CN106393644A - Production technology of PVC-C sleeve for protecting buried type high-voltage power cable - Google Patents
Production technology of PVC-C sleeve for protecting buried type high-voltage power cable Download PDFInfo
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- CN106393644A CN106393644A CN201610799139.6A CN201610799139A CN106393644A CN 106393644 A CN106393644 A CN 106393644A CN 201610799139 A CN201610799139 A CN 201610799139A CN 106393644 A CN106393644 A CN 106393644A
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
-
- 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
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
-
- 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
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/82—Heating or cooling
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/926—Flow or feed rate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/06—PVC, i.e. polyvinylchloride
-
- 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
Abstract
The invention discloses a production technology of a PVC-C sleeve for protecting a buried type high-voltage power cable. According to the production technology of the PVC-C sleeve for protecting the buried type high-voltage power cable, inspection of raw and auxiliary materials, material mixing, high-speed kneading, cooling, stirring, feeding, plasticizing, extrusion, cooling, vacuum shaping, traction and cutting are involved. The production technology of the PVC-C sleeve for protecting the buried type high-voltage power cable comprises the following steps of S1, inspecting the raw and auxiliary materials, wherein main raw materials and auxiliary products which are supplied to the factory are inspected by a quality inspection department, the main raw materials and the auxiliary material products which do not pass the inspection are disposed, and the main raw materials and the auxiliary material products which pass the inspection are used for material preparation; and S2, conducting material preparation, wherein ingredients are weighed and prepared according to a formula card, a weighing instrument needs to be cleaned and calibrated before weighing, agglomerated materials, materials affected with damp and materials containing impurities are removed before weighing, problems are solved in time if being found, and the materials need to be independently weighed in sequence according to the formula card. The production technology of the PVC-C sleeve for protecting the buried type high-voltage power cable has the advantages of being simple in process and low in cost and solves the problem that the quality of products produced through ordinary PVC-C sleeve production technologies is poor.
Description
Technical field
The present invention relates to PVC-C sleeve pipe production technical field, specially a kind of buried high voltage power cable protection use
PVC-C process for producing casing.
Background technology
At present, China's high voltage power cable power transmission line enters into buried, buried high voltage power cable comb from built on stilts
Industry also adopts cement asbestos pipe more at large.Therefore adopt high intensity, corrosion-resistant, pollution-free and construction and installation easily new
Electrical cable protection sleeve has become the common requirements of electricity channel industry.Japan in the early 1990s the phase just a large amount of using a kind of with
CPVC is the type ground-buried power cable protection pipe of base material, and this product has that heat resistance is good, the spy such as intensity is high, long service life
Point.Using this protection pipe. in construction, the outside of tubing all need not be reinforced with other materials, and directly uses sand and soil backfill
Can construct paragraph by paragraph, save artificial it is not required that closing a road to traffic to construction site, easy construction, quick.At present, existing
PVC-C process for producing casing process for the protection of buried high voltage power cable is loaded down with trivial details, relatively costly, the product produced
Quality is poor.
Content of the invention
It is an object of the invention to provide PVC-C process for producing casing is used in a kind of buried high voltage power cable protection, tool
Standby process is simple, lower-cost advantage, solves the product quality that general PVC-C process for producing casing produces poor
Problem.
For achieving the above object, the present invention provides following technical scheme：A kind of buried high voltage power cable protection is used
PVC-C process for producing casing, including the inspection of raw and auxiliary material, dispensing, at a high speed kneading, cooling and stirring, feed, plasticizing, extrusion, cold
But Vacuum shaping, traction and cutting, comprise the following steps：
S1, the inspection of raw and auxiliary material：First the main material entering factory and adjuvant are tested by quality inspection section, will through inspection not
Qualified main material and adjuvant product treatment are fallen, and by through checking qualified main material and adjuvant product to carry out dispensing.
S2, dispensing：Dispensing is carried out weighing by prescription-filling card and prepares, should clear up to weighing utensil before weighing, verification, clearly
Except caking, make moist and the material containing impurity, timely process of pinpointing the problems, material weighing individually should be claimed successively by prescription-filling card order
Amount, each independent material is mixed with filler with lubricant, reinforcing agent, pigment by stabilizer after weighing puts into Plastic Drum or plastics
In bag, accurate for further ensuring that batch weighing, the material after formula is carried out multiple title, control accuracy is prescription-filling card quantity
In the range of 0.05kg.
S3, at a high speed kneading：By prescription-filling card quantity, resin is poured into bin stock car, before downtree fat, should be by outside package resin bag
Impurity etc. removes, and then low speed opens machine, by conveying worm, resin is all added in high-speed kneader, and then
Add stabilizer and lubricant to open machine at high speeds operating, to material temperature show 90 ± 5 DEG C when, addition reinforcing agent, pigment and filling
Agent, when material temperature shows 115 ± 5 DEG C, opens machine Dump gate, material is discharged in cooling and stirring machine.
S4, cooling and stirring：Before high-speed kneader discharging, open cooling and stirring machine, material is under cooling and stirring built-in temperature
It is down to less than 40 ± 10 DEG C, material is discharged into the bin stock car under cooling and stirring machine, can lower the temperature rapidly for guarantee material, cooling and stirring
Machine intake pressure is transferred to more than 0.4Mpa, and the material after cooled stirring is in loose shape, uniform color, no yellowing phenomenon.
S5, feed：By auger conveyor, the in-car material of bin stock is delivered to the position of each extruder material.
S6, plasticizing and extrusion：
(1) heat up：Each machine barrel and die head temperature are warming up to 140 DEG C, are incubated 1 hour, then are warming up to by technological requirement and set
Definite value.
(2) screw rod：Because screw rod programming rate is very fast, therefore the barrel heating-up time can be later than during operation, first step during intensification
First temperature is adjusted to 60 DEG C, and is at least incubated 20 minutes, second step every 10 is heated for one-level with 10 DEG C respectively, until heating
To technological requirement temperature.
(3) power-on operation：After each section of temperature has uniformly reached technique productions temperature, and after being incubated at least 30 minutes, open
Beginning entrance feeds intake production, starts main frame, so that main-machine screw operate under the slow-speed of revolution (5 revs/min about), and feed of then opening an account is electric
Machine, material is noticed that screw speed is matched with charging rate, feeding amount can not be excessive from slow to being added in screw rod,
Can not be not enough, after die head discharging, ramp up screw rod with charging rate to processing parameter, when charging rate is turned with screw rod
After speed coupling is proper, synchronize speed governing, after extruded product is normal, starts main frame vacuum pump, material is proceeded by with aerofluxuss, just
After often producing, start to observe the change of temperature and screw speed, moment of torsion, melt pressure parameter etc. on extruder, and every two hours
Make one-time process record.
(4) shut down：Normal produce terminate after, close vacuum exhaust pump, close charging motor, reduce screw speed to 5 turns/
About point, each machine barrel and die head temperature are down to 140 DEG C, close screw rod heating system.Feed way is slowly from addition by hand
Cleaning material, and the charging rate cleaning material can not be too fast, in order to avoid material screw rod over loading from vacuum port overflow, treats that die head squeezes
After going out cleaning material, stop charging, stop screw rod and rotate, close each section of temperature, cut off host power supply.
S7, cooling vacuum sizing：
(1) preparation：It is more than 0.4Mpa in pressure of supply water, water temperature, when 10-25 DEG C, is produced, for ensureing start
When vacuum pump energy normal work, first the moisturizing ball valve of each vacuum pump is opened before start；Check shaping box so as to sufficiently sealed,
For ensureing cool water shower normal work, check the spray unimpeded situation of faucet, load onto shaping cover in qualitative case, make shaping cover
With die head extrusion direction in line.
