CN208576168U - A kind of extrusion equipment of thermoplastic - Google Patents
A kind of extrusion equipment of thermoplastic Download PDFInfo
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- CN208576168U CN208576168U CN201820493071.3U CN201820493071U CN208576168U CN 208576168 U CN208576168 U CN 208576168U CN 201820493071 U CN201820493071 U CN 201820493071U CN 208576168 U CN208576168 U CN 208576168U
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- screw rod
- machine barrel
- extrusion
- reduction gearbox
- thermoplastic
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- 238000001125 extrusion Methods 0.000 title claims abstract description 82
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- 230000005540 biological transmission Effects 0.000 claims abstract description 37
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 10
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- 238000007789 sealing Methods 0.000 claims description 19
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
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- 230000001050 lubricating effect Effects 0.000 claims description 8
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 238000006396 nitration reaction Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005304 joining Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 2
- 241001661918 Bartonia Species 0.000 claims 1
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Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of extrusion equipment of thermoplastic, including be used to support workbench, for providing the transmission mechanism of rotary driving force, the extrusion body for squeezing out thermoplastic to extrusion body, being used to control the temperature control mechanism of temperature in extrusion body and being used to control the controller of entire extrusion process, transmission mechanism, extrusion body are fixedly mounted on the table, the upstream of extrusion body is arranged in transmission mechanism, and the power output end of transmission mechanism and the power intake of extrusion body are affixed；The control terminal of the control terminal of transmission mechanism, the control terminal of extrusion body and controller is electrically connected.The beneficial effects of the utility model are: velocity variations can be accurately controlled, guarantee stable transmission, therefore the plastic quality of extrusion molding is guaranteed, the efficiency of complete machine is greatly improved, and realize automation control, avoid risk existing for manually-operated error and manual operation.
Description
Technical field
The utility model relates to a kind of extrusion equipments of thermoplastic.
Background technique
By the research processed to polymer material molding, building up the business for human industry has immeasurable help
And promotion.High molecular material is in worldwide extensive use and its brought use value, no matter for which angle
It is all a huge and irreplaceable wealth for the mankind.After earliest single screw extrusion machine appearance, up to now,
The type of polymer (high molecular material) that can be used to process be increasing, at the same time, the structure of finished product, form also with
Increase.And extrusion molding is as one of most important one technique, corresponding equipment, even research and development new product,
The means of new process have naturally also obtained comprehensive development.
But traditional extruder is when squeezing high molecular material, since Polymer Physics is easy to be unable to get guarantee, holds
Destructible high molecular material self structure, the problem of influencing plastic quality.
Summary of the invention
In response to the above problems, the present invention proposes the machine-shapings that a kind of high molecular material refers mainly to plastics, rely on
The frictional force of material and machine barrel complete material in conveying wherein, not only efficiently and be able to achieve automation, ensure that plastics at
The extrusion equipment of the thermoplastic of the quality and yield of type.
The extrusion equipment of a kind of thermoplastic described in the utility model, it is characterised in that: including being used to support
Workbench, for extrusion body provide rotary driving force transmission mechanism, for thermoplastic to be squeezed out
Extrusion body, for controlling in extrusion body the temperature control mechanism of temperature and for controlling entire extrusion process
Controller, the transmission mechanism, extrusion body are fixedly mounted on the table, wherein the transmission mechanism is arranged in extrusion forming
The upstream of mechanism, and the power output end of transmission mechanism and the power intake of extrusion body are affixed；The driver
The control terminal of the control terminal of structure, the control terminal of the extrusion body and the controller is electrically connected；
The transmission mechanism includes motor, reduction gearbox and shaft coupling, and the motor, reduction gearbox are fixedly mounted on the table, institute
The motor shaft for stating motor is electrically connected by the power intake of shaft coupling and reduction gearbox, the output end and extrusion forming of the reduction gearbox
The power intake of mechanism is affixed；The extrusion body includes machine barrel, screw rod and feeding device, and the machine barrel both ends are spacious
Mouthful, upstream end and Gearbox sealing are affixed, and downstream passes through head and seals；The side wall of the machine barrel, which has, is located at upstream
Feed inlet and mouth mold positioned at downstream export, the charging dress that material can be introduced to its inner cavity is equipped at the feed inlet of the machine barrel
It sets, and in the switching door of equipped its opening and closing of control of the discharge outlet of feeding device；Defining upstream is extrusion body charging
One end, downstream are one end of extrusion body discharging；
The screw rod is axially fitted to machine barrel inner cavity, and rotationally connected, and screw rod is under transmission mechanism driving in screw rod
Mandrel rotation；The outer wall of screw rod is circumferentially with along it for transporting the material in machine barrel from upstream to the helical tooth in downstream, and
There are the gaps passed through for material between the helical tooth and machine tube inner wall of screw rod, can make material after feeding device introducing by machine
It exports and squeezes out from its mouth mold after cylinder；
The screw rod is axially successively divided into feeding section, melt zone and homogenizing zone along it, wherein be located at the feeding section of upstream
End is affixed as the power intake of extrusion body and the output end of reduction gearbox；Homogenizing zone and head positioned at downstream
Inner end sealing rotation connection；Homogenizing zone nestles up outlet of extruder, for uniform substance to be discharged；
The temperature control mechanism includes the cooling device for cooling down to feeding section and the heating dress for heating to melt zone
It sets, the cooling device is mounted on the corresponding machine barrel outer wall of feeding section, cools down for the material to feeding section；The heating
Device is mounted on the corresponding machine barrel outer wall of melt zone, heats for the material to melt zone；
The controller include for controlling the feed control unit of hopper feed, the temperature for controlling machine barrel inner cavity temperature
Control unit and the motion control unit for controlling material extruded velocity, the signal output end of the motion control unit and institute
The control terminal for stating motor is electrically connected；The signal output end of the temperature conditioning unit respectively with the control terminal of the cooling device, it is described plus
The control terminal of thermal is electrically connected；The control terminal of the feed control unit and the control terminal of the switching door are electrically connected, for controlling
The opening and closing of switching door.
