CN1339352A - Thermal pressing and forming method for rubber - Google Patents
Thermal pressing and forming method for rubber Download PDFInfo
- Publication number
- CN1339352A CN1339352A CN 00122822 CN00122822A CN1339352A CN 1339352 A CN1339352 A CN 1339352A CN 00122822 CN00122822 CN 00122822 CN 00122822 A CN00122822 A CN 00122822A CN 1339352 A CN1339352 A CN 1339352A
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- rubber
- die cavity
- thermal pressing
- forming method
- molds
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- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The rubber thermal pressing and forming process includes heating rubber to molten state inside one heat smelting chamber in a casting machine, casting to a mold cavity and thermal pressing to form. In different position of the mold cavity, different amount of rubber may be set. The process can produce homogeneous product in short time. Only by altering the mold and completing regulation and setting, different product may be obtained, and this raises production efficiency.
Description
The present invention relates to a kind of thermal pressing and forming method for rubber, relate in particular to a kind of thermal pressing and forming method for rubber that the molten rubber material is injected die cavity and extrusion forming.
Existing rubber product forming (as shown in Figure 4) is when the upper and lower mould die sinking of set of molds 9, manually inserts the sheet or the block rubber 92 of weighing in advance in die cavity 91, the extrusion forming of then heating again.It is by rule of thumb according to the different size of mould, shape in wherein inserting rubber 92, but, this rubber 92 of manually inserting varying number by rule of thumb, each material amount partly in the both consuming time also wayward die cavity 91, cause to be easy to generate flash after the matched moulds pressurization and to cause too much burr, or lacking the material incomplete situation that causes being shaped occurs.The flowability of adding rubber 92 is not good, so be difficult to effectively control the uniformity of finished product, operating efficiency is poor, and have the mould of different size, appearance die cavity 91 and operator's transposing because of replacing at every turn, all must test position, size, quantity that tablet is placed again, more consume material and time.
In addition, the environment temperature height of rubber product forming, and be full of pungent gas is arranged, the operator is in this kind environment for a long time manually to insert material, and health is had sizable harm.
For this reason, main purpose of the present invention provides a kind of rubber hot press molding method, and it makes the elastomeric material fusion by casting machine, and the elastomeric material with fusion injects die cavity again, and can insert different material amounts in the die cavity diverse location.It not only accurately saves time, and also can obtain the product of quality homogeneous, has the mould of different size, moulding die cavity or operator's transposing if change, and also only needs can obtain consistent product after the adjustment setting is finished, and has improved production efficiency in a large number.
Another object of the present invention provides a kind of thermal pressing and forming method for rubber that can reduce operator's work load.
A kind of thermal pressing and forming method for rubber provided by the invention, it comprises:
(1) elastomeric material is inserted in the heat fusing chamber of a casting machine, rubber is heated to molten condition by this heat fusing chamber;
(2) open a set of molds, this set of molds has a die cavity at least;
(3) passage that will be communicated with casting machine heat fusing chamber stretches into above the die cavity of set of molds, by the rubber injection die cavity of passage with fusion, and according to the different sizes of die cavity, an amount of rubber of position injection;
(4) close die group is so that the rubber-moulding in the die cavity is complete.
Describe the present invention below in conjunction with drawings and Examples.
Fig. 1 is an action flow chart of the present invention;
Fig. 2 is the schematic diagram that the passage of casting machine of the present invention moves into set of molds;
Schematic diagram when Fig. 3 is a set of molds mold closing of the present invention;
Fig. 4 is the schematic diagram of the rubber moulding method used always.
Embodiment
As shown in Figures 1 to 3, a kind of thermal pressing and forming method for rubber of the present invention, it is provided with a set of molds 2, this set of molds comprises that a upper bolster 21 and is located at the die shoe 22 of upper bolster 21 belows, these upper bolster 21 bottoms are provided with a patrix 211, and the top of this die shoe 22 is provided with a counterdie 221, and this counterdie 221 has two die cavitys 23.
Thermal pressing and forming method for rubber of the present invention comprises the following steps:
(1) step 11: elastomeric material 4 is inserted in the heat fusing chamber 31 of a casting machine 3, rubber 4 is heated to molten condition by this heat fusing chamber 31;
(2) step 12: opening mold group 2, and upper and lower mould 211,221 is separated;
(3) step 13: the passage 32 that will be communicated with casting machine heat fusing chambers 31 3 stretches into die cavity 23 tops of counterdie 221, by the rubber 4 injection die cavitys 23 of this passage 32 with fusion, and according to die cavity 23 different sizes, an amount of rubber 4 of position injection.As shown in Figure 2, it blocks from passage 32 number in the hole 34 of flowing out rubber 4 by a sliding sleeve 33 of being located at passage 32, and the speed that moves during casting machine 3 cast is adjusted the material amount.The number in the hole of blocking 34 the more, translational speed is faster, and the material amount is then fewer, otherwise the material amount then the more.Therefore can in die cavity 23, load the rubber 4 of accurate material amount;
(4) step 14: close die group 2, and do on-off action with making upper and lower mould 211,221 repeatedly little displacements, so that the rubber 4 in the die cavity 23 is fitted fully with die cavity 23, and rubber inside can residual air, and then make the moulding of finished product and lines clear, until hot-forming (as shown in Figure 3) fully.
Because the present invention injects die cavity 23 after with rubber 4 fusions, therefore can inject accurate material amount at die cavity 23 diverse locations, size, and the difference of material opsition dependent is uniformly distributed in the middle of the die cavity 23, the material that is the injection of die cavity 23 volume larger parts is many, it can overcome local flash or scarce situation of expecting that rubber 4 causes because of flowability is not good, to obtain the product of quality homogeneous.
In sum, the present invention is injected in the die cavity 23 after making elastomeric material 4 fusions by casting machine 3 again, and can insert different material amounts in die cavity 23 diverse locations, and it not only accurately saves time, and also can obtain the product of homogeneous.Have the mould of different size, moulding die cavity or operator's transposing if change, also only need after the adjustment setting is finished, can obtain consistent product, improved production efficiency in a large number.In addition, the present invention replaces artificial with casting machine 3, can reduce operator's burden.
Claims (3)
1, a kind of thermal pressing and forming method for rubber, it comprises:
Step 1: elastomeric material is inserted in the heat fusing chamber of a casting machine, rubber is heated to molten condition by this heat fusing chamber;
Step 2: open a set of molds, this set of molds has a die cavity at least;
Step 3: the passage that will be communicated with casting machine heat fusing chamber stretches into the die cavity top of set of molds, by the rubber injection die cavity of this passage with fusion, and according to the different sizes of die cavity, an amount of rubber of position injection;
Step 4: the close die group, so that the rubber-moulding in the die cavity is complete.
2, according to the thermal pressing and forming method for rubber of claim 1, wherein said step 3 is to block the hole count that passage flows out rubber with a sliding sleeve of being located at passage, and the speed that moves during the casting machine cast is adjusted the material amount.
3, according to the thermal pressing and forming method for rubber of claim 1, wherein said step 4 also comprises the on-off action of the repeatedly little displacement of set of molds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001228226A CN1170666C (en) | 2000-08-28 | 2000-08-28 | Thermal pressing and forming method for rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001228226A CN1170666C (en) | 2000-08-28 | 2000-08-28 | Thermal pressing and forming method for rubber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1339352A true CN1339352A (en) | 2002-03-13 |
| CN1170666C CN1170666C (en) | 2004-10-13 |
Family
ID=4589337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001228226A Expired - Fee Related CN1170666C (en) | 2000-08-28 | 2000-08-28 | Thermal pressing and forming method for rubber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1170666C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110303633A (en) * | 2019-05-14 | 2019-10-08 | 嘉兴济铭商贸有限公司 | A kind of butadiene-styrene rubber mobile phone shell |
-
2000
- 2000-08-28 CN CNB001228226A patent/CN1170666C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110303633A (en) * | 2019-05-14 | 2019-10-08 | 嘉兴济铭商贸有限公司 | A kind of butadiene-styrene rubber mobile phone shell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1170666C (en) | 2004-10-13 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |