CN102581997A - Production process of rubber diaphragm of automobile brake chamber - Google Patents
Production process of rubber diaphragm of automobile brake chamber Download PDFInfo
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- CN102581997A CN102581997A CN2012100384642A CN201210038464A CN102581997A CN 102581997 A CN102581997 A CN 102581997A CN 2012100384642 A CN2012100384642 A CN 2012100384642A CN 201210038464 A CN201210038464 A CN 201210038464A CN 102581997 A CN102581997 A CN 102581997A
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Abstract
The invention discloses a production process of a rubber diaphragm of an automobile brake chamber, and aims to solve the defects that in the prior art, a product has low yield and easiness in exposed and deflected arrangement, so that the service life and the service performance of the product are influenced, and the production cost is high. The production process has the main steps of die preparation, rubber material formation, framework formation, production formation, and three times of vulcanization, so as to obtain the product. Under the premise of not influencing the production efficiency of the product, the product yield and the product properties are improved and the production cost is low, so that the deflection and the exposed arrangement of the diaphragm cloth can be radically solved.
Description
Technical field
The present invention relates to the rubber diaphragm of automobile brake chamber production technical field, particularly a kind of production technology of rubber diaphragm of automobile brake chamber.
Background technology
Rubber diaphragm of automobile brake chamber; It is a kind of critical component that plays sealing in all kinds heavy-duty car (load-carrying lorry, trailer, passenger vehicle, military car etc.) brakes, the aor brake, transmits press-brake that is widely used in; Be the rubber that is related to the fatal crass, also claim safety element.Along with automobile high-speed, comfortable, reliability (safety) require increasingly highly, the diaphragm of rubber of one of automobile brake chamber critical component is had higher requirement.
Mainly be to be divided into two kinds on the production technology of barrier film at present:
1. the most general production technology is that the Guizhou masses sulfuration process of taking as the leading factor has been promptly: diaphragm cloth is placed on the centre of 2 sizing materials, disposable sulfidization molding.The shortcoming of this technology is that the qualification rate of product is not high, and easy war proclamation of product and cloth partially in addition influence the service life and the performance of product.And this technology needs rolling out film, and production procedure is also long.
Second kind of scheme be the post forming method promptly: earlier with a part of glue and diaphragm cloth moulding female die, counterdie is put sizing material moulding upper mold section after finalizing the design again.The shortcoming of this technology is that production efficiency is not high, and the diaphragm cloth amount ratio is bigger, and manufacturing cost is than higher.
The disclosure of the Invention of publication number CN1911628A a kind of production method of rubber diaphragm for vapor chamber; Comprise and get the raw materials ready, prepare mould, once sulfuration, post-cure etc., its mold cavity temperature is 148 ℃ ± 3 ℃, and dwell pressure is 18MPA; The pressurize cure time is 2.5 minutes; Described first and second time sulfuration all is to vacuumize to suppress pressurize sulfuration after the venting 3 times, and once the patrix that uses of sulfuration and post-cure is one integrity with both sides, and the patrix that only need overturn in the sulfidation gets final product.This production method belongs to the post forming method, exists production efficiency not high, and the diaphragm cloth amount ratio is bigger, and manufacturing cost is than higher defective.
Summary of the invention
The objective of the invention is to overcome the above-mentioned defective that prior art exists; A kind of production technology of rubber diaphragm of automobile brake chamber is provided; Under the prerequisite that does not influence production efficient; Improved the qualification rate and the properties of product of product, production cost is low, has fundamentally solved the skew and the war proclamation of diaphragm cloth.The moulding barrier film upper and lower half separately simultaneously because the present invention is in addition, thus on producing without the calendering formation film, thereby reduced the waste of production procedure and sizing material.
