JPS58107323A - Holder for green tube molding machine - Google Patents

Holder for green tube molding machine

Info

Publication number
JPS58107323A
JPS58107323A JP56206688A JP20668881A JPS58107323A JP S58107323 A JPS58107323 A JP S58107323A JP 56206688 A JP56206688 A JP 56206688A JP 20668881 A JP20668881 A JP 20668881A JP S58107323 A JPS58107323 A JP S58107323A
Authority
JP
Japan
Prior art keywords
holder
joint
molding machine
elastic member
tube
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.)
Granted
Application number
JP56206688A
Other languages
Japanese (ja)
Other versions
JPH029930B2 (en
Inventor
Yoshinori Hirose
広瀬　嘉徳
Tsuneki Tsumori
津森　恒己
Mitsuo Sakurai
光雄 桜井
Tsutomu Ohashi
勉 大橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP56206688A priority Critical patent/JPS58107323A/en
Publication of JPS58107323A publication Critical patent/JPS58107323A/en
Publication of JPH029930B2 publication Critical patent/JPH029930B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B29C66/52211—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other for making endless tubular articles, e.g. endless inner tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73751—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized
    • B29C66/73752—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized the to-be-joined areas of both parts to be joined being uncured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/24—Endless tubes, e.g. inner tubes for pneumatic tyres
    • B29L2023/245—Inner tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To provide a titled holder which can increase the degree of deformation of an elastic member at the time of butting the holder which mounts the member by forming an oblique surface on the front surface of a back plate of the holder and prevent an open slice from occurring. CONSTITUTION:Oblique surfaces 15, 25 are respectively formed on the front surfaces of the back plates 12, 22 of upper and lower molds 10 and 20, and elastic members 14, 24 are respectively mounted on the surfaces 15, 25. It is preferred to set the oblique angle theta to larger than 11 deg. and smaller than 20 deg.. The degrees of deformation of the members 14, 24 at the time of butting the holder become large, thereby increasing the thickness of the bonded part 42 of an intermediate member 30.

Description

【発明の詳細な説明】 この発明は、グリーンチューブ成型機用ホルダーに関し
、とくに、中空円筒状に押し出された未加硫Ｊム材料を
所定の長さに切断して作られた中間部材の両端部を無端
状に接合する成型機用ホルダーにおいて、該ホルダーの
ノ々ツクプレートの前面に傾斜面を形成して弾性部材を
取付けることによシ、ホルダーの突き合わせ時における
弾性部材の変形を容易にするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a holder for a green tube molding machine, and more particularly, to a holder for a green tube molding machine, and in particular to a holder for a green tube molding machine. In a holder for a molding machine that joins parts in an endless manner, by forming an inclined surface on the front surface of the notch plate of the holder and attaching an elastic member, the elastic member can be easily deformed when the holders are butted together. It is something to do.

−４に、加硫前のタイヤ用チューブ（グリーンチューブ
）は、未加硫ゴム材料を均一な厚さの中空円筒状に押じ
出ＩＬ　、これを冷却して所定の長さに切断して中空扁
平状の中間部材を作り、この中間部材にノ々ルブを装着
したのち両端部を接合して無端の環状体としたものであ
り、このグリーンチューブの成１型機として、従来から
第１図に示すようなホルダーが使用されている。同図は
、中間部材の両端部をノセットジョイント法によって接
合する場合に使用する左右二対の上型ホルダー１０と下
型ホルダー２０との一方を示し、それぞれの支台１１，
２１に、ノζツクプレー）１２．２２が固着され、パッ
クプレー）１２　、２２の前面にはゴム等の弾性部材１
４　、２４が接着されている。中間部材を接合するとき
は、左右側９（１１に離間させた下型ホルダー２０の保
持部材２６の間に中間部材（図示せず）の両端部を丁型
ホルダー２０の弾性部材２４の前端面よシも約１ｃｒｎ
引出した状態にして装着し、次いで、上型ホルダー１０
を降下して下型ホルダー２０との間で中間部材の両端部
を挟圧固定し１図示しないナイフによって中間部材の両
端部をそれぞれ約Ｉｍ残る程度に切断して新たな接合端
面を作シ、左右両側からホルダーを突き合わせ、接合端
面を圧着させて無端状に接合する。-4. Tire tubes (green tubes) before vulcanization are made by extruding unvulcanized rubber material into a hollow cylindrical shape of uniform thickness, cooling it and cutting it into a predetermined length. A hollow, flat intermediate member is made, a knob knob is attached to this intermediate member, and both ends are joined to form an endless annular body. A holder as shown in the figure is used. This figure shows one of the two left and right pairs of upper mold holder 10 and lower mold holder 20 used when joining both ends of an intermediate member by the noset joint method, and each abutment 11,
21 is fixed with a no.
4 and 24 are glued together. When joining the intermediate member, connect both ends of the intermediate member (not shown) between the holding members 26 of the lower mold holder 20 separated from the left and right sides 9 (11) to the front end surface of the elastic member 24 of the knife-shaped holder 20. Yoshi is also about 1crn
Install it in the pulled out state, and then attach the upper mold holder 10.
1. Lower the lower mold holder 20 to clamp and fix both ends of the intermediate member between them, and cut both ends of the intermediate member with a knife (not shown) to the extent that approximately Im remains on each end to create a new joint end surface. The holders are butted against each other from both the left and right sides, and the joint end surfaces are crimped to form an endless joint.

中間部材の接合部は、ホルダーを突き合わせたときに弾
性部材１４．２４が圧縮されて、上型ボルダ−１０の弾
性部材Ｓ４は上方に、下型ホルダー２０！１７）弾性部
材２４は下方に、それぞれ屈曲変形するから、それぞれ
外側に隆起した形状となるが、この接合部の厚さは、弾
性部材１４　、２４の変形度によってそれぞれ異なる。At the junction of the intermediate members, when the holders are butted together, the elastic members 14 and 24 are compressed, so that the elastic member S4 of the upper mold boulder 10 is directed upward, and the elastic member 24 of the lower mold holder 20!17) is directed downward. Since each is bent and deformed, each has an outwardly raised shape, but the thickness of this joint differs depending on the degree of deformation of the elastic members 14 and 24.

ところで、従来のホルダーでは、第２図（ａ）に示すよ
うに、パックプレート１２の前面を垂直面として弾性部
材１４を接着しているため、ホルダーを突き合わせたと
きの弾性部材１４の変形度が小さく、中間部材の接合部
の厚さは、比較的薄いものとなっている。このたの、従
来のホルダーで成型されたグリーンチューブを加硫して
得られるチューブ４０は、その接合部４２の断面形状が
第２図（ｂ）に示すようなものとなってチューブ４０の
内側に突出し、接合部４２の厚さＨｂを、接合部以外の
部分４４の厚さＨａに対して必要とする厚さとすること
ができず、このようなチューブをタイヤに装着して使用
すると、接合口に応力が集中してオープンスプライスが
発生し、パンク事故を起し易いという欠点があった。− この発明は、上記の欠点を除去するためになされたもの
であり、この発明の目的は、弾性部材の突き合わせ時に
おける変形度を大きくすることができるグリーンチュー
ブ成型機用ホルダーを提供することにあり、また、この
発明の目的は、タイヤ用チューブの接合部におけるオー
プンスプライスの発生を防止できるグリーンチューブ成
型機用ホルダーを提供することにある。By the way, in the conventional holder, as shown in FIG. 2(a), since the elastic member 14 is bonded with the front surface of the pack plate 12 as a vertical surface, the degree of deformation of the elastic member 14 when the holders are butted is small. The thickness of the joint portion of the intermediate member is relatively thin. On the other hand, in the tube 40 obtained by vulcanizing the green tube molded with the conventional holder, the cross-sectional shape of the joint 42 is as shown in FIG. 2(b), and the inside of the tube 40 is The thickness Hb of the joint 42 cannot be set to the required thickness Ha of the portion 44 other than the joint, and when such a tube is attached to a tire and used, the joint This has the disadvantage that stress is concentrated at the splice, causing open splices and making punctures more likely. - This invention was made to eliminate the above-mentioned drawbacks, and an object of the invention is to provide a holder for a green tube molding machine that can increase the degree of deformation when the elastic members are butted together. Another object of the present invention is to provide a holder for a green tube molding machine that can prevent the occurrence of open splices at the joints of tire tubes.

