WO2016131309A1 - 一种无气孔轮胎活络模具及其花纹块 - Google Patents

一种无气孔轮胎活络模具及其花纹块 Download PDF

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Publication number
WO2016131309A1
WO2016131309A1 PCT/CN2015/094201 CN2015094201W WO2016131309A1 WO 2016131309 A1 WO2016131309 A1 WO 2016131309A1 CN 2015094201 W CN2015094201 W CN 2015094201W WO 2016131309 A1 WO2016131309 A1 WO 2016131309A1
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WIPO (PCT)
Prior art keywords
annular structure
block
exhaust
active mold
tire active
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PCT/CN2015/094201
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English (en)
French (fr)
Inventor
张伟
张任
马海波
王万里
郭建智
李超
Original Assignee
山东豪迈机械科技股份有限公司
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Publication of WO2016131309A1 publication Critical patent/WO2016131309A1/zh

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    • 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
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • 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
    • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould

Definitions

  • the invention relates to a tire mold, in particular to a non-porous tire active mold and a block thereof.
  • 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 burrs of the hole ends need to be trimmed after the drilling process is completed, the mold manufacturing process is increased, and the manufacturing cost of the mold is increased.
  • the general cleaning operation is to use the drill bit to each
  • the rubber in the air hole is very time-consuming and affects the production efficiency.
  • most of the rubber is placed on the tire with the mold release.
  • the person In order to remove the rubber, the person has to be equipped with the corresponding equipment to trim. It affects the appearance quality of the tire and wastes the rubber compound, which increases the production cost.
  • the present invention provides a block of a non-porous tire active mold, wherein the block of the non-porous tire active mold comprises a plurality of knives and a slat shell, and the plurality of the slabs are circumferentially Arranging and arranging an annular structure capable of accommodating a rubber blank for tire molding, the bezel housing being fitted outside the annular structure, the inside of the annular structure being provided with an exhaust passage, the exhaust passage communicating with the An inner side and an outer side of the annular structure, the exhaust passage including between the two adjacently arranged fins and disposed along an axial direction of the annular structure to prevent the rubber blank from overflowing the annular structure An exhaust gap, the exhaust gap being disposed adjacent to an inner side of the annular structure.
  • the exhaust passage further comprises an axial exhaust groove, a radial exhaust groove and a circumferential exhaust groove, the axial exhaust groove being located between each two adjacently arranged segments, and the axial exhaust groove is along an axis of the annular structure Provided in parallel with the exhaust plenum, the radial venting groove being located between the two adjacently arranged slabs and disposed along a radial direction of the annular structure, the circumferential exhaust a groove is disposed around an outer circumferential surface of the annular structure, and the circumferential exhaust groove communicates with an outer side of the block, the exhaust gap, the axial exhaust groove, and the radial exhaust The groove and the circumferential exhaust groove are sequentially connected to constitute the exhaust passage.
  • each of the fins is formed by a plurality of sheets in the axial direction of the annular structure.
  • the present invention also provides a block of a non-porous tire active mold, wherein the block of the non-porous tire active mold comprises a plurality of blobs and a frustule outer casing, and the plurality of the wraps are circumferentially assembled and assembled Forming an annular structure capable of accommodating a rubber blank for tire molding, the bezel outer casing being fitted outside the annular structure, the inside of the annular structure being provided with an exhaust passage communicating with the inner side of the annular structure With the outside.
  • the exhaust passage includes a sequentially communicating exhaust gap, an axial exhaust groove, a radial exhaust groove, and a circumferential exhaust groove
  • the row An air gap is located between each two adjacently arranged segments and disposed along an axial direction of the annular structure, and an exhaust gap prevents the rubber blank from overflowing the annular structure
  • the axial exhaust a slot is located between each of the two adjacently arranged segments and along the annular structure
  • the axial venting groove is parallel to the venting gap
  • the radial venting groove being located between each two adjacently arranged slabs and along the annular structure Radially disposed
  • the circumferential exhaust groove is disposed around an outer peripheral surface of the annular structure, and the circumferential exhaust groove communicates with an outer side of the block.
  • the present invention also provides a non-porous tire active mold, wherein the non-porous tire active mold comprises a block of a non-porous tire active mold as described above, the annular structure of the block of the non-porous tire active mold The inner cavity of the non-porous tire active mold is formed inside, and the exhaust passage on the annular structure communicates with the inner cavity and the outer portion of the non-porous tire active mold.
  • the present invention consists of arranging a block of a non-porous tire active mold into a plurality of knives and a slat shell formed by arranging an annular structure, and providing an exhaust passage between each two adjacently arranged slabs
  • the exhaust passage includes an exhaust gap which can prevent the rubber from overflowing, so that the block has good exhaust performance, and the effect of only exhausting without running the glue is achieved, so that the tread of the finally formed tire has no rubber.
  • the appearance quality of the tire is ensured, unnecessary waste of the rubber material is avoided, and the production cost is guaranteed.
  • the non-porous tire active mold and the block provided by the invention wherein the size of the pattern piece is small, the mechanical processing is simple, and the mass production is convenient, and the pattern piece of the invention has the characteristics of being replaceable separately, the pattern of the same specification.
  • the strips can be replaced according to the pattern pitch without affecting the use effect of the non-porous tire active mold and its blocks, which can greatly extend the service life of the non-porous tire active mold and its blocks, thereby reducing the manufacturing cost of the tire.
  • FIG. 1 is a schematic structural view of a block of a non-porous tire active mold provided by the present invention
  • Figure 2 is a cross-sectional view of the block of the block of the non-porous tire active mold provided by the present invention taken along line A-A of Figure 1;
  • FIG. 3 is a schematic structural view of a block of a block of a non-porous tire active mold provided by the present invention.
  • FIG. 4 is a schematic radial cross-sectional view showing a partial block of the non-porous tire active mold provided by the present invention.
  • Figure 5 is an enlarged schematic view showing the structure of B in Figure 4.
  • Figure 6 is a schematic view showing the parting surface of the block of the non-porous tire active mold provided by the present invention.
  • FIG. 7 is another schematic structural view of a tensioning block of a block of a non-porous tire active mold provided by the present invention.
  • FIG. 8 is a schematic structural view of a non-porous tire active mold provided by the present invention.
  • FIG. 9 is a schematic view showing an exhaust process of a non-porous tire active mold and a block thereof provided by the present invention.
  • Figure 10 is a schematic overall cross-sectional view of the block of the non-porous tire active mold provided by the present invention.
  • the present invention provides a block of a non-porous tire active mold, wherein the block of the non-aperture tire active mold comprises a plurality of treads 1 and a veneer casing 2, and a plurality of treads 1 is arranged in a circumferential direction to form an annular structure capable of accommodating a rubber blank for tire molding (ie, a green tire), that is, each of the fins 1 has a radial cross section which is tapered from the outer side of the annular structure to the inner side of the annular structure, and The annular structure is in direct contact with the rubber blank during the molding of the tire, and the blade outer casing 2 is fitted on the outer side of the annular structure for maintaining the shape of the annular structure composed of the plurality of slats 1, wherein as shown in FIG.
  • the arc-shaped housings that can be split are assembled, and the flaps 1 are loaded into the interior of the curved casing from the side of each curved casing during installation, so that the smooth installation of the respective patterns 1 to the pattern can be ensured.
  • the plurality of curved casings filled with the pattern 1 are assembled and spliced into a whole block, and a plurality of curved shells can be adopted.
  • Direct installation The shape of the block is maintained in the inner cavity of the mold through the inner wall of the inner cavity, or the plurality of curved outer casings may be connected by a detachable connecting member and then installed in the inner cavity of the mold.
  • An exhaust passage 11 is disposed inside the annular structure, wherein the exhaust passage 11 may be disposed inside each of the vanes 1, or the exhaust passage 11 may be disposed between each two adjacently arranged vanes 1
  • the exhaust passage 11 communicates with the inner side and the outer side of the annular structure.
  • the exhaust passage 11 includes a vane located at every two adjacent rows.
  • the air in the annular structure is discharged during molding and effectively prevents the rubber blank from overflowing from the inside of the annular space.
  • the present invention provides a block of a non-porous tire active mold, wherein the exhaust passage 11 further includes an axial exhaust groove 112, a radial exhaust groove 113 and a circumferential row.
  • the air groove 114, the axial exhaust groove 112 is located between each two adjacently arranged segments 1, and the axial exhaust groove 112 is disposed along the axial direction of the annular structure and parallel to the exhaust gap 111, and the radial row
  • the air groove 113 is located between each two adjacently arranged segments 1 and disposed along the radial direction of the annular structure, and the circumferential exhaust groove 114 is circumferentially disposed on the outer circumferential surface of the annular structure, and the circumferential exhaust groove 114 is The outer side of the block communicates, and the exhaust gap 111, the axial exhaust groove 112, the radial exhaust groove 113, and the circumferential exhaust groove 114 are sequentially connected to constitute the exhaust passage 11.
  • the axial exhaust groove 112 and the radial exhaust groove 113 are all recessed in the side wall of each of the vanes 1, wherein an axial exhaust groove 112 may be provided on one side of each of the vanes 1 and
  • the radial exhaust groove 113 when the plurality of the segments 1 are arranged to form an annular structure, each of the segments 1 is provided with one side of the axial exhaust groove 112 and the radial exhaust groove 113 and adjacently arranged
  • the blade 1 is not provided with one side of the axial exhaust groove 112 and the radial exhaust groove 113, and is formed to form a closed channel having a semicircular cross section, or is provided on both sides of each of the segments 1
  • the axial exhaust groove 112 and the radial exhaust groove 113 when the plurality of the segments 1 are arranged to be assembled into a ring structure, the axial exhaust groove 112 and the radial exhaust groove on both side walls of each of the blocks 1 113 is respectively engaged with the axial exhaust groove 112 and the radial
  • the circumferential exhaust groove 114 is a passage recessed on the outer peripheral surface of each of the segments 1, wherein when the plurality of the segments 1 are arranged to form an annular structure, the circumferential exhaust grooves 114 on each of the plurality of grooves 1 are mutually In communication, a circular recessed passage is formed on the outer peripheral surface of the annular structure.
  • the present invention provides a block of a non-porous tire active mold, wherein the width of the exhaust gap 111 is 0.005 mm to 0.1 mm.
  • the width of the exhaust gap 111 is within this range, it is possible to ensure that the gas inside the annular structure is discharged while preventing the rubber blank from overflowing.
  • the present invention provides a block of a non-porous tire active mold, wherein the width of the exhaust gap 111 is 0.02 mm to 0.06 mm.
  • the width of the exhaust gap 111 is within this range, it is possible to ensure the inside of the annular structure While the gas is discharged and prevents the rubber blank from overflowing, the speed of gas discharge inside the annular structure can be ensured to the utmost extent.
  • One skilled in the art can process the pattern sheet 1 having different widths and different widths of the exhaust gap 111 according to different rubber compound formulations of different manufacturers.
  • the present invention provides a block of a non-porous tire active mold, wherein each of the patterns 1 is formed by a plurality of sheets 14 in the axial direction of the annular structure.
  • the panel 1 includes upper, lower, middle and lower three-layer sheets 14.
  • the pattern 1 may also include two layers of sheets 14, four layers of sheets 14, five layers of sheets 14, and the like, and those skilled in the art may set different according to different tire manufacturer requirements and different pattern forms.
  • the slabs 1 of the plurality of sheets 14 and the slabs 14 of the slabs 14 may be integrally formed or welded together, or the slabs 14 may be detachably connected by the connecting members and constitute the respective slats 1.
  • the number of layers of the segment 1 is determined according to different patterns of various patterns, including the curvature of the top curve, and the difference in the total width of the pattern and the processing property of the sheet 1. The smaller the sheet 14 of the sheet 1 is, the better the processability is, and the cost is also reduced.
  • the present invention provides a block of a non-porous tire active mold, wherein the parting surface between each two adjacently arranged pieces 1 is a curved surface, a plane or a folded surface.
