WO2019015042A1

WO2019015042A1 - Coating system for improving quality of mold core coating

Info

Publication number: WO2019015042A1
Application number: PCT/CN2017/100796
Authority: WO
Inventors: 李军; 周立新; 杨标; 周秀琴; 倪红军; 吕帅帅; 汪兴兴
Original assignee: 南通国盛铸造有限公司
Priority date: 2017-07-19
Filing date: 2017-09-06
Publication date: 2019-01-24
Also published as: CN107377898A

Abstract

A coating system for improving the quality of mold core coating, comprising a stirring fan (1), an air nozzle (2), a coating pool (3), a frame (4), a ventilation pipe (5), and a compressed air device (7). A bottom portion of the coating pool (3) is provided with the frame (4), and the coating pool (3) is internally provided with the air nozzle (2) and the stirring fan (1); a plurality of the air nozzles (2) and a plurality of stirring fans (1) are evenly distributed at the bottom portion of the coating pool (3); and the air nozzle (2) is connected to the compressed air device (7) by means of the ventilation pipe (5).

Description

Coating system for improving mold core coating quality

Technical field

The utility model relates to a coating device, in particular to a coating system for improving the coating quality of a mold core.

Background technique

In the foundry industry, it is often necessary to spray anti-stick coatings or thermal protective coatings on casting molds. At present, manual spraying is mainly used for spraying. However, due to the complexity of many sand types, there are many coating layers, and the uncertain factors of manual spraying are many. The thickness of the coating is uneven, and the phenomenon of incomplete coverage often occurs. After casting, the casting is easily scrapped or defective, and subsequent processing increases the labor cost again. The existing mechanical spraying device moves back and forth along the moving track, and the operation flexibility Lower, poor positioning accuracy, the position of the nozzle can only be moved left and right, only for a certain device, the position of the painted part is fixed, it is easy to produce a dead angle of spraying, and the uniform application device needs to be separately set, which greatly increases the extra cost.

Utility model content

SUMMARY OF THE INVENTION The object of the present invention is to solve the deficiencies in the prior art and to provide a coating system for improving the coating quality of a mold core, which can greatly improve the coating effect on the surface of the casting, the surface of the casting It is more uniform and flat, and the defects are obviously reduced. By adopting an air compression device with high power, strong power and high efficiency of compressed air, the coating efficiency is higher and the production cost is reduced.

Technical Solution: A coating system for improving the coating quality of a mold core according to the present invention, comprising: a stirring fan, an air nozzle, a paint pool, a frame, a ventilation duct and an air compression device; The bottom of the pool is provided with a rack, and the paint pool is provided with an air nozzle and a stirring fan, and the air nozzle and the stirring fan comprise a plurality of and evenly distributed at the bottom of the paint pool, and the air nozzle is connected with an air compression device through the air duct;

The air compression device comprises a gas pressure shell and a protective shell. The electromagnetic coil is installed in the protective shell, the electromagnetic coil is fixed on the lower part of the outer side of the pressure air shell, and the tube shaft type air outlet valve, the intake valve and the power are installed in the gas pressure shell. The spring and the magnetic piston have a hollow valve body and a sealing cone. The tube shaft type air outlet valve is fixed on the central hole of the upper end of the gas pressure shell, and the lower end of the tube shaft type air outlet valve is from the center of the upper end of the gas pressure shell. After the hole passes through, enters the air pressure shell and passes through the magnetic piston and the power spring to enter the upper side close to the intake valve. The lower end of the tube shaft type air outlet valve has a gap with the upper side of the intake valve, and the intake valve is installed. On the annular inner step of the inner end of the intake port, the lower surface of the intake valve cooperates with the annular inner step of the inner end of the intake port at the lower end of the air plenum to seal or open the intake passage into the plenum.

Further, the air nozzle and the agitating fan are coaxially arranged, and are evenly arranged 4-8.

Further, the magnetic piston is installed on the upper part of the inner cavity of the air pressure shell, and the power spring is installed on the lower part of the inner cavity of the air pressure shell, and the upper end of the power spring is pressed against the lower end and the lower end of the magnetic piston to press the air pressure. The lower end of the inner cavity of the shell.

Further, the air filter is fixed at the air inlet hole at the lower end of the air pressure shell, the air filter is connected to the air inlet hole, and the air filter is provided with an air inlet.

Further, the electromagnetic coil is further electrically connected to a magnetic field controller, and the magnetic field controller is installed in the protective casing.

Further, the hollow valve body is a hollow tubular hollow shaft, and a surface of a portion of the hollow valve body that protrudes into the air pressure shell is made into a smooth cylindrical surface, and the cylindrical surface is matched with a central circular hole of the magnetic piston; the hollow valve body The lower end is made of an air outlet sealing end, and the lower end surface of the air outlet sealing end is manufactured at the lower end of the hollow valve body, and the upper end surface is made into an inner cone surface, and the large end of the inner cone surface communicates with the upper end of the tube shaft type air outlet valve, the small end and the tube shaft The lower end of the outlet valve communicates with a sealing cone mounted on the inner tapered surface.

Advantageous Effects: The core coating device of the present invention can greatly improve the coating effect on the surface of the casting, the surface of the casting is more uniform, flat, and the defects are obviously reduced, and the air with high power, strong power and high efficiency of compressed air is adopted. The compression device makes coating more efficient and reduces production costs.

DRAWINGS

Figure 1 is a schematic view showing the overall structure of the coating device of the present invention;

Figure 2 is a front elevational view of Figure 1;

Figure 3 is a plan view of Figure 1;

Figure 4 is a schematic view showing the structure of the air compressing device of the present invention.

Detailed ways

The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

A coating system for improving the coating quality of a mold core as shown in FIG. 1 to FIG. 3, comprising a stirring fan 1, an air shower head 2, a paint bath 3, a frame 4, a ventilation duct 5, and an air compressing device 7; The bottom of the paint pool 3 is provided with a frame 4, and the paint pool 3 is provided with an air nozzle 2 and a stirring fan 1, and the air nozzle 2 and the stirring fan 1 comprise a plurality of and evenly distributed at the bottom of the paint pool 3, The air jet head 2 is connected to the air compressing device 7 through a vent pipe 5.

Preferably, in order to filter the coating and to apply a more uniform coating to the casting, the air jet 2 and the agitating fan 1 are arranged coaxially and uniformly arranged 4-8.

Figure 4 is a schematic view showing the structure of the air compressing device. The air compressing device 7 includes a compressed air shell 71 and a protective casing 77. The electromagnetic coil 76 is mounted in the protective casing 77. The electromagnetic coil 76 is fixed to the lower portion of the outer side of the compressed air shell 71, and a tube shaft type air outlet valve is installed in the air pressure housing 71. The intake valve 710, the power spring 73, the magnetic piston 72, the tube shaft type air outlet valve include a hollow valve body 74 and a sealing cone 75, and the tube shaft type air outlet valve is fixed on the center hole of the upper end of the air pressure shell 71, and the tube shaft type The lower end of the air outlet valve passes through the center hole of the upper end of the air pressure housing 71, enters the air pressure housing 71, passes through the magnetic piston 72, and the power spring 73, and then enters the upper side of the intake valve 710, and the tube shaft type air outlet valve The lower end has a gap with the upper surface of the intake valve 710, and the intake valve 710 is mounted on the annular inner step of the inner end of the intake port, and the inner side of the intake valve 710 is annular with the inner end of the intake hole of the lower end of the compressed air casing 71. The inner surface of the inner surface can be sealed to open or open the intake passage into the air plenum 71.

The magnetic piston 72 is mounted on an upper portion of the inner cavity of the air pressure housing 71, and the power spring 73 is mounted on the air pressure housing 71. In the lower portion of the inner chamber, the upper end of the power spring 73 is pressed against the lower end of the inner end of the inner casing of the compressed air casing 71 at the lower end and the lower end of the magnetic piston 72.

The air filter 78 is fixed to the air inlet hole at the lower end of the air pressure shell 71, the air filter 78 is connected to the air inlet hole 713, and the air filter 78 is provided with an air inlet 79, and the air filter is disposed at the air filter. A filter or filter cloth or filter paper or filter sponge is installed inside the 78. Air dust in the foundry environment can be effectively filtered by the added air filter 78.

The electromagnetic coil 76 is also electrically connected to a magnetic field controller, and the magnetic field controller is mounted in the protective casing 77.

The hollow valve body 74 is a hollow tubular hollow shaft, and the surface of the portion of the hollow valve body 74 that protrudes into the air pressure shell 71 is made into a smooth cylindrical surface, and the cylindrical surface is matched with the central circular hole of the magnetic piston 72; the hollow valve The lower end of the body 74 is formed with an air outlet sealing end, and the lower end surface of the air outlet sealing end is manufactured at the lower end of the hollow valve body 74, and the upper end surface is formed into an inner tapered surface. The large end of the inner tapered surface communicates with the upper end of the tube shaft type air outlet valve, and the small end portion It is in communication with the lower end of the tube-shaft outlet valve, and a sealing cone 75 is mounted on the inner tapered surface.

The magnetic piston 72 is made into a cylindrical core, and the center line of the cylindrical core is made with a smooth central circular hole, and the outer circular surface of the cylindrical core is made into a smooth outer circular surface; A hollow ring groove is formed in the center circular hole, and a sealing ring is embedded in the ring groove; a concave ring groove is formed on the smooth outer circular surface, a sealing ring is embedded in the ring groove; the central circular hole and the hollow valve body 74 are The cylindrical surface cooperates to seal the cylindrical surface and can slide on the cylindrical surface of the hollow valve body 74; the outer circular surface cooperates with the inner cavity of the compressed air shell 71 to seal the inner cavity of the air pressure housing 71 and can be inside the air pressure housing 71. Sliding inside the cavity.

The principle of the utility model is that the magnetic field controller turns on the energizing circuit of the electromagnetic coil 76 to generate an electromagnetic field, and the attractive force generated by the electromagnetic field pulls the magnetic piston 72 to move downward against the pressure of the power spring 73. At this time, the intake valve 710 is in itself. The air intake passage is closed by the action of gravity, and the air in the air pressure chamber 1 is compressed when the magnetic piston 72 descends to generate internal pressure, and the pressurized air is blown upward from the lower end of the hollow valve body 74 into the inner cone surface of the air outlet sealing end. The sealing cone 75 sealed with the inner tapered surface of the outlet sealing end continues to move upward, and is transported from the upper end of the hollow valve body 74 into the air duct 5 to the air head 2 for coating application work.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been disclosed above in the preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make some modifications or modifications to equivalent embodiments when using the above-disclosed technical contents without departing from the technical solutions of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still within the scope of the technical solutions of the present invention.

Claims

A coating system for improving the coating quality of a mold core, comprising: a stirring fan (1), an air nozzle (2), a paint bath (3), a frame (4), a ventilation duct (5), and air a compression device (7); a bottom frame (4) is disposed at the bottom of the coating pool (3), and an air nozzle (2) and a stirring fan (1) are disposed in the coating pool (3), and the air nozzle (2) And the agitating fan (1) comprises a plurality of and evenly distributed at the bottom of the coating tank (3), the air nozzle (2) is connected to the air compression device (7) through the ventilation duct (5);

The air compressing device (7) comprises a compressed air shell (71) and a protective shell (77), and an electromagnetic coil (76) is mounted in the protective shell (77), and the electromagnetic coil (76) is fixed on the outer side of the compressed air shell (71). In the lower part, a tube shaft outlet valve, an intake valve (710), a power spring (73), and a magnetic piston (72) are installed in the gas pressure shell (71), and the tube shaft type air outlet valve includes a hollow valve body (74). And a sealing cone (75), the tube shaft type air outlet valve is fixed on the central hole of the upper end of the pressure air shell (71), and the lower end of the tube shaft type air outlet valve passes through the center hole of the upper end of the air pressure housing (71), enters The compressed air shell (71) passes through the magnetic piston (72) and the power spring (73) and enters the upper side of the intake valve (710). The lower end of the tube shaft outlet valve and the intake valve (710) There is a gap on the upper side, and the intake valve (710) is installed on the annular inner step of the inner end of the intake port, and the lower side of the intake valve (710) and the inner end of the intake end of the lower end of the compressed casing (71) are in the annular shape. The lateral faces of the steps cooperate to seal or open the intake passage into the compressor casing (71).
A coating system for improving the coating quality of a mold core according to claim 1, characterized in that the air shower head (2) and the stirring fan (1) are coaxially arranged and uniformly arranged 4-8.
A coating system for improving the coating quality of a mold core according to claim 1, wherein said magnetic piston (72) is mounted on an upper portion of a cavity of the gas pressure casing (71), and a power spring ( 73) Installed in a lower portion of the inner cavity of the compressed air casing (71), the upper end of the power spring (73) is pressed against the lower end of the inner surface of the compressed air casing (71) at the lower end and the lower end of the magnetic piston (72).
A coating system for improving the coating quality of a mold core according to claim 1, wherein the air filter (78) is fixed to the air inlet hole at the lower end of the air pressure housing (71). The filter (78) communicates with the air inlet (713), and the air filter (78) is provided with an air inlet (79).
A coating system for improving the coating quality of a mold core according to claim 1, wherein said electromagnetic coil (76) is also electrically connected to a magnetic field controller, and the magnetic field controller is mounted on the protective casing (77). Inside.
A coating system for improving the coating quality of a mold core according to claim 1, wherein the hollow valve body (74) is a hollow tubular hollow shaft, and the hollow valve body (74) is inserted into the compressed air. The surface of the portion inside the shell (71) is made into a smooth cylindrical surface, the cylindrical surface is matched with the central circular hole of the magnetic piston (72); the lower end of the hollow valve body (74) is formed with an air-tight sealing end, and the lower end surface of the air-sealing end The lower end and the upper end surface of the hollow valve body (74) are manufactured as an inner tapered surface, the large end of the inner tapered surface communicates with the upper end of the tube shaft type air outlet valve, and the small end communicates with the lower end of the tube shaft type air outlet valve, and the inner cone A sealing cone (75) is mounted on the surface.