DE2832586A1 - Plastics tubes mfg. installation - has series of support mandrels in radially spaced configuration and moving into coating, hardening, and tube removal stations (NL 29.1.79) - Google Patents

Abstract

Plastics tubes are made in a sequential series of operations on a set of spaced mandrels radially supported around a common central support tube which is rotated to position each mandrel in turn into >=1 station at which a mandrel is coated with resin, >=1 station at which the resin is partially hardened, and >=1 station at which the tube is removed from the mandrel. These operations are carried out simultaneously. Each mandrel is constructed to have respective open end, closed ends and a longitudinally extending sleeve with an inlet and outlet at the open end. Cooling or heating medium is introduced into the mandrel as required. At each coating station the medium used is at a temp. lower than the hardening temp. of the resin. The hardening station mandrel(s) use a medium at a temp. above the hardening temp., whilst the tube removing station mandrel(s) uses a medium at a temp. below the hardening temp.

Description

Method and device for manufacturing

of plastic pipes The invention relates to a method for the series production of plastic pipes made of a hardenable resin as well as on a machine to carry out the procedure.

Know fiber-reinforced tubular objects such as plastic pipes be made in such a way that one impregnated with a curable, liquid resin Inner layer on a rotatingly driven one with a release agent coated mandrel is angled. Then a tape is made with the liquid Resin-impregnated fiber strands, such as glass fiber strands, in a pattern of helical lines wound in several layers on the rotating mandrel. The resin is then on top of it brought at least partially to hardening, whereupon the resulting Fohr is cooled and removed from the mandrel. The mandrel is then cleaned and again with a release agent treated, whereupon another pipe gefe in the manner described above rti. # t can be. The pipes removed from the mandrel are then fully cured.

For the manufacture of plastic pipes, however, not all of them are described process steps are necessary. So can Donrn without the inner layer, without the reinforcing fibers or without the treatment of the mandrel with a release agent are manufactured.

Tn one experienced in the creation of fiber-reinforced plastic pipe the mandrel mandrel is manually transferred between three or more workstations. At a first station, the inner layer, the fiber strands and the resin are applied opened the thorn. The resin is hardened at a second station, and at a third station the finished pipe is removed from the mandrel. This method has numerous.? # advantages, including that a large number of workers is necessary for the transfer of the mandrel from one station to the other. Through this arise be; the manufacture of pipes high labor costs. Another disadvantage is that the temperature of the mandrel during the transfer between the Workstations can not be controlled, so that the pipes harden unevenly This means that Iznd cannot obtain a uniform quality.

A third part consists in the fact that the mandrel during the transfer between the workstations cannot be rotated, so that the resin thereof drips off. As a result, raw materials are lost and the manufacturing facility becomes substantial dirty.

U.S. Patent 3,519,520 describes a machine for the manufacture of Plastic pipes, in which all necessary for the production of the pipes Process steps are carried out on a single mandrel. With this machine the mandrel does not need to be transferred between several work stations, However, the manufacture of the tubes is quite expensive, since all of them are used for one mandrel the auxiliary equipment necessary for production must be available, i.e. Devices for applying the release agent, devices for applying the with Resin-impregnated inner layer, facilities for applying the resin-impregnated Fiber strands and curing devices, cooling devices and devices for Removing the finished pipe.

A machine according to US Pat. No. 3,519,520 can also be three in a horizontal plane Have plane arranged at regular parallel spacings, which one after the other can be operated by a back and forth movable switch, although each mandrel has its own facilities for removing the finished tubes.

In # Fig. 17 of US Pat. No. 3,616,063, a machine is shown at which are some of the shortcomings of having. only one mandrel working machines eliminated are. In the machine described several horizontal mandrels are together with a rotary drive for each mandrel arranged on a rotatable frame. The machine has the shape of a lying wheel, the spokes of which are formed by the spikes, and its rim represented by a rail is along which the mandrels revolve around a vertical central axis. The thorns move along the rail from one workstation to another.

At the workstations there are facilities for the individual process steps available. There are heating devices at the curing station, and at one In another station there are facilities for removing the pipes.

A disadvantage of this machine is that it is a very large one Floor space required. This increases the construction costs for a plant for the Manufacture of such pipes.

Another disadvantage is that the mandrels to remove the finished pipes loosened at both ends and removed from their supporting devices Need to become.

This is a very time-consuming process in which, in addition, the There is a risk that a heat transfer fluid supplied to the mandrel from the inside to harden the pipes when they are removed and contaminate the pipes.

There is thus a need for a method and a machine for the series production of fiber reinforced plastic pipes to low plant and operating costs at which the pipes can be easily removed from the respective Mandrel are removable.

The invention provides a method and a machine which the comply with the above requirements. In a method according to the invention individual plastic pipes made of a hardenable resin continuously on a number of horizontally arranged thorns formed, which at the same time gradually move between move individual workstations. VDrgcviews are at least one workstation for applying resin to the mandrel, at least one station for curing the resin applied to the mandrel and at least one station for removing the at least partially cured pipe from the mandrel.

The workstations £ # ö'n'e'n 'are essentially in the same radial direction Distance to a horizontal central axis essentially at the same circumferential distances arranged around them. Each mandrel moves step by step from one station for applying the resin via a curing station and a removal station of the pipe back to the application station.

The number of mandrels is preferably equal to that of the work stations, This means that the auxiliary equipment required for the production of the pipes is economical be used.

If the number of mandrels is the same as that of the workstations, then the mandrels at the same time corresponding to the circumferential distances of the work stations Steps around the horizontal central axis.

The surface temperature is adjusted accordingly at the individual work stations set for the process step to be carried out in each case. While applying of the resin on the mandrel, its surface temperature is below the curing temperature of the resin held by a coolant with a temperature below the curing temperature Temperature is directed along a flow path through the mandrel. That from the Coolant emerging from the mandrel is returned to a coolant tank. The supply of coolant to the mandrel is interrupted at a curing station, and the mandrel is now a heat transfer medium with a temperature above the curing temperature of the resin lying temperature supplied from a heat transfer tank. The heat transfer medium flows through it the mandrel along the same flow path as the coolant before. at a rise in temperature of the fluid then exiting the mandrel this diverted from the coolant tank to the heat transfer tank to generate thermal energy to save.

The fluid is preferably diverted when the exiting fluid between that of the heat carrier and the temperature of the coolant has reached.

The heat transfer medium is continuous at the or each curing station passed through the respective mandrel to cure the resin. Becomes a thorn then moved from a curing station to the removal station, the supply of the Interrupted heat carrier and added the supply of a coolant. This flows through the mandrel along the same flow path as the heat transfer medium before. The temperature of the sealing agent is below the curing temperature of the resin, preferably close to the ambient temperature, so that the tube can safely be transported by hand after removal can be. After the supply of coolant has started, the exiting fluid becomes diverted from the Wärtneträ, gerbehält to a coolant tank. This happens, as soon as the temperature of the fluid exiting the mandrel drops, preferably at the time at which the temperature of the exiting fluid is approximately lies in the middle between the temperature of the heat transfer medium and that of the oil.

For setting the temperatures of the heat transfer medium and the coolant these are passed through a heat exchanger zone after exiting the mandrel. There is a heating device for the heat transfer medium and a cooling device for the coolant facility provided. The temperatures of the fluids can be adjusted before or after they are fed to the respective storage container or were.

The mandrels used preferably have an elongated, cylindrical, at one end open and at the other closed coat, at the open end is a Flow inlet and a flow outlet are present and extend within the shell a stream for them fluids used for temperature control. The flow path includes one from the closed end of the shell to the flow outlet at the open end of the same leading outlet channel and one between the outlet channel and the inner surface of the shell from the flow inlet to the closed end of the shell leading intake port. The fluid used to control temperature flows through the flow inlet into the inlet channel. During the flow of the fluid There is direct heat exchange along the inlet channel to the closed end of the jacket between him and the mantle of the thorn.

The fluid then flows from the closed end of the shell along the outlet channel and through the flow outlet back to the respective storage container. From the arrangement of both the flow inlet and the outlet on one At the end of the jacket there is the advantage that a pipe is closed when it is removed End of the jacket not from the fluids used to control the temperature can be contaminated.

The outlet channel is preferred with a view to simplifying manufacture designed as a tube and arranged coaxially in the cylindrical jacket. Between the inlet and the outlet is preferably one with an insulating material Filled isolation chamber arranged. This prevents heat exchange between the fluid exiting via the outlet with the fluid flowing in via the inlet Fluid. A preferred insulating material is air as it is at all times is available and has a low thermal conductivity.

Devices for the rotary drive of the individual are preferred Spines present around their long axes. This prevents resin from dripping off the Application station and the or each curing station, prevents the development of crooked Pipes through sagging mandrels in front and allows manufacturing of pipes with uniform wall thickness.

For the supply and discharge of fluids to and from the A flow distributor is provided for thorns.

This has a transverse to the central axis around which the Move mandrels gradually, arranged first disc, which gradually each is rotatable around the central axis by essentially the same angle, around which the mandrels move in individual steps. Furthermore, the distributor has one of the first complementary but fixed discs. The slices are from a number of first openings for the feed, each associated with a mandrel a fluid penetrated to the thorns. The first openings are essentially arranged at equal circumferences around the axis of the respective disc, so that each opening of the second disk before and after each rotation of the first disk is aligned with an opening of the latter. Furthermore, the two discs have a Number of second openings, each assigned to a mandrel, for the return of the fluid from the mandrels. The second openings are also in the essentially at equal circumferential distances around the axis of the respective disk arranged so that each opening of the second disc before and after rotation of the first disc is aligned with an opening in the latter. At the first openings the second disk are supply lines for temperature control Fluid connected. The supplied fluids flow through the each associated first opening of the first disk in the one associated therewith Mandrel. At the second openings of the second disk there are lines to lead back connected to the fluid used for temperature control.

The respective fluid flows through the associated second Openings of the first and the second disc and then becomes the respective storage container returned.

The escape of fluids between the adjacent Sealing devices prevent surfaces of the two panes. these can be optionally attached to the surface of the first or the second disc. The individual seals surround each opening of the disc at which they are attached.

The following are exemplary embodiments of the invention with reference to the drawing explained. 1 shows a side view of a pipe manufacturing machine for Representation of the relationships between the individual parts of the same, FIG. 2 a View of the pipe production machine in the direction of arrows 2-2 in FIGS. 1, 3 a view of the pipe manufacturing machine in the direction of arrows 3-3 in Fig. 1, Fig. 4 shows a view of the pipe production machine in the direction of arrows 4-4 in FIG. 1, 5 shows a partial side view of the headstock of the pipe manufacturing machine in the direction the arrows 5-5 in Fig. 3, Fig. 6 is a partial sectional view of the headstock the line 6-6 in Fig. 5, Fig. 7 is an end view of a drive spindle in the direction the arrows 7-7 in FIG. 6, FIG. 8 shows an enlarged sectional view of one in FIG. 1 area marked 8, Fig. 9 is a sectional view of a part of the headstock according to the line 9-9 in Fig. 2, Fig. 10 is a view in Section along the line 10-10 in FIG. 9, FIG. 11 shows an end view of the headstock facing end piece of a mandrel used in the machine according to Fig. 1, Fig. 12 is a view in section along the line 12-12 in FIG. 11; FIG. 13 is a view a flow distributor of the pipe manufacturing machine in the direction of arrows 13-13 in Fig. 5, Fig. 14 a view in section along the line 14-14 in Fig. 13, Fig. 15 is a view corresponding to FIG. 14 of a flow distributor in another Embodiment and FIG. 16 is a schematic representation of the temperature control devices the pipe manufacturing machine shown in FIG.

A machine 9 shown in Fig. 1 to 4 for the continuous Manufacture of plastic pipes 10 from curable resin has a frame 11 with four upright supports 12 to 15 at the corners of the machine. The lower ends the supports 12 and 13 are at the two ends of a horizontal, transverse Base plate 18 welded to the end 20 of the machine on the headstock side. The lower Ends of the other two supports 14, 15 are at the ends of a corresponding base plate 22 welded to the tailstock-side end 24 of the machine. The ones used in the following Directions refer to a longitudinal view of the machine from the tailstock end. Corresponding designations are given in FIGS. 2 and 4.

The two Bodenplatbn 18, 22 rest on a base 25 between A cross member 26 extends over the upper parts of the tailstock supports 12, 13. This has an inclined step 27 on its underside 29, so that the underside on the right side of the machine is lower than the standing surface. Between A box girder 28 runs along the two tailstock supports 14, 15.

To form plastic pipes 10, six horizontal, elongated, Rotating drivable mandrels 34-1 to 34-6 are available. These are essentially in equal radial distances around the horizontal axis of one described below, centrally arranged support tube 38 arranged.

The mandrels are substantially equidistant around the axis arranged. Looking from the tailstock 24 in the longitudinal direction of the machine if the mandrel 34-1 is in the 7 o'clock position, the mandrel 34-2 in the 9 o'clock position, the mandrel 34-3, in the 11 o'clock position, etc. (Fig. 4). Every thorn is included at a workstation. At station 58A occupied by mandrel 34-1, a Inner layer, a resin and fiber strands 186 applied to the mandrel. To those of the Thorns 3ß-2, 34-3, 34-4 and 34-5 occupied stations 58B and 58C and

58D and 58E, respectively, the resin applied to the mandrels becomes progressive hardened, so that an at least partially hardened tube is formed. At the from Station 58-S occupied by mandrel 34-6, the pipe is removed from the mandrel.

Then the mandrel is then cleaned and a release agent treated to make it easier to remove the next tube.

Each mandrel is by means of its own drive, described below can be set in rotation about its axis.

In addition, a further drive 59 described below is provided, which is used to move the mandrels at the same time by essentially one of their mutual circumferential distance corresponding step around the longitudinal axis of the support tube 38 around so that each mandrel is before and after such a rotation each located at a workstation. For the production of a plastic pipe for example, the mandrel 34-1 rotated and at station 58A if necessary with an inner layer, wrapped with a resin and fiber strands and then moved sequentially to stations 58B, 58C, 58D and 58E where the resin cured will. The at least partially cured tube is then dated at station 58S Mandrel 34-1 removed.

The arrangement described and shown in the drawing offers the advantage that only one set of auxiliary equipment is required for the six mandrels is. So it is only a device for applying a resin-soaked inner layer, a device for applying resin-impregnated fiber strands, a set of devices for curing the resin, means for cleaning the mandrels, means for removing the finished pipes, etc., so that there are considerable savings in investment and operating costs. Another advantage of the machine is there in that they are due to the turret arrangement of the mandrels compared to known ones Machines for the simultaneous production of six plastic pipes with one relatively small footprint.

One of the carrying devices carrying the six pins has a horizontal, Cylindrical support tube 38 extending over the entire length of the machine on. As can be seen in Fig. 8, the support tube 38 is at the tailstock end of the machine by means of a horizontal hollow shaft 40 in bearing blocks 42 on the top of the Box girder 28 and mounted on the right support 15.

As can be seen in Fig. 2 and 5, the end of the headstock des support tube 38 is carried by a bearing assembly 50. A rotatable part 51 of the Bearing assembly is attached to a vertical plate 52, which is one with a the cross member 26 penetrating opening 57 has aligned opening. At the Plate 52 is a cylindrical plate 65 at the end of the support tube on the headstock side screwed on. A fixed part 53 of the bearing assembly is on an annular flange 54 of a pipe section seated in the cylindrical opening 57 of the cross member 26 screwed on.

The support device also has two vertically arranged, irregularly shaped spiders 60, 62 on. These each have six radially protruding Arms 64 and a central opening 65, with which they are attached to the two ends of the support tube are put on. The support spider 60 on the headstock side is on a retaining ring 66 welded on, which in turn is welded to the relevant end piece of the support tube 38 is. The tailstock-side support spider 62 is in the same way on a retaining ring 68 welded on, which in turn is welded to the support tube near the end in question is. The arms 64 of the support spiders 60, 62 each have a semicircular shape at the outer end Cutout 70. In each cutout 70 of the support spider 60 on the headstock side a cylindrical mandrel holder 72 fitted and protruding radially inward by means of a Flange 74 screwed to the support bracket.

On the mandrel holders 72 are the ends of the headstock Spikes fastened by means of screws, not shown. The tailstock ends the mandrels are each mounted in a holder 76, which is in the semicircular Cutout 70 of the respective arm 64 of the support spider 62 is fitted. How to get in 8-10, each bracket 76 has a radially inwardly protruding one Angle bracket 78 which is attached to the arm 64 in question by means of a screw 80 is.

Extend on the left and right side of the sewing machine upper or lower box girder 82 or 84 over the entire length of the machine, The two carriers carry the auxiliary equipment necessary for the production of plastic pipes. The upper beam is welded to the upper parts of the two left supports 12 and 14.

The lower support 84 extends over the two supports 12, 13 of the headstock and rests at this end on a console 86, which the side 88 facing away from the tailstock is attached to the right support 13.

At the tailstock, the lower support 84 rests on a similar bracket 90, which is attached to the side of the right support 15 facing away from the headstock is. Since the two right supports 13 and 15 are not aligned with each other, runs the lower beam 84 on the inside 94 of the headstock support 13 and on the outside 95 of the tailstock support 15. The lower beam stands at both ends of the machine protrudes over the supports.

A device for applying a resin-impregnated inner layer has a winding carriage 98, which has two spools 100 of a fiber reinforcement material wearing.

The winding carriage 98 is mutually parallel spaced along two Rails 105 arranged one above the other can be moved, which by means of a number of Struts 104 are attached to the top and bottom of the lower box girder 84.

As shown in Fig. 1 b s 3, the winding carriage 98 is means an endless chain 10o reciprocally movable along the lower support 84. the Chain 106 runs over a near the tailstock-side end of the lower girder the left side of the same arranged sprocket 108 and another, near the Headstock side iron end of the beam on the left side of the same arranged it Chain wheel 112. The chain 106 is driven by means of a Sprocket 114, which is seated on a shaft 116 penetrating the lower carrier 84. the Shaft 116 carries another sprocket 118 at the other end. Near the drive sprocket 114, the chain 105 is guided over a guide wheel 120, which the chain around the Driving wheel leads around.

The drive sprocket 114 is in mesh with chain links on the upper run 122 of the chain 106, while the winding carriage with a link of the lower run 124 of the chain is connected.

The sprocket 118 seated at the other end of the shaft 116 is over an upwardly extending endless chain 126 driven by a sprocket 128, which is above the sprocket 118 at one end of a horizontal, transverse to the longitudinal axis the machine arranged shaft 130 is attached. The shaft 130 is pneumatic via a actuatable friction clutch 134 can be driven by a hydraulic motor 132. The hydraulic motor 132 is attached to the underside of a horizontal support plate 136, which in turn left of the inclined step 27 on the underside of the cross member 26 on the headstock side End of the machine is attached. The end of shaft 130 facing away from motor 132 is held in a bearing 138, which by means of a support 140 on the headstock remote side 142 of the cross member 26 is attached.

As explained below, the hydraulic motor 132 is also used for the rotary drive the mandrel at station 58A for winding the inner ply thereon. This ensures that there is a uniform inner layer at station 58A the mandrel is applied because of the rotation of the mandrel and the longitudinal movement of the winding carriage 98 in the direction of the tailstock-side end of the machine inevitably towards each other are matched.

As soon as the winding carriage 98 reaches the end of the machine on the tailstock side reached, the drive-transmitting connection between the hydraulic motor 132 is achieved and the shaft 130 automatically interrupted by means of the friction clutch 134 and cut off the inner layer material. The return of the winding carriage 98 to The end of the machine on the headstock side is carried out by means of a on the lower support 84 arranged return drive 144, which carries the drive sprocket 114 Shaft 116 drives through a belt 146 and pulley 148.

To adapt to mandrels of different diameters, the three are for chain wheels 114, 118 and / or 128 used to drive the winding carriage 98 exchangeable, after applying the inner layer are soaked with a resin Baserstrenge 186 applied to the mandrel by means of a second winding carriage 152. The second winding carriage is moved by means of a first endless chain 54, which is guided along the left side of the upper box girder 82 and via one near the tailstock end of the machine on the left side of the upper Carrier-arranged sprocket 156 and a double sprocket 158 runs, which on one after the headstock-side end of the machine on the left side of the Upper beam attached shaft is mounted. The drive of the first chain 154 serves a second endless chain 160, which over one of the two chain wheels of the Double sprocket 158 and a drive sprocket 164 runs. This one sits on top of that End of a horizontal drive shaft aligned with the first drive shaft 130 166, which can also be driven by the hydraulic motor 132. Since this one too provides the rotary drive for the mandrel located at station 58A is rotation of the mandrel and the movements of the ickel slide 152 are inevitably coordinated with one another, so that a uniform Layer of fiber strands also applied to the mandrel will. The two red drive chain 160 for the second winding carriage runs over a plurality of tensioning rollers 167 accommodated in a housing 168. the drive chain 160 covering housing 168 is on top bracket 82 and on the left headstock support 12 screwed on.

