METHOD OF MOLDING CLIP MOUNT AND TRIM BOARD

• US 20130305653A1
• Filed: 04/17/2013
• Published: 11/21/2013
• Est. Priority Date: 05/21/2012
• Status: Active Grant

• Current Assignee: Toyota Boshoku Kabushiki Kaisha
• Original Assignee: Toyota Boshoku Kabushiki Kaisha
• Inventors: ISHIZU, Yohei, OKADA, Junichi, TANAKA, Hideaki
• Granted Patent: US 8,877,113 B2
• Time in Patent Office: Days
• US Class Current: 52/718.01
• CPC Class Codes: B29C 2045/0093 of articles provided with an attaching element
• CPC Class Codes: B29C 45/1418 the inserts being deformed or preformed, e.g. by the injection pressure
• CPC Class Codes: B29C 45/14336 Coating a portion of the article, e.g. the edge of the article B29C45/14573 and B29C45/14598 take precedence
• CPC Class Codes: B29C 45/33 having transversely, e.g. radially, movable mould parts
• CPC Class Codes: B29C 45/44 for undercut articles
• CPC Class Codes: B60R 13/0206 Arrangements of fasteners and clips specially adapted for attaching inner vehicle liners or mouldings devices for fastening or securing F16B
• CPC Class Codes: B60R 13/0243 Doors
• CPC Class Codes: F16B 2/20 Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
• CPC Class Codes: F16B 5/0664 at least one of the sheets or plates having integrally formed or integrally connected snap-in-features

Abstract

A method of molding a clip mount on a baseboard includes: forming a clip mount forming space with a die set including at least first slide die and second slide die; injecting molten resin into the space; forming a first wall; forming a connecting wall so as to extend from a distal end of the first wall such that a distance between the connecting wall and a surface of the baseboard increases as a distance from the first wall increases; forming a second wall; forming a mount wall so as to extend from an end of the second wall such that a distance between the mount wall and the connecting wall increases as a distance from the second wall increases; sliding the first slide die for removal; and sliding the second slide die in a different direction from a direction in which the first slide die is slid for removal.

Claims

1. A method of molding a clip mount on a baseboard, the clip mount being for holding a clip with which the baseboard is attached to a plate-shaped member, the method comprising:

forming a clip mount forming space with a first slide die including a projection, a second slide die including a projection, and a base die including a recess in which the first slide die and the second slide die are placed, a first portion of the clip mount forming space being defined by a first surface of the projection of the first slide die and a surface of the second slide die opposite the first surface of the projection of the first slide die, a second portion of which being defined by a second surface of the projection of the first slide die continuing from the first surface thereof and a first surface of the projection of the second slide die opposite the second surface of the projection of the first slide die, a third portion of which being defined by a second surface of the projection of the second slide die continuing from the first surface thereof and a first surface of the base die opposite the second surface of the second slide die, a fourth portion of which being defined by a third surface of the projection of the second slide die continuing from the second surface thereof and a second surface of the base die continuing from the first surface of the base die;

injecting molten resin into the clip mount forming space;

forming a first perpendicular wall in the first portion of the clip mount forming space so as to rise from an opposed surface of the baseboard that is to be arranged opposite the plate-shaped member when attached to the plate-shaped member;

forming a connecting wall in the second portion of the clip mount forming space so as to extend from a distal end of the first perpendicular wall away from the baseboard such that a distance between the connecting wall and the opposed surface of the baseboard is constant or increases as a distance from the first perpendicular wall increases;

forming a second perpendicular wall in the third portion of the clip mount forming space so as to rise from a distal end of the connecting wall away from the first perpendicular wall toward an opposite direction to the baseboard;

forming a mount wall with a mounting hole in the fourth portion of the clip mount forming space so as to extend from an end of the second perpendicular wall away from the connecting wall such that a distance between the mount wall and the connecting wall is constant or increases as a distance from the second perpendicular wall increases;

sliding the first slide die for removal from the formed clip mount; and

sliding the second slide die in a different direction from a direction in which the first slide die is slid for removal from the formed clip mount.

2. The method according to claim 1, wherein

the second slide die includes a slide die portion and a core die portion having a slide surface on which the slide die portion slides,

the surface of the second slide die which defines the first portion of the clip mount forming space is a surface of the core die portion,

the first surface, the second surface, and the third surface of the projection of the second slide die which define the second portion, the third portion, and the fourth portion of the clip mount forming space, respectively, are surfaces of the slide die portion,

the sliding the first slide die includes sliding the first die along the opposed surface of the baseboard, and

the sliding the second slide die includes sliding the slide die portion on the slide surface of the core die portion along the opposed surface of the baseboard.

3. The method according to claim 1, wherein the direction in which the second slide die is slid is an opposite direction from the direction in which the first slide die is slid.

4. The method according to claim 1, further comprising forming a baseboard forming space with the first slide die, the second slide die, the base die, and another die such that the baseboard forming space is communicated with the first portion of the clip mount forming space, wherein

the injecting molten resin further including injecting the molten resin into the baseboard forming space.

5. The method according to claim 4, further comprising moving the other die perpendicular to or substantially perpendicular to the direction in which the second slide die is slid, wherein

the sliding the second slide die includes moving the second slide die at an angle between the directions in which the other die is moved and the second slide die is slid, respectively, to slide the second slide die in the different direction from the direction in which the first slide die is slid.

6. The method according to claim 1, further comprising:

forming a baseboard forming space with the first slide die, the second slide die, the base die, and another die; and

forming the baseboard in the baseboard forming space such that a portion of the opposed surface of the baseboard is concaved, wherein

the forming the clip mount forming space includes arranging the first portion of the clip mount forming space to connect with the portion of the opposed surface of the base board which is concaved.

7. The method according to claim 4, wherein

the forming the baseboard forming space includes forming a bend in a portion with which the first portion of the clip mount forming space is connected.

8. A trim board comprising:

a baseboard including a backside with a concave; and

a clip mount for mounting the baseboard with a clip, the clip mount being integrally provided with the baseboard and connected with a portion of the backside of the baseboard in which the concave is provided, the clip mount including;

a first perpendicular wall continuing from the portion of the backside so as to rise therefrom in a direction perpendicular or substantially perpendicular to the backside;

a second perpendicular wall perpendicular or substantially perpendicular to the backside so as not to face the first perpendicular wall;

a connecting wall extending from a distal end of the first perpendicular wall to an end of the second perpendicular wall closer to the first perpendicular wall such that a distance between the connecting wall and the backside increases as a distance from the first perpendicular wall increases; and

a mount wall including a mounting hole and extending from another end of the second perpendicular wall so as to face the connecting wall such that a distance between the mount wall and the connecting wall increases as a distance from the second perpendicular wall increases.

9. The trim board according to claim 8, wherein the clip mount further includes sidewalls arranged on opposite sides of the first perpendicular wall and connected with respective sides of the first perpendicular wall and the connecting wall.