KR102030563B1 - Sealer application apparatus for vehicle body - Google Patents

Abstract

There is provided a sealer application device for applying a sealer to the surface of a vehicle body. The sealer application device for a vehicle body includes an applicator, a circulation pump, a sealer temperature regulator, a sealer circulation flow path, and a sealer supply source. The sealer is applied to the surface of the vehicle body by an applicator. The circulation pump pumps the sealer. The sealer temperature regulator adjusts the temperature of the sealer to a set temperature. The sealer circulation passage is formed of a closed circuit passing through the applicator, the circulation pump, and the sealer temperature regulator, and the sealer is circulated by the circulation pump through the sealer circulation passage. The sealer source is connected to the sealer circulation passage to supply the sealer to the sealer circulation passage.

Description

Sealer coating device for vehicle body {SEALER APPLICATION APPARATUS FOR VEHICLE BODY}

The disclosed embodiments are directed to an apparatus and method for applying a sealer to a vehicle body.

The vehicle body is assembled by welding or bonding panels of various metals. Liquid materials (hereinafter referred to as sealers) having properties such as adhesion, sealing, vibration damping, antirust, waterproofing, and rigid reinforcement are applied to the vehicle body during automobile assembly. This sealer may be applied by the applicator to the surface of the panel or to the gap of the welded panels.

The sealer for the vehicle body should have characteristics suitable for the target area of the vehicle body to which the sealer is to be applied. For example, when the sealer is applied to the vehicle body, the temperature of the sealer in relation to the target site of the vehicle body can be considered as a suitable characteristic of the sealer.

The conventional sealer application apparatus pumps a sealer from a supply source, supplies it to a coating gun through a hose, and applies it to a vehicle body through the coating gun. While the sealer is supplied to the application gun, the temperature of the sealer may deviate from the temperature required for application. Sealers with varying temperatures can have a significant adverse effect on application quality.

BACKGROUND ART A sealer applying apparatus is known in which a heating wire for heating the sealer is wound around a hose through which the sealer flows. However, since frequent forces are applied to the hose during the operation of the sealer applying device, not only the hot wire can be easily disconnected, but also the hot wire cannot maintain the temperature of the sealer over the entire flow path of the sealer. As described above, the conventional sealer applying apparatus does not maintain the temperature of the sealer at a temperature suitable for the target site of the vehicle body, or does not maintain the sealer temperature with high reliability over the entire flow path of the sealer.

The disclosed embodiments solve the problems of the prior art described above. The disclosed embodiments provide a sealer application apparatus that stably adjusts and maintains the temperature of the sealer to a set temperature and applies the sealer adjusted to the set temperature to the vehicle body. In addition, the disclosed embodiments provide a sealer application method for applying a sealer adjusted to a set temperature to a vehicle body.

Embodiments according to one aspect of the present disclosure relate to a sealer application device for applying a sealer to a surface of a vehicle body. An apparatus for applying a sealer for a vehicle body according to an exemplary embodiment includes an applicator, a circulation pump, a sealer temperature regulator, a sealer circulation flow path, and a sealer supply source. The applicator applies the sealer to the surface of the vehicle body. The circulation pump is configured to pump the sealer. The sealer temperature regulator adjusts the temperature of the sealer to a set temperature. The sealer circulation passage is formed of a closed circuit passing through the applicator, the circulation pump, and the sealer temperature regulator, and the sealer is circulated by the circulation pump through the sealer circulation passage. The sealer source is connected to the sealer circulation passage to supply the sealer to the sealer circulation passage.

In one embodiment, the applicator includes a booster having a chamber for receiving the sealer and an extruder for extruding the sealer in the chamber, and an application gun coupled to the booster in communication with the chamber and configured to discharge a portion of the sealer in the chamber to the surface of the vehicle body. do.

In one embodiment, the sealer circulation flow path includes a first flow path that forms a closed circuit through a booster, and a second flow path that forms a closed circuit through the application gun from the first flow path.

In this embodiment, the applicator can be in any one of an active mode in which the sealer is circulated through the first flow path and a portion of the sealer is discharged through the application gun, and an inactive mode in which the sealer in the chamber is circulated through the second flow path. It works as

In one embodiment, the applicator further includes a first valve installed in the first flow path and opening and closing the first flow path, and a second valve provided in the second flow path and opening and closing the second flow path.

In one embodiment, the sealer applicator for the vehicle body further includes a controller for controlling the applicator so that the applicator is operated in either of an active mode and an inactive mode.

In this embodiment, in the active mode the controller opens the first valve and closes the second valve to circulate the sealer through the first flow path. In addition, in the inactive mode, the controller opens the second valve and closes the first valve to circulate the sealer through the second flow path.

In one embodiment, the booster further comprises a ram for extruding the sealer in the chamber.

In this embodiment, the booster further comprises a servo drive device controlled by the controller and configured to drive the ram. The servo drive device includes a servo motor for generating rotation and a screw shaft operatively connected to the servo motor and rotated by the servo motor. The ram is moved linearly by the rotation of the screw shaft.

In one embodiment, the sealer temperature regulator includes a plurality of thermoelectric elements configured to adjust or maintain the sealer at a set temperature. In this embodiment, the sealer circulation passage includes a tube through the sealer temperature regulator.

In one embodiment, the sealer application apparatus for the vehicle body further comprises one or more temperature detection sensors mounted in the sealer circulation passage and configured to detect the temperature of the sealer, wherein the sealer temperature regulator is controlled based on the detected sealer temperature. .

In one embodiment, the surface of the vehicle body comprises a roof ditch extending between the roof panel of the vehicle body and the side panel of the vehicle body, and the set temperature is in the range of 23 ° C to 27 ° C.

In one embodiment, the set temperature is set within a temperature range in which the sealer has self-leveling characteristics.

In one embodiment, the sealer applicator for a vehicle body further includes a robot for positioning the applicator on the surface of the vehicle body.

Embodiments according to another aspect of the present disclosure relate to a method of applying a vehicle body sealer. The sealer applying method for a vehicle body of the exemplary embodiment applies the sealer to the surface of the vehicle body using a sealer circulation passage including a first flow passage through the booster and formed of a closed circuit. The temperature of the sealer is adjusted to the set temperature. The sealer adjusted to the set temperature is discharged from the booster. The sealer adjusted to the set temperature is circulated only through the first flow path.

In one embodiment, the sealer circulation flow path further comprises a second flow path extending from the first flow path through an application gun coupled to the booster. The sealer adjusted to the set temperature is circulated through the first flow path and the second flow path.

In one embodiment, the sealer circulation flow path is controlled such that the sealer adjusted to the set temperature is circulated through only the first flow path or circulates through the first flow path and the second flow path.

In one embodiment, the discharge of the sealer and the circulation through only the first flow path of the sealer are performed simultaneously.

In one embodiment, the adjustment of the sealer temperature is performed by heating or cooling the sealer to a set temperature by means of a thermoelectric element.

