KR20090097606A - Sealing gun apparatus injecting a fixed quantity of fluid for sealer coating - Google Patents

Abstract

A fixed quantity of fluid supply apparatus for sealer coating is provided to supply the fixed quantity of fluid easily to the bent target object to be coated without using a long spray nozzle. A fixed quantity of fluid supply apparatus(100) for sealer coating comprises a cylinder housing(111); an air cylinder(110) which is connected to an operation rod(115) located inside the cylinder housing and is provided with a piston(113) reciprocating upward and downward by the air pressure supplied by the air supply part; a booster(130) which is integrally combined to the lower end of the cylinder housing and flows the fluid to the sealer inlet formed at one side to discharge it through a sealer outlet formed at the lower end; a cutoff valve(150) which is combined to the one side of the booster so as to be connected with the sealer inlet and controls the fluid supplied to the booster through the sealer inlet; and a coating gun unit(170) which is combined to the lower end of the booster so as to be connected with the sealer outlet and discharges the fixed quantity of the fluid flown through the sealer inlet to the lower end through sealer outlet.

Description

Sealing gun apparatus injecting a fixed quantity of fluid for sealer coating}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant flow rate supply device for applying a sealer, and more particularly, to a constant flow rate supply device for applying a sealer for supplying a fixed flow rate of a fluid to an application object using an air cylinder.

In general, in production lines such as automobiles, sealing is performed for bonding between materials, soundproofing, rustproofing, heat dissipation, body reinforcement, and prevention of foreign matter intrusion. The device is supplied with a fluid, transferred to the application gun unit through pneumatic air cylinders, and then extruded at a constant pressure to apply a certain amount to the application surface.

BACKGROUND ART Conventional sealer constant flow rate supply devices include a transfer device for transferring a fluid by means of a pump or the like, a control device for controlling operation and controlling the temperature of the fluid, and a fluid to be applied to the application object. A device system for a fixed flow rate transfer of a fluid including a robot moving by a predetermined path, the fluid being coupled to an arm of the robot and operated according to a signal transmitted from the control device, the fluid transferred by the transfer device. Apply the fluid's fixed oil quantity to the application object using pneumatic pressure.

Hereinafter, with reference to FIGS. 1A and 1B, a conventional oil quantity supply device for applying a sealer will be described.

As shown in FIG. 1A, the conventional sealer application constant flow rate supply device 1 is a booster at the tip of the arm of the robot so that the fluid flow rate can be applied while moving on the application object as the robot (not shown) moves. The cylinder 10 is mounted. The booster cylinder 10 is provided with a cylinder 13 and a piston 13 which is connected to an operating rod 12 provided in the cylinder housing 11 and reciprocates in the vertical direction by pneumatic pressure. .

In addition, the lower end of the cylinder housing 11 is provided with a mounting beam 14 so that the booster 15 can be connected.

The booster 15 fills the sealer through the sealer inlet PT1 provided on one side, and a booster housing 15b and the operating rod 12 in which a booster chamber BC is formed to discharge the sealer through the sealer outlet PT2 provided on the other side. ) And a booster rod 15a connected by a connector 12a, the booster rod 15a being driven in the booster chamber BC in the booster housing 15b according to the vertical movement of the piston 13. It is installed to move up and down with the rod 12.

In addition, a first electric proportional valve 20 is mounted at one side of the cylinder housing 11 of the booster cylinder 10 to supply operating pneumatic pressure into the booster cylinder 10 according to a control signal of a controller (not shown). do.

In addition, one side of the booster 15 is equipped with a first shut-off valve 30 to control the supply of the sealer supplied into the booster 15 by operating by pneumatic pressure. That is, the first blocking valve 30 is mounted at the sealer inlet PT1 side of the booster 15. A piston 31 is installed in the pneumatic chamber of the first shut-off valve 30 to open and close the sealer inlet PT1 to the valve spool 32 in accordance with the up and down piston movement, thereby introducing fluid introduced into the booster 15. Enforce.

In addition, the other side of the booster 15 is equipped with an application gun unit 40 for applying a sealer supplied from the booster 15.

Here, the spray gun unit 40 is mounted by the second shut-off valve 41 to correspond to the sealer outlet PT2 provided on the other side of the booster 15 by the valve spool 41a operated by pneumatic pressure. Discharge of the sealer supplied from the booster chamber BC through the sealer outlet PT2 was interrupted. That is, the sealer supplied to the coating gun unit 40 through the sealer outlet PT2 under the control of the second shutoff valve 41 passes through a slew device 43 and then through a nozzle (not shown). It is discharged to the coating object.

