable to pivotally support the side edge of the side table portion 13s on the outer side in the width direction. In this case, the central surface portion Sc projects from the side surface portion Ss, and in order to enhance the push-up effect on the center side of the tread rubber member G, for example, compared to the case where the side edge portion on the inner side in the width direction is pivoted, Air accumulation can be more effectively suppressed.

ここで、前記中央面部Scの巾Wcが過大であると、空気溜まりの抑制効果が充分発揮されなくなる。逆に、前記巾Wcが過小であると、トレッド成形ドラムD側へのトレッドゴム部材Gの接着力が弱くなって貼り付け不良を招く恐れが生じる。なお接着力を高めるために、トレッドゴム部材Gをトレッド成形ドラムD側に強く押し付ける場合には、前記段差によってトレッドゴム部材Gに傷が発生し、タイヤ品質を低下させる。従って、前記巾Wcの上限は、前記トレッドゴム部材Gの最大厚さ部Ga、Ga間の巾WG(前記図8(A)に示す。)の60%以下が好ましく、叉下限は10mm以上が好ましい。なおトレッドゴム部材Gのトレッド成形ドラムD側への押し付けは、本例ではトレッド成形ドラムDが下降することによりなされるが、例えば貼付け装置1に、テーブル本体13或いはテーブル台3を昇降可能に支持する周知構造の昇降手段を設けることもできる。   Here, if the width Wc of the central surface portion Sc is excessively large, the effect of suppressing air accumulation cannot be sufficiently exhibited. On the other hand, if the width Wc is too small, the adhesive force of the tread rubber member G to the tread molding drum D side becomes weak, which may cause a sticking failure. When the tread rubber member G is strongly pressed against the tread molding drum D in order to increase the adhesive force, the tread rubber member G is damaged due to the step, and the tire quality is deteriorated. Therefore, the upper limit of the width Wc is preferably 60% or less of the width WG (shown in FIG. 8A) between the maximum thickness portions Ga and Ga of the tread rubber member G, and the foremost limit is 10 mm or more. preferable. The tread rubber member G is pressed to the tread molding drum D side in this example by lowering the tread molding drum D. For example, the table body 13 or the table base 3 is supported by the pasting device 1 so as to be movable up and down. It is also possible to provide lifting means having a known structure.

又前記下傾動状態Y2においては、前記側面部Ssは、トレッドゴム部材Gの前記最大厚さ部Gaと接触する。その接触位置Zから前記中央面部Scまでの上下方向の距離である凸量をPとしたとき、前記凸量P、及び前記図8(A)に示すように、前記トレッドゴム部材Gにおける巾中心線Coでのゴム厚さTcと前記最大厚さ部Gaでのゴム厚さTmax との差であるトレッドゴム部材Gの凹量(Tmax −Tc)は、下記式(1)を充足するのが好ましい。
{(Tmax −Tc)−P}≦1.5 −−−(1)
Further, in the downward tilted state Y2, the side surface portion Ss contacts the maximum thickness portion Ga of the tread rubber member G. When the convex amount that is the vertical distance from the contact position Z to the central surface portion Sc is P, the convex amount P and the center of the width of the tread rubber member G as shown in FIG. The concave amount (Tmax−Tc) of the tread rubber member G, which is the difference between the rubber thickness Tc at the line Co and the rubber thickness Tmax at the maximum thickness portion Ga, satisfies the following formula (1). preferable.
{(Tmax−Tc) −P} ≦ 1.5 −−− (1)

即ち、前記凸量Pが、トレッドゴム部材Gの凹量(Tmax −Tc)に比して小さすぎると、空気溜まりの抑制効果が充分発揮されなくなり、特に前記凹量(Tmax −Tc)と凸量Pとの差{(Tmax −Tc)−P}が1.5mmを超えると、凹量(Tmax −Tc)が大きすぎ、或いは凸量Pが小さすぎとなって空気溜まりの抑制効果が充分発揮されなくなる。なお前記凸量Pの上限は6.0mm以下が好ましく、6.0mmを超えると、トレッドゴム部材Gが巾方向に大きく湾曲するため、トレッド成形ドラムD上で一周巻きした時、巾方向両側で周長が不足する。その結果、トレッドゴム部材Gの周方向両端面間を突き合わせてジョイントする時、両端面間に隙間が生じてジョイント不良が発生する恐れを招く。   That is, if the convex amount P is too small as compared with the concave amount (Tmax−Tc) of the tread rubber member G, the effect of suppressing air accumulation is not sufficiently exhibited, and in particular, the concave amount (Tmax−Tc) and the convex amount. When the difference {(Tmax−Tc) −P} from the amount P exceeds 1.5 mm, the concave amount (Tmax−Tc) is too large, or the convex amount P is too small, and the effect of suppressing air accumulation is sufficient. It will not be demonstrated. The upper limit of the convex amount P is preferably 6.0 mm or less, and if it exceeds 6.0 mm, the tread rubber member G is greatly curved in the width direction. The circumference is insufficient. As a result, when the circumferential ends of the tread rubber member G are brought into contact with each other in the joint, a gap is generated between the both ends, which may cause a joint failure.

