FR2493194A1 - MACHINE FOR SHAPING SHEETS, IN PARTICULAR FOR CUTTING, BENDING AND, IF POSSIBLE, MOLDING - Google Patents

Abstract

THE INVENTION CONCERNS A MACHINE FOR SHAPING SHEETS. THIS MACHINE INCLUDES, FROM BOTTOM UP, A CUTTING DEVICE 14, SLIDING VERTICALLY BETWEEN TWO UPRIGHTS 21, 22, A MAIN DRIVE SHAFT 10, ARRANGED BETWEEN 21 AND 22, AND ACTIVATED BY A MOTOR 12, AND A DEVICE FOR BENDING, INCLUDING SEVERAL CYLINDERS, SUCH AS 48, 49, THE ENDS OF WHICH ARE SUPPORTED BY 21, 22, AND WHICH SHAFT 10 DRIVES THROUGH A TRANSMISSION 16. THIS MULTI-FUNCTIONAL MACHINE CAN BE USED FOR EXAMPLE FOR SHAPING OF SHEET DUCTS ON SITES PART OF SHEET PLATES.

Description

The present invention relates to a machine for shaping sheets,

  comprising a main shaft, which is driven by a motor, provided with an eccentric, and mounted on both sides in lateral uprights of a frame, this main shaft driving a

  division, which consists of several tools for

  page, mounted sliding in vertical slides.

  To form tales, holes in sheet metal pieces and endless tapes are usually cut with cutting tools. Often, other

  on the other hand, the sheet metal parts must be bent to

  curls, and folded or folded. Several machines are required for these operations, namely the cutting device mentioned above, as well as a bending device, constituted by forming rolls, and, in addition, a device for molding, comprising two forming rollers, for the making moldings or

  folds in the sheet pieces. These devices are known.

  The acquisition of several machines, each of which is intended for a single operation, entails high costs for the transport and assembly of several machines, in particular

  on construction sites, also lead to disadvantages.

  the main object of the invention is to allow the realization of a tales shaping machine, which allows to perform the above described operations, including cutting and bending, on a single machine. The new combination of a cutting device and a bending device must allow each operation to be carried out on a single machine under conditions

rational and economic.

  The machine for forming the tales according to the present invention is of the type indicated initially, and is characterized in that a bending device (18) is arranged with its axis parallel to that of the cutting device (14), the cylinders forming (48, 49) of this

  bending device being mounted in the lateral

  Rails above the main shaft (10), and being entraXnés by the main shaft, via a transmission (16) and a disengageable coupling. the machine according to the

  The present invention is distinguished by a simple structure.

  In its bati, the cutting device is placed below the main shaft, and the bending device, above this tree. This gives good accessibility and a small footprint. the bending device is constituted by two forming rolls, which are driven, and by an adjusting cylinder, for adjusting the bending diameter of the sheet metal plates. The lower forming roll can be moved upwards so as to adjust the gap between the rolls for different sheet thicknesses. the freely rotatable adjusting cylinder can be moved with respect to the upper forming roll in order to adjust the diameter

bending.

  The drive of the bending device and the cutting device is produced jointly by the main shaft, which is itself driven by a motor, by

  through a transmission, preferably a gearbox,

  worm swimming. At the opposite end of the main tree

  Another transmission with an accu-

  disengageable for coupling and uncoupling

  forming cylinders, entrained, of the

  tration. It is therefore put into service only when needed.

  To adjust the adjustment cylinder, which can rotate freely, its bearings are movably mounted in slides secured to the frame, and can be moved respectively with the help of rods threaded, which are actuated by a common shaft. The drive of this shaft takes place advantageously via a transmission to

  counting wheel. This offers the advantage of allowing adjustment

  ter by equal degrees the radius of curvature of the sheet metal plates to be bent. This thus facilitates the adjustment of the radius of curvature. On the other hand, the adjustment shaft comprises a coupling between the two threaded rods. this allows

  to bend cone plates of sheet metal. when the coupling

  When the gear is engaged, the diameter of curvature of one of the ends of the sheet metal plate is adjusted first by means of the count wheel transmission. Both ends of the adjustment cylinder are thus

  adjusted for the same diameter. Then, we disengage the

  and, using the count wheel transmission, only one of the ends of the adjusting cylinder is brought into a position which corresponds to a radius other than

  that of the other end of said sheet metal plate.

  It is thus possible to place the adjustment cylinder obliquely

  and imparting to the sheet metal plate a conical bending.

  On the other hand, the end of the upper forming roll, which is provided with a drive pinion, is mounted in a bearing, mounted itself in the lateral upright, so as to be able to pivot about an axis, the other end of said forming cylinder can be tilted out of the corresponding side jamb of the building. This allows to extract the rounded sheet by making

  swing out the forming cylinder.

  The multi-function machine, consisting of a cutting device and a bending device can be completed, according to the present invention, by a device for molding, which is placed in the extension of the main shaft, and whose forming rollers are driven by said main shaft, via a disengageable coupling. As a result, this device for molding is also put into service only when needed, by operating the coupling. In the machine for forming sheet metal according to the present invention, the different devices and drive members are distributed so that the motor and transmission for driving the main shaft

  are on one side of said machine. With its parallel axis

  the cutting device is arranged between the lateral uprights, below said main shaft. On the opposite side to the engine, the main shaft

  not only by means of a coupling

  the transmission for the forming cylinders of the device

  bending, which are arranged above the main tree.

  pal, at which their axes are parallel, but in addition, through another coupling, the rollers of

  forming the device for molding. This device for

  lurer is thus placed in the pronlongement of the main tree, at the other end of the machine. While the main shaft is entrained continuously, the bending device and the molding device are put into service only when needed. Thanks to this spatial distribution of the different elements, the necessary operations can be carried out quickly and rationally,

  while providing the necessary security.

  A preferred field of use of the multi-function machine according to the present invention is the

  insulation technique in pipe construction.

  In this case, the ends of the tale plates which will have to be joined later, are perforated, said teal plates are rounded in sections of pipe, and their transverse edges are provided with moldings. During

  of the assembly, the sections of pipe are riveted and connected

  cast to one another by their moldings. The machine

  several functions according to the present invention are parti-

  well suited to site assembly, so that the completed pipe sections can be made on the premises from the plate itself

delivered there.

  The multi-function machine according to the present invention is mounted on a frame, from which it can be separated

  in a simple way, which makes it possible to transport it without

  blemish in any place of use.

  By way of example, there is described below and illustrated schematically in the accompanying drawing a form of

  embodiment of the machine according to the present invention.

  FIG. 1 is a front view, partly in section, of a machine for stamping tales according to the present invention. Figure 2 is a section along line 2 ^ -2

  of Figure 1 on a larger scale.

  FIG. 3 is a side view, partial, in

  the direction of the arrow 3 of Figure 1.

  Figure 4 is a section of the transmission of

  bending device along the line 4-4 of Figure 1.

  FIG. 5 is a section through an axial plane of the

  device for molding, also on a larger scale.

  Figure 1 shows the association of the different devices. According to this figure, a main shaft (10) is driven by a motor (12) through a worm gear (11). The main shaft (10) itself operates a cutting device (14), as well as

  that, by means of a transmission (16), a

  bending (18) and, secondly, in its

  long side, a device for molding (20). The bending device and the cutting device are

  arranged with axes parallel to that of the main tree.

  cipal (10), the cutting device being placed in

  below said main shaft, and the cinching device

ge, above.

  The frame of the machine is formed by two uprights

  side plates (21 and 22), the ends of which

  The lower sections are joined together by beams (23 and 24). The lateral uprights (21 and 22) are fixed from

  removably on a frame (25) trestle type.

  The cutting tools (26) are fixed on a

  continuous cutting beam (28), maintained, for

  see how to move vertically between

  seats (29 and 30), fixed to the lateral upright (22), (Figure 2), on the lateral upright (21) are also fixed slides for guiding the cutting beam (28) of which only the slide (31) is visible in Figure 1. Guide sleeves (32) are provided in the beam (23) for the cutting tools (26). Dies (34) are provided in the beam (24). Sheet metal plates are

  engaged in the direction of the arrow (36) and drilled,

  not shown being provided for said plates.

  The cutting beam (28) is driven by means of yoke-shaped parts

  (37 and 38), which surround the main shaft (10) at

  Veaude its eccentric portion, located between the two lateral uprights (21 and 22), and which are integral with said cutting beam (28). On the other hand, a bearing shell (40), which wraps the eccentrically shaped portion of the main shaft (10) at the bottom, is attached to the punch beam (28) at each of the coins shaped like yoke. When the main shaft (10) rotates, each piece shaped yoke, and

  as a result also the cutting device, are involved

  born through its eccentric-shaped part,

  which communicates to them vertical alternative movements.

  To bring the cutting beam into an initial upper position, for the purpose of drilling sheet metal plates, a limit switch (45) is provided,

  which is actuated by a cam (46) fixed on the main shaft

  cipal (10); this limit switch (45) stops the motor (12) when the extreme upper position is

  reached. when the engine (12) is switched on, the

  the limit switch (45) is short-circuited briefly, so that the main shaft (10) begins to rotate, and

  after one round, he is stopped again when the switch

  end switch (45) is actuated again by the cam (46). If it is against the bending device (18) or the molding device (20) to be driven, the limit switch (45) is disabled by a switch device, not shown, such so that the main shaft (10) is driven from

continuous way.

  The bending device (18) is constituted by a lower forming roll (48) and an upper forming roll (49), as well as a roll of

  setting (50), which is not visible in Figure 1.

  As shown in FIG. 2, the rounding plate is engaged in the direction of the arrow (51) between the upper and lower forming rolls and exits the bending device in the direction of the arrow (52) between the upper forming roll (49) and the adjusting roll (50), whose height displacement makes it possible to adjust the radius of curvature of the curved tale. In order that the rounded metal part, which winds around the upper forming roll (49), can be disengaged from said forming roll (49), the latter is pivotally mounted to be pivotally disengaged from the forming roll (49). lateral amount (22). For this purpose, the left trunnion (54) of the forming cylinder (49) is arranged, with the drive pinion (55), in a block (56), which is pivotally mounted about a vertical pin (58). . In the lateral upright (22), on the other hand, the bore of the bearing (60) opens into an outwardly facing slot (61), and the pin (62) of the forming cylinder (49) has an extension provided with

a handle (64).

  As results from FIG. 3, there is provided on the lateral upright (22) a pivoting lever (65), which

  has a jaw-shaped end (66), where

  pledge the pin (62). When the lever (65) is in the position shown in Figure 3, it is possible to disengage the forming roll through the slot (61) and extract the rounded piece of said forming roll, in the direction axial. Then, the forming cylinder is reintroduced through the slot (61), and the lever (65) is pivoted by one hundred and eighty degrees, so that the pin (62) is locked by the portion

rounded (67) of said lever (65).

  The lower forming roll (48) has its two ends mounted adjustably in the side posts (21 and 22). The ends of the forming roll (48) are each arranged in a pivoting bearing (70)

  around an axis (69). By operating one of the adjustment screws

  ge (68), which acts on the bearing of the forming roll (48), so as to rotate it about the axis (69), it is possible to

  adapt the gap between the cylinders to metal sheets

different thicknesses.

  The displacement in height of the adjusting cylinder (50) is also visible in FIG. 2. On the lateral wall (22) are fixed, at a certain distance from each other, two parallel rails (72 and 73), between it is movably mounted a bearing (74) for said adjusting cylinder (50). Deflection is obtained by means of a threaded rod (76), whose rotation is produced by means of a helicoidal gear (78), which is

  maintained, on both sides, between stops (79 and 80).

  the helical pinion gear (78) meshes with a second helicoidal tooth gear (82), which is keyed on an adjusting shaft (84), which is actuated by a

  counting wheel mechanism (88).

  when the counter wheel mechanism (88) is rotated, the adjustment shaft (84) is also

  rotated with a certain report of demetri

  plication, and through the gear wheel

  coil (82), it drives the helical gear pinion

  dale (78), screwed on the pinned rod (76). Oette stem

  The turret (76) rotates and then moves the bearing (74) of the adjusting cylinder along the slideways (72, 73) upwardly or downwardly. displacemnit the cylinder of xegla

  (50) determines the radius of curvature of the tale to be rounded.

  The adjustment can be made in a regular manner using the scale 90 (Figure 3) of the counting wheel mechanism. The adjusting shaft (84) also drives a displacement device, of the same constitution, which is fixed to the lateral upright (21) and which has not been shown in detail. In this way, the adjusting cylinder (50) is

  moved with its axis parallel to those of the cylinders of

  mage. The adjustment shaft (84) can, however, be disengaged.

  connected by means of an acceuplement (92), such that after adjustment of the left end of the adjusting cylinder (50), said coupling (92) is uncoupled, and the right end of said cylinder of setting can be

  adjusted for another radius of curvature.

  Figure 4 shows the mechanism for driving the bending device (18). The pinion (55), which is integral with the upper forming roll (49), is driven by the pinion (95), while a pinion (96), integral with the lower forming roll (48), is driven by a pinion (97) rotating at the same speed, and that the adjusting cylinder can rotate freely, that is to say without being driven. The drive of the common gear (97) is produced by a pinion (98) fixed on the main shaft (10), by means of a coupling pinion (99); It is mounted on the transmission housing (101) via an eccentric (100), which a coupling lever (102) is able to rotate to bring the coupling gear ( 99) on or off

  with the pinion (98) fixed on the main shaft (10).

  Figure 5 shows the details of the molding device (20). A forming roller (105) is wedged on a

  shaft (106), which is mounted in the housing (108) of the

  molding machine (20). The main shaft (10) has an extension, which can be driven with the shaft (106) via a claw coupling (110), the movable portion (111) of which can be moved to using an operating lever (112), in and out of engagement with

  the coupling part, fixed on the main shaft (110).

  The drive of the upper shaft (114), associated with the upper forming roller (115), is carried out using gears (116, 118). The shaft associated with the upper forming roller (114) is movable in the axial direction; on the other hand, its distance to the shaft associated with the lower forming roller (106) is adjustable. For this purpose, the shaft (114), associated with the upper forming roller, is mounted in a housing (120), which can be moved and locked in the axial direction via a displacement axis (122). . It is thus possible to adjust for example the width of the fold. The setting of the upper forming roller (115) relative to the lower forming roller (105) is effected by means of a threaded rod (125) which is rotated by means of a crank (126). relative to the cylindrical portion (128) of the molding device. The end of the threaded rod (125) presses on a displacement piston (130), which is guided

  in the cylindrical part (128), which produces the adjustment

  in height of the shaft (114) associated with the upper forming roller. The housing (120), movable and adjustable, of the shaft (114) associated with the upper forming roller, is reduced by

  a spring (131) in its upper position.

Claims (15)

  1. Machine for forming sheets, comprising   a main shaft, which is driven by an engine,   seen from an eccentric, and mounted on both sides in lateral uprights of a frame, this main shaft driving a cutting device, which is constituted by a plurality of cutting tools, slidably mounted in vertical slideways, machine characterized in that that a bending device (18) is arranged with its axis parallel to that of the cutting device (14), the forming rolls (48, 49) of this bending device being mounted in the lateral uprights above the main shaft (10),   and being driven by the main shaft, through   of a transmission (16) and a loose coupling yable.   2. Machine according to claim 1, characterized in that a motor (12), provided with a transmission (11) for driving the main shaft (10), is placed at the end of said main shaft (10), which is opposite to the transmission (16) for driving the bending (18).   3. Machine according to any one of the claims   1 and 2, characterized in that the forming rolls (48) of the bending device (18) are driven by pinions, which can be coupled with a fixed pinion on the main shaft (10).   4. Machine according to claim 3, characterized in that it comprises a pinion (99), which can be coupled   with the pinion (98) fixed on the main shaft (10).   5. Machine according to any one of the claims   1 to 4, characterized in that it comprises, behind the forming rollers (48, 49), in the direction of advance, an adjusting cylinder (50), which is freely rotatable, and which can be moved, relative to the upper forming roll (49), to adjust the radius of curvature of the bending sheet.   6. Machine according to claim 5, characterized in that the bearings of the adjusting cylinder (50) are movably mounted in slides (72, 73) integral with the btti, and they can be moved respectively with the help of rods threaded (76), which are actuated by a shaft common setting (82).   7. Machine according to claim 6, characterized   in that the adjustment shaft (82) is driven by the   associated with a count wheel transmission (88).   8. Machine according to any one of the claims   6 and 7, characterized in that the adjusting shaft (82)   has a coupling (92) between the threaded rods.   9. Machine according to any one of the claims   5 to 8, characterized in that the end of the upper forming roll (49), which is provided with a drive pinion, is mounted in a bearing (56), which is itself mounted in the post laterally rotatable about an axis (58), the other end of said forming cylinder being swingable out of the upright corresponding lateral.   10. Machine according to any one of the claims   1 to 9, characterized in that it comprises a provision   molding machine (20), which is arranged in the   of the main shaft (10), and of which rollers of   mage (105, 115) are driven by the main shaft (10)   via a disengageable coupling (110).   Machine according to claim 10, characterized   in that the molding device (20) is fixed to the housing (101) of the gear transmission (16)   for driving the bending device (18).   12. Machine according to any of the claims   cations 10 and 11, characterized in that the lower shaft (106), which carries a forming roller of the molding device, is driven directly by the main shaft, and via a coupling (110), while the upper shaft (114), which carries the counter-roller of   forming (115), is driven by the lower shaft, by the intermediate of gears (116, 118).   13. Machine according to any one of the   10 to 12, characterized in that the upper shaft (114) is axially slidable and the distance between its axis and that of the lower shaft (106) is adjustable.   14. Machine according to any one of claims 10 to 13, characterized in that the coupling (110) is a claw coupling.   15. Machine according to any one of the   cations 1 to 14, characterized in that the lateral amounts   (20, 21) are joined by beams (23, 24) and   removably secured to a frame (25).