WO2013091527A1 - 轮胎成型机及其助推反包方法 - Google Patents

轮胎成型机及其助推反包方法 Download PDF

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Publication number
WO2013091527A1
WO2013091527A1 PCT/CN2012/086846 CN2012086846W WO2013091527A1 WO 2013091527 A1 WO2013091527 A1 WO 2013091527A1 CN 2012086846 W CN2012086846 W CN 2012086846W WO 2013091527 A1 WO2013091527 A1 WO 2013091527A1
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WO
WIPO (PCT)
Prior art keywords
drum
boosting
forming drum
forming
boosting device
Prior art date
Application number
PCT/CN2012/086846
Other languages
English (en)
French (fr)
Inventor
袁仲雪
程继国
武守涛
杨慧丽
孙明新
Original Assignee
Yuan Zhongxue
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 Yuan Zhongxue filed Critical Yuan Zhongxue
Priority to PL12860460T priority Critical patent/PL2796278T3/pl
Priority to RU2014130008/05A priority patent/RU2572973C1/ru
Priority to BR112014014929-1A priority patent/BR112014014929B1/pt
Priority to US14/354,980 priority patent/US20150047771A1/en
Priority to EP12860460.0A priority patent/EP2796278B1/en
Publication of WO2013091527A1 publication Critical patent/WO2013091527A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/24—Drums
    • B29D30/26—Accessories or details, e.g. membranes, transfer rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/24—Drums
    • B29D30/26—Accessories or details, e.g. membranes, transfer rings
    • B29D30/2607—Devices for transferring annular tyre components during the building-up stage, e.g. from the first stage to the second stage building drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B29D2030/3207—Positioning the beads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B29D2030/3221—Folding over means, e.g. bladders or rigid arms
    • B29D2030/3228—Folding over means, e.g. bladders or rigid arms using one bladder acting on each side of the drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B29D2030/3221—Folding over means, e.g. bladders or rigid arms
    • B29D2030/3242—Folding over means, e.g. bladders or rigid arms and with means for pressing the bladder against the ply material, e.g. bladder guide shoes, cages, arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building tyres
    • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
    • B29D30/32—Fitting the bead-rings or bead-cores; Folding the textile layers around the rings or cores
    • B29D2030/3221—Folding over means, e.g. bladders or rigid arms
    • B29D2030/3264—Folding over means, e.g. bladders or rigid arms using radially expandable, contractible mechanical means, e.g. circumferentially spaced arms, spring rollers, cages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform

Definitions

  • the present invention relates to a tire building machine for preparing a rubber tire and a boosting and unpacking method thereof, and belongs to the field of rubber machinery.
  • a molding machine that completes the processing of the green tires, at least separately provided with a belt drum for preparing a belt tread assembly, and respectively transporting the carcass assembly and the belt tread assembly to complete the fitting , the forming drum of the reverse package operation.
  • a belt drum for preparing a belt tread assembly, and respectively transporting the carcass assembly and the belt tread assembly to complete the fitting , the forming drum of the reverse package operation.
  • two-sided capsules or finger-type anti-package rods are more commonly used.
  • the existing reverse-packing device usually introduces compressed air through an air cavity to axially drive a capsule or a finger-type reverse-packing rod that is sleeved on the main shaft of the forming drum, and the capsule or finger-type reverse-packing rod is squeezed from both sides of the forming drum. The side portion of the tire is pressed to complete the entire reverse wrapping process.
  • the application number is 200920019931.
  • the name is a mechanical forming drum
  • the main scheme is that the mechanical forming drum comprises a hollow cylindrical spindle, and a roller wire having left and right rotationally symmetric threads is arranged inside the spindle.
  • the finger type reverse wrapping device includes a cylinder sliding sleeve, a cylinder block and a plurality of evenly arranged along the outer circumference of the main shaft
  • the finger-shaped reverse-wrapped rod is provided with a reverse-packing roller at the front end portion of the reverse-packing rod, and the rear end portion of the reverse-packing rod is disposed at the rear end of the cylinder block, and the roller screw is connected to the cylinder sliding sleeve through the pin shaft and the key
  • the lock block assembly includes a lock block cylinder block disposed at a front end of the cylinder sliding sleeve, and the lock block cylinder block is fastened through the inner piston group and the link set to fasten the carcass lock block group.
  • the capsule or the finger-type reverse-packing rod relies on the thrust provided by the pneumatic device to realize the reverse-package, and the pneumatic thrust device is susceptible to the objective factors such as the air source pressure and the air cavity sealing performance, and is applied to both sides of the tire embryo.
  • the thrust is difficult to achieve synchronization, equal force, and it is difficult to maintain the force value range required by the design for a long time, and the pressure applied to the sidewall portion is unstable and unevenly distributed, thereby causing easy retention of air bubbles in the embryo. Subsequent processing quality and safe use of the tire.
  • the object of the prior art is to solve the problems of the prior art and adopt a mechanical assisting reverse wrapping method and device, by means of a mechanical boosting device on both sides of the forming drum to the capsule or The anti-wrapped rod simultaneously, isostatically and continuously provides axial thrust, thereby assisting the capsule or the reverse-wrapped rod to complete the entire reverse-packaging process, in order to achieve a pressure-stable, evenly distributed reverse-packing operation, and improve the quality of the green tire molding.
  • Another object of the invention is to achieve equal thrust and the same distance on both sides, and also to realize variable and controllable thrust, variable speed controllable, and variable position controllable in the reverse package process.
  • the object of the invention is also to simplify the design of the gas supply and delivery pipelines of the existing molding machine and the forming drum, and to reduce the design and use of related components, thereby reducing the overall manufacturing cost of the molding machine and optimizing the molding process.
  • the tire forming machine boosting reverse package method is as follows:
  • the forming machine includes a belt drum that is carried and driven by a belt drum chassis, and a building drum that is carried and driven by the forming drum chassis.
  • a first boosting device is disposed axially in the side portion of the belt drum, and a second boosting device is disposed in the axial direction of the side portion of the forming drum;
  • the first thrusting device and the second thrusting device push the capsule or the reverse-packing rod from the two sides of the forming drum to the center line, thereby simultaneously applying the same thrust assist.
  • the first boosting device and the second boosting device provide mechanical assisting force to the capsule or the anti-packaging rod during the axial movement, and the mechanical assisting thrust is characterized by being capable of maintaining simultaneous application and controlling the thrust amount. Adjustable, and the time to apply thrust can also be accurately controlled and adjusted.
  • the capsule or the anti-packing rod can simultaneously and equally apply a stable and evenly distributed pressure from the sidewall to the crown portion, so that it is difficult to leave bubbles between the composite layers, and the quality of the entire reverse-packing operation is better. high.
  • current forming drums are mainly classified into mechanical type (i.e., using a reverse wrap) and capsule type (i.e., using a capsule).
  • mechanical type i.e., using a reverse wrap
  • capsule type i.e., using a capsule
  • the maintenance cost will be reduced and the utilization rate of the equipment will be improved.
  • the capsules used in the capsule drums need to be replaced frequently, with high labor intensity, maintenance costs and time.
  • there are fewer mechanical forming drums currently used which are mainly limited by the fact that the anti-bending rod has a larger tensile side and a deeper indentation.
  • the tire forming machine boosting and unpacking method of the invention can be applied to both the mechanical forming drum and the capsule drum, and the above-mentioned controllable boosting device can be different according to the different specifications of the blank, the sidewall rubber and the process.
  • the difference in requirements is the amount of control force, the speed of the speed, and the precise control of the position during the reverse package process.
  • the belt drum chassis adopts a fixed installation structure, the first aid The distance between the push device and the equipotential station of the booster capsule or the reverse wrap is too long, and it is not conducive to maintaining a stable mechanical boosting pressure. Therefore, the following preferred improvement can be adopted:
  • the belt drum chassis is carried on the sliding track at the bottom and is reciprocally slidable in the horizontal direction under the driving of the slide driving device; before the push reverse operation, the belt drum chassis carries the first boosting device to slide to The drum is formed on one side such that the first boosting device and the second thrusting device are symmetrical along the vertical centerline of the forming drum.
  • the belt drum chassis first drives the first boosting device to slide to the waiting station before the boosting reverse bag, and then axially drives the first boosting device and the second boosting device simultaneously, and equally pushes the capsule or the reverse bag Rod.
  • the above improvement includes two ways, one is that the belt drum chassis axially slides, and the forming drum chassis also drives the second boosting device to slide to the waiting station before the boosting reverse package; the other is
  • the forming drum chassis is fixedly mounted, that is, the initial position of the second boosting device is in the waiting position before the boosting of the reverse bag.
  • the forming drum chassis is carried on the sliding track at the bottom and is reciprocally slidable in the horizontal direction under the driving of the slide driving device;
  • the forming drum chassis Before the push-back operation, the forming drum chassis carries the second boosting device (whether or not the belt drum chassis carries the first thrust device to move axially) to slide axially, thereby making the first boosting device
  • the second boosting device is symmetrical along the vertical centerline of the forming drum.
  • the belt drum chassis is fixedly installed, that is, the initial position of the first boosting device is in the waiting position before the boosting of the reverse package, and the forming drum chassis slides axially.
  • the second booster device is transported to the waiting station before the booster package.
  • the other is that the belt drum case and the forming drum case are axially slid, thereby conveying the first boosting device and the second boosting device to the symmetrical waiting station.
  • an annular, axially extendable booster disk may be respectively disposed at the ends of the first boosting device and the second boosting device.
  • the pusher pushes the capsule or the reverse wrap from the side.
  • the same axial drive is used in the belt drum case and the forming drum case to provide the first booster
  • the mechanical boosting force applied by the second boosting device is used in the belt drum case and the forming drum case.
  • a more reliable driving device is to provide a sliding shaft on the inner diameter of the main shaft of the belt drum case, and a booster disk on the outer side of the sliding shaft, at the inner side of the sliding shaft.
  • a set of axial drives is coupled such that the axial sliding of the sliding shaft translates into a laterally assisted thrust applied by the booster disk.
  • the tire building machine mainly includes a belt drum which is carried and driven by the belt drum case, and a building drum which is carried and driven by the forming drum box.
  • a first boosting device is axially disposed on the side of the belt drum, and the first boosting device can axially push the side of the forming drum under the driving of the axial driving device.
  • a second boosting device is disposed axially on the side of the forming drum, and the second boosting device can axially push the capsule on the other side of the forming drum or the opposite side under the driving of the axial driving device Package pole.
  • the belt drum chassis is carried on the sliding track at the bottom and is reciprocally slidable in the horizontal direction by the drive of the slide rail drive.
  • the forming drum chassis can also be carried on the sliding track at the bottom and can be reciprocally slid in the horizontal direction driven by the slide driving device.
  • an annular, axially extendable booster disk is disposed at the ends of the first boosting device and the second boosting device.
  • 1 is a partial schematic view of the tire forming machine implementing a boosting reverse package method
  • Figure 2 is a schematic view of the mechanical boosting
  • Figure 4 is a longitudinal sectional view of Figure 3;
  • the tire building machine mainly includes a belt drum 2 carried by the belt drum case 1 and a forming drum driven and driven by the forming drum case 4. 5 ;
  • the belt drum case 1 is carried on the bottom sliding track 10 and is reciprocally slidable in the horizontal direction under the driving of the slide driving device;
  • the forming drum case 4 is carried on the bottom sliding track 10 and is reciprocally slidable in the horizontal direction by the drive of the slide rail drive.
  • first boosting device 3 is disposed axially on the side of the belt drum 2, and the first boosting device 3 can axially push the capsule 8 on the side of the forming drum 5 under the driving of the axial driving device;
  • a second boosting device 6 is disposed axially on the side of the forming drum 5, and the second assisting device 6 can axially push the capsule 8 on the other side of the forming drum 5 under the driving of the axial driving device;
  • annular, axially extendable booster disk 7 is respectively disposed;
  • the forming drum housing 4 can employ an axial drive of the same structure.
  • a horizontal sliding shaft 12 is sleeved on the inner diameter of the main shaft 11, and a booster disk 7 is attached to the outer end of the sliding shaft 12, and a sliding connection is fixed at the inner side of the sliding shaft 12.
