CN104325669B - The manufacture method of spacer separated tyre - Google Patents
The manufacture method of spacer separated tyre Download PDFInfo
- Publication number
- CN104325669B CN104325669B CN201410442210.6A CN201410442210A CN104325669B CN 104325669 B CN104325669 B CN 104325669B CN 201410442210 A CN201410442210 A CN 201410442210A CN 104325669 B CN104325669 B CN 104325669B
- Authority
- CN
- China
- Prior art keywords
- annular spacer
- seal kit
- spacer seal
- pressure disc
- rupture pressure
- 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.)
- Expired - Fee Related
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Tyre Moulding (AREA)
Abstract
The present invention relates to the manufacture method of a kind of spacer separated tyre, it is characterized in that: make the airtight glue-line sleeve of tire respectively, annular spacer Seal Kit and rupture pressure disc layer, the semi-core wheeled folding former of detachable drum shoulder composition on six pieces of formula folding drum watt both sides cards is utilized to be fabricated to fetus, fetus is taken off from semi-core wheeled folding former, after by hand airtight glue-line sleeve being packed into fetus, put into the fetal membrane without capsule air shaper vulcanizer to be vulcanized to be integrated and obtain forming tire, rupture pressure disc layer fits to form outside annular spacer Seal Kit annular spacer Seal Kit assembly, annular spacer Seal Kit assembly is sticked in forming tire.The method that the present invention provides, spacer separated tyre disclosed in the Chinese invention patent of Patent No. 200910117436.8 can be produced, and between tire body and annular spacer, seal and have additional rupture pressure disc layer between draw-in groove and convex card key, rupture pressure disc layer is fitted tightly over outside annular spacer Seal Kit.
Description
Technical field
The invention belongs to automobile tyre technical field, be specifically related to the manufacture method of a kind of spacer separated tyre.
Background technology
At present, commonly used automobile tire is without liner, tubeless tire.In the process of moving, under high temperature road environment, or punctured by sharp-pointed stone or other sharp weapon, can cause suddenly and blow out, cause vehicle accident.The Chinese invention patent of Patent No. 200910117436.8 discloses a kind of spacer separated tyre, can be prevented effectively from and cause vehicle accident because of quick-fried tire.In order to this spacer separated tyre is capable of industrialized production, patentee feels the need to provide the manufacture method of spacer separated tyre.
Summary of the invention
The technical problem to be solved in the present invention is to provide the manufacture method of spacer separated tyre.This spacer separated tyre is the improvement of spacer separated tyre disclosed in the Chinese invention patent to Patent No. 200910117436.8, between tire body and annular spacer Seal Kit (i.e. annular spacer), having additional rupture pressure disc layer between sealing draw-in groove (i.e. keyway) and convex card key (the most convex key), rupture pressure disc layer is fitted tightly over outside annular spacer Seal Kit.
It is as follows that the present invention solves the technical scheme that above-mentioned technical problem taked: the manufacture method of a kind of spacer separated tyre, it is characterized in that: make the airtight glue-line sleeve of tire respectively, annular spacer Seal Kit and rupture pressure disc layer, the semi-core wheeled folding former of detachable drum shoulder composition on six pieces of formula folding drum watt both sides cards is utilized to be fabricated to fetus, fetus is taken off from semi-core wheeled folding former, after by hand airtight glue-line sleeve being packed into fetus, put into the fetal membrane without capsule air shaper vulcanizer to be vulcanized to be integrated and obtain forming tire, rupture pressure disc layer fits to form outside annular spacer Seal Kit annular spacer Seal Kit assembly, annular spacer Seal Kit assembly is sticked in forming tire.Concrete manufacture method is as follows:
A, make airtight glue-line sleeve
Utilize existing tyre surface formula gelatin extrusion machine, rubber-tyred winding wheel and spill rolling wheel, sphenoid contour plate is installed in the lumen type lower end of gelatin extrusion machine head, gelatin extrusion machine is extruded airtight glue-line belt strip and is sent to rubber-tyred winding wheel winding one week, then shapes with the rolling of spill rolling wheel；The shape of sphenoid contour plate, the shape of rubber-tyred winding wheel outer surface, spill rolling wheel outer surface shape all with the shape adaptation of airtight glue-line sleeve cavity volume；
B, making annular spacer Seal Kit
The injection orifice of mould external member is connected with the injection nozzle (prior art) of spiro rod plasticizing injection machine, utilizes mould external member to make annular spacer Seal Kit；
C, making rupture pressure disc layer
With existing rupture pressure disc as raw material, be heated to softening point through blowing, seamless stamping-out, be fabricated to annular spacer Seal Kit two outside the rupture pressure disc layer of shape adaptation；
D, utilize on six pieces of formula folding drum watt both sides cards the semi-core wheeled folding former of detachable drum shoulder composition to be fabricated to fetus, take off fetus from semi-core wheeled folding former, manual airtight glue-line sleeve is packed into fetus；
E, the fetus being set with airtight glue-line sleeve is put into the fetal membrane without capsule air shaper vulcanizer vulcanized to be integrated and obtain forming tire；
F, rupture pressure disc layer is fitted to outside annular spacer Seal Kit form annular spacer Seal Kit assembly, annular spacer Seal Kit assembly is sticked in forming tire.
The method that the present invention provides, spacer separated tyre disclosed in the Chinese invention patent of Patent No. 200910117436.8 can be produced, and between tire body and annular spacer, seal draw-in groove (i.e. keyway) and convex card key (the most convex key) between have additional rupture pressure disc layer, rupture pressure disc layer is fitted tightly over outside annular spacer Seal Kit.
Accompanying drawing explanation
Fig. 1 is the structural representation of spacer separated tyre,
Fig. 2 is the side view of Fig. 1,
Fig. 3 is the structural representation of airtight glue-line sleeve,
Fig. 4 is the side view of Fig. 3,
Fig. 5 is the structural representation of annular spacer Seal Kit,
Fig. 6 is the side view of Fig. 5,
Fig. 7 is the structural relation schematic diagram making airtight glue-line sleeve relevant device,
Fig. 8 is the structural relation schematic diagram making annular spacer Seal Kit relevant device,
Fig. 9 is the structural relation schematic diagram of the secter pat occlusion mechanism improved,
Figure 10 is the top view of Fig. 9,
Figure 11 is the structural representation of mould external member,
Figure 12 is the left view of Figure 11,
Figure 13 is to make the blowing of rupture pressure disc layer, seamless blanking apparatus,
Figure 14 is the front view of rupture pressure disc layer,
Figure 15 is the right view of Figure 14.
nullIn figure: 1 annular spacer Seal Kit，2 outer air cavitys，3 seal draw-in groove、Keyway，4 convex card keys、Convex key，The fixed card slot of 5 Seal Kits，6 flange collars，7 spill rolling wheels，8 tyre surface formula gelatin extrusion machines，9 rubber-tyred winding wheels，10 spiro rod plasticizing injector，11 mould external members，12 secter pat occlusion mechanisms，13 profile of tooth card ends，14 external mold external members，Die sleeve part in 15，16 movable rods，17 sleeve pipes，18 central shafts，19 tubular external molds，20 end face external molds，21 injection cavitys，22 bulk silica gel secter pats，23 fritter silica gel secter pats，24 steps，25 sliding sleeves，26 links，27 arc fixed blocks，28 transmission platforms support，29 supports，30 jacketed lamp bell-type blowing devices，31 gas channels，32 upper male mould supports，33 upper male moulds，34 drive screws，35 lower cavity dies，36 recessed circles，37 airtight glue-line sleeve cavity volumes，38 rupture pressure disc layers.
Detailed description of the invention
Product embodiments, see the spacer separated tyre that Fig. 1 and Fig. 2: the present invention is to be made, annular spacer Seal Kit 1 it is provided with in tire body, outer air cavity 2 it is provided with between tire body and annular spacer Seal Kit 1, along being provided with sealing draw-in groove 3 in tire body, annular spacer Seal Kit 1 is provided with convex card key 4, and convex card key 4 is corresponding with sealing draw-in groove 3 position, is closely fitted with rupture pressure disc layer outside annular spacer Seal Kit 1.