(2) operate：Initial shaping can be started after extruded material ideal, can start after reaching drawing length after electric power length of tube
Traction, first start cooling water pump, then open vacuum pump, make power pipe vac sorb and cooling water effect under with shaping cover
In being in close contact simultaneously cooling and shaping, start to observe the water level of water tank in running, water level height is right by two tunnel water outlets
Valve control, by water lev el control in vacuum pump exhaust port with next segment distance, in running water tank vacuum be 0.02Mpa with
On, and make power pipe keep enough circularity.
(3) shut down：Cut off the water supply during shutdown, power supply, left a certain amount of water in water tank, so as next time drive, if
A few days to be shut down, then should drain in vacuum pump remain water, and in water supplement port inject saponification liquor, with antirust lead to restart when rotor
Kill.
S8, traction：
(1) preparation：Check whether each crawler belt is parallel, such as find not parallel, should adjust in time, check upper two crawler belts
Whether steadily long fall, if undesirable, checks whether gas circuit is normal, whether gas leakage on joint, must be with cutting above lower crawler belt
The work top of machine forms same plane, also will adjust Work bench of cutting machine height if necessary.
(2) operate：After material to be extruded is normal, drawn with copper core electric wire, extrusion electric power tubing is drawn to traction machine
On, power pipe should ensure that balance moves ahead between each crawler belt, changes power pipe by adjusting hauling speed and die head set screw
Wall thickness, to critical field, adjusts traction pressure, makes power pipe non-slip, do not flatten so as to reach regulation dacron overall dimensions.
S9, cutting：
(1) preparation：Carry out no-load running, check whether each action of cutting machine is normal.
(2) operate：After normal production, fixed length cutting is carried out to power pipe, otch should be vertical and smooth.
Compared with prior art, beneficial effects of the present invention are as follows：This invention produces to PVC-C sleeve pipe and includes raw and auxiliary material
Inspection, dispensing, the at a high speed step such as kneading, cooling and stirring, feed, plasticizing, extrusion, cooling vacuum sizing, traction and cutting, have
Standby process is simple, lower-cost advantage, solves the product quality that general PVC-C process for producing casing produces poor
Problem.
Brief description
Fig. 1 is technological process of production schematic diagram of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1, a kind of buried high voltage power cable protection uses PVC-C process for producing casing, including raw and auxiliary material
Inspection, dispensing, at a high speed kneading, cooling and stirring, feed, plasticizing, extrusion, cooling vacuum sizing, traction and cut, including below
Step：
S1, the inspection of raw and auxiliary material：First the main material entering factory and adjuvant are tested by quality inspection section, will through inspection not
Qualified main material and adjuvant product treatment are fallen, and by through checking qualified main material and adjuvant product to carry out dispensing.
S2, dispensing：Dispensing is carried out weighing by prescription-filling card and prepares, should clear up to weighing utensil before weighing, verification, clearly
Except caking, make moist and the material containing impurity, timely process of pinpointing the problems, material weighing individually should be claimed successively by prescription-filling card order
Amount, each independent material is mixed with filler with lubricant, reinforcing agent, pigment by stabilizer after weighing puts into Plastic Drum or plastics
In bag, accurate for further ensuring that batch weighing, the material after formula is carried out multiple title, control accuracy is prescription-filling card quantity
In the range of 0.05kg.
S3, at a high speed kneading：By prescription-filling card quantity, resin is poured into bin stock car, before downtree fat, should be by outside package resin bag
Impurity etc. removes, and then low speed opens machine, by conveying worm, resin is all added in high-speed kneader, and then
Add stabilizer and lubricant to open machine at high speeds operating, to material temperature show 90 ± 5 DEG C when, addition reinforcing agent, pigment and filling
Agent, when material temperature shows 115 ± 5 DEG C, opens machine Dump gate, material is discharged in cooling and stirring machine.
S4, cooling and stirring：Before high-speed kneader discharging, open cooling and stirring machine, material is under cooling and stirring built-in temperature
It is down to less than 40 ± 10 DEG C, material is discharged into the bin stock car under cooling and stirring machine, can lower the temperature rapidly for guarantee material, cooling and stirring
Machine intake pressure is transferred to more than 0.4Mpa, and the material after cooled stirring is in loose shape, uniform color, no yellowing phenomenon.
S5, feed：By auger conveyor, the in-car material of bin stock is delivered to the position of each extruder material.
S6, plasticizing and extrusion：
Plasticizing：Molding materials are added to extruder barrel by extruder hopper, the gyratory compaction of barrel zone temperature and screw rod
And under immixture, material has powdery or granular solids, it is transformed into the uniformly continuous melt process with certain fluidity.
Extrusion：Thermoplastic resin and various help mix homogeneously after, in extruder barrel be subject to mechanical shear cutting knife, frictional heat
Effect with exterior-heat is allowed to plastify melting, then under screw rod push forward, fused materials pass through filter plate or adapter enters not
Congener mould, and make the forming method of the various products of continuous length
(1) heat up：Each machine barrel and die head temperature are warming up to 140 DEG C, are incubated 1 hour, then are warming up to by technological requirement and set
Definite value.
(2) screw rod：Because screw rod programming rate is very fast, therefore the barrel heating-up time can be later than during operation, first step during intensification
First temperature is adjusted to 60 DEG C, and is at least incubated 20 minutes, second step every 10 is heated for one-level with 10 DEG C respectively, until heating
To technological requirement temperature.
(3) power-on operation：After each section of temperature has uniformly reached technique productions temperature, and after being incubated at least 30 minutes, open
Beginning entrance feeds intake production, starts main frame, so that main-machine screw operate under the slow-speed of revolution (5 revs/min about), and feed of then opening an account is electric
Machine, material is noticed that screw speed is matched with charging rate, feeding amount can not be excessive from slow to being added in screw rod,
Can not be not enough, after die head discharging, ramp up screw rod with charging rate to processing parameter, when charging rate is turned with screw rod
After speed coupling is proper, synchronize speed governing, after extruded product is normal, starts main frame vacuum pump, material is proceeded by with aerofluxuss, just
After often producing, start to observe the change of temperature and screw speed, moment of torsion, melt pressure parameter etc. on extruder, and every two hours
Make one-time process record.
(4) shut down：Normal produce terminate after, close vacuum exhaust pump, close charging motor, reduce screw speed to 5 turns/
About point, each machine barrel and die head temperature are down to 140 DEG C, close screw rod heating system.Feed way is slowly from addition by hand
Cleaning material, and the charging rate cleaning material can not be too fast, in order to avoid material screw rod over loading from vacuum port overflow, treats that die head squeezes
After going out cleaning material, stop charging, stop screw rod and rotate, close each section of temperature, cut off host power supply.
S7, cooling vacuum sizing：
(1) preparation：It is more than 0.4Mpa in pressure of supply water, water temperature, when 10-25 DEG C, is produced, for ensureing start
When vacuum pump energy normal work, first the moisturizing ball valve of each vacuum pump is opened before start；Check shaping box so as to sufficiently sealed,
For ensureing cool water shower normal work, check the spray unimpeded situation of faucet, load onto shaping cover in qualitative case, make shaping cover
With die head extrusion direction in line.
(2) operate：Initial shaping can be started after extruded material ideal, can start after reaching drawing length after electric power length of tube
Traction, first start cooling water pump, then open vacuum pump, make power pipe vac sorb and cooling water effect under with shaping cover
In being in close contact simultaneously cooling and shaping, start to observe the water level of water tank in running, water level height is right by two tunnel water outlets
Valve control, by water lev el control in vacuum pump exhaust port with next segment distance, in running water tank vacuum be 0.02Mpa with
On, and make power pipe keep enough circularity.
(3) shut down：Cut off the water supply during shutdown, power supply, left a certain amount of water in water tank, so as next time drive, if
A few days to be shut down, then should drain in vacuum pump remain water, and in water supplement port inject saponification liquor, with antirust lead to restart when rotor
Kill.
S8, traction：
(1) preparation：Check whether each crawler belt is parallel, such as find not parallel, should adjust in time, check upper two crawler belts
Whether steadily long fall, if undesirable, checks whether gas circuit is normal, whether gas leakage on joint, must be with cutting above lower crawler belt
The work top of machine forms same plane, also will adjust Work bench of cutting machine height if necessary.
(2) operate：After material to be extruded is normal, drawn with copper core electric wire, extrusion electric power tubing is drawn to traction machine
On, power pipe should ensure that balance moves ahead between each crawler belt, changes power pipe by adjusting hauling speed and die head set screw
Wall thickness, to critical field, adjusts traction pressure, makes power pipe non-slip, do not flatten so as to reach regulation dacron overall dimensions.
S9, cutting：
(1) preparation：Carry out no-load running, check whether each action of cutting machine is normal.
(2) operate：After normal production, fixed length cutting is carried out to power pipe, otch should be vertical and smooth.
Warehouse-in：Finished product is made, then again after quality testing, qualified finished product starts to put in storage, no after carrying out quality testing
Qualified disposes.
This invention PVC-C sleeve pipe is produced includes the inspection of raw and auxiliary material, dispensing, high speed kneading, cooling and stirring, feed,
The steps such as plasticizing, extrusion, cooling vacuum sizing, traction and cutting, it is simple to possess process, and lower-cost advantage solves one
As the poor problem of the product quality produced of PVC-C process for producing casing.
During production：Forbid to disclose material in barrel air vent metal bar, in order to avoid damaging barrel with screw rod it should use flexible plastic
Pipe carries out disclosing material, adds the powder in hopper must clean no free from admixture, metal sundries can not be had to be mixed into, in order to protect screw rod not
It is damaged, must running check and the adsorbate excluded on magnetic frame in loading hopper, the internal calorstat of running check machine and cooling
The oil level of fuel tank, and supplement high temperature oil in time, according to equipment periodic service condition, the attachment in screw rod and barrel must be cleared up in time
Thing, to ensure quality of item, when the material only at merging core is in melt and dissolved state, non-dismountable pressure transducer, if main frame
Moment of torsion or melt pressure are reported to the police, and constantly should reduce feeding quantity and screw speed, and check reason, take measures to solve in time.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (1)
1. PVC-C process for producing casing is used in a kind of buried high voltage power cable protection, including the inspection of raw and auxiliary material, dispensing,
At a high speed kneading, cooling and stirring, feed, plasticizing, extrusion, cooling vacuum sizing, traction and cut it is characterised in that：Including following
Step：
S1, the inspection of raw and auxiliary material：First the main material entering factory and adjuvant are tested by quality inspection section, will be through disqualified upon inspection
Main material and adjuvant product treatment fall, and by through checking qualified main material and adjuvant product to carry out dispensing.
S2, dispensing：Dispensing is carried out weighing by prescription-filling card and prepares, should clear up to weighing utensil before weighing, verification, remove knot
Block, make moist and the material containing impurity, pinpoint the problems timely process, material weighing individually should be weighed successively by prescription-filling card order,
Each independent material is mixed with filler with lubricant, reinforcing agent, pigment by stabilizer after weighing puts into Plastic Drum or plastic bag
Interior, accurate for further ensuring that batch weighing, the material after formula is carried out multiple title, control accuracy is prescription-filling card quantity
In the range of 0.05kg.
S3, at a high speed kneading：By prescription-filling card quantity, resin is poured into bin stock car, before downtree fat, should be by the impurity outside package resin bag
Etc. removing, then low speed opens machine, by conveying worm, resin is all added in high-speed kneader, and then adds
Machine at high speeds operating opened by stabilizer and lubricant, to material temperature show 90 ± 5 DEG C when, addition reinforcing agent, pigment and filler, when
When material temperature shows 115 ± 5 DEG C, open machine Dump gate, material is discharged in cooling and stirring machine.
S4, cooling and stirring：Before high-speed kneader discharging, open cooling and stirring machine, material drops in cooling and stirring built-in temperature
Less than 40 ± 10 DEG C, material is discharged into the bin stock car under cooling and stirring machine, can lower the temperature rapidly for guarantee material, cooling and stirring machine enters
Water pressure is transferred to more than 0.4Mpa, and the material after cooled stirring is in loose shape, uniform color, no yellowing phenomenon.
S5, feed：By auger conveyor, the in-car material of bin stock is delivered to the position of each extruder material.
S6, plasticizing and extrusion：
(1) heat up：Each machine barrel and die head temperature are warming up to 140 DEG C, are incubated 1 hour, then are warming up to setting value by technological requirement.
(2) screw rod：Because screw rod programming rate is very fast, therefore the barrel heating-up time can be later than during operation, during intensification, the first step first will
Temperature is adjusted to 60 DEG C, and is at least incubated 20 minutes, and second step every 10 is heated with 10 DEG C for one-level, respectively until being heated to work
Skill requires temperature.
(3) power-on operation：After each section of temperature has uniformly reached technique productions temperature, and after being incubated at least 30 minutes, start into
Enter the production that feeds intake, start main frame, so that main-machine screw is operated under the slow-speed of revolution (5 revs/min about), feed motor of then opening an account, will
Material notices that screw speed is matched with charging rate, feeding amount can not be excessive from slow to being added in screw rod, nor not
Foot, after die head discharging, ramps up screw rod with charging rate to processing parameter, when charging rate is mated with screw speed
After proper, synchronize speed governing, after extruded product is normal, starts main frame vacuum pump, aerofluxuss are proceeded by material, normal production
Afterwards, start to observe the change of temperature and screw speed, moment of torsion, melt pressure parameter etc. on extruder, and every two hours make once
Technique record.
(4) shut down：After normal production terminates, close vacuum exhaust pump, close charging motor, reduce screw speed to 5 revs/min of left sides
The right side, each machine barrel and die head temperature are down to 140 DEG C, close screw rod heating system.Feed way is slowly from addition cleaning by hand
Material, and the charging rate cleaning material can not be too fast, in order to avoid material screw rod over loading from vacuum port overflow, treats that die head extrusion is clear
After washing material, stop charging, stop screw rod and rotate, close each section of temperature, cut off host power supply.
S7, cooling vacuum sizing：
(1) preparation：It is more than 0.4Mpa in pressure of supply water, water temperature, when 10-25 DEG C, is produced, true during start for ensureing
The moisturizing ball valve of each vacuum pump is first opened before start by empty pump energy normal work；Check shaping box so as to sufficiently sealed, for protecting
Card cool water shower normal work, checks the spray unimpeded situation of faucet, loads onto shaping cover, make shaping cover and mould in qualitative case
Head extrusion direction is in line.
(2) operate：Initial shaping can be started after extruded material ideal, can start after reaching drawing length to lead after electric power length of tube
Draw, first start cooling water pump, then open vacuum pump, make power pipe vac sorb and cooling water effect under with shaping cover be in
It is in close contact and cooling and shaping, start to observe the water level of water tank in running, water level height is by two tunnel water outlets to valve
Control, by water lev el control in vacuum pump exhaust port with next segment distance, in running, water tank vacuum is more than 0.02Mpa,
And make power pipe keep enough circularity.
(3) shut down：Cut off the water supply during shutdown, power supply, left a certain amount of water in water tank, so as next time drive, if will stop
The machine a few days, then should drain in vacuum pump remain water, and in water supplement port inject saponification liquor, with antirust lead to restart when rotor sting
Extremely.
S8, traction：
(1) preparation：Check whether each crawler belt is parallel, such as find not parallel, should adjust in time, check upper two crawler belt length fall
Whether steadily, if undesirable, check whether gas circuit is normal, whether gas leakage on joint, must be with cutting machine above lower crawler belt
Work top forms same plane, also will adjust Work bench of cutting machine height if necessary.
