JP2000176985A - Automatic lubricating device for injection molding machine - Google Patents
Automatic lubricating device for injection molding machineInfo
- Publication number
- JP2000176985A JP2000176985A JP10358272A JP35827298A JP2000176985A JP 2000176985 A JP2000176985 A JP 2000176985A JP 10358272 A JP10358272 A JP 10358272A JP 35827298 A JP35827298 A JP 35827298A JP 2000176985 A JP2000176985 A JP 2000176985A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- outer cylinder
- injection molding
- molding machine
- pipe
- 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
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
- B29C45/83—Lubricating means
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、射出成形機の摺動
部や回転部（以下、給油箇所と呼ぶ。）にグリース等の
潤滑油を自動的に供給する射出成形機における自動潤滑
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic lubricating apparatus for an injection molding machine which automatically supplies a lubricating oil such as grease to a sliding portion or a rotating portion (hereinafter referred to as a lubrication point) of the injection molding machine. .
【０００２】[0002]
【従来の技術】型締装置と射出装置を備えた射出成形機
においては、例えば図３に示すように、トグル機構６１
の関節部分や、タイロッド６２に摺動自在に支持された
可動盤６３の摺動部分等にグリースニップル６４をそれ
ぞれ設け、駆動部６５でグリースポンプ６６を駆動する
ことにより、グリースを分配器６７とチューブ６８を介
して各グリースニップル６４に送って各給油箇所を潤滑
するようにしている。なお、この給油は、一般には一定
の時間間隔で行われる。ところが、グリースの供給量を
誤って、潤滑不足から給油箇所の摩耗を早めてしまった
り、グリースを過剰に供給して周囲や成形品を汚すなど
の不都合を生じやすい。2. Description of the Related Art In an injection molding machine provided with a mold clamping device and an injection device, for example, as shown in FIG.
The grease nipples 64 are provided at the joints of the movable plate 63 and the sliding portion of the movable plate 63 slidably supported by the tie rods 62, respectively. The oil is supplied to each grease nipple 64 via a tube 68 to lubricate each lubrication point. Note that this refueling is generally performed at regular time intervals. However, inconveniences such as erroneous supply of the grease, rapid wear of the lubrication point due to insufficient lubrication, and excessive supply of the grease to contaminate the surroundings and the molded product are likely to occur.
【０００３】そこで、図３の電動式射出成形機において
は、トグル機構６１を作動させるサーボモータ６９や型
厚調整用サーボモータ７０等のエラー電圧から潤滑不足
を検出してグリースポンプ６６を自動的に作動させるよ
うにしている（特開平３−７９３２５号公報）。In the electric injection molding machine shown in FIG. 3, the grease pump 66 is automatically turned on by detecting insufficient lubrication from an error voltage of the servomotor 69 for operating the toggle mechanism 61 and the servomotor 70 for adjusting the mold thickness. (Japanese Patent Laid-Open No. 3-79325).
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記従来の射
出成形機における自動潤滑装置には以下のような問題が
ある。 （１） サーボモータ６９，７０の電圧値を監視してい
るため、当然、サーボモータ以外の駆動源による装置に
は適用できない。 （２） モータのエラー電圧が高くなった時点、すなわ
ち、機械の動作が重くなった時点から潤滑油を供給する
構成であるが、ベアリング等の回転部材では潤滑切れに
よる異常摩耗や剥離は急激に進行するため、動作が重く
なってから給油しても手遅れになる場合が多い。 （３） 各給油箇所（グリースニップル６４）への供給
量の決定方法が明確に確定されておらず、各給油箇所に
適切な量の潤滑油が供給されていない可能性が強い。However, the automatic lubricating device in the above-mentioned conventional injection molding machine has the following problems. (1) Since the voltage values of the servo motors 69 and 70 are monitored, it cannot be applied to a device using a drive source other than the servo motor. (2) The lubricating oil is supplied from the point of time when the error voltage of the motor becomes high, that is, the point at which the operation of the machine becomes heavy. Because it progresses, it is often too late to refuel after the operation becomes heavy. (3) The method of determining the supply amount to each lubrication point (grease nipple 64) is not clearly determined, and it is highly likely that an appropriate amount of lubricating oil is not supplied to each lubrication point.