すなわち、この発明は１図示する実施例のように、均一
な厚さの未加硫ザム材料からなる中空扁平体を所定の長
さに切断して作られた中間部材６０の両端部を、前端面
に弾性部材１４．２４’に設けたノ々ツクプレート１２
　、２２を備える左右一対の上型ホルダー１０と下型ホ
ルダー２０との間に挟着して該ホルダーを互に突き合わ
せて接合するようＫしたグリーンチューブ成型機用ホル
ダーにおいて、前記上型ホルダー１０と下型ホルダー２
０とのノ々ツクシレー）１２．２２の前面に、それぞれ
ホルダーの突き合わせ方向に対して傾斜する傾斜面１５
．２５を形成し、該傾斜面＋５．２５にそれぞれ弾性部
材１４．２４を取付けたことを特徴とするグリーンチュ
ーブ成型機用ホルダーに係る。That is, in the first embodiment of the present invention, both ends of an intermediate member 60, which is made by cutting a hollow flat body made of unvulcanized zam material with a uniform thickness into a predetermined length, are connected to the front end. Notch plate 12 provided on elastic member 14 and 24' on the surface
, 22, which is sandwiched between a pair of left and right upper mold holders 10 and lower mold holders 20 and joined by butting the holders against each other. Lower mold holder 2
On the front surface of 12.22, there are inclined surfaces 15 that are inclined with respect to the direction in which the holders meet.
．． 25, and elastic members 14 and 24 are attached to the inclined surfaces +5 and 25, respectively.

以下、この発明の実施例に９いて、図面を参照して説明
する。Hereinafter, embodiments of the present invention will be described with reference to the drawings.

第３図は、この発明の実施例を示す断面図である。上型
ホルダー１０の支台１１に固着されたノ々ツクプレート
１４の前面に、ホルダーの突き合わせ方向く前方）に対
して傾斜する傾斜面１５を形成して、この傾斜面１５に
弾性部材１４の裏面を密着させて接着しである。下型ホ
ルダー２０のノ々ツクプレート２２も＋ｑｔ様にホルダ
ーの突き合わせ方向に対して傾斜面２５を形成して弾性
部材２４が接着しである。符号６０は中間部材である。FIG. 3 is a sectional view showing an embodiment of the invention. An inclined surface 15 is formed on the front surface of the knock plate 14 fixed to the support base 11 of the upper die holder 10, and the elastic member 14 is formed on this inclined surface 15. Glue the back sides together. The notch plate 22 of the lower die holder 20 also forms an inclined surface 25 with respect to the direction in which the holders are brought together in a manner similar to +qt, and an elastic member 24 is adhered thereto. Reference numeral 60 is an intermediate member.

第４図（ａ）に上型ホルダー１０の・々ツクプレート１
２について、傾斜面１５の傾斜角度θを図示しであるが
傾斜角度θは、１１度以上であって２０度以下とするの
が望ましい。FIG. 4(a) shows the top mold holder 10 and the pick plate 1.
Regarding No. 2, the inclination angle θ of the inclined surface 15 is shown in the figure, but it is desirable that the inclination angle θ is 11 degrees or more and 20 degrees or less.

上記のように、この発明のノ々ツクプレート１２．２２
はその前面を傾斜面１５　、２５としているから、ホル
ダーの突き合わせ時における弾性部材１４．２４の変形
度が大きくなり、中間部材３０の接合部の厚さを厚くす
ることが″ｃ’ｇる。As mentioned above, the knock plate of this invention 12.22
Since the front surfaces thereof are sloped surfaces 15 and 25, the degree of deformation of the elastic members 14 and 24 when the holders are brought into contact with each other becomes large, and it becomes necessary to increase the thickness of the joint portion of the intermediate member 30.

パックプレー）１２．２２の傾斜角度を、１１度以上、
２０度以下に設定しているのは、１１度未満のような過
多な傾斜角度では、弾性部材１４．２４の変形度が十分
でなく、また、２０度を超える過大な傾斜角度にすると
、接合時における成型性が著しく悪くな−って、バック
ル発生の原因となるからである。Puck play) 12.22 slope angle of 11 degrees or more,
The reason why it is set to 20 degrees or less is because if the angle of inclination is too large, such as less than 11 degrees, the degree of deformation of the elastic member 14.24 will not be sufficient. This is because the moldability deteriorates significantly over time, causing buckling.

一般に、タイヤ用チューブの接合部の接合力は、接合部
以外の部分の抗張力の６０チ以上となるようにする必要
があり、８０チ以上が最も望ましいとされている。この
ためには、接合面の断面積を接合部以外の部分の断面積
の１５０％以上とする必要があるが、この断面積の比率
が２５０１以上になると、加硫時にノ々ツクルが発生し
て製品故障の誘因となるので、事実上の製造が困難とな
る。Generally, the bonding force at the joint of a tire tube needs to be 60 inches or more of the tensile strength of the parts other than the joint, and most preferably 80 inches or more. To achieve this, it is necessary to make the cross-sectional area of the joint surface at least 150% of the cross-sectional area of the parts other than the joint, but if the ratio of this cross-sectional area exceeds 2501, knots will occur during vulcanization. This can lead to product failure, making manufacturing difficult.

