EP1126938B1 - Bordering and/or crease-closing machine and method for operating the same - Google Patents

Abstract

The machine has its closing wheel (6) below the working surface. A shaping roller (4) and a beading and feeding-in roller (1) form a bead in the workpiece (100), which during this process is held in the correct position by hydromechanically driven rollers (1, 2). The closing process taking place from below enables the optimum engagement angle to be set on the closing wheel to reduce wear.

Description

The present invention relates to a machine according to the preamble of claim 1 and method for flanging and folding closing according to claims 11 and 12.

A seaming machine is among others from EP -A- 0 104 145 known and has in practice for closing common folds for seam connections in pipe bend segments, especially in the ventilation industry, proven. It is about one in one Locking wheel slide guided locking wheel, which both arranged above a support surface for the pipe ends the folds are closed. The rotating locking wheel has an oblique working surface; the closing wheel sled is also at an oblique angle to the support surface arranged.

Leave due to the resulting geometric relationships with the known device only simple fold connections produce. More complicated folds, such as those used for secure clamping of seals are only necessary manufacture with difficulty and / or need one Post processing. The necessary pre-fold formation Flanging was done on a separate machine or workstation created.

It is therefore an object of the present invention to provide a seam closing machine to create which these disadvantages do not has and the designer of sealing connections a optimal design of high quality seals in numerous Variants possible without this in their form and their dimensions for manufacturing reasons restrictions subject. In particular, ventilation technology in a rational and safe way Pipe connections can be made, their use allow in higher ventilation or sealing classes.

In addition, the flanging should be the same on the same machine Workstation be executable. Also prefabricated Standard parts such as connecting rings and sleeves processed further can be.

The machine to be created and the corresponding fold-closing method are supposed to be efficient and safe Allow operation by untrained personnel.

This object is solved by the features of claim 1.

The arrangement of the closing wheel and the closing wheel slide below the support surface, which corresponds to the machine table, allows a safe production of almost any Flares and folds.

The following dependent claims are advantageous Developments of the subject matter of the invention are described.

A closing wheel slide with a swivel axis can be optimally adjusted to the sheet quality and prevents inadmissible wear on the material to be processed and on the closing wheel.

A fixed angle of the closing wheel slide from 8 ° to 12 ° is particularly suitable for the installation of seals in the folds; while that of 20 ° to 30 ° mainly for end folds, without using seals place.

A locking wheel with a large area that engages the flare Work surface requires minimal force and causes only a little wear.

A plate-shaped formation of the side surfaces the closing wheel surprisingly results in one more greatly improved, positive locking even of thick ones and compliant seals.

A particularly precise and safe guidance of a pipe stump or a ring is guaranteed by a surrounding bead, which by two opposite, concave or convex roles is generated.

Cardan drives are very space-saving; they allow in remaining space the problem-free accommodation of the Schliessradschlittens.

The arrangement of several support rollers increases the Security is also the result of the resulting parallel guidance the quality of the folds improved.

Rotatable hold-down devices allow safe processing of rings, even if there is no surrounding bead have or should be minted afterwards.

The execution of the machine with form rollers is particularly favorable, which allow crimping in the simplest way, without the workpiece being reclamped or onto another Workstation must be spent.

Hydraulic drives are due to their relatively small size Dimensions and the high torques that can be achieved with it extremely suitable.

According to the procedure, rings are made by rotating hold-down devices clamped on the support surface of the machine, then becomes a flange-like through the form rollers Flare created, which after inserting a sealing tape is flipped and closed.

Larger pipe segments, elbow segments and connecting rings with stop beads are advantageously on this Bead led or this is generated first. The easiest they can be impressed using a concave bead Infeed roller and an opposing convex Supporting role.

Precise guidance of the workpiece is ensured by the Beading and infeed roller engaged during processing ensures which together with the opposite convex form roller prevents shifting.

It is recommended during the closing process on the pipe collar manual or preferred depending on the type of seal held down by hydraulically operated fingers or rollers.