  • the saddle 13, the saddle 13 is simultaneously sleeved on the ball screws 14 on both sides, the end of the ball screw 14 is provided with a driven pulley 15;
  • An output pulley 17 is disposed at an output end of a reduction motor 16 , and a timing belt 18 is connected between the driving pulley 17 and the driven pulley 15 .
  • the tire forming machine boosting and unpacking method is that the belt drum case 1 is carried on the bottom sliding track 10, And can slide back and forth in the horizontal direction under the driving of the slide driving device;
  • the forming drum case 4 is carried on the sliding track 10 at the bottom and is reciprocally slidable in the horizontal direction under the driving of the slide driving device;
  • the belt drum case 1 and the forming drum case 4 respectively carry the first boosting device 3 and the second boosting device 6 to axially slide a certain distance, thereby making the first boosting
  • the device 3 and the second boosting device 6 are symmetrical along the vertical center line of the forming drum 5;
  • the first boosting device 3 and the second boosting device 6 push the capsule 8 from the both sides of the forming drum 5 toward the center, thereby simultaneously applying the same thrust.
  • an annular, axially extendable booster disk 7 for axially pushing the capsule 8 is provided, respectively.
  • a sliding shaft 12 is sleeved on the inner diameter of the main shaft 11, a booster disk 7 is attached to the outer end of the sliding shaft 12, and a set of axial driving devices are connected to the inner side end of the sliding shaft 12. Thereby, the axial sliding of the sliding shaft 12 is changed to the thrust of the laterally assisted pushing of the assisting disk 7.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)

Abstract

本发明所述轮胎成型机及其助推反包方法，采取机械助推的反包方法与装置，通过成型鼓两侧的机械助推装置向胶囊或反包杆同时、等力和持续地提供轴向推力，从而辅助胶囊或反包杆完成整个反包工艺，以期达到压力稳定、分布均衡的反包操作，提高胎胚成型质量。所述助推反包方法是，成型机包括由带束层鼓机箱承载并驱动的带束层鼓、由成型鼓机箱承载并驱动的成型鼓。在带束层鼓侧部沿轴向设置有第一助推装置、在成型鼓侧部沿轴向设置有第二助推装置；在反包制备胎胚过程中，沿成型鼓垂向中心线对称，第一助推装置和第二助推装置从成型鼓两侧向中心推动胶囊或反包杆，从而同时施加相同的推力辅助实施反包操作。

Description

轮胎成型机及其助推反包方法
技术领域
本发明涉及一种用于制备橡胶轮胎的轮胎成型机及其助推反包方法， 属于橡胶 机械领域。
背景技术
基于现有橡胶轮胎的制备工艺与设备结构， 通常采用二鼓、 三鼓或四鼓成型机， 制造设备和方法的不同决定了轮胎胎胚生产工艺的差别。
完成胎胚反包加工的成型机， 至少需单独设置有用于制备带束层一胎面组件的 带束层鼓、 以及分别将胎体组件和带束层一胎面组件输送至以完成贴合、 反包操作 的成型鼓。 为完成胎胚反包操作， 较普遍地采用两侧胶囊或指型反包杆。
现有的反包装置通常是通过气腔导入压縮空气， 以轴向地驱动套设于成型鼓主 轴上的胶囊或指型反包杆， 胶囊或指型反包杆从成型鼓两侧挤压胎侧部位， 从而完 成整个反包工艺过程。
如以下在先公开的专利， 申请号为 200920019931. 0， 名称为机械成型鼓， 其主 要方案是机械成型鼓包括一中空柱状主轴， 在主轴内部设置一具有左、 右旋对称螺 纹的滚轴丝杠， 沿所述主轴外圆周和垂直中心线对称地套设有锁块组件和指型反包 装置； 指型反包装置包括有气缸滑动套、 气缸体和沿主轴外圆周均匀设置的数个指 形反包杆， 反包杆的前端部设置有反包滚轮， 反包杆的后端部轴设于气缸体的后端， 滚轴丝杠通过销轴和键连接在气缸滑动套的后端； 所述的锁块组件包括设置在气缸 滑动套前端的锁块气缸体， 锁块气缸体通过其内部的活塞组和连杆组连接紧固胎体 锁块组。
上述现有技术方案， 胶囊或指型反包杆依靠气动装置提供的推力实现反包， 此 类气力推力装置易受到气源压力、 气腔密闭性能等客观因素的影响， 施加于胎胚两 侧的推力难以达到同步、 等力， 而且难以较长时间地维持在设计要求的力值范围内， 施加于胎侧部位的压力不稳定、 分布不均衡， 从而导致胎胚中易于留存气泡而影响 到轮胎的后续加工质量与安全使用。
有鉴于特提出本专利申请。 发明内容
本发明所述轮胎成型机及其助推反包方法， 其目的在于解决现有技术存在的问 题而采取机械助推的反包方法与装置， 通过成型鼓两侧的机械助推装置向胶囊或反 包杆同时、 等力和持续地提供轴向推力， 从而辅助胶囊或反包杆完成整个反包工艺， 以期达到压力稳定、 分布均衡的反包操作， 提高胎胚成型质量。
另一发明目的是， 能实现两侧推力相等和距离相同， 而且还可实现在反包过程 中推力可变可控， 速度可变可控， 位置可变可控。
发明目的还在于， 可简化现有成型机与成型鼓的供气与输送管路设计， 减少相 关部件设计与使用， 从而降低成型机整体制造成本和优化成型工艺。
为实现上述发明目的， 所述的轮胎成型机助推反包方法如下：
成型机包括由带束层鼓机箱承载并驱动的带束层鼓、 由成型鼓机箱承载并驱动 的成型鼓。
与现有技术的区别之处在于， 在带束层鼓侧部沿轴向设置有第一助推装置、 在 成型鼓侧部沿轴向设置有第二助推装置；
在反包制备胎胚过程中， 沿成型鼓垂向中心线对称， 第一助推装置和第二助推 装置从成型鼓两侧向中心推动胶囊或反包杆， 从而同时施加相同的推力辅助实施反 包操作。
如上述基本方案， 第一助推装置和第二助推装置在轴向移动过程中向胶囊或反 包杆提供机械助推力， 机械助推力的特点是能够保持同时施加、 推力大小可控、 可 调节， 而且施加推力的时间也能够准确控制与调节。
在机械助推作用下， 胶囊或反包杆能够同步、 等力地施加从胎侧至胎冠部位的 稳定、 分布均衡的压力， 因此复合层之间难以留有气泡， 整个反包操作质量较高。
另外， 当前的成型鼓主要分为机械式（即使用反包杆）和胶囊式（即使用胶囊）。 机械式成型鼓采用反包杆反包操作时， 会降低维护成本， 提高设备的利用率。 而胶 囊鼓所使用的胶囊需要频繁地更换， 劳动强度大， 维护成本和时间多。 但是目前采 用的机械式成型鼓较少， 主要受限于反包杆对胎侧拉伸较大， 压痕较深。
本发明所述的轮胎成型机助推反包方法， 可同时适用于机械式成型鼓和胶囊鼓， 通过上述可控的助推装置可根据胎胚规格的不同， 胎侧胶料的不同和工艺要求的不 同在反包过程中控制力的大小、 速度的快慢、 以及位置的精确控制。 考虑到成型机主机结构较为复杂、 轴向长度较长、 带束层鼓机箱与第一助推装 置距离成型鼓较远等因素， 若带束层鼓机箱采取固定式安装结构， 则第一助推装置 到达助推胶囊或反包杆的等位工位的距离过长， 也不利于维持稳定的机械助推压力， 因此可采取下述优选改进方案：
带束层鼓机箱承载于底部的滑行轨道， 并在滑轨驱动装置的驱动下可沿水平方 向往复滑动； 在实施助推反包操作前， 带束层鼓机箱承载第一助推装置滑动至成型 鼓一侧， 从而使得第一助推装置、 第二助推装置沿成型鼓的垂向中心线对称。
即带束层鼓机箱先带动第一助推装置滑动至助推反包前的等待工位， 再轴向驱 动第一助推装置与第二助推装置同时、 等力地推动胶囊或反包杆。
上述改进方案包括两种方式， 一种是带束层鼓机箱轴向滑动的同时， 成型鼓机 箱也相对地带动第二助推装置滑动至助推反包前的等待工位； 另一种是成型鼓机箱 采取固定安装方式， 即第二助推装置的初始位置就在助推反包前的等待工位。
同样地基于上述考虑因素， 考虑到若成型鼓机箱采取固定式安装结构， 则等待 带束层鼓机箱轴向移动至助推工位的时间较长， 毕竟胎胚成型的主要结构部件与操 作工位还是设置在成型鼓一侧， 因此也可采取下述优化方案：
成型鼓机箱承载于底部的滑行轨道， 并在滑轨驱动装置的驱动下可沿水平方向 往复滑动；
在实施助推反包操作前， 成型鼓机箱承载第二助推装置 （不管带束层鼓机箱是 否承载着第一助推装置轴向地移动） 轴向地滑动， 从而使得第一助推装置、 第二助 推装置沿成型鼓的垂向中心线对称。
在此也包括有两种方式， 一种是带束层鼓机箱采取固定安装方式， 即第一助推 装置的初始位置就在助推反包前的等待工位， 成型鼓机箱轴向地滑动以将第二助推 装置输送至助推反包前的等待工位。 另一种是即带束层鼓机箱、 成型鼓机箱均轴向 滑动， 从而将第一助推装置、 第二助推装置输送至对称的等待工位。
从现有成型机通常采取的布局结构出发， 较为可行的优选方案是，
为进一步地提高所施加反包压力的均衡性， 可在所述第一助推装置、 第二助推 装置的端部， 分别设置有一环形的、 可沿轴向伸出的助推盘， 助推盘从侧向上推动 胶囊或反包杆。
在带束层鼓机箱、 成型鼓机箱中采取相同的轴向驱动装置， 以提供第一助推装 置、 第二助推装置施加的机械助推力。
当然对应于机械成型鼓、 胶囊鼓， 需配置有适应胶囊反包、 机械反包方式的不 同结构的助推盘工装。
以带束层鼓机箱为例， 较为可靠的驱动装置方案是， 在带束层鼓机箱的主轴内 径上套设一滑动轴， 在滑动轴的外侧端安装助推盘， 在滑动轴的内侧端连接一组轴 向驱动装置， 从而由滑动轴的轴向滑动转变为助推盘施加侧向助推的推力。 基于本发明的设计构思和采用上述助推反包方法， 可实现下述轮胎成型机结构 的改进：
即轮胎成型机主要包括， 由带束层鼓机箱承载并驱动的带束层鼓、 由成型鼓机 箱承载并驱动的成型鼓。
与现有技术的区别之处在于， 在带束层鼓侧部沿轴向设置有第一助推装置， 在 轴向驱动装置的驱动下第一助推装置可沿轴向推动成型鼓一侧的胶囊或反包杆； 在成型鼓侧部沿轴向设置有第二助推装置， 在轴向驱动装置的驱动下第二助推 装置可沿轴向推动成型鼓另一侧的胶囊或反包杆。
具体地， 带束层鼓机箱承载于底部的滑行轨道， 并在滑轨驱动装置的驱动下可 沿水平方向往复滑动。
进一步地， 成型鼓机箱也可承载于底部的滑行轨道， 并在滑轨驱动装置的驱动 下可沿水平方向往复滑动。
另外， 在所述第一助推装置、 第二助推装置的端部， 分别设置有一环形的、 可 沿轴向伸出的助推盘。 综上内容， 本发明轮胎成型机及其助推反包方法具有以下优点与有益效果：
1、 采取机械助推的反包方法与装置， 能够向胶囊或反包杆同时、 等力和持续地提供 轴向推力， 在整个反包工艺中实现压力稳定、 分布均衡的操作， 胎胚成型质量较 高、 有效地降低复合层之间留有气泡的机率。
2、 能够简化现有的成型机气力驱动与输送管路设计， 减少相关部件以降低成型机整 体制造成本、 并且优化了成型工艺。
附图说明 现结合附图对本发明做进一步的说明，
图 1是所述轮胎成型机实现助推反包方法的局部示意图；
图 2是机械助推时的示意图；
图 3是所述带束层鼓机箱的结构示意图；
图 4是图 3的纵向截面示意图；
如图 1至图 4所示， 带束层鼓机箱 1， 带束层鼓 2， 第一助推装置 3， 成型鼓机 箱 4， 成型鼓 5， 第二助推装置 6， 助推盘 7， 胶囊 8， 滑行轨道 10， 主轴 11， 滑动 轴 12， 滑鞍 13， 滚珠丝杠 14， 从动滑轮 15， 减速电机 16， 主动滑轮 17， 同步带 18。 具体实施方式
实施例 1， 如图 1至图 4所示， 所述轮胎成型机主要包括有， 由带束层鼓机箱 1 承载并驱动的带束层鼓 2、 由成型鼓机箱 4承载并驱动的成型鼓 5 ;
带束层鼓机箱 1承载于底部的滑行轨道 10， 并在滑轨驱动装置的驱动下可沿水 平方向往复滑动；
成型鼓机箱 4承载于底部的滑行轨道 10， 并在滑轨驱动装置的驱动下可沿水平 方向往复滑动。
其中，在带束层鼓 2侧部沿轴向设置有第一助推装置 3， 在轴向驱动装置的驱动 下第一助推装置 3可沿轴向推动成型鼓 5—侧的胶囊 8 ;
在成型鼓 5侧部沿轴向设置有第二助推装置 6，在轴向驱动装置的驱动下第二助 推装置 6可沿轴向推动成型鼓 5另一侧的胶囊 8;
在第一助推装置 3、 第二助推装置 6的端部， 分别设置有一环形的、 可沿轴向伸 出的助推盘 7 ;
在带束层鼓机箱 1、 成型鼓机箱 4中可采用相同结构的轴向驱动装置。
以带束层鼓机箱 1为例， 在其主轴 11的内径上套设一水平的滑动轴 12， 在滑动 轴 12的外侧端安装助推盘 7， 在滑动轴 12的内侧端固定连接一滑鞍 13， 滑鞍 13同 时套设在两侧的滚珠丝杠 14上， 滚珠丝杠 14的端部设置有从动滑轮 15;
一减速电机 16的输出端套设一主动滑轮 17，主动滑轮 17与从动滑轮 15之间连 接有同步带 18。 所述的轮胎成型机助推反包方法是，带束层鼓机箱 1承载于底部的滑行轨道 10， 并在滑轨驱动装置的驱动下可沿水平方向往复滑动；
成型鼓机箱 4承载于底部的滑行轨道 10， 并在滑轨驱动装置的驱动下可沿水平 方向往复滑动；
在实施助推反包操作前， 带束层鼓机箱 1、成型鼓机箱 4分别地承载第一助推装 置 3、 第二助推装置 6相对地轴向滑动一段距离， 从而使得第一助推装置 3、 第二助 推装置 6沿成型鼓 5的垂向中心线对称；
在反包制备胎胚过程中， 沿成型鼓 5垂向中心线对称， 第一助推装置 3和第二 助推装置 6从成型鼓 5两侧向中心推动胶囊 8，从而同时施加相同的推力辅助实施反 包操作。
上述助推反包方法中， 在第一助推装置 3、第二助推装置 6的端部， 分别设置有 用于轴向推动胶囊 8的环形的、 可沿轴向伸出的助推盘 7。
以带束层鼓机箱 1为例， 在主轴 11的内径上套设一滑动轴 12， 在滑动轴 12的 外侧端安装助推盘 7， 在滑动轴 12的内侧端连接一组轴向驱动装置， 从而由滑动轴 12的轴向滑动转变为助推盘 7施加侧向助推的推力。

Claims

1、 一种轮胎成型机助推反包方法， 成型机包括由带束层鼓机箱 （1) 承载并驱 动的带束层鼓 （2) 、 由成型鼓机箱 （4) 承载并驱动的成型鼓 （5) ，
其特征在于： 在带束层鼓 （2) 侧部沿轴向设置有第一助推装置 （3) 、 在成型 鼓 （5) 侧部沿轴向设置有第二助推装置 （6) ；
在反包制备胎胚过程中， 沿成型鼓 （5) 垂向中心线对称， 第一助推装置 （3) 和第二助推装置 （6) 从成型鼓 （5) 两侧向中心推动胶囊或反包杆， 从而同时施加 相同的推力辅助实施反包操作。
2、 根据权利要求 1所述的轮胎成型机助推反包方法， 其特征在于： 带束层鼓机 箱 （1) 承载于底部的滑行轨道 （10) ， 并在滑轨驱动装置的驱动下可沿水平方向往 复滑动；
在实施助推反包操作前， 带束层鼓机箱 （1) 承载第一助推装置 （3) 滑动至成 型鼓 （5) —侧， 从而使得第一助推装置 （3) 、 第二助推装置 （6) 沿成型鼓 （5) 的垂向中心线对称。
3、 根据权利要求 1或 2所述的轮胎成型机助推反包方法， 其特征在于： 成型鼓 机箱 （4) 承载于底部的滑行轨道（10) ， 并在滑轨驱动装置的驱动下可沿水平方向 往复滑动；
在实施助推反包操作前， 带束层鼓机箱 （1) 、 成型鼓机箱 （4) 各自承载第一 助推装置 （3) 、 第二助推装置 （6) 相对地滑动， 使得第一助推装置 （3) 、 第二助 推装置 （6) 沿成型鼓 （5) 的垂向中心线对称。
4、 根据权利要求 3所述的轮胎成型机助推反包方法， 其特征在于： 在所述第一 助推装置 （3) 、 第二助推装置 （6) 的端部， 分别设置有一环形的、 可沿轴向伸出 的助推盘 （7) 。
5、 根据权利要求 4所述的轮胎成型机助推反包方法， 其特征在于： 所述的带束 层鼓机箱 （1) ， 在其主轴 （11) 的内径上套设一滑动轴 （12) ， 在滑动轴 （12) 的 外侧端安装助推盘 （7) ， 在滑动轴 （12) 的内侧端连接一组轴向驱动装置， 从而由 滑动轴 （12) 的轴向滑动转变为助推盘 （7) 施加侧向助推的推力。
6、 一种轮胎成型机， 包括由带束层鼓机箱 （1) 承载并驱动的带束层鼓 （2) 、 由成型鼓机箱 （4) 承载并驱动的成型鼓 （5) ， 其特征在于：
在带束层鼓 （2) 侧部沿轴向设置有第一助推装置 （3) ， 在轴向驱动装置的驱 动下第一助推装置 （3) 可沿轴向推动成型鼓 （5) —侧的胶囊或反包杆；
在成型鼓 （5) 侧部沿轴向设置有第二助推装置 （6) ， 在轴向驱动装置的驱动 下第二助推装置 （6) 可沿轴向推动成型鼓 （5) 另一侧的胶囊或反包杆。
7、 根据权利要求 6所述的轮胎成型机， 其特征在于： 带束层鼓机箱 （1) 承载 于底部的滑行轨道 （10) ， 并在滑轨驱动装置的驱动下可沿水平方向往复滑动。
8、 根据权利要求 6或 7所述的轮胎成型机， 其特征在于： 成型鼓机箱 （4) 承 载于底部的滑行轨道 （10) ， 并在滑轨驱动装置的驱动下可沿水平方向往复滑动。
9、根据权利要求 8所述的轮胎成型机，其特征在于：在所述第一助推装置（3)、 第二助推装置 （6) 的端部， 分别设置有一环形的、 可沿轴向伸出的助推盘 （7) 。
10、根据权利要求 9所述的轮胎成型机，其特征在于：所述的带束层鼓机箱（1)， 在其主轴 （11) 的内径上套设一滑动轴 （12) ， 在滑动轴 （12) 的外侧端安装助推 盘 （7) ， 在滑动轴 （12) 的内侧端固定连接一滑鞍 （13) ， 滑鞍 （13) 同时套设在 两侧的滚珠丝杠 （14) 上， 滚珠丝杠 （14) 的端部设置有从动滑轮 （15) ；
一减速电机 （16) 的输出端套设一主动滑轮 （17) ， 主动滑轮 （17) 与从动滑 轮 （15) 之间连接有同步带 （18) 。
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