第４図（ｂ）は、この発明のホルダーによって成型され
たグリーンチューブを加硫して製造したチューブ４０の
接合部４２の断面形状を示したものであり、接合部４２
が一第２図Ｃｂ）に示した従来のチューブよシも高く隆
起し％接合部４２の裾部に接合部以外の部分４４よりも
やや薄い部分ができるが、接合部４２の厚さＨｂは、接
合部以外の部分４４の厚さＨａに比べ必要かつ十分な厚
さとなり、接合面の断面積を接合部以外の部分の断面積
の１５０％以上、２５（１未満とすることができる。FIG. 4(b) shows the cross-sectional shape of the joint 42 of the tube 40 manufactured by vulcanizing the green tube molded by the holder of the present invention.
However, the conventional tube structure shown in Fig. 2 Cb) is also raised high and there is a part at the hem of the joint 42 that is slightly thinner than the part 44 other than the joint, but the thickness Hb of the joint 42 is , the thickness is necessary and sufficient compared to the thickness Ha of the portion 44 other than the joint portion, and the cross-sectional area of the joint surface can be set to 150% or more and less than 25 (1) of the cross-sectional area of the portion other than the joint portion.

第５図は、この発明の他の実施例を示し、同図（ａ）は
、パックプレート１２の傾斜面１５の底部をパックプレ
ート１２の底面１６と直角に面取りしたものであり、第
４図の実施例のように、ノ々ツクプレート１２の傾斜面
１５と底面１６とのなす角度αが鋭角となるために発生
するおそれのある弾性部材１４の剥離や中間部材の損傷
を防止するようにしたものである。同図（ｂ）は、ノ々
ツクプレート１２の底面１６と傾斜面１５との間に段面
１７を設けて、弾性部材１４の剥離防止効果をとくに高
くしたものであり、同図（ｃ）は、ノ々ツクプレート１
２の傾斜面１５の底部を底面１６に対して反対方向に傾
斜させて面取りした場合、同図（ｄ）は、ノ々ツクプレ
ート１２の傾斜面１５の底部をなめらかな曲面で面取り
した場合をそれぞれ示し、中間部材の損傷防止効果をと
くに高くしたもの士ある。FIG. 5 shows another embodiment of the present invention, in which the bottom of the inclined surface 15 of the pack plate 12 is chamfered at right angles to the bottom surface 16 of the pack plate 12, and FIG. As in the embodiment, the angle α between the inclined surface 15 and the bottom surface 16 of the notch plate 12 is acute, so as to prevent peeling of the elastic member 14 and damage to the intermediate member, which may occur. This is what I did. FIG. 5(b) shows a step surface 17 provided between the bottom surface 16 and the inclined surface 15 of the knock plate 12 to particularly increase the effect of preventing the elastic member 14 from peeling off. FIG. is Nonotsuku Plate 1
When the bottom of the inclined surface 15 of Noknok plate 12 is chamfered so as to be inclined in the opposite direction to the bottom surface 16, FIG. Each of these methods has a particularly high effect on preventing damage to the intermediate member.

次に、この発明のホルダーによって成型したグリーンチ
ューブを加硫して製造したタイヤ用チューブと従来のタ
イヤ用チューブとについて、接合部の耐屈曲性試験を行
なった結果を第１表に示す。Next, Table 1 shows the results of a bending resistance test on the joints of a tire tube manufactured by vulcanizing a green tube molded using the holder of the present invention and a conventional tire tube.

試験方法は、ＪＩＳ６３０１加硫ザム物理試験方法に規
定する屈曲試験を採用し、試験片は、″ｊＩ８２号ダン
ベルで接合部を中心にして打抜いたものを使用した。供
試チューブのサイズは、乗用車ラジアルタイヤ用チュー
ブ１７５ル１４である。The test method adopted the bending test specified in JIS6301 vulcanized rubber physical test method, and the test piece was punched out with a JI82 dumbbell centered around the joint.The size of the test tube was as follows. This is a 175L14 tube for passenger car radial tires.

