JP2503494Y2 - Crimping device for decorative sheets in automobile interior parts - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crimping device for a decorative sheet in an automobile interior part such as an automobile door trim.

[0002]

2. Description of the Related Art Recently, in order to improve the comfortability of the interior of a vehicle, the materials of automobile interior parts such as automobile door trims are upgraded, or decorative sheets such as cloths are attached at appropriate places on the surface of the door trims. The method is being tried.

FIG. 10 shows an outline of the structure of an automobile door trim. In the drawing, an automobile door trim 1 is shown.
Is a door trim main body 4 formed by adhering and integrating a skin material 3 on the surface of a core material 2 formed into a required shape, and is attached to the surface of the door trim main body 4 in order to further add decoration to appropriate portions. It is composed of a decorative sheet 5 such as a cloth.

As shown in FIG. 11, the door trim main body 4 is mounted on the door trim main body 4 by setting the door trim main body 4 on the upper crimping die 6 and the original lower crimping die 7 as shown in FIG. Clamp device 8 for decorative sheet 5 in the state
Positioning is performed with the peripheral edge held by.

Then, the crimping upper die is lowered, the decorative sheet 5 is crimped to the door trim body 4 by the crimping upper and lower dies 6 and 7, and the hot blade 7a installed around the crimping lower die 7 is used. Of the decorative sheet 5 is trimmed, the hot blade 7a is lowered, and then the grain bar 7b is raised to cut the decorative sheet 5 into the grain groove 4a formed in the door trim body 4. It is to insert the terminal into the wood.

Further, as another conventional example of the crimping method of the decorative sheet 5 to the door trim body 4, as shown in FIG. 12, the door trim body 4 is set in the crimping upper die 6 in the same manner as the above-mentioned conventional example. However, the decorative sheet 5 pre-cut into a required shape is set in the lower die 7 for pressure bonding.

At this time, the decorative sheet 5 is positioned at an appropriate position by the guide member 7c installed around the lower die 7 for pressure bonding.

After the upper crimping die 6 is lowered and the upper and lower crimping dies 6, 7 are crimped between the door trim body 4 and the decorative sheet 5, the upper and lower crimping dies 6, 7 are further lowered. Then, the grain-filling bar 7b relatively rises, and the end of the decorative sheet 5 is inserted into the grain-filling groove 4a of the door trim body 4 to perform the grain-filling operation. The guide member 7c performs the descending operation in association with the descending of the upper crimping die 6.

[0009]

As described above, in the conventional method of crimping the decorative sheet 5 to the door trim body 4, for example, in the case of the hot blade method shown in FIG.
Since the trimming is performed by the hot blade 7a while the peripheral portion of the decorative sheet 5 is held by the clamp device 8, the decorative sheet 5 must be blanked to a large size including the clamp allowance, and a large amount of end material is generated. However, there is a drawback in that the cost is increased due to the material loss. Further, depending on the shape of the door trim main body 4, the hot blade 7a may damage the skin material 3, and there is also a drawback that the door trim is restricted in its shaping.

Further, according to the precut method of the decorative sheet 5 shown in FIG. 12, although the material loss is eliminated, the crimping point of the decorative sheet 5 can be applied only on a substantially flat surface,
In the case of a curved surface shape, wrinkles and positional deviations occur, which has a drawback that the degree of freedom in molding is greatly restricted.

The present invention has been made in view of the above circumstances, and the present invention utilizes the advantages of both the hot blade method and the precut method to reduce the material loss of the decorative sheet, reduce the product cost, and trim. It is an object of the present invention to provide a decorative sheet crimping device for an automobile interior part, which enables the decorative sheet to be crimped even on a curved surface portion of the main body so as to increase the degree of freedom in shaping.

[0012]

In order to achieve the above object, the present invention has a groove for wood graining in which a decorative sheet is crimped to a predetermined position on the front surface of the trim body and the peripheral edge of the decorative sheet is provided in the trim body. In a crimping device for a decorative sheet in an automobile interior part, which is press-fitted into the crimping device, the crimping device engages the upper and lower crimping upper molds for setting the trim main body and the crimping upper mold, and the decorative sheet Crimping lower mold to be crimped to, a wood graining bar installed around the above crimping lower mold, guide members installed on two opposite sides around the lower mold, and the remaining surroundings of the lower mold facing each other. It is characterized by comprising a hot blade installed on two sides and a clamp device.

[0013]

As is apparent from the above construction, two of the four peripheral sides of the decorative sheet facing each other are pre-cut and the remaining two sides are precut.
Since the edges are cut with the hot blade while applying tension by the clamp device, no scraps are formed on two of the four surrounding edges of the decorative sheet, and material loss is small.

Further, since two of the four sides of the decorative sheet are held by the clamp device and are pressed against each other with the tension, even if the trim body has a complicated surface shape, no wrinkles are generated and it is good. Can be crimped to.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a crimping device for a decorative sheet in an automobile interior part according to the present invention will be described in detail below with reference to the accompanying drawings.

1 to 3 show a crimping device according to the present invention applied to crimping a decorative sheet in an automobile door trim. FIG. 1 is a front view showing the automobile door trim, and FIGS. 2 to 3 are the automobile door trims. 3 is a cross-sectional view showing the configuration of FIG.

Next, FIGS. 4 to 5 show an embodiment of a crimping device according to the present invention. FIG. 4 is a sectional view showing the construction of the crimping device, and FIG. 6 and 9 are explanatory views showing a process of crimping the trim sheet to the trim body using the crimping device according to the present invention.

1 to 3, an automobile door trim 10 includes an upper member 20 and a lower member 30.
It is configured by joining and fixing the divided body of
The upper member 20 is composed of a trim body 21 and a decorative sheet 22 attached to the center of the surface of the trim body 21, and the trim body 21 is formed by press molding,
It is composed of a core material 23 that is molded into a required shape by mold press molding or injection molding, and a skin material 24 that is integrally attached to the surface of the core material 23 by vacuum molding or the like.
The core material 23 is a composite resin material in which a filler such as wood powder or talc is mixed in polypropylene resin, and the skin material 24 is a foamed PVC sheet, or a laminated layer of a foamed layer such as polyethylene foam on the back surface of the PVC sheet. It is suitable.

The trim sheet 21 is attached to the decorative sheet 20.
A cloth different in texture and color from the skin material 24 is used.

The trim body 21 has a decorative sheet 22.
A groove portion 25 for graining is provided along the peripheral edge end of the edge portion 22a of the decorative sheet 22 is press-fitted into the groove portion 25 for graining so that the decorative sheet 22 is subjected to terminal treatment.

By the way, the feature of the present invention is that the decorative sheet 2 is used.
There is a crimping device for crimping 2 to the trim body 21,
The shaping shape of the decorative sheet 22 to which this crimping device is applied is
It is almost flat along the up-down direction and has a complicated curved shape with many undulations along the left-right direction.

Next, the structure of the crimping device according to the present invention will be described with reference to FIGS.

The crimping device of the present invention comprises a crimping lower mold 40 for setting the decorative sheet 22 and a crimping upper mold 50 for setting the trim body 21 located above the crimping lower mold 40.
As shown in FIG. 5, the crimping lower die 40 is mounted on the lower table 41, and the end portion of the decorative sheet 22 is provided around the crimping lower die 40 for the grain of the trim body 21. A wood-incorporating bar 42, which is press-fitted into the groove portion 25, is provided around.

In the case of this embodiment, the decorative sheet 2
Since the upper edge and the left and right side edges of the four peripheral sides of 2 are subjected to the grain processing, and the lower edge portion is not subjected to the grain processing, the grain-incorporating bar 42 is installed on the three peripheral sides.

Further, a guide member 43 is provided on two opposing sides of the four sides around the lower crimping die 40, and along this guide member 43, the pre-cut side edge portion of the decorative sheet 22. Is positioned.

On the other hand, the remaining two sides are provided with a thermal blade 44 and a clamp device 45 on the outside thereof.

Next, each step of manufacturing the upper member 22 by crimping the decorative sheet 22 to the trim body 21 will be described with reference to FIGS.

First, as shown in FIG. 6, a crimping upper die 50.
The trim main body 21 is set on the mold surface and the decorative sheet 22 in which only two opposing sides of the four sides of the periphery are pre-cut is positioned on the lower crimping die 40. The remaining two sides of the decorative sheet 22 are held by the clamp device 45.

Then, as shown in FIG. 7, a crimping upper die 50 is formed.
And the decorative sheet 22 is pressure-bonded to the trim body 21 by the engaging action of the pressure bonding upper and lower molds 40 and 50.

At the same time when the pressure is applied, the guide member 43
Descends.

At this time, the guide members 43 along the two pre-cut sides of the four sides of the decorative sheet 22 do not descend, and the crimping process between the trim body 21 and the decorative sheet 22 is not hindered. Since the remaining side is held by the clamp device 45 and an appropriate tension is applied, the decorative sheet 22 can be crimped beautifully without following wrinkles on the curved surface of the trim body 21.

Thereafter, as shown in FIG. 8, the hot blade 44 is raised to perform trim cut processing on the left and right ends of the decorative sheet 22, and the hot blade 44 is lowered after trim cut processing.

Finally, as shown in FIG. 9, the wood graining bar 42 is moved up, and the upper and lower edge portions of the decorative sheet 22 and the left and right side edges trim-cut by the heat blade 44 are placed in the wood graining groove portion 25. Press-fit to perform grain processing.

As described above, since the crimping device according to the present invention uses the hot blade method and the precut method in combination, the scrap material of the decorative sheet 22 is reduced to reduce material loss and the decorative sheet 22 is crimped. Even if the trim main body 21 has a complicated surface shape, it is possible to perform crimping that is aesthetically pleasing and does not cause wrinkles.

[0035]

As described above, the pressure-bonding device for a decorative sheet in an automobile interior part according to the present invention has the following special effects.

(1) Since the crimping device according to the present invention uses both the pre-cut method and the hot blade method, the hot-blade method in which the trim sheet is trimmed by holding the entire circumference of the decorative sheet by clamping In comparison, two of the four sides of the decorative sheet are pre-cut, so no cutting and clamping costs are set, resulting in less material loss, leading to cost reductions associated with material cost reduction. Has the effect of

(2) Since the crimping device according to the present invention uses both the hot blade method and the pre-cut method, it is possible to apply the pre-cut method, which was conventionally applicable only to the smooth surface, to the curved surface portion. Therefore, it has the effect of dramatically increasing the degree of freedom in shaping the product.

[Brief description of drawings]

FIG. 1 is a front view showing an automobile door trim manufactured by using a crimping device according to the present invention.

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

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is a sectional view showing an embodiment of a crimping device according to the present invention.

5 is a perspective view showing a configuration of a lower die for crimping in the crimping device shown in FIG.

FIG. 6 is a cross-sectional view showing a step of setting a raw material, which is one step of the method for pressure-bonding a decorative sheet.

FIG. 7 is a cross-sectional view showing a step of crimping a decorative sheet, which is one step of the method of crimping a decorative sheet.

FIG. 8 is a cross-sectional view showing a trim cutting step of the decorative sheet, which is one step of the method for crimping the decorative sheet.

FIG. 9 is a cross-sectional view showing a step of graining a decorative sheet, which is one step of the method for pressure-bonding a decorative sheet.

FIG. 10 is a sectional view showing the structure of a conventional automobile door trim.

FIG. 11 is a cross-sectional view showing a conventional example of a pressure bonding method for a decorative sheet.

FIG. 12 is a cross-sectional view showing a conventional example of a pressure bonding method for a decorative sheet.

[Explanation of symbols]

 10 Automotive Door Trim 20 Upper Member 21 Trim Body 22 Decorative Sheet 25 Groove Groove 30 Lower Member 40 Crimping Lower Mold 42 Wood Grading Bar 43 Guide Member 44 Hot Blade 45 Clamping Device 50 Crimping Upper Mold

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B29L 31:58 B29L 31:58

Claims (1)

(57) [Scope of utility model registration request] 1. A decorative sheet (22) is pressure-bonded to a predetermined position on the front surface side of a trim body (21), and a decorative sheet (2) is also attached.
(2) A crimping device for a decorative sheet in an automobile interior part in which a peripheral end of (2) is press-fitted into a groove part (25) for wood grain provided in a trim main body (21). A possible crimping upper die (50), a crimping lower die (40) for engaging the crimping upper die (50) and crimping the decorative sheet (22) to the trim body (21), and the above crimping Lower mold (40)
Bar (42) installed around the lower mold (40), guide members (43) installed on the two opposite sides around the lower mold (40), and two remaining opposite sides around the lower mold (40) 1. A crimping device for a decorative sheet in an automobile interior part, comprising: a hot blade (44) installed on the above and a clamp device (45).