The airtight glue-line sleeve lining seeing Fig. 3 and Fig. 4: tire body innermost layer is provided with the fixed card slot 5 of Seal Kit, sees Fig. 5 and Fig. 6: annular spacer Seal Kit 1 side is provided with flange collar 6, and flange collar 6 is embedded in the fixed card slot 5 of Seal Kit.
Apparatus embodiments, applies the manufacture method of spacer separated tyre of the present invention, needs the main relevant equipment used to include:
1, tyre surface formula gelatin extrusion machine, is used for making airtight glue-line sleeve；This tyre surface formula gelatin extrusion machine is to improve existing tyre surface formula gelatin extrusion machine；See Fig. 7 and Fig. 3: in the lumen type lower end of the gelatin extrusion machine head of existing tyre surface formula gelatin extrusion machine 8, sphenoid contour plate is installed, the shape of this sphenoid contour plate and the shape adaptation of airtight glue-line sleeve cavity volume 37.
2, mould external member, makes annular spacer Seal Kit；See Figure 11 and Figure 12: mould external member 11 and include external mold external member 14, interior die sleeve part 15, movable rod 16, sleeve pipe 17 and central shaft 18；External mold external member 14 includes tubular external mold 19 and is fixedly mounted on the end face external mold 20 at tubular external mold 19 two ends, interior die sleeve part 15 is positioned at external mold external member 14 and is provided with injection cavity 21 between the two, tubular external mold 19 is provided with injection orifice, injection orifice connects with injection cavity 21, injection cavity 21 is for accommodating the rubber being injected into, form annular spacer Seal Kit 1, the shape of injection cavity 21 and the shape adaptation of annular spacer Seal Kit 1；nullInterior die sleeve part 15 includes the secter pat being distributed in six silica gel materials of end face external mold 20 inner periphery，The secter pat of six silica gel materials includes three bulk silica gel secter pats 22 and three bulk silica gel secter pats 23，Bulk silica gel secter pat 22 and the alternate setting of fritter silica gel secter pat 23 are docked on end face external mold 20，Interior die sleeve part 15 is provided with step 24，Sliding sleeve 25 it is movably installed with on central shaft 18，Link 26 it is provided with outside sliding sleeve 25，One end of movable rod 16 is arranged on link 26，The other end of movable rod 16 is provided with arc fixed block 27，Arc fixed block 27 pushes up cassette with step 24 and is connected，The function of movable rod 16 is to prop up fixing interior die sleeve part 15，Sleeve pipe 17 is arranged on central shaft 18 two ends、Sliding sleeve 25 is gripped by the outer end being positioned at sliding sleeve 25.
3, it is blow molded seamless blanking apparatus, is used for making rupture pressure disc layer；See Figure 13: be blow molded seamless blanking apparatus and include that transmission platform supports 28, support 29, jacketed lamp bell-type blowing device 30, upper male mould support 32, upper male mould 33 and lower cavity die 35, support 29 is installed on transmission platform and supports 28, jacketed lamp bell-type blowing device 30 is provided with gas channel 31, gas channel 31 is connected (not shown) with high pressure nitrogen device, jacketed lamp bell-type blowing device 30 liftable is installed on support 29, upper male mould 33 liftable is arranged on upper male mould support 32, lower cavity die 35 is provided with recessed circle 36, lower cavity die 35 is installed on transmission platform by drive screw 34 and supports 28.
4, without the secter pat occlusion mechanism of capsule air shaper vulcanizer, for airtight glue-line sleeve is integrated device forming tire with fetus sulfuration；See Fig. 9 and Figure 10: the secter pat occlusion mechanism 12 of the existing shaper vulcanizer of air without capsule is improved, outside the secter pat of secter pat occlusion mechanism, card end is fabricated to profile of tooth card end 13, profile of tooth card end 13 is consistent with convex card key 4 shape, i.e. matches with sealing draw-in groove 3 shape.
