WO2013139007A1 - 无气孔轮胎活络模花纹块、活络模具及其清洗方法 - Google Patents

无气孔轮胎活络模花纹块、活络模具及其清洗方法 Download PDF

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Publication number
WO2013139007A1
WO2013139007A1 PCT/CN2012/072718 CN2012072718W WO2013139007A1 WO 2013139007 A1 WO2013139007 A1 WO 2013139007A1 CN 2012072718 W CN2012072718 W CN 2012072718W WO 2013139007 A1 WO2013139007 A1 WO 2013139007A1
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WO
WIPO (PCT)
Prior art keywords
exhaust
mold
cleaning
block
axial
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.)
Ceased
Application number
PCT/CN2012/072718
Other languages
English (en)
French (fr)
Inventor
张伟
张任
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.)
Himile Mechanical Manufacturing Co Ltd
Original Assignee
Himile Mechanical Manufacturing 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 Himile Mechanical Manufacturing Co Ltd filed Critical Himile Mechanical Manufacturing Co Ltd
Priority to EP12871655.2A priority Critical patent/EP2829376B1/en
Priority to US14/386,713 priority patent/US9283721B2/en
Priority to HUE12871655A priority patent/HUE041998T2/hu
Priority to KR1020147028509A priority patent/KR101620851B1/ko
Priority to IN1790MUN2014 priority patent/IN2014MN01790A/en
Priority to RS20190214A priority patent/RS58406B1/sr
Priority to JP2015500736A priority patent/JP5925953B2/ja
Priority to PCT/CN2012/072718 priority patent/WO2013139007A1/zh
Publication of WO2013139007A1 publication Critical patent/WO2013139007A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/70—Maintenance
    • B29C33/72—Cleaning
    • 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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0662—Accessories, details or auxiliary operations
    • 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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B29D2030/0607—Constructional features of the moulds
    • 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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B29D2030/0607—Constructional features of the moulds
    • B29D2030/0609—Constructional features of the moulds the moulds being made of a plurality of laminations, e.g. thin plates, adjacent one another, so as to create the moulding cavity
    • 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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0606—Vulcanising moulds not integral with vulcanising presses
    • B29D2030/0607—Constructional features of the moulds
    • B29D2030/0617—Venting devices, e.g. vent plugs or inserts
    • 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)
    • B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
    • B29D30/0662—Accessories, details or auxiliary operations
    • B29D2030/0663—Mould maintenance, e.g. cleaning, washing, repairing

Definitions

  • the present invention relates to a tire mold, and more particularly to a non-porous tire active mold block, an active mold and a cleaning method thereof for use in the field of tire active molds. Background technique
  • the existing tire mold In the existing tire vulcanization process, in order to release the air in the mold cavity, so that the rubber can be evenly distributed in the mold, the existing tire mold has a plurality of vent holes in the mold cavity. Drilling is usually used to form the required venting holes. Since the boring of the hole ends is required after the drilling process is completed, the mold manufacturing process is increased, and the manufacturing cost of the mold is increased. On the other hand, the vulcanization is performed. During the process, since the exhaust in the tread area is discharged through the circular pores, these pores are usually located on the top surface of the mold and penetrated to the outer surface of the mold.
  • the unvulcanized raw rubber Will be squeezed out of the top cavity of the mold; when the air is discharged from the mold, the rubber is squeezed into the vent hole of the drill to form a bristles, some of which may break in the vent hole of the mold, which may hinder The discharge of air in the cavity causes the rubber to not completely fill the entire mold cavity.
  • the general cleaning operation is to use a drill bit to drill the rubber in each air hole, which is very time-consuming and affects the production efficiency. Most of the rubber is standing on the tire with the mold release. In order to remove the rubber, the person and the corresponding equipment have to be set up. Trimming not only affects the appearance quality of the tire, but also wastes the rubber compound and increases the production cost.
  • US20070009623 which is mounted side by side with a plurality of relatively thin annular plates in two opposing mold halves or a movable mold cover, so as to avoid gaps on one or both sides.
  • the gas is discharged from the gap to ensure that the surface of the vulcanized tire is smooth.
  • the mold structure of US20070009623 has no circumferential exhaust groove, the exhaust gas is discharged to the back of the block through the radial exhaust groove, the distance is long, the exhaust effect is poor, and it is easy to block, and once blocked, due to the blockage, The distance is too long to be easily cleaned, and the back of the block is matched with the slider.