The second winding carriage 152 is via a (not shown) rotatable connecting device connected to the first drive chain 154, so that he without reversing the direction of rotation of the drive shaft 166 along the upper beam 82 can be pulled back and forth. The shaft 166 is via a friction clutch 170 connected to the motor 132, so that this can optionally be the winding carriage # s for the inner layer the winding carriage for the fiber strands or both winding carriages can drive together.

The winding carriage 152 for the base strands is in the longitudinal direction the machine can be moved on two horizontal rails 172, 174, which in mutual Arranged parallel spacing one above the other and by means of a series of struts 176 are attached to the top and bottom of the upper bracket 82, respectively. The winding slide 152 has a pair of mutually parallel spaced, C-shaped frame members 178, which grip over the upper and under the lower rails 172 and 174, respectively. At the frame members 178 is a resin trough containing the resin to be applied to the mandrel 180 suspended by means of two hanging brackets 180.

A vertically arranged perforated rail 182 is attached to support arms 184, which protrudes attached to the frame parts 178 on the left side of the machine are. The fiber strands 185 to be applied to the mandrel are caused by the rotation of the mandrel through openings 187 the perforated rail 182, down through the resin trough 180 and pulled over a guide bracket 188, which above the respectively located at the station 58A mandrel. Because the movements of the winding carriage and the rotation of the mandrel located at station 58t on each other are matched, a band formed from the fiber strands along a uniform Helical line wound on the mandrel so that an evenly reinforced pipe wall arises.

Extends below the mandrel which is indigenous to the application station 58A a collecting trough 188 over the entire length of the mandrel. The trough 188 rests height-adjustable supports 1C> O and serves to remove excess dripping from the mandrel Collecting resin to keep manufacturing facilities clean and raw materials to save.

At the 5SF workstation, one pipe is removed from the one located there Mandrel removed, for this purpose the mandrel holder 76 on the tailstock side is removed from removed from the mandrel located at station 58, and by means of one on the right Side of the lower bracket 84 attached groove means 194 are grooves in the Pipe wall 33 formed. There is also one on the right side of the lower one Intermediate support 196 attached to the carrier 84 is raised into the position shown in FIG. 1, to support the mandrel with the pipe on it. Then a (not shown) gripping device placed around the pipe and with the means of the groove device 194 shaped grooves engaged. The gripping device then intervenes Push carriage 198, which runs along the lower beam in the direction of the tailstock side The end of the machine is pulled to push the pipe off the mandrel. The push slide carries a brush (not shown) for cleaning the mandrel and (not shown) Means for applying a release agent to the Mandrel. at the return movement of the slide to the end of the machine on the headstock side the mandrel located at the removal station 58F is thus cleaned and with a Treated release agent.

The thrust slide is by means of a with both ends to the Chain attached to the lower beam 84 along the ends of the carriage. The chain 200 runs over an end of the machine near the headstock side the lower support 84 arranged sprocket 202 and one at the tailstock-side end of the machine on the lower carrier, drivable by a drive 206 Sprocket 204. After removing a pipe from the mandrel, the tailstock-side The mandrel holder 76 is reattached, the intermediate support 196 is lowered and the The mandrel is cleaned and treated with a release agent Step is rotated to the application station 58A.

The machine described and the method according to the invention are for different combinations of inner layers.

Fiber strands and resins applicable. The inner layer can be made of inorganic Fibers, such as glass or asbestos fibers, made from animal fibers, such as wool, from vegetable fibers Fibers, such as cotton, or synthetic fibers, such as nylon, rayon, dacron, Orlon, polyesters, polyolefins and the like. More are formed.

The fiber strands used can consist of continuous fibers directed in the same direction or threads be formed, for example from inorganic fibers, such as glass or Asbestos fibers, made from animal fibers such as wool, from vegetable fibers such as cotton, or made of synthetic fibers such as Naylon, Rayon, Dacron, Orlon etc.

As a resin for the manufacture of the pipes and for traversing the fiber material can do the most diverse with the respective Compatible fiber material thermosetting or thermoplastic resins can be used. So are suitable for the use in the context of the invention a thermosetting resin such as epoxy resin, Polyester, melamine-formaldehyde, urea-fortnaldehyde or the like. Or a thermoplastic Resin such as polyvinyl chloride, polyvinylidene chloride or the like containing binders.

The machine has facilities for controlling the temperature of the resin applied to the surface of the mandrels by passing a Fluid through the mandrels. The temperature of the through the individual mandrels fluid passed through depends on the work station at which the thorns are.

At the application station 58a is a fluid through the mandrel passed through, the temperature of which is below the solidification temperature of the resin to reduce the solidification of the resin before the intended amounts are applied to resin and fiber strands on the mandrel.

The solidification or hardening of the resin applied to a mandrel is initiated by being located at the first curing station 58B A fluid is passed through the mandrel, the temperature of which is above the curing temperature of the resin. Such a heat transfer medium is also provided by the at stations 58C, 58D and 58E located mandrels passed therethrough. Through the at the acceptance station 58F, coolant is passed through it so that the removed Pipe can then be safely transported by hand. To the number of temperature control devices to keep it as low as possible is ensured by the at the removal station 58F and at the Application station 58A located mandrels preferably passed the same coolant.

One shown in FIGS. 11 and 12 for those in FIGS. 1 to 4 shown Machine more usable, a flow path for a fluid for temperature control The mandrel 34 having a tubular jacket 208 with an annular flange 210 at the headstock side and a head part 211 at the tailstock side end. The headboard has a rounded end piece 213 for easier insertion into the holder 76. The Flange 210 has a number of screw holes 212 along its circumference for the Attachment to the headstock-side bracket 72. A step 214 on the inner Edge of the flange 210 serves as a support for an inner flange 216, which is penetrated by a funnel-shaped central opening 218. This represents one Flow outlet of the mandrel. Four equidistant from the central axis of the inner flange arranged at equal circumferential intervals, approximately kidney-shaped Openings 220 form flow inlets for fluid to enter the thorn. By attaching the mandrel to the holder on the headstock side 72, the inner flange 216 is pressed against an axial annular surface 222 of the step. The rounded peripheral surface 224 of the inner flange 216 is in abutment on the radially inwardly facing surface 225 of the step 214.

An annular ring surrounding central opening 218 of the inner flange Extension 226 protrudes into shell 208. On the inside of the extension 226, a tube 228 arranged coaxially within the shell 208 is attached. This is surrounded coaxially by an outer tube 232. The inner tube 228 represents one Outlet channel 235 for the exit of the fluid for temperature control from the mandrel. Between the outer tube 232 and the jacket 208 of the mandrel an annular inlet channel 240, which with the kidney-shaped opening gen 220 of the inner flange 216 is in fluid communication with the outer at certain intervals Ribs 242 attached to circumference 244 of outer tube 228 hold the inner and outer outer Tube koa '# ial firmly within the jacket 208. The ribs are sliding inside of the jacket 208 out to a different thermal expansion of the tubes and the Enable coat.

Spaced wire windings 248 hold the inner one and the outer tube 232 and 228, respectively, in a coaxial arrangement. To this end you can sockets 250 made of polytetrafluoroethylene, for example, are used, which are firmly bonded through retaining rings 251 secured to the outside 252 of the inner tube 228 are. An annular isolation chamber formed between the two tubes 228 and 232 236 is closed at the tailstock end by a # plug 254 so that the fluid used to control temperature cannot penetrate. The chamber prevents an exchange of arms between the one fed into the mandrel and the one taken out the fluid flowing off the mandrel and is for this purpose with an insulating Fabric, for example filled with air or a foam.

In operation, a fluid is used for temperature control the kidney-shaped inlets 220 are introduced into the mandrel 34. The fluid flows along inlet channel 240 between jacket 208 and the outer tube 232. There is a direct heat exchange between the jacket and the fluid instead of controlling the temperature of the surface of the mandrel. The fluid used dsnn flows through the outlet channel 235 within the inner tube 228 and the outlet port 218 of the inner flange 216 back through.

The exit of the fluid at the tailstock-side end of the mandrel is prevented by a cylindrical plug 256. A shift in the plug 256 in the direction of the headstock-side end of the mandrel is through a themselves Prevents short pipe section 258 from being extended to this end. ' The pipe section 258 is a certain distance from the jacket 208 of the mandrel coaxial within the same arranged and with the end opposite the stopper on a retaining ring 260 attached, which has a sealing ring resting against the inside 246 of the jacket 262 holds on. An axial extension 264 of the head part protruding into the jacket 211 supports the retaining ring 260 in the axial direction. The head part 211 is by means of a Adhesive and a rivet 266 attached to the shell 208. The sealing ring 262 is therefore necessary because the diameter of the plug 256 is smaller than the inner diameter of the coat. Due to such a loose fit, there is the occurrence of tension between the plug and the jacket avoided during the rotation of the mandrel. Without the sealing ring the fluid used for temperature control would therefore be on the tailstock side Exit the end of the mandrel.

Between the inner and outer flanges 216 and 210 on the headstock side End of the mandrel and these corresponding flanges 316, 318 of the headstock-side Mandrel.

bracket 72 are an outer and an inner sealing ring 268 resp. 270 (Fig. 7). The inner sealing ring 270 is located around the funnel-shaped Opening 218 around in contact with the inner flange 216., # around the separated from the fluid exiting the mandrel. The outer one Sealing ring 268 is in contact with the end of the headstock side Machine facing side of the outer flange 210 to the exit of the mandrel to prevent fluid flowing into the open air.

Since the mandrel is only supported at its ends, both the coat hang 208 as well as the inner and outer tubes. Thanks to the flexibility of the interior Sealing ring 270 and the spherical peripheral surface 224 of the inner Flange 216 the jacket and the pipes can sag and become independent of one another move relative to each other, the sealing ring is compressed and the crowned Peripheral surface 224 can slide in step 214 of the outer flange. Because the jacket and tubes move relative to each other as the mandrel rotates are stresses and damage to the inner tubes caused by them of the mandrel avoided.

The fluids for temperature control are oil, water, steam, Hot and / or cold air can be used. However, water is corrosive, and steam is used high temperatures can only be achieved at high pressures, so that difficulties arise with regard to result in the seal. Air is insufficient for effective heat transfer Heat capacity. The preferred fluid for the temperature control is therefore a petroleum product use, for example one under the name Mobiltherm (R) heat exchange oil sold by Mobil Oil.

This is an aromatic 01 t. which thus Resistant to thermal decay, even with persistent high temperature loads is. The oil has a high specific heat and under the typical operating conditions high thermal conductivity. When using oil as a heat transfer medium is one Corrosion of the facilities, as occurs in the case of water, is excluded, the heat transfer is more efficient than using air, and there are lower pressures required than when using steam.

The jacket is preferably made of a material that conducts heat well, such as steel, so that there is effective heat exchange with the surface of the mandrel.

The embodiment of the mandrel shown in Figures 11 and 12 has many advantages. There is only a slight difference between the inflowing and the outflowing fluid Heat exchange takes place, a cold and a hot fluid remain sharply separated from each other when the mandrel temperature is changed. Another The advantage of the isolation chamber is that the mandrel through the respective fluid is evenly cooled or heated because the chamber exchanges heat between the inflowing and the returning fluid prevented.

Another advantage of the mandrel shown in FIGS. 11 and 12 results from the fact that both the flow inlet and the flow outlet on the headstock side End of the mandrel are arranged. When removing the tailstock-side mandrel holder 76 and removal of the finished tube at removal station 58F this occurs for temperature control used fluid does not come out of the mandrel so that it does not contaminate the tube can be.

When using oil for temperature control, this is one A significant advantage, as contamination of the pipes with oil will later result in a material bond Connection between the pipes made considerably more difficult.

The mandrel holder 76 shown in FIGS. 9 and 10 on the tailstock side has a cylindrical, horizontally arranged bush 602, which by means of the above mentioned angle bracket 76 is attached to the tailstock-side support spider 62. The angular oil support has two triangular side walls arranged at a mutual distance 604, each one parallel to the longitudinal axis of the socket and one perpendicular to have running edge 606 or 608.

At the edges 608 perpendicular to the axis of the bushing is a transverse wall 610 attached. The edge 612 of the transverse wall facing the socket is corresponding the circumferential shape of the socket rounded. On the transverse wall and those facing each other Two transverse strips 616 are welded to the sides of the side walls 614, between which a block 618 is fastened in the middle between the side walls.

The block 618 has a horizontal central hole 620 for the reception a retaining screw 180, which also passes through a hole 622 in a support arm 64 of the support spider 62 protrudes. On the support arm 64 of the spider 62 facing On the side 608, the angle bracket has two projections 626 for contact with the respective one Beam. The transverse wall 610 has bores at diametrically opposite corners 628 for the engagement of protruding (not shown) on the respective support arm 64 conical pins that hold the mandrel holder in the correct orientation. On the outside 530 of the one side wall 604 there is a holder, for example a locating socket 632, welded on for an eyebolt 634. The threaded socket is relative to the side wall arranged at an angle so that the eyebolt protrudes upright when the mandrel holder is 76 at the acceptance station 53? is grabbed by a hook 702 effortlessly can be (Fig. 4). The hook is used to hold the DormhalterunO when removing the same to be carried by the thorn.

The outer sleeve 602 includes a rotatable inner sleeve 636 which rotatable in a bearing and seal assembly 633 at each end of the outer sleeve is stored.

A centering device 640 enables the production of pipes of various types Diameter by means of the machine 10.

The centering device 640 contains a pipe section 642, which is shorter is than the outer socket 636. At the ends of the pipe section 642 there is one Socket 644 welded on, which has larger inside and outside diameters than the pipe section. In each of the two sockets 644 there is a socket 646 made of polytetrafluorethylene used. The inside diameter of the bushings 646 determines the diameter of the in the centering device insertable mandrel and thus the inner diameter of the this shaped pipe. Should be a mandrel with a smaller diameter as 11 and 12 are used, a centering device used whose sleeves have a smaller inner diameter. A thorn bigger Diameter can directly in a pair of intermediate sleeves 648 made of polytetrafluoroethylene Find admission. In the arrangement according to FIG. 10, the centering device 640 is included the two sleeves 644 held centered in the intermediate sleeves 648. For fixing the centering device in the inner bushing is provided by screws 650 which are inserted into bores 652 of the inner bushing and screwed into a corresponding bore 654 of the Grab the centering device.

The inner sleeve is in the rolling bearings 638 together with the mandrel rotatably mounted. The polytetrafluoroethylene bushings serve to prevent wear to avoid the mandrel in the area of the bracket and to remove the bracket facilitate.

The described mandrel holder on the tailstock side has many advantages. Since it is only attached to one arm of the support spider with a single screw, it can be easily and quickly removed from a mandrel. This increases the The machine's working speed, labor costs decrease, and the Production speed is not limited by removing the tubes. A Another advantage is the use of sockets made of polytetrafluoroethylene instead of lubricants to prevent wear on the mandrel. With lubricants namely, the mandrel and via this the tube formed thereon could be contaminated. Contamination of the pipes with lubricants would create a material bond later make the same considerably more difficult.

A device for supporting the tailstock sides removed from a mandrel The mandrel holder 76 can be designed in any desired manner. In the in Fig. 1, 2 and 4 shown The preferred embodiment is one with the eyebolt 634 engageable hook 702 via a vertebral limb 704 with a (not shown) Roller connected, which runs on a horizontal running rail 706 One end the running rail lies perpendicularly over one located at the removal station 58F Mandrel holder. The running rail 706 runs in an arc in the direction of the central axis the machine so that the mandrel holder for removing a pipe from the respective mandrel can be put aside. The running rail 706 is supported by three struts. First and second struts 708 and 710, respectively, are near the right end of the tailstock side Cross member 28 attached to its front or back.

These two vines carry the straight piece of the running rail. A third strut 712 has one end on the curved portion of the track and with the other welded to the outside of the second strut 710.

By means of this support device, the one unscrewed from the support bracket Mandrel holder can be easily handled by a single worker.

As can be seen in FIGS. 6 and 7, the mandrel holder on the headstock side 72 flow paths # 305, 307 for supply and return fluid for the temperature control of the mandrel. The mandrel holder 72 has a hollow shaft 308, which is rotatably mounted in a stationary bush 310. At the socket 310 is the flange 74 for fastening the mandrel holder 72 on the headstock side Support bracket 60 welded on.

One at both ends of the socket 310 between its inside and The bearing arrangement 312 arranged on the outside 314 of the hollow shaft enables the rotation of the hollow shaft around its axis relative to the stationary bushing 310.

At the end facing the tailstock, the dormial aging 72 has a Flange 302. This consists of one outer and one inner flange part 316 or 318, which is connected to the outer - b # w, the inner flange 210 and 216 of a mandrel 34 cooperate. The annular outer flange is on Welded to the end of the hollow shaft and has a number of the along its circumference Bores 212 in the outer flange 210 of the mandrel 34 corresponding holes 320 for the inclusion of screws for attaching a mandrel to the bracket. An outer one Edge 322 of inner flange 318 is secured by means of screws seated in bores 327 325 attached to a radially inner edge 324 of the outer flange. The inner flange has a circular central opening 326 for fluid returning from the mandrel. A ring 328 surrounding the opening 326 is over radially extending spokes 330 connected to the outer edge 322. Between the spokes 330 are three roughly kidney-shaped Openings 332 substantially equidistant from the longitudinal axis # of the mandrel support remotely shaped. The openings 332 form passages for the material supplied to the mandrel 34 Fluid.

The outer one that prevents the fluid from escaping into the open air Sealing ring 268 sits in an annular groove 336 in the surface facing the mandrel 338 of the outer flange 316 The mixing of the incoming with the flowing back Fluid preventing inner seal ring 270 is seated in an annular groove 340 in the surface 342 of the ring 328 facing the mandrel.

The ring 328 of the inner flange 318 has a hollow shaft 308 in protruding, annular extension 344. This carries a with the hollow shaft coaxial central tube 346, which to a rotatable connection coupling 400 on the headstock side The end of the mandrel holder.

A jacket 348 made of polytetrafluoroethylene surrounding the central tube 346 forms isolation therebetween along an annular flow path 304 around the inner tube around the mandrel flowing fluid and along a Flow path 305 within the center tube of fluid returning from the mandrel.

Between the jacket 348 of the central tube and the inside 349 of the Hollow shaft 308, an outer tube 350 is arranged, which at one end of the inner surface of the outer flange 316 and the other of one on the inner surface 349 of the hollow shaft attached ring 352 is held from phenolic resin. Tm difference to the central tube the outer tube does not extend as far as the rotatable connection coupling 400.

The ring 352 is coaxial with the jacket 348 of the central tube umaetaznden, thick-walled Hetallmuffe 354 held, which on the end of the outer tube 350 is welded on. The H.lffe 354 has an internal thread for doing a short pipe (not shown) that connects the socket 354 to the rotatable coupling 400 connects. A loosening of the screw connection by the rotation of the mandrel is through Grub screws 356 prevented.

The incoming fluid flows through for the temperature control the rotatable coupling 400 and then flows along the annular flow path 304 between the jacket 348 of the central tube and the sleeve 354 or the outer tube 350 and then enters the mandrel through passages 332 of the inner flange. The returning fluid flows through the central opening 326 of the inner F # at 318 and along the flow path 306 in the center tube to the rotatable coupling 400. The rotatable coupling is via a supply line 358 and a return line 360 connected to devices for the supply of the fluid.

The annular gap 362 between the outer tube 35 and the Hollow shaft 308 contains an insulating material, such as air. This is the hollow shaft and their storage against overheating by the flow through the annular flow path hot fluids protected.

Mandrels of various diameters can be connected to the mandrel holder. All that is required is that the flange of the various mandrels match those of the Connection flange of the mandrel holder complementary screw holes and passages having.

The six present in the machine of Fig. 1 to 4 mandrels and Mandrel mounts all have those described above by way of example Construction.

The arrangement described thus enables the supply and that of it separate recirculation of a fluid for controlling the temperature of a Thorn at one and the same end of the thorn. A convenient arrangement for the Supply and return of temperature control fluids is explained below with reference to FIG.

16 shows a coolant container 402, a heat carrier container 404 and one connecting the upper parts 407 and 408 of the two containers to one another Overflow line 406. If one of the containers is overfilled, the fluid Overflow via line 406 into the respective other container. On every container a level 409 is arranged for monitoring the degree of filling.

Furthermore, six work stations 58A to 58F can be seen in FIG. 16, each of which a rotatable connection coupling 400 is assigned. At every coupling 400 are two flexible ones Hoses 410, 411 for the supply line or Return line of the fluid connected.

With the ends facing away from the coupling 400, the hoses are on one distributor 500 described below. This has a first and a second, each circular distributor disk 502 or 504, the first disk is facing the tailstock-side end of the machine and with the hoses 410, 411 connected. As the mandrels move from one station to another, the first disc rotated around the axis of the support tube 38 around. On the second, the The end of the machine facing the headstock are one for each mandrel first and second lines 412 and

413 for the supply and return of the fluids connected. The second disc remains as the mandrels move from one station to another stand.