The reduction gearbox is secondary speed reduction box, including cabinet, high speed shaft, high speed grade gear, jackshaft, jackshaft canine tooth
Wheel, jackshaft pinion gear and slow speed turbine stage gear wheel, the cabinet are fixedly mounted on the table by reducer pedestal, the high speed
The equal level of axis, jackshaft is erected in cabinet, and high speed shaft is rotatablely connected with cabinet, jackshaft and cabinet；The high speed
One end of axis is connected by shaft coupling with the output shaft of the motor as the power intake of reduction gearbox；The high speed grade gear
It is keyed with the high speed shaft；The jackshaft gear wheel, jackshaft pinion gear connect with the intermediate axle key for being inserted heart hole
It connects, wherein jackshaft gear wheel is engaged with high speed grade gear, is formed the first order and is slowed down；The slow speed turbine stage gear wheel and insertion cabinet
Interior screw rod key connection, and slow speed turbine stage gear wheel is engaged with jackshaft pinion gear, is formed the second level and is slowed down.
The top of the reduction gearbox is equipped with bearing chamber and lubricating cup, and screw rod feeding section one end is indoor in bearing by being arranged
Rolling bearing and the sealing of cylinder roller bearing and reduction gearbox are rotatablely connected, and the axial and circumferential for limiting screw rod are mobile；Bearing
Room is connected to lubricating cup, for adding lubricating oil into bearing chamber；Equipped with for placing profit between the screw rod and bearing chamber interior walls
The felt collar oil sealing of lubrication leakage.
The helical tooth section of the screw rod is rectangle.
The working surface of the screw rod has one layer of nitration case, and wherein the thickness of nitration case is more than or equal to 0.4mm, outside screw rod
Circle nitridation hardness is more than or equal to 840HV, and brittleness is less than or equal to 2 grades.
The feeding device includes feeder and hopper, and the discharge port of the feeder is connected to the feed inlet of hopper, material
Bucket is packed on the charging seat of machine barrel upstream, and the discharge port of hopper is connected to the inner cavity of machine barrel, and the discharge outlet of hopper is matched
Fill the switching door for controlling its opening and closing.
The heating device includes the heating coil being wrapped on machine barrel and corresponds to the temperature of barrel temperature for detecting melt zone
Sensor is spent, the signal output end of the temperature sensor and the signal input part of temperature conditioning unit are electrically connected, the energization end of heating coil
Pin corresponding with the temperature conditioning unit is electrically connected.
The cooling device includes several cooling tubes, and the corresponding machine barrel of screw rod feeding section is circumferentially arranged more cooling tubes,
And every cooling tube is axially arranged along machine barrel, and interconnects to form cooling pipe network between cooling tube, wherein two coolings
Pipe is in communication with the outside to form coolant liquid inlet and outlet respectively.
The cabinet of reduction gearbox is put together by upper box and lower box, and the two is solid by outer bolt and the first nut seal
It connects, and opens case screw and fixed pin in the setting of the two joining place convenient for what is unpacked, the upstream end of machine barrel passes through internal-flange bolt, second
The box sealing of nut and reduction gearbox is affixed, and the interior slow speed turbine stage gear wheel in it of feeding section one end of screw rod insertion bearing chamber
It is affixed；The bottom of lower box is equipped with the oil outlet for being inserted into the mounting hole of scale and for draining the oil, and the measurement end of scale is close
In envelope insertion mounting hole, for observing the Fuel Oil Remaining in reduction gearbox；Oil outlet is sealed by oil sealing pad and plug screw.
In use, electric motor driven screw, guarantees that (such as pressure, temperature and revolving speed) obtains under the technique requirement that screw rod can give
It takes torque required for producing while keeping the uniformity of rotation, the conveying and plasticizing to material are completed with this；Motor, on the one hand
It is to be able to achieve stepless time adjustment, is on the other hand exactly to need to have to have certain rotational speed regulation range.Stepless time adjustment can control crowded
Mass, while can guarantee the consistency of it and subsidiary engine cooperation again；And that it can then met is various types of for certain speed adjustable range
The processing that type requires.Reduction gearbox can adjust rate of extrusion according to different process requirements, and guarantee in production process
Stable drive.Therefore, corresponding speed adjusting gear is needed in transmission system；Further, since the screw rod in extrusion molding mechanism turns
Speed wants much slower compared to motor speed, so, deceleration mechanism is also essential.It, can be according to motor when selecting reduction gearbox
Power and screw speed are chosen.It is required that reduction gearbox has high-precision Hardened gear face, it is typically chosen the special retarding of screw extruder
Case series.Its gear and axial workpiece use high strength alloy steel.Gear is processed through carburizing, quenching, gear-grinding process.It is this to subtract
Fast case is mounted with the thrust bearing of ultra-specification in hollow output shaft front end portion, so screw rod generates when being able to bear normal work
Axial force.Complete machine has the features such as small in size, bearing capacity height, stable drive, low, high-efficient noise.In an extruder
In reduction gear, deep groove ball bearing is usually selected.It is to be adapted to biggish revolving speed, lubrication side using the advantages of bearing
Just, and certain bi-directional axial load can be born.And for the transmission shaft of studdle rotation, then use tapered roller bearing
Or thrust ball bearing.Its advantages are subject to biggish unidirectional axial load, and can limit the unidirectional axial displacement of transmission shaft.
The effect of extrusion molding mechanism is crushing, softening, melting, plasticizing, exhaust and the compacting realized to plastics, and downwards
The formation system continuous uniform conveying sizing material of trip completes Solid Conveying and Melting, melting and the melt conveying of material.In extrusion equipment
When work, material starts displacement and kneading under machine barrel and screw rod collective effect, due to being under pressure.
The screw rod processability of extrusion molding mechanism is good namely cutting ability is good and polishing performance is good.The former be for
The processing of reduction screw rod is time-consuming, and the latter then can be enhanced screw surface finish；Excellent heat-treatability is primarily referred to as becoming here
Shape is small, this is the necessary condition that guarantees screw rod and can work normally；Wearability and corrosion resistance are good, to guarantee the screw rod service life
Basic demand；With enough core strengths；Good adhesion；Good economy performance, it is at low cost.Screw rod working surface should carry out nitrogen
Change processing, nitride layer depth are not less than 0.4mm；Screw rod outer circle nitrogenizes hardness and is not less than 840HV；Brittleness is not more than 2 grades of common spiral shells
Bar can be divided into three sections, respectively feeding section, melt zone, homogenizing zone.
Machine barrel needs to conduct heat, and uniform, stability is good.The working performance of entire extrusion formation equipment all with the structure shape of machine barrel
Formula is inseparable.Therefore, machine barrel is one of important component of extruder.The screw rod of the utility model extrusion formation equipment is straight
Diameter is 45mm, and specification is smaller, therefore uses monoblock type machine barrel.Body formula structure is most widely used structure in extruder, especially
It is usually all to use monolithic construction machine barrel when extruder specification is less big.The advantage of this structure is adding in design assembly
It is particularly convenient when heat, cooling device, meanwhile, it is easy to control temperature, but machine barrel is required to have higher machining accuracy.Machine barrel material
It is mainly characterized by: there is high-wearing feature, high-fatigue strength and sizable intensity.Machine barrel bore area carries out nitrogen treatment,
Nitride layer depth is not less than 0.4mm；Machine barrel working surface nitrogenizes hardness and is not less than 940HV；Brittleness is not more than 2 grades.Due to squeezing
Abrasion, therefore, screw rod and machine after long usage are inevitably generated in press forming device normal productive process
The gap of cylinder can become larger, and gap becomes larger can seriously hinder the production of extruder.So when extruder is longer using the time
And when having already appeared larger gap between screw rod and machine barrel, it is necessary to which replacement or maintenance screw rod are to ensure that it is still able to satisfy production
Demand.When the gap to screw rod and machine barrel is designed, if gap value is excessive, although easily manufactured, this can reduce crowded
The production capacity of machine out；If value is too small, then it can make being difficult to manufacture and assembling for extruder, while also resulting in extruder
Power consumption greatly increases.It is 0.2mm that the utility model, which chooses screw rod and the diametric clearance of machine barrel,.Pass of the machine barrel as extruder
The size of one of key component part, its wall thickness directly affects the working performance of extruder, so the selection of wall thickness is relatively attached most importance to
It wants.It when selecting wall thickness, usually chooses by rule of thumb, the utility model is 20~25mm, first has to guarantee that machine barrel meets intensity
It is required that just can ensure that the kneading and plasticizing of sizing material in this way, meanwhile, also to fully consider its demand cooling to heating.
The effect of its device of the control of extrusion molding apparatus is to guarantee the efficiency and quality of extruder work, charging control unit
It is steadily to provide material to extruder.It is generally by hopper and feeding unit at it is laggard that material successively passes through feeder, hopper
Enter machine barrel, hopper is typically mounted on the charging seat of machine barrel upstream.Hopper is usually all that symmetrically, common are cone, square
Shape and square etc..Feed hopper bottom has a switching door, and stopping is reached by controlling the opening amount of switching door and adjusts charging
The purpose of amount.Lid is installed above hopper, the entrance of fugitive dust and impurity can be kept away.
Motion control unit is the gel quantity and extruded velocity in order to guarantee complete machine.Normal production is total to be wished to realize as far as possible
Maximum speed and realization high yield, when requiring screw speed from starting required working speed to extruding machine, available speed regulation
Range is big.And to the stability requirement of revolving speed height, because the fluctuation of revolving speed will lead to the fluctuation of extrusion output, influence to squeeze out matter
Amount, so will result in the variation of outer diameter of cable in the case where traction linear velocity does not have situation of change.Similarly such as traction device linear speed wave
The dynamic variation that will also result in outer diameter of cable greatly, screw rod and traction linear velocity can be reflected by corresponding instrument on station, be squeezed
Close observation is answered when out, it is ensured that good quality and high output.
Temperature conditioning unit is to give material most suitable melting temperature.It, can thermometric by platinum resistance sensor
Spend range -200 to 650 degree, for the surface of solids, bearing, the pipelines thermometric such as power station pipeline, sensor is external.Pass through sensor
Temperature according to material in different phase adjusts heating coil, to achieve the purpose that control temperature of charge.
The beneficial effects of the utility model are: according to different types of thermoplastic, give corresponding transmission speed and
Melting temperature, and velocity variations can be accurately controlled, guarantee stable transmission, therefore the plastic quality of extrusion molding is protected
Card, the efficiency of complete machine is greatly improved, and realizes automation control, avoids manually-operated error, Yi Jiren
Work operates existing risk.
Detailed description of the invention
Fig. 1: being single screw extrusion machine assembly total figure；
Fig. 2: being single screw extrusion machine right view；
Fig. 3: being extruder transmission system total figure；
Fig. 4: being extruder extrusion system total figure；
Fig. 5: being thread profile figure；
Fig. 6: being reduction gearbox and extrusion system junction structure chart.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawing.
Referring to attached drawing:
A kind of extrusion equipment of thermoplastic described in the utility model of embodiment 1, including the work being used to support
Make platform 3, the transmission mechanism 1 for providing rotary driving force to extrusion body, for squeeze out thermoplastic
Extrusion body 2, the temperature control mechanism 4 for controlling temperature in extrusion body and for controlling entire extrusion process
Controller, the transmission mechanism 1, extrusion body 2 are packed on workbench 3, wherein the setting of the transmission mechanism 1 is squeezing
The upstream of shaping mechanism 2, and the power output end of transmission mechanism 1 and the power intake of extrusion body 2 are affixed；It is described
The control terminal of the control terminal of transmission mechanism 1, the control terminal of the extrusion body 2 and the controller is electrically connected；
The transmission mechanism 1 includes motor 11, reduction gearbox 12 and shaft coupling 13, and the motor 11, reduction gearbox 12 lead to respectively
It crosses respective bolt to be packed on the corresponding motor cabinet of workbench 1 and deceleration block, the motor shaft of the motor 11 passes through shaft coupling
13 are electrically connected with the power intake of reduction gearbox 12, the output end of the reduction gearbox 12 and the power intake of extrusion body 2
It is affixed；
The extrusion body 2 includes machine barrel 21, screw rod 22 and feeding device 23, the circle of 21 open at both ends of machine barrel
Barrel structure, upstream end A and 12 box sealing of reduction gearbox are affixed, downstream B by bolt sealed with head 24 it is affixed so that machine
The seal chamber that can accommodate material is formed in cylinder；The side wall of the machine barrel 21 has positioned at the feed inlet 211 of upstream and positioned at downstream
Mouth mold outlet 212, be equipped with the feeding device 23 that material can be introduced to its inner cavity at the feed inlet 211 of the machine barrel 21, and
The switching door 231 of equipped its opening and closing of control of the discharge outlet of feeding device 23；Define one that upstream is extrusion body charging
End, downstream are one end of extrusion body discharging；
The screw rod 22 is axially fitted to 21 inner cavity of machine barrel, and rotationally connected, screw rod 22 transmission mechanism 1 driving under around
22 central axis rotation of screw rod；The outer wall of screw rod 22 is circumferentially with along it for transporting the material in machine barrel from upstream to downstream