In one embodiment, the surface of the vehicle body comprises a roof ditch extending between the roof panel of the vehicle body and the side panel of the vehicle body, wherein the set temperature is in the range of 23 ° C to 27 ° C.

According to the sealer applying apparatus of one embodiment of the present disclosure, the vehicle body sealer is circulated through the sealer circulation circuit of the closed circuit, and the temperature of the sealer is adjusted to the set temperature by the sealer temperature controller. Accordingly, in such a sealer applying apparatus, the temperature of the sealer in the closed circuit or the sealer at the time of application can be stably maintained at a specific temperature. In addition, even when the sealer is not applied, the sealer can be circulated through the application gun, so that the temperature of the sealer inside the application gun can also be effectively maintained at the set temperature.

1 schematically illustrates a sealer applying apparatus according to an embodiment of the present disclosure.
FIG. 2 illustrates a loop deitch and a sealer applied to the loop deitch in accordance with one embodiment of the present disclosure.
3 is a front view illustrating a circulation pump and a sealer temperature regulator according to an embodiment of the present disclosure.
4 is a perspective view illustrating a circulation pump and a sealer temperature regulator according to an embodiment of the present disclosure.
5 is an exploded perspective view illustrating a circulation pump according to an embodiment of the present disclosure.
6 schematically illustrates a temperature detection sensor that detects a sealer temperature, in accordance with an embodiment of the present disclosure.
7 is a perspective view illustrating a sealer source according to an embodiment of the present disclosure.
8 is a perspective view illustrating an applicator according to an embodiment of the present disclosure.
FIG. 9 is a side view of the applicator shown in FIG. 8. FIG.
10 is a perspective view illustrating a booster according to an embodiment of the present disclosure, and illustrates a disassembled servo drive device.
11 is a longitudinal sectional view of a booster according to an embodiment of the present disclosure.
12 is a perspective view illustrating the application gun and the second valve separately according to an embodiment of the present disclosure.
13 is a longitudinal cross-sectional view of an application gun in accordance with one embodiment of the present disclosure.
14 is a longitudinal cross-sectional view of a second valve according to an embodiment of the present disclosure.
15 illustrates an example of an applicator operation screen displayed by a display device of a controller according to an embodiment of the present disclosure.
16 is a block diagram schematically illustrating a sealer applying apparatus according to an embodiment of the present disclosure.
17 is a block diagram illustrating a sealer applying method according to an embodiment of the present disclosure.

Embodiments of the present disclosure are illustrated for the purpose of describing the technical spirit of the present disclosure. The scope of the present disclosure is not limited to the embodiments set forth below or the detailed description of these embodiments.

All technical and scientific terms used in the present disclosure, unless defined otherwise, have the meanings that are commonly understood by one of ordinary skill in the art to which this disclosure belongs. All terms used in the present disclosure are selected for the purpose of more clearly describing the present disclosure, and are not selected to limit the scope of the rights according to the present disclosure.

As used in this disclosure, expressions such as "comprising", "including", "having", "having", and the like, include the possibility of including other embodiments unless otherwise stated in the phrase or sentence in which the expression is included. It should be understood as open-ended terms.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Expressions such as “first”, “second”, and the like used in the present disclosure are used to distinguish a plurality of components from each other, and do not limit the order or importance of the components.

In the present disclosure, when a component is referred to as being "connected" or "connected" to another component, the component may be directly connected to or connected to the other component, or new It is to be understood that the connection may be made or may be connected via other components.

Hereinafter, exemplary embodiments will be described with reference to the accompanying drawings. In the accompanying drawings, the same or corresponding components are given the same reference numerals. In addition, in the following description of the embodiments, it may be omitted to duplicate the same or corresponding components. However, even if the description of the component is omitted, it is not intended that such component is not included in any embodiment.

The embodiments disclosed below and the embodiments shown in the accompanying drawings are related to an apparatus for applying a sealer to a vehicle body (hereinafter, simply referred to as a "sealer coating apparatus"). The sealer applying apparatus according to an embodiment may be installed adjacent to the assembly line of the vehicle in which the vehicle body is conveyed, but the installation place of the sealer applying apparatus is not limited thereto. The sealer applying apparatus according to an embodiment may apply a liquid substance (sealer) that exhibits functions such as adhesion, sealing, vibration damping, rust prevention, waterproofing, and rigid reinforcement to the surface of the vehicle body. According to an embodiment, the sealer applying apparatus may apply the sealer to various surfaces such as a stream pattern, a spot pattern, a bead pattern, a swirl pattern, and the like on a surface of a vehicle body. have.

A sealer applying apparatus 1000 according to an embodiment will be described with reference to FIGS. 1 to 16. As shown in FIG. 1, the sealer applying apparatus 1000 is installed on or adjacent to the assembly line 110 of a motor vehicle. According to one embodiment, the sealer applying apparatus 1000 may be applied to the surface of the vehicle body 120 fixed in the trolley 111 and conveyed along the assembly line 110 in a string pattern.

The surface of the vehicle body 120 may be a surface of various structural components constituting the vehicle body 120 (for example, a floor panel, a dash panel, a side panel, a roof panel, a bonnet panel, a door panel, a trunk lid, a tail gate, and the like), Or surfaces between neighboring structural components. As shown in FIG. 2, the surface of the vehicle body 120 includes a roof ditch 123 formed between the roof panel 121 and the side panel 122. For example, the roof panel 121 and the side panel 122 of the vehicle body 120 may be joined by spot welding, between which the roof ditches 123 for drainage extend. The sealer applying apparatus 1000 applies the sealer 130 in a string pattern along the loop dich 123. The sealer 130 applied to the roof dish 123 in a string pattern is cured while the vehicle body 120 passes through the painting oven of the assembly line 110. The hardened sealer 130 may form an exterior member extending along the roof ditches 123 and may function as a waterproof member that prevents water from entering into a gap between the roof panel 121 and the side panel 122.

The sealer applying apparatus 1000 according to an embodiment includes an applicator 1100, a circulation pump 1200, a sealer temperature regulator 1300, a sealer circulation flow path 1400, and a sealer supply source 1500. can do.

The sealer is applied to the roof dish 123 (an example of the surface of the vehicle body) through the nozzle 1138 of the applicator 1100. The applicator 1100 is fluidly connected to the sealer circulation passage 1400, and the sealer circulation passage 1400 passes through the applicator 1100. Accordingly, the sealer may be circulated through a part of the sealer circulation passage 1400 inside the applicator 1100. The sealer applicator 1000 in this embodiment includes a robot 1700 capable of positioning the applicator 1100 to the roof ditches 123. An applicator 1100 is mounted at a free end of an arm 1710 of the robot 1700, and the applicator 1100 may be positioned above the roof dish 123 by the robot 1700. For example, the robot 1700 may position the applicator 1100 such that a distance between the nozzle 1138 of the applicator 1100 and the loop dichig 123 is maintained at 6.0 mm to 7.0 mm.

