DE2131362A1 - Device for punching a corrugated tube made of plastic - Google Patents

Description

Device for punching a corrugated tube made of plastic

Priority is claimed due to sponsor Netherlands
₀ 70.09502 of June 26, 1970

The invention relates to a device for punching a corrugated tube made of plastic that is perpendicular to the tube axis has standing self-contained corrugations.

The invention also relates to methods of punching
of such a corrugated tube "

Devices and methods for punching a corrugated tube whose corrugation runs helically are already known. On the other hand, there is one that is perpendicular to the pipe axis
Corrugated tube is also generally known. Now, however, the known device cannot be used for punching a corrugated tube with straight corrugations, such as the one according to the invention.

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is intended. In the known devices is im Generally, a nut that fits around the pipe is used, the screw thread of which corresponds to the Eiffel formula »By Turning the nut will move the pipe in the direction of its axis, while the nut is also on the punching device is coupled.

^ The invention is based on the object of a device create which is probably suitable for a tube with straight corrugations and also has some special advantages · The invention For this purpose, the device is equipped with the drive, which leads through the tube and cooperates with the corrugations coupled links and a number in a wreath around the pipe perpendicular to the pipe axis movable Hole punching equipped their punching movement by a sleeve rotatably mounted around the rim with a number of Squat is controlled, which can work together with the punching pin, which sleeve is also coupled to the drive, the arrangement being such that each stamping pin intermittently cooperates against the pressure of a spring can be printed through the pipe with a crouch, the coupling being such that the holes can be placed between the corrugations without the support of the inside of the corrugated tube in the punching area.

With such a device one is able, among other things, next to each corrugation a number regularly on the circumference of the pipe to punch distributed holes. A requirement that should of course be met is that the coupling between the bushing and the members passing through the pipe is such that after each perforation

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processing the pipe is moved up by a corrugation before a new hole processing takes place. The device also has the advantage that the number of cams and punch pins and the way in which the cams and punch pins are distributed over 360 are arranged in the rim can vary «, depending on the above variables, the transmission ratio between the liner and the pipe passing through Links are chosen in such a way that the holes are made according to the desired pattern. It is possible the holes to be placed in one or more straight rows between successive corrugations, while it is also possible to make the holes in one or more helical rows around the circumference of the pipe. Said rows naturally extend longitudinally over the pipe. Another advantage of the device consists in the fact that with a selected punched link - the punching pegs enclose fixed angles with one another - However, the pattern of the holes can vary. The latter is possible in a simple manner with the device in that the cams are attached to a removable ring that can be replaced by a ring Cams are distributed in a different way and / or in a different number over 360 °.

A structurally simple design of the members leading through the pipe can be obtained if the same is made from one or more gears engaging the tubular corrugations consist of a part of a driven, also forming the sleeve driving shaft, worm wheel are driven and if the worm wheel and the gears have the same tooth pitch as the corrugated tube · It will be clear that with one turn of the

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driven shaft pushes the corrugated tube up by a corrugation and the sleeve is rotated through an angle that depends on the transmission ratio between the shaft and the bushing is dependent be set up so that after each revolution of the shaft following a punching operation, the bushing over such a Angle is rotated so that a new punching process follows »So holes are punched next to each corrugation · It should be noted that that not necessarily the same number of holes are punched and / or the same number of holes next to each corrugation are attached to the circumference of the pipe according to the same pattern.

According to a preferred embodiment of the invention, in each of a number of vertical planes on the pipe axis, one or more dancers with one in each plane or several associated cams attached. Sometimes this measure will have the advantage that more punch pins than as far as the distribution of space is concerned in one level could be used. This can increase the speed with which the pipe is moved and / or the number of punched holes per corrugation can be increased. Also is then In certain cases, the wear on the individual punching pins is lower or the speed of rotation of the bushing more favorable in relation to the linear speed of the liner This can also offer advantages in connection with the carrying, is the spring that is supposed to press the punching pin again after the punching. This inertia limits the speed one with which the liner can rotate and also limits the number of cams that per time unit a maximum of one punching pin can operate,

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It should be noted that when punching pins are used in a number of levels between two punching operations in one level, the corrugated tube can move up by more than one corrugation, because the corrugations that are ignored by punching pins are punched in other levels _e Of course, requirements should be placed on the mutual distances of the planes as a puncture of, among other things, the distance between two adjacent corrugations, the linear speed of the corrugated tube and the time elapsed between the various punching operations. The above-mentioned transmission ratio and the location of the punch pins and cams, as well as the selected number of levels, punch pins and cams are important.

May be according to an embodiment of the device which drilled for a relatively or very regular patterns may be in any plane χ kinds of positions of the bushing possible in which each type in v_ positions _z cam with _z punching pins cooperate, with each type v_ and differerieren z_ , so that in this plane the punching pins per revolution of the bushing and per type of position at χ different times punch holes next to v_ different corrugations, the cams and punching pins are arranged in such a way that the time segments between the successive v. Points in time are of the same length and the transmission between the bushing and the gears is such that the corrugated tube moves up by y_ corrugations once or several times per revolution of the bushing. The rule of thumb is that in a certain plane in a positions of the bushing, b cams of this bushing work together with b_ punching pins, which results in & χ h holes in a punching operations.In those cases in which there is no optimal regularity in the arrangement of the punching pins and the There are cams, it is possible in other positions

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of the rifle t) Crouching of this rifle also use the punching pins, which results in holes in the punching operations. Depending on the regularity, other positions are also conceivable in a number of cases. Of the letters mentioned above, a. and £ be the same although this is not required. Of course, b and d are not the same, because in this pail £ and a can be added together

In the above situation it is such that or, for each punching process, _b and ά holes are punched. The times of these punching operations do not coincide. It becomes clear that if in a certain plane η cams and jd punching pins are present per revolution of the bushing η χ jd holes are made in a currently unknown number of punching operations, the latter number of punching operations being a maximum of η χ £.

It should be noted that in the last-described embodiment of the device, the points in time at which the punching pins attached in a plane carry out a perforation are evenly distributed over one revolution of the sleeve. One however, such exact regularity is not an absolute prerequisite. When the irregularity of the distribution the points in time have a certain regularity, the irregularities of the points in time can also be irregular times of the punching operations of the punching pins from other levels complement each other and still together create a regular cycle of punching operations. In the latter case, too, the entire series then runs from Punching operations for one revolution of the liner are generally regular.

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On the other hand, it will also be clear that if on two different levels there is a phase difference between those involved There is a cam - all of which are connected to the same Rotate the bushing - the distance between these planes will not be a whole number of corrugations. Such a phase difference can be of importance if it is undesirable to perform punching in different planes at the same time to be carried out.

In one embodiment described above, there were χ kinds of positions of the rifle in which each type in v. Positions _z Cams work together with _z punch pins. Preferably is now the number of positions for all types of positions each Level same. Punching is performed in each position, so the number of punching operations is common to all Types of positions is the same. So the transfer ratio is based on a simple premise because the Number of punching operations a direct measure of the need to push the pipe around one or more corrugations is.

The number of positions per type is also preferably the same for all levels, as a result of which the same for all types of positions Punching operations are carried out and a regular pattern of holes is created.

If the number of types of postures is the same for all levels, there is great regularity in the Effect. Advantages inherent in a high degree of symmetry are obtained when equal at all levels Punch pins and / or cams are provided. In such a pail it is still possible to transmit in this way. to choose that, in addition to all corrugations, the same number of holes

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can be punched, with a less optimal use of the punching pins and / or cams, which in certain However, this transfer can also be selected in this way

An "optimal symmetry arises when in each of η in each other equal spacing, planes standing vertically on the pipe m stamped pins regularly distributed over 360 ° and jd m cams regularly distributed over 360 ° are attached, whereby the transmission ratio of the lead-through elements: Cam rings 1 / n χ m χ ρ_ is «

The invention also relates to a method for punching a corrugated pipe as mentioned above, which method is characterized in that the pipe is moved linearly with the aid of driven pipe bushing members cooperating with the corrugations and vertically with a number arranged in a ring around the pipe The punching pin standing on the pipe axis can be punched, the periodicity of which is controlled by a rotating sleeve mounted around the rim with a number of cams that work together with the punching pins involved, which sleeve and the members passing through the pipe are also operated by a common drive, the Arrangement is made so that each stamping pin is pressed in an intermittent manner against the pressure of a spring in cooperation with a cam through the tube, the coupling being designed such that the holes are made between the corrugations.

This process creates a corrugated tube that is perforated according to a more or less regular pattern «

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The stress also extends to one with such Pattern of corrugated tube provided with holes · The Er ~ The invention is explained below with reference to the drawing showing an exemplary embodiment in a sketchy representation. It demonstrate:

FIG. 1 is a side view, perpendicular to the axis of the corrugated tube, of the device;

Figure 2 is a vertical section through the axis of the corrugated tube through the punched members of the device according to Figure 1 j and

FIG. 3 shows a vertical section along the line III-III in FIG.

The device (see FIG. 1) has a frame on which a drive shaft 4 is mounted in the plates 2 and 3. One of the bearings 5 can be seen in FIG. The shaft 4 rotates directly above the horizontal frame plate 6 in which a slot 7 is provided for receiving a wheel 8. The wheel 8 is driven by the electric motor 10 with the aid of a chain or a rope 9. On the shaft 4 sit or a worm wheel 11 and a gear 12 for driving the pipe through members 13 and the punched members 14 on _e

The feed-through members 13 contain two gears 15 whose tooth pitch is on the one hand that of the worm wheel and on the other hand that of the corrugated tube 16 is the same. Under the division of the corrugated tube is the distance between two adjacent corrugated peaks Understood. The gears 15 also work with the worm wheel 11 and with the corrugated tube 16

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The punched members are shown in particular in Figures 2 and 3 and essentially have two sub-parts: a rotatably mounted sleeve 17 with the gear 18 which cooperates with the gear 12 of the driven shaft 4 and as the second lower part, an inner one firmly attached to the plate 2 Bushing 19 »which is attached directly around the corrugated tube 16 within the bushing 17. The outer sleeve 17 is mounted on the inner sleeve 19 with the aid of both bearings 20. P In the vicinity of one end of the fixed inner sleeve 19, six punching pins 20 or 21 directed against the corrugated tube are guided radially into or out of the radial bores 22 and 23 of the fixed inner sleeve 19. The punching pins 20 and 21 respectively lie in two different planes perpendicular to the corrugated tube _o As can be seen from Figure 3, the punching pins 20 and 21 are all set up in a wreath around the corrugated tube and they mutually enclose angles of 30 °, for a total of six Punch pins are provided. On each level the punching pins 20 and 21 enclose angles of 120 °, so that the punching pins 20 are offset by 60 ° with respect to the punching pins 21 - viewed in the direction of the corrugated tube displaceable cylindrical shaft which has a cylindrical punch 24 of smaller diameter at its front end and a forged fork 25 of larger dimensions for receiving a follower wheel 26 at its rear end. Between each fork 25 and the fixed inner sleeve 19, a spring 27 with suitable leather characteristics is attached.

Two cam rings 28 and 29 are attached to the rotatable outer sleeve 17. The cam ring 28 is in the plane of the Punching pin 20 with three evenly distributed over 360 °

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Cam 30 is provided and the cam ring 29 is in the plane of the three punching pins 21 with three evenly distributed over 360 ° Cam 31 provided · The cams 30 and 31, viewed in the direction of the corrugated tube, are in the same way like the stamping pins 20 and 21 arranged offset from one another.

The inner diameters of the cam rings 28 and 29 are such chosen that uie punch pins do not touch the corrugated tube, but the punch pins as soon as the follower wheels 26 touch the cams perform a punching process «

The distance between the two levels in which the punch pins 20 and 21 are set up is an odd number of Draw the division of the corrugated tube and, as shown in Figure 2, in this pail five times the division. The transfer ratio between the gear 18 of the rotatable sleeve 17 and the small Zahnraaaer driven shaft 4 is 6 ί 1.

The device works in the following way: the driven shaft 4 in turn drives the gears via the worm wheel 11 15 so that when the gears turn in the specified direction (see Figure 1), the corrugated tube turns also moved linearly in the specified direction.

At the same time, the rotatable sleeve 17 is driven so that the cam rings revolve around the stationary stamped pin ring turn. The device is now designed so that the pipe bushing members are fully in phase with the stamping members are, i.e. when the two levels in which the punching pins are placed halfway between two corrugations of the corrugated tube

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lying, the punching pins 20 have just come to work with the cams 30 and therefore the punching pins 21 have come to work with the cams 31 behind them. At this moment, punch processing is being carried out. It will be clear that a total of six holes are punched for every 1/3 turn of the rotatable sleeve 17, namely three holes between the one pair of corrugations and also three holes between the other pair of corrugations. One third of the revolution of the | Large gear 18 means - because of the selected transmission ratio - for the small gear 12 two revolutions. The worm wheel 11 is thus also execute two revolutions, so that the gears 1 5 will move up in- the direction indicated by two teeth, and therefore the corrugated tube 16 will likewise move SWEi corrugations in the direction indicated.

The device is therefore able to punch three holes next to each corrugation, with the tube ending up with six straight Will have rows of holes that are evenly distributed around the circumference of the pipe. In each row there will be holes overturn one corrugation at a time.

It should be noted that the direction of the gate can be easily rebuilt. For example, it should be mentioned that if the two cam rings 28 and 29 by a Noeken ring with double width and with six cams regularly distributed over 360 ° are replaced, a hole pattern is obtained that is approximately the same The above pattern corresponds to the number of holes, however, is twice as large. Half of the holes will then lie between the corrugations and the other half on the top of the corrugations. Is the latter property for a corrugated tube not desired, the above-mentioned transfer agreement

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ratio can simply be changed by making the bearing of the worm wheel 11 twice as large.

It should also be noted that regardless of the effect of the entire device, the speed with which the Hiffelrohr is passed through the device with the aid of a speed adjustment device 32 can be changed.

It is pointed out that, according to the device shown, the punching means in the area of the inner sleeve 19 must be brought into action. However, it is also possible to have several punching means at the same time outside the sleeve 1, in order to bring the circumference of the ear to act evenly distributed.

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Claims (12)

AH Expectations Device for punching a corrugated tube made of plastic, which has self-contained corrugations standing perpendicular to the tube axis, characterized by members that work together with the corrugations, are coupled to the drive and lead through the tube and by at least one member that is attached in a ring around the tube and that is perpendicular to the tube axis , movable, punching pin whose punching movement is controlled by a bushing that is rotatable around the rim and has a number of cams that can work together with the punching pin, which bushing is also coupled to the drive. " the arrangement being such that the punching pin can be pressed intermittently through the tube against the pressure of a spring in cooperation with a cam, the coupling being such that the holes are made between the corrugations without isaaerfealfc &&& - 2. Device according to claim 1, characterized in that that the members leading through the pipe consist of one or more gears engaging the pipe corrugations which are driven by a cable of a driven worm wheel which also drives the bushing and forms a shaft, the worm wheel and the gear wheel having the same tooth pitch as the corrugated tube, 3 · Device according to claim 1 or 2, - characterized in that that in each plane of a number of planes perpendicular to the pipe axis one or more punching pins with one or more associated cams attached to each level, 109853/1742 46 * 4. Apparatus according to claim 3, characterized in that in each plane χ types of positions of the sleeve are possible in which each type in £ positions ζ crouch with ss punching pins work together, whereby each type v. and jz can differ, so that in this level the punching pins punch holes next to £ different flutes for each rotation of the sleeve and for each type of position at £ different times, while the crouches and punching pins are arranged in such a way that the time segments between the successive times are of the same length and the transmission between the bushing and the gears is such that per revolution of the bushing, the corrugated tube moves up one or more times by v_ corrugations. 5. Apparatus according to claim 4, characterized in that the number of positions for all types of Positions per level is the same. 6 · Device according to claim 4 or 5 »characterized in that that the number of positions per species is the same for all levels. 7. Device according to claims 4, 5 or 6, characterized in that for all levels the number of Types of positions is the same. 8. Device according to one of claims 3 to 7, characterized in that the same number of punch pins in all levels and / or crouching are attached. 9. Device according to one of claims 3 to 8, characterized characterized in that the transmission ratio pipe lead-through members: stamped members such with respect to the 109853/1742 4L mutual spacing of the levels with punched pins, the division of the corrugated tube and the number of cams and punched pins and the type of distribution over the planes and 360 ° is chosen so that next to all corrugations the same number of holes can be made. 10. The device according to claim 9, characterized in that in each of η at mutually equal intervals Planes perpendicular to the pipe axis m regularly ψ stamped pins distributed over 360 ° and p_ times m regularly distributed cams over 360 °, the transmission ratio of pipe lead-through members / collar rings is l / n.nu £. 11. A method for punching a corrugated tube made of plastic which has straight corrugations, characterized in that that the pipe is linearly driven by means of driven pipe bushing members cooperating with the corrugations and a number of stamping pins arranged in a ring around the pipe and standing perpendicularly on the pipe axis Performing punching allows their periodicity to pass through There is a rotating sleeve attached to the wreath a number of cams cooperating with the punching pins involved is controlled, which sleeve and which High executive members, also from a common one Drive is actuated, the arrangement being made so that each punch pin in intermittent Way is pressed through the tube against the pressure of a spring in cooperation with a cam, wherein the coupling is designed in such a way that the holes are made between the corrugations. 12. Corrugated tube made of plastic marked with straight Elffein by mounted next to each corrugation 109853/1 742 Obtaining holes by means of the method according to claims 11 or mounted in a device according to one of claims 1 Ms 10. the applicant: Meissner & Bolte Patentanwälte Bremen, June 23, 1971 Applicant; Industriele Onderneming Wavin Έ.Υ. (a Dutch A.G.) Händellaan 251, ZTOLLE /! The Netherlands 1 09853/1742