Sand shooting mechanism of cold box core making machine
Technical Field
The invention relates to the technical field of cold box core making machine structures, in particular to a sand shooting mechanism of a cold box core making machine.
Background
The sand shooting mechanism of the existing cold box core making machine drives a gas bag, a sand shooting barrel and a sand hopper to move forwards to a mold through a vertical driving mechanism, and then sand shooting is carried out.
Disclosure of Invention
In order to solve the problems, the invention provides a sand shooting mechanism of a cold core box core making machine, wherein a sand shooting plate at the bottom of a sand shooting cylinder can rapidly move towards a lower die to shoot sand, so that the service life of the whole mechanism is ensured, the sand shooting plate can be rapidly replaced, and the processing efficiency is ensured.
The utility model provides a sand shooting mechanism of cold box core making machine which characterized in that: the sand jet comprises a sand guide cylinder, a sand shooting cylinder and an air bag, wherein a sand hopper is arranged at the upper end of the sand guide cylinder, the lower part of the sand guide cylinder is positioned in an upper cavity of the sand shooting cylinder, a fixed cross beam is arranged on the outer ring of the upper part of the sand shooting cylinder, an air guide cavity is arranged on the outer wall of the fixed cross beam facing the sand shooting cylinder, the inner wall of the upper end of the air guide cavity is fixedly arranged on the corresponding outer wall of the sand guide cylinder, a guide sealing flange is fixedly arranged on the inner wall of the lower end of the air guide cavity, the inner wall of the guide sealing flange is tightly attached to the outer wall of the sand shooting cylinder, an air outlet pipe of the air bag is communicated to the air guide cavity, air upwards enters the sand shooting cylinder along the outer wall of the sand shooting cylinder, at least two vertical oil cylinders are arranged on the fixed cross beam, a piston at the lower part of each vertical oil cylinder is fixedly arranged on a side-protruding structure of the outer wall of the sand shooting cylinder, a sand shooting cylinder expanding from inside to outside is arranged at the bottom of the sand shooting cylinder, outer walls at two sides of the sand shooting opening are provided with pairwise arranged clamping jaws, the middle end of each clamping jaw is positioned on a rotating pin, and the top of the two pistons of the clamping jaw are respectively and used for clamping the clamping plate of the double-clamping plate fixedly arranged at the two ends of the double-head oil cylinder.
It is further characterized in that: the air bag is provided with two outlets, each outlet is externally connected with the air outlet pipe, the air outlet pipe is provided with a pneumatic control sand shooting angle valve, the pneumatic control sand shooting angle valve ensures accurate control of air flow, and the two air outlet pipes are respectively arranged on two sides of the air guide cavity to ensure uniform inflow of high-pressure air;
the air bag is fixedly arranged on the upper end face of the corresponding position of the fixed cross beam;
the number of the vertical oil cylinders is two, the two vertical oil cylinders are fixedly arranged on the upper end surface of the fixed cross beam respectively, and the lower pistons of the vertical oil cylinders penetrate through the fixed cross beam and are fixedly arranged on a side convex structure of the outer wall of the sand shooting barrel;
the side convex structure is arranged on the outer side of the reinforcing rib of the sand shooting barrel, and the lower piston is fastened on the side convex structure through a bolt;
the sand hopper is of a structure which is inwardly closed from top to bottom, a sealing butterfly valve is arranged at the end face of an inlet at the upper end of the sand guide cylinder, and the control part of the sealing butterfly valve is exposed out of the side wall of the sand guide cylinder to ensure that the butterfly valve can be controlled in time;
the sand guide cylinder is sleeved with a sealing mounting flange corresponding to the upper end inner wall of the air guide cavity, and the sealing mounting flange is fastened on the upper end inner wall of the air guide cavity through screws, so that the sealing of the air guide cavity is ensured, and the disassembly and the assembly are convenient.
After the technical scheme is adopted, sand enters the sand guide barrel through the sand hopper and finally enters the sand shooting barrel, high-pressure gas in the gas bag enters the gas guide cavity through the gas outlet pipe and finally enters the sand shooting barrel, wherein the sand shooting barrel is driven to ascend or descend through the vertical oil cylinder; to sum up, the bottom of penetrating a sand section of thick bamboo penetrates the sand board and can advance towards the mould of below fast, and then penetrates sand, ensures the working life of whole mechanism, and penetrates the sand board and can carry out quick replacement, has guaranteed machining efficiency.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic side view of the structure of FIG. 1;
FIG. 3 isbase:Sub>A schematic view of section A-A of FIG. 1;
the names corresponding to the numbers in the figure are as follows:
the sand guide device comprises a sand guide cylinder 1, a sand shooting cylinder 2, an air bag 3, a sand hopper 4, a fixed cross beam 5, an air guide cavity 6, an upper end inner wall 7, a lower end inner wall 8, a guide sealing flange 9, an air outlet pipe 10, a vertical oil cylinder 11, a lower piston 12, a side convex structure 13, a sand shooting port 14, a clamping jaw 15, a rotating pin 16, a double-end oil cylinder 17, a sand shooting plate 18, an outlet 19, a pneumatic control sand shooting angle valve 20, a reinforcing rib 21, a sealing butterfly valve 22 and a sealing mounting flange 23.
Detailed Description
A sand shooting mechanism of a cold box core making machine is shown in figures 1-3: the sand jet device comprises a sand guide cylinder 1, a sand jet cylinder 2 and an air bag 3, wherein a sand hopper 4 is arranged at the upper end of the sand guide cylinder 1, the lower part of the sand guide cylinder 1 is positioned in an upper cavity of the sand jet cylinder 2, a fixed cross beam 5 is arranged on the outer ring of the upper part of the sand jet cylinder 2, an air guide cavity 6 is arranged on the outer wall of the fixed cross beam 5 facing the sand jet cylinder 2, the inner wall 7 at the upper end of the air guide cavity 6 is fixedly arranged on the corresponding outer wall of the sand guide cylinder 1, a guide sealing flange 9 is fixedly arranged on the inner wall 8 at the lower end of the air guide cavity 6, the inner wall of the guide sealing flange 9 is tightly attached to the outer wall of the sand jet cylinder 2, an air outlet pipe 10 of the air bag 3 is communicated into the air guide cavity 6, air upwards enters the sand jet cylinder 2 along the outer wall of the sand jet cylinder 2, at least two vertical oil cylinders 11 are arranged on the fixed cross beam 5, a lower piston 12 of each vertical oil cylinder 11 is fixedly arranged on a side convex structure 13 on the outer wall of the sand jet cylinder 2, a sand jet cylinder 2 is provided with a sand jet port 14 which is expanded from inside to outside, clamping jaw 14 from inside to outside, clamping jaws 15 are arranged on the two outer walls of the sand jet port 14, the two sides of the sand jet port 14, the clamping jaw 15 which are arranged in pairs, the clamping pin 16 of each clamping pin, and the clamping plate 17 of the double-head of the clamping piston 15, and are respectively used for clamping piston 18 of the double-clamping piston of the double-head piston, and used for clamping piston 17.
The air bag 3 is provided with two outlets 19, each outlet 19 is externally connected with an air outlet pipe 10, the air outlet pipes 10 are provided with air control sand shooting angle valves 20, the air control sand shooting angle valves 20 ensure accurate control of air flow, and the two air outlet pipes 10 are respectively arranged at two sides of the air guide cavity 6 to ensure uniform inflow of high-pressure air;
the air bag 3 is fixedly arranged on the upper end surface of the fixed cross beam 5 at the corresponding position;
the number of the vertical oil cylinders 11 is two, the two vertical oil cylinders 11 are respectively and fixedly arranged on the upper end surface of the fixed cross beam 5, and the lower piston 12 of the vertical oil cylinder 11 penetrates through the fixed cross beam 5 and is fixedly arranged on a side convex structure 13 on the outer wall of the sand shooting barrel 2;
the side convex structure 13 is arranged outside the reinforcing rib 21 of the sand shooting barrel 2, and the lower piston 12 is fastened to the side convex structure 13 through bolts;
the sand hopper 4 is of a structure which is inwardly closed from top to bottom, a sealing butterfly valve 22 is arranged at the end face of an inlet at the upper end of the sand guide cylinder 1, and a control part of the sealing butterfly valve 22 is exposed out of the side wall of the sand guide cylinder to ensure that the butterfly valve can be controlled in time;
the position of the upper end inner wall of the sand guide cylinder 1, which corresponds to the air guide cavity 6, is sleeved with a sealing installation flange 23, and the sealing installation flange 23 fastens the upper end inner wall 7 of the air guide cavity 6 through a screw, so that the sealing of the air guide cavity is ensured, and the disassembly and the assembly are convenient.
The working principle is as follows: sand finally gets into and penetrates a sand section of thick bamboo after entering into leading a sand section of thick bamboo through the sand fill, high-pressure gas in the gas package passes through the outlet duct and gets into the air guide cavity, finally get into and penetrates a sand section of thick bamboo, wherein penetrate a sand section of thick bamboo and rise or descend through vertical to cylinder drive, because the outer wall of penetrating a sand section of thick bamboo is hugged closely to the inner wall of direction sealing flange arranges, the vertical motion of penetrating a sand section of thick bamboo can not influence the sealed of whole air guide cavity, and then ensure to penetrate going on smoothly of sand, and when penetrating sand, only need penetrate a sand section of thick bamboo through vertical to cylinder drive and advance can, make the bottom of penetrating a sand section of thick bamboo penetrate sand shooting plate can penetrate sand towards the mould downwards fast, in addition, because two pairs of clamping jaws are used for the centre gripping and loosen the shooting plate of bottom through double-end cylinder fast drive respectively, make the shooting plate can carry out quick replacement.
The detailed description of the embodiments of the present invention is provided above, but the present invention is only the preferred embodiments of the present invention, and should not be considered as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the invention should be covered by this patent.