CN210937008U

CN210937008U - Automatic purging machine for exhaust riser of static pressure molding line

Info

Publication number: CN210937008U
Application number: CN201921680220.8U
Authority: CN
Inventors: 徐治新; 陈泽民; 靳保国; 梁加芳; 马栾生; 孙峰; 孙威威; 周云平; 杨阳阳; 段松松
Original assignee: First Tractor Co Ltd
Current assignee: First Tractor Co Ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-07-07
Anticipated expiration: 2029-10-09

Abstract

The utility model relates to an automatic machine that sweeps of static pressure molding line exhaust rising head locates on the static pressure molding line, including base plate subassembly, lifting unit, the subassembly and the electrical system of blowing, base plate subassembly includes frame and check rack, lifting unit includes: the blowing assembly comprises a blowing bag, a blowing pipe and a valve; the lifting assembly and the air blowing assembly are arranged on a frame of the base plate assembly, the bottom end of the oil cylinder is fixed on an oil cylinder connecting seat, the oil cylinder connecting seat is fixed on a movable plate, and the movable plate fixes the two air blowing bags through nuts; the guide bar up-and-down motion in the guide sleeve guides the lifting of the oil cylinder, the automatic purging mechanism is novel in concept and simple in structure, can automatically purge the sand mould riser, avoids incomplete blowing, blow leakage and floating sand splashing of manual purging, is high in purging efficiency, effectively improves sand mould quality, and has good use value.

Description

Automatic purging machine for exhaust riser of static pressure molding line

Technical Field

The utility model relates to a static pressure molding technical field, concretely relates to automatic machine that sweeps of static pressure molding line exhaust rising head.

Background

Casting company green sand static pressure line, the molding of single host computer, the operation beat is 55 casees/hour, and the main product is: the cylinder head comprises a Richardson four-cylinder body, a 4NC four-cylinder body, a 4M5L four-cylinder body, a firewood feeding four-cylinder body, various cylinder head castings and the like. The static pressure line is compacted and molded, so that the whole sand mold is poor in air permeability, a plurality of exhaust risers are designed in the process for exhausting, and feeding is performed after the casting is cooled. Because the number of casting exhaust risers is large, the maximum number of casting molds reaches 40 exhaust risers, a sand mold is usually drilled with 2 servo air drilling hole machines and drilled through the exhaust risers to achieve the exhaust effect, however, after the exhaust risers are drilled through, a large amount of floating sand remains on the wall of the exhaust risers, after the mold is closed, the floating sand falls into a cavity, casting product defects are caused after casting, and the influence on the product quality is great.

The method is characterized in that the waste products and defective products of the static pressure line are analyzed, the reasons for causing the waste products and the defective products are found out, and the defective products are found to be rough in surface finish of the casting and a small amount of broken sand holes due to floating sand reserved in an exhaust riser after the drilling machine drills holes.

In order to blow off floating sand on the wall of the exhaust riser and reduce the influence of the floating sand on the product quality, 2 production workers blow air to each exhaust riser one by using air blowing guns before box closing in the prior art. However, the manual purging of the dead head has the following problems: 1. the manual blowing is that air is blown from the cavity to the outside of the vent hole before the box is turned over in the upper box, and because the diameter of the vent pin of the template is smaller than that of a drill bit of the drilling machine, the aperture difference exists between the joint surface of the vent pin and the drill hole, floating sand exists at the joint surface, and the air cannot be discharged completely by using the blowing mode; 2. because the lower core section is formed by continuously arranging the upper box and the lower box, floating sand is easy to splash by manual blowing and falls into the adjacent lower box; 3 because the gas pocket is more (about 40), and it is very fast to add the operation beat again, often causes the hourglass to blow the condition, and the long-time repetitive mechanical labor of operation workman, personnel are tired very easily, and the effect of blowing is unstable.

SUMMERY OF THE UTILITY MODEL

To prior art's defect, the utility model aims to provide a machine is swept automatically to static pressure molding line exhaust rising head should sweep the mechanism automatically and think novelty, simple structure, can realize sweeping automatically to the sand mould rising head, avoid blowing that the manual work sweeps unclean, leak and blow and float the sand and splash, sweep efficient, effectively promote the sand mould quality, have fine use value.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides an automatic machine that sweeps of static pressure molding line exhaust riser, locates on the static pressure molding line, automatic machine that sweeps includes base plate subassembly, lifting unit, the subassembly and the electrical system of blowing, the base plate subassembly includes frame and check rack, lifting unit includes: the blowing assembly comprises a blowing bag, a blowing pipe and a valve; the lifting assembly and the air blowing assembly are arranged on a rack of the substrate assembly, and the rack is of a cuboid structure and is fixed on the raceway frame; the bottom end of the oil cylinder is fixed on an oil cylinder connecting seat, the oil cylinder connecting seat is fixed on a movable plate, and the movable plate fixes the two blowing bags through nuts; the fixed plate is welded on the rack, the guide sleeve is fixed on the fixed plate of the rack through a bolt, the guide rod is connected with the movable plate through a bolt, and the guide rod moves up and down in the guide sleeve to guide the lifting of the oil cylinder; the air blowing bag is of a hollow flat cylindrical shape, so that compressed air with a certain volume can be stored, and the stable and continuous air flow in the blowing process is ensured; the side opening of the blowing bag is connected with a pneumatic air compression pipeline through a hose; the bottom of the blowing bag is provided with a threaded hole and is connected with a valve and a blowing pipe through a pipe joint; the lattice net rack is fixed on the air blowing bag, and the lattice net is fixed at the bottom of the lattice net rack and used for positioning the blowing pipe and the position of the same sand mould riser, so that the position of the blowing pipe can be conveniently adjusted according to different sand mould risers; the lifting assembly and the blowing assembly act under the control of the electric control system to automatically blow the sand mould riser.

Furthermore, the rack is of a cuboid structure formed by square steel, and the grid net rack is formed by angle steel and two steel plates and is fixed on the air blowing bag; wherein the steel plate is to prevent sand from splashing onto the adjacent sand box during the air blowing process.

Furthermore, the guide rods and the guide sleeves are two groups and are respectively positioned on two sides of the oil cylinder, and a sealing cavity is formed between the guide rods and the guide sleeves through a guide belt, a groove ring and a dust ring.

Furthermore, the blowpipe is a universal bamboo joint metal pipe, and the using length, angle and blowing amount can be adjusted at will; the bottom screw hole of the blowing bag is a 1/2 screw hole of a pipe, the cooling pipe is a 1/2 pipe, the valve is a 1/2 manual valve, and the switch can be selected according to the number of sand mould risers.

Furthermore, pressure oil required by the oil cylinder comes from a secondary engine system of the hydrostatic line pump station and is connected to a hydraulic valve plate of the automatic purging machine through a hydraulic stop valve, and the hydraulic valve plate is provided with an electromagnetic valve, a hydraulic lock and a one-way throttle valve and used for controlling the action of the oil cylinder.

Furthermore, compressed air required by the air blowing bag comes from the air bag, compressed air of the air bag comes from a static pressure line compressed air pipeline, a solenoid valve and a pneumatic control valve are arranged between the air blowing bag and the air bag, the solenoid valve is actuated for ventilation, and the solenoid valve is powered off to stop air blowing.

Has the advantages that: the utility model designs an automatic purging machine of the sand mould riser according to the characteristics of a static pressure molding line, and can automatically purge the sand mould riser by the utility model, 1, the cost is reduced, 2 posts (4 workers) are needed to use tools to operate the sandbox in intermittent motion by manual purging, and the automatic purging machine greatly reduces the labor cost and the potential safety hazard; 2. the efficiency is improved: the manual purging of one sand mold needs more than 50 seconds, and the automatic purging machine can complete the purging within 15 seconds; 3. The quality is improved: the manual blowing has the conditions of incomplete blowing, blow leakage, cavity damage and floating sand splashing, so that the defective product is over 30 percent, and the automatic blowing machine has no problems, so that the defective product proportion is reduced to below 5 percent.

Drawings

Fig. 1 is a front view of an automatic purging machine according to an embodiment of the present invention;

FIG. 2 is a left side view of the automatic purging machine of the embodiment of the present invention

FIG. 3 is a top view of the automatic purging machine of the embodiment of the present invention

Fig. 4 is a hydraulic schematic diagram of an automatic purging machine according to an embodiment of the present invention;

fig. 5 is a pneumatic schematic diagram of the automatic purging machine according to the embodiment of the present invention.