この発明のホルダーのノ々ツクプレートは、第５図（Ｃ
）に示す形状のものとし、傾斜角度θは２０度として１
面取り角度を４５度とした。The notch plate of the holder of this invention is shown in Fig. 5 (C
), and the inclination angle θ is 20 degrees.
The chamfer angle was set to 45 degrees.

第　　１　　表 第１表の結果から明らかなように、この発明によるチュ
ーブは、従来のチューブの２倍以上の接合強度を有して
いることが判る。Table 1 As is clear from the results in Table 1, the tube according to the present invention has a bonding strength that is more than twice that of the conventional tube.

以上説明したように、この発明は、グリーンチューブ成
型機用ホルダーのノ々ツクプレートの前面を傾斜面とし
て弾性部材を取付ける構成としている。したがって、こ
の発明によれば、ホルダー突き合わせ時における弾性部
材の変形度が大きくなって中間部材の接合部の厚さ會従
来よりも厚くすることができるから、タイヤ用チューブ
として加硫した場合に、タイヤ用チューブの接合面の断
面積が接合部以外の部分の断面積に対して所定の範囲内
となり、空気入りタイヤに装着して使用したときに接合
面に作用する応力が分散され、接合面のオープンスプラ
イスが減少して、パンク事故の発生を防止することが可
能となる。As explained above, in the present invention, the front surface of the notch plate of the holder for a green tube molding machine is made into an inclined surface to which an elastic member is attached. Therefore, according to the present invention, the degree of deformation of the elastic member when the holders are brought together is increased, and the thickness of the joint part of the intermediate member can be made thicker than before, so that when vulcanized as a tire tube, The cross-sectional area of the joint surface of the tire tube is within a predetermined range compared to the cross-sectional area of the parts other than the joint, and the stress acting on the joint surface when used in a pneumatic tire is dispersed. The number of open splices is reduced, making it possible to prevent puncture accidents.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、グリーンチューブ成型機用ホルダーの斜視図
、第２図（ａ）は、従来のホルダーの・々ツクプレート
と弾性部材とを示す断面図、第２図（ｂ）は、従来のタ
イヤ用チューブの接合部を示す断面図、第３図は、この
発明の実′ｌ１ｆＡ例を示す断面図。 第４図（ａ）は、第３図のノ々ツクプレートと弾性部材
とを示す断面図、第４図（ｂ）は、この発明によるタイ
ヤ用チューブの接合部゛を示す断面図、第５図（ａ）な
いしくｄ）は、それぞれとの発明の他の実流側を示す断
面図である。 図中、１０は上型ホルダτ、２０は下型ホルダー、１２
．２２はノ々ツクプレート、１４　、２４は弾性部材、
１５．２５はノ々ツクプレートの傾斜面、３０は中間部
材である。 時打出願人　　　横浜ザム株式会社 代理人　弁理士　　　森　　　哲　也 弁理士　　　内　藤　嘉　昭 弁理士　　　清　水　　　正 第１図 ２４　　　２２ ゴ　２図FIG. 1 is a perspective view of a holder for a green tube molding machine, FIG. 2(a) is a sectional view showing the contact plate and elastic member of the conventional holder, and FIG. 2(b) is a sectional view of the conventional holder. FIG. 3 is a cross-sectional view showing a joint part of a tire tube; FIG. 3 is a cross-sectional view showing an actual example of the present invention. 4(a) is a cross-sectional view showing the knock plate and the elastic member of FIG. 3, FIG. 4(b) is a cross-sectional view showing the joint part of the tire tube according to the present invention, and FIG. Figures (a) to d) are sectional views showing other actual flow sides of the invention. In the figure, 10 is the upper mold holder τ, 20 is the lower mold holder, 12
．． 22 is a knock plate, 14 and 24 are elastic members,
15. 25 is an inclined surface of the knock plate, and 30 is an intermediate member. Tokiuchi Applicant Yokohama ZAM Co., Ltd. Agent Patent Attorney Tetsuya Mori Patent Attorney Yoshiaki Naito Patent Attorney Tadashi Shimizu Figure 1 24 22 Go Figure 2

Claims (1)

