EP1524220A2 - Device for application in paperboard or other material processing machines for preventing main shafts from bending - Google Patents
Device for application in paperboard or other material processing machines for preventing main shafts from bending Download PDFInfo
- Publication number
- EP1524220A2 EP1524220A2 EP04024378A EP04024378A EP1524220A2 EP 1524220 A2 EP1524220 A2 EP 1524220A2 EP 04024378 A EP04024378 A EP 04024378A EP 04024378 A EP04024378 A EP 04024378A EP 1524220 A2 EP1524220 A2 EP 1524220A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- counter
- supporting
- discs
- shafts
- slitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011087 paperboard Substances 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 title claims abstract description 26
- 238000005452 bending Methods 0.000 title abstract description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/13—Details of longitudinal profile
- B65H2404/137—Means for varying longitudinal profiles
- B65H2404/1372—Means for varying longitudinal profiles anti-deflection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/176—Cardboard
- B65H2701/1762—Corrugated
Definitions
- the present invention relates to a device designed for application to operating machines for processing paperboard or other materials, in sheet or strip form, which is adapted to prevent main operating shafts from bending, such as, respectively, counter-precreasing, counter-slitting and counter-creasing shafts.
- the latter is more sensitive at the center of the paperboard strip and is caused by the weight of the operating shafts supporting related operating disc elements.
- the corrugated paperboard material will have, at a center thereof, different depth precreased and creased portions, which will negatively affect following folding operations for forming, for example, boxes, and this particularly in automatic systems for packaging products into paperboard boxes.
- the aim of the present invention is that to overcome the above mentioned drawbacks, by providing a device specifically designed for preventing main operating shafts from bending which is very simple construction wise and can be quickly applied to existing paperboard material processing machines.
- figure 1 shows said operating machine 100 for processing a corrugated paperboard material 81, which machine comprises slitting knives 78, which are rotatively driven by motor driven shafts.
- conveying belts 77 driven by a driving shaft 83 are provided.
- the slitting knives 78 operate in cooperation with counter-slitting knives 79, thereby suitably slitting and trimming a corrugated paperboard material sheet 81.
- Figure 1 shows furthermore a supporting shaft 11, supporting a plurality of counter-slitting disc elements 79 including a plurality of related grooves.
- the above operating shafts tend to bend because of the stress applied thereto by the belts 77 operating in cooperation with the flat portion of the counter-slitting elements 79, in the presence of a corrugated paperboard sheet 81 which is entrained for processing it.
- the operating machine shown in figure 1 comprises a geared motor unit 85, driving a shaft 86 which, through related gears 87 and toothed sectors 96, rotatively drives eccentric bushes 90 arranged at end portions thereof, provided for adjusting the thickness or spacing between the counter-slitting elements 79 supported by the shaft 11, and the top belts 77.
- the operating machine comprises furthermore a further operating shaft, provided for causing the supporting elements 82 supporting the slitting discs 78 and related pulleys and belts 77 to axially slide in a horizontal direction.
- Figure 1 shows moreover a supporting bar 3, to which a linear guide 23 is applied, thereon is slidably supported a shoe or sliding block 24 in turn supporting an oleodynamic cylinder 6, on the top of which a cradle 16 is applied.
- the top shaft 83 rotatively drives the belts 77 and related pulleys, which are supported by the supporting elements or arms 82 through pivots 84, thereabout said slitting disc elements 78 are rotatively driven.
- Figure 2 shows a side view of the shafts supporting the slitting discd 78, counter-slitting discs 79, eccentric bushes 90, toothed or gear sectors 96, gears 87, precreasing assembly 92, counter-precreasing assembly 94, creasing assembly 93 and counter-creasing assembly 95.
- FIG. 2 schematically shows moreover an operating machine including pairs of opposite shafts 11, 11', 12, 12', 13, 13', 14 and 14', to which the device to be hereinafter disclosed can be applied.
- Figures 1 and 2 show, in a schematic manner, an operating machine 100 for processing corrugated paperboard material, to which machine the subject device will be applied.
- the slitting disc elements 78 operate in cooperation with counter-slitting discs 79, thereby properly cutting and trimming a corrugated paperboard sheet 81.
- Figure 1 shows a supporting shaft 11 which supports the grooved counter-slitting knives.
- the shafts 11, 11', 12, 12', 13, 13', 14 and 14' will tend to bend because of the pressure provided by the slitting discs 78 operating against the counter-slitting discs 79, in the presence of a corrugated paperboard sheet 81 being processed.
- Figure 3 shows a supporting bar 1, designed for supporting the oleodynamic cylinders 6, on the top of which are applied the cradles 16.
- shoes or sliding blocks 24 sliding on linear guides 23 applied to the supporting cross-members 2 and 3 are connected.
- Figure 3 and the following figures show the device according to the invention, designed for application to machines for processing corrugated paperboard sheets 21 and for preventing the main shafts 11, 11', 12, 12', 13, 13', 14 and 14' from being bent, which device comprises a supporting bar 1, for the device supporting the shafts 11, 12, 13 and 14, which supporting bar is arranged in a longitudinal direction with respect to the corrugated paperboard material 81 feeding direction.
- Said supporting bar 1 is in turn supported by two cross-elements shown in figure 3 and generally indicated in this figure by the reference numbers 2 and 3.
- the side cross-members 2 and 3 are applied, in turn, at their end portions, to the main shoulders of the machine and are supported, at a central part thereof, by uprights 4 bearing on the ground.
- the supporting bar 1 houses and supports, in turn, a plurality of hydraulic jacks 6, coupled to an oleodynamic pump 8 through coupling tubes 7 for supplying a hydraulic operating fluid.
- the pump 8 is coupled, through the coupling tubes 7, to a solenoid valve assembly 10, the solenoid valves of which are controlled by a pressure switch 9, designed for adjusting the fluid pressure which will set the pushing force of the operating jacks 6.
- the oleodynamic pump 8, pressure switch 9 and solenoid valves 10 supply, with a constant fluid pressure, the jacks 6 each of which will urge related supporting members of each main shaft 11, 12, 13 and 14.
- each hydraulic jack 6 support a bottom lug element 15, preferably of curved configuration, rigid with a cradle 16 which can follow a vertical movement, thereby being suitably raised and lowered.
- Each said cradle 16 is laterally guided by a pair of guiding elements 17 and side restraining plates 75.
- the guiding elements 17, plates 75 and supporting bar 81 are bolted or coupled by any other suitable coupling means to one another, to provide a monolithic bearing construction, adapted to resist against high stresses as applied thereto by the main shafts 11, 12, 13 and 14, during the processing steps.
- FIGS 3, 4 and 5 show the driving shafts 19 for driving the mentioned eccentric bushes, which are designed for adjusting the distance between the shafts supporting the mentioned counter-precreasing, counter-slitting, counter-creasing, precreasing, creasing discs as well as the top driving belts 77 arranged in an adjoining relationship with the slitting blades, depending on the thickness of the paperboard material to be processed.
- Each cradle 16 supports, in turn, a bearing 20 which is held in a set position by side pairs of holding sectors 18.
- Each bearing 20 supports a shaft 11, 12, 13 and 14, through the interposition of a bushing 22, providing an anti-seizing function, during the location operations.
- the mentioned bushing 22 is held in a set position therefor by resilient ring elements 21.
- cross members 2 and 3 are preferably provided with linear guides 23 and shoes or sliding blocks 24.
- the linear guides 23 support the sliding blocks 24 which in turn support the supporting bar 1, to allow the overall system to be axially driven, in order not to limit the locating flexibility and operating flexibility of the operating machine.
- the axial displacement of the subject device can be carried out by mechanical driving elements in turn driven by electric motors or oleodynamic pistons or manual adjustable systems.
- main shafts 12 and 14 can alternatively support the precreasing and creasing disc elements, in particular the bottom disc elements, cooperating with top precreasing and counter-creasing disc elements.
- the adjustment of the distance of the counter-precreasing, counter-creasing and counter-slitting bottom discs, with respect to the top precreasing, creasing and driving belts, which operate in cooperation with the counter-slitting discs, must be performed depending on the variation of the paperboard material thickness.
- the oleodynamic pump 8 will reset, the solenoid valves 10 being opened, the pushing of the pistons of the jacks 6, by pressurizing the hydraulic circuit 7, to achieve a preset value on a pressure switch 9.
- each piston of the hydraulic jacks 6 is controlled by a respective solenoid valve 10, which will be closed as the set and desired value is achieved.
- Figure 4 shows, on an enlarged scale, the sliding block assembly 30 supporting the supporting bar 1.
- Figure 5 shows an enlarged detail, illustrating the bearing surface 5 of the supporting bar 1, the supporting bar 1 for the device for supporting the shafts 11, 12, 13 and 14, the tubes 7 for supplying the hydraulic jacks 6, the shafts 19 for driving the eccentric bushings supporting at their end portions the main shafts 11, 12, 13 and 14, the several hydraulic jacks 6, the bearing surface 5 for bearing the supporting bar 1, the guide elements 17, a linear guide 23 bearing the ball recirculating shoe 24 supporting the bar 1 bearing surface 5 for the shaft supporting device (supporting the shafts 11, 12, 13 and 14).
- Figure 6 shows, on an enlarged scale, a detail of the operating machine and, more specifically, the linear guide 23 bearing shoe 24, the supporting bar 1 for the shafts 11, 12, 13 and 14 supporting device and the supporting bar 1 bearing surface.
- inventive device to be applied to corrugated paperboard material processing machines, or other materials in sheet or strip forms, is perfectly suitable to prevent the main shafts of said machines from being bent.
Abstract
Description
- The present invention relates to a device designed for application to operating machines for processing paperboard or other materials, in sheet or strip form, which is adapted to prevent main operating shafts from bending, such as, respectively, counter-precreasing, counter-slitting and counter-creasing shafts.
- As is known, the above mentioned main operating shafts, mainly in machines designed for processing corrugated paperboard of substantial width, are subjected to a natural bending.
- The latter is more sensitive at the center of the paperboard strip and is caused by the weight of the operating shafts supporting related operating disc elements.
- This drawback is further aggravated during the paperboard material processing, because of the stresses exerted at a lot of different points of the operating shafts by the paperboard material being handled or processed.
- More specifically, such a processing resistance is applied by the paperboard material against the counter-slitting, counter-precreasing and counter-creasing disc elements which are supported by the mentioned main operating shafts.
- Prior paperboard material handling or processing machines, and in particular available machines for processing corrugated paperboard, which are specifically designed for handling paperboard strips of a comparatively large width, are affected by great operating drawbacks, in consequence of the above mentioned flexure strains of the main operating shafts.
- The above drawbacks so negatively affect the mentioned precreasing, slitting and creasing operations that the corrugated paperboard being processed will have, at the end of the processing procedure, a lot of portions thereof with different depth values.
- In particular, the corrugated paperboard material will have, at a center thereof, different depth precreased and creased portions, which will negatively affect following folding operations for forming, for example, boxes, and this particularly in automatic systems for packaging products into paperboard boxes.
- The above mentioned drawback can be partially compensated for by using main operating shafts of greater diameter and thickness, which, however, will have a larger weight, in turn contributing to the above mentioned bending problem.
- Moreover, greater diameter shafts would involve an increase of the diameter of the processing discs, with a consequent increase of the distance of the shafts, and, accordingly, of the minimum length of the sheet to be handled.
- Accordingly, the aim of the present invention is that to overcome the above mentioned drawbacks, by providing a device specifically designed for preventing main operating shafts from bending which is very simple construction wise and can be quickly applied to existing paperboard material processing machines.
- The above mentioned aim, as well as yet other objects, which will become more apparent hereinafter, are achieved by a device according to
claim 1. - Further characteristics of the inventive device being defined in the dependent claims.
- The above mentioned and other features of the device according to the present invention will become more apparent hereinafter from the following detailed disclosure with reference to the figures of the accompanying drawings, where:
- Figure 1 is a schematic overall view of the machine according to the invention;
- Figure 2 is a side view of the machine shown in figure 1;
- Figure 3 is a further side view illustrating the device designed for preventing main operating shafts from bending;
- Figure 4 is an elevation cross-sectional view illustrating a detail of the subject device;
- Figure 5 shows a detail of a supporting bar of the shaft supporting device, with a related linear guide for supporting a sliding block or shoe assembly, and
- Figure 6 is a cross-sectioned top plan view of a detail of the sliding block as applied to the device of figure 3.
-
- With reference to figure 1, is herein shown, in a schematic manner, an operating machine 100 for processing corrugated paperboard, to which the device according to the present invention must be applied.
- More specifically, figure 1 shows said operating machine 100 for processing a
corrugated paperboard material 81, which machine comprisesslitting knives 78, which are rotatively driven by motor driven shafts. - Moreover,
conveying belts 77 driven by adriving shaft 83 are provided. - The
slitting knives 78 operate in cooperation withcounter-slitting knives 79, thereby suitably slitting and trimming a corrugatedpaperboard material sheet 81. - Figure 1 shows furthermore a supporting
shaft 11, supporting a plurality ofcounter-slitting disc elements 79 including a plurality of related grooves. - As stated, the above operating shafts tend to bend because of the stress applied thereto by the
belts 77 operating in cooperation with the flat portion of thecounter-slitting elements 79, in the presence of acorrugated paperboard sheet 81 which is entrained for processing it. - The operating machine shown in figure 1 comprises a geared
motor unit 85, driving ashaft 86 which, throughrelated gears 87 andtoothed sectors 96, rotatively driveseccentric bushes 90 arranged at end portions thereof, provided for adjusting the thickness or spacing between thecounter-slitting elements 79 supported by theshaft 11, and thetop belts 77. - On the top thereof, the operating machine comprises furthermore a further operating shaft, provided for causing the supporting
elements 82 supporting theslitting discs 78 and related pulleys andbelts 77 to axially slide in a horizontal direction. - Figure 1 shows moreover a supporting
bar 3, to which alinear guide 23 is applied, thereon is slidably supported a shoe or slidingblock 24 in turn supporting anoleodynamic cylinder 6, on the top of which acradle 16 is applied. - The
top shaft 83 rotatively drives thebelts 77 and related pulleys, which are supported by the supporting elements orarms 82 throughpivots 84, thereabout saidslitting disc elements 78 are rotatively driven. - Figure 2 shows a side view of the shafts supporting the slitting
discd 78,counter-slitting discs 79,eccentric bushes 90, toothed orgear sectors 96,gears 87, precreasingassembly 92,counter-precreasing assembly 94,creasing assembly 93 and counter-creasing assembly 95. - Figure 2 schematically shows moreover an operating machine including pairs of
opposite shafts - Figures 1 and 2 show, in a schematic manner, an operating machine 100 for processing corrugated paperboard material, to which machine the subject device will be applied.
- More specifically, the
slitting disc elements 78 operate in cooperation withcounter-slitting discs 79, thereby properly cutting and trimming acorrugated paperboard sheet 81. - Figure 1 shows a supporting
shaft 11 which supports the grooved counter-slitting knives. - In particular, the
shafts slitting discs 78 operating against thecounter-slitting discs 79, in the presence of acorrugated paperboard sheet 81 being processed. - Figure 3 shows a supporting
bar 1, designed for supporting theoleodynamic cylinders 6, on the top of which are applied thecradles 16. - To said supporting
bar 1, shoes or slidingblocks 24 sliding onlinear guides 23 applied to the supportingcross-members - Figure 3 and the following figures show the device according to the invention, designed for application to machines for processing
corrugated paperboard sheets 21 and for preventing themain shafts bar 1, for the device supporting theshafts corrugated paperboard material 81 feeding direction. - Said supporting
bar 1 is in turn supported by two cross-elements shown in figure 3 and generally indicated in this figure by thereference numbers - The
side cross-members uprights 4 bearing on the ground. - The supporting
bar 1 houses and supports, in turn, a plurality ofhydraulic jacks 6, coupled to anoleodynamic pump 8 throughcoupling tubes 7 for supplying a hydraulic operating fluid. - The
pump 8 is coupled, through thecoupling tubes 7, to asolenoid valve assembly 10, the solenoid valves of which are controlled by a pressure switch 9, designed for adjusting the fluid pressure which will set the pushing force of theoperating jacks 6. - The
oleodynamic pump 8, pressure switch 9 andsolenoid valves 10 supply, with a constant fluid pressure, thejacks 6 each of which will urge related supporting members of eachmain shaft - Thus, the flexure strain due to the weight of the mentioned shafts, supporting said operating discs will be compensated for, thereby preventing further strains due to the passage of the
paperboard material 81 during the precreasing, creasing and slitting operations thereon. - More specifically, each
hydraulic jack 6 support abottom lug element 15, preferably of curved configuration, rigid with acradle 16 which can follow a vertical movement, thereby being suitably raised and lowered. - Each said
cradle 16 is laterally guided by a pair of guidingelements 17 andside restraining plates 75. - The guiding
elements 17,plates 75 and supportingbar 81 are bolted or coupled by any other suitable coupling means to one another, to provide a monolithic bearing construction, adapted to resist against high stresses as applied thereto by themain shafts - With reference to figures 3, 4 and 5, they show the
driving shafts 19 for driving the mentioned eccentric bushes, which are designed for adjusting the distance between the shafts supporting the mentioned counter-precreasing, counter-slitting, counter-creasing, precreasing, creasing discs as well as thetop driving belts 77 arranged in an adjoining relationship with the slitting blades, depending on the thickness of the paperboard material to be processed. - Each
cradle 16 supports, in turn, abearing 20 which is held in a set position by side pairs ofholding sectors 18. - Each bearing 20, in turn, supports a
shaft - The mentioned
bushing 22 is held in a set position therefor byresilient ring elements 21. - As shown, the
cross members linear guides 23 and shoes or slidingblocks 24. - The
linear guides 23 support thesliding blocks 24 which in turn support the supportingbar 1, to allow the overall system to be axially driven, in order not to limit the locating flexibility and operating flexibility of the operating machine. - The axial displacement of the subject device can be carried out by mechanical driving elements in turn driven by electric motors or oleodynamic pistons or manual adjustable systems.
- In this connection it should be pointed out that the
main shafts - The above disclosed device operates as hereinbelow disclosed.
- More specifically, the adjustment of the distance of the counter-precreasing, counter-creasing and counter-slitting bottom discs, with respect to the top precreasing, creasing and driving belts, which operate in cooperation with the counter-slitting discs, must be performed depending on the variation of the paperboard material thickness.
- In order to perform the above mentioned adjustment, it is necessary to open the
solenoid valve 10, thereby clearing the hydraulic circuit, by clearing the pushing of the pistons of thejacks 6. - Then, upon having adjusted the novel required position of the
main shafts oleodynamic pump 8 will reset, thesolenoid valves 10 being opened, the pushing of the pistons of thejacks 6, by pressurizing thehydraulic circuit 7, to achieve a preset value on a pressure switch 9. - In this connection it should be pointed out that each piston of the
hydraulic jacks 6 is controlled by arespective solenoid valve 10, which will be closed as the set and desired value is achieved. - Possible pressure drops, during the processing procedure, will be immediately compensated for by a momentaneous automatic switching on of the
oleodynamic pump 8. - Figure 4 shows, on an enlarged scale, the sliding
block assembly 30 supporting the supportingbar 1. - Figure 5 shows an enlarged detail, illustrating the bearing
surface 5 of the supportingbar 1, the supportingbar 1 for the device for supporting theshafts tubes 7 for supplying thehydraulic jacks 6, theshafts 19 for driving the eccentric bushings supporting at their end portions themain shafts hydraulic jacks 6, the bearingsurface 5 for bearing the supportingbar 1, theguide elements 17, alinear guide 23 bearing theball recirculating shoe 24 supporting thebar 1bearing surface 5 for the shaft supporting device (supporting theshafts - Figure 6 shows, on an enlarged scale, a detail of the operating machine and, more specifically, the
linear guide 23bearing shoe 24, the supportingbar 1 for theshafts bar 1 bearing surface. - From the above disclosure it should be apparent that the inventive device, to be applied to corrugated paperboard material processing machines, or other materials in sheet or strip forms, is perfectly suitable to prevent the main shafts of said machines from being bent.
- The device according to the invention has been above disclosed and shown by way of a merely indicative but not limitative example of the features thereof.
- Thus, it should be apparent that the disclosed device is susceptible to several modifications and variations, all of which will come within the scope of the invention.
Claims (18)
- A device to be applied to operating machine for processing corrugated paperboard material, or other materials in sheet or strip form, and designed for preventing main shafts from being bent, characterized in that said device comprises a supporting bar (1) for supporting a shaft supporting assembly, which supporting bar is longitudinally arranged with respect to the paperboard material feeding direction and is supported by cross-members (2) and (3) in turn applied, at the end portions thereof, to main shoulders of said machine, and being supported, at a central part thereof, by uprights (4) and further supporting elements bearing on the floor.
- A device, according to claim 1, characterized in that said supporting bar (1) houses and supports, in turn, a plurality of hydraulic jacks (6), coupled through coupling tubes (7) for supplying a hydraulic fluid, to an oleodynamic pump (8).
- A device, according to the preceding claims, characterized in that said oleodynamic pump (8) is coupled, through said tubes (7), to a solenoid valve (10) assembly, the solenoid valves of which are controlled by a pressure switch (9) adapted to adjust the pressure of the fluid for operating said plurality of jacks (6).
- A device, according to one or more of the preceding claims, characterized in that said oleodynamic pump (8), pressure switch (9) and solenoid valve (10) assembly supply a fluid having a preset and constant pressure to said jacks (6), each of said jack operating supporting elements of each main shaft (11), (12), (13) and (14), thereby compensating for and eliminating flexure strains due to the weight of said shafts, which support said operating discs, and thereby preventing further strains caused by the paperboard material being processed during the precreasing, creasing and slitting and/or die-cutting operation steps.
- A device, according to one or more of the preceding claims, characterized in that each said hydraulic jack (6) supports a bottom lug (15), preferably of curved configuration, rigid with a cradle (16), designed for providing a vertical movement, thereby it can be suitably raised and lowered.
- A device, according to one or more of the preceding claims, characterized in that each said cradle (16) is laterally guided by a pair of guiding elements (17) and holding side plates (75).
- A device, according to one or more of the preceding claims, characterized in that said guiding elements (17) and said side plates (75) and supporting bar (1) are bolted or coupled in any other suitable manner to one another, thereby providing a monolithic type of bearing construction, adapted to resist against stresses transmitted thereto by said main shafts (11), (12), (13) and (14), during the paperboard material processing steps.
- A device, according to one or more of the preceding claims, characterized in that said shafts (19) drive eccentric bushes, adjusting the spacing of said disc supporting shafts, which respectively support counter-precreasing, counter-slitting, counter-creasing, creasing operating discs as well as associated operating belts arranged adjoining bottom slitting blades, depending on the thickness of the paperboard material to be processed.
- A device, according to one or more of the preceding claims, characterized in that said device comprise a plurality of cradles (16), each of which supports, in turn, a bearing (20) which is held in a set position by side pairs of holding sectors (18).
- A device, according to one or more of the preceding claims, characterized in that each said bearing (20) supports a said shaft (11), (12), (13) and (14) through a friction bush (22), adapted to provide an anti-seizing function, during the location or positioning movements.
- A device, according to one or more of the preceding claims, characterized in that said device comprises moreover cross-members (2) and (3), which are preferably provided with linear guides (23) and sliding blocks (24), on which said supporting bar (1) is assembled to allow the overall system to be axially driven.
- A device, according to one or more of the preceding claims, characterized in that said device is adapted to be axially driven by mechanical members driven by electric motors or oleodynamic pistons or manually adjusted systems.
- A device, according to one or more of the preceding claims, characterized in that said main shafts (12) and (14) alternately support said precreasing and creasing discs, i.e. the bottom discs, cooperating with top counter-precreasing and counter-creasing discs.
- A device, according to one or more of the preceding claims, characterized in that in said device an adjustment of the spacing of the counter-precreasing, counter-creasing, counter-slitting and counter die-cutting discs, arranged at a lower level than the precreasing discs, ceasing discs, die-cutting discs and top cooperating belts cooperating with the counter-slitting discs, is performed depending on a changing of the thickness of the paperboard material to be processed, and requires that said solenoid valves (10) are opened thereby discharging the hydraulic fluid from said hydraulic circuit, and switching off the pistons of the jacks (6).
- A device, according to one or more of the preceding claims, characterized in that, after having adjusted the required position of said main shafts (11), (12), (13) and (14), the supply pump (8), with the solenoid valves (10) in an opened condition, recovers the operation or urging of the pistons of the jacks (6), by pressurizing said hydraulic circuit, so as to achieve a preset value on the pressure switch (9).
- A device, according to one or more of the preceding claims, characterized in that each of said hydraulic jack (6) is controlled by a respective solenoid valve (10), which is closed as a desired and preset pressure value is achieved.
- A device, according to one or more of the preceding claims, characterized in that in said device possible pressure drops, occurring during the operation of said device, are immediately compensated for by an automatic temporary switching on of said oleodynamic pump (8).
- A device, according to one or more of the preceding claims, characterized in that said device comprises a plurality of constructional elements as suitably designed and mutually coordinated, and as broadly disclosed and illustrated in the preceding disclosure and in the figures of the drawings accompanying the present industrial invention Patent application.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT002025A ITMI20032025A1 (en) | 2003-10-17 | 2003-10-17 | DEVICE APPLICABLE TO MACHINES FOR CARDBOARD WORKING OR OTHER MATERIALS TO PREVENT THE FOLDING OF THE MAIN TREES |
ITMI20032025 | 2003-10-17 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1524220A2 true EP1524220A2 (en) | 2005-04-20 |
EP1524220A3 EP1524220A3 (en) | 2008-04-23 |
EP1524220B1 EP1524220B1 (en) | 2009-12-16 |
Family
ID=34362426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04024378A Active EP1524220B1 (en) | 2003-10-17 | 2004-10-13 | Device for application in paperboard or other material processing machines for preventing main shafts from bending |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1524220B1 (en) |
AT (1) | ATE452095T1 (en) |
DE (1) | DE602004024627D1 (en) |
ES (1) | ES2338230T3 (en) |
IT (1) | ITMI20032025A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7408979A (en) * | 1973-10-12 | 1975-04-15 | Voest Ag | DEVICE FOR MOVING TIRE MOLD PIECES IN THEIR LONG DIRECTION. |
DE3004273A1 (en) * | 1980-02-06 | 1981-08-13 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | ARCH GRIPPER DEVICE |
EP0575265A1 (en) * | 1992-06-17 | 1993-12-22 | Eastman Kodak Company | Device for holding in position a shaft in contact with which a strip passes and a cutting machine using such a device |
-
2003
- 2003-10-17 IT IT002025A patent/ITMI20032025A1/en unknown
-
2004
- 2004-10-13 EP EP04024378A patent/EP1524220B1/en active Active
- 2004-10-13 AT AT04024378T patent/ATE452095T1/en not_active IP Right Cessation
- 2004-10-13 ES ES04024378T patent/ES2338230T3/en active Active
- 2004-10-13 DE DE602004024627T patent/DE602004024627D1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7408979A (en) * | 1973-10-12 | 1975-04-15 | Voest Ag | DEVICE FOR MOVING TIRE MOLD PIECES IN THEIR LONG DIRECTION. |
DE3004273A1 (en) * | 1980-02-06 | 1981-08-13 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | ARCH GRIPPER DEVICE |
EP0575265A1 (en) * | 1992-06-17 | 1993-12-22 | Eastman Kodak Company | Device for holding in position a shaft in contact with which a strip passes and a cutting machine using such a device |
Also Published As
Publication number | Publication date |
---|---|
ES2338230T3 (en) | 2010-05-05 |
EP1524220B1 (en) | 2009-12-16 |
DE602004024627D1 (en) | 2010-01-28 |
EP1524220A3 (en) | 2008-04-23 |
ATE452095T1 (en) | 2010-01-15 |
ITMI20032025A1 (en) | 2005-04-18 |
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