DE102023102683A1 - Device for producing plastic pipes - Google Patents

Abstract

A device (10) for producing plastic pipes (10) is described, with an extruder (9) with an injection head (9s) and a corrugator (1) into which a plastic melt hose for forming the plastic pipe (10) is introduced via the injection head (9s). For optimized guidance of the mold jaws (5) in the stationary guide device (6), it is provided that the mold jaw has an additional guide pin or several additional guide pins in addition to the first guide pin (5.1) and the second guide pin (5.2), wherein the additional guide pin or the additional guide pins each engage or engage in a separate associated guide groove, namely a) forming an only phased active circuit or inactive circuit and/or b) forming a non-positive and/or non-positive engagement in the associated guide groove in the sense of merely secondary guidance, and/or c) forming a positive engagement and/or a force-locking intervention in the sense of a parallel redundant guide.

Description

The invention relates to a device for producing plastic pipes, preferably plastic corrugated pipes according to the preamble of claim 1.

From the WO 2017/064 368 A1 and the WO 2017/046 421 A1 Devices constructed in this way are known.

The invention is based on the object of creating a device which is improved with regard to the guidance of the mold jaws.

According to the invention, this object is achieved with the subject matter of claim 1. Further solution features emerge from the subclaims 2 to 28 which refer back to claim 1.

1. a) unter Ausbildung einer phasenweisen, vorzugsweise wechselweisen Wirkstellung oder Wirklosstellung einzelner Bereiche der Führungseinrichtung und/oder
2. b) unter Ausbildung eines nicht formschlüssigen und/oder nicht kraftschlüssigen Eingriffs in die zugeordnete Führungsnut im Sinne einer lediglich sekundären Mitführung, und/oder
3. c) unter Ausbildung eines formschlüssigen und/oder kraftschlüssigen Eingriffs in die zugeordnete Führungsnut im Sinne einer parallelen redundanten Führung

oder im Sinne einer Führung, die Kräfte des zusätzlichen weiteren Führungsstiftes oder der weiteren zusätzlichen Führungsstifte abstützt, die anders gerichtet sind als die in der Führungsnut des ersten Führungsstiftes und/oder zweiten Führungsstiftes abgestützten Kräfte.The solution according to the invention is a device having the features of the preamble of the main claim 1. It is essential for the solution according to the invention that the mold jaw has, in addition to the first guide pin and the second guide pin, an additional guide pin or several additional guide pins, wherein the additional guide pin or the additional guide pins each engage or engage in a separate associated guide groove of the guide device and/or interact or interact with an associated guide surface or guide edge, namely

1. a) by forming a phased, preferably alternating active or inactive position of individual areas of the control device and/or
2. b) by forming a non-positive and/or non-positive engagement in the associated guide groove in the sense of merely secondary guidance, and/or
3. c) by forming a positive and/or non-positive engagement in the associated guide groove in the sense of a parallel redundant guide

or in the sense of a guide which supports forces of the additional guide pin or the further additional guide pins which are directed differently than the forces supported in the guide groove of the first guide pin and/or second guide pin.

Preferred embodiments of alternative a) of the main claim provide that, in order to form an active position or inactive position according to alternative a), the additional guide pin or the additional guide pins engage or engage in the associated additional guide groove in that this guide pin or these guide pins engage or engage in a section of the associated guide groove in a form-fitting and/or force-fitting manner to form the active position and engage or engage or engage in a non-form-fitting and/or non-force-fitting manner in another section of the guide groove to form the inactive position. (KZ2)

Particularly preferred embodiments of alternative a) of the main claim 1 can provide that in a first section of the guide device, preferably in the deflection region with adjoining inlet section, the first guide pin and the second guide pin are in the operative position, and the third guide pin and the fourth guide pin are in the inoperative position, and that in a second section of the guide device, preferably in the outlet section with adjoining deflection region, the third guide pin and the fourth guide pin are in the operative position, and the first guide pin and the second guide pin are in the inoperative position.

With regard to the guide grooves, preferred embodiments can provide that in order to form an inoperative position according to alternative a) and/or to form a non-positive and/or non-positive engagement according to alternative b), the guide groove into which the additional guide pin engages is designed as an extended guide groove whose clear width is larger than the diameter of the guide pin.

Preferred embodiments can provide a resilient design of the guide grooves by providing that, in order to form an inoperative position according to alternative a) and/or to form a non-positive and/or non-positive engagement according to alternative b), the guide groove into which the additional guide pin engages has a resiliently mounted and/or resiliently designed side wall and/or has a resiliently mounted and/or resiliently designed groove base.

With regard to the guide groove, it can also be provided that in order to form an inoperative position according to alternative a) and/or to form a non-positive and/or non-positive engagement according to alternative b), the guide groove into which the additional guide pin engages is designed as a guide groove that widens in height.

Advantageously, the guide pin can be designed to be resilient, by providing that in order to form an inoperative position according to alternative a) and/or to form a non-positive and/or non-positive engagement according to alternative b), the additional guide pin is laterally spring-mounted or laterally spring-loaded.

Additionally or alternatively, it can also be provided in this sense that in order to form an inoperative position according to alternative a) and/or to form a non-positive and/or non-positive engagement according to alternative b), the additional guide pin is axially spring-mounted or designed to be axially spring-loaded.

Particularly preferred embodiments, preferably according to alternative c) of the main claim 1 in the sense of a guide which supports forces of the additional further guide pin or the additional further guide pins which are directed differently than the forces supported in the guide groove of the first guide pin and/or the second guide pin, provide that the first guide pin and the second guide pin are formed on the upper side and/or on the lower side of the mold jaw, preferably aligned vertically, and that the additional further guide pin or the further guide pins are formed on the upper side and/or on the lower side of the mold jaw, preferably aligned vertically.

In a preferred development, it can be provided that the first guide pin and the second guide pin each engage in the associated guide groove of the guide device while supporting lateral forces, preferably horizontally directed lateral forces of the guide pin, and that the additional further guide pin or the additional further guide pins engage or engage in the associated guide groove and/or interact or interact with the associated guide surface and/or guide edge of the guide device while supporting axial forces of the guide pin, preferably vertically directed axial forces.

Particularly preferred embodiments, preferably according to alternative c) of the main claim 1, in the sense of a guide, which supports the forces of the additional further guide pin or the additional further guide pins, which are directed differently than the forces supported in the guide groove of the first guide pin and/or the second guide pin, provide that the first guide pin and the second guide pin are formed on the top and/or on the bottom of the mold jaw, preferably aligned vertically, and that the additional further guide pin or the additional further guide pins are formed on a side surface of the mold jaw which faces away from the mold surface of the mold jaw, preferably aligned horizontally.

In a preferred development, it can be provided that the first guide pin and the second guide pin engage in the associated guide groove while supporting lateral forces of the guide pin, preferably horizontally directed lateral forces, and that the additional further guide pin or the additional further guide pins engage or engage in the associated guide groove for supporting lateral forces of the guide pin, preferably vertically directed lateral forces, and/or interact or interact with the associated guide surface or guide edge of the guide device.

With regard to the guide pins, preferred embodiments provide that the guide pins are each designed such that the free end of the guide pin engaging in the guide groove is designed as a movement-resistant part of the guide pin.

With regard to the guide pins, preferred embodiments can additionally or alternatively provide that the guide pins are each designed such that the guide pin is pressed or welded or screwed into the mold jaws.

As far as the stationary guide device is concerned, it can advantageously be provided that the guide grooves for engagement of the associated guide pins form at least part of the stationary guide device for guiding the mold jaws, preferably a guide device for a deflection area in the inlet section and/or a guide device for a deflection area in the outlet section and/or a guide device in the intermediate section of the corrugator in the region of the mold section for guiding the mold jaw pairs and/or in the region of the return for guiding the mold jaws and/or in the region of the return for guiding the mold jaws from the end of the mold section to the beginning of the mold section.

Particularly preferred embodiments provide that the stationary guide device for guiding the mold jaws has a guide and/or tempering body device, which is preferably formed in the intermediate section of the corrugator in the region of the molding section for guiding the mold jaw pairs and/or in the region of the return for guiding the mold jaws from the end of the molding section to the beginning of the molding section.

In preferred developments, it can be provided that the guide and/or tempering body device is formed from a plurality of tempering bodies arranged axially one behind the other in the guide direction and/or is formed from a plurality of tempering bodies arranged next to one another transversely to the guide direction, wherein it is preferably provided that one or more tempering medium channel or channels are formed in the tempering body and/or in the tempering bodies, through which a tempering medium flows.

In this context, it can also advantageously be provided that guide recesses and/or flat guide surfaces having elevations and/or depressions are formed in a guide and tempering surface device, which interact with corresponding guide recesses and/or guide surfaces of the passing mold jaws.

Particularly preferred embodiments provide that the left mold jaws are guided endlessly in a left mold jaw circuit and the right mold jaws are guided endlessly in a right mold jaw circuit, wherein the left mold jaw circuit and the right mold jaw circuit each have a deflection area, an inlet section designed as a deflection area with a deflection pinion device, a linear mold section and an outlet section designed as a deflection area with a deflection pinion device and a return section connecting the outlet section and the inlet section.

As far as the stationary guide device is concerned, it can be particularly advantageously provided that the stationary guide device of the mold jaws is formed by a stationary guide device in each deflection region and by a stationary guide device in the intermediate section, wherein it is preferably provided that the stationary guide device in each deflection region has a frame device and/or a base plate device and/or a cover plate device on or in which the guide grooves are arranged and which has a guide surface device for slidingly guiding the underside of the passing mold jaws; and that the stationary guide device in the intermediate section has a guide and/or tempering body device which at least partially surrounds the passing mold jaws and has guide and/or tempering surfaces for sliding guidance with the outer surfaces of the mold jaws.

In this context, it can be provided that the guide and/or tempering body device has a plurality of guide grooves which form the guide grooves for engagement of the guide pins of the mold jaws, wherein it is preferably provided that at least one of the guide grooves is formed by a gap between adjacent guide and/or tempering bodies.

As far as the designs of mold jaws are concerned, which have a tooth row device on their side surface facing away from the mold surface of the mold jaw, it can be provided that the tooth row device interacts with a deflection pinion device in the deflection areas. However, it can also be provided that the tooth device additionally or alternatively interacts with a pinion device in the intermediate section, preferably in the mold section. Preferred designs provide that a tooth row device is formed on a side surface of each mold jaw, which interacts with the deflection pinion device in the deflection areas.

The tooth row device has one or more internal or external rows of teeth which extend on a side surface of the mold jaw facing away from the mold surface of the mold jaw in the longitudinal direction of the mold jaw, i.e. in the production direction.

In preferred embodiments, the tooth row device in conjunction with the interacting pinion device, i.e. the deflection pinion device in the deflection areas of the corrugator or another pinion device, e.g. in the forming section in the intermediate section of the corrugator, primarily has a drive function or play compensation function in the drive direction. It preferably has no guide function in the vertical direction, i.e. it does not act to absorb vertical forces.

In designs in which the tooth row device is designed as an internal tooth row device and primarily has a drive function or a play compensation function in the drive direction, the pinion therefore engages in the tooth row device with upper and lower vertical play.

The mold jaws are guided in the deflection areas by the guide pins formed on the mold jaws, which engage in fixed guide grooves in the deflection area. The guide pins only act laterally, i.e. they only absorb lateral forces. The mold jaws are guided in the vertical direction by supporting the bottom of the mold jaw on a fixed guide surface, preferably a base surface of a fixed storage and/or guide frame. Axial vertical support in the guide grooves by the guide pins is achieved with preferred designs. guides do not. The guide pins engage in the guide grooves with axial vertical play.

In preferred embodiments, the stationary guide device of the mold jaws in the intermediate section of the corrugator is designed as a guide and/or tempering body device. The mold jaws are guided at least on the underside of the mold jaws and optionally on at least one side surface of the mold jaws on guide and/or tempering surfaces of the guide and/or tempering body device.

In preferred designs, the guide pins on the underside and the top of the mold jaws engage in corresponding receiving grooves in the guide and/or tempering surfaces. The receiving grooves can be designed as guide grooves to support lateral forces. However, they can also be designed as receiving grooves with lateral play.

Designs in which the tooth row device is designed as an internal tooth row device do not require a receiving groove for the tooth row device in the lateral guide and/or tempering surface of the guide and/or tempering body, since the internal tooth row device is arranged countersunk in the side surface of the mold jaws.

Designs with a tooth row device on top require a receiving groove in the lateral guide and/or tempering surface of the guide and/or tempering body device, which in preferred designs is designed with upper and lower vertical play, so that the receiving groove does not have to provide a guiding function, i.e. does not have to support vertical forces.

Designs of mold jaws in which the guide pins are arranged on the top of the mold jaw and no or only a few guide pins are arranged on the bottom are advantageous for guiding the mold jaw on the bottom of the mold jaw, since in these designs the bottom of the mold jaw is designed as a continuous guide surface. Accordingly, these mold jaw designs do not require a receiving groove or only a small number of receiving grooves in the guide and/or tempering surface of the guide and/or tempering body device.

In special mold jaw designs in which the guide pins are designed to be axially spring-loaded at least on the underside, the guide pins can be automatically extended and retracted so that the lower guide and/or tempering surfaces of the guide and/or tempering body device can be designed as continuous surfaces without a receiving groove for the guide pins of the mold jaws.

In preferred designs, the top of the mold jaws runs with vertical clearance to the facing upper guide and/or tempering surface of the guide and/or tempering body device. These upper guide and/or tempering surfaces then have no guide function, but rather function merely as tempering surfaces.

As far as the design of the tooth row device is concerned, it can be provided that the tooth row device is designed as an internal tooth row device which is formed by an internal tooth row or several internal tooth rows, wherein the teeth and/or the tooth gaps of the tooth row are each directed perpendicular to the side surface and are designed to engage in the side surface and not protrude beyond the side surface, or that the tooth row device is designed as a resting tooth row device which is formed by an overlying tooth row or several overlying tooth rows, wherein the teeth and/or tooth gaps of the tooth row are each directed perpendicular to the side surface and are designed to rest on the side surface and protrude beyond the side surface.

As regards configurations of the tooth row device, preferred embodiments provide that the tooth row device designed as an internal tooth row device is formed by an internal tooth row arranged centrally or almost centrally with respect to the vertical extension of the side surface, or that the tooth row device designed as a resting tooth row device is formed by an overlying tooth row arranged centrally or almost centrally with respect to the vertical extension of the side surface.

The central design of the row of teeth offers particular advantages with regard to the symmetrical introduction of force through the pinion meshing with the row of teeth.

Similar advantages result from designs which provide that the tooth row device designed as an internal tooth row device is formed by an upper internal tooth row formed in the area of the upper half of the side surface, preferably directly in the upper edge of the mold jaw, and by a lower internal tooth row formed in the area of the lower half of the side surface, preferably directly in the lower edge of the mold jaw. is det, or that the tooth row device designed as a supporting tooth row device is formed by an upper supporting tooth row in the region of the upper half of the side surface, preferably directly in the upper edge of the mold jaw, and by a lower supporting tooth row formed in the region of the lower half of the side surface, preferably directly in the lower edge of the mold jaw, wherein it is provided that the supporting tooth row projects vertically from the side surface and the upper side of the supporting tooth row is aligned with the upper side of the mold jaw and the lower side of the supporting tooth row is aligned with the lower side of the mold jaw.

Also advantageous are designs which provide that the upper inner row of teeth is arranged at a distance below the upper edge of the side surface and/or the upper edge of the mold jaw, wherein the distance preferably corresponds to a quarter of the vertical extension of the side surface, and/or that the lower inner row of teeth is arranged at a distance above the lower edge of the side surface and/or the lower edge of the mold jaw, wherein the distance preferably corresponds to a quarter of the vertical extension of the side surface.

In conjunction with the upper or lower distance in the area of the upper or lower edge of the side surface, advantages arise in the guidance and tempering of the mold jaws on lateral guide and/or tempering surfaces, in that it is provided that a flat surface is formed between the upper edge of the side surface or the upper edge of the mold jaw and the upper edge of the inner or overlying row of teeth, which is aligned with the plane of the side surface of the mold jaw, and/or that a flat surface is formed between the lower edge of the inner or overlying row of teeth and the lower edge of the side surface or the lower edge of the mold jaw, which is aligned with the plane of the side surface of the mold jaw.

An advantageous heat distribution in mold jaws with an internal tooth row device is achieved if it is provided that the inner row of teeth of the tooth row device designed as an internal tooth row device has an engagement depth that engages the side surface of the mold jaw and the mold jaw has a minimum wall thickness between the outside of the side surface of the mold jaw and the mold surface of the mold jaw in the region of the smallest wall thickness of the mold jaw, where: d - t ≥ t.

• 1 erfindungsgemäße Vorrichtung, Draufsicht;
• 1a die Vorrichtung in 1, Schittdarstellung entlang Line A-A in 1, die Führungs- und/oder Temperierkörpereinrichtung zeigend;
• 2a Formbacken mit Führungsstiften, perspektivische CAD-Darstellung;
• 2b Formbacken mit Führungsstiften, diverse Zeichnungsansichten;
• 3a Einlaufgeometrie der ortsfesten Führungseinrichtung, perspektivische CAD-Darstellung;
  • - Der obere Führungsstift 5.1 greift form- und/oder kraftschlüssig in die obere innere Führungsnut 50.1 ein.
  • - Der untere Führungsstift 5.2 greift form- und/oder kraftschlüssig in die untere innere Führungsnut 50.2 ein.
  • - Der obere Führungsstift 5.3 greift in die obere äußere erweiterte Führungsnut 50.3 ein.
  • - Der untere Führungsstift 5.4 greift in die untere äußere erweiterte Führungsnut 50.4 ein.
• 3b Einlaufgeometrie der ortsfesten Führungseinrichtung, perspektivische Zeichnung;
• 4a Auslaufgeometrie der ortsfesten Führungseinrichtung, perspektivische CAD-Darstellung;
  • - Der obere Führungsstift 5.3 greift form- und/oder kraftschlüssig in die obere äußere Führungsnut 50.3 ein.
  • - Der untere Führungsstift 5.4 greift form- und/oder kraftschlüssig in die untere äußere Führungsnut 50.4 ein.
  • - Der obere Führungsstift 5.1 greift in die obere innere erweiterte Führungsnut 50.1 ein.
  • - Der untere Führungsstift 5.2 greift in die untere innere erweiterte Führungsnut 50.2 ein.
• 4b Auslaufgeometrie der ortsfesten Führungseinrichtung, perspektivische Zeichnung;
• 5 Formbacken mit seitlich gefederten Führungsstiften, diverse Zeichnungsansichten;
• 6 Formbacken mit axial gefederten Führungsstiften, diverse Zeichnungsansichten;
• 7 Formbacken mit Führungsstiften nur an Oberseite des Formbackens, diverse Zeichnungsansichten;
• 8 Formbacken mit Führungsstiften nur an Unterseite des Formbackens, diverse Zeichnungsansichten;
• 9 Formbacken mit einem Führungsstift an der Oberseite und zwei Führungsstiften an der Unterseite des Formbackens und einer an der Seitenfläche innenliegenden Zahnreiheneinrichtung, wobei die innenliegende Zahnreiheneinrichtung wie folgt variiert ausgebildet ist:
  • - in 9/1 eine in der Seitenfläche ausgebildete mittige innenliegende Zahnreihe,
  • - in 9/2 eine mit Abstand unterhalb des oberen Randes der Seitenfläche ausgebildete obere innenliegende Zahnreihe und eine mit Abstand oberhalb des unteren Randes der Seitenfläche ausgebildete untere innenliegende Zahnreihe,
  • - in 9/3 eine unmittelbar in dem oberen Rand der Seitenfläche ausgebildete obere innenliegende Zahnreihe und eine unmittelbar im unteren Rand der Seitenfläche ausgebildete untere innenliegende Zahnreihe,
  • - in 9/4 identisch wie 9/3, jedoch die beiden Führungsstifte an der Unterseite in Produktionsrichtung gesehen hintereinander in gemeinsamer vertikaler Ebene fluchtend angeordnet, wie erkennbar in Verbindung 9/4s, die eine Seitenansicht in 9/4 darstellt;
• 10 Formbacken mit einem Führungsstift an der Oberseite und zwei Führungsstiften an der Unterseite des Formbackens und einer an der Seitenfläche aufliegenden Zahnreiheneinrichtung, wobei die außenliegende Zahnreiheneinrichtung wie folgt variiert ausgebildet ist:
  • - in 10/1 eine in der Seitenfläche ausgebildete mittige aufliegende Zahnreihe,
  • - in 10/2 eine mit Abstand unterhalb des oberen Randes der Seitenfläche ausgebildete obere aufliegende Zahnreihe und eine mit Abstand oberhalb des unteren Randes der Seitenfläche ausgebildete untere aufliegende Zahnreihe,
  • - in 10/3 eine unmittelbar in dem oberen Rand der Seitenfläche ausgebildete obere aufliegende Zahnreihe und eine unmittelbar im unteren Rand der Seitenfläche ausgebildete untere aufliegende Zahnreihe,
  • - in 10/4 identisch wie 10/3, jedoch die beiden Führungsstifte an der Unterseite in Produktionsrichtung gesehen hintereinander in gemeinsamer vertikaler Ebene fluchtend angeordnet, wie erkennbar in Verbindung 10/4s, die eine Seitenansicht der 10/4 darstellt;

The invention is described below using exemplary embodiments in conjunction with figures. The figures show:

• 1 Device according to the invention, plan view;
• 1a the device in 1 , Section along line AA in 1 , showing the guide and/or tempering body device;
• 2a Form jaws with guide pins, perspective CAD representation;
• 2 B Form jaws with guide pins, various drawing views;
• 3a Inlet geometry of the stationary guide device, perspective CAD representation;
  • - The upper guide pin 5.1 engages positively and/or force-fittingly in the upper inner guide groove 50.1.
  • - The lower guide pin 5.2 engages positively and/or force-fittingly in the lower inner guide groove 50.2.
  • - The upper guide pin 5.3 engages in the upper outer extended guide groove 50.3.
  • - The lower guide pin 5.4 engages in the lower outer extended guide groove 50.4.
• 3b Inlet geometry of the stationary guide device, perspective drawing;
• 4a Run-out geometry of the stationary guide device, perspective CAD representation;
  • - The upper guide pin 5.3 engages positively and/or force-fittingly in the upper outer guide groove 50.3.
  • - The lower guide pin 5.4 engages positively and/or force-fittingly in the lower outer guide groove 50.4.
  • - The upper guide pin 5.1 engages in the upper inner extended guide groove 50.1.
  • - The lower guide pin 5.2 engages in the lower inner extended guide groove 50.2.
• 4b Run-out geometry of the stationary guide device, perspective drawing;
• 5 Form jaws with laterally spring-loaded guide pins, various drawing views;
• 6 Form jaws with axially spring-loaded guide pins, various drawing views;
• 7 Form jaws with guide pins only on the top side of the form jaw, various drawing views;
• 8th Form jaws with guide pins only on the underside of the form jaw, various drawing views;
• 9 Form jaws with a guide pin on the top and two guide pins on the bottom of the form jaw and a tooth row device on the inside of the side surface, wherein the inner tooth row device is designed in a varied manner as follows:
  • - in 9 /1 a central inner row of teeth formed in the side surface,
  • - in 9 /2 an upper inner row of teeth formed at a distance below the upper edge of the side surface and a lower inner row of teeth formed at a distance above the lower edge of the side surface,
  • - in 9 /3 an upper inner row of teeth formed directly in the upper edge of the side surface and a lower inner row of teeth formed directly in the lower edge of the side surface,
  • - in 9 /4 identical to 9 /3, but the two guide pins on the underside are arranged one behind the other in a common vertical plane when viewed in the direction of production, as can be seen in connection 9 /4s, which is a side view in 9 /4 represents;
• 10 Form jaws with a guide pin on the top and two guide pins on the bottom of the form jaw and a tooth row device resting on the side surface, wherein the external tooth row device is designed in a varied manner as follows:
  • - in 10 /1 a central row of teeth formed in the side surface,
  • - in 10 /2 an upper row of teeth formed at a distance below the upper edge of the side surface and a lower row of teeth formed at a distance above the lower edge of the side surface,
  • - in 10 /3 an upper row of teeth formed directly in the upper edge of the side surface and a lower row of teeth formed directly in the lower edge of the side surface,
  • - in 10 /4 identical to 10 /3, but the two guide pins on the underside are arranged one behind the other in a common vertical plane when viewed in the direction of production, as can be seen in connection 10 /4s, which is a side view of the 10 /4 represents;

1. The general structure and basic functions of the embodiments according to the invention

The embodiments each involve a device for producing plastic pipes. The general structure of the device is shown in the 1 and 1a The device comprises an extruder 9 with an injection head 9s and a corrugator 1. A plastic melt hose is introduced into the corrugator 1 via the injection head 9s for forming a plastic tube 10.

The corrugator 1 works with left and right mold jaws 5. It has a molding section 1f in which the left and right mold jaws 5 are guided as mold jaw pairs in the production direction.

In a left and a right inlet section 1e of the corrugator, the left and right mold jaws 5 are brought together to form pairs of mold jaws at the beginning of the molding section 1f.

In a left and a right outlet section 1a of the corrugator, the left and right mold jaws 5 of the mold jaw pairs are guided apart from the end of the molding section 1f.

The molding section 1f is formed in an intermediate section 1z of the corrugator arranged between the inlet section 1e and the outlet section 1a. Furthermore, a return 1r is formed in the intermediate section 1z on both sides of the molding section 1f, namely a return 1r for the left mold jaws 5 and a return 1r for the right mold jaws 5. In these return 1r, the left and right mold jaws 5 are returned from the end of the molding section 1f to the beginning of the molding section 1f.

The pairs of mold jaws arranged one behind the other in the mold section 1f lie abutting against one another in the mold section 1f. A pair of mold jaws comprises two mirror-image mold jaws 5, namely a left and a right mold jaw 5, whose mold surfaces 5f form the negative mold for the plastic pipe 10 formed in the device. To form plastic corrugated pipes, the mold surfaces 5f are wave-shaped. The mold surfaces 5f of the pairs of mold jaws arranged abutting against one another in the mold section 1f form a continuous mold channel.

The left mold jaws and the right mold jaws are each continuously moved in a self-contained mold jaw circuit. The left mold jaws are moved in the left mold jaw circuit and the right mold jaws are moved in the right mold jaw circuit.

The two mold jaw circuits each have a substantially elliptical shape. Each mold jaw circuit consists of a straight section which forms the mold section 1f, a section leading into the mold section which forms the inlet section 1e and a section leading out of the mold section which forms the outlet section 1a, as well as a preferably straight return section which forms the return 1r and represents the connection between the outlet section 1a and the inlet section 1e.

The inlet section 1e and the outlet section 1a are each deflection regions in which deflection pinions 11 are arranged, which interact with tooth row devices 5z of the mold jaws guided in the deflection regions.

The left mold jaw circuit and the right mold jaw circuit are arranged relative to one another such that the mold section 1f of the left mold jaw circuit and the mold section 1f of the right mold jaw circuit lie parallel to one another and the left and right mold jaws in the mold jaw section are arranged as mold jaw pairs with mold surfaces 5f facing one another.

The nozzle-shaped injection head 9s of the extruder 9 is arranged with its outlet opening at the entrance of the molding section 1f. The plastic melt tube is injected into the molding section 1f of the corrugator via the injection head 9s. The pressures acting on the inside and outside of the plastic melt tube in the molding section 1f are controlled by appropriate pressure control. Depending on the design of the nozzle device of the injection head 1s, single- or multi-walled plastic tubes can be produced.

• - einer Führungseinrichtung 6u in den Umlenkbereichen des Korrugators, d.h. in dem Umlenkbereich der linken und rechten Formbacken in den Einlaufabschnitt 1e und/oder in dem Umlenkbereich der linken und rechten Formbacken in den Auslaufabschnitt 1a und
• - einer Führungseinrichtung 6z in dem Zwischenabschnitt des Korrugators mit der Formstrecke 1f zur Führung der Formbackenpaare und mit den Rückführungen 1 r zur Führung der linken und rechten Formbacken 5 vom Ende der Formstrecke 1f zum Anfang der Formstrecke 1f.

The mold jaws 5 are guided in a stationary guide device 6. The stationary guide device 6 is composed in the illustrated embodiment of

• - a guide device 6u in the deflection areas of the corrugator, ie in the deflection area of the left and right mold jaws in the inlet section 1e and/or in the deflection area of the left and right mold jaws in the outlet section 1a and
• - a guide device 6z in the intermediate section of the corrugator with the forming section 1f for guiding the pairs of forming jaws and with the return guides 1r for guiding the left and right forming jaws 5 from the end of the forming section 1f to the beginning of the forming section 1f.

The guide device 6u in the deflection areas of the corrugator is in the illustrated embodiment of the 1 formed by guide pins formed on the mold jaws 5, which engage in fixed guide grooves in the fixed guide frame. The design of the guide pins and the associated guide grooves is explained in more detail below in section 2.

The guide pins 5i are guided laterally in the guide grooves, i.e. with support from lateral forces. The mold jaws 5 are guided with their guide surfaces on the underside with vertical weight support on a horizontal support surface fixed to the frame. The support surface fixed to the frame can be designed to be flush with the upper edge of the guide groove adjacent to the guide grooves.

The guide device 6z in the intermediate section of the corrugator is formed by a guide and/or tempering body device 8. This is in 1 It has a guide and/or tempering surface device with guide recesses having elevations or depressions and/or flat guide surfaces, which interact with corresponding guide recesses and/or guide surfaces of the passing mold jaws. Tempering channels 8k are preferably formed in the tempering bodies 8i, through which tempering medium flows.

The guide and/or tempering body device 8 is formed by guide and/or tempering bodies 8i. The guide and/or tempering bodies 8i are designed as elongated bodies with a longitudinal extension in the production direction. In the guide and/or tempering bodies 8i, tempering channels 8k are formed which run in the longitudinal direction and through which a tempering medium flows. They lie one behind the other in the longitudinal direction and on top of one another in the transverse direction and form a receiving space for the passing mold jaws or pairs of mold jaws.

In the molding section 1f, the passing mold jaw pairs are surrounded on four sides by the guide and/or tempering bodies 8i in the embodiment shown. In the return runs 1r, the passing mold jaws are surrounded on three sides.

The surfaces of the guide and/or tempering bodies 8i facing the pairs of mold jaws or mold jaws form guide and/or tempering surfaces 8f, on which the passing mold jaws are guided in a sliding manner, resting directly on them, or slide past them at a small distance. The sliding guidance, which rests directly on them, takes place on the Underside and, if necessary, on a side surface of the mold jaws. The sliding past with a small distance takes place on the top side of the mold jaws.

Both in the case of direct support and in the case of a small distance, heat is transferred via the guide and/or tempering surfaces in the sense of tempering the mold jaws. In the case of direct support on the guide and/or tempering surfaces 8f, in addition to tempering, the mold jaws are guided over a surface.

In addition to the guide and/or tempering surfaces 8f, guide grooves are formed in the guide and/or tempering body device 8 for receiving and guiding the guide pins formed on the mold jaws. The guide grooves in the guide and/or tempering bodies 8i are formed by forming longitudinal groove-shaped spaces between adjacent guide and/or tempering bodies 8i.

In modified designs, stationary guide and/or tempering bodies 8i can also be arranged in the guide device 6u of the deflection areas, into which the guide pins 5i formed in the mold jaws engage to guide the mold jaws and additionally tempering takes place via the guide and/or tempering surfaces of the guide and/or tempering bodies.

Alternatively or additionally, the guide pins formed on the mold jaws 5 can also engage in guide grooves in the stationary guide frame in the guide device 6z in the intermediate section of the corrugator. These can be guide grooves that are formed in or on the stationary guide and/or tempering bodies 8i and/or guide grooves that are formed in the guide frame outside the guide and/or tempering bodies 8i.

2. The inventive design of the guide pins and their engagement in the associated guide grooves in the inventive embodiments

In the following, alternatives a), b), c) of claim 1 are explained using the embodiments according to the invention in the figures.

The preferred mold jaws 5 are shown in the 2 to 8 These mold jaws each have four guide pins 5i. The guide pins 5i are designated in the figures with 5.1, 5.2, 5.3 and 5.4. The mold jaws 5 in the 9 and 10 are modifications. They each have only three guide pins 5i. In these figures, the guide pins are designated 5i. The associated guide grooves 50i, in which the guide pins engage, are designated 50.1, 50.2, 50.3 and 50.4 in the figures.

• In dem Umlenkbereich, der in den Einlauf in die Formstrecke 1f führt, sind nur die Führungsstifte 5.1 und 5.2 form- und/oder kraftschlüssig in die zugeordneten Führungsnuten 50.1 und 50.2 eingreifend für die Führung der Formbacken wirksam. Die Führungsstifte 5.3 und 5.4 sind während dieser Phase nicht wirksam, und zwar durch Maßnahmen, die für die Führung dieser Führungsstifte 5.3 und 5.4 einen formschlüssigen und/oder kraftschlüssigen Eingriff eliminieren und/oder zumindest deutlich reduzieren, z.B. indem die Maßnahmen der Unteransprüche 3 bis 7 dort umgesetzt sind.
• Im Umlenkbereich, der in den Auslauf in die Formstrecke 1f führt, sind bei diesen Ausführungsbeispielen nur die Führungsstifte 5.3 und 5.4 form- und kraftschlüssig in die zugeordneten Führungsnuten 50.3 und 50.4 eingreifend für die Führung der Formbacken wirksam, d.h. in Wirkstellung. Die Führungsstifte 5.1 und 5.2 sind während dieser Phase in diesem Bereich nicht wirksam, d.h. in Wirklosstellung, und zwar durch Umsetzung von Maßnahmen, die für diese Führung dieser Führungsstifte 5.1 und 5.2 einen formschlüssigen und/oder kraftschlüssigen Eingriff eliminieren und/oder zumindest deutlich reduzieren, z.B. durch Maßnahmen der Unteransprüche 3 bis 7.

In the embodiments shown in the figures, claim 1, alternative a) is implemented as follows:

• In the deflection area that leads to the inlet into the mold section 1f, only the guide pins 5.1 and 5.2 are effective for guiding the mold jaws by engaging positively and/or non-positively in the associated guide grooves 50.1 and 50.2. The guide pins 5.3 and 5.4 are not effective during this phase, namely by measures that eliminate and/or significantly reduce a positive and/or non-positive engagement for the guidance of these guide pins 5.3 and 5.4, e.g. by implementing the measures of subclaims 3 to 7 there.
• In the deflection area that leads to the outlet in the mold section 1f, in these embodiments only the guide pins 5.3 and 5.4 are effective for guiding the mold jaws, engaging in a form-fitting and force-fitting manner in the associated guide grooves 50.3 and 50.4, i.e. in the operative position. The guide pins 5.1 and 5.2 are not effective in this area during this phase, i.e. in the inoperative position, by implementing measures that eliminate and/or at least significantly reduce a form-fitting and/or force-fitting engagement for this guidance of these guide pins 5.1 and 5.2, e.g. by measures of subclaims 3 to 7.

This means that when the mold jaws pass through the corrugator in these embodiments, only the guide pins 5.1 and 5.2 are automatically active in the deflection area that leads to the inlet into the molding section, and only the guide pins 5.3 and 5.4 are automatically active in the deflection area that leads to the outlet into the molding section. This means that the formation of a phased active or inactive position of individual areas of the guide provided for in claim 1, alternative a) is automatically set when the mold jaws pass through the corrugator.

Regarding the effectiveness or ineffectiveness of the guide pins in the intermediate section 1z of the corrugator, i.e. in the forming section 1f and in the return section 1r, the following applies: Different design variants are possible:

In a first embodiment, it can be provided that in the molding section the guide pins 5.1 and 5.2 effective in the inlet continue to be effective and the guide pins 5.3 and 5.4 are ineffective; while in the return area 1r the guide pins 5.3 and 5.4 effective in the outlet are effective and the guide pins 5.1 and 5.2 are ineffective.

In a second embodiment, it can be provided that in the mold section 1f the guide pins 5.3 and 5.4 which are already effective in the outlet continue to be effective and the guide pins 5.1 and 5.2 are ineffective.

In a third embodiment, it can be provided that none of the guide pins are effective in the mold section 1f or in the return line 1r, but rather only the guide and/or tempering surfaces of the guide and/or tempering body device 8 interact with the mold jaws in the sense of a guide. In this case, the guide pins can engage in groove-shaped recesses with play, i.e. they do not engage in a force-fitting or form-fitting manner.

The illustrated embodiments can now also be modified in such a way that claim 1, alternative b) is implemented, namely in such a way that, for example, the guide pins 5.1 and 5.2 are permanently effective in all areas and the guide pins 5.3 and 5.4 are permanently ineffective in all areas or are only partially effective. In order to realize this permanent ineffectiveness or only reduced effectiveness of the guide pins 5.3 and 5.4, so that these guide pins 5.3 and 5.4 are then ineffective in the entire area and/or only run secondarily, the measures according to subclaims 3 to 7 are implemented for these guide pins. These guide pins 5.3 and 5.4 can then serve to distribute the load or to reduce wear on the guide pins. The guide pins 5.3, 5.4, which merely rotate, can thus also provide safety and emergency running properties for emergency running or in the event that the effective guide pins 5.1 and 5.2 have suffered significant wear.

The illustrated embodiments can also be modified in such a way that claim 1, alternative c) is implemented. This means that in this case all guide pins 5.1, 5.2, 5.3 and 5.4 are as evenly as possible in form-fitting and/or force-fitting engagement with the guide grooves assigned to them and thus parallel redundant guides are formed. The implementation of these designs with parallel redundant guides means a relatively high technical standard. In order to implement parallel redundant guides, blocking situations due to overdetermination must be prevented. In order to permanently implement the parallel redundant guides, it can be advantageous if the form-fitting and/or force-fitting engagement of the guide pins is reduced to a certain extent, i.e. to a certain degree, in all guides by implementing measures from subclaims 3 to 7. Preferably, this reduction can be carried out as uniformly as possible and to as small an extent as possible for all guides in order to realize the parallel redundant guides for all guide pins in their associated guide grooves as desired in the embodiments according to claim 1, alternative c) as optimally as possible.

In the examples of the 2 to 8 Each mold jaw 5 has a total of four guide pins 5i, namely the guide pins 5.1, 5.2, 5.3 and 5.4. At least two of the guide pins are offset from each other in the direction of production in order to maintain the pivoting movement of the mold jaw in the deflection area.

Compared to the embodiments of the 2 to 8 In modified embodiments, it can be provided that the mold jaws have a different number of guide pins 5i, ie in contrast to the 2 to 8 illustrated embodiments, e.g. each mold jaw only has a total of three guide pins or each mold jaw has a total of more than four guide pins.

The 9 and 10 show such embodiments with a total of three guide pins 5i on the mold jaws 5. In the case shown there, two guide pins are arranged on the underside and only one guide pin on the top of the mold jaw.

The embodiment of the 9 /4 differs in the arrangement of the guide pins from the embodiment of the 9 /3 that in 9 /4 the two guide pins 5i arranged on the underside of the mold jaws are arranged one behind the other in a common vertical plane in the direction of production. The same applies to the embodiments of the 10 /4 and 10/3.

In these embodiments, alternatives a, b and c of the main claim 1 can be implemented. For this purpose, it can be provided, for example, that for the implementation of alternative a in the deflection areas, different guide pins 5i are effective and ineffective. In the following, for the discussion of alternatives a, b and c, the upper guide pin 5i is referred to as the first guide pin, the lower outer guide pin as the second guide pin and the lower inner guide pin as the third guide pin. In order to implement the alternatives, it is then possible for the first guide pin and the second guide pin to be effective in the deflection area of the inlet section, while the third guide pin is ineffective. In the deflection area of the run-up section, the first guide pin and the third guide pin are then effective, while the second guide pin is ineffective.

For the implementation of alternative b, it can be provided that the guidance is primarily carried out with the first guide pin and the second guide pin, and the third guide pin only runs secondarily.

For the implementation of alternative c, it can be provided that the first guide pin and the second guide pin are permanently guided in a form-fitting and/or force-fitting manner in the associated guide grooves and the third guide pin is permanently redundantly guided in a form-fitting and/or force-fitting manner in the associated guide groove.

Another aspect is that the 9 and 10 illustrated embodiments have a tooth row device 5z, which differs from the tooth row device 5z of the 2 to 8 The examples shown differ. 2 to 8 the illustrated tooth row devices 5z are designed as overlying tooth row devices, each with a row of teeth formed on the upper edge of the mold jaw and a row of teeth formed on the lower edge of the mold jaw.

• Bei dem Ausführungsbeispiel in 9/1 ist die Zahnreiheneinrichtung 5z durch eine an der Seitenfläche mittig angeordnete innenliegende Zahnreihe ausgebildet.

In the examples in the 9 In contrast, the tooth row devices 5z are designed as internal tooth row devices 5z, as follows:

• In the example in 9 /1, the tooth row device 5z is formed by an inner row of teeth arranged centrally on the side surface.

In the example in 9 /2, the tooth row device 5z on the side surface of the mold jaw is formed by an inner row of teeth formed in the region of the upper edge and an inner row of teeth formed in the region of the lower edge, wherein the respective rows of teeth are not formed directly in the edge, ie not directly in the upper edge or in the lower edge, but at a distance from the respective edge.

In the embodiment of the 9 /3 and 9/4, the tooth row device 5z is formed by an upper row of teeth formed directly in the upper edge and a lower row of teeth formed directly in the lower edge.

In the examples of the 10 The tooth row device 5z is in contrast to the tooth row device of the embodiment of the 9 not designed as an internal tooth row device, but as a surface-mounted tooth row device. In all other details, the design of the mold jaws is identical to that in 9 .

It should be expressly pointed out that in the embodiments of the 2 to 8 the overlying tooth row devices provided therein in correspondingly modified embodiments as internal tooth row devices, as shown in the 9 are provided, or as overlying tooth row devices 5z, as shown in 10 are intended to be trained.

List of reference symbols

1

Corrugator

1a

Discharge section

1e

Inlet section

1f

Forming line

1r

return

1 q

Cross member

1z

Intermediate section

5

Form jaws

5f

Form surface

5i

Guide pin

5.1, 5.2, 5.3, 5.4

Guide pins 5i

50i

Guide groove

50.1, 50.2, 50.3, 50.4

Guide grooves 50i

5z

Tooth row device

6

fixed guidance system

6u

Guide device in the deflection area of the corrugator

6z

Guide device in the intermediate area of the corrugator

8th

Guide and/or tempering device

8i

Guide and/or tempering body

8k

Tempering channel

8u

Temperature channel diversion

8f

Tempering surface

9

Extruders

9f

Forming air supply

10

Plastic pipe

9s

Spray head

11

Deflection pinion

12

Play compensation device with pinion device engaging in tooth row device of the mold jaw pairs guided in the mold section

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• WO 2017/064368 A1 [0002]
• WO 2017/046421 A1 [0002]

Claims (28)

Device for producing plastic pipes, preferably corrugated plastic pipes (10), with an extruder (9) with an injection head (9s) and a corrugator (1) into which a plastic melt hose for forming the plastic pipe (10) is introduced via the injection head (9s), wherein it is provided that - the corrugator (1) has a molding section (1f) in which mold jaws (5) are guided in pairs in the direction of production, - that in an inlet section (1e) of the corrugator (1) the mold jaws (5) are brought together to form mold jaw pairs at the beginning of the molding section (1f), - that in an outlet section (1a) of the corrugator (1) the mold jaw pairs are guided apart from the end of the molding section (1f), - that in an intermediate section (1z) of the corrugator (1) arranged between the inlet section (1e) and the outlet section (1a), the molding section (1f) is designed to guide the mold jaw pairs and at least one Return (1r) is formed, in which the mold jaws (5) are returned from the end of the mold section (1f) to the beginning of the mold section (1f), - that the corrugator has a stationary guide device (6, 8, 8i) for guiding the mold jaws (5), - that each mold jaw (5) has a first guide pin (5.1) and a second guide pin (5.2) and the mold jaws (5) are guided in the guide device (6, 8, 8i) in that the first guide pin (5.1) engages with its free end in a first guide groove (50.1) of the guide device (6, 8, 8i) and the second guide pin (5.2) engages with its free end in a second guide groove (50.2) of the guide device (6, 8, 8i), - that a distance along the extension of the mold jaw (5) in the production direction is formed between the first guide pin (5.1) and the second guide pin (5.2.) is, - that the first guide pin (5.1) and the second guide pin (5.2) are arranged on the same side of the mold jaw (5) or on different sides of the mold jaw (5), preferably on opposite sides of the mold jaw (5), characterized in that the mold jaw has, in addition to the first guide pin (5.1) and the second guide pin (5.2), an additional further guide pin (5.3) or several additional further guide pins (5.3, 5.4), wherein the additional further guide pin (5.3) or the additional further guide pins (5.3, 5.4) each engages or engage in a separate associated guide groove (50.3, 50.4) of the guide device, and/or cooperates or cooperates with an associated guide surface or guide edge of the guide device, namely a) forming a phased, preferably alternating active position or inactive position of individual areas of the guide device (6, 8, 8i), and/or b) forming a non- positive and/or non-positive engagement in the associated guide groove in the sense of merely secondary guidance, and/or c) with the formation of a positive and/or non-positive engagement in the associated guide groove in the sense of a parallel redundant guide or in the sense of a guide which supports the forces of the additional guide pin or the additional guide pins which are directed differently than the forces supported in the guide groove of the first guide pin and/or the second guide pin. Device according to Claim 1 , characterized in that , in order to form an active position or inactive position according to alternative a), the additional guide pin (5.3) or the additional guide pins (5.3, 5.4) engage or engage in the associated additional guide groove (50.3, 50.4) in that this guide pin (5.3) or these guide pins (5.3, 5.4) engage or engage in a positive-locking and/or non-positive-locking manner in one section of the associated guide groove (50.3, 50.4) to form the active position and engage or engage or engage in a non-positive-locking and/or non-positive-locking manner in another section of the guide groove (50.3, 50.4) to form the inactive position. Device according to Claim 1 or 2 , characterized in that in a first section of the guide device, preferably in the deflection region with adjoining inlet section (1e), the first guide pin (5.1) and the second guide pin (5.2) are in the operative position, and the third guide pin (5.3) and the fourth guide pin (5.4) are in the inoperative position, and that in a second section of the guide device, preferably in the outlet section (1a) with adjoining deflection region, the third guide pin (5.3) and the fourth guide pin (5.4) are in the operative position, and the first guide pin (5.1) and the second guide pin (5.2) are in the inoperative position. Device according to one of the preceding claims, characterized in that in order to form an inoperative position according to alternative a) and/or to form a non-positive and/or non-positive engagement according to alternative b), the guide groove (50.3, 50.4) into which the additional guide pin (5.3, 5.4) engages is designed as an extended guide groove, whose clear width is larger than the diameter of the guide pin. Device according to one of the preceding claims, characterized in that for forming an inoperative position according to alternative a) and/or for forming a non-positive and/or non-positive engagement according to alternative b), the guide groove (50.3, 50.4) into which the additional guide pin (5.3, 5.4) engages has a spring-mounted and/or spring-designed side wall and/or has a spring-mounted and/or spring-designed groove base. Device according to one of the preceding claims, characterized in that in order to form an inoperative position according to alternative a) and/or to form a non-positive and/or non-positive engagement according to alternative b), the guide groove (50.3, 50.4) into which the additional guide pin (5.3, 5.4) engages is designed as a guide groove which widens in height. Device according to one of the preceding claims, characterized in that in order to form an inoperative position according to alternative a) and/or to form a non-positive and/or non-positive engagement according to alternative b), the additional further guide pin (5.3, 5.4) is laterally spring-mounted or laterally spring-formed. Device according to one of the preceding claims, characterized in that in order to form an inoperative position according to alternative a) and/or to form a non-positive and/or non-positive engagement according to alternative b), the additional further guide pin (5.3, 5.4) is axially spring-mounted or designed to be axially spring-loaded. Device according to one of the preceding claims, preferably according to alternative c of the main claim 1 , in the sense of a guide, which supports forces of the additional guide pin or the additional guide pins which are directed differently than the forces supported in the guide groove of the first guide pin and/or the second guide pin, characterized in that the first guide pin and the second guide pin are formed on the upper side and/or on the lower side of the mold jaw, preferably aligned vertically, and that the additional guide pin or the additional guide pins are formed on the upper side and/or on the lower side of the mold jaw, preferably aligned vertically. Device according to Claim 9 , characterized in that the first guide pin and the second guide pin each engage in the associated guide groove of the guide device under support of lateral forces, preferably horizontally directed lateral forces of the guide pin, and that the additional further guide pin or the additional further guide pins engage or engage in the associated guide groove and/or interact or interact with the associated guide surface and/or guide edge of the guide device under support of axial forces of the guide pin, preferably vertically directed axial forces. Device according to one of the preceding claims, preferably according to alternative c of the main claim 1 , in the sense of a guide, which supports forces of the additional guide pin or the additional guide pins which are directed differently than the forces supported in the guide groove of the first guide pin and/or the second guide pin, characterized in that the first guide pin and the second guide pin are formed on the top side and/or on the bottom side of the mold jaw, preferably aligned vertically, and that the additional guide pin or the additional guide pins are formed on a side surface of the mold jaw which faces away from the mold surface of the mold jaw, preferably aligned horizontally. Device according to Claim 11 , characterized in that the first guide pin and the second guide pin engage in the associated guide groove while supporting lateral forces of the guide pin, preferably horizontally directed lateral forces, and that the additional further guide pin or the additional further guide pins engage or engage in the associated guide groove for supporting lateral forces of the guide pin, preferably vertically directed lateral forces, and/or interact or interact with the associated guide surface or guide edge of the guide device. Device according to one of the preceding claims, characterized in that the guide pins (5.1, 5.2, 5.3, 5.4) are each designed such that the free end of the guide engaging in the guide groove (50.1, 50.2, 50.3, 50.4) pin (5.1, 5.2, 5.3, 5.4) is designed as a motion-resistant part of the guide pin (5.1, 5.2, 5.3, 5.4). Device according to one of the preceding claims, characterized in that the guide pins (5.1, 5.2, 5.3, 5.4) are each designed such that the guide pin (5.1, 5.2, 5.3, 5.4) is pressed or welded or screwed into the mold jaws (5). Device according to one of the preceding claims, characterized in that the guide grooves (50.1, 50.2, 50.3, 50.4) for engagement of the associated guide pins (5.1, 5.2, 5.3, 5.4) form at least part of the stationary guide device (6, 8) for guiding the mold jaws (5), preferably a guide device (6) for a deflection area in the inlet section (1e) and/or a guide device for a deflection area in the outlet section (1a) and/or a guide device in the intermediate section of the corrugator in the area of the molding section (1f) for guiding the mold jaw pairs (5, 5) and/or in the area of the return (1r) for guiding the mold jaws (5) and/or in the area of the return (1r) for guiding the mold jaws (5) from the end of the molding section (1f) to the beginning of the molding section (1f). Device according to one of the preceding claims, characterized in that the stationary guide device (6, 8) for guiding the mold jaws (5) has a guide and/or tempering body device (8) which is preferably formed in the intermediate section of the corrugator in the region of the molding section (1f) for guiding the mold jaw pairs (5, 5) and/or in the region of the return guide (1r) for guiding the mold jaws (5) from the end of the molding section (1f) to the beginning of the molding section (1f). Device according to Claim 16 , characterized in that the guide and/or tempering body device (8) is formed from a plurality of tempering bodies (8i) arranged axially one behind the other in the guide direction and/or is formed from a plurality of tempering bodies (8i) arranged next to one another transversely to the guide direction, wherein it is preferably provided that one or more tempering medium channel or channels (8k) are formed in the tempering body (8i) and/or in the tempering bodies (8i), through which a tempering medium flows. Device according to Claim 17 , characterized in that guide recesses and/or flat guide surfaces having elevations and/or depressions are formed in a guide and tempering surface device, which interact with corresponding guide recesses and/or guide surfaces of the passing mold jaws (5). Device according to one of the preceding claims, characterized in that the left mold jaws (5) are guided endlessly in a left mold jaw circuit and the right mold jaws (5) are guided endlessly in a right mold jaw circuit, wherein the left mold jaw circuit and the right mold jaw circuit each have a deflection area, an inlet section designed as a deflection area with a deflection pinion device (11), a linear mold section (1f) and an outlet section designed as a deflection area with a deflection pinion device (11) and a return section (1r) connecting the outlet section and the inlet section. Device according to one of the Claims 16 until 19 , characterized in that the stationary guide device of the mold jaws is formed by a stationary guide device (6u) in each deflection region and by a stationary guide device (6z) in the intermediate section, wherein it is preferably provided that the stationary guide device (6u) in each deflection region has a frame device and/or a base plate device and/or a cover plate device on or in which the guide grooves are arranged and which has a guide surface device for slidingly guiding the underside of the passing mold jaws (5); and that the stationary guide device (6u) in the intermediate section (1z) has a guide and/or tempering body device (8) which at least partially surrounds the passing mold jaws and has guide and/or tempering surfaces for sliding guidance with the outer surfaces of the mold jaws (5). Device according to one of the Claims 16 until 20 , characterized in that the guide and/or tempering body device (8) has a plurality of guide grooves (50) which form the guide grooves for engagement of the guide pins of the mold jaws, wherein it is preferably provided that at least one of the guide grooves (50) is formed by an intermediate space between adjacent guide and/or tempering bodies (8i). Device according to one of the preceding claims, characterized in that a tooth row device (5z) is formed on a side surface of each mold jaw (5), which cooperates with a deflection pinion device in the deflection regions and/or cooperates with a pinion device in the intermediate section of the corrugator, preferably the molding section. Device according to Claim 22 , characterized in that the tooth row device (5z) is designed as an internal tooth row device which is formed by an internal row of teeth or a plurality of internal rows of teeth, wherein the teeth and/or the tooth gaps of the tooth row are each directed perpendicular to the side surface and are designed to engage in the side surface and not to protrude beyond the side surface, or that the tooth row device (5z) is designed as a lying tooth row device which is formed by an overlying row of teeth or a plurality of overlying rows of teeth, wherein the teeth and/or tooth gaps of the tooth row are each directed perpendicular to the side surface and are designed to rest on the side surface and to protrude beyond the side surface. Device according to Claim 23 , characterized in that the tooth row device (5z) designed as an internal tooth row device is formed by an internal tooth row arranged centrally or almost centrally with respect to the vertical extension of the side surface, or that the tooth row device (5z) designed as a lying tooth row device is formed by an lying tooth row arranged centrally or almost centrally with respect to the vertical extension of the side surface. Device according to Claim 23 or 24 , characterized in that the tooth row device (5z) designed as an internal tooth row device is formed by an upper inner tooth row formed in the region of the upper half of the side surface, preferably directly in the upper edge of the mold jaw (5), and by a lower inner tooth row formed in the region of the lower half of the side surface, preferably directly in the lower edge of the mold jaw (5), or that the tooth row device (5z) designed as a resting tooth row device is formed by an upper resting tooth row formed in the region of the upper half of the side surface, preferably directly in the upper edge of the mold jaw (5), and by a lower resting tooth row formed in the region of the lower half of the side surface, preferably directly in the lower edge of the mold jaw (5), wherein it is provided that the resting tooth row projects vertically from the side surface and the top of the resting tooth row is aligned with the top of the mold jaw (5) and the bottom of the resting tooth row is aligned with the bottom of the mold jaw (5). Device according to Claim 25 , characterized in that the upper inner row of teeth is arranged at a distance below the upper edge of the side surface and/or the upper edge of the mold jaw (5), wherein the distance preferably corresponds to a quarter of the vertical extension of the side surface, and/or that the lower inner row of teeth is arranged at a distance above the lower edge of the side surface and/or the lower edge of the mold jaw (5), wherein the distance preferably corresponds to a quarter of the vertical extension of the side surface. Device according to Claim 26 , characterized in that between the upper edge of the side surface or the upper edge of the mold jaw (5) and the upper edge of the inner or overlying row of teeth a flat surface is formed which is flush with the plane of the side surface of the mold jaw (5), and/or that between the lower edge of the inner or overlying row of teeth and the lower edge of the side surface or the lower edge of the mold jaw a flat surface is formed which is flush with the plane of the side surface of the mold jaw (5). Device according to one of the Claims 23 until 27 , characterized in that the inner row of teeth of the tooth row device (5z) designed as an inner row of teeth device has an engagement depth t engaging in the side surface of the mold jaw and the mold jaw has a minimum wall thickness d between the outside of the side surface of the mold jaw and the mold surface of the mold jaw in the region of the smallest wall thickness of the mold jaw (5), where: d - t ≥ t.

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