CN211564443U

CN211564443U - Full-automatic cold box core shooter

Info

Publication number: CN211564443U
Application number: CN201921590268.XU
Authority: CN
Inventors: 付鹏飞
Original assignee: Suzhou Suzhu Foundry Machinery Manufacture Co Ltd
Current assignee: Suzhou Suzhu Foundry Machinery Manufacture Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-09-25
Anticipated expiration: 2029-09-24

Abstract

The utility model provides a full-automatic cold core box core shooter, which pushes down the core through an upper shooting head, adopts an upper pressure oil cylinder to drive a passive lifting structure thereof, so that the control becomes simpler, and the movement becomes high-efficient; the sand shooting adopts a unique vacuum negative pressure sand shooting system, can realize that the sand shooting is finished under the non-supercharging state of the hydraulic system, thereby reducing the impact of frequently used high-pressure oil on the hydraulic system and ensuring the compactness and the precision of the sand core. The tooling die comprises a movable workbench, wherein a tooling die is clamped on the upper surface of the movable workbench, the bottom of the movable workbench is supported on a first linear rail, the movable workbench moves along the front-back direction of the first linear rail, a lower ejection core mechanism is arranged at the bottom of the front end of the first linear rail and comprises an ejection core rod which is vertically driven, a three-dimensional rack structure is arranged in the direction of the rear end area of the first linear rail, and the rack structure comprises a base which is positioned at the rear lower part of the first linear rail.

Description

Full-automatic cold box core shooter

Technical Field

The utility model relates to a technical field of core shooter structure specifically is full-automatic cold core box core shooter.

Background

At present, the cold core box core making machine mainly has two mechanism forms, one is a lower jacking type, a workbench drives a mould to lift, and the other is an upper pressing type, no movement is caused in the direction vertical to the mould by the workbench, and a shooting head, an air blowing frame and an upper pressing head move up and down to press the mould.

The jacking hydraulic cylinders of the lower jacking type equipment workbench are used in pairs and have large load and high guiding requirement, the weight of a die has influence on the equipment, the jacking hydraulic cylinders of the lower jacking type equipment workbench are large and used in pairs, the lifting guiding requirement of the workbench is high, and if the speeds of the cylinders are not synchronous, the guide rods are easy to wear and are not changed in maintenance; the weight of the mould is required; the shooting head mechanism and the blowing core-pushing mechanism of the upper-pressing type equipment are both provided with paired lifting hydraulic cylinders, the synchronization requirement is high, and meanwhile, the beat is influenced (about 2S). The pipeline and the switch signal are more, and the manufacturing cost is high; and the tail gas treatment and exhaust of the two devices are mostly in the enclosure, the number of exhaust points on the machine is small, and the amine smell around the devices is heavy.

Disclosure of Invention

In order to solve the problems, the utility model provides a full-automatic cold core box core shooter, which uses an upper pressure oil cylinder to drive a passive lifting structure of the upper pressure oil cylinder by pressing down the upper shooting head to shoot the core, so that the control becomes simpler and the movement becomes high-efficient; the sand shooting adopts a unique vacuum negative pressure sand shooting system, can realize that the sand shooting is finished under the non-supercharging state of the hydraulic system, thereby reducing the impact of frequently used high-pressure oil on the hydraulic system and ensuring the compactness and the precision of the sand core.

Full-automatic cold box core shooter, its characterized in that: the tooling die comprises a movable workbench, a tooling die is clamped on the upper surface of the movable workbench, the bottom of the movable workbench is supported on a first linear track, the movable workbench moves along the front-back direction of the first linear track, a lower core jacking mechanism is arranged at the bottom of the front end of the first linear track, the lower core jacking mechanism comprises a core jacking rod which is vertically driven, a three-dimensional rack structure is arranged in the direction of the rear end area of the first linear track, the rack structure comprises a base which is positioned at the rear lower part of the first linear track, a group of upright posts are respectively arranged on two sides of the base corresponding to the first linear track, an upper beam assembly and a lower beam assembly are arranged in the height direction of the upright posts, the upper beam assembly and the lower beam assembly are arranged perpendicular to the first linear track, and connecting plates are respectively arranged on two sides of the base corresponding to the first linear track, the bottom of each clamping mechanism is fixedly arranged on a corresponding connecting plate respectively, the two clamping mechanisms are combined to form a mold clamping device, the clamping parts of the two clamping mechanisms are arranged in opposite directions and driven by respective clamping cylinders, one end of the upper beam assembly in the length direction is fixedly provided with a sand adding device, a lifting and mold opening mechanism is fixedly arranged at a position of the upper beam assembly in the length direction corresponding to the first linear track, the lifting and mold opening mechanism comprises a lifting cylinder, a lifting frame and a connecting frame, the connecting frame is fixedly connected to a corresponding area of the upper beam assembly and the upper part of the lifting frame, driving inserting blocks are arranged at four corners of the bottom of the lifting frame respectively, an upper pressing sand shooting mechanism is arranged at a position of the upper beam assembly in the length direction corresponding to the first linear track, and an upper pressing cylinder is fixedly connected to the upper beam assembly through a connecting piece, the upper compaction oil cylinder is connected with a pressure head below through a guide piece, lifting guide rails which are lifted synchronously are further arranged at two ends of the pressure head, the pressure head is used for butting a joint of a movable shooting head, an air storage tank is externally connected with the pressure head, a second linear rail and a third linear rail are arranged on the upper surface of the lower cross beam assembly along the length direction and are arranged at intervals, and the interval between the third linear rail and the third linear rail corresponds to the length area of the lifting guide rails; the upper core ejecting and blowing mechanism is formed by combining a blowing mechanism and an upper core ejecting mechanism into a whole, the upper core ejecting and blowing mechanism and a movable shooting head are respectively and fixedly arranged at two sides of a fixed frame to form an integral connection structure, a guide wheel is correspondingly arranged at the upper area of the movable shooting head, the guide wheel is correspondingly arranged at the upper area of the upper core ejecting and blowing mechanism, a servo motor is arranged between two beams in the width direction of the fixed frame, a driving gear is respectively arranged on an output shaft of the servo motor, a meshing rack is arranged at the position, corresponding to the driving gear, of the lower surface of a lower beam assembly, and the driving gear is meshed and connected with the meshing rack; a turnover sand cleaning mechanism is fixedly arranged at the lower part of the lower cross beam assembly corresponding to the position right below the sand adding device; the lower core ejecting mechanism is arranged at the front end of the rack structure.

