CA3114037A1 - Variable moulding jaw - Google Patents
Variable moulding jaw Download PDFInfo
- Publication number
- CA3114037A1 CA3114037A1 CA3114037A CA3114037A CA3114037A1 CA 3114037 A1 CA3114037 A1 CA 3114037A1 CA 3114037 A CA3114037 A CA 3114037A CA 3114037 A CA3114037 A CA 3114037A CA 3114037 A1 CA3114037 A1 CA 3114037A1
- Authority
- CA
- Canada
- Prior art keywords
- moulding jaw
- moulding
- jaw
- corrugator
- attachment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/252—Drive or actuation means; Transmission means; Screw supporting means
- B29C48/2528—Drive or actuation means for non-plasticising purposes, e.g. dosing unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/256—Exchangeable extruder parts
- B29C48/2562—Mounting or handling of the die
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/256—Exchangeable extruder parts
- B29C48/2566—Die parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/3001—Extrusion nozzles or dies characterised by the material or their manufacturing process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/302—Extrusion nozzles or dies being adjustable, i.e. having adjustable exit sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/303—Extrusion nozzles or dies using dies or die parts movable in a closed circuit, e.g. mounted on movable endless support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
- B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/18—Pleated or corrugated hoses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention relates to a shaping jaw unit (10) for a corrugator, comprising a shaping jaw mount (14, 14a-14h), which has a plurality of shaping surfaces (18a-18d) that are different from one another, wherein the shaping surfaces (18a-18d) are suitable for imparting a predetermined shape to a material to be shaped, and comprising a shaping jaw base element (12), on which the shaping jaw mount (14; 14a-14h) is arranged, wherein the shaping jaw mount (14; 14a-14h) is mounted on the shaping jaw base element (12) movably in relation thereto. The invention also relates to a corrugator, comprising a plurality of shaping jaw units (10), and to a corresponding method.
Description
VARIABLE MOULDING JAW
Description The invention relates to a moulding jaw unit for a corrugator.
Corrugators are used, for example, to manufacture corrugated pipes. In this case, for example, a plastics material is introduced into the corrugator and caused by overpressure and/or underpressure to come into contact with shaping surfaces, which are formed on moulding jaw units of the corrugator in order to thereby form the corrugated pipe. The corrugator usually comprises a plurality of moulding jaw units that include the shaping surfaces.
The moulding jaw units typically move on the corrugator in a circulating manner, so that depending on the rotational speed, number and size of the moulding jaw units, one and the same moulding jaw unit repeatedly passes a defined position on the corrugator after a predetermined period of time.
If the aim is to manufacture corrugated pipes having a uniform diameter but different lengths, the corrugator may be equipped with moulding jaw units in such a way that all the shaping surfaces of the moulding jaw units are identical to one another. In this way, it is possible to manufacture an endless corrugated pipe having a uniform diameter. In a subsequent processing step, this endless corrugated pipe may then be cut to the desired lengths.
If, on the other hand, the aim is to manufacture corrugated pipes which have a variable diameter over their length, for example a region having an enlarged diameter compared to the rest of the corrugated pipe, the corrugator may then be equipped with moulding jaw units which allow manufacture of corrugated pipe portions having a small diameter, manufacture of corrugated pipe portions having an increasing diameter, manufacture of corrugated pipe portions having a large diameter and manufacture of corrugated pipe portions having a decreasing diameter.
Date Recue/Date Received 2021-03-24
Description The invention relates to a moulding jaw unit for a corrugator.
Corrugators are used, for example, to manufacture corrugated pipes. In this case, for example, a plastics material is introduced into the corrugator and caused by overpressure and/or underpressure to come into contact with shaping surfaces, which are formed on moulding jaw units of the corrugator in order to thereby form the corrugated pipe. The corrugator usually comprises a plurality of moulding jaw units that include the shaping surfaces.
The moulding jaw units typically move on the corrugator in a circulating manner, so that depending on the rotational speed, number and size of the moulding jaw units, one and the same moulding jaw unit repeatedly passes a defined position on the corrugator after a predetermined period of time.
If the aim is to manufacture corrugated pipes having a uniform diameter but different lengths, the corrugator may be equipped with moulding jaw units in such a way that all the shaping surfaces of the moulding jaw units are identical to one another. In this way, it is possible to manufacture an endless corrugated pipe having a uniform diameter. In a subsequent processing step, this endless corrugated pipe may then be cut to the desired lengths.
If, on the other hand, the aim is to manufacture corrugated pipes which have a variable diameter over their length, for example a region having an enlarged diameter compared to the rest of the corrugated pipe, the corrugator may then be equipped with moulding jaw units which allow manufacture of corrugated pipe portions having a small diameter, manufacture of corrugated pipe portions having an increasing diameter, manufacture of corrugated pipe portions having a large diameter and manufacture of corrugated pipe portions having a decreasing diameter.
Date Recue/Date Received 2021-03-24
- 2 -However, due to the system, i.e. due to the operating principle of the corrugator, it is possible to manufacture only an endless corrugated pipe, in which the enlarged diameter occurs in a constant periodic sequence. If, for example, corrugated pipes are desired which include exactly one portion having an enlarged diameter, then these can only be manufactured in a single length without generating relatively large amounts of material waste.
However, if the aim is to manufacture different corrugated pipes which, for example, include a different number of portions having an enlarged diameter, but the same overall length, it is laborious to reconfigure the fittings of the corrugator for each corrugated pipe.
Due to this high expenditure of time and costs for re-equipping a corrugator, small series or even single unit production of specific corrugated pipes is often not possible.
It is therefore the object of the present invention to provide a moulding jaw unit for a corrugator, or a corrugator, which makes it possible to flexibly adapt a design of a corrugated pipe to be manufactured and to thereby reduce the set-up costs of the corrugator.
This object is achieved in a first aspect by a moulding jaw unit for a corrugator, comprising a moulding jaw attachment that includes a plurality of mutually different shaping surfaces, the shaping surfaces being suitable for imparting a predetermined shape to a material to be moulded, and a moulding jaw base element on which the moulding jaw attachment is arranged, wherein the moulding jaw attachment is mounted on the moulding jaw base element so as to be displaceable relative thereto.
Because the moulding jaw attachment that includes the plurality of shaping surfaces is displaceable relative to the moulding jaw base element, which is held on the corrugator, a design of a corrugated pipe to be manufactured Date Recue/Date Received 2021-03-24
However, if the aim is to manufacture different corrugated pipes which, for example, include a different number of portions having an enlarged diameter, but the same overall length, it is laborious to reconfigure the fittings of the corrugator for each corrugated pipe.
Due to this high expenditure of time and costs for re-equipping a corrugator, small series or even single unit production of specific corrugated pipes is often not possible.
It is therefore the object of the present invention to provide a moulding jaw unit for a corrugator, or a corrugator, which makes it possible to flexibly adapt a design of a corrugated pipe to be manufactured and to thereby reduce the set-up costs of the corrugator.
This object is achieved in a first aspect by a moulding jaw unit for a corrugator, comprising a moulding jaw attachment that includes a plurality of mutually different shaping surfaces, the shaping surfaces being suitable for imparting a predetermined shape to a material to be moulded, and a moulding jaw base element on which the moulding jaw attachment is arranged, wherein the moulding jaw attachment is mounted on the moulding jaw base element so as to be displaceable relative thereto.
Because the moulding jaw attachment that includes the plurality of shaping surfaces is displaceable relative to the moulding jaw base element, which is held on the corrugator, a design of a corrugated pipe to be manufactured Date Recue/Date Received 2021-03-24
- 3 -may be changed without having to exchange a corresponding moulding jaw unit, i.e. having to remove an entire moulding jaw unit from the corrugator, as is customary in one-piece moulding jaw units of the prior art. In the example of a corrugated pipe described at the outset, in particular, which comprises a portion having an enlarged diameter, a respective moulding jaw attachment may have four shaping surfaces, namely a shaping surface for a corrugated pipe portion having a first diameter, a shaping surface for a corrugated pipe portion having an increasing diameter, a shaping surface for a corrugated pipe portion having a decreasing diameter and a shaping surface for a corrugated pipe portion having a second diameter which is larger than the first diameter.
Depending on how the corrugated pipe to be manufactured is to be formed by a respective moulding jaw unit, the moulding jaw attachment may be displaced relative to the moulding jaw base element in such a way that the corresponding shaping surface becomes part of the production chain of the corrugated pipe, i.e. comes into contact with the material from which the corrugated pipe is formed.
Instead of the four shaping surfaces described here, the moulding jaw attachment may, of course, also include more or fewer shaping surfaces, depending on the variety of products to be covered by a single moulding jaw unit.
In a development of the invention, the moulding jaw attachment may be displaceable transationally relative to the moulding jaw base element along precisely one axis or displaceable rotationally about precisely one axis. With respect to the first alternative, this may be implemented, for example, by connecting the moulding jaw attachment to the moulding jaw base element via a sliding and/or rolling means. For example, the moulding jaw attachment may be connected to the moulding jaw base element via a dovetail connection, so that the moulding jaw attachment may only be displaced back Date Recue/Date Received 2021-03-24
Depending on how the corrugated pipe to be manufactured is to be formed by a respective moulding jaw unit, the moulding jaw attachment may be displaced relative to the moulding jaw base element in such a way that the corresponding shaping surface becomes part of the production chain of the corrugated pipe, i.e. comes into contact with the material from which the corrugated pipe is formed.