以上、本発明の特に好ましい実施形態について詳述したが、本発明は図示の実施形態に限定されることなく、種々の態様に変形して実施しうる。   As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

本発明の効果を確認するため、図1に示す貼付け装置を、表1〜3の仕様に基づき試作するとともに、試作した貼付け装置を用い、凹量(Tmax −Tc)を違えた断面M字状の種々のトレッドゴム部材G(図8(A)に示す。)をトレッド成形ドラムDに貼り付けてトレッドリングを形成した。そして、そのときの空気溜まりの発生率、トレッドリングの傷の発生状況、ジョイント不良の発生状況を調査し互いに比較した。なお各トレッドゴム部材Gとも、最大厚さ部Ga間の巾WGは115mmであった。   In order to confirm the effect of the present invention, the pasting apparatus shown in FIG. 1 was made on the basis of the specifications shown in Tables 1 to 3, and using the prototyped pasting apparatus, the concave amount (Tmax−Tc) was varied. These tread rubber members G (shown in FIG. 8A) were attached to a tread molding drum D to form a tread ring. Then, the occurrence rate of air pockets at that time, the occurrence of scratches on the tread ring, and the occurrence of joint defects were investigated and compared with each other. In each tread rubber member G, the width WG between the maximum thickness portions Ga was 115 mm.

具体的には、表1では、凸量Pが一定(=3.0mm)、かつ中央面部の巾Wcのみ5mm、10mm、30mm、50mm、70mm、90mm、100mmと違えた7種類の貼付け装置を用い、それぞれ凹量(Tmax −Tc)が0.5mm、1.0mm、1.5mm、2.0mm、2.5mm、3.0mmと異なる6種類のトレッドゴム部材Gをトレッド成形ドラムDに貼り付けてトレッドリングを形成した。そしてその時の空気溜まりの発生率、トレッドリングの傷の発生の有無を検査した。   Specifically, in Table 1, seven types of pasting apparatuses in which the convex amount P is constant (= 3.0 mm) and the width Wc of the central surface portion is different from 5 mm, 10 mm, 30 mm, 50 mm, 70 mm, 90 mm, and 100 mm are shown. 6 types of tread rubber members G, each having a concave amount (Tmax-Tc) of 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, and 3.0 mm, are pasted on the tread molding drum D. To form a tread ring. At that time, the occurrence rate of air pockets and the presence or absence of scratches on the tread ring were examined.

「空気溜まりの発生率」は、トレッドリングを10000本形成したときの発生率であって、空気溜まりは、トレッドリングの目視検査によってその発生の有無をチェックした。叉「トレッドリングの傷」は、トレッドリングの外周面(トレッド面)における傷の発生の有無を目視検査によって検査し、全数において傷深さが0.5mm以下の場合をOK、0.5mmより大な傷を含む場合をNGとした。   The “occurrence rate of air pockets” is an occurrence rate when 10,000 tread rings are formed, and the presence or absence of the air pools was checked by visual inspection of the tread rings. For “tread ring scratches”, the presence or absence of scratches on the outer peripheral surface (tread surface) of the tread ring is inspected by visual inspection. The case where a large scratch was included was determined as NG.

叉表2では、中央面部の巾Wcが一定(=30mm)、かつ凸量Pのみ0.5mm、1.0mm、1.5mm、2.0mm、2.5mmと違えた5種類の貼付け装置を用い、それぞれ凹量(Tmax −Tc)が0.5mm、1.0mm、1.5mm、2.0mm、2.5mm、3.5mmと異なる6種類のトレッドゴム部材Gをトレッド成形ドラムDに貼り付けてトレッドリングを形成した。そしてその時の空気溜まりの発生率を検査した。   Table 2 shows five types of pasting devices in which the width Wc of the central surface is constant (= 30 mm) and only the convex amount P is different from 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, and 2.5 mm. 6 types of tread rubber members G, each having a concave amount (Tmax-Tc) of 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, and 3.5 mm, are pasted on the tread molding drum D. To form a tread ring. And the occurrence rate of the air pocket at that time was inspected.

叉表3では、中央面部の巾Wcが一定(=30mm)、かつ凸量Pのみ2mm、4mm、6mm、8mm、10mmと違えた5種類の貼付け装置を用い、それぞれ凹量(Tmax −Tc)が0.5mm、1.0mm、1.5mm、2.0mm、2.5mm、3.5mmと異なる6種類のトレッドゴム部材Gをトレッド成形ドラムDに貼り付けてトレッドリングを形成した。そしてその時のジョイント不良の発生状況を検査した。「ジョイント不良」は、トレッドゴム部材Gの周方向両端面をジョイントした際の、端面間での隙間の発生状況を目視検査によってチェックし
全数において隙間が1mm以下の場合をOK、1mmより大な隙間を含む場合をNGとした。
In Table 3, the width Wc of the central surface portion is constant (= 30 mm), and the convex amount P is different from 2 mm, 4 mm, 6 mm, 8 mm, and 10 mm. 6 types of tread rubber members G different from 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, and 3.5 mm were attached to the tread molding drum D to form a tread ring. Then, the occurrence of joint failure at that time was inspected. “Joint failure” is a visual inspection to check the occurrence of gaps between the end faces of the tread rubber member G in the circumferential direction. The case where a gap was included was determined as NG.

Figure 0006055371
Figure 0006055371

Figure 0006055371
Figure 0006055371

Figure 0006055371
Figure 0006055371

表1、2に示すように、テーブル本体を標準状態と下傾動状態とで切り換え可能に構成することにより、空気溜まりの発生を抑制しうるのが確認できる。叉この空気溜まりの発生抑制の効果は、中央面部の巾Wcが小さくなる程、叉凸量Pが大きくなる程高まる。しかし、前記巾Wcが10mmを下回ると、トレッドゴム部材Gを強く押し付けることによる傷がトレッドリングの外周面に発生し易くなるという問題が生じる。また表3に示すように、前記凸量Pが6mmを超えると、トレッドゴム部材Gの巾方向の湾曲の度合いが高まるため、一周巻きした時、巾方向両側で周長が不足傾向となってジョイント不良が発生し易くなるのが確認できる。   As shown in Tables 1 and 2, it can be confirmed that the occurrence of air pockets can be suppressed by configuring the table body to be switchable between the standard state and the downward tilt state. The effect of suppressing the occurrence of air trapping increases as the fork convex amount P increases as the width Wc of the central surface portion decreases. However, if the width Wc is less than 10 mm, there is a problem that scratches caused by strongly pressing the tread rubber member G easily occur on the outer peripheral surface of the tread ring. Further, as shown in Table 3, when the convex amount P exceeds 6 mm, the degree of curvature in the width direction of the tread rubber member G increases, and therefore when the circumference is wound, the circumference tends to be insufficient on both sides in the width direction. It can be confirmed that joint defects are likely to occur.

叉表2に示すように、前記空気溜まりの発生抑制の効果は、凸量Pが小さすぎても、叉トレッドゴム部材Gの凹量(Tmax −Tc)が大きすぎても低下し、特に凸量Pと凹量(Tmax −Tc)とが下記式(1)の関係にあるとき、優れた発生抑制の効果が発揮されるのが確認できる。
差{(Tmax −Tc)−P}≦1.5 −−−(1)
As shown in Table 2, the effect of suppressing the occurrence of air pockets decreases even if the convex amount P is too small or the concave amount (Tmax-Tc) of the forked tread rubber member G is too large. When the amount P and the concave amount (Tmax−Tc) are in the relationship of the following formula (1), it can be confirmed that an excellent generation suppression effect is exhibited.
Difference {(Tmax−Tc) −P} ≦ 1.5 −−− (1)

1 貼付け装置
2 テーブル台
3 テーブル移動台
13 テーブル本体
13c センタテーブル部分
13s サイドテーブル部分
26 傾動手段
26A バネ体
26B シリンダ
Co 巾中心線
D トレッド成形ドラム
F 長さ方向
G トレッドゴム部材
Ga 最大厚さ部
j 軸心
S 載置面
Sc 中央面部
Ss 側面部
Y1 標準状態
Y2 下傾動状態
DESCRIPTION OF SYMBOLS 1 Pasting apparatus 2 Table base 3 Table moving base 13 Table main body 13c Center table part 13s Side table part 26 Tilt means 26A Spring body 26B Cylinder Co Width centerline D Tread molding drum F Length direction G Tread rubber member Ga Maximum thickness part j Shaft center S Placement surface Sc Center surface portion Ss Side surface portion Y1 Standard state Y2 Down tilt state

Claims (5)

長さ方向に定寸切りされたトレッドゴム部材を、回転するトレッド成形ドラムの外周面に、その下方側から貼り付けるトレッドゴム部材の貼付け装置であって、
搬入されるトレッドゴム部材を載置する載置面を上面に設けたテーブル台と、
前記テーブル台を長さ方向に移動可能に保持するとともに、前記移動により、前記載置面上のトレッドゴム部材を、回転するトレッド成形ドラムの外周面にその下方側から貼り付けるテーブル移動台とを具え、
しかも前記テーブル台は、
巾方向中央側に配されかつ上面が前記載置面の中央面部をなすセンタテーブル部分と、このセンタテーブル部分の両外側に配されかつ上面が前記載置面の側面部をなすとともに一側縁部が長さ方向にのびる軸心廻りで傾動可能に枢支されるサイドテーブル部分とからなるテーブル本体、及び
前記サイドテーブル部分を、前記側面部が前記中央面部と面一となる標準状態と、前記側面部が中央面部よりも下方となる下傾動状態との間で傾動させる傾動手段を具えることを特徴とするトレッドゴム部材の貼付け装置。
A tread rubber member affixing device for affixing a tread rubber member cut in a lengthwise direction to the outer peripheral surface of a rotating tread molding drum from its lower side,
A table base provided with a placement surface on which the tread rubber member to be carried is placed;
A table moving table for holding the table table movably in the length direction and attaching the tread rubber member on the mounting surface to the outer peripheral surface of the rotating tread molding drum from the lower side by the movement. Prepared,
Moreover, the table base is
A center table portion disposed on the center side in the width direction and having an upper surface forming the central surface portion of the mounting surface, and an outer surface disposed on both outer sides of the center table portion and the upper surface forming side surfaces of the mounting surface and one side edge A table body comprising a side table portion pivotally supported so as to be tiltable about an axis extending in the length direction, and a standard state in which the side table portion is flush with the central surface portion, A tread rubber member pasting device comprising tilting means for tilting between the side surface portion and a downward tilting state in which the side surface portion is below the center surface portion.
前記サイドテーブル部分は、巾方向外側の側縁部が枢支されることを特徴とする請求項1記載のトレッドゴム部材の貼付け装置。   The tread rubber member attaching device according to claim 1, wherein the side table portion is pivotally supported at a side edge on the outer side in the width direction. 前記傾動手段は、前記サイドテーブル部分を下向きに付勢するバネ体と、前記サイドテーブル部分を上向きに押し上げて前記標準状態に維持するシリンダとを具えることを特徴とする請求項1叉は2記載のトレッドゴム部材の貼付け装置。   3. The tilting means includes a spring body that urges the side table portion downward, and a cylinder that pushes the side table portion upward to maintain the side table portion in the standard state. The tread rubber member pasting device. 前記トレッドゴム部材は、巾中心線の両側にゴム厚さが最大となる最大厚さ部を具えるとともに、前記中央面部の巾Wcは、10mm以上かつ前記最大厚さ部間の巾WGの60%以下であることを特徴とする請求項1〜3の何れかに記載のトレッドゴム部材の貼付け装置。   The tread rubber member has a maximum thickness portion where the rubber thickness is maximized on both sides of the width center line, and the width Wc of the central surface portion is 10 mm or more and a width WG of 60 between the maximum thickness portions. The tread rubber member pasting device according to claim 1, wherein the tread rubber member pasting device is at most%. 前記下傾動状態において、前記側面部がトレッドゴム部材の前記最大厚さ部に接する接触位置から前記中央面部までの上下方向の距離である凸量P、及び前記トレッドゴム部材における巾中心線でのゴム厚さTcと前記最大厚さ部でのゴム厚さTmax との差であるトレッドゴム部材Gの凹量(Tmax −Tc)は、下記式(1)を充足することを特徴とする請求項4記載のトレッドゴム部材の貼付け装置。
{(Tmax −Tc)−P}≦1.5 −−−(1)
In the downward tilted state, a convex amount P that is a vertical distance from a contact position where the side surface portion is in contact with the maximum thickness portion of the tread rubber member to the central surface portion, and a width center line in the tread rubber member The concave amount (Tmax-Tc) of the tread rubber member G, which is the difference between the rubber thickness Tc and the rubber thickness Tmax at the maximum thickness portion, satisfies the following formula (1). 4. A tread rubber member pasting device according to 4.
{(Tmax−Tc) −P} ≦ 1.5 −−− (1)
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