【特許請求の範囲】[Claims] 均一な厚さの未加硫ゴム材料からなる中空扁平体を所定
の長さに切断して作られた中間部材の両端部を、前端面
に弾性部材を設けたノ々ツクプレートを備える左右一対
の上型ホルダーと下型ホルダーとの間に挟着して、該ホ
ルダーを互に突き合わせて接合するようにしたグリーン
チューブ成型機用ホルダーにおいて、前記上型ホルダー
と下型ホルダーとのパックプレートの前面に、それぞれ
ホルダーの突き合わせ方向に対して傾斜する傾斜面を形
成し、該傾斜面にそれぞれ弾性部材を取付けたことを特
徴とするグリーンチューブ成型機用ホルダー。Both ends of an intermediate member made by cutting a hollow flat body made of unvulcanized rubber material of uniform thickness to a predetermined length are used as a pair of left and right plates equipped with an elastic member on the front end surface. In a holder for a green tube molding machine which is sandwiched between an upper die holder and a lower die holder and the holders are joined by butting each other, a pack plate of the upper die holder and the lower die holder is A holder for a green tube molding machine, characterized in that a front surface is formed with an inclined surface that is inclined with respect to the direction in which the holders meet, and an elastic member is attached to each of the inclined surfaces.
JP56206688A 1981-12-21 1981-12-21 Holder for green tube molding machine Granted JPS58107323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56206688A JPS58107323A (en) 1981-12-21 1981-12-21 Holder for green tube molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56206688A JPS58107323A (en) 1981-12-21 1981-12-21 Holder for green tube molding machine

Publications (2)

Publication Number Publication Date
JPS58107323A true JPS58107323A (en) 1983-06-27
JPH029930B2 JPH029930B2 (en) 1990-03-06

Family

ID=16527460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56206688A Granted JPS58107323A (en) 1981-12-21 1981-12-21 Holder for green tube molding machine

Country Status (1)

Country Link
JP (1) JPS58107323A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008018984A (en) * 2006-07-14 2008-01-31 Sharp Corp Pallet-integrated packaging box
WO2019239681A1 (en) * 2018-06-11 2019-12-19 横浜ゴム株式会社 Rubber sheet member joining device and method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5159980A (en) * 1974-11-20 1976-05-25 Kobe Steel Ltd Shiitojozairyono setsugohohoto sochi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5159980A (en) * 1974-11-20 1976-05-25 Kobe Steel Ltd Shiitojozairyono setsugohohoto sochi

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008018984A (en) * 2006-07-14 2008-01-31 Sharp Corp Pallet-integrated packaging box
WO2019239681A1 (en) * 2018-06-11 2019-12-19 横浜ゴム株式会社 Rubber sheet member joining device and method
JP2019214144A (en) * 2018-06-11 2019-12-19 横浜ゴム株式会社 Joint device and method for rubber sheet member
US11433623B2 (en) 2018-06-11 2022-09-06 The Yokohama Rubber Co., Ltd. Rubber sheet member joining device and method

Also Published As

Publication number Publication date
JPH029930B2 (en) 1990-03-06

Similar Documents

Publication Publication Date Title
DE112006000971B4 (en) Pneumatic tire and method of making one
US2244557A (en) Method of producing tear resisting rubber sheeting
KR100297466B1 (en) Manufacturing method of diaphragm for use in electroacoustic transducers
JPS58107323A (en) Holder for green tube molding machine
JPS6343125Y2 (en)
JPH06137426A (en) Diaphragm member and manufacture thereof
JP2528189B2 (en) Pneumatic tire
JP2667497B2 (en) Automobile tire molding method
JPS5856838A (en) Tube for tire
JP3743542B2 (en) Method for producing molded product with fine hollow pipe
JPH01208203A (en) Manufacture of spike tire and tread member thereof
EP0884169B1 (en) Rubber element for a tyre and a method of manufacturing the same
CN218929103U (en) Double faced adhesive tape type sound absorbing cotton for tire
JPH0410415B2 (en)
JP2922251B2 (en) Branch hose manufacturing method
JP2003019929A (en) Trim product, and manufacturing method therefor
JPH0247002Y2 (en)
CN213056049U (en) Thermal touch joint device of thermoplastic elastomer inner tube and inner tube
JPH11245303A (en) Holding die for tire tube bonding
JPH05296349A (en) Manufacture of divided boot for universal joint
JP2002274124A (en) Retreaded tire and manufacturing method of retreaded tire
JPH06270196A (en) Integrally molding method for cone and edge for speaker
US1585900A (en) Bead core and manufacture thereof
JP2906099B2 (en) Manufacturing method of pneumatic radial tire
JPH0669722B2 (en) Method for manufacturing tire tube