CN-122008522-A - Exhaust flange

CN122008522ACN 122008522 ACN122008522 ACN 122008522ACN-122008522-A

Abstract

The invention relates to an exhaust flange plate, which comprises an exhaust plate body and a sub nozzle coaxially arranged at the front end of the exhaust plate body, wherein a front-back through material conveying channel is arranged at the positions of the axes of the exhaust plate body and the sub nozzle, a flow dividing shuttle is arranged in the material conveying channel of the exhaust plate body, a plurality of exhaust plate units are uniformly arranged on the periphery of the exhaust plate, each exhaust plate unit comprises an exhaust valve needle and a driving assembly for driving the exhaust valve needle to reset, the side wall of the exhaust plate body is provided with an exhaust hole, the inner side of the exhaust valve needle is inserted into the exhaust hole, the inner side end face of the exhaust valve needle reciprocates between the outer wall of the flow dividing shuttle and the inner wall of the material conveying channel, and the diameter of the inner side of the exhaust valve needle valve is 2-15 mu m smaller than the aperture of the exhaust hole. The invention has the advantages of more simplified structure, more reasonable exhaust, particularly convenient maintenance, easier part processing and faster manufacturing period.

Inventors

XIAO JIAYUN
XIAO RUI
XIAO ZILI

Assignees

积康螺杆制造（上海）股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260327
Priority Date: 20260326

Claims (6)

1. The utility model provides an exhaust flange, the front end coaxial mounting of ring flange has the son to penetrate and chews, ring flange and son penetrate the axle center department of chewing and be equipped with the defeated material passageway that link up from top to bottom, its characterized in that, the ring flange of exhausting includes the ring flange body, sets up the split shuttle in the defeated material passageway of ring flange body and evenly sets up at least one exhaust disk unit in the ring periphery of exhausting, and every exhaust disk unit includes an exhaust needle and is used for driving the drive assembly that the exhaust needle reset, the lateral wall of ring flange body is equipped with the exhaust hole, the inboard of exhaust needle is inserted and is established in the exhaust hole, just the inboard terminal surface of exhaust needle is reciprocating motion between split shuttle outer wall and defeated material passageway inner wall, the diameter of exhaust needle inboard is less than the aperture of exhaust hole 2~15 mu m.
2. The exhaust flange as claimed in claim 1, wherein the split shuttle sequentially comprises a split section, a shuttle body, a supporting section and a flow gathering section from back to front, the split section is cone-shaped, the outer diameter of the shuttle body is uniform and smaller than the inner diameter of the material conveying channel in the exhaust disc body, the outer diameter of the supporting section is the same as the inner diameter of the material conveying channel in the exhaust disc body, the supporting section and the flow gathering section are provided with fluid grooves which are distributed along the axial direction and are communicated front and back, and the flow gathering section is cone-shaped.
3. The exhaust flange according to claim 1, wherein the exhaust needle sequentially comprises a first needle body, a second needle body, a third needle body and a fourth needle body from the inner end to the outer end, wherein the first needle body is inserted into the exhaust hole, the diameter of the first needle body is 2-15 μm smaller than the aperture of the exhaust hole, the diameter of the second needle body is larger than the aperture of the exhaust hole, and the diameter of the third needle body is larger than the diameter of the fourth needle body.
4. A vent flange according to claim 3 wherein the drive assembly comprises a stop nut and a spring, wherein the stop nut is T-shaped and comprises a nut and a stud, wherein the stud is mounted on the sidewall of the vent disc body, a through hole is provided in the axial center of the stop nut, the through hole comprises at least a first hole and a second hole from the inner end to the outer end, the fourth needle is inserted into the second hole, the diameter of the third needle is greater than the inner diameter of the second hole is greater than the diameter of the fourth needle, the spring is placed in the first hole, the outer end of the spring is in contact with the inner wall of the outer end of the first hole, and the inner end of the spring is in contact with the outer end surface of the second needle.
5. The vent flange of claim 4 wherein the outer end surface of the third needle abuts the outer end inner wall of the first hole when the inner end surface of the first needle is flush with the inner end surface of the vent hole.
6. An exhaust flange according to any one of claims 1 to 5, wherein the number of exhaust disc units is 1 to 100.

Description

Exhaust flange Technical Field The invention relates to the technical field of injection molding equipment, in particular to an exhaust flange plate. Background In extrusion molding equipment, particularly in the fields of plastic extruders, rubber extruders and related polymer material processing, materials often release gases such as water vapor, residual monomers, low-molecular volatile matters and the like in the heating, pressurizing and melting processes. If the gases cannot be discharged in time, the gas is light, so that bubbles, silver wires and surface defects are generated in the product, and if the gas is heavy, hydrolysis reaction is possibly initiated, so that the material is degraded, and the mechanical property and the appearance quality of the product are seriously affected. Thus, venting performance is one of the key indicators for the advancement of extrusion equipment. The attachment flange is an important component of the screw head set and is commonly used to attach the nozzle and other structures. The conventional flange is designed into a closed runner, lacks a special exhaust structure, and cannot carry out degassing treatment on a melt which is about to enter a forming die, so that the defects of air holes, yellowing and the like of partial products are caused. Accordingly, there is a need in the art for an exhaust flange having good exhaust drying function. Disclosure of Invention The present invention is directed to an exhaust flange that overcomes the above-mentioned drawbacks of the prior art. In order to achieve the purpose of the application, the application provides the following technical scheme. In a first aspect, the application provides an exhaust flange, the front end of the flange is coaxially provided with a sub nozzle, the axes of the flange and the sub nozzle are provided with a material conveying channel which is penetrated from front to back, the exhaust flange comprises an exhaust disc body, a split shuttle arranged in the material conveying channel of the exhaust disc body and at least one exhaust disc unit uniformly arranged on the periphery of the exhaust disc, each exhaust disc unit comprises an exhaust valve needle and a driving assembly for driving the exhaust valve needle to reset, the side wall of the exhaust disc body is provided with an exhaust hole, the inner side of the exhaust valve needle is inserted into the exhaust hole, the inner side end face of the exhaust valve needle reciprocates between the outer wall of the split shuttle and the inner wall of the material conveying channel, and the diameter of the inner side of the exhaust valve needle is 2-15 μm smaller than the aperture of the exhaust hole. When the molten material moves to the position of the exhaust disk unit in the material conveying channel, gas is discharged from gaps between the exhaust valve needle and the exhaust hole, and the molten material cannot be discharged through the gaps, so that gas-liquid separation is realized, drying and density lifting of the material are realized, and product quality is improved. In an embodiment of the first aspect, the split shuttle sequentially comprises a split section, a shuttle body, a supporting section and a flow gathering section from back to front, the split section is cone-shaped, the outer diameter of the shuttle body is uniform and smaller than the inner diameter of the material conveying channel in the exhaust disc body, the outer diameter of the supporting section is identical to the inner diameter of the material conveying channel in the exhaust disc body, the supporting section and the flow gathering section are provided with fluid grooves which are distributed along the axial direction and are communicated front and back, and the flow gathering section is cone-shaped. The diversion section is used for breaking the molten material and enabling the molten material to uniformly flow between the inner wall of the material conveying channel and the diversion shuttle, so that the molten material is spread thin, gas is easier to run out of the molten material, and gas-liquid separation is easier. The supporting section is used for enabling the whole split shuttle to be stably placed in the material conveying channel. In one embodiment of the first aspect, the exhaust valve needle sequentially includes a first needle body, a second needle body, a third needle body and a fourth needle body from the inner end to the outer end, wherein the first needle body is inserted in the exhaust hole, the diameter of the first needle body is 2-15 μm smaller than the aperture of the exhaust hole, the diameter of the second needle body is larger than the aperture of the exhaust hole, and the diameter of the third needle body is larger than the diameter of the fourth needle body. In one embodiment of the first aspect, the driving assembly comprises a limit nut and a spring, wherein the limit nut is in a T shape and comprises a nut and a stud, the stud is ar