KR101139609B1 - Method and device for dismantling the straightening assemblies of a multiroll straightener - Google Patents

Abstract

The invention relates to a method and a device for dismantling the straightening assemblies (1, 1') of a machine for straightening a flat object, comprising a lower assembly (1') and an upper assembly (1) each forming a removable cartridge. According to the invention, the two straightening assemblies (1, 1') are removed from the frame separately as follows: the couplings (14') of the lower extension bars (36') are locked at a first level (H1), the lower cartridge (1') is removed by axially sliding same onto a withdrawal platform (4), and the lower cartridge (1') is conveyed into a maintenance position; a dismantling carriage (5) supporting the upper carriage (1) is deposited on the withdrawal platform (4)and inserted into the frame (3); the couplings (14) of the upper extension bars (36) are locked at a second level (H2), the upper carriage (1) is unlocked, the pressure frame (34) is raised and the carriage (5) supporting the upper carriage (1) is withdrawn onto the withdrawal platform (4), whereafter the upper carriage (1) is conveyed into a maintenance position.

Description

METHOD AND DEVICE FOR DISMANTLING THE STRAIGHTENING ASSEMBLIES OF A MULTIROLL STRAIGHTENER}

The present invention relates to a method and apparatus for dismantling a straightening assembly of a straightener of a flat product such as a metal strip or plate.

In particular, with regard to the straightening of flat products such as rolled metal strips or sheets, a multi-roll comprising two straightening assemblies each having a plurality of rolls with parallel axes and disposed respectively above and below the feeding plane of the strips. It is common to use what are referred to as straighteners, wherein the parallel axes are staggered in the feeding direction to be engaged to form the wave-like traveling path of the strip, thus forming an alternating direction in the strip. A tension / bending effect is applied.

Such straighteners have been known for a long time and have been described in many literatures.

In general, each straightening assembly consisting of a lower straightening assembly and an upper straightening assembly typically comprises a plurality of rolls having parallel axes of small diameter, and is thus supported by two or more individual support rolls, The individual support rolls themselves can be placed on a row of rollers, with the entire group of these rolls and rollers assembled on the chassis.

These two straightening assemblies, each of which is disposed above and below the horizontal feeding plane of the strip, are disposed in a support frame comprising two pillars spaced on each side of the longitudinal axis of the strip feeding, the two pillars being fixed to the fixed beam. By means of the lower part and by the crossing beam in the upper part, the entire group of which forms a closed frame. The lower assembly is placed on the stationary beam and the upper assembly is placed on the pressure frame, and the upper assembly controls the separation of the two straightening assemblies to adjust the interlocking of the rolls against the separation forces caused by the resistance of the product. It can be moved vertically by a mechanical or hydraulic jack disposed on the upper part of the frame.

Typically, at least a portion of the straightening roll is driven to rotate about its axis for the purpose of advancing the strip by friction at a predetermined speed along a wave-like traveling path between the upper roll and the lower roll.

As a result, the straightening rolls wear and must be replaced periodically with new rolls. During this replacement operation, the machine must be stopped, and in order to reduce this period of suspension, each of the two straightening assemblies, ie the upper straightening assembly and the lower straightening assembly, can each be removed entirely from the machine and be replaced with new or at least remanufactured. It can be immediately replaced with an assembly having a ground roll, and the worn assembly is transferred to a workshop or simply a maintenance area where the various maintenance work required is performed.

Conventionally, each straightening assembly forms a cartridge fixedly detachably on the lower beam or on the pressure frame so that it can be removed from the frame and replaced with another cartridge having a new assembly.

It is also an attractive proposal to remove two straightening assemblies simultaneously, wherein the chassis of the upper assembly is placed on the chassis of the lower assembly by a choke that can prevent contact between the rolls. Thus, the entire group of two assemblies can be removed from the support frame by rolling the lower assembly on the rail orthogonal to the feed axis.

However, in another device disclosed, for example, in DE-A-2 131 739, the two straightening assemblies are arranged with respect to the sides of the machine, each consisting of a high level for accommodating the upper assembly and a low level for accommodating the lower assembly. It is removed individually by rolling each on the transverse rails so as to be disposed on a support cradle which may occupy two levels.

On the other hand, as described above, at least some of the straightening rolls are centered around their axes to advance the product by friction at a predetermined speed while following a wave-like traveling path that causes straightening by the tension / curve effect in the alternating direction. It should be driven to rotate.

To this end, the drive device arranged on one side of the machine comprises one or more motors for driving one or more reducers, the one or more reducers distributing rotational torque to the lower and upper different work rolls, respectively, through the lower and upper extension bars. The gear box is operated at a predetermined speed, and the lower and upper extension bars are connected to the output of the gear box on one side and connected to the end journal of the straightening roll by means of a coupling device in the form of a universal joint on the other side to adjust the engagement. So that at least the level of the upper roll can be changed.

In order to dismantle the straightening assembly, each end of the roll must be connected to the corresponding extension bar by a removable coupling mechanism. For example, in the device of document DE-A-2 131 739, each extension bar is connected to the end of the corresponding roll by means of a universal joint connection, which universal joint connection is detachably connected to each other and into recesses and protrusions. A claw coupling mechanism consisting of two mating portions implemented.

In this type of device, for the purpose of dismantling the upper assembly, the upper extension bar is decoupled and placed on the lower extension bar. For assembly, after repositioning the upper assembly on the pressure frame, the upper extension bar needs to be raised to place them at the level of the corresponding roll and to perform the coupling. This type of work is quite difficult and usually has to be done manually, some of which are relatively dangerous given the dimensions of the elements to be handled and the nature of the machine.

Likewise, when the upper assemblies are placed on the lower assembly for their simultaneous withdrawal, a choke or "props" that needs to be positioned by the operator needs to be inserted between the chassis of the two assemblies.

In addition, for installations of the type disclosed in document DE-A-2 131 739, the operator likewise intervenes in a position very close to the machine for the purpose of positioning the dismantling cradle at a high or low level for disassembly of the upper or lower assembly. must do it.

Finally, it is necessary to ensure that the upper assembly is detachably fixed on the pressure frame. In the case of document DE-A-2 131 739, the fixing of the upper assembly to the pressure frame is carried out by hooks, the rotation of which can be controlled remotely, but this type of fixing method can cause the hooks to slip. It is not completely safe.

For example, in another device disclosed in document DE-A-197 05 457, the chassis of the upper assembly is mounted on the pressure frame by bolts, which are mounted to pivot about a horizontal axis, each of which has a nut which tightly presses a spring washer. Is fixed to. This type of device also involves operator intervention in a position very close to the machine for positioning and tightening the bolts.

The present invention is a new method that enables the disassembly and reassembly of the straightening assembly, consisting of upper and lower portions, respectively, performed by simple means that can be controlled both remotely and automatically without the operator intervening in the vicinity of the machine as much as possible. It provides a solution to the above problems.

Likewise, the present invention relates to a novel apparatus that enables this method to be employed.

