CN111452277A - Forming device and process of rubber sponge barrel-shaped section bar - Google Patents
Forming device and process of rubber sponge barrel-shaped section bar Download PDFInfo
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- CN111452277A CN111452277A CN202010249739.1A CN202010249739A CN111452277A CN 111452277 A CN111452277 A CN 111452277A CN 202010249739 A CN202010249739 A CN 202010249739A CN 111452277 A CN111452277 A CN 111452277A
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- mold
- rubber
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- barrel
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
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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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5816—Measuring, controlling or regulating temperature
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
A forming device and a process for a rubber sponge barrel-shaped section bar are disclosed, the device comprises a shaping grinding core rod, a shaping mold and a forming mold lower mold, the shaping grinding core rod is matched and adapted with the top of the shaping mold lower mold, a first U-shaped barrel-shaped filling cavity is arranged in the shaping mold, and a second U-shaped barrel-shaped filling cavity is arranged in the forming mold lower mold; the device can be used for preparing a sponge barrel-shaped section with uniform and stable foam cell size, a micropore closed structure and low apparent density through shaping, vulcanizing and post-treatment segmented forming processes; the invention has the advantages of simple structure, simple and convenient process, practicality and high efficiency.
Description
Technical Field
The invention relates to the technical field of rubber sponge manufacturing, in particular to a forming device and a forming process of a rubber sponge barrel-shaped section.
Background
At present, the rubber sponge checks are widely applied, but the production of rubber products mostly adopts the traditional die and the traditional rubber sponge product forming process, and the rubber product production is divided into two types according to the filling amount of rubber materials in a die cavity of the forming die: 1) full mold vulcanization, namely, the rubber material is filled in the whole mold cavity; 2) the two processes have the problems of uncontrollable structure, non-uniform cell structure, high opening rate and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a device and a process for forming a rubber sponge barrel-shaped section, which can prepare the sponge barrel-shaped section with uniform and stable foam cell size, a micropore closed structure and low apparent density by optimizing and improving the device structure and the process, and have the advantages of simple structure, simple and convenient process, practicability and high efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a forming device of rubber sponge tubbiness section bar, includes stock mould plug 2, stock mould 1 and moulded die lower mould 3, the adaptation is cooperateed with the top of stock mould 1 and moulded die lower mould 3 respectively to design mill plug 2, the inside first U-shaped tubbiness of filling chamber 4 that is equipped with of stock mould 1, the inside second U-shaped tubbiness of filling chamber 5 that is equipped with of moulded die lower mould 3.
The shaping mold 1 and the forming mold lower mold 3 are the same in shape.
The size of the first U-shaped barrel-shaped filling cavity 4 of the stock mould 1 is smaller than that of the second U-shaped barrel-shaped filling cavity 5 of the lower mould 3 of the forming mould according to the ratio of the foaming ratio of the sizing material.
The stock mould 1 is divided into two half moulds which are longitudinally or obliquely detachably connected.
The detachable connection is a screw rod and nut connection.
The forming die lower die 3 and the forming die core rod 2 are made of steel.
The surface material requirement of the first U-shaped barrel-shaped filling cavity 4 of the stock mould 1 is poor in adhesiveness with the formed sponge rubber.
A molding process of a molding device based on a rubber sponge barrel-shaped section bar adopts a shaping, vulcanizing and post-treatment segmented molding process, and specifically comprises the following steps:
firstly, shaping:
1) blanking the rubber raw rubber compound according to the thickness of 2-3 mm;
2) uniformly coating the rubber raw rubber compound after blanking on the surface of the forming die core rod 2;
3) matching the forming die core rod 2 in the step one 2) with the shaping die 1, cold pressing at normal temperature, applying pressure of 0.1-1 Mpa through a flat vulcanizing machine at the temperature of 15-30 ℃, and shaping for 10-30 min; releasing and adjusting the pressure of the vulcanizing press, and removing the stock mold 1;
second, vulcanization
1) Matching the forming mold core rod 2 in the step one 3) with a forming mold lower mold 3, pre-vulcanizing and foaming under the conditions of pressure of 7-10MPa and 130 ℃ for 15min, and then heating to 160 ℃ for 30min for complete vulcanization and foaming;
2) turning off the press vulcanizer, naturally cooling the mold to normal temperature (15-30 ℃), releasing the pressure of the press vulcanizer, and taking out the vulcanized product;
thirdly, post-treatment:
1) putting the vulcanized product into an oven according to the following steps: the temperature is adjusted to be increased at normal temperature, 120 ℃,130 ℃, 140 ℃, 150 ℃, 160 ℃, 170 ℃, 180 ℃, 190 ℃ and 200 ℃ in sequence, wherein each temperature point is constant for 0.5 hour at the temperature of 120 ℃ to 190 ℃, and the temperature is constant for 4 hours at the temperature of 200 ℃ for post-treatment.
The raw rubber comprises but is not limited to one or more of silicon rubber, ethylene propylene diene monomer rubber, natural rubber, nitrile rubber or fluorosilicone rubber.
The invention has the beneficial effects that:
according to the invention, full mold vulcanization is carried out through the structural arrangement of the shaping mold core rod 2, the shaping mold 1 with the same shape and the forming mold lower mold 3, and the prepared sponge barrel-shaped section has uniform and stable foam hole size and high product quality consistency.
And secondly, by an improved sizing-vulcanization-post-treatment process, the sponge barrel-shaped section with uniform and stable foam hole size, a micropore closed structure and low apparent density can be prepared.
In conclusion, the invention has the advantages of stable and controllable product size and structure, simple process, practicality and high efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a molding apparatus of the present invention, wherein fig. 1(a) is a schematic structural diagram of a shaping mold, and fig. 1(b) is a schematic structural diagram of a molding mold.
In the figure: 1. shaping a mould; 2. forming a die core rod; 3. forming a lower die of the die; 4. a first U-shaped barrel-shaped filling chamber 4; 5. a second U-shaped barrel-shaped filling chamber 4.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a forming device of rubber sponge tubbiness section bar, includes stock mould plug 2, stock mould 1 and moulded die lower mould 3, the adaptation is cooperateed with the top of stock mould 1 and moulded die lower mould 3 respectively to design mill plug 2, the inside first U-shaped tubbiness of filling chamber 4 that is equipped with of stock mould 1, the inside second U-shaped tubbiness of filling chamber 5 that is equipped with of moulded die lower mould 3.
The shaping mold 1 and the forming mold lower mold 3 are the same in shape.
The size of the first U-shaped barrel-shaped filling cavity 4 of the stock mould 1 is smaller than that of the second U-shaped barrel-shaped filling cavity 5 of the lower mould 3 of the forming mould according to the ratio of the foaming ratio of the sizing material.
The stock mould 1 is divided into two half moulds which are longitudinally or obliquely detachably connected.
The detachable connection is a screw rod and nut connection.
The forming die lower die 3 and the forming die core rod 2 are made of steel.
The surface material requirement of the first U-shaped barrel-shaped filling cavity 4 of the stock mould 1 is poor in adhesion with the formed sponge rubber, and demoulding is easy.
A molding process of a molding device based on a rubber sponge barrel-shaped section bar adopts a shaping, vulcanizing and post-treatment segmented molding process, and specifically comprises the following steps:
first, shaping
1) Blanking the rubber raw rubber compound according to the thickness of 2-3 mm;
2) uniformly coating the rubber raw rubber compound after blanking on the surface of the forming die core rod 2;
3) matching the forming die core rod 2 in the step one 2) with the shaping die 1, cold pressing at normal temperature, applying pressure of 0.1-1 Mpa through a flat vulcanizing machine at the temperature of 15-30 ℃, and shaping for 10-30 min; releasing and adjusting the pressure of the vulcanizing press, and removing the stock mold 1;
second, vulcanization
1) Matching the forming mold core rod 2 in the step one 3) with a forming mold lower mold 3, pre-vulcanizing and foaming under the conditions of pressure of 7-10MPa and 130 ℃ for 15min, and then heating to 160 ℃ for 30min for complete vulcanization and foaming;
2) turning off the press vulcanizer, naturally cooling the mold to normal temperature (15-30 ℃), releasing the pressure of the press vulcanizer, and taking out the vulcanized product;
third, post-treatment
1) Putting the vulcanized product into an oven according to the following steps: the temperature is adjusted to be increased at normal temperature, 120 ℃,130 ℃, 140 ℃, 150 ℃, 160 ℃, 170 ℃, 180 ℃, 190 ℃ and 200 ℃ in sequence, wherein each temperature point is constant for 0.5 hour at the temperature of 120 ℃ to 190 ℃, and the temperature is constant for 4 hours at the temperature of 200 ℃ for post-treatment.
The raw rubber comprises but is not limited to one or more of silicon rubber, ethylene propylene diene monomer rubber, natural rubber, nitrile rubber or fluorosilicone rubber.
The working principle of the invention is as follows:
a shaping die 1 and a forming die lower die 3 of the device are respectively and independently arranged, and a first U-shaped barrel-shaped filling cavity 4 and a second U-shaped barrel-shaped filling cavity 5 are arranged according to the size of a sizing material foaming ratio; the molding process based on the device adopts the shaping, vulcanizing and post-treatment segmented molding process, and can prepare the sponge barrel-shaped section with uniform and stable foam hole size, micropores, closed pore structures and low apparent density through reasonable vulcanization conditions.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. The utility model provides a forming device of rubber sponge tubbiness section bar, is including design abrasive core stick (2), stock mould (1) and moulded die lower mould (3), its characterized in that: the shaping core grinding rod (2) is matched and adapted with the top of the shaping mold (1) and the top of the forming mold lower mold (3) respectively, a first U-shaped barrel-shaped filling cavity (4) is arranged inside the shaping mold (1), and a second U-shaped barrel-shaped filling cavity (5) is arranged inside the forming mold lower mold (3).
2. The molding apparatus of a rubber sponge barrel profile as claimed in claim 1, wherein: the shaping mold (1) and the forming mold lower mold (3) are the same in shape.
3. The apparatus for forming a rubber sponge barrel profile as claimed in claim 1 or 2, wherein: the size of a first U-shaped barrel-shaped filling cavity (4) of the shaping mold (1) is smaller than that of a second U-shaped barrel-shaped filling cavity (5) of the lower mold (3) of the forming mold according to the ratio of the foaming ratio of the sizing material.
4. The apparatus for forming a rubber sponge barrel profile as claimed in claim 1 or 2, wherein: the shaping mold (1) is divided into two half molds which are longitudinally or obliquely detachably connected.
5. The molding apparatus of a rubber sponge barrel profile as claimed in claim 4, wherein: the detachable connection is a screw rod and nut connection.
6. The apparatus for forming a rubber sponge barrel profile as claimed in claim 1 or 2, wherein: the lower die (3) and the forming die core rod (2) are made of steel.
7. The apparatus for forming a rubber sponge barrel section as claimed in claim 6, wherein: the steel is 45# steel.
8. The molding apparatus of a rubber sponge barrel profile as claimed in claim 1, wherein: the surface material requirement of the first U-shaped barrel-shaped filling cavity (4) of the stock mould (1) is poor in adhesiveness with the formed sponge rubber.
9. A molding process of a molding device based on a rubber sponge barrel-shaped section is characterized in that: the method adopts a shaping, vulcanizing and post-processing sectional forming process, and specifically comprises the following steps:
first, shaping
1) Blanking the rubber raw rubber compound according to the thickness of 2-3 mm;
2) uniformly coating the rubber raw rubber compound after blanking on the surface of the forming die core rod 2;
3) matching the forming die core rod 2 in the step one 2) with the shaping die 1, cold pressing at normal temperature, applying pressure of 0.1-1 Mpa through a flat vulcanizing machine at the temperature of 15-30 ℃, and shaping for 10-30 min; releasing and adjusting the pressure of the vulcanizing press, and removing the stock mold 1;
second, vulcanization
1) Matching the forming mold core rod 2 in the step one 3) with a forming mold lower mold 3, pre-vulcanizing and foaming under the conditions of pressure of 7-10MPa and 130 ℃ for 15min, and then heating to 160 ℃ for 30min for complete vulcanization and foaming;
2) turning off the press vulcanizer, naturally cooling the mold to normal temperature (15-30 ℃), releasing the pressure of the press vulcanizer, and taking out the vulcanized product;
third, post-treatment
1) Putting the vulcanized product into an oven according to the following steps: the temperature is adjusted to be increased at normal temperature, 120 ℃,130 ℃, 140 ℃, 150 ℃, 160 ℃, 170 ℃, 180 ℃, 190 ℃ and 200 ℃ in sequence, wherein each temperature point is constant for 0.5 hour at the temperature of 120 ℃ to 190 ℃, and the temperature is constant for 4 hours at the temperature of 200 ℃ for post-treatment.
10. The molding process of the molding device based on the rubber sponge barrel-shaped section bar as claimed in claim 9, wherein: the crude rubber in the steps 1) and 2) comprises one or more of but not limited to silicon rubber, ethylene propylene diene monomer, natural rubber, nitrile rubber or fluorosilicone rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010249739.1A CN111452277B (en) | 2020-04-01 | 2020-04-01 | Forming device and process of rubber sponge barrel-shaped section bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010249739.1A CN111452277B (en) | 2020-04-01 | 2020-04-01 | Forming device and process of rubber sponge barrel-shaped section bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111452277A true CN111452277A (en) | 2020-07-28 |
| CN111452277B CN111452277B (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010249739.1A Active CN111452277B (en) | 2020-04-01 | 2020-04-01 | Forming device and process of rubber sponge barrel-shaped section bar |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3566447A (en) * | 1967-02-06 | 1971-03-02 | British Industrial Plastics | Moulding equipment |
| GB1259349A (en) * | 1968-02-27 | 1972-01-05 | ||
| CN1257002A (en) * | 1998-12-17 | 2000-06-21 | 纪正贤 | Integrated formation method for foamed sole and around decorative strip and products thereof |
| CN1262169A (en) * | 1999-01-27 | 2000-08-09 | 纪正贤 | Technology for making middle foamed shoe sole of ethylene vinylacetate and its shoe body |
| CN1268541A (en) * | 2000-04-21 | 2000-10-04 | 江阴海达橡塑制品有限公司 | Sealing slip of rubber for ship and its preparation process |
| DE69813691T2 (en) * | 1997-08-05 | 2003-11-06 | Teijin Ltd | Method and device for molding an elastic fiber molding |
| CN103552192A (en) * | 2013-09-29 | 2014-02-05 | 安徽同丰橡塑工业有限公司 | Processing method of sponge rubber |
| CN106626201A (en) * | 2016-09-28 | 2017-05-10 | 山东大学 | Unilateral cavity free foaming method |
| CN108453993A (en) * | 2012-07-24 | 2018-08-28 | 赢创罗姆有限公司 | The new forming method and/or composite component prepared therefrom of PMI foamed materials |
-
2020
- 2020-04-01 CN CN202010249739.1A patent/CN111452277B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3566447A (en) * | 1967-02-06 | 1971-03-02 | British Industrial Plastics | Moulding equipment |
| GB1259349A (en) * | 1968-02-27 | 1972-01-05 | ||
| DE69813691T2 (en) * | 1997-08-05 | 2003-11-06 | Teijin Ltd | Method and device for molding an elastic fiber molding |
| CN1257002A (en) * | 1998-12-17 | 2000-06-21 | 纪正贤 | Integrated formation method for foamed sole and around decorative strip and products thereof |
| CN1262169A (en) * | 1999-01-27 | 2000-08-09 | 纪正贤 | Technology for making middle foamed shoe sole of ethylene vinylacetate and its shoe body |
| CN1268541A (en) * | 2000-04-21 | 2000-10-04 | 江阴海达橡塑制品有限公司 | Sealing slip of rubber for ship and its preparation process |
| CN108453993A (en) * | 2012-07-24 | 2018-08-28 | 赢创罗姆有限公司 | The new forming method and/or composite component prepared therefrom of PMI foamed materials |
| CN103552192A (en) * | 2013-09-29 | 2014-02-05 | 安徽同丰橡塑工业有限公司 | Processing method of sponge rubber |
| CN106626201A (en) * | 2016-09-28 | 2017-05-10 | 山东大学 | Unilateral cavity free foaming method |
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| CN111452277B (en) | 2022-07-01 |
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