KR20180098993A - Primer feeder for window glass attachment of automobile - Google Patents

Abstract

The present invention relates to a primer supply device for a window glass of an automobile, which absorbs shock caused by bending and unevenness of a coated surface, thereby making it possible to uniformly degrade a primer and improving accuracy of primer residual amount measurement.
The present invention relates to a primer tank (100) for accommodating a primer for attaching a window glass of an automobile; A mounting part (200) mounted on the articulated robot for measuring a change in weight of the primer tank and measuring an amount of the primer; An agitation driving unit 300 for agitating a primer inside the primer tank; A discharge unit 400 having a damping means 405 for absorbing and absorbing vibrations generated during the movement of the nozzle by the articulated robot while discharging the primer to the nozzle 406a only by an amount necessary for applying the primer, .
According to the present invention, since the primer residual amount measurement is performed more accurately, it is possible to prevent the defective attachment of the window glass due to the sudden depletion of the primer, and to absorb the impact caused by the bending and unevenness of the applied surface, So that the work of attaching the window glass can be efficiently and efficiently performed.

Description

Technical Field [0001] The present invention relates to a primer feeder for a window glass of a vehicle,

The present invention relates to a primer supply device for a window glass of an automobile, and more particularly, to a primer supply device for an automobile which is capable of uniformly deteriorating the primer by absorbing the bending and unevenness of the applied surface, To a primer supply device for attaching a window glass.

In order to attach the window glass to the vehicle body in the automobile production line, an adhesive primer is applied along the edges of the window glass attached to the front and rear surfaces of the vehicle body, and then the adhesive surface of the window glass, to which the adhesive primer is applied, And the window glass is adhered to the mounting surface with a predetermined pressure.

Such attachment of a window glass of an automobile as described above requires very precise attachment technique because leakage prevention and airtightness are essential.

Therefore, in the past, it has been done to attach window glass by a skilled worker who has a long history. However, due to the rapid development of the automobile industry, the competition of automobile manufacturers has become more intense and factory automation for producing more high- In order to increase the rate of factory automation, domestic automobile companies have been increasing the use rate of articulated robots for automation of major production lines. In addition, automobile window glass attachment is also being automated by articulated robots to be.

That is, when a primer supplying device for attaching a window having a nozzle for discharging a primer so as to automatically apply a primer along the edge of a window glass is mounted on the articulated robot and the body enters the production line, The attachment of the window glass is carried out in such a manner that the primer is precisely applied along the edge of the window glass and the other articulated robot picks up the window glass by the vacuum suction method and then attaches the picked up window glass to the window attachment surface of the vehicle body. .

In order to attach the window glass by the articulated robot as described above, a primer supplying device for attaching the window for precisely and automatically applying the primer along the edge of the window glass is indispensable.

Japanese Patent Application Laid-Open No. 10-1152043 discloses a stirring tank for containing a primer as shown in FIG. 1; A lower plate coupled to an upper portion of the stirring tank; A stirring shaft installed on the lower plate with a stirring impeller so as to stir the primer in the stirring tank; A driving means fixed to the lower plate for transmitting power to the stirring shaft by the power transmitting means; An upper plate held directly above the lower plate; A mounting hole provided at an upper portion of the upper plate so as to be mountable with the articulated robot; A load cell is further provided between the upper plate and the mounting hole to measure a change in the weight of the highest water level (HL) of the stirring tank filled with the primer and the lowest water level (LL) of the stirring tank filled with the primer, A primer supply device for attaching a window so as to be able to recognize the primer; Wherein the stirring tank is provided with a charging port for injecting a cleaning agent into the stirring tank after the use of the primer is completed so that the primer can be charged, The driving means measures the change in torque of the stirring shaft during low-speed stirring, which is performed in order to prevent hardening at the time of normal stirring for use of the primer or temporary work stoppage by using the servo motor, and then the applied torque is applied to the controller to recognize the hardening state of the primer To know when to exchange; And a metering valve is further provided on the discharge port below the stirring tank so as to continuously supply the primer to the nozzle only by an amount necessary for application.

Japanese Patent Application Laid-Open No. 10-2011-0071186 Patent Registration No. 10-1152043

In the conventional primer supplying device for window mounting as described above, a certain amount of primer is stored in a stirring tank in which an agitation impeller driven by a driving means is installed, and a certain amount of primer is automatically discharged through the outlet of the stirring tank When the weight of the stirring tank is reduced due to the depletion of the primer stored in the stirring tank by providing a load cell for measuring the weight change of the stirring tank, it is measured through the load cell so that the primer can be replenished to the stirring tank, So that the supply and discharge of the exhaust gas can be efficiently performed.

However, in the conventional primer supply device for window mounting, a load cell for measuring a change in the weight of the stirring tank due to an external impact generated during the application of the primer along the edge of the window glass frequently malfunctions, The remaining amount of the primer can not be accurately measured.

That is, in the prior art primer supply device for attaching a window, a load cell installed for measuring a change in weight of a stirring tank is installed between a mounting hole for mounting the robot with the articulated robot and a window plate provided between the upper plate and the window plate, The nozzle for spraying the primer moves in close contact with the edge of the window glass in the process of discharging the primer while applying along the edge of the window glass.

However, in most of the currently used automotive window glasses, a hot wire is installed on the inner surface of the window glass to remove the frost and moisture. When the nozzle for final injection of the primer passes through the hot wire, The micro-impact is repetitively repeated. As a result, the load cell malfunctions and the weight change of the stirring tank filled with the primer can not be accurately measured. Thus, the primer is applied to the window glass while missing the replenishment timing of the primer In addition, when the primer is exhausted during the application of the primer to the window glass, the multi-joint robot can not accurately measure the application state of the primer, so that the primer is completely coated There is a problem that the adhesion of the window glass is caused by attaching the window glass to the body.

In addition, a window glass of an automobile is manufactured to have a certain curvature in order to minimize the air resistance during running of the vehicle. In addition, the curvature of the window glass varies depending on the type of the vehicle. In the case of an automobile for high- The curvature of the window glass is generally increased.

However, in the prior art window mounting primer supplying device, the nozzle for finally spraying the primer is attached to the articulated robot, and the primer is applied at a constant pressure while moving in a state in which the nozzle is closely attached to the application surface of the window glass by the articulated robot The primer is applied with a uniform thickness and width on a relatively flat application surface having a small curvature of the window glass, but in the case of a window glass having a large curvature, the articulated robot can not flexibly adapt to the large curvature of the window glass, There is a problem that repetitive moving impact occurs in the process of closely moving along the graphic surface of the window glass, so that the primer is not applied with a uniform thickness and width, and an excessive amount of primer is applied in excess of the optimal application amount .

There is a problem in that the manufacturing cost is increased due to the waste of the primer when the excessive amount of primer is applied unnecessarily as described above. In addition, when the window glass coated with excessive amount of primer is attached to the vehicle body, There is a disadvantage in that the productivity is lowered through unnecessary additional work such as a primer leaking out to leak primer to be removed.

A primer supply device for a window glass of an automobile according to the present invention is a primer supply device for a window glass of an automobile. The primer supply device comprises a injection port (101) A primer tank (100) for receiving a primer for attaching a window glass; A mounting part 200 mounted on the articulated robot for applying the primer and measuring the amount of primer inside the primer tank 100 by measuring the weight change of the primer tank 100; An agitation driving part 300 for agitating a primer contained in the primer tank 100; A damping which absorbs vibration generated during the movement of the nozzle 406a by the articulated robot while allowing the primer discharged through the discharge port 102 to be continuously discharged to the nozzle 406a only by an amount necessary for application, And a discharging unit 400 having means 405. As shown in FIG.

The primer tank 100 includes a flange 104 formed at an opening at an upper portion of the primer tank 100 so that the cover plate 105 can be disassembled and assembled to the flange 104; And a transparent level gauge 106 for confirming the remaining amount of the primer is provided between the connection portions 103 by forming connection portions 103 on the upper and lower walls of the main wall.

A bracket 108 is detachably attached to the connection portion 103 of the primer tank 100 and a level sensor 107 is installed to vertically position the guide slot 108a formed in the bracket 108 So that a reference amount of the primer inside the level gauge 106 can be sensed.

The mounting portion 200 includes a clamping portion 201 radially installed at an upper portion of the primer tank 100; An upper plate 202 installed on the upper portion of the clamping unit 201 to be mounted on the articulated robot; And a load cell 203 installed between the upper portion of the primer tank 100 and the lower portion of the upper plate 202 to measure the change in weight of the primer tank 100 and measure the exhaustion of the primer .

The stirring driving unit 300 includes a stirring shaft 301 having a stirring blade 301a for stirring the primer in the primer tank 100; And driving means (302) for driving the stirring shaft.

The driving means 302 senses the change in the torque of the stirring shaft 301 at the time of low-speed stirring to prevent hardening at the time of normal stirring for temporarily using the primer or temporarily stopping the work using the servo motor, It is preferable to recognize the curing state of the primer so that the replacement time can be known.

The discharging unit 400 includes an opening / closing valve 401 installed at an outlet 102 of the primer tank 100 to control the discharge of the primer; An upper connector 402 installed below the opening / closing valve 401; A lower connector 403 spaced apart from the upper connector 402; A connection hose 404 connecting the upper connector 402 and the lower connector 403; A damping means 405 installed between the upper connector 402 and the lower connector 403 to absorb and mitigate vibration of the lower connector 403; And a metering valve 406 installed at a lower portion of the lower connector 403 for continuously discharging a quantity of primer required for coating through a nozzle 406a provided at the lower portion.

The primer supply device for a window glass of the present invention is capable of uniformly deteriorating the primer by absorbing the bending and unevenness of the applied surface through the above-described structure, and improving the accuracy of the primer residual amount measurement, It is possible to prevent the adhesion failure of the window glass caused by the glass substrate.

The primer supply device for a window glass of an automobile according to the present invention is a method for measuring the amount of a primer contained in a primer tank by simultaneously applying a weight measurement method using a load cell and a measurement method using a level gauge and a level sensor, It is possible to prevent the adhesion of the window glass due to the sudden depletion of the primer because the inner primer residual amount measurement is performed more accurately.

In addition, when the primer is applied along the edge of the window glass mounted on the articulated robot, the nozzle, which finally discharges the primer, absorbs the shock generated by the hot wire installed on the inner surface of the window glass by the damping part, It is possible to prevent the malfunction of the load cell for measuring the change and to accurately recognize the replenishment timing of the primer, thereby preventing the defective adhesion of the window glass due to the depletion of the primer.

Further, since the damping unit is provided, when the primer is applied along the edge of the window glass mounted on the articulated robot, the shock generated when the wire is caught by the hot wire or the movement shock caused by the curvature of the window glass is absorbed and absorbed uniformly It is possible to prevent the unnecessary waste of the primer and to eliminate the primer removing operation due to the excessive use of the primer, so that the window glass attaching work can be performed efficiently and efficiently.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a primer supply device for attaching a window glass of an automobile in the prior art; FIG.
2 is a perspective view of an embodiment of a primer feeding device for attaching a window glass of an automobile according to the present invention.
3 is a front view according to an embodiment of a primer supplying device for attaching a window glass of an automobile according to the present invention.
4 is a side cross-sectional view of an embodiment of a primer supply device for attaching a window glass of an automobile according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the construction and operation of a primer supplying device for attaching a window glass of a motor vehicle according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

A primer supply device for a window glass of an automobile according to the present invention comprises: a primer tank (100) for receiving a primer for attaching a window glass of an automobile; A mounting part 200 mounted on the articulated robot for measuring a change in weight of the primer tank 100 and measuring the amount of the primer; An agitation driving unit 300 for agitating a primer inside the primer tank 100; And a damping means (405) for absorbing and absorbing vibration generated in the process of moving the nozzle (406a) by the articulated robot while continuously discharging the primer to the nozzle (406a) (400).

In the primer tank 100, an injection port 101 for injecting a primer is formed at one side and a discharge port 102 for discharging a primer is formed at a lower end to accommodate a primer for attaching a window glass of an automobile.

In addition, the primer tank 100 combines the cover plate 105 with the flange 104 so that the cover plate 105 can be disassembled and assembled by forming the flange 104 at the upper opening.

The cover plate 105 rotatably supports the stirring shaft 301 of the stirring driving unit 300 by forming a shaft holding unit 105a at a central portion thereof.

A transparent level gauge 106 for confirming the remaining amount of the primer is formed between the connection portions 103 by forming a connection portion 103 on the upper and lower walls of the main wall of the primer tank 100, It is possible for the administrator to directly confirm the remaining amount of the primer accommodated in the photoreceptor.

A bracket 108 is detachably attached to the connection portion 103 of the primer tank 100 so that a position adjustable level sensor 107 is provided perpendicularly to the guide slot 108a formed in the bracket 108, It is possible to detect the reference amount of the primer inside the level gauge 106 by adjusting the position of the sensor 107 so that the operator can check the remaining amount of the primer stored in the primer tank 100 by using the level gauge 106, The level sensor 107 senses it when the primer stored in the primer tank 100 is exhausted and provides a detection signal to the control unit having the alarm means so that the administrator can easily recognize the exhaustion of the primer It is possible to prevent the exhaustion of the primer.

At this time, when the reference amount of the primer is the minimum amount, the level sensor 107 is fixed to the lowest position of the guide slot 108a. When the reference amount of the primer is the maximum amount, the level sensor 107 is inserted into the guide slot 108a It is fixedly installed at the highest position.

The primer tank 100 is mounted on the articulated robot so as to measure the weight change of the primer tank 100 and measure the amount of the primer inside the primer tank 100. [ An upper plate 202 mounted on the upper portion of the clamping unit 201 and capable of being mounted on the articulated robot, And a load cell 203 installed between the lower part of the plate 202 and measuring the change in weight of the primer tank 100 to measure the exhaustion of the primer.

The clamping unit 201 is provided with a plurality of hooks in a radial shape on the upper surface of the cover plate 105 provided on the upper portion of the primer tank 100 and the lower surface of the upper plate 202, And the clamps on the upper and lower opposing positions are engaged with each other.

At this time, the upper and lower clamping surfaces of the upper and lower clamps are not in contact with each other but are kept at predetermined intervals, so that the primer tank 100 can be vertically vibrated only by the predetermined intervals, .

The upper plate 202 is formed with a plurality of mounting holes so that the upper plate 202 can be mounted on the known articulated robot. The articulated robot has various types and shapes, It is noted in advance that the overall shape and the number of mounting holes can be changed depending on the shape and structure of the mounting portion 200 of the joint robot.

The load cell 203 supports a load of the primer tank 100 by installing a plurality of tensile load cells 203 radially between the primer tank 100 and the upper plate 202, The change in the weight of the primer tank 100 caused by the increase or decrease of the primer accommodated in the primer 100 is measured and applied to a controller (not shown) so that the primer supply time point and the supply stop point can be known.

That is, when the weight of the primer tank 100 increases as the primer is supplied to the primer tank 100, the load cell 203 measures the amount of the primer supplied to the primer tank 100, .

In addition, when the weight of the primer tank 100 is reduced while the primer is exhausted from the primer tank 100, the load cell 203 measures the weight of the primer tank 100 and monitors the change in weight to measure the remaining amount of the primer. To the manager so as to prevent the exhaustion of the primer.

The stirring driving unit 300 includes a stirring shaft 301 having a stirring blade 301a for stirring a primer contained in the primer tank 100; And driving means (302) for driving the stirring shaft.

The cover plate 105 of the stirring shaft 301 is rotatably mounted on a shaft holding portion 105a formed at a central portion thereof and is connected to a pulley and a belt of the driving means 302 by a pulley at an upper end portion thereof, A stirring blade 301a for stirring a primer contained in the primer tank 100 is installed so that the primer contained in the primer tank 100 is continuously stirred while being driven by the driving means 302 to prevent hardening of the primer do.

The driving means 302 senses the torque change of the stirring shaft 301 at the time of low speed stirring to prevent hardening at the time of normal stirring for temporary use of the primer or temporary work stop by using the servomotor, So that it is possible to know the replacement time.

The discharging unit 400 is installed in the discharging port 102 of the primer tank 100 to discharge the primer discharged through the discharging port 102 to the nozzle 406a only by an amount necessary for applying the primer. An open / close valve (401) for controlling the discharge; An upper connector 402 installed below the opening / closing valve 401; A lower connector 403 spaced apart from the upper connector 402; A connection hose 404 connecting the upper connector 402 and the lower connector 403; A damping means 405 installed between the upper connector 402 and the lower connector 403 to absorb and mitigate vibration of the lower connector 403; And a metering valve 406 installed at a lower portion of the lower connector 403 for continuously and quantitatively discharging the amount of primer required for coating through a nozzle 406a provided at the lower portion.

It is preferable to use a valve of the ball valve type used in a conventional pipe joint to control the discharge of the primer, but the present invention is not limited thereto.

The upper connector 402 is formed with a connection portion 402a for connection to the on-off valve 401 and a coupler portion 402b for connection of the connection hose 404 on the side thereof. A support portion 402c for installing the damping means 405 is radially formed and a guide rod 402d is provided on each support portion 402c.

The lower connector 403 is formed symmetrically with the upper connector 402 and the guide 403d for guiding the guide bar 402d is formed in each of the supports 403c, The vibration is generated along the guide rod 402d.

The connection hose 404 connects the upper connector 402 and each coupler 402b of the lower connector 403 so that the primer supplied to the upper connector 402 is connected to the flexible connection hose 404, The primer can be supplied to the lower connector 403 from the upper connector 402 even if the lower connector 403 vibrates up and down.

The coil spring is interposed between the bottom surface of the upper link body 402 and the upper surface of the guide portion of the lower link body 403 by inserting a coil spring into the guide rod 402d, 403 are absorbed by the coil spring to prevent vibration from being transmitted to the upper connector 402.

The damping means 405 is preferably provided with a coil spring but is not limited thereto and may include a damping means 405 for preventing vertical vibration of the lower link 403 from being transmitted directly to the upper link 402, It is possible to do anything in advance.

The volume of the primer supplied to the metering chamber of the metering valve 406 is measured by the metering valve 406 through the connection member and the priming chamber is set to a constant volume by the piston driving method using the air pressure A certain amount of primer is discharged at a uniform pressure through the nozzle 406a provided at the lower part of the metering valve 406 so that the primer is applied along the coated surface of the window glass.

The operation of the primer supplying device for attaching the window glass of the vehicle to which the technique of the present invention is applied will be described as follows.

A primer supply device for attaching a window glass of an automobile according to the present invention is mounted on an articulated robot arranged on a design line for automobile assembly production using an upper plate (202), and a predetermined amount of primer is supplied through an injection part of a primer tank Inject.

Therefore, when applying the primer along the edge of the window glass in order to attach the window glass of the automobile to the body of the automobile, the driving means 302 is operated to prevent the primer injected into the primer tank 100 from hardening, The stirring blade 301a is continuously stirred so as to prevent the primer filled in the primer tank 100 from hardening.

However, in a state where the articulated robot applies the primer to the car or temporarily stops the operation, the rotation of the servo motor constituting the driving means 302 is switched to low speed by the controller (not shown) So that it can be naturally stirred.

As described above, the primer stirred in the primer tank 100 is discharged through the discharge port 102 of the lower end in a form of a natural drop. In this process, the opening / closing valve 401 installed in the discharge port 102 discharges the primer . ≪ / RTI >

The primer discharged by opening the on-off valve 401 is supplied to the upper connector 402 provided below the opening and closing valve 401 and then connected to the upper connector 402 through the connection hose 404, And the primer supplied to the lower connector 403 is supplied to the metering chamber of the metering valve 406 provided at the lower end of the lower connector 403, and the primer for the metering chamber setting volume is constantly discharged A predetermined amount of primer is discharged at a uniform pressure through a nozzle 406a provided at a lower portion of the metering valve 406. Accordingly, while the primer is being discharged through the nozzle 406a, the articulated robot moves along the coated surface of the window glass, The primer is applied to the application surface of the window glass by moving the window 406a.

Meanwhile, in the process of applying the primer as described above, when the nozzle 406a is caught by the hot line installed on the inner surface of the window glass, vibration may occur, or due to the large curvature of the window glass, the articulated robot may move the nozzle 406a to the window glass Vibration or shock transmitted through the nozzle 406a may be transmitted to the damping means 405 provided between the upper connector 402 and the lower connector 403, It is possible to prevent the vibration or shock transmitted through the nozzle 406a from being transmitted to the load cell 203 supporting the load of the primer tank 100, thereby preventing the load cell 203 from malfunctioning.

Therefore, in the primer application process, the load cell 203 supporting the load of the primer tank 100 accurately measures the weight of the primer tank 100 in real time and applies the same to the controller. In the controller, The amount of the primer remaining in the primer tank 100 is recognized based on the information that the primer is replenished, and the replenishing timing of the primer is accurately informed to the operator.

That is, when the primer is injected into the primer tank 100, the weight of the primer tank 100 at the maximum amount (HL) of the primer to be primed and the minimum amount (LL) The weight of the primer tank 100 provided in real time by the load cell 203 is compared and analyzed so that the primer injected into the primer tank 100 can be more efficiently managed .

In addition, a level gauge 106 is provided on the outside of the primer tank 100 so that the remaining amount of the primer inside the primer tank 100 can be visually confirmed, and the amount of primer of the level gauge 106 is detected, Warning), the administrator can easily recognize the exhaustion of the primer, thereby preventing the exhaustion of the primer, and it is also possible to prevent the exhaust of the primer due to the depletion of the window glass It is possible to prevent the adhesion failure.

In addition, when the servomotor of the stirring driving unit 300 rotates, the torque applied to the stirring shaft 301 is sensed and applied to the controller so that the manager or the user can recognize whether the primer can be used in a normal state or a hardened state do.

That is, when the primer is in a normal state in which the primer is usable, the specified torque is sensed. When the primer starts to be hardened, a torque higher than the specified torque is generated. Therefore, the servo motor is applied to the controller to detect whether the primer is usable, So that it can be performed more efficiently.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100: primer tank 101: injection port
102: exhaust port 103:
104: flange 105: cover plate
106: Level gauge 107: Level sensor
200: mounting portion 201: clamping portion
202: Upper plate 203: Load cell
300: stirring drive unit 301: stirring shaft
301a: stirring wing 302: driving means
400: discharging part 401: opening / closing valve
402: upper connector 403: lower connector
404: connecting hose 405: damping means
406: Quantitative valve 406a: Nozzle

Claims (6)

A primer tank 100 having an injection port 101 formed at one side thereof and a discharge port 102 formed at a lower end thereof to receive a primer for attaching a window glass of an automobile therein;
A mounting part 200 mounted on the articulated robot for applying the primer and measuring the amount of primer inside the primer tank 100 by measuring the weight change of the primer tank 100;
An agitation driving part 300 for agitating a primer contained in the primer tank 100;
A damping which absorbs vibration generated during the movement of the nozzle 406a by the articulated robot while allowing the primer discharged through the discharge port 102 to be continuously discharged to the nozzle 406a only by an amount necessary for application, And a discharge unit (400) having means (405).
The method according to claim 1,
The primer tank 100 is formed with a flange 104 at an upper opening so that the cover plate 105 can be disassembled and assembled to the flange 104 and a connecting portion 103 is formed at the upper and lower portions of the main wall And a transparent level gauge (106) for confirming the remaining amount of the primer is installed between the connecting portions (103).
3. The method of claim 2,
A bracket 108 is detachably attached to the connecting portion 103 of the primer tank 100 and a level sensor 107 is installed to vertically adjust the position of the bracket 108 in a guide slot 108a formed in the bracket 108, So as to be able to sense a reference amount of a primer inside the level gauge (106).
The method according to claim 1,
The mounting portion 200 includes a clamping portion 201 radially installed at an upper portion of the primer tank 100;
An upper plate 202 installed on the upper portion of the clamping unit 201 to be mounted on the articulated robot;
And a load cell (203) installed between the upper part of the primer tank (100) and the lower part of the upper plate (202) and measuring the change in weight of the primer tank (100) to measure the exhaustion of the primer Primer supply device for window glass attachment of automobile.
The method according to claim 1,
The stirring driving unit 300 includes a stirring shaft 301 having a stirring blade 301a for stirring the primer in the primer tank 100;
And a driving means (302) for driving the stirring shaft.
The method according to claim 1,
The discharging unit 400 includes an opening / closing valve 401 installed at an outlet 102 of the primer tank 100 to control the discharge of the primer;
An upper connector 402 installed below the opening / closing valve 401;
A lower connector 403 spaced apart from the upper connector 402;
A connection hose 404 connecting the upper connector 402 and the lower connector 403;
A damping means 405 installed between the upper connector 402 and the lower connector 403 to absorb and mitigate vibration of the lower connector 403;
And a metering valve (406) installed at a lower portion of the lower connector (403) for continuously and quantitatively discharging the amount of primer necessary for coating through a nozzle (406a) provided at the lower portion. An attachment primer feeder.

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