  • the parting surface of the curved surface and the folded surface is realized by setting a plurality of sheets 14 of each of the plurality of sheets 1 to have a certain angle.
  • the present invention provides a block of a non-aperture tire active mold, wherein the inner peripheral surface of the annular structure is provided with a plurality of circumferential ribs 12 arranged in a ring shape and a plurality of The steel sheets 13 are arranged at intervals, and each of the patterns 1 is provided with a circumferential rib 12 and a steel sheet (or radial rib) 13.
  • the circumferential ribs 12 on each of the panels 1 are continuously arranged to form an annular shape to form an annular recess on the tread of the tire.
  • the steel sheets (or radial ribs) 13 on each of the crests 1 are arranged along the axial direction of the crest 1 in which the parting surface between each two adjacently arranged crests 1 is curved or When folding the surface, that is, the plurality of sheets 14 of each of the patterns 1 are set to have a certain angle, wherein the shape of the parting surface can be based on different pitches of the various patterns, and the pattern sheet 1 is combined.
  • the variation of the circumferential ribs 12 and the steel sheets (or radial ribs) 13 and the like are determined, so that the arrangement and the docking of the circumferential ribs 12 and the steel sheets (or radial ribs) 13 can be facilitated to avoid the circumferential ribs 12 And various problems that occur when the steel sheet (or radial ribs) 13 are docked.
  • the present invention provides a block of a non-porous tire active mold, wherein the annular structure and the blade shell 2 are connected by a tensioning block 3 and a tension bolt 4, and the tensioning block 3 and the ring structure are In engagement, the tension bolt 4 is passed through the annular structure from the outside of the annular structure and is screwed to the tensioning block 3.
  • the tensioning block 3 is typically disposed between two adjacent panels 14 of each of the panels 1. By providing the tensioning block 3 and the tensioning bolt 4, the respective sheets 14 of each of the panels 1 can be effectively fixed together with the panel outer casing 2, thereby forming a block.
  • the tensioning block 3 is a block having a trapezoidal cross section.
  • the present invention provides a block of a non-aperture tire active mold, wherein the tension block 3 can also be a block having a T-shaped cross section, which is the same as a block having a trapezoidal cross section. Both of them can function as the fixed pattern piece 1 and the pattern piece outer casing 2. It should be noted that in the present invention, there are many ways of fitting the pattern sheet 1 and the pattern sheet outer casing 2, and those skilled in the art can determine a more suitable connection manner according to the actual division of the pattern sheet 1.
  • the present invention provides a block of a non-porous tire active mold, wherein the material of the pattern 1 is steel, wrought aluminum or cast aluminum, and the material of the pattern shell 2 is steel or aluminum.
  • the present invention provides a non-porous tire active mold, wherein the non-porous tire active mold comprises the block of the non-porous tire active mold as described above, the upper side plate 5 and the lower side plate 6, without The inner side of the annular structure of the block of the stomatal tire active mold together with the upper side plate 5 and the lower side plate 6 form a cavity of the non-porous tire active mold, and the exhaust passage 11 on the annular structure communicates with the inner cavity and the non-porous tire active mold The outside.
  • the non-porous tire active mold comprises the block of the non-porous tire active mold as described above, the upper side plate 5 and the lower side plate 6, without
  • the inner side of the annular structure of the block of the stomatal tire active mold together with the upper side plate 5 and the lower side plate 6 form a cavity of the non-porous tire active mold, and the exhaust passage 11 on the annular structure communicates with the inner cavity and the non-porous tire active mold The outside.
  • the present invention provides a block of another non-porous tire active mold, and the specific structure thereof can also be referred to FIG. 1 to FIG. 7 and FIG. 10, wherein the block of the non-aperture tire active mold comprises a plurality of the pattern 1 and the pattern piece.
  • the outer casing 2, the plurality of treads 1 are arranged in the circumferential direction and form an annular structure capable of accommodating the rubber blank for tire molding (i.e., the green tire), that is, each of the vanes 1 has a radial cross section from the outer side of the annular structure to the annular structure.
  • the inner side is tapered in a fan shape, and the annular structure is in direct contact with the rubber blank during the molding of the tire, and the pattern outer shell 2 is fitted outside the annular structure for maintaining the shape of the annular structure composed of the plurality of patterns 1.
  • An exhaust passage 11 is disposed inside the annular structure, wherein the exhaust passage 11 may be disposed inside each of the vanes 1, or the exhaust passage 11 may be disposed between each two adjacently arranged vanes 1
  • the exhaust passage 11 communicates with the inside and the outside of the annular structure.
  • the present invention provides another non-porous tire active mold block, wherein the exhaust passage includes a sequentially communicating exhaust gap 111, an axial exhaust groove 112, a radial exhaust groove 113, and a circumferential exhaust groove 114, the exhaust gap 111 is located between each two adjacently arranged segments 1 and disposed along the axial direction of the annular structure, and the exhaust gap 111 can prevent the rubber blank from overflowing the annular structure, the axial row
  • the air groove 112 is located between each two adjacently arranged segments 1 and disposed along the axial direction of the annular structure, and the axial exhaust groove 112 is parallel to the exhaust gap 111, and the radial exhaust groove 113 is located at every two Arranged between the adjacently arranged crests 1 and in the radial direction of the annular structure, the circumferential exhaust grooves 114 are circumferentially disposed on the outer peripheral surface of the annular structure, and the circumferential exhaust grooves 114 communicate with the outer sides of the blocks 1.
  • the exhaust passage 11 When the exhaust passage 11 is provided between every two adjacently arranged segments 1, the exhaust passage 11 is provided between each two adjacently arranged segments 1 and disposed along the axial direction of the annular structure
  • the exhaust gap 111 capable of preventing the rubber blank from overflowing the annular structure, the exhaust gap 111 is disposed near the inner side of the annular structure and communicates with the inside of the annular structure, and the exhaust gap 111 can be at the wheel
  • the tire is shaped to expel air within the annular structure and effectively prevent the rubber blank from escaping outwardly from the interior of the annular space.