Accordingly, the present invention generally applies to disassembling and reassembling a straightening assembly of a machine for straightening flat objects, the machine comprising:

Means for controlling the feeding of the product along the longitudinal axis in the feeding plane,

A fixed support frame having two pillars spaced on each side of the longitudinal axis, between which two pillars are mounted such that the pressure frame slides vertically;

Two straightening assemblies, a lower assembly disposed on a fixed beam and an upper assembly disposed on a pressure frame, each straightening assembly being arranged to rotate on the chassis about an axis perpendicular to the longitudinal feeding axis. Two straightening assemblies, forming a cartridge comprising a roll spaced apart,

Means for removably securing the chassis of the upper assembly on the pressure frame,

Means for vertically moving the pressure frame to adjust the engagement of the rolls of the two assemblies,

Means for rotationally driving a roll disposed on one side of the frame and connected to at least some of the rolls by an extension bar, the first end of the extension bar being driven to rotate, the second end of the extension bar being for driving the roll Means for rotationally driving a roll having a removable coupling mechanism with an end, the extension bar being arranged at two levels, a lower level coupling with the roll of the lower assembly and an upper level coupling with the roll of the upper assembly; and,

Means for dismantling the straightening assembly by movement of each cartridge perpendicular to the feeding axis between the working position inside the frame and the draw position laterally spaced on the side of the frame opposite the drive side.

According to the invention, the two straightening assemblies are

Locking the coupling ends of the entire group of lower extension bars at the first level of dismantling the lower assembly,

Withdrawing the lower cartridge by sliding on the same level perpendicular to the feeding axis up to the withdrawal platform disposed on one side of the frame opposite the drive side;

Returning the lower cartridge to the maintenance position;

Loading the dismantling carriage on the withdrawal platform,

Introducing a dismantling carriage into the frame by sliding on the same level perpendicular to the feeding axis;

Lowering the pressure frame to load the upper cartridge onto the dismantling carriage;

Locking the coupling end of the upper extension bar at a second level of dismantling the upper assembly,

Opening the removable means to secure the upper cartridge on the pressure frame,

Raising the pressure frame,

Withdrawing the upper cartridge by sliding perpendicular to the feed axis from the dismantling carriage on the same level to the withdrawal platform,

Positioning the upper cartridge in the maintenance position, the two straightening assemblies being removed from the frame separately.

In a particularly advantageous manner, after repair or replacement,

Loading a new top cartridge into a dismantling carriage disposed on the withdrawal platform,

Introducing the upper cartridge into the frame by a transverse slide from the dismantling carriage at the same level with the driving end of the upper roll engaging in the coupling mechanism of the upper extension bar locked at the second level for dismantling;

Closing the removable means for securing the upper cartridge on the pressure frame,

Unlocking the upper extension bar;

Raising the pressure frame with the upper cartridge and the upper extension bar,

Withdrawing the dismantling carriage by sliding across the withdrawal platform;

Removing the dismantling carriage from the withdrawal platform,

Loading a new lower cartridge on the withdrawal platform,

Introducing the lower cartridge into the frame by transversal sliding at the same level with the driving end of the lower roll engaging in the coupling mechanism of the lower extension bar locked at the first level for dismantling. The ning assembly is positioned in the frame.

In a known manner, the beam and take-out platform have aligned guide rails orthogonal to the feeding axis for sliding the lower cartridge and dismantling carriage at the same level, respectively.

In a preferred embodiment, the locking of the extension bars consisting of an upper extension bar and a lower extension bar for dismantling the straightening assembly raises the lower crossbar to a point of contact with the entire group of lower extension bars to receive the lower extension bar; Positioning the intermediate crossbar over the lower extension bar;

Clamping the coupling end of the lower extension bar between the lower crossbar and the intermediate crossbar to lock the lower extension bar at a first level for dismantling; lowering the upper cartridge onto the dismantle carriage; Contacting the coupling end of the bar, lowering the upper crossbar to the point of contact with the coupling end of the upper extension bar,

Clamping the upper coupling end between the intermediate crossbar and the upper crossbar to lock the upper extension bar at a second level for dismantling.

According to another preferred feature, after contacting the lower crossbar with the end of the lower extension bar of the lower cartridge, the position of the lower crossbar corresponding to this first level at the first level for disassembly is recorded, and the intermediate crossbar and the lower extension bar The entire group of lower crossbars, together with the ends of the, are raised to the point of contact of the end of the upper extension bar and the intermediate crossbar at the second level for dismantling of the upper cartridge disposed in the dismantling carriage, and the upper coupling at the second level for dismantling. After reassembly of the upper cartridge by engagement of the instrument, the entire group of lower crossbars, together with the ends of the intermediate crossbar and the lower extension bar, have been previously recorded to disassemble the lower cartridge on the beam by the engagement of the lower coupling ends. Return by moving the lower crossbar to the first level for.

The invention also relates to an apparatus for dismantling a straightening assembly of a straightening machine,

Means for controlling the feeding of the product in the longitudinal axial direction along the feeding plane,

A fixed support frame having two pillars spaced on each side of the longitudinal axis,

Two straightening assemblies, a lower assembly disposed on the fixed beam and an upper assembly disposed on the pressure frame, each straightening assembly arranged to rotate on the chassis about an axis perpendicular to the longitudinal feeding axis. Two straightening assemblies, forming a cartridge comprising a roll spaced apart,

Means for removably securing the chassis of the upper assembly on the pressure frame,

Means for vertically moving the pressure frame to adjust the engagement of the rolls of the two assemblies,

Means for rotationally driving a roll disposed on one side of the frame and connected to each roll by an extension bar, the first end of the extension bar being driven to rotate, the second end of the extension bar being an end for driving the roll; Means for rotationally driving the roll having a removable coupling mechanism, wherein the extension bar is arranged at two levels, the lower level coupling with the roll of the lower assembly and the upper level coupling with the roll of the upper assembly;

Means for dismantling the straightening assembly by moving each cartridge perpendicularly to the feed axis between the draw position laterally spaced apart from the side of the frame opposite the drive side and the working position inside the frame.

According to the invention, the device is

A withdrawal platform having a first sliding groove arranged on the frame side opposite the drive side and aligned with a second sliding groove embodied in the beam, wherein the first sliding groove and the second sliding groove are orthogonal to the feeding axis; Withdrawal platform,

Can be moved by sliding on a second sliding groove aligned at the same level and aligned at the same level and then sliding on the first sliding groove aligned at the same level to be mounted on the withdrawal platform instead of the lower cartridge to engage on the beam inside the frame A dismantling carriage, the dismantling carriage receiving the upper cartridge after opening of the removable means and securing the upper cartridge to the pressure frame;

Means for locking the coupling end of the lower extension bar at a first level for dismantling the lower cartridge,

Means for locking the coupling end of the upper extension bar at a second level of dismantling the upper cartridge disposed in the dismantling carriage.

In a preferred embodiment, the means for locking the coupling ends of the lower extension bar and the upper extension bar comprises two plates, a lower plate and an upper plate, and an intermediate plate,

The two plates are mounted to extend across the axis of the roll above and below the feed plane of the product and to slide vertically on the drive side of the support frame,

The intermediate plate is generally disposed at the level of the feeding plane of the product, the intermediate plate is movable between a locked position and a laterally separated position extending across the axis of the roll,

Means for vertically moving the lower plate to receive and clamp the coupling end of the lower extension bar between the lower plate and the intermediate plate;

And means for vertically moving the upper plate to receive and clamp the coupling end of the upper extension bar between the upper plate and the intermediate plate.

Advantageously, the means for vertically moving the bottom plate is a jack arranged in the beam, preferably a mechanical jack.

According to another preferred feature of the invention, the intermediate plate is provided with two parts each pivotally mounted at two pivots arranged on each side of the feed axis of the product, such that the two parts of the intermediate plate form one plate. And means for controlling the pivot of the two parts between the locked position and the disengaged position aligned transversely with respect to the feeding direction.