It is further characterized in that:

the system also comprises a safety surrounding screen, a cantilever operation screen, an electric control cabinet and a hydraulic system which are arranged at the periphery of the host;

the sand adding device comprises a sand adding hopper, the sand adding hopper is connected with a vibrating motor, a sand adding butterfly valve and a far infrared ray tester are respectively arranged at the bottom outlet of the sand adding hopper, a movable shooting head moves below the sand adding hopper, the sand adding butterfly valve below the sand adding hopper is opened to add sand through the control valve action of the sand adding butterfly valve, after the sand is accumulated to a certain height in a sand storage cylinder, the far infrared ray tester arranged at a sand adding opening sends a message, the control valve of the sand adding butterfly valve is closed, the sand adding is finished, and if necessary, the vibrating motor above the sand hopper can be opened to accelerate the sand adding;

the upper part of the pressure head is connected with the driving end of the upper compaction oil cylinder, the bottom of the guide rod is connected with the pressure head, the upper part of the guide rod penetrates through the corresponding guide hole of the upper crossbeam assembly, the two sides of the pressure head are provided with corresponding exhaust valves, and the exhaust valves are provided with silencers to reduce exhaust noise; the exhaust valve is controlled to be opened and closed through an electromagnetic air valve, the bottom of the pressure head is provided with a blowing port of a sand shooting mechanism with a hole plate and a filter screen plate, the pressure head connects a blowing chamber with an external air storage tank through an air guide rod and an angle valve, and the pressure head controls sand shooting through two large-caliber angle valves; two ends of the pressure head are respectively provided with a lifting guide rail, and the two lifting guide rails are synchronously lifted and can be synchronously driven by an air cylinder and are responsible for lifting the movable jet head and the blowing frame;

when the sand is shot, the pressure head is pressed down to tightly press the movable shooting head and the upper core box, airflow instantly enters a shooting cavity of the movable shooting head through the air blowing port to finish the sand shooting action, the upper part is used for exhausting, so that the cleaning is convenient, the exhausting effect is improved, a pressure regulating valve is arranged on a pipeline before the air enters the air storage tank, and the sand shooting pressure is regulated to 0.4-0.5MPa according to the process requirement;

the lifting mold opening mechanism specifically comprises a lifting frame consisting of two groups of lifting oil cylinders and four guide rods which are respectively arranged at two sides, and the top ends of the four guide rods form an integral structure through a connecting frame; the lifting mold opening mechanism is provided with four driving insertion blocks driven by cylinders, the driving insertion blocks are used for lifting an upper core box to complete the actions of mold opening and mold closing, automatic floating sand blowing and parting liquid spraying mechanisms are arranged on a front lifting frame consisting of two guide rods at the front part of the bottoms of the four corners, the automation and the use convenience of equipment are improved, and when a mold is assembled and disassembled, a bottom lifting frame used for connecting two bottom feet on the same side must be located at the highest position above the lifting frame;

the connection of the pressure head and the bottom shooting plate adopts a two-oil-cylinder locking quick-change device, the connection of the blowing frame and the upper core box adopts a two-oil-cylinder locking quick-change device, and the locking working condition can be monitored and observed through a computer;

the guide wheels are V-shaped wheels, and the lifting guide rail, the second linear guide rail and the third linear guide rail are all concave V-shaped guide rails, so that sand accumulation of the walking rails is avoided;

the turnover sand cleaning mechanism comprises a first driving oil cylinder, a sand cleaning lifting air cylinder, a sand cleaning frame, a shooting plate positioning block and a turnover frame, wherein the first driving oil cylinders positioned on two sides are fixedly arranged at corresponding positions of the upper cross beam assembly respectively;

the lower core ejecting mechanism comprises a core ejecting rod, a core ejecting synchronous frame and a core ejecting oil cylinder, the lower core ejecting mechanism is arranged below the workbench at a moving-out position, the lower core ejecting oil cylinder acts, the core ejecting mechanism ejects the sand core out of the lower core box, and a robot or manual coring is carried out;

the movable working table is provided with four positioning pins to realize accurate positioning of the die, and also comprises two die quick-change locking oil cylinders, a working table oil cylinder and a working table base, wherein the working table base is supported on the first linear rail through a guide rail pair structure, the output end of the working table oil cylinder is connected with the working table base, and the working table oil cylinder is driven by adopting a hydraulic proportional valve technology to realize the requirements of stable transition of slow → fast → slow movement;

each clamping mechanism consists of an oil cylinder and a guide frame, a quick-change locking mechanism is arranged between the template and the mold to be clamped, a workbench air exhaust mechanism is arranged on a sliding seat of each clamping mechanism, and the sliding seat is fixedly connected with the connecting plate.

After the technical scheme is adopted, an upper shooting head is used for pressing down a shooting core during sand shooting, and a mold is placed on a lower movable workbench; the workbench is driven by an oil cylinder proportional valve, the jet head and the upper ejection core amine blowing mechanism are integrated, in order to avoid sand accumulation on a walking track, the moving mechanism adopts a V-shaped wheel and a V-shaped guide rail to form an upper moving mechanism, and the upper moving drive is driven by a high-efficiency stable servo motor; the conventional active oil cylinder lifting is cancelled by the shooting head and the upper ejection core amine blowing mechanism, and the upper oil cylinder is adopted to drive the passive lifting structure, so that the control is simpler, and the movement is efficient; the sand shooting adopts a unique vacuum negative pressure sand shooting system, so that the sand shooting can be completed in a non-supercharging state of a hydraulic system, the impact of frequently used high-pressure oil on the hydraulic system is reduced, and the compactness and the precision of a sand core are ensured; and the top core is got under the machine, and the top core is steady, and it is convenient to get the core, adopts artifical or the automatic core of robot, makes to get the core more nimble, improves the production efficiency of system core system. The machine adopts an optimized combined driving mode of servo electric control driving and hydraulic proportional technology driving, has the advantages of long application of electricity taking and liquid driving, stable machine driving, quick movement and accurate positioning.

Drawings

Fig. 1 is a first schematic top view structure diagram of the present invention;

fig. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic structural view of the front view of the present invention with the safety screen removed;

FIG. 4 is a schematic side view of the safety screen of the present invention;

FIG. 5 is a schematic structural view of the sand feeding mechanism of the present invention;

fig. 6 is a schematic structural view of the upper pressure sand shooting mechanism of the present invention;

FIG. 7 is a schematic side view of the structure of FIG. 6;

fig. 8 is a schematic front view of the mold opening lifting mechanism of the present invention;

FIG. 9 is a schematic side view of the structure of FIG. 8;

FIG. 10 is a front view of the whole structure of the upper core blowing mechanism and the movable nozzle of the present invention;

FIG. 11 is a schematic top view of the structure of FIG. 10;

fig. 12 is a schematic front view structure diagram of the three-dimensional rack of the present invention;

fig. 13 is a front view structural schematic diagram of the sand removing mechanism of the present invention;

FIG. 14 is a side view schematic of the structure of FIG. 13;

fig. 15 is a front view structural schematic diagram of the lower ejector core mechanism of the present invention;

fig. 16 is a front view structural schematic diagram of the movable table of the present invention;

fig. 17 is a front view structural schematic diagram of the mold clamping device of the present invention;

FIG. 18 is a view from the direction A of FIG. 17;

fig. 19 is an assembly schematic diagram of the tool mold of the present invention during sand shooting;

the names corresponding to the sequence numbers in the figure are as follows:

the device comprises a movable workbench 1, a first linear rail 2, a lower core-jacking mechanism 3, a core-jacking rod 4, a frame structure 5, a base 6, a stand column 7, an upper crossbeam assembly 8, a lower crossbeam assembly 9, a connecting plate 10, a clamping mechanism 11, a quick-change locking mechanism 111, a sliding seat 112, a workbench air-extracting mechanism 113, a clamping die device 12, a clamping oil cylinder 13, a sand adding device 14, a sand adding hopper 141, a vibration motor 142, a sand adding butterfly valve 143, a far infrared ray tester 144, a lifting die-opening mechanism 15, an automatic sand blowing and parting liquid spraying mechanism 151, a lifting oil cylinder 16, a lifting frame 17, a connecting frame 18, a driving insert block 19, an upper core-shooting mechanism 20, a guide rod 201, an exhaust valve 202, a silencer 203, an angle valve 204, an upper compaction oil cylinder 21, a pressure head 22, a lifting guide rail 23, a movable shooting head 24, an air storage tank 25, a second linear rail 26, a third linear rail 27, an, The device comprises an upper core ejecting and blowing mechanism 29, a fixed frame 30, a guide wheel 31, a servo motor 32, a driving gear 33, a meshing rack 34, a turnover sand cleaning mechanism 35, a first driving oil cylinder 351, a sand cleaning lifting cylinder 352, a sand cleaning frame 353, a shooting plate positioning block 354, a turnover frame 355, a limiting column 356, a connecting frame 357, a safety screen 36, a cantilever operation screen 37, an electric control cabinet 38, a hydraulic system 39, a core ejecting synchronous frame 40, a lower core ejecting oil cylinder 41, a positioning pin 42, a quick-change locking oil cylinder 43, a workbench oil cylinder 44, a workbench base 45, a guide rail pair structure 46, a guide frame 47, a template 48, an upper core box 49, a shooting plate 50 and a lower core box 51.

Detailed Description

The full-automatic cold box core shooter is shown in figures 1-19: which comprises a movable workbench 1, a tooling die is arranged on the upper surface of the movable workbench, the tooling die comprises an upper core box 49, a shooting plate 50 and a lower core box 51 with reference to figure 19,

the moving operation is carried out, the bottom of the moving workbench 1 is supported on a first linear track 2, the moving workbench 1 moves along the front and back directions of the first linear track 2, a lower ejection core mechanism 3 is arranged at the bottom of the front end of the first linear track 2, the lower ejection core mechanism 3 comprises an ejection core rod 4 which is vertically driven, a three-dimensional rack structure 5 is arranged in the direction of the rear end region of the first linear track 2, the rack structure 5 comprises a base 6 which is positioned at the rear lower part of the first linear track, a group of stand columns 7 are respectively arranged on the base corresponding to two sides of the first linear track 2, an upper cross beam assembly 8 and a lower cross beam assembly 9 are arranged in the height direction of the stand columns 7, the upper cross beam assembly 8 and the lower cross beam assembly 9 are arranged perpendicular to the first linear track 2, connecting plates 10 are respectively arranged on the base 6 corresponding to two sides of the first linear track 2, and the bottom of each, the combination of the two clamping mechanisms 11 forms a clamping die device 12, the clamping parts of the two clamping mechanisms 11 are arranged oppositely and driven by respective clamping cylinders 13, one end of the upper beam assembly 8 in the length direction is fixedly provided with a sand adding device 14, the position of the upper beam assembly 8 in the length direction corresponding to the first linear rail 2 is fixedly provided with a lifting and die sinking mechanism 15, the lifting and die sinking mechanism 15 comprises a lifting cylinder 16, a lifting frame 17 and a connecting frame 18, the connecting frame 18 is fixedly connected to the corresponding area of the upper beam assembly 8 and the upper part of the lifting frame 17, four corners of the bottom of the lifting frame 17 are respectively provided with a driving insert block 19, the position of the upper beam assembly 8 in the length direction corresponding to the first linear rail 2 is provided with an upper sand injection mechanism 20, the upper beam assembly 8 is fixedly connected with an upper compaction cylinder 21 through a connecting piece, the upper compaction cylinder 21 is connected with a lower pressure head 22 through a guide, the two ends of the pressure head 22 are also provided with lifting guide rails 23 which are lifted synchronously, the pressure head 22 is used for butting joints of the movable shooting heads 24, the pressure head 22 is externally connected with an air storage tank 25, the upper surface of the lower cross beam assembly 9 is provided with a second linear rail 26 and a third linear rail 27 along the length direction, the second linear rail 26 and the third linear rail 27 are arranged at intervals, and the intervals between the third linear rail 26 and the third linear rail 27 correspond to the length area of the lifting guide rails 23; the blowing mechanism and the upper core-ejecting mechanism 28 are combined into a whole to form an upper core-ejecting blowing mechanism 29, the upper core-ejecting blowing mechanism 29 and the movable shooting head 24 are respectively and fixedly arranged at two sides of a fixed frame 30 to form an integral connection structure, the upper area of the movable shooting head 24 is correspondingly provided with a guide wheel 31, the upper area of the upper core-ejecting blowing mechanism 29 is correspondingly provided with a guide wheel 31, a servo motor 32 is arranged between two beams in the width direction of the fixed frame 30, the output shafts of the servo motor 32 are respectively provided with a driving gear 33, the lower surface of the lower beam assembly 9 is provided with a meshing rack 34 at the position corresponding to the driving gear 33, and the driving gear 33 is meshed and connected with the; a turnover sand cleaning mechanism 35 is fixedly arranged at the lower part of the lower cross beam assembly 9 corresponding to the right lower part of the sand adding device 14; the lower core-ejecting mechanism 3 is arranged at the front end of the frame structure 5.

The system also comprises a safety surrounding screen 36, a cantilever operation screen 37, an electric control cabinet 38 arranged at the periphery of the host machine and a hydraulic system 39;

the sand adding device 14 comprises a sand adding hopper 141, the sand adding hopper 141 is connected with a vibrating motor 142, a sand adding butterfly valve 143 and a far infrared ray tester 144 are respectively arranged at the bottom outlet of the sand adding hopper 141, the movable shooting head 24 is moved to a position below the sand adding hopper 141, the sand adding butterfly valve 143 below the sand adding hopper 141 is opened to add sand through the action of a control valve of the sand adding butterfly valve 143, after the sand is accumulated to a certain height in the sand storage cylinder, the far infrared ray tester 144 arranged at the sand adding opening sends a signal to close the control valve of the sand adding butterfly valve 143, the sand adding is finished, and if necessary, the vibrating motor 142 above the sand adding hopper can be opened to accelerate the sand adding;

the upper part of the pressure head 22 is connected with the driving end of the upper compaction oil cylinder 21, the bottom of the guide rod 201 is connected with the pressure head 22, the upper part of the guide rod 201 penetrates through the corresponding guide hole of the upper crossbeam assembly 9, the two sides of the pressure head 22 are provided with corresponding exhaust valves 202, and the exhaust valves 202 are provided with silencers 203 to reduce exhaust noise; the exhaust valve 202 is controlled to be opened and closed by an electromagnetic air valve, the bottom of the pressure head 22 is provided with a blowing port of a sand shooting mechanism with a hole plate and a filter screen plate, the pressure head 22 connects a blowing chamber with an external air storage tank 25 through an air guide rod and an angle valve 204, and the pressure head 22 is controlled to shoot sand by two large-caliber angle valves 204; the two ends of the pressure head 22 are respectively provided with a lifting guide rail 23, and the two lifting guide rails 23 are synchronously lifted and can be synchronously driven by an air cylinder and are responsible for lifting the movable injection head 23 and the blowing frame;

when the sand is shot, the pressure head 22 is pressed down to tightly press the movable shooting head 23 and the upper core box, airflow instantly enters a shooting cavity of the movable shooting head through the air blowing port to finish the sand shooting action, the upper part is used for exhausting, so that the cleaning is convenient, the exhaust effect is improved, a pressure regulating valve is arranged on a pipeline before entering the air storage tank, and the sand shooting pressure is regulated to 0.4-0.5MPa according to the process requirement;

the lifting mold opening mechanism 15 comprises a lifting oil cylinder 16, a lifting frame 17 and a connecting frame 18, the connecting frame 18 is fixedly connected with the corresponding area of the upper beam component 8 and the upper part of the lifting frame, four corners of the bottom of the lifting frame are respectively provided with a driving insert block,

the lifting mold opening mechanism 15 specifically comprises two groups of lifting oil cylinders 16 which are respectively arranged at two sides and a lifting frame 17 consisting of four guide rods,

the top ends of the four guide rods form an integral structure through a connecting frame 18; four cylinder-driven driving insertion blocks 19 are arranged on the lifting mold opening mechanism 15, the driving insertion blocks 19 are used for lifting an upper core box to complete the actions of mold opening and mold closing, automatic floating sand blowing and parting liquid spraying mechanisms 151 are arranged on a front lifting frame consisting of two guide rods at the front part at the bottoms of four corners, the automation and the use convenience of the equipment are improved, and when a mold is assembled and disassembled, a bottom lifting frame used for connecting two bottom feet at the same side must be located at the highest position above;

the connection of the pressure head 22 and the bottom shooting plate 50 adopts a two-oil-cylinder locking quick-change device, the connection of the blowing frame and the upper core box 49 adopts a two-oil-cylinder locking quick-change device, and the locking working condition can be monitored and observed through a computer;

the guide wheel 31 is a V-shaped wheel, and the lifting guide rail 23, the second linear guide rail 26 and the third linear guide rail 27 are all concave V-shaped guide rails, so that the sand accumulation of the walking rail is avoided;

the turnover sand cleaning mechanism 35 comprises a first driving oil cylinder 351, a sand cleaning lifting air cylinder 352, a sand cleaning frame 353, a shooting plate positioning block 354 and a turnover frame 355, wherein the first driving oil cylinders 351 positioned at two sides are respectively and fixedly arranged at corresponding positions of the upper crossbeam assembly 8, the shooting plate positioning block 354 is positioned above the sand cleaning frame 353, the shooting plate positioning block 354 is used for fixedly connecting a corresponding shooting plate, the bottom of the sand cleaning frame 353 is fixedly connected with the upper part of the turnover frame 355, one side of the upper part of the turnover frame 355 is pivoted with a lower output rod of the first driving oil cylinder 351, the bottom of the other side of the upper part of the turnover frame 355 is supported on a limiting column 356 on the vertical column, the bottom of the turnover frame 355 is pivoted with a connecting frame 357, and the connecting frame 357 is fixedly;

when production of each shift is finished and shooting cavity sand is shot, the pressure head moves to the position above the shooting plate positioning plate, the sand cleaning lifting air cylinder drives the sand cleaning frame to rise, the pressure head is pressed tightly, the shooting plate locking mechanism is opened by moving the pressure head, the sand cleaning frame descends, residual sand in the shooting plate and the pressure head is left on the turnover sand cleaning mechanism, the two first driving oil cylinders drive the turnover frame to turn over for 45 degrees to pour the residual sand in the sand receiving frame, the residual sand of the shooting plate and the shooting nozzle is cleaned by compressed air, the turnover frame is turned back to the original position after being cleaned, the sand cleaning frame is lifted again, the sand cleaning frame descends in place after the shooting plate is locked by the locking oil cylinders, and sand cleaning is finished

The lower core ejecting mechanism 3 comprises a core ejecting rod 4, a core ejecting synchronous frame 40 and a lower core ejecting oil cylinder 41, the lower core ejecting mechanism 3 is arranged below the moving workbench 1 at the moving-out position, the lower core ejecting oil cylinder 41 acts, the core ejecting rod 4 ejects the sand core out of a lower core box, and a robot or manual coring is carried out;

four positioning pins 42 are arranged on the movable working table surface to realize accurate positioning of the die, the die positioning device further comprises two die quick-change locking oil cylinders 43, a working table oil cylinder 44 and a working table base 45, the working table base 45 is supported on the first linear rail 2 through a guide rail pair structure 46, the output end of the working table oil cylinder 44 is connected with the working table base 45, and the working table oil cylinder 44 is driven by adopting a hydraulic proportional valve technology to realize the requirements of slow → fast → slow smooth transition of action;

each clamping mechanism 11 consists of a clamping oil cylinder 13 and a guide frame 47, a quick-change locking mechanism 111 is arranged between the template 48 and the mold to be clamped, a workbench air exhaust mechanism 113 is arranged on a sliding seat 112 of the clamping mechanism 11, and the sliding seat 112 is fixedly connected with the connecting plate 10.

In one embodiment, the safety enclosure 36 is a top-sealed structure, the front door is automatically opened for the work bench to enter and exit, and the side and rear doors are opened to facilitate cleaning of the equipment and maintenance and repair of the pneumatic components and the solenoid valves. Meanwhile, the side door and the rear door are provided with safety switches, so that the door opening, power off and shutdown functions are realized, and the safety of operators after entering the screen is ensured. The rear side wall screen is provided with an air suction opening which is directly communicated with a tail gas purification device, the concentration of on-site waste gas can be reduced to the minimum degree, meanwhile, an adjustable air suction interface is arranged on the rear upright post, when the workbench moves in, the air suction interface is automatically butted with the air suction opening on the die supporting frame, the lower part of the die is in a negative pressure state, and the sand shooting effect, particularly the triethylamine blowing effect, is improved. Meanwhile, the air draft interface is connected with a triethylamine tail gas processor interface arranged on the upper part of a machine beam, so that triethylamine residual air on the lower part of the mold is directly exhausted outdoors through an air draft pipe. The machine is unique and innovative in air exhaust of the air blowing frame, and can automatically and quickly exhaust residual air in the air blowing frame into an air exhaust system after air blowing is finished, so that the concentration of residual triethylamine air in the machine is greatly reduced.

The working principle and the specific operation steps are as follows:

1, a sand adding mechanism: the movable shooting head moves to the position below the sand adding hopper, the butterfly valve below the sand hopper is opened to add sand through the control valve action of the sand adding butterfly valve, when the sand is accumulated to a certain height in the sand storage barrel, the far infrared ray measuring instrument arranged at the sand adding opening sends a signal, the control valve of the butterfly valve is closed, and the sand adding is finished. If necessary, the vibrating motor above the sand hopper can be started.

2, an upper sand injection mechanism: the pressure head is driven by an upper compaction oil cylinder, and two guide rods are used for guiding. Two exhaust valves are arranged on two sides of the pressure head, and a silencer is arranged on each exhaust valve to reduce exhaust noise; the opening and closing of the exhaust valve are controlled by the electromagnetic air valve. The bottom of the sand shooting mechanism is provided with a blowing port with a hole plate and a filter screen plate, a blowing chamber is connected with an air storage tank through an air guide rod and an angle valve, and sand shooting is controlled by two large-caliber angle valves. When the sand is shot, the pressure head is pressed down to tightly press the movable shooting head and the upper core box, and the airflow enters the shooting cavity of the movable shooting head from the air blowing port instantly to finish the sand shooting action. The upper part is adopted for exhausting, so that the cleaning is convenient, and the exhaust effect is improved. A pressure regulating valve is arranged on the pipeline before entering the air bag, and the sand shooting pressure is regulated to be 0.4-0.5MPa according to the process requirement. The two sides of the pressure head are provided with lifting guide rails which are responsible for the lifting of the shooting head and the blowing frame.

3, lifting the mold opening mechanism: the device is driven by two groups of oil cylinders, four guide rods are used for guiding, and synchronous link frames are arranged at the top ends of the four guide rods; four driving insert blocks driven by cylinders are arranged on the front lifting frame and the rear lifting frame, so that the upper core box can be lifted, and the actions of opening and closing the mold are completed. The front side lifting frame is provided with a lower die automatic sand blowing and parting liquid spraying mechanism, so that the automation and the use convenience of the equipment are improved. When loading and unloading the mould, the lifting frame must be located at the highest position above.

4, a linkage mechanism for sand shooting and triethylamine blowing on the top core: the blowing mechanism and the upper core pushing mechanism are integrated and are connected in series with the shooting head fixing frame, and the servo motor drives the blowing mechanism to realize the stable transition of slow → fast → slow motion. After the sand adding station finishes sand adding, the movable shooting head is moved to a position below the upper pressing mechanism, a V-shaped wheel of the sand shooting mechanism moves to a lifting guide rail of the pressure head mechanism, the lifting guide rail descends, the shooting head presses on a mold, the upper pressure head presses a sand shooting barrel to shoot sand, and after sand shooting and air exhaust are finished, the shooting head is lifted by the lifting guide rail; then the V-shaped wheel of the air blowing core ejecting mechanism travels to a lifting guide rail of the pressure head mechanism, the lifting guide rail descends, the frame of the air blower compresses the die, the upper pressing mechanism compresses the die, the core is pressed downwards, and air blowing solidification is carried out. And meanwhile, the shooting head is moved to add sand at a sand adding station. After the sand core is solidified, the upper core ejecting mechanism and the lifting mechanism act together to separate the upper core box from the sand core and keep the upper core box in the lower core box.

The inner wall of the sand shooting cavity of the sand shooting machine is coated with the anticorrosion wear-resistant resin, so that the sand is convenient to clean, and the sand shooting machine is durable.

The connection of the shooting head and the shooting plate adopts a two-oil-cylinder locking quick-change device. The connection of the blowing frame and the upper core box adopts a two-oil-cylinder locking quick-change device, and the locking working condition can be monitored and observed through a computer.

The locking and unlocking of the quick switching device for shooting the plate, the upper core box and the side drawing plate need to be monitored on a computer to check the completion of the actions, and then the quick switching action of the next step is carried out.

5, a frame: the frame is a framework which forms the whole equipment, and all parts of the frame can be integrated to form the whole equipment.

6, overturning the sand removing mechanism: the turnover sand cleaning mechanism is driven by double oil cylinders, when production of each shift is finished and shooting cavity sand is shot, a shooting head moves to the upper part of the turnover sand cleaning mechanism, a sand cleaning lifting air cylinder sand cleaning frame rises to press the shooting head, a shooting plate locking mechanism is opened, the sand cleaning frame falls, residual sand in the shooting plate and the shooting head is remained on the turnover sand cleaning mechanism, the shooting plate is positioned by a positioning block, an oil cylinder drives a turnover frame to turn over for 45 degrees to pour the residual sand in a sand receiving frame, the residual sand of the shooting plate and a shooting nozzle is cleaned by compressed air, after the residual sand is cleaned, the turnover frame turns back to the original position, the sand cleaning frame is raised again, the shooting plate is locked by the locking oil cylinder, the sand cleaning frame descends to the right position, and the sand cleaning is. The increase of the mechanism greatly reduces the labor intensity of workers and saves the sand cleaning time.

