KR20070021009A - A sealer spraying system - Google Patents

Abstract

The present invention is to be mounted on the tip of the robot arm to set the sealer, the first pressure control in the regulator unit quantitatively, and then to apply the sealer at a constant pressure again through the applicator gun unit, by using the signal of the encoder Provided is a sealer quantitative swirl coating system including a sealer quantitative swirl supply unit so that an operator can recognize information such as the cumulative flow rate, the instantaneous flow rate, the coating pressure and the presence or absence of the sealer.

Sealer Swirl Supply Unit, Booster, Booster Cylinder, Encoder, Swirl Tip

Description

Sealer metering swirl application system {A SEALER SPRAYING SYSTEM}

1 is an overall configuration diagram of a sealer quantitative swirl application system according to an embodiment of the present invention.

2 is a partial configuration diagram showing the line connection relationship between the sealer metering swirl supply unit and the regulator unit applied to the embodiment of the present invention.

3 is an enlarged cross-sectional view of a sealer metering swirl supply unit applied to the portion A of FIG.

Figure 4 is an enlarged cross-sectional view of the swirl tip means applied to the coating gun unit of the present invention.

FIG. 5 is a perspective view of a swirl tip of the swirl tip means of FIG. 3 and a bottom view thereof; FIG.

6 and 7 is a step-by-step operating state diagram of the sealer metering swirl supply unit applied to the embodiment of the present invention.

8 is an overall configuration diagram of a sealer quantitative swirl coating system according to the prior art.

The present invention relates to a sealer quantitative swirl application system, and more particularly, a sealer quantitative swirl so as to be mounted on the robot arm tip to set a quantitatively set sealer in which the pressure control is first performed in the regulator unit and apply the sealer at a constant pressure again. A sealer metering swirl application system comprising a supply unit.

In general, automobile production lines use sealer quantitative swirl coating systems for the purpose of sound insulation, rust prevention, body reinforcement, and sealing.

The schematic principle of this sealer metering swirl application system is that when the sealer pumped from the sealer pump reaches the regulator unit which is operated pneumatically through the pipe, the regulator unit regulates the sealer to a constant pressure to the spray gun unit through the hose. Transfer it.

That is, the sealer that reaches the applicator unit is applied along a predetermined path according to the robot's behavior.

FIG. 8 is an overall configuration diagram of a sealer coating system described in Korean Patent Registration No. 482591. Looking at the configuration thereof as an example of a sealer coating system according to the related art, the pump unit 10 is pumped by the filter unit 20. The sealer, which has filtered foreign matters, is supplied to the spray unit 40, that is, the spray gun unit through the sealer hose 31 while the supply pressure of the fixed quantity discharge unit 30, that is, the regulator unit, is adjusted along the sealer pipe. It can be seen that the control unit 50, which operates to be applied on the desired material, controls the operation of the entire system.

In addition, the patent of the Republic of Korea Patent Registration No. 482591 gives specific technical characteristics to the quantitative discharging unit 30, which will be described in detail as follows.

That is, the conventional metered discharge unit 30 is connected to the filter 21 and the sealer pipe through the suction end is controlled by a control pneumatic to adjust the supply pressure of the sealer pumped from the pumping unit 10 to the set pressure The flow control valve 33 is provided.

In addition, the flow rate control valve 33 is connected to the suction end of the shut-off valve 39 through the sealer pipe, the discharge end of the flow control valve 33 is sprayed through the sealer hose (31) It is connected to the sealer gun 41 of the unit 40 and controlled on-off by the control unit 50.

In addition, the flow control valve 33 is connected to the electro-pneumatic valve 45 through a pneumatic pipe, the electro-pneumatic valve 45 is the flow control valve by precisely controlling the line air pressure through the PID control of the control unit 50 The control pneumatic is supplied to (33).

In addition, on the pneumatic pipe line for supplying the line air pressure to the solenoid valve 45, the precision pneumatic regulator 51 is configured to control and supply the line air pressure supplied to the solenoid valve 45 at a constant pressure. have.

However, in the conventional sealer coating system as described above, the external influence during the pressure of the sealer, that is, the pulsation caused by the pressure of the sealer pump 13 and the pulsation caused by pneumatic pressure acting on the metered discharge unit 30, and the metered discharge unit ( Due to the disadvantages of the long length of the sealer hose 31 from 30) to the spray unit 40, it is difficult to control the coating of a certain amount of sealer accurately, and the coating pattern of the sealer is not uniform. It acts as a problem of degrading quality.

