CN111086251A - Integral vulcanization production process for inflatable sealing ring - Google Patents
Integral vulcanization production process for inflatable sealing ring Download PDFInfo
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- CN111086251A CN111086251A CN201911290290.7A CN201911290290A CN111086251A CN 111086251 A CN111086251 A CN 111086251A CN 201911290290 A CN201911290290 A CN 201911290290A CN 111086251 A CN111086251 A CN 111086251A
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- sealing ring
- inflatable sealing
- vulcanization
- production process
- integral
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- 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
- B29D23/00—Producing tubular articles
- B29D23/24—Endless tubes, e.g. inner tubes for pneumatic tyres
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- 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
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
- B29C66/1142—Single butt to butt joints
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an integral vulcanization production process of an inflatable sealing ring, which comprises the following steps: feeding the rubber raw material after mixing into an extruder for processing to obtain a tubular rubber strip required by the requirement; conveying the tubular rubber strip into a jointing machine for jointing to obtain an annular inflatable sealing ring blank; and respectively feeding the annular inflatable sealing ring blank and the air nozzle into a vulcanizing box for vulcanization. According to the integral vulcanization production process for the inflatable sealing ring, disclosed by the invention, firstly, the complexity of working procedures can be greatly reduced, so that the personnel allocation is reduced, the labor cost is greatly reduced, the working efficiency is improved, the integral processing is controlled by a machine, the finished product rate is improved, the quality of the produced inflatable sealing ring is better, secondly, the thickness of the side wall of the produced product is uniform, the integral vulcanization degree is uniform, the deformation or expansion of the sealing ring during working is very stable, the sealing effect of the inflatable sealing ring is improved, and the use effect is better, so that a better use prospect is brought.
Description
Technical Field
The invention relates to the field of production of inflatable sealing rings, in particular to an integral vulcanization production process of an inflatable sealing ring.
Background
With the rapid development of the society and the continuous improvement of the mechanical automation level, the requirements of people on the working efficiency and the working environment are higher and higher, particularly the requirements of the manufacturing industry and the pharmaceutical industry on the sealing performance of equipment are continuously improved, and in order to meet the requirements, people invent the inflatable sealing ring which can expand according to the sealing working condition and can seal even a larger gap. Even if the sealing surface has some deformation, corrugation and concave-convex conditions, the sealing surface can be fully attached to exert a good sealing function, along with the development of the society, the requirements of people on the requirements and the quality of the inflatable sealing ring are higher and higher, and the requirements on the vulcanization process of the inflatable sealing ring are higher and higher, so that the existing integral vulcanization production process of the inflatable sealing ring cannot meet the use requirements of people;
the traditional vulcanization process is slow in efficiency, the size of the side wall of a produced product is uneven, the sealing effect is poor, the yield is low, the performance of the produced inflatable sealing ring is low, and the requirements of people are not met.
Disclosure of Invention
The invention mainly aims to provide an integral vulcanization production process of an inflatable sealing ring, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
an integral vulcanization production process of an inflatable sealing ring comprises the following steps:
(1) feeding the rubber raw material after mixing into an extruder for processing to obtain a tubular rubber strip required by the requirement;
(2) conveying the tubular rubber strip into a jointing machine for jointing to obtain an annular inflatable sealing ring blank;
(3) respectively feeding the tire blank and the air nozzle of the annular inflatable sealing ring into a vulcanizing box for vulcanizing to obtain a precured tire blank and a precured air nozzle;
(4) mounting a precuring air tap at a corresponding position of a precuring tire blank to obtain an inflatable sealing ring preforming assembly;
(5) mounting the inflatable sealing ring pre-forming assembly into a vulcanization mold, and then conveying the whole mold into vulcanization equipment for vulcanization;
(6) taking out the vulcanization mold, taking out the vulcanized pneumatic sealing ring from the vulcanization mold, and polishing the outer surface of the vulcanized pneumatic sealing ring;
(7) and detecting the polished inflatable sealing rings by adopting a visual inspection method, removing unqualified inflatable sealing rings, and sending the rest inflatable sealing rings into a storage room for storage.
