Rubber injection moulding cold flow path
A rubber injection and cold runner technology, applied in the cold runner field of rubber injection molding, can solve the problems of manual removal, lack of material density, cold runner can not meet the needs of long product processing, etc., to avoid aging rubber Effect
Inactive Publication Date: 2013-01-23
HENGYANG HUAYI MACHINERY
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Because the temperature of the rubber is high when it is plasticized, it receives heat from the hot plate and the mold when it passes through the nozzle, so that the temperature is further increased, and it is easy to approach the vulcanization temperature. When the injection is over, not only the rubber in the hot runner will be vulcanized, The rubber left in the nozzle is often vulcanized to form aged rubber. These aged rubber blocks the nozzle and affects the injection of the next mold. Manual removal is often required, which seriously affects production efficiency; the other is the cold runner. The cold runner used has only one inlet and four outlets. Due to the limitation of the length of the runner, it is only suitable for shorter products. The resistance in the channel increases, and the pressure decreases after entering the mold, which will easily cause defects such as lack of material or poor compactness of the product
Therefore, the cold runners currently used cannot meet the needs of longer product processing
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0016] As shown in the drawings: a cold runner for rubber injection molding, which includes a hot plate 11, on which a heat insulating plate 10 is arranged, and a first lower runner plate 5 is arranged on the heat insulating plate 10 , the second lower runner plate 6 and three backing plates 9,12,13, the three backing plates are respectively the first backing plate 9, the second backing plate 12, the third backing plate 13, the first lower runner plate 5 Set between the first backing plate 9 and the third backing plate 13, the second down runner plate 6 is set between the first backing plate 9 and the second backing plate 12, between the first down runner plate 5 and the second down runner plate Plate 6 and three backing plates 9, 12, 13 are provided with two backing plates 2, 14 and an upper runner plate 4, the two backing plates are respectively the fourth backing plate 2, the fifth backing plate 14, and the upper flow The channel plate 4 is arranged between the fourth backi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a rubber injection molding cold runner, which comprises a hot plate, a thermal insulation board is arranged on the hot plate, two lower runner plates and three padding plates are arranged on the thermal insulation board, two padding plates and one upper runner plate are respectively arranged on the two lower runner plates and three padding plates, a mounting plate is arranged on the two padding plates and upper runner plate, two gate sleeves are arranged on the mounting plate, two feeding openings that are arranged separately along the direction of length are arrangedabove the upper runner plate, the bottom part of the gate sleeve is connected with the runner inlet of the upper runner plate, two runner outlets of the upper runner plate are respectively connected with the main runner of two lower runner plates, four sub-runners are arranged below each feed inlet of the two lower runner plates, each sub-runner is connected with a cold runner nozzle body and a nozzle, a cooling channel is arranged below the runners of the upper runner plate and the two lower runner plates, moreover the cooling channel of the lower runner plate is communicated with each nozzle body.
Description
technical field [0001] The invention relates to a rubber injection molding runner, in particular to a rubber injection molding cold runner. Background technique [0002] In the existing rubber injection molding technology, one is to use a hot runner, and the injection device directly injects the plasticized rubber into the mold through the nozzle through the hot runner. Because the temperature of the rubber is high when it is plasticized, it receives heat from the hot plate and the mold when it passes through the nozzle, so that the temperature is further increased, and it is easy to approach the vulcanization temperature. When the injection is over, not only the rubber in the hot runner will be vulcanized, The rubber left in the nozzle is often vulcanized to form aged rubber. These aged rubber blocks the nozzle and affects the injection of the next mold. Manual removal is often required, which seriously affects production efficiency; the other is the cold runner. The cold ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/27B29C45/73
Inventor 都兴武
Owner HENGYANG HUAYI MACHINERY