CN207388267U - A kind of extrusion barrel - Google Patents
A kind of extrusion barrel Download PDFInfo
- Publication number
- CN207388267U CN207388267U CN201721344744.0U CN201721344744U CN207388267U CN 207388267 U CN207388267 U CN 207388267U CN 201721344744 U CN201721344744 U CN 201721344744U CN 207388267 U CN207388267 U CN 207388267U
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- China
- Prior art keywords
- section
- discharging
- sections
- extrusion barrel
- feed zone
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- Expired - Fee Related
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of extrusion barrel, including cylinder, the cylinder is formed by connecting by feed zone and discharging section, the feed zone on discharging section with being respectively arranged with feed inlet and discharge port, the inner cavity of feed zone is connected with the inner cavity of discharging section, the inner cavity of connection is gradually reduced from feed inlet to discharge port, it is provided with to connect the groove of fixing device on the discharging section side wall close to discharge port, injecting hole is provided on the bottom surface of the groove, the injecting hole is connected with cylinder lumen, and the sealing device for preventing that high pressure nitrogen from overflowing is provided on the injecting hole.It the advantage is that：High pressure nitrogen can be injected into cylinder lumen, is realized by high pressure nitrogen to material foaming operation, without using foaming agent, reduce the corrosion to cylinder inboard wall, extend the service life of cylinder, will not volatilize toxic gas, it is environmentally protective, it can be recycled after nitrogen pressurization, production cost is low.
Description
Technical field
The utility model is related to plastic extrusion apparatus manufacture technology field, a kind of especially extrusion barrel.
Background technology
A kind of existing Patent No. CN201510726232.X is entitled《Bore double machine barrel》Chinese invention patent disclose
A kind of cone double machine barrel, machine barrel inner cavity are for accommodating the bellmouth that two axis of twin-screw are parallel, hole wall intersects so that machine barrel
Intracavity section shape is the ellipse in accumbency formed by two intersecting circles, and the machine barrel inner cavity is from feed inlet to discharge port
Machine barrel inner cavity is gradually reduced, it is characterised in that：The machine barrel is divided into feed zone and discharging section, and respective connecting pin is set respectively
Feed zone flange and discharging section flange, are connected with therebetween, and the machine barrel inner cavity of the discharging section is set by antifriction metal (AFM)
Neck bush made of material, the nitration case that one layer of via nitride processing is provided on the surface of the neck bush and is formed.The cone is double
The advantages of machine barrel, is：With good wearability and corrosion resistance, it can ensure the quality of plastic products for a long time；Work as neck bush
After abrasion or corrosion, as long as replacing 2 neck bush, and replace conveniently；Machine barrel itself service life is long.However, the machine barrel
Foaming is needed using plastics blowing agent, and of high cost, foaming effect is also undesirable, causes yield rate low, therefore the structure of the machine barrel
It also needs to be further improved.
The content of the invention
Technical problem to be solved in the utility model be for the above-mentioned prior art present situation and provide it is a kind of without using
Foaming agent, foaming effect is good, the extrusion barrel of high yield rate.
Technical solution is used by the utility model solves above-mentioned technical problem：This extrusion barrel, it is described including cylinder
Cylinder is formed by connecting by feed zone and discharging section, and the feed zone on discharging section with being respectively arranged with feed inlet and discharge port, institute
It states the inner cavity of feed zone with the inner cavity of discharging section to be connected, the inner cavity of connection is gradually reduced from feed inlet to discharge port, feature
It is：It is provided with to connect the groove of fixing device on the discharging section side wall close to discharge port, on the bottom surface of the groove
Injecting hole is provided with, the injecting hole is connected with cylinder lumen, and being provided on the injecting hole prevents what high pressure nitrogen from overflowing
Sealing device.
As an improvement, the sealing device is the screw thread being arranged on injecting hole side wall, high pressure nitrogen pipeline tapping
The connection screw thread at place is screwed in screw thread and pipeline is made to be sealed connected together with injecting hole.
It is further improved, the bottom surface of the groove is the horizontal plane that can be adapted with fixing device, and the injecting hole is two
A, two injecting holes are spaced apart and arranged on horizontal plane.
As an improvement, the feed zone include charging one section, charging two sections with charging three sections, the feed inlet be arranged on into
On one section of material, one section of the charging, two sections of charging, the diameter of three sections of charging are sequentially reduced, the end set of three sections of the charging
There is the connecting flange being connected with discharging section.
It is further improved, the discharging section includes one section of discharging with discharging two sections, and the discharge port is arranged on two sections of discharging
On, the end set of one section of the discharging has the flange that can be connected with feed zone, and one section of the discharging discharges two sections
Diameter is sequentially reduced, and the diameter of three sections of diameter and the charging of one section of the discharging is identical.
Be further improved, connecting flange and flange pairing and joint face, the joint face are set on the side wall that is formed
On be provided with venthole, the connecting screw hole of fixed -piping is provided on the joint face around venthole.
It is further improved, the venthole is two, and two ventholes are disposed on joint face, and the one of venthole
Half is located on feed zone, and the other half of venthole is located on discharging section.
As an improvement, cylinder lumen is for accommodating the bellmouth that two axis of twin-screw are parallel, hole wall intersects, it is described
The axial cross section of bellmouth is to be made of the circle identical, that diameter is identical of two center of circle height, and two round circle center distances are small
In single circular diameter more than single radius of circle.
As an improvement, the feed inlet is arranged on the side wall of feed zone, on the feed zone side wall of feed inlet correspondence position
It is provided with coupling recess portion, the bottom surface of the coupling recess portion is plane, and consolidating for connecting pipe is provided in the plane around feed inlet
Determine screw hole
Compared with prior art, the utility model is used is provided with to connect on the discharging section side wall close to discharge port
The groove of fixing device is provided with injecting hole on the bottom surface of the groove, and the injecting hole is connected with cylinder lumen, the note
The advantages of being provided on stomata prevents the sealing device of high pressure nitrogen spilling, this structure is：It can be noted into cylinder lumen
Enter high pressure nitrogen, realized by high pressure nitrogen to material foaming operation, without using foaming agent, reduce the corruption to cylinder inboard wall
Erosion, extends the service life of cylinder, and will not volatilize toxic gas, environmentally protective, can recycle, be produced into after nitrogen pressurization
This is low；The pipeline of connection nitrogen is connected by threaded portion with injecting hole, it is ensured that nitrogen enters in machine barrel, and using effect is good, note
Gas is efficient, can quickly improve the pressure in machine barrel；Machine barrel is divided into feed zone and discharging section, stepped setting, and outer diameter gradually subtracts
It is small, it is easy to process, rapidoprint is more saved, can production cost further be reduced with section displacing.
Description of the drawings
Fig. 1 is cut away the front projection figure after top half for the utility model embodiment；
Fig. 2 is along the sectional view of line C-C in Fig. 1；
Fig. 3 is along the sectional view of line D-D in Fig. 1；
Fig. 4 is along the sectional view of E-E lines in Fig. 1；
Fig. 5 is the top view of coupling recess portion in Fig. 1；
Fig. 6 is the top view of joint face in Fig. 1.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing embodiment.
As shown in Figures 1 to 5, the extrusion barrel of the present embodiment, including cylinder 1, the cylinder 1 is by feed zone A and discharging
Section B is formed by connecting, and is respectively arranged with feed inlet 17 and discharge port on the feed zone A and discharging section B, the feed zone A's is interior
Chamber is connected with the inner cavity of discharging section B, and the inner cavity of connection is gradually reduced from feed inlet 17 to discharge port, in going out close to discharge port
It is provided with to connect the groove 11 of fixing device on material section side wall, injecting hole 12, institute is provided on the bottom surface of the groove 11
It states injecting hole 12 with cylinder lumen to be connected, the sealing device for preventing that high pressure nitrogen from overflowing is provided on the injecting hole 12.Institute
It is the screw thread being arranged on injecting hole side wall to state sealing device, and the connection screw thread at high pressure nitrogen pipeline tapping is screwed in
On tight screw thread pipeline is made to be sealed connected together with injecting hole 12.The bottom surface of the groove 11 is that can be adapted with fixing device
Horizontal plane, the injecting hole 12 be two, two injecting holes are spaced apart and arranged on horizontal plane.The feed zone includes charging
Three sections of one section of A1, two sections of A2 of charging and charging A3, the feed inlet 17 are arranged on one section of A1 of charging, one section of A1 of the charging,
Two sections of A2 of charging, the diameter of three sections of A3 of charging are sequentially reduced, and the end set of three sections of A3 of the charging has to be connected with discharging section B
Connecting flange 13.The discharging section B includes two sections of B2 of one section of B1 of discharging and discharging, and the discharge port is arranged on two sections of B2 of discharging
On, the end set of one section of B1 of the discharging has the flange 14 that can be connected with feed zone A, one section of B1 of the discharging, goes out
The diameter of two sections of B2 of material is sequentially reduced, and the diameter of one section of B1 of the discharging is identical with the diameter for feeding three sections of A3.Connection method
Orchid 13 is provided with venthole 15, ventilates with setting joint face in 14 pairing of flange and the side wall that is formed on the joint face
The connecting screw hole 16 of fixed -piping is provided on joint face around hole 15.The venthole 15 is two, two ventholes 15
It is disposed on joint face, and the half of venthole 15 is located on feed zone A, the other half of venthole 15 is located at discharging section B
On.Cylinder lumen is for accommodating the bellmouth that two axis of twin-screw are parallel, hole wall intersects, and the axial direction of the bellmouth is cut
Face is to be made of the circle identical, that diameter is identical of two center of circle height, and two round circle center distance L are less than single circular diameter R
And more than single radius of circle r.The feed inlet 17 is arranged on the side wall of feed zone A, the feed zone of 17 correspondence position of feed inlet
It is provided with coupling recess portion 18 on side wall, the bottom surface of the coupling recess portion 18 is plane, is provided in the plane around feed inlet 17
The fixing threaded hole 19 of connecting pipe.
Claims (9)
1. a kind of extrusion barrel, including cylinder (1), the cylinder (1) is formed by connecting by feed zone (A) and discharging section (B), described
Feed zone (A) on discharging section (B) with being respectively arranged with feed inlet (17) and discharge port, the inner cavity of the feed zone (A) and discharging
The inner cavity of section (B) is connected, and the inner cavity of connection is gradually reduced from feed inlet (17) to discharge port, it is characterised in that：Close to go out
It is provided with to connect the groove (11) of fixing device on the discharging section side wall of material mouth, is provided on the bottom surface of the groove (11)
Injecting hole (12), the injecting hole (12) are connected with cylinder lumen, and being provided on the injecting hole (12) prevents high pressure nitrogen
The sealing device of spilling.
2. extrusion barrel according to claim 1, it is characterised in that：The sealing device is to be arranged on injecting hole side wall
Screw thread, the connection screw thread at high pressure nitrogen pipeline tapping is screwed in screw thread and makes pipeline and injecting hole (12) close
Envelope links together.
3. extrusion barrel according to claim 2, it is characterised in that：The bottom surface of the groove (11) is energy and fixing device
The horizontal plane being adapted, the injecting hole (12) are two, and two injecting holes are spaced apart and arranged on horizontal plane.
4. according to any extrusion barrel in claims 1 to 3, it is characterised in that：The feed zone includes one section of charging
(A1), two sections (A2) and charging three sections (A3) are fed, the feed inlet (17) is arranged in one section of charging (A1), the charging one
Section (A1), charging two sections (A2), feed three sections (A3) diameter be sequentially reduced, it is described charging three sections (A3) end set have with
The connecting flange (13) that discharging section (B) is connected.
5. extrusion barrel according to claim 4, it is characterised in that：The discharging section (B) include discharging one section (B1) with
It discharges two sections (B2), the discharge port is arranged in discharging two sections (B2), and the end set of the discharging one section (B1) has can be with
The flange (14) that feed zone (A) is connected, the discharging one section (B1), the diameter of discharging two sections (B2) are sequentially reduced, institute
The diameter for stating discharging one section (B1) is identical with the diameter for feeding three sections (A3).
6. extrusion barrel according to claim 5, it is characterised in that：Connecting flange (13) and flange (14) pairing and
Joint face on the side wall of formation is set, is provided with venthole (15) on the joint face, on the joint face around venthole (15)
It is provided with the connecting screw hole (16) of fixed -piping.
7. extrusion barrel according to claim 6, it is characterised in that：The venthole (15) is two, two ventholes
(15) it is disposed on joint face, and the half of venthole (15) is located on feed zone (A), another subluxation of venthole (15)
In on discharging section (B).
8. according to any extrusion barrel in claims 1 to 3, it is characterised in that：Cylinder lumen is for accommodating double spiral shells
The bellmouth that two axis of bar are parallel, hole wall intersects, the axial cross section of the bellmouth is identical, straight by two centers of circle height
The identical circle composition of footpath size, two round circle center distances (L) are less than single circular diameter (R) and are more than single radius of circle (r).
9. according to any extrusion barrel in claims 1 to 3, it is characterised in that：The feed inlet (17) be arranged on into
On the side wall for expecting section (A), coupling recess portion (18) is provided on the feed zone side wall of feed inlet (17) correspondence position, the connection is recessed
The bottom surface in portion (18) is plane, and the fixing threaded hole (19) of connecting pipe is provided in the plane of feed inlet (17) surrounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721344744.0U CN207388267U (en) | 2017-09-28 | 2017-09-28 | A kind of extrusion barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721344744.0U CN207388267U (en) | 2017-09-28 | 2017-09-28 | A kind of extrusion barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207388267U true CN207388267U (en) | 2018-05-22 |
Family
ID=62328720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721344744.0U Expired - Fee Related CN207388267U (en) | 2017-09-28 | 2017-09-28 | A kind of extrusion barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207388267U (en) |
-
2017
- 2017-09-28 CN CN201721344744.0U patent/CN207388267U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180522 |