JP3679648B2 - Integral injection mold and method for making decorative plate with grill - Google Patents

Integral injection mold and method for making decorative plate with grill Download PDF

Info

Publication number
JP3679648B2
JP3679648B2 JP15778199A JP15778199A JP3679648B2 JP 3679648 B2 JP3679648 B2 JP 3679648B2 JP 15778199 A JP15778199 A JP 15778199A JP 15778199 A JP15778199 A JP 15778199A JP 3679648 B2 JP3679648 B2 JP 3679648B2
Authority
JP
Japan
Prior art keywords
grill
mold
skin material
speaker
peripheral wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP15778199A
Other languages
Japanese (ja)
Other versions
JP2000343564A (en
Inventor
喜彦 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor East Japan Inc
Original Assignee
Kanto Auto Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kanto Auto Works Ltd filed Critical Kanto Auto Works Ltd
Priority to JP15778199A priority Critical patent/JP3679648B2/en
Publication of JP2000343564A publication Critical patent/JP2000343564A/en
Application granted granted Critical
Publication of JP3679648B2 publication Critical patent/JP3679648B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、一体射出成形用金型におけるスピーカグリル成形用凹部が部分的に形成された一方の金型に表皮材を賦形し、他方の金型を閉鎖した状態で基材の樹脂原料を注入することにより表皮材に基材を一体化させると共に、スピーカグリル成形用凹部で成形された基材部分にスピーカグリルが形成されるグリル付化粧板を製作するための一体射出成形金型及び方法に関するものである。
【０００２】
【従来の技術】
この種のスピーカグリル付ドアトリム９を一体射出成形する場合、図２に示すように、一体射出成形用金型のグリル成形用凹部３を備えた下型１に表皮材５をセットして（図２Ａ）、真空成形により表皮材５を賦形する（同図Ｂ）。但し、予め対応形状に賦形された表皮材５を成形しておいても良い。上型２を閉鎖して基材６の樹脂原料を注入して一体化してドアトリム９を形成する（同図Ｃ）。凹部３で形成された基材６の凸状基材部分５ａをリング状周壁６ａを残すように穿孔して開口部７を形成し、スピーカグリルの付属部品であるメッシュ状のカバー８を周壁６ａの先端部に取付ける（同図Ｄ）。
【０００３】
【発明が解決しようとする課題】
したがって、裏側にスピーカが取付けられる基材の表側にスピーカグリルを形成するために、開口部を形成する穿孔作業に加えて、別のグリル部品を用意して、その取付け作業も必要とする。
【０００４】
本発明は、このような点に鑑みて、表皮材と一体化される基材に周壁部及びその内側の開口部を有するスピーカグリルを低コストで形成し得るグリル付化粧板を製作するための射出成形金型及び射出成形方法を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明は、この目的を達成するために、請求項１により、表皮材がセットされる一方の金型にスピーカグリル成形用凹部が部分的に形成され、他方の金型が閉鎖された状態で基材の樹脂原料を注入することにより表皮材に基材を一体化させることにより、スピーカグリル成形用凹部で成形された基材部分にスピーカの周囲を包囲する周壁部及びその内側の開口部を有するスピーカグリルが形成されるグリル付化粧板を製作するための一体射出成形金型において、一方の金型に形成されたスピーカグリル成形用凹部が、周壁部の高さに表皮材の厚みを加えた深さ及び周壁部の外周に表皮材の厚みを加えた周面形状を有するグリル形成部と、このグリル形成部よりもさらに深く、かつ周壁部の内周面よりも小さな周面形状を有するグリル型嵌合部とを有し、表皮材がセットされたグリル型嵌合部に嵌入する基部と、周壁部の内周面及び高さに対応する外周面形状を有し、かつ表面に***群が形成されたグリル形成部とを備えたグリル型が別体の金型として付属し、他方の金型における***群にそれぞれ対向する位置に、所属の***にそれぞれ先端部が挿入されるピン群を形成したことを特徴とする。
【０００６】
この一体射出成形金型を用いてグリル付化粧板を製作するには、請求項２により、一方の金型に、その形状に賦形された表皮材をセットした後に、グリル型嵌合部にグリル型の基部を嵌入し、他方の金型を閉鎖してピン群を所属の***にそれぞれ挿入させた状態で、基材の樹脂原料を注入することにより表皮材に基材を一体化させ、一体化された基材及び表皮材を脱型した後に、基部の周囲の表皮材をカットしてグリル型を脱型することにより周壁部及びピン群に対応する開口部を有するスピーカグリルを形成する。これにより、グリル成形部の周囲に表皮材でカバーされた基材の周壁部が形成され、その内側の基材部分にはピン群に対応してスピーカの音響波出力用の開口部が形成される。
【０００７】
【発明の実施の形態】
図１を基に本発明の実施の形態の一例によるスピーカグリル付ドアトリムの一体射出成形金型及びその使用方法を説明する。射出成形用金型の下型１には、スピーカの周囲を包囲して表皮材側へ突出する周壁部１７ａ及びその内側の開口部１７ｂ（図１Ｅでは開口径及び間隔を拡大して示す）を有するスピーカグリル１７を形成するために、前方へ突出する周壁部１７ａの深さに表皮材５の厚みを加えた深さ及び周壁部１７ａの厚みに表皮材５の厚みを加えた内周面を有するグリル形成部４ａと、このグリル形成部よりもさらに深く、かつ周壁部１７ａの内周面よりも小さな内周面を有するグリル型嵌合部４ｂとを有するスピーカグリル成形用凹部４が形成されている。
【０００８】
１０は付属のグリル型であり、表皮材５が賦形されたグリル型嵌合部４ｂに嵌入する基部１２と、周壁部１７ａの内周面及びその深さに対応する形状のグリル形成部１１とを備えると共に、このグリル形成部の表面１３に***１３ａが網状に形成されている。対応して、上型２の内面には、***１３ａにそれぞれ対向する位置にピン１８（図１Ｄでピン径及び間隔を拡大して示す）が網状に形成されている。
【０００９】
このように構成されたスピーカグリル付化粧板の一体射出成形方法を図１を基に説明する。スピーカグリル成形用凹部４が形成された下型１に表皮材５をセットし（図１Ａ）、真空吸引により下型１に対応して表皮材５を賦形する（同図Ｂ）。グリル型嵌合部４ｂにグリル型１０の基部１２を嵌入し、グリル形成部１１の周囲に周壁部１７ａを成形する隙間１９を形成する（同図Ｃ）。
【００１０】
上型２を閉鎖して上型２のピン１８の先端部が所属の***１３ａに挿入された状態で、基材６の樹脂原料を注入することにより表皮材５に基材６が一体化される（同図Ｄ）。これにより、ドアトリム９が製作され、その脱型後に基部１２の周囲の表皮材５を周壁部１７ａの先端縁が表皮材５でカバーされる状態にカッタ１５でカットしてグリル型１０を脱型することにより、裏側にスピーカが取付けられる基材６の領域にはメッシュ状に開口部１７ｂが形成されて音響波が車室内へ出力され、その周囲は周壁１７ａでリング状に包囲され、その周囲及び先端縁は表皮材５でカバーされたスピーカグリル１７が形成される（同図Ｅ）。
【００１１】
尚、表皮材５は、前述の実施の形態に代えて、凹部を備えた金型でスラッシュ成形することにより、射出成形用下型に対応した形状に予め賦形しても良い。本発明は、基材に表皮材が一体化されたスピーカグリル付化粧板としてインストルメントパネル等に適用することもできる。
【００１２】
【発明の効果】
本発明によれば、基材に表皮材が一体化されたスピーカグリル付化粧板を製作する際に、スピーカグリル用の別部品が不要となり、その取付け作業も無くすことができ、したがってスピーカを取付ける化粧板の低コスト及び生産性の向上につながる。
【図面の簡単な説明】
【図１】本発明の実施の形態によるスピーカグリル付化粧板の一体射出成形方法を説明する図である。
【図２】従来のスピーカグリル付化粧板の一体射出成形方法を説明する図である。
【符号の説明】
１ 下型
２ 上型
４ スピーカグリル成形用凹部
４ａ グリル形成部
４ｂ グリル型嵌合部
５ 表皮材
１０ グリル型
１１ グリル形成部
１２ 基部
１３ａ ***
１７ スピーカグリル
１７ａ 周壁部
１７ｂ 開口部
１８ ピン[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a skin material is formed on one mold in which a concave portion for molding a speaker grill is partially formed in an integral injection mold, and the resin material of the base material is closed with the other mold closed. Integrated injection mold and method for producing a decorative board with a grill in which the base material is integrated with the skin material by pouring and the speaker grill is formed on the base material portion formed by the concave portion for forming the speaker grill It is about.
