DE102008021237A1 - Molding device i.e. corrugator, for manufacturing profiled plastic pipes, has vacuum channel provided within inlet, outlet and intermediate modules and extending in production direction over length of inlet, outlet and intermediate modules - Google Patents

Abstract

The device has inlet, outlet and intermediate modules (9, 11, 10) supported on a frame (6). The inlet module connects a backflow guide section with a forward flow guide section by a guide section bend at 180 degree. The outlet module connects the forward flow guide section with the backflow guide section by the guide section. A vacuum channel is inserted at a lower side of the inlet, outlet and intermediate modules in a sealed manner. The vacuum channel is provided within the modules and extends in a production direction over length of the inlet, outlet and intermediate modules. Independent claims are also included for the following: (1) a method for manufacturing profiled plastic pipes (2) a device for manufacturing profiled plastic pipes.

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.

A generic corrugator in modular design is from the WO 91/03366 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.

The DE 197 00 028 C2 discloses a corrugator to which a plurality of vacuum and cooling hoses are attached. The known corrugator is not designed in modular design and can not be converted easily as a result.

task The invention is to the disadvantages of the prior art remove. It is a forming device, in particular a corrugator, for Manufacture of profiled plastic pipes are specified, the fast and easy in terms of a new geometry requirement a component to be manufactured with it can be adapted.

These The object is achieved by the features of claims 1, 32 and 33 solved. Advantageous embodiments The invention will become apparent from the features of the claims 2 to 31.

To According to the invention, it is provided that below the Module on the underside sealingly attachable vacuum channel is provided, which is continuously in a manufacturing direction on a length of several adjacent modules extends. - With the proposed embodiment eliminates the time-consuming Disassembly and assembly of a plurality of separate vacuum lines every module. With the vacuum channel can in a single operation when converting the molding device, the modules sealing from created at the top of the vacuum channel and thus quickly and easily one Vacuum connection can be made with the modules.

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 In an advantageous embodiment, the vacuum channel is connected to a section the bottom attachable, which one, by the flow guide sections the adjacent modules formed feed channel approximately opposite. This enables the realization of particularly short vacuum paths.

At A bottom of the modules can have breakthroughs for producing a vacuum connection with the mold jaws provided suction openings may be provided. It is the bottom of each module conveniently formed by a separate base plate provided thereon. By doing Each module has a separate base plate, it can be self-sufficient Mounting unit moved on the frame and / or lifted off it. This facilitates the conversion of the molding apparatus.

In the base plates of the modules provided breakthroughs are suitably designed and arranged that they are overlapped by the vacuum channel and thereby one to to the suction of the mold jaws reaching vacuum connection can be made quickly and easily.

Usually, the vacuum channel is in a first position, in which it is substantially surrounded by the frame and arranged with a sealing device provided thereon so that the modules rest when placed on the shaft bearing with its base plate sealingly on the sealing device of the vacuum channel. In the case of a malfunction or when starting up an extruder upstream upstream of the former, it may be necessary for the module block as a whole to be quickly removed from a die of the extruder. For this purpose, the vacuum duct can advantageously be moved from a first position, which is substantially surrounded by the frame, into a second position, which is at a distance from the underside of the modules, below the frame. This allows movement of the module block relative to the frame and away from the module Mouthpiece of Extrudiereinrichtung.

Of the Vacuum channel can be through essentially transverse to the direction of manufacture extending partitions in several segments un distributed. Each segment is expediently separate with a vacuum source connected with the interposition of a valve. This makes it possible to apply the vacuum applied to the length of the vacuum channel in adaptation to the respective module configuration by Selection of a suitable number of vacuum-charged segments vary. Apart from that, it is also possible to have any segment separately to control or regulate.

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 having the vacuum channel. So it can in principle the molding device, a vacuum channel can be used, which is for example, over a substantial part of the frame Surrounded interior extends in the longitudinal direction. For certain Module combinations, the vacuum channel has an overshooting Length up, d. H. it extends in the direction of manufacture the spout module beyond, creating the vacuum channel or a segment of which would suck in false air. Such an overshooting Length of the vacuum channel may be in some module combinations for example, by the proposed, from the outlet module base plate extending extension be sealed vacuum-tight.

To A particularly advantageous further embodiment is a clamping device provided for clamping the adjacent modules. In order to It is possible, for example, the adjacent modules in a horizontal direction to brace to a solid block, which then rests on the frame as a whole. there the clamping device can be designed particularly simple, so that clamping the modules quickly and easily feasible is. It thus eliminates the significant according to the prior art Effort of screwing the adjacent modules together as well as the screwing of the modules to the receiving them common base plate. 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 Subsequent module can be braced with the inlet module. By doing the inlet module is firmly connected to the frame is the entire Module arrangement from the outset relative to the frame always in one fixed position. This saves adjustment work. Furthermore This allows the clamping of the modules and the design make the clamping device easier.

In a simple embodiment, the corrugator only one Inlet and a spanned outlet module on. After a more complex design, the modules also include intermediate modules, which can be switched on between the inlet and outlet module and with the clamping device between the inlet and the outlet module clamped are. The proposed molding device can thus be universally by optional interposition of intermediate modules adapt to a wide variety of given designs. It remains the assembly and the clamping of the modules nevertheless simple and easy to carry out.

To a particularly advantageous embodiment, the clamping device at least one spindle. The spindle is designed so that made a tensile stress between the inlet and the outlet module can be. Possibly between the inlet and outlet modules Intermediate intermediate modules can thus quickly 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. These can be attached to the base plates mounting blocks be provided, in which the spindle both rotatable and in a thread is guided, so that so that with the Spout module is clamped. To a particularly uniform Can ensure tension of the modules in the longitudinal direction two substantially mutually parallel Spindles be provided. The vacuum channel can in this case between be arranged the spindles.

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 has one or more spindles, Preferably, each of the 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 can be applied quickly and easily, reducing the durability of the Corrugators overall is improved.

According to another embodiment, the Modules supported by a shaft bearing on the frame. In this case, the shaft bearing is expediently attached to two longitudinal bars extending in the longitudinal direction of the substantially rectangular frame. The shaft bearing forms a kind of rail guide on which the modules can be slidably stored for mounting. They can be subsequently moved by the action of the clamping device on the shaft bearing, for example in the direction of the intake module for bracing.

Conveniently, are at the in the assembled state adjacent contact surfaces the modules corresponding centering means for horizontal and vertical centering of the modules provided. It acts it is about mutually corresponding inclined surfaces, which with increasing tension of the adjacent modules form-fit together and so an exact Ensure alignment of adjacent modules. The self-centering design of the modules continues to simplify and speed up retrofitting the molding device at.

To In a further embodiment, the base plates of the modules are in their longitudinal extension in the production direction slightly formed shorter than recorded on the base plates Units. Ie. have the contact surfaces of the units a slight projection over the base plates on. This ensures when the modules are clamped between the contact surfaces a positive connection educates itself. The formation of a non-positive connection of By contrast, adjacent base plates of the modules is advantageously avoided.

To In a further embodiment, the outlet module has two mutually arranged opposite, the respective guide sections comprehensive assemblies, which relative to the outlet module base plate and adjustable substantially parallel to the direction of manufacture are. The proposed separate adjustability of the units with respect the 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 adjust everyone The units may be provided an actuator. The actuator Advantageously, one in an upstream of the Units mounted on the outlet module base plate further Unit engaging further spindle on. The on the outlet module base plate attached further unit can be designed similarly be like a module of an intermediate module. With the actuator So can a distance of the movable units relative to be set further unit. To move the others Spindle may be provided a spindle motor. As a particularly advantageous it has been proven 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 Another particularly advantageous embodiment is at each the units a gear for engaging in a top the mold jaws provided rack mounted, the gear is aligned so that the mold jaws when leaving a through the upstream flow guide sections given linear movement path substantially perpendicular to Direction of the linear path of movement withdrawn and thus be separated from each other. In the outlet module is between the units a pointed wedge running counter to the direction of manufacture provided with those in the intermediate modules adjacent to each other Guided form baking initially in a pointed Angle separated and subsequent to the curved guide portion the accumulation module for returning to the inlet module are forced. The problem arises in the prior art, the problem that the mold jaws when starting at the wedge from the previous deviate and tilt linear motion path. That can be the detachment the mold jaws of the molded plastic pipe hinder and damage in the molded plastic tube ago call. To overcome this disadvantage is ensured with the proposed gear, that the mold jaws also at a run on the wedge-shaped Slanted surface of the discharge module safe and reliable in a direction perpendicular to the previously described linear path of movement withdrawn and thus an uncomplicated demolding is ensured. In this context, it is particularly advantageous that each mold baking sequence is a separate, non-powered Gear is assigned. It has been shown that the provision of a separate toothed wheel for each of the yoke chains too clearly better results than, for example, use a single gear, which at the same time in the left and the right Forming jaw sequence engages.

The frame is expediently received on a table, in which a frame receiving the upper table section is movably received on a supported on the ground lower table section. This allows an adjustment of the upper table section relative to the lower table section and thus a fine adjustment of a spacing of the inlet module with respect to a mouthpiece of an upstream of the molding device upstream Extrudiereinrichtung. The Adjustment of a position in the longitudinal direction or production direction of the upper table section relative to the lower table section, a further actuator can be provided. The further actuator can, for example, have two turnbuckle spindles connected to a turnbuckle. It can also be provided three turnbuckle spindles, which are connected to each other via two turnbuckles. For driving the further actuator, an electric motor may be provided. Furthermore, adjustment means, preferably adjusting screws or the like, may be provided for adjustment in a direction deviating from the longitudinal direction of the upper table section relative to the lower table section. Such screws are expediently provided on four support legs with which the upper table section is supported on the lower table section.

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 usually in a fixed predetermined Position fixed relative to the upper table section. Only at Startup or malfunction of Extrudiereinrichtung or an incorrect interaction of the Extrudiereinrichtung with the downstream rectified molding apparatus becomes a Locking the carriage solved and thus can the frame together with the modules fixed on it quickly and easily from the mouthpiece the extruder device are moved away. After that, the frame can moved back to its original position and fixed there so that immediate further production can take place.

