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Rotomolding process characteristics in the plastic products processing
by：CSSSLD
2021-01-23
Rotomolding technology in plastic products processing characteristics of
rotomolding technology is one of the many companies choose way of injection molded parts processing, deeply customer high praise. Today, under the jinan injection molding processing factory to introduce the rotomolding technology in the plastic processing features: 1, suitable for molding parts. Most of the plastic molding process, in the process of molding, plastic and mold in high pressure ( The pressure) , such as injection molding, compression molding, extrusion. Blow molding and so on, so the application of these large plastic parts molding process production, not only use a lot of pressure to bear a mould, make mould becomes heavy and complicated, and the plastic molding equipment design, manufacture and firm, tools and processing manufacturing difficulty increase, the cost increase. On the contrary, due to the strength of the roll forming process requires only the frame can support material, mould and the weight of the frame itself, and to prevent the mold closing force of material leakage, so even if rotomolding large-scale plastic parts, also need not use of heavy equipment and mould, tools and manufacture is convenient, short manufacturing cycle and low cost. 2, is suitable for many varieties, small batch plastic products processing. Due to the roll forming in the mold is not affected by external force, so the mold is simple, low cost, easy to manufacture. Roll-plastic equipment also has great mobility and a rolling machine, can install a large mold, also can arrange more than small chess sets; It can not only molding parts of different size, but also can at the same time forming size and shape are not the same products, plastic products as long as the same raw material, the thickness of the products, all can roll forming at the same time, so the roll forming process than other forming methods have great mobility. 3, the color of roll forming is easy to transform the products. Roll forming each time the materials directly to the mold, which makes the material after entering the products products from the mold, have needed to add the next molding material, therefore, when the color of the products we need to transform raw materials were not wasted a bit, also do not need to take time to clean up the machine and mold. When we use more than mold roll forming the same kinds of plastic products, also can add different colors in different mould materials, at the same time rotomolding out different colors of plastic products. 4, suitable for forming the hollow parts of complex shapes. Roll forming process, the material is coated, sedimentary gradually to the mold, on the inner surface of the products for the decorative pattern on the mold cavity and other fine structure has a strong ability to copy; At the same time because of the mold in the process of molding pressure from outside, can be directly made by adopting the method of precision casting with fine structure, shape, complex mold. 5, save raw materials. Wall thickness is uniform and plastic products chamfering place is a bit thick, so can play the efficiency of material and conducive to saving raw materials; In addition, in the process of roll forming, no flow, gate and other waste, once after debugging good, basic didn't back to the furnace charge in the process of production, so the process for the material utilization rate is high.
reduce injection mold processing defects of three methods?
injection mold machining namely forming and blocking tools, in addition to including shearing die and die cutting mould, at the time of processing, can appear sometimes defects, below small make up for the ways to reduce a few small injection mold processing defects.
a, rational use of cooling lubricant, cooling, washing, lubrication should play the role of the big three, cooling and lubrication to keep clean, so as to control the grinding heat within the scope of the permit, so as to avoid thermal deformation when plastic products processing. Improved grinding cooling conditions, such as by oil immersion wheel or inner cooling grinding wheel and other measures. The cutting fluid into the middle of the grinding wheel, cutting fluid can be directly into the grinding zone, give play to the role of effective cooling, so as to avoid surface burn plastic products processing.
2, reasonably choosing grinding dosage, the radial feeding of the smaller and precision grinding, fine grinding method. Such as appropriate to reduce the radial feeding and grinding wheel speed, strengthen the axial feeding, reduce grinding wheel and workpiece contact area, cooling conditions are improved, thus effective control of surface temperature rise.
3, the reasonable choice and dressing grinding wheel, using white corundum grinding wheel is better, it is the performance of hard and brittle, and easy to produce the new cutting edge, so the cutting force is small, the grinding heat is small, use on the granularity of medium size, such as better 46 ~ 60 mesh, using soft and soft on grinding wheel hardness ( ZR1, ZR2 and R1, R2) , that is, coarse granularity, low hardness of the grinding wheel, good self excitation can reduce heat cutting.
rotomolding technology is one of the many companies choose way of injection molded parts processing, deeply customer high praise. Today, under the jinan injection molding processing factory to introduce the rotomolding technology in the plastic processing features: 1, suitable for molding parts. Most of the plastic molding process, in the process of molding, plastic and mold in high pressure ( The pressure) , such as injection molding, compression molding, extrusion. Blow molding and so on, so the application of these large plastic parts molding process production, not only use a lot of pressure to bear a mould, make mould becomes heavy and complicated, and the plastic molding equipment design, manufacture and firm, tools and processing manufacturing difficulty increase, the cost increase. On the contrary, due to the strength of the roll forming process requires only the frame can support material, mould and the weight of the frame itself, and to prevent the mold closing force of material leakage, so even if rotomolding large-scale plastic parts, also need not use of heavy equipment and mould, tools and manufacture is convenient, short manufacturing cycle and low cost. 2, is suitable for many varieties, small batch plastic products processing. Due to the roll forming in the mold is not affected by external force, so the mold is simple, low cost, easy to manufacture. Roll-plastic equipment also has great mobility and a rolling machine, can install a large mold, also can arrange more than small chess sets; It can not only molding parts of different size, but also can at the same time forming size and shape are not the same products, plastic products as long as the same raw material, the thickness of the products, all can roll forming at the same time, so the roll forming process than other forming methods have great mobility. 3, the color of roll forming is easy to transform the products. Roll forming each time the materials directly to the mold, which makes the material after entering the products products from the mold, have needed to add the next molding material, therefore, when the color of the products we need to transform raw materials were not wasted a bit, also do not need to take time to clean up the machine and mold. When we use more than mold roll forming the same kinds of plastic products, also can add different colors in different mould materials, at the same time rotomolding out different colors of plastic products. 4, suitable for forming the hollow parts of complex shapes. Roll forming process, the material is coated, sedimentary gradually to the mold, on the inner surface of the products for the decorative pattern on the mold cavity and other fine structure has a strong ability to copy; At the same time because of the mold in the process of molding pressure from outside, can be directly made by adopting the method of precision casting with fine structure, shape, complex mold. 5, save raw materials. Wall thickness is uniform and plastic products chamfering place is a bit thick, so can play the efficiency of material and conducive to saving raw materials; In addition, in the process of roll forming, no flow, gate and other waste, once after debugging good, basic didn't back to the furnace charge in the process of production, so the process for the material utilization rate is high.
reduce injection mold processing defects of three methods?
injection mold machining namely forming and blocking tools, in addition to including shearing die and die cutting mould, at the time of processing, can appear sometimes defects, below small make up for the ways to reduce a few small injection mold processing defects.
a, rational use of cooling lubricant, cooling, washing, lubrication should play the role of the big three, cooling and lubrication to keep clean, so as to control the grinding heat within the scope of the permit, so as to avoid thermal deformation when plastic products processing. Improved grinding cooling conditions, such as by oil immersion wheel or inner cooling grinding wheel and other measures. The cutting fluid into the middle of the grinding wheel, cutting fluid can be directly into the grinding zone, give play to the role of effective cooling, so as to avoid surface burn plastic products processing.
2, reasonably choosing grinding dosage, the radial feeding of the smaller and precision grinding, fine grinding method. Such as appropriate to reduce the radial feeding and grinding wheel speed, strengthen the axial feeding, reduce grinding wheel and workpiece contact area, cooling conditions are improved, thus effective control of surface temperature rise.
3, the reasonable choice and dressing grinding wheel, using white corundum grinding wheel is better, it is the performance of hard and brittle, and easy to produce the new cutting edge, so the cutting force is small, the grinding heat is small, use on the granularity of medium size, such as better 46 ~ 60 mesh, using soft and soft on grinding wheel hardness ( ZR1, ZR2 and R1, R2) , that is, coarse granularity, low hardness of the grinding wheel, good self excitation can reduce heat cutting.
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