Nodular cast iron crankshaft casting equipment

Abstract

The invention discloses nodular cast iron crankshaft casting equipment which comprises a bottom plate, a supporting seat is movably arranged on one side of the top of the bottom plate, dumping assemblies are hinged to the two ends of the supporting seat correspondingly and symmetrically and fixedly installed on the bottom plate, and limiting assemblies are fixedly installed on the two sides of the top end of the supporting seat correspondingly. The limiting assemblies slidably abut against the two sides of the top end of the casting barrel correspondingly, and the casting barrel is arranged in the supporting base. A base is clamped to the other side of the top of the bottom plate in a sliding mode, a lower mold is embedded in the top of the base, an upper mold is arranged on the top of the lower mold, and a plurality of pressing mechanisms are arranged on the two sides of the upper mold respectively and fixedly connected with the base. A casting barrel is placed through a U-shaped opening formed in the supporting base, the top end of the casting barrel is limited through the limiting assembly, the casting barrel is prevented from shaking and disengaging during casting, the pouring assembly drives the supporting base to achieve pouring work, and then the supporting base drives the internally-fixed casting barrel to conduct casting work. The hydraulic cylinder is matched with the connecting rod mechanism to drive the casting barrel to incline.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, in particular to a ductile iron crankshaft casting device. Background Art

[0002] Ductile iron, a high-strength cast iron material developed in the 1950s, boasts comprehensive properties close to those of steel. Due to its superior properties, it has been successfully used in casting parts subject to complex loads and requiring high strength, toughness, and wear resistance. Ductile iron has rapidly become a widely used cast iron material, second only to gray cast iron. The crankshaft is the primary rotating component of an engine. When attached to the connecting rod, it converts the connecting rod's reciprocating motion into a circular rotation, making it a crucial component in the engine.

[0003] In the existing crankshaft casting, a casting bucket containing molten iron for casting the crankshaft is mostly moved to the front of the crankshaft mold by a crane, and the molten iron in the casting bucket is poured into the casting mold by the crane in conjunction with a rotating device to cast the crankshaft. However, during casting, the casting bucket filled with molten iron is always suspended in the air by the crane. As the molten iron in the casting bucket continues to decrease, the tilt angle continues to increase, and the casting bucket has poor stability and is prone to shaking, causing the molten iron to pour out of the mold, resulting in waste. For this reason, we propose a ductile iron crankshaft casting equipment to solve the above problem. Summary of the Invention

[0004] The object of the present invention is to provide a ductile iron crankshaft casting device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a ductile iron crankshaft casting device, comprising a base plate, a support seat movably provided on one side of the top of the base plate, a dumping assembly hingedly connected at both ends of the support seat, the dumping assembly symmetrically fixedly mounted on the base plate, and limit assemblies fixedly mounted on both sides of the top of the support seat, the limit assemblies slidably abutting against both sides of the top of a casting bucket, the casting bucket being disposed within the support seat; A base is slidably connected to the other side of the top of the bottom plate, a lower mold is embedded on the top of the base, an upper mold is provided on the top of the lower mold, and a plurality of clamping mechanisms are respectively provided on both sides of the upper mold, and the clamping mechanisms are fixedly connected to the base.

[0006] Preferably, a U-shaped opening is provided on one side of the support seat.

[0007] Preferably, the middle portion of the top end of the casting bucket is fixedly connected to both ends of a cross bar, and the middle portion of the top end of the cross bar is connected to a hanging ring via a threaded structure.

[0008] Preferably, the limit assembly includes a support cylinder, a transmission shaft 1, a swinging mouth, a pressure strip, a worm gear, a worm, a rotating shaft 1, and a dual-output shaft stepper motor, the support cylinder is fixedly connected to the two sides of the top of the support seat and the support cylinder is symmetrically arranged at the eccentric position of the U-shaped mouth, the transmission shaft 1 is coaxially installed in the support cylinder, one side of the transmission shaft 1 is fixedly connected to one end of the pressure strip, and the other end of the pressure strip slides out of the swinging mouth, and the swinging mouth is opened on one side of the top of the support cylinder, the other side of the transmission shaft 1 is rotatably installed on the support seat and the other side end of the transmission shaft 1 is fixedly sleeved with a worm gear, the worm gear is meshed and connected to the worm, the worm is fixedly connected to one end of the rotating shaft 1, and the other end of the rotating shaft 1 is fixedly connected to the output shafts at both ends of the dual-output shaft stepper motor, and the dual-output shaft stepper motor is fixedly installed in the support seat.

