CN101786148B - Centrifugal pipe casting machine varied diameter metal bellmouthed core - Google Patents
Centrifugal pipe casting machine varied diameter metal bellmouthed core Download PDFInfo
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- CN101786148B CN101786148B CN2009100914384A CN200910091438A CN101786148B CN 101786148 B CN101786148 B CN 101786148B CN 2009100914384 A CN2009100914384 A CN 2009100914384A CN 200910091438 A CN200910091438 A CN 200910091438A CN 101786148 B CN101786148 B CN 101786148B
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Abstract
The invention discloses a centrifugal pipe casting machine varied diameter metal bellmouth core, comprising a core mould forming an insert-type structure by a plurality of modeling blocks, all the outer surfaces of the modeling blocks are spliced to constitute a bellmouth inner revolving-shaped surface of a cast iron pipe; the modeling block of the core mould is provided with a cooling liquid channel on which an inlet and an outlet are arranged; the core mould is supported on a spindle guide device so as to be moveably connected with a spindle in a radial direction of the spindle, when the formed modeling block is contracted towards the center in the radial direction, the outer diameter of the core mould is decreased so that the model can be taken out; the spindle is provided with a driving device, one end of a transmission mechanism is connected with the modeling block and the other end thereof is connected with the driving device so that the modeling block moves along the guide device. Replacing traditional bellmouth sand core, the bellmouth core can be repeatedly used, simplify the production technology of cast pipe, prolong the service life of the core mould, reduce the consumption of raw material and lower cost, and feeding cooling water to the formed modeling block can quicken the cooling formation of cast pipe, thereby reducing thermal deformation of the modeling block, enhancing dimensional precision of cast and raising the production efficiency of centrifuge.
Description
Technical field
The present invention relates to a kind of centrifugal tube casting machine diameter metal bellmouth core.Specifically, be the bellmouth inner chamber forming metal core that is used for producing ductile iron pipe.
Background technology
The current bellmouth core that is used for producing ductile iron pipe all is to adopt core.This traditional bell socket sand core core manufacturing craft commonly used has cold-box process, hot box process and resin self-setting sand method.Fuse all is disposable, can not reuse but generally speaking.
Cold-box process coremaking is that resin sand is inserted core box, and the method for core is processed in the sclerosis of then blowing.Cold-box process coremaking main technique flow process is; Sand drier is dried damp sand, and puddle mixer mixes system by a certain percentage to raw material, and core shooter adopts compressed air that core is injected core box at a high speed; Make full use of the function of core sand and the comprehensive function of pressure reduction; Make solid, the curing of blowing of core, take out, obtain core by playing the core machine.Thermal core casing core manufacturing; The core sand that uses liquid thermosetting resinoid bond and catalyst to be configured to; Insert in the core box that is heated to uniform temperature, resin and curing agent react and harden under the heat effect of core box, process core through about several seconds to one minute time like this.Furan resin self curing sand coremaking is binding agent and curing agent effect at normal temperatures, chemical reaction takes place and solidifies and processes core.In sum, traditional bell socket sand core making needs to build a special coremaking workshop, and the core of making can't be reused, and has so just increased the production cost of cast tube; Occur easily also in the core manufacture process that fuse is soft, sclerosis is not enough, fuse is broken, sand core strength is low, manufacturability issues such as pore is arranged, such core influences the machining accuracy of cast tube easily.
Summary of the invention
The objective of the invention is to improve the deficiency of prior art, provide a kind of can reusable centrifugal tube casting machine diameter metal bellmouth core.Use this diameter metal core can reduce the core workshop of spun cast pipe factory, reduce investment; Reduce production costs, improve the quality of cast tube bellmouth, simplify production technology, improve the production efficiency of centrifuge.
The objective of the invention is to realize like this:
A kind of spun cast pipe diameter metal bellmouth core comprises:
One core, this core are the formula of the inserting structures that is made up of some model block, and the whole amalgamations of the outer surface of each model block are together the time; The jatharapanvartanasana surface that the bellmouth inner chamber of the cast iron pipe that constitutes and will pour into a mould matches; When the shaping mould piece when shrink at the center, the core external diameter is diminished, thereby takes out model;
One cooling device, it is the cooling passage that in each said core model block, is equipped with, the import and export that this passage is provided with said cooling passage are communicated with coolant supply apparatus;
One main shaft, it is the support component of said core, is provided with a guider above that; Through this guider make said core can along moving radially of main shaft be connected with main shaft; Make radially when shrink at the center, the core external diameter to be diminished, thereby take out model when shaping mould piece edge is said;
One drive unit is a rotating driving device, and it is arranged on the said main shaft;
One transmission mechanism, an end of said transmission mechanism is connected with each said model block, and its other end is connected with parts that rotate on the said drive unit, and makes said model block move along said guider.
Said core can be by at least two sector crosssection model block with etc. the wedge shape section model block two group model block gaps of quantity arrange and to constitute that the arcuate surface that each model block has constitutes said jatharapanvartanasana surface when piecing together.
An also sheathed fixing cover plate on said main shaft, its external diameter be greater than maximum internal diameter after the strutting of adjacent with it model block, so that cover said guide pillar device within the model block in order to avoid spatter potting syrup.
Said guider can be two groups of guide pillar devices that on this main shaft, set firmly; The model block total quantity of the quantity of every group of said guide pillar device and said core is corresponding; Each guide pillar device in two groups of said guide pillar devices is axially aligning one by one, and two guide pillar devices that align are connected on the said model block; Said guide pillar device comprises the guide that is installed on the said main shaft and an end is slidingly connected this guide and the other end is connected the sliding part on the said model block.
Two guide pillar devices that are installed in corresponding each model block on the said main shaft in two groups of said guide pillar devices become a pair of guide pillar device, each to the guide pillar device be divided at intervals two groups right, respectively with the corresponding connection of described two group model pieces,
Wherein one group of right guide is a guide pillar, and said sliding part is a fairlead, and the right said guide of another group is a fairlead, and said sliding part is a guide pillar, and said fairlead is set on the said guide pillar; Perhaps,
Two groups of right said guides are guide pillar, and said sliding part is fairlead, and said fairlead is set on the said guide pillar; Perhaps,
Two groups are fairlead to said guide, and said sliding part is guide pillar, and said fairlead is set on the said guide pillar.
Every group of each said guide pillar device evenly distributes at circumferencial direction with respect to said main shaft.
In the optimal technical scheme; Said guide and sliding part in the said guide pillar device are hollow structural members; Sealing device is set therebetween; Constitute the cooling fluid transfer passage of said cooling device with this, the said cooling passage that is provided with in the said cooling fluid transfer passage in said sliding part or the guide and the said model block is communicated with hermetically.
The said cooling fluid transfer passage of the said guide pillar device of each in said every group is connected; And/or,
The said cooling fluid transfer passage of two groups of said guide pillar devices is connected; And a cooling fluid transfer passage of one group of said guide pillar device constitutes said cooling liquid inlet for total mouthful; Total mouthful of another cooling fluid transfer passage is communicated with for total mouthful with cooling fluid transfer passage that another of organizing said guide pillar device constitutes cooling liquid inlet, the said cooling liquid outlet of the total mouth formation of another cooling passage of this another group guide pillar device.
The cooling fluid transfer passage that is communicated with said two groups of guide pillar devices is arranged on the said main shaft.
Said rotating driving device can be the screw thread rotation oil cylinder mechanism that is installed on the said main shaft; It comprises swing cylinder barrel and piston; The middle part of wherein said swing cylinder barrel and said main shaft constitutes a confined space; The two ends of this confined space are provided with oil-in and oil-out and establish adapter in use to be connected hydraulic circuit on it; The middle part of this confined space is provided with said piston, utilizes the worm drive structure to be connected between swing cylinder barrel and the piston, also is to utilize the worm drive structure to be connected between main shaft and the piston; On the hinged said swing cylinder barrel of one end of said connecting rod; Hermetically-sealed construction is set to form said seal cavity between said piston and the said main shaft and between said piston and the said swing cylinder barrel.
Said rotating driving device also can be mounted in oscillating cylinder, motor and the gear drive on the main shaft, and its output shaft constitutes the said parts that rotatablely move.
With the said rotating driving device coupling that is the screw thread rotation oil cylinder mechanism; One end of said main shaft is the bigger big end of diameter; Also comprise an end cap; From the big end of this main shaft order on this main shaft one group of said guide pillar device, said rotating driving device, said end cap and a termination nut are set, another are set on said end cap organize said guide pillar device, and be respectively equipped with spline and the keyway that is complementary on the corresponding main shaft of said end cap He on this end cap axis hole; Less end at main shaft is provided with screw thread, and said termination nut is spirally connected.
With screw be set on the corresponding main shaft of said rotating driving device be connected as the said piston in the rotating driving device of screw thread rotation oil cylinder mechanism.
Said transmission mechanism can be connecting rod; Its quantity is corresponding with said model block total quantity; The one end hinged one said model block of each said connecting rod; The parts that rotate on the other end and the said drive unit are hinged, make this transmission mechanism form slider-crank mechanism with said rotating driving device and said model block.
Said transmission mechanism also can be with the parts that rotate on the said drive unit and any transmission mechanism that the said model block of doing to move radially links together, and for example, can be Geneva mechanism, cam mechanism etc.
Said main shaft can be hollow shaft, and the cooling fluid transfer passage that is communicated with said two groups of guide pillar devices is arranged in the hollow and hermetic cavity chamber of said main shaft;
Said screw thread rotation oil cylinder mechanism, said oil-in and the adapter on the oil-out on it can be located in the middle cavity of this main shaft, are used to connect oil supply system along axially drawing from an end of said main shaft of main shaft; Perhaps,
An optimal technical scheme is; Corresponding screw thread rotation oil cylinder mechanism is as driving mechanism; On the hollow inwall of said main shaft, fixedly install the mold insert of a tubular; The oil circuit groove is set, to offering oil-in on should the main shaft wall of oil circuit groove respective ends and oil-out is communicated with oil-in and the oil-out that the two ends, sealing space of rotary oil cylinder mechanism are provided with on the outer wall of this mold insert; The cooling passage that is communicated with said two groups of guide pillar devices is arranged in the spindle cavity in the said tubular mold insert.
In such scheme, oil circuit and the corresponding connection of cooling passage that the said cooling liquid outlet that is provided with on the port of the inboard said oil circuit groove of said mold insert and the said guide pillar device can be all be provided with an oil path block that is arranged on said main shaft one end.The import of cooling fluid transfer passage and outlet and oil supply system passage after the respective channel of drawing on the main shaft can with oil circuit or the corresponding connection of cooling passage on the oil path block on being arranged on main shaft.Like this can be so that the structure of this bellmouth core is compact more.
Between said main shaft and said swing cylinder barrel, bearing arrangement is set, said bearing arrangement is preferably angular contact ball bearing.
Centrifugal tube casting machine diameter metal bellmouth core provided by the invention has the following advantages: because the present invention's employing is metal bellmouth core; Through the combination of two group model pieces and driving mechanism and the parts such as guide pillar, guide pin bushing that drive this two group models piece motion; Can realize to take out after the contraction, cast of bellmouth core, be the bell socket sand core that alternative tradition is used thus, and can reuse; Simplified the cast tube production technology; Prolong the service life of core, reduced raw-material consumption, reduced production cost.Further, in said model block and even guide pillar, cavity is set, wherein leads to cooling fluid, can quicken the cooling forming of cast tube, reduce the thermal deformation of model block, improve the dimensional accuracy of foundry goods, the production efficiency of centrifuge is further improved.Employing places the inner spiral pendulous device of each forming model piece; Reduced the axial dimension of mechanism; Adopt the length guide pillar to be connected fan-shaped forming model piece and wedge shape forming model piece respectively, can effectively reduce the radial dimension of mechanism, so with the length connecting rod; Make mechanism compact more, saved the space of equipment.
Below in conjunction with accompanying drawing the present invention is described in further detail:
Description of drawings
Fig. 1 is the axial section structural representation under the centrifugal tube casting machine diameter metal bellmouth core stretched condition provided by the invention;
Fig. 2 is the perspective view of centrifugal tube casting machine diameter metal bellmouth core provided by the invention;
Fig. 3 demonstrates the sectional structure sketch map under each model block contraction state for the C-C of bellmouth core shown in Figure 1 analyses and observe;
Fig. 4 analyses and observe the structural representation under the stretched condition for the C-C of bellmouth core shown in Figure 1;
Fig. 5 is the B-B sectional structure sketch map of Fig. 1;
Fig. 6 is the axial section structural representation under the centrifugal tube casting machine diameter metal bellmouth core stretched condition of another structure provided by the invention;
Fig. 7 is the structural representation under each model block stretched condition of bellmouth core shown in Figure 6;
Fig. 8 is the structural representation under each model block contraction state of bellmouth core shown in Figure 6.
The specific embodiment
Like Fig. 1, Fig. 2 and shown in Figure 3, spun cast pipe diameter metal bellmouth core provided by the invention, it comprises:
One core; This core is the formula of the inserting structure that is made up of some model block, and the whole amalgamations of the outer surface of each model block are together the time, constitutes the jatharapanvartanasana surface that the bellmouth inner chamber with the cast iron pipe that will pour into a mould matches; In the present embodiment, the number of fan-shaped model block and wedge shape model block is 5.When the shaping mould piece when shrink at the center, the core external diameter is diminished, thereby takes out model;
One cooling device, its be the cooling passage that in each said core model block, is equipped with 1., 4., this passage is provided with to import and export and is communicated with liquid coolant sources; For example can be connected with coolant supply apparatus through flexible pipe.
One main shaft, it is the support component of said core, is made up of hollow spindle 20, end cap 8 and mold insert 6, on main shaft, is provided with a guider, through this guider make said core can along moving radially of main shaft be connected with main shaft.
Said guider can be two groups of guide pillar devices that on this main shaft, set firmly; The model block total quantity of the quantity of every group of said guide pillar device and said core is corresponding; Every group of each guide pillar evenly distributes with respect to the axis of said main shaft in a circumferential direction; Each guide pillar device in two groups of said guide pillar devices is axially aligning one by one, and two guide pillar devices that align are connected on the said model block; Said guide pillar device comprises the guide that is installed on the said main shaft and an end is slidingly connected this guide and the other end is connected the sliding part on the said model block.Two guide pillar devices that are installed in corresponding each model block on the said main shaft in two groups of said guide pillar devices become a pair of guide pillar device, each to the guide pillar device be divided at intervals two groups right, respectively with the corresponding connection of described two group model pieces.
Wherein one group of right guide is a guide pillar, and said sliding part is a fairlead, and the right said guide of another group is a fairlead, and said sliding part is a guide pillar, and said fairlead is set on the said guide pillar;
One drive unit, this drive unit are a rotating driving device, and it is arranged on the said main shaft; In the present embodiment, this rotating driving device is the spiral swinging cylinder mechanism.
Concrete, an end on the right side of said hollow spindle 20 is the bigger big end of diameter, in proper order one group of said guide pillar, spiral swinging cylinder mechanism, end cap 8 and termination nut is set on it left from this big end, another is set on end cap 8 organizes said guide pillar.On the hollow spindle with the corresponding position of said spiral swinging cylinder mechanism be provided with said piston on the internal thread screw that is complementary and is connected; Be respectively equipped with spline and the screw thread that is complementary with the corresponding position of said end cap with the corresponding position of end cap axis hole, with this guarantee on the hollow spindle with end cap on the parallel and equidistance of corresponding every group of guide pillar.
The structure of this cooling device can be like Fig. 1, shown in 5 particularly; Each guide pillar 5,12 in said two groups of guide pillar devices is hollow structure; Its cavity constitutes the cooling fluid transfer passage of said cooling device; The cooling fluid transfer passage of each guide pillar in said every group is connected, and the cooling fluid transfer passage of two groups of guide pillars and the cooling duct UNICOM on the said model block are in order to the cooling jig piece.3. the cooling fluid transfer passage of one group of guide pillar gathers into the cooling fluid general import, and 6. the cooling fluid transfer passage of another group guide pillar gathers into the cooling fluid general export.
The concrete syndeton of model block and guide pillar can be: as shown in Figure 1; Said cooling passage in said fan-shaped model block 2 and the wedge shape model block 15 1. and two ends 4. be provided with liquid in-out mouth with respect to hollow spindle 20 radial direction, and be communicated with cooling fluid transfer passage that hollow guide pillar guide pin bushing mechanism constitutes; On the liquid in-out mouth of fan-shaped model block 2 fairlead 5a is set; Fairlead 5a on the liquid inlet and outlet (as shown in Figure 5) on the said fan-shaped model block 2 is set in and is fixed in end cap 8 and the hollow spindle 20 big outsides of going up corresponding said guide pillar 5 of holding, and fairlead 5a and guide pillar 5 adjacently situated surfaces are provided with sealing device; Said liquid in-out mouth on the said wedge shape model block 15 sets firmly guide pillar 12, and sheathed fairlead 12a is installed on end cap 8 and the hollow spindle 20 big ends on it, and with guide pillar 5 alternate settings, the adjacently situated surfaces of fairlead 12a and guide pillar 12 is provided with sealing device 10.Between wedge shape model block 15 and lead 12, sealing device 18 is set, between end cap 8 and guide pillar 5, also is provided with sealing device.
Spiral swinging cylinder mechanism on the said hollow spindle 20 is arranged on two groups of hollow spindles 20 between the guide pillar device, and it comprises swing cylinder barrel 11, piston 1 etc.; The middle part of wherein swinging cylinder barrel 11 and hollow spindle 20 constitutes a confined space, and is separated by piston 1, and the seal cavity of piston 1 both sides is provided with oil-in and 5. 7. is connected hydraulic circuit respectively with oil-out; The piston 1 at this middle part is a cylindrical member; Be respectively equipped with the opposite screw thread of rotation direction on its inner and outer wall, screw thread on said piston 1 inwall and the coupling of the screw thread on the hollow spindle 20 can move with respect to the forward and reverse rotation of hollow spindle; Screw thread on the outer wall and the screw thread coupling of swinging on cylinder barrel 11 inwalls; Can move with respect to swing cylinder barrel forward and reverse rotation,, make swing cylinder barrel 11 rotate when piston 1 when the hollow spindle rotation is moved in the effect lower edge of hydraulic oil.Between piston 1 and hollow spindle 20 and piston 1 and swing cylinder barrel 11, be provided with rotary seal 9 and 26, on hollow spindle 20 and end cap 8 and swing cylinder barrel 11 adjacent contact faces, be provided with rotary sealing appts 19.Between swing cylinder barrel 11 and hollow spindle 20 and swing cylinder barrel 11 and end cap 8, angular contact ball bearing 24 is set.
The said screw thread that relates on the above-mentioned spiral oscillating oil cylinder all can be a steep-lead thread.Thus, make when said oil inlet and outlet has hydraulic oil to flow, can promote by the forward and reverse rotation of moveable cylinder.This is a prior art, steep-lead thread is not further given unnecessary details at this.
For the driving of spiral swinging cylinder mechanism, also can be located in the middle cavity of this main shaft on it into and out of oil duct, and can draw the connection hydraulic circuit from the port of an end of said main shaft.Hollow spindle inside is except that being provided with respectively the cooling fluid that links to each other with fairlead with guide pillar into and out of transfer passage; Also be provided with the hydraulic oil turnover oil duct that links to each other with oscillating oil cylinder piston two ends; Make that the structural design of this bellmouth core is compact more, neat, structure is more reasonable.
The concrete structure that oil circuit and water route are set in hollow spindle can be:
On the hollow inwall of hollow spindle 20, fixedly install the hollow spindle mold insert 6 of tubular; The oil circuit groove is set 2. on the outer wall of hollow spindle mold insert 6; On the hollow spindle wall, offer hydraulic fluid port and 7. 2. link up, offer hydraulic fluid port and 5. link up with the right chamber of rotary oil cylinder with the oil circuit groove.This hydraulic fluid port 5., 7. with the oil path block 22 that is arranged on the hollow spindle right-hand member and connects firmly through differential 21 and hollow spindle on the oil circuit that is provided be connected.Every group of said guide pillar device cavity separately all is communicated with; And be communicated with respectively a cooling fluid general import pipeline 3. with a cooling fluid general export pipeline 6.; The general import pipeline 3. with the hollow axial wall of said hollow spindle on the hole that is provided with corresponding; The inner shafts of this hole and hollow spindle mold insert 6 is to hole link, the general export pipeline 6. with the one group of axial channel UNICOM that is arranged on the big end of hollow spindle.The axial channel of the turnover pipe of these two cooling fluids is communicated with coolant channels on the said oil path block 22 that sets firmly at the hollow spindle other end.Shown in the arrow among Fig. 1; Cooling fluid gets into the axial passage of mold insert 6 inside in the hollow spindle through the passage on the oil path block 22; 3. get into through cooling fluid general import pipeline in one group of guide pillar device delivery passage in left side; Then get in the model block cooling passage 1. and 4., get into one group of guide pillar device delivery passage on right side again, and from be located on the hollow spindle 20 axially on the general export pipeline 6. and on the oil path block 22 corresponding passage discharge and backwater.
This spun cast pipe diameter metal bellmouth core also comprises some transmission mechanisms; Said transmission mechanism is a connecting rod; Its quantity is corresponding with said model block total quantity; One end of each said connecting rod 4, the 17 said model block that is articulated and connected; It is hinged that the parts that rotate on the other end and the said drive unit are promptly swung cylinder barrel 11, makes to form slider-crank mechanism, and the direction of motion that makes described guiding mechanism be used for the limited model piece is radially or has other movement locus of enough components in the radial direction.
Particularly; This transmission mechanism comprises fan-shaped model block connecting rod 4 and wedge shape model block connecting rod 17; Fan-shaped model block connecting rod 4 one ends are hinged through fan-shaped model block pin 3 and fan-shaped model block 2; The other end is hinged with swing cylinder barrel 11 through short cylindrical pin 14, and wedge shape model block connecting rod 17 1 ends are hinged through wedge shape module pin 13 and wedge shape model block 15, and the other end is hinged with swing cylinder barrel 11 through short cylindrical pin 14.The connecting rod that connects fan-shaped model block 2 connects the length of the connecting rod of said wedge shape model block 15 will be grown, and the connecting rod that length is different drives each model block along the guide pillar different distances of moving, and is as shown in Figure 3.
This bellmouth core and core flange 16 are connected firmly through counter flange 25 and bolt at the big end of hollow spindle 20, this end of hollow spindle 20 through bolt, two semicirclely separate cutting ferrule 23, differentials 21 connect firmly oil path block 22 and hollow spindle.
Separating cutting ferrule 23 is two semicircular ring, and it is convenient to dismounting.
The course of work of the present invention is: before pouring into a mould cast tube 30, this bellmouth core is placed in the pipe die 40, connect oil circuit and make each model block distending (as shown in Figure 4), its outside constitute and the identical surface of the bellmouth inner chamber wall of cast iron pipe, pour into a mould then.After treating that the cast tube moulding finishes; Hydraulic oil promotes 1 rotation of spiral piston and moves; Swing cylinder barrel 11 will rotate; Drive two kinds of model block through the connecting rod that differs in size and inwardly shrink (like Fig. 3, shown in Figure 5), make former cause flat back die type piece 2 and wedge shape model block 15 be spaced the great circle that is shaped as rule of the cross section of formation, become a multi-section circular arc that only is spliced into and be interrupted irregular " roundlet " that constitutes by each fan-shaped model block; Make the radial dimension of core mechanism dwindle, thereby make the metal core be able to the demoulding.
Be applied to the diameter metal bellmouth core of centrifugal tube casting machine; The core that constitutes by the same number of fan-shaped model block 2 and wedge shape model block 15 separation; Each model block can be along hollow said guide pillar device radial contraction, and hollow guide pillar device is the support and the guiding of pattern drawing piece both, the double again cooling fluid transfer passage of doing shaping mould type piece; Make in each forming model piece 2,15 and can both in time obtain cooling; This can not only guarantee the temperature stabilization of core model block, and high temperature liquid iron is cooled off rapidly, improves productive temp.The different connecting rod of length 4,17 drives separately model block 2,15 along the guide pillar different distances of moving; Thereby; Make the great circle of a rule that is made up of model block become less many circular arcs assembly, the radial dimension of mechanism dwindles, and makes the metal core be able to the demoulding.The motion of connecting rod 4,17 is driven by the overcoat 11 of the spiral oscillating oil cylinder that is positioned at the core axle center.This hollow spindle 20 links with the guide pillar of model block, and hollow spindle 20 inside are provided with the cooling fluid access way that links to each other with the guide pillar device respectively 3., 6. and with hydraulic oil that spiral oscillating oil cylinder piston both sides link pass in and out oil duct 5., 7..Hollow guide pillar with seal hollow spindle and being connected respectively of forming model piece with sliding ring 10; Hollow spindle seals with rotating seal ring 19 with the cooperation place of swinging cylinder barrel 11 with swing cylinder barrel 11 and end cap 8; The two ends of intermediate connecting rod adopt straight pin 3,13,14 to connect respectively, and hollow spindle 20 adopts angular contact ball bearing 24 to support with the junction of swing cylinder barrel 11.Core flange 16 combines as a whole with hollow spindle 20 through oil path block 22, the counter flange 25 of hollow spindle one side, and the centrifuge pipe die can drive the diameter metal core and rotate with pipe die 40 when rotating, to realize centrifugal casting process.In-house for preventing that iron liquid is splashed into core, the other end of core is provided with splashproof cover plate 7.Its external diameter is greater than internal diameter maximum after the strutting of adjacent with it model block, so that cover said guide pillar and end cap within the model block in order to avoid spatter potting syrup.After the cast tube moulding finished, hydraulic oil promoted spiral piston 1 and rotates when moving, and swing cylinder barrel 11 will rotate, and drive two kinds of model block through connecting rod 4,17 and inwardly shrink, and realize the reducing demoulding.
Be depicted as the another kind of structure of bellmouth core provided by the invention like Fig. 6,7 and 8; The difference of itself and bellmouth core shown in Figure 1 is the guide pillar device; Different ground with previous embodiment; Two groups of right said guides in the present embodiment are guide pillar, and said sliding part is fairlead, and said fairlead is set on the said guide pillar; The sliding part that wherein connects on two kinds of model block in every group of guide pillar device all is hollow fairlead 51; Accordingly; On the hollow spindle 20 and the guide that sets firmly on the end cap 8 all be hollow guide pillar 52, guide pillar 52 is plugged in the fairlead 51, and hermetically-sealed construction is set therebetween.Fan-shaped in the present embodiment model block 2 respectively has four with wedge shape model block 15.The guide pillar device of this structure, relatively simple for structure, be suitable for the less occasion of model block quantity.
Same, also can be two groups said guide is fairlead, said sliding part is guide pillar, and said fairlead is set on the said guide pillar.
Claims (30)
1. spun cast pipe diameter metal bellmouth core is characterized in that comprising:
One core, this core are the formula of the inserting structures that is made up of some model block, and the whole amalgamations of the outer surface of each model block are together the time; The jatharapanvartanasana surface that the bellmouth inner chamber of the cast iron pipe that constitutes and will pour into a mould matches; When the shaping mould piece when shrink at the center, the core external diameter is diminished, thereby takes out model;
One cooling device, it is the cooling passage that in each said core model block, is equipped with, this passage is provided with the entrance point and the port of export of said cooling passage, is used for being communicated with coolant supply apparatus;
One main shaft, it is the support component of said core, is provided with a guider above that; Through this guider make said core can along moving radially of main shaft be connected with main shaft; Radially when shrink at the center, the core external diameter is diminished when shaping mould piece edge is said, thereby take out model;
One drive unit is a rotating driving device, and it is arranged on the said main shaft;
One transmission mechanism, an end of said transmission mechanism is connected with each said model block, and the parts that rotate on its other end and the said drive unit are connected, and make said model block move along said guider.
2. spun cast pipe diameter metal bellmouth core according to claim 1; It is characterized in that: said core by at least two sector crosssection model block with etc. the wedge shape section model block two group model block gaps of quantity arrange and to constitute that the arcuate surface that each model block has constitutes said jatharapanvartanasana surface when piecing together.
3. spun cast pipe diameter metal bellmouth core according to claim 1 and 2; It is characterized in that: the two group guide pillar devices of said guider on this main shaft, setting firmly; The model block total quantity of the quantity of every group of said guide pillar device and said core is corresponding; Each guide pillar device in two groups of said guide pillar devices is axially aligning one by one, and two guide pillar devices that align are connected on the said model block; Said guide pillar device comprises the guide that is installed on the said main shaft and an end is slidingly connected this guide and the other end is connected the sliding part on the said model block.
4. spun cast pipe diameter metal bellmouth core according to claim 3; It is characterized in that: two guide pillar devices that are installed in corresponding each model block on the said main shaft in two groups of said guide pillar devices become a pair of guide pillar device; Each to the guide pillar device be divided at intervals two groups right; Respectively with the corresponding connection of described two group model pieces
Wherein one group of right guide is a guide pillar, and said sliding part is a fairlead, and the right said guide of another group is a fairlead, and said sliding part is a guide pillar, and said fairlead is set on the said guide pillar; Perhaps,
Two groups of right said guides are guide pillar, and said sliding part is fairlead, and said fairlead is set on the said guide pillar; Perhaps,
Two groups are fairlead to said guide, and said sliding part is guide pillar, and said fairlead is set on the said guide pillar.
5. spun cast pipe diameter metal bellmouth core according to claim 3 is characterized in that: every group of each said guide pillar device evenly distributes at circumferencial direction with respect to said main shaft; Perhaps,
Said guide and sliding part in the said guide pillar device are hollow structural members; Sealing device is set therebetween; Constitute the cooling fluid transfer passage of said cooling device with this, the said cooling passage that is provided with in the said cooling fluid transfer passage in said sliding part or the guide and the said model block is communicated with hermetically.
6. spun cast pipe diameter metal bellmouth core according to claim 4 is characterized in that: every group of each said guide pillar device evenly distributes at circumferencial direction with respect to said main shaft; Perhaps,
Said guide and sliding part in the said guide pillar device are hollow structural members; Sealing device is set therebetween; Constitute the cooling fluid transfer passage of said cooling device with this, the said cooling passage that is provided with in the said cooling fluid transfer passage in said sliding part or the guide and the said model block is communicated with hermetically.
7. spun cast pipe diameter metal bellmouth core according to claim 5 is characterized in that: the said cooling fluid transfer passage of the said guide pillar device of each in said every group is connected; And/or,
The said cooling fluid transfer passage of two groups of said guide pillar devices is connected; And a cooling fluid transfer passage of one group of said guide pillar device constitutes said cooling liquid inlet for total mouthful; Total mouthful of another cooling fluid transfer passage is communicated with for total mouthful with cooling fluid transfer passage that another of organizing said guide pillar device constitutes cooling liquid inlet, the said cooling liquid outlet of the total mouth formation of another cooling passage of this another group guide pillar device.
8. spun cast pipe diameter metal bellmouth core according to claim 3; It is characterized in that: an end of said main shaft is the bigger big end of diameter; Also comprise an end cap; From the big end of this main shaft order on this main shaft one group of said guide pillar device, said rotating driving device, said end cap and a termination nut are set, another are set on said end cap organize said guide pillar device, and be respectively equipped with spline and the keyway that is complementary on the corresponding main shaft of said end cap He on this end cap axis hole; Less end at said main shaft is provided with screw thread, and said termination nut is spirally connected.
9. spun cast pipe diameter metal bellmouth core according to claim 4; It is characterized in that: an end of said main shaft is the bigger big end of diameter; Also comprise an end cap; From the big end of this main shaft order on this main shaft one group of said guide pillar device, said rotating driving device, said end cap and a termination nut are set, another are set on said end cap organize said guide pillar device, and be respectively equipped with spline and the keyway that is complementary on the corresponding main shaft of said end cap He on this end cap axis hole; Less end at said main shaft is provided with screw thread, and said termination nut is spirally connected.
10. spun cast pipe diameter metal bellmouth core according to claim 5; It is characterized in that: an end of said main shaft is the bigger big end of diameter; Also comprise an end cap; From the big end of this main shaft order on this main shaft one group of said guide pillar device, said rotating driving device, said end cap and a termination nut are set, another are set on said end cap organize said guide pillar device, and be respectively equipped with spline and the keyway that is complementary on the corresponding main shaft of said end cap He on this end cap axis hole; Less end at said main shaft is provided with screw thread, and said termination nut is spirally connected.
11. spun cast pipe diameter metal bellmouth core according to claim 6; It is characterized in that: an end of said main shaft is the bigger big end of diameter; Also comprise an end cap; From the big end of this main shaft order on this main shaft one group of said guide pillar device, said rotating driving device, said end cap and a termination nut are set, another are set on said end cap organize said guide pillar device, and be respectively equipped with spline and the keyway that is complementary on the corresponding main shaft of said end cap He on this end cap axis hole; Less end at said main shaft is provided with screw thread, and said termination nut is spirally connected.
12. spun cast pipe diameter metal bellmouth core according to claim 6, it is characterized in that: the cooling fluid transfer passage that is communicated with said two groups of guide pillar devices is arranged on the said main shaft.
13. spun cast pipe diameter metal bellmouth core according to claim 1; It is characterized in that: said rotating driving device is the screw thread rotation oil cylinder mechanism that is installed on the said main shaft; It comprises swing cylinder barrel and piston; The middle part of wherein said swing cylinder barrel and said main shaft constitutes a confined space, and the two ends of this confined space are provided with oil-in and oil-out and establish adapter in use to be connected hydraulic circuit on it, and the middle part of this confined space is provided with said piston; Utilizing the worm drive structure to be connected between swing cylinder barrel and the piston, also is to utilize the worm drive structure to be connected between main shaft and the piston; On the hinged said swing cylinder barrel of one end of one transmission mechanism; Hermetically-sealed construction is set to form said seal cavity between said piston and the said main shaft and between said piston and the said swing cylinder barrel.
14. spun cast pipe diameter metal bellmouth core according to claim 2; It is characterized in that: said rotating driving device is the screw thread rotation oil cylinder mechanism that is installed on the said main shaft; It comprises swing cylinder barrel and piston; The middle part of wherein said swing cylinder barrel and said main shaft constitutes a confined space, and the two ends of this confined space are provided with oil-in and oil-out and establish adapter in use to be connected hydraulic circuit on it, and the middle part of this confined space is provided with said piston; Utilizing the worm drive structure to be connected between swing cylinder barrel and the piston, also is to utilize the worm drive structure to be connected between main shaft and the piston; On the hinged said swing cylinder barrel of one end of one transmission mechanism; Hermetically-sealed construction is set to form said seal cavity between said piston and the said main shaft and between said piston and the said swing cylinder barrel.
15. spun cast pipe diameter metal bellmouth core according to claim 3; It is characterized in that: said rotating driving device is the screw thread rotation oil cylinder mechanism that is installed on the said main shaft; It comprises swing cylinder barrel and piston; The middle part of wherein said swing cylinder barrel and said main shaft constitutes a confined space, and the two ends of this confined space are provided with oil-in and oil-out and establish adapter in use to be connected hydraulic circuit on it, and the middle part of this confined space is provided with said piston; Utilizing the worm drive structure to be connected between swing cylinder barrel and the piston, also is to utilize the worm drive structure to be connected between main shaft and the piston; On the hinged said swing cylinder barrel of one end of one transmission mechanism; Hermetically-sealed construction is set to form said seal cavity between said piston and the said main shaft and between said piston and the said swing cylinder barrel.
16. spun cast pipe diameter metal bellmouth core according to claim 4; It is characterized in that: said rotating driving device is the screw thread rotation oil cylinder mechanism that is installed on the said main shaft; It comprises swing cylinder barrel and piston; The middle part of wherein said swing cylinder barrel and said main shaft constitutes a confined space, and the two ends of this confined space are provided with oil-in and oil-out and establish adapter in use to be connected hydraulic circuit on it, and the middle part of this confined space is provided with said piston; Utilizing the worm drive structure to be connected between swing cylinder barrel and the piston, also is to utilize the worm drive structure to be connected between main shaft and the piston; On the hinged said swing cylinder barrel of one end of one transmission mechanism; Hermetically-sealed construction is set to form said seal cavity between said piston and the said main shaft and between said piston and the said swing cylinder barrel.
17. spun cast pipe diameter metal bellmouth core according to claim 5; It is characterized in that: said rotating driving device is the screw thread rotation oil cylinder mechanism that is installed on the said main shaft; It comprises swing cylinder barrel and piston; The middle part of wherein said swing cylinder barrel and said main shaft constitutes a confined space, and the two ends of this confined space are provided with oil-in and oil-out and establish adapter in use to be connected hydraulic circuit on it, and the middle part of this confined space is provided with said piston; Utilizing the worm drive structure to be connected between swing cylinder barrel and the piston, also is to utilize the worm drive structure to be connected between main shaft and the piston; On the hinged said swing cylinder barrel of one end of one transmission mechanism; Hermetically-sealed construction is set to form said seal cavity between said piston and the said main shaft and between said piston and the said swing cylinder barrel.
18. spun cast pipe diameter metal bellmouth core according to claim 7; It is characterized in that: said rotating driving device is the screw thread rotation oil cylinder mechanism that is installed on the said main shaft; It comprises swing cylinder barrel and piston; The middle part of wherein said swing cylinder barrel and said main shaft constitutes a confined space, and the two ends of this confined space are provided with oil-in and oil-out and establish adapter in use to be connected hydraulic circuit on it, and the middle part of this confined space is provided with said piston; Utilizing the worm drive structure to be connected between swing cylinder barrel and the piston, also is to utilize the worm drive structure to be connected between main shaft and the piston; On the hinged said swing cylinder barrel of one end of one transmission mechanism; Hermetically-sealed construction is set to form said seal cavity between said piston and the said main shaft and between said piston and the said swing cylinder barrel.
19. spun cast pipe diameter metal bellmouth core according to claim 8; It is characterized in that: said rotating driving device is the screw thread rotation oil cylinder mechanism that is installed on the said main shaft; It comprises swing cylinder barrel and piston; The middle part of wherein said swing cylinder barrel and said main shaft constitutes a confined space, and the two ends of this confined space are provided with oil-in and oil-out and establish adapter in use to be connected hydraulic circuit on it, and the middle part of this confined space is provided with said piston; Utilizing the worm drive structure to be connected between swing cylinder barrel and the piston, also is to utilize the worm drive structure to be connected between main shaft and the piston; On the hinged said swing cylinder barrel of one end of one transmission mechanism; Hermetically-sealed construction is set to form said seal cavity between said piston and the said main shaft and between said piston and the said swing cylinder barrel.
20. spun cast pipe diameter metal bellmouth core according to claim 13; It is characterized in that: said transmission mechanism is a connecting rod; Its quantity is corresponding with said model block total quantity; The one end hinged one said model block of each said connecting rod, the parts that rotate on the other end and the said drive unit are hinged, make this transmission mechanism form slider-crank mechanism with said rotating driving device and said model block.
21. spun cast pipe diameter metal bellmouth core according to claim 5, it is characterized in that: said main shaft is a hollow shaft, and the cooling fluid transfer passage that is communicated with said two groups of guide pillar devices is arranged in the hollow and hermetic cavity chamber of said main shaft.
22. spun cast pipe diameter metal bellmouth core according to claim 7, it is characterized in that: said main shaft is a hollow shaft, and the cooling fluid transfer passage that is communicated with said two groups of guide pillar devices is arranged in the hollow and hermetic cavity chamber of said main shaft.
23. spun cast pipe diameter metal bellmouth core according to claim 12, it is characterized in that: said main shaft is a hollow shaft, and the cooling fluid transfer passage that is communicated with said two groups of guide pillar devices is arranged in the hollow and hermetic cavity chamber of said main shaft.
24. spun cast pipe diameter metal bellmouth core according to claim 5; It is characterized in that: said main shaft is a hollow shaft; Said screw thread rotation oil cylinder mechanism; Said oil-in and the adapter on the oil-out on it are located in the middle cavity of this main shaft, are used to connect oil supply system along axially drawing from an end of said main shaft of main shaft.
25. spun cast pipe diameter metal bellmouth core according to claim 8; It is characterized in that: said main shaft is a hollow shaft; Said screw thread rotation oil cylinder mechanism; Said oil-in and the adapter on the oil-out on it are located in the middle cavity of this main shaft, are used to connect oil supply system along axially drawing from an end of said main shaft of main shaft.
26. spun cast pipe diameter metal bellmouth core according to claim 5; It is characterized in that: said main shaft is a hollow shaft; On the hollow inwall of said main shaft, fixedly install the mold insert of a tubular; The oil circuit groove is set, to offering oil-in on should the main shaft wall of oil circuit groove respective ends and oil-out is communicated with oil-in and the oil-out that the two ends, sealing space of rotary oil cylinder mechanism are provided with on the outer wall of this mold insert; The cooling passage that is communicated with said two groups of guide pillar devices is arranged in the spindle cavity in the said tubular mold insert.
27. spun cast pipe diameter metal bellmouth core according to claim 8; It is characterized in that: said main shaft is a hollow shaft; On the hollow inwall of said main shaft, fixedly install the mold insert of a tubular; The oil circuit groove is set, to offering oil-in on should the main shaft wall of oil circuit groove respective ends and oil-out is communicated with oil-in and the oil-out that the two ends, sealing space of rotary oil cylinder mechanism are provided with on the outer wall of this mold insert; The cooling passage that is communicated with said two groups of guide pillar devices is arranged in the spindle cavity in the said tubular mold insert.
28., it is characterized in that: oil circuit and the corresponding connection of cooling passage that the said cooling liquid outlet that is provided with on the port of the inboard said oil circuit groove of said mold insert and the said guide pillar device all is provided with an oil path block that is arranged on said main shaft one end according to claim 25 or 26 described spun cast pipe diameter metal bellmouth cores.
29. spun cast pipe diameter metal bellmouth core according to claim 1 is characterized in that said passage two ends are provided with the import and export of said cooling fluid.
30. spun cast pipe diameter metal bellmouth core according to claim 3; It is characterized in that; An also sheathed fixing cover plate on said main shaft; Its external diameter is greater than internal diameter maximum after the strutting of adjacent with it model block, so that cover said guide pillar device within the model block in order to avoid spatter potting syrup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100914384A CN101786148B (en) | 2009-08-24 | 2009-08-24 | Centrifugal pipe casting machine varied diameter metal bellmouthed core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100914384A CN101786148B (en) | 2009-08-24 | 2009-08-24 | Centrifugal pipe casting machine varied diameter metal bellmouthed core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101786148A CN101786148A (en) | 2010-07-28 |
| CN101786148B true CN101786148B (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100914384A Expired - Fee Related CN101786148B (en) | 2009-08-24 | 2009-08-24 | Centrifugal pipe casting machine varied diameter metal bellmouthed core |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527976B (en) * | 2012-02-23 | 2013-09-11 | 新兴铸管股份有限公司 | Preparation process for compound sand core for centrifugal cast pipe socket |
| CN104858386A (en) * | 2015-06-03 | 2015-08-26 | 阳城县华王通用离心铸管厂 | Mould pipe protecting centrifugally cast thin-wall gray cast iron socket pipe against fracture |
| CN106698239A (en) * | 2016-12-13 | 2017-05-24 | 余深权 | Oil pressure jack guide pillar eccentric wheel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1025490A1 (en) * | 1981-08-14 | 1983-06-30 | Научно-исследовательский институт санитарной техники | Tube centrifugal casting method |
| CN2148617Y (en) * | 1993-02-09 | 1993-12-08 | 天水铸造机械总厂 | Automatic end cover system for horizontal centrifugal casting machine |
-
2009
- 2009-08-24 CN CN2009100914384A patent/CN101786148B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1025490A1 (en) * | 1981-08-14 | 1983-06-30 | Научно-исследовательский институт санитарной техники | Tube centrifugal casting method |
| CN2148617Y (en) * | 1993-02-09 | 1993-12-08 | 天水铸造机械总厂 | Automatic end cover system for horizontal centrifugal casting machine |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2005-349429A 2005.12.22 |
| JP特开平7-88608A 1995.04.04 |
| 张振军等.T型承口旋转抽芯整体发泡模具研究.《农业机械学报》.2000,第31卷(第3期),102-105. * |
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| CN101786148A (en) | 2010-07-28 |
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