CN209666213U - A kind of extrusion screw rod - Google Patents
A kind of extrusion screw rod Download PDFInfo
- Publication number
- CN209666213U CN209666213U CN201920318566.7U CN201920318566U CN209666213U CN 209666213 U CN209666213 U CN 209666213U CN 201920318566 U CN201920318566 U CN 201920318566U CN 209666213 U CN209666213 U CN 209666213U
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- China
- Prior art keywords
- screw rod
- extrusion
- spiral shell
- shell rib
- plasticizing
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Abstract
A kind of extrusion screw rod is divided into four sections, respectively interconnecting piece, feeder, extruding plasticizing portion and extrusion portion from left to right；Keyway and internal thread hole are processed on the interconnecting piece to be changed by the variation of screw pitch and the front and rear angles of spiral shell rib so that feedstock is smooth, the phenomenon that feed inlet is not in returning charge for connecting line shaft, the feeder.Described to squeeze plasticizing portion by the variation of spiral shell rib width and the variation of screw rod bottom diameter so that raw material plasticizing is uniform, pressure change is gentle, and the extrusion portion makes discharging push strong by using the change width of twin-feed spiral and spiral shell rib, and discharging is uniformly.It is modified by structure to screw rod and parameter, so that pelletizer efficiency when being granulated improves, the particularly suitable raw material of the screw rod is the recycled plastic with moisture.
Description
Technical field
The present invention relates to screw extrusion apparatus, and in particular to a kind of extrusion screw rod.
Background technique
Waste plastic product, film be not degradable, pollutes environment, is generally recycled and regenerated by screw extrusion apparatus
It is granulated, there are a certain amount of moisture and rubbish when being granulated for the waste plastic product of existing recycling, utilize common extrusion device
There may be high-moisture problems, so that having tiny bubble in regenerated particle, when the production that particle is produced by injection molding machine
Product can be scrapped, and the product quality of enterprise is caused to glide.
Summary of the invention
Aiming at the shortcomings existing in the above problems, the present invention provides a kind of extrusion screw rod for Squeezinggranulator.
To achieve the above object, the present invention provides a kind of extrusion screw rod, is divided into four sections from left to right, respectively interconnecting piece,
Feeder squeezes plasticizing portion and extrusion portion, and keyway and internal thread hole are processed on interconnecting piece, and the screw pitch of feeder is 200mm, squeezes
The extruding plasticizing spiral shell rib width in plasticizing portion is incremented by from left to right, and the bottom diameter of screw rod is incremented by from left to right at squeezed plasticizing portion, squeezes
The extrusion spiral shell rib at portion uses twin-feed spiral out, and the width for squeezing out spiral shell rib is incremented by from left to right.
As a further improvement of the present invention, keyway is 2 axially symmetric distributions.
As a further improvement of the present invention, the cross sectional shape of feeder upper feeding spiral shell rib is trapezoidal, the charging spiral shell rib
Left side side be the back side, the other side is stress surface.
As a further improvement of the present invention, the angle of the back side and the screw stem is 72 °, the stress surface and institute
The angle for stating screw stem is 94 °.
As a further improvement of the present invention, the taper for squeezing the bottom diameter of screw rod at plasticizing portion is 1:12.
As a further improvement of the present invention, the right end face of screw rod processes heavy shoulder.
The invention has the benefit that
1, the spiral shell rib at plasticizing is squeezed by changing the width of spiral groove depth and spiral shell rib, while squeezing screw rod at plasticizing portion
Bottom diameter is incremented by from left to right, by the variation of these structures and parameter, so that raw material pressure change when squeezing plasticizing is gentle, dress
Operation is set to stablize.
2, the extrusion spiral shell rib at extrusion portion uses twin-feed spiral, and the width of charging spiral shell rib is incremented by from left to right, so that squeezing out
Raw material push is strong, and discharging is uniform.
Detailed description of the invention
Fig. 1 is a kind of main view of extrusion screw rod of the present invention；
Fig. 2 is A direction view in Fig. 1；
Fig. 3 is B direction view in Fig. 1；
Fig. 4 is C direction view in Fig. 1.
In figure: 1, interconnecting piece；11, keyway；12, internal thread hole；2, feeder；21, spiral shell rib is fed；211, the back side；212,
Stress surface；3, plasticizing portion is squeezed；31, plasticizing spiral shell rib is squeezed；32, plasticizing axis is squeezed；4, extrusion portion；41, spiral shell rib is squeezed out；42, it sinks
Shoulder.
Specific embodiment
As shown in Figure 1, a kind of extrusion screw rod of the embodiment of the present invention, be divided into four sections from left to right, respectively interconnecting piece 1,
Feeder 2 squeezes plasticizing portion 3 and extrusion portion 4, and keyway 11 and internal thread hole 12 are processed on interconnecting piece 1 for connecting blank disk, key
Slot is the operation is stable that 2 axially symmetric distributions guarantee blank disk, and the screw pitch of feeder is 200mm, squeezes squeezing for plasticizing portion 3
31 width of compression moulding spiral shell rib is incremented by from left to right, and the bottom diameter for squeezing screw rod at plasticizing portion is incremented by from left to right, squeezes at plasticizing portion
The taper of the bottom diameter of screw rod is 1:12, so that the pressure squeezed becomes larger, raw material steadily enters extrusion portion, at extrusion portion 4
Extrusion spiral shell rib 41 use twin-feed spiral, squeeze out spiral shell rib width be incremented by from left to right, guarantee extrusion pressure increase when screw rod turn
Dynamic stability, and it is uniform to discharge.The cross sectional shape of 2 upper feeding spiral shell rib 21 of feeder is trapezoidal, the left side of the charging spiral shell rib
Side is back 211, and the other side is stress surface 212.The angle of the back side and the screw stem is 72 °, squeezes out face and the spiral shell
The angle of bar central axis is 94 °.The right end face of screw rod processes heavy shoulder.
The spiral shell rib at plasticizing is squeezed by changing the width of spiral groove depth and spiral shell rib, while squeezing the bottom of screw rod at plasticizing portion
Diameter is incremented by from left to right, by these structure, that is, parameter variations, so that raw material pressure change when squeezing plasticizing is gentle, device
Operation is stablized.Extrusion spiral shell rib at extrusion portion uses twin-feed spiral, and the width for squeezing out spiral shell rib is incremented by from left to right, so that squeezing out former
Material push is strong, and discharging is uniform.
When specifically used, for convenience of the present invention is understood, it is described in conjunction with attached drawing；
By waste and old plastics or film cleaning it is clean after feed opening be added, the feeder of screw rod, which turns right raw material, to be pushed away,
It enters raw material with certain pressure and squeezes plasticizing portion, under extraneous heating state raw material is plasticized, the original after plasticizing
Pressure is uniform when material enters extrusion portion, and motion stabilization state bottom discharge, realizes the function being granulated by subsequent blank disk.
For those skilled in the art, the invention may be variously modified and varied.It is all in spirit of the invention
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of extrusion screw rod, be divided into four sections from left to right, respectively interconnecting piece (1), feeder (2), squeeze plasticizing portion (3) and
Extrusion portion (4), it is characterised in that: keyway (11) and internal thread hole (12), the feeder (2) are processed on the interconnecting piece (1)
Screw pitch be 200mm, described extruding plasticizing spiral shell rib (31) width for squeezing plasticizing portion (3) is incremented by from left to right, and extrudings is moulded
The bottom diameter of screw rod is incremented by from left to right at change portion (3), and the extrusion spiral shell rib (41) at the extrusion portion (4) uses twin-feed spiral, institute
The width for stating extrusion spiral shell rib (41) is incremented by from left to right.
2. a kind of extrusion screw rod according to claim 1, it is characterised in that: the keyway (11) is 2 axially symmetric
Distribution.
3. a kind of extrusion screw rod according to claim 1, it is characterised in that: feeder (2) the upper feeding spiral shell rib (21)
Cross sectional shape be it is trapezoidal, it is described charging spiral shell rib (21) left side side be the back side (211), the other side be stress surface (212).
4. a kind of extrusion screw rod according to claim 3, it is characterised in that: the back side (211) and the pitch
The angle of axis is 72 °, and the angle of the stress surface (212) and the screw stem is 94 °.
5. a kind of extrusion screw rod according to claim 1, it is characterised in that: the bottom for squeezing screw rod at plasticizing portion (3)
The taper of diameter is 1:12.
6. a kind of extrusion screw rod according to claim 1, it is characterised in that: the right end face of the screw rod processes heavy shoulder
(42)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920318566.7U CN209666213U (en) | 2019-03-13 | 2019-03-13 | A kind of extrusion screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920318566.7U CN209666213U (en) | 2019-03-13 | 2019-03-13 | A kind of extrusion screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209666213U true CN209666213U (en) | 2019-11-22 |
Family
ID=68571407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920318566.7U Active CN209666213U (en) | 2019-03-13 | 2019-03-13 | A kind of extrusion screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209666213U (en) |
-
2019
- 2019-03-13 CN CN201920318566.7U patent/CN209666213U/en active Active
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