EP0998997A1 - Flanging and seam folding apparatus and method for flanging and closing seams - 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 to a method for flanging and folding closing.

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 Clamping of seals are only possible under Fabricate difficulties and / or require post-processing. The necessary preceding a 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 due to manufacturing reasons restrictions subject to. 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 lock 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 finds.

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

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 Lock wheel sledge.

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 succeeds in impressing them with a concave beading and Infeed roller and an opposing convex Support roller.

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

Fig. 1a

eine schematische 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 und

Fig. 13

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

Show it:

Fig. 1

1 shows a schematic perspective representation of a flanging and seaming machine in its function on a pipe stub,

Fig. 1a

1 shows a schematic perspective illustration of the folding closing 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

a third sectional view of a pipe joint with a seal, with the fold shape changed compared to FIG. 11 and

Fig. 13

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

The partial perspective view of a flaring and Falzschliessmaschine, 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 the tube stump 100 was first in the drawn operation a surrounding 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 stub 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.

The beading and feed roll 1 is optional in the present case and drawn accordingly; also the bead 101, because they can be dispensed with because the leadership and Pressure rollers 7 ', with their shown rotation, the ring 98 lead safely.

As can be seen from Fig. 1a, prefabricated Rings 98 are used which 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.

When machining rings 98 into which there is no bead 101 is impressed, can be on the beading and feed wheel 1 and on the support roller 2, what handling the machine again

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, which is provided with ball bushings 48 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 - 23.

The necessary linear movements are also by commercial double-acting hydraulic cylinders produced, and that is 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 roller 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 twisting the threaded piston rods 43 and 44 in corresponding threads 49 and 52 in the carriage 57 or 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 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 41.

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. Further is 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 retracting in the direction of the arrow Forming 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, led 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 of the closing 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 beveled by 50 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 locking wheel 6 first the end face 6 ', then with the range of the radius R and finally with the periphery of the right side surface 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 shown above.

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 Install sliding finger above the lock roller 6 the seal, during the closing process, in its lowest position holds.

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 improved, immovable clamping, like the sectional view of the Sealing ring shows.

The embodiment of such a finger or an or Several small roles largely depend on the chosen one Form the seal and can easily attach to the subject of the invention be adapted.

The flanging and seaming machine has dimensions and Drive up performance that even includes their shipment to construction sites allow. In order to have a completely autonomous operation there guarantee, one suffices on the diameter of the given Ventilation pipes matched set of roles. In addition it is recommended to use threaded holes in the support surface / machine table, to be attached to several circles so that the fixed guide and pressure rollers can be screwed in there are.

Label list

1

Beading and feed roll (concave)

2nd

Support roller (ring-shaped, convex)

3rd

Support surface / machine table

4th

Form roller (convex)

5

Form roller (concave)

6

Lock wheel

6a

Hole in 6

6 '

Front of 6

6 ''

Side faces of 6

7

Guide and pressure rollers

7 '

Guide and pressure rollers for rings / Hold-down

8th

Tensioning rail

9

Tension lever

10th

Bracing

11

Bead roll storage

11a, 11b

Roller bearings

12th

Form roll storage

12a, 12b

Roller bearings

13

Form roll storage

13a, 13b

Roller bearings

14

Beading roller hub

15-17

Drive shafts

18-20

Universal joints

21-23

Intermediate waves

24-26

Universal joints

18-26

Cardan drives

27

Locking wheel storage

27a, 27b

Tapered roller bearings

28

Barrel axis

29

Spacer rings

30th

Locknut

31

Hexagon socket

32

Inclined stroke drive

33

Lock wheel slide (lifting bearing)

34

Hydraulic cylinder

35.36

Hydraulic cylinder (hydr.)

37-39

Drive motors (hydr.)

40

Hydraulic unit

41

oilcontainer

42

Mounting frame

43.44

Threaded piston rods (adjustable)

45.46

Guide shafts

47

Beading roller carriage with 48

48

Ball bushings

49

thread

50

Through hole

51

Form roller carriage

52

thread

53

Recess

54

Form roller carrier (adjustable)

55

Adjusting screws

56

Swivel axis (guided in rails)

98

ring

99

Ring fold

100

Pipe stump / elbow

100 '

Ring (spacer)

101

Bead (ring-shaped)

102

Pipe collar (flare)

103

Form for seal / area

104

Double fold

105

another double fold

110

Pipe end (counterpart)

120

Machine stand

121

Trusses

122

Mounting plates

123

Control device (control box)

200

Seal (basic form)

201

Clamping part seal (Var. 1)

202

Clamping part seal (Var. 2)

203

Clamping part seal (Var. 3)

α

Angle to the perpendicular

H

Stroke

L

Lot

p

Pressure lines (oil)

p '

Pressure oil connections

R

Radius of 6

Claims (14)

Flanging and / or seaming machine for forming and for closing fold connections during manufacture of pipes and of segments Pipe connections and bends, the machine being a swivel-mounted beading and infeed roll, one Support roller and a rotatable locking wheel contains, and which in a Schliessradschlitten arranged locking wheel with a support surface of the Support roller includes an acute angle and on attacks a pipe stump or ring, characterized in that that the closing wheel slide (33) below the support surface (3) is arranged and plumb (L) forms an angle (α) of less than 35 °. Flanging and seaming machine according to claim 1, characterized marked that in the closing wheel sled (33) a pivot axis (56) is provided, around which the angle (α) is adjustable and fixable. Flanging and seaming machine according to claim 1, characterized characterized that the closing wheel sled (33) with the solder (L) an angle (α) of 8 ° to 12 ° or includes from 20 ° to 30 °. Flanging and seaming machine according to one of the preceding Claims, characterized in that the end face (6 ') of the closing wheel (6) at the beginning of the closing process is the work surface and this Work surface with the side surfaces (6 '') a blunt Forms an angle. Flanging and seaming machine according to claim 1, characterized characterized that a beading and infeed roll (1) with a concave recess, parallel to the Support surface (3) is arranged, which the pipe stump (100) on a bead (101) against at least a convex support roller (2), inside of the pipe stub (100) presses and leads, the Rollers (1; 2) motor-driven on both sides and peripherally synchronized with each other. Flanging and seaming machine according to claim 5, characterized characterized that the individual wheels and Rollers (1,2,4,5) via cardan drives (18-26) and hydraulic Drive motors (37-39) are driven. Flanging and seaming machine according to claim 5, characterized characterized that additional support rollers (100) are provided, which are rotatable and lie inside the pipe stump (100). Flanging and seaming machine according to claim 1, characterized characterized in that a hold-down device (7 ') with End rollers is provided which has a ring (98) slidable in the plumb line (L) on the support surface (3) leads. Flanging and seaming machine according to claim 5 or 6, characterized in that this is a convex Form roller (4) and one adapted to the form roller (4) to this spacable convex form roller (5) has, and wherein the convex form roller (4) on a Height above the support surface (3) is arranged, which corresponds to the flare dimension to be produced. Flanging and seaming machine according to claim 1, characterized marked that in the machine stand (120) a hydraulic unit (40) is arranged, which Hydraulic cylinder (34-36) and the drive motors (37-39) feeds. Process for flanging and closing folds with a flanging and seaming machine according to claim 1, 6 and 8, for forming and closing fold connections in the manufacture of pipes and pipe connections and bends consisting of segments, the machine being a swivel-mounted beads and Infeed roller, a support roller and a rotatably mounted one Lock wheel contains, and that in one Lock wheel slide arranged lock wheel with a Support surface of the support roller an acute angle includes and attacks a ring, thereby characterized in that in a first step the ring by means of the hold-down device the support surface that is spanned in one second process step by delivering the deposited Form rolls a flange with a rounded Flange approach that is created in a third Process step of the closing wheel sled from below is fed onto the protruding flange until the Fold on the ring and or an inserted seal jammed and secured. Process for flanging and closing folds Pipe segments and in bend segments with a flare and Falzschliesmaschine according to claim 1 and 6 to 7, for forming and closing fold connections in the manufacture of segments Pipe connections and bends, the machine being a swivel-mounted beading and infeed roll, one Support roller and a rotatable locking wheel contains, and which in a Schliessradschlitten arranged locking wheel with a support surface of the Support roller includes an acute angle and on attacks a pipe stub, characterized in that that in a first step into an end piece a circumferential bead is embossed on a pipe stump will that in a second step by delivering the offset form rolls Flange created with a rounded flange approach will that in a third step Closing wheel sled from below onto the protruding one Flange is fed until the fold lies against the pipe section and or an inserted sealing tape is jammed and backs up. A method according to claim 12, characterized in that during process steps two and three the Beading and feed roller is engaged and thus the workpiece is guided axially and laterally. A method according to claim 11 or 12, characterized in that during the third step by means of a sliding finger or at least one Roll the inserted sealing tape in its lower one Position is held.

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