JP2010023245A - Upholstery decorative molded article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an upholstery decorative molded article that can reduce the quantity of the upholstery stuck to the rear face of a base material and that can prevent wrinkles from being generated in an end edge region in the end face of the side part situated on the decorative side of the side part. <P>SOLUTION: The upholstery decorative molded article 1 in which an injection molded base material 2 and a projection 9 are covered with an upholstery 8 is such that, in the rear face side 4 of the base material 2, the end face 6 of the side part 5 and the projection 9 erected on the end face 6 is covered. The projection 9 is erected on the end face 6 of the side part 5 in a corner section 7 and in a part receded by a drawing distance L from the corner section 7. The excess portion of the upholstery 8 produced in company with a fold can be absorbed by covering the outer periphery of the projection 9. Also, at least on the end face 6, in a region from the outer face side to the drawing distance L, the generation of wrinkles by the excess portion of the upholstery 8 can be prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a skin-decorated molded article obtained by coating the skin of the decorative sheet material on the decorative side of the base material, and more specifically, when the decorative side of the base material is coated with a flat-cut skin. Further, the present invention relates to a skin-decorated molded article that can prevent wrinkles from being generated on a skin that is folded while being wound around a corner portion.

  2. Description of the Related Art Conventionally, for example, as a car interior part, a skin decorative molded product is used in which a decorative surface of a base material molded with a synthetic resin material is covered with a skin made of a skin decorative sheet material. Usually, a resin sheet having a decorative surface such as wood grain or leather, a resin sheet in which a foamed resin material is integrated, a cloth, a non-woven fabric, or the like is used as a skin made of a decorative sheet material. By covering the decorative side of the molded product with the above-described skin, a skin-decorated molded product having a good appearance design can be obtained as a final product.

  In general, as a manufacturing method for manufacturing this type of skin-decorated molded article, the skin cut in a plane is heat-softened, and the periphery of the heat-softened skin is clamped to clamp the skin on the surface of the substrate. The contact is made while gradually applying tension from a portion closer to the center, and the substrate is covered toward the side surface side of the substrate surface. And it can coat | cover with a uniform state with respect to the whole surface of a base material by coat | covering, applying vacuum suction from the back surface side of a skin.

  By producing a skin-decorated molded article by such a production method, it is possible to prevent the occurrence of a bulging portion in which the thickness of the skin has changed on a part of the substrate surface. It is possible to reliably coat the skin having a uniform thickness over the entire surface.

  In addition, local thinning or breakage of the outer skin can be prevented from occurring at the central molding site on the surface of the base material or the gently surrounding winding part having a substantially straight shape. However, the skin that is folded back on the back surface side of the base material is folded back toward the back surface side of the base material, so that the skin is greatly expanded and spread around the corner portions.

  For this reason, the skin that is folded back from the corner to the back side of the base material is folded back to the back side of the base material while narrowing the slackness of the epidermis that has greatly expanded and spread around the corner part in the shape of a ridge. It will be. That is, by forming a wrinkle on the skin at the corner, the skin can be folded back from the corner to the back side of the substrate. However, in the vicinity of the corner portion of the skin decorative molded product, a floating state bulging to the outside due to the generation of wrinkles is formed.

  As a result, for example, when a skin decorative molded product as an interior part of an automobile is attached to a dashboard or the like, the corner portion of the skin decorative molded product floats to the outside due to wrinkles generated in the corner portion, and the dashboard It is attached in a state where a slight gap is formed between the attachment surface of the board or the like. For this reason, the appearance on the external appearance in the attachment part of a skin decoration molded product will be impaired greatly.

  As a means for preventing wrinkles at the corners, methods for attaching a skin (see Patent Document 1), a skin material mounting structure for a box-shaped member (see Patent Document 2), and the like have been proposed.

  As a conventional example 1 in the present invention, the method of attaching the skin described in Patent Document 1 is shown in FIG. 19 as a perspective view of the corner portion 1c of the box 1. As shown in FIG. 19, the box 41 is formed in a cover lid shape in which a side wall 44 is provided around the bottom plate 41b, and the upper surface is open. On the inner surface of the side wall 44 in the corner portion 41c of the box body 41, a rib 45 standing upright to the bottom plate 41b is integrally formed with the side wall 44.

  In the method of attaching the skin described in Patent Document 1, the adhesive 43 is applied to the surface 41a, the side wall 44, and the rib 45 of the box 41, and the box 41 is set in a compression mold (upper mold). The skin 42 cut in a plane is set in a compression mold (lower mold). After closing the mold, the box body surface 41a and the outer skin 42 are pressure-bonded by pressure bonding, and both are adhesively bonded. Thereafter, after the mold is opened and demolded, the skin edge 46 is folded back to the back side of the box 41 so that the skin edge 46 is covered on the rib 45.

