DE102014014388B3 - Multi-component injection mold and injection molding process - Google Patents

Abstract

The present invention discloses a multi-component injection mold (1) with two mold halves (2, 3) which can be moved apart and back together, between which at least two mold cavities (4, 4 ') are present. A first mold cavity (4) is a Vorspritzkavität (4) and a second mold cavity (4 ') a further injection cavity (4'). Further, a disengageable and swingable index plate (5) is provided, which is arranged between the mold halves (2, 3) on which there is at least one holding device (52) with which a preform (7) from the Vorspritzkavität (4) in the next Cavity (4 ') can be implemented. On the index plate (5), a drive device (6) is arranged, which is operatively coupled to the holding device (52) and is adapted to rotate the holding device (52) about its longitudinal axis (L) during the conversion of the pre-molded part (7). In addition, a method for injection molding using the device according to the invention is disclosed.

Description

The following invention relates to a multi-component injection mold and to a method for injection molding.

In multi-component injection molding, a distinction is made between serial and parallel processes, whereby in the case of the serial processes the different injection molding materials are injected one after another into the mold cavities. The injection of the injection molding materials can be carried out in the same cavity or in different cavities, in which case a conversion process takes place.

In the injection molding of asymmetrical components of two or more injection molding materials, it has hitherto been customary to provide gating both on the fixed and on the movable mold half of the injection molding tool. Here, a pre-molded part is injected with the first injection molding material in a Vorspritzkavität, which then solidifies, the gating of the Vorspritzkavität is usually provided on the fixed mold half.

To inject the second injection molding material, the preform after opening the mold halves by means of an index plate on which a holding device is provided for each preform, taken from the Vorspritzkavität and converted into the Fertigspritzkavität by the index plate is rotated. The rotation can be done around a horizontal turning axis or a vertical turning axis.

The second injection molding material is then injected after the injection over a gating in the movable mold half. Alternatively, the pre-molded part can be designed so that its shape provides a flow channel for the finished spray component, through which a region to be sprayed for the finished spray component is filled. However, this means that this creates an additional area where you can see the finished spray component. But that can affect the appearance.

An injection mold with an index plate to implement is for example off WO 2004 024 414 A1 known. Further, the WO 2012 028 818 A1 an injection mold in which is also implemented via an index plate; There is a multi-floor tool in which each floor is assigned its own index plate.

Injections in the movable mold half are complicated, expensive and error-prone, since in the movable mold half a Schmelzleitsystem, a heater and / or a separate Plasitifizierer must be provided. Respectively. It must be created for the Fertigspritzling in the pre-molded an additional flow connection, which can affect the appearance of the injection point.

Based on this prior art, it is the object of the present invention to provide an improved multi-component injection molding tool.

This object is achieved by a multi-component injection molding tool having the features of independent claim 1.

In addition, there is the task of creating an injection molding process, with the multi-component injection molded parts with less equipment than previously produced.

This object is achieved by a method for injection molding with the features of claim 12.

Preferred developments of the device and the method are each described by the subclaims.

In a first embodiment, the multi-component injection molding tool according to the invention has two mold halves which can be moved apart and again together, between which there are at least two mold cavities. A first mold cavity is a preform cavity and, in the case of a second mold cavity, a further injection cavity, which can be a finished injection cavity, or, when several components are sprayed, a second cavity following the projection cavity. The multi-component injection molding tool further has a disengageable and swingable index plate disposed between the mold halves. At the Indexplatt or one or more holding devices is arranged with the / a preform from the Vorspritzkavität in the Fertigspritzkavität is implemented. In addition, a drive device is arranged on the index plate, which is operatively coupled to the holding device and is intended to rotate the holding device when converting the pre-molded part about its longitudinal axis.

By "disengagement" herein is meant a movement of the index plate (including the pre-and / or finished syringe connected thereto via the holders) to remove the pre-and / or finished syringes from the mold cavities; the disengagement may suitably be a movement in the opening direction of the mold halves.

As used herein, "translating" means that the rotation of the holder device occurs in close temporal relation to the swiveling of the index plate. This includes that the holder is already rotated about its longitudinal axis prior to the actual pivoting of the index plate during the actual swinging or after the pivoting, but before the engagement of the index plate.

Under index plate, often referred to as index system, index cross or insert, is herein understood a rotatable transfer device with which the preforms are transferred from the Vorspritzkavität in which the first component is injected into the Fertigspritzkavität in which the second component is injected , The first and second components (injection molding materials) may differ, for example, in their mechanical or thermal properties or also in color. Index plates per se are known to the person skilled in the art in horizontal and vertical construction.

However, it can also be provided to inject more than just two components with the multi-component injection molding tool according to the invention, for example four or more. In this case, a corresponding number of cavities are provided and the conversion angle of the index plate is adjusted.

One of the mold halves is herein a fixed mold half, and only on this mold half is one or more spray nozzles for injecting an injection molding material for each mold cavity. Injection of the movable mold half is omitted herein. For this reason, the tool according to the invention can be manufactured significantly more cost-effectively than comparable tools, since a melt slit system, material preparation etc. for the movable mold half is not necessary. This also results in cost advantages in operation, since the set-up times are reduced and the tool can be better maintained.

With the multi-component injection molding tool according to the invention, it is possible for the first time to place different injection points on one part in such a way that further components can be gated on at different circumferential positions of the molded part, even though the injection of all components in the tool takes place from the same side. By the described possibility to rotate the holder together with pre-molded part when moving the index plate about its own longitudinal axis, a gating of the second component of the fixed mold half is made possible at any circumferential position of the pre-molded part.

According to yet another embodiment, when the tool is closed, a portion of the holding device can project into the mold cavities and form an index core. With the multi-component injection molding tool according to this embodiment, it is therefore possible to produce hollow components inside. The index core is first received in the Vorspritzkavität and is molded, after opening the mold halves and the disengagement of the index plate is rotated about its longitudinal axis and received by swiveling and engagement of the index plate in the Fertigspritzkavität, so that a gating of the second injection molding material at a different circumferential position can be done.

Alternatively, a portion of the holding device may protrude into the mold cavities in a closed mold state and have a recess which supplements the mold cavity. With this tool, solid bodies can therefore be produced. The recess of the holding device defines herein together with the respective mold inserts of the fixed and the movable mold half the pre-injection and Fertigspritzkavität. During injection, the injection molding material therefore also interacts with the surface of the recess of the holding device, which makes it possible to handle the injection molding on the holding device, d. h. to rotate its own axis and swing over the index plate. In addition, a sliding retaining element can fix the sprue.

In particular, the mold cavities may each be mold cavities, wherein a first part of the mold cavities is present in the movable mold half and a second part is in the stationary mold half. The first parts and second parts of the mold cavities may alternatively or additionally be formed asymmetrically, which is the case, for example, in complicated three-dimensionally curved components. Alternatively or additionally, it may be provided that the geometry of the finished injection cavity, which is rotated by the predetermined angular amount by which the holder is rotated during the conversion, rotated geometry of the Vorspritzkavität.

In yet another embodiment, it is proposed that at least the movable mold half has a cavity former which extends at least a little way into the first part of the projecting cavity. The cavity former may be a pin or core or a portion extending at least partially into the first part of the projection cavity. In this case, the holding device during pivoting of the index plate is preferably rotatable so far that a cavity of the pre-molded part produced by the cavity former points to the spray nozzle of the further injection cavity in the stationary mold half.

In this cavity can then also be injected from the fixed mold half ago a second component. The "cavity" may, for example, also be a recess in the outer wall, which is produced by the fact that the cavity former extends to the holding device designed as a core component.

The mandrel or shaft portion can in principle have any shapes; from a simple mandrel with a circular cylindrical cross section to complex geometries with variable cross sections.

In addition, the multi-component injection molding tool may be a multiple tool, wherein at least two holding devices facing away from one another, advantageously two mutually opposite rows of holding devices, are arranged on the index plate. Of the holding devices facing away from one another in each case one extends into an associated Vorspritzkavität and another in an associated Fertigspritzkavität.

With such a tool, it is advantageously possible to inject a Fertigspritzling in the Fertigspritzkavität while in the Vorspritzkavität a new pre-molded part is injected. It can also be provided to produce in one spray pass 8, 16, 32 or more injection-molded parts, for which purpose the corresponding number of holders are arranged on opposite sides of the index plate, suitably facing away from each other in rows.

The drive device may further comprise a gear transmission, wherein preferably with the holding device rotationally fixed an output gear is connected. The output gear is engaged with a drive tooth member which is supported in the index plate. The drive tooth element can be a toothed rack or a toothed wheel. The drive tooth element is driven by a motor, such as an electric motor, pneumatic motor or hydraulic motor, which may be arranged in the index plate. For this purpose, suitable drives are available on the market, which can both meet the requirements of a narrow space and provide the required drive power. Alternatively, it can also be provided for the rotational movement of the holding devices about their longitudinal axis does not provide its own drive motor, but to implement the movement of the index plate via a gear and use to drive the holding devices, for example by cooperation of a toothed ring on the index plate with other tooth elements.

In addition, the longitudinal axis of the holding device can be aligned normal to a turning axis of the index plate. Alternatively or additionally, the turning axis can be aligned parallel or normal to an opening direction of the mold halves. In principle, the multicomponent injection molding tool according to the invention can therefore be designed in vertical or horizontal turning technology.

The Vorspritzkavität and the Fertigspritzkavität can also be arranged offset by an angle of 90 ° to 180 ° with respect to the turning axis. The angular offset is determined as a function of the intended spray stations (if more than two components are to be injected) as part of a full revolution. With only two components, the Vorspritzkavität and the Fertigspritzkavität be offset from each other by 180 °. For example, in three or four components, or workstations, each one cavity for spraying, or edit a further component or making a process step provided in third or quarter-revolution intervals.

Finally, an ejection or stripping device can be provided on the index plate for each of the holding devices. The Auswerf- or stripping means may comprise a movable in the longitudinal direction of the holding device stripper plate or at least one ejector pin, which is for example extendable transversely to the holding device. Alternatively or additionally, an ejection or stripping device may be provided on the movable mold half, which preferably has one or more ejector pin (s) in a triggering state at least partially in the first, the movable mold half associated part of at least one of the mold cavities extend or extend.

By providing a further ejector on the movable mold half in addition to the ejection or stripping device on the holding device, it is possible to remove the component from the mold cavity without excessive deformation and risk of damage. This can be useful, in particular, if the forces that can be transmitted by the holding device to the component are only comparatively small, for example, if the holding device is not a core component, but only materially contacts a part of the surface of the injection-molded part. Here can be advantageously provided that the extension movement of the ejector of the movable mold half takes place synchronously with the disengagement of the index plate.

• a) Einspritzen eines ersten schmelzflüssigen Spritzgussmaterials in die Vorspritzkavität, dadurch Erhalten eines Vorspritzlings,
• b) Öffnen der Formhälften und Ausrücken der Indexplatte,
• c) Vor oder während des Umschwenkens der Indexplatte mittels der Antriebsvorrichtung um einen vorbestimmten Winkelbetrag um die Längsachse Drehen der Haltevorrichtung mit dem Vorspritzling daran,
• d) Einrücken der Indexplatte, dadurch Aufnehmen der Haltevorrichtung mit dem Vorspritzling in der Fertigspritzkavität,
• e) Einspritzen eines zweiten schmelzflüssigen Spritzmaterials in die weitere Spritzkavität und Erhalten eines Fertigspritzlings,
• f) Abstreifen des Fertigspritzlings von der Haltevorrichtung.

The method according to the invention for injection molding is carried out using a multicomponent injection molding tool according to the invention and comprises the following steps:

• a) injecting a first molten injection molding material into the cavity, thereby obtaining a preform,
• b) opening the mold halves and disengaging the index plate,
• c) Before or during the pivoting of the index plate by means of the drive device by a predetermined angular amount about the longitudinal axis Turning the holding device with the pre-molded part on it,
• d) engaging the index plate, thereby receiving the holding device with the pre-molded part in the Fertigspritzkavität,
• e) injecting a second molten spray material into the further injection cavity and obtaining a finished injection molding,
• f) stripping the finished syringe from the holding device.

In step c), the index plate is pivoted so far until the pre-molded part is at the next injection station and can be recorded accurately when it is engaged; with only two components around 180 °. The angle at which the holder is rotated about its longitudinal axis in step c) is determined individually for each component and depends on which circumferential position of the preform the gating of the second component is to take place.

In a further embodiment of the method can be provided in step a) by the cavity former of the movable mold half to produce a cavity of the pre-molded part and the preform in step c) to rotate about its longitudinal axis so far that the cavity to the injection nozzle of the further or has the Fertigspritzkavität in the fixed mold half. As a result, the cavity can be sprayed with a second component, for example a thermoplastic elastomer (TPE) or an elastomer, whereby both the gating of the first component and the gating of the second component can take place from the stationary mold half. Essential for this is the integrated into the process of rotation of the holder about its longitudinal axis during the implementation of the preform from the Vorspritzkavität in the Fertigspritzkavität.

Finally, in an additional embodiment, the multi-component injection molding tool can be a multiple tool which has at least two holding devices facing away from one another on the index plate.

In step c), when pivoting the index plate, in each case a holding device, from which a finished injection-molded part has previously been stripped off, can be rotated to the projection cavity and be received in the projection cavity in step d). It is a process that produces a pre-molded part and a finished part at each mold end, without leaving cavities unused, maximizing tool utilization and reducing unit costs. The principle can be transferred to any size, for example 8 + 8, 16 + 16, 32 + 32 tools, etc. which has the advantage that the output can be multiplied per tool closing.

These and other advantages are set forth by the following description with reference to the accompanying figures. The reference to the figures in the description is to aid in the description and understanding of the subject matter. The figures are merely schematic representations of embodiments of the invention.

Show it:

1 to 7 Longitudinal sectional views of a first embodiment of the multi-component injection molding tool according to the invention in various process steps,

8th to 14 Longitudinal sectional views of a second embodiment of the multi-component injection molding tool according to the invention in different process steps.

In the 1 to 7 is a complete production cycle with the multi-component injection molding tool according to the invention 1 shown. The multi-component injection mold 1 has two mold halves 2 . 3 that can be moved apart and again. One of the mold halves is the fixed mold half 3 and the other the movable mold half 2 , In the closed state of the tool are located between the two mold halves 2 . 3 two mold cavities 4 . 4 ' one of which is a pre-cavity 4 and the other a Fertigspritzkavität 4 ' is. In the finished injection cavity 4 ' a different injection molding material is processed than in the Vorspritzkavität 4 , The injection molding material is over the spray nozzles 43 . 43 ' or their respectively associated melt slit system of the projection cavity 4 or the Fertigspritzkavität 4 ' fed.

In the in 1 shown state is in the Vorspritzkavität 4 a preform 7 injected, which has a recess or cavity 71 did that when spraying from the cavity former 44 is generated by the movable mold half 2 starting in the pre-cavity 4 protrudes. At the same time is in the Fertigspritzkavität 4 ' in an already finished preform 7 injected a second component, here in the cavity 71 to thereby a Fertigspritzling 7 ' to obtain.

At the mold cavities 4 . 4 ' are divisible mold cavities, with a first part 41 . 41 ' the mold cavities 4 . 4 ' (please refer 3 ) in the movable mold half and a second part 42 . 42 ' the mold cavities 4 . 4 ' in the fixed mold half 3 is present. The first parts 41 . 41 ' and second parts 42 . 42 ' the mold cavities 4 . 4 ' are each part of one mold insert 45 . 45 ' . 46 . 46 ' in the respective mold plate of the fixed or the movable mold half 2 . 3 is included.

To the finished spray 7 ' from the tool 1 to be able to remove the mold halves 2 . 3 apart (see 2 ) and the index plate 5 in the opening direction Ö of the mold halves 2 . 3 disengaged (see 3 ). At the index plate 5 are mutually remote holding devices 52 provided on which the pre-molded part 7 and the finished spray 7 ' being held. In the embodiment shown, the holding devices are 52 around core components 52 , which are intended to produce a hollow molding. Each of the holders 52 is assigned to the index plate 5 a scraper 8th , one in the longitudinal direction L of the holding device 52 Ausfahrbahre stripper plate 81 Has. For stripping the stripper plate 81 extended and pushes the Fertigspritzling 7 ' from the holder 52 (please refer 4 and 5 ).

