公开(公告)号：US5075067A

公开(公告)日：1991-12-24

申请号：US385605

申请日：1989-07-26

申请人： Rene L. Rockarts ,  Donald R. Bartley

发明人： Rene L. Rockarts ,  Donald R. Bartley

IPC分类号： B29C33/10

CPC分类号： B29C33/10 ,  B29D2030/0617 ,  B29L2030/00 ,  Y10S425/812

摘要： A split tire mold having a tread ring in which provision is made for venting air circumferentially across the inner surface of the tread ring so that the air escapes from the parting line of the mold halves, dispenses with widely used, conventional, radially protruding vent stubs. The air is vented through "butterfly-shaped" or "double-wedge-shaped" arch-vents which provide passage for trapped air above each tread block of the tread as it is moved against the inner surface of the tread ring. The shape of the arch-vent passages and the angulation of the wedges is critical to the effectiveness of the arch-vent which forms an arch-vent bridge of cured rubber in a cured tire. The configuration of the bridge allows as cured tire to be easily removed from the mold cavity without leaving a broken-off piece of the rubber bridge to plug the arch-vents. This arch-vent design leaves unobtrusive flat-sided, narrow wedge-shaped pieces of rubber as the arch-vent stubs, tapered in two directions. The arch-vent stubs, when viewed in the radial direction towards the center of the tire, are so unobtrusive as to be cosmetically acceptable in a finished tire. The upper surface of the arch-vent is close to the inner surface of the tread ring and essentially horizontal, while the lower surface of each arch-vent is inclined at an angle in the range from 30.degree.-50.degree. to the horizontal plane, but in opposite directions. An angle in this range provides surprising strength in the base area of the arch-vent stub so that, upon stripping the tire from the mold, the arch-vent bridge of cured rubber breaks cleanly and reliably at the narrowest and weakest point in the bridge.

摘要翻译： 一种具有胎圈环的分割轮胎模具，其中设置有用于沿胎面环的内表面周向排气的空气，使得空气从半模的分型线逸出，省去了广泛使用的常规的径向突出的出气口 。 空气通过“蝴蝶形”或“双楔形”拱形通风孔排放，当胎面相对于胎面环的内表面移动时，它们在胎面的每个胎面花纹块之上提供通道。 拱形通道的形状和楔形的角度对于在固化轮胎中形成固化橡胶拱形桥的拱形孔的有效性是至关重要的。 桥的构造允许作为硫化轮胎容易地从模腔中移除而不留下橡胶桥的断裂片来堵塞拱形孔。 这种拱形设计留下不引人注意的扁平，狭窄的楔形橡胶片作为拱形出口桩，在两个方向上逐渐变细。 当从径向朝向轮胎的中心观察时，拱形出口短柱是非常不引人注目的，在成品轮胎中在化妆品上是可接受的。 拱形孔的上表面靠近胎面环的内表面并且基本上是水平的，而每个拱形孔的下表面以与水平面成30°-50°的角度倾斜， 但在相反的方向。 该范围内的角度在拱形基座的基部区域提供令人惊奇的强度，使得在从模具剥离轮胎时，固化橡胶的拱形桥在桥的最窄和最弱点处清洁可靠地断裂 。

公开(公告)号：US4881881A

公开(公告)日：1989-11-21

申请号：US153179

申请日：1988-02-08

申请人： Rene L. Rockarts ,  Donald R. Bartley

发明人： Rene L. Rockarts ,  Donald R. Bartley

IPC分类号： B60C11/11 ,  B29C33/10 ,  B29C33/42 ,  B29D30/00 ,  B29K21/00 ,  B29L30/00

CPC分类号： B29C33/10 ,  B29D2030/0617 ,  B29L2030/00 ,  Y10S425/812

摘要： A split tire mold having a tread ring having arch-vents for venting air circumferentially across the inner surface of the tread ring so that air escapes from the parting line of the mold halves. The "dougle-wedge-shaped" arch-vents provide passage for trapped air above each tread block of the tread as it is moved against the inner surface of the tread ring. The shape of the arch-vent passages and the angulation of the wedges is critical to the effectiveness of the arch-vent which forms an arch-vent bridge of cured rubber in a cured tire. The configuration of the bridge allows a cured tire to be easily removed from the mold cavity without leaving a broken-off piece of the rubber bridge to plug the arch-vents. This arch-vent design leaves flat-sided, narrow wedge-shaped pieces of rubber as the arch-vent stubs, tapered in two directions. The arch-vent stubs, viewed in the radial direction are so unobtrusive as to be cosmetically acceptable in a finished tire. The upper surface of the arch-vent is close to the inner surface of the tread ring and essentially horizontal, while the lower surface of each arch-vent is inclined at an angle in the range from 30.degree. -50.degree. to the horizontal plane, but in opposite directions. An angle in this range provides strength in the base area of the arch-vent stub so that, upon stripping the tire from the mold, the arch-vent bridge of cured rubber breaks cleanly and reliably at the narrowest and weakest point in the bridge.

公开(公告)号：US4531902A

公开(公告)日：1985-07-30

申请号：US551545

申请日：1983-11-14

申请人： Terrence M. Stuhldreher ,  Rene L. Rockarts

发明人： Terrence M. Stuhldreher ,  Rene L. Rockarts

IPC分类号： B29C33/10 ,  B29C33/46 ,  B29C37/00 ,  B29C43/12 ,  B29C1/00

CPC分类号： B29D30/0654 ,  B29C33/10 ,  B29C33/46 ,  B29C37/0014 ,  B29C37/0017 ,  B29C43/12 ,  Y10S425/812

摘要： The quality and useful life of curing bladders used in standard "Bag-O-Matic" tire vulcanizing presses is greatly improved by replacing the standard split two-piece core of the bladder mold with a unitary core which forms a disc-like rubber diaphragm below the core and integral with the rubber curing bladder at the periphery of the core. A unique base plate fits in the lower mold half below the core and has a grooved upper surface to hold the diaphragm in place so that the core can be removed manually or automatically with the assistance of internal air pressure.

摘要翻译： 标准“Bag-O-Matic”轮胎硫化机中使用的固化气囊的质量和使用寿命通过用整体式芯体代替囊状模具的标准分体式两片式芯体而大大提高，该芯片形成下面的盘状橡胶隔膜 核心与核心周边处的橡胶固化囊一体化。 独特的底板装配在芯部下方的下半模中，并具有带槽的上表面，以将隔膜保持在适当位置，使得可以在内部空气压力的帮助下人工或自动地卸下芯。