FI64524C - RELEASE OF THE FURNITURE OF THE CORROSION - Google Patents

Description

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Patent and registration authorities Ansökan utlafd och utl.skrtftan publkcrad 3J_.U0.0J

(32) (33) (31) Privilege claimed - Begird prloritet 11. 0U. 72

Federal Republic of Germany (DE) G 7213UU9.7 (71) Heinrich Oltmanns, 2901 Jeddeloh I, Federal Republic of Germany (DE) (72) Heinrich Oltmanns, Jeddeloh, Klaus Volckmann, Bad Zwischen

Federal Republic of Germany-Förbundsrepubliken 7yskland (DE) (7U) Leitzinger Oy (5U) Apparatus for making holes in corrugated bottoms of corrugated pipes, in particular for drainage - Anordning för upptagning av hai i dal-bottnen av corrugerade rör

The invention relates to an apparatus for making holes in the corrugated bottoms of corrugated pipes, in particular for drainage, comprising a plurality of piece-shaped tool holders arranged synchronously with the corrugated pipe feed, arranged in endlessly rotating opposing chains, with a plurality of radially reciprocating feeders arranged simultaneously.

It is known to provide the bottoms of the corrugated drainage bottoms with protruding bumps which are cut open with rotating cutting tools adhering to the corrugated bottoms so as to provide openings necessary for the passage of water. In this case, the waveguide becomes awkwardly shaped and the cutting tools have to be made different for helical and annular corrugated tubes.

The object of the invention is to provide a device of the type mentioned in the introduction, which is simpler in construction and enables a higher working speed, suitable for threaded corrugated and annular corrugated pipes equally well.

The task is solved according to the invention in such a way that the tool holders are formed in two parts in the form of pliers halves which abut each other on the working line and completely surround the corrugated pipe. Because the openings are formed in the wavy bottoms by impact and the punching tool follows the waveguide, very high working speeds are achieved. In addition, the device is available for helical corrugated as well as annular corrugated pipes, as the same mode of operation is suitable for both pipe types.

Other features of the invention are described in claims 2-6 below.

Some embodiments of the invention are illustrated in the accompanying drawings, in which Figure 1 shows a side view of a device according to the invention.

Figure 2 shows, on a larger scale and in the stamping position, two chain ellipses of the device according to Figure 1.

Figure 3 is a side view half taken from Figure 2.

Figures 1, 2 and 3 illustrate an embodiment of a Stans dryer according to the invention, in which the working echo sockets are arranged in rotating, endless chains 16. The positions of the chains can be thought of as being formed by turning 180 ° from one position to another. The tool holders consist of cohesive pairs of jaws 1 which surround the corrugated tube 2 on the machining part of the chains 16 so that the corrugated tube becomes engaged as the toothing 3 engages the tube corrugations 4 (compare the part of the longitudinal section shown in circle A in Fig. 2). On the working line, the tool holders 1 form a closed rod. As illustrated in Figure 2, they are provided with coupling-like gripping elements, which are coupling pins 21 and coupling sleeves 22 for connecting the halves 3,64524 to each other on the working line. Each tool holder 1 is provided with tools 5 for the circumferential half of the corrugated tube. In the illustrated example, the six tools 5 are distributed on the circumference so that, as illustrated in Figure 2, the tools form a hexagonal gripping crystal surrounding the corrugated tube at the work site. Only two of the six tools 5 with their guides 9 are illustrated in the drawing.

At the feed point, each tool holder 1 extends over a plurality of entrained corrugated tubes 4, e.g. ten corrugated bases 4 and each tool holder 1 has three tool rows at an angle of 60 ° to each other, each row comprising five tools for piercing every other pleat bottom, e.g. are staggered with respect to each other by the corrugation division (compare section B of the corrugation base area shown in Fig. 2).

The cutting tools 5 run in guides 13. The cutting tools are acted upon by springs 10 which rest on a transverse rod 14 inserted through the bore of the tool arm. In the illustrated example, this transverse rod 14 is made as a spring rod located in the slot 15 of the tool holder 1 for the support spring 10.

For the operation of the cutting tools 5, guide springs 9 are provided which are in the form of freely rotating rollers which are mounted on fixed holders 17.

The speed of the blade drive depends on the diameter of the roller-shaped guide wires 9. When the diameter is small, the operation takes place faster than when the diameter is large. However, since the stamping work takes place on the straight cutting portion of the chains supporting the cutting tools, large diameters are also obtained when using high machining speeds at correspondingly high chain speeds. The same large guide rollers 9 then simultaneously use several, e.g. three or five, cutting tools 5. The simple pin-shaped guide cams 8 of the cutting tools extend over the outer side of the tool holders 1. The slots 15 receiving the spring rods 14 are covered with lids 18 having openings for the passage of the guide cams 8.

4,64524

The tool holders are provided with a fixed connection to the chains 16 with slots 19 for receiving the chain connector 24 and with bores 20 for the bolts 25.

The toothing 3 of the tool holders 1 has chamfers 23 to ensure frictional adhesion to the corrugations of the corrugated tube 2.

Claims (6)

A device for making holes in the corrugated bottoms of corrugated pipes, in particular for drainage, comprising a plurality of piece-shaped tool holders arranged in continuous ends on counter-rotating opposing chains synchronously with a corrugated pipe feed, having a plurality of radially spaced, reciprocating feeders in that the tool holders are formed in two parts in the form of clamp halves (1, 1) which abut against each other on the working line and completely surround the corrugated pipe. Device according to Claim 1, characterized in that the tool holders (1) form a closed, gap-free row around the corrugated tube (2) on the working line. Device according to Claim 1, characterized in that the tool holders are provided with coupling-like gripping elements (21, 22) for gripping each other on the working line of the associated clamping halves. Device according to Claim 1, characterized in that the tools (5) are arranged in the tool holders (1) offset by one or more corrugations (t). Device according to Claim 1 or 4, characterized in that fixed free-rotating rollers (9) are arranged in the path of the punching tools (5) for impact. 5,64524 Device according to Claim 4, characterized in that the tool rows which are adjacent in the circumferential direction are offset relative to one another in the axial direction by the corrugation division (s).