CN209007933U - A kind of multiple tube protective layer coating die - Google Patents
A kind of multiple tube protective layer coating die Download PDFInfo
- Publication number
- CN209007933U CN209007933U CN201821810023.9U CN201821810023U CN209007933U CN 209007933 U CN209007933 U CN 209007933U CN 201821810023 U CN201821810023 U CN 201821810023U CN 209007933 U CN209007933 U CN 209007933U
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- Prior art keywords
- hole
- protective layer
- layer coating
- multiple tube
- tube protective
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of multiple tube protective layer coating die; it is related to pipeline production equipment technology; including die body; the die body includes perforative through-hole; for the through-hole for passing through for metal tube, the die body side has inflow hole, and the inflow hole is mutually passed through in the through-hole side; there is annular groove, the annular groove passes through the inflow hole and mutually passes through place with the through-hole in through-hole.By the mold, firm outer plastic tube can be formed on the outside of metal tube in a manner of frivolous, uniform.
Description
Technical field
The utility model relates to pipeline production equipment technology more particularly to a kind of multiple tube protective layer coating dies.
Background technique
Multiple tube is the pipeline for having the advantages that the two simultaneously by the superposition of metal tube and plastic tube.General existing
Multiple tube production process in, mostly use splicing processes production technology, i.e., metal tube be first made, then done on molding metal tube
The plastic tube of ectonexine.Wherein, there is the plastic tube of outer layer the metal tube inside protection not wear, while be metal tube isolating oxygen
Gas prevents the effect of corrosion.The plastic tube of outer layer is because metal tube is longer and connection effect between metal and plastics is poor, by
The socket of manufactured plastic tube has the problem of being not connected firmly, and has that molding thickness is non-uniform to ask again by coating plastic layer
Topic, thus need it is a kind of can wrap up the production mould of plastic layer effectively outside metal tube realize it is uniform, firmly outer plastic tube at
Type.
Utility model content
The purpose of this utility model is to provide a kind of multiple tube protective layer coating dies can be with light by the mold
Thin, uniform mode forms firm outer plastic tube on the outside of metal tube.
To realize purpose of utility model, the utility model is adopted the technical scheme that
A kind of multiple tube protective layer coating die, including die body, the die body include perforative through-hole, and the through-hole is used for
It is passed through for metal tube, the die body side has inflow hole, and the inflow hole is mutually passed through in the through-hole side, and through-hole is interior to have ring
Slot, the annular groove pass through the inflow hole and mutually pass through place with the through-hole.
As the preferred of the utility model, the axis of the axis of the inflow hole and the through-hole is in direction die nose
Acute angle.
As the preferred of the utility model, acute angle≤45 °.
As the preferred of the utility model, the inflow hole has along the perpendicular mirror image pair where the through-bore axis
Two claimed.
As the preferred of the utility model, there are by the through-hole for opening of the through-hole through the die body front end
Wall surface is inwardly gradually small to block ridge.
It is described to block ridge and the through-hole wall joint face is arc-shaped as the preferred of the utility model.
As the preferred of the utility model, there are deflector in the annular groove, the deflector is in and the through-hole axis
Line has non-orthogonal angle.
As the preferred of the utility model, the bore edges that become a mandarin have by the outwardly extending interconnecting piece of the die body.
As the preferred of the utility model, with section in the loudspeaker expanded outwardly by the inflow hole in the interconnecting piece
The connecting hole of shape.
The utility model has the beneficial effects that:
1, the raw material flow being surrounded on around metal tube is formed under the water conservancy diversion of annular groove by the plastic raw materials of inflow hole, is matched
The forward movement for closing metal tube adheres to form outer plastic tube on metal tube, and molding mode is simple, good forming effect, circumferential
Coating is so that the thickness uniformity of outer plastic tube is good simultaneously；
2, the direction that become a mandarin of the acute angle between inflow hole and through-hole merely desires to the forward feed direction of metal tube, improves attachment effect
Fruit, while the problems such as avoid refluence backward；
3, two inflow hole symmetrical cooperation injection so that plastic raw materials formed the speed circumferentially surrounded faster, feed quantity more
Greatly, the generation for avoiding unmasked portion, improves Forming Quality and distributing homogeneity；
4, on the one hand blocking ridge can prevent extra plastic raw materials from flowing out, on the other hand can be reduced by gradually small structure
The wall thickness of outer plastic tube reduces weight, and gradually topical application pressure can be improved to improve adhesive force in small output to another further aspect；
5, the globality and structural strength of outer plastic tube can be improved to avoid the generation of weld mark by deflector.
Detailed description of the invention
Fig. 1 is the horizontal cross-section schematic diagram of the utility model；
Fig. 2 is the vertical section schematic diagram of the utility model；
The position Fig. 3 the utility model becomes a mandarin the schematic cross-section on axially bored line；
Items are respectively as follows: 1 die body in figure, 2 through-holes, 3 inflow hole, 4 annular grooves, 41 deflectors, and 5 block ridge, 6 interconnecting pieces, and 61
Connecting hole.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing:
A kind of multiple tube protective layer coating die as shown in Figure 1, 2, the steel die body 1 including cylindrical shape, die body 1
It is machined with perforative through-hole 2 with one heart, through-hole 2, which is used to pass through metal tube for metal tube, is formed in mould by external supporting element etc.
Conveying in body 1 from the front to the back, while supporting element limits metal tube to coaxial with through-hole 2.1 side of die body, which is machined with, to become a mandarin
Hole 3,3 ecto-entad of inflow hole are mutually passed through in being machined with annular groove 4 in 2 side of through-hole, through-hole 2, and annular groove 4 passes through inflow hole 3 and leads to
2 phase of hole passes through place.
In production, metal tube passes through through-hole 2 and is fed forward, while being perfused by double screw extruder into inflow hole 3
The plastic raw materials of melting, plastic raw materials flow after the entrance die body of inflow hole 3 along annular groove 4, form the packet being located at around metal tube
The feed state enclosed, the at this time advance of metal tube make its outer wall drive flowing plastic raw materials forward and to wrap therewith by rubbing action
It is rolled on the outside of metal tube and forms outer plastic tube.
In the present embodiment, the axis of inflow hole 3 and the axis of through-hole 2 are in the acute angle for being directed toward die nose.Wherein, acute angle≤
45°.Because double screw extruder has biggish extrusion pressure to plastic raw materials, pan feeding raw material is oriented to be formed by acute angle
Plastic raw materials approach axis from the front to the back forms package with the advance of complexed metal pipe, and avoids infiltration backward and cause to wrap
What is wrapped up in is uneven.
In the present embodiment, inflow hole 3 has along two of the perpendicular mirror symmetry where 2 axis of through-hole, meanwhile, it is double
Screw extruder also has symmetrical two.Bilateral injects simultaneously so that the plastic raw materials of melting only need to flow half cycle along annular groove 4
The package to metal tube is completed, coating efficiency and production efficiency are improved.
In the present embodiment, there are blocked by 2 wall surface of through-hole is inwardly gradually small for opening of the through-hole 2 through 1 front end of die body
Ridge 5.It blocks ridge 5 and 2 inner wall joint face of through-hole is arc-shaped.The setting of ridge 5 is blocked so that metal tube leaves die body in 1 front end of die body
The opening diameter that it passes through when 1 is less than the internal diameter of through-hole 2, i.e., has to the unconsolidated plastic layer of the melting of metal tube surface and scrape
Effect, which makes the outer plastic tube surface quality behind drawout part more preferable, and the thickness uniformity is more preferably.Meanwhile it is lesser
Opening is so that more plastic raw materials are put aside form biggish pressure here, to improve the attachment of plastic layer on metal tube
Power.The joint face of arc can effectively be oriented to and block plastic raw materials simultaneously, and the molten state plastic raw materials at this is prevented to be obstructed generation
The influences attachment such as turbulent flow, can also reduce and be overflowed from the plastic raw materials of the opening.
In the present embodiment, there are deflector 41 in annular groove 4, deflector 41 is in have non-orthogonal folder with 2 axis of through-hole
Angle.Under the guiding role of deflector 41, the plastic raw materials of the molten state entered in the inflow hole 3 of two sides be directed to be formed it is oblique
Cross-flow rather than the convection current of face reduce two so as to effectively reduce the size of contact surface between two strands of plastic raw materials and connect
Incomplete problem is mixed between contacting surface, and then reduces the generation of weld mark, is improved the integraty of outer plastic tube, is improved its distribution
Uniformity.
As shown in figure 3,3 edge of inflow hole has by the outwardly extending interconnecting piece 6 of die body 1 in the present embodiment.Interconnecting piece 6
It is interior to have section in the tubaeform connecting hole 61 expanded outwardly by inflow hole 3.Consequently facilitating connection double screw extruder output
The die orifice of plastic raw materials, so that guiding role of the optimization to plastic raw materials, prevents from overflowing or leak.
Above embodiments are only described preferred embodiments of the present invention, not to the structure of the utility model
Think and range is defined, without departing from the design concept of the present utility model, ordinary people in the field is practical new to this
The all variations and modifications that the technical solution of type is made each fall within the protection scope of the utility model, the utility model request
The technology contents of protection, are all described in the claims.
Claims (9)
1. a kind of multiple tube protective layer coating die, which is characterized in that including die body (1), the die body (1) includes perforative logical
Hole (2), the through-hole (2) for metal tube for passing through, and die body (1) side has inflow hole (3), the inflow hole (3)
Mutually pass through in the through-hole (2) side, there are annular groove (4) in through-hole (2), the annular groove (4) pass through the inflow hole (3) with it is described
Through-hole (2) mutually passes through place.
2. a kind of multiple tube protective layer coating die according to claim 1, which is characterized in that the inflow hole (3)
The axis of axis and the through-hole (2) is in the acute angle for being directed toward die nose.
3. a kind of multiple tube protective layer coating die according to claim 2, which is characterized in that acute angle≤45 °.
4. a kind of multiple tube protective layer coating die according to claim 1, which is characterized in that inflow hole (3) tool
There are two along the perpendicular mirror symmetry where the through-hole (2) axis.
5. a kind of multiple tube protective layer coating die according to claim 1, which is characterized in that the through-hole (2) is run through
There are block ridge (5) by the through-hole (2) wall surface is inwardly gradually small for the opening of die body (1) front end.
6. a kind of multiple tube protective layer coating die according to claim 5, which is characterized in that it is described block ridge (5) with
Through-hole (2) the inner wall joint face is arc-shaped.
7. a kind of multiple tube protective layer coating die according to claim 1, which is characterized in that annular groove (4) memory
Having deflector (41), the deflector (41) is in have non-orthogonal angle with the through-hole (2) axis.
8. a kind of multiple tube protective layer coating die according to claim 1, which is characterized in that inflow hole (3) side
Edge has by the die body (1) outwardly extending interconnecting piece (6).
9. a kind of multiple tube protective layer coating die according to claim 8, which is characterized in that in the interconnecting piece (6)
It is in the tubaeform connecting hole (61) expanded outwardly by the inflow hole (3) with section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821810023.9U CN209007933U (en) | 2018-11-05 | 2018-11-05 | A kind of multiple tube protective layer coating die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821810023.9U CN209007933U (en) | 2018-11-05 | 2018-11-05 | A kind of multiple tube protective layer coating die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209007933U true CN209007933U (en) | 2019-06-21 |
Family
ID=66841311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821810023.9U Active CN209007933U (en) | 2018-11-05 | 2018-11-05 | A kind of multiple tube protective layer coating die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209007933U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130130A (en) * | 2018-11-05 | 2019-01-04 | 福建亚通新材料科技股份有限公司 | A kind of multiple tube protective layer covers painting mold |
| CN112873791A (en) * | 2020-12-25 | 2021-06-01 | 北京光华纺织集团有限公司 | Industrial tubular fabric coating process |
-
2018
- 2018-11-05 CN CN201821810023.9U patent/CN209007933U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130130A (en) * | 2018-11-05 | 2019-01-04 | 福建亚通新材料科技股份有限公司 | A kind of multiple tube protective layer covers painting mold |
| CN109130130B (en) * | 2018-11-05 | 2023-12-15 | 福建亚通新材料科技股份有限公司 | Composite pipe protective layer coating die |
| CN112873791A (en) * | 2020-12-25 | 2021-06-01 | 北京光华纺织集团有限公司 | Industrial tubular fabric coating process |
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