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Extruder head

A technology of extruder and die, which is applied in the field of molding machine die to achieve the effects of improving the runner of the die, controlling the appearance of particle size well, and reducing the standby time of disassembly and assembly.

Active Publication Date: 2013-06-05
MIANYANG DONGFANG SPECIAL ENG PLASTIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the currently used twin-screw extruder heads in fiber-reinforced modified high-temperature resistant thermoplastic resins, and provide a molding head with stable production, reliable product quality, simple and reliable operation, and cost advantages

Method used

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  • Extruder head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Such as figure 1 As shown, the diverter block 1 of the present invention is used to connect the main engine and the machine head 2. There are 90 small holes 4 on the plate surface of the diverter block 1, and its aperture is 5 mm. The inlet and outlet edges of the small holes 4 have diameters The rounded corner is 0.25mm; there is a flow channel in the machine head 2, and the flow channel gradually transitions from the horizontal direction to the horizontal downward 30°, and the shape gradually transitions from a cylindrical structure to a spindle shape, and the material flows into the machine from the main machine through the small hole 4 In the head runner 5; the shaping die 3 is embedded in the die of the machine head for molding of plastic parts.

[0015] The ratio of the width of the inlet and outlet channels of the nozzle 2 of the machine head is 1.2, and the ratio of the height of the inlet and outlet h1 / h2 is 2.5; a cooling water pipe 6 is installed perpendicula...

Embodiment 2

[0017] Such as figure 1 As shown, the diverter block 1 of the present invention is used to connect the main engine and the machine head 2. There are 130 small holes 4 on the plate surface of the diverter block 1, and its aperture is 8 mm. The inlet and outlet edges of the small holes 4 have diameters It is 1mm rounded; there is a flow channel in the machine head 2, and the flow channel gradually transitions from the horizontal direction to the horizontal downward 45°, and the shape gradually transitions from a cylindrical structure to a spindle shape, and the material flows into the machine head from the main machine through the small hole 4 In the runner 5; the shaping die 3 is embedded in the die of the machine head for molding of plastic parts.

[0018] The width ratio of the inlet and outlet flow channels of the nozzle 2 of the machine head is 2.2, and the ratio of the inlet and outlet heights h1 / h2 is 3.5; a cooling water pipe 6 is installed perpendicular to the cross sec...

Embodiment 3

[0020] Such as figure 1 As shown, the diverter block 1 of the present invention is used to connect the main engine and the machine head 2. There are 100 small holes 4 on the plate surface of the diverter block 1, and its aperture is 6mm. The inlet and outlet edges of the small holes 4 have diameters The rounded corner is 0.75mm; there is a flow channel in the machine head 2, and the flow channel gradually transitions from the horizontal direction to the horizontal downward 40°, and the shape gradually transitions from a cylindrical structure to a spindle shape, and the material flows into the machine from the main machine through the small hole 4 In the head runner 5; the shaping die 3 is embedded in the die of the machine head for molding of plastic parts.

[0021] The width ratio of the inlet and outlet channels of the nozzle 2 die is 1.8, and the ratio h1 / h2 of the inlet and outlet heights is 3; two cooling water pipes 6 are arranged perpendicular to the cross section of th...

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Abstract

The invention discloses an extruder head, which comprises a split-flow block used for connecting a host machine with the extruder head, wherein the board of the extruder head is provided with a plurality of small holes; a runner which is arranged in the extruder head, has a shape of gradually transiting from a cylindrical structural shape to a spindle shape; and a shaping port mold is embedded into an extruder head port mold for shaping a plastic part. The extruder head has the advantages that: 1) by increasing the contact surface between the extruder head port mold and the shaping port mold,the time for increasing the temperature of the port mold to a preset temperature is reduced to be within 10 minutes from the original 30 minutes, the standby time for assembling and disassembling theport mold is greatly shortened, and the production efficiency is increased; 2) the problem of easily blocking the port mold is solved by using the port mold provided with multiple holes for feeding materials; 3) due to a round feeding hole, the phenomenon of fiber burrs easily occurring on material strips is eliminated; and 4) the extruder head is improved, thereby increasing the stability of shaped material flow, reducing the difference of outer diameters of different material strips, and achieving the excellent effect of controlling the grain diameter appearance.

Description

technical field [0001] The invention relates to an extruder head, in particular to a molding machine head used for high temperature resistant thermoplastic fiber reinforced modified thermoplastic resin. Background technique [0002] The twin-screw extruder is the most common equipment in the plastic modification industry. Its main function is to transform the molten material from a spiral motion state to a linear motion state, and at the same time form the necessary pressure and a certain shape. At present, the head of the extruder in the market usually adopts the method of hanging the die outside the head. The body of the head has a plurality of threaded holes through which the connecting bolts pass, and the head trough on the side of the head body communicates with the discharge hole. . When this method is used, it can meet the modification production requirements of general-purpose plastics and some engineering plastics, but when fiber-reinforced modification is performe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/30B29C48/345
Inventor 唐宇航赵智源万勇军叶南飚
Owner MIANYANG DONGFANG SPECIAL ENG PLASTIC