JP2006312144A - Coating material container attachment tool for spray gun and coating material container for spray gun - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating material container for a spray gun which is made attachable to a spray gun with high sealability in one-touch manner and is capable of making the washing work of the coating material container easy and lessening the labor for transferring a coating material from a color adjustment cup to the coating material container, thereby improving the work efficiency. <P>SOLUTION: The container attachment tool 1 comprises a cover body 3 fitted so as to cover the upper end aperture part of a disposable coating material container 2 and internally having a coating material flow channel, a joining member 4 for joining the cover body to a nipple of the spray gun, and a ring-like pinching member 5 for pinching a flange 21 in the circumferential rim of the upper end aperture part of the container in combination with the cover. The cover and the pinching member are joined by interlocking a groove 35 formed in the circumferential face of the cover with a pin 51 projected in the circumferential face of the pinching member. The groove is composed of a vertical groove with an opened lower end part and a circumferential groove continued from the upper end part of the vertical groove and extended circumferentially and the circumferential groove is sloped upward to the terminal end part and when the pin is moved along the upward slope, the flange is compacted between the cover and the pinching member. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a container attachment for attaching a disposable paint container such as a paper cup to a spray gun, and a paint container for a spray gun provided with this attachment.

Spray guns for painting used in automobile body repairs, etc., can be roughly classified into gravity type and suction type, and all have an aluminum paint container.
Currently, most paints used for car body repair are two-component paints that make the coating effect effective by adding a curing agent separately. There is a need.
In addition, the primer surfacer applied to the vehicle body for surface preparation and rust prevention before painting has been one-component in the past, but recently two-component ones are increasing, and after use it is sprayed. The gun paint container needs to be cleaned quickly.
Furthermore, as a recent trend, the use of coating a small area with a small amount of paint is increasing, and the number of times the paint container is washed is increased in order to frequently change the paint.

  In this way, in the painting work using the conventional spray gun, the paint container must be washed, but since the washing of the paint container is a troublesome and time-consuming work, the efficiency of the painting work is greatly increased. It was decreasing.

In addition, the supply of paint to the paint container of the spray gun is usually carried out by first putting several kinds of paint into a toning cup and stirring to adjust the color, and then spraying the toned paint with a strainer. However, this work was also very troublesome and reduced the efficiency of the painting work.
Furthermore, since the paint inside was not visible when the container was attached to the spray gun, the remaining amount and state of the paint could not be confirmed, and workability was poor.

As a technique proposed in view of the above-described problems related to container cleaning, for example, there is a technique disclosed in Patent Document 1 below.
The disclosed technique of Patent Document 1 is that a lid is connected to a spray gun, a liquid is stored in a paper cup that can be disposed of, then attached to the lid, and the container is placed in a predetermined gap between the lid and the joining member. The joining member is joined to the lid so as to sandwich the peripheral edge of the opening.

  According to this disclosed technique, instead of a normal aluminum container, a disposable paper cup can be attached to a spray gun and used, so that it is possible to eliminate troublesome cleaning work of a paint container. Efficiency can be improved.

However, since the disclosed technique of Patent Document 1 employs a structure in which the lid and the joining member are joined by screwing, the joining work is cumbersome and time-consuming, which hinders improvement in work efficiency.
In addition, if the tightening by screwing is insufficient, the paint may leak from the gap between the container, the lid, and the joining member during use.
In addition, there is a drawback that it can be applied only to a suction type spray gun.
In addition, since it is not possible to save time and labor for transferring from the toning cup to the paint container as described above, the work efficiency has not been greatly improved.
Furthermore, even when a paper cup is used, the problem that the remaining amount and state of the paint cannot be confirmed with the container attached to the spray gun described above cannot be solved.

Japanese Patent Application Laid-Open No. 6-335643

  The present invention has been made to solve the above-described problems of the prior art, and can be used with a disposable container attached to a spray gun. This makes it possible to save time and effort for transfer from the paint container to the paint container, which can greatly improve the efficiency of painting work, and it is possible to attach a disposable container with high sealing performance with one touch. For spray guns that can be easily and reliably prevented, can be applied to both gravity and suction type spray guns, and can check the remaining amount of paint during use. A paint container mounting tool and a paint container for a spray gun equipped with this mounting tool are provided.

The invention according to claim 1 is a container fixture for attaching a disposable paint container to a spray gun, and is fitted so as to cover the upper end opening of the container and has a paint flow passage inside. A lid provided on the peripheral edge of the upper end opening of the container between the lid body, a connecting member that connects the lid body to the nipple of the spray gun and connects the flow passage to the inside of the spray gun, and the lid body The lid body and the clamping member are connected by meshing with a groove provided on the circumferential surface of the lid body and a pin protruding from the circumferential surface of the clamping member, Formed by a vertical groove having a lower end opened and a circumferential groove extending in the circumferential direction continuously with the upper end of the vertical groove, the circumferential groove formed in an upward slope toward the end portion, When the pin moves along the upward slope The flange is about spray gun paint container fitting, characterized in that it is compressed between the lid and the clamping member.
The invention according to claim 2 is provided with a pipe that is attached to the lower surface of the lid and communicates with the flow passage, and the pipe is detachable from the lid. 1. A spray gun paint container fixture according to 1.
A third aspect of the present invention relates to the spray gun paint container fitting according to the first or second aspect, wherein the flow passage is formed in an inverted L shape.

According to a fourth aspect of the present invention, a filter is interposed between the lower surface of the lid and the upper end portion of the pipe, and a filter holding member that presses the lower surface of the filter is integrally provided at the upper end portion of the pipe. 4. The spray gun paint container mounting device according to claim 2, wherein the filter pressing member is detachable from the lid.
According to a fifth aspect of the present invention, the filter comprises a sheet-like filter having an area larger than the inner cross-sectional area of the pipe, between the upper surface of the filter and the lower surface of the lid, and the lower surface of the filter and the filter retainer. 5. The spray gun paint container fitting according to claim 4, wherein a gap is formed between the upper surfaces of the members.

A sixth aspect of the present invention relates to the spray gun paint container fitting according to the fifth aspect, further comprising a ring-shaped filter pressing member that covers only the peripheral edge of the filter.
In the invention according to claim 7, a filter having an area larger than the inner cross-sectional area of the pipe is integrally attached to a lower end portion of the pipe, and between the filter and the pipe and between the filter and the bottom surface of the container. 4. A spray gun paint container fitting according to claim 2, wherein a gap is formed between each of the two.

The invention according to claim 8 is provided with a filter having a peripheral edge sandwiched between the lid and the clamping member, and a gap is formed between the filter and the lower surface of the lid. 2. The spray gun paint container fitting according to claim 1, wherein
The invention according to claim 9 is a spray gun paint container in which a disposable paint container is attached to the fixture according to any one of claims 1 to 8, wherein the paint container has a circumferential side height. The present invention relates to a paint gun for a spray gun, characterized in that it is composed of a paper cup having an opening extending in the direction and a transparent resin sheet adhered to the opening.

According to the invention of claim 1, since it is possible to use a disposable container attached to a spray gun, it is possible to save the trouble of washing the paint container and greatly improve the painting work efficiency. It becomes possible. In addition, since the disposable container can be attached with a single touch and high sealing performance, it is possible to easily and reliably prevent paint leakage during use.
According to the second aspect of the present invention, since it has a pipe that can be attached to and detached from the lid, it can be applied to either a gravitation type or a suction type spray gun. A paint container fixture is obtained.
According to the invention which concerns on Claim 3, a cover body can be easily connected with respect to the nipple provided in the spray gun side.

According to the invention which concerns on Claim 4, since the filter is interposed between the lower surface of a cover body and the upper end part of a pipe, it can save the effort for the transfer from a toning cup to a paint container. This makes it possible to greatly improve the painting work efficiency.
According to the fifth aspect of the present invention, it is possible to obtain a spray gun paint container attachment that can quickly remove paint from the spray gun at the start of use and that is less likely to cause clogging of the filter.

According to the invention which concerns on Claim 6, it becomes possible to change and use the suction type spray gun provided with the filter to the gravity type spray gun provided with the filter.
According to the seventh aspect of the invention, it is possible to obtain a suction type spray gun including a filter that can quickly remove paint from the spray gun at the start of use and is less likely to cause clogging of the filter.

