JPS63151422A - Straight-hydraulic clamping device for injection molding machine or the like - Google Patents
Straight-hydraulic clamping device for injection molding machine or the likeInfo
- Publication number
- JPS63151422A JPS63151422A JP29919286A JP29919286A JPS63151422A JP S63151422 A JPS63151422 A JP S63151422A JP 29919286 A JP29919286 A JP 29919286A JP 29919286 A JP29919286 A JP 29919286A JP S63151422 A JPS63151422 A JP S63151422A
- Authority
- JP
- Japan
- Prior art keywords
- mold clamping
- ram
- die plate
- mold
- cylinder
- 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
- 238000001746 injection moulding Methods 0.000 title claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 14
- 239000010720 hydraulic oil Substances 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000003566 sealing 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
- B29C45/6707—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野〕
本発明は直圧式の射出成形機、ダイキャスト機等の型締
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a mold clamping device for a direct pressure type injection molding machine, die casting machine, etc.
（従来の技術）
従来一般に広く知られている直圧式型締装置は型締シリ
ンダ内にプレフィルパルプを内蔵していて大容量の作動
油を必要とし、大径で高重量の型締ラムが高速で移動し
ていた。(Prior art) The conventionally widely known direct pressure type mold clamping device has pre-filled pulp built into the mold clamping cylinder and requires a large volume of hydraulic oil, and a large diameter and heavy mold clamping ram is required. It was moving at high speed.
（発明が解決しようとする問題点）
従来の直圧式型締装置にはプレフィルパルプが内蔵され
ている為、型締ストロークの割合に対して装置が大型化
し、重量的にも価格的にも不経済であった。また大径で
高重量の型締ラムが長いストロークに亘って移動するの
で大計の作動油の移動が常にあり、そのために油圧配管
も大型複雑化し、操作性、保守の面で問題がある。(Problems to be solved by the invention) Since the conventional direct pressure type mold clamping device has a built-in pre-filled pulp, the device becomes large in proportion to the mold clamping stroke, resulting in an increase in weight and cost. It was uneconomical. Furthermore, since the large-diameter, heavy-weight mold clamping ram moves over a long stroke, there is always a large amount of hydraulic fluid movement, which makes the hydraulic piping large and complicated, which poses problems in terms of operability and maintenance.
本発明は従来装置のようにプレフィルパルプを使用せず
に、大径で高重量の型締ラムのストローりを型締時及び
型開放時のわずかな量とし、また小径のブーストラムの
ストロークを後退位置から型締直前まで、及び型開放直
後から後退位置までの大きな量に形成して、油量の移動
を少なくし、小型化、経済化した直圧式型締装置を提供
することを目的とする○
〔発明の構成〕
（問題点を解決するための手段）
上記目的を達成するために、本発明に於ては機台に固定
された型締シリンダと、その同軸内部に大径を有し、そ
のストローク領域が型締時及び型開放時のわずかな量に
形成された型締ラムと、前記型締ラムの軸心部にブース
トシリンダを形成し、前記ブーストシリンダにストロー
ク領域が後退位置から型締直前まで及び型開放直後から
後退位置までの大きな量に形成された小径のブーストラ
ムと、その一端を移動ダイプレートに固着してなる直圧
式型締装置を提供する。The present invention does not use prefill pulp as in conventional devices, but reduces the stroke of the large diameter and heavy mold clamping ram to a small amount during mold clamping and mold opening, and also reduces the stroke of the small diameter boost ram. The purpose of the present invention is to provide a direct pressure type mold clamping device that is compact and economical by forming a large amount of oil from the retracted position to just before the mold clamping and from immediately after the mold is opened to the retracted position to reduce the amount of oil movement. ○ [Structure of the invention] (Means for solving the problems) In order to achieve the above object, the present invention includes a mold clamping cylinder fixed to the machine base and a large diameter inside the coaxial cylinder. A mold clamping ram whose stroke area is a small amount when the mold is clamped and when the mold is opened, and a boost cylinder is formed at the axial center of the mold clamping ram, and the stroke area of the boost cylinder is set back. To provide a direct pressure type mold clamping device comprising a small diameter boost ram formed in a large amount from a position to just before mold clamping and from immediately after mold opening to a retracted position, and one end of the boost ram is fixed to a movable die plate.