To a further embodiment are at the outlet module or on a upstream intermediate module provided secondary drives for Drive the return guide section of the outlet module fed mold jaws at a predetermined speed intended. Especially with mold baking sequences with many mold jaws It may be because of their weight and one in operation sometimes changing Sliding friction to undesirable velocity fluctuations come in the movement of Formbackenabfolgen. To avoid this Problems can be solved with the inventions proposed Secondary drives the mold jaws in addition Return guide section in the direction of the inlet module driven and thus provided on the inlet module primary drive get supported. Each secondary drive includes suitably a secondary drive motor, its movement depending on a measured speed a primary drive is adjustable. This will ensure that the mold jaws in both the forward and in the return guide section as far as possible to move at the same speed. The prime mover may have one or more prime mover engines include. The secondary drives are not mechanically coupled. They can therefore be controlled independently of each other or regulated. But it can also be a common scheme be provided for both secondary drives. All in all Thus, a particularly uniform movement of the mold jaws in Pre-run reached and the quality of the profiles generated be improved.

Further it has proved to be appropriate that a Pivoting device for selectively producing a driving Connection of the secondary drive motor with the respective Form baking sequence is provided. The swivel device may, for example be carried out in the manner of a rocker. That's it Particularly simple way possible, the pivot drive of to separate the baking jaw chain and retrofit the molding device.

To Another requirement of the invention is a device for Production of profiled plastic pipes provided in the an extrusion device for producing a plastically deformable Plastic pipe downstream of the above explained Subordinate mold according to the invention is. The molding apparatus may continue downstream Subordinate device for receiving the manufactured plastic pipes be. It may be, for example, a reel or a downstream Device for cutting the plastic pipes to a predetermined length Length and / or with connecting means, O-rings and the like act.

To Another requirement of the invention is a method for the production a profiled plastic tube provided in which the above explained molding device according to the invention is used.

following Be with reference to the drawings embodiments of the Invention explained in more detail. Show it:

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 area 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 Be zugszeichen 17 are in the flow channel 15 Flow guide sections and with the reference numeral 18 in the return channel 16 designated return guide sections referred to, which serve for the exact guiding of (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 can be produced. 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 has a breakthrough in the direction of manufacture H (not shown here) for discharging the molding formed with the molding jaws. 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 circumferential mold jaw sequences. 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 one it with a small distance subsequent intermediate module 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 supports and overall 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 swivel 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

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• WO 91/03366 [0002]
• - DE 19700028 C2 [0003, 0007]

Claims (33)

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 below the modules ( 9 . 10 . 11 ) a sealable on the underside of vacuum duct ( 26 ), which extends continuously in a production direction (H) over a length of a plurality of mutually adjacent modules (H). 9 . 10 . 11 ). Molding apparatus according to claim 1, wherein the vacuum channel ( 26 ) is attachable to a portion of the underside, which, through the flow guide sections ( 17 ) of adjacent modules ( 9 . 10 . 11 ) formed feed channel ( 15 ) is approximately opposite. Shaping device according to one of the preceding claims, wherein at the bottom of the modules ( 9 . 10 . 11 ) Breakthroughs are provided for producing a vacuum connection with provided on the mold jaws suction. Molding apparatus according to any one of the preceding claims, wherein the underside of each module ( 9 . 10 . 11 ) provided by a separate base plate ( 12 . 30 ) is formed. 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. Shaping device according to one of the preceding claims, wherein an 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 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 the production direction (H) subsequent module ( 10 . 11 ) with the inlet module ( 8th ) 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 ) has at least one spindle. Shaping device according to one of the preceding claims, wherein the clamping device ( 20 ) in one of the frames ( 6 ) surrounding space below the modules ( 9 . 10 . 11 ) is provided. Shaping device according to one of the preceding claims, wherein the at least one spindle 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 the outlet module ( 11 ) two oppositely arranged, the respective structural sections comprising building units ( 32 ), which relative to a Auslaufmodul- base plate ( 30 ) of the discontinuation module ( 11 ) 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 ) engaging another spindle ( 43 ) having. Shaping device according to one of the preceding claims, wherein for moving the further 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. Shaping device according to one of the preceding claims, wherein on each of the units ( 32 ) a gear ( 38 ) is mounted for engagement in a provided on the upper side of the mold jaws rack, and wherein the gear ( 38 ) is brought so that the mold jaws on leaving one of the upstream flow guide sections ( 17 ) given linear movement path substantially perpendicular to the direction of the linear movement path and thus separated from each other. 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 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, a pivoting device for selectively establishing a driving connection the secondary drive motor with the respective Formbackenabfolge is provided. Shaping device according to one of the preceding claims, wherein the pivoting device designed in the manner of a rocker is. 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 is subordinated to one of the preceding claims. Method for producing a profiled plastic pipe, wherein the molding apparatus according to any one of the preceding claims is used.