CN104085068B - Plastic-rolling equipment for coating inner wall of pipe with plastic - Google Patents
Plastic-rolling equipment for coating inner wall of pipe with plastic Download PDFInfo
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- CN104085068B CN104085068B CN201410300377.9A CN201410300377A CN104085068B CN 104085068 B CN104085068 B CN 104085068B CN 201410300377 A CN201410300377 A CN 201410300377A CN 104085068 B CN104085068 B CN 104085068B
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Abstract
The invention discloses plastic-rolling equipment for coating the inner wall of a pipe with plastic. The plastic-rolling equipment comprises a vertical circular rotation die disk (1), wherein the rotation die disk (1) is driven to rotate through a driving unit, and a clamping mechanism for a pipe to be coated by plastic is arranged on the vertical disk surface of the rotation die disk (1). A powder feeding unit is fixed on one side of the rotation die disk (1), and a balance weight unit (6) is arranged on the other side, opposite to the powder feeding unit, of the rotation die disk (1); the powder feeding unit comprises a powder box (4), and a powder feeding opening facing the inner side of the rotation die disk (1) is formed in the powder box (4); the powder feeding opening of the powder box (4) is provided with a valve (3), and a connector assembly used for being butted with the pipe opening of the pipe to be coated by plastic is arranged on the other side of the valve (3). The equipment has the advantages of safety, high efficiency, high degree of automation, convenience in operation and stable product quality.
Description
Technical field
The present invention relates to rotomoulding apparatus, more particularly, it relates to the structure contributing to efficiency raising in rotomoulding apparatus is improved.
Background technology
Pipe fitting rotational molding technique, is by the powder filling of plastic-coated in high temperature pipe fitting to be processed, by overturning pipe fitting so that powder
Material uniform curing to pipe fitting inner wall, in a kind of technique of pipe fitting inner wall plastic-coated, the pipe fitting inner wall being particularly suited for arranging arm applies
Mould.
For pipe fitting rotational molding technique, it is very important for racing against time, and reason is: high-temperature pipe fitting radiates rapidly, applies
Spend the time before moulding, cause pipe fitting shortage of heat, affect follow-up rotational moulding quality, or prior art manner, improve pipe fitting
Warm temperature, causes the increase of processing cost.
With regard to this, there are the following problems for prior art:
1st, the powder case of prior art using separating, code-on-demand migration put in place after positioning and clamping, by the way of powder filling.The movement of powder case
Need the cost time, powder case needs the cost time with the interface para-position of high-temperature pipe fitting.
2nd, the closure of other opening ends of pipe fitting to be processed, closure end cap relies on bolt or c type card to block successively, during consuming
Between.
3rd, the powder case valve port of prior art, when using, opens rapidly, causes powder falling excessively rapid, and powder weight is big, produces
The problems such as raw noise, mechanical vibration.
4th, prior art rotation mould invariablenes turning speed, counterweight is fixed, when processing different size pipe fitting, its safe operation
Can be unstable, the crudy level of big tubule differs.
Content of the invention
For the problems referred to above, the present invention provides a kind of safe and efficient, high degree of automation, simple operation, product quality steady
Fixed pipe fitting inner wall plastic-coated rotomoulding apparatus.By powder filling unit is fixed on rotation mould, thus letter during plastic-coated
Change powder filling action, save the time it is ensured that plastic-coated is efficient completes.
In order to achieve the above object, pipe fitting inner wall plastic-coated rotomoulding apparatus of the present invention, drive rotation including by driver element
Vertical circular rotating mould disk, the vertical card of described rotation mould is provided with plastic pipe clamp system to be coated (for managing
Part is fixed in card).The present invention is improved by, and the side of described rotation mould is fixed with powder filling unit, described rotating mould
The opposite side of the relatively described powder filling unit of disk is provided with counterweight element.Described powder filling unit is included towards inside described rotation mould
The powder case of setting powder filling port, the powder filling port of described powder case is provided with valve, and the opposite side of described valve is provided with for reception
The interface module of the plastic-coated pipe fitting mouth of pipe.
Under optimal way, described valve includes the blade of louver window formula valve page being arranged side by side, the both sides of each described valve page
It is hingedly connected in valve frame, each described valve page central rotating shaft is articulated with same fork by BAIYE pin, described pendulum
One end of bar is hingedly connected to the stretching boom end of valve hydraulic pressure cylinder assembly, and described valve hydraulic pressure cylinder assembly includes hydraulic pressure
Supply and controlling organization.Described valve also includes inner side and is arranged at the position block at BAIYE pin range.Described valve
Can be selected for the other modes of prior art, preferably involute valve mechanism.
The mode realizing the docking of the pipe fitting mouth of pipe in prior art is more, and the interface module of preferably those efficiency highs uses.This
Invention provides a kind of optimal way to be: described interface module includes an eclipsed form cover die and one group and is used for plastic pipe pipe to be coated
Mouth flange is connected to the clamp system of described eclipsed form cover die.Wherein, open up plastic-coated powder centered on described eclipsed form cover die to lead to
Cross the plate-like mould of mouth, the described ring-shaped step being arranged concentrically countersunk head formula by the side that mouth docks plastic pipe to be coated.Thus, ring
The plastic pipe to be coated of the corresponding different specification size of the internal diameter of shape step, facilitates the positioning of pipe fitting, reaches express delivery and efficiently require.And
And the pipe fitting use being applicable to multiple internal diameter specifications touched by a set, extends the scope of application.
And described clamp system includes the hydraulic cylinder type clamp system being respectively provided with positioned at plastic pipe mouth of pipe both sides to be coated, often
One hydraulic cylinder type clamp system includes the compression hydraulic cylinder that outside fixing end is articulated with equipment support body with rotary shaft, described hydraulic pressure
The hinged clamp head piece of the motion end of cylinder, the other end of described clamp head piece is provided with convertible mode treats plastic-coated for crimping
The briquetting of pipe fitting nozzle flange；Described clamp head piece is also provided with one and makes described hydraulic cylinder motion end pin joint and described briquetting
The fixed hinge that pitch of the laps rotates.The specification of briquetting is chosen according to the specification of plastic pipe to be coated, and changes in clamp head piece to turn over
The mode turning compression uses.Certainly, as needed, clamp system can select feasible other types fixture in prior art,
Preferably those easily and efficiently fixture uses.
Described counterweight element includes the slideway being radially arranged in described rotation mould, slide block is seated on described slideway, described
Slide block is also equipped with screw thread, and is rotatably connected on leading screw, and described leading screw one end is connected to dynamic bevel gear, and described dynamic bevel gear is joined
Closing has the drive bevel gear being connected to drive end；Described slide block independent as counterweight or connect other balancing weights and use.Certainly, root
According to needs, counterweight also be may be selected directly to be fixed on rotation mould in replaceable mode and realizes.
Plastic pipe to be coated other interfaces in addition to powder filling port, are blocked by fast cap, and described fast cap includes arranging
The resistance to heat sealing plate of polyester (glass fibre+pa66) of steel gasket, described steel gasket two sides band alignment pin, simultaneously with pipe flange
Docking, is simultaneously docked with polyester sheet with holes, the outer face of described polyester sheet is fixed with handle, circumferential outer rim is arranged at intervals with f
Type quick-speed jigs (Dongguan good hand electromechanics hs-80379).
According to foregoing description, based on the process of speed pipe inwall rotomoulding apparatus, comprise the steps:
S1, make powder case be located at extreme lower position, and close valve；Specification according to treating plastic-coated pipe selects eclipsed form set
Mould, and it is installed to powder case valve side；Specification according to treating plastic-coated pipe adjusts counterweight element；
S2, after the temperature that plastic-coated pipe is heated to being intended for plastic-coated, by handling, by treat the mouth of pipe of plastic-coated pipe with
Described eclipsed form cover die docking, and clamped with clamp system；Optionally auxiliary clamping device is arranged on platform by mode by hand
On assisting compression cover die.
