Model: | All |
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Brand: | Suzhou Gongle |
Origin: | Made In China |
Category: | Industrial Supplies / Rubber & Plastics Machine |
Label: | - |
Price: |
US $10000
/ set
|
Min. Order: | 1 set |
Last Online:12 Jun, 2015 |
Substitutes the screw diameter of squeeze molding machine specifications and technical parameters of the size of.2. The screw length to diameter ratio L/Ds screw work part of the ratio of the length L and the screw diameter Ds called length to diameter ratio, when the other conditions must be (e.g., screw diameter), increase the length to diameter ratio means that increasing the length of the screw.L/Ds value is big, the temperature distribution is reasonable promotes the mixing and plasticizing of plastic, the plastic barrel at the moment of the heating time is longer, the plastic plasticizing will fully and more uniform.To improve the quality of machine model.If the plasticizing quality unchanged under the premise of length to diameter ratio increases, the screw rotation speed can be improved, thus increasing the amount of plastic extrusion.But, choose too large length to diameter ratio, screw power consumption will increase accordingly, and the screw and barrel of the processing and assembly machine increased difficulty;The possibility of screw bending will increase, will cause the screw and barrel inner surface of grinding, reduce the service life.In addition, for heat-sensitive plastic, with large length to diameter ratio due to the long residence time thermal decomposition, affect the quality of plastic plasticizing and extruding.Therefore, in make full use of advantages of length to diameter ratio increased after the selection according to the processing of plastic physical properties and the extrusion of requirements on the quality of our products.3. The compression ratio of the epsilon also called screw geometry compression ratio, is the first screw feeding screw groove volume and homogenizing the last spiral trough the ratio of the volume.It is made of plastic physical compression ratio - the product of density and the performance of the feeding density ratios.The squeeze molding machine compression is larger, the purpose is to make the granular plastic can fully plasticizing, compaction.Processing is not at the same time, the kinds of plastic compression ratio of choice should also be different according to the compression ratios, screw type can be divided into three types: isometric ranging from deep, deep deep not equidistant, ranging from not equidistant.Range of isometric deep is one of the most commonly used, the screw easy processing, plastic and barrel of the contact area is large, the heat transfer effect is good.
4. The screw thread and the screw Angle of cross section.Spiral Angle is too big to ensure plasticizing time, reduce the plasticizing quality of screw thread is too small, dense, screw groove volume decreases, and impact extrusion.For the feeding section, 30 o spiral Angle is the most suitable for powder;15 o spiral Angle in the square right material grain;17 o on the left and right spiral Angle on the spherical or columnar grains.Informed by uniform section of theoretical analysis, the spiral Angle of 30 when the extrusion flow rate is the highest.In fact in order to convenient manufacturing, spiral Angle, 17 more o41 '5. Pitch and screw groove width S W
Pitch of the screw's axial distance, screw groove width is perpendicular to the spiral groove of the screw edge width.Other conditions being the same, the change of pitch and groove width, not only decided to screw spiral Angle, but also affect the volume of screw groove, thus affecting the plastic extrusion amount and plasticizing degree.Spiral groove width increase means that the screw edge width decreases, and screw groove volume increases accordingly, extrusion quantity increase;Spiral rib width decreases at the same time, screw rotating friction resistance is reduced, so the power consumption is low.
Substitutes the screw diameter of squeeze molding machine specifications and technical parameters of the size of.2. The screw length to diameter ratio L/Ds screw work part of the ratio of the length L and the screw diameter Ds called length to diameter ratio, when the other conditions must be (e.g., screw diameter), increase the length to diameter ratio means that increasing the length of the screw.L/Ds value is big, the temperature distribution is reasonable promotes the mixing and plasticizing of plastic, the plastic barrel at the moment of the heating time is longer, the plastic plasticizing will fully and more uniform.To improve the quality of machine model.If the plasticizing quality unchanged under the premise of length to diameter ratio increases, the screw rotation speed can be improved, thus increasing the amount of plastic extrusion.But, choose too large length to diameter ratio, screw power consumption will increase accordingly, and the screw and barrel of the processing and assembly machine increased difficulty;The possibility of screw bending will increase, will cause the screw and barrel inner surface of grinding, reduce the service life.In addition, for heat-sensitive plastic, with large length to diameter ratio due to the long residence time thermal decomposition, affect the quality of plastic plasticizing and extruding.Therefore, in make full use of advantages of length to diameter ratio increased after the selection according to the processing of plastic physical properties and the extrusion of requirements on the quality of our products.3. The compression ratio of the epsilon also called screw geometry compression ratio, is the first screw feeding screw groove volume and homogenizing the last spiral trough the ratio of the volume.It is made of plastic physical compression ratio - the product of density and the performance of the feeding density ratios.The squeeze molding machine compression is larger, the purpose is to make the granular plastic can fully plasticizing, compaction.Processing is not at the same time, the kinds of plastic compression ratio of choice should also be different according to the compression ratios, screw type can be divided into three types: isometric ranging from deep, deep deep not equidistant, ranging from not equidistant.Range of isometric deep is one of the most commonly used, the screw easy processing, plastic and barrel of the contact area is large, the heat transfer effect is good.
4. The screw thread and the screw Angle of cross section.Spiral Angle is too big to ensure plasticizing time, reduce the plasticizing quality of screw thread is too small, dense, screw groove volume decreases, and impact extrusion.For the feeding section, 30 o spiral Angle is the most suitable for powder;15 o spiral Angle in the square right material grain;17 o on the left and right spiral Angle on the spherical or columnar grains.Informed by uniform section of theoretical analysis, the spiral Angle of 30 when the extrusion flow rate is the highest.In fact in order to convenient manufacturing, spiral Angle, 17 more o41 '5. Pitch and screw groove width S W
Pitch of the screw's axial distance, screw groove width is perpendicular to the spiral groove of the screw edge width.Other conditions being the same, the change of pitch and groove width, not only decided to screw spiral Angle, but also affect the volume of screw groove, thus affecting the plastic extrusion amount and plasticizing degree.Spiral groove width increase means that the screw edge width decreases, and screw groove volume increases accordingly, extrusion quantity increase;Spiral rib width decreases at the same time, screw rotating friction resistance is reduced, so the power consumption is low.
Payment Terms: | TT |
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