According to the eighth aspect of the present invention, it is possible to obtain a gravitational spray gun including a filter that can quickly remove paint from the spray gun at the start of use and that is less likely to cause clogging of the filter.
According to the invention which concerns on Claim 9, the paint container for spray guns which can grasp | ascertain the residual amount and state of a coating material in the state attached to the spray gun, and has a high working efficiency is obtained.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of a spray gun paint container fitting and a spray gun paint container according to the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing a spray gun paint container according to the present invention.
The spray gun paint container according to the present invention is attached to supply paint to the spray gun, and a disposable paint container (2) is attached to the spray gun paint container fitting (1). It is attached.

The disposable paint container (hereinafter referred to as a disposable container) (2) in the present invention is made of a material other than metal. Specifically, paper cups that are cheap, lightweight, solvent resistant, and easy to dispose of are most preferably used. Resin cups can also be used.
Synthetic resin cups can be manufactured by known molding methods such as injection molding, blow molding, and vacuum molding. However, if blow molding and vacuum molding are used, they can be manufactured at a low cost equivalent to paper cups. Become.

The disposable container (2) used in the present invention has a ridge (21) formed on the periphery of the upper end opening.
When a paper cup is used as the disposable container (2), a curl portion formed at the periphery of the upper end opening portion as seen in a commercially available paper cup as shown in FIG. 2 corresponds to the ridge (21).
Even when a synthetic resin cup is used as the disposable container (2), it is preferable to provide a similar curled portion as the ridge (21). However, when it is difficult to form a curled ridge, FIG. You may form the collar (21) of a shape as shown to (a)-(c).

When a synthetic resin cup is used as the disposable container (2), a transparent or translucent material can be used, and the remaining amount and state of the paint in the container can be confirmed from the outside, improving workability. An effect is obtained.
When a paper cup is used, such an effect is not usually obtained. However, as shown in FIG. 4, an opening (22) extending in the height direction is formed on a part of the peripheral side surface of the paper cup, By adopting a configuration in which a transparent synthetic resin sheet (23) is adhered to the opening (22), the same effect can be obtained.

The spray gun paint container attachment (1) is an attachment for attaching the disposable container (2) to the spray gun.
The fixture (1) includes a lid (3) fitted so as to cover the upper end opening of the disposable container (2), and a connecting member (4) for coupling the lid (3) to the nipple of the spray gun. And a clamping member (5) for clamping the bag (21) of the disposable container (2) between the lid (3) and the lower surface of the lid (3) and inserted into the disposable container (2) The pipe (6) to be provided is provided.
In the present specification, the expressions “upper”, “lower”, “vertical”, and “horizontal” with respect to the fixture (1) indicate that the disposable container (2) is in an upright state (the opening is upper as shown in FIG. 1). Is the standard).

As shown in the figure, the lid (3) has a circular surface (32) covering the upper end opening of the disposable container (2), and a cylindrical portion (33) formed to project downward along the outer edge. ing.
The cylindrical portion (33) is attached so as to cover the upper portion of the outer peripheral surface of the disposable container (2) from the outside, and the disposable container (2) is provided at the boundary between the circular surface (32) and the cylindrical portion (33). An annular groove (34) into which the collar (21) of () is inserted is formed.

The lid (3) has a paint flow passage (31) therein.
The flow path (31) is opened at the lower surface of the lid (3), extends vertically upward with this opening as an inlet, then bends at a right angle and extends in the horizontal direction, and has an inverted L having an outlet opened at the end thereof. It is a letter-shaped passage.
As will be described later, the upper end of the pipe (6) is connected to the inlet of the flow passage (31) via a filter (7), and the outlet is for connecting the lid (3) to the nipple of the spray gun. The connecting member (4) is connected.

The connecting member (4) has a known structure that can be connected to a nipple (11) (see FIG. 5) provided on the side of the nozzle of the spray gun, and has a base end of the lid (3). A first member (41) screwed into the outlet of the flow passage (31) and having a truncated cone-shaped enlarged portion at the tip, and the enlarged portion accommodated in the first member (42). And a second member (43) having a cap nut shape attached to the head.
By connecting the lid (3) to the nipple (11) using the connecting member (4), the flow passage (31) of the lid (3) can be communicated with the paint flow passage inside the spray gun. it can.

  The sandwiching member (5) is disposed inside the cylindrical portion (33) of the lid (3) and is disposed between the annular groove (34) and the bottom surface (upper surface) of the lid (3). It is a ring-shaped member which clamps the collar (21).

The lid (3) and the clamping member (5) are formed by a groove (35) provided on the peripheral surface of the lid (3) and a pin (51) protruding from the peripheral surface of the clamping member (5). Connected by meshing.
6A and 6B are diagrams for explaining this connection method, in which FIG. 6A is a front view, and FIG. 6B is a cross-sectional view taken along line A in FIG. In these figures, the upper part of the lid (3) is omitted.

  The groove (35) provided on the peripheral surface of the lid (3) extends in the circumferential direction continuously with the vertical groove (35a) having the lower end opened and the upper end of the vertical groove (35a). The circumferential groove (35b) is formed to be inclined so as to have an upward slope toward the groove end portion.

The groove (35) is formed at a plurality of locations along the circle formed by the cylindrical portion (33) of the lid (3), and the pin (51) is along the circle formed by the clamping member (5). In addition, they are formed at positions corresponding to the grooves (35) at a plurality of locations.
In the example of illustration, the groove | channel (35) and the pin (51) are formed in two places which oppose on both sides of the center of a circle | round | yen.

The lid (3) and the pinching member (5) are connected by first inserting the flange (21) into the annular groove (34) of the lid (3) and then projecting the pin protruding from the pinching member (5). (51) is inserted into the vertical groove (35a) from the lower end of the groove (35) formed in the lid (3), and then the lid (3) and the clamping member (5) are rotated in opposite directions. The pin (51) is raised along the upward slope of the circumferential groove (35b) (see FIG. 6 (a)).
This connection method can be performed easily and reliably in a very short time compared to the connection method using screws.

In the above connecting operation, when the pin (51) is inserted into the vertical groove (35a), the flange (21) has a bottom surface of the annular groove (34) of the lid (3) and an upper surface of the clamping member (5). It is in a state of being sandwiched between.
Subsequently, when the lid (3) and the pinching member (5) are rotated in the opposite directions and the pin (51) is raised along the upward slope of the circumferential groove (35b), the collar (21) 3) is compressed and crushed between the clamping member (5).
In this way, when the ridge (21) is compressed and crushed between the lid (3) and the clamping member (5), the ridge (21) serves as a packing and ensures that the paint leaks during use. Can be prevented.

The pipe (6) is attached to the lower surface of the lid (3) so as to communicate with the flow passage (31), and a filter is provided between the lower surface of the lid (3) and the upper end of the pipe (6). (7) is installed.
At the upper end of the pipe (6), a disk-shaped filter pressing member (8) for pressing the lower surface of the filter (7) is integrally provided, and this filter pressing member (8) is attached to the lid (3). On the other hand, it is detachably attached. The attachment method may be a method by screwing of an inner screw and an outer screw, or may be by engagement of a groove and a pin as shown in FIG.

The filter (7) is a known material used for filtration of paint, for example, a sheet (thin plate) formed from Yoshino paper or filter cloth, and has a thickness of about 0.1 to 0.2 mm, for example. Is used. In the drawing, the filter (7) is drawn thickly for ease of viewing.
The filter (7) has a larger area than the inner cross-sectional area of the pipe (6). Specifically, for example, the inner cross-sectional area of the pipe (6) is about 2 to 30 times, preferably about 10 to 20 times.
The filter (7) is fixed by the peripheral edge being sandwiched between the filter pressing member (8) and the lid (3), and the upper surface of the filter (7) and the lower surface of the lid (3) are fixed. A gap (9) is formed between the gap and the lower surface of the filter (7) and the upper surface of the filter pressing member (8). These gaps (9) are a thin space having a height of about 5 to 10 times the thickness of the filter (7), for example, a height of about 1 mm.