Reference numerals: 1. A frame; 2. an oil cylinder; 3. a fixing plate; 4. An oil cylinder connecting seat; 5. a movable plate; 6. an air blowing bag; 7. a grid frame; 8. a manual ball valve; 9. a cooling tube; 10. a grid network; 11. a guide bar; 12. a guide sleeve; 13. A guide belt; 14. a groove ring; 15. a dust ring; 16. M20X50 external hexagonal bolt; 17. M12X30 hexagonal outer bolt; 18. an M27 nut; 19. M12X40 hexagonal outer bolt; 20. M12X30 hexagonal outer bolt; 21. M16X35 external hexagonal bolt; 22. a pipe joint; 24. an electromagnetic directional valve; 25. hydraulic locking; 26. a one-way throttle valve; 27. a hydraulic stop valve; 28. a hydraulic valve plate; 29. a pneumatic control valve; 30. and (4) air bags.

Detailed Description

The following description of the present invention will be made in detail with reference to the accompanying drawings and the specific embodiments, and the present invention is only used for combining the more clear description of the drawing for the drawings about the directions such as up, down, left, right, front, and back directions, and the technical solution of the present invention is not used as the absolute direction of the structure.

As shown in fig. 1-3, the utility model provides an automatic machine that sweeps of static pressure molding line exhaust rising head locates on the static pressure molding line for realize sweeping automatically to the sand mould rising head, the utility model discloses an automatic machine that sweeps includes base plate subassembly, lifting unit, the subassembly and the electrical system of blowing, base plate subassembly includes frame 1 and check rack 7, lifting unit includes: the device comprises an oil cylinder 2, a guide sleeve 12, a fixed plate 3, a guide rod 11, an oil cylinder connecting seat 4 and a movable plate 5, wherein the air blowing assembly comprises an air blowing bag 6, a blowing pipe 9 and a valve; the lifting assembly and the air blowing assembly are arranged on the frame 1 of the base plate assembly.

The frame 1 adopts 50MM square steel to form a cuboid structure and is fixed on a raceway frame, the raceway frame is two rows of support frames provided with a plurality of pulleys, a rectangular sand box moves on the pulleys of the raceway frame, and the grid net rack 7 adopts 30MM angle steel and two 680MMx870MM steel plates and is fixed on the blowing bag 6; the steel plates are positioned on the left side and the right side of the air blowing bag 6, play a role in blocking floating sand, and aim to prevent sand from splashing to an adjacent sand box during air blowing; the lattice net 10 is fixed at the bottom of the lattice net rack 7 and is used for positioning the blowing pipe 9 and the position of the same sand mould riser, so that the position of the blowing pipe 9 can be conveniently adjusted according to different sand mould risers; of course, the types and sizes of the square steel and the angle steel used in the frame 1 or the lattice framed 7 may be selected according to actual needs, and are not limited to the above sizes.

The oil cylinder 2 is an actuating element of a lifting mechanism, the bottom end of the oil cylinder 2 is fixed on an oil cylinder connecting seat 4 through a bolt, the oil cylinder connecting seat 4 is fixed on a movable plate 5, the movable plate 5 is connected with steel plates at two ends of the movable plate through bolts, and two blowing bags 6 are fixed by combining nuts; the fixed plate 3 is welded on the frame 1, the guide sleeve 12 is fixed on the fixed plate 3 of the frame 1 through bolts, specifically, four M12 bolts can be adopted for fixing, the guide rod 11 is connected with the movable plate 5 through bolts, and the guide rod 11 moves up and down in the guide sleeve 12 to guide the lifting of the oil cylinder 2; two groups of guide rods 11 and guide sleeves 12 are arranged on the front side and the rear side of the oil cylinder 2, a sealed cavity is formed between the guide rods 11 and the guide sleeves 12 through guide belts 13, groove rings 14 and dust rings 15, and the fixing mode of each component in the lifting assembly is not limited to the above mentioned mode and other common fixing modes in the prior art can also be adopted.

Reference numerals 16-21 in fig. 1-3 respectively represent the size models of the bolt and the nut specifically used when connecting each component of the lifting assembly and the air blowing assembly in this embodiment, but do not limit the present invention, the present invention is not limited to the bolt and the nut that must use the above size models in practical application, nor is the connection mode of the bolt and the nut, and those skilled in the art can select other components with proper size or model according to actual needs, or freely select other common connection modes.

The blowing bag 6 is of a hollow flat cylindrical shape, can store compressed air with a certain volume, and ensures stable and continuous air flow in the blowing process; the side opening of the blowing bag 6 is connected with a pneumatic air pressure pipeline through a hose; the bottom of the blowing bag 6 is provided with a screw hole which is connected with the valve and the blowing pipe 9 through a pipe joint 22; the lattice net 10 is characterized in that the frame 7 is fixed on the blowing bag 6, the lattice net 10 is fixed at the bottom of the lattice net frame 7 and used for positioning the blowing pipe 9 and the sand mould riser, and the blowing pipe 9 can be conveniently adjusted according to different sand mould risers.

Specifically, the bottom of the blowing bag 6 is provided with 20 wire holes of a pipe 1/2 (English system size, which is equivalent to 12.7 mm, the same below), and the valve and the blowing pipe 9 are connected through a pipe joint 22; the blowpipe 9 is an 1/2 universal bamboo joint metal pipe, and the use length, angle and air blowing quantity can be adjusted at will; the valve is a 1/2 manual ball valve 8, and a switch can be selected according to the number of sand mould risers, so that blowing leakage and damage to a cavity are avoided; the blowing nozzle at the lower end of the blowing pipe 9 is inserted into the mesh of the mesh net 10, and is fixed inside the mesh net 10 because the position of the blowing pipe 9 is easily changed by the reaction force of the compressed air when the blow valve is opened.

The electrical control system includes: the electromagnetic induction type proximity switch, the electromagnetic valve, the PLC digital quantity input module, the PLC digital quantity output module, the button and the electric circuit are formed, and the electric control system controls the lifting assembly and the blowing assembly to move through the PLC module to automatically blow the sand mould riser.

As shown in fig. 4, in this embodiment, the pressure oil required by the oil cylinder 2 comes from the auxiliary machine system of the hydrostatic line pump station, the pressure is 10MPa, and the oil cylinder is connected to a hydraulic valve plate 28 of the automatic purging machine through a hydraulic stop valve 27, and the hydraulic valve plate 28 is provided with an electromagnetic directional valve 24, a hydraulic lock 25 and a one-way throttle valve 26 for controlling the action of the oil cylinder 2, wherein the electromagnetic valve K2 attracts the oil cylinder 2 to rise, and the electromagnetic valve K3 attracts the oil cylinder 2 to fall.

In this embodiment, compressed air required by the air blowing bag 6 comes from the 0.8m air blowing bag 30, compressed air of the air blowing bag 30 comes from a static pressure air pipeline, as shown in fig. 5, an electromagnetic valve K1 and a pneumatic control valve are arranged between the air blowing bag 6 and the air blowing bag 30, the electromagnetic valve K1 is actuated for ventilation, and the electromagnetic valve K1 is powered off to stop air blowing.

The utility model discloses an automatic purging machine, before the use, at first according to the technology of purging to the exhaust rising head of sand mould in the molding of green sand, carry out the design of automatic purging machine, confirm each part model size, then make processing to each part, the preparation is accomplished the back, confirm automatic purging machine mounted position before the case closer on the static pressure line, then install automatic purging machine on the static pressure line, including mechanical parts, hydraulic system, the installation of blowing pipeline, the gas circuit is connected, the connection of hydraulic pressure pipeline, and electric control system's erection joint, control system inserts static pressure line control program, then debug, can carry out the automation to the sand mould rising head after the debugging is accomplished and sweep.

Automatic hair-dryer concrete working procedure when using as follows:

1. the upper box sand mold is pushed to the lower part of the automatic blowing machine, and the sand box is positioned through a positioning device;

2. descending a lifting assembly of the automatic purging machine, and adjusting a blowing pipe to be aligned with a sand mould riser;

3. the electromagnetic valve in the gas circuit is closed, the compressed air is opened, and the purging action is carried out;

4. and after the purging is finished, the lifting assembly rises, the positioning device is opened, and the upper box sand mold is pushed forwards.

5. The purging action completes one cycle.

In the row of sand boxes of the static pressure molding line, an upper sand box and a lower sand box are arranged in sequence, and the upper sand box is provided with an exhaust riser which needs to be purged; the lower mold sand box is not provided with an exhaust riser, and does not need to be blown, so that the blowing device is kept still when the sand box is a lower mold.

The utility model discloses combine the demand of sweeping and designing of static pressure molding line sand box rising head, simple structure, design benefit saves the cost of labor, reduces the potential safety hazard, and very big improvement sweeps efficiency, and can effectively avoid blowing unclean, leak and blow, destroy the die cavity and float the sand condition of splashing, makes the defective proportion fall to below 5%.

The part of the utility model not detailed is prior art.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any form, but all the technical matters of the present invention are still within the scope of the present invention, including any simple modification, equivalent change and modification made by the technical matters of the present invention to the above embodiments.

Claims

1. The utility model provides an automatic machine that sweeps of static pressure molding line exhaust riser, locates on the static pressure molding line, its characterized in that: automatic machine of sweeping includes base plate subassembly, lifting unit, the subassembly and the electrical system of blowing, the base plate subassembly includes frame and check rack, lifting unit includes: the blowing assembly comprises a blowing bag, a blowing pipe and a valve; the lifting assembly and the air blowing assembly are arranged on a rack of the substrate assembly, and the rack is of a cuboid structure and is fixed on the raceway frame;

the bottom end of the oil cylinder is fixed on an oil cylinder connecting seat, the oil cylinder connecting seat is fixed on a movable plate, and the movable plate fixes the two blowing bags through nuts; the fixed plate is welded on the rack, the guide sleeve is fixed on the fixed plate of the rack through a bolt, the guide rod is connected with the movable plate through a bolt, and the guide rod moves up and down in the guide sleeve to guide the lifting of the oil cylinder;

the air blowing bag is of a hollow flat cylindrical shape, so that compressed air with a certain volume can be stored, and the stable and continuous air flow in the blowing process is ensured; the side opening of the blowing bag is connected with a pneumatic air compression pipeline through a hose; the bottom of the blowing bag is provided with a threaded hole and is connected with a valve and a blowing pipe through a pipe joint; the lattice net rack is fixed on the air blowing bag, and the lattice net is fixed at the bottom of the lattice net rack and used for positioning the blowing pipe and the position of the same sand mould riser, so that the position of the blowing pipe can be conveniently adjusted according to different sand mould risers;

the lifting assembly and the blowing assembly act under the control of the electric control system to automatically blow the sand mould riser.

2. The automatic purging machine for the air exhaust risers of the static molding line of claim 1, wherein: the frame is of a cuboid structure formed by square steel, and the grid net rack is formed by angle steel and two steel plates and is fixed on the air blowing bag; wherein the steel plate is to prevent sand from splashing onto the adjacent sand box during the air blowing process.

3. The automatic purging machine for the air exhaust risers of the static molding line of claim 1, wherein: the guide rods and the guide sleeves are two groups and are respectively positioned on two sides of the oil cylinder, and a sealing cavity is formed between the guide rods and the guide sleeves through a guide belt, a groove ring and a dustproof ring.

4. The automatic purging machine for the air exhaust risers of the static molding line of claim 1, wherein: the air blowing pipe is a universal bamboo joint metal pipe, and the using length, angle and air blowing amount can be adjusted at will; the bottom screw hole of the blowing bag is a 1/2 screw hole of a pipe, the cooling pipe is a 1/2 pipe, the valve is a 1/2 manual valve, and the switch can be selected according to the number of sand mould risers.

5. The automatic purging machine for the air exhaust risers of the static molding line of claim 1, wherein: the pressure oil required by the oil cylinder comes from a secondary machine system of a hydrostatic line pump station and is connected to a hydraulic valve plate of the automatic purging machine through a hydraulic stop valve, and the hydraulic valve plate is provided with an electromagnetic valve, a hydraulic lock and a one-way throttle valve and used for controlling the action of the oil cylinder.

6. The automatic purging machine for the air exhaust risers of the static molding line of claim 1, wherein: compressed air required by the air blowing bag comes from the air bag, compressed air of the air bag comes from a static pressure line compressed air pipeline, a solenoid valve and a pneumatic control valve are arranged between the air blowing bag and the air bag, the solenoid valve is actuated to suck air, and the solenoid valve is powered off to stop air blowing.