JPH0381722U - - Google Patents
Info
- Publication number
- JPH0381722U JPH0381722U JP14289489U JP14289489U JPH0381722U JP H0381722 U JPH0381722 U JP H0381722U JP 14289489 U JP14289489 U JP 14289489U JP 14289489 U JP14289489 U JP 14289489U JP H0381722 U JPH0381722 U JP H0381722U
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- screw
- hydraulic
- piston
- molding machine
- 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
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Description
第１図は本考案に係る射出成形機の射出装置の
一実施例を示す油圧回路図、第２図は本考案の射
出装置に用いられている油圧シリンダのロツドの
取付け構造の一例を示す断面図、第３図は本考案
に係る射出装置の他の実施例を示す油圧回路図で
ある。第４図は従来の射出装置の油圧回路図、第
５図は従来の射出装置の断面略図である。
１……加熱シリンダ、２……ノズル、３……原
料投入口、４……スクリユー、５……油圧モータ
（駆動モータ）、６……油圧シリンダ、７……ロ
ツド、８……ピストン、９……シリンダ本体、１
０……配管（第２配管）、１１……配管（第１配
管）、１２……配管、１３……電磁切換え弁、１
６……油圧ポンプ、１９……リリーフバルブ、２
０……ロツド、２１……電磁切換え弁、２２，２
７……バイパス管、Ｐａ……後側ポート、Ｐｂ…
…前側ポート。
Fig. 1 is a hydraulic circuit diagram showing an embodiment of the injection device of an injection molding machine according to the present invention, and Fig. 2 is a cross section showing an example of the mounting structure of the hydraulic cylinder rod used in the injection device of the present invention. 3 are hydraulic circuit diagrams showing other embodiments of the injection device according to the present invention. FIG. 4 is a hydraulic circuit diagram of a conventional injection device, and FIG. 5 is a schematic sectional view of the conventional injection device. DESCRIPTION OF SYMBOLS 1... Heating cylinder, 2... Nozzle, 3... Raw material input port, 4... Screw, 5... Hydraulic motor (drive motor), 6... Hydraulic cylinder, 7... Rod, 8... Piston, 9 ...Cylinder body, 1
0... Piping (second piping), 11... Piping (first piping), 12... Piping, 13... Solenoid switching valve, 1
6...Hydraulic pump, 19...Relief valve, 2
0...Rod, 21...Solenoid switching valve, 22,2
7... Bypass pipe, Pa... Rear port, Pb...
...Front port.
Claims (1)
れぞれ備えた加熱シリンダ内にスクリユーが挿入
され、該スクリユーにはスクリユーを周方向に回
転させる駆動モータと、後側ポートからシリンダ
本体内に圧入される作動油によつてピストンを動
かしてスクリユーを上記ノズルに向けて軸方向に
移動させる油圧シリンダが付設されるとともに、
上記シリンダ本体の上記後側ポートの反対側に設
けられた前側ポートと上記後側ポートに第１配管
と第２配管が個々に接続され、上記後側ポートの
第２配管に切換え弁を介して油圧ポンプが連絡さ
れた射出成形機の射出装置において、上記油圧シ
リンダはピストンの両側にロツドが取り付けられ
た両ロツド式とされ、かつ上記ピストンの後側ポ
ート側の受圧面積は前側ポートの受圧面積よりも
大とされるとともに、上記第１配管と第２配管が
バイパス管によつて相互に連絡自在とされたこと
を特徴とする射出成形機の射出装置。 (2) 駆動モータが油圧モータによつて構成され
、かつ該油圧モータは第３配管により上記切換え
弁に接続されるとともに、上記切換え弁には、油
圧モータの作動時に第２配管に接続されてスクリ
ユーの後退に背圧をかけるリリーフバルブが接続
されたことを特徴とする実用新案登録請求の範囲
第１項記載の射出成形機の射出装置。 (3) ピストンの両側に設けられたロツドのうち
少なくとも一方のロツドが交換自在に構成された
ことを特徴とする実用新案登録請求の範囲第１項
記載の射出成形機の射出装置。[Claims for Utility Model Registration] (1) A screw is inserted into a heating cylinder equipped with a nozzle at one end and a raw material input port at the other end, and the screw is equipped with a drive motor that rotates the screw in the circumferential direction; A hydraulic cylinder is attached to move the screw in the axial direction toward the nozzle by moving a piston using hydraulic oil pressurized into the cylinder body from the rear port, and
A first pipe and a second pipe are individually connected to a front port provided on the opposite side of the rear port of the cylinder body and the rear port, and a first pipe and a second pipe are connected to the second pipe of the rear port via a switching valve. In an injection device of an injection molding machine connected to a hydraulic pump, the hydraulic cylinder is a double-rod type in which rods are attached to both sides of the piston, and the pressure receiving area on the rear port side of the piston is equal to the pressure receiving area on the front port side. An injection device for an injection molding machine, characterized in that the first pipe and the second pipe are able to communicate with each other via a bypass pipe. (2) The drive motor is constituted by a hydraulic motor, and the hydraulic motor is connected to the switching valve through a third pipe, and the switching valve is connected to a second pipe when the hydraulic motor is operated. An injection device for an injection molding machine according to claim 1, characterized in that a relief valve is connected to apply back pressure to the retraction of the screw. (3) The injection device for an injection molding machine according to claim 1, wherein at least one of the rods provided on both sides of the piston is configured to be replaceable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989142894U JPH0525866Y2 (en) | 1989-12-11 | 1989-12-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989142894U JPH0525866Y2 (en) | 1989-12-11 | 1989-12-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0381722U true JPH0381722U (en) | 1991-08-21 |
| JPH0525866Y2 JPH0525866Y2 (en) | 1993-06-30 |
Family
ID=31689701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989142894U Expired - Lifetime JPH0525866Y2 (en) | 1989-12-11 | 1989-12-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0525866Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4531119B2 (en) * | 2008-01-10 | 2010-08-25 | 大晴産業株式会社 | Hairstyle holder when wearing a hat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62207623A (en) * | 1986-03-08 | 1987-09-12 | Daikin Ind Ltd | Controller for back pressure in cylinder of injection molder |
| JPS6394811A (en) * | 1986-10-09 | 1988-04-25 | Sumitomo Heavy Ind Ltd | Injection hydraulic pressure circuit of injection molder |
| JPH0264021U (en) * | 1988-11-02 | 1990-05-14 |
-
1989
- 1989-12-11 JP JP1989142894U patent/JPH0525866Y2/ja not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62207623A (en) * | 1986-03-08 | 1987-09-12 | Daikin Ind Ltd | Controller for back pressure in cylinder of injection molder |
| JPS6394811A (en) * | 1986-10-09 | 1988-04-25 | Sumitomo Heavy Ind Ltd | Injection hydraulic pressure circuit of injection molder |
| JPH0264021U (en) * | 1988-11-02 | 1990-05-14 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4531119B2 (en) * | 2008-01-10 | 2010-08-25 | 大晴産業株式会社 | Hairstyle holder when wearing a hat |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0525866Y2 (en) | 1993-06-30 |
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