A kind of plastics secondary frothing forming machine
Technical field:
The present invention relates to plastic processing machinery, particularly a kind of plastics secondary frothing forming machine.
Background technology:
Plastic foamed moulding be by the rubber/plastic raw materials such as PE, EVA through banburying, be placed on again in secondary frothing forming machine after opening refining, primary oil pressure moulding, after steam mold pressing, just become finished product.
Secondary frothing forming machine is made up of frame, Hydraulic Station, oil cylinder, mould bases frame, upper rectangle template, lower bolster, confession drainage mechanism, drawing-die position-limit mechanism.Frame is made up of top board frame, floor board framing, four root posts.Template frame is the vertical vertical rectangular frame of a rectangular slab upper surface, and upper rectangle template is fixed on template frame lower surface; Hydraulic Station, two oil cylinder seats are separately fixed at top board frame upper face center and both sides.The piston boit of oil cylinder is through after two corresponding apertures of top board frame, and its bottom is fixedly connected with template frame.Upper rectangle template is that some rectangular tubes are welded into after a S shape pipe, pastes in the top to bottom, left and right, front and rear of S shape pipe the steel plate of burn-oning, and forms a rectangular-shaped template.Steam, cooling water, compressed air is all by injecting respectively in S shape pipe, so as to template heat, cooling, empty operation.One jiao of cuboid template is provided with influent stream mouth, is provided with drainage port in the diagonal orientation of cuboid template influent stream mouth.Lower bolster has six, lower bolster is to be welded and fixed a rectangle frame in cuboid template upper surface surrounding, and rectangle frame inside casing is that four longitudinal vertical plates surround, housing is that angle bar surrounds shape, forms a runner between interior housing, for fluid flow so that give raw material surrounding heat, cooling.Rectangle frame is provided with influent stream mouth, diagonal angle drainage port equally, and in the time closing frame, cuboid template plays upper and lower mould effect simultaneously.
Be that steam pipe, water pipe, tracheae enter a fluid tank by three valves respectively for drainage mechanism, fluid tank is drawn respectively seven flexible pipes and is communicated with seven template influent stream mouths respectively, and before entering respectively six lower bolster influent stream mouths, be communicated with the rectangle frame influent stream mouth in corresponding templates by threeway again, drainage mechanism, in the diagonal orientation for stream mechanism design symmetry, is communicated with principle the same with influent stream mouth mode of communicating.
Drawing-die position-limit mechanism is both sides one of the fixing welding symmetrical transverse slats each other respectively of each cuboid template front and back sides, seven transverse slats up and down of seven monolateral sides of cuboid template form one group of position-limit mechanism, and four groups of position-limit mechanisms split four jiaos of cuboid templates.The gag lever post that in two neighbouring transverse slats corresponding apertures, a cover unification bolt, nut form, when two transverse slats separate, maximum spacing is the spacing of nuts and lower nut, when two templates are superimposed, bolt is walked in corresponding aperture, can not push up mutually with other transverse slats again simultaneously.
Production procedure is: material loading, template closure, steam intensification foaming, water quench mould, compressed air are that template S shape channel clearance, template separate, blanking.
The defect of this structure is: the S shape pipe solder joint in cuboid template is too many, often has solder skip point earial drainage, causes template to conduct heat inhomogeneous, even produces the phenomenon that leaks.Simultaneously poor as the upper and lower surface flatness of weldment template, welding also can produce upper and lower surface template deformation, when mold pressing, the poor initiation depression points of flatness position internal memory air makes product upper and lower surface have depression pit, and the product upper and lower surface amount of scabbling strengthens and affects cost when the follow-up shaping of product.Secondly, when material loading, seven templates will separate, and the conventional hand of manual operation stretches between template to be processed, and after mold pressing simultaneously, product is shoveled out to also useful hand processing.But now unsettled adjacent forms is by four screw rod suspentions for each template, and seven layers of template weight are quite large again, and bolt and nut corrosion under this sometimes hot and sometimes cold environment is serious, often has nut obscission to cause template whereabouts or crooked, thereby causes personal injury.
Summary of the invention:
The object of the invention is to overcome above-mentioned weak point, a kind of plastics secondary frothing forming machine is provided.
The solution of the present invention is: comprise frame, Hydraulic Station, oil cylinder, mould bases frame, upper rectangle template, lower bolster, supply drainage mechanism, drawing-die position-limit mechanism, it is characterized in that: between the top board frame in frame four columns outsides, floor board framing, fix respectively a vertical vertical limiting plate, two vertical vertical limiting plate outer surface spacing of left and right sides are less than cuboid template width, fix every vertical vertical limiting plate outer surface laminating six grades of stepped plates that a grade is long; Fix respectively the block board of a rectangle with bolt at the two on the surface, the cuboid template left and right sides of six lower bolsters, the length that top-down single group block board protrudes cuboid template meets the following conditions: in the time that six counterdies are left behind, the screens of every group of six block board external end heads difference is on six ladder upper surfaces of stepped plate; Upper rectangle template is fixed on the lower surface of frame top board frame; Under framework soleplate frame, sky is provided with melt pit, the cylinder barrel of Hydraulic Station, two oil cylinders is arranged on melt pit bottom surface, the piston boit of two oil cylinders is respectively through being fixedly connected with inverted mould bases frame after floor board framing corresponding aperture, and the lower bolster of below is fixed on mould bases frame upper surface.
The invention has the advantages that: oil cylinder is inverted and is made the other screens of lower bolster downlink time division on stepped plate, safe and reliable.Setting up of cuboid template bulk, air tight thermal capacity raising, the flatness of simultaneously making improves, and then enhances productivity and product thickness.
Brief description of the drawings:
Fig. 1 is prior art structural representation.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is the B portion enlarged drawing of Fig. 1.
Fig. 4 is prior art cuboid formwork structure schematic diagram.
Fig. 5 is structural representation of the present invention.
Fig. 6 is the C-C cutaway view of Fig. 5.
Fig. 7 is cuboid formwork structure schematic diagram of the present invention.
Detailed description of the invention:
The present invention includes frame, Hydraulic Station 6, oil cylinder 5, mould bases frame 3, upper rectangle template 12, lower bolster 13, supply drainage mechanism 1, drawing-die position-limit mechanism, it is characterized in that: between the top board frame 4 in frame four column 17 outsides, floor board framing 2, fix respectively a vertical vertical limiting plate 11, two vertical vertical limiting plate outer surface spacing of left and right sides are less than cuboid template 18 width, fix every vertical vertical limiting plate 11 outer surface laminatings six grades of stepped plates 9 that a grade is long; Fix respectively the block board 10 of a rectangle with bolt at the two on cuboid template 18 surfaces, the left and right sides of six lower bolsters 13, the length that top-down single group block board 10 protrudes cuboid template 18 meets the following conditions: in the time that six lower bolsters 13 decline, every group of six block boards, 10 external end heads difference screens are on six ladder upper surfaces of stepped plate 9; Upper rectangle template 12 is fixed on the lower surface of frame top board frame 4; Be provided with melt pit at 2 times skies of framework soleplate frame, the cylinder barrel of Hydraulic Station 6, two oil cylinders 5 is arranged on melt pit bottom surface, the piston boit of two oil cylinders 5 is respectively through being fixedly connected with inverted mould bases frame 3 after floor board framing 2 corresponding apertures, and the lower bolster 13 of below is fixed on mould bases frame 3 upper surfaces.
The cuboid template 18 of upper rectangle template 12, lower bolster 13 is monoblock shape, several longitudinal round tube holes of the cuboid template 18 interior uniform even numbers of rectangular block shape, longitudinally round tube hole both ends are provided with respectively step screwed hole, and in each step screwed hole, a cover unification rubber gasket 15 is rear fixing with plug 16, cuboid template 18 both sides, front and back in inner side, contiguous step screwed hole orientation are respectively equipped with a cross through hole, two points of bulkhead posts 14 respectively tight fit are inserted in two cross through hole, divide bulkhead post 14 to be multistage reducing Step Shaft shape, two points of bulkhead posts 14 large, path step shaft part is and is dislocatedly distributed and meets the following conditions: two points of bulkhead posts 14 are by after the two port shutoff of two cross through hole, several longitudinal round tube holes are separated into two S shape passages of longitudinal symmetry, the influent stream mouth 7 of two S shape passages is in cuboid template 18 both sides, limit, forward position, the drainage port 8 of two S shape passages is in the rear middle part along limit of cuboid template 18.
Divide the large journal axle of bulkhead post 14 that the transverse holes between two adjacent longitudinal round tube holes is blocked, its path axle is communicated with two adjacent longitudinal round tube holes, fluid round-formed annular space in path axle cylindrical and cross through hole flows, and laterally flows into another adjacent longitudinal round tube hole from a longitudinal round tube hole.Because S shape passage two ends runner misplaces each other, so the large journal axle of two points of bulkhead posts, little journal axle are also the horizontal space shape that misplaces each other.
The present invention is cuboid template monoblock, exempts distortion that welding produces, leaks.The integration also homogenising that makes to conduct heat, thermal capacity also greatly improves, and has improved shaping speed and production efficiency, and the complete complanation of its monoblock cuboid template upper and lower surface can not produce depression pit.The high 9cm of former die cavity, be 8.5cm after cooling, owing to there being pit, upper and lower surface is scabbled after tangent plane only remaining 7.6cm, more than its product thickness after scabbling is brought up to 8cm after monoblock flatness improves, material is made full use of, and has also reduced production cost simultaneously.
The setting of two influent stream mouths of a template 7, two drainage ports 8, the flexible pipe attracting from supply and discharge flow structure 1 be as long as increasing by three defaecations can shunt, but cuboid template 18 heats up, cooling, cooling speed are all improved.Especially cooling velocity, brought up to 10 minutes from 20 minutes, had improved complete machine production efficiency.
When the inversion of oil cylinder 5, mould bases plate 3 separates lower bolster 13, because monolateral two vertical vertical limiting plate 11 outer surface spacing are only slightly less than cuboid template 18 width, contour four block boards 10 and four vertical vertical limiting plates 11 also play the effect of width guide rail guide and limit to lower bolster 13 liftings, and the vertical facade longitudinal pitch of the ladder of four contour block boards 10 and four stepped plates 11 is also very little, equally also play the guide rail guide and limit effect of length direction.