DE1452374A1 - Clamping device for a strand pull-out device on metal extrusion presses - Google Patents

Description

145237A

Lips N.V., Drunel ^ üöliand ΐΛ. 12. 19β5

Company Hydraulik G.m.ütH., Duisburg Do / Me - H 533

Clamping device for a strand pull-out device on metal extrusion presses

The invention relates to a clamping device for a strand pull-out device on metal extrusion presses with a clamping force exerting a clamping force on the pressed profile to be extracted, which in the opening sense is carried out by a linkage movable and is otherwise freely pivotable about an axis.

In the known strand pull-out devices that either a priced line or in the case of multi-core output · » Press several strands soon after leaving the die and grasp him or her at press speed. and Pull excess force onto the storage bed, one helps using one or more pliers as a clamping device (DBP 878 626 and USA patent 2,893,552).

The tongs either attached to a slide or engaging in an endlessly rotating means of transport is bound to a specific position in the transverse direction to the strand exit direction.

If the strand exiting the extruder does not go exactly in the direction in which the tongs are, complies, cumbersome handling is necessary to bring the end of the strand into the position in which it should be clamped.

In addition, the known pliers are not suitable for gripping profiles of any cross-section.

909807/0294

- 2 - lh. 12th 1965

Thu / Me - H

The object on which the invention is based exists in providing a jig, the extruded profiles any transverse sciinitts detected with a relatively large scatter range of the strand exit direction and harnessed. Furthermore, the clamping device is able to handle several strands in the case of multi-core extrusion clamp at the same time, so that they can be pulled off onto the storage bed with pressing speed and excess force are.

According to the invention, this is achieved in that one is free oscillating jaw is used, which is held almost as wide as the storage bed. The jaw is arranged on a shaft, which in the sense of opening and closing the jaw by a tensile force standing lever linkage is rotatable. In the opening sense, the clamping jaw is driven by a driver of the lever linkage, which engages on a nose of the clamping jaw, pivotable and in the closing sense is the one to be pulled out Profile between the freely swingable clamping jaw and clamped to the base of the fixture frame.

Freely oscillating clamping jaws are known per se in stretching machines and draw benches. Element protection will not claimed.

According to a further feature of the invention is the clamping jaw with a jacket made of flexible material, such as. B. asbestos, lead or similar heat-insensitive material, disguised. Due to the jacket, the clamping jaw of the clamping device is able to hold several, if necessary To clamp profiles of approximately the same horizontal position between themselves and the base plate of the device frame. 909807/0294

"BAD ORIGINAL

iA. 12. 19C5

Thu / Me - H

According to a further feature of the invention, the clamping jaw is adjacent in numerous, with little play arranged slats divided. Through the laminated Clamping jaw, the clamping device is able to hold several profiles with widely differing profiles to clamp horizontal position between itself and the base plate of the device frame.

The driver of the lever linkage, on which the clamping jaw or the clamping jaw lamellae rest by means of a rabbit when they are not in the operating position, is preferably designed as a rod, the two rotatably Lugs fastened on the shaft on both sides of the clamping jaw or the clamping jaw lamellae connects with one another.

Preferred embodiments of the invention are shown in the drawing.
Show it:

Fig. 1 the scheraatic arrangement of the disruption-Aus ^ iehvorriehtung,

Pig. "ei the clamping device with a covered clamping jaw and the associated lever linkage in section AA of the Pig.;

! 'ig. > the jig according to FIG. 2 in Arrow direction seen,

Pig. 'i the clamping device with laminated clamping jaw and associated lever linkage in section BB of pic'O ₃

Pig. j the jig according to Pig. 4 seen in the direction of the arrow.

The iii pi j. I illustrated strand separating device o is left out of the endlessly circulating train

BAD ORK31NM-

909307/029 Λ - > \ -

- 4 - December 14, 1965

Thu / Me - H

means A and the carriage B attached to it the clamping device C for extruded profiles P. The traction means A in the form of a chain or the like Means is housed within the support structure D for the guideway E on which the carriage B is moved rolling. The supporting structure D is attached to the gallows (not shown). The guideway E is located above the discharge table F, which is connected to the extrusion press G at the rear.

The jig C consists of a rectangular one Frame 20, 22, which is fixed under the carriage B. The horizontal base plate 21 is around a certain, selectable dimension below the main press axis.

Transverse to the main press axis is in the jig according to FIG. 2 and ^ within the frame 20, 22 on the In the frame mounted shaft 2, a jaw 1 is arranged so that it can swing freely.

The clamping jaw preferably has the shape of a segment of a circle. The pivot point is eccentric so the jaw can swing freely.

^{Furthermore, a tab 3 or ^ 1} is attached to the side of the shaft 2 next to the clamping jaw 1 in a rotationally rigid manner. Both brackets are connected to one another by a rod 4. The rod is provided as a driver for the clamping jaw 1 so that it can be pivoted in the opening direction. For this purpose, v / the jaw 1 eist a nose l ^f, which rests against the rod 4 in the rest position.

909807/0294 - 5 -

- 5 - December 14, 1965

Thu / Me - H

Mile 2 stored in frame 20 is on one side led out of the frame. On this end of the shaft, a lever 5 is rotatably attached to which The end 6 facing away from the shaft 2 is provided with a hub 7 in which a bolt 8 is arranged. On the bolt 8 engages the linkage lever 9, which is hinged to the Fork lever 10 is connected.

The linkage 9, 10 is hinged to an angle lever 11, the. is rotatably attached to the carriage B. The journal is marked with 12 and the bearing is marked with I ^.

A transverse rod 14 is attached to the angle lever part II ¹ , on which one or more tension springs 15 act. The tension spring or springs 15 are furthermore articulated to a transverse rod or a bar 16 or the like, which is fastened to the frame 20. The direction of force of the tension spring (s) 15 runs in such a way that it does not intersect the shaft axis center point 12, but rather passes the axis center point by a selectable amount χ . The linkage 9 to 11 is therefore always under the action of the tensile force of the spring (s) 15 in the rest position.

In the event that the end of an extruded profile P is to be clamped by the device C, the clamping jaw 1 is pivoted up, so that a free Space between clamping jaw 1 and base plate 21 is created. This is done either manually or automatically the angle lever 11, ll 'has been moved in the direction of the arrow, so that the lever linkage 9 to 11 is raised. As soon as the adjustment force to be applied. ' the

909807/0294

- 6 - '■ December 14, 1965

Thu / Me - H

Reaction force has overcome the spring force, d. H. the force axis of the spring (s) not, as in Pig. 2, which runs past the apex of the shaft axis 12 to the right but to the left, the tensile force acts the spring (s) 15 in turn on the linkage 9 to 11; and that it then holds the linkage in the raised position.

This lever movement had the consequence that, at the same time as the rotary movement of the shaft 2, the tabs 3, 3 ^t and thus the rod 4 were moved in the direction of the arrow. The rod 4 has also pivoted the clamping jaw 1 resting by means of the nose I ¹ in the direction of the arrow, so that the previously mentioned free space between the clamping jaw 1 and the base plate 21 is created.

As soon as the end of the profile assumes the position shown in Fig. 2, the lever linkage 9 to 11 is moved in the opposite direction of the arrow, the linkage 9 to 11, the shaft 2, - the tabs ^, ~ $ ^x and the driver rod 4 in the starting position are returned due to the tensile force of the spring (s) 15 exerted on the linkage. The clamping jaw 1, which is arranged in a freely oscillating manner on the shaft 2, also tends to return to the starting position as a result of the oscillating movement. It is prevented from doing so, however, since its preferably circular back 18 meets the profile P which rests on the base column 21. As soon as this position is reached, the strand pull-out device is activated, ie the Viagen B moves away from the extruder G. A tensile force is exerted and the profile P is clamped between the clamping jaw 1 and the base plate 21 with a clamping force.

90 9807/02 9 4

- 7 -

U52374

- 7 - December 14, 1965

Thu / Me - H

The clamping force depends on the tensile force of the strand pull-out device. However, the tensile force is allowed are only below the high-temperature strength of the pressed profile produced, otherwise the profile will be still warm stretched and constricted.

This is avoided if in a manner known per se the profile is sucked onto the storage bed F at press speed and with a slight excess of force. The generated The clamping force in the clamping device is consequently only so great that the profile P is clamped is held.

3ei the width of the jaw 1 ensures that the PreSprofil P in a relatively large Scatter area can be clamped in the transverse direction. The clamping jaw is kept almost as wide v / ic is the width of the storage bed.

In the event that several profiles P pressed out at the same time are to be clamped next to one another, if necessary either the one existing jaw 1 with a jacket 19 made of slightly resilient, heat-resistant To clad material or to subdivide the clamping jaw into individual lamellas 17 without a jacket.

The design of the clamping device C with a laminated clamping jaw is shown in FIGS. The slats are denoted by 17a ... to 17k. Each of them has a nose 17 'on the rod-shaped Driver 4 is applied.

The function of the lever linkage 9 to 11 for opening ur.c closing the clamping device is the same

909807/029 /. . f> _

- 8 - 'i4. 12th 1965

Thu / Me - H

as in the embodiment according to FIGS. 2 and ^. Likewise the reference numbers for the individual device parts must be adopted accordingly.

In contrast to the existing lamellae 17 compared to only one existing clamping jaw 1, return in closing In the sense of the clamping device C, all the lamellae 17 return to their starting position. Which are not on a profile P hit. The slats 17 have as well the clamping jaw 1 preferably has a profile in the shape of a segment of a circle. Foregoing a special one heat-resistant coat is made with the help of the jaw lamellas 17 an advantageous, likewise over a relatively large scatter range of the strand exit direction optimal clamping under clamping force guaranteed.

Due to the tensile force exerted by the traction means A when the pull-out carriage B moves, the clamping force is increased of the attacking on one or more press profiles P lamellae 17 and the bottom plate 21 on the or Profiles P exercised, which peeled off on the storage bed P. will.

909807/029

Claims (1)

Claims I ^ Clamping device for a strand pull-out device on metal extrusion presses with a clamping jaw exerting a clamping force on the extrusion profile to be extracted, which can be moved in the opening sense by a linkage and otherwise pivot freely around an axis « bar is characterized by the use of a freely oscillating, almost as wide as the storage bed (P) held jaw (l), which is on a arranged in the Ralimen (20, 22) mounted shaft (2) is that in the sense of opening and closing the clamping jaw by a spring force Lever linkage (4 to 11) is rotatable, the jaw jm opening sense by a driver (4) of the Lever linkage on a nose (l *) of the clamping jaw attacks, is pivotable and in the closing sense freely pendulum and the profile P with the help of the tensile force the pull-out device between itself and the base plate (21) of the device frame (20, 22) stuck. 2. Clamping device according to claim 1, characterized in that the back (L3) of the circular segment-shaped Clamping jaw (1) with a jacket (19) made of slightly flexible, heat-resistant material such as Arbest, Lead ο. Ä., is dressed. 909807/0 294 - \ - 14. 12. I965 ¹ Thu / Me - H 523 - J5. Clamping device according to claim 1, characterized in that that the clamping jaw (l) is divided into lamellae (17a ... 17k), which are axially with play are arranged adjacently on the V / elle (2). 4. Clamping device according to claim 1 to j5 1, characterized in that a rod is provided as the driver (4) of the lever ^{linkage, which connects the two tabs (3, ^ 1} ) attached to one another in a rotationally fixed manner on the shaft (2). 909807/0294