【０００５】本発明は、上記の事情に鑑みてなされたも
ので、各給油箇所に常に適切な潤滑油を供給することが
できる射出成形機における自動潤滑装置を提供すること
を目的とする。The present invention has been made in view of the above circumstances, and has as its object to provide an automatic lubricating apparatus for an injection molding machine that can always supply appropriate lubricating oil to each lubricating point.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
めに、請求項１記載の発明は、射出成形機の各給油箇所
に計量手段を用いてグリース等の潤滑油を供給する射出
成形機における自動潤滑装置において、上記計量手段の
各給油箇所に対する潤滑油供給量を、射出成形機の給油
箇所の空間容積、運転頻度、運転速度、運転時の負荷、
運転時の温度、運転ストローク長さ、給油箇所の重要
度、潤滑油自体の特性、平均回転数、許容最大回転数、
回転支持部材のうちの１以上のパラメータによって定め
た構成とした。In order to achieve the above object, the invention according to claim 1 is directed to an injection molding machine for supplying lubricating oil such as grease to each lubrication point of the injection molding machine using a measuring means. In the automatic lubricating device in the above, the lubricating oil supply amount to each lubrication point of the measuring means, the space volume of the lubrication point of the injection molding machine, operation frequency, operation speed, load during operation,
Temperature during operation, operation stroke length, importance of lubrication point, characteristics of lubricating oil itself, average rotation speed, allowable maximum rotation speed,
The configuration was determined by one or more parameters of the rotation support member.
【０００７】上記の手段では、各給油箇所の特性を表す
パラメータを設定し、そのパラメータから必要な潤滑油
の供給量を決定しその量に対応した吐出容量を持つ計量
手段をそれぞれ対応する給油箇所に設ける。したがっ
て、各給油箇所に常に適切な量の潤滑油が供給されるよ
うになる。In the above means, a parameter representing the characteristics of each lubricating point is set, a necessary lubricating oil supply amount is determined from the parameter, and a metering means having a discharge capacity corresponding to the amount is set to the corresponding lubricating point. To be provided. Therefore, an appropriate amount of lubricating oil is always supplied to each lubrication point.
【０００８】上記の射出成形機における自動潤滑装置に
おいて、計量手段を、潤滑油の受口と吐出口を両端に有
する外筒と、中心孔と該中心孔に連通された連通孔とを
有し、上記中心孔を上記吐出口に連絡して外筒内に同心
状に固定されたパイプと、上記外筒の受口と上記パイプ
との間に、外筒の長手方向に移動自在に装入され、受口
から外筒内に押し入られる潤滑油のパイプ側への流動を
自由にしてその逆の流動を阻止し、また受口から外筒内
に押し入れた潤滑油によってパイプの端面に当接して中
心孔を閉塞する逆止弁と、上記連通孔に通じる収容室を
形成して上記外筒とパイプとの間に外筒の長手方向に移
動自在に嵌装され、受口から外筒内に押し入れられた潤
滑油により吐出口側に押し動かされて上記収容室内の潤
滑油を連通孔を通じて吐出口から吐出させる計量スプー
ルと、上記で吐出口側に移動させられた計量スプールを
受口側に移動させて計量スプールと逆止弁の間の潤滑油
をパイプの中心孔と連通孔を通じて収容室内に流入させ
る戻しばねとを具備した計量バルブとすることが好まし
い（請求項２）。In the automatic lubricating apparatus of the above injection molding machine, the measuring means has an outer cylinder having a lubricating oil receiving port and a discharging port at both ends, a center hole, and a communication hole communicating with the center hole. A pipe concentrically fixed in the outer cylinder by connecting the center hole to the discharge port, and movably inserted in a longitudinal direction of the outer cylinder between the receiving port of the outer cylinder and the pipe. The lubricating oil pushed into the outer cylinder from the receiving port is freed to flow to the pipe side to prevent the reverse flow, and the lubricating oil pushed into the outer cylinder from the receiving port hits the end face of the pipe. A check valve that contacts and closes the center hole, and a storage chamber that communicates with the communication hole is formed to be fitted between the outer cylinder and the pipe so as to be movable in the longitudinal direction of the outer cylinder. The lubricating oil pushed into the chamber is pushed to the discharge port side to allow the lubricating oil in the accommodation chamber to pass through the communication hole. The measuring spool that discharges from the discharge port and the measuring spool that has been moved to the discharge port side is moved to the receiving side, and the lubricating oil between the measuring spool and the check valve passes through the center hole and the communication hole of the pipe. It is preferable that the metering valve includes a return spring that flows into the storage chamber (claim 2).
【０００９】この構成では、外筒内にその受口から潤滑
油を圧入すると、計量スプールが移動して収容室内の所
定量の潤滑油を吐出口から吐出させるとともに、逆止弁
がパイプの端面に当接してその中心孔を閉じる。所定量
の潤滑油が吐出され終った後は、外筒への潤滑油の圧入
を継続しても潤滑油がそれ以上吐出されることはない。
潤滑油の圧入を止めると、計量スプールが戻しばねの作
用で元の状態に戻される。この際、計量スプールの戻り
移動で逆止弁がパイプから離されるとともに、計量スプ
ールと逆止弁間の潤滑油が中心孔と連通孔を通って収容
室内に流入し、１回の作動サイクルが終了する。In this configuration, when lubricating oil is press-fitted into the outer cylinder through the receiving port, the measuring spool moves to discharge a predetermined amount of lubricating oil in the storage chamber from the discharge port, and the check valve is connected to the end face of the pipe. And close the center hole. After the predetermined amount of the lubricating oil has been discharged, no further lubricating oil is discharged even if the lubricating oil is continuously pressed into the outer cylinder.
