METHOD FOR ROTATING A ROTATING PART

Description

[0001] The present invention lies in the field of tools and machines for processing plastics and other plasticizable materials, in particular in the field of injection molding machines. The invention relates to a method for rotating at least one part about at least one rotational axis according to the preamble of claim 1, a machine according to the preamble of claim 12, and a computer program product according to the preamble of claim 13.

[0002] When reference is made to a "molded part" in this application, it refers to an injection-molded part partially or completely molded and produced in a mold cavity or molding tool of a machine for processing plastics and other plasticizable materials, or an injection-molded part molded or produced in this way. These terms can be used synonymously.

[0003] Machines for processing plastics and other plasticizable materials are known from the prior art, which have one or more rotatable parts, e.g. a central part, a cube, a tool or a cube tool, which are used to produce molded parts. Systems for the optimized operation of a cube tool on injection molding machines are known, for example. Cube tools usually consist of three tool segments, a first segment, which has, for example, a tool mold attached to a movable tool plate, a second segment, which has a tool mold attached to a fixed tool plate, and a third segment or the rotatable part, e.g. a cube, which has a square in plan view (hence the name cube tool) and a vertical axis of rotation at the intersection point of the diagonals in the plan view. The first segment can, for example, be moved with the movable tool plate along a linear axis.The third segment or cube is mounted so that it can rotate and can be attached to a translation table. The translation table can be moved linearly along an axis. The two linear movements of the movable tool plate and the translation table are usually parallel to each other. The cube can, for example, be rotated in four steps of 90° into positions A, B, C and D. For example, cube surface A points towards the second segment. After rotating twice (a total of 180°), this cube surface A then points towards the first segment. Alternatively, the cube can also be rotated 180°, in which case the cube is equipped with cavities on only two sides. In special cases, the cube can be cut again in the horizontal plane into an upper and a lower half, which can be rotated separately using two drives. This means that the upper and lower halves of the cube can also rotate in different directions.

[0004] The function of the tool travel movements is described below using an ongoing process as an example. The tool is in the closed position, i.e. the cube forms a mold cavity 2A with cube surface A and the second segment (fixed tool plate). On the opposite side, cube surface C forms a mold cavity 1C with the first segment (movable tool plate). Usually, a plasticizable melt is injected simultaneously into the two mold cavities 2A and 1C via two injection units. The force applied via the movable platen forms the clamping force on the tool. Once the molded parts are ready to be demolded, the first segment opens with the movable tool plate. After a preset delay time, the sliding table moves with the rotation axis of the cube segment to a position where the cube can be rotated without collision. The cube can now rotate by at least 90°.Rotation is usually done either in one direction or alternately.

[0005] US 2005 / 0142244 A1 discloses an injection molding machine with a cooling device configured as a rotatable cooling tower and a rotatable mold. Material is injected into the mold, which then rotates into a position where cooling tubes of the cooling device can move into the preforms. The preforms are cooled and pressurized. The mold then rotates again, and the treated preforms are ejected. The cooling device is mounted on linear guides, allowing movement parallel to the linear guides. After injection, the mold is opened wide enough to clear the rotation arc of the mold cores. The molded parts are cooled by a fan of the cooling device, after which the cooling device is also opened wide enough to allow sufficient clearance for the cooling tubes to rotate.Overall, the tool is opened wide enough to allow rotation of the tool or cooling device without causing a collision.

[0006] CH 707 711 A2 discloses a holding device for a rotatable mold center part in an injection molding machine. A plate rotatable about a rotational axis and driven by a motor serves to hold the rotatable mold center part. The holding device comprises a lower cross member, which is supported on a machine bed of the injection molding machine via first bearing blocks and mounted on guide rails for longitudinal displacement. Furthermore, the holding device comprises second bearing blocks, by means of which the lower cross member is supported in the circumferential direction relative to the lower tie bars of the injection molding machine.

[0007] WO 2019 / 029984 A1 discloses an assembly device for mold parts of an injection molding tool, wherein the tool is mounted on a mounting plate which can be inserted into the injection molding machine and removed from it again as needed, wherein a translational displacement of the mounting plate can be carried out via a guide system.

[0008] From EP 2 266 773 A2, EP 0 895 848 A1, and US 2012 / 087999 A1, it is known to prevent collisions between the mold clamping platens and rotating parts. Rotation occurs when there is sufficient distance between the mold clamping platen and the rotating part. The mold part height is neither mentioned nor taken into account.