According to another preferred feature of the invention,

The means for vertically moving the upper plate comprises two pairs of hydraulic jacks each disposed on each side of the feeding axis of the product, the two pairs of hydraulic jacks being connected to one end of the lower plate and the body fixed to the support element of the intermediate plate. Each comprising two jacks extending in opposite directions consisting of a lower jack with a spindle disposed thereon and an upper jack with a spindle disposed at one end of the upper plate and a body fixed on a support element of the intermediate plate, The lower jack is used to clamp the end of the lower extension bar between the middle plate and the lower plate, and the upper jack is used to clamp the upper plate onto the end of the upper extension bar held by the middle plate and the lower plate.

According to another preferred feature of the invention, the dismantling device comprises a single means for moving across the feed axis, which can be detachably fixed to the lower cartridge or dismantling carriage.

Also in a particularly advantageous manner, the means for detachably securing the upper assembly on the pressure frame

Two or more hooks mounted to rotate between a disengaging position for positioning the upper assembly below the pressure frame about the horizontal axis of the pivot on the pressure frame, respectively, and a locking position where each hook is placed under the hook block of the chassis of the upper assembly. Wow,

Means for controlling the pivot of the hook from the disconnected position to the locked position,

The pivot means causes a slight rise of the horizontal axis of the end of the hook and the pivot for the purpose of clamping the chassis of the upper assembly against the lower face of the pressure frame at the end of the pivot process.

Preferably,

Each hook pivots about an upper axis mounted to slide vertically on the pressure frame,

The means for controlling the pivot of each hook comprises a first element disposed in the pressure frame and a second element disposed at one end of the lever,

The lever is mounted to rotate on the pressure frame at the other end and articulated about a central axis on the hook such that the rotation of the lever causes the hook to pivot with the elevation of the upper pivot axis, at the hook position below the hook block. After passing through the end of the hook, the upper, central and lower axes are roughly aligned to have a reinforcement effect along the line passing through the hook block, and the hook is mounted to slide along an axis oriented towards the upper axis of the articulation of the hook. And a compression spring inserted between the enlarged head of the support element and the end of the hook.

Other advantageous features will become apparent from the description in accordance with the specific embodiments shown in the accompanying drawings and presented by way of example.

1 is a schematic side view of a multi-roll straightener.

2 is a schematic front view of the straightener.

3 schematically shows the driving of the straightening roll.

4 is a detail view of the driving end of the roll.

5 is a side view of the securing mechanism for the upper assembly in an open position.

6 is a side view of the securing mechanism for the upper assembly in a closed position.

7 is a partial perspective view of a fixing mechanism for the upper assembly.

8 is a general perspective view of the entire installation.

9 schematically depicts several steps of a method for dismantling a straightening assembly according to the invention.

10-13 schematically illustrate side views of the position of various instruments of the device during disassembly of the straightening assembly.

14 is a partial perspective view of the means for locking the drive extension bar.

15-18 show a front view of the position of the means for locking the extension bar during disassembly of the straightening assembly.

19 is a partial plan view of the pivot means of the intermediate plate;

1 and 2 schematically show a side view and a front view of an entire multiroll straightener, wherein the multiroll straightener generally includes two straightener assemblies, the two straightening assemblies comprising a support frame ( 3) it consists of an upper assembly 1 and a lower assembly 1 'which are arranged on each side of the horizontal feed plane P of the flat product M from the inside, and the support frame 3 comprises two pillars 31, 31 '), wherein the pillars are disposed separately on each side of the longitudinal feed axis O of the flat product M and on a fixed beam 32 disposed on the base block at its base. It is fixed at and connected to the top by a cross beam 33.

As shown in FIG. 8, for example, each pillar of the frame 3 may consist of two separate columns 31a, 31b, 31 ′ a, 31 ′ b connected by transverse beams 33, 33 ′. have.

The upper assembly 1 comprises a plurality of straightening rolls, wherein the axes are parallel and spaced apart from each other and at least disposed on the support roll 12, the plurality of straightening rolls being the chassis 10. Is mounted to rotate about its own axis, and the chassis 10 is disposed on the pressure frame 34 and detachable to the pressure frame by fastening means 2 shown in detail in FIGS. 5-7 and described below. Is connected. The level of the pressure frame 34 and thus the level of the upper straightening assembly 1 can be adjusted by a mechanical or hydraulic jack 30, jack arranged in the transverse beam 33. These jacks are single-acting and the lift of the pressure frame 34 to the open position is preferably controlled by the return movement jack 30 '.

Similarly, the lower assembly 1 ′ has a plurality of straightening rolls 11 ′ disposed on the support roll 12 ′, which rolls on the support chassis 10 ′ disposed on the beam 32. Is mounted to rotate about its parallel axes.

The upper straightening roll 11 and the lower straightening roll 11 ′ are longitudinally staggered to form a undulating course of the strip and the engagement of the upper and lower straightening rolls is It can be adjusted by the jack 34 '.

All such devices that can form the subject matter of modification are known and need not be described in greater detail.

In particular, in order to achieve the desired tension / bending effect on the article M, the article must be fed longitudinally between the rolls, for which the article must be at least part of the straightening rolls 11, 11 ′. Driven by friction, the straightening roll is driven to rotate by, for example, a motorized unit comprising one or more motors 35a for driving one or more reducers 35b in a manner schematically illustrated in FIG. The speed reducer has two ends of the end journals 13, 13 'of the straightening rolls 11, 11' on one side and the gearbox 35c on the other side by means of universal jointed connections 37, 37 '. One or more gear boxes 35c for distributing torque to the various upper work rolls 11 and the lower work rolls 11 'by means of an upper extension bar 36 and a lower extension bar 36' which are respectively connected to the outputs. Works at speed.

Typically, a machine for straightening thick sheets or strips comprises from seven to eleven straightening rolls as the case may be. For example, in the manner shown in the figures, the upper assembly may have five rolls 11 and the lower assembly may have six rolls 11 '.

This type of machine applied to wide and thick plates or strips can have a mass of 300 metric tons or more and a height of 10 meters or more, and the straightening assembly can itself have a mass of tens of metric tons. .

As described above, during the straightening operation, the roll has a major surface pressure that requires refurbishment of the roll, such as machining by grinding of the active surface of the roll in a maintenance workshop. Stress and wear phenomena occur.

Thus, the straightening assembly must be able to be dismantled, for which the respective universal jointed joints 37, 37 ′ disposed at the ends of the extension bars 36, 36 ′ are removable coupling mechanisms 14, 14 ′. Is connected to the journals 13, 13 ′ of the work rolls 11, 11 ′, and the coupling mechanism is joined by an axial slide to the journal of the roll on which the corresponding flute is installed in the example shown. It may be a sleeve formed with a groove on the inside.

Further, as illustrated in DE-A-2 131 739, the upper straightening assembly 1 and the lower straightening assembly 1 'can be laterally separated from the operator side after uncoupling of the extension bar. Each cartridge is formed which can be mounted to slide on a transverse rail (not shown) embodied on the support frame 3.

After repair, each of the lower assembly 1 ′ or the upper assembly 1 needs to return to the straightening position inside the roll stand 3 to restore the coupling between each straightening roll and the corresponding extension bar.

