CN117161363A

CN117161363A - Stripping sand removal equipment for valve casting

Info

Publication number: CN117161363A
Application number: CN202311311871.0A
Authority: CN
Inventors: 黄重峰; 黄田煌; 黄景红
Original assignee: Guangdong Jinggong Valve Co ltd
Current assignee: Guangdong Jinggong Valve Co ltd
Priority date: 2023-10-11
Filing date: 2023-10-11
Publication date: 2023-12-05

Abstract

The invention belongs to the technical field of valve machining, and particularly relates to a lift mould sand removal device for valve casting; the device comprises a collecting box and a die frame, wherein a funnel is fixedly connected to the top of the collecting box, a filter plate is fixedly connected to the inside of an opening at the top of the funnel, the die frame is positioned on the surface of the filter plate, a mounting frame is fixedly connected to the top of the collecting box, a first air cylinder is fixedly connected to the top of the mounting frame, a square cover is fixedly connected to the bottom end of the first air cylinder, and the square cover is matched with the die frame; according to the invention, the motor is matched with the transmission assembly to drive the four demolding rods to rotate so as to loosen sand in the mold frame, so that automatic demolding is realized, the tedious process that a worker manually knocks the sand mold is effectively avoided, meanwhile, loose and fallen sand falls into the collecting box through the filter plate, the collection and recycling of the worker are facilitated, and the problem that the sand is inconvenient to scatter and recycle in the conventional sand casting demolding process is solved.

Description

Stripping sand removal equipment for valve casting

Technical Field

The invention belongs to the technical field of valve machining, and particularly relates to a mold sand cleaning device for valve casting.

Background

Sand casting is a conventional casting method that uses a sand material to manufacture a mold, and the molten metal is poured into the mold, allowed to cool and solidify, thereby obtaining a cast product of a desired shape. Sand casting is suitable for a wide variety of different types and sizes of castings, ranging from simple parts to complex assemblies.

Because sand casting can effectively improve the quality of the surface of the casting, and simultaneously reduce the occurrence probability of defects such as air holes, shrinkage cavities and the like; and sand casting can produce finer and more complex casting products, improves casting precision and accuracy, reduces casting turnover rate and rejection rate, and improves production efficiency, so sand casting is one of the common processing technologies when producing valves with larger volumes.

In the prior art, most factories are in the sand casting process of carrying out the valve, because the chemical auxiliary agent is used for agglomerating sand, the situation that the demolding is difficult often appears, and the demolding cost is higher by using the chemical auxiliary agent, the time is longer, the sand is required to be knocked by staff when the auxiliary tool is used for loosening and falling off the sand in the mold, and the demolding of the workpiece can be realized, however, the mode of manual demolding not only increases the workload of the staff, but also most of the manual demolding is carried out by hammering the mold through suspending the sling in the suspension, so that great potential safety hazards exist during demolding, and the sand is scattered everywhere during demolding, thereby being unfavorable for the recycling of the staff.

Therefore, the invention provides a lift mould sand cleaning device for valve casting.

Disclosure of Invention

In order to make up the deficiency of the prior art, solve in the prior art, most factories are in the sand casting process of carrying on the valve, because use the chemical auxiliary agent to condense the sand, often can appear the condition that the drawing of patterns is comparatively difficult, and use the chemical auxiliary agent to demold the cost higher, the time is longer, just need the staff to use the appurtenance to strike the sand in the mould at this time, make the sand in the mould loosen and drop, just can realize the drawing of patterns of work piece, however, this kind of manual mode of drawing of patterns has not only increased staff's work burden, and the mode is unsettled to carry on the hammering again with the mould through the hoist cable in manual mode of drawing of patterns, there is very big potential safety hazard in the time of this just causing the drawing of patterns, and the sand is scattered everywhere in the drawing of patterns, also unfavorable for the problem of staff's recycling.

The technical scheme adopted for solving the technical problems is as follows: the invention discloses a lift mould sand cleaning device for valve casting, which comprises a collecting box and a mould frame, wherein the top of the collecting box is fixedly connected with a funnel, a filter plate is fixedly connected in an opening at the top of the funnel, the mould frame is positioned on the surface of the filter plate, the top of the collecting box is fixedly connected with a mounting frame, the top of the mounting frame is fixedly provided with a first cylinder, the bottom of the first cylinder is fixedly connected with a square cover, the square cover is matched with the mould frame, the top of the inner wall of the square frame is fixedly connected with a fixing seat, a transmission assembly is arranged in the fixing seat, the center of the top of the square cover is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotating shaft, the rotating shaft is connected with four demoulding rods through the transmission assembly, the four demoulding rods are respectively positioned at four corners of the fixing seat and are matched with the mould frame, one side of the collecting box is fixedly provided with a conveying belt, the top of the conveying belt and the top of the funnel are positioned in the same horizontal plane, and the four sides of the inner wall of the square cover are respectively provided with a rubber layer.

Preferably, the transmission assembly comprises a first gear and a second gear, the bottom end of the rotating shaft extends into the fixing seat and is fixedly connected with the first gear, the four sides of the first gear are respectively connected with the second gear in a meshed mode, the second gear is sleeved with the top end of the demolding rod, the demolding rod is rotationally connected with the fixing seat, the bottom end of the demolding rod is conical, the top of an inner cavity of the demolding rod is provided with a lifting assembly, the demolding rod is connected with the T-shaped rod through the lifting assembly, the bottom end of the T-shaped rod extends to the lower side of the demolding rod, and the bottom end of the T-shaped rod is inlaid with a vibration ball.

Preferably, the lifting assembly comprises a fixed shaft, a lifting ring, a first sliding block and a limiting block, wherein a reciprocating thread groove is formed in the top of an inner cavity of the demolding rod, the lifting ring is fixedly connected to the top of the T-shaped rod, the limiting block is movably connected to the top of the lifting ring, the limiting block is slidably connected with the reciprocating thread groove, the first sliding block is symmetrically fixedly connected to the inner wall of the lifting ring, a fixed shaft is arranged in the lifting ring, the top of the fixed shaft is fixedly connected with the top of the inner cavity of the fixed seat, and the first sliding block is slidably connected with the fixed shaft.

Preferably, the T-shaped rod is uniformly sleeved with a plurality of groups of circular rings, the demoulding rod is uniformly embedded with a plurality of groups of fixing sleeves II, a limiting ring is connected in an inner cavity of the fixing sleeve II in a sliding manner and sleeved on the supporting rod, one end of the supporting rod extends to the inner cavity of the demoulding rod to be fixedly connected with the extrusion block, the other end of the supporting rod extends to the outer side of the demoulding rod to be fixedly connected with the sand loosening plate, the extrusion block is semi-elliptic and is matched with the circular rings, a plurality of circular rods are fixedly connected with the outer side of the sand loosening plate, and a limiting ring is sleeved on the supporting rod and fixedly connected with a spring II between the limiting ring and the inner wall of the fixing sleeve II.

Preferably, the bottom terminal surface of gear one has the annular piece of multiunit diameter increase in proper order from inside to outside rigid coupling, the bottom of annular piece is evenly set up flutedly, the bottom of fixing base evenly rigid coupling has multiunit fixed sleeve one, be equipped with the elasticity vibrations piece in the fixed sleeve one, elasticity vibrations piece and annular piece looks adaptation.

Preferably, the elastic vibration piece comprises a first spring and a vibration rod, the first fixed sleeve is connected with the vibration rod in a sliding mode, the vibration rod is composed of a ball head rod and a T-shaped cone head rod, the bottom end of the ball head rod extends to the lower portion of the first fixed sleeve, the top end of the T-shaped cone head rod extends to the inner cavity of the fixed seat to be matched with the groove, and two ends of the first spring are fixedly connected with the bottom of the inner cavity of the first fixed sleeve and the bottom end of the T-shaped cone head rod respectively.

Preferably, be equipped with the annular chamber in the pole wall top of drawing of patterns pole, annular intracavity rotation is connected with annular rotation piece, it has the inlet tube to inlay in the fixed axle, the external water supply equipment of one end of inlet tube, the other end of inlet tube runs through annular rotation piece and extends to annular intracavity, and inlet tube and annular rotation piece rigid coupling, even rigid coupling has the water spray board on the outer wall of drawing of patterns pole, the inner chamber and the annular chamber intercommunication of water spray board, the rigid coupling has the multiunit shower nozzle on the outer wall of water spray board, install the check valve on the shower nozzle.

Preferably, the baffle is fixedly connected to the bottom of the inner cavity of the collecting box, the filter screen is fixedly connected between the baffle and the side wall of the inner cavity of the collecting box, the sand cleaning shovel is arranged on the filter screen, the air cylinder II is fixedly connected to the outer wall of the collecting box, one end of the air cylinder II extends into the inner cavity of the collecting box to be fixedly connected with the mounting block, the mounting block is in sliding connection with the sand cleaning shovel, the baffle is fixedly connected to the top of the inner cavity of the collecting box, and the sand cleaning shovel is matched with the baffle and the baffle.

Preferably, the first guide way and the second guide way are all offered to the inner wall both sides of collecting box, sliding connection has the slider two in the inner chamber of installation piece, the rigid coupling has the spring three between the inner chamber top of slider two and installation piece, the one end of slider two extends to the outside and the sand cleaning shovel rigid coupling of installation piece, the both sides of sand cleaning shovel all are equipped with the spacing groove, sliding connection has the guide way in the spacing groove, rigid coupling has the spring four between guide way and the spacing groove inner wall, equal sliding connection of guide way and guide way two.

Preferably, the first guide groove is composed of a first transverse groove, a chute, a second transverse groove and a vertical groove, the second guide groove and the first transverse groove are on the same horizontal line, the second guide groove is located on one side of the vertical groove, the bottom of one side of the vertical groove, which is close to the second guide groove, is an inclined surface, and one side of the second guide groove, which is close to the chute, is an inclined surface.

