CN208375955U - A kind of outer protection tube extrusion die for insulating tube One-step production - Google Patents
A kind of outer protection tube extrusion die for insulating tube One-step production Download PDFInfo
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- CN208375955U CN208375955U CN201820814765.2U CN201820814765U CN208375955U CN 208375955 U CN208375955 U CN 208375955U CN 201820814765 U CN201820814765 U CN 201820814765U CN 208375955 U CN208375955 U CN 208375955U
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- mold core
- die body
- outer protection
- protection tube
- mold
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- 238000001125 extrusion Methods 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 239000004033 plastic Substances 0.000 claims abstract description 52
- 229920003023 plastic Polymers 0.000 claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 125000004122 cyclic group Chemical group 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005187 foaming Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of outer protection tube extrusion die for insulating tube One-step production, including mold core, die body, terminal pad, mouth mold and mold core platen；The mold core is sleeved in die body inner cavity, is formed ring-shaped plastics between mold core and die body and is squeezed out die cavity；The terminal pad is docked with the feed inlet of plastic extrusion die cavity；The mouth mold is fixed on die body rear end, is sleeved on outside mold core with gap fiting mode, and the outer protection tube extrusion channel for being connected to plastic extrusion die cavity is formed between mouth mold and mold core；The mold core platen is assemblied in the front end of die body using fastening screw, and the axially position of mold core is realized by mold core platen；One group of radial direction top thread is arranged along outer wall circumferencial direction in the die body front end, the radial positioning of mold core is realized by the radial direction top thread, and the relative position of mold core and die body can be adjusted by radial direction top thread.The utility model solves the problems, such as that extrusion outer protection tube evenness of wall thickness is poor, has achieved the purpose that improve insulating tube product quality, has guaranteed that insulating tube one step processing production line operates normally.
Description
Technical field
The utility model relates to a kind of plastics extrusion die heads, especially a kind of to be suitable for insulating tube one-step method production process
Outer protection tube extrusion die, belong to plastic extruding forming technical field of mold.
Background technique
One step completed production that insulating tube one step processing technique, i.e. plastics outer protection tube squeeze out and polyurethane insulation coating foams
Mode has many advantages, such as that processing step is simple, work efficiency is high, production cost is low, product thermal-insulation anticorrosion performance is good, is applicable in pipe
Diameter range reaches φ 48mm~φ 1000mm, has broad application prospects.The process flow of insulating tube one step processing are as follows: first
Heating in medium frequency processing first is carried out to the outer surface of steel pipe after derusting；Subsequent steel pipe enters plastic extrusion under the promotion of conveying device
Centre bore at machine head, after steel pipe reaches setting length from the other side outreach of centre bore, plastic extruder is squeezed out
Outer protection tube, outer protection tube coaxial surrounding steel pipe simultaneously travel forward with steel pipe synchronous uniform velocity, while carrying out electricity to the inner surface of outer protection tube
Dizzy processing；During outer protection tube after sided corona treatment and steel pipe synchronous marching, the gun barrel of high pressure foaming machine is to outer protection tube and steel pipe
Between cavity inject foaming stock solution, foaming stock solution foams form insulating layer immediately.
In the job step of above-mentioned insulating tube one step processing, the extrusion of plastics outer protection tube is to pass through plastic extrusion machine head
What upper equipped mold was realized.As shown in attached drawing 1, Fig. 2, traditional plastics extrusion die includes mold core 1, die body 2, terminal pad 3, mouth
Mould 5, mouth mold seat 4 and mouth mold pressure ring 7；Wherein mold core 1 is equipped with the centre bore passed through for steel pipe, and mold core 1 is sleeved in die body 2,
Front end and 2 fixing assembling of die body form ring-shaped plastics between mold core 1 and die body 2 and squeeze out die cavity M；3 outlet end of terminal pad and modeling
Material squeezes out the feed inlet docking of die cavity M；The mouth mold 5 is sleeved on 1 rear end of mold core, passes through the cooperation of mouth mold seat 4 and mouth mold pressure ring 7
It is fixedly clamped, forms the outer protection tube extrusion channel T for being connected to plastic extrusion die cavity M between mouth mold 5 and mold core 1；In 2 rear end of die body
It is also provided with radial direction top thread 6, the purpose is to adjust to squeeze out channel T shape by radial direction top thread 6, to guarantee to squeeze out casing wall thickness
Uniformity.But since the plastics of molten condition are after in the entrance of terminal pad 3 die cavity M, the type of flow is along axial direction and ring
It around the resultant motion of mold core circumferential direction, is influenced by plastic molten melt temperature and extrusion pressure, the plastics at different location in die cavity M
The packed density of molten mass is difficult to keep unanimously, is caused extrusion outer protection tube evenness of wall thickness poor, in this case, is only passed through tune
Section squeezes out channel T shape, not only can generate internal stress because the outer protection tube pressure of extrusion is unbalanced, can also destroy plastic molten mass
The smoothness of flowing causes plastics outer protection tube extruded velocity and steel pipe feed speed uncoordinated, to influence insulating tube one-step method
The normal operation of forming production line.
Utility model content
The utility model provides a kind of outer protection tube extrusion die for insulating tube One-step production, it is intended to solve to squeeze out outer
The problem of pillar evenness of wall thickness difference reaches and improves insulating tube product quality, guarantees that insulating tube one step processing production line is normal
The purpose of operation.
To achieve the above objectives, the present invention adopts the following technical solutions:
A kind of outer protection tube extrusion die for insulating tube One-step production, including mold core, die body, terminal pad, mouth mold and
Mold core platen；The mold core is equipped with the centre bore passed through for steel pipe, is sleeved in die body inner cavity, the shape between mold core and die body
Circlewise plastic extrusion die cavity；Described terminal pad one end and the outlet end of plastic extruder connect, the other end and plastic extrusion die
The feed inlet of chamber docks；The mouth mold is fixed on die body rear end, is sleeved on outside mold core with gap fiting mode, mouth mold and mold core
Between formed connection plastic extrusion die cavity outer protection tube squeeze out channel；The mold core platen is assemblied in die body using fastening screw
Front end realizes the axially position of mold core by mold core platen；One group of radial top is arranged along outer wall circumferencial direction in the die body front end
Silk is realized the radial positioning of mold core by the radial direction top thread, and can adjust the relative position of mold core and die body by radial direction top thread.
The above-mentioned outer protection tube extrusion die for insulating tube One-step production is arranged in the plastic extrusion die cavity and shunts
Block, the branching block are semicircle ring structure, are fixedly mounted on the bottom of plastic extrusion die cavity front end.
Cyclic annular backgauge is arranged in the above-mentioned outer protection tube extrusion die for insulating tube One-step production on the mold core outer wall
Boss, the ring-type backgauge boss is located in the middle part of mold core, on rear side of plastic extrusion die cavity feed inlet.
The above-mentioned outer protection tube extrusion die for insulating tube One-step production, the radial direction top thread quantity is six, along mould
Body front end is evenly arranged along outer wall circumferencial direction.
The above-mentioned outer protection tube extrusion die for insulating tube One-step production, the fastening screw quantity is eight, along mould
Core platen circumferencial direction is evenly arranged.
The utility model is a kind of outer protection tube extrusion die for insulating tube One-step production, it will using fastening screw
Mold core platen is assemblied in the front end of die body, the axially position of mold core is realized by mold core platen, also by being arranged in die body front end
One group of radial direction top thread realize mold core radial positioning can unclamp mold core when the outer protection tube wall unevenness for detecting extrusion is even
The fastening screw of platen adjusts the relative position of mold core and die body by radial direction top thread, thus realize to plastic extrusion die cavity and
Outer protection tube adjusts while squeezing out channel, thus avoids outer protection tube caused by only relying on adjusting extrusion channel shape mode and squeezes out
The unbalanced problem of pressure；Also branching block is arranged in plastic extrusion die cavity in the utility model, enters plastics by branching block increase
The flow and pressure for squeezing out mold cavity bottoms plastic molten mass ensure that the consistency for squeezing out outer protection tube wall thickness；The utility model is also
Cyclic annular backgauge boss is set on mold core outer wall, the plastic molten melt that outer protection tube squeezes out channel is lifted by cyclic annular backgauge boss
The pressure of body improves the smoothness that plastic molten mass squeezes out.In conclusion the utility model solve squeeze out outer protection tube wall thickness it is equal
The problem of even property difference has reached and has improved insulating tube product quality, guarantees the mesh that insulating tube one step processing production line operates normally
's.
