JP2520624Y2 - Vacuum press molding equipment such as SMC - Google Patents
Vacuum press molding equipment such as SMCInfo
- Publication number
- JP2520624Y2 JP2520624Y2 JP12267290U JP12267290U JP2520624Y2 JP 2520624 Y2 JP2520624 Y2 JP 2520624Y2 JP 12267290 U JP12267290 U JP 12267290U JP 12267290 U JP12267290 U JP 12267290U JP 2520624 Y2 JP2520624 Y2 JP 2520624Y2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- cavity
- mold
- press molding
- smc
- 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
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は、SMC等の真空プレス成形装置に関し、特に
高い真空状態にできて、成形品の品質の向上がはかれる
SMC等の真空プレス成形装置に関する。[Detailed Description of the Invention] Industrial Field of the Invention The present invention relates to a vacuum press molding apparatus such as SMC, which can achieve a particularly high vacuum state and improve the quality of a molded product.
The present invention relates to a vacuum press molding device such as SMC.
従来の技術 従来、SMCや熱可塑性樹脂等のシート材のプレス成形
にあっては、プレス成形装置の下金型と上金型を合せる
ときに金型のキャビティを気密にし、キャビティを真空
タンクに接続して脱気してシート材をプレス成形するこ
とが行なわれている。Conventional technology Conventionally, in press molding of sheet materials such as SMC and thermoplastic resin, when the lower mold and the upper mold of the press molding device are matched, the mold cavity is made airtight and the cavity is used as a vacuum tank. A sheet material is press-molded by connecting and deaerating.
考案が解決しようとする課題 しかし、従来のものでは、予め真空タンクを真空ポン
プで所定の真空度にし、シート材のプレス成形時に上記
真空タンクをキャビティと連通状態としてキャビティ内
を減圧しているものであった。However, in the conventional one, the vacuum tank is previously made to have a predetermined vacuum degree by a vacuum pump, and when the sheet material is press-molded, the vacuum tank is communicated with the cavity to reduce the pressure in the cavity. Met.
そのため、金型のキャビティ内を迅速に脱気できて好
ましいが、ある程度の真空状態、たとえば100〜120mmHg
（ゲージ圧、以下同じ）といった真空度にできるが、そ
れ以上の高い真空状態とすることはできず、複雑なキャ
ビティ形状や凹所がある金型ではシート材がキャビティ
に十分に流動せず充填できなかった。そのため、成形品
の一部に欠肉状態が発生したり、外観が劣ったりするこ
とがあり品質の向上が望まれていた。Therefore, it is preferable that the inside of the cavity of the mold can be quickly degassed, but some degree of vacuum, for example, 100 to 120 mmHg
(Gauge pressure, the same applies to the following), but it is not possible to create a higher vacuum state, and in a mold with a complicated cavity shape or recess, the sheet material does not flow sufficiently into the cavity and is filled. could not. Therefore, there is a case where a part of the molded product is lacking in wall thickness and the appearance is inferior, so that improvement in quality has been desired.
課題を解決するための手段 本考案は、上記のような点に鑑みたもので、上記の課
題を解決するために、プレス成形装置の下金型と上金型
とを合せるときに、金型のキャビティ部を気密にしてキ
ャビティ内を脱気してプレス成形するSMC等の真空プレ
ス成形装置において、下金型に上金型を合せるときに、
予め真空ポンプで所定の真空度に保持した真空タンクと
金型のキャビティとを連通自在に配管接続し、金型のキ
ャビティ内を所定の真空状態としたときに、金型のキャ
ビティと真空タンクとの連通状態を遮断して、キャビテ
ィと真空ポンプを連通自在に配管接続したことを特徴と
するSMC等の真空プレス成形装置を提供するにある。Means for Solving the Problems The present invention has been made in view of the above points, and in order to solve the above problems, when a lower mold and an upper mold of a press molding device are matched, In a vacuum press molding device such as SMC that air-tightens the cavity part of the cavity and degass the inside of the cavity, when aligning the upper mold with the lower mold,
A vacuum tank previously held at a predetermined vacuum degree with a vacuum pump and a mold cavity are connected by piping so that they can communicate freely, and when the inside of the mold cavity is set to a predetermined vacuum state, the mold cavity and the vacuum tank It is an object of the present invention to provide a vacuum press forming apparatus such as SMC, which is characterized in that the cavity and the vacuum pump are connected by piping so as to be able to communicate with each other by interrupting the communication state of.
作用 本考案にあっては、SMC等のシート材をプレス成形す
る際に、金型のキャビティと真空タンクを連通すること
によって、キャビティ内を急速に脱気できて100〜120mm
Hgの真空度とすることができる。Function In the present invention, when the sheet material such as SMC is press-molded, the cavity of the mold and the vacuum tank are communicated with each other, so that the inside of the cavity can be rapidly degassed to 100 to 120 mm.
The vacuum degree can be Hg.
そして、キャビティを真空ポンプと連通することによ
って、真空ポンプでキャビティ内を高い真空状態に吸引
することができ、シート材をキャビティに十分に流動し
て充填できて、所望のプレス成形ができる。By communicating the cavity with the vacuum pump, the inside of the cavity can be sucked to a high vacuum state by the vacuum pump, the sheet material can be sufficiently flowed and filled in the cavity, and desired press molding can be performed.
実施例 以下、本考案を実施例にもとづいて説明する。Embodiment Hereinafter, the present invention will be described based on an embodiment.
添付図は、本考案の一実施例である。プレス成形装置
１は、図のようにベッド２に下金型３を取り付け、スラ
イド４に上金型５を取り付けるとともに上金型５の周囲
に気密壁６を配設し、この気密壁６と下金型と３との間
にＯ−リング状のシール材７を設けて、SMCや熱可塑性
樹脂等のシート材料８をキャビティ９に高い真空状態で
プレス成形できるようにしている。The attached drawing is an embodiment of the present invention. In the press molding apparatus 1, as shown in the figure, the lower mold 3 is attached to the bed 2, the upper mold 5 is attached to the slide 4, and the airtight wall 6 is arranged around the upper mold 5, and the airtight wall 6 and An O-ring seal material 7 is provided between the lower mold and the die 3 so that the sheet material 8 such as SMC or thermoplastic resin can be press-molded into the cavity 9 in a high vacuum state.
金型10の下金型３と上金型５とで形成されるキャビテ
ィ９を高い真空状態とするのは、図のように気密壁６の
連通部11に真空引用配管12を配管接続して、予め真空ポ
ンプ13で100〜120mmHgの真空度とした所定容量の真空タ
ンク14と真空ポンプ13とでキャビティ９を真空状態とす
ることができるためである。The cavity 9 formed by the lower mold 3 and the upper mold 5 of the mold 10 is brought into a high vacuum state by connecting the vacuum reference pipe 12 to the communicating portion 11 of the airtight wall 6 as shown in the figure. This is because the cavity 9 can be brought to a vacuum state by the vacuum pump 14 and the vacuum tank 14 having a predetermined capacity, which has been set in advance to a vacuum degree of 100 to 120 mmHg by the vacuum pump 13.
すなわち、図のように真空引用配管12に真空タンク用
逆止弁15、真空タンク用切替弁16を介して真空タンク14
を配管接続し、下金型３に上金型５を合せるときに、真
空タンク用切替弁16を開いてキャビティ９と真空タンク
14とを連通して急速に脱気し、100〜120mmHgの真空度に
できるようにしている。That is, as shown in the figure, the vacuum tank 14 is connected to the vacuum reference pipe 12 via the vacuum tank check valve 15 and the vacuum tank switching valve 16.
When connecting the lower mold 3 to the upper mold 5, the vacuum tank switching valve 16 is opened to open the cavity 9 and the vacuum tank.
It communicates with 14 and rapidly degass so that a vacuum degree of 100-120 mmHg can be achieved.
また、図のように真空引用配管12に真空ポンプ逆止弁
17、真空ポンプ用切替弁18を介して真空ポンプ13を配管
接続し、上記のようにキャビティ９を急速に脱気した後
に、真空タンク用切替弁16を遮断して真空ポンプ13でキ
ャビティ９内を真空引きして所望の600〜700mmHg、場合
によっては700mmHg以上といった高い真空状態としてシ
ート材料８をキャビティ９に流動充填できるようにして
いる。19はキャビティ用圧力スイッチ、20はフィルタ
ー、21はプレス成形後に真空を解除する真空解放弁、22
は真空タンク用圧力スイッチ、23は真空タンク吸引用切
替弁、24はコンデンサー、25はトラップである。なお、
本装置は、図のように真空タンク回路26、真空ポンプ回
路27からそれぞれ分岐回路28、29を分岐して、他のプレ
ス成形装置１についても並行して同様にキャビティを真
空状態としてプレス成形できるように配管接続してい
る。In addition, as shown in the figure, the vacuum pump check valve 12
17, the vacuum pump 13 is connected to the pipe via the vacuum pump switching valve 18, the cavity 9 is rapidly degassed as described above, and then the vacuum tank switching valve 16 is shut off so that the inside of the cavity 9 is closed by the vacuum pump 13. Is evacuated to a desired high vacuum state of 600 to 700 mmHg, and in some cases 700 mmHg or more, so that the sheet material 8 can be fluidly filled in the cavity 9. 19 is a cavity pressure switch, 20 is a filter, 21 is a vacuum release valve that releases the vacuum after press molding, 22
Is a vacuum tank pressure switch, 23 is a vacuum tank suction switching valve, 24 is a condenser, and 25 is a trap. In addition,
In this apparatus, branch circuits 28 and 29 are branched from the vacuum tank circuit 26 and the vacuum pump circuit 27, respectively, as shown in the figure, and the other press molding apparatuses 1 can perform press molding in parallel with the cavity in a vacuum state. So that the pipes are connected.
しかして、真空タンク吸引用切替弁23を閉じ、真空ポ
ンプ用切替弁18を閉じて、真空タンク用切替弁16を開け
ば、真空タンク14によってキャビティ９内を100〜120mm
Hgの真空度に急速に脱気処理することができる。Then, if the vacuum tank suction switching valve 23 is closed, the vacuum pump switching valve 18 is closed, and the vacuum tank switching valve 16 is opened, the inside of the cavity 9 is 100 to 120 mm by the vacuum tank 14.
It can be rapidly degassed to a vacuum degree of Hg.
そして、真空タンク用切替弁16を閉じ、真空ポンプ用
切替弁18を開けば、真空ポンプ13でキャビティ９内を真
空引きできて高い真空状態にできる。Then, by closing the vacuum tank switching valve 16 and opening the vacuum pump switching valve 18, the inside of the cavity 9 can be evacuated by the vacuum pump 13 and a high vacuum state can be obtained.
したがって、キャビティ内に局所的に空気が停滞する
のを防止でき、キャビティにそってシート材料を均一
に、かつ十分に流動充填できて、品質のよい成形品をプ
レス成形できる。Therefore, it is possible to prevent the air from locally stagnating in the cavity, to uniformly and sufficiently fluidly fill the sheet material along the cavity, and to press-mold a high-quality molded product.
特に、上記のように真空タンクと真空ポンプとを利用
するので、キャビティ内を迅速に高い真空状態にでき、
600mmHg以下に吸引することも可能である。In particular, since the vacuum tank and the vacuum pump are used as described above, the inside of the cavity can be quickly brought to a high vacuum state,
It is also possible to suction below 600 mmHg.
キャビティ９の真空度は、キャビティ用圧力スイッチ
19の調整でシート材料８の特性に対応して適宜に調整可
能であり、また真空タンク14についても真空タンク用圧
力スイッチ22で調整可能である。The degree of vacuum of the cavity 9 is controlled by the pressure switch for the cavity.
By adjusting 19, it is possible to adjust appropriately according to the characteristics of the sheet material 8, and the vacuum tank 14 can also be adjusted by the vacuum tank pressure switch 22.
なお、実施例では、プレスのスケージュールにしたが
って、分岐回路を利用して複数のプレス成形装置のプレ
ス成形についても、並行して高い真空状態でプレス成形
することができる。In addition, in the embodiment, according to the schedule of the press, the press forming of a plurality of press forming apparatuses using the branch circuit can be performed in parallel in a high vacuum state.
考案の効果 以上のように本考案にあっては、真空タンクおよび真
空ポンプを併用したので、金型のキャビティ内を高い真
空状態とすることができ、十分に脱気処理できてシート
材料をキャビティ内に均一に、かつ十分に流動充填する
ことができて、欠肉の生じない、外観が良好な成形品を
プレス成形することができる。Effects of the Invention As described above, in the present invention, since the vacuum tank and the vacuum pump are used together, the inside of the cavity of the mold can be in a high vacuum state, and the degassing process can be sufficiently performed to make the sheet material into the cavity. It is possible to press-mold a molded product that can be uniformly and sufficiently fluid-filled in the inside and has no appearance of defects and a good appearance.
添付図は、本考案の一実施例の真空引き説明用回路図で
ある。 １……プレス成形装置、３……下金型、５……上金型、
８……シート材料、９……キャビティ、10……金型、13
……真空ポンプ、14……真空タンク。The attached drawing is a circuit diagram for explaining an evacuation of one embodiment of the present invention. 1 ... Press molding device, 3 ... Lower mold, 5 ... Upper mold,
8 ... Sheet material, 9 ... Cavity, 10 ... Mold, 13
... vacuum pump, 14 ... vacuum tank.
Claims (1)
るときに、金型のキャビティ部を気密にしてキャビティ
内を脱気してプレス成形するSMC等の真空プレス成形装
置において、 下金型に上金型を合せるときに、予め真空ポンプで所定
の真空度に保持した真空タンクと金型のキャビティとを
連通自在に配管接続し、 金型のキャビティ内を所定の真空状態としたときに、金
型のキャビティと真空タンクとの連通状態を遮断して、
キャビティと真空ポンプを連通自在に配管接続したこと
を特徴とするSMC等の真空プレス成形装置。1. A vacuum press molding apparatus such as an SMC that press-molds the cavity of the mold by air-tightening the cavity of the mold when the lower mold and the upper mold of the press molding device are fitted together, When fitting the upper mold to the lower mold, connect the vacuum tank, which was previously held at a predetermined vacuum degree with a vacuum pump, and the mold cavity so that they can communicate with each other by piping so that the inside of the mold cavity is in a predetermined vacuum state. Then, the communication between the cavity of the mold and the vacuum tank is shut off,
Vacuum press molding equipment such as SMC, which is characterized by connecting the cavity and the vacuum pump so that they can communicate freely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12267290U JP2520624Y2 (en) | 1990-11-22 | 1990-11-22 | Vacuum press molding equipment such as SMC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12267290U JP2520624Y2 (en) | 1990-11-22 | 1990-11-22 | Vacuum press molding equipment such as SMC |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0479612U JPH0479612U (en) | 1992-07-10 |
| JP2520624Y2 true JP2520624Y2 (en) | 1996-12-18 |
Family
ID=31870433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12267290U Expired - Fee Related JP2520624Y2 (en) | 1990-11-22 | 1990-11-22 | Vacuum press molding equipment such as SMC |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2520624Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11052581B2 (en) | 2016-06-17 | 2021-07-06 | Honda Motor Co., Ltd. | Molding method and molding system for resin molded member |
-
1990
- 1990-11-22 JP JP12267290U patent/JP2520624Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11052581B2 (en) | 2016-06-17 | 2021-07-06 | Honda Motor Co., Ltd. | Molding method and molding system for resin molded member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0479612U (en) | 1992-07-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |