CN109291357A - A kind of linear low density polyethylene fire retardant pipe and preparation method thereof - Google Patents
A kind of linear low density polyethylene fire retardant pipe and preparation method thereof Download PDFInfo
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- CN109291357A CN109291357A CN201811060261.7A CN201811060261A CN109291357A CN 109291357 A CN109291357 A CN 109291357A CN 201811060261 A CN201811060261 A CN 201811060261A CN 109291357 A CN109291357 A CN 109291357A
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- tubing
- low density
- density polyethylene
- fire retardant
- linear low
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C2045/0096—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor drying the moulding material before injection, e.g. by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a kind of linear low density polyethylene fire retardant pipes and preparation method thereof, including sorting, it is dry, plasticizing, injection molding, it is cooling, sizing, detection and recycling, it is packed and stored, structure of the invention is scientific and reasonable, it is safe and convenient to use, it carries out cooling to linear low density polyethylene fire retardant pipe by calibration sleeve and linear low density polyethylene fire retardant pipe is cooled down by vacuum setting machine, ripple is generated when can effectively reduce preparation, situations such as spot, reduce linear low density polyethylene fire retardant control for when generate appearance flaw, dehumidification is carried out to mixed raw material is matched by drying box, when can effectively guarantee the production of low density polyethylene fire retardant tubing, guarantee the quality of low density polyethylene fire retardant tubing, pass through Telescopic positioning lever and fastening spring, first seal and second seal can be pressed respectively against in annular fixing groove, It, can be to carrying out installation fixation between tubing by fastening screw to be sealed to supervisor and time pipe junction.
Description
Technical field
The present invention relates to linear low density polyethylene fire retardant sleeve and preparation method technical field, specially a kind of linea low density
Polyethylene anti-flaming pipe and preparation method thereof.
Background technique
Linear low density polyethylene is nontoxic, tasteless, odorless milky white granules, it is compared with low density polyethylene (LDPE), tool
There are higher softening temperature and melting temperature, has the advantages that intensity is big, good toughness, rigidity is big, heat-resisting, cold resistance is good, also have
Good environmental stress crack resistance, the performances such as impact resistant strength, tear-resistant intensity, and can acid and alkali resistance, organic solvent etc. and it is wide
It is general for industry, agricultural, medicine, health and the fields such as daily necessities, due to its with intensity big, good toughness, rigidity it is big,
The characteristics such as heat-resisting and cold resistance is good, linear low density polyethylene is in tubing production, it may have extensive use；
But existing linear low density polyethylene tubing is in production currently on the market, linear low density polyethylene tubing
In injection molding, cooling and sizing, it is easy because of the water cooling and air-cooled methods for cooling mistake when linear low density polyethylene tubing is cooling
In single, cooling effect is bad, causes the linear low density polyethylene tubing circularity produced not high, linear low density polyethylene
The appearance of tubing is easy to produce the appearance of the flaws such as ripple, influences the effect that linear low density polyethylene tubing is produced.
Summary of the invention
The present invention provides a kind of technical solution, can effectively solve linear low density polyethylene mentioned above in the background art
Alkene tubing is easy in injection molding, cooling and sizing because of the water cooling and air-cooled cooling when linear low density polyethylene tubing is cooling
Form is excessively single, and cooling effect is bad, causes the linear low density polyethylene tubing circularity produced not high, linea low density
The appearance of polyvinyl piping materials is easy to produce the appearance of the flaws such as ripple, influences the effect that linear low density polyethylene tubing is produced
Problem.
To achieve the above object, the invention provides the following technical scheme: a kind of linear low density polyethylene fire retardant pipe makes
Method includes the following steps:
S1, sorting: raw material needed for choosing tubing production is proportionally matched；
S2, drying: the tubing after mixing makes feedstock transportation to drying box and carries out drying dehumidification；
S3, plasticizing: by the tubing production feedstock transportation after drying into extruding machine, tubing production raw material is sheared,
Extruding, melting and preplasticizing；
S4, injection molding: making raw material for the tubing after plasticizing, is squeezed into tubing production mold, is tentatively formed；
S5, cooling: preliminary molding tubing will be put into calibration sleeve, cooling water is conveyed into calibration sleeve to first one-step forming
Tubing carry out cooling and shaping；
S6, sizing: Vacuum shaping is carried out to by the cooling tubing of calibration sleeve by vacuum setting machine；
S7, detection and recycling: it is classified and the progress such as length, weight, circularity and appearance situation is carried out to the tubing made
Detection, underproof tubing are recycled after crushing；
S8, it is packed and stored: qualified tubing shrinks tubing according to quota quantity entrucking, and by thermal shrinkage film machine
Film packaging, record pack the time and take in warehouse and saved.
According to the above technical scheme, raw material needed for selection tubing described in step 1 makes is linear low density polyethylene 60
Part, 6 parts of antimony oxide, 6 parts of chlorinated paraffin, 10 parts of aluminium hydroxide, 3 parts of coupling agent, 15 parts of masterbatch.
According to the above technical scheme, the drying temperature of drying box described in step 2 is 70 DEG C.
According to the above technical scheme, the heating temperature of extruding machine described in step 3 is 130 DEG C, the power supply of the extruding machine
For 220V alternating current.
According to the above technical scheme, it is provided with muff on the outside of the production of tubing described in step 4 mold, tubing can be infused
It is kept the temperature when mould.
According to the above technical scheme, the cooling water connection outer tank conveyed described in step 5 into calibration sleeve, is recycled
Carry out using.
According to the above technical scheme, the rated power of vacuum setting machine described in step 6 is 1500W, the Vacuum shaping
The power supply of machine is 220V alternating current.
It according to the above technical scheme, can be by ink jet numbering machine to qualification before tubing quota entrucking qualified described in step 8
Lettering is carried out on tubing.
One end outside of a kind of linear low density polyethylene fire retardant pipe, including supervisor, the supervisor is equipped with mounting base, institute
The side for stating mounting base is connected with the first fixing seat, and the side of first fixing seat is equipped with second by fastening screw and fixes
The junction of seat, first fixing seat and the second fixing seat is equipped with sealing ring, and the side of second fixing seat is embedded in peace
Equipped with fixing screws, time pipe is installed on the inside of second fixing seat.
According to the above technical scheme, the side of the supervisor offers annular fixing groove, the side of the annular fixing groove
First seal is installed, the side of the first seal is equipped with elastic washer, and the other side of the first seal is equal
It is even to be connected with Telescopic positioning lever, fastening spring is socketed on the outside of the Telescopic positioning lever, the side of the Telescopic positioning lever is logical
It crosses mounting screw and second seal is installed, the side of the second seal, which is uniformly embedded into, is equipped with mounting screw, and described
Two sealing elements and being connected with for first seal are equipped with telescopic band.
Compared with prior art, beneficial effects of the present invention: structure of the invention is scientific and reasonable, safe and convenient to use: passing through
Calibration sleeve carries out cooling and passes through vacuum setting machine to linear low density polyethylene fire retardant to linear low density polyethylene fire retardant pipe
Pipe is cooled down, and situations such as ripple, spot are generated on the outside of the linear low density polyethylene fire retardant pipe prepared can be effectively reduced,
Reduce linear low density polyethylene fire retardant control for when generate appearance flaw；It is 60 parts by the way that linear low density polyethylene is added,
Antimony oxide is 6 parts, and chlorinated paraffin is 6 parts, and aluminium hydroxide is 10 parts, and coupling agent is 3 parts, and the raw material that masterbatch is 15 parts can
Obtain the optimal low density polyethylene fire retardant tubing of comprehensive performance；Dehumidification is carried out to mixed raw material is matched by drying box,
When can effectively guarantee the production of low density polyethylene fire retardant tubing, the moisture contained in raw material will not influence low density polyethylene (LDPE)
The preparation of anti-flaming tubular product, to ensure that the quality of low density polyethylene fire retardant tubing；By Telescopic positioning lever and fastening spring,
First seal and second seal can be pressed respectively against in annular fixing groove, to be carried out to supervisor and time pipe junction close
Envelope, by fastening screw, can fasten the first fixing seat and the second fixing seat, thus solid to carrying out installing between tubing
It is fixed.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is preparation method flow chart of the invention；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is the perspective view of the explosion of the first fixing seat of the invention；
Figure label: 1, it is responsible for；2, the first fixing seat；3, the second fixing seat；4, secondary pipe；5, mounting base；6, sealing ring；7,
Fastening screw；8, annular fixing groove；9, first seal；10, second seal；11, mounting screw；12, Telescopic positioning lever；
13, telescopic band；14, elastic washer；15, fastening spring.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment 1: as shown in Figure 1, the present invention provides a kind of technical solution, a kind of linear low density polyethylene fire retardant control
Make method, includes the following steps:
S1, sorting: raw material needed for choosing tubing production is proportionally matched；
S2, drying: the tubing after mixing makes feedstock transportation to drying box and carries out drying dehumidification；
S3, plasticizing: by the tubing production feedstock transportation after drying into extruding machine, tubing production raw material is sheared,
Extruding, melting and preplasticizing；
S4, injection molding: making raw material for the tubing after plasticizing, is squeezed into tubing production mold, is tentatively formed；
S5, cooling: preliminary molding tubing will be put into calibration sleeve, cooling water is conveyed into calibration sleeve to first one-step forming
Tubing carry out cooling and shaping；
S6, sizing: Vacuum shaping is carried out to by the cooling tubing of calibration sleeve by vacuum setting machine；
S7, detection and recycling: it is classified and the progress such as length, weight, circularity and appearance situation is carried out to the tubing made
Detection, underproof tubing are recycled after crushing；
S8, it is packed and stored: qualified tubing shrinks tubing according to quota quantity entrucking, and by thermal shrinkage film machine
Film packaging, record pack the time and take in warehouse and saved.
According to the above technical scheme, in step 1 choose tubing make needed for raw material be 60 parts of linear low density polyethylene, three
Aoxidize 6 parts of two antimony, 6 parts of chlorinated paraffin, 10 parts of aluminium hydroxide, 3 parts of coupling agent, 15 parts of masterbatch.
According to the above technical scheme, the drying temperature of drying box is 70 DEG C in step 2.
According to the above technical scheme, the heating temperature of extruding machine is 130 DEG C in step 3, and the power supply of extruding machine is 220V friendship
Galvanic electricity.
According to the above technical scheme, it is provided with muff on the outside of tubing production mold in step 4, when can be to tubing injection molding
It is kept the temperature.
According to the above technical scheme, the cooling water connection outer tank conveyed in step 5 into calibration sleeve, is recycled and carries out
It uses.
According to the above technical scheme, the rated power of vacuum setting machine is 1500W, the power supply of vacuum setting machine in step 6
For 220V alternating current.
It according to the above technical scheme, can be by ink jet numbering machine to qualified tubing before tubing quota entrucking qualified in step 8
Upper carry out lettering.
Embodiment 2: as shown in Figure 1, the present invention provides a kind of technical solution, a kind of linear low density polyethylene fire retardant control
Make method, includes the following steps:
S1, sorting: raw material needed for choosing tubing production is proportionally matched；
S2, drying: the tubing after mixing makes feedstock transportation to drying box and carries out drying dehumidification；
S3, plasticizing: by the tubing production feedstock transportation after drying into extruding machine, tubing production raw material is sheared,
Extruding, melting and preplasticizing；
S4, injection molding: making raw material for the tubing after plasticizing, is squeezed into tubing production mold, is tentatively formed；
S5, cooling: preliminary molding tubing will be put into calibration sleeve, cooling water is conveyed into calibration sleeve to first one-step forming
Tubing carry out cooling and shaping；
S6, sizing: Vacuum shaping is carried out to by the cooling tubing of calibration sleeve by vacuum setting machine；
S7, detection and recycling: it is classified and the progress such as length, weight, circularity and appearance situation is carried out to the tubing made
Detection, underproof tubing are recycled after crushing；
S8, it is packed and stored: qualified tubing shrinks tubing according to quota quantity entrucking, and by thermal shrinkage film machine
Film packaging, record pack the time and take in warehouse and saved.
According to the above technical scheme, in step 1 choose tubing make needed for raw material be 50 parts of linear low density polyethylene, three
Aoxidize 8 parts of two antimony, 8 parts of chlorinated paraffin, 12 parts of aluminium hydroxide, 4 parts of coupling agent, 18 parts of masterbatch.
According to the above technical scheme, the drying temperature of drying box is 70 DEG C in step 2.
According to the above technical scheme, the heating temperature of extruding machine is 130 DEG C in step 3, and the power supply of extruding machine is 220V friendship
Galvanic electricity.
According to the above technical scheme, it is provided with muff on the outside of tubing production mold in step 4, when can be to tubing injection molding
It is kept the temperature.
According to the above technical scheme, the cooling water connection outer tank conveyed in step 5 into calibration sleeve, is recycled and carries out
It uses.
According to the above technical scheme, the rated power of vacuum setting machine is 1500W, the power supply of vacuum setting machine in step 6
For 220V alternating current.
It according to the above technical scheme, can be by ink jet numbering machine to qualified tubing before tubing quota entrucking qualified in step 8
Upper carry out lettering.
Embodiment 3: as shown in Figure 1, the present invention provides a kind of technical solution, a kind of linear low density polyethylene fire retardant control
Make method, includes the following steps:
S1, sorting: raw material needed for choosing tubing production is proportionally matched；
S2, drying: the tubing after mixing makes feedstock transportation to drying box and carries out drying dehumidification；
S3, plasticizing: by the tubing production feedstock transportation after drying into extruding machine, tubing production raw material is sheared,
Extruding, melting and preplasticizing；
S4, injection molding: making raw material for the tubing after plasticizing, is squeezed into tubing production mold, is tentatively formed；
S5, cooling: preliminary molding tubing will be put into calibration sleeve, cooling water is conveyed into calibration sleeve to first one-step forming
Tubing carry out cooling and shaping；
S6, sizing: Vacuum shaping is carried out to by the cooling tubing of calibration sleeve by vacuum setting machine；
S7, detection and recycling: it is classified and the progress such as length, weight, circularity and appearance situation is carried out to the tubing made
Detection, underproof tubing are recycled after crushing；
S8, it is packed and stored: qualified tubing shrinks tubing according to quota quantity entrucking, and by thermal shrinkage film machine
Film packaging, record pack the time and take in warehouse and saved.
According to the above technical scheme, in step 1 choose tubing make needed for raw material be 70 parts of linear low density polyethylene, three
Aoxidize 4 parts of two antimony, 4 parts of chlorinated paraffin, 8 parts of aluminium hydroxide, 2 parts of coupling agent, 12 parts of masterbatch.
According to the above technical scheme, the drying temperature of drying box is 70 DEG C in step 2.
According to the above technical scheme, the heating temperature of extruding machine is 130 DEG C in step 3, and the power supply of extruding machine is 220V friendship
Galvanic electricity.
According to the above technical scheme, it is provided with muff on the outside of tubing production mold in step 4, when can be to tubing injection molding
It is kept the temperature.
According to the above technical scheme, the cooling water connection outer tank conveyed in step 5 into calibration sleeve, is recycled and carries out
It uses.
According to the above technical scheme, the rated power of vacuum setting machine is 1500W, the power supply of vacuum setting machine in step 6
For 220V alternating current.
It according to the above technical scheme, can be by ink jet numbering machine to qualified tubing before tubing quota entrucking qualified in step 8
Upper carry out lettering.
Embodiment 4: as Figure 2-3, a kind of linear low density polyethylene fire retardant pipe, including supervisor 1, it is responsible for 1 one end
Outside is equipped with mounting base 5, and the side of mounting base 5 is connected with the first fixing seat 2, and the side of the first fixing seat 2 passes through fastening spiral shell
Nail 7 is equipped with the second fixing seat 3, and the junction of the first fixing seat 2 and the second fixing seat 3 is equipped with sealing ring 6, the second fixing seat
3 side insertion is equipped with fixing screws 7, and the inside of the second fixing seat 3 is equipped with time pipe 4.
According to the above technical scheme, the side for being responsible for 1 offers annular fixing groove 8, and the side of annular fixing groove 8 is equipped with
First seal 9, the side of first seal 9 are equipped with elastic washer 14, and the other side of first seal 9, which is uniformly connected with, stretches
Contracting locating rod 12, the outside of Telescopic positioning lever 12 are socketed with fastening spring 15, and the side of Telescopic positioning lever 12 passes through mounting screw
11 are equipped with second seal 10, and the side of second seal 10, which is uniformly embedded into, is equipped with mounting screw 11, second seal 10
Telescopic band 13 is installed with being connected with for first seal 9.
The linear low density polyethylene fire retardant pipe that the present invention is prepared according to embodiment 1-3 detects, as a result such as table 1,
1 testing result of table
| Inspection project | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Flame retardant property | It is nonflammable | It is nonflammable | It is nonflammable |
| Corrosion resistance | It is not perishable | It is not perishable | Easily by acid corrosion |
| Break resistance | It is not easy to break | Easy fracture | It is not easy to break |
| Resistance to low temperature | It is low temperature resistant | It is more low temperature resistant | It is more low temperature resistant |
By testing result it can be found that when preparing linear low density polyethylene fire retardant pipe, by the way that linea low density is added
Polyethylene is 60 parts, and antimony oxide is 6 parts, and chlorinated paraffin is 6 parts, and aluminium hydroxide is 10 parts, and coupling agent is 3 parts, and masterbatch is
When 15 parts of raw material, the linear low density polyethylene fire retardant pipe comprehensive performance prepared is optimal.
Based on above-mentioned, the present invention has the advantages that linear low density polyethylene fire retardant pipe prepared by the present invention, is making
When, it carries out cooling to linear low density polyethylene fire retardant pipe by calibration sleeve and passes through vacuum setting machine to linear low density polyethylene
Alkene Frpipe is cooled down, and can effectively be reduced and be generated ripple, spot on the outside of the linear low density polyethylene fire retardant pipe prepared
Situations such as, reduce linear low density polyethylene fire retardant control for when generate appearance flaw, when proportion after sorting, pass through addition
Linear low density polyethylene is 60 parts, and antimony oxide is 6 parts, and chlorinated paraffin is 6 parts, and aluminium hydroxide is 10 parts, coupling agent 3
Part, the raw material that masterbatch is 15 parts can be obtained the optimal low density polyethylene fire retardant tubing of comprehensive performance, after sorting, can pass through baking
Dry case carries out dehumidification to mixed raw material is matched, when can effectively guarantee the production of low density polyethylene fire retardant tubing, raw material
In the moisture that contains will not influence the preparation of low density polyethylene fire retardant tubing, to ensure that low density polyethylene fire retardant tubing
Quality, tubing passes through Telescopic positioning lever 12 and fastening spring in use, can fill in first seal 9 in annular fixing groove 8
15, first seal 9 and second seal 10 can be pressed respectively against in annular fixing groove 8, to be connected to supervisor 1 and time pipe 4
Place is sealed, and by fastening screw 7, can be fastened the first fixing seat 3 and the second fixing seat 4, thus to supervisor 1 and time
Installation fixation is carried out between pipe 4.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely preferred embodiment of the invention, to the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, for those skilled in the art, still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of linear low density polyethylene fire retardant pipe production method, characterized by the following steps:
S1, sorting: raw material needed for choosing tubing production is proportionally matched；
S2, drying: the tubing after mixing makes feedstock transportation to drying box and carries out drying dehumidification；
S3, plasticizing: by the tubing production feedstock transportation after drying into extruding machine, tubing production raw material is sheared, is squeezed,
Melting and preplasticizing；
S4, injection molding: making raw material for the tubing after plasticizing, is squeezed into tubing production mold, is tentatively formed；
S5, cooling: will be put into calibration sleeve preliminary molding tubing, and cooling water is conveyed into calibration sleeve to preliminary molding pipe
Material carries out cooling and shaping；
S6, sizing: Vacuum shaping is carried out to by the cooling tubing of calibration sleeve by vacuum setting machine；
S7, detection and recycling: being classified and detect to tubing progress length, weight, circularity and appearance situation etc. for making,
Underproof tubing is recycled after crushing；
S8, it is packed and stored: by qualified tubing according to quota quantity entrucking, and shrink film packet being carried out to tubing by thermal shrinkage film machine
Dress, record pack the time and take in warehouse and saved.
2. a kind of linear low density polyethylene fire retardant pipe production method according to claim 1, which is characterized in that step 1
Described in selection tubing make needed for raw material be 60 parts of linear low density polyethylene, 6 parts of antimony oxide, 6 parts of chlorinated paraffin, hydrogen
10 parts of aluminium oxide, 3 parts of coupling agent, 15 parts of masterbatch.
3. a kind of linear low density polyethylene fire retardant pipe production method according to claim 1, which is characterized in that step 2
Described in drying box drying temperature be 70 DEG C.
4. a kind of linear low density polyethylene fire retardant pipe production method according to claim 1, which is characterized in that step 3
Described in the heating temperature of extruding machine be 130 DEG C, the power supply of the extruding machine is 220V alternating current.
5. a kind of linear low density polyethylene fire retardant pipe production method according to claim 1, which is characterized in that step 4
Described in be provided with muff on the outside of tubing production mold, keep the temperature when can be to tubing injection molding.
6. a kind of linear low density polyethylene fire retardant pipe production method according to claim 1, which is characterized in that step 5
Described in the cooling water connection outer tank that is conveyed into calibration sleeve, it is recyclable carry out using.
7. a kind of linear low density polyethylene fire retardant pipe production method according to claim 1, which is characterized in that step 6
Described in the rated power of vacuum setting machine be 1500W, the power supply of the vacuum setting machine is 220V alternating current.
8. a kind of linear low density polyethylene fire retardant pipe production method according to claim 1, which is characterized in that step 8
Described in front of qualified tubing quota entrucking, can be by ink jet numbering machine to carrying out lettering on qualified tubing.
9. a kind of linear low density polyethylene fire retardant pipe, including supervisor (1), it is characterised in that: on the outside of one end of the supervisor (1)
It being equipped with mounting base (5), the side of the mounting base (5) is connected with the first fixing seat (2), and the one of first fixing seat (2)
Side is equipped with the second fixing seat (3) by fastening screw (7), the junction of first fixing seat (2) and the second fixing seat (3)
It is equipped with sealing ring (6), the side insertion of second fixing seat (3) is equipped with fixing screws (7), second fixing seat
(3) time pipe (4) is installed on the inside of.
10. a kind of linear low density polyethylene fire retardant pipe according to claim 9, which is characterized in that the supervisor (1)
Side offers annular fixing groove (8), and the side of the annular fixing groove (8) is equipped with first seal (9), and described first is close
The side of sealing (9) is equipped with elastic washer (14), and the other side of the first seal (9) is uniformly connected with Telescopic positioning lever
(12), it is socketed with fastening spring (15) on the outside of the Telescopic positioning lever (12), the side of the Telescopic positioning lever (12) passes through
Mounting screw (11) is equipped with second seal (10), and the side of the second seal (10), which is uniformly embedded into, is equipped with installation spiral shell
It follows closely (11), the second seal (10) and being connected with for first seal (9) are equipped with telescopic band (13).
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| CN201811060261.7A CN109291357A (en) | 2018-09-12 | 2018-09-12 | A kind of linear low density polyethylene fire retardant pipe and preparation method thereof |
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| CN201811060261.7A CN109291357A (en) | 2018-09-12 | 2018-09-12 | A kind of linear low density polyethylene fire retardant pipe and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645415A (en) * | 2019-09-27 | 2020-01-03 | 镇江荣诚管业有限公司 | Dampproof high-temperature-resistant PE pipe and processing technology thereof |
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