Embodiment of the method, the manufacture method of a kind of spacer separated tyre, specifically include following steps as follows:
1, airtight glue-line sleeve is made
Seeing Fig. 7: utilize existing tyre surface formula gelatin extrusion machine 8, install sphenoid contour plate in the lumen type lower end of gelatin extrusion machine head, gelatin extrusion machine 8 is extruded airtight glue-line belt strip and is sent to rubber-tyred winding wheel 9 and winds one week, then rolls with spill rolling wheel 7 and shape；The shape of sphenoid contour plate, the shape of rubber-tyred winding wheel outer surface, spill rolling wheel 7 outer surface shape all with the shape adaptation of airtight glue-line sleeve cavity volume.
2, annular spacer Seal Kit is made
See Fig. 8: be connected by the injection nozzle of the injection orifice of mould external member with the spiro rod plasticizing injection machine 10 of prior art, injection nozzle allots the SBCs elastomer plastic melt of the phenylethylene of tridimensional network composition, or other rubber and plastic conjugation melt formed by highdensity polystyrene plastics and rubber mix；Mould external member is utilized to make annular spacer Seal Kit.
3, rupture pressure disc layer is made
With existing rupture pressure disc as raw material, be heated to softening point through blowing, seamless stamping-out, be fabricated to annular spacer Seal Kit two outside the rupture pressure disc layer of shape adaptation；Method is that the rupture pressure disc of heating is placed on lower cavity die, utilize drive screw that lower cavity die moves to the underface of jacketed lamp bell-type blowing device, start high pressure nitrogen device, high pressure nitrogen enters gas channel, being of high pressure draught makes rupture pressure disc fit tightly in lower cavity die, utilize drive screw that lower cavity die moves to the underface of upper male mould support, under press punch, carry out seamless stamping-out and obtain rupture pressure disc layer.The structure of rupture pressure disc layer sees Figure 14 and Figure 15, and rupture pressure disc layer 38 fits to the both sides end face of the annular spacer Seal Kit 1 shown in Fig. 5.
4, utilize the semi-core wheeled folding former of detachable drum shoulder composition on six pieces of formula folding drum watt both sides cards to be fabricated to fetus, take off fetus from semi-core wheeled folding former, by hand airtight glue-line sleeve is packed into fetus.
5, the fetus that step 4 obtains is put into the fetal membrane without capsule air shaper vulcanizer vulcanized to be integrated and obtain forming tire.
6, rupture pressure disc layer fits to form outside annular spacer Seal Kit annular spacer Seal Kit assembly, annular spacer Seal Kit assembly is sticked in forming tire.
Claims (2)
1. the manufacture method of a spacer separated tyre, it is characterized in that: make the airtight glue-line sleeve of tire respectively, annular spacer Seal Kit and rupture pressure disc layer, the semi-core wheeled folding former of detachable drum shoulder composition on six pieces of formula folding drum watt both sides cards is utilized to be fabricated to fetus, fetus is taken off from semi-core wheeled folding former, after by hand airtight glue-line sleeve being packed into fetus, put into the fetal membrane without capsule air shaper vulcanizer to be vulcanized to be integrated and obtain forming tire, rupture pressure disc layer fits to form outside annular spacer Seal Kit annular spacer Seal Kit assembly, annular spacer Seal Kit assembly is sticked in forming tire；Concrete manufacture method is as follows:
A, make airtight glue-line sleeve
Utilize existing tyre surface formula gelatin extrusion machine, rubber-tyred winding wheel and spill rolling wheel, sphenoid contour plate is installed in the lumen type lower end of gelatin extrusion machine head, gelatin extrusion machine is extruded airtight glue-line belt strip and is sent to rubber-tyred winding wheel winding one week, then shapes with the rolling of spill rolling wheel；The shape of sphenoid contour plate, the shape of rubber-tyred winding wheel outer surface, spill rolling wheel outer surface shape all with the shape adaptation of airtight glue-line sleeve cavity volume；