  • the mating surface needs to process a plurality of exhaust grooves through which air is taken out, which increases the processing cost.
  • the problem addressed by the present invention is to provide a non-porous tire active mold block, an active mold and a cleaning method for improving or overcoming one or more of the drawbacks of existing non-porous molds.
  • a non-porous tire active mold block for composing a tire active mold comprising a plurality of upper and lower stacked patterns, the blocks having an exhaust passage connecting the inner circumference of each of the patterns and the end faces of the blocks
  • the exhaust passage includes an axial exhaust hole axially disposed on the block and communicating with each of the segments and communicating with the end surface of the block, the exhaust passage serving as a cleaning passage when the mold is cleaned, the exhaust
  • the axial venting opening of the passage serves as a cleaning medium inlet.
  • the present invention also provides a non-porous tire active mold, the mold comprising a plurality of non-porous tire active mold blocks as described above, the exhaust passage communicating with the mold cavity and the outside of the mold, the axis of the exhaust passage
  • the vent hole is axially disposed on the block and communicates with each of the knives and communicates with the outside of the mold, and the exhaust passage serves as a cleaning passage when the mold is cleaned.
  • the present invention also provides a cleaning method for the aforementioned non-porous tire active mold, wherein the mold uses the exhaust passage in the block as a cleaning passage, and the axial exhaust hole of the exhaust passage serves as a cleaning medium. Enter.
  • the gas between the mold and the tread passes through the venting slit of the mold into the circumferential direction between the pattern and the pattern under the action of the internal pressure of the capsule.
  • the venting groove then passes through the circumferential venting groove and enters the radial venting groove, and then enters the axial venting hole through the radial venting groove to discharge the gas to the outside of the mold.
  • the mold of the invention has a circumferential exhaust groove, the exhausting distance is short, the effect is good, the clogging is not easy, and the cleaning is convenient, because the axial exhaust hole of the circumferential exhaust groove and the end surface penetrates, Directly connected to the outside, so the mating surface does not need to be machined again.
  • the axial exhaust hole of the end face of the mold is first sealed, the inner cavity of the mold is formed into an approximately closed container, and one of the cleaning holes is injected into the cavity of the mold through one of the end faces.
  • An organic solution under a certain pressure, causes the organic solution to be discharged through the exhaust slit, and the discharge process is to the exhaust gap Cleaning process.
  • this cleaning method is more thorough and effective, the operation is simple and the cleaning cost is low. Therefore, the present invention has achieved significant breakthroughs in both processing costs and cleaning costs.
  • Fig. 1 is a schematic longitudinal cross-sectional view showing a specific embodiment of a non-porous tire active mold block of the present invention
  • Fig. 2 is a partially enlarged view of a portion I of Fig. 1.
  • Figure 3 is a view taken along the line A in Figure 1.
  • Figure 4 is a cross-sectional view taken along the line B-B of Figure 3 .
  • Figure 5 is a schematic view showing the structure of a pattern of the non-porous tire active mold block of the present invention.
  • Fig. 6 is a schematic view showing the structure of a non-porous tire active mold formed by assembling the blocks of the previous embodiment of the present invention.
  • Fig. 7 is a schematic view showing the exhausting process of the mold in the previous embodiment by taking a certain pattern as an example, and the reverse process is the cleaning process. detailed description
  • the invention firstly provides a non-porous tire active mold block for composing a tire active mold, wherein the block comprises a plurality of upper and lower stacked patterns, the blocks having inner circumferences and patterns connecting the respective patterns
  • An exhaust passage of the end face of the block the exhaust passage includes an axial exhaust hole axially disposed on the block, the axial exhaust hole communicating with each of the segments and communicating with the end face of the block.
  • the gas between the mold and the tread can enter the circumference between the pattern and the pattern through the exhaust slit of the mold.
  • the gas is discharged to the outside of the mold by passing it into the exhaust groove and then entering the radial exhaust groove through the radial exhaust groove, and then entering the axial exhaust hole through the radial exhaust groove.
  • the present invention also provides a non-porous tire active mold, the mold comprising a plurality of blocks of the above structure, the exhaust passage communicating with the mold cavity and the outside of the mold, the axial exhaust hole of the exhaust passage The axial direction is disposed on the block and communicates with each of the patterns and communicates with the outside of the mold, and the exhaust passage serves as a cleaning passage when the mold is cleaned.
  • the non-porous tire active mold since the non-porous tire active mold has the above structure, the mold can utilize the exhaust passage in the block as a washing passage, and the axial exhaust hole of the exhaust passage serves as a cleaning medium inlet.
  • the cleaning medium can be a liquid or gas cleaning medium.
  • FIG. 1 and FIG. 2 it is a schematic structural view of a specific embodiment of a non-aperture tire active mold block according to the present invention.
  • a plurality of blocks are combined in a circumferential direction to form an active mold, wherein the block 100 is composed of A plurality of the crests 1 are stacked one on another, and the inner diameters of the respective crests 1 are not completely the same, so that the inner peripheral surface of the combined block 100 is in conformity with the shape of the tire, and a mold pattern corresponding to the tread pattern is formed, combined
  • FIG. 1 and FIG. 2 it is a schematic structural view of a specific embodiment of a non-aperture tire active mold block according to the present invention.
  • a plurality of blocks are combined in a circumferential direction to form an active mold, wherein the block 100 is composed of A plurality of the crests 1 are stacked one on another, and the inner diameters of the respective crests 1 are not completely the same, so that the inner peripheral surface of the combined block 100 is in
  • the block 100 has an exhaust passage 20 that communicates the inner peripheral surface 11 of each of the fins 1 and the block end surface 12, and the exhaust passage 20 includes an exhaust slit 21, a circumferential exhaust groove 22, and a radial direction. a venting groove 23 and an axial venting hole 27 axially disposed in the block, the exhaust vent 21 being located between the adjacent two ribs 1 and communicating with the inner circumferential surface of the block 100, which has The depth is preferably such that the air in the mold cavity 200 (shown in FIG. 6) can be discharged and the rubber does not flow out during the vulcanization process, and the circumferential exhaust groove extends circumferentially to form adjacent two of the vanes.
  • the radial exhaust groove communicates with the circumferential exhaust groove and the axial exhaust hole
  • the axial exhaust hole 27 communicates with the radial exhaust groove 23 of each of the fins 1 and
  • the end faces 12 of the blocks 100 are in communication to discharge air in the cavity of the mold.
  • the exhaust passage in the embodiment is exemplified only for the convenience of understanding, and is not to be construed as limiting the invention, that is, the exhaust passage may adopt other forms and structures, for example, the radial direction.
  • the exhaust groove 23 may or may not be provided as needed.
  • the axial exhaust hole may be directly connected to the circumferential exhaust groove.
  • two or more fastening screw holes 14 are formed on each of the crests 1 so that the fastening screws 31 can be fixed by the stacking assembly; and, in order to ensure circumferential positioning, A positioning pin hole 15 is formed in the blade 1 in the axial direction so as to be inserted into the positioning pin, and the respective pawls 1 are vertically stacked by the fastening screw 31 and the positioning pin 32 to form a block.
  • four fastening screw holes 14 and four positioning pin holes 15 are provided, and the center of each fastening screw hole is located on a concentric circle on the opposite outer side, and the center of each positioning pin hole 15 is located on the opposite inner side. Concentric circles, but not limited to this, as needed, the form, number, and position of the fastening screw holes 14 and the positioning pin holes 15 can be adjusted as needed, and will not be further described herein.
  • the block 100 of the present embodiment is provided with three axial exhaust holes, including a central axial exhaust hole 26 at the middle of the block and two sections respectively adjacent to the sides of the block 100.
  • the side axial exhaust hole 27, and the axial exhaust plugs of each axial exhaust hole can be detachably sealed by a wire plug.
  • a venting hole 27, which is in an open state during vulcanization of the mold, is used for venting, and is in a sealed state during mold cleaning.
  • the central axial venting opening 26 of the non-porous mold is opened and vented during the vulcanization process, and the organic solution is injected into the hole during the cleaning process to complete the cleaning. It should be noted that those skilled in the art can appropriately adjust the form, number and position of the axial exhaust holes according to actual needs, and details are not described herein again.
  • Fig. 6 is a schematic view showing the structure of a non-porous tire active mold formed by the block assembly of the previous embodiment of the present invention; wherein the serial number 100 is indicated as a non-porous mold (block).