Instead of the four shaping surfaces described here, the moulding jaw attachment may, of course, also include more or fewer shaping surfaces, depending on the variety of products to be covered by a single moulding jaw unit.
In a development of the invention, the moulding jaw attachment may be displaceable transationally relative to the moulding jaw base element along precisely one axis or displaceable rotationally about precisely one axis. With respect to the first alternative, this may be implemented, for example, by connecting the moulding jaw attachment to the moulding jaw base element via a sliding and/or rolling means. For example, the moulding jaw attachment may be connected to the moulding jaw base element via a dovetail connection, so that the moulding jaw attachment may only be displaced back Date Recue/Date Received 2021-03-24
- 4 -and forth relative to the moulding jaw base element along the dovetail connection (this direction may also be referred to as the "shaping surface displacement direction").
The relative displacement between the moulding jaw attachment and the moulding jaw base element in this case may be assigned a locking device such as, for example, a latching device, it being possible, in particular, to provide the same number of latch positions as shaping surfaces. The latching device may, in particular, be arranged in such a way that each respective central axis of the shaping surfaces assigned to a respective latching device comes to rest at an identical position relative to the moulding jaw base element when the latching device engages in such a way that this shaping surface becomes part of the above-mentioned production chain. It may thus be ensured that a central axis of a corrugated pipe to be manufactured continues on without any significant offset even after the moulding jaw unit has been switched to a different shaping surface.
In this case, the plurality of shaping surfaces on the moulding jaw attachment may be arranged on the same surface. If, for example, the moulding jaw attachment has a flat surface on its side opposite the sliding and/or rolling means, then all of the shaping surfaces may be arranged on this flat surface.
The shaping surfaces may, in particular, be consecutive in the direction in which the moulding jaw attachment is displaceable relative to the moulding jaw base element. In addition, each of the above-mentioned central axes of respective shaping surfaces may be orthogonal to this displacement direction of the moulding jaw attachment relative to the moulding jaw base element.
Advantageously, the surface may extend substantially parallel to the displacement direction of the moulding jaw attachment relative to the moulding jaw base element, so that a depth extension of a respective moulding jaw unit from the surface that includes the shaping surfaces to an opposite end of the moulding jaw unit remains constant, regardless of the Date Recue/Date Received 2021-03-24
The relative displacement between the moulding jaw attachment and the moulding jaw base element in this case may be assigned a locking device such as, for example, a latching device, it being possible, in particular, to provide the same number of latch positions as shaping surfaces. The latching device may, in particular, be arranged in such a way that each respective central axis of the shaping surfaces assigned to a respective latching device comes to rest at an identical position relative to the moulding jaw base element when the latching device engages in such a way that this shaping surface becomes part of the above-mentioned production chain. It may thus be ensured that a central axis of a corrugated pipe to be manufactured continues on without any significant offset even after the moulding jaw unit has been switched to a different shaping surface.
In this case, the plurality of shaping surfaces on the moulding jaw attachment may be arranged on the same surface. If, for example, the moulding jaw attachment has a flat surface on its side opposite the sliding and/or rolling means, then all of the shaping surfaces may be arranged on this flat surface.
The shaping surfaces may, in particular, be consecutive in the direction in which the moulding jaw attachment is displaceable relative to the moulding jaw base element. In addition, each of the above-mentioned central axes of respective shaping surfaces may be orthogonal to this displacement direction of the moulding jaw attachment relative to the moulding jaw base element.
Advantageously, the surface may extend substantially parallel to the displacement direction of the moulding jaw attachment relative to the moulding jaw base element, so that a depth extension of a respective moulding jaw unit from the surface that includes the shaping surfaces to an opposite end of the moulding jaw unit remains constant, regardless of the Date Recue/Date Received 2021-03-24
- 5 -positioning of the moulding jaw attachment relative to the moulding jaw base element.
With respect to the second alternative mentioned above, this may be implemented, for example, in that the moulding jaw attachment is rotatably mounted on the moulding jaw base element.
The moulding jaw attachment in this case may have a polygonal cross section and each of the plurality of shaping surfaces may be arranged on a different surface of the polygonal moulding jaw attachment. A polygon may advantageously be selected which has as many sides as there are mutually differing shaping surfaces. For the example of four mutually different shaping surfaces mentioned at the outset, a moulding jaw attachment having a square cross section could therefore result. Depending on the desired design of the corrugated pipe to be manufactured, the moulding jaw attachment may be rotated in such a way that the corresponding shaping surface points to the portion of the corrugator at which the corrugated pipe is formed.
In a second aspect, the present invention relates to a corrugator comprising a plurality of moulding jaws, which comprises at least a plurality of moulding jaw units, in particular moulding jaw units according to the invention, wherein each moulding jaw unit has a moulding jaw attachment which comprises a plurality of mutually different shaping surfaces, wherein the shaping surfaces are suitable for imparting a predetermined shape to a material to be moulded, and comprises a moulding jaw base element on which the moulding jaw attachment is arranged, wherein the moulding jaw attachment is mounted on the moulding jaw base element so as to be displaceable relative thereto, and a moulding jaw carrier on which the moulding jaw base elements are held.
It should already be mentioned at this point that the features and advantages described with respect to the moulding jaw unit according to the invention may also be used with respect to the corrugator according to the invention Date Recue/Date Received 2021-03-24
With respect to the second alternative mentioned above, this may be implemented, for example, in that the moulding jaw attachment is rotatably mounted on the moulding jaw base element.
The moulding jaw attachment in this case may have a polygonal cross section and each of the plurality of shaping surfaces may be arranged on a different surface of the polygonal moulding jaw attachment. A polygon may advantageously be selected which has as many sides as there are mutually differing shaping surfaces. For the example of four mutually different shaping surfaces mentioned at the outset, a moulding jaw attachment having a square cross section could therefore result. Depending on the desired design of the corrugated pipe to be manufactured, the moulding jaw attachment may be rotated in such a way that the corresponding shaping surface points to the portion of the corrugator at which the corrugated pipe is formed.
In a second aspect, the present invention relates to a corrugator comprising a plurality of moulding jaws, which comprises at least a plurality of moulding jaw units, in particular moulding jaw units according to the invention, wherein each moulding jaw unit has a moulding jaw attachment which comprises a plurality of mutually different shaping surfaces, wherein the shaping surfaces are suitable for imparting a predetermined shape to a material to be moulded, and comprises a moulding jaw base element on which the moulding jaw attachment is arranged, wherein the moulding jaw attachment is mounted on the moulding jaw base element so as to be displaceable relative thereto, and a moulding jaw carrier on which the moulding jaw base elements are held.
It should already be mentioned at this point that the features and advantages described with respect to the moulding jaw unit according to the invention may also be used with respect to the corrugator according to the invention Date Recue/Date Received 2021-03-24
- 6 -and vice versa.
Moulding jaw attachments of moulding jaw units, which form parts of a mould that defines a shape of a corrugated pipe to be manufactured, may preferably be designed to be identical to one another. Thus, these two moulding jaw attachments, which abut each other at a predefined point of the corrugator to form the above-mentioned mould, may be displaced in the same direction and by the same amount in order to include half-moulds that match each other again, which are able to contact the material of the corrugated pipe to be manufactured.
In one development of the present invention, the moulding jaw carrier may be designed as a chain or as a guide device. The moulding jaw units may, in particular, be connected to the moulding jaw carrier in a detachable manner.
The moulding jaw units held on the moulding jaw carrier may be operatively mounted on the corrugator by the moulding jaw carrier so as to be displaceable along a, for example horizontal, conveying direction. In the case of the moulding jaw carrier designed as a chain, the moulding jaw units may be actively displaced over the entire rotation thereof on the corrugator by the moulding jaw carrier, i.e. in every position of a respective moulding jaw unit on the corrugator, a driving force may act on a respective moulding jaw unit via the moulding jaw carrier, which may displace the moulding jaw unit on the corrugator. In the case of the moulding jaw carrier designed as a guide device, the moulding jaw units may only be driven portion by portion. For example, the moulding jaw units may be engaged with the moulding jaw carrier designed as a guide rail in such a way that they are displaceable only along one axis of the guide rail. In this case, the moulding jaw units may only be driven passively, in particular at least in the region of the corrugator in which the moulding jaw units abut against respective complementary moulding jaw units, in order to form a mould for the corrugated pipe to be manufactured. This means, a drive of the moulding jaw units along the moulding jaw carrier may be arranged on a portion of the corrugator that Date Recue/Date Received 2021-03-24
Moulding jaw attachments of moulding jaw units, which form parts of a mould that defines a shape of a corrugated pipe to be manufactured, may preferably be designed to be identical to one another. Thus, these two moulding jaw attachments, which abut each other at a predefined point of the corrugator to form the above-mentioned mould, may be displaced in the same direction and by the same amount in order to include half-moulds that match each other again, which are able to contact the material of the corrugated pipe to be manufactured.
In one development of the present invention, the moulding jaw carrier may be designed as a chain or as a guide device. The moulding jaw units may, in particular, be connected to the moulding jaw carrier in a detachable manner.
The moulding jaw units held on the moulding jaw carrier may be operatively mounted on the corrugator by the moulding jaw carrier so as to be displaceable along a, for example horizontal, conveying direction. In the case of the moulding jaw carrier designed as a chain, the moulding jaw units may be actively displaced over the entire rotation thereof on the corrugator by the moulding jaw carrier, i.e. in every position of a respective moulding jaw unit on the corrugator, a driving force may act on a respective moulding jaw unit via the moulding jaw carrier, which may displace the moulding jaw unit on the corrugator. In the case of the moulding jaw carrier designed as a guide device, the moulding jaw units may only be driven portion by portion. For example, the moulding jaw units may be engaged with the moulding jaw carrier designed as a guide rail in such a way that they are displaceable only along one axis of the guide rail. In this case, the moulding jaw units may only be driven passively, in particular at least in the region of the corrugator in which the moulding jaw units abut against respective complementary moulding jaw units, in order to form a mould for the corrugated pipe to be manufactured. This means, a drive of the moulding jaw units along the moulding jaw carrier may be arranged on a portion of the corrugator that Date Recue/Date Received 2021-03-24
- 7 -differs from the region of the manufacture of the corrugated pipe, for example at the longitudinal ends of the corrugator or at the longitudinal ends of the region at which the corrugated pipe is manufactured. The moulding jaw units driven by this portion come into lateral contact with the respective adjacent, non-driven moulding jaw units and push them through the moulding jaw carrier. It may thus be ensured that, at least in the region in which the moulding jaw units are passively pushed further, there is no gap, or at least a gap that is negligible in terms of the manufacture of the corrugated pipe, present between laterally adjacent moulding jaw units.
This direction along which the moulding jaw units are displaced during the production of a corrugated pipe or in which the corrugated pipe is manufactured may also be referred to as the "production direction".
The moulding jaw attachment may be advantageously displaced relative to the moulding jaw base element in the operating state of the moulding jaw unit along a direction substantially orthogonal to a production direction of the corrugator or rotatable about an axis substantially parallel to the production direction of the corrugator. Corrugators that have a horizontal production direction as well as corrugators that have a vertical production direction are known from the prior art. Accordingly, a translational displacement direction of a moulding jaw attachment may be vertical in a corrugator with a horizontal production direction and horizontal in a corrugator with a vertical production direction. In the case of a corrugator with a horizontal production direction, an axis of rotation of a moulding jaw attachment relative to a moulding jaw base element may also be oriented horizontally, in particular, parallel to the production direction. However, a right-angled orientation of the axis of rotation to the direction of production is, of course, also conceivable. The axis of rotation may also be oriented orthogonally, i.e. vertically in the case of a corrugator with a horizontal production direction. The same applies here to a corrugator with a vertical production direction.
Date Recue/Date Received 2021-03-24
This direction along which the moulding jaw units are displaced during the production of a corrugated pipe or in which the corrugated pipe is manufactured may also be referred to as the "production direction".
The moulding jaw attachment may be advantageously displaced relative to the moulding jaw base element in the operating state of the moulding jaw unit along a direction substantially orthogonal to a production direction of the corrugator or rotatable about an axis substantially parallel to the production direction of the corrugator. Corrugators that have a horizontal production direction as well as corrugators that have a vertical production direction are known from the prior art. Accordingly, a translational displacement direction of a moulding jaw attachment may be vertical in a corrugator with a horizontal production direction and horizontal in a corrugator with a vertical production direction. In the case of a corrugator with a horizontal production direction, an axis of rotation of a moulding jaw attachment relative to a moulding jaw base element may also be oriented horizontally, in particular, parallel to the production direction. However, a right-angled orientation of the axis of rotation to the direction of production is, of course, also conceivable. The axis of rotation may also be oriented orthogonally, i.e. vertically in the case of a corrugator with a horizontal production direction. The same applies here to a corrugator with a vertical production direction.
Date Recue/Date Received 2021-03-24
- 8 -The corrugator may comprise an adjustment device, which is adapted to displace the moulding jaw attachment relative to the moulding jaw base element by a predetermined amount. Depending on the design of the moulding jaw unit or the type of displacement of the moulding jaw attachment relative to the moulding jaw base element, the adjustment device may displace or rotate a respective moulding jaw attachment relative to the moulding jaw base element. As previously described with respect to the moulding jaw unit according to the invention, a latching device may be provided, which defines at least one position of the moulding jaw attachment relative to the moulding jaw base element or holds it with a defined holding force.
The adjustment device may be designed as at least one displaceable stop with which a portion of the moulding jaw attachment comes into contact so that the moulding jaw attachment is displaced relative to the moulding jaw base element in accordance with the preset position of the stop. This stop may, for example, be displaceable in the displacement direction of the moulding jaw attachment or of the shaping surfaces. Furthermore, the stop may be adapted to be displaceable step by step in such a way that each step corresponds to a predetermined position of the moulding jaw attachment relative to the moulding jaw base element coinciding, for example, with a defined position of the latching device. In this case, the stop may interact with a respective moulding jaw attachment in such a way that a displacement of a respective moulding jaw unit on the moulding jaw carrier transversely to the stop causes the respective moulding jaw attachment to slide off the stop and thus the displacement of the moulding jaw attachment up to the predetermined position.
Alternatively or in addition, it may be provided that the adjustment device may be adapted to be displaced over a predefined distance together with at least one moulding jaw unit to be adjusted, so that, for example, no relative movement takes place between the adjustment device and the respective Date Recue/Date Received 2021-03-24
The adjustment device may be designed as at least one displaceable stop with which a portion of the moulding jaw attachment comes into contact so that the moulding jaw attachment is displaced relative to the moulding jaw base element in accordance with the preset position of the stop. This stop may, for example, be displaceable in the displacement direction of the moulding jaw attachment or of the shaping surfaces. Furthermore, the stop may be adapted to be displaceable step by step in such a way that each step corresponds to a predetermined position of the moulding jaw attachment relative to the moulding jaw base element coinciding, for example, with a defined position of the latching device. In this case, the stop may interact with a respective moulding jaw attachment in such a way that a displacement of a respective moulding jaw unit on the moulding jaw carrier transversely to the stop causes the respective moulding jaw attachment to slide off the stop and thus the displacement of the moulding jaw attachment up to the predetermined position.
Alternatively or in addition, it may be provided that the adjustment device may be adapted to be displaced over a predefined distance together with at least one moulding jaw unit to be adjusted, so that, for example, no relative movement takes place between the adjustment device and the respective Date Recue/Date Received 2021-03-24
- 9 -moulding jaw unit during the joint displacement. The adjustment device in this case may be adapted to displace a respective moulding jaw attachment relative to the moulding jaw base element in a desired manner. After this displacement, the adjustment device may return to a start of the predefined distance over which the adjustment device together with a respective moulding jaw unit is displaced, in order in this way to set, for example, at least one subsequent moulding jaw unit.
The adjustment device in this case may be designed as a plurality of adjustment units, each adjustment unit being assigned to a moulding jaw element, and each adjustment unit being adapted to displace the moulding jaw attachment relative to the moulding jaw base element. In this way, an interaction between a number of adjustment units of the adjustment device and the distance over which the adjustment device together with the moulding jaw units to be adjusted is displaced may, in particular, be selected such that a first set of moulding jaw units, which are able to be adjusted simultaneously by the adjustment device, and a second set of moulding jaw units, which are able to be adjusted simultaneously immediately after the adjustment of the first set of moulding jaw units, are directly consecutive.
In this way, the adjustment device may be adapted to be able to engage with all of the moulding jaw units of the corrugator that are assigned to this adjustment device during a single rotation of the moulding jaw units on the corrugator.
In one advantageous embodiment of the present invention, two moulding jaw attachments, which together form a mould, may be provided with projections and recesses which are adapted to engage with one another when the moulding jaw attachments operatively abut one another. On the one hand, this may ensure that small orientation inaccuracies between two shaping surfaces forming a mould for a portion of the corrugated pipe to be manufactured may be compensated for by means of an engagement of respective projections and recesses. On the other hand, an adjustment Date Recue/Date Received 2021-03-24
The adjustment device in this case may be designed as a plurality of adjustment units, each adjustment unit being assigned to a moulding jaw element, and each adjustment unit being adapted to displace the moulding jaw attachment relative to the moulding jaw base element. In this way, an interaction between a number of adjustment units of the adjustment device and the distance over which the adjustment device together with the moulding jaw units to be adjusted is displaced may, in particular, be selected such that a first set of moulding jaw units, which are able to be adjusted simultaneously by the adjustment device, and a second set of moulding jaw units, which are able to be adjusted simultaneously immediately after the adjustment of the first set of moulding jaw units, are directly consecutive.
In this way, the adjustment device may be adapted to be able to engage with all of the moulding jaw units of the corrugator that are assigned to this adjustment device during a single rotation of the moulding jaw units on the corrugator.
In one advantageous embodiment of the present invention, two moulding jaw attachments, which together form a mould, may be provided with projections and recesses which are adapted to engage with one another when the moulding jaw attachments operatively abut one another. On the one hand, this may ensure that small orientation inaccuracies between two shaping surfaces forming a mould for a portion of the corrugated pipe to be manufactured may be compensated for by means of an engagement of respective projections and recesses. On the other hand, an adjustment Date Recue/Date Received 2021-03-24
- 10 -device may be provided at a position of the corrugator at which two opposing moulding jaw attachments are already engaged with one another via their respective projections and recesses, so that a displacement of one of the two moulding jaw attachments causes a displacement of the respective other moulding jaw attachment. Thus, for example, a single adjustment device for the corrugator may be sufficient.
Alternatively or in addition, at least two moulding jaw attachments arranged one after the other, in particular on the same moulding jaw carrier, as viewed in a production direction of the corrugator, may be provided with projections and recesses that are adapted to engage with one another when the moulding jaw attachments operatively abut one another. That which is described above for two opposing moulding jaw attachments may be similarly applied here for two moulding jaw attachments arranged one after the other or next to one another. The displacement of a comparatively large number of moulding jaw attachments simultaneously relative to respective moulding jaw base elements may be achieved by displacing a single moulding jaw attachment, or at least a small number of moulding jaw attachments. This may be particularly advantageous if such a "chain" of moulding jaw units or of shaping surfaces of moulding jaw attachments not only have a predefined sequence of shaping surfaces for a desired corrugated pipe in the course of the shaping surfaces that contribute to the formation of the corrugated pipe, but also have a series of successive and mutually matching shaping surfaces, which are arranged on respective moulding jaw attachments above or below the shaping surfaces, which contribute specifically to the formation of the corrugated pipe.
This is to be illustrated with reference to an example. If, for example, a corrugated pipe having a constant diameter is manufactured in an endless manner, this may mean that all the shaping surfaces involved in the manufacture of the corrugated pipe have the same diameter or are identical to one another. If it is now desired to provide a portion having an enlarged Date Recue/Date Received 2021-03-24
Alternatively or in addition, at least two moulding jaw attachments arranged one after the other, in particular on the same moulding jaw carrier, as viewed in a production direction of the corrugator, may be provided with projections and recesses that are adapted to engage with one another when the moulding jaw attachments operatively abut one another. That which is described above for two opposing moulding jaw attachments may be similarly applied here for two moulding jaw attachments arranged one after the other or next to one another. The displacement of a comparatively large number of moulding jaw attachments simultaneously relative to respective moulding jaw base elements may be achieved by displacing a single moulding jaw attachment, or at least a small number of moulding jaw attachments. This may be particularly advantageous if such a "chain" of moulding jaw units or of shaping surfaces of moulding jaw attachments not only have a predefined sequence of shaping surfaces for a desired corrugated pipe in the course of the shaping surfaces that contribute to the formation of the corrugated pipe, but also have a series of successive and mutually matching shaping surfaces, which are arranged on respective moulding jaw attachments above or below the shaping surfaces, which contribute specifically to the formation of the corrugated pipe.
This is to be illustrated with reference to an example. If, for example, a corrugated pipe having a constant diameter is manufactured in an endless manner, this may mean that all the shaping surfaces involved in the manufacture of the corrugated pipe have the same diameter or are identical to one another. If it is now desired to provide a portion having an enlarged Date Recue/Date Received 2021-03-24
- 11 -diameter at any point in time during the manufacture of the endless corrugated pipe, a chain of laterally engaging moulding jaw attachments may be displaced in such a way that the shaping surfaces of these moulding jaw attachments previously not involved in the manufacture of the corrugated tube take the place of the shaping surfaces previously involved in the manufacture of the corrugated pipe. For example, this chain may consist of four moulding jaw attachments or shaping surfaces, whereby, in chronological sequence according to the manufacture of the corrugated pipe, a first shaping surface defines a corrugated pipe portion having an increasing diameter, a second and third shaping surface defines a respective corrugated pipe portion having a constant, enlarged diameter and a fourth shaping surface defines a corrugated pipe portion having a decreasing diameter.
Once the corrugated pipe portion having an enlarged diameter is manufactured, the above-described chain of moulding jaw attachments may again be displaced out of the row of shaping surfaces involved, so that an endless corrugated pipe having a constant cross section may again be manufactured, which is smaller compared to the portion having an enlarged diameter.
This process may, of course, be repeated as desired and/or a plurality of such "connectable" chains of moulding jaw attachments may be arranged in order to be able to manufacture corrugated pipes having varying diameters in a very flexible manner.
Such a "connection" of a corresponding chain of moulding jaw attachments may advantageously take place on one side of the corrugator (and possibly also on a mirrored opposite side of the corrugator), on which the moulding jaw attachments assigned to such a chain of shaping surfaces are not involved in the manufacture of the corrugated pipe.
It should be added at this point that the term "constant diameter of a corrugated pipe" is intended to express that a diameter of a corrugated pipe Date Recue/Date Received 2021-03-24
Once the corrugated pipe portion having an enlarged diameter is manufactured, the above-described chain of moulding jaw attachments may again be displaced out of the row of shaping surfaces involved, so that an endless corrugated pipe having a constant cross section may again be manufactured, which is smaller compared to the portion having an enlarged diameter.
This process may, of course, be repeated as desired and/or a plurality of such "connectable" chains of moulding jaw attachments may be arranged in order to be able to manufacture corrugated pipes having varying diameters in a very flexible manner.
Such a "connection" of a corresponding chain of moulding jaw attachments may advantageously take place on one side of the corrugator (and possibly also on a mirrored opposite side of the corrugator), on which the moulding jaw attachments assigned to such a chain of shaping surfaces are not involved in the manufacture of the corrugated pipe.
It should be added at this point that the term "constant diameter of a corrugated pipe" is intended to express that a diameter of a corrugated pipe Date Recue/Date Received 2021-03-24
- 12 -remains constant over a portion under consideration without taking into account the changes in diameter resulting from the corrugation troughs and crests of the wall of the corrugated pipe. For this purpose, it may be irrelevant whether the inside diameter, the outside diameter or an average diameter of the corrugated wall of the corrugated pipe over the portion of the corrugated pipe under consideration is used, as long as the wall thickness of the corrugated pipe also remains uniform. The same naturally applies to portions of the corrugated pipe having an increasing or decreasing diameter.
In a third aspect, the present invention relates to a method for changing a shape of a corrugator defined by shaping surfaces, wherein the method comprises the steps:
- providing a corrugator comprising a plurality of moulding jaws, which comprises at least a plurality of moulding jaw units, in particular moulding jaw units according to the invention, wherein each moulding jaw unit comprises a moulding jaw attachment which includes a plurality of mutually different shaping surfaces, wherein the shaping surfaces are suitable for imparting a predetermined shape to a material to be moulded, and a moulding jaw base element on which the moulding jaw attachment is arranged, wherein the moulding jaw attachment is mounted on the moulding jaw base element so as to be displaceable relative thereto, and a moulding jaw carrier on which the moulding jaw base elements are held;
- driving the moulding jaw base elements such that they move along a conveying direction;
- driving at least one moulding jaw attachment during the movement thereof in the conveying direction, so that the moulding jaw attachment is displaced from a first position, which is assigned to a first shaping surface, into a second position, which is assigned to a second shaping surface.
It should be noted that all of the features and advantages described for the moulding jaw unit according to the invention and/or the corrugator according Date Recue/Date Received 2021-03-24
In a third aspect, the present invention relates to a method for changing a shape of a corrugator defined by shaping surfaces, wherein the method comprises the steps:
- providing a corrugator comprising a plurality of moulding jaws, which comprises at least a plurality of moulding jaw units, in particular moulding jaw units according to the invention, wherein each moulding jaw unit comprises a moulding jaw attachment which includes a plurality of mutually different shaping surfaces, wherein the shaping surfaces are suitable for imparting a predetermined shape to a material to be moulded, and a moulding jaw base element on which the moulding jaw attachment is arranged, wherein the moulding jaw attachment is mounted on the moulding jaw base element so as to be displaceable relative thereto, and a moulding jaw carrier on which the moulding jaw base elements are held;
- driving the moulding jaw base elements such that they move along a conveying direction;
- driving at least one moulding jaw attachment during the movement thereof in the conveying direction, so that the moulding jaw attachment is displaced from a first position, which is assigned to a first shaping surface, into a second position, which is assigned to a second shaping surface.
It should be noted that all of the features and advantages described for the moulding jaw unit according to the invention and/or the corrugator according Date Recue/Date Received 2021-03-24
- 13 -to the invention apply to the method according to the invention and vice versa. For this reason, explicit reference is made at this point to the above description of the corrugator according to the invention and possibly also the moulding jaw unit according to the invention with regard to the mode of operation and advantages of the method according to the invention.
The invention is described in greater detail below on the basis of exemplary embodiments with reference to the accompanying drawings, in which Figure 1 shows a perspective view of a first embodiment of a moulding jaw unit according to the invention;
Figure 2 shows a side view of the moulding jaw unit according to the invention from Figure 1;
Figure 3 shows a perspective view of a second embodiment of a moulding jaw unit according to the invention;
Figure 4 shows a schematic top view of a corrugator according to the invention;
Figure 5 shows a cross-sectional view of the corrugator from Figure 4 according to the invention; and Figures 6a through 6d show a schematic sequence in accordance with the method according to the invention for changing a shape of a corrugator defined by shaping surfaces.
In Figure 1, a moulding jaw unit according to the invention is generally provided with the reference numeral 10. The moulding jaw unit 10 comprises a moulding jaw base element 12 and a moulding jaw attachment 14. The moulding jaw attachment 14 is mounted on the moulding jaw base element Date Recue/Date Received 2021-03-24
The invention is described in greater detail below on the basis of exemplary embodiments with reference to the accompanying drawings, in which Figure 1 shows a perspective view of a first embodiment of a moulding jaw unit according to the invention;
Figure 2 shows a side view of the moulding jaw unit according to the invention from Figure 1;
Figure 3 shows a perspective view of a second embodiment of a moulding jaw unit according to the invention;
Figure 4 shows a schematic top view of a corrugator according to the invention;
Figure 5 shows a cross-sectional view of the corrugator from Figure 4 according to the invention; and Figures 6a through 6d show a schematic sequence in accordance with the method according to the invention for changing a shape of a corrugator defined by shaping surfaces.
In Figure 1, a moulding jaw unit according to the invention is generally provided with the reference numeral 10. The moulding jaw unit 10 comprises a moulding jaw base element 12 and a moulding jaw attachment 14. The moulding jaw attachment 14 is mounted on the moulding jaw base element Date Recue/Date Received 2021-03-24
-14-12 in such a way that it may only be displaced along the axis A. In the exemplary embodiment shown in Figure 1, the moulding jaw attachment 14 is connected to the moulding jaw base element 12 via a dovetail connection 16.
The moulding jaw attachment 14 here includes four shaping surfaces 18a through 18d, wherein the shaping surface 18a is able to define one half of a mould for a portion of a corrugated pipe to be produced, in which the corrugated pipe is tapered from a larger outer diameter D2 to a smaller outer diameter Dl. This depends, of course, on which side of a corrugator this moulding jaw unit 10 is used and in which direction the moulding jaw unit 10 is driven with respect to the manufacture of a corrugated pipe. Thus, in another application, the shaping surface 18a could also be adapted to expand a corrugated pipe having an outer diameter D1 to a larger outer diameter D2. With respect to the first preceding specific application, the shaping surface 18b of the moulding jaw attachment 14 shown here is adapted to provide half of a mould for a portion of a corrugated pipe, in which the outer diameter of the corrugated pipe expands from the outer diameter D1 to the larger outer diameter D2. The shaping surface 18c forms half of a mould which is adapted to form a portion of a corrugated pipe having a constant outer diameter D2, and the shaping surface 18d forms half of a mould which is adapted to form a portion of a corrugated pipe having a constant outer diameter Dl.
The profile of the shaping surfaces 18a through 18d is again clearly apparent in the side view of Figure 2. It is further apparent that arranged on both sides of the dovetail connection 16 are recesses 20 in the moulding jaw base element 12, in which, for example, a latching device 22 is arranged, which is adapted to hold the moulding jaw attachment 14 at predefined positions relative to the moulding jaw base element 12 in such a way that a displacement of the moulding jaw attachment 14 relative to the moulding jaw base element 12 is only allowed by overcoming a predetermined holding force.
Date Recue/Date Received 2021-03-24
The moulding jaw attachment 14 here includes four shaping surfaces 18a through 18d, wherein the shaping surface 18a is able to define one half of a mould for a portion of a corrugated pipe to be produced, in which the corrugated pipe is tapered from a larger outer diameter D2 to a smaller outer diameter Dl. This depends, of course, on which side of a corrugator this moulding jaw unit 10 is used and in which direction the moulding jaw unit 10 is driven with respect to the manufacture of a corrugated pipe. Thus, in another application, the shaping surface 18a could also be adapted to expand a corrugated pipe having an outer diameter D1 to a larger outer diameter D2. With respect to the first preceding specific application, the shaping surface 18b of the moulding jaw attachment 14 shown here is adapted to provide half of a mould for a portion of a corrugated pipe, in which the outer diameter of the corrugated pipe expands from the outer diameter D1 to the larger outer diameter D2. The shaping surface 18c forms half of a mould which is adapted to form a portion of a corrugated pipe having a constant outer diameter D2, and the shaping surface 18d forms half of a mould which is adapted to form a portion of a corrugated pipe having a constant outer diameter Dl.
The profile of the shaping surfaces 18a through 18d is again clearly apparent in the side view of Figure 2. It is further apparent that arranged on both sides of the dovetail connection 16 are recesses 20 in the moulding jaw base element 12, in which, for example, a latching device 22 is arranged, which is adapted to hold the moulding jaw attachment 14 at predefined positions relative to the moulding jaw base element 12 in such a way that a displacement of the moulding jaw attachment 14 relative to the moulding jaw base element 12 is only allowed by overcoming a predetermined holding force.
Date Recue/Date Received 2021-03-24
- 15 -The holding positions of the latching device 22 or the moulding jaw attachment 14 relative to the moulding jaw base element 12 are arranged here in such a way that in each holding position, i.e. when the latching device 22 engages, a corresponding central axis 24a through 24d, which is assigned to a respective shaping surface 18a through 18d, is arranged at the same position relative to the moulding jaw base element 12 as a corresponding central axis 24a through 24d of a shaping surface 18a through 18d, which was previously arranged at this point when the latching device 22 was engaged. Such a position is indicated by way of example in Figure 1 by the marking 26, at the height of which a corresponding central axis 24a through 24d may be arranged when the latching device 22 is engaged. This may correspond, for example, to a height at which a respective one of the shaping surfaces 18a through 18d may be involved in the manufacture of a corrugated pipe.
In the embodiment shown in Figures 1 and 2, all of the shaping surfaces 18a through 18d are arranged on a common flat surface 28, the main direction of extension of which runs parallel to the axis A.
Figure 3 shows a moulding jaw attachment 14' of a second embodiment of a moulding jaw unit according to the invention.
Like the moulding jaw unit 10 of the first embodiment, the features and advantages of which are explicitly referred to with respect to the second embodiment of a moulding jaw unit according to Figure 3, so too does the second embodiment of the moulding jaw attachment 14' include the four shaping surfaces 18a through 18d. Each of the shaping surfaces 18a through 18d is arranged on a separate surface 30'a through 30'd. According to the number of shaping surfaces 18a through 18d, four separate surfaces 30'a through 30'd are provided here in such a way that the moulding jaw attachment 14' has a substantially square cross section.
Date Recue/Date Received 2021-03-24
In the embodiment shown in Figures 1 and 2, all of the shaping surfaces 18a through 18d are arranged on a common flat surface 28, the main direction of extension of which runs parallel to the axis A.
Figure 3 shows a moulding jaw attachment 14' of a second embodiment of a moulding jaw unit according to the invention.
Like the moulding jaw unit 10 of the first embodiment, the features and advantages of which are explicitly referred to with respect to the second embodiment of a moulding jaw unit according to Figure 3, so too does the second embodiment of the moulding jaw attachment 14' include the four shaping surfaces 18a through 18d. Each of the shaping surfaces 18a through 18d is arranged on a separate surface 30'a through 30'd. According to the number of shaping surfaces 18a through 18d, four separate surfaces 30'a through 30'd are provided here in such a way that the moulding jaw attachment 14' has a substantially square cross section.
Date Recue/Date Received 2021-03-24
- 16 -The moulding jaw attachment 14' is connected to a moulding jaw base element (not shown) in such a way that the moulding jaw attachment 14' is rotatable about an axis of rotation B relative to the moulding jaw base element. Accordingly, a respective shaping surface 18a through 18d may point away from the moulding jaw base element and may interact with a complementary shaping surface 18a through 18d of an opposing moulding jaw attachment 14' in order to form a mould for a corrugated pipe to be manufactured.
Figure 4 shows a top view of a corrugator according to the invention, which is generally designated by the reference symbol numeral 100. The corrugator 100 here comprises a plurality of moulding jaw units 10 according to the invention, each of which includes a moulding jaw base element 12 and a moulding jaw attachment 14, as was described above with reference to Figures 1 and 2.
The moulding jaw base elements 12 are connected to a moulding jaw carrier 102, which drives the moulding jaw units 10 at the two longitudinal ends of the corrugator 100 shown on the left and right in Figure 4, for example via a gear, along the direction of rotation shown by the arrows C, in such a way that the moulding jaw units 10 located on the longitudinal sides of the corrugator 100, which may be located here in a guide rail of the moulding jaw carrier 102, are pushed forward by the moulding jaw units 10 driven by the moulding jaw carrier 102.
That which is described for the upper part 100a of the corrugator 100 shown in Figure 4 naturally applies in an analogous manner to the lower part 100b of the corrugator 100 shown in Figure 4.
As is apparent in the centre of Figure 4, moulding jaw units 10 of the upper part 100a of the corrugator 100 and moulding jaw units 10 of the lower part Date Recue/Date Received 2021-03-24
Figure 4 shows a top view of a corrugator according to the invention, which is generally designated by the reference symbol numeral 100. The corrugator 100 here comprises a plurality of moulding jaw units 10 according to the invention, each of which includes a moulding jaw base element 12 and a moulding jaw attachment 14, as was described above with reference to Figures 1 and 2.
The moulding jaw base elements 12 are connected to a moulding jaw carrier 102, which drives the moulding jaw units 10 at the two longitudinal ends of the corrugator 100 shown on the left and right in Figure 4, for example via a gear, along the direction of rotation shown by the arrows C, in such a way that the moulding jaw units 10 located on the longitudinal sides of the corrugator 100, which may be located here in a guide rail of the moulding jaw carrier 102, are pushed forward by the moulding jaw units 10 driven by the moulding jaw carrier 102.
That which is described for the upper part 100a of the corrugator 100 shown in Figure 4 naturally applies in an analogous manner to the lower part 100b of the corrugator 100 shown in Figure 4.
As is apparent in the centre of Figure 4, moulding jaw units 10 of the upper part 100a of the corrugator 100 and moulding jaw units 10 of the lower part Date Recue/Date Received 2021-03-24
- 17 -100b of the corrugator 100 converge on a side shown on the left in Figure 4 until their surfaces 28 abut one another. Shaping surfaces 18a through 18d complementary to one another form a mould at this point, which defines a portion of a corrugated pipe 104 to be manufactured. A plastics material, for example, is now introduced into this mould which, by applying a vacuum to channels (not shown) running through the shaping surfaces 18a through 18d, is made to adapt to the contour of the shaping surfaces 18a through 18d.
According to the choice of interacting shaping surfaces 18a through 18d, a profile of the corrugated pipe 104 is defined accordingly.
The arrow R in Figure 4 indicates the direction in which the corrugated pipe 104 produced leaves the corrugator 100 (also called the "production direction"). The corrugated pipe 104 in this case includes portions 106 having a first diameter D1, portions 108 having a diameter increasing from a first diameter D1 to a second diameter D2, which is larger than the first diameter D1, portions 110 having a constant diameter D2 and portions 112 having a diameter decreasing from diameter D2 to diameter Dl. As previously stated above, the portion 106 of the corrugated pipe 104 is formed by two mutually abutting shaping surfaces 18d, the portion 108 of the corrugated pipe 104 by two mutually abutting shaping surfaces 18b, the portion 110 of the corrugated pipe 104 by two mutually abutting shaping surfaces 18c and the portion 112 of the corrugated pipe 104 is formed by two mutually abutting shaping surfaces 18a, into which appropriate plastics material is introduced.
In each of the parts 100a and 100b of the corrugator 100, an adjustment device 114 is shown, which is formed here from four adjustment units 116.
Each of the four adjustment units 116 is adapted to engage with a moulding jaw unit 10 or with a moulding jaw attachment 14 of a moulding jaw unit 10 in order to displace the moulding jaw attachment 14 relative to a respective moulding jaw base element 12 attached to the moulding jaw carrier 102. In the exemplary embodiment shown in Figure 4, the moulding jaw attachments 14 are displaced relative to the moulding jaw base elements 12 along an axis Date Recue/Date Received 2021-03-24
According to the choice of interacting shaping surfaces 18a through 18d, a profile of the corrugated pipe 104 is defined accordingly.
The arrow R in Figure 4 indicates the direction in which the corrugated pipe 104 produced leaves the corrugator 100 (also called the "production direction"). The corrugated pipe 104 in this case includes portions 106 having a first diameter D1, portions 108 having a diameter increasing from a first diameter D1 to a second diameter D2, which is larger than the first diameter D1, portions 110 having a constant diameter D2 and portions 112 having a diameter decreasing from diameter D2 to diameter Dl. As previously stated above, the portion 106 of the corrugated pipe 104 is formed by two mutually abutting shaping surfaces 18d, the portion 108 of the corrugated pipe 104 by two mutually abutting shaping surfaces 18b, the portion 110 of the corrugated pipe 104 by two mutually abutting shaping surfaces 18c and the portion 112 of the corrugated pipe 104 is formed by two mutually abutting shaping surfaces 18a, into which appropriate plastics material is introduced.
In each of the parts 100a and 100b of the corrugator 100, an adjustment device 114 is shown, which is formed here from four adjustment units 116.
Each of the four adjustment units 116 is adapted to engage with a moulding jaw unit 10 or with a moulding jaw attachment 14 of a moulding jaw unit 10 in order to displace the moulding jaw attachment 14 relative to a respective moulding jaw base element 12 attached to the moulding jaw carrier 102. In the exemplary embodiment shown in Figure 4, the moulding jaw attachments 14 are displaced relative to the moulding jaw base elements 12 along an axis Date Recue/Date Received 2021-03-24
- 18 -A vertical to the plane of the sheet (see in this regard also Figure 1 or Figure 5).
The adjustment device 114 is also adapted to be displaced together with the moulding jaw units 10 over a distance S in order to be able to carry out a corresponding adjustment of the moulding jaw attachments 14 relative to the moulding jaw base elements 12 during the transport of the moulding jaw units by the moulding jaw carrier 102, without influencing the transport movement of the moulding jaw units 10 in the process. The moulding jaw 10 units 10, with which the adjustment device 114 is just engageable, may be regarded as a first set 118 of moulding jaw units 10, whereas moulding jaw units 10, which are engageable with the adjustment device 114 after the first set 118 of moulding jaw units 10, may be regarded as a second set 120 of moulding jaw units 10. Once a corresponding adjustment of the moulding jaw attachments 14 has been carried out, the adjustment device 114 may be moved back into the initial position shown in Figure 4.
The line V-V in Figure 4 indicates a section line, a corresponding sectional view being shown in Figure 5, which will be described in greater detail below.
Two mutually abutting moulding jaw attachments 14 are shown in the centre of Figure 5, which together form a mould 122, by means of which a portion of the corrugated pipe 104 to be manufactured may be formed. Paths 124, which are shown as a dot-dash line, via which a negative pressure may be applied to the mould 122, extend to the sides of the mould 122 shown on the left and right in Figure 5.
The moulding jaw attachments 14 of the moulding jaw units 10 shown in the centre in Figure 5 are displaced maximally downwards relative to their respective moulding jaw base elements 12. The moulding jaw base elements 12 of the moulding jaw units 10 are slidably mounted in respective moulding jaw carriers 102 of the corrugator 100, as indicated by way of example by the Date Recue/Date Received 2021-03-24
The adjustment device 114 is also adapted to be displaced together with the moulding jaw units 10 over a distance S in order to be able to carry out a corresponding adjustment of the moulding jaw attachments 14 relative to the moulding jaw base elements 12 during the transport of the moulding jaw units by the moulding jaw carrier 102, without influencing the transport movement of the moulding jaw units 10 in the process. The moulding jaw 10 units 10, with which the adjustment device 114 is just engageable, may be regarded as a first set 118 of moulding jaw units 10, whereas moulding jaw units 10, which are engageable with the adjustment device 114 after the first set 118 of moulding jaw units 10, may be regarded as a second set 120 of moulding jaw units 10. Once a corresponding adjustment of the moulding jaw attachments 14 has been carried out, the adjustment device 114 may be moved back into the initial position shown in Figure 4.
The line V-V in Figure 4 indicates a section line, a corresponding sectional view being shown in Figure 5, which will be described in greater detail below.
Two mutually abutting moulding jaw attachments 14 are shown in the centre of Figure 5, which together form a mould 122, by means of which a portion of the corrugated pipe 104 to be manufactured may be formed. Paths 124, which are shown as a dot-dash line, via which a negative pressure may be applied to the mould 122, extend to the sides of the mould 122 shown on the left and right in Figure 5.
The moulding jaw attachments 14 of the moulding jaw units 10 shown in the centre in Figure 5 are displaced maximally downwards relative to their respective moulding jaw base elements 12. The moulding jaw base elements 12 of the moulding jaw units 10 are slidably mounted in respective moulding jaw carriers 102 of the corrugator 100, as indicated by way of example by the Date Recue/Date Received 2021-03-24
- 19 -reference numeral 126.
On the left and right outer sides of the corrugator 100 shown in Figure 5, one moulding jaw unit 10 is shown in each case, of which the moulding jaw attachments 14 are situated in different positions relative to their respective moulding jaw base elements 12. The moulding jaw attachment 14 of the moulding jaw unit 10 shown on the left in Figure 5 is in a position that is substantially identical to the two moulding jaw attachments 14 of the moulding jaw units 10 shown in the centre of Figure 5, whereas the moulding jaw attachment 14 of the moulding jaw unit 10 shown on the right in Figure 5 is shifted maximally upwards along the axis A.
The adjustment devices 114 or the adjustment units 116 shown on the left and right in Figure 5 are described by way of example below using the adjustment unit 116 shown on the right in Figure 5.
The adjustment unit 116 includes an engagement device 128, which is adapted to engage with a respective corresponding engagement portion 130 of a moulding jaw attachment 14 so as to allow a joint displacement of a slide 132 of the adjustment unit 116 on which the engagement device 128 is attached, together with a respective moulding jaw attachment 14 along the axis A. The slide 132 is driven here via a drive unit 134 of the adjustment unit 116, the drive unit 134 driving a gear 136 here, which in turn engages with a toothing 138 of the slide 132 in such a way that a rotation of the gear 136 causes a displacement of the slide 132 along the axis A.
The adjustment unit 116 is also adapted to interact with a latching device 22 of the moulding jaw unit 10, thus allowing a relative displacement of a moulding jaw attachment 14 relative to the associated moulding jaw base element 12.
All the drive units 134 of the adjustment devices 114 are connected to a Date Recue/Date Received 2021-03-24
On the left and right outer sides of the corrugator 100 shown in Figure 5, one moulding jaw unit 10 is shown in each case, of which the moulding jaw attachments 14 are situated in different positions relative to their respective moulding jaw base elements 12. The moulding jaw attachment 14 of the moulding jaw unit 10 shown on the left in Figure 5 is in a position that is substantially identical to the two moulding jaw attachments 14 of the moulding jaw units 10 shown in the centre of Figure 5, whereas the moulding jaw attachment 14 of the moulding jaw unit 10 shown on the right in Figure 5 is shifted maximally upwards along the axis A.
The adjustment devices 114 or the adjustment units 116 shown on the left and right in Figure 5 are described by way of example below using the adjustment unit 116 shown on the right in Figure 5.
The adjustment unit 116 includes an engagement device 128, which is adapted to engage with a respective corresponding engagement portion 130 of a moulding jaw attachment 14 so as to allow a joint displacement of a slide 132 of the adjustment unit 116 on which the engagement device 128 is attached, together with a respective moulding jaw attachment 14 along the axis A. The slide 132 is driven here via a drive unit 134 of the adjustment unit 116, the drive unit 134 driving a gear 136 here, which in turn engages with a toothing 138 of the slide 132 in such a way that a rotation of the gear 136 causes a displacement of the slide 132 along the axis A.
The adjustment unit 116 is also adapted to interact with a latching device 22 of the moulding jaw unit 10, thus allowing a relative displacement of a moulding jaw attachment 14 relative to the associated moulding jaw base element 12.
All the drive units 134 of the adjustment devices 114 are connected to a Date Recue/Date Received 2021-03-24
- 20 -control unit (not shown) which is adapted to send corresponding control commands to the drive units 134 in order to drive respective slides 132 by a desired distance.
If the moulding jaw unit 10 shown on the left in Figure 5 were also shifted into the position of the moulding jaw unit shown on the right in Figure 5, the two moulding jaw attachments 14 would converge in such a way that their respective shaping surfaces 18d would become part of the production chain of the corrugated pipe 104, i.e. a portion 106 of the corrugated pipe 104 would thus be formed.
In Figures 6a through 6d, four stages of an adjustment process according to the invention are now shown, the view of Figures 6a through 6d corresponding to a viewing direction according to an arrow D shown in Figures 4 and 5.
A plurality of moulding jaw attachments 14 may be seen in Figures 6a through 6d, only three of which are provided with the reference numeral 14 by way of example in each of Figures 6a through 6d. Furthermore, a dot-dash line K is shown, which indicates the above-mentioned "chain" or "production chain", along which respective shaping surfaces of the moulding jaw attachments interact in order to produce a corrugated pipe 104.
In order to be able to better explain the progression of Figures 6a through 6d, the four moulding jaw attachments with which the adjustment units 116 are engaged are referred to (from left to right) as the first moulding jaw attachment 14a, second moulding jaw attachment 14b, third moulding jaw attachment 14c and fourth moulding jaw attachment 14d. The moulding jaw attachments 14a through 14d, which may also be referred to as a first set 118 of moulding jaw attachments 14, have just been engaged by respective adjustment units 116 in Figure 6a. As indicated by the arrow T, all of the moulding jaw attachments 14 are displaced further in the direction of the Date Recue/Date Received 2021-03-24
If the moulding jaw unit 10 shown on the left in Figure 5 were also shifted into the position of the moulding jaw unit shown on the right in Figure 5, the two moulding jaw attachments 14 would converge in such a way that their respective shaping surfaces 18d would become part of the production chain of the corrugated pipe 104, i.e. a portion 106 of the corrugated pipe 104 would thus be formed.
In Figures 6a through 6d, four stages of an adjustment process according to the invention are now shown, the view of Figures 6a through 6d corresponding to a viewing direction according to an arrow D shown in Figures 4 and 5.
A plurality of moulding jaw attachments 14 may be seen in Figures 6a through 6d, only three of which are provided with the reference numeral 14 by way of example in each of Figures 6a through 6d. Furthermore, a dot-dash line K is shown, which indicates the above-mentioned "chain" or "production chain", along which respective shaping surfaces of the moulding jaw attachments interact in order to produce a corrugated pipe 104.
In order to be able to better explain the progression of Figures 6a through 6d, the four moulding jaw attachments with which the adjustment units 116 are engaged are referred to (from left to right) as the first moulding jaw attachment 14a, second moulding jaw attachment 14b, third moulding jaw attachment 14c and fourth moulding jaw attachment 14d. The moulding jaw attachments 14a through 14d, which may also be referred to as a first set 118 of moulding jaw attachments 14, have just been engaged by respective adjustment units 116 in Figure 6a. As indicated by the arrow T, all of the moulding jaw attachments 14 are displaced further in the direction of the Date Recue/Date Received 2021-03-24
- 21 -arrow T.
In Figure 6b, the first set 118 has been displaced further in the direction of the arrow T (here by the width of two moulding jaw attachments 14).
Accordingly, the adjustment device 114 has also been displaced by this distance along the travel path S of the adjustment device 114 on the corrugator 100 together with the moulding jaw attachments 14a through 14d.
Furthermore, the first moulding jaw attachment 14a has been displaced by one step, upwards in the drawing in Figure 6b. The second moulding jaw attachment 14b has been displaced upwards by two steps by the corresponding adjustment unit 116. The third moulding jaw attachment 14c has been displaced downwards by one step. The fourth moulding jaw attachment 14d has been displaced upwards by one step. According to the arrangement of the shaping surfaces 18a through 18d on the respective moulding jaw attachments 14a through 14d, the shaping surfaces of the first through fourth moulding jaw attachments 14a through 14d that are displaced into the production chain K form (in this order) portions 110, 110, 112 and 106 of a corrugated pipe 104.
In Figure 6c, the first set 118 of moulding jaw attachments 14a through 14d has been displaced further in the direction of arrow T by the width of a moulding jaw attachment 14. The adjustment units 116 of the adjustment device 114 have disengaged from the moulding jaw attachments 14a through 14d and the slides 132 of the adjustment units 116 are displaced into a fully retracted initial position.
An initial position of the adjustment device 114 is now shown in Figure 6d, the adjustment device 114 or the adjustment units 116 thereof being adapted to engage with a second set 120 of fifth to eighth moulding jaw attachments 14e through 14h. The subsequent method steps are repeated in a manner analogous to the first set 118 of moulding jaw attachments 14, corresponding to a desired shaping of the corrugated pipe 104 by the respective shaping Date Recue/Date Received 2021-03-24
In Figure 6b, the first set 118 has been displaced further in the direction of the arrow T (here by the width of two moulding jaw attachments 14).
Accordingly, the adjustment device 114 has also been displaced by this distance along the travel path S of the adjustment device 114 on the corrugator 100 together with the moulding jaw attachments 14a through 14d.
Furthermore, the first moulding jaw attachment 14a has been displaced by one step, upwards in the drawing in Figure 6b. The second moulding jaw attachment 14b has been displaced upwards by two steps by the corresponding adjustment unit 116. The third moulding jaw attachment 14c has been displaced downwards by one step. The fourth moulding jaw attachment 14d has been displaced upwards by one step. According to the arrangement of the shaping surfaces 18a through 18d on the respective moulding jaw attachments 14a through 14d, the shaping surfaces of the first through fourth moulding jaw attachments 14a through 14d that are displaced into the production chain K form (in this order) portions 110, 110, 112 and 106 of a corrugated pipe 104.
In Figure 6c, the first set 118 of moulding jaw attachments 14a through 14d has been displaced further in the direction of arrow T by the width of a moulding jaw attachment 14. The adjustment units 116 of the adjustment device 114 have disengaged from the moulding jaw attachments 14a through 14d and the slides 132 of the adjustment units 116 are displaced into a fully retracted initial position.
An initial position of the adjustment device 114 is now shown in Figure 6d, the adjustment device 114 or the adjustment units 116 thereof being adapted to engage with a second set 120 of fifth to eighth moulding jaw attachments 14e through 14h. The subsequent method steps are repeated in a manner analogous to the first set 118 of moulding jaw attachments 14, corresponding to a desired shaping of the corrugated pipe 104 by the respective shaping Date Recue/Date Received 2021-03-24
- 22 -surfaces 18a through 18d of the respective moulding jaw attachments 14e through 14h.
Date Recue/Date Received 2021-03-24
Date Recue/Date Received 2021-03-24
Claims (15)
1. Moulding jaw unit (10) for a corrugator (100), comprising a moulding jaw attachment (14; 14a-14h), which has a plurality of mutually different shaping surfaces (18a-18d), wherein the shaping surfaces (18a-18d) are suitable for imparting a predetermined shape to a material to be moulded, and a moulding jaw base element (12) on which the moulding jaw attachment (14; 14a-14h) is arranged, wherein the moulding jaw attachment (14; 14a-14h) is mounted on the moulding jaw base element (12) so as to be displaceable relative thereto.
2. Moulding jaw unit (10) according to claim 1, characterised in that the moulding jaw attachment (14; 14a-14h) may be displaced translationally relative to the moulding jaw base element (12) along precisely one axis (A) or rotationally about precisely one axis (B).
3. Moulding jaw unit (10) according to either claim 1 or claim 2, characterised in that the plurality of shaping surfaces (18a-18d) on the moulding jaw attachment (14; 14a-14h) are arranged on the same surface (28).