Furthermore, the booster cylinder 10 is coupled to the operation rod 12 through a connector 51 and moves up and down with the operation rod 12 in accordance with the reciprocating motion of the piston 13. A cylinder type position sensor 50 for detecting a position is provided to measure a change in position of the piston 13 over time.

However, in the conventional sealer coating constant flow rate supply device 1 as described above, since the movement space of the cylinder-type position sensor 50 is required, the operating rod 12 in the booster cylinder 10 and the booster rod in the booster 15 ( 15a) is provided separately, so that the overall device height should be more than twice the rod stroke distance.

That is, since the position sensor 50 is made of a cylinder type and is mounted on the side of the booster cylinder 10 by a separate connector 51, the position sensor 50 is located between the booster cylinder 10 and the booster 15. Additional space was required to move along the cylinder stroke.

Furthermore, since the cylinder type position sensor 50 has a relatively large weight, there is a problem that the weight of the entire apparatus also increases due to the mounting of the position sensor 50.

In addition, when the application gun unit 40 is attached to the other side of the booster 15 and there is a bend in the application object, as shown in FIG. 1B, the nozzle is more than necessary to avoid interference between the application object or the jig. There was also a drawback to be used to pull long.

Therefore, there is a problem in that unnecessary parts or space is required as a whole, not only to increase the size of the apparatus but also to costly economically.

The present invention has been made to solve the above-mentioned problems, and can be miniaturized by structurally eliminating unnecessary spaces and components, and can easily improve the fluid flow rate without using a long nozzle on a curved coating object. It is an object of the present invention to provide a constant flow rate supply device for applying a sealer provided to be coated.

The sealer coating constant flow rate supply device of the present invention for achieving the above object, in the sealer coating constant flow rate supply device for supplying the constant flow rate of the fluid using pneumatic pressure, the cylinder housing and the inside of the cylinder housing An air cylinder having a piston connected to an operation rod provided at the piston and reciprocating upward and downward by pneumatic pressure supplied through an air supply unit; A booster which is integrally coupled to the lower end of the cylinder housing and injects fluid into the sealer inlet provided at one side and discharges the fluid to the sealer outlet provided at the bottom; A shutoff valve coupled to one side of the booster to communicate with the sealer inlet and controlling a fluid supplied to the booster through the sealer inlet; And an application gun unit coupled to a lower end of the booster so as to communicate with the sealer outlet and discharging a fixed flow rate of the fluid introduced through the sealer outlet to the lower end.

Here, it is preferable that the booster further includes a band type heater surrounding the outer wall so that heat can be uniformly supplied, and a temperature sensor therein so as to directly measure the temperature of the fluid supplied from the sealer inlet. .

The booster may further include a flash type pressure sensor that measures a pressure of the fluid supplied from the sealer inlet and outputs a pressure signal.

Furthermore, the air cylinder is preferably further provided with a magnetic type position sensor mounted on the outer wall of the cylinder housing for measuring the position change value per hour of the piston in a non-contact manner and outputting a position signal.

In addition, the fixed flow rate supply device for applying the sealer of the present invention further includes a solenoid valve for an air cylinder for controlling the pneumatic pressure supplied to the air supply by receiving the position signal output from the position sensor or the pressure signal output from the pressure sensor. It is desirable to.

In addition, the coating gun unit is formed through the main body mounted on the lower end of the booster, the application gun piston reciprocating up and down by pneumatic pressure inside the main body, and the application gun piston and flows through the sealer outlet A needle for transporting the fluid to the lower side along an inner space, a receiving part formed at one lower side of the main body to receive and receive the fluid transferred along the needle, and the accommodating part according to a vertical reciprocating motion of the needle. When the connecting passage is opened is preferably provided with a spray nozzle for receiving the fluid received in the receiving portion and discharged to the lower end.

In addition, the needle, the needle hole is formed so that the fluid transported along the inner space can be supplied to the receiving portion, and the spool integrally mounted on the lower end of the needle to open and close the connection path communicating the receiving portion and the injection nozzle It is preferred to be provided.

As described above, the constant flow rate supply device for sealer coating of the present invention,

First, since the operating rod of the air cylinder is used as the booster rod, unnecessary stroke distance can be reduced, and the device can be miniaturized.

Second, since the applicator unit is mounted at the bottom of the booster, there is an advantage that the fluid can be easily applied to the curved object to be applied even when the spray nozzle is not pulled out for a long time.

Third, since the position sensor is mounted on the outer wall of the cylinder housing as a non-contact magnetic type, an additional space beyond the cylinder stroke is not required.

Fourth, since the temperature sensor is provided inside the booster to measure the fluid temperature directly, there is an advantage that it can respond sensitively to the temperature change of the fluid.

Fifth, the liquid contact portion of the pressure sensor provided in the booster has the advantage that it can prevent the clogging phenomenon.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be water and variations.

Hereinafter, with reference to FIGS. 2 to 6, a description will be given of a constant flow rate supply device for sealer coating according to an embodiment of the present invention.

2 is a schematic view showing a cross section of the sealer coating constant flow rate supply device according to an embodiment of the present invention, Figure 3 is a coupling structure of the air cylinder and the booster in the sealer coating constant flow rate supply device shown in FIG. 4 is a schematic view showing the structure of a shutoff valve in the sealer application constant flow rate supply device shown in FIG. 2, and FIG. 5 is a structure of the application gun unit in the sealer application constant flow rate supply device shown in FIG. 6 is a schematic view showing the use state of the process of applying to a curved application object using the sealer application constant flow rate supply device shown in FIG.

Referring to FIG. 2, the sealer coating constant flow rate supply device 100 according to an embodiment of the present invention includes an air cylinder 110, a booster 130, a shutoff valve 150, an application gun unit 170, and An air valve 190 for an air cylinder is provided.

The air cylinder 110 is mounted on the arm tip of a robot (not shown) to provide a driving force for driving the sealer coating constant flow rate supply device 100.

Referring to FIG. 3, the air cylinder 110 includes a piston 113 connected to an operating rod 115 in the cylinder housing 111 constituting the main body, so that the first air supply unit A1 or the second air cylinder 110 is connected to the air cylinder 110. The piston 113 reciprocates in the vertical direction by the pneumatic pressure supplied to the air supply unit A2, and the fluid stored inside the booster 130 by the pressure difference is applied to the application gun unit 170. Supplied by.

In addition, one side wall of the cylinder housing 111 is provided with a magnetic position sensor 119 of a non-contact measurement of the change in position of the piston 113 over time.

Unlike the position sensor of the cylinder type, the position sensor 119 detects the magnet mounted on the piston 113 in a non-contact manner and measures the position of the piston 113, so that the air cylinder 110 and the booster 130 are separated from each other. Since no space is required beyond the cylinder stroke, the air cylinder 110 and the booster 130 can be tightly coupled.

Therefore, the sealant coating constant flow rate supply device 100 according to the present invention does not need to separately include a cylinder rod and a booster rod, so that the entire equipment can be miniaturized, and instead of a cylinder type sensor having a relatively large weight, a lightweight magnetic It is also possible to reduce the weight of the entire equipment by mounting the type of sensor.

Next, the booster 130 integrally mounted on the lower portion of the air cylinder 110 will be described.

The booster 130 is in communication with the air cylinder 110 and integrally coupled to the operating rod 115 to reciprocate, the sealer inlet (PT1) by the driving force provided from the air cylinder 110 inside A booster chamber BC is provided to receive the fluid so as to discharge the fluid introduced through the sealer to the outlet PT2.

The booster chamber BC is supplied with a fluid to the sealer inlet PT1 provided at one side by the control of the shutoff valve 150, and receives the fluid accommodated by the pneumatic pressure provided from the air cylinder 110 at a lower end thereof. It is supplied to the application gun unit 170 through the sealer outlet (PT2) provided.

That is, the sealer outlet PT2 is provided at the lower end, so that the application gun unit 170 is coupled to the lower end, and the oil quantity of the fluid may be supplied through the lower end of the booster 130 rather than at one side.

In addition, the booster 130 is equipped with a band-type heater 131 on the outer surface so as to uniformly supply heat to the entire outer surface.

The heater 131 is made of a band type so as to surround the outer surface of the booster 130 to uniformly transfer heat to the booster chamber BC, thereby uniformly transferring heat to the fluid contained in the booster chamber BC. Can be.

In addition, the booster 130 is provided with a temperature sensor 133 in the booster chamber (BC) to directly measure the temperature of the fluid supplied from the sealer inlet (PT1).

The temperature sensor 133 is mounted inside the booster chamber BC to directly measure the temperature of the fluid, so that the temperature sensor 133 may be sensitive to a change in the temperature of the fluid, thereby measuring a more accurate temperature for the fluid in the booster chamber BC. can do.

Furthermore, the booster 130 includes a pressure sensor 135 inside the booster chamber BC to measure the pressure of the fluid supplied from the sealer inlet PT1.

In this case, unlike the general diaphragm method in which the hole is formed in the liquid contact part, the pressure sensor 135 may be formed in a flash type to prevent a blockage caused by fluid flowing into the hole.

In addition, the air valve for the solenoid valve 190 is the pressure discharged to the coating gun unit 170 through the sealer outlet (PT2) is the fluid contained in the booster chamber (BC) formed inside the booster 130 The air pressure supplied into the cylinder housing 111 is controlled through the first air supply part A1 and the second air supply part A2 so as to be controlled.

Therefore, the air valve for the solenoid valve 190 is a pressure signal measured from the pressure sensor 135 or a position signal indicating a change in position with time of the piston 113 measured by the position sensor 119 is input If it is determined whether the value is consistent with the target flow rate to maintain a constant discharge flow rate to meet the target flow rate.

That is, by controlling the amount of air supplied to the first air supply unit A1 and the second air supply unit A2, the discharge flow rate of the fluid contained in the booster chamber BC may be adjusted to be constant.

Further, the air valve solenoid valve 190 is a pressure regulating means, and preferably receives the pressure signal of the pressure sensor 135 and the position signal of the position sensor 119 and outputs it to an electropneumatic regulator. It is provided to automatically adjust the supply pressure to the air cylinder 110 as necessary by operating the pressure control means based on the pressure control signal to be made, and also to quickly and smoothly automatically correct the pressure fluctuations during the discharge of the liquid can do.

Hereinafter, referring to FIG. 4, the shutoff valve 150 is provided with a sealer supply part I through which fluid is introduced, and includes a shutoff valve piston 151 and a shutoff valve spool 153.

The shut-off valve piston 151 reciprocates by pneumatic pressure supplied to the third air supply part A3 and the fourth air supply part A4, and the shut-off valve piston by the reciprocating motion of the shut-off valve piston 151. When the shutoff valve spool 153 connected to 151 is opened and closed, the fluid supplied through the sealer supply part I is introduced into the sealer inlet PT1.

The fluid introduced into the sealer inlet PT1 is received into the booster chamber BC, and as described above, the fluid contained in the booster chamber BC is sealed by the air cylinder 110 by the pneumatic pressure of the sealer outlet. It is supplied to the application gun unit 170 through PT2.

Referring to FIG. 5, the application gun unit 170 includes an application gun piston 171, a needle 173, and an injection nozzle 175.

Here, the coating gun piston 171 is vertically reciprocated by pneumatic pressure inside the main body of the coating gun unit 170, the needle 173 is formed through the coating gun piston 171 in the vertical direction Then, the fluid introduced through the sealer outlet PT2 is transported downward along the inner space.

The fluid transferred along the needle 173 is supplied to a receiving part 177 formed at one lower side of the main body of the application gun unit 170, and the injection nozzle 175 moves up and down reciprocatingly of the needle 173. Accordingly, when the connection path communicating with the accommodation part 177 is opened, the fluid received in the accommodation part 177 is discharged to the lower end through the connection path.

Hereinafter, the path of the fluid flowing into the application gun unit 170 and discharged to the application object will be described.

When the fluid flow rate is supplied through the sealer outlet PT2, the fluid moves through the needle 173, and the application gun unit is formed through the needle hole 173a formed at one side of the needle 173. It is supplied to the receiving portion 177 formed in the inner lower end of the 170.

That is, the coating gun unit 170 is in communication with the sealer outlet PT2 provided at the lower end of the booster 130 to receive the fluid in the booster chamber BC through the sealer outlet PT2, and the booster ( The fluid supplied from 130 is transferred to the lower end through the needle 173.

In addition, the spray gun unit 170 is formed with a pneumatic chamber 171a supplied with a control pneumatic pressure to allow the spray gun piston 171 to reciprocate. The needle 173 is provided at the lower end of the application gun unit 170 across the pneumatic chamber 171a and the receiving part 177 from the sealer outlet PT2 formed at the upper end of the application gun unit 170. It is installed through the application gun piston 171 to reach the injection nozzle (175).

The fluid transferred to the lower end of the spray gun unit 170 through the needle 173 is formed at the inner lower end of the spray gun unit 170 through the needle hole 173a formed at one lower side of the needle 173. It is supplied to the receiving portion 177.

The lower end of the needle 173 is provided with a spool 173b formed integrally with the needle 173 to control the inflow of the fluid discharged to the injection nozzle 175, which is supplied to the receiving portion 177 The fluid is supplied to the injection nozzle 175 formed at the lower end of the application gun unit 170 by opening and closing the spool 173b by the reciprocating motion of the application gun piston 171. The injection nozzle 175 discharges the fixed flow rate of the supplied fluid to the application object.

Referring to FIG. 6, the nozzle length h2 of the sealer constant flow rate supply device 100 according to the exemplary embodiment of the present invention may be structurally short, and the air cylinder 110 and the booster ( 130 and the application gun unit 170 are formed in a line, so that even when the fluid is applied to the curved application object, the nozzle does not need to be formed long, and thus the conventional sealer coating oil supply device 1 shown in FIG. It is remarkably short compared with the nozzle length h1 of ().

As described above, the sealer constant flow rate supply device 100 of the present invention can structurally shorten the length of the nozzle, thereby minimizing the equipment, and can be more advantageously used when applying to the curved coating object. have.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Of course, various modifications and variations are possible within the scope of equivalent claims.

1A is a schematic diagram showing a cross section of a conventional oil quantity supply device for applying a sealer,

FIG. 1B is a state diagram showing a process of applying to a curved application object by using the constant flow rate supply device for applying the sealer shown in FIG. 1A,

Figure 2 is a schematic diagram showing the structure of a constant flow rate supply device for applying a sealer according to an embodiment of the present invention,

3 is a schematic view showing a coupling structure of an air cylinder and a booster in the constant flow rate supply device for applying the sealer shown in FIG. 2;

4 is a schematic view showing the structure of a shutoff valve in the sealer application constant flow rate supply device shown in FIG.

FIG. 5 is a schematic view showing the structure of the coating gun unit in the constant flow rate supply device for applying the sealer shown in FIG. 2;

FIG. 6 is a state diagram showing a process of applying to a curved object to be applied using the sealer coating constant flow rate supply device shown in FIG. 2.

<Description of the symbols for the main parts of the drawings>

100: constant flow rate discharge device for applying sealer

110: air cylinder 111: cylinder housing

113: Piston 115: Operating Rod

119 position sensor

130: booster 131: heater

133: temperature sensor 135: pressure sensor

150: shut-off valve 151: shut-off valve piston

153: isolation valve spool 170: application gun unit

171: application gun piston 171a: pneumatic chamber

173: Needle 173a: Needle Hall

173b: Spool 175: Injection nozzle

177: accommodating part 190: solenoid valve for air cylinder

Claims (7)

In the sealer coating constant flow rate supply device for supplying the fixed flow rate of the fluid using pneumatic pressure, An air cylinder having a cylinder housing and a piston connected to an operation rod provided in the cylinder housing and reciprocating upward and downward by pneumatic pressure supplied through an air supply unit; A booster which is integrally coupled to the lower end of the cylinder housing and injects fluid into the sealer inlet provided at one side and discharges the fluid to the sealer outlet provided at the bottom; A shutoff valve coupled to one side of the booster to communicate with the sealer inlet and controlling a fluid supplied to the booster through the sealer inlet; And And a coating gun unit coupled to a lower end of the booster so as to communicate with the sealer outlet and discharging the fixed amount of fluid introduced through the sealer outlet to the lower end. The method of claim 1, The booster is a band-type heater surrounding the outer wall so that heat can be uniformly supplied, and a sealer further comprising a temperature sensor therein so as to directly measure the temperature of the fluid supplied from the sealer inlet. Constant flow rate supply device for coating. The method of claim 1, The booster is a constant flow supply device for applying a sealer, characterized in that further provided with a flash type pressure sensor for measuring the pressure of the fluid supplied from the sealer inlet to output a pressure signal. The method of claim 3, wherein The air cylinder is mounted on the outer wall of the cylinder housing, the magnetic type position supply for supplying a sealer, characterized in that the magnetic type position sensor further outputs a position signal by measuring the position change value per hour of the piston in a non-contact manner Device. The method of claim 4, wherein And a solenoid valve for air cylinder for controlling the pneumatic pressure supplied to the air supply unit by receiving the position signal output from the position sensor or the pressure signal output from the pressure sensor. The method of claim 1, The coating gun unit, A main body mounted at the bottom of the booster, An application gun piston vertically reciprocating by pneumatic pressure inside the main body, A needle formed through the applicator gun piston to transfer the fluid introduced through the sealer outlet to the lower side along an inner space; An accommodation part formed at one lower side of the main body to receive and receive the fluid transferred along the needle; And a spray nozzle which receives the fluid contained in the accommodating part and discharges it to the lower side when the connection path communicating with the accommodating part is opened according to the up and down reciprocating motion of the needle. The method of claim 6, The needle is provided with a needle hole formed so that the fluid transferred along the inner space can be supplied to the receiving portion, and a spool integrally mounted at the lower end of the needle to open and close a connection path between the receiving portion and the injection nozzle. A constant flow rate supply device for applying a sealer, characterized in that.

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