WO1997007971A1 - Spritzgiesseinheit für eine kunststoff-spritzgiessmaschine - Google Patents
Spritzgiesseinheit für eine kunststoff-spritzgiessmaschine Download PDFInfo
- Publication number
- WO1997007971A1 WO1997007971A1 PCT/DE1996/001532 DE9601532W WO9707971A1 WO 1997007971 A1 WO1997007971 A1 WO 1997007971A1 DE 9601532 W DE9601532 W DE 9601532W WO 9707971 A1 WO9707971 A1 WO 9707971A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- injection
- injection molding
- molding unit
- guide elements
- bridge
- 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.)
- Ceased
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
- B29C45/03—Injection moulding apparatus
- B29C45/07—Injection moulding apparatus using movable injection units
-
- 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
- B29C45/46—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
- B29C2045/5084—Drive means therefor screws axially driven by roller elements
-
- 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
- B29C45/72—Heating or cooling
- B29C2045/7271—Cooling of drive motors
Definitions
- the invention relates to an injection molding unit for a plastic injection molding machine for processing plastifiable compositions such as plastics, powdery and ceramic compositions according to the preamble of claim 1.
- Such an injection molding unit is known from EP-A 576 925 in which a carrier block is axially displaceably mounted relative to a stationary mold carrier.
- the connection between the carrier block and the stationary mold carrier takes place via nested electromechanical spindle drives, which comprise a drive unit designed as a hollow shaft motor for applying the nozzle to the injection mold and an injection unit which generates the axial movement of the screw conveyor within the plasticizing cylinder during injection.
- a rotary motor for rotating the screw conveyor is also provided on an injection bridge.
- guide rails are provided on the machine base, on which at least the carrier block is guided. No other guide elements are provided.
- the serial arrangement of the drive unit and injection unit leads to a large overall length of the injection molding unit, since the movement paths of the two units line up. If a unit is defective, at least one 'spar 1 with both units must be dismantled, so that unnecessary additional work and additional costs result.
- the arrangement of the units in the area of the plasticizing cylinder makes access to the plasticizing cylinder itself difficult.
- the present The invention has for its object to develop an injection molding unit of the type mentioned in such a way that improved guidance of the injection molding unit results in a favorable manner.
- the linear guide elements are also arranged here symmetrically to the injection axis, so that there is an axisymmetric guidance of the parts of the injection molding unit that are movable relative to one another.
- the spars stabilize the entire injection molding unit at the same time, so that they can also be moved or pivoted as a structural unit, for example for injection, into the parting plane.
- the arrangement on different levels also creates the structural conditions for the use of standard motors, the maximum movement paths of the individual units being able to be nested with one another in a space-saving manner.
- separate guidance members are provided, which are arranged symmetrically to the spraying axis in order to achieve a corresponding precision. This resolution of the guide function, nozzle travel function and injection function on three different assemblies, all of which are symmetrical to the spray axis, results in improved guidance as well as easy access to the individual assemblies, each of which is a structural unit.
- FIG. 1 shows a side view of an injection molding unit arranged on the stationary mold carrier
- FIG. 2 shows a top view of the injection molding unit according to FIG
- Fig. 3 shows a section along line 3-3 of Fig. 1
- Fig. 4 shows a section along line 4-4 of Fig. 1
- Fig. 5 shows a section along line 5-5 of Fig. 1
- Fig 6 shows a section along line 6-6 of FIG. 3.
- the injection molding unit is used for dosing and injecting plasticized material such as Plastics, powdery masses and ceramic masses in a mold cavity 80 of a mold M.
- the mold M lies at least in part against a stationary mold carrier 35, a nozzle D coming into contact with this mold M in the spray axis s-s during injection.
- the injection molding unit has a plasticizing unit 17, in which a plasticizing cylinder 36 is provided, in which a conveying means 72 is arranged.
- the conveyor 72 is a screw conveyor, but can also be a conveyor piston.
- the plasticizing unit 17 itself is detachably received on the carrier block 10. For this purpose, it penetrates the support block and can be fixed on the back of the support block by means of a nut 34.
- Another component of the injection molding unit is an injection bridge 25, on which the conveyor 72 is mounted. When the injection bridge 25 moves toward and away from the support block 10, this results in a relative movement of the conveying means 72 with respect to the plasticizing unit 17, as a result of which the plasticized material is injected into the mold cavity 80.
- the movement takes place via several electromechanical movement units.
- a plurality of electromechanical drive units A arranged symmetrically to the injection axis ss are provided.
- a plurality of electromechanical injection units E arranged symmetrically to the spray axis ss are provided.
- the injection bridge and carrier block can be moved along linear guide elements 83.
- the linear guide elements are spars on which the carrier block 10 is guided via slide bearings 33a and the injection bridge 25 via slide bearings 33b.
- As a further guide strips 62 are provided, on which at least the support block 10 is guided via guide elements 79.
- the linear guide elements 83 are arranged symmetrically to the spray axis ss and penetrate the carrier block 10 and the injection bridge 25.
- the drive units A, the injection units E and the linear guide elements 83 are in different planes, all of which contain the spray axis ss . While the linear guide elements 83 lie in a horizontal plane h-h, the drive units A and the injection units E are in a first and second plane e-e and f-f inclined relative to the horizontal.
- each drive unit A and each injection unit E has its own drive motor 73 or injection motor 51, so that each unit together with its motor forms a structural unit which can then be fixed on the support block.
- each structural unit can be tested by the manufacturer independently of the remaining injection molding unit and, after a previous functional test, can only be fed to the injection molding unit.
- the injection unit E is an electromechanical spindle drive with a spindle 18 which is driven by the drive motor 51, the drive motor in the carrier block 10 is stored.
- the force of the drive motor can be transmitted via a reduction gear designed as a planetary gear set 51a to a region 18a of reduced diameter, which is mounted on bearings 23 on a molded part 10a of the carrier block 10.
- a nut 11 is fixed in a rotationally fixed manner on the injection bridge via fastening means 11a.
- a reversal of the arrangement of spindles and nuts or an arrangement of the injection motor 51 on the injection bridge is possible in principle, but would have the disadvantage that larger masses have to be moved.
- the function of the spindle and nut can be exchanged, for example by designing the 'spindle' as a long tubular element with an inner profile, into which - possibly with the interposition of rolling and rolling elements - a short spindle with an external profile immersed as a 'mother'. This provides additional protection for the drive against external influences.
- the linear guide elements 83 are detachably attached to the stationary mold carrier 35 in a known manner. They can also be held there in a displaceable carrier, so that the injection molding unit can be displaced laterally or upwards for a linear sprue.
- the linear guide elements 83 also extend over the entire length of the injection molding unit, wherein they statically determine the maximum overall length of the injection molding unit. 1, at the end of the linear guide elements 83, which faces away from the stationary mold carrier 35, there is a support plate 82 which serves as an abutment for the drive units A.
- the drive motor 73 is a hollow shaft motor which drives a spindle nut 78.
- the associated spindle 31 is rotatably mounted in approaches lOd of the carrier block 10.
- a cavity 73b is provided in the drive motor 73.
- Intermediate pieces 13 can be provided between the support plate 82 and the drive motor 73. By means of these intermediate pieces 13, the distance d between the support plate 82 and 73 can be changed, which can be used to achieve a changed length / diameter ratio in the region of the conveyor 72, e.g. longer plasticizing units 17 are used.
- the forces of the drive motor 73 can also be transmitted here via an integrated planetary gear in a form not shown in the drawing. It is also possible to replace the drive motors 73 assigned to the two drive units A by a single motor, which then drives the two spindle drives via belt drives or gears. In this case, even the drive motor 73 could be identical to the rotary motor 52 or the injection motor 51.
- the linear guide elements 83 are supported on strips 62 in the front area via support elements 27.
- the support elements are firmly connected both to the linear guide elements and to the strips 62.
- the strips 62 are stiffened at the level of the support elements by means of a cross strut 84, a frame being connected to the support element 82 in the rear area according to FIG. 3 is created.
- the linear guide elements 83 are also fastened to the support plate 82, this results in a three-dimensional stiffening frame, which is particularly advantageous when the injection molding unit together with its support can be moved. Such a movement is required, for example, to inject the injection molding unit, for example by pivoting it into the To make the parting plane accessible, or to maintain the injection molding unit in a depot.
- a rotary motor 52 To rotate the screw conveyor, a rotary motor 52 is provided, which transmits its force to the screw conveyor 72 via a gear 26, preferably designed as a planetary gear.
- the rotary motor 52 is received in a receptacle 25d of a molding 25c of the injection bridge 25. Since the forces which are necessary for the injection movement by means of the injection motor 51 are roughly twice as large as the forces which are required for the rotation of the screw conveyor by the rotary motor 52, the rotary motor can be of a structural design structurally identical to one of the two injection motors 51.
- the associated gears 51a, 26 preferably as identical planetary gears, so that basically a standard motor can be used on the various units.
- the dissolving of the units combined with one another here also has the advantage that there is sufficient space to design the rotary motor 52 and the injection motor 51 as built-in motors.
- the injection motor 51 has ribs 51e on its outer wall, the outer diameter of which corresponds approximately to the inner diameter of the receptacle 10e of the carrier block.
- a cooling channel 51d is formed between the carrier block 10 and the injection motor 51, through which any cooling medium can flow.
- the cooling duct 51d is supplied via the connections 51b, 51c.
- the spiral arrangement of the ribs 51e results in a spiral cooling channel.
- the entire cooling channel is sealed on both sides by sealing rings 55, 56 to the outside, so that the cooling channel is formed by simply inserting the injection motor 51 into the receptacle 10e.
- the bearings 23 then only have to be supplied from the other side and the injection motor is then fixed to the injection bridge by means of the cover 10b, which in turn is attached by the fastening means 10c.
- the stop 63 serves as a travel limitation.
- the rotary motor 52 can also be designed as an identical built-in motor.
- the rotary motor 52 has ribs 52e, the outer diameter of which corresponds approximately to the inner diameter of the receptacle 25d of the injection bridge. Cooling medium is fed to the cooling duct 52d via the connections 52b, 52c.
- simply inserting the rotary motor 52 into the receptacle 25d results in the spiral cooling channel 52d in connection with the sealing rings 57, 58.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP96932443A EP0855953A2 (de) | 1995-08-25 | 1996-08-13 | Spritzgiesseinheit für eine kunststoff-spritzgiessmaschine |
| JP9509687A JPH11511083A (ja) | 1995-08-25 | 1996-08-13 | 合成樹脂射出成形機の射出成形ユニット |
| US09/029,406 US5968563A (en) | 1995-08-25 | 1996-08-13 | Injection-moulding unit for a machine for the injection moulding of plastics |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19531329.1 | 1995-08-25 | ||
| DE1995131329 DE19531329C2 (de) | 1995-08-25 | 1995-08-25 | Spritzgießeinheit für eine Spritzgießmaschine |
| DE19542453A DE19542453C2 (de) | 1995-11-14 | 1995-11-14 | Vorrichtung zur Umwandlung einer Drehbewegung in eine Axialbewegung |
| DE19542453.0 | 1995-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997007971A1 true WO1997007971A1 (de) | 1997-03-06 |
Family
ID=26018001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1996/001532 Ceased WO1997007971A1 (de) | 1995-08-25 | 1996-08-13 | Spritzgiesseinheit für eine kunststoff-spritzgiessmaschine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5968563A (de) |
| EP (1) | EP0855953A2 (de) |
| JP (1) | JPH11511083A (de) |
| CA (1) | CA2228755A1 (de) |
| WO (1) | WO1997007971A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3608109B2 (ja) * | 2000-11-29 | 2005-01-05 | 日精樹脂工業株式会社 | 電動式射出機構 |
| JP4645364B2 (ja) | 2005-08-25 | 2011-03-09 | トヨタ自動車株式会社 | 回転直動変換機構 |
| DE102011082540A1 (de) | 2011-09-12 | 2013-03-14 | Stabilus Gmbh | Antriebseinrichtung |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH577376A5 (en) * | 1974-11-26 | 1976-07-15 | Netstal Ag Maschf Giesserei | Plastics injection moulding machine - having hydraulically operated plasticising injection screw driving shaft, pistons-cylinders and guide beams |
| EP0247208A1 (de) * | 1985-11-30 | 1987-12-02 | Fanuc Ltd. | Antriebsvorrichtung für spritzgiessmaschine |
| EP0316561A1 (de) * | 1987-10-20 | 1989-05-24 | Karl Hehl | Kunststoff-Spritzgiesseinheit |
| EP0427866A1 (de) * | 1989-05-24 | 1991-05-22 | Fanuc Ltd. | Spritzgiessvorrichtung vom typ mit zwei platten |
| JPH04193515A (ja) * | 1990-11-28 | 1992-07-13 | Nissei Plastics Ind Co | 電動式竪型射出成形機 |
| EP0576925A1 (de) * | 1992-06-23 | 1994-01-05 | Battenfeld Kunststoffmaschinen Ges.m.b.H. | Spritzaggregat für Spritzgiessmaschinen |
| EP0581401A1 (de) * | 1992-07-17 | 1994-02-02 | MANNESMANN Aktiengesellschaft | Spritzgiessmaschine |
| EP0627289A1 (de) * | 1993-05-29 | 1994-12-07 | Karl Hehl | Spritzgiesseinheit für eine Kunststoff-Spritzgiessmaschine |
| DE4334134A1 (de) * | 1993-10-07 | 1995-04-13 | Battenfeld Kunststoffmasch | Spritzgießmaschine |
| DE4344335A1 (de) * | 1993-12-23 | 1995-06-29 | Krauss Maffei Ag | Einspritzaggregat für eine Spritzgießmaschine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE50843C (de) * | O. ElSELE jn Karlsruhe, Baden, Schützenstr. 82. Vom 6. J(jli 1889 ab | Thürschlofs | ||
| US2966070A (en) * | 1955-12-02 | 1960-12-27 | Anderson Co | Motion conversion unit |
| DE1043743B (de) * | 1956-03-06 | 1958-11-13 | Carl Bruno Strandgren | Differentialrollenschraubentrieb |
| CH410542A (de) * | 1962-07-14 | 1966-03-31 | Bruno Strandgren Carl | Rollschraube |
| US4802558A (en) * | 1987-10-01 | 1989-02-07 | The Olofsson Corporation | Apparatus providing environmental and mechanical protection for ball screw drives |
| FR2647194B1 (fr) * | 1989-05-22 | 1992-12-04 | Guerin Sa Pierre | Surgelateur a plaques |
| DE4115758C2 (de) * | 1991-05-15 | 1999-06-24 | Schaeffler Waelzlager Ohg | Wälzschraubtrieb |
| US5370012A (en) * | 1993-03-08 | 1994-12-06 | Stanley; Richard B. | Linear actuation roller bearing nut |
| DE4324838A1 (de) * | 1993-07-23 | 1995-01-26 | Schaeffler Waelzlager Kg | Wälzringgewindetrieb |
| DE4411651C1 (de) * | 1994-04-02 | 1995-04-27 | Karl Hehl | Vorrichtung zur drehsicheren Festlegung eines Kugelrollspindelmechanismus |
-
1996
- 1996-08-13 WO PCT/DE1996/001532 patent/WO1997007971A1/de not_active Ceased
- 1996-08-13 US US09/029,406 patent/US5968563A/en not_active Expired - Fee Related
- 1996-08-13 JP JP9509687A patent/JPH11511083A/ja not_active Withdrawn
- 1996-08-13 EP EP96932443A patent/EP0855953A2/de not_active Ceased
- 1996-08-13 CA CA002228755A patent/CA2228755A1/en not_active Abandoned
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH577376A5 (en) * | 1974-11-26 | 1976-07-15 | Netstal Ag Maschf Giesserei | Plastics injection moulding machine - having hydraulically operated plasticising injection screw driving shaft, pistons-cylinders and guide beams |
| EP0247208A1 (de) * | 1985-11-30 | 1987-12-02 | Fanuc Ltd. | Antriebsvorrichtung für spritzgiessmaschine |
| EP0316561A1 (de) * | 1987-10-20 | 1989-05-24 | Karl Hehl | Kunststoff-Spritzgiesseinheit |
| EP0427866A1 (de) * | 1989-05-24 | 1991-05-22 | Fanuc Ltd. | Spritzgiessvorrichtung vom typ mit zwei platten |
| JPH04193515A (ja) * | 1990-11-28 | 1992-07-13 | Nissei Plastics Ind Co | 電動式竪型射出成形機 |
| EP0576925A1 (de) * | 1992-06-23 | 1994-01-05 | Battenfeld Kunststoffmaschinen Ges.m.b.H. | Spritzaggregat für Spritzgiessmaschinen |
| EP0581401A1 (de) * | 1992-07-17 | 1994-02-02 | MANNESMANN Aktiengesellschaft | Spritzgiessmaschine |
| EP0627289A1 (de) * | 1993-05-29 | 1994-12-07 | Karl Hehl | Spritzgiesseinheit für eine Kunststoff-Spritzgiessmaschine |
| DE4334134A1 (de) * | 1993-10-07 | 1995-04-13 | Battenfeld Kunststoffmasch | Spritzgießmaschine |
| DE4344335A1 (de) * | 1993-12-23 | 1995-06-29 | Krauss Maffei Ag | Einspritzaggregat für eine Spritzgießmaschine |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 016, no. 523 (M - 1331) 27 October 1992 (1992-10-27) * |
Also Published As
| Publication number | Publication date |
|---|---|
| US5968563A (en) | 1999-10-19 |
| EP0855953A2 (de) | 1998-08-05 |
| JPH11511083A (ja) | 1999-09-28 |
| CA2228755A1 (en) | 1997-03-06 |
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