B, making annular spacer Seal Kit
The injection orifice of mould external member is connected with the injection nozzle of spiro rod plasticizing injection machine, utilizes mould external member to make annular spacer Seal Kit；
C, making rupture pressure disc layer
With existing rupture pressure disc as raw material, be heated to softening point through blowing, seamless stamping-out, be fabricated to annular spacer Seal Kit two outside the rupture pressure disc layer of shape adaptation；
D, utilize on six pieces of formula folding drum watt both sides cards the semi-core wheeled folding former of detachable drum shoulder composition to be fabricated to fetus, take off fetus from semi-core wheeled folding former, manual airtight glue-line sleeve is packed into fetus；
E, the fetus being set with airtight glue-line sleeve is put into the fetal membrane without capsule air shaper vulcanizer vulcanized to be integrated and obtain forming tire；
F, rupture pressure disc layer is fitted to outside annular spacer Seal Kit form annular spacer Seal Kit assembly, annular spacer Seal Kit assembly is sticked in forming tire；
The mould external member (11) that step b is used includes external mold external member (14), interior die sleeve part (15), movable rod (16), sleeve pipe (17) and central shaft (18)；External mold external member (14) includes tubular external mold (19) and the end face external mold (20) being fixedly mounted on tubular external mold (19) two ends, interior die sleeve part (15) is positioned at external mold external member (14) and is provided with injection cavity (21) between the two, tubular external mold (19) is provided with injection orifice, injection orifice connects with injection cavity (21), the shape of injection cavity (21) and the shape adaptation of annular spacer Seal Kit (1)；nullInterior die sleeve part (15) includes the secter pat being distributed in six silica gel materials of end face external mold (20) inner periphery，The secter pat of six silica gel materials includes three bulks silica gel secter pat (22) and three bulks silica gel secter pat (23)，Bulk silica gel secter pat (22) and fritter silica gel secter pat (23) alternate setting are docked on end face external mold (20)，Interior die sleeve part (15) is provided with step (24)，Sliding sleeve (25) it is movably installed with on central shaft (18)，Sliding sleeve (25) outside is provided with link (26)，One end of movable rod (16) is arranged on link (26)，The other end of movable rod (16) is provided with arc fixed block (27)，Arc fixed block (27) is connected with step (24) top cassette，Sleeve pipe (17) is arranged on central shaft (18) two ends、Sliding sleeve (25) is gripped by the outer end being positioned at sliding sleeve (25)；
Step c is blow molded, the device that seamless stamping-out is used includes that transmission platform supports (28), support (29), jacketed lamp bell-type blowing device (30), upper male mould support (32), upper male mould (33) and lower cavity die (35), support (29) is installed on transmission platform and supports (28), jacketed lamp bell-type blowing device (30) is provided with gas channel (31), gas channel (31) is connected with high pressure nitrogen device, jacketed lamp bell-type blowing device (30) liftable is installed on support (29), upper male mould (33) liftable is arranged on upper male mould support (32), lower cavity die (35) is provided with recessed circle (36), lower cavity die (35) is installed on transmission platform by drive screw (34) and supports (28)；
The shaper vulcanizer of air without capsule that step e is used includes secter pat occlusion mechanism, and outside the secter pat of secter pat occlusion mechanism, card end is provided with profile of tooth card end (13), and profile of tooth card end (13) is consistent with convex card key (4) shape.