  • the upper sidewall board 201 and the upper cover 202 constitute an upper sidewall component
  • the lower sidewall panel 203 and the base 204 constitute a lower sidewall component
  • the block 100 and the slider 205 form a pattern component
  • the mounting ring 207 and the heat insulating sleeve 208 form a mold sleeve component
  • the mold sleeve component is connected to the vulcanizing unit through the mounting ring 207, and applies a force to the entire mold to realize an active movement of the mold freely opening and closing under the action of the force.
  • the non-porous active mold formed by the above-mentioned blocks it is possible to perform reverse cleaning by using the exhaust passages of the respective blocks.
  • the mold is first closed to the side axial exhaust hole 27 of the two side sections, and the mold cavity 200 is formed into an approximately closed container, and then passed through one of the side cleaning holes 27 of the section ( Or the central venting hole 26) injecting a cleaning medium (for example, an organic solution) into the mold cavity 200, and discharging the cleaning medium through the exhaust slit 11 under a certain pressure (preferably 5 50 MPa), please refer to FIG. 7
  • the discharge process is the cleaning process of the exhaust slit 11. Compared with other methods, this cleaning method is more thorough and effective, the operation is simple and the cleaning cost is low.
  • the circumferential exhaust groove 22 and the radial exhaust groove 23 on the blade 1 are preferably smooth and streamlined.
  • the circumferential exhaust groove 22, the radial exhaust groove 23, and the axial exhaust hole are connected or curved in a smooth transition structure, so that the cleaning medium can be injected and passed more smoothly during the cleaning process.
  • the structural parameters of the relevant flow channel are not limited and can be determined or adjusted according to specific conditions.