  In the method of attaching the skin described in Patent Document 1, the ribs 45 are provided in the corner portion 41c on the back side of the box 41, thereby suppressing wrinkles of the skin 42 generated in the corner portion 41c. . The rib 45 is preferably formed in a pyramid shape or a semiconical shape. Further, by forming the rib 45 in a conical shape spreading toward the bottom plate 41b, when covering the box body 41 with the skin 42 cut in a plane, the surplus portion 47 at the end of the skin 42, The ribs 45 can be absorbed more effectively.

  The skin material mounting structure for a box-shaped member described in Patent Document 2 is shown as Conventional Example 2 in the present invention, and a perspective view of the skin material mounting structure is shown in FIG. When attaching the skin material 52 cut in a plane as shown in FIG. 20 to the box-like member 51, the skin material 52 folded back on the back side of the box-like member 51 is left in the corner portion 53. In order to prevent this, the invention of Patent Document 2 is configured such that the plate thickness L2 at the corner portion 53 of the vertical wall portions 54 and 55 is thinner than the plate thickness L1 at other portions.

By making the plate thickness L2 at the corner portion 53 of the vertical wall portions 54, 55 thin, the length of the attachment portion is increased when the skin material 52 is folded and attached around the corner portions 54, 55. Can be configured. By configuring the corner portion 53 in this way, it is possible to prevent the skin material 52 from remaining in the corner portion 53, and in the corner portion 53, the so-called saddle state remains in a state where the skin material 52 is doubled. This prevents the corner portion 53 from being covered.
Japanese Patent Laid-Open No. 10-24493 JP-A-7-81487

  In the invention in Patent Document 1, the skin 42 is covered on the rib 45 erected on the side wall 44 of the corner portion 41 c of the box 41, so that the surplus portion of the skin 42 is absorbed by the surface area of the rib 45. Yes. However, the folding of the skin edge 46 toward the back side of the box is performed after the mold is opened and the mold is removed. Therefore, the crimping operation between the box surface and the skin 42 and the folding operation of the skin edge 46 to the box back side cannot be performed simultaneously.

  Therefore, in the invention in Patent Document 1, the cover work on the box surface and the work of turning the skin edge 46 back to the box back side are performed in separate steps. For this reason, it is difficult to configure a work machine that automates the covering work and the folding work of the skin 42 and performs them simultaneously. Thus, in the invention in Patent Document 1, since the number of work steps cannot be reduced, it is difficult to suppress an increase in the manufacturing cost of the skin decorative molded product.

  Further, the surplus portion of the epidermis 42 generated by folding the epidermis 42 is configured to be absorbed by the ribs 45, but in the region between the rib 45 formation site and the end face of the side wall 44, the epidermis It is not configured to absorb 42 surplus parts. For this reason, wrinkles are generated on the end face of the side wall 44 as usual.

  And when the skin decoration molded product comprised by invention of patent document 1 is attached to a dashboard etc., for example, if a wrinkle has occurred on the end face of the side wall 44 used as a contact surface, dashboard etc. Even if there is a slight gap between the mounting surface and the mounting surface, a gap will be formed. If even a slight gap is formed between the skin-decorated molded product and its mounting surface, a part of the attached skin-decorated molded product will be lifted, resulting in poor appearance.

  In addition, it was possible to prevent generation of wrinkles on the end face of the side wall 44 by strongly applying a pulling force to the skin 42 part folded back on the back side of the box body 41 rather than the end face of the side wall 44. Even so, in order to apply a strong tensile force to the skin 42, the skin 42 must be adhered to at least the formation site of the rib 45 formed on the back side of the side wall 44.

  For this reason, as the skin 42 for producing the skin decorative molded product, in addition to the area necessary for covering the surface of the skin decorative molded product, wrinkles are prevented from occurring on the end surface of the side wall 44. An area is needed to keep it. As an area for preventing generation | occurrence | production of the wrinkle in this end surface, it is comprised in the area | region which spreads to the outer peripheral side of an area required in order to coat | cover the surface of a skin decoration molded product.

  Therefore, a large area is required as an area for preventing wrinkles from occurring on the end face of the side wall 44. Thus, as the skin 42, a larger area is required in addition to the area covering the surface of the skin decorative molded product, and these areas must be adhered to the skin decorative molded product. . As a result, resources are wasted.

  In the invention in Patent Document 2, the occurrence of wrinkles in the corner portion 53 can be prevented by forming the plate thickness L2 at the corner portion 53 of the vertical wall portions 54 and 55 thin. In addition, as the thickness of the end surfaces of the vertical wall portions 54 and 55 in the corner portion 53, that is, the plate thickness at the end surfaces of the vertical wall portions 54 and 55 in the corner portion 53 is reduced, the vertical wall in the corner portion 53 It is possible to prevent wrinkles from occurring on the end faces of the portions 54 and 55.

  However, when the plate thickness at the end surfaces of the vertical wall portions 54 and 55 in the corner portion 53 is thinned, the closer the portion is to the corner portion 53, the less the sharp fold line is given to the skin material 52, and the corner portion 53 A sharp fold line is given to the part of the general part (part of the plate thickness L1) that is separated from the part. As a result, the folding line of the skin material 52 becomes uneven, and the appearance is deteriorated.

  Therefore, in the present invention, in a skin-decorated molded article in which a skin is coated on a base material having at least one corner on the periphery, generation of wrinkles due to the skin on the end surface of the side surface provided on the periphery An object of the present invention is to provide a skin-decorated molded article with improved appearance. In particular, it is possible to reduce the amount of the skin to be adhered to the back side of the base material, and wrinkles are generated in the region on the edge side of the end surface of the side surface portion located on the decoration side of the side surface portion. An object of the present invention is to provide a skin-decorated molded product that can prevent the above.

The object of the present invention can be achieved by the inventions described in claims 1 to 7.
That is, the skin decorative molded product according to the present invention comprises at least one or more corners on the periphery, a base material provided with a decorative side and a back side,
It is a part on the corner part side on the end face of the side part provided on the peripheral edge of the base material, and is erected on a part retracted from the edge of the end face located on the decoration side of the side part Protrusions,
Covering the decorative side of the base material, folding back so as to be wound around the back surface side of the base material, and covering the end surface of the side surface portion and the protrusions, It is a major feature.

  Further, in the skin-decorated molded product according to the present invention, the protrusion is erected at a portion retracted from the edge of the end surface located on the decorative side of the side surface by a distance of half or more of the thickness of the end surface. Is a major feature.

Furthermore, in the skin decorative molded product according to the present invention, the main feature is that the end surface portion of the side surface portion arranged on both side surfaces of the protrusion is formed as a recessed portion that is one step lower.
Furthermore, in the skin decorative molded product according to the present invention, the main feature is that the protrusions are formed as ribs.
Further, in the skin decorative molded product according to the present invention, the rib is formed to have a tapered inclined surface, and the inclined surface is formed as an inclined surface that is inclined downward toward the decorative side of the side surface portion. The main feature is being made.

Furthermore, in the skin decorative molded product according to the present invention, the main feature is that the protrusion covering the skin is crimped from above.
Furthermore, in the skin decorative molded product according to the present invention, the main feature is that the protrusions are erected on the corners having a substantially L shape in plan view.

  In the present invention, a protrusion is erected on the end surface of the side surface portion provided on the peripheral edge in the skin decorative molded product in which the decorative side of the substrate is covered with the skin. In addition, the protrusions erected on the end surface of the side surface part are erected on the corner portion side portion on the end surface of the side surface part, and the end located on the decorative side of the side surface part among the end edges of the end surface Stands up at the part retracted from the edge.

  And the skin covering the decorative side of the base material is folded back so as to be wound around the back side of the base material, and the folded skin is stuck to the base material in a state of covering at least the end face of the side surface portion and the protrusion. It becomes the composition which is done.

  As described above, since the present invention is configured, even if the decoration side of the base material is coated and decorated by using vacuum forming or vacuum / pressure forming, it is provided on the periphery of the base material. The epidermis can be adhered without generating wrinkles on the end face of the side surface. In other words, the protrusions erected on the end surface of the side surface portion can absorb the slackness of the epidermis that occurs at the corner portion, so that wrinkles can be prevented from occurring on the end surface of the side surface portion.

  Furthermore, since the protrusion is erected on the end surface of the end surface that is retracted from the edge located on the decoration side of the side surface portion, it is possible to reliably prevent wrinkles from occurring on the end surface located on the decoration side. I can keep it. Therefore, at the corner, at least from the edge of the end face located on the decoration side to the protrusion and on the end face of the side face excluding the corner, the skin is used as a base material without generating wrinkles. On the other hand, it can be pasted.

  Thereby, the epidermis wound around the back side of the base material and then folded may be pasted on at least the end surface of the side surface portion. That is, the skin can be adhered to the substrate with as little area as possible without wasting the skin. Moreover, when the skin decoration molded product according to the present invention is attached to a desired member, the peripheral portion of the skin decoration molded product attached to the desired member can be prevented from floating, and the skin decoration molded product. It is possible to greatly improve the appearance design when the is attached.

  In particular, the protrusion is formed on the inner side of the part alignment position with the counterpart part to which the skin decorative molded product is set, which is set on the end surface of the side surface portion of the skin decorative molded product. Can be accommodated in the counterpart component without contacting the counterpart component.

  Moreover, the affixing operation to the decorative portion and the side surface portion of the base material and the affixing operation to the end surface of the side surface portion can be simultaneously performed while folding the base material to the back surface side. As a result, the work of sticking the skin to the decorative part and the side part of the base material and the work of sticking the skin to the end face of the side part while performing the folding back to the back side of the base material are performed by automatic pasting by a machine. It is possible to reduce the manufacturing cost and the manufacturing time when manufacturing the skin decorative molded product.

In the skin-decorated molded product of the present invention, a protrusion is erected on the end surface of the side surface portion from the edge located on the decorative side of the side surface portion, at a site retracted by a distance of more than half the thickness of the end surface. Can do.
By configuring in this way, in the corner portion, at least half of the thickness of the end face from the edge of the end face located on the decoration side, without generating wrinkles The skin can be attached to the base material.

  Accordingly, in the corner portion, at least in the region half the thickness of the end face from the edge of the end face located on the decoration side, the epidermis with respect to the end face on the decoration side in a state where wrinkles are not generated. You can paste it exactly. In addition, since the wrinkles are hardly generated on the end surfaces of the side surfaces excluding the corner portions, it is possible to attach the epidermis without causing wrinkles.

  Since it can comprise in this way, the part alignment position with the other party which attaches a skin decorative molded product can be freely set in the area | region to the half of the thickness of an end surface. Therefore, even when attaching the skin decoration molded product to a desired member, keep the skin decoration molded product from being attached while the peripheral edge of the skin decoration molded product is raised. It is possible to greatly improve the appearance design when the skin decorative molded product is attached.

In the skin-decorated molded product of the present invention, the end surface portion of the side surface portion arranged on both side surfaces of the protrusion can be formed as a recessed portion that is one step lower.
By configuring in this way, the surplus portion of the epidermis that is generated when the epidermis is folded back can be along the protrusion and along the recess. That is, it is possible to absorb the surplus portion of the epidermis with the concavo-convex surface formed by the protrusion and the concave portion, and reliably prevent wrinkles.

In the skin decorative molded product of the present invention, the protrusions can be formed as ribs.
Since the generation position of wrinkles can be guided along the ribs, wrinkles can be reliably prevented from occurring within a range that is separated from the corner portion of the base material by a predetermined distance. And the range which is spaced apart from the corner by a predetermined distance can be covered with a skin that is affixed to the base material.

  In the skin decorative molded product according to the present invention, the protrusion can be formed as a rib and can be formed as a rib having a tapered inclined surface. And it can form so that the inclined surface formed in the rib may become an inclined surface inclined downward toward the decoration side of a side part.

  In this way, by setting the rib having the inclined surface upright on the end face on the decoration side, the surplus portion of the skin can be guided by the rib, and in a region separated from the corner by a predetermined distance. The affixed state of the epidermis can be kept in a state of being affixed to a substrate having no wrinkles.

In the skin decorative molded product according to the present invention, the protrusion covering the skin can be crimped from above.
By caulking the protrusion together with the epidermis, the epidermis can be fixed to the base material, the epidermis can be prevented from being displaced, and the tension applied to the epidermis can be maintained. In addition, since the height of the protrusion can be reduced, the amount of protrusion from the end face of the side surface portion can be reduced. In particular, when the end surface portion of the side surface portion disposed on both side surfaces of the protrusion is formed as a one-step lower recess, the protrusion material fluidized by caulking is disposed on both side surfaces of the protrusion. Can flow into the recessed portion. And the height position to the surface of the epidermis crimped with the protrusion can be configured to be a height position substantially the same as or lower than the height position on the end face of the side surface portion.

  Since it can comprise in this way, a skin decorating molded product can be manufactured, without producing a wrinkle in the corner part of a side part. Moreover, it is not necessary to form the recessed part which accommodates the processus | protrusion of an outer skin decorative molded product in the member side which attaches an outer skin decorative molded product.

In the skin-decorated molded product according to the present invention, protrusions can be erected at corners that are substantially L-shaped in plan view.
Even when the corner portion having a substantially L shape in a plan view is formed on the base material, the epidermis is folded back at the corner portion by providing a protrusion on the corner portion. It is possible to make the surplus part that occurs sometimes follow the projection. And it can prevent that a wrinkle generate | occur | produces around the corner part in the back surface side of a base material.

  With this configuration, even if the dimension of the edge portion of the door member or decorative member is small, that is, the thickness of the end surface of the side surface portion is thin, the attachment of the skin on the end surface of the side surface portion, This can be done simultaneously with coating the decorative side of the substrate with a skin.

  Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings. As a skin decoration molded product according to the present invention, in addition to the configuration described below, if it is a shape and arrangement configuration that can solve the problems of the present invention, the configuration is a skin decorative molded product according to the present invention. Can be adopted as. Therefore, the present invention is not limited to the configuration described below, and various modifications are possible.

  FIG. 1 shows a configuration example in which a skin decorative molded product 1 which is a representative embodiment of the present invention is attached as a finisher 12 in an instrument panel 11 of an automobile. The surface side that is the decorative side of the finisher 12 is covered with the skin 8. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a perspective view in which a part of the finisher 12 which is the skin decorative molded product 1 is partially broken.

  As shown in FIGS. 2 and 3, the skin decorative molded product 1 is composed of an injection-molded base material 2 and projections 9 and a skin 8 which will be described later, and is a surface on the decorative side of the base material 2. The end surface 6 of the side surface portion 5 on the side of the portion 3 and the back surface portion 4 is covered with a skin 8. Further, the skin 8 is also covered on the protrusion 9 erected on the corner portion 7. The base material 2 and the protrusions 9 are integrally formed by injection molding.

  In the following, a configuration example in which the entire decoration side is covered with the skin 8 will be described. However, as the skin 8, the entire decoration side may be covered, or a part of the decoration side may be covered. It can also be left.

  Materials constituting the base material 2 and the protrusions 9 described later include ABS resin (acrylonitrile butadiene styrene copolymer synthetic resin), PP resin (polypropylene resin), PP composite resin, PC resin (polycarbonate resin), PC / ABS resin, etc. Can be used.

  The material constituting the skin 8 is a resin sheet, cloth, nonwoven fabric, etc. made of urethane resin, vinyl chloride resin, PET resin (polyethylene terephthalate resin), PMMA resin (polymethyl methacrylate resin, usually called acrylic resin), etc. Can be used. In particular, when a resin sheet is used as the skin, the wrinkles disappear by heating and stretching the resin sheet, which is preferable.

  Moreover, the thing of the structure which integrated and laminated | stacked foamed resin materials, such as PPF (polypropylene foam) and PEF (polyethylene foam), to these materials can also be used. On the surface of the skin 8 made of such a material, a decorative surface such as wood grain or leather can be formed.

The back surface of the skin 8 can be coated in advance with an adhesive or an adhesive material. Alternatively, an adhesive, a pressure-sensitive adhesive, or the like can be applied to the areas corresponding to the folded portion 8a of the skin 8 on the surface side of the base material 2 that covers the skin 8 and the back surface side of the base material 2.
In the following description, a configuration example in which the back surface of the skin 8 is coated with an adhesive will be described.

As shown in FIG. 3, a protrusion 9 is erected on the end surface 6 of the side surface portion 5 constituting the corner portion 7 on the peripheral edge of the base material 2, and the protrusion 9 is integrally formed with the base material 2. Is formed. The portion where the projection 9 is erected is the corner portion 7 side of the end surface 6 of the side surface portion 5, and the projection 9 is from the edge 6a of the end surface 6 that becomes the boundary with the decoration side of the base material 2. , It is erected at a site that is retracted by a retracting distance L.
Further, the skin 8 is stuck to the end surface 6 in a state where the width of the end surface 6 of the side surface portion 5 is folded back.

  Next, about the manufacturing process of the skin decoration molded product 1 concerning this invention, shaping | molding using the vacuum forming machine 30 is demonstrated using FIGS. FIG. 4 shows a state before the skin 8 is bonded to the substrate 2 in the form of a cross-sectional view of the main part. The configuration around the outer skin 8 other than that shown in FIG. 4 is the same as that shown in FIG. 4 and is not shown.

The vacuum forming machine 30 includes a receiving jig 16, a lifting table 17 on which the receiving jig 16 is placed, and a clamp 15 that holds the periphery of the skin 8. The periphery of the skin 8 that has been heated and softened is gripped by a clamp 15.
4 shows the steam rising from the upper surface side of the skin 8 that has been heated and softened, but the illustration of the steam rising from the upper surface side of the skin 8 is omitted in the drawings after FIG. ing.

The base material 2 on which the skin 8 is coated is supported and fixed on the receiving jig 16 so that the surface side thereof faces the skin 8. That is, the concave portion side that is the back surface side of the base material 2 is placed on the receiving jig 16, and the convex shape portion side that is the decoration side of the base material 2 is disposed so as to face the skin 8. .
The configuration of the base material 2 is not limited to the present embodiment, and may be, for example, a flat shape in which the back surface side is not configured as a concave portion.

  The protrusion 9 is disposed so as to face downward in FIG. 4 at a portion on the end surface 6 of the side surface portion 5 drawn from the corner portion 7 by the drawing distance L. A suction hole 16a is formed in the receiving jig 16 that supports and fixes the base material 2. One end portion of the suction hole 16a communicates with the suction port 17a formed in the lifting table 17 supporting the receiving jig 16, and the other end portion of the suction hole 16a becomes the suction opening 16b. It opens toward the back side.

  In addition, when the back surface side of the base material 2 has a flat shape, the portion where the protrusion 9 is erected is formed in a portion that is pulled in from the corner portion 7 on the flat back surface side by a pull-in distance L. I can keep it. And as the pull-in distance L, the part alignment position in the skin body decorative molded product, which will be described later with reference to FIG. 12, that is, the part alignment position with respect to the counterpart part to which the skin body decorative molded product is attached, It can be configured as a distance that is closer to the center side of the substrate 2.

  As shown in FIG. 5, when the elevating table 17 rises toward the skin 8, or when the skin 8 gripped by the clamp 15 descends toward the base material 2, it is heated and softened. The skin 8 abuts on the upper surface side portion of the surface portion 3 of the base material 2 and is stretched along the surface portion 3 of the base material 2 while gradually applying tension, and wraps around the surface portion 3. Thus, when the clamp 15 holding the skin 8 comes into contact with the lifting table 17, the lifting of the lifting table 17 or the lowering of the clamp 15 is stopped.

  At this time, since the surface portion 3 of the base material 2 can be wrapped while applying tension to the softened skin 8, air bubbles are interposed between the skin 8 and the surface portion 3 of the base material 2. Without covering, the skin 8 can be coated in a state of being in close contact with the surface portion 3 of the substrate 2.

  When the clamp 15 comes into contact with the lifting table 17, the periphery of the substrate 2 can be sealed by the skin 8. After the periphery of the base material 2 is sealed by the skin 8, a vacuum device (not shown) communicated with the suction port 17a formed in the lifting table 17 is operated. That is, vacuum forming is performed on the skin 8.

  Note that the vacuum forming can be started from a state before the clamp 15 contacts the lifting table 17 as necessary. Further, the vacuum pressure forming can be performed by increasing the vacuum pressure for performing the vacuum forming.

  As shown in FIG. 6, by performing vacuum forming, the space around the base material 2 sealed by the skin 8 is depressurized, and the skin 8 is in close contact with the entire surface portion 3 of the base material 2. The coating will continue. Then, the end surface 6 of the side surface portion 5 disposed on the peripheral edge of the substrate 2 and the protrusions 9 standing on the end surface 6 are also covered while maintaining a close contact state.

  In this way, by vacuuming the skin 8, the skin 8 can be folded and covered while being wound around the back surface 4 side of the substrate 2 while applying tension to the skin 8. In addition, at this time, since tension is continuously applied to the epidermis 8, the epidermis 8 can be firmly attached to the end surface 6 of the side surface portion 5, and the slack produced in the epidermis 8 by the surface area of the protrusion 9 can be absorbed.

  In particular, since the protrusion 9 is formed at a portion retracted from the edge 6a on the surface portion 3 side in the end surface 6 by a retracting distance L, the protrusion 9 is erected from the edge 6a in the corner portion 7. In the region on the end face 6 up to the site, the epidermis 8 is adhered to the end face 6 in a close contact state.

  That is, the surface 8 of the base material 2 is adhered to the entire surface 3 of the base material 2 while the skin 8 is adhered and coated, and the end surface 6 of the side surface 5 and the protrusion 9 erected on the end surface 6 are adhered to the surface 8 It is possible to perform the work of attaching while covering and a series of work by one work machine. Thereby, reduction of the manufacturing time and manufacturing cost of a skin body decoration molded product can be aimed at.

Next, the post-finishing process will be described with reference to FIGS.
FIG. 7 shows a state where the base material 2 on which the skin 8 is decorated is removed from the vacuum forming machine 30. 6 and 7 show a state in which the skin 8 does not cover all the portions on the upper surface of the protrusion 9, the vacuum pressure in the vacuum forming machine 30 is increased to such an extent that the skin 8 does not break, or the skin 8 For example, a material having high spreadability can be used so that substantially the entire surface can be covered with the skin 8 over the upper surface of the protrusion 9.

  As shown in FIG. 8, the base material 2 coated with the skin 8 removed from the vacuum forming machine 30 is placed on the support base 18 so that the skin 8 is on the lower side. Trim the excess part of the epidermis 8 by 20. The portion of the skin 8 remaining on the substrate 2 side after trimming covers at least part of the upper surface of the protrusion 9 and the portion covering the surface portion 3 of the substrate 2 and the end surface 6 of the side surface portion 5. It is a part that. The remaining part of the skin 8 will be removed from the substrate 2 by trimming.

  Thus, on the back surface side of the base material 2, the covered skin 8 remains only in the width portion of the end surface 6 of the side surface portion 5, and only the minimum necessary portion can be left. For this reason, it is possible to manufacture a skin-decorated molded article in a state in which no excess portion is left on the back side of the base material 2 in the skin 8.

  9 to 11 show a procedure for caulking the protrusion 9 erected on the corner portion 7 together with the skin 8 by the caulking tool 21. FIG. 9 shows a state of a preparation stage in which the caulking tool 21 is used to caulk the protrusion 9 in the corner portion 7 together with the skin 8. The base material 2 is placed on the support base 18 continuously from the trimmed state. FIG. 10 shows a state in which the tip of the crimping tool 21 is crimped by coming into contact with the protrusion 9 erected on the corner portion 8. FIG. 11 shows a state where the crimping tool 21 has been crimped and the crimping tool 21 is moved away from the base material 2.

  FIG. 12 is a partial perspective view showing the situation of the corner portion 7 of the base material 2 after the caulking. As shown in FIG. 12, the crimped protrusion 9 has a low height as shown by the crimped portion 22 and is spread in the left-right direction. Since the standing position of the protrusion 9 is formed at a site that is a fixed pull-in distance L away from the edge 6a of the end surface 6, the crimped portion 22 can be formed at a site that is separated from the edge 6a. In addition, generation of wrinkles in the epidermis 8 is prevented between the edge 6a of the end face 6 and the crimped portion 22.

  Further, the part alignment position 23 in the skin body decorative molded product, that is, the part alignment position 23 with respect to the counterpart part to which the skin body decorative molded product is attached was the position indicated by the alternate long and short dash line. However, the caulking portion 22 can be positioned inside the component alignment position 23. Thereby, even when the skin-decorated decorative molded product is attached to the counterpart part, no wrinkles are generated in the part outside the part alignment position 23, so that no problem occurs in the appearance design.

Next, the case where the protrusion 9 is caulked with the caulking tool 21 will be described with reference to FIGS. 14 is a cross-sectional view taken along line BB in FIG. 12, and FIG. 13 shows a state before the protrusion 9 is caulked.
As the caulking tool 21, a configuration example having a horn 21a that performs ultrasonic vibration is shown. However, as the caulking tool, a thermal caulking tool as described in the above-described conventional example 3 may be used. it can.

  As shown in FIG. 13, the synthetic resin constituting the protrusion 9 can be melted by bringing the horn 21 a performing ultrasonic vibration into contact with the protrusion 9. Thereafter, by resolidifying the molten resin, it is possible to obtain a shape that matches the shape of the horn tip. At the same time, the skin 8 covering the protrusions 9 can be fixed in accordance with re-solidification of the molten resin.

  When the horn 21a that performs ultrasonic vibration is used as the crimping tool 21, the time for crimping can be shortened, and the strength of the crimped crimped portion 22 can be increased. In addition, there are advantages such that there is no bad odor at the time of melting, and the appearance shape can be finished beautifully because the threading state does not occur when the caulking tool 21 is pulled up.

  The configuration of the second embodiment according to the present invention is shown in FIGS. In the second embodiment, a configuration example in which the shape of the protrusion is made different is shown. Other configurations other than the shape of the protrusion are the same as those in the first embodiment. Therefore, about the structure similar to Example 1, the description about the member is abbreviate | omitted by using the member code | symbol used in Example 1. FIG.

  FIG. 15 shows an example in which protrusions are formed by the ribs 25. The ribs 25 are configured to have a tapered inclined surface 25a, and are arranged in a diagonal direction in the corner portion 7 of the substrate 2. Further, the inclined surface 25a is formed as an inclined surface inclined downward toward the apex direction in the corner portion 7.

  By forming the ribs 25 in this way, the outer skin 8 (see Example 1) folded back so as to be wound around the back surface side of the base material 2 can be used to remove excess portions that are widened by the corners 7. It can be absorbed by 25 outer peripheral surfaces. That is, since the skin 8 can be pasted along the outer peripheral surface of the rib 25, wrinkles of the skin 8 can be prevented from occurring at least in the region between the rib 25 and the apex of the corner portion 7. .

  In particular, with respect to the skin 8 disposed between the apex of the corner portion 7 and the rib 25, tension can be applied along the inclined surface 25a of the rib 25, so the apex of the corner portion 7 and the rib 25 The skin 8 is attached in a state of being closely attached to the end surface 6 of the side surface portion 5. In addition, if the part alignment position 23 is set between the apex of the corner portion 7 and the rib 25, the rib 25 interferes with the attachment when attaching the skin-decorated molded product to the counterpart part. There is nothing.

  The ribs 25 may be formed as a plurality of ribs 25 as shown in FIG. When formed as a plurality of ribs 25, as shown in FIG. 16, one end side of the plurality of ribs 25 is arranged close to the main part of the fan and becomes the apex of the corner portion 7. It is desirable to dispose the other end side of the plurality of ribs 25 so as to expand.

  By arranging the plurality of ribs 25 in such an arrangement, the slackness of the skin 8 between the apex of the corner 7 and the ribs 25 can be reliably absorbed. And, it becomes possible to configure the pull-in distance L, which is the distance between the apex of the corner portion 7 and the edge of the rib 25, to be long, and widen the region on the end surface 6 where the wrinkles of the skin 8 are not generated. Can be configured. On the contrary, since the area on the end face 6 where the wrinkles of the skin 8 are not generated can be configured widely, even if the width of the end face 6 is reduced, the area where the wrinkles of the skin 8 are not generated It can be obtained on the end face 6.

  As shown in FIG. 17, recesses 27 can be formed in the end surface 6 on both side surfaces of the rib 25 so as to surround both side surfaces of the rib 25. The recess 27 can absorb the surplus portion of the skin 8 by the outer surface of the rib 25 and the inner surface of the recess 27 when the skin 8 is folded back to the back surface side of the substrate 2. Further, when caulking is performed on the ribs 25, the ribs 25 can be used as recesses that allow the constituent members of the ribs 25 to escape.

  When the rib 25 is crimped, the epidermis 8 covering the upper surface of the rib 25 is also caulked together, and the height of the upper surface position of the epidermis 8 after the caulking is performed It may be configured to be a height position that is flush with the height position, or may be configured to be slightly lower than the height position of the adjacent end surface 6.

  The shape of the protrusion 9 (see Example 1) can be a rectangular shape as shown in FIG. 3 or a rib shape as shown in FIGS. Instead of this, a pin shape may be used as shown in FIG. The pin 26 shown in FIG. 18 is a cylindrical pin, but may be configured as a polygonal column-shaped pin, a cone, a pyramid, or the like.

  As the skin decoration molded product of the present invention, it is also suitable for automobile glove box lid, console lid, pillar garnish, rear luggage trim, armrest, safety pad, door trim and ceiling member, or seat back in general living space Can be applied to.

It is a principal part front view which shows the structural example which attached the skin decoration molded product. (Example) It is AA sectional drawing of FIG. (Example 1) It is the principal part perspective view which looked at the skin decoration molded product from the back side. (Example 1) It is principal part sectional drawing which shows the state before making a skin adhere to a base material. (Example 1) It is principal part sectional drawing which shows the state in the middle of sticking the epidermis to a base material. (Example 1) It is principal part sectional drawing which shows the state which has stuck the epidermis to the base material by vacuum suction. (Example 1) It is principal part sectional drawing of the base material and skin which were taken out from the vacuum forming machine. (Example 1) It is principal part sectional drawing which shows the trimming state of an outer skin. (Example 1) It is principal part sectional drawing which shows the state before crimping of a processus | protrusion. (Example 1) It is principal part sectional drawing which shows the crimped state with respect to protrusion. (Example 1) It is principal part sectional drawing which shows the state which has crimped the crimping tool. (Example 1) It is a principal part perspective view in the back surface side of the skin decoration molded product after crimping. (Example 1) It is principal part sectional drawing before the crimping explaining the crimping state. (Example 1) It is principal part sectional drawing after the crimping explaining a crimping state. (Example 1) It is the principal part perspective view seen from the back surface side of the base material. (Example 2) It is the other principal part perspective view seen from the back surface side of the base material. (Example 2) It is another principal part perspective view seen from the back surface side of the base material. (Example 2) It is another principal part perspective view seen from the back surface side of the base material. (Example 2) It is a perspective view in the corner part of a box. (Conventional example 1) It is a perspective view in the attachment structure of a skin material. (Conventional example 2)

Explanation of symbols

1 ... epidermis decorative molded product,
2 ... base material,
5 ... side part,
6 ... end face,
7 ... Corner,
8 ... epidermis,
9 ... protrusions,
15 ... Clamp,
16 ... receiving jig,
21 ... Caulking tool,
22 ... caulking part,
25 ... ribs,
26 ... pin,
27 ... recess,
30 ... Vacuum forming machine,
41 ... Box,
41c ... Corner portion,
42 ... epidermis,
44 ... sidewall,
45 ... ribs,
51 ... Box-shaped member,
52 ... skin material,
53 ... Corner part,
54, 55 ... vertical wall,
61 ... base material,
62 ... skin material,
63 ... locking protrusion,
64 ... locking hole,
L: Pull-in distance,
L1, L2 ... plate thickness.

Claims (7)

A base material provided with at least one or more corners on the periphery, and provided with a decorative side and a back side;
It is a part on the corner part side on the end face of the side part provided on the peripheral edge of the base material, and is erected on a part retracted from the edge of the end face located on the decoration side of the side part Protrusions,
Covering the decorative side of the base material, folding back so as to be wound around the back side of the base material, and covering the end surface of the side surface portion and the protrusions, and a skin,
A skin-decorated molded product characterized by comprising:   2. The epidermis according to claim 1, wherein the protrusion is erected at a portion retracted from the edge of the end surface located on the decorative side of the side surface part by a distance of half or more of the thickness of the end surface. Decorative molded product.   3. The skin decorative molded product according to claim 1, wherein an end surface portion of the side surface portion disposed on both side surfaces of the protrusion is formed as a recessed portion that is one step lower.   The skin-decorated molded article according to any one of claims 1 to 3, wherein the protrusion is formed as a rib. The rib is formed with a tapered inclined surface;
The skin-decorated molded article according to claim 4, wherein the inclined surface is formed as an inclined surface that is inclined downward toward the decorative side of the side surface portion.   The skin-decorated molded product according to any one of claims 1 to 5, wherein the protrusion covering the skin is crimped from above.   The skin-decorated molded article according to any one of claims 1 to 6, wherein the protrusion is erected on the corner portion having a substantially L shape in plan view.

Images