As mentioned above, this type of operation so far requires the operator to be present in the vicinity of the machine to perform the disassembly and reassembly of the universal jointed connection and extension bar on the driving end of the roll.

One object of the present invention is for the operator to automatically dismantle and reassemble the cartridge without manual intervention in the vicinity of the machine.

For this purpose, the coupling of the extension bars 36, 36 ′ to the straightening rolls 11, 11 ′ and the means 2 for detachably securing each upper assembly 1 to the pressure frame 34 is provided. The means 14, 14 ′ are for the upper straightening assembly 1 on the pressure frame 34 by means of the safety of the work for replacement of the assembly and the removable fixing device 2 shown in detail in FIGS. 5 and 6. It is configured such that the operator can be controlled remotely without intervening in the vicinity of the machine in such a way that the reliability of the operation of locking or unlocking the device is guaranteed.

The chassis 10 of the upper assembly 1 is held at each side in the manner shown schematically in FIG. 2, for example by four fastening devices 2 and attached to the lower surface of the pressure frame 34.

As shown in FIGS. 5 to 7, each fixing device 2 has a separate position for positioning the cartridge 10 shown in FIG. 5, and the end 210 of the hook 21 has an upper assembly 1. Between the locking positions shown in FIG. 6 after engaging under a locking block 101 implemented in a support portion in the form of a bracket 102 extending outwards as a protrusion to the lateral side 103 of the chassis 10 of And hooks 21 mounted to pivot about a horizontal axis 211.

The pivot of the hook 21 is controlled by the articulation device 22, one side of which is disposed on the lateral side 340 of the pressure frame 34 about the axis of the articulation 231 and the other side of the articulation device 22. It is operated by a jack 23 arranged in a crank 232 which is rotationally fixed to a shaft 233 which operates the device 22 of the hook 21.

In the preferred embodiment shown in perspective view in FIG. 7, the hook means 2 operate in pairs, with the same jack 23 arranged between two hooks 21a and 21b simultaneously operated by the central crank 232. do.

Thus, the articulation device 22 comprises a crank 221 which is rotationally fixed by the shaft 233 with a central crank 232 for each hook, one end of which is angled by the connecting rod 222. Connected to a first arm of the lever 223, the second arm of the angled lever is articulated about a fixed axis 224 and a central portion of the angled lever is hooked about a central axis 213. Articulated).

Two axes of the joint, each of which is an upper axis 233 of the crank 221 and a lower axis 224 of the lever 223, are fixed to the lateral side 340 of the pressure frame 34, and consequently, by a certain distance Spaced vertically. In addition, the crank 221 and the angled lever 223 each form a strap disposed on the side of the hook 21, the hook 21 being secured to the lateral side 340 of the pressure frame 34. A bolt with an upper end articulated about an axis 211, mounted on a slide block 212 guided vertically by a slot embodied in the two wing portions of the support strap 341 to 22. Extend vertically between the lower ends 210. In addition, the hook 21 is articulated about the horizontal axis 213 at the central portion of the angled lever 223, the axis 213 is parallel to the crank 221 the upper arm of the angled lever 223. And the entire group forms a parallelogram that can be adjusted by the connecting rod 222.

Thus, due to the rotation of the crank 232 controlled by the jack 23 and transmitted to the crank 221 by the shaft 233, the vertical movement of the central axis 213 and the upper pivot axis of the hook 21 ( By the sliding block 212 with 211, the arm 223 of the angled lever disposed on the fixed shaft 224 is rotated by the same angle, where the central shaft 213 is fixed to the fixed lower shaft 224. It is arranged on a vertical line between the sliding upper shaft 211.

Thus, the articulation device 22 has a hook 21 at the end of the rotation process where the lower end 210 forms a bolt and engages from below in the bracket 102 of the chassis 10 of the upper assembly 1. ) Is controlled to rise slightly, and at the end of the rotation process, the locking block 101 is pushed upwards so that the chassis 10 can be firmly attached to the lower portion of the pressure frame 34.

In addition, the three axes of the device joint are arranged vertically to ensure the passage of a point of balance with a buttressing effect by the knuckle joint which prevents accidental unlocking.

The lower end 210 of the hook 21, which forms the bolt, slides with an enlarged head disposed under the locking block 101 while compressing an elastic mechanism 215 such as, for example, Belleville washers. A support element 214 is provided to allow passage of the balance point.

The hydraulic or pneumatic jack 23 allows the locking system of the chassis 10 of the assembly on the pressure frame 34 to be activated without the operator's involvement with total non-reversibility and reliable reliability of the assembly on the pressure frame. The level of can be remote controlled in a very high way.

On the other hand, various arrangements are possible. In hot straightening, for example, the jack can be mounted so as to expose as little as possible to the heat released by the product.

The chassis 10 'of the subassembly 1' disposed at a constant level on the beam 34 can simply contact in a straightening position. However, similar fastening means, likewise remotely controlled, may be used if desired.

As mentioned above, in the known device of the type disclosed in document DE-A-2 131 739, each of the upper cartridge and the lower cartridge forming the straightening assembly is connected to a pressure frame or lower cartridge for the upper cartridge to be disposed in the dismantling carriage. It can be removed from the frame of the machine by sliding the rail embodied in the beam. In the device according to the invention also a dismantling carriage is used but only when removing the upper cartridge. In practice, the lower cartridge is placed on a take-out platform arranged on the side of the frame and then removed and replaced in this position by the dismantling carriage of the upper cartridge.

In FIG. 8, which is a perspective view of the entire installation according to the invention, the withdrawal platform 4 is the bottom of the pit 40 ′ embodied in the floor 40 of the workshop on the side of the frame 3 of the straightening machine on the operator side. Form wealth.

As schematically shown in FIGS. 10 to 13, the drawing platform 4 is arranged in an extension of the guide rail 41 ′ embodied on the beam 32 of the machine and the chassis 10 of the lower assembly 1 ′. A support roller 13 to ') is provided with a sliding groove 41 (not shown in detail) that slides.

Following the possible unlocking, the movement of the assembly 1 'is controlled by a jack 16 arranged below the level of the withdrawal platform 4, the spindle of the jack being of the assembly 1' at the level of the platform. Means for detachably fixing to the hook mechanism 15 arranged on the front surface are provided.

In FIG. 8, the lower assembly 1 ′ is shown as being in a disengaged position on the withdrawal platform 4, wherein the upper assembly 1 is still pressure inside the frame 3 of the machine, not shown in the drawing. It is below frame 34.

As described below, before removing the lower assembly 1 ', the coupling mechanism 14' of the lower extension bar 36 'is locked at the level H1 of the journal 13'.

According to an essential feature of the invention, the lower assembly 1 ′ is separated from the frame 3 and then removed by a traveling crane to be placed on the service floor 40 of the workshop and the upper assembly. Can be replaced with a dismantling carriage 5 for (1). This carriage 5 is provided with a hook mechanism 51, which is similar to the hook mechanism 15 of the lower assembly 1 ′ and which can be fixed to the end of the spindle of the jack 16. On the other hand, the carriage 5 is provided with the roller 52 arrange | positioned mainly in the runway 41 in this position. Thus, the jack 14 can return the dismantling carriage 5 to the inside of the frame 3 of the machine in the manner shown schematically in FIG. 11 to accommodate the upper assembly 1.

9 shows schematically different steps A to L of a method according to the invention for dismantling two straightening assemblies.

In step A, the two assemblies 1, 1 ′ are placed in a service position inside the frame 3 of the machine on the side where the withdrawal platform 4 is arranged as described above. The dismantling carriage 5 is arranged in the vicinity of the platform 4 at the disengaged position of the workshop floor 40.

Since the upper assembly 1 is raised in the open position, the lower assembly 1 ′ can be pulled by the jack 16 on the withdrawal platform 4 to the position shown in step B of FIG. 9 and in FIG. 10.

Subsequently, the lower assembly 1 ′ is removed from the platform 4 to be placed on the bottom 40 at the side of the pit 40 ′. For this reason, when not in use, the lifting table 42, which is disposed on the cradle 43, may be used. Thereafter, the maintenance carriage 5 is received by the mobile crane instead of the lower assembly 1 'at the position shown in step C of FIG. 9 and placed in the sliding groove 41.

As described above, the dismantling carriage 5 is provided with a removable hook mechanism 51 that engages the spindle of the jack 16, so that the jack corresponds to step D of FIG. 9 and is in the position schematically shown in FIG. It may be operated under the upper assembly 1 to return the dismantling carriage 5 to the inside of the frame 3 of the machine.

Thereafter, the pressure frame 34 is lowered to load the upper assembly 1 on the dismantling carriage 5, and the hook mechanism 2 can then be opened to release the frame 34 so that the frame is raised again. .

The upper assembly 1 is then placed on the dismantling carriage 5 and removed from the frame to move the upper cartridge on the take-out platform 4 to a position corresponding to step E of FIG. 9. Pulled back by the jack 16.

As shown in FIG. 8, the fixture likewise has an impression table 42 for maintenance, which is arranged on the cradle 43 when not in use, and likewise a new upper assembly 1a can be placed on the cradle. have. This pulling table can be steered by the mobile crane to take up the upper assembly 1 on the take-off platform 4 to the position shown in step F of FIG. 9.

In the next step G, the impression table 42 actuated by the mobile crane removes the worn upper assembly and places it on the used lower assembly 1 ′ disposed on the side of the platform 4 in the previous step D. The impression table 42 then receives a new upper assembly 1a prearranged in the cradle 43 corresponding to step H of FIG. 9 and new on the maintenance carriage 5 in the position shown in FIG. 12. Place the upper assembly.

The new assembly 1a is then moved by the maintenance carriage 5 in step I of FIG. 9 by sliding on the guide rail of the pressure frame 34 which is held at the same level after withdrawing the worn assembly 1. Can be returned to the inside of 3). The coupling mechanism 14 of the upper extension bar 36 is likewise retained at the same level H2 in the manner described below and engages the journal 13a of the roll of the new assembly 1a by sliding axially.

During this, the impression table 42 which has just been released places the worn upper assembly 1 on the cradle 43.

Thereafter, the locking mechanism 2 is closed to fix the pressure frame 34 and the new upper assembly 1a, and the entire group can be pulled back to the position shown in FIG. 13, and at the same time in step J of FIG. Release the maintenance carriage 5 returned by the jack 16 onto the withdrawal platform 4 as shown.

Advantageously, the retraction table 42 for repair is mounted to rotate on the cradle 43 about the journal 42a, so that it can pivot about a horizontal axis, and thus wear in the position schematically shown in step J. Can be formed to rotate the assembled assembly 1. Thus, the work roll of the upper assembly 1 is flipped up, facilitating possible disassembly for maintenance and replacement.

As shown in FIG. 8, the new subassembly 1 ′ is prearranged of the workshop floor 40 in the vicinity of the withdrawal platform 4.

The maintenance carriage 5 arranged on the platform 4 in step J can be removed by the mobile crane to be loaded to a standby position on the bottom 40, for example, to the side of the new subassembly 1 ′ a, and thereafter. The new lower assembly is removed by the mobile crane to be placed on the take-out platform 4 in the position shown in step K of FIG. 9, and the hook mechanism 15a is fixed to the end of the spindle of the jack 16.

On the other hand, as will be described later, the coupling mechanism 14 'of the lower extension bar 36' is disposed at the level H1 of the axis of the roll 11'a of the lower cartridge 1'a.

Thus, the new lower assembly 1'a can be introduced into the frame 3 by sliding on the rail 41 'of the beam 32 until it is adjacent in the working position, and the lower coupling mechanism 14' It slides in the axial direction and engages on the journal 13'a of the roll of assembly 1'a.

In the final step L, the machine has two new assemblies, each of which is an upper assembly 1a and a lower assembly 1'a, and straightening can be resumed. In doing so, maintenance work on worn assemblies 1a, 1'a that can be performed on the floor 40 of the workplace near the machine can be undertaken if the work is simple. Obviously, worn assemblies can be removed from the maintenance shop and replaced with new assemblies 1b, 1'b in the vicinity of the machine as needed.

As described above, at least a portion of the straightening rolls of the two assemblies must be driven to rotate by the upper extension bar 36 and the lower extension bar 36 ', and the ends of the extension bars are slid straight by sliding axially. It is connected to each roll by a removable coupling mechanism 14, 14 ′ which fits on the end journals 13, 13 ′ of the rolls 11, 11 ′.

As shown in schematic form in FIG. 10, during disassembly of the lower straightening assembly 1 ′, the axis of the roll 11 ′ is centered on the coupling mechanism 14 ′ of the lower extension bar 36 ′. Lie in a horizontal plane disposed at level H1.

This first level H1 corresponds to the height of the axis of the roll 11 ′ with respect to the guide rail 41 ′ of the beam 32.

The coupling mechanism 14 'is in the position shown in FIG. 13 so that the mating portions of each of the coupling mechanism 14' and the journal 13 'of the corresponding roll can be fitted together without risk of damage. During reassembly of the subassembly 1 ′ inside the frame 3, it should be placed at the same level H1 with respect to the beam 32.

Likewise, during disassembly of the upper assembly 1, the upper assembly is placed in the disassembly carriage 5 in the position shown in FIG. 12, and the axis of the upper roll 11 is disassembled in which the upper assembly replaces the lower assembly 1 ′. When placed on the carriage 5 it is arranged on a horizontal plane located at the second level H2 corresponding to the height of the axis of the upper roll 11 with respect to the beam 32. Thus, the coupling mechanism 14 of the upper extension bar 36 is centered in this plane upon disassembly and when the new assembly 1a is introduced into the machine by the maintenance carriage 5, the mating portions are released. It must be maintained at the same level (H2) so that it can fit together without risk of damage.

Thus, the machine is adapted to connect the coupling end 14 of the upper extension bar 36 at a second level H2 dismantling the upper assembly 1 and the coupling end 14 ′ of the lower extension bar to the lower assembly 1. ') Is fitted by means for locking at the first level H1 which dismantles.

Such locking means comprise three clamping plates shown in perspective in FIG. 14, the operation of which is shown by FIGS. 15 to 18.

14 is mounted on the columns 31'a, 31'b of the frame 3 of the machine on the drive side, extends horizontally between the two columns 31'a, 31'b and has a lower crossbar 60 '. Shows a perspective view of an entire group of locking means comprising a lower plate 6 ′ mounted at the top), an upper plate 6 mounted at the upper crossbar 60, and an intermediate plate 7 embodied at the two pivot parts. .

In FIG. 15 showing the machine in the straightening position, three plates are opened so that the coupling mechanisms 14, 14 ′ are coupled to the journals 13, 13 ′ of the rolls of the two assemblies.