The circulation pump 1200 is configured to pump the sealer, and the sealer is circulated through the sealer circulation passage 1400 by the circulation pump 1200. The circulation pump 1200 is fluidly connected to the sealer circulation passage 1400. In this embodiment, the sealer applicator 1000 has a stand 1930 that lies on the ground 112 of the assembly line 110, and the circulation pump 1200 is attached to the stand 1930. As an example, as shown in FIGS. 1 and 3 to 5, the circulation pump 1200 includes a pump manifold 1210 having an inlet port and an outlet port connected to the sealer circulation channel 1400, and a pump manifold. Gear pump 1220 fluidly coupled to fold 1210 and delivering sealer, Servo motor assembly 1230 for rotating gears of gear pump 1220, Gear pump 1220 and Servo motor assembly Coupling 1240 for connection of 1230. Servo motor assembly 1230 has a servo motor 1231 that generates rotation. The circulation pump 1200 may be stopped after a predetermined time elapses after completion of the sealer application.

The temperature of the sealer in the sealer circulation flow path 1400 is adjusted to the set temperature by the sealer temperature regulator 1300. Accordingly, the sealer applying apparatus 1000 may circulate the sealer adjusted to the constant set temperature by the sealer temperature controller 1300 through the sealer circulation flow path 1400 and the loop dish 123 through the applicator 1100. It can be applied to.

As a property of the sealer applied to the vehicle body 120, the property of flattening the surface of the applied sealer may be considered important in relation to the portion of the vehicle body to which the sealer is applied. Such sealer properties may be referred to in the art as self-leveling properties. The sealer, which is cured after being applied to the roof dish 123, forms an exterior material that extends along the roof dish 123. In order to form a good appearance of the loop deitch 123, the loop deciduous sealer may be adjusted and maintained at a temperature having self-leveling characteristics. For example, the roof dish sealer may have a self-leveling characteristic at a temperature in the range of 23 ° C to 27 ° C. Accordingly, the set temperature in the sealer applying apparatus 1000 may be set within a temperature range in which the sealer has self-leveling characteristics. According to one embodiment, the range of the set temperature may be 23 ° C to 27 ° C. For example, the set temperature may be set to 25 ° C.

In this embodiment, the sealer temperature regulator 1300 is mounted on top of the stand 1930. As shown in FIG. 3, the pipe 1414, which is a part of the sealer circulation flow path 1400, passes through the sealer temperature regulator 1300. That is, the sealer temperature controller 1300 is fluidly connected to the sealer circulation passage 1400. The sealer temperature regulator 1300 is configured to heat or cool the sealer flowing through the tube 1414 to adjust the temperature of the sealer to a set temperature. The sealer temperature regulator 1300 is also configured to set or maintain the sealer flowing through the tube 1400 at a set temperature. The shape of the tube 1414 shown in FIG. 3 is exemplary. As another example, the tube 1414 may take the form of a serpentine or a lattice.

Referring to FIG. 4, in this embodiment, the sealer temperature regulator 1300 includes a plurality of thermoelements 1330. The thermoelectric element 1330 is configured to heat or cool the sealer and to adjust or maintain the temperature of the sealer at a set temperature or a set temperature range. The thermoelectric element 1330 may exothermic and endothermic by the Peltier effect. 1, 3, and 4, the sealer temperature regulator 1300 according to an embodiment includes a cooling unit 1310 and a heating unit 1320 which face each other with a tube 1414 interposed therebetween. The cooling unit 1310 and the heating unit 1320 include the plurality of thermoelectric elements 1330 described above. The cooling part 1310 cools the sealer in the pipe 1414 by an endothermic action, and drops the temperature of the sealer to a set temperature range. The heating part 1320 heats the sealer in the tube 1414 by a heat generating action, and raises the temperature of the sealer to a set temperature range. In addition, the heating unit 1320 has a plurality of fans 1321 and a plurality of vents 1322 for heat dissipation.

According to one embodiment, the sealer applying apparatus 1000 includes a controller 1600 that controls the operation of the sealer temperature regulator 1300. The operation of the cooling unit 1310 and the heating unit 1320 of the sealer temperature regulator 1300 can be controlled by the controller 1600 shown in FIG. 1. The controller 1600 may be installed on the ground 112 of the assembly line 110. The controller 1600 may include a display device 1610 and display information related to the operation of the applicator 1100 to the operator through the display device 1610. For example, the display device 1610 may include a touch panel, and the controller 1600 may provide a command regarding an operation of the sealer applying device 1000 in response to an operator's operation performed on the surface of the display device 1610. I can receive it. Alternatively, the display device 1610 may have only a function of displaying information, and the controller 1600 may include an input device configured to receive a command from an operator.

According to one embodiment, the sealer application device 1000 includes one or more temperature detection sensors mounted in the sealer circulation passage and configured to detect the temperature of the sealer. For example, the temperature detection sensor 1810 shown in FIG. 6 can be employed for the sealer coating device 1000. Referring to FIG. 6, the temperature detection sensor 1810 includes a bar-shaped detection unit 1811, a mounting unit 1812 for mounting on the sealer circulation channel 1400, a conductive wire 1813 extending from the mounting unit 1812, and And a connector 1814 coupled to the end of the lead 1813. The temperature detection sensor 1810 transmits a signal regarding the detected sealer temperature to the controller 1600.

In this embodiment, the sealer application apparatus 1000 may have five temperature detection sensors 1810. 3 and 16, two temperature detection sensors 1810 may be installed in the sealer circulation flow path 1400 adjacent to the sealer temperature controller 1300. For example, two temperature detection sensors 1810 may be installed adjacent to both ends of the tube 1414 passing through the sealer temperature regulator 1300. The three temperature detection sensors 1810 may be installed in the sealer circulation passage 1400 near or in the booster 1101 and the application gun 1102 of the applicator 1100. For example, the temperature detection sensor 1810 may be installed in the sealer circulation passage 1400 adjacent to the inlet and outlet of the booster 1101 and the inlet of the application gun 1102.

The controller 1600 is configured to control the operation of the sealer temperature regulator 1300 based on the detected sealer temperature from the temperature detection sensors 1810. According to one embodiment, the controller 1600 is configured to determine the sealer temperature in the sealer circulation flow path 1400 from the detection signal from the temperature detection sensors 1810 and compare the determined temperature with a set temperature or a set temperature range. . If it is determined that the temperature of the sealer is lower than the set temperature, the controller 1600 operates the heating unit 1320 of the sealer temperature regulator 1300 to raise the temperature of the sealer and adjust the temperature of the sealer within the set temperature or the set temperature range. And maintain. If it is determined that the temperature of the sealer is higher than the set temperature, the controller 1600 operates the cooling unit 1310 of the sealer temperature regulator 1300 to lower the temperature of the sealer and adjust the temperature of the sealer to the set temperature or the set temperature range. And maintain. In addition, in this embodiment, the controller 1600 is configured to control the operation of the circulation pump 1200 so that the circulation speed, pressure, and the like of the sealer being fed by the circulation pump 1200 may be adjusted.