7, a core pushing mechanism: the lower core ejecting mechanism mainly comprises a core ejecting rod, a core ejecting synchronous frame and a core ejecting oil cylinder. The lower core ejecting mechanism is arranged below the shifting-out workbench platform, and when the solidified sand core is moved to the machine core taking position, the lower core ejecting oil cylinder acts, and the core ejecting mechanism ejects the sand core out of the lower core box, so that the robot or manual core taking can be carried out.

8, moving the workbench: the movable working table is provided with 4 positioning pins to realize accurate positioning of the die, and the die can be quickly replaced by two die quick-change locking oil cylinders. The oil cylinder of the working platform is driven by adopting a hydraulic proportional valve technology so as to realize the requirements of slow → fast → slow smooth transition of actions. Two linear guide rails are arranged on the bottom surface of the workbench, and the workbench is pressure-resistant, wear-resistant and good in guiding performance.

9, a clamping mechanism: the center distance of the clamping oil cylinder is 530mm from the workbench surface, the effective stroke of the clamping oil cylinder is 400mm, and the maximum opening of the clamping plate is 2X700 mm. The cylinder diameter of the clamping cylinder is phi 100, and a workbench air suction mechanism is arranged on the base.

The whole core shooter comprises the following working steps: resetting the lower ejection core; manually cleaning the die cavity and the spray; when the mould moves into the sand shooting station along with the workbench and the workbench is moved in place, the lower part of the mould is communicated and pumped; lifting the mold opening mechanism to descend, descending the upper core box and closing the upper mold; then lifting the upper part of the mold opening mechanism to move, and then moving the shooting head to be positioned above the core box; the upper pressure mechanism descends, and after the shooting head descends to the proper position, a pressure head of the upper pressure mechanism presses the sand shooting barrel and tightly presses the core box; shooting sand; delaying exhaust after sand shooting is finished; the pressing mechanism and the shooting head rise simultaneously; the servo motor drives the movable shooting head to move, on one hand, the shooting head moves to a sand adding station, the butterfly valve controls the valve to act, the butterfly valve is opened to add sand, the far infrared rays are emitted quickly, the butterfly valve is closed to add sand, and on the other hand, the air blowing frame moves to the upper part of the core box; the upper pressure mechanism descends, after the blowing head descends to the proper position, the pressure head of the upper pressure mechanism presses the blowing frame and tightly presses the core box, the upper core ejecting oil cylinder extends out, and the core ejecting rod presses the core to descend to the surface of the sand core for core pressing; retracting the upper core-ejecting oil cylinder and lifting the core-ejecting rod; triethylamine is blown, and the blowing pressure is increased from low to high; after blowing, tail gas is discharged in a delayed manner; the upper pressure head oil cylinder floats, the upper core jacking oil cylinder extends, and the upper core jacking rod descends to jack the sand core; the upper pressure oil cylinder rises, and the pressure head rises; passively lifting the air blowing frame by about 20 mm, lifting the upper die by the oil cylinder, and opening the upper core box; the sand core is ejected from the upper die by the upper ejection core rod, the sand core is retained in the lower core box, the upper ejection core oil cylinder retracts, and the ejection core rod retracts to the original position; and lifting the pressure head and the blowing-up frame, and lifting the lifting mechanism to complete the die sinking. The mould is moved out along with the movable workbench; lifting the lower core ejection cylinder, ejecting the sand core, and manually taking away the sand core; and (5) descending the core jacking cylinder.

The machine has to meet all interlocking conditions in a single-cycle and full-automatic working mode to ensure the normal operation of the machine and avoid the damage of the machine and a mould due to misoperation or accidents.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. Full-automatic cold box core shooter, its characterized in that: the tooling die comprises a movable workbench, a tooling die is clamped on the upper surface of the movable workbench, the bottom of the movable workbench is supported on a first linear track, the movable workbench moves along the front-back direction of the first linear track, a lower core jacking mechanism is arranged at the bottom of the front end of the first linear track, the lower core jacking mechanism comprises a core jacking rod which is vertically driven, a three-dimensional rack structure is arranged in the direction of the rear end area of the first linear track, the rack structure comprises a base which is positioned at the rear lower part of the first linear track, a group of upright posts are respectively arranged on two sides of the base corresponding to the first linear track, an upper beam assembly and a lower beam assembly are arranged in the height direction of the upright posts, the upper beam assembly and the lower beam assembly are arranged perpendicular to the first linear track, and connecting plates are respectively arranged on two sides of the base corresponding to the first linear track, the bottom of each clamping mechanism is fixedly arranged on a corresponding connecting plate respectively, the two clamping mechanisms are combined to form a mold clamping device, the clamping parts of the two clamping mechanisms are arranged in opposite directions and driven by respective clamping cylinders, one end of the upper beam assembly in the length direction is fixedly provided with a sand adding device, a lifting and mold opening mechanism is fixedly arranged at a position of the upper beam assembly in the length direction corresponding to the first linear track, the lifting and mold opening mechanism comprises a lifting cylinder, a lifting frame and a connecting frame, the connecting frame is fixedly connected to a corresponding area of the upper beam assembly and the upper part of the lifting frame, driving inserting blocks are arranged at four corners of the bottom of the lifting frame respectively, an upper pressing sand shooting mechanism is arranged at a position of the upper beam assembly in the length direction corresponding to the first linear track, and an upper pressing cylinder is fixedly connected to the upper beam assembly through a connecting piece, the upper compaction oil cylinder is connected with a pressure head below through a guide piece, lifting guide rails which are lifted synchronously are further arranged at two ends of the pressure head, the pressure head is used for butting a joint of a movable shooting head, an air storage tank is externally connected with the pressure head, a second linear rail and a third linear rail are arranged on the upper surface of the lower cross beam assembly along the length direction and are arranged at intervals, and the interval between the third linear rail and the third linear rail corresponds to the length area of the lifting guide rails; the upper core ejecting and blowing mechanism is formed by combining a blowing mechanism and an upper core ejecting mechanism into a whole, the upper core ejecting and blowing mechanism and a movable shooting head are respectively and fixedly arranged at two sides of a fixed frame to form an integral connection structure, a guide wheel is correspondingly arranged at the upper area of the movable shooting head, the guide wheel is correspondingly arranged at the upper area of the upper core ejecting and blowing mechanism, a servo motor is arranged between two beams in the width direction of the fixed frame, a driving gear is respectively arranged on an output shaft of the servo motor, a meshing rack is arranged at the position, corresponding to the driving gear, of the lower surface of a lower beam assembly, and the driving gear is meshed and connected with the meshing rack; a turnover sand cleaning mechanism is fixedly arranged at the lower part of the lower cross beam assembly corresponding to the position right below the sand adding device; the lower core ejecting mechanism is arranged at the front end of the rack structure.

2. The fully automatic cold box core shooter of claim 1, wherein: the system also comprises a safety surrounding screen, a cantilever operation screen, an electric control cabinet and a hydraulic system which are arranged on the periphery of the host.

3. The fully automatic cold box core shooter of claim 1, wherein: the sand adding device comprises a sand adding hopper, the sand adding hopper is connected with a vibration motor, and a sand adding butterfly valve and a far infrared ray tester are respectively arranged at the bottom outlet of the sand adding hopper.

4. The fully automatic cold box core shooter of claim 1, wherein: the upper part of the pressure head is connected with the driving end of the upper compaction oil cylinder, the bottom of the guide rod is connected with the pressure head, the upper part of the guide rod penetrates through the corresponding guide hole of the upper crossbeam assembly, the two sides of the pressure head are provided with corresponding exhaust valves, and the exhaust valves are provided with silencers to reduce exhaust noise; the exhaust valve is controlled to be opened and closed through an electromagnetic air valve, the bottom of the pressure head is provided with a blowing port of a sand shooting mechanism with a hole plate and a filter screen plate, the pressure head connects a blowing chamber with an external air storage tank through an air guide rod and an angle valve, and the pressure head controls sand shooting through two large-caliber angle valves; and lifting guide rails are respectively arranged at two ends of the pressure head.

5. The fully automatic cold box core shooter of claim 1, wherein: the lifting mold opening mechanism specifically comprises a lifting frame consisting of two groups of lifting oil cylinders and four guide rods which are respectively arranged at two sides, and the top ends of the four guide rods form an integral structure through a connecting frame; the lifting mold opening mechanism is provided with four air cylinders for driving the insertion blocks to be inserted, and a front lifting frame consisting of two guide rods at the front part is provided with an automatic sand blowing and parting liquid spraying mechanism.

6. The fully automatic cold box core shooter of claim 1, wherein: the guide wheel is a V-shaped wheel, and the lifting guide rail, the second linear guide rail and the third linear guide rail are all concave V-shaped guide rails.

7. The fully automatic cold box core shooter of claim 1, wherein: the turnover sand cleaning mechanism comprises a first driving oil cylinder, a sand cleaning lifting air cylinder, a sand cleaning frame, a shooting plate positioning block and a turnover frame, wherein the first driving oil cylinder is positioned on two sides and fixedly arranged at the corresponding position of the upper cross beam assembly respectively, the shooting plate positioning block is positioned above the sand cleaning frame and is used for fixedly connecting a corresponding shooting plate, the bottom of the sand cleaning frame is fixedly connected with the upper part of the turnover frame, one side of the upper part of the turnover frame is pivoted with a lower output rod of the first driving oil cylinder, the other side of the upper part of the turnover frame is supported on a limiting column on the stand, the bottom of the turnover frame is pivoted with a connecting frame, and the connecting frame is fixedly connected with the corresponding position of the stand column.

8. The fully automatic cold box core shooter of claim 1, wherein: the lower core ejecting mechanism comprises a core ejecting rod, a core ejecting synchronous frame and a core ejecting oil cylinder, and the lower core ejecting mechanism is arranged below the workbench at the moving-out position.

9. The fully automatic cold box core shooter of claim 1, wherein: the movable workbench is provided with four positioning pins to realize accurate positioning of the mold, and further comprises two mold quick-change locking oil cylinders, a workbench oil cylinder and a workbench base, wherein the workbench base is supported on the first linear rail through a guide rail pair structure, and the output end of the workbench oil cylinder is connected with the workbench base.

10. The fully automatic cold box core shooter of claim 1, wherein: each clamping mechanism consists of an oil cylinder and a guide frame, a quick-change locking mechanism is arranged between the template and the mold to be clamped, a workbench air exhaust mechanism is arranged on a sliding seat of each clamping mechanism, and the sliding seat is fixedly connected with the connecting plate.