DE1752035C - Tube holder with cutting and cutting device - Google Patents

Description

6. Tube holding and chipping device according to 45
one of claims 2 to 5, characterized in that the holders of the spring and gas

claws (7, 8) at the end of the mandrel (1) self-supporting and adjustable lengthways on bolts (23) of the

The mandrel bearing (24) sit, the centering 50. The invention relates to a tube holding

by the claw position on the mandrel (1). tion and cutting device in the machining

7. Tube holding and cutting device after deforming tubes and subsequent cutting to length of the preceding claims, characterized on an automatic tube lathe at step, that in order to cut the tube circuit to length, the tubes in each case being picked up by rotating branches (26, 54) in the final station with a plate mandrel in a pushing-on station Disc (31) with cutting disc (32, 67) provided after machining in the individual stations which (32, 67) are pushed away again from the mandrel after the last operation by means of elan Pivot bearing (33) can be pushed onto the Tubentrennstellc.

pushes axially. The tubes coming from an extrusion press are

8. Tube holding and cutting device according to 60 on the thorns of a so-called tube-Drchauto claim 7, characterized in that the maten (multi-spindle machines) individually in a shark plate and cutting disks (31, 32, 67) pushed on at an angle in teposition, with in the subsequent direction Processing stations pivoting to the end of the mandrel (1), especially on the tube head are bar and taken from the tube rotation - a thread rolled and the inclined tube shoulder men will be. 65 turned or grooved and then the tube

9. Tube holding and chipping device is cut to the correct length according to the jacket. to one of the preceding claims, characterized for this purpose, it is known that the tube rotating marked, that the sliding claws (44) automatically feed the raw tubes

special end, tufts of feathers (57) in the conveying direction the tube remnants (54) are assigned, which in the cutting station also the Pivoting movements of the claws (44) when passing under elastic rotational bodies (68) To run.

10. tube holding and cutting device according to claim 9, characterized in that the side the sliding claws (44) under the spring action of the centrifugal force on the mandrel (1) lying longitudinal knife (47) are provided, which on the cutting station when undercutting their brackets of elastic Rotary bodies (68) perform cutting movements.

11. Tube hall and cutting device after Claim 10, characterized in that the sliding claws (44) as well as the longitudinal knives (47) in brackets on a cantilevered and longitudinally adjustable ring (61) at the end of the mandrel (1) can be swiveled and press down under the action of a spring or centrifugal force.

12. Tube holding and cutting device according to claim II, characterized in that the Sliding claws (44) and longitudinal knife (47) articulately interlock with pivoting mounting and counter-directed by means of protruding cams (51) when they pass under elastic rotating bodies (68) Perform movements.

13. Tube holding and cutting device according to one of claims 10 to 12, characterized in that that both the sliding claws (44) and the longitudinal knife (47) by means of adjusting screws can be adjusted for centering on the mandrel (1).

14. Tube holding and cutting device according to one of the preceding claims, characterized characterized in that the cut and scored tube remnants (26, 54) at the end of the mandrel against Inclined knives (22, 56) run up, which they cut open completely and for removal by the Release mandrel roll.

15. Tube holding and cutting device according to claim 14, characterized in that the Inclined knives (22, 56) with the sliding claws (6, 44) interacting spring tongues (7, 57) are upstream.

3 ⁴ _tondden

Fig. 1 y ^ J ^^^^^ S ^ u ^^ atai Tusteckt, which holding dome on a '· - "^ ¹ " * "" * **** * «« K * «*? *« ---

Step-switched RevoUerteller are arranged in a circle b ^^^^ SToST 'associated Abnet and are constantly around their own axis roue- F ι g. 3 des MütteBcnnra umu. ~ * e

transfer from one workstation to another. ·. _t ^ ^. Sidearm

Be found. Up to now, the tubes have been held on the thorns of the tube rotating car Fg4 and 5 ^ W * ™ ^ ™^ ^ for processing by dot tips skht teflwcee ~ J * Z £ ^ JFzS ** ™ ** which are located in the head To keep the fun of it in place, press in the tube from the inside and open the opening, refer to FIGS. 5 and 5

claw there. The sharp claws penetrate a further section view of Fig. 6. the deeper into the inner wall of the head opening and Fig-7 dea partial section

Tube shoulder, the thicker the chips the knife, e.g. B. Execution of the erfi

when turning or smoothing the tube shoulder, de-creasing and machining! __ "".

_n camouflages. The formation of chips is thereby uuavoid- After the / ^ f ^ S ^ S ^ T ^

Huh at least leave the claws more or x ₅ Fig. 1 and 2 is ^ ηιοΚτεαΚη ^ lemger deep notches in the inner wall. Tube 2 gee the «^» «ϊ °° ££ Κ ^ aniie-Sr ^S S _P ean attack and especially the danger. «J ™ * ™ J * £ g ^ _e ,, el- and medicine tubes intolerable, because there remain revolver plates 5. an * ^ hem ™ ^ ^K.

up to now, slightly small particles of the tube material of «rotatable and I specified ^ jgg ^ £ tube 2 cut and ment loosened chips in the!» new. Sm.Ma.nl ^ .. n ^. · »* ·· - · _ _ _{Manwle nd} . to the

the lube stick and "ground only during filling and mn her later f ^{ut" nn} ™ ^s "fj springy subsequent deflation of the tube free. tubes rest simultaneously em Stuck under Dumea

To solve the problem, device slides 6 have already been pushed. ^^^^^ fl.egen. _tU n, en for holding tubes when they are machined, ₅ scha -f. ^ * ^ - ^ ^ ^ Smi lche surrounding deformation and / to cutting to a ^^^^^ l ^^^ Schieber6 are TuKn lathes practice with step circuit, the later ^ '^' ^ ff ic Tubenmantel2 still Ί. take part in each of the surrounding domes. In addition, the jutaun «^ ₍

A-iner. Processing station are held, in front of a sharp-edged Oahei β against slee. which is characterized by the fact that 30 g ^ed ™ ^cku Ρ-Λ-rhänder 7 are on one

beim'Aufschieben on the mandrel, the open, ERS The spool 6 and ^{spring clip} ^ ^d "V" ⁿ J, _pivoting.

The named tube ends are fixed on inclined wedges for the purpose of shark cams 9, the "pin" 16 weight run up and in the final station for disconnection: J """ ¹ ™ ^l Sen Dockens U engage the tube parting knife. Here which in the groove of a J ^eite J ™ ¹ ^ _{u xhei} e & \ »r

The present invention is characterized by its full responsibility

this by the fact that the tube ends to be cut to length are on the one hand on a ^ "^^ arf e'niuSen

for mounting in the processing stations at the ^ «^^ J ^ J ^ SaSin thread on the

Pushing on resilient sliding and holding claws un-?} ^ Tn " accounts rübe16 the

terlauf, which in the cutting station alternately bolts of a ^ P ^ h ^ ube ¹⁶ d _Mimahmering

Pushing movements leading to the mandrel-relaxing end of the 17 carry out a J "g" ^ _d " _τ ^ ρ _Γ ig pasiend, in such a way that the remains of the tube are pressed afterwards, .η ^« ^ TderichSeAanttÄ · and

Underlying their mounts by elastic Rota-Ring 21 meh rereben aura _{rf w will}

tion bodies against spring action alternately the DmI ^ haha. The M Un ^ _ßoizen

Execute swivel movements to the end of the mandrel. 55 through in ^ their [^ _ ™ Nahrungsmittel f _{M rigid connections,} see above

Also, the slide claws msbesondere, 12 "" t "? M £ n ^ pann _{Cathedral, tubes of}

at the end, tufts of feathers be assigned, which in that, be ^ ™ ^^ ,,! ,, _{e to} edit and to

Cutting station also the swiveling movements of the ^^^ lj ^ d _now ^E _{dic so} designed holding

Claws when going under the elastic rotation holderJ «™ · Jj ^ of _{the tube} begin without any

run body, with the side of the sliding claws 60 "" e ^ A'J'SSeiSngutattoin running through the

under spring action or centrifugal force on the mandrel anl.- actuation al ^ ^ear ^ | _{de here from me} hrercn

Ending longitudinal knife can be provided, which tube ^ 2 an_ih ^ m1 ot ^ enen driving ring The tube 2 can be adjusted on the cutting station when it passes under its holding "^ ™ ^ ™ ^ d

rests of elastic Rotat.onskorpcrn Zerspan- 19 ™ Z ™haben * _r ™ ^a _{pKSSCny is} the holder in the

^b Tu! SV _g sS: nder tube holder and Zer- W o ^ ^^ * ^^ ^^ t ^^^^^ S ¹ ^ SSÄfl »runs against the cam · and

swings it out briefly by an angle of a few degrees. As a result, the slides 6 hook even more firmly into the remnant of the tube, which is separated from the tube jacket, and slide the residual ring 26 on each Approach to the rubber ring 25 by a few millimeters in Direction of blades 22.

During a standstill period, the mandrel 1 performs at least 15 revolutions. The sliders 6 so the remaining tube rings 26 are moved a little to the left during each stepping pause Slide jam. As a result of the meshing of the two cams 9 and 11, the fork 8 moves to the left, while the slide 6 return to their starting position. By doing this If both movements overlap or act against each other, the remaining tube pieces 26 are safe shifted jerkily against the blades 22. The spring strips 7 prevent the remnants from being 26 clamp on the mandrel 1 and help to push them onto the blades 22 at the same time, whereby they are machined and the remaining parts fly out of the holder. The present bracket represents a built-in element , which can remain the same for all tube diameters and is shown on the milk ring 19 in must be installed in the appropriate number.

The in F i g. 3 shown cutting device works here as follows: After passing through all processing stations on the high-performance tube rotary haulomalen the tube 2 has to be cut to the required length. Still with all of them Existing devices for this purpose are fixed against the tube jacket on jacket thickness Pointed knife out, the edge of which becomes blunt after a few hours of operation and the Then just scratch the coat. The tube lathe must therefore be used several times during a work shift be stopped in order to regrind and readjust the parting blade.

In contrast, disks running up against the hardened mandrel 1 at an angle are used here to cut the tube jacket to length. The disc 31 wedged on the freely rotatable axis 30 presses with a blunt edge in the desired dividing line against the jacket of the tube 2. A thin, concurrent, hard steel disc 32 with a slight pressure rests against the disc 31, the diameter of which is slightly larger. The edges of the two disks 31 and 32 run in the same notch in the tube jacket and their contact pressure can be adjusted. The thin disk 32 normally extends over the periphery of the disk

31 addition.

When the rotating dome 1 with the clamped tube 2 ran under it, the thin disk 32 has already pressed a slight notch into the tube jacket, which already happened when it entered the standstill position. In the same notch, the rigid steel disk 31 is inserted, while the disk

32 initially remains in the same notch path. After the disc 31 does not push through the tube jacket, but only holds it to size as a result, the thin disk 32 pushes the rotating tube wall through to the dome surface and extends the notch until the tube jacket is torn off by placing it on the smooth surface with blunt sharpness Dom 1 slips as a result of its inclination and bends slightly in the process. This results in a quick tearing of the remaining piece from the tube jacket, while the disc 31 then smooths the cut by now penetrating down to the surface of the mandrel itself. The disk 32 is able to work in the same notch as the disk 31, despite its larger diameter, because it is centered with a flexible rubber ring 33 and can be moved coaxially about its axis of rotation. The coaxiality is only slight with regard to the wall thickness of the tube, the disk 32 automatically adjusts to it and, above all, when it is hollow, does not have to be reground for a long time.

The free axis 30 is held rigidly by means of bearing 34 in the pivot point 35 and can or only needs to be changed and readjusted as effectively as desired in the inclined position. The tube jacket can be cut to length and the remainder of the tube can be machined at the same work station. If such an arrangement is made, the thin disk 32 effectively pushes the separated tube remainder under or into the holder, so that the function of the fork 8 can also be omitted.

According to the embodiment according to FIG. 4 to 6 is on the rotating mandrel 41 the Tube 42 according to the first embodiment against an adjustable dome cap with fuse plucked on tightly by tensioned disc springs while the stepped revolver plate 43 is just at a standstill, in which several mandrels 41 rotate permanently. When automatically plugging on, the tube 42 with its jacket end to be separated later, the Tube remnants, at the same time pushed a little under the spring-loaded slide 44 around the pin 45 is pivotably mounted and by means of the screw 46 against the tube jacket 42 as required can be pressed.

When it is plugged on, the tube 42 also undergoes the chipping knife 47 accordingly F i g. 4 and the spring bundle 48 made of thin steel leaves, which is now in the longitudinal direction

Hold the tube jacket end that has already been slit by pressing it against the mandrel 41 as well. The two cams 50 and 51 pivoted around the pin 49, in which the chipping knives 47 are clamped with the bundles 48 by means of the screws 52, mesh with one another with a tooth so that the pressing force of the chipping knife 47 and the spring bundle 48 against the tube jacket remains the same at high speed of the dome 41, because the cam 50 has compared to the cam 51

a lower moment of inertia.

In order for the Zerspanungsmessei 47 with the spring bundles 48 to always cling fully to the jacket end of the tube 42 when the diameter of the tubes 42 differs, they are held only resiliently by means of the screws 52 between plate springs 53. The including tube holder in FIG. 4, the direction of rotation of the dome 41 shown is slightly braked, especially when the tube 42 is being machined, i.e. against its rotation

This means that it rests on the end of the tube with a sharp edge ": spring bundle 48, pivotable about the pin 49, pressed even more firmly against the chipping knife 47 and thus also against the end of the tube jacket, with which the endeavor of the tubes to rotate on the dome, blocked. This blocking is all the more int.

is stressed, the ends of the spring bundle 48 force themselves all the more strongly under the pivot point 49. The tube remnants 54 migrating in the direction of the root of the mandrel 41 are already before being cut to length of the tube jacket partially severed in the pushing direction. The blades clamped in the clamping ring 55 56 probably have the task of further shredding the remaining tube residues, mainly however, to strip or lift it off the mandrel 41 so that it is thrown away by the driving wind and the centrifugal force will. The tube remnants 54 accumulated on the mandrel 41 are after they have been separated from the tube jacket, which has been cut to length, additionally by the steel straps attached to the hub of the slide 44 57 pushed against the blades 56, which increases the reliability of the machining.

The slide 44 is held with the pin 45 in steel or hard PVC segments 58, which can be displaced on the connecting bolt 59. By means of the screws 60 overrun rings 61 are attached to the segments 58. The adjusting rings 62 on the connecting bolts 59 hold the "the 63 against the segments 5"
zen 59 are on the one hand in
and thus in the
keep them free
the tenons 49

Embodiment. The freely rotating rubber roller 68 is against the run-up sub-rings 61 as well adjustable against the extended cams Sl. Correctly adjusted, it pivots the two cams 50 and 51 just a little inward at the same moment as they pass the disk 67, whereby Move two chipping knives 47 together with spring bundles 48 approximately from the mandrel 41 and the remainder of the tube.

A further simplified embodiment is finally shown in FIG. 7 shown. In this case, when the tube is plugged in, there is no machining of the end of the tube and the actual machining of the remainder of the tube on sharpened blades 56 as shown in FIG. 5 left alone, here a tip lever 71 pivotable around the bolt 70 can carry out the conveyance of the tube remains by pressing the slide 72 fastened on its back resiliently against the tube wall, thus hooking it into the tube ring with increased intensity and removing it by the necessary amount of a few millimeters to the left in the direction towards the blades 56, as in FIG. 5 shown, pushes thing left to conveyor £ 3ΐ · «· .ο> ... -U- the by means of the steel sheets 73rd The tip lever 71 is supported with the pin 70 in a fork eye 74 on the other hand, which in turn appears to be fastened to a radial groove of the ring 75. the

· ■ »" - τ ~.: _ J ...: - 1—: " u ui""Aucfiih-

64

_> Radial groove of ring 75 fastened e _t . _{Ri 75 is described> as in the previously} g _e Henden Ausfühp ^^ J ₄ ^ SJ spring bundles approximately example, with the Verbindungsbolinfontier. shSST ^ connecting bolts 59 protrude zen 76 cantilevered by a flange, with over the prom of the ring 65 around the width of the cam 30 of the mandrel 77 on its bearing in a turret. dir is mounted here with a larger hole distributor.

I found Sam t in its swivel range. The hard metal head of the slide 72 is in a

is provided and intestine . »^ ° ζ _outside r on the groove of the ring 75 and is slightly toothed,

is bordered by the segments 58 sma ^ ^^ _{Αηοτ yon several sokher schmakn}

Bmdungsbozen 59 ^ still arf to « ^ ^ _M _ _{Hallerungen in the} radial grooves of the ring 72 the

Ring 65 guided so that they oei α ^^ _{Dkhb? Gd {dm Schie}

h hr Location: geraie

it n.c.

not get out of its position.

With the present construction ^ conditionally required

Cutting to length.

tion of the tube remainder by means of the a ben 67 during the standstill in the same Sta-Γίοη takes place so that the axial sdndenz the Cutting disk 67 in the direction of the Sem «*. · ~ —Sb-S and the conveyance of the tube remains 54 against the blades 56 is faster. Trpnn «-heihe

During the cutting to length by the cutting disk 67, the rotating tube holder passes under the Rubber roller 68. similar to the previous one

- _o - - - ___ ^ j. ^

Pressure screws 78 against the sliding material sheet 79 glued to the slide back 72 Press the inserted end of the tube so that the torque required for machining is applied

is, in order to be safe from the mandrel 77 by friction to be transferred to the tube. If the requirement is met, cutting to length with dei Washer 80 and the rolling under of all tip levers 71 under the rubber roller 81 in the same standstill

to arrange the position of the revolver plate is a matter of urgency Safe crawling of the tube remains against the machining to be fastened in a ring on the mandrel 77 shovel.

1 sheet of drawings

209 683 /:

Claims (5)

Patent claims: 1. Tube holding and cutting device for »metal-cutting deformation of tubes and subsequent cutting to length using automatic tube lathes with step switching, characterized in that that the at the respective processing cathedral (1, 41) pushed-on ends of the tubes (2, 42) to be cut to length for holding in the processing stations resilient sliding and Holding claws (6, 7, 44, 57) are pushed underneath, which in the cutting station alternately to Perform mandrel-clamping leading pushing movements »to push off the remains of the tube (26, 54) after cutting to length towards the end of the mandrel. 2. Tube holding and cutting device according to claim 1, characterized in that arranged by means of brackets at the end of the dome (1, 41) this prepared spring claws (7) which are each on both sides of fork claws (8), which are guided by means of further brackets, be encompassed. 3. Tube holding and cutting device according to claim 2, characterized in that the Spring claws (7) and the fork claws (8) for longitudinally moving the tube remains (26) in the cutting station with their brackets to alternate pivoting movements to the end of the mandrel against the spring action of elastic rotating bodies (25) are overrun. 4. tube holding and cutting device according to claim 2 or 3, characterized in that the brackets of the spring and fork claw snaps (7, 8) interlock in an articulated manner with pivoting mounting and a spring screw bolt (13, 15, 16) for adjustment on the mandrel (1) is available by means of a connecting piece (11). 5. Tube holding and cutting device according to one of claims 2 to 4, characterized in that that both the spring claws (7) and the fork claws (8) for longitudinal conveyance and are slightly toothed for marking the cut-off tube remnants.