JP4631504B2 - Mold for vulcanization of laminated rubber structure and method for producing laminated rubber structure - Google Patents

Mold for vulcanization of laminated rubber structure and method for producing laminated rubber structure Download PDF

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JP4631504B2
JP4631504B2 JP2005098293A JP2005098293A JP4631504B2 JP 4631504 B2 JP4631504 B2 JP 4631504B2 JP 2005098293 A JP2005098293 A JP 2005098293A JP 2005098293 A JP2005098293 A JP 2005098293A JP 4631504 B2 JP4631504 B2 JP 4631504B2
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stacking direction
positioning
mold
shaft
intermediate plate
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JP2006272855A (en
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紅子 鈴木
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Yokohama Rubber Co Ltd
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Description

本発明は、例えば橋梁や建築物等の構造物を支持するために用いられる積層ゴム構造体の加硫用金型及び積層ゴム構造体の製造方法に関するものである。   The present invention relates to a vulcanization mold for a laminated rubber structure used for supporting a structure such as a bridge or a building, and a method for producing the laminated rubber structure.

一般に、この種の積層ゴム構造体は、複数の未加硫ゴム部材及び中間板を加硫用金型内に上下方向に交互に積層して加硫することにより成型される。また、加硫用金型内において各中間板が水平方向に位置ずれを生ずると、各中間板が互いに水平方向に位置ずれを生ずることにより鉛直剛性や水平剛性等の免震性能が低下するとともに、加硫ゴムから中間板が露出して外観上好ましくないため、各中間板に位置決め孔を設けるとともに各中間板の位置決め孔に上下方向に延びるように形成された位置決めシャフトを挿通し、各中間板が水平方向に位置ずれを生じないようにしたものが知られている(例えば、特許文献1参照。)。
特開平10−115344号公報
Generally, this type of laminated rubber structure is molded by alternately laminating a plurality of unvulcanized rubber members and intermediate plates in a vulcanizing mold in the vertical direction. In addition, if each intermediate plate is displaced in the horizontal direction in the vulcanizing mold, the intermediate plates are displaced in the horizontal direction, thereby reducing the seismic isolation performance such as vertical rigidity and horizontal rigidity. Since the intermediate plate is exposed from the vulcanized rubber and is not preferable in appearance, a positioning hole is provided in each intermediate plate and a positioning shaft formed so as to extend in the vertical direction is inserted into each intermediate plate. It is known that the plate is not displaced in the horizontal direction (for example, see Patent Document 1).
JP-A-10-115344

ところで、前記製造方法では、加硫用金型内に各未加硫ゴム部材及び各中間板を配置して加硫用金型を上方から加圧すると、加硫用金型内の未加硫ゴム部材が水平方向内側から外側に向かって流動するとともに水平方向外側において上方または下方に流動するため、中間板に上方または下方に向かう大きな力が加わり、中間板の上下方向への位置ずれや中間板の変形が生ずる。このため、各中間板の上下方向の間隔が所定の間隔ではなくなり、外観上好ましくないという問題点があった。   By the way, in the said manufacturing method, when each unvulcanized rubber member and each intermediate board are arrange | positioned in a vulcanization metal mold | die and a vulcanization metal mold | die is pressurized from the upper direction, the unvulcanized | cured material in a vulcanization metal mold | die. Since the rubber member flows from the inner side to the outer side in the horizontal direction and flows upward or downward in the outer side in the horizontal direction, a large force is applied to the intermediate plate in the upward or downward direction. Deformation of the plate occurs. For this reason, there is a problem in that the vertical interval between the intermediate plates is not a predetermined interval, which is not preferable in appearance.

本発明は前記問題点に鑑みてなされたものであり、その目的とするところは、各中間板が積層方向と直交する方向に位置ずれを生ずることがなく、しかも加硫用金型の加圧に伴う未加硫ゴム部材の流動によって各中間板の積層方向の間隔が変わることのない積層ゴム構造体の加硫用金型及び積層ゴム構造体の製造方法を提供することにある。   The present invention has been made in view of the above problems, and the object of the present invention is that each intermediate plate is not displaced in the direction perpendicular to the stacking direction, and the pressurization of the vulcanizing mold is performed. Another object of the present invention is to provide a vulcanization mold for a laminated rubber structure and a method for producing the laminated rubber structure in which the interval in the lamination direction of each intermediate plate does not change due to the flow of the unvulcanized rubber member.

本発明は前記目的を達成するために、複数の未加硫ゴム部材及び中間板を交互に積層するとともに、その積層方向両端にそれぞれ端面板を配置して加硫成型する積層ゴム構造体の製造に用いる加硫用金型において、前記各中間板にそれぞれ設けられて積層方向に配列される位置決め孔に積層方向一方及び他方からそれぞれ挿通可能な一対の位置決めシャフトを備え、各位置決めシャフトの少なくとも一部を積層方向外側から積層方向内側に向かって徐々に外形が小さくなるように形成している。   In order to achieve the above object, the present invention manufactures a laminated rubber structure in which a plurality of unvulcanized rubber members and intermediate plates are alternately laminated, and end face plates are arranged at both ends in the laminating direction and vulcanized and molded. The vulcanizing mold used in the present invention includes a pair of positioning shafts that can be inserted from the one and the other in the stacking direction into the positioning holes that are respectively provided in the intermediate plates and arranged in the stacking direction, and at least one of the positioning shafts. The outer shape is gradually reduced from the outer side in the stacking direction toward the inner side in the stacking direction.

これにより、各位置決め孔に位置決めシャフトが積層方向一方及び他方からそれぞれ挿通されることから、各中間板が積層方向と直交する方向に位置ずれを生ずることがない。また、各位置決めシャフトは積層方向外側から積層方向内側に向かって徐々に外形が小さくなるように形成されていることから、各中間板を位置決め孔が積層方向外側から積層方向内側に向かって内形の大きなものから順次配列されるように加硫用金型内に配置することにより、各位置決め孔がその内形と同等の外形を有する位置決めシャフトの外形部にそれぞれ積層方向内側から係止し、各中間板は位置決め孔が位置決めシャフトと係止する係止位置よりも積層方向外側への移動をそれぞれ規制される。   Thereby, since the positioning shaft is inserted into each positioning hole from one side and the other in the stacking direction, each intermediate plate does not shift in the direction orthogonal to the stacking direction. In addition, each positioning shaft is formed so that the outer shape gradually decreases from the outer side in the stacking direction toward the inner side in the stacking direction. By positioning in the vulcanization mold so as to be arranged in order from the largest of each, each positioning hole is locked to the outer portion of the positioning shaft having an outer shape equivalent to the inner shape from the inside in the stacking direction, Each intermediate plate is restricted from moving outward in the stacking direction from the locking position where the positioning hole locks with the positioning shaft.

また、本発明は、複数の未加硫ゴム部材及び中間板を交互に積層するとともに、その積層方向両端にそれぞれ端面板を配置して加硫成型する積層ゴム構造体の製造に用いる加硫用金型において、前記各中間板にそれぞれ設けられて積層方向に配列される位置決め孔に積層方向に挿通可能な位置決めシャフトを備え、前記位置決めシャフトに少なくとも一部の中間板に積層方向一方のみから係止可能な係止部を設け、前記位置決めシャフトに、その径方向に出没可能に形成され、径方向外側に突出することにより中間板の積層方向一方の面に係止可能な係止部材と、係止部材を位置決めシャフトの径方向外側に向かって付勢する付勢部材とを設け、係止部材を、位置決めシャフトが中間板の位置決め孔に積層方向他方から挿入されると付勢部材の付勢力に抗して位置決めシャフトの径方向内側に移動するように形成している。 Further, the present invention provides a vulcanizing material for use in the production of a laminated rubber structure in which a plurality of unvulcanized rubber members and intermediate plates are alternately laminated, and end face plates are respectively arranged at both ends in the laminating direction and vulcanized and molded. The mold includes a positioning shaft that is provided in each intermediate plate and can be inserted into the positioning holes arranged in the stacking direction in the stacking direction, and at least a part of the intermediate plate is engaged with the positioning shaft from only one in the stacking direction. only set the stop possible engagement portion, the positioning shaft is retractable formed in the radial direction, and lockable locking member on one side stacking direction of the intermediate plate by radially outwardly projecting And a biasing member that biases the locking member toward the radially outer side of the positioning shaft, and when the locking member is inserted into the positioning hole of the intermediate plate from the other side in the stacking direction, the biasing member It is formed so as against the biasing force to move radially inward of the positioning shaft.