  • the side axial exhaust holes are relatively close to the circumferential outer edge of the block, and the central axial exhaust holes are relatively close to the circumferential inner edge of the block.
  • the axial exhaust holes are evenly arranged in the circumferential direction for better exhaust and cleaning effects.
  • the exhaust slit 11 between the adjacent fins 1 is formed by a certain range of cutting from at least one surface of the corresponding vane extending from the inner peripheral edge to the outer peripheral direction to form a slightly concave ring shape, and the depth of the exhaust slit 11 may be 0 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

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

Description

无气孔轮胎活络模花纹块、 活络模具及其清洗方法
技术领域
本发明涉及一种轮胎模具，尤其涉及一种应用于轮胎活络模具领域的无气孔轮胎活 络模花纹块、 活络模具及其清洗方法。 背景技术
现有轮胎硫化过程中， 为了使模具型腔内的空气得以释放出来， 从而使橡胶能够均 匀地分布于模具中， 现有的轮胎模具均在模具型腔上开设有多个排气孔。 通常是采用钻 孔加工来形成所需的排气孔， 由于钻孔工序完成后还需要对孔端的毛剌进行修整， 增加 了模具制造工序， 提高了模具的制造成本； 另一方面， 在硫化过程中， 由于胎面区域的 排气是通过圆形气孔来排出的， 这些气孔通常位于模具内胎顶面， 且贯通穿设至模具外 表面， 在高压和高热的情况下， 未硫化的生胶会被挤压至模具胎顶腔外； 当空气从模具 里排出后， 橡胶被挤进钻设的排气孔内形成胶毛， 这些胶毛一部分可能会断在模具排气 孔内， 会妨碍型腔内空气的排出， 进而导致橡胶不能完全充满整个模具型腔。 为了避免 此种情况， 需要将轮胎模具从生产线卸下以进行清洗。 一般的清洗作业是使用钻头将每 个气孔里的橡胶钻出， 非常耗时， 影响生产效率； 大部分胶毛随着脱模而立于轮胎上， 为去除胶毛， 而不得不设专人及相应设备进行修剪， 不但影响轮胎的外观质量， 而且浪 费了胶料， 增加了生产成本。
为了克服上述缺陷， 出现了轮胎活络模具的无气孔技术， 如美国专利
US20070009623, 其是利用大量的相对较薄的环形板并排在一起安装在两个相对的半模 或活络模外罩内， 层板的以免一面或两面形成间隙。 轮胎硫化时， 气体从间隙中排出， 以保证所硫化出来的轮胎表面光滑。 但是， 由于 US20070009623的模具结构没有周向排 气槽， 其排气是通过径向排气槽排到花纹块的背面， 距离很长， 排气效果很差， 容易堵 塞， 而且一旦堵塞后， 由于距离太长而导致不易清洗， 且花纹块背面与滑块配合， 配合 面需加工诸多的排气槽， 通过它再将空气引出， 增加了加工成本。
而且， 轮胎花纹种类繁多， 受节距、 钢片镶制等专业要求方面的限制， 使得横向分 割的无气孔结构的模具大多都无法拆卸， 而上述美国专利 US20070009623的模具结构又 是四周开通， 无法封堵， 因此一旦堵塞， 如果拆卸不开， 便无法清洗。 综上所述， 现有的无气孔技术硫化出的轮胎虽然外表美观且节省胶料， 但始终存在 重大技术难题阻碍着无气孔技术的推广与普及， 即无气孔模具的排气效果差及清洗难的 问题。 几乎所有的无气孔模具都存在着清洗过程复杂、 成本高， 且大都无法清洗彻底而 直接影响模具再次硫化的质量及周期。 发明内容
