CN103538182A - Vulcanization method of silicone rubber sealing articles - Google Patents
Vulcanization method of silicone rubber sealing articles Download PDFInfo
- Publication number
- CN103538182A CN103538182A CN201310511173.5A CN201310511173A CN103538182A CN 103538182 A CN103538182 A CN 103538182A CN 201310511173 A CN201310511173 A CN 201310511173A CN 103538182 A CN103538182 A CN 103538182A
- Authority
- CN
- China
- Prior art keywords
- silicone rubber
- rubber seal
- goods
- seal goods
- mould
- 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.)
- Granted
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a vulcanization process, in particular to a vulcanization method of silicone rubber sealing articles. The vulcanization method comprises the following steps of: putting a non-vulcanized semi-finished product silicone rubber sealing article in a die, putting the die in a gap between two layers of hot plates, enabling a vacuumizing function to vacuumize the sealed space between two flat plates into a vacuum state, and then carrying out vulcanization. The method effectively reduces the probabilities of article rotting and sticking to the die after vulcanization; and therefore, the rejection rate of vulcanized products is greatly reduced.
Description
Technical field
The present invention relates to a kind of sulfuration process, especially a kind of vulcanization process of silicone rubber seal goods.
Background technology
At present, existing silicone rubber seal goods are all generally to complete on vulcanizing press.Silica gel product sizing material is positioned over after mould, moment at matched moulds can be brought many air into, and air can not combine together with silica gel materials, if by these air ventings not out, will cause silica gel product moulding rear surface to produce bubble, to this general processing method, be: after matched moulds pressurization, mould is opened, so that the Bas Discharged in mould, this process is called exhaust.Because the Mooney viscosity of silicon rubber is too low, if adopt conventional setting parameter in earlier stage in sulfuration, exhaust 1-2 time, silicon rubber is in exhaust pressurized process, will overflow mold cavity, thereby make to have spilt into outside die cavity by the silicon rubber in mold cavity, in sulfidation, silicon rubber in die cavity will correspondingly reduce, in die cavity, the pressure of local silicon rubber will reduce, pressure in silicon rubber vulcanization three elements reduces, even if having enough curing temperatures and time, silicon rubber can not vulcanize normally yet, cause vulcanizing rear goods and very easily occur rotten meat, the phenomenons such as sticking to mould.
Summary of the invention
The object of the invention is to overcome the above-mentioned defect existing in existing silicon rubber vulcanization process, the vulcanization process of silicone rubber seal goods has been proposed, effectively reduce the probability that after sulfuration, the rotten meat of goods, sticking to mould occur, thereby greatly reduced the percent defective of vulcanized article.
The present invention adopts following technical scheme to realize: a kind of vulcanization process of silicone rubber seal goods, comprises the following steps:
(1) unvulcanized semi-finished product silicone rubber seal goods are packed in mould, mould is placed in to the gap between two-layer hot plate, in hydraulic cylinder, lead to hydraulic medium, the main frame rate of climb is set as to 100%, plunger promotes movable platform and hot plate moves upward, to mould, topmost apart from upper hot plate 0.5-1.0cm place, to leave certain space, carry out exhaust;
(2) open and to vacuumize function, by the state that is evacuated of the seal cavity between two flat boards;
(3) locking Speed Setting is 30-50%, and promotes the movable dull and stereotyped semi-finished product silicone rubber seal goods that compress, and compresses after silicone rubber seal goods, and sulfuration is opened; Setting curing temperature is 170-175 ℃, and cure time is 300-360 second;
In sulfidation, in heated plate, lead to heat medium, thereby make silicone rubber seal goods obtain the required temperature of sulfidation, by above-mentioned curing cycle, the sulfuration of silicone rubber seal goods is complete;
(4) hydraulic medium in hydraulic cylinder is got rid of, moving platen slow decreasing, takes out silicone rubber seal goods.
The invention has the beneficial effects as follows: by vulcanizing the setting of front period parameters, effectively reduce the probability of the rear rotten meat of goods of sulfuration, sticking to mould appearance, thereby reduced greatly the percent defective of vulcanized article.
The specific embodiment
Below in conjunction with embodiment, the present invention will be further described.
The vulcanization process that the present invention includes silicone rubber seal goods, the method mainly comprises the following steps:
(1) unvulcanized semi-finished product silicone rubber seal goods are packed in mould, mould is placed in to the gap between two-layer hot plate, in hydraulic cylinder, lead to hydraulic medium, such as oil or water, the main frame rate of climb is set as to 100%, plunger promotes movable platform and hot plate moves upward, to distance upper hot plate 0.5-1.0cm place, mould the top;
(2) open and to vacuumize function, by the state that is evacuated of the seal cavity between two flat boards;
(3) locking Speed Setting is 30-50%, and promotes the movable dull and stereotyped semi-finished product silicone rubber seal goods that compress, and compresses after silicone rubber seal goods, and sulfuration is opened; Setting curing temperature is 170-175 ℃, and cure time is 300-360 second;
In sulfidation, in heated plate, lead to heat medium, thereby make silicone rubber seal goods obtain the required temperature of sulfidation, by above-mentioned curing cycle, the sulfuration of silicone rubber seal goods is complete;
(4) hydraulic medium in hydraulic cylinder is got rid of, moving platen slow decreasing, takes out silicone rubber seal goods.
Claims (1)
1. a vulcanization process for silicone rubber seal goods, is characterized in that comprising the following steps:
(1) unvulcanized semi-finished product silicone rubber seal goods are packed in mould, mould is placed in to the gap between two-layer hot plate, in hydraulic cylinder, lead to hydraulic medium, the main frame rate of climb is set as to 100%, plunger promotes movable platform and hot plate moves upward, to mould, topmost apart from upper hot plate 0.5-1.0cm place, to leave certain space, carry out exhaust;
(2) open and to vacuumize function, by the state that is evacuated of the seal cavity between two flat boards;
(3) locking Speed Setting is 30-50%, and promotes the movable dull and stereotyped semi-finished product silicone rubber seal goods that compress, and compresses after silicone rubber seal goods, and sulfuration is opened; Setting curing temperature is 170-175 ℃, and cure time is 300-360 second;
In sulfidation, in heated plate, lead to heat medium, thereby make silicone rubber seal goods obtain the required temperature of sulfidation, by above-mentioned curing cycle, the sulfuration of silicone rubber seal goods is complete;
(4) hydraulic medium in hydraulic cylinder is got rid of, moving platen slow decreasing, takes out silicone rubber seal goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310511173.5A CN103538182B (en) | 2013-10-25 | 2013-10-25 | The vulcanization process of silicone rubber seal goods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310511173.5A CN103538182B (en) | 2013-10-25 | 2013-10-25 | The vulcanization process of silicone rubber seal goods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103538182A true CN103538182A (en) | 2014-01-29 |
| CN103538182B CN103538182B (en) | 2016-08-17 |
Family
ID=49962220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310511173.5A Expired - Fee Related CN103538182B (en) | 2013-10-25 | 2013-10-25 | The vulcanization process of silicone rubber seal goods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103538182B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2273246Y (en) * | 1996-06-19 | 1998-01-28 | 大连第一锻压机械设备厂 | Vacuum-pumping flat-plate vulcanizer |
| CN102431103A (en) * | 2011-12-20 | 2012-05-02 | 厦门市金汤橡塑有限公司 | Mould for bonding rubber layer on plastic assembly and manufacturing method applying same |
| CN202742593U (en) * | 2012-07-25 | 2013-02-20 | 宁波千普机械制造有限公司 | Vacuumpumping structure of rubber injection molding vulcanizing machine |
-
2013
- 2013-10-25 CN CN201310511173.5A patent/CN103538182B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2273246Y (en) * | 1996-06-19 | 1998-01-28 | 大连第一锻压机械设备厂 | Vacuum-pumping flat-plate vulcanizer |
| CN102431103A (en) * | 2011-12-20 | 2012-05-02 | 厦门市金汤橡塑有限公司 | Mould for bonding rubber layer on plastic assembly and manufacturing method applying same |
| CN202742593U (en) * | 2012-07-25 | 2013-02-20 | 宁波千普机械制造有限公司 | Vacuumpumping structure of rubber injection molding vulcanizing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103538182B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204820168U (en) | Injection mold of atmospheric pressure chair five -pointed star foot | |
| CN101020364A (en) | Making process of silicone rubber O-ring | |
| CN105235125A (en) | Poly ethylene (PE) material injection molding process | |
| CN102683232A (en) | Semi-conductor packaging die and semi-conductor packaging process | |
| CN214491296U (en) | EVA accuse pressure foaming forming device | |
| CN105835301A (en) | Rapid vulcanization forming process for rubber parts, and die | |
| CN103538182A (en) | Vulcanization method of silicone rubber sealing articles | |
| CN110884168B (en) | Non-autoclave liquid forming device | |
| CN101434128B (en) | Method for manufacturing double cog synchronous belt | |
| CN104494025A (en) | Hot plate type inclined plane guide segmented mold for preparing all steel radial tire and method for preparing tire with mould | |
| CN104589573A (en) | Tire curing bladder moulding method | |
| US1515381A (en) | Method of manufacturing battery jars and similar articles of hard rubber | |
| CN207224386U (en) | A kind of new vacuum tire activating mold | |
| CN204749121U (en) | Mold | |
| CN107160660A (en) | The compression-moulding methods and mould of carbon fiber product | |
| CN101722653A (en) | Manufacturing method for automobile fender | |
| CN204997897U (en) | Novel big mesa vulcanizer of double -cylinder | |
| CN107866935B (en) | Thermoplastic polyurethane product forming process for special airtight garment | |
| CN102179937B (en) | Processing method and processing device for rubber tube material molding | |
| EP3473400B1 (en) | Molding method and molding system for resin molded member | |
| CN219114548U (en) | Novel flat vulcanizing machine | |
| CN205735750U (en) | A kind of double class rubber mould simultaneously | |
| CN203665838U (en) | High-sealing-performance injection mould | |
| CN104006160B (en) | A kind of processing method of rectangular seal | |
| CN203994588U (en) | Seal vacuum pressure forming machine vacuum (-tight) housing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for 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: 20160817 Termination date: 20181025 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |