CN211915395U

CN211915395U - Sand casting equipment that can process in batches

Info

Publication number: CN211915395U
Application number: CN202020437981.7U
Authority: CN
Inventors: 蒋晓明
Original assignee: Global Machining Industries Suzhou Co ltd
Current assignee: Global Machining Industries Suzhou Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-11-13
Anticipated expiration: 2030-03-31

Abstract

The utility model discloses a sand casting equipment that can process in batches, which comprises a housin, the inside downside of casing is provided with first hydraulic means, and is provided with the holding down plate at first hydraulic means top, the holding down plate sets up at the incasement portion that swages down, and the incasement right side that swages down is provided with the extension plate, the right-hand lifting platform that is provided with of extension plate, and the lifting platform is connected with first lead screw drive arrangement, the case left that swages down is provided with multisection hydraulic means and push pedal, and the push pedal setting is on multisection hydraulic means right side. This sand casting equipment that can process in batches is provided with top board, holding down plate and template, and second hydraulic means promotes the top board rebound, extrudees the sand mould that the sand grain formed the second side until the template cooperation of holding down plate and mounting panel downside, and on the same way, the sand mould of both sides about being convenient for accomplish simultaneously is extruded with the template of mounting panel upside to the sand mould that the sand grain formed the first side, improves production efficiency, is convenient for process in batches.

Description

Sand casting equipment that can process in batches

Technical Field

The utility model relates to a sand casting equipment technical field specifically is a sand casting equipment that can process in batches.

Background

The casting is a processing method of casting liquid metal into a casting cavity adaptive to the shape of a part, and obtaining the part or a blank after the liquid metal is cooled.

The moulding is extruded to solitary one side sand mould usually to current sand casting equipment, then the sand mould amalgamation of upper and lower two sides forms complete sand mould, this kind of processing step is long, low in production efficiency, be not convenient for process in batches, current sand casting equipment does not filter the sand grain usually when filling, and the unable template of laminating of sand grain that hardens, influence the moulding effect of sand mould, and current sand casting equipment passes through the inside movable sand grain of air gun washing sand mould cavity, but partial sand mould cavity structure is complicated, the movable sand grain of unable discharge completely, lead to casting the finished product sand inclusion, to above-mentioned problem, need improve current equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sand casting equipment that can process in batches, in order to solve the current sand casting equipment that provides among the above-mentioned background art and extrude moulding alone one side sand mould usually, then the sand mould amalgamation on upper and lower two sides forms complete sand mould, this kind of processing step is long, low in production efficiency, be not convenient for process in batches, current sand casting equipment does not filter the grains of sand usually when packing, and the unable template of laminating of the grains of sand that hardens, influence the moulding effect of sand mould, and current sand casting equipment passes through the inside movable grains of air gun washing sand mould cavity, but partial sand mould cavity structure is complicated, unable movable grains of sand of discharging completely, lead to the problem of casting finished product double-layered sand.

In order to achieve the above object, the utility model provides a following technical scheme: a sand casting device capable of being processed in batches comprises a shell, wherein a first hydraulic device is arranged on the lower side inside the shell, a lower pressing plate is arranged at the top of the first hydraulic device, the lower pressing plate is arranged inside a lower molding box, an extension plate is arranged on the right side of the lower molding box, a lifting table is arranged on the right side of the extension plate and connected with a first lead screw driving device, a multi-section hydraulic device and a push plate are arranged on the left side of the lower molding box, the push plate is arranged on the right side of the multi-section hydraulic device, an upper molding box is arranged above the lower molding box, an upper pressing plate is arranged above the upper molding box and connected with the lower end of a second hydraulic device, the second hydraulic device is fixed at the top of the shell, the left side of the upper molding box and the left side of the lower molding box are both connected with the inner wall of the shell through a third hydraulic device, and, the connecting piece is provided with a sliding rod in a penetrating manner, the upper end and the lower end of the sliding rod are respectively connected with the inner wall of the shell, the inner wall surface of the cope and the inner wall surface of the drag are provided with exhaust grooves, the outer sides of the upper pressure plate and the lower pressure plate are rotatably connected with a scraper, torsion springs are arranged at the joints of the scraper, the upper pressure plate and the lower pressure plate, the middle part of the shell is provided with a second lead screw driving device, the second lead screw driving device is arranged between the drag and the cope, a dust suction plate and a mounting plate are arranged on the second lead screw driving device in a penetrating manner, the mounting plate is arranged at the right side of the dust suction plate, templates are arranged at the upper side and the lower side of the mounting plate through bolts, the mounting plate is arranged between the drag and the cope, the surface of the dust suction plate is provided with a dust suction port, the dust suction, the utility model discloses a screening device, including casing, casing rear side, screening board, support frame, screen mesh, vibrating motor, support frame rear side and support, the casing rear side is opened and is equipped with the opening, and the opening is seted up in last molding box top and lower molding box top, inside screen plate and the carriage of having run through of opening, and the carriage passes through compression spring and is connected with the screen plate, the screen mesh has been seted up to screen plate lower surface, and is provided with vibrating motor in the screening board bottom, support frame rear side and support fixed connection, and the support setting is in the casing rear side, the support bottom is provided with electronic slip table, screening board.

Preferably, one side of the scraper on the outer side of the lower pressing plate, which is far away from the lower pressing plate, is arranged inside the exhaust groove in the lower molding box, and the scraper on the outer side of the lower pressing plate is connected with the exhaust groove in the lower molding box in a sliding manner.

Preferably, the uppermost end of the drag, the uppermost end of the extension plate, and the lowermost end of the push plate are located on the same horizontal plane.

Preferably, the centre line of the drag, the centre line of the cope and the centre line of the pattern plate are located on the same vertical line.

Preferably, the connecting pieces are arranged in two groups, four connecting pieces are arranged in each group, and the two groups of connecting pieces are arranged at four corners outside the upper molding box and four corners outside the lower molding box respectively.

Preferably, the outer diameter of the die plate is the same as the outer diameter of the upper platen and the outer diameter of the lower platen, and the outer diameter of the upper platen is the same as the inner diameter of the cope and the inner diameter of the drag.

Preferably, the screening plate is arranged in an inclined manner, and the height of the front end of the screening plate is lower than that of the rear end of the screening plate.

Preferably, the lowermost end of the support frame is located above the lowermost end of the opening, and the uppermost end of the opening is located above the uppermost end of the screening plate.

Preferably, the area of the sieve holes is smaller than that of the upper pressing plate or that of the lower pressing plate, and the sieve holes are located right above the upper pressing plate and right above the lower pressing plate.

Compared with the prior art, the beneficial effects of the utility model are that: the sand casting equipment which can be processed in batch,

(1) the sand mold forming machine is provided with an upper pressing plate, a lower pressing plate and a template, wherein the third hydraulic device pushes the upper molding box and the lower molding box to move towards the middle of the shell, meanwhile, the first hydraulic device pushes the lower pressing plate to move upwards, the second hydraulic device pushes the upper pressing plate to move upwards until the lower pressing plate and the template on the lower side of the mounting plate are matched with each other to extrude sand grains to form a sand mold on the lower half side, and similarly, the upper pressing plate and the template on the upper side of the mounting plate extrude the sand grains to form a sand mold on the upper half side, so that the sand molds on the upper side and the lower;

(2) the sand mould splicing device is provided with an extension plate, a lifting platform and a push plate, after sand moulds on the upper side and the lower side are spliced, a third hydraulic device on the upper side pulls an upper moulding box to be separated from the upper side of the sand mould, a third hydraulic device on the lower side pulls a lower moulding box to move downwards until the uppermost end of the lower moulding box and the lowermost end of the push plate are positioned on the same horizontal plane, a first hydraulic device pushes the sand mould to move upwards through a lower press plate until the lowermost end of the sand mould and the uppermost end of the lower moulding box are positioned on the same horizontal plane, the third hydraulic device pushes the sand mould to move rightwards through the push plate, so that the sand mould moves to the lifting platform through the extension plate, a first lead screw driving device pushes the lifting platform to;

