JP2011230022A - Cup gun for powder coating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily eliminate a block phenomenon of a powder coating material A in a coating material cup 2 of a cup gun for powder coating, utilizing the movement of the cup gun for powder coating in coating work.SOLUTION: A moving body 6 moved by the operation of a gun body 1 in powder coating is installed on the outer surface or inner surface of the coating material cup 2, and the moving body 6 is allowed to collide with the outer surface or inner surface of the coating material cup 2 to apply vibration to the coating material cup 2. The powder coating material A is thereby prevented from sticking to the inner surface of the coating material cup 2 to prevent the occurrence of the block phenomenon of the powder coating material A.

Description

  The present invention relates to a powder coating gun with a paint cup in which a paint cup for storing a powder paint is attached to a gun body for injecting the powder paint, that is, a powder coating cup gun.

  Powder coating is expected as an environmentally friendly coating that does not contain organic solvents, as well as aqueous coating.

  In recent years, it is used not only for road materials but also for painting chairs, desks, partitions, etc. in offices and schools. In particular, the use of aluminum exterior building materials such as buildings is considered promising from the environmental point of view.

  By the way, when examining test sample colors such as exterior building materials or creating test pieces for paint manufacturers, small lots of multicolor coating are often performed.

  When performing multicolor coating in such a small lot, using a normal powder coating device that supplies powder paint from the paint tank to the gun body via a powder hose, the paint is changed every time a small lot of color is changed. It is necessary to frequently perform processes such as cleaning the tank, cleaning or replacing the powder coating hose, and cleaning the gun body.

  For this reason, when performing small lot powder coating or when creating test pieces, powder coating with a paint cup attached with a paint cup containing powder coating directly above or below the gun body A gun is often used (Patent Document 1). This powder coating cup gun has no powder coating hose, is easy to change colors, and is convenient for frequent color changes.

JP 2008-155149 A

  For example, as shown in FIG. 15, a conventional powder coating cup gun is provided with a paint cup 32 containing powder paint at the bottom of a gun body 31, and a perforated plate 33 is installed on the bottom surface of the paint cup 32. The powder paint A is sucked by the suction pipe 34 installed around the bottom surface in the paint cup 32.

  When the pressure inside the paint cup 32 becomes negative due to the suction of the powder paint A from the suction pipe 34, the outside air enters from the porous plate 33 on the bottom surface, and fluidizes around the entrance portion of the suction pipe 34, thereby stabilizing In this state, the powder coating material A can be supplied to the gun body 31.

  Similarly, as shown in FIG. 16, a conical paint cup 32 is installed in the upper rear part of the gun body 31, and an injector 35 as a suction device is installed in the lower part thereof. By suction of the injector 35, In some cases, the powder coating material A is conveyed to the gun body 31.

  In either case, even if the coating is smooth at the start, as time passes, the powder coating A adheres to the side wall of the coating cup 32 as shown in FIG. The powder coating A becomes blocked, a cavity is generated near the suction port of the suction pipe 34, and a breathing phenomenon occurs immediately, or the powder coating A is not sucked at all and only air is sucked. Many things happen. For this reason, paint flaws are generated on the test piece, the uniformity of the film thickness cannot be maintained, and sometimes a scale is generated.

  When such a phenomenon occurs, the operator must shake the powder coating cup gun greatly to eliminate the bridging phenomenon. There were times when it was done.

  In some cases, unpainted portions are left in the concave portions of the coated sample products.

In order to solve such a problem, it is conceivable to install an air vibrator as a bridge breaker in the paint cup. However, when the air vibrator is installed, the powder paint in the paint cup is blocked by the mechanical vibration. It is easy to cause, and the powder coating is hardened in the vicinity of the suction port of the suction tube, which may cause discharge abnormality.
Therefore, the present invention is intended to easily eliminate the powder coating block phenomenon in the powder coating cup gun using the movement of the powder coating cup gun during the painting operation. is there.

  In order to solve the above-mentioned problems, a powder coating cup gun according to the present invention has a moving body that is moved by the operation of a gun main body during powder coating on the outer or inner surface of a paint cup. Is made to collide with the outer surface or the inner surface of the paint cup so as to give vibration to the paint cup.

  The gun body may be operated hand-held or automatically by a reciprocator or a painting robot.

  As the moving body, there are rolling elements such as balls or rollers that move in the case, and a case for accommodating the rolling elements is installed on the outer surface or inner surface of the paint cup, and the gun body operates during powder coating. The rolling element moves in the case.

  Alternatively, the moving body may be a ring body that fits on the outer surface of the paint cup, and the ring body may collide with the outer surface of the paint cup by the operation of the gun body during powder coating.

  In addition, a case that accommodates a movable ring body is provided in the paint cup by the operation of the gun body during powder coating, and this ring body collides with the inner surface of the paint cup so as to vibrate the paint cup. It may be.

  Also, as the moving body, a pendulum member that moves in a pendulum manner by the operation of the gun body during powder coating is used, and the pendulum member collides with the outer surface of the paint cup to give vibration to the paint cup. Good.

The pendulum member may be either a ring body fitted on the outer periphery of the paint cup or a block body suspended on the outer surface of the paint cup.

  In the cup gun for powder coating according to the present invention, a moving body such as a ball or a ring body is moved by the operation of the gun body during powder coating and collides with the outer surface or the inner surface of the paint cup.

  Because of this collision, the paint cup can be vibrated, so there is no adhesion of the powder paint to the inner wall of the paint cup, and no bridging phenomenon due to the powder paint in the paint cup, and the vibration is gentle to the powder paint. Since it is a vibration that does not apply stress, it can be applied in a stable state.

It is a partially cut front view showing an example of a powder coating cup gun according to the present invention. (A) is a plan view of the powder coating cup gun of FIG. 1, (b) is a plan view of the powder coating cup gun of FIG. 1 rotated 90 degrees, and (c) is a rolling element. It is a top view of the example which installed the case into four places around the paint cup of the cup gun for powder coating. It is a partial cutting front view which shows the other example of the cup gun for powder coatings concerning this invention. It is a partial cutting front view which shows the other example of the cup gun for powder coatings concerning this invention. It is a partial cutting front view which shows the other example of the cup gun for powder coatings concerning this invention. (A) is a partial cross-sectional plan view of the example of FIG. 5, (b) is a partial cross-sectional plan view showing an example in which three guide rods of the example of FIG. 5 are provided. It is a partial cutting front view which shows the other example of the cup gun for powder coatings concerning this invention. It is a partial cutting front view which shows the other example of the cup gun for powder coatings concerning this invention. It is a partial cutting front view of the example which installed the cup gun for powder coating concerning this invention in the reciprocator. FIG. 6 is a partially cut front view of another example in which the powder coating cup gun according to the present invention is installed in a reciprocator. FIG. 6 is a partially cut front view of another example in which the powder coating cup gun according to the present invention is installed in a reciprocator. FIG. 6 is a partially cut front view of another example in which the powder coating cup gun according to the present invention is installed in a reciprocator. FIG. 6 is a partially cut front view of another example in which the powder coating cup gun according to the present invention is installed in a reciprocator. It is a partial cutting front view which shows the other example of the cup gun for powder coatings concerning this invention. It is a partial cutting front view which shows the conventional cup gun for powder coating. It is a partial cutting front view which shows the other example of the conventional cup gun for powder coating. It is a partial cutting front view which shows the blocking phenomenon of the powder coating material produced with the conventional cup gun for powder coating.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
The powder coating cup gun of FIG. 1 is a hand-blown type, and a paint cup 2 is directly installed at the bottom of the gun body 1.

  A porous pad 3 is installed below the paint cup 2, and natural air enters the paint cup 2 from the porous pad 3.

  In the gun body 1, a suction tube 5 with an injector 4 as a suction device for transporting the powder coating material A is installed so as to be positioned near the upper portion of the porous pad 3 in the coating material cup 2. .

  On the outer peripheral wall of the paint cup 2, two cases 7 containing rolling elements 6 such as balls are placed in opposed positions.

  When the trigger 8 of the gun body 1 is turned ON, the suction air of the injector 4 is activated, and the suction of the powder coating material A starts from the entrance of the suction pipe 5. Since the inside of the paint cup 2 is sealed, natural air is forcibly sucked from the porous pad 3 and the powder paint around the porous pad 3 is fluidized, and the paint is sucked in a stable state.

  When using a hand-blow type powder coating cup gun, in general, in order to finish the coating uniformly, the gun is swung left and right with respect to the workpiece, for example, a test piece. The majority.

  In the embodiment of FIG. 1, the case 7 containing the rolling elements 6 is installed back and forth with respect to the gun handle as shown in FIG.

  However, as described above, in the case of hand-blown coating, most of the coating is performed by shaking the gun left and right. Therefore, as shown in FIG. It is better to place the case 7 containing the rolling elements 6 left and right with respect to the handle of the gun.

  By placing the case 7 containing the rolling element 6 on the left and right with respect to the gun handle, the rolling element 6 moves in the case 7 due to the shake and inclination of the gun, and the paint cup 2 in which the case 7 is installed The rolling element 6 collides with the outer wall. This collision is repeated many times. Since the paint cup 2 vibrates due to the collision of the rolling elements 6, the powder paint adhering to the inner wall of the paint cup 2 falls into the paint cup 2.

  Moreover, the bridge phenomenon in the paint cup 2 is eliminated by the vibration caused by the collision.

  For this reason, the operator can perform coating in a stable state without worrying about the state of the powder paint in the paint cup 2.

  In the embodiment of FIG. 1, the case 7 containing the rolling elements 6 is installed at the same height position on the left and right of the paint cup 2. However, by changing the height position as shown in FIG. The width can be increased.

  As described above, when spraying by hand, the gun is often shaken to the left and right, but when the gun is often moved back and forth, painting is often performed as shown in FIG. It is preferable that the case 7 containing the rolling elements 6 is installed at the front and rear of the gun handle.

In addition, as shown in FIG. 2 (c), the cases 7 containing the rolling elements 6 may be installed at four locations on the front, rear, left and right of the paint cup 2.
One or more rolling elements 6 may be accommodated in the case 7. Further, the rolling element 6 may have a roller shape other than the ball as long as it moves within the case 7.

  Further, in the above embodiment, the case 7 containing the rolling elements 6 is installed on the outer surface of the paint cup 2, but may be installed on the inner surface of the paint cup 2 as shown in FIG.

  Next, in FIG. 5, the moving body is a ring body 9 that fits on the outer surface of the paint cup 2, and the ring body 9 is made to collide with the outer surface of the paint cup 2 by the operation of the gun body during powder coating. It is an example.

  As shown in FIGS. 5 and 6A, the ring body 9 is supported by two guide rods 10 that project to positions facing the outer peripheral surface of the paint cup 2.

  The ring body 9 may be supported by three or more guide rods 10 as shown in FIG. 6 (b). However, as shown in FIGS. When supported by the two guide rods 10 projecting to the opposite positions of the outer peripheral surface of the cup 2, the ring body 9 is unstable on the outer peripheral surface of the paint cup 2 so that it can swing around the two guide rods 10 as fulcrums. Therefore, when the gun is moved by hand spray painting, the ring body 9 is greatly shaken and the ring body 9 collides with the outer peripheral surface of the paint cup 2.

  As a result, the vibration applied to the paint cup 2 also increases, and even a powder paint with poor fluidity attached to the side wall in the paint cup 2 does not easily form a cavity due to a bridge in the paint cup 2.

  In the embodiment described above, the ring body 9 is supported by the paint cup 2 by the guide rod 10. However, in the embodiment of FIG. 7, the ring body 9 is formed on the outer peripheral surface of the paint cup 2 without using the guide rod 10. A case 11 for housing 9 is attached.

  The embodiment of FIG. 8 is an example in which a case 11 that accommodates the ring body 9 is provided inside the paint cup 2.

  9 to 13 show an automatic coating machine in which a powder coating cup gun is attached to the reciprocator 12. A painting robot can also be used as an automatic painting machine.

  The powder coating cup gun used in this automatic coating machine has a cone-shaped paint cup 14 at the upper rear portion of the gun body 13.

  An injector 15 as a suction device is attached to the lower part of the paint cup 14, and the powder paint in the paint cup 14 is conveyed into the gun body 13 by the suction of the injector 15.

  The paint cup 14 reciprocates up and down by the reciprocator 12 together with the gun body 13.

  In the embodiment of FIG. 9, as in the embodiment of FIG. 1, the case 7 containing the rolling elements 6 is installed on the outer periphery of the paint cup 14 at the opposing position.

  Therefore, when the paint cup 14 reciprocates in the vertical direction together with the gun body 13 by the reciprocator 12, the rolling element 6 in the case 7 collides with the outer wall of the paint cup 14 and adheres to the inner wall of the paint cup 14 by the vibration. Since the powder coating material is removed and no cavity is formed by the powder coating bridge inside the coating cup 14, the coating can be performed in a stable state.

  The embodiment of FIG. 10 is an example in which the case 7 containing the rolling elements 6 is installed in the paint cup 14. However, when frequent color cleaning is performed, the paint cup 14 may interfere with cleaning. Since it is not desired to install such a case, it is desirable to provide the case 7 containing the rolling elements 6 on the outer surface of the paint cup 14 as shown in FIG.

  The embodiment of FIG. 11 is an example in which the ring body 9 is provided on the outer peripheral surface of the paint cup 14, as in the embodiment of FIG. 5, and the ring body 9 is supported by two guide bars 10.

  12 and 13 uses a pendulum member 16 that moves in a pendulum manner as the reciprocator 12 moves up and down as a moving body, and causes the pendulum member 16 to collide with the outer surface of the paint cup 14. It is intended to give vibration to.

  As the pendulum member 16, as shown in FIG. 12, a ring body 17 suspended and supported on the upper lid 18 of the paint cup 14, or a block body suspended and supported on the upper lid 18 of the paint cup 14 as shown in FIG. 13. 19 can be used.

  The ring body 17 or the block body 19 constituting the pendulum member 16 is preferably made of a relatively heavy metal or the like so that the paint cup 14 is vibrated when it collides with the paint cup 14.

  Next, the above embodiment shows an example in which the paint cups 2 and 14 are directly attached to the gun bodies 1 and 14. However, the embodiment of FIG. 14 has a gun body 21 and a paint cup on the gun holder 20. In this example, the gun body 21 and the injector 15 of the paint cup 22 are connected by a powder paint hose 23.

  In the embodiment of FIG. 14, as in the embodiment of FIG. 12, the ring body 17 is suspended and supported by the upper lid 24 of the paint cup 22, and the ring body 17 moves like a pendulum by the movement of the gun holder 20. The ring body 17 collides with the paint cup 22 to prevent the powder paint A from being blocked.

DESCRIPTION OF SYMBOLS 1 Gun body 2 Paint cup 3 Porous pad 4 Injector 5 Suction pipe 6 Rolling body 7 Case 8 Trigger 9 Ring body 10 Guide rod 11 Case 12 Reciprocator 13 Gun body 14 Paint cup 15 Injector 16 Pendulum member 17 Ring body 18 Top lid 19 Block body 20 Gun holder 21 Gun body 22 Paint cup 23 Powder paint hose 24 Top lid A Powder paint

Claims (10)

  In a powder coating cup gun in which a powder cup containing powder coating is attached to the gun body, a moving body that moves by the operation of the gun body during powder coating is installed on the outer surface or inner surface of the paint cup. A powder coating cup gun characterized in that a moving body is made to collide with an outer surface or an inner surface of a paint cup to give vibration to the paint cup.   2. A powder coating cup gun according to claim 1, wherein the coating is performed by operating the gun body by hand.   2. The powder coating cup gun according to claim 1, wherein the gun body is operated by a reciprocator or a painting robot to perform painting.   A case that houses rolling elements is installed on the outer surface of the paint cup, and the rolling element moves within the case due to the operation of the gun body during powder coating, and the rolling element collides with the outer surface of the paint cup. The cup gun for powder coating according to any one of claims 1 to 3, wherein vibration is applied to the cup.   A case that contains rolling elements is installed on the inner surface of the paint cup, and the rolling element moves within the case due to the operation of the gun body during powder coating, and the rolling element collides with the inner surface of the paint cup. The cup gun for powder coating according to any one of claims 1 to 3, wherein vibration is applied to the cup.   A movable ring body is fitted to the outer surface of the paint cup by the operation of the gun body during powder coating, and the ring body is caused to collide with the outer surface of the paint cup to give vibration to the paint cup. Item 4. A powder coating cup gun according to any one of Items 1 to 3.   In the paint cup, a case that accommodates a movable ring body is provided by the operation of the gun body during powder coating, and this ring body collides with the inner surface of the paint cup to give vibration to the paint cup. The cup gun for powder coating according to any one of claims 1 to 3.   A pendulum member that moves in a pendulum manner is installed on the outer surface of the paint cup by the operation of the gun body during powder coating, and this pendulum member collides with the outer surface of the paint cup to give vibration to the paint cup. The cup gun for powder coating according to any one of claims 1 to 3.   The powder coating cup gun according to claim 8, wherein the pendulum member is a ring body fitted on the outer periphery of the paint cup. The powder coating cup gun according to claim 8, wherein the pendulum member is a block body suspended from the outer surface of the paint cup.

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