JP2833638B2 - Crimping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crimping apparatus for use in the production of interior parts for automobiles such as door trims for automobiles, and more particularly, to a crimping apparatus for crimping a decorative sheet to a predetermined surface of a trim body. It relates to a crimping device.

[0002]

2. Description of the Related Art In recent years, in order to enhance the livability in a vehicle interior, a method of upgrading the material of interior parts such as an automobile door trim or mounting a decorative sheet such as a cloth on a predetermined portion of a surface of a door trim main body is used. Have been tried.

FIG. 7 shows an outline of the construction of a door trim for an automobile. A door trim 1 for an automobile is a door trim formed by sticking and integrating a skin material 3 on a surface of a core material 2 formed into a required shape. The door trim body 4 includes a main body 4 and a decorative sheet 5 attached to a predetermined portion of the surface of the door trim main body 4 in order to further provide decorativeness.

[0004] As a material of the decorative sheet 5, a synthetic leather, cloth, or the like having excellent surface appearance and surface feel is used. As a terminal treatment structure of the decorative sheet 5, a groove 4a for wood graining is formed in the door trim main body 4. The decorative sheet 5 is subjected to a terminal treatment by press-fitting a peripheral edge 5a of the decorative sheet 5 into the wood grain groove 4a.

[0005] As shown in FIG. 8, the decorative sheet 5 is mounted by setting the door trim main body 4 on the mold surface of the upper crimping die 6 and by attaching the decorative sheet on the mold surface of the lower crimping die 7. 5 is set with its front side facing down.

The outer periphery of the crimping lower mold 7 is provided with a wood grain bar 7a for press-fitting the terminal 5a of the decorative sheet 5 into the wood grain groove 4a, and the precut decorative sheet 5 is provided with the crimping lower mold 7a. A guide member 7b is positioned at a predetermined position.

When the decorative sheet 5 is positioned at a predetermined position along the guide member 7b, a set pin 8 is set on the periphery of the lower die 7 for crimping so as to hold the decorative sheet 5 at that position.

Then, as shown in FIG. 9, the decorative sheet 5 is crimped and integrated at a predetermined position of the door trim main body 4 by crimping the upper and lower dies 6 and 7 for crimping. The press-fitting of the decorative sheet 5 is completed by press-fitting into the wood groove 4a with the bar 7a.

[0009]

As described above, conventionally, when the decorative sheet 5 is mounted on a predetermined portion of the door trim main body 4, the guide pin is set on the surface of the lower die 7 for crimping. Since the member 7b and the set pin 8 are separated from each other, the set operation is difficult and smooth workability cannot be obtained. For example, when the synthetic leather is used as the decorative sheet 5, the pin hole formed by the set pin 8 is not suitable. It has been pointed out that this pin hole mark appears on the surface of the product without opening into the grained groove 4a, so that the appearance and design are remarkably deteriorated.

The present invention has been made in view of such circumstances, and an object of the present invention is to set a decorative sheet in a crimping device used for mounting a decorative sheet on a trim main body. It is an object of the present invention to provide a crimping device which can be smoothly operated, has no noticeable pin hole traces of set pins on the surface of a decorative sheet, and has an improved design.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an upper and lower crimping die for setting a trim main body and a lower and lower crimping die for setting a precut decorative sheet. And the outside of the lower mold
In a crimping device including a fixed wood grain bar and a vertically movable guide member, an air cylinder is provided between the wood grain bar and the guide member in cooperation with a crimping lower mold.
A vertically moving member that moves up and down and a decorative sheet on the top surface of the vertically moving member
And a set pin for holding a decorative sheet.

[0012]

As is apparent from the above construction, the first aspect is described.
According to the invention, since the decorative sheet holding means for positioning and fixing the decorative sheet to the crimping lower mold is provided between the wood grain bar and the guide member, it becomes easy to set the decorative sheet, Since the decorative sheet in the portion where the pin hole mark is formed enters the wood grain groove, it does not stand out to the outside. Further, according to claim 2
According to the invention, the decorative sheet is used to set the set sheet of the sheet holding means.
Since a pressing member is provided for insertion into the
Just put the decorative sheet on the sheet holding means,
The terminal of the decorative sheet can be inserted securely into the
You.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a crimping apparatus according to an embodiment of the present invention.

FIG. 1 is a cross-sectional view showing the configuration of a door trim in which a decorative sheet is mounted on a trim main body using the crimping apparatus according to the present invention, and FIG. 2 is a cross-sectional view showing the configuration of an embodiment of the crimping apparatus according to the present invention. 3 to 5 are cross-sectional views showing respective steps in a press-fitting process of a decorative sheet using the press-fitting device according to the present invention, and FIG. 6 is a cross-sectional view of a main part showing a configuration of a second embodiment of the press-fitting device according to the present invention. FIG.

Referring to FIG. 1, an automobile door trim 10 is shown.
Is a door trim main body 2 formed into a desired curved shape.
0 and a decorative sheet 30 attached to a predetermined portion of the surface of the door trim main body 20.

More specifically, the door trim body 20
Is a core material 21 formed of a polypropylene resin (a polypropylene composite resin mixed with talc or the like if desired) into a required shape by a stamping molding method, and a skin material 22 integrally formed on the surface side of the core material 21. Consisting of
As the skin material 22, a laminate in which a foam layer such as a polypropylene foam or a polyethylene foam is laminated on the back surface of a skin sheet such as an ABS-mixed PVC sheet is used.

The door trim main body 20 is provided with a wood grain groove 23 along the peripheral shape of the decorative sheet 30. The wood grain groove 23 is formed at the same time when the core 21 is subjected to mold press molding. ing.

On the other hand, the decorative sheet 30 is made of cloth of optional specifications such as velvet, jersey, tricot, moquette, etc.
Alternatively, synthetic leather is used, and the skin material 22 and the decorative sheet 30 are used.
The design effect of the product is enhanced by the contrast effect on the appearance. In the examples, synthetic leather is used.

The peripheral edge 3 of the decorative sheet 30
Oa is press-fitted into the wood grain groove 23 formed in the door trim main body 20 and its terminal processing is performed, thereby improving the appearance of the peripheral edge portion of the decorative sheet 30.

Next, a method of attaching the decorative sheet 30 to the door trim main body 20 will be described with reference to FIGS.

First, when mounting the decorative sheet 30,
The crimping device shown in FIG. 2 is used.

In FIG. 2, the crimping device is generally constituted by a crimping upper mold 40 for setting the door trim main body 20 side and a crimping lower mold 50 for setting the decorative sheet 30 side. Is vertically movable by a lifting cylinder 41, and is configured to securely hold the door trim main body 20 by a suction pad 42 utilizing a vacuum suction force.

On the other hand, the lower mold 50 for crimping is
1 is configured to be able to move downward when a press pressure equal to or more than a predetermined value is applied via a spring 52, and to return to the original position by the spring pressure of the spring 52 when the press pressure is released. With the lower mold 50 for crimping
A wood grain bar 53 is fixed to the lower table 51 via a bracket 54 on the outer periphery of the table, and a guide member 55 for positioning the decorative sheet 30 is attached to the lower table 51 via a spring 56 on the outside thereof. Have been.

Further, the crimping apparatus according to the present invention is characterized in that the decorative sheet holding means 60 is provided between the wood grain bar 53 and the guide member 55.

That is, the decorative sheet holding means 60
Is an air cylinder 61 attached to the lower table 51.
And a set pin 63 driven by the air cylinder 61
And a vertically moving member 62 provided with

The air cylinder 61 of the decorative sheet holding means 60 is controlled to operate in conjunction with the vertical movement of the crimping lower die 50.

Next, with reference to FIGS. 3 to 5, the respective steps of press-fitting the decorative sheet 30 to the door trim main body 20 will be described.

First, as shown in FIG. 3, the door trim main body 20 is set on the upper mold 40 for crimping. At this time, the door trim main body 20 is positioned at a predetermined position on the mold surface of the upper mold 40 for crimping by the suction pad 42. I have.

At this time, an adhesive is applied and dried in advance on the portion where the decorative sheet 30 is to be mounted.

On the other hand, in order to set the decorative sheet 30 on the lower mold 50 for crimping, the decorative sheet 30 may be positioned along the guide member 55. Set pin 63
And the positioning of the decorative sheet 30 is completed.

When the door trim main body 20 and the decorative sheet 30 are set on the crimping upper and lower dies 40 and 50 in this way, as shown in FIG. 4, the lifting cylinder 41 is driven and the crimping upper die 40 is moved. Starting to descend, crimping upper and lower mold 4
The decorative sheet 30 is pressure-bonded and integrated at a predetermined position on the surface of the door trim main body 20 with an adhesive by the pressure bonding of 0,50.

Then, when the crimping step is completed,
When the lifting cylinder 41 is driven, the crimping upper die 40 further descends. At this time, the spring 52 contracts in response to the spring pressure of the spring 52, and the crimping lower die 50 50 also moves down, and the vertical moving member 62 of the decorative sheet holding means 60 also moves down by the operation of the air cylinder 61, so that the wood grain bar 53 rises relatively, and the terminal 30a of the decorative sheet 30 is moved to the wood grain groove. 23 (see FIG. 5).

At this time, the guide member 55 is also lowered by the contraction of the spring 56.

When the graining process is completed,
The operation of the lifting / lowering cylinder 41 raises the crimping upper mold 40 to the original position, and accordingly, the crimping lower mold 50 also returns to the original position, and the decorative sheet holding means 60 also returns to the original position by the operation of the air cylinder 61. I do.

As described above, according to the crimping process of the decorative sheet 30 using the crimping device according to the present invention, the trace of the pin hole of the decorative sheet 30 pierced by the set pin 63 of the decorative sheet holding means 60 is shown in FIG. As shown in the drawing, the door trim main body 20 is located in the groove 23 for wood graining, so that the pin holes are not conspicuous on the product surface as in the prior art, the appearance of the peripheral portion of the decorative sheet 30 is significantly improved, and the design is improved. Is improved.

FIG. 6 shows another embodiment of the crimping apparatus according to the present invention. The same parts as those of the first embodiment are denoted by the same reference numerals, and the detailed description thereof will be omitted.

The crimping device according to the present embodiment performs an operation of automatically setting the decorative sheet 30 on the set pins 63 of the decorative sheet holding means 60.

That is, a substantially L-shaped pressing member 70 for pressing the terminal of the decorative sheet 30 downward on the outside of the guide member 55 is connected to the cylinder 71.

Therefore, when setting the decorative sheet 30 in the lower mold 50 for crimping, the operator simply places the decorative sheet 30 at an appropriate position with the guide member 55 as a guide, and the pressing member 70 moves up and down to hold the sheet. The operation of inserting the terminal of the decorative sheet 30 into the set pin 63 of the means 60 is automatically performed.

As described above, when the crimping device according to the present embodiment is used, it is only necessary to place the decorative sheet 30 on the lower mold 50 for crimping, and the work of inserting the decorative pin 30 into the set pins 63 becomes unnecessary. There is an advantage that it can be further simplified as compared with the apparatus of the embodiment.

Further, since the set pin 63 has a sharp tip, good safety in the work setting operation is ensured.

[0042]

As described above, the crimping apparatus according to the present invention has the following special effects.

(1) According to the first aspect of the present invention, the decorative sheet holding means is provided between the wood grain bar and the guide member located further outside thereof, so that the decorative sheet is provided. Since the pin holes formed in the trimming process enter the wood graining grooves in the trim main body in the wood graining process, the traces of the pin holes generated in the decorative sheet are not conspicuous outside, and the appearance of the decorative sheet peripheral edge portion is remarkably improved. This has the effect of improving the appearance.

(2) According to the first aspect of the present invention, since the decorative sheet holding means is set at a short distance from the guide member, the setting work of the decorative sheet becomes very easy.
This has the effect of improving workability.

(3) According to the second aspect of the invention, the movable cylinder into which the decorative sheet is automatically inserted is connected to the set pin of the decorative sheet holding means provided between the wood grain bar and the guide member. By installing the pressing member, the set pin can be automatically inserted simply by placing the decorative sheet on the predetermined part of the lower mold for crimping, and the workability of the decorative sheet is improved and the safety is improved. It has the effect of improving.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of an automobile door trim in which a decorative sheet is mounted on a trim main body using the crimping device according to the present invention.

FIG. 2 is a sectional view showing a configuration of an embodiment of a crimping device according to the present invention.

FIG. 3 is a sectional view showing a state in which a trim main body and a decorative sheet are set on the crimping device shown in FIG. 2;

FIG. 4 is a sectional view showing a crimping step in the crimping device shown in FIG. 2;

FIG. 5 is a cross-sectional view showing a grain cutting step in the crimping device shown in FIG. 2;

FIG. 6 is a sectional view of a main part showing a configuration of another embodiment of the crimping device according to the present invention.

FIG. 7 is a sectional view showing a general configuration of an automobile door trim.

FIG. 8 is a sectional view showing a configuration of a conventional crimping device.

FIG. 9 is a sectional view showing a conventional pressure bonding process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Automobile door trim 20 Door trim main body 21 Core material 22 Skin material 23 Groove part 30 Decorative sheet 30a Terminal 40 Upper crimping die 41 Elevating cylinder 42 Suction pad 50 Lower crimping die 51 Lower table 52 Spring 53 Bar for embedding 54 Bracket 55 Guide member 56 Spring 60 Decorative sheet holding means 61 Air cylinder 62 Vertical moving member 63 Set pin 70 Press member 71 Cylinder

Claims (2)

(57) [Claims] 1. A vertically movable crimping upper die (40) for setting a trim body (20) and a vertically movable lowering crimping die (50) for setting a pre-cut decorative sheet (30).
A fixed wood-graining bar (53) and a vertically movable guide member (5) on the outside of the lower mold (50).
5) a crimping device including a crimping lower mold (50) between the wood grain bar (53) and the guide member (55) by an air cylinder (61).
A vertically moving member (62) and a vertically moving member that move up and down in cooperation
A set for holding the decorative sheet (12) on the upper surface of (62)
A crimping device, comprising a decorative sheet holding means (60) provided with a pin (63) . 2. The setting of said decorative sheet holding means (60) .
Approximately L-shaped to insert decorative sheet (30) into toppin (63)
Pressing member (70) moves up and down by cylinder (71)
In addition, the decoration sheet (3
The crimping apparatus according to claim 1, wherein the setting of (0) is performed automatically.