(3) the sand discharging device is provided with an air discharging groove, a scraper and a torsion spring, when the lower pressing plate is matched with a template on the lower side of the mounting plate to extrude sand grains, the air pressure in the lower molding box is increased, the air pushes the scraper on the outer side of the lower pressing plate to rotate downwards, so that the air is discharged through the air discharging groove, when the air pressure is balanced, the torsion spring pushes the scraper to rotate, so that one side of the scraper, away from the lower pressing plate, is attached to the inner wall of the air discharging groove, when the lower pressing plate moves towards the lower side of the lower molding box, the scraper scrapes the sand grains in the air discharging groove, and in a similar way, the scraper on the outer side of the upper pressing plate scrapes the sand grains in the air discharging groove in the upper molding;

(4) the dust collection device is provided with a dust collection plate and a dust collection port, the second lead screw driving device pushes the dust collection plate and the mounting plate to move rightwards until the dust collection plate moves between the upper molding box and the lower molding box, the third hydraulic device pushes the upper molding box and the lower molding box to be attached to the dust collection plate, the dust collection barrel extracts air, so that the air enters the dust collection barrel through the dust collection port, and meanwhile, movable sand particles in the casting cavity enter the dust collection barrel along with the air under the action of negative pressure, so that the movable sand particles in the casting cavity can be conveniently and rapidly cleaned, and the use is more convenient;

(5) be provided with screening board, sieve mesh and vibrating motor, electronic slip table promotes the support and moves forward, and inside support frame and screening board got into the casing through the opening, material feeding device transported substance got into the screening board, and vibrating motor drove the vibration of screening board, and the sieve mesh on the screening board simultaneously stops the grains of sand that hardens and gets into lower moulding box and cope moulding box, has improved the finished product quality of sand mould.

Drawings

FIG. 1 is a schematic view of the cross-sectional structure of the present invention;

FIG. 2 is a schematic diagram of the right side view of the cross-sectional structure of the present invention;

FIG. 3 is a schematic top view of the cross-sectional structure of the present invention;

FIG. 4 is a schematic top view of the cross-sectional structure of the drag box of the present invention;

FIG. 5 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 6 is an enlarged schematic view of the structure of FIG. 1 at B according to the present invention;

fig. 7 is an enlarged schematic structural diagram of the present invention at C in fig. 4.

In the figure: 1. the device comprises a shell, 2, a first hydraulic device, 3, a lower pressing plate, 4, a lower molding box, 5, an extension plate, 6, a lifting table, 7, a first lead screw driving device, 8, a multi-section hydraulic device, 9, a push plate, 10, an upper molding box, 11, an upper pressing plate, 12, a second hydraulic device, 13, a third hydraulic device, 14, a connecting piece, 15, a sliding rod, 16, an exhaust groove, 17, a scraping plate, 18, a torsion spring, 19, a second lead screw driving device, 20, a dust suction plate, 21, a mounting plate, 22, a bolt, 23, a template, 24, a dust suction opening, 25, a dust suction barrel, 26, an opening, 27, a screening plate, 28, a support frame, 29, a compression spring, 30, a sieve hole, 31, a vibration motor, 32, a support, 33, an electric sliding table, 34 and a material conveying device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a sand casting device capable of processing in batches is disclosed, as shown in figures 1 and 3, a first hydraulic device 2 is arranged at the lower side inside a shell 1, a lower pressing plate 3 is arranged at the top of the first hydraulic device 2, one side of a scraper 17 at the outer side of the lower pressing plate 3, which is far away from the lower pressing plate 3, is arranged inside an exhaust duct 16 inside a lower molding box 4, the connection mode between the scraper 17 at the outer side of the lower pressing plate 3 and the exhaust duct 16 inside the lower molding box 4 is sliding connection, when the lower pressing plate 3 moves towards the lower side of the lower molding box 4, the scraper 17 at the outer side of the lower pressing plate 3 cleans sand particles inside the exhaust duct 16 inside the lower molding box 4, and similarly, when an upper pressing plate 11 moves towards the upper side of the upper molding box 10, the scraper 17 at the outer side of the upper pressing plate 11 cleans sand particles inside the exhaust duct 16 inside the upper molding box 10, so that the exhaust duct 16 is kept smooth, the lower pressing plate 3 is arranged inside the lower molding box 4, and, the top of the lower molding box 4, the top of the extension plate 5 and the bottom of the push plate 9 are positioned on the same horizontal plane, the push plate 9 is convenient to push the sand mold to move rightwards through the top of the lower molding box 4 and the top of the extension plate 5, the central line of the lower molding box 4, the central line of the upper molding box 10 and the central line of the template 23 are positioned on the same vertical line, the template 23 on the upper side of the mounting plate 21 is convenient to be embedded into the bottom of the upper molding box 10, the template 23 on the lower side of the mounting plate 21 is embedded into the top of the lower molding box 4, and the top of the lower molding.

As shown in fig. 1, 2 and 7, a lifting platform 6 is provided at the right of an extension plate 5, the lifting platform 6 is connected with a first screw driving device 7, a multi-section hydraulic device 8 and a push plate 9 are provided at the left of a lower molding box 4, the push plate 9 is provided at the right side of the multi-section hydraulic device 8, an upper molding box 10 is provided above the lower molding box 4, an upper press plate 11 is provided above the upper molding box 10, the upper press plate 11 is connected with the lower end of a second hydraulic device 12, the second hydraulic device 12 is fixed at the top of a housing 1, the left side of the upper molding box 10 and the left side of the lower molding box 4 are connected with the inner wall of the housing 1 through a third hydraulic device 13, connecting members 14 are provided at the outer side of the upper molding box 10 and the outer side of the lower molding box 4, the connecting members 14 are provided in two sets, and each set of four connecting members 14 are provided, the upper molding box 10 and the lower molding box 4 slide more stably along the slide rod 15, the slide rod 15 penetrates through the connecting piece 14, the upper end and the lower end of the slide rod 15 are respectively connected with the inner wall of the shell 1, the exhaust grooves 16 are formed in the surface of the inner wall of the upper molding box 10 and the surface of the inner wall of the lower molding box 4, the outer side of the upper pressing plate 11 and the outer side of the lower pressing plate 3 are respectively rotatably connected with the scraping plate 17, the connecting parts of the scraping plates 17, the upper pressing plate 11 and the lower pressing plate 3 are respectively provided with a torsion spring 18, the middle part of the shell 1 is provided with a second lead screw driving device 19, the second lead screw driving device 19 is arranged between the lower molding box 4 and the upper molding box 10, the second lead screw driving device 19 penetrates through a dust collection plate 20 and a.

As shown in fig. 1, 4 and 5, templates 23 are mounted on the upper and lower sides of the mounting plate 21 through bolts 22, the mounting plate 21 is disposed between the lower molding box 4 and the upper molding box 10, the outer diameter of the templates 23 is the same as the outer diameter of the upper platen 11 and the outer diameter of the lower platen 3, the outer diameter of the upper platen 11 is the same as the inner diameter of the upper molding box 10 and the inner diameter of the lower molding box 4, so that the lower platen 3 slides along the inside of the lower molding box 4, the upper platen 11 slides along the inside of the upper molding box 10, a dust suction opening 24 is formed in the surface of the dust suction plate 20, the dust suction plate 20 is communicated with a dust suction barrel 25, the dust suction barrel 25 is disposed on the left side inside the casing 1, an opening 26 is formed in the rear side of the casing 1, and the opening 26 is formed above the upper molding box 10.