Preferably, in the step (1), the extruded tubular rubber strip is sent to a cutting machine for cutting to a standard length.
Preferably, in the step (3), the annular inflatable sealing ring tire blank and the air tap need to be pre-vulcanized before being vulcanized, the temperature of the annular inflatable sealing ring tire blank and the air tap is 70-80 ℃ during pre-vulcanization, and the annular inflatable sealing ring tire blank and the air tap are tightly attached after pre-vulcanization.
Preferably, in the step (3), the vulcanization temperature when the annular inflatable sealing ring tire blank and the air tap are vulcanized by using a vulcanization box is 113-.
Preferably, in the step (4), the pre-vulcanized air tap is installed and then the air is inflated into the inflatable sealing ring pre-forming assembly, the sealing performance of the inflatable sealing ring pre-forming assembly is detected, and the inflatable sealing ring pre-forming assembly with air leakage is eliminated.
Preferably, in the step (5), the vulcanization temperature of the vulcanization equipment is 168-172 ℃, and the vulcanization time is 8-10 minutes.
Preferably, in the step (7), a magnifying glass of 0-5 times is used for inspection when the visual inspection method is used for inspecting the inflatable sealing ring, and the unqualified inflatable sealing ring is an inflatable sealing ring with bubbles on the surface, holes on the surface, impurities, concave-convex parts on the surface, scratches on the surface, a large number of burrs on the surface and irregular shape.
Preferably, in the step (7), the temperature during storage is 0 to 25 ℃ and the relative humidity during storage is 50 to 70%.
Compared with the prior art, the integral vulcanization production process for the inflatable sealing ring has the following beneficial effects:
1. the rubber is directly extruded into a tubular shape through an extruder, then butt joint is carried out through a splicer, an air nozzle is installed after vulcanization, and vulcanization is carried out again, so that the thickness of the side wall of the produced product is uniform, the integral vulcanization degree is uniform, the deformation or expansion of the sealing ring is very stable during working, and the sealing effect of the inflatable sealing ring is improved;
2. the tubular rubber strips are butted by adopting the splicer, so that secondary overlapping at the joint is avoided, the position of the air nozzle is more accurate, and the complexity of the working procedure can be greatly reduced, so that the personnel is reduced, the labor cost is greatly reduced, the working efficiency is improved, the integral processing is controlled by a machine, the yield is improved, and the quality of the produced inflatable sealing ring is better;
3. the produced rubber sealing ring has higher overall tensile strength, lower elongation at break and lower permanent deformation at break, the performance of the whole rubber sealing ring is more stable, the whole vulcanization production process of the whole inflatable sealing ring is simple, the operation is convenient, and the use effect is better than that of the traditional mode.
Drawings
FIG. 1 is a flow chart of the overall structure of the overall vulcanization production process of the inflatable sealing ring of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
(1) Feeding the rubber raw material after mixing into an extruder for processing to obtain a tubular rubber strip required by the requirement;
and sending the extruded tubular adhesive tape into a cutting machine for cutting to a standard length.
(2) Conveying the tubular rubber strip into a jointing machine for jointing to obtain an annular inflatable sealing ring blank;
(3) respectively feeding the tire blank and the air nozzle of the annular inflatable sealing ring into a vulcanizing box for vulcanizing to obtain a precured tire blank and a precured air nozzle;
the method comprises the following steps that (1) pre-vulcanization is required before vulcanization of an annular inflatable sealing ring tire blank and an air faucet, the temperature of the annular inflatable sealing ring tire blank and the air faucet is 75 ℃ during pre-vulcanization, and the annular inflatable sealing ring tire blank and the air faucet are tightly attached after pre-vulcanization;
the vulcanizing temperature when the annular inflatable sealing ring tire blank and the air tap are vulcanized by adopting a vulcanizing box is 115 ℃, and the vulcanizing time is 50 min.
(4) Mounting a precuring air tap at a corresponding position of a precuring tire blank to obtain an inflatable sealing ring preforming assembly;
and (3) inflating the pre-vulcanized air nozzle into the inflatable sealing ring pre-forming assembly, detecting the sealing performance of the inflatable sealing ring pre-forming assembly, and rejecting the inflatable sealing ring pre-forming assembly with air leakage.
(5) Mounting the inflatable sealing ring pre-forming assembly into a vulcanization mold, and then conveying the whole mold into vulcanization equipment for vulcanization;
the vulcanization temperature of the vulcanization equipment is 168 ℃, and the vulcanization time is 10 minutes.
(6) Taking out the vulcanization mold, taking out the vulcanized pneumatic sealing ring from the vulcanization mold, and polishing the outer surface of the vulcanized pneumatic sealing ring;
(7) and detecting the polished inflatable sealing rings by adopting a visual inspection method, removing unqualified inflatable sealing rings, and sending the rest inflatable sealing rings into a storage room for storage.
When the inflatable sealing ring is detected by adopting a visual inspection method, a magnifying lens of 5 times is adopted for inspection, and the unqualified inflatable sealing ring is an inflatable sealing ring with bubbles on the surface, holes on the surface, impurities, concave-convex parts on the surface, scratches on the surface, a large amount of burrs on the surface and irregular shape.
The temperature during storage was 20 ℃ and the relative humidity during storage was 60%.
Example 2
(1) Feeding the rubber raw material after mixing into an extruder for processing to obtain a tubular rubber strip required by the requirement;
and sending the extruded tubular adhesive tape into a cutting machine for cutting to a standard length.
(2) Conveying the tubular rubber strip into a jointing machine for jointing to obtain an annular inflatable sealing ring blank;
(3) respectively feeding the tire blank and the air nozzle of the annular inflatable sealing ring into a vulcanizing box for vulcanizing to obtain a precured tire blank and a precured air nozzle;
the method comprises the following steps that (1) pre-vulcanization is required before vulcanization of an annular inflatable sealing ring tire blank and an air faucet, the temperature of the annular inflatable sealing ring tire blank and the air faucet is 75 ℃ during pre-vulcanization, and the annular inflatable sealing ring tire blank and the air faucet are tightly attached after pre-vulcanization;
the vulcanizing temperature when the annular inflatable sealing ring tire blank and the air tap are vulcanized by adopting a vulcanizing box is 115 ℃, and the vulcanizing time is 50 min.
(6) Mounting a precuring air tap at a corresponding position of a precuring tire blank to obtain an inflatable sealing ring preforming assembly;
and (3) inflating the pre-vulcanized air nozzle into the inflatable sealing ring pre-forming assembly, detecting the sealing performance of the inflatable sealing ring pre-forming assembly, and rejecting the inflatable sealing ring pre-forming assembly with air leakage.
(7) Mounting the inflatable sealing ring pre-forming assembly into a vulcanization mold, and then conveying the whole mold into vulcanization equipment for vulcanization;
the vulcanization temperature of the vulcanization equipment is 170 ℃ and the vulcanization time is 9 minutes.
(6) Taking out the vulcanization mold, taking out the vulcanized pneumatic sealing ring from the vulcanization mold, and polishing the outer surface of the vulcanized pneumatic sealing ring;
(7) and detecting the polished inflatable sealing rings by adopting a visual inspection method, removing unqualified inflatable sealing rings, and sending the rest inflatable sealing rings into a storage room for storage.
When the inflatable sealing ring is detected by adopting a visual inspection method, a magnifying lens of 5 times is adopted for inspection, and the unqualified inflatable sealing ring is an inflatable sealing ring with bubbles on the surface, holes on the surface, impurities, concave-convex parts on the surface, scratches on the surface, a large amount of burrs on the surface and irregular shape.
The temperature during storage was 20 ℃ and the relative humidity during storage was 60%.
Example 3
(1) Feeding the rubber raw material after mixing into an extruder for processing to obtain a tubular rubber strip required by the requirement;
and sending the extruded tubular adhesive tape into a cutting machine for cutting to a standard length.
(2) Conveying the tubular rubber strip into a jointing machine for jointing to obtain an annular inflatable sealing ring blank;
(3) respectively feeding the tire blank and the air nozzle of the annular inflatable sealing ring into a vulcanizing box for vulcanizing to obtain a precured tire blank and a precured air nozzle;
the method comprises the following steps that (1) pre-vulcanization is required before vulcanization of an annular inflatable sealing ring tire blank and an air faucet, the temperature of the annular inflatable sealing ring tire blank and the air faucet is 75 ℃ during pre-vulcanization, and the annular inflatable sealing ring tire blank and the air faucet are tightly attached after pre-vulcanization;
the vulcanizing temperature when the annular inflatable sealing ring tire blank and the air tap are vulcanized by adopting a vulcanizing box is 115 ℃, and the vulcanizing time is 50 min.
(8) Mounting a precuring air tap at a corresponding position of a precuring tire blank to obtain an inflatable sealing ring preforming assembly;
and (3) inflating the pre-vulcanized air nozzle into the inflatable sealing ring pre-forming assembly, detecting the sealing performance of the inflatable sealing ring pre-forming assembly, and rejecting the inflatable sealing ring pre-forming assembly with air leakage.
(9) Mounting the inflatable sealing ring pre-forming assembly into a vulcanization mold, and then conveying the whole mold into vulcanization equipment for vulcanization;
the vulcanization temperature of the vulcanization equipment is 172 ℃, and the vulcanization time is 8 minutes.
(6) Taking out the vulcanization mold, taking out the vulcanized pneumatic sealing ring from the vulcanization mold, and polishing the outer surface of the vulcanized pneumatic sealing ring;
(7) and detecting the polished inflatable sealing rings by adopting a visual inspection method, removing unqualified inflatable sealing rings, and sending the rest inflatable sealing rings into a storage room for storage.
When the inflatable sealing ring is detected by adopting a visual inspection method, a magnifying lens of 5 times is adopted for inspection, and the unqualified inflatable sealing ring is an inflatable sealing ring with bubbles on the surface, holes on the surface, impurities, concave-convex parts on the surface, scratches on the surface, a large amount of burrs on the surface and irregular shape.
The temperature during storage was 20 ℃ and the relative humidity during storage was 60%.
Three sets of pneumatic seals, designated No. 1, No. 2 and No. 3, were produced according to the vulcanization process described in examples 1-3, and pneumatic seals, designated No. 4, were produced according to the prior art described in the background, and their performance was tested, table 1 being the test results, as follows:
from the experimental data in table 1, it can be seen that the pneumatic seal ring produced by the overall vulcanization production process of the pneumatic seal ring of the present invention has better performance than that of the conventional pneumatic seal ring, and as the temperature rises, the tensile strength of the pneumatic seal ring gradually decreases, and as the temperature rises, the vulcanization time is longer, the density of cross-links formed by molecular chains is higher, the relative sliding between the molecular chains is more difficult, the elongation at break and the permanent deformation rate of the rubber are lower, and as the temperature is too high, the overall performance of the rubber changes, so that the elongation at break and the permanent deformation rate thereof rises.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The integral vulcanization production process of the inflatable sealing ring is characterized by comprising the following steps of: the method comprises the following steps:
(1) feeding the rubber raw material after mixing into an extruder for processing to obtain a tubular rubber strip required by the requirement;
(2) conveying the tubular rubber strip into a jointing machine for jointing to obtain an annular inflatable sealing ring blank;
(3) respectively feeding the tire blank and the air nozzle of the annular inflatable sealing ring into a vulcanizing box for vulcanizing to obtain a precured tire blank and a precured air nozzle;
(4) mounting a precuring air tap at a corresponding position of a precuring tire blank to obtain an inflatable sealing ring preforming assembly;
(5) mounting the inflatable sealing ring pre-forming assembly into a vulcanization mold, and then conveying the whole mold into vulcanization equipment for vulcanization;
(6) taking out the vulcanization mold, taking out the vulcanized pneumatic sealing ring from the vulcanization mold, and polishing the outer surface of the vulcanized pneumatic sealing ring;
(7) and detecting the polished inflatable sealing rings by adopting a visual inspection method, removing unqualified inflatable sealing rings, and sending the rest inflatable sealing rings into a storage room for storage.
2. The integral vulcanization production process of an inflatable sealing ring according to claim 1, characterized in that: in the step (1), the extruded tubular adhesive tape is sent to a cutting machine for cutting to a standard length.
3. The integral vulcanization production process of an inflatable sealing ring according to claim 1, characterized in that: in the step (3), the annular inflatable sealing ring blank and the air nozzle need to be pre-vulcanized before being vulcanized, the temperature of the annular inflatable sealing ring blank and the air nozzle is 70-80 ℃ during pre-vulcanization, and the annular inflatable sealing ring blank and the air nozzle are tightly attached after pre-vulcanization.
4. The integral vulcanization production process of an inflatable sealing ring according to claim 1, characterized in that: in the step (3), the vulcanization temperature when the annular inflatable sealing ring tire blank and the air tap are vulcanized by adopting a vulcanization box is 113-118 ℃, and the vulcanization time is 48-53 min.
5. The integral vulcanization production process of an inflatable sealing ring according to claim 1, characterized in that: and (4) installing a prevulcanization air nozzle, inflating the prevulcanization air nozzle into the inflatable sealing ring preforming assembly, detecting the sealing performance of the inflatable sealing ring preforming assembly, and rejecting the inflatable sealing ring preforming assembly with air leakage.
6. The integral vulcanization production process of an inflatable sealing ring according to claim 1, characterized in that: in the step (5), the vulcanization temperature of the vulcanization equipment is 168-172 ℃, and the vulcanization time is 8-10 minutes.
7. The integral vulcanization production process of an inflatable sealing ring according to claim 1, characterized in that: in the step (7), a magnifying glass of 0-5 times is used for inspection when the inflatable sealing ring is detected by adopting a visual inspection method, and unqualified inflatable sealing rings are inflatable sealing rings with bubbles on the surface, holes on the surface, impurities, concave-convex parts on the surface, scratches on the surface, a large amount of burrs on the surface and irregular shapes.
8. The integral vulcanization production process of an inflatable sealing ring according to claim 1, characterized in that: in the step (7), the temperature during storage is 0-25 ℃, and the relative humidity during storage is 50-70%.
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| CN201911290290.7A CN111086251A (en) | 2019-12-16 | 2019-12-16 | Integral vulcanization production process for inflatable sealing ring |
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| CN201911290290.7A CN111086251A (en) | 2019-12-16 | 2019-12-16 | Integral vulcanization production process for inflatable sealing ring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115401845A (en) * | 2022-09-14 | 2022-11-29 | 无锡市万盛橡塑制品有限责任公司 | Fault positioning feedback device for rubber sealing element of motorcycle brake |
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|---|---|---|---|---|
| CN1583400A (en) * | 2004-06-02 | 2005-02-23 | 王明江 | Manufacturing process for non-aerating hollow tyre and special mould core |
| CN101718341A (en) * | 2009-12-18 | 2010-06-02 | 成都盛帮密封件有限公司 | Compound sealing ring for oil drilling and processing technology thereof |
| CN110539428A (en) * | 2019-10-15 | 2019-12-06 | 咸阳裕华橡胶制品有限公司 | Preparation method of rubber sealing element and vulcanization mold thereof |
-
2019
- 2019-12-16 CN CN201911290290.7A patent/CN111086251A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1583400A (en) * | 2004-06-02 | 2005-02-23 | 王明江 | Manufacturing process for non-aerating hollow tyre and special mould core |
| CN101718341A (en) * | 2009-12-18 | 2010-06-02 | 成都盛帮密封件有限公司 | Compound sealing ring for oil drilling and processing technology thereof |
| CN110539428A (en) * | 2019-10-15 | 2019-12-06 | 咸阳裕华橡胶制品有限公司 | Preparation method of rubber sealing element and vulcanization mold thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115401845A (en) * | 2022-09-14 | 2022-11-29 | 无锡市万盛橡塑制品有限责任公司 | Fault positioning feedback device for rubber sealing element of motorcycle brake |
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Application publication date: 20200501 |