CN112895244A - Rubber joint vulcanization process - Google Patents
Rubber joint vulcanization process Download PDFInfo
- Publication number
- CN112895244A CN112895244A CN202110033002.0A CN202110033002A CN112895244A CN 112895244 A CN112895244 A CN 112895244A CN 202110033002 A CN202110033002 A CN 202110033002A CN 112895244 A CN112895244 A CN 112895244A
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- CN
- China
- Prior art keywords
- rubber
- rubber joint
- type cylinder
- mold
- vulcanizing
- 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.)
- Pending
Links
- 238000004073 vulcanization Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 7
- 238000012797 qualification Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B29C35/002—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/24—Pipe joints or couplings
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The invention discloses a rubber joint vulcanization process, which comprises the following operation steps: s1, preparing a rubber joint type cylinder; s2, placing the product mold into a vulcanizing machine and fixing, and setting the temperature in the vulcanizing machine; s3, placing a rubber mold into the rubber joint type cylinder, wherein a plurality of linear grooves are uniformly formed in the circumferential direction of the outer wall of the rubber mold; s4, after the temperature of the vulcanizing machine is raised, placing the rubber joint type cylinder with the rubber mold into a product mold of the vulcanizing machine; s5, closing the die, and inflating the interior of the rubber die at high pressure to enable the outer wall of the rubber die to completely support the inner wall of the rubber joint type cylinder, and enabling the outer wall of the rubber joint type cylinder to be attached to the inner wall of the product die; s6, vulcanizing by a vulcanizing machine; at the moment of charging 30kg of high-pressure air, the air can be quickly discharged from a channel enclosed between each linear groove and the rubber joint type cylinder, the problems of flaws and defects of the inner wall of a product are perfectly solved, and the product qualification rate is improved from the original 80% to the current 100%.
Description
Technical Field
The invention relates to the technical field of vulcanization of rubber products, in particular to a rubber joint vulcanization process.
Background
The rubber joint is used as main equipment in water supply and drainage engineering, and the industry is unprecedentedly developed along with the implementation of projects such as south-to-north water transfer and the like in recent years. As a main device in the water supply and drainage pipeline, the rubber joint has to have good elasticity, vibration and noise reduction and small mass.
The rubber joint needs to be vulcanized in the production process. Vulcanization is an important link in the production of the rubber joint, and the quality of the vulcanization process directly affects the quality of the rubber joint. The vulcanization conditions are mainly accelerator, temperature, reactants and pressure. When the rubber joint is placed into a vulcanizing tank, the rubber can be subjected to chemical reaction through catalysis of the accelerator and high temperature, the rubber is molded in a vulcanizing mold, and the rubber joint generated by different reactions according to the rubber types has different characteristics.
The vulcanization is also a main process for forming the rubber joint, the rubber joint is formed by combining rubber sheets layer by layer before vulcanization and is not a whole, the spherical part of the rubber joint becomes a closely-connected whole after vulcanization, and various performances of the rubber joint are greatly improved.
In the vulcanization process, a rubber mold is firstly arranged in the rubber joint, then 30kg of compressed air is filled into the rubber mold to support the inside of the rubber joint, and then vulcanization is carried out, but the inside of the rubber joint is smooth, the contact position of the inner wall of the rubber joint and the outer wall of the rubber mold is easy to trap air, the trapped air cannot be discharged, the defect appears on the inner wall of the vulcanized rubber joint, the phenomenon looks like shortage, and the rubber cannot be perfectly vulcanized due to the fact that air exists in the inside of the rubber joint.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a rubber joint vulcanization process which can perfectly and completely discharge air between the inner wall of a product and the outer wall of a rubber mold and solve the problem that the rubber joint vulcanization is easy to generate defects.
A rubber joint vulcanization process comprises the following operation steps:
s1, preparing a rubber joint type cylinder;
s2, placing the product mold into a vulcanizing machine and fixing, and setting the temperature in the vulcanizing machine;
s3, placing a rubber mold into the rubber joint type cylinder, wherein a plurality of linear grooves are uniformly formed in the circumferential direction of the outer wall of the rubber mold, and the maximum outer diameter of the rubber mold is smaller than the minimum inner diameter of the rubber joint type cylinder;
s4, after the temperature of the vulcanizing machine is raised, placing the rubber joint type cylinder with the rubber mold into a product mold of the vulcanizing machine;
s5, closing the die, and inflating the interior of the rubber die at high pressure to enable the outer wall of the rubber die to completely support the inner wall of the rubber joint type cylinder, and enabling the outer wall of the rubber joint type cylinder to be attached to the inner wall of the product die;
and S6, carrying out vulcanization operation by the vulcanizer.
Preferably, in step S1, the rubber joint type tube is formed by first stacking a plurality of rubber sheets, then positioning a bead ring at both ends, and then turning up the cord.
Preferably, the rubber sheets at the two ends of the rubber joint type cylinder have the same thickness and are greater than the thickness of the rubber sheet in the middle.
Preferably, in the step S2, the temperature in the vulcanizer is set to 147 ℃ to 153 ℃.
Preferably, in the step S3, the rubber mold has a cylindrical shape, and the linear grooves are provided parallel to a central axis of the rubber mold.
Preferably, the linear grooves are provided with 16 to 20.
Preferably, the rubber mold has a length greater than that of the rubber nipple type cylinder.
Preferably, in the step S5, the high-pressure gas is 30kg high-pressure gas.
Preferably, in the step S6, the time for the vulcanization operation is 30 min.
The invention has the beneficial effects that:
in the vulcanization process, air between the inner wall of the rubber joint type cylinder and the outer wall of the rubber mold can be rapidly discharged from a channel enclosed between each linear groove and the rubber joint type cylinder at the moment of filling 30kg of high-pressure air into the rubber mold, the problems of flaws and defects of the inner wall of a product are perfectly solved, the product qualification rate is improved to be 100% from the original 80%, and after vulcanization, the linear grooves in the outer wall of the rubber mold are printed on the inner wall of the rubber joint type cylinder after mold closing to form linear convex strips.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic view showing a rubber joint type cartridge in an embodiment of the present invention;
fig. 2 is a sectional view of the rubber joint type cylinder shown in fig. 1;
FIG. 3 is a schematic structural view of a rubber mold in an embodiment of the present invention;
in the attached figure, 1-rubber joint type cylinder, 2-rubber mold, 3-linear groove and 4-linear convex strip.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
A rubber joint vulcanization process comprises the following operation steps:
s1, preparing a rubber joint type cylinder 1; specifically, the preparation can be carried out according to the following steps:
(1) mixing the proportioned rubber raw materials according to a rubber mixing standard;
(2) discharging the mixed rubber material, and storing the rubber material in a room with a constant temperature of 16 ℃ for 12 hours;
(3) cutting and blanking according to the required size standard;
(4) molding the cut rubber sheet; it should be noted that:
in this embodiment, the rubber joint type cylinder 1 is formed by first stacking a plurality of layers of rubber sheets, then placing steel wire rings at two ends for positioning, and turning and wrapping the steel wire rings by cord fabric, wherein the rubber sheets at the two ends of the rubber joint type cylinder 1 have the same thickness and are larger than the thickness of the rubber sheet in the middle;
furthermore, the bottom layer and the top layer are respectively a rubber sheet with the thickness of 2mm, the middle part is provided with 6 rubber sheets with the thickness of 1mm, and a steel wire ring with the thickness of 5mm is placed at the position of 30mm at the two ends and is turned up by utilizing the cord fabric and positioned.
S2, placing the product mold into a vulcanizing machine and fixing, and setting the temperature in the vulcanizing machine to be 147-153 ℃;
s3, as shown in figure 1, placing the rubber mold 2 into the rubber joint type cylinder 1, as shown in figure 3, uniformly arranging a plurality of linear grooves 3 on the outer wall of the rubber mold 2 in the circumferential direction, wherein the maximum outer diameter of the rubber mold 2 is smaller than the minimum inner diameter of the rubber joint type cylinder 1, so as to ensure that the rubber mold 2 can be smoothly placed into the rubber joint type cylinder 1; further, the rubber mold 2 is preferably cylindrical, and the linear groove 3 is provided parallel to the central axis of the rubber mold 2; the number of the linear grooves 3 is preferably 16-20, so that the gas can be discharged quickly, and the specific number can be set according to the model size of the rubber joint which is actually produced;
s4, after the temperature of the vulcanizing machine is raised, placing the rubber joint type cylinder 1 with the rubber mold 2 into a product mold of the vulcanizing machine;
s5, closing the die, and inflating the interior of the rubber die 2 at high pressure of 30kg to ensure that the outer wall of the rubber die 2 completely supports the inner wall of the rubber joint type cylinder 1 and the outer wall of the rubber joint type cylinder 1 is attached to the inner wall of the product die; it should be noted that the length of the rubber mold 2 is greater than that of the rubber joint type cylinder 1, and by such arrangement, when the rubber mold 2 is attached to the rubber joint type cylinder 1, a channel with two open ends can be enclosed between the linear groove 3 and the rubber joint type cylinder 1, so that gas can be rapidly discharged from the channel, and gas pocket is prevented from being generated, thereby causing the defect of the inner wall of the product;
s6, vulcanizing for 30min by a vulcanizing machine, and keeping the temperature at 147-153 ℃.
In this embodiment, during the vulcanization process, air between the inner wall of the rubber joint type cylinder 1 and the outer wall of the rubber mold 2 can be rapidly discharged from the passage enclosed between each linear groove 3 and the rubber joint type cylinder 1 at the moment of charging 30kg of high-pressure air into the rubber mold 2, so that the problems of flaws and defects of the inner wall of the product are perfectly solved, the product yield is improved from the original 80% to the current 100%, and after vulcanization, as shown in fig. 2, the linear grooves 3 on the outer wall of the rubber mold 2 are printed on the inner wall of the rubber joint type cylinder 1 after mold closing to form linear raised lines 4.
In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, system, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, systems, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (9)
1. A rubber joint vulcanization process is characterized in that: the method comprises the following operation steps:
s1, preparing a rubber joint type cylinder;
s2, placing the product mold into a vulcanizing machine and fixing, and setting the temperature in the vulcanizing machine;
s3, placing a rubber mold into the rubber joint type cylinder, wherein a plurality of linear grooves are uniformly formed in the circumferential direction of the outer wall of the rubber mold, and the maximum outer diameter of the rubber mold is smaller than the minimum inner diameter of the rubber joint type cylinder;
s4, after the temperature of the vulcanizing machine is raised, placing the rubber joint type cylinder with the rubber mold into a product mold of the vulcanizing machine;
s5, closing the die, and inflating the interior of the rubber die at high pressure to enable the outer wall of the rubber die to completely support the inner wall of the rubber joint type cylinder, and enabling the outer wall of the rubber joint type cylinder to be attached to the inner wall of the product die;
and S6, carrying out vulcanization operation by the vulcanizer.
2. A process for vulcanizing a rubber joint according to claim 1, characterized in that: in the step S1, the rubber joint type cylinder is formed by firstly overlapping a plurality of layers of rubber sheets, then placing steel wire rings at two ends for positioning and then turning and wrapping the cord fabric.
3. A process for vulcanizing a rubber joint according to claim 2, characterized in that: the rubber sheets at the two ends of the rubber joint type cylinder have the same thickness and are larger than the thickness of the rubber sheet in the middle.
4. A process for vulcanizing a rubber joint according to claim 1, characterized in that: in the step S2, the temperature in the vulcanizer is set to 147-153 ℃.
5. A process for vulcanizing a rubber joint according to claim 1, characterized in that: in the step S3, the rubber mold is cylindrical, and the linear grooves are arranged parallel to the central axis of the rubber mold.
6. A process for vulcanizing a rubber joint according to claim 5, wherein: 16-20 linear grooves are arranged.
7. The process for vulcanizing a rubber joint according to claim 6, wherein: the length of the rubber mold is greater than that of the rubber joint type cylinder.
8. The process for vulcanizing a rubber joint according to claim 6, wherein: in step S5, the high-pressure inflation is specifically 30kg of high-pressure air.
9. The process for vulcanizing a rubber joint according to claim 6, wherein: in step S6, the time for the vulcanization operation is 30 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110033002.0A CN112895244A (en) | 2021-01-11 | 2021-01-11 | Rubber joint vulcanization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110033002.0A CN112895244A (en) | 2021-01-11 | 2021-01-11 | Rubber joint vulcanization process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112895244A true CN112895244A (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110033002.0A Pending CN112895244A (en) | 2021-01-11 | 2021-01-11 | Rubber joint vulcanization process |
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| CN (1) | CN112895244A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB800509A (en) * | 1956-04-05 | 1958-08-27 | Goodyear Tire & Rubber | Curing bag for moulding tyres |
| JPH06143288A (en) * | 1992-11-04 | 1994-05-24 | Sumitomo Rubber Ind Ltd | Tire vulcanizing bladder |
| JP2001018227A (en) * | 1999-07-06 | 2001-01-23 | Yokohama Rubber Co Ltd:The | Method for vulcanizing pneumatic bias tire |
| CN101468520A (en) * | 2007-12-29 | 2009-07-01 | 青岛四方车辆研究所有限公司 | Method for producing air spring large capsule |
| CN101903148A (en) * | 2007-12-17 | 2010-12-01 | 横滨橡胶株式会社 | Tire vulcanizing bladder, tire vulcanizing-forming method, and pneumatic tire |
| CN105711073A (en) * | 2014-12-22 | 2016-06-29 | 东洋橡胶工业株式会社 | A groove forming device for a sheet-shaped part and a groove forming method |
| CN106374397A (en) * | 2016-11-09 | 2017-02-01 | 重庆联邦中北电缆股份有限公司 | Preparation method of crosslinked polyethylene cable connector |
| CN207942608U (en) * | 2018-02-12 | 2018-10-09 | 青岛森昊减震科技有限公司 | A kind of leather bag sulfurizing mould of air spring |
| JP2018176505A (en) * | 2017-04-10 | 2018-11-15 | 横浜ゴム株式会社 | Method for manufacturing pneumatic tire and vulcanization bladder for tire |
| CN110359421A (en) * | 2019-07-30 | 2019-10-22 | 沈阳化大高分子材料研发中心有限公司 | A kind of long life high-voltage water blockoff rubber pneumatic bag and production technology |
| CN212123892U (en) * | 2020-05-08 | 2020-12-11 | 浙江威格尔传动股份有限公司 | Rubber vulcanization mould |
-
2021
- 2021-01-11 CN CN202110033002.0A patent/CN112895244A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB800509A (en) * | 1956-04-05 | 1958-08-27 | Goodyear Tire & Rubber | Curing bag for moulding tyres |
| JPH06143288A (en) * | 1992-11-04 | 1994-05-24 | Sumitomo Rubber Ind Ltd | Tire vulcanizing bladder |
| JP2001018227A (en) * | 1999-07-06 | 2001-01-23 | Yokohama Rubber Co Ltd:The | Method for vulcanizing pneumatic bias tire |
| CN101903148A (en) * | 2007-12-17 | 2010-12-01 | 横滨橡胶株式会社 | Tire vulcanizing bladder, tire vulcanizing-forming method, and pneumatic tire |
| CN101468520A (en) * | 2007-12-29 | 2009-07-01 | 青岛四方车辆研究所有限公司 | Method for producing air spring large capsule |
| CN105711073A (en) * | 2014-12-22 | 2016-06-29 | 东洋橡胶工业株式会社 | A groove forming device for a sheet-shaped part and a groove forming method |
| CN106374397A (en) * | 2016-11-09 | 2017-02-01 | 重庆联邦中北电缆股份有限公司 | Preparation method of crosslinked polyethylene cable connector |
| JP2018176505A (en) * | 2017-04-10 | 2018-11-15 | 横浜ゴム株式会社 | Method for manufacturing pneumatic tire and vulcanization bladder for tire |
| CN207942608U (en) * | 2018-02-12 | 2018-10-09 | 青岛森昊减震科技有限公司 | A kind of leather bag sulfurizing mould of air spring |
| CN110359421A (en) * | 2019-07-30 | 2019-10-22 | 沈阳化大高分子材料研发中心有限公司 | A kind of long life high-voltage water blockoff rubber pneumatic bag and production technology |
| CN212123892U (en) * | 2020-05-08 | 2020-12-11 | 浙江威格尔传动股份有限公司 | Rubber vulcanization mould |
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Application publication date: 20210604 |
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