  • the axial exhaust groove 112 and the radial exhaust groove 113 are all recessed in the side wall of each of the vanes 1, wherein an axial exhaust groove 112 may be provided on one side of each of the vanes 1 and
  • the radial exhaust groove 113 when the plurality of the segments 1 are arranged to form an annular structure, each of the segments 1 is provided with one side of the axial exhaust groove 112 and the radial exhaust groove 113 and adjacently arranged
  • the blade 1 is not provided with one side of the axial exhaust groove 112 and the radial exhaust groove 113, and is formed to form a closed channel having a semicircular cross section, or is provided on both sides of each of the segments 1
  • the axial exhaust groove 112 and the radial exhaust groove 113 when the plurality of the segments 1 are arranged to be assembled into a ring structure, the axial exhaust groove 112 and the radial exhaust groove on both side walls of each of the blocks 1 113 is respectively engaged with the axial exhaust groove 112 and the radial
  • the circumferential exhaust groove 114 is a passage recessed on the outer peripheral surface of each of the segments 1, wherein when the plurality of the segments 1 are arranged to form an annular structure, the circumferential exhaust grooves 114 on each of the plurality of grooves 1 are mutually In communication, a circular recessed passage is formed on the outer peripheral surface of the annular structure.
  • the other structure of the block of the other non-porous tire active mold provided by the present invention is substantially the same as that of the block of the aforementioned non-porous tire active mold, and will not be described again.
  • the present invention also provides another non-porous tire active mold, the specific structure of which can also refer to FIG. 8, wherein the non-porous tire active mold comprises the block of the other non-porous tire active mold as described above, and the upper side
  • the inner cavity and the non-porous tire are connected to the outside of the mold.
  • the non-porous tire active mold and its block provided by the present invention in use, gas enters the axial exhaust groove 112 through the exhaust gap 111 from the inside of the annular structure, and passes through the radial exhaust groove 113.
  • the circumferential exhaust groove 114 since the blade 1 and the blade outer casing 2 are not sealed, it can be considered that the circumferential exhaust groove 114 communicates with the outside of the block or the mold, thereby inserting the block or the mold. The gas is discharged.
  • the present invention consists of arranging a block of a non-porous tire active mold into a plurality of knives and a slat shell formed by arranging an annular structure, and providing an exhaust passage between each two adjacently arranged slabs
  • the exhaust passage includes an exhaust gap which can prevent the rubber from overflowing, so that the block has good exhaust performance, and the effect of only exhausting without running the glue is achieved, so that the tread of the finally formed tire has no rubber.
  • the appearance quality of the tire is ensured, unnecessary waste of the rubber material is avoided, and the production cost is guaranteed.
  • the non-porous tire active mold and the block thereof provided by the invention wherein the small size of the pattern piece is simple, the mechanical processing is simple, and the mass production is convenient, and the flower piece of the invention has the characteristics of being replaceable separately, the flower of the same specification
  • the strips can be replaced according to the pattern pitch without affecting the use effect of the non-porous tire active mold and its blocks, which can greatly extend the service life of the non-porous tire active mold and its blocks, thereby reducing the manufacturing cost of the tire. .

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  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
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  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

本发明提供了一种无气孔轮胎活络模具及其花纹块。所述花纹块包括多个花纹片和花纹片外壳，多个花纹片沿周向排列组装并形成能容纳轮胎成型用橡胶坯料的环形结构，花纹片外壳套装在环形结构外侧，环形结构内部设有排气通道，排气通道连通环形结构的内侧与外侧，排气通道包括位于每两个相邻排布的花纹片之间且沿环形结构的轴向设置的能阻止橡胶坯料溢出环形结构的排气间隙，排气间隙靠近环形结构的内侧设置。本发明提供的模具包括如上所述的花纹块。本发明提供的无气孔轮胎活络模具及其花纹块具有良好的排气性能，达到只排气而不跑胶的效果，使最终成型的轮胎的胎面无胶毛，保证了轮胎的外观质量，避免了胶料不必要的浪费，保证了生产成本。

Description

一种无气孔轮胎活络模具及其花纹块 技术领域
本发明涉及一种轮胎模具，特别涉及一种无气孔轮胎活络模具及其花纹块。
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刺进行修整，增加了模具制造工序，提高了模具的制造成本。另外，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；与此同时，还有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。
发明内容
本发明的目的是提供一种便于制造及清理、制成轮胎的胎面无胶毛的无气孔轮胎活络模具及其花纹块。
为达到上述目的，本发明提供了一种无气孔轮胎活络模具的花纹块，其中，所述无气孔轮胎活络模具的花纹块包括多个花纹片和花纹片外壳，多个所述花纹片沿周向排列组装并形成能容纳轮胎成型用橡胶坯料的环形结构，所述花纹片外壳套装在所述环形结构的外侧，所述环形结构的内部设有排气通道，所述排气通道连通所述环形结构的内侧与外侧，所述排气通道包括位于每两个相邻排布的所述花纹片之间且沿所述环形结构的轴向设置的能阻止所述橡胶坯料溢出所述环形结构的排气间隙，所述排气间隙靠近所述环形结构的内侧设置。
如上所述的无气孔轮胎活络模具的花纹块，其中，所述排气通道还包括轴向排气槽、 径向排气槽和周向排气槽，所述轴向排气槽位于每两个相邻排布的所述花纹片之间，且所述轴向排气槽沿所述环形结构的轴向设置并与所述排气间隙平行，所述径向排气槽位于每两个相邻排布的所述花纹片之间并沿所述环形结构的径向设置，所述周向排气槽环绕设置在所述环形结构的外周面上，且所述周向排气槽与所述花纹块的外侧连通，所述排气间隙、所述轴向排气槽、所述径向排气槽、所述周向排气槽顺次连通构成所述排气通道。
如上所述的无气孔轮胎活络模具的花纹块，其中，所述排气间隙的宽度为0.005mm～0.1mm。
如上所述的无气孔轮胎活络模具的花纹块，其中，所述排气间隙的宽度为0.02mm～0.06mm。
如上所述的无气孔轮胎活络模具的花纹块，其中，沿所述环形结构的轴向，各所述花纹片均由多层片体组接而成。
如上所述的无气孔轮胎活络模具的花纹块，其中，每两个相邻排布的所述花纹片之间的分型面为曲面、平面或折面。
如上所述的无气孔轮胎活络模具的花纹块，其中，所述环形结构的内周面上设有多个呈环形排列设置的周向花筋和多个呈间隔排列设置的钢片，每个所述花纹片上均设有所述周向花筋与所述钢片。
如上所述的无气孔轮胎活络模具的花纹块，其中，所述环形结构与所述花纹片外壳通过拉紧块和拉紧螺栓连接，所述拉紧块与所述环形结构嵌接，所述拉紧螺栓由所述环形结构的外侧穿过所述环形结构并与所述拉紧块旋接。
如上所述的无气孔轮胎活络模具的花纹块，其中，所述花纹片的材质为钢、锻铝或铸铝，所述花纹片外壳的材质为钢或铝。
本发明还提供了一种无气孔轮胎活络模具的花纹块，其中，所述无气孔轮胎活络模具的花纹块包括多个花纹片和花纹片外壳，多个所述花纹片沿周向排列组装并形成能容纳轮胎成型用橡胶坯料的环形结构，所述花纹片外壳套装在所述环形结构的外侧，所述环形结构的内部设有排气通道，所述排气通道连通所述环形结构的内侧与外侧。
如上所述的无气孔轮胎活络模具的花纹块，其中，所述排气通道包括顺次连通的排气间隙、轴向排气槽、径向排气槽和周向排气槽，所述排气间隙位于每两个相邻排布的所述花纹片之间并沿所述环形结构的轴向设置，且排气间隙能阻止所述橡胶坯料溢出所述环形结构，所述轴向排气槽位于每两个相邻排布的所述花纹片之间并沿所述环形结构 的轴向设置，且所述轴向排气槽与所述排气间隙平行，所述径向排气槽位于每两个相邻排布的所述花纹片之间并沿所述环形结构的径向设置，所述周向排气槽环绕设置在所述环形结构的外周面上，且所述周向排气槽与所述花纹块的外侧连通。
本发明还提供了一种无气孔轮胎活络模具，其中，所述无气孔轮胎活络模具包括如上所述的无气孔轮胎活络模具的花纹块，所述无气孔轮胎活络模具的花纹块的环形结构的内侧形成所述无气孔轮胎活络模具的内腔，所述环形结构上的排气通道连通所述内腔与所述无气孔轮胎活络模具的外部。
与现有技术相比，本发明的优点如下：
1、本发明通过将无气孔轮胎活络模具的花纹块设为由排列形成环形结构的多个花纹片和花纹片外壳组成，并在每两个相邻排布的花纹片之间设置排气通道，同时排气通道包括有能阻止橡胶溢出的排气间隙，可以使花纹块具有良好的排气性能，达到只排气而不跑胶的效果，使最终成型的轮胎的胎面无胶毛，保证了轮胎的外观质量，避免了胶料不必要的浪费，保证了生产成本。
2、本发明提供的无气孔轮胎活络模具及其花纹块，其中花纹片的尺寸较小，机械加工简单，便于批量生产，并且，本发明的花纹片具有可单独置换的特点，同规格的花纹片之间可以根据花纹节距进行置换而不影响无气孔轮胎活络模具及其花纹块整体的使用效果，可以大大延长无气孔轮胎活络模具及其花纹块的使用寿命，从而降低轮胎的制造成本。
附图说明
以下附图仅旨在于对本发明做示意性说明和解释，并不限定本发明的范围。其中：
图1是本发明提供的无气孔轮胎活络模具的花纹块的结构示意图；
图2是本发明提供的无气孔轮胎活络模具的花纹块的花纹片沿图1中A-A的剖面示意图；
图3是本发明提供的无气孔轮胎活络模具的花纹块的花纹片的结构示意图；
图4是本发明提供的无气孔轮胎活络模具的部分花纹块的径向剖面示意图；
图5是图4中B处结构放大示意图；
图6是本发明提供的无气孔轮胎活络模具的花纹块的分型面示意图；
图7是本发明提供的无气孔轮胎活络模具的花纹块的拉紧块的另一结构示意图；
图8是本发明提供的无气孔轮胎活络模具的结构示意图；
图9是本发明提供的无气孔轮胎活络模具及其花纹块的排气过程示意图；
图10是本发明提供的无气孔轮胎活络模具的花纹块的整体径向剖面示意图。
附图标号说明：
1   花纹片
11  排气通道
111 排气间隙
112 轴向排气槽
113 径向排气槽
114 周向排气槽
12  周向花筋
13  钢片(或径向花筋)
14  片体
2   花纹片外壳
3   拉紧块
4   拉紧螺栓
5   上侧板
6   下侧板
具体实施方式
为了对本发明的技术方案、目的和效果有更清楚的理解，现结合附图说明本发明的具体实施方式。
如图1～图2所示，本发明提供了一种无气孔轮胎活络模具的花纹块，其中，无气孔轮胎活络模具的花纹块包括多个花纹片1和花纹片外壳2，多个花纹片1沿周向排列组装并形成能容纳轮胎成型用橡胶坯料(即胎坯)的环形结构，即每个花纹片1的径向截面均呈由环形结构外侧至环形结构内侧渐缩的扇形，且环形结构在轮胎成型时与橡胶坯料直接接触，花纹片外壳2套装在环形结构外侧，用于维持多个花纹片1组成的环形结构的形状，其中如图10所示，花纹片外壳2由多块能拆分的弧形壳体组装而成，在安装时，将花纹片1从各个弧形壳体的侧面装入弧形壳体的内部，如此能保证各个花纹片1顺利的安装至花纹片外壳2的内部，待各个弧形壳体中均装满花纹片1后，将装满花纹片1的多个弧形壳体组装拼接成为整体的花纹块，可以通过将多个弧形壳体直接安装 在模具的内腔中通过内腔的内壁来维持花纹块的形状，或者也可以通过能拆分的连接件将多个弧形壳体连接后再装设于模具的内腔中。环形结构内部设有排气通道11，其中，排气通道11可以设在每个花纹片1的内部，或者排气通道11还可以设在每两个相邻排布的花纹片1之间，排气通道11连通环形结构的内侧与外侧，当排气通道11设在每两个相邻排布的花纹片1之间时，排气通道11包括位于每两个相邻排布的花纹片1之间且沿环形结构的轴向设置的能阻止橡胶坯料溢出环形结构的排气间隙111，排气间隙111靠近环形结构的内侧设置并与环形结构的内部连通，排气间隙111可以在轮胎成型时将环形结构内的空气排出并有效的阻止橡胶坯料从环形空间的内部向外溢出。
进一步地，如图3～图5所示，本发明提供的无气孔轮胎活络模具的花纹块，其中，排气通道11还包括轴向排气槽112、径向排气槽113和周向排气槽114，轴向排气槽112位于每两个相邻排布的花纹片1之间，且轴向排气槽112沿环形结构的轴向设置并与排气间隙111平行，径向排气槽113位于每两个相邻排布的花纹片1之间并沿环形结构的径向设置，周向排气槽114环绕设置在环形结构的外周面上，且周向排气槽114与花纹块的外侧连通，排气间隙111、轴向排气槽112、径向排气槽113、周向排气槽114顺次连通构成排气通道11。其中轴向排气槽112、径向排气槽113均为凹设在每个花纹片1侧壁上的通道，其中可以在每个花纹片1的一侧设有轴向排气槽112和径向排气槽113，当多个花纹片1排列组装形成环形结构时，每个花纹片1设有轴向排气槽112和径向排气槽113的一侧均与相邻排布的花纹片1未设有轴向排气槽112和径向排气槽113的一侧紧密贴合，形成截面为半圆形的封闭的通道，或者在每个花纹片1的两侧均设有轴向排气槽112和径向排气槽113，当多个花纹片1排列组装成环型结构时，每个花纹片1两侧壁上的轴向排气槽112和径向排气槽113分别与相邻的两个花纹片1一侧的轴向排气槽112和径向排气槽113相互配合，形成截面为圆形的封闭的通道。而周向排气槽114为凹设在每个花纹片1的外周面上的通道，其中当多个花纹片1排列形成环形结构时，每个花纹片1上的周向排气槽114相互连通，在环形结构的外周面上形成一圈内凹的通道。
更进一步地，本发明提供的无气孔轮胎活络模具的花纹块，其中，排气间隙111的宽度为0.005mm～0.1mm。当排气间隙111的宽度在此范围内时，可以保证环形结构内部气体排出的同时阻止橡胶坯料溢出。
作为优选，本发明提供的无气孔轮胎活络模具的花纹块，其中，排气间隙111的宽度为0.02mm～0.06mm。当排气间隙111的宽度在此范围内时，在能够保证环形结构内 部气体排出并阻止橡胶坯料溢出的同时，可以从最大程度上保证环形结构内部气体排出的速度。其中本领域技术人员可以根据不同厂家不同的胶料配方来加工具有不同宽度、及不同的排气间隙111宽度的花纹片1。
进一步地，如图3所示，本发明提供的无气孔轮胎活络模具的花纹块，其中，沿环形结构的轴向，各花纹片1均由多层片体14组接而成。在图3中可以看出，本实施例中，花纹片1包括上中下三层片体14。在其他实施方式中，花纹片1也可以包括两层片体14、四层片体14、五层片体14等等，本领域技术人员可以根据不同的轮胎厂家要求、不同的花纹形式设置不同层数片体14的花纹片1，且各层片体14可以为一体成型或者焊接为一体，或者各层片体14还可以通过连接件能拆装的连接并组成各个花纹片1。其中根据各种花纹的不同型式，包括胎顶曲线的曲率等，结合花纹的总宽度的不同及花纹片1的加工工艺性来确定花纹片1分割的层数。花纹片1的片体14越小，其加工工艺性也就越好，成本也会随之降低。
更进一步地，如图6所示，本发明提供的无气孔轮胎活络模具的花纹块，其中，每两个相邻排布的花纹片1之间的分型面为曲面、平面或折面。其中，曲面和折面的分型面是通过将每个花纹片1的多个片体14之间设为具有一定的角度来实现的。
进一步地，如图1～图5所示，本发明提供的无气孔轮胎活络模具的花纹块，其中，环形结构的内周面上设有多个呈环形排列设置的周向花筋12和多个呈间隔排列设置的钢片13，每个花纹片1上均设有周向花筋12与钢片(或径向花筋)13。其中每个花纹片1上的周向花筋12连续排列形成一个环形，从而在轮胎的胎面上形成环形内凹。每个花纹片1上的钢片(或径向花筋)13均沿所在花纹片1的轴向排列，其中当每两个相邻排布的花纹片1之间的分型面为曲面或折面时，也就是将每个花纹片1的多个片体14之间设为具有一定的角度，其中分型面的形状可以根据各种花纹的不同的节距为基础，结合花纹片1的周向花筋12及钢片(或径向花筋)13等内容的变化来确定，如此设置可以方便周向花筋12及钢片(或径向花筋)13的排布及对接，避免周向花筋12以及钢片(或径向花筋)13在对接时出现的各种问题。
进一步地，如图1所示，本发明提供的无气孔轮胎活络模具的花纹块，其中，环形结构与花纹片外壳2通过拉紧块3和拉紧螺栓4连接，拉紧块3与环形结构嵌接，拉紧螺栓4由环形结构的外侧穿过环形结构并与拉紧块3旋接。其中拉紧块3通常设在每个花纹片1的两个相邻的片体14之间。通过设置拉紧块3与拉紧螺栓4可以有效的将每个花纹片1的各个片体14与花纹片外壳2紧密的固定在一起，从而形成花纹块。在本 实施方式中，拉紧块3为截面为梯形的块体。
更进一步地，如图7所示，本发明提供的无气孔轮胎活络模具的花纹块，其中，拉紧块3还可以设为截面为T字型的块体，与截面为梯形的块体相同均可以起到固定花纹片1与花纹片外壳2的作用。需要说明的是：本发明中花纹片1与花纹片外壳2的配合方式有很多种，本领域技术人员可以根据花纹片1实际分割的情况来确定更适合的连接方式。
作为优选，本发明提供的无气孔轮胎活络模具的花纹块，其中，花纹片1的材质为钢、锻铝或铸铝，花纹片外壳2的材质为钢或铝。
如图8所示，本发明提供了一种无气孔轮胎活络模具，其中，无气孔轮胎活络模具包括如上所述的无气孔轮胎活络模具的花纹块、上侧板5和下侧板6，无气孔轮胎活络模具的花纹块的环形结构的内侧与上侧板5、下侧板6共同形成无气孔轮胎活络模具的内腔，环形结构上的排气通道11连通内腔与无气孔轮胎活络模具的外部。
本发明提供了另一种无气孔轮胎活络模具的花纹块，其具体结构也可以参照图1～图7及图10，其中，无气孔轮胎活络模具的花纹块包括多个花纹片1和花纹片外壳2，多个花纹片1沿周向排列组装并形成能容纳轮胎成型用橡胶坯料(即胎坯)的环形结构，即每个花纹片1的径向截面均呈由环形结构外侧至环形结构内侧渐缩的扇形，且环形结构在轮胎成型时与橡胶坯料直接接触，花纹片外壳2套装在环形结构外侧，用于维持多个花纹片1组成的环形结构的形状。环形结构内部设有排气通道11，其中，排气通道11可以设在每个花纹片1的内部，或者排气通道11还可以设在每两个相邻排布的花纹片1之间，排气通道11连通环形结构的内侧与外侧。
进一步地，本发明提供的另一种无气孔轮胎活络模具的花纹块，其中，所述排气通道包括顺次连通的排气间隙111、轴向排气槽112、径向排气槽113和周向排气槽114，排气间隙111位于每两个相邻排布的花纹片1之间并沿环形结构的轴向设置，且排气间隙111能阻止橡胶坯料溢出环形结构，轴向排气槽112位于每两个相邻排布的花纹片1之间并沿环形结构的轴向设置，且轴向排气槽112与排气间隙111平行，径向排气槽113位于每两个相邻排布的花纹片1之间并沿环形结构的径向设置，周向排气槽114环绕设置在环形结构的外周面上，且周向排气槽114与花纹块1的外侧连通。当排气通道11设在每两个相邻排布的花纹片1之间时，排气通道11包括位于每两个相邻排布的花纹片1之间且沿环形结构的轴向设置的能阻止橡胶坯料溢出环形结构的排气间隙111，排气间隙111靠近环形结构的内侧设置并与环形结构的内部连通，排气间隙111可以在轮 胎成型时将环形结构内的空气排出并有效的阻止橡胶坯料从环形空间的内部向外溢出。其中轴向排气槽112、径向排气槽113均为凹设在每个花纹片1侧壁上的通道，其中可以在每个花纹片1的一侧设有轴向排气槽112和径向排气槽113，当多个花纹片1排列组装形成环形结构时，每个花纹片1设有轴向排气槽112和径向排气槽113的一侧均与相邻排布的花纹片1未设有轴向排气槽112和径向排气槽113的一侧紧密贴合，形成截面为半圆形的封闭的通道，或者在每个花纹片1的两侧均设有轴向排气槽112和径向排气槽113，当多个花纹片1排列组装成环型结构时，每个花纹片1两侧壁上的轴向排气槽112和径向排气槽113分别与相邻的两个花纹片1一侧的轴向排气槽112和径向排气槽113相互配合，形成截面为圆形的封闭的通道。而周向排气槽114为凹设在每个花纹片1的外周面上的通道，其中当多个花纹片1排列形成环形结构时，每个花纹片1上的周向排气槽114相互连通，在环形结构的外周面上形成一圈内凹的通道。
本发明提供的另一种无气孔轮胎活络模具的花纹块的其他结构与前述无气孔轮胎活络模具的花纹块的结构基本相同，再此不再赘述。
本发明还提供了另一种无气孔轮胎活络模具，其具体结构也可以参照图8，其中，该无气孔轮胎活络模具包括如上所述的另一种无气孔轮胎活络模具的花纹块、上侧板5和下侧板6，无气孔轮胎活络模具的花纹块的环形结构的内侧与上侧板5、下侧板6共同形成无气孔轮胎活络模具的内腔，环形结构上的排气通道11连通内腔与无气孔轮胎活络模具的外部。
如图9所示，本发明提供的无气孔轮胎活络模具及其花纹块在使用时，气体由环形结构的内侧通过排气间隙111进入轴向排气槽112，并通过径向排气槽113到达周向排气槽114，由于花纹片1与花纹片外壳2之间并不是密封连接，可以看作是周向排气槽114与花纹块或模具的外部连通，从而将花纹块或模具内的气体排出。
与现有技术相比，本发明的优点如下：
1、本发明通过将无气孔轮胎活络模具的花纹块设为由排列形成环形结构的多个花纹片和花纹片外壳组成，并在每两个相邻排布的花纹片之间设置排气通道，同时排气通道包括有能阻止橡胶溢出的排气间隙，可以使花纹块具有良好的排气性能，达到只排气而不跑胶的效果，使最终成型的轮胎的胎面无胶毛，保证了轮胎的外观质量，避免了胶料不必要的浪费，保证了生产成本。
2、本发明提供的无气孔轮胎活络模具及其花纹块，其中花纹片的尺寸较小，机械加工简单，便于批量生产，并且，本发明的花纹片具有可单独置换的特点，同规格的花 纹片之间可以根据花纹节距进行置换而不影响无气孔轮胎活络模具及其花纹块整体的使用效果，可以大大延长无气孔轮胎活络模具及其花纹块的使用寿命，从而降低轮胎的制造成本。
以上所述仅为本发明示意性的具体实施方式，并非用以限定本发明的范围。任何本领域的普通技术人员，在不脱离本发明的构思和原则的前提下所作出的等同变化与修改，均应属于本发明保护的范围。

Claims (20)

  1. 一种无气孔轮胎活络模具的花纹块，其特征在于，所述无气孔轮胎活络模具的花纹块包括多个花纹片和花纹片外壳，多个所述花纹片沿周向排列组装并形成能容纳轮胎成型用橡胶坯料的环形结构，所述花纹片外壳套装在所述环形结构的外侧，所述环形结构的内部设有排气通道，所述排气通道连通所述环形结构的内侧与外侧，所述排气通道包括位于每两个相邻排布的所述花纹片之间且沿所述环形结构的轴向设置的能阻止所述橡胶坯料溢出所述环形结构的排气间隙，所述排气间隙靠近所述环形结构的内侧设置。
  2. 根据权利要求1所述的无气孔轮胎活络模具的花纹块，其特征在于，所述排气通道还包括轴向排气槽、径向排气槽和周向排气槽，所述轴向排气槽位于每两个相邻排布的所述花纹片之间，且所述轴向排气槽沿所述环形结构的轴向设置并与所述排气间隙平行，所述径向排气槽位于每两个相邻排布的所述花纹片之间并沿所述环形结构的径向设置，所述周向排气槽环绕设置在所述环形结构的外周面上，且所述周向排气槽与所述花纹块的外侧连通，所述排气间隙、所述轴向排气槽、所述径向排气槽、所述周向排气槽顺次连通构成所述排气通道。
  3. 根据权利要求1所述的无气孔轮胎活络模具的花纹块，其特征在于，所述排气间隙的宽度为0.005mm～0.1mm。
  4. 根据权利要求3所述的无气孔轮胎活络模具的花纹块，其特征在于，所述排气间隙的宽度为0.02mm～0.06mm。
  5. 根据权利要求1所述的无气孔轮胎活络模具的花纹块，其特征在于，沿所述环形结构的轴向，各所述花纹片均由多层片体组接而成。
  6. 根据权利要求1所述的无气孔轮胎活络模具的花纹块，其特征在于，每两个相邻排布的所述花纹片之间的分型面为曲面、平面或折面。
  7. 根据权利要求1所述的无气孔轮胎活络模具的花纹块，其特征在于，所述环形结构的内周面上设有多个呈环形排列设置的周向花筋和多个呈间隔排列设置的钢片，每个所述花纹片上均设有所述周向花筋与所述钢片。
  8. 根据权利要求1所述的无气孔轮胎活络模具的花纹块，其特征在于，所述环形结构与所述花纹片外壳通过拉紧块和拉紧螺栓连接，所述拉紧块与所述环形结构嵌接，所述拉紧螺栓由所述环形结构的外侧穿过所述环形结构并与所述拉紧块旋接。
  9. 根据权利要求1所述的无气孔轮胎活络模具的花纹块，其特征在于，所述花纹片的材质为钢、锻铝或铸铝，所述花纹片外壳的材质为钢或铝。
  10. 一种无气孔轮胎活络模具，其特征在于，所述无气孔轮胎活络模具包括上述权利要求1-9任一项所述的无气孔轮胎活络模具的花纹块，所述无气孔轮胎活络模具的花纹块的环形结构的内侧形成所述无气孔轮胎活络模具的内腔，所述环形结构上的排气通道连通所述内腔与所述无气孔轮胎活络模具的外部。
  11. 一种无气孔轮胎活络模具的花纹块，其特征在于，所述无气孔轮胎活络模具的花纹块包括多个花纹片和花纹片外壳，多个所述花纹片沿周向排列组装并形成能容纳轮胎成型用橡胶坯料的环形结构，所述花纹片外壳套装在所述环形结构的外侧，所述环形结构的内部设有排气通道，所述排气通道连通所述环形结构的内侧与外侧。
  12. 根据权利要求11所述的无气孔轮胎活络模具的花纹块，其特征在于，所述排气通道包括顺次连通的排气间隙、轴向排气槽、径向排气槽和周向排气槽，所述排气间隙位于每两个相邻排布的所述花纹片之间并沿所述环形结构的轴向设置，且排气间隙能阻止所述橡胶坯料溢出所述环形结构，所述轴向排气槽位于每两个相邻排布的所述花纹片之间并沿所述环形结构的轴向设置，且所述轴向排气槽与所述排气间隙平行，所述径向排气槽位于每两个相邻排布的所述花纹片之间并沿所述环形结构的径向设置，所述周向排气槽环绕设置在所述环形结构的外周面上，且所述周向排气槽与所述花纹块的外侧连通。
  13. 根据权利要求12所述的无气孔轮胎活络模具的花纹块，其特征在于，所述排气间隙的宽度为0.005mm～0.1mm。
  14. 根据权利要求13所述的无气孔轮胎活络模具的花纹块，其特征在于，所述排气间隙的宽度为0.02mm～0.06mm。
  15. 根据权利要求11所述的无气孔轮胎活络模具的花纹块，其特征在于，沿所述环形结构的轴向，各所述花纹片均由多层片体组接而成。
  16. 根据权利要求11所述的无气孔轮胎活络模具的花纹块，其特征在于，每两个相邻排布的所述花纹片之间的分型面为曲面、平面或折面。
  17. 根据权利要求11所述的无气孔轮胎活络模具的花纹块，其特征在于，所述环形结构的内周面上设有多个呈环形排列设置的周向花筋和多个呈间隔排列设置的钢片，每个所述花纹片上均设有所述周向花筋与所述钢片。
  18. 根据权利要求11所述的无气孔轮胎活络模具的花纹块，其特征在于，所述环 形结构与所述花纹片外壳通过拉紧块和拉紧螺栓连接，所述拉紧块与所述环形结构嵌接，所述拉紧螺栓由所述环形结构的外侧穿过所述环形结构并与所述拉紧块旋接。
  19. 根据权利要求11所述的无气孔轮胎活络模具的花纹块，其特征在于，所述花纹片的材质为钢、锻铝或铸铝，所述花纹片外壳的材质为钢或铝。
  20. 一种无气孔轮胎活络模具，其特征在于，所述无气孔轮胎活络模具包括上述权利要求11-19任一项所述的无气孔轮胎活络模具的花纹块，所述无气孔轮胎活络模具的花纹块的环形结构的内侧形成所述无气孔轮胎活络模具的内腔，所述环形结构上的排气通道连通所述内腔与所述无气孔轮胎活络模具的外部。
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