In addition, when the sealer is applied, there is a problem in that there is no check function for the presence or absence of the coating, which also serves as a factor of poor quality.

Therefore, the present invention has been invented to solve the problems of the prior art as described above, the object of the present invention is mounted on the tip of the robot arm is set to the quantitatively set the sealer made the pressure control in the regulator unit first, The sealer can be applied at a constant pressure again through the gun unit, and the sealer quantitative swirl supply unit allows the operator to recognize information such as the cumulative flow rate, instantaneous flow rate, coating pressure and whether the sealant is applied using the encoder signal. It is to provide a sealer quantitative swirl coating system comprising a.

In addition, another object of the present invention is to provide a sealer quantitative swirl coating system to improve the coating quality of the sealer by forming a swirl tip means on the coating gun unit so that the coating pattern of the sealer is uniformly formed as a swirl pattern. will be.

In the sealer metering swirl application system of the present invention for realizing the object as described above, the sealer pumped by the sealer pump is supplied to the application gun through the sealer hose with the supply pressure of the regulator unit along the sealer pipe being regulated. In the sealer fixed-quantity swirl coating system which operates to be applied on the material to be worked according to the behavior of, and comprises a sealer controller for controlling the operation of the entire system,

A booster cylinder mounted to the arm tip of the robot and operated by pneumatic pressure; A booster rod connected to a tip of an operating rod of the booster cylinder and installed through a mounting beam in the booster cylinder, and having a booster chamber connected to a sealer inlet and a sealer outlet; A first electric proportional valve mounted on one side of the booster cylinder to supply operating air pressure to the booster cylinder according to a control signal; The encoder sensor is mounted on the other side of the booster cylinder and connects the timing belt for rotating the internal tone wheel and the operation rod of the booster cylinder with two interlocking rods, so that the encoder sensor pulses the rotation of the tone circle according to the forward and backward operation of the booster cylinder. An encoder unit for outputting a signal; A first shut-off valve mounted on one side of the booster and operated by pneumatic pressure to control a supply of the sealer supplied from the regulator unit to the booster through the sealer hose; And a sealer fixed-quantity swirl supply unit, which is mounted on the lower side of the other side of the booster and configured as an applicator gun unit for applying a sealer supplied from the booster.

The booster cylinder is made of a piston that is connected to the operating rod inside the cylinder housing, characterized in that made of a pneumatic cylinder to make the pneumatic pressure.

The booster is connected to a booster cylinder through the mounting beam, and a booster housing filling a sealer through a sealer inlet and discharging the booster chamber through the sealer outlet to the spray gun unit; A booster rod which is installed to move forward and backward along the booster chamber of the booster housing, and an outer end thereof is connected to an operating rod of the booster cylinder; And a seal ring installed by a seal nut to maintain airtightness while being sandwiched between the booster housing and the booster rod.

The encoder unit includes an encoder housing fixed to the other side of the booster cylinder through a bracket; A tone wheel rotatably installed inside the upper portion of the encoder housing; A timing belt connecting the pulleys connected to the rotary shaft of the tone wheel and the pulleys installed at a predetermined spaced distance thereto; A vertical linkage rod having an upper end connected to the timing belt; A horizontal linkage rod connecting a lower end of the vertical linkage rod and one side of an operation rod of the booster cylinder; And an encoder sensor mounted on the upper one side of the encoder housing to correspond to the tone wheel and outputting a pulse signal according to the rotation of the tone wheel to the sealer controller.

The first shut-off valve is mounted on the sealer inlet side of the booster, and forms a sealer inlet chamber connected to the sealer hose to receive the sealer from the regulator unit, and a pneumatic chamber to which the control air pressure is supplied to the rear side of the booster. Forming a valve body; A piston installed in the pneumatic chamber of the valve body; It is installed across the sealer inlet chamber and the pneumatic chamber in the valve body, one end is connected to the piston, the other end is a valve spool disposed to open and close the sealer inlet of the booster.

The first shut-off valve is mounted on one side of the panel of the regulator unit, and is preferably connected to a solenoid valve controlled by the sealer controller and connected to a pneumatic line and supplied with a control pneumatic line.