これにより、各位置決め孔を位置決めシャフトが積層方向に挿通することから、各中間板が積層方向と直交する方向に位置ずれを生ずることがない。また、位置決めシャフトには各中間板のうち少なくとも一部の中間板に積層方向一方のみから係止可能な係止部が設けられていることから、位置決めシャフトの係止部が前記少なくとも一部の中間板に係止するように各中間板を加硫用金型内に配置することにより、位置決めシャフトが係止する中間板がその係止位置よりも積層方向一方への移動を規制される。さらに、一部の中間板の積層方向への移動が規制されることにより、加硫用金型内の未加硫ゴム部材の流動状態が変わることから、位置決めシャフトが係止しない中間板の積層方向への移動も抑制される。   Thereby, since the positioning shaft passes through each positioning hole in the stacking direction, each intermediate plate does not shift in the direction orthogonal to the stacking direction. In addition, since the positioning shaft is provided with a locking portion that can be locked to only at least one of the intermediate plates from one side in the stacking direction, the locking portion of the positioning shaft is at least part of the intermediate plate. By disposing each intermediate plate in the vulcanizing mold so as to be locked to the intermediate plate, the movement of the intermediate plate locked by the positioning shaft in one of the stacking directions from the locking position is restricted. Further, since the flow state of the unvulcanized rubber member in the vulcanizing mold is changed by restricting the movement of some of the intermediate plates in the laminating direction, the intermediate plate is not laminated by the positioning shaft. Movement in the direction is also suppressed.

また、本発明は、複数の未加硫ゴム部材及び中間板を交互に積層するとともに、その積層方向両端にそれぞれ端面板を配置して加硫用金型内で加硫することにより積層ゴム構造体を成型する積層ゴム構造体の製造方法において、前記各中間板にそれぞれ設けられて積層方向に配列される位置決め孔に積層方向一方及び他方からそれぞれ挿通可能に形成されるとともに、少なくとも一部が積層方向外側から積層方向内側に向かって徐々に外形が小さくなるように形成された一対の位置決めシャフトを備えた加硫用金型内に、各中間板を位置決め孔が積層方向外側から積層方向内側に向かって内形の大きなものから順次配列されるように配置して加硫成型するようにしている。   In addition, the present invention provides a laminated rubber structure by alternately laminating a plurality of unvulcanized rubber members and intermediate plates, and arranging end face plates at both ends in the laminating direction and vulcanizing them in a vulcanizing mold. In the method for manufacturing a laminated rubber structure for molding a body, the positioning holes provided in each of the intermediate plates and arranged in the laminating direction are formed so as to be respectively insertable from one and the other in the laminating direction, and at least a part thereof Each intermediate plate has a positioning hole from the outer side in the stacking direction to the inner side in the stacking direction in a vulcanizing mold having a pair of positioning shafts formed so that the outer shape gradually decreases from the outer side in the stacking direction toward the inner side in the stacking direction. Are arranged so as to be arranged in order from the largest inner shape toward the surface, and vulcanized.

これにより、各位置決め孔に位置決めシャフトが積層方向一方及び他方からそれぞれ挿通されることから、各中間板が積層方向と直交する方向に位置ずれを生ずることがない。また、各位置決め孔は積層方向外側から積層方向内側に向かって内形の大きなものから順次配列されるとともに、各位置決めシャフトは積層方向外側から積層方向内側に向かって徐々に外形が小さくなるように形成されていることから、各位置決め孔がその内形と同等の外形を有する位置決めシャフトの外形部にそれぞれ積層方向内側から係止し、各中間板は位置決め孔が位置決めシャフトと係止する係止位置よりも積層方向外側への移動をそれぞれ規制される。   Thereby, since the positioning shaft is inserted into each positioning hole from one side and the other in the stacking direction, each intermediate plate does not shift in the direction orthogonal to the stacking direction. In addition, each positioning hole is sequentially arranged from the inner side in the stacking direction to the inner side in the stacking direction, and the outer shape of each positioning shaft gradually decreases from the outer side in the stacking direction toward the inner side in the stacking direction. Each positioning hole is locked from the inside in the stacking direction to the outer shape of the positioning shaft having the same outer shape as the inner shape, and each intermediate plate is locked so that the positioning hole is locked to the positioning shaft. Movement outside the stacking direction from the position is restricted.

また、本発明は、複数の未加硫ゴム部材及び中間板を交互に積層するとともに、その積層方向両端にそれぞれ端面板を配置して加硫用金型内で加硫することにより積層ゴム構造体を成型する積層ゴム構造体の製造方法において、前記各中間板にそれぞれ設けられて積層方向に配列される位置決め孔に積層方向に挿通可能に形成されるとともに、少なくとも一部の中間板に積層方向一方のみから係止可能な係止部を有する位置決めシャフトを備えた加硫用金型内に、位置決めシャフトの係止部が前記少なくとも一部の中間板に係止するように各中間板を配置して加硫成型するものであり、前記位置決めシャフトの係止部は、その径方向に出没可能に形成され、径方向外側に突出することにより中間板の積層方向一方の面に係止可能な係止部材と、係止部材を位置決めシャフトの径方向外側に向かって付勢する付勢部材とを有し、前記係止部材は、位置決めシャフトが中間板の位置決め孔に積層方向他方から挿入されると、付勢部材の付勢力に抗して位置決めシャフトの径方向内側に移動するように形成されているIn addition, the present invention provides a laminated rubber structure by alternately laminating a plurality of unvulcanized rubber members and intermediate plates, and arranging end face plates at both ends in the laminating direction and vulcanizing them in a vulcanizing mold. In the method for manufacturing a laminated rubber structure for molding a body, the intermediate rubber plates are formed so as to be inserted in positioning layers provided in the respective intermediate plates and arranged in the stacking direction, and are stacked on at least some of the intermediate plates. Each intermediate plate is placed in a vulcanization mold having a positioning shaft having a locking portion that can be locked only from one direction so that the locking portion of the positioning shaft is locked to at least a portion of the intermediate plate. It is arranged and vulcanized , and the locking part of the positioning shaft is formed so as to be able to protrude and retract in the radial direction, and can be locked to one surface in the stacking direction of the intermediate plate by protruding outward in the radial direction With a locking member A biasing member that biases the locking member toward the radially outer side of the positioning shaft, and the locking member biases when the positioning shaft is inserted into the positioning hole of the intermediate plate from the other side in the stacking direction. It is formed so as to move inward in the radial direction of the positioning shaft against the biasing force of the member .

これにより、各位置決め孔を位置決めシャフトが積層方向に挿通することから、各中間板が積層方向と直交する方向に位置ずれを生ずることがない。また、位置決めシャフトには少なくとも一部の中間板に積層方向一方のみから係止可能な係止部が設けられていることから、位置決めシャフトが係止する中間板はその係止位置よりも積層方向一方への移動を規制される。さらに、一部の中間板の積層方向への移動が規制されることにより、加硫用金型内の未加硫ゴム部材の流動状態が変わることから、位置決めシャフトが係止しない中間板の積層方向への移動も抑制される。   Thereby, since the positioning shaft passes through each positioning hole in the stacking direction, each intermediate plate does not shift in the direction orthogonal to the stacking direction. In addition, since the positioning shaft is provided with a locking portion that can be locked to at least a part of the intermediate plate from only one side in the stacking direction, the intermediate plate locked by the positioning shaft is positioned in the stacking direction more than the locking position. Movement to one side is restricted. Further, since the flow state of the unvulcanized rubber member in the vulcanizing mold is changed by restricting the movement of some of the intermediate plates in the laminating direction, the intermediate plate is not laminated by the positioning shaft. Movement in the direction is also suppressed.

