CN201264355Y - Parallel double screw rods for low foaming plate apparatus - Google Patents
Parallel double screw rods for low foaming plate apparatus Download PDFInfo
- Publication number
- CN201264355Y CN201264355Y CNU2008201601782U CN200820160178U CN201264355Y CN 201264355 Y CN201264355 Y CN 201264355Y CN U2008201601782 U CNU2008201601782 U CN U2008201601782U CN 200820160178 U CN200820160178 U CN 200820160178U CN 201264355 Y CN201264355 Y CN 201264355Y
- Authority
- CN
- China
- Prior art keywords
- section
- screw rod
- cooling hole
- screw
- installation portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/565—Screws having projections other than the thread, e.g. pins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/41—Intermeshing counter-rotating screws
Abstract
The utility model relates to a parallel double screw rod for a low-foaming plate device; a first screw rod is arranged to be paralleled with a second screw rod; the first screw rod comprises a first feeding section, a first plasticizing section, a first compression section, a first exhausting section, a first measuring section, a first balance section and a first mixed-refining section from right to left, and the flight pitch of the first compression section is smaller than that of the first plasticizing section, and a first exhausting groove is arranged on the thread of the first exhausting section, and the thread of the first mixed-refining section presents in a diffusion shape; the second screw rod comprises a second feeding section, a second plasticizing section, a second compression section, a second exhausting section, a second measuring section, a second balance section and a second mixed-refining section from right to left, wherein, the flight pitch of the second compression section is smaller than that of the second plasticizing section, and a second exhausting groove is arranged on the thread of the second exhausting section, and the thread of the second mixed-refining section presents in a diffusion shape. The parallel double screw rod has the advantages of high extruding rate, large yield, good plasticizing effect, and the like.
Description
Technical field
The utility model relates to a kind of low-foamed sheet equipment parallel double-screw.
Background technology
Screw rod is existing use conical double-screw one head big one little, cone shape, draw ratio is limited, the major part screw channel is dark, microcephaly's screw channel is shallow, the spiral shell mound is narrow, causes shearing the burnt easily material of excessive friction aggravation, melt mixed is even inadequately.Output does not reach requirement.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of extrusion efficiency height, output big, help preventing material stagnate decompositions, the not burnt material that works long hours, to the shearing of material is soft evenly, plasticizing effect is good, melt temperature control accurately easily, is seldom had the low-foamed sheet equipment parallel double-screw that frictional heat produces, melt mixed is even, extrusion performance is insensitive to the die orifice cross-sectional sizes and the head melt pressure is little.
The technical scheme that provides according to the utility model, described low-foamed sheet equipment parallel double-screw, comprise intermeshing first screw rod of thread surface and second screw rod, the right part of first screw rod is first installation portion, the right part of second screw rod is second installation portion, first screw rod and second screw rod be arranged in parallel, and the first screw rod right-to-left is respectively the first separate feeding section, first fluxing zone, first compression section, first exhaust section, first measuring section, first balancing segment and first mixing section, and the first compression section flight pitch is less than the flight pitch of first fluxing zone, on the screw thread of first exhaust section, offer first air discharge duct, be discrete shape setting at the screw thread of first mixing section;
The second screw rod right-to-left is respectively the separate second feeding section, second fluxing zone, second compression section, second exhaust section, second measuring section, second balancing segment and second mixing section, and the second compression section flight pitch is less than the flight pitch of second fluxing zone, on the screw thread of second exhaust section, offer second air discharge duct, be discrete shape setting at the screw thread of second mixing section.
In first screw rod, offer the first main cooling hole of extending left by the right side of first installation portion, and the first cooling Kong Weiyi blind hole, on first installation portion, offer first the cooling hole that is communicated with the first cooling hole;
In second screw rod, offer the second main cooling hole of extending left by the right side of second installation portion, and the second cooling Kong Weiyi blind hole, on second installation portion, offer second the cooling hole that is communicated with the second cooling hole.
The utility model extrusion efficiency height, output is big, help preventing material stagnation decomposition, the not burnt material that works long hours, soft evenly to the shearing of material, plasticizing effect is good, to melt temperature control accurately easily, seldom have frictional heat to produce, melt mixed is even, the low-foamed sheet equipment parallel double-screw that extrusion performance is insensitive to the die orifice cross-sectional sizes and the head melt pressure is little.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure: it comprises intermeshing first screw rod 1 of thread surface and second screw rod 2, the right part of first screw rod 1 is the first installation portion 1a, the right part of second screw rod 2 is the second installation portion 2a, first screw rod 1 and second screw rod 2 be arranged in parallel, and first screw rod, 1 right-to-left is respectively the first separate feeding section 1b, the first fluxing zone 1c, the first compression section 1d, the first exhaust section 1e, the first measuring section 1f, the first balancing segment 1g and the first mixing section 1h, and the first compression section 1d flight pitch is less than the flight pitch of the first fluxing zone 1c, on the screw thread of the first exhaust section 1e, offer the first air discharge duct 1i, be discrete shape setting at the screw thread of the first mixing section 1h;
Second screw rod, 2 right-to-lefts are respectively the separate second feeding section 2b, the second fluxing zone 2c, the second compression section 2d, the second exhaust section 2e, the second measuring section 2f, the second balancing segment 2g and the second mixing section 2h, and the second compression section 2d flight pitch is less than the flight pitch of the second fluxing zone 2c, on the screw thread of the second exhaust section 2e, offer the second air discharge duct 2i, be discrete shape setting at the screw thread of the second mixing section 2h.
In first screw rod 1, offer the first main cooling hole 1j that extends by the right side of the first installation portion 1a left, and the first cooling hole 1j is a blind hole, on the first installation portion 1a, offers first of being communicated with and cool off hole 1k with the first cooling hole 1j;
In second screw rod 2, offer the second main cooling hole 2j that extends by the right side of the second installation portion 2a left, and the second cooling hole 2j is a blind hole, on the second installation portion 2a, offers second of being communicated with and cool off hole 2k with the second cooling hole 2j.
The first feeding section 1b and the second feeding section 2b are used to accept the material that hopper is supplied with, and flow to fluxing zone then; The first fluxing zone 1c and the second fluxing zone 2c are used to accept the material that the feeding section is brought, in this section compacting fusion gradually; The first compression section 1d and the second compression section 2d are used to accept the material that fluxing zone is brought, in this further compacting of section, and fusion half plasticizing; The first exhaust section 1e and the second exhaust section 2e are used to accept the material that the compression section is brought, and material reduces in this compression, and the gas in the material is discharged; The first measuring section 1f and the second measuring section 2f are used to accept the material that exhaust section is brought, and brute force transfers out the amount of head; The first balancing segment 1g and the second balancing segment 2g are used to accept the material that measuring section is brought, the fluctuation of balance and stability material; The first mixing section 1h and the second mixing section 2h are used to increase the batch mixing uniformity of melt; When first air discharge duct 1i that offers on the first exhaust section 1e and the second exhaust section 2e, the second air discharge duct 2i work gas in the material is discharged; The first cooling hole 1j is used for constant temperature first screw rod 1, strengthens the intensity of first screw rod 1, and the second cooling hole 2j is used for constant temperature second screw rod 2, strengthens the intensity of second screw rod 2.
Parallel double-screw of the present utility model is applicable to extruding of big-and-middle-sized PVC low-foamed sheet production line.Can make the material foaming little, the even structure refinement is difficult for producing advantages such as goods internal flaw.
Claims (2)
1, a kind of low-foamed sheet equipment parallel double-screw, comprise intermeshing first screw rod of thread surface (1) and second screw rod (2), the right part of first screw rod (1) is first installation portion (1a), the right part of second screw rod (2) is second installation portion (2a), it is characterized in that: first screw rod (1) be arranged in parallel with second screw rod (2), and first screw rod (1) right-to-left is respectively the first separate feeding section (1b), first fluxing zone (1c), first compression section (1d), first exhaust section (1e), first measuring section (1f), first balancing segment (1g) and first mixing section (1h), and first compression section (1d) flight pitch is less than the flight pitch of first fluxing zone (1c), on the screw thread of first exhaust section (1e), offer first air discharge duct (1i), be discrete shape setting at the screw thread of first mixing section (1h);
Second screw rod (2) right-to-left is respectively the separate second feeding section (2b), second fluxing zone (2c), second compression section (2d), second exhaust section (2e), second measuring section (2f), second balancing segment (2g) and second mixing section (2h), and second compression section (2d) flight pitch is less than the flight pitch of second fluxing zone (2c), on the screw thread of second exhaust section (2e), offer second air discharge duct (2i), be discrete shape setting at the screw thread of second mixing section (2h).
2, low-foamed sheet equipment parallel double-screw as claimed in claim 1, it is characterized in that: in first screw rod (1), offer the first main cooling hole (1j) of extending left by the right side of first installation portion (1a), and the first cooling hole (1j) is a blind hole, offers first the cooling hole (1k) that is communicated with the first cooling hole (1j) on first installation portion (1a); In second screw rod (2), offer the second main cooling hole (2j) of extending left by the right side of second installation portion (2a), and the second cooling hole (2j) is a blind hole, offers second the cooling hole (2k) that is communicated with the second cooling hole (2j) on second installation portion (2a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201601782U CN201264355Y (en) | 2008-09-28 | 2008-09-28 | Parallel double screw rods for low foaming plate apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201601782U CN201264355Y (en) | 2008-09-28 | 2008-09-28 | Parallel double screw rods for low foaming plate apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201264355Y true CN201264355Y (en) | 2009-07-01 |
Family
ID=40830709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201601782U Expired - Lifetime CN201264355Y (en) | 2008-09-28 | 2008-09-28 | Parallel double screw rods for low foaming plate apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201264355Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034241A (en) * | 2015-07-23 | 2015-11-11 | 浙江嘉丞机械有限公司 | Injection micro-foaming device |
-
2008
- 2008-09-28 CN CNU2008201601782U patent/CN201264355Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034241A (en) * | 2015-07-23 | 2015-11-11 | 浙江嘉丞机械有限公司 | Injection micro-foaming device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090701 |
|
| CX01 | Expiry of patent term |