TWI654067B - Injection molding machine - Google Patents

Injection molding machine

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Publication number
TWI654067B
TWI654067B TW104131815A TW104131815A TWI654067B TW I654067 B TWI654067 B TW I654067B TW 104131815 A TW104131815 A TW 104131815A TW 104131815 A TW104131815 A TW 104131815A TW I654067 B TWI654067 B TW I654067B
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TW
Taiwan
Prior art keywords
mold
injection molding
molding machine
control
ejection
Prior art date
Application number
TW104131815A
Other languages
Chinese (zh)
Other versions
TW201615380A (en
Inventor
山口毅秀
柴田達也
中村徹
雷磊
Original Assignee
日商住友重機械工業股份有限公司
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Application filed by 日商住友重機械工業股份有限公司 filed Critical 日商住友重機械工業股份有限公司
Publication of TW201615380A publication Critical patent/TW201615380A/en
Application granted granted Critical
Publication of TWI654067B publication Critical patent/TWI654067B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/64Mould opening, closing or clamping devices
    • B29C45/66Mould opening, closing or clamping devices mechanical
    • B29C45/661Mould opening, closing or clamping devices mechanical using a toggle mechanism for mould clamping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • B29C45/4005Ejector constructions; Ejector operating mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/64Mould opening, closing or clamping devices
    • B29C45/66Mould opening, closing or clamping devices mechanical
    • B29C45/661Mould opening, closing or clamping devices mechanical using a toggle mechanism for mould clamping
    • B29C2045/662Mould opening, closing or clamping devices mechanical using a toggle mechanism for mould clamping using toggles directly connected or linked to the fixed platen and indirectly to the movable platen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76498Pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76655Location of control
    • B29C2945/76702Closure or clamping device
    • B29C2945/76709Closure or clamping device clamping or closing drive means

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

本發明提供一種能夠使成形品的品質穩定的射出成形機。本發明的射出成形機具有:壓縮構件的驅動裝置,該壓縮構件用於壓縮模具裝置內的成形材料;及控制器,控制前述驅動裝置,前述控制器在壓縮前述模具裝置內的成形材料的壓縮行程中途,將前述驅動裝置的控制在位置控制和壓力控制之間進行切換。 The present invention provides an injection molding machine capable of stabilizing the quality of a molded product. The injection molding machine of the present invention includes a driving device for a compression member for compressing a molding material in a mold device, and a controller that controls the driving device, and the controller compresses compression of the molding material in the mold device. During the stroke, the control of the driving device is switched between position control and pressure control.

Description

射出成形機 Injection molding machine

本申請主張基於2014年10月22日申請之日本專利申請第2014-215728號之優先權。該日本申請之全部內容藉由參閱援用於本說明書中。 This application claims priority based on Japanese Patent Application No. 2014-215728 filed on October 22, 2014. The entire contents of this Japanese application are incorporated herein by reference.

本發明係有關一種射出成形機。 The present invention relates to an injection molding machine.

具有用於壓縮模具裝置內的成形材料之壓縮構件的驅動裝置的射出成形機(例如參閱專利文獻1)是已知的。藉由壓縮構件壓縮成形材料,可獲得薄壁的成形品。 An injection molding machine (see, for example, Patent Document 1) having a driving device for compressing a compression member of a molding material in a mold device is known. By compressing the molding material with the compression member, a thin-walled molded product can be obtained.

(先前技術文獻) (Prior technical literature) (專利文獻) (Patent Literature)

專利文獻1:日本特開2012-187769號公報 Patent Document 1: Japanese Patent Application Publication No. 2012-187769

以往,藉由壓縮成形材料而成的成形品的品質偏差較大。 Conventionally, the quality variation of a molded product obtained by compressing a molding material has been large.

本發明是鑑於上述課題而完成的,其主要目的在於提供一種能夠使成形品的品質穩定的射出成形機。 This invention is made in view of the said subject, The main objective is to provide the injection molding machine which can stabilize the quality of a molded article.

為了解決上述課題,依本發明的一態樣,提供如下射出成形機,係具有:壓縮構件的驅動裝置,該壓縮構件用於壓縮模具裝置內的成形材料;及控制器,控制前述驅動裝置,前述控制器在壓縮前述模具裝置內的成形材料的壓縮行程中途,將前述驅動裝置的控制在位置控制和壓力控制之間進行切換。 In order to solve the above-mentioned problems, according to an aspect of the present invention, there is provided an injection molding machine having a driving device for a compression member for compressing a molding material in a mold device, and a controller for controlling the driving device, The controller switches the control of the drive device between position control and pressure control during a compression stroke of compressing the molding material in the mold device.

依本發明的一態樣,提供一種能夠使成形品的品質穩定的射出成形機。 According to one aspect of the present invention, an injection molding machine capable of stabilizing the quality of a molded product is provided.

30‧‧‧模具裝置 30‧‧‧Mould device

32‧‧‧固定模 32‧‧‧Fixed

33‧‧‧可動模 33‧‧‧ movable mold

34‧‧‧模穴空間 34‧‧‧Mould cavity space

36‧‧‧壓縮構件 36‧‧‧ Compression member

40‧‧‧射出裝置 40‧‧‧ injection device

42‧‧‧成形材料 42‧‧‧Forming materials

50‧‧‧中間裝置 50‧‧‧ intermediate device

51‧‧‧塊體 51‧‧‧block

60‧‧‧頂出裝置 60‧‧‧ Ejector

61‧‧‧頂出馬達 61‧‧‧Ejector motor

61a‧‧‧編碼器 61a‧‧‧Encoder

62‧‧‧運動轉換機構 62‧‧‧Motion Conversion Agency

63‧‧‧頂出桿 63‧‧‧ Ejection

64‧‧‧頂出板 64‧‧‧ ejector board

65‧‧‧位置感測器 65‧‧‧Position sensor

66‧‧‧壓力感測器 66‧‧‧Pressure sensor

70‧‧‧控制器 70‧‧‧controller

第1圖係表示本發明的一實施形態之射出成形機的壓縮行程開始時的狀態之圖。 FIG. 1 is a diagram showing a state at the start of a compression stroke of an injection molding machine according to an embodiment of the present invention.

第2圖係表示本發明的一實施形態之射出成形機的壓縮行程結束時的狀態之圖。 Fig. 2 is a diagram showing a state at the end of a compression stroke of an injection molding machine according to an embodiment of the present invention.

第3圖係表示本發明的一實施形態之射出成形機的壓縮行程之流程圖。 Fig. 3 is a flowchart showing a compression stroke of an injection molding machine according to an embodiment of the present invention.

以下,參閱附圖對用於實施本發明的形態進行說明,在各附圖中對相同或相應之結構標註相同或相對應之元件符號,以省略說明。 Hereinafter, the embodiments for implementing the present invention will be described with reference to the drawings, and the same or corresponding components are labeled with the same or corresponding element symbols in each drawing to omit description.

第1圖係表示本發明的一實施形態之射出成形機的壓縮行程開始時的狀態之圖。第2圖係表示本發明的一實施形態之射出成形機的壓縮行程結束時的狀態之圖。如第1圖及第2圖所示,射出成形機具有框架Fr、合模裝置10、射出裝置40、中間裝置50、頂出裝置60及控制器70等。 FIG. 1 is a diagram showing a state at the start of a compression stroke of an injection molding machine according to an embodiment of the present invention. Fig. 2 is a diagram showing a state at the end of a compression stroke of an injection molding machine according to an embodiment of the present invention. As shown in FIGS. 1 and 2, the injection molding machine includes a frame Fr, a mold clamping device 10, an injection device 40, an intermediate device 50, an ejection device 60, a controller 70, and the like.

合模裝置10進行模具裝置30的閉模、合模及開模。模具裝置30由固定模32和可動模33構成。合模裝置10具有固定壓板12、可動壓板13、後壓板15、繫桿16、肘節機構20、合模馬達21及運動轉換機構25。以下說明中,將閉模時的可動壓板13的移動方向(第1圖及第2圖中為右方向)作為前方,將開模時的可動壓板13的移動方向(第1圖及第2圖中為左方向)作為後方來進行說明。 The mold clamping device 10 performs mold closing, mold clamping, and mold opening of the mold device 30. The mold device 30 includes a fixed mold 32 and a movable mold 33. The mold clamping device 10 includes a fixed platen 12, a movable platen 13, a rear platen 15, a tie rod 16, a toggle mechanism 20, a mold clamping motor 21, and a motion conversion mechanism 25. In the following description, the moving direction of the movable platen 13 when the mold is closed (the right direction in the first and second figures) is taken as the front, and the moving direction of the movable platen 13 when the mold is opened (the first and second figures) The middle direction is the left direction).

固定壓板12固定於框架Fr。在固定壓板12之與可動壓板13對向的面上安裝有固定模32。 The fixed platen 12 is fixed to the frame Fr. A fixed die 32 is mounted on a surface of the fixed platen 12 that faces the movable platen 13.

可動壓板13沿著舖設於框架Fr上之導件(例如導軌)17可移動自如,且相對於固定壓板12可進退自如。在可動壓板13之與固定壓板12相對向的面上,透過中間 裝置50安裝有可動模33。 The movable platen 13 can move freely along a guide (such as a guide rail) 17 laid on the frame Fr, and can move forward and backward relative to the fixed platen 12. The movable platen 13 faces the fixed platen 12 through the middle The device 50 is equipped with a movable mold 33.

藉由使可動壓板13相對於固定壓板12進退,來進行模具裝置30的閉模、合模及開模。 By moving the movable platen 13 forward and backward with respect to the fixed platen 12, the mold device 30 is closed, closed, and opened.

後壓板15隔著間隔與固定壓板12連結,且在模開閉方向上可移動自如地載置於框架Fr上。另外,後壓板15亦可以構成為沿著舖設於框架Fr上之導件可移動自如。後壓板15的導件可以與可動壓板13的導件17通用。 The rear platen 15 is connected to the fixed platen 12 at intervals, and is movably mounted on the frame Fr in the mold opening and closing direction. In addition, the rear pressure plate 15 may be configured to be movable along a guide member laid on the frame Fr. The guide of the rear pressure plate 15 may be used in common with the guide 17 of the movable pressure plate 13.

另外,本實施形態中,固定壓板12固定於框架Fr,後壓板15相對於框架Fr沿著模開閉方向可移動自如,但亦可以是後壓板15固定於框架Fr,固定壓板12相對於框架Fr沿著模開閉方向可移動自如。 In addition, in this embodiment, the fixed platen 12 is fixed to the frame Fr, and the rear platen 15 is free to move in the mold opening and closing direction with respect to the frame Fr. However, the rear platen 15 may be fixed to the frame Fr, and the fixed platen 12 may be fixed to the frame Fr Move freely along the mold opening and closing direction.

繫桿16將固定壓板12與後壓板15隔著間隔予以連結。可以使用複數根繫桿16。各繫桿16與模開閉方向平行,且對應於合模力而延伸。在至少1根繫桿16設有合模力檢測器18。合模力檢測器18可以是應變儀式,藉由檢測繫桿16的變形來檢測合模力。 The tie bar 16 connects the fixed platen 12 and the rear platen 15 at intervals. A plurality of tie rods 16 may be used. Each tie bar 16 is parallel to the mold opening and closing direction and extends in accordance with the mold clamping force. A clamping force detector 18 is provided on at least one tie rod 16. The clamping force detector 18 may be a strain ceremony, and detects the clamping force by detecting the deformation of the tie rod 16.

另外,合模力檢測器18並不限定於應變儀式,亦可以是壓電式、電容式、油壓式、電磁式等,且其安裝位置亦不限定於繫桿16。 In addition, the clamping force detector 18 is not limited to a strain ceremony, but may be a piezoelectric type, a capacitive type, a hydraulic type, an electromagnetic type, and the like, and its installation position is not limited to the tie rod 16.

肘節機構20配置於可動壓板13與後壓板15之間。肘節機構20由十字頭20a、複數個連桿20b、20c等構成。其中一個連桿20b可擺動自如地安裝於可動壓板13,另一個連桿20c可擺動自如地安裝於後壓板15。這些連桿20b、20c藉由銷等被連結成可伸縮自如。藉由使 十字頭20a進退,複數個連桿20b、20c進行伸縮,藉此使可動壓板13相對於後壓板15進退。 The toggle mechanism 20 is disposed between the movable platen 13 and the rear platen 15. The toggle mechanism 20 includes a cross head 20a, a plurality of links 20b, 20c, and the like. One of the links 20 b is swingably mounted on the movable platen 13, and the other link 20 c is swingably mounted on the rear platen 15. These links 20b and 20c are connected by a pin or the like to be expandable and contractible. By making The cross head 20a advances and retreats, and the plurality of links 20b, 20c expand and contract, thereby moving the movable platen 13 forward and backward relative to the rear platen 15.

合模馬達21安裝於後壓板15,藉由使十字頭20a進退來使可動壓板13進退。在合模馬達21與十字頭20a之間設有:將合模馬達21的旋轉運動轉換成直線運動而傳遞到十字頭20a的運動轉換機構25。運動轉換機構25例如由滾珠螺桿機構構成。 The mold clamping motor 21 is attached to the rear platen 15 and advances and retracts the movable platen 13 by advancing and retreating the crosshead 20a. Between the mold clamping motor 21 and the crosshead 20a, there is provided a motion conversion mechanism 25 that converts the rotary motion of the mold clamping motor 21 into a linear motion and transmits the linear motion to the crosshead 20a. The motion conversion mechanism 25 is configured by, for example, a ball screw mechanism.

合模裝置10的動作藉由控制器70進行控制。控制器70控制閉模製程、合模製程及開模製程等。 The operation of the mold clamping device 10 is controlled by a controller 70. The controller 70 controls a closed mold process, a mold closing process, an open mold process, and the like.

閉模製程中,驅動合模馬達21來使可動壓板13前進,藉此使可動模33與固定模32接觸。在可動模33側配設有壓縮構件36,在壓縮構件36與固定模32之間形成有模穴空間34。壓縮構件36構成為在模具裝置30內可進退自如。 During the mold closing process, the mold clamping motor 21 is driven to advance the movable platen 13, thereby bringing the movable mold 33 into contact with the fixed mold 32. A compression member 36 is disposed on the movable mold 33 side, and a cavity space 34 is formed between the compression member 36 and the fixed mold 32. The compression member 36 is configured to be movable forward and backward in the mold device 30.

合模製程中,藉由進一步驅動合模馬達21來產生合模力。合模時,射出裝置40向模穴空間34填充液態的成形材料42。在進行該填充的中途開始使壓縮構件36在模具裝置30內移動,藉此進行成形材料42的壓縮。填充製程之後,進行保壓製程、冷卻製程。保壓製程中,向模穴空間34內的成形材料42施加壓力。冷卻製程中,使模穴空間34內的成形材料42固化而獲得成形品。 During the mold clamping process, the mold clamping force is generated by further driving the mold clamping motor 21. When the mold is closed, the injection device 40 fills the cavity space 34 with a liquid molding material 42. The compression member 36 is started to move in the mold device 30 in the middle of this filling, and thereby the compression of the molding material 42 is performed. After the filling process, a holding process and a cooling process are performed. During the holding process, pressure is applied to the molding material 42 in the cavity space 34. In the cooling process, the molding material 42 in the cavity space 34 is solidified to obtain a molded product.

開模製程中,驅動合模馬達21來使可動壓板13後退,藉此使可動模33與固定模32分開。開模製程結束後,頂出裝置60從模具裝置30頂出成形品。 During the mold opening process, the mold clamping motor 21 is driven to move the movable platen 13 backward, thereby separating the movable mold 33 from the fixed mold 32. After the mold-opening process is completed, the ejection device 60 ejects the molded product from the mold device 30.

中間裝置50配設於可動模33與可動壓板13之間。中間裝置50例如具有塊體51。壓縮構件36的後端部插入於塊體51的內部空間51a。 The intermediate device 50 is disposed between the movable mold 33 and the movable platen 13. The intermediate device 50 includes, for example, a block 51. The rear end portion of the compression member 36 is inserted into the internal space 51 a of the block 51.

頂出裝置60在開模之後從模具裝置30頂出成形品。頂出裝置60例如具有頂出馬達61、運動轉換機構62、頂出桿63。 The ejection device 60 ejects the molded product from the mold device 30 after the mold is opened. The ejection device 60 includes, for example, an ejection motor 61, a motion conversion mechanism 62, and an ejection lever 63.

頂出馬達61安裝於可動壓板13的後面。頂出馬達61具有編碼器61a。編碼器61a檢測該頂出馬達61的輸出軸的旋轉角,並將表示該旋轉角的訊號輸出到控制器70。 The ejection motor 61 is attached to the rear of the movable platen 13. The ejection motor 61 includes an encoder 61a. The encoder 61 a detects a rotation angle of the output shaft of the ejection motor 61 and outputs a signal indicating the rotation angle to the controller 70.

運動轉換機構62將頂出馬達61的旋轉運動轉換成頂出桿63的直線運動。運動轉換機構62例如由滾珠螺桿機構等構成。 The motion conversion mechanism 62 converts a rotary motion of the ejection motor 61 into a linear motion of the ejection lever 63. The motion conversion mechanism 62 is configured by, for example, a ball screw mechanism.

頂出桿63構成為在可動壓板13的貫穿孔內可進退自如。頂出桿63的前端部與頂出板64的後端面接觸。 The ejection lever 63 is configured to move forward and backward freely in the through hole of the movable platen 13. A front end portion of the ejection lever 63 is in contact with a rear end surface of the ejection plate 64.

頂出板64構成為在塊體51的內部空間51a可進退自如。頂出板64的前端面與壓縮構件36的後端部接觸。 The ejection plate 64 is configured to be movable forward and backward in the internal space 51 a of the block 51. A front end surface of the ejection plate 64 is in contact with a rear end portion of the compression member 36.

驅動頂出馬達61來使頂出桿63前進,藉此使壓縮構件36前進。此外,驅動頂出馬達61來使頂出桿63後退,藉此使壓縮構件36後退。 The ejection motor 61 is driven to advance the ejection lever 63, thereby advancing the compression member 36. In addition, the ejection motor 61 is driven to retract the ejection lever 63, thereby retracting the compression member 36.

頂出裝置60發揮壓縮構件36的驅動裝置的功能。壓縮構件36既用於(1)壓縮模具裝置30內的成形材料,亦用於(2)從模具裝置30頂出成形品。 The ejection device 60 functions as a driving device for the compression member 36. The compression member 36 is used for (1) compressing a molding material in the mold device 30 and (2) ejecting a molded product from the mold device 30.

控制器70具有CPU(Central Processing Unit)71和 記憶體等記憶媒體72。控制器70使CPU71執行存儲於記憶媒體72中的程式,藉此控制合模裝置10、射出裝置40及頂出裝置60等。 The controller 70 has a CPU (Central Processing Unit) 71 and Memory medium 72 such as memory. The controller 70 causes the CPU 71 to execute a program stored in the storage medium 72, thereby controlling the mold clamping device 10, the injection device 40, the ejection device 60, and the like.

控制器70在壓縮模穴空間34內的成形材料42的壓縮行程中途將頂出裝置60的控制在位置控制和壓力控制之間進行切換。可以從位置控制切換成壓力控制,亦可以從壓力控制切換成位置控制。 The controller 70 switches the control of the ejection device 60 between the position control and the pressure control during the compression stroke of the molding material 42 in the compression cavity space 34. You can switch from position control to pressure control, or from pressure control to position control.

在頂出裝置60的位置控制,將頂出馬達61控制成使壓縮構件36或與壓縮構件36一起移動的構件的位置成為設定位置。該控制可以是反饋控制或前饋控制中的任一個。可隨著時間的經過連續或斷續地改變設定位置。作為與壓縮構件36一起移動的構件例如可舉出頂出桿63、頂出板64。 In the position control of the ejection device 60, the ejection motor 61 is controlled so that the position of the compression member 36 or a member that moves with the compression member 36 becomes the set position. This control may be any of feedback control or feedforward control. The setting position can be changed continuously or intermittently over time. Examples of the member that moves with the compression member 36 include an ejector lever 63 and an ejector plate 64.

壓縮構件36或與壓縮構件36一起移動的構件的位置藉由位置感測器65來檢測。位置感測器65安裝於固定側的構件(例如第1圖及第2圖中為中間裝置50的塊體51)上,但亦可以安裝於可動側的構件上。另外,作為位置感測器65可使用頂出馬達61的編碼器61a。 The position of the compression member 36 or a member that moves with the compression member 36 is detected by a position sensor 65. The position sensor 65 is mounted on a fixed-side member (for example, the block 51 of the intermediate device 50 in FIGS. 1 and 2), but may be mounted on a movable-side member. In addition, as the position sensor 65, an encoder 61a of the ejection motor 61 can be used.

另一方面,在頂出裝置60的壓力控制中,將頂出馬達61控制成使模穴空間34內的成形材料42的壓力成為設定壓力。該控制可以是反饋控制或前饋控制中的任一個。可隨著時間的經過連續或斷續地改變設定壓力。 On the other hand, in the pressure control of the ejection device 60, the ejection motor 61 is controlled so that the pressure of the molding material 42 in the cavity space 34 becomes a set pressure. This control may be any of feedback control or feedforward control. The set pressure can be changed continuously or intermittently over time.

模穴空間34內的成形材料42的壓力藉由壓力感測器66來檢測。壓力感測器66安裝於可動側的構件(例如第 1圖及第2圖中為壓縮構件36)上,但亦可以安裝於固定側的構件(例如固定模32)上。此外,壓力感測器66亦可以藉由檢測頂出裝置60的構成構件的變形或中間裝置50的構成構件的變形,來檢測模穴空間34內的成形材料42的壓力。 The pressure of the molding material 42 in the cavity space 34 is detected by a pressure sensor 66. The pressure sensor 66 is mounted on a member on the movable side (for example, the first 1 and 2 show the compression member 36), but it may be mounted on a fixed member (for example, the fixed mold 32). In addition, the pressure sensor 66 may detect the pressure of the molding material 42 in the cavity space 34 by detecting the deformation of the component of the ejection device 60 or the deformation of the component of the intermediate device 50.

依本實施形態,在壓縮行程中途進行位置控制與壓力控制的切換。因此,能夠實施與模穴空間34內的成形材料42的填充狀況相對應的控制,而能夠使成形品的品質穩定。壓縮行程藉由位置控制與壓力控制的切換而被分割成複數個製程。 According to this embodiment, the position control and the pressure control are switched in the middle of the compression stroke. Therefore, control corresponding to the filling condition of the molding material 42 in the cavity space 34 can be performed, and the quality of a molded product can be stabilized. The compression stroke is divided into a plurality of processes by switching between position control and pressure control.

例如,控制器70在複數個製程中的最初製程及最後製程的至少一方進行位置控制。 For example, the controller 70 performs position control on at least one of the first process and the last process among the plurality of processes.

藉由在最初製程進行位置控制,能夠使壓縮構件36確實地前進至設定位置,並利用壓縮構件36的前表面將成形材料42擴展。另外,開始壓縮行程時,模穴空間34內的成形材料42的壓力不夠穩定。藉由在最初製程進行位置控制來使成形品的品質穩定。 By performing position control in the initial process, the compression member 36 can be reliably advanced to the set position, and the front surface of the compression member 36 can be used to expand the molding material 42. When the compression stroke is started, the pressure of the molding material 42 in the cavity space 34 is not stable enough. Position control in the initial process stabilizes the quality of the molded product.

藉由在中途製程進行壓力控制,使成形材料42充份地緊壓在模穴空間34的壁面,以提高轉印性。此外,由於成形材料42的壓力穩定,因此成形材料42的密度穩定。 By performing pressure control in the middle of the process, the molding material 42 is fully pressed against the wall surface of the cavity space 34 to improve transferability. In addition, since the pressure of the molding material 42 is stable, the density of the molding material 42 is stable.

藉由在最後製程進行位置控制,模穴空間34的最終大小和形狀變得穩定,且成形品的大小和形狀變得穩定。藉由在最後製程使壓縮構件36前進,使得模穴空間34內 充滿成形材料42,以結束成形材料42的填充。填充製程之後進行保壓製程、冷卻製程。 By performing position control in the final process, the final size and shape of the cavity space 34 becomes stable, and the size and shape of the molded product become stable. By advancing the compression member 36 in the final process, the inside of the cavity space 34 is advanced. The molding material 42 is filled to end the filling of the molding material 42. After the filling process, a holding process and a cooling process are performed.

壓縮行程結束之後,可以在保壓製程、冷卻製程繼續進行位置控制,以防止模穴空間34的大小發生變化。在該位置控制,禁止壓縮構件36移動。該位置控制亦可以進行至開模製程開始。 After the compression stroke is completed, the position control can be continued during the holding and cooling process to prevent the size of the cavity space 34 from changing. In this position control, movement of the compression member 36 is prohibited. This position control can also be performed until the mold opening process starts.

如第3圖所示,控制器70可以在最初製程和最後製程這兩方製程進行位置控制,在位於這些製程之間的製程進行壓力控制。另外,第3圖中,在壓縮行程依序進行位置控制S11、壓力控制S12及位置控制S13,但切換次數和順序並沒有特別限定。例如,控制器70可以不將壓力控制S12切換成位置控制S13而以壓力控制S12結束。亦即,亦可以僅依序進行位置控制S11及壓力控制S12。此外,控制器70亦可以不進行位置控制S11而先進行壓力控制S12。亦即,亦可以僅依序進行壓力控制S12及位置控制S13。壓縮行程只要由2個以上的製程構成即可,例如亦可以由4個以上的製程構成。 As shown in FIG. 3, the controller 70 can perform position control in both the initial process and the final process, and perform pressure control in processes located between these processes. In addition, in FIG. 3, the position control S11, the pressure control S12, and the position control S13 are sequentially performed in the compression stroke, but the number and order of switching are not particularly limited. For example, the controller 70 may end the pressure control S12 without switching the pressure control S12 to the position control S13. That is, only the position control S11 and the pressure control S12 may be performed sequentially. In addition, the controller 70 may perform the pressure control S12 without performing the position control S11. That is, only the pressure control S12 and the position control S13 may be performed sequentially. The compression stroke may be constituted by two or more processes, for example, it may be constituted by four or more processes.

以上,對射出成形機的實施形態等進行了說明,但本發明並不限定於上述實施形態等,在申請專利範圍所記載的本發明的主旨的範圍內,可以進行各種變形及改進。 The embodiments and the like of the injection molding machine have been described above, but the present invention is not limited to the above-mentioned embodiments and the like, and various modifications and improvements can be made within the scope of the gist of the present invention described in the patent application scope.

例如,上述實施形態中,壓縮構件36既用於(1)壓縮模具裝置30內的成形材料,亦用於(2)從模具裝置30頂出成形品,但亦可以僅用於(1)壓縮,而不用於(2)頂出。此時,有別於壓縮構件36而將頂出用構件另 外配設於模具裝置30內。 For example, in the above embodiment, the compression member 36 is used for (1) compressing the molding material in the mold device 30 and (2) ejecting the molded product from the mold device 30, but it may be used only for (1) compression , Not for (2) ejection. At this time, the ejection member is different from the compression member 36. The outside is disposed inside the mold device 30.

頂出用構件與壓縮構件36個別設置時,頂出裝置60可以發揮分別獨立驅動頂出用構件及壓縮構件36的驅動裝置的功能,亦可以發揮僅驅動頂出用構件的驅動裝置的功能。在後者的情況下,另外設置驅動壓縮構件36的驅動裝置。例如使用作為中間裝置50的油壓缸,當作驅動壓縮構件36的驅動裝置。 When the ejection member and the compression member 36 are separately provided, the ejection device 60 may function as a driving device that independently drives the ejection member and the compression member 36, or may function as a driving device that drives only the ejection member. In the latter case, a driving device for driving the compression member 36 is separately provided. For example, a hydraulic cylinder serving as the intermediate device 50 is used as a driving device for driving the compression member 36.

上述實施形態的壓縮構件36配設於可動模33側,但亦可以配設於固定模32側。此時,中間裝置50可以配設於固定模32與固定壓板12之間。另外,壓縮構件36亦可以分別配設於可動模33及固定模32這兩側。 The compression member 36 of the above embodiment is disposed on the movable mold 33 side, but may be disposed on the fixed mold 32 side. At this time, the intermediate device 50 may be disposed between the fixed mold 32 and the fixed platen 12. In addition, the compression members 36 may be respectively disposed on both sides of the movable mold 33 and the fixed mold 32.

上述實施形態的壓縮行程的開始時刻為填充成形材料42的中途,但並沒有特別限定,例如可以在開始填充之前進行,亦可以在與開始填充的同時進行。 The start time of the compression stroke of the above embodiment is halfway through the filling molding material 42, but it is not particularly limited. For example, it may be performed before the filling is started, or may be performed at the same time as the filling is started.

上述實施形態的壓縮行程的結束時刻大致與結束成形材料42的填充的時刻相同,但並沒有特別限定,例如可以在填充結束之後,亦可以在填充結束之前。 The end time of the compression stroke of the above embodiment is substantially the same as the time at which the filling of the molding material 42 is completed, but it is not particularly limited. For example, it may be after the end of filling or before the end of filling.

上述實施形態的合模裝置10,作為驅動源雖具有合模馬達21,但亦可以具有油壓缸以代替合模馬達21。此外,合模裝置10雖具有模開閉用的線性馬達,亦可以具有合模用的電磁鐵。 Although the mold clamping device 10 of the above embodiment includes the mold clamping motor 21 as a drive source, it may include a hydraulic cylinder instead of the mold clamping motor 21. In addition, although the mold clamping device 10 includes a linear motor for mold opening and closing, it may include an electromagnet for mold clamping.

Claims (5)

一種射出成形機,係具有:壓縮構件的驅動裝置,該壓縮構件是藉由在模具裝置內移動而將成形材料壓縮;及控制器,控制前述驅動裝置,前述控制器在壓縮前述模具裝置內的成形材料的壓縮行程中途,將前述驅動裝置的控制在位置控制和壓力控制之間進行切換。An injection molding machine includes: a driving device for compressing a member that compresses a molding material by moving in a mold device; and a controller that controls the driving device that compresses the mold device. During the compression stroke of the molding material, the control of the driving device is switched between position control and pressure control. 如申請專利範圍第1項所述之射出成形機,其中,前述壓縮行程,藉由前述位置控制與前述壓力控制之間的切換而被分割為複數個製程,前述控制器,在前述複數個製程中的最初製程及最後製程的至少一方進行前述位置控制。The injection molding machine described in the first item of the patent application scope, wherein the compression stroke is divided into a plurality of processes by switching between the position control and the pressure control, and the controller is configured in the plurality of processes. At least one of the first process and the last process in the process performs the aforementioned position control. 如申請專利範圍第2項所述之射出成形機,其中,前述控制器,在前述最初製程及前述最後製程這兩方製程進行前述位置控制,在位於前述兩方製程之間的製程進行前述壓力控制。The injection molding machine according to item 2 of the scope of patent application, wherein the controller performs the position control in the two processes of the initial process and the last process, and performs the pressure in the process located between the two processes. control. 如申請專利範圍第1至3中任一項所述之射出成形機,其中,前述驅動裝置,係用於從前述模具裝置頂出成形品的頂出裝置。The injection molding machine according to any one of claims 1 to 3, wherein the driving device is an ejection device for ejecting a molded product from the mold device. 如申請專利範圍第4項所述之射出成形機,其中,前述壓縮構件用於從前述模具裝置頂出成形品。The injection molding machine according to item 4 of the patent application scope, wherein the compression member is used to eject a molded product from the mold device.
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