本発明によれば、各中間板は積層方向と直交する方向に位置ずれを生ずることがなく、また、位置決めシャフトと係止する中間板はその係止位置よりも所定の積層方向への移動が規制されるので、加硫用金型の加圧に伴う未加硫ゴム部材の流動によって中間板に積層方向の力が加わる場合でも、各中間板は積層方向への位置ずれや変形を生ずることがなく、各中間板の積層方向の間隔が未加硫ゴム部材の流動によって変わることを防止できる。即ち、各中間板の積層方向の間隔が常に所定の間隔になるように加硫成型することができ、確実に所望の外観を得ることができる点で極めて有利である。   According to the present invention, each intermediate plate is not displaced in the direction orthogonal to the stacking direction, and the intermediate plate that is locked to the positioning shaft is moved in a predetermined stacking direction from the locking position. Since the regulation is restricted, even if a force in the stacking direction is applied to the intermediate plate due to the flow of the unvulcanized rubber member accompanying the pressurization of the vulcanizing mold, each intermediate plate may be displaced or deformed in the stacking direction. Therefore, it is possible to prevent the interval between the intermediate plates in the stacking direction from being changed by the flow of the unvulcanized rubber member. That is, it is extremely advantageous in that the intermediate plate can be vulcanized and molded so that the interval in the stacking direction is always a predetermined interval, and a desired appearance can be obtained with certainty.

図1乃至図4は本発明の第1の実施形態を示すもので、図1は加硫成型中の加硫用金型の平面図、図2は図1におけるA−A線断面図、図3は加硫用金型内に各中間板、各端面板及び各未加硫ゴム部材を配置する状態を示す側面断面図、図4は加硫成型後に積層ゴム構造体を加硫用金型から離型する状態を示す側面断面図である。   1 to 4 show a first embodiment of the present invention. FIG. 1 is a plan view of a mold for vulcanization during vulcanization molding, and FIG. 2 is a sectional view taken along line AA in FIG. 3 is a side sectional view showing a state in which each intermediate plate, each end face plate and each unvulcanized rubber member are arranged in the vulcanizing mold, and FIG. 4 is a diagram showing a vulcanizing mold for the laminated rubber structure after vulcanization molding. FIG.

本発明の積層ゴム構造体の製造方法は、図3に示すように、加硫用金型10内に複数の未加硫ゴム部材20と2枚の第1中間板30及び1枚の第2中間板31とを交互に積層するとともに、その積層方向両端に下側端面板32及び上側端面板33を配置した後、加硫用金型10を加圧及び加熱することにより積層ゴム構造体を成型するものである。   As shown in FIG. 3, the laminated rubber structure manufacturing method of the present invention includes a plurality of unvulcanized rubber members 20, two first intermediate plates 30, and one second plate in a vulcanizing mold 10. The intermediate rubber plates 31 are alternately laminated, and the lower end face plate 32 and the upper end face plate 33 are arranged at both ends in the lamination direction, and then the vulcanizing mold 10 is pressurized and heated to form a laminated rubber structure. It is to be molded.

加硫用金型10は、下型11と、上型12と、中型13と、加硫用金型10内に配置される位置決めシャフトとしての4本の上側シャフト14及び4本の下側シャフト15とから構成されている。   The vulcanizing mold 10 includes a lower mold 11, an upper mold 12, an intermediate mold 13, four upper shafts 14 and four lower shafts as positioning shafts arranged in the vulcanizing mold 10. 15.

下型11は矩形の板状に形成され、上面の外周部に全周に亘って上方に延びる突状部11aが設けられている。また、突状部11aの内周面には上方に向かって徐々に外側に傾斜する傾斜面11bが形成されている。   The lower mold 11 is formed in a rectangular plate shape, and is provided with a protruding portion 11a extending upward over the entire circumference on the outer peripheral portion of the upper surface. An inclined surface 11b is formed on the inner peripheral surface of the protruding portion 11a. The inclined surface 11b is gradually inclined outward.

上型12は矩形の板状に形成され、下面の外周部に全周に亘って下方に延びる突状部12aが設けられている。また、突状部12aの内周面には下方に向かって徐々に外側に傾斜する傾斜面12bが形成されている。さらに、上型12の下面には後述する各第1中間板30の各貫通孔30aに対応する位置にそれぞれ位置決め穴12cが設けられ、各位置決め穴12cにはそれぞれ上側シャフト14の上端部が挿入されるようになっている。   The upper mold 12 is formed in a rectangular plate shape, and a protruding portion 12a extending downward is provided on the outer peripheral portion of the lower surface over the entire periphery. In addition, an inclined surface 12b is formed on the inner peripheral surface of the projecting portion 12a. Further, a positioning hole 12c is provided on the lower surface of the upper mold 12 at a position corresponding to each through hole 30a of each first intermediate plate 30 described later, and the upper end portion of the upper shaft 14 is inserted into each positioning hole 12c. It has come to be.

中型13は幅方向に分割可能な一対の中型部材13aからなり、各中型部材13aは水平方向の断面がコ字形状に形成されている。また、各中型部材13aの上端部の外周面には上方に向かって徐々に内側に傾斜する傾斜面13bが形成されるとともに、各中型部材13aの下端部の外周面には下方に向かって徐々に内側に傾斜する傾斜面13cが形成されている。   The middle mold 13 includes a pair of middle mold members 13a that can be divided in the width direction, and each middle mold member 13a is formed in a U-shaped horizontal cross section. In addition, an inclined surface 13b that is gradually inclined inward toward the upper side is formed on the outer peripheral surface of the upper end portion of each intermediate member 13a, and is gradually decreased downward on the outer peripheral surface of the lower end portion of each intermediate member 13a. An inclined surface 13c that is inclined inward is formed.

各上側シャフト14は円柱状に形成され、下端部側には下方に向かって徐々に外径が小さくなるテーパー部14aが設けられている。また、各上側シャフト14の上端部の外周面には全周に亘って面取り部14bが形成されている。   Each upper shaft 14 is formed in a columnar shape, and a tapered portion 14a whose outer diameter gradually decreases downward is provided on the lower end side. Further, a chamfered portion 14b is formed on the outer peripheral surface of the upper end portion of each upper shaft 14 over the entire circumference.

各下側シャフト15は円柱状に形成され、上端部側には上方に向かって徐々に外径が小さくなるテーパー部15aが設けられている。また、各下側シャフト15の下端部側の外周面にはネジ部15bが設けられている。さらに、各下側シャフト15のテーパー部15aの形状は各上側シャフト14のテーパー部14aの形状と等しい形状に形成されている。また、各シャフト14,15は互いの先端部が加硫用金型10内で上下方向に当接するようになっている。   Each lower shaft 15 is formed in a columnar shape, and a tapered portion 15a whose outer diameter gradually decreases upward is provided on the upper end side. Further, a screw portion 15 b is provided on the outer peripheral surface on the lower end side of each lower shaft 15. Further, the shape of the tapered portion 15 a of each lower shaft 15 is formed to be equal to the shape of the tapered portion 14 a of each upper shaft 14. Further, the shafts 14 and 15 are configured such that their tip portions are in contact with each other in the vertical direction within the vulcanizing mold 10.

未加硫ゴム部材20は矩形のシート状に成形され、四隅には後述する第1中間板30の各貫通孔30aに対応する位置に上下方向に貫通する貫通孔20aが設けられている。   The unvulcanized rubber member 20 is formed in a rectangular sheet shape, and through holes 20a penetrating in the vertical direction are provided at positions corresponding to the through holes 30a of the first intermediate plate 30 described later at the four corners.

各第1中間板30は鉄鋼材料からなり、矩形の板状に形成されるとともに、四隅の近傍には上下方向に貫通する位置決め孔としての貫通孔30aが設けられている。また、各貫通孔30aは各シャフト14,15のテーパー部14a,15aの上下方向略中央部の外径と等しい内径に形成されている。さらに、各第1中間板30の上面及び下面には未加硫ゴム部材20を加硫接着するための接着剤が塗布されている。   Each first intermediate plate 30 is made of a steel material, is formed in a rectangular plate shape, and is provided with through holes 30a as positioning holes penetrating in the vertical direction in the vicinity of the four corners. Each through hole 30a has an inner diameter equal to the outer diameter of the substantially central portion in the vertical direction of the tapered portions 14a, 15a of the shafts 14, 15. Further, an adhesive for vulcanizing and bonding the unvulcanized rubber member 20 is applied to the upper and lower surfaces of each first intermediate plate 30.

第2中間板31は鉄鋼材料からなり、矩形の板状に形成されるとともに、四隅の近傍には上下方向に貫通する位置決め孔としての貫通孔31aが設けられている。また、各貫通孔31aは第1中間板30の各貫通孔30aに対応する位置にそれぞれ設けられ、各貫通孔31aは各シャフト14,15のテーパー部14a,15aの先端部の外径と等しい内径に形成されている。さらに、各第2中間板31の上面及び下面には未加硫ゴム部材20を加硫接着するための接着剤が塗布されている。   The second intermediate plate 31 is made of a steel material, is formed in a rectangular plate shape, and has through holes 31a as positioning holes penetrating in the vertical direction in the vicinity of the four corners. Further, each through hole 31a is provided at a position corresponding to each through hole 30a of the first intermediate plate 30, and each through hole 31a is equal to the outer diameter of the tip end portion of the tapered portions 14a, 15a of the shafts 14, 15. It is formed on the inner diameter. Further, an adhesive for vulcanizing and bonding the unvulcanized rubber member 20 is applied to the upper surface and the lower surface of each second intermediate plate 31.

下側端面板32は鉄鋼材料からなり、各中間板30,31よりも厚い矩形の板状に形成されるとともに、四隅の近傍には上下方向に貫通するネジ孔32aが設けられている。また、各ネジ孔32aは第1中間板30の各貫通孔30aに対応する位置にそれぞれ設けられ、下側端面板32の上面側には未加硫ゴム部材20を加硫接着するための接着剤が塗布されている。   The lower end face plate 32 is made of a steel material, is formed in a rectangular plate shape thicker than the intermediate plates 30 and 31, and is provided with screw holes 32a penetrating in the vertical direction in the vicinity of the four corners. Each screw hole 32 a is provided at a position corresponding to each through hole 30 a of the first intermediate plate 30, and an adhesive for vulcanizing and bonding the unvulcanized rubber member 20 to the upper surface side of the lower end face plate 32. The agent is applied.

上側端面板33は鉄鋼材料からなり、各中間板30,31よりも厚い矩形の板状に形成されるとともに、四隅の近傍には上下方向に貫通する貫通孔33aが設けられている。また、各貫通孔33aは第1中間板30の各貫通孔30aに対応する位置にそれぞれ設けられ、上側端面板33の下面側には未加硫ゴム部材20を加硫接着するための接着剤が塗布されている。   The upper end face plate 33 is made of a steel material, is formed in a rectangular plate shape thicker than the intermediate plates 30 and 31, and is provided with through holes 33a penetrating in the vertical direction in the vicinity of the four corners. Each through hole 33 a is provided at a position corresponding to each through hole 30 a of the first intermediate plate 30, and an adhesive for vulcanizing and bonding the unvulcanized rubber member 20 to the lower surface side of the upper end face plate 33. Is applied.

ここで、本実施形態の積層ゴム構造体の製造方法について説明する。先ず、図3に示すように、下側端面板32の各ネジ孔32aにそれぞれ下側シャフト15を螺合し、下側端面板32を中型13が取付けられた下型11に載置する。次に、各第1中間板30の間に第2中間板31を配置するともに、各第1中間板30の上面側及び下面側にそれぞれ未加硫ゴム部材20を配置し、各中間板30,31及び各未加硫ゴム部材20を加硫用金型10内に配置する。この時、各貫通孔30a,31a,20aに各下側シャフト15が挿通するようにする。続いて、その上面に上側端面板33を載置するとともに上側端面板33の各貫通孔33aにそれぞれ上方から上側シャフト14を挿入し、各上側シャフト14が各位置決め穴12cに挿入されるように上型12を載置する。   Here, the manufacturing method of the laminated rubber structure of this embodiment is demonstrated. First, as shown in FIG. 3, the lower shaft 15 is screwed into each screw hole 32 a of the lower end face plate 32, and the lower end face plate 32 is placed on the lower die 11 to which the middle die 13 is attached. Next, the second intermediate plate 31 is disposed between the first intermediate plates 30, and the unvulcanized rubber member 20 is disposed on the upper surface side and the lower surface side of each first intermediate plate 30. , 31 and each unvulcanized rubber member 20 are placed in a vulcanizing mold 10. At this time, each lower shaft 15 is inserted through each through hole 30a, 31a, 20a. Subsequently, the upper end face plate 33 is placed on the upper surface, and the upper shafts 14 are inserted into the respective through holes 33a of the upper end face plate 33 from above so that the upper shafts 14 are inserted into the positioning holes 12c. The upper mold 12 is placed.

この状態で加硫用金型10を図示しない加硫プレスによって上方から加圧しながら加熱すると、図2に示すように、未加硫ゴム部材20が水平方向内側から外側に向かって流動するとともに水平方向外側において上方または下方に流動する。   In this state, when the vulcanizing mold 10 is heated while being pressurized from above by a vulcanizing press (not shown), the unvulcanized rubber member 20 flows from the inner side to the outer side in the horizontal direction as shown in FIG. Flows upward or downward on the outside in the direction.

ここで、各中間板30,31の各貫通孔30a,31aには上側シャフト14及び下側シャフト15がそれぞれ挿通していることから、各中間板30,31が積層方向と直交する方向に位置ずれを生ずることがない。   Here, since the upper shaft 14 and the lower shaft 15 are inserted into the through holes 30a and 31a of the intermediate plates 30 and 31, respectively, the intermediate plates 30 and 31 are positioned in a direction orthogonal to the stacking direction. There will be no deviation.

また、各第1中間板30の各貫通孔30aはシャフト14,15のテーパー部14a,15aの上下方向略中央部の外径と等しい内径に形成されるとともに、第2中間板31の各貫通孔31aはシャフト14,15のテーパー部14a,15aの先端部の外径と等しい内径に形成されていることから、各中間板30,31は各貫通孔30a,31aが各テーパー部14a,15aと積層方向に係止する係止位置よりも積層方向外側への移動を規制される。   In addition, each through hole 30a of each first intermediate plate 30 is formed to have an inner diameter equal to the outer diameter of the substantially central portion in the vertical direction of the tapered portions 14a and 15a of the shafts 14 and 15, and each through hole of the second intermediate plate 31 is formed. Since the hole 31a is formed to have an inner diameter equal to the outer diameter of the tip of the tapered portions 14a, 15a of the shafts 14, 15, the through holes 30a, 31a of the intermediate plates 30, 31 are formed of the tapered portions 14a, 15a. And the movement to the outside in the stacking direction is restricted from the locking position for locking in the stacking direction.

続いて、図4に示すように、所定の時間だけ加圧及び加熱した後に下型11、上型12及び中型13を互いに離れるように移動し、また、各上側シャフト14を上方に抜き取るとともに下側シャフト15を下方に抜き取ることにより、積層ゴム構造体を離型する。この際、各下側シャフト15は下側端面板32に着脱自在に螺合しているので、下型11を積層ゴム構造体から離す時に各下側シャフト15が落下することがなく、各下側シャフト15を抜き取ることが容易になる。また、このように製造された積層ゴム構造体には、内部に積層方向外側から積層方向内側に向かって徐々に内径が小さくなる複数の穴が形成される。   Subsequently, as shown in FIG. 4, after pressurizing and heating for a predetermined time, the lower mold 11, the upper mold 12 and the middle mold 13 are moved away from each other, and each upper shaft 14 is pulled out and lowered. The laminated rubber structure is released by pulling the side shaft 15 downward. At this time, since each lower shaft 15 is detachably screwed to the lower end face plate 32, each lower shaft 15 does not fall when the lower mold 11 is separated from the laminated rubber structure, and each lower shaft 15 does not fall. It becomes easy to pull out the side shaft 15. In the laminated rubber structure manufactured in this way, a plurality of holes whose inner diameters gradually decrease from the outer side in the laminating direction toward the inner side in the laminating direction are formed inside.

このように、本実施形態によれば、各中間板30,31の各貫通孔30a,31aには上側シャフト14及び下側シャフト15がそれぞれ挿通し、各中間板30,31が積層方向と直交する方向に位置ずれを生ずることがないので、加硫ゴムからの各中間板30,31の露出を防止することができ、確実に所望の外観を得ることができる。   Thus, according to the present embodiment, the upper shaft 14 and the lower shaft 15 are inserted into the through holes 30a and 31a of the intermediate plates 30 and 31, respectively, and the intermediate plates 30 and 31 are orthogonal to the stacking direction. Therefore, the intermediate plates 30 and 31 can be prevented from being exposed from the vulcanized rubber, and a desired appearance can be obtained with certainty.

