DE102008023178B4 - Shaping device, in particular corrugator, for producing profiled plastic pipes - Google Patents

Abstract

Shaping device, in particular corrugator, for producing profiled plastic pipes,
in which a plurality of contiguous modules (9, 10, 11) are supported in succession on a frame (6), each of the modules (9, 10, 11) comprising at least one leader guide section (17) and a return guide section (18) for slidably guiding Having mold baking,
the mold jaws being guided in the modules (9, 10, 11) so as to form two circumferential mold jaw sequences, between which in a stack formed by adjacent modules (9, 10, 11) is a mold cavity for molding a profile in one therein taken plastic tube is formed,
the modules (9, 10, 11) comprising an inlet module (9) in which the return guide section (18) is connected to the feed guide section (17) via a guide section bent by approximately 180 °,
wherein the modules (9, 10, 11) comprise a discharge module (11), in which the supply guide section (17) is connected to the return flow guide section (18) by means of a bent guide section (34) which is approximately 180 [deg.] ...

Description

The The invention relates to a molding apparatus, in particular a corrugator, for the production of profiled plastic pipes according to the preamble of Claim 1. It further relates to an apparatus and a method for producing a profiled plastic pipe.

From the DE 1 303 583 A a corrugator is known. The mold jaw halves are here each provided with guide slopes. The guide slopes cooperate with guide wedges arranged in the starting area and in the end area of a lead-in guide section.

The US 3,776,679 A relates to a corrugator for producing plastic pipes. In this case, the shaping jaws are guided in a curved guide section to the forward guide section such that the outer edge of the front end passes through a smaller radius of curvature than the outer edge of the rear end.

The DE 102 57 364 B3 relates to a device for the production of transverse ribbed tubes. The device has mold jaw halves which are guided along two endless guideways. The guideways each have feed guide sections, return guide sections and two curved guide sections. At the bent guide portions, a deflecting member is formed in each case with a special guide edge. Thereby jumping of the mold jaw halves between the guide portions can be prevented and the feed speed of the mold jaw halves can be increased.

From the EP 1 897 671 A1 a device for the production of plastic pipes is known. The device has a control block with integrated cooling. In this case, a channel for circulating a cooling liquid is formed on the inner wall of the control block.

A generic corrugator in modular design is from the WO 91 03 366 A1 known. In the known corrugator differently configured modules for producing the respective desired shape z. B. a corrugated pipe are combined. The demands on the accuracy in the production of profiled plastic pipes, such as corrugated pipes, as well as the complexity in the geometry, especially of fittings and the like, are constantly increasing. At the same time, smaller batch sizes are required by the customers. This requires a frequent and extremely time-consuming retooling of the modules of the corrugator. To remove a module, it is necessary, for example, to dismantle the vacuum and cooling lines and the adjacent modules. For this usually all modules must be dismantled from a base plate receiving them. A comparable effort is associated with the new installation.

in the End area of the outlet module are the mold jaws guided in the flow channel separated and over subsequent curved guide sections each a return channel fed. To separate the mold jaws is a in the manufacturing direction itself widening wedge provided in the end portion of the flow channel. As soon as the mold jaws start against the wedge, they leave you previous linear motion path. You will be accompanied by the The molded jaws previously profiled profiled plastic tube withdrawn. At the Starting against the wedge, it sometimes happens that the mold jaws rotate and consequently briefly profiled with the Tighten plastic pipe. In the further course of the movement, the Although molded jaws separated from the profiled plastic pipe. By However, the forces resulting from the tension, it can be a undesirable damage or deformation of the profiled plastic pipes come.

task The invention is to the disadvantages of the prior art remove. It is a forming device, in particular a corrugator, for Specified profiled plastic pipes of improved quality become. According to a further object of the invention, the molding apparatus should be fast and simply in view of a new geometry requirement of a can be adapted to be produced component.

These The object is solved by the features of claims 1, 34 and 35. Advantageous embodiments The invention will become apparent from the features of claims 2 to 33rd

To proviso The invention provides that at the outlet module in an end region of the lead-leading section two gears for engagement in each one provided on the upper side of the mold jaws Rack are mounted, each gear so aligned is that the mold jaws when leaving one through the upstream guide sections predetermined linear movement path substantially perpendicular to Direction of the linear path of movement withdrawn and thus from each other be separated. This will be a complication-free withdrawal the molded jaws of the profiled plastic tube and thus a problem-free Removal ensured. Deformations or damage At the profiled plastic pipe are avoided. The quality of the produced Plastic pipes is improved.

For the purposes of the present invention, "shaping jaws" are understood to be conventional shaping jaws, as used, for example, for producing profiled plastic pipes in corrugators. By way of example, this is based on the content of DE 197 00 028 C2 referenced, which discloses exemplary mold jaws. Such mold jaws may be provided on their wall with vacuum openings for sucking the material to be molded.

To further requirement The invention is in the end region of the flow guide section in a manufacturing direction widening wedge provided. By the action of the wedge be the first guided together Molded jaws separated at an acute angle and subsequently on the curved guide section of the Exit module for returning to Infeed module forced.

The gears are expediently attached on either side of the wedge in an opposing arrangement. The gears are freely rotatable. Their tooth flanks can be substantially perpendicular be aligned to the linear path of movement. When engaging in the To the mold jaws provided racks will be an undesirable Rotate the mold jaws when starting against the wedge safely and reliable avoided. It has been found that the inventive provision a separate non-driven gear for each of the form-back chains leads to significantly better results than for example the Using a single gear, which at the same time in the engages left and in the right mold jaw sequence.

To In a further embodiment, the outlet module has two mutually opposite arranged, the respective guide sections comprehensive assemblies, which relative to a Auslaufmodul- base plate and adjustable substantially parallel to the direction of manufacture are. The proposed separate adjustability of the units with respect to Outlet module base plate allows, for example a separate setting of a game between the jaws of each the mold jaw sequences circulating in the modules.

To the Adjusting each of the assemblies may provide an actuator be. The actuator advantageously has an upstream of the Units mounted on the outlet module base plate further Assembly engaging spindle on. The on the outlet module base plate attached further assembly may be formed similarly, as a structural unit of an intermediate module. With the actuator can So a distance of the movable units relative to the other Unit can be adjusted. To move the other spindle can a spindle motor may be provided. As a particularly advantageous it turned out, the movements of the spindle motor in dependence a measured temperature of the mold jaws to regulate such that between the sequence of successive mold jaws a predetermined Game is set.

To In a further embodiment, each module is provided thereover separate base plate supported on the frame. Furthermore, a clamping device be provided for clamping the adjacent modules. By having each module with a separate base plate provided thereon supported on the frame It can quickly and easily with its base plate from the frame lifted or re of the frame. It is no longer necessary, every module from one all Modules receiving common men base plate to dismantle or below to assemble again. With the clamping device it is possible to adjacent modules, for example, in a horizontal Direction to tense a solid block, then total supported on the frame. In this case, the clamping device can be configured particularly simple, so that a bracing of the modules is quick and easy to carry out. It is omitted so that the state of the art considerable effort of the screw the adjacent modules together, as well as the screw connection the modules opposite the common base plate receiving it. This can changeover times be significantly reduced in corrugators.

To an advantageous embodiment of the invention is the inlet module firmly connected to the frame and by means of the clamping device the at least one downstream in a manufacturing direction following module with the Inlet module can be braced. By fixing the inlet module firmly to the frame is connected, the entire module assembly is relative from the outset always arranged in a fixed position to the frame. That saves Adjustments. Furthermore let yourself so that the bracing of the modules and the design of the clamping device make it easier.

In a simple embodiment, the corrugator has only one inlet and one outlet module clamped therewith. According to a more complex embodiment, the modules also include intermediate modules, which can be selectively switched between the inlet and outlet module and clamped with the clamping device between the inlet and the outlet module. The proposed molding apparatus can thus be adapted universally by the optional interposition of intermediate modules to a wide variety of predetermined designs. This leaves the assembly and the tension of the modules nevertheless simple and easy to carry out.

To a particularly advantageous embodiment, the clamping device at least one more spindle. Here is the other spindle designed so that between the inlet and the outlet module a tensile stress can be produced. Maybe between that Infeed and outfeed module intermediary intermediate modules can thus fast and easy with the inlet and outlet module to a module block be tense.

The Clamping device can advantageously in a surrounded by the frame Space be provided below the modules. In this case, the at least one spindle with the base plates of the inlet and outlet modules be connected. Can do this be provided on the base plates mounting blocks in which the spindle is both rotatable and guided in a thread, so that the input with the outlet module can be clamped. To one especially uniform tension to ensure the modules can longitudinal provided two substantially mutually parallel spindles be.

To a further advantageous embodiment comprises the clamping device at least one tensioning device motor for locking and relaxing the Modules. If the clamping device one or more other spindles Preferably, each of the further spindles is a tensioner motor assigned. By providing the at least one tensioner motor the bracing of the modules can be further facilitated. Especially can thus automatically also a predetermined torque for clamping The modules are applied quickly and easily, ensuring durability the corrugator is improved overall.

To In a further embodiment, the modules are on a shaft bearing supported by the frame. The shaft bearing is expediently two in the longitudinal direction attached to the substantially rectangular frame formed. The Shaft mounting forms a kind of rail guide on which the modules for Installation can be stored displaced. You can follow through Effect of the clamping device on the shaft bearing, for example be moved in the direction of the inlet module for bracing.

Conveniently, are at the in the assembled state adjacent contact surfaces of the modules mutually corresponding centering means for horizontal and vertical centering of the modules provided. It is about around mutually corresponding inclined surfaces, which increases with increasing Clamping of the adjacent modules form-fitting together lay and so an exact alignment of the adjacent modules guarantee. The self-centering design of the modules continues to simplify and speed up the conversion of the molding apparatus at.

To In a further embodiment, the base plates of the modules are in their longitudinal extent in Production direction slightly shorter designed as on the base plates recorded units. Ie. the contact surfaces The units have a slight projection over the base plates on. This ensures when the modules are clamped between the contact surfaces a non-positive Compound forms. The formation of a non-positive connection of By contrast, adjacent base plates of the modules is advantageously avoided.

To Another particularly advantageous embodiment is below providing the modules with a vacuumable sealable cup, which is continuously in the direction of manufacture over a Length of several extending modules extends. The vacuum channel is suitably on a section of the underside of the base plates of the abutting Modules attachable, which one through the flow guide sections the adjacent modules formed feed channel approximately opposite. Conveniently, are in the bottom of the base plates of the adjacent ones Module breakthroughs for producing a vacuum connection with the mold jaws provided suction openings intended. The bottom of each module can through it provided separate base plate may be formed. With the proposed Design deleted in a working with vacuum molding device, the time-consuming disassembly and mounting a plurality of separate vacuum lines to each module. With the vacuum channel can in one operation when retrofitting the Forming device sealing the modules from above to the vacuum channel created and thus quickly and easily a vacuum connection with the modules are manufactured. Intended in the base plates of the modules breakthroughs are configured and arranged so that they are overlapped by the vacuum channel and thereby one up to the suction openings the mold baking reaching vacuum connection quickly and easily can be produced.

The vacuum channel may be subdivided into a plurality of segments by means of partitions running essentially transversely to the direction of production. Each segment is expediently connected to a vacuum source with the interposition of a valve. This makes it possible to adapt the vacuum duct length of the vacuum duct to vary the particular module configuration by selecting a suitable number of vacuum-charged segments. Apart from that, it is also possible to control or regulate each segment separately.

Usually is the vacuum channel in a first position in which he essentially surrounded by the frame and provided with a thereto Sealing device is arranged so that the modules when placing on the shaft bearing with its base plate sealing on the sealing device of Vacuum channels rest. In case of malfunction or when starting up an upstream of the forming device upstream extruding device can It may be necessary for the module block to total fast of a mouthpiece the extruder device must be removed. For this purpose can the vacuum channel advantageously from one of the frame substantially surrounded first position in one of the bottom of the modules spaced second position below the frame are moved. This allows a movement of the module block relative to the frame and away from the mouthpiece of the extruder device.

Of Furthermore, it has proved to be advantageous that a discharge module base plate of the outlet module extending in the direction of manufacture Extension for sealing an excess length of the Has vacuum channel. So it can basically in the molding device a vacuum channel can be used which, for example, via a Substantial part of the frame surrounded by the interior space extends in the longitudinal direction. For certain module combinations, the vacuum channel has an excess length, d. H. it extends beyond the outlet module in the direction of production, whereby the vacuum duct or a segment thereof suck in false air would. A such excess length of Vacuum channel can in some module combinations, for example by the proposed, extending from the outlet module base plate Extension to be sealed vacuum-tight.

Of the Frame is appropriate taken on a table, in which a frame receiving Upper table section be wegbar on a bottom supported on the ground Table section is added. This allows an adjustment of the upper table section relative to the lower table section and thus a fine adjustment of a distance of the inlet module with respect to a mouthpiece one upstream the shaping device upstream Extrudiereinrichtung. The adjustment a position in the longitudinal direction or manufacturing direction of the upper table section relative to the lower table section may be provided another actuator be. The further actuator can, for example, two with a Turnbuckle connected turnbuckle spindles have. It can too be provided with three turnbuckle spindles, which over two turnbuckles connected to each other. To drive the other actuator An electric motor can be provided. Furthermore, for adjustment in a from the longitudinal direction deviating direction of the upper table section relative to the lower Table section adjusting means, preferably adjusting screws or the like, be provided. Such screws are suitably on four support legs provided with which the upper table section on the lower table section supported is.

To In another embodiment, the frame is like a carriage Movable recorded in the direction of manufacture on the upper table section. In operation, the frame is common in a fixed predetermined position relative to the upper table section fixed. Only when starting or in case of malfunction of Extrusion device or incorrect interaction of the Extruding device with downstream downstream molding device a lock of the carriage is released and thus can the frame together with the modules fixed on it quickly and easily from the mouthpiece of the extruder unit be driven away. After that, the frame can return to its original Position moved and fixed there, leaving an immediate further production can take place.

According to a further embodiment, secondary drives are provided at the outlet module or at an intermediate module provided upstream in order to drive the shaping jaws fed to the return guide section of the outlet module at a predetermined speed. Particularly in the case of mold jaw sequences with many mold jaws, unwanted speed fluctuations may occur during the movement of the mold jaw sequences because of their weight and a sliding friction which sometimes changes during operation. To avoid this problem, with the secondary drives proposed according to the invention, the shaping jaws can additionally be driven in the return guide section in the direction of the inlet module and thus a primary drive provided on the inlet module can be supported. Each secondary drive expediently comprises a secondary drive motor whose movement can be regulated as a function of a speed of a prime mover. This ensures that the forming jaws are moved as far as possible at the same speed both in the forward and in the return guide section. The prime mover may include one or more prime mover engines. The secondary drives are not mechanically coupled. They can therefore be controlled independently of each other or regulated. But it can also be provided a common scheme for both secondary drives. Overall, a particularly uniform movement of the mold jaws in the flow can thus be achieved and the quality of the profiles produced thereby can be improved.

Further it has proved to be appropriate that a pivoting device for selectively producing a driving connection of the secondary drive motor is provided with the respective Formbackenabfolge. The swivel device can be executed for example in the manner of a rocker. That's it particularly simple way possible to separate the rotary actuator from the mold jaw sequence and the Retrofit molding device.

To further requirement The invention relates to a device for producing profiled plastic pipes provided in which an extruding means for producing a plastically deformable plastic tube downstream of the above-described molding device according to the invention is subordinate. The molding apparatus may continue downstream a device for receiving the plastic pipes produced be subordinate. It can be, for example, a reel or a downstream device for cutting the plastic pipes to length a given length and / or for connection with connecting means, O-rings and the like act.

To further requirement The invention relates to a method for producing a profiled Plastic pipe provided in which the above-described molding apparatus according to the invention is used.

following Be with reference to the drawings, embodiments of the invention explained in more detail. It demonstrate:

1 a perspective view of a molding apparatus,

2 a first perspective view of the modules according to 1 .

3 a second perspective view of the modules according to 2 .

4 a perspective view of a table of the molding apparatus according to 1 .

5 a cross-sectional view in the region of the outlet module according to 1 .

6 a perspective view of an intermediate module,

7 a top view of a spout module,

8th a sectional view along the section line AA in 7 .

9 a partial plan view of the outlet module according to 7 .

10 a perspective view of the modules in the region of the outlet module,

11 a perspective view of essential components of a clamping device and

12 a perspective view of essential components of another actuator.

In the in the 1 to 5 Shaping device shown comprises a general with the reference numeral 1 designated table a supported on the ground under table 2 as well as a supported and relative to the undertable 2 movable upper table 3 , The upper table 3 has at its top two longitudinal struts parallel in its longitudinal extension 4 on which guide rails 5 are attached.

As in particular from 5 it is apparent on the guide rails 5 a trained in the manner of a carriage frame 6 about roles provided for this purpose 7 movably supported. On the frame 6 are parallel to a longitudinal direction of the longitudinal beams 4 shaft bearings 8th assembled.

On the shaft bearings 8th are a run-in module 9 , Intermediate modules 10 and an outlet module 11 supported.

The basic structure of the modules 9 . 10 . 11 is exemplified by the in 6 perspective shown intermediate module 10 clear. Each of the modules 9 . 10 . 11 has a separate base plate 12 on, which on its underside two groove-like recesses 13 for engagement in the shaft bearing 8th having. Here are the groove-like recesses 13 so executed that the modules 9 . 10 . 11 on the shaft bearings 8th can be moved for assembly or disassembly purposes in the longitudinal direction.

The base plate 12 of the intermediate module 10 is rectangular. On the base plate 12 is a box-shaped first unit 14 mounted, which has a central flow channel 15 and two laterally provided therefrom, substantially parallel return channels 16 Are defined. With the reference number 17 are in the flow channel 15 Flow guide sections and with the reference numeral 18 in the return channel 16 provided return flow guide sections, which for exact guidance of serve (not shown here) mold jaws. With the reference number 19 are channels or bores, which are below, laterally or above the flow 15 and the return channel 16 parallel to its longitudinal extent through the module 9 . 10 . 11 , in particular the intermediate module 10 , extend. The channels or holes 19 serve to carry out a cooling fluid, for example water, or the like .. In the area of the holes 19 Seals are provided with which the holes 19 when clamping the modules 9 . 10 . 11 be automatically sealed. With the proposed embodiment, it is therefore not necessary, for example, to remove an intermediate module 10 to disassemble a Kühlfluidzu- or drain line.

11 shows a perspective view of the essential components of a clamping device 20 , which for clamping the modules 9 . 10 . 11 serves. The clamping device 20 includes two waves 21 which in one of the frame 6 surrounded space below the modules 9 . 10 . 11 are arranged (see 3 ). The shafts can be sprockets provided thereon 23a and a chain (not shown) mechanically coupled. They are by means of first mounting blocks 22 rotatably on an underside of the base plate of the inlet module 9 attached. Second mounting blocks 23 , which on an underside of the base plate of the outlet module 11 are fastened, have a thread, a spindle nut or the like, which is in engagement with a corresponding external thread (not shown here), which on the outer circumference of the shafts 21 is provided. At an inlet module-side end of the shafts 21 are fittings 24 for connecting the waves 21 provided to a first drive motor (not shown here).

As in particular from the 1 to 3 . 6 . 7 and 10 it can be seen have the end faces of the modules 9 . 10 . 11 centering 25 on, which are formed here in the form of corresponding stepped oblique surfaces. The centering means 25 are designed so that the modules 9 . 10 . 11 during clamping by means of the clamping device 20 center yourself exactly and thus in particular a precise escape in the flow channel 15 In this case, the intersecting surfaces act in an upper portion of the contact surface as a horizontal centering, whereas the slightly above the base plate 12 outstanding outflow 17 and return guide sections 18 serve as vertical centerings.

Like from the 4 and 5 can be seen further extends between the longitudinal beams 4 approximately centrally along a direction of manufacture designated by the arrow H, a vacuum channel 26 , which at its upper side in the region of the inlet module (not shown here) 9 first rectangular suction openings 27 and in the course of second round intake 28 having. Instead of the first rectangular intake 27 can also all intake ports on the type of the second round intake 28 be educated. The intake openings 27 . 28 and / or the edge of the vacuum channel 26 are provided in a conventional manner with sealing means, which with the base plates mounted thereon 12 the modules 9 . 10 . 11 ensure a vacuum-tight connection. With the reference number 29 is a lifting device referred to, with which the vacuum channel 26 from a first position in which it is at least partially off the frame 6 is surrounded (see 5 ), in a second position below the frame 6 can be lowered so that the frame 6 unobstructed by the vacuum channel 26 relative to the upper table 3 along the guide rails 5 can be moved after releasing a lock not shown here.

At a bottom of the base plates 12 are provided (not shown) breakthroughs, which in their design to the first 27 and / or second suction openings 28 correspond, so that in a conventional manner, a vacuum connection can be made with the guided in the flow mold jaws.

The 5 . 7 . 8th . 9 and 10 show an advantageous embodiment of an outlet module 11 , In contrast to the intermediate module 10 in which the base plate 12 is rectangular, has the outlet module 11 a spout module base plate 30 with a different shape. The outlet module base plate 30 in particular has an extension extending therefrom in the direction of production H. 31 on, whose width is greater than a width of the vacuum channel 26 is. The extension 31 is formed so as to be capable of vacuum-sealing a length of the vacuum channel exceeding in the direction of manufacture H 26 suitable is.

In the illustrated embodiment of the outlet module 11 are on the outlet module base plate 30 two adjacent second units 32 taken longitudinally displaceable relative to the manufacturing direction H. Upstream of the second units 32 is one fixed to the outlet module base plate 30 connected third unit 32a intended. The third unit 32a For example, its geometry may be similar to that in FIG 6 shown first unit 14 ,

In the flow channel 15 a wedge stretches 33 , against which the in the flow channel 15 fed mold jaws (not shown here) start and be solved by molded with the adjacent mold jaws moldings. The wedge 33 points in Production direction H (not shown here) on a breakthrough for discharging the molding formed with the mold parts. The flow channel 15 points downstream of the wedge 33 a curved guide section 34 on, in which the (not shown here) mold jaws deflected by about 180 ° and the return channel 16 be supplied.

Each of the second units 32 is with an actuator 35 provided, each one with a spindle motor 36 adjustable spindle 37 having, in a on the third unit 32a provided thread (not shown here) engages. This makes it possible by a rotation of the spindle 37 a distance of the second units 32 relative to the third unit 32a to change the total length of the pre- 15 and return channels 16 to change. This allows the setting of a given game between the 15 and return channel 16 follow circumferential Formbackenab. For this purpose are the spindle motors 36 expediently provided with a control which adjusts a suitable game depending on a measured temperature of the mold jaws according to a predetermined algorithm. Each of the spindle motors 36 can be regulated separately. Also a common control of both spindle motors 36 is possible.

How further from the 7 to 10 it can be seen, assigns each of the second units 32 a gear 38 on which is not driven and taken separately rotatably held on a gear shaft. The flanks of the gears 38 run substantially perpendicular to the manufacturing direction H. They are thus parallel to toothed strips, which are provided on the upper side (not shown here) of the mold jaws. By starting the mold jaws on the wedge 33 the toothed racks in the gears 38 engage, an undesirable tilting or rotation of the mold jaws is avoided. Ie. the mold jaws are pulled away from and separated from each other in a direction substantially perpendicular to the previous linear path of movement by the molded article formed therewith. By the two gears 38 are independently rotatable, a particularly complication-free process control is achieved.

As in particular from the 1 . 2 . 3 and 10 it can be seen, the molding device according to the invention has a prime mover 39 at the inlet module 9 on, with the mold jaws simultaneously the flow channel 15 be supplied. Furthermore, in the area of the outlet module 11 or an intermediate module adjoining it at a small distance 10 two secondary drives 40 provided, whose other gears 41 in each of the return channels 16 intervention. Especially with long corrugators can with such secondary drives 40 the return movement of the mold jaws in the return channels 16 un supported and a total of the movement of the Formbackenabfolgen be made particularly uniform. The secondary drives 40 can be provided with a further control, with the drive speed of the mold jaws in the return channel 16 , z. B. as a function of a flow speed of the mold jaws in the flow channel 15 , is regulated. According to an embodiment not shown here, the secondary drives 40 swiveling on the respective module 9 . 10 . 11 or on the frame 6 be attached so that the other gears 41 can be quickly and easily disengaged from the toothed ridges of the mold jaws. The pivoting device can be carried out, for example, in the manner of a rocker.

The 1 . 4 . 5 and 12 show, among other things, the recording and the adjustability of the upper table 3 relative to the undertable 2 , For adjustment of the upper table 3 in the manufacturing direction H is another actuator 42 provided, which three more spindles 43 Includes, over two turnbuckles 44 connected to each other. By one of the other spindles 43 at the undercounter 2 and another of the other spindles 43 at the upper table 3 is fixed, by turning the other spindles 43 the upper table 3 opposite the undertable 2 be adjusted. For adjustment in a deviating from the direction of manufacture H oblique direction are also actuating means 45 For example, threaded bolts, provided with which legs 46 or one's legs 46 connecting lower frame 47 in a direction transverse to the direction of manufacture H is adjustable. This makes it possible to position the inlet module 9 set exactly with respect to a mouthpiece of an upstream upstream extruding device (not shown).

The function of the molding apparatus shown is as follows:
To convert the molding device, the outlet module 11 and possibly the at least one intermediate module 10 by loosening the clamping device 20 from the inlet module 9 separated. The intermediate modules 10 can simply follow from the shaft bearing 8th be lifted off. In particular, it is not necessary to separate separate screw connections for vacuum connection hoses or other clamping connections. Below are the intermediate modules to be prepared 10 on the shaft bearing 8th mounted and by means of the clamping device 20 between one 9 and discontinued modules clamped together. Other adjustments are usually not required because the inlet module 9 stuck with the frame 6 connected and remains in position opposite an upstream upstream extruder device.

By the actuators 35 and the thus provided separate mobility of the second units 32 With the scheme quickly and easily automatically a suitable match between the in the flow channel 15 and in the return channel 16 recorded mold jaws are adjusted.

The further actuator 42 allows in cooperation with the adjusting means 45 Furthermore, a quick and easy adjustment of the upper table 3 opposite an upstream upstream extruder device.

The common over a substantial length of the manufacturing direction H between the longitudinal beams 4 extending vacuum channel 26 significantly facilitates the conversion process by the modules 9 . 10 . 11 only by sealing concerns on the vacuum channel 26 vacuum-tight can be connected to it.

1

table

2

under table

3

overtable

4

longeron

5

guide rail

6

frame

7

role

8th

shaft bearing

9

feed module

10

intermediate module

11

Delivery module

12

baseplate

13

groove-like recess

14

first unit

15

forward channel

16

Return channel

17

Forward guide section

18

Return guide section

19

drilling

20

tensioning device

21

wave

22

first mounting block

23

second mounting block

23a

sprocket

24

connector

25

centering

26

vacuum channel

27

first suction

28

second suction

29

hoist

30

Delivery module base plate

31

extension

32

second unit

32a

third unit

33

wedge

34

curved guide section

35

actuator

36

Spindle motor

37

Spindle clutch

38

gear

39

primary drive

40

secondary drive

41

additional gear

42

Another actuator

43

Further spindle

44

turnbuckle

45

actuating means

46

leg

47

lower frame

H

making direction

Claims (35)

Shaping device, in particular corrugator, for producing profiled plastic pipes, in which on a frame ( 6 ) one behind the other several adjacent modules ( 9 . 10 . 11 ), each of the modules ( 9 . 10 . 11 ) at least one prefetch guide section ( 17 ) and a return guide section ( 18 ) for slidably guiding mold jaws, wherein the mold jaws so in the modules ( 9 . 10 . 11 ) are formed so that they form two circumferential mold jaw sequences, between which in a by adjacent modules ( 9 . 10 . 11 ) formed a mold cavity for molding a profile in a plastic tube received therein, wherein the modules ( 9 . 10 . 11 ) an inlet module ( 9 ), in which the return guide section ( 18 ) over a bent about 180 ° guide portion with the flow guide portion ( 17 ), the modules ( 9 . 10 . 11 ) an outlet module ( 11 ), in which the lead-leading section ( 17 ) over an approximately 180 ° further curved guide section ( 34 ) with the return guide section ( 18 ), characterized in that at the outlet module ( 11 ) in an end portion of the leader portion (FIG. 17 ) two gears ( 38 ) are mounted for engagement in each case provided at the top of the mold jaws rack, each gear ( 38 ) is aligned so that the mold jaws on leaving one of the upstream flow guide sections ( 17 ) are retracted substantially perpendicular to the direction of the linear movement path and thus separated from each other, wherein in the end region of the flow guide portion ( 17 ) wedge widening in the direction of manufacture (H) ( 33 ) and by the action of the wedge ( 33 ) separated from each other initially guided mold jaws separated at an acute angle and subsequently to the curved guide portion of the outlet module ( 11 ) for returning to the inlet module ( 9 ) are forced. Molding apparatus according to claim 1, wherein the gears ( 38 ) on both sides of the wedge ( 33 ) are mounted in opposing arrangement. Shaping device according to one of the preceding claims, wherein the outlet module ( 11 ) two oppositely arranged, the respective guide sections comprising units ( 32 ), which relative to a the outlet module ( 11 ) receiving outlet base plate ( 30 ) and substantially parallel to the direction of manufacture (H) are adjustable. Shaping device according to one of the preceding claims, wherein for adjusting each of the units ( 32 ) an actuator ( 35 ) is provided. Shaping device according to one of the preceding claims, wherein the actuator ( 35 ) one in an upstream of the units ( 32 ) on the outlet module base plate ( 30 ) attached further assembly ( 32a ) has engaging spindle. Shaping device according to one of the preceding claims, wherein for moving the spindle ( 43 ) a spindle motor ( 36 ) is provided. Molding device according to one of the preceding claims, wherein the movements of the spindle motor ( 36 ) are regulated in dependence on a measured temperature of the mold jaws such that a predetermined clearance is set between the sequence of successive mold jaws. Molding apparatus according to any one of the preceding claims, wherein each module ( 9 . 10 . 11 ) via a separate base plate provided thereon ( 12 . 30 ) on the frame ( 6 ) is supported. Shaping device according to one of the preceding claims, wherein a tensioning device ( 20 ) for clamping the adjacent modules ( 9 . 10 . 11 ) is provided. Shaping device according to one of the preceding claims, wherein the inlet module ( 9 ) fixed to the frame ( 6 ) and by means of the tensioning device ( 20 ) the at least one downstream in a production direction (H) subsequent module ( 10 . 11 ) with the inlet module ( 9 ) is clamped. Molding device according to one of the preceding claims, wherein the modules ( 9 . 10 . 11 ) Intermediate modules ( 10 ), which can optionally be inserted between the 9 ) and the outlet module ( 11 ) and with the clamping device ( 20 ) with the inlet module ( 9 ) are braced. Shaping device according to one of the preceding claims, wherein the clamping device ( 20 ) at least one further spindle ( 37 ) having. Shaping device according to one of the preceding claims, wherein the clamping device ( 20 ) in one of the frames ( 6 ) surrounded space below the modules ( 9 . 10 . 11 ) is provided. Shaping device according to one of the preceding claims, wherein the at least one further spindle ( 37 ) with the base plates ( 12 . 30 ) of input ( 9 ) and discontinued modules ( 11 ) connected is. Shaping device according to one of the preceding claims, wherein the clamping device ( 20 ) at least one tensioning device motor for locking and releasing the modules ( 9 . 10 . 11 ). Molding device according to one of the preceding claims, wherein the modules ( 9 . 10 . 11 ) via a shaft bearing ( 8th ) on the frame ( 6 ) are supported. Shaping device according to one of the preceding claims, wherein the contact surfaces of the modules which abut one another in the assembled state ( 9 . 10 . 11 ) corresponding to one another centering means ( 35 ) for horizontal and vertical centering of the modules ( 9 . 10 . 11 ) are provided. Shaping device according to one of the preceding claims, wherein underneath the modules ( 9 . 10 . 11 ) at the bottom of a sealing deductible vacuum channel ( 26 ), which extends continuously in a production direction (H) over a length of a plurality of mutually adjacent modules (H). 9 . 10 . 11 ). Molding device according to one of the preceding claims, wherein the vacuum channel ( 26 ) to a portion of the underside of the base plates ( 12 . 30 ) of adjacent modules ( 9 . 10 . 11 ) can be attached, which one through the Vorlaufführungsabschnitte ( 17 ) of adjacent modules ( 9 . 10 . 11 ) formed feed channel ( 15 ) is approximately opposite. Shaping device according to one of the preceding claims, wherein in the underside of the base plates ( 12 . 30 ) of adjacent modules ( 9 . 10 . 11 ) Breakthroughs are provided for producing a vacuum connection with provided on the mold jaws suction. Molding device according to one of the preceding claims, wherein the vacuum channel ( 26 ) vertically from one of the frame ( 6 ) substantially surrounded first position in one of the bottom of the modules ( 9 . 10 . 11 ) spaced second position below the frame ( 6 ) is movable. Molding apparatus according to any one of the preceding claims, wherein the underside of each module ( 9 . 10 . 11 ) by the provided separate base plate ( 12 . 30 ) is formed. Molding device according to one of the preceding claims, wherein the outlet module base plate ( 30 ) of the discontinuation module ( 11 ) an extension (H) extending in the direction of manufacture ( 31 ) for sealing an excess length of the vacuum channel ( 26 ) having. Shaping device according to one of the preceding claims, wherein the frame ( 6 ) on a table ( 1 ), in which a frame ( 6 ) receiving upper table section ( 3 ) movable on a lower table section supported on the ground ( 2 ) is recorded. Shaping device according to one of the preceding claims, wherein for adjusting a position in the longitudinal direction of the upper table section ( 3 ) opposite the lower table section ( 2 ) another actuator ( 42 ) is provided. Shaping device according to one of the preceding claims, wherein the further actuator ( 42 ) two with a turnbuckle ( 44 ) connected turnbuckle spindles ( 43 ). Shaping device according to one of the preceding claims, wherein for adjustment in a direction deviating from the longitudinal direction of the upper table section (FIG. 3 ) relative to the lower table section ( 2 ) Adjusting means ( 45 ), preferably setscrews are provided. Shaping device according to one of the preceding claims, wherein the frame ( 6 ) in the manner of a carriage in the direction of manufacture (H) movable on the upper table section ( 3 ) is recorded. Molding device according to one of the preceding claims, wherein the carriage is in a predetermined fixed position relative to the upper table section (Fig. 3 ) is fixable. Shaping device according to one of the preceding claims, wherein at the outlet module ( 11 ) or at an intermediate module ( 10 ) Secondary drives ( 40 ) for driving the return guide sections ( 18 ) supplied molding jaws are provided at a predetermined speed. Molding device according to one of the preceding claims, wherein each secondary drive ( 40 ) comprises a, preferably separately controllable, secondary drive motor whose movement in dependence on a speed of a prime mover ( 39 ) is controllable. Shaping device according to one of the preceding claims, wherein a pivoting device for selectively producing a driving connection Secondary drive motor is provided with the respective Formbackenabfolge. Shaping device according to one of the preceding claims, wherein the swivel device is designed in the manner of a rocker. Device for producing profiled plastic pipes, in the case of an extruder device for producing a plastic deformable plastic tube downstream of the molding device according to one of the preceding claims is subordinate. Method for producing a profiled plastic pipe, in which the molding apparatus according to any one of the preceding claims is used.