The beneficial effects of the invention are as follows:

1. according to the mold sand cleaning equipment for valve casting, the square cover is driven to slide downwards by the air cylinder to cover the mold frame completely, so that the mold frame can be prevented from shifting in the follow-up demolding process, sand can be prevented from scattering outside the hopper during demolding, sand is not easy to collect, in the continuous falling process of the square cover, the motor is matched with the transmission assembly to drive the four demolding rods to rotate so as to loosen the sand in the mold frame, automatic demolding is realized, the tedious process that a worker manually knocks a sand mold is effectively avoided, meanwhile, loose and fallen sand falls into the collecting box through the filter plate, the collection and recycling of the worker are facilitated, and the problem that the sand is inconvenient to collect in a four-scattering mode during the conventional sand mold casting demolding is solved.

2. According to the mold sand cleaning equipment for valve casting, the lifting assembly can drive the T-shaped rod to slide out of the mold stripping rod back and forth in the process of descending and rotating the mold stripping rod, so that the effect of vibrating sand is achieved, the mold stripping speed is further improved, and when the gear I rotates, the annular piece can be matched with the elastic vibrating piece in the fixed sleeve I to vibrate and flap the sand at the top of the mold frame, so that the process of releasing loose sand is accelerated.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a first cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a second cross-sectional view of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at B;

FIG. 6 is a schematic view of a holder and stripper bar of the present invention;

FIG. 7 is a schematic view of a transmission assembly of the present invention;

FIG. 8 is a schematic view of a bottom portion of a gear in accordance with the present invention;

FIG. 9 is a first cross-sectional view of a stripper bar of the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 9 at C;

FIG. 11 is a partial enlarged view at D in FIG. 9;

FIG. 12 is a second cross-sectional view of the ejector beam of the present invention;

FIG. 13 is an enlarged view of a portion of FIG. 12 at E;

FIG. 14 is a schematic view in semi-section of a stripper bar of the present invention;

FIG. 15 is a partial exploded view of the present invention at the ejector pins;

FIG. 16 is a cross-sectional view of the sand cleaning blade of the present invention;

FIG. 17 is an enlarged view of a portion of FIG. 16 at F;

FIG. 18 is a partial cross-sectional view of the collection tank of the present invention;

in the figure: 1. a collection box; 2. a funnel; 3. a mold frame; 4. a conveyor belt; 5. a mounting frame; 6. a first cylinder; 7. a square cover; 8. a rubber layer; 9. a motor; 10. a rotating shaft; 11. a fixing seat; 12. a first gear; 13. a second gear; 14. a stripper rod; 15. a ring member; 16. a first fixed sleeve; 17. a first spring; 18. a vibrating rod; 19. a fixed shaft; 20. a lifting ring; 21. a first sliding block; 22. reciprocating thread grooves; 23. a limiting block; 24. a T-shaped rod; 25. a vibrating ball; 26. a circular ring; 27. a second fixing sleeve; 28. a limiting ring; 29. a support rod; 30. extruding a block; 31. a sand loosening plate; 32. a second spring; 33. a water spraying plate; 34. a water inlet pipe; 35. an annular rotating member; 36. an annular cavity; 37. a spray head; 38. a one-way valve; 39. a partition plate; 40. a filter screen; 41. a baffle; 42. a second cylinder; 43. a mounting block; 44. a third spring; 45. a second slide block; 46. a sand cleaning shovel; 47. a spring IV; 48. a guide block; 49. a first guide groove; 50. and a second guide groove.

Detailed Description

The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.

As shown in fig. 1-18, the lift-die sand cleaning device for valve casting according to the embodiment of the invention comprises a collecting box 1 and a die frame 3, wherein a funnel 2 is fixedly connected to the top of the collecting box 1, a filter plate is fixedly connected to the top opening of the funnel 2, the die frame 3 is positioned on the surface of the filter plate, a mounting frame 5 is fixedly connected to the top of the collecting box 1, a first air cylinder 6 is fixedly arranged at the top of the mounting frame 5, a square cover 7 is fixedly connected to the bottom end of the first air cylinder 6, the square cover 7 is matched with the die frame 3, a fixing seat 11 is fixedly connected to the top of the inner wall of the square frame, a transmission assembly is arranged in the fixing seat 11, a motor 9 is fixedly connected to the top center of the square cover 7, a rotating shaft 10 is fixedly connected to the output end of the motor 9, the rotating shaft 10 is connected with four demolding rods 14 through the transmission assembly, the four demolding rods 14 are respectively positioned at four corners of the fixing seat 11 and are matched with the die frame 3, a conveying belt 4 is fixedly arranged at one side of the collecting box 1, the top of the conveying belt 4 is fixedly connected to the bottom of the first air cylinder 7, a fixing seat 11 is fixedly arranged at the bottom of the fixing seat, a fixing seat 11 is fixedly connected to the bottom of the square cover 7, a driving assembly is fixedly arranged on the same side as the inner wall of the funnel 7, and is provided with a rubber layer 8. During operation, the staff transports the mould frame 3 after the sand cast shaping to the filter at funnel 2 top through conveyer belt 4, start cylinder one 6, drive square cover 7 and slide down and cover mould frame 3 completely through cylinder one 6, can enough avoid taking place the skew at follow-up drawing of patterns in-process mould frame 3, can prevent again that the sand from scattering outside funnel 2 during the drawing of patterns, be unfavorable for the collection of sand, in the in-process that square cover 7 continuously descends, can drive four drawing of patterns pole 14 rotations through motor 9 cooperation drive assembly and become flexible the sand in the mould frame 3, realize automatic drawing of patterns, the effectual loaded down with trivial details process of staff's manual striking sand mould, simultaneously, the sand that becomes flexible drops into collecting box 1 through the filter, the staff of being convenient for collects cyclic utilization, the problem of the inconvenient centralized recovery of sand four in time of traditional sand casting drawing of patterns is solved, the rubber layer 8 that is equipped with on the inner wall of square cover 7 can be better carries out spacing fixedly to mould frame 3.

The transmission assembly comprises a first gear 12 and a second gear 13, the bottom end of the rotating shaft 10 extends into the fixed seat 11 to be fixedly connected with the first gear 12, the four sides of the first gear 12 are respectively connected with the second gear 13 in a meshed mode, the second gear 13 is sleeved with the top end of the demoulding rod 14, the demoulding rod 14 is rotationally connected with the fixed seat 11, the bottom end of the demoulding rod 14 is conical, the top of an inner cavity of the demoulding rod 14 is provided with a lifting assembly, the demoulding rod 14 is connected with the T-shaped rod 24 through the lifting assembly, the bottom end of the T-shaped rod 24 extends to the lower side of the demoulding rod 14, and a vibration ball 25 is embedded at the bottom end of the T-shaped rod 24; during operation, when the motor 9 is started, the motor 9 drives the rotating shaft 10 to rotate, so that the first gear 12 drives the four second gears 13 to rotate, and then drives the four demoulding rods 14 to rotate, sand in the mould frame 3 is rotationally drilled and loosened, the lifting component can drive the T-shaped rod 24 to slide out of the demoulding rod 14 back and forth in the descending and rotating process of the demoulding rod 14, the effect of vibrating the sand is achieved, and the demoulding speed is further improved.

The lifting assembly comprises a fixed shaft 19, a lifting ring 20, a first sliding block 21 and a limiting block 23, wherein a reciprocating thread groove 22 is formed in the top of an inner cavity of the demolding rod 14, the lifting ring 20 is fixedly connected to the top of the T-shaped rod 24, the limiting block 23 is movably connected to the top of the lifting ring 20, the limiting block 23 is slidably connected with the reciprocating thread groove 22, the first sliding block 21 is symmetrically fixedly connected to the inner wall of the lifting ring 20, a fixed shaft 19 is arranged in the lifting ring 20, the top of the fixed shaft 19 is fixedly connected with the top of the inner cavity of the fixing seat 11, and the first sliding block 21 is slidably connected with the fixed shaft 19; when the demolding rod 14 starts to rotate in operation, the first sliding block 21 on the lifting ring 20 is in sliding fit with the fixed shaft 19, so that the lifting ring 20 is driven to slide up and down by the sliding fit between the reciprocating thread groove 22 and the limiting block 23 by the demolding rod 14, further up-and-down reciprocating vibration of the T-shaped rod 24 is realized, the T-shaped rod 24 is convenient to match with the vibration ball 25 to loosen sand in the rotation descending process of the demolding rod 14, when the square cover 7 descends to be attached to the surface of the filter plate, the demolding rod 14 is not contacted with the filter plate, and meanwhile, the T-shaped rod 24 and the vibration ball 25 continuously vibrate the surface of the filter plate, so that the filter plate can be prevented from being blocked by the sand, and the demolding speed is influenced.

The T-shaped rod 24 is uniformly sleeved with a plurality of groups of circular rings 26, the demoulding rod 14 is uniformly embedded with a plurality of groups of second fixing sleeves 27, limiting rings 28 are connected in the inner cavities of the second fixing sleeves 27 in a sliding manner, the limiting rings 28 are sleeved on supporting rods 29, one ends of the supporting rods 29 extend into the inner cavities of the demoulding rod 14 and are fixedly connected with extrusion blocks 30, the other ends of the supporting rods 29 extend to the outer sides of the demoulding rod 14 and are fixedly connected with a sand loosening plate 31, the extrusion blocks 30 are semi-elliptic and are matched with the circular rings 26, the outer sides of the sand loosening plate 31 are fixedly connected with a plurality of circular rods, the limiting rings 28 are sleeved on the supporting rods 29, and springs II 32 are fixedly connected between the limiting rings 28 and the inner walls of the second fixing sleeves 27; when the T-shaped rod 24 slides up and down in a reciprocating manner, the circular ring 26 on the T-shaped rod 24 pushes the extrusion block 30 up and down regularly, so that the extrusion block 30 drives the supporting rod 29 and the sand loosening plate 31 to slide outwards, after the circular ring 26 is separated from the extrusion block 30, the sand loosening plate 31 resets under the action of the elastic force of the second spring 32, and through the structure, sand around the demolding rod 14 can be rotationally swung in a reciprocating manner by the aid of the sand loosening plate 31 and the circular rod in the rotary descending process of the demolding rod 14, and the sand loosening demolding speed is improved.

A plurality of groups of annular pieces 15 with diameters sequentially increased are fixedly connected to the end face of the bottom of the first gear 12 from inside to outside, grooves are uniformly formed in the bottom of the annular pieces 15, a plurality of groups of fixing sleeves 16 are uniformly fixedly connected to the bottom of the fixing seat 11, elastic vibration pieces are arranged in the fixing sleeves 16, and the elastic vibration pieces are matched with the annular pieces 15; when the first gear 12 rotates, the annular piece 15 can be matched with the elastic vibration piece in the first fixed sleeve 16 to vibrate and slap sand at the top of the die frame 3, and the process of sand loosening and demolding is accelerated.

The elastic vibration piece comprises a first spring 17 and a vibration rod 18, the vibration rod 18 is connected with the first fixed sleeve 16 in a sliding manner, the vibration rod 18 consists of a ball head rod and a T-shaped cone head rod, the bottom end of the ball head rod extends to the lower part of the first fixed sleeve 16, the top end of the T-shaped cone head rod extends to the inner cavity of the fixed seat 11 to be matched with the groove, and two ends of the first spring 17 are fixedly connected with the bottom of the inner cavity of the first fixed sleeve 16 and the bottom end of the T-shaped cone head rod respectively; during operation, through rotatory ring 15 for T type cone pole constantly contacts with the recess on the ring 15, and when T type cone pole was slided in the recess, spring one 17 reset, ball head pole withdrawal fixed sleeve one 16 square, and when T type cone pole was slided out the recess, spring one 17 was extrudeed, and ball head pole kept away from fixed sleeve one 16 downwards and strikes the sand in the mould frame 3, so reciprocating, cooperates the process that the drawing of patterns pole 14 accelerated sand was not hard up from the top of mould frame 3, and when square cover 7 and filter subsided, the ball head pole bottom can not contact with the product.

An annular cavity 36 is arranged in the top of the rod wall of the demoulding rod 14, an annular rotating member 35 is rotationally connected in the annular cavity 36, a water inlet pipe 34 is embedded in the fixed shaft 19, one end of the water inlet pipe 34 is externally connected with water supply equipment, the other end of the water inlet pipe 34 penetrates through the annular rotating member 35 and extends into the annular cavity 36, the water inlet pipe 34 is fixedly connected with the annular rotating member 35, a water spraying plate 33 is uniformly fixedly connected on the outer wall of the demoulding rod 14, an inner cavity of the water spraying plate 33 is communicated with the annular cavity 36, a plurality of groups of spray nozzles 37 are fixedly connected on the outer wall of the water spraying plate 33, and a one-way valve 38 is arranged on the spray nozzles 37; when the demolding device is in operation, after demolding is completed, water can be supplied to the water spraying plate 33 through the water supply equipment connected with the water inlet pipe 34, and then sprayed out through the spray nozzle 37 on the water spraying plate 33, so that sand attached to the surface of a product can be cleaned, sand attached to the inner wall of the mold frame 3 can be cleaned, the pre-cleaning effect after demolding is realized, and convenience is brought to further cleaning of subsequent products.

The bottom of the inner cavity of the collecting box 1 is fixedly connected with a baffle plate 39, a filter screen 40 is fixedly connected between the baffle plate 39 and the side wall of the inner cavity of the collecting box 1, a sand cleaning shovel 46 is arranged on the filter screen 40, a second air cylinder 42 is fixedly connected on the outer wall of the collecting box 1, one end of the second air cylinder 42 extends into the inner cavity of the collecting box 1 to be fixedly connected with a mounting block 43, the mounting block 43 is in sliding connection with the sand cleaning shovel 46, a baffle plate 41 is fixedly connected at the top of the inner cavity of the collecting box 1, and the sand cleaning shovel 46 is matched with the baffle plate 41 and the baffle plate 39; when the equipment is in the demolding process, the second air cylinder 42 can drive the sand removing shovel 46 to slide back and forth on the surface of the filter screen 40, sand accumulated on the surface of the filter screen 40 is cleaned into the inner cavity of the collecting box 1 on the other side of the partition plate 39, so that subsequent workers can conveniently and intensively recycle the sand.

The two sides of the inner wall of the collecting box 1 are provided with a first guide groove 49 and a second guide groove 50, a second slide block 45 is slidably connected in the inner cavity of the mounting block 43, a third spring 44 is fixedly connected between the second slide block 45 and the top of the inner cavity of the mounting block 43, one end of the second slide block 45 extends to the outer side of the mounting block 43 and is fixedly connected with a sand cleaning shovel 46, two sides of the sand cleaning shovel 46 are provided with limiting grooves, a guide block 48 is slidably connected in the limiting grooves, a fourth spring 47 is fixedly connected between the guide block 48 and the inner wall of the limiting groove, and the guide block 48 is slidably connected with the first guide groove 49 and the second guide groove 50; when the sand cleaning shovel 46 is used for cleaning sand accumulated on the surface of the filter screen 40, the air cylinder II 42 drives the sand cleaning shovel 46 to slide towards the baffle 41, in the process, the guide block 48 slides out of the guide groove II 50 and slides against the inner wall of the collecting box 1, at the moment, the spring IV 47 is extruded by the guide block 48, the spring III 44 in the mounting block 43 is in an initial state, when the sand cleaning shovel 46 slides into the guide groove I49 in the process of approaching the baffle 41, the spring IV 47 drives the guide block 48 to pop out through the elastic force, when the sand cleaning shovel 46 is driven by the air cylinder II 42 to be far away from the baffle 41, the guide block 48 slides along the guide groove I49, in the process, because of the oblique ascending design of the guide groove I49, the sand cleaning shovel 46 slides upwards to be separated from the surface of the filter screen 40 under the cooperation of the guide block 48, and the slider II 45 presses the spring III 44 until the sand cleaning shovel 46 returns to the initial position, the guide block 48 slides out of the guide groove I, under the elastic force of the spring III 44, the sand cleaning shovel 46 contacts with the surface of the guide groove I again, and simultaneously the sand cleaning shovel 48 returns to the filter screen 40 to the other side of the filter screen 40 after the filter screen 40 is completely separated from the filter screen 40, and the filter screen 40 is completely separated from the filter screen 40 after the filter screen 40 is completely and the filter screen is completely cleaned, and the sand cleaning shovel 40 is completely separated from the surface after the filter screen 40 is completely from the surface after the filter screen is completely and the filter screen is completely separated from the surface.

The first guide groove 49 consists of a first transverse groove, a chute, a second transverse groove and a vertical groove, the second guide groove 50 and the first transverse groove are arranged on the same horizontal line, the second guide groove 50 is positioned on one side of the vertical groove, the bottom of one side of the vertical groove, which is close to the second guide groove 50, is an inclined surface, and one side of the second guide groove 50, which is close to the chute, is an inclined surface; during operation, through the design of the first guide groove 49 and the second guide groove 50, the sand cleaning shovel 46 can always keep the adhesion with the surface of the filter screen 40 in the process of cleaning sand, and can be separated from the surface of the filter screen 40 during return stroke, so that incomplete cleaning is avoided.

The working principle is that a worker conveys the die frame 3 after sand casting forming to the filter plate at the top of the hopper 2 through the conveyor belt 4, the first cylinder 6 is started, the first cylinder 6 drives the square cover 7 to slide downwards to cover the die frame 3 completely, so that the die frame 3 can be prevented from shifting in the follow-up demolding process, sand can be prevented from scattering outside the hopper 2 during demolding, sand is not beneficial to collecting, the four demolding rods 14 can be driven to rotate to loosen the sand in the die frame 3 through the motor 9 in the continuous descending process of the square cover 7, automatic demolding is realized, the tedious process that the worker manually knocks the sand mold is effectively avoided, meanwhile, loose and fallen sand falls into the collecting box 1 through the filter plate, the convenience is brought to the worker for collecting and recycling, the problem that the sand is not convenient to collect and recycle in the four directions during the traditional sand casting demolding is solved, the rubber layer 8 arranged on the inner wall of the square cover 7 can better limit and fix the mold frame 3, when the motor 9 is started, the motor 9 drives the rotating shaft 10 to rotate, so that the gear I12 drives the four gears II 13 to rotate and further drives the four demolding rods 14 to rotate, thereby realizing rotary drilling loosening of sand in the mold frame 3, the T-shaped rod 24 can be driven by the lifting component to slide out and retract the demolding rod 14 back and forth in the process of descending rotation of the demolding rod 14, realizing the effect of vibrating the sand, further improving the demolding speed, when the demolding rod 14 starts rotating, the lifting rod 14 can drive the lifting ring 20 to slide up and down through the sliding fit between the reciprocating thread groove 22 and the limiting block 23 because of the sliding fit between the first sliding block 21 and the fixed shaft 19 on the lifting ring 20, thereby realizing the up and down reciprocating vibration of the T-shaped rod 24, the T-shaped rod 24 is convenient to realize loosening of sand in the process of the rotation and descending of the demoulding rod 14 by matching with the vibration ball 25, when the square cover 7 descends to be attached to the surface of the filter plate, the demoulding rod 14 can not be contacted with the filter plate, simultaneously, the T-shaped rod 24 and the vibration ball 25 continuously vibrate the surface of the filter plate, the filter plate can be prevented from being blocked by sand to influence the demoulding speed, when the T-shaped rod 24 slides up and down, the circular ring 26 on the T-shaped rod 24 can move the extrusion block 30 up and down regularly, the extrusion block 30 drives the supporting rod 29 and the loose sand plate 31 to slide outwards, after the circular ring 26 is separated from the extrusion block 30, the loose sand plate 31 is reset under the elastic action of the two springs 32, the rotating and swinging of the loose sand plate 31 and the circular rod around the demoulding rod 14 is realized through the structure, the speed of the loose sand is improved, when the gear is rotated, the circular ring 15 is used for continuously contacting with the circular ring 15, the T-shaped conical head 15 is contacted with the groove on the circular ring 15, the water spray head 17 is contacted with the inner wall of the mould head 16, the water spray head 17 is contacted with the inner wall of the mould 17, the water spray head is contacted with the inner wall of the water spray pipe 33, the water spray pipe is contacted with the inner side of the water spray pipe 3, the water spray pipe is contacted with the water spray pipe 3 is contacted with the inner side of the water spray pipe 3, and the water spray pipe is contacted with the water spray pipe 33, and the water spray pipe is sprayed with the water spray pipe is sprayed with the water. The pre-cleaning effect after demolding is realized, the convenience is provided for further cleaning of subsequent products, when the equipment is in demolding process, the second air cylinder 42 can drive the sand cleaning shovel 46 to slide back and forth on the surface of the filter screen 40, sand accumulated on the surface of the filter screen 40 is cleaned into the inner cavity of the collecting box 1 on the other side of the baffle plate 39, the subsequent workers can conveniently and intensively recycle the sand, when the equipment is in sand cleaning process, the second air cylinder 42 drives the sand cleaning shovel 46 to slide to the top of the baffle plate 39 and be attached to the baffle plate 41, the blocking is completed, the waste water used in sand cleaning process can be recovered through the filter screen 40, the residual sand in the waste water is filtered on the surface of the filter screen 40, the subsequent cleaning is convenient, when the sand cleaning shovel 46 cleans the sand accumulated on the surface of the filter screen 40, the second air cylinder 42 drives the sand cleaning shovel 46 to slide towards the baffle plate 41, in the process, the guide block 48 slides out from the guide groove 50 to be attached to the inner wall of the collecting box 1, at this time, the spring four 47 is pressed by the guide block 48, the spring three 44 in the mounting block 43 is in an initial state, when the guide block 48 slides into the guide groove one 49 in the process of approaching the baffle 41, the spring four 47 drives the guide block 48 to pop up under the action of elasticity, when the sand cleaning shovel 46 is driven by the air cylinder two 42 to move away from the baffle 41, the guide block 48 slides along the guide groove one 49, in the process, because of the oblique rising design of the guide groove one 49, the sand cleaning shovel 46 slides upwards to be separated from the surface of the filter screen 40 under the cooperation of the guide block 48, and the slide block two 45 presses the spring three 44 until the sand cleaning shovel 46 returns to the initial position, the guide block 48 slides out of the guide groove one 49, the sand cleaning shovel 46 contacts with the surface of the filter screen 40 again under the action of elasticity of the spring three 44, and simultaneously, the guide block 48 returns into the guide groove two 50 again, so reciprocating, it is realized that after the inner chamber of collection box 1 opposite side is cleared up the accumulational sand in filter screen 40 surface, sand cleaning shovel 46 can break away from the filter screen 40 surface at the in-process of return stroke, avoids the action of return slip to push the sand that falls into newly on the filter screen 40 to cylinder two 42 one side, causes the incomplete condition of clearance.

The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.

In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a valve casting is with lift mould sand removal equipment which characterized in that: including collecting box (1) and mould frame (3), the top rigid coupling of collecting box (1) has funnel (2), the rigid coupling has filter in the open top of funnel (2), mould frame (3) are located the surface of filter, the top rigid coupling of collecting box (1) has mounting bracket (5), the top of mounting bracket (5) is fixed with cylinder one (6), the bottom rigid coupling of cylinder one (6) has square cover (7), square cover (7) and mould frame (3) looks adaptation, the inner wall top rigid coupling of square frame has fixing base (11), be equipped with drive assembly in fixing base (11), the top center rigid coupling of square cover (7) has motor (9), the output rigid coupling of motor (9) has pivot (10), pivot (10) are connected through drive assembly and four release lever (14) are located four corners of fixing base (11) respectively, and with mould frame (3) looks adaptation, one side of collecting box (1) is equipped with fixing base (4) and is equipped with in the inner wall (8) of square cover (4), the inner wall (8) of the same level of conveying area (4) are equipped with.

2. The lift mold sand removal device for valve casting according to claim 1, wherein: the transmission assembly comprises a first gear (12) and a second gear (13), the bottom end of the rotating shaft (10) extends into the fixed seat (11) to be fixedly connected with the first gear (12), four sides of the first gear (12) are respectively connected with the second gear (13) in a meshed mode, the second gear (13) is sleeved with the top end of the demolding rod (14), the demolding rod (14) is rotationally connected with the fixed seat (11), the bottom end of the demolding rod (14) is conical, the top of an inner cavity of the demolding rod (14) is provided with a lifting assembly, the demolding rod (14) is connected with the T-shaped rod (24) through the lifting assembly, the bottom end of the T-shaped rod (24) extends to the lower portion of the demolding rod (14), and the bottom end of the T-shaped rod (24) is inlaid with a vibrating ball (25).

3. The lift mold sand removal device for valve casting according to claim 2, wherein: the lifting assembly comprises a fixed shaft (19), a lifting ring (20), a first sliding block (21) and a limiting block (23), wherein a reciprocating thread groove (22) is formed in the top of an inner cavity of the demolding rod (14), the lifting ring (20) is fixedly connected to the top of the T-shaped rod (24), the limiting block (23) is movably connected to the top of the lifting ring (20), the limiting block (23) is slidably connected with the reciprocating thread groove (22), the first sliding block (21) is symmetrically fixedly connected to the inner wall of the lifting ring (20), the fixed shaft (19) is arranged in the lifting ring (20), the top of the fixed shaft (19) is fixedly connected with the top of the inner cavity of the fixing seat (11), and the first sliding block (21) is slidably connected with the fixed shaft (19).

4. A lift mould sand removal apparatus for valve casting according to claim 3, wherein: the T-shaped rod (24) is uniformly sleeved with a plurality of groups of circular rings (26), the demoulding rod (14) is uniformly embedded with a plurality of groups of fixed sleeve two (27), a limiting ring (28) is connected in the inner cavity of the fixed sleeve two (27) in a sliding manner, the limiting ring (28) is sleeved on a supporting rod (29), one end of the supporting rod (29) extends into the inner cavity of the demoulding rod (14) to be fixedly connected with an extrusion block (30), the other end of the supporting rod (29) extends to the outer side of the demoulding rod (14) to be fixedly connected with a sand loosening plate (31), the extrusion block (30) is semi-elliptic and is matched with the circular rings (26), a plurality of circular rods are fixedly connected to the outer side of the sand loosening plate (31), the limiting ring (28) is sleeved on the supporting rod (29), and a spring two (32) is fixedly connected between the limiting ring (28) and the inner wall of the fixed sleeve two (27).

5. The lift mold sand removal device for valve casting according to claim 4, wherein: the bottom terminal surface of gear one (12) has multiunit diameter to increase in proper order ring piece (15) from inside to outside rigid coupling, the bottom of ring piece (15) is evenly set up flutedly, the bottom of fixing base (11) is evenly rigid coupling has multiunit fixed sleeve one (16), be equipped with the elasticity vibrations piece in fixed sleeve one (16), elasticity vibrations piece and ring piece (15) looks adaptation.

6. The lift mold sand removal device for valve casting according to claim 5, wherein: the elastic vibration piece comprises a first spring (17) and a vibration rod (18), the vibration rod (18) is connected in the first fixed sleeve (16) in a sliding mode, the vibration rod (18) is composed of a ball head rod and a T-shaped conical head rod, the bottom end of the ball head rod extends to the lower portion of the first fixed sleeve (16), the top end of the T-shaped conical head rod extends to the inner cavity of the fixed seat (11) to be matched with the groove, and two ends of the first spring (17) are fixedly connected with the bottom of the inner cavity of the first fixed sleeve (16) and the bottom end of the T-shaped conical head rod respectively.

7. The lift mold sand removal device for valve casting according to claim 6, wherein: be equipped with annular chamber (36) in the wall top of drawing of patterns pole (14), annular chamber (36) internal rotation is connected with annular rotation piece (35), inlay in fixed axle (19) has inlet tube (34), the external water supply equipment of one end of inlet tube (34), the other end of inlet tube (34) runs through annular rotation piece (35) and extends to in annular chamber (36), and inlet tube (34) and annular rotation piece (35) rigid coupling, even rigid coupling has water spray plate (33) on the outer wall of drawing of patterns pole (14), the inner chamber and the annular chamber (36) intercommunication of water spray plate (33), the rigid coupling has multiunit shower nozzle (37) on the outer wall of water spray plate (33), install check valve (38) on shower nozzle (37).

8. The lift mold sand removal device for valve casting according to claim 7, wherein: the utility model discloses a sand cleaning device, including collecting box (1), baffle (39) have to the inner chamber bottom rigid coupling of collecting box (1), rigid coupling has filter screen (40) between the inner chamber lateral wall of baffle (39) and collecting box (1), be equipped with sand cleaning shovel (46) on filter screen (40), the rigid coupling has cylinder two (42) on the outer wall of collecting box (1), the one end of cylinder two (42) extends to in the inner chamber of collecting box (1) with installation piece (43) rigid coupling, installation piece (43) and sand cleaning shovel (46) sliding connection, the inner chamber top rigid coupling of collecting box (1) has baffle (41), sand cleaning shovel (46) and baffle (41) and baffle (39) all adapt.

9. The lift mold sand removal device for valve casting according to claim 8, wherein: guide grooves I (49) and second guide grooves (50) are formed in two sides of the inner wall of the collecting box (1), a second sliding block (45) is connected in the inner cavity of the mounting block (43) in a sliding mode, a third spring (44) is fixedly connected between the second sliding block (45) and the top of the inner cavity of the mounting block (43), one end of the second sliding block (45) extends to the outer side of the mounting block (43) to be fixedly connected with a sand cleaning shovel (46), limiting grooves are formed in two sides of the sand cleaning shovel (46), guide blocks (48) are connected in the limiting grooves in a sliding mode, a fourth spring (47) is fixedly connected between the guide blocks (48) and the inner walls of the limiting grooves, and the guide blocks (48) are connected with the first guide grooves (49) and the second guide grooves (50) in a sliding mode.

10. The lift mold sand removal device for valve casting according to claim 9, wherein: the first guide groove (49) consists of a first transverse groove, a chute, a second transverse groove and a vertical groove, the second guide groove (50) and the first transverse groove are arranged on the same horizontal line, the second guide groove (50) is positioned on one side of the vertical groove, the bottom of one side of the vertical groove, which is close to the second guide groove (50), is an inclined surface, and one side of the second guide groove (50), which is close to the chute, is an inclined surface.