In the case of the suction type spray gun, if there is a large space between the suction pipe and the paint nipple, a phenomenon occurs in which the paint does not come out of the spray gun until the air existing in the space is replaced with the paint.
In order to solve this, the area of the filter may be the same as the inner cross-sectional area of the suction pipe, but this causes a problem that the filter is immediately clogged.
That is, these two problems are contradictory.

  In the present invention, the sheet-like thin filter (7) is used, and the filter (7) has a large area and is formed with thin spaces above and below, thereby reducing the space formed in the filter portion, and at the same time As a result, it is possible to solve the above two conflicting problems at the same time.

The form shown in FIG. 1 is a form when attached to a suction type spray gun, and when attached to a gravity type spray gun, the form shown in FIG. 7 is used.
In the form shown in FIG. 7, the pipe (6) is removed from the spray gun paint container of the form of FIG. 1 and turned upside down, and the method for attaching the disposable container (2) to the lid (3), the lid The method for attaching the body (3) to the spray gun is the same as the embodiment shown in FIG.

In the form shown in FIG. 1, the pipe (6) is provided integrally with the disc-shaped filter pressing member (8), and the filter pressing member (8) is removed together with the pipe (6).
In the form of FIG. 7, a ring-shaped filter pressing member (10) that covers only the peripheral edge of the filter (7) is attached to the lid (3) instead of the removed disk-shaped filter pressing member (8). This fixes the filter (7).
In this case, since an opening having substantially the same area as the filter (7) is formed inside the ring-shaped filter pressing member (10), paint can be taken from substantially the entire surface of the filter (7).

FIG. 8 is a sectional view showing a second embodiment of the paint container for a spray gun according to the present invention.
The second embodiment is applied to a suction-type spray gun. The spray gun paint container according to this embodiment is different from the embodiment shown in FIG. 1 (referred to as the first embodiment). The same reference numerals are given to the same components, and the description is omitted.
In the first embodiment, the filter (7) is attached to the upper end of the pipe (6). In the second embodiment, the filter (7) is attached to the lower end of the pipe (6). The inlet of 31) communicates directly with no filter (7).

The filter (7) has a sheet shape similar to that of the first embodiment, and has an area larger than the inner cross-sectional area of the pipe (6).
A gap (9) is formed between the filter (7) and the pipe (6) and between the filter (7) and the inner bottom surface of the disposable container (2). These gaps (9) are thin spaces having a height of about 5 to 10 times the thickness of the filter (7), for example, a height of about 1 mm.
As a result, the same effect as that of the first embodiment, that is, the effect that the paint can be quickly taken out from the spray gun at the start of use and the filter is not easily clogged is obtained.

Fig.9 (a) is sectional drawing which shows 3rd embodiment of the coating material container for spray guns based on this invention, FIG.9 (b) is sectional drawing of the filter used with this form. In addition, the upper part (flow channel upper part and connecting member) of the lid (3) is omitted in FIG.
The third embodiment is applied to a gravity type spray gun.
Hereinafter, the spray gun paint container according to the third embodiment will be described with respect to differences from the embodiment of FIG. 7 in which the first embodiment is applied to a gravity spray gun. Omitted.
In the first embodiment, the filter (7) is fixed to the lid body by the ring-shaped filter pressing member (10). However, in the third embodiment, the filter (7) is formed of the lid body (3) and the clamping member ( 5) and the periphery is fixed by being sandwiched.

  As shown in FIG. 9B, the filter (7) used in the third embodiment has a cylindrical portion (71) that falls vertically from the filter surface along the periphery of the filter surface (filtration surface). It has a collar part (72) extended in parallel with the filter surface from the lower end of the cylindrical part to the outside, and this collar part (72) is a lid (3) and a clamping member (5). It is pinched and fixed between.

The area of the filter surface (filtration surface) of the filter (7) has substantially the same area as the upper end opening of the disposable container (2), and is sufficiently larger than the cross-sectional area of the flow passage (31). Yes.
Further, a gap (9) is formed between the filter (7) and the lower surface (32) of the lid, and this gap (9) is about 5 to 10 times the thickness of the filter (7). For example, it is a thin space having a height of about 1 mm.
With these configurations, it is possible to take in paint from substantially the entire surface of the filter (7), as in the above example, and the filter is less likely to be clogged. The effect that it can be produced is obtained.

  The present invention can be used to attach a disposable paint container such as a paper cup to a spray gun used in automobile body repair or the like.

It is sectional drawing which shows the paint container for spray guns (when attaching to a suction type spray gun) which concerns on this invention. It is a figure which shows the paper cup used as a disposable container attached to a spray gun in this invention. It is an example of the shape of a bag in the case of using a synthetic resin cup as a disposable container. It is a figure which shows the example of a change of the paper cup used as a disposable container attached to a spray gun in this invention. It is a figure of the spray gun to which the paint container for spray guns concerning the present invention is attached. It is a figure explaining the connection method of a cover body and a clamping member. It is sectional drawing which shows the paint container for spray guns (when attaching to a gravity type spray gun) which concerns on this invention. It is sectional drawing which shows 2nd embodiment of the coating material container for spray guns concerning this invention. (A) is sectional drawing which shows 3rd embodiment of the coating container for spray guns concerning this invention, (b) is sectional drawing of the filter used with this form.

Explanation of symbols

1 Paint gun fitting for spray gun 2 Disposable paint container 21 鍔 3 Lid 31 Flow path 32 Lower surface of the lid (circular surface)
35 groove 35a vertical groove 35b horizontal groove 4 connecting member 5 clamping member 51 pin 6 pipe 7 filter 8 filter holding member 9 clearance 10 ring-shaped filter holding member

Claims (9)

  A container attachment for attaching a disposable paint container to a spray gun, the cover being fitted so as to cover the upper end opening of the container and having a paint flow passage inside, and the cover A ring-shaped holding member that holds a hook provided at the periphery of the upper end opening of the container between the connecting member that connects the flow passage to the inside of the spray gun by connecting a nipple of the spray gun to the inside of the spray gun The lid body and the clamping member are connected by meshing with a groove provided on the circumferential surface of the lid body and a pin protruding from the circumferential surface of the clamping member. A circumferential groove extending in the circumferential direction continuously with the upper end of the vertical groove, the circumferential groove is formed with an upward slope toward the terminal end, and the pin is along the upward slope When the lid moves, the lid and the clamping part Paint container fixtures spray gun, characterized in that it is compressed between the.   The paint container for a spray gun according to claim 1, further comprising a pipe attached to the lower surface of the lid body and communicating with the flow passage, the pipe being detachable from the lid body. Mounting tool.   3. The spray gun paint container fitting according to claim 1, wherein the flow passage is formed in an inverted L shape.   A filter is interposed between the lower surface of the lid and the upper end portion of the pipe, and a filter pressing member for pressing the lower surface of the filter is integrally provided at the upper end portion of the pipe. The spray container paint container fitting according to claim 2 or 3, wherein the cover is attachable to and detachable from the lid.   The filter comprises a sheet-like filter having an area larger than the inner cross-sectional area of the pipe, between the upper surface of the filter and the lower surface of the lid, and between the lower surface of the filter and the upper surface of the filter pressing member, 5. A spray gun paint container fitting according to claim 4, wherein a gap is formed in each.   6. The spray gun paint container fitting according to claim 5, further comprising a ring-shaped filter pressing member that covers only a peripheral edge of the filter.   A filter having an area larger than the inner cross-sectional area of the pipe is integrally attached to a lower end portion of the pipe, and a gap is provided between the filter and the pipe and between the filter and the bottom surface of the container. The paint container mounting tool for a spray gun according to claim 2 or 3, wherein the paint container mounting tool is formed.   2. The filter according to claim 1, further comprising a filter having a peripheral edge sandwiched between the lid and the sandwiching member, wherein a gap is formed between the filter and the lower surface of the lid. Paint gun mounting tool for spray gun. A spray gun paint container comprising a disposable paint container attached to the fixture according to claim 1, wherein the paint container has an opening extending in a height direction on a peripheral side surface. A spray gun paint container comprising a paper cup and a transparent resin sheet adhered to the opening.

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