JPS62127224A - Vacuum forming device - Google Patents
Vacuum forming deviceInfo
- Publication number
- JPS62127224A JPS62127224A JP26881085A JP26881085A JPS62127224A JP S62127224 A JPS62127224 A JP S62127224A JP 26881085 A JP26881085 A JP 26881085A JP 26881085 A JP26881085 A JP 26881085A JP S62127224 A JPS62127224 A JP S62127224A
- Authority
- JP
- Japan
- Prior art keywords
- forming
- molding
- molding material
- mold
- vacuum
- 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.)
- Granted
Links
Landscapes
- 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、真空成形時においてシート状の成形材料の伸
び量の大きい部位の伸びを少な（して、成形材料の厚さ
を確保することができる真空成形装置に関するものであ
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to reducing the elongation of a sheet-shaped molding material in a region where the elongation is large during vacuum forming, thereby ensuring the thickness of the molding material. The present invention relates to a vacuum forming apparatus that can perform
従来、合成樹脂材料からなるシート状の成形材料を成形
する際には、第３図に示すような成形型を利用して真空
成形が行なわれている。Conventionally, when molding a sheet-like molding material made of a synthetic resin material, vacuum molding is performed using a mold as shown in FIG.
第３図において、５１は成形型であって、この成形型５
１には空洞部５２が形成されており、その空洞部５２に
は真空装置（図示せず）に通ずるバイブ５３が形成され
ている。また、成形型５１の成形面５１ａには空洞部５
２に通ずる複数個の真空引き孔（図示せず）が形成され
ている。In FIG. 3, 51 is a mold, and this mold 5
1 has a cavity 52 formed therein, and a vibrator 53 connected to a vacuum device (not shown) is formed in the cavity 52. Further, a cavity 5 is provided on the molding surface 51a of the mold 51.
A plurality of vacuum holes (not shown) are formed which communicate with 2.
そして、成形材料Ｍを成形する際には、成形材料Ｍを成
形しようとする大きさよりも大きめに裁断し、第３図（
ａ）に示すようにクランプ５４によって成形材料Ｍの二
辺もしくは四辺を保持すると共に、成形型５１とヒータ
５５との間に配設して加熱する０次に、第３図の（ｂ）
に示すようにヒータ５５を後退させると共に、成形型５
１を上昇させる。これによって、第３図（ｃ）に示すよ
うに成形型５１の成形面５１ａ側の全てが成形材料Ｍで
覆われる。この状態で、第３図の（ｄ）に示すようにパ
イプ５３から真空引きが行なわれ、成形材料Ｍが成形面
５１ａ側に引き付けられて成形が行なわれるようになっ
ている。When molding the molding material M, the molding material M is cut to a size larger than the size to be molded, as shown in FIG.
As shown in FIG. 3(b), two or four sides of the molding material M are held by clamps 54 as shown in FIG.
As shown in FIG.
Increase 1. As a result, the entire molding surface 51a side of the molding die 51 is covered with the molding material M, as shown in FIG. 3(c). In this state, as shown in FIG. 3(d), the pipe 53 is evacuated, and the molding material M is attracted to the molding surface 51a to perform molding.
しかしながら、このような成形型を利用して真空成形す
る際には、成形型５１の成形面形状および外周形状で真
空成形時において引き付ける量の大きい部分の成形材料
ＭＩＪ＜薄くなって、成形材料Ｍに形成されたシボ模様
が消失することはもとより、成形時において薄くなる部
位の成形材料Ｍが破れる不具合がある。However, when performing vacuum forming using such a mold, the molding surface shape and outer peripheral shape of the molding mold 51 may be such that the molding material MIJ is thinner than the molding material MIJ in the portion that attracts a large amount during vacuum molding. There is a problem that not only the grain pattern formed on the molding material M disappears, but also that the molding material M is torn in areas where it becomes thinner during molding.
従って、この発明は、上記の不具合を解消するためにな
されたもので、成形材料の厚さを確保したい部位に対応
する成形型の端部に刃具を設け、成形材料が成形型に張
架される際に、その部位をカットすることによって、成
形材料の伸びを防いで、シボ模様の消失および成形材料
の破れを防止せしめることにある。Therefore, this invention was made to solve the above-mentioned problems, and a cutting tool is provided at the end of the mold corresponding to the part where the thickness of the molding material is desired to be ensured, and the molding material is stretched over the mold. The purpose of this is to prevent the molding material from elongating, thereby preventing the grain pattern from disappearing and the molding material from tearing, by cutting that area during molding.
すなわち、この発明に係る真空成形装置においては、空
洞部が形成されている成形型の成形面に、空洞部に通ず
る複数個の真空引き孔を形成し、この成形型の成形面側
に加熱されたシート状の成形材料を張架して空洞部から
真空引きする真空成形装置であって、前記真空成形され
る成形材料の厚みを確保せしめる部位に対応する成形型
の端部に、成形材料が成形型に張架される際に、その一
部をカントする刃具を設け、この刃具の内側成形面側に
刃具でカットされた成形材料のシール性を向上させるシ
ール部を形成したものである。That is, in the vacuum forming apparatus according to the present invention, a plurality of vacuum holes communicating with the cavity are formed in the molding surface of the mold in which the cavity is formed, and the molding surface side of the mold is heated. A vacuum forming apparatus that stretches a sheet-like molding material and draws a vacuum from the cavity, and the molding material is applied to an end of the mold corresponding to a part where the thickness of the molding material to be vacuum-formed is ensured. A cutter is provided to cant a part of the mold when it is stretched over the mold, and a sealing portion is formed on the inner molding surface side of the cutter to improve the sealing properties of the molding material cut by the cutter.
かかる、真空成形装置において、シート状の成形材料を
成形する際には、空洞部が形成されている成形型の成形
面の上方に成形材料をクランプした状態で配設すると共
に、ヒータ等の加熱手段によって成形材料を均等に加熱
する０次に、成形型を上昇させて成形材料で成形型を覆
う、そして、成形材料が成形型の成形面の最も高い縁部
と成形型の外周の接触部位とを結ぶ間で均一に張架され
た際に、成形型の端部に設けられている刃具によって成
形材料の一部がカットされる。In such a vacuum forming apparatus, when molding a sheet-like molding material, the molding material is placed in a clamped state above the molding surface of a mold in which a cavity is formed, and a heating device such as a heater is used. Then, the mold is raised to cover the mold with the molding material, and the molding material contacts the highest edge of the molding surface of the mold and the outer periphery of the mold. When the molding material is stretched uniformly between the two, a part of the molding material is cut by a cutting tool provided at the end of the mold.
そして、成形材料の一部がカットされると同時に、成形
型の成形面に形成されている複数個の真空引き孔から真
空引きを行なって成形する。この時、成形材料は成形面
側に張力が加えられて伸長した状態で引き付けられて成
形されると共に、カット部の成形材料は張力が加わらな
い状態でシール部を滑りつつ成形面側に引き付けられて
成形される。Then, at the same time as a part of the molding material is cut, a vacuum is drawn through a plurality of vacuum holes formed in the molding surface of the mold to perform molding. At this time, the molding material is drawn to the molding surface side in an elongated state with tension being applied, and the molding material at the cut part is drawn to the molding surface side while sliding on the seal part without any tension being applied. molded.
これによって、成形材料の厚みを確保したい部位はほと
んど伸長しない状態で成形が行なわれるので、成形材料
の厚さは薄くなることなく、成形を行なうことができる
。As a result, molding is performed with almost no elongation at the portion where the thickness of the molding material is desired, so that molding can be performed without reducing the thickness of the molding material.
以下、本発明の一実施例を図面に基づいて詳細に説明す
る。Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.
第１図は本発明に係る真空成形装置の一部を拡大した斜
視図、第２図は本発明に係る真空成形装置による成形方
法を説明する概略図である。FIG. 1 is a partially enlarged perspective view of a vacuum forming apparatus according to the present invention, and FIG. 2 is a schematic diagram illustrating a forming method using the vacuum forming apparatus according to the present invention.
第１図および第２図において、ｌは成形型であって、こ
の成形型ｌの上面には成形品の形状と略同−形状に形成
された凸状の成形部２が形成されており、合成樹脂材料
からシート状に形成された成形材料の成形面となってい
る。また、成形型ｌは内部に空洞部３が形成されており
、成形部２の角部近傍には空洞部３に通ずる複数個の真
空引き孔４が形成されている。In FIG. 1 and FIG. 2, l is a mold, and a convex molding part 2 is formed on the upper surface of this mold l to have approximately the same shape as the molded product. It is a molding surface of a molding material formed into a sheet shape from a synthetic resin material. Further, the mold l has a cavity 3 formed therein, and a plurality of vacuum holes 4 communicating with the cavity 3 are formed near the corners of the molding part 2 .
また、成形部２の一部には成形材料Ｍの厚さを確保する
ための凹状の成形面５が形成されており、その成形面５
に対応する成形型１の端部６には鋸歯形状の刃具７が設
けられている。そして、刃具７の大きさは成形面５の横
方向の幅よりもやや大きめにされており、成形材料Ｍが
成形型ｌに張架される際に、その一部がカットされるよ
うになっている。Further, a concave molding surface 5 is formed in a part of the molding part 2 to ensure the thickness of the molding material M.
A sawtooth-shaped cutter 7 is provided at the end 6 of the mold 1 corresponding to the . The size of the cutting tool 7 is made slightly larger than the width in the lateral direction of the molding surface 5, so that when the molding material M is stretched over the mold l, a part of it is cut. ing.
また、成形型ｌの上面には刃具７が設けられている内側
に断面が長三角形状のシール部８が形成されており、刃
具７でカットされた成形材料が接触してシール性が向上
されるようになっている。Furthermore, a sealing portion 8 having an elongated triangular cross section is formed on the upper surface of the mold l on the inside where the cutting tool 7 is provided, and the molding material cut by the cutting tool 7 comes into contact with the sealing portion 8 to improve sealing performance. It has become so.
そして、このシール部８は刃具７側が高くなっており、
順次低くなるように傾斜して形成され、成形面５の前方
で成形型ｌの上面と面一になっている。さらに、シール
部８は高い所でも刃具７よりも低く形成されており、幅
は成形面５の幅と略同−されている・
また、成形型１の底面にはパイプ９が接続されており、
その一端は成形型ｌの空洞部３に開放され、他端は図示
を省略した真空装置に接続されている。さらに、成形型
ｌの底部には図示を省略した昇降機が設けられており、
成形時において成形型ｌが上下動されるようになってい
る。This seal portion 8 is higher on the cutting tool 7 side,
It is formed to be inclined to become lower in sequence, and is flush with the upper surface of the mold l in front of the molding surface 5. Furthermore, the seal portion 8 is formed to be lower than the cutting tool 7 even at a high place, and its width is approximately the same as the width of the molding surface 5.In addition, a pipe 9 is connected to the bottom of the mold 1. ,
One end thereof is open to the cavity 3 of the mold 1, and the other end is connected to a vacuum device (not shown). Furthermore, an elevator (not shown) is provided at the bottom of the mold l.
The mold 1 is moved up and down during molding.
上記のように構成された真空成形装置において、合成樹
脂材料からシート状に形成された成形材料Ｍを成形する
際には、第２図の（ａ）に示すように成形材料Ｍの二辺
または四辺をクランプ具１０によって保持して成形型ｌ
の成形部２上にセットする０次に、この成形材料Ｍの上
方にヒータ１１を配設すると共に、成形材料Ｍを均等に
加熱する。In the vacuum forming apparatus configured as described above, when molding the molding material M formed into a sheet shape from a synthetic resin material, two sides of the molding material M or Holding the four sides with clamps 10, mold l
Next, a heater 11 is placed above the molding material M, and the molding material M is evenly heated.
そして、成形材料Ｍが均等に加熱されたところで、ヒー
タ１１を後退させる。Then, when the molding material M is evenly heated, the heater 11 is moved back.
つづいて、第２図の（ｂ）に示すように昇降機で成形型
１を上昇させ、成形材料Ｍによって成形型１を覆う、そ
して、成形材料Ｍが成形型１の成形部２の最も高い縁部
と成形型ｌの外周の接触部位とを結ぶ間で均一に張架さ
れた際に、成形型ｌの端部に設けられている刃具７によ
って成形材料Ｍの一部がカントされる。Next, as shown in FIG. 2(b), the mold 1 is raised by an elevator, and the mold 1 is covered with the molding material M, and the molding material M is applied to the highest edge of the molding part 2 of the mold 1. When the molding material M is stretched uniformly between the contact area on the outer periphery of the molding die l, a part of the molding material M is canted by the cutter 7 provided at the end of the molding die l.
そして、成形材料Ｍの一部がカットされると同時に、第
２図の（Ｃ）に示すように真空装置を作動させ、成形型
ｌの成形部２に形成されている複数個の真空引き孔４か
ら真空引きを行なって成形する。Then, at the same time as a part of the molding material M is cut, the vacuum device is activated as shown in FIG. From step 4, vacuum is applied and molded.
その時、成形材料Ｍば成形部２側に張力が加えられて伸
長した状態で引き付けられて成形されると共に、刃具７
でカットされた部位の成形材料Ｍはフリーになっている
ので、張力が加わらない状態でシール部８を漬りつつ成
形面５側に引き付けられて成形される。At that time, tension is applied to the molding material M on the molding part 2 side, and the molding material M is drawn in an elongated state and molded, and the cutting tool 7
Since the molding material M in the cut portion is free, it is drawn to the molding surface 5 side and molded while soaking the seal portion 8 without applying any tension.
これによって、成形材料の厚みを確保したい部位はほと
んど伸長しない状態で成形が行なわれるので、成形材料
Ｍの厚さは薄くなることなく、成形を行なうことができ
る。As a result, molding is performed with almost no elongation at the portion where the thickness of the molding material is desired, so that molding can be performed without reducing the thickness of the molding material M.
なお、上述の実施例においては、刃具７の取り付は位置
を１ケ所に限定して説明したが、本発明においては、こ
の実施例に限定されるものではなく、成形材料の厚みを
確保したい部位に対応する成形型の端部に複数個設ける
ことが！きる。In addition, in the above-mentioned embodiment, the mounting position of the cutting tool 7 was explained as being limited to one location, but the present invention is not limited to this embodiment, and it is necessary to ensure the thickness of the molding material. Multiple pieces can be provided at the end of the mold corresponding to the part! Wear.
以上説明したように、本発明に係る真空成形装置におい
ては、成形材料の厚さを確保したい部位に対応する成形
型の端部に刃具を設け、成形材料が成形型に張架される
際に、その部位をカットするようにしたから、真空成形
時において成形材料の伸びを防ぐことができるので、成
形材料のシボ模様の消失を防止することができる効果が
ある。As explained above, in the vacuum forming apparatus according to the present invention, a cutting tool is provided at the end of the mold corresponding to the part where the thickness of the molding material is desired to be ensured, and when the molding material is stretched over the mold, By cutting that part, it is possible to prevent the molding material from elongating during vacuum forming, which has the effect of preventing the grain pattern of the molding material from disappearing.
また、本発明に係る真空成形装置においては、真空成形
時において成形材料の伸びを防ぐことができることによ
って、成形材料の破れを防止することができる効果があ
る。Furthermore, the vacuum forming apparatus according to the present invention has the effect of preventing the molding material from being broken by preventing the molding material from elongating during vacuum forming.
また、本発明に係る真空成形装置においては、真空成形
時において成形材料の伸びを防ぐことができることによ
って、成形品の品質を向上させることができる効果があ
る。Further, the vacuum forming apparatus according to the present invention has the effect of improving the quality of the molded product by preventing elongation of the molding material during vacuum forming.
また、本発明に係る真空成形装置においては、成形材料
のサイズダウンによって、成形コストを低減することが
できる効果がある。Furthermore, the vacuum forming apparatus according to the present invention has the effect of reducing molding costs by reducing the size of the molding material.
第１図は本発明に係る真空成形装置の一部を拡大した斜
？Ｉ！図である。
第２図は本発明に係る真空成形装置による成形方法を説
明する概略図である。
第３図は従来の真空成形装置による成形方法を説明する
概略図である。
１・−・・成形型
２−・・−・成形部（成形面）
３−・・−空洞部
４・−・−・真空引き孔
５−・−成形面
６−−−一端部
７−・・−刃具
８−一一一〜−シール部FIG. 1 is an enlarged oblique view of a part of the vacuum forming apparatus according to the present invention. I! It is a diagram. FIG. 2 is a schematic diagram illustrating a molding method using a vacuum molding apparatus according to the present invention. FIG. 3 is a schematic diagram illustrating a forming method using a conventional vacuum forming apparatus. 1.--Molding mold 2--Molding part (molding surface) 3--Cavity part 4--Vacuum hole 5--Molding surface 6--One end 7--・-Cutter 8-111~-Seal part
Claims (1)
ずる複数個の真空引き孔を形成し、この成形型の成形面
側に加熱されたシート状の成形材料を張架して空洞部か
ら真空引きする真空成形装置であって、前記真空成形さ
れる成形材料の厚みを確保せしめる部位に対応する成形
型の端部に、成形材料が成形型に張架される際に、その
一部をカットする刃具を設け、この刃具の内側成形面側
に刃具でカットされた成形材料のシール性を向上させる
シール部を形成したことを特徴とする真空成形装置。A plurality of vacuum holes communicating with the cavity are formed on the molding surface of the mold in which the cavity is formed, and a heated sheet-like molding material is stretched over the molding surface of the mold to create the cavity. A vacuum forming apparatus that draws a vacuum from a part of the molding material, and when the molding material is stretched over the molding material, the end part of the molding material corresponding to the part where the thickness of the molding material to be vacuum-formed is ensured. 1. A vacuum forming apparatus characterized in that a cutting tool is provided for cutting the part, and a sealing part is formed on the inner molding surface side of the cutting tool to improve the sealing performance of the molding material cut by the cutting tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26881085A JPH0649333B2 (en) | 1985-11-28 | 1985-11-28 | Vacuum forming apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26881085A JPH0649333B2 (en) | 1985-11-28 | 1985-11-28 | Vacuum forming apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62127224A true JPS62127224A (en) | 1987-06-09 |
| JPH0649333B2 JPH0649333B2 (en) | 1994-06-29 |
Family
ID=17463572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26881085A Expired - Lifetime JPH0649333B2 (en) | 1985-11-28 | 1985-11-28 | Vacuum forming apparatus and method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0649333B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0377627U (en) * | 1989-11-29 | 1991-08-05 | ||
| DE102007031087A1 (en) * | 2007-07-04 | 2009-01-08 | Frimo Group Gmbh | Thermoform or lining tool for motor vehicle, has vacuum chambers provided to evacuate intermediate space between cutting edge and foil on both sides of edge, to engage foil under effect of atmospheric air pressure with edge and to cut foil |
| CN103448235A (en) * | 2013-09-04 | 2013-12-18 | 延锋伟世通金桥汽车饰件系统有限公司 | Vacuum female mold forming mold |
-
1985
- 1985-11-28 JP JP26881085A patent/JPH0649333B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0377627U (en) * | 1989-11-29 | 1991-08-05 | ||
| DE102007031087A1 (en) * | 2007-07-04 | 2009-01-08 | Frimo Group Gmbh | Thermoform or lining tool for motor vehicle, has vacuum chambers provided to evacuate intermediate space between cutting edge and foil on both sides of edge, to engage foil under effect of atmospheric air pressure with edge and to cut foil |
| CN103448235A (en) * | 2013-09-04 | 2013-12-18 | 延锋伟世通金桥汽车饰件系统有限公司 | Vacuum female mold forming mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0649333B2 (en) | 1994-06-29 |
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