JP2001328173A - Method for manufacturing trim component and press bonding die used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a mounting manhour for a decorative sheet and an ornament, to alleviate a load to be applied to a worker and to upgrade a working environment, in a trim component obtained by fixedly mounting the sheet and the ornament at a trim body. SOLUTION: A method for manufacturing a trim component comprises a pressing step of fixedly press bonding the decorative sheet 20 on a surface of a door trim body 11 and simultaneously fixedly caulking the ornament 30 by using a push nut set stage 64 for setting a push nut adjacent to press bonding upper and lower dies 52 and 62 and a press bonding die 40 having a pressing jig 55 mounted at a directly upper part of the stage. Accordingly, the manhour can be simplified, a working space can be saved and an air hammer is discarded, thereby alleviating the worker's load and eliminating a vibration and a noise.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a trim part such as a door trim for an automobile and a crimping die used therefor, and more particularly, to attaching a decorative sheet and an ornament to a trim body in the same crimping step. The present invention relates to a trim component manufacturing method and a crimping die which can reduce the number of steps, save a work space, and have an excellent work environment.

[0002]

2. Description of the Related Art Usually, the interior surface of a vehicle door panel is
The interior of the car has a door trim that protects occupants and enhances interior design.

For example, as shown in FIG. 8, a door trim 1 for an automobile has a decorative sheet 3 made of a cloth sheet such as cloth or a resin molding at a predetermined position on the surface of a door trim body 2 formed into a desired curved shape. Ornament 4 consisting of body
Is attached to enhance the appearance and design of the product.

[0004] The decorative sheet 3 is attached to the door trim body 2.
To attach the ornament 4 and the decoration sheet 3,
Although not shown, the decorative sheet is set by setting the door trim main body 2 on the lower mold for crimping, setting the decorative sheet 3 from above with an adhesive or an adhesive, and clamping the upper mold for crimping. 3 is adhesively fixed to the door trim main body 2.

Further, the ornament 4 is connected to the door trim main body 2.
As shown in FIG. 9, the ornament 4
After the mounting bosses 4a formed on the rear surface of the door trim at appropriate pitch intervals are inserted into the mounting holes 2a of the door trim main body 2, the ornaments 4 are mechanically fixed by fitting push nuts 5 therein.

That is, as shown in FIG.
The ornament 4 and the door trim main body 2 are set on the upper side as shown. At this time, the ornament 4 is set with the mounting boss 4a penetrating through the mounting hole 2a of the door trim main body 2 and its tip facing upward.

The push nut 5 is caulked into the mounting boss 4a while hitting the air hammer 7 while holding the push nut 5 on the air hammer 7 with a vacuum or the like. Usually, five or six points are set.

[0008]

As described above, in the door trim 1 in which the decorative sheet 3 and the ornament 4 are attached and fixed to the door trim main body 2, the crimping step of the decorative sheet 3 using a crimping die, the air hammer, and the like. It is pointed out that a manual caulking process of the ornament 4 is necessary using the No. 7 and the man-hour is increased, and a work space for performing crimping work and a crimping die space is required, and the working space is also increased. ing.

Further, in the conventional method of caulking using the air hammer 7, since there are many caulking points and the door trim 1 is a mass-produced part, skill is required to perform uniform caulking, and the caulking variation is reduced. Easy to occur, it is difficult to secure a constant mounting strength of the ornament 4,
In addition, it is pointed out that the air hammer 7 easily exerts an excessive load particularly on a wrist of a worker, and has a significant adverse effect on the health of the worker due to significant vibration and noise.

The present invention has been made in view of the above circumstances, and a method of manufacturing a trim component having a decorative sheet and an ornament attached to the surface of a trim main body, and a crimping mold used for the trim component are provided. By using the same mold for mounting the ornament and performing it in one press process, it is possible to reduce the man-hours and save the work space, and to eliminate the manual caulking process, It is an object of the present invention to provide a method of manufacturing a trim part and a crimping die which can reduce a load and is preferable in a working environment.

[0011]

In order to achieve the above object, the present invention relates to a method of manufacturing a trim component, comprising attaching a decorative sheet and an ornament to a predetermined portion of a surface of a trim body. Set the trim body on which the decorative sheet and ornaments are temporarily mounted on the lower mold, and set the member to set the push nut on the push nut set stage installed adjacent to the lower mold for crimping, and the upper plate of the upper structure By pressing down the upper and lower crimping dies, the decorative sheet is crimped and fixed to the trim body surface while the pressing jig attached to the upper plate presses the ornamental surface. The mounting boss protruding from the back of the ornament has a push nut set on the push nut set stage. By fit in Tsu bets, characterized and crimped step of the decorative sheet, as well as ornaments to secure the ornament to the trim main body, in that it consists of.

The crimping die used in the method of the present invention is a crimping die for crimping and fixing a decorative sheet and an ornament to a predetermined portion of the trim main body surface. An upper structure in which an upper die for crimping is attached to the plate via a buffer spring, and a pressing jig is provided adjacent to the upper die for crimping, and a lower plate through a buffer spring And a lower structure having a push nut set stage for setting a push nut adjacent to the lower mold for crimping.

Further, the crimping die used in the method of the present invention is characterized in that the push nut setting stage is provided with a setting error detecting means for detecting a setting error of the push nut.

As is apparent from the above structure, according to the method of the present invention, the trim main body and the decorative sheet and the ornament temporarily fixed thereto are set on the lower die for crimping as the lower structure, while the push nut set stage is set. When the push nut is set and the upper structure is operated, the upper mold for pressing and the pressing jig descend, and the upper and lower dies for crimping fix the decorative sheet on the trim body surface with the upper and lower dies for pressing. The ornament is pressed down and the push nut set on the push nut set stage can be forcibly fitted to the ornament mounting boss. Can be fixed.

Further, the pressing die used in the present invention is a push nut set stage for inserting an ornament into the trim main body and a pressing nut set stage, and a pressing jig for the pressing upper and lower die for pressing and fixing the decorative sheet to the trim main body. Since the tools are installed adjacent to each other, a small work space is required, and a conventional caulking operation by a worker is performed using a press power, so that the load applied to the worker can be reduced.

Further, when the push nut is set on the push nut setting stage, a setting error detecting means is provided, so that a setting error can be avoided.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a trim part manufacturing method according to the present invention.

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, and FIG. 3 is an overall view of one embodiment of a crimping die according to the present invention. 4 to 6 show a manufacturing process of a door trim, FIG. 4 shows a setting process, and FIGS.
Is an explanatory view showing a decorative sheet and an ornament pressing process, respectively, and FIG. 7 is a schematic view showing an overall configuration of another embodiment of a pressing die according to the present invention.

In FIG. 1 and FIG. 2, an automobile door trim 10 includes a door trim main body 11 made of a synthetic resin molded article of a polypropylene resin (hereinafter referred to as a PP resin) mixed with a filler such as talc, and a door trim main body 11 on the surface of the door trim main body 11. In order to enhance the design, a decorative sheet 20 made of a cloth sheet such as a cloth is attached to the inscribed portion, and an ornament 30 having a surface pattern such as a grain pattern is attached along the waist. I have.

More specifically, in the present embodiment, the door trim main body 11 comprises a trim upper 11a and a trim lower 11
The trim upper 11a and the trim lower 11b are formed into a desired curved shape by injection molding or mold press molding.

The decorative sheet 20 and the ornament 30 are mounted on the trim upper 11a, while the trim lower 11b is swelled in the center toward the vehicle interior, and the armrest 12 is provided on the lower side so that the occupant can rest on his elbow. A door pocket 13 and a speaker grill 14 are formed adjacent thereto. Further, a wood grain groove 15 is formed in the trim upper 11 a along a peripheral portion of the decorative sheet 20.

Note that the door trim main body 11 is not limited to the above-described upper and lower two-piece body, but may be a single molded body. Therefore, the decorative sheet 20 and the ornament 30 are mounted on the door trim main body 11 hereinafter. explain.

In the present embodiment, a cloth is used for the decorative sheet 20, and the decorative sheet 20 is adhered and fixed to the middle part of the door trim main body 11 via an adhesive layer 21.
The door trim body 10 is press-fitted into the wood groove 15 and the peripheral portion of the decorative sheet 20 is finished in a good appearance.

Next, the ornament 30 is made of PP resin, A
It is made of an injection molded body of a synthetic resin such as a BS resin, and a wood grain pattern or the like is formed on the front surface by silk printing or the like, and mounting bosses 31 are formed on the back surface at predetermined intervals along the longitudinal direction, This mounting boss 31 is used as the door trim body 11.
The ornament 30 is attached to the waist portion of the door trim main body 11 by inserting the push nut 32 from the tip side of the attachment boss 31 and fixing the push nut 32.

The above is the basic configuration of the vehicle door trim 10 to which the method of the present invention is applied. However, the present invention can reduce the number of manufacturing steps of the vehicle door trim 10 and reduce the working space. Load of the person is small,
It is an object of the present invention to provide a manufacturing method which is advantageous also in a working environment and a crimping die used therefor.

FIG. 3 shows a crimping mold 4 used in the method of the present invention.
The crimping die 40 is composed of a movable upper structure 50 and a fixed lower structure 60.

That is, the upper structure 50 is connected to an elevating cylinder (not shown), and an upper die 52 for crimping is mounted on an upper plate 51 which can move up and down by a predetermined stroke via a buffer spring 53. Therefore, the upper die 52 for pressure bonding to the upper plate 51 is
3 can be moved up and down in accordance with the spring force of the upper plate 51 around the upper die 52 for crimping.
It is fixed to.

Further, a pressing jig 55 for attaching the ornament 30 is attached to the lower surface of the upper plate 51 so that the ornament 30 can be attached at the same time by using the crimping mold 40. The pressing jig 55 covers the entire surface of the ornament 30, and further has a pressing block 551 having an occupied area partially including the periphery thereof.
Are attached to the support member 552.

On the other hand, the lower structure 60 is configured such that the lower die 62 for crimping is mounted on the upper surface of the lower plate 61 on the fixed side.
3 and the lower mold 62 for crimping
Decreases when a press pressure greater than the spring pressure of the buffer spring 63 is applied, and rises when the press pressure is released.

Then, adjacent to the crimping lower mold 62,
A push nut set stage 64 is provided immediately below the pressing jig 55 of the upper structure 50. The push nut set stage 64 includes a support holder 641
A plurality of locating pins 642 are provided at a plurality of locations corresponding to the crimping points. The locating pins 642 are movably mounted vertically while being constantly urged upward by a spring 643. It is configured to protrude from the insertion hole 644 of the support receiving base 641, and the push nut 32 is set in this protruding portion.

Next, an operation procedure for mounting and fixing the decorative sheet 20 and the ornament 30 to the door trim main body 11 using the crimping die 40 shown in FIG. 3 will be described. First, as shown in FIG. Push nut 32 on locate pin 642 of nut set stage 64
While placing the decorative sheet 20 on the lower part 62 for crimping with the front side of the door trim main body 11 facing upward. The mounting boss 31 is inserted into the mounting hole 16 of the door trim main body 11, and the ornament 30 is set to the door trim main body 11.

At this time, the decorative sheet 20 has a pressure-sensitive adhesive layer 21 applied on the back side thereof. For example, the decorative sheet 20 may be laminated with the adhesive layer 21 with release paper, and the release paper may be peeled off to expose the adhesive layer 21 and be attached to the adhesive surface.

As described above, in the setting step shown in FIG. 4, when the crimping upper and lower dies 52 and 62 are in the mold open state,
Push nut 3 on push nut set stage 64
2 and the door trim main body 11 to which the decorative sheet 20 and the ornament 30 are temporarily mounted may be set at appropriate positions of the lower mold 62 for crimping.

When the setting process is completed, the lifting cylinder (not shown) of the upper structure 50 is driven, and the upper plate 51 of the upper structure 50 performs a predetermined stroke lowering operation. As shown in FIG. 11
The decorative sheet 20 is pressed against the door trim main body 11 at an initial predetermined press pressure by clamping the upper and lower pressing dies 52 and 62 with the decorative sheet 20.

At the time of this initial press working, the wood grain bar 54 has not entered the wood grain groove 15 of the door trim main body 11, and a sufficient pressing pressure is still applied to the ornament 40 from the pressing jig 55. Not.

Further, the lowering operation of the upper plate 51 is continuously performed, and is fixed to the lower surface of the upper plate 51 as shown in FIG. By the wood grain bar 54, the peripheral edge 22 of the decorative sheet 20 is pressed into the wood grain groove 15 of the door trim main body 11. At this time, since the cushioning springs 53 and 63 contract, an excessive press pressure is not applied to the decorative sheet 20.

On the other hand, when the pressing jig 55 fixed to the lower surface of the upper plate 51 is lowered, the door trim main body 11 and the ornament 30 are brought into contact with the upper surface of the support receiving base 641 of the push nut set stage 64 and the pressing The mounting boss 31 of the ornament 30 is sandwiched between the pressing block 551 of the jig 55 and the locate pin 642 of the push nut set stage 64.
The mounting boss 31 presses the locating pin 642 downward, so that the locating pin 64
2 is removed from the push nut 32, and instead, the mounting boss 31 of the ornament 30 is forcibly press-fitted and fixed to the push nut 32, thereby completing the caulking and fixing of the ornament 30.

By providing the pressing jig 55 and the push nut set stage 64 at positions adjacent to the crimping upper and lower dies 52, 62, the decorative sheet 20 is provided at a predetermined position on the surface of the door trim main body 11 in one pressing step. In addition, since the ornament 30 can be mounted and fixed, the number of mounting steps can be reduced by half, and productivity can be increased. In addition, the working space is only required for the installation space of the crimping die 40, and the working space can be saved. Compared to the conventional method of caulking using an air hammer,
There are various advantages, such as that an excessive load is not applied to the worker and various problems in the working environment such as noise and vibration can be effectively solved.

Next, FIG. 7 shows a crimping mold 4 according to the present invention.
In this embodiment, a mistake in setting the push nut 32 is prevented in order to further increase the productivity.

That is, the push nut set stage 64 provided on the lower structure 60 has
Is provided with a proximity sensor 65. Therefore, when the push nut 32 is set in the normal posture shown by the dotted line, the proximity sensor 65 does not detect any abnormality, but when the push nut 32 is set on the locate pin 642 upside down as shown by the solid line, the push nut 32 Because
When the proximity sensor 65 detects a setting error, the cable 65
1, a signal is sent to a control device (not shown) to cancel the drive of the lifting cylinder in the crimping die 40, or it is assumed that an abnormality has occurred, and a command is sent from the control device to operate the warning device. Thus, the occurrence of defects can be prevented beforehand.

[0041]

As described above, according to the method for manufacturing a trim part and the crimping die used for the same according to the present invention, the decorative sheet and the ornament can be simultaneously mounted and fixed on the trim main body, so that the man-hour is greatly reduced. Therefore, there is an effect that productivity can be improved.

Further, conventionally, a mold space used for crimping of the decorative sheet and a crimping work space for crimping the ornament were required. However, the present invention uses the same crimping mold. Since the decorative sheet crimping process and the ornament caulking process can be performed in the same space, the space performance is excellent, and the operator only needs to set the push nut on the push nut set stage, greatly reducing the load applied to the operator. Since it can be reduced and there is no vibration or noise caused by the conventional air hammer, there is an effect that the workability is improved and the work environment is improved.

[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 an overall configuration of a first embodiment of a crimping die according to the present invention.

FIG. 4 is an explanatory view showing a member setting step in the method of the present invention.

FIG. 5 is an explanatory view illustrating a decorative sheet pressing step in the method of the present invention.

FIG. 6 is an explanatory view showing the ornament pressing step in the method of the present invention.

FIG. 7 is an explanatory view showing the overall configuration of a second embodiment of the crimping die according to the present invention.

FIG. 8 is a front view showing a conventional automobile door trim.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is an explanatory view showing a conventional ornamental caulking operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Automobile door trim 11 Door trim main body 15 Wood groove 16 Mounting hole 20 Decorative sheet 21 Adhesive layer 22 Peripheral terminal 30 Ornament 31 Mounting boss 32 Push nut 40 Crimping die 50 Upper structure 51 Upper plate 52 Upper crimping die 53 Buffer Spring 54 wood grain bar 55 pressing jig 551 pressing block 60 lower structure 61 lower plate 62 crimping lower die 63 buffer spring 64 push nut set stage 641 support receiving base 642 locate pin 643 spring 644 insertion hole 65 proximity sensor

Claims (3)

[Claims] At a predetermined position on a surface of a trim body (11),
In a method of manufacturing a trim part having a decorative sheet (20) and an ornament (30) mounted thereon, the decorative sheet (20) and the ornament (30) are temporarily mounted on a crimping lower mold (62) in a lower structure (60). A step of setting a member for setting the worn trim main body (11) and a push nut (32) on a push nut set stage (64) installed adjacent to the lower die for crimping (62); ), The upper plate (51) is lowered, and the upper mold for crimping (52) and the lower mold for crimping (62) are clamped to form a decorative sheet (20) on the surface of the trim body (11).
At the same time as press-fitting, the pressing jig (55) attached to the upper plate (51) is
0), the mounting boss (31) protruding from the back of the ornament (30) fits into the push nut (32) set on the push nut set stage (64), whereby the ornament is turned on. (3
And (c) fixing a decorative sheet and an ornament to the trim main body (11) by pressure bonding. 2. A crimping die (40) for crimping and fixing a decorative sheet (20) and an ornament (30) to a predetermined portion of the surface of a trim body (11).
No. 0) has an upper plate (51) which can be moved up and down, and a crimping upper die (52) is attached via a buffer spring (53), and is adjacent to the crimping upper die (52). Upper structure (50) provided with a tool (55)
And a buffer spring (6) on the lower plate (61).
A lower mold for crimping (62) is mounted via 3), and a push nut set stage (64) for setting a push nut (32) is provided adjacent to the lower mold for crimping (62). And a lower structure (60). 3. A push nut set stage (64).
3. A crimping die according to claim 2, further comprising a setting error detecting means (65) for detecting a setting error of the push nut (32).