JP2020124852A - Workpiece coating device and workpiece coating method - Google Patents

Abstract

To provide an effective technique for reducing the size of a facility for coating a workpiece with a sheet material.SOLUTION: A film attaching device 1 as a workpiece coating device is for coating a workpiece 2 with a film 30 as a sheet material, and is provided with: a frame-shaped assembling tool 10 assembled to the workpiece 2 so as to surround a coating surface 2a; and an evacuation device 20 mounted on the assembling tool 10. The evacuation device 20 evacuates an in-frame space 10a in a state in which the in-frame space 10a of the assembling tool 10 is closed by the coating surface 2a of the workpiece 2 from one opening surface 10b side and closed with the film 30 from the other opening surface 10c side, to vacuum-adhere the film 30 to the coating surface 2a.SELECTED DRAWING: Figure 1

Description

The present invention relates to a technique of coating a work with a sheet material.

The following Patent Documents 1 and 2 both disclose this type of technique for coating a work with a sheet material.

The reduced pressure coating device described in Patent Document 1 is a device used when a core material that is a work is coated with a skin material that is a sheet material. This decompression coating device is equipped with a chamber box as a container capable of containing a core material. The core material and the skin material are both housed and sealed in the chamber box, and the core material and the skin material are sealed in a sealed space inside the chamber box. The core material is configured to be covered with the skin material by utilizing the pressure reduction of the material integrally.

The vacuum forming apparatus described in Patent Document 2 is an apparatus used when a vehicle body that is a work is covered with a decorating film that is a sheet material. This vacuum forming apparatus is provided with a housing chamber as a housing capable of housing the vehicle body. The vehicle body and the film are both housed in the housing chamber and hermetically sealed, and the vehicle body and the film are integrally formed in a sealed space inside the housing chamber. By utilizing decompression, a part of the vehicle body is covered with a film.

JP, 2005-262501, A JP, 2015-44285, A

When the techniques disclosed in Patent Documents 1 and 2 are used, a large container that can enclose the entire work and a large decompression device that can decompress the internal space of the container are required. For this reason, there is a problem that the equipment used for coating the work with the sheet material becomes large. Such a problem becomes more remarkable when the work is large like a vehicle.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an effective technique for reducing the size of equipment for coating a work with a sheet material.

One aspect of the present invention is
A work coating device for coating a work with a sheet material,
A frame-shaped assembly jig that is assembled to the work so as to surround the covering surface,
A decompression device attached to the assembly jig,
Equipped with
The frame inner space is decompressed by the decompression device in a state where the frame inner space of the assembling jig is closed from the one opening surface side by the covering surface of the work and is closed by the sheet material from the other opening surface side. It is configured so that the sheet material is brought into close contact with the coating surface under reduced pressure by a work coating apparatus,
It is in.

Another aspect of the invention is
A method for covering a work with a sheet material, comprising:
A preparatory step of assembling the frame-shaped assembling jig so as to surround the covering surface on the work, attaching a pressure reducing device to the assembling jig, and setting the sheet material,
The frame inner space is decompressed by the decompression device in a state where the frame inner space of the assembling jig is closed from the one opening surface side by the covering surface of the work and is closed by the sheet material from the other opening surface side. By a coating step in which the sheet material is adhered to the coating surface under reduced pressure,
A work coating method,
It is in.

In each of the above aspects, when the frame-shaped assembly jig is assembled to the work, the covering surface of the work is surrounded by the assembly jig. After that, the sheet material is set on the assembly jig, so that the space inside the frame of the assembly jig is closed by the covering surface of the work from one opening surface side and the sheet material from the other opening surface side. It becomes a loose and sealed state. In this sealed state, the pressure reducing device reduces the pressure inside the frame of the assembling jig so that the sheet material is brought into close contact with the covering surface of the work under reduced pressure. As a result, only the desired covering surface of each part of the work is selectively covered with the sheet material.

In this case, since the space inside the frame of the assembling jig is partitioned by using the covering surface of the work and the sheet material, the size of the assembling jig may be a size corresponding to the area of the covering surface of the work. .. Therefore, the size of the space inside the frame relating to decompression can be kept small, and a large container that can enclose the entire work and a large decompression device that can decompress the internal space of this container are not required. .. That is, it suffices to prepare a small assembly jig suitable for the area of the covering surface of the workpiece and a small decompression device capable of decompressing the low-volume frame space in the assembly jig.

As described above, according to each of the above aspects, it is possible to provide an effective technique for reducing the size of equipment for covering a work with a sheet material.

FIG. 3 is an exploded perspective view of the film sticking apparatus according to the first embodiment. The perspective view which shows the assembly jig of FIG. 1 in the state assembled to the workpiece|work. The perspective view which expands and shows the A area|region of FIG. The perspective view which expands and shows the B area|region of FIG. FIG. 2 is a cross section taken along the line V-V in FIG. A cross section taken along the line VI-VI in FIG. The VII-VII line arrow cross section of FIG. VIII-VIII line sectional view of FIG. 3 is a flowchart of the film sticking method of the first embodiment. The perspective view which shows the mode of the 1st step in FIG. 9 typically. The perspective view which shows the mode of the 1st step in FIG. 9 typically. Sectional drawing which shows the mode of the 1st step in FIG. 9 typically. Sectional drawing which shows the mode of the 2nd step in FIG. 9 typically. Sectional drawing which shows the mode of the 3rd step in FIG. 9 typically. Sectional drawing which shows the mode of the 4th step in FIG. 9 typically. Sectional drawing which shows the mode of the 5th step in FIG. 9 typically. Sectional drawing which shows the mode of the 6th step in FIG. 9 typically. Sectional drawing which shows the mode of the 7th step in FIG. 9 typically. Sectional drawing which shows the mode of the 8th step in FIG. 9 typically. Sectional drawing which shows the mode of the 9th step in FIG. 9 typically. The exploded perspective view corresponding to FIG. 1 about the film sticking apparatus of Embodiment 2.

A preferred embodiment of the above aspect will be described.

In the above work covering apparatus, it is preferable that the assembling jig has a positioning portion that can engage with an engaged portion provided on the work.

According to this work covering device, the assembly jig can be easily assembled at a desired position on the work by engaging the positioning portion of the assembly jig with the engaged portion of the work.

In the above work covering apparatus, it is preferable that the assembling jig is composed of a plurality of frames that are detachably connected to each other.

According to this work covering device, by separating the assembling jig into a plurality of frames when not in use, it is possible to prevent the assembling jig from becoming bulky during transportation and storage.

It is preferable that the work covering device includes a heating device for heating the sheet material from a side opposite to the frame inner space.

According to this work covering device, the sheet material can be easily softened so as to follow the covering surface of the work including the three-dimensional shape by heating the sheet material with the heating device in the decompressed state of the frame inner space.

In the above work covering apparatus, it is preferable that the assembling jig includes a seal member interposed between the assembly jig and the covering surface of the work.

According to this work covering device, since the assembling jig comes into contact with the covering surface of the work through the sealing member, the sealing member enhances the degree of sealing of the inner space of the frame of the assembling jig during depressurization. be able to.

In the above work covering device, the seal member is made of a flexible and porous material, and the seal member is crushed by a tensile load by which the sheet material pulls the assembly jig during depressurization of the frame inner space. It is preferably configured so that the degree of sealing of the space inside the frame is enhanced.

According to this work covering device, by using the seal member made of a flexible and porous material, the seal member is crushed according to the degree of sealing of the space inside the frame of the assembly jig, and the assembly jig is crushed. It is possible to add a function of adjusting the sealing performance between the work and the coated surface of the work.

In the work covering method, in the preparing step, the positioning jig provided on the assembly jig is engaged with the engaged portion provided on the work to assemble the assembly jig to the work. Is preferred.

According to this work covering method, the assembly jig can be easily assembled at a desired position of the work by engaging the positioning portion of the assembly jig with the engaged portion of the work in the preparation step. ..

The work coating method, a cutting step for cutting a residual portion of the sheet material that is in vacuum contact with the coating surface by the coating step,
Winding the edge portion of the sheet material, the excess portion of which is cut in the cutting step, into the engaged portion of the work after the engagement with the positioning portion of the assembly jig is released. Included steps,
It is preferable to have

According to this work covering method, the engaged portion of the work that engages with the positioning portion of the assembling jig can be used as a place for winding the edge portion of the sheet material after releasing the engagement.

In the above work covering method, it is preferable that in the covering step, the sheet material is heated from a side opposite to the frame inner space to be softened so as to follow the covering surface of the work.

According to this work covering method, by heating the sheet material in the decompressed state of the space in the frame, the sheet material can be easily softened so as to follow the covering surface of the work including the three-dimensional shape.

Hereinafter, specific embodiments of the work coating apparatus and the work coating method will be described with reference to the drawings.

In the drawings for explaining this embodiment, the front side of the vehicle is indicated by an arrow FR, the upper side of the vehicle is indicated by an arrow UP, and the inside of the vehicle is indicated by an arrow IN.

Unless otherwise specified, the first direction that is the longitudinal direction of the assembling jig is indicated by arrow X, the second direction that is the width direction of the assembling jig is indicated by arrow Y, and the first direction X and the first direction X An arrow Z indicates a third direction which is a direction orthogonal to any of the two directions Y and which is a height direction of the assembling jig.

(Embodiment 1)
As shown in FIG. 1, a film sticking device 1 as a work covering device is for covering a work 2 with a film 30 as a sheet material.

In this embodiment, the work 2 is the vehicle body of the automobile, and the covering surface 2a of the work 2 is the outer surface of the roof panel 3 which is the exterior of the vehicle body. As the film 30, a decorative resin film sheet for decorating the covering surface 2a of the work 2 is used. This film 30 has flexibility. The film 30 preferably also has functions such as waterproofing and antifouling.

The film sticking device 1 includes an assembling jig 10, a depressurizing device 20, and a heating device 24.

The assembly jig 10 is a frame-shaped jig that is assembled to the work 2 so as to surround the covering surface 2a. The assembling jig 10 is configured such that the plan view in the third direction Z forms a substantially rectangular shape. The assembling jig 10 has a frame inner space 10a, one opening surface 10b with respect to the frame inner space 10a, and the other opening surface 10c with respect to the frame inner space 10a.

As will be described later in detail, the film sticking apparatus 1 is configured such that the frame inner space 10a of the assembling jig 10 is closed with the covering surface 2a of the work 2 from one opening surface 10b side and the film 30 from the other opening surface 10c side. In the closed state, the decompression device 20 decompresses the inner space 10a of the frame so that the film 30 is brought into close contact with the covering surface 2a under reduced pressure.

The assembling jig 10 is composed of four frames 11, 12, 13, and 14 that are separably connected to each other. Each of the four frames 11, 12, 13, 14 is made of a resin material. At least one frame 13 among the four frames 11, 12, 13, and 14 is provided with a through hole 10d penetratingly formed so as to communicate with the in-frame space 10a.

The number of frames forming the assembly jig 10 is not limited to four, and can be changed as necessary. For example, at least one of the four frames 11, 12, 13, and 14 can be divided into a plurality of parts.

Further, the material of the four frames 11, 12, 13, 14 is preferably a resin material in order to reduce the weight of the assembling jig 10. However, the material is not limited to the resin material, and for example, resin A metal material may be used instead of the material.

The decompression device 20 is a device externally attached to the assembling jig 10, and includes a decompression pipe 21, a vacuum pump 22, and a vacuum pressure gauge 23. One end 21 a of the pressure reducing pipe 21 can be connected to the through hole 10 d of the assembly jig 10, and the other end 21 b is connected to the vacuum pump 22. The vacuum pump 22 is a suction pump having the capability of forming a vacuum state in the closed space. A vacuum pressure gauge 23 capable of visually observing the degree of sealing of the frame inner space 10a is connected to a region between the one end 21a and the other end 21b of the decompression pipe 21.

The heating device 24 is for heating the film 30 from the opposite side of the frame inner space 10 a of the assembly jig 10. Although the description of the specific structure is omitted, the heating device 24 is composed of a fan heater, an infrared heater, a dryer, and the like.

As shown in FIG. 2, the decompression device 20 is attached to the assembly jig 10 by connecting one end 21 a of the decompression pipe 21 to the through hole 10 d of the assembly jig 10. According to the decompression device 20, the vacuum pump 22 is activated to suck the vacuum in the frame inner space 10a of the assembly jig 10.

As shown in FIG. 3, in the area A (see FIG. 2) of the assembling jig 10, the two frames 11 and 13 include the left end portion 11a of the one frame 11 in the second direction Y and the other frame 13. And the front end portion 13a in the first direction X are engaged with each other to be connected. The engagement surface 15 at the left end portion 11a of the frame 11 is provided with a plurality of engagement pins 15a standing upright in the third direction Z. On the other hand, a plurality of engagement holes 16a extending in the third direction Z are provided on the engagement surface 16 of the front end portion 13a of the frame 13 that faces the engagement surface 15 of the frame 11.

Here, the engaging pin 15a is dimensioned such that its standing height is equal to or slightly below the depth of the engaging hole 16a. Further, the engagement pin 15a is dimensioned so that its outer diameter is equal to or slightly smaller than the inner diameter of the engagement hole 16a. Therefore, when the engagement surface 15 of the frame 11 and the engagement surface 16 of the frame 13 are aligned with each other, each of the plurality of engagement pins 15a can be fitted into each of the plurality of engagement holes 16a. There is.

Although not particularly shown, the connecting structure of the two frames 11 and 14 in the area C (see FIG. 2) of the assembling jig 10 is similar to the connecting structure shown in FIG.

As shown in FIG. 4, in the area B (see FIG. 2) of the assembling jig 10, the two frames 12 and 13 include the left end portion 12a of the one frame 12 in the second direction Y and the other frame 13. And the rear end portion 13b of the first direction X are engaged with each other to be connected. A plurality of engagement pins 17a provided upright in the third direction Z are provided on the engagement surface 17 at the left end 12a of the frame 12. On the other hand, a plurality of engagement holes 18a extending in the third direction Z are provided on the engagement surface 18 of the rear end portion 13b of the frame 13 that faces the engagement surface 17 of the frame 12.

Here, the engagement pin 17a is dimensioned such that the standing height thereof is equal to or slightly below the depth of the engagement hole 18a. Further, the engagement pin 17a is dimensioned such that the outer diameter thereof is equal to or slightly smaller than the inner diameter of the engagement hole 18a. Therefore, when the engagement surface 17 and the engagement surface 18 of the frame 12 are aligned with each other, each of the plurality of engagement pins 17a can be fitted into each of the plurality of engagement holes 18a.

Although not particularly shown, the connecting structure of the two frames 12 and 14 in the area D (see FIG. 2) of the assembling jig 10 is similar to the connecting structure shown in FIG.

As shown in FIG. 5, the frame 11 of the assembly jig 10 is composed of an upper member 11A and a lower member 11B joined to each other, and a gap as a positioning portion is provided between the upper member 11A and the lower member 11B. 11c. The gap 11c is configured to be engageable with the protrusion 3c as the engaged portion provided on the work 2.

The roof panel 3 of the work 2 has a thin plate-shaped roof outer panel 3a and a roof inner panel 3b each made of a metal material, and is configured by joining the roof outer panel 3a and the roof inner panel 3b to each other. .. A cover surface 2a of the work 2 is formed by the upper surface of the roof outer panel 3a.

The protruding portion 3c of the work 2 is configured by the front end portion of the roof panel 3 in the first direction X. The frame 11 is assembled to the work 2 so that the protrusion 3c is inserted into the gap 11c.

The frame 11 of the assembling jig 10 includes a seal member 19 that is interposed between the frame 11 and the covering surface 2a of the work 2 (the upper surface of the roof outer panel 3a). The seal member 19 is made of a flexible and porous material such as sponge (foam material).

The sealing member 19 has a sealing function of sealing between the frame 11 and the covering surface 2a, and when the frame 11 is assembled to the roof panel 3, the frame 11 directly contacts the covering surface 2a and thus the covering surface 2a. 2a has a function of preventing scratches.

Further, the sealing member 19 has air permeability, and the air permeability decreases as it is crushed by an external load. Therefore, the seal member 19 crushes depending on the degree of sealing of the frame inner space 10 a of the assembly jig 10. , Fulfills the function of adjusting the sealing performance between the assembling jig 10 and the covering surface 2a of the work 2.

As shown in FIG. 6, the frame 13 of the assembly jig 10 has a convex portion 13c as a positioning portion. The convex portion 13c is configured to be engageable with the Mohican portion 7 as an engaged portion provided on the work 2.

The Mohican portion 7 of the work 2 is a recess formed between the left end portion of the roof panel 3 and the left roof side panel 4. The frame 13 is assembled to the work 2 so that the convex portion 13c is inserted into the Mohican portion 7. Similar to the case of the frame 11, the frame 13 includes a seal member 19 that is interposed between the frame 13 and the covering surface 2 a of the work 2.

The roof side panel 4 of the work 2 has a roof side outer panel 4a and a roof side inner panel 4b, both of which are made of a metallic material, and the roof side outer panel 4a and the roof side inner panel 4b are joined to each other. It is composed by.

As shown in FIG. 7, the frame 14 of the assembly jig 10 has a convex portion 14c as a positioning portion. The convex portion 14c is configured to be engageable with the Mohican portion 8 as an engaged portion provided on the work 2.

The mohawk portion 8 of the work 2 is a recess formed between the right end portion of the roof panel 3 and the right roof side panel 5. The frame 14 is assembled to the work 2 so that the convex portion 14c is inserted into the Mohican portion 8. Similar to the case of the frame 11, the frame 14 includes a seal member 19 that is interposed between the frame 14 and the covering surface 2 a of the work 2.

The roof side panel 5 of the work 2 has a roof side outer panel 5a and a roof side inner panel 5b, both of which are made of a metal material, and the roof side outer panel 5a and the roof side inner panel 5b are joined to each other. It is composed by.

As shown in FIG. 8, the frame 12 of the assembly jig 10 has a convex portion 12b as a positioning portion. The convex portion 12b is configured to be engageable with the gap 9 as the engaged portion provided on the work 2.

The gap 9 of the work 2 is formed between the rear end of the roof panel 3 and the back door 6. The frame 12 is assembled to the work 2 so that the convex portion 12 b is inserted into the gap 9. Similar to the case of the frame 11, the frame 12 includes a seal member 19 that is interposed between the frame 12 and the covering surface 2 a of the work 2.

The back door 6 of the work 2 has a thin plate-shaped back door outer panel 6a and a back door inner panel 6b, both of which are made of a metal material. By bonding the back door outer panel 6a and the back door inner panel 6b to each other, It is configured.

Next, the film sticking method of the first embodiment will be described with reference to FIGS. 9 to 20. This film sticking method is a work covering method in which the covering surface 2 a of the work 2 is covered with the film 30.

As shown in FIG. 9, this film sticking method can be performed by sequentially executing the processing from the first step S101 to the ninth step S109.

It should be noted that one or more steps may be added to these steps as necessary, or a plurality of steps may be integrated.

In three steps S101, S102, and S103 in FIG. 9, the assembling jig 10 is attached to the work 2 so as to surround the covering surface 2a, the decompression device 20 is attached to the assembling jig 10, and the film 30 is attached. This is a preparation step to set.

The first step S101 is a step of assembling the assembly jig 10 to the work 2 among the above-mentioned preparation steps.

In the first step of this first step S101, as shown in FIG. 10, the two frames 11 and 12 that constitute the assembly jig 10 are assembled to the work 2. At this time, the projecting portion 3c of the work 2 is inserted into the gap 11c of the frame 11 so as to be engaged and positioned with respect to the work 2 (see FIG. 5). Further, the convex portion 12b of the frame 12 is inserted into the gap 9 of the work 2 so as to be engaged and positioned with respect to the work 2 (see FIG. 8).

In the second step of the first step S101, as shown in FIG. 11, the remaining two frames 13 and 14 that form the assembly jig 10 are assembled to the work 2. At this time, while connecting the frame 13 to each of the two frames 11 and 12 (see FIGS. 3 and 4 ), the convex portion 13 c of the frame 13 is inserted into the mohican portion 7 of the workpiece 2 to be engaged with the workpiece. Positioning with respect to 2 (see FIGS. 6 and 12). Further, while the frame 14 is connected to each of the two frames 11 and 12 in the same manner as the frame 13, the convex portion 14c of the frame 14 is inserted into the mohican portion 8 of the work 2 so as to be engaged with the work 2. Positioning (see FIGS. 7 and 12).

According to the above-described first step S101, the assembly jig 10 is easily assembled to a desired position on the workpiece 2 by engaging the positioning portion of the assembly jig 10 with the engaged portion of the workpiece 2. be able to. At this time, all of the four frames 11, 12, 13, 14 are assembled in a state of being in contact with the covering surface 2 a of the work 2 via the seal member 19.

The second step S102 is a step of attaching the pressure reducing device 20 to the assembly jig 10 among the above-mentioned preparation steps. In the second step S102, as shown in FIG. 13, the one end portion 21a of the decompression pipe 21 of the decompression device 20 is connected to the through hole 10d of the assembly jig 10. As a result, the frame inner space 10 a of the assembly jig 10 communicates with the vacuum pump 22 via the pressure reducing pipe 21.

The third step S103 is a step of attaching the decompression device 20 to the assembly jig 10 among the above-mentioned preparation steps. In the third step S103, as shown in FIG. 14, the film 30 is set on the assembling jig 10 so as to cover the frame inner space 10a from above.

The film 30 is arranged such that the adhesive surface 30a, to which the adhesive is applied, is opposed to the covering surface 2a of the work 2, and the outer edge of the adhesive surface 30a is bonded to the assembly jig 10. As a result, it is set on the assembly jig 10. At this time, the film 30 may be adhered to the assembling jig 10 in a pre-cut state, or the film 30 unwound from the unwinding device (not shown) may be adhered to the assembling jig 10. It may be cut into a predetermined size in the state.

According to the third step S103, the state in which the frame inner space 10a of the assembly jig 10 is closed by the covering surface 2a of the work 2 from one opening surface 10b side and the film 30 from the other opening surface 10c side ( Hereinafter, a "sealed state of the frame inner space 10a") is formed.

In three steps S104, S105, and S106 in FIG. 9, the film 30 is covered with the covering surface 2a of the work 2 by decompressing the frame inner space 10a with the decompression device 20 in a closed state of the frame inner space 10a of the assembly jig 10. This is a coating step in which the film is adhered under reduced pressure. The term "pressure-reduced contact" as used herein refers to a mode in which the film 30 adheres to the covering surface 2a of the work 2 due to the reduced pressure in the space 10a in the frame.

The fourth step S104 is a step of starting the operation of the decompression device 20 attached to the assembly jig 10 among the above-mentioned covering steps. In this fourth step S104, as shown in FIG. 15, the vacuum pump 22 is activated to vacuum the space 10a in the frame of the assembly jig 10 to reduce the pressure.

According to the fourth step S104, as shown in FIG. 16, the volume of the inner space 10a is reduced due to the decompression, and the flexible film 30 has its adhesive surface 30a covering the work 2. It deforms so as to be attracted to the surface 2a. That is, the film 30 is urged in the direction in which the adhesive surface 30a comes into close contact with the covering surface 2a of the work 2. As a result, a part of the adhesive surface 30a of the film 30 is adhered to the covering surface 2a of the work 2.

At this time, the film 30 is sealed by a tensile load (the tensile load F acting on the frames 13 and 14 is shown in FIG. 16) that the film 30 pulls the assembling jig 10 inward when the space 10a in the frame is depressurized. When the member 19 is crushed, the degree of sealing of the frame inner space 10a is increased. The degree of tightness of the frame inner space 10a is visually confirmed by the vacuum pressure gauge 23.

The fifth step S105 is a step of heating the surface of the film 30 from the opposite side of the in-frame space 10a of the assembling jig 10 in the above covering step. In this fifth step S105, as shown in FIG. 17, in order to soften the film 30 so as to follow the covering surface 2a of the work 2 including the three-dimensional shape, the heat generated by the heating device 24 is applied to the surface of the film 30. Supply to the necessary parts of. As a result, the adhesion surface 30a of the film 30 adheres to the covering surface 2a of the work 2 in a reduced pressure close contact.

At this time, by heating the film 30 in the decompressed state of the space 10a in the frame, the film 30 can be easily softened so as to follow the covering surface 2a of the work 2 including the three-dimensional shape. Further, since it is not necessary to heat the entire film 30, the energy consumption of the heating device 24 required for heating can be suppressed to be low.

The sixth step S106 is a step of stopping the operation of the decompression device 20 in the covering step. In this sixth step S106, as shown in FIG. 18, the vacuum pump 22 is stopped.

The seventh step S107 is, as shown in FIG. 18, a cutting step in which the cutting jig C cuts the remaining portions 31 and 32 of the film 30 that have been reduced in pressure contact with the covering surface 2a of the work 2 in the covering step. .. According to the seventh step S107, the film 30 has a shape corresponding to the size of the covering surface 2a of the work 2.

The eighth step S108 is a step of removing the assembly jig 10 and the pressure reducing device 20 from the work 2, as shown in FIG. According to the eighth step S108, the engaged portion of the workpiece 2 (in FIG. 19, the mohawk portions 7 and 8 as the engaged portions are shown) and the positioning portion of the assembling jig 10 (see FIG. 19). Then, the projections 13c and 14c as the positioning portions are shown).

In the ninth step S109, as shown in FIG. 20, the edge portions 31a and 32a of the film 30 in which the surplus portions 31 and 32 are cut in the seventh step S107 are positioned, and the assembly jig 10 is positioned in the eighth step S108. It is a winding step of winding the engaged portion after the engagement with the portion is released. As a result, the coating of the coating surface 2a of the work 2 with the film 30 is completed.

According to this ninth step S109, the engaged portion of the work 2 that engages with the positioning portion of the assembling jig 10 is used as a place where the edge portions 31a and 32a of the film 30 are wound after the engagement is released. can do.

According to the first embodiment described above, the following operational effects can be obtained.

When the frame-shaped assembly jig 10 is assembled to the work 2 in the film sticking apparatus 1 described above, the covering surface 2 a of the work 2 is surrounded by the assembly jig 10. After that, the film 30 is set on the assembling jig 10, so that the in-frame space 10a of the assembling jig 10 is sealed. In this sealed state, the decompression device 20 decompresses the frame inner space 10a of the assembly jig 10 so that the film 30 adheres to the covering surface 2a of the work 2 under reduced pressure. As a result, only the desired covering surface 2a of each part of the work 2 is selectively covered with the film 30.

In this case, the space 10a in the frame of the assembling jig 10 is partitioned by using the covering surface 2a of the work 2 and the film 30, so that the size of the assembling jig 10 corresponds to the area of the covering surface 2a of the work 2. Any size is acceptable. Therefore, the size of the space 10a in the frame relating to decompression can be suppressed to a small size, and a large box that can enclose the entire work 2 or a large decompression device that can decompress the internal space of this box is not required. .. That is, if a small assembly jig 10 commensurate with the area of the covering surface 2a of the work 2 and a small decompression device 20 capable of decompressing the low-volume frame inner space 10a of the assembly jig 10 are prepared. Is enough. In addition, a large heating device that consumes a large amount of energy is not required to heat the wide range of the work 2.

Therefore, according to the first embodiment, the film sticking apparatus 1 for covering the work 2 with the film 30 can be downsized, and the initial investment required for the film sticking apparatus 1 can be reduced.

According to the film sticking apparatus 1 described above, the gap 11c, which is the positioning portion of the assembling jig 10, the protrusions 12b, 13c, and 14c, the protrusion 3c, which is the engaged portion of the work 2, and the mohawk parts 7 and 8. By engaging with the gap 9, the assembling jig 10 can be easily assembled at a desired position on the work 2.

According to the film sticking apparatus 1 described above, by separating the assembling jig 10 into the four frames 11, 12, 13, 14 when not in use, the assembling jig 10 becomes bulky during transportation and storage. Can be prevented.

According to the film sticking apparatus 1 described above, by heating the film 30 by the heating device 24 in the decompressed state of the space 10a in the frame, the film 30 can be easily made to follow the covering surface 2a of the work 2 including the three-dimensional shape. Can be softened.

According to the film sticking apparatus 1 described above, the assembling jig 10 comes into contact with the covering surface 2a of the work 2 via the seal member 19, so that the inside space of the frame 10a of the assembling jig 10 is decompressed. The sealing degree of 10a can be increased by the sealing member 19.

Hereinafter, another embodiment related to the above-described first embodiment will be described with reference to the drawings. In other embodiments, the same elements as those of the first embodiment are designated by the same reference numerals, and the description of the same elements will be omitted.

(Embodiment 2)
As shown in FIG. 21, the film sticking apparatus 101 of the second embodiment differs from that of the assembling jig 10 of the first embodiment only in the structure of the assembling jig 110. The assembly jig 110 has a frame shape like the assembly jig 10 and is configured as an integrally molded product made of a resin material.

The material of the assembling jig 110 is preferably a resin material in order to reduce the weight, but the material is not limited to the resin material, and for example, a metal material may be used instead of the resin material. ..

Other configurations are similar to those of the first embodiment.

According to the film sticking apparatus 101 of the second embodiment, the structure of the assembling jig 110 can be simplified.

In addition, the same operational effects as in the case of the first embodiment are achieved.

The present invention is not limited to the above-described embodiments, and various applications and modifications are conceivable without departing from the object of the present invention. For example, each of the following modes to which the above-described embodiment is applied can be implemented.

Although the assembling jigs 10 and 110 in which the plan view in the third direction Z has a substantially rectangular shape have been illustrated in the above-described embodiments, the shape of the assembling jigs 10 and 110 in the third direction Z in a plan view is substantially rectangular. The shape is not limited, and may be changed to, for example, a circle, an ellipse, a triangle, a polygon, or the like depending on the shape of the covering surface 2a of the work 2.

In the above-described embodiment, the case where the decompression device 20 is an external device to the assembling jigs 10 and 110 has been exemplified, but instead of this, the decompression device 20 or an element that performs the same function as the decompression device 20 is used. It is also possible to adopt a structure built in the assembling jig 10, 110.

In the above-described embodiment, the case where a seal member made of a flexible and porous material such as a sponge (foam material) is used as the seal member 19 of the assembling jigs 10 and 110 has been exemplified. Other types of sealing members can be used as long as they have them.

In the above-described embodiment, the case where the heating device 24 that heats the film 30 is used as an example, but when the coating surface 2a of the work 2 is a flat surface and heating of the film 30 is not required, the heating device 24 is used. It can be omitted.

In the above-described embodiment, the mode in which the adhesive is applied to the entire adhesive surface 30a of the film 30 has been illustrated, but instead of this, the adhesive surface 30a of the film 30 is bonded to the assembly jig 10, 110. The adhesive is applied only to the part, and the adhesive is applied to the coating surface 2a of the work 2, and the adhesive is applied to both the entire adhesive surface 30a of the film 30 and the coating surface 2a of the work 2. It is also possible to adopt the form.

In the above-described embodiment, the work 2 is a vehicle body of an automobile, and the roof panel, which is the exterior of the vehicle body, is covered with the film 30. However, the object to be coated is not limited to the roof panel of the vehicle body. Absent. For example, it is possible to cover vehicle bonnets, exteriors such as side doors and back doors, interiors such as instrument panels, and even interiors and exteriors of aircraft, interiors and exteriors of building materials, electronic components, electrical appliances, etc. it can.
Further, instead of the film 30, a sheet material such as a skin material may be used.

1,101 Film sticking device (work covering device)
2 Body (work)
2a Covering surface 3c Projecting part (engaged part)
7,8 Mohican part (engaged part)
9 Gap (engaged part)
10,110 Assembly jig 10a Frame space 10b One opening surface 10c Other opening surface 11,12,13,14 Frame 11c Gap (positioning part)
12b, 13c, 14c Convex part (positioning part)
19 sealing member 20 decompression device 24 heating device 30 film (sheet material)
31, 32 Excess part 31a, 32a Edge part S101-S109 Film sticking method (work covering method)
S101 First step (preparation step)
S102 Second step (preparation step)
S103 Third step (preparation step)
S104 Fourth step (covering step)
S105 Fifth step (covering step)
S106 Sixth step (covering step)
S107 7th step (cut step)
S109 9th step (involvement step)

Claims (10)

A work coating device for coating a work with a sheet material,
A frame-shaped assembly jig that is assembled to the work so as to surround the covering surface,
A decompression device attached to the assembly jig,
Equipped with
The frame inner space is decompressed by the decompression device in a state where the frame inner space of the assembling jig is closed from the one opening surface side by the covering surface of the work and is closed by the sheet material from the other opening surface side. Thus, the work coating apparatus is configured to bring the sheet material into close contact with the coating surface under reduced pressure. The work covering device according to claim 1, wherein the assembling jig has a positioning portion that can be engaged with an engaged portion provided on the work. The work covering device according to claim 1 or 2, wherein the assembling jig is composed of a plurality of frames that are separably connected to each other. The work covering device according to any one of claims 1 to 3, further comprising a heating device for heating the sheet material from a side opposite to the space in the frame. The work assembly apparatus according to any one of claims 1 to 4, wherein the assembly jig includes a seal member that is interposed between the assembly jig and the coating surface of the work. The seal member is made of a flexible and porous material, and the degree of sealing of the space inside the frame by crushing the seal member by a tensile load for pulling the assembly jig by the sheet material during depressurization of the space inside the frame. The workpiece coating apparatus according to claim 5, which is configured to be elevated. A method for covering a work with a sheet material, comprising:
A preparatory step of assembling the frame-shaped assembling jig so as to surround the covering surface on the work, attaching a pressure reducing device to the assembling jig, and setting the sheet material,
The frame inner space is decompressed by the decompression device in a state where the frame inner space of the assembling jig is closed from the one opening surface side by the covering surface of the work and is closed by the sheet material from the other opening surface side. By a coating step in which the sheet material is adhered to the coating surface under reduced pressure,
A method for coating a work having: 8. The assembly step according to claim 7, wherein, in the preparing step, the engaged portion provided on the work is engaged with a positioning portion provided on the assembly jig to assemble the assembly jig on the workpiece. Work coating method. A cutting step of cutting the remaining portion of the sheet material that is in vacuum contact with the coating surface by the coating step,
Winding the edge portion of the sheet material, the excess portion of which is cut in the cutting step, into the engaged portion of the work after the engagement with the positioning portion of the assembly jig is released. Included steps,
The work covering method according to claim 8, further comprising: The work covering method according to any one of claims 7 to 9, wherein in the covering step, the sheet material is heated from a side opposite to the inner space of the frame to be softened so as to follow the covering surface of the work.

Images