2. the spacer separated tyre made by manufacture method of the spacer separated tyre described in a claim 1, annular spacer Seal Kit it is provided with in tire body, outer air cavity it is provided with between tire body and annular spacer Seal Kit, along being provided with sealing draw-in groove in tire body, annular spacer Seal Kit is provided with convex card key, convex card key is corresponding with sealed card groove location, it is characterised in that: annular spacer Seal Kit (1) outside is closely fitted with rupture pressure disc layer (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410442210.6A CN104325669B (en) | 2014-09-02 | 2014-09-02 | The manufacture method of spacer separated tyre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410442210.6A CN104325669B (en) | 2014-09-02 | 2014-09-02 | The manufacture method of spacer separated tyre |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104325669A CN104325669A (en) | 2015-02-04 |
| CN104325669B true CN104325669B (en) | 2016-09-28 |
Family
ID=52400534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410442210.6A Expired - Fee Related CN104325669B (en) | 2014-09-02 | 2014-09-02 | The manufacture method of spacer separated tyre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104325669B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105058646B (en) * | 2015-07-29 | 2017-09-05 | 桂林橡胶设计院有限公司 | A kind of tire is without bladder vulcanizing machine |
| CN107225914B (en) * | 2017-04-24 | 2018-04-27 | 周春长 | If steam-hole type barrier fastener and the vapour-pressure type closure trouble-proof tire and its manufacture method of wall combination |
| CN108276621A (en) * | 2018-01-24 | 2018-07-13 | 平湖天林儿童用品有限公司 | Pushchair production method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2286114Y (en) * | 1996-11-25 | 1998-07-15 | 顾飞舟 | Explosionproof leaking stoppage inner tube of tyre for vehicle |
| CN1328925A (en) * | 2000-06-16 | 2002-01-02 | 夏卫国 | Built-in interlayer type tyre and its replacement method |
| CN101633295A (en) * | 2009-08-29 | 2010-01-27 | 周春长 | Spacer separated tyre |
| CN203528207U (en) * | 2013-10-25 | 2014-04-09 | 张坤 | Double-air-chamber explosion-proof tyre |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW564226B (en) * | 2003-02-18 | 2003-12-01 | Shuei-Jen Shiu | Enhanced method for manufacturing anti-puncturing tires |
-
2014
- 2014-09-02 CN CN201410442210.6A patent/CN104325669B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2286114Y (en) * | 1996-11-25 | 1998-07-15 | 顾飞舟 | Explosionproof leaking stoppage inner tube of tyre for vehicle |
| CN1328925A (en) * | 2000-06-16 | 2002-01-02 | 夏卫国 | Built-in interlayer type tyre and its replacement method |
| CN101633295A (en) * | 2009-08-29 | 2010-01-27 | 周春长 | Spacer separated tyre |
| CN203528207U (en) * | 2013-10-25 | 2014-04-09 | 张坤 | Double-air-chamber explosion-proof tyre |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104325669A (en) | 2015-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2724425A (en) | Tire building method | |
| CN104325669B (en) | The manufacture method of spacer separated tyre | |
| CN109318445B (en) | High-elasticity wear-resistant dual-density in-mold foamed rubber tire and manufacturing process thereof | |
| CN102159383B (en) | Process and apparatus for moulding and curing tyres | |
| CN105751426A (en) | Molding method of automotive interior part with multilayered structure | |
| US2649891A (en) | Method and apparatus for making pneumatic tires | |
| CN104972575B (en) | A kind of Silicon rubber inflatable bag forming method for the manufacture of engine heat insulation layer | |
| CN113650264A (en) | Blow molding machine convenient for demolding and using method thereof | |
| GB1307037A (en) | Method and apparatus for making a pneumatic tyre | |
| GB2134439A (en) | Moulding tyres | |
| CN206510338U (en) | Plastic mould | |
| RU2013147874A (en) | METHOD FOR PRODUCING PNEUMATIC TIRES | |
| CN101112793A (en) | Method for making non-aerated rubber tyre | |
| ES413426A1 (en) | Manufacture of pneumatic tyres | |
| CN110861335B (en) | Method for producing solid tyre | |
| CN106956448A (en) | A kind of preparation method of hollow out ball | |
| RU2376138C1 (en) | Vulcanisation method of rubber-chord items and press mould for its implementation | |
| CN215793004U (en) | Inner cavity extending periodic wave type inflation-free tire | |
| RU2384407C2 (en) | Mould for vulcanisation of hollow rubber-cord items | |
| CN204800936U (en) | Injection moulding device | |
| CN110281559A (en) | A kind of non-inflatable tyre moulding process | |
| WO2020003003A3 (en) | Method of extrusion blow molding using a liquid | |
| CN209274010U (en) | Multi-functional processing tire curing bladder mold | |
| CN103213246B (en) | Rubber diaphragm of automobile brake chamber preparation method and device | |
| CN113007354A (en) | Cavity inflatable rubber sealing product and end sealing vulcanization forming method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20200902 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |