FI58195B - MASKIN FOER TILLVERKNING AV ROER MED STOR DIAMETER I SYNNERHET AV EN SILO - Google Patents

Description

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Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) P 2250239-2 (71) Silo Verfahrens AG, Hofstrasse 1, CH 6301 Zug, Switzerland-Scrvweiz (CH) (72) Xaver Lipp, Tannhausen, Germany Li it t ot.as avalt a- Förbundsrepub liken Tyskland (DE) (7M Oy Heinänen Ab (5U) Machine for the production of large-diameter pipes, especially silos -

The mask is used for measuring the diameter, and is synergistic

The invention relates to a machine for producing a large diameter pipe, in particular a silo, from a sheet strip wound on a storage pipe 111, comprising a base-adjustable motorized profiling station with a path corresponding to the pipe curvature of the pipe and substantially offset from the cylinder-defined cylinder. an adjustable sealing station and a base-adjustable annular frame spaced apart from its lower end along a helical line by spaced apart support rollers for supporting the tube from its flange, the path of the profiling station passing adjacent the path of the helical roll defined by the support rollers and the path of the sealing station coinciding

The invention relates to a machine with which a vertically standing pipe, in particular a silo, can be produced in a simple manner from the bottom, whereby after the manufacture of the pipe or silo the machine parts inside the pipe can be taken out before the pipe is laid on the base. Since the machine with the frame, the profiling device and the sealing device is on the base, the steps required to make the pipe from one sheet strip can be performed from the base regardless of the height of the pipe or silo, while at the manufacturing stage the pipe or silo is screwed up on support rollers. The finished tube resting on the support rollers may have a distance to the bottom in the lower ace such that the machine parts resting on the bottom inside the tube can be removed from the tube before it is lowered onto the base, causing the tube to be turned in the opposite direction like a screw. The support rollers support the pipe until it is the end of the base 1 la.

The German magazine "Blech" 1971, Heft 6, pages 332 and 333, discloses a machine which is the starting point for the present invention. With the aid of a known machine, it is not possible to work automatically with sufficient accuracy, but constant supervision of the manufacturing operation is required, which requires trained personnel. Although silos can be made with a known machine, the height of the silos is limited by the seam made by the machine and the different radial position of the adjacent turns.

The object of the invention is to better control the profiling of the Rena sheet strip wound into a tube and the sealing of the turns located above each other than in a known machine and to maintain a predetermined diameter of the tube within narrow limits. The invention is characterized in that between the profiling station and the sealing station, two limit switches are arranged in the frame at a radial distance from each other to control at least one motor using a disc strip.

In practice, the motor of the profiling station is controlled so that the motor stops when the plate strip acts on the outer switch and the motor starts as soon as the plate strip acts on the inner switch. However, if the limit switches control the drive motor of the sealing station arranged in the direction of travel of the plate strip inside the frame after these limit switches, the conditions are reversed. Of course, it is also possible to control the drive motor of the support rollers, corresponding to the motor of the profiling station when it is located in front of the switches in the direction of travel of the plate strip and against the motor of the sealing station when it is arranged behind the switches in the direction of travel of the plate strip.

This control provides a uniform feed of the sheet strip to the sealing station 1 so that a substantially evenly formed seam is present throughout the pipe and the predetermined diameter of the pipe remains within relatively narrow limits.

The invention is undoubtedly new and cannot be taken for granted to the average person. Until now, professionals have tried to avoid large inconveniences in the manufacture of a diameter pipe.

Za 58195 dat by reinforcing the sealing rollers of the sealing station and increasing the number of sealing roller pairs at this station. But the measures taken have led to the desired result, the less thick the strip tape has had to be chosen and the higher the silos to be produced and the larger their diameter.

3,581 95

Other advantageous features of the invention will become apparent from the other claims, the description and the drawing. Here is shown schematically a machine for manufacturing a storage silo as an embodiment of the subject of the invention.

Figure 1 shows a top view.

Figure 2 shows a patch of the profiling device along the line II-II in Figure 3 on a second scale.

Figure 3 shows the patch along the line III-III in Figure 2, as well as on another scale.

Figure 4 shows the point of the sealing device on a larger scale than the drawing 1.

Figure 5 shows the patch along the line V-V in Figure 4 on a second scale.

Fig. 6 shows a section along the line VI-VI in Fig. 1.

Figure 7 shows a top view of the support roller drive.

Figures 8-13 show different profiled ends of the plate strip.

Figures 14-18 show the joining of the adjacent edges of the plate strip to each other at different stages and on another scale.

Figure 19 shows a seam width through strip diagram.

In its entirety, the ring frame marked 1 has an upper ring 2 and a lower ring 3. Each of the strips 2,3 is formed into detachable, suitably sized pieces into ring segments. The upper ring 2 and the lower ring 3 are connected at one distance from each other by means of evenly spaced "vertical columns 4, which columns have a rectangular or circular cross-section and are also hollow. In the embodiment according to Fig. 1 there are also ten columns and an upper ring into three parts.

Each post 4 has a pivot arm 5 mounted on a substantially horizontal axis pivotally on the inside of the ring frame 1. The pivoting area of the pivot arm is limited by a tie plate 6, which has a longitudinal hole for receiving a abutment attached to the column. At the free end of each pivot arm 5, a rotating support roller 7 is mounted. A support roller 8 mounted on the same pivot arm 5 can be arranged on the support roller 7, which prevents the flange of the pipe to be manufactured from rising. Attached to one of the posts is a radially inwardly projecting support 9, which has two limit switches 10 and 11 at radially spaced ends.

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A profiling device 15 is arranged on the inner side of the ring frame 1 in the vicinity of one support roller 7, in which there are eight cooperating groups of rollers in two planes, specially provided with pairs of rollers arranged on axes perpendicular to the screw line. instead of an arranged roller with a vertical axis, two rollers with an approximately horizontal axis can also be provided so that the three rollers co-operate. The rollers of the profiling device 15 are formed and arranged so that the edges of the plate strip become bent according to Figs. 8-13.

Corresponding to Fig. 3, the coaxially arranged rollers arranged one above the other are arranged on the same, approximately vertical shafts 22 and 23. When the shaft 22 is arranged fixedly between the top plate 24 and the base plate 25, the shaft 23 can be moved transversely to its axis. arranged setting device. The setting device has a U-shaped frame 26 attached to the main plate 24 or the base plate 25, between the arms of which a bearing receiving and a square sleeve moving in a horizontal direction moves in a horizontal direction. To limit the movement of the hockey 27 away from the shaft 22, an adjusting screw 28 is screwed into the frame strip. The bearings at both ends of the shaft 23 can be adjusted in the same way.

The top plate 24 and the base plate 25 are connected to each other according to Fig. 3 by a support tube 30, a set screw 31 and ring segments 32-34 arranged between them on their left side. Openings are provided above the ring segment 32 and in the ring segment 34 for the passage of the set screws. In the drawing, a threaded, non-adjustable support rod is arranged at each end, which supports a support plate 36 connected to the top plate at its upper side and which is screwed to the base plate 25 at its lower end. At a distance therefrom, a motor support 37 is attached to the support rod 35.

If, instead of a roller with an approximately vertical axis, there are two similarly adjustable rollers with a horizontal axis, then the approximately vertical axis above or below it extends only approximately up to the ring segment 33. Such a short shaft must be positioned in the same way in the ring segment 33 as the shaft 23 with respect to the ring segment 32 or 34.

Each of the approximately vertical shafts is provided at its lower end with a similar gear, the gears connecting the pairs of shafts arranged next to each other, e.g. shafts 22 and 23, to each other. Between the two interconnected gears there is an intermediate gear 43 connected so that in the use of the intermediate gears on the drive wheel of the member 45, all the gears are accessible by a steplessly adjustable drive motor 46.

Arranged on each of the large-area sides of the profiling device is a support wheel 48 which can be raised and lowered, which is rotatably mounted inside a U-shaped slide 49, which can be raised and lowered by means of an adjusting screw 50, the slide 49 being guided in a T-shaped groove in the guide track 51. During operation, the profiling device 15 is on its base plate 25 and can be made movable by means of support wheels 43.

The sealing device is shown in Figures 4 and 5. It is arranged on an inclined annular segment-shaped table 54, which is turned in the longitudinal direction corresponding to and transversely to the pitch of the helical line, as described below. Arranged on the table 54 are four sealing units 55, each sealing unit being formed similarly (Fig. 5), except for their sealing rollers 56 and 57. A transmission member is arranged between the side walls 59 and 60 of the base part 58, having a substantially vertical drive shaft 61 with a drive chain 62 and a bevel gear 63 communicating with a bevel gear arranged substantially horizontally on a shaft 65 having a sealing roller 56 at one end. which pivoting position can be set on the side wall by means of a support screw 68 supported, whereby the respective position of the sealing roller 57 with respect to the sealing roller 56 depends on the thickness of the joint.

The inclination of the table 54 in the radial direction is such that in the position of the sealing rollers 56 and 57 shown in Fig. 5, the bisector of the angle between the shafts 65 and 66 is mainly horizontal. Thus, it is provided that the sealing rollers 56 and 57 face each other against a seam 3a, with a gap between the other parts of the sealing rollers 56 and 57 and the pipe or silo to be manufactured.

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The sealing device 53 is driven by a drive motor 69 »which drives individual sealing units 55 with chains, whereby a tensioning wheel 70 is always connected between the two sealing units or the sealing unit and the motor. arranged two drive sprockets 62 above each other.

In the sealing device 53, the sealing joints shown in Figures 14-18 are made.

Arranged in the table 54 by means of brackets 72 is likewise a helical table 73 with a plurality, in this case six, radially displaceable counter-rollers 74 of each leveling device. inside a shaped handle 76, to the flange of which a bearing screw 77 setting the bearing is screwed.

Arranged above each counter roller 74 is a counter roller 74a, the bearing of which is formed in the same manner and transversely displaceable as the bearing 75 of the counter roller 74, however, the bracket denoted herein by at least 78 engages the bearing of the counter roller 74 at least on its underside. The handles 78 are attached to a mounting plate 79 arranged above it, which is supported relative to the table 73 by means of supports 80.

