JPS62256630A - Vacuum molding method and molding die therefor - Google Patents
Vacuum molding method and molding die thereforInfo
- Publication number
- JPS62256630A JPS62256630A JP61099854A JP9985486A JPS62256630A JP S62256630 A JPS62256630 A JP S62256630A JP 61099854 A JP61099854 A JP 61099854A JP 9985486 A JP9985486 A JP 9985486A JP S62256630 A JPS62256630 A JP S62256630A
- Authority
- JP
- Japan
- Prior art keywords
- molded product
- mold
- resin molded
- vacuum
- sheet
- 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.)
- Pending
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 20
- 229920005989 resin Polymers 0.000 claims abstract description 57
- 239000011347 resin Substances 0.000 claims abstract description 57
- 238000009423 ventilation Methods 0.000 claims description 18
- 238000007666 vacuum forming Methods 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005323 electroforming Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 235000009852 Cucurbita pepo Nutrition 0.000 description 1
- 241000219104 Cucurbitaceae Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000021189 garnishes Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/34—Moulds for undercut articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/722—Decorative or ornamental articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、軟化状態にあるアンダカツト部を’１７１え
る樹脂成形品の表面に真空引きしてシボ模様φステッチ
模様等の所定の凹凸模様を賦形させる真空成形力υ；と
その成形に使用する成形用金型に関し、例えば、自動車
内装品におけるポーンパッド、メータフード、ドアトリ
ム番ガーニッシュ等の成形に利用することができるもの
である。[Detailed Description of the Invention] <Industrial Application Field> The present invention applies a vacuum to the surface of a resin molded product that has softened undercuts to create a predetermined uneven pattern such as a grain pattern or φ stitch pattern. Regarding the vacuum forming force υ for shaping and the molding die used for the forming, it can be used, for example, for forming pawn pads, meter hoods, door trim garnishes, etc. in automobile interior parts.
〈従来の技術〉
従来、アンダカツト部を備える樹脂成形品の表面に真空
引きして所定の凹凸模様を賦形させ、加飾成形品を製造
する方法は、次のようであった（第１１〜１３図参照）
。<Prior art> Conventionally, the method of producing a decorative molded product by applying a vacuum to the surface of a resin molded product having an undercut portion to form a predetermined uneven pattern was as follows (11th to (See Figure 13)
.
まず、真空引きに使用する成形用の金型４としては、各
々、樹脂成形品２の表面に所定の凹凸模様を賦形可能な
型面５ａ・６ａと、型面５ａ働６ａから外周面に連通ず
る複数の通気孔５ｂ・６ｂを備える例えば２つの割型５
φ６が使用されてい・た、ちなみに、成形用金型４とし
て、２つに分割される割型５・６が使用される理由は、
真空引きする樹脂成形品２がアンダヵット部２ａを備え
ていることから、金型４内への樹脂成形品２のセット時
及び成形後の金型４からの離型時、金型４が分割されな
いとそれらの作業を行なえないからである。First, the molding mold 4 used for vacuuming has mold surfaces 5a and 6a that can form a predetermined uneven pattern on the surface of the resin molded product 2, and mold surfaces 5a and 6a that extend from the mold surface 5a to the outer circumferential surface. For example, two split molds 5 each having a plurality of communicating ventilation holes 5b and 6b.
φ6 was used.By the way, the reason why split molds 5 and 6, which are divided into two, are used as the molding die 4 is as follows.
Since the resin molded product 2 to be evacuated includes the undercut portion 2a, the mold 4 will not be divided when the resin molded product 2 is set in the mold 4 and when released from the mold 4 after molding. This is because they cannot perform these tasks.
なお、１０は、真空引き時に使用する吸引手段であり、
真空ポンプｌＯａ・アキュムレータ１゜ｂ・バルブ１０
ｃ及び通気孔５ｂΦ６ｂからエアを吸引−ｉｆ能な４体
１０ｄから構成されている。In addition, 10 is a suction means used at the time of evacuation,
Vacuum pump lOa, accumulator 1°b, valve 10
It is composed of four bodies 10d capable of sucking air from c and ventilation holes 5b and Φ6b.
そして、成形時には、予め樹脂成形品２を軟化状ｙｇに
加熱しておき、その樹脂成形品２表面に型面５ａΦ６ａ
が接触するように割型５働６を配設し、その金型４に蓋
体１０ｃをセットして真空引きし、樹脂成形品２表面に
割型５・６の型面５ａ・６ａにより所定の凹凸模様を賦
形させ、加飾成形品ｌを得ていた。During molding, the resin molded product 2 is heated in advance to a softened state yg, and the surface of the resin molded product 2 is coated with a mold surface 5aΦ6a.
The split molds 5 and 6 are arranged so that the molds 5 and 6 are in contact with each other, and the cover 10c is set on the mold 4, and a vacuum is applied. A decorated molded product 1 was obtained by forming a concavo-convex pattern.
〈発明が解決しようとする問題点〉
しかし、従来の真空成形方法では、使用する金型４が複
数に分割される′Ｍ割型・６を合体させて使用するもの
であることから、真空引き時に割型５・６の分割線（Ｐ
Ｌ）Ｘが凹凸模様とともに樹脂成形品２に賦形され、得
られた加飾成形品ｌの外観を低下させることとなってい
た。<Problems to be solved by the invention> However, in the conventional vacuum forming method, the mold 4 used is divided into a plurality of ``M split molds 6'' which are combined and used. Sometimes the dividing line of split molds 5 and 6 (P
L)
また、従来の真空成形方法では、使用する金型４におけ
る複数の割型５Φ６が、各々所定の凹凸模様を賦形回旋
でかつ樹脂成形品２の外形に沿う型面５ａ・６ａを備え
る必要があることから、電鋳法による電鋳金型を利用す
ることとなって、金型４の製造工数及びコストがかかる
こととなっていた。In addition, in the conventional vacuum forming method, it is necessary for the plurality of split molds 5Φ6 in the mold 4 to be used to each have mold surfaces 5a and 6a that form a predetermined uneven pattern and follow the outer shape of the resin molded product 2. For this reason, an electroforming mold using an electroforming method has been used, which increases the number of man-hours and cost for manufacturing the mold 4.
本発明は、上記問題点を解決するものであって、アンダ
カツト部を備える樹脂成形品の表面に所定の凹凸模様を
賦形させるよう真空成形する際。The present invention solves the above-mentioned problems when performing vacuum forming to form a predetermined uneven pattern on the surface of a resin molded product having an undercut portion.
従来生じていた分割線を無くして外観を良好に成形でき
るとともに、その成形用の金型の製造工数及びコストを
低減させることができる真空成形方法及びその方法に使
用する成形用金型を提供することを目的とする。To provide a vacuum forming method capable of eliminating conventionally occurring parting lines, allowing molding to have a good appearance, and reducing manufacturing man-hours and costs for the mold, and a mold for use in the method. The purpose is to
く問題点を解決するための手段〉
本発明に係る真空成形方法は、軟化状態のアンダカツト
部を備える樹脂成形品の表面に真空引きして所定の凹凸
模様を賦形させる真空成形方法であって、下記工程を経
て成形することにより、既述の問題を解決するものであ
る。Means for Solving the Problems> The vacuum forming method according to the present invention is a vacuum forming method in which a predetermined uneven pattern is formed by applying vacuum to the surface of a resin molded product having an undercut portion in a softened state. The above-mentioned problems are solved by molding through the following steps.
（１）表裏を貫く複数の通気孔を備えかつ裏面に凹凸模
様を賦形可撤な型面を備えて可撓性を有するシート型を
樹脂成形品表面に被覆させるシート型被覆工程。(1) A sheet mold covering step in which the surface of the resin molded product is coated with a flexible sheet mold that has a plurality of ventilation holes passing through the front and back sides and has a removable mold surface on which an uneven pattern can be formed on the back surface.
（２）吸引手段に連結されて複数の枠体からなる保持枠
をシート型被覆工程後のシート型表面に配置させ、シー
ト型を保持する保持枠セット工程。(2) A holding frame setting step in which a holding frame made up of a plurality of frames connected to a suction means is placed on the surface of the sheet mold after the sheet mold coating step to hold the sheet mold.
（３）吸引手段を作動させ、樹脂成形品を真空引きし、
樹脂成形品表面にシート型型面により凹凸模様を賦形さ
せる賦形工程。(3) Activate the suction means to vacuum the resin molded product,
A forming process in which an uneven pattern is formed on the surface of a resin molded product using a sheet mold surface.
本発明に係る成形用金型は、軟化状態のアンダカツト部
を備える樹脂成形品の表面に１°（空引きして所定の凹
凸模様を賦形させる真空成形方法に使用する成形用金型
であって、
表裏を貢く複数の通気孔を備えかつ表面に凹凸模様を賦
形可能な型面を備えて、ｖＡ脂成形品表面を被覆可能な
可撓性を有するシート型と、吸引手段に連結され、樹脂
成形品表面を被覆したシート型表面を保持可能な樹脂成
形品の外形に対応する内周部を備え、複数の枠体に分−
ｊ可使な保持枠と、
から構成させることにより、既述の問題点を解決するも
のである。The molding die according to the present invention is a molding die used in a vacuum forming method in which a predetermined uneven pattern is formed by 1° (air drawing) on the surface of a resin molded product having an undercut portion in a softened state. A flexible sheet mold that is equipped with a plurality of ventilation holes on the front and back sides and a mold surface that can form an uneven pattern on the surface and can cover the surface of the vA resin molded product, and is connected to a suction means. It has an inner periphery corresponding to the outer shape of the resin molded product that can hold the sheet type surface that covers the surface of the resin molded product, and is divided into multiple frames.
The above-mentioned problems are solved by constructing the holding frame, which can be used, and the following.
〈発明の作用φ効果〉
本発明では、成形時、軟化状態にあるアンダカツト部を
備える樹脂成形品表面に所定の通気孔及び型面を備えて
可撓性を有するシート型を被覆させ、その後、シート型
表面に吸引手段に連結されて複数の枠体からなる保持枠
をセットし、シート型を保持枠で保持させ、そして、吸
引手段を作動させて樹脂成形品を真空引きするものであ
る。<Operation φ effect of the invention> In the present invention, during molding, the surface of the resin molded product having the undercut portion in a softened state is covered with a flexible sheet mold provided with predetermined ventilation holes and mold surfaces, and then, A holding frame consisting of a plurality of frames connected to a suction means is set on the surface of the sheet mold, the sheet mold is held by the holding frame, and the suction means is operated to vacuum the resin molded product.
そのため、樹脂成形品表面には分割されていない可撓性
を有する一枚のシート型が配設されて真空引きされるこ
とから、樹脂成形品表面には、シート型型面により所定
の凹凸模様が賦形されるだけで、従来生じていた割型の
分割線（ＰＬ）が賦形されず、アンダカツト部を備える
樹脂成形品を真空成形する際、外観を良好に成形するこ
とができる。Therefore, a single, undivided, flexible sheet mold is placed on the surface of the resin molded product and vacuumed, so the surface of the resin molded product has a predetermined uneven pattern formed by the surface of the sheet mold. is only shaped, and the parting line (PL) of the split mold, which conventionally occurs, is not shaped, and when vacuum forming a resin molded product with an undercut part, it is possible to form a resin molded product with a good appearance.
また、使用する成形用金型は、所定の通気孔及び型面を
備えて可撓性を有するシート型と、吸引手段に連結され
、樹脂成形品表面を被覆したシート型を真空引き時保持
できるよう、樹脂成形品の外形に夕４応する内周部を備
え、複数の枠体からなる保持枠とから構成されるもので
ある。In addition, the molding mold used is a flexible sheet mold that is equipped with predetermined ventilation holes and a mold surface, and is connected to a suction means so that the sheet mold that covers the surface of the resin molded product can be held during vacuuming. The holding frame is comprised of a plurality of frame bodies, and has an inner circumferential portion that corresponds to the outer shape of the resin molded product.
そのため、シートａが、薄いステンレス鋼板等の変形可
能な板金や薄い耐熱性のある紙等をプレス加工・エツチ
ング加ニーレーザ加工等で所定の型面及び通気孔を形成
したものや、耐熱性のあるエポキシ・ポリエステル等の
合成樹脂材料やシリコン等のゴム材料を型成形等して形
成したものを利用することができ、また、保持枠が、単
にシート型を保持できる樹脂成形品の外形に対応する複
数の枠体から構成されればよいことから、それらの枠体
を木型・石こう型・樹脂型等で形成でき、シート型及び
保持枠を容易に製造でき、両者の結合手段も不要である
ことから、従来の電鋳金型より製造工数及びコストを低
減させて、真空成形用の金型を得ることができる。Therefore, sheet a may be made of deformable sheet metal such as a thin stainless steel plate, thin heat-resistant paper, etc., with a predetermined mold surface and ventilation holes formed by pressing, etching, kneeling, laser processing, etc., or a heat-resistant It can be formed by molding a synthetic resin material such as epoxy or polyester or a rubber material such as silicone, and the holding frame corresponds to the external shape of the resin molded product that can simply hold the sheet mold. Since it only needs to be composed of a plurality of frames, these frames can be formed from wooden molds, plaster molds, resin molds, etc., and sheet molds and holding frames can be easily manufactured, and there is no need for means for connecting the two. Therefore, it is possible to obtain a mold for vacuum forming with reduced manufacturing man-hours and costs compared to conventional electroforming molds.
そしてまた、本発明では、シート型さえ取替えれば、同
一外形の樹脂成形品に所望の凹凸模様を賦形でき、その
シート型自体の製造工数及びコストがかからないことか
ら、少量多種の凹凸模様の賦形を簡便・低コストで行な
うことができる。Furthermore, in the present invention, a desired uneven pattern can be formed on a resin molded product of the same external shape by simply replacing the sheet mold, and since the manufacturing process and cost of the sheet mold itself are not required, a wide variety of uneven patterns can be formed in small quantities. Shaping can be performed easily and at low cost.
〈実施例〉 以下１本発明の一実施例を図面に基づいて説明する。<Example> An embodiment of the present invention will be described below with reference to the drawings.
実施例で成形する加飾成形品１１は、第４図に示すよう
に同一断面を有する半割筒状のインストルメントパネル
であり、アンダカツト部１１ａを備えるとともに、その
外表面１１ｂ全面にシボ模様が賦形されている。The decorative molded product 11 molded in this example is a half-cylindrical instrument panel having the same cross section as shown in FIG. It is shaped.
そして、この加Ｓ成形品１１は、第１図に示すような、
ＰＶＣ等の合成樹脂材料からなり、加飾成形品１１と略
同−形状としてアンダカツト部１２ａを備えている樹脂
成形品１２が、軟化状態となって真空引きされ、その表
面にシボ模様を賦形されて形成されている。The processed S-molded product 11 is as shown in FIG.
A resin molded product 12 made of a synthetic resin material such as PVC and provided with an undercut portion 12a having approximately the same shape as the decorative molded product 11 is softened and vacuumed to form a textured pattern on its surface. has been formed.
シボ模様を賦形する真空成形用の金型１４は。A mold 14 for vacuum forming forms a grain pattern.
第１図に示すように、シート型１５と、２つの枠体１７
・１８が合体して形成される保持枠１６とから構成され
ている。As shown in FIG. 1, a sheet mold 15 and two frames 17
・It is composed of a holding frame 16 formed by combining the holding frames 18 and 18.
シート型１５は、厚さ０．１〜０．５ｍｍ程度のステン
レス鋼板からなり、可撓性を有するとともに、裏面に樹
脂成形品１２にシボ模様を賦形可撤な型面１５ａを備え
、かつ、表裏を貢〈複数の通気孔１５ｂを備えている。The sheet mold 15 is made of a stainless steel plate with a thickness of about 0.1 to 0.5 mm, has flexibility, and has a removable mold surface 15a for forming a grain pattern on the resin molded product 12 on the back side. , the front and back sides are provided with a plurality of ventilation holes 15b.
このシートを１５の製造は、ステンレス鋼板にプレス加
工・エツチング加工等を行なって所定の型面１５ａを形
成し、そして、レーザ加工・プレス加工等を行なって通
気孔１５ｂ（１３＄１口径２μｍ〜１１瓢程度）を形成
して製造するものである。勿論、１度のプレス加工で型
面１５ａと通気孔１５ｂを形成してもよい。To manufacture this sheet 15, press working, etching, etc. are performed on a stainless steel plate to form a predetermined mold surface 15a, and then laser working, pressing, etc. are performed to form ventilation holes 15b (13 $1 diameter 2 μm ~ It is manufactured by forming about 11 gourds. Of course, the mold surface 15a and the ventilation holes 15b may be formed in one press process.
保持枠１６を構成している枠体１７・１８は。The frame bodies 17 and 18 that constitute the holding frame 16 are as follows.
各々木型であり、各々内周面１７ａφ１８ａから外周面
１７ｂφ１８ｂにかけて複数の通気孔１７Ｃ６１８Ｇが
穿設されるとともに、各々の内周面１７ａ＊ １８ａが
、両者が合体した際に樹脂成形品１２の外形と略同形の
内周部ｌｅａを形成するよう切削されている（第１−３
図参照）。Each has a wooden shape, and a plurality of ventilation holes 17C618G are bored from the inner circumferential surface 17aφ18a to the outer circumferential surface 17bφ18b, and each inner circumferential surface 17a*18a has the outer shape of the resin molded product 12 when both are combined. (No. 1-3)
(see figure).
なお、枠体１７・１Ｂは１合体する際、各々の外周面１
７ｂや１８ｂに配設された図示しないフックと保合ピン
との係合によって組付けられるよう構成されている。In addition, when the frames 17 and 1B are combined, each outer peripheral surface 1
It is configured to be assembled by engaging a retaining pin with a hook (not shown) provided on 7b or 18b.
また、２０は１合体した保持枠１６外周面を蓋体２０ｄ
が覆って、保持枠内周部１６ａからエアを吸引する吸引
手段であり、真空ポンプ２０ａ参アキユムレータ２０ｂ
−バルブ２０ｃ等から構成されている。In addition, 20 refers to the outer peripheral surface of the combined holding frame 16 as the lid body 20d.
is a suction means for sucking air from the inner peripheral part 16a of the holding frame, and includes the vacuum pump 20a and the accumulator 20b.
- It is composed of a valve 20c and the like.
つぎに、これらの装置を使用して樹脂成形品１２表面に
シボ模様を賦形させる工程を説明する。Next, a process of forming a grain pattern on the surface of the resin molded product 12 using these devices will be explained.
まず、４＃脂成形品１２を軟化状態にする。First, the 4# fat molded product 12 is softened.
ちなみに、第５〜６図に示すように、樹脂シート２２を
加熱して軟化状態にした後、通気孔２４ａを備える真空
成形用の金型２４を利用して真空引きし、所定形状に賦
形し、直ちにＪｌｆｆｉさせれば、軟化状態（特に表面
側）の４Ｍ脂成形品１２を得ることができ、このように
樹脂成形品１２を真空成形すれば、その成形品１２の形
成が簡便・安価となるとともに、樹脂成形品１２を軟化
状態とする加熱工程を省略することができる。勿論、樹
脂成形品１２をブロー成形、射出成形等で形成し、一旦
その樹脂成形品１２が冷却された状態になった場合には
、ヒータ等を利用して軟化状態（特に表面側）になるま
で加熱する必要がある。Incidentally, as shown in FIGS. 5 and 6, after the resin sheet 22 is heated to a softened state, it is evacuated using a vacuum molding mold 24 equipped with ventilation holes 24a and shaped into a predetermined shape. However, if Jlffi is applied immediately, a 4M resin molded product 12 in a softened state (especially on the surface side) can be obtained.If the resin molded product 12 is vacuum formed in this way, the molded product 12 can be formed easily and inexpensively. At the same time, the heating step for softening the resin molded product 12 can be omitted. Of course, when the resin molded product 12 is formed by blow molding, injection molding, etc., and once the resin molded product 12 is in a cooled state, it is softened (especially on the surface side) using a heater or the like. It needs to be heated up to.
その後、第２図に示すように、軟化状態にある樹脂成形
品１２表面に型面１５ａが接触するようにシート型１５
を被濱させる（シート塁被覆工程）、なお、９は基台で
ある。Thereafter, as shown in FIG.
(sheet base covering step), 9 is a base.
そして、シート型１５表面に各々の内周部１７ａｓ １
８ａが接触するよう、枠体１７・１８を合体させて、保
持枠１６の内周ｆｌ！１１６ａでシート型１５を真空、
ＩＩき時に移動しないよう保持させ、その保持枠１Ｂの
外周に吸引手段２０の蓋体２０ｄを配設させる（保持枠
セット工程、第３図参照）その後、真空ポンプ２０ａを
作動させるとともにバルブ２０ｃを開き、保持枠１６に
おける枠体１７−１８の通気孔１７ｃ＊１８ｃ、シート
型１５の通気孔１５ｂを介してエアを抜き、樹脂成形品
１２を真空引きする（賦形工程）、すると、樹脂成形品
１２はシート型１５の型面１５ａにより所定のシボ模様
を転写される。その際、シート型１５が継ぎ目のない一
枚のシートから形成されていることから、樹脂成形品１
２表面にはシボ模様だけが転写される。Then, on the surface of the sheet mold 15, each inner peripheral portion 17as 1
The frames 17 and 18 are combined so that the inner circumference fl! of the holding frame 16 is in contact with the inner circumference fl! Vacuum the sheet mold 15 at 116a,
The lid 20d of the suction means 20 is placed around the outer periphery of the holding frame 1B (holding frame setting step, see Figure 3).Then, the vacuum pump 20a is activated and the valve 20c is closed. The resin molded product 12 is evacuated (forming process) by opening the holding frame 16 and removing air through the ventilation holes 17c*18c of the frames 17-18 and the ventilation holes 15b of the sheet mold 15 (forming process). A predetermined grain pattern is transferred to the product 12 by the mold surface 15a of the sheet mold 15. At that time, since the sheet mold 15 is formed from one seamless sheet, the resin molded product 1
2 Only the grain pattern is transferred to the surface.
そして、その後、所定時間冷却させて離型させ、端末処
理すれば、従来生じていた分割線が賦形されていない、
所定のシボ模様だけが賦形された加飾成形品１１を得る
ことができる。After that, if you let it cool for a predetermined period of time, release it, and process the ends, the parting line that conventionally occurs will not be shaped.
It is possible to obtain a decorative molded product 11 in which only a predetermined grain pattern is formed.
そして、その成形に使用した金型１４は、既述のように
容易に製造することができる。The mold 14 used for the molding can be easily manufactured as described above.
なお、実施例では、保持枠１６として、木型からなる２
つの枠体１７・１８から構成するものを示したが、必要
に応じて、３つ以上の枠体から構成してもよく、さらに
、木型でなくとも、第７図に示すように、各々内周面２
７ａ・２８ａから外周面２７ｂ・２８ｂにかけて小径（
１〜１００ルｍ程度）の通気孔２７ｃ・２８ｃが連通し
ているセラミック等からなるポーラスな枠体２７０２８
から保持枠２６を構成してもよい、また、セラミック等
のポーラスな材料を、第８図に示すように、各々の内周
面３７ａ・３８ａに配置させ、それら内周面３７ａ＊３
８ａを支持脚３７ｄ−３８ｄで支持する枠体３７−３８
からなる保持枠３６を使用してもよい、なお、３７ｅ拳
３８ｅは通気孔である。In the embodiment, the holding frame 16 is made of a wooden mold.
Although the structure shown is composed of two frames 17 and 18, it may be composed of three or more frames if necessary.Furthermore, as shown in FIG. Inner peripheral surface 2
A small diameter (
A porous frame 27028 made of ceramic or the like with which ventilation holes 27c and 28c (approximately 1 to 100 lm) are connected.
Alternatively, a porous material such as ceramic may be arranged on each of the inner peripheral surfaces 37a and 38a, as shown in FIG.
Frame bodies 37-38 that support 8a with support legs 37d-38d
A holding frame 36 consisting of the following may be used. Note that 37e and fist 38e are ventilation holes.
また、実施例では、シボ模様を賦形した後、直ちに製品
とするものを示したが、第９−１０図に示すように、実
施例と上下逆方向でシボ模様を賦形させた後、金型４４
を樹脂成形品１２の内周に挿入し、その型面４４ａと樹
脂成形品１２の内周面との間に発泡ウレタン等を充填し
１表皮４１Ａと発泡層４１Ｂとからなる加飾成形品４１
を得るようにしてもよい。In addition, in the example, the product was immediately formed after forming the grain pattern, but as shown in Figures 9-10, after forming the grain pattern in the upside down direction from the example, Mold 44
is inserted into the inner periphery of the resin molded product 12, and foamed urethane or the like is filled between the mold surface 44a and the inner periphery of the resin molded product 12 to form a decorative molded product 41 consisting of a skin 41A and a foam layer 41B.
You may also obtain
第１図は本発明の一実施例に使用する成形用金型の分解
断面図、第２図は同実施例におけるシート型被覆工程時
の断面図、第３図は同実施例における保持枠セット工程
時の断面図、第４図は同実施例により成形する成形品の
断面図、第５図・第６図は同実施例に使用する樹脂成形
品を成形する工程を順に示す図、第７図会第８図はそれ
ぞれ保持枠の他の例を示す断面図、第９図は同実施例を
応用した成形例を示す断面図、第１０図はその成形によ
り製造した成形品の断面図、第１１図−第１２図は従来
の成形工程を順に示す断面図、第１３図は従来の成形方
法により製造した成形品の断面図である。
２会１２・・・樹脂成形品、
２ａｌＩ１２ａ・・・アンダカツト部、４・１４・・・
金型。
１０φ２０・・・吸引手段、
１５・・・シート型。
１５ａ・・・型面、
１５ｂ・・・通気孔。
１６−２６−３６・・・保持枠、
１６ａ・・・内周部、
１７・１８・２７・２８・３７・３８・・・枠体。
’＋ｌＡ４１ＭFigure 1 is an exploded sectional view of a molding die used in an embodiment of the present invention, Figure 2 is a sectional view during the sheet mold coating process in the same embodiment, and Figure 3 is a holding frame set in the same embodiment. 4 is a cross-sectional view of a molded product molded according to the same embodiment; FIGS. 5 and 6 are views sequentially showing the steps of molding the resin molded product used in the same embodiment; FIG. Figure 8 is a cross-sectional view showing another example of the holding frame, Figure 9 is a cross-sectional view showing a molding example applying the same example, and Figure 10 is a cross-sectional view of a molded product manufactured by the molding. 11 and 12 are cross-sectional views sequentially showing conventional molding steps, and FIG. 13 is a cross-sectional view of a molded product manufactured by the conventional molding method. 2nd meeting 12... Resin molded product, 2alI12a... Undercut part, 4/14...
Mold. 10φ20...Suction means, 15...Sheet type. 15a...Mold surface, 15b...Vent hole. 16-26-36... Holding frame, 16a... Inner peripheral portion, 17, 18, 27, 28, 37, 38... Frame body. '+lA41M
Claims (1)
面に真空引きして所定の凹凸模様を賦形させる真空成形
方法であつて、下記工程を具備することを特徴とする真
空成形方法。 （１）表裏を貫く複数の通気孔を備えかつ裏面に前記凹
凸模様を賦形可能な型面を備えて可撓性を有するシート
型を前記樹脂成形品表面に被覆させるシート型被覆工程
。 （２）吸引手段に連結されて複数の枠体からなる保持枠
をシート型被覆工程後の前記シート型表面に配置させ、
前記シート型を保持する保持枠セット工程。 （３）前記吸引手段を作動させ、前記樹脂成形品を真空
引きし、前記樹脂成形品表面に前記シート型型面により
前記凹凸模様を賦形させる賦形工程。 ２、軟化状態のアンダカツト部を備える樹脂成形品の表
面に真空引きして所定の凹凸模様を賦形させる真空成形
方法に使用する成形用金型であつて表裏を貫く複数の通
気孔を備えかつ裏面に前記凹凸模様を賦形可能な型面を
備えて、前記樹脂成形品表面を被覆可能な可撓性を有す
るシート型と、 吸引手段に連結され、前記樹脂成形品表面を被覆した前
記シート型表面を保持可能な前記樹脂成形品の外形に対
応する内周部を備え、複数の枠体に分割可能な保持枠と
、 から構成されることを特徴とする成形用金型。[Claims] 1. A vacuum forming method in which a predetermined uneven pattern is formed by applying vacuum to the surface of a resin molded product having an undercut portion in a softened state, characterized by comprising the following steps: Vacuum forming method. (1) A sheet mold covering step in which the surface of the resin molded product is coated with a flexible sheet mold that has a plurality of ventilation holes passing through the front and back sides and has a mold surface on the back surface of which can form the uneven pattern. (2) disposing a holding frame connected to a suction means and consisting of a plurality of frames on the surface of the sheet mold after the sheet mold coating step;
a holding frame setting step for holding the sheet mold; (3) A forming step of activating the suction means to vacuum the resin molded product and forming the uneven pattern on the surface of the resin molded product using the sheet mold surface. 2. A molding die used in a vacuum forming method in which a predetermined uneven pattern is formed by applying a vacuum to the surface of a resin molded product having an undercut portion in a softened state, and which is equipped with a plurality of ventilation holes passing through the front and back sides. a sheet mold having a mold surface capable of forming the uneven pattern on the back surface and having flexibility capable of covering the surface of the resin molded product; and the sheet connected to a suction means and covering the surface of the resin molded product. A molding die comprising: a holding frame that is divisible into a plurality of frame bodies and has an inner peripheral portion that corresponds to the outer shape of the resin molded product that can hold the mold surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61099854A JPS62256630A (en) | 1986-04-30 | 1986-04-30 | Vacuum molding method and molding die therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61099854A JPS62256630A (en) | 1986-04-30 | 1986-04-30 | Vacuum molding method and molding die therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62256630A true JPS62256630A (en) | 1987-11-09 |
Family
ID=14258389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61099854A Pending JPS62256630A (en) | 1986-04-30 | 1986-04-30 | Vacuum molding method and molding die therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62256630A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2842135A1 (en) * | 2002-07-15 | 2004-01-16 | Autobar Packaging France | Decorative plastics pot is produced in a mold by post-shaping a hollow preform, using inner heat to force its structure against the mold cavity wall, with moving half-shells for the molding space and molding removal |
| EP3326782A1 (en) * | 2016-11-28 | 2018-05-30 | Synerlink | Undercut pots, moulds, moulding apparatouses and production lines for making undercut pots |
-
1986
- 1986-04-30 JP JP61099854A patent/JPS62256630A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2842135A1 (en) * | 2002-07-15 | 2004-01-16 | Autobar Packaging France | Decorative plastics pot is produced in a mold by post-shaping a hollow preform, using inner heat to force its structure against the mold cavity wall, with moving half-shells for the molding space and molding removal |
| EP1384563A1 (en) * | 2002-07-15 | 2004-01-28 | Autobar Packaging France | Method for manufacturing a hollow container with post forming in mould |
| EP3326782A1 (en) * | 2016-11-28 | 2018-05-30 | Synerlink | Undercut pots, moulds, moulding apparatouses and production lines for making undercut pots |
| FR3059306A1 (en) * | 2016-11-28 | 2018-06-01 | Synerlink | COUNTER-MILLING POTS, MOLDING MOLDS, FORMING MACHINES AND LINES FOR MANUFACTURING MOLTEN-COUNTER POTS |
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