EP1518616B1 - Sheet rolling machine for forming beads, edges and the like on metal sheets - Google Patents

Description

The invention relates to a sheet metal rolling machine according to the preamble of claim 1

A sheet rolling machine of the type mentioned in the prior art from the EP 0 585 613 A become known to the applicant. This has work rolls, which are mounted in pairs with adjusting means on a roller stand. A work roll is stored in a pivotable yoke. At this yoke a pull rod 13 is attached to which a pressure piston cylinder attacks. This pressure piston cylinder is also supported on the fixed bearing block and serves as a drive means for introducing the bead depth. The tension rod also has a stop on which an eccentric of an adjusting lever is applied. With this adjustment lever or eccentric the bead depth can be adjusted.

Another plate rolling machine is from the EP 1 213 063 A have become known to the applicant. In this machine, the working head is designed as a turntable and has three beading tools, which are each by a hand lever on and disengaged.

The US-A-5,079,940 discloses a Belchwalzmaschine having as drive means a handle which rotatably mounted on a fixed bearing block and engages a pivotable bearing block.

The invention has for its object to provide a sheet rolling machine of the type mentioned, which is even less expensive to produce and also easier to use.

The object is achieved in a generic sheet rolling machine according to claim 1.

In the sheet metal rolling machine according to the invention, the introduction of the bead depth takes place by means of a pivotable lever which has a frame-fixed pivot point. This lever engages the pivotable bearing block. Such a lever enables a simpler and less expensive design of the sheet rolling machine. In particular, it is thus much easier to realize a sheet metal rolling machine with a multipart working head. Such a working head has, for example, three parts, on each of which a tool, in particular a working roller pair is arranged.

The setting of the bead depth is particularly easy when the said lever cooperates with a hand crank, which forms a stop which determines the depth of the bead. To change the bead depth, the stop is changed by turning the hand crank. However, the hand crank can also be replaced by a remote-controllable stop, which cooperates with said lever.

The said lever is according to the invention, a two-armed lever, wherein the one arm bears against the pivotable bearing block and on the other arm an air pressure cylinder or other suitable drive element attacks.

According to a development of the invention it is provided that a central compressed air supply is arranged in the machine frame, which is connectable to said drive means for introducing the bead depth. According to a development of the invention, the compressed air supply is provided with connecting means which are switched on and disengaged. This can be realized in particular a sheet rolling machine with a multi-part working head, in which each of the required part of the machining head can be supplied with compressed air.

Further advantageous features emerge from the dependent claims, the following description and the drawings.

Figur 1

schematisch eine teilweise geschnittene Ansicht einer erfindungsgemässen Blechwalzmaschine,

Figur 2

ein Teilquerschnitt durch die Sickenrollen,

Figur 3

ein Teilquerschnitt durch ein bearbeitetes Blech und

Figur 4

schematisch eine räumliche Ansicht einer erfindungsgemässen Blechwalzmaschine nach einer Variante.

Two embodiments of the inventive sheet rolling machine are explained below with reference to the drawing. Show it:

FIG. 1

2 is a schematic view in partial section of a sheet metal rolling machine according to the invention;

FIG. 2

a partial cross section through the bead rolls,

FIG. 3

a partial cross section through a machined plate and

FIG. 4

schematically a spatial view of an inventive sheet rolling machine according to a variant.

In the FIG. 1 Sheet metal rolling machine 1 shown has a machine frame 37 which is provided with a base plate 38 on a building floor and which is provided with wheels 28 for adjusting the sheet rolling machine 1. Arranged at the upper end of the machine frame 37 is a machining head 2 which, as can be seen, projects radially and which has a lower and a fixed bearing block 8 with a lower bead roll 23 and an upper pivotable bearing block 7 with an upper bead roll 24. The two bead rolls 23 and 24 are connected via a lower bead shaft 10 and upper bead shaft 9 with a drive 3, which has an upwardly projecting drive shaft 4 and a gear unit 29. The drive shaft 4 is driven in particular by a motor. The gear unit 29 has a bevel gear pair 5, with which the lower bead shaft 10 is driven. About a Stirnradpaar 6, the rotational movement of the lower bead shaft 10 is transmitted to the upper bead shaft 9. The two bead shafts 9 and 10 are parallel to each other and the directions of rotation and the rotational speeds are the same. The direction of rotation can be changed according to double arrow B.

The upper bearing block 7 is limited pivotable about a horizontal axis of rotation 20. As can be seen, this axis of rotation 20 is arranged at the rear end of the upper bearing block 7. The bearing block 7 can also be adjusted horizontally limited by means of a pivot lever 19 and an eccentric, not shown here in the directions of the double arrow X. The comparatively small adjustment range is for example 2 mm. By means of a clamping lever 21, this adjustment can be fixed. This horizontal adjustment of the upper bearing block 7 is made possible by the pair of spur gears 6, which meshes within the adjustment range.

At the lower bearing block 8, a stop plate 25 is mounted with a guide rod 18, the horizontally in the directions of the arrow V according to an adjustment handle 16 FIG. 2 is adjustable. By adjusting the stop plate 25 which is shown in Figure 2 with b so-called beading meat is set. The dimension b indicates the distance of the inside of the upper bead roll 24 to the guide surface of the stop plate 25. By means of a clamping lever 17, a set dimension b can be fixed. The stop plate 25 serves to guide a sheet to be processed 26. For processing, the sheet 26 is passed in the directions of the double arrow Z between the bead rollers 23 and 24 and thereby the in FIG. 3 shown bead S incorporated. By reversing or switching the direction of rotation B of the two bead shafts 9 and 10 and stepwise adjustment of the bead depth finally the desired depth of the bead is achieved, as for example in FIG. 3 indicated at a machined plate 26a. The two bead rollers 23 and 24 are each releasably attached to the bead shaft 10 and 9 and can be replaced. In principle, other working means for processing metal sheets are also possible here, which are stored in a tool box 27.

For introducing the bead depth a drive A is arranged on the machine frame 37, which has an air pressure cylinder 14 which can be actuated via a switch, not shown here, for example via an electric foot switch. A piston rod 39 of the air cylinder 14 is articulated to a rear fork-shaped end of a lever 11. If the compressed air cylinder 14 is actuated at the said switch, then the piston rod 39 moves upwards until a rotary part 41 mounted on the lever 11 engages on a hand crank 13. The hand crank 13 thus limits the possible pivoting movement of the lever 11 and thus forms a stop. If the lever 11 is pivoted as mentioned, Thus, a nose 11a of the lever 11 moves downward and pivots corresponding to the upper bearing block 7 about the rotation axis 20. Accordingly, the upper bead roller 24 is moved in the direction of the double arrow Y against the retroactive force of a spring element 15 vertically downward against the lower bead roll 23 , In order to move the upper bead roller 24 further downwards and thus to increase the depth of the bead, the hand crank 13 is rotated clockwise. Since the nut 22 preferably has a left-hand thread, thereby the hand crank 13 is moved upward. With the air cylinder 14 so that the lever 11 can be pivoted again by a certain amount, so that the nose 11 a, the upper bearing block 7 moves further down. The depth of the bead can thus be increased by appropriate stepwise rotation of the hand crank 13 in a clockwise direction, until finally the intended bead depths and thus the bead S is reached. If the hand crank 13 is rotated counterclockwise, the hand crank 13 is moved downward. The bead depth is thus reduced accordingly. The position of the hand crank 13 can be indicated by a scale, not shown here, or other suitable means. The hand crank 13 thus forms a stop. It can also be replaced by other suitable means, and means are also conceivable that allow remote operation. For example, the hand crank 13 could be rotated by an electric motor.

The air cylinder 14 thus forms with the lever 11, the drive A for introducing the bead depth. However, the air cylinder 14 could also be replaced by other suitable drive means. A compressed air line 42 which leads to the compressed air cylinder 14 is in FIG. 1 merely hinted.

In the FIG. 4 shown sheet rolling machine 1 'operates essentially However, a machine frame 37 'here is solid and has at least one extendable wheel 30 which, together with the wheels 28, enables a method of the sheet metal rolling machine 1'. On the machine frame 37 ', a turntable 40 is mounted, which has three processing heads 2a, 2b and 2c, which are symmetrically arranged as shown and formed substantially the same. The two corrugation shafts 9 and 10 shown in the machining head 2a, the lever 11, the pneumatic cylinder 14 and the lever 19 and other parts explained above are thus also provided in the machining head 2b and in the machining head 2c. The machining heads 2b and 2c accordingly also have a hand crank 13 or 13 'protruding upward, with which the stop for a corresponding lever 11 can be adjusted. The turntable 40 is rotatable about a vertical axis 43 which extends in the drive shaft 4.

The sheet rolling machine 1 'is provided for a fixed working position, to each of which the desired machining head 2a, 2b or 2c is brought. The bead rollers 23 'and 24' arranged at the machining head 2b are as a rule different from the bead rollers 23 and 24 and this also applies to the bead rollers of the working head 2c, not shown here. These bead rolls can be exchanged, including a tool box 27 is provided in the machine frame 37 '. If the working position is provided at the machining head 2b and the bead rollers 23 and 24 are required for machining the sheet 26, the turntable 40 is rotated counterclockwise by 120 °, so that now the machining head 2a is in the earlier position of the machining head 2b. With a clockwise rotation of 120 °, the machining head 2c can be pivoted to the working position.

So that the turntable 40 can be pivoted, the bevel gear pair 5 must be decoupled. For this purpose, a compressed air cylinder 35 is provided, with which a wedge 36 is horizontally displaceable and thus the bevel gear 5 connected to the shaft 4 can be lowered until it is no longer engaged with the bevel gear attached to the lower bead shaft 10. If the wedge 36 is displaced in the opposite direction, the bevel gear 5, which is displaceably mounted on the shaft 4, moves upwards and thus engages with the other bevel gear. The rotary bearing for the turntable 40 is in FIG. 4 indicated by the reference numeral 34. Such a pivot bearing for the axial and radial guidance of the turntable 40 may be formed in a conventional manner.

In addition to the said decoupling of the gear unit 29, the compressed air line to the turntable 40 and thus to the compressed air cylinder 35 and the corresponding compressed air cylinder 14 is also interrupted. For this purpose, a compressed air cylinder 33 and an index pin 32 are provided, which are mounted below the turntable 40 at the machine position 37 '. The compressed air cylinder 33 can be actuated via a line not shown here with the foot switch 31. Upon actuation, the index pin 32 moves up or down in the directions of the double arrow W. If the index pin 32 is moved down, the compressed air connection to the turntable 40 is interrupted and this can be freely rotated in both directions after decoupling the gear unit 29. If the desired machining head 2a, 2b or 2c is pivoted into the working position, the index pin 32 on the foot switch 31 is moved upward, so that now the compressed air cylinders 35 and 14 are supplied with compressed air. The corresponding compressed air lines to the compressed air cylinders 35 and 14 are not shown in the figure. If the compressed air cylinder 35 is supplied with compressed air, the gear unit 29 can be coupled accordingly by displacing the wedge 36 become. The lines in the turntable 40 are arranged so that only the air cylinder 14 is supplied with compressed air, which belongs to the processing head 2a, 2b and 2c, which is in the working position. The other two compressed air cylinder 14 are not supplied with compressed air. In the arrangement shown in Figure 4, the air cylinder 14 of the processing head 2b is supplied with air pressure. However, the air cylinder 14 of the two processing heads 2a and 2c are not supplied with compressed air, so that with a corresponding actuation only at the two bead rolls 23 'and 24', the corresponding depth of the bead can be introduced. This is also advantageous for safety reasons, since the unneeded seepage rollers do not turn.

The operation of the sheet rolling machine 37 'will be explained in more detail below.

In the home position, the gear unit 29 is disengaged and the index pin 32 is in a lower position. The turntable 40 is now rotated until the desired machining head 2a, 2b and 2c, respectively, is in the desired working position. Is, for example, according to FIG. 4 the machining head 2b after a corresponding rotation of the turntable 40 in the working position, the indexing pin 32 is moved upwards by actuation of the foot switch 31. Thus, the air cylinder 35 and the air cylinder 14 of the processing head 2b are supplied with air pressure. The gear unit 29 can be coupled with it and introduced via a pivoting of the upper bead roll 24 'the set bead depth. By turning the hand crank 13 ', the bead depth is adjusted or adjusted until the desired bead depth is reached. The sheet 26 to be processed is passed between the driven bead rollers, the sheet 26 on the stop plate 25 'is guided. Optionally, the stop plate 25 'and the lower bearing block 8 are adjusted. If another machining head, for example the machining head 2a or 2c, is required, the gear unit 29 is decoupled and the indexing bolt 32 is moved downwards. The turntable 40 can now be rotated freely about the vertical axis 43 until the desired machining head is in the working position. After adjusting the bead depth on the crank 13 and 13 "and corresponding positioning of the stop plate 25 or 25" and an adjustment of the upper bearing block 7 in a direction of arrow X by pivoting the lever 19 of the index pin 32 is moved up and the Gear unit 29 coupled. Thus, the processing of a sheet 26 with the other processing head 2a and 2c is possible.

LIST OF REFERENCE NUMBERS

1

Plate rolling machine

2

Processing head (2a, 2b, 2c)

3

Drive (engine-gearbox unit

4

drive shaft

5

bevel gear pair

6

cylindrical gear

7

Upper storage block

7a

top

8th

Lower storage block

9

Upper bead shaft

10

Lower bead shaft

11

lever

11a

nose

12

pivot point

13

winch

14

Air Cylinder

15

spring element

16

adjustment handle

17

clamping lever

18

guide rod

19

pivoting lever

20

axis of rotation

21

clamping lever

22

mother

23

Lower bead roll

24

Upper bead roll

25

stop plate

26

sheet

27

toolbox

28

bikes

29

gear unit

30

Retractable wheel

31

Foot switch for index pin 32

32

Index pin with compressed air feed-through to the compressed air cylinder 14

33

Air Cylinder

34

pivot bearing

35

Air Cylinder

36

wedge

37

machine frame

38

baseplate

39

piston rod

40

turntable

41

part

42

Compressed air line

43

axis

A

drive means

B

double arrow

X

double arrow

Y

double arrow

Z

double arrow

b

Sick meat

Claims (15)

1. Sheet rolling machine for forming beads, edges and the like on metal sheets (26), having a machine frame (37, 37') and having motor-driven work rollers (23, 24; 23', 24') which are mounted on at least one work head (2, 2a, 2b, 2c) and which can be adjusted relative to one another for the bead depth via adjusting means (11, 13, 14), one work roller (23, 23') being mounted on a fixed support block (8) and another work roller (24, 24') being mounted on a pivotable support block (7), and having drive means (A) for incorporating the bead depth, characterized in that the drive means (A) for incorporating the bead depth have a lever (11) which is pivotably mounted on the machine frame (37, 37') and acts on the pivotable support block (7), said lever (11) being of two-armed design and bearing with a first arm (11b) against the pivotable support block (7) and being connected by the second arm (11c) to a drive member (14).
2. Machine according to Claim 1, characterized in that said lever (11) is pivotably mounted on the machine frame (37, 37') via the pivotable support block (7).
3. Machine according to Claim 1 or 2, characterized in that the lever (11) has a nose (11a) at a front end, said nose (11a) bearing loosely against a top side (7a) of the pivotable support block (7).
4. Machine according to one of Claims 1 to 3, characterized in that the pivotable support block (7) is pressed against said lever (11) by means of a spring element (15).
5. Machine according to Claim 4, characterized in that the spring element (15) is arranged between and supported on the two support blocks (7, 8).
6. Machine according to one of Claims 1 to 5, characterized in that the pivoting capacity of said lever (11) is limited by stop means (13) for setting the bead depth.
7. Machine according to Claim 6, characterized in that said stop means (13) have a hand crank which is mounted in a nut (22).
8. Machine according to one of Claims 1 to 7, characterized in that a rotary table (40) is mounted on the machine frame (37') and has at least two work heads (2a, 2b, 2c), preferably three work heads.
9. Machine according to Claim 8, characterized in that coupling means (32, 33) are provided, with which a compressed-air line can be coupled to the rotary table (40).
10. Machine according to Claim 8 or 9, characterized in that the coupling means (32, 33) have a remotely controllable drive (33).
11. Machine according to Claim 9 or 10, characterized in that the coupling means (32, 33) have an adjustable indexing pin (32).
12. Machine according to one of Claims 9 to 11, characterized in that at least two beading shafts (9, 10) are driven via a gearing unit (29) which can preferably be coupled in a remotely controllable manner via a drive means (35).
13. Machine according to Claim 1, characterized in that at least two work heads (2, 2a, 2b, 2c) are arranged on a rotary table (40), and in that coupling means (32, 33) are provided, with which a compressed-air line can be coupled to the rotary table (40) in at least two rotary positions.
14. Machine according to Claim 13, characterized in that the coupling means (32, 33) are remotely controllable.
15. Machine according to Claim 13 or 14, characterized in that the coupling means (32, 33) have at least one adjustable indexing pin (32).

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