[0002]
[Prior art]
When this kind of door trim 9 with speaker grill is integrally injection-molded, as shown in FIG. 2, the skin material 5 is set on the lower mold 1 provided with the grill molding recess 3 of the integral injection mold (see FIG. 2). 2A), the skin material 5 is shaped by vacuum forming (FIG. B). However, the skin material 5 shaped in advance in a corresponding shape may be formed. The upper mold 2 is closed and the resin raw material of the base material 6 is injected and integrated to form a door trim 9 (FIG. C). The convex base material portion 5a of the base material 6 formed by the concave portion 3 is perforated so as to leave the ring-shaped peripheral wall 6a to form the opening 7, and the mesh-shaped cover 8 which is an accessory part of the speaker grille is attached to the peripheral wall 6a. (D in the figure).
[0003]
[Problems to be solved by the invention]
Therefore, in order to form the speaker grill on the front side of the base material to which the speaker is attached on the back side, in addition to the drilling operation for forming the opening, another grill component is prepared and the installation operation is also required.
[0004]
In view of such a point, the present invention is for producing a decorative plate with a grill that can form a speaker grill having a peripheral wall portion and an opening portion inside the base material integrated with a skin material at a low cost. An object is to provide an injection mold and an injection molding method.
[0005]
[Means for Solving the Problems]
In order to achieve this object, according to the present invention, in accordance with claim 1, a speaker grill molding recess is partially formed in one mold on which a skin material is set, and the other mold is closed. By integrating the base material into the skin material by injecting the resin material of the base material, the peripheral wall portion surrounding the periphery of the speaker and the inner opening portion are surrounded by the base material portion formed by the concave portion for speaker grill molding. In an integral injection mold for manufacturing a decorative plate with a grill on which a speaker grille is formed, a speaker grill molding recess formed in one mold adds the thickness of the skin material to the height of the peripheral wall. A grill forming portion having a circumferential shape obtained by adding the thickness of the skin material to the depth and outer circumference of the peripheral wall portion, and a peripheral surface shape that is deeper than the grill forming portion and smaller than the inner peripheral surface of the peripheral wall portion. Grill type fitting part A grille having a base portion that fits into a grill-type fitting portion in which a skin material is set, an outer peripheral shape corresponding to the inner peripheral surface and height of the peripheral wall portion, and a small hole group formed on the surface A grill mold provided with a forming part is attached as a separate mold, and a pin group in which the tip part is inserted into each small hole is formed at a position facing each small hole group in the other mold. Features.
[0006]
In order to manufacture a decorative plate with a grill using this integral injection mold, after setting the skin material shaped to one of the molds according to claim 2, the grill mold fitting portion is set. Inserting the base of the grill mold, closing the other mold and inserting the pin group into the corresponding small hole respectively, by injecting the resin material of the base material, the base material is integrated with the skin material, After removing the integrated base material and skin material, the skin material around the base is cut to remove the grill mold, thereby forming a speaker grille having openings corresponding to the peripheral wall portion and the pin group. . As a result, the peripheral wall portion of the base material covered with the skin material is formed around the grill molding portion, and the opening portion for the acoustic wave output of the speaker is formed in the base material portion inside thereof corresponding to the pin group. The
[0007]
DETAILED DESCRIPTION OF THE INVENTION
