CA2482118A1 - Working station of a machine processing plate elements - Google Patents
Working station of a machine processing plate elements Download PDFInfo
- Publication number
- CA2482118A1 CA2482118A1 CA002482118A CA2482118A CA2482118A1 CA 2482118 A1 CA2482118 A1 CA 2482118A1 CA 002482118 A CA002482118 A CA 002482118A CA 2482118 A CA2482118 A CA 2482118A CA 2482118 A1 CA2482118 A1 CA 2482118A1
- Authority
- CA
- Canada
- Prior art keywords
- gripper bar
- fixedly attached
- frame
- axle
- working tool
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
- B65H29/08—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being oscillated in arcuate paths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
- B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
- B65H29/04—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
- B65H29/042—Intermediate conveyors, e.g. transferring devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1818—Means for removing cut-out material or waste by pushing out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2403/00—Power transmission; Driving means
- B65H2403/50—Driving mechanisms
- B65H2403/51—Cam mechanisms
-
- 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
- B65H2404/30—Chains
- B65H2404/34—Gripper bars bridging at least two chains running synchronously and parallely
-
- 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
- B65H2701/173—Metal
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Advancing Webs (AREA)
- Discharge By Other Means (AREA)
- Specific Conveyance Elements (AREA)
- Feeding Of Workpieces (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Working station of a machine processing plate elements, comprising a frame (1), a working tool (9), a transverse gripper bar (2) for seizing the leading edge of said sheet, two drive chains (4) from each which two link axles (5, 6) are fixedly attached to the respective ends of said gripper bar (2), chain guides (8) fixedly attached to said frame (1) and means for bringing closer said gripper bar (2) to said working tool (9). A cam sensor (12) fixedly attached to each end of said gripper bar (2), a lowering cam (10) of said gripper bar, fixedly attached to said frame (1) as well as the broken chain guides (8) enable swivelling the grippers (3) of said gripper bar (2) about the front link axle (5) while supporting onto said chain guides (8).
Description
- 'f - JBF285 ItVORKiNG STATION OF A MACHINE PROCESSING PLATE ELEMENTS
The present invention refers to a working station of a machine processing plate elements, for example a waste stripping station of a sheet diecut into a platen press, comprising a frame, a working too(, for example a stripping plate on which said sheet must be laid, a transverse gripper bar for seizing the leading edge of said sheet, two flexible drive devices shaped Pike endless loops each fixedly attached fio one end of said gripper bar, means for guiding said flexible drive devices on said frame and means for bringing said 1 o gripper bar closer to said working tool when said gripper bar crosses the downstream end of said working tool.
Several solutions were already proposed for bringing the sheets conveyed by the gripper bar into contact with the stripping plate. Among the latter, one can divide said solutions between the ones wherein the gripper bar remains on a rectilinear trajectory and the working tool, for example the str ipping plate, i.e. whose leading edge only, moves towards the sheet and the others wherein the gripper bar comes closer to the working tool. Among the fatter solutions, one proposed to move the chain guides and the gripper bar, where the motion is in synchronism with the control of other processing operations of the plate element, i.e. of the stripping operation. Such a solution is extremely complicated, insofar as for moving such a unit, it is necessary to foresee means for guiding the cams. Moreover, the density of such a movable unit owns acceleration problems limiting the rna~hine rates and needs complicated jointed chain guides comprising control pull rods for the 2 5 lengthening of the chain guides, enabling the latter to follow the chains .
direction.
One proposed to obviate said drawback by inserting a cam at the gripper bar ends between two chain (inks and by arranging for a fixed roll into these cams trajectory. The length of said cams being thus limited by the one of the fastening device connecting the gripper bar to the chains whose length is limited by the diameter of the sprocket wheels, insofar the acceleration of the gripper bar is very important. if said acceleration is tolerable referring to thick cardboard sheets, namely with corrugated board, it is not for thinner and thus more delicate sheets. Since the drive chains of the gripper bars are shaped like endless loops rotating about wheels, it is not possible fio increase these cams length, the latter cannot thus be longer that said chains finks.