The counter-rollers are to be placed against the part below the helical line and the counter-rollers 74a are to be placed against the part of the pipe helical line of the pipe separated by the seam above it. With the help of adjustable counter-rollers, the plate strip can be pressed between the sealing rollers, and it becomes possible to change the diameter of the pipe within certain limits.

The machine can be disassembled into easily transportable parts with few steps, so that the ring frame 1 is disassembled and the profile device 15 and the sealing device 53 are removed from the ring frame, whereby the handles 72 can be removed from the table 54.

A coil 83 is arranged next to the profiling device 15, which acts as a receiver for the roll of tape. In order to guide the plate strip before entering the profiling device 15, the profiling device 15 is provided with a guide device on the side facing the spool 83 and having a substantially vertical transverse slot, where a height-stolen guide plate is placed on this side, especially with a longitudinal hole. a control member 84 for the disc strip, of the best position. The guide member can be used to set the correct width of the seam to be made in the profiling device 15. The guide members are about 30 cm above the guide plate and extend to the first roll, whereby the lower guide member 84 may be further located, as shown. The guide means can be used to push the sheet metal into the profiling device as it is pressed down or up. The guide members can be formed straight or bent and placed obliquely. The coil „83 has a stop ring 85 which is open in its fixed part in the direction of the ring frame 1, which surrounds the plate roll at a distance and prevents the plate roll from increasing too much in diameter as its rotation slows down.

Fig. 7 shows a drive roller 7a on a shaft 87 to be used, which is accessible by means of a continuously variable drive motor 88 by means of a V-belt (not shown). The shaft 87 is mounted on a frame 89, which is arranged on the side of one column, on the other side of which there is a drive motor on a base plate 90 connected to the frame 89. The frame 89 and the base plate 90 can be fixedly or by means of a pivot arm 5 to the column in question. The drive wheel on the shaft 87 can act as a user of the counter roller 8 arranged in the frame 89.

To make the silo, the machine is assembled on top of its concrete slab or the like in the condition shown in Fig. 1, where the distance of the rings 2 and 3 of the ring frame 1 is preferably greater than twice the helix of the pipe to be manufactured. with respect to the helix. The upper ring of the ring frame 1 can also run like a helical line, whereby the ends above each other can be connected together with a vertical connecting piece. The uppermost support roller 7 is best at a height corresponding to at least twice the pitch of the pipe to be manufactured.

The path of the bucket inside the profiling device 15 is formed in such a way that the edges of the strip are bent according to Figures 8-13 and the strip part between them corresponds to the diameter of the pipe to be manufactured.

The plate strip is guided from the spool 83 to the profiling device 15 and is finally supported by the support rollers 7 from its upper bent edge, as shown in Fig. 6, their upper circumference being in each case at a bending point 581 95 8 adjacent to the vertical wall of the pipe. the plate strip is passed forward at the lower end between the limit switches 10 and 11, the outer limit switch 10 decreasing the speed of the drive motor 46 of the profiling device 15 and the limit switch 11 increasing its speed to achieve control of the drive motor speed of the sealing device 53, respectively. According to the boundary switches 10, 11, a plate strip carried from both edges is passed through a sealing device, where the adjacent edges of the plate strip are joined by sealing together according to Figures 15-18 after the adhesion according to Fig. 14 as soon as the edges are above each other.

The pipe or silo is manufactured continuously as described, in which case the pipe is slowly screwed up according to the height. As soon as the desired height of the pipe is reached, it is cut evenly across from below. The profiling device 15 and the coil 83 are removed from inside the ring frame 1 and also the parts inside the sealing device 53 and the leveling device 74, 74a and the support 9 with limit switches 10 and 11. The tube is then lowered in the opposite direction until it is on the base.

The diagram shown in Fig. 19 shows a suitable seam width F / mra, depending on the pipe diameter D / m and depending on the plate strip thickness, where curve a relates to a plate thickness of 1-2.5 mm, curve h relates to a plate thickness of 2-5 mm and curve c for a plate thickness of 4-8 mm. Deviations of ± 50% from the given values are possible.

Claims (2)

3 58195 A machine for producing a large diameter pipe, in particular a silo, from a sheet strip wound on a storage roll, comprising a base-adjustable motorized profiling station with a path corresponding to the pipe wall curvature and a path displaced relative to the cylinder defined substantially on the other side of the pipe wall a sealing station and a base-adjustable annular frame having support rollers spaced apart at its lower end along a helical line to support the pipe from its flange, the profile of the profiling station passing adjacent the path of the helical line defined by the support rollers and the path of the sealing station coinciding with between the profiling station (15) and the sealing station (53), two limit switches are arranged in the frame (1) at a radial distance from each other ä (10,11) for controlling at least one motor (46,69, 66) using a disc belt. Machine according to claim 1, characterized in that the inner switch (11) acts to increase the speed of the drive motor (46) of the profile station (15) and the outer switch (10) to decrease it.