[0009] Preferably, the worm wheel, worm and rotating shaft are movably arranged in a movable cavity hollowed out at the bottom of the support seat.

[0010] Preferably, the dumping assembly includes a bracket, an upper hinge seat, an upper connecting rod, a middle hinge seat, a lower connecting rod, a hydraulic cylinder, and a lower hinge seat, one end of the bracket is respectively fixedly connected to the top of the base plate, the brackets are arranged parallel to each other, one side of the top of the bracket is respectively fixedly connected to one end of the upper hinge seat, the other end of the upper hinge seat is respectively hinged to one end of the upper connecting rod, and the other end of the upper connecting rod is respectively hinged to the support seat, the bottom of the upper hinge seat is provided with a middle hinge seat of which one end is respectively fixed to the bracket, the other end of the middle hinge seat is respectively hinged to one end of the lower connecting rod, and the other end of the lower connecting rod is respectively hinged to the support seat, the middle bottom end of the lower connecting rod is respectively hinged to one end of the hydraulic cylinder, the other end of the hydraulic cylinder is respectively hinged to the lower hinge seat, and the lower hinge seat is respectively fixedly connected to the bottom end of the bracket.

[0011] Preferably, the axes of the upper connecting rod and the lower connecting rod at one end away from the bracket are arranged in the same plane.

[0012] Preferably, the bottoms of both ends of the upper mold are fixedly connected to fixing bars respectively, and the pressing mechanisms are evenly distributed along the length direction of the base and symmetrically arranged on both sides of the base.

[0013] Preferably, the clamping mechanism includes a compacting component, a second transmission shaft, a driven bevel gear, a driving bevel gear, a second rotating shaft, and a servo motor. The compacting component is provided with multiple components and the bottom ends of the multiple compacting components are respectively fixedly connected to the base. The bottoms of the multiple compacting components are respectively rotatably connected to one side of the second transmission shaft, and the other side of the second transmission shaft is respectively rotatably connected to the base and the other side end of the second transmission shaft is rotated to extend into the rectangular cavity hollowed out at the bottom of the base. The other side end of the second transmission shaft is fixedly connected with the driven bevel gear, and the driven bevel gears are respectively meshed and connected with the driving bevel gears, and the driving bevel gears are respectively fixedly sleeved on the second rotating shaft. One end of the second rotating shaft is fixedly connected with the servo motor, and the servo motor is fixedly installed in the rectangular cavity in the base.

[0014] Preferably, the compaction assembly includes a fixed column, a threaded rod, a vertical guide opening, a horizontal guide opening, an internal threaded ring, a pressure plate, and a cylindrical cavity. The bottom end of the fixed column is fixedly connected to the base, and a cylindrical cavity is hollowed out in the fixed column. A threaded rod is coaxially installed in the cylindrical cavity. The outside of the threaded rod is sleeved with an internal threaded ring through a threaded structure. The outer wall of the internal threaded ring is fixedly connected to one end of the pressure plate, and the other end of the pressure plate slides out of the horizontal guide opening. The horizontal guide opening is opened on one side of the top of the cylindrical cavity and one end of the horizontal guide opening is connected to one end of the vertical guide opening. The vertical guide opening is opened on the fixed column, the opening width of the vertical guide opening is equal to the width of the pressure plate, the height of the horizontal guide opening is equal to the height of the pressure plate, and the bottom end of the threaded rod is connected to the second transmission shaft through a bevel gear transmission structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the casting bucket is placed through the U-shaped opening opened by the support seat, the limiting assembly limits the top of the casting bucket to prevent the casting bucket from shaking and detaching during casting, the tipping assembly drives the support seat to realize the tipping operation, and the support seat then drives the internally fixed casting bucket to perform the casting operation, and the whole casting bucket is tilted by the hydraulic cylinder and the connecting rod mechanism to ensure the stability during the tipping operation; the clamping mechanism presses down on the upper mold to ensure the tightness and stability of the connection between the upper mold and the lower mold during the casting operation, reducing the participation of personnel and improving the safety during the casting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a structural schematic diagram of another perspective of the present invention; Figure 3 This is a schematic diagram of the planar structure of the present invention; Figure 4 Schematic diagram of the structure of the limiting component in the present invention; Figure 5 Schematic diagram of the structure of the pressing mechanism in the present invention; Figure 6 It is a schematic diagram of the compaction component structure in the present invention.

[0017] In the figure: 1, bottom plate; 2, tipping assembly; 21, bracket; 22, upper hinge seat; 23, upper connecting rod; 24, middle hinge seat; 25, lower connecting rod; 26, hydraulic cylinder; 27, lower hinge seat; 3, support seat; 4, casting bucket; 41, cross bar; 42, lifting ring; 5, limit assembly; 51, support cylinder; 52, transmission shaft 1; 53, swing mouth; 54, pressure strip; 55, worm gear; 56, worm; 57, rotating shaft 1; 58, Dual-output shaft stepper motor; 6. Upper mold; 61. Fixed bar; 7. Lower mold; 8. Base; 9. Clamping mechanism; 91. Compacting assembly; 911. Fixed column; 912. Threaded rod; 913. Vertical guide port; 914. Horizontal guide port; 915. Internal threaded ring; 916. Press plate; 917. Cylindrical cavity; 92. Transmission shaft 2; 93. Driven bevel gear; 94. Driving bevel gear; 95. Rotating shaft 2; 96. Servo motor. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1 Reference Figure 1 、 2 , which is the first embodiment of the present invention, provides a ductile iron crankshaft casting device, including a base plate 1, a support seat 3 is movably provided on one side of the top of the base plate 1, and the two ends of the support seat 3 are respectively hinged to the dumping assembly 2, and the dumping assembly 2 is symmetrically fixedly installed on the base plate 1. The top two sides of the support seat 3 are respectively fixedly installed with a limit assembly 5, and the limit assembly 5 slides against the two sides of the top of the casting bucket 4, and the casting bucket 4 is arranged in the support seat 3; A base 8 is slidably connected to the other side of the top of the bottom plate 1, and a lower mold 7 is embedded on the top of the base 8. An upper mold 6 is provided on the top of the lower mold 7. Several clamping mechanisms 9 are respectively provided on both sides of the upper mold 6, and the clamping mechanisms 9 are fixedly connected to the base 8.

[0020] The casting bucket 4 is filled with molten iron for casting, and then the casting bucket 4 is placed in the U-shaped mouth of the support seat 3 through the lifting equipment. Before placement, the limiting component 5 is flush with the opening of the U-shaped mouth of the support seat 3, so as not to affect the placement of the casting bucket 4. After the casting bucket 4 is placed, the limiting component 5 cooperates with the support seat 3 to limit the casting bucket 4, the upper mold 6 and the lower mold 7 are closed, and then the lower mold 7 is placed in the fitting groove opened on the top of the base 8. Before placement, the length direction of the clamping mechanism 9 is flush with the length direction of the upper mold 6 and the lower mold 7, so as not to affect the upper mold 6 and After the lower mold 7 is placed, the clamping mechanism 9 works to clamp and limit the upper mold 6 to ensure the tightness and stability of the mold after closing. Finally, the pouring component 2 works, and the pouring component 2 drives the support seat 3 to lift and slowly tilt, and the molten iron in the casting bucket 4 is then cast into the mold. At the same time, the position of the base 8 can be adjusted according to the pouring position of the cast molten iron, so that the casting port of the upper mold 6 corresponds to the pouring molten iron. A funnel can also be set on the casting port of the upper mold 6, so the base 8 cannot be adjusted, and the position of the base 8 can be kept fixed.

[0021] Example 2 Reference Figure 1-6 , which is the second embodiment of the present invention, is based on the previous embodiment. Specifically, a U-shaped opening is opened on one side of the support seat 3. The setting of the U-shaped opening facilitates the placement of the casting bucket 4 inside, and the casting bucket 4 is concentrically located in the arc groove of the U-shaped opening.

