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Injection molding processing enterprises to choose the cause of the hot runner
by：CSSSLD
2021-01-23
Wen injection tooling/VIP
a, the development of hot runner
in recent years, the hot runner technology in China gradually promotion, this is largely due to the mold to the European and American companies in China brought about by the rapid development of exports. In the European and American countries, has been dependent on the hot runner injection molding processing production technology.
hot runner system ( hotrunnersystems) Originated in no runner system of injection molding processing industry, as an advanced plastic injection molding processing technology, the widespread use of in the western developed countries can be traced back to the mid of the last century or even earlier.
2, 1) the principle of hot runner
The contrast of cold runner and hot runner is
the cold runner mold gate entrance and products between the parts. Plastic by injection pressure in the flow passage and its heat flow state and flow channel as part of the molding material, but it does not belong to the product. So when we design the mold should not only consider filling effect, and to consider how to save material by shortening, narrow passage, ideally in this way, but in practical application, it is difficult to achieve the best of both worlds.
hot runner is also called the free port is to point to in every time after the injection port of the plastic is not frozen, when plastic products mold release, don't need to port the runner out. Due to the flow of the plastic without coagulation, so the next time the injection port is still open. Briefly, hot runner is an extension of the injection molding machine nozzle.
2) The characteristics of the mould of hot flow path
why will have this kind of hot runner technology appear? Hot runner technology and can bring us what benefits? Familiar with injection molding process engineers know, conventional injection molding often has the following disadvantages:
a. Fill the difficulties;
b。 Thin-walled parts easy to deformation;
c。 Runner waste of raw materials;
d。 The multimode cavity mould do not match the quality of injection molded parts.
the emergence of hot runner technology, gives these problems provides a comparatively perfect solution, generally speaking, the hot runner has the following advantages:
advantages to 1) Reduce the cycle of the stamping shape
because there is no limit to the gating system, cooling time, stamping shape after curing can be out in a timely manner. Many small parts with hot runner mold production of thin-walled molding cycle can be under 5 seconds.
2)
save plastics raw material in the whole hot runner mold because no cold runner, so there is no material production costs. This was particularly significant for the application of plastic expensive project. Main hot runner manufacturers in the world, in fact, both oil and plastic raw materials is expensive in the world s got swift and violent development, because of the hot runner technology is an effective way to reduce waste to reduce raw material costs.
3) To reduce waste, improve product quality
in the process of forming mould of hot flow path, the plastic melt in the runner system to get accurate temperature control. Plastic can be more uniform state into the cavity, the result is consistent with the quality parts. Gate of hot runner molding parts are of good quality and low residual stress after demoulding, part deformation is small. So a lot of high quality products on the market are produced by hot runner mold.
4) To eliminate the follow-up process, be helpful for production automation
parts after molding mould of hot flow path is the finished product, don't need to trim the gate and recycling processing cold runner and other processes, production automation. Many products manufacturers at home and abroad are combined hot runner and automation to greatly improve production efficiency.
5) Expanding the scope of the injection molding process application
a lot of advanced plastic forming technology is developed based on hot runner technology. Such as PET preform manufacturing and multicolor in mould injection, injection process, STACKMOLD (a variety of materials Folding box mold) And so on.
although compared with the cold runner mold, hot runner mold has many obvious advantages, but the mould users also need to know the disadvantages of the mould of hot flow path. In summary there are the following:
shortcomings
1) Mold costs
hot runner components price is more expensive, hot runner mould cost could be greatly increased. If small parts production, mold tool cost ratio is high, no economic sense. Mould users for many developing countries, expensive is affect the hot runner mold hot runner system widely used one of the major problems.
2) Hot runner mould manufacture craft equipment demanding
hot runner mold need to make a guarantee precision processing machinery. With mold hot runner system integration and coordination with the extremely strict, or die in the process of production will appear a lot of serious problems.
3) Operation and maintenance of complex
compared with the cold runner mold, hot runner mold complex operation and maintenance. If use improper operation easy to damage the hot runner spare parts, make the production can't be, cause huge economic losses. For new users of mould of hot flow path, need a long time to use experience.
hot runner has many advantages, therefore, relatively fast development abroad, many plastic mold factory is the production of more than 50% of the mold using a hot runner technology, part of the mold factory and more than 80%. In China, this technology in nearly a decade to really be comprehensive promotion and application, with the continuous development of mould industry, used in the plastic mould of hot flow path proportion also gradually increase, but in general has not yet reached the proportion of foreign hot runner mold. Reply & other; Hot runner & throughout; , see more
don't use the technology of hot runner injection molding processing mould it is hard to export, this also caused a lot of mold manufacturer for hot runner technology shift in consciousness.
more wonderful to share: the future trend of the development of injection molding processing, directly click
or copy the link: http://www. csssld。 cn//html/2015/Info_1011/29。 HTML
nantong on plastic products factory's official website: http://www. csssld。 Cn / /
source network trimmer/injection molding processing and VIP
a, the development of hot runner
in recent years, the hot runner technology in China gradually promotion, this is largely due to the mold to the European and American companies in China brought about by the rapid development of exports. In the European and American countries, has been dependent on the hot runner injection molding processing production technology.
hot runner system ( hotrunnersystems) Originated in no runner system of injection molding processing industry, as an advanced plastic injection molding processing technology, the widespread use of in the western developed countries can be traced back to the mid of the last century or even earlier.
2, 1) the principle of hot runner
The contrast of cold runner and hot runner is
the cold runner mold gate entrance and products between the parts. Plastic by injection pressure in the flow passage and its heat flow state and flow channel as part of the molding material, but it does not belong to the product. So when we design the mold should not only consider filling effect, and to consider how to save material by shortening, narrow passage, ideally in this way, but in practical application, it is difficult to achieve the best of both worlds.
hot runner is also called the free port is to point to in every time after the injection port of the plastic is not frozen, when plastic products mold release, don't need to port the runner out. Due to the flow of the plastic without coagulation, so the next time the injection port is still open. Briefly, hot runner is an extension of the injection molding machine nozzle.
2) The characteristics of the mould of hot flow path
why will have this kind of hot runner technology appear? Hot runner technology and can bring us what benefits? Familiar with injection molding process engineers know, conventional injection molding often has the following disadvantages:
a. Fill the difficulties;
b。 Thin-walled parts easy to deformation;
c。 Runner waste of raw materials;
d。 The multimode cavity mould do not match the quality of injection molded parts.
the emergence of hot runner technology, gives these problems provides a comparatively perfect solution, generally speaking, the hot runner has the following advantages:
advantages to 1) Reduce the cycle of the stamping shape
because there is no limit to the gating system, cooling time, stamping shape after curing can be out in a timely manner. Many small parts with hot runner mold production of thin-walled molding cycle can be under 5 seconds.
2)
save plastics raw material in the whole hot runner mold because no cold runner, so there is no material production costs. This was particularly significant for the application of plastic expensive project. Main hot runner manufacturers in the world, in fact, both oil and plastic raw materials is expensive in the world s got swift and violent development, because of the hot runner technology is an effective way to reduce waste to reduce raw material costs.
3) To reduce waste, improve product quality
in the process of forming mould of hot flow path, the plastic melt in the runner system to get accurate temperature control. Plastic can be more uniform state into the cavity, the result is consistent with the quality parts. Gate of hot runner molding parts are of good quality and low residual stress after demoulding, part deformation is small. So a lot of high quality products on the market are produced by hot runner mold.
4) To eliminate the follow-up process, be helpful for production automation
parts after molding mould of hot flow path is the finished product, don't need to trim the gate and recycling processing cold runner and other processes, production automation. Many products manufacturers at home and abroad are combined hot runner and automation to greatly improve production efficiency.
5) Expanding the scope of the injection molding process application
a lot of advanced plastic forming technology is developed based on hot runner technology. Such as PET preform manufacturing and multicolor in mould injection, injection process, STACKMOLD (a variety of materials Folding box mold) And so on.
although compared with the cold runner mold, hot runner mold has many obvious advantages, but the mould users also need to know the disadvantages of the mould of hot flow path. In summary there are the following:
shortcomings
1) Mold costs
hot runner components price is more expensive, hot runner mould cost could be greatly increased. If small parts production, mold tool cost ratio is high, no economic sense. Mould users for many developing countries, expensive is affect the hot runner mold hot runner system widely used one of the major problems.
2) Hot runner mould manufacture craft equipment demanding
hot runner mold need to make a guarantee precision processing machinery. With mold hot runner system integration and coordination with the extremely strict, or die in the process of production will appear a lot of serious problems.
3) Operation and maintenance of complex
compared with the cold runner mold, hot runner mold complex operation and maintenance. If use improper operation easy to damage the hot runner spare parts, make the production can't be, cause huge economic losses. For new users of mould of hot flow path, need a long time to use experience.
hot runner has many advantages, therefore, relatively fast development abroad, many plastic mold factory is the production of more than 50% of the mold using a hot runner technology, part of the mold factory and more than 80%. In China, this technology in nearly a decade to really be comprehensive promotion and application, with the continuous development of mould industry, used in the plastic mould of hot flow path proportion also gradually increase, but in general has not yet reached the proportion of foreign hot runner mold. Reply & other; Hot runner & throughout; , see more
don't use the technology of hot runner injection molding processing mould it is hard to export, this also caused a lot of mold manufacturer for hot runner technology shift in consciousness.
more wonderful to share: the future trend of the development of injection molding processing, directly click
or copy the link: http://www. csssld。 cn//html/2015/Info_1011/29。 HTML
nantong on plastic products factory's official website: http://www. csssld。 Cn / /
source network trimmer/injection molding processing and VIP
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