In the example shown in the figures, the lower assembly 1 ′ comprises six lower rolls 11 ′ each driven to rotate by an extension bar 36 ′, and the upper assembly 1 has an extension bar 36. It includes five rolls 11 driven by.

As shown in schematic form in FIG. 4, each coupling mechanism 14, 14 ′ has two separate panels in the shape of corresponding plates, which form a sleeve with an inner groove and are embodied on the lower plate 6 ′. 61 ').

This plate 6 'is supported by a crossbar 60' disposed in two mechanical jacks 62 each mounted in a support 63 fixed to the beam 32 of the machine in the example shown. The two jacks 62 are simultaneously operated by a worm system 64 driven by a motor. Thus, the crossbar 60 is vertically guided by the spindles of the two jacks 62 and raised to receive the six coupling sleeves 14 'of the lower extension bar 36' in the position shown in FIG. Can be.

The intermediate plate 7 is generally arranged at the level of the feeding plane P of the product between the two levels of the journals 13, 13 ′ to which the extension bars 36, 36 ′ engage. Thus, the intermediate plate 7 extends for the purpose of regulating engagement with a closed locking position extending across the axis of the roll between the coupling sleeves 14, 14 ′ of the two series of extension bars 36, 36 ′. The intermediate plate 7 should be able to move horizontally between the bars and laterally separated open positions to enable vertical movement of the top roll.

Thus, as shown in FIG. 14, it is advantageous for the intermediate plate 7 to comprise two parts 7a, 7b mounted on two pivots 70a, 70b, respectively, pivoting about a vertical layer, The level of the weekly plate can be changed and the opening and closing of the intermediate plate is controlled by means 8a, 8b.

As shown in Figures 14 and 19, each of the pivots 70a, 70b is supported by a support element 81 on which the base of two jacks extending in opposite directions is fixed, the two jacks being top plate The upper jack 82 with the articulated spindle on the end of the crossbar 60 supporting 6 and the spindle articulated on the end of the crossbar 60 'supporting the lower plate 6'. Having a lower jack 82 '.

The ends of the upper crossbar 60 are mounted so as to slide vertically on the runways 83a and 83b respectively embodied on the two columns 31'a and 31'b of the frame 3.

On the other hand, the support elements 81a and 81b are adapted to slide over a small height on the runway 84 embodied on the two columns 31'a and 31'b of the frame at the level of the feed plane P, respectively. It is mounted itself.

As shown in FIG. 19, to control the opening and closing of the intermediate plate 7, each support element 81 has one end articulated on the half-plate and pinion With a rectangular rack 85 that engages 86, the pinion is mounted to rotate on the support element 81 and can be driven by a crank in the manner shown in FIG. 19 or by an operator near the machine. It may be driven by a remotely controlled motor if it is desired never to position it.

In the straightening position shown in FIG. 15 and corresponding to step A of FIG. 9, all extension bars 36, 36 ′ and their coupling mechanisms 14, 14 ′ are two straightening assemblies 1, 1 ′. Is supported by a journal of its corresponding roll. The lower plate 6 'is in the low position and the upper plate 6 is in the high position. The two parts 7a, 7b of the intermediate plate 7 are opened in the manner shown in FIGS. 14 and 19.

For disassembly of the lower assembly, the lower plate 6 'is provided with a corresponding couple in the position shown in FIG. 16 corresponding to the first level H1 at which each pair of panels 61' locks the lower extension bar 36 '. Lifted by jack 62 to contact ring sleeve 14 '.

Since the two crossbars 60 ', 60 are connected at each end by a pair of opposing jacks 82, 82' when locked, the upper plate 6 and the intermediate plate are raised when the lower plate 6 'is raised. The two parts of (7) also rise correspondingly.

Thereafter, the rotation of the two half plates 7a and 7b is controlled, and the half plates are arranged in alignment for the purpose of reforming the intermediate plate 7 in the manner shown in FIG. Thus, the free ends of the half plates 7a and 7b have a mating profile to fit one of the free ends of the half plates to the inside of the other, thus providing a predetermined vertical strength to the reshaped transverse plate 7. Add.

As shown in FIG. 16, this transverse plate 7 comprises six pairs of panels 71 ′ on the bottom surface, respectively corresponding to the lower coupling sleeve 14 ′ of the six lower rolls 11 ′. And five pairs of panels 71 corresponding to the upper sleeve 14 on the upper surface.

Similarly, the upper plate 6 has five pairs of panels 61 respectively corresponding to the coupling sleeves 14 of the upper extension bar 36 on the lower surface.

The intermediate plate 7 thus formed is then lowered slightly by the lower jack 82 'and the spindle lies at the end of the lower crossbar 60' held by the mechanical jack 62. Thus, the lower sleeve 14 'is locked at the first level H1 in the position shown in FIG. This first level H1 is recorded by storing the position of the jack 62 at that time in the control system of the machine. The lower assembly 1 ′ can then be removed from the frame by the jack 16 in the manner shown in step B of FIGS. 10 and 9.

After replacing the lower assembly 1 ′ by the maintenance carriage 5, the maintenance carriage receives the upper assembly 1 introduced into the frame 3 of the machine and lowered by the pressure frame 34. The axis of the upper roll is then located at the second level H2 shown in FIG.

Since the first locking level H1 is recorded, the lower crossbar 60 'can be raised by a mechanical jack 62 disposed on the beam 32, while at the same time the lower plate 6' and the intermediate plate ( The lower coupling mechanism 14 'which is held clamped between 7) is likewise raised by the lower crossbar 60'. In fact, because the two pairs of jacks 82, 82 'are locked, the vertical movement of the lower crossbar 60' results in the upper crossbar 60 and the support element 81, which end slides on the runways 83a, 83b. The corresponding rise of the intermediate plate 7 running along the runway 84 is controlled.

Thus, the entire group formed by the lower crossbar 60 ', the coupling sleeve 14' and the middle plate 7 is the upper part where the upper panel 71 of the middle plate 7 is centered at the level H2. It is raised to the point of receiving the coupling sleeve 14 of the extension bar.

The jack 82 is then intermediate with the lower crossbar 60 'where the panel 61 forming the top plate 6 is shown in FIG. 18 and held by the jack 62' in a position corresponding to FIG. The lowering of the crossbar 60 is controlled to clamp the entire group of upper sleeves 14 arranged in the plate 7.

Since the end of the upper extension bar 36 is thus locked at the second level H2, the maintenance carriage 5 can be moved away, while the upper assembly 1 can also be moved away in the manner described above.

After replacing the worn assembly 1 with a new assembly 1a, the new assembly is moved into the frame 3 by the maintenance carriage 5, and the journal 13a of the roll 9 is level H2. Coupled to the coupling mechanism 14 maintained at.

After locking the fastening mechanism 2, the upper crossbar 60 is moved away by the jack 82 to release the upper coupling 14 and the new assembly 1a is raised by the pressure frame 34.

The mechanical jack 62 then controls the lowering of the intermediate plate 7 and the lower crossbar 60 'together with the entire group of lower sleeves 14', whereby they have previously been shown in the manner shown in FIG. The recorded first level H1 is returned.

In the same way, after lowering the new lower assembly 1 'to the platform 4, the platform 4 can be returned to the inside of the frame and the journal 13'a of the lower roll 9 is leveled. Engage in a coupling sleeve 14 'locked in H1.

Thus, the unlocking and disassembly of the worn assembly 1, 1 ′ without operator intervention and the reassembly of the new assembly 1 a, 1 ′ a with the journal engaged on the coupling mechanism locked at the level H 1, H 2. All the necessary work can be done.

Of course, the present invention is not limited to the details of the embodiments shown by way of example only, and can form variations of the subject matter of the invention using equivalent means while remaining within the same protection scope.

In particular, other types of coupling means, such as claws, which can be retained at some level, for example for assembly and disassembly of the cartridge, can be used. In addition, the pivot of the middle half plates 7a, 7b can also be controlled remotely without operator intervention.

Claims (17)

A method of dismantling the straightening assemblies 1, 1 'of a machine for straightening flat objects, The machine, Means for controlling the feeding of the product (M) along the longitudinal axis (O) in the feeding plane (P), A fixed support frame 3 having two pillars 31, 31 ′ spaced on each side of the longitudinal axis, Two straightening assemblies, a lower assembly 1 'disposed on a fixed beam 32 and an upper assembly 1 disposed on a pressure frame 34, each straightening assembly having a longitudinal feeding axis O. Two straightening assemblies, forming a cartridge comprising a plurality of separate spaced apart rolls 11, 11 ′ mounted to rotate on the chassis 10, 10 ′ about an axis perpendicular to); Means (2) for detachably securing the chassis (10) of the upper assembly (1) on the pressure frame (34), Means 30 for vertically moving the pressure frame 34 to adjust the engagement of the rolls of the two assemblies 1, 1 ′, Means for rotationally driving a roll disposed on one side of the frame 3 and connected to at least some of the rolls 11, 11 ′ by extension bars 36, 36 ′, the first end of the extension bar being rotated Driven, the second end of the extension bar has a removable coupling mechanism 14, 14 ′ with the ends 13, 13 ′ for driving the rolls 11, 11 ′, the extension bars 36, 36. ') Rotates the roll to be arranged at two levels, the lower level coupling with the roll 11' of the lower assembly 1 'and the upper level coupling with the roll 11 of the upper assembly 1'. Means to do, Each of the two straightening assemblies in the form of a cartridge by movement perpendicular to the feed axis O between the working position inside the frame 3 and the draw positions laterally spaced apart on the side of the frame 3 opposite the drive side. Means for dismantling A method of dismantling a straightening assembly, Locking the coupling ends 14 'of the entire group of lower extension bars 36' at a first level H1 dismantling the lower assembly 1 ', Withdrawing the lower assembly 1 'by sliding on the same level perpendicular to the feed axis O up to the take-out platform 4 disposed on one side of the frame 3 opposite the drive side; Returning the lower assembly 1 'to the maintenance position; Loading the dismantling carriage 5 on the take-out platform 4, Introducing the dismantling carriage 5 into the frame 3 by sliding on the same level perpendicular to the feeding axis O, Lowering the pressure frame 34 to load the upper assembly 1 on the dismantling carriage 5; Locking the coupling end 14 of the upper extension bar 36 at a second level H2 dismantling the upper assembly 1, Opening the removable means 2 to secure the upper assembly 1 on the pressure frame 34, Raising the pressure frame 34, Withdrawing the upper assembly 1 by sliding perpendicular to the feed axis O from the dismantling carriage 5 on the same level to the withdrawal platform 4; Characterized in that the two straightening assemblies 1, 1 ′ are individually removed from the frame, including positioning the upper assembly 1 in the maintenance position. Method of dismantling straightening assembly. The method of claim 1, After repair or replacement, Loading a new upper cartridge 1a into a dismantling carriage 5 arranged on the take-out platform 4, The dismantling carriage 5 at the same level with the driving end 13a of the upper roll 11 engaging in the coupling mechanism 14 of the upper extension bar 36 locked at the second level H2 for dismantling. Introducing the upper cartridge into the frame 3 by a transverse slide from Closing the removable means 2 to secure the upper cartridge 1a on the pressure frame 34, Unlocking the upper extension bar; Raising the pressure frame 34 together with the upper cartridge 1a and the upper extension bar 36; Drawing the dismantling carriage 5 by sliding it to the withdrawal platform 4; Removing the dismantling carriage 5 from the withdrawal platform 4, Loading a new lower cartridge 1'a onto the take-out platform 4, The same level with the driving end 13'a of the lower roll 11'a engaged in the coupling mechanism 14 'of the lower extension bar 36' locked at the first level H1 for dismantling. Characterized in that the straightening assembly is positioned in the frame 3 in such a way as to introduce the lower cartridge 1'a into the frame 3 by means of a transversal slide at Method of dismantling straightening assembly. The method according to claim 1 or 2, The beam 32 and the take-out platform 4 have aligned guide rails 41 ′, 41 orthogonal to the feed axis O to slide the lower assembly 1 ′ and the dismantling carriage 5 at the same level, respectively. Characterized in that Method of dismantling straightening assembly. The method according to claim 1 or 2, The locking of the extension bars consisting of an upper extension bar 36 and a lower extension bar 36 'for dismantling the straightening assembly 1, 1' Raising the lower plate 6 'to a point of contact with the entire group of lower extension bars 36' to receive the lower extension bars; Positioning the intermediate plate 7 over the lower extension bar 36 ', Coupling end 14 'of lower extension bar 36' between lower plate 6 'and intermediate plate 7 for locking the lower extension bar 36' at a first level H1 for dismantling. Clamping the Lowering the upper assembly 1 onto the dismantling carriage 5; Contacting the intermediate plate 7 with the coupling end 14 of the upper extension bar 36, Lowering the upper plate 6 to the point of contact with the coupling end 14 of the upper extension bar 36; Clamping the upper coupling end 14 between the intermediate plate 7 and the upper plate 6 to lock the upper extension bar 36 at the second level H2 for dismantling. Characterized in that Method of dismantling straightening assembly. 5. The method of claim 4, The bottom plate 6 'is brought into contact with the end 14' of the lower extension bar 36 'of the lower assembly 1' and then at this first level H at the first level H1 for dismantling. The position of the corresponding lower plate 6 ′ is recorded and the entire group of lower plates 6 ′ together with the end 14 ′ of the intermediate plate 7 and lower extension bar 36 ′ dismantle the carriage 5. Is raised from the second level H2 for disassembly of the upper assembly 1 disposed at the end point 14 of the upper extension bar 36 to the point of contact of the intermediate plate 7 and the second level for disassembly ( After reassembly of the upper cartridge 1a by engagement of the upper coupling mechanism 14 in H2), the lower plate 6 'together with the end 14' of the intermediate plate 7 and the lower extension bar 36 '. The entire group of) is the lower plate 6 'to the first level H1 for dismantling previously recorded to reassemble the lower cartridge 1'a on the beam by engagement of the lower coupling end 14'. Characterized by being returned by moving Method of dismantling straightening assembly. A device for dismantling the straightening assembly 1, 1 ′ of the machine for straightening flat objects, The machine for straightening the flat object Means for controlling the feeding of the product (M) in the longitudinal axis (O) direction along the feeding plane (P), A fixed support frame 3 having two pillars 31, 31 ′ spaced on each side of the longitudinal axis O, Two straightening assemblies, a lower assembly 1 'disposed on a fixed beam and an upper assembly 1 disposed on a pressure frame 34, each straightening assembly perpendicular to the longitudinal feeding axis O. Two straightening assemblies, forming a cartridge comprising a plurality of separate spaced rolls 11, 11 ′ arranged to rotate on the chassis 10, 10 ′ about one axis; Means (2 ', 2) for detachably securing the chassis (10) of the upper assembly (1) on the pressure frame (34); Means 30 for vertically moving the pressure frame 34 to adjust the engagement of the rolls of the two assemblies 1, 1 ′, Means for rotationally driving the rolls 11, 11 'disposed on one side of the frame 3 and connected to at least some of the rolls 11, 11' by extension bars 36, 36 '. The first end is driven to rotate, the second end of the extension bar has a removable coupling mechanism 14, 14 ′ with an end for driving the rolls 11, 11 ′, and the extension bar 36, 36 'is provided at two levels, the lower level H1 coupling with the roll 11' of the lower assembly 1 'and the upper level H2 coupling with the roll 11 of the upper assembly 1'. Means for rotationally driving the rolls, Means for dismantling the straightening assembly by moving each cartridge perpendicular to the feed axis O between the draw position laterally spaced apart from the side of the frame 3 opposite the drive side and the working position inside the frame 3. 