JPS6339323A - Formation of trim material - Google Patents

Abstract

PURPOSE:To so constitute the title method that manufacturing cost is reduced drastically and the title material can be used commonly and widely for various purposes as a trim material of all kinds of cars and specifications, by a method wherein either a top force or a bottom force in a hot molding tool is provided with a built-in cutting- off punch operating to a molding action of the said molding tool and processing of a hole is performed during the same process as molding of a base. CONSTITUTION:At the time of molding of a trim material 1, after a base 2, which is corrugated cardboard, has been mounted on a heated die 10, a punch 11 which has been heated similarly to the die 10 is descended and hot molding of the base 2 is performed into a desired form. Then all of holes 6, 7 other than holes 4, 5, which are common for all kinds of cars, are bored by an action of what is called force cutting by both a cutting-off punch 12 and pad 15 by moving the cutting-off punch 12 upward all at once prior to an ascent of the punch 11 after hot molding. After the ascent of the punch 11, a skin material 3 is set one the base 2 left behind on the die 10 and the skin material 3 is stuck to the base 2, which has been molded already, by descending the punch 11 again. With this construction, the trim material 1 where on only the holes 6, 7 has been formed is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for simultaneously forming and drilling an interior material using JX 44 corrugated poles.

Conventional techniques and their problems Recently, cardboard-based materials have come into use as interior materials. Gore is made by pasting decorative skin + A on the surface of molded cardboard, and is characterized by its rigidity and heat retention, as well as its light weight. It tends to be frequently used as

By the way, when manufacturing such interior materials, especially molded ceilings for automobiles, the following three methods are used.

First, a cardboard base material is thermoformed into a desired shape using a hot press method, and then, with the thermoformed base material remaining in the mold, a skin +A is applied to the surface of the base material. -1, by pressing again, the skin material is bonded to Jil; H at the same time as forming the skin 1A.
The interior material obtained in step 2 is pressed in another press 4.
91, and perform the necessary hole drilling at the same time as trimming the peripheral edge of the interior material or after the trimming process b1. Drilling with an assist grip or iron
, i'-, and all i1i types (3).Finally, the interior material is set in different press molds prepared according to the car model, Holes that differ depending on the car model are specifically drilled using a special piercing bonder.Thus, by going through the following two steps, several types of molded ceilings are obtained according to the specifications of the car.

However, according to such a conventional method, as mentioned above, after the base material and the skin material are pasted together, they are reset in the piercing mold and the holes are drilled, which requires a large number of man-hours.
Second, all the pores will be formed in both the base material and the skin material at the same time.

As a result, when transporting or installing the interior material, other objects may hit the peripheral edge of the hole and the skin material is likely to be peeled off from that area.

In addition, according to the conventional method, in the piercing process, different holes are punched depending on the car model and specifications using a piercing punch, which not only increases the number of man-hours but also reduces the quality of the product. There is a problem that management and storage become troublesome.

Preparing several types of interior materials with holes for mounting parts according to the four-piece type, type, and specifications not only makes manufacturing the interior materials and managing the completed interior materials troublesome; A large area is also required for storing each type.

This invention has been made in view of the conventional problems as described above, and includes a parting punch that operates in conjunction with the coloring operation of the mold, in either the -1 mold or the lower mold in a thermoforming mold. The built-in 0° makes it possible to perform hole drilling, which was previously done in the piercing process, in virtually the same process as forming the base material, and then immediately attach the skin material. The main purpose of this invention is to solve the above-mentioned conventional problems all at once.

Means for Solving the Problems In the molding method of the present invention, a step of placing and thermoforming a base material made of corrugated poles in a thermoforming mold consisting of a lower mold and two molds; The cutting-off punch provided on one of the I-shaped molds and the bat provided on the other mold to face the cutting-off punch work together to form a curved thermal A process of drilling holes such as parts mounting holes on the painted base material, a process of placing a skin material on the base material with holes processed in the thermoforming mold, and a process of heating the skin material. It is characterized in that it includes a step of thermally adhering it to a base material using a mold.

According to the method described in Section 2 of ``Operation,'' thermoforming of the base material itself, drilling of parts attachment holes, etc., and subsequent adhesion of the skin material are all performed within the thermoforming mold.

EXAMPLES First, in order to facilitate understanding of the present invention, the structure of the interior material itself molded by the method of the present invention will be described.

FIGS. 1, 2, and 3 illustrate a molded ceiling of an automobile as an interior material 1, and this interior material I includes a base material 2 made of corrugated cardboard and a surface of the base material 2 adhered to the surface of the base material 2. It is composed of a skin material 3. It goes without saying that the interior material 1 consisting of the base material 2 and the skin material 3 is press-molded into a predetermined shape, and is trimmed with the base material 2 and the skin material 3 attached together. Holes for attaching interior parts such as assist grips, coat hangers, or sun visors, i.e., various holes 4.5 common to all vehicle models, penetrate both the base material 2 and the skin material 3 on the outer peripheral edge. It is formed in a crooked manner. These holes4.
5 is formed so as to pass through both the base material 2 and the skin material 3, while all the holes 6 and 7, which are different for each vehicle model, are uniformly drilled in the base material 2. There is. These holes 6.7 are for the interior material l to be attached.Regardless of the specification of the car, except for the hole 4.5 which is common to all car models,
All required holes are uniformly drilled.

In other words, with the exception of hole 4.5, which is common to all vehicle models, even if a hole is unnecessary depending on the specifications, if it is required by another specification, it is formed, so that holes are not present or absent depending on the specifications. It is. The holes 6°7 shown in +irj are covered with the skin material 3, and the above structure constitutes a molded ceiling common to all vehicle models.

Therefore, according to such an interior material, when attaching interior parts such as an assist grip, a hanger, or a sun visor when assembling it into a car,
It is sufficient to select and use only the required holes from among the holes 4, 5, 6.7.

In other words, the holes 4 and 5, which are common to all vehicle models, are formed in advance so as to penetrate both the base material 2 and the skin material 3, so you can insert the screws (J tapping screws, -) in that state. For the other holes 6 and 7, use a sharp jig or the tip of a tapping screw to form a small hole in the skin material 3 in the area where the hole is needed. Fastening parts such as tapping screws enter the hole while pushing out the small hole of the car, and are screwed into the pre-threaded hole or female threaded part of the other party, which is pre-formed on the vehicle body. This makes it possible to remove the interior parts (=l The hole position is μ
I can put it out. Further, since the holes that are not used depending on the specifications are covered by the skin material 2, there is no problem in appearance -1-.

In this way, by uniformly forming interior materials without distinguishing between specifications, there is no need to stock and manage interior materials according to each specification, which simplifies management work and saves space. It is a press release in this respect.

Fig. 4 shows an embodiment of the present invention, in which 3,10 iJ: d) (Sugui, IN:I is also an I-type punch, and these Gui IO and punch 11 are each equipped with a heating device not shown in the figure.
2 is heated to 11 tatami mats and molded into the desired shape.

In addition, the die 10 marked with 11 "j has an interior + A' I hole 6,
A plurality of cylindrical cut-off punches I2 are arranged in a horizontal series at positions corresponding to 7, and these cut-off punches 12 are as follows:
If you put the tip of it on the tie surface l (1:
A return spring 17I is separately arranged between the bottom surface of the recess provided in the tie and the parting punch 12, and this causes the entire parting punch 12 to move in the direction of 1. The return force is (J'j).Then, the machining surface (mold surface) of the punch 1j corresponding to each parting punch 121 in 01j.
For example, a puff hole 15 made of a soft material such as copper is installed (J), and as will be described later, when machining the hole 6°7, the tip of the parting punch I2 is a puff) ζ1.
The entire length of the cut-off punch 12 is set so that it stops when it slightly (approximately 0.2 to 0.5 mm) bites into the 5 side.

1k, a camshaft 16 is disposed below the projection 12J so as to be perpendicular thereto. This force J1-yaft 16 is the back play 1.
A plurality of eccentric cams 17 are provided separately in contact with each of the cams 13, and the camshaft 16 is rotated by a lower drive stage (not shown), such as a hydraulic cylinder or a hydraulic motor, thereby producing the cut-off punch. 12 moves forward and backward all at once J-
It's becoming a sea urchin. In addition, 18 in the figure is a hole for discharging the pierced earring piece.

When molding the interior material 1 using a device configured as shown in FIG. 4, first, as shown in FIG. The base material 2 is thermoformed into a desired shape by the usual method of descending the heated punch 11. Then, after the heat forming, before the punch II ascends, the cut-off punch 12 is pressed in one neck. Through the upward movement of the punch 12 and the pad 15, holes 6 and 7 other than holes 4 and 5, which are common to all vehicle models, are removed.
(Fig. 1) is completely penetrated 1, from -, the conventional final -1
, in the piercing process, all the holes are formed using the piercing mold. At this time, the cutting-off punch 12 ("The addition is finished (
(.

Return to the initial position at point 12 and then add fl! Add j1 and wait. Punch 11 is +. 'j'' 1lly, put the skin 113 on the base +42 left on Gui 1o7, lower the punch 11 again and attach the skin material 3 to the already formed base material. 5. The following results:
An interior (41) is obtained in which only the holes 6.7 (FIG. 1) are formed.

Next, set the interior + A1 obtained in this way in another Torino piercing mold, trim the outer periphery of the interior (1) to the desired shape, Forming 4 grooves through the front and back sides.By going through the steps below, the interior finish shown in Figure 1 can be created, i.e., a common interior material for all IP types that can meet all 1 work type specifications 1 □ 2 I
In addition, in the above embodiment, the case of molding an interior material for an automobile, that is, a molded ceiling, was explained, but the present invention is not limited to this, but can be applied to a relatively soft material. It goes without saying that the same method can be applied to all interior materials used for other purposes. The cut-off punch I2 may be provided on the punch 11 serving as the upper die, but it is better to provide it on the lower die in terms of ease of removing punching scraps and ease of attaching cams and the like.

Effects of the Invention As is clear from the above explanation, according to the present invention, the thermoforming of the base material itself, the drilling of parts mounting holes, etc., and the subsequent adhesion of the skin material are all performed within the thermoforming mold. Now, the molding of the interior material and the drilling, which were conventionally performed in two separate steps, can be performed in substantially the same step, making it possible to significantly reduce the number of manufacturing steps.

In particular, when manufacturing automobile interior materials that consist of a skin material and a base material, the steps of first drilling the necessary holes only in the base material and pasting the skin material on top can be performed in the same process. , each car model.

There is no need to manufacture several types of interior materials according to specifications, and it can be used universally as interior materials for all vehicle models and specifications, making manufacturing and management easier, and storage easier. In addition to being able to solve the space problem at the same time, it also has many effects, such as reducing the number of man-hours required for drilling holes in the car model and specification side, which was conventionally done.

In addition, the cut-off punch cooperates with the pad to form a shape that essentially cuts through the hole during the drilling process, so the periphery of the drilled hole does not peel off or the shape is distorted. The above-mentioned interior material does not impair its assemblability and does not deteriorate its appearance quality.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a molded ceiling of an automobile as an example of an interior material molded by the method of the present invention, and FIGS. 2 and 3 are cross-sectional views of holes drilled in the interior material. , FIG. 4 is a sectional view of a 4° thermoforming mold showing an embodiment of the method of the present invention. -11~!...Interior material, 2...Base material, 3...Skin material, 4 ．．
5゜6.7... Hole, IO... Gui (lower mold), 11.
...Punch (upper die), I2...Cut-off punch, 15.
··pad.

Claims (1)

[Claims] (1) A step of thermoforming a cardboard base material by placing it in a thermoforming mold consisting of a lower mold and an upper mold, and a cut-off punch provided in either the lower mold or the upper mold. and a step of drilling holes such as parts mounting holes in the thermoformed base material by cooperating with a pad provided on the other mold so as to face the cut-off punch; An interior decoration comprising the steps of: placing a skin material on a base material that has been drilled in a mold; and thermally bonding the skin material to the base material using a thermoforming mold. How to form the material.