CN111055509A - Manufacturing method of inflatable sealing ring - Google Patents
Manufacturing method of inflatable sealing ring Download PDFInfo
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- CN111055509A CN111055509A CN201911290291.1A CN201911290291A CN111055509A CN 111055509 A CN111055509 A CN 111055509A CN 201911290291 A CN201911290291 A CN 201911290291A CN 111055509 A CN111055509 A CN 111055509A
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
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- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
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Abstract
The invention discloses a method for manufacturing an inflatable sealing ring, which can directly fill sheet or strip raw materials into a feeder of an extruder, extrude a required tubular rubber strip by matching an extruder head with a corresponding special die, and directly enter a vulcanization line for prevulcanization; cutting the pre-vulcanized tubular rubber strip into a standard length and a cut in an automatic cutting machine, and splicing in an automatic splicer to obtain a preformed inflatable seal ring blank; installing an air tap at a corresponding position of the inflation seal ring blank to obtain an inflation seal ring preforming assembly; finally, the inflatable sealing ring assembly is arranged in a vulcanizing box to be vulcanized to obtain a finished product; the production of the inflation sealing ring with infinite length is realized, the wall thickness of each part of the inflation sealing ring is uniform, the vulcanization degree is uniform, the butt joint efficiency of the sealing ring is accelerated, the problems of low finished product rate and poor quality of products caused by butt joint errors caused by manual butt joint are avoided, the production efficiency of the inflation sealing ring is improved, and the quality and the finished product rate of the products are also improved.
Description
Technical Field
The invention relates to a manufacturing method of an inflatable sealing ring, in particular to a manufacturing method of an inflatable sealing ring, and belongs to the technical field of manufacturing of inflatable sealing rings.
Background
The inflatable sealing ring is also called an air bag, is hollow inside and is provided with one or more inflatable nozzles, and is a sealing technical result used under specific conditions. The finished product has complex manufacturing process, higher requirement on material, lower qualification rate of the finished product, different section shapes, perimeter sizes and perimeter trends of the inflatable sealing rings used in occasions without communication, and the inflatable sealing rings of each specification need to be designed and manufactured with one set of large-scale die, so that the manufacturing cost is very high. At present, monopoly research is broken through in China, a segmented molding and vulcanizing technology of a large-sized inflatable sealing ring is successfully realized, and the large-sized inflatable sealing ring with unlimited perimeter can be manufactured by adopting a small-sized mold.
When the inflatable sealing ring is manufactured, a sheet or strip raw material is manually rolled into a tubular shape, a manual lap joint is carried out, vulcanization molding is carried out after an air nozzle is installed, the traditional production process is slow in efficiency, and the sealing effect is poor and the yield is low due to the fact that the size of the side wall of a produced product is uneven.
Disclosure of Invention
The invention provides a manufacturing method of an inflatable sealing ring, which solves the problems of low production efficiency, high production cost, poor quality and low yield of the inflatable sealing ring in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a method for manufacturing an inflatable sealing ring, which comprises the following specific steps:
step one, plasticating raw rubber: adding the raw rubber into a sealed rubber mixing mill for plasticating to obtain raw rubber raw materials meeting the requirements;
step two, mixing: adding a compounding agent in an internal mixer in proportion, uniformly mixing the compounding agent and the raw rubber, mixing into raw materials meeting the requirement of sealing ring production, and shearing a rubber sheet or rubber strip meeting the requirement on an open mill;
step three, feeding: connecting the open mill with a feed inlet of an extruder, and automatically conveying a rubber sheet or a rubber strip cut by the open mill to the extruder;
step four, extruding and pre-vulcanizing: butting an extruder with a full-automatic vulcanization line, extruding raw materials through an extruder head and a special extrusion die to obtain required tubular rubber strips, allowing the tubular rubber strips to enter the vulcanization line for prevulcanization, allowing the prevulcanization rubber strips to enter an automatic splicer for butting through an automatic cutting machine, and installing an air nozzle to obtain an inflatable sealing ring preforming assembly;
step five, vulcanization molding: filling the pre-vulcanization assembly of the inflatable sealing ring into a vulcanization box for complete vulcanization to obtain a finished product;
step six, detecting and packaging: and taking out the molded product from the vulcanizing tank, detecting the quality of the product through a detection assembly line, and packaging and warehousing the qualified product.
