WO2023276881A1 - 射出成形機 - Google Patents
射出成形機 Download PDFInfo
- Publication number
- WO2023276881A1 WO2023276881A1 PCT/JP2022/025311 JP2022025311W WO2023276881A1 WO 2023276881 A1 WO2023276881 A1 WO 2023276881A1 JP 2022025311 W JP2022025311 W JP 2022025311W WO 2023276881 A1 WO2023276881 A1 WO 2023276881A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bed
- molding machine
- injection molding
- hydraulic pump
- hydraulic
- Prior art date
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 66
- 238000002347 injection Methods 0.000 claims abstract description 53
- 239000007924 injection Substances 0.000 claims abstract description 53
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 230000002265 prevention Effects 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 53
- 238000010438 heat treatment Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
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
- B29C45/1773—Means for adjusting or displacing the injection unit into different positions, e.g. for co-operating with different moulds
-
- 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
- B29C45/1761—Means for guiding movable mould supports or injection units on the machine base or frame; Machine bases or frames
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/82—Hydraulic or pneumatic circuits
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76655—Location of control
- B29C2945/76775—Fluids
- B29C2945/76785—Fluids hydraulic fluids
Definitions
- the present invention provides an injection molding device comprising an injection device movably provided on a bed, a mold clamping device provided on the bed, and a moving device for moving the injection device closer to and away from the mold clamping device. It is about the machine.
- each device is installed on the bed. That is, the injection device is movably provided on the bed, and the mold clamping device is provided on the bed.
- the injection device is equipped with a nozzle touch device or moving device, for example as described in US Pat.
- the moving device has a hydraulic cylinder, and when pressure oil is supplied to the hydraulic cylinder, the injection device moves. This allows the injection device to approach or separate from the mold clamping device.
- An injection molding machine is equipped with one or more control panels for driving each device.
- a control panel is located below the injection unit in the bed.
- the moving device includes a hydraulic pump that supplies pressure oil to the hydraulic pump, a motor that drives the hydraulic pump, and the like. Hydraulic pumps, etc., may cause failure if the control panel is contaminated by leakage of pressure oil, so it is necessary to consider the installation location. I don't like putting it on my bed. Therefore, hydraulic pumps and the like for the moving device are provided on the side of the bed. Since the hydraulic pump protrudes from the side of the bed, there is a problem of impairing the appearance.
- an object of the present disclosure is to provide an injection molding machine that does not impair aesthetic appearance.
- Means for solving the above problems are as follows. [1] bed and an injection device movably provided with respect to the bed; a mold clamping device provided on the bed; a moving device for moving the injection device, the moving device includes a hydraulic cylinder; a hydraulic pump that supplies hydraulic fluid to the hydraulic cylinder, The injection molding machine, wherein the hydraulic pump is provided within the bed. [2] The injection molding machine according to [1], wherein a motor for driving the hydraulic pump and a tank for storing hydraulic fluid for the hydraulic pump are also provided in the bed. [3] The injection molding machine according to [1] or [2], wherein the hydraulic cylinder is attached to the injection device.
- a first space in which a control panel and a transformer are installed is secured under the injection device in the bed, and the hydraulic pump is installed in the first space adjacent to the mold clamping device side of the first space.
- the injection molding machine according to any one of [1] to [3], which is provided in space 2.
- a motor for driving the hydraulic pump and a tank for storing hydraulic fluid for the hydraulic pump are also provided in the second space.
- an oil leakage prevention wall is provided between the first space and the second space.
- a hydraulic pipe connecting the hydraulic pump and the hydraulic cylinder includes a first curved section that is allowed to bend and a straight section that is connected to the first curved section and maintained straight. and a second curved section connected to the straight section and allowed to bend,
- FIG. 1 is a front view showing an injection molding machine according to an embodiment;
- FIG. 1 is a top view showing an injection molding machine according to an embodiment;
- FIG. 1 is a top view showing part of an injection molding machine according to an embodiment and a pressure oil supply unit that constitutes a moving device;
- FIG. It is a top view showing a part of injection molding machine concerning this embodiment.
- 1 is a top view showing part of an injection molding machine according to an embodiment and a pressure oil supply unit that constitutes a moving device;
- FIG. It is a top view which shows a part of conventional injection molding machine.
- An injection molding machine includes: bed and an injection device movably provided with respect to the bed; a mold clamping device provided on the bed; a moving device for moving the injection device, the moving device includes a hydraulic cylinder; a hydraulic pump that supplies hydraulic fluid to the hydraulic cylinder, The hydraulic pump is provided within the bed.
- a hydraulic cylinder and a hydraulic pump are used as the hydraulic cylinder and the hydraulic pump, respectively.
- an injection molding machine 1 includes a mold clamping device 2 placed on a bed B and an injection device 3 similarly provided on the bed B. It has The injection molding machine 1 is provided with a nozzle touch device, that is, a moving device 5, which will be described later in detail, and moves the injection device 3 closer to or away from the mold clamping device 2. As shown in FIG. In this embodiment, the mold clamping device 2 and the injection device 3 are driven by an electric servomotor or the like. That is, the injection molding machine 1 according to this embodiment is a so-called electric injection molding machine.
- the injection molding machine 1 is equipped with a controller 7 as shown in FIG.
- the controller 7 is not shown in FIG. 1 to avoid complicating the drawing.
- the controller 7 controls the mold clamping device 2, the injection device 3, and the like.
- the side on which the controller 7 is provided is called an operating side S1
- the opposite side is called a non-operating side S2.
- FIG. 1 is a front view of the injection molding machine 1 viewed from the operating side S1.
- An injection molding machine includes a mold clamping device provided on a bed.
- the mold clamping device 2 includes a fixed platen 10 fixed on the bed B, a mold clamping housing 11 that slides on the bed B, and a movable housing that slides on the bed B as well.
- a board 12 is provided.
- the stationary platen 10 and the mold clamping housing 11 are connected by a plurality of tie bars 14, 14, . . .
- the movable platen 12 is slidable between the fixed platen 10 and the mold clamping housing 11 .
- a mold clamping mechanism 16 consisting of a toggle mechanism is provided between the mold clamping housing 11 and the movable platen 12 .
- the mold clamping mechanism 16 may be composed of a direct pressure mold clamping cylinder.
- a fixed side mold 17 and a movable side mold 18 are provided on the fixed platen 10 and the movable platen 12, respectively.
- An injection molding machine includes an injection device movably provided with respect to a bed.
- the injection device 3 as shown in FIG.
- a hopper 25 and an injection nozzle 26 are provided in the heating cylinder 20 .
- the screw 21 is rotated and the resin material is supplied from the hopper 25, the resin material is melted in the heating cylinder 20 and weighed.
- the screw 21 is driven in the axial direction, molten resin is injected from the injection nozzle 26 .
- the injection device 3 is provided with respect to the bed B via a pair of linear guides 28, 28, as shown in FIG. That is, the injection device 3 is placed on the bed B so as to be movable. The injection device 3 is moved by the moving device 5 described below.
- An injection molding machine includes a moving device that moves an injection device.
- the displacement device comprises a hydraulic cylinder and a hydraulic pump that supplies hydraulic fluid to the hydraulic cylinder.
- a hydraulic cylinder is preferably attached to said injection device.
- the moving device 5 includes a pair of hydraulic cylinders 30 and 31, a pressure oil supply unit 33 for supplying pressure oil to them, and a pressure oil supply unit. 33 and a hydraulic pipe 35 connecting the hydraulic cylinders 30 and 31 .
- a pair of hydraulic cylinders 30 and 31 are provided parallel to the heating cylinder 20 and on both sides of the heating cylinder 20 .
- One end of these rods is fixed to the stationary platen 10 and the other end is fixed to the screw driving device 23 in the injection device 3 . Therefore, when pressure oil is supplied to the hydraulic cylinders 30 and 31 , the injection device 3 approaches the mold clamping device 2 and the injection nozzle 26 touches the stationary mold 17 . Alternatively, the injection device 3 is separated from the mold clamping device 2 .
- the hydraulic pump is provided inside the bed.
- the bed includes a motor for driving the hydraulic pump and a tank for storing the working fluid of the hydraulic pump, and the motor for driving the hydraulic pump and the tank for storing the working fluid for the hydraulic pump are also included in the bed. It is preferably provided inside.
- the pressure oil supply unit 33 includes a hydraulic pump 50, an electric motor 51 for driving the hydraulic pump 50, and a tank 53 for storing the pressure oil. ing.
- the pressure oil supply unit 33 also includes hydraulic equipment necessary for supplying pressure oil, such as solenoid valves, but these are not shown in the drawing.
- the pressure oil supply unit 33 is compact because the devices and hydraulic equipment necessary for supplying pressure oil are integrally connected.
- the hydraulic pump is preferably provided on the side of the mold clamping device in the bed. It is more preferable that a tank for storing the is also provided on the side of the mold clamping device in the bed.
- a first space is secured below the injection device in the bed, in which a control panel and a transformer are provided, and the hydraulic pump is located in the first space.
- a motor for driving the hydraulic pump and a tank for storing hydraulic fluid for the hydraulic pump are also provided in the second space.
- an oil leakage prevention wall is provided between the first space and the second space.
- the movement device 5 is characterized in that the pressure oil supply unit 33 is provided inside the bed B.
- the bed B as shown in FIG. 1, has a higher ceiling on the injection device 3 side and a lower ceiling on the mold clamping device 2 side.
- Control panels 37 and 38 for controlling each device are provided in the elevated bed B on the side of the injection device 3 .
- a transformer 39 is provided next to the control panels 37 and 38 as required. This is because when the injection molding machine 1 is used in a country or region where the voltage is different, the voltage is changed to a standard voltage such as 200V. Therefore, there is no room under the injection device 3 in the bed B, that is, the first space 41, and the pressure oil supply unit 33 cannot be arranged.
- the pressure oil supply unit 33 is arranged in the second space 42 adjacent to the first space 41 .
- the second space 42 is positioned on the side of the mold clamping device 2 in the bed B, more specifically, below the stationary platen 10 .
- the third space 43 between the fixed platen 10 and the movable platen 12 in the bed B may be provided by the user for a shooter for taking out the molded product, a temperature control device for the mold, and the like. must be secured to Therefore, the pressure oil supply unit 33 is provided in a narrow second space 42 sandwiched between the first and third spaces 41 and 43 .
- an oil leakage prevention wall 45 is provided between the first space 41 and the second space 42 to prevent equipment in the first space 41 from being contaminated with pressure oil. are protected from being stolen.
- a partition wall 47 is provided between the second space 42 and the third space 43 .
- the pressure oil supply unit 33 is arranged in the second space 42 in this manner, it is further provided on the non-operation side S2 side of the injection molding machine 1 . This is because the hydraulic pipe 35, which will be described next, is provided on the non-operation side S2 so that the hydraulic pipe 35 does not interfere with the user's operation.
- the hydraulic pump is fixed in the bed by a fixing means, and can be rotated horizontally when part of the fixing means is removed.
- the pressure oil supply unit 33 is fixed to the floor surface of the bed B by two fixing means, that is, fixing bolts 63, 63, as shown in FIG. Therefore, when one fixing bolt 63 is removed as will be described later, the pressure oil supply unit 33 can be turned around the remaining one fixing bolt 63 .
- An injection molding machine has hydraulic piping connecting a hydraulic pump and a hydraulic cylinder.
- a hydraulic pipe that connects the hydraulic pump and the hydraulic cylinder includes a first curved section that is allowed to bend, a straight section that is connected to the first curved section and maintained straight, and a second curved section connected to the straight section and allowed to be curved, wherein the first curved section is arranged on the side of the mold clamping device and the straight section is arranged on the side of the injection device near the mold clamping device.
- the first curved section is preferably arranged in the bed
- the second curved section is preferably arranged on the bed
- the straight section is preferably arranged on the bed.
- it is preferable that the straight section is covered with a cover.
- the hydraulic piping 35 consists of a pair of pipelines provided in parallel. When pressure oil is supplied from one pipeline, pressure oil is returned from the other pipeline, and when pressure oil is supplied from the other pipeline Pressure oil is returned from one pipeline.
- a hydraulic pipe 35 is provided on the side opposite to the operation side S2 as shown in FIG. 2 as a whole, and is divided into three sections. Specifically, the hydraulic pipe 35 is connected to a first curved section 55 connected to the pressure oil supply unit 33 and to the first curved section 55, as shown in FIGS. and a second curved section 57 connecting the straight section 56 and the pair of hydraulic cylinders 30,31.
- the hydraulic pipes 35 of the first curved section 55 and the second curved section 57 are made of flexible pipes, that is, flexible pipelines, and are allowed to change in curvature. In other words, it can be freely bent.
- a first curved section 55 is located within the bed B and is connected to the hydraulic oil supply unit 33 as previously described. And the second curved section 57 is arranged on the bed B. As shown in FIG.
- the second curved section 57 exits from the straight section 56 disposed on the non-operation side S2, protrudes greatly on the bed B toward the operation side S1, and curves. It is connected to connector portions 65, 65 provided on the operation side S2.
- the connector portions 65 and 65 are connected to the pair of hydraulic cylinders 30 and 31 . As will be described later, when the injection device 3 is moved, this curved portion that protrudes greatly is bent.
- the straight section 56 is a straight pipe.
- the straight section 56 can be arranged on the bed B and is provided on the bed B in the embodiment shown in FIG.
- the straight section 56 is preferably made of a flexible pipe.
- Straight section 56 is fixed on bed B by fixtures 59, 59 as shown in FIG. During maintenance such as replacement of the tie bars 14, 14, the cover 60 is removed and the fixtures 59, 59 are removed. If the straight section 56 is made of a flexible pipe, it can be temporarily curved and retracted sideways from the bed B, so maintenance is not hindered.
- the straight section 56 can also be arranged inside the bed B.
- the straight section 56 does not interfere with maintenance such as replacement of the tie bars 14 , 14 . It can therefore also consist of a rigid pipe, for example a metal pipe.
- a protective oil leakage cover it is preferable to provide a protective oil leakage cover so as not to contaminate the control panels 37, 38 and the transformer 39 when pressure oil leaks. .
- FIG. 2 shows the state when the injection device 3 is separated from the mold clamping device 2, and FIG. As shown in FIGS. 2 and 4, the hydraulic line 35 is free to bend in the second bend section 57 to support the movement of the injection device 3 .
- the partition wall 47 (see FIG. 3) is removed. Then, one of the fixing bolts 63, 63 is removed. Then, the pressure oil supply unit 33 can be turned horizontally. FIG. 5 shows how it is rotated. When pivoting the pressure oil supply unit 33, the first curved section 55 extends to support the pivoting. When the pressure oil supply unit 33 is rotated, the oil supply port 67 for replacing pressure oil is exposed to the third space 43 side. Replace pressure oil. The pressure oil supply unit 33 is rotated to return to its original position and fixed with the fixing bolt 63 . Install the partition wall 47 (see FIG. 3). Complete maintenance.
- FIG. 80 A portion of a conventional injection molding machine 80 is shown in FIG.
- an injection device 81 is moved by a pair of hydraulic cylinders 83 and 84 to approach or separate from a stationary platen 86.
- a pressure oil supply unit 88 that supplies pressure oil to the hydraulic cylinders 83 and 84 is arranged on the side of the bed BD. Therefore, the aesthetic appearance was spoiled. Furthermore, since the pressure oil supply unit 88 protrudes to the side of the bed BD, there is a risk that the user may stumble or bump into it.
- the pressurized oil supply unit 33 is provided in the bed B as described above. No danger to users.
- the movement device 5 (see FIGS. 1 and 2) is provided with hydraulic cylinders 30 and 31 and is described as supplying pressurized oil.
- it may be driven by another type of hydraulic fluid other than pressure oil. That is, it may be composed of a hydraulic cylinder and a hydraulic pump or the like for supplying hydraulic fluid to the hydraulic cylinder.
- the hydraulic pump is housed in the bed, and the appearance is not spoiled.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
〔1〕
ベッドと、
前記ベッドに対して移動可能に設けられている射出装置と、
前記ベッド上に設けられている型締装置と、
前記射出装置を移動させる移動装置と、を備え、
前記移動装置は液圧シリンダと、
前記液圧シリンダに作動液を供給する液圧ポンプと、を備え、
前記液圧ポンプは、前記ベッド内に設けられている、射出成形機。
〔2〕
前記液圧ポンプを駆動するためのモータと、前記液圧ポンプの作動液を貯留するタンクも前記ベッド内に設けられている、〔1〕に記載の射出成形機。
〔3〕
前記液圧シリンダは前記射出装置に取り付けられている、〔1〕または〔2〕に記載の射出成形機。
〔4〕
前記液圧ポンプは、前記ベッド内の前記型締装置側に設けられている、〔1〕~〔3〕のいずれか1項に記載の射出成形機。
〔5〕
前記液圧ポンプを駆動するためのモータと、前記液圧ポンプの作動液を貯留するタンクも前記ベッド内の前記型締装置側に設けられている、〔4〕に記載の射出成形機。
〔6〕
前記液圧ポンプは、前記ベッド内に固定手段によって固定されており、前記固定手段の一部を外すと水平に旋回されるようになっている、〔1〕~〔5〕のいずれか1項に記載の射出成形機。
〔7〕
前記ベッド内の前記射出装置の下には制御盤と変圧器とが設けられる第1のスペースが確保されており、前記液圧ポンプは前記第1のスペースの前記型締装置側に隣接する第2のスペースに設けられている、〔1〕~〔3〕のいずれか1項に記載の射出成形機。
〔8〕
前記液圧ポンプを駆動するためのモータと、前記液圧ポンプの作動液を貯留するタンクも前記第2のスペースに設けられている、〔7〕に記載の射出成形機。
〔9〕
前記第1のスペースと前記第2のスペースの間には油漏れ防止壁が設けられている、〔7〕または〔8〕に記載の射出成形機。
〔10〕
前記液圧ポンプと前記液圧シリンダとを接続している液圧配管は、湾曲が許容される第1の湾曲区間と、該第1の湾曲区間に接続されて直線状に維持される直線区間と、該直線区間に接続されて湾曲が許容される第2の湾曲区間と、を備え、
前記第1の湾曲区間は前記型締装置側に、前記直線区間は前記射出装置側の前記型締装置寄りに配置されている、〔3〕~〔5〕のいずれか1項に記載の射出成形機。
〔11〕
前記第1の湾曲区間は前記ベッド内に、前記第2の湾曲区間は前記ベッド上に配置されている、〔10〕に記載の射出成形機。
〔12〕
前記直線区間は前記ベッド上に配置されている、〔10〕または〔11〕に記載の射出成形機。
〔13〕
前記直線区間はカバーで被覆されている、〔12〕に記載の射出成形機。
<射出成形機>
本発明の実施形態に係る射出成形機は、
ベッドと、
前記ベッドに対して移動可能に設けられている射出装置と、
前記ベッド上に設けられている型締装置と、
前記射出装置を移動させる移動装置と、を備え、
前記移動装置は液圧シリンダと、
前記液圧シリンダに作動液を供給する液圧ポンプと、を備え、
前記液圧ポンプは、前記ベッド内に設けられている。
以下の図を用いた説明においては、液圧シリンダ、及び液圧ポンプとして、それぞれ油圧シリンダ、及び油圧ポンプを用いている。
本発明の実施形態に係る射出成形機は、ベッド上に設けられている型締装置を備える。
型締装置2は、図1に示されているように、ベッドB上に固定されている固定盤10と、ベッドB上をスライドする型締ハウジング11と、ベッドB上を同様にスライドする可動盤12とを備えている。固定盤10と型締ハウジング11は複数本、例えば4本のタイバー14、14、…によって連結されている。可動盤12は、固定盤10と型締ハウジング11の間でスライド自在になっている。型締ハウジング11と可動盤12の間にはトグル機構からなる型締機構16が設けられている。なお型締機構16は直圧式の型締シリンダから構成してもよい。固定盤10と可動盤12にはそれぞれ固定側金型17と可動側金型18とが設けられ、図示されない電動サーボモータにより型締機構16を駆動すると型開閉するようになっている。
本発明の実施形態に係る射出成形機は、ベッドに対して移動可能に設けられた射出装置を備える。
射出装置3は、図1に示されているように、加熱シリンダ20と、この加熱シリンダ20に入れられているスクリュ21と、スクリュ21を駆動するスクリュ駆動装置23とから構成されている。加熱シリンダ20にはホッパ25と射出ノズル26とが設けられている。スクリュ21を回転してホッパ25から樹脂材料を供給すると樹脂材料は加熱シリンダ20内で溶融され計量される。スクリュ21を軸方向に駆動すると溶融された樹脂が射出ノズル26から射出される。
本発明の実施形態に係る射出成形機は、射出装置を移動させる移動装置を備える。移動装置は液圧シリンダと、液圧シリンダに作動液を供給する液圧ポンプとを備える。
本発明の実施形態において、液圧シリンダは前記射出装置に取り付けられていることが好ましい。
本発明の実施形態に係る射出成形機において、液圧ポンプはベッド内に設けられている。好ましくは、液圧ポンプを駆動するためのモータと、液圧ポンプの作動液を貯留するタンクを備え、液圧ポンプを駆動するためのモータと、液圧ポンプの作動液を貯留するタンクもベッド内に設けられていることが好ましい。
また、第1のスペースと第2のスペースの間には油漏れ防止壁が設けられていることが好ましい。
本発明の実施形態に係る射出成形機は、液圧ポンプと液圧シリンダとを接続している液圧配管を有する。液圧ポンプと液圧シリンダとを接続している液圧配管は、湾曲が許容される第1の湾曲区間と、該第1の湾曲区間に接続されて直線状に維持される直線区間と、該直線区間に接続されて湾曲が許容される第2の湾曲区間と、を備え、第1の湾曲区間は型締装置側に、直線区間は射出装置側の型締装置寄りに配置されていることが好ましい。
また、第1の湾曲区間はベッド内に、第2の湾曲区間はベッド上に配置されていることが好ましく、直線区間はベッド上に配置されていることが好ましい。
そして、直線区間はカバーで被覆されていることが好ましい。
図6には従来の射出成形機80の一部が示されている。射出成形機80は射出装置81が、一対の油圧シリンダ83、84によって移動して固定盤86に接近したり、離間するようになっている。従来の射出成形機80において、油圧シリンダ83、84に圧油を供給する圧油供給ユニット88は、ベッドBDの側方に配置されている。したがって、美観を損なっていた。さらには圧油供給ユニット88がベッドBDの側方にせり出しているので、ユーザがつまずいたり、ぶつかったりする危険があった。これに対して、本実施の形態に係る射出成形機1(図1、2参照)は前記したように圧油供給ユニット33がベッドB内に設けられているので、美観を損なうこともないし、ユーザに対する危険もない。
本実施の形態に係る射出成形機1は色々な変形が可能である。例えば本実施の形態において、移動装置5(図1、2参照)は油圧シリンダ30、31を備え、圧油を供給するように説明した。しかしながら、圧油以外の他の種類の作動液によって駆動されるようにしてもよい。つまり液圧シリンダと、この液圧シリンダに作動液を供給する液圧ポンプ等、から構成するようにしてもよい。
本出願は、2021年6月29日出願の日本特許出願(特願2021-107202)に基づくものであり、その内容はここに参照として取り込まれる。
3 射出装置 5 移動装置
7 コントローラ 10 固定盤
11 型締ハウジング 12 可動盤
14 タイバー 16 型締機構
17 固定側金型 18 可動側金型
20 加熱シリンダ 21 スクリュ
23 スクリュ駆動装置 25 ホッパ
26 射出ノズル 28 リニアガイド
30 油圧シリンダ 31 油圧シリンダ
33 圧油供給ユニット 35 油圧配管
37 制御盤 38 制御盤
39 変圧器 41 第1のスペース
42 第2のスペース 43 第3のスペース
45 油漏れ防止壁 47 仕切壁
50 油圧ポンプ 51 電動モータ
53 タンク 55 第1の湾曲区間
56 直線区間 57 第2の湾曲区間
59 固定具 60 カバー
63 固定用ボルト 65 コネクタ部
67 給油口
S1 操作側
S2 反操作側
B ベッド
80 射出成形機 81 射出装置
83 油圧シリンダ 84 油圧シリンダ
86 固定盤 88 圧油供給ユニット
BD ベッド
Claims (13)
- ベッドと、
前記ベッドに対して移動可能に設けられている射出装置と、
前記ベッド上に設けられている型締装置と、
前記射出装置を移動させる移動装置と、を備え、
前記移動装置は液圧シリンダと、
前記液圧シリンダに作動液を供給する液圧ポンプと、を備え、
前記液圧ポンプは、前記ベッド内に設けられている、射出成形機。 - 前記液圧ポンプを駆動するためのモータと、前記液圧ポンプの作動液を貯留するタンクも前記ベッド内に設けられている、請求項1に記載の射出成形機。
- 前記液圧シリンダは前記射出装置に取り付けられている、請求項1または2に記載の射出成形機。
- 前記液圧ポンプは、前記ベッド内の前記型締装置側に設けられている、請求項1~3のいずれか1項に記載の射出成形機。
- 前記液圧ポンプを駆動するためのモータと、前記液圧ポンプの作動液を貯留するタンクも前記ベッド内の前記型締装置側に設けられている、請求項4に記載の射出成形機。
- 前記液圧ポンプは、前記ベッド内に固定手段によって固定されており、前記固定手段の一部を外すと水平に旋回されるようになっている、請求項1~5のいずれか1項に記載の射出成形機。
- 前記ベッド内の前記射出装置の下には制御盤と変圧器とが設けられる第1のスペースが確保されており、前記液圧ポンプは前記第1のスペースの前記型締装置側に隣接する第2のスペースに設けられている、請求項1~3のいずれか1項に記載の射出成形機。
- 前記液圧ポンプを駆動するためのモータと、前記液圧ポンプの作動液を貯留するタンクも前記第2のスペースに設けられている、請求項7に記載の射出成形機。
- 前記第1のスペースと前記第2のスペースの間には油漏れ防止壁が設けられている、請求項7または8に記載の射出成形機。
- 前記液圧ポンプと前記液圧シリンダとを接続している液圧配管は、湾曲が許容される第1の湾曲区間と、該第1の湾曲区間に接続されて直線状に維持される直線区間と、該直線区間に接続されて湾曲が許容される第2の湾曲区間と、を備え、
前記第1の湾曲区間は前記型締装置側に、前記直線区間は前記射出装置側の前記型締装置寄りに配置されている、請求項3~5のいずれか1項に記載の射出成形機。 - 前記第1の湾曲区間は前記ベッド内に、前記第2の湾曲区間は前記ベッド上に配置されている、請求項10に記載の射出成形機。
- 前記直線区間は前記ベッド上に配置されている、請求項10または11に記載の射出成形機。
- 前記直線区間はカバーで被覆されている、請求項12に記載の射出成形機。
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JP2003291174A (ja) * | 2002-04-02 | 2003-10-14 | Japan Steel Works Ltd:The | 電動射出成形機 |
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