CN115847771A - Extrusion molding screw rod for plastic extruding machine and manufacturing method thereof - Google Patents
Extrusion molding screw rod for plastic extruding machine and manufacturing method thereof Download PDFInfo
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- CN115847771A CN115847771A CN202211416596.4A CN202211416596A CN115847771A CN 115847771 A CN115847771 A CN 115847771A CN 202211416596 A CN202211416596 A CN 202211416596A CN 115847771 A CN115847771 A CN 115847771A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000001125 extrusion Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 29
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 238000003801 milling Methods 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000002844 melting Methods 0.000 abstract description 6
- 230000008018 melting Effects 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The utility model provides an extrusion molding screw rod and preparation method for on extruding machine, the extrusion molding screw rod includes the body of rod and sets up the spiral shell arris on the body of rod, and the body of rod includes body of rod anterior segment, body of rod middle section and body of rod back end, the body of rod back end includes minor diameter section, back taper body section and big diameter section, and it is protruding to distribute along spiral shell arris direction of spiral on the body of rod that big diameter section corresponds. The manufacturing method comprises the following steps of manufacturing a rod body blank; manufacturing a convex column and milling a spiral groove; manufacturing a transmission key groove and a check groove, and manufacturing a conical head; making screw edges at the small-diameter section, the inverted cone section, the large-diameter section, the middle front section and the front rear section; manufacturing rod body connecting grooves on the rod bodies of the large-diameter section and the middle front section, and fixing the corresponding stirring bulges in the corresponding rod body connecting grooves; manufacturing a stirring lug and a spiral groove; cleaning the surface of the rod body. The invention has the advantages that: the prepared screw has good material stirring effect and realizes full melting of the material.
Description
Technical Field
The invention relates to the technical field of screw manufacturing, in particular to an extrusion molding screw used on an extruding machine and a manufacturing method thereof.
Background
The present chinese utility model patent application with application number CN202121053909.5 entitled "an extrusion molding screw structure" discloses an extrusion molding screw structure, including the body of rod and the spiral shell arris of setting on the body of rod, the spiral shell arris divide into the feed zone, melting section and ejection of compact section, and melting section spiral shell arris is two spiral arriss, and two spiral arriss comprise the first spiral arris and the second spiral arris that the interval set up, and the second spiral arris comprises the spiral arris strip that a N interval set up, and the axial cross-section of every spiral arris strip all is the triangle-shaped structure that can cut the material and improve material melting effect, and the pointed end of every spiral arris strip all is located the spiral cavity of first spiral arris. The utility model has the advantages that: the melting section is additionally provided with the screw ridge strips capable of improving the shearing effect of the materials, the screw ridge strips adopt a triangular structure and can cut the materials pushed to the screw ridge strips, the flowing distance of the materials is increased, the inner layer materials are turned outwards to the outer layer, and the materials are fully sheared and melted; the tip of spiral shell ribbing does not stretch out the spiral cavity, has avoided the tip to receive too big material extrusion force, has prolonged the life of spiral shell ribbing. However, the screw body lacks structural change, and the material has room for improvement of pressure change during the conveying process, so that the structure of the extrusion screw needs to be further improved.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide an extrusion molding screw for an extruder, which has a good material stirring effect and can fully melt the material, in view of the above-mentioned current state of the art.
The technical scheme adopted by the invention for solving the technical problems is as follows: this an extrusion molding screw rod for on extruding machine, including the body of rod and the spiral shell arris of setting on the body of rod, its characterized in that: the body of rod includes body of rod anterior segment, body of rod middle section and body of rod back end, the body of rod back end includes minor diameter section, back taper body section and big diameter section, and it has the stirring arch to distribute along spiral arris helical direction on the body of rod that big diameter section corresponds.
As an improvement, the stirring protrusion may preferably be a cylinder, and the stirring protrusion is fixed in the corresponding rod connecting groove.
Further improved, two groups of stirring bulges can be preferably arranged on the rod body between the adjacent screw edges.
As an improvement, the middle section of the rod body preferably comprises a middle front section and a middle rear section, the structure of the middle front section is the same as that of the large-diameter section, and the middle rear section is a convex column with a spiral groove distributed on the surface.
In a further improvement, the spiral groove can preferably consist of two groups of arc-shaped grooves which are arranged in a staggered manner, wherein the rear end part of one group of arc-shaped grooves is opened, and the front end part of the other group of arc-shaped grooves is opened.
As an improvement, the rod body front section preferably comprises a front section and a front rear section, a plurality of groups of stirring lugs are arranged on the front section along the rod body axial direction, and a single screw edge is arranged on the front rear section.
The improved structure is characterized in that spiral grooves capable of pushing materials to flow forwards can be distributed on the surface of the rod body between the single spiral ridges preferentially, the front end portions of the spiral grooves are communicated through spiral communication grooves, and the spiral directions of the communication grooves are opposite to the spiral directions of the spiral grooves.
In a further development, the connecting groove can preferably pass through the corresponding screw rib.
Further improve, each helical groove can be preferred to be formed by a plurality of bar grooves that are arranged in proper order along the helix direction and are bar-shaped on the body of rod development picture, and the adjacent bar grooves that constitute the same helical groove are independent each other.
The second technical problem to be solved by the present invention is to provide a method for manufacturing an extrusion molding screw used on an extruder, which has a good material stirring effect and can realize sufficient melting of materials, in view of the above-mentioned current state of the art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the manufacturing method of the extrusion molding screw is characterized by comprising the following steps: comprises the following steps of (a) preparing a solution,
1. making rod blank whose length is 37.3-37.6 times of screw diameter,
2. making a convex column on the rod body blank body at the corresponding position of the middle rear section, and milling a groove on the surface of the convex column to make a spiral groove;
3. manufacturing a transmission key groove and a check groove at one end of a rod body, manufacturing a conical head at the other end of the rod body, and processing the length of the rod body to be 37 times of the diameter of a screw edge, wherein the length of the transmission key groove is 2 times of the diameter of the screw edge, and the length of the check groove is 1.5 times of the diameter of the screw edge;
4. making screw edges at the small-diameter section, the inverted cone section, the large-diameter section, the middle front section and the front rear section;
5. manufacturing rod body connecting grooves on the rod bodies of the large-diameter section and the middle front section, and fixing the corresponding stirring bulges in the corresponding rod body connecting grooves;
6. manufacturing a stirring lug and a spiral groove;
7. and cleaning the surface of the rod body to finish the manufacture of the extrusion molding screw rod of the extruding machine.
Compared with the prior art, the invention has the advantages that: the rod body comprises a rod body front section, a rod body middle section and a rod body rear section, the rod body rear section comprises a small-diameter section, an inverted cone section and a large-diameter section, and the change of the diameter of the rod body means the change of the volume between the surface of the rod body and the inner wall of the machine barrel, so that the changed acting force can be applied to the materials moving forwards, and the materials can enter a molten state more quickly; the stirring bulges are distributed on the rod body corresponding to the large-diameter section along the spiral direction of the spiral edge, so that materials can be stirred better, the extrusion and rolling of the materials in the forward moving process are increased, the materials are more compact and uniform, and the material extrusion effect is improved; the stirring bulge adopts a detachable structure, and can be independently replaced after being worn, so that the manufacturing cost of the screw rod is saved; spiral grooves capable of pushing materials to flow forwards are distributed on the surface of the rod body between the single spiral ridges, so that the material discharging effect can be improved, and the extrusion molding efficiency is high; the front end part of the spiral groove is communicated through the spiral communicating groove, the spiral direction of the communicating groove is opposite to the spiral direction of the spiral groove, the flowing of materials is increased, the materials are contacted with each other more fully, and the materials are further enabled to be more compact and uniform.
Drawings
FIG. 1 is a front perspective view of an embodiment of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;
fig. 5 is an expanded view of the convex column portion of fig. 1.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 5, the extrusion molding screw for the plastic extruding machine of this embodiment includes the body of rod 1 and the screw thread ridge of setting on the body of rod 1, and the body of rod 1 includes body of rod anterior segment a, body of rod middle section B and body of rod back end C, and body of rod back end C includes minor diameter section C1, back taper section C2 and big diameter section C3, and it has stirring protrusion 11 to distribute along screw thread ridge spiral direction on the body of rod 1 that big diameter section C3 corresponds. The stirring arch 11 is the cylinder, and the stirring arch 11 is fixed in the body of rod spread groove that corresponds. Two groups of stirring bulges 11 are arranged on the rod body 1 between the adjacent screw edges.
The body of rod middle section B includes middle part anterior segment B1 and middle part back end B2, and the structure of middle part anterior segment B1 is the same with the structure of large diameter section C3, and middle part back end B2 is that surface distribution has spiral groove 13's projection 12. The spiral groove 13 is composed of two sets of arc-shaped grooves which are arranged in a staggered mode, wherein the rear end portion of one set of arc-shaped grooves is opened, and the front end portion of the other set of arc-shaped grooves is opened.
The body of rod anterior segment A includes anterior segment A1 and anterior back end A2, is provided with multiunit stirring lug 14 along the body of rod axial on anterior segment A1, is provided with single spiral shell arris on anterior back end A2. Spiral grooves 15 capable of pushing materials to flow forwards are distributed on the surface of the rod body between the single spiral edges, the front end parts of the spiral grooves 15 are communicated through spiral communicating grooves 16, and the spiral direction of the communicating grooves 16 is opposite to the spiral direction of the spiral grooves 15. The communication grooves 16 pass through the corresponding screw ridges. Each helical groove 15 is composed of a plurality of strip-shaped grooves which are sequentially arranged along the spiral line direction and are strip-shaped on the rod body expansion diagram, and adjacent strip-shaped grooves which form the same helical groove 15 are mutually independent.
The manufacturing method of the extrusion molding screw comprises the following steps,
1. making rod body blank whose length is 37.3-37.6 times of diameter of screw edge,
2. manufacturing a convex column 12 on the rod body blank corresponding to the middle rear section B2, and manufacturing a spiral groove 13 on the surface of the convex column by milling a groove;
3. manufacturing a transmission key groove and a check groove at one end of a rod body 1, manufacturing a conical head at the other end of the rod body 1, and processing the length of the rod body 1 to be 37 times of the diameter of a screw edge, wherein the length of the transmission key groove is 2 times of the diameter of the screw edge, and the length of the check groove is 1.5 times of the diameter of the screw edge;
4. manufacturing screw edges on the small-diameter section C1, the inverted cone section C2, the large-diameter section C3, the middle front section B1 and the front rear section A2;
5. manufacturing rod body connecting grooves on the rod body 1 of the large-diameter section C3 and the middle front section B1, and fixing the corresponding stirring protrusions 11 in the corresponding rod body connecting grooves;
6. manufacturing a stirring bump 14 and a spiral groove 15;
7. and cleaning the surface of the rod body to finish the manufacture of the extrusion molding screw rod of the extruding machine.
Claims (10)
1. An extrusion molding screw used on an extruding machine comprises a rod body (1) and screw edges arranged on the rod body (1), and is characterized in that: the utility model discloses a stirring rod, including body of rod anterior segment (A), body of rod middle section (B) and body of rod rear segment (C), body of rod rear segment (C) includes little diameter section (C1), back taper body section (C2) and big diameter section (C3), and it has stirring arch (11) to distribute along spiral arris helical direction on body of rod (1) that big diameter section (C3) corresponds.
2. An extrusion screw as in claim 1, wherein: the stirring bulge (11) is a cylinder, and the stirring bulge (11) is fixed in the corresponding rod body connecting groove.
3. An extrusion screw as in claim 2, wherein: two groups of stirring bulges (11) are arranged on the rod body (1) between the adjacent screw edges.
4. An extrusion screw as claimed in any one of claims 1 to 3, wherein: the rod body middle section (B) comprises a middle front section (B1) and a middle rear section (B2), the structure of the middle front section (B1) is the same as that of the large-diameter section (C3), and the middle rear section (B2) is a convex column (12) with a spiral groove (13) distributed on the surface.
5. An extrusion screw as in claim 4, wherein: the spiral groove (13) is composed of two groups of arc-shaped grooves which are arranged in a staggered mode, wherein the rear end portion of one group of arc-shaped grooves is opened, and the front end portion of the other group of arc-shaped grooves is opened.
6. An extrusion screw according to any one of claims 1 to 3, wherein: the rod body front section (A) comprises a front section (A1) and a front rear section (A2), a plurality of groups of stirring lugs (14) are arranged on the front section (A1) along the axial direction of the rod body, and a single screw rib is arranged on the front rear section (A2).
7. An extrusion screw as in claim 6, wherein: spiral grooves (15) capable of pushing materials to flow forwards are distributed on the surface of the rod body between the single spiral edges, the front end parts of the spiral grooves (15) are communicated through spiral communicating grooves (16), and the spiral direction of the communicating grooves (16) is opposite to the spiral direction of the spiral grooves (15).
8. An extrusion screw as in claim 7, wherein: the communication groove (16) penetrates through the corresponding screw ridge.
9. An extrusion screw as in claim 8, wherein: each spiral groove (15) is formed by a plurality of strip-shaped grooves which are sequentially arranged along the spiral line direction and are in a strip shape on a rod body expansion diagram, and adjacent strip-shaped grooves forming the same spiral groove (15) are mutually independent.
10. A method of making an extrusion screw of claims 1 to 9, wherein: comprises the following steps of (a) carrying out,
1. making rod body blank whose length is 37.3-37.6 times of diameter of screw edge,
2. manufacturing a convex column (12) on the rod body blank body at the corresponding position of the middle rear section (B2), and manufacturing a spiral groove (13) on the surface of the convex column by milling a groove;
3. manufacturing a transmission key groove and a check groove at one end of a rod body (1), manufacturing a conical head at the other end of the rod body (1), and processing the length of the rod body (1) to be 37 times of the diameter of a screw edge, wherein the length of the transmission key groove is 2 times of the diameter of the screw edge, and the length of the check groove is 1.5 times of the diameter of the screw edge;
4. manufacturing screw edges on the small-diameter section (C1), the inverted cone section (C2), the large-diameter section (C3), the middle front section (B1) and the front rear section (A2);
5. manufacturing rod body connecting grooves on the rod bodies (1) of the large-diameter section (C3) and the middle front section (B1), and fixing the corresponding stirring bulges (11) in the corresponding rod body connecting grooves;
6. manufacturing a stirring lug (14) and a spiral groove (15);
7. and cleaning the surface of the rod body to finish the manufacture of the extrusion molding screw rod of the extruding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211416596.4A CN115847771A (en) | 2022-11-13 | 2022-11-13 | Extrusion molding screw rod for plastic extruding machine and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211416596.4A CN115847771A (en) | 2022-11-13 | 2022-11-13 | Extrusion molding screw rod for plastic extruding machine and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115847771A true CN115847771A (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211416596.4A Pending CN115847771A (en) | 2022-11-13 | 2022-11-13 | Extrusion molding screw rod for plastic extruding machine and manufacturing method thereof |
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| CN (1) | CN115847771A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8616826D0 (en) * | 1985-07-10 | 1986-08-20 | Toshiba Machine Co Ltd | Screw |
| US6206559B1 (en) * | 1997-02-17 | 2001-03-27 | Mitsubishi Heavy Industries, Ltd. | Plasticating screw |
| CN106113457A (en) * | 2016-06-24 | 2016-11-16 | 广东金明精机股份有限公司 | For producing the plastic extruder of degradable mulch |
| CN208392602U (en) * | 2018-05-24 | 2019-01-18 | 东莞泰弘精密机械有限公司 | The screw rod of plasticizing easy to process |
| CN215151700U (en) * | 2021-05-28 | 2021-12-14 | 浙江光明塑料机械有限公司 | Combined structure of barrel screw |
| CN113799366A (en) * | 2021-09-16 | 2021-12-17 | 浙江华业塑料机械股份有限公司 | Screw and machine barrel combined device for plastic recovery |
| CN215283292U (en) * | 2021-06-25 | 2021-12-24 | 苏州艾盾合金材料有限公司 | Reinforced plastic extruder screw element |
| CN115230117A (en) * | 2022-07-16 | 2022-10-25 | 浙江光明塑料机械有限公司 | Manufacturing method of conical screw for conical double-cylinder |
| CN115742247A (en) * | 2022-11-13 | 2023-03-07 | 浙江华业塑料机械股份有限公司 | Extrusion molding screw and manufacturing method thereof |
| CN218749218U (en) * | 2022-11-16 | 2023-03-28 | 浙江华业塑料机械股份有限公司 | Wear-resisting extrusion molding screw rod |
| CN218749219U (en) * | 2022-11-16 | 2023-03-28 | 浙江华业塑料机械股份有限公司 | Efficient extrusion molding screw rod of extrusion molding |
-
2022
- 2022-11-13 CN CN202211416596.4A patent/CN115847771A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8616826D0 (en) * | 1985-07-10 | 1986-08-20 | Toshiba Machine Co Ltd | Screw |
| US6206559B1 (en) * | 1997-02-17 | 2001-03-27 | Mitsubishi Heavy Industries, Ltd. | Plasticating screw |
| CN106113457A (en) * | 2016-06-24 | 2016-11-16 | 广东金明精机股份有限公司 | For producing the plastic extruder of degradable mulch |
| CN208392602U (en) * | 2018-05-24 | 2019-01-18 | 东莞泰弘精密机械有限公司 | The screw rod of plasticizing easy to process |
| CN215151700U (en) * | 2021-05-28 | 2021-12-14 | 浙江光明塑料机械有限公司 | Combined structure of barrel screw |
| CN215283292U (en) * | 2021-06-25 | 2021-12-24 | 苏州艾盾合金材料有限公司 | Reinforced plastic extruder screw element |
| CN113799366A (en) * | 2021-09-16 | 2021-12-17 | 浙江华业塑料机械股份有限公司 | Screw and machine barrel combined device for plastic recovery |
| CN115230117A (en) * | 2022-07-16 | 2022-10-25 | 浙江光明塑料机械有限公司 | Manufacturing method of conical screw for conical double-cylinder |
| CN115742247A (en) * | 2022-11-13 | 2023-03-07 | 浙江华业塑料机械股份有限公司 | Extrusion molding screw and manufacturing method thereof |
| CN218749218U (en) * | 2022-11-16 | 2023-03-28 | 浙江华业塑料机械股份有限公司 | Wear-resisting extrusion molding screw rod |
| CN218749219U (en) * | 2022-11-16 | 2023-03-28 | 浙江华业塑料机械股份有限公司 | Efficient extrusion molding screw rod of extrusion molding |
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