DE8423228U1 - DEVICE FOR THE PRODUCTION OF PLASTIC PARTS IN THE INJECTION MOLDING OR REACTION INJECTION MOLDING PROCESS - Google Patents

Description

Patent attorney Dipl.-lng. Siegfried Schirmer SONS ¹ J ₂₉₅₇₆₂ Authorized Representative - 9 - 08/02/1984

before the European Patent Office 406 / 58-4

Applicant: Stübbe GmbH Flutstrasse 94 2940 Wiltaelmshaven

Device eur manufacture of plastic

parts in injection molding or reaction injection molding

The invention relates to a device and a method for producing plastic parts from thermoplastics, Q! Duroplastics and / or elastomers in injection molding or re action injection molding process, with one or more Locking units in horizontal or vertical design for receiving one or more molds arranged in a plane and with an associated injection unit for successive spraying of the forms in which each mold half is arranged on a mold mounting plate is, of which one is movably arranged in each case.

Devices are known in which the injection unit, which can be moved in level, has several stationary Closing units are assigned or in which the injection unit is arranged in a stationary manner and the closing units are each arranged to be movable in one plane.

Cooling times are necessary for the molding of the molded parts due to the process. Multi-station door directions are therefore also used for large-scale production. These Mebrstation devices are for the production of plastic parts of small and medium dimensions suitable, but less for the production of larger parts. For the production of large molded parts, the use of mobile

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ier manufacturing devices uneconomical. Several individual door directions are required for the production of a single large molded part in quantities. that require a large amount of equipment, a large footprint and a lot of energy.

Be sir to the devices of the known genus! when hosing down each individual form arranged in one plane O the full process-related mold locking forces required. Depending on whether in high pressure or low pressure method If work is carried out on the mold, high and energy-intensive mold clamping forces may be required.

The present invention is based on the object high-quality plastic parts made of thermoplastics, thermosets and elastomers, especially large, thin-walled and flat molded parts in high quality in injection molding or reaction injection molding process with a minimum of equipment, To manufacture space and energy requirements economically in large series.

The solution to this problem is to use new and high quality plastics for new areas of application Pre-condition. This includes, among other things, the endeavor to high valuable chemical materials with tailor-made properties profile to be used for exterior and interior applications in vehicle bodywork. You related benefits in Regarding weight savings, freedom from corrosion and improved functionality as well as the unlimited design possibilities Opportunities in particular injection-molded body parts are of great importance for future car body construction. The previously composed of several individual sheet metal parts

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In the future, welded assemblies will be made up of far fewer individual parts to form a plastic assembly. High-quality plastic body parts open up completely new possibilities. The functional improvements associated with the use of high-quality chemical materials are coming at the same time to a large extent counteract the increased demands for increased vehicle safety and economy.

, Plastic body panels are large-area spatial Structural and latticework as well as exterior and interior cladding, which are predominantly flat in shape. These parts must be produced economically in large quantities, in a wide range of tolerances and excellent quality be.

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According to the invention, the set object is achieved by a multi-station locking unit composed of one or more 2-storey closing units in a horizontal and / or vertical design, with each 2-storey locking unit has two molding levels, each of which has two

several guide elements can be moved horizontally or vertically * ~ Borrowed mold clamping plates and a fixed Fonnauf clamping plate are assigned as well as one or more external injection units for high pressure injection casting process or the reaction injection molding process ver are arranged mobile or stationary.

The multi-station locking unit expediently has a fully hydraulic locking system, each of which 2-storey locking unit is assigned one or more locking cylinders, with a fixed end plate and over one or more closing pistons with the outer moving

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are connected to a fixed unit. In the embodiment of the fulfillment is the middle one Form mounting plate movably arranged via separate travel cylinders. In a preferred exemplary embodiment Each mold level is made up of two identical molds, each consisting of two mold halves.

In one implementation of the method according to the invention ,. for the production of plastic parts using the device according to the invention are the between the three mold mounting plates arranged two parts of the same mold of a clamping unit at the same time of one Injection unit is sprayed off in the high pressure or low pressure process, whereby the pairs of molds of each 2-storey soleplate unit alternately sprayed in the cascade principle who the.

Further expedient refinements of the invention emerge from the further subclaims.

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Due to the alternate spraying of the molds in the Kaska-C denprinzip, the process-related cooling times in Manufacturing process largely compensated. There is also an advantage when removing the finished plastic parts from the individual mold levels. Only one mold opening path is required for two mold levels. This makes it possible to use just one automatic removal device to remove the finished plastic parts from four mold levels to be taken one after the other. By arranging two parts of the same shape located one behind the other in the horizontal construction or two on top of each other

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The same-part shapes in the vertical construction in each closing unit will result in the output of finished parts constant clamping force requirement doubled. The process-related cooling time required to mold the plastic parts in the molds of the first clamping unit is, in the high-pressure injection molding process after the end of the holding pressure phase, the drive side is used for the guard locking of the molds in the second clamping unit are used for the subsequent mold filling process.

According to the invention, there is the possibility of large-area complex body part made of plastic in the Injection molding process or reaction injection molding process produce. The locking units have a sufficient number of Corresponding mold installation height and appropriate openings paths with a minimum of floor space. The column construction results in an open-sided arrangement in the area of the shapes, which means that parts removal devices can be attached in any position.

The individual component groups of the device, such as the clamping unit, injection unit, drive units and control systems, are in the modular system of standardized assemblies that can be combined with one another. composed. With the fully hydraulic locking system a stiff, plate-parallel guard locking for large plastic body parts is guaranteed. the The closing and opening speeds of the closing and drive units can be regulated in stages. Same goes for the low pressure phase (tool protection) with simultaneous (monitoring of the pressure. By arranging several Injection units that are used in high-pressure injection molding with several

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ren plasticizer cylinders and screws are equipped, two forms can be sprayed at the same time. In connection with high injection speeds and -presses are large parts with an extreme length / wall thickness ratio in high quality and large pieces number to manufacture economically.

The high-pressure injection molding process is particularly suitable for the production of complex precision molded parts.

New modified thermoplastic and thermosetting molding compounds open up new ones, especially for large molded parts and advanced applications. Compared to traditional materials, these materials have to but also within a narrow tolerance range and high quality can be processed economically in large series.

In addition to the material, the material-specific shape design and optimal mold constructions, production facilities are required that guarantee a high degree of constancy of the processing parameters in large-scale production. Special The filling process is important in the high-pressure injection molding process. The shape of the molded part is based on the Flow path / wall thickness ratio basic requirements.

An excellent flow behavior of the melt, high injection speeds and pressures, the right gate system and the right gate position are here important prerequisites for obtaining precision molded parts of high quality and dimensional stability.

Embodiments of the invention are shown in the drawing and are described in more detail below.

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cc

C ·

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Show it:

1 shows a vertical section through a multi-station locking unit with two closed shapes in FIG horizontal storey construction;

Fig. 2 is a horizontal section through a multi-station

Clamping unit with one closed and one f- an open form in the respective horizontal

talen Formetage;

3 shows a vertical section through two mold halves, which are fixedly arranged on the stationary mold mounting plate, in a horizontal tier construction with a variant of the mold arrangement;

4 shows a vertical section in the direction of the stationary platen through the two central movable platen; 20th

, Fig. 5 like Fig. 1, combined with an injection unit for ^ the high pressure injection molding process;

6 shows a vertical section in the direction of the mold floors A ₂ and B ₂ through the two central mold mounting plates combined with two injection units for the high-pressure injection molding process;

7 shows a vertical section through a multi-station bathroom unit, each with a closed one

and an open mold in the respective vertical mold floor;

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Fig. 8 is a horizontal section through two firmly on the Sliding table arranged mold halves in vertical construction with a variant of the mold arrangement and 5

9 shows a vertical section through a multi-station clamping unit with two closed molds in FIG vertical design, combined with an injection unit for the high pressure injection molding process. 10

A multi-station locking unit 1 is formed from two 2-floor locking units A; B in a horizontal or vertical design, with each 2-floor locking unit A; B each having two shaped floors A ₁ JA ₂ and B ₁ ; B ₂ . Each mold level A ₁ JA ₂ and B ₁ JB ₂ in turn has a mold 18 and 19 'which are identical in parts and which consist of two mold halves 18'; 18 "and 19>; 19 ·· exist.

The multi-station locking unit 1 is arranged in a frame-like stud work 9. Four guide elements 6 are assigned to each closing unit AjB, the middle guide elements 6 being assigned to both closing units AjB on one side. You guide elements 6 store at the end faces one side in Frame i gen stud frame 9. In horizontal design the guide elements 6 as spars and vertical construction are designed as columns. There is also the possibility of separately assigning four guide elements 6 to each locking unit AjB, in which the individual 2-storey locking units A and B are then combined to form a multi-station locking unit.

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A 2-storey clamping unit A; B has two movable platen 3 and 4 or 4 ¹ and a fixed platen 2. The fixed platen 2 is in a horizontal construction on an outer side of the clamping unit and in a vertical construction on the lower one Side of the clamping unit arranged. The two horizontally or vertically movable platen 3 and 4 or 4 * of the 2-tier clamping units A and, -, IB are in half-shell bearings 8 on four guides each elements 6 stored and guided. The middle form clamping plate 4; 4 'is via separate travel cylinder 13 be movably arranged and has removable bearing holders 7. In addition, the movable mold mounting plates 3; 4; 4 'are attached to the frame-like stud structure 9 Guide way 10 slidably arranged. The Camp 11.

The multi-station locking unit 1 has a fully hydraulic locking system, with each 2-storey locking unit

A; B one or more lock cylinders 12 are assigned,

with a fixed end plate 5 and a U or more closing piston 12 * is connected to the outer movable platen 3 to form a fixed unit. An oil closes on the fixed end plate 5 tank 14 with pump system and valve station.

The fixed platen 2 and the fixed end plate 5 are non-positively connected to the guide elements 6. Between the fixed platen 2 and the middle movable platen 4; 4 * and the outer movable platen 3 and the middle movable mold mounting plate

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te 4; 4 'a form 18; 19 is arranged in each case. ^{One mold half 18 '*; 19 β is} fixedly arranged on both sides of the central movable mold mounting plate 4; 4'. The sprue sides of the mold halves 18 ';19' are attached to the mold mounting plate 4; 4 '. The other mold halves 18 * and 19 ^f 'are fastened on the fixed platen 2 and on the outer movable platen 3.

Each 2-storey locking unit has a vertical design A; B is assigned a sliding table 15 which can be extended and retracted in the longitudinal and transverse directions and is in the production position on a flush with the upper edge of the floor 20 final sliding table plate 16, under which in turn a foundation plate 2 * is arranged. To the arrest tion in the production position, the sliding table 15 has a locking device. On the sliding table 15 is j a mold half 18 'attached, so that with this design

guide the arrangement of the fixed platen 2 : 20 can be omitted.

U The multi-station locking unit 1 in 2-storey construction

is to see with devices for processing thermoplastic or thermosetting molding compounds in high pressure injection

25 casting process each with screw units 22 and drive 23 or in the reaction and low-pressure process Tank farms, dosing devices and mixing heads complete., Tiert. The multi-station locking unit 1 is off

for economic reasons, each 30 while only with the mold clamping forces that are necessary for the respective procedure is currently required.

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When processing molding compounds with screw units 22 in the high-pressure injection molding process, there is one injection unit 21 for each 2-tier closing unit on the outer sides parallel to the mold mounting plates 2 $ 3; 4; 4 ' movably arranged. Each injection unit 21 consists of one or more plasticizing cylinders and screws 22 and screw drive 23. The screw units 22 are located one below the other and within the injection unit 21 Can be adjusted lengthways and crossways.

The individual screw units 22 of the injection unit 21 are jointly mounted on several traveling bridges 26 with fastening parts 29. The driving bridges 26 with the required counter bearings 27 on guide tracks 25 »which are fixedly arranged in the frame-like stud structure 9 are guided horizontally and / or vertically. Each injection unit 21 is assigned a plurality of separate driving cylinders 28, which are arranged within the bridge structure.

When processing multi-component molding compounds in the reaction and low-pressure process, one or more injection units are arranged at ground level next to the multi-station clamping unit 1 for each 2-storey clamping unit A; B.

The injection unit for multi-component molding compounds is equipped with tank and working containers, metering pumps and multi-component mixing heads. In the high-pressure injection molding process, the multi-station clamping unit 1 offers the possibility of placing the molds 18; 19 in the mold via a sprue system. Separation level 1S ¹ '¹; ^ ¹¹¹ or via a central, area-wide hot runner system. Both sprue systems have an injection unit 1 each for the 2-storey loading

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drive equipped with two screw units 22. Each screw unit 22 is assigned to a forming floor A ₁ .A ₂ or B ₁ SB ₂ . The molds 13; 19 are hosed down in the 2-level closing unit at the same time. 5

The hosing down of the forms 18; 19 in the parting line 18 ···; 19 ' ·· there are limits due to the flow path / wall thickness ratio, especially for large and thin-walled molded parts. In the case of molded parts where the sprue is possible via the Poi separation plane, the molds are hosed off via a 90 ° molded piece. For the injection molding process, the injection unit 21 moves with the two corner corner units 22 onto the AnguS bushings of the 90 ° shaped piece of the molds 18; 19. Pur this operation are two screw units 22 arranged inside the injection unit 21 in addition can be moved for short distances. This design enables an exact, forceful application of several injection cylinder nozzles to several shaped bushings. After the molds 18; 19 have been sprayed off, the injection unit 21 moves away from the molds 18; 19 via the driving cylinders 28. The molds 18; 19 can then be opened and the molded parts removed.

The injection molding of the molds 18; 19 via the mold parting plane 18 ···; 19 · "is optionally also possible with an injection unit 21, which is arranged at ground level in the L-position to the 2-storey clamping unit A; B. This is done with this arrangement The molds 18; 19 are sprayed via the injection cylinder nozzle directly into the mold parting plane la · '·; ^ ¹ ' ^1. The 90 ° shaped piece is omitted in this arrangement. 19 in the form floor A ₁ ; A ₂ and B ^ B ₂ equipped.

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The injection unit 21 moves to spray the molds 18; 19 on the Foras sockets in the parting plane and locks them with the molds 18; 19 or the central movable mold mounting plate 4. Before the mold parts are removed, the Injection unit 21 from molds 18; 19 again. Connected to the L position of the injection unit 21, however, is a greater space requirement for the overall device.

The hosing down of the forms 18; 19 in the HeiÖkanal system is coming especially in the processing of thermoplastics. The Heiflkanal has the task of the melt without heat loss or overheating from the injection cylinder nozzle via heated hot runner blocks 30 and nozzles to in to direct the mold cavity. In the case of large and thin-walled molded parts, it is often only possible via a hot runner system Multiple nozzles possible to produce the molding technically flawless. The hot runner process stands out characterized by particular economy. Savings in the sprue material, no reworking on the molded parts and short cycle times are major advantages of this process.

When using the hot runner system, the central movable platen consists of a split one Plate 4 ¹ , that is, from two individual plates. A heated central hot runner block 30 for two molds 18; 19 is arranged between the two plates 4 ^1. The central hot runner block 30 has a separate and central hot runner for each mold 18 and 19. The simultaneous Ab spray with two adjacent screw units th 22 takes place via a likewise heated Y-shaped 90 ° shaped piece that firmly with the central hot runner

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block 30 is connected. There is dae at the entrance of the melt Y-shaped 90 ° fitting with two heated and hydraulic actuatable shut-off nozzles 31 are provided. At the exit of the melt from the central hot runner block 30 are located opposite two machine nozzles 32. These nozzles lead through the centering bores of the mold mounting plates 4 * directly onto the central molded bushings of the respective hot runner system of forms 18 and 19. The two central nozzles \ are heated and have a short-stroke bearing and become a force-fit System on the shaped bushes in the forms 18 and 19 pressed hydraulically. The injection cylinder of the injection unit 21 are also equipped with hydraulic shut-off nozzles at the melt outlet.

To spray the molds 18 and 19, the injection unit 21 moves over the driving cylinder 28 with the injection cylinder nozzle to the central machine nozzle 31 of the hot runner block 30. At the start of the spraying process, the two adjacent hydravilic Ye connection nozzles open and release the melt flow. For two forms of a 2-storey clamping unit a system of J A total including four heated nozzle closure is required.

In order to spray the molds and to remove the molded parts, the injection unit 21 moves in parallel over the driving cylinder 28 to the molds 18; 19 in each case in the injection or removal position. In order to freeze the melt and cold plug on To prevent exit and entry at the nozzles, the melt in all systems is controlled with the locking mechanism kept flowing at all times.

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When manufacturing 2x2 molded parts with the same parts on a multi-station clamping unit 1, it is possible to inject a total of four molds with just one injection unit 21 and two screw units 22. For this purpose, the injection unit 21 is not only parallel to the mold mounting plates 2, _f 4 'but also across the two 2-shelf clamping units A;, 3, 4 B Toggle movable classified. The molds are hosed down after | specified program also in the cascade principle. |

f Optionally, there is also the possibility of firmly connecting the injection unit 21 to the central movable platen 4 *. In this embodiment, the worm {einbeiten 22 are two heated hot channel adapter just fall f firmly connected to the hot runner block 30. In the respective \ gen mold opening or -schließbewegung the entire injection unit drives one of the two-storey clamping unit A and B forcibly with a Formöffnungeweg. The one about the closing | cylinder 12 and the drive cylinder 13 carried out movement running% is supported by the driving cylinder 28 of the belt 21 Spritzein- {synchronously.

On the outside of the frame-like stud structure 9 are \

accessible working and inspection platforms 33 arranged, f;

which are provided by a safety railing '. In Fig. 5 and 6, the material inputs shown are

Filling funnel denoted by 24. _:

Between the three mold mounting plates 2; reasonable arranged ^f 4 * two parts the same molds 18;; 3; 4 19 a SchiieSeinheit A; B are sprayed simultaneously from an injection unit in the high or low pressure process, wherein -;

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the pairs of molds 18; 19 of each 2-storey clamping unit A; B be hosed alternately in the cascade principle.

With this manufacturing process, the part ejection rate is reduced while the clamping force requirement remains the same pelt. The prerequisite for this is the use of two molds 18; 19 with the same parts, the surfaces of the moldings are arranged congruently in the direction of the locking system Q for physical reasons. This creates an anson saved most required second manufacturing device.

Another advantage of the invention lies in the combination of several 2-storey locking units into one Multi-station locking unit 1. This additional arrangement allows the alternating spraying of several 2-storey clamping units with a hydraulic drive system, which only has installed drive power for one mold floor, with which four mold floors A ₁ JA ₂ and B ₁ JB ₂ load in an alternating manner. be driven.

The device according to the invention requires a minimal footprint. Compared with the known devices an area is saved by approximately 75 f> in the horizontal version, ie the Flatzbedarf amounts to only about 25 1> of the previously required surface. In the vertical version, the ratio of the required floor space is even more favorable compared to the known devices.

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List of the reference characters (405 / 58-3)

1 multi-station locking unit

2 platen (feet arranged) 2 foundation plate

3 platen (outer, movably arranged)

4 platen (middle, movably arranged) 4 «platen (split design like 4)

5 end plate (fixed)

6 guide elements (bars and pillars)

7 bearing holder for 3, 4 and 4 *

8 half-shell bearings for 3, 4 and O 9 stud frames

10 guideways for 3, 4 and 4 *

11 bearings for 3, 4 and

12 lock cylinders

1?' Closing piston for

13 folding cylinders

14 oltsik with pump system and valve station

15 sliding table

16 sliding table top

17 sliding table rails

18 Form in Form A ₁ and B ₁ 18 »Form half from 18

.-> 18 "mold half from 18

18 · "Mold parting line from

19 mold in mold floor A ₂ and B ₂ 19 'mold half from 19

19 "mold half from 19

19 »» · Mold parting line from

20 Upper edge of the floor

21 Injection unit

22 plasticizing cylinder and screw (screw unit)

23 worm drive

24 material hopper

(I · Il Il »· *

25th Guideways I. 26th Driving bridge *
i 27 Counter bearing for 26 t
I. 28 Driving cylinder for 21 29 Fixing part for 22 and 23 on 26 [ 30th Hot runner block with 90 ° fitting 31 Machine locking nozzle J: 32 Machine nozzle I. 33 Working and inspection platform I. A. 2-storey locking unit I. ^A 1 Formage 1 A ₂ Formage I. B. 2-storey locking unit ^B 1 Formage ^B 2 Formage

Claims (4)

Patent attorney OsningstraBe 10 DipHng. Siegfried Schirmer SAS ™ Authorized Representative 02.08.1934 before the European Patent Office 406 / 58-4 Applicant: Stübbe GmbH Flutstraße 94 Wilhelmshaven Protection claims: 1. Device for the production of plastic parts Thermoplastics, thermosets and / or elastomers in the injection molding process or reaction injection molding process, w with one or more clamping units in horizontal ler or vertical design to accommodate an or several molds arranged in one plane and with an injection unit assigned for this purpose for the continuous spraying of the molds, in which each mold half is arranged on a mold mounting plate, from each one is movably arranged, characterized by a multi-station locking unit (1) consisting of one or more 2-storey locking units (A; B) in a horizontal and / or vertical design, with each 2-storey locking unit (A; B) two form levels each (A ₁ ; A ₂ and B ₁ JB ₂ ), each of which has two on several Guide elements (6) horizontally or vertically movable mold mounting plates (3; 4; 4 ^f ) and a mold mounting plate (2) arranged on feet are assigned, as well as one or more external injection units for the high-pressure injection molding process or the reaction injection molding process are movable or stationary. 2. Apparatus according to claim 1, characterized in that the multi-station locking unit (1) has a full by- draulic closing star, each 2-Fta- gene clamping unit (A; B) one or more locking cylinders (12) are assigned, which are connected to a fixed end plate (5) and via one or more locking ^{pistons (12 1} ) with the outer movable platen (3) to form a fixed unit . 3. Apparatus according to claim 1 or 2, characterized in that the middle platen (4; 4 «) ~ \ is movably arranged via separate travel cylinders (13) net is. _f , 4. Device according to one of claims 1 to 3, characterized marked that each form level (A ^ Ap or Β - .; Βρ) has an identical shape (18; 19), each of which consists of two mold halves (13 ·; 18 ·· and 19 *; 19 '*). 5. Device according to one of claims 1 to 4 _f, characterized in that the two fixed mold mounting plates (2) are connected to form a unit in the clamping units (A; B). 6. Door direction according to one of claims 1 to 5, characterized in that the multi-station locking unit (1) is arranged in a frame-like stud work (9). 7. Device according to one of claims 1 to 6, characterized in that the movable mold mounting plates (3; 4; 4 ·) of the 2-storey locking units (A; B) in Half-shell bearings (8) on four guide elements each (6) are stored and managed. —Ττ ■ -, Tf W H ■ ^ θ. Device according to claim 7 »characterized in that that the half-shell bearings (8) are arranged interchangeably. 9. Device according to one of Claims 1 to 8, characterized in that the central movable mold mounting plate (4; 4 ⁽ ) is associated with removable bearing holders (7). 10. Device according to one of claims 1 to 9 »thereby characterized in that the middle movable mold mounting plates (4; 4 ') of the 2-day clamping units (A; B) are mounted and guided in the middle on a common pair of guide elements (6). 11. Device according to one of claims 1 to 10, characterized in that the guide elements (6) non-positively connected to the fixed platen (2) and the fixed end plate (5) are. 12. Device according to one of claims 1 to 11, characterized in that the guide elements (6) to the Long sides of the device are held on one side in the frame-like stud structure (9). 13. Device according to one of claims 1 to 12, characterized in that the movable Foraiauf clamping plates (3; 4; 4 ^f ) in the frame-like stud structure (9) attached guide tracks (10) are additionally slidably arranged in a horizontal construction. - 3 - J 14. Device according to one of claims 1 to 13, characterized in that one mold half (18 "; 19 ') is fixedly arranged on both sides of the central movable mold mounting plate (4; 4 ·) 15 · Device according to claim 14t, characterized in that the sprue sides of the mold halves (18 ^lf ; 19 ^J ) are arranged on the central movable mold mounting plate (4; 4 ·).
10 16. Device according to one of claims 1 to 15 »characterized in that the platen on the fixed mold mounting plate (2) and the outer movable Fora (3) each have a mold half (18 ';19") is fixedly arranged. 17. Device according to one of claims 1 to 16, characterized in that in each vertical construction Eta 2-gen-closing unit (A; B) is assigned in the longitudinal and one transverse direction and extensible sliding table (15). 18. The device according to claim 17, characterized in that the sliding table (15) has a locking device having. 19. Apparatus according to claim 17 or 18, characterized in that that the sliding table (15) in the production position on a flush with the upper edge of the foot bottom (20) final sliding table top (16) is stored. 20. Device according to one of claims 1 to 19 »characterized in that on the viewing table (15) a Mold half (18 ·) is fixedly arranged. 21. Device according to one of claims 1 to 20, characterized in that each injection unit (21) consists of one or several screw units (22) with drive (23) is formed. 22. Device according to one of claims 1 to 21, characterized in that the injection unit (21) is parallel to the mold mounting plates (2; 3; 4; 4 ') is arranged. 23 · Device according to one of claims 1 to 22, characterized characterized in that the screw units (22) one below the other and within the injection unit (21) longitudinally and are arranged to be adjustable transversely. 24. Device according to one of claims 1 to 23 »de-through characterized in that the screw units (22) on several bridge bridges (26) with fastening parts (29) are stored. 25 * Device according to one of claims 1 to 24, characterized in that the parking bridges (26) with the counter bearings (27) on in the frame-like stud work (9) attached guide tracks (25) are slidably arranged. 26. Device according to one of claims 1 to 25 »characterized in that each injection unit (21) has several Driving cylinder (28) are assigned. -π-r 27. Device according to one of claims 1 to 26, characterized in that the injection unit (21) on the Travel cylinder (28) longitudinally and / or transversely to the 2-storey locking unit (A; B) is arranged to be movable. 28. Device according to one of claims 1 to 27, characterized in that on the BUsenselte of the mold (18; 19) in the mold ^{parting plane (18 111} Ji ⁰ - ¹¹¹ ) 90 ° injection mold> - -J pieces are arranged. 10 29. Device according to one of claims 1 to 28, characterized in that the 90 ° injection molded pieces laterally offset from the center of the mold for the simultaneous injection with two screw units (22) for two mold levels (A,. ', K ^ and B ₁ JBp ) are arranged. 30. Device according to one of claims 1 to 26, characterized in that the central movable platen is designed as a split platen (4 ¹ ). 31. The device according to claim 30, characterized in that the middle movable and split mold mounting plate (4 ¹ ) can be locked with quick release devices. 32. Device according to one of claims 1 to 31, characterized in that in the plate parting plane of the middle movable and split platen (4 ¹ ) a heatable central hot runner block (30) is arranged. f —r ~ "~ ■ ■■» - = - * ■ ♦ · - * -,. ·· »· ·. ■ * t t. . π ti 33. Device according to one of claims 1 to 32, characterized characterized in that the hot runner block (30) has a heatable Y-shaped 90 ° connector for the outside having simultaneous spraying of two molds (18; 19) with two screw units (22). 10 34. Device according to one of claims 1 to 33, characterized characterized in that on the outer Y-shaped 90 ° shaped piece, two heatable hydraulically actuated Closing nozzles (31) for each screw unit (22) are fixedly arranged. 35 «Device according to one of claims 1 to 34» thereby characterized in that the hot runner block (30) has two centrally heated nozzles (32) located internally in the center of the central movable and split th mold mounting plate (4 ^1). 36. Device according to one of claims 1 to 35 »characterized in that the two nozzles (32) are hydraulic are short-stroke bearings and can be pressed onto the shaped bushings of the molds (18; 19) through the centering bores of the central movable and split mold mounting plate (4 ^1). 25th 37. Device according to one of claims 1 to 36, characterized characterized in that the hot runner block (30) with swei separate hot runner bores for a separate one Melt flow from two screw units (22) to two Forms (18; 19) is provided. 38. Device according to one of claims 1 to 37, characterized in that the hot runner block (30) in each case after the heated shut-off nozzles (31) and in front of the central heated nozzles (32) 90 arc pieces. 39 * Device according to one of claims 1 to 38, characterized characterized in that the screw units (22) on ζ ~ _} the screw tip via a heatable hot runner Adapter with the middle movable split platen (4 ¹ ) are positively connected. 40. Device according to one of claims 1 to 39, characterized in that the injection cylinder of the injection unit (21) with hydraulically operated shut-off nozzles are equipped. 41. Device according to one of claims 1 to 40, characterized in that the driving cylinder (28) of the one Injection unit (21) with the Fahraylinder (13) of the middle movable split platen (4 ¹ ) O can be moved synchronously. 42. Device according to one of claims 1 to 41, characterized in that accessible work and inspection platforms (33) are arranged on the outside of the frame-like stud structure (9). 43 · Device according to one of claims 1 to 42, characterized in that the hydraulic drive for the 2-storey closing devices (A; B) is designed _{for only one forming storey (A 1} 5A ₂ JB _{1 ; B 2).}