CN114147171A

CN114147171A - Molding sand reducing mechanism is used in brake disc casting

Info

Publication number: CN114147171A
Application number: CN202210115301.3A
Authority: CN
Inventors: 崔迅
Original assignee: Longkou City Heyi Machinery Components Co ltd
Current assignee: Longkou City Heyi Machinery Components Co ltd
Priority date: 2022-02-07
Filing date: 2022-02-07
Publication date: 2022-03-08
Anticipated expiration: 2042-02-07
Also published as: CN114147171B

Abstract

The invention relates to the technical field of casting molding sand crushing, and discloses a molding sand crushing device for casting a brake disc, which comprises an installation frame, a crushing mechanism and a grinding mechanism, wherein the crushing mechanism is installed at the top of the installation frame; the grinding mechanism comprises a bearing shell fixed at the bottom of the mounting frame through a support, a fixed grinding wall fixed on the periphery of the top of the bearing shell, a fixed grinding column fixed in the middle of the bearing shell, and a movable grinding body arranged between the fixed grinding column and the fixed grinding wall.

Description

Molding sand reducing mechanism is used in brake disc casting

Technical Field

The invention relates to the technical field of casting molding sand crushing, in particular to a molding sand crushing device for casting a brake disc.

Background

In the casting process, after molten steel is poured into a mold, molding sand in the mold is formed into a molding sand block with high hardness due to the high temperature of the molten steel, and in order to reduce the cost, it is generally necessary to crush, crush and reuse the formed molding sand block, and a series of molding sand crushing devices are used to produce the molding sand.

For example: application publication No. CN112059107A, entitled: the invention relates to a precoated sand casting molding sand processing device and a processing technology, and provides the precoated sand casting molding sand processing device and the processing technology, wherein the precoated sand casting molding sand processing device comprises a processing shell, a crushing unit and a grinding unit, a feed inlet is formed in the middle of the upper end of the processing shell, the crushing unit is installed on the inner side wall above the middle of the processing shell, the crushing unit is arranged below the crushing unit, and the grinding unit is installed below the crushing unit; the crushing unit is added, so that the crushed massive molding sand can be effectively crushed by the crushing unit, and repeated crushing operation of the molding sand is avoided; the grinding unit is additionally arranged, so that the ground molding sand can be ground, and the molding sand is processed into granules from a bonding block shape so as to be convenient for reuse; then will grind the molding sand after the grinding and sieve, and grind the unit and can adjust its blanking hole's diameter according to the size of molding sand granule to ensure that the molding sand after the processing satisfies the operation requirement.

In the scheme, the method comprises the following steps: the crushing is mainly carried out by pushing the extrusion plate to match with the extrusion grooves on the opposite sides through the air cylinder, and the extrusion plate and the extrusion grooves are relatively parallel, so that the crushing capacity is poor and the crushing efficiency is low; wherein, the relative area of the grinding column and the filter sieve is small, the grinding quality is low, the grinding speed is slow, and the efficiency is low; after the casting process is accomplished, need with the molding sand, the mould, the foundry goods is separately, at detached process, on the foundry goods, some iron fillings impurity that remain on the mould and during the casting can hardly have some and mix to the molding sand piece in, after smashing, make in the molding sand piece can contain some impurity, these impurity can enter into kibbling molding sand in the lump together after the molding sand piece is smashed, thereby influence the quality of foundry goods in follow-up use, current device generally does not have the edulcoration function, the molding sand purity after smashing is low.

Disclosure of Invention

The invention aims to solve the technical problems of small relative area between a grinding column and a filter sieve, low grinding quality, low grinding speed and low efficiency.

The technical scheme of the invention is realized as follows: a molding sand crushing device for casting a brake disc comprises a mounting frame, a crushing mechanism arranged at the top of the mounting frame, and a grinding mechanism arranged at the bottom of the mounting frame, wherein a discharge port of the crushing mechanism is in butt joint with a feed port of the grinding mechanism, a magnetic suction mechanism is also arranged at the bottom of the mounting frame and sucks scrap iron in crushed molding sand out of the magnetic suction mechanism, the grinding mechanism comprises a bearing shell fixed at the bottom of the mounting frame through a support, a fixed grinding wall fixed on the periphery of the top of the bearing shell, a fixed grinding column fixed in the middle of the bearing shell, and a movable grinding body arranged between the fixed grinding column and the fixed grinding wall, wherein the inner side surface of the movable grinding body is matched with the outer side surface of the fixed grinding column, the outer side surface of the movable grinding body is matched with the inner side surface of the fixed grinding wall, a first through filtering hole is formed in the side surface of the movable grinding body, and a second through filtering hole is formed in the side surface of the fixed grinding wall, the diameter of the first filtering hole is larger than that of the second filtering hole, the inner side of the bottom end of the movable grinding body is mechanically sealed with the outer side of the bottom end of the fixed grinding column, and the outer side of the bottom end of the movable grinding body is mechanically sealed with the inner side of the bottom end of the fixed grinding wall.

Furthermore, the outer side surface of the fixed grinding column and the inner side surface of the fixed grinding wall are respectively provided with a grinding edge array.

Furthermore, the grinding mechanism further comprises a driving mechanism III arranged in the bearing shell, the driving mechanism III comprises a bearing arranged at the bottom end of the fixed grinding column, a ring sleeved on the outer side surface of the bearing, a gear ring fixed on the outer side surface of the bottom of the ring, a motor I arranged in the bearing shell, and a gear fixed at the output shaft end of the motor I, the gear is meshed with the gear ring, and the outer side surface of the top end of the ring is fixedly connected with the bottom end of the movable grinding body through a connecting rod.

Furthermore, the whole fixed grinding column is in a shape with a small top and a big bottom, and the top end of the fixed grinding column is in a cone-shaped structure and the bottom end of the fixed grinding column is in a cone-shaped structure.

Furthermore, the movable grinding body is of a cylindrical structure, and grinding edges are respectively arrayed on the inner side surface and the outer side surface of the movable grinding body.

Further, the activity rinding body still can be for the section of thick bamboo type structure, the circular array in side of the activity rinding body has the breach, the breach internal rotation is connected with the grinding roller, and grinds the roller lateral surface and press close to with fixed grinding post outside, fixed grinding wall inboard and breach side respectively.

Furthermore, the crushing mechanism comprises two plate walls correspondingly fixed on two sides of the top end of the mounting frame, two rotating shafts are rotatably connected between the bottoms of the two plate walls, the two rotating shafts are symmetrically arranged on two sides of the bottom of the plate walls, two side walls are correspondingly fixed on the two rotating shafts, the side ends of the side walls are extruded and sealed with the inner side surfaces of the plate walls, two fixing plates are correspondingly fixed on two sides of the top of the mounting frame, two hydraulic rods I are correspondingly installed on the two fixing plates, the telescopic ends of the two hydraulic rods I are correspondingly connected with the outer side surfaces of the side walls on the same side, two sleeve frames are correspondingly and slidably connected on the two side walls, the telescopic ends of the hydraulic rods I penetrate through the through grooves on the rear sides of the sleeve frames on the same side, crushing teeth are distributed on the inner side surfaces of the sleeve frames, an outer baffle is fixed at the bottom of the outer side surfaces of the plate walls, a sealing block is slidably connected in a bottom sliding hole of the plate walls, and a spring is arranged between the outer baffle and the sealing block, the two side ends of the sealing block are respectively sealed with the side faces of the two rotating shafts in an extrusion mode, and the inner end face of the sealing block is sealed with the end faces of the two sleeve frames in an extrusion mode.

Further, the cover frame is connected with corresponding lateral wall sliding, the lateral surface of lateral wall has actuating mechanism one through the support mounting, actuating mechanism one includes and fixes the motor two at the lateral wall lateral surface through the support, fixes the cam at the second output shaft end of motor, rotates two cooperation wheels of connecting at the cover frame lateral surface, and two cooperation wheels are corresponding to be set up in the both sides of cam, and the cam respectively with two cooperation wheel contact cooperations.

Further, grind mechanism still including fixing the unloading slope in fixed grinding wall lateral surface bottom, fix the collection annular in the mounting bracket bottom, collect the annular setting under unloading slope excircle, be provided with the discharge gate on the collection annular.

Further, mechanism is inhaled to magnetism is including fixing the ring frame in the mounting bracket bottom, evenly distributed at the inboard guide pulley of ring frame, and the guide pulley intermediate strut who distributes has the carousel, install actuating mechanism two on the ring frame, actuating mechanism two drive the rotary disk rotatory, the rotary disk bottom surface is parallel and presses close to with unloading slope side, the rotary disk bottom surface is inlayed and is had the magnetic ring, unloading slope side is fixed with scrapes the board groove, it is higher than the opposite side to scrape one side in board groove, scrape the relatively high one side conflict magnetic ring bottom surface in board groove, and the magnetic ring is rotatory to higher one side from scraping the lower one side in board groove.

The beneficial effects of the invention are summarized as follows: firstly, when the movable grinding body rotates, the movable grinding body can be ground with the fixed grinding column for the first stage and can be ground with the fixed grinding wall for the second stage, so that the internal and external two-stage simultaneous grinding is realized under the condition of providing one power, the utilization rate of energy can be effectively improved, meanwhile, the mode is two-stage step-by-step grinding, and the movable grinding body has larger relative areas with the fixed grinding column and the fixed grinding wall respectively, so that the grinding quality is high, the grinding speed is high, and the efficiency is high; secondly, scrap iron in the crushed molding sand can be removed by adding the magnetic attraction mechanism, so that the crushed molding sand is cleaner, the purity of the crushed molding sand can be effectively improved, and the subsequent use is more convenient; its third, two lateral walls are equivalent to two arm of forces, can increase the occlusal force between two cover frames, thereby can smash the great molding sand piece of hardness, actuating mechanism one mainly drives the cover frame and carries out the motion about, the main advantage that sets up like this lies in, when two lateral wall rotatory extrusion broken molding sand pieces, two cover frames can also drive crushing tooth and carry out the motion about, produce the rubbing with the hands and move about, can be faster open the molding sand piece breakage, can effectively improve broken speed, whole crushing ability and crushing efficiency are improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 3 is an enlarged view of a portion of the structure of fig. 2.

Fig. 4 is a schematic structural view of the crushing mechanism of the present invention.

Fig. 5 is a schematic structural diagram of a first driving mechanism of the present invention.

Fig. 6 is an enlarged view of a portion of the structure shown at B in fig. 2 according to the present invention.

Fig. 7 is a schematic structural diagram of a second driving mechanism of the present invention.

Fig. 8 is a schematic structural diagram of a second embodiment of the present invention.

In the figure: 1 mounting rack, 2 crushing mechanism, 3 grinding mechanism, 4 magnetic attraction mechanism, 5 plate walls, 6 outer baffle plates, 7 spring, 8 sealing block, 9 rotating shaft, 10 driving mechanism I, 11 fixing plate, 12 hydraulic rod I, 13 side wall, 14 sleeve frame, 15 crushing tooth, 16 matching wheel, 17 cam, 18 motor II, 19 lower sealing tooth, 20 bearing shell, 21 fixed grinding wall, 22 fixed grinding column, 23 movable grinding body, 24 grinding edge, 25 filtering hole I, 26 filtering hole II, 27 driving mechanism III, 28 bearing, 29 ferrule, 30 gear ring, 31 motor I, 32 gear, 33 connecting rod, 34 grinding roller, 35 notch, 36 blanking slope, 37 collecting ring groove, 38 ring frame, 39 guide wheel, 40 rotating disc, 41 driving mechanism II, 42 magnetic ring, 43 scraper groove.

Detailed Description

In order to further understand the present invention, a molding sand crushing device for brake disc casting according to the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

In the casting process of the molding sand, the molding sand can be agglomerated into molding sand blocks due to the influence of high temperature, and in order to reduce the cost, the agglomerated molding sand blocks are generally required to be crushed and smashed into powder so as to be reused again; therefore, some devices for recycling and crushing molding sand are applied to crush large molding sand blocks, and generally the large molding sand blocks are crushed step by step, namely the large molding sand blocks are crushed into small molding sand blocks, and then the small molding sand blocks are crushed into finer molding sand, so that the molding sand can be recycled; the general process of crushing and smashing the molding sand comprises the following steps that firstly, a crushing mechanism 2 is used for crushing large molding sand blocks, then the large molding sand blocks are crushed into smaller molding sand blocks to enter a grinding mechanism 3, the smaller molding sand blocks are ground into molding sand particles through the grinding mechanism 3, and then casting residual scrap iron in the molding sand particles is removed through a magnetic attraction mechanism 4, so that the whole crushing and impurity removing process of the molding sand is realized; this scheme has carried out breakthrough improvement on crushing mechanism 2, grinding mechanism 3, has improved its breakage, crushing efficiency, has increased magnetism simultaneously and has inhaled mechanism 4, can get rid of remaining iron fillings impurity in the molding sand granule to obtain the higher molding sand granule of purity, the subsequent use of being more convenient for.

The first embodiment is as follows: as shown in fig. 1, the molding sand crushing device for brake disc casting comprises an installation frame 1, a crushing mechanism 2 installed at the top of the installation frame 1, and a grinding mechanism 3 installed at the bottom of the installation frame 1, wherein a discharge port of the crushing mechanism 2 is in butt joint with a feed port of the grinding mechanism 3, a magnetic suction mechanism 4 is also installed at the bottom of the installation frame 1, and the magnetic suction mechanism 4 sucks out scrap iron in crushed molding sand; scrap iron in the crushed molding sand can be removed by adding the magnetic attraction mechanism 4, so that the crushed molding sand is cleaner, the purity of the crushed molding sand can be effectively improved, and the subsequent use is more convenient; as shown in fig. 2, the grinding mechanism 3 includes a bearing housing 20 fixed at the bottom of the mounting frame 1 through a bracket, a fixed grinding wall 21 fixed at the top periphery of the bearing housing 20, a fixed grinding column 22 fixed in the middle of the bearing housing 20, a movable grinding body 23 arranged between the fixed grinding column 22 and the fixed grinding wall 21, grinding edges 24 respectively arrayed on the outer side surface of the fixed grinding column 22 and the inner side surface of the fixed grinding wall 21, the inner side surface of the movable grinding body 23 matching with the outer side surface of the fixed grinding column 22, the outer side surface of the movable grinding body 23 matching with the inner side surface of the fixed grinding wall 21, a first through filtering hole 25 arranged on the side surface of the movable grinding body 23, a second through filtering hole 26 arranged on the side surface of the fixed grinding wall 21, the diameter of the first filtering hole 25 being larger than that of the second filtering hole 26, and the bottom end inner side of the movable grinding body 23 mechanically sealed with the outer side of the bottom end of the fixed grinding column 22, the outer side of the bottom end of the movable grinding body 23 is mechanically sealed with the inner side of the bottom end of the fixed grinding wall 21, as shown in fig. 1, a horn-shaped ring opening is arranged at the top end of the movable grinding body 23, and the structure is mainly arranged to enable the molding sand blocks crushed by the crushing mechanism 2 to be quickly sent between the movable grinding body 23 and the fixed grinding column 22, so that a guiding and anti-splashing effect is achieved; the biggest improvement point of the movable grinding body 23 is that when the movable grinding body 23 rotates, the movable grinding body can be ground with the fixed grinding column 22 for the first stage and the fixed grinding wall 21 for the second stage, so that the two-stage simultaneous grinding inside and outside can be realized under the condition of providing one power, the utilization rate of energy can be effectively improved, meanwhile, the mode is two-stage grinding step by step, the movable grinding body 23 has larger relative areas with the fixed grinding column 22 and the fixed grinding wall 21 respectively, the grinding quality is high, the grinding speed is high, the efficiency is high, and a protective shell which is covered on the grinding mechanism 3 for protection is fixed on the mounting frame 1; as shown in fig. 2 and 3, the grinding mechanism 3 further includes a third driving mechanism 27 installed in the bearing housing 20, the third driving mechanism 27 includes a bearing 28 installed at the bottom end of the fixed grinding column 22, a ring 29 sleeved on the outer side surface of the bearing 28, a ring gear 30 fixed on the outer side surface of the bottom of the ring 29, a first motor 31 installed in the bearing housing 20, a gear 32 fixed at the output shaft end of the first motor 31, the gear 32 is engaged with the ring gear 30, the outer side surface of the top end of the ring 29 is fixedly connected with the bottom end of the movable grinding body 23 through a connecting rod 33, and the third driving mechanism 27 mainly provides power to drive the movable grinding body 23 to rotate; the whole fixed grinding column 22 is in a shape of small top and big bottom, the top end of the fixed grinding column 22 is in a cone-shaped structure, the bottom end of the cone-shaped structure is in a circular truncated cone-shaped structure, the fixed grinding column 22 is in the structure, the distance between the fixed grinding column and the movable grinding body 23 gradually narrows from top to bottom, and when the crushed sand molding blocks enter the gradually narrowing gap, the sand molding blocks can be gradually ground from large to small, so that gradual grinding transition is realized, the sand molding blocks with different sizes can be ground, and the application range is large; the movable grinding body 23 is a cylindrical structure, the side surface of the movable grinding body 23 is circularly arrayed with notches 35, the notches 35 are rotationally connected with grinding rollers 34, the outer side surfaces of the grinding rollers 34 are respectively close to the outer side of the fixed grinding column 22, the inner side of the fixed grinding wall 21 and the side ends of the notches 35, when the movable grinding body 23 rotates, the movable grinding body can drive the grinding rollers 34 to rotate around the center of the fixed grinding column 22, so that the inner side of the grinding rollers 34 is matched with the outer side surface of the fixed grinding column 22 for grinding, and the outer side of the grinding rollers 34 is matched with the inner side surface of the fixed grinding wall 21 for grinding; when the movable grinding body 23 rotates, the sand particles between the fixed grinding column 22 and the movable grinding body 23 roll the grinding roller 34, the grinding roller 34 rotates, and when the grinding roller 34 rotates, the relative movement between the grinding roller and the fixed grinding column 22 and between the grinding roller and the fixed grinding wall 21 is accelerated, so that the grinding efficiency can be greatly improved; as shown in fig. 4 and 5, the crushing mechanism 2 includes two plate walls 5 fixed on two sides of the top of the mounting frame 1, two rotating shafts 9 rotatably connected between the bottoms of the two plate walls 5, two rotating shafts 9 are symmetrically arranged on two sides of the bottom of the plate wall 5, two side walls 13 are fixed on the two rotating shafts 9, the side ends of the side walls 13 are sealed with the inner side of the plate wall 5 by extrusion, two fixing plates 11 are fixed on two sides of the top of the mounting frame 1, two hydraulic rods one 12 are mounted on the two fixing plates 11, the telescopic ends of the two hydraulic rods one 12 are connected with the outer side of the side wall 13 on the same side, two sleeves 14 are connected on the two side walls 13 in a sliding manner, the telescopic ends of the hydraulic rods one 12 penetrate through the through slots on the rear side of the sleeves 14 on the same side, crushing teeth 15 are distributed on the inner side of the sleeves 14, an outer baffle 6 is fixed on the bottom of the outer side of the plate wall 5, and a sealing block 8 is connected in a sliding manner in the bottom sliding hole of the plate wall 5, a spring 7 is arranged between the outer baffle 6 and the sealing block 8, the two side ends of the sealing block 8 are respectively sealed with the side surfaces of the two rotating shafts 9 in an extruding way, the inner end surface of the sealing block 8 is sealed with the end surfaces of the two sleeve frames 14 in an extruding way, when the two hydraulic levers one 12 are actuated, the two side walls 13 rotate around the rotation axis 9, and then the two sleeve frames 14 move towards each other, the crushing teeth 15 on the side surfaces of the two sleeve frames 14 are oppositely and crossly meshed, thereby breaking the molding sand block, the two side walls 13 are equivalent to two force arms, the biting force between the two sleeve frames 14 can be increased, so that the molding sand block with larger hardness can be crushed, the crushing teeth 15 become smaller from top to bottom and are arranged to become denser gradually, the mode ensures that the molding sand block with larger hardness can be crushed into smaller molding sand block first, then the smaller and denser crushing teeth 15 at the lower part can crush the sand into smaller molding sand blocks which are also gradually crushed; the sleeve frame 14 is connected with the corresponding side wall 13 in a sliding mode, a first driving mechanism 10 is installed on the outer side face of the side wall 13 through a support, the first driving mechanism 10 comprises a second motor 18 fixed on the outer side face of the side wall 13 through the support, a cam 17 fixed at the output shaft end of the second motor 18 and two matching wheels 16 connected to the outer side face of the sleeve frame 14 in a rotating mode, the two matching wheels 16 are correspondingly arranged on two sides of the cam 17, the cam 17 is respectively in contact fit with the two matching wheels 16, and the first driving mechanism 10 mainly drives the sleeve frame 14 to move left and right; as shown in fig. 6 and 7, the grinding mechanism 3 further includes a blanking slope 36 fixed at the bottom of the outer side surface of the fixed grinding wall 21, and a collecting ring groove 37 fixed at the bottom end of the mounting frame 1, the collecting ring groove 37 is arranged right below the outer circle of the blanking slope 36, a discharge hole is arranged on the collecting ring groove 37, the ground molding sand is discharged from the second filtering hole 26, and then gradually slides to the collecting ring groove 37 from the blanking slope 36, and then is discharged from the discharge hole on the collecting ring groove 37 for centralized collection, the blanking slope 36 can slow down the flow rate of the ground molding sand, and can make the magnetic ring 42 magnetically attract more time, so that more iron filings can be sucked out, and the purity of the ground molding sand can be effectively improved; the magnetic suction mechanism 4 comprises a ring frame 38 fixed at the bottom of the mounting frame 1, guide wheels 39 evenly distributed on the inner side of the ring frame 38, a rotary disc 40 is supported in the middle of the distributed guide wheels 39, a driving mechanism II 41 is installed on the ring frame 38, the driving mechanism II 41 drives the rotary disc 40 to rotate, the bottom surface of the rotary disc 40 is parallel to and close to the side surface of the blanking slope 36, a magnetic ring 42 is embedded on the bottom surface of the rotary disc 40, a scraper groove 43 is fixed on the side surface of the blanking slope 36, one side of the scraper groove 43 is higher than the other side, the side with the scraper groove 43 relatively higher than the scraper groove 43 is abutted against the bottom surface of the magnetic ring 42, the magnetic ring 42 rotates from the lower side to the higher side of the scraper groove 43, the driving mechanism II 41 drives the rotary disc 40 to rotate, the rotary disc 40 drives the magnetic ring 42 to rotate, when the magnetic ring 42 rotates to the higher side of the scraper groove 43, the side with the higher side of the scraper groove 43 scrapes iron chips adsorbed on the bottom surface of the magnetic ring 42, so that the iron chips are accumulated to a certain amount, because the magnetic force of the magnetic ring 42 is limited, some scrap iron falls into the scraper groove 43 and flows down along the scraper groove 43, and then the falling scrap iron is collected in a centralized manner, so that the scrap iron in the crushed molding sand is removed; in this scheme, two cover frame 14 bottom medial surfaces are fixed with down seals tooth 19, and the lower tooth 19 meshing that seals of two cover frame 14 bottom medial surfaces, set up like this, mainly make the bottom of two cover frames 14 sealed, thereby can not make great molding sand piece just drop grinding mechanism 3 inside under the circumstances of not smashing, the molding sand that breaks into the fritter can become littleer granule through the extrusion of sealing tooth 19 down, thereby alleviate grinding mechanism 3's load, grinding mechanism 3 only need grind the less molding sand granule in broken back, actuating mechanism two 41 mainly are the mechanism that drives rotary disk 40 rotation, it mainly provides power, can choose the motor among the prior art for use, the speed reducer etc. is in the drive through the gyro wheel, or adopt other mechanisms that can drive rotary disk 40 rotation.

In the second embodiment, as shown in fig. 8, the difference between the present embodiment and the first embodiment is: in this embodiment, the movable polishing body 23 is a cylindrical structure, the inner side surface and the outer side surface of the movable polishing body 23 are respectively arrayed with the polishing ribs 24, and the polishing ribs 24 added to the side surfaces of the movable polishing body 23 are mainly matched with the polishing ribs 24 on the side surfaces of the fixed polishing columns 22 and the polishing ribs 24 on the side surfaces of the fixed polishing walls 21 respectively to achieve faster polishing.

When in use: when casting, firstly, water is sprayed to the molding sand particles to enable the molding sand particles to have certain plasticity, then the molding sand is pressed and embedded into a mold through the mold, then the mold is taken out, the mold is buckled again, then molten steel is injected into the mold, and after the molten steel is cooled, a cast product can be formed in the molding sand; because the molten steel has ultrahigh temperature when entering the mould, the molding sand is formed into molding sand blocks with extremely high hardness due to the high temperature, and the molding sand can be broken only by great force; during crushing, large molding sand blocks are firstly placed between two sleeve frames 14, then two hydraulic rods I12 are controlled to act, the two hydraulic rods I12 simultaneously push the two side walls 13 to rotate, the two side walls 13 drive the two sleeve frames 14 to move oppositely, further crushing teeth 15 on opposite surfaces of the two sleeve frames 14 are meshed, so that the molding sand blocks between the two sleeve frames are crushed into small blocks, the small molding sand blocks are discharged from a discharge hole formed between the bottom ends of the two sleeve frames 14, a motor II 18 of a driving mechanism I10 drives a cam 17 to rotate at the same time of crushing, the cam 17 rotates to drive the sleeve frames 14 to move towards one side through a matching wheel 16 on one side, then the large-radius side of the cam 17 rotates to the other side to drive the matching wheel 16 on the other side to move the sleeve frames 14 towards the other side, and the sleeve frames 14 can move left and right on the side walls 13 in this way, furthermore, when the two side walls 13 are pressed and crushed, the two sleeve frames 14 continuously move left and right at a high speed, which is equivalent to continuously 'gnawing' the two sides of the molding sand block, the molding sand block can be gradually crushed, and in addition, the two sleeve frames 14 can drive the molding sand block to continuously twist and rotate, the direction is changed, the molding sand block is not easily clamped between the two sleeve frames 14, and the occurrence of machine faults can be effectively reduced; the broken sand blocks pass through the lower sealing teeth 19 at the bottom and are squeezed and broken again, the lower sealing teeth 19 at the bottom can also prevent a larger sand block from being discharged, then the smaller broken sand block falls into a gap between the movable grinding body 23 and the fixed grinding column 22, then the motor I31 is controlled to work, the motor I31 drives the gear 32 to rotate, the gear 32 drives the gear ring 30 to rotate, the gear ring 30 drives the ferrule 29 to rotate, the ferrule 29 can smoothly rotate under the support of the bearing 28, meanwhile, the ferrule 29 drives the movable grinding body 23 to rotate through the connecting rod 33, the movable grinding body 23 is matched with the fixed grinding column 22 inside to carry out first-stage grinding to grind the small sand blocks into sand particles, and then when the sand particles are ground to be smaller and can pass through the filter hole I25, the sand particles are discharged from the filter hole I25 and enter between the movable grinding body 23 and the fixed grinding wall 21, then the movable grinding body 23 is matched with the fixed grinding wall 21 at the outer side to carry out the second-stage grinding, thereby grinding small molding sand particles into smaller particles, realizing the integral crushing and smashing, then the grinded molding sand particles fall along the outer side of the fixed grinding wall 21 and slide to the collecting ring groove 37 from the blanking slope 36, the molding sand particles collected by the collecting ring groove 37 are finally discharged along the discharge port of the collecting ring groove 37, a collecting box or a collecting bag is arranged below the discharge port of the collecting ring groove 37 to intensively collect the discharged molding sand particles, the discharging is finished, when discharging is finished, the second driving mechanism 41 drives the rotating disc 40 to rotate, the rotating disc 40 drives the magnetic ring 42 to rotate, the magnetic ring 42 is very close to the blanking slope 36, so that scrap iron impurities in the molding sand particles sliding on the blanking slope 36 can be adsorbed onto the magnetic ring 42, then the magnetic ring 42 continues to rotate, when the position of the scraper groove 43 is reached, scrape the higher one side of scraper blade groove 43 and scrape the scraper blade groove 43 with the iron fillings impurity on the magnetic ring 42 in, iron fillings impurity is discharged along scraping the scraper blade groove 43, accomplishes the edulcoration, later carries out subsequent processing with comparatively pure molding sand granule, can carry out the reuse.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a brake disc is foundry with molding sand reducing mechanism, includes mounting bracket (1), installs at crushing mechanism (2) at mounting bracket (1) top, installs grinding mechanism (3) in mounting bracket (1) bottom, the discharge gate of crushing mechanism (2) and the feed inlet butt joint of grinding mechanism (3), its characterized in that: the magnetic suction mechanism (4) is further installed at the bottom of the mounting frame (1), the grinding mechanism (3) comprises a bearing shell (20) fixed to the bottom of the mounting frame (1) through a support, a fixed grinding wall (21) fixed to the periphery of the top of the bearing shell (20), a fixed grinding column (22) fixed to the middle of the bearing shell (20), and a movable grinding body (23) arranged between the fixed grinding column (22) and the fixed grinding wall (21), wherein the inner side surface of the movable grinding body (23) is matched with the outer side surface of the fixed grinding column (22), the outer side surface of the movable grinding body (23) is matched with the inner side surface of the fixed grinding wall (21), a first penetrating filter hole (25) is formed in the side surface of the movable grinding body (23), a second penetrating filter hole (26) is formed in the side surface of the fixed grinding wall (21), and the diameter of the first filter hole (25) is larger than that of the second filter hole (26), the inner side of the bottom end of the movable grinding body (23) is mechanically sealed with the outer side of the bottom end of the fixed grinding column (22), and the outer side of the bottom end of the movable grinding body (23) is mechanically sealed with the inner side of the bottom end of the fixed grinding wall (21).

2. The molding sand crushing device for casting the brake disc as claimed in claim 1, wherein: and grinding edges (24) are respectively arrayed on the outer side surface of the fixed grinding column (22) and the inner side surface of the fixed grinding wall (21).

3. The molding sand crushing device for casting the brake disc as claimed in claim 2, wherein: the grinding mechanism (3) further comprises a driving mechanism III (27) arranged in the bearing shell (20), the driving mechanism III (27) comprises a bearing (28) arranged at the bottom end of the fixed grinding column (22), a ferrule (29) sleeved on the outer side surface of the bearing (28), a gear ring (30) fixed on the outer side surface of the bottom of the ferrule (29), a motor I (31) arranged in the bearing shell (20), and a gear (32) fixed at the output shaft end of the motor I (31), wherein the gear (32) is meshed with the gear ring (30), and the outer side surface of the top end of the ferrule (29) is fixedly connected with the bottom end of the movable grinding body (23) through a connecting rod (33).

4. The molding sand crushing device for brake disc casting according to claim 2 or 3, wherein: the whole fixed grinding column (22) is in a shape of small top and big bottom, and the top end of the fixed grinding column (22) is in a cone-shaped structure and the bottom end of the fixed grinding column is in a circular truncated cone-shaped structure.

5. The molding sand crushing device for casting the brake disc as claimed in claim 4, wherein: the movable grinding body (23) is of a cylindrical structure, and grinding edges (24) are respectively arrayed on the inner side surface and the outer side surface of the movable grinding body (23).

6. The molding sand crushing device for casting the brake disc as claimed in claim 4, wherein: the movable grinding body (23) is of a cylindrical structure, notches (35) are formed in the side face circular array of the movable grinding body (23), grinding rollers (34) are connected in the notches (35) in a rotating mode, and the outer side faces of the grinding rollers (34) are respectively close to the outer side of the fixed grinding column (22), the inner side of the fixed grinding wall (21) and the side ends of the notches (35).

7. The molding sand crushing device for casting the brake disc as claimed in claim 1, wherein: the crushing mechanism (2) comprises two plate walls (5) which are correspondingly fixed on two sides of the top end of the mounting frame (1) and two rotating shafts (9) which are rotatably connected between the bottoms of the two plate walls (5), the two rotating shafts (9) are symmetrically arranged on two sides of the bottom of the plate walls (5), two side walls (13) are correspondingly fixed on the two rotating shafts (9), the side ends of the side walls (13) are in extrusion sealing with the inner side surfaces of the plate walls (5), two fixing plates (11) are correspondingly fixed on two sides of the top of the mounting frame (1), two hydraulic rods I (12) are correspondingly installed on the two fixing plates (11), the telescopic ends of the two hydraulic rods I (12) are correspondingly connected to the outer side surfaces of the side walls (13) on the same side, two sleeve frames (14) are correspondingly and slidably connected to the two side walls (13), and the telescopic ends of the hydraulic rods I (12) penetrate through grooves on the rear sides of the sleeve frames (14) on the same side, crushing teeth (15) are distributed on the inner side face of the sleeve frame (14), an outer baffle (6) is fixed to the bottom of the outer side face of the plate wall (5), a sealing block (8) is connected to the bottom end of the plate wall (5) in a sliding hole in the sliding hole, a spring (7) is arranged between the outer baffle (6) and the sealing block (8), two side ends of the sealing block (8) are respectively sealed with the side faces of the two rotating shafts (9) in an extrusion mode, and the inner end face of the sealing block (8) is sealed with the end faces of the two sleeve frames (14) in an extrusion mode.

8. The molding sand crushing device for casting the brake disc as claimed in claim 7, wherein: cover frame (14) and corresponding lateral wall (13) sliding connection, the lateral surface of lateral wall (13) has actuating mechanism (10) through the support mounting, actuating mechanism (10) are including fixing motor two (18) at lateral wall (13) lateral surface through the support, fix cam (17) at motor two (18) output shaft end, rotate two cooperation wheels (16) of connecting at cover frame (14) lateral surface, and two cooperation wheels (16) are corresponding to be set up in the both sides of cam (17), and cam (17) respectively with two cooperation wheels (16) contact cooperation.

9. The molding sand crushing device for casting the brake disc as claimed in claim 4, wherein: grind mechanism (3) still including fixing unloading slope (36) in fixed grinding wall (21) lateral surface bottom, fix collection annular (37) in mounting bracket (1) bottom, collect annular (37) and set up under unloading slope (36) excircle, be provided with the discharge gate on collecting annular (37).

10. The molding sand crushing device for casting the brake disc as claimed in claim 1, wherein: magnetic attraction mechanism (4) is including fixing ring frame (38) in mounting bracket (1) bottom, evenly distributed is at ring frame (38) inboard guide pulley (39), and the guide pulley (39) intermediate strut that distributes has carousel (40), install actuating mechanism two (41) on ring frame (38), actuating mechanism two (41) drive rotary disk (40) are rotatory, rotary disk (40) bottom surface and unloading slope (36) side are parallel and press close to, rotary disk (40) bottom surface is inlayed and is had magnetic ring (42), unloading slope (36) side is fixed with scrapes board groove (43), it is higher than the opposite side to scrape one side of board groove (43), scrape board groove (43) relatively high one side conflict magnetic ring (42) bottom surface, and magnetic ring (42) from scraping the rotation of the lower one side of board groove (43) to higher one side.