また、各中間板30,31は各貫通孔30a,31aが各テーパー部14a,15aと積層方向に係止する係止位置よりも積層方向外側への移動を規制されるので、加硫用金型10の加圧により流動する未加硫ゴム部材20によって各中間板30,31に積層方向の力が加わる場合でも、各中間板30,31は積層方向への位置ずれや変形を生ずることがなく、各中間板30,31の積層方向の間隔が未加硫ゴム部材20の流動によって変わることを防止できる。即ち、各中間板30,31の積層方向の間隔が常に所定の間隔になるように加硫成型することができ、確実に所望の外観を得ることができる点で極めて有利である。   Further, since the intermediate plates 30 and 31 are restricted from moving outward in the stacking direction from the locking positions where the through holes 30a and 31a are locked in the stacking direction with the tapered portions 14a and 15a, the vulcanizing gold Even when a force in the stacking direction is applied to each of the intermediate plates 30 and 31 by the unvulcanized rubber member 20 that flows when the mold 10 is pressed, the intermediate plates 30 and 31 may be displaced or deformed in the stacking direction. In addition, the interval in the stacking direction of the intermediate plates 30 and 31 can be prevented from changing due to the flow of the unvulcanized rubber member 20. That is, it is extremely advantageous in that the intermediate plates 30 and 31 can be vulcanized and molded so that the interval in the stacking direction is always a predetermined interval, and a desired appearance can be obtained with certainty.

さらに、各下側シャフト15は下側端面板32に着脱自在に螺合しているので、積層ゴム構造体を下型11から離型する時に各下側シャフト15が落下することを防止でき、積層ゴム構造体の離型作業を容易且つ確実に行うことができる。   Furthermore, since each lower shaft 15 is detachably screwed to the lower end face plate 32, each lower shaft 15 can be prevented from dropping when the laminated rubber structure is released from the lower mold 11, The release operation of the laminated rubber structure can be performed easily and reliably.

また、各貫通孔30a,31aを各中間板30,31の四隅の近傍に設けたので、未加硫ゴム部材20の流動によって積層方向への位置ずれまたは変形が生じやすい各中間板30,31の四隅を移動規制することができ、各中間板30,31の積層方向の間隔を所定の間隔に保持する上で極めて有利である。   Further, since the through holes 30a and 31a are provided in the vicinity of the four corners of the intermediate plates 30 and 31, the intermediate plates 30 and 31 that are likely to be displaced or deformed in the stacking direction due to the flow of the unvulcanized rubber member 20. The movement of the four corners of the intermediate plates 30 and 31 can be restricted, which is extremely advantageous in maintaining the intervals in the stacking direction of the intermediate plates 30 and 31 at predetermined intervals.

尚、本実施形態では、各貫通孔30a,31aを円形状に形成するとともに、各シャフト14,15を円柱状に形成したものを示したが、各貫通孔30a,31aを多角形状に形成するとともに、各シャフト14,15を各貫通孔30a,31aを挿通可能な多角柱状に形成することも可能である。   In the present embodiment, the through holes 30a and 31a are formed in a circular shape and the shafts 14 and 15 are formed in a cylindrical shape. However, the through holes 30a and 31a are formed in a polygonal shape. In addition, the shafts 14 and 15 may be formed in a polygonal column shape that can be inserted through the through holes 30a and 31a.

図5は本発明の第2の実施形態を示す加硫成型中の加硫用金型の側面断面図である。尚、第1の実施形態と同等の構成部分には同一の符号を付して示す。   FIG. 5 is a side sectional view of a vulcanization mold during vulcanization molding showing a second embodiment of the present invention. In addition, the same code | symbol is attached | subjected and shown to the component equivalent to 1st Embodiment.

本発明の積層ゴム構造体の製造方法は、図5に示すように、加硫用金型40内に複数の未加硫ゴム部材20と第1中間板50、第2中間板51及び第3中間板52とを交互に積層するとともに、その積層方向両端に下側端面板53及び第1の実施形態と同様の上側端面板33を配置した後、加硫用金型40を加圧及び加熱することにより積層ゴム構造体を成型するものである。   As shown in FIG. 5, the method for producing a laminated rubber structure of the present invention includes a plurality of unvulcanized rubber members 20, a first intermediate plate 50, a second intermediate plate 51, and a third in a vulcanizing mold 40. The intermediate plates 52 are alternately stacked, and the lower end plate 53 and the upper end plate 33 similar to those of the first embodiment are disposed at both ends in the stacking direction, and then the vulcanizing mold 40 is pressurized and heated. By doing so, a laminated rubber structure is molded.

加硫用金型40は、下型41と、加硫用金型10内に配置される位置決めシャフトとしての4本のシャフト42と、第1の実施形態と同様の上型12及び中型13とから構成されている。   The vulcanizing mold 40 includes a lower mold 41, four shafts 42 as positioning shafts arranged in the vulcanizing mold 10, an upper mold 12 and a middle mold 13 similar to those in the first embodiment. It is composed of

下型41は矩形の板状に形成され、上面の外周に全周に亘って上方に延びる突出部41aが設けられている。また、突出部41aの内周面には上方に向かって徐々に外側に傾斜する傾斜面41bが形成されている。さらに、下型41の上面には後述する第1中間板50の各貫通孔50aに対応する位置にそれぞれ位置決め穴41cが設けられ、各位置決め穴41cにはそれぞれシャフト42の下端部が挿入されるようになっている。   The lower die 41 is formed in a rectangular plate shape, and is provided with a protruding portion 41a extending upward over the entire circumference on the outer periphery of the upper surface. Further, an inclined surface 41b is formed on the inner peripheral surface of the protruding portion 41a. The inclined surface 41b is gradually inclined outward. Further, positioning holes 41c are provided on the upper surface of the lower die 41 at positions corresponding to through holes 50a of the first intermediate plate 50 described later, and the lower end portions of the shafts 42 are inserted into the positioning holes 41c, respectively. It is like that.

各シャフト42は円柱状に形成され、上下方向中央部には下方に向かって徐々に外径が小さくなるテーパー部42aが設けられている。また、各シャフト42の上端部の外周面には全周に亘って面取り部42bが形成されるとともに、下端部の外周面には全周に亘って面取り部42cが形成されている。   Each shaft 42 is formed in a columnar shape, and a tapered portion 42a having an outer diameter that gradually decreases downward is provided at a central portion in the vertical direction. Further, a chamfered portion 42b is formed on the outer peripheral surface of the upper end portion of each shaft 42 over the entire periphery, and a chamfered portion 42c is formed on the outer peripheral surface of the lower end portion over the entire periphery.

各中間板50,51,52は鉄鋼材料からなり、矩形の板状に形成されるとともに、四隅の近傍には上下方向に貫通する位置決め孔としての貫通孔50a,51a,52aがそれぞれ設けられている。第1中間板50の各貫通孔50aはシャフト42のテーパー部42aにおける下端側の外径と等しい内径に形成され、第2中間板51の各貫通孔51aはシャフト42のテーパー部42aにおける上下方向略中央部の外径と等しい内径に形成されている。また、第3中間板52の各貫通孔52aはシャフト42のテーパー部42aにおける上端側の外径と等しい内径に形成されている。さらに、各中間板50,51,52の上面及び下面には未加硫ゴム部材20と加硫接着するための接着剤がそれぞれ塗布されている。   Each of the intermediate plates 50, 51, 52 is made of a steel material and is formed in a rectangular plate shape, and through holes 50a, 51a, 52a as positioning holes penetrating in the vertical direction are provided in the vicinity of the four corners. Yes. Each through hole 50a of the first intermediate plate 50 is formed to have an inner diameter equal to the outer diameter on the lower end side of the tapered portion 42a of the shaft 42, and each through hole 51a of the second intermediate plate 51 is in the vertical direction of the tapered portion 42a of the shaft 42. The inner diameter is substantially equal to the outer diameter of the central portion. Further, each through hole 52 a of the third intermediate plate 52 is formed with an inner diameter equal to the outer diameter on the upper end side of the tapered portion 42 a of the shaft 42. Further, an adhesive for vulcanizing and bonding to the unvulcanized rubber member 20 is applied to the upper surface and the lower surface of each intermediate plate 50, 51, 52.

下側端面板53は鉄鋼材料からなり、各中間板50,51,52よりも厚い矩形の板状に形成されるとともに、四隅の近傍には上下方向に貫通する貫通孔53aが設けられている。また、各貫通孔53aは第1中間板50の各貫通孔50aに対応する位置にそれぞれ設けられ、下側端面板53の上面側には未加硫ゴム部材20を加硫接着するための接着剤が塗布されている。   The lower end face plate 53 is made of a steel material, is formed in a rectangular plate shape thicker than the intermediate plates 50, 51, 52, and has through holes 53a penetrating vertically in the vicinity of the four corners. . Each through hole 53 a is provided at a position corresponding to each through hole 50 a of the first intermediate plate 50, and an adhesive for vulcanizing and bonding the unvulcanized rubber member 20 to the upper surface side of the lower end face plate 53. The agent is applied.

ここで、本実施形態の積層ゴム構造体の製造方法は、第1の実施形態と同様に各未加硫ゴム部材20、各中間板50,51,52及び各端面板33,53を加硫用金型40内に配置するとともに、上側端面板33の各貫通孔33aに上方からシャフト42をそれぞれ挿入した後、上型12を載置する。   Here, the manufacturing method of the laminated rubber structure of the present embodiment vulcanizes each unvulcanized rubber member 20, each intermediate plate 50, 51, 52 and each end face plate 33, 53 as in the first embodiment. While arrange | positioning in the metal mold | die 40, after inserting the shaft 42 from upper direction in each through-hole 33a of the upper side end surface plate 33, the upper mold | type 12 is mounted.

この状態で加硫用金型40を図示しない加硫プレスによって上方から加圧しながら加熱すると、図5に示すように、未加硫ゴム部材20が水平方向内側から外側に向かって流動するとともに水平方向外側において上方に流動する。   In this state, when the vulcanizing mold 40 is heated while being pressurized from above by a vulcanizing press (not shown), the unvulcanized rubber member 20 flows from the horizontal inner side to the outer side as shown in FIG. Flows upward on the outside in the direction.

ここで、各中間板50,51,52の各貫通孔50a,51a,52aにはシャフト42がそれぞれ挿通していることから、各中間板50,51,52が積層方向と直交する方向に位置ずれを生ずることがない。   Here, since the shafts 42 are inserted into the through holes 50a, 51a, 52a of the intermediate plates 50, 51, 52, the intermediate plates 50, 51, 52 are positioned in a direction orthogonal to the stacking direction. There will be no deviation.

また、第1中間板50の各貫通孔50aはシャフト42のテーパー部42aにおける下端側の外径と等しい内径に形成されるとともに、第2中間板51の各貫通孔51aはシャフト42のテーパー部42aにおける上下方向略中央部の外径と等しい内径に形成され、さらに、第3中間板52の各貫通孔52aはシャフト42のテーパー部42aにおける上端側の外径と等しい内径に形成されていることから、各中間板50,51,52は各貫通孔50a,51a,52aが各テーパー部42aと積層方向に係止する位置よりも上方への移動を規制される。   Each through hole 50a of the first intermediate plate 50 is formed to have an inner diameter equal to the outer diameter on the lower end side of the tapered portion 42a of the shaft 42, and each through hole 51a of the second intermediate plate 51 is formed of the tapered portion of the shaft 42. 42a is formed with an inner diameter equal to the outer diameter of the substantially central portion in the vertical direction, and each through hole 52a of the third intermediate plate 52 is formed with an inner diameter equal to the outer diameter on the upper end side of the tapered portion 42a of the shaft 42. For this reason, the intermediate plates 50, 51, 52 are restricted from moving upward from the positions where the through holes 50a, 51a, 52a are engaged with the tapered portions 42a in the stacking direction.

このように、本実施形態によれば、各中間板50,51,52は各貫通孔50a,51a,52aが各テーパー部42aと積層方向に係止する係止位置よりも上方への移動を規制されるので、加硫用金型40の加圧により流動する未加硫ゴム部材20によって各中間板50,51,52に上向きの力が加わる場合でも、各中間板50,51,52が積層方向への位置ずれや変形を生ずることがなく、各中間板50,51,52の積層方向の間隔が未加硫ゴム部材20の流動によって変わることを防止できる。即ち、各中間板50,51,52の積層方向の間隔が常に所定の間隔になるように加硫成型することができ、確実に所望の外観を得ることができる点で極めて有利である。   Thus, according to the present embodiment, each of the intermediate plates 50, 51, 52 moves upward from the locking position where each of the through holes 50a, 51a, 52a locks with each tapered portion 42a in the stacking direction. Therefore, even when an upward force is applied to the intermediate plates 50, 51, 52 by the unvulcanized rubber member 20 that flows by pressurization of the vulcanizing mold 40, the intermediate plates 50, 51, 52 are It is possible to prevent the intermediate plate 50, 51, 52 from changing in the stacking direction due to the flow of the unvulcanized rubber member 20 without causing any positional shift or deformation in the stacking direction. That is, it is extremely advantageous in that the intermediate plates 50, 51, 52 can be vulcanized and molded so that the interval in the stacking direction is always a predetermined interval, and a desired appearance can be obtained with certainty.

図6乃至図7は本発明の第3の実施形態を示すもので、図6は加硫成型中の加硫用金型の側面断面図、図7はシャフトの要部断面図である。尚、第2の実施形態と同等の構成部分には同一の符号を付して示す。   FIGS. 6 to 7 show a third embodiment of the present invention. FIG. 6 is a side sectional view of a vulcanization mold during vulcanization molding, and FIG. In addition, the same code | symbol is attached | subjected and shown to the component equivalent to 2nd Embodiment.

本発明の積層ゴム構造体の製造方法は、図6に示すように、加硫用金型60内に複数の未加硫ゴム部材20と複数の中間板70とを交互に積層するとともに、その積層方向両端に第2の実施形態と同様の各端面板53,33を配置した後、加硫用金型60を加圧及び加熱することにより積層ゴム構造体を成型するものである。   As shown in FIG. 6, the method for producing a laminated rubber structure of the present invention alternately laminates a plurality of unvulcanized rubber members 20 and a plurality of intermediate plates 70 in a vulcanizing mold 60, After the end face plates 53 and 33 similar to those of the second embodiment are disposed at both ends in the laminating direction, the laminated rubber structure is molded by pressurizing and heating the vulcanizing mold 60.

加硫用金型60は、第2の実施形態と同様の下型41、上型12及び中型13と、加硫用金型60内に配置される位置決めシャフトとしての4本のシャフト61とから構成されている。   The vulcanizing mold 60 includes a lower mold 41, an upper mold 12 and an intermediate mold 13 similar to those in the second embodiment, and four shafts 61 serving as positioning shafts disposed in the vulcanizing mold 60. It is configured.

各シャフト61は円柱状に形成され、互いに上下方向に間隔をおいて2箇所にそれぞれ一対の係止部材61aが設けられている。各係止部材61aはシャフト61に設けられた凹状部61b内に配置されるとともに、上端部が取付ピン61cによってシャフト61に取付けられ、シャフト61の径方向に回動するようになっている。また、各係止部材61aの下端部側にはそれぞれ付勢部材としてのスプリング61dが取付けられ、スプリング61dによって係止部材61aがシャフト61の径方向外側に付勢されている。即ち、シャフト61を後述する中間板70の貫通孔70aに下方から挿入すると、係止部材61aが貫通孔70aに係合することによりスプリング61dの付勢力に抗してシャフト61の径方向内側に回動し、凹状部61b内に没して貫通孔70aを通過する。また、貫通孔70aを通過した後は係止部材61aがスプリング61dの付勢力によりシャフト61の径方向外側に回動し、係止部材61aが凹状部61b外に突出して中間板70の上面に係止するようになっている。   Each shaft 61 is formed in a columnar shape, and is provided with a pair of locking members 61a at two locations spaced apart from each other in the vertical direction. Each locking member 61 a is disposed in a concave portion 61 b provided on the shaft 61, and an upper end portion is attached to the shaft 61 by an attachment pin 61 c and is rotated in the radial direction of the shaft 61. Further, a spring 61d as an urging member is attached to the lower end portion side of each locking member 61a, and the locking member 61a is urged radially outward of the shaft 61 by the spring 61d. That is, when the shaft 61 is inserted into a through-hole 70a of the intermediate plate 70 described later from below, the locking member 61a engages with the through-hole 70a, thereby resisting the biasing force of the spring 61d and moving the shaft 61 radially inward. Rotate, immerse in the recessed portion 61b and pass through the through hole 70a. Further, after passing through the through hole 70a, the locking member 61a is rotated radially outward of the shaft 61 by the urging force of the spring 61d, and the locking member 61a protrudes out of the concave portion 61b to be on the upper surface of the intermediate plate 70. It is designed to be locked.

各中間板70は鉄鋼材料からなり、矩形の板状に形成されている。また、中間板70の四隅の近傍には上下方向に貫通する位置決め孔としての貫通孔70aが設けられ、貫通孔70aはシャフト61の外径よりもわずかに大きな内径に形成されている。   Each intermediate plate 70 is made of a steel material and is formed in a rectangular plate shape. Further, through holes 70 a as positioning holes penetrating in the vertical direction are provided in the vicinity of the four corners of the intermediate plate 70, and the through holes 70 a are formed with an inner diameter slightly larger than the outer diameter of the shaft 61.

ここで、本実施形態の積層ゴム構造体の製造方法は、第2の実施形態と同様に各未加硫ゴム部材20、各中間板70及び各端面板33,53の各貫通孔70a,33a,53aに下方からシャフト61を挿入して加硫用金型60内に配置した後、上型12を載置する。   Here, the manufacturing method of the laminated rubber structure of the present embodiment is similar to the second embodiment in that each of the unvulcanized rubber member 20, the intermediate plate 70, and the through holes 70 a and 33 a of the end face plates 33 and 53. 53a, the shaft 61 is inserted from below and placed in the vulcanizing mold 60, and then the upper mold 12 is placed.

この状態で加硫用金型60を図示しない加硫プレスによって上方から加圧しながら加熱すると、図6に示すように、未加硫ゴム部材20が水平方向内側から外側に向かって流動するとともに水平方向外側において上方に流動する。   In this state, when the vulcanizing mold 60 is heated while being pressurized from above by a vulcanizing press (not shown), the unvulcanized rubber member 20 flows from the horizontal inner side to the outer side as shown in FIG. Flows upward on the outside in the direction.

ここで、各中間板70の各貫通孔70aにはシャフト61がそれぞれ挿通していることから、各中間板70が積層方向と直交する方向に位置ずれを生ずることがない。   Here, since the shaft 61 is inserted in each through hole 70a of each intermediate plate 70, each intermediate plate 70 is not displaced in the direction orthogonal to the stacking direction.

また、一部の中間板70の各貫通孔70a付近の上面には各シャフト61の各係止部材61aが係止することから、係止部材61aと係止する中間板70はその係止位置よりも上方への移動を規制される。また、加硫成型後にシャフト61を上方に向かって抜き取る際には、各係止部材61aが各貫通孔70a,33aに係合してシャフト61の径方向内側に回動するので、各シャフト61を加硫成型後の積層ゴム構造体から容易に取り外すことができる。   Further, since each locking member 61a of each shaft 61 is locked to the upper surface of each intermediate plate 70 in the vicinity of each through hole 70a, the intermediate plate 70 locked to the locking member 61a is in its locked position. The upward movement is restricted. Further, when the shaft 61 is extracted upward after vulcanization molding, each locking member 61a engages with each of the through holes 70a and 33a and rotates inward in the radial direction of the shaft 61. Can be easily removed from the laminated rubber structure after vulcanization molding.

このように、本実施形態によれば、一部の中間板70が各シャフト61の各係止部材61aによって上方への移動を規制されるので、加硫用金型60の加圧により流動する未加硫ゴム部材20によって各中間板70に上向きの力が加わる場合でも、各係止部材61aが係止する中間板70が積層方向への位置ずれや変形を生ずることがない。また、一部の中間板70の積層方向への位置ずれや変形が規制されることにより、加硫用金型60内の未加硫ゴム部材20の流動状態が変化し、他の中間板70の積層方向への位置ずれや変形を抑制することができる。即ち、各中間板70の積層方向の間隔が常に所定の間隔になるように加硫成型することができ、確実に所望の外観を得ることができる点で極めて有利である。   As described above, according to the present embodiment, since some of the intermediate plates 70 are restricted from moving upward by the locking members 61 a of the shafts 61, the intermediate plates 70 flow by pressurization of the vulcanizing mold 60. Even when an upward force is applied to each intermediate plate 70 by the unvulcanized rubber member 20, the intermediate plate 70 that is locked by each locking member 61a is not displaced or deformed in the stacking direction. Further, by restricting the displacement and deformation of some intermediate plates 70 in the stacking direction, the flow state of the unvulcanized rubber member 20 in the vulcanizing mold 60 changes, and the other intermediate plates 70 are changed. It is possible to suppress displacement and deformation in the stacking direction. That is, it is extremely advantageous in that the intermediate plate 70 can be vulcanized and molded so that the interval in the stacking direction is always a predetermined interval, and a desired appearance can be obtained with certainty.

尚、本実施形態では、シャフト61にスプリング61dによって径方向外側に向かって付勢された係止部材61aを設けたものを示したが、上端部がシャフト61の外周面に固定さるとともに下端部がシャフト61の径方向外側に突出し、シャフト61を貫通孔70aに下方から挿通すると下端部がシャフト61の径方向内側に弾性変形するとともに、中間板70の上面に係止する係止部材を設けることも可能である。   In this embodiment, the shaft 61 is provided with the locking member 61a urged radially outward by the spring 61d. However, the upper end is fixed to the outer peripheral surface of the shaft 61 and the lower end. Protrudes outward in the radial direction of the shaft 61, and when the shaft 61 is inserted into the through hole 70 a from below, a lower end portion is elastically deformed radially inward of the shaft 61 and a locking member for locking to the upper surface of the intermediate plate 70 is provided. It is also possible.

本発明における第1の実施形態を示す加硫成型中の加硫用金型の平面図The top view of the metal mold | die for vulcanization | cure in the vulcanization molding which shows 1st Embodiment in this invention 図1におけるA−A線断面図AA line sectional view in FIG. 加硫用金型内に各中間板、各端面板及び各未加硫ゴム部材を配置する状態を示す側面断面図Side surface sectional view showing a state in which each intermediate plate, each end face plate and each unvulcanized rubber member are disposed in the vulcanization mold 加硫成型後に積層ゴム構造体を加硫用金型から離型する状態を示す側面断面図Side sectional view showing a state in which the laminated rubber structure is released from the vulcanization mold after vulcanization molding 本発明の第2の実施形態を示す加硫成型中の加硫用金型の側面断面図Side sectional view of a vulcanization mold during vulcanization molding showing a second embodiment of the present invention 本発明の第3の実施形態示す加硫成型中の加硫用金型の側面断面図Side surface sectional view of a mold for vulcanization during vulcanization molding according to a third embodiment of the present invention シャフトの要部断面図Cross section of the main part of the shaft

10…加硫用金型、11…下型、12…上型、12c…位置決め穴、13…中型、14…上側シャフト、14a…テーパー部、15…下側シャフト、15a…テーパー部、15b…ネジ部、20…未加硫ゴム部材、30…第1中間板、30a…貫通孔、31…第2中間板、31a…貫通孔、32…下側端面板、32a…ネジ孔、33…上側端面板、33a…貫通孔、40…加硫用金型、41…下型、41c…位置決め穴、42…シャフト、42a…テーパー部、50…第1中間板、50a…貫通孔、51…第2中間板、51a…貫通孔、52…第3中間板、52a…貫通孔、53…下側端面板、53a…貫通孔、60…加硫用金型、61…シャフト、61a…係止部材、61d…スプリング、70…中間板、70a…貫通孔。
DESCRIPTION OF SYMBOLS 10 ... Mold for vulcanization, 11 ... Lower mold, 12 ... Upper mold, 12c ... Positioning hole, 13 ... Middle mold, 14 ... Upper shaft, 14a ... Tapered part, 15 ... Lower shaft, 15a ... Tapered part, 15b ... Screw part, 20 ... Unvulcanized rubber member, 30 ... first intermediate plate, 30a ... through hole, 31 ... second intermediate plate, 31a ... through hole, 32 ... lower end face plate, 32a ... screw hole, 33 ... upper side End plate, 33a ... through hole, 40 ... vulcanizing mold, 41 ... lower die, 41c ... positioning hole, 42 ... shaft, 42a ... tapered portion, 50 ... first intermediate plate, 50a ... through hole, 51 ... first 2 intermediate plate, 51a ... through hole, 52 ... third intermediate plate, 52a ... through hole, 53 ... lower end face plate, 53a ... through hole, 60 ... vulcanizing mold, 61 ... shaft, 61a ... locking member , 61d ... spring, 70 ... intermediate plate, 70a ... through hole.

Claims (5)

複数の未加硫ゴム部材及び中間板を交互に積層するとともに、その積層方向両端にそれぞれ端面板を配置して加硫成型する積層ゴム構造体の製造に用いる加硫用金型において、
前記各中間板にそれぞれ設けられて積層方向に配列される位置決め孔に積層方向一方及び他方からそれぞれ挿通可能な一対の位置決めシャフトを備え、
各位置決めシャフトの少なくとも一部を積層方向外側から積層方向内側に向かって徐々に外形が小さくなるように形成した
ことを特徴とする積層ゴム構造体の加硫用金型。
In a vulcanization mold used for manufacturing a laminated rubber structure in which a plurality of unvulcanized rubber members and intermediate plates are alternately laminated, and end face plates are arranged at both ends in the lamination direction and vulcanized and molded,
A pair of positioning shafts that can be inserted from the one and the other in the stacking direction into the positioning holes provided in each of the intermediate plates and arranged in the stacking direction,
A vulcanization mold for a laminated rubber structure, characterized in that at least a part of each positioning shaft is formed such that the outer shape gradually decreases from the outer side in the laminating direction toward the inner side in the laminating direction.
前記各位置決めシャフトのうち積層方向一端側の位置決めシャフトを積層方向一端側の端面板に着脱可能に形成した
ことを特徴とする請求項1記載の積層ゴム構造体の加硫用金型。
The vulcanization mold for a laminated rubber structure according to claim 1, wherein a positioning shaft on one end side in the stacking direction of each positioning shaft is detachably formed on an end face plate on one end side in the stacking direction.
複数の未加硫ゴム部材及び中間板を交互に積層するとともに、その積層方向両端にそれぞれ端面板を配置して加硫成型する積層ゴム構造体の製造に用いる加硫用金型において、
前記各中間板にそれぞれ設けられて積層方向に配列される位置決め孔に積層方向に挿通可能な位置決めシャフトを備え、
前記位置決めシャフトに少なくとも一部の中間板に積層方向一方のみから係止可能な係止部を設け、
前記位置決めシャフトに、その径方向に出没可能に形成され、径方向外側に突出することにより中間板の積層方向一方の面に係止可能な係止部材と、係止部材を位置決めシャフトの径方向外側に向かって付勢する付勢部材とを設け、
係止部材を、位置決めシャフトが中間板の位置決め孔に積層方向他方から挿入されると付勢部材の付勢力に抗して位置決めシャフトの径方向内側に移動するように形成した
ことを特徴とする積層ゴム構造体の加硫用金型。
In a vulcanization mold used for manufacturing a laminated rubber structure in which a plurality of unvulcanized rubber members and intermediate plates are alternately laminated, and end face plates are arranged at both ends in the lamination direction and vulcanized and molded,
A positioning shaft provided in each of the intermediate plates and inserted in the stacking direction into positioning holes arranged in the stacking direction;
Setting a lockable locking portion from one stacking direction only at least a portion of the intermediate plate to the positioning shaft,
A locking member formed on the positioning shaft so as to be able to project and retract in the radial direction and capable of locking to one surface in the stacking direction of the intermediate plate by projecting radially outward, and the locking member in the radial direction of the positioning shaft A biasing member that biases outward,
The locking member is formed so as to move radially inward of the positioning shaft against the biasing force of the biasing member when the positioning shaft is inserted into the positioning hole of the intermediate plate from the other side in the stacking direction. Mold for vulcanization of laminated rubber structures.
複数の未加硫ゴム部材及び中間板を交互に積層するとともに、その積層方向両端にそれぞれ端面板を配置して加硫用金型内で加硫することにより積層ゴム構造体を成型する積層ゴム構造体の製造方法において、
前記各中間板にそれぞれ設けられて積層方向に配列される位置決め孔に積層方向一方及び他方からそれぞれ挿通可能に形成されるとともに、少なくとも一部が積層方向外側から積層方向内側に向かって徐々に外形が小さくなるように形成された一対の位置決めシャフトを備えた加硫用金型内に、各中間板を位置決め孔が積層方向外側から積層方向内側に向かって内形の大きなものから順次配列されるように配置して加硫成型する
ことを特徴とする積層ゴム構造体の製造方法。
Laminated rubber which laminates a plurality of unvulcanized rubber members and intermediate plates alternately, and forms laminated rubber structures by placing end face plates at both ends in the laminating direction and vulcanizing them in a vulcanizing mold. In the manufacturing method of the structure,
The positioning holes provided in each of the intermediate plates are formed so that the positioning holes can be inserted from one and the other in the stacking direction, and at least part of the outer shape gradually extends from the outer side in the stacking direction toward the inner side in the stacking direction. In the vulcanizing mold having a pair of positioning shafts formed so as to be small, the positioning holes of the intermediate plates are sequentially arranged from the inner side toward the inner side in the stacking direction from the outer side in the stacking direction. A method for producing a laminated rubber structure, characterized by being arranged and vulcanized.
複数の未加硫ゴム部材及び中間板を交互に積層するとともに、その積層方向両端にそれぞれ端面板を配置して加硫用金型内で加硫することにより、積層ゴム構造体を成型する積層ゴム構造体の製造方法において、
前記各中間板にそれぞれ設けられて積層方向に配列される位置決め孔に積層方向に挿通可能に形成されるとともに、少なくとも一部の中間板に積層方向一方のみから係止可能な係止部を有する位置決めシャフトを備えた加硫用金型内に、位置決めシャフトの係止部が前記少なくとも一部の中間板に係止するように各中間板を配置して加硫成型するものであり、
前記位置決めシャフトの係止部は、その径方向に出没可能に形成されて径方向外側に突出することにより中間板の積層方向一方の面に係止可能な係止部材と、係止部材を位置決めシャフトの径方向外側に向かって付勢する付勢部材とを有し、
前記係止部材は、位置決めシャフトが中間板の位置決め孔に積層方向他方から挿入されると、付勢部材の付勢力に抗して位置決めシャフトの径方向内側に移動するように形成されている
ことを特徴とする積層ゴム構造体の製造方法。
Laminating to form a laminated rubber structure by laminating a plurality of unvulcanized rubber members and intermediate plates alternately, and placing end face plates at both ends in the laminating direction and vulcanizing them in a vulcanizing mold. In the method for producing a rubber structure,
Each of the intermediate plates is formed so as to be able to be inserted through the positioning holes arranged in the stacking direction in the stacking direction, and at least some of the intermediate plates have a locking portion that can be locked from only one of the stacking directions. In the vulcanization mold provided with a positioning shaft, each intermediate plate is disposed and vulcanized so that the locking portion of the positioning shaft is locked to the at least some of the intermediate plates ,
The locking portion of the positioning shaft is formed so as to be capable of protruding and retracting in the radial direction, and protrudes radially outward to position the locking member on the one surface in the stacking direction of the intermediate plate. A biasing member that biases the shaft radially outward.
The locking member is formed so as to move radially inward of the positioning shaft against the biasing force of the biasing member when the positioning shaft is inserted into the positioning hole of the intermediate plate from the other side in the stacking direction. A method for producing a laminated rubber structure characterized by the above.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0323688U (en) * 1989-07-19 1991-03-12
JPH10115344A (en) * 1996-10-09 1998-05-06 Toyo Tire & Rubber Co Ltd Base isolation layered rubber body and its manufacture and device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0323688U (en) * 1989-07-19 1991-03-12
JPH10115344A (en) * 1996-10-09 1998-05-06 Toyo Tire & Rubber Co Ltd Base isolation layered rubber body and its manufacture and device

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