CN104044234B - Rotational molding equipment - Google Patents
Rotational molding equipment Download PDFInfo
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- CN104044234B CN104044234B CN201410267346.8A CN201410267346A CN104044234B CN 104044234 B CN104044234 B CN 104044234B CN 201410267346 A CN201410267346 A CN 201410267346A CN 104044234 B CN104044234 B CN 104044234B
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Abstract
The invention provides rotational molding equipment which comprises a mould, a heating box body, a transferring drive device and an overturning drive device, wherein the transferring drive device and the overturning drive device are both connected with the mould, the transferring drive device drives the mould to move into or out of the heating box body, the overturning drive device drives the mould to rotate around two shafts which are mutually vertical, and the heating box body is used for heating the mould located in the heating box body. The rotational molding equipment further comprises a temperature control device used for adjusting the heating temperature in the heating box body, wherein the temperature control device comprises a controller, a temperature sensor and a first exhaust mechanism; the temperature sensor and the first exhaust mechanism are both electrically connected to the controller, at least one temperature sensor is arranged on at least one of the outer wall and the inner cavity wall of the mould, the first exhaust mechanism is arranged at the heating box body, and the controller is used for detecting an exhaust speed of the first exhaust mechanism according to a real-time detected temperature of the temperature sensor, so that the heating temperature in the heating box body is adjusted in real time.
Description
Technical field
The present invention relates to rotation molding field, more particularly, to one kind are suitable to the crosslinked poly- second of low-activity nuke rubbish in manufacture
The device of rotomoulding forming of alkene packing container.
Background technology
Roll moulding shaping technology is first to add plastic raw materialss in mould, and then mould constantly rotates around two orthogonal axles
And mould is heated by the thermal source of heating compartment, make the plastic raw materialss in mould in the presence of gravity and heat energy, gradually uniformly
Ground coating, melting adhere in the whole surface of die cavity, and the shape required for being shaped to, more cooled sizing, the demoulding finally obtain
Obtain product.
At present, the middle low-level waste packing container type adopting in the world is a lot, such as steel vessel, concrete container, casting
Ferrum container, glass steel container, concrete lining container, reinforcing fibre concrete container, polymer impregnated concrete container, crosslinking
Polyethylene can etc..Have from heavy and light due to crosslinked polyethylene container, efficient loading waste coefficient is big, price is relatively cheap etc.
Advantage, therefore receives more and more attention in terms of middle low-level waste packaging.Wherein, crosslinked polyethylene can be in rotation molding mistake
Crosslinked in journey, form tridimensional network and be in thermosetting, not only there is significant mechanical property, heat resistanceheat resistant creep resistant, electrically
Can and the combination property such as anti-permeability, but also have prominent resisting environmental stress and cracking and weather resistance, lower temperature resistance,
The combination property such as chemical stability and radiation-resistant property, therefore crosslinked polyethylene container be highly suitable for packaging in low put useless
Thing.
But, in packaging, the requirement to manufacturing process for the crosslinked polyethylene container of low-level waste is high, there is presently no specially
Door equipment is suitable to low-activity nuke rubbish crosslinked polyethylene packing container in manufacture.This is because the rolling of crosslinked polyethylene container
Molded is a kind of reactive processing molding, and cross-linking reaction completes in forming process, and this crosses range request resin abundant
Reaction can not be crosslinked before plasticizing forming, after the abundant plasticizing forming of resin, carry out Quick cross-linking reaction.And using common
The crosslinked polyethylene product that rotomoulding apparatus produce, during rotation molding, mould need to be heated in heating compartment, but plus
Hot tank body has that accuracy of temperature control is poor, the big (model of usually more than -10 DEG C to 10 DEG C of temperature fluctuation change of temperature fluctuation excursion
Enclose) problem, if temperature is too high, crosslinked too early, crosslinked uneven, initiator premature decomposition, inside and outside wall hair easily occur
Rough the problems such as, if temperature is too low, it is easily caused that plasticizing is bad, molding time is long, initiator lost efficacy, the degree of cross linking is low asks
Topic, the combination property difference ultimately resulting in processed crosslinked polyethylene product is it is impossible to meet use demand.
Therefore, the rotation molding of low-activity nuke rubbish crosslinked polyethylene packing container in being badly in need of will a kind of being suitable to manufacture
Equipment.
Content of the invention
It is an object of the invention to provide a kind of device of rotomoulding forming, this device of rotomoulding forming being capable of high-precision automatic tune
Section heating compartment in temperature and greatly reduce heating compartment in temperature fluctuation deviation so that mould be subject to thermally-stabilised, thus
Ensure the combination property of the crosslinked polyethylene product processed.
For achieving the above object, the invention provides a kind of device of rotomoulding forming, including mould, heating compartment, move material drive
Dynamic device and overturning drive device, described shifting material driving means and overturning drive device are all connected with described mould, and described shifting is expected
Driving means order about described mould into and out described heating compartment, and described overturning drive device orders about described mould around biphase
Mutually vertical axle rotation, the described mould that described heating compartment is pointed in described heating compartment is heated；Wherein, described rolling
Molded equipment also includes the attemperating unit for adjusting the heating-up temperature in described heating compartment, and described attemperating unit comprises to control
Device processed, temperature sensor and first exhaust mechanism, described temperature sensor and first exhaust mechanism are all electrically connected at described control
Device processed, in the outer wall of described mould and internal chamber wall, at least one is provided with least one described temperature sensor, described first exhaust
Mechanism is located at described heating compartment, described controller first row according to the real-time detection temperature adjustment of described temperature sensor
The exhaust velocity of mechanism of qi structure, with the heating-up temperature in heating compartment described in real-time regulation, described heating compartment is provided with least two
Heater, described heating compartment offers air inlet, and the air supply opening of described heater is communicated in described air inlet.
It is preferred that the outer wall of described mould is provided with least one described temperature sensor, the internal chamber wall of described mould is provided with
At least one described temperature sensor.
It is preferred that the described temperature sensor located at the outer wall of described mould is evenly distributed.
It is preferred that the described temperature sensor located at the internal chamber wall of described mould is evenly distributed.
It is preferred that described heating compartment offers first row QI KOU, described first exhaust mechanism is located at described first exhaust
Mouthful.
It is preferred that described first exhaust mechanism comprises the adjustable one-way exhaust valve being electrically connected at described controller, described
Adjustable one-way exhaust valve is adjusted according to the real-time detection temperature of described temperature sensor located at described first row QI KOU, described controller
Save the valve port opening of described adjustable one-way exhaust valve.
It is preferred that interval to the real-time detection temperature of described temperature sensor and normal temperature is preset by described controller
Limit temperature and pre-determined lower limit temperature are compared, and described controller is given birth to when described real-time detection temperature exceedes preset upper limit temperature
Become cooling control signal, and control valve port opening or the foundation of described adjustable one-way exhaust valve according to described cooling control signal
Described cooling control signal is corresponding with real-time detection temperature to adjust the valve port opening of described adjustable one-way exhaust valve or according to institute
State the valve port opening that cooling control signal increases described adjustable one-way exhaust valve with pre-set velocity；Described controller is described real-time
Detection temperature is less than and generates intensification control signal during default lower limit temperature, and according to described intensification control signal control described can
Adjust one-way exhaust valve valve port opening or according to described intensification control signal corresponding with real-time detection temperature regulation described adjustable
The valve port opening of one-way exhaust valve or according to described intensification control signal with pre-set velocity reduce described adjustable one-way exhaust valve
Valve port opening.
It is preferred that described controller is higher than default lower limit temperature in described real-time detection temperature and is less than the default upper limit
Generate during temperature and keep control signal, and according to the described valve port opening keeping control signal to control described adjustable one-way exhaust valve
For preset value or keep constant or corresponding with described real-time detection temperature valve port opening.
It is preferred that described mould offers second exhaust port, described second exhaust port is provided with second exhaust mechanism, when described
When the air pressure of the inner chamber of mould exceedes pre-set threshold value, then the described gas being located at the inner chamber of described mould orders about described second exhaust
Mechanism opens to discharge the portion gas of the inner chamber positioned at described mould, until the air pressure of the inner chamber of described mould recovers to institute
When stating pre-set threshold value, then described second exhaust mechanism closes automatically to stop aerofluxuss.
It is preferred that described second exhaust mechanism comprises passive one-way exhaust valve, described passive one-way exhaust valve is located at described
Second exhaust port, when the air pressure of the inner chamber of described mould exceedes described pre-set threshold value, is then located at the institute of the inner chamber of described mould
State gas and order about described passive one-way exhaust valve and open to discharge the portion gas of the inner chamber positioned at described mould, until described
When the air pressure of the inner chamber of mould recovers to described pre-set threshold value, then described passive one-way exhaust valve closes automatically to stop aerofluxuss.
It is preferred that being provided with heat insulation structural and/or heat-barrier material between the inwall of described heating compartment and outer wall.
Compared with prior art, because the device of rotomoulding forming of the present invention is also included for adjusting the heating in heating compartment
The attemperating unit of temperature, attemperating unit comprises controller, temperature sensor and first exhaust mechanism, temperature sensor and first row
Mechanism of qi structure is all electrically connected at controller, and in the outer wall of mould and internal chamber wall, at least one is provided with least one temperature sensor,
Heating-up temperature in heating compartment, temperature sensor real-time detection heating compartment for the first exhaust mechanism simultaneously feeds back to control
Device, controller according to the exhaust velocity of the real-time detection temperature adjustment first exhaust mechanism of temperature sensor, with real-time regulation plus
Heating-up temperature in hot tank body.Achieve the high-precision temperature automatically adjusting in heating compartment and greatly reduce heater box
Internal temperature fluctuation deviation so that mould be subject to thermally-stabilised, thus eliminate crosslinked polyethylene during rotation molding due to
Temperature is too high cause too early crosslinked, the problems such as crosslinking is uneven, initiator premature decomposition, inside and outside wall are crude and due to temperature mistake
Low lead to plastify that bad, molding time is long, initiator lost efficacy, the low problem of the degree of cross linking, fundamentally solve common rotational moulding
The problem that former exists, substantially increases the degree of cross linking of processed crosslinked polyethylene product, and makes crosslinked distribution all
Even, excellent combination property.
Brief description
Fig. 1 is the combination schematic perspective view of the device of rotomoulding forming of the present invention.
Fig. 2 is the combination schematic perspective view at another visual angle of Fig. 1.
Fig. 3 is that the device of rotomoulding forming of the present invention is complete after removing shifting material driving means, overturning drive device and mould
Sectional view.
Fig. 4 is the local being provided with heat-barrier material between the inwall of the heating compartment of device of rotomoulding forming of the present invention and outer wall
Sectional view.
Fig. 5 be the device of rotomoulding forming of the present invention mould be provided with second exhaust mechanism and temperature sensor combination three-dimensional
Schematic diagram.
Fig. 6 is the full sectional view of Fig. 5.
Specific embodiment
In order to describe technology contents, the structural features of the present invention in detail, below in conjunction with embodiment and coordinate accompanying drawing make into
One step explanation.
Refer to Fig. 1 to Fig. 5, the device of rotomoulding forming 100 of the present invention includes mould 10, heating compartment 30, moves material driving
Device 50 and overturning drive device 60, specifically, heating compartment 30 and move material driving means 50 can on flat ground,
And overturning drive device 60 is expected in driving means 50 located at shifting, but, it is not limited thereto；Move material driving means 50 and upset drives
Device 60 is all connected with mould 10, moves material driving means 50 and orders about mould 10 into and out heating compartment 30, upset drives dress
Put 60 and order about mould 10 around two orthogonal axle rotations, the mould 10 that heating compartment 30 is pointed in heating compartment 30 carries out adding
Heat；Wherein, the device of rotomoulding forming 100 of the present invention also includes the attemperating unit for adjusting the heating-up temperature in heating compartment 30
(in figure does not mark), attemperating unit comprises controller (not shown) temperature sensor 71 and first exhaust mechanism 72, and temperature passes
Sensor 71 and first exhaust mechanism 72 are all electrically connected at controller, and in the outer wall 13 of mould 10 and internal chamber wall 14, at least one sets
There is at least one temperature sensor 71, first exhaust mechanism 72 heats located at heating compartment 30, temperature sensor 71 real-time detection
Heating-up temperature in casing 30 simultaneously feeds back to controller, and controller is according to the real-time detection temperature adjustment first of temperature sensor 71
The exhaust velocity of exhaust gear 72, with the heating-up temperature in real-time regulation heating compartment 30.Achieve high-precision automatic tune
Temperature fluctuation deviation in temperature in section heating compartment 30 and greatly reduction heating compartment 30 is so that mould 10 is heated surely
Fixed, thus eliminate crosslinked polyethylene cause because temperature is too high during rotation molding too early crosslinked, crosslinked uneven, draw
Send out agent premature decomposition, inside and outside wall crude the problems such as and lead to because temperature is too low to plastify that bad, molding time is long, initiator
Inefficacy, the low problem of the degree of cross linking, fundamentally solve the problems, such as common device of rotomoulding forming.Specifically, as follows:
Wherein, in the present embodiment, the outer wall 13 of mould 10 is provided with least one temperature sensor 71, the inner chamber of mould 10
Wall 14 is equipped with least one temperature sensor 71, to improve the accuracy of detection of heating-up temperature.More excellent it is, outside mould 10
The temperature sensor 71 of wall 13 is evenly distributed, and the temperature sensor 71 located at the internal chamber wall 14 of mould 10 is evenly distributed.And,
The present invention not outer wall 13 to mould 10 and the particular number of temperature sensor 71 set by internal chamber wall 14 and concrete be distributed
Structure is not construed as limiting, and the particular number of temperature sensor 71 set by the outer wall 13 of mould 10 and concrete distributed architecture and mould
The particular number of temperature sensor 71 set by internal chamber wall 14 of tool 10 and concrete distributed architecture can be identical or different, not
In same embodiment, can flexibly be selected according to specific use demand and design, such as according to different heating temperature detection
The demand of precision, selects the temperature sensor 71 of corresponding quantity and designs corresponding distributed architecture, will not be described here.Optional
Select, temperature sensor 71 is in dismountable structure in the outer wall 13 of mould 10 and the setting structure of internal chamber wall 14, with side
Just flexibly install or remove temperature sensor 71.Specifically, in the present embodiment, temperature sensor 71 is preferably temperature control and visits
Head, but, it is not limited thereto, in different embodiments, flexibly can be selected according to actual service condition.By located at mould
Tool 10 outer wall 13 and internal chamber wall 14 temperature sensor 71 can real-time high-precision detection mould 10 in heating compartment 30
Heating-up temperature.
Meanwhile, heating compartment 30 offers first row QI KOU 31, and, in the present embodiment, first row QI KOU 31 is more excellent to be
It is opened in the sidepiece of heating compartment 30, but, it is not limited thereto, first exhaust mechanism 72 is located at first row QI KOU 31.Specifically,
First exhaust mechanism 72 comprises the adjustable one-way exhaust valve (in figure does not mark) being electrically connected at controller, and, adjustable unidirectional gas
The concrete structure of valve is well known to those of ordinary skill in the art, therefore will not be described here；Adjustable one-way exhaust valve is located at first
Air vent 31, controller is according to the valve port opening of the adjustable one-way exhaust valve of real-time detection temperature adjustment of temperature sensor 71.?
In first embodiment of the invention, controller according to the adjustable one-way exhaust valve regulation of real-time detection temperature control to described real-time inspection
Testing temperature corresponds to valve port opening, and the wherein higher valve port opening of real-time detection temperature is bigger, specifically, real-time detection temperature and valve port
Aperture can be linear relationship or those skilled in the art according to the one-to-one relationship of practical experience setting or its
His calculated relationship.Real-time detection temperature transition is corresponding valve port opening by controller, and relatively existing valve port opening is with real time
, to obtain the drive signal of the motor of adjustable one-way exhaust valve, motor is according to drive for the corresponding valve port opening of detection temperature
Dynamic signalizing activity is to control valve port to increase or to be contracted to the corresponding valve port opening of real-time detection temperature.With real-time regulation heating compartment
Heating-up temperature in 30, and flexible adjustment is quick and degree of regulation is high.Achieve and high-precision automatically adjust heating compartment 30
Temperature fluctuation deviation in interior temperature and greatly reduction heating compartment 30, certainly, is not limited.
In second embodiment of the invention, controller is interval with normal temperature by the real-time detection temperature of temperature sensor 71
Preset upper limit temperature and pre-determined lower limit temperature be compared, controller is given birth to when real-time detection temperature exceedes preset upper limit temperature
Become cooling control signal, and according to cooling control signal and the adjustable one-way exhaust valve regulation of real-time detection temperature control to described
The corresponding valve port opening of real-time detection temperature, that is, when real-time detection temperature exceedes preset upper limit temperature, control is adjustable for controller
One-way exhaust valve regulation is to valve port opening corresponding with described real-time detection temperature, the wherein higher valve port opening of real-time detection temperature
Bigger, to increase the discharge of the hot gas in heating compartment 30 speed.Specifically, real-time detection temperature and valve port opening are linear
Relation, certainly alternative real-time detection temperature and valve port opening can also be that those skilled in the art are arranged according to practical experience
One-to-one relationship or other calculated relationship；Controller generates when real-time detection temperature is less than default lower limit temperature and rises
Warm control signal, and control the valve port opening of adjustable one-way exhaust valve according to intensification control signal, specifically, controller is real-time
Detection temperature is less than during default lower limit temperature and generates intensification control signal, and described intensification control signal comprises default lower limit valve
Mouth aperture (smaller valve port opening), the valve port of the controller adjustable one-way exhaust valve of control is adjusted to be opened to default lower limit valve port
Degree is so that the speed very little discharged of hot gas in heating compartment 30 is so that heating compartment 30 can be in corresponding heater 40
Effect is lower to heat up.The program can real-time regulation by heating compartment 30 hot gas discharge speed, and then real-time regulation heating
Heating-up temperature in casing 30 is so that the device of rotomoulding forming 100 of the present invention has that accuracy of temperature control is high and that temperature fluctuation is little is excellent
Point is it is ensured that the heating-up temperature fluctuation deviation of heating compartment 30 maintains in the range of -5 DEG C to 0 DEG C, certainly, in heating compartment 30
The maintained scope of heating-up temperature fluctuation is not limited thereto, and can flexibly be selected according to specific use demand and adjust
Whole, will not be described here.
Preferably, controller is given birth to higher than default lower limit temperature and when being less than default ceiling temperature in real-time detection temperature
Become to keep control signal, according to the valve port opening keeping control signal to control adjustable one-way exhaust valve, specifically, controller is in reality
When detection temperature be higher than default lower limit temperature and keep control signal, and according to described less than generating during default ceiling temperature
Control signal is kept to control the valve port opening of adjustable one-way exhaust valve to keep constant；Certainly, alternatively, controller can also be
Controller generates higher than default lower limit temperature and when being less than default ceiling temperature in real-time detection temperature and keeps control signal,
Keep control signal to comprise default lower limit valve port opening (conventional valve port opening), and control the valve port of adjustable one-way exhaust valve
Adjust to default lower limit valve port opening.Alternatively, controller can also produce according to the concrete numerical value of real-time detection temperature
With the stability maintenance control signal of corresponding real-time detection temperature, controller is according to the adjustable one-way exhaust valve regulation of control of stability maintenance control signal
To valve port opening corresponding with described real-time detection temperature.
Certainly, in other embodiments, when real-time detection temperature exceedes preset upper limit temperature, controller can also foundation
Cooling control signal controls the valve port of adjustable one-way exhaust valve to adjust to default upper limit valve port opening, or controls according to cooling
Signal controls the valve port of adjustable one-way exhaust valve to increase with pre-set velocity, but, it is not limited, will not be described here.Real-time
When detection temperature is less than pre-determined lower limit temperature, controller can be adjustable unidirectional according to intensification control signal and real-time detection temperature control
The valve port of air bleeding valve is adjusted can to valve port opening corresponding with described real-time detection temperature or foundation intensification control signal control
The valve port adjusting one-way exhaust valve is reduced with pre-set velocity, but, it is not limited, will not be described here.
Wherein, real-time detection temperature is higher than the right of real-time detection temperature and valve port opening in the case of default ceiling temperature
Should be related to, real-time detection temperature be less than default ceiling temperature and higher than default lower limit temperature situation real-time detection temperature with
The corresponding relation of valve port opening, and real-time detection temperature is less than the situation real-time detection temperature of default lower limit temperature and valve port
The corresponding relation of aperture, three corresponding relations can equally can be different, need technical staff according to be actually needed carry out concrete
Design.
Compared with the superior, heating compartment 30 is provided with least two heaters 40, and heating compartment 30 offers air inlet 32, and,
In the present embodiment, the more excellent top for being opened in heating compartment 30 of air inlet 32, i.e. air inlet 32 is located at first row QI KOU 31
Upside so that enter heating compartment 30 in hot gas can stop the longer time, structure is more rationally compact, but, and
It is not limited；The air supply opening of heater 40 is communicated in air inlet 32 by a connecting pipe 38 so that in heating compartment 30
Heating-up temperature programming rate is fast, and then can be rapidly reached the heating-up temperature needed for mould 10, and, being capable of supplementary heating faster
The heat being lost in casing 30, meets the demand for heat of mould 10.It is an option that in the present embodiment, heating compartment
30 are provided with two heaters 40, certainly, are not limited thereto, in various embodiments, can be according to actual process requirements
And flexibly select the concrete setting quantity of heater 40, will not be described here.For example, heater 40 can be that electricity adds
The combustor of thermal, solar heat collector or oil, liquefied gas and natural gas etc., but, it is not limited thereto.
Furthermore, between the inwall 33 of heating compartment 30 and outer wall 34, it is provided with heat insulation structural (not shown) and/or heat-insulated material
Material 35, to slow down the scattering and disappearing so that heating compartment 30 has more preferable heat-insulating property of heat in heating compartment 30, in the present embodiment
In, it is provided with heat-barrier material 35 between the inwall 33 of heating compartment 30 and outer wall 34, certainly, in other embodiments, heater box
Can also be, between the inwall 33 of body 30 and outer wall 34, the group being provided with heat insulation structural or being provided with heat insulation structural and heat-barrier material 35
Close, will not be described here.Specifically, the concrete structure of heat insulation structural can be this area ordinary skill known to have every
The structure of heat effect, but, it is not limited；Heat-barrier material 35 can be various heat insulating refractory materials, such as asbestos, refractory fibre,
Kieselguhr, perlite, glass fibre, foam glass concrete, calcium silicates, alumina hollow ball, pearlife etc., but, not with
This is limited.Specifically, in the present embodiment, heating compartment 30 includes box-like body 36 and closing door 37, and box-like body 36 has
There is the hollow structure 361 for housing mould 10, one of relative both sides of box-like body 36 offer charging aperture 362,
The other of relative both sides of box-like body 36 offer discharging opening 363, closing door 37 slide respectively located at charging aperture
At 362 and at discharging opening 363, to close or to open charging aperture 362 and discharging opening 363, when moving material driving means 50 by mould 10
When moving into heating compartment 30, then the closing door 37 being located at charging aperture 362 is opened, so that mould 10 moves in heating compartment 30；
After moving material driving means 50 and moving into mould 10 in heating compartment 30, then it is located at the envelope at charging aperture 362 and at discharging opening 363
Close door 37 to be turned off, to slow down the scattering and disappearing so that heating compartment 30 has more preferable heat-insulating property of heat in heating compartment 30；When
When mould 10 is removed heating compartment 30 by shifting material driving means 50, then the closing door 37 being located at discharging opening 363 is opened, for mould
Tool 10 removal heating compartment 30.And box-like body 36 and closing door 37 are the side wall of heating compartment 30, that is, box-like body 36 and
It is provided with heat insulation structural and/or heat-barrier material 35, to realize in heating compartment 30 between the inwall 33 of closing door 37 and outer wall 34
It is provided with heat insulation structural and/or the structure of heat-barrier material 35 between wall 33 and outer wall 34, will not be described here.Corresponding, first row
QI KOU 31 is opened in the rear lateral portion of box-like body 36, and air inlet 32 is opened in the pushing part of casing.
The person of meriting attention, in addition to above-mentioned improvement, other structures may each be the heating compartment 30 in the present embodiment
Technical scheme known to those of ordinary skill in the art, will not be described here.
Furthermore, during the rotation molding of crosslinked polyethylene, in order to discharge the hot gas of inner chamber 12 the inside of mould 10
And produced gas during cross-linking reaction, mould 10 offers second exhaust port 11, and second exhaust port 11 is provided with second row
Mechanism of qi structure 20, when the air pressure of the inner chamber 12 of mould 10 exceedes pre-set threshold value, then the gas being located at the inner chamber 12 of mould 10 orders about
Second exhaust mechanism 20 opens to discharge the portion gas of the inner chamber 12 positioned at mould 10, until the gas of the inner chamber 12 of mould 10
When pressure is recovered to pre-set threshold value, then second exhaust mechanism 20 closes automatically to stop aerofluxuss, realizes the inner chamber 12 of mould 10 oneself
Dynamic aerofluxuss, rational in infrastructure compact, easy to use, and make the air pressure of the inner chamber 12 of mould 10 keep balance and stability, prevent crosslinking
Bubble, warpage and crosslinked unequal defect in polyethylene products.And, above-mentioned pre-set threshold value can be according to actual processing need
Ask and flexibly select, the present invention is not construed as limiting to this, will not be described here.Specifically, second exhaust mechanism 20 comprises passively
One-way exhaust valve (in figure does not mark), passive one-way exhaust valve located at second exhaust port 11, when the air pressure of the inner chamber 12 of mould 10
When exceeding pre-set threshold value, then the gas being located at the inner chamber 12 of mould 10 orders about passive one-way exhaust valve and opens with will be positioned at mould 10
The portion gas of inner chamber 12 discharge, until when the air pressure of inner chamber 12 of mould 10 recovers to pre-set threshold value, then passive unidirectional row
Automatically closure, to stop aerofluxuss, realizes the automatic aerofluxuss of the inner chamber 12 of mould 10 to air valve, rational in infrastructure compact, easy to use.And,
The concrete structure of passive one-way exhaust valve is well known to those of ordinary skill in the art, therefore will not be described here.
It should be noted that the present invention is not construed as limiting to the concrete structure of mould 10, mould 10 can be according to will give birth to
Produce processing the concrete structure of product and flexible design, will not be described here.
It should be noted that low-activity nuke rubbish is crosslinked poly- during the device of rotomoulding forming 100 of the present invention is suitable to manufacture
The crosslinked polyethylene product such as ethylene packing container, but, it is not limited thereto, it can also be used for according to actual use demand
Its production and processing purposes, will not be described here.
Specifically, in the present embodiment, move material driving means 50 and include turning round control tower 51 and rotating driver that (in figure is not
Show), revolution control tower 51 is connected to the outfan of rotating driver, thus realization orders about revolution control tower 51 by rotating driver revolving
Turn；Overturning drive device 60 includes the first rotary drive mechanism 61 and the second rotary drive mechanism 62, the first rotary drive mechanism
61 are installed on revolution control tower 51, and the second rotary drive mechanism 62 is installed on the first rotary drive mechanism 61, and mould 10 is installed on the
Two rotary drive mechanisms 62；Rotating driver orders about revolution control tower 51 and rotates, then revolution control tower 51 orders about the first rotary driving machine
Structure 61, the second rotary drive mechanism 62 and mould 10 all do revolution motion around the rotation centerline of rotary turret table 51, by mould
10 immigration heating compartment 30 heated or to be processed finish after mould 10 is removed heating compartment 30；First rotary drive mechanism
61 order about the second rotary drive mechanism 62 and mould 10 rotates around a trunnion axis, the second rotary drive mechanism 62 order about mould 10 around
One perpendicular to this trunnion axis rotary shaft rotation, and the first rotary drive mechanism 61 orders about that this rotary shaft and mould 10 is synchronous to be revolved
Turn, meanwhile, the second rotary drive mechanism 62 also orders about mould 10 and rotates around this rotary shaft, thus realizing passing through the first rotation driving
Mechanism 61 and the synchronous mould 10 that orders about of the second rotary drive mechanism 62, around two orthogonal axle rotations, realize the uniform of mould 10
It is heated, and, the concrete structure of the first rotary drive mechanism 61 and the second rotary drive mechanism 62 is the ordinary skill people of this area
Member is known, therefore, will not be described here.Alternatively, in the present embodiment, the first rotary drive mechanism 61 and the second rotation
The preferred scope of the output speed ratio of drive mechanism 62 is (5-50): (4-36), i.e. mould 10 is around above-mentioned trunnion axis and around vertical
The preferred scope of the rotating ratio of the straight rotary shaft in this trunnion axis is (5-50): (4-36), ensures that mould 10 is uniform with more preferable
It is heated, thus improving the degree of cross linking of processed crosslinked polyethylene product so that the crosslinked polyethylene product processed is comprehensive
Can be more excellent.Certainly, the first rotary drive mechanism 61 and the output speed ratio of the second rotary drive mechanism 62 are not limited thereto,
Flexibly can also be selected according to actual process requirements.
In conjunction with accompanying drawing, to the heating temperature in the heating compartment 30 of the device of rotomoulding forming 100 in second embodiment of the invention
Degree real-time regulation and the self-bleeding operation principle of mould 10 elaborate.
The operation principle of the heating-up temperature real-time regulation in heating compartment 30: by the temperature sensor 71 on mould 10
Heating-up temperature in real-time detection heating compartment 30 simultaneously feeds back to controller, and controller is according to the real-time detection of temperature sensor 71
The exhaust velocity of temperature adjustment first exhaust mechanism 72, with the heating-up temperature in real-time regulation heating compartment 30 so that heater box
It is interval interior that heating-up temperature in body 30 maintains required normal temperature；That is, temperature sensor 71 real-time detection on mould 10
Heating-up temperature in heating compartment 30 simultaneously exports corresponding real-time detection temperature, and controller is by this real-time detection temperature and positive room temperature
The interval preset upper limit temperature of degree and pre-determined lower limit temperature are compared, to export corresponding control signal to first exhaust mechanism
72 to adjust the valve port opening of adjustable one-way exhaust valve, finally makes the heating-up temperature in heating compartment 30 be maintained at required temperature
In the range of degree.
(exceed default when the heating-up temperature in the temperature sensor 71 real-time detection heating compartment 30 on mould 10 is too high
Ceiling temperature), controller judge real-time detection temperature exceed during preset upper limit temperature generate cooling control signal, controller according to
According to cooling control signal, real-time detection temperature transition is corresponding valve port opening, and controls adjustable one-way exhaust valve regulation to institute
State corresponding valve port opening so that the valve port opening of the more high adjustable one-way exhaust valve of heating-up temperature is bigger, until adjustable unidirectional row
The valve port of air valve increases to higher limit, thus when heating-up temperature is too high increase exhaust velocity so that in heating compartment 30 plus
Hot temperature reduces and recovers to normal temperature range.
(it is less than default when the heating-up temperature in the temperature sensor 71 real-time detection heating compartment 30 on mould 10 is too low
Lower limit temperature), controller judge real-time detection temperature be less than default lower limit temperature when generate comprise default lower limit valve port
The intensification control signal of aperture, controller is adjusted to default according to the valve port that intensification control signal controls adjustable one-way exhaust valve
, so that the speed very little discharged of hot gas in heating compartment 30, heating compartment 30 can be in corresponding heating dress for lower limit valve port opening
Heat up in the presence of putting 40, the final heating-up temperature improving in heating compartment 30.
When the heating-up temperature in the temperature sensor 71 real-time detection heating compartment 30 on mould 10 is in normal temperature area
When interior, then output one holding control signal, with control first exhaust mechanism 72 adjustable one-way exhaust valve valve port opening not
Become, be maintained at steady statue beneficial to the temperature in heating compartment 30.
Thus real-time high-precision adjust heating compartment 30 in heating-up temperature and make heating-up temperature fluctuate little it is ensured that heating
The heating-up temperature fluctuation deviation of casing 30 maintains in the range of -5 DEG C to 0 DEG C so that mould 10 is by thermally-stabilised.
The self-bleeding operation principle of mould 10: when the air pressure of the inner chamber 12 of mould 10 exceedes pre-set threshold value, be then located at
The passive one-way exhaust valve that the gas of the inner chamber 12 of mould 10 orders about second exhaust mechanism 20 is opened with will be within mould 10
The portion gas in chamber 12 are discharged, until when the air pressure of the inner chamber 12 of mould 10 recovers to pre-set threshold value, then second exhaust mechanism 20
Passive one-way exhaust valve automatically closure stopping aerofluxuss, realize the automatic aerofluxuss of the inner chamber 12 of mould 10 so that mould 10 it
The air pressure of inner chamber 12 keeps balance and stability.
To sum up, not only heating compartment 30 programming rate is fast, heating compartment 30 sealing for the device of rotomoulding forming 100 of the present invention
The fluctuation deviation of good, heating compartment 30 heating and temperature control high precision and heating-up temperature is able to maintain that at -5 DEG C extremely with thermal insulation
In the range of 0 DEG C, and mould 10 has automatic ventilating function so that the degree of cross linking of the crosslinked polyethylene product processed reaches
More than 90%, and crosslinking is evenly distributed, excellent combination property.
Compared with prior art, because the device of rotomoulding forming 100 of the present invention is also included for adjusting in heating compartment 30
Heating-up temperature attemperating unit, attemperating unit comprises controller, temperature sensor 71 and first exhaust mechanism 72, temperature sensing
Device 71 and first exhaust mechanism 72 are all electrically connected at controller, and in the outer wall 13 of mould 10 and internal chamber wall 14, at least one is provided with
At least one temperature sensor 71, first exhaust mechanism 72 is located at heating compartment 30, temperature sensor 71 real-time detection heater box
Heating-up temperature in body 30 simultaneously feeds back to controller, and controller is according to the real-time detection temperature adjustment first row of temperature sensor 71
The exhaust velocity of mechanism of qi structure 72, with the heating-up temperature in real-time regulation heating compartment 30.Achieve high-precision automatically adjusting
Temperature in heating compartment 30 and greatly reduce heating compartment 30 in temperature fluctuation deviation so that mould 10 be subject to thermally-stabilised,
Thus eliminating crosslinked polyethylene to cause too early crosslinked, crosslinked uneven, initiation during rotation molding because temperature is too high
The problems such as agent premature decomposition, inside and outside wall are crude and leading to because temperature is too low plastifies that bad, molding time is long, initiator loses
Effect, the degree of cross linking low problem, fundamentally solve the problems, such as common device of rotomoulding forming, substantially increase and are processed
The degree of cross linking of crosslinked polyethylene product, and crosslinking is evenly distributed, excellent combination property.
The above disclosed preferred embodiments being only the present invention, can not limit the right model of the present invention with this certainly
Enclose, the equivalent variations therefore made according to the claims in the present invention, still fall within the scope that the present invention is covered.
Claims (11)
1. a kind of device of rotomoulding forming, including mould, heating compartment, moves material driving means and overturning drive device, described shifting material
Driving means and overturning drive device are all connected with described mould, described move material driving means order about described mould into and out
Described heating compartment, described overturning drive device orders about described mould around two orthogonal axle rotations, described heating compartment pair
Described mould in described heating compartment is heated；It is characterized in that, described device of rotomoulding forming is also included for adjusting
Save the attemperating unit of the heating-up temperature in described heating compartment, described attemperating unit comprises controller, temperature sensor and first
Exhaust gear, described temperature sensor and first exhaust mechanism are all electrically connected at described controller, the outer wall of described mould and
In internal chamber wall, at least one is provided with least one described temperature sensor, described first exhaust mechanism located at described heating compartment,
The exhaust velocity of described controller first exhaust mechanism according to the real-time detection temperature adjustment of described temperature sensor, with reality
When adjust heating-up temperature in described heating compartment, described heating compartment is provided with least two heaters, described heating compartment
Offer air inlet, the air supply opening of described heater is communicated in described air inlet.
2. device of rotomoulding forming as claimed in claim 1 is it is characterised in that the outer wall of described mould is provided with described at least one
Temperature sensor, the internal chamber wall of described mould is provided with least one described temperature sensor.
3. device of rotomoulding forming as claimed in claim 2 is it is characterised in that the described temperature located at the outer wall of described mould passes
Sensor is evenly distributed.
4. device of rotomoulding forming as claimed in claim 2 is it is characterised in that the described temperature of internal chamber wall located at described mould
Sensor is evenly distributed.
5. device of rotomoulding forming as claimed in claim 1 is it is characterised in that described heating compartment offers first row QI KOU,
Described first exhaust mechanism is located at described first row QI KOU.
6. device of rotomoulding forming as claimed in claim 5 is it is characterised in that described first exhaust mechanism comprises to be electrically connected at
The adjustable one-way exhaust valve of described controller, described adjustable one-way exhaust valve is located at described first row QI KOU, described controller root
Valve port opening according to one-way exhaust valve adjustable described in the real-time detection temperature adjustment of described temperature sensor.
7. device of rotomoulding forming as claimed in claim 6 is it is characterised in that described controller is by the reality of described temperature sensor
When the interval preset upper limit temperature of detection temperature and normal temperature and pre-determined lower limit temperature be compared, described controller is described
Real-time detection temperature exceedes generation cooling control signal during preset upper limit temperature, and controls described according to described cooling control signal
The valve port opening of adjustable one-way exhaust valve or according to described cooling control signal corresponding with real-time detection temperature adjust described in can
Adjust the valve port opening of one-way exhaust valve or according to described cooling control signal, described adjustable one-way exhaust is increased with pre-set velocity
The valve port opening of valve；Described controller generates when described real-time detection temperature is less than default lower limit temperature to heat up and controls letter
Number, and control the valve port opening of described adjustable one-way exhaust valve or according to the described control that heats up according to described intensification control signal
Signal is corresponding with real-time detection temperature to be adjusted the valve port opening of described adjustable one-way exhaust valve or controls letter according to described intensification
Number with pre-set velocity reduce described adjustable one-way exhaust valve valve port opening.
8. device of rotomoulding forming as claimed in claim 7 is it is characterised in that described controller is high in described real-time detection temperature
Keep control signal in default lower limit temperature and less than generating during default ceiling temperature, and according to described holding control signal
Control described adjustable one-way exhaust valve valve port opening be preset value or keep constant or with described real-time detection temperature phase
Corresponding valve port opening.
9. device of rotomoulding forming as claimed in claim 1 is it is characterised in that described mould offers second exhaust port, described
Second exhaust port is provided with second exhaust mechanism, when the air pressure of the inner chamber of described mould exceedes pre-set threshold value, is then located at described mould
The gas of the inner chamber of tool orders about described second exhaust mechanism and opens to discharge the portion gas of the inner chamber positioned at described mould, directly
When the air pressure of the extremely inner chamber of described mould recovers to described pre-set threshold value, then described second exhaust mechanism closes automatically to stop arranging
Gas.
10. device of rotomoulding forming as claimed in claim 9 it is characterised in that described second exhaust mechanism comprise passively unidirectional
Air bleeding valve, described passive one-way exhaust valve located at described second exhaust port, when the air pressure of the inner chamber of described mould exceed described pre-
If during threshold values, then the gas being located at the inner chamber of described mould orders about described passive one-way exhaust valve and opens with will be positioned at described mould
The portion gas of inner chamber discharge, until when the air pressure of inner chamber of described mould recovers to described pre-set threshold value, then described passive
One-way exhaust valve closes automatically to stop aerofluxuss.
11. device of rotomoulding forming as claimed in claim 1 are it is characterised in that between the inwall of described heating compartment and outer wall
It is provided with heat insulation structural and/or heat-barrier material.
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| CN201410267346.8A CN104044234B (en) | 2014-06-16 | 2014-06-16 | Rotational molding equipment |
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| CN201410267346.8A CN104044234B (en) | 2014-06-16 | 2014-06-16 | Rotational molding equipment |
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| CN104044234B true CN104044234B (en) | 2017-01-18 |
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| CN104526945B (en) * | 2015-01-05 | 2017-02-22 | 江苏大学 | Control device and method for air flow field temperature in complex rotational molding mould |
| WO2024083808A1 (en) * | 2022-10-18 | 2024-04-25 | Polivinil Rotomachinery S.P.A. | Method for adjusting the temperature inside a rotational molding chamber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1143343A (en) * | 1994-02-18 | 1997-02-19 | 塑料自动体系有限公司 | Automatic rotamoulding apparatus and method of control |
| CN103240832A (en) * | 2013-05-23 | 2013-08-14 | 无锡新开河储罐有限公司 | Automatic control method of mold temperature in rotational molding process |
| CN203957244U (en) * | 2014-06-16 | 2014-11-26 | 中科华核电技术研究院有限公司 | Device of rotomoulding forming |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63128915A (en) * | 1986-11-19 | 1988-06-01 | Inoue Mtp Co Ltd | Manufacture of film-like plastic molded item |
| CN103128895A (en) * | 2011-11-22 | 2013-06-05 | 叶江富 | Heating box and rotational molding apparatus |
| CN103264473B (en) * | 2013-05-23 | 2015-04-22 | 无锡新开河储罐有限公司 | Moveable-type accurately-controllable-temperature full-plastic storage tank rotational moulding device |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1143343A (en) * | 1994-02-18 | 1997-02-19 | 塑料自动体系有限公司 | Automatic rotamoulding apparatus and method of control |
| CN103240832A (en) * | 2013-05-23 | 2013-08-14 | 无锡新开河储罐有限公司 | Automatic control method of mold temperature in rotational molding process |
| CN203957244U (en) * | 2014-06-16 | 2014-11-26 | 中科华核电技术研究院有限公司 | Device of rotomoulding forming |
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