JP2001252981A - Method for press bonding decorative sheet on interior finishing trim and press-bonding mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance productivity by surely press injecting a decorative sheet in a wood graining groove part in a method for press bonding the decorative sheet for wood graining a decorative sheet end by press bonding the sheet on an interior finishing trim and a press bonding mold. SOLUTION: The press bonding mold comprises a press bonding upper mold 40 for setting a trim body 12, a press bonding lower mold 50 for setting the decorative sheet 20, a wood graining bar 60 provided in the mold 50 to press inject an end 20a of the sheet 20 in the wood graining groove part 14, and a sealing material 70 provided along the bar so that an end tapered part 71 is disposed at an upper end of the bar 60. When the bar 60 is raised, the part 71 of the material 70 is press injected in the groove part 14 together with the bar 60. In this case, at a shoulder part A of an opening edge of the groove part 14, the sheet 30 can be rigidly fixedly press bonded to a door trim body 12. A release of a peripheral edge end 20a of the sheet 20 is eliminated, and surely press injected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for crimping a decorative sheet in an interior trim and a mold for crimping. The present invention relates to a method for crimping a decorative sheet and a mold for crimping which can be beautifully press-fitted into the inside.

[0002]

2. Description of the Related Art Normally, various interior parts are provided in a vehicle interior. FIG. 9 shows a vehicle door trim 1 mounted on a vehicle door panel. The vehicle door trim 1 has a desired curved surface shape. A decorative sheet 3 such as a cloth is provided on a predetermined portion (intermediate portion) of the surface of the door trim body 2
Are crimped and integrated, and the peripheral edge 3a of the decorative sheet 3
Are press-fitted into the wood grain groove 2a of the door trim body 2.

The door trim body 2 and the decorative sheet 3
Is performed using a crimping die 4 shown in FIG. That is, the crimping die 4 includes a vertically movable crimping upper die 5 for setting the trim body 2 and a lower crimping die 6 for setting the decorative sheet 3.

First, the decorative sheet 3 is placed on the upper surface of the crimping lower mold 6.
At this time, on the back of the decorative sheet 3,
An adhesive or a pressure-sensitive adhesive is applied. The crimping lower die 6 is provided with a set guide 6a for setting the decorative sheet 3 at an appropriate position, and a wood grain bar 7 is connected to the cylinder 7a along the inside of the set guide 6a, so that the wood grain is formed. The bar 7 can move up and down by a predetermined stroke.

[0005] Next, as shown in FIG. 11, the upper crimping die 5 in which the door trim main body 2 is set is lowered to the bottom dead center, and the upper and lower crimping dies 5, 6 are clamped on the surface of the door trim main body 2. The decorative sheet 3 is pressure-bonded and integrated via an adhesive (adhesive). Furthermore, after clamping the upper and lower dies 5 and 6 for crimping, the wood grain bar 7 is raised by a predetermined stroke by driving the cylinder 7a, and the terminal 3a of the decorative sheet 3 is pressed into the wood grain groove 2a of the door trim body 2. Perform terminal processing.

[0006]

However, in the conventional method of crimping the decorative sheet 3, the door trim body 2
The shape and depth dimension of the wood grain groove 2a formed in the shape of the wood grain are subject to many restrictions in terms of problems in die cutting, mold strength, and the like. In particular, the shoulder of the opening edge of the wood grain groove 2a (A in FIG. 11) (Part indicated by) is set to have a corner R shape, so that pressure is not easily applied to the shoulder portion A, the terminal of the decorative sheet 3 is easily peeled off, and there is a problem that the appearance is significantly reduced. In particular, when the thickness of the decorative sheet 3 is a thin specification, the decorative sheet 3 tends to peel off frequently. Therefore, it has been pointed out that a large number of man-hours are required for a reworking operation or the like, which leads to a decrease in productivity.

Further, when a protrusion indicated by reference numeral B in FIG. 12 is set as the mold shape of the lower die 6 for crimping so that pressure is applied to the shoulder A of the groove portion 2a for wood graining of the door trim main body 2, The mold strength of the protruding portion B decreases, which causes the durability of the lower mold 6 for crimping to decrease.

The present invention has been made in view of such circumstances, and a method of crimping a decorative sheet in an interior trim typified by a decorative sheet crimped on a center part of a door trim and a mold for crimping the mold. By securely performing the terminal treatment of the decorative sheet (press-fitting into the groove for wood grain) without lowering the strength of the sheet, it is possible to improve the appearance and to eliminate the need for rework, thereby increasing the productivity. An object of the present invention is to provide a method for crimping a decorative sheet in an interior trim and a mold for crimping.

[0009]

In order to achieve the above object, the present invention provides an upper crimping die in which a trim main body is set,
The decorative sheet is crimped to a predetermined location on the surface of the trim body by clamping the crimping lower mold on which the decorative sheet is set, and the wood grain bar provided on the crimping lower mold is raised to operate the trim body. A method of crimping a decorative sheet in an interior trim in which a terminal of a decorative sheet is press-fitted into a groove for wood graining, and the bar for wood grain rising after crimping of the trim body and the decorative sheet by clamping of the upper and lower molds for crimping. At this time, the sealing material provided at a position that interferes with the upper end of the wood grain bar partially penetrates into the wood grain groove of the trim main body, and the terminal of the decorative sheet is attached to the inner wall surface of the wood grain groove and the shoulder of the opening edge. It is characterized by pressing along the part.

The crimping die used in the present invention includes a vertically movable crimping upper die for setting a trim main body, and a crimping lower die for setting a decorative sheet with its joining surface facing upward.
A vertically movable wood grain bar provided near the set guide of the crimping lower mold for press-fitting the terminal of the decorative sheet into the wood grain groove of the trim body, and the wood graining bar is inserted through the upper surface of the crimping lower mold. The sealing material is provided so that the tip taper part faces the upper surface opening of the hole.Following the rising operation of the graining bar, the tip taper part of the sealing material is elastically deformed and becomes inside the graining groove. It is characterized by intrusion.

Here, the interior trim can be applied to a door trim, a luggage side trim of a wagon car, or the like. The trim main body is an injection-molded body or a molded press-molded body of a synthetic resin. Fabric sheets are suitable.

The decorative sheet may use an adhesive as an adhesive medium for the trim body, or may be coated with a solvent type adhesive. When an adhesive is used, a release paper is adhered, and the release paper is peeled off before the pressure bonding to expose the adhesive surface.

Further, the crimping die is composed of a fixed side crimping lower die and a movable side crimping upper die, the decorative sheet is set on the crimping lower die, and the trim body is the crimping upper side. Set to type.

The lifting die is connected to the crimping upper die so as to be able to move up and down a predetermined stroke. On the other hand, the lower mold for crimping is provided with a set guide for setting the decorative sheet at an appropriate position, and a bar for graining that performs graining processing is connected to the cylinder and attached to be vertically movable. Furthermore, a sealing material is provided over the tip of the wood grain bar so as to be able to press the decorative sheet against the shoulder of the opening edge of the wood grain groove, and to bend and deform following the vertical movement of the wood grain bar.

The sealing material is provided in the vicinity of the insertion hole of the wood grain bar in the lower die for crimping, and is housed in the recess of the lower die so that the upper surface of the sealing material can form the die surface of the lower die for crimping. It is good to install.

The sealing material is an elastically deformable material such as silicone rubber. In particular, the sealing material follows the operation of the wood grain bar so that the sealing material can easily enter the wood grain groove. The tip is preferably tapered.

Therefore, according to the present invention, the decorative sheet is crimped and fixed to the trim main body by clamping the upper and lower molds for crimping, and then the wood grain bar provided on the lower mold for crimping is raised.
When the edge of the decorative sheet is grained in the grained groove of the trim body, the sealing material is provided so as to cover the tip of the grained bar. Therefore, the tapered tip of the sealing material is formed with the grained bar together with the grained bar. The terminal part of the decorative sheet can be firmly pressed against the side wall of the wood grain groove of the trim main body and the shoulder of the opening edge by invading the inside of the interior of the trim sheet, thereby preventing defects such as peeling of the terminal part of the decorative sheet as much as possible. it can.

By providing the sealing material, it is not necessary to set the shape of the lower die for crimping to a tapered shape, so that the die strength of the lower die for crimping does not decrease.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a method for crimping a decorative sheet and a mold for crimping in an interior trim according to the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 1 and 2 are a front view and a sectional view, respectively, showing an automobile door trim manufactured by applying the method of the present invention.
Is an explanatory view showing a schematic configuration of a crimping die according to the present invention, and FIG. 4 is an enlarged view showing a main part of the crimping die.

FIGS. 5 to 7 show the method of the present invention applied to a method of crimping a decorative sheet to a door trim.
FIG. 5 is an explanatory view showing a setting step, FIG. 6 is an explanatory view showing a pressure bonding step, and FIG. 7 is an explanatory view showing a wood graining processing step.
FIG. 8 is a cross-sectional view of a main part showing another embodiment of the crimping die according to the present invention.

1 and 2, the structure of an automobile door trim 10 manufactured by applying the method of the present invention will be described.
1 and a decorative sheet 20 attached to the middle part thereof.

More specifically, the door trim main body 11 is composed of a door trim upper 12 and a door trim lower 13.
The door trim upper 12 is provided with a wood grain groove 14 for graining the peripheral portion of the decorative sheet 20, and the door trim lower 13 is provided with a door pocket 15 and a speaker grill 16. As shown in FIG. 2, the door trim upper 12 and the door trim lower 13 are formed with an ultrasonic boss 13 a protrudingly formed on the back surface of the door trim lower 13, and a mounting hole 12 a formed in the door trim upper 12.
After being inserted into the inside, the tip of the ultrasonic boss 13a is caulked by ultrasonic welding, so that the door trim upper 12 and the door trim lower 13 are firmly joined.

The door trim upper 12 and the door trim lower 13 are formed into a desired curved shape by subjecting PP (polypropylene) resin mixed with talc to press molding, and the decorative sheet 20 is made of velvet, moquette, or the like. A cross sheet is used, and the decorative sheet 20 is actually pressure-bonded to the surface of the door trim upper 12, but is fixed to the door trim main body 11 by pressure bonding via an adhesive layer 21 coated on the back surface of the decorative sheet 20. ing.

Next, the structure of the crimping die 30 according to the present invention will be described with reference to FIGS. 3 and 4. As shown in FIG. 3, the crimping die 30 includes a door trim main body 11 (actually, a door trim upper). 12) is roughly composed of a crimping upper mold 40 for setting the decorative sheet 20 and a crimping lower mold 50 for setting the decorative sheet 20. The crimping upper mold 40 is capable of moving up and down by a predetermined stroke. 41. On the other hand, the lower mold 50 for crimping is
A set guide 51 is provided on the terminal side so that 0 can be set at an appropriate position, and corresponds to the wood-groove groove 14 of the door trim main body 11 (door trim upper 12).
The crimping lower mold 50 is provided with a grained bar 60. The graining bar 60 is connected to a cylinder 61 and can move up and down a predetermined stroke.

Further, the crimping die 30 according to the present invention can be elastically deformed using silicone rubber along the upper surface opening 52a of the insertion hole 52 of the crimping lower die 50 through which the wood grain bar 60 is inserted. The seal member 70 is attached so as to face the upper surface opening 52a of the insertion hole 52, and the seal member 70 has a tapered end portion 71 along the distal end edge so that the distal end is easily bent and deformed. .

Then, the sealing material 70 is attached to the lower mold 5 for crimping.
As shown in FIG.
The crimping lower mold 50 is provided with an accommodating recess 53 that can accommodate the sealing material 70 along the inside of the insertion hole 52. In a state where the sealing material 70 is set in the accommodating recess 53, the crimping lower mold 50 is provided. The depth of the accommodation recess 53 is adjusted so that the mold surface of the sealing member 70 and the upper surface of the sealing material 70 are flush with each other, and the screw 73 inserted into the mounting hole 72 provided in the sealing material 70 is It is attached by tightening and fixing in the mounting hole 54, and the sealing material 70 is removed by removing the screw 73.
Can be easily replaced and maintenance can be performed easily.

Next, the step of crimping and fixing the decorative sheet 20 to the door trim main body 11 using the crimping mold 30 will be described. First, as shown in FIG. The door trim upper 13 is set, and the decorative sheet 20 is set at an appropriate position on the upper surface of the crimping lower die 50 by using the set guide 51. At this time, the sealing material 70 is attached to the tip 60a of the wood grain bar 60.
, And the upper surface of the sealing material 70 is a flat surface, which does not hinder the setting work of the decorative sheet 20.

Next, when the setting of the door trim upper 13 and the decorative sheet 20 on the crimping upper and lower dies 40 and 50 is completed, as shown in FIG. The decorative sheet 20 descends, and the upper and lower press molds 40 and 50 are clamped.
Is integrated through pressure bonding.

Thereafter, as shown in FIG. 7, the wood grain bar 60 is raised by a predetermined stroke by driving the cylinder 61. Then, at this time, the tip taper portion 71 of the sealing material 70 is moved by the grained bar 60 to the door trim upper 1.
2, the decorative sheet 20 can be provided with a strong crimping force even at the shoulder (shown by A in FIG. 7) of the opening edge of the wood grain groove 14. Since the terminal 20a of the decorative sheet 20 can be securely and firmly adhered and fixed in the groove 14 for wood grain, defects such as peeling of the terminal of the decorative sheet 20 can be greatly reduced, so that a good external appearance can be expected and reworking can be performed. Eliminating work can increase productivity.

The crimping mold 30 according to the present invention
The distal end taper 71 of the sealing material 70 is opened at the top surface of the insertion hole 52 of the graining bar 60 so that the elastically deformed portion (the tip tapered portion 71 in this embodiment) of the sealing material 70 follows the operation of the graining bar 60. The crimping lower die 60 does not need to be formed in a tapered shape, so that the die strength of the crimping lower die 50 does not decrease.

Although silicone rubber is used as the sealing material 70, general-purpose rubber bodies such as neoprene rubber and isoprene rubber and elastic bodies such as synthetic resin foams such as polyurethane foam can be used. Silicone rubber is suitable because it has a releasing property and an adhesive or the like does not adhere.

Further, as shown in FIG.
May be provided over the entire surface of the upper surface of the crimping lower die 50 on which the decorative sheet 20 is to be installed. In this case, the elastically deformable tip taper portion 71 is provided for the portion facing the wood grain bar 60. Is provided.

When the sealing material 70 is provided on the entire upper surface of the lower mold 50 for crimping, the sealing material 70 communicates with the vacuum suction hole 55 protruding from the lower mold 50 for crimping for holding the decorative sheet 20, for example. In addition, the vacuum suction holes 7
4 needs to be established.

In the embodiment described above, the decorative sheet 20 for the door trim main body 11 of the vehicle door trim 10 is used.
The present invention can also be applied to a method of crimping a decorative sheet made of cloth, nonwoven fabric, or the like to a trim body in a luggage side trim of a wagon or the like, and the present invention. Is not limited to the embodiment described above.

[0036]

As described above, the method for crimping the decorative sheet in the interior trim according to the present invention and the mold for crimping are provided in the vicinity of the graining bar for graining the terminal of the decorative sheet in the graining groove of the trim body. Sealing material is provided on the part, and the tapered tip of the sealing material penetrates into the groove for wood grain when the bar for wood grain rises. Can be firmly pressed against the trim body side, preventing peeling failure of the decorative sheet terminal part as much as possible, maintaining good appearance, and significantly improving productivity by eliminating reworking work. In addition to this, it is not necessary to set a tapered part in the molding of the lower die for crimping, and the die strength of the lower die for crimping is not reduced.

Therefore, regardless of whether the decorative sheet is thick or thin, the terminal portion of the decorative sheet can be securely and beautifully press-fitted into the wood-groove groove, thereby improving the productivity and improving the peripheral portion of the decorative sheet. It has the effect that the appearance can be maintained beautifully.

[Brief description of the drawings]

FIG. 1 is a front view showing an automobile door trim manufactured using the method of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an explanatory view showing a schematic configuration of a crimping die according to the present invention.

FIG. 4 is an enlarged view showing a sealing material installation location in the crimping die shown in FIG.

FIG. 5 is an explanatory view showing a trim main body and a setting step of the decorative sheet in the decorative sheet crimping method according to the present invention.

FIG. 6 is an explanatory view showing a decorative sheet pressing step in the decorative sheet pressing method according to the present invention.

FIG. 7 is an explanatory view showing a wood graining processing step of a decorative sheet terminal portion in the decorative sheet crimping method according to the present invention.

FIG. 8 is a partial cross-sectional view showing a schematic configuration of another embodiment of the crimping die according to the present invention.

FIG. 9 is a front view showing a conventional automobile door trim.

FIG. 10 is an explanatory view showing a pressure bonding step of a decorative sheet in a conventional automobile door trim.

FIG. 11 is an explanatory diagram showing a wood graining process in a conventional decorative sheet.

FIG. 12 is an explanatory view showing a configuration of a conventional lower die for crimping.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Door trim for car 11 Door trim main body 12 Door trim upper 13 Door trim lower 14 Wood grain groove 15 Door pocket 16 Speaker grill 20 Decorative sheet 20a Terminal 21 Adhesive layer 30 Crimping mold 40 Crimping upper mold 41 Elevating cylinder 50 Crimping lower Mold 51 Set guide 52 Insertion hole 53 Storage recess 60 Wood grain bar 61 Cylinder 70 Sealing material 71 Tip taper 72 Mounting hole

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3D023 BB08 BD03 BE03 BE14 BE16 BE26 4F211 AA33 AA45 AD08 AD24 AG01 AG03 AG28 AH23 AJ05 TA03 TA08 TA13 TA14 TC02 TC22 TD11 TJ14 TJ22 TN87 TQ04 TQ06 TQ07 TQ13

Claims (3)

[Claims] 1. A trim body (11) by clamping a crimping upper mold (40) on which a trim body (11) is set and a crimping lower mold (50) on which a decorative sheet (20) is set. The decorative sheet (20) is crimped to a predetermined portion of the surface of the crimping machine, and the wood grain bar (6) provided on the crimping lower mold (50) is pressed.
0), the trim body (11) is raised.
A method of crimping a decorative sheet in an interior trim for press-fitting a terminal (20a) of a decorative sheet (20) into a wood grain groove (14), the trim body being formed by clamping a crimping upper and lower mold (40, 50). After the crimping and integration of (11) and the decorative sheet (20), when the grained bar (60) rises, the grained bar (60)
A seal member (70) provided at a position that interferes with the upper end of the trim sheet partially penetrates into the wood grain groove (14) of the trim body (11), and the terminal (20a) of the decorative sheet (20) is moved to the trim body (11). A) A method for crimping a decorative sheet in an interior trim, wherein the pressing is performed along the inner wall surface of the wood grain groove (14) and the shoulder (A) of the opening edge. 2. A crimping upper mold (40) for setting a trim main body (11), which can be moved up and down, a crimping lower mold (50) for setting a decorative sheet (20) with its joining surface facing upward, and a trim. A vertically movable wood grain provided near the set guide (51) of the crimping lower die (50) for press-fitting the terminal (20a) of the decorative sheet (20) into the wood grain groove (14) of the main body (11). The taper portion (7) is formed on the upper surface opening (52a) of the insertion hole (52) of the wood graining bar (60) on the upper surface of the lower bar (60) and the lower die (50) for crimping.
1) is provided so as to face, and the tapered end portion (71) of the sealing material (70) is elastically deformed following the rising operation of the wood grain bar (60). A mold for crimping a decorative sheet in an interior trim, wherein the metal mold intrudes into a groove (14) for wood grain. 3. An upper mold (40) for crimping the sealing material (70) over the entire installation area of the decorative sheet (20).
The mold for crimping a decorative sheet in an interior trim according to claim 2, wherein the mold is provided on an upper surface of the interior trim.