DE3027156A1 - DEVICE FOR PRODUCING HOLLOW CYLINDER WORKPIECES FROM PLASTIC - Google Patents

Description

DR. BERG DiPL.-ING. STAPF DIPL.-ING. SCHWABE DR. DR. SANDMAIR ~ _n ~ _{ηΛ r} ~

3Ü2 / 156

PATENTANWÄLTE PO Box 860245 8000 Munich

■ H-

Attorney's file: 31 060 \ 7 July 1980

Hans Storchenegger

Gassing
CH-9473 Gams ■

Device for the production of hollow cylindrical workpieces made of plastic

»9) 988272 telegrams: Bank accounts: Hypo-Btnk Munich 4410122850

988273 BERQSTAPFPATENT Manchen (BLZ 70020011) Swift Code: HYPO DE MM

988274 TELEX: Π ^ ΠΠβ? / Π779 ⁸ ^ Verri »»! »* Manchen 453100 (BLZ 70020270) 983310 0524560BEROd UOUUO // Uf f £. Pojtichedc Manchen 65343-808 (BLZ 700100 SO)

Device for the production of hollow cylindrical Work pieces made of plastic

The present invention relates to a device for the production of hollow cylindrical workpieces made of plastic, in particular glass fiber reinforced plastic, in the rotation process, with a loading device for Introducing the plastic compound into the mold and using a hollow cylindrical one that can be rotated by a rotating device Form for receiving the plastic compound.

For the production of silos and the like are devices known, in which plastic and glass fibers in a hollow cylindrical set in rotation by a rotating device Form is introduced. The centrifugal forces distribute the synthetic resin evenly in the mold. After hardening a hollow cylindrical workpiece can then be removed from the mold. The workpieces produced in this way usually have a diameter of up to four meters. Workpieces with larger diameters pose transport problems so that their production is usually not worthwhile.

030067/0772

In order to be able to produce hollow cylindrical workpieces with a diameter larger than four meters, mobile devices known in which a hollow cylindrical Workpiece can be made by winding glass fibers and applying plastic to a mold. However, these devices have the disadvantage that a relatively complicated device is required, the also places high demands on the operating personnel. It is particularly disadvantageous that the roof and the floor are one Container still assembled from prefabricated elements or on site by manual coating a shape must be made.

It is therefore the object of the invention to create a device with which at the intended location for containers, Tanks or silos roughly hollow cylindrical workpieces made of plastic with diameters that also exceed four meters can be produced in a relatively simple manner.

According to the present invention, this is achieved by that in a device of the type mentioned at the beginning, the mold and / or the loading device can be pivoted on are arranged in a vehicle. This makes it possible to move the shape from a position with a practically vertical axis position into a Bring position with practically horizontal axis position and vice versa. The vehicle drives to manufacture the workpieces the intended location of the container, tank or the like. To facilitate transport, the Form can be dismantled into parts. The easiest way to assemble the parts is when the axis of rotation of the mold is perpendicular.

030067/0772

After assembling the parts, the mold can then be swiveled into the position of use, in which way the axis of rotation is horizontal. The pivotability of the mold, however, has another advantage. Because it is possible that the Complete the hollow cylindrical shape on one side by an approximately circular disk-shaped molded part. on this molded part can be made of synthetic resin with a vertical axis of rotation and a relatively slow speed of rotation and glass fibers are applied to form a container bottom or roof. The molded part is expedient arched, so that the arching of the bottoms, which is desired for containers for static reasons, is created.

The hollow cylindrical shape is expediently on at least one side is provided with a concentric groove for the formation of flanges on the workpiece. This allows the production of workpieces that can be stacked to make a container of any Great to make.

The charging device is expediently equipped with a device for leveling the inner surfaces of the Workpiece equipped. This makes it possible to produce workpieces in sandwich design with the device which a foam plastic layer is arranged between two plastic layers. It can be used to produce the Workpiece can be proceeded in such a way that first a plastic layer is produced in a rotation process and then a foam plastic layer is created. After the foam plastic layer has hardened, it becomes irregular The surface of this layer is leveled, after which the inner plastic layer can be applied.

030087/0772

The circular disk-shaped molded part can advantageously be separated from the hollow-cylindrical shape, with both the hollow-cylindrical shape made up of hollow-cylinder parts and the circular-disk-shaped one Part consist of cover parts. This type of division of the mold allows it to be transported on a small scale Space to store on the vehicle.

It is particularly advantageous if the device is designed in such a way that the mold can be lowered onto the floor. It There is then no need for a crane to remove the workpiece and place it on the floor.

The mold can be arranged on an arm articulated to the vehicle and pivotable by a drive device. on this way, the required pivotability is achieved with simple means the shape reached in a vertical or horizontal position. But it is particularly advantageous if the arm comprises two articulated links, the position of one link in relation to the other link can be changed by a drive element. In this case the arm can also be used to adjust the shape on the Lower the floor by changing the position of one link in relation to the other.

If the mold has at least two half molds which are mounted on slides and which can be moved radially towards and apart from each other by a drive device or has mold sections, the workpiece produced in the mold can be easily removed. This is special then the case when the fitting is rotated 180 degrees with the arm described, so that the circular disk-shaped Molding is on top when the mold is opened.

The guides of the carriages advantageously form a rigid frame which is rotatably mounted in the middle. This results in a structurally favorable structure.

030067/0772

A turntable or a hollow axle through which the loading device is advantageously provided for mounting the mold can be supplied with the material to build the workpiece. Meanwhile with stationary systems the charging device is supplied with material from the periphery of the hollow cylindrical shape, leads the proposed new training to a structure particularly favorable for mobile systems, which in particular the Lowering the mold to the floor to remove the workpiece allows.

The loading device is advantageously movable both in the axial and in the radial direction relative to the mold. this makes possible it is to form both the hollow cylinder and the cover of the workpiece with a single loading device.

An expedient configuration of the loading device provides a carriage movable along a guide attached to the arm and to which a boom is attached, wherein the casting head can be moved with the carriage in the axial direction and with the boom in the radial direction. With this configuration a simple construction of the loading device is achieved, which is housed entirely within the mold and When the workpiece is placed on the floor, it can be folded into a small space within the mold and is therefore light can be lifted through the opening in the roof.

The pouring head of the charging device is advantageously arranged to be pivotable. This enables the same To use casting head both for the production of the hollow cylinder and the roof of a workpiece.

030067/0772

The drawing shows two exemplary embodiments of the Device shown: It shows:

Fig. 1 is a side view, partially in section, of a first embodiment of the device, consisting from the form drawn in section with the loading device, in the vertical position for the casting process of the cylinder, mounted on a semi-trailer vehicle,

FIG. 2 is a top view, partly in section, of the device according to FIG. 1, with the material tanks, Conveyor and fiberglass magazine installed on a second semi-trailer vehicle are visible,

3 shows a side view of the device, the mold being in a horizontal position for the casting process of the ground

FIG. 4 is a plan view of the device according to FIG. 3 together the material tanks etc. of Fig. 2,

FIG. 5 shows a side view according to FIG. 3 with the mold open for shaping the finished workpiece, with the finished workpiece is lifted out of the open mold using a crane,

6 shows a plan view of the device according to FIG. 5 with the loading device pivoted to the side, and FIG the possible locations of the silo to be built,

7 shows a side view of a silo shown in its structure, consisting of several cylinder joints, the illustration the already completed upper part supported by lifting elements and the next element, which is pushed underneath shows

FIG. 8 is a plan view of the process according to FIG. 7,

030067/0772

Fig. 9 shows a flange for screwing cylinder

push,

Fig. IO a flange for gluing together cylinder

push,

11 and 12 are a side view and a plan view of a

second embodiment of the invention Device in which the mold is disassembled into parts for transport. In this embodiment there are material tanks, conveying means for the plastic material and the fiberglass magazine on the same semi-trailer vehicle like the shape,

Fig. 13 is a side view of the device according to the

Figures 11 and 12, the mold in a vertical position for the casting process of the Cylinder is shown in section,

FIG. 14 shows a side view as in FIG. 13, however

with the mold in a horizontal position for the pouring process of the soil,

15 shows a top view of the system according to FIG. 14,

FIG. 16 shows a view as in FIG. 15, but after

a pivoting of the mold by 180 degrees from the horizontal position of FIGS. 14 and 15 for placing the workpiece on the floor,

17 shows a plan view of the position of the mold shown in FIG. 16, but with the The mold is open to reveal the workpiece.

030067/0772

A two-part or multi-part cylindrical mold 11 is built up on a rotating device 13 so that mold parts, e.g., two Half-molds 15, 17 are each attached to a carriage 23, 25 (FIG. 6) running on two parallel guides 19, 21, that they can be moved apart radially. The guides 19, 21, which guide the two carriages 23, 25, form one rigid frame 27, which is rotatably mounted in the center, for example on an axis 26 and driven to rotate the mold can. The whole is seated at the outer end of an arm 29, which is hingedly attached at 30 to a semitrailer vehicle 31 at the rear and by a drive device such as a hydraulic cylinder 33, can be raised and lowered.

The mold 11 has grooves 35 at both ends, which on the hollow cylinder 36 (FIGS. 9 and 10) of the finished workpiece or element 37 form the connecting flanges 39 and at the same time act as a stiffener of the workpiece. In addition, the mold 11 has a molded part in the form of a circular disk on the bearing side Lid 40. This allows workpieces 37 in the form of a hollow cylinder 36 with flanges 39 or with the same shape in the form of a hollow cylinder 36 with a roof 41 (Fig. 7) Roof 41 advantageously has an opening 42.

Depending on the diameter, the mold 11 is composed of several molded parts or sectors 73, the sizes of which are dimensioned so that that they can be screwed together e.g. with the help of the crane 45 or dismantled for transport on the road and on the Vehicle 31 can be set (Fig. 11 and 12) without exceeding the permissible mass for road transport. Through this a completely independent movement of the device from one construction site to the next is guaranteed.

030087/0771

Al-

The loading device 47 is attached to the arm 29 in such a way that it can move horizontally and vertically with the mold 11 Can also be pivoted position. The exact distribution of the The plastic compound in the mold 11 is carried out by the pivotable pouring head 49, which is movable in the longitudinal and radial directions. This means that the workpiece 37, with or without a roof 41, is cast using the same device without retooling can be. By changing the feed speed of the casting head 49, the wall thickness of the workpiece 37 can be varied depending on the requirements in order to make optimal use of the material. The mold 11 and the feeder 47 are advantageously driven by an off-grid system (not shown). For stabilization of the device, two supports 50, 52 are provided at the rear and at the front of the vehicle 31.

The plastic is supplied via pressure lines 51 by special conveying means, e.g. a pump 53, from tanks 55, which are set up together with the fiberglass magazine 57 on an escort vehicle 59, for example.

The charging device 47 can also be equipped with a device (not shown) for leveling the inner surfaces of the workpiece 37 be equipped.

For the casting of the hollow cylinder 36 of the workpiece 37, the mold 11 is in the vertical position, as shown in FIG

bent and set in rotation. Is that in the form 11 \

introduced by the pouring head 49 moved to and fro;

When the plastic compound has hardened, the mold 11 is lowered into the horizontal position, as shown in FIG. Becomes a hollow cylinder joint 36 with roof 41 is required e.g. as the top element of a silo 61 (Fig. 7), the pouring process now takes place of the roof 41. If the use of the hollow cylinder 36 does not require a roof 41, this can be done with two connecting flanges 39 (Fig. 9 and 10) provided workpiece 37 are already formed.

030087/0773

For this purpose, the connecting elements (not shown) released on the mold 11, the half molds 15, 17 moved apart and the workpiece 37 is exposed (FIG. 6). If the roof 41 of an element 37 is used below as a floor, it lies correctly in the form 11 and only needs to be lifted off and to be lowered next to the device. But when the roof 41 is needed above, e.g. as the uppermost part of one Silos 61 (Fig. 7), the finished workpiece 37 is lifted out of the open mold 11, by means of e.g. Construction crane 45 suspended rotating device 63 rotated suspended and then lowered.