本发明解决的问题是， 提供一种无气孔轮胎活络模具花纹块、 活络模具及其清洗方 法， 用于改善或克服现有无气孔模具的一项或多项缺陷。
本发明的技术解决方案包括：
一种无气孔轮胎活络模花纹块， 用于组成轮胎活络模， 所述花纹块包括多个上下叠 装的花纹片， 所述花纹块具有连通各花纹片内周和花纹块端面的排气通道， 所述排气通 道包括轴向设置于所述花纹块并连通各花纹片且与花纹块端面相连通的轴向排气孔， 所 述排气通道在模具清洗时作为清洗通道， 该排气通道的轴向排气孔作为清洗介质入口。
本发明还提出一种无气孔轮胎活络模具， 所述模具包括多个如上所述的无气孔轮胎 活络模花纹块， 所述排气通道连通模具内腔和模具外部， 所述排气通道的轴向排气孔轴 向设置于所述花纹块并连通各花纹片且与模具外部相连通， 所述排气通道在模具清洗时 作为清洗通道。
依据上述结构， 本发明还提出一种前述无气孔轮胎活络模具的清洗方法， 所述模具 是利用其花纹块内的排气通道作为清洗通道， 该排气通道的轴向排气孔作为清洗介质入 Π。
本发明的特点和优点是： 本发明的无气孔模具硫化时， 在胶囊内压的作用下， 模具 与胎面之间的气体通过模具的排气缝隙进入花纹片与花纹片之间的周向排气槽， 然后经 过在周向排气槽内汇集后进入径向排气槽， 再通过径向排气槽进入轴向排气孔， 从而将 气体排到模具外部。
与现有技术相比， 本发明的模具有周向排气槽， 其排气距离短， 效果好， 不易堵塞， 且清洗便利， 由于周向排气槽与端面的轴向排气孔贯通， 直接与外部连通， 因此配合面 无需再次加工排气槽。
本发明的无气孔模具在清洗时， 是先将模具端面的轴向排气孔封堵， 将模具内腔形 成一个近似密闭的容器， 再通过端面上其中一个清洗孔往模具内腔中注入一种有机溶 液， 在一定压力的作用下， 使有机溶液通过排气缝隙排出， 排出的过程就是对排气缝隙 的清洗过程。 此种清洗方法相比其他方法来说， 胶垢去除更彻底、 有效， 操作简单且清 洗成本较低。 因此， 本发明无论在加工成本还是在清洗成本方面都取得了重大突破。 附图说明
图 1是本发明无气孔轮胎活络模花纹块的一具体实施例的周向断面示意图； 图 2是图 1中的 I处局部放大图。
图 3是图 1的 A向视图。
图 4是图 3的 B-B向的剖视图。
图 5是本发明无气孔轮胎活络模花纹块的一花纹片的结构示意图。
图 6 是利用本发明的前一实施例的花纹块组装形成的无气孔轮胎活络模的结构示 意图。
图 7 是以某一花纹片为例显示了前一实施例中所述模具的排气过程示意图， 反过 程即为清洗过程。 具体实施方式
本发明首先提出一种无气孔轮胎活络模花纹块， 用于组成轮胎活络模， 其中， 所 述花纹块包括多个上下叠装的花纹片，所述花纹块具有连通各花纹片内周和花纹块端面 的排气通道， 所述排气通道包括轴向设置于所述花纹块的轴向排气孔， 所述轴向排气孔 连通各花纹片且与花纹块端面相连通。 利用此种结构的花纹块形成活络模后， 该无气孔 模具硫化时， 在胶囊内压的作用下， 模具与胎面之间的气体可通过模具的排气缝隙进入 花纹片与花纹片之间的周向排气槽， 然后经过在周向排气槽内汇集后进入径向排气槽， 再通过径向排气槽进入轴向排气孔， 从而将气体排到模具外部。
利用上述花纹块形成活络模后， 利用该无气孔模具硫化时， 在胶囊内压的作用下， 模具与胎面之间的气体可通过模具的排气缝隙进入花纹片与花纹片之间的周向排气槽， 然后经过在周向排气槽内汇集后进入径向排气槽， 再通过径向排气槽进入轴向排气孔， 从而将气体排到模具外部。
本发明还提出一种无气孔轮胎活络模具， 所述模具包括多个以上所述结构的花纹 块， 所述排气通道连通模具内腔和模具外部， 所述排气通道的轴向排气孔轴向设置于所 述花纹块并连通各花纹片且与模具外部相连通，所述排气通道在模具清洗时作为清洗通 道。 综上所述， 由于该无气孔轮胎活络模具具有上述结构， 因此， 所述模具能够利用 其花纹块内的排气通道作为清洗通道， 且该排气通道的轴向排气孔作为清洗介质入口， 所述清洗介质可为液体或气体清洗介质。
下面配合附图及具体实施例对本发明的无气孔轮胎活络模花纹块、 活络模具及其 清洗方法的具体实施方式作进一步的详细说明。
