[0001] The invention relates to a device for forming a profiled edge on one end of a tubular
member, said device comprising a tabletop and two cooperating profiling rolls, which
project above said tabletop.
[0002] Such a device, as for example known from GB-A-2 270 021, is generally used for forming
an edge of L-shaped or Z-shaped section on the end of a tubular member, wherein the
L-shaped edge formed on a tubular member can be placed in the Z-shaped edge formed
on another tubular member, after which the Z-shaped edge can be folded over the L-shaped
edge so as to connect the two tubular members.
[0003] With the prior art devices, the end of the tubular member on which the profiled edge
is to be formed must be held down on the upper surface of the tabletop by hand, whilst
the respective end of the tubular member moves between the profiling rolls. Holding
down a tubular member, on which a profiled edge is to be formed, by hand in this manner
is difficult and requires comparatively much force, which has an adverse effect on
the production capacity.
[0004] According to the invention, the device comprises two guide rollers for the tubular
member, which guide rollers engage the wall of the tubular member during operation
at points located at least substantially opposite each other, and wherein the axis
of rotation of at least one of said guide rollers includes an angle deviating from
90° with the upper surface of the tabletop.
[0005] By using the construction according to the invention, the tubular member, on which
a profiled edge is to be formed, will be pressed against the upper surface of the
tabletop by means of said guide rollers, so that this no longer needs to be done by
the operator of the device, relieving the operator of a strenuous activity and enhancing
the accuracy of the operation of the device.
[0006] The invention will now be explained in more detail with reference to the accompanying
figures.
[0007] Figure 1 schematically shows a tubular member provided with an edge of L-shaped section.
[0008] Figure 2 is a schematic, sectional view of a tubular member provided with an edge
of Z-shaped section.
[0009] Figure 3 schematically shows the connected tubular members of Figures 1 and 2.
[0010] Figure 4 is a schematic top plan view of a part of the device according to the invention.
[0011] Figure 5 is a view of Figure 4, seen in the direction along line V-V, from which
the profiling rolls of the device have been left out.
[0012] Figure 6 is a top plan view of one of the guide rollers with an associated support.
[0013] Figure 7 is a side view of Figure 6.
[0014] Figure 8 is a side view of Figure 7.
[0015] Figure 9 is a top plan view of another one of the guide rollers and its support.
[0016] Figure 10 is a side view of Figure 9.
[0017] Figure 11 is a side view of Figure 10.
[0018] To interconnect two tubular members 1 (Figure 1) and 2 (Figure 2), tubular member
1 is provided with an outwardly folded flange 3 at one end, so that the respective
profiled edge of tubular member 1 will be of substantially L-shaped section.
[0019] The other tubular member 2 is deformed in such a manner as to comprise an outwardly
projecting flange portion 4 and an adjoining wall portion 5, which extends concentrically
with tubular member 2, so that the profiled end of the tubular member 2 will be of
substantially Z-shaped section.
[0020] As is furthermore shown in Figure 3, flange 3 of tubular member 1 can be placed on
flange 4 of tubular member 2 so as to interconnect the two tubular members 1 and 2,
after which wall portion 5 is folded over flange 3 so as to connect tubular members
1 and 2 in this manner.
[0021] Although the embodiment of Figures 1 - 3 shows the two tubular members 1 and 2 being
connected in such a manner that the central axes of the tubular members 1 and 2 are
in line, it is also possible, as is generally known in the art, to connect said tubular
members in a similar manner, such that the central axes of the two tubular members
1 and 2 include an angle with each other. To this end the tubular members are cross-cut,
prior to the profile being formed on the respective ends, along a plane that includes
a desired angle deviating from 90° with the central axis of a respective tubular member.
[0022] The forming of the profiled edges of the tubular members takes place in a well-known
manner by means of a machine including a tabletop 6, above which two drivable profiling
rolls 7 and 8 are disposed. The profiling rolls 7 and 8 are circumferentially provided
with a suitable profile for forming one of the above-indicated profiled edges at one
end of a tubular member 9 as schematically indicated by means of a circle in Figure
4. The end of said tubular member 9 that rests on tabletop 6 is passed between rolls
7 and 8 during operation as a result of rolls 7 and 8 being driven in the direction
indicated by arrow A. Tubular member 9 is furthermore guided by a supporting roller
10 in a manner which is known per se, which supporting roller is freely rotatable
on the end of an arm 11, which arm is movable in longitudinal direction and which
can be fixed in several positions with respect to the frame of the device (not shown)
for adaptation to the outside diameter of the tubular member 9 to be worked.