An integral injection mold for a door trim with a speaker grill according to an example of an embodiment of the present invention and a method for using the same will be described with reference to FIG. The lower mold 1 of the injection mold has a peripheral wall portion 17a that surrounds the periphery of the speaker and protrudes toward the skin material side, and an opening portion 17b inside thereof (in FIG. 1E, the opening diameter and interval are shown enlarged). In order to form the speaker grille 17 having the inner peripheral surface obtained by adding the thickness of the skin material 5 to the depth obtained by adding the thickness of the skin material 5 to the depth of the peripheral wall portion 17a protruding forward and the thickness of the peripheral wall portion 17a. A speaker grill molding recess 4 having a grill forming portion 4a having a grill mold fitting portion 4b which is deeper than the grill forming portion and has an inner peripheral surface smaller than the inner peripheral surface of the peripheral wall portion 17a is formed. ing.
[0008]
Reference numeral 10 denotes an attached grill mold, which includes a base 12 that fits into the grill mold fitting portion 4b in which the skin material 5 is shaped, and a grill forming portion 11 that has a shape corresponding to the inner peripheral surface and the depth of the peripheral wall portion 17a. And a small hole 13a is formed in a net shape on the surface 13 of the grill forming portion. Correspondingly, on the inner surface of the upper mold 2, pins 18 (shown by enlarging the pin diameter and interval in FIG. 1D) are formed in a net shape at positions facing the small holes 13 a.
[0009]
An integral injection molding method for the decorative panel with speaker grill constructed as described above will be described with reference to FIG. The skin material 5 is set on the lower mold 1 in which the speaker grill molding recess 4 is formed (FIG. 1A), and the skin material 5 is shaped corresponding to the lower mold 1 by vacuum suction (FIG. 1B). The base 12 of the grill mold 10 is fitted into the grill mold fitting portion 4b, and a gap 19 for forming the peripheral wall portion 17a is formed around the grill forming portion 11 (FIG. 5C).
[0010]
The base material 6 is integrated with the skin material 5 by injecting the resin raw material of the base material 6 in a state where the upper die 2 is closed and the tip portion of the pin 18 of the upper die 2 is inserted into the associated small hole 13a. (D in the figure). Thereby, the door trim 9 is manufactured, and after the mold removal, the skin material 5 around the base portion 12 is cut with the cutter 15 so that the front edge of the peripheral wall portion 17a is covered with the skin material 5, and the grill mold 10 is removed. As a result, an opening 17b is formed in a mesh shape in the region of the base material 6 to which the speaker is attached on the back side, and an acoustic wave is output to the vehicle interior, and its periphery is surrounded in a ring shape by the peripheral wall 17a. And the speaker grille 17 whose tip edge is covered with the skin material 5 is formed (Fig. E).
[0011]
The skin material 5 may be pre-shaped into a shape corresponding to the lower mold for injection molding by performing slush molding with a mold having a recess instead of the above-described embodiment. The present invention can also be applied to an instrument panel or the like as a decorative plate with a speaker grill in which a skin material is integrated with a base material.
[0012]
【The invention's effect】
According to the present invention, when producing a decorative plate with a speaker grill in which a skin material is integrated with a base material, a separate part for the speaker grill is not required, and the mounting work can be eliminated. This leads to low cost and improved productivity of the decorative board.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining an integral injection molding method for a decorative plate with a speaker grill according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining a conventional integral injection molding method for a decorative plate with a speaker grill.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lower mold | type 2 Upper mold | type 4 Speaker grill molding recessed part 4a Grill formation part 4b Grille type fitting part 5 Skin material 10 Grill type | mold 11 Grill formation part 12 Base 13a Small hole 17 Speaker grill 17a Perimeter wall part 17b Opening part 18 Pin

Claims (2)

表皮材がセットされる一方の金型にスピーカグリル成形用凹部が部分的に形成され、他方の金型が閉鎖された状態で基材の樹脂原料を注入することにより表皮材に基材を一体化させることにより、スピーカグリル成形用凹部で成形された基材部分にスピーカの周囲を包囲する周壁部及びその内側の開口部を有するスピーカグリルが形成されるグリル付化粧板を製作するための一体射出成形金型において、
一方の金型に形成されたスピーカグリル成形用凹部が、周壁部の高さに表皮材の厚みを加えた深さ及び前記周壁部の外周に前記表皮材の厚みを加えた周面形状を有するグリル形成部と、このグリル形成部よりもさらに深く、かつ前記周壁部の内周面よりも小さな周面形状を有するグリル型嵌合部とを有し、
前記表皮材がセットされた前記グリル型嵌合部に嵌入する基部と、前記周壁部の内周面及び高さに対応する外周面形状を有し、かつ表面に***群が形成されたグリル形成部とを備えたグリル型が別体の金型として付属し、
他方の金型における***群にそれぞれ対向する位置に、所属の前記***にそれぞれ先端部が挿入されるピン群を形成したことを特徴とするグリル付化粧板を製作するための一体射出成形金型。The base material is integrated with the skin material by injecting the resin material of the base material in a state where the concave portion for speaker grill molding is partially formed in one mold where the skin material is set and the other mold is closed. To produce a decorative plate with a grill in which a speaker grille having a peripheral wall portion surrounding the periphery of the speaker and an opening portion inside thereof is formed on the base material portion formed by the concave portion for speaker grill molding. In injection mold,
The speaker grill molding recess formed in one mold has a depth obtained by adding the thickness of the skin material to the height of the peripheral wall portion, and a peripheral surface shape obtained by adding the thickness of the skin material to the outer periphery of the peripheral wall portion. A grill forming portion, and a grill-type fitting portion that is deeper than the grill forming portion and has a smaller peripheral surface shape than the inner peripheral surface of the peripheral wall portion,
A grille having a base part that fits into the grill mold fitting part in which the skin material is set, an outer peripheral surface shape corresponding to an inner peripheral surface and a height of the peripheral wall part, and a small hole group formed on the surface A grill mold with a part is attached as a separate mold,
An integral injection mold for manufacturing a decorative plate with a grill, characterized in that a pin group in which a tip portion is inserted into each small hole is formed at a position opposed to the small hole group in the other mold. . 請求項１記載のグリル付化粧板を製作するための一体射出成形金型を用いて前記グリル付化粧板を製作するための一体射出成形方法であって、
一方の金型に、その形状に賦形された表皮材をセットした後に、グリル型嵌合部にグリル型の基部を嵌入し、
他方の金型を閉鎖してピン群を所属の***にそれぞれ挿入させた状態で、基材の樹脂原料を注入することにより表皮材に前記基材を一体化させ、
一体化された前記基材及び前記表皮材を脱型した後に、前記基部の周囲の前記表皮材をカットして前記グリル型を脱型することにより、周壁部及び前記ピン群に対応する開口部を有するスピーカグリルを形成することを特徴とするグリル付化粧板を製作するための一体射出成形方法。An integral injection molding method for producing the decorative plate with grill using the integral injection mold for producing the decorative plate with grill according to claim 1,
After setting the skin material shaped to one of the molds, insert the base of the grill mold into the grill mold fitting part,
In the state where the other mold is closed and the pin group is inserted into the corresponding small hole, the base material is integrated with the skin material by injecting the resin raw material of the base material,
After removing the integrated base material and the skin material, by cutting the skin material around the base and removing the grill mold, the opening corresponding to the peripheral wall portion and the pin group A monolithic injection molding method for producing a decorative plate with a grill, characterized in that a speaker grille having the above-described structure is formed.
JP15778199A 1999-06-04 1999-06-04 Integral injection mold and method for making decorative plate with grill Expired - Fee Related JP3679648B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15778199A JP3679648B2 (en) 1999-06-04 1999-06-04 Integral injection mold and method for making decorative plate with grill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15778199A JP3679648B2 (en) 1999-06-04 1999-06-04 Integral injection mold and method for making decorative plate with grill

Publications (2)

Publication Number Publication Date
JP2000343564A JP2000343564A (en) 2000-12-12
JP3679648B2 true JP3679648B2 (en) 2005-08-03

Family

ID=15657167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15778199A Expired - Fee Related JP3679648B2 (en) 1999-06-04 1999-06-04 Integral injection mold and method for making decorative plate with grill

Country Status (1)

Country Link
JP (1) JP3679648B2 (en)

Also Published As

Publication number Publication date
JP2000343564A (en) 2000-12-12

Similar Documents

Publication Publication Date Title
US4291428A (en) Process for the manufacture of moulded insoles
US20120200097A1 (en) Mold structure and bumper
US20070187173A1 (en) Speaker grille
JP3679648B2 (en) Integral injection mold and method for making decorative plate with grill
JPH08438B2 (en) Plastic molded article, its manufacturing method and molding die
GB2360011A (en) A component with a metallic foil secured to an injection moulded substrate
JP2019025598A (en) Manufacturing method for vehicular interior material, and vehicular interior material
JP3116340B2 (en) Method of manufacturing acoustic device and acoustic device
JPH0614984Y2 (en) Parts mounting structure to resin molding
JP2977147B2 (en) Manufacturing method for automotive interior parts
JP2780650B2 (en) Piercing mold for interior materials
JPH1088699A (en) Hollowed-out external wall panel
JP3628979B2 (en) Method for forming opening of molded article with skin material
JP3951243B2 (en) Window manufacturing method in in-mold molding
JP3406731B2 (en) Method for producing sheet-like resin molded product partially decorated with decorative skin material
JP3546168B2 (en) Film trimming device
JP3745940B2 (en) Resin molded body and molding die thereof
JPS63212521A (en) Laminated molded product
JP3019290B2 (en) Hole processing method for interior parts
JPH0516165A (en) Manufacture of door trim
JP2922410B2 (en) Manufacturing method for automotive interior parts
JP3732710B2 (en) Mold for preforming skin material of rear parcel in automobile and method for preforming skin material
JP3701421B2 (en) Manufacturing method of skin integral foam molding
JPH10305442A (en) Manufacture of foamed molded article integral with skin
JP2002103374A (en) Technique for molding door trim with speaker grille

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050421

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Effective date: 20050510

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Effective date: 20050513

Free format text: JAPANESE INTERMEDIATE CODE: A61

R150 Certificate of patent (=grant) or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees