CN114147198A - Nodular cast iron pipe die - Google Patents
Nodular cast iron pipe die Download PDFInfo
- Publication number
- CN114147198A CN114147198A CN202111551104.8A CN202111551104A CN114147198A CN 114147198 A CN114147198 A CN 114147198A CN 202111551104 A CN202111551104 A CN 202111551104A CN 114147198 A CN114147198 A CN 114147198A
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- cast iron
- iron pipe
- fixedly connected
- box
- pipe die
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- 229910001141 Ductile iron Inorganic materials 0.000 title claims abstract description 42
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 102
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 84
- 229910052742 iron Inorganic materials 0.000 claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 230000009467 reduction Effects 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 44
- 238000007906 compression Methods 0.000 claims description 44
- 238000005485 electric heating Methods 0.000 claims description 28
- 210000001503 joint Anatomy 0.000 claims description 22
- 238000001125 extrusion Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 15
- 239000003570 air Substances 0.000 description 42
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 13
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000008602 contraction Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 206010022979 Iron excess Diseases 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/02—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
- B22D13/023—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis the longitudinal axis being horizontal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
- B22D13/108—Removing of casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/12—Controlling, supervising, specially adapted to centrifugal casting, e.g. for safety reasons
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a nodular cast iron pipe die, which comprises: the support base, the first annular guide rail and the cast iron pipe die are arranged on the support base; the first annular guide rail is connected to the supporting base, the cast iron pipe die is horizontally inserted into the first annular guide rail, and the rear end of the cast iron pipe die is rotatably connected into the first annular guide rail; and an anti-rotation speed reduction mechanism is connected between the cast iron pipe die and the support base. When the rotating speed of the cast iron pipe die driven by the main driving motor is reduced, the centrifugal force is reduced, so that the main magnet block slides back under the action of the resilience force of the first connecting spring, the adsorbed iron slide block is pulled to be separated from the auxiliary magnet block and extruded onto the pressure sensing switch, then the position of the auxiliary driving motor is fixed, and after the auxiliary driving motor is started, the auxiliary driving motor drives the cast iron pipe die to continuously rotate at a certain rotating speed through the auxiliary driving gear, so that the rotating speed recovery and the centrifugal force recovery are realized, and the cast iron pipe can be conveniently and continuously manufactured.
Description
Technical Field
The invention relates to the technical field of nodular cast iron pipe dies, in particular to a nodular cast iron pipe die.
Background
The essence of the cast iron steel pipe is a nodular cast iron pipe, and the nodular cast iron pipe has the iron essence and the steel performance, so the nodular cast iron pipe is called as the method, and in the production and manufacturing process, magnesium is mainly added into molten iron, then the molten iron is guided into a cast iron pipe die through molten iron conduction equipment, and the cast iron pipe die rotates under a driving device, and the guided molten iron is spread and dispersed by means of centrifugal force to be molded; the common nodular cast iron pipe die is driven to rotate by driving elements such as a driving motor, the rotating speed of the common driving motor is formed by the action of power supply and an auxiliary rotating speed element inside the common driving motor, and the centrifugal force generated by the driving motor of the conventional nodular cast iron pipe die is reduced once the rotating speed of the conventional nodular cast iron pipe die is reduced in the process of producing the pipe body, so that the normal forming of the pipe body cannot be ensured, the conventional pipe die cannot prevent the rotating speed from being reduced, and the condition of reducing the rotating speed cannot be repaired in time.
Disclosure of Invention
The present invention is directed to a nodular cast iron pipe mold to solve the above problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a ductile cast iron pipe die comprising: the support base, the first annular guide rail and the cast iron pipe die are arranged on the support base; the first annular guide rail is connected to the supporting base, the cast iron pipe die is horizontally inserted into the first annular guide rail, and the rear end of the cast iron pipe die is rotatably connected into the first annular guide rail; an anti-rotation speed reduction mechanism is connected between the cast iron pipe die and the support base; prevent that rotational speed reduces mechanism includes: the device comprises a main driving motor, a main driving gear, a lifting frame, a small hydraulic telescopic rod, a rotating speed detection switch group, a second annular guide rail, an auxiliary driving motor, an auxiliary driving gear, a supporting frame, a first gear ring, a second gear ring and a linkage fixing mechanism; the lifting frame is connected to the supporting base through the small hydraulic telescopic rod, the main driving motor is fixedly installed in the lifting frame, and the main driving gear is fixedly installed at the main shaft end of the main driving motor; the first gear ring is fixedly connected to the outer wall of the front end of the cast iron pipe die in a surrounding mode, the main driving gear is meshed with the lower side of the first gear ring, the second annular guide rail is vertically and fixedly connected to the supporting base, the supporting frames are connected into the second annular guide rail in a pair in a sliding mode, and the supporting frames are connected with the lifting frame through the linkage fixing mechanism; the auxiliary driving motor is fixedly connected to the supporting frame, and the auxiliary driving gear is fixedly connected to a main shaft end of the auxiliary driving motor; the second gear ring is fixedly connected to the outer wall of the cast iron pipe die close to the rear end in a surrounding mode, and the secondary driving gears are meshed with the second gear ring; the rotating speed detection switch group is installed on the outer wall of the cast iron pipe die, meanwhile, a blanking recovery mechanism is arranged at the front end of the cast iron pipe die, and a demolding heating mechanism is arranged at the rear end of the cast iron pipe die.
Further, the rotation speed detection switch group includes: the magnetic switch comprises a connecting box, a first connecting spring, a main magnet block, an auxiliary magnet block, an iron slide block and a pressure sensing switch; the connecting box is fixedly connected to the outer wall of the cast iron pipe die; the main magnet block is connected to the inner side of the end head of the connecting box close to the cast iron pipe die in a sliding mode, and is connected with the inner wall of the connecting box through the first connecting spring; the auxiliary magnet block is fixedly connected to the inner side of the end socket of the connecting box far away from the cast iron pipe die; the iron sliding block is connected to the inner side of the connecting box in a sliding mode; the pressure induction switch is installed on the inner wall of the connecting box, and is electrically connected with the small hydraulic telescopic rod and the auxiliary driving motor.
Further, the linkage fixing mechanism includes: the connecting guide rail, the pressing plate, the sliding push rod, the first linkage rod, the second linkage rod, the linkage ring, the telescopic clamping rod, the second connecting spring, the rotating ring, the through hole and the clamping hole are connected; the connecting guide rail is horizontally and fixedly connected to the supporting base; the sliding push rod is connected to the connecting guide rail in a sliding mode; the first linkage rod is movably connected to the front side of the sliding push rod, the second linkage rod is movably connected to the tail end of the first linkage rod, and the tail end of the second linkage rod is movably connected to the front end of the connecting guide rail; the pressing plate is horizontally and fixedly connected to the lifting frame; the through holes are arranged to the outer wall of the front side of the second annular guide rail in an equidistant mode in a surrounding mode, the outer side of each through hole is provided with the telescopic clamping rod in an aligned mode, and the second connecting spring is connected between the telescopic end and the fixed end of the telescopic clamping rod; the outer end heads of all the telescopic clamping rods are fixedly connected through the linkage ring, and the linkage ring is fixedly connected with the sliding push rod; the rotating ring is embedded in the second annular guide rail in a sliding mode, the supporting frame is fixedly connected to the rotating ring, and the clamping holes are formed in the rotating ring at equal intervals.
Furthermore, the linkage ring and the sliding push rod are integrally cast, and the linkage ring and the sliding push rod are steel rods.
Further, the blanking recovery mechanism comprises: the device comprises a funnel barrel, a butt-joint sliding pipe, a supporting telescopic rod, a third connecting spring, a linkage plate, a pressure rod, a butt-joint box, a piston extrusion block, a bottom box, a fixed pulley, a universal ball, a long and thin guide pipe and a steel wire; the butt joint box is fixedly connected to the upper side of the bottom box; the funnel barrel is arranged on the butt box and is positioned at the lower side of the feeding end of the cast iron pipe die; the butt joint sliding pipe is vertically and fixedly connected to the bottom of the funnel barrel and is inserted into the butt joint box in a sliding mode; the supporting telescopic rod is vertically connected between the linkage plate and the butt joint box, and the linkage plate is fixedly connected to the funnel barrel; the third connecting spring is connected between the telescopic end and the fixed end of the supporting telescopic rod; the compression bar is fixedly connected to the cast iron pipe die, and the vertical distance between the cast iron pipe die and the linkage plate is smaller than the length of the compression bar; the piston extrusion block is hung at the bottom of the butt joint sliding pipe, one end of the elongated guide pipe is inserted into the inner side of the bottom box, and the end head of the elongated guide pipe is movably connected onto the bottom side wall of the bottom box through the universal ball; the fixed pulley is fixedly connected to the upper part of the front side of the butt joint box; the wire is connected between the end of the elongated conduit and the funnel.
Furthermore, the tail end of the pressure lever is movably embedded with a ball.
Furthermore, the upper end surface of the piston extrusion block is a convex spherical surface.
Further, the mold release heating mechanism includes: the electric heating device comprises an outer box body, an electric heating ring, an air inlet, a compression box, a compression plate, an electric telescopic rod, a first one-way air valve, a second one-way air valve, a transverse pipe and an air outlet pipe head; the outer box body is fixedly connected to the supporting base, and the rear end of the cast iron pipe die is inserted into the outer box body; the electric heating ring is vertically and fixedly connected to the inside of the outer box body; the air inlet is formed to the upper side wall of the outer box body at the upper side position of the electric heating ring; the compression box is fixedly connected to the upper side of the outer box body at the position of the air inlet, and the bottom of the compression box is communicated with the air inlet; the first one-way air valve is fixedly arranged at the air inlet; the electric telescopic rod is vertically and fixedly connected to the outer side of the top of the compression box, and the telescopic end of the electric telescopic rod is inserted into the compression box; the compression plate is horizontally and fixedly connected to the telescopic end of the electric telescopic rod; the transverse pipe is horizontally and fixedly connected to the right side of the compression box, and the transverse pipe is communicated with the compression box through the second one-way air valve; the air outlet pipe heads are fixedly connected to the lower side of the transverse pipe at equal intervals, and are communicated to the inner top of the outer box body.
Compared with the prior art, the invention has the beneficial effects that:
1. the main driving motor drives the cast iron pipe die to rotate at a certain rotating speed through the matching connection of the main driving gear and the first gear ring, so that molten iron poured into the cast iron pipe die is enabled to be diffused under the action of certain centrifugal force, the main magnet block in the rotating speed detection switch group slides and is adsorbed to the iron slide block under the action of the centrifugal force in the process that the main driving motor is started and accelerated to a rated uniform speed state, the centrifugal force is reduced when the rotating speed of the cast iron pipe die driven by the main driving motor is reduced, so that the main magnet block slides back under the action of the resilience force of the first connecting spring, the adsorbed iron slide block is pulled to be separated from the auxiliary magnet block and is extruded to the pressure sensing switch, the pressure sensing switch causes the main driving motor to be separated from the cast iron pipe die under the contraction action of the small hydraulic telescopic rod, and meanwhile, the auxiliary driving motor and the auxiliary driving gear which rotate synchronously along with the cast iron pipe die are linked and fixed in the descending process of the main driving motor, after the auxiliary driving motor is started, the cast iron pipe die is driven by the auxiliary driving gear to continuously rotate at a certain rotating speed, so that the rotating speed recovery and the centrifugal force recovery are realized, and the cast iron pipe can be conveniently and continuously manufactured;
2. the excess molten iron flowing down in the process of leading molten iron into the port of the cast iron pipe die falls into the funnel barrel and is stored in the bottom box, the rotating cast iron pipe die causes the funnel barrel to continuously reciprocate up and down through the pressure rod and the linkage plate, the funnel barrel extrudes the molten iron recovered in the bottom box through the piston extrusion block every time the funnel barrel descends, so that the molten iron enters the elongated guide pipe under the action of pressure and is then sprayed into a transition container for pouring the molten iron into the cast iron pipe die, and when the funnel barrel ascends every time, the elongated guide pipe rotates to a position with a smaller inclination angle under the action of gravity, the speed of the molten iron flowing back into the elongated guide pipe is reduced, the molten iron flowing back quantity pressed into the elongated guide pipe every time is reduced, and the molten iron recovery speed is improved;
3. when the nodular cast iron pipe manufactured by the cast iron pipe die is cooled, formed and extracted under the action of an original cooling system, the nodular cast iron pipe is externally reheated by virtue of the electric heating rings distributed at equal intervals, so that the phenomenon that the nodular cast iron pipe is separated after cooling and separated out is avoided, the nodular cast iron pipe is separated from a thermal environment and is cooled at a high speed, the material performance is changed, meanwhile, the ambient air is heated in the heating process of the electric heating rings, the heated air rises and enters the compression box, meanwhile, the compression plate is continuously compressed downwards and enters the hot air in the compression box, and the heat dissipated by the electric heating rings is reused on the cast iron pipe through the transverse pipe and the air outlet pipe head to be sprayed out in the extraction direction of the nodular cast iron pipe, so that the heat generated by the electric heating rings is fully utilized, the separated nodular cast iron pipe is conveniently heated in the external environment, and the nodular cast iron pipe is conveniently transferred to subsequent equipment under the condition of ensuring the manufacturing quality.
Drawings
FIG. 1 is a schematic view of the overall structure of a nodular cast iron pipe die according to the invention;
FIG. 2 is a schematic top view of a nodular cast iron pipe mold according to the present invention;
FIG. 3 is a schematic structural diagram of a rotation speed detection switch set in a nodular cast iron pipe die according to the invention;
FIG. 4 is a schematic structural diagram of a second annular guide rail, a support frame and a telescopic clamping rod in the ductile cast iron pipe mold according to the present invention;
FIG. 5 is a left side view partial structure schematic diagram of the fitting connection of the telescopic clamping rod and the pressing plate in the nodular cast iron pipe mold according to the invention;
FIG. 6 is a schematic diagram of a right-view partial structure of a fitting connection of a slender conduit, a bottom box, a funnel and a cast iron pipe mold in a nodular cast iron pipe mold according to the invention;
FIG. 7 is a schematic diagram of a right-side sectional structure of the outer box, the electric heating ring and the compression box in the nodular cast iron pipe mold according to the present invention.
In FIGS. 1-7: 1. a support base; 2. a lifting frame; 3. a small hydraulic telescopic rod; 4. a main drive motor; 5. a main drive gear; 6. connecting the guide rails; 7. pressing a plate; 8. a sliding push rod; 9. a link ring; 10. a second annular guide rail; 11. a support frame; 12. a secondary drive motor; 13. a counter drive gear; 14. rotating the ring; 15. a connection box; 16. a first gear ring; 17. a cast iron pipe die; 18. a second gear ring; 19. a first endless guide rail; 20. an outer case; 21. butting sliding pipes; 22. a linkage plate; 23. a pressure lever; 24. a funnel barrel; 25. a connection box; 26. an elongated catheter; 27. a secondary magnet block; 28. an iron slide block; 29. a pressure sensitive switch; 30. a main magnet block; 31. a first connecting spring; 32. a clamping hole; 33. a telescopic clamping rod; 34. a second connecting spring; 35. perforating; 36. a second linkage rod; 37. a first linkage rod; 38. a steel wire; 39. a fixed pulley; 40. a ball bearing; 41. a third connecting spring; 42. supporting the telescopic rod; 43. a piston extrusion block; 44. a universal ball; 45. a bottom case; 46. an electric telescopic rod; 47. compressing the box; 48. a compression plate; 49. a first one-way air valve; 50. an air inlet; 51. an electric heating ring; 52. a second one-way air valve; 53. a transverse tube; 54. an air outlet pipe head.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: a ductile cast iron pipe die comprising: the supporting base 1, the first annular guide rail 19 and the cast iron pipe die 17; the first annular guide rail 19 is vertically and fixedly connected to the support base 1, the cast iron pipe die 17 is horizontally inserted into the first annular guide rail 19, and the rear end of the cast iron pipe die 17 is rotatably connected into the first annular guide rail 19; an anti-rotation speed reduction mechanism is connected between the cast iron pipe die 17 and the support base 1; prevent that rotational speed reduces mechanism includes: the device comprises a main driving motor 4, a main driving gear 5, a lifting frame 2, a small hydraulic telescopic rod 3, a rotating speed detection switch group, a second annular guide rail 10, an auxiliary driving motor 12, an auxiliary driving gear 13, a support frame 11, a first gear ring 16, a second gear ring 18 and a linkage fixing mechanism; the lifting frame 2 is connected to the supporting base 1 through a small hydraulic telescopic rod 3, a main driving motor 4 is fixedly installed in the lifting frame 2, and a main driving gear 5 is fixedly installed at a main shaft end of the main driving motor 4; the first gear ring 16 is fixedly connected to the outer wall of the front end of the cast iron pipe die 17 in a surrounding manner, the main driving gear 5 is meshed with the lower side of the first gear ring 16, the second annular guide rail 10 is vertically and fixedly connected to the supporting base 1, the supporting frames 11 are connected into the second annular guide rail 10 in a pair in a sliding manner, and the supporting frames 11 are connected with the lifting frame 2 through a linkage fixing mechanism; the auxiliary driving motor 12 is fixedly connected to the support frame 11, and the auxiliary driving gear 13 is fixedly connected to the main shaft end of the auxiliary driving motor 12; the second gear ring 18 is fixedly connected to the outer wall of the cast iron pipe die 17 close to the rear end in a surrounding mode, and the secondary driving gears 13 are meshed with the second gear ring 18; the rotating speed detection switch group is installed on the outer wall of the cast iron pipe die 17, meanwhile, a blanking recovery mechanism is arranged at the front end of the cast iron pipe die 17, a demoulding heating mechanism is arranged at the rear end of the cast iron pipe die 17, a cooling system is arranged in the cast iron pipe die 17, and auxiliary components such as a core column in the existing nodular cast iron pipe machining production process are also arranged at the rear end of the cast iron pipe die 17.
When the nodular cast iron pipe is produced, molten iron added with magnesium is poured in from the front end of a cast iron pipe die 17, meanwhile, a main driving motor 4 is started, the cast iron pipe die 17 rotates at a certain rotating speed through the matching connection of a main driving gear 5 and a first gear ring 16, the molten iron poured in the cast iron pipe die 17 is ensured to be diffused under the action of certain centrifugal force and attached to the inner wall of the cast iron pipe die 17 for forming processing, in the process, a secondary driving motor 12 stops, a main shaft of the secondary driving motor is in a self-locking state, a secondary driving gear 13 at a main shaft end of the secondary driving motor rotates along with a second gear ring 18, a support frame 11 connected with the secondary driving motor 12 slides along a second annular guide rail 10, and when the rotating speed detection switch group detects that the cast iron pipe die 17 is reduced, the rotating speed detection switch group triggers a small hydraulic telescopic rod 3 at the bottom of a lifting frame 2 to contract, so that the lifting frame 2 drives the main driving gear 5 to descend and separate from the first gear ring 16, meanwhile, in the descending process of the lifting frame 2, the supporting frame 11 connected with the auxiliary driving motor 12 is clamped in the second annular guide rail 10 by virtue of the linkage fixing mechanism, meanwhile, the auxiliary driving motor 12 is triggered by the rotating speed detection switch group, the auxiliary driving motor 12 drives the auxiliary driving gear 13 to rotate, so that the auxiliary driving motor 12 is fixed along with the supporting frame 11, the auxiliary driving gear 13 is matched and connected with the second gear ring 18 to enable the cast iron pipe die 17 to continue to rotate by virtue of a certain rotating speed, namely, the rotating speed is recovered, and the centrifugal force is recovered.
The rotation speed detection switch group comprises: the connecting box 15, the first connecting spring 31, the main magnet block 30, the auxiliary magnet block 27, the iron slide 28 and the pressure sensing switch 29; the connecting box 15 is fixedly connected to the outer wall of the cast iron pipe die 17; the main magnet block 30 is slidably connected to the inner side of the end of the connecting box 15 close to the cast iron pipe die 17, and the main magnet block 30 is connected with the inner wall of the connecting box 15 through a first connecting spring 31; the auxiliary magnet block 27 is fixedly connected to the inner side of the end head of the connecting box 15 far away from the cast iron pipe die 17; the iron slide block 28 is connected to the inner side of the connecting box 15 in a sliding manner, the iron slide block 28 is adsorbed at the auxiliary magnet block 27 at the initial position, meanwhile, the magnetic force of the main magnet block 30 is greater than that of the auxiliary magnet block 27, and after the main magnet block 30 adsorbs the iron slide block 28, the magnetic force is greater than the centrifugal force applied to the iron slide block 28 in the rotation process of the cast iron pipe die 17; a pressure-sensitive switch 29 is mounted to the inner wall of the connection box 15, and the pressure-sensitive switch 29 is electrically connected to the contraction control circuit of the small-sized hydraulic telescopic rod 3 and the starting circuit of the sub-drive motor 12, while the pressure-sensitive switch 29 is located at a position close to the sub-magnet block 27. When the cast iron pipe die 17 is driven by the main driving motor 4 to gradually accelerate, the centrifugal force applied to the main magnet block 30 is gradually increased, so that the main magnet block 30 slides towards the stretching direction of the first connecting spring 31 and gradually approaches to the position of the iron slide block 28, when the rotating speed of the cast iron pipe die 17 is stabilized, the main magnet block 30 is just attached and adsorbed on the iron slide block 28, when the rotating speed of the cast iron pipe die 17 is reduced due to the damage of the main driving motor 4 or the problem of the matching of the main driving gear 5 and the first gear ring 16, so that the centrifugal force is reduced, the main magnet block 30 slides back under the resilience force of the first connecting spring 31, at the moment, the magnetic force of the main magnet block 30 is greater than the magnetic force of the auxiliary magnet block 27, so that the main magnet block 30 pulls the iron slide block 28 to slide back together, in the sliding process, the iron slide block 28 is pressed on the pressure sensing switch 29, and the pressure sensing switch 29 generates sensing to contract the small-sized hydraulic telescopic rod 3, and simultaneously, the auxiliary driving motor 12 is started, thereby realizing the speed recovery.
The linkage fixing mechanism includes: the connecting guide rail 6, the pressing plate 7, the sliding push rod 8, the first linkage rod 37, the second linkage rod 36, the linkage ring 9, the telescopic clamping rod 33, the second connecting spring 34, the rotary ring 14, the through hole 35 and the clamping hole 32 are connected; the connecting guide rail 6 is horizontally and fixedly connected to the supporting base 1; the sliding push rod 8 is connected to the connecting guide rail 6 in a sliding mode, and the connecting guide rail 6 is located at the front and back moving position; the first linkage rod 37 is movably connected to the front side of the sliding push rod 8 through a hinge, the second linkage rod 36 is movably connected to the tail end of the first linkage rod 37 through a hinge, and the tail end of the second linkage rod 36 is movably connected to the front end of the connecting guide rail 6 through a hinge; the pressing plate 7 is horizontally and fixedly connected to the lifting frame 2, and the pressing plate 7 is positioned above the connecting position of the first linkage rod 37 and the second linkage rod 36; the through holes 35 are arranged to the outer wall of the front side of the second annular guide rail 10 at equal intervals in a surrounding manner, the outer side of each through hole 35 is provided with a telescopic clamping rod 33 in an aligned manner, and a second connecting spring 34 is connected between the telescopic end and the fixed end of each telescopic clamping rod 33; the outer end heads of all the telescopic clamping rods 33 are fixedly connected through a linkage ring 9, and the linkage ring 9 is fixedly connected with the sliding push rod 8; the rotating ring 14 is embedded in the second annular guide rail 10 in a sliding manner, the support frame 11 is fixedly connected to the rotating ring 14, and the clamping holes 32 are arranged on the rotating ring 14 at equal intervals; the support frame 11 depends on the rotary ring 14 to slide along the second annular guide rail 10, when the lifting frame 2 descends along with the contraction of the small hydraulic telescopic rod 3, the pressure plate 7 on the lifting frame 2 descends to press the connection point of the first linkage rod 37 and the second linkage rod 36, so that the first linkage rod 37 and the second linkage rod 36 are expanded, the sliding push rod 8 is pushed by the first linkage rod 37 and the second linkage rod 36 to move backwards, then the sliding push rod 8 pushes all the telescopic clamping rods 33 to penetrate towards the position of the through hole 35 through the linkage ring 9, if the telescopic clamping rods 33 penetrate into the second annular guide rail 10 and are not penetrated into the clamping holes 32, the telescopic clamping rods 33 are squeezed onto the rotary ring 14 to be contracted, at the moment, the second connecting spring 34 generates resilience force, the rotary ring 14 continuously rotates along with the support frame 11 in the second annular guide rail 10, when the end of the telescopic clamping rods 33 is aligned with the clamping holes 32 on the rotary ring 14, the retractable clamping rod 33 is ejected by the resilience of the second connecting spring 34 and inserted into the clamping hole 32, so that the rotary ring 14 is clamped in the second annular guide rail 10, and the position of the auxiliary driving motor 12 on the support frame 11 is fixed.
The linkage ring 9 and the sliding push rod 8 are integrally cast, and the linkage ring 9 and the sliding push rod 8 are both steel rods, so that bending is avoided.
The blanking recovery mechanism comprises: the device comprises a funnel barrel 24, a butt joint sliding pipe 21, a supporting telescopic rod 42, a third connecting spring 41, a linkage plate 22, a pressure rod 23, a butt joint box 25, a piston extrusion block 43, a bottom box 45, a fixed pulley 39, a universal ball 44, an elongated conduit 26 and a steel wire 38; the butt joint box 25 is fixedly connected to the upper side of the bottom box 45, and the butt joint box 25 is communicated with the bottom box 45; the funnel barrel 24 is arranged on the upper side of the butt box 25, and the funnel barrel 24 is positioned on the lower side of the feeding end of the cast iron pipe die 17; the butt joint sliding pipe 21 is vertically and fixedly connected to the bottom of the funnel barrel 24, and the butt joint sliding pipe 21 is inserted into the butt joint box 25 in a sliding mode; the supporting telescopic rod 42 is vertically connected between the linkage plate 22 and the docking box 25, and the linkage plate 22 is fixedly connected to the rear side edge of the port of the funnel barrel 24; the third connecting spring 41 is connected between the telescopic end and the fixed end of the supporting telescopic rod 42; the compression bar 23 is fixedly connected to the outer wall of the front end opening of the cast iron pipe die 17, and the vertical distance between the cast iron pipe die 17 and the linkage plate 22 is smaller than the length of the compression bar 23; the piston extrusion block 43 is hung on the bottom of the butt joint sliding pipe 21 through a rod body, the length and width of the piston extrusion block 43 is equal to the length and width of the inner cavity of the bottom box 45, one end of the elongated guide pipe 26 is inserted into the inner side of the bottom box 45, and the end of the elongated guide pipe 26 is movably connected to the bottom side wall of the bottom box 45 through a universal ball 44; the fixed pulley 39 is fixedly connected to the upper front side of the butt box 25; the wire 38 is connected between the end of the elongated conduit 26 and the tundish 24, the end of the elongated conduit 26 being above the transition vessel for conducting molten iron; when molten iron is guided into the rotating cast iron pipe die 17 through the equipped material guiding equipment, due to the centrifugal force, splashing excess materials are inevitably generated and flow out from the port of the cast iron pipe die 17, the flowing-out molten iron excess materials fall into the funnel barrel 24, then flow into the butt joint box 25 through the butt joint sliding pipe 21 and finally fall into the bottom box 45, meanwhile, in the rotating process of the cast iron pipe die 17, the pressure rod 23 at the end of the cast iron pipe die continuously extrudes the linkage plate 22, so that the linkage plate 22 descends by virtue of the supporting telescopic rod 42, the funnel barrel 24 descends along with the linkage plate 22, the funnel barrel 24 drives the piston extrusion block 43 to extrude the molten iron recovered in the bottom box 45, so that the molten iron enters the elongated guide pipe 26 under the pressure effect, and when the pressure rod 23 is separated from the linkage plate 22, the funnel barrel 24 rises under the resilience force of the third connecting spring 41 on the supporting telescopic rod 42, at the moment, the steel wire 38 connected with the funnel barrel 24 is loosened, make things convenient for the end of long and thin pipe 26 to rely on universal ball 44 to rotate down under the action of gravity, the inclination of long and thin pipe 26 diminishes promptly, slow down the speed of backward flow when getting into long and thin pipe 26 interior molten iron and not spouting yet, so because cast iron pipe die 17 constantly rotates fast, conveniently make the funnel section of thick bamboo 24 drive the molten iron that piston extrusion block 43 descends the compression and retrieve constantly to be convenient for get into the molten iron in the long and thin pipe 26 and impress in the transition container of pouring the molten iron in to cast iron pipe die 17.
The tail end of the pressure rod 23 is movably embedded with a ball 40, and the ball 40 facilitates the relative sliding when the tail end of the pressure rod 23 contacts the end surface of the linkage plate 22.
The upper end surface of the piston extrusion block 43 is a convex spherical surface, so that molten iron falling on the piston extrusion block 43 can conveniently flow down and flow into the bottom box 45.
The demoulding heating mechanism comprises: the electric heating device comprises an outer box body 20, an electric heating ring 51, an air inlet 50, a compression box 47, a compression plate 48, an electric telescopic rod 46, a first one-way air valve 49, a second one-way air valve 52, a transverse pipe 53 and an air outlet pipe head 54; the outer box body 20 is fixedly connected to the upper side of the rear end of the support base 1, and the rear end of the cast iron pipe die 17 is inserted into the outer box body 20, and the rear end of the outer box body 20 is an opening; the electric heating rings 51 are vertically and fixedly connected to the inside of the outer box 20, and the electric heating rings 51 are equidistantly distributed from front to back along the outer box 20; the electric heating ring 51 is made of a heat-conducting metal body, and electric heating components such as an electric heating wire are distributed on the inner wall of the electric heating ring; the air inlet 50 is opened to the upper side wall of the outer box 20 at the upper side position of the electric heating ring 51; the compression box 47 is fixedly connected to the upper side of the outer case 20 where the air inlet 50 is located, and the bottom of the compression box 47 is communicated with the air inlet 50; the first one-way air valve 49 is fixedly arranged at the air inlet 50, and the ventilation flow direction of the first one-way air valve 49 is that the air inlet 50 flows into the compression box 47; the electric telescopic rod 46 is vertically and fixedly connected to the top outer side of the compression box 47, and the telescopic end of the electric telescopic rod 46 is inserted into the compression box 47; the compression plate 48 is horizontally and fixedly connected to the telescopic end of the electric telescopic rod 46; the transverse pipe 53 is horizontally and fixedly connected to the right side of the compression box 47, the transverse pipe 53 is communicated with the compression box 47 through a second one-way air valve 52, and the ventilation flow direction of the second one-way air valve 52 is that the air in the compression box 47 flows to the transverse pipe 53; the air outlet pipe heads 54 are fixedly connected to the lower side of the transverse pipe 53 at equal intervals, and the air outlet pipe heads 54 are communicated to the inner top of the outer box body 20; meanwhile, the rear end of the cast iron pipe die 17 is provided with a cast iron pipe drawing mechanism which is the existing equipment in the existing nodular cast iron pipe manufacturing process and is used for transversely processing the nodular cast iron pipe formed in the cast iron pipe die 17, when the nodular cast iron pipe is cooled and formed under the action of a cooling system in the cast iron pipe die 17, the nodular cast iron pipe is transversely drawn out from the rear side by the cast iron pipe drawing mechanism, the cast iron pipe transversely penetrates through the outer box body 20 in the process and sequentially passes through the electric heating rings 51, the cast iron pipe is separated from the thermal environment after being cooled and separated, the cast iron pipe is easily cooled at an extremely high speed, in order to avoid the change of material performance caused by the over-high cooling of the cast iron pipe, the electric heating rings 51 heat the cast iron pipe again in the cast iron pipe drawing process, the surrounding air is heated in the heating process of the electric heating rings 51, the heated air rises and then enters the compression box 47 from the air inlet 50, meanwhile, the electric telescopic rod 46 continuously performs reciprocating telescopic motion, when the electric telescopic rod extends, the compression plate 48 is compressed downwards to enter the compression box 47 to heat air, and due to the existence of the first one-way air valve 49, the compressed heat air is prevented from being discharged from the air inlet 50 and only enters the transverse pipe 53, and is finally sprayed downwards from the air outlet pipe head 54, so that the heat dissipated by the electric heating ring 51 acts on the cast iron pipe again, the heat generated by the electric heating ring 51 is fully utilized, and the energy loss is reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A ductile cast iron pipe die comprising: the device comprises a supporting base (1), a first annular guide rail (19) and a cast iron pipe die (17); characterized in that the first annular guide rail (19) is connected to the support base (1), the cast iron pipe die (17) is horizontally inserted into the first annular guide rail (19), and the rear end of the cast iron pipe die (17) is rotatably connected into the first annular guide rail (19); an anti-rotation speed reduction mechanism is connected between the cast iron pipe die (17) and the support base (1); prevent that rotational speed reduces mechanism includes: the device comprises a main driving motor (4), a main driving gear (5), a lifting frame (2), a small hydraulic telescopic rod (3), a rotating speed detection switch group, a second annular guide rail (10), an auxiliary driving motor (12), an auxiliary driving gear (13), a support frame (11), a first gear ring (16), a second gear ring (18) and a linkage fixing mechanism; the lifting frame (2) is connected to the supporting base (1) through the small hydraulic telescopic rod (3), the main driving motor (4) is fixedly installed in the lifting frame (2), and the main driving gear (5) is fixedly installed at a main shaft end of the main driving motor (4); the first gear ring (16) is fixedly connected to the outer wall of the front end of the cast iron pipe die (17) in a surrounding mode, the main driving gear (5) is meshed with the lower side of the first gear ring (16), the second annular guide rail (10) is vertically and fixedly connected to the supporting base (1), the supporting frames (11) are connected into the second annular guide rail (10) in a sliding mode in pairs, and the supporting frames (11) are connected with the lifting frame (2) through the linkage fixing mechanism; the auxiliary driving motor (12) is fixedly connected to the supporting frame (11), and the auxiliary driving gear (13) is fixedly connected to a main shaft end of the auxiliary driving motor (12); the second gear ring (18) is fixedly connected to the outer wall of the cast iron pipe die (17) close to the rear end in a surrounding mode, and the secondary driving gears (13) are meshed with the second gear ring (18); the rotating speed detection switch group is installed on the outer wall of the cast iron pipe die (17), meanwhile, a blanking recovery mechanism is arranged at the front end of the cast iron pipe die (17), and a demolding heating mechanism is arranged at the rear end of the cast iron pipe die (17).
2. A ductile cast iron pipe mold according to claim 1, wherein: the rotation speed detection switch group comprises: the magnetic switch comprises a connecting box (15), a first connecting spring (31), a main magnet block (30), an auxiliary magnet block (27), an iron slide block (28) and a pressure sensing switch (29); the connecting box (15) is fixedly connected to the outer wall of the cast iron pipe die (17); the main magnet block (30) is connected to the inner side of the end head of the connecting box (15) close to the cast iron pipe die (17) in a sliding mode, and the main magnet block (30) is connected with the inner wall of the connecting box (15) through the first connecting spring (31); the auxiliary magnet block (27) is fixedly connected to the inner side of the end head of the connecting box (15) far away from the cast iron pipe die (17); the iron slide block (28) is connected to the inner side of the connecting box (15) in a sliding way; the pressure induction switch (29) is installed on the inner wall of the connection box (15), and the pressure induction switch (29) is electrically connected with the small hydraulic telescopic rod (3) and the auxiliary driving motor (12).
3. A ductile cast iron pipe mold according to claim 1, wherein: the linkage fixing mechanism includes: the device comprises a connecting guide rail (6), a pressing plate (7), a sliding push rod (8), a first linkage rod (37), a second linkage rod (36), a linkage ring (9), a telescopic clamping rod (33), a second connecting spring (34), a rotary ring (14), a through hole (35) and a clamping hole (32); the connecting guide rail (6) is horizontally and fixedly connected to the supporting base (1); the sliding push rod (8) is connected to the connecting guide rail (6) in a sliding mode; the first linkage rod (37) is movably connected to the front side of the sliding push rod (8), the second linkage rod (36) is movably connected to the tail end of the first linkage rod (37), and the tail end of the second linkage rod (36) is movably connected to the front end of the connecting guide rail (6); the pressing plate (7) is horizontally and fixedly connected to the lifting frame (2); the through holes (35) are formed in the outer wall of the front side of the second annular guide rail (10) in an encircling and equidistant mode, the telescopic clamping rod (33) is arranged on the outer side of each through hole (35) in an aligned mode, and the second connecting spring (34) is connected between the telescopic end and the fixed end of the telescopic clamping rod (33); the outer end heads of all the telescopic clamping rods (33) are fixedly connected through the linkage ring (9), and the linkage ring (9) is fixedly connected with the sliding push rod (8); the rotating ring (14) is embedded in the second annular guide rail (10) in a sliding mode, the supporting frame (11) is fixedly connected to the rotating ring (14), and the clamping holes (32) are formed in the rotating ring (14) at equal intervals.
4. A ductile cast iron pipe mold according to claim 3, wherein: the linkage ring (9) and the sliding push rod (8) are integrally cast, and the linkage ring (9) and the sliding push rod (8) are both steel rods.
5. A ductile cast iron pipe mold according to claim 1, wherein: mechanism is retrieved to blanking includes: the device comprises a funnel barrel (24), a butt joint sliding pipe (21), a supporting telescopic rod (42), a third connecting spring (41), a linkage plate (22), a pressure rod (23), a butt joint box (25), a piston extrusion block (43), a bottom box (45), a fixed pulley (39), a universal ball (44), a long and thin guide pipe (26) and a steel wire (38); the butt box (25) is fixedly connected to the upper side of the bottom box (45); the funnel barrel (24) is arranged on the butt box (25), and the funnel barrel (24) is positioned at the lower side of the feeding end of the cast iron pipe die (17); the butt joint sliding pipe (21) is vertically and fixedly connected to the bottom of the funnel barrel (24), and the butt joint sliding pipe (21) is slidably inserted into the butt joint box (25); the supporting telescopic rod (42) is vertically connected between the linkage plate (22) and the butt box (25), and the linkage plate (22) is fixedly connected to the funnel barrel (24); the third connecting spring (41) is connected between the telescopic end and the fixed end of the supporting telescopic rod (42); the compression rod (23) is fixedly connected to the cast iron pipe die (17), and the vertical distance between the cast iron pipe die (17) and the linkage plate (22) is smaller than the length of the compression rod (23); the piston extrusion block (43) is hung on the bottom of the butt joint sliding pipe (21), one end of the elongated guide pipe (26) is inserted into the inner side of the bottom box (45), and the end of the elongated guide pipe (26) is movably connected onto the bottom side wall of the bottom box (45) through the universal ball (44); the fixed pulley (39) is fixedly connected to the upper front side of the butt box (25); the wire (38) is connected between the end of the elongated conduit (26) and the funnel (24).
6. A nodular cast iron pipe mould according to claim 5, characterised in that: the tail end of the pressure lever (23) is movably embedded with a ball (40).
7. A nodular cast iron pipe mould according to claim 5, characterised in that: the upper end surface of the piston extrusion block (43) is a convex spherical surface.
8. A ductile cast iron pipe mold according to claim 1, wherein: the demolding heating mechanism comprises: the electric heating device comprises an outer box body (20), an electric heating ring (51), an air inlet (50), a compression box (47), a compression plate (48), an electric telescopic rod (46), a first one-way air valve (49), a second one-way air valve (52), a transverse pipe (53) and an air outlet pipe head (54); the outer shell (20) is fixedly connected to the support base (1) and the rear end of the cast iron pipe die (17) is inserted in the outer shell (20); the electric heating ring (51) is vertically and fixedly connected to the inside of the outer box body (20); the air inlet (50) is arranged at the upper side wall of the outer box body (20) at the upper side position of the electric heating ring (51); the compression box (47) is fixedly connected to the upper side of the outer case (20) where the air inlet (50) is located, and the bottom of the compression box (47) is communicated with the air inlet (50); the first one-way air valve (49) is fixedly mounted at the air inlet (50); the electric telescopic rod (46) is vertically and fixedly connected to the outer side of the top of the compression box (47), and the telescopic end of the electric telescopic rod (46) is inserted into the compression box (47); the compression plate (48) is horizontally and fixedly connected to the telescopic end of the electric telescopic rod (46); the transverse pipe (53) is horizontally and fixedly connected to the right side of the compression box (47), and the transverse pipe (53) is communicated with the compression box (47) through the second one-way air valve (52); the air outlet pipe heads (54) are fixedly connected to the lower side of the transverse pipe (53) at equal intervals, and the air outlet pipe heads (54) are communicated to the inner top of the outer box body (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111551104.8A CN114147198A (en) | 2021-12-17 | 2021-12-17 | Nodular cast iron pipe die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111551104.8A CN114147198A (en) | 2021-12-17 | 2021-12-17 | Nodular cast iron pipe die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114147198A true CN114147198A (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111551104.8A Withdrawn CN114147198A (en) | 2021-12-17 | 2021-12-17 | Nodular cast iron pipe die |
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| CN (1) | CN114147198A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116372136A (en) * | 2023-05-29 | 2023-07-04 | 兴化市高性能金属材料制品研究院 | Centrifugal casting equipment for casting and forging high-strength heat-resistant alloy steel |
-
2021
- 2021-12-17 CN CN202111551104.8A patent/CN114147198A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116372136A (en) * | 2023-05-29 | 2023-07-04 | 兴化市高性能金属材料制品研究院 | Centrifugal casting equipment for casting and forging high-strength heat-resistant alloy steel |
| CN116372136B (en) * | 2023-05-29 | 2023-08-22 | 兴化市高性能金属材料制品研究院 | Centrifugal casting equipment for casting and forging high-strength heat-resistant alloy steel |
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Application publication date: 20220308 |
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