Device for producing plastic pipes

Abstract

The device for producing corrugated plastic pipes comprises an extruder (1) with a die head (2), and a corrugator (3) with mold jaws (10) running in pairs. In order to form the pipe, the plastic melt tube is introduced into the molding section (55). In the region of the inner mold surface (200), the mold jaws are subjected to vacuum by a vacuum device (50) through vacuum channels, which are formed in a section of the mold jaws delimited by a parting surface (100) and cooperate with channel inlets on the outer side. In the section delimited by the rear side of the mold jaws, coolant channels (40) are formed which form a net-type and / or grid-type structure composed of sections connected to one another in a zigzag and / or serpentine.

Description

[0001] UNICOR GmbH,

[0002] Industriestraße 56, 97437 Hassfurt, DE

[0003] Device for manufacturing plastic pipes

[0004] The invention relates to a device for manufacturing plastic pipes, in particular corrugated plastic pipes.

[0005] The device comprises an extruder with a die head and a corrugator, into which a plastic melt tube is introduced via the die head to form the plastic tube.

[0006] In the corrugator, left and right forming jaws are guided by a motor in a continuous rotation of the left forming jaws and in a continuous rotation of the right forming jaws, in a rotating carriage of the left forming jaws and in a rotating carriage of the right forming jaws.

[0007] In a horizontal forming section, the left and right forming jaws are guided one behind the other in pairs as forming jaw pairs with a vertical parting plane, forming an axially extending, ring-shaped inner forming surface in the forming jaw pair in order to form the plastic tube in the forming jaw pairs along the forming section.

[0008] In a return of the left forming jaws and in a return of the right forming jaws, the forming jaws are each returned from the end of the forming section to the beginning of the forming section.

[0009] The forming jaws in the corrugator are cooled via a cooling device by continuously supplying liquid coolant to one or more coolant channels formed in the forming jaws.

[0010] The forming jaws, which run in pairs in the forming line, are subjected to a vacuum in the area of ​​the inner forming surface of the forming jaw pairs in the sense of extraction, by means of a vacuum device acting on the inner forming surface via vacuum channels formed in the forming jaws by interaction with channel inlets of the vacuum channels formed on the outside of the forming jaws.

[0011] From DE 17 04718 (Hegler) a device for producing corrugated plastic tubes is known. The forming jaws, guided in pairs in the horizontal forming section of the corrugator, are designed as left and right forming jaws. The forming jaw pairs have a vertical parting line. Vacuum channels are formed in the forming jaws, opening into the inner forming surface. As the forming jaws move along the forming section, vacuum is extracted from the vacuum channels on the side of each forming jaw, i.e., on one side of each forming jaw opposite the vertical parting line. During passage through the forming section, the extraction simultaneously cools the forming jaws.

[0012] A similar device with a corrugator is known from DE 298 10317 U1 (Lupke). However, this corrugator does not operate with left and right forming jaws, but rather with upper and lower forming jaws with a horizontal parting line. Vacuum channels are formed in the forming jaws, and these channels are evacuated via an external vacuum device as the forming jaws pass through the forming section. The vacuum channels of the upper forming jaws are connected to the vacuum channels of the lower forming jaws via controllable valves. The evacuation takes place on the upper outer surface of the forming jaws and / or on the lower outer surface of the forming jaws, i.e., opposite the horizontal parting line. The forming jaws are cooled by intermittently blowing cooling air into the vacuum channels as the pairs of forming jaws pass through the forming section.

[0013] DE 69601 509 B2 (Corelco) also describes a device with a corrugator. It describes embodiments with right and left forming jaws with a vertical parting line. Vacuum channels are formed in the forming jaws, the outer channel inlets of which are located on the upper side of the forming jaws and are extracted via a vacuum device during the forming process. This is a one-sided extraction system, operating only on the upper side of the forming jaws. The pairs of forming jaws guided in the forming process are cooled from below and laterally during operation. The specific method of this cooling is not described in detail.

[0014] The UC 210 corrugator marketed by the applicant Unicor GmbH uses left and right forming jaws. Vacuum extraction from the forming jaws in the forming line is performed on one side at the underside. The vacuum channels formed in the forming jaws are located in the lower half of the jaws and run parallel to the parting line. The forming jaws are cooled via coolant channels located in the rear section of the jaws.

[0015] DE 102019 126593 B4 describes a method for manufacturing forming jaws for use in a corrugator with left and right forming jaws. The body of each forming jaw incorporates a vacuum channel running from bottom to top, adjacent to a meandering cooling channel.

[0016] US 4718844 A describes a corrugator with right and left forming jaws, wherein vacuum channels are each designed as short vertical upper vacuum channels which open at their inner end into an annular channel enclosing the inner forming surface and have at their outer end on the top of a forming jaw an external channel inlet which is connected to a vacuum device for extraction.

[0017] US 5645871 A describes a corrugator with left and right forming jaws, featuring a lower short vacuum channel with an external channel inlet formed on the underside of the forming jaw, which is connected to a vacuum system for suction. Immediately adjacent to the suction channel inlet on the underside of the forming jaw is the inlet of the coolant channel of the cooling system, which is connected to the coolant supply.

[0018] The invention is based on the objective of further developing a device of the type mentioned at the outset in such a way that forming jaws are used in the device which are particularly advantageous in terms of manufacturing technology, in particular simple and / or cost-effective to produce, and / or that high-quality pipes can be produced with the device in a particularly advantageous, in particular simple and / or cost-effective way.

[0019] The invention solves this problem with the subject matter of main claim 1.

[0020] It is essential that the extension area of ​​the vacuum channels is formed in the section of the mold jaw that is bounded by the parting surface of the mold jaw. In connection with this, it is important that the coolant channel(s) is / are located in the rear section of the mold jaw that is bounded by the back of the mold jaw. This has the advantage that the vacuum channels and the coolant channel(s) do not need to overlap.

[0021] The vacuum channels formed in the mold jaws are specified in the characterizing portion of main claim 1 in alternative a for basic type A, in alternative b for basic type B, and in alternative c for basic type C. Alternative a provides upper short vacuum channels and lower short vacuum channels. Alternative b provides upper short vacuum channels and upper long vacuum channels. Alternative c provides lower short vacuum channels and lower long vacuum channels.

[0022] The design of these different vacuum channels is defined in main claim 1 at the end of the characterizing element.

[0023] The design and arrangement of the different vacuum channels is preferably such that the upper vacuum channels, i.e., the upper short vacuum channels and the upper long vacuum channels, each extend downwards from their outer channel inlet on the top side of the mold jaws towards the inner mold surface, and the lower vacuum channels, i.e., the lower short vacuum channels and the lower long vacuum channels, each extend upwards from their outer channel inlet on the underside of the mold jaws towards the inner mold surface. In preferred embodiments, the short upper and short lower vacuum channels are vertically oriented. In preferred embodiments, the long upper and long lower vacuum channels are only substantially vertically oriented, as they preferably extend at least partially along a section of the inner mold surface.

[0024] The design of the coolant channel(s) as a network- and / or grid-like structure consisting of zigzag and / or serpentine interconnected coolant channel sections enables dense penetration of the mold jaw by the coolant channel(s), thus facilitating particularly intensive cooling. The network- and / or grid-like structure can extend within a flat, preferably cuboid, or possibly plate-shaped space in the mold jaw. The network-like structure can be configured as a single layer. The grid-like structure can be configured as a multi-layered spatial structure.

[0025] In special embodiments of basic type A, i.e. embodiments according to alternative a) of main claim 1, the net- and / or grid-like structure of the coolant channel or coolant channels can form a flat cuboid spatial body, wherein the area facing the inner mold surface and / or the area adjacent to it of the net- and / or grid-like structure can be formed substantially complementary to the inner mold surface as an axial depression extending in the direction of the mold jaw axis.

[0026] In preferred embodiments of basic type B, i.e., embodiments according to alternative b) of main claim 1, the mesh- and / or grid-like structure of the coolant channel or channels can be configured such that, along its longitudinal extent, it only has the length of the upper long vacuum channels and covers them. In preferred embodiments, it can have a projecting foot section at its lower end that engages the lower end of the upper long vacuum channels.

[0027] Accordingly, in embodiments of basic type C, i.e. embodiments according to alternative c) of main claim 1, the net- and / or grid-like structure of the coolant channel or coolant channels may have a projecting head section at their upper end that overlaps the upper end of the lower long vacuum channels.

[0028] In basic type A, the mold jaw with its upper short vacuum channels and its lower short vacuum channels offers particular manufacturing advantages. Preferably, the upper short vacuum channels and the lower short vacuum channels are each formed very close to, and preferably parallel to, the parting line, i.e., running parallel to and close to the parting surface of the mold jaw. The inner opening of the upper short vacuum channels can be formed very close to the parting line, preferably adjacent to the parting surface, preferably on the circumference of the inner mold surface, preferably in the region from 12 o'clock to 1 o'clock. Similarly, the inner opening of the short lower vacuum channels can be formed very close to the parting surface on the circumference of the inner mold surface, preferably in the region from 5 o'clock to 6 o'clock.With these specially designed internal openings of the short vacuum channels, it becomes possible to optimize the material and strength of the pipe to be produced in the area of ​​the parting line of the forming jaws. Using forming jaws of basic type A, the device enables the production of particularly high-quality pipes.

[0029] In the versions of basic types B and C, there are advantages in terms of equipment compared to the versions of basic type A in pipe production due to the only one-sided extraction.