Helical tooth 221, and there are the gap passed through for material between 21 inner wall of the helical tooth 221 of screw rod 22 and machine barrel, can make material from
Feeding device 23 squeezes out after machine barrel 21 from its mouth mold outlet 212 after introducing；
The screw rod 22 is axially successively divided into feeding section 222, melt zone 223 and homogenizing zone 224 along it, wherein being located at upstream
Feeding section end it is affixed as the output end of the power intake and reduction gearbox 12 of extrusion body；Positioned at downstream
Homogenizing zone 224 and the sealing of 24 inner end of head are rotatablely connected；Homogenizing zone nestles up outlet of extruder, for uniform substance to be discharged；
The thickness of plastics is consistent with final molding herein, can calculate the amount of plastics by the determination in gap and revolving speed；But main function
Still make plastics uniform；
The temperature control mechanism 4 includes the cooling device 41 for cooling down to feeding section and the heating for heating to melt zone
Device 42, the cooling device 41 are mounted on the corresponding machine barrel outer wall of feeding section, cool down for the material to feeding section；Institute
It states heating device 42 and is mounted on the corresponding machine barrel outer wall of melt zone, heated for the material to melt zone；
The controller include for controlling the feed control unit of hopper feed, the temperature for controlling machine barrel inner cavity temperature
Control unit and the motion control unit for controlling material extruded velocity, the signal output end of the motion control unit and institute
The control terminal for stating motor is electrically connected；The signal output end of the temperature conditioning unit respectively with the control terminal of the cooling device, it is described plus
The control terminal of thermal is electrically connected；The control terminal of the feed control unit and the control terminal of the switching door are electrically connected, for controlling
The opening and closing of switching door.
The reduction gearbox 12 is secondary speed reduction box, including cabinet 121, high speed shaft 122, high speed grade gear 123, jackshaft
124, jackshaft gear wheel 125, jackshaft pinion gear 126 and slow speed turbine stage gear wheel 127, the cabinet 121 pass through speed reducer
Seat is packed on workbench 3, and the high speed shaft 122, the equal level of jackshaft 124 are erected in cabinet 121, and high speed shaft 122
It is rotatablely connected with cabinet 121, jackshaft 124 and cabinet 121；Power of the one end of the high speed shaft 122 as reduction gearbox 12
Input terminal is connected by shaft coupling 13 with the output shaft of the motor 11；The high speed grade gear 123 and 122 key of high speed shaft
Connection；The jackshaft gear wheel 125, jackshaft pinion gear 126 are keyed with the jackshaft 124 for being inserted heart hole, real
Show the synchronous rotation of jackshaft gear wheel 125, jackshaft pinion gear 126, wherein jackshaft gear wheel 125 and high speed grade gear
123 engagements form the first order and slow down；The slow speed turbine stage gear wheel 127 is keyed with the intracorporal screw rod 22 of insertion case, and slow speed turbine stage
Gear wheel 127 is engaged with jackshaft pinion gear 126, is formed the second level and is slowed down.
The top of the reduction gearbox 12 is equipped with bearing chamber 128 and lubricating cup 129, and 22 feeding section of screw rod, 222 one end is by setting
Pairs of rolling bearing 1281 and cylinder roller bearing 1282 and reduction gearbox 12 sealing set in bearing chamber 128 are rotatablely connected,
Axial and circumferential for limiting screw rod 22 are mobile；Bearing chamber 128 is connected to lubricating cup 129, for adding profit into bearing chamber 128
Lubricating oil；Equipped with the felt collar oil sealing 1283 for placing oil leak between 128 inner wall of the screw rod 22 and bearing chamber.
The helical tooth section of the screw rod 22 is rectangle.
The working surface of the screw rod 22 has one layer of nitration case, and wherein the thickness of nitration case is more than or equal to 0.4mm, screw rod
Outer circle nitrogenizes hardness and is more than or equal to 840HV, and brittleness is less than or equal to 2 grades.
The feeding device 23 includes feeder and hopper, and the discharge port of the feeder is connected to the feed inlet of hopper,
Hopper is packed on the charging seat of machine barrel upstream, and the discharge port of hopper is connected to the inner cavity of machine barrel, and the discharge outlet of hopper
It is equipped with the switching door 231 for controlling its opening and closing.
The heating device 42 includes the heating coil being wrapped on machine barrel and corresponds to barrel temperature for detecting melt zone
Temperature sensor, the signal output end of the temperature sensor and the signal input part of temperature conditioning unit are electrically connected, the energization of heating coil
Pin corresponding with the temperature conditioning unit is held to be electrically connected.
The cooling device 41 includes several cooling tubes, and the corresponding machine barrel of screw rod feeding section is circumferentially arranged more coolings
Pipe, and every cooling tube is axially arranged along machine barrel, and interconnects to form cooling pipe network between cooling tube, wherein two are cold
But pipe is in communication with the outside to form coolant liquid inlet and outlet (411,412) respectively.
