Up-down sand shooting molding machine and molding box hydraulic control system thereof
阅读说明:本技术 上下射砂造型机及其造型箱液压控制系统 (Up-down sand shooting molding machine and molding box hydraulic control system thereof ) 是由 张建诗 于 2020-07-03 设计创作,主要内容包括:本发明提供了一种上下射砂造型机,包括:机架,其设有导向杆;上砂库,其底部设有上射砂口,上射砂口处设有第一压实板,第一压实板设有贯通孔,上砂库通过升降装置与机架连接;造型上箱,其与导向杆可滑动地相连接,造型上箱通过上箱油缸与上砂库连接;下砂库,其与机架连接,下砂库设有朝上的下射砂口,下射砂口处设有第二压实板,第二压实板设有贯通孔;造型下箱,其与导向杆可滑动地相连接,造型下箱通过下箱油缸与机架连接。如此设置,结构更简单,故障率更低;没有角度转换时的速度损失,黏土砂的射出速度更快,射砂速率更高,能够从上下两个方向向造型室内射砂,使上下射砂装置的射砂效率更高。(The invention provides an up-and-down sand shooting molding machine, which comprises: a frame provided with a guide rod; the bottom of the sand feeding warehouse is provided with an upper sand shooting port, the upper sand shooting port is provided with a first compaction plate, the first compaction plate is provided with a through hole, and the sand feeding warehouse is connected with the rack through a lifting device; the modeling upper box is connected with the guide rod in a sliding manner and is connected with the sand feeding warehouse through an upper box oil cylinder; the lower sand warehouse is connected with the rack and provided with a lower sand shooting port facing upwards, a second compaction plate is arranged at the lower sand shooting port and provided with a through hole; and the modeling lower box is connected with the guide rod in a sliding manner and is connected with the rack through a lower box oil cylinder. By the arrangement, the structure is simpler, and the failure rate is lower; the sand shooting device has the advantages that the sand shooting device is free of speed loss during angle conversion, the clay sand shooting speed is higher, the sand shooting speed is higher, sand can be shot into the molding chamber from the upper direction and the lower direction, and the sand shooting efficiency of the upper sand shooting device and the lower sand shooting device is higher.)
1. An up-and-down shooting sand molding machine, comprising:
a frame (14) provided with a guide rod (11) vertically arranged;
the sand feeding warehouse (9) is internally used for containing clay sand, an upper sand shooting port for jetting the clay sand is formed in the bottom of the sand feeding warehouse, a first compaction plate (2) is arranged at the upper sand shooting port, a through hole for the clay sand to pass through is formed in the first compaction plate (2), the sand feeding warehouse (9) is connected with the rack (14) through a lifting device, and the lifting device is used for driving the sand feeding warehouse (9) to move up and down;
the modeling upper box (3) is connected with the guide rod (11) in a sliding mode, the modeling upper box (3) is connected with the upper sand warehouse (9) through an upper box oil cylinder (1) and is positioned below the upper sand warehouse (9), and the cross section of the first compacting plate (2) is smaller than or equal to the upper box opening of the modeling upper box (3), so that the first compacting plate (2) can extend into the modeling upper box (3) from the upper portion;
the lower sand warehouse (12) is connected with the rack (14), the lower sand warehouse (12) is used for containing clay sand and provided with a lower sand shooting port which is arranged upwards and opposite to the upper sand shooting port, the lower sand shooting port is provided with a second compacting plate (5), and the second compacting plate (5) is provided with a through hole for the clay sand to pass through;
the modeling lower box (4) is connected with the guide rod (11) in a sliding mode and is arranged opposite to the modeling upper box (3), the modeling lower box (4) is connected with the rack (14) through a lower box oil cylinder (6), and the cross section of the second compacting plate (5) is smaller than or equal to that of the lower box opening of the modeling lower box (4), so that the second compacting plate (5) can stretch into the modeling lower box (4) from the lower part.
2. An up-and-down shooting molding machine according to claim 1, characterized in that the lifting device comprises a vertically arranged rail mechanism by which the sand magazine (9) is slidably connected with the frame (14), and a linear drive device for driving the sand magazine (9) to displace up and down.