[0030] Regarding the inner opening of the channels into the inner mold surface, in preferred embodiments of basic type B, the inner opening of the upper short vacuum channels is the same as in basic type A, near the parting line, preferably in the region from 12 o'clock to 1 o'clock. This allows the same quality to be achieved in the upper circumference of the pipe to be produced as in embodiments of basic type A. The upper long vacuum channels can be designed such that their lower end opens into the lower region of the inner mold surface, and the upper long vacuum channels are guided along a section of the circumference of the inner mold surface, so that the extension area of ​​the upper short and upper long vacuum channels remains relatively narrow and the adjacent mesh-like and / or grid-like structure of the coolant channel(s) preferably only needs to be reduced slightly compared to basic type A.Additionally, a projecting foot section can extend beneath the lower end of the upper long vacuum channels. A corresponding design of the lower short vacuum channels and the lower long vacuum channels is possible in the versions of basic type C, optionally also with a projecting head section of the mesh- and / or grid-like structure of the coolant channel(s) that extends over the upper end of the lower long vacuum channels. Therefore, comparable results can be achieved in the production of the tube with versions of basic types B and C. Furthermore, versions of basic types B and C only require one-sided extraction, i.e., extraction from the top for basic type B and extraction from the bottom of the mold jaws for basic type C.

[0031] The design of the inner forming surface of the forming jaws determines the design of the cross-section of the tube to be produced. The inner forming surface can be circular, but also any non-circular shape, e.g., symmetrically or asymmetrically oval or polygonal.

[0032] The features of the characterizing portions of dependent claims 2 to 20 each relate to further specifications of features or groups of features of main claim 1 or of the claims relating back to main claim 1. These characterizing portions of the dependent claims can be combined with one another as desired. The characterizing portions of the dependent claims can each be implemented in embodiments according to the patent.

[0033] The characterizing features of subclaim 2 are specifications relating to the number and arrangement of the outer channel inlets of the vacuum channels in special embodiments of basic types A, B, and C. This enables a correspondingly adapted special design, e.g., a structurally simplified design of the vacuum device. The characterizing features of subclaim 3 are specifications relating to the number and arrangement of the inner inlets of the vacuum channels into the inner mold surface in special embodiments of basic types A, B, and C. This allows the effectiveness of the vacuum extraction from the inner mold surface to be specifically adjusted in certain areas. Uniform vacuum extraction can be achieved in all areas of the inner mold surface, particularly in critical areas, such as those near the parting line.

[0034] The distinguishing features of subclaim 4 are specifications relating to the long vacuum channels with a connecting opening extending through the parting surface in special embodiments of basic types B and C. This allows a ring closure of one or more of the vacuum channels of the left and right forming jaws to be realized.

[0035] The distinguishing features of subclaim 5 are specifications relating to the long vacuum channels with a further external channel inlet in embodiments of basic types B and C. This enables two-sided extraction in basic types B and C.

[0036] The distinguishing features of subclaim 6 are specifications relating to the vacuum channels with respect to relative length and / or linear or non-linear profile and / or relative channel diameter in embodiments of basic types A, B and C. The pressure drop in the vacuum channel can be influenced by this specification.

[0037] The distinguishing features of dependent claim 7 and dependent claim 8 are specifications relating to the common plane of extension of the vacuum channels, the series arrangement of the vacuum channels, and the assignment and planes of extension of the vacuum channels to the troughs of the inner mold surface, respectively, in embodiments of basic types A, B, and C. Embodiments in which the vacuum channels of one plane of extension open into each trough or crest of the inner mold surface are particularly advantageous.

[0038] The distinguishing features of subclaim 9 are specifications of the symmetry of the forming jaws, namely mirror symmetry with respect to a vertical longitudinal median plane of the forming jaw pairs, i.e. the vertical parting plane of the forming jaws, and mirror symmetry with respect to a horizontal transverse median plane of the forming jaws.

[0039] The distinguishing features of subclaim 10 are specifications of the forming jaws of embodiments of basic types A, B, and C, such that embodiments of basic type A have only upper and lower short vacuum channels as vacuum channels, and / or that embodiments of basic type B have only upper short and upper long vacuum channels as vacuum channels, and / or that embodiments of basic type C have only lower short and lower long vacuum channels as vacuum channels. Furthermore, hybrid forms of basic types A, B, and / or C are possible, which provide that, in the forming jaws of the forming jaw pairs, viewed in the direction of the forming jaw axis, the vacuum channels are configured differently with respect to alternatives a, b, and c of main claim 1, i.e., in a first axial section, the configuration is, for example, according to alternative a, and in a second axial section, the configuration is, for example, according to alternative b or c.In preferred designs, the left and right forming jaws are mirror images of each other. However, they can also be designed differently.

[0040] The characterizing features of subclaim 11 are specifications of the design of the coolant channel or coolant channels with respect to the extension of the die axis. The characterizing features of subclaim 12 are specifications of the design of the mesh- and / or grid-like structure of the coolant channel or coolant channels in embodiments of basic types A, B, and C.

[0041] The distinguishing features of dependent claims 13 to 17 are specifications relating to the vacuum device, preferably specifications for the basic types A, B, C. The vacuum device can be configured, for example, as an upper and / or lower vacuum device, preferably a vacuum bar with a length corresponding to the length of the molding section, and / or as a common upper vacuum device for the left and right molding jaws of the molding jaw pairs in the molding section, and / or as a motor-driven and / or sensor-controlled movable upper and / or lower vacuum device.

[0042] The distinguishing features of dependent claim 18 are specifications relating to rotating slides with a moving coolant chain. With such designs, a permanent coolant supply can be implemented particularly advantageously.

[0043] The distinguishing features of dependent claim 19 comprise two alternatives for supplying the coolant to the coolant chain. Alternative 1 provides that the coolant circuit is generated by an electromechanical pumping device. Alternative 2 provides that the coolant circuit is generated hydrodynamically with a stationary coolant reservoir, rather than by an electromechanical pumping device.

[0044] The distinguishing features of subclaim 20 are specifications with left and right rotary slides, and a forming section arranged between them with an upper and / or lower vacuum device. Due to the complex design of the overall device, particular advantages arise with motor-driven and / or sensor-controlled lower and / or upper vacuum devices, which can be guided with particular precision and preferably automatically controlled, engage between the left and right rotary slides.

[0045] The invention, and in particular details of the invention, are explained in more detail below with reference to drawings.

[0046] This shows:

[0047] Fig. 1 shows an embodiment of a device for manufacturing plastic corrugated tubes, in a top view;

[0048] Figs. 2a, 2b and 2c show exemplary embodiments of forming jaws as basic types A, B and C, each in sectional view transverse to the forming jaw axis;

[0049] Figs. 3b and 3c show further embodiments of the basic types B and C, each in sectional view transverse to the die axis;

[0050] Figs. 4b and 4c show further embodiments of the basic types B and C, each in sectional view transverse to the die axis;

[0051] Figs. 5b and 5c show further embodiments of the basic types B and C, each in sectional view transverse to the die axis;

[0052] Figs. 6b and 6c show further embodiments of basic types B and C, each in sectional view transverse to the die axis; Figs. 7b and 7c show further embodiments of basic types B and C, each in sectional view transverse to the die axis;

[0053] Fig. 8a shows a special embodiment of the basic type A in sectional view transverse to the die axis;

[0054] Figs. 9.1 and 9.2, 9.3 and 9.4

[0055] an embodiment of a pair of forming jaws with right and left forming jaws of basic type A with a series arrangement of the vacuum channels,

[0056] Fig. 9.1 shows the pair of forming jaws in perspective view,

[0057] In Fig. 9.2, the right-hand die is shown in a sectional view transverse to the die axis.

[0058] Fig. 9.3 shows a top view of the upper side of the mold jaw pair;

[0059] Fig. 9.4 shows a top view of the underside of the mold jaw pair;

[0060] Figs. 10.1, 10.2, 10.3 and 10.4

[0061] an embodiment of a pair of forming jaws with right and left forming jaws of basic type C with a series arrangement of the vacuum channels,

[0062] Fig. 10.1 shows the pair of forming jaws in perspective view,

[0063] Fig. 10.2 shows the right-hand forming jaw in a sectional view transverse to the forming jaw axis, Fig. 10.3 shows a top view of the underside of the forming jaw pair;

[0064] Fig. 10.4 shows a top view of the upper side of the mold jaw pair;

[0065] Fig. 11 shows another embodiment of a corrugator for the production of plastic corrugated tubes with the forming jaws on forming jaw carriers on deflection slides and with the forming section with vacuum device, front view in perspective representation;

[0066] The device shown in Fig. 1 for producing plastic corrugated tubes comprises an extruder 1 with a die 2 and a downstream corrugator 3. Left and right forming jaws 10 are guided continuously in the corrugator 3 by motor drive. For this purpose, the corrugator 3 has a motor-driven left rotating carriage 5.1 and a motor-driven right rotating carriage 5.2. The left forming jaws 10 are each mounted in the left rotating carriage 5.1 via forming jaw carriers. The right forming jaws 10 are each mounted in the right rotating carriage 5.2 via forming jaw carriers. A linear forming section 55 is formed in the adjacent area between the left rotating carriage 5.1 and the right rotating carriage 5.2. The forming jaws 10 of the left rotary slide 5.1 and the forming jaws 10 of the right rotary slide 5.2 are guided into the forming section in pairs as forming jaw pairs.The pairs of forming jaws run one after the other in forming section 55 in production direction P.

[0067] The design of a pair of forming jaws is shown by way of example in Figures 9.1 to 9.4 and in Figures 10.1 to 10.4: Figures 9.1 to 9.4 show a pair of forming jaws of forming jaw type A. Figures 10.1 to 10.4 show a pair of forming jaws of forming jaw type C.

[0068] In each pair of forming jaws, an inner forming surface 20 of the left forming jaw 10 and an inner forming surface 20 of the right forming jaw 10 are formed. The parting line 100 between the left and right forming jaws runs vertically. The inner forming surface 200 of the forming jaw pairs, composed of the forming surfaces 20 of the left and right forming jaws, has a closed annular cross-section and extends axially along the forming section 55 within the successive pairs of forming jaws.

[0069] The following refers to Fig. 1.

[0070] At the end of the molding section 55 is a molding jaw discharge, in which the left and right molding jaws 10 of the molding jaw pairs are separated. At the beginning of the molding section is a molding jaw inlet, in which the left and right molding jaws are joined together to form molding jaw pairs. Between the molding jaw discharge and the molding jaw inlet, the left molding jaws 10 are returned to the molding jaw inlet via a return conveyor 6.1 of the left molding jaws 10, and the right molding jaws are returned to the molding jaw inlet via a return conveyor 6.2 of the right molding jaws.

[0071] A jet of molten plastic, in the form of a plastic melt tube, is introduced from extruder 1 into the forming section 55 of the corrugator via the die head 2. The corrugated tube 8 is formed in the inner forming surface 200 of the die pairs within the forming section 55 and cooled during its movement in the production direction P along the forming section 55 via the coolant channels 40 formed in the die jaws. During the forming of the corrugated tube 8 in the forming section 55, vacuum channels formed in the die jaws, which—as explained in more detail below—open into the inner forming surface 20, are evacuated by an external vacuum device 50. The external vacuum device 50 engages the outer channel inlets of the vacuum channels on the outside of the die jaws.

[0072] The design of the forming jaws 10 is shown in Figures 2 to 10. The embodiments of the forming jaws shown in the figures represent different variants, as explained in more detail below. In the cross-sectional views in Figures 2 to 8, only the right-hand forming jaws 10 are shown. The left-hand forming jaws 10 are not shown in the cross-sectional views. However, their design is mirror-symmetrical to the right-hand forming jaws. The plane of symmetry is formed by the vertical parting line 100 of the forming jaws. In the embodiments shown in Figures 2 to 8 and Figure 9, the cross-section of the inner forming surface 200 is circular. However, corresponding embodiments are possible in which the cross-section of the inner forming surface 200 is non-circular. In the embodiment shown in Figure 10, the cross-section of the inner forming surface 200 is oval.

[0073] Figures 2a, 2b and 2c show the three basic mold jaw types A, B, C, which differ in the arrangement and design of the vacuum channels formed in the mold jaws.

[0074] The basic type A in Fig. 2a is formed according to alternative a of main claim 1. In the sectional view in Fig. 2a, basic type A has an upper short vacuum channel 01 and a lower short vacuum channel U1. These two short vacuum channels are each located close to and parallel to the vertical parting surface 100. The vertical upper and lower parting surfaces 100 of the mold jaws form the vertical parting plane 100 of the mold jaw pairs. The upper short vacuum channel 01 is located exclusively in the upper half-section of the mold jaw, and the lower short vacuum channel U1 is located exclusively in the lower half-section of the mold jaw.

[0075] The upper short vacuum channel 01 has, as shown in Fig. 2a, an outer channel inlet 01-S on the top of the mold jaw and an inner inlet 01-E in the upper region of the inner mold surface 20, in the illustrated case in the region from 12 o'clock to 1 o'clock, i.e., near the vertical upper parting line 100. The lower short vacuum channel U1 has, as shown in Fig. 2a, an outer channel inlet 111-S on the underside of the mold jaw and an inner inlet U1-E in the inner mold surface 20 in the lower region of the inner mold surface, in the illustrated case in the region from 5 o'clock to 6 o'clock, i.e., near the vertical lower parting line 100. An upper vacuum device 50.2 is arranged on the top of the mold jaw, which interacts with the outer channel inlet 01-S of the upper short vacuum channel when the upper short vacuum channel is vacuum-operated to extract vacuum from the inner mold surface 20 via the vacuum channel U1. A lower vacuum device 50 is located on the underside of the mold jaw.1 arranged, which interacts with the outer channel inlet U1-S of the lower vacuum channel U1 to extract the inner mold surface 20 via the vacuum channel U1.

[0076] The basic type B in Fig. 2b is formed according to alternative b of main claim 1. This basic type B has, in Fig. 2b, an upper short vacuum channel 01 and an upper long vacuum channel 02. The upper short vacuum channel 01 is formed exclusively in the upper half-section of the molding jaw. The upper long vacuum channel 02 is formed in the upper half-section of the molding jaw and extends into the lower half-section of the molding jaw.

[0077] The upper short vacuum channel 01 and the upper long vacuum channel 02 each have an external channel inlet 01-S and 02-S, respectively, on the upper side of the molding jaw. The inner opening 01-E of the upper short vacuum channel 01 into the inner molding surface 20 is located in the upper region of the inner molding surface 20, as shown in Fig. 2b, in the region from 12 o'clock to 1 o'clock, i.e., near the upper vertical parting line 100. The inner opening 02-E of the upper long vacuum channel 02 is located in the lower region of the inner molding surface 20, as shown in Fig. 2b, in the region from 4 o'clock to 5 o'clock, i.e., relatively close to the lower vertical parting line 100. An upper vacuum device 50.2 is arranged only on the upper side of the molding jaw for vacuuming the inner molding surface 20. This works together with the outer channel inlets U1-S and 02-S under vacuum pressure of the vacuum channels 01 and 02.

[0078] The basic type C in Fig. 2c is formed according to alternative c of main claim 1. In Fig. 2c, basic type C has a lower short vacuum channel U1 and a lower long vacuum channel U2. The lower short vacuum channel U1 is formed exclusively in the lower half-section of the molding jaw. The lower long vacuum channel U2 is formed in the lower half-section of the molding jaw and extends into the upper half-section of the molding jaw.

[0079] The lower short vacuum channel U1 and the lower long vacuum channel U2 each have an outer channel inlet U1-S and U2-S, respectively, on the underside of the molding jaw. The inner opening U1-E of the lower short vacuum channel U1 into the inner molding surface 20 is located in the lower region of the inner molding surface 20 in Fig. 2c, in the illustrated case at the 5 o'clock to 6 o'clock position, i.e., near the lower parting line 100. The inner opening U2-E of the lower long vacuum channel U2 is located in the upper region of the inner molding surface 20 in Fig. 2c, in the illustrated case in the 1 o'clock to 2 o'clock position, i.e., near the upper parting line 100. A lower vacuum device 50.1 is arranged only on the underside of the molding jaw for vacuuming the inner molding surface 20. This device interacts with the outer channel inlets U1-S and U2-S by applying a vacuum to the vacuum channels U1 and U2.

[0080] The upper short vacuum channel 01 in basic types A and B is shorter than the upper long vacuum channel 02 in basic type B and runs closer to and parallel to the vertical parting line 100 of the mold jaw. In the illustrated case, the length ratio between the long upper vacuum channel and the short upper vacuum channel is greater than 2.

[0081] The upper long vacuum channel 02 runs at an angle to the upper short vacuum channel 01. It is angled at an obtuse angle and consists of an upper linear section and a lower linear section. The two linear sections, arranged at an angle to each other, surround the inner mold surface 20. The angle is formed in the middle region between the upper and lower sections of the mold jaw.

[0082] Accordingly, the lower short vacuum channel U1 is shorter than the long lower vacuum channel U2 in basic types A and C, and runs closer to and parallel to the vertical parting line 100 of the mold jaw. In the illustrated case, the length ratio between the lower long vacuum channel and the lower short vacuum channel is greater than 2.

[0083] The lower long vacuum channel U2 runs at an angle to the lower short vacuum channel U1. It is angled at an obtuse angle and consists of a lower linear section and an upper linear section. The two linear sections, arranged at an angle to each other, surround the inner forming surface 20. The angle is formed in the middle region between the lower and upper sections of the forming jaw. The forming jaws 10 are each connected at their rear to a forming jaw carrier 11 in Figures 2a, 2b, and 2c, preferably via a clamping connection. In the essentially cuboid body of the forming jaw carrier 11, a coolant inlet 44.1 and a coolant outlet 44.2 are arranged one behind the other in the direction of the forming jaw axis X. Reference is made to Figures 9.1 to 9.4, which show a pair of forming jaws of basic type A, and Figures 10.1 to 10.4, which show a pair of forming jaws of basic type B. Coolant inlet 44.Coolant outlet 44.2 and coolant inlet 44.1 communicate with the coolant channel 40 formed in the mold jaw. The coolant channel 40 has a coolant inlet 40.1 and a coolant outlet 40.2 for this purpose. The coolant channel 40 of the mold jaw extends in the rear half of the mold jaw, i.e., between the rear of the mold jaw, where the coolant inlet 40.1 and the coolant outlet 40.2 are formed, and the front half of the mold jaw. The area of ​​extension of the vacuum channels, including the inner mold surface 20, is formed in the front half of the mold jaw. This front half of the mold jaw has, on the side facing away from the rear of the mold jaw, the upper and lower vertical parting surfaces 100 of the mold jaw in the vertical parting plane of the mold jaw pair.The spatial design of the rear mold jaw half with the coolant channel and the front mold jaw half with the vacuum channels and the inner mold surface is described in more detail below using figures.

[0084] The embodiments shown in Figures 3b and 3c are modified from those shown in Figures 2b and 2c as follows: The embodiment shown in Figure 3b is, like Figure 2b, a basic type B according to alternative b of main claim 1. However, the upper long vacuum channel O2 is shortened. In contrast to the embodiment shown in Figure 2b, the inner opening O2-E of the upper long vacuum channel O2 into the inner mold surface 20 is located in the central region of the inner mold surface 20, in the illustrated case at the 3 o'clock position.

[0085] Accordingly, the embodiment of Fig. 3c is the same as Fig. 2c as a basic type C according to alternative c of main claim 1. However, the lower long vacuum channel U2 is shortened and the inner opening U2-E into the inner mold surface 20 is formed in the middle region of the inner mold surface 20 in the embodiment of Fig. 3c, unlike the embodiment of Fig. 2c, in the middle region of the inner mold surface 20, in the illustrated case in the region 3 o'clock.

[0086] The embodiments shown in Figures 4b and 4c are modified from those shown in Figures 2b and 2c as follows: The embodiment shown in Figure 4b is, like Figure 2b, a basic type B according to alternative b of main claim 1. However, in the embodiment shown in Figure 4b, the upper long vacuum channel 02 has, with regard to the inner opening into the inner mold surface 20, in addition to the inner opening O2-E in the lower section of the mold jaw, a further inner opening O2-E in the upper section of the mold jaw, in the illustrated case in the area from 1 o'clock to 2 o'clock.

[0087] Accordingly, the embodiment of Fig. 4c is the same as Fig. 2c as a basic type C according to alternative c of main claim 1. In the embodiment of Fig. 4c, however, the lower long vacuum channel U2 has, with regard to the opening into the inner mold surface 20, in addition to the inner opening U2-E in the upper section of the mold jaw, a further inner opening U2-E in the lower section of the mold jaw, in the illustrated case in the area from 4 o'clock to 5 o'clock.

[0088] The embodiments shown in Figures 5b and 5c are modified from those shown in Figures 2b and 2c as follows: The embodiment shown in Figure 5b is, like Figure 2b, a basic type B according to alternative b of main claim 1. However, in the embodiment shown in Figure 5b, the upper long vacuum channel 02 is connected to the upper short vacuum channel 01 in the upper section of the molding jaw such that the upper long vacuum channel 02 and the upper short vacuum channel 01 have a common outer channel inlet 01-S on the upper side of the molding jaw. In the illustrated case, the upper long vacuum channel 02 opens into the upper short vacuum channel 01 in its upper section. The outer channel inlet 01-S of the upper short vacuum channel 01 forms the common outer channel inlet. The upper long vacuum channel 02 does not have a separate outer channel inlet on the upper side of the molding jaw.

[0089] Accordingly, the embodiment of Fig. 5c, like Fig. 2c, is a basic type C according to alternative c of main claim 1. The lower long vacuum channel U2 is connected to the lower short vacuum channel U1 in Fig. 5c, just as the upper long vacuum channel 02 is connected to the upper short vacuum channel 01 in Fig. 5b. The lower long vacuum channel U2 in Fig. 5c opens into the lower short vacuum channel U1. The outer channel inlet 111-S forms the common outer channel inlet 111-S on the underside of the molding jaw. The lower long vacuum channel U2 does not have a separate outer channel inlet on the underside of the molding jaw.

[0090] The embodiments shown in Figures 6b and 6c are modified from those shown in Figures 2b and 2c as follows: The embodiment shown in Figure 6b is, like Figure 2b, a basic type B according to alternative b of main claim 1. However, the upper long vacuum channel 02 has an angled section at its lower end, forming a further opening 02-E into the inner mold surface 20, in the illustrated case in the region from 6 o'clock to 5 o'clock. Furthermore, the angled section has a connecting opening 02-V at its free end in the vertical parting surface 100 of the mold jaw for connection to a corresponding upper long vacuum channel of the left mold jaw (not shown).

[0091] Accordingly, the embodiment shown in Fig. 6c is a basic type C according to alternative c of main claim 1. In the embodiment shown in Fig. 6c, the lower long vacuum channel U2 is designed similarly to the upper long vacuum channel in Fig. 6b, such that the lower long vacuum channel U2 has an angled section at its upper end, which opens into the inner mold surface 20 in the upper region, specifically with the opening U2-E in the region from 1 o'clock to 2 o'clock as shown. Additionally, the angled section has a connecting opening U2-V at its free end in the parting plane 100 of the mold jaw for connection to a corresponding lower long vacuum channel of the left mold jaw (not shown).

[0092] The embodiments shown in Figures 7b and 7c are modified from those shown in Figures 6b and 6c as follows: In the embodiment shown in Figure 7b, the upper long vacuum channel O2 and the upper short vacuum channel 01 in the upper section of the mold jaw are connected via an angled section of the upper long vacuum channel O2. This angled upper section crosses and extends through the upper short vacuum channel 01 and has a further connecting opening O2-V at its free end in the vertical parting surface 100 for connection to a corresponding upper long vacuum channel of the left mold jaw (not shown).

[0093] In the embodiment shown in Fig. 7c, the lower long vacuum channel U2 is connected to the lower short vacuum channel U1 in the lower section of the mold jaw in a corresponding manner via an angled section of the lower long vacuum channel U2. This angled section crosses and passes through the lower short vacuum channel U1 and has a further connecting opening U2-V at its free end in the vertical parting surface 100 for connection to a corresponding lower long vacuum channel of the left mold jaw (not shown).

[0094] The embodiment shown in Figure 8a is, like Figure 2a, a basic type A according to alternative a of main claim 1. The embodiment in Figure 8a has an upper short vacuum channel 01 and a lower short vacuum channel U1, which, as in the embodiment shown in Figure 2a, are each located close to and parallel to the vertical parting surface 100. In addition, the embodiment shown in Figure 8a has a long vacuum channel O1, which has a channel inlet OU-S at its upper end on the top of the molding jaw and a channel inlet OU-S at its lower end on the underside of the molding jaw.This long vacuum channel OU has two inlets into the inner mold surface: an upper inlet OU-E into the inner mold surface 20 in the region of the upper section of the mold jaw, in the illustrated case at 1 o'clock to 2 o'clock, and a lower inlet OU-E into the inner mold surface in the region of the lower section of the mold jaw, in the illustrated case at 4 o'clock to 5 o'clock. The mold jaw in Fig. 8a, like the mold jaw in Fig. 2a, provides suction on both sides. In the illustrated case, this consists of an upper suction 50.2, which is provided via two channel inlets on the top of the mold jaw, i.e., a channel inlet 01-S of the upper short vacuum channel 01 and a channel inlet OU-S of the long vacuum channel OU on the top of the mold jaw, and a lower suction 50.1, which is achieved via two channel inlets on the underside of the mold jaw, namely a channel inlet U1-S of the lower short vacuum channel U1 and a channel inlet OU-S of the long vacuum channel OU on the underside of the mold jaw. Modified versions are possible in which the two upper channel inlets are configured as a common channel inlet and / or the two lower channel inlets are configured as a common channel inlet.

[0095] In embodiments particularly relevant to practical application, the various vacuum channels formed in the mold jaws are arranged one behind the other, viewed along the mold jaw axis X. The vacuum channels form rows that extend parallel to the mold jaw axis. This spatial arrangement of the vacuum channels, in conjunction with the arrangement of the inner mold surfaces 20, 200 and the arrangement of the coolant channels 40, is shown by way of example for mold jaws of basic type A in Figures 9.1, 9.2, 9.3 and 9.4 and for mold jaws of basic type C in Figures 10.1, 10.2, 10.3 and 10.4.

[0096] Figures 9.1, 9.2, 9.3, and 9.4 show different representations of a pair of forming jaws, consisting of a left and a right forming jaw 10 of basic type A. The depicted forming jaws each have several upper short vacuum channels 01 and several lower short vacuum channels U1 arranged in a row. Figure 9.2 shows a cross-sectional drawing, from which it can be seen that, as with basic type A in Figure 2a, there is an upper short vacuum channel 01 and a lower short vacuum channel U1, each arranged vertically in a common plane E transverse to the forming jaw axis X. This means that the plane of the drawing in Fig. 9.2 is the common extension plane of the vacuum channels U1 and 01. As Figures 9.3 and 9.4 show, in the left and right forming jaws of the forming jaw pair, several of these extension planes E are arranged one behind the other at equal intervals parallel to each other in the direction of the forming jaw axis X.In each of these extension planes, an upper short vacuum channel 01 and a lower short vacuum channel U1 are arranged in a common extension plane in both the left and right mold jaws. Figures 9.1 and 9.2 show that the vacuum channels 01 and U1, forming in a single extension plane, each open into a common trough 21 of the inner mold surface 20, specifically into an annular channel of the common trough. In the case of the right mold jaw, the opening 01-E of the upper short vacuum channel 01 is located at 12 o'clock to 1 o'clock, and the opening U1-E of the lower short vacuum channel U1 is located at 5 o'clock to 6 o'clock. Each of the troughs 21 is associated with a common extension plane E of an upper short vacuum channel 01 and a lower short vacuum channel U1, such that the number of vacuum channels arranged in each row corresponds to the number of troughs of the inner mold surface 20.

[0097] A motor-driven upper vacuum device 50.2, not shown in Figures 9.1 to 9.4, is used as a vacuum device for extracting the vacuum from the outer channel inlets 01-S on the top of the mold jaws.

[0098] This is designed in the form of a strip, such that it has a length corresponding to the length of the forming section 55 and a width sufficient to cover the rows of outer channel inlets 01-S formed on the upper side of the forming jaw pair as a common vacuum strip for the simultaneous extraction of several rows. In the embodiment shown in Figures 9.1 to 9.4, the extraction is provided on both sides, top and bottom; that is, in addition to the upper vacuum device 50.2, a lower vacuum device 50.1 is arranged. This lower vacuum device is also motor-driven and moves up and down and extracts the rows of outer channel inlets U1-S of the lower short vacuum channels U1 formed on the underside of the left and right forming jaws in the same manner.

[0099] The coolant channels 40 formed in the mold jaws can also be seen in Figures 9.1 and 9.2. Reference is made to the preceding description, in which the division of the mold jaws into a rear mold jaw half and a parting-surface mold jaw half was already explained with reference to Figures 2a, 2b, and 2c. Figures 9.1 and 9.2 now show the spatial arrangement of these two mold jaw halves in more detail.

[0100] Regarding the rear half of the mold jaw, in which the coolant channel 40 is formed:

[0101] A coolant channel 40 is formed in each of the left and right mold jaws. It extends in the space between the rear of the mold jaws and the area covered by the vacuum channels 01 and U1. The mold jaw support 11, associated with each mold jaw, is attached to the rear of each mold jaw 10, preferably via a clamping connection. Only in the sectional view in Figure 10.2 is the mold jaw support 11 shown mounted on the mold jaw. As can be seen, the mold jaw support 11 projects horizontally from the rear of the mold jaw 10. This specific design of the mold jaw support 11 differs from the design shown in Figures 2 to 8. Figures 9.3 and 9.4 show, with the die carrier 11 removed, the clamping head formed on the die 10 for securing the die carrier 11. The die carrier 11 has a coolant inlet channel 44.1 and a coolant outlet channel 44.2. The coolant inlet channel 44.The inlet 40.1 of the mold jaw carrier 11 is connected to the inlet 40.1 of the coolant channel 40 formed in the mold jaw, and the coolant outlet channel 44.2 of the mold jaw carrier 11 is connected to the outlet 40.2 of the coolant channel 40 formed in the mold jaw. The coolant channel 40 of the mold jaw extends with its main section between its inlet 40.1 and its outlet 40.2 over the entire length of the inner mold surface of the mold jaw. The coolant channel 40 is composed of several linear sections, each of which connects to the next at an angle in a zigzag pattern, forming a three-dimensional, overall grid-like structure that fills the rear half of the mold jaw.In the illustrated case, the lattice-like structure forms an essentially cuboid spatial lattice body consisting of the coolant channel sections arranged in a zigzag pattern, which are layered on top of each other in two or more parallel planes within the lattice-like structure.

[0102] Regarding the front mold jaw half, i.e., the mold jaw half on the parting side, which has the vacuum channels and the inner mold surface:

[0103] The extension area of ​​the vacuum channels is formed in the front half of the mold jaw. The upper short vacuum channels 01 are arranged in an upper row. The lower short vacuum channels U1 are arranged in a lower row. The vacuum channels 01 arranged in the upper row and the vacuum channels U1 arranged in the lower row extend in a common, essentially vertical plane, which is parallel to the parting line 100.

[0104] The rear half of the mold jaw has the grid-like structure of the coolant channel 40. In modified versions, the grid body formed by the grid-like structure can have an axially extending recess in its axial central region on the side facing away from the rear of the mold jaw, which is essentially complementary to the inner mold surface 20, in order to achieve the most uniform cooling possible over the circumference of the inner mold surface.

[0105] Figures 10.1, 10.2, 10.3, and 10.4 show corresponding representations of a pair of forming jaws, consisting of a left and a right forming jaw of basic type C. The forming jaws of basic type CB differ from those of basic type A in that basic type C has lower short vacuum channels U1 and lower long vacuum channels U2. Reference is made to Figures 2a and 2c, which show the two basic types A and C. In basic type C, a lower short vacuum channel U1 and a lower long vacuum channel U2 are located in a common plane E transverse to the forming jaw axis X. These vacuum channels are arranged in rows one behind the other, as described above for the embodiment shown in Figures 9.1, 9.2, 9.3, and 9.4. The rows also extend parallel to the die axis X. The number of vacuum channels in each row is identical to the number of wave troughs 21 of the inner mold surface 20. In the embodiment shown in Figures 10.1, 10.2, 10.Figures 3 and 10.4 are external channel inlets of the vacuum channels, however, exclusively located on the underside of the mold jaws. The top view of the underside in Figure 10.3 shows the row arrangement of the external channel inlets of these mold jaws. These are the external channel inlets U1-S of the lower short vacuum channels U1 and the external channel inlets U2-S of the lower long vacuum channels U2.

[0106] In this embodiment, the forming jaws of basic type C have no external channel inlets on their upper surface (see Fig. 10.4). Therefore, in this embodiment, extraction is achieved only as a one-sided extraction from below by a lower vacuum device 50.1, which is designed as a lower vacuum bar. This is identical to the lower vacuum bar in the previously described embodiment shown in Figures 9.1, 9.2, 9.3, and 9.4. The width of the vacuum bar is sufficiently wide to extract all rows of external channel inlets formed on the underside of the forming jaws simultaneously, i.e., the rows of external channel inlets U1-S and U2-S on the left and right forming jaws of the pair of forming jaws.

[0107] In the embodiment shown in Figures 10.1, 10.2, 10.3, and 10.4, coolant channels 40 are also formed in the mold jaws. These run in the same manner as the coolant channels 40 in the embodiment shown in Figures 9.1, 9.2, 9.3, and 9.4. They extend in the rear half of the mold jaw, i.e., in a space between the rear of the mold jaw and the area of ​​extension of the vacuum channels U1 and U2. The coolant channels 40 also extend along the entire length of the inner mold surface 20 and are connected in the same way at their inlet and outlet to the coolant inlet channel 44.1 and the coolant outlet channel 44.2 of the mold jaw carrier 11. They form a lattice structure by means of a corresponding zigzag pattern, as in the embodiment shown in Figures 9.1 to 9.4. One difference in the arrangement of the grid structure relative to the vacuum channels is that in the embodiment shown in Figures 10.1 to 10.4. The series of lower long vacuum channels U2 adjoins the lattice structure of the coolant channel 40 and limits the extent of the lattice structure. In contrast, in the embodiment of Figures 9.1 to 9.4, the series of upper short vacuum channels 01, the inner mold surface 20, and the series of lower short vacuum channels O2 adjoin the lattice structure of the coolant channel 40 and limit the lattice structure.

[0108] To compensate for the reduced cooling of the inner mold surface 20 shown in Figures 10.1 to 10.4, the cooling capacity can be increased in preferred embodiments, e.g., by increasing the coolant flow rate through an increase in the pumping capacity of the coolant pump and / or by designing a larger diameter for the coolant channel 40, and / or by modifying the design of the lattice-like structure of the coolant channel, e.g., by increasing the density of the lattice structure, or by extending the lattice structure behind the upper end of the long lower vacuum channels U2 towards the inner mold surface. For this purpose, the three-dimensional body formed by the lattice-like structure of the coolant channel 40 can be designed in its upper region with a projecting head section that extends beyond the upper end of the long lower vacuum channels U2 towards the inner mold surface 20.

[0109] Figure 11 shows the inlet-side end face of the corrugator 3 in a perspective view, looking towards the deflection area of ​​the left rotary slide 5.1 with the left forming jaws 10 mounted on it, and looking towards the rotary area of ​​the right rotary slide 5.2 with the right forming jaws 10 mounted on it. The inlet to the forming section 55 is shown between the rotary slides 5.1 and 5.2. Figure 11 shows the left and right forming jaws mounted in the associated rotary slides 5.1 and 5.2 via forming jaw carriers 11.

[0110] As already explained with reference to Figures 9 and 10, the mold jaw carriers 11 each have a coolant inlet channel 44.1 with an inlet nozzle and a coolant outlet channel with an outlet nozzle. The inlet nozzle and the outlet nozzle are visible in Figure 11, facing upwards on the mold jaw carriers 11. The coolant inlet channel 44.1 of the mold jaw carrier 11 communicates with the inlet 40.1 of the coolant channel 40 formed in the mold jaw. The coolant outlet channel 44.2 of the mold jaw carrier 11 communicates with the outlet 40.2 of the coolant channel 40 formed in the mold jaw.

[0111] As can be seen in Fig. 11, the forming jaw carriers 11 are permanently coupled to a coolant chain 400 that rotates with the associated rotating carriages 5.1 and 5.2. Each forming jaw carrier 11 has a hose coupling on its coolant inlet port, which projects upwards from the forming jaw carrier 11, for the permanent connection of a connecting hose 400av of the coolant outlet line 400a of the coolant chain 400. The forming jaw carrier 11 also has a hose coupling on its coolant outlet port, which projects upwards from the forming jaw carrier 11, for the permanent connection of a connecting hose 400rv of the coolant return line 400r of the coolant chain 400. The coolant supply to the two rotating coolant chains 400, i.e., the left coolant chain 400 and the right coolant chain 400, is provided by an electric motor-driven coolant pump unit 401, which creates a coolant circuit within the coolant chain 400.

[0112] In an embodiment modified from Fig. 11, the coolant supply of the two rotating coolant chains 400 is not provided via an electromechanical coolant pump device 401, but the coolant circuit is generated hydrodynamically by the circulation of the respective coolant chain in conjunction with a stationary coolant reservoir.

[0113] As shown in Fig. 11, an upper vacuum device is arranged above the molding section 55. This device is designed as an upper vacuum bar 50.2 with a length corresponding to the length of the molding section 55. The upper vacuum bar 50.2 engages in the area between the left rotating slide 5.1 and the right rotating slide 5.2. It is movable up and down above the molding section 55 by means of a drive motor 50.2m, so that in the lowered position it interacts with the outer channel inlets formed on the upper side of the molding jaws in the molding section 55.

[0114] As can be seen in Fig. 11, a lower vacuum device 50.1 is arranged below the molding section in the area between the left deflection slide 5.1 and the right deflection slide 5.2. This lower vacuum bar 50.1 is mounted below the molding section 55 and is movable up and down via a drive motor 50.1 m. In the raised position, it interacts with the outer channel inlets formed on the underside of the molding jaws in the molding section. This configuration of the corrugator with an upper vacuum bar 50.2 and a lower vacuum bar 50.1 can also be modified such that either the upper or the lower vacuum bar is omitted, resulting in only a lower vacuum bar 50.1 for bottom suction only or only an upper vacuum bar 50.2 for top suction only. If the molding jaws are designed as basic type A, suction occurs on both sides.The design of the corrugator is then equipped as shown in Fig. 11 with an upper vacuum bar 50.2 and a lower vacuum bar 50.1.

[0115] If the forming jaws are designed as basic type B forming jaws, the lower vacuum bar 50.1 can be omitted, since the outer channel inlets of the vacuum channels are located exclusively on the upper side of the forming jaws in this case. Extraction then occurs only on one side, as top extraction only, via the upper vacuum bar 50.2.

[0116] If the forming jaws are designed as basic type C forming jaws, the outer channel inlets of the vacuum channels are located exclusively on the underside of the forming jaws. In this case, the upper vacuum bar 50.2 can be omitted on the corrugator 3. Extraction occurs only as lower extraction via the lower vacuum bar 50.1. Reference numeral list

[0117] 1 extruder

[0118] 2 spray heads

[0119] 3 Corrugator

[0120] 5.1 left rotating carriage

[0121] 5.2 right rotating carriage

[0122] 6.1 Return of the left mold jaws

[0123] 6.2 Return of the right-hand die

[0124] 8 corrugated pipe

[0125] 10 baking trays

[0126] 11 Form jaw carriers

[0127] 20 inner mold surface

[0128] 21 wave trough with ring channel

[0129] 22 Wave Mountain

[0130] 55 Form section

[0131] 40 Coolant channel in the mold jaws

[0132] 40.1 Coolant channel inlet 40

[0133] 40.2 Coolant channel outlet 40

[0134] 44.1 Coolant inlet channel in the mold jaw carrier 11

[0135] 44.2 Coolant outlet channel in the mold jaw carrier

[0136] 50 Vacuum device, vacuum bar

[0137] 50.1 lower vacuum bar

[0138] 50.1 m drive motor of 50.1

[0139] 50.2 upper vacuum bar

[0140] 50.2m drive motor from 50.2

[0141] 55 Form section

[0142] 100 vertical parting surface of the mold baking, forming the vertical parting plane

[0143] 200 inner forming surface of the forming jaw pair 400 coolant chain

[0144] 400a Coolant discharge line of 400

[0145] 400av connecting hose from 400a

[0146] 400r coolant return line of 400

[0147] 400rv connecting hose from 400r

[0148] 401 electromechanical pump unit

[0149] X Forming jaw axis

[0150] P Production direction

[0151] 01 upper short vacuum channel

[0152] O2 upper long vacuum channel

[0153] U1 lower short vacuum channel

[0154] U2 lower long vacuum channel

[0155] 01 -S outer channel inlet of 01

[0156] 02-S outer channel inlet of 02

[0157] U1-S outer channel inlet of U1

[0158] U2-S outer channel inlet of U2

[0159] 01 -E inner junction of 01

[0160] 02-E inner junction of 02

[0161] U1-E inner junction of U1

[0162] U2-E inner junction of U2

[0163] 02-V Connection opening of 02

[0164] U2-V connection opening of U2

[0165] Long vacuum channel

[0166] OU-E inner junction of Oll

[0167] OU-S outer channel inlet of Oll

[0168] E common plane of extension of the vacuum channels transverse to the die axis X

Claims

36 63839WO JW / dr UNICOR GmbH, Industriestraße 56, 97437 Hassfurt, DE Claims 1. Device for manufacturing plastic pipes, in particular corrugated plastic pipes, the device comprising an extruder (1) with die head (2) and a corrugator (3) in which a plastic melt tube is introduced via the die head (2) for forming the plastic tube, - wherein in the corrugator left forming jaws 10 and right forming jaws (10) are guided in an endless rotation of the left forming jaws and in an endless rotation of the right forming jaws, in that the left forming jaws are mounted in a motor-driven rotating slide (5.1) via forming jaw carriers (11) and the right forming jaws are mounted in a motor-driven right rotating slide (5.2) via forming jaw carriers (11) such that that in a horizontal forming section (55) the left and right forming jaws are guided in pairs as forming jaw pairs with a vertical parting plane (100), preferably a vertical parting surface, in the production direction (P) forming an axially extending, annular-shaped inner forming surface (200) in the forming jaw pair, and that the forming jaws are each returned from the end of the forming section (55) to the beginning of the forming section (55) in a return (6.1) of the left forming jaws and in a return (6.2) of the right forming jaws, - wherein the forming jaws running in pairs in the forming section (55) in the area of ​​the inner forming surface (200) of the forming jaw pairs in the sense of 37 63839WO JW / dr a suction with vacuum is applied by means of a vacuum device (50, 50.1, 50.2) acting on the inner mold surface (200) via vacuum channels formed in the mold jaws by interaction with channel inlets of the vacuum channels formed on the outside of the mold jaws, - wherein the forming jaws (10) in the corrugator (3) are cooled via a cooling device, in that one or more coolant channels (40) are formed separately from the vacuum channels in each of the forming jaws (10), wherein the one or more coolant channels (40) are permanently supplied with liquid coolant, - by each having at least one coolant inlet channel (44.1) that communicates with the coolant channel (40) or coolant channels (40) of the associated molding jaw (10) via at least one coolant channel inlet (40.1) of the molding jaw (10) formed in the rear of the molding jaw, and by each having at least one coolant outlet channel (44.2) that communicates with the coolant channel (40) or coolant channels (40) of the associated molding jaw (10) via at least one coolant channel outlet (40.2) of the molding jaw (10) formed in the rear of the molding jaw, - wherein the mold jaw has a section bounded by the parting plane, preferably parting surface (100) and a section bounded by the back of the mold jaw, wherein the vacuum channels and the inner mold surface (20) are formed in the section bounded by the parting plane, preferably parting surface (100), and the coolant channel (40) or coolant channels (40) are formed in the section bounded by the rear side, and the coolant channel or coolant channels form a mesh and / or a grid-like structure formed by coolant channel sections arranged in a zigzag and / or serpentine pattern, characterized by a) that the mold jaw has a series of upper short vacuum channels (01) extending along the mold jaw axis (X) adjacent to the parting surface (100) and a series of lower short vacuum channels (U1) extending along the mold jaw axis (X) adjacent to the parting surface (100), wherein the series of upper short vacuum channels (01) and the series of lower short vacuum channels (U1) are arranged on their side facing away from the parting surface (100) adjacent to the mesh and / or grid-like structure of the coolant channel (40) or coolant channels (40), and / or b) that the mold jaw has a series of upper short vacuum channels (01) extending along the mold jaw axis (X) adjacent to the parting surface (100) and a series of upper long vacuum channels (02) extending along the mold jaw axis (X) adjacent to the series of upper short vacuum channels (01), wherein the series of upper long vacuum channels (02) is arranged on its side facing away from the series of upper short vacuum channels (01) adjacent to the mesh and / or grid-like structure of the coolant channel (40) or coolant channels (40), and / or c) that the mold jaw has a series of lower short vacuum channels (U1) extending along the mold jaw axis (X) adjacent to the parting surface (100) and a series of lower long vacuum channels (U2) extending along the mold jaw axis (X) adjacent to the series of lower short vacuum channels (U1), wherein the series of lower long vacuum channels (U2) is separated from the series of lower short vacuum channels at its vacuum channels (U1) are arranged adjacent to the mesh and / or grid-like structure of the coolant channel (40) or coolant channels (40) on the side facing away from the vacuum channel(s). the aforementioned vacuum channels are designed as follows: - the upper short vacuum channel: the upper short vacuum channel (01) is preferably formed parallel to the parting surface (100) exclusively in the upper half section of the mold jaw (10), and / or the upper short vacuum channel (01) has at least one outer channel inlet (01-S) on the top of the mold jaw and at least one inner inlet (01-E) into the inner mold surface (20) in the upper area of ​​the inner mold surface (20), preferably adjacent to the parting surface (100); - the lower short vacuum channel: the lower short vacuum channel (U1) is preferably formed parallel to the parting surface (100) exclusively in the lower half section of the mold jaw (10), and / or the lower short vacuum channel (U1) has at least one outer channel inlet (111-S) on the underside of the mold jaw and at least one inner inlet (U1-E) into the inner mold surface (20) in the lower area of ​​the inner mold surface (20), preferably adjacent to the parting surface (100); - the upper long vacuum channel: The upper long vacuum channel (O2) is formed in the upper half section of the mold (10) and extends to the boundary with the lower section of the mold or into the lower section of the mold, and / or The upper long vacuum channel (O2) has at least one outer channel inlet (O2-S) on the top of the mold jaw and at least one inner inlet (O2-E) into the inner mold surface. (20) in the middle area or in the lower area of ​​the inner mold surface (20); the lower long vacuum channel: The lower long vacuum channel (U2) is formed in the lower half section of the mold (10) and extends to the boundary of the upper half section of the mold or into the upper section of the mold, and / or The lower long vacuum channel (U2) has at least one outer channel inlet (U2-S) on the underside of the mold jaw and at least one inner inlet (U2-E) into the inner mold surface (20) in the middle area of ​​the inner mold surface (20) or in the upper area of ​​the inner mold surface (20).

2. Device according to claim 1, characterized by (i) that in embodiments according to alternative a) of main claim 1, it is provided that that the outer channel inlet (01-S) of the upper short vacuum channel (01) formed on the top of the mold jaw is the only outer channel inlet of the upper short vacuum channel (01) on the outside of the mold jaw, and / or that the outer channel inlet (U1-S) of the lower short vacuum channel (U1) formed on the underside of the mold jaw is the only outer channel inlet of the lower short vacuum channel (U1) on the outside of the mold jaw; and / or (ii) that in embodiments according to alternative b) of main claim 1, it is provided that that the outer channel inlet (01-S) of the upper long vacuum channel (02) formed on the upper side of the mold jaw is relative to the outer channel inlet (01-S) of the upper short vacuum channel (01) as 41 63839WO JW / dr is configured as a separate outer channel inlet of the upper long vacuum channel (02) or as a common outer channel inlet of the upper long vacuum channel (02) and the upper short vacuum channel (01); and / or (iii) that in embodiments according to alternative c) of main claim 1, it is provided that that the outer channel inlet (U2-S) of the lower long vacuum channel (U2) formed on the underside of the mold jaw is designed as a separate channel inlet of the lower long vacuum channel (U2) relative to the outer channel inlet (U1-S) of the lower short vacuum channel (U1) or is designed as a common outer channel inlet of the lower long vacuum channel (U2) and the lower short vacuum channel (U1).

3. Device according to one of the preceding claims, characterized by (i) that in embodiments according to alternative a) of main claim 1 and / or in embodiments according to alternative b) of main claim 1, it is provided that that the upper short vacuum channel (01) has only one inner opening (01-E) into the inner mold surface (20) of the molding jaw, preferably formed in an upper region of the inner molding surface, or has several inner openings (01-E) into the inner mold surface (20) of the molding jaw, preferably one, some or each of them formed in the upper half section of the molding jaw; and / or (ii) that in embodiments according to alternative b) of main claim 1 and / or in embodiments according to alternative c) of main claim 1, it is provided that that the lower short vacuum channel (U1 ) has only one inner opening (U1 - E) into the inner mold surface (20) of the mold jaw, preferably 42 63839WO JW / dr formed in a lower area of ​​the inner mold surface, or has several inner inlets (U1-E) into the inner mold surface (20) of the mold jaw, preferably one, some or each of them formed in the lower half section of the mold jaw; and / or (iii) that in embodiments according to alternative b) of main claim 1, it is provided that that the upper long vacuum channel (02) has one or more internal inlets (02-E) into the inner mold surface (20), preferably one, several, or each of them being formed in a region of the inner mold surface in the lower half-section of the mold jaw, and / or preferably at least one being formed in a region of the inner mold surface (20) in the upper half-section of the mold jaw; and / or (iv) that in embodiments according to alternative c) of main claim 1, that the lower long vacuum channel (U2) has one or more internal inlets (U2-E) into the inner mold surface (20), preferably one, several or each of them formed in a region of the inner mold surface in the upper half section of the mold jaw and / or preferably at least one formed in a region of the inner mold surface (20) in the lower half section of the mold jaw.

4. Device according to one of the preceding claims, characterized by (i) that in embodiments according to alternative b) of main claim 1, it is provided that that the upper long vacuum channel (O2), which has an outer channel inlet (O2-S) in the region of one end, preferably in the region of its upper end on the top of the mold jaw, preferably its only outer channel inlet on the outside of the mold jaw, and in the region of its opposite, 43 63839WO JW / dr preferably has a connecting opening (O2-V) extending through the parting surface (100) of the mold jaw at the lower end for connection to a vacuum channel in a mold jaw adjacent in the molding section of the mold jaw pair, preferably, the upper long vacuum channel (02) has a further connecting opening (02-V) extending through the parting surface (100) of the mold jaw in the region of its upper end near its outer channel inlet (02-S) for connection with a vacuum channel in the adjacent mold jaws of the mold jaw pair in the molding section; and / or (ii) that in embodiments according to alternative c) of main claim 1, it is provided that that the lower long vacuum channel (U2), which in the region of one end, preferably in the region of its lower end, has an outer channel inlet (U2-S) on the underside of the mold jaw, preferably its only outer channel inlet on the outside of the mold jaw, and in the region of its opposite end, preferably upper end, has a connecting opening (U2-V) extending through the parting surface (100) of the mold jaw for connection with a vacuum channel in the adjacent mold jaws of the mold jaw pair in the molding section, wherein it is preferably provided that the lower long vacuum channel (U2) has in the region of its lower end, preferably near its outer channel inlet (U2-S), a further connecting opening (U2-V) extending through the parting surface (100) of the mold jaw for connection with a vacuum channel in the adjacent mold jaws of the mold jaw pair in the molding section. 44 63839WO JW / dr 5. Device according to one of the preceding claims, characterized by (i) that in embodiments according to alternative b) of main claim 1, it is provided that that the upper long vacuum channel (02), which in the region of its end, preferably upper end, has an outer channel inlet (02-S) on the outside of the molding jaw, in the region of its opposite end, preferably lower end, has an outer channel inlet (02-S) on the underside of the molding jaw as a further outer channel inlet, and is provided in a preferred embodiment, that in addition to the upper short vacuum channel (01), a lower short vacuum channel (U1) is formed in the mold jaw, preferably the upper short vacuum channel (01), the lower short vacuum channel (U1) and the upper long vacuum channel (02) are formed in a common plane of extension; and / or (ii) that in embodiments according to alternative c) of main claim 1, it is provided that that the lower long vacuum channel (U2), which in the region of one end, preferably lower end, has an outer channel inlet (U2-S) on the outside of the molding jaw, in the region of its opposite end, preferably upper end, has an outer channel inlet on the top of the molding jaw as a further outer channel inlet, and in a preferred embodiment is provided, that in the mold jaw an upper short vacuum channel (01) is formed in addition to the lower short vacuum channel (U1), preferably the lower short vacuum channel (U1), the upper short vacuum channel (01) and 45 63839WO JW / dr the lower long vacuum channel (U2) is formed in a common extension plane.

6. Device according to one of the preceding claims, characterized by (i) that in embodiments according to alternative a) of main claim 1, it is provided that that the upper short vacuum channel (01) is of the same length as the lower short vacuum channel (U1), preferably both being linear over their entire length and / or having the same diameter; and / or (ii) that in embodiments according to alternative b) of main claim 1, it is provided that that the upper short vacuum channel (01) is shorter than the upper long vacuum channel (02) and preferably that the upper short vacuum channel (01) is linear over its entire length and the upper long vacuum channel (02) has at least one bend or deflection and is linear over one or more sections of its length, and / or that the upper short vacuum channel (01) has a smaller diameter than the upper long vacuum channel (02); and / or (iii) that in embodiments according to alternative c) of main claim 1, it is provided that that the lower short vacuum channel (U1) is shorter than the lower long vacuum channel (U2) and preferably that the lower short vacuum channel (U1) is linear over its entire length and the lower long vacuum channel is linear with at least one bend or deflection and only over one or more sections of its length; and / or that the lower short vacuum channel (U1) has a smaller diameter than the lower long vacuum channel (U2). 46 63839WO JW / dr 7. Device according to one of the preceding claims, characterized by (i) that in embodiments according to alternative a) of main claim 1, it is provided that that the upper short vacuum channel (01) and the lower short vacuum channel (U1) extend over most of their length, preferably over their entire length, in a common plane of extension, preferably transverse to the axis (X) of the mold jaw (10); and / or (ii) that in embodiments according to alternative b) of main claim 1, it is provided that that the upper short vacuum channel (01) and the upper long vacuum channel (02) extend over a large part of their length, preferably over their entire length, in a common plane of extension, preferably transverse to the axis (X) of the mold jaw (10); and / or (iii) that in embodiments according to alternative c) of main claim 1, it is provided that that the lower short vacuum channel (U1) and the lower long vacuum channel (U2) extend over a large part of their length, preferably over their entire length, in a common plane of extension, preferably transverse to the axis (X) of the mold jaw (10).

8. Device according to one of the preceding claims, characterized by (i) that in embodiments according to alternative a) of main claim 1, it is provided that that the mold jaws have several upper short vacuum channels (01) and several lower short vacuum channels (U1) formed in equal numbers, wherein the upper short vacuum channels (01) and the 47 63839WO JW / dr lower short vacuum channels (U1 ) are each arranged in a row along the die axis (X) and in pairs an upper short vacuum channel and a lower short vacuum channel are arranged in common planes of extension which preferably extend transversely to the die axis (X), preferably, the extension plane is assigned to one of the wave troughs (21) of the inner mold surface (20) arranged one behind the other along the mold jaw axis (X), in that the upper short vacuum channel (01) and the lower short vacuum channel (U1) of the respective extension plane open into the assigned wave trough (21) of the inner mold surface (20); and / or (ii) that in embodiments according to alternative b) of main claim 1, it is provided that that several upper short vacuum channels (01) and several upper long vacuum channels (02) are arranged in the same number in the mold jaw, wherein the upper short vacuum channels (01) and the upper long vacuum channels (02) are arranged one behind the other in rows along the mold jaw axis (X), and wherein an upper short vacuum channel and an upper long vacuum channel are arranged in pairs in common planes of extension, which preferably extend transversely to the mold jaw axis (X), preferably, each extension plane is assigned one of the wave troughs (21) of the inner mold surface (20) arranged one behind the other along the mold jaw axis (X), in that the upper short vacuum channel (01) and the upper long vacuum channel (02) of the respective extension plane open into the assigned wave trough (21) of the inner mold surface (20); and / or (iii) that in embodiments according to alternative c) of main claim 1, it is provided that 48 63839WO JW / dr that several lower short vacuum channels (U1) and several lower long vacuum channels (U2) are formed in the mold jaw in equal numbers, wherein the lower short vacuum channels (U1) and the lower long vacuum channels (U2) are each arranged in rows along the mold jaw axis (X) one behind the other, and wherein a lower short vacuum channel and a lower long vacuum channel are arranged in pairs in common planes of extension, which preferably extend transversely to the mold jaw axis (X), preferably, it is provided that each extension plane is assigned one of the wave valleys (21) of the inner mold surface (20) arranged one after the other along the mold jaw axis (X), in that the lower short vacuum channel (U1 ) and the lower long vacuum channel (U2) of the respective extension plane open into the assigned wave valley (21) of the inner mold surface (20).

9. Device according to one of the preceding claims, characterized by that the forming jaws (10) in embodiments according to alternative a) and / or alternative b) and / or alternative c) of main claim 1 are designed in such a mirror-symmetric manner, preferably mirror-symmetric with respect to a vertical longitudinal center plane of the forming jaw pairs, i.e. the vertical parting plane (100) of the forming jaws, such that the forming jaws (10) can be used universally as left and right forming jaws; and / or that the forming jaws (10) in embodiments according to alternative a) and / or alternative b) and / or alternative c) of main claim 1 are designed in such a mirror-symmetrical manner, preferably mirror-symmetrical with respect to a horizontal transverse central plane of the forming jaws, such that the forming jaws (10) in embodiments according to alternative a) of main claim 1 also function as 49 63839WO JW / dr Forming jaws of the embodiments according to alternative a) of main claim 1 can be used, and the forming jaws in embodiments according to alternative b) of main claim 1 can be used as forming jaws of alternative c) of main claim 1 when rotated by 180° about this plane, and the forming jaws in embodiments according to alternative c) of main claim 1 can be used as forming jaws of alternative b) of main claim 1 when rotated by 180° about this plane.

10. Device according to one of the preceding claims, characterized by that in embodiments according to alternative a) of main claim 1, the forming jaws (10) have as vacuum channels exclusively upper short vacuum channels (01) and exclusively lower short vacuum channels (U1) and no upper long vacuum channels (O2) and no lower long vacuum channels (U2); and / or that in embodiments according to alternative b) of main claim 1, the forming jaws (10) have as vacuum channels exclusively upper short vacuum channels (01) and upper long vacuum channels (02) and no lower short vacuum channels (U1) and no lower long vacuum channels (U2); and / or that in embodiments according to alternative c) of main claim 1 the forming jaws (10) have as vacuum channels exclusively lower short vacuum channels (U1) and lower long vacuum channels (U2) and no upper short vacuum channels (01) and no upper long vacuum channels (02). 50 63839WO JW / dr 11. Device according to one of the preceding claims, characterized by that the coolant channel (40) and / or the coolant channels (40) extend in the mold jaw from the rear of the mold jaw towards the inner mold surface (20), preferably provided that that the coolant channel (40) or coolant channels (40) in the mold jaw are designed to run adjacent to the inner mold surface (20), preferably parallel to the axis (X) of the mold jaw, such that the inner mold surface (20) is cooled over its entire axial extent or at least over a large part of its axial length.

12. Device according to one of claims 11 , characterized by that in embodiments according to alternative a) of claim 1, it is provided that the mesh- and / or grid-like structure of the coolant channel (40) or coolant channels (40) faces the series of upper short vacuum channels (01), the inner mold surface (20) and the series of lower short vacuum channels (U1) and / or covers them from the rear, and / or that in embodiments according to alternative b) of claim 1, it is provided that the mesh- and / or grid-like structure of the coolant channel (40) or coolant channels (40) faces the series of upper long vacuum channels (O2) and / or covers them from the rear, preferably having a projecting foot section that engages the lower end of the upper long vacuum channels (O2), and / or that in embodiments according to alternative c) of claim 1 it is provided that the net- and / or grid-like structure of the coolant channel (40) 51 63839WO JW / dr or the coolant channels (40) of the series of lower long vacuum channels (U2) is facing and / or covers them from the rear, preferably having a projecting head section that overlaps the upper end of the lower long vacuum channels (U2).

13. Device according to one of the preceding claims, characterized by i) that the vacuum device (50) has a movably mounted upper vacuum device (50.2) arranged above the molding section (55), which interacts in the molding section (55) with the channel inlets formed on the upper side of the molding jaws of the vacuum channels formed in the molding jaws, and / or ii) that the vacuum device (50) has a movably mounted lower vacuum device (50.1) arranged below the molding section (55), which interacts in the molding section (55) with the channel inlets formed on the underside of the molding jaws, preferably provided that - that in embodiments according to alternative a) of claim 1 the vacuum device (50) comprises an upper vacuum device (50.2) according to i) which interacts with the outer channel inlets (01-S) of the upper short vacuum channels (01) formed on the upper side of the mold jaws, and a lower vacuum device (50.1) according to ii) which interacts with the outer channel inlets (U1-S) of the lower short vacuum channels (U1) formed on the underside of the mold jaws, or - that in embodiments according to alternative b) of claim 1 the vacuum device (50) has an upper vacuum device (50.2) according to i) which is connected to the outer channel inlets (01-S, O2-S) of the upper short vacuum channels formed on the top of the forming jaws 52 63839WO JW / dr (01) and upper long vacuum channels (02) interacts and does not have a lower vacuum device (50.1) according to ii), or - that in embodiments according to alternative c) of claim 1 the vacuum device (50) has a lower vacuum device (50.1) according to ii) which interacts with the outer channel inlets (U1-S, U2-S) of the lower short vacuum channels (U1) and lower long vacuum channels (U2) formed on the underside of the forming jaws and does not have an upper vacuum device (50.2) according to i).

14. Device according to claim 13, characterized by that the upper vacuum device (50.2) has at least one upper vacuum bar (50.2) movably mounted relative to the molding section, and / or the lower vacuum device (50.1) has at least one lower vacuum bar (50.1) movably mounted relative to the molding section, wherein the outer channel inlets of the molding jaws arranged in the molding section (55) each form one or more parallel rows along the molding section (55) and the vacuum bar (50.1, 50.2) has a length corresponding to the length of the molding section (55), and / or corresponds only to a section of the length of the molding section (55), and / or has a width corresponding to one or more rows of the outer channel inlets, preferably provided that (i) that in the case of embodiments according to alternative a) of claim 1 - the upper vacuum bar (50.2) interacts with the outer channel inlets (01 -S) of the upper short vacuum channels (01) formed on the upper side of the mold jaws, arranged in rows, and - the lower vacuum bar (50.1 ) interacts with the outer channel inlets (U1-S) of the lower short vacuum channels (U1) formed on the underside of the mold jaws, arranged in rows, 53 63839WO JW / dr and / or (ii) that in embodiments according to alternative b) of claim 1 the upper vacuum bar (50.2) interacts with the outer channel inlets (01-S, 02-S) of the upper short vacuum channels (01) and upper long vacuum channels (02) formed on the upper side of the mold jaws, arranged in rows, and / or (iii) that in embodiments according to alternative c) of claim 1 the lower vacuum bar (50.1 ) interacts with the outer channel inlets (U1-S, U2-S) of the lower short vacuum channels (U1) and lower long vacuum channels (U2) formed on the underside of the mold jaws, arranged in rows.

15. Device according to claim 14, characterized by that the upper vacuum device has only one movably mounted upper vacuum bar (50.2) which is assigned as a common upper vacuum bar (50.2) to the channel inlets formed on the upper side of the left and right forming jaws of the forming section (55), and / or that the lower vacuum device (50.1) has only one movably mounted lower vacuum bar (50.1) which is assigned as a common lower vacuum bar (50.1) to the channel inlets arranged on the underside of the left and right forming jaws of the forming section (55).

16. Device according to one of claims 13 to 15, characterized by that the upper vacuum device (50.2), preferably the common upper vacuum bar and / or the lower vacuum device (50.1), preferably the common lower vacuum bar, is motor-driven 54 63839WO JW / dr is / are mounted in a motor-driven and / or sensor-controlled manner to be movable between an out-of-service position and an in-service position, wherein the motor-driven and / or sensor-controlled upper vacuum device (50.2) and / or lower vacuum device (50.1), preferably the common upper vacuum bar (50.2) and / or the common lower vacuum bar (50.1), is arranged in the out-of-service position at a distance from the associated channel inlets of the vacuum channels and in the in-service position in an active position, preferably in contact with the associated channel inlets of the vacuum channels.

17. Device according to claim 16, characterized by that the movable upper vacuum device (50.2), preferably the common upper vacuum bar (50.2) and / or the movable lower vacuum device (50.1), preferably the common lower vacuum bar (50.1), is / are driven by a motor drive which is controlled by a sensor, wherein the sensor is designed in such a way that the sensor detects the closed state and / or the open state of the forming jaws of the forming line and, in the case of the closed position, switches on the motor drive for movement to the forming line and / or, in the case of the open position, switches off the motor drive.

18. Device according to one of the preceding claims, characterized by that the forming jaw carriers (11) are permanently coupled to a coolant chain (400) running with the associated rotating slide (5.1), by each forming jaw carrier (11) having a hose coupling, preferably a coupling nozzle for the permanent connection of a 55 63839WO JW / dr coolant inlet hose of the coolant chain (400), e.g. a connecting hose (400ar) of a coolant outlet line (400a) of the coolant chain (400), and at the outlet of the coolant outlet channel (44.2) a hose coupling, preferably a coupling nozzle for the permanent connection of a coolant outlet hose of the coolant chain (400), e.g. a connecting hose (400rv) of a coolant return line (400r) of the coolant chain (400).

19. Device according to claim 18, characterized by that for the coolant supply of the coolant chain (400) (i) the coolant chain (400) has a coolant circuit which can be generated by an electric motor-driven coolant pump device independently of the circulation of the coolant chain (400), or (ii) the coolant chain (400) has a coolant circuit which can be generated hydrodynamically by the circulation of the coolant chain (400) in conjunction with a stationary coolant reservoir.

20. Device according to one of the preceding claims, characterized by that the left rotary slide (5.1) of the left forming jaws is arranged to the left of the forming section (55) and the right rotary slide (5.2) of the right forming jaws is arranged to the right of the forming section (55), (i) that the upper vacuum device (50.2), preferably the common upper vacuum bar (50.2), is mounted so as to be movable up and down in the area between the rotating slide (5.1) of the left mold jaws and the rotating slide (5.2) of the right mold jaws above the molding section in order to interact in the lowered position with the outer channel inlets formed on the upper side of the mold jaws in the molding section, and / or 56 63839WO JW / dr (ii) that the lower vacuum device (50.1), preferably the common lower vacuum bar (50.1), is mounted in the area between the rotating slide (5.1) of the left forming jaws and the rotating slide (5.2) of the right forming jaws below the forming section (55) so as to be movable up and down for the purpose of cooperating in the raised position with the outer channel inlets formed on the underside of the forming jaws in the forming section.

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