如图 1、 图 2所示， 其为本发明无气孔轮胎活络模花纹块的一具体实施例的结构示 意图， 多个花纹块沿圆周方向组合后形成活络模， 其中， 该花纹块 100是由多个花纹片 1上下叠装形成， 各花纹片 1的内径并不完全相同， 从而使得组合成的花纹块 100的内 周面与轮胎形状一致，且形成有与轮胎花纹对应的模具花纹，结合图 5所示，花纹块 100 具有连通各花纹片 1内周面 11和花纹块端面 12的排气通道 20， 所述排气通道 20包括 排气缝隙 21、 周向排气槽 22、 径向排气槽 23以及轴向设置于所述花纹块的轴向排气孔 27， 所述排气缝隙 21位于相邻的两个花纹片 1间， 并与花纹块 100内周面相通， 其具 有的深度较佳是使得硫化过程中模具腔 200 (如图 6所示） 内的空气能够排出而橡胶不 会流出，所述周向排气槽沿周向延伸形成于相邻的两个花纹片间并位于所述排气缝隙的 外侧， 所述径向排气槽连通该周向排气槽与所述轴向排气孔， 所述轴向排气孔 27连通 各花纹片 1的径向排气槽 23且与花纹块 100的端面 12相连通， 从而将模具内腔中的空 气排出。 需要说明的是， 本实施例中的排气通道仅是为了便于理解而举例说明的， 不能 理解为对本发明的限制， 亦即该排气通道还可采用其它形式和结构， 例如， 该径向排气 槽 23可以根据需要选择设置或不设置， 例如， 在排气缝隙和周向排气槽设置范围较宽 的情况下， 该轴向排气孔可直接与该周向排气槽连接。
如图 3、 图 4所示， 各花纹片 1上形成有两个以上的紧固螺钉孔 14， 以便于叠装 组合后紧固螺钉 31能够穿设固定； 同时， 为了保证周向定位， 各花纹片 1上沿轴向开 设有定位销孔 15， 以便穿插定位销，利用紧固螺钉 31和定位销 32将各花纹片 1按顺序 上下叠合形成花纹块。 本实施例是设有四个紧固螺钉孔 14和四个定位销孔 15， 且各紧 固螺钉孔的圆心位于相对外侧的一同心圆上， 各定位销孔 15 的圆心位于相对内侧的一 同心圆上， 但不限于此， 根据需要， 紧固螺钉孔 14、 定位销孔 15的形式、 个数、 位置 可以根据需要变化调整， 此处不再一一赘述。
再结合图 3所示， 本实施例的花纹块 100设有三个轴向排气孔， 包括一位于花纹 块中部的中央轴向排气孔 26以及两个分别靠近该花纹块 100两侧断面的侧部轴向排气 孔 27，各轴向排气孔两端可采用丝堵进行可拆装式的封堵。对于无气孔模具的侧部轴向 排气孔 27， 此孔在模具硫化过程中处于开口状态， 用于排气， 而在模具清洗过程中为封 口状态。无气孔模具的中央轴向排气孔 26， 此孔在硫化过程中打开而呈排气状态， 在清 洗过程中则由此孔注入有机溶液完成清洗。 需要说明的是， 本领域的技术人员根据实际 需要， 可以对该轴向排气孔的形式、 个数及位置进行适当的调整， 此处不再一一赘述。
图 6 是利用本发明的前一实施例的花纹块组装形成的无气孔轮胎活络模的结构示 意图； 其中序号 100指示为无气孔模具 （花纹块） 。 结合如图 6所示， 上胎侧板 201与 上盖 202组成上胎侧部件， 下胎侧板 203与底座 204组成下胎侧部件， 花纹块 100与滑 块 205组成花纹部件， 导环 206、 安装环 207和保温套 208组成模套部件； 模套部件通 过安装环 207与硫化机组连接， 对整个模具施加作用力， 在力的作用下实现模具自由开 合的活络动作。
利用上述花纹块形成的无气孔活络模具， 可以利用各花纹块的排气通道进行反向 的清洗。 无气孔模具清洗时， 先将模具靠近两侧断面的侧部轴向排气孔 27封堵， 将模 具内腔 200形成一个近似密闭的容器，再通过靠近断面上其中一个侧部清洗孔 27 (或中 央排气孔 26 )往模具内腔 200中注入清洗介质（例如有机溶液） ， 在一定压力 （较佳为 5 50Mpa) 的作用下， 使清洗介质通过排气缝隙 11排出， 请结合图 7所示， 排出的过 程就是对排气缝隙 11的清洗过程。 此种清洗方法相比其他方法来说， 胶垢去除更彻底、 有效， 操作简单且清洗成本较低。
为了提高硫化过程空气排出的流畅性， 本实施例中， 如图 5、 图 7所示， 花纹片 1 上的周向排气槽 22与径向排气槽 23较佳呈平滑的流线形，且所述周向排气槽 22、径向 排气槽 23 以及轴向排气孔的连接或拐弯处呈平滑过渡结构， 从而使得清洗过程中清洗 介质能够被更顺畅地注入及通过。 需要说明的是， 相关流道的结构参数不限， 可根据具 体情况确定或调整。
本实施例中， 侧部轴向排气孔相对靠近花纹块的周向外缘， 而中央轴向排气孔相 对靠近所述花纹块周向内缘。 较佳地， 各轴向排气孔在周向上均匀排布， 以利达到更好 的排气及清洗效果。
优选地， 相邻花纹片 1间的排气缝隙 11是由对应花纹片的至少一表面由内周缘向 外周缘方向延伸的一定范围内切削而形成略凹的环形， 排气缝隙 11 的深度可以为 0. 005 0. 05 较佳为 0. 02~0. 035 其由内周缘向外周缘方向延伸的宽度较佳为 0. 5 5mm， 也可大于 5mm
本发明的一较佳实施例中， 所述周向排气槽的深度为 0. 5 3 宽度为 1 6 在需要时也可大于 6
以上所述， 仅是本发明的较佳实施例而已， 并非对本发明作任何形式上的限制。 虽 然本发明已以较佳实施例揭露如上， 然而并非用以限定本发明， 任何熟悉本专业的技术 人员在不脱离本发明技术方案范围内， 当可利用上述揭示的技术内容作出些许更动或修 饰为等同变化的等效实施例， 但凡是未脱离本发明技术方案的内容， 依据本发明的技术 实质对以上实施例所作的任何简单修改、 等同变化与修饰， 均仍属于本发明技术方案的 范围内。

Claims

权利要求书
1. 一种无气孔轮胎活络模花纹块， 用于组成轮胎活络模， 其特征在于， 所述花纹 块包括多个上下叠装的花纹片，所述花纹块具有连通各花纹片内周和花纹块端面的排气 通道，所述排气通道包括轴向设置于所述花纹块并连通各花纹片且与花纹块端面相连通 的轴向排气孔， 所述排气通道在模具清洗时作为清洗通道， 该排气通道的轴向排气孔作 为清洗介质入口。
2. 如权利要求 1所述的无气孔轮胎活络模花纹块， 其特征在于， 所述排气通道还 包括排气缝隙、 周向排气槽、 径向排气槽， 所述排气缝隙位于相邻的两个花纹片间并与 花纹块内周面相通，其具有的深度使得硫化过程中模具腔内的空气能够排出而橡胶不会 流出，所述周向排气槽沿周向延伸形成于相邻的两个花纹片间并位于所述排气缝隙的外 侧， 所述径向排气槽连通该周向排气槽与所述轴向排气孔。
3. 如权利要求 2所述的无气孔轮胎活络模花纹块， 其特征在于， 所述排气缝隙是 由花纹片的至少一表面的内周缘向外切削一定宽度而形成环形，所述排气缝隙的深度为 0. 005—0. 05mm, 宽度为 0. 5~5mm或大于 5mm
4. 如权利要求 2所述的无气孔轮胎活络模花纹块， 其特征在于， 所述周向排气槽 的深度为 0. 5 3mm， 宽度为 1 6 或大于 6
5. 如权利要求 2所述的无气孔轮胎活络模花纹块， 其特征在于， 各花纹片上的周 向排气槽与径向排气槽呈流线形， 且所述周向排气槽、 径向排气槽以及轴向排气孔的连 接或拐弯处呈平滑过渡结构。
6. 如权利要求 1所述的无气孔轮胎活络模花纹块， 其特征在于， 每个花纹块包括 靠近侧部断面的侧部轴向排气孔以及中央轴向排气孔。
7. 如权利要求 6所述的无气孔轮胎活络模花纹块， 其特征在于， 所述各轴向排气 孔在周向上均匀排布， 且所述侧部轴向排气孔相对靠近所述花纹块外缘， 所述中央轴向 排气孔相对靠近所述花纹块中央。
8. 如权利要求 1所述的无气孔轮胎活络模花纹块， 其特征在于， 各花纹片上形成 有两个以上的紧固螺钉孔， 叠装组合后紧固螺钉能够穿设固定； 各花纹片上沿轴向开设 有定位销孔， 以穿插定位销； 利用紧固螺钉和定位销将各花纹片按顺序上下叠合形成花 纹块。
9. 如权利要求 8所述的无气孔轮胎活络模花纹块， 其特征在于， 每一花纹片上的 各紧固螺钉孔的圆心位于相对外侧的一同心圆上，各定位销孔的圆心位于相对内侧的一 同心圆上。
10.一种无气孔轮胎活络模具， 其特征在于， 所述模具包括多个权利要求 1〜9任一 项所述的花纹块， 所述排气通道连通模具内腔和模具外部， 所述排气通道的轴向排气孔 轴向设置于所述花纹块并连通各花纹片且与模具外部相连通，所述排气通道在模具清洗 时作为清洗通道。
11.一种如权利要求 10所述的无气孔轮胎活络模具的清洗方法， 其特征在于， 所述 模具是利用其花纹块内的排气通道作为清洗通道，该排气通道的轴向排气孔作为清洗介 质入口。
12.如权利要求 11所述的无气孔轮胎活络模具的清洗方法， 其特征在于， 硫化过程 中， 所述轴向排气孔在模具处于开口排气状态； 模具清洗过程中， 至少其中一轴向排气 孔作为清洗介质注入口， 在清洗过程中由此孔注入清洗溶液完成清洗， 其它轴向排气孔 为封闭状态。
13.如权利要求 11所述的无气孔轮胎活络模具的清洗方法， 其特征在于， 所述清洗 介质为液体或气体清洗介质。
14.如权利要求 13所述的无气孔轮胎活络模具的清洗方法， 其特征在于， 所述液体 清洗介质为有机溶液， 其清洗压力为 5〜50Mpa。
PCT/CN2012/072718 2012-03-21 2012-03-21 无气孔轮胎活络模花纹块、活络模具及其清洗方法 Ceased WO2013139007A1 (zh)

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