[0009] Based on this prior art, the present invention is based on the object of providing a method for rotating a rotatable part about at least one axis of rotation of a machine for processing plastics and other plasticizable materials, in particular an injection molding machine, which method optimizes the movements of the machine, in particular the tool movements, and saves cycle time, while still operating safely, gently and with low wear.

[0010] This object is achieved by a method for rotating a rotatable part of a machine for processing plastics and other plasticizable masses, in particular an injection molding machine, having the features of claim 1, a machine having the features of claim 12, and by a computer program product having the features of claim 13.

[0011] Advantageous further developments are the subject of the dependent patent claims. The features listed individually in the patent claims can be combined with one another in a technologically expedient manner and can be supplemented by explanatory facts from the description and details from the figures, thereby demonstrating further embodiments of the invention.

[0012] In a method for rotating a rotatable part, such as a central part, a cube, a tool or a cube tool, about at least one axis of rotation of a machine for processing plastics and other plasticizable masses, in particular an injection molding machine with at least one movable segment, e.g. a movable mold clamping plate, a movable tool plate, a movable mold segment or a movable tool segment for producing at least one molded part, the movement of the at least one segment is at least partially superimposed on the movement of the rotatable part, wherein the movement of the rotatable part is started when the distance between the at least one segment and the rotatable part is greater than a molded part height of a molded part to be produced on the machine. The molded part height corresponds to the dimension by which the preferably completely demolded molded part protrudes from the rotatable part.This advantageously results in time savings in terms of cycle time, while still ensuring safety with regard to a collision of the part.

[0013] The rotatable part, e.g., a centerpiece, a die, a tool, or a die tool, is intended, constructed, and configured to rotate and / or turn. Furthermore, the rotatable part can also perform any combination of a rotary motion, a rotational motion, a linear motion, and / or a translational motion. For example, the rotary motion or rotational motion of the rotatable part can be counterclockwise and / or clockwise, and the linear motion and / or translational motion of the rotatable part can be horizontal and / or vertical.

[0014] Preferably, the movement of the rotatable part is a rotary movement and / or a rotational movement. Further preferably, the movement of the rotatable part can also be any combination of a rotary movement, a rotational movement, a linear movement, and / or a translational movement.

[0015] In order to advantageously further optimize the cycle time, the rotatable part is attached to and / or on a movable table, e.g. a translation table, and the movement of the table is at least partially superimposed on the movement of the at least one segment and / or the movement of the rotatable part. The movements of the table, the segment and / or the part are thus carried out at least partially simultaneously. There is no wait until the segment has reached its target position, for example, before the rotatable part is moved, but rather the rotatable part begins its movement while the movement of the at least one segment is at least partially still in progress. For example, the part carries out its movement and / or begins its movement with simultaneous movement of the table and / or the segment. The movement of the table preferably takes place linearly along an axis.For example, the movement of the table can be realized via a piston system, servo-hydraulically and / or servo-electrically, via racks and spindles, or a direct drive. More preferably, the movements of the table and the segment can be substantially parallel to each other. The movement of at least one segment runs, for example, in the same direction as the movement of the table. It is also conceivable that, for example, with two movable segments, which are designed, for example, as movable plates, the table remains stationary.

[0016] In addition, the movements of the at least one segment, the table and / or the rotatable part are at least partially coupled to one another. For example, the movement of the at least one segment can be coupled to the rotatable part, the movement of the at least one segment can be coupled to the table, the movement of the table can be coupled to the rotatable part, or the movement of the at least one segment can be coupled to the table and the rotatable part. The movements of the segment, the table and / or the part are thus dependent on one another. Advantageously, this eliminates any delay times and the cycle time is shortened in line with the programmed speed. Another advantage is that the tool can be operated safely. If, for example, the speed of the linear movement is changed during the process, the remaining axis movements are automatically adapted to this change.Even a slow approach of the tool to check the processes is advantageously possible without any problems. For example, the movement of the table is preferably coupled to the movement of the segment until a superimposed braking function intervenes and decelerates the table to its final position for the corresponding work step. Furthermore, the coupled movement preferably causes the table and / or the rotating part to move away from the segment and, if necessary, also from another segment, e.g., a fixed or another movable tool plate. The increasing distance is then preferably identical on both sides.

[0017] Preferably, the movement of at least one segment occurs along a linear axis. For example, the movable tool plate can be connected via a toggle lever drive system, e.g., a drive spindle with a servo-electric drive, or a piston with a drive, e.g., a servo-hydraulic drive.

[0018] In principle, it is also conceivable to provide additional segments, e.g., two segments, of which at least one segment is movable, such as a movable tool plate. For example, in the case of two segments, one segment can be designed as a movable tool plate and one segment as a stationary tool plate. It is also possible for two segments to be movable, with both segments being designed, for example, as movable plates.

[0019] In order to advantageously avoid a collision of the table with the at least one segment, the movement of the table is preferably multiplied by a factor less than or equal to one, preferably a factor of 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 or 1.0, compared to the movement of the at least one segment. Preferably, the table experiences a change in position as a result of its movement, which is multiplied by a factor less than or equal to one, preferably a factor of 0.5. The table preferably moves more slowly than the segment, so that the part attached to the table effectively moves away from the segment, e.g. a movable tool plate, and optionally from another segment, e.g. from another movable or stationary tool plate.

[0020] The coupling of the movement of the at least one segment, the movable table and / or the rotatable part is preferably carried out electrically and / or mechanically. For example, the movement of the at least one segment could be coupled to the movement of the table and the rotatable part via a mechanical shaft. An electrical coupling is also conceivable, for example via a controller which recognizes the respective positions of the at least one segment, the table and / or the rotatable part and coordinates and / or controls them accordingly. A mixed coupling is also possible, in which, for example, the coupling between the at least one segment and the table is carried out mechanically, for example by means of a rack and pinion, and the further coupling with regard to the rotatable part is carried out electronically.

[0021] To advantageously achieve precise and reliable movement, the movement of the at least one segment, the rotatable part, and / or the table is preferably position-controlled. For example, the position control can be implemented using a servo-electric and / or servo-hydraulic drive, e.g., a direct drive or a piston system. For example, to advantageously open and rotate the cube mold, the movable mold plate is moved first during opening. In this case, the position control cyclically specifies the next position to be approached as a setpoint. This setpoint is, for example, that of the linear tool position.

[0022] In general, there is no linear relationship between a drive, e.g. a motor rotation angle, and a corresponding movement of the at least one segment, the part and / or the table. In order to advantageously realize the most efficient and rapid tool movement possible, the movement of the at least one segment, the rotatable part and / or the table is preferably linked to a mathematical function for position control. The mathematical function preferably takes into account the kinematics of the corresponding drive and / or the corresponding drives. For example, in the case of a servo-electric drive, the motor rotation angle and the linear movement of the movable tool plate are not linearly related. In order to advantageously realize the most efficient movement possible, the desired form of movement is preferably linked to the kinematics of the drive by means of a mathematical function.

[0023] Preferably, the movement of the rotatable part is position-controlled in at least one angular position around the rotational axis along a rotational collision curve, whereby the movement advantageously occurs as smoothly as possible, yet with maximum acceleration and subsequent deceleration, in accordance with the programmed speed. Further preferably, the movement of the rotatable part via the rotational collision curve is rigidly coupled to the position control of the table and thus, at a second level, to the position control of the segment, e.g., the movable tool plate. For example, the rotational collision curve can be used to check whether rotation of the rotatable part is possible, thereby advantageously increasing safety.

[0024] To advantageously realize the most efficient and rapid tool movement possible, the rotational collision curve is preferably dependent on at least one parameter of the part, e.g., the edge length of the rotatable part and / or the mold height of the molded part. The rotational collision curve of a cube tool is preferably described by a mathematical function that is dependent, for example, on the edge length of the cube tool and / or the mold height.

[0025] Preferably, at least one parameter of the rotatable part, e.g., the edge length of the rotatable part and / or the molded part height, can be input and / or taught. For example, the parameters can be input into the control system and / or read from the machine. However, it is also possible for the parameters to be automatically transmitted to the control system based on the rotatable part used. It is also possible for the rotatable part to contain the parameters and for the parameters to be transferred to the machine and / or control system when the rotatable part is installed in the machine. In this example, if the parameters for the edge length of the cube mold and the molded part height are correctly parameterized and the mold with its segments and the rotatable part have been "zeroed" in the closed mold, a collision can advantageously be avoided. This safety is advantageously provided in both automatic and manual mode.

