JPS63176133A - Manufacture of trim material - Google Patents

Abstract

PURPOSE:To prevent what is called a whitening phenomenon running along a weld line, by a method wherein welding treatment is performed while floating a little at least a part adjoining to a weldline-forming part out of a part covering an ornament member of a synthetic resin skin material from the surface of the ornament member. CONSTITUTION:An intermediate product, where a gap is left behind between the surface of a base material and ornament member 21, though the ornament member 21 is stuck to the surface of the base material, is obtained. Then an opening at the top of a lower surface plate 41 is closed by setting up a base material 11 to the lower surface plate 41 of a skin material welding equipment so that a receiving surface of the lower surface plate 41 is situated to the lower part of the circumference of the ornament member 21 located at a surface side of the base material 11. Air is blown into through an air blowing pipe 44 at the time directly before contact of a weld tooth profile 48 with a synthetic resin skin material 31, the base material 31 is floated by using jointly suction force through suction pipe 49, and a part of the synthetic skin material 31 is welded to the fringe of the ornament member 21 with the weld tooth profile 48 by pressurizing the same by applying a high-frequency current to the same, then the part is removed on site mechanically or by making use of differential pressure by performing fusion cutting along a weld line with a fusing blade 47.

Description

[Detailed Description of the Invention] <Industrial Application Fields> The present invention provides a good-looking automobile in which the surface of a base material is covered with a raised ornament member such as carpet or moquette material and a synthetic resin skin material. The present invention relates to a manufacturing method for automobile interior materials that allows for easy mass production of interior materials.

(Prior art) A synthetic resin skin material is completely coated on the surface of a base material to which a raised ornament member such as carpet material is partially attached, and this is welded to the periphery of the ornament member. A method of manufacturing an automobile interior material in which a portion of the synthetic resin skin material covering the ornament member is removed along the welding line is widely known, such as in Japanese Patent Publication No. 59-24008.

(Problems to be Solved by the Invention) However, in this type of conventionally known method, a synthetic resin skin material is coated on the surface of a base material to which a raised ornament member is partially attached. When welding a part of the material to the periphery of the ornament, the high heat of the weld tooth pattern causes excess material to bulge up along the weld line on the synthetic resin skin material, causing it to get tangled with the naps of the ornament material, and the heat generated during welding. The brushed hair is affected by pressure shadows and electric field concentration, causing the hair to fall down.
There was a problem in that product defects such as whitening phenomenon occurred frequently.

(Means for Solving the Problems) The present invention solves the above-mentioned problems and uses a synthetic resin skin material without causing any adverse effects such as whitening on the part along the weld line of a raised ornament member. It was developed for the purpose of producing an automobile interior material that can be accurately and easily welded to the peripheral edge of an ornament member to obtain a product with a good finish. An automobile in which a synthetic resin skin material is coated on the surface of the material and is welded to the periphery of the ornament member, and a portion of the synthetic resin skin material that covers the ornament member is removed along the welding line. In the manufacturing method for interior materials, when welding the synthetic resin skin material to the periphery of the ornament member, at least the portion of the synthetic resin skin material that covers the ornament member adjacent to the weld line forming part is removed from the surface of the ornament member. The feature is that the welding process is performed while raising the surface slightly.

The base material used in the present invention may be of any material such as a synthetic resin board or a hard fiber board, and its structure may be a flat plate or a molded base material with irregularities. As ornamental materials to cover the surface of the material, we compared brushed fabrics such as moquette fabrics and carpet fabrics with a nap length of about 0.5 to 10 mm woven from chemical fibers, natural fibers, and other arbitrary fibers, as well as flocked fabrics. On the other hand, the synthetic resin skin material does not really matter as long as it can be welded by high frequency welding or other means, but generally it is a solid type made of thermoplastic synthetic resin. Alternatively, a laminated type sheet having a foam layer may be used, and depending on the material, a synthetic resin adhesive layer for welding such as true melt adhesive may be formed in advance on the back side of the part to be welded. Furthermore, the welding means for welding the synthetic resin skin material to the periphery of the ornament member may be performed using any welder such as an ultrasonic welder in addition to the high frequency welder. In addition to blowing air into the back side of the synthetic resin skin material, the means for raising at least the part adjacent to the weld line formation part of the covering part slightly above the surface of the ornament member is also carried out by suctioning the synthetic resin skin material from the front side. Good too.

(Example) Next, an example of the present invention will be described with reference to the skin material vacuum forming apparatus shown in FIGS. To explain the series of steps in detail, first, in Figures 1 and 2, (1) is a receiving mold with a vacuum box (2) at the bottom, and the mold surface has vacuum suction holes (3). ) is formed on a concave-convex mold surface, and a part of this mold surface is communicated with an air blowing pipe (4) connected to an air supply source. (5) is the receiving mold (
The assist mold (5) is arranged such that it can be freely matched with the mold surface of the assist mold (5), and most of the mold surface of the assist mold (5) corresponds to the mold surface of the receiving mold (11). In other words, only the part of the receiving mold (11) facing the part where the ornament member is set has a concave surface sufficient to form the required cavity (6) between the mold surface of the receiving mold (11) during mold matching. In addition, (7) in the figure is the mold surface of the receiving mold (1) in order to maintain the balance of the base material and enhance the sealing effect when placing the base material on the mold surface of the receiving mold (11). A soft sealing material (8) is partially embedded in the mold surface of the receiving mold (11) so as to slightly protrude from the support mold (5). (11) is a base material set on the mold surface of the receiving mold (11), and the base material (11) is made of a synthetic resin plate or hard fiberboard and is preformed into a textured one. with small hole (lla)
A large number of base material (11) are arranged and adhesive is applied to the entire surface thereof, and part of the surface of the base material (11) has a nap length of 0.
Carpet fabric or moquette fabric made of polyester or polyamide fibers, which are about 5 to 10 mm long and have a softening point of about 70 to 120°C, are either cut into the desired shape after being attached, or cut into the required shape in advance and attached to a bag. Ornament parts (21
) is pasted, and (31) is a synthetic resin skin material with a foam layer laminated on the back side if necessary, and the synthetic resin skin material (31) is made of vinyl chloride resin or polyethylene resin. Alternatively, it is made of a vacuum-formed thermoplastic synthetic resin such as a thermoplastic polyester resin and a weldable leather or film material, which is not melted but is sufficiently softened at an optimum temperature of, for example, 100 to 200°C. It is set between the receiving mold (11) and the assist mold (5) in a heated state.On the other hand, in FIG.
1) is a lower surface plate for welding skin materials using high frequency,
The outline of the receiving surface at the upper end of the ornament member (21
), and an air blowing pipe (44) connected to an air supply source is communicated with this lower surface plate (41).

Additionally, above the lower surface plate (41) there is a fusing blade (47) that cuts the lower end.
A box-shaped upper surface plate (45) with a weld tooth pattern (48) attached.
) are arranged so that they can be freely matched, and a suction pipe (49) connected to a vacuum source is communicated with the inner cavity of the upper surface plate (45), so that the upper surface plate (45) functions as a vacuum box. It is given.

Next, a specific example of manufacturing a door trim as an automobile interior material using the above-mentioned equipment and materials will be shown.
The base material (11) is made by three-dimensionally molding a wood-based hard fiberboard into the shape of a door trim using a well-known molding device.The base material is a fabric piece made of polyester fiber with a softening point of 90° C. and has a nap of two lengths on the surface. The ornament member (21) is attached to the base material (11) by partially pasting it around the convex portion formed on the surface and trimming it into a desired shape.
Partially attached to the surface of. Then, this is set on the mold surface of the receiving mold (1) where the assist mold (5) has been opened, and a vinyl chloride resin sheet with a foam layer is placed above it as a synthetic resin skin material (31) at 150°C. The assist mold (5) and the receiving mold (11) are clamped together. At this time, at the same time or just before the assist mold (5) comes into contact with the base material (11),
The ornamental member (21) of the synthetic resin skin material (31) is blown into the synthetic resin skin material (31) by blowing air at atmospheric pressure or higher, preferably 2 to 3 kg/cnt, through the air blowing pipe (4) which communicates with the mold surface of the receiving mold (11). The upper part of the assist type (5
) and the cavity (6) formed between the mold (1) and the vacuum box (2) connected to a vacuum source and the vacuum suction installed in the mold +11. Hole (3)
And if the synthetic resin skin material (31) which has been heated and softened through the small holes (lla) of the base material (11) is vacuum-formed on the surface of the base material, the ornament member (21) is formed on the mold surface of the assist mold (5). ) to correspond to the external shape of the pressing protrusion (8).
is provided, so that the pressing protrusion (8) presses the peripheral portion of the ornament member (21) against the synthetic resin skin material (3).
1) is pressed onto the base material (11) on the receiving mold [11], and the synthetic resin skin material (31) forms a part that covers the ornament member (21) with the peripheral edge of the ornament member (21) as the boundary. It is divided into a part covering the base material (11), and airtightness is maintained so that the part covering the ornament member (21) can be lifted up by air blowing and the other parts can be properly vacuum formed. Synthetic resin skin material (31) and ornamental member (21) heated during vacuum forming
The contact with the raised part of the synthetic resin skin material (31
) is completely covered with the surface of the base material to which the raised ornament member (21) is partially attached, and is attached to the surface of the base material except for the ornament member (21). (21) An intermediate product is obtained in which a void remains between the two. Therefore, the assist mold (5) is opened to take out the intermediate product, and the base material (11) is placed on the lower surface plate (41) of the skin material welding device below the periphery of the ornament member (21) on the front side. ) to close the upper end opening of the lower surface plate (41). Then, at the same time or just before the upper surface plate (45) is lowered and the weld tooth pattern (48) comes into contact with the synthetic resin skin material (31), the air blowing pipe (44) is placed on the base material (11). Air of about 2 to 3 kg/cIa is blown into the cavity (46) formed between the substrate (1) and the recess of the upper surface plate (45) through the small hole (lla) in the synthetic resin base. The part of the skin material (31) above the ornament member (21) is lifted by this blown air and the suction force from the suction tube (49) as necessary, and in this state, a fossa frequency current is applied. A part of the synthetic resin skin material (31) is welded to the periphery of the ornament member (21) by the weld tooth mold (48) and cut along the weld line by the fusing blade (47), and the synthetic resin is The part of the decorative skin material (31) that covered the ornament member (21) is removed mechanically or on the spot using a pressure difference, or the part along the weld line is thinned and then removed in a subsequent process. The portion covering the ornament member (21) is removed. In this way, synthetic resin skin material (31
) to the peripheral edge of the ornament member (21), the weld tooth pattern (48) is attached to the synthetic resin skin material (
When contacting the synthetic resin skin material (31)
), at least the part adjacent to the weld line formation part rises above the surface of the ornament member (21) and does not come into contact with the raised part of this part, so high frequency heat generation and heat from the weld tooth pattern (48) are prevented. Since the effects of conduction or heat pressure are weakened, the whitening phenomenon that tends to occur along the weld line can be prevented, and in combination with the cooling effect of air blowing, the generation of excess metal can be reduced, resulting in superior products. We will be able to provide this. In addition, if the air blown from the air supply pipe (44) is supplied in a spiral shape around the entire circumference of the weld tooth mold (48), the cooling effect will be even better. In addition to the case of the above embodiment in which the synthetic resin skin material (31) did not come into contact with the portion covering the ornament member (21) during vacuum forming of the material (31), vacuum forming was performed by a well-known method. It is also possible to carry out only the welding process according to the present invention, or to carry out the welding process at the same time as vacuum forming.Furthermore, even when the welding process is carried out after obtaining an intermediate product, the weld tooth mold is attached to the lower surface plate. Alternatively, the welding operation may be performed on a base material that is set so that a synthetic resin skin material is provided on the lower side.

(Effects of the Invention) As is clear from the above description, when the synthetic resin skin material is welded to the periphery of the ornament member, the present invention is provided adjacent to the weld line forming portion of the synthetic resin skin material that covers the ornament member. The welding process was carried out while raising the parts of the ornament parts slightly, so the raised parts of the ornament parts along the weld lines were affected by the heat and whitening occurred, and the raised parts along the weld lines of the synthetic resin skin material. It eliminates the occurrence of excessive product defects due to excessive thickness in parts, and has the advantage of being mass-produced at low cost due to the simple process, and solves the problems of conventional manufacturing methods for this type of automobile interior material. As such, there are some extremely significant contributions to the development of the industry.

[Brief explanation of the drawing]

The drawings are explanatory diagrams of an embodiment of the method of the present invention, and FIG. 1 is a partially cutaway front view showing the skin material vacuum forming apparatus in an open state, and FIG.
The figure is a partially cutaway front view showing the mold in the clamped state, FIG. 3 is a partially cutaway front view showing an example of the skin material welding device, FIG.
FIG. 5 is a partially cutaway front view showing an enlarged welded and fused portion. (11): base material, (21) i ornament member,
(31): Synthetic resin skin material, (41): Lower surface plate, (4
4): Air blowing pipe, (45): Upper surface plate, (47)
: Fusion cutting blade, (48) : Weld tooth type. Patent applicant: Takashimaya Nichihatsu Kogyo Co., Ltd. Agent name: Akira Shima Buma
Tatsuo Watanuki
Fumi Yamamoto Figure 2 Figure 3 Figure 4 Procedural amendment (voluntary) 1. Indication of the case 1988 Patent Application No. 8589 2. Title of the invention Method for manufacturing automobile interior materials 3. Case of the person making the amendment Relationship with Patent Applicant Address: 1-14 Maehata, Oshima-cho, Toyota City, Aichi Prefecture, Agent 8, Contents of Amendment (1) Details as shown in the appendix. (2) As shown in the attached drawing. Description 1, Title of the Invention: Method and Apparatus for Manufacturing Automotive Interior Materials 2, Claim 1, A synthetic resin skin material is coated on the surface of a base material partially attached with an ornamental member. In the method for manufacturing an automobile interior material, the synthetic resin skin material is welded to the periphery of the ornament member, and a portion of the synthetic resin skin material that covers the ornament member is removed along the welding line. When welding to the peripheral edge of the member, the welding process is performed while at least the part of the synthetic resin skin material that covers the ornament member adjacent to the weld line forming part is slightly raised above the surface of the ornament member. A manufacturing method for automobile interior materials. 1. In 1 & Naka of ReI, which was made to be placed in the book of the ornament section, 3. Detailed explanation of the invention (industrial application field) The present invention relates to a method of manufacturing an automobile interior material that can easily mass-produce a good-looking automobile interior material that is coated with an ornament member such as the above and a synthetic resin skin material. (Prior art) A synthetic resin skin material is completely coated on the surface of a base material to which a raised ornament member such as carpet material is partially attached, and this is welded to the periphery of the ornament member. A method of manufacturing an automobile interior material in which a portion of the synthetic resin skin material covering the ornament member is removed along the welding line is widely known, such as in Japanese Patent Publication No. 59-24008. (Problems to be Solved by the Invention) However, in this type of conventionally known method, a synthetic resin skin material is coated on the surface of a base material to which an ornament member is partially attached. Ornament component l1
When welding to Ia, the molten synthetic resin skin material becomes excess material and bulges along the weld line, melting the naps of the ornament member and causing the hair to fall down, causing a so-called whitening phenomenon that appears white along the weld line. However, there was a problem in that it was not possible to obtain a good-looking product. (Means for Solving the Problems) The present invention solves the above-mentioned problems and allows synthetic resin skin materials to be applied to ornament members without causing any adverse effects such as whitening on the parts along the welding lines of the ornament members. This was completed with the aim of creating a manufacturing method for automotive interior materials that can be accurately and easily welded to the peripheral edge of a car to obtain a product with a good finish, and an equipment for manufacturing automotive interior materials that can be mass-produced at low cost. A synthetic resin skin material is applied to the surface of the partially applied base material and is welded to the periphery of the ornament member, and a portion of the synthetic resin skin material that covers the ornament member is applied along the welding line. In the manufacturing method for automobile interior materials, when the synthetic resin skin material is welded to the periphery of the ornament member, at least the part of the synthetic resin skin material that covers the ornament member adjacent to the weld line forming part is removed. The first invention is a method for manufacturing an automobile interior material, which is characterized in that the welding process is performed while the part is slightly raised above the surface of the ornament member, and a method for supporting a base material to which an ornament member is partially attached is provided. In an automobile interior material manufacturing apparatus in which a synthetic resin skin material coated on the surface of a base material is welded to the periphery of an ornament member with an upper surface plate that can be freely molded opposed to the board, the synthetic resin A second invention provides an apparatus for producing an automobile interior material, characterized in that it has one or both of an air blowing pipe and an air suction pipe as a mechanism for slightly lifting the surface skin material above the surface of an ornament member. That is. The base material used in the present invention may be of any material such as a synthetic resin board or a hard fiber board, and its structure may be a flat plate or a molded base material with irregularities. As an ornamental member to cover the surface of the material, we compared brushed fabrics such as moquette fabrics and carpet fabrics with a nap length of about 0.5 to 10 mm woven from chemical fibers, natural fibers, and other arbitrary fibers, as well as flocked fabrics. On the other hand, the synthetic resin skin material does not really matter as long as it can be welded by high frequency welding or other means, but generally it is a solid type made of thermoplastic synthetic resin. Alternatively, a laminated type sheet with a foam layer is used, and depending on the material, a synthetic resin adhesive layer for welding such as hot melt adhesive may be formed in advance on the back side of the part to be welded. . Furthermore, the welding means for welding the synthetic resin skin material to the periphery of the ornament member may be performed using an ultrasonic welder or any other welder in addition to the high frequency welder. In addition to blowing air into the back side of the synthetic resin skin material, the means for raising at least the part adjacent to the weld line formation part of the covering part slightly above the surface of the ornament member is also carried out by suctioning the synthetic resin skin material from the front side. Good too. (Example) Next, an example of the present invention will be described with reference to the skin material vacuum forming apparatus shown in FIGS. To explain the series of steps in detail, first, in Figures 1 and 2, +11 is a mold with a vacuum box (2) at the bottom, and a vacuum suction hole (3) on the mold surface. It is formed on a concave-convex mold surface with an air blowing pipe (4) connected to an air supply source communicated with a part of the mold surface. (5) is the receiving mold (
The assist mold (5) is arranged so as to be freely matched with the mold 11, and most of the mold surface of the assist mold (5) is opposite to the mold surface of the receiving mold CI+, A required cavity (6) is formed between a part of the receiving mold (1) and the mold surface of the receiving mold (1) at the time of mold matching, only in the part of the receiving mold (1) that faces the part where the ornament member is set. It has a sufficiently concave surface. Note that (7) in the figure slightly protrudes from the mold surface of the receiving mold (1) in order to maintain the balance of the base material and enhance the sealing effect when placing the base material on the mold surface of the receiving mold (11). (8) is a pressing protrusion provided on the mold surface of the assist mold 15) to correspond to the outer shape of the ornament member. (11) is a base material that is set on the mold surface of the receiving mold (1), and the base material (11) is made of a synthetic resin plate or coin fiberboard and is preformed into an uneven material and has small holes. (ll
A) is arranged in large numbers and adhesive is applied all over the surface, and part of the surface of the cough base material (11) has a raised length of about 0.5 to 10 mm and a softening point. An ornament member (21) made of polyester or polyamide fiber at a temperature of about 70 to 120°C is cut into a desired shape after being attached, or an ornament member (21) is cut into a desired shape and then attached to a bag. (31) is a synthetic resin skin material with a foam layer laminated on the back side as necessary,
The synthetic resin skin material (31) is made of vinyl chloride resin or plastic material (31).
It is made of vacuum-formed thermoplastic synthetic resin such as ethylene resin or thermoplastic polyester resin, and is made of leather or film material that can be welded.It is not melted but is sufficiently softened, for example, at an optimum temperature of about 100 to 200°C. It is placed between the receiving mold +11 and the assist mold (5) in a heated state. On the other hand, in FIG. 3, (41) is a lower surface plate for welding skin materials using high frequency, and the contour line of the receiving surface at the upper end corresponds to the outer shape of the ornament member (21). Lower surface plate (41
) is communicated with an air blowing pipe (44) connected to an air supply source. Additionally, above the lower surface plate (41) there is a fusing blade (47) that cuts the lower end.
Frame cylinder type upper surface plate (45) with weld tooth pattern (4 days) attached.
) are arranged so that they can be freely matched, and a suction pipe (49) connected to a vacuum source is communicated with the inner holding part of the upper surface plate (45), giving the shoe foot 1 (45) the function of a vacuum box. It is. Next, a specific example of manufacturing a door trim as an automobile interior material using the above-mentioned equipment and materials will be shown.
The base material (11) is made by three-dimensionally molding wood-based hard fiberboard into the shape of a door trim using a well-known molding device.The base material is a fabric piece made of polyester fiber with a softening point of 90° C. and has a nap of 2 lengths on the surface. The ornament member (21) is attached to the base material (11) by partially pasting it around the convex portion formed on the surface and trimming it into a desired shape.
Partially attached to the surface of. Then, the assist mold (5) is placed on the mold surface of the receiving mold which has been opened, and a vinyl chloride resin sheet with a foam layer is placed above it as a synthetic resin skin material (31) at 150°C. Set in a heated and softened state, the assist mold (5) and the receiving mold (11) are clamped.At this time, at the same time as the assist mold (5) contacts the base material (11), or just before that,
The ornamental member (21) of the synthetic resin skin material (31) is blown into the ornamental member (21) of the synthetic resin skin material (31) by blowing air at atmospheric pressure or higher, preferably 2 to 3 kg/aJ, through the air blowing pipe (4) which communicates with the mold surface of the receiving mold (11). The upper part is lifted up into the cavity (6) formed between the assist mold (5) and the receiving mold (1), while the vacuum box (2) connected to a vacuum source and the receiving mold +11 If the heated and softened synthetic resin skin material (31) is vacuum-formed on the surface of the base material through the vacuum suction hole (3) provided in the vacuum suction hole (3), the ornament member (21) will be formed on the mold surface of the assist mold (5). Since the pressing protrusion (8) is provided so as to correspond to the outer shape of the pressing protrusion (8), the pressing protrusion (8)
The peripheral part of the ornament member (21) is placed on the base material (11) on the mold (1) together with a part of the synthetic resin skin material (31).
), and the synthetic resin skin material (31) is pressed onto the ornament member (
It is divided into a part that covers the ornament member (21) and a part that covers the base material (11), and is airtight so that the part that covers the ornament member (21) can be lifted up by air blowing and the other parts can be vacuum-formed properly. is maintained, and the contact between the synthetic resin skin material (31) heated during vacuum forming and the raised portion of the ornament member (21) is cut off, and the synthetic resin skin material (31) A certain ornament member (21) is completely covered on the surface of the base material to which it is partially attached,
An intermediate product is obtained which is adhered to the surface of the base material except for the ornament member (21), but has a gap left between it and the ornament member (21). Therefore, the assist mold (5) is opened to take out the intermediate product, and the base material (11) is placed on the lower surface plate (41) of the skin material welding device below the periphery of the ornament member (21) on the front side. )
The upper end opening of the lower surface plate (41) is closed by placing it so that the receiving surface of the lower surface plate (41) is positioned. Then, the upper surface plate (45) is lowered and the weld tooth mold (4th) comes into contact with the synthetic resin skin material (31). At the same time or just before that, the F blowing pipe (4)
4) to the small hole (Ila) arranged in the base material (11)
2 to 6 kg/cd to the cavity (46) formed between the substrate (11) and the recess of the upper surface plate (45) through
The portion of the synthetic resin skin material (31) above the ornament member (21) is blown into the synthetic resin skin material (31) by the suction force from the blown air or the suction pipe (49), or by the blown air and the suction pipe (49). A part of the synthetic resin skin material (31) is lifted up using the suction force of
The ornamental member (31) is welded to the peripheral edge of the synthetic resin skin material (31) by welding with the weld tooth pattern (48) and cut along the welding line with the fusing blade (47).
Either remove the part that covered the ornament member (21) on the spot mechanically or using a pressure difference, or thin the part along the weld line and remove the part that covered the ornament member (21) in a later process. Remove. When welding a part of the synthetic resin skin material (31) to the peripheral edge of the ornament member (21) in this way, when the weld tooth pattern (48) comes into contact with the synthetic resin skin material (31), the synthetic resin skin material (31) At least the part of the resin skin material (31) adjacent to the weld line forming part rises above the surface of the ornament member (21) and does not come into contact with the nap of this part. Since the effects of high-frequency heat generation, heat conduction, and thermal pressure are weakened, the whitening phenomenon that tends to occur along the weld line can be prevented, and together with the cooling effect of air blowing, the generation of excess metal can be reduced. This means that we can provide superior products. In addition, the air supply pipe (44)
The cooling effect will be even better if the blown air is supplied spirally around the entire circumference of the weld tooth mold (48), and the synthetic resin skin material (31)
Except for the case of the above embodiment in which the synthetic resin skin material (31) did not come into contact with the part covering the ornament member (21) during vacuum forming, the vacuum forming was performed by a well-known method, and only welding was performed. may be performed by the method of the present invention, or the welding process may be performed simultaneously with vacuum forming.Furthermore, even when the welding process is performed after obtaining an intermediate product, a weld tooth pattern may be provided on the lower surface plate. The welding work may be performed on a base material set so that the synthetic resin skin material is on the side. (Effects of the Invention) As is clear from the above description, the present invention provides a welding line forming portion of a portion of the synthetic resin skin material that covers the ornament member when the synthetic resin skin material is attached to the peripheral edge of the ornament member. Since the welding process is performed while slightly lifting the part that contacts the VA, it is possible to prevent the whitening phenomenon caused by excess material that occurs along the weld line of the ornament component, resulting in a product with a good appearance, and the equipment is simple. Therefore, it has the advantage of being able to be mass-produced at a low cost, and as it solves the problems of the conventional manufacturing method for this type of automobile interior material, it will greatly contribute to the development of the industry. 4. Brief description of the drawings Fig. 1 is a partially cutaway front view showing an embodiment of the device of the present invention, Figs. 2 and 3 are partially cutaway front views showing enlarged welded and welded parts, and Fig. 4 5 is a partially cutaway front view showing an example of an apparatus used in the vacuum forming process, which is a pre-process of the method of the present invention, in a mold open state, and FIG. 5 is a partially cutaway front view showing the same in a mold closed state. (11): Base material, (21): Ornament member, (3
1): Synthetic resin skin material, (41): Lower surface plate, (44)
: Air blowing pipe, (45): Upper surface plate, (47): Fusing blade, (48): Weld tooth pattern, (49): Suction pipe. Patent applicant: Takashimaya Nichihatsu Kogyo Co., Ltd. Agent name: Akira Shima Buma
Tatsu Yuoka Watanuki
Fumi Yamamoto jl1Figure 2

Claims (1)

[Claims] A synthetic resin skin material is applied to the surface of the base material to which the raised ornament member is partially attached, and this is welded to the periphery of the ornament member, and the synthetic resin skin material is covered with the ornament member. In a manufacturing method for automobile interior materials in which a portion of the synthetic resin skin material is removed along a welding line, when welding the synthetic resin skin material to the periphery of the ornament member, at least the part of the synthetic resin skin material that covers the ornament member is welded. A method for manufacturing an automobile interior material, characterized in that a welding process is performed while a portion adjacent to a line forming portion is slightly raised above the surface of the ornament member.