[0022] Specifically, the middle of the top of the casting bucket 4 is fixedly connected to the two ends of the cross bar 41, and the middle of the top of the cross bar 41 is connected to a lifting ring 42 through a threaded structure. The setting of the lifting ring 42 facilitates the lifting and transportation of the casting bucket 4 by the lifting equipment.

[0023] Specifically, the limiting assembly 5 includes a support cylinder 51, a transmission shaft 52, a swinging mouth 53, a pressure strip 54, a worm gear 55, a worm 56, a rotating shaft 57, and a dual-output shaft stepper motor 58. The support cylinder 51 is fixedly connected to both sides of the top of the support seat 3 and the support cylinder 51 is symmetrically arranged at the eccentric position of the U-shaped mouth. The transmission shaft 52 is coaxially installed in the support cylinder 51, one side of the transmission shaft 52 is fixedly connected to one end of the pressure strip 54, and the other end of the pressure strip 54 slides out of the swinging mouth 53. The swinging mouth 53 is respectively opened on one side of the top of the support cylinder 51, and the other side of the transmission shaft 52 is rotatably installed on the support seat 3 and the other side end of the transmission shaft 52 is fixedly sleeved with the worm gear 55, the worm gear 55 is respectively meshed and connected to the worm 56, the worm 56 is respectively fixedly connected to one end of the rotating shaft 57, and the other end of the rotating shaft 57 is respectively fixedly connected to the two end output shafts of the dual-output shaft stepper motor 58, and the dual-output shaft stepper motor 58 is fixedly installed in the support seat 3.

[0024] Furthermore, the worm wheel 55 , the worm 56 , and the rotating shaft 1 57 are movably disposed in a hollow movable cavity at the bottom of the support base 3 .

[0025] The casting bucket 4 is filled with molten iron for casting, and then the casting bucket 4 is placed into the U-shaped opening of the support seat 3 through the lifting equipment. Before placement, the pressure strip 54 of the limiting component 5 is flush with the opening of the U-shaped opening of the support seat 3, which will not affect the placement of the casting bucket 4. After the casting bucket 4 is placed, the dual-output shaft stepper motor 58 of the limiting component 5 is powered on, and the dual-output shaft stepper motor 58 drives the fixed shaft 57 to rotate, and the shaft 57 drives the fixed worm 56 to rotate, and the worm 56 drives the meshing worm gear 55 to rotate, and the worm gear 55 drives the fixed transmission shaft 52 to rotate synchronously in the opposite direction, and the transmission shaft 52 drives the fixed pressure strip 54 to swing, and the pressure strip 54 then swings in the swing mouth 53. After the pressure strip 54 swings 90 degrees, it presses on the top of the casting bucket 4 and the length directions of the two pressure strips 54 overlap, and then cooperates with the support seat 3 to limit the casting bucket 4, preventing the casting bucket 4 from shaking during casting, thereby ensuring the stability of the casting bucket 4 during casting.

[0026] Specifically, the tipping assembly 2 includes a bracket 21, an upper hinge seat 22, an upper connecting rod 23, a middle hinge seat 24, a lower connecting rod 25, a hydraulic cylinder 26, and a lower hinge seat 27. One end of the bracket 21 is fixedly connected to the top of the base plate 1, and the brackets 21 are arranged parallel to each other. One side of the top of the bracket 21 is fixedly connected to one end of the upper hinge seat 22, and the other end of the upper hinge seat 22 is hinged to one end of the upper connecting rod 23, and the other end of the upper connecting rod 23 is hinged to the support seat 3. The bottom of the upper hinge seat 22 is provided with a middle hinge seat 24 of which one end is fixedly connected to the bracket 21, and the other end of the middle hinge seat 24 is hinged to one end of the lower connecting rod 25, and the other end of the lower connecting rod 25 is hinged to the support seat 3. The bottom end of the middle part of the lower connecting rod 25 is hinged to one end of the hydraulic cylinder 26, and the other end of the hydraulic cylinder 26 is hinged to the lower hinge seat 27, and the lower hinge seat 27 is fixedly connected to the bottom end of the bracket 21.

[0027] Furthermore, the axes of the upper connecting rod 23 and the lower connecting rod 25 at the ends away from the bracket 21 are arranged in the same plane.

[0028] The dumping assembly 2 works, and the hydraulic cylinder 26 of the dumping assembly 2 works. The hydraulic cylinder 26 drives the lower connecting rod 25 hinged at the end to swing with the middle hinge seat 24 as the center of the circle, and the lower connecting rod 25 drives the support seat 3 hinged at the end to lift. At the same time, the upper connecting rod 23 hinged on the support seat 3 swings synchronously, and the upper connecting rod 23 swings with the upper hinge seat 22 as the center of the circle, thereby driving the support seat 3 to lift and slowly tilt at the same time. The molten iron in the casting bucket 4 then casts the mold. At the same time, the position of the base 8 can be adjusted according to the pouring position of the cast molten iron, so that the casting port of the upper mold 6 corresponds to the pouring molten iron. A funnel can also be set on the casting port of the upper mold 6, so that the base 8 cannot be adjusted, and the position of the base 8 can be kept fixed.

[0029] Specifically, the bottoms of both ends of the upper mold 6 are fixedly connected to the fixing bars 61 , and the pressing mechanisms 9 are evenly distributed along the length direction of the base 8 and symmetrically arranged on both sides of the base 8 .

[0030] Specifically, the clamping mechanism 9 includes a compacting component 91, a transmission shaft 2 92, a driven bevel gear 93, a driving bevel gear 94, a rotating shaft 2 95, and a servo motor 96. The compacting component 91 is provided with multiple and the bottom ends of the multiple compacting components 91 are respectively fixedly connected to the base 8. The bottoms of the multiple compacting components 91 are respectively rotatably connected to one side of the transmission shaft 2 92, and the other sides of the transmission shaft 2 92 are respectively rotatably connected to the base 8 and the other side ends of the transmission shaft 2 92 are all rotated to extend into the rectangular cavity hollowed out at the bottom of the base 8. The other side ends of the transmission shaft 2 92 are all fixedly connected with the driven bevel gear 93, and the driven bevel gears 93 are respectively meshed and connected with the driving bevel gear 94. The driving bevel gears 94 are respectively fixedly sleeved on the rotating shaft 2 95. One end of the rotating shaft 2 95 is fixedly connected with the servo motor 96, and the servo motor 96 is fixedly installed in the rectangular cavity in the base 8.

[0031] Furthermore, the compacting assembly 91 includes a fixed column 911, a threaded rod 912, a vertical guide port 913, a horizontal guide port 914, an internal threaded ring 915, a pressure plate 916, and a cylindrical cavity 917. The bottom end of the fixed column 911 is fixedly connected to the base 8. A cylindrical cavity 917 is provided in the hollow of the fixed column 911. A threaded rod 912 is coaxially mounted in the cylindrical cavity 917. The outer surface of the threaded rod 912 is connected to the internal threaded ring 915 through a threaded structure. The outer wall of the internal threaded ring 915 is fixedly connected to the pressure plate 916. One end, the other end of the pressure plate 916 slides out of the horizontal guide opening 914, the horizontal guide opening 914 is opened on the top side of the cylindrical cavity 917 and one end of the horizontal guide opening 914 is connected to one end of the vertical guide opening 913, the vertical guide opening 913 is opened on the fixed column 911, the opening width of the vertical guide opening 913 is equal to the width of the pressure plate 916, the height of the horizontal guide opening 914 is equal to the height of the pressure plate 916, and the bottom end of the threaded rod 912 is connected to the transmission shaft 2 92 through the bevel gear transmission structure.

[0032] The servo motor 96 of the clamping mechanism 9 is powered on and works, and the servo motor 96 drives the fixed rotating shaft 2 95 to rotate, and the rotating shaft 2 95 drives the fixed active bevel gear 94 to rotate synchronously, and the active bevel gear 94 drives the meshing driven bevel gear 93 to rotate, and the driven bevel gear 93 then drives the fixed transmission shaft 2 92 to rotate, and the transmission shaft 2 92 drives the compacting components 91 on both sides of the base 8 to work through the bevel gear transmission structure, and the threaded rods 912 of the compacting components 91 on both sides rotate synchronously in different directions. Since the threaded structure has self-locking properties, the internal threaded ring 915 is driven to rotate when the threaded rod 912 rotates, and the internal threaded ring 915 drives the fixed pressure plate 916 to swing along the length direction of the horizontal guide port 914 When the pressure plate 916 moves to the end of the horizontal guide port 914, that is, the pressure plate 916 swings 90 degrees, due to the limit at the end of the horizontal guide port 914, the pressure plate 916 will move downward along the length direction of the vertical guide port 913 driven by the threaded structure, that is, the length direction of the pressure plate 916 swings from the state of being flush with the length direction of the upper mold 6 to the state of the length direction of the pressure plate 916 being perpendicular to the length direction of the upper mold 6, and then the pressure plate 916 presses down and contacts the fixing bar 61, and the pressure plate 916 cooperates with the fixing bar 61 to clamp and limit the upper mold 6. After clamping, the servo motor 96 is powered off and stopped, thereby ensuring the tightness and stability of the mold after closing. The entire casting work reduces the participation of personnel and improves the safety during the casting operation.

[0033] Example 3 Reference Figure 1-6, which is the third embodiment of the present invention. This embodiment is based on the above two embodiments. When in use, the casting bucket 4 is filled with molten iron for casting, and then the casting bucket 4 is placed in the U-shaped mouth of the support seat 3 through the lifting equipment. Before placement, the pressure strip 54 of the limiting component 5 is flush with the opening of the U-shaped mouth of the support seat 3, which will not affect the placement of the casting bucket 4. After the casting bucket 4 is placed, the dual-output shaft stepper motor 58 of the limiting component 5 is energized to work, and the dual-output shaft stepper motor 58 drives the fixed rotating shaft 1 57 to rotate, and the rotating shaft 1 57 drives the fixed worm 56 to rotate, and the worm 56 drives the meshing worm gear 55 to rotate, and the worm gear 55 drives the fixed transmission shaft 1 52 to rotate synchronously in the opposite direction, and the transmission shaft 1 52 drives the fixed pressure strip 54 to swing, and the pressure strip 54 moves While swinging in the swinging mouth 53, the pressure strip 54 is pressed on the top of the casting bucket 4 after swinging 90 degrees, and the length directions of the two pressure strips 54 coincide, and then the casting bucket 4 is limited by the support seat 3, and the upper mold 6 and the lower mold 7 are molded, and then the lower mold 7 is placed in the fitting groove opened on the top of the base 8. Before placement, the length direction of the pressure plate 916 of the clamping mechanism 9 is flush with the length direction of the upper mold 6 and the lower mold 7, and thus will not affect the placement of the upper mold 6 and the lower mold 7. After the placement is completed, the servo motor 96 of the clamping mechanism 9 is energized to work, and the servo motor 96 drives the fixed rotating shaft 2 95 to rotate, and the rotating shaft 2 95 drives the fixed active bevel gear 94 to rotate synchronously, and the active bevel gear 94 respectively drives the meshing driven bevel gear 93 to rotate, and the driven bevel gear 9 3 and then respectively drive the fixed transmission shaft 2 92 to rotate, and the transmission shaft 2 92 drives the compacting components 91 on both sides of the base 8 to work through the bevel gear transmission structure. The threaded rods 912 of the compacting components 91 on both sides rotate synchronously in different directions. Since the threaded structure has self-locking properties, the internal threaded ring 915 is driven to rotate when the threaded rod 912 rotates, and the internal threaded ring 915 drives the fixed pressure plate 916 to swing along the length direction of the horizontal guide opening 914. When the pressure plate 916 moves to the end of the horizontal guide opening 914, that is, the pressure plate 916 swings 90 degrees, due to the limit of the end of the horizontal guide opening 914, the pressure plate 916 will move downward along the length direction of the vertical guide opening 913 under the drive of the threaded structure, that is, the length direction of the pressure plate 916 is changed from the state of being flush with the length direction of the upper mold 6 to the state of being flush with the length direction of the upper mold 6. It swings down until the length direction of the pressing plate 916 is perpendicular to the length direction of the upper mold 6, and then the pressing plate 916 presses down and contacts the fixing bar 61. The pressing plate 916 cooperates with the fixing bar 61 to clamp and limit the upper mold 6. After clamping, the servo motor 96 is powered off and stopped, thereby ensuring the tightness and stability of the mold after mold closing. Finally, the dumping component 2 works, and the hydraulic cylinder 26 of the dumping component 2 works. The hydraulic cylinder 26 drives the lower connecting rod 25 hinged at the end to swing with the middle hinge seat 24 as the center of the circle, and the lower connecting rod 25 drives the support seat 3 hinged at the end to lift. At the same time, the upper connecting rod 23 hinged on the support seat 3 swings synchronously, and the upper connecting rod 23 swings with the upper hinge seat 22 as the center of the circle, thereby driving the support seat 3 to lift while slowly tilting, and the molten iron in the casting bucket 4 then casts the mold.At the same time, the position of the base 8 can be adjusted according to the pouring position of the molten iron, so that the pouring port of the upper mold 6 corresponds to the pouring molten iron. A funnel can also be set on the pouring port of the upper mold 6, so that the base 8 cannot be adjusted and the position of the base 8 can be kept fixed.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A ductile iron crankshaft casting device, comprising a base plate (1), characterized in that: A support seat (3) is movably provided on one side of the top of the base plate (1), and both ends of the support seat (3) are hingedly connected to the dumping assembly (2), and the dumping assembly (2) is symmetrically fixedly installed on the base plate (1). Limiting assemblies (5) are fixedly installed on both sides of the top of the support seat (3), and the limiting assemblies (5) are respectively slidably pressed against both sides of the top of the casting bucket (4), and the casting bucket (4) is arranged in the support seat (3); A base (8) is slidably engaged on the other side of the top of the bottom plate (1), a lower mold (7) is engaged on the top of the base (8), an upper mold (6) is provided on the top of the lower mold (7), and a plurality of clamping mechanisms (9) are respectively provided on both sides of the upper mold (6), and the clamping mechanisms (9) are fixedly connected to the base (8).

2. The ductile iron crankshaft casting equipment according to claim 1, characterized in that: A U-shaped opening is provided on one side of the support seat (3).

3. The ductile iron crankshaft casting equipment according to claim 1, characterized in that: The middle portion of the top end of the casting bucket (4) is fixedly connected to both ends of a cross bar (41), and the middle portion of the top end of the cross bar (41) is connected to a hanging ring (42) via a threaded structure.

4. The ductile iron crankshaft casting equipment according to claim 2, characterized in that: The limiting assembly (5) includes a support tube (51), a transmission shaft (52), a swinging mouth (53), a pressure strip (54), a worm wheel (55), a worm (56), a rotating shaft (57), and a dual-output shaft stepper motor (58). The support tube (51) is respectively fixedly connected to both sides of the top of the support seat (3) and the support tube (51) is symmetrically arranged at the eccentric position of the U-shaped mouth. The transmission shaft (52) is respectively coaxially rotatably installed in the support tube (51). One side of the transmission shaft (52) is respectively fixedly connected to one end of the pressure strip (54), and the other end of the pressure strip (54) is respectively slidable through the swinging mouth. The swing opening (53) is respectively opened on one side of the top of the support cylinder (51), the other side of the transmission shaft (52) is respectively rotatably mounted on the support base (3) and the other end of the transmission shaft (52) is respectively fixedly sleeved with a worm gear (55), the worm gear (55) is respectively engaged with a worm (56), the worm (56) is respectively fixedly connected to one end of the rotating shaft (57), and the other end of the rotating shaft (57) is respectively fixedly connected to the two end output shafts of the dual-output shaft stepper motor (58), and the dual-output shaft stepper motor (58) is fixedly mounted in the support base (3).

5. The ductile iron crankshaft casting equipment according to claim 4, characterized in that: The worm wheel (55), the worm (56), and the rotating shaft (57) are movably arranged in a hollow movable cavity at the bottom of the support seat (3).

6. The ductile iron crankshaft casting equipment according to claim 1, characterized in that: The tipping assembly (2) comprises a bracket (21), an upper hinge seat (22), an upper connecting rod (23), a middle hinge seat (24), a lower connecting rod (25), a hydraulic cylinder (26), and a lower hinge seat (27). One end of the bracket (21) is fixedly connected to the top of the base plate (1). The brackets (21) are arranged parallel to each other. One side of the top of the bracket (21) is fixedly connected to one end of the upper hinge seat (22). The other end of the upper hinge seat (22) is hinged to one end of the upper connecting rod (23). The other end of the upper connecting rod (23) is hinged to one end of the upper connecting rod (23). The ends are respectively hinged to the support seat (3), the bottom of the upper hinge seat (22) is provided with a middle hinge seat (24) whose one end is respectively fixed to the bracket (21), the other end of the middle hinge seat (24) is respectively hinged to one end of the lower connecting rod (25), the other end of the lower connecting rod (25) is respectively hinged to the support seat (3), the middle bottom end of the lower connecting rod (25) is respectively hinged to one end of the hydraulic cylinder (26), the other end of the hydraulic cylinder (26) is respectively hinged to the lower hinge seat (27), and the lower hinge seat (27) is respectively fixed to the bottom end of the bracket (21).

7. The ductile iron crankshaft casting equipment according to claim 6, characterized in that: The axes of the upper connecting rod (23) and the lower connecting rod (25) at one end away from the bracket (21) are arranged in the same plane.

8. The ductile iron crankshaft casting equipment according to claim 1, characterized in that: The bottoms of both ends of the upper mold (6) are respectively fixedly connected to fixing bars (61), and the pressing mechanisms (9) are evenly distributed along the length direction of the base (8) and symmetrically arranged on both sides of the base (8).

9. The ductile iron crankshaft casting equipment according to claim 8, characterized in that: The pressing mechanism (9) includes a compacting component (91), a second transmission shaft (92), a driven bevel gear (93), a driving bevel gear (94), a second rotating shaft (95), and a servo motor (96). The compacting component (91) is provided with a plurality of compacting components (91), and the bottom ends of the plurality of compacting components (91) are respectively fixedly connected to the base (8). The bottom ends of the plurality of compacting components (91) are respectively rotatably connected to one side of the second transmission shaft (92), and the other side of the second transmission shaft (92) is respectively rotatably connected to the base (8) and the transmission shaft The other end of the second (92) is rotated to extend into the rectangular cavity provided in the hollow bottom of the base (8), and the other end of the second transmission shaft (92) is fixedly connected to a driven bevel gear (93), and the driven bevel gear (93) is respectively engaged with the driving bevel gear (94), and the driving bevel gear (94) is respectively fixedly sleeved on the second rotating shaft (95), and one end of the second rotating shaft (95) is fixedly connected to a servo motor (96), and the servo motor (96) is fixedly installed in the rectangular cavity in the base (8).

10. The ductile iron crankshaft casting equipment according to claim 9, characterized in that: The compacting assembly (91) comprises a fixed column (911), a threaded rod (912), a vertical guide opening (913), a horizontal guide opening (914), an internal threaded ring (915), a pressure plate (916), and a cylindrical cavity (917). The bottom end of the fixed column (911) is fixedly connected to the base (8). The fixed column (911) is hollowed and provided with a cylindrical cavity (917). A threaded rod (912) is coaxially rotatably installed in the cylindrical cavity (917). The outer surface of the threaded rod (912) is sleeved with the internal threaded ring (915) through a threaded structure. The outer wall of the internal threaded ring (915) is fixedly connected to the pressure plate (916). ), the other end of the pressure plate (916) slides through the horizontal guide opening (914), the horizontal guide opening (914) is opened on one side of the top end of the cylindrical cavity (917) and one end of the horizontal guide opening (914) is connected to one end of the vertical guide opening (913), the vertical guide opening (913) is opened on the fixed column (911), the opening width of the vertical guide opening (913) is equal to the width of the pressure plate (916), the height of the horizontal guide opening (914) is equal to the height of the pressure plate (916), and the bottom end of the threaded rod (912) is connected to the transmission shaft 2 (92) through a bevel gear transmission structure.

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