As shown in fig. 1 and 6, a sieving plate 27 and a supporting frame 28 penetrate through the opening 26, the supporting frame 28 is connected to the sieving plate 27 through a compression spring 29, the sieving plate 27 is disposed in an inclined manner, the height of the front end of the sieving plate 27 is lower than the height of the rear end of the sieving plate 27, a vibration motor 31 drives the sieving plate 27 to vibrate, under the action of gravity, sand particles slide forward along the sieving plate 27, the lowermost end of the supporting frame 28 is located above the lowermost end of the opening 26, and the uppermost end of the opening 26 is located above the uppermost end of the sieving plate 27, so that the sieving plate 27 and the supporting frame 28 move backward to be separated from the inside of the housing 1, a sieve hole 30 is formed in the lower surface of the sieving plate 27, the vibration motor 31 is disposed at the bottom of the sieving plate 27, the area of the sieve hole 30 is smaller than the area of the upper platen 11 or the area of the lower platen 3, and the sieve hole 30 is located directly above the upper platen, sand particles fall into the lower molding box 4 and the upper molding box 10 through the sieve holes 30, the rear side of the support frame 28 is fixedly connected with the support 32, the support 32 is arranged at the rear side of the shell 1, the bottom of the support 32 is provided with an electric sliding table 33, and the upper part of the rear end of the screening plate 27 is provided with a material conveying device 34.

The working principle is as follows: when the sand casting device capable of batch processing is used, firstly, an external power supply is switched on, the electric sliding table 33 is started, the electric sliding table 33 pushes the support 32 to move forwards until the support frame 28 and the screening plate 27 enter the shell 1 through the opening 26, the material conveying device 34 conveys sand grains to the screening plate 27, the vibration motor 31 is started, the vibration motor 31 drives the screening plate 27 to vibrate, the support frame 28 plays a role of supporting the screening plate 27, the compression spring 29 plays a role of avoiding rigid collision between the screening plate 27 and the support frame 28, the sand grains enter the upper molding box 10 and the lower molding box 4 through the sieve holes 30, the sieve holes 30 play a role of blocking plate-shaped sand grains, after filling is completed, the electric sliding table 33 drives the support 32 to move backwards until the screening plate 27 and the support frame 28 are separated from the shell 1, the two third hydraulic devices 13 respectively push the lower molding box 4 and the upper molding box 10 to slide towards the middle part of the shell 1 along the slide rods 15, the four-corner connecting piece 14 makes the upper molding box 10 and the lower molding box 4 slide more stably, at the same time, the first hydraulic device 2 pushes the lower press plate 3 to move upwards, the second hydraulic device 12 pushes the upper press plate 11 to move downwards until the template 23 at the lower side of the mounting plate 21 is embedded into the top of the lower molding box 4, the template 23 at the upper side of the mounting plate 21 is embedded into the bottom of the upper molding box 10, the first hydraulic device 2 continues to push the lower press plate 3 to move upwards, the lower press plate 3 and the template 23 at the lower side of the mounting plate 21 are matched to press sand grains, the air pressure in the lower molding box 4 is increased, the air presses the scraper 17 at the outer side of the lower press plate 3, so that a gap is generated between the scraper 17 at the outer side of the lower press plate 3 and the exhaust duct 16 at the inner side of the lower molding box 4, the redundant air in the lower molding box 4 is formed into molding sand at the lower half side, and similarly, the sand grains in the upper molding box 10 are formed into molding sand at the upper half side by reversely, meanwhile, the first hydraulic device 2 pulls the lower pressing plate 3 to move along with the lower molding box 4, the second hydraulic device 12 pulls the upper pressing plate 11 to move along with the upper molding box 10, so that the two templates 23 on the mounting plate 21 are separated from the molding sand, after the molding sand is shaped, the second lead screw driving device 19 is started, the second lead screw driving device 19 pushes the dust suction plate 20 and the mounting plate 21 to move rightwards until the dust suction plate 20 moves to the lower molding box 4 between the upper molding boxes 10, similarly, the upper end of the lower molding box 4 is attached to the lower end of the dust suction plate 20, the lower end of the upper molding box 10 is attached to the upper end of the dust suction plate 20, the dust suction barrel 25 comprises a filter screen, a waste barrel and a suction fan, the suction fan is started to draw air, the air enters the waste barrel through the dust suction opening 24, the filter screen plays a role of separating air and sand particles, and under the action of negative pressure, the air flow wraps the inner part of the lower molding box 4 and the movable, the cleaning of the movable sand is more efficient, after the cleaning of the movable sand is finished, the lower molding box 4 and the upper molding box 10 are reversely moved in the same way, so that the lower molding box 4 and the upper molding box 10 are separated from the dust suction plate 20, the second lead screw driving device 19 pulls the dust suction plate 20 and the mounting plate 21 to move leftwards until no shielding exists between the lower molding box 4 and the upper molding box 10, in the same way, the upper end of the lower molding box 4 is attached to the lower end of the upper molding box 10, meanwhile, the molding sand on the upper half side is spliced with the molding sand on the lower half side to form complete molding sand, the third hydraulic device 13 on the upper side pulls the upper molding box 10 to move upwards until the molding sand on the upper half side is separated from the upper molding box 10, at the moment, the air pressure in the upper molding box 10 is balanced with the external air pressure, the torsion spring 18 pushes one end, away from the scraper 17, of the upper pressing plate 11, to be attached to the inner wall of the exhaust groove 16 in the upper molding box 10, when the upper pressing plate 11 slides, the sand in the exhaust groove 16 in the upper molding box 10 is convenient to clean, the exhaust groove 16 in the upper molding box 10 keeps smooth, the third hydraulic device 13 on the lower side drives the lower molding box 4 to move downwards, meanwhile, the first hydraulic device 2 moves downwards along with the lower molding box 4 until the uppermost end of the lower molding box 4 and the lowermost end of the push plate 9 are positioned on the same horizontal plane, the first hydraulic device 2 pushes the molding sand to move upwards through the lower press plate 3 until the molding sand on the lower half side is separated from the lower molding box 4, similarly, the scraper 17 on the outer side of the lower press plate 3 cleans the sand in the exhaust groove 16 in the lower molding box 4, the exhaust groove 16 in the lower molding box 4 keeps smooth, when unloading is carried out, the multi-section hydraulic devices 8 push the push plate 9 to move rightwards, the push plate 9 pushes the complete molding sand to move to the lifting platform 6 through the extension plate 5, the first lead screw driving device 7 is started, the first lead screw driving device 7 pushes the lifting platform 6 to move downwards, the height of the molding sand is reduced, the molding sand is convenient to carry through tools such as a manual forklift, the templates 23 need to be replaced, the bolts 22 are rotated, and the templates 23 on the upper side and the lower side of the mounting plate 21 are taken down to be replaced, so that all the work is completed.

The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the invention.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A sand casting equipment that can process in batches, includes casing (1), its characterized in that: the hydraulic press is characterized in that a first hydraulic device (2) is arranged on the lower side inside the shell (1), a lower pressing plate (3) is arranged at the top of the first hydraulic device (2), the lower pressing plate (3) is arranged inside a lower molding box (4), an extension plate (5) is arranged on the right side of the lower molding box (4), a lifting table (6) is arranged on the right side of the extension plate (5), the lifting table (6) is connected with a first lead screw driving device (7), a multi-section hydraulic device (8) and a push plate (9) are arranged on the left side of the lower molding box (4), the push plate (9) is arranged on the right side of the multi-section hydraulic device (8), an upper molding box (10) is arranged above the lower molding box (4), an upper pressing plate (11) is arranged above the upper molding box (10), the upper pressing plate (11) is connected with the lower end of a second hydraulic device (12), and the second hydraulic device (12), the left side of the upper molding box (10) and the left side of the lower molding box (4) are connected with the inner wall of the shell (1) through third hydraulic devices (13), connecting pieces (14) are arranged on the outer side of the upper molding box (10) and the outer side of the lower molding box (4), a sliding rod (15) penetrates through each connecting piece (14), the upper end and the lower end of each sliding rod (15) are respectively connected with the inner wall of the shell (1), exhaust grooves (16) are formed in the inner wall surface of the upper molding box (10) and the inner wall surface of the lower molding box (4), scrapers (17) are rotatably connected to the outer side of the upper pressing plate (11) and the outer side of the lower pressing plate (3), torsion springs (18) are arranged at the joints of the scrapers (17), the upper pressing plate (11) and the lower pressing plate (3), a second lead screw driving device (19) is arranged in the middle of the shell (1), and the second lead screw driving device (19) is arranged between the lower molding box, and a dust collection plate (20) and a mounting plate (21) penetrate through the second screw driving device (19), the mounting plate (21) is arranged on the right side of the dust collection plate (20), templates (23) are arranged on the upper side and the lower side of the mounting plate (21) through bolts (22), the mounting plate (21) is arranged between the lower molding box (4) and the upper molding box (10), a dust collection opening (24) is formed in the surface of the dust collection plate (20), the dust collection plate (20) is communicated with a dust collection barrel (25), the dust collection barrel (25) is arranged on the left side inside the shell (1), an opening (26) is formed in the rear side of the shell (1), the opening (26) is formed above the upper molding box (10) and above the lower molding box (4), a screening plate (27) and a supporting frame (28) penetrate through the inside of the opening (26), and the supporting frame (28) is connected with the screening plate (27) through a compression spring (29), sieve mesh (30) have been seted up to screening board (27) lower surface, and screening board (27) bottom is provided with vibrating motor (31), carriage (28) rear side and support (32) fixed connection, and support (32) set up at casing (1) rear side, support (32) bottom is provided with electronic slip table (33), screening board (27) rear end top is provided with feeding device (34).

2. A sand casting apparatus capable of batch processing according to claim 1, wherein: one side, far away from the lower pressing plate (3), of the scraper (17) on the outer side of the lower pressing plate (3) is arranged inside an exhaust groove (16) in the lower molding box (4), and the scraper (17) on the outer side of the lower pressing plate (3) is connected with the exhaust groove (16) in the lower molding box (4) in a sliding mode.

3. A sand casting apparatus capable of batch processing according to claim 1, wherein: the uppermost end of the lower molding box (4), the uppermost end of the extension plate (5) and the lowermost end of the push plate (9) are positioned on the same horizontal plane.

4. A sand casting apparatus capable of batch processing according to claim 1, wherein: the central line of the lower molding box (4), the central line of the upper molding box (10) and the central line of the template (23) are positioned on the same vertical straight line.

5. A sand casting apparatus capable of batch processing according to claim 1, wherein: the connecting pieces (14) are arranged in two groups, four connecting pieces (14) are arranged in each group, and meanwhile the two groups of connecting pieces (14) are respectively arranged at four corners of the outer side of the upper molding box (10) and four corners of the outer side of the lower molding box (4).

6. A sand casting apparatus capable of batch processing according to claim 1, wherein: the outer diameter of the template (23) is the same as the outer diameter of the upper pressing plate (11) and the outer diameter of the lower pressing plate (3), and the outer diameter of the upper pressing plate (11) is the same as the inner diameter of the upper molding box (10) and the inner diameter of the lower molding box (4).

7. A sand casting apparatus capable of batch processing according to claim 1, wherein: the screening plate (27) is arranged in an inclined manner, and the height of the front end of the screening plate (27) is lower than that of the rear end of the screening plate (27).

8. A sand casting apparatus capable of batch processing according to claim 1, wherein: the lowermost end of the support frame (28) is located above the lowermost end of the opening (26), and the uppermost end of the opening (26) is located above the uppermost end of the screening plate (27).

9. A sand casting apparatus capable of batch processing according to claim 1, wherein: the area of the sieve holes (30) is smaller than that of the upper pressing plate (11) or that of the lower pressing plate (3), and the sieve holes (30) are located right above the upper pressing plate (11) and right above the lower pressing plate (3).