So that no scaffolding is required for the construction of a silo 61 (FIG. 7) consisting of several superposed elements 37 is, the uppermost element 37 consisting of hollow cylinder 36 and roof 41 is first made and by means of the lifting devices 65 raised by a joint length so that the next element 37 with the aid of the supports provided with rollers 67 can be pushed underneath. If the lowest element 37 is aligned, the upper part of the silo 61 is lowered and connected to the lower one, which takes place as required by screws 69 (FIG. 9) or by gluing (FIG. 10). To this This ensures that all work relating to the assembly of a silo can be carried out on the ground, what with minimal effort and the greatest possible security for Man and material can be made.

The second exemplary embodiment of the invention shown in FIGS. 11 to 17 differs from the first exemplary embodiment in particular by the fact that the loading device 47 passes through a hollow axle or a turntable 71 is supplied with plastic and / or glass fibers, and that the mold 11 from the horizontal casting position by 180 degrees or can be pivoted by 90 degrees from the vertical casting position to the workpiece 37 produced therein (FIG. 7) the floor (Fig. 16 and 17).

030087/0772

This makes the crane according to the first embodiment dispensable and the additionally available space on the vehicle 31 stands for the tanks 55, the plastic conveying means 53 and the fiberglass magazine 57 are available. Apart from this, the structure of the device is essentially the same as in the previously described embodiment, so that the same reference numerals are used.

The mold 11 consists of two half-molds 15, 17 (FIG. 17), which in turn are again assembled from five sectors 73. These consist of a hollow cylinder part 74 and a cover part 75. For transport, the parts 74, 75, as in the Figures 11 and 12 shown on the vehicle 31 are arranged. In addition to the distribution shown, are of course other form divisions are also possible.

Each cover part 75 of a half-mold 15, 17 is connected to a slide 23, 25. These slides 23, 25 run in parallel guides 19, 21 which are connected to one another and form a fixed frame 27. This framework is at the center rotatably mounted and can be driven by a rotating device 13 in order to rotate the mold 11. To open and Closing the mold 11 is used, for example, by spindles 77 which can be driven by a motor (not shown).

The storage of the frame 27 on which the mold 11 is arranged, takes place with a slewing ring, in particular a ball slewing ring 71 with internal toothing, such as that used in slewing cranes, for example is known. A pinion 81, which is driven by a motor 83, engages in the internal toothing. The storage could but also take place on an axis, which should then expediently be designed as a hollow axis in order to pass through it to enable charging with plastic and fiberglass.

030067/0773

This type of loading is useful when the workpiece with the shape as shown in Figure 16 / to be lowered to the floor.

As can best be seen in FIG. 13, the loading device 47 has one on the arm for the longitudinal movement of the pouring head 49 29 arranged and leading through the center of the mold 11, e.g. U-shaped guide 85 on which a carriage or slide 87 can be displaced by the motor 89 via a spindle 91 indicated by dash-dotted lines in FIG. In this way the casting head 49, as indicated by the arrows 92, can be moved back and forth. The pouring head 49 is pivotable attached to a radial, advantageously telescopic arm 93 which is attached to the carriage 87. The casting head can can therefore also be moved radially by the drive 95, for example a spindle, as indicated by the arrow 92 in FIG is. The telescopic shape of the boom 93 is advantageous for the loading device after the formation of a workpiece with a roof 41 to accommodate in a small space in the center of the mold, so that they are placed on when the workpiece is placed the floor can be extended from the opening 42 of the workpiece 37 without difficulty.

The pressure lines 51, which convey plastic pumped from the tanks 55 by the pump 53 to the charging device 47, lead through the slewing ring 71.

To cast a hollow cylindrical workpiece 37, the mold 11 is raised into the vertical position, as shown in FIG. 13, in Rotation offset and loaded with plastic and fiberglass. If the plastic compound has hardened, the mold 11 is in the horizontal position, as shown in Figure 14, lowered and opened. In this way, the manufactured workpiece 37 can be set down on the ground without using a crane.

030067/0772

In order to make this possible in a simple manner, the mold is articulated on a vehicle 31 so as to be pivotable at 30 Arm 29 arranged. The drive device 33, a hydraulic cylinder, is used to pivot the arm 29. Of the Arm 29 consists of two articulated L-shaped members 96, 97, the position of one Link 97 can be changed in relation to the other link 96 by a drive element 98. There is the shape in the horizontal position shown in Figure 14, the actuation of the hydraulic cylinder 33 causes a Pivoting into the vertical position shown in FIG. If the drive element 98 is then still further actuated, the pivoting into the position shown in FIG. 14 takes place, as is the case when the workpiece 37 is deposited on the floor is necessary.

030067/0772

summary

The device enables the production of hollow cylindrical Workpieces at the place where a container, e.g. a liquid manure container or a silo is required. The mold (11) is arranged on a vehicle (31) and can be moved from the horizontal pouring position into the vertical one Be brought pouring position. The mold (11) is broken down into parts or sectors (73) for transport and for production it is then put together in a horizontal position. After assembly, it can be swiveled into the vertical position in order to produce workpieces in a rotary process. But it is also possible with the form in a horizontal position Manufacture the base and roof of a workpiece. The special design of the arm 29, which has two L-shaped links (96, 97) allows the workpieces to be unloaded on the ground without a crane.

(Figs. 13 and 16)

0300S7 / 0772

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Claims (16)

DR. BERQ D IPL.-I N Q. ST APF Lawyer file: 31 060 DIPL-IN3. SCHWABE DR.DR. SAKDMAIR PATENT LAWYERS 8 MÖNCHEN 80 · MAUERKIRCHER8TR. 45 Claims Device for the production of hollow cylindrical Workpieces made of plastic, in particular glass fiber reinforced plastic, in a rotation process with a Feeding device for introducing the plastic compound into the mold and with a rotating device rotatable approximately hollow cylindrical shape for receiving the plastic compound, characterized in that the shape (11) and / or the loading device (47) are arranged pivotably on a vehicle (31). 2. Device according to claim 1, characterized in that the mold (11) can be dismantled for transport into parts (73) is. 3. Device according to one of claims 1 to 3, characterized in that that the hollow cylindrical shape (11) on one side by an approximately circular disk-shaped molded part (40) is complete. 4. Apparatus according to claim 3, characterized in that said molded part (40) is curved. 5. Device according to one of claims 1 to 4, characterized in that that the hollow cylindrical shape (11) on at least one side with a concentric groove (35) for Formation of flanges (39) is provided on the workpiece. 6. Device according to one of claims 1 to 5, characterized in that that the loading device (47) with a device for leveling the inner surfaces of the Workpiece is equipped. 030067/0772 ORiGiNAL INSPECTED 7. Device according to one of claims 1 to 6, characterized characterized in that the circular disk-shaped molded part (40) is separable from the hollow cylindrical shape (11), and that both the hollow cylindrical shape (11) are made of hollow cylinder parts (74) and the circular disk-shaped part (40) consists of cover parts (75). 8. Device according to one of claims 1 to 7, characterized characterized in that the mold (11) can be lowered to the floor. 9. Device according to one of claims 1 to 8, characterized in that the mold (11) on one of the vehicle (31) hinged, pivotable by a drive device (33) Arm (29) is arranged. 10. Device according to one of claims 1 to 9, characterized in that the arm (29) is two hinged to one another connected links (96, 97), the position of one link (97) in relation to the other link (96) can be changed by a drive element (98). 11. Device according to one of claims 1 to 10, characterized in that the mold (11) has at least two Carriages (23, 25) mounted half-molds (15, 17) which can be moved radially towards and away from each other by drive devices or has mold sections. 12. The device according to claim 11, characterized in that guides (19, 21) of the carriages (23, 25) have a rigid one Form frame (27) which is rotatably mounted in the middle. 030067/0772 13. Device according to one of claims 1 to 12, characterized in that a turntable for mounting the mold (11) or a hollow axle (71) is provided through which the loading device (47) with the material can be supplied to build up the workpiece (37). 14. Device according to one of claims 1 to 13, characterized in that the pouring head (49) of the charging device (47) is movable both in the axial and in the radial direction relative to the mold (11). 15. The device according to claim 14 or 15, characterized in that the charging device (47) along a a guide (85) attached to the arm (29) has a movable carriage (87) on which a telescopic boom (93) is attached, the pouring head (49) with the carriage (87) in the axial and the telescopic boom (93) in the radial Direction is movable. 16. Device according to one of claims 14 to 15, characterized in that the pouring head (49) of the charging device (47) is arranged pivotably. 030067/0773