JPH0515820A - Fine granule applying method and fine granule applying device - Google Patents

Abstract

PURPOSE:To obtain the fine granule applying method and device which selectively apply fine granules only to the end face of a work at all times without requiring skill by introducing air into the spacing between the work and masking members and releasing the air from the circumference at the end of the work, thereby spraying the fine granules to the end face of the work. CONSTITUTION:The work W as the constituting member of a side molding is transported, positioned and inserted between two mask blocks 3 and 4. A stop valve 9 opens to introduce the air from an air supply source 13 into a spacing S through introducing holes 7 and 8. There are substantially no spacings between the mask blocks 3 and 4 on the counter end side of the work W and, therefore, the air in the spacing S generates a negative pressure at the end face Fa of the and is released from the circumference thereof to the outside. An adhesive adheres to the end face Fa of the work W and the side faces 3a, 4a of the mask blocks 3, 4 when the adhesive is sprayed from a spraying device 13 by opening a stop valve 12 in this state. The adhesive is uniformly applied only to the end face Fa of the work W without requiring skill.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fine particle coating method and a fine particle coating apparatus, and in particular, a paint or an adhesive or the like which is selectively made into fine particles only on an end face of a predetermined work (hereinafter, both are referred to as " The present invention relates to a fine particle applying method and a fine particle applying apparatus for applying "fine particles".

[0002]

2. Description of the Related Art As a conventional method for applying fine particles of this kind,
Those using the masking tape shown in FIG. 8 are widely used.

FIG. 8 is a perspective view showing a work to which the conventional method for applying fine particles using a masking tape is applied.

The procedure of this fine particle coating method will be described below.
First, the masking tape 101 is attached with one edge thereof aligned with the periphery of the end face Fa of the work W. Next, when fine particles are sprayed onto the end face Fa by a spray device (not shown) and the masking tape 101 is peeled off after the fine particles are dried, a coating film is formed only on the end face Fa.

As a method for applying this type of fine particles,
There is one disclosed in Japanese Patent Publication No. 62-41796.

On the other hand, as a method for applying fine particles other than the above-mentioned method, there can be mentioned a method for applying an adhesive to the constituent members of the automobile side molding shown in FIG.

FIG. 9 is a perspective view showing constituent members of a side molding to which this conventional fine particle coating method is applied.

As shown in the figure, polyvinyl chloride (PV
The work W as a constituent member of the side molding made of C) or the like is formed into a long shape by extrusion molding, and then cut into a predetermined length. Then, after the adhesive is applied to the end face Fa of the work W, the end forming material 14 made of polyvinyl chloride is injection-molded as shown by the phantom line, and when the entire surface is painted in black or the like, the side surface is formed. The mall is completed.

The above-mentioned work of applying the adhesive is carried out by a cotton swab 111, a brush, a waste cloth, etc. soaked in the adhesive, and the operator uses these tools to cover the entire end face Fa of the component W, and , The adhesive is applied so as not to eat out.

[0010]

In the conventional method for applying fine particles using the masking tape 101, one edge of the masking tape 101 is exactly aligned with the periphery of the end face Fa of the work W when the masking tape 101 is attached as described above. The work efficiency was not good because the tape 101 had to be peeled off after coating in addition to the above. Further, since the masking tape 101 is disposable, there is a possibility that the cost may increase in mass production.

On the other hand, regarding the method of applying the adhesive to the work W which is a constituent member of the side molding, the application is performed with the swab 1.
Since it is performed at 11 or the like, skill is required to apply only the end face Fa, peeling occurs in the end part molding material 14 when the application of the adhesive is insufficient, and corrosion occurs when the adhesive is eroded from the end face Fa. There was a possibility that the appearance would rise and the appearance would be poor.

Therefore, the present invention has good working efficiency, can reduce the manufacturing cost without requiring consumables such as masking tape, and can always selectively apply only the end face of the work without requiring skill. An object of the present invention is to provide a fine particle applying method and a fine particle applying apparatus that can be used.

[0013]

According to a first aspect of the present invention, there is provided a method for applying fine particles, comprising a first step of disposing a masking member in a state where a gap is formed on the outer periphery of an end portion of a work, and an air inside the gap. Second step of introducing the gas into the periphery of the end surface of the work and the third step of spraying fine particles onto the end surface of the work.
And the process of.

According to a second aspect of the present invention, there is provided a fine particle coating device, wherein a masking member is provided in a state where a gap is formed on the outer periphery of the end portion of the work, spraying means arranged to face the end surface of the work, and the gap. Air supply means for introducing air into the inside and discharging it from the periphery of the end surface of the work is provided.

[0015]

In the first invention, the masking member is arranged in the first step, and the air is introduced into the gap between the work and the masking member in the second step and is discharged from the periphery of the end face of the work. In the third step, the fine particles are sprayed onto the end surface of the work, and the air discharged from the periphery of the end surface of the work at this time prevents the fine particles from adhering to the outer periphery of the work or the corners around the end surface. In addition, since the masking tape is not used, the attaching and peeling operations can be omitted, and the masking tape purchase cost is not required.

In the second aspect of the invention, the air from the air supply means is introduced into the gap between the work and the masking member and is discharged from the periphery of the end surface of the work, and the spray means forms fine particles on the end surface of the constituent member. When sprayed, the air prevents the fine particles from adhering to the outer periphery of the work and the corners around the end face, and since no masking tape is used, the sticking and peeling work can be omitted. At the same time, there is no need to purchase masking tape.

[0017]

EXAMPLES Examples of the present invention will be described below.

[First Embodiment] FIG. 1 is a sectional view taken along line XX of FIG. 3 showing the entire structure of a fine particle coating apparatus according to the first embodiment of the present invention. FIG. 2 is a sectional view of the first embodiment of the present invention. FIG. 3 is a perspective view of the constituent members and the mask block, and FIG. 3 is a front view of the constituent members and the mask block according to the first embodiment of the present invention.

The fine particle coating device of this embodiment is for coating an adhesive on the end face Fa of the work W as a constituent member of the side molding. The work W of the side molding is made of polyvinyl chloride (PVC) or the like, formed into a long shape by extrusion molding, and then cut into a predetermined length, and the cut surface is an end surface Fa. A design surface 1 having irregularities continuous in the longitudinal direction is formed on the front surface of the work W, and a concave groove 2 that is also continuous in the longitudinal direction is formed on the back surface of the work W. Each work W is sequentially transported in the longitudinal direction by a transport device (not shown), and when it reaches the place where the fine particle coating device of this embodiment is installed, it is temporarily stopped and positioned. 1 and 2, the work W at the time of this positioning is shown.

The upper and lower mask blocks 3 and 4 as a masking member of the fine particle coating device can be vertically contacted with and separated from each other by a driving mechanism (not shown). When approaching, the end of the work W is pinched. It has become.
At this time, the end face Fa of the work W is covered with the mask blocks 3, 4
The dimension A is immersed from the side surfaces 3a and 4a of the. A recess 5 corresponding to the design surface 1 of the work W is formed on the lower surface of the upper mask block 3, and a ridge 6 corresponding to the recess groove 2 of the work W is formed on the upper surface of the lower mask block 4.

The concave portion 5 and the ridge 6 are provided with step portions 5a and 6a.
The cross-sectional shape is large on the end side of the work W with the boundary as
The cross-sectional shape is set small on the opposite side. And
The mask blocks 3 and 4 when the work W is sandwiched are
A gap S is formed between the outer periphery of the work W on the end side of the work W, and is substantially in contact with the outer periphery of the work W on the opposite side. In this embodiment, the distance between the end faces Fa of the mask blocks 3 and 4 and the step portions 5a and 6a, that is, the total length B of the gap S is set to 50 mm, and the thickness C of the gap S is 1 mm.
Is set to.

Air introducing holes 7 and 8 are formed in the upper and lower mask blocks 3 and 4, respectively.
One end of 8 is opened in the recess 5 and the ridge 6 and communicates with the gap S, and the other ends of both air introduction holes 7 and 8 are electromagnetic on-off valves 9
Through an air supply source 10 of the fine particle coating device. Further, the air supply source 10 is connected via a pressure reducing valve 11 and an electromagnetic on-off valve 12 to a spray device 13 as a spraying device, which is arranged to face the end face Fa of the work W. The adhesive is sprayed toward the end face Fa. In the present embodiment, the set pressure of the air supply source 10, that is, the air pressure introduced into the gap S is set to about 0.8 to 1.0 kg / cm ² , and the pressure after decompression by the pressure reducing valve 11 is set. That is, the air pressure supplied to the spray device 13 is set to about 0.5 kg / cm ² .

In this embodiment, the on-off valve 9 and the air supply source 1 are
0 constitutes an air supply means.

Next, the operation of the fine particle coating device of the present embodiment constructed as described above will be described. Before the start of work, the upper and lower mask blocks 3 and 4 are separated from each other, and the work W as a constituent member of the side molding is shown in FIGS.
In, the sheet is conveyed from the right side between both mask blocks 3 and 4 and positioned. Next, when both mask blocks 3 and 4 approach each other by the drive device to sandwich the work W and the opening / closing valve 9 is opened, air from the air supply source 13 is introduced into the gap S through the air introduction holes 7 and 8. To be done. Since a gap is hardly formed between the mask W and the mask blocks 3 and 4 on the side opposite to the end of the work W, the air in the gap S has a negative pressure on the end face Fa of the work W and is discharged to the outside from the periphery thereof. It

Then, in this state, the opening / closing valve 12 is opened and the adhesive is sprayed from the spray device 13. The adhesive is applied to the end face Fa of the work W and the side faces 3a of the mask blocks 3 and 4.
Adhere to 4a. As described above, since the air having a pressure higher than the injection pressure of the spraying device 13 is discharged from the space S, the adhesive enters the space S and adheres to the outer periphery of the work W, or the end face Fa. It is prevented from adhering to the surrounding corners. Therefore, the adhesive is applied all over the end face Fa of the work W without requiring the skill of the operator. Further, since the masking action is obtained by the air discharged from the space S in this manner, the tape attaching and peeling work can be omitted as in the case of using the conventional masking tape, and the masking tape No cost required.

The end face Fa of the work W is recessed from the side surfaces 3a and 4a of the mask blocks 3 and 4 because of the gap S.
In order to fully exert the action of the air discharged from the inside, the end surface Fa of the work W is temporarily masked by the mask blocks 3, 4
If it projects from the side surfaces 3a and 4a of the workpiece W,
Before the adhesive is prevented from adhering to the outer periphery and corners of the air, the air will diffuse to the outside. Therefore, it is desirable that the end surface Fa of the work W be slightly recessed from the side surfaces 3a and 4a of the mask block as in the present embodiment or be flush with the side surfaces 3a and 4a of the mask block.

The gap S has a function of making the air introduced from the air introduction holes 7 and 8 uniform.
If the overall length B of the is too short, the air will not be uniform, and the end face F
There is a possibility that unevenness in the amount of air released may occur around a and a sufficient effect of preventing adhesion of the adhesive may not be obtained. That is, the total length B of the gap S of the present embodiment, which is 50 mm, is set as an optimum value that can make the air uniform and can prevent the mask blocks 3 and 4 from increasing in size.

On the other hand, the on-off valves 9 and 12 are closed after a predetermined time, and the application of the adhesive is completed. Then, the upper and lower mask blocks 3 and 4 are moved to the work W by a driving device.
Away from. Then, a new work W is conveyed between the mask blocks 3 and 4, and the end face Fa thereof is similarly coated with the adhesive.

FIG. 4 is a perspective view showing the completed side molding of the first embodiment of the present invention.

As shown in the figure, the applied adhesive dries when the solvent (MEK) contained therein evaporates, and then,
An end molding material 14 made of polyvinyl chloride is injection-molded on the end surface Fa of the work W. The adhesive is once melted by the heat of this injection molding, and firmly bonds the work W and the end molding material 14. Then, the end forming material 14 is formed on both ends of the work W, respectively, and then the whole is applied in black or the like to complete the side molding. As described above, the adhesive is applied all over the end face Fa to prevent it from adhering to the outer periphery of the work W or the corners around the end face Fa. There is no risk of food being eaten out.

Although the adhesive is gradually adhered to the side surfaces 3a and 4a of the mask blocks 3 and 4 by repeating the coating operation, if the mask blocks 3 and 4 are washed in an appropriate cycle, they will be continuously disposed without being discarded. Can be used.

As described above, in the above embodiment, the gap S is formed with respect to the outer periphery of the end portion of the work W as a constituent member of the side molding.
In the state where the upper and lower mask blocks 3 and 4 are formed, and a predetermined pressure of air is introduced into the gap S between the work W and the upper and lower mask blocks 3 and 4 to form the work. The second step of discharging the end face Fa of W to the outside and the spray device 13 toward the end face Fa of the work W at a pressure lower than the air pressure introduced into the gap S.
And a third step of spraying the adhesive.

Therefore, the upper and lower mask blocks 3 and 4 are arranged in the first step, and air is introduced into the gap between the work W and the mask blocks 3 and 4 in the second step to remove the work W. The adhesive is sprayed from the periphery of the end face Fa and is sprayed on the end face Fa of the work W in the third step. At this time, the adhesive is sprayed on the outer periphery and the end face of the work W by the air released from the periphery of the end face of the work W. Adhesion to the corners around Fa is prevented.

Therefore, the adhesive is applied all over the end face Fa of the work W without requiring the skill of the operator, and the end molding material 14 is peeled off due to insufficient application of the adhesive, or the end face Fa of the adhesive is removed. It is possible to prevent the appearance failure and the like due to the food being eaten out.

Further, since no masking tape is used, the work of attaching and peeling the masking tape can be omitted to improve the work efficiency, and the cost of purchasing the tape is not required, so that the manufacturing cost can be reduced.

Further, in the above embodiment, the upper and lower mask blocks 3 and 4 are arranged in a state where a predetermined gap S is formed with respect to the outer periphery of the end portion of the work W as a constituent member of the side molding, The spray device 13 is disposed so as to face the end face Fa of the work W and sprays the adhesive at a predetermined pressure toward the end face Fa, and the spray device 13 is provided in the gap S between the work W and the upper and lower mask blocks 3 and 4. An on-off valve 9 and an air supply source 10 are provided for introducing air having a higher pressure than the injection pressure of 1 to discharge the air from around the end face Fa of the work W to the outside.

Therefore, the air from the air supply source 10 is introduced into the gap S between the work W and the mask blocks 3 and 4 through the opening / closing valve 9 and is discharged from the periphery of the end face Fa of the work W and from the spray device 13. When the adhesive is sprayed on the end face Fa of the work W, the air prevents the adhesive from adhering to the outer periphery of the work W and / or the corners around the end face Fa.

Therefore, the adhesive is applied all over the end face Fa of the work W without requiring the skill of the operator, and the end molding material 14 is peeled off due to insufficient application of the adhesive, or the end face Fa of the adhesive is removed. It is possible to prevent the appearance failure and the like due to the food being eaten out.

Further, since the masking tape is not used, the attaching and peeling work can be omitted to improve the working efficiency, and the manufacturing cost can be reduced because the tape purchasing cost is unnecessary.

[Second Embodiment] FIG. 5 is a front view of a work and a mask block in a fine particle coating apparatus according to a second embodiment of the present invention.

As shown in the figure, in this embodiment, three sets of recesses 5 and protrusions 6 are formed in the upper and lower mask blocks 21 and 22, respectively, and an adhesive can be applied to the end faces Fa of the three works W at the same time. It is like this. Therefore, although not shown, three spray devices are arranged corresponding to each work W.

In the fine particle coating device thus constructed, in addition to the working effect described in the first embodiment, since three works W can be processed at the same time, the working efficiency can be further improved.

[Third Embodiment] FIG. 6 is an explanatory view showing the structure of a fine particle coating device according to a third embodiment of the present invention.

As shown in the figure, in this embodiment, the upper and lower mask blocks 31, 32 and the spraying device 33 are arranged at both ends of the work W. Therefore, the adhesive can be applied to both end faces Fa of the work W at the same time.

In the fine particle coating device thus constructed, in addition to the effects described in the first embodiment, both end faces Fa of the work W can be processed at the same time, so that the working efficiency can be further improved. it can.

[Fourth Embodiment] FIG. 7 is a front view of a mask block as a constituent member of a fine particle coating apparatus according to a fourth embodiment of the present invention.

As shown in the figure, the work W to be processed by the fine particle coating device of this embodiment has a very thin thickness, and the design surface 43 has unevenness. The concave portion 44 of the upper mask block 41 has a flat internal shape without corresponding to the irregularities of the design surface 43 of the work W, and forms a gap S with the design surface 43. Further, the lower mask block 42 contacts the back surface of the work W, and no gap is formed between them.

As described above, the inside of the recess 44 is flat, but the unevenness of the design surface 43 is gentle, so that the thickness C of the gap S does not greatly vary. Therefore, when the adhesive is applied, the work W
It is possible to prevent the adhesive from adhering to the side of the design surface 43. Further, since there is no gap formed on the back surface side of the work W, the adhesive may adhere, but since this back surface is a surface to be mounted on the vehicle, there is a possibility that the appearance of the side molding may be deteriorated. Absent.

In the fine particle coating apparatus thus constructed, in addition to the operation and effect described in the first embodiment, the recess 44 of the upper mask block 41 is formed into a flat shape, so that the processing of the recess 44 is simplified. In addition, since the gap is not formed on the back surface side of the work W, the processing of the lower mask block 42 is also simplified. Therefore, the mask blocks 41 and 42 can be easily manufactured, and the facility cost can be reduced.

By the way, the above embodiment is constituted as a fine particle applying method and a fine particle applying apparatus for applying an adhesive to the end face Fa of the work W, which is premised on the constituent member of the side molding. However, the present invention is not limited to this, and may be embodied in a fine particle applying method or a fine particle applying apparatus for another work as long as the end surface of the work is applied.

Then, as the fine particle coating of the above-mentioned embodiment,
Although it is premised that an adhesive is applied, the present invention is not limited to an adhesive, but can be applied to an adhesive that contains a paint and can be atomized into fine particles by air.

Further, the masking member of the above-mentioned embodiment is vertically contacted and separated, and the upper and lower mask blocks 3, 4, 21, 22, 31, 3 for sandwiching the work W of the side molding.
Although it is configured as 2, 41, 42, the present invention is not limited to this and can be arranged in a state in which a gap S is formed with respect to the outer circumference of the end portion of the work W. Anything will do. Thus, for example, the upper and lower mask blocks 3, 4, 21, 22, 31, 32, 4
1, 42 may be integrated, and the end portion of the work W may be inserted into the hole formed by the concave portions 5, 44 and the protrusion 6.

Further, the air supply means of the above embodiment is composed of the air supply source 10 and the opening / closing valve 9 for controlling the air from the air supply source 10. However, the air is not limited to the above, and any air can be introduced into the gap S at a predetermined pressure.

[0054]

As described above, the method for applying fine particles according to the first aspect of the present invention includes the first step of disposing the masking member in the state where a gap is formed on the outer periphery of the end portion of the work, and the air in the gap. Of the masking member in the first step because it has a second step of introducing the gas into the periphery of the end surface of the work and a third step of spraying fine particles onto the end surface of the work. In the second step, air is introduced into the gap between the work and the masking member to be discharged from around the end surface of the work, and in the third step, fine particles are sprayed on the end surface of the work. The air discharged from the periphery of the end surface of the work prevents the fine particles from adhering to the outer periphery of the work or the corners around the end surface, so that only the end surface of the work can be selectively applied without skill. And without using masking tape It is possible to improve work efficiency by omitting the sticking and peeling operation since,
Manufacturing costs can be reduced without the need to purchase masking tape.

Further, the fine particle coating device of the second invention is such that the masking member is arranged in a state where a gap is formed on the outer periphery of the end portion of the work, the spray means arranged to face the end surface of the work, Since air is introduced into the gap and is discharged from the periphery of the end surface of the work, the air from the air supply means is introduced into the gap between the work and the masking member and the end surface of the work is introduced. When the fine particles are discharged from the periphery of the work and sprayed onto the end surface of the work from the spraying means, the air prevents the fine particles from adhering to the outer periphery of the work or the corners around the end surface, which requires skill. Without applying masking tape, it is possible to selectively apply only the end surface of the work at all times, and it is possible to improve work efficiency by omitting the sticking and peeling work. Come, and the manufacturing cost can be reduced without requiring the cost of masking tape.

[Brief description of drawings]

FIG. 1 is a sectional view taken along line XX of FIG. 3 showing the entire structure of a fine particle coating device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a work and a mask block according to the first embodiment of the present invention.

FIG. 3 is a front view of a work and a mask block according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing a completed side molding according to the first embodiment of the present invention.

FIG. 5 is a front view of a work and a mask block in a fine particle coating device according to a second embodiment of the present invention.

FIG. 6 is an explanatory diagram showing the structure of a fine particle coating device according to a third embodiment of the present invention.

FIG. 7 is a front view of a work and a mask block in a fine particle coating device according to a fourth embodiment of the present invention.

FIG. 8 is a perspective view showing a work to which a method for applying fine particles using a conventional masking tape is applied.

FIG. 9 is a perspective view showing a work of a side molding to which a conventional fine particle coating method is applied.

[Explanation of symbols]

3, 21, 31, 41 Upper mask block (masking member) 4, 22, 32, 42 Lower mask block (masking member) 9 Open / close valve (air supply means) 10 Air supply source (air supply means) 13 Spray device (spray) Means) W Work S Gap Fa End surface

Claims (2)

[Claims] 1. A first step of arranging a masking member in a state where a gap is formed with respect to an outer periphery of an end portion of a work, and introducing a predetermined pressure of air into the gap between the work and the masking member, A fine particle coating method comprising: a second step of discharging the air from the periphery of the end surface of the work to the outside; and a third step of spraying the fine particles toward the end surface of the work. 2. A masking member arranged in a state in which a predetermined gap is formed with respect to the outer periphery of the end portion of the work, and a masking member arranged so as to face the end surface of the work and spraying fine particles toward the end surface with a predetermined pressure. It is characterized by comprising spray means and air supply means for introducing air having a pressure higher than the injection pressure of the spray means into the gap between the work and the masking member and discharging the air from the periphery of the end face of the work to the outside. Fine particle coating device.