S3, adjusted using rotation mould and treat the position of plastic-coated pipe, manual type is treating other openings of plastic-coated pipe
Fast cap is installed；
S4, rotation mould, make powder case rotate to surface, Open valve fills poly- plastic-coated powder into pipe, then
Close and supply powder valve；
S5, make rotation mould Double-directional rotary, make powder tube wall flow and uniformly melt be attached to tube wall
On flange water-line face；
S6, rotation mould make powder case rotate to underface, Open valve, do not melt remaining powder and then back into shutoff valve after powder case
Door；
S7, make rotation mould Double-directional rotary, make coating uniform be melted in inside pipe wall；
S8, plastic-coated finish, and take off the fast cap in s3 with manual type；Decontrol the clamp system in s2, pipe is used
Crane moves to cooling finishing area and carries out water-cooled curing molding.
For required processing pipe fitting, after weaving operation sequence on console electronic operation screen, above-mentioned s4, s5, s6, s7
Step is automatically controlled by electronic center console and completes.
The beneficial effects of the present invention is:
1st, powder case (powder filling unit) is placed directly within the side of rotation mould, powder case is spiraled in rotating mould together with pipe fitting
Turn, changing prior art powder case needs mobile and positioning mode, saves the time, decreased high-temperature pipe fitting before rotational moulding
The radiating time, thus substantially reducing cost, improve production efficiency.
2nd, powder case arranges the valve port of venetian blind type, solves prior art powder case powder falling speed soon, weight is big, and noise is big
Problem.
3rd, powder case selects eclipsed form cover die and the cooperation of hydraulic clamping mechanism, the fixation plastic pipe to be coated of fast accurate, weight
Stacked cover die makes present device be suitable for the processing of multiple plastic pipes to be coated under a machining state, expands application model
Enclose, and pipe fitting is rapid with the para-position of powder case interface, convenient, time-consuming.And hydraulic clamping mechanism can be quickly by pipe
Part flange is docked to powder case interface, time-consuming further.
4th, plastic pipe to be coated except with powder case docking port in addition to other mouths of pipe, for artificial quick blocking, from quick clip
Tool blocks light to steel gasket and polyester shrouding on pipe fitting mouth, and using positioning finger setting, reduces pipe fitting plastic-coated further
The radiating time before.
5th, balance weight mechanism drives leading screw, and then the position of regulation balancing weight by Bevel Gear Transmission, reaches quick regulation and joins
The purpose of weight.And, balance weight mechanism arranges using it is ensured that rotation mould steadily turns mainly for the powder case that rotation mould rotates
Dynamic, reach the purpose of counterweight balance.
To sum up, present device has the characteristics that safe and efficient, high degree of automation, simple operation, product quality are stable.
Brief description
Fig. 1 is the structural representation of pipe rotational molding technique equipment of the present invention.
Fig. 2 is the side structure schematic view of equipment shown in Fig. 1.
Fig. 3 is the structural representation that the present invention equips driver element.
Fig. 4 is the perspective view of driver element shown in Fig. 2.
Fig. 5 is the perspective view of rotation mould and counterweight element.
Fig. 6 is the front view of structure shown in Fig. 5.
Fig. 7 is the governor motion schematic diagram of counterweight element.
Fig. 8 is the attachment structure schematic diagram in counterweight element between governor motion and balancing weight.
Fig. 9 is mplifying structure schematic diagram at p in Fig. 8.
Figure 10 is the perspective view of clamp head piece in clamp system.
Figure 11 is the perspective view of clamp system.
Figure 12 is the overlooking the structure diagram of clamp system.
Figure 13 is the perspective view of powder case valve.
Figure 14 is the side structure schematic view of powder case valve.
Figure 15 is the perspective view of eclipsed form cover die.
Figure 16 is the side structure schematic view of eclipsed form cover die.
Figure 17 is fast cap overlooking the structure diagram.
Figure 18 is the side structure schematic view of fast cap.
Figure 19 is the structural representation of steel ring in fast cap.
Figure 20 is the side structure schematic view of steel ring structure shown in Figure 19.
Specific embodiment
Pipe rotational molding technique equipment of the present invention, composition includes drive mechanism, rotating disk, counterweight guiding mechanism, pipe installation
Platform, hydraulic locking tube device, powder box, hydraulic powder feedway, mould etc..Specifically, as shown in figure 1, the present invention
Pipe fitting inner wall plastic-coated rotomoulding apparatus, including the vertical circular rotating mould disk 1 being driven rotation by driver element, rotation mould 1
Plastic pipe clamp system to be coated is provided with vertical card.Clamp system is used for pipe fitting being fixed to card, including carrying hereinafter
And Hydraulic Clamping Mechanism, and other auxiliary clamps (select feasible fixture) etc..The side of rotation mould 1 is fixed with filling
Powder unit, the opposite side of the relatively described powder filling unit of described rotation mould 1 is provided with counterweight element 6.
Rotation mould 1 driver element (drive system) is mainly by buncher 71 and gear-bearing structure composition, power train
System is shown in Fig. 2～4, and motor drives driver pinion 72 to rotate, and little gear 72 is engaged with passive gear wheel 73, and gear wheel 73 drives master
Axle 74 rotates, and the setting of main shaft leading portion connects the pedestal 75 of rotation mould 1.Under optimal way, the maximum rotating weight of actuating device
(pipe fitting adds powder filler weight in pipe) is 1t, and 10 revs/min of maximum rotative speed sets rotary speed according to pipe specification,
Stepless smoothly adjustable-speed in the range of adjustable-speed.Motor possesses makes the rotating forward of pipe periodic reverse, reversion, optional position stop, answering
Jerk stops control function；Rotational time parameter can be set according to pipe specification simultaneously, equip and can automatically stop after reaching the stipulated time
Only in suitable optional position.
In Fig. 1, powder filling unit includes the powder case 4 towards described rotation mould 1 inner side setting powder filling port, the powder filling of powder case 4
Mouth is provided with valve 3, and the opposite side of valve 3 is provided with the interface module for docking the plastic pipe mouth of pipe to be coated.
Wherein, powder case 4 mainly includes casing, cleaning and access hole, powder observation mouth.Inside powder box body under optimal way
There is baffle arrangement centre, it is to avoid in device powder case in rotary course, powder flows back and forth, and powder observation mouth adopts combining glass
Structure can powder amount in clear view powder case at any time to supplement powder in time, can easily be entered by cleaning and access hole
Row cleaning and maintenance.The requirement that the setting needs of powder case meet is: is easy to powder amount observation and supplements in time, guarantees powder simultaneously
Case can obtain thorough cleaning and maintenance.
As shown in Figure 13～14, the valve of powder filling unit includes the blade of louver window formula valve page 91, Mei Yisuo being arranged side by side
The both sides stating valve page 91 are hingedly connected in valve frame, and each described valve page 91 central rotating shaft is articulated with same by BAIYE pin 99
On a piece fork 94, one end of described fork 94 is hingedly connected to the stretching boom end of valve hydraulic pressure cylinder assembly 96, institute
State valve hydraulic pressure cylinder assembly and include hydraulic pressure supply and controlling organization.Described valve also includes inner side and is arranged at BAIYE pin 99 maximum row
Position block 95 at journey.In figure, rocking bar 93 refers to hinge, plays hinged effect between valve page central shaft and fork.Powder filling unit
Valve also can be selected for other involute valves.
Foregoing description understands, valve mainly includes valve body, rocking bar, fork, position block, valve disc, valve oil cylinder etc..Use
Method: control on-off control valve mechanism in adopting, drive rocking bar to open and close valve BAIYE by hydraulic jack push-and-pull fork,
Into pipe, gentle injection powder or recovery powder are in powder box.Valve utilizes hydraulic selector to control, safe and reliable, can flexibly beat
Open and close BAIYE, realizes powder and is automatically injected and reclaims function.
And the interface module that valve is attached thereto, as shown in figure 1, include an eclipsed form cover die 5 and one group to be used for treating
Plastic-coated pipe fitting nozzle flange is connected to the clamp system 2 of described eclipsed form cover die.In order to ensure the clamping of plastic pipe to be coated, permissible
Increase the auxiliary clamping device being pressed on cover die, select Dongguan good hand electromechanics hs-11421-ss type chuck apparatus etc..
As shown in Figure 15～16, centered on described eclipsed form cover die 5, open up the plate-like mould that plastic-coated powder passes through mouth 21, institute
State the ring-shaped step being arranged concentrically countersunk head formula by the side that mouth 21 docks plastic pipe to be coated.Thus, the internal diameter pair of ring-shaped step
Answer the plastic pipe to be coated of different specification size, facilitate the positioning of pipe fitting, reach express delivery and efficiently require.And a set is touched and can be fitted
Pipe fitting for multiple internal diameter specifications uses, and extends the scope of application.
In figure, eclipsed form cover die mainly include interfix supporting plate (being mainly used in the location and installation of different size pipe),
Installing plate (being mainly used in installation on platform for the mould), reinforcement 25.Using method: chosen corresponding according to pipe specification
Mould, mould is arranged on rotary platform device with artificial or crane mode, is subsequently put the pipe heating by crane
Put and position in the hole in mould, open hydraulic clamp switch locking and be arranged on the pipe on platform.Every group of eclipsed form mould can be used for
The processing of 2-3 kind specification pipe, without frequent more mold exchange, every kind of eclipsed form mould can process two to three kinds of different flange specification
Pipe, reduce change and installation mold time, reduce pipe heat energy loss, improve production efficiency.
As shown in Figure 10～12, clamp system 2 includes the hydraulic cylinder type being respectively provided with positioned at plastic pipe mouth of pipe both sides to be coated
Clamp system, each hydraulic cylinder type clamp system include outside fixing end with rotary shaft 88 hinged with equipment support body on clamping liquid
Cylinder pressure 81, the hinged clamp head piece 83 of the motion end of described hydraulic cylinder 81, the other end of described clamp head piece with overturn compression and
Detachable mode is provided with the briquetting 84 for crimping plastic pipe nozzle flange to be coated；Described clamp head piece is also provided with one
Make the fixed hinge 82 that described hydraulic cylinder 81 motion end pin joint is rotated with described briquetting pitch of the laps.The specification of briquetting 84 according to
The specification of plastic pipe to be coated is chosen, and overturns replacing use in clamp head piece 83.
Including above-mentioned clamp system the assembly present invention equipment core component, mainly have platform, clamp system (supporting plate,
Chuck, briquetting, oil cylinder etc.) form, supporting plate movement is arranged on below platform structure using twin-stage oil cylinder and (reduces platform entirety chi
Very little), briquetting has turn over function.Using method: briquetting is set in advance according to pipe flange specification, and installs on platform
Eclipsed form mould, being placed on after stage apparatus after pipe makes chuck rapid horizontal withstand by the supporting plate Shift cylinder at two ends
Outer tube surface, controls clamping cylinder quickly to make briquetting be pressed on downwards tube outer wall and flange junction simultaneously, treats that plastic-coated is tied
Shu Hou, unclamps briquetting and chuck, and clamp system resets.
Clamp system can arrange remote pilot switch, easy to operate quick, can fix heating tube in the short time.With
During the pipe of same two kinds of different size flanges of mould plastic-coated, adjust upset briquetting and realize compressing pipe subfunction, easy to operate
Improve production efficiency.
Furthermore it is preferred that under mode, moveable counter weight slide block is provided with circular rotating mould 1, according to pipe specification
Press scale adjustment balancing weight position at any time, to obtain good stability when guaranteeing and being equipped in the various pipe of rotation.Referring specifically to
Shown in Fig. 5～9, counterweight element 6 includes the slideway 61 being radially arranged in described rotation mould 1, slide block is seated on described slideway 61
62, described slide block is also equipped with screw thread, and is rotatably connected on leading screw 65, and described leading screw one end is connected to dynamic bevel gear 66, described
Dynamic bevel gear 66 is combined with the drive bevel gear being connected to drive end；Described slide block independence as counterweight or connects other counterweights
Using that is to say, that described balancing weight can be multiple, balancing weight 67 and 68 as shown in Figure 8 is connected to slide block 62 to block
Upper and lower surface, slide block 62 can also use as a balancing weight itself.Weight slide block using method: work out pipe sizing and join
Recalibration synopsis, according to the scale on pipe to be processed corresponding adjustment counterweight label, true depending on the specification of pipe and length
Determine the need of carrying out counterweight adjustment, such as need to adjust, realized (by bevel gear and adjusting screw rod transmission with ratchet spanner operation
To adjust mobile counterweight slide position), pointer represents that adjustment finishes when reaching corresponding scale label value.
By the portable counterweight element of setting, improve the processing safety of equipment rotation, can enlarged pipe processing dimension model
Enclose, enable this steadily of centre of gravity during keeping centrifugal rotation when being equipped in processing different specification size pipe.
During the use of present device, also use fast cap, remove powder filling port for blocking plastic pipe to be coated
Other outer interfaces.As shown in Figure 17～20, fast cap includes arranging the resistance to heat sealing plate of the polyester 40 (glass fibers of steel gasket 44
Dimension+pa66), steel gasket two sides band alignment pin 43, simultaneously dock with pipe flange, simultaneously dock with polyester sheet with holes, institute
The outer face stating polyester sheet is fixed with handle 41, and circumferential outer rim is arranged at intervals with f type quick-speed jigs 42 (the preferably good mobile phone in Dongguan
Electric hs-80379)
Capping is the structure design that polyester blind plate adds steel gasket, for the closure frock of Sealing jaw end face of flange.(note
Meaning steel gasket will make flange water-line face reserve the space of more than 3mm, to enable polyethylene powders fully to adhere after mounting
In flange water-line face)
The using method of fast cap: corresponding capping is selected according to pipe specification, will be covered soon with f type quick-speed jigs
Speed is arranged on companion flange face and (when using first, capping and packing ring is correctly placed on flange face by alignment pin, and presss from both sides
Tight quick-speed jigs, adjustment bolt is elastic, makes clamp power moderate, tightens nut), unclamp quick-speed jigs after the completion of construction, press
Order takes off capping and packing ring.
The advantage of fast cap: capping and fixture are structure as a whole, polyester material, lightweight construction and resistance to height are selected in capping
Temperature, manually convenient to operation, in extremely short time inner sealing tube interior space, lower road rotational moulding work can be carried out with prestissimo
Sequence, reduces heat energy loss it is ensured that polyethylene coated steel pipe quality.
To sum up, fast cap closure includes being fixed with the resistance to heat sealing plate of polyester of steel gasket, described steel gasket two sides band
Alignment pin, is simultaneously docked with the resistance to heat sealing plate of described polyester with holes, is simultaneously used for docking with the flange treating plastic-coated pipe.Described poly-
Outside the resistance to heat sealing plate of ester, handle is set, additionally, the marginating compartment of the resistance to heat sealing plate of described polyester is fixed with f type quick-speed jigs.
According to the description of the said equipment, present invention also offers a kind of process based on the said equipment, including as follows
Step
S1, make powder case be located at extreme lower position, and close valve；Specification according to treating plastic-coated pipe selects eclipsed form set
Mould, and it is installed to powder case valve side；Specification according to treating plastic-coated pipe adjusts counterweight element；
S2, after the temperature that plastic-coated pipe is heated to being intended for plastic-coated, by handling, by treat the mouth of pipe of plastic-coated pipe with
Described eclipsed form cover die docking, and clamped with clamp system；Optionally auxiliary clamping device is arranged on platform by mode by hand
On assisting compression cover die.
S3, adjusted using rotation mould and treat the position of plastic-coated pipe, manual type is treating other openings of plastic-coated pipe
Fast cap is installed；
S4, rotation mould, make powder case rotate to surface, Open valve fills poly- plastic-coated powder into pipe, then
Close and supply powder valve；
S5, make rotation mould Double-directional rotary, make powder tube wall flow and uniformly melt be attached to tube wall
On flange water-line face；
S6, rotation mould make powder case rotate to underface, Open valve, do not melt remaining powder and then back into shutoff valve after powder case
Door；
S7, make rotation mould Double-directional rotary, make coating uniform be melted in inside pipe wall；
S8, plastic-coated finish, and take off the fast cap in s3 with manual type；Decontrol the clamp system in s2, pipe is used
Crane moves to cooling finishing area and carries out water-cooled curing molding.
For required processing pipe fitting, after weaving operation sequence on console electronic operation screen, above-mentioned s4, s5, s6, s7
Step is automatically controlled by electronic center console and completes.
The present invention will heat in gas-fired heater and treat plastic-coated pipe master after (preset temperature interval be 280 DEG C -330 DEG C)
One end of pipe is placed on (stage apparatus bottom is connected) on the stage apparatus of supporting flange cover die with for powder case, by filling in platform
The Hydraulic Clamping Mechanism put is locked pipe, disk and adjunct platform structure edge is rotated by buncher drive mechanism
Center of turntable axially rotates, and then the pipe rotation on platform is stopped at correct position, with manual type in the pipe other end
And attached arm end face of flange installs special-purpose assorted capping, subsequently make to rotate to surface for powder case, now open and supply powder valve
Fill selected polyethylene powders into pipe, be then shut off for powder valve, rotary apparatuss make pipe periodically by setup parameter
Reciprocal vertical direction rotates, and so that powder is flowed in tube wall and uniformly be attached on tube wall and flange water-line face, reaches
After polyethylene coating technological requirement, equipment stops the rotation in correct position, is then turned on making remaining powder all naturally fall after rise for powder valve
To powder box, now close and supply powder valve, equipment is timed rotation again, takes off capping with manual type after reaching specified parameter
Unclamp hydraulic locking apparatus, pipe is moved to cooling finishing area with crane and carry out water-cooled curing molding.
This technological equipment has taken into full account that tube temperature change is issuable to polyethylene coating quality and has directly affected most,
Whole design idea make each equipment operation link with most convenient quick the most safely and efficiently mode to carry out tube wall
Polyethylene powders application, to lift the quality of polyethylene coated steel pipe as much as possible.
According to foregoing description, the operation sequence of pipe rotational molding technique equipment of the present invention can be concluded by following form:
Pipe rotational molding technique equipment operation system of the present invention, mainly includes operating console (console), drive system, mould
Disk and balance weight mechanism, platform and clamp system, supply powder valve mechanism, powder case, cover die, capping etc..Operating console function includes
Rotating forward, reversion, speed governing, stopping, jerk, for the control key such as powder, on control station, touch display screen can arrange program control operations, behaviour
Make control station using fixed, be located at and be easy to manually-operated position.
Additionally, present invention coating uses material, preferably ldpe resin powder, as needed with new material
Research and development progress, also can be selected for the plastic-coated powder that other suitable present invention process equipment and method are.Here, specifically disclosing this
The bright polyethylene resin powder characteristic being:
| Project name | Unit | Index |
| Density | kg/m3 | More than 915 |
| Tensile strength | n/mm2 | More than 11.8 |
| Tension damaged deformation rate | % | More than 300 |
| Hardness | hdd | More than 40 |
| Vicat softening temperature | ℃ | More than 85 |
| Environmental stress resistance is cracked | h | More than 1000 |
| Impact resistance | — | Pin hole can not occur |
Polyethylene plastics coated tube production process and control require:
Coating inspection project and requirement
Furthermore, it is necessary to explanation, the polyethylene tube that different polyethylene powders raw material production goes out is in physical and chemical index
Upper meeting is variant.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (1)
1. a kind of pipe fitting inner wall plastic-coated rotomoulding apparatus, including vertical circular rotating mould disk (1) being driven rotation by driver element,
Described rotation mould (1) vertical card on be provided with plastic pipe clamp system to be coated it is characterised in that
The side of described rotation mould (1) is fixed with powder filling unit, the relatively described powder filling unit of described rotation mould (1) another
Side is provided with counterweight element (6),
Described powder filling unit includes arranging the powder case (4) of powder filling port towards inside described rotation mould (1), described powder case (4)
Powder filling port is provided with valve (3), and the opposite side of described valve (3) is provided with the interface group for docking the plastic pipe mouth of pipe to be coated
Part；
Described valve includes the blade of louver window formula valve page being arranged side by side, and the both sides of each described valve page are hingedly connected to valve frame
On frame, each described valve page central rotating shaft is articulated with same fork by BAIYE pin, and one end of described fork is with hinged side
Formula is connected to the stretching boom end of valve hydraulic pressure cylinder assembly, and described valve hydraulic pressure cylinder assembly includes hydraulic pressure supply and controlling organization；
Described valve also includes inner side and is arranged at the position block at BAIYE pin range；
Described interface module includes an eclipsed form cover die and one group described heavy for being connected to plastic pipe nozzle flange to be coated
The clamp system of stacked cover die；Wherein, open up the plate-like mould that plastic-coated powder passes through mouth centered on described eclipsed form cover die, described
It is arranged concentrically the ring-shaped step of countersunk head formula by the side that mouth docks plastic pipe to be coated；
Described clamp system includes the hydraulic cylinder type clamp system being respectively provided with positioned at plastic pipe mouth of pipe both sides to be coated, each hydraulic pressure
Cylinder formula clamp system includes the outside fixing end compression hydraulic cylinder that is articulated with equipment support body with rotary shaft, described hydraulic cylinder dynamic
Make the hinged clamp head piece in end, the other end of described clamp head piece is provided with for crimping plastic pipe pipe to be coated in convertible mode
The briquetting of mouth flange；Described clamp head piece is also provided with one so that described hydraulic cylinder motion end pin joint and described briquetting pitch of the laps turn
Dynamic fixed hinge；
Described counterweight element includes the slideway being radially arranged in described rotation mould, slide block is seated, described slide block on described slideway
Also it is equipped with screw thread, and is rotatably connected on leading screw, described leading screw one end is connected to dynamic bevel gear, and described dynamic bevel gear is combined with
It is connected to the drive bevel gear of drive end；Described slide block independent as counterweight or connect other balancing weights and use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300377.9A CN104085068B (en) | 2014-06-27 | 2014-06-27 | Plastic-rolling equipment for coating inner wall of pipe with plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300377.9A CN104085068B (en) | 2014-06-27 | 2014-06-27 | Plastic-rolling equipment for coating inner wall of pipe with plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104085068A CN104085068A (en) | 2014-10-08 |
| CN104085068B true CN104085068B (en) | 2017-02-01 |
Family
ID=51632882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410300377.9A Active CN104085068B (en) | 2014-06-27 | 2014-06-27 | Plastic-rolling equipment for coating inner wall of pipe with plastic |
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| CN105729697B (en) * | 2016-02-29 | 2019-04-26 | 浙江海洋学院 | A kind of casting piece uploading of rotational moulding yacht |
| CN115401480A (en) * | 2022-08-16 | 2022-11-29 | 成都飞机工业（集团）有限责任公司 | High-speed eccentric rotating clamping device and eccentric adjusting method thereof |
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| JPS5114942A (en) * | 1974-07-29 | 1976-02-05 | Daiichi Koshuha Honsha Kk | KANTAITONONAIMENNITOSO MATAHA RAININGUO HODOKOSUHOHOOYOBIDOSOCHI |
| US4722678A (en) * | 1983-06-03 | 1988-02-02 | Ex-Cell-O Corporation | Rotational mold with valved charge box |
| GB9726715D0 (en) * | 1997-12-19 | 1998-02-18 | Rotospeed Limited | Improvements in or relating to rotational moulding |
| BRPI0810706A2 (en) * | 2007-04-30 | 2014-10-21 | Charles Caulder Bree | ROTATIONALLY MOLDED AND MOLDED PRODUCTS. |
| CN202716407U (en) * | 2012-07-18 | 2013-02-06 | 孙罗娇 | Large-torque L arm for rotational molding machine |
| CN203937081U (en) * | 2014-06-27 | 2014-11-12 | 大连船舶重工集团有限公司 | A kind of pipe fitting inner wall plastic-coated rotomoulding apparatus |
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