[0023] According to the invention, the device comprises two guide rollers 12 and 12', which
are disposed slightly upstream of the profiling rolls 7 and 8, seen in the intended
direction of movement of tubular member 9.
[0024] As is shown in more detail in Figures 6 - 8, the guide roller 12 that is disposed
in the interior of the tubular member 9 to be worked, seen in Figure 4, is freely
rotatable on a shaft 13, which is fixed to an L-shaped support 14.
[0025] Support 14 and a plate 16 carrying support 14 are jointly coupled to an L-shaped
arm 17 by means of a pivot pin 18, the central axis of which intersects the axis of
guide roller 12 perpendicularly.
[0026] As is apparent in particular from Figure 8, a slot 19 extending concentrically about
the central axis of pin 18 is formed in plate 16. Through said slot 19 a bolt can
be passed, which bolt can be screwed into a threaded hole 20 formed in one leg of
L-shaped arm 17, by means of which plate 16 can be clamped down in a desired position,
pivoted about pivot pin 18, with respect to arm 17.
[0027] The leg of L-shaped arm 17 that extends perpendicularly to the leg of the L-shaped
arm against which plate 16 can be clamped is provided with a slotted hole 21, which
extends in the longitudinal direction of the leg in question. L-shaped arm 17 is thereby
supported by a block 22 attached to the frame of the device (not shown). Arm 17 can
be moved in its longitudinal direction with respect to said block and be clamped down
in a desired position by means of a bolt (not shown) that is passed through slotted
hole 21, which bolt can be screwed into a threaded hole 23 that is formed in block
22.
[0028] As is shown in more detail in Figure 6, block 22 may furthermore be provided with
a graduation 24 for cooperation with a mark 25 on arm 17, which makes it easier to
adjust the guide wheel 12 correctly in accordance with the diameter of a tubular member
9 to be worked.
[0029] Guide roller 12' is freely rotatable about a shaft 26, which is attached to an L-shaped
support 27. Support 27 is connected with a plate 28 carrying said support, to a supporting
member 30 by means of a pivot pin 29. Supporting member 30 is movably supported, by
means of two guide pins 31 extending parallel to pivot pin 29, by a guide block 32
attached to the frame of the device (not shown).
[0030] The central axis of pivot pin 29 intersects the central axis of the shaft 26 supporting
the guide wheel 12' perpendicularly.
[0031] As is apparent from Figure 11, two slotted holes 33 extending concentrically about
pivot pin 29 are formed in plate 28. The supporting member 27 that supports wheel
12' and plate 28 can be pivoted about pivot pin 29 and be clamped down in a desired
position with respect to supporting member 30 by means of bolts (not shown) that are
passed through slotted holes 33, which bolts are screwed into threaded holes 34 formed
in said supporting member.
[0032] As is indicated by means of double arrow B in Figure 1, supporting member 30 and
the guide roller 12' connected therewith can be moved forward and backward in a direction
perpendicularly the axis of rotation of guide roller 12' by means of a pneumatically
or hydraulically operating setting cylinder (not shown).
[0033] As will furthermore be apparent from Figure 4, the imaginary line 35 extending perpendicularly
to the axis of rotation of guide roller 12, along which guide roller 12 can move forward
and backward, is slightly staggered with respect to the imaginary line 36 extending
perpendicularly to the axis of rotation of guide roller 12, along which the guide
roller 12 and the arm 17 carrying said guide roller 12 are movable. As is furthermore
shown in Figure 4, the guide roller 12 is positioned in such a manner that it abuts
against the inside wall of the tubular member 9 to be worked, whilst guide roller
12' is held in abutment with the outer circumference of the tubular member 9 to be
worked, at a point which is located substantially opposite the point of contact of
guide roller 12 with the inner circumference of tubular member 9, albeit slightly
more upstream during operation, seen in the direction of rotation of the tubular member
as indicated by arrow A.
[0034] Guide rollers 12 and 12' are furthermore positioned in such a manner that the axes
of rotation of guide rollers 12 and 12' do not extend perpendicularly to the upper
side of tabletop 6, but include an angle therewith, which makes it possible to have
the guide rollers 12 and 12', which make contact with the wall of the tubular member
9, exert a force on the tubular member 9 in the direction of the tabletop 6 during
their rotation about their axes of rotation when tubular member 9 is moved in the
direction indicated by arrow A. As a consequence of that, the end of the tubular member
facing towards the tabletop 6, on which a profile is to be formed, will be held down
on the tabletop 6 without human interference during the movement of the end of tubular
member 9, on which a profile is to be formed, between profiling rolls 7 and 8.
1. A device for forming a profiled edge on one end of a round tubular member (9), said
device comprising a tabletop (6) and two cooperating profiling rolls (7,8), which
project above said tabletop, characterized in that the device comprises two guide rollers (12, 12') for the tubular member, which guide
rollers engage the wall of the tubular member during operation at points located at
least substantially opposite each other, and wherein the axis of rotation of at least
one of said guide rollers includes an angle deviating from 90° with the upper surface
of the tabletop (6).
2. A device according to claim 1, characterized in that the axes of rotation of the two guide rollers (12, 12') include an angle deviating
from 90° with the upper surface of the tabletop (6).
3. A device according to claim 1 or 2, characterized in that the angle which the axis of rotation of a guide roller (12, 12') includes with the
upper surface of the tabletop (6) is adjustable.
4. A device according to any one of the preceding claims, characterized in that the guide rollers (12,12') are capable of reciprocating movement in a direction perpendicularly
to their axes of rotation and that said guide rollers can be adjusted in a desired
position.
5. A device according to any one of the preceding claims, characterized in that the point of contact of the guide roller (12') that engages the outer circumference
of the tubular member (9) to be worked is located before the point of contact of the
guide roller (12) that engages the inner circumference of the tubular member (9),
seen in the intended direction of movement of the tubular member to be worked.
1. Vorrichtung zur Ausbildung eines profilierten Rands an einem Ende eines runden rohrförmigen
Elements (9), wobei die Vorrichtung eine Tischplatte (6) und zwei zusammenwirkende
Profilierungsrollen (7, 8) aufweist, die über die Tischplatte vorstehen, dadurch gekennzeichnet, dass die Vorrichtung zwei Führungsrollen (12, 12') für das rohrförmige Element aufweist,
welche die Rollen beim Eingriff mit der Wand des rohrförmigen Elements während des
Betriebsablaufs in Punkten führt, die zumindest im wesentlichen einander gegenüber
liegen, und wobei die Drehachse von zumindest einer der Führungsrollen einen um 90°
von der Oberseite der Tischplatte (6) abweichenden Winkel einschließt.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Drehachsen der beiden Führungsrollen (12, 12') einen Winkel aufweisen, der um
90° von der Oberseite der Tischplatte (6) abweicht.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Winkel, den die Drehachse der Führungsrolle (12, 12') mit der Oberseite der Tischplatte
(6) einschließt, einstellbar ist.
4. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Führungsrollen (12, 12') in einer Richtung senkrecht zur ihrer Drehachse hin-
und herlaufen können, und dass die Führungsrollen in einer gewünschten Position eingestellt
werden können.
5. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Kontaktpunkt der Führungsrolle (12'), die mit dem Außenumfang des zu bearbeitenden
rohrförmigen Elements (9) im Eingriff steht, vor dem Kontaktpunkt der Führungsrolle
(12) zu liegen kommt, die mit dem Innenumfang des rohrförmigen Elements (9) im Eingriff
steht, gesehen ausgehend von der Soli-Bewegungsrichtung des zu bearbeitenden rohrförmigen
Elements.
1. Dispositif pour former un bord profilé au niveau d'une extrémité d'un élément tubulaire
rond (9), ledit dispositif comprenant un plateau (6) et deux rouleaux de profilage
(7, 8) qui coopèrent mutuellement et dépassent au-dessus dudit plateau (6), caractérisé en ce que le dispositif comprend deux rouleaux de guidage (12, 12') pour l'élément tubulaire,
lesdits rouleaux de guidage engageant la paroi de l'élément tubulaire pendant l'opération
en des points situés au moins sensiblement en face l'un de l'autre, et en ce que l'axe de rotation d'au moins un desdits rouleaux de guidage présente un angle qui
dévie de 90° avec la surface supérieure du plateau (6).
2. Dispositif selon la revendication 1, caractérisé en ce que l'axe de rotation de chacun des deux rouleaux de guidage (12, 12') présente un angle
qui dévie de 90° avec la surface supérieure du plateau (6).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'angle formé par l'axe de rotation d'un rouleau de guidage (12, 12') et la surface
supérieure du plateau (6) est réglable.
4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les rouleaux de guidage (12, 12') sont capables d'un mouvement alternatif dans une
direction perpendiculaire à leurs axes de rotation et en ce que la position desdits rouleaux de guidage est réglable.
5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le point de contact du rouleau de guidage (12') qui engage la circonférence extérieure
de l'élément tubulaire (9) à travailler est situé avant le point de contact du rouleau
de guidage (12) qui engage la circonférence intérieure de l'élément tubulaire (9)
vu dans la direction de mouvement prévue de l'élément tubulaire à travailler.