KR101539085B1 - Forced air motor drive - Google Patents

Abstract

The present invention relates to a forced driving device of a reciprocating air motor for a painting equipment and, more specifically, relates to a device to forcibly drive an air motor when an air intake pipe is closed due to a neutral state of a piston valve or a condensation problem caused by long term usage. The forced driving device for an air motor (100) comprises: an inlet (56) formed on one side of a piston valve housing (9); a housing plug (16) coupled to both side surfaces of the piston valve housing (9) having an outlet (55); a connection hose (53) to connect the inlet (56) of the piston valve housing (9) and the outlet (55) of the housing plug (16); and a valve (51) coupled to the connection hose (53) to turn on and off the air flow of the connection hose. When the air motor completely stops due to a condensation problem during painting work or the maintenance of a neutral state of the piston valve, high viscosity paint is not removed from a high pressure pump and is hardened in a high pressure pump; thereby discarding the painting equipment. However, the present invention minimizes damage to the painting equipment by removing the paint existed in the high pressure pump while temporarily driving the air motor using a forced driving device.

Description

&Quot; Forced air motor drive "

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a forced driving apparatus for a reciprocating air motor for a painting machine, and more particularly, to a driving apparatus for forcedly driving an air motor when a suction pipe is closed due to a cold state due to use of the piston valve in a neutral state or for a long time .

Background Art [0002] Air motors for use in paints are widely known in the field of painting equipment and are widely used. The air motor is discharged at a temperature equal to or lower than a freezing point due to a throttle loss in the process of discharging air introduced into the cylinder.

As shown in FIG. 1, when the air motor is operated for a long time, ice particles are generated in the discharge port, the air pipe path and the piston valve path by ice phenomenon, and the ice is attached to the wall surface by the air pipe, To slow down the operation of the vehicle, or to stop the vehicle completely.

When the air motor is temporarily stopped, it may take several hours to melt the ice of the passage. In such a time, the painting equipment remaining in the high-pressure pump must be discarded by the hardening of the paint.

In addition, in the KR 10-1310083 filed and filed by the present applicant, the piston valve 4 changing the upper air passage 65 and the lower air passage 66 of the cylinder 1 is located at the neutral position, The piston valve body 13 may be stopped.

Accordingly, the present invention discloses a method of temporarily forcibly driving the air motor when the intake pipe is shut off due to the cold state of the piston valve due to the neutral state or the use for a long time.

Korean Patent No. 10-0129630 discloses a method for delaying the freezing time of the entire cylinder by rotating the air flowing into the cylinder with the exhaust air pressure around the cylinder. Also, in a similar manner, 10-2009-0033277 discloses an exhaust manifold comprising a fin-shaped exhaust manifold, a silencer, and a heat source for generating heat from a warm atmosphere to melt the ice that may form in the manifold during an exhaust cycle, Discloses a reciprocating air motor having an air valve including an air passage for drawing the warm atmosphere into the muffler so as to be conducted through the fold.

In addition, in the prior art for forced driving, KR 20-0388982 discloses a technique in which an air injection pipe is provided in a motor pump discharge portion and a suitable amount of air is forcedly injected into water pumped by a pump.

The above-mentioned prior art is inadequate in achieving the object of the present invention, and the stoppage of the paint motor is often caused by disposing of the high-pressure pump itself due to the hardening of the paint remaining in the high- It is necessary to temporarily drive the air motor for forced discharge.

1. KR 10-1310083, 'Reciprocating air motor', registration date: 2013.09.12. 2. KR 10-0129630, 'Freezing free low noise air operated pump', registered on November 11, 1997. 3. KR 10-2009-0033277, 'Noise-reducing noise reducing air motor exhaust device', published on Apr. 1, 2009. 4. KR 20-0388982, 'Motor Pump with Air Supply', Registered on: June 28, 2005.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for temporarily driving an air motor when the intake pipe is closed due to cooling due to use of the piston valve in a neutral state or for a long period of time .

In order to achieve the above object, the present invention provides a forced driving apparatus for an air motor 100, comprising: an inlet 56 formed on one side of a piston valve housing 9; A connecting hose 53 for connecting the inlet 56 of the piston valve housing 9 to the outlet 55 of the housing plug 16 and a connecting hose 53 for connecting the connecting hose 53, And a valve (51) connected to the connection hose and for turning on / off the air flow of the connection hose.

The present invention also provides a forced drive apparatus for an air motor (100), comprising: a housing plug (16) fastened to both side portions of a piston valve housing (9) and having an outlet (55); A high pressure hose 52 connected to the outlet 55 and supplying compressed air; And a valve (51) connected to the high-pressure hose (52) to turn on / off the compressed air.

Further, the present invention is to provide an air motor forcible driving device characterized in that the valve (51) is coped with a solenoid valve.

Finally, the present invention provides a forced driving apparatus for an air motor, comprising: a discharge pressure sensor (88) coupled to a discharge portion of a high pressure pump (81); A housing plug (16) fastened to both side portions of the piston valve housing (9) and having an outlet (55); A high pressure hose 52 connected to the outlet 55 for supplying compressed air; And a valve (51) connected to the high pressure hose (52) for turning on / off the compressed air by a signal of the discharge pressure sensor (88).

The present invention has the following effects.

First, when the air motor is completely stopped due to the cooling problem or the neutral state of the piston valve during the painting operation, the air motor can not remove the high viscosity paint from the high pressure pump and is hardened in the high pressure pump, However, since the paint remaining in the high-pressure pump can be removed while the forced driving device of the present invention is temporarily driven forcibly, there is an advantage that damage to the painting equipment can be minimized.

Second, the present invention has a simple structure and can be easily applied in the field, and has an advantage that the air motor can be temporarily driven only by compressed air.

Thirdly, when the air motor is stopped, the forced drive is automatically activated by the configuration of the discharge pressure sensor of the high-pressure pump and the valve that is turned on and off by the discharge pressure sensor, so that the air motor does not stop.

Figure 1 is an embodiment of air motor cooling when operating for a long time.
2 is a perspective view of a painting machine having a movable air motor.
Fig. 3 is a perspective view of a preferred embodiment of a paint air motor. Fig.
4 is a cross-sectional view of the air motor.
5 is an internal structural view of the piston valve housing 9. Fig.
6 is a flow chart of the in-cylinder air flow according to the upward and downward movement of the piston.
7 is a schematic diagram of another preferred embodiment of the present invention.
8 is a schematic diagram of another preferred embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In addition, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and the present invention is not necessarily limited to those shown in the drawings. In the drawings, the thickness is enlarged to clearly show various parts and regions. In the drawings, packing members and o-ring members are not shown for convenience of explanation, and the thickness of a part or an area of the component is exaggerated.

FIG. 1 shows one embodiment of the cooling which is generated when the air motor is driven for a long time, and the air motor forms a temperature below the freezing point due to the throttle loss of the exhaust air. Thereby, it is freeze around the discharge port (A), and ice granules are formed inside the air pipe and the cylinder (B). When the ice particles are adhered to the air pipe to grow, the air pipe is blocked and the air motor is stopped.

The air motor frequently fails to remove the paint of high viscosity from the high-pressure pump when the air motor is completely stopped due to the cold problem during the painting operation, so that the paint motor is cured in the high-pressure pump and the entire painting equipment is often discarded.

In order to solve the above problem, the present invention is a method of manually operating the piston valve body 13 in KR 10-1310083 ('Reciprocating air motor', registration date: 2013.09.12.), A method for temporarily driving an air motor is described. More specifically, it is constituted of a push shaft 14, a push button 18 and a spring 17 capable of manually operating the piston valve 4 and the piston valve body 13 so that the air motor can be forcibly driven , Even if the reciprocating air motor is stopped due to a problem of freezing, the paint remaining in the high-pressure pump can be removed temporarily by forcibly driving, thereby minimizing damage to the painting equipment.

The present invention intends to disclose an air motor forcibly driving apparatus for temporarily driving an air motor by a method different from the above-described technology.

2 is a perspective view of a painting machine having a movable air motor. When painting on shipbuilding equipments or steel structures, it is necessary to use a high pressure pump (81) for air-less painting equipment with high working efficiency to prevent the scattering of paint.

2, the air-less high-pressure pump includes a reciprocating air motor (not shown) for driving the piston in the cylinder 1 in the up-and-down reciprocating motion using compressed air of 10 bar or less A high pressure pump 81 which is connected to the piston shaft 35 of the reciprocating air motor 100 and sucks the paint through the paint inlet pipe 82 and displaces at a high pressure of 300 bar or more, And a spray gun 83 connected to the high pressure pump 81 and the hose 85 to spray the paint.

FIG. 3 is a perspective view of a preferred embodiment of a paint air-using air motor. The air motor includes a piston 33 reciprocating upward and downward with compressed air, a piston 33 engaged with the piston 33, A cylinder (1) guiding the upward and downward movement of the piston (33), a base (41) fastened to the lower portion of the cylinder (1) and forming a closed space together with the cylinder (1) A piston valve housing 9 coupled to one side of the piston 1 and guiding the upward and downward movement of the piston valve 4 and the piston valve body 13; A piston valve 4 for changing the piston movement of the piston 33 and a piston valve body 13 for changing the up and down movement of the piston 33, And the air flow is changed to the upper air path (65) and the lower air path (66) (20).

Fig. 4 is a cross-sectional view of the air motor, Fig. 5 is an internal configuration view of the piston valve housing 9, and Fig. 6 is a cylinder air flow chart according to piston up-and-down movement.

The piston (33) reciprocates up and down by the compressed air supplied into the cylinder (1). The piston (33) is fastened to a piston shaft (35), which causes the high-pressure pump (81) to operate.

As shown in FIGS. 4 to 6, the air flowing into the cylinder 1 and the air flow discharged through the upper air passage 65 and the lower air passage 66 are supplied to the cylinder 1, And the discharge are changed by the piston valve 4 and the piston valve body 13 in the piston valve housing 9.

The compressed air supplied to the reciprocating air motor 100 is supplied to the cylinder 1 through the upper air pipe line 65 to the lower air pipe line 66 through a line formed by the piston valve housing 9 and the piston valve body 13, .

The supplied compressed air moves the piston 33 up and down. At this time, the air on the opposite side of the piston is discharged to the discharge port 63 through the upper air pipe line (65) to the lower air pipe line (66).

6, the piston valve housing 9 includes a valve plate 3, a piston valve 4 for changing the air discharge path to the valve plate 3, a piston valve 4 connected to the piston valve 4, A piston valve body 13 reciprocating up and down by a pilot valve 20, a roller 6 fastened to one side of the piston valve body 13 to facilitate movement of the piston valve body 13, A spring (5) fixed to one side surface of the piston valve body (4) and applying a constant pressure to the roller (6), a block (7) acting as a latching jaw in the upward and downward movement of the piston valve body Packing 12 is inserted into the grooves formed on both side surfaces of the piston 13 and the air inlet 60 is provided on one side of the piston valve body 13 to guide upward and downward movement of the piston valve body 13. The piston valve housing 9 is preferably fastened together with the piston housing gasket 2 to one side surface of the cylinder 1.

In addition to the stopping of the air motor due to cooling, when the piston valve 4 is opened at the same time as the upper intake opening and the exhaust opening of the valve plate 3, the upward and downward movement of the piston valve body 13 is stopped. Therefore, the air motor stops operating even in the above case.

Even if the compressed air supplied to the air motor 100 is low or the moving friction force of the piston valve body 13 is increased and the piston valve body 13 can not pass the block 7, It stops.

Accordingly, it is intended to provide a forced driving device capable of forcibly operating an air motor when the intake pipe is shut off due to the cooling of the piston valve 4 due to the neutral state or the use for a long time.

7 is a schematic diagram of another preferred embodiment of the present invention.

The present invention relates to a forced drive device for an air motor (100), comprising: a housing plug (16) fastened to both side portions of a piston valve housing (9) and having an outlet (55); A high pressure hose 52 connected to the outlet 55 for supplying compressed air; And a valve 51 connected to the high-pressure hose 52 to turn on and off the compressed air.

The compressed air uses less than 10 bar of compressed air that has passed through a compressor or regulation.

The above configuration is a simple structure and is a method of forcibly driving the piston valve body 13 and the piston valve 4 using external compressed air.

Figure 8 is a schematic diagram of another preferred embodiment of the present invention.

The present invention relates to a forced drive device for an air motor, comprising: an inlet (56) formed at one side of a piston valve housing (9); A housing plug (16) fastened to both side portions of the piston valve housing (9) and having an outlet (55); A connecting hose 53 connecting the inlet 56 of the piston valve housing 9 and the outlet 55 of the housing plug 16; And a valve (51) coupled to the connection hose (53) for turning on / off the air flow of the connection hose.

The above configuration is a method for forcibly driving the piston valve body 13 and the piston valve 4 by using the compressed air remaining in the piston valve housing 9. [

In addition, in the present invention, the valve 51 is replaced with a solenoid valve or an electric and electronic driving system.

The present invention also provides a forced drive apparatus for an air motor (100), comprising: a discharge pressure sensor (88) fastened to a discharge portion of a high pressure pump (81); A housing plug (16) fastened to both side portions of the piston valve housing (9) and having an outlet (55); A high pressure hose 52 connected to the outlet 55 for supplying compressed air; And a valve (51) connected to the high pressure hose (52) for turning on and off the compressed air by a signal from the discharge pressure sensor (88).

The above configuration is a method in which the forced driving device is automatically operated when the discharge pressure of the high-pressure pump 81 becomes lower than the set pressure. Therefore, even if the stop of the air motor does not occur and the stop of the air motor occurs, it can be automatically driven.

However, air motor stoppage due to cooling can not be continuously driven.

It is preferable that the above configuration is combined with an alarm sound and a visual member so that the operator can recognize the discharge pressure when the discharge pressure is lower than the set pressure. It is desirable to reduce the damage of the secondary painting equipment by informing the user that the paint is driven under abnormal conditions.

The above-described technique is a technique in which the operator can easily drive the air motor temporarily when the air motor is stopped due to the closing of the air pipe due to cooling, the neutral state of the piston valve and the abnormal operating condition of the piston valve. It has the effect of reducing extension and secondary damage.

1: Cylinder, 2: Casket, 3: Valve plate, 4: Piston valve, 5: Spring, 6: Roller, 7: Block, 9: Piston valve housing, 12: U-packing, 13: And a valve for supplying the hydraulic pressure to the piston is provided in the housing so as to be capable of rotating the piston in the axial direction of the piston. 53: connecting hose, 55: outlet, 56: inlet, 60: air inlet, 61: vent. A discharge port of the upper air passage and a lower air passage of the lower air passage are provided with a means for moving the high pressure pump into the high pressure pump. motor.

Claims (4)

A piston (33) for reciprocating up and down with compressed air; a piston shaft (35) connected to the piston (33) to drive the high - pressure pump (81); and a cylinder A base 41 which is fastened to the lower portion of the cylinder 1 and forms a closed space together with the cylinder 1 and a piston valve 4 which is fastened to one side surface of the cylinder 1, A piston valve housing 9 for guiding the up and down movement of the piston 33, a piston valve 4 for changing the upper air pipe path 65 and the lower air pipe path 66 to the cylinder 1, For changing the compressed air flow supplied to the cylinder 1 to the upper air pipe path 65 and the lower air pipe path 66 by moving the piston valve 4 and the piston valve body 13 to switch the up- In a forced driving apparatus for an air motor including a pilot valve (20)
An inlet 56 formed at one side of the piston valve housing 9;
A housing plug (16) fastened to both side portions of the piston valve housing (9) and having an outlet (55);
A connecting hose 53 connecting the inlet 56 of the piston valve housing 9 and the outlet 55 of the housing plug 16;
And a valve (51) coupled to the connection hose (53) for turning on / off the air flow of the connection hose.
A piston (33) for reciprocating up and down with compressed air; a piston shaft (35) connected to the piston (33) to drive the high - pressure pump (81); and a cylinder A base 41 which is fastened to the lower portion of the cylinder 1 and forms a closed space together with the cylinder 1 and a piston valve 4 which is fastened to one side surface of the cylinder 1, A piston valve housing 9 for guiding the up and down movement of the piston 33, a piston valve 4 for changing the upper air pipe path 65 and the lower air pipe path 66 to the cylinder 1, For changing the compressed air flow supplied to the cylinder 1 to the upper air pipe path 65 and the lower air pipe path 66 by moving the piston valve 4 and the piston valve body 13 to switch the up- In a forced driving apparatus for an air motor including a pilot valve (20)
A housing plug (16) fastened to both side portions of the piston valve housing (9) and having an outlet (55);
A high pressure hose 52 connected to the outlet 55 for supplying compressed air;
And a valve (51) coupled to the high-pressure hose (52) for switching on / off the compressed air.
4. The method according to any one of claims 1 to 3,
And the valve (51) is replaced with a solenoid valve.
A piston (33) for reciprocating up and down with compressed air; a piston shaft (35) connected to the piston (33) to drive the high - pressure pump (81); and a cylinder A base 41 which is fastened to the lower portion of the cylinder 1 and forms a closed space together with the cylinder 1 and a piston valve 4 which is fastened to one side surface of the cylinder 1, A piston valve housing 9 for guiding the up and down movement of the piston 33, a piston valve 4 for changing the upper air pipe path 65 and the lower air pipe path 66 to the cylinder 1, For changing the compressed air flow supplied to the cylinder 1 to the upper air pipe path 65 and the lower air pipe path 66 by moving the piston valve 4 and the piston valve body 13 to switch the up- In a forced driving apparatus for an air motor including a pilot valve (20)
A discharge pressure sensor 88 coupled to the discharge portion of the high-pressure pump 81;
A housing plug (16) fastened to both side portions of the piston valve housing (9) and having an outlet (55);
A high pressure hose 52 connected to the outlet 55 for supplying compressed air;
And a valve (51) coupled to the high-pressure hose (52) for turning on / off the compressed air by a signal from the discharge pressure sensor (88).

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