The technical solution adopted for the present invention to solve the technical problems is: a kind of production technology of rubber diaphragm of automobile brake chamber, and described production craft step is following:
One, mould is prepared
Said mould is divided into three parts, is respectively patrix, middle mould and counterdie, the middle mould top formation upper cavity that matches with patrix, and the formation lower mode cavity matches with counterdie in middle mould bottom;
To production technology of the present invention; Mould of the present invention is designed to three-part pattern, and separately the upper and lower mould of moulding has realized that the barrier film first half and barrier film the latter half are split into type; So on producing without the calendering formation film, thereby reduced the waste of production procedure and sizing material.
Two, sizing material typing
In upper cavity and lower mode cavity, drop into sizing material, carry out primary vulcanization then and handle, the time that said primary vulcanization is handled is controlled in the 100s, and primary vulcanization is handled in the upper cavity of back and formed the barrier film first half, forms the barrier film Lower Half in the lower mode cavity;
Drop into sizing material to middle mould and counterdie when in upper cavity and lower mode cavity, dropping into the sizing material operation, the time that primary vulcanization is handled is controlled in the 100s, and cure time is long, and product can lose efficacy, and influences product quality.
Three, skeleton typing
This step is a committed step of the present invention, and the present invention takes the barrier film of moulding simultaneously upper and lower half earlier, on the barrier film Lower Half, adds diaphragm cloth again and carries out bonding typing; Diaphragm cloth can prestretched and typing like this; Can effectively avoid diaphragm cloth fold (gas leakage easily after the fold, and service life is short), final compound on during the barrier film first half diaphragm cloth can not produce skew and war proclamation; Fundamentally solve the skew and the war proclamation of diaphragm cloth, improved the qualification rate and the properties of product of product.This step is operated like this; Cooperate mould, can effectively reduce the consumption of diaphragm cloth, diaphragm cloth need not to reserve too much edge area so that fixing diaphragm cloth; And existing post forming method needs diaphragm cloth to reserve more edge area so that fixing, has reduced production cost.The time of vulcanizing treatment is controlled in the 80s for the second time, and overlong time can influence the bonding of barrier film Lower Half and diaphragm cloth, also can cause product failure, reduces product quality.For the second time during vulcanizing treatment, patrix and counterdie are still simultaneously in heating, and be preferred only to the counterdie heating, the saving energy.
Four, product approval
As preferably, the middle part of said patrix lower surface is provided with down protruding last positioning head, said in the recessed preformation die cavity that is provided with of the middle part of mould upper surface, last positioning head and preformation die cavity match; The middle part of mould lower surface is provided with down protruding following positioning head in said; The mould lower surface also is provided with down protruding diaphragm cloth positioning head in said, and the diaphragm cloth positioning head is around positioning head setting down, and the middle part of said counterdie upper surface is provided with recessed forming cavity; Said counterdie upper surface also is provided with locating slot; Locating slot encompasses the die cavity setting, and following positioning head and forming cavity match, diaphragm cloth positioning head and locating slot matched in clearance.
Last positioning head, following positioning head all play the effect of alignment pin; The diaphragm cloth positioning head, the location of diaphragm cloth when being used for vulcanizing treatment for the second time, diaphragm cloth positioning head and locating slot matched in clearance; The diaphragm cloth positioning head can block the location with the edge of diaphragm cloth; Take such mode, the barrier film selvedge has reduced the consumption of diaphragm cloth along need not than large tracts of land during the diaphragm cloth location.
As preferably, last positioning head, the cross section of positioning head is circle down, and the cross section of diaphragm cloth positioning head is an annular, and the center of forming cavity bottom is provided with the glue groove that overflows, and the glue groove that overflows is an annular.In order to guarantee concentricity, last positioning head, the cross section of positioning head is circle down, and the glue groove that overflows is to be convenient to glue temporary when too much.
As preferably, primary vulcanization handles, for the second time vulcanizing treatment and for the third time the temperature of vulcanizing treatment all be controlled at 150 ~ 180 ℃, dwell pressure is 15 ~ 18Mpa.
The invention has the beneficial effects as follows:
1, under the prerequisite that does not influence production efficient, improved the qualification rate and the properties of product of product, production cost is low, has fundamentally solved the skew and the war proclamation of diaphragm cloth.
2, the moulding barrier film upper and lower half separately simultaneously because the present invention is, thus on producing without the calendering formation film, thereby reduced the waste of production procedure and sizing material.
Description of drawings
Fig. 1 is the structural representation that primary vulcanization of the present invention is handled;
Fig. 2 is the present invention's structural representation of vulcanizing treatment for the second time;
Fig. 3 is the present invention's structural representation of vulcanizing treatment for the third time.
Among the figure: 1, patrix, 2, middle mould, 3, counterdie, 4, go up positioning head, 5, the preformation die cavity, 6, positioning head down, 7, the diaphragm cloth positioning head, 8, forming cavity, 9, locating slot, 10, the glue groove that overflows, 11, the barrier film first half, 12, the barrier film Lower Half, 13, diaphragm cloth.
The specific embodiment
Pass through specific embodiment below, and combine accompanying drawing, technical scheme of the present invention is further specified.
Embodiment 1
A kind of production technology of rubber diaphragm of automobile brake chamber, described production craft step is following:
One, mould is prepared
Said mould is divided into three parts, is respectively patrix 1, middle mould 2 and counterdie 3, the middle mould 2 tops formation upper cavity that matches with patrix 1, and the formation lower mode cavity matches with counterdie 3 in middle mould 2 bottoms; The middle part of said patrix 1 lower surface has protruding last positioning head 4 down, the recessed preformation die cavity 5 that the middle part of said middle mould 2 upper surfaces has, and last positioning head 4 matches with preformation die cavity 5; The middle part of mould 2 lower surfaces has protruding following positioning head 6 down in said; Mould 2 lower surfaces also have protruding diaphragm cloth positioning head 7 down in said, and diaphragm cloth positioning head 7 is around positioning head 6 settings down, and the middle part of said counterdie 3 upper surfaces has recessed forming cavity 8; The center of forming cavity 8 bottoms has excessive glue groove 10; The glue groove 10 that overflows is an annular, and said counterdie 3 upper surfaces also have locating slot 9, and locating slot 9 encompasses die cavity 8 and is provided with; Following positioning head 6 matches with forming cavity 8, diaphragm cloth positioning head 7 and locating slot 9 matched in clearance.Last positioning head 4, the cross section of positioning head 6 is circle down, and the cross section of diaphragm cloth positioning head 7 is an annular.
Two, sizing material typing
In upper cavity and lower mode cavity, drop into sizing material; Carry out primary vulcanization then and handle (accompanying drawing 1); The time that said primary vulcanization is handled is controlled in the 100s, and primary vulcanization is handled in the upper cavity of back and formed the barrier film first half 11, forms barrier film Lower Half 12 in the lower mode cavity;
Three, skeleton typing
Four, product approval
After step 3 finished, mould 2 in removing lumped together patrix 1 and counterdie 3; The said barrier film first half 11 is covered on the diaphragm cloth 13 and barrier film Lower Half 12 of bonding typing; Carry out then for the third time that vulcanizing treatment gets product (accompanying drawing 3), the time of said vulcanizing treatment for the third time is controlled at 300s, for the third time after the vulcanizing treatment; Open mould, take out product and get final product.
Primary vulcanization handles, for the second time vulcanizing treatment and for the third time the temperature of vulcanizing treatment all be controlled at 180 ℃, dwell pressure is 15Mpa.
A kind of production technology of rubber diaphragm of automobile brake chamber, described production craft step is following:
One, mould is prepared
Said mould is divided into three parts, is respectively patrix 1, middle mould 2 and counterdie 3, the middle mould 2 tops formation upper cavity that matches with patrix 1, and the formation lower mode cavity matches with counterdie 3 in middle mould 2 bottoms; The middle part of said patrix 1 lower surface has protruding last positioning head 4 down, the recessed preformation die cavity 5 that the middle part of said middle mould 2 upper surfaces has, and last positioning head 4 matches with preformation die cavity 5; The middle part of mould 2 lower surfaces has protruding following positioning head 6 down in said; Mould 2 lower surfaces also have protruding diaphragm cloth positioning head 7 down in said, and diaphragm cloth positioning head 7 is around positioning head 6 settings down, and the middle part of said counterdie 3 upper surfaces has recessed forming cavity 8; The center of forming cavity 8 bottoms has excessive glue groove 10; The glue groove 10 that overflows is an annular, and said counterdie 3 upper surfaces also have locating slot 9, and locating slot 9 encompasses die cavity 8 and is provided with; Following positioning head 6 matches with forming cavity 8, diaphragm cloth positioning head 7 and locating slot 9 matched in clearance.Last positioning head 4, the cross section of positioning head 6 is circle down, and the cross section of diaphragm cloth positioning head 7 is an annular.
Two, sizing material typing
In upper cavity and lower mode cavity, drop into sizing material, carry out primary vulcanization then and handle, the time that said primary vulcanization is handled is controlled in the 100s, and primary vulcanization is handled in the upper cavity of back and formed the barrier film first half 11, forms barrier film Lower Half 12 in the lower mode cavity;
Three, skeleton typing
Four, product approval
After step 3 finished, mould 2 in removing lumped together patrix 1 and counterdie 3; The said barrier film first half 11 is covered on the diaphragm cloth 13 and barrier film Lower Half 12 of bonding typing; Carry out then for the third time that vulcanizing treatment gets product, the time of said vulcanizing treatment for the third time is controlled at 600s, for the third time after the vulcanizing treatment; Open mould, take out product and get final product.
Primary vulcanization handles, for the second time vulcanizing treatment and for the third time the temperature of vulcanizing treatment all be controlled at 150 ℃, dwell pressure is 18Mpa.
A kind of production technology of rubber diaphragm of automobile brake chamber, described production craft step is following:
One, mould is prepared
Said mould is divided into three parts, is respectively patrix 1, middle mould 2 and counterdie 3, the middle mould 2 tops formation upper cavity that matches with patrix 1, and the formation lower mode cavity matches with counterdie 3 in middle mould 2 bottoms; The middle part of said patrix 1 lower surface has protruding last positioning head 4 down, the recessed preformation die cavity 5 that the middle part of said middle mould 2 upper surfaces has, and last positioning head 4 matches with preformation die cavity 5; The middle part of mould 2 lower surfaces has protruding following positioning head 6 down in said; Mould 2 lower surfaces also have protruding diaphragm cloth positioning head 7 down in said, and diaphragm cloth positioning head 7 is around positioning head 6 settings down, and the middle part of said counterdie 3 upper surfaces has recessed forming cavity 8; The center of forming cavity 8 bottoms has excessive glue groove 10; The glue groove 10 that overflows is an annular, and said counterdie 3 upper surfaces also have locating slot 9, and locating slot 9 encompasses die cavity 8 and is provided with; Following positioning head 6 matches with forming cavity 8, diaphragm cloth positioning head 7 and locating slot 9 matched in clearance.Last positioning head 4, the cross section of positioning head 6 is circle down, and the cross section of diaphragm cloth positioning head 7 is an annular.
Two, sizing material typing
In upper cavity and lower mode cavity, drop into sizing material, carry out primary vulcanization then and handle, the time that said primary vulcanization is handled is controlled in the 100s, and primary vulcanization is handled in the upper cavity of back and formed the barrier film first half 11, forms barrier film Lower Half 12 in the lower mode cavity;
Three, skeleton typing
Four, product approval
After step 3 finished, mould 2 in removing lumped together patrix 1 and counterdie 3; The said barrier film first half 11 is covered on the diaphragm cloth 13 and barrier film Lower Half 12 of bonding typing; Carry out then for the third time that vulcanizing treatment gets product, the time of said vulcanizing treatment for the third time is controlled at 400s, for the third time after the vulcanizing treatment; Open mould, take out product and get final product.
Primary vulcanization handles, for the second time vulcanizing treatment and for the third time the temperature of vulcanizing treatment all be controlled at 160 ℃, dwell pressure is 18Mpa.
Adopt sulfuration process and the post forming method mentioned in the background technology of the present invention to produce rubber diaphragm of automobile brake chamber; The qualification rate of product is 80 ~ 85%, and the service life of product is 1,000,000 times (detecting by QC/T 790-2007 brake chamber performance requirement and bench test method).
Adopt technology of the present invention, the qualification rate of product is 95 ~ 98%, and the service life of product is 1,500,000 times (detecting by QC/T 790-2007 brake chamber performance requirement and bench test method).The present invention has reduced the consumption of diaphragm cloth in addition, has reduced production cost.
Above-described embodiment is a kind of preferable scheme of the present invention, is not that the present invention is done any pro forma restriction, under the prerequisite that does not exceed the technical scheme that claim puts down in writing, also has other variant and remodeling.
Claims (4)
1. the production technology of a rubber diaphragm of automobile brake chamber, it is characterized in that: described production craft step is following:
One, mould is prepared
Said mould is divided into three parts, is respectively patrix (1), middle mould (2) and counterdie (3), the middle mould top formation upper cavity that matches with patrix, and the formation lower mode cavity matches with counterdie in middle mould bottom;
Two, sizing material typing
In upper cavity and lower mode cavity, drop into sizing material; Carrying out primary vulcanization then handles; The time that said primary vulcanization is handled is controlled in the 100s, and primary vulcanization is handled in the upper cavity of back and formed the barrier film first half (11), forms barrier film Lower Half (12) in the lower mode cavity;
Three, skeleton typing
Step 2 is opened mould after finishing, and adds diaphragm cloth (13) at counterdie; Said diaphragm cloth is covered on the barrier film Lower Half; Matched moulds carries out second time vulcanizing treatment then and makes diaphragm cloth and the bonding typing of barrier film Lower Half, and the time of vulcanizing treatment said second time is controlled in the 80s;
Four, product approval
Step 3 is removed middle mould after finishing, and upper die and lower die are lumped together; The said barrier film first half is covered on the diaphragm cloth and barrier film Lower Half of bonding typing; Carry out then for the third time that vulcanizing treatment gets product, the time of said vulcanizing treatment for the third time is controlled at 300s ~ 600s, for the third time after the vulcanizing treatment; Open mould, take out product and get final product.
2. the production technology of rubber diaphragm of automobile brake chamber according to claim 1; It is characterized in that: the middle part of said patrix lower surface is provided with down protruding last positioning head (4); The recessed preformation die cavity (5) that the middle part of mould upper surface is provided with in said, last positioning head and preformation die cavity match; The middle part of mould lower surface is provided with down protruding following positioning head (6) in said; The mould lower surface also is provided with down protruding diaphragm cloth positioning head (7) in said, and the diaphragm cloth positioning head is around positioning head setting down, and the middle part of said counterdie upper surface is provided with recessed forming cavity (8); Said counterdie upper surface also is provided with locating slot (9); Locating slot encompasses the die cavity setting, and following positioning head and forming cavity match, diaphragm cloth positioning head and locating slot matched in clearance.
3. the production technology of rubber diaphragm of automobile brake chamber according to claim 2; It is characterized in that: the cross section of going up positioning head, following positioning head is circle; The cross section of diaphragm cloth positioning head is an annular, and the center of forming cavity bottom is provided with the glue groove (10) that overflows, and the glue groove that overflows is an annular.
4. according to the production technology of claim 1 or 2 or 3 described rubber diaphragm of automobile brake chamber; It is characterized in that: primary vulcanization handles, for the second time vulcanizing treatment and for the third time the temperature of vulcanizing treatment all be controlled at 150 ~ 180 ℃, dwell pressure is 15 ~ 18Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210038464.2A CN102581997B (en) | 2012-02-21 | 2012-02-21 | Production process of rubber diaphragm of automobile brake chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210038464.2A CN102581997B (en) | 2012-02-21 | 2012-02-21 | Production process of rubber diaphragm of automobile brake chamber |
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| CN102581997A true CN102581997A (en) | 2012-07-18 |
| CN102581997B CN102581997B (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210038464.2A Active CN102581997B (en) | 2012-02-21 | 2012-02-21 | Production process of rubber diaphragm of automobile brake chamber |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102785308A (en) * | 2012-08-31 | 2012-11-21 | 宁波乔士橡塑有限公司 | Once-shaped forming die of air chamber rubber diaphragm and forming process |
| CN104260244A (en) * | 2014-08-21 | 2015-01-07 | 宁国市海天力工业发展有限公司 | Air chamber rubber diaphragm sulfuration module |
| CN104816406A (en) * | 2015-04-09 | 2015-08-05 | 浙江宏利汽车零部件有限公司 | Top rubber sulfuration die |
| CN105150437A (en) * | 2015-10-08 | 2015-12-16 | 厦门正新橡胶工业有限公司 | Agricultural tyre mould structure |
| CN105835283A (en) * | 2016-03-25 | 2016-08-10 | 德特威勒密封技术（安徽）有限公司 | Production process of rubber diaphragm in automobile brake air chamber |
| CN106799801A (en) * | 2017-01-20 | 2017-06-06 | 无锡市万丰橡胶有限公司 | A kind of secondary preforming sulfurizing mould of rubber and sulfuration process |
| CN110815658A (en) * | 2019-11-19 | 2020-02-21 | 中国飞机强度研究所 | Vulcanizing mold of curved surface pulling and pressing pad |
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| CN101987491A (en) * | 2010-11-12 | 2011-03-23 | 宁国市海天力工业发展有限公司 | Rubber diaphragm circulation secondary vulcanizing device of automobile brake air chamber |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102785308A (en) * | 2012-08-31 | 2012-11-21 | 宁波乔士橡塑有限公司 | Once-shaped forming die of air chamber rubber diaphragm and forming process |
| CN102785308B (en) * | 2012-08-31 | 2015-07-08 | 宁波乔士橡塑有限公司 | Once-shaped forming die of air chamber rubber diaphragm and forming process |
| CN104260244A (en) * | 2014-08-21 | 2015-01-07 | 宁国市海天力工业发展有限公司 | Air chamber rubber diaphragm sulfuration module |
| CN104816406A (en) * | 2015-04-09 | 2015-08-05 | 浙江宏利汽车零部件有限公司 | Top rubber sulfuration die |
| CN105150437A (en) * | 2015-10-08 | 2015-12-16 | 厦门正新橡胶工业有限公司 | Agricultural tyre mould structure |
| CN105835283A (en) * | 2016-03-25 | 2016-08-10 | 德特威勒密封技术（安徽）有限公司 | Production process of rubber diaphragm in automobile brake air chamber |
| CN106799801A (en) * | 2017-01-20 | 2017-06-06 | 无锡市万丰橡胶有限公司 | A kind of secondary preforming sulfurizing mould of rubber and sulfuration process |
| CN110815658A (en) * | 2019-11-19 | 2020-02-21 | 中国飞机强度研究所 | Vulcanizing mold of curved surface pulling and pressing pad |
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|---|---|
| CN102581997B (en) | 2014-03-26 |
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Address after: 315400 ce10, Far East Industrial City, Yuyao, Ningbo, Zhejiang Province Patentee after: Zhejiang Fengmao Technology Co.,Ltd. Address before: 315400 ce10, Far East Industrial City, Yuyao, Ningbo, Zhejiang Province Patentee before: Ningbo Fengmao Far-East Rubber Co.,Ltd. |