The dispensing gun unit is mounted to correspond to a sealer outlet connected to the lower side of the booster and is operated by pneumatic pressure to control the discharge of the sealer supplied from the booster chamber through the sealer outlet; And a swirl tip means mounted on the discharge end of the second shut-off valve and applying a sealer in a swirl type on a material by a spraying air injected into the vortex in a sealer supplied according to the operation of the second shut-off valve. It is done.

The second shut-off valve is mounted on the sealer outlet of the booster, the valve body to form a sealer discharge chamber to receive the sealer from the booster therein, and to form a pneumatic chamber through which the control pneumatic pressure is supplied; A piston installed in the pneumatic chamber of the valve body; And a valve spool installed across the sealer discharge chamber and the pneumatic chamber in the valve body, one end of which is connected to the piston, and the other end of which is arranged to open and close the sealer applicator of the swirl tip means. .

The second shut-off valve is mounted on one side of the panel of the regulator unit, and is preferably connected to a solenoid valve controlled by the sealer controller and connected to a pneumatic line and supplied with a control pneumatic line.

The swirl tip means is coupled to the discharge end of the second shut-off valve, the sealer guide body for forming a sealer guide hole in which the valve spool is disposed; An air guide which is fastened to the outside of the sealer guide and forms an air guide with the sealer guide, and on one side forms an air supply port for receiving a predetermined pneumatic pressure; It is fastened to the front end of the air guide, a sealer discharge port corresponding to the sealer guide port is formed in the center, a plurality of air injection holes are arranged at regular intervals corresponding to the air guide port around the sealer discharge port, Swirl tip is formed so as to be deflected toward the sealer discharge port is configured to inject vortex-like air;

The air guide is separately mounted on one side of the panel of the regulator unit and is controlled by the sealer controller to be connected to a second electric proportional valve that supplies and shuts off the air by regulating the line air pressure to a constant pressure and is supplied with a pneumatic line to receive injection air. It is characterized by.

The swirl tip is preferably five air injection holes are formed at a predetermined interval.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration diagram of a sealer quantitative swirl application system according to an embodiment of the present invention.

The overall configuration of the sealer metering swirl application system according to an embodiment of the present invention is the pump unit 110 including the sealer pump 101, the filter 120, the regulator unit 130, the sealer metering swirl supply unit 140 And a sealer hose 151 and a sealer pipe 153 connecting the sealer metering swirl supply unit 140, the regulator unit 130, and the sealer pump 101, a sealer controller 150 for controlling the system, and a robot. 161 and a robot controller 160 for controlling the robot 161.

The pump unit 110 is an auxiliary mechanism for pumping the sealer in the drum, is mounted on the horizontal floor and has two ram cylinders 103 on both sides, the upper plate for connecting the ram cylinder 103 The sealer pump 101 is installed at the 102, and the sealer pump shaft 104 is connected to the lower side of the sealer pump 101 to move up and down according to the operation of the sealer pump 101.

The lower pump unit 105 is installed at the lower end of the sealer pump shaft 104, and the inductor plate 106 is installed at the lower end of the low pump unit 105 to obtain a high sealer supply pressure.

The filter 120 is connected to the sealer pump 101 through the sealer pipe 153 in a cylindrical shape to filter foreign matter in the sealer introduced.

And the regulator unit 130, as shown in detail in Figure 2, the regulator valve (RV) is connected to the filter 120 and the sealer pipe 107 through the suction end, this regulator valve (RV) ) Is controlled by the control pneumatic to adjust the supply pressure of the sealer pumped from the pumping unit 110 to the set pressure.

The regulator valve RV has a discharge end thereof connected to a suction end of the shutoff valve SOV through the sealer pipe 108, and the shutoff valve SOV has a discharge end thereof connected through the sealer hose 151. It is connected to one side of the sealer metering swirl supply unit 140 is controlled on-off by the control pneumatic pressure supplied from the first solenoid valve (SV1) that operates in accordance with the signal of the sealer controller 150.

And a second solenoid valve (SV2) for supplying a control air pressure to the sealer metering swirl supply unit 140 adjacent to the first solenoid valve (SV1) on the lower side on the panel (P) of the regulator unit 130 And a third solenoid valve SV3 is further provided to operate by a control signal from the sealer controller 150.

In addition, a second electric proportional valve EV2 for supplying a predetermined pressure injection air to the sealer fixed amount swirl supply unit 140 is located at the other lower side on the panel P of the regulator unit 130. It is further provided to operate by the control signal.

In addition, the sealer fixed amount swirl supply unit 140 is mounted at the tip of the robot arm 163, and a detailed configuration of the sealer fixed amount swirl supply unit 140 will be described with reference to FIGS. 2 and 3.

That is, the sealer metering swirl supply unit 140 is mounted to the booster cylinder 141 at the tip of the arm 163 of the robot 161. The booster cylinder 141 is preferably made of a pneumatic cylinder composed of a piston 144 connected to the operation rod 143 in the cylinder housing 142 to make the pneumatic pressure.

In addition, a booster 146 is installed in the cylinder housing 142 of the booster cylinder 141 through a mounting beam 145. At this time, the operation rod 143 of the booster cylinder 141 has a tip of the booster rod. 147 is connected.

The booster 146 is a booster housing 148 and the booster rod 147 to form a booster chamber BC for filling the sealer through the sealer inlet PT1 and discharging it through the sealer outlet PT2. The booster rod 147 is installed to move back and forth along the booster chamber BC of the booster housing 148. That is, the outer end of the booster rod 147 is connected to the operation rod 143 of the booster cylinder 141 through the connector 149.

In addition, a seal ring 172 is installed by the seal nut 171 to maintain airtightness between the booster housing 148 and the booster rod 147.

In addition, a first electric proportional valve EV1 is mounted at one side of the cylinder housing 142 of the booster cylinder 141 to supply operating air pressure into the booster cylinder 141 according to a control signal.

That is, the first electric proportion proportional valve EV1 varies the internal flow path according to the control signal of the sealer controller 150 to control the line air pressure to a constant air pressure and supply it to the booster cylinder 141.

In addition, an encoder unit EU is mounted on the other side of the cylinder housing 142 of the booster cylinder 141.

The encoder unit EU connects the timing belt 174 for rotating the internal tone wheel 173 and the operation rod 143 of the booster cylinder 141 with two interlocking rods 175 and 176 to boost the cylinder 141. The encoder sensor 177 outputs a pulse signal to the sealer controller 150 for the rotation of the tone circle 173 according to the forward and backward operation of the "

That is, in the specific configuration of the encoder unit EU, the encoder housing 179 is fixedly mounted to the other side of the cylinder housing 142 of the booster cylinder 141 through the bracket 178.

The tone wheel 173 is rotatably installed at an upper inner side of the encoder housing 179, and a pulley 181 is connected to a rotation shaft of the tone wheel 173, and the pulley 182 is also located at a predetermined interval. ), Both pulleys (181, 182) are connected by a timing belt (174).

In addition, a vertical linkage rod 175 is connected to one side of the timing belt 174 through an upper end thereof, and a lower end of the vertical linkage rod 175 and one side of the operation rod 143 of the booster cylinder 141 are horizontal. Interlock rod 176 is configured to connect.

In addition, an encoder sensor 177 is mounted on the upper one side of the encoder housing 179 to correspond to the tone wheel 173 so as to output a pulse signal according to the rotation of the tone wheel 173 to the sealer controller 150. It is composed.

In addition, a first shut-off valve CV1 for controlling a supply of a sealer supplied from the regulator unit 130 to the booster 146 through the sealer hose 151 by operating by pneumatic pressure at one side of the booster housing 148. Is fitted.

That is, the first shutoff valve CV1 has a valve body 183 mounted on the sealer inlet PT1 side of the booster housing 148, and the shutoff of the regulator unit 130 inside the valve body 183. A sealer inlet chamber 184 connected to the sealer hose 151 is formed to receive the sealer from the off valve SOV, and a pneumatic chamber 185 to which the control pneumatic pressure is supplied is formed at a rear side thereof.

A piston 186 is installed in the pneumatic chamber 185 of the valve body 183, and a valve spool (cross) between the sealer inlet chamber 184 and the pneumatic chamber 185 in the valve body 183. 187) is installed.

Here, one end of the valve spool 187 is connected to the piston 186, and the other end thereof is disposed to open and close the sealer inlet PT1 of the booster housing 148.

In addition, the first shut-off valve CV1 is mounted on one side of the panel P of the regulator unit 130 and is controlled by the sealer controller 150 to supply and shut off line air pressure. ) And pneumatic lines are supplied to control air pressure.

And the other side lower portion of the booster housing 148 is equipped with a spray gun unit (SU) for applying a sealer supplied from the booster 146, looks at the spray gun unit (SU) in detail.