The cabinet 121 of reduction gearbox 12 is put together by upper box and lower box, and the two passes through outer bolt 1211 and first
Nut 1212 seal it is affixed, and the two joining place setting convenient for unpack open case screw and fixed pin, the upstream end of machine barrel 21
Box sealing by internal-flange bolt 1213, the second nut 1214 and reduction gearbox is affixed, and feeding section one end of screw rod 22 is inserted into
It is affixed with the slow speed turbine stage gear wheel in it in bearing chamber；The bottom of lower box is equipped with mounting hole and use for being inserted into scale 5
In in the oil outlet drained the oil, the measurement end sealing insertion mounting hole of scale 5；Oil outlet is sealed by oil sealing pad 1215 and plug screw.
Specifically, such as Fig. 2, the motor in the transmission mechanism is threephase asynchronous, motor by motor cabinet and
Bolt cooperation is fixed on the table.The high speed shaft of motor shaft and reduction gearbox is fixed by shaft coupling.Reduction gearbox is solid by bolt
Determine on the table.In reduction gearbox, each axis is completed radially fixed by axle sleeve and bearing.Bearing uses the thrust axis of ultra-specification
It holds, biggish axial force when reduction gearbox work can be born.Axis gear is cooperated by round end flat key and axis, is completed radially and circumferentially
Fixation.It is meshed between each gear by the gear teeth.It is lubricated by way of lubrication of splashing inside reduction gearbox, passes through oil baffle disc
It prevents internal lubrication oil from revealing, and is fixed with bearing (ball) cover.A certain amount of lubricating oil can be added by lubricating cup.The type of cooling
Natural cooling is taken, reduction gearbox top design has breather plug, it is ensured that the gas pressure intensity inside and outside reduction gearbox.Entire transmission mechanism is complete
At the transmission and deceleration of power, achieve the purpose that stable operation.Firstly, power is passed through power by threephase asynchronous machine
Shaft coupling passes to high speed shaft, and the gear fixed on high speed shaft is engaged with jackshaft gear wheel, completes the first transmission of power.So
Power is passed to by jackshaft pinion gear by jackshaft afterwards, since there are one for the number of teeth of jackshaft gear wheel and jackshaft pinion gear
A proportionate relationship realizes first slow down so speed can generate slowing down for corresponding relationship.By in jackshaft pinion gear and screw rod
Gear engagement, to drive gear movement.Similarly, there are a proportionate relationship, roots for jackshaft pinion gear and the number of teeth of gear
According to power calculation, resultant gear ratio 24, so speed is also in the deceleration of corresponding relationship.Slow speed turbine stage gear and screw rod are connected by key
It connects, so far, by the power of threephase asynchronous, with a proportionate relationship deceleration transmission to screw rod.
Such as Fig. 3, the thread profile shape on the screw rod of extrusion body is rectangle, as shown in figure 4, rectangular cross section charges
Volume is larger, and transmission efficiency is high.Head is bolted with machine barrel, and placement gasket in centre guarantees the reliability of connection.Heating
Circle is fixed by screws in outside the corresponding machine barrel of screw rod melt zone, guarantees the accuracy of melt zone heating.Feeding section is cooling
Water is arranged in the corresponding inside machine barrel of screw rod feeding section, in order to guarantee that plastics enter the initial temperature of melt zone, make to mould
Material is arranged in the temperature range that technique requires.Specifically in order to exclude screw rod rotation shearing friction generate it is extra
Heat keeps plastics, incipient scorch or sizing difficult to avoid temperature is excessively high.Feed bin is fixed by screws on machine barrel.Screw rod
It is fixed to be realized by two bearings, it is clearance fit with machine barrel, guarantees the extrusion quality and efficiency of plastics.Entire extrusion system is complete
At the charging of plastics, the processes such as melting and extrusion molding.Firstly, plastic raw materials are stored in bunker, pass through control switching door
Folding amount guarantees the output of plastics.After raw material enters machine barrel, due to rotating the entrainment and push effect of screw rod, plastics are because squeezing
It presses and becomes bulk, and the threadingly dynamic advance of trough roller, pulled in solid conveying section for friction.Plastics are drawn to the melting of screw rod
Duan Hou, by heating coil stablize heat up, the shearing, compression of screw rod and the effect of stirring in addition so that plastics by into
The mixing and plasticizing of one step, temperature and pressure are stepped up, and are gradually showed viscous state, are dragged in melt conveying zone for stickiness
It drags.Finally, plastics can be extruded closely at head, and with certain pressure and temperature continually by the shape of the mouth as one speaks (mouth
Mould), to obtain the required semi-products with specific shape.
As shown in figure 5, the magnified partial view felt collar oil sealing between extrusion body and transmission mechanism guarantees in reduction gearbox
Lubricating oil will not enter and squeeze workspace, prevent pollution raw material and environment, also can effectively avoid the intrusion such as introduced contaminants, dust
Bearing chamber.Screw rod limits its axial displacement by tapered roller bearing again, and main function is subject to the diameter based on radial load
To with axial connected load.It is arranged between lubricating cup, convenient for the addition of lubricating oil.Rolling bearing uses in pairs, guarantees that screw rod turns
Dynamic stationarity.Fixation is bolted in two systems, guarantees the continuity of overall flow.
As shown in fig. 6, the right view internal-flange bolt of extrusion equipment, the second nut and second spring gasket can guarantee
The leakproofness of machine barrel shaft end and cabinet, and outer bolt, the first nut and the first spring shim guarantee the airtightness of cabinet.Mark
Ruler, plug screw, oil sealing pad prevent the leakage of internal lubrication oil.
Content described in this specification embodiment is only an enumeration of the implementation forms of the utility model concept, this is practical new
The protection scope of type should not be construed as being limited to the specific forms stated in the embodiments, and the protection scope of the utility model is also wrapped
Include those skilled in the art according to the utility model design it is conceivable that equivalent technologies mean.
Claims (9)
1. a kind of extrusion equipment of thermoplastic, it is characterised in that: including be used to support workbench, for extruding
Shaping mechanism provides the transmission mechanism of rotary driving force, the extrusion body for squeezing out thermoplastic, is used for
Control the temperature control mechanism of temperature and the controller for controlling entire extrusion process, the driver in extrusion body
Structure, extrusion body are fixedly mounted on the table, wherein the upstream of extrusion body is arranged in the transmission mechanism, and are passed
The power output end of motivation structure and the power intake of extrusion body are affixed；The control terminal of the transmission mechanism, it is described squeeze
The control terminal of molded mechanism and the control terminal of the controller are electrically connected；
The transmission mechanism includes motor, reduction gearbox and shaft coupling, and the motor, reduction gearbox are fixedly mounted on the table, the electricity
The motor shaft of machine is electrically connected by the power intake of shaft coupling and reduction gearbox, the output end and extrusion body of the reduction gearbox
Power intake it is affixed；
The extrusion body includes machine barrel, screw rod and feeding device, the machine barrel open at both ends, upstream end and reduction gearbox
Box sealing is affixed, and downstream is sealed by head；The side wall of the machine barrel has positioned at the feed inlet of upstream and positioned at downstream
Mouth mold outlet, the feeding device that material can be introduced to its inner cavity is equipped at the feed inlet of the machine barrel, and in feeding device
The switching door of equipped its opening and closing of control of discharge outlet；One end that upstream is extrusion body charging is defined, downstream is to be squeezed into
One end of type mechanism discharging；
The screw rod is axially fitted to machine barrel inner cavity, and rotationally connected, and screw rod is under transmission mechanism driving around screw stem
Rotation；The outer wall of screw rod is circumferentially with along it for transporting the material in machine barrel from upstream to the helical tooth in downstream, and screw rod
Helical tooth and machine tube inner wall between there are the gap passed through for material, can make material after feeding device introducing after machine barrel
It exports and squeezes out from its mouth mold；
The screw rod is axially successively divided into feeding section, melt zone and homogenizing zone along it, wherein being located at the end of the feeding section of upstream
It is affixed as the power intake of extrusion body and the output end of reduction gearbox；It is close positioned at the homogenizing zone in downstream and head inner end
Envelope rotation connection；
The temperature control mechanism includes the cooling device for cooling down to feeding section and the heating device for heating to melt zone, institute
It states cooling device and is mounted on the corresponding machine barrel outer wall of feeding section, cool down for the material to feeding section；The heating device
It is mounted on the corresponding machine barrel outer wall of melt zone, is heated for the material to melt zone；
The controller include for controlling the feed control unit of hopper feed, the temperature control list for controlling machine barrel inner cavity temperature
Member and the motion control unit for controlling material extruded velocity, the signal output end of the motion control unit and the electricity
The control terminal of machine is electrically connected；The signal output end of the temperature conditioning unit is filled with the control terminal of the cooling device, the heating respectively
The control terminal set is electrically connected；The control terminal of the feed control unit and the control terminal of the switching door are electrically connected, for controlling folding
The opening and closing of door.
2. a kind of extrusion equipment of thermoplastic as described in claim 1, it is characterised in that: the reduction gearbox is two
Grade reduction gearbox, including cabinet, high speed shaft, high speed grade gear, jackshaft, jackshaft gear wheel, jackshaft pinion gear and low speed
Grade gear wheel, the cabinet are fixedly mounted on the table by reducer pedestal, and the equal level of the high speed shaft, jackshaft is erected at cabinet
It is interior, and high speed shaft is rotatablely connected with cabinet, jackshaft and cabinet；One end of the high speed shaft is defeated as the power of reduction gearbox
Enter end to be connected by shaft coupling with the output shaft of the motor；The high speed grade gear and the high speed shaft are keyed；In described
Between axis gear wheel, jackshaft pinion gear be inserted heart hole jackshaft be keyed, wherein jackshaft gear wheel and high speed
Grade gear engagement, forms the first order and slows down；The slow speed turbine stage gear wheel and the intracorporal screw rod of insertion case are keyed, and slow speed turbine stage is big
Gear is engaged with jackshaft pinion gear, is formed the second level and is slowed down.
3. a kind of extrusion equipment of thermoplastic as claimed in claim 2, it is characterised in that: the reduction gearbox it is upper
Portion is equipped with bearing chamber and lubricating cup, and screw rod feeding section one end is by being arranged in the indoor rolling bearing of bearing and cylinder roller bearing
It seals and is rotatablely connected with reduction gearbox, the axial and circumferential for limiting screw rod are mobile；Bearing chamber is connected to lubricating cup, is used for bearing
Indoor addition lubricating oil；Equipped with the felt collar oil sealing for placing oil leak between the screw rod and bearing chamber interior walls.
4. a kind of extrusion equipment of thermoplastic as claimed in claim 3, it is characterised in that: the spiral of the screw rod
Tooth section is rectangle.
5. a kind of extrusion equipment of thermoplastic as described in Claims 1 to 4 any one, it is characterised in that: institute
The working surface for stating screw rod has one layer of nitration case, and wherein the thickness of nitration case is more than or equal to 0.4mm, and screw rod outer circle nitrogenizes hardness
More than or equal to 840HV, brittleness is less than or equal to 2 grades.
6. a kind of extrusion equipment of thermoplastic as described in claim 1, it is characterised in that: the feeding device packet
Feeder and hopper are included, the discharge port of the feeder is connected to the feed inlet of hopper, and hopper is packed in the charging of machine barrel upstream
On seat, the discharge port of hopper is connected to the inner cavity of machine barrel, and the discharge outlet of hopper is equipped with the folding for controlling its opening and closing
Door.
7. a kind of extrusion equipment of thermoplastic as described in claim 1, it is characterised in that: the heating device packet
It includes the heating coil being wrapped on machine barrel and corresponds to the temperature sensor of barrel temperature, the temperature sensor for detecting melt zone
Signal output end and the signal input part of temperature conditioning unit be electrically connected, the energization end of heating coil pin corresponding with the temperature conditioning unit
It is electrically connected.
8. a kind of extrusion equipment of thermoplastic as described in claim 1, it is characterised in that: the cooling device packet
Several cooling tubes are included, the corresponding machine barrel of screw rod feeding section is circumferentially arranged more cooling tubes, and every cooling tube is along machine barrel axis
Interconnect to form cooling pipe network to setting, and between cooling tube, wherein two cooling tubes be in communication with the outside respectively to be formed it is cold
But liquid is imported and exported.
9. a kind of extrusion equipment of thermoplastic as described in any one of claims 1 to 3, it is characterised in that:
The cabinet of reduction gearbox is put together by upper box and lower box, and the two is affixed by outer bolt and the first nut seal, and
The setting of the two joining place opens case screw and fixed pin convenient for what is unpacked, the upstream end of machine barrel by internal-flange bolt, the second nut with
The box sealing of reduction gearbox is affixed, and affixed with the slow speed turbine stage gear wheel in it in feeding section one end of screw rod insertion bearing chamber；
The bottom of lower box is equipped with the oil outlet for being inserted into the mounting hole of scale and for draining the oil, and the measurement end of scale seals insertion
In mounting hole；Oil outlet is sealed by oil sealing pad and plug screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820493071.3U CN208576168U (en) | 2018-04-09 | 2018-04-09 | A kind of extrusion equipment of thermoplastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820493071.3U CN208576168U (en) | 2018-04-09 | 2018-04-09 | A kind of extrusion equipment of thermoplastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208576168U true CN208576168U (en) | 2019-03-05 |
Family
ID=65504393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820493071.3U Expired - Fee Related CN208576168U (en) | 2018-04-09 | 2018-04-09 | A kind of extrusion equipment of thermoplastic |
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| Country | Link |
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| CN (1) | CN208576168U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108688125A (en) * | 2018-04-09 | 2018-10-23 | 浙江工业大学 | A kind of extrusion equipment of thermoplastic |
| CN114986843A (en) * | 2022-05-25 | 2022-09-02 | 李水娇 | Double-screw anti-blocking plastic extruding machine for plastic particle production |
-
2018
- 2018-04-09 CN CN201820493071.3U patent/CN208576168U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108688125A (en) * | 2018-04-09 | 2018-10-23 | 浙江工业大学 | A kind of extrusion equipment of thermoplastic |
| CN114986843A (en) * | 2022-05-25 | 2022-09-02 | 李水娇 | Double-screw anti-blocking plastic extruding machine for plastic particle production |
| CN114986843B (en) * | 2022-05-25 | 2024-04-05 | 兴平市高科塑业有限公司 | Double-screw anti-blocking plastic extruding machine for plastic particle production |
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