At the application station 58a, the surface temperature becomes the surface temperature of the mandrel located there by supplying the Sühluittels at a temperature below the solidification temperature the temperature of the resin is maintained. The same coolant also cools the at the acceptance station 58? located mandrel. The E ~ uhlmitte1 is at the bottom of the container 402 discharged via a line 414, flows through a filter 416 and arrives at a Pump 418 The coolant flows from pump 418 to a temperature meter 420 and a pressure gauge 422. Subsequently, part of the coolant overflows conduit 424 including flow meter 425, manifold 500, and the one rotatable coupling 400 into the mandrel located at the application station 58A 34 to prevent premature solidification of the resin applied to the mandrel. Another part of the coolant flows from the pump 418 via a line 426, the distributor 500 and another rotary coupling 400 in the at the take-off station 58F located mandrel. That consumed at application station 58A Coolant flows via the rotary coupling 400, the distributor 500 and a line 430 to an inlet 432 of the coolant tank 402 Das at the take-off station 58F Spent coolant flows through a return line 434 to a first three-way valve 436 and passes from this into the contribution 430 leading to the coolant container 402. The three-way slide is actuated by means of a device set to the temperature of the actuating device responding to the coolant flowing back from the take-off station 437.

There is a temperature indicator on the coolant return line 430 484 and a heat exchanger 438 are arranged.

The latter is used to keep the temperature of the coolant below the Maintain solidification temperature of the resin.

The supply and return devices for the heat transfer medium have one similar structure as the supply and return devices for the coolant. Of the Heat transfer medium flows from the lower part of the container 404 via a line 440 and a filter 442 to a pump 444 and from there via a temperature indicator 446 and a pressure indicator 448 to those located at curing stations 58B-58E Mandrels 34 for curing the resin applied thereon. The temperature of the heat carrier depends on the solidification temperature of the respective resin. Epoxy resins are solidified, for example, at temperatures of approx. 135 to approx. 165 ° C and above. On lines 450 and 451, respectively, leading to curing stations 58B and 58C Flow meter 454 arranged to monitor the heat transfer medium.

The one flowing back from the thorns at the individual curing stations Heat transfer medium arrives at an inlet 458 on via a collecting return line 456 upper part of the container 404. On the return line 456 is a from a thermostat 462 or the like. Controlled, for example electrical heating device 460 arranged, which the temperature of the heat transfer medium above the solidification temperature of the resin.

Just as in the return line of the removal station 58F is in the Return line of the first curing station 58B, a three-way valve 464 is arranged. This can be controlled via a thermostat 465 or the like, which is based on the temperature of the fluid flowing back from the first curing station 58B is responsive.

The two slides 436 and 464 contribute significantly to the maintenance a favorable heat balance in the manufacture of pipes. They each kick in action after the mandrels move simultaneously from one workstation to the next have moved. For example, one moving from the application station 58S to the first curing station 585 the stimulating mandrel contains a certain amount of the previously added coolant. However, it would be uneconomical to return this coolant to the heat transfer container 404. Thermostat 465 is therefore set to flow back from station 58B Fluid via line 470 and line 430 to coolant reservoir 402 flees if there is a falls below a certain temperature. If the temperature exceeds the of the first curing station returning fluid the predetermined or set Value, the second slide 464 is actuated to force the fluid over the Collecting line 456 to be fed to the heat transfer container 404. This prevents that the heat transfer container after each movement of the mandrels from a work station to the next a certain amount of the cooling agent is supplied. The predetermined or set temperature is preferably about in the middle between the correct temperatures for the coolant and heat carrier tanks. For example, a heat transfer medium with a temperature is used to solidify the resin of approx. 150 Oc is used and is the temperature in the coolant tank, for example about 21 OC, the set temperature is preferably about in the middle between these two values, i.e. at approx. 85.5 ° C. approx.

According to the above, a mandrel contains after its transfer from the last curing station 58E to the removal station 58F a certain amount of the Heat transfer medium.

This heat transfer medium would be returned to the coolant tank 402 lead to unnecessary loading of the heat exchanger 438. The slide 436 is in the return line 434 of the removal station 58F controlling temperature sensor therefore set in such a way that the heat transfer medium still present via a line 474 the return collecting line 456 leading to the heat transfer container 404 flows. If the heat sensor 437 then responds to the by the appearance of the coolant in the return line of the removal station 58F caused a temperature drop, see above the spool 436 is actuated to divert the fluid through the return line 430 to supply the coolant tank 402. Reversing the return line of the fluid from the heat transfer tank to the coolant tank is preferably done at one between the temperature in the heat carrier tank and the temperature in the coolant tank approximately in the middle of the temperature.

The circuits for the coolant and the heat transfer medium are respectively provided with a relief valve 478.

This is arranged on the pressure side of the associated pump and when open give the return flow of the fluid to the respective container leading return manifold free. The relief valves step on everyone Transfer of the mandrels from one workstation to the next in action, since the both parts of the distributor in the intermediate positions as described below the mandrels are twisted against each other in such a way that the fluid does not lead to the Thorns can get. During the brief interruption of the flow paths at The relief valves prevent the mandrels from being transferred between the workstations thus overloading the pumps and their drives. If the carrying device the mandrel should stop in an intermediate position, remains via the relief valves the flow through the heater 460 is maintained so that no overheating the same occurs.

As you can see from the description above, the distributor plays 500 an essential role in the supply of those used for temperature control Fluid from the containers to the mandrels as they move intermittently around the axis of the support tube 38 from one work station to the next.

As can be seen in Figures 13 and 14, the manifold has two upright standing, circular disks, namely one of the tailstock-side end of the First disk 502 facing the machine and one end facing the headstock side second disk 504. The disks 502, 504 are aligned with center bores 509 enforced.

The first disk having a larger diameter than the second 502 has six screw holes 506 around its circumference for attaching the manifold on the outside 510 of the upright disk 52 on the headstock side End of the support tube 38. The bearing for the support tube is also located on this disk attached.

With each rotation of the mandrel rotates around the axis of the support tube thus the first disk 502 rotates at an essentially equal angle around its Axis.

The two disks 502, 504 are each of twelve passages 512 interspersed. A radially outer arrangement of six first passages 512A is used the supply line for the fluid to the work stations and a radially inner one Group of six passages 512B serve to return the fluids from the Workstations.

There are therefore two passages in each pane for each work station present, namely a passage 512A of the first group and a passage 512B of the second group.

The passages are at the same radial distance within the two groups arranged from the axis of the distributor.

For the connection of lines, the passages have at least one part of its length has an internal thread.

The first disk has on the side 514 facing the headstock 502 has a circular recess 416, the diameter of which is that of the second disk 504 corresponds. The second disc is fitted into the recess and through a fastened by means of countersunk screws 522 on its side 520 facing the tailstock Sealing washer 518 held at a certain distance from the first washer 502.

The sealing washer has twelve aligned with passages 512 Passages 524 and a central opening aligned with the central bore 509 of the disks 526.

The sealing washer fulfills several functions. Once prevented they allow the fluid to exit along the gap between the two disks It also interrupts the flow of incoming and outgoing fluids, as long as the passages of the disks are not aligned with one another, as in the case of the Rotation of the first disc during the transfer of the mandrels between the work stations the case is. Furthermore, the Sealing washer the twist of the two distributor disks relative to each other. A preferred material for the Sealing washers are poly (amide-imide) resins, as they are known under the name Torlon and Vespel are manufactured by Amoco Chemicals and DuPont, respectively.

These resins have a very low coefficient of friction, which the rotation of the disks relative to each other allows, and an extremely high Resistance to plastic deformation and wear, which is particularly important is. as long as the passages are not aligned with each other. The Harz also has one low coefficient of thermal expansion, so that a different thermal expansion between the sealing washer and the metal distributor washers does not become one leakage in particular of the heat transfer medium can lead. Other suitable materials for the sealing washer are polytetrafluoroethylene and aluminum-bronze alloys.

Another safety factor is the escape of the means of electricity A sealing ring 560 is provided through the distributor disks. This is between the inner wall 552 of the recess 516 of the first disc 502 and one in the circumference the second disc 504 formed step 564 arranged.

The two disks 502, 504 of the distributor 500 are solid Threaded pin 528 held together. The pin sits in the central bores 509 of the two discs and has one end along the edge 530 of the central bore 509 welded to the first disk 502.

The other threaded end of the pin sticks out the second disc out. Between the pin and the second disc a radial Raibun # slager 532 is arranged. One on the free end of the tenon attached axial roller bearing 534 is with the interposition of a retaining ring 535 from one to the thread of the Screwed nut 536 pressurized to the outside of the second disc. By means of the mother 536, the pressure load on the sealing washer 518 can be adjusted.

The headstock-side end of the pin 528 is of a means Screws 538 attached to the second disc cover 537 covered. The lid serves the purpose of collecting fluid escaping along the circumference of the pin. A groove 550 in the edge 552 of the cover which is in contact with the second disc contains a sealing ring 554, which the exit of the fluid from the lid prevented. As mentioned above, this is used for temperature control Fluid preferably a petroleum derivative, which may be used as a lubricant can be effective. As a result, there is a certain amount of lubrication between the stationary ones first disc with the pin and the rotatable disc by the fluid guaranteed itself. For venting the cover when the lubricant enters or fluid, a pipe nipple 556 is present on the cover.

The embodiment of the distributor shown in FIGS. 13 and 14 # g # can be used in can be modified in various ways. Thus, the sealing washer 518 can for example by means of Instead of being fastened to the second disk by means of the screws 522, the drivers. The sealing washer can also be attached to the first instead of to the second washer will. The two disks also do not need the same number of passages to have. For example, the machine can be operated without the coolant is passed through the mandrel located there at the removal station. In In this case, the second disk does not need any passages for the removal station so it would have only ten passages, while the first disc had twelve Would have passages.

With different numbers of passages, the the Seal arrangement preventing the fluid from escaping between the two discs be attached to the disc having the larger number of passages, so that at the passages that are not aligned with the passages of the other pane no fluid can escape.

Instead of a flat sealing and bearing washer, separate Bearings and sealing devices 580 are used as shown in Fig. 15 The two distributor disks are not in here by a sealing disk 518 kept mutual distance, but by means of a second axial roller bearing 582. This sits in an annular recess 584 surrounding the pin 528 second disc. When assembling the distributor, the mother 535 is attracted, until the second thrust bearing 582 rests against the first disk. To prevent the Escape of the fluid in the space 586 between the two T.ferteilerscheiben a floating seal is provided for each of the z # - 'twelve passages, 0-588. The seals 588 each sit in an enlargement 590 of the respective passage of the second disk and are through; each four through intermediate rings 594 from each other separate shaft rings 592 loaded in the axial direction in contact with the first disc. Each seal 588 is surrounded by a sealing ring 596 which is in an annular groove 597 of the second disc is seated.

Since the wave rings only exert a relatively small force on the floating Exercise seals 588, the two distributor disks can be relatively easily twist to each other. Also, the floating seals can have bumps as well compensate for a slight tilting of the panes, so that the temperature control The fluid used cannot escape.

The mandrels can be made to rotate about their axes depending on one another. The possibility to set the mandrels in rotation at the individual work stations, is extremely important. At the application station 58A a mandrel for winding the Inner layer and the resin-soaked fiber strands are set in rotation.

At the curing stations 58B through 58E, the mandrels are preferred also set in rotation so that the resin cannot drip off, and on the removal station 58F the mandrel must be set in rotation so that it is in the pipe wall the annular grooves for the engagement of the ones used to push the pipe off the mandrel Gripping device can be formed.

A rotary drive shown in Fig. 5 for a mandrel has a Hydraulic motor 67, which at the tailstock-side end 702 of a cylindrical Housing 704 is attached. The housing 704 is on the tailstock-side surface 706 of the spindle shaft-side support spider 60 welded to the support tube 38. The hydraulic motor is of a pump (not shown) with a hydraulic one Liquid fed. As can be seen in Fig. 8, the flows through a feed line Hydraulic fluid supplied to 707 a rotatable coupling 708, one concentric tube arranged in the hollow support shaft 40 at the tailstock end of the machine 710, a line connected to this in flow and leading out of the shaft 40 711 and lines (not shown) running along the support tube 38. the Hydraulic fluid flowing back to the pump flows through the support tube running (not shown) lines, a flow-connected therewith, in the conduit 713 leading into hollow shaft 40, an annular ring-shaped surrounding tube 710 Passage V12 and the rotatable coupling 708, on which a return line 715 connected.

As can be seen in Fig. 5, the hydraulic motor is via one in the housing 704 housed coupling 720 with drive transmission with a horizontal shaft 722 connected, which one of six cylindrical bores 724 in the support bracket 60 interspersed. Near its end facing the tailstock is the shaft 722 of one first bearing 726 held, which on the side facing the headstock of the Support bracket 60 is attached, and at the other end of a second bearing 728, which by means of a holder 730 on the side 510 of the end disk facing the headstock 52 of the support tube 38 is attached. Near the end facing the headstock carries the shaft 722 has a vertically arranged, circular clutch disc 734.

Each hydraulic motor drives an endless roller chain 73Z, which Via a chain wheel 739 on the drive shaft 722 and another chain wheel 738 runs on the hollow shaft 308 of the respective mandrel holder 72, whereby the hollow shaft and the attached mandrel can be set in rotation. The 736 chain is also running via a Xet-tenspanner 737, which on the side facing the headstock of the respective arm 64 of the support bracket 60 is attached. Except for the duration of three process steps, each mandrel is continuously powered by its own hydraulic motor driven.

The one exception occurs at the receiving station 58F at which the mandrel is not rotated while the tube is being removed.

A second exception occurs at the application station 58A at which the mandrel during the fastening of the inner ends of the inner layer and / or the fiber strands : 3till standstill.

The third exception also occurs at job station 58A. When wrapping the mandrel with the inner layer and the fiber strands it depends on the fact that the longitudinal movements of the winding carriage 98 or 152 are precisely matched to the rotation of the mandrel. For this reason, the Drive shaft 722 of the mandrel at application station 58A from the same drive 134 set in rotation, which is also used to move the winding carriage along the Mandrel is used.

All six mandrels and all of the supporting equipment are in operation the same, including the support tube, the spindle and tailstock-side support spiders and the mandrel holders arranged on these, stepwise by 600 to the Axis of the support tube turned around further.

This is done by means of a device described below. After a mandrel has been transferred from the take-off station 582 to the application station 58A, the end piece 732 of the shaft 722 associated with the mandrel penetrates a bore 733 of a clutch disc 742 driven by the main drive 132. The end 732 the drive shaft 722 is slightly tapered so that it can easily penetrate into the bore 733 can. As a result, the support device for the mandrels is in a fixed position relative held on to the main drive. The one at the end of the shaft of the main drive 132 Clutch disc 742 has a friction lining 746 which rests on the Drive shaft 722 of the mandrel seated clutch disc 734 comes. This will now the shaft 722 is set in rotation by the main drive 132 and, in turn, overdrives the roller chain 736 connects the hollow shaft 308 and the mandrel attached to it.

Because the clutch disc 742 rests on the clutch disc 734 a valve 754 is actuated, which is the hydraulic motor of the at the application station 58A guides hydraulic fluid flowing into the mandrel around the motor, so that the mandrel is set in rotation solely by the main drive. When creating the clutch disc 734 presses the clutch disc 742 against it a bolt 764 at the end of a horizontally arranged push rod 756, which through a bore in the end plate 52 of the support tube 38 is passed and the actuation of the valve is used. The push rod is welded in a to the end plate 52 Sleeve 758 out.

Before actuating the device for further turning the mandrels from one workstation to another is the drive transmission between the main drive and the drive shaft 722 of the mandrel at the application station is disengaged. This also releases the push rod 756 and via this the valve 754, so that now the hydraulic motor 67 takes over the drive of the mandrel again.

The mandrel with the resin applied to its surface is so set in rotation about its own axis before reaching the first curing station. This is extremely important because there is no dripping of the resin from the stall A mandrel is avoided, so that a tube with an even wall thickness is created.

While cleaning a thorn and treating it with one Release agent at the removal station 58 must run the mandrel at a considerably higher speed are driven than at the other stations, so that all parts of the surface of the mandrel must be cleaned thoroughly and coated with the release agent. To this Purpose is a (not shown) valve, by actuating the speed of the motor and thus that of the mandrel located at the removal station can.

A device 59 for continuous turning of the six mandrels in the counter-clockwise direction from one to the next work station is shown in FIG. You w # Is a cylinder 802, which by means of a support 803 on the inside 80! S of the left tailstock support 114 hinged and inclined upwards from the support sticks out.

A piston rod 806 of the cylinder 802 is on a pivot arm 810 a coupling disc 812 on which the end of the support tube 38 on the tailstock side is supported Hollow shaft 40 articulated.

To continue turning the mandrels from one workstation to the next, it is necessary actuates a control device which initiates the following steps one after the other: The clutch 812 is engaged, and the clutch disc 734 on the spindle stock the machine is released from the clutch disc 742 of the main drive 134, so that the support device of the mandrels can be rotated further.

The rod 805 is shown in dashed lines in FIG. 4 Extended position, whereby the support devices of the mandrels together with these can be rotated further by 600 around the axis of the support tube 38.

Eventually the clutch disc 742 becomes the main drive again with the clutch disc 734 of the drive shaft 722 of the now at the application station located mandrel engaged, the clutch 812 released and the piston rod moved in again.

These steps can be controlled automatically - or: one after the other by be triggered by an operator.

The invention is not preferred to those described above Embodiments limited, but allows a wide variety of modifications the same. A machine of the type described does not necessarily have to be identical To have numbers of thorns and work stations, it can also be more or fewer mandrels than workstations.

Instead of the six mandrels or workstations on one of which the Application of the resin, on another the acceptance of the finished pipes and on four Further of the same the hardening of the resin takes place, can also be more or less Mandrels or workstations in a ratio other than that described for 4: 1: 1. In any case, however, there is an application station, a curing station and an acceptance station necessary.

The number of curing stations in relation to the number of order and take-off stations is largely dependent on the for the solidification of the resin required time compared to that for applying the inner layer, the resin uno the fiber strands onto a mandrel and / or the one for removing the one for removing one finished tube ~ from a mandrel b # time required. Depending on the for solidification the time required of the resin can therefore be used for an application station and a removal station there may also be more or fewer fixed hardening stations.

Claims (61)

P a t e n t a n s p r ü c h e 1. Procedure lur like fortlau, "ende Production of EUnBnBpipes from a hardenable resin on a water right arranged, rotating mandrel, characterized in that several horizontally arranged mandrels repeated and at the same time between several essentially at the same radial distance from a horizontal central axis and substantially equidistant around these workstations are moved, with at least one application station for applying the resin a mandrel, at least one curing station for at least partially curing the resin applied to the mandrel and at least one removal station for removal an at least partially cured tube is present from the mandrel, and that after each movement of the mandrels a non-solidified resin is applied to each one A mandrel located in an application station is applied, at the same time the non-solidified Resin on the surface each at a curing station located Mandrel at least partially cured and at the same time at least partially cured tube removed from each mandrel located at a removal station will. 2. The method according to claim 1, characterized in that g e k e n n -z e i c h n e t, that each mandrel located at an application station to a curing station and each mandrel moved to a removal station is moved from a curing station to the latter will 3. The method according to claim 1, characterized in that g e k e n n -z e i c h n e t that for Each work station is a mandrel and that the mandrels each around one the Circumferential distance between the work stations essentially corresponding angle be advanced around the central axis. 4. The method according to claim 3, characterized in that g e k e n n -z e i c h n e t, that an application station 1, a removal station and at least two curing stations available. 5. The method according to claim 1, characterized in that g e k e n n -z e i c h n e t, that an application station, a removal station and at least two curing stations available. 6. The method according to claim 1, characterized in that g e k e n n -z e i c h n e t, that each mandrel is an elongated one that is open at one end and closed at the other end cylindrical shell with a flow inlet and a flow outlet at the open End and a flow path formed within the shell for a fluid for controlling the temperature, with one between the closed end and the outlet channel extending to the flow inlet and an outlet channel between it and the inner surface of the jacket extending between the flow inlet and the closed end Inlet duct, and that the surface temperature at least one The mandrel is controlled by adding a fluid to the inlet channel via the flow inlet which is the temperature of the outer surface of the mandrel as it flows to the closed end by indirect heat transfer controls whereupon the fluid then from the closed end of the jacket along the outlet channel and through the flow outlet flows out of the mandrel. Method according to Claim 6, characterized in that the fluid which has flowed out of the flow outlet at least one mandrel is transferred to a heat exchanger area that the temperature of the fluid is set in the heat exchanger area and that the fluid for the Feed to the flow inlet of the mandrel is removed from the heat exhaust area 8th. Method according to -fi '# r # ruch 1, thereby g e k e n n -z e i c h n e t that the temperature of the resin during the application of the same to the mandrel under the solidification temperature of the resin is maintained by a fluid with a below the Solidification temperature of the resin it lying temperature- from a coolant tank passed along a flow path through the mandrel and the used Fluid is returned from the mandrel za coolant tank that solidification of the resin applied to the mandrel after evn the mandrel from an application station is initiated to a curing station by supplying the coolant to the mandrel interrupted and a fluid with a temperature above the solidification temperature of the resin lying temperature along the same flow path as before that Coolant is passed through the mandrel and that the flow of the out of the Mandrel flowing out) fluid from the coolant tank to a heat transfer tank is diverted, about a rise in temperature from the mandrel the end flowing fluid the presence of the warm fluid or heat carrier indicates. 9. The method according to claim 1, characterized in that g e k e n n -z e i c h n e t, that the temperature of the resin applied to the surface of the mandrel to solidify the same held at a temperature lying above its solidification temperature is by using a heat transfer medium with a temperature above the solidification temperature of the resin lying temperature from a heat transfer container along a flow path passed through the mandrel and the used heat transfer medium after flowing through of the mandrel is returned to the heat transfer container that the supply of the heat transfer medium interrupted to the mandrel before its transfer to a removal station and a Coolant with a temperature below the solidification temperature of the resin the heat transfer medium passed through the mandrel along the same flow path as before is, and that the emerging from the mandrel flow from the heat transfer container to a Coolant tank is diverted when a temperature drop is exiting from the mandrel Flow indicates the presence of the coolant. 10. The method according to claim 1, characterized in that g e k e n n -z e i c h n e t that a heat transfer medium with each mandrel located at a curing station a temperature higher than the solidification temperature of the resin for heating and passing curing the resin on the surface of the mandrel. 11. The method according to claim 1, characterized in that g e k e n n -z e i c h n e t that through each mandrel located at a removal station with a coolant a temperature below the solidification temperature of the resin will. 12. The method according to claim 1, characterized in that g e k e n n -z e i c h n e t that through each mandrel located at an application station with a coolant a temperature below the solidification temperature of the resin will. 13.4 The method as claimed in claim 1, characterized in that it is e k e n n -z e i c h n e t that each mandrel located at a curing station around its own axis is set in rotation. 14. The method according to claim 1, characterized in that g e k e n n -z e i c h n e t that each mandrel located at an application station about its own longitudinal axis is rotated around. 15. Machine for the continuous production of plastic pipes a solidifiable resin on a rotating, horizontally arranged mandrel g e k e n n -z e i c h n e t by several essentially at the same radial distance to a horizontal central axis and essentially at the same circumferential distances work stations (58A to 58F) arranged around them, by at least three arranged essentially at the same radial distance from the central axis, respectively mandrels (34) rotatable about their longitudinal axis, by at least one application station (58A) including means (84, 152) for applying unconsolidated resin to the surface of the mandrel, by at least one curing station (5BB to 58E) with devices for at least partially solidifying the resin on the surface of the mandrel at least one removal station (58F) for removing an at least partially cured Tube from the mandrel and through means (59) for intermittent twisting the mandrel around the central axis by one in the # ,; #normal to the scope of #and corresponding to the workstations Angle so that each thorn is at a workstation before and after each rotation 16. Machine according to claim 15, thereby g e k e n n -z e i c h n e t that with the simultaneous rotation of the mandrels (34) each mandrel located at an application station (58A) to a curing station (58B to 58E) and each mandrel moved to a take-off station (58F) from a curing station is movable to this. 17. Machine according to claim 15, characterized in that it is e k e n n -z e i c h n e t that an application station (58A) with devices (84, 152) for applying unconsolidated resin on the surface of a mandrel (34), a removal station (58F) having means for removing a tube from a mandrel and at least two Curing stations (58B to 58E) with devices for Yerlesbigen the resin the surface of a mandrel. 18. Machine according to claim 17, characterized in that it is e k e n n -z e i c h n e t that the number of mandrels (34) is equal to that of the work stations (58) 19. Machine according to claim 15, characterized in that the number of mandrels (34) is the same as that of the workstations (58). 20. Machine according to claim 15, characterized in that it is e k e n n -z e i c h n e t that each mandrel (34) has a closed at one end and open at the other end, elongated tubular jacket (208), a flow inlet (220) and a Flow outlet (218) at the open end of the shell and one inside the shell extending flow path for a fluid used for temperature control has, with an inside of the cylindri's jacket from the closed end to the flow outlet leading outlet channel (235), and an between the outlet channel and the inner surface of the shell from the flow inlet to the closed End leading inlet duct (240), and that the machine further means (402 to 465, 500) for supplying and discharging a fluid for temperature control to and from each mandrel, this having the inlet channel from the flow inlet Fluid flowing through to the closed end of the jacket is the surface temperature of the mandrel controls through indirect heat transfer and from the closed end of the Jacket flows back along the outlet channel and through the flow outlet. 21. Machine according to claim 20, furthermore g e k e n n -z e i c h n e t through a heat exchange pressure area (438, 460) for adjusting the temperature of the used Fluid after flowing through a mandrel (34) through a device (500) for transferring the fluid from the flow outlet of each mandrel (34) to the Heat exchanger area and by means (500) for transferring the fluid from the heat exchanger area to the flow inlet of each mandrel. 22. Machine according to claim 15, g e k e n n z e i c h -n e t through Means (404, 440 to 450) for passing a heat carrier with a temperature above the solidification temperature of the resin by everyone a curing station (58B to 58E) located mandrel (34) for solidifying the resin on its surface. 23. Machine according to claim 15, g e k e n n n z e i c h -n e t through Means (402, 414 to 425) for passing a coolant with a below the solidification temperature of the resin by everyone a mandrel (34) located at an application station (58A) 24. Machine according to Claim 15, g e k e n n n z e i c h -n e t by means (402, 414 to 426) for passing a coolant at a temperature below the solidification temperature of the resin by each one located at a sewing station (58F) Mandrel (34). 25. Machine according to claim 15, g e k e n n n z e i c h -n e t through Means (67) for the rotary drive of each mandrel (34) about its longitudinal axis 26th Machine according to claim 15, g e k e n n z e i c h -n e t by means (500) for supplying fluid to each mandrel (34), having a first disc (502), a device (60) for rotating the first disk together with the Thorns around the horizontal central axis in each case around one of the thorns essentially same angle of rotation, one of the first complementary, fixed second disc (504), at least one passage (512) in each of the first and second discs for each mandrel, the passages of the two associated with the individual mandrels Align panes with one another when the first pane is at a standstill, devices (412) for the supply of a fluid to at least one passage for each each mandrel in the second disc so that the fluid is the first disc through the passage which is in line with the second disc in each case, devices (410) for supplying the fluid from in each case at least one passage of the second disc to each mandrel, and with surrounding the aligned passages Sealing means (518) for preventing leakage of fluid between the facing surfaces of the disks through. 27. Machine for producing plastic pipes on a mandrel, g e k e nnn z i n e t by one used for forming one tube at a time Mandrel (34) with an elongated, tubular jacket (208), which is closed at one end and a flow inlet at the other end (220) and a flow outlet (218) through one extending through the mandrel Flow path for a fluid used to control temperature, with one inside the jacket leading from the closed end to the flow outlet Auslaßkanai (235) and one between this and the shell of the flow inlet inlet duct (240) leading to the closed end and through means (402 to 500) for supplying a temperature control fluid to the Inlet channel of the mandrel for the control of its surface temperature by indirect Heat transfer in the flow of the fluid along the inlet channel, the fluid subsequently from the inlet channel into the outlet channel and along flows out of this and through the flow outlet from the mandrel. 28. The machine according to claim 27, characterized in that it is n -z e i c h n e t that the outlet channel (235) -tube-shaped and coaxially within the tubular jacket (208) is arranged. 29. Machine according to claim 27, furthermore g e k e n n -z e i c h n e t by knitting (438, 460) to adjust the temperature of the used fluid, by means (430, 456) for transferring the used fluid from the Flow outlet of the mandrel (34) to a heat exchange area and through facilities (402 to 454) for transferring the fluid from the heat exchanger area to the flow inlet, 30. Machine according to claim 27, characterized in that the Sbrömunf, smittel 01 is. 31. Machine according to claim 27, characterized in that it is e k e n n -z e i c h n e t that a heat exchange between the Ül) r the flow inlet (220) inflowing and the fluid flowing out via the flow outlet (218) by a arranged between the inlet channel (240) and the outlet channel (235), an insulating space (252) filled with an insulating material is prevented. 32. Machine according to claim 31, characterized in that it is n -z e i c h n e t that the insulating material is air. 33. Machine for the production of plastic pipes, g e k e n n 3 e ì C h n e t with a mandrel (34) used to shape one tube at a time an elongated tubular jacket (208) which is closed at one end and at the other end a flow inlet (220) and a flow outlet (218) has, through a flow path extending through the mandrel for a control the ~ r temperature usable fluid, with one inside the jacket of the closed end leading to the flow outlet outlet channel (235) and an between this and the jacket leading from the flow inlet to the closed end inlet channel (240), by an annular, arranged between the inlet channel and the outlet channel, Isolation chamber (252) containing air as an insulating material and by means (402 to 500) for supplying a fluid used for temperature control via the flow inlet to the inlet duct for control of the surface temperature of the mandrel by indirect heat transfer during the flow of the fluid along the inlet channel, the fluid from the inlet channel via the outlet channel and the flow outlet flows out of the mandrel and a heat exchange between the fluid flowing along the inlet channel and that along the outlet channel flowing, used fluid prevented by the insulating material is. 34. Machine according to claim 33, g e k e n n n z e i c h -n e t through Means (438, 460) for adjusting the temperature of the used fluid, by means (430, 456) for transferring the used fluid from the Flow outlet of the mandrel to a heat exchange area and through facilities (414 to 454) for transferring the fluid from the heat exchanger area to the flow inlet of the thorn. 35. The machine according to claim 33, characterized in that it is n -z e i c h n e t that the fluid is oil. 36. Machine according to claim 33, g e k e n n n z e i c h -n e t through Means (84 ', 152) for applying a solidifiable resin to the surface of the mandrel (34), and in that the temperature of the fluid to solidify of the resin above the solidification temperature of the resin on the surface of the mandrel lies. 37. A method for producing plastic pipes, in which a solidifiable, liquid resin is applied to the surface of a mandrel, by the fact that one has an elongated, tubular Sheath having a mandrel used, which one closed end and at the other End has a flow inlet and a flow outlet, and one through the Flow path through mandrel for a temperature control to use Fluid, with one leading from the closed end to the flow outlet Outlet channel within the tubular l'iantels and one between this and the Outlet channel from flow inlet to closed end inlet channel, daPJ control fluid is added to the inlet channel via the flow inlet the surface temperature of the mandrel through indirect heat exchange during the flow of the fluid along the inlet channel and that the Second hand Discharges fluid through the outlet channel and the flow outlet from the mandrel. 38. The method according to claim 37, characterized in that it is n -z e i c h n e t that the used fluid from the flow outlet of the mandrel to a heat exchange area is supplied that the temperature of the used fluid in the heat exchanger area is adjusted and that the fluid is from the heat exchanger area to the flow inlet of the mandrel is fed 39. The method according to claim 37, characterized in that g e k e n n -z e i c h e t that the temperature of the fluid allowed to the flow inlet above the solidification temperature of the applied to the surface of the mandrel Harz lies. 40. The method according to claim 37, characterized in that it is n -z e i c h n e t that the fluid is oil. 41. The method according to claim 37, characterized in that it is n -z e i c h n e t that an insulating material is arranged between the inlet channel and the outlet channel is used in order to ensure the heat exchange between the used fluid and the fluid flowing in via the inlet channel to prevent. 42. The method according to claim 41, characterized in that it is n -z e i c h n e t that the insulating material is air. 43. A method for producing plastic pipes, in which a liquid resin is applied to the surface of a mandrel and heated is solidified, indicated by the fact that the temperature of the resin while applying it to the surface of the Dorns below the solidification temperature of the resin is kept by a coolant with a temperature below the solidification temperature of the resin of a coolant reservoir passed along a flow path through the mandrel is that the used coolant after flowing through the mandrel to the coolant container is returned that the solidification of the applied resin is initiated, by interrupting the supply of coolant to the mandrel and a heat transfer medium with a temperature above the solidification temperature of the resin from a heat transfer container passed through the mandrel along the same flow path as the coolant is, and that the flow emerging from the mandrel from the coolant tank to the heat transfer tank is diverted when a rise in temperature of the exiting flow the presence of the heat transfer: crs. 44 The method according to claim 43, # thereby g e k e n n -z e i c h n e t that the used coolant prior to supplying the same to the mandrel through a Heat exchanger area is directed to its temperature below the solidification temperature of the resin. 45. The method according to claim 43, characterized in that it is n -z e i c h n e t that the temperature of the coolant supplied to the mandrel is substantially Ambient temperature is maintained. 46. The method according to claim 43, characterized in that it is n -z e i c h n e t that the flow emerging from the mandrel from the coolant tank to the heat transfer tank is initiated when your temperature is about in the middle of the temperature range of the coolant and the heat transfer medium 47. Method of manufacture of plastic pipes, in which a liquid resin is applied to the surface of a mandrel is applied and solidified by the supply of heat, thereby g e k e n n n z e i c h n e t that the temperature of the resin applied to the surface of the mandrel to solidify the same is kept above its solidification temperature by a heat transfer medium with a temperature above the solidification temperature of the resin Temperature from a heat transfer container along a flow path through the The mandrel is passed through that the used heat transfer medium after flowing through the Dorns is returned to the heat transfer tank that the supply of the heat transfer medium interrupted to the mandrel and the solidified resin on the surface of the mandrel to Removing the molded plastic pipe is cooled by using a coolant with a temperature below the solidification temperature of the resin along the same Flow path as the heat carrier is passed through the mandrel, and that the Flow emerging from the mandrel from the heat tank to a coolant tank ur-directed when there is a drop in temperature in the flow emerging from the mandrel indicates the presence of the coolant. 48. The method as claimed in claim 47, characterized in that it is g e k e n n -z e 1 c h n e t that the temperature of the material passed through the mandrel to solidify the resin, used heat transfer medium increased at least up to the solidification temperature of the resin will. 49. The method according to claim 47, characterized in that it is n -z e i c h n e t that the used heat transfer medium before the supply line to the mandrel through a heat exchanger area is passed to its temperature above the storage temperature of the resin keep 50. The method according to claim 47, characterized in that g e k e n n -z e i c h n e t that the flow exiting the mandrel from the heat transfer container the coolant tank is diverted when its temperature is about halfway between the temperatures of the coolant and the heat transfer medium. 51. A method of manufacturing reinforced plastic pipe, in which a layer of reinforcing fibers in combination with a solidifiable, liquid Resin applied to the surface of a mandrel, the applied resin by heating solidified beyond its solidification temperature and the plastic pipe formed in this way is stripped from the mandrel, thereby indicating that the temperature of the resin during its application in combination with the reinforcing fibers below its solidification temperature is kept by a coolant with a temperature below the solidification temperature of the resin from a 1tool medium container passed along a flow path through the mandrel and then again is collected in the Eühlmittelbehalter that the solidification of the applied resin is initiated by interrupting the supply of coolant to the mandrel and a Heat transfer medium with one of the solidification temperature of the resin at least equal Temperature from a heat transfer tank along the same flow path as the coolant is passed through the mandrel that the emerging from the mandrel Flow after solidification has started from the coolant container to the heat carrier container is diverted, when their temperature rises, that the heat transfer medium flowing into the mandrel in a heat exchange area at one above the solidification temperature of the resin lying temperature is maintained that the supply of the heat transfer medium before stripping of the pipe is interrupted and the mandrel is again supplied with the coolant, so that this him down the same flow path as the heat transfer medium flows through, and that the flow emerging from the mandrel then from the heat transfer container is diverted to the coolant tank when the temperature of the exiting Flow decreases. 52. The method according to claim 51, characterized in that it is n -z e i c h n e t that the flow emerging from the mandrel from the coolant container to the heat carrier container diverted when their temperature is about halfway between temperatures of the coolant and the heat transfer medium. 53. The method according to claim 51, characterized in that it is n -z e i c h n e t that the flow emerging from the mandrel from the heat carrier container to the coolant container is diverted when your temperature is about halfway between the temperatures of the cooling medium and the heat transfer medium 54. device for the production of plastic pipe, with means for applying a solidifiable, liquid resin to the Surface of a mandrel and means for heating the applied resin for Solidification of the same, not marked by a coolant container (402) for a circulating coolant, which is the temperature of the on the surface the mandrel (34) applied resin keeps below its solidification temperature by a heat transfer container (404) for a circulating heat transfer medium for heating the resin applied to the surface of the mandrel to a temperature above its solidification temperature lying temperature, and by an upper part of the heat transfer tank with an upper part of the coolant tank connecting flow path (406) for automatic Transferring the heat transfer medium to the coolant tank when the heat transfer medium tank is overfilled and to 'self-sufficient Transfer of the Kühimitteis to the heat transfer container if the agent container is overfilled. 55. Device for making plastic pipe on a mandrel, not shown by a device (500) for supplying a fluid to a number of intermittent and simultaneous around a common central axis rotatable mandrels (34) around, with a first disc (502), means (60) to rotate the first disc as the mandrels continue to rotate around their joint Center axis at an angle substantially equal to the angle of rotation of the mandrels, respectively a passage (512) for each mandrel in the first disc, one of the first disc complementary, fixed second disc (504), at least one the second Disc penetrating passage (512), means (412) for supplying a fluid medium to each passage of the second disc so that the fluid supplied to each with a passage of the second disc aligned passage flows through, devices (410) for supplying the fluid from the passages of the first disc the thorns assigned to them, and with one on the one facing the first disc Side of the second disk attached, surrounding the passages of the second disk Sealing arrangement (518) to prevent leakage of fluid between the facing surfaces of the two panes. 56. Apparatus according to claim 55, characterized in that it is n -z e i c h n e t that the disks (502, 504) penetrated by the same number of passages (512) are. 57. Apparatus for evacuating a number of fluid from intermittently and simultaneously rotatable around a common central axis Thorns, marked by a first disc (502) by means (60) for rotating the first disc as the mandrels rotate around their common central axis around one of the continuation of the mandrels (34) substantially same angle, penetrating through the first disc, each assigned to a mandrel Passages (512) through a second fixed disk complementary to the first disk Disc (504), through at least one passage penetrating the second disc (512), by means (411) for feeding the fluid from each mandrel to the passage of the first disc associated therewith, so that the fluid jed & im with a passage of the first disc aligned passage flows through, by means (413) for evacuating the fluid from that passage of the second disc and by a surface facing the second disc of the first pane brought sealing disorder surrounding the passages of the first pane (518) to prevent the flow medium from escaping between the facing Surface of the two panes. 58. Apparatus according to claim 57, characterized in that it is n -z e i c h n e t that the numbers of the two disks (502, 504) penetrating passages (512) are the same. 59. Apparatus for supplying fluid to a number from intermittently and simultaneously rotatable around a common central axis Thorns and for removing the fluid therefrom, g e n n e i c h n e t through a first disc (502) arranged transversely to the axis of rotation of the mandrels (34), by means (60) for advancing the first disc as it rotates; the Mandrels around the common central axis about one of the rotation of the mandrels substantially same angle, by one of the first disc complementary, fixed second Disc (504), each associated with an arrangement of a mandrel, of the feed of the flow by means of first passages (512A;) serving to each mandrel Which the two disks pass through essentially at the same mutual circumferential distances, so that before and after each turning of the first disc each first passage of the first disc is aligned with a first passage of the second disc, through a Number of each associated with a mandrel, the discharge of the fluid from the thorns serving second passages (5123), which the two disks substantially enforce at equal mutual circumferential intervals, so that before and after each Continuation of the first disc every other passage of the first disc with one second passage of the second disc is aligned, by means (412) for the Supplying fluid to each first passage of the second disc so that the fluid the respective with this aligned first passage of the first Disc flows through, by means (410) for supplying the fluid from the first passages of the first disc to the thorns assigned to them, by means (411) for supplying the fluid from each mandrel to the associated with it second passage of the first disc, so that the fluid a second passage in the second disk that is aligned therewith. flows through, by means (413) for evacuating the fluid from the second passages of the second disk and by one disposed between the first and second disks Sealing device. 60. Apparatus according to claim 59, characterized in that it is n -z e i c h n e t that the directional device (518) facing the first disc (502) Surface of the second disc (504) is attached and each passage of the second Surrounds disk. 61. Apparatus according to claim 59, characterized in that it is n -z e i c h n e t that the sealing device (518) on the second disk (504) facing Surface of the first disc (502) is attached and each passage of the first Surrounds disc.