JP2000126658A - Masking method and masking member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely mask the part which has not been surface-treated by exerting a negative pressure on a member to be treated, a masking member and a gap between both members and chucking and masking the member to be treated by the deformation of the masking member at the same time. SOLUTION: One end and the other end of a roller member 1 are respectively inserted into a chucking and masking member 3 and a masking member 4. The air in the suction hole 6 of one-end flange face and attraction part 7 of one-end flange face is sucked from the suction slit 5 of one-end flange face of the chucking and masking member 3 and almost evacuated to attract the one-end flange face 14 of the roller member 1 and the attraction part 7 of the one-end flange face, and the roller member 1 is chucked. Further, the air in the suction hole 9 of one-end side face and the attraction part 10 of the roller side face is sucked from a suction slit 8 of one end and almost evacuated to attract the side face of the roller member 1 and the attraction part 10 of the roller side face, and one end of the roller member 1 is masked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a masking method. For example, when a member to be processed is subjected to a surface treatment such as plating, electrodeposition, or spray painting, a portion not subjected to the surface treatment while chucking the member to be processed. And a masking member.

[0002]

2. Description of the Related Art Hitherto, quality and merchantability have been improved by, for example, applying a surface treatment (surface coating) to all members by plating or painting to protect the surface of the members or to give a texture. In particular, surface treatment is frequently used for members used in electronic devices, for example, copying machines, printers, personal computers, notebook computers, word processors, mobile phones, and the like, whose number of products is increasing in recent years.

By the way, when a member is subjected to surface treatment,
Precise and simple masking is required at places where no surface treatment is applied. Conventionally used masking methods include, for example, a mold method, a resin coating method, and a taping method.

As described in Japanese Patent Application Laid-Open No. 6-233950, for example, a molding method is to form a masking material by molding a plastic sheet or other sheet-like base material, and fix and adhere the masking portion to the masking portion. In this method, the masking material is removed after plating and painting, and the masking material is reused for masking the next member and reused.

[0005] This type of molding method is based on the necessity of providing an electromagnetic shield mainly for protecting components and the like housed in the electronic equipment. Initially, this electromagnetic shield is provided inside the housing or case of the electronic equipment. Although a method of attaching a metal plate or a metal foil with an adhesive has been adopted, plating is gradually applied to the inside of a housing or the like from the viewpoint of saving labor.

[0006] The resin coating method is a method of applying a masking resin as a coating material to a portion where surface treatment is not desired, or impregnating a non-working portion with a masking resin solution and then heating to cure the masking resin. It is.

[0007] The taping method is a method in which a masking tape or a masking film is attached to a portion where surface treatment is not desired.

[0008]

However, the conventional various masking methods have the following problems. That is, in the mold method, since a masking mold is temporarily attached to a masking member with an adhesive, it is necessary to remove the adhesive after the surface treatment, which is inefficient, and depending on the type of adhesive, the masking member is adhered to the masking member. The agent sticks and sticks or remains.

In the resin coating method, since the coating material is a liquid resin, precise and accurate positioning on the masking portion is difficult. As shown in FIG.
The masking end faces of the coating portions 23a and 23b are not accurately masked due to resin flow. Also,
It must be heated to cure the coating resin and it is difficult to use it as a plastic material.Furthermore, after surface treatment, the coating resin must be dissolved with a chemical or the like to remove the coating resin. May be restricted.

[0010] The taping method is inefficient because it takes time and effort to mask and remove the masking material.
In particular, those having a complicated three-dimensional shape are more difficult and costly, and the degree of masking is sometimes insufficient.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to easily and surely apply masking to a member to be processed, and to perform masking and chucking simultaneously. An object of the present invention is to provide a masking method and a masking member that can be repeatedly performed.

[0012]

Means for Solving the Problems In order to solve the above-mentioned problems and achieve the object, a masking method according to the present invention comprises:
A masking member is disposed at a portion of the member to be processed where surface treatment is not performed, and a negative pressure is applied to a gap between the member to be processed and the masking member, and the member to be processed is chucked by deformation of the masking member. King and mask at the same time.

The masking member of the present invention is a masking member used for masking when a surface treatment is performed on a member to be processed, wherein the masking member is disposed on a non-processed portion of the member to be processed. A masking member for applying a negative pressure to a gap between the masking member and the masking member to chuck and simultaneously mask the member to be processed by deforming the masking member, wherein the masking member includes the member to be processed and the masking member. And a slit-shaped hole capable of sucking air existing in the gap with the gap and holding the gap in a negative pressure state.

The masking member of the present invention is a masking member used for masking when performing a surface treatment on a member to be processed, wherein the masking member is disposed in a portion of the member to be processed which is not subjected to the surface treatment. A masking member for applying a negative pressure to a gap between the masking member and the masking member to chuck and simultaneously mask the member to be processed by deforming the masking member, wherein the masking member includes the member to be processed and the masking member. And a suction nozzle capable of holding the gap in a negative pressure state.

[0015]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows an embodiment according to the present invention.
FIG. 9 is a cross-sectional view showing a state in which one end of the roller member is chucked and masked at the same time, and the other end of the roller member is masked. FIG. 2 is a top view of a chuck and mask member for chucking and masking one end of the roller member of FIG. FIG. 3 is a view of the chuck and mask member of FIG. 2 as viewed from below. FIG. 4 is a top view of a masking member for masking the other end of the roller member of FIG. FIG. 5 is a view of the masking member of FIG. 4 as viewed from below. FIG. 6 is a cross-sectional view of a main part showing an initial state of chucking by the chuck and mask member.
FIG. 7 is a cross-sectional view showing a state after chucking after suction of gas in the chuck and mask member from the state of FIG. FIG. 8 is a diagram illustrating a state where the suction slit of the masking member is enlarged.

As shown in FIGS. 1 to 5, reference numeral 1 denotes a roller member as a masking material having a portion to be subjected to a surface treatment, 2 denotes a flange shaft projecting from both ends of the roller member 1, and 3 denotes a roller member. One end is a chuck and mask member.

The chuck and mask member 3 is formed in a cylindrical shape so as to cover a masking portion such as one end portion or side surface portion of the roller member 1. The chucking and masking of one end portion of the roller member 1 are performed at the same time as the material to be masked. Is made of silicone rubber or the like which has a certain degree of flexibility and chemical resistance in order to improve the adhesion to the roller member 1.

Reference numeral 5 denotes a slit at one end flange surface suction opening formed on the chuck & mask member 3 for sucking the one end flange surface 14 of the roller member 1. Reference numeral 6 denotes a one-end flange surface suction hole that communicates with the suction portion of the one-end flange surface 14 on the inner surface of the chuck & mask member 3 from the one-end flange surface suction port slit 5. Reference numeral 7 denotes a one-end flange surface adsorbing portion for adsorbing the one-end flange surface 14, which is formed in a circular groove along the circumferential shape of the one-end flange surface 14. Reference numeral 8 denotes a one-end suction port slit for masking one end of the roller member 1 by the chuck & mask member 3 attracted to one end of the roller member 1. Reference numeral 9 denotes one end side suction hole which communicates with the suction portion on the roller side surface on the inner surface of the chuck & mask member 3 from the one end suction slit 8. Reference numeral 10 denotes a roller side suction unit for masking the chuck and mask member 3 on the roller side surface, and has a groove formed along the roller side surface.

Reference numeral 4 denotes a masking member which is formed in a cylindrical shape so as to cover a masking portion such as the other end portion and the side surface portion of the roller member 1, and masks the other end portion of the roller member 1.
Like the chuck and mask member 3, it is made of silicon rubber or the like. Reference numeral 11 denotes another end flange surface suction port slit formed on the masking member 4 to attract the other end flange surface 15 of the roller member 1. Reference numeral 12 denotes another end flange surface suction portion which communicates with the suction portion of the other end flange surface 15 on the inner surface of the masking member 4 from the other end flange surface suction port slit 11. Reference numeral 13 denotes a stopper for positioning the masking member 4 at a masking position at the other end of the roller member 1.

Each of the suction port slits 5 and 8 is capable of sucking air existing in a gap between the chuck & mask member 3 and one end of the roller member 1 and holding the gap in a negative pressure state. Similarly, the suction port slit 11 can suck air existing in a gap between the masking member 4 and the other end of the roller member 1 and can hold this gap in a negative pressure state.

Next, the chucking and masking method of this embodiment will be described.

First, the chuck and mask member 3 and the masking member 4 are fitted into one end and the other end of the roller member 1, respectively.

The inner diameters of the chuck and mask member 3 and the masking member 4 are set to be substantially the same as or slightly larger (or smaller) than the outer diameter of the roller member 1, and the outer diameter of the roller member 1 and the chuck and mask member 3 are set. The degree of vacuum by suction is set to be the highest according to the material of the rubber constituting the masking member 4 and the like.

Next, the air in the one-end flange surface suction hole 6 and the one-end flange surface suction portion 7 is sucked from the one-end flange surface suction port slit 5 of the chuck & mask member 3 to make the state close to a vacuum, so that the roller is closed. The one end flange surface 14 and the one end flange surface suction portion 7 of the member 1 are sucked, and the roller member 1 is chucked. Further, one end suction hole slit 8 and one end side suction hole 9 and roller side suction portion 10
The inside of the roller member 1 is suctioned to make the state close to a vacuum, whereby the side surface portion of the roller member 1 and the roller side suction portion 10 are sucked, and one end portion of the roller member 1 is masked.

In a similar procedure, the air in the other end flange surface suction hole 12 is sucked from the other end flange surface suction hole slit 11 of the masking member 4 to make the state close to a vacuum, so that the other end of the roller member 1 The flange surface 15 and the inner surface of the masking member 4 are attracted and the other end of the roller member 1 is masked.

As shown in FIGS. 1 and 4, the masking member 4 has three stoppers 13 projecting therefrom so as to abut the flange surface 15 at the other end in a state of being attracted to the other end of the roller member 1. The masking position of the other end of the roller member 1 is determined by the stopper 13.

It should be noted that the air pressure inside the one-side flange surface suction hole 6, the one-side flange surface suction portion 7, the one-side side suction hole 9, and the roller side suction portion 10 is different between the one-side flange surface suction port slit 5 and the one-side suction port slit 8. Since the airtightness is achieved by lowering the pressure, a low internal pressure is maintained.

In this state, chucking and masking of the roller member 1 are completed, and the masked roller member is conveyed to a surface treatment step by gripping the chuck & mask member 3 by a robot arm (not shown) or the like. be able to. [Second Embodiment] As shown in FIG. 6, in order to facilitate the conveyance of the roller member 1 by the chuck & mask member 3,
The transfer suction nozzle 17 that can suck air existing in the gap between the roller member 1 and the chuck and mask member and that can hold the gap in a negative pressure state is brought into contact with the one end opening 16 of the roller member 1. Then, by sucking the air in the gap in the direction of arrow 18, the suction nozzle 17 for conveyance is attracted to the chuck & mask member 3, and the roller member 1 can be gripped and conveyed. Since the transport suction nozzle 17 needs to be positioned in the surface treatment step of the roller member 1 or the like, a plastic resin or metal having a certain degree of hardness is desirable.

When the transfer suction nozzle 17 is used,
As shown in FIG. 7, the chuck & mask member 3 is deformed by sucking the air inside the opening 16 at one end, and is reliably chucked by sandwiching the flange shaft 2 at one end. Here, a gap t1 between the inner diameter of the one end opening 16 of the chuck & mask member 3 and the outer diameter of the flange shaft is:
It is preferable to set the dimension to maximize the chucking force in consideration of the elasticity of the rubber.

Next, a case where the chuck and mask member 3 and the masking member 4 are removed from the roller member 1 after the surface treatment step is completed will be described.

As shown in FIG. 8, the chuck and mask member 3 and the masking member 4 are applied with a compressing force 19 from both sides along the length direction of the slits of the members 3 and 4 to apply a flange surface suction port at one end. By opening the slit 5, one end suction port slit 8 and the other end flange surface suction port slit 11, the inside can be opened to the atmosphere and removed.

When the transfer suction nozzle 17 is used, the suction state can be released by a suction device (not shown) connected to the nozzle 17, and the nozzle 17 can be removed by opening to the atmosphere.

In the above-described embodiment, the suction from the one-end flange surface suction port slit 5 and the one-end suction port slit 8 are individually performed, but the suction may be performed simultaneously. Third Embodiment FIG. 9 is a cross-sectional view showing a third embodiment in which a chuck and mask member and a transfer suction nozzle are integrally incorporated. FIG. 10 is a cross-sectional view showing a chucking and masking state by the chuck and mask member.

As shown in FIG. 9, the transfer suction nozzle 21
A flange 21a is formed at one end of the chuck and mask member 2 by integrally fitting one end opening of the chuck and mask member 20 to the flange 21a.
0 and the transfer suction nozzle 21 can be integrated with each other while maintaining airtightness.

In order to perform chucking and masking, air in the chuck and mask member 20 may be sucked in the direction of arrow 22 by a suction device (not shown).

At the time of air suction, a chuck is formed so that the masking surface 21a, one end flange surface 21b, and the flange shaft surface 21c are gradually sucked in this order to securely hold the masking side surface of the roller member 1 and the flange shaft 2 therebetween. The distance t2 between the masking side surface 21a of the & mask member 20 and the roller surface 1a of the roller member 1, the flange surface 21b of the chuck & mask member 20 and the one end flange surface 14 of the roller member 1
, And the interval t4 between the flange shaft surface 21c of the chuck & mask member 20 and the outer peripheral surface of the flange shaft 2 of the roller member 1 is defined as t2 <t3 <t4. It can be applied to the case where 8 and 11 are used, and is set to a value at which the degree of vacuum by suction is the highest.

As described above, the roller member 1 and the chuck &
The gap between the mask member 20 and the suction port slits 5, 8, 11
Alternatively, by setting the distance to be larger as the position is closer to the suction nozzle for conveyance, air is gradually sucked from a narrow space, and as shown in FIG. As a result, the chuck & mask member 20 is deformed and attracted to the roller member 1, so that chucking and masking can be reliably performed.

When the chucking and masking member 20 is removed from the roller member 1 after the completion of the surface treatment step, the suction state is released by a suction device (not shown) connected to the transfer suction nozzle 21 and the atmosphere is released to the atmosphere. Can be removed.

As described above, according to the above embodiments,
The chucking and masking of the roller member and the like can be performed reliably and easily, and the roller member and the like can be easily removed even after the surface treatment, so that no adhesive or the like remains.

The present invention can be applied to a modified or modified embodiment without departing from the spirit of the invention.

In the present embodiment, silicon rubber or the like having elasticity is used as the material of the chuck & mask member and the masking member in consideration of the adhesion to the roller member 1. For example, as long as the material has adhesiveness and masking property, for example, Viton having a certain degree of elasticity can be used.

[0043]

As described above, according to the present invention,
When a surface of a member to be processed such as a roller is subjected to a surface treatment, the gap between the member to be processed and the masking member is set in a negative pressure state, so that the member to be processed is simultaneously masked and chucked, and the surface treatment is not performed. Can be simply and reliably performed, and can be repeated many times.

[0044]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state in which one end of a roller member is chucked and masked at the same time and the other end of the roller member is masked as an embodiment according to the present invention.

FIG. 2 is a top view of a chuck and mask member for chucking and masking one end of the roller member of FIG. 1;

FIG. 3 is a view of the chuck and mask member of FIG. 2 viewed from below.

FIG. 4 is a top view of a masking member for masking the other end of the roller member of FIG. 1;

5 is a view of the masking member of FIG. 4 as viewed from below.

FIG. 6 is a sectional view of a main part showing an initial state of chucking by a chuck and mask member.

7 is a cross-sectional view showing a state after chucking after suction of gas in the chuck and mask member from the state of FIG. 6;

FIG. 8 is a diagram showing a state where a suction slit of a masking member is enlarged.

FIG. 9 is a cross-sectional view showing a state in which the chuck and mask member and the suction nozzle are integrated.

FIG. 10 is a cross-sectional view showing a chucking and masking state by a chuck and mask member.

FIG. 11 is a view showing a masking state by a conventional resin coating method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roller member 2 Flange shaft 3 Chuck & mask member 4 Masking member 5, 8, 11 Suction port slit 17, 21 Suction nozzle

Claims (14)

[Claims] 1. A masking method for performing a surface treatment on a member to be treated, wherein a masking member is disposed in a portion of the member to be treated where no surface treatment is performed, and a gap between the member to be treated and the masking member is provided. A masking method comprising applying a negative pressure to chuck and simultaneously mask the workpiece by deformation of the masking member. 2. The masking member is formed with a slit-shaped hole capable of sucking air existing in a gap between the member to be processed and the masking member and holding the gap in a negative pressure state. 2. The masking method according to claim 1, wherein: 3. The masking member can be provided with a suction nozzle capable of sucking air existing in a gap between the processing target member and the masking member and holding the gap in a negative pressure state. The masking method according to claim 1, wherein: 4. The masking member is integrally provided with a suction nozzle capable of sucking air existing in a gap between the processing target member and the masking member and capable of holding the gap in a negative pressure state. The masking method according to claim 1, wherein the masking method is used. 5. The masking member according to claim 2, wherein a gap between the member to be processed and the masking member is set to be larger as the gap is closer to the slit-shaped hole or the suction nozzle. 5. The masking method according to any one of 4. 6. The masking method according to claim 1, wherein the masking member is transported to a surface treatment step in a state where the member to be processed is chucked. 7. The masking method according to claim 5, wherein the slit-shaped hole or the suction nozzle releases the chucking by introducing air into the gap. 8. The masking method according to claim 1, wherein the masking member is made of silicone rubber having elasticity. 9. A masking member used for masking when performing a surface treatment on a member to be processed, wherein the masking member is disposed in a portion of the member to be processed that is not subjected to the surface treatment, and is provided in a gap between the member to be processed and the masking member. Apply negative pressure,
A masking member that simultaneously masks the member to be processed by deformation of the masking member, and the masking member can suck air existing in a gap between the member to be processed and the masking member,
A masking member having a slit-like hole capable of holding the gap in a negative pressure state. 10. A masking member used for masking when performing a surface treatment on a member to be processed, wherein the masking member is disposed in a non-processed portion of the member to be processed and has a gap between the member to be processed and the masking member. A masking member for applying a negative pressure to chuck and mask the member to be processed by deformation of the masking member, wherein the masking member includes air existing in a gap between the member to be processed and the masking member. Can be sucked,
A masking member, wherein a suction nozzle capable of holding the gap in a negative pressure state can be mounted. 11. The masking member according to claim 10, wherein the suction nozzle is integrated with the masking member. 12. The masking member according to claim 9, wherein a gap between the processing target member and the masking member is set to be larger as the gap is closer to the slit-shaped hole or the suction nozzle. 12. The masking member according to any one of items 11 to 11. 13. The masking member according to claim 12, wherein the slit-shaped hole or the suction nozzle can release chucking by introducing air into the gap. 14. The masking member according to claim 9, wherein the masking member is made of silicone rubber having elasticity.
The masking member according to any one of the above.