JP3165976U - Spray gun paint container and spray gun - Google Patents

Abstract

A paint container for a spray gun capable of spraying paint regardless of the attitude of the spray gun and a spray gun to which the paint container is connected. A spray gun paint container for supplying a paint from a paint supply pipe protruding from an upper portion of the spray gun to a spray gun for spraying paint from an ejection port at a tip of a nozzle portion. A paint container 20 for containing the paint, a paint discharge tube 21 provided at the bottom of the paint container 20 for discharging the paint, and the paint discharge tube 21 being rotatable coaxially with respect to the paint supply tube 19. A central axis 200 of the paint container 20 is inclined with respect to an axis 210 of the paint discharge pipe 21. [Selection diagram] Fig. 1

Description

  The present invention relates to a spray gun paint container and a spray gun to which the spray gun paint container is connected.

  The spray gun is used, for example, to reproduce the spray pattern of a new chipping coat in automobile repair (see, for example, Patent Document 1). The paint container filled with the paint is attached to the paint supply port of the spray gun, and the spray gun sprays the paint supplied from the paint container from the ejection port at the tip of the paint nozzle while being mixed with the compressed air. Such spray guns are roughly classified into two types, a suction type that draws in paint using the force of compressed air and a gravity type that flows in using gravity, depending on the method of supplying the paint from the paint container to the spray gun. The

  In recent years, importance has been placed on environmental problems, and in the coating field, the transition from solvent-based paints that use organic solvents to water-based paints (water-based paints) that do not use organic solvents is progressing. However, water-based paints have properties that the viscosity of the paint is higher and the specific gravity is heavier than conventional solvent-based paints. Therefore, for the application of the water-based paint, a gravity type spray gun that is pushed by gravity and spontaneously falls down to the outlet is preferable. In particular, a so-called center cup type spray gun that supplies paint from a paint container fixed to a paint supply port at the top of the spray gun is preferable.

  FIG. 6 shows a conventional center cup type spray gun. As shown in the figure, the conventional center cup type spray gun has a fixed angle of the spray gun paint container 2 with respect to the spray gun 1, and although it can be applied front and downward, it is difficult to apply upward. is there. As shown in FIG. 6 (a), there is no problem if it is a front-facing coating or a downward-facing coating. However, as shown in FIG. 6 (b), if an upward coating is attempted, This is because the height of the paint liquid surface approaches the height of the ejection port 14a, and the paint becomes difficult to be pushed by gravity.

  In addition, when the liquid level of the paint falls below the outlet, air is sucked in together with the paint, causing a phenomenon of breathing and hindering painting. Such a phenomenon is particularly likely to occur when the paint in the paint container is reduced and the liquid level of the paint is lowered. That is, upward coating cannot be performed with a small amount of paint.

JP-A-8-215615

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a paint container for a spray gun that can appropriately spray paint without depending on the posture of the spray gun, and a spray gun to which the paint gun is connected. is there.

In order to solve the above problems, a paint container for a spray gun according to the present invention is:
A spray gun paint container for supplying paint from a paint supply pipe protruding above the spray gun to a spray gun for spraying paint from a nozzle outlet at the tip of the nozzle part,
A paint container for containing paint;
A paint discharge pipe which is provided at the bottom of the paint container and discharges the paint;
A connection mechanism for connecting a paint discharge pipe coaxially and rotatably to the paint supply pipe,
A center axis of the paint container is inclined with respect to an axis of the paint discharge pipe.

  The effects of the spray gun paint container having such a configuration will be described. In the spray gun paint container of the present invention, since the central axis of the paint container is inclined with respect to the axis of the paint discharge pipe, the paint discharge pipe is coaxially and rotatably connected to the paint supply pipe of the spray gun. The central axis of the paint container is inclined with respect to the axis of the paint supply pipe of the spray gun. As a result, even when the spray gun is faced upward when painting upward, the paint container can be rotated about the axis of the paint supply pipe, and the central axis of the paint container can be inclined forward of the spray gun. it can. That is, the center axis of the paint container can be brought close to the vertical direction with the spray gun facing upward, so that gravity can be appropriately applied to the paint in the paint container. As a result, even when the spray gun is in an upward posture, the paint can be appropriately sprayed.

  In the paint container for a spray gun according to the present invention, the tip of the paint discharge pipe is inserted into the paint supply pipe, and a flange protruding from the outer periphery of the paint discharge pipe, and an upper end of the paint supply pipe It is preferable that the paint discharge pipe is liquid-tightly and rotatably connected to the paint supply pipe by a sandwiched seal member. Accordingly, the connection portion between the paint discharge pipe and the paint supply pipe can be reliably sealed, and the paint does not leak even if the paint discharge pipe is rotated with respect to the paint supply pipe.

  In the spray gun paint container according to the present invention, the connection mechanism includes an annular engagement portion that is formed at one end with an internal screw that engages with an external screw formed on an outer periphery of the paint supply pipe, and engages with the flange portion. Is preferably a nut formed on the inner periphery of the other end. According to this nut, it becomes easy to connect the paint discharge pipe to the paint supply pipe so as to be rotatable coaxially and to remove it.

  In order to solve the above problems, a spray gun according to the present invention is a spray gun to which a spray gun paint container having the above-described characteristic configuration is connected, and one end portion of the spray gun is rotatably connected to a side surface of the nozzle portion. The other end is provided with a stand for supporting the spray gun together with the lower part of the grip part of the spray gun. The effects of the spray gun paint container provided in the spray gun are as described above, and the spray gun of the present invention can appropriately spray paint regardless of the posture of the spray gun. Further, by providing the stand, the spray gun can be easily and stably made to stand when pouring paint into the paint container, adding it, or interrupting the painting work.

  In the spray gun of the present invention, the stand rotates around the one end, the other end is positioned below the nozzle outlet, a support posture for supporting the spray gun, and the other end It is preferable that the posture can be changed to a retracted posture located above the ejection opening of the nozzle portion. According to this configuration, the stand can support the spray gun by adopting the support posture, while it does not interfere with the painting operation by adopting the retracted posture during the painting operation.

Side view of spray gun and spray gun paint container of the present invention Partial sectional view of spray gun and spray gun paint container Front view of stand Side view showing stand usage and non-use status Side view for explaining the effect of the present invention Side view of conventional spray gun and spray gun paint container

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an example of a spray gun 1 and a spray gun paint container 2 connected to the spray gun 1 (hereinafter simply referred to as a paint container 2). FIG. 2 is a partial cross-sectional view of the spray gun 1 and the paint container 2.

  The spray gun 1 has a pistol shape as a whole. An air nipple 11 is provided below the grip portion of the main body 10 and the amount of air introduced by the air amount adjusting device 12 can be adjusted. By pulling the trigger 13, the internal air valve can be opened and the paint can be sprayed from the outlet 14 a at the tip of the nozzle portion 14. The paint spraying amount adjusting device 15 can adjust the paint spraying amount by adjusting the movement of the needle valve in the nozzle portion 14. The pattern opening adjusting device 16 is a device for adjusting the coating width of the paint. An air cap 17 is provided at the tip of the nozzle portion 14 and is screwed by a tightening ring 18.

  As shown in the partial cross-sectional view of FIG. 2, the nozzle portion 14 has a paint nozzle 14 b built therein. The coating material nozzle 14b has a tubular shape as a whole, and has a tip that tapers to form an ejection port 14a. When the air cap 17 is fastened by the tightening ring 18, a ring-shaped slit 14c is formed between the inner peripheral surface of the air cap 17 and the periphery of the tip of the paint nozzle 14b. Compressed air is sprayed from the ring-shaped slit 14c. Therefore, immediately after the paint is sprayed from the tip of the paint nozzle 14b, the paint and the compressed air are sprayed in a mixed state. This is a so-called external mixing type spray gun, but the present invention can also be applied to an internal mixing type spray gun.

  A paint supply pipe 19 projects from the top of the spray gun 1. The paint container 2 is connected to the paint supply pipe 19, and the paint is supplied from the paint container 2. The paint supplied to the paint supply pipe 19 is sent to the paint nozzle 14b and sprayed from the ejection port 14a.

  An external screw 19 a is formed on the outer periphery of the upper end of the paint supply pipe 19. Further, a step portion 19 b into which the seal member 24 can be fitted is formed at the upper end of the paint supply pipe 19. The seal member 24 is formed of polytetrafluoroethylene (PTFE) having excellent chemical resistance. Further, polytetrafluoroethylene has a property that the coefficient of friction is small.

  The paint container 2 includes a paint container 20 that contains paint, and a paint discharge pipe 21 that is provided at the bottom of the paint container 20 and discharges the paint. The paint container 20 has an external shape in which the upper part is cylindrical and the lower part is conical. The interior of the paint container 20 is hollow, and the paint sprayed by the spray gun 1 is stored. Moreover, the upper end of the coating material accommodating part 20 is opened, and the lid | cover 22 can be attached or detached. The paint container 2 of the present embodiment is a so-called gravity cup, and the paint can move from the bottom of the paint container 20 to the paint discharge pipe 21 by its own weight in the use state as shown in FIG.

  The paint container 20 and the paint discharge pipe 21 are configured such that the central axis 200 of the paint container 20 is inclined with respect to the axis 210 of the paint discharge pipe 21. The inclination angle is set as appropriate.

  On the outer periphery of the paint discharge pipe 21, an annular flange 21a is projected. The tip 21 b of the paint discharge pipe 21 can be inserted into the paint supply pipe 19. The inner diameter of the paint discharge pipe 21 and the inner diameter of the paint supply pipe 19 are the same.

  The paint discharge pipe 21 and the paint supply pipe 19 are connected by a nut 23. The nut 23 has an inner screw 23 a that is engaged with an outer screw 19 a formed on the outer periphery of the paint supply pipe 19 at one end, and an annular engagement portion 23 b that engages with the flange portion 21 a of the paint discharge pipe 21. It is formed in the inner periphery. By tightening the nut 23 into the paint supply pipe 19, the collar portion 21 a can be pressed in the direction of the paint supply pipe 19 by the annular engagement portion 23 b, and the paint discharge pipe 21 can be connected to the paint supply pipe 19. Further, the seal member 24 is sandwiched between the flange portion 21a and the upper end portion of the coating material supply pipe 19, but the seal member 24 is formed of polytetrafluoroethylene having a small friction coefficient as described above, and the flange portion 21 a can slide on the seal member 24. Thereby, even after the paint discharge pipe 21 is connected and fixed to the paint supply pipe 19 by the nut 23, the paint discharge pipe 21 can freely rotate coaxially with the paint supply pipe 19 by applying a little force. The paint discharge pipe 21 is connected to the paint supply pipe 19 in a liquid-tight and rotatable manner.

  The spray gun 1 of this embodiment includes a stand 3. FIG. 3 is a front view of the stand 3. FIG. 4 is a side view showing a use state and a non-use state of the stand 3. The stand 3 is formed in a substantially trapezoidal shape as shown in the figure by bending a linear metal member. One end 3a of the stand 3 is both ends of a linear metal member, and extends so as to face each other. The other end 3b is slightly curved inward, and both sides thereof are convex. Thereby, as shown to Fig.4 (a), the two other end parts 3b can support a spray gun at three points with the grip part lower part of the spray gun 1. FIG.

  The two one end portions 3a are respectively inserted into holes provided on both side surfaces of the nozzle portion 14, and the stand 3 is rotatable around the one end portion 3a. As a result, the stand 3 has the other end 3b positioned below the ejection port 14a of the nozzle 14 and the support posture as shown in FIG. The posture can be changed to a retracted posture as shown in FIG. 4B located above the ejection port 14a of the nozzle portion 14.

  According to the present invention, since the central axis 200 of the paint container 20 is inclined with respect to the axis 210 of the paint discharge pipe 21, the paint discharge pipe 21 can be rotated coaxially with the paint supply pipe 19 of the spray gun 1. When connected, the central axis 200 of the paint container 20 is inclined with respect to the axis of the paint supply pipe 19 of the spray gun 1. FIG. 5 shows a side view for explaining the effects of the paint container 2 and the spray gun 1 of the present invention. As shown in FIG. 5A, in the case of normal front-side coating (or downward coating), weight is added to the paint in the paint container 20. Further, as shown in FIG. 5B, even when the spray gun 1 is faced upward when performing the upward coating, the paint container 20 is rotated about the axis 210 of the paint supply pipe 19, and the paint container The 20 central axes 200 can be inclined forward of the spray gun 1 (in front of the axis 210 of the paint supply pipe 19). Thereby, the central axis 200 of the paint container 20 can be brought close to the vertical direction while the spray gun 1 is faced upward, and gravity can be appropriately applied to the paint in the paint container 20. As a result, even when the spray gun 1 is in an upward posture, it is possible to appropriately spray the paint.

1 Spray gun 2 Spray gun paint container (paint container)
DESCRIPTION OF SYMBOLS 3 Stand 3a One end part 3b Other end part 10 Main body part 14 Nozzle part 14a Outlet 14b Paint nozzle 19 Paint supply pipe 19a External screw 19b Step part 20 Paint accommodating part 21 Paint discharge pipe 21a Gutter part 21b Tip 22 Lid 23 Nut 23a Inside Screw 23b Annular engagement portion 24 Seal member 200 Central axis 210 Axis

Claims (5)

A spray gun paint container for supplying paint from a paint supply pipe protruding above the spray gun to a spray gun for spraying paint from a nozzle outlet at the tip of the nozzle part,
A paint container for containing paint;
A paint discharge pipe which is provided at the bottom of the paint container and discharges the paint;
A connection mechanism for connecting a paint discharge pipe coaxially and rotatably to the paint supply pipe,
A spray gun paint container, wherein a central axis of the paint container is inclined with respect to an axis of the paint discharge pipe. The tip of the paint discharge pipe is inserted into the paint supply pipe,
The paint discharge pipe is liquid-tight and rotatable with respect to the paint supply pipe by a seal member sandwiched between a flange projecting on the outer periphery of the paint discharge pipe and the upper end of the paint supply pipe The paint container for a spray gun according to claim 1, wherein the paint container is connected.   In the connection mechanism, an inner screw that is screwed to an outer screw formed on the outer periphery of the paint supply pipe is formed at one end, and an annular engagement portion that engages with the flange portion is formed on the inner periphery of the other end. 3. The spray gun paint container according to claim 2, wherein the paint gun is a nut. A spray gun to which the spray gun paint container according to any one of claims 1 to 3 is connected,
A spray gun comprising a stand, one end of which is rotatably connected to a side surface of the nozzle portion, and the other end of which supports the spray gun together with a lower part of a grip portion of the spray gun. The stand rotates around the one end, the other end is positioned below the nozzle outlet, a support posture for supporting the spray gun, and the other end from the nozzle outlet. 5. The spray gun according to claim 4, wherein the posture can be changed to a retracted posture positioned above.

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