JP2005131620A - Coating device for building board and washing device for coating gun - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating device capable of correctly and highly efficiently performing a uniform coating film width and a uniform film thickness to joints and to prevent a shutdown of coating work caused by a nozzle plugging of a coating gun. <P>SOLUTION: This is a washing device provided with a vertically moving frame 19 sliding along a guide rail 27 on both right and left sides as a longitudinal feeding mechanism 7 in a feeding device of a coating head 2, and the vertically moving frame 19 is reciprocated linearly by a both side drive type transmission mechanism with a common motor 29, and a pressure adjusting apparatus 11 of a coating material supplying system to the coating head 2 is arranged adjacently to the coating gun to wash the coating gun by a brush in the washing liquid. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a joint coating device and a coating gun cleaning device for a building board having a brick pattern or a tile pattern. The cleaning device is a type that cleans the tip of the coating gun from the outside.

As a conventional technique for coating joints, as described in JP-A-5-138116, an NC apparatus in which a spray gun or an ink jet apparatus is attached to the tip is known. As a cleaning device, the tip of the spray gun is usually immersed in a cleaning solution, and then the cleaning solution at the tip is blown off by an air jet.
JP-A-5-138116

  The painting method described in the above publication is simply to attach a spray gun or an ink jet device to the NC device when painting joints, and what kind of spray gun is used and under any conditions. Since specific techniques such as coating are not disclosed, other specific special means are necessary for implementation.

  Inkjet devices spray paint from a large number of micro nozzles, so the type and discharge rate of paint are limited, unsuitable for thick coating formation, and maintenance is extremely troublesome. Naturally, it is not suitable for painting, and the conventional method using a spray gun adopts a spray nozzle that is widely used, and the generated fine droplets adhere to unnecessary surroundings other than the joints. In addition to the need for taping as a pre-process, in order to obtain a good joint coating, it is necessary to make full use of various devices over a coating gun moving device, a coating gun management, and the like. In addition, since this type of coated material is as long as 3 m, the paint supply hose from the paint supply source to the spray gun is longer than that, and the bending is repeated as the spray gun moves. When the spray gun is moved at a high speed to achieve high-efficiency coating, the paint in the hose temporarily creates a pressure difference in the hose due to the inertia due to movement, and the supply pressure of the paint to the spray gun may change. understood. Therefore, there is a serious drawback that even if some measure is not taken against the pressure change in the hose during the movement of the spray gun, unevenness of the width and thickness of the coating film occurs and it becomes difficult to form a uniform coating film.

  In addition, because the nozzle nozzle is narrow in all cases, the paint on the nozzle is likely to dry and clog the nozzle when painting is suspended and on standby. It is a well-known fact that nozzle clogging is extremely uneconomical because work efficiency decreases, such as when the nozzle is clogged, it is necessary to stop the painting operation due to nozzle replacement.

  Also, with regard to the cleaning device, it is not sufficient to immerse the tip of the gun in the cleaning solution.Therefore, if the cleaning solution adhering to the tip of the gun is blown off by the air jet, the droplets generated by the air jet are surrounded by the surroundings. Not only is a facility such as a hood required to prevent adhesion, but such a facility is unsuitable because it interferes with a series of high-speed painting operations. In addition, when coating is started simply by immersing the tip of the gun in the cleaning solution, the droplets adhering to the tip of the gun are accompanied by the spray paint, and the start of the paint film is formed by the diluted paint. There is a disadvantage that the width is expanded and a thin film is formed. In order to avoid abnormalities at the beginning of the coating, it is effective to remove the adhering droplets by instantaneous spraying, which is called discarding blow immediately before the start of painting. It is necessary to have a facility to collect paint and to prevent splashes caused by spraying.

  Accordingly, an object of the present invention is to provide a coating apparatus capable of accurately and efficiently performing coating with a uniform film thickness on the joint, and another object of the present invention is to perform a coating operation caused by nozzle clogging of a coating gun. An object of the present invention is to provide a painting apparatus capable of painting under non-stop conditions. Another object is to provide a cleaning device that can reliably and effectively clean the tip of the coating gun.

  In order to achieve the above object, according to the present invention, the guide rails 27 on both the left and right sides are used as the longitudinal feed mechanism 7 of the coating head 2 with respect to the workpiece W set on the support 1. A vertical moving frame 19 that slides on the same is provided, and the vertical moving frame 19 can be stably reciprocated in spite of high-speed movement by a double-sided drive transmission mechanism using a common motor 29. A pressure regulator 11 of the supply system is provided in the vicinity of the coating gun, thereby suppressing a change in the paint pressure in the paint supply hose which is likely to occur with movement, and supplying the paint to the coating gun under a constant pressure. It is characterized by being able to paint with uniform coating width and film thickness.

  According to the second aspect of the present invention, a plurality of vertical joint coating guns 10a are attached to a mounting frame 9 provided in the coating head 2 at a horizontal interval corresponding to the pitch of the vertical joints w in the article W. The horizontal joint coating guns 10b are attached to each other at a front-rear interval corresponding to the pitch of the horizontal joint w in the article W, whereby a plurality of parallel joints w can be applied in one stroke. The coating apparatus according to claim 1, which is configured as described above.

  The invention of claim 3 is provided with a cleaning tank 36 in which the tip of the coating gun is immersed in the standby state of the coating head 2, and a cleaning brush 39 slidably contacting the tip of the coating gun is provided in the cleaning tank 36. The coating apparatus according to claim 1 or 2, wherein the tip of the coating gun is washed from the outside at the time when the coating cycle is separated to prevent adhesion of paint and nozzle clogging at the tip of the gun.

  A fourth aspect of the present invention is the coating apparatus according to any one of the first to third aspects, wherein a fan-injection type airless nozzle is adopted as the nozzle in the coating gun.

  According to the fifth aspect of the present invention, a cleaning tank 36 in which the tip of the coating gun is immersed is provided, and a cleaning brush 39 slidably contacting the tip of the coating gun is provided in the cleaning tank 36, and the edge of the cleaning tank 36 or the cleaning is provided. A wiping brush 53 with which the tip of the coating gun is rubbed is provided at a position close to the tank 36, and the cleaning droplet adhering to the tip of the coating gun is removed by the wiping brush 53. This is a cleaning device.

  The invention of claim 6 is provided with a cleaning tank 36 in which the tip of the coating gun is immersed, and in the cleaning tank 36, a plurality of sliding guns are simultaneously brought into sliding contact with each other in a state corresponding to the tips of the plurality of coating guns. A cleaning device for a coating gun is provided with a cleaning brush 39 for simultaneously sliding the coating guns in sliding contact.

  According to the seventh aspect of the present invention, a plurality of rotary shafts 40 having a required number of rotary cleaning brushes 39 fixed thereto are provided in a parallel state, and the rotary shaft 40 is detachably supported on the bearing portion 41 while being transmitted and received. The coating gun cleaning device according to claim 6, wherein the bearing portions 41 are arranged side by side in a state adjacent to each other at a constant interval in the front-rear direction so that they can be driven by each other and the interval between the rotary shafts 40 can be changed.

  According to the first aspect of the present invention, the longitudinal feed mechanism 7 is provided with the longitudinal motion frame 19 that slides on the guide rails 27 on both the left and right sides, and the longitudinal motion frame 19 is reciprocated by the both-side drive type transmission mechanism by the common motor 29. Thus, both ends of the longitudinal moving frame 19 are actively and reciprocated simultaneously at the same time, and therefore the longitudinal moving frame 19 that is long to the left and right is stably reciprocated without swinging despite high-speed movement. Can be made. Further, since the pressure regulator 11 for the paint supply system to the paint head 2 is provided in the paint head 2 close to the paint gun, the paint supply pressure due to the inertia of the paint in the hose that is likely to occur due to the high-speed movement of the paint head 2 is thereby achieved. The paint can be supplied to the coating gun under a stable supply pressure while suppressing changes as much as possible, and can be applied with a stable coating width and coating thickness. There was no problem even if the high-speed linear movement of about sec was performed, and the coating cycle was also speeded up by several tens of seconds.

  According to the second aspect of the present invention, the plurality of vertical joint coating guns 10a are attached to the coating head 2 at the left and right intervals corresponding to the pitch of the vertical joints w, and the plurality of horizontal joint coating guns 10b are mounted. It is installed under the front and back intervals corresponding to the pitch of the horizontal joint w, and a plurality of parallel joints w are painted under one stroke. Compared to the conventional device that uses a common coating gun by turning 90 ° to the vertical joint w and the horizontal joint w, the structure of the coating gun itself is remarkably high efficiency compared to the case where the joint w is painted. It is simple and easy to adjust the position.

  According to the invention of claim 3, the cleaning tank 36 in which the tips of the coating guns 10 a and 10 b are immersed in the standby state of the coating head 2 is provided, and the cleaning brush 39 slidably contacting the tip of the coating gun is provided in the cleaning tank 36. It is attached and the tip of the paint gun is washed from the outside in the cleaning liquid at the break of the painting cycle, and the nozzle tip is washed using the standby state. Even if it is a paint that is easy to solidify without being incorporated, it is possible to reliably prevent adhesion and nozzle clogging, and it is possible to paint with high efficiency while avoiding interruption of the painting operation due to nozzle clogging.

  According to the fourth aspect of the present invention, when a fan-type airless nozzle is adopted as the nozzle in the coating gun, the spray liquid film is formed in a fan shape, and the coating width can be easily adjusted by adjusting the coating distance and / or the coating pressure. Yes, it can cope with a wide range of joints w.

  According to the fifth aspect of the present invention, the wiping brush 53 on which the tip of the coating gun is rubbed is attached to the edge of the cleaning tank 39 or a position close to the cleaning tank 39, and the tip of the coating gun after cleaning with the cleaning brush 39 is attached. Since the cleaning droplets adhering to the surface are removed by the wiping brush 53, the paint at the start of spraying is not diluted with the cleaning droplets, and can be applied with a normal band width and film thickness at the start of coating. In addition to this, it is possible to prevent soiling of portions other than the joint w due to the expansion of the band width at the start of painting.

  According to the sixth aspect of the present invention, the cleaning brush 39 provided in the cleaning tank 36 in which the tip of the coating gun is immersed is brought into sliding contact with the tip of the plurality of coating guns in a state corresponding to each of them. As a result, a plurality of coating guns can be cleaned simultaneously with high efficiency.

  According to the seventh aspect of the present invention, since the rotary shaft 40 is detachably attached to the bearing portion 41 and the bearing portions 41 are arranged side by side in a state adjacent to each other at a constant interval, the interval between the front and rear rotary shafts 41 is increased. Therefore, it is possible to easily change the position of the cleaning brush 39 according to the change of the pitch of the joint w.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. As a coating apparatus to which the present invention is applied, for example, as shown in FIGS. 1 to 3, an object to be coated is used by a positioning apparatus (not shown). Under the condition that W is placed at a predetermined position on a support base 1 constituted by a plurality of lifting arms, the coating head 2 is fed up and down in the vertical direction under the control of the computer 3 and the control device 4. A feeding device having a mechanism 5, a lateral feed mechanism 6 in the left-right direction, and a vertical feed mechanism 7 in the front-rear direction is driven based on joint pattern data input in advance to the computer 3, and the coating head 2 is adapted to the joint w. While moving, a model is adopted in which a flat liquid film is sprayed from the coating gun in the coating head 2 onto the joint w of the article W in a timely manner, thereby applying a belt-like coating to the joint w.

  As shown in FIG. 1 and FIG. 7, the object W to be coated in the illustrated embodiment is either the left edge surface portion or the right edge surface portion of the rectangular plate-like wall material, and the front edge surface portion or the rear edge surface surface. Applying a wall material having vertical and horizontal joints w consisting of a stepped cutting part formed on either one of the parts and a groove on the surface cut several in the left-right direction, and two parallel sheets as one set Although it is to be painted, it may be a wall material having other brick patterns with joints in the vertical and horizontal directions, and it is natural that two sheets are not one set but one sheet or three or more sheets. .

  In order to carry the workpiece W into and out of the coating position, it is appropriate to adopt a belt conveyor or a roller conveyor. In the case of a belt conveyor (not shown), a plurality of parallel conveyors provided in the vicinity of the coating position. A plurality of long elevating arms are provided in parallel between the conveyor belts, and the object to be coated W in the process of being automatically conveyed from the previous apparatus by the belt conveyor has reached the coating position. At this time, a support base 1 is provided that is configured to appropriately move upward from the belt conveyor by the lifting arms and stop the progress.

  As a positioning device for the object W to be coated placed on the support base 1, the object to be coated is composed of a stopper that comes into contact with the front end of the object W and a pressing piece that presses the object W forward from the rear end. The front and rear portions of W are positioned, and a stopper that abuts on either the left or right side edge of the workpiece W and a pressing piece that presses the workpiece W from the other side edge in the stopper direction. The left and right parts are positioned, and after the positioning is completed, the stoppers and pressing pieces are retracted downward. A position sensor for monitoring the position of the object to be coated W is attached to monitor whether or not the object to be coated W is maintained at a predetermined position at a time when a stationary state including during the painting work is required. When the head is out of the predetermined position or when deformation such as warpage is found in the workpiece W, an alarm is issued along with the stop of the equipment related to the painting work. An optical sensor using a laser beam is suitable as the position sensor.

  The painting head 2 is provided with an elevating frame 8 that moves vertically up and down by a saddle feed mechanism 5, and a mounting frame 9 is fixed to the lower end of the elevating frame 8. The mounting frame 9 is coated with two vertical joints. The guns 10a are mounted at the left and right intervals corresponding to the pitch of the parallel workpieces W, and the two horizontal joint coating guns 10b are arranged at the front and rear intervals corresponding to the pitch of the horizontal joints w of the workpieces W. Install to. In the illustrated embodiment, a total of four vertical joint coating guns 10a and two horizontal joint coating guns 10b are attached, but the number can be increased or decreased as appropriate depending on the pattern of joints w. . It is important that the other coating guns 10a and 10b are mounted so that their positions can be adjusted so that the coating guns 10a and 10b can accurately match the pitch of the joints w.

  Further, the inlet side pressure regulator 11 and the outlet side pressure regulator 12 in the paint supply system to the coating guns 10a and 10b are attached near the lower ends of the mounting frame 9 and the lifting frame 8. When the outlet side pressure regulator 12 is not used in the paint supply system, only the inlet side pressure regulator 11 needs to be attached.

  The elevating frame 8 includes four sliding shafts 15 facing the linear bearings 14 provided on the lateral movement frame 13, a female screw 16 fixed to the sliding shaft 15, and a ball screw 17 screwed to the female screw 16. The ball screw 17 is rotated by the servo motor 18 provided on the lateral movement frame 13 with the reduction gear interposed therebetween, and the lifting frame 8 including the slide shaft 15 and the like is lifted and lowered together with the female screw 16 along with the rotation. Thus, the scissor feed mechanism 5 is configured.

  The lateral movement frame 13 includes a slider 21 that engages with a guide rail 20 provided in the left-right direction on the vertical movement frame 19, and is configured to be slid in the left-right direction while being guided by the guide rail 20. A timing belt 25 is provided which is driven by a servo motor 22 provided on the longitudinal motion frame 19 with the speed reducer 23 and the timing pulley 24 interposed therebetween. The timing belt 25 is coupled to the lateral motion frame 13, and the timing belt 25 The lateral movement frame 13 is moved in the left-right direction by traveling, whereby the lateral feed mechanism 6 is configured.

  The longitudinal movement frame 19 includes sliders 28 that engage with guide rails 27 provided in the front-rear direction on both the left and right sides of the base 26, and is configured to be guided by the guide rails 27 and to slide in the front-rear direction. And a double-shaft type speed reducer 30 by a servo motor 29 provided on the base 26, a transmission shaft 31 extending from the speed reducer 30 in the left-right direction, and a timing pulley 32 fixed to the transmission shaft 31; Timing belts 34 that are driven under the intervention of a driven timing pulley 33 are provided on both the left and right sides, and the timing belts 34 are separately coupled to both end portions of the longitudinal movement frame 19 to synchronize the timing belt 34 with the longitudinal travel. The moving frame 19 is moved in the front-rear direction, and the high-speed linear movement is performed without swinging the vertical moving frame 19 by such a double-side drive type transmission mechanism. Les constituting the longitudinal feeding mechanism 7 by.

  Each of the servo motors 18, 22, 29 is controlled by the computer 3 and the control device 4, and the feed mechanism 5, the transverse feed mechanism 6, the longitudinal feed based on the joint pattern data and the program input in advance to the computer 3 are used. While the coating head 2 is moved corresponding to the joint w by the operation of the mechanism 7, a flat liquid film is sprayed from the respective coating guns 10a and 10b in the coating head 2 to the joint w of the article W in a timely manner. A band-like coating is applied to the joint w. Naturally, the opening / closing valves of the coating guns 10a and 10b are also operated by transmitting an opening / closing signal based on joint pattern data and a program input in advance to the computer 3.

  For the origin of each feed mechanism, that is, the saddle feed mechanism 5, the transverse feed mechanism 6, and the longitudinal feed mechanism 7, a proximity switch is provided for each, and each servo motor 18, 22, 29 is started in the proximity switch direction to become a proximity switch. The feed mechanisms 5, 6, and 7 are driven using the reached position as the origin.

  A cleaning device 35 for cleaning the tip of each coating gun 10a, 10b is provided at an appropriate position of the base 26. For example, as shown in detail in FIGS. 1, 2 and 5, the cleaning device 35 is provided with a cleaning tank 36 for containing a cleaning liquid 37 such as water and a heater 38 to improve the cleaning effect. The cleaning liquid 37 is heated as described above, and the cleaning tank 36 is provided so as to rotate constantly or in a timely manner while being immersed in the cleaning liquid 37 in the cleaning liquid 37. The cleaning brushes 39 are provided at four locations corresponding to the coating guns 10a and 10b. When the coating head 2 is moved onto the cleaning tank 36, the tips of the coating guns 10a and 10b are attached to the cleaning brushes 39 in the cleaning liquid 37. Try to slid all at once.

  As shown in detail in FIG. 5, the cleaning brush 39 is rotatably supported on the bearing portion 41 while being fixed to the rotary shaft 40 so as to be adjustable in the axial direction, and a passive sprocket wheel 42 is mounted on the rotary shaft 41. A transmission mechanism 50 comprising a motor 43 with a speed reducer, sprocket wheels 44, 45, 46, 47, 48 and a chain 49 is provided, and the passive sprocket wheel 42 is meshed with the horizontal traveling portion of the chain 49, The cleaning brush 39 is rotated as the chain 49 travels. As for the bearing portion 41, a plastic bearing having a U-groove notch portion is adopted and a simple structure in which the rotary shaft 40 is directly loosely fitted, or an oilless metal made of both ends of the rotary shaft 40 as shown in FIG. The bearing bush 51 is loosely fitted in advance, and the bearing bush 51 is fitted into the U-groove notch so as not to rotate. In the illustrated embodiment, the cleaning brush 39 is a rotary type, but is not limited to a rotary motion, and may be a reciprocating type or a vibration type.

  As the structure for attaching the cleaning brush 39 to the rotary shaft 40, a male screw is adopted as the rotary shaft 40 as shown in FIG. 6, and the cleaning brush 39 is clamped and fixed from both sides by using a female screw 52 screwed to the male screw. It is convenient to adjust the position of the cleaning brush 39 and increase / decrease the number.

  A plurality of bearings 41 for one side of the rotating shaft 40 are juxtaposed in a close proximity at a predetermined interval in the front-rear direction as shown in the left side of FIG. The interval between the two rotation axes can be changed by moving the rotation axis. In this way, it is desirable to transfer the rotary shaft 40 on one side as necessary when painting the workpiece W having different joint w intervals. In this case, the configuration in which the plurality of passive sprockets 42 are engaged with the horizontal traveling portion of the chain 49 is advantageous in that the rotating shaft 40 can be moved to the front and rear positions without changing the transmission mechanism 50.

  When the coating guns 10a and 10b in the coating head 2 are separated from the cleaning brush 39 to start coating, cleaning droplets adhere to the tips of the coating guns 10a and 10b, and these cleaning droplets are ejected at the start of coating. Not only is the diluted paint applied along with the paint, but the band width is enlarged and the parts other than the joint w are soiled. Therefore, it is important to remove the adhering cleaning droplets. A wiping brush 53 is attached to the edge of the cleaning tank 36 or a position close to the cleaning tank 36 so that the tip of the coating gun rubs, and the coating guns 10a and 10b move in the process of moving the coating head 2 toward the start of the coating operation. The cleaning droplet adhering to the tip is removed by the wiping brush 53. Although the wiping brush 53 is desirably in a dry state, there is no problem in wiping action even if it is wet with use. In addition, the installation position of the wiping brush 53 may be a position separated from the cleaning tank 36 for convenience.

  As a nozzle for injecting a flat liquid film to be used for the coating guns 10a and 10b, a slit nozzle may be used, but a trapezoidal nozzle formed by an appropriate intersection of an inner groove having a trapezoidal section and an outer groove having a substantially V-shaped section is provided. It is good to adopt an airless nozzle, and not only the paint splashes are scattered, but also the coating film width can be easily changed by adjusting the coating distance from the nozzle to the joint w because the sprayed liquid film is fan-shaped. .

  As for the supply of paint to the coating guns 10a and 10b, the coating gun is provided from a paint tank provided at a position separated from each feed mechanism through a pump, a heater for heating (not shown), and an inlet side pressure regulator 11. The paint supplied to the coating guns 10a and 10b is supplied with a constant pressure and the coating guns 10a and 10b are circulated through the coating guns 10a and 10b. For this purpose, it is made to return to the inlet of the pump through the outlet pressure regulator 12 for this purpose. The paint pressure is suitably 0.05 to 0.5 Mpa. The hoses and cables connected to the moving parts such as the coating head 2 are smoothly bent with the movement of the coating head 2 while being inserted into the protective hollow caterpillar-shaped cable bear in a collective state. It is good to be able to do it.

  Explaining the case of applying a belt-like coating to the joint w of the article W by the coating apparatus having the above configuration, the article W automatically transferred from the previous process part by the conveyor and placed on the support table 1 is as follows. It is left at a predetermined position by the positioning device. When the workpiece W is monitored by the position sensor to determine whether the workpiece W is held at a predetermined position at a time when the stationary state including the painting operation is necessary, and the workpiece W is out of the predetermined position Alternatively, when deformation such as warpage occurs in the article W itself, an alarm is issued along with the stop of the equipment related to the painting work by a signal from the position sensor to the computer 3.

  When the workpiece W is kept at a predetermined position and no abnormality is recognized by the position sensor, a series of painting operations are started in accordance with a program input in advance to the computer 3. The coating head 2 waiting in the cleaning device 35 is sequentially scanned in a state where the tips of the coating guns 10a and 10b correspond to the joints w of the workpiece W by the saddle feeding mechanism 5, the lateral feeding mechanism 6 and the vertical feeding mechanism 7. However, the tip of the coating guns 10a and 10b is moved in the process of moving the coating head 2 from the cleaning device 35 by the saddle feeding mechanism 5 prior to painting and then moving it horizontally by the lateral feeding mechanism 6 and the vertical feeding mechanism 7. Rubs against the wiping brush 53, and the wiping brush 53 removes the cleaning liquid, ie, water droplets, adhering to the tips of the coating guns 10a, 10b. Next, the tip of the coating guns 10a and 10b is sequentially scanned in a state corresponding to the joint w of the workpiece W by the saddle feeding mechanism 5, the lateral feeding mechanism 6 and the vertical feeding mechanism 7, and simultaneously the coating guns 10a and 10b are moved to the joint w. A liquid film-shaped coating is directed in a timely manner. The painting of the vertical joint w of the two articles W to be coated is performed in one stroke by two vertical joint painting guns 10a attached at left and right intervals, and the painting of the six horizontal joints w is performed. The two horizontal joint painting guns 10b attached at intervals in the front-rear direction are performed efficiently, for example, two by two in three strokes. The middle break temporarily stops the spraying by the paint gun 10b.

  When the painting of the joint w is completed, the coating head 2 is returned to the cleaning device 35 and waits, and the coating guns 10a and 10b are cleaned during the standby to prepare for the next painting operation. The painted object W is automatically conveyed to the drying apparatus in the next process.

  It is a top view of the coating apparatus of this invention.   It is sectional drawing in line II-II in FIG.   It is a side view of the principal part of the coating apparatus of FIG.   It is a slope view which shows arrangement | positioning of a coating gun, and a coating-film formation state.   It is a perspective view of the principal part of a washing | cleaning apparatus.   It is a vertical front view of the principal part of a washing | cleaning apparatus.   It is a perspective view of the principal part of a to-be-coated article.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support stand 2 Painting head 3 Computer 4 Control apparatus 5 竪 Feed mechanism 6 Horizontal feed mechanism 7 Vertical feed mechanism 9 Mounting frame 10a Vertical joint coating gun 10b Horizontal joint coating gun 19 Vertical moving frame 26 Base 27 Guide rail 29 Motor 36 Cleaning tank 39 Cleaning brush 40 Rotating shaft 41 Bearing portion 50 Transmission mechanism 53 Wiping brush W Coating material w Joint

Claims (7)

  Above the workpiece (W), a longitudinal feed mechanism (7) in the front-rear direction, a lateral feed mechanism (6) in the left-right direction, and a vertical feed mechanism (5) on the base (26). ) And a coating head (2) for jetting paint in a flat film shape, and a signal is sent to the feeding device to feed the coating head (2). ) Is moved corresponding to the joint (w), and a computer (3) for transmitting a control signal to the control device (4) is provided and set at a predetermined position on the support base (1). With respect to the object to be coated (W), the flat liquid is transferred from the coating gun in the coating head (2) while the coating head (2) is moved by the feeding device based on the joint pattern data input to the computer (3) in advance. Applying joints (w) on building boards that spray the membrane in a timely manner As the vertical feed mechanism (7), a vertical motion frame (19) that slides on guide rails (27) on both the left and right sides is provided as the vertical feed mechanism (7), and the vertical motion frame (19) is disposed on both sides by a common motor (29). A painting apparatus in which the paint head (2) is provided with a pressure regulator for a paint supply system to the painting head (2) so as to reciprocate by a drive type transmission mechanism.   A plurality of vertical joint coating guns (10a) are mounted on a mounting frame (9) provided on the coating head (2) with a left-right spacing corresponding to the pitch of the vertical joints (w) in the article to be coated (W). In addition, the coating apparatus according to claim 1, wherein a plurality of horizontal joint coating guns (10b) are attached at a longitudinal interval corresponding to the pitch of the horizontal joints (w) in the article to be coated (W).   A cleaning tank (36) in which the tip of the coating gun in the coating head (2) is immersed in the standby state of the coating head (2) is provided. In the cleaning tank (36), a cleaning brush (39) slidably contacting the tip of the coating gun is provided. The coating apparatus of Claim 1 or Claim 2 which attached.   The coating apparatus according to any one of claims 1 to 3, wherein a fan-type airless nozzle is adopted as a nozzle in the coating gun.   A cleaning tank (36) in which the tip of the coating gun is immersed in the coating head (2) is provided, and a cleaning brush (39) slidably contacting the tip of the coating gun is provided in the cleaning tank (36). 36) A wiping brush (53) for sliding the tip of the coating gun on the edge of the coating gun or a position close to the cleaning tank (36) is attached to wipe the cleaning droplets adhering to the tip of the coating gun (53). A cleaning device for a paint gun, characterized in that it is wiped off with   A cleaning tank (36) in which the tip of the coating gun in the coating head (2) is immersed is provided, and the cleaning tank (36) is slid together in a state corresponding to the tip of the plurality of coating guns. A cleaning device for a paint gun, which is provided with a cleaning brush (39) in contact therewith.   A plurality of rotating shafts (40) fixedly provided with a required number of rotary cleaning brushes (39) are provided in a parallel state, and the rotating shaft (40) is detachably supported on the bearing portion (41) while being transmitted detachably. The bearing portions (41) are arranged side by side adjacent to each other at a constant interval in the front-rear direction so that the distance between the rotary shafts (40) supported in a parallel state can be changed. Cleaning device for paint gun as described in 1.

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