3. The sand shooting and molding machine as claimed in claim 2, wherein the guide rail mechanism comprises a fixed seat (10), a plurality of guide sleeves (13) and a plurality of guide columns (8), each guide sleeve (13) is vertically arranged and fixedly connected with the frame (14), the guide columns (8) correspondingly extend into the guide sleeves (13), the fixed seat (10) is fixedly connected with each guide column (8), and the sand feeding reservoir (9) is fixed on the fixed seat (10) through a fastening member.
4. An up-and-down shooting and moulding machine according to claim 3, characterized in that the linear drive is a squeeze cylinder (7), the body of the squeeze cylinder (7) is connected with the frame (14), and the piston rod of the squeeze cylinder (7) is connected with the fixed base (10).
5. An up-and-down shooting molding machine according to claim 1, characterized in that the top of the upper sand silo (9) and the top of the lower sand silo (12) are provided with sand inlets, and each sand inlet is provided with an opening and closing valve for opening and closing the sand inlet.
6. An up-and-down shooting and moulding machine according to claim 5, characterised in that the on-off valve is a dome valve (15).
7. Upper and lower shooting molding machine according to claim 1, characterized in that level sensors (16) for detecting the clay sand level are provided in both the upper sand magazine (9) and the lower sand magazine (12).
8. Upper and lower shooting molding machine according to claim 1, characterized in that the upper sand magazine (9) and the lower sand magazine (12) are each provided with an exhaust valve (17) for exhausting internally entrapped compressed air.
9. An up-and-down shooting and moulding machine according to claim 8, characterised in that the outlet of the air outlet valve (17) communicates with a silencer.
10. The hydraulic molding box control system according to any one of claims 1 to 9, comprising an oil supply path (24), an oil return path (25), an upper box loop and a lower box loop, wherein the upper box loop comprises the upper box cylinder (1), an upper box three-position four-way solenoid valve (19) and an upper box solenoid switch valve (21), a rod chamber and a rodless chamber of the upper box cylinder (1) are connected to the oil supply path (24) and the oil return path (25) respectively through the upper box three-position four-way solenoid valve (19), a rodless chamber of the upper box cylinder (1) is further connected to the oil return path (25) through the upper box solenoid switch valve (21), the lower box loop comprises the lower box cylinder (6), a lower box three-position four-way solenoid valve (20) and a lower box solenoid switch valve (22), and a rod chamber and a rodless chamber of the lower box cylinder (6) are connected to the oil supply path (25) respectively through the lower box three-position four-way solenoid valve (20) The oil path (24) is connected with the oil return path (25), and the rodless cavity of the lower box oil cylinder (6) is also connected with the oil return path (25) through the lower box electromagnetic switch valve (22).
Technical Field
The invention relates to the technical field of casting, in particular to an upper and lower sand shooting molding machine and a molding box hydraulic control system thereof.
Background
In the modern casting production process, in order to improve the casting efficiency and meet the requirements of the modern production, most of sand molds used in the casting process are manufactured by using a horizontal flaskless molding machine, and the horizontal flaskless molding machine is widely applied to the casting machinery industry. The horizontal flaskless molding machine among the prior art mainly includes the sand storehouse that is used for depositing clay sand and the sand shooting mechanism who communicates with the sand storehouse, and the sand storehouse sets up in one side of sand shooting mechanism usually, and clay sand changes the flow direction into the vertical direction through a 90 degrees corner in the sand storehouse the inside of edgewise and just can enter into sand shooting mechanism, and the sand shooting speed that can cause because conversion angle slows down in the sand shooting mechanism is entered into to the sand storehouse of one side to clay sand, leads to shooting efficiency to reduce. And because the sand shooting mechanism needs to move downwards to compact the sand mould, and the sand storehouse is usually fixedly arranged, the sand shooting mechanism needs to be movably and hermetically connected with the sand storehouse, and a sealing structure at the joint between the sand shooting mechanism and the sand storehouse is worn after being used for a period of time, so that the problems of air leakage and sand leakage are caused. Therefore, a need exists in the art for a sand shooting mechanism that solves the problems of low sand shooting efficiency and air leakage and sand leakage caused by abrasion of a sealing structure between the sand shooting mechanism and a sand reservoir in the prior art.