4. Moulding jaw unit (10) according to claim 3, characterised in that the surface (28) extends substantially parallel to the direction of displacement (A) of the moulding jaw attachment (14;
14a-14h) relative to the moulding jaw base element (12).
14a-14h) relative to the moulding jaw base element (12).
5. Moulding jaw unit (10) according to either claim 1 or claim 2, characterised in that the moulding jaw attachment (14; 14a-14h) has a polygonal cross section and that each of the plurality of shaping surfaces (18a-18d) is arranged on a different surface (30'a-30'd) of the polygonal moulding jaw attachment (14; 14a- 14h).
6. Corrugator (100) comprising a plurality of moulding jaws, which comprises at least a plurality of moulding jaw units (10), in particular moulding jaw units (10) according to any of claims 1 through 5, wherein each moulding jaw unit (10) comprises a moulding jaw attachment (14; 14a-14h), which includes a plurality of mutually different shaping surfaces (18a-18d), wherein the shaping surfaces (18a-18d) are suitable for imparting a predetermined shape to a material to be moulded, and a moulding jaw base element (12) on which the moulding jaw attachment (14; 14a-14h) is arranged, wherein the moulding jaw attachment (14; 14a-14h) is mounted on the moulding jaw base element (12) so as to be displaceable relative thereto, and a moulding jaw carrier (102) on which the moulding jaw base elements (12) are held.
7. Corrugator (100) according to claim 6, characterised in that the moulding jaw carrier (102) is designed as a chain or as a guide device.
8. Corrugator (100) according to any of claims 6 or 7, characterised in that the moulding jaw attachment (14; 14a-14h) is displaceable relative to the moulding jaw base element (12) in the operating state of the moulding jaw unit (10) along a direction (A) substantially orthogonal to a production direction (R) of the corrugator (100) or is rotatable about an axis (B), which is substantially parallel to the production direction (R) of the corrugator (100).
9. Corrugator (100) according to any of claims 6 to 8, characterised in that the corrugator (100) comprises an adjustment device (114), which is adapted to displace the moulding jaw attachment (14; 14a-14h) relative to the moulding jaw base element (12) by a predetermined amount.
10. Corrugator (100) according to claim 9, characterised in that the adjustment device (114) is designed as at least one displaceable stop with which a portion of the moulding jaw attachment (14; 14a-14h) comes into contact, so that the moulding jaw attachment (14; 14a-14h) is displaced relative to the moulding jaw base element corresponding to the preset position of the stop.
11. Corrugator according to either claim 9 or claim 10, characterised in that the adjustment device (114) is adapted to be displaced over a predefined distance (S) together with at least one moulding jaw unit (10) to be adjusted.
12. Corrugator according to claims 9 through 11, characterised in that the adjustment device (114) is designed as a plurality of adjustment units (116), each adjustment unit (116) being assigned to a moulding jaw attachment (14; 14a-14h), and each adjustment unit (116) being adapted to displace the moulding jaw attachment (14; 14a-14h) relative to the moulding jaw base element (12).
13. Corrugator (100) according to any of claims 6 through 12, characterised in that two moulding jaw attachments (14; 14a-14h) which form a mould are provided with projections and recesses, which are adapted to engage with one another when the moulding jaw attachments (14; 14a-14h) operatively abut one another.
14. Corrugator (100) according to any of claims 6 through 13, characterised in that at least two moulding jaw attachments (14; 14a-14h), arranged one after the other, in particular on the same moulding jaw carrier (102), as viewed in a production direction (R) of the corrugator (100), are provided with projections and recesses which are adapted to engage with one another when the moulding jaw attachments (14; 14a-14h) operatively abut one another.
15. Method for changing a shape of a corrugator (100) defined by shaping surfaces (18a-18d), wherein the method comprises the steps of:
- providing a corrugator (100) comprising a plurality of moulding jaws, which comprises at least a plurality of moulding jaw units (10), in particular moulding jaw units (10) according to any of claims 1 through 5, wherein each moulding jaw unit (10) comprises a moulding jaw attachment (14; 14a-14h), which includes a plurality of mutually different shaping surfaces (18a-18d), wherein the shaping surfaces (18a-18d) are suitable for imparting a predetermined shape to a material to be moulded, and a moulding jaw base element (12) on which the moulding jaw attachment (14; 14a-14h) is arranged, wherein the moulding jaw attachment (14; 14a-14h) is mounted on the moulding jaw base element (12) so as to be displaceable relative thereto, and a moulding jaw carrier (102) on which the moulding jaw base elements (12) are held;
- driving the moulding jaw base elements (12) such that they move along a conveying direction (C), - driving at least one moulding jaw attachment (14; 14a-14h) during the movement thereof in the conveying direction (C), so that the moulding jaw attachment (14; 14a-14h) is displaced from a first position, which is assigned to a first shaping surface (18a-18d), into a second position, which is assigned to a second shaping surface (18a-18d).
- providing a corrugator (100) comprising a plurality of moulding jaws, which comprises at least a plurality of moulding jaw units (10), in particular moulding jaw units (10) according to any of claims 1 through 5, wherein each moulding jaw unit (10) comprises a moulding jaw attachment (14; 14a-14h), which includes a plurality of mutually different shaping surfaces (18a-18d), wherein the shaping surfaces (18a-18d) are suitable for imparting a predetermined shape to a material to be moulded, and a moulding jaw base element (12) on which the moulding jaw attachment (14; 14a-14h) is arranged, wherein the moulding jaw attachment (14; 14a-14h) is mounted on the moulding jaw base element (12) so as to be displaceable relative thereto, and a moulding jaw carrier (102) on which the moulding jaw base elements (12) are held;
- driving the moulding jaw base elements (12) such that they move along a conveying direction (C), - driving at least one moulding jaw attachment (14; 14a-14h) during the movement thereof in the conveying direction (C), so that the moulding jaw attachment (14; 14a-14h) is displaced from a first position, which is assigned to a first shaping surface (18a-18d), into a second position, which is assigned to a second shaping surface (18a-18d).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018217798.8 | 2018-10-17 | ||
| DE102018217798.8A DE102018217798A1 (en) | 2018-10-17 | 2018-10-17 | Variable mold jaw |
| PCT/EP2019/078039 WO2020079046A1 (en) | 2018-10-17 | 2019-10-16 | Variable shaping jaw for a corrugator and method for varying a corrugator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3114037A1 true CA3114037A1 (en) | 2020-04-23 |
Family
ID=68289979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3114037A Pending CA3114037A1 (en) | 2018-10-17 | 2019-10-16 | Variable moulding jaw |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3867038B1 (en) |
| CN (1) | CN112888545A (en) |
| CA (1) | CA3114037A1 (en) |
| DE (1) | DE102018217798A1 (en) |
| WO (1) | WO2020079046A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325685A (en) * | 1980-09-12 | 1982-04-20 | Lupke Manfred Arno Alfred | Apparatus for producing thermoplastic tubing having interchangeable mold blocks |
| ATE58671T1 (en) * | 1986-11-13 | 1990-12-15 | Unicor Rohrsysteme Gmbh | DEVICE FOR CONTINUOUS PRODUCTION OF PIPES WITH CROSS-PROFILED WALLS. |
| CA2271395C (en) * | 1999-05-07 | 2006-07-11 | Manfred A. A. Lupke | Molding apparatus with mold block replacement system |
| DE10148294C1 (en) * | 2001-09-29 | 2003-01-16 | Unicor Rohrsysteme Gmbh | Mold half for corrugator, for producing ribbed conduits, has semi-cylindrical inner surface, fittings with concave inner surface alternating with fittings with convex inner surface being fitted on it |
| CA2411881C (en) * | 2002-11-15 | 2009-09-15 | Manfred A. A. Lupke | Molding apparatus with mold blocks having face adjustment |
| CN103057086A (en) * | 2012-12-14 | 2013-04-24 | 大连三垒机器股份有限公司 | Forming mold of square single-wall corrugated pipe |
| DE102013013797A1 (en) * | 2013-08-17 | 2015-02-19 | G & S Plast GmbH & Co. KG | Shaping quick-change system for corrugators For shortening corrugator downtimes during the changeover phases to other pipe sizes or dimensions, with attached additional guide channels that can be rotated or pushed into the desired production position by manual or energetic auxiliary drives. |
| DE102014226335A1 (en) * | 2014-12-17 | 2016-06-23 | Leoni Kabel Holding Gmbh | Method for producing an electrical line, tool mold for such a method and line |
-
2018
- 2018-10-17 DE DE102018217798.8A patent/DE102018217798A1/en active Pending
-
2019
- 2019-10-16 CA CA3114037A patent/CA3114037A1/en active Pending
- 2019-10-16 CN CN201980067065.9A patent/CN112888545A/en active Pending
- 2019-10-16 WO PCT/EP2019/078039 patent/WO2020079046A1/en unknown
- 2019-10-16 EP EP19789951.1A patent/EP3867038B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3867038C0 (en) | 2024-01-10 |
| EP3867038B1 (en) | 2024-01-10 |
| WO2020079046A1 (en) | 2020-04-23 |
| EP3867038A1 (en) | 2021-08-25 |
| DE102018217798A1 (en) | 2020-04-23 |
| CN112888545A (en) | 2021-06-01 |
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