JPH0137261B2 - - Google Patents
Info
- Publication number
- JPH0137261B2 JPH0137261B2 JP56067132A JP6713281A JPH0137261B2 JP H0137261 B2 JPH0137261 B2 JP H0137261B2 JP 56067132 A JP56067132 A JP 56067132A JP 6713281 A JP6713281 A JP 6713281A JP H0137261 B2 JPH0137261 B2 JP H0137261B2
- Authority
- JP
- Japan
- Prior art keywords
- band
- tire
- holding means
- rubber material
- shaped rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 115
- 230000007246 mechanism Effects 0.000 claims description 38
- 238000000465 moulding Methods 0.000 claims description 30
- 238000003825 pressing Methods 0.000 claims description 18
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007723 transport mechanism Effects 0.000 description 2
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/30—Applying the layers; Guiding or stretching the layers during application
- B29D30/3007—Applying the layers; Guiding or stretching the layers during application by feeding a sheet perpendicular to the drum axis and joining the ends to form an annular element
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
Description
【発明の詳細な説明】
本発明は比較的剛性の低いゴムチユーフアー、
サイドトレツド、ブレーカーアンダークツシヨン
など又はそれらをいくつか組合わせたタイヤ製造
用帯状ゴム材料をタイヤ成型ドラムに正確に巻付
けるための方法及び装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a rubber tube with relatively low rigidity;
The present invention relates to a method and apparatus for accurately winding a rubber band material for tire manufacturing, such as a side tread, a breaker undercut, or some combination thereof, onto a tire building drum.
タイヤ製造業界においてはタイヤ製造工程を自
動化し、生産性を高め、品質のすぐれたタイヤを
人手にたよらず製造することが望まれている。特
に未加硫ゴム材料やその他の部材をタイヤ成型ド
ラムに巻付けてグリーンタイヤ(加硫する前のタ
イヤ)を製造する成型工程では多数の柔軟な部材
を正確にタイヤ成型ドラムに巻付けなければなら
ないため作業が複雑で高度な技術を必要としてい
た。このような剛性の低い前述のような帯状ゴム
材料をタイヤ成型ドラムに正確に巻付ける技術を
自動化することは従来極めて困難であつた、な
お、これに関する従来技術としては特開昭54−
131681号公報に記載されたものがあるが、帯状ゴ
ム材料をタイヤ成型ドラムに巻付ける間、帯状ゴ
ム材料に十分な張力を与えつづけることが出来な
いことや、正確な位置決めジヨイントが出来ない
などの問題点があつた。 In the tire manufacturing industry, it is desired to automate the tire manufacturing process, increase productivity, and manufacture tires of excellent quality without relying on human labor. In particular, in the molding process where unvulcanized rubber materials and other parts are wrapped around a tire-molding drum to produce green tires (tires before vulcanization), a large number of flexible parts must be accurately wrapped around the tire-molding drum. Because of this, the work was complicated and required advanced technology. Conventionally, it has been extremely difficult to automate the technology of accurately wrapping the above-mentioned band-shaped rubber material with low rigidity around a tire-building drum.
There is a method described in Publication No. 131681, but there are problems such as the inability to keep applying sufficient tension to the rubber band material while wrapping the rubber band material around the tire-molding drum, and the inability to accurately position the joint. There was a problem.
本発明は成型工程において帯状ゴム材料、特に
剛性の低い帯状ゴム材料をタイヤ成型ドラムに人
手にたよらず正確に巻付けるための方法及び装置
を提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for accurately wrapping a rubber band material, particularly a rubber band material with low rigidity, around a tire molding drum in a molding process without relying on human hands.
このような目的は、第1保持手段によつて帯状
ゴム材料の先端を該先端が切断されたときの状態
で保持しつつタイヤ成型ドラムへ移送し、圧着す
る段階と、帯状ゴム材料から第1保持手段を離隔
させる段階と、帯状ゴム材料に張力を与えつつタ
イヤ成型ドラムを回転させ、帯状ゴム材料を所定
長さだけタイヤ成型ドラムに巻付ける段階と、タ
イヤ成型ドラムに巻付け中の帯状ゴム材料を第2
保持手段で保持する段階と、第2保持手段により
保持された部分の後方側近傍で帯状ゴム材料を切
断し帯状ゴム材料の後端を切断されたままの状態
で第2保持手段により保持する段階と、第2保持
手段によつて帯状ゴム材料に張力を与えながらタ
イヤ成型ドラムを回転させて残りの帯状ゴム材料
をタイヤ成型ドラムに巻付ける段階と、第2保持
手段によつて帯状ゴム材料の後端を成型ドラムに
圧着する段階と、から成ることを特徴とする、タ
イヤ成型ドラムに帯状ゴム材料を巻付ける方法、
および、タイヤ成型ドラムと、帯状ゴム材料の先
端を該先端が切断されたときの状態で保持する第
1保持手段と、帯状ゴム材料の先端を保持した第
1保持手段をタイヤ成型ドラムまで移動させ帯状
ゴム材料をタイヤ成型ドラムに圧着した後タイヤ
成型ドラムからこれを離隔させる第1保持手段移
動機構とタイヤ成型ドラムを回転させて帯状ゴム
材料を所定長さタイヤ成型ドラムに巻付ける間帯
状ゴム材料に張力を与えるテンシヨン機構と、タ
イヤ成型ドラムに巻付け中の帯状ゴム材料を保持
する第2保持手段と、第2保持手段より後方側で
これの近傍の帯状ゴム材料を切断し第2保持手段
により切断されたままの状態で保持されている部
分を帯状ゴム材料の後端にする切断機構と、帯状
ゴム材料の後端を保持した第2保持手段をタイヤ
成型ドラムの回転中帯状ゴム材料に張力が生じる
よう移動させてタイヤ成型ドラムに残りの帯状ゴ
ム材料を巻付けた後帯状ゴム材料の後端をタイヤ
成型ドラムに圧着させる第2保持手段移動機構
と、を備えたことを特徴とするタイヤ成型ドラム
に帯状ゴム材料を巻付ける装置により達成するこ
とができる。 These purposes include the steps of holding the leading end of the band-shaped rubber material in the state in which it was cut by the first holding means, transferring it to the tire-building drum and press-bonding it; and separating the holding means; rotating the tire building drum while applying tension to the rubber band material; and winding the rubber band material by a predetermined length around the tire building drum; 2nd material
a step of holding the rubber band material with the holding means; and a step of cutting the rubber band material near the rear side of the portion held by the second holding means and holding the rear end of the rubber band material in the cut state with the second holding means. and a step of rotating the tire building drum while applying tension to the band-shaped rubber material by the second holding means to wrap the remaining band-shaped rubber material around the tire-building drum; crimping the trailing end to the forming drum;
and moving the tire building drum, the first holding means for holding the tip of the band-shaped rubber material in the state in which the tip was cut, and the first holding means holding the tip of the band-shaped rubber material to the tire building drum. A first holding means movement mechanism that presses the rubber band material onto the tire building drum and then separates it from the tire building drum; and a mechanism that rotates the tire building drum to wrap the rubber band material to a predetermined length around the tire building drum. a tension mechanism for applying tension to the tire forming drum; a second holding means for holding the band-shaped rubber material being wound around the tire-building drum; A cutting mechanism that converts the part held in the cut state by the cutting mechanism into the rear end of the rubber band material, and a second holding means that holds the rear end of the rubber band material to the rubber band material while the tire forming drum is rotating. A second holding means moving mechanism that moves the remaining rubber band material to create tension and wraps the remaining rubber band material around the tire building drum, and then presses the rear end of the rubber band material to the tire building drum. This can be achieved by a device that wraps a strip of rubber material around a tire building drum.
次に本発明の装置の一実施例を図面を参照して
説明する。第1図は本発明の装置の一実施例の正
面図、第2図はその側面図である。1は回転自在
でかつ拡縮径自在なタイヤ成型ドラムであり、こ
のタイヤ成型ドラム1に各種の部材を巻付けた
り、取付けたりすることにより、グリーンタイヤ
を製造する。2はベースであり、このベース2上
にはフレーム3,4が設置されている。フレーム
3上には一対のパルスモータ5,6が設置され、
各パルスモータ5,6の出力軸には帯状ゴム材料
7の進行方向と平行なスクリユーシヤフト8,9
がそれぞれ連結されている。10,11スクリユ
ーシヤフト8,9と平行なガイドシヤフトであ
り、前記スクリユーシヤフト8,9およびガイド
シヤフト10,11の両端はそれぞれ軸受12,
13により回転自在に支持されている。14はス
クリユーシヤフト8およびガイドシヤフト10,
11に支持された第1移動台、15はスクリユー
シヤフト9およびガイドシヤフト9およびガイド
シヤフト10,11に支持された第2移動台であ
る。そして前記第1、第2の移動台は14,15
はパルスモータ5,6によるスクリユーシヤフト
8,9の回転に伴ないそれぞれ独立して移動す
る。第1、第2移動台14,15の上面には昇降
手段16,17,18,19例えば流体シリンダ
が設置され、昇降手段16,17には第1保持手
段20が、昇降手段18,19には第2保持手段
21がそれぞれ取り付けられている。そして、こ
れらの第1、第2保持手段20,21は昇降手段
16,17,18,19の作動によりそれぞれ独
立して垂直に移動する。前述したパルスモータ
5、スクリユーシヤフト8、第1移動台14、昇
降手段16,17は全体として第1保持手段移動
機構22を構成し、また、パルスモータ6、スク
リユーシヤフト9、第2移動台15、昇降手段1
8,19は第2保持手段移動機構23を構成す
る。第3図及び第4図は第1保持手段20を示し
ており、同図において24は昇降手段16,17
に取り付けられた台であり、この台24上にはそ
の両側端が閉塞され、補強層を含むゴム等の材質
で形成された弾性管状体25が支持され、この弾
性管状体25は帯状ゴム材料7の幅方向、すなわ
ち、タイヤ成型ドラム1の軸方向、に延在すると
ともに帯状ゴム材料7の幅より長い。この弾性管
状体25には図示していない空気孔が形成され、
この空気孔は圧縮空気源に連通している。弾性管
状体25上面には弾性管状体25とほぼ同長の弾
性板26が貼着されており、この弾性板26は加
硫ゴム等からなり、その上面は滑らかな表面とな
つている。なお、この弾性板26は弾性管状体2
5の上面が滑らかであればなくてもよい。第2保
持手段21も第5図に示すように台27、弾性管
状体28、弾性板29から構成されているが、こ
れらについては第1保持手段20と同様であるの
で説明を省略する。第1図及び第2図に示される
ようにフレーム4には押付機構30及び切断機構
31が設けられている。押付機構30はフレーム
4に取り付けられた空気シリンダー32,33と
これらの空気シリンダー32,33のロツド3
4,35先端に取り付けられた押付板36から成
つている。第5図に示すように押付板36が下降
するのは第1保持手段20及び第2保持手段21
が押付板36の下方に位置した時であり、この時
第1保持手段20及び第2保持手段21の弾性管
状体25,28内の空気は図示されない空気孔よ
り排出される。このようにして未加硫の帯状ゴム
材料7は弾性板26,29の上面がなめらかな表
面を有しているため、あたかも吸着されたように
弾性板26,29に保持されることになる。切断
機構31は第2図に示されるようなカツター3
7、固定ブロツク38及びカツター駆動手段39
より成つている。カツター駆動手段39はフレー
ム4上に固定されたモータ40を有する。フレー
ム4に固定された一対の軸受41,42には弾性
管状体25と平行なドライブシヤフト43の両端
が回転自在に支持され、このドライブシヤフト4
3には前記モータ40の出力軸からベルト44を
介して動力が伝達される。45,46はドライブ
シヤフト43と平行なガイドシヤフトである。こ
れらのガイドシヤフト45,46の両端は前記軸
受41,42にそれぞれ支持されている。47は
ドライブシヤフト43およびガイドシヤフト4
5,46に支持されたスライダであり、このスラ
イダ47はドライブシヤフト43の回転によりガ
イドシヤフト45,46に沿つて移動する。スラ
イダ47には一対のアーム48,49の基端が取
り付けられるとともに空気シリンダ50の後端が
回動自在に連絡されている。前記固定ブロツク3
8はアーム48,49の先端にピン51を介して
回動自在に連絡されるとともに空気シリンダ50
のピストンロツド52の先端に回動自在に連結さ
れている。このため空気シリンダ50が作動する
と固定ブロツク38はピン51を中心に回動す
る。前記カウンター37は固定ブロツク38に固
定されており、このカツター37は必要に応じて
固定ブロツク38に取り付けられた加熱機構(図
示していない)により高温の定常状態に加熱され
る。53は帯状ゴム材料7を搬送する搬送機構で
あり、ローラコンベアーなどの適当な手段から成
り立つている。54はテンシヨン機構であり、本
実施例ではブレーキロール54である。ブレーキ
ロール54は搬送機構53に取付けられており、
タイヤ成型ドラム1に帯状ゴム材料7を巻付ける
際に適度な張力を帯状ゴム材料7に与えるように
なつている。テンシヨン機構54は必要に応じて
さらに帯状ゴム材料7を挾むように別のローラを
設けたり、さらにタイヤ成型ドラム1の回転に応
じた回転ブレーキロール54が行なうように制御
しても良い。なお本実施例においては図示されて
いない制御機構があり、この制御機構は、タイヤ
成型ドラム1、第1、第2保持手段移動機構2
2,23、押付機構30、切断機構31等の動作
を制御している。 Next, one embodiment of the apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a front view of an embodiment of the apparatus of the present invention, and FIG. 2 is a side view thereof. Reference numeral 1 denotes a tire molding drum which is rotatable and whose diameter can be expanded or contracted, and a green tire is manufactured by winding or attaching various members to this tire molding drum 1. 2 is a base, and frames 3 and 4 are installed on this base 2. A pair of pulse motors 5 and 6 are installed on the frame 3,
The output shaft of each pulse motor 5, 6 has a screw shaft 8, 9 parallel to the traveling direction of the band-shaped rubber material 7.
are connected to each other. 10, 11 are guide shafts parallel to the screw shafts 8, 9, and both ends of the screw shafts 8, 9 and guide shafts 10, 11 are provided with bearings 12, 11, respectively.
It is rotatably supported by 13. 14 is a screw shaft 8 and a guide shaft 10,
A first movable base 11 is supported, and a second movable base 15 is supported by the screw shaft 9, the guide shaft 9, and the guide shafts 10 and 11. The first and second movable tables are 14 and 15.
are moved independently as the screw shafts 8, 9 are rotated by the pulse motors 5, 6. Lifting means 16, 17, 18, 19, for example, a fluid cylinder, are installed on the upper surfaces of the first and second movable tables 14, 15. A second holding means 21 is attached to each. These first and second holding means 20 and 21 are vertically moved independently by the operation of the elevating means 16, 17, 18, and 19, respectively. The aforementioned pulse motor 5, screw shaft 8, first moving table 14, and lifting means 16 and 17 constitute the first holding means moving mechanism 22 as a whole, and the pulse motor 6, screw shaft 9, and second moving Platform 15, lifting means 1
8 and 19 constitute a second holding means moving mechanism 23. 3 and 4 show the first holding means 20, in which 24 indicates the elevating means 16, 17.
On this stand 24 is supported an elastic tubular body 25 which is closed at both ends and is made of a material such as rubber and includes a reinforcing layer, and this elastic tubular body 25 is made of a band-shaped rubber material. 7, that is, the axial direction of the tire building drum 1, and is longer than the width of the band-shaped rubber material 7. Air holes (not shown) are formed in this elastic tubular body 25,
This air hole communicates with a source of compressed air. An elastic plate 26 having approximately the same length as the elastic tubular body 25 is attached to the upper surface of the elastic tubular body 25. The elastic plate 26 is made of vulcanized rubber or the like, and has a smooth upper surface. Note that this elastic plate 26 is connected to the elastic tubular body 2.
It is not necessary as long as the upper surface of 5 is smooth. As shown in FIG. 5, the second holding means 21 is also composed of a stand 27, an elastic tubular body 28, and an elastic plate 29, but since these are the same as the first holding means 20, a description thereof will be omitted. As shown in FIGS. 1 and 2, the frame 4 is provided with a pressing mechanism 30 and a cutting mechanism 31. The pressing mechanism 30 includes air cylinders 32 and 33 attached to the frame 4 and rods 3 of these air cylinders 32 and 33.