Detailed description of the invention
Fig. 1 is traditional plastics extrusion die structural schematic diagram；
Fig. 2 is A-A the schematic diagram of the section structure in Fig. 1；
Fig. 3 is the utility model structure diagram；
Fig. 4 is B-B the schematic diagram of the section structure in Fig. 3；
Fig. 5 is C-C the schematic diagram of the section structure in Fig. 3；
Fig. 6 is D-D the schematic diagram of the section structure in Fig. 3；
Fig. 7 is the schematic diagram of the section structure of mold core.
Each list of reference numerals in figure are as follows:
1, mold core, 1-1, cyclic annular backgauge boss, 2, die body, 3, terminal pad, 4, mouth mold seat, 5, mouth mold, 6, radial direction top thread, 7,
Mouth mold pressure ring, 8, mold core platen, 9, branching block, 10, fastening screw；
M, plastic extrusion die cavity, T, outer protection tube squeeze out channel.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the utility model is described in further detail.
Referring to Fig. 3, Fig. 4, the utility model are a kind of outer protection tube extrusion die for insulating tube One-step production, it is wrapped
Include mold core 1, die body 2, terminal pad 3, mouth mold 5 and mold core platen 8；The mold core 1 is equipped with the centre bore passed through for steel pipe, suit
In 2 inner cavity of die body, ring-shaped plastics are formed between mold core 1 and die body 2 and squeeze out die cavity M；Described 3 one end of terminal pad and plastics squeeze
The outlet end connection of machine, the other end are docked with the feed inlet of plastic extrusion die cavity M out；The mouth mold 5 is fixed on 2 rear end of die body,
It is sleeved on 1 outside of mold core with gap fiting mode, the outer protection tube that formation is connected to plastic extrusion die cavity M between mouth mold 5 and mold core 1 is squeezed
Channel T out；The mold core platen 8 is assemblied in the front end of die body 2 using the fastening screw 10 that eight its circumferencial directions are evenly arranged,
The axially position of mold core 1 is realized by mold core platen 8；2 front end of die body is uniformly arranged six radial directions along outer wall circumferencial direction
Jackscrew 6 is realized the radial positioning of mold core 1 by the radial direction top thread 6, and can adjust mold core 1 and die body 2 by radial direction top thread 6
Relative position.
Referring to Fig. 3, Fig. 5, the outer protection tube extrusion die described in the utility model for insulating tube One-step production, in its modeling
Material, which squeezes out, is arranged branching block 9 in die cavity M, the branching block 9 is semicircle ring structure, is fixedly mounted on the front end plastic extrusion die cavity M
Bottom.
Referring to Fig. 3, Fig. 7, the outer protection tube extrusion die described in the utility model for insulating tube One-step production, described
Cyclic annular backgauge boss 1-1 is set on 1 outer wall of mold core, and the ring-type backgauge boss 1-1 is located at 1 middle part of mold core, plastic extrusion die cavity M
The rear side of feed inlet.
Referring to Fig. 1 to Fig. 7, the utility model is assembled mold core platen 8 in the front end of die body 2 using fastening screw 10, is led to
The axially position that mold core platen 8 realizes mold core 1 is crossed, also realizes mold core 1 by the way that one group of radial direction top thread 6 of 2 front end of die body is arranged in
Radial positioning, when the outer protection tube wall unevenness for detecting extrusion is even, mould can be unclamped during insulating tube One-step production
Fastening screw 10 on core platen 8 adjusts the relative position of mold core 1 and die body 2 by radial direction top thread 6, squeezes to realize to plastics
It is adjusted while die cavity M and outer protection tube squeeze out channel T out, thus avoids only relying on adjusting and squeeze out channel T shape mode and cause
The unbalanced problem of outer protection tube extrusion pressure；Branching block 9, plastic molten melt is arranged in the utility model also in plastic extrusion die cavity M
In body flow process, the flow and pressure of plastic extrusion die cavity M bottom plastic molten mass can be entered by the increase of branching block 9, is protected
The consistency for squeezing out outer protection tube wall thickness is demonstrate,proved；Cyclic annular backgauge boss 1-1 is arranged in the utility model also on 1 outer wall of mold core, passes through
The barrier effect of cyclic annular backgauge boss 1-1 is lifted into the pressure that outer protection tube squeezes out the plastic molten mass of channel T, has reached and mentioned
High plastic molten mass squeezes out the purpose of smoothness.