(2) operate：After material to be extruded is normal, drawn with copper core electric wire, extrusion electric power tubing is drawn on traction machine, electricity
Solenoid should ensure that balance moves ahead between each crawler belt, changes electric power thickness of pipe wall extremely by adjusting hauling speed and die head set screw
Critical field, adjusts traction pressure, makes power pipe non-slip, do not flatten so as to reach regulation dacron overall dimensions.
S9, cutting：
(1) preparation：Carry out no-load running, check whether each action of cutting machine is normal.
(2) operate：After normal production, fixed length cutting is carried out to power pipe, otch should be vertical and smooth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610799139.6A CN106393644A (en) | 2016-08-31 | 2016-08-31 | Production technology of PVC-C sleeve for protecting buried type high-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610799139.6A CN106393644A (en) | 2016-08-31 | 2016-08-31 | Production technology of PVC-C sleeve for protecting buried type high-voltage power cable |
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| CN201610799139.6A Pending CN106393644A (en) | 2016-08-31 | 2016-08-31 | Production technology of PVC-C sleeve for protecting buried type high-voltage power cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941889A (en) * | 2020-07-23 | 2020-11-17 | 浙江振飞塑业有限公司 | Manufacturing method of high-strength aging-resistant cable protection pipe |
| CN112895383A (en) * | 2021-02-05 | 2021-06-04 | 河北鹏博通信设备有限公司 | Grating pipe processing technology |
| CN114621585A (en) * | 2020-12-11 | 2022-06-14 | 湖南登科材料科技有限公司 | Low-cost PA66 halogen-free flame-retardant plastic and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344194A (en) * | 2008-08-18 | 2009-01-14 | 江苏常盛管业有限公司 | Production technology of modified polyvinyl chloride pipes |
| CN103937135A (en) * | 2014-04-29 | 2014-07-23 | 富阳科威钢业有限公司 | Outdoor compound enhanced ethylene chloride HFCM pipe and preparation method thereof |
| CN105014902A (en) * | 2015-07-06 | 2015-11-04 | 江苏圣通环境工程有限公司 | Production method for chlorinated polyvinyl chloride pipe materials |
| CN105385059A (en) * | 2015-11-04 | 2016-03-09 | 安徽瑞丰管业有限公司 | Polyvinyl chloride tubular product and preparation method thereof |
-
2016
- 2016-08-31 CN CN201610799139.6A patent/CN106393644A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344194A (en) * | 2008-08-18 | 2009-01-14 | 江苏常盛管业有限公司 | Production technology of modified polyvinyl chloride pipes |
| CN103937135A (en) * | 2014-04-29 | 2014-07-23 | 富阳科威钢业有限公司 | Outdoor compound enhanced ethylene chloride HFCM pipe and preparation method thereof |
| CN105014902A (en) * | 2015-07-06 | 2015-11-04 | 江苏圣通环境工程有限公司 | Production method for chlorinated polyvinyl chloride pipe materials |
| CN105385059A (en) * | 2015-11-04 | 2016-03-09 | 安徽瑞丰管业有限公司 | Polyvinyl chloride tubular product and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘西文: "《塑料挤出工[中、高级]培训教程》", 31 January 2013, 印刷工业出版社 * |
| 周殿明: "《塑料成型技术》", 31 October 2014, 机械工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941889A (en) * | 2020-07-23 | 2020-11-17 | 浙江振飞塑业有限公司 | Manufacturing method of high-strength aging-resistant cable protection pipe |
| CN114621585A (en) * | 2020-12-11 | 2022-06-14 | 湖南登科材料科技有限公司 | Low-cost PA66 halogen-free flame-retardant plastic and preparation method thereof |
| CN112895383A (en) * | 2021-02-05 | 2021-06-04 | 河北鹏博通信设备有限公司 | Grating pipe processing technology |
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Application publication date: 20170215 |