It consists of a pressing plate 36 attached to the tips of 4 and 35. As shown in FIG. 5, the pressing plate 36 is lowered by the first holding means 20 and the second holding means 21.
is located below the pressing plate 36, and at this time, the air in the elastic tubular bodies 25, 28 of the first holding means 20 and the second holding means 21 is discharged from air holes (not shown). In this way, the unvulcanized band-shaped rubber material 7 is held by the elastic plates 26, 29 as if by suction, since the upper surfaces of the elastic plates 26, 29 have smooth surfaces. The cutting mechanism 31 is a cutter 3 as shown in FIG.
7. Fixed block 38 and cutter drive means 39
It consists of The cutter drive means 39 has a motor 40 fixed on the frame 4. A pair of bearings 41 and 42 fixed to the frame 4 rotatably support both ends of a drive shaft 43 parallel to the elastic tubular body 25.
Power is transmitted to the motor 3 from the output shaft of the motor 40 via a belt 44. 45 and 46 are guide shafts parallel to the drive shaft 43. Both ends of these guide shafts 45, 46 are supported by the bearings 41, 42, respectively. 47 is a drive shaft 43 and a guide shaft 4
5 and 46, and this slider 47 moves along guide shafts 45 and 46 as drive shaft 43 rotates. The base ends of a pair of arms 48 and 49 are attached to the slider 47, and the rear end of an air cylinder 50 is rotatably connected to the slider 47. Said fixed block 3
8 is rotatably connected to the tips of the arms 48 and 49 via a pin 51, and is connected to an air cylinder 50.
The piston rod 52 is rotatably connected to the tip of the piston rod 52. Therefore, when the air cylinder 50 is actuated, the fixed block 38 rotates about the pin 51. The counter 37 is fixed to a fixed block 38, and the cutter 37 is heated to a steady state at a high temperature by a heating mechanism (not shown) attached to the fixed block 38, if necessary. Reference numeral 53 denotes a conveyance mechanism for conveying the band-shaped rubber material 7, and is comprised of suitable means such as a roller conveyor. 54 is a tension mechanism, which is a brake roll 54 in this embodiment. The brake roll 54 is attached to the conveyance mechanism 53,
Appropriate tension is applied to the rubber band material 7 when the rubber band material 7 is wound around the tire molding drum 1. The tension mechanism 54 may be further provided with another roller to sandwich the band-shaped rubber material 7, or may be controlled so that the rotation of the brake roll 54 is performed in accordance with the rotation of the tire building drum 1, if necessary. In this embodiment, there is a control mechanism not shown, and this control mechanism includes the tire building drum 1, the first and second holding means moving mechanisms 2
2, 23, the pressing mechanism 30, the cutting mechanism 31, etc. are controlled.
次に前述した実施例の装置を用いて本発明の方
法の一実施例を説明する。 Next, an embodiment of the method of the present invention will be described using the apparatus of the embodiment described above.
まず準備段階において、他の部材が巻付けられ
たタイヤ成型ドラム1に対し、たとえばゴムテエ
ーフアー、サイドトレツド、ブレーカーアンダー
クツシヨンを一体とした帯状ゴム材料7をストツ
クロール(図示せず)から巻出し、ブレーキロー
ル54、搬送機構53上を通過させ、あらかじめ
押付機構30の直下に待機している第1保持手段
20及び第2保持手段21上へその先端を移送す
る。次に空気シリンダー32,33のロツド3
4,35を突出させ、押付板36により帯状ゴム
材料7を第1保持手段20及び第2保持手段21
の弾性板26,29に押付ける。この時弾性管状
体25,28内の空気は排出され弾性管状体2
5,28がつぶれており、しかも、帯状ゴム材料
7が表面の滑らかな弾性板26,29に強く押付
けられることにより、あたかも表面に吸着された
かの如く、帯状ゴム材料7は弾性板26,29に
タイヤ成型ドラム1と反対側の下面のみにて保持
される。次に押付板36が上昇するとともに、予
め帯状ゴム材料7の幅方向一方へ寄せられていた
スライダ47は、空気シリンダ50のピストンロ
ツド52が所定位置まで突出されて固定ブロツク
38が回動された後ガイドシヤフト45,46に
沿つてモータ40により回転されるドライブシヤ
フト43の回転により帯状ゴム材料7の幅方向他
方へ移動する。この時第2図に示されるように、
必要に応じて予め一定の高温度に保たれる。カツ
ター37は第1保持手段20及び第2保持手段2
1の間を通過しながら帯状ゴム材料7を切断す
る。この結果、帯状ゴム材料7の先端はカツター
37によつて切断されたときの状態で第1保持段
20により保持される。また、第2保持手段21
上の帯状ゴム材料7の切片は取り去り、かつ、第
2保持手段21は下降し、図の左側に移動する。
これで準備が完了する。次に第6図によつて作動
を順次説明する。第6図においてはタイヤ成型ド
ラム1の下端と搬送機構53上の帯状ゴム材料7
とは同一水平面上に位置されている。第1段階に
おいて、第6a図に示すように、まず第1保持手
段20が下降し、次に、第1保持手段20は帯状
ゴム材料7の先端を保持しつつ、図左側へ移動
し、タイヤ成型ドラム1の直下で停止する。次
に、第1保持手段20が上昇し帯状ゴム材料7の
先端をタイヤ成型ドラム1に押付ける。このと
き、弾性管状体25はその内部に空気が導入され
て膨んでいるため、第4図に示すようにタイヤ成
型ドラム1に他の材料が巻付き、タイヤ成型ドラ
ム1の外表面に軸方向に凹凸がある場合であつて
も、その形状に沿つて弾性管状体25が変形す
る。このため、タイヤ成型ドラム1下端のドラム
軸線方向全体にわたり、帯状ゴム材料7を均一の
力で押付けることが出来る。このように、既に他
の未加硫材料がタイヤ成型ドラム1に巻付けられ
ている場合には、この材料と帯状ゴム材料7との
接着力の方が第1保持手段20の弾性板26と帯
状ゴム材料7との接着力より強いため、帯状ゴム
材料7は弾性板26から離れ未加硫材料に接着す
る。又他の未加硫材料がタイヤ成型ドラム1に巻
付けられていない場合においても、タイヤ成型ド
ラム1の表面全体、もしくは1部を弾性板26の
表面よりなめらかな表面にすれば帯状ゴム材料7
を弾性板26から成型ドラム1に転移させること
が出来る。このときの状態が第6b図に示されて
いる。ここで帯状ゴム材料7の厚さが幅方向に均
一でない場合、もしくは帯状ゴム材料7がいくつ
かの異なる材質の部分から成る場合には、例えば
一般にシヨートサイドと呼ばれている現象が発生
する。これは帯状ゴム材料7の幅方向両端部が中
央部に比して長手方向に短かくなる現象であり、
タイヤ成型の自動化を困難にしている1要因とな
つている。しかしながら、帯状ゴム材料7の先端
は帯状ゴム材料7の幅方向に延在するとともに該
帯状ゴム材料7の幅以上の長さを有する第1保持
手段20に切断されたときの状態のまま保持され
てタイヤ成型ドラム1に密着させられるので、こ
のシヨートサイドは生じることはない。次に第2
段階においてタイヤ成型ドラム1は回転を始め
る。これにより、ブレーキロール54により張力
を受けながら帯状ゴム材料7がタイヤ成型ドラム
1の周囲に巻付けられていく。このとき、第1保
持手段20はタイヤ成型ドラム1の周速度と同一
速度で第6b図の左方向へ移動しその結果第6c
図の状態となる。このままの状態でタイヤ成型ド
ラム1は回転を続け、例えばタイヤ成型ドラム1
が3/4回転して帯状ゴム材料7が所定長さ巻付い
た時その回転を一時停止する。この停止期間に第
1保持手段20は下降した後、第2保持手段21
とともに第6図dに示されるような押付板36の
直下に移動する。このとき、カツター37は第2
保持手段21と第1保持手段20との間隙直上に
位置している。次に第3段階において、第6e図
に示されるように第1保持手段20及び第2保持
手段21が共に上昇するとともに押付板36が下
降し、帯状ゴム材料7を弾性板26,29に押付
ける。この結果、帯状ゴム材料7は弾性板26,
29に前述のように密着し第1、第2保持手段2
0,21に保持される。次に第4段階において、
押付板36が上昇した後、カツター37により弾
性板26,29の中間部分で、すなわち第2保持
手段21の後方側近傍で、帯状ゴム材料7が第6
f図に示されるように切断され、成型ドラム1に
巻付け中の帯状ゴム材料7の後端が切断されたま
まの状態で第2保持手段21に保持される。この
切断位置は、切断によつて切り離された帯状ゴム
材料7が所望の長さ、すなわち成型ドラム1周長
よりわずかに短かい長さ、となるように位置にあ
らかじめ設定されている。なお1個の押付板36
の代わりに第1保持手段20及び第2保持手段2
1のそれぞれに対し、すなわち、一対の押付板を
設け、帯状ゴム材料7を弾性板26,29に押付
けたままカツター37で切断するようにしても良
いことは言うまでもない。次に、第5段階におい
て、タイヤ成型ドラム1は再度回転を始め、タイ
ヤ成型ドラム1に帯状ゴム材料7の残りの部分が
巻付けられる。このとき、図示されていない制御
機構により未だ巻付けられていない帯状ゴム材料
7の残りの部分が張力を受けるように、タイヤ成
型ドラム1の回転速度と第2保持手段21の図左
方向への移動速度が制御される。次に第6段階に
おいて、第2保持手段21が第6g図に示される
ようにタイヤ成型ドラム1の下端に到達した時、
弾性管状体28内に空気を導入して、これを膨張
させる。この結果、帯状ゴム材料7の後端はタイ
ヤ成型ドラム1に移し換えられて密着される。こ
のとき、帯状ゴム材料7の先端と後端は突き合わ
され両者が重なり合つたり両者間に過大な隙間が
あつたりすることはない。このように帯状ゴム材
料7の巻付けが完了した時、第2保持手段がタイ
ヤ成型ドラム1の周上の予め決定された位置に到
達するように制御することによつて、仮令、タイ
ヤ成型ドラム1の径が既に巻付られている材料の
厚みにより多少変化しても、この径の変化により
帯状ゴム材料の後端貼付け位置が変化することは
ない。このため、帯状ゴム材料7の先端と後端と
を常に正確に突き合わせることができる。次に、
第6h図に示す位置へタイヤ成型ドラム1の周速
度と等しい速さで第2保持手段21を図左方向へ
移動させる。以上説明した第1〜6段階が巻付け
作動の1サイクルであり、以後このサイクルを繰
り返すことにより、タイヤ成型ドラム1に繰り返
し帯状ゴム材料7を巻付けることが出来る。第6
a〜h図ではタイヤ成型ドラム1の外周を1回転
するように帯状ゴム材料7をタイヤ成型ドラム1
に巻付けたが、複数回転するように巻付けても良
いことは言うまでもない。なお、本実施例ではタ
イヤ成型ドラム1を3/4回転した後一時停止させ、
この停止期間中に帯状ゴム材料7を切断したが、
他の実施例として、第1及び第2保持手段20,
21、押付機構30、切断機構31などが図の左
方向へ帯状ゴム材料7と同速度で移動する機構に
なつていれば、この停止動作は不要となる。 First, in a preparatory stage, a belt-shaped rubber material 7 that integrates, for example, a rubber tread, a side tread, and a breaker undercut is unwound from a stock roll (not shown) onto the tire molding drum 1 on which other members are wound. The tip is passed over the roll 54 and the transport mechanism 53, and transferred onto the first holding means 20 and the second holding means 21, which are waiting in advance directly below the pressing mechanism 30. Next, rod 3 of air cylinders 32 and 33
4 and 35 to protrude, and the band-shaped rubber material 7 is held by the first holding means 20 and the second holding means 21 by the pressing plate 36.
the elastic plates 26, 29 of. At this time, the air inside the elastic tubular bodies 25 and 28 is exhausted and the elastic tubular body 2
5 and 28 are crushed, and the band-shaped rubber material 7 is strongly pressed against the elastic plates 26, 29 with smooth surfaces, so that the band-shaped rubber material 7 is attached to the elastic plates 26, 29 as if it were adsorbed to the surface. It is held only by the lower surface on the opposite side from the tire building drum 1. Next, as the pressing plate 36 rises, the slider 47, which had been moved to one side in the width direction of the band-shaped rubber material 7, is moved after the piston rod 52 of the air cylinder 50 is projected to a predetermined position and the fixed block 38 is rotated. The belt-shaped rubber material 7 is moved to the other side in the width direction by the rotation of the drive shaft 43 rotated by the motor 40 along the guide shafts 45 and 46 . At this time, as shown in Figure 2,
The temperature is maintained at a constant high temperature in advance if necessary. The cutter 37 includes the first holding means 20 and the second holding means 2.
The band-shaped rubber material 7 is cut while passing through the space between the rubber bands 1 and 1. As a result, the tip of the band-shaped rubber material 7 is held by the first holding stage 20 in the state in which it was cut by the cutter 37. In addition, the second holding means 21
The upper strip of rubber material 7 is removed and the second holding means 21 is lowered and moved to the left in the figure.
The preparation is now complete. Next, the operation will be sequentially explained with reference to FIG. In FIG. 6, the lower end of the tire molding drum 1 and the belt-shaped rubber material 7 on the conveying mechanism 53 are shown.
are located on the same horizontal plane. In the first stage, as shown in FIG. 6a, first the first holding means 20 is lowered, and then, while holding the tip of the band-shaped rubber material 7, the first holding means 20 moves to the left side of the figure, and the tire It stops directly below the forming drum 1. Next, the first holding means 20 rises and presses the tip of the band-shaped rubber material 7 against the tire building drum 1. At this time, air is introduced into the elastic tubular body 25 and it expands, so other materials are wrapped around the tire building drum 1 as shown in FIG. Even if there are irregularities, the elastic tubular body 25 deforms along the irregularities. Therefore, the band-shaped rubber material 7 can be pressed with a uniform force over the entire lower end of the tire building drum 1 in the drum axial direction. In this way, when another unvulcanized material is already wrapped around the tire building drum 1, the adhesive force between this material and the band-shaped rubber material 7 is stronger than that between the elastic plate 26 of the first holding means 20. Since the adhesive force is stronger than that with the band-shaped rubber material 7, the band-shaped rubber material 7 separates from the elastic plate 26 and adheres to the unvulcanized material. Even if other unvulcanized materials are not wrapped around the tire building drum 1, the band-shaped rubber material 7 can be formed by making the entire surface of the tire building drum 1, or a portion thereof, smoother than the surface of the elastic plate 26.
can be transferred from the elastic plate 26 to the molding drum 1. The state at this time is shown in FIG. 6b. Here, if the thickness of the band-shaped rubber material 7 is not uniform in the width direction, or if the band-shaped rubber material 7 is composed of several parts made of different materials, for example, a phenomenon generally called short side occurs. This is a phenomenon in which both ends of the band-shaped rubber material 7 in the width direction become shorter in the longitudinal direction than the central part.
This is one of the factors that makes it difficult to automate tire molding. However, the tip of the band-shaped rubber material 7 is held in the state in which it was cut by the first holding means 20 that extends in the width direction of the band-shaped rubber material 7 and has a length greater than the width of the band-shaped rubber material 7. Since the tire is brought into close contact with the tire molding drum 1, this short side will not occur. Then the second
At this stage, the tire building drum 1 begins to rotate. As a result, the band-shaped rubber material 7 is wound around the tire molding drum 1 while being subjected to tension by the brake roll 54. At this time, the first holding means 20 moves to the left in FIG. 6b at the same speed as the circumferential speed of the tire building drum 1, and as a result,
It will be in the state shown in the figure. The tire molding drum 1 continues to rotate in this state, for example, the tire molding drum 1
rotates 3/4 and when the band-shaped rubber material 7 is wrapped around a predetermined length, the rotation is temporarily stopped. During this stop period, the first holding means 20 is lowered, and then the second holding means 21
At the same time, it moves directly below the pressing plate 36 as shown in FIG. 6d. At this time, the cutter 37 is
It is located directly above the gap between the holding means 21 and the first holding means 20. Next, in the third step, as shown in FIG. 6e, both the first holding means 20 and the second holding means 21 rise, and the pressing plate 36 descends to press the band-shaped rubber material 7 against the elastic plates 26, 29. wear. As a result, the band-shaped rubber material 7 has elastic plates 26,
29 as described above, the first and second holding means 2
It is held at 0,21. Next, in the fourth stage,
After the pressing plate 36 is raised, the cutter 37 cuts the band-shaped rubber material 7 into the sixth position at the middle part of the elastic plates 26 and 29, that is, near the rear side of the second holding means 21.
The rear end of the band-shaped rubber material 7, which is cut as shown in FIG. This cutting position is set in advance so that the band-shaped rubber material 7 separated by cutting has a desired length, that is, a length slightly shorter than the circumferential length of one molding drum. In addition, one pressing plate 36
Instead of the first holding means 20 and the second holding means 2
It goes without saying that a pair of pressing plates may be provided for each of the elastic plates 26 and 29, and the band-shaped rubber material 7 may be cut with the cutter 37 while being pressed against the elastic plates 26 and 29. Next, in the fifth step, the tire building drum 1 starts rotating again and the remaining part of the band-shaped rubber material 7 is wrapped around the tire building drum 1. At this time, a control mechanism (not shown) controls the rotational speed of the tire building drum 1 and the second holding means 21 in the left direction in the figure so that the remaining portion of the band-shaped rubber material 7 that has not been wrapped yet receives tension. Movement speed is controlled. Next, in the sixth stage, when the second holding means 21 reaches the lower end of the tire building drum 1 as shown in Fig. 6g,
Air is introduced into the elastic tubular body 28 to inflate it. As a result, the rear end of the band-shaped rubber material 7 is transferred to the tire molding drum 1 and brought into close contact therewith. At this time, the front end and the rear end of the band-shaped rubber material 7 are butted against each other, so that they do not overlap or there is no excessive gap between them. When the wrapping of the band-shaped rubber material 7 is completed in this way, the second holding means is controlled so as to reach a predetermined position on the circumference of the tire-building drum 1. Even if the diameter of rubber band 1 changes somewhat depending on the thickness of the material already wrapped, the position at which the rear end of the rubber band material is attached will not change due to this change in diameter. Therefore, the leading end and the trailing end of the band-shaped rubber material 7 can always be matched accurately. next,
The second holding means 21 is moved to the left in the figure at a speed equal to the circumferential speed of the tire building drum 1 to the position shown in FIG. 6h. The first to sixth stages described above are one cycle of the winding operation, and by repeating this cycle thereafter, the band-shaped rubber material 7 can be repeatedly wound around the tire molding drum 1. 6th
In the figures a to h, the band-shaped rubber material 7 is rotated around the outer circumference of the tire molding drum 1 once.
It goes without saying that it may be wound in multiple rotations. In this embodiment, the tire molding drum 1 is rotated 3/4 and then stopped temporarily.
During this stop period, the band-shaped rubber material 7 was cut, but
In another embodiment, the first and second holding means 20,
21, if the pressing mechanism 30, cutting mechanism 31, etc. are mechanisms that move to the left in the figure at the same speed as the band-shaped rubber material 7, this stopping operation will be unnecessary.
以上述べたように、この発明によれば、帯状ゴ
ム材料の先端および後端をそれぞれ切断された状
態に保持拘速して張力を与えながらタイヤ成型ド
ラムに巻付けることが出来るので、従来不可能と
思われていた比較的剛性の低い帯状ゴム材料をタ
イヤ成型ドラムに正確に巻付けることができる。 As described above, according to the present invention, it is possible to wrap the rubber band around the tire molding drum while holding the leading and trailing ends of the rubber band in a cut state and applying tension, which was previously impossible. It is now possible to accurately wrap a band-shaped rubber material, which was thought to have relatively low rigidity, around a tire-building drum.
第1図は本発明の一実施例を示すその正面図、
第2図はその側面図、第3図は帯状ゴム材料をタ
イヤ成型ドラムに圧着したときの第1保持手段近
傍の断面図、第4図は第3図の−矢視断面
図、第5図は帯状ゴム材料を押圧機構によつて第
1、第2保持手段に押付けたときの状態を示す断
面図、第6a〜h図は作動を説明する説明図であ
る。
1……タイヤ成型ドラム、7……帯状ゴム材
料、20……第1保持手段、21……第2保持手
段、22……第1保持手段移動機構、23……第
2保持手段移動機構、30……押付機構、31…
…切断機構、53……搬送機構、54……テンシ
ヨン機構。
FIG. 1 is a front view showing an embodiment of the present invention;
Fig. 2 is a side view thereof, Fig. 3 is a sectional view of the vicinity of the first holding means when the band-shaped rubber material is pressed onto the tire molding drum, Fig. 4 is a sectional view taken along the - arrow in Fig. 3, and Fig. 5 6 is a sectional view showing a state when the band-shaped rubber material is pressed against the first and second holding means by the pressing mechanism, and FIGS. 6a to 6h are explanatory diagrams for explaining the operation. DESCRIPTION OF SYMBOLS 1... Tire molding drum, 7... Band-shaped rubber material, 20... First holding means, 21... Second holding means, 22... First holding means moving mechanism, 23... Second holding means moving mechanism, 30...pressing mechanism, 31...
...cutting mechanism, 53...transport mechanism, 54...tension mechanism.
Claims (1)
該先端が切断されたときの状態で保持しつつタイ
ヤ成型ドラムへ移送し、圧着する段階と、帯状ゴ
ム材料から第1保持手段を離隔させる段階と、帯
状ゴム材料に張力を与えつつタイヤ成型ドラムを
回転させ、帯状ゴム材料を所定長さだけタイヤ成
型ドラムに巻付ける段階と、タイヤ成型ドラムに
巻付け中の帯状ゴム材料を第2保持手段で保持す
る段階と、第2保持手段により保持された部分の
後方側近傍で帯状ゴム材料を切断し帯状ゴム材料
の後端を切断されたままの状態で第2保持手段に
より保持する段階と、第2保持手段によつて帯状
ゴム材料に張力を与えながらタイヤ成型ドラムを
回転させて残りの帯状ゴム材料をタイヤ成型ドラ
ムに巻付ける段階と、第2保持手段によつて帯状
ゴム材料の後端を成型ドラムに圧着する段階と、
から成ることを特徴とするタイヤ成型ドラムに帯
状ゴム材料を巻付ける方法。 2 タイヤ成型ドラムと、帯状ゴム材料の先端を
該先端が切断されたときの状態で保持する第1保
持手段と、帯状ゴム材料の先端を保持した第1保
持手段をタイヤ成型ドラムまで移動させ帯状ゴム
材料をタイヤ成型ドラムに圧着した後タイヤ成型
ドラムからこれを隔離させる第1保持手段移動機
構と、タイヤ成型ドラムを回転させて帯状ゴム材
料を所定長さタイヤ成型ドラムに巻付ける間帯状
ゴム材料に張力を与えるテンシヨン機構と、タイ
ヤ成型ドラムに巻付け中の帯状ゴム材料を保持す
る第2保持手段と、第2保持手段より後方側でこ
れの近傍の帯状ゴム材料を切断し、第2保持手段
により切断されたままの状態で保持されている部
分を帯状ゴム材料の後端にする切断機構と、帯状
ゴム材料の後端を保持した第2保持手段をタイヤ
成型ドラムの回転中帯状ゴム材料に張力が生じる
よう移動させてタイヤ成型ドラムに残りの帯状ゴ
ム材料を巻付けた後帯状ゴム材料の後端をタイヤ
成型ドラムに圧着させる第2保持手段移動機構
と、を備えたことを特徴とするタイヤ成型ドラム
に帯状ゴム材料を巻付ける装置。[Scope of Claims] 1. The step of holding the tip of the band-shaped rubber material in the state in which the tip was cut by the first holding means and transferring it to a tire-building drum and press-bonding it; and 1. A step of separating the holding means, a step of rotating the tire building drum while applying tension to the band-shaped rubber material, and a step of wrapping the band-shaped rubber material around the tire-building drum by a predetermined length; holding the rubber material with the second holding means; cutting the band-shaped rubber material near the rear side of the portion held by the second holding means; and holding the rubber band-shaped material in a second state with the rear end remaining cut; holding the rubber band material by a second holding means, rotating the tire building drum while applying tension to the rubber band material by a second holding means, and wrapping the remaining rubber band material around the tire building drum; pressing the rear end of the rubber band material onto a forming drum;
A method for wrapping a band-shaped rubber material around a tire-forming drum, characterized in that the method comprises: 2. A tire building drum, a first holding means that holds the tip of the band-shaped rubber material in the state when the tip is cut, and a first holding means that holds the tip of the band-shaped rubber material are moved to the tire-building drum and the band-shaped rubber material is cut. a first holding means moving mechanism for separating the rubber material from the tire building drum after the rubber material is pressed onto the tire building drum; and a belt-shaped rubber material for rotating the tire building drum to wrap the rubber band material to a predetermined length around the tire building drum. a tension mechanism for applying tension to the tire forming drum; a second holding means for holding the band-shaped rubber material being wound around the tire-building drum; A cutting mechanism that converts the part held in the cut state by the means into a rear end of the rubber band material; and a second holding means that holds the rear end of the rubber band material while the tire molding drum is rotating. and a second holding means moving mechanism that presses the rear end of the band-shaped rubber material onto the tire-molding drum after wrapping the remaining band-shaped rubber material around the tire-molding drum by moving the rubber band-shaped material so as to generate tension on the tire-molding drum. A device that wraps rubber band material around a tire molding drum.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56067132A JPS57181840A (en) | 1981-05-01 | 1981-05-01 | Winding method and apparatus of belt like rubber material to tire forming drum |
US06/373,247 US4465536A (en) | 1981-05-01 | 1982-04-29 | Method of and apparatus for feeding rubbery strip to tire-building drum |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56067132A JPS57181840A (en) | 1981-05-01 | 1981-05-01 | Winding method and apparatus of belt like rubber material to tire forming drum |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57181840A JPS57181840A (en) | 1982-11-09 |
JPH0137261B2 true JPH0137261B2 (en) | 1989-08-04 |
Family
ID=13336059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56067132A Granted JPS57181840A (en) | 1981-05-01 | 1981-05-01 | Winding method and apparatus of belt like rubber material to tire forming drum |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57181840A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62119028A (en) * | 1985-11-19 | 1987-05-30 | Mitsubishi Heavy Ind Ltd | Bonding device for unvulcanized rubber member |
JPS6490736A (en) * | 1987-09-30 | 1989-04-07 | Sumitomo Rubber Ind | Apex mounting and its device |
US4900383A (en) * | 1988-04-19 | 1990-02-13 | The Boeing Company | Convolutely lined and wrapped composite tubes |
US5077106A (en) * | 1988-04-19 | 1991-12-31 | The Boeing Company | Convolutely lined and wrapped composite tubes |
JPH0347743A (en) * | 1989-04-18 | 1991-02-28 | Bridgestone Corp | Method and apparatus for winding band-like member |
JP5473682B2 (en) * | 2010-03-05 | 2014-04-16 | 株式会社ブリヂストン | Winding rubber member winding method and apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5798341A (en) * | 1980-12-11 | 1982-06-18 | Yokohama Rubber Co Ltd:The | Method and apparatus for winding of tire shaping material in form of flexible sheet |
-
1981
- 1981-05-01 JP JP56067132A patent/JPS57181840A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5798341A (en) * | 1980-12-11 | 1982-06-18 | Yokohama Rubber Co Ltd:The | Method and apparatus for winding of tire shaping material in form of flexible sheet |
Also Published As
Publication number | Publication date |
---|---|
JPS57181840A (en) | 1982-11-09 |
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