Claims (5)
1. a kind of outer protection tube extrusion die for insulating tube One-step production, characterized in that it includes mold core (1), die body
(2), terminal pad (3), mouth mold (5) and mold core platen (8)；The mold core (1) is equipped with the centre bore passed through for steel pipe, is sleeved on
In die body (2) inner cavity, ring-shaped plastics are formed between mold core (1) and die body (2) and squeeze out die cavity (M)；Described terminal pad (3) one end
It is connect with the outlet end of plastic extruder, the other end is docked with the feed inlet of plastic extrusion die cavity (M)；The mouth mold (5) is fixed
It in die body (2) rear end, is sleeved on outside mold core (1) with gap fiting mode, is formed between mouth mold (5) and mold core (1) and be connected to modeling
The outer protection tube that material squeezes out die cavity (M) squeezes out channel (T)；The mold core platen (8) is assemblied in die body (2) using fastening screw (10)
Front end, pass through mold core platen (8) realize mold core (1) axially position；Die body (2) front end is arranged along outer wall circumferencial direction
One group of radial direction top thread (6) is realized the radial positioning of mold core (1) by the radial direction top thread, and can adjust mould by radial direction top thread (6)
The relative position of core (1) and die body (2).
2. the outer protection tube extrusion die according to claim 1 for insulating tube One-step production, characterized in that described
Branching block (9) are set in plastic extrusion die cavity (M), the branching block (9) is semicircle ring structure, is fixedly mounted on plastic extrusion die
The bottom of the front end chamber (M).
3. the outer protection tube extrusion die according to claim 2 for insulating tube One-step production, characterized in that described
Cyclic annular backgauge boss (1-1) is set on mold core (1) outer wall, and the ring-type backgauge boss (1-1) is located in the middle part of mold core (1), plastics
Squeeze out the rear side of die cavity (M) feed inlet.
4. the outer protection tube extrusion die according to claim 3 for insulating tube One-step production, characterized in that the diameter
It is six to jackscrew (6) quantity, is evenly arranged along die body (2) front end along outer wall circumferencial direction.
5. the outer protection tube extrusion die according to claim 3 or 4 for insulating tube One-step production, characterized in that institute
Stating fastening screw (10) quantity is eight, and along mold core platen (8), circumferencial direction is evenly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820814765.2U CN208375955U (en) | 2018-05-29 | 2018-05-29 | A kind of outer protection tube extrusion die for insulating tube One-step production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820814765.2U CN208375955U (en) | 2018-05-29 | 2018-05-29 | A kind of outer protection tube extrusion die for insulating tube One-step production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208375955U true CN208375955U (en) | 2019-01-15 |
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ID=64968312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820814765.2U Active CN208375955U (en) | 2018-05-29 | 2018-05-29 | A kind of outer protection tube extrusion die for insulating tube One-step production |
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| Country | Link |
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| CN (1) | CN208375955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848237A (en) * | 2019-03-07 | 2019-06-07 | 福建工程学院 | A kind of hollow aluminum section extrusion die upper mold |
| CN117227132A (en) * | 2023-11-16 | 2023-12-15 | 济南万通铸造装备工程有限公司 | Production equipment and production method for coating polyethylene sheath on polyurethane heat-insulating pipe |
-
2018
- 2018-05-29 CN CN201820814765.2U patent/CN208375955U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848237A (en) * | 2019-03-07 | 2019-06-07 | 福建工程学院 | A kind of hollow aluminum section extrusion die upper mold |
| CN109848237B (en) * | 2019-03-07 | 2024-07-05 | 福建工程学院 | Upper die of hollow aluminum profile extrusion die |
| CN117227132A (en) * | 2023-11-16 | 2023-12-15 | 济南万通铸造装备工程有限公司 | Production equipment and production method for coating polyethylene sheath on polyurethane heat-insulating pipe |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240902 Address after: 064106 Houhu industrial cluster, Yutian County, Tangshan City, Hebei Province Patentee after: Hebei Yirui Testing Technology Co.,Ltd. Country or region after: China Address before: 064106 Houhu industrial cluster, Yutian County, Tangshan City, Hebei Province Patentee before: TANGSHAN XINGBANG PIPE CONSTRUCTION EQUIPMENT Co.,Ltd. Country or region before: China |