DE2038151A1 - Perforating plastic tubing - by spring steel punch operated by profiled path on operating disc to give piercing and withdrawal ac - Google Patents

Abstract

In perforating plastic tubing for drainage applications, the tubing is fed by rollers through the central bush of a motor-operated disc fitted with a profiled groove. As the groove rotates, a slide carries a spring steel punch into contact with the tubing, punch a hole, and be withdrawn by the action of the profiled groove. The punch is hollow for working with smooth-walled plastic tubing, and has a rounded end for piercing ribbed material.

Description

Borisovskij zavod plastmassovych izdelij Borisov / USSR DEVICE FOR PUNCHING DRAINAGE PIPES The invention relates to Generation of Drainage pipes, in particular devices for perforating smooth-walled and corrugated drainage pipes.

It is a device for hole n of development watering # pipes' known (. USSR copyright no. 193045).

The known device includes an implement that has a Representing electric motor shaft attached disc milling cutter. The implement is set in a pendulum motion by a cam mechanism, during which the device moves Cutting out a longitudinal slot approaches the wall of the pipe to be punched and then it is returned to the starting position. The device is equipped with a device for the longitudinal displacement of the pipe with respect to the implement.

The disadvantage of the known device is that the result Slots have longitudinal shape, which makes the perforated pipe low strength and poor Has operational characteristics. In addition, the well-known device is in its design complicated.

The invention is based on the object of a To develop a device for punching drainage pipes, in which the execution of holes in the walls of the drainage pipes is ensured, which have no influence on the strength and operational properties of the drainage pipes, the device also being simple in its construction.

This object is achieved in that the setup for punching drainage pipes 7 represents a perforated pin, when bochen corrugated tubes, it is useful to round the working end of the pin.

BS is the material and the size of the pin so that elastic deformation of the perforated pin is ensured by a value which corresponds to the path which the tube traverses during contact with the pin.

The invention is explained below with reference to the description of an exemplary embodiment Drawings explained in more detail.

It shows: FIG. 1 an axial longitudinal section of the device according to the invention for perforating drainage pipes; 2 shows a working device of the facility, shown on a smaller scale; Fig.) A section II-II Fig. 1.

The device for punching drainage # raw- Ren contains a single or several working organs designed as perforated pins 1 (FIG. 1), the end of which is turned towards the pipe 2 to be perforated.

Each pin 1 is attached in e @@ e @@ slider 3 (Fig.1, 2), which is fixed in a radial groove Support 5 (Fig.1) arranged housing 4 is housed.

on cylindrical projection of the slider 3 is Roller O mounted, which with Profile groove 7 (Fig. 3) Face jaw 8 is in contact. The centering of the jaw 8 with the fixed housing 5 (Fig.1) takes place by means of Bushing 9, through the central opening of which the pipe 2 to be punched runs. Opposite each perforated pin 1 there are 9 openings in the walls of the socket for the perforated pin 1 to pass through.

The front jaw 8 is driven by the electric motor 10 via pulleys 11 and 12 of the V-belt drive, one Wave 13 as well Gears 14 and 15 driven. The gear 15 is the front jaw 8 attached.

The device for longitudinally displacing the pipe 2 to be punched represents two driver rollers 16, the drive of which can be switched kinematically with the electric motor 10 in the case of a device used for its own operation. Will the facility be in a used for the production of drainage # pipes, the known driver devices of the to serve.

The perforated pin 1 is made of spring wire in such a way that the ratio between its length and its diameter is in a range from 30: 1 to 50: 1. At the Punching smooth-walled tubes, the working end of the hole pin 1 is carried out in a cylindrical shape; at the When punching corrugated tubes, the working end of the hole pin is rounded off as shown in Fig. 2.

The operation of the device for punching drainage pipes is as follows. The pipe 2 to be perforated (FIG. 1) is moved through the central opening of the socket 9 by means of the rollers 16. The front jaw 8 is from the electric motor 10 via the Kell c V3 Ke: belt drive 11, 12, the shaft 13 and the gears 14 and 15 are driven.

During the interaction of the profile groove 7 (Fig. 3) with the role 6, the slider 3 (FIG. 1) is displaced in the radial groove of the housing 4. Included When the pin 1 approaches the tube 2 to be punched, it makes a hole and is returned to the starting position.

During the period in which the pin 1 is in contact with the pipe 2 running in the longitudinal direction and to be punched, the pin 1 is deformed as a result of the pipe movement and, thanks to its dimensions and the material, only in the elastic range and by a value that corresponds to the number four which the tube 2 passes through while it is in contact with the pin 1. This will make the execution of Holes in the walls of the tube 2 guaranteed.

When punching corrugated drainage pipes, it is useful to round the working end of the pierced pin 1, whereby the inaccuracies of the pipe shaft spacings, the speed errors in the longitudinal displacement of the pipe and the rotational speed errors of the front jaw 8 are compensated. Since when hitting the corrugation crest the pin 1 slides into the vertex between the waves, the above-mentioned errors arise Holes, which this facility, are round in shape and the permeability of the pipe on the pipe surface is more decentralized than.

in the case of pipes with longitudinal openings that are used when punching Pipes known setting @@ must be carried out. For this reason, higher quality of production and significantly better operating properties are the Drainage S. pipe secured .. The device according to the invention can be used both in a to the of drainage pipes as well can be used. Because the strength of the walls of drainage pipes when punching The device according to the invention is not adversely affected, the thickness of the pipe walls can be considerably reduced and the consumption of raw material per production unit can be significantly reduced as a result.

The device is simple in construction and requires operation not very high qualification of the operating team.

Claims (2)

Claims 1. Device for punching plastic drainage pipes, the at least one working body, which with a cam gear to approximate the Working organ on the wall of the pipe to be punched and for removing the device is equipped by the pipe, contains and a device for the longitudinal displacement of the Rohres in relation to the implement, which is not indicated that the working element is a pin (1), its dimensions and its material are chosen so that their elastic deformation is guaranteed by a value, which corresponds to the path taken by the tube (2) during contact with the pin (1) passes through. 2. Device according to claim 1, characterized in that the working end of the piercer (1? is rounded.