That is, the spray gun unit SU is equipped with a second shut-off valve CV2 so as to correspond to a sealer outlet PT2 connected to the other side lower portion of the booster housing 148 to operate by pneumatic pressure booster chamber BC. ) Discharges the sealer supplied through the sealer outlet PT2, and a swirl tip means STU is attached to the discharge end 191 of the second shut-off valve CV2 so that the second shut-off valve CV2 The sealer supplied according to the operation is configured to apply the sealer in the swirl type on the material by the injection air sprayed in the vortex form.

Here, the second shutoff valve CV2 is mounted with a valve body 192 at the sealer outlet PT2 side of the booster housing 148, and is sealed from the booster 146 inside the valve body 192. The sealer discharge chamber 193 is formed to receive the air, and a pneumatic chamber 194 to which the control air pressure is supplied is formed at the rear side thereof.

In addition, a piston 195 is installed in the pneumatic chamber 194 of the valve body 192, and the valve spool crosses the sealer discharge chamber 193 and the pneumatic chamber 194 inside the valve body 192. 196 is installed. At this time, one end of the valve spool 196 is connected to the piston 195, and the other end thereof is disposed to open and close the sealer applicator PT3 (see FIG. 4) of the swirl tip means STU.

The second shut-off valve CV2 is mounted on one side of the panel P of the regulator unit 130 and is controlled by the sealer controller 150 to supply and shut off line air pressure. ) Is connected to the pneumatic line and is supplied with the control pneumatic.

And the swirl tip means (STU), as shown in Figure 4, the sealer guide member 201 is fastened to the discharge end 191 of the second shut-off valve CV2, the sealer guide member 201 The sealer guide hole 202 in which the valve spool 196 is disposed is formed.

An air guide 203 is fastened to an outer side of the sealer guide 201, and the air guide 203 forms an air guide 204 between the sealer guide 201 and one side of the sealer guide 201. It is configured by forming an air supply port (PT4) receiving a constant pneumatic pressure.

A swirl tip 205 is fastened to the tip of the air guide 203. The swirl tip 205 is cylindrical, as shown in FIG. 5, and its bottom surface is closed, and the bottom is closed. The surface has a constant thickness and forms the bottom portion 280. The cylindrical swirl tip 205 also has an upper surface open to form a cavity 288 therein, and an inner surface 210 of which has a threaded portion 214 which is an engagement portion for engaging with the air guide 203. ) Is being formed.

A discharge port PT3 corresponding to the sealer guide hole 202 is formed to go straight through the bottom portion 280 at the center of the bottom portion 280, and the bottom portion is formed around the discharge hole PT3 at the bottom portion 280. A plurality of air injection holes PT5 inclined toward the discharge port PT3 are formed from the inner surface 280a of the bottom portion 280 to the outer surface 280b of the bottom portion as formed through the portion 280. In the present embodiment, five air injection ports PT5 are disposed at regular intervals corresponding to the air guide holes 204.

In addition, the air guide 203 has an air supply port PT4 separately mounted on one side of the panel P of the regulator unit 130 and controlled by the sealer controller 150 to adjust the line air pressure to a constant pressure. It is connected to the second electric proportional valve (EV2) and the pneumatic line to supply and shut off so that the injection air is supplied.

Therefore, the operation of the sealer quantitative swirl application system having the configuration as described above will be described with reference to FIGS. 3, 6, and 7.

First, as shown in FIG. 3, the sealer controller 150 controls the first solenoid valve SV1, the second solenoid valve SV2, and the third solenoid valve SV3 to close the shut-off valve SOV. And the sealer pump 101 of the pump unit 110 by driving the sealer pump 101 of the pump unit 110 with the second shutoff valve CV2 and the first shutoff valve CV1 turned off (that is, closed). Pump.

Accordingly, the sealer inside the drum is supplied to the regulator valve RV in a state in which foreign substances are removed through the sealer pipe 153 through the filter 120 and controlled at a constant pressure.

At this time, when the material is finished loading on the jig 100 and the start point of work, the sealer controller 150, as shown in Figure 6, the first solenoid valve SV1 and the third solenoid valve By controlling SV3, the shut-off valve SOV and the first shut-off valve CV1 are turned on (i.e., open).

Then, the sealer adjusted to a constant pressure from the regulator valve RV passes through the sealer hose 151 and the first shut-off valve CV1 from the shut-off valve SOV to the booster chamber BC inside the booster 146. It is filled.

As such, when the sealer is filled in the booster chamber BC, as shown in FIG. 7, the sealer controller 150 may include the first solenoid valve SV1 and the third solenoid valve SV3. To control the shut-off valve SOV and the first shut-off valve CV1 again to OFF.

In this state, the sealer controller 150 outputs a signal to the robot controller 160 to operate the robot 161, and simultaneously operates the first electric proportional valve EV1 and the second solenoid valve SV2. By controlling the booster cylinder 141, the line air pressure is precisely controlled to be supplied at a constant pressure working air pressure, and the second shutoff valve CV2 is controlled to be ON to operate the sealer to be discharged.

At this time, the sealer controller 150 outputs a control signal to the second electric proportional valve EV2 almost simultaneously to precisely control the line air pressure, thereby forming a constant air pressure on the air guide 203 of the swirl tip means STU. Supply to the injection air through the air supply port (PT4).

Therefore, the sealer filled in the booster chamber BC of a certain volume by the control of the sealer controller 150 may be sealed by the sealer outlet opening according to the entry amount of the booster rod 147 proceeding by the operation of the booster cylinder 141. The sealer is moved to the sealer discharge chamber 193 of the second shut-off valve CV2 through PT2, and the valve spool 196 is pulled by the ON control of the second shut-off valve CV2. The sealer inside the discharge chamber 193 is discharged to the sealer discharge port PT3 of the swirl tip 205 along the sealer guide port 202 of the sealer guide body 201.

At this time, the sealer discharged through the sealer discharge port PT3 is supplied along the air supply port PT4 and the air guide port 204 of the air guide body 203 to provide five air injection holes on the swirl tip 205. When applied to the material 300 by the vortex formed by the injection air injected into the PT5 is applied in a swirl type circle.

That is, the sealer quantitative swirl supply unit 140 is mounted on the tip of the arm 163 of the robot 161 and according to the behavior of the robot 161, the sealer of the quantitative constant is fixed on the material 300 in the swirl type. It will be applied in a pattern.

Meanwhile, the encoder unit EU may include a timing belt connected to the operation rod 143 of the booster cylinder 141 through a horizontal linkage rod 176 and a vertical linkage rod 175 according to the operation of the booster cylinder 141. When the 174 rotates the tone wheel 173, the encoder sensor 177 detects this and outputs a pulse signal to the sealer controller 150. At this time, the sealer controller 150 analyzes the applied pulse signal. Through the display (not shown) so that the operator can recognize information such as the accumulated flow rate of the sealer remaining in the booster 146 and the instantaneous flow rate applied, and the application pressure and presence or absence of the sealer applied through the swirl tip unit. Will be displayed.

According to the sealer fixed-quantity swirl coating system according to the present invention as described above, after setting the sealer to the first pressure control in the regulator unit through the sealer fixed-quantity swirl supply unit mounted on the tip of the robot arm to the fixed amount, the coating gun The sealer can be applied at a constant pressure again through the unit, so that the sealer can be accurately applied along a predetermined pattern.

In addition, the operator can recognize information such as the accumulated flow rate, instantaneous flow rate, coating pressure and application of the sealer by using the encoder signal. A swirl tip means is configured on the coating gun unit to swirl the coating pattern of the sealer. It is effective to improve the coating quality of the sealer by being formed uniformly.

As a result, the external influences of the conventional sealing process of the sealer, that is, the pulsation caused by the pressure of the sealer pump and the pulsation caused by the pneumatic pressure applied to the metering unit, and the length of the sealer hose from the metering unit to the spray unit are long. Due to the disadvantages, it is possible to solve a problem that it is difficult to apply a certain amount of sealer accurately, and to maintain a uniform coating pattern of the sealer, thereby minimizing the factors of poor quality.

Claims (2)

Cylindrical shape, the bottom surface is closed to form a bottom having a thickness, the top surface is open to form a cavity therein, the inner surface forming the cavity is formed with a coupling portion, the bottom portion from the center to the bottom A swirl tip is formed through which the discharge port penetrates straight and penetrates the bottom portion, and a plurality of air inlets are inclined toward the discharge port from the inner surface to the outer surface of the bottom portion. The method of claim 1, Swivel tip, characterized in that the engaging portion formed on the inner surface of the cavity portion is a screw portion.

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