One also proposed to bend the gripper bar trajectory through tk~e chain guides shape, for bringing said gripper bar downwards to its stop end related to the area where the grippers of the gripper bar are at the front end of the working tool. Such a solution is in a way to create a fault when usually guiding the chains, forcing them to follow said bent trajectory, not only when the gripper bar reaches its stop end with a low speed, even near to zero, but also during the whole end at the sheets travelling cycle at high speed, obviously causing wear and vibration problems.
The aim of the present invention is to obviate, at leasfi partly, the drawbacks of abovementioned solutions.
To this aim, this invention refers to a working station of a machine processing plate elements in accordance to claim 1.
Thanks to said solution, the moving masses are relatively weak.
Since the lowering cam of the gripper bar is mounted on the frame of the platen press and not anymore between two chain links, it enables appreciably increasing its length, because the fatter is not anymore depending on the chain links length, and it enables also reducing accelerations. The working station according to the invention can thus be used for processing thinner and less inflexible sheets than those that were processed according to .the prior art.
2 o Another advantage of said solution is due to its simplicity, being a liabif ity proof.
As one will notice in the following description, the fitting of the devices of said working station is accurate and easy to carry out.
Further features and advantages of the invention will becom a evident from the reading of the following description and from the enclosed drawings illustrating, schematically and by way of example, an embodiment of the working station of a machine processing plate elements, prefefabiy applied into a stripping station, according to the present invention.
Fig. 1 is a sectional view according to the line I-I of Fig. 3;
Fig. 2 is an elevation view according to the line ll-II of Fig. 't;
Fig. 3 is a top view according to the line !II-Ill of Fig. 1;
In the following description, the displacement of the gripper bar will be shown by the arrow F. Since the invention relates especially to the delivering of the processed sheets onto the working tool, namely the stripping plate and not to the stripping operation itself, the waste stripping and the means i n use for said stripping will be neither described nor illustrated wifihin the following description. However, since the mechanism of the stripping device according to the invention is symmetrically arranged with respect to the longitudinal median axle of the platen press to which said stripping device is related, said axle corresponding to the conveying direction F of the diecut sheets, only one side of said working station is shown on the figures of the enclosed drawing and will thus be described below.
The working station illustrated on Figs. 1 to 3 comprises a frame 1, from which only the part located at one side of the trajectory of the sheets to process is to be seen, a transverse gripper bar 2 equipped with grippers 3 for seizing the leading edge of the sheets to process (not shown). Each end of said to gripper bar is connected to a drive chain 4 by means of two front link axles 5, respectively rear 6, of said drive chain 4, each fixedly attached to a fastening piece 7 extending on both sides of the drive chain 4. Said two axles 5, 6 are mounted at both ends of the drive chain 4, connected one another by means of the fastening piece 7 while forming an endless loop.
Since only one side of the gripper bar 2 is illustrated on the drawing Figs., only one chain is also illustrated. T he connection between the gripper'bar 2 and the drive chains 4 is weal-known in the art and its detailed description is thus of no need to understand the present invention.
Each drive chain 4 is supporting on a chain guide 8 and crosses 2 o commonly for that kind of machine two sprocket wheels (not shown). The drive chains 4 on vihich a certain tension is imparted are deemed for maintaining the link axles front 5 and rear 6 within the alignment of other chain links of said drive chains 4, being thus also intended as pull-back means for maintaining the gripper bar 2 in an angular determined position with respect to the link .axles front 5 and rear 6. As shown on Fig. 1, said chain guide 8 comprises, at the output of the working station, where the gripper bar 2 deposits each sheet onto a stripping plate 9, a short lowering ramp 8a followed by a break of a given length. At the end of the break, the chain guide 8 restarts with a short raising ramp 8b.
3 0 A lowering cam 10 of the gripper bar 2 is located opposite to the break of the chain guide 8. Said cam 10 is fastened to the frame 1 by means of screws 11. The upper edge of said cam 10 is under a projected part 1a of the frame 1 (Figs. 1 and 2).
A sensor roller 12, fixedly attached to the gripper bar 2, is mounted preferably at each end of said gripper bar 2, Said roller is arranged in the vicinity of the rear link axle 6 of the drive chain 4, connecting the latter to the - 4 - ,lBF285 fastening piece 7, the latter being arranged nearly to the grippers 3 of the gripper bar 2 and the sensor roller 12.