[0026] Preferably, the movement of at least one peripheral system, e.g., a robotic system and / or a gripper, is at least partially coupled with the movements of the at least one segment, the table, and / or the rotatable part. This advantageously avoids delays and shortens the cycle time. For example, by integrating the control system of a robotic system, the movement sequences of the robotic system can also be coupled with the movements of the table and the movement of the rotatable part.

[0027] The problem is also solved by a machine for processing plastics and other plasticizable materials, in particular an injection molding machine. To advantageously optimize the machine's movements, particularly the tool movements, and to save cycle time while still operating safely, gently, and with low wear, the machine is configured, designed, and / or constructed to perform the process described above.

[0028] The problem is also solved by a computer program product. For advantageous optimization with regard to the machine movements, in particular the tool movements, and to save cycle time while still ensuring safe, gentle, and low-wear operation, the computer program product is stored on a computer-readable medium with a program code for implementing the method described above.

[0029] Further advantages emerge from the dependent claims and the following description of a preferred embodiment. The features listed individually in the claims can be combined with one another in a technologically expedient manner and can be supplemented by explanatory facts from the description and details from the figures, whereby further embodiments of the invention are shown.

[0030] The invention will be explained in more detail below using an exemplary embodiment illustrated in the accompanying figures. They show: Fig. 1 - 5 schematic representations of different movements and positions of the rotatable part during a rotation of 90°, Fig. 6 - 10 schematic representations of different movements and positions of the rotatable part during a rotation of 90°, Fig. 11, 12 diagrams.

[0031] The invention will now be explained in more detail by way of example with reference to the accompanying drawings. However, these embodiments are merely examples and are not intended to limit the inventive concept to a specific arrangement.

[0032] Before describing the invention in detail, it should be noted that it is not limited to the specific components of the device and the specific method steps, as these components and methods may vary. The terms used herein are intended solely to describe particular embodiments and are not intended to be limiting. Furthermore, when the singular or indefinite articles are used in the description or claims, this also refers to the plural of these elements, unless the overall context clearly indicates otherwise.

[0033] In a first embodiment according to the Fig. 1 - 5 a machine 10 for processing plastics and other plasticizable masses, e.g. an injection molding machine with two injection units 12 and two segments 14, preferably movable segments 14, which e.g. each represent a movable tool plate, for the production of at least one molded part is shown. In principle, in a further exemplary embodiment it is also conceivable that only one movable segment 14 and / or only one injection unit 12 is provided. It is also possible in a further exemplary embodiment for two segments 14 to be provided, with one segment 14 being designed as a movable tool plate and one segment 14 as a stationary tool plate, for example. A part 16 which is rotatable about at least one axis of rotation 18, e.g. a cube tool, is arranged between the segments 14. In the exemplary embodiment, the rotatable part 16 is attached to and / or on a table 30.

[0034] In Fig. 1 The rotatable part 16, e.g., the cube mold, is in a closed state. For example, in this state, melt can be injected into the mold through the injection units 12. Once the injection process is complete and / or the molded parts are ready to be removed from the mold, the cube mold can be rotated through an angle, e.g., 90°, 180°, 270°, or 360°. In principle, the rotatable part 16 can be rotated through any angle.

[0035] In Fig. 2 The segments 14 are each moved in a direction 20, 22. Preferably, the movements occur in opposite directions 20, 22, e.g., to the left and right. If, in a further embodiment, there is only one movable segment 14, the movement can, in principle, occur in any direction 20, 22, e.g., to the left or right. Preferably, the movements occur in such a way that the rotatable part 16 is transferred into an open state.

[0036] In Fig. 3 the movement of the segments 14 is not yet complete, but the movement of the rotatable part 16 in a direction 24, e.g., a clockwise rotation, has already begun. The movement of the segments 14 is therefore at least partially superimposed on the movement of the rotatable part 16. The rotatable part 16 is already executing its movement while the movement of at least one segment 14 is still ongoing. This advantageously results in optimization with regard to the machine movements, in particular the tool movements, and a saving in cycle time, as well as a safe, gentle, and low-wear operation.

[0037] In Fig. 4 the segments 14 move further in the directions 20, 22 and the rotatable part 16 moves further in the direction 24 and rotates.

[0038] In Fig. 5 the movements of the segments 14 and the rotating part 16 are completed. The rotating part 16 is in Fig. 5 by 90° compared to the position in Fig. 1 rotated. In principle, any rotation around any axis and / or angle is possible, e.g., 90°, 180°, 270°, 360°, -90°, -180°, -270°, or -360°. Alternating operation is also possible.

[0039] In a further embodiment according to the Fig. 6 - 10 a machine 10 for processing plastics and other plasticizable masses, e.g. an injection molding machine with two injection units 12 and two movable segments 14, each of which represents a movable tool plate, for example, for the production of at least one molded part is shown. In principle, in a further exemplary embodiment, it is also conceivable for only one movable segment 14 and / or only one injection unit 12 to be provided. It is also possible in a further exemplary embodiment for two segments 14 to be provided, with one segment 14 being designed as a movable tool plate and one segment 14 as a stationary tool plate, for example. A part 16 which is rotatable about at least one axis of rotation 18, e.g. a cube tool, which is attached to and / or on a table 30, e.g. a sliding table, is arranged between the segments 14.

[0040] In Fig. 6 The rotatable part 16, e.g., a cube mold, is in a closed state. For example, in this state, melt can be injected into the mold by the injection units 12.

[0041] In Fig. 7 The segments 14 are each moved in a direction 20, 22. Preferably, the movements occur in opposite directions 20, 22, e.g., to the left and right. If, in a further embodiment, there is only one movable segment 14, the movement can in principle occur in any direction 20, 22, e.g., to the left or right. Fig. 2 differs Fig. 7 in that the table 30 is also moved in a direction 32, which is preferably parallel to at least one of the directions 20, 22 of the segment 14, e.g. to the left or right. In Fig. 7 The movement of the segments 14 is at least partially superimposed on the movement of the table 30. In principle, however, it is also conceivable in another embodiment that the segments 14 move and the table does not move or remains stationary.

[0042] In Fig. 8 In addition to the movement of the segments 14 and the table 30, the movement of the rotating part 16 in a direction 24, e.g. a clockwise rotation, is also used. Fig. 8 the movement of the segments 14 and / or the movement of the rotatable part 16 is at least partially superimposed on the movement of the table 30.

[0043] In Fig. 9 the segments 14 move further in the directions 20, 22, the table in the direction 32, e.g. to the left or right and the rotatable part 16 moves in the direction 24, e.g. clockwise.

[0044] In Fig. 10 the movements of the segments 14, the table 30 and the rotating part 16 are completed. The rotating part 16 is in Fig. 10 by 90° compared to the position in Fig. 6 rotated. In principle, any rotation around any axis and / or angle is possible, e.g., 90°, 180°, 270°, or 360°.

[0045] In the exemplary embodiment, the movements of the at least one segment 14, the table 30, and / or the rotatable part 16 are at least partially coupled to one another. The movements are thus preferably dependent on one another. For example, it is conceivable to start the movement of the table 30 only after a certain movement time of the segment 14 and / or as soon as the segment 14 has reached a certain position. It is also conceivable for the movement of the rotatable part 16 to start only when the table 30 and / or the segment 14 have reached a certain position and / or have moved for a certain time.

[0046] In a further preferred embodiment, the coupling can also be staggered. For example, the system first waits until the segment 14 has reached a specific position and / or has been moved for a specific time. Then, the movement of the table 30 is started. To start the movement of the rotatable part 16, it then also waits until the segment 14 and / or the table 30 have reached a specific position and / or have been moved for a specific time. In a further preferred embodiment, the movement of the table 30 is coupled to the movement of the segment 14 until a superimposed braking function intervenes and brakes the table 30 to its final position for this work step.

[0047] In a further preferred embodiment, the movement of the table 30 is multiplied by a factor less than or equal to one, preferably a factor of 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 or 1.0, compared to the movement of the at least one segment 14. For example, the segment 14 and the table 30 start their movement simultaneously, e.g., to the left in direction 20. However, the movement of the table is multiplied by a factor less than or equal to one, so that the change in position of the table 30 is less than the change in position of the segment 14. Advantageously, the table 30 and thus the rotatable part 16 follow the segment 14 without, however, being able to collide. Thus, during this movement, the rotatable part 16 moves away from the segment 14. If, for example, two segments 14 are provided in a further embodiment, the rotatable part 16 moves away from both segments 14.Preferably, the increasing distance is identical on both sides.

[0048] In a further preferred embodiment, the coupling is carried out electrically and / or mechanically. For example, it is conceivable to couple the segment 14, the table 30 and / or the rotatable part 16 with a mechanical shaft, which advantageously results in increased reliability with regard to the movement processes. With an electrical coupling, for example, the positions of the segment 14, the table 30 and the rotatable part 16 can be detected. The respective movements then take place at a correspondingly predetermined position, so that a simple and quick coupling can be carried out, particularly when the rotatable part 16 is replaced. A mixed coupling is also conceivable. For example, the segment 14 could be coupled to the table 30 by means of a mechanical coupling, e.g. a toothed rack, and the coupling to the rotatable part 16 could be made electrically.

[0049] In Fig. 11 A diagram 34 is shown for a further exemplary embodiment, wherein an axis 36, for example the distance in meters, is plotted against a further axis 38, for example the time in seconds. A curve 48 describes the position and / or the distance traveled by the at least one segment 14 at a specific time. For example, the distance corresponds to a value of approximately -0.45 after approximately 1.3 seconds. The values ​​of the axes 36, 38 are merely examples. A curve 44 describes the translational movement of the rotatable part 16 due to the movement of the movable table 30. One can see there, for example, a factor of approximately 0.5 between the movement of the movable table 30 or the curve 44 and the at least one segment 14 or the curve 48. A curve 42 describes the movement of the rotatable part 16, for example along the X coordinate. In a curve 46, the superimposed movement of the rotatable part 16 with the movable table 30 along, for example, the X coordinate is shown.Curve 46 is obtained by summing curves 44 and 42. It can be seen that initially only the movable table 30 moves until, at approximately 0.85 seconds, the movement of the rotatable part 16 along the X coordinate begins. The rotatable part 16 leads to . Fig. 11 It only stops moving when the gap between the rotating part 16 and the segment 14 is large enough that the rotating part 16 fits into the gap and does not collide, even in the worst case scenario, e.g., a 45° rotation. The same applies, for example, to the movement of the rotating part along another coordinate, e.g., the Y or Z coordinate.

[0050] In another embodiment in Fig. 12 the movement of the rotating part 16 begins in contrast to Fig. 11 after only about 0.75 seconds, which advantageously results in a shorter cycle time. For example, the time according to curve 42 for the movement of the rotating part in Fig. 12 less than 1.4 seconds, while the time in Fig. 11 is greater than 1.4 seconds. Since the remaining parameters are Fig. 12 , e.g. movement and / or rotation speeds, the parameters in Fig. 11 correspond, takes place in Fig. 12 The movement of the rotatable part 16 at a time when the gap between the rotatable part 16 and the segment 14 is not yet large enough to prevent a collision in the worst case scenario, e.g., during a rotation of 45°. The collision is preferably prevented by the segment 14 continuing to move during the movement of the rotatable part 16, thus increasing the gap between the rotatable part 16 and the segment 14, so that the gap is large enough when the worst case scenario is reached.

[0051] In the exemplary embodiment, the movement of the rotatable part 16, e.g., a rotation, is only initiated when the distance between the segment 14 and the rotatable part 16 is greater than a molded part height 29. The molded part height 29 corresponds to the dimension by which the preferably completely demolded molded part protrudes from the rotatable part 16. If, for example, with two segments 14 on both sides, the molded part height 29 is exceeded as a distance from the rotatable part 16, the movement of the rotatable part 16 is initiated. The rotatable part 16 begins to rotate while simultaneously moving the table 30 and / or the segments 14.

[0052] In a further preferred embodiment, the movement of the at least one segment 14, the part 16, and / or the table 30 is position-controlled. For example, the position control can be carried out using a servo-electric and / or servo-hydraulic drive, e.g., a direct drive or a piston system.

[0053] As a rule, there is no linear relationship between a drive, e.g. a motor rotation angle, and a corresponding movement of the at least one segment 14, the part 16 and / or the table 30. In a further preferred exemplary embodiment, the movements of the at least one segment 14, the part 16 and / or the table 30 are linked to a mathematical function for position control in order to advantageously realize the most efficient and rapid tool movement possible. In a further preferred exemplary embodiment, the mathematical function takes into account the kinematics of the corresponding drive. For example, in the case of a servo-electric drive, the motor rotation angle and the linear movement of the movable tool plate are not linearly related. In order to advantageously realize the most efficient movement possible, the desired form of movement is linked to the kinematics of the drive by means of a mathematical function.