Disclosure of Invention
The invention aims to solve the technical problem of providing an up-and-down sand shooting device which has high sand shooting efficiency and can not cause the problems of air leakage and sand leakage due to untight sealing.
To solve the above problems, the present invention provides an up-and-down sand shooting molding machine comprising: the rack is provided with a guide rod which is vertically arranged; the sand loading warehouse is internally used for containing clay sand, the bottom of the sand loading warehouse is provided with an upper sand shooting port for shooting the clay sand, the upper sand shooting port is provided with a first compacting plate, the first compacting plate is provided with a through hole for the clay sand to pass through, the sand loading warehouse is connected with the rack through a lifting device, and the lifting device is used for driving the sand loading warehouse to move up and down; the modeling upper box is connected with the guide rod in a sliding mode, is connected with the upper sand box through an upper box oil cylinder and is positioned below the upper sand box, and the cross section of the first compaction plate is smaller than or equal to the upper box opening of the modeling upper box, so that the first compaction plate can extend into the modeling upper box from the upper part; the lower sand warehouse is connected with the rack, is used for containing clay sand and is provided with a lower sand shooting port which is arranged upwards and opposite to the upper sand shooting port, a second compaction plate is arranged at the lower sand shooting port, and the second compaction plate is provided with a through hole for the clay sand to pass through; the modeling lower box is connected with the guide rod in a sliding mode and is arranged opposite to the modeling upper box, the modeling lower box is connected with the rack through a lower box oil cylinder, and the cross section of the second compacting plate is smaller than or equal to the lower box opening of the modeling lower box, so that the second compacting plate can extend into the modeling lower box from the lower part.
Preferably, the lifting device comprises a vertically arranged guide rail mechanism and a linear driving device, the sand feeding warehouse is slidably connected with the rack through the guide rail mechanism, and the linear driving device is used for driving the sand feeding warehouse to move up and down.
Preferably, the guide rail mechanism comprises a fixed seat, a plurality of guide sleeves and a plurality of guide pillars, the guide sleeves are vertically arranged and fixedly connected with the rack, the guide pillars correspondingly extend into the guide sleeves one by one, the fixed seat is fixedly connected with the guide pillars, and the sanding warehouse is fixed on the fixed seat through a fastener.
Preferably, the linear driving device is a compaction oil cylinder, a cylinder body of the compaction oil cylinder is connected with the rack, and a piston rod of the compaction oil cylinder is connected with the fixed seat.
Preferably, the top of the upper sand silo and the top of the lower sand silo are both provided with sand inlets, and each sand inlet is provided with an opening and closing valve for opening and closing the sand inlet.
Preferably, the opening and closing valve is a dome valve.
Preferably, a material level sensor for detecting the height of the clay sand is arranged in each of the upper sand warehouse and the lower sand warehouse.
Preferably, the upper sand silo and the lower sand silo are both provided with exhaust valves for exhausting internally retained compressed air.
Preferably, the air outlet of the exhaust valve is communicated with a silencer.
Embodiments of the present invention also provide a molding box hydraulic control system of the upper and lower sand shooting molding machine as described above.
In the technical scheme provided by the invention, the upper and lower sand shooting molding machine comprises: the rack is provided with a guide rod which is vertically arranged; the sand loading warehouse is internally used for containing clay sand, the bottom of the sand loading warehouse is provided with an upper sand shooting port for injecting the clay sand, the upper sand shooting port is provided with a first compacting plate, the first compacting plate is provided with a through hole for the clay sand to pass through, the sand loading warehouse is connected with the rack through a lifting device, and the lifting device is used for driving the sand loading warehouse to move up and down; the modeling upper box is connected with the guide rod in a sliding manner, is connected with the upper sand warehouse through an upper box oil cylinder and is positioned below the upper sand warehouse, and the cross section of the first compaction plate is less than or equal to the upper box opening of the modeling upper box, so that the first compaction plate can extend into the modeling upper box from the upper part; the lower sand warehouse is connected with the rack, the lower sand warehouse is used for containing clay sand and is provided with a lower sand shooting port which is arranged upwards and opposite to the upper sand shooting port, a second compaction plate is arranged at the lower sand shooting port, and the second compaction plate is provided with a through hole for the clay sand to pass through; and the modeling lower box is connected with the guide rod in a sliding manner and is arranged opposite to the modeling upper box, the modeling lower box is connected with the rack through a lower box oil cylinder, and the cross section of the second compaction plate is smaller than or equal to the lower box opening of the modeling lower box, so that the second compaction plate can extend into the modeling lower box from the lower part.
When sand shooting is carried out, clay sand is added into the upper sand warehouse and the lower sand warehouse respectively. The upper box oil cylinder drives the modeling upper box to move downwards, the lower box oil cylinder drives the modeling lower box to move upwards, the modeling upper box and the lower box are attached, a modeling chamber is formed inside the modeling upper box and the modeling lower box, the mold is arranged in the modeling chamber, and then compressed air is introduced into the upper sand warehouse and the lower sand warehouse respectively through communicating pipes by an air source. Under the action of compressed air, clay sand in the upper sand warehouse enters the molding chamber from an upper box opening at the top of the upper molding box, clay sand in the lower sand warehouse enters the molding chamber from a lower box opening at the bottom of the lower molding box, and the mold is uniformly covered by the clay sand. After the molding chamber is filled with clay sand, the introduction of compressed air is stopped, the lifting device drives the upper sand warehouse to move downwards, the first compaction plate at the upper sand shooting port at the upper sand warehouse is pressed into the upper molding box, the second compaction plate at the lower sand shooting port at the lower sand warehouse is pressed into the lower molding box, the upper box oil cylinder and the lower box oil cylinder respectively retract in the compaction process, so that the clay sand in the upper molding box and the clay sand in the lower molding box are compacted respectively, the lifting device drives the upper sand warehouse to ascend, the template retracts to the initial position, the lifting device drives the upper sand warehouse to move downwards, and after the upper sand mold and the lower sand mold are contacted, the upper box oil cylinder and the lower box oil cylinder respectively retract, and the compacted sand mold is pushed out by the sand pushing mechanism for casting.
According to the arrangement, the upper sand shooting device and the lower sand shooting device are not provided with the side fixed sand warehouse, the upper sand warehouse does not need to be in sliding seal with the side fixed sand warehouse, the problem of air leakage and sand leakage caused by poor seal is avoided, the side fixed sand warehouse and the corresponding sliding seal assembly are removed, the structure of the upper sand shooting device and the lower sand shooting device is simpler, and the failure rate is lower; compared with the prior art that the clay sand is injected vertically downwards after being converted at an angle of 90 degrees from the sand warehouse on the side surface, the clay sand in the upper sand warehouse and the lower sand warehouse in the sand injecting device disclosed by the invention is directly injected vertically downwards, the speed loss during angle conversion is avoided, the clay sand injection speed is higher, the sand filling effect in the molding chamber is better, and the sand injecting device can adapt to more molds of different types; compared with a horizontal boxless molding machine in the prior art, the upper and lower sand shooting molding machine provided by the invention also comprises a lower sand warehouse which can shoot sand from the bottom of the molding chamber, so that the upper and lower sand shooting devices can shoot sand into the molding chamber from the upper and lower directions, on one hand, the sand shooting efficiency of the upper and lower sand shooting devices is higher, and on the other hand, the sand shooting effect is better under the condition that some molds are larger, especially the molds cover the cross section of the whole molding chamber. By the arrangement, the problems that shadow is generated in the moulding chamber due to side sand shooting and the whole moulding chamber cannot be filled with the clay sand due to pressure loss when the clay sand is rotated to the vertical direction from the side surface can be solved; penetrate sand device from top to bottom and can also carry out the compaction with the indoor clay sand of molding after penetrating the sand and accomplish, collect and penetrate sand and compaction in an organic whole, realized a tractor serves several purposes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an embodiment of an upper and lower sand shooting molding machine according to the present invention;
FIG. 2 is a schematic illustration of a sand loading bay of the top and bottom shooting sand molding machine of FIG. 1;
FIG. 3 is a hydraulic control system for a molding box of an up-and-down sand shooting molding machine according to an embodiment of the present invention.
In fig. 1-3:
1. an upper tank oil cylinder; 2. a first compacting plate; 3. modeling and putting the box; 4. modeling and discharging the box; 5. a second compacting plate; 6. a lower tank oil cylinder; 7. compacting the oil cylinder; 8. a guide post; 9. a sand feeding warehouse; 10. a fixed seat; 11. a guide bar; 12. a sand discharging warehouse; 13. a guide sleeve; 14. a frame; 15. a dome valve; 16. a level sensor; 17. an exhaust valve; 18. a sand shooting valve; 19. an upper box three-position four-way electromagnetic valve; 20. a lower box three-position four-way electromagnetic valve; 21. an upper tank electromagnetic switch valve; 22. a lower tank electromagnetic switch valve; 23. a balancing valve; 24. an oil supply path; 25. and an oil return path.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the invention recited in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
Referring to fig. 1 to 3, an up-and-down sand shooting and molding machine according to an embodiment of the present invention includes a
When sand shooting is carried out, clay sand is added into the upper sand warehouse 9 and the
According to the arrangement, the upper sand shooting device and the lower sand shooting device are not provided with the side fixed sand warehouse, the upper sand warehouse 9 does not need to be in sliding seal with the side fixed sand warehouse, the problem of air leakage and sand leakage caused by poor seal is avoided, the side fixed sand warehouse and the corresponding sliding seal assembly are removed, the structure of the upper sand shooting device and the lower sand shooting device is simpler, and the failure rate is lower; compared with the prior art that the clay sand is injected vertically downwards after being converted at an angle of 90 degrees from the sand storehouses on the side surfaces, the clay sand in the upper sand storehouse 9 in the upper sand shooting device and the lower sand shooting device is directly injected vertically downwards, the speed loss during angle conversion is avoided, the clay sand injection speed is higher, the sand shooting speed is higher, the sand filling effect in the molding chamber is better, and the sand filling device can adapt to more molds of different types; compared with the horizontal boxless molding machine in the prior art, the upper and lower sand shooting molding machine provided by the invention also comprises a lower sand warehouse 12 which can shoot sand from the bottom of the molding chamber, so that the upper and lower sand shooting devices can shoot sand into the molding chamber from the upper and lower directions, on one hand, the sand shooting efficiency of the upper and lower sand shooting devices is higher, and on the other hand, the sand shooting effect is better under the condition that some molds are larger, especially the molds cover the cross section of the whole molding chamber. By the arrangement, the problems that shadow is generated in the moulding chamber due to side sand shooting and the whole moulding chamber cannot be filled with the clay sand due to pressure loss when the clay sand is rotated to the vertical direction from the side surface can be solved; penetrate sand device from top to bottom and can also carry out the compaction with the indoor clay sand of molding after penetrating the sand and accomplish, collect and penetrate sand and compaction in an organic whole, realized a tractor serves several purposes.
Referring to fig. 2, in some embodiments, the lifting device includes a vertically disposed rail mechanism, through which the sand feeding reservoir 9 is slidably connected to the
Referring to fig. 2, in some embodiments, the top of the upper sand silo 9 and the top of the
In some embodiments, both the cope reservoir 9 and the
In some embodiments, level sensors 16 for detecting the height of the clay sand are disposed in the upper sand reservoir 9 and the
Referring to fig. 3, an embodiment of the present invention further provides a hydraulic control system for a molding box of an upper and lower sand shooting molding machine, where the upper and lower sand shooting molding machine is the upper and lower sand shooting molding machine according to any of the above embodiments. The molding box hydraulic control system of the upper and lower sand shooting molding machine comprises an oil supply path 24, an oil return path 25, an upper box loop and a lower box loop. The oil supply path 24 is mainly connected to a power element, such as a hydraulic pump, to supply power to the entire control system. The oil return path 25 is communicated with the oil tank, so that the hydraulic oil which flows back in the whole hydraulic system enters the oil tank through the oil return path 25. The upper box loop comprises an upper box oil cylinder 1, an upper box three-position four-way electromagnetic valve 19 and an upper box
Alternatively, the upper tank three-position four-way solenoid valve 19 and the lower tank three-position four-way solenoid valve 20 are both normally closed solenoid valves, and as shown in fig. 3, the upper tank cylinder 1 and the
Alternatively, the upper tank electromagnetic opening/closing
Optionally, a
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.