The subject of the invention is described below with the aid of drawings shown as an example.

Fig. 1

eine ausschnittweise Perspektiv-Darstellung einer Bördel- und Falzschliessmaschine in ihrer Funktion an einem Rohrstumpf,

Fig. 1a

eine Perspektiv-Darstellung der Falzschliessmaschine in ihrer Funktion an einem Blechring,

Fig. 2

eine Teilschnittdarstellung der Rollen und Räder aus Fig. 1, mit ihren Lagerstellen und dem Schliessradschlitten,

Fig. 3

eine vereinfachte Darstellung des Maschinenständers der Falzschliessmaschine mit den darin enthaltenen Komponenten, in einer Ansicht von vorne,

Fig. 4

eine vereinfachte Darstellung des Maschinenständers in Fig. 3 in einer Ansicht von oben (Draufsicht),

Fig. 5

eine Ausschnittvergrösserung der Darstellung Fig. 4, mit zusätzlichen Einzelheiten,

Fig. 6

eine Teilschnittdarstellung des Schliessrades mit seinem Schlitten in einer Arbeitsstellung,

Fig. 7

eine Teilschnittdarstellung des Schliessrades mit seinem Schlitten in einer weiteren Arbeitsstellung,

Fig. 8

eine Teilschnittdarstellung des Schliessrades mit seinem Schlitten in einer dritten Arbeitsstellung,

Fig. 9a

das Schliessrad in Draufsicht,

Fig. 9b

das Schliessrad in Schnittdarstellung,

Fig. 9c

die Winkelverhältnisse am Schliessrad,

Fig. 10

eine Schnittdarstellung einer Rohrverbindung mit angedeuteter Dichtung,

Fig. 11

eine weitere Schnittdarstellung einer Rohrverbindung mit Dichtung, mit gegenüber Fig. 10 geänderter Falzform,

Fig. 12

eine dritte Schnittdarstellung einer Rohrverbindung mit Dichtung, mit gegenüber Fig. 11 geänderter Falzform,

Fig. 13

eine vierte Schnittdarstellung einer Rohrverbindung mit Dichtung, mit gegenüber Fig. 10 geänderter Falzform.

Fig. 14a und Fig. 14b

zeigen ein bevorzugtes Schliessrad für eine starke Klemmung von Dichtungen und

Fig. 15

das bevorzugte Schliessrad im Einsatz, dargestellt in seinen beiden Endpositionen.

Show it:

Fig. 1

a partial perspective view of a flanging and seaming machine in its function on a pipe stub,

Fig. 1a

1 shows a perspective view of the seaming machine in its function on a sheet metal ring,

Fig. 2

2 shows a partial sectional view of the rollers and wheels from FIG. 1, with their bearing points and the closing wheel slide,

Fig. 3

a simplified representation of the machine stand of the seaming machine with the components contained therein, in a view from the front,

Fig. 4

3 shows a simplified illustration of the machine stand in FIG. 3 in a view from above (top view),

Fig. 5

4 shows an enlarged detail of the illustration, with additional details,

Fig. 6

a partial sectional view of the closing wheel with its slide in a working position,

Fig. 7

a partial sectional view of the closing wheel with its slide in a further working position,

Fig. 8

a partial sectional view of the closing wheel with its slide in a third working position,

Fig. 9a

the closing wheel in top view,

Fig. 9b

the closing wheel in a sectional view,

Fig. 9c

the angular relationships on the closing wheel,

Fig. 10

2 shows a sectional illustration of a pipe connection with a seal indicated,

Fig. 11

7 shows a further sectional illustration of a pipe connection with a seal, with the fold shape changed compared to FIG. 10,

Fig. 12

3 shows a third sectional illustration of a pipe connection with a seal, with the fold shape changed compared to FIG. 11,

Fig. 13

a fourth sectional view of a pipe connection with a seal, with the fold shape changed compared to FIG. 10.

14a and 14b

show a preferred locking wheel for strong clamping of seals and

Fig. 15

the preferred locking wheel in use, shown in its two end positions.

The partial perspective view of a flare and Folding closing machine, Fig. 1, shows the processing of a Pipe stump 100. There is the pipe stump 100 with its tubular collar 102 - a crimp - over the Support surface 3 of the machine table aligned vertically, which is characterized by the solder L.

In tube stub 100 was first in the work step drawn a circumferential bead 101 is embossed by a concave Beading and feed roll 1, which is driven and that Pipe piece 100 against an inside, dashed shown, convex support roller 2 presses.

Then the flare 102 was also by the Rolls 4 and 5 drawn in dashed lines, the Beading and infeed roller 1 ensured parallel guidance.

After inserting a seal, not shown here, in the area 103, a closing wheel 6 moves from below rotating flare 102 and closes it, forming of a fold.

Adjustable, rotatable are used to guide the stump 100 Guide and pressure rollers 7. These are open an angled clamping rail 8 stored and can Align using a tensioning lever 9 and a strut 10 and fix.

While in Fig. 1 the workpiece to be machined is a longer one Pipe stump 100 or a pipe bend is shown in Fig. 1a a ring 98, machined.

Be on the same support surface 3 of the machine table guide and pressure rollers 7 'suitable for rings, preferably two are permanently mounted and two more can be moved on tensioning rails 8 and via tensioning levers 9 fixed and held laterally by struts 10.

In a further variant not shown here are the adjustable guide and pressure rollers 7 or 7 ' their tensioning rails with the form roller carriage described later 51, Fig. 4, Fig. 5 connected, which facilitated Handling when inserting and removing the workpiece serves.

As can be seen from Fig. 1a, prefabricated Rings 98 are used that already have a ring fold 99 have and have a tubular collar 102.

An annular bead 101 can also already be present be what, as usual, as a stop bead for pipe connections serves.

The individual rollers and the drives can be seen in FIG of the arrangements of Fig. 1 and Fig. 1a in their Take a closer look at the function.

It can be seen how on the pipe section 100 through the partial concave form roller 5 and the partially convex counteracting Form roller 4 form 103 for a positive clamping the seal is formed Beading and feed roll 1 in turn the parallel guidance of Pipe piece 100 on its bead 101, Fig. 1, and prevented moving or lifting the workpiece.

This beading and infeed roll 1 sits on a corresponding one Hub 14, with a drive shaft 15, which in turn in a front and a rear roller bearing 11a or 11b, a bead roller bearing 11 is guided.

The beading roller bearing 11 is part of a beading roller carriage 47, provided with ball bushings 48, on a front and a rear guide shaft 45 mounted and is performed in parallel. See Figs. 4 and 5.

A form roller carriage 51 is configured analogously, wherein here a form roller bearing 12 with roller bearings 12a and 12b is equipped and on a drive shaft 16 Form roller 4 carries.

The support roller 2 and the form roller 5 sit on a common one Drive shaft 17, with roller bearings 13a, 13b, in a form roller bearing 13, which is also on guide shafts are movable.- In Fig. 2 is the one continuous guide shaft 45 from the form roller storage 13 outstanding, evident. The whole thing is arranged in an adjustable form roller carrier 54.

Aligned at an acute angle α to the perpendicular L. the closing wheel 6, in a closing wheel slide 33, with a closing wheel bearing 27. The closing wheel slide 33 is about a pivot axis 56 in its angular position α to the perpendicular L adjustable and hydraulically displaceable in the direction of the arrow.

The devices described above are arranged in a machine stand 120, Fig. 3, which for stiffening Traversen 121 and the entire drive technology - This consists primarily of a hydraulic unit 40 with pressure oil connections p ', pressure lines p for the hydraulic oil and three standard hydraulic motors 37 - 39, which is flange-mounted on a lower mounting plate 122 are. The drive shafts 15-17 described in Fig. 3 are via cardan drives 18 - 26, coordinated with each other, hydro-mechanically driven. The corresponding universal joints are labeled 18-20 at the top and 24-26 at the bottom. These joints are connected via intermediate shafts 21 - 23rd

The necessary linear movements are also by commercial double-acting hydraulic cylinders produced, namely the movement of the beading roller carriage 47 by a hydraulic cylinder 35, over which with a Threaded piston rod 43; the movement of the Locking wheel slide 33 is done by a on the inclined stroke drive 32 flanged further cylinders 34.

Also shown on machine stand 120 the support surface 3, which forms the machine table and the simplified pivot axis 56 shown for adjustment of the angle α, Fig. 2, is used.

The likewise simplified top view of the flanging and Folding closing machine, Fig. 4, shows the machine stand 120 with its trusses 121 in the covered state, i.e. without support surface / machine table 3.

Here you can see the parallel guidance in a mounting frame the slide 47, 51 and 54 by means of guide shafts 45 and 46.

The two hydraulic cylinders are located on the front side 35 and 36 can be seen, the cylinder 35 on the beading carriage 47 and the cylinder 36 via its piston rod 44 engages on the form roller carriage 51. The Form roller carrier 54 is manually adjustable with adjusting screws 55, Fig. 5, and also on the shafts 45 and 46 out.

The starting positions of the slides 47, 51 are the workpiece adjusted by turning the threaded piston rods 43 and 44 in corresponding threads 49 and 52 in the carriages 57 and 51. See Fig. 5.

The roles 1, 4, 2 and 5 are indicated by dash-dotted lines; they are above the fictional viewer, above the removed machine table.

To the right of the machine stand 120 and connected to it is a box-shaped control device 123, about which the work steps are triggered in the machine. For illustrative purposes, those are notoriously known Safety devices and emergency shutdowns not shown.

In the right part of FIG. 4, the hydraulic unit 40 is included to see its pressure oil connections p 'and pressure oil lines p. Below is a rectangular oil container 41st

5 shows the left part 4 with additional components. These are spherical rifles 48, as well as those with fitting holes only Form roller carrier 54 and the through hole 50 in Carriage 47 and indicated its thread 49. Furthermore to see a recess 53 in the form roller carriage 51, through which, from below, the closing wheel 6 onto the workpiece, act on the pipe stump 100 with its pipe collar, 102 can.

The further enlarged FIGS. 6 to 8 show details the locking wheel 6 with its freely rotating barrel axis 28 and the bearing 27 with the generously dimensioned Tapered roller bearings 27a and 27b in three different Intervention stages on the workpiece.

The locking wheel 6, with its bore 6a, is from the front Tapered roller bearings 27a are slightly lifted by a spacer ring 29 and by a locknut 30 and an additional one Hexagon socket screw 31 secured against rotation with the barrel axis 28 connected and easy to replace.

In Fig. 6 you can see the horizontally moving back in the direction of the arrow Form roller carriage 51, after the formation of the Pipe collar 102 and the area 103. Simultaneously drives the closing wheel slide 33 in the lifting direction H upwards.

Fig. 7 shows the form roller carriage 51 in the retracted Condition so that the front of the lock wheel 6 can now attack the pipe collar 102.

Before that, the ring-shaped one indicated in FIG Seal 200 inserted, i.e. correctly positioned in area 103 and held.

8 is the folding process with the positive holding seal 200 already completed; the closing wheel sled 33 has reached its top position, the Seal 200 is clamped.

The pipe stub is used during the entire process 100 between the bead and form roller 1 and the support roller 2, guided on the bead 101 and driven by this Rollers 1 and 2 rotated about its axis of rotation.

The correct folding is of great importance appropriate design of the locking wheel 6.

In Fig. 9a, the locking wheel 6 is drawn in plan view. In this illustration you can see the bore 6a, the end face 6 'and a side surface 6 ".

The vertical sectional view of Fig. 9b shows the profile the locking wheel 6. Here you can see that the left side surface 6 "has a smaller diameter than that right. The obtuse angle thus formed is in Fig. 9c denotes and is 80 °, measured to the parallel part the right side surface 6 ". In the peripheral area of the right side surface 6 "is also a bevel of 5 ° present, the transition with a curve from the radius R is provided.

9b and 9c in connection with Fig. 6 to 8, it can easily be seen that the Closing the tube collar 102, the closing wheel 6 first the end face 6 ', then with the range of the radius R and finally with the periphery of the right side 6 " is engaged. This functional sequence results in precise positive folds, such as those used to hold seals 200 are desired.

Due to the rolling and sliding engagement of the locking wheel 6, there is only minimal friction on the workpiece, which has a positive effect on the plating and on the wear the locking wheel 6 affects.

10 to 13 are end portions of such seals 200 - 203 recorded as an example. It varies not only the area 103, but also the pipe collar, the can degenerate up to double fold 104 or 105.

The bead 101 can also be shaped in different ways, as the illustrations above show.

In practical tests, it has been shown that the end parts the seals 200 to 203, due to their elasticity tend to evade so that it is - for safety reasons - recommends a hydro-mechanically operated one Install sliding finger above the locking roller 6 the seal, during the closing process, in its lowest position holds.

The embodiment of a aforementioned finger or one or several small roles largely depends on the chosen one Form the seal and can easily attach to the subject of the invention be adapted.

An additional one can be seen in the clamping part 203 in FIG. 13 Lip 204, which is opposite the clamping parts 200 to 202 a further improved clamping allows, like the one here also broken sectional view of the sealing ring shows.

It has been shown in practice that rubber seals in particular with a second lip 204, cf. Fig. 13, very much Spring deflection and therefore require increased clamping. It was therefore another lock wheel according to Fig. 14a and Fig.14b created, which due to its Shape, the delivery route and the dynamic properties of the Folding closing machine a particularly strong, immovable Clamping the voluminous seal causes.

14a, in conjunction with FIG. 14b, shows that this locking wheel, designated 60, plate-shaped is designed and bent by an angle β of 20 ° Side surfaces 60 ". Furthermore, an end face 60 ', a recess 61, a shaft 65, with an end thread 63 and a wedge track 64 embedded therein can be seen.

The representation analogous to FIGS. 6 to 8 is shown in FIG. 15 the closing wheel 60 with its plate-shaped offset 62 in engagement. Here you can see that when the Form roll 4 - symbolized by a horizontally delimited arrow - The closing wheel 60 in its upward movement experiences a deflection.

This is partly kinematic and partly due to a deflection at the bearing points 27a, 27b, 33 caused polygonal Path is through corresponding arrows, parallel to Locking wheel 60 characterized.

The starting position of the closing wheel 60 is dash-dotted drawn as position A, while position B the Lock wheel drawn in full lines in its end position shows.

The locking wheel 60 is fixed by a lock nut 63 in a manner known per se.

It has been shown that with this arrangement also with Lubricants or talc seals with thick Clamping parts 204 can be processed perfectly and also under harsh assembly conditions immovable.

The flanging and seaming machine basically shows Dimensions and drive power based on even their shipment allow on construction sites. To be a completely autonomous one To ensure operation, a diameter is sufficient of the specified ventilation pipes Roll. It is also recommended in the support surface / machine table Tapped holes on several pitch circles to attach, so that there the fixed leadership and Pressure rollers can be screwed in.

Claims (14)

1. A flanging and/or fold closing machine for forming and for closing fold connections in the production of pipes and pipe connections and bends comprising segments, wherein the machine contains a rotatably mounted beading and delivery roller (1), a support roller (2) and a rotatably mounted closing wheel (6), and wherein the closing wheel (6) arranged in a closing-wheel slide (33) forms an acute angle with a support face of the support roller (2) and, when in use, engages on a pipe stub (100) or ring (98), characterised in that the closing-wheel slide (33) is situated below the support face (3) and forms an angle (α) of less than 35° with the perpendicular (L), in that the closing wheel (6) mounted in the slide (33) has a smaller diameter on one lateral face (6") thereof remote from the support roller (2) than on the other lateral face (6") facing the support roller, so that an obtuse angle is formed between the first lateral face (6") and the end face (6') of the closing wheel (6), and in that the region between the end face (6') and the periphery of the support roller (2) is provided with a radius (R).
2. A flanging and fold closing machine according to Claim 1, characterised in that a pivot axis (56), about which the angle (α) can be set and fixed, is provided in the closing-wheel slide (33).
3. A flanging and fold closing machine according to Claim 1, characterised in that the closing-wheel slide (33) forms an angle (α) of from 8° to 12° or from 20° to 30° with the perpendicular (L).
4. A flanging and fold closing machine according to Claim 1, characterised in that the lateral face (60'') of the closing wheel (6) that faces the support roller (2) is bent over at an angle (β).
5. A flanging and fold closing machine according to Claim 1, characterised in that a beading and delivery roller (1) having a concave recess is arranged parallel with the support face (3) which presses and guides the pipe stub (100) on a bead (101) against at least one convex support roller (2) inside the pipe stub (100), wherein the rollers (1; 2) are driven by a motor on both sides and are synchronised with each other at their periphery.
6. A flanging and fold closing machine according to Claim 5, characterised in that the individual wheels and rollers (1, 2, 4, 5) are driven via universal drives (18 to 26) and hydraulic drive motors (37 to 39).
7. A flanging and fold closing machine according to Claim 5, characterised in that there are provided further support rollers which are designed to be jointly rotatable and which abut in the interior of the pipe stub (100).
8. A flanging and fold closing machine according to Claim 1, characterised in that a holding-down means (7') having end rollers is provided and guides a ring (98) slidably in the perpendicular (L) on the support face (3).
9. A flanging and fold closing machine according to Claim 5, characterised in that it has a convex shaping roller (4) and a convex shaping roller (5) which is adapted to the shaping roller (4) and which is spaceable therefrom, wherein the convex shaping roller (4) is situated at a height above the support face (3) that corresponds to the dimension of the flange to be produced.
10. A flanging and fold closing machine according to Claim 5, characterised in that a hydraulic unit (40), which supplies hydraulic cylinders (34 to 36) and the drive motors (37 to 39), is arranged in the machine stand (120).
11. A method for flanging and closing folds with a flanging and fold closing machine according to Claims 1, 5 and 7, for forming and closing fold connections in the production of pipes and pipe connections and bends comprising segments, wherein the closing wheel (6) arranged in the closing-wheel slide (33) engages on a ring (98), and, in a first method step, the ring (98) is clamped on the support face (3) by a holding-down means (7'), and, in a second method step, a flange having a rounded flange projection is formed by advance of the offset shaping rollers, and, in a third method step, the closing-wheel slide (33) is advanced from below to the protruding flange, wherein the end face of the closing wheel (6) is the operating face at the start of the closing operation, and the closing-wheel slide (33) is advanced further until the fold rests against the ring (98) and/or clamps and secures an inserted seal.
12. A method for flanging and closing folds on pipe segments and in bend segments with a flanging and fold closing machine according to Claims 1, 5 and 7, for forming and closing fold connections in the production of pipe connections and bends comprising segments, wherein the closing wheel (6) which is arranged in the closing-wheel slide (33) engages on a pipe stub (100), and, in a first method step, a continuous bead (101) is impressed in an end piece of a pipe stub (100), and, in a second method step, a flange having a rounded flange projection is formed by advance of the offset shaping rollers and, in a third method step, the closing-wheel slide (33) is advanced from below to the projecting flange, wherein the end face of the closing wheel (6) is the operating face at the start of the closing operation, and the closing-wheel slide (33) is advanced further until the fold rests against the pipe piece and/or clamps and secures an inserted sealing strip.
13. A method according to Claim 12, characterised in that, during the method steps 2 and 3, the beading and delivery roller (1) is engaged, and therefore the workpiece is guided axially and laterally.
14. A method according to Claim 11 or 12, characterised in that, during the third method step, the inserted sealing strip is held in the lower position thereof by means of a sliding finger or at least one roller.

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