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An extrusion device and rubber technology, which is applied in the field of rubber extrusion molding equipment, can solve problems such as safety hazards, explosions, and sulfur toxicity, and achieve the effects of enhancing conveying capacity, reducing direct damage, and ensuring stability
Pending Publication Date: 2022-04-22
QINGDAO UNIV OF SCI & TECH
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Problems solved by technology
[0003] At present, the final refining of rubber is mainly carried out on open mills or internal mixers. The factory is often a relatively closed and limited space. When adding vulcanization, powdery sulfur will diffuse into the air and explode when it reaches a certain concentration. Has a greater security risk
At the same time, sulfur is toxic. Long-term exposure to sulfur-filled air will cause various adverse reactions, such as cough, sore throat, skin inflammation, etc.
Method used
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Embodiment 1
[0048] Such as Figure 1-6 As shown, a rubber mixing extrusion device involved in this embodiment is composed of a main extruder 1 and an auxiliary extruder 2 connected at right angles, and the main extruder 1 uniformly compacts the compounded rubber and the auxiliary extruder 2 The vulcanizing agent and accelerator or sulfur-containing masterbatch are fully mixed and mixed at low temperature.
[0049] The main structure of the main extruder 1 involved in this embodiment includes a main mounting seat 10, a main base 11, a main motor 12, a main speed reducer 13, a main screw 14, a main barrel 15, a main frame 16, a main feeding port 17, Connection port 18, pin 19 and host head 20;
[0050]The upper surface of the main mounting base 10 is provided with a main base 11, the main base 11 is provided with a main motor 12 and a final reducer 13, the output end of the main motor 12 is connected with the input end of the final reducer 13, and the final drive 13 The output end of the ...
Embodiment 2
[0068] Such as Figure 7-8 As shown, as a preferred embodiment of the present invention, if there are reinforcing fillers such as short fibers in the rubber compound, the transmission pressurization section 1405 is replaced by a pressurization replacement section 14051, and the transmission decompression section 1407 is replaced by a decompression Replace paragraph 14071.
[0069] The pressure replacement section 14051 and the decompression replacement section 14071 change the thread shape of the original transfer section from trapezoid to triangle, so that the shear force of the rubber between the screw edge and the inner wall of the barrel increases, and the material shear and dispersion are strong. , Mixing evenly, can fully combine the reinforcing filler with the rubber-based material.
[0070] Combined with the anti-mixing section 1408, the material and the reinforcing filler are mixed, stretched and sheared longitudinally and transversely under the action of positive an...
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Abstract
The invention discloses a rubber mixing and extruding device which comprises a main extruder and an auxiliary extruder, the main extruder and the auxiliary extruder are in right-angle butt joint, and the main extruder fully mixes a rubber compound with a vulcanizing agent and an accelerant or sulfur-containing rubber master batch which are uniformly compacted by the auxiliary extruder and then mixes the rubber compound at a low temperature; the main screw is composed of a main mandrel and a main screw head, and the auxiliary screw is composed of an auxiliary mandrel and an auxiliary screw head. The feeding section and the mixing section are of single-head thread structures with the same thread section and are large in thread pitch, the compaction section is of a single-head thread structure with the small thread pitch, the transmission pressurization section and the transmission pressure reduction section are each of a gradual change type thread structure, the depth of a thread groove of the mixing section is small, two-way threads are machined on the surface of the mixing section, and the reverse mixing section is of a double-head two-way thread structure. The spiral groove depth of the reverse mixing section is deeper than that of the mixing section; the main extruder compacts materials through the small-pitch compaction section, the auxiliary extruder is pressurized and compacted through the flow channel with the flow decreasing gradually, and the mixing effect is enhanced through the combination mode of the gradually-changed threads of the transmission pressurization section, the pin and the internal threads of the machine barrel.
Description
technical field [0001] The invention relates to the technical field of rubber extrusion molding equipment, in particular to a rubber mixing extrusion device. Background technique [0002] At present, the final mixing of rubber is an indispensable and important step in rubber processing, which is to add sulfur and accelerator to the rubber compound without adding sulfur and accelerator after mixing by internal mixer or open mill, and make it evenly mixed After the film. [0003] At present, the final refining of rubber is mainly carried out on open mills or internal mixers. The factory is often a relatively closed and limited space. When adding vulcanization, powdery sulfur will diffuse into the air and explode when it reaches a certain concentration. Has a greater security risk. At the same time, sulfur is toxic. Long-term exposure to sulfur-filled air will cause various adverse reactions, such as cough, sore throat, and skin inflammation, after the human body has inhaled ...
Claims
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Application Information
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