As a preferred technical scheme of the invention, the raw rubber is ethylene propylene diene monomer, nitrile rubber, natural rubber, silicon rubber or styrene butadiene rubber.
As a preferable technical scheme of the invention, the specific gravity range of the raw rubber and the compounding agent is 6:4-8: 2.
In a preferred embodiment of the present invention, the compounding agent is prepared by mixing 25% of carbon black, 20% of zinc oxide, 20% of dioctyl ester, 18% of mercaptobenzimidazole, 10% of dicumyl peroxide and 7% of unsaturated fatty acid.
As a preferred technical scheme of the invention, a rubber vulcanization instrument is adopted to analyze the vulcanization curve of the raw material of the inflatable sealing ring in the fourth step, the temperature of the vulcanization stage of the extruder is regulated to be 60-85 ℃, and the vulcanization time is regulated to be 30-35 minutes.
As a preferred technical scheme of the invention, when the pre-vulcanization assembly of the inflatable sealing ring is arranged in the vulcanization box in the step five for complete vulcanization, the vulcanization temperature of the vulcanization box is 100-115 ℃, and the vulcanization time is 40-50 minutes.
And as a preferred technical scheme, inflating the inflatable sealing ring in the step six, removing the inflatable sealing ring with the air leakage problem, and removing unqualified inflatable sealing rings with bubbles, impurities and scratches on the surface, a large amount of burrs on the surface and irregular shapes.
The invention has the following beneficial effects: compared with the prior art, the manufacturing method of the inflatable sealing ring has the following beneficial effects:
1. according to the manufacturing method of the inflatable sealing ring, the extruder is butted with the automatic butting machine, the extruded preformed pipe can be directly butted through the butting machine, then the preformed pipe is pre-vulcanized into a semi-finished product and finally vulcanized and molded, the butting efficiency of the sealing ring can be accelerated, the problems of low finished product rate and poor quality of the product caused by butting errors caused by manual butting are solved, the production efficiency of the inflatable sealing ring is improved, and the quality and the finished product rate of the product are also improved.
2. The manufacturing method of the inflatable sealing ring can directly fill sheet or strip raw materials into the feeder of the extruder, then extrude the required tubular rubber strip by matching the extruder head with the corresponding special die, and directly enter the vulcanization line for prevulcanization; cutting the pre-vulcanized tubular rubber strip into a standard length and a cut in an automatic cutting machine, and splicing in an automatic splicer to obtain a preformed inflatable seal ring blank; installing an air tap at a corresponding position of the inflation seal ring blank to obtain an inflation seal ring preforming assembly; finally, the inflatable sealing ring assembly is arranged in a vulcanizing box to be vulcanized to obtain a finished product; the production of the inflation sealing ring with infinite length is realized, and the uniform wall thickness and uniform vulcanization degree of each part of the inflation sealing ring are ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a flow chart of a method for manufacturing a pneumatic sealing ring according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
As shown in fig. 1, the present invention provides a method for manufacturing an inflatable sealing ring, which comprises the following steps:
step one, plasticating raw rubber: adding the raw rubber into a sealed rubber mixing mill for plasticating to obtain raw rubber raw materials meeting the requirements;
step two, mixing: adding a compounding agent in an internal mixer in proportion, uniformly mixing the compounding agent and the raw rubber, mixing into raw materials meeting the requirement of sealing ring production, and shearing a rubber sheet or rubber strip meeting the requirement on an open mill;
step three, feeding: connecting the open mill with a feed inlet of an extruder, and automatically conveying a rubber sheet or a rubber strip cut by the open mill to the extruder;
step four, extruding and pre-vulcanizing: butting an extruder with a full-automatic vulcanization line, extruding raw materials through an extruder head and a special extrusion die to obtain required tubular rubber strips, allowing the tubular rubber strips to enter the vulcanization line for prevulcanization, allowing the prevulcanization rubber strips to enter an automatic splicer for butting through an automatic cutting machine, and installing an air nozzle to obtain an inflatable sealing ring preforming assembly;
setting the vulcanization temperature of the automatic vulcanization line to be 75 ℃ and the vulcanization time to be 32 minutes;
step five, vulcanization molding: filling the pre-vulcanization assembly of the inflatable sealing ring into a vulcanization box for complete vulcanization to obtain a finished product;
setting a vulcanizing box of an automatic vulcanizing line at 108 ℃ and vulcanizing time of 45 minutes;
step six, detecting and packaging: and taking out the molded product from the vulcanizing tank, detecting the quality of the product through a detection assembly line, and packaging and warehousing the qualified product.
The raw rubber is ethylene propylene diene monomer, nitrile rubber, natural rubber, silicon rubber or styrene butadiene rubber.
The proportion of the crude rubber and the compounding agent is 6:4-8: 2.
The compounding agent is prepared by mixing 25% of carbon black, 20% of zinc oxide, 20% of dioctyl ester, 18% of mercaptobenzimidazole, 10% of dicumyl peroxide and 7% of unsaturated fatty acid.
And step six, inflating the inflatable sealing ring, removing the inflatable sealing ring with the air leakage problem, and removing the inflatable sealing ring with bubbles, impurities and scratches on the surface, a large amount of burrs on the surface and unqualified inflatable sealing rings with irregular shapes.
Sheet or strip raw materials can be directly filled into a feeder of an extruder, then the required tubular adhesive tape is extruded by matching an extruder head with a corresponding special die, and the extruded tubular adhesive tape directly enters a vulcanization line for prevulcanization; cutting the pre-vulcanized tubular rubber strip into a standard length and a cut in an automatic cutting machine, and splicing in an automatic splicer to obtain a preformed inflatable seal ring blank; installing an air tap at a corresponding position of the inflation seal ring blank to obtain an inflation seal ring preforming assembly; finally, the inflatable sealing ring assembly is arranged in a vulcanizing box to be vulcanized to obtain a finished product; the production of the inflation sealing ring with infinite length is realized, and the uniform wall thickness and uniform vulcanization degree of each part of the inflation sealing ring are ensured.
Example 2
According to the production method provided by the invention, the inflatable sealing ring is produced, and the vulcanization temperature in the production of the inflatable sealing ring is changed, and the specific steps of manufacturing the inflatable sealing ring are as follows:
step one, plasticating raw rubber: adding the raw rubber into a sealed rubber mixing mill for plasticating to obtain raw rubber raw materials meeting the requirements;
step two, mixing: adding a compounding agent in an internal mixer in proportion, uniformly mixing the compounding agent and the raw rubber, mixing into raw materials meeting the requirement of sealing ring production, and shearing a rubber sheet or rubber strip meeting the requirement on an open mill;
step three, feeding: connecting the open mill with a feed inlet of an extruder, and automatically conveying a rubber sheet or a rubber strip cut by the open mill to the extruder;
step four, extruding and pre-vulcanizing: butting an extruder with a full-automatic vulcanization line, extruding raw materials through an extruder head and a special extrusion die to obtain required tubular rubber strips, allowing the tubular rubber strips to enter the vulcanization line for prevulcanization, allowing the prevulcanization rubber strips to enter an automatic splicer for butting through an automatic cutting machine, and installing an air nozzle to obtain an inflatable sealing ring preforming assembly;
setting the vulcanization temperature of the automatic vulcanization line to be 80 ℃ and the vulcanization time to be 32 minutes;
step five, vulcanization molding: filling the pre-vulcanization assembly of the inflatable sealing ring into a vulcanization box for complete vulcanization to obtain a finished product;
setting the vulcanizing box of the automatic vulcanizing line at 112 ℃ and the vulcanizing time to be 45 minutes;
step six, detecting and packaging: and taking out the molded product from the vulcanizing tank, detecting the quality of the product through a detection assembly line, and packaging and warehousing the qualified product.
The raw rubber is ethylene propylene diene monomer, nitrile rubber, natural rubber, silicon rubber or styrene butadiene rubber.
The proportion of the crude rubber and the compounding agent is 6:4-8: 2.
The compounding agent is prepared by mixing 25% of carbon black, 20% of zinc oxide, 20% of dioctyl ester, 18% of mercaptobenzimidazole, 10% of dicumyl peroxide and 7% of unsaturated fatty acid.
And step six, inflating the inflatable sealing ring, removing the inflatable sealing ring with the air leakage problem, and removing the inflatable sealing ring with bubbles, impurities and scratches on the surface, a large amount of burrs on the surface and unqualified inflatable sealing rings with irregular shapes.
Example 3
According to the production method provided by the invention, the inflatable sealing ring is produced, and the vulcanization temperature in the production of the inflatable sealing ring is changed, and the specific steps of manufacturing the inflatable sealing ring are as follows:
step one, plasticating raw rubber: adding the raw rubber into a sealed rubber mixing mill for plasticating to obtain raw rubber raw materials meeting the requirements;
step two, mixing: adding a compounding agent in an internal mixer in proportion, uniformly mixing the compounding agent and the raw rubber, mixing into raw materials meeting the requirement of sealing ring production, and shearing a rubber sheet or rubber strip meeting the requirement on an open mill;
step three, feeding: connecting the open mill with a feed inlet of an extruder, and automatically conveying a rubber sheet or a rubber strip cut by the open mill to the extruder;
step four, extruding and pre-vulcanizing: butting an extruder with a full-automatic vulcanization line, extruding raw materials through an extruder head and a special extrusion die to obtain required tubular rubber strips, allowing the tubular rubber strips to enter the vulcanization line for prevulcanization, allowing the prevulcanization rubber strips to enter an automatic splicer for butting through an automatic cutting machine, and installing an air nozzle to obtain an inflatable sealing ring preforming assembly;
setting the vulcanization temperature of the automatic vulcanization line to be 89 ℃ and the vulcanization time to be 32 minutes;
step five, vulcanization molding: filling the pre-vulcanization assembly of the inflatable sealing ring into a vulcanization box for complete vulcanization to obtain a finished product;
setting the vulcanizing box of the automatic vulcanizing line at 130 ℃ and the vulcanizing time to be 45 minutes;
step six, detecting and packaging: and taking out the molded product from the vulcanizing tank, detecting the quality of the product through a detection assembly line, and packaging and warehousing the qualified product.
The raw rubber is ethylene propylene diene monomer, nitrile rubber, natural rubber, silicon rubber or styrene butadiene rubber.
The proportion of the crude rubber and the compounding agent is 6:4-8: 2.
The compounding agent is prepared by mixing 25% of carbon black, 20% of zinc oxide, 20% of dioctyl ester, 18% of mercaptobenzimidazole, 10% of dicumyl peroxide and 7% of unsaturated fatty acid.
And step six, inflating the inflatable sealing ring, removing the inflatable sealing ring with the air leakage problem, and removing the inflatable sealing ring with bubbles, impurities and scratches on the surface, a large amount of burrs on the surface and unqualified inflatable sealing rings with irregular shapes.
Example 4
According to the production method provided by the invention, the inflatable sealing ring is produced, and the vulcanization temperature in the production of the inflatable sealing ring is changed, and the specific steps of manufacturing the inflatable sealing ring are as follows:
step one, plasticating raw rubber: adding the raw rubber into a sealed rubber mixing mill for plasticating to obtain raw rubber raw materials meeting the requirements;
step two, mixing: adding a compounding agent in an internal mixer in proportion, uniformly mixing the compounding agent and the raw rubber, mixing into raw materials meeting the requirement of sealing ring production, and shearing a rubber sheet or rubber strip meeting the requirement on an open mill;
step three, feeding: connecting the open mill with a feed inlet of an extruder, and automatically conveying a rubber sheet or a rubber strip cut by the open mill to the extruder;
step four, extruding and pre-vulcanizing: butting an extruder with a full-automatic vulcanization line, extruding raw materials through an extruder head and a special extrusion die to obtain required tubular rubber strips, allowing the tubular rubber strips to enter the vulcanization line for prevulcanization, allowing the prevulcanization rubber strips to enter an automatic splicer for butting through an automatic cutting machine, and installing an air nozzle to obtain an inflatable sealing ring preforming assembly;
setting the vulcanization temperature of the automatic vulcanization line to be 95 ℃ and the vulcanization time to be 32 minutes;
step five, vulcanization molding: filling the pre-vulcanization assembly of the inflatable sealing ring into a vulcanization box for complete vulcanization to obtain a finished product;
setting the vulcanizing box of the automatic vulcanizing line at 160 ℃ and the vulcanizing time to be 45 minutes;
step six, detecting and packaging: and taking out the molded product from the vulcanizing tank, detecting the quality of the product through a detection assembly line, and packaging and warehousing the qualified product.
The raw rubber is ethylene propylene diene monomer, nitrile rubber, natural rubber, silicon rubber or styrene butadiene rubber.
The proportion of the crude rubber and the compounding agent is 6:4-8: 2.
The compounding agent is prepared by mixing 25% of carbon black, 20% of zinc oxide, 20% of dioctyl ester, 18% of mercaptobenzimidazole, 10% of dicumyl peroxide and 7% of unsaturated fatty acid.
And step six, inflating the inflatable sealing ring, removing the inflatable sealing ring with the air leakage problem, and removing the inflatable sealing ring with bubbles, impurities and scratches on the surface, a large amount of burrs on the surface and unqualified inflatable sealing rings with irregular shapes.
Four sets of pneumatic seal rings were produced and tested for performance according to the manufacturing methods described in examples 1-4, with the test results in table 1, below:
from the experimental data in table 1, it can be seen that the pneumatic seal ring produced by the method of manufacturing a pneumatic seal ring according to the present invention has a tensile strength gradually decreasing with the increase of temperature, and has a constant vulcanization time with the increase of temperature, and the higher the density of cross-links formed by molecular chains, the more difficult the relative sliding between molecular chains is, the lower the elongation at break and the lower the permanent deformation of rubber, and the higher the temperature is, the lower the overall performance of rubber is, so that the elongation at break and the permanent deformation of rubber increases, and the yield of the produced pneumatic seal ring becomes lower and lower, so that it is necessary to control the temperature and time of the vulcanization process in the production of the pneumatic seal ring, and since the differences between the tensile strength, the elongation at break, the permanent deformation of rubber and the yield of the pneumatic seal ring produced in examples 1 and 2 are small, it can be seen that the optimum temperature range in the vulcanization stage of the extruder is adjusted to 60 to 85 ℃, the vulcanization time is 30-35 minutes, the optimum vulcanization temperature range of the vulcanization box is 100-115 ℃, and the vulcanization time is 40-50 minutes, according to the actual situation, according to the production method provided by the invention, the pneumatic sealing ring is produced at the vulcanization temperature of the vulcanization stage of the extruder, the vulcanization time is 60-85 ℃, the vulcanization temperature range of the vulcanization box is 100-115 ℃, and the vulcanization time is 40-50 minutes.
The manufacturing method of the inflatable sealing ring can directly fill sheet or strip raw materials into the feeder of the extruder, then extrude the required tubular rubber strip by matching the extruder head with the corresponding special die, and directly enter the vulcanization line for prevulcanization; cutting the pre-vulcanized tubular rubber strip into a standard length and a cut in an automatic cutting machine, and splicing in an automatic splicer to obtain a preformed inflatable seal ring blank; installing an air tap at a corresponding position of the inflation seal ring blank to obtain an inflation seal ring preforming assembly; finally, the inflatable sealing ring assembly is arranged in a vulcanizing box to be vulcanized to obtain a finished product; the production of the inflation sealing ring with infinite length is realized, the wall thickness of each part of the inflation sealing ring is uniform, the vulcanization degree is uniform, the butt joint efficiency of the sealing ring is accelerated, the problems of low finished product rate and poor quality of products caused by butt joint errors caused by manual butt joint are avoided, the production efficiency of the inflation sealing ring is improved, and the quality and the finished product rate of the products are also improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The manufacturing method of the inflatable sealing ring is characterized by comprising the following specific steps of:
step one, plasticating raw rubber: adding the raw rubber into a sealed rubber mixing mill for plasticating to obtain raw rubber raw materials meeting the requirements;
step two, mixing: adding a compounding agent in an internal mixer in proportion, uniformly mixing the compounding agent and the raw rubber, mixing into raw materials meeting the requirement of sealing ring production, and shearing a rubber sheet or rubber strip meeting the requirement on an open mill;
step three, feeding: connecting the open mill with a feed inlet of an extruder, and automatically conveying a rubber sheet or a rubber strip cut by the open mill to the extruder;
step four, extruding and pre-vulcanizing: butting an extruder with a full-automatic vulcanization line, extruding raw materials through an extruder head and a special extrusion die to obtain required tubular rubber strips, allowing the tubular rubber strips to enter the vulcanization line for prevulcanization, allowing the prevulcanization rubber strips to enter an automatic splicer for butting through an automatic cutting machine, and installing an air nozzle to obtain an inflatable sealing ring preforming assembly;
step five, vulcanization molding: filling the pre-vulcanization assembly of the inflatable sealing ring into a vulcanization box for complete vulcanization to obtain a finished product;
step six, detecting and packaging: and taking out the molded product from the vulcanizing tank, detecting the quality of the product through a detection assembly line, and packaging and warehousing the qualified product.
2. The method for manufacturing an inflatable seal ring according to claim 1, wherein the raw rubber is ethylene propylene diene monomer, nitrile rubber, natural rubber, silicone rubber or styrene butadiene rubber.
3. The method for manufacturing an inflatable sealing ring according to claim 2, wherein the specific gravity of the raw rubber and the compounding agent is 6:4-8: 2.
4. The method for manufacturing an inflatable seal ring according to claim 3, wherein the compounding agent is formed by mixing 25% of carbon black, 20% of zinc oxide, 20% of dioctyl ester, 18% of mercaptobenzimidazole, 10% of dicumyl peroxide and 7% of unsaturated fatty acid.
5. The method for manufacturing the pneumatic sealing ring according to claim 1, wherein a vulcanization curve of a raw material of the pneumatic sealing ring is analyzed by a rubber vulcanization instrument in the fourth step, the temperature of the vulcanization stage of the extruder is controlled to be 60-85 ℃, and the vulcanization time is controlled to be 30-35 minutes.
6. The method as claimed in claim 1, wherein when the pre-vulcanization assembly is fully vulcanized in the vulcanization tank in step five, the vulcanization temperature of the vulcanization tank is 100-.
7. The method for manufacturing a pneumatic sealing ring according to claim 1, wherein the pneumatic sealing ring is inflated in step six, the pneumatic sealing ring with air leakage problem is removed, and unqualified pneumatic sealing rings with air bubbles, impurities and scratches on the surface, a large amount of burrs on the surface and irregular shapes are removed.
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| CN111497299A (en) * | 2020-06-02 | 2020-08-07 | 徐州工业职业技术学院 | Processing method for high-quality and high-efficiency production of rubber automobile parts |
| CN112373086A (en) * | 2020-11-18 | 2021-02-19 | 北京建科汇峰科技有限公司 | Automatic production system for sealing element |
| CN114734664A (en) * | 2022-03-23 | 2022-07-12 | 四川佳世特橡胶有限公司 | Continuous production device and production process of sealed capsules |
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Application publication date: 20200424 |