CN215151698U - Combined structure of conical double-screw machine barrel - Google Patents
Combined structure of conical double-screw machine barrel Download PDFInfo
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- CN215151698U CN215151698U CN202121182757.9U CN202121182757U CN215151698U CN 215151698 U CN215151698 U CN 215151698U CN 202121182757 U CN202121182757 U CN 202121182757U CN 215151698 U CN215151698 U CN 215151698U
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- 238000002844 melting Methods 0.000 claims abstract description 91
- 230000008018 melting Effects 0.000 claims abstract description 91
- 238000007599 discharging Methods 0.000 claims abstract description 50
- 238000010992 reflux Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims 9
- 239000011295 pitch Substances 0.000 description 12
- 230000010006 flight Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
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Abstract
A combined structure of a conical double-screw machine barrel comprises the machine barrel and two conical screws, wherein conical double-through holes are axially arranged in the middle of the machine barrel, each screw comprises a rod body and a screw ridge, the screw ridge is divided into a feeding section, a melting section and a discharging section, the melting section comprises a melting section, a melting section and a melting section, the melting section and the melting section are connected end to end, the melting section and the melting section are sequentially arranged in a separated mode, and the tail of the first melting section and the position of the second melting section are provided with reflux groove sections, the reflux groove sections are divided into a first reflux groove section and a second reflux groove section, the first reflux groove section is positioned on the second melting section, the second reflux groove section is positioned at the joint of the second melting section and the first melting section, the depth of the first reflux groove section is kept the same, the depth of the second reflux groove section is gradually reduced towards the feeding end of the rod body along the axial direction of the rod body, and the ratio of the lengths of the first reflux groove section and the second reflux groove section is 1.75: 1-2: 1. The utility model has the advantages that: the material flows back smoothly, and the material is fully melted.
Description
Technical Field
The utility model relates to an injection molding machine preparation technical field especially indicates a integrated configuration of awl twin-screw barrel.
Background
The prior Chinese utility model patent with the application number of CN201420226723.9 entitled tapered twin-screw of a machine barrel discloses a tapered twin-screw of a machine barrel, which comprises a screw rod body; the two ends of the screw rod body are respectively a big end and a small end; the screw rod body consists of 5 screw rod sections with different screw pitches; the screw section is arranged between the large end and the small end; the size of the big end is 66.88 mm; the size of the small end is 29.7-29.9 mm. The conical double screw of the machine barrel of the utility model increases the size of the big end and slightly reduces the size of the small end, thereby improving the compression ratio of the screw; the existing machine can be used without great change, thereby improving the plasticizing performance and accelerating the production efficiency. However, the material handling effect of the conical twin screw is still not ideal during processing, and therefore the structure of the conical twin screw needs to be further improved.
Disclosure of Invention
The utility model aims to solve the technical problem that it is smooth and easy to provide a material at the backward flow of melting section to above-mentioned prior art current situation, can realize the integrated configuration of the abundant molten awl twin-screw barrel of material.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: this integrated configuration of awl twin-screw barrel, including barrel and two conical screw, be provided with the awl double-pass hole that can pass the screw rod in barrel middle part axial, the screw rod includes the body of rod and sets up the flight on body of rod surface, the flight divide into feeding section, melting section and ejection of compact section, its characterized in that: the melting section comprises a melting section, a melting section and a melting section, the melting section and the melting section are connected end to end, the melting section and the melting section are sequentially arranged in a separated mode, backflow groove sections are arranged at the tail of the melting section and the position of the melting section, the direction of rotation of a backflow groove of the backflow groove section is opposite to the direction of rotation of a screw edge, the backflow groove section is divided into a backflow groove section and a backflow groove section, the backflow groove section is located on the melting section, the backflow groove section is located at the connection position of the melting section and the melting section, the depth of the backflow groove section is kept the same, the depth of the backflow groove section is gradually reduced towards the feeding end of the rod body along the axial direction of the rod body, and the length ratio of the backflow groove section to the backflow groove section is 1.75: 1-2: 1.
As a modification, the five backflow grooves are distributed on the spiral rib at equal intervals.
The radial section of the backflow groove is in an isosceles triangle shape, and the top angle of the bottom of the isosceles triangle is a fillet.
The further improvement, the distance from the bottom of the fillet of one section of the reflux groove to the surface of the rod body is 4mm, and the distance from the bottom of the fillet of the second section of the reflux groove to the surface of the rod body is 4-14 mm.
As an improvement, the three melting sections are single screw ridges, the four melting sections are three screw ridges, the width of the screw ridge of the four melting sections is larger than that of the screw ridge of the three melting sections, the width of the screw ridge of the three melting sections is the same as that of the screw ridge of the two melting sections, and the pitch of the screw ridges of the four melting sections is larger than that of the screw ridge of the three melting sections.
As an improvement, the discharging section is a three-screw-edge section, the discharging section comprises a first discharging section, a second discharging section and a third discharging section, the first discharging section, the second discharging section and the third discharging section are sequentially connected end to end, and the screw-edge intervals of the first discharging section, the second discharging section and the third discharging section are sequentially increased.
Further improvement, the widths of the spiral edges of the first discharging section, the second discharging section and the third discharging section are sequentially increased.
As an improvement, the feeding section is a double-spiral edge, the feeding section comprises a feeding first section, a feeding second section, a feeding third section and a feeding fourth section, the feeding first section, the feeding second section, the feeding third section and the feeding fourth section are sequentially connected end to end, and the spiral edge intervals of the feeding first section, the feeding second section, the feeding third section and the feeding fourth section are sequentially reduced.
Further improvement, the widths of the spiral edges of the first feeding section, the second feeding section, the third feeding section and the fourth feeding section are reduced in sequence.
As an improvement, the machine barrel consists of a first machine barrel section, a second machine barrel section, a third machine barrel section and a fourth machine barrel section, the diameters of the first machine barrel section, the second machine barrel section, the third machine barrel section and the fourth machine barrel section are sequentially reduced, spiral grooves capable of installing temperature control pipelines are formed in the outer surfaces of the four machine barrel sections, alloy layers are arranged on the inner walls of conical double-pass holes corresponding to the fourth machine barrel section and the rear half part of the third machine barrel section, and the ratio of the length of the alloy layers to the total length of the machine barrel is 0.3: 1.
Compared with the prior art, the utility model has the advantages of: the melting section is provided with the backwash tank, makes the part complete melting material backward flow to melting one section department reheating melting not, realizes the abundant melting of material, and the degree of depth of backwash tank two-stage process reduces gradually to body of rod feed end along the body of rod axial, and the material returns to the material top layer when the material backward flow, and the material backward flow is more smooth to axial and radial movement when having realized the material, make the material heating pressurized more abundant, help improving material treatment effect.
Drawings
FIG. 1 is a front perspective view of a screw according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line J-J of FIG. 1;
FIG. 3 is a front perspective view of the barrel of FIG. 1 with the screw engaged;
FIG. 4 is a side elevational view of FIG. 3;
fig. 5 is a side elevational view of fig. 3 at another angle.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 to 5, the combined structure of the conical twin-screw cylinder of this embodiment includes a cylinder and two conical screws, a conical double-pass hole 22 capable of passing through the screws is axially disposed in the middle of the cylinder, the screws include a rod body 1 and a screw ridge disposed on the surface of the rod body 1, the screw ridge is divided into a feeding section a, a melting section B and a discharging section C, the melting section B includes a melting section B1, a melting section B2, a melting section B3 and a melting section B4, the melting section B1 and the melting section B2 are connected end to end, the melting section B2, the melting section B3 and the melting section B4 are sequentially separated, a backflow groove section D is disposed at the tail of the melting section B1 and the melting section B2, the backflow groove 11 of the backflow groove section D has a rotation direction opposite to the rotation direction of the screw ridge, the backflow groove section D is divided into a backflow groove section D1 and a backflow groove D2, a backflow groove section D1 is disposed on the melting section B2, and a melting section B2 of the melting section B1 is connected to the melting section B1, the depth of the first section D1 of the reflux groove is kept the same, the depth of the second section D2 of the reflux groove is gradually reduced towards the feeding end of the rod body 1 along the axial direction of the rod body 1, and the length ratio of the first section D1 of the reflux groove to the second section D2 of the reflux groove is 1.75: 1-2: 1. Five reflux grooves 11 are arranged, and the five reflux grooves 11 are circumferentially distributed on the screw ridge at equal intervals. The radial cross section of the reflux groove 11 is an isosceles triangle, and the bottom vertex angle of the isosceles triangle is a fillet. The distance H1 from the bottom of the fillet of one section of the reflux groove D1 to the surface of the rod body is 4mm, and the distance from the bottom of the fillet of the two sections of the reflux grooves D2 to the surface of the rod body is 4-14 mm.
The three melting sections B3 are single spiral ribs, the four melting sections B4 are three spiral ribs, the width of the spiral rib of the four melting sections B4 is larger than that of the spiral rib of the three melting sections B3, the width of the spiral rib of the three melting sections B3 is the same as that of the spiral rib of the two melting sections B2, and the pitch of the spiral ribs of the four melting sections B4 is larger than that of the spiral rib of the three melting sections B3. The flight width K8 of the three melted segments was 11.2mm, the flight pitch L10 of the three melted segments was 30mm, the flight width K9 of the four melted segments was 15.4mm, and the flight pitch L11 of the four melted segments was 52 mm.
The discharging section C is a three-spiral-edge structure, the discharging section C comprises a discharging section C1, a discharging section C2 and a discharging section C3, the discharging section C1, the discharging section C2 and the discharging section C3 are sequentially connected end to end, and the spiral-edge intervals of the discharging section C1, the discharging section C2 and the discharging section C3 are sequentially increased. The screw widths of the first discharging section C1, the second discharging section C2 and the third discharging section C3 are increased in sequence. The screw width K1 of the first discharging section is 12.8mm, the screw width K2 of the second discharging section is 13.6mm, and the screw width K3 of the third discharging section is 14.3 mm. The pitch L3 of the flights of the first discharge section is 40mm, the pitch L4 of the flights of the second discharge section is 43mm, and the pitch L5 of the flights of the third discharge section is 47.33 mm. The length of the first discharging section C1 is 200, the length of the second discharging section C2 is 215mm, and the length of the third discharging section C3 is 195 mm.
The feeding section A is double spiral edges, the feeding section A comprises a feeding section A1, a feeding section A2, a feeding section A3 and a feeding section A4, the feeding section A1, the feeding section A2, the feeding section A3 and the feeding section A4 are sequentially connected end to end, and the spiral edge spaces of the feeding section A1, the feeding section A2, the feeding section A3 and the feeding section A4 are sequentially reduced. The widths of the spiral edges of the feeding first section A1, the feeding second section A2, the feeding third section A3 and the feeding fourth section A4 are reduced in sequence. The flight width K4 of the first feed stage was 10mm, the flight width K5 of the second feed stage was 9mm, the flight width K6 of the third feed stage was 8mm, and the flight width K7 of the fourth feed stage was 7 mm. The pitch L6 of the flights in the first stage of feeding was 29mm, the pitch L7 of the flights in the second stage of feeding was 27mm, the pitch L8 of the flights in the third stage of feeding was 25mm, and the pitch L9 of the flights in the fourth stage of feeding was 23 mm. The length of the feeding section A1 is 340mm, the length of the feeding section A2 is 115mm, the length of the feeding section A3 is 115mm, and the length of the feeding section A4 is 115 mm.
The machine barrel consists of a machine barrel section E, a machine barrel section F, a machine barrel section G and a machine barrel section H, the diameters of the machine barrel section E, the machine barrel section F, the machine barrel section G and the machine barrel section H are sequentially reduced, spiral grooves 21 capable of installing temperature control pipelines are formed in the outer surface of the machine barrel section H, an alloy layer is arranged on the inner wall of a conical double through hole corresponding to the machine barrel section H and the rear half part of the machine barrel section G, and the ratio of the length L1 of the alloy layer to the total length L2 of the machine barrel is 0.3: 1. The total length of the machine barrel is 2020mm, the length of the machine barrel second section F is 507mm, the length of the machine barrel third section G is 406mm, the length of the machine barrel fourth section H is 451mm, the aperture of the cone double through hole on the discharge port side of the machine barrel is 83mm, and the aperture of the cone double through hole on the feed port side of the machine barrel is 165 mm.
Claims (10)
1. The utility model provides a integrated configuration of awl twin-screw barrel, includes barrel and two conical screw, is provided with awl double through-hole (22) that can pass the screw rod in barrel middle part axial, the screw rod includes the body of rod (1) and sets up the flight on the body of rod (1) surface, the flight divide into feed section (A), melting section (B) and ejection of compact section (C), its characterized in that: the melting section (B) comprises a melting section (B1), a melting section (B2), a melting section (B3) and a melting section (B4), the melting section (B1) is connected with the melting section (B2) end to end, the melting section (B2), the melting section (B3) and the melting section (B4) are sequentially arranged in a separated mode, a backflow groove section (D) is arranged at the position of the melting section (B1) and the melting section (B2), the rotating direction of a backflow groove (11) of the backflow groove section (D) is opposite to the rotating direction of a spiral edge, the backflow groove section (D) is divided into a backflow groove section (D1) and a backflow groove section (D2), the backflow groove section (D1) is located on the melting section (B2), the backflow groove section (D2) is located at the connection position of the melting section (B2) and the melting section (B1), the depth of the backflow groove section (D1) is kept to be the same, the axial depth of the backflow groove (D2) is gradually reduced along the rod body of the rod body (1), the ratio of the length of the first reflux tank section (D1) to the length of the second reflux tank section (D2) is 1.75: 1-2: 1.
2. The composite structure of claim 1, wherein: five reflux grooves (11) are arranged, and the five reflux grooves (11) are circumferentially distributed on the screw ridge at equal intervals.
3. The composite structure of claim 2, wherein: the radial cross section of the backflow groove (11) is an isosceles triangle, and the bottom vertex angle of the isosceles triangle is a fillet.
4. The composite structure of claim 3, wherein: the distance (H1) from the bottom of the fillet of the first section of the reflux groove (D1) to the surface of the rod body is 4mm, and the distance from the bottom of the fillet of the second section of the reflux groove (D2) to the surface of the rod body is 4-14 mm.
5. The composite structure according to any one of claims 1 to 4, wherein: the three melting sections (B3) are single spiral edges, the four melting sections (B4) are three spiral edges, the width of the spiral edge of the four melting sections (B4) is larger than that of the spiral edge of the three melting sections (B3), the width of the spiral edge of the three melting sections (B3) is the same as that of the spiral edge of the two melting sections (B2), and the pitch of the spiral edges of the four melting sections (B4) is larger than that of the spiral edge of the three melting sections (B3).
6. The composite structure according to any one of claims 1 to 4, wherein: the material discharging section (C) is a three-screw-edge structure, the material discharging section (C) comprises a material discharging section (C1), a material discharging section (C2) and a material discharging section (C3), the material discharging section (C1), the material discharging section (C2) and the material discharging section (C3) are sequentially connected end to end, and screw-edge intervals of the material discharging section (C1), the material discharging section (C2) and the material discharging section (C3) are sequentially increased.
7. The composite structure of claim 6, wherein: the screw widths of the first discharging section (C1), the second discharging section (C2) and the third discharging section (C3) are increased in sequence.
8. The composite structure according to any one of claims 1 to 4, wherein: the feeding section (A) is double-spiral-edge, the feeding section (A) comprises a feeding section (A1), a feeding section (A2), a feeding section (A3) and a feeding section (A4), the feeding section (A1), the feeding section (A2), the feeding section (A3) and the feeding section (A4) are sequentially connected end to end, and spiral-edge intervals of the feeding section (A1), the feeding section (A2), the feeding section (A3) and the feeding section (A4) are sequentially reduced.
9. The composite structure of claim 6, wherein: the widths of the spiral edges of the feeding first section (A1), the feeding second section (A2), the feeding third section (A3) and the feeding fourth section (A4) are reduced in sequence.
10. The composite structure according to any one of claims 1 to 4, wherein: the machine barrel is composed of a machine barrel section (E), a machine barrel section (F), a machine barrel section (G) and a machine barrel section (H), the diameters of the machine barrel section (E), the machine barrel section (F), the machine barrel section (G) and the machine barrel section (H) are reduced in sequence, spiral grooves (21) capable of installing temperature control pipelines are formed in the outer surface of the machine barrel section (H), alloy layers are arranged on the inner walls of conical double through holes corresponding to the machine barrel section (H) and the rear half portion of the machine barrel section (G), and the ratio of the length (L1) of the alloy layers to the total length (L2) of the machine barrel is 0.3: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182757.9U CN215151698U (en) | 2021-05-28 | 2021-05-28 | Combined structure of conical double-screw machine barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182757.9U CN215151698U (en) | 2021-05-28 | 2021-05-28 | Combined structure of conical double-screw machine barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215151698U true CN215151698U (en) | 2021-12-14 |
Family
ID=79373538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121182757.9U Expired - Fee Related CN215151698U (en) | 2021-05-28 | 2021-05-28 | Combined structure of conical double-screw machine barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215151698U (en) |
-
2021
- 2021-05-28 CN CN202121182757.9U patent/CN215151698U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211214 |