[0054] In a further preferred embodiment, the movement of part 16 is position-controlled in at least one angular position about the rotational axis 18 along a rotational collision curve. For example, a mathematical function is stored that describes the diagonal of the cube tool along the rotational movement.

[0055] In a further preferred embodiment, the rotational collision curve depends on at least one parameter of the part, e.g. the edge length 28 of the rotatable part 16 and / or the molded part height 29.

[0056] In another preferred embodiment, the parameters edge length of the rotatable part and molded part height can be input and / or taught into the controller. Teaching advantageously results in increased safety, as collisions can thus be prevented.

[0057] The machine 10 frequently also has additional peripheral systems, e.g., a robotic system and / or a gripper, with which, for example, the molded parts are removed. In a further preferred exemplary embodiment, the movement of at least one peripheral system, e.g., a robotic system, is at least partially coupled with the movements of the at least one segment, the table, and / or the part. This avoids delays and further shortens the cycle time. For example, by integrating the control system of a robotic system, the movement sequences of the robotic system can also be coupled with the movements of the table 30 and / or the movement of the rotatable part 16.

[0058] A machine 10 for processing plastics and other plasticizable masses, in particular an injection molding machine, is disclosed in a further embodiment, which is arranged, designed and / or constructed to carry out at least one of the previously described methods while achieving the stated advantages.

[0059] A further embodiment forms a computer program product with a program code stored on a computer-readable medium for carrying out at least one of the methods described above while achieving the aforementioned advantages. Bezugszeichenliste

[0060] 10Machine 12Injection unit 14Segment 16Rotatable part 18Rotation axis 20Direction 22Direction 24Direction 28Edge length 29Mold height 30Movable table 32Direction 34Diagram 36Axis 38Axis 42Curve 44Curve 46Curve 48Curve

Claims

1. A method for rotating a rotatable part (16) about at least one axis of rotation (18) of a machine (10) for processing plastics and other plasticizable materials, in particular an injection molding machine, having at least one movable segment (14) for the manufacture of at least one molded part, wherein movement of the at least one segment (14) is at least partly overlapped by movement of the rotatable part (16), characterized in that the movement of the rotatable part (16) is started when the spacing between the at least one segment (14) and the rotatable part (16) is greater than a molded part height of a molded part that is to be manufactured on the machine (10), and the rotatable part (16) is mounted on and / or on top of a movable table (30), and movement of the table (30) is at least partly overlapped by the movement of the at least one segment (14) and / or the movement of the rotatable part (16) and the movements of the at least one segment (14), the movable table (30) and / or the rotatable part (16) are at least partly coupled to one another and that the movements of the segment (14), the movable table (30) and / or the rotatable part are dependent on each other.

2. The method as claimed in claim1, characterized in that movement of the movable table (30) in relation to movement of the at least one segment (14) is multiplied by a factor of less than or equal to one, preferably a factor of 0.5.

3. The method as claimed in claim 1 or 2, characterized in that the coupling is carried out electrically and / or mechanically.

4. The method as claimed in one of the preceding claims, characterized in that movement of the at least one segment (14), the rotatable part (16) and / or the movable table (30) is position-controlled.

5. The method as claimed in claim 4, characterized in that for position control the movement of the at least one segment (14), the rotatable part (16) and / or the movable table (30) is linked by at least one mathematical function.

6. The method as claimed in claim 4 or 5, characterized in that the movement of the rotatable part (16) in at least one angular position about the axis of rotation (18) is position-controlled along a rotational collision curve.

7. The method as claimed in claim 6, characterized in that the rotational collision curve is dependent on at least one parameter of the rotatable part (16).

8. The method as claimed in claim 7, characterized in that the at least one parameter of the rotatable part (16) is taught.

9. The method as claimed in one of the preceding claims, characterized in that the movement of at least one peripheral system is at least partly coupled to the movements of the at least one segment (14), the movable table (30) and / or the rotatable part (16).

10. A machine (10) for processing plastics and other plasticizable materials, in particular an injection molding machine, characterized in that the machine (10) takes a form, is configured and / or is set up to carry out the method as claimed in one of claims 1 to 9.

11. A computer program product with a program code that is stored on a computer-readable medium, for the purpose of carrying out the method as claimed in one of claims 1 to 9 with a machine (10) for processing plastics and other plasticisable materials, in particular an injection moulding machine.