（作 用）
プレフィルパルプを使用していないので長手刀゛向に縮
少化でき、捷た大径で高重量の型締ラムのストロークを
必要最小限とし、移動ダイプレートに固着したブースト
ラムを小径化したので型締直前まで及び型開放直後の移
動ダイプレートの進退の高速化が可能であり、使用する
作動油が少量で済むとともに型締時及び型開放時に必要
とする大きな力を型締ラムに作用しうる。(Function) Since pre-filled pulp is not used, the size can be reduced in the longitudinal direction, and the stroke of the large-diameter, heavy-weight mold clamping ram can be minimized, and the boost ram fixed to the movable die plate can be used. Because the diameter of the die plate has been reduced, it is possible to move the movable die plate forward and backward immediately before mold clamping and immediately after mold opening, which requires less hydraulic oil and reduces the large force required during mold clamping and mold opening. It can act on the tightening ram.
（実施例）
以下本発明の実施例を、第１図及び第２図を参照して説
明する。(Example) Examples of the present invention will be described below with reference to FIGS. 1 and 2.
Ｉはフレーム２上に固着された型締シリンダで、型締シ
リングには型締ラム３が嵌挿されている。I is a mold clamping cylinder fixed on the frame 2, and a mold clamping ram 3 is fitted into the mold clamping cylinder.
型締シリンダーはシリンダの深部は小径、浅部は大径に
形成されている。前記型締ラム３は、ピストンリング４
取付溝を有する大径部が、前記型締シリンダ３の浅部の
大径に軸方向にわずかに、油室１８及びＩＱに作用する
圧油により、ストロークできるように摺動自在に嵌合さ
れている。The clamping cylinder has a small diameter in the deep part and a large diameter in the shallow part. The mold clamping ram 3 has a piston ring 4
A large diameter portion having a mounting groove is slidably fitted into the large diameter shallow portion of the mold clamping cylinder 3 so as to be able to stroke slightly in the axial direction by pressure oil acting on the oil chamber 18 and IQ. ing.
型締ラム３の中心部はブーストシリンダ６となっており
、有底長孔とこの有底長孔に嵌挿されるピストン７とロ
ッド８からなるブーストラムを有し、ロッド８の先端は
移動ダイプレート９に固着されていて、油室１４及び１
６に作用する圧油により軸方向に移動し、移動ダイグレ
ート９を進退させるようになっている。The center of the mold clamping ram 3 is a boost cylinder 6, which has a boost ram consisting of a bottomed elongated hole, a piston 7 and a rod 8 that are fitted into the bottomed elongated hole, and the tip of the rod 8 is connected to a movable die. It is fixed to the plate 9 and has oil chambers 14 and 1.
The movable die plate 9 is moved in the axial direction by pressure oil acting on the die plate 6, and moves the movable die plate 9 forward and backward.
型締ラム３及びブーストラムのピストン７のピストンリ
ング取付溝には複数本のピストンリング４．５が装着さ
れ、型締シリンダのＲ室１０及びブーストシリンダのＲ
室１６の圧油が外部に洩れるのを防止するため、増圧に
耐えうるシール材１２．１３が嵌挿保持されている０
以下、動作について説明する０先づ型締動作について説
明すると型締動作開始信号（図示せず）により、ブース
トシリンダ６のログド側の室１６に通じる管路１７を開
放し、ピストン側の室１４に通じる管路１５に圧油を導
入することにより、ロッド８の先端に固着され友移動ダ
イプレート９は高速で図の右方に前進する。移動ダイプ
レート９が型締直前まで前進すると型締直前位置検出信
号（図示せず）によって、ブーストシリンダのピストン
側の室１４及びロッド側の室１６に通じる管路１５及び
１７を閉塞すると同時に型締ラム３の型締シリンダの１
＜室１０に通じる管路１１を開放し、型締シリンダのＦ
室１８に通じる管路１９に圧油を導入すること′により
、移動ダイプレーヴは更に右方に前進し、型締位置で型
締シリンダの大口径のＦ室１８で発生した大きな力は、
ブーストシリンダ６のピストン側の室１４の油圧金増圧
し、必要な型締力を得ることになる。A plurality of piston rings 4.5 are installed in the piston ring mounting grooves of the piston 7 of the mold clamping ram 3 and the boost ram, and the R chamber 10 of the mold clamping cylinder and the R chamber of the boost cylinder
In order to prevent the pressure oil in the chamber 16 from leaking to the outside, a sealing material 12 and 13 that can withstand increased pressure is inserted and retained.0 Below, the operation will be explained.0 First, the mold clamping operation will be explained. In response to an operation start signal (not shown), the pipe line 17 leading to the log side chamber 16 of the boost cylinder 6 is opened, and pressure oil is introduced into the pipe line 15 leading to the piston side chamber 14, thereby opening the rod 8. The companion moving die plate 9 fixed at the tip moves forward at high speed to the right in the figure. When the movable die plate 9 moves forward to just before mold clamping, a mold clamping position detection signal (not shown) closes the pipes 15 and 17 leading to the piston side chamber 14 and rod side chamber 16 of the boost cylinder, and at the same time closes the mold. Clamping cylinder 1 of clamping ram 3
<Open the pipe line 11 leading to the chamber 10, and press the F of the mold clamping cylinder.
By introducing pressure oil into the pipe line 19 leading to the chamber 18, the movable die plate moves further to the right, and the large force generated in the large-diameter F chamber 18 of the mold clamping cylinder at the mold clamping position is
The hydraulic pressure in the chamber 14 on the piston side of the boost cylinder 6 is increased to obtain the necessary mold clamping force.
次に型開放動作について説明すると、型開放動作開始信
号（図示せず）によりブーストシリンダらのピストン側
の室１４に通じる管路１５ｔ−開放し、圧油を管路１７
からブーストシリンダのＲ室１６に導入する。ことによ
って型開放動作に可能であるが、ブーストシリンダのＲ
室１６は小径のため開放力は小さい。そこで、ピストン
側の室１４、及びブーストシリンダのＲ室１６に通じる
管路１５．１７ｅ閉塞したままとし、型締シリンダのＦ
室１８に通じる管路１９を開放し、型締シリンダのＲ室
１０に通じる管路１１より圧油を導入すると大きな開放
力が発生して一型締ラム３は図の左方に後退し、同時に
移動ダイズレート９も後退する。Next, to explain the mold opening operation, in response to a mold opening operation start signal (not shown), the pipe line 15t leading to the piston side chamber 14 of the boost cylinder etc. is opened, and the pressure oil is supplied to the pipe line 17.
and into the R chamber 16 of the boost cylinder. However, the radius of the boost cylinder
Since the chamber 16 has a small diameter, the opening force is small. Therefore, the pipe line 15.17e leading to the piston side chamber 14 and the R chamber 16 of the boost cylinder is kept closed, and the mold clamping cylinder F
When the pipe line 19 leading to the chamber 18 is opened and pressure oil is introduced from the pipe line 11 leading to the R chamber 10 of the mold clamping cylinder, a large opening force is generated and the mold clamping ram 3 retreats to the left in the figure. At the same time, the moving soybean rate 9 also retreats.
固定ダイプレート（図示せず）及び移動ダイプレート９
に固着している両金型（図示せずｙの密着面がわずかに
開く程度に型締ラム３が図の左方に後退したところで、
ブーストシリンダ６のピストン側の室１４に通じる管路
１５を開放し、ブーストシリンダのＲ室１６に通じる管
路１７に圧油を導入すると移動ダイプレート９は高速に
て図の左方に後退する。Fixed die plate (not shown) and moving die plate 9
When the mold clamping ram 3 has retreated to the left in the figure to the extent that the contact surfaces of both molds (y, not shown) that are fixed to the molds are slightly opened,
When the pipe line 15 leading to the piston side chamber 14 of the boost cylinder 6 is opened and pressure oil is introduced into the pipe line 17 leading to the R chamber 16 of the boost cylinder, the movable die plate 9 retreats to the left in the figure at high speed. .
以上のように構成され動作するので、大径で高重量の型
締ラムのストロークを・必要最小限とし、大きく移動す
る移動ダイプレートに固着し次ブーストラムを小径化し
たので型締直前まで及び型開放直後から後退位置までの
移動ダイ／レートの高速化が可能であり、型締時及び型
開放時に必要とする大きな労金型締ラムに作用させるこ
とが出来る。又油量の移動を常に最小限におさえること
が出来る。As it is configured and operates as described above, the stroke of the large-diameter, heavy-weight mold clamping ram is kept to the necessary minimum, and the stroke of the large-diameter, heavy-weight mold clamping ram is fixed to the movable die plate that moves widely. It is possible to increase the speed of the moving die/rate from immediately after mold opening to the retracted position, and it is possible to act on the large workpiece mold clamping ram required during mold clamping and mold opening. In addition, the movement of oil amount can always be kept to a minimum.
プレフィルバルブを用いていないので装置の長手方向に
縮少化でき、コンパクト化、経済化が可能である。Since no prefill valve is used, the length of the device can be reduced, making it more compact and economical.
型締シリンダと型締ラムの摺動部及びブーストシリンダ
とブーストラムの摺動部をシール部材によりシールをし
ているので増圧を効率化よく行うことが可能である。Since the sliding parts between the mold clamping cylinder and the mold clamping ram and the sliding parts between the boost cylinder and the boost ram are sealed by the sealing members, it is possible to increase the pressure efficiently.
本発明によれば従来装置めようにプレフィルパルプを使
用せずに、大径で高重量の型締ラムのストロークを必要
最小限とし、移動量の大きいブーストラムを小径化した
ので油量の移動を常に少なく１小型１済化することが可
能である。According to the present invention, unlike conventional equipment, prefill pulp is not used, the stroke of the large diameter and heavy mold clamping ram is minimized, and the boost ram, which has a large travel distance, is made small in diameter, thereby reducing the amount of oil. It is possible to always reduce the amount of movement by making it one size and one item.
第１図は本発明の一実施例を示す直圧式型締装置の一部
を断面した後退位置を示す正面図、第２図は一部を断面
し友前進位置を示す正面図。
１・・・型締シリンダ、 ２・・・フレーム、３・・・
型締ラム、 ４・・・ピストンリング、６・・・ブース
トシリンダ、 ７・・・ピストン、８・・・ロッド、
９・・・移動ダイグレート、１０・・・型締シリンダ
のＲ室、＋２・・・シール材、１４・・・ブーストシリ
ンダのＦ室、
１６・・・ブーストシリンダのＲ９，
１８・・・型締シリンダのＦ室。FIG. 1 is a partially sectional front view showing a direct pressure type mold clamping device according to an embodiment of the present invention in a retracted position, and FIG. 2 is a partially sectional front view showing a forward position. 1... Mold clamping cylinder, 2... Frame, 3...
Clamping ram, 4... Piston ring, 6... Boost cylinder, 7... Piston, 8... Rod,
9... Moving die rate, 10... R chamber of mold clamping cylinder, +2... Seal material, 14... F chamber of boost cylinder, 16... R9 of boost cylinder, 18... Model F chamber of the tightening cylinder.
Claims (3)
に大径を有し、そのストローク領域が型締時及び型開放
時のわずかな量に形成された型締ラムと、前記型締ラム
の軸心部にブーストシリンダを形成し、前記ブーストシ
リンダにストローク領域が後退位置から型締直前まで及
び型開放直後から後退位置までの大きな量に形成された
小径のブーストラムと、その一端を移動ダイプレートに
固着してなる射出成形機等の直圧式型締装置。(1) A mold clamping cylinder fixed to the machine base, a mold clamping ram having a large diameter coaxially inside and whose stroke area is a small amount when the mold is clamped and when the mold is opened, and the mold A boost cylinder is formed in the axial center of the clamping ram, and a small-diameter boost ram is formed in the boost cylinder with a large stroke area from the retracted position to just before mold clamping and from immediately after mold opening to the retracted position, and one end thereof. A direct pressure mold clamping device for injection molding machines, etc., which is fixed to a moving die plate.
よりシールした前記特許請求の範囲第１項記載の射出成
形機等の直圧式型締装置。(2) A direct pressure type mold clamping device for an injection molding machine or the like according to claim 1, wherein the sliding portions of the mold clamping cylinder and the mold clamping ram are sealed by a sealing member.
ル部材によりシールした前記特許請求の範囲第１項記載
の射出成形機等の直圧式型締装置。(3) A direct pressure mold clamping device for an injection molding machine or the like according to claim 1, wherein the sliding portions of the boost cylinder and the boost ram are sealed by a sealing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61299192A JPH082571B2 (en) | 1986-12-16 | 1986-12-16 | Direct pressure type mold clamping device such as injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61299192A JPH082571B2 (en) | 1986-12-16 | 1986-12-16 | Direct pressure type mold clamping device such as injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63151422A true JPS63151422A (en) | 1988-06-24 |
| JPH082571B2 JPH082571B2 (en) | 1996-01-17 |
Family
ID=17869328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61299192A Expired - Fee Related JPH082571B2 (en) | 1986-12-16 | 1986-12-16 | Direct pressure type mold clamping device such as injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH082571B2 (en) |
-
1986
- 1986-12-16 JP JP61299192A patent/JPH082571B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH082571B2 (en) | 1996-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |