CN107791550A - A kind of method for preventing tyre non-circularity design defect - Google Patents
A kind of method for preventing tyre non-circularity design defect Download PDFInfo
- Publication number
- CN107791550A CN107791550A CN201711045840.XA CN201711045840A CN107791550A CN 107791550 A CN107791550 A CN 107791550A CN 201711045840 A CN201711045840 A CN 201711045840A CN 107791550 A CN107791550 A CN 107791550A
- Authority
- CN
- China
- Prior art keywords
- segmented mold
- diameter
- sulfidation
- circularity
- tyre
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- 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.)
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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
- 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
- B29D30/0629—Vulcanising moulds not integral with vulcanising presses with radially movable sectors
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A kind of method for preventing tyre non-circularity design defect, including considering tyre cover base diameter, the corresponding relation of decorative pattern form and mould inner and outer diameter, it is due to this prejudice caused by problem in production process that the present invention, which has broken the tyre non-circularity thought of tradition, from tire and mold design angle, analyze the relation of green tyre diameter and mould diameter, analyzed from the mechanism of production of out-of-roundness and propose solution, angle combination radial production process of the present invention from radial tire designs, it have found the out-of-roundness problem being likely to occur in radial tire designs and propose prevention method.
Description
Technical field
The present invention relates to a kind of method for preventing tyre non-circularity design defect.
Background technology
With the development of Road Transportation industry and automobile industry, cruising characteristic and comfortableness of the in the market for vehicle
It is required that more and more higher.Tyre evenness directly affects control stability and riding comfort under vehicle high-speed state, and tire is not
Can uniformly vehicle be caused to be shaken, handling variation, serious may trigger traffic accident, cause Loss of Life and property, take turns
The uneven subject matter for having become client's complaint of tire, therefore the problem of non-uniform of tire has become influence tire and made
One subject matter.
The uniformity of tire mainly includes physical dimension uniformity, Mass Distribution uniformity and power distributing homogeneity.Now,
Client requires that us highest is physical dimension uniformity therein, i.e. out-of-roundness.It is non-round in GB/T 30198-2013 automobiles
Spend in test method, teach the mode classification of tyre non-circularity in detail.It is different according to tire position, out-of-roundness is decomposed into top
Portion's radial missing（RROt）, central radial missing（RROc）, bottom radial missing（RROb）, top lateral deviation（LROt）And bottom
Portion's lateral deviation（LROb）.Past thinks that tyre non-circularity is due to that feeding is uneven in production process, mechanical concentricity always
Caused by not enough, never accounted for from design angle.
The content of the invention
The purpose of the present invention is straight using the fetus in segmented mold vulcanized radial and forming process by studying
The relation in footpath, there is provided a kind of prevention method for solving tyre non-circularity design defect, at the product design initial stage with regard to product can be predicted
Design defect in terms of out-of-roundness.
Technical scheme is specially：
A kind of method for preventing tyre non-circularity design defect, including consider inside and outside tyre cover base diameter, decorative pattern form and mould
The corresponding relation of diameter, the method for the prevention tyre non-circularity design defect include and use one of them,
（1）Ensure that product has less tire base diameter G, tire base diameter G to be less than D4；
（2）If tire base diameter cannot be guaranteed to be less than D4, subtract the depth of shallow thin cutter groove by changing Design of Moulds so as to increase
Add D4 size, to ensure G≤D4；
（3）If tire base diameter can neither be reduced, D4 can not be increased by subtracting the depth of shallow thin cutter groove again, then by using more
The sizing material accumulation formed between the adjacent segmented mold of form guarantee of block segmented mold is sufficiently small, and mould is at least by 10 pieces of active modules
Into；
The G is tire base diameter, is crown central diameter of the tire in sulfidation under one-step building pressure；
The D4 is the horizontal cutter groove bottom of trench overall diameter under segmented mold stroke to minimum state in sulfidation.
The tire base diameter G has three kinds of states, i.e.,
A, D3 ＜ G ＜ D1, the stacking states of sizing material are formed in sulfidation between SipeA and SipeB；
B, D4≤G ＜ D3, in sulfidation, the heap of sizing material will not be formed when segmented mold starts matched moulds between SipeA and SipeB
Product, when segmented mold stroke H is decreased to zero, can form the accumulation of a small amount of sizing material between SipeA and SipeB；
C, the accumulation of sizing material will not be formed between G≤D4, SipeA and SipeB；
The D1 is the mould overall diameter under segmented mold stroke to maximum rating in sulfidation；
The D3 is the mould overall diameter under segmented mold stroke to minimum state in sulfidation；
The D4 is the horizontal cutter groove interior diameter under segmented mold stroke to minimum state in sulfidation；
The H is segmented mold stroke；
Described SipeA, SipeB are the adjacent steel disc of different segmented molds.
The tyre tread form is to have thinner transverse pattern cutter groove.
Relative to prior art, it is due to problem in production process that the present invention, which has broken the tyre non-circularity that tradition is thought,
Caused by this prejudice, from tire and mold design angle, analyze the relation of green tyre diameter and mould diameter, from
Analyzed in the mechanism of production of out-of-roundness and propose solution, angle combination rotating radial of the present invention from radial tire designs
Tire production process, it have found the out-of-roundness problem being likely to occur in radial tire designs and propose prevention method.
Brief description of the drawings
Fig. 1 is the structural representation under segmented mold two states in the present invention.
Fig. 2 is the structural representation that mould is formed without several piece segmented mold.
Embodiment
Due to being vulcanized using segmented mold, in sulfidation, segmented mold has the displacement of radial direction, in Fig. 1 with H tables
Show, therefore, in product design process, it is necessary to consider tyre cover base diameter, the relation of decorative pattern form and mould inner and outer diameter, wheel
Tire decorative pattern form is thinner to have（≤3mm）Transverse pattern cutter groove design decorative pattern, the mould used by S1, S2, S3, S4, S5,
Totally 9 pieces of segmented molds form by S6, S7, S8 and S9.
As shown in fig. 1, outer shroud is state when segmented mold stroke is maximum, and segmented mold stroke is to maximum in sulfidation
Mould overall diameter under state is D1, and the mould interior diameter in sulfidation under segmented mold stroke to maximum rating is D2, inner ring
State when for segmented mold stroke being minimum, the mould overall diameter in sulfidation under segmented mold stroke to minimum state is D3,
Mould interior diameter in sulfidation under segmented mold stroke to minimum state is D4, and green tyre diameter G has three kinds of states：
If a, D3<G<D1, then in sulfidation, a kind of stacking states of sizing material can be formed between Sipe A and Sipe B,
So as to which the joint location in adjacent segmented mold can form periodic local crowning, the out-of-roundness of tire is influenceed；
If b, D4≤G<D3, then, will not shape between Sipe A and Sipe B when segmented mold has just started matched moulds in sulfidation
Accumulated into sizing material, but when segmented mold stroke H is decreased to close to zero, a small amount of sizing material can be formed between Sipe A and Sipe B
Accumulation, so as to form periodic small-sized projection in adjacent segmented mold joint, influence the out-of-roundness detection of product；
If c, G≤D4, in the whole stroke of sulfidation segmented mold, will not be in contact between fetus and mould, only
Behind segmented mold stroke H=0, internal pressure just promotes fetus expansion contact mould, therefore will not form glue between Sipe A and Sipe B
The uneven accumulation of material, does not interfere with out-of-roundness.
Above-mentioned, Sipe A and Sipe B are the adjacent steel discs of different segmented molds.
Based on above-mentioned analysis, the generation of tyre non-circularity and mould, tire are designed with much relations, inquire about related material
Material, do not find that solution is analyzed and proposed from the mechanism of production of out-of-roundness, the present invention has broken what tradition was thought
Tyre non-circularity is due to this prejudice caused by problem in production process, analyzes and proposes from the mechanism of production of out-of-roundness
Prevention method.
According to three kinds of states of tire base diameter, wanting the out-of-roundness defect of pre- protected tyre needs to ensure G≤D4, is set in tire
The design defect of product is avoided using a kind of in following methods during meter：
（1）Ensure that product has less tire base diameter G, tire base diameter G to be less than D4, tire base diameter G is tire in sulfidation
Crown central diameter under one-step building pressure；
（2）If tire base diameter G cannot be guaranteed to be less than D4, subtracted by changing Design of Moulds the depth of shallow thin cutter groove so as to
Increase D4 size, ensure G≤D4；
（3）If tire base diameter G can neither be reduced, it can not increase D4 by subtracting shallow thin cutter groove depth again, then change segmented mold
Form, it is sufficiently small by using the sizing material accumulation formed between the adjacent segmented mold of form guarantee of polylith segmented mold, such as institute in Fig. 2
Show, mould is by S1, S2, S3, S4 ... forms without several piece segmented mold.
Above-described is only the preferred embodiment of the present invention, it is noted that for those skilled in the art,
Under the premise of general idea of the present invention is not departed from, some changes and improvements can also be made, these should also be considered as the present invention's
Protection domain.
Claims (3)
- A kind of 1. method for preventing tyre non-circularity design defect, it is characterised in that：Including considering tyre cover base diameter, decorative pattern shape The corresponding relation of formula and mould inner and outer diameter, the method for the prevention tyre non-circularity design defect include and use wherein it One,（1）Ensure that product has less tire base diameter G, tire base diameter G to be less than D4；（2）If tire base diameter cannot be guaranteed to be less than D4, subtract the depth of shallow thin cutter groove by changing Design of Moulds so as to increase Add D4 size, to ensure G≤D4；（3）If tire base diameter can neither be reduced, D4 can not be increased by subtracting the depth of shallow thin cutter groove again, then by using more The sizing material accumulation formed between the adjacent segmented mold of form guarantee of block segmented mold is sufficiently small, and mould is at least by 10 pieces of active modules Into；The G is tire base diameter, is crown central diameter of the tire in sulfidation under one-step building pressure；The D4 is the horizontal cutter groove bottom of trench overall diameter under segmented mold stroke to minimum state in sulfidation.
- 2. the method for prevention tyre non-circularity design defect as claimed in claim 1, it is characterised in that：The tire base diameter G With three kinds of states, i.e.,A, D3 ＜ G ＜ D1, the stacking states of sizing material are formed in sulfidation between SipeA and SipeB；B, D4≤G ＜ D3, in sulfidation, the heap of sizing material will not be formed when segmented mold starts matched moulds between SipeA and SipeB Product, when segmented mold stroke H is decreased to zero, can form the accumulation of a small amount of sizing material between SipeA and SipeB；C, the accumulation of sizing material will not be formed between G≤D4, SipeA and SipeB；The D1 is the mould overall diameter under segmented mold stroke to maximum rating in sulfidation；The D3 is the mould overall diameter under segmented mold stroke to minimum state in sulfidation；The D4 is the horizontal cutter groove interior diameter under segmented mold stroke to minimum state in sulfidation；The H is segmented mold stroke；Described SipeA, SipeB are the adjacent steel disc of different segmented molds.
- 3. the method for prevention tyre non-circularity design defect as claimed in claim 1, it is characterised in that：The tyre tread has Thinner transverse pattern cutter groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711045840.XA CN107791550A (en) | 2017-10-31 | 2017-10-31 | A kind of method for preventing tyre non-circularity design defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711045840.XA CN107791550A (en) | 2017-10-31 | 2017-10-31 | A kind of method for preventing tyre non-circularity design defect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107791550A true CN107791550A (en) | 2018-03-13 |
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| CN201711045840.XA Pending CN107791550A (en) | 2017-10-31 | 2017-10-31 | A kind of method for preventing tyre non-circularity design defect |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077632A (en) * | 2007-06-20 | 2007-11-28 | 昊华南方(桂林)橡胶有限责任公司 | Radial ply tyre carcass tyre facing stepwise molding sulfuration process |
| EP2418098A2 (en) * | 2010-08-12 | 2012-02-15 | The Boeing Company | Non-pneumatic tire and wheel assembly and a fabrication method |
| CN104853906A (en) * | 2012-12-20 | 2015-08-19 | 倍耐力轮胎股份公司 | A method for controlling the geometry of green tyres different from each other and a process for manufacturing tyres different form each other |
| CN105307845A (en) * | 2013-02-22 | 2016-02-03 | 哈布尔格-弗罗伊登贝格尔机械工程有限公司 | Method and device for producing green tires |
| CN205102814U (en) * | 2015-11-19 | 2016-03-23 | 德州玲珑轮胎有限公司 | Tire mould pattern depth and roundness detection device |
| US9475244B2 (en) * | 2010-08-12 | 2016-10-25 | The Boeing Company | Method for fabrication of a non-pneumatic survivable tire and wheel assembly |
-
2017
- 2017-10-31 CN CN201711045840.XA patent/CN107791550A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101077632A (en) * | 2007-06-20 | 2007-11-28 | 昊华南方(桂林)橡胶有限责任公司 | Radial ply tyre carcass tyre facing stepwise molding sulfuration process |
| EP2418098A2 (en) * | 2010-08-12 | 2012-02-15 | The Boeing Company | Non-pneumatic tire and wheel assembly and a fabrication method |
| US9475244B2 (en) * | 2010-08-12 | 2016-10-25 | The Boeing Company | Method for fabrication of a non-pneumatic survivable tire and wheel assembly |
| CN104853906A (en) * | 2012-12-20 | 2015-08-19 | 倍耐力轮胎股份公司 | A method for controlling the geometry of green tyres different from each other and a process for manufacturing tyres different form each other |
| CN105307845A (en) * | 2013-02-22 | 2016-02-03 | 哈布尔格-弗罗伊登贝格尔机械工程有限公司 | Method and device for producing green tires |
| CN205102814U (en) * | 2015-11-19 | 2016-03-23 | 德州玲珑轮胎有限公司 | Tire mould pattern depth and roundness detection device |
Non-Patent Citations (2)
| Title |
|---|
| 侯宪富: "活络模型的故障分析及解决方法", 《橡胶技术与装备》 * |
| 浦哲 等: "活络模硫化子午线轮胎胶边影响因素及解决措施", 《轮胎工业》 * |
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Application publication date: 20180313 |
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