CN114406255A

CN114406255A - Lost foam casting system

Info

Publication number: CN114406255A
Application number: CN202210113470.3A
Authority: CN
Inventors: 张文琴
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-30
Filing date: 2022-01-30
Publication date: 2022-04-29

Abstract

The invention discloses a lost foam casting system which comprises a bottom plate and an outer sandbox, wherein a first motor is fixedly arranged at the upper end of the bottom plate, and a first gear is fixedly arranged at the output end of the upper end of the first motor. The model is arranged above the circular plate, and then is extruded and fixed through the extrusion mechanism, then the first electric push rod is started, the first electric push rod drives the first piston plate to move upwards, so that sand grains in the outer sand box move upwards, the vibrator is started at the same time, the vibrator drives the first piston plate to vibrate, so that the sand grains vibrate, the sand grains are filled into the inner sand box after passing through the gap between the supporting rods, the sand grains vibrate by utilizing vibration, so that the phenomenon that the supporting rods are fixed during movement of the sand grains to cause incapability of filling is prevented, the vibrated sand grains can effectively prevent empty drums, and the problem of casting quality caused by sand grain collapse during casting is prevented.

Description

Lost foam casting system

Technical Field

The invention relates to the field of casting, in particular to a lost foam casting system.

Background

Lost foam casting (also called solid casting) is a novel casting method which comprises the steps of bonding and combining paraffin or foam models with similar sizes and shapes to form a model cluster, coating refractory paint on the model cluster, drying the model cluster, burying the model cluster in dry quartz sand for vibration modeling, pouring under negative pressure to gasify the model, enabling liquid metal to occupy the position of the model, solidifying and cooling the model cluster to form a casting.

Present lost foam casting system settles the model inside the sand bucket earlier when using, then the manual work is filled in sand, and the manual work is filled in sand speed slowly, and cause the hollowing easily when filling, the drum part can collapse when the casting, thereby lead to as cast spare part shape change, thereby cause the waste product, and need artifical handheld casting when the casting, great potential safety hazard has, manual control casting volume when the casting simultaneously, thereby general casting volume can exceed required raw materials greatly, thereby make the casting raw materials too much, and too much raw materials need more energy to make the raw materials heat to the molten condition, thereby comparatively consume the energy, so need a device to solve above-mentioned problem promptly.

Disclosure of Invention

The present invention is directed to a lost foam casting system, which solves the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a lost foam casting system comprises a bottom plate and an outer sand box, wherein a first motor is fixedly arranged at the upper end of the bottom plate, a first gear is fixedly arranged at the upper end output end of the first motor, a movable shaft is movably inserted at the upper end of the bottom plate, a second gear is fixedly arranged at the outer end position of the movable shaft in a surrounding manner, a bearing plate is fixedly arranged at the upper end position of the movable shaft, a casting mechanism is arranged at the upper end position of the bearing plate, an extrusion mechanism is arranged at the upper end position of the outer sand box, a measuring mechanism is arranged at the right side position of the upper end of the bottom plate, an inner sand box is fixedly arranged at the upper end position in the outer sand box, a supporting rod is fixedly arranged at the bottom end of the inner sand box, a circular plate is fixedly arranged at one side of the supporting rod, and a first piston plate is movably arranged at the inner position of the outer sand box, a first electric push rod is fixedly arranged at the lower end of the first piston plate, a damping mechanism is arranged at the lower end of the first electric push rod, a vibrator is fixedly arranged at the lower end of the first piston plate, when in use, the model is arranged at the position above the circular plate, then the model is extruded and fixed by the extrusion mechanism, then the first electric push rod is started, the first electric push rod drives the first piston plate to move upwards, thereby enabling the sand grains in the outer sand box to move upwards, simultaneously starting the vibrator, driving the first piston plate to vibrate by the vibrator, thereby leading the sand grains to vibrate, leading the sand grains to pass through the gaps between the support rods and then be filled into the inner sand box, leading the sand grains to vibrate by utilizing the vibration, thereby prevent that the sand grain from being fixed when removing and leading to unable packing by the extrusion bracing piece to the sand grain of vibration can effectively prevent the appearance of hollowing, prevents the casting quality problem that the sand grain collapsed and caused when the casting.

Preferably, damper includes settling tank, first fixed plate, second fixed plate, telescopic link and first spring, settling tank has been seted up to the inside bottom position of outer sandbox, settling tank bottom position fixed mounting is provided with the second fixed plate, second fixed plate upper end position fixed mounting is provided with the telescopic link, telescopic link upper end position fixed mounting is provided with first fixed plate, first fixed plate upper end is fixed at first electric putter lower extreme position, fixed connection in position is provided with first spring between first fixed plate and the second fixed plate, first spring encircles and sets up in the telescopic link outside, and when the vibrator vibrates, utilizes first spring cooperation telescopic link to carry out buffering work, prevents that the vibration makes first electric putter and outer sandbox inside wall rigid contact cause first electric putter to damage.

Preferably, the extrusion mechanism comprises an L-shaped rod, a vertical rod, a loop bar, a second spring and an extrusion plate, the damping movable installation at the upper end position of the outer sand box is provided with the L-shaped rod, the vertical rod is vertically and fixedly installed at the lower end position of the L-shaped rod, the loop bar is movably sleeved at the lower end position of the vertical rod, the extrusion plate is horizontally and fixedly installed at the lower end position of the loop bar, the second spring is fixedly connected between the inner part of the loop bar and the bottom end of the vertical rod, the extrusion plate is moved by a user after the model is placed and completed, the extrusion plate is moved to the upper end position of the model, and the second spring is in a compression state, so that the model is extruded by utilizing the elasticity of the second spring, the model is fixed, the vibration is prevented, the model is separated from a placement position, and the L-shaped rod is rotated after sand filling is completed to keep away from the upper end of the outer sand box.

Preferably, the measuring mechanism comprises a clamping mechanism, a water storage tank, a transparent plate, scale marks, a second electric push rod and a cross rod, the upper end of the bottom plate is fixedly provided with the second electric push rod, the upper end of the second electric push rod is horizontally and fixedly provided with the cross rod, the lower end of the cross rod is fixedly provided with the clamping mechanism, the upper end of the bottom plate is fixedly provided with the water storage tank, the front end of the water storage tank is fixedly provided with the transparent plate, and the scale marks are arranged on the transparent plate in a carving manner.

Preferably, the clamping mechanism comprises a hollow block, a third electric push rod, an extrusion plate, a hollow cylinder, an extension groove and a clamping rod, the hollow block is fixedly arranged at the lower end of the cross rod, hydraulic oil is filled in the hollow block, the third electric push rod is horizontally and fixedly arranged at the right end of the hollow block, the extrusion plate is fixedly arranged at the left side of the third electric push rod, the hollow cylinder is fixedly arranged at the lower end of the hollow block, the extension groove is formed in the inner position of the hollow cylinder, the clamping rod is movably clamped in the extension groove, the model is placed in the hollow cylinder when the clamping mechanism is used, the third electric push rod is started to drive the extrusion plate to move to the left side, so that the hydraulic oil is pushed into the hollow cylinder, the hydraulic oil is injected into the extension groove, and the clamping rod is extruded to move until the model is clamped and fixed, then drive the horizontal pole through second electric putter and move down, make inside the model submerges the storage water tank completely, thereby make the surface of water rise, the volume of model is calculated so, thereby conveniently confirm the concrete use volume of raw materials, prevent the raw materials excessive use, thereby prevent to consume more energy when the heating melts, thereby reach the purpose of energy saving, and the supporting rod has a plurality ofly, every supporting rod centre gripping is fixed the back and all can't remove again when the centre gripping, and the fixed supporting rod of centre gripping continues to move, so make things convenient for the model of centre gripping different shapes, the application scope of system is improved.

Preferably, the casting mechanism comprises an air pressure balancing mechanism, a second piston plate, a second motor, a stirring rod, a rubber ring, an electric heating plate, an electromagnetic valve, a discharge pipe, a heating box, a cover plate, a screw rod, a screw sleeve, a third gear and a fourth gear, the heating box is fixedly arranged at the upper end of the bearing plate, the cross section of the heating box is rectangular, the electric heating plate is fixedly arranged at the two side end positions in the heating box, the discharge pipe is fixedly arranged at the lower end position of the heating box, the electromagnetic valve is fixedly arranged at the upper end of the discharge pipe, the cover plate is fixedly arranged at the upper end position of the heating box, the second motor is fixedly arranged at the lower end center position of the cover plate, the stirring rod is fixedly arranged at the output end position of the second motor, the second piston plate is movably clamped in the heating box, the rubber ring is fixedly arranged at the center position in the second piston plate, the stirring rod movably penetrates through the center of the rubber ring, the inner diameter of the rubber ring is smaller than the outer diameter of the stirring rod, a fourth gear is arranged on the outer side of the stirring rod in a surrounding and fixed mode, a threaded sleeve is fixedly arranged on the left side of the second piston plate, a screw rod is movably arranged on the lower end of the cover plate, the lower end of the screw rod penetrates into the threaded sleeve through threads, a third gear is arranged on the outer side of the screw rod in a surrounding and fixed mode, the third gear is meshed with the fourth gear, the number of teeth of the third gear is larger than the number of teeth of the fourth gear, materials to be melted are sent into the inner position of the heating box, then an electric heating plate is started to heat the materials to be melted, the second motor is started to heat the materials to be melted, the stirring rod is driven to stir by the second motor, the materials are uniformly heated when being melted, the melting of the materials far away from a heat source is accelerated, and when the stirring rod rotates, make the fourth gear revolve to drive third gear revolve, thereby make the screw rod rotate around the swivel nut, the swivel nut drives second piston plate rebound along screw rod rebound, makes second piston plate lower extreme form the negative pressure, thereby makes the inside air of melting the raw materials spill over, prevents that the air from remaining the hole that produces when casting.

Preferably, the air pressure balance mechanism comprises a first vertical pipe, a second vertical pipe, a fixing ring, a ball and a third spring, the second vertical pipe is fixedly and vertically arranged on the right side of the second piston plate, the first vertical pipe is movably sleeved at the upper end inside the second vertical pipe, the upper end of the first vertical pipe is fixedly arranged at the lower end of the cover plate and communicated with the outside, a hollow needle is fixedly arranged at the lower end of the first vertical pipe, the fixing ring is fixedly arranged inside the second vertical pipe, the fixing ring is provided with two ends, the third spring is fixedly arranged at the upper end of the fixing ring, the ball is fixedly arranged at the upper end of the third spring and clings to the lower end of the fixing ring at the upper end, so that the central position of the upper end fixing ring is conveniently sealed, when the second piston plate moves upwards, the second vertical pipe moves upwards, until hollow needle extrusion ball downstream, the third spring is extruded this moment, gu fixed ring makes second piston plate lower extreme and external intercommunication, thereby guarantee atmospheric pressure, later open the solenoid valve, the discharge pipe carries out the casting work with raw materials discharge, need not the manual work and pour, the casting security has been improved greatly, after the casting is accomplished, start first motor, first motor drives first gear revolve, thereby make second gear revolve, it rotates to drive the piston shaft, make casting mechanism keep away from outer sandbox upper end, thereby make things convenient for the work of taking out of product.

Preferably, the first gear is meshed with the second gear.

Preferably, a rubber pad is fixedly arranged around the outer side of the first piston plate.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the model is arranged at the position above the circular plate, then the model is extruded and fixed through the extrusion mechanism, then the first electric push rod is started, the first electric push rod drives the first piston plate to move upwards, so that sand grains in the outer sand box move upwards, meanwhile, the vibrator is started, the vibrator drives the first piston plate to vibrate, so that the sand grains vibrate, the sand grains are filled into the inner sand box after passing through the gap between the supporting rods, the vibration is utilized to vibrate the sand grains, so that the situation that the sand grains cannot be filled due to the fact that the supporting rods are fixed when the sand grains move is prevented, the vibrated sand grains can effectively prevent empty drums, and the problem of casting quality caused by sand grain collapse during casting is prevented;

2. the invention arranges the model in the hollow cylinder, then starts the third electric push rod to drive the extrusion plate to move to the left side, thereby pushing the hydraulic oil into the hollow cylinder, leading the hydraulic oil to be injected into the extension groove and extruding the clamping rods to move until the model is clamped and fixed, then the cross bar is driven to move downwards by the second electric push rod, so that the model is completely immersed into the water storage tank, thereby the water surface rises, the volume of the model is calculated, thereby the specific use volume of the raw materials is convenient to determine, the excessive use of the raw materials is prevented, thereby preventing more energy consumption during heating and melting, achieving the purpose of saving energy, and a plurality of clamping rods, when in clamping, each clamping rod cannot move after being clamped and fixed, and the clamping rods which are not clamped and fixed can continue to move, so that models with different shapes can be conveniently clamped, and the application range of the system is improved;

3. according to the invention, a material to be melted is fed into the heating box, then the electric heating plate is started to heat, so that the raw material is heated to a melting state, the second motor is started during heating, the second motor drives the stirring rod to stir, the raw material is uniformly heated during melting, the melting of the raw material far away from a heat source is accelerated, and simultaneously, when the stirring rod rotates, the fourth gear rotates and drives the third gear to rotate, so that the screw rod rotates around the screw sleeve, the screw sleeve moves upwards along the screw rod, the second piston plate is driven to move upwards, the lower end of the second piston plate forms negative pressure, so that air in the melted raw material overflows, and holes generated by air residue during casting are prevented;

4. when the second piston plate moves upwards, the second vertical pipe moves upwards until the hollow needle extrudes the ball to move downwards, the third spring is extruded at the moment, the lower end of the second piston plate is communicated with the outside through the fixing ring, air pressure is guaranteed, then the electromagnetic valve is opened, the raw materials are discharged through the discharge pipe to carry out casting work, manual casting is not needed, casting safety is greatly improved, and after casting is finished, the first motor is started, drives the first gear to rotate, so that the second gear rotates, drives the piston shaft to rotate, and the casting mechanism is far away from the upper end of the outer sand box, so that the product can be conveniently taken out.

Drawings

FIG. 1 is a schematic view of the overall structure of a lost foam casting system according to the present invention;

FIG. 2 is a schematic structural diagram of a clamping mechanism in the lost foam casting system according to the present invention;

FIG. 3 is a bottom view of a hollow cylinder in a lost foam casting system of the present invention;

FIG. 4 is a schematic structural diagram of a casting mechanism in the lost foam casting system according to the present invention;

FIG. 5 is an enlarged view of A2 of FIG. 4 in a lost foam casting system of the present invention;

FIG. 6 is a cross-sectional view of an outer sandbox in a lost foam casting system according to the present invention;

FIG. 7 is an enlarged view of A1 of FIG. 6 of the lost foam casting system of the present invention.

In the figure: 1. a base plate; 2. a first motor; 3. an outer sandbox; 4. an inner sandbox; 5. a first gear; 6. a second gear; 7. a movable shaft; 8. a carrier plate; 9. a casting mechanism; 10. a clamping mechanism; 11. a second electric push rod; 12. a cross bar; 13. a water storage tank; 14. a transparent plate; 15. scale lines; 16. a circular plate; 17. a support bar; 18. a first piston plate; 19. a vibrator; 20. a first electric push rod; 21. a placing groove; 22. a first fixing plate; 23. a first spring; 24. a second fixing plate; 25. a telescopic rod; 26. an L-shaped rod; 27. a vertical rod; 28. a loop bar; 29. a pressing plate; 30. a second spring; 31. a hollow block; 32. a third electric push rod; 33. a pressing plate; 34. a hollow cylinder; 35. a clamping rod; 36. an extension groove; 37. a cover plate; 38. a heating box; 39. an electric hot plate; 40. a second motor; 41. a screw; 42. a third gear; 43. a fourth gear; 44. a second piston plate; 45. a rubber ring; 46. a stirring rod; 47. a threaded sleeve; 48. a discharge pipe; 49. an electromagnetic valve; 50. a first vertical pipe; 51. a fixing ring; 52. a ball bearing; 53. a third spring; 54. a second vertical pipe; 55. a measuring mechanism; 56. an air pressure balancing mechanism; 57. an extrusion mechanism; 58. a shock absorbing mechanism.

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 lost foam casting system comprises a bottom plate 1 and an outer sandbox 3, wherein a first motor 2 is fixedly arranged at the upper end position of the bottom plate 1, a first gear 5 is fixedly arranged at the upper end output end position of the first motor 2, a movable shaft 7 is movably and alternately arranged at the upper end position of the bottom plate 1, a second gear 6 is fixedly arranged at the outer end position of the movable shaft 7 in a surrounding manner, the first gear 5 is meshed with the second gear 6, a bearing plate 8 is fixedly arranged at the upper end position of the movable shaft 7, a casting mechanism 9 is arranged at the upper end position of the bearing plate 8, an extruding mechanism 57 is arranged at the upper end position of the outer sandbox 3, a measuring mechanism 55 is arranged at the right side position of the upper end of the bottom plate 1, an inner sandbox 4 is fixedly arranged at the inner upper end position of the outer sandbox 3, a support rod 17 is fixedly arranged at the bottom end of the inner sandbox 4, a circular plate 16 is fixedly arranged on one side of the supporting rod 17, a first piston plate 18 is movably arranged in the outer sand box 3, a rubber pad is fixedly arranged on the outer side of the first piston plate 18 in a surrounding manner, a first electric push rod 20 is fixedly arranged at the lower end of the first piston plate 18, a damping mechanism 58 is arranged at the lower end of the first electric push rod 20, a vibrator 19 is fixedly arranged at the lower end of the first piston plate 18, when the model is used, the model is arranged above the circular plate 16 and is extruded and fixed through an extruding mechanism 57, then the first electric push rod 20 is started, the first electric push rod 20 drives the first piston plate 18 to move upwards, so that sand grains in the outer sand box 3 move upwards, the vibrator 19 is started at the same time, the vibrator 19 drives the first piston plate 18 to vibrate, so that the sand grains vibrate, and the sand grains are filled in the inner sand box 4 after passing through the gap position between the supporting rods 17, utilize the vibration to make the sand grain vibration to prevent that the sand grain from being fixed when removing extrusion bracing piece 17 and leading to unable packing, and the sand grain of vibration can effectively prevent the appearance of hollowing, prevent the casting quality problem that the sand grain collapsed and caused when the casting.

The shock absorption mechanism 58 comprises a placing groove 21, a first fixing plate 22, a second fixing plate 24, a telescopic rod 25 and a first spring 23, a placing groove 21 is arranged at the bottom end position inside the outer sand box 3, a second fixing plate 24 is fixedly arranged at the bottom end position of the placing groove 21, the upper end of the second fixing plate 24 is fixedly provided with a telescopic rod 25, the upper end of the telescopic rod 25 is fixedly provided with a first fixing plate 22, the upper end of the first fixing plate 22 is fixed at the lower end of the first electric push rod 20, a first spring 23 is fixedly connected between the first fixing plate 22 and the second fixing plate 24, the first spring 23 is arranged around the outer side of the telescopic rod 25, when the vibrator 19 vibrates, the first spring 23 is matched with the telescopic rod 25 to perform buffering work, so that the first electric push rod 20 is prevented from being damaged due to the fact that the first electric push rod 20 is in hard contact with the inner side wall of the outer sand box 3 due to vibration.

The squeezing mechanism 57 comprises an L-shaped rod 26, a vertical rod 27, a loop bar 28, a second spring 30 and a squeezing plate 29, the L-shaped rod 26 is movably mounted at the upper end of the outer sandbox 3 in a damping mode, the vertical rod 27 is fixedly mounted at the lower end of the L-shaped rod 26 in a vertical mode, the loop bar 28 is movably sleeved at the lower end of the vertical rod 27 in a movable mode, the squeezing plate 29 is horizontally and fixedly mounted at the lower end of the loop bar 28, the second spring 30 is fixedly connected between the inner portion of the loop bar 28 and the bottom end of the vertical rod 27 in a position, the squeezing plate 29 is moved by a user after the model is placed, the squeezing plate 29 is moved to the upper end of the model, and the second spring 30 is in a compression state, so that the model is squeezed by the elasticity of the second spring 30, is fixed, and the model is prevented from being separated from the placing position due to vibration.

Measuring mechanism 55 includes fixture 10, storage water tank 13, transparent plate 14, scale mark 15, second electric putter 11 and horizontal pole 12, 1 upper end fixed position of bottom plate installs and is provided with second

electric putter

11, 11 upper end position horizontal fixed installations of second electric putter are provided with

horizontal pole

12, 12 lower extreme fixed position of horizontal pole installs and is provided with fixture 10, 1 upper end fixed position of bottom plate installs and is provided with

storage water tank

13, 13 front end fixed installations of storage water tank are provided with transparent plate 14, the last portrayal of transparent plate 14 is provided with scale mark 15.

The clamping mechanism 10 comprises a hollow block 31, a third electric push rod 32, an extrusion plate 33, a hollow cylinder 34, an extension groove 36 and a clamping rod 35, the lower end of the cross bar 12 is fixedly provided with the hollow block 31, the inner position of the hollow block 31 is filled with hydraulic oil, the right end of the hollow block 31 is horizontally and fixedly provided with the third electric push rod 32, the left side of the third electric push rod 32 is fixedly provided with the extrusion plate 33, the lower end of the hollow block 31 is fixedly provided with the hollow cylinder 34, the inner position of the hollow cylinder 34 is provided with the extension groove 36, the clamping rod 35 is movably clamped and connected inside the extension groove 36, when the clamping mechanism is used, a model is arranged inside the hollow cylinder 34, then the third electric push rod 32 is started to drive the extrusion plate 33 to move to the left side, so that the hydraulic oil is pushed into the hollow cylinder 34, and is injected into the extension groove 36, and extrusion supporting rod 35 removes, until fixed with the model centre gripping, then drive horizontal pole 12 downstream through second electric putter 11, make the model submerge the storage water tank 13 inside completely, thereby make the surface of water rise, so calculate the volume of model, thereby conveniently confirm the raw materials concrete use volume, prevent the excessive use of raw materials, thereby prevent to consume more energy when the heating melts, thereby reach the purpose of energy saving, and supporting rod 35 has a plurality ofly, every supporting rod 35 centre gripping is fixed the back and all can't remove again when the centre gripping, and the fixed supporting rod 35 of centre gripping continues to move, so make things convenient for the model of centre gripping different shapes, improve the application scope of system.

The casting mechanism 9 comprises an air pressure balancing mechanism 56, a second piston plate 44, a second motor 40, a stirring rod 46, a rubber ring 45, an electric heating plate 39, an electromagnetic valve 49, a discharge pipe 48, a heating box 38, a cover plate 37, a screw rod 41, a threaded sleeve 47, a third gear 42 and a fourth gear 43, the heating box 38 is fixedly installed at the upper end of the bearing plate 8, the cross section of the heating box 38 is rectangular, the electric heating plate 39 is fixedly installed at both side end positions inside the heating box 38, the discharge pipe 48 is fixedly installed at the lower end position of the heating box 38, the electromagnetic valve 49 is fixedly installed at the upper end of the discharge pipe 48, the cover plate 37 is fixedly installed at the upper end position of the heating box 38, the second motor 40 is fixedly installed at the lower end center position of the cover plate 37, the stirring rod 46 is fixedly installed at the output end position of the second motor 40, the second piston plate 44 is movably clamped inside the heating box 38, the rubber ring 45 is fixedly arranged at the central position in the second piston plate 44, the stirring rod 46 movably penetrates through the central position of the rubber ring 45, the inner diameter of the rubber ring 45 is smaller than the outer diameter of the stirring rod 46, the fourth gear 43 is arranged on the outer side of the stirring rod 46 in a surrounding manner and fixedly arranged, the threaded sleeve 47 is fixedly arranged on the left side of the second piston plate 44, the screw 41 is movably arranged at the lower end of the cover plate 37, the lower end of the screw 41 penetrates into the threaded sleeve 47 through threads, the third gear 42 is arranged on the outer side of the screw 41 in a surrounding manner and fixedly arranged, the third gear 42 is meshed with the fourth gear 43, the number of teeth of the third gear 42 is larger than that of the fourth gear 43, the material to be melted is sent to the inner position of the heating box 38, then the electric heating plate 39 is started to heat the material, the material is heated to a melting state, the second motor 40 is started during heating, the second motor 40 drives the stirring rod 46 to stir, guarantee that the raw materials is heated evenly when melting, the melting of keeping away from heat source position raw materials with higher speed, when puddler 46 rotated simultaneously, make fourth gear 43 rotate to drive third gear 42 and rotate, thereby make screw rod 41 rotate around swivel nut 47, swivel nut 47 drives second piston plate 44 rebound along screw rod 41 rebound, make second piston plate 44 lower extreme form the negative pressure, thereby make the inside air of melting the raw materials spill over, prevent that the air from remaining the hole that produces when casting.

The air pressure balance mechanism 56 comprises a first vertical pipe 50, a second vertical pipe 54, a fixing ring 51, a ball 52 and a third spring 53, the second piston plate 44 is vertically and fixedly installed at the right side and provided with the second vertical pipe 54, the upper end inside the second vertical pipe 54 is movably sleeved with the first vertical pipe 50, the upper end of the first vertical pipe 50 is fixedly installed at the lower end of the cover plate 37 and communicated with the outside, the lower end of the first vertical pipe 50 is fixedly installed and provided with a hollow needle, the inner part of the second vertical pipe 54 is fixedly installed and provided with the fixing ring 51, the fixing ring 51 is provided with two parts, the bottom end of the fixing ring 51 is fixedly installed and provided with the third spring 53, the upper end of the third spring 53 is fixedly installed and provided with the ball 52, the ball 52 is tightly attached to the upper end of the fixing ring 51 at the lower end position, so as to seal the center position of the upper end fixing ring 51, when second piston plate 44 upward movement, the vertical pipe 54 rebound of second, until hollow needle extrusion ball 52 downshifts, third spring 53 is extruded this moment, solid fixed ring 51 makes second piston plate 44 lower extreme and external intercommunication, thereby guarantee atmospheric pressure, later open solenoid valve 49, discharge pipe 48 carries out the casting work with the raw materials discharge, need not the manual work and cast, the casting security has improved greatly, after the casting is accomplished, start first motor 2, first motor 2 drives first gear 5 and rotates, thereby make second gear 6 rotate, drive piston shaft 7 rotates, make casting mechanism 9 keep away from outer sandbox 3 upper end, thereby make things convenient for the work of taking out of product.

The working principle is as follows: when the model is used, the model is arranged in the hollow cylinder 34, then the third electric push rod 32 is started to drive the extrusion plate 33 to move towards the left side, so that hydraulic oil is pushed into the hollow cylinder 34, the hydraulic oil is injected into the extension groove 36, the clamping rods 35 are extruded to move until the model is clamped and fixed, then the cross rod 12 is driven to move downwards through the second electric push rod 11, so that the model is completely immersed into the water storage tank 13, the water surface rises, the volume of the model is calculated, the specific use volume of raw materials is conveniently determined, excessive use of the raw materials is prevented, more energy consumption during heating and melting is prevented, the purpose of saving energy is achieved, a plurality of clamping rods 35 are arranged, each clamping rod 35 cannot move after being clamped and fixed during clamping, the clamping rods 35 which are not clamped and fixed continue to move, and thus the models with different shapes are conveniently clamped, the application range of the system is improved;

when the sand casting device is used, a model is arranged at a position above a circular plate 16, then the model is extruded and fixed through an extruding mechanism 57, then a first electric push rod 20 is started, the first electric push rod 20 drives a first piston plate 18 to move upwards, so that sand grains in the outer sand box 3 move upwards, meanwhile, a vibrator 19 is started, the vibrator 19 drives the first piston plate 18 to vibrate, so that the sand grains vibrate, the sand grains are filled into an inner sand box 4 after passing through a gap position between supporting rods 17, the sand grains vibrate through vibration, so that the situation that the supporting rods 17 are fixed to prevent sand grains from being incapable of being filled when the sand grains move is avoided, the vibrating sand grains can effectively prevent empty drums, and the problem of casting quality caused by sand grain collapse during casting is avoided;

feeding a material to be melted into the heating box 38, starting the electric heating plate 39 to heat the material, heating the material to a melting state, starting the second motor 40 during heating, wherein the second motor 40 drives the stirring rod 46 to stir, so as to ensure that the material is uniformly heated during melting, accelerating the melting of the material at a position far away from a heat source, and simultaneously, when the stirring rod 46 rotates, rotating the fourth gear 43 and driving the third gear 42 to rotate, so that the screw 41 rotates around the threaded sleeve 47, the threaded sleeve 47 moves upwards along the screw 41, and the second piston plate 44 is driven to move upwards, so that the lower end of the second piston plate 44 forms negative pressure, so that the air in the melted material overflows, and holes generated by air residues during casting are prevented;

when second piston plate 44 upward movement, the vertical pipe 54 rebound of second, until hollow needle extrusion ball 52 downshifts, third spring 53 is extruded this moment, solid fixed ring 51 makes second piston plate 44 lower extreme and external intercommunication, thereby guarantee atmospheric pressure, later open solenoid valve 49, discharge pipe 48 carries out the casting work with the raw materials discharge, need not the manual work and cast, the casting security has improved greatly, after the casting is accomplished, start first motor 2, first motor 2 drives first gear 5 and rotates, thereby make second gear 6 rotate, drive piston shaft 7 rotates, make casting mechanism 9 keep away from outer sandbox 3 upper end, thereby make things convenient for the work of taking out of product.

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

1. A lost foam casting system, includes bottom plate (1) and outer sandbox (3), its characterized in that: the device is characterized in that a first motor (2) is fixedly arranged at the upper end of the bottom plate (1), a first gear (5) is fixedly arranged at the upper end of the first motor (2) and is output end, a movable shaft (7) is movably arranged at the upper end of the bottom plate (1) in an inserting manner, a second gear (6) is fixedly arranged at the outer end of the movable shaft (7) in a surrounding manner, a bearing plate (8) is fixedly arranged at the upper end of the movable shaft (7), a casting mechanism (9) is arranged at the upper end of the bearing plate (8), an extruding mechanism (57) is arranged at the upper end of the outer sandbox (3), a measuring mechanism (55) is arranged at the right side position of the upper end of the bottom plate (1), an inner sandbox (4) is fixedly arranged at the inner upper end of the outer sandbox (3), and a support rod (17) is fixedly arranged at the bottom end of the inner sandbox (4), bracing piece (17) one side fixed mounting is provided with plectane (16), outer sandbox (3) internal position movable mounting is provided with first piston plate (18), first piston plate (18) lower extreme position fixed mounting is provided with first electric putter (20), first electric putter (20) lower extreme position is provided with damper (58), first piston plate (18) lower extreme position fixed mounting is provided with vibrator (19).

2. A lost foam casting system as defined in claim 1, wherein: damper (58) are including settling tank (21), first fixed plate (22), second fixed plate (24), telescopic link (25) and first spring (23), settling tank (21) have been seted up to outside sandbox (3) inside bottom position, settling tank (21) bottom position fixed mounting is provided with second fixed plate (24), second fixed plate (24) upper end position fixed mounting is provided with telescopic link (25), telescopic link (25) upper end position fixed mounting is provided with first fixed plate (22), first fixed plate (22) upper end is fixed at first electric putter (20) lower extreme position, position fixed connection is provided with first spring (23) between first fixed plate (22) and second fixed plate (24), first spring (23) encircle to set up in the telescopic link (25) outside.

3. A lost foam casting system as defined in claim 2, wherein: extrusion mechanism (57) include L type pole (26), vertical pole (27), loop bar (28), second spring (30) and stripper plate (29), outer sandbox (3) upper end position damping movable mounting is provided with L type pole (26), the perpendicular fixed mounting in L type pole (26) lower extreme position is provided with vertical pole (27), vertical pole (27) lower extreme position activity is cup jointed and is provided with loop bar (28), loop bar (28) lower extreme position horizontal fixed mounting is provided with stripper plate (29), position fixed connection is provided with second spring (30) between loop bar (28) inside and vertical pole (27) bottom.

4. A lost foam casting system as recited in claim 3, wherein: measuring mechanism (55) includes fixture (10), storage water tank (13), transparent plate (14), scale mark (15), second electric putter (11) and horizontal pole (12), bottom plate (1) upper end position fixed mounting is provided with second electric putter (11), the horizontal fixed mounting of second electric putter (11) upper end position is provided with horizontal pole (12), horizontal pole (12) lower extreme position fixed mounting is provided with fixture (10), bottom plate (1) upper end position fixed mounting is provided with storage water tank (13), storage water tank (13) front end position fixed mounting is provided with transparent plate (14), the carving is provided with scale mark (15) on transparent plate (14).

5. A lost foam casting system as defined in claim 4, wherein: fixture (10) are including hollow block (31), third electric putter (32), stripper plate (33), hollow section of thick bamboo (34), extending groove (36) and supporting rod (35), horizontal pole (12) lower extreme position fixed mounting is provided with hollow block (31), hollow block (31) internal position fills and is provided with hydraulic oil, hollow block (31) right side position horizontal fixed mounting is provided with third electric putter (32), third electric putter (32) left side fixed mounting is provided with stripper plate (33), hollow block (31) lower extreme position fixed mounting is provided with hollow section of thick bamboo (34), extending groove (36) have been seted up to hollow section of thick bamboo (34) internal position, extending groove (36) inside activity joint is provided with supporting rod (35).

6. A lost foam casting system as recited in claim 5, wherein: the casting mechanism (9) comprises an air pressure balance mechanism (56), a second piston plate (44), a second motor (40), a stirring rod (46), a rubber ring (45), an electric heating plate (39), an electromagnetic valve (49), a discharge pipe (48), a heating box (38), a cover plate (37), a screw rod (41), a screw sleeve (47), a third gear (42) and a fourth gear (43), wherein the heating box (38) is fixedly arranged at the upper end of the bearing plate (8), the cross section of the heating box (38) is rectangular, the electric heating plate (39) is fixedly arranged at both side end positions in the heating box (38), the discharge pipe (48) is fixedly arranged at the lower end position of the heating box (38), the electromagnetic valve (49) is fixedly arranged at the upper end of the discharge pipe (48), the cover plate (37) is fixedly arranged at the upper end position of the heating box (38), the cover plate (37) is fixedly installed at the lower end center position of the cover plate (37) and is provided with a second motor (40), the output end position of the second motor (40) is fixedly installed and is provided with a stirring rod (46), the heating box (38) is movably clamped and connected with a second piston plate (44), the second piston plate (44) is fixedly installed at the inner center position of the second piston plate (44) and is provided with a rubber ring (45), the stirring rod (46) movably penetrates through the center position of the rubber ring (45), the inner diameter of the rubber ring (45) is smaller than the outer diameter of the stirring rod (46), the outer side of the stirring rod (46) is provided with a fourth gear (43) in a surrounding and fixed mode, the left side of the second piston plate (44) is fixedly installed and is provided with a threaded sleeve (47), the cover plate (37) is movably installed at the lower end position of the cover plate (37) and is provided with a screw rod (41), the lower end of the screw rod (41) penetrates through threads into the threaded sleeve (47), the outer side of the screw rod (41) is provided with a third gear (42) in a surrounding and in a fixed mode, the third gear (42) is meshed with the fourth gear (43), and the number of teeth of the third gear (42) is larger than that of teeth of the fourth gear (43).

7. A lost foam casting system as defined in claim 6, wherein: the air pressure balance mechanism (56) comprises a first vertical pipe (50), a second vertical pipe (54), a fixing ring (51), balls (52) and a third spring (53), the second piston plate (44) is vertically and fixedly installed on the right side and is provided with the second vertical pipe (54), the upper end inside the second vertical pipe (54) is movably sleeved with the first vertical pipe (50), the upper end of the first vertical pipe (50) is fixedly installed at the lower end of the cover plate (37) and is communicated with the outside, the lower end of the first vertical pipe (50) is fixedly installed with a hollow needle, the fixing ring (51) is fixedly installed inside the second vertical pipe (54), the two fixing rings (51) are arranged, the bottom ends of the fixing rings (51) are fixedly installed with the third spring (53), the balls (52) are fixedly installed at the upper end of the third spring (53), the ball (52) is tightly attached to the lower end of the upper end of the fixing ring (51).

8. A lost foam casting system as recited in claim 7, wherein: the first gear (5) is meshed with the second gear (6).

9. A lost foam casting system as recited in claim 8, wherein: a rubber pad is fixedly arranged on the outer side of the first piston plate (18) in a surrounding mode.