16, A drawing platform (4) embodied with a first sliding groove (41) arranged on the frame (3) side opposite to the driving side and aligned with a second sliding groove (41 ') embodied in the beam (32), said The first sliding groove 41 and the second sliding groove 41 'include a drawing platform 4, orthogonal to the feeding axis O, In the device for dismantling the straightening assembly (1, 1 '), The straightening assembly dismantling device After sliding on the first sliding groove 41, which is suitable to be installed on the take-out platform 4 instead of the lower assembly 1 ′ to engage on the beam 32 inside the frame 3 and aligned at the same level. A dismantling carriage 5, which can be moved by sliding on a second sliding groove 41 ′ aligned at the same level, receiving the upper assembly 1 after opening of the removable means, thereby closing the upper assembly 1 to the pressure frame 34. With dismantling carriage 5 to fix it, Means 6 ', 7 for locking the coupling end 14' of the lower extension bar 36 'at a first level H1 for dismantling the lower assembly 1', And means (7, 6) for locking the coupling end (14) of the upper extension bar (36) at a second level (H2) for dismantling the upper assembly (1) disposed on the dismantling carriage (5). doing Straightening assembly dismantling device. The method of claim 6, The means for locking the coupling ends of the lower extension bar and the upper extension bar comprises two plates, the lower plate 6 'and the upper plate 6, and the intermediate plate 7, The two plates are mounted to extend across the axis of the rolls 11, 11 ′ above and below the feed plane of the product M and to slide vertically on the drive side of the support frame 3, The intermediate plate is generally disposed at the level of the feeding plane P of the product, the intermediate plate is movable between a locking position extending laterally across the axis of the roll and a laterally separated position, Means for vertically moving the lower plate 6 'and the middle plate 7 to receive and clamp the coupling end 14' of the lower extension bar between the lower plate 6 'and the middle plate 7 62, 62 '), Further comprising means 82 for vertically moving the upper plate 6 to receive and clamp the coupling end 14 of the upper extension bar 36 between the upper plate 6 and the middle plate 7. Characterized by Straightening assembly dismantling device. The method of claim 7, wherein The means for vertically moving the lower plate 6 ′ is characterized in that the jack 62 is arranged on the beam 32. Straightening assembly dismantling device. The method of claim 8, The jack 62 for vertically moving the lower plate 6 'is characterized in that it is a mechanical jack. Straightening assembly dismantling device. The method according to any one of claims 7 to 9, The intermediate plate 7 comprises two parts 7a, 7b mounted to pivot in two support elements 81 arranged on each side of the feeding axis O of the product M, the two Each of the portions 7a, 7b is one of the other two so that the two portions 7a, 7b of the intermediate plate 7 are arranged so as to cross the axis of the roll to form one plate 7. And means 85 for controlling the pivot of the two portions 7a, 7b, respectively, between the locked position and the disengaged position arranged at the top of Straightening assembly dismantling device. The method according to any one of claims 7 to 9, The means for vertically moving the upper plate 6 and the intermediate plate 7 comprises two pairs of hydraulic jacks 82, 82 ′ each disposed on each side of the feeding axis O of the product M, and The two pairs of hydraulic jacks comprise a lower jack 82 'with a main body fixed to the support element 81 of the intermediate plate 7 and a spindle disposed at one end of the lower plate 6', and an intermediate plate 7 A lower jack, each comprising two jacks extending in opposite directions consisting of a main body fixed on a support element 81 of the head) and an upper jack 82 having a spindle disposed at one end of the upper plate 6; The 82 'is used to clamp the end 14' of the lower extension bar 36 'between the middle plate 7 and the lower plate 6', and the upper jack 82 is used to clamp the middle plate 7 and the lower plate. Characterized in that it is used to clamp the upper plate 6 onto the end 14 of the upper extension bar 36 in a state arranged in the plate 6 '. Straightening assembly dismantling device. The method of claim 11, The upper plate 6 is characterized in that it is mounted to slide vertically on two runways 83a and 83b respectively implemented on the driving side of the frame 3 on each side of the feeding axis O. Straightening assembly dismantling device. 12. The two support elements 81 of the intermediate plate 7 are mounted so as to slide on two runways 84, each embodied on the driving side of the frame 3 on each side of the feeding axis O. Characterized in that Straightening assembly dismantling device. The method according to any one of claims 6 to 9, Characterized in that it comprises a single means (16) for moving across the feeding axis, which can be detachably fixed to the lower assembly (1 ') or dismantling carriage (5). Straightening assembly dismantling device. The method according to any one of claims 6 to 9, The means for detachably securing the upper assembly 1 on the pressure frame 34 is Separate positions for positioning the upper assembly 1 below the pressure frame 34 about the horizontal axis of the pivot portion 211 on the pressure frame 34, respectively, and each hook 21 is provided with Two or more hooks 21 mounted to rotate between the locking positions disposed below the hook block 10 of the chassis 10, Means (22) for controlling the pivot of the hook (21) from the disconnected position to the locked position, The pivot means 22 is slightly at the end of the pivot 21 and the horizontal axis of the pivot portion 211 and the end 210 of the hook 21 for the purpose of clamping the chassis 10 against the lower surface of the pressure frame 34. Causing an increase in Straightening assembly dismantling device. The method of claim 15, Each hook 21 pivots about an upper shaft 211 mounted to slide vertically on the pressure frame 34, The means 22 for controlling the pivot of each hook 21 comprises a first element disposed in the pressure frame 34 and a second element disposed at one end of the angled lever 223, The angular lever is mounted to rotate about the fixed lower shaft 224 on the pressure frame 34 at the other end, and the hook 21 is engaged with the lifting of the upper pivot shaft 211 by the rotation of the angular lever. Articulated about a central axis 213 on the hook 21 so as to pivot up to it, and in the locking position after passing through the end 210 of the hook 21 below the hook block 101, the hook block 101 Characterized in that the upper axis 211, the central axis 213 and the lower axis 224 is aligned to have a reinforcing effect along the line passing through the through Straightening assembly dismantling device. The method of claim 15, The end 210 of the claw 21 is mounted with support elements 214 mounted to slide along an axis oriented towards the upper axis 211 of the articulation portion of the claw 21, and an enlarged head and hook of the support element 214. To form an elastic contact mechanism comprising a compression spring 215 inserted between the ends 210 of 21. Straightening assembly dismantling device.

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