CA3016244C - Ejector member and machine for processing sheet-form elements - Google Patents
Ejector member and machine for processing sheet-form elements Download PDFInfo
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- CA3016244C CA3016244C CA3016244A CA3016244A CA3016244C CA 3016244 C CA3016244 C CA 3016244C CA 3016244 A CA3016244 A CA 3016244A CA 3016244 A CA3016244 A CA 3016244A CA 3016244 C CA3016244 C CA 3016244C
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- 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
-
- 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
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/003—Delivering or advancing articles from machines; Advancing articles to or into piles by grippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Details Of Cutting Devices (AREA)
- Making Paper Articles (AREA)
- Discharge By Other Means (AREA)
- Rotary Pumps (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Treatment Of Fiber Materials (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Physical Deposition Of Substances That Are Components Of Semiconductor Devices (AREA)
Abstract
L'invention concerne un organe éjecteur (2) pour l'évacuation de déchets de feuilles à la volée dans une machine de traitement des éléments en forme de feuilles (1) comprenant un peigne (4) comportant une pluralité de dents (10), caractérisé en ce que le peigne (4) est configuré pour pouvoir prendre une première position basse cadence et au moins une deuxième position haute cadence, le centre du peigne (4) étant en retrait par rapport aux extrémités latérales du peigne (4) dans la deuxième position haute cadence, le centre du peigne (4) étant plus en retrait dans la deuxième position haute cadence que dans la première position basse cadence. L'invention se rapporte aussi à une machine de traitement d'éléments en forme de feuilles comportant un tel organe éjecteur.
Description
EJECTOR MEMBER AND MACHINE FOR PROCESSING SHEET-FORM ELEMENTS
The present invention relates to an ejector member for removing waste from sheets on the fly in a machine for processing sheet-form elements. The invention also relates to a machine for processing sheet-form elements comprising such an ejector member.
Separating copies involves, after shaping and ejecting the waste, severing the points attaching the copies on a sheet and receiving the copies in the receiving zone. The remaining part of the sheet, also referred to as the waste, remains gripped in the grippers of the gripper bar of the sheet transfer device sa that it can be taken to the waste removal station.
The gripper bar is usually driven by two looped chains positioned respectively on one of the two sides of the punching press and to which the two ends of the gripper bars are fixed. A static ejector in the form of a comb extending transversely with respect to the direction of travel of the waste transported by the gripper bar, is arranged in the waste removal station.
The path of the gripper bar is synchronized with its opening at the waste removal station sa that on ascending the bend of the chainset loop, the grippers of the bar open as they intercept the ejector. The sheet carried by the gripper bar is released before it strikes the comb with the teeth which pass between the grippers of the gripper bar sa that it
The present invention relates to an ejector member for removing waste from sheets on the fly in a machine for processing sheet-form elements. The invention also relates to a machine for processing sheet-form elements comprising such an ejector member.
Separating copies involves, after shaping and ejecting the waste, severing the points attaching the copies on a sheet and receiving the copies in the receiving zone. The remaining part of the sheet, also referred to as the waste, remains gripped in the grippers of the gripper bar of the sheet transfer device sa that it can be taken to the waste removal station.
The gripper bar is usually driven by two looped chains positioned respectively on one of the two sides of the punching press and to which the two ends of the gripper bars are fixed. A static ejector in the form of a comb extending transversely with respect to the direction of travel of the waste transported by the gripper bar, is arranged in the waste removal station.
The path of the gripper bar is synchronized with its opening at the waste removal station sa that on ascending the bend of the chainset loop, the grippers of the bar open as they intercept the ejector. The sheet carried by the gripper bar is released before it strikes the comb with the teeth which pass between the grippers of the gripper bar sa that it
- 2 -pivots onto the discharge belt.
Ejection is said to be "on the fly" because the about-turn path of the gripper bar in the waste removal station is employed directly in order to cause the cut sheet to pivot onto the discharge belt. Ejection on the fly makes it possible to save on a gripper bar. Specifically, without on-the-fly ejection, in order to remove the cut sheet from the gripper bar, the machine would need to comprise an additional waste-removal station in which the gripper bar would stop in order to set down the sheet of waste. The chainsets would then need to be lengthened by one additional gripper bar, something which is expensive and takes up space.
This method of removing waste on the fly works provided that, once the gripper bar is open, the interception between the comb and the grippers shows the comb to corne into contact with the sheet of waste and allows the grippers to pass between the teeth of the comb without contact therewith.
However, as the gripper bar performs its about-turn, it is subjected to a centrifugai force the intensity of which increases with the increase in machine throughput. At high throughput, such as at 10 000 sheets/hour and beyond, the gripper bar deforms under the effect of the centrifugai force. The conditions of interception between the gripper bar and the static ejector can then no longer be guaranteed and the waste removal functionality may therefore no longer be correctly assured.
Ejection is said to be "on the fly" because the about-turn path of the gripper bar in the waste removal station is employed directly in order to cause the cut sheet to pivot onto the discharge belt. Ejection on the fly makes it possible to save on a gripper bar. Specifically, without on-the-fly ejection, in order to remove the cut sheet from the gripper bar, the machine would need to comprise an additional waste-removal station in which the gripper bar would stop in order to set down the sheet of waste. The chainsets would then need to be lengthened by one additional gripper bar, something which is expensive and takes up space.
This method of removing waste on the fly works provided that, once the gripper bar is open, the interception between the comb and the grippers shows the comb to corne into contact with the sheet of waste and allows the grippers to pass between the teeth of the comb without contact therewith.
However, as the gripper bar performs its about-turn, it is subjected to a centrifugai force the intensity of which increases with the increase in machine throughput. At high throughput, such as at 10 000 sheets/hour and beyond, the gripper bar deforms under the effect of the centrifugai force. The conditions of interception between the gripper bar and the static ejector can then no longer be guaranteed and the waste removal functionality may therefore no longer be correctly assured.
- 3 -It is therefore one of the objects of the present invention to propose an improved ejector member that makes it possible to guarantee on-the-fly ejection of waste both at low and at high throughput.
To this end, one subject of the present invention is an ejector member for removing waste on the fly from sheets in a machine for processing sheet-form elements, the ejector member comprising a comb, the comb comprising a plurality of teeth, the comb is moveable between a low-throughput first position and at least one high-throughput second position, a center of the comb being set back with respect to lateral ends of the comb in the high-throughput second position, the center of the comb being set back further in the high-throughput second position than in the low-throughput first position.
The position of the comb in the high-throughput second position when the gripper bar is deformed or in the low-throughput first position when the gripper bar is straight makes it possible to adapt the curvature of the comb to suit the machine throughput so that when the gripper bar and comb intercept one another, the shape of the comb best mimics the curvature of the moving gripper bar. The grippers can then pass between the teeth of the comb which strikes the sheet waste as well in the center of the gripper bar as at the ends thereof, without the risk of collisions.
According to one or more features of the ejector
To this end, one subject of the present invention is an ejector member for removing waste on the fly from sheets in a machine for processing sheet-form elements, the ejector member comprising a comb, the comb comprising a plurality of teeth, the comb is moveable between a low-throughput first position and at least one high-throughput second position, a center of the comb being set back with respect to lateral ends of the comb in the high-throughput second position, the center of the comb being set back further in the high-throughput second position than in the low-throughput first position.
The position of the comb in the high-throughput second position when the gripper bar is deformed or in the low-throughput first position when the gripper bar is straight makes it possible to adapt the curvature of the comb to suit the machine throughput so that when the gripper bar and comb intercept one another, the shape of the comb best mimics the curvature of the moving gripper bar. The grippers can then pass between the teeth of the comb which strikes the sheet waste as well in the center of the gripper bar as at the ends thereof, without the risk of collisions.
According to one or more features of the ejector
- 4 -member, considered alone or in combination, - in the low-throughput first position the overall shape of the comb is a straight une, - in the high-throughput second position, the overall shape of the comb which is concave is formed by at least two straight-line portions connected by their ends, the angle between two adjacent straight-line portions being less than 180 , - in the high-throughput second position, the overall shape of the comb can be inscribed inside a triangle, - in the high-throughput second position, the center of the comb is set back by a distance of between 1 and millimeters with respect to the position of the center of the comb in the low-throughput first position, - the comb comprises at least one deformable zone, - the deformable zone is formed by a thinning and/or at least one orifice, - the comb comprises at least one articulation, - the comb comprises at least two straight-line portions joined together and able to move relative to one another, - the ejector member comprises two straight-line portions joined together in the middle of the comb, - the at least two straight-line portions are joined together and joined to a base of the ejector member by at least three deformable zones of the comb,
- 5 -- at rest, the comb is in a high-throughput second position, - the ejector member comprises an actuating mechanism configured to cause the comb to adopt the low-throughput first position or a high-throughput second position, - the ejector member comprises two supports configured to be fixed to a respective chainset guide device of the processing machine, the supports collaborating with a respective side plate borne by a base of the ejector member which is connected to the comb in order to fix the base to the supports with an inclination that cari be modified in relation to the supports.
Another subject of the invention is a machine for processing sheet-form elements, comprising an ejector member as described hereinabove, arranged on a chain guide device of a transport device of the processing machine downstream of a copies-receiving station of the processing machine.
BRIEF DESCRIPTION OF THE DRAWINGS
Further àdvantages and features will become apparent from reading the description of the invention and front studying the attached figures which depict one nonlimiting exemplary embodiment of the invention and in which:
Figure 1 very schematically illustrates one example of
Another subject of the invention is a machine for processing sheet-form elements, comprising an ejector member as described hereinabove, arranged on a chain guide device of a transport device of the processing machine downstream of a copies-receiving station of the processing machine.
BRIEF DESCRIPTION OF THE DRAWINGS
Further àdvantages and features will become apparent from reading the description of the invention and front studying the attached figures which depict one nonlimiting exemplary embodiment of the invention and in which:
Figure 1 very schematically illustrates one example of
- 6 -a machine for processing sheet-form elements.
Figure 2 shows a side view of elements of an ejector member mounted on a transport device, for three different angular orientations of the ejector member.
Figure 3 shows the ejector member of figure 2 in the high-throughput second position.
Figure 4 shows the ejector member of figure 2 in the low-throughput first position.
Figure 5 shows an enlarged view of a deformable end zone of the comb.
In these figures, elements that are identical bear the same reference numerals. The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment or that features apply only to one single embodiment. Simple features from various embodiments can also be combined or interchanged to form other embodiments.
The longitudinal, vertical and transverse directions are designated as indicated in figures 1 and 3 by the trihedral frame of reference (L, V, T). The transverse direction T is the direction perpendicular to the longitudinal direction of travel of the sheets D. The horizontal plane corresponds to the (L, T) plane.
The terms upstream and downstream are defined with reference to the direction of travel of the board elements,
Figure 2 shows a side view of elements of an ejector member mounted on a transport device, for three different angular orientations of the ejector member.
Figure 3 shows the ejector member of figure 2 in the high-throughput second position.
Figure 4 shows the ejector member of figure 2 in the low-throughput first position.
Figure 5 shows an enlarged view of a deformable end zone of the comb.
In these figures, elements that are identical bear the same reference numerals. The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment or that features apply only to one single embodiment. Simple features from various embodiments can also be combined or interchanged to form other embodiments.
The longitudinal, vertical and transverse directions are designated as indicated in figures 1 and 3 by the trihedral frame of reference (L, V, T). The transverse direction T is the direction perpendicular to the longitudinal direction of travel of the sheets D. The horizontal plane corresponds to the (L, T) plane.
The terms upstream and downstream are defined with reference to the direction of travel of the board elements,
- 7 -as illustrated by the arrow D in figure 1. These elements move from upstream to downstream, generally along the longitudinal main axis of the machine, in a movement paced by periodic stoppages.
The terms "flat elements" and "sheets" will be considered to be equivalent, and will relate equally to elements made of corrugated board as to flat board, paper or any other material commonly used in the packaging industry.
It must be understood that throughout this text, the terms "sheet" or "sheet element" or "sheet-form element" relate very generally to any print medium in sheet form such as, for example, sheets of board, paper, plastic, etc.
Figure 1 depicts one example of a processing machine 1 for converting sheets. This processing machine 1 is made up in the conventional way of several workstations which are juxtaposed but interdependent on one another to form a unit assembly. Thus there are a feed station 100, a conversion station 300 for cutting the sheets, such as a station comprising a platen press 301, a waste ejection station 400, a copy separation station 500 where the converted sheets are reorganized into a pile and a waste removal station 600 where the cut sheet waste (generally in the form of a grid) are removed on the fly.
The operation of converting each sheet takes place in the conversion station 300, for example between a fixed platen and a lower platen, mounted with the ability to move,
The terms "flat elements" and "sheets" will be considered to be equivalent, and will relate equally to elements made of corrugated board as to flat board, paper or any other material commonly used in the packaging industry.
It must be understood that throughout this text, the terms "sheet" or "sheet element" or "sheet-form element" relate very generally to any print medium in sheet form such as, for example, sheets of board, paper, plastic, etc.
Figure 1 depicts one example of a processing machine 1 for converting sheets. This processing machine 1 is made up in the conventional way of several workstations which are juxtaposed but interdependent on one another to form a unit assembly. Thus there are a feed station 100, a conversion station 300 for cutting the sheets, such as a station comprising a platen press 301, a waste ejection station 400, a copy separation station 500 where the converted sheets are reorganized into a pile and a waste removal station 600 where the cut sheet waste (generally in the form of a grid) are removed on the fly.
The operation of converting each sheet takes place in the conversion station 300, for example between a fixed platen and a lower platen, mounted with the ability to move,
- 8 -of the press 301 for cutting the sheets to a template corresponding to the developed shape that is to be obtained, for example in order to obtain a plurality of boxes of a given shape. The mobile platen is successively raised and lowered once per machine cycle.
A transport device 70 is also provided to move each sheet individually from the exit of the feed station 100 as far as the waste removal station 600 via the press-involving conversion station 300.
The transport device 70 comprises a plurality of transverse bars provided with grippers, commonly referred to as gripper bars 75, which each in turn take hold of a sheet along its frontal edge, before pulling it in succession into the various workstations 300, 400, 500, 600 of the machine 1.
The ends of the gripper bars 75 are each respectively connected to a loop-forming lateral chain, commonly referred to as a chainset 80. Two chainsets 80 are thus arranged laterally on each side of the gripper bars 75.
The transport device 70 also comprises at least one chain guide device 90 configured to guide a respective chainset 80.
By virtue of a movement transmitted to the chainsets 80 at driving sprockets 72, the collection of gripper bars 75 will leave a stopped position, will accelerate, will attain a maximum speed, will decelerate, and will then stop, thus describing a cycle corresponding to the moving of a sheet
A transport device 70 is also provided to move each sheet individually from the exit of the feed station 100 as far as the waste removal station 600 via the press-involving conversion station 300.
The transport device 70 comprises a plurality of transverse bars provided with grippers, commonly referred to as gripper bars 75, which each in turn take hold of a sheet along its frontal edge, before pulling it in succession into the various workstations 300, 400, 500, 600 of the machine 1.
The ends of the gripper bars 75 are each respectively connected to a loop-forming lateral chain, commonly referred to as a chainset 80. Two chainsets 80 are thus arranged laterally on each side of the gripper bars 75.
The transport device 70 also comprises at least one chain guide device 90 configured to guide a respective chainset 80.
By virtue of a movement transmitted to the chainsets 80 at driving sprockets 72, the collection of gripper bars 75 will leave a stopped position, will accelerate, will attain a maximum speed, will decelerate, and will then stop, thus describing a cycle corresponding to the moving of a sheet
- 9 -from one workstation to the next workstation. The chainsets 80 move and stop periodically so that during each movement, ail the gripper bars 75 have moved on from one station to the adjacent workstation downstream. Each station performs its work in synchronism with this cycle which is commonly referred to as the machine cycle.
The number and nature of processing stations in a processing machine 1 can vary according to the nature and complexity of the operations to be performed on the sheets.
Within the context of the invention, the idea of a processing machine thus covers a very wide variety of embodiments because of the modular nature of these assemblies. Depending on the number, nature and layout of the workstations used it is actually possible to obtain a multitude of different processing machines. It is also important to emphasize that there are other types of workstation than those mentioned, such as embossing or scoring stations, or such as stations for loading stamping tapes for stamping or hot foil stamping machines, where patterns are created between the platens of a press by applying to each sheet a film that has come from one or more stamping tapes. Einally, it must be appreciated that the one same processing machine may very well be equipped with a number of stations of the one same type.
Elements of a transport devine 70 are schematically indicated in figure 1. This figure shows the plurality of gripper bars 75, eight in this example, that allow the sheets
The number and nature of processing stations in a processing machine 1 can vary according to the nature and complexity of the operations to be performed on the sheets.
Within the context of the invention, the idea of a processing machine thus covers a very wide variety of embodiments because of the modular nature of these assemblies. Depending on the number, nature and layout of the workstations used it is actually possible to obtain a multitude of different processing machines. It is also important to emphasize that there are other types of workstation than those mentioned, such as embossing or scoring stations, or such as stations for loading stamping tapes for stamping or hot foil stamping machines, where patterns are created between the platens of a press by applying to each sheet a film that has come from one or more stamping tapes. Einally, it must be appreciated that the one same processing machine may very well be equipped with a number of stations of the one same type.
Elements of a transport devine 70 are schematically indicated in figure 1. This figure shows the plurality of gripper bars 75, eight in this example, that allow the sheets
- 10 -to be moved to the various workstations 300, 400, 500, 600 of the machine 1, a chainset 80 and a chain guide device 90 arranged in the waste discharge station 600 downstream of the copies separation station 500. The driving sprockets 72 driving the chainsets 80 are arranged on the opposite side, near the feed station 100.
Best visible in figure 2, each chain guide device 90 comprises for example a pulley 91 or a sprocket wheel or a simple guide of cylindrical shape, as well as, for example, an upper chain guide 92 arranged substantially horizontally in the machine 1, to guide the chainset 80 as it leaves the pulley 91 and a lower chain guide 93 of curved shape so as to guide the chainset 80 through a bend in the loop toward the pulley 91. The chain guide devices 90 may be connected to one another by a transverse shaft of the machine 1 or may be connected separately to a moving part on each side.
The waste discharge station 600 comprises an ejector member 2 for discharging on the fly cut-sheet waste the front edge of which is engaged with the gripper bar 75.
The ejector member 2 comprises a base 3, a comb 4 connected to the base 3 and two lateral supports 5 which are configured to be fixed to a respective chainset guide device 90 for example to a chain guard for the lower chain guide 93 (not depicted).
The base 3 has for example a hollow parallelepipedal overall shape, for example made of sheet metal. The base 3
Best visible in figure 2, each chain guide device 90 comprises for example a pulley 91 or a sprocket wheel or a simple guide of cylindrical shape, as well as, for example, an upper chain guide 92 arranged substantially horizontally in the machine 1, to guide the chainset 80 as it leaves the pulley 91 and a lower chain guide 93 of curved shape so as to guide the chainset 80 through a bend in the loop toward the pulley 91. The chain guide devices 90 may be connected to one another by a transverse shaft of the machine 1 or may be connected separately to a moving part on each side.
The waste discharge station 600 comprises an ejector member 2 for discharging on the fly cut-sheet waste the front edge of which is engaged with the gripper bar 75.
The ejector member 2 comprises a base 3, a comb 4 connected to the base 3 and two lateral supports 5 which are configured to be fixed to a respective chainset guide device 90 for example to a chain guard for the lower chain guide 93 (not depicted).
The base 3 has for example a hollow parallelepipedal overall shape, for example made of sheet metal. The base 3
- 11 -for example bears side plates extending vertically and collaborating with the supports 5.
The comb 4 comprises a plurality of teeth 10, ten in this example (figures 3 and 4). The teeth 10 have substantially identical dimensions and are evenly spaced so as to allow the passage of the grippers of the gripper bars 75 in the spaces interposed between the teeth 10. The number and position of the teeth 10 may vary according to the type of gripper bar used.
The comb 4 is for example formed of two separate materials, for example superposed in plies, as visible in figure 5. The teeth 10 comprise for example a plastic material 4a at the lower part, making it possible to limit the noise of impact and a metallic material 4b in the upper part, providing good mechanical strength.
The supports 5 are configured to collaborate with a respective side plate borne by the base 3 to fix the base 3 with modifiable inclination with respect to the supports 5 (figure 2). The inclination of the comb 4 may thus be oriented according to the thickness of the waste sheet, something which makes it possible to ensure that the grippers of the gripper bar 75 are sufficiently open when they intercept the teeth 10 of the comb 4.
According to one embodiment, the ejector member 2 is configured to be able to incline by a predefined number of distinct orientations allowing different thicknesses of board
The comb 4 comprises a plurality of teeth 10, ten in this example (figures 3 and 4). The teeth 10 have substantially identical dimensions and are evenly spaced so as to allow the passage of the grippers of the gripper bars 75 in the spaces interposed between the teeth 10. The number and position of the teeth 10 may vary according to the type of gripper bar used.
The comb 4 is for example formed of two separate materials, for example superposed in plies, as visible in figure 5. The teeth 10 comprise for example a plastic material 4a at the lower part, making it possible to limit the noise of impact and a metallic material 4b in the upper part, providing good mechanical strength.
The supports 5 are configured to collaborate with a respective side plate borne by the base 3 to fix the base 3 with modifiable inclination with respect to the supports 5 (figure 2). The inclination of the comb 4 may thus be oriented according to the thickness of the waste sheet, something which makes it possible to ensure that the grippers of the gripper bar 75 are sufficiently open when they intercept the teeth 10 of the comb 4.
According to one embodiment, the ejector member 2 is configured to be able to incline by a predefined number of distinct orientations allowing different thicknesses of board
- 12 -to pass. Figure 2 thus illustrates an example for three angular positions that an ejector member 2 can adopt according to the thickness of the sheet waste.
The comb 4 is also configured to be able to adopt a low-throughput first position (figure 4) and at least one high-throughput second position (figure 3).
In the low-throughput first position the comb 4 extends for example in a une in the transverse direction T
perpendicular to the longitudinal direction of travel of the sheet-form elements D. The comb 4 in the low-throughput first position thus has, for example, a straight line or substantially straight-line overall shape that complements that of the gripper bar 75 for a machine 1 operating at low throughput, for example for a machine throughput below a predetermined throughput threshold, such as of the order of 000 sheets/hour (s/h).
In the high-throughput second position, the shape of the comb 4 is pulled back into a concave shape, the center of the comb 4 being set back in relation to its lateral ends in the longitudinal direction of travel of the sheet-form elements D. In this high-throughput second position, the center of the comb 4 is set back further than in the low-throughput first position.
The center of the comb 4 is set back by a distance d for example of between 1 and 5 millimeters, such as of the order of 3 mm, with respect to the low-throughput first
The comb 4 is also configured to be able to adopt a low-throughput first position (figure 4) and at least one high-throughput second position (figure 3).
In the low-throughput first position the comb 4 extends for example in a une in the transverse direction T
perpendicular to the longitudinal direction of travel of the sheet-form elements D. The comb 4 in the low-throughput first position thus has, for example, a straight line or substantially straight-line overall shape that complements that of the gripper bar 75 for a machine 1 operating at low throughput, for example for a machine throughput below a predetermined throughput threshold, such as of the order of 000 sheets/hour (s/h).
In the high-throughput second position, the shape of the comb 4 is pulled back into a concave shape, the center of the comb 4 being set back in relation to its lateral ends in the longitudinal direction of travel of the sheet-form elements D. In this high-throughput second position, the center of the comb 4 is set back further than in the low-throughput first position.
The center of the comb 4 is set back by a distance d for example of between 1 and 5 millimeters, such as of the order of 3 mm, with respect to the low-throughput first
- 13 -position. The curvature of the comb 4 in the pulled-back position has a shape that approximates to the curvature of the gripper bar 75 in movement for a machine 1 operating at a high throughput, namely for a machine throughput above the predetermined throughput threshold.
The position of the comb 4 in the high-throughput second position when the gripper bar 75 is deformed or in the low-throughput first position when the gripper bar 75 is straight, makes it possible to adapt the curvature of the comb 4 to suit the machine throughput so that when the gripper bar 75 and the comb 4 intercept each other, the shape of the comb 4 best matches the curvature of the moving gripper bar 75. The grippers can therefore pass between the teeth 10 of the comb 4 which strikes the sheet waste as well in the center of the gripper bar 75 as at the ends thereof without the risk of collisions.
The comb 4 may be configured to adopt a low-throughput first position and a single high-throughput second position.
It is also conceivable for the comb 4 to be able to adopt several high-throughput second positions with a concavity accentuated to greater or lesser extents according to the machine throughput in order to best match the shape of the gripper bar 75, which shape is itself dependent on the machine throughput.
In the high-throughput second position, the overall shape of the comb 4, which is concave, may be formed by at
The position of the comb 4 in the high-throughput second position when the gripper bar 75 is deformed or in the low-throughput first position when the gripper bar 75 is straight, makes it possible to adapt the curvature of the comb 4 to suit the machine throughput so that when the gripper bar 75 and the comb 4 intercept each other, the shape of the comb 4 best matches the curvature of the moving gripper bar 75. The grippers can therefore pass between the teeth 10 of the comb 4 which strikes the sheet waste as well in the center of the gripper bar 75 as at the ends thereof without the risk of collisions.
The comb 4 may be configured to adopt a low-throughput first position and a single high-throughput second position.
It is also conceivable for the comb 4 to be able to adopt several high-throughput second positions with a concavity accentuated to greater or lesser extents according to the machine throughput in order to best match the shape of the gripper bar 75, which shape is itself dependent on the machine throughput.
In the high-throughput second position, the overall shape of the comb 4, which is concave, may be formed by at
- 14 -least two straight-line portions 9a, 9b connected by their ends, the angle between two adjacent straight-line portions 9a, 9b being less thon 1800 .
The concave overall shape of the comb 4 may thus be formed by two straight-line portions 9a, 9b placed end to end, the overall shape of the comb 4 being able to be inscribed inside a triangle as can be seen in figure 3. The triangle inside which the overall shape of the comb 4 can be inscribed is thus formed by the two straight-line portions 9a, 9b joined together at the lateral ends of the comb 4 by a transverse straight une. This shape is particularly simple to achieve.
The comb 4 for example comprises at least two rigid straight-line portions 9a, 9b which can also move relative to one another. The straight-line portions 9a, 9b are joined together and to the base 3 by of least three connections produced for example using articulations or deformable zones of the comb 4 or by using at least one articulation and at least one deformable zone.
The comb 4 for example comprises at least one deformable zone 12a, 12b for joining the straight-line portions 9a, 9b together and/or to the base 3. A deformable zone 12a, 12b may be created through a zone of weakness formed by thinning and/or at least one orifice 15. Other embodiments for the deformable zones are conceivable, for example the insertion of flexible materials.
The concave overall shape of the comb 4 may thus be formed by two straight-line portions 9a, 9b placed end to end, the overall shape of the comb 4 being able to be inscribed inside a triangle as can be seen in figure 3. The triangle inside which the overall shape of the comb 4 can be inscribed is thus formed by the two straight-line portions 9a, 9b joined together at the lateral ends of the comb 4 by a transverse straight une. This shape is particularly simple to achieve.
The comb 4 for example comprises at least two rigid straight-line portions 9a, 9b which can also move relative to one another. The straight-line portions 9a, 9b are joined together and to the base 3 by of least three connections produced for example using articulations or deformable zones of the comb 4 or by using at least one articulation and at least one deformable zone.
The comb 4 for example comprises at least one deformable zone 12a, 12b for joining the straight-line portions 9a, 9b together and/or to the base 3. A deformable zone 12a, 12b may be created through a zone of weakness formed by thinning and/or at least one orifice 15. Other embodiments for the deformable zones are conceivable, for example the insertion of flexible materials.
- 15 -The comb 4 may comprise at least one articulation for connecting the straight-line portions 9a, 9b together and/or to the base 3, such as an articulation of the link rod, pivot link, hinge, slide rail or other type (flot depicted).
According to one exemplary embodiment, the comb 4 comprises at least two straight-line portions 9a, 9b joined together and to the base 3 by at least three deformable zones 12a, 12h. Two straight-line portions 9a, 9b are, for example, ioined together at the middle of the comb 4. Each straight-line portion 9a, 9b thus has the same number of teeth 10.
The deformable zones 12b connecting the base 3 to the lateral ends of the comb 4 may be formed by a perforated respective wall (figure 5). These deformable zones 12b also react the load generated by the impact of the waste sheet.
The deformable zone 12a situated in a central position between the straight-line portions 9a, 9b is, for example, formed by a perforated wall of small thickness, of the order of a few millimeters.
Recause of the very small angular deformation of the walls of the deformable zones 12a, 12b of the comb 4, of the order of 0.5 degrees, a comb 4 exhibiting a deformable structure made of zones of weakness is advantageous because it is very simple to create, is inexpensive, exhibits a low number of component parts, has no pivot point wear and is free of play.
It may thus be envisioned for the comb 4 to have a
According to one exemplary embodiment, the comb 4 comprises at least two straight-line portions 9a, 9b joined together and to the base 3 by at least three deformable zones 12a, 12h. Two straight-line portions 9a, 9b are, for example, ioined together at the middle of the comb 4. Each straight-line portion 9a, 9b thus has the same number of teeth 10.
The deformable zones 12b connecting the base 3 to the lateral ends of the comb 4 may be formed by a perforated respective wall (figure 5). These deformable zones 12b also react the load generated by the impact of the waste sheet.
The deformable zone 12a situated in a central position between the straight-line portions 9a, 9b is, for example, formed by a perforated wall of small thickness, of the order of a few millimeters.
Recause of the very small angular deformation of the walls of the deformable zones 12a, 12b of the comb 4, of the order of 0.5 degrees, a comb 4 exhibiting a deformable structure made of zones of weakness is advantageous because it is very simple to create, is inexpensive, exhibits a low number of component parts, has no pivot point wear and is free of play.
It may thus be envisioned for the comb 4 to have a
- 16 -higher number of deformable zones or articulations arranged in such a way that, in the high-throughput second position, the comb 4 exhibits a more curved concave shape best conforming to the deformed shape of the gripper bar 75.
The overall shape of the comb 4 in the high-throughput second position may thus for example comprise more than two straight-line portions 9a, 9b connected by their ends, such as three straight-line portions which can be inscribed in a trapezoidal overall shape. The trapezoidal outline inside which the overall shape of the comb 4 can be inscribed is thus formed by three straight-line portions placed end to end and connected to the lateral ends of the comb 4 by a transverse straight une.
The comb 4 is, for example, configured to adopt a high-throughput second position at rest. Force then needs to be exerted on the comb 4 in order to cause it to adopt the low-throughput first position. Defaulting to the high-throughput second position makes it possible to ensure that waste from sheets can be ejected at high throughput even in the event of a problem, such as in the event of a power cut or the like.
The ejector member 2 comprises for example at least one actuating mechanism configured to cause the comb 4 to adopt the low-throughput first position or the high-throughput second position by deforming the comb 4 or by moving at least one straight-line portion 9a, 9b of the comb.
The actuating mechanism is for example configured to
The overall shape of the comb 4 in the high-throughput second position may thus for example comprise more than two straight-line portions 9a, 9b connected by their ends, such as three straight-line portions which can be inscribed in a trapezoidal overall shape. The trapezoidal outline inside which the overall shape of the comb 4 can be inscribed is thus formed by three straight-line portions placed end to end and connected to the lateral ends of the comb 4 by a transverse straight une.
The comb 4 is, for example, configured to adopt a high-throughput second position at rest. Force then needs to be exerted on the comb 4 in order to cause it to adopt the low-throughput first position. Defaulting to the high-throughput second position makes it possible to ensure that waste from sheets can be ejected at high throughput even in the event of a problem, such as in the event of a power cut or the like.
The ejector member 2 comprises for example at least one actuating mechanism configured to cause the comb 4 to adopt the low-throughput first position or the high-throughput second position by deforming the comb 4 or by moving at least one straight-line portion 9a, 9b of the comb.
The actuating mechanism is for example configured to
- 17 -push longitudinally on a deformable central zone 12a of the comb 4 in order to straighten it iota the low-throughput first position. This also makes it possible to react vertical loads and ensure the lateral positioning of the comb 4.
According to one exemplary embodiment, the actuating mechanism comprises at least one actuator 13, such as a pneumatic cylinder. The mobile end of the actuator 13 is fixed to the deformable central zone 12a for example by screws arranged between two zones of weakness. Pneumatic operation of the cylinder pushes the wall of the deformable zone 12a back longitudinally to straighten the comb 4 into the low-throughput first position.
The actuator 13 is carried on board the device; it is for example housed and fixed in the base 3.
In instances in which the comb 4 exhibits more than two straight-line portions 9a, 9b, the ejector member 2 may comprise several actuators 13. Alternatively, the actuator 13 may be configured to deform several deformable zones 12a, 12b at a time, or to move several straight-line portions 9a, 9b at a time.
According to another example which has not been depicted, the actuating mechanism comprises a transmission device that can be actuated manually by an operator, such as a device involving fork, linkages and/or chains or belts, to offset actuation to a zone accessible to the operator, which can be actuated between two, low-throughput and high-
According to one exemplary embodiment, the actuating mechanism comprises at least one actuator 13, such as a pneumatic cylinder. The mobile end of the actuator 13 is fixed to the deformable central zone 12a for example by screws arranged between two zones of weakness. Pneumatic operation of the cylinder pushes the wall of the deformable zone 12a back longitudinally to straighten the comb 4 into the low-throughput first position.
The actuator 13 is carried on board the device; it is for example housed and fixed in the base 3.
In instances in which the comb 4 exhibits more than two straight-line portions 9a, 9b, the ejector member 2 may comprise several actuators 13. Alternatively, the actuator 13 may be configured to deform several deformable zones 12a, 12b at a time, or to move several straight-line portions 9a, 9b at a time.
According to another example which has not been depicted, the actuating mechanism comprises a transmission device that can be actuated manually by an operator, such as a device involving fork, linkages and/or chains or belts, to offset actuation to a zone accessible to the operator, which can be actuated between two, low-throughput and high-
- 18 -throughput, positions, for example by means of a lever or of a handwheel.
In operation, the path of the gripper bar 75 is synchronized with its opening in the waste discharge station 600 so that as the gripper bar 75 ascends the bend of the loop of the chainsets 80, the grippers open as they intercept the ejector member 2. The waste is carried by the gripper bar 75, and is released before the striking of the comb 4 with the teeth 10 passing between the grippers of the gripper bar 75 so that it pivots onto the discharge belt.
Ejection "on the fly" uses the about-turn path of the gripper bar 75 in the waste discharge station 600 to cause the cut sheet to pivot onto the discharge belt, thus making a saving on one gripper bar. This method of discharging waste on the fly can work just as well at low as at high throughput because the curvature of the comb 4 can be modified to suit the machine throughput by causing it to adopt a low-throughput first position or at least one high-throughput second position.
In operation, the path of the gripper bar 75 is synchronized with its opening in the waste discharge station 600 so that as the gripper bar 75 ascends the bend of the loop of the chainsets 80, the grippers open as they intercept the ejector member 2. The waste is carried by the gripper bar 75, and is released before the striking of the comb 4 with the teeth 10 passing between the grippers of the gripper bar 75 so that it pivots onto the discharge belt.
Ejection "on the fly" uses the about-turn path of the gripper bar 75 in the waste discharge station 600 to cause the cut sheet to pivot onto the discharge belt, thus making a saving on one gripper bar. This method of discharging waste on the fly can work just as well at low as at high throughput because the curvature of the comb 4 can be modified to suit the machine throughput by causing it to adopt a low-throughput first position or at least one high-throughput second position.
Claims (15)
1. An ejector member for removing waste on the fly from sheets in a machine for processing sheet-form elements, the ejector member comprising a comb, the comb comprising a plurality of teeth, the comb is moveable between a low-throughput first position and at least one high-throughput second position, a center of the comb being set back with respect to lateral ends of the comb in the high-throughput second position, the center of the comb being set back further in the high-throughput second position than in the low-throughput first position.
2. The ejector member according to claim 1, wherein, in the low-throughput first position, an overall shape of the comb is a straight line.
3. The ejector member according to any one of claims 1 and 2, wherein, in the high-throughput second position, the overall shape of the comb which is concave is formed by at least two straight-line portions connected by their ends, an angle between two adjacent straight-line portions being less than 180°.
4. The ejector member according to any one of claims 1-3, wherein, in the high-throughput second position, the overall shape of the comb is triangular.
5. The ejector member according to any one of claims 1-4, wherein, in the high-throughput second position, the center of the comb is set back by a distance of between 1 and millimeters with respect to the position of the center of the comb in the low-throughput first position.
6. The ejector member according to any one of claims 1-5, wherein the comb comprises at least one deformable zone.
7. The ejector member according to claim 6, wherein the deformable zone is formed by an area of thinner material thickness than a surrounding area of the comb and/or at least one orifice.
8. The ejector member according to any one of claims 1-7, wherein the comb comprises at least one articulation.
9. The ejector member according to any one of claims 1-8, wherein the comb comprises at least two straight-line portions joined together and moveable relative to one another.
10. The ejector member according to claim 9, wherein the ejector member comprises two straight-line portions joined together in the middle of the comb.
11. The ejector member according to any one of claims 9 and 10, wherein the at least two straight-line portions are joined together and joined to a base of the ejector member by at least three deformable zones of the comb.
12. The ejector member according to any one of claims 1-11, wherein, at rest, the comb is in the high-throughput second position.
13. The ejector member according to any one of claims 1-12, wherein the ejector member comprises an actuating mechanism configured to cause the comb to adopt the low-throughput first position or a high-throughput second position.
14. The ejector member according to any one of claims 1-13, wherein the ejector member comprises two supports configured to be fixed to a respective chainset guide device of the machine, supports collaborating with a respective side plate borne by a base of the ejector member which is connected to the comb in order to fix the base to the supports with an inclination that is changeable in relation to the supports.
15. A machine for processing sheet-form elements, comprising the ejector member according to any one of claims 1-14, arranged on a chain guide device of a transport device of the processing machine downstream of a copies-receiving station of the processing machine.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16020072.1 | 2016-03-09 | ||
| EP16020072 | 2016-03-09 | ||
| PCT/EP2017/025045 WO2017153056A1 (fr) | 2016-03-09 | 2017-03-09 | Organe ejecteur et machine de traitement d'elements en forme de feuilles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA3016244A1 CA3016244A1 (fr) | 2017-09-14 |
| CA3016244C true CA3016244C (fr) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3016244A Active CA3016244C (fr) | 2016-03-09 | 2017-03-09 | Ejector member and machine for processing sheet-form elements |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US11007662B2 (fr) |
| EP (1) | EP3426449B1 (fr) |
| JP (1) | JP6759353B2 (fr) |
| KR (1) | KR102157946B1 (fr) |
| CN (1) | CN109070379B (fr) |
| AU (1) | AU2017230513B2 (fr) |
| BR (1) | BR112018067388B1 (fr) |
| CA (1) | CA3016244C (fr) |
| ES (1) | ES2778831T3 (fr) |
| PL (1) | PL3426449T3 (fr) |
| RU (1) | RU2694303C1 (fr) |
| WO (1) | WO2017153056A1 (fr) |
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| TWI804078B (zh) * | 2020-12-17 | 2023-06-01 | 瑞士商巴柏斯特麥克斯合資公司 | 片材加工機 |
| TWI796025B (zh) * | 2020-12-17 | 2023-03-11 | 瑞士商巴柏斯特麥克斯合資公司 | 片材加工機 |
| US20220356031A1 (en) * | 2021-05-04 | 2022-11-10 | A. G. Stacker Inc. | Front end conveyor having blower for dislodging scrap |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2126214A (en) * | 1938-01-06 | 1938-08-09 | American Hard Rubber Co | Comb |
| FR1090857A (fr) * | 1952-11-20 | 1955-04-05 | Bobst Fils Sa J | Procédé d'éjection et de réglage d'un appareil éjecteur de déchets de feuillesde papier découpées et appareil éjecteur et son accessoire pour la mise en oeuvredudit procédé |
| US4231272A (en) * | 1978-10-10 | 1980-11-04 | Beloit Corporation | Trim chute and method |
| SU820979A1 (ru) * | 1979-05-17 | 1981-04-15 | Проектно-Конструкторский И Технологи-Ческий Институт Министерства Abtomo-Бильной Промышленности Cccp | Штамп дл вырубки деталей из полосо-ВОгО и лЕНТОчНОгО МАТЕРиАлА |
| CH670619A5 (fr) * | 1986-04-29 | 1989-06-30 | Sft Ag Spontanfoerdertechnik | |
| SU1475818A1 (ru) * | 1987-04-30 | 1989-04-30 | Производственное Объединение "Сигнал" | Устройство дл удалени отходов кро картонных изделий |
| CH681885A5 (fr) | 1990-03-24 | 1993-06-15 | Bobst Sa | |
| CH681873A5 (fr) * | 1990-04-09 | 1993-06-15 | Bobst Sa | |
| DE4201411A1 (de) * | 1992-01-21 | 1993-07-22 | Blohm Voss Ag | Niederhalter an behandlungsanlagen, insbesondere stanzmaschinen, fuer duenne flache gegenstaende, insbesondere boegen aus papier |
| CH690098A5 (fr) | 1994-05-04 | 2000-04-28 | Bobst Sa | Barre de pinces comportant un dispositif d'attache à un train de chaînes au sein d'une machine de traitement d'éléments en plaque. |
| CH689974A5 (fr) * | 1994-05-13 | 2000-02-29 | Bobst Sa | Station d'éjection de déchets dans une machine de découpe d'éléments en plaque. |
| CH689976A5 (fr) | 1994-05-24 | 2000-02-29 | Bobst Sa | Dispositif de commande de la prise d'un élément en plaque par des pinces au sein d'une machine de traitement de tels éléments. |
| CH693169A5 (fr) * | 1999-06-01 | 2003-03-27 | Bobst Sa | Dispositif pour régler la position entre un éjecteur de déchets et un cylindre de découpage. |
| US6427633B1 (en) * | 2000-11-10 | 2002-08-06 | Patsy Ogden | Pet brush with hair removal feature |
| US7789094B2 (en) * | 2002-03-05 | 2010-09-07 | L'oreal S.A. | Device for combing and/or brushing eyelashes and/or eyebrows, and/or for applying makeup thereto |
| EP1524221B1 (fr) * | 2003-10-14 | 2006-07-19 | Bobst S.A. | Station de séparation des poses d'une presse à découper |
| CN100349739C (zh) * | 2004-05-05 | 2007-11-21 | 鲍勃斯脱股份有限公司 | 在印压机上相继地运输纸张的装置 |
| US20050274247A1 (en) * | 2004-06-14 | 2005-12-15 | Sean Talkington | Stripper apparatus and methods for rotary dies |
| TWI261025B (en) | 2004-09-27 | 2006-09-01 | Bobst Sa | Assembly device of plate elements for a processing machine |
| DE102006027124A1 (de) * | 2006-06-12 | 2007-12-13 | Heidelberger Druckmaschinen Ag | Abfallgebläse für eine Bogenstanz- und Prägemaschine |
| CA2768784C (fr) * | 2009-07-24 | 2015-06-16 | Bobst Sa | Dispositif et procede de positionnement d'elements en plaque dans une machine de traitement |
| US9061845B2 (en) * | 2010-09-22 | 2015-06-23 | Bobst Mex Sa | Machine for processing elements in sheet form, comprising a chainset tensioner |
| KR101547739B1 (ko) * | 2010-11-19 | 2015-08-26 | 봅스트 맥스 에스에이 | 포장체 제조기 내의 폐기물 배출용 유닛을 위한 장치 |
| WO2014135276A1 (fr) * | 2013-03-08 | 2014-09-12 | Bobst Mex Sa | Agencement de découpe et d'éjection des déchets, cassette, unité et machine ainsi équipée |
| CN104441051B (zh) * | 2013-09-25 | 2017-04-12 | 天津长荣印刷设备股份有限公司 | 具有抓取边缘刮擦器的模切机 |
-
2017
- 2017-03-09 AU AU2017230513A patent/AU2017230513B2/en active Active
- 2017-03-09 RU RU2018135291A patent/RU2694303C1/ru active
- 2017-03-09 WO PCT/EP2017/025045 patent/WO2017153056A1/fr not_active Ceased
- 2017-03-09 BR BR112018067388-9A patent/BR112018067388B1/pt active IP Right Grant
- 2017-03-09 EP EP17708975.2A patent/EP3426449B1/fr active Active
- 2017-03-09 JP JP2018547300A patent/JP6759353B2/ja active Active
- 2017-03-09 ES ES17708975T patent/ES2778831T3/es active Active
- 2017-03-09 PL PL17708975T patent/PL3426449T3/pl unknown
- 2017-03-09 KR KR1020187028040A patent/KR102157946B1/ko active Active
- 2017-03-09 CN CN201780028517.3A patent/CN109070379B/zh active Active
- 2017-03-09 CA CA3016244A patent/CA3016244C/fr active Active
- 2017-03-09 US US16/083,285 patent/US11007662B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US11007662B2 (en) | 2021-05-18 |
| RU2694303C1 (ru) | 2019-07-11 |
| EP3426449A1 (fr) | 2019-01-16 |
| JP6759353B2 (ja) | 2020-09-23 |
| AU2017230513B2 (en) | 2019-11-21 |
| US20190009422A1 (en) | 2019-01-10 |
| CA3016244A1 (fr) | 2017-09-14 |
| PL3426449T3 (pl) | 2020-06-01 |
| EP3426449B1 (fr) | 2020-02-12 |
| KR20180120212A (ko) | 2018-11-05 |
| BR112018067388B1 (pt) | 2024-02-27 |
| AU2017230513A1 (en) | 2018-09-27 |
| CN109070379A (zh) | 2018-12-21 |
| ES2778831T3 (es) | 2020-08-12 |
| JP2019510649A (ja) | 2019-04-18 |
| BR112018067388A2 (pt) | 2019-01-02 |
| WO2017153056A1 (fr) | 2017-09-14 |
| KR102157946B1 (ko) | 2020-09-21 |
| CN109070379B (zh) | 2020-08-25 |
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