When the press-in of the lubricating oil is stopped, the measuring spool is returned to the original state by the action of the return spring. At this time, the check valve is separated from the pipe by the return movement of the measuring spool, and the lubricating oil between the measuring spool and the check valve flows into the accommodation chamber through the center hole and the communication hole, and one operation cycle is performed. finish.
【００１０】この計量バルブの場合、潤滑油の吐出量
は、例えば計量スプールの長さを変えるなどの方法で収
容室の容積を変えることにより、比較的簡単に微調整す
ることができる。In the case of this metering valve, the discharge amount of the lubricating oil can be finely adjusted relatively easily by changing the volume of the storage chamber by, for example, changing the length of the measuring spool.
【００１１】[0011]
【発明の実施の形態】本発明の実施の形態を添付の図１
と図２を参照して説明する。これらの図において符号１
は射出成形機である。射出成形機１は型締装置２と射出
装置３とから構成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG.
This will be described with reference to FIG. In these figures, reference numeral 1
Is an injection molding machine. The injection molding machine 1 includes a mold clamping device 2 and an injection device 3.
【００１２】型締装置２は、金型５が取り付けられた固
定盤６とエンドプレート７とを一体に結合しているタイ
ロッド８に、金型９を取り付けた可動盤１１を摺動自在
に支持し、その可動盤１１とエンドプレート７との間
に、トグル機構１２を設けるとともに、そのトグル機構
１２のクロスヘッド１３を、油圧シリンダ１４で動かし
て可動盤１１を型締め及び型開き移動させるようになっ
ている。The mold clamping device 2 slidably supports a movable plate 11 with a mold 9 attached to a tie rod 8 integrally connecting a fixed plate 6 with a mold 5 attached thereto and an end plate 7. A toggle mechanism 12 is provided between the movable platen 11 and the end plate 7, and the crosshead 13 of the toggle mechanism 12 is moved by a hydraulic cylinder 14 so that the movable platen 11 is clamped and opened. It has become.
【００１３】また、射出装置３は、加熱筒２１が取り付
けられたフロントプレート２２とリヤプレート２３とを
ガイドロッド２４で一体に結合し、そのガイドロッド２
４に、モータ２５で回転させられる射出スクリュ２６を
取り付けたプッシャプレート２８と補助プレート２９と
をそれぞれ摺動自在に支持し、油圧シリンダ３１でプッ
シャプレート２８を射出スクリュ２６と一緒に補助プレ
ート２９を介して進退させることができるようにされて
いる。In the injection device 3, the front plate 22 to which the heating cylinder 21 is attached and the rear plate 23 are integrally connected by a guide rod 24, and the guide rod 2
4, a pusher plate 28 to which an injection screw 26 rotated by a motor 25 is attached and an auxiliary plate 29 are slidably supported, and the hydraulic cylinder 31 is used to move the pusher plate 28 together with the injection screw 26 to the auxiliary plate 29. You can be made to retreat through.
【００１４】また、フロントプレート２２とリヤプレー
ト２３とを固定した基台３３をベッド３４上に摺動自在
に設け、油圧シリンダ３５で基台３３を固定盤６に接近
させて、加熱筒２１のノズル３６を金型５に当接させる
ことができる構造となっている。A base 33 to which the front plate 22 and the rear plate 23 are fixed is slidably provided on a bed 34, and the base 33 is moved closer to the fixed plate 6 by a hydraulic cylinder 35, and The structure is such that the nozzle 36 can be brought into contact with the mold 5.
【００１５】上記の構成とされた型締装置２のトグル機
構１２のトグルリンクの各関節部分と、タイロッド８を
摺動する可動盤１１の摺動部分等、及び射出装置３のガ
イドロッド２４を摺動するプッシャプレート２８及び補
助プレート２９の摺動部分と、基台３３の摺動部分、つ
まり給油箇所にはそれぞれグリースニップル（潤滑油ニ
ップル）４１が設けられている。The joints of the toggle link of the toggle mechanism 12 of the mold clamping device 2 having the above structure, the sliding portion of the movable platen 11 that slides the tie rod 8, and the guide rod 24 of the injection device 3 are connected to each other. A grease nipple (lubricating oil nipple) 41 is provided on each of the sliding portions of the sliding pusher plate 28 and auxiliary plate 29 and the sliding portion of the base 33, that is, the lubrication point.
【００１６】各グリースニップル４１は、分配器４２に
設けられた計量バルブ（計量手段）４３Ａ，４３Ｂ，４
３Ｃ，４３Ｄ，４３Ｅ，４３Ｆ，４３Ｇ，４３Ｈ，４３
Ｉに配管４４Ａ，４４Ｂ，４４Ｃ，４４Ｄ，４４Ｅ，４
４Ｆ，４４Ｇ，４４Ｈ，４４Ｉよってそれぞれ接続され
ている。そして、分配器４２には、自動給油装置４６が
給油管４７で接続されている。Each grease nipple 41 is provided with a metering valve (measuring means) 43A, 43B, 4 provided in a distributor 42.
3C, 43D, 43E, 43F, 43G, 43H, 43
Pipes 44A, 44B, 44C, 44D, 44E, 4
4F, 44G, 44H, and 44I, respectively. An automatic refueling device 46 is connected to the distributor 42 via a refueling pipe 47.
【００１７】自動給油装置４６は、制御装置（図示せ
ず）や作業員の指令によって作動し、グリース等の潤滑
油を分配器４２に送るものであり、分配器４２は自動給
油装置４６から送られてきた潤滑油を各計量バルブ４３
Ａ〜４３Ｉに分配するものである。The automatic refueling device 46 is operated by a control device (not shown) or an operator's command, and sends lubricating oil such as grease to the distributor 42. The measured lubricating oil is supplied to each measuring valve 43.
A to 43I.
【００１８】各計量バルブ４３Ａ〜４３Ｉは、分配器４
２から送られてきた潤滑油を計量して各グリースニップ
ル４１にそれぞれ供給するもので、外筒５１と、パイプ
５２と、逆止弁５３と、計量スプール５４と、戻しばね
５５によって構成されている。Each of the metering valves 43A to 43I is provided with a distributor 4
The lubricating oil sent from 2 is measured and supplied to each grease nipple 41, and is constituted by an outer cylinder 51, a pipe 52, a check valve 53, a measuring spool 54, and a return spring 55. I have.
【００１９】外筒５１は、潤滑油の受口５１ａを一端に
有する円筒体５１ｂの他端に、潤滑油の吐出口５１ｃを
有する蓋体５１ｄを着脱自在に螺着して成る。またパイ
プ５２は、中心孔５２ａと該中心孔５２ａに連通して半
径方向に放射状に形成された連通孔５２ｂとを有し、中
心孔５２ａを外筒５１の吐出口５１ｃに直線状に連絡す
るとともに、連通孔５２ｂ側の端部を蓋体５１ｄに嵌着
して外筒５１内に同心状に固定されている。パイプ５２
と中心孔５２ａの横断面形状は共に円形である。The outer cylinder 51 has a cylindrical body 51b having a lubricating oil receiving port 51a at one end, and a lid 51d having a lubricating oil discharge port 51c detachably screwed to the other end. The pipe 52 has a center hole 52a and a communication hole 52b communicating with the center hole 52a and radially formed in the radial direction. The center hole 52a is linearly connected to the discharge port 51c of the outer cylinder 51. At the same time, the end on the side of the communication hole 52b is fitted to the lid 51d and fixed concentrically in the outer cylinder 51. Pipe 52
The cross-sectional shape of the central hole 52a is circular.
【００２０】逆止弁５３は、受口５１ａから潤滑油を外
筒５１内に押し入れると、図２の（Ｂ）のように、大径
部５３ａを潤滑油の圧力で窄ませてパイプ５２側への潤
滑油の流動を自由にすると共に、潤滑油によってパイプ
５２の端面に当接して中心孔５２ａを閉塞し、また潤滑
油の上記の逆の流れに対しては、図２の（Ｄ）のよう
に、大径部５３ａを拡径して後退し、受口５１ａを閉塞
して潤滑油の逆流を阻止するとともに、パイプ５２の端
面から離れて中心孔５２ａの閉塞を解くもので、縮径
（拡径）自在な構造となっており、外筒５１の受口５１
ａとパイプ５２との間に外筒５１の長手方向に移動自在
に装入されている。When the lubricating oil is pushed into the outer cylinder 51 from the receiving port 51a, the check valve 53 narrows the large diameter portion 53a by the pressure of the lubricating oil as shown in FIG. In addition to making the flow of the lubricating oil to the side free, the lubricating oil abuts against the end face of the pipe 52 to close the center hole 52a. ), The large-diameter portion 53a is enlarged and retracted, and the receiving port 51a is closed to prevent the backflow of the lubricating oil, and the center hole 52a is separated from the end face of the pipe 52 to open the center hole 52a. The diameter of the outer cylinder 51 can be reduced.
a and the pipe 52 is movably inserted in the longitudinal direction of the outer cylinder 51.
【００２１】また、計量スプール５４は、受口５１ａか
ら外筒５１内に押し入れられた潤滑油により吐出口５１
ｃ側に押し動かされて収容室Ｒ内の潤滑油を連通孔５２
ｂを通じて吐出口５１ｃから吐出させるもので、円筒状
の本体５４ａとシールリング５４ｂ及び筒部５４ｃから
成り、連通孔５２ｂに通じる収容室Ｒを形成して外筒５
１の内周面とパイプ５２の外周面との間に外筒５１及び
パイプ５２の長手方向に移動自在にかつ液密に嵌装され
ている。パイプ５２には、多数の透孔が形成されたスト
ッパ部材５７が嵌着され、計量スプール５４を所定の後
退位置で止めるようになっている。The measuring spool 54 is provided with a discharge port 51 by lubricating oil pushed into the outer cylinder 51 from the receiving port 51a.
The lubricating oil in the storage chamber R is pushed to the side
b, discharges from the discharge port 51c, and comprises a cylindrical main body 54a, a seal ring 54b, and a cylindrical portion 54c.
The outer cylinder 51 and the pipe 52 are movably and liquid-tightly fitted in the longitudinal direction of the outer cylinder 51 and the pipe 52 between the inner peripheral surface of the pipe 1 and the outer peripheral surface of the pipe 52. A stopper member 57 having a large number of through holes is fitted into the pipe 52 so as to stop the measuring spool 54 at a predetermined retreat position.
【００２２】また、戻しばね５５は、潤滑油によって吐
出口５１ｃ側に移動させられた計量スプール５４を受口
５１ａ側に移動させるもので、蓋体５１ｄと計量スプー
ル５４の本体５４ａのフランジ５４ｄとの間に、計量ス
プール５４を受口５１ａ側に付勢して装入されている。The return spring 55 moves the measuring spool 54 moved to the discharge port 51c side by the lubricating oil to the receiving port 51a side. The return spring 55 is connected to the lid 51d and the flange 54d of the main body 54a of the measuring spool 54. During this time, the measuring spool 54 is biased toward the receiving port 51a and inserted.
【００２３】各計量バルブ４３Ａ〜４３Ｉは、円筒体５
１ｂの受口５１ａ側の端部をそれぞれ分配器４２に着脱
自在に螺着され、また蓋体５１ｄに配管４４Ａ〜４４Ｉ
をそれぞれ着脱自在に螺着して設けられている。Each of the measuring valves 43A to 43I is
1b is detachably screwed to the distributor 42 at an end on the side of the receiving port 51a, and pipes 44A to 44I are attached to the lid 51d.
Are detachably screwed to each other.
【００２４】各計量バルブ４３Ａ〜４３Ｉの各給油箇所
に対する潤滑油供給量（吐出量）は、給油箇所が摺動部
の場合、射出成形機の給油箇所の空間容積、運転頻度、
運転速度、運転時の負荷、運転時の温度、運転ストロー
ク長さ、給油箇所の重要度、潤滑油自体の特性のうちの
一つ以上のパラメータによって定め、また給油箇所が回
転部の場合は、上記のパラメータ、平均回転数、許容最
大回転数、回転支持部材のうちの一つ以上のパラメータ
によって定める。When the lubricating oil supply amount (discharge amount) of each of the measuring valves 43A to 43I at each lubricating point is a sliding part, the lubricating oil supply amount is the space volume, the operating frequency,
Determined by one or more of the following parameters: operating speed, operating load, operating temperature, operating stroke length, importance of lubrication point, and characteristics of lubricating oil itself.If the lubrication point is a rotating part, It is determined by at least one of the above parameters, the average rotation speed, the maximum allowable rotation speed, and the rotation support member.
【００２５】具体的な計量バルブの選定方法の一例を、
軸の回転を深溝玉軸受にて保持している給油箇所につい
て説明すると、この給油箇所特有のパラメータとして以
下のものを設定する。 平均回転数 ：ｎ（ｒｐｍ） 回転部の温度：Ｔ（℃） ベアリングの許容回転数：Ｎｍａｘ（ｒｐｍ） ベアリング部の空間容積：Ｖ（ｃｍ3） ところで、一般に汎用グリースの寿命は以下の式によっ
て表される。 ｌｏｇｔ＝（６．５４−２．６ｎ／Ｎｍａｘ） −（０．０２５−０．０１２ｎ／Ｎｍａｘ）Ｔ … （１） ここで、ｔ：平均グリース寿命（ｈ） 仮に平均回転数ｎを２０００ｒｐｍ、回転部の温度を６
０℃、ベアリングの許容回転数を４０００ｒｐｍとする
と、（１）式より、 ｔ＝１２５８９（ｈ） … （２） を得る。An example of a specific method of selecting a measuring valve is as follows.
A description will be given of a lubrication point where the rotation of the shaft is held by a deep groove ball bearing. The following parameters are set as parameters specific to this lubrication point. Average number of revolutions: n (rpm) Temperature of rotating part: T (° C.) Allowable number of revolutions of bearing: Nmax (rpm) Space volume of bearing part: V (cm 3 ) By the way, the life of general-purpose grease is generally given by the following equation. expressed. logt = (6.54-2.6 n / Nmax)-(0.025-0.012 n / Nmax) T (1) where, t: average grease life (h) Assuming that the average rotation speed n is 2000 rpm and the rotation is 6 parts temperature
Assuming that the rotation speed of the bearing is 4000 rpm at 0 ° C., t = 12589 (h) (2) is obtained from the equation (1).
【００２６】ベアリング部のグリースが入りうる空間容
積をＶ＝１０ｃｍ3とし、自動給油装置４６の駆動イン
ターバルを二四時間とすれば、１回の吐出で最低限必要
な吐出量ΔＶは、 ΔＶ＝Ｖ×２４／ｔ＝０．０２（ｃｍ3） … （３） を得る。よって、１回当りの潤滑油吐出量が０．０２ｃ
ｃの計量バルブを選定すれば良い。If the space volume in which grease in the bearing portion can enter is V = 10 cm 3 and the drive interval of the automatic refueling device 46 is 24 hours, the minimum required discharge amount ΔV per discharge is ΔV = V × 24 / t = 0.02 (cm 3 ) (3) is obtained. Therefore, the lubricating oil discharge amount per operation is 0.02c.
What is necessary is just to select the measuring valve of c.
【００２７】上例のようにして、各計量バルブ４３Ａ〜
４３Ｉは、それらの給油箇所に適合した吐出量のものが
選定される。As in the above example, each of the metering valves 43A to 43A
For 43I, a discharge amount suitable for those refueling points is selected.
【００２８】上記構成とされた射出成形機における自動
潤滑装置の作用を説明すると、自動給油装置４６は所定
の駆動インターバルで作動して潤滑油を分配器４２を介
して各計量バルブ４３Ａ〜４３Ｉに送る。分配器４２か
ら計量バルブの受口５１ａに圧入された潤滑油は、逆止
弁５３をパイプ５２の端面に当接させてその中心孔５２
ａを閉じさせるとともに、逆止弁５３の大径部５３ａを
縮径させて逆止弁５３の部分を通過し、ストッパ部材５
７の透孔を通って計量スプール５４を蓋体５１ｄ側に押
し動かす。この計量スプール５４の移動で収容室Ｒ内の
潤滑油は、連通孔５２ｂと中心孔５２ａを通り、吐出口
５１ｃから吐出されてグリースニップル４１から給油箇
所に供給される。The operation of the automatic lubricating device in the injection molding machine having the above-described configuration will be described. send. The lubricating oil press-fitted into the receiving port 51a of the metering valve from the distributor 42 causes the check valve 53 to abut on the end face of the pipe 52 and the center hole 52 thereof.
a, the large-diameter portion 53a of the check valve 53 is reduced in diameter to pass through the check valve 53, and the stopper member 5
The measuring spool 54 is pushed and moved toward the lid 51d through the through hole 7. By the movement of the measuring spool 54, the lubricating oil in the storage chamber R passes through the communication hole 52b and the center hole 52a, is discharged from the discharge port 51c, and is supplied from the grease nipple 41 to the lubrication point.
【００２９】計量スプール５４が蓋体５１ｄに、図２の
（Ｃ）のように突き当って停止すると、その計量バルブ
からの潤滑油の吐出が完了し、その後は、受口５１ａへ
の潤滑油の圧入を継続してもそれ以上潤滑油が吐出され
ることはない。換言すれば、計量バルブ４３Ａ〜４３Ｉ
の１回の作動で所定量の潤滑油が吐出される。すべての
計量バルブ４３Ａ〜４３Ｉが吐出を完了するのを待って
自動給油装置４６が停止する。When the measuring spool 54 abuts against the lid 51d as shown in FIG. 2C and stops, the discharge of the lubricating oil from the measuring valve is completed, and thereafter, the lubricating oil is discharged to the receiving port 51a. Even if the press-fitting is continued, no more lubricating oil is discharged. In other words, the metering valves 43A to 43I
A predetermined amount of lubricating oil is discharged by one operation of. The automatic refueling device 46 stops after all the metering valves 43A to 43I have completed the discharge.
【００３０】自動給油装置４６が停止して受口５１ａへ
の潤滑油の圧入が止まると、計量スプール５４は戻しば
ね５５の作用によって元の状態に押し戻される。この
時、逆止弁５３は潤滑油で押されてパイプ５２の端面か
ら離され、中心孔５２ａを開くとともに受口５１ａを塞
いで潤滑油の逆流を止める。このため、計量スプール５
４と逆止弁５３の間の潤滑油は、図２の（Ｄ）のよう
に、中心孔５２ａと逆止弁５２ｂを通って収容室Ｒに入
り計量バルブの次の作動に備える。When the automatic lubrication device 46 is stopped and the pressurization of the lubricating oil into the receiving port 51a is stopped, the measuring spool 54 is pushed back to the original state by the action of the return spring 55. At this time, the check valve 53 is pushed by the lubricating oil and separated from the end face of the pipe 52, opens the center hole 52a and closes the receiving port 51a to stop the reverse flow of the lubricating oil. For this reason, the measuring spool 5
The lubricating oil between 4 and the check valve 53 enters the accommodation chamber R through the center hole 52a and the check valve 52b and prepares for the next operation of the metering valve as shown in FIG.
【００３１】なお、図１は油圧式の射出成形機で、その
代表的な給油箇所しか示されていないが、図示以外の給
油箇所も対象となることは言うまでもない。また、油圧
式射出成形機に限らず、電動式射出成形機にも実施する
ことができ、射出成形機の構造は任意である。図の計量
バルブは、計量スプール５４の長さや円筒体５１ｂに対
する蓋体５１ｄの螺着深さを変えることにより、収容室
Ｒの容積を変えて潤滑油吐出量を比較的簡単に調整する
ことができるが、他の構造のものであってもよい。Although FIG. 1 shows a hydraulic injection molding machine, only typical lubricating points are shown, it goes without saying that lubricating points other than those shown are also applicable. Further, the present invention can be applied not only to the hydraulic injection molding machine but also to an electric injection molding machine, and the structure of the injection molding machine is arbitrary. The metering valve shown in the drawing can change the length of the measuring spool 54 and the screwing depth of the lid 51d with respect to the cylindrical body 51b to change the volume of the storage chamber R to relatively easily adjust the lubricating oil discharge amount. Although it is possible, other structures may be used.
【００３２】[0032]
【発明の効果】以上説明したように、請求項１記載の発
明によれば、各給油箇所に必要な量の潤滑油を過不足な
く供給することができる。したがって、潤滑不足による
動作不良や早期摩耗、及び潤滑過多による機械や製品の
汚染を防止することができる。As described above, according to the first aspect of the present invention, a required amount of lubricating oil can be supplied to each oil supply point without excess or shortage. Therefore, it is possible to prevent malfunction and early wear due to insufficient lubrication and contamination of machines and products due to excessive lubrication.
【００３３】また、請求項２記載の構成とした場合は、
潤滑油供給量の微調整を容易にすることができる。Also, in the case of the structure of claim 2,
Fine adjustment of the lubricating oil supply amount can be facilitated.
【図１】 本発明に係る射出成形機における自動潤滑装
置の実施の形態を示す図である。FIG. 1 is a view showing an embodiment of an automatic lubrication device in an injection molding machine according to the present invention.
【図２】 計量バルブの一例を示す断面図である。FIG. 2 is a sectional view showing an example of a metering valve.
【図３】 従来の射出成形機における自動潤滑装置の図
である。FIG. 3 is a diagram of an automatic lubrication device in a conventional injection molding machine.
１ 射出成形機 ４２ 分配
器 ４３Ａ〜４３Ｉ 計量バルブ（計量手段） ４６ 自動
給油装置 ５１ 外筒 ５１ａ 受
口 ５１ｃ 吐出口 ５２ パイ
プ ５２ａ 中心孔 ５２ｂ 連
通孔 ５３ 逆止弁 ５４ 計量
スプール ５５ 戻しばね Ｒ 収容室DESCRIPTION OF SYMBOLS 1 Injection molding machine 42 Distributor 43A-431 I Measuring valve (measuring means) 46 Automatic lubrication device 51 Outer cylinder 51a Reception port 51c Discharge port 52 Pipe 52a Center hole 52b Communication hole 53 Check valve 54 Measuring spool 55 Return spring R Storage chamber
Claims (2)
いてグリース等の潤滑油を供給する射出成形機における
自動潤滑装置であって、 上記計量手段の各給油箇所に対する潤滑油供給量は、射
出成形機の給油箇所の空間容積、運転頻度、運転速度、
運転時の負荷、運転時の温度、運転ストローク長さ、給
油箇所の重要度、潤滑油自体の特性、平均回転数、許容
最大回転数、回転支持部材のうちの１以上のパラメータ
によって定められたことを特徴とする射出成形機におけ
る自動潤滑装置。1. An automatic lubricating apparatus for an injection molding machine for supplying lubricating oil such as grease to each lubricating point of an injection molding machine using a measuring means, wherein a lubricating oil supply amount for each lubricating point of the measuring means is , Spatial volume of the lubrication point of the injection molding machine, operation frequency, operation speed,
It is determined by at least one of the following parameters: load during operation, temperature during operation, operation stroke length, importance of lubrication point, characteristics of lubricating oil itself, average rotation speed, allowable maximum rotation speed, and rotation support member. An automatic lubrication device for an injection molding machine, characterized in that:
端に有する外筒と、 中心孔と該中心孔に連通された連通孔とを有し、上記中
心孔を上記吐出口に連絡して外筒内に同心状に固定され
たパイプと、 上記外筒の受口と上記パイプとの間に、外筒の長手方向
に移動自在に装入され、受口から外筒内に押し入られる
潤滑油のパイプ側への流動を自由にしてその逆の流動を
阻止し、また受口から外筒内に押し入れた潤滑油によっ
てパイプの端面に当接して中心孔を閉塞する逆止弁と、 上記連通孔に通じる収容室を形成して上記外筒とパイプ
との間に外筒の長手方向に移動自在に嵌装され、受口か
ら外筒内に押し入れられた潤滑油により吐出口側に押し
動かされて上記収容室内の潤滑油を連通孔を通じて吐出
口から吐出させる計量スプールと、 上記で吐出口側に移動させられた計量スプールを受口側
に移動させて計量スプールと逆止弁の間の潤滑油をパイ
プの中心孔と連通孔を通じて収容室内に流入させる戻し
ばねとを具備した計量バルブとされたことを特徴とする
請求項１記載の射出成形機における自動潤滑装置。2. The metering means has an outer cylinder having a lubricating oil receiving port and a discharge port at both ends, a center hole and a communication hole communicating with the center hole, and the center hole is connected to the discharge port. A pipe that is concentrically fixed in the outer cylinder by contact, and between the socket of the outer cylinder and the pipe, is movably inserted in the longitudinal direction of the outer cylinder, and is inserted into the outer cylinder from the socket. A check that frees the flow of lubricating oil to the pipe side and prevents the reverse flow, and closes the center hole by contacting the pipe end surface with the lubricating oil pushed into the outer cylinder from the receiving port A valve and a storage chamber communicating with the communication hole are formed, fitted between the outer cylinder and the pipe so as to be movable in the longitudinal direction of the outer cylinder, and discharged by lubricating oil pushed into the outer cylinder from the receiving port. A measuring spool that is pushed to the outlet side to discharge the lubricating oil in the storage chamber from the discharge port through the communication hole; And a return spring for moving the measuring spool moved to the discharge port side to the receiving port side so that the lubricating oil between the measuring spool and the check valve flows into the accommodation chamber through the center hole and the communication hole of the pipe. 2. The automatic lubrication device in an injection molding machine according to claim 1, wherein the automatic lubrication device is a metering valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10358272A JP2000176985A (en) | 1998-12-16 | 1998-12-16 | Automatic lubricating device for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10358272A JP2000176985A (en) | 1998-12-16 | 1998-12-16 | Automatic lubricating device for injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000176985A true JP2000176985A (en) | 2000-06-27 |
Family
ID=18458435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10358272A Pending JP2000176985A (en) | 1998-12-16 | 1998-12-16 | Automatic lubricating device for injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000176985A (en) |
Cited By (6)
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|---|---|---|---|---|
| JP2004353869A (en) * | 2004-07-14 | 2004-12-16 | I M N Kk | Lubricant supplying method in rotation part support |
| JP2006187874A (en) * | 2004-12-28 | 2006-07-20 | Lube Corp | Injection molding machine |
| WO2007036244A1 (en) * | 2005-09-23 | 2007-04-05 | Demag Ergotech Gmbh | Closing unit for an injection molding machine |
| JP2013121707A (en) * | 2011-12-12 | 2013-06-20 | Japan Steel Works Ltd:The | Grease supply method for injection molding machine |
| WO2016189825A1 (en) * | 2015-05-22 | 2016-12-01 | 川崎重工業株式会社 | Lubricant injection system |
| CN107504355A (en) * | 2017-07-31 | 2017-12-22 | 安徽工程大学 | A kind of stepper motor refuels and uses casing oiling device |
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| JP2004353869A (en) * | 2004-07-14 | 2004-12-16 | I M N Kk | Lubricant supplying method in rotation part support |
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| WO2016189825A1 (en) * | 2015-05-22 | 2016-12-01 | 川崎重工業株式会社 | Lubricant injection system |
| JP2016215344A (en) * | 2015-05-22 | 2016-12-22 | 川崎重工業株式会社 | Lubricant injection system |
| TWI596294B (en) * | 2015-05-22 | 2017-08-21 | Kawasaki Heavy Ind Ltd | Lubricant injection system |
| CN107530883A (en) * | 2015-05-22 | 2018-01-02 | 川崎重工业株式会社 | Lubricant injected system |
| US10605404B2 (en) | 2015-05-22 | 2020-03-31 | Kawasaki Jukogyo Kabushiki Kaisha | Lubricant injection system |
| CN107504355A (en) * | 2017-07-31 | 2017-12-22 | 安徽工程大学 | A kind of stepper motor refuels and uses casing oiling device |
| CN107504355B (en) * | 2017-07-31 | 2019-06-21 | 安徽工程大学 | A kind of stepper motor oiling casing oiling device |
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