The following in 6 The step shown is the deciding factor: the one on the holding device 52 shown in the figure above present preform 7 is rotated through an angle of 180 ° about its longitudinal axis L by the holder 52 is turned. This is in the index plate 5 a drive device 6 provided, consisting of a drive motor 63 , a drive gear 62 , the rotation with the engine 63 coupled, and a driven gear 61 , rotatably with the holder 52 is coupled exists. The drive gear 62 is stored on the engine mount, while the output gear 61 about the storage of the holder 52 is stored; for storage of the holder 52 is a rolling bearing 64 intended. By the rotation of 180 °, that of the cavity former 44 into the movable mold half 2 assigned half 41 the pre-cavity 4 protrudes, generated recess 71 turned so that this to the fixed mold half 3 associated part of the Vorspritzkavität 4 has. This allows the cavity 71 with a second component without gating on the movable mold half 2 to have to provide. As a result, the multi-component injection molding tool according to the invention 1 be made cheaper than known multi-component injection molding tools, such as. Melting system, plasticizer, etc. only for the fixed mold half 3 must be provided. Also in operation, the tool according to the invention is cost-saving, since it, for example, manages with shorter set-up times and is easy to clean.

Subsequently, the index plate 5 about the turning axis W, here with the opening direction Ö of the mold halves 2 . 3 collapses, turned until the preform 7 so over the Fertigspritzkavität 4 ' is that he can be included in it. The drive of the index plate 5 takes place over the shaft 51 which is powered by an external drive.

The Umschwenkvorgang is in 7 shown, wherein the rotation angle of the index plate 5 180 °; if more than two spray stations are provided for spraying more than two components, this angle of rotation can be reduced according to the intended pitch, but this is not shown figuratively. The second component is in the Fertigspritzkavität 4 ' via the melt timing system and the assigned spray nozzle 43 ' fed, the so at the Fertigspritzkavität 4 ' is arranged that the second molten injection material directly into the recess 71 of the preform 7 can be sprayed.

With the multi-component injection molding tool according to the invention 1 Of course, hollow solid bodies can not be made. A preferred development of the tool 1 for spraying such a solid body is in the relevant process steps in the 8th to 14 shown.

The tool 1 is essentially constructed as the tool for injection molding of hollow bodies, which in the 1 to 7 is shown. The holding device 52 ' at the index plate 5 However, this is not a core component but a holding device 52 , which is intended to be on an outer surface of the pre-molded part 7 or finished injection 7 ' attack and not from the inside. The holding device 52 ' has a recess 53 which in a closed state of the tooling 4 and the Fertigspritzkavität 4 ' with forms or supplements. The pre-cavity 4 So is through the mold insert 45 the movable mold half 2 , the mold insert 46 the fixed mold half 3 and the recess 53 the holding device 52 ' educated. When spraying the preform 7 in the pre-cavity 4 the molten injection molding material removably bonds with the recess 53 the holding device 52 so that the preform when converting the index plate 5 can be taken. Or with the additional support of a separate, sliding support element.

To remove the mold from the movable mold half 2 assigned part 41 . 41 ' the preforming 4 or Fertigspritzkavität 4 ' to simplify, has the tool 1 not just an ejector device 8th on the holding device 52 ' but each one ejector device 8th' in the movable mold half 2 assigned part 41 . 41 ' the preforming 4 or Fertigspritzkavität 4 ' each with an ejector pin 83 when disengaging the index plate 5 is extended with what is in 10 is shown. This will ensure that the component 7 . 7 ' when disengaging the index plate 5 not damaged.

In the 11 and 12 is shown as a Fertigspritzling 7 ' from the holding device 52 is stripped off. This is on the holding device 52 an ejector device 8th with an ejector pin 82 arranged for stripping the Fertigspritzlings 7 ' is extended as shown so that the Fertigspritzling 7 ' can fall down, for example. On a conveyor belt or container.

The essential for the invention process step is in 13 shown: The preform 7 has an outside, through the cavity former 44 generated recess 71 into which the second injection molding material is to be injected. The spray nozzle 43 ' the finished injection cavity 4 ' but is located on the fixed mold half 3 while the cavity former 44 on the movable mold half 2 is present. Therefore, the holding device 52 before or during the swirling of the index plate 5 rotated through an angle of 180 ° about its longitudinal axis L, so that the recess 71 to the movable mold half 3 has. In the figures, the rotation of the holding device 52 executed around its longitudinal axis L before the index plate 5 is pivoted by rotation about the pivot axis W (see 14 ). In principle, the rotation of the holding device 52 about its longitudinal axis L but also during or after the pivoting of the index plate 5 done, but always before the index plate 5 ,

LIST OF REFERENCE NUMBERS

1

Multi-component injection molding

2

Mobile mold half

3

Fixed mold half

4

First mold cavity, pre-cavity

4 '

Second mold cavity, further injection cavity

41, 41 '

First part of the mold cavities

42, 42 '

Second part of the mold cavities

43, 43 '

spray nozzles

44

Mold core, cavity former

45, 45 '

Mold inserts of the movable mold half

45, 46 '

Mold inserts of the fixed mold half

5

Index plate

51

wave

52

holder

52 '

holder

53

The mold cavity complementary recess

6

driving device

61

output gear

62

Toothed drive element

63

engine

64

roller bearing

7

Preform

7 '

Finished molded part

71

Cavity of the preform

71 '

Filled cavity

8, 8 '

stripping

81

stripper

82

ejector

83

ejector

L

Longitudinal axis of the holding device

Ö

Opening direction of the tool

W

turning axis

Claims (14)

Multi-component injection molding tool ( 1 ), - with two halves which can be moved apart and back together ( 2 . 3 ), between which at least two mold cavities ( 4 . 4 ' ), wherein a first mold cavity ( 4 ) a Vorsitzkavität ( 4 ) and a second mold cavity ( 4 ' ) a further injection cavity ( 4 ' ), and - with a disengageable and swiveling index plate ( 5 ) between the mold halves ( 2 . 3 ) is arranged on the at least one holding device ( 52 ) is present, with a pre-molded part ( 7 ) from the pre-cavity ( 4 ) into the next cavity ( 4 ' ) is implementable, characterized in that on the index plate ( 5 ) a drive device ( 6 ) is arranged with the holding device ( 52 ) is operatively coupled and is adapted to the holding device ( 52 ) during the transfer of the pre-molded part ( 7 ) about its longitudinal axis (L) to rotate. Multi-component injection molding tool ( 1 ) according to claim 1, characterized in that one of the mold halves ( 2 . 3 ) a fixed mold half ( 3 ) and that only on the fixed mold half ( 3 ) at least one spray nozzle ( 43 . 43 ' ) for injecting an injection molding material for each mold cavity ( 4 ) is present. Multi-component injection molding tool ( 1 ) according to claim 1 or 2, characterized in that a portion of the holding device ( 52 ) in a closed tool condition in the mold cavities ( 4 . 4 ' ) and forms an index core. Multi-component injection molding tool ( 1 ) according to claim 1 or 2, characterized in that a portion of the holding device ( 52 ' ) in a closed tool condition in the mold cavities ( 4 . 4 ' ) and one the mold cavity ( 4 . 4 ' ) complementary recess ( 53 ) having. Multi-component injection molding tool ( 1 ) according to at least one of claims 2 to 4, characterized in that - the mold cavities ( 4 . 4 ' ) in each case shaped mold cavities ( 4 . 4 ' ), with a first part ( 41 . 41 ' ) of the mold cavities ( 4 . 4 ' ) in the moving Mold half ( 2 ) and a second part ( 42 . 42 ' ) in the fixed mold half ( 3 ), where preferably the first parts ( 41 . 41 ' ) and second parts ( 42 . 42 ' ) of the mold cavities ( 4 . 4 ' ) are formed asymmetrically. Multi-component injection molding tool ( 1 ) according to claim 5, characterized in that - at least the movable mold half ( 2 ) a mold core as a cavity former ( 44 ), more preferably a pin or core ( 44 ) or section, at least partly in the first part ( 41 ) of the pre-cavity ( 4 ), - wherein the holding device ( 52 ) when swiveling the index plate ( 5 ) is preferably rotatable so far that one of the cavity former ( 44 ) generated cavity ( 71 ) of the preform ( 7 ) to the spray nozzle ( 43 ' ) of the further injection cavity ( 4 ' ) in the fixed mold half ( 3 ). Multi-component injection molding tool ( 1 ) according to at least one of claims 1 to 6, characterized in that the multi-component injection molding tool ( 1 ) is a multiple tool, preferably on the index plate ( 5 ) at least two mutually remote holding devices ( 52 ), preferably two opposing rows of holding devices ( 52 ), wherein in each case one of the mutually remote holding devices ( 52 ) in an associated Vorspritzkavität ( 4 ) and another in an associated Fertigspritzkavität ( 4 ' ). Multi-component injection molding tool ( 1 ) according to at least one of claims 1 to 7, characterized in that the drive device ( 6 ) - a gear transmission ( 61 . 62 ), wherein preferably with the holding device ( 52 ) rotationally fixed an output gear ( 61 ) connected to a drive tooth element ( 62 ) in the index plate ( 5 ) is engaged, wherein particularly preferably the drive tooth element ( 62 ) a rack or gear ( 62 ) and / or - at least one engine ( 63 ), preferably an electric motor, compressed air motor or hydraulic motor, the drive tooth element ( 62 ) and particularly preferably in the index plate ( 5 ) is arranged. Multi-component injection molding tool ( 1 ) according to at least one of claims 1 to 8, characterized in that - the longitudinal axis (L) of the holding device ( 52 ) normal to a turning axis (W) of the index plate ( 5 ) and / or - the turning axis (W) parallel or normal to an opening direction (Ö) of the mold halves ( 2 . 3 ) is aligned. Multi-component injection molding tool ( 1 ) according to at least one of claims 1 to 9, characterized in that the Vorspritzkavität ( 4 ) and the Fertigspritzkavität ( 4 ' ) are offset by an angle of 90 ° to 180 ° with respect to the turning axis (W). Multi-component injection molding tool ( 1 ) according to at least one of claims 1 to 10, characterized in that - on the index plate ( 5 ) for each of the holding devices ( 52 ) an ejector or stripping device ( 8th ) is provided which preferably in the longitudinal direction (L) of the holding device ( 52 ) movable stripper plate ( 81 ) or at least one ejector pin ( 82 ) and / or - that on the movable mold half ( 2 ) an ejector or stripping device ( 8th' ) is provided which preferably at least one ejector pin ( 83 ), which in a triggering state at least partially in the first of the movable mold half ( 2 ) associated part ( 41 . 41 ' ) at least one mold cavity ( 4 . 4 ' ). Method for injection molding using a multi-component injection molding tool ( 1 ) according to at least one of claims 1 to 11, comprising the steps of: a) injecting a first molten injection-molding material into the pre-cavity ( 4 ), thereby obtaining a preform ( 7 ), b) opening the mold halves ( 2 . 3 ) and disengaging the index plate ( 5 ), c) turning the holding device ( 52 ), before or during the swirling of the index plate ( 5 ) by means of the drive device ( 6 ) by a predetermined angular amount about the longitudinal axis (L) of the holding device ( 52 ) with the pre-molded part ( 7 ), d) indentation of the index plate ( 5 ), thereby receiving the holding device ( 52 ) with the pre-molded part ( 7 ) in the finished injection cavity ( 4 ' e) injecting a second molten spray material into the finished injection cavity ( 4 ' ), Obtaining a finished syringe ( 7 ' ), f) stripping the finished syringe ( 7 ' ) of the holding device ( 52 ). The method of claim 12, wherein in step a) through the cavity former ( 44 ) of the movable mold half ( 2 ) a cavity ( 71 ) of the preform ( 7 ) is produced and the preform ( 7 ) in step c) is rotated so far about its longitudinal axis (L) that the cavity ( 71 ) to the injection nozzle ( 43 ' ) the Fertigspritzkavität ( 4 ' ) in the fixed mold half ( 3 ). The method of claim 12 or 13, wherein the multi-component injection molding tool ( 1 ) is a multiple tool attached to the index plate ( 5 ) at least two holding devices facing away from each other ( 52 ) and in step c) when swiveling the index plate ( 5 ) each have a holding device ( 52 ) from which a finished injection molding ( 7 ' ), to the pre-cavity ( 4 ) is rotated and in step d) in the Vorspritzkavität ( 4 ) is recorded.

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