When said sensor roller 12 fixedly attached to the gripper bar 2 comes under the corn 10, it progressively moves downwardly the rear edge of the gripper bar 2. The front axle 5 being maintained by the chain guide 8, fihe gripper bar is swivelling about said front axle 5 with an angle cc as shown on Fig.
1, while bringing the front edge of the sheet, seized by the grippers 3 of the gripper bar 2 to the level of the working tool 9.
Since when the cam 10 is pivoting the rear edge of the gripper bar 2, it causes an overload of the drive chains 4, whilst the gripper bar 2 carries on its displacement into the direction of arrow F, the sensor roller 12 follows the lower edge of the cam 10, enabling thus the rear pivoting axle 6 to raise, and meets then the raising ramp 8b of the chain guide 8 that is driving again the two link axles 5, 6 between the gripper bar 2 and the drive chains 4 arranged at both ends of said gripper bar 2.
As one can notice, the linear cam 10;, whose length is not limited by the driving chain links one; enables (uniting the accelerations of the gripper bar 2 along its swinging motion about the front axle 5. This lengthening of the travel length of the gripper bar 2 during its lowering is added to the fact that the space between the link axles 5 and 6 connecting said drive chains 4 to the gripper bar 2 is slightly more important than the length of one link of these chains 4, increasing thus the swivelling radius of the movable axle 6 about the fixed axle 5 that is supporting on the chain guide 8.
The means used for the result are particularly simple, as far as the manufacturing and the machine use are concerned. The means used are slightly more simple than for the great part of the proposed solutions for bringing the diecut sheets onto the stripping plate. The solution according to the invention, with respect to the one using movable cams fixedly attached to the drive chains, is all the most simple but enables on the other hand reducing the 3 o accelerations imparted to the gripper bar, this being not possible when the cam length is limited by the space between the axles of the links of the drive chain 4.
Since said drive chains are effectively travelling about sprocket wheels so as to enable the gripper bars seizing another sheet to achieve a new diecuttinglstripping cycle, these cams length cannot be slightly more important than the one of the space between the axles of the finks. However, the lowering motion of the gripper bar being constant as well as the links length, the acceleration imparted to the gripper bar 2 by the lowering cams 10 is in relationship with the drive speed of the gripper bars, limiting thus said drive speed and consequently the platen press rate.
While enabling to slightly increase the time duration of the gripper bar lowering thanks to the appreciable increase of the length of the cam 10 with respect to the cams fixedly attached to the drive chains and owning to the fact that the space between the link axles front 5 and rear 6 connecting the gripper bar 2 to the drive chains 4 is more important that the links length, one can thus appreciably increase with -constant speed, the processing rate of the diecut sheets into the platen press according to the device of the invention.
According to the kind of sheets to .be processed, one could at the contrary work with a lower rate for reducing the accelerations imparted to the sheet at the time of the lowering of the gripper bar 2.
Several alternatives of abovementioned working station could be intended. Thus, since the abovementioned description refers to the use of drive chains 4, being the usual drive means for this kind of machine, orie could also deem using any other connecting and driving means like belts, belts with driving organs, steel belts or reinforced belts, etc... Although in the illustrated embodiment, the means for bringing back the gripper bar 2 into a determined 2 0 position about the axles front 5 and rear 6 are made of the drive chains tension, one could also think about another connecting device betuveen the gripper bar and the drive chains 4 as welt as separate means from said chains 4 for bringing back the gripper bar 2 into a determined position about a single firansverse axle fixedly attached to chains 4. Lastly, although one uses preferably two lowering cams 70, one at each er~d of the gripper bar, one could also use only one that could be arranged in the middle of the gripper bar instead of at whose one end.
The present invention refers to a working station of a machine processing plate elements, for example a waste stripping station of a sheet diecut into a platen press, comprising a frame, a working too(, for example a stripping plate on which said sheet must be laid, a transverse gripper bar for seizing the leading edge of said sheet, two flexible drive devices shaped Pike endless loops each fixedly attached fio one end of said gripper bar, means for guiding said flexible drive devices on said frame and means for bringing said 1 o gripper bar closer to said working tool when said gripper bar crosses the downstream end of said working tool.
Several solutions were already proposed for bringing the sheets conveyed by the gripper bar into contact with the stripping plate. Among the latter, one can divide said solutions between the ones wherein the gripper bar remains on a rectilinear trajectory and the working tool, for example the str ipping plate, i.e. whose leading edge only, moves towards the sheet and the others wherein the gripper bar comes closer to the working tool. Among the fatter solutions, one proposed to move the chain guides and the gripper bar, where the motion is in synchronism with the control of other processing operations of the plate element, i.e. of the stripping operation. Such a solution is extremely complicated, insofar as for moving such a unit, it is necessary to foresee means for guiding the cams. Moreover, the density of such a movable unit owns acceleration problems limiting the rna~hine rates and needs complicated jointed chain guides comprising control pull rods for the 2 5 lengthening of the chain guides, enabling the latter to follow the chains .
direction.
One proposed to obviate said drawback by inserting a cam at the gripper bar ends between two chain (inks and by arranging for a fixed roll into these cams trajectory. The length of said cams being thus limited by the one of the fastening device connecting the gripper bar to the chains whose length is limited by the diameter of the sprocket wheels, insofar the acceleration of the gripper bar is very important. if said acceleration is tolerable referring to thick cardboard sheets, namely with corrugated board, it is not for thinner and thus more delicate sheets. Since the drive chains of the gripper bars are shaped like endless loops rotating about wheels, it is not possible fio increase these cams length, the latter cannot thus be longer that said chains finks.
One also proposed to bend the gripper bar trajectory through tk~e chain guides shape, for bringing said gripper bar downwards to its stop end related to the area where the grippers of the gripper bar are at the front end of the working tool. Such a solution is in a way to create a fault when usually guiding the chains, forcing them to follow said bent trajectory, not only when the gripper bar reaches its stop end with a low speed, even near to zero, but also during the whole end at the sheets travelling cycle at high speed, obviously causing wear and vibration problems.
The aim of the present invention is to obviate, at leasfi partly, the drawbacks of abovementioned solutions.
To this aim, this invention refers to a working station of a machine processing plate elements in accordance to claim 1.
Thanks to said solution, the moving masses are relatively weak.
Since the lowering cam of the gripper bar is mounted on the frame of the platen press and not anymore between two chain links, it enables appreciably increasing its length, because the fatter is not anymore depending on the chain links length, and it enables also reducing accelerations. The working station according to the invention can thus be used for processing thinner and less inflexible sheets than those that were processed according to .the prior art.
2 o Another advantage of said solution is due to its simplicity, being a liabif ity proof.
As one will notice in the following description, the fitting of the devices of said working station is accurate and easy to carry out.
Further features and advantages of the invention will becom a evident from the reading of the following description and from the enclosed drawings illustrating, schematically and by way of example, an embodiment of the working station of a machine processing plate elements, prefefabiy applied into a stripping station, according to the present invention.
Fig. 1 is a sectional view according to the line I-I of Fig. 3;
Fig. 2 is an elevation view according to the line ll-II of Fig. 't;
Fig. 3 is a top view according to the line !II-Ill of Fig. 1;
In the following description, the displacement of the gripper bar will be shown by the arrow F. Since the invention relates especially to the delivering of the processed sheets onto the working tool, namely the stripping plate and not to the stripping operation itself, the waste stripping and the means i n use for said stripping will be neither described nor illustrated wifihin the following description. However, since the mechanism of the stripping device according to the invention is symmetrically arranged with respect to the longitudinal median axle of the platen press to which said stripping device is related, said axle corresponding to the conveying direction F of the diecut sheets, only one side of said working station is shown on the figures of the enclosed drawing and will thus be described below.
The working station illustrated on Figs. 1 to 3 comprises a frame 1, from which only the part located at one side of the trajectory of the sheets to process is to be seen, a transverse gripper bar 2 equipped with grippers 3 for seizing the leading edge of the sheets to process (not shown). Each end of said to gripper bar is connected to a drive chain 4 by means of two front link axles 5, respectively rear 6, of said drive chain 4, each fixedly attached to a fastening piece 7 extending on both sides of the drive chain 4. Said two axles 5, 6 are mounted at both ends of the drive chain 4, connected one another by means of the fastening piece 7 while forming an endless loop.
Since only one side of the gripper bar 2 is illustrated on the drawing Figs., only one chain is also illustrated. T he connection between the gripper'bar 2 and the drive chains 4 is weal-known in the art and its detailed description is thus of no need to understand the present invention.
Each drive chain 4 is supporting on a chain guide 8 and crosses 2 o commonly for that kind of machine two sprocket wheels (not shown). The drive chains 4 on vihich a certain tension is imparted are deemed for maintaining the link axles front 5 and rear 6 within the alignment of other chain links of said drive chains 4, being thus also intended as pull-back means for maintaining the gripper bar 2 in an angular determined position with respect to the link .axles front 5 and rear 6. As shown on Fig. 1, said chain guide 8 comprises, at the output of the working station, where the gripper bar 2 deposits each sheet onto a stripping plate 9, a short lowering ramp 8a followed by a break of a given length. At the end of the break, the chain guide 8 restarts with a short raising ramp 8b.
3 0 A lowering cam 10 of the gripper bar 2 is located opposite to the break of the chain guide 8. Said cam 10 is fastened to the frame 1 by means of screws 11. The upper edge of said cam 10 is under a projected part 1a of the frame 1 (Figs. 1 and 2).
A sensor roller 12, fixedly attached to the gripper bar 2, is mounted preferably at each end of said gripper bar 2, Said roller is arranged in the vicinity of the rear link axle 6 of the drive chain 4, connecting the latter to the - 4 - ,lBF285 fastening piece 7, the latter being arranged nearly to the grippers 3 of the gripper bar 2 and the sensor roller 12.
When said sensor roller 12 fixedly attached to the gripper bar 2 comes under the corn 10, it progressively moves downwardly the rear edge of the gripper bar 2. The front axle 5 being maintained by the chain guide 8, fihe gripper bar is swivelling about said front axle 5 with an angle cc as shown on Fig.
1, while bringing the front edge of the sheet, seized by the grippers 3 of the gripper bar 2 to the level of the working tool 9.
Since when the cam 10 is pivoting the rear edge of the gripper bar 2, it causes an overload of the drive chains 4, whilst the gripper bar 2 carries on its displacement into the direction of arrow F, the sensor roller 12 follows the lower edge of the cam 10, enabling thus the rear pivoting axle 6 to raise, and meets then the raising ramp 8b of the chain guide 8 that is driving again the two link axles 5, 6 between the gripper bar 2 and the drive chains 4 arranged at both ends of said gripper bar 2.
As one can notice, the linear cam 10;, whose length is not limited by the driving chain links one; enables (uniting the accelerations of the gripper bar 2 along its swinging motion about the front axle 5. This lengthening of the travel length of the gripper bar 2 during its lowering is added to the fact that the space between the link axles 5 and 6 connecting said drive chains 4 to the gripper bar 2 is slightly more important than the length of one link of these chains 4, increasing thus the swivelling radius of the movable axle 6 about the fixed axle 5 that is supporting on the chain guide 8.
The means used for the result are particularly simple, as far as the manufacturing and the machine use are concerned. The means used are slightly more simple than for the great part of the proposed solutions for bringing the diecut sheets onto the stripping plate. The solution according to the invention, with respect to the one using movable cams fixedly attached to the drive chains, is all the most simple but enables on the other hand reducing the 3 o accelerations imparted to the gripper bar, this being not possible when the cam length is limited by the space between the axles of the links of the drive chain 4.
Since said drive chains are effectively travelling about sprocket wheels so as to enable the gripper bars seizing another sheet to achieve a new diecuttinglstripping cycle, these cams length cannot be slightly more important than the one of the space between the axles of the finks. However, the lowering motion of the gripper bar being constant as well as the links length, the acceleration imparted to the gripper bar 2 by the lowering cams 10 is in relationship with the drive speed of the gripper bars, limiting thus said drive speed and consequently the platen press rate.
While enabling to slightly increase the time duration of the gripper bar lowering thanks to the appreciable increase of the length of the cam 10 with respect to the cams fixedly attached to the drive chains and owning to the fact that the space between the link axles front 5 and rear 6 connecting the gripper bar 2 to the drive chains 4 is more important that the links length, one can thus appreciably increase with -constant speed, the processing rate of the diecut sheets into the platen press according to the device of the invention.
According to the kind of sheets to .be processed, one could at the contrary work with a lower rate for reducing the accelerations imparted to the sheet at the time of the lowering of the gripper bar 2.
Several alternatives of abovementioned working station could be intended. Thus, since the abovementioned description refers to the use of drive chains 4, being the usual drive means for this kind of machine, orie could also deem using any other connecting and driving means like belts, belts with driving organs, steel belts or reinforced belts, etc... Although in the illustrated embodiment, the means for bringing back the gripper bar 2 into a determined 2 0 position about the axles front 5 and rear 6 are made of the drive chains tension, one could also think about another connecting device betuveen the gripper bar and the drive chains 4 as welt as separate means from said chains 4 for bringing back the gripper bar 2 into a determined position about a single firansverse axle fixedly attached to chains 4. Lastly, although one uses preferably two lowering cams 70, one at each er~d of the gripper bar, one could also use only one that could be arranged in the middle of the gripper bar instead of at whose one end.
Claims (3)
1. Working station of a machine processing plate elements, comprising a frame (1), a working tool (9) onto which said plate is arranged, a transverse gripper bar (2) for seizing the leading edge of said sheet, two flexible drive devices (4) shaped like endless loops each fixedly attached to one end of said gripper bar (2), means for guiding said flexible drive devices onto said frame and means for bringing closer said gripper bar (2) of said working tool (9), when said gripper bar (2) crosses the downstream end of said working tool (9), characterized in that said gripper bar (2) comprises at least one transverse link axle (5, 6) with respect to said drive devices and is connected to pull-back means for maintaining it in a determined position about said transverse link axle (5, 6) and to at least one cam sensor (12) forming a lever-arm with respect to said transverse fink axle and in that one lowering cam (10) of said gripper bar (2), fixedly attached to said frame (1), is arranged on the trajectory of said sensor (12) for swivelling said gripper bar (2) about said fink axle (5, 6) for temporarily bringing closer said grippers to said working tool (9).
2. Working station according to claim 1, wherein two drive chains (4) from each which two link axles, front (5) respectively rear (6), are fixedly attached to the respective ends of said gripper bar (2), wherein chain guides (8) fixedly attached to said frame (1) are in contact with said chains (4) and are shaped for enabling swivelling the back of said gripper bar (2) about said front link axle (5) supported on said chain guides (8), at the time of the meeting of said sensors (12) with said cams (10).
3. Working station according to one of the preceding claims, wherein said cam sensors (12) are arranged in the vicinity of said rear link axles (6) between said gripper bar (2) and said chain guides (8).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH17092003 | 2003-10-08 | ||
| CH01709/03 | 2003-10-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2482118A1 true CA2482118A1 (en) | 2005-04-08 |
Family
ID=34398340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002482118A Abandoned CA2482118A1 (en) | 2003-10-08 | 2004-09-20 | Working station of a machine processing plate elements |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20050077673A1 (en) |
| JP (1) | JP2005111564A (en) |
| KR (1) | KR100635846B1 (en) |
| CN (1) | CN1616190A (en) |
| AU (1) | AU2004218631A1 (en) |
| BR (1) | BRPI0404334B1 (en) |
| CA (1) | CA2482118A1 (en) |
| TW (1) | TWI261042B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111516049A (en) * | 2020-05-22 | 2020-08-11 | 陈建生 | Circular rubber pad intercepting device |
| CN116493995A (en) * | 2023-06-28 | 2023-07-28 | 河北慧之源科技服务有限公司 | Piston processing device |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007031848A1 (en) * | 2007-07-09 | 2009-01-15 | Heidelberger Druckmaschinen Ag | Sheet punching and embossing machine and sheet alignment method |
| CN101835549B (en) * | 2007-10-25 | 2013-03-06 | 弗拉蒂尼建筑机械公开有限公司 | Apparatus for working on metal containers with a container transporting apparatus |
| CN102555439A (en) * | 2012-01-12 | 2012-07-11 | 天津长荣印刷设备股份有限公司 | Gripper bar device with rollers and operating method of gripper bar device with rollers |
| KR101388514B1 (en) * | 2014-02-10 | 2014-04-23 | (주)성림엔지니어링 | Manufacturing equipment for chain link of caterpillar |
| JP2017526542A (en) * | 2014-08-26 | 2017-09-14 | ハイコン システムズ リミテッドＨｉｇｈｃｏｎ Ｓｙｓｔｅｍｓ Ｌｔｄ | Substrate stripping method and apparatus |
| US10556415B2 (en) | 2015-08-26 | 2020-02-11 | Highcon Systems Ltd | Method and apparatus for building a 3D object from layers of pre-stripped substrate |
| CN105538246B (en) * | 2015-12-08 | 2017-10-27 | 新沂城北新区城市建设发展有限公司 | A kind of table device that can be dust-proof and its application method for sheet fabrication |
| CN113751781B (en) * | 2021-09-02 | 2022-11-25 | 深圳市嘀嗒来电科技有限公司 | Pole piece batch fixing and cutting device for manufacturing lithium ion soft package battery |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3044084C2 (en) * | 1980-11-24 | 1985-09-26 | Bobst S.A., Lausanne | Gripper device for sheet processing machines |
| US5213318A (en) * | 1992-01-02 | 1993-05-25 | Am International Incorporated | Signature gatherer with light detector misfeed sensors |
| EP0675062B1 (en) * | 1994-03-24 | 1997-12-17 | Ferag AG | Device for feeding flat products to a processing device for printed products |
| CH690098A5 (en) * | 1994-05-04 | 2000-04-28 | Bobst Sa | Gripper bar comprising a fastening device with an undercarriage in a machine processing plate elements. |
| CH690097A5 (en) * | 1994-05-04 | 2000-04-28 | Bobst Sa | A fastening device of a gripper bar to a bar chains within a machine processing plate elements. |
| DE19848453A1 (en) * | 1997-11-18 | 1999-05-20 | Heidelberger Druckmasch Ag | Chain conveyor for moving sheets in printing machines |
| DE50003333D1 (en) * | 1999-05-07 | 2003-09-25 | Ferag Ag | Device for feeding flat objects to a processing device |
| US6357741B1 (en) * | 2000-01-20 | 2002-03-19 | Heidelberger Druckmaschinen Ag | Velocity adjustable grippers on sliding carriage |
| US6786482B2 (en) * | 2001-02-01 | 2004-09-07 | Hallmark Cards Incorporated | Material handler apparatus |
| DE10225647A1 (en) * | 2002-06-10 | 2003-12-24 | Heidelberger Druckmasch Ag | Positioning device for the gripper carriage of a sheet-processing punching and embossing machine |
| US6612567B1 (en) * | 2002-06-24 | 2003-09-02 | Heidelberger Druckmaschinen Ag | Adjustable gripping device for adjustable sheet-receiving pockets |
| US6705608B2 (en) * | 2002-07-01 | 2004-03-16 | Heidelberger Druckmaschinen Ag | Sheet material conveying apparatus with adjustable top grippers for pockets |
-
2004
- 2004-09-06 TW TW093126862A patent/TWI261042B/en active
- 2004-09-20 CA CA002482118A patent/CA2482118A1/en not_active Abandoned
- 2004-10-06 AU AU2004218631A patent/AU2004218631A1/en not_active Abandoned
- 2004-10-07 US US10/960,307 patent/US20050077673A1/en not_active Abandoned
- 2004-10-07 JP JP2004294597A patent/JP2005111564A/en active Pending
- 2004-10-08 BR BRPI0404334A patent/BRPI0404334B1/en active IP Right Grant
- 2004-10-08 CN CNA2004100835163A patent/CN1616190A/en active Pending
- 2004-10-08 KR KR1020040080487A patent/KR100635846B1/en active IP Right Grant
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111516049A (en) * | 2020-05-22 | 2020-08-11 | 陈建生 | Circular rubber pad intercepting device |
| CN116493995A (en) * | 2023-06-28 | 2023-07-28 | 河北慧之源科技服务有限公司 | Piston processing device |
| CN116493995B (en) * | 2023-06-28 | 2023-11-03 | 河北慧之源科技服务有限公司 | Piston processing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005111564A (en) | 2005-04-28 |
| KR100635846B1 (en) | 2006-10-18 |
| TW200524808A (en) | 2005-08-01 |
| US20050077673A1 (en) | 2005-04-14 |
| BRPI0404334A (en) | 2005-06-14 |
| CN1616190A (en) | 2005-05-18 |
| KR20050033865A (en) | 2005-04-13 |
| BRPI0404334B1 (en) | 2015-10-27 |
| AU2004218631A1 (en) | 2005-04-28 |
| TWI261042B (en) | 2006-09-01 |
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