The sealer applying apparatus 1000 of the embodiment circulates the sealer through a close loop. In this embodiment, as shown in FIGS. 1 and 16, the sealer circulation flow path 1400 is formed of a closed circuit passing through the applicator 1100, the circulation pump 1200, and the sealer temperature regulator 1300. That is, while the sealer flows and circulates through the sealer circulation passage 1400, a part of the sealer in the sealer circulation passage 1400 is applied through the applicator 1100. In FIG. 1, solid arrows indicate the flow direction of the sealer in the sealer application device 1000 of one embodiment.

The sealer circulation flow path 1400 is provided within the components of the sealer applicator 1000 and external flow paths such as hoses, pipes, pipes, and manifolds that enable the flow of the sealer between the components of the sealer applicator 1000. It may have internal flow paths such as hoses, tubes, channels, fluid passages that enable the flow of the sealer. In this embodiment, the outer flow path of the sealer circulation flow path 1400 includes a flexible high pressure hose. In detail, referring to FIGS. 1 and 3, the sealer circulation flow path 1400 is circulated with the first hose 1411 between the sealer temperature regulator 1300 and the applicator 1100, and the applicator 1100. A second hose 1412 between the pump 1200 and a third hose 1413 between the circulation pump 1200 and the sealer temperature regulator 1300. The sealer circulation flow path 1400 also includes a tube 1414 that passes through the sealer temperature regulator 1300 as one of the internal flow paths. In this embodiment, as shown in FIG. 1, the first and second hoses 1411, 1412 are fixed to the top of the hose stand 1941 and the robot 1700 fixed to the ground of the assembly line 110. It is held by the hose stand 1942.

In addition, referring to FIG. 16, the sealer circulation flow path 1400 includes a first flow path 1420 and a second flow path 1430 positioned in the applicator 1100 to form a part of a closed circuit. The first flow path 1420 forms a closed circuit through the booster 1101. The second flow path 1430 forms a closed circuit from the first flow path 1420 through the application gun 1102.

As shown in FIGS. 1, 3, and 4, the sealer application device 1000 includes a pressure gauge 1910 configured to detect the pressure of the sealer in the sealer circulation passage 1400 and a filter assembly 1920 configured to filter the sealer. It may include. For example, the pressure gauge 1910 may be fluidly coupled to the inlet port of the circulation pump 1200, and the filter assembly 1920 may be fluidized to the inlet port of the pressure gauge 1910 and the second hose 1420. Can be combined.

In the sealer applying device 1000 of the embodiment, the sealer is supplied from the sealer supply source 1500 to the sealer circulation flow path 1400. The sealer source 1500 is fluidly connected to the sealer circulation passage 1400. 1 and 3, in this embodiment, the sealer source 1500 is fluidly connected to the sealer circulation passage 1400 through a supply hose 1511 and a connection manifold 1512.

1 and 7, the sealer source 1500 includes a can 1520 filled with a sealer and a can pump 1530 for pumping the sealer in the can 1520, the ground of the assembly line 110. Is installed. The can pump 1530 includes an air motor 1531 serving as a drive source, a pumping device 1532 that sucks and seals a sealer by driving the air motor 1531, and an air motor for replacing the can 1520. 1153 and the pneumatic cylinder device 1533 to move the pumping device 1532 up and down. The lower part of the pumping device 1532 is located inside the can 1520. The sealer suctioned by the pumping device 1532 is driven into the sealer circulation flow path 1400 by driving the air motor 1531 through the outlet port assembly 1534 and the supply hose 1511 attached to the pumping device 1532. It is supplied periodically. Accordingly, the sealer in the sealer circulation flow path 1400 may be pressurized by the pressure generated by the can pump 1530, and the can pump as much as the amount of the sealer in the sealer circulation flow path 1400 consumed by the applicator 1100. The sealer may be supplied from 1530. After the air motor 1531 and the pumping device 1532 are raised by the pneumatic cylinder device 1533, the can 1520 with the sealer exhausted can be exchanged.

An applicator 1100 of the sealer applying apparatus 1000 according to an embodiment will be described with reference to FIGS. 1 and 8 to 16. 8-11, the hose for supplying the working fluid to the valves of the applicator 1100 is omitted.

A portion of the sealer circulation passage 1400 passes through the applicator 1100, and the applicator 1100 is fluidly connected to the sealer circulation passage 1400. Accordingly, the sealer may be circulated through the applicator 1100 during the application operation. In addition, the applicator 1100 is configured to impart an initial pressure necessary for application to the sealer and to variably adjust the application amount of the sealer. In this embodiment, the applicator 1100 is coupled to a booster 1101 and a booster 1101 configured to depressurize or pressurize the sealer and to extrude the applicator 1102 and is configured to discharge the sealer to the loop dish 123. It includes. In addition, the applicator 1100 is configured such that the sealer circulates through the applicator 1100 at a pause time of the application operation. In this regard, the first flow path 1420 and the second flow path 1430, which are part of the sealer circulation flow path 1400, extend through the parts attached to the outside of the applicator 1100 and the inside of the applicator 1100. In the sealer applying apparatus of the embodiment, a part of the outer flow path of the aforementioned sealer circulation flow path 1400 adjacent to the applicator 1100 and the inner flow path of the sealer purifying flow path 1400 described above formed inside the applicator 1100. The first flow path 1420 and the second flow path 1430 may be formed.

In this embodiment, the booster 1101 is mounted at the free end of the arm 1710 of the robot 1700 via the connecting bar 1181 and the bracket 1182. The booster 1101 is fluidly connected to the sealer circulation passage 1400 and has a chamber 1111 (see FIG. 11) for receiving the sealer therein. 8 to 11, the booster 1101 includes a booster housing 1112, an end cap 1113 that is liquid-tightly coupled to a lower end of the booster housing 1112, and a booster housing 1112. It is provided with a packing assembly 1115 that is tightly coupled to the top of the. The chamber 1111 is formed in the shape of a bore penetrating the booster housing 1112 in the longitudinal direction. An injection passage 1423 through which the sealer flows is formed in the side wall of the booster housing 1112, and a fluid passage extending from the injection passage 1423 to the chamber 1111 is formed in the booster housing 1112. The booster 1101 also has a lubricating oil supply 1116 in communication with the packing assembly 1115 at the top of the booster housing 1112. The lubricating oil supply unit 1116 includes a tubular body in which lubricating oil is contained and bent in an L shape. Lubricant may be supplied from the lubricant supply unit 1116 to the packing assembly 1115, and a sealer capable of leaking from the chamber 1111 may pass through the lubricant inside the tubular body of the lubricant supply unit 1116 and thus the tubular body of the lubricant supply unit 1116. Can be gathered within.

As shown in FIGS. 8 to 10, the booster 1101 has an injection valve 1160 coupled to the sidewall of the booster housing 1112 and in communication with the injection flow path 1423. The first manifold 1421 of the first flow path 1420 is tightly coupled to the injection valve 1160. The first hose 1411 of the sealer circulation channel 1400 is connected to the first manifold 1421. The injection valve 1160 is configured to open and close a fluid passage connecting the first manifold 1421 and the injection passage 1423, and does not flow or seal the sealer to the chamber 1111. As one example, the injection valve 1160 may have a needle-shaped valve body therein, and may be configured to perform the opening and closing operation of the valve body by the bias force of the air pressure and the spring.

8, 9, and 16, the booster 1101 includes a first valve 1140 installed in the first flow passage 1420 and configured to open and close the first flow passage 1420. In this embodiment, the first valve 1140 is tightly coupled to the first manifold 1421, and the second manifold 1422 of the first flow path 1420 is opposite to the first manifold 1421. Is tightly coupled to the first valve 1140 on the side. Accordingly, the first flow path 1420 branches from the first manifold 1421, and the sealer flows into the chamber 1111 and the first valve 1140 of the booster 1101. The first valve 1140 allows or inhibits sealer flow between the first hose 1411 and the second hose 1412. As an example, the first valve 1140 may have a needle-shaped valve body therein, and may be configured to perform the opening and closing operation of the valve body by the bias force of the pneumatic pressure and the spring.

8, 9 and 11 through 13, the application gun 1102 is coupled to the booster 1101 to communicate with the chamber 1111. 10 and 11, the end cap 1113 of the booster 1101 is formed with a fluid passage 1431 of the second flow path 1430 communicating with the chamber 1111, and the end cap 1113. ) Is coupled to the coupling 1114 in which the fluid passage 1432 of the second flow path 1430 is formed. The coupling 1114 is equipped with a pressure sensor 1820 configured to detect the pressure of the sealer in the fluid passage 1432. The application gun 1102 is coupled to the coupling 1114 to communicate with the fluid passage 1432, and in communication with the chamber 1111. A communication port 1433 (see FIG. 13) of the second flow path 1430 is formed in the application gun 1102. The communication port 1433 communicates with a fluid passage 1432 formed in the coupling 1114. The application gun 1102 has an end cap 1136 at its end. The discharge flow passage 1434 of the second flow passage 1430 communicating with the fluid passage 1432 extends from the communication port 1433 through the end cap 1136. The applicator 1100 also includes a discharge valve 1131 installed in the application gun 1102 and configured to open and close the discharge flow path 1434. The discharge valve 1131 opens the discharge passage 1434 to discharge a part of the pressurized sealer in the chamber 1111.

The discharge valve 1131 includes a valve seat 1132 disposed in the discharge passage 1434 inside the end cap 1136 and having a discharge port 1133, and a needle-shaped valve body that opens or closes the discharge port 1133. 1134). The valve body 1134 is movable in the vertical direction, for example, and biased toward the valve seat 1132 by a spring 1135. The discharge valve 1131 is configured to move the valve body 1134 by pneumatic pressure, and the application gun 1102 has a port 1139 through which compressed air is supplied or exhausted. To the end cap 1132, a nozzle 1138 in communication with the discharge passage 1434 is removably attached via a coupling nut 1137. The nozzle port of the nozzle 1138 may have a shape such as a circle, a rectangle, an ellipse, or the like, depending on the width of the roof ditches 123.

8, 9, 12, 14, and 16, the applicator 1100 may include a second valve 1150 installed in the second flow path 1430 and configured to open and close the second flow path 1430. Include. The second valve 1150 is fluidly connected to the discharge passage 1434 of the application gun 1102. In this embodiment, the second flow passage 1430 has a communication flow passage 1435 branching from the discharge flow passage 1434 and extending to the second valve 1150 side. The communication flow path 1435 extends through the end cap 1136 of the application gun 1102. The second valve 1150 is coupled with the application gun 1102 to communicate with the communication passage 1435. The second valve 1150 has an end cap 1155 that is fluidly coupled to the end cap 1136 of the application gun 1102. The second valve 1150 has a valve seat 1151, a needle shaped valve body 1152, and a spring 1153 biasing the valve body 1152 to the valve seat 1151 side. The valve body 1152 of the second valve 1150 may open and close by pneumatic pressure and a biasing force of the spring 1153. An outlet port 1154 through which the sealer flows is formed in the second valve 1150. The second flow passage 1430 has a return flow passage 1436 extending from the end cap 1155 to the outlet port 1154 within the second valve 1150. As shown in FIGS. 8 and 9, the outlet port 1154 and the second manifold 1422 are connected with a sealer hose 1435, and the second hose 1412 is connected with the second manifold 1422. do. The second flow path 1430 is fluidly connected to the second hose 1412 and the first flow path 1420 through the second manifold 1422.

With the first flow passage 1420 located in the applicator 1100 of the sealer circulation flow passage 1400, the sealer is driven from the first hose 1411 by the first manifold 1421, the injection valve 1160 and the injection flow passage (1). And flows into chamber 1111 of booster 1101 through 1423. In addition, the sealer flows from the first hose 1411 to the second hose 1412 through the first manifold 1421 and the first valve 1140 by the first flow path 1420. In this embodiment, the first flow passage 1420 includes a fluid passage inside the first manifold 1421, a fluid passage inside the injection valve 1160, an injection passage 1423, a chamber 1111, A fluid passage within the first valve 1140 and a fluid passage within the second manifold 1422 may be included. The second flow path 1430 positioned in the applicator 1100 of the sealer circulation flow path 1400 extends from the first flow path 1420 through the application gun 1102 and is connected to the first flow path 1420. The sealer flows from the chamber 1111 to the second hose 1412 through the application gun 1102 and the second valve 1150. In this embodiment, the second flow path 1430 includes the chamber 1111, the fluid passage 1431 of the end cap 1113, the fluid passage 1432 of the coupling 1114, and the application gun 1102. The discharge passage 1434, the return passage 1434 inside the second valve 1150, and a sealer hose 1435 between the second valve 1150 and the second manifold 1422. The first valve 1140 opens and closes the first flow path 1420 and does not allow the sealer to flow through the first flow path 1420. The second valve 1150 opens and closes the second flow path 1430, so that the sealer does not flow or flow through the second flow path 1430.

The applicator 1100 of the sealer application apparatus according to this embodiment is operated in one of an active mode and an inactive mode. In the active mode, the applicator 1100 continuously applies the sealer to the loop dish 123. In the inactive mode, the application operation is paused and the applicator 1100 does not perform the application operation. In the active mode, the sealer may flow through the first flow path 1420 into the chamber 1111 of the booster housing 1112. In addition, in the active mode, the sealer may flow from the first hose 1411 to the second hose 1412 and circulate through the first flow path 1420. In addition, in the active mode, the booster 1101 may pressurize and extrude the sealer in the chamber 1111 such that a portion of the pressurized sealer may be delivered to the application gun 1102 and discharged through the nozzle 1138. In the inactive mode, the sealer is not discharged through the application gun 1102, and the sealer may flow through the flow path passing through the chamber 1111 and the second flow path 1430 of the first flow path 1420. That is, in the inactive mode, the sealer is circulated through the second flow path 1430 passing through the application gun 1102. Accordingly, in the inactive mode, the sealer application device 1000 flows the sealer to the application gun 1102 and circulates through the second flow path 1430.

The sealer applying apparatus 1000 according to an embodiment includes a controller for controlling the operation of the applicator 1100 such that the applicator 1100 operates in one of an active mode and an inactive mode. In this embodiment, the operation of the applicator 1100 is controlled by the controller 1600.

As shown in Figs. 8 and 9, in this embodiment, the applicator 1100 includes a pressure distributor 1171 near the top. The pressure distributor 1171 may operate the operating medium (eg, pneumatic) to selectively operate the valve bodies of the first valve 1140, the second valve 1150, the injection valve 1160, and the discharge valve 1131. Configured to dispense with a valve. Compressed air is delivered to the pressure distributor 1171 from a pressure source. Pressure dispenser 1171 may include a valve actuated by a solenoid actuator. The pressure distributor 1171, the first valve 1140, the second valve 1150, the injection valve 1160, and the discharge valve 1131 are connected through an air hose. Compressed air from the pressure distributor 1171 is delivered to each of the first valve 1140, the second valve 1150, the injection valve 1160, and the discharge valve 1131, thereby providing a first valve 1140, a second valve. The valve bodies of the valve 1150, the injection valve 1160, and the discharge valve 1131 are selectively driven. The controller 1600 may control the operation of the pressure distributor 1171 to control the operation of each of the first valve 1140, the second valve 1150, the injection valve 1160, and the discharge valve 1131. In addition, a terminal box 1172 is attached near the upper end of the applicator 1100. Conductors for signal transmission between the controller 1600 and the applicator 1100 are connected to the terminal box 1172.

In this embodiment, in the active mode and the inactive mode of the applicator 1100, the controller 1600 operates the first valve 1140, the second valve 1150, the injection valve 1160 and the discharge valve 1131. It is configured to control. In the active mode, the controller 1600 opens the first valve 1140 and the inlet valve 1160 and closes the discharge valve 1131 and the second valve 1150. Accordingly, the sealer is injected into the chamber 1111, the chamber 1111 is filled with the sealer, and the sealer is circulated through the first flow path 1420. In addition, in the active mode, the controller 1600 closes the injection valve 1160 and the discharge valve 1131 and operates the booster 1101 to pressurize the sealer in the chamber 1111. In addition, in the active mode, the controller 1600 closes the injection valve 1160 and the second valve 1150 and opens the discharge valve 1131. As a result, a part of the pressurized sealer in the chamber 1111 is discharged to the roof dish 123 through the application gun 1102. As another example, in the active mode, the booster 1101 may depressurize the sealer in the chamber 1111. In the inactive mode, the controller 1600 opens the injection valve 1160 and the second valve 1150 and closes the first valve 1140 and the discharge valve 1131. Accordingly, the sealer is circulated through the second flow path 1430.

Controller 1600 may allow an operator to select one of an active mode and an inactive mode of applicator 1100. For example, the controller 1600 may display the screen 1950 illustrated in FIG. 15 on the display device 1610. The screen 1950 includes a key 1951 for the active mode, a key 1952 for the inactive mode, a key 1953 for circulating the sealer, and a display field 1954 for displaying the circulation speed of the sealer. Can have The operator may input a command regarding the operation of the applicator 1100 or the sealer applicator 1000 by touching the keys 1951, 1832, 1833 or using an input device connected to the controller 1600. When a command is entered via key 1951, controller 1600 operates applicator 1100 in active mode. Accordingly, the sealer may be applied to the roof deitch 123 of each vehicle body by the applicator 1100, and may be circulated through the sealer circulation flow path 1400.

When a command is input through the key 1952 in the state where the application to the vehicle body 120 is temporarily stopped in the assembly line 110, the controller 1600 operates the applicator 1100 in an inactive mode. In this case, the sealer may be circulated through the sealer circulation channel 1400 without being discharged by the applicator 1100. When a command is input through the key 1953, the sealer applying apparatus 1000 may circulate the sealer through the sealer circulation flow path 1400. When the circulation speed of the sealer is input through the display field 1954 or by the input device, the controller 1600 controls the circulation pump 1200 so that the sealer applying device 1000 circulates the sealer in response to the input circulation speed. You can.

In the sealer applying apparatus of the embodiment, the booster 1101 is configured to apply an initial pressure necessary for application to the sealer in the chamber 1111 by decompressing (expanding) or pressing (compressing) the sealer introduced into the chamber 1111. In addition, the booster 1101 is configured to extrude the reduced or pressurized sealer from the chamber 1111. For application of initial pressure to the sealer and extrusion of the sealer, a booster 1101 according to one embodiment includes a ram 1121, a portion of which is disposed in the chamber 1111 to depressurize, pressurize, and extrude the sealer. Further, in the sealer applying apparatus of the embodiment, the booster 1101 is configured to adjust the initial pressure of the sealer and to adjust the coating amount of the sealer. To this end, the booster 1101 includes a servo drive device 1122 that can be controlled by the controller 1600. The servo drive device 1122 is configured to drive the ram 1121, and can adjust the initial pressure of the sealer, the discharge pressure of the sealer, and the coating amount of the sealer together with the ram 1121. The initial pressure applied by the booster 1101 to the sealer may be greater than or less than the pressure applied by the sealer circulation pump 1200 or the sealer source 1500 to the sealer depending on the application pattern. For example, the pressure of the sealer introduced into the chamber 1111 may be lower than the initial pressure required for application. In this case, the ram 1121 in the booster 1101 is lowered by the servo drive device 1122, so that the initial pressure required for application can be applied to the sealer. As another example, the pressure of the sealer introduced into the chamber 1111 may be higher than the initial pressure required for application. In this case, the ram 1121 in the booster 1101 can be raised by the servo drive device 1122 to apply an initial pressure necessary for application to the sealer.

In this embodiment, the servo drive device 1122 is coupled to the booster housing 1112 via a connection bar 1181 and a ram 1121. The servo drive device 1122 includes a servo motor 1123 controlled by the controller 1600 to generate forward and reverse rotation, a speed reducer 1124 operatively coupled to a rotation shaft of the servo motor 1123, and a speed reducer ( And a screw shaft 1125 coupled to the rotating shaft of 1124 and operatively connected to the servo motor 1123. Forward and reverse rotation of the servo motor 1123 causes the screw shaft 1125 to forward and reverse rotation. The ram 1121 is positioned in the booster 1101 so that its tip and adjacent portions are located inside the chamber 1111. The ram 1121 is tightly penetrated through the packing assembly 1115 and is located in the chamber 1111. The ram 1121 has a cylindrical shape and has a closed lower end and a bore formed along the longitudinal direction. A portion of screw shaft 1125 is located in the bore of ram 1121. The lubricant supply unit 1116 and the packing assembly 1115 are in communication with each other so that the lubricant oil of the lubricant supply unit 1116 is supplied to the ram 1121 through the packing assembly 1115. The sealer, which may leak by the operation of the ram 1121, may be directed to the lubricating oil supply 1116.

In this embodiment, the servo drive device 1122 includes a motor mount 1126 with a bearing, a plurality of guide rods 1127 coupled to the motor mount 1126 and the booster housing 1112, and a guide rod. And a movable nut 1128 that is linearly guided by 1127 and screwed with the screw shaft 1125. The assembly of the servo motor 1123 and the reducer 1124 is coupled to the motor mount 1126. The screwless portion of the screw shaft 1125 is located in the motor mount 1126 and is supported by a bearing in the motor mount 1126. The guide rod 1127 extends through the movable nut 1128 and extends in the longitudinal direction of the booster 1101. Accordingly, the rotation about the screw shaft 1125 of the movable nut 1128 is regulated by the guide rod 1127, so that the movable nut 1128 moves along the guide rod 1127. The bottom surface of the movable nut 1128 is in contact with and separated from the top surface of the ram 1121. As the screw shaft 1125 rotates forward and backward, the movable nut 1128 moves up and down along the guide rod 1127. The ram 1121, which is in surface contact with the movable nut 1128, is pushed by the movable nut 1128 when the movable nut 1128 is moved to the booster housing 1112 side, and toward the end cap 1113 side of the booster 1101. Can be moved. That is, the ram 1121 is linearly moved toward the end cap 1113 by the rotation of the screw shaft 1125.

By the rotation of the screw shaft 1125 and the movement of the movable nut 1128 described above, a downward stroke of the ram 1121 to the end cap 1113 side is achieved. The upward stroke of the ram 1121 to the servo motor 1123 side can be achieved by the pressure of the sealer when the chamber 1111 is filled with the sealer again.

The servo drive device 1122 also includes a plurality of covers 1129 coupled to the motor mount 1126 and the booster housing 1112, and attached to one of the covers 1129 and configured to detect the position of the ram 1121. A position sensor 1830. The position sensor 1830 may include a proximity sensor. The position sensor 1830 is positioned to face an upper end of the ram 1121 when the ram 1121 is in an initial position where the sealer does not pressurize the sealer. The signal regarding the position of the ram 1121 detected by the position sensor 1830 is transmitted to the controller 1600, and the controller 1600 determines the position of the ram 1121 based on the signal of the position sensor 1830. can do.

After the chamber 1111 is filled with the sealer and the ram 1121 is in the initial position, the servo motor is driven by the controller 1600 with the injection valve 1160 and the discharge valve 1131 closed by the controller 1600. 1123 generates rotation at a predetermined rotational speed. Then, the ram 1121 is lowered by a set distance by the rotation of the screw shaft 1125 (that is, moved to the end cap 1113 side) so that the ram 1121 pressurizes and compresses the sealer in the chamber 1111. . Accordingly, the initial pressure is applied to the sealer in the chamber 1111 before the discharge of the sealer.

While the sealer flows into the chamber 1111 through the sealer circulation channel 1400, the pressure change of the circulation pump 1200 and the can pump 1530, the resulting pulsation, the resistance of the channel, and the like change the pressure and viscosity of the sealer. Let's do it. When the sealer whose pressure and viscosity are changed is simply discharged from the applicator 1100, the discharge amount and discharge speed of the sealer are not kept uniform, and the coating quality is not kept constant. As described above, the sealer applying apparatus 1000 applies the initial pressure to the sealer by the ram 1121 and the servo drive device 1122, and extrudes the sealer to which the initial pressure is applied, so that the sealer is described above. It can be applied without being affected by pressure conversion, pulsation, resistance, and the like.

Since the controller 1600 may control the servo motor 1123 and the rotation speed of the servo motor 1123 may be adjusted, the amount of movement of the ram 1121 may be controlled. That is, the amount of movement of the ram 1121 when the ram 1121 extrudes the sealer can be determined by the controller 1600. The value of the cross-sectional area of the chamber 1111 and the value of the cross-sectional area of the ram 1121 are constant. Accordingly, when the movement amount of the ram 1121 is determined, the volume of the sealer discharged from the application gun 1102 can be determined by the controller 1600. In this manner, by the controller 1600 controlling the rotation speed of the servo motor 1123, the sealer application device 1000 can control the application amount of the sealer and change the application amount of the sealer during application.

With reference to FIGS. 1-17, the sealer coating method for vehicle bodies which concerns on an Example is demonstrated.

In the method of applying a sealer for a vehicle body according to an exemplary embodiment, the sealer is applied to the surface of the vehicle body 120 (for example, the roof dish 123) by the sealer circulation passage 1400 formed in a closed circuit. As an example, the sealer circulation flow path 1400 includes a first flow path 1420 through the booster 1101. As another example, the sealer circulation flow path 1400 further includes a second flow path 1430 that extends from the first flow path 1420 through the application gun 1102 coupled to the booster 1101. The sealer coating method for a vehicle body according to the embodiment may include some or all of the steps S110, S111, S120, S121, S130, S140 and S150 illustrated in FIG. 17. For example, the sealer applying method for a vehicle body according to an embodiment includes steps S110, S120, and S130. According to another embodiment, a sealer applying method for a vehicle body includes steps S110, S120, S130, and S140. According to yet another embodiment, a method of applying a sealer for a vehicle body includes steps S110, S120, S130, S140, and S150. These steps may be performed sequentially, at least two or more steps may be performed simultaneously, or one step may be performed dependent on another step.

According to step S110, the temperature of the sealer is adjusted by the sealer temperature regulator 1300 to a set temperature (eg, 25 ° C.) or a set temperature range (eg, 23 ° C. to 27 ° C.). This step S110 may include heating or cooling the sealer to a set temperature or a set temperature range by the thermoelectric element 1330 (S111).

According to step S120, the sealer adjusted to the set temperature is discharged from the booster 1101. This step (S120) may include a step (S121) of depressurizing or pressurizing the sealer adjusted to the set temperature or the set temperature range by the booster 1101.

According to step S130, the sealer adjusted to the set temperature is circulated only through the first flow path 1420. For example, the sealer adjusted to the set temperature by the circulation pump 1200 may be circulated through the first flow path 1420 and the sealer circulation flow path 1400.

Discharging the sealer (S120) and circulating the sealer only through the first flow path 1420 (S130) may be performed at the same time. That is, according to the above-described active mode of the coating gun 1102, the discharge of the sealer and the circulation through only the first flow path 1420 of the sealer may be simultaneously performed.

According to step S140, the sealer adjusted to the set temperature is circulated through the first flow path 1420 and the second flow path 1430. That is, the sealer may be circulated through the first flow path 1420, the second flow path 1430, and the sealer circulation flow path 1400 according to the inactive mode of the coating gun 1102 described above.

According to step S150, the sealer circulation flow path (such that the sealer adjusted to the set temperature or the set temperature range is circulated through only the first flow path 1420 or circulated through the first flow path 1420 and the second flow path 1430). 1400 is controlled. Such control may be performed by the controller 1600 selectively operating the first valve 1140 and the second valve 1150 installed in the first flow path 1420 and the second flow path 1430, respectively.

In another embodiment, one or more of applicator 1100, valve of applicator 1100, circulation pump 1200, sealer temperature regulator 1300 may not be controlled by controller 1600 and may be individually controlled. It may have a component for and may be configured to be operated directly by the operator. For example, the circulation pump 1200 or the sealer temperature regulator 1300 may have a controller therein that executes the operation at predetermined operating conditions. In addition, applicator 1100 may be provided with a controller to effect operation in the active and inactive modes described above. In addition, the valves of the applicator 1100 are not controlled by a controller and may be configured to be operated directly by an operator.

As another example, the applicator 1100, the circulation pump 1200, and the sealer temperature regulator 1300 may be connected indirectly or in parallel to the sealer circulation passage 1400. That is, the applicator 1100, the circulation pump 1200, and the sealer temperature controller 1300 may be connected to the sealer circulation flow path 1400 so as to enable fluid flow to enable the inflow and outflow of the sealer.

As another example, the components for heating and cooling of the sealer temperature regulator 1300 are not limited to the thermoelectric element 1330. Any heat exchanger capable of heating and cooling the temperature of the sealer to a set temperature or a set temperature range may be used as the sealer temperature regulator 1300.

In another embodiment, the ram 1121 may be directly screwed into the screw shaft 1125. Such an embodiment may include a guide component that prevents rotation about the screw shaft 1125 of the ram 1121 and allows the ram 1121 to move along the screw shaft 1125.

In another embodiment, the first valve 1140 and the second valve 1150 may be installed in the sealer circulation passage 1400 adjacent to the applicator 1100 without being attached to the applicator 1100.

In another embodiment, the second flow path 1430 may not be connected to the first flow path 1420 in the second manifold 1422. That is, unlike the above-described embodiment, the second flow path 1430 may be directly connected to the second hose 1412.

In another embodiment, the sealer applying apparatus may not include the robot 1700. In such an embodiment, the applicator 1100 may be supported by a component that movably supports the applicator 1100, and an operator may apply the sealer to the surface of the vehicle body 120 using the applicator 1100. Can be.

While the technical spirit of the present disclosure has been described with reference to some embodiments and the examples shown in the accompanying drawings, the technical spirit and scope of the present disclosure may be understood by those skilled in the art. It will be appreciated that various substitutions, modifications, and alterations can be made in the scope. Also, such substitutions, modifications and variations are intended to be included within the scope of the appended claims.

120: body, 121: roof panel, 122: side panel, 123: roof dish, 1000: sealer coating device, 1100: applicator, 1101: booster, 1102: coating gun, 1111: chamber, 1121: ram, 1122: servo Drive device, 1123: servo motor, 1125: screw shaft, 1140: first valve, 1150: second valve, 1200: circulation pump, 1300: sealer temperature regulator, 1330: thermoelectric element, 1400: sealer circulation flow path, 1414: pipe 1420: first flow path, 1430: second flow path, 1500: sealer source, 1600: controller, 1700: robot, 1810: temperature detection sensor

Claims (20)

It is a sealer application device for a vehicle body which applies a sealer to the surface of a vehicle body,
A circulation pump configured to pump the sealer,
A sealer temperature controller for adjusting the temperature of the sealer to a set temperature;
An applicator for applying the sealer adjusted to the set temperature to the surface of the vehicle body;
A sealer circulation flow path formed of a closed circuit passing through the applicator, the circulation pump and the sealer temperature regulator, wherein the sealer adjusted to the set temperature by the sealer temperature regulator is circulated by the circulation pump;
A sealer source connected to the sealer circulation passage;
The applicator has a chamber in which the sealer is introduced and received, a booster for extruding a sealer in the chamber, and an application coupled to the booster to communicate with the chamber and configured to discharge a portion of the sealer in the chamber to the surface of the vehicle body. Including the gun,
The sealer circulation flow path includes first and second flow paths in which the sealer located in the applicator and adjusted to the set temperature is circulated,
The first flow path includes an injection flow path through which the sealer adjusted to the set temperature flows into the chamber,
The second flow passage is connected to the first flow passage from the chamber through the interior of the application gun,
The second flow path includes a discharge flow path formed inside the coating gun,
The application gun comprises a nozzle adjacent the discharge flow passage and in communication with the discharge flow passage, the sealer being discharged;
The applicator is configured such that the sealer adjusted to the set temperature is circulated through the first flow path and flows through the injection flow path to the chamber and is transferred from the chamber to the application gun by the booster and discharged through the application gun. Operated in one of an active mode and an inactive mode in which the sealer adjusted to the set temperature is circulated from the injection passage through the chamber and the second passage and is not discharged from the application gun,
Sealer coating device for vehicle body. delete delete The method of claim 1,
The first flow path includes a manifold connected to the injection flow path,
The applicator further includes a first valve installed in the first flow path and opening and closing the first flow path, and a second valve provided in the second flow path and opening and closing the second flow path,
Wherein the first flow path branches in the manifold so that the sealer flows into the chamber and the first valve in the active mode,
Sealer coating device for vehicle body. The method of claim 4, wherein
And a controller for controlling the applicator such that the applicator is operated in any one of the active mode and the inactive mode.
Sealer coating device for vehicle body. The method of claim 5,
In the active mode the controller opens the first valve and closes the second valve,
In the inactive mode the controller opens the second valve and closes the first valve,
Sealer coating device for vehicle body. The method of claim 5,
The booster further includes a ram for extruding a sealer in the chamber.
Sealer coating device for vehicle body. The method of claim 7, wherein
The booster further includes a servo drive device controlled by the controller and configured to drive the ram,
The servo drive device includes a servo motor for generating rotation, and a screw shaft operatively connected to the servo motor and rotated by the servo motor,
The ram is moved linearly by rotation of the screw shaft,
Sealer coating device for vehicle body. The method of claim 1,
The sealer temperature regulator includes a plurality of thermoelectric elements configured to adjust or maintain the sealer at the set temperature.
Sealer coating device for vehicle body. The method of claim 9,
The sealer circulation passage includes a tube passing through the sealer temperature regulator.
Sealer coating device for vehicle body. The method of claim 1,
At least one temperature detection sensor mounted to the sealer circulation passage and configured to detect a temperature of the sealer,
The sealer temperature regulator is controlled based on the detected sealer temperature.
Sealer coating device for vehicle body. The method of claim 1,
The surface of the vehicle body includes a roof dent extending between the roof panel of the vehicle body and the side panel of the vehicle body,
The set temperature is in the range of 23 ℃ to 27 ℃,
Sealer coating device for vehicle body. delete The method of claim 1,
The robot further includes a robot for positioning the applicator on the surface of the vehicle body.
Sealer coating device for vehicle body. delete delete delete delete delete delete

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