CA2163910A1 - Folder apparatus with product seizing device - Google Patents
Folder apparatus with product seizing deviceInfo
- Publication number
- CA2163910A1 CA2163910A1 CA 2163910 CA2163910A CA2163910A1 CA 2163910 A1 CA2163910 A1 CA 2163910A1 CA 2163910 CA2163910 CA 2163910 CA 2163910 A CA2163910 A CA 2163910A CA 2163910 A1 CA2163910 A1 CA 2163910A1
- Authority
- CA
- Canada
- Prior art keywords
- cylinder
- product
- folding
- seizing device
- folder apparatus
- 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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/16—Rotary folders
- B65H45/162—Rotary folders with folding jaw cylinders
- B65H45/167—Rotary folders with folding jaw cylinders having associated sheet guide means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/44—Moving, forwarding, guiding material
Landscapes
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
A folder apparatus is provided which includes a first cylinder, having at least a set of first conveyer tapes assigned to its circumference A folding cylinder (14) has a product seizing device (15) assigned thereto which is moved at a product conveying velocity. The product seizing device (15) cooperates with a surface section (25) of the first cylinder (8) during product transfer.
Description
2 ~ 1649/42 Folder Apparatus with Product Seizirg Device F~eld of the Invention The present lnvention relates to a folder apparatu8 with 5 a product seizing device and at least two product collecting cylinders.
Backqround of the Invention U.S. Patent No. 4,279,410 purports to disclose a folder for a web-fed rotary printing press. Ill this device, two 10 take- over cylinders are assigned to the circumference of a pin collecting cylinder. Tape guides are assigned to the region in the pin collecting cylinder which the ~^~
folded products are being taken from without reaching into the nip between the pin ~nll~t;ng cylinder arLd the 15 take over cylinder. As a result, a whipping of the folded products trailing edges may occur. Moreover, such a configuration often causes "dog ears~ within the edge regions of the folded products.
U.S. Patent No. 4,490,132 purports to show a paper 20 folding machine for use in rotary presses. In accordance with this device, a set of product quiding tapes is assigned to a section of the overlapping drum' s circumf erence . A gripping drum and a delivery drum are assigned to the circumference of the overlapping drum 25 without any devices for smoothing the exchange of the folded products in the nips between the corresponding product r~n~ t; n~ cylinders .
-U.S. Patent No. 4,381,106 purports to show a collect 3~1D
cylinder for a rotary folder. A series of tapes is wound around appr~ P~y half of the collecting cylinder~ s circumfererce. The series of tapes does not, however, reach the exchange region of the folded products, i.e.
5 the nip between j aw cylinder and collect cylinder.
U.S. Patent No. 4,521,007 purports to disclose braking brushes and folding apparatuses of rotary printing ~--h; n~q . A folding knife cylinder cooperates with a nip and tuck cylinder. A series of braking brushes is lO mounted on a pivotable lever. ~3y means of these braking brushes, sections of folded products are pressed to a greater or lesser extent onto the circumference of the folding knife cylinder. However, the braking brushe8 are fixedly mounted and do not reach into the ~x~ y~ region 15 itself.
DE 35 34 15Z Al discloses a folder apparatus. Folded products are ~ Iv~ d from a knife cylinder to a jaw cylinder After the folded products are taken from the circumference of the jaw cylinder, they are delivered by 20 a plurality of tape asu~ q to fan wheels. A
deceleration unit is assigned to the circumference of the jaw cylinder to slow down the folded products before they enter the conveying arrangements to the f an wheels .
Attempts have been made to increase folding accuracy by 25 applying foam pads or rubber pads on the collect cylinders circumference in order to press the product to be folded against the jaw cylinder. ~owever, these conf igurations have the disadvantage these pads must be fre~uently replaced due to wear and tear. Furt~ ~, 30 this configuration results in the products being marked when pressed against the jaw cylinder surface.
of the Invention I~ a~coL~LIl~e with the present invention a ~older --- ~lB~91 ~
apparatus is provided which includes a f irst cylinder having at least a set of first cu-lvey-~- tapeg assigned to its circumference and a olding cylinder having an ~sori ~t~l product seizing device . The product seizing S device is cooperatively engaged with a 8urfacê section of the first cylinder during product transfer. II~ V~:L~
the product seizing device moves at apprnYir~tply thê
same velocity of the product being cu--v~:y~d~
In accordance with the present invention, folded product3 10 which are being ~ y~d on the circumference of the first cylinder are seized by the product seizing device at a point prior to a fold-off area (i.e. the area where the folded products pass from the first cylinder to the folding cylinder) As a result, the folded product3 lS remain secured during their exchange from the fir3t cylinder~s CiL~:ull~Lt:Lt:~lce to the folding cylinder~s circumference For example, the trailing edges of the products to be tucked into the jaw3 on the folding (or jaw) cylinder are prevented from whipping 20 In accordance with an c ' 'il t of the present invention, the product seizing device includes one or more belts which are wrapped around the circumference of folding cylinder and which contacts and extends over an arc-length of the circumference of the first (e.g.
25 transfer or collect) cylinder. In this manner, the folded product and its trailing edge is kept under control during the exchange from the first cylinder to the folding cylinder, not merely for a short instant, but rather within an arc-length region PY~n~l;n~ over the 30 length of the folded product, thereby preventing dog ear3 or other damage to the folded product.
Moreover, the fact that the product seizing device i8 moved apprnYi r~tf~l y at the product conveying velocity prevents damage to the product which might otherwi3e . . .
.
- 21~39~
result from a si~n;fif~nt speed differential betwee~ the folded product and the product seizing device.
In accordance with a further ~ i of the present ir,vention, the surface section of the first cylinder 5 which is r~nt~ctefi by the product seizing device i8 located in front of the fold-off area (i.e. the ~ Jc area). The fold-off area extends from the nip between the first (co~ t;n~) and folding cylinders up to an end of a guiding device of the first cylinder. Moreover, the 10 surface section extends from a turning element to the nip between the two cooperating cylinders. The belt resides in grooves within the surface of the folding cylinder and is further wrapped around the turning element (e.g. a tape roller) such that the belt ~nt~ctC the surface lS section of the f irst cylinder .
Brief Description of the Drawinc~s - Fig. 1 shows a side view of a folder apparatus according to the present invention having a product seizing device ~`~
located in front of the fold-off area;
20 Fig. 2 shows a prior art folder including a stationary mounted braking brush;
Fig. 3a shows the arc shaped entering section of Fig. 1 in greater detail;
Fig. 3b shows the a cross-section of the folding cylinder 2S of Figs. 1 and 3a;
Fig. 3c shows a portion of Fig. 3a in mor- detail; and Fig 4 shows a pin-type folder in accordance with another embodiment of the present invention.
Detailed Descri~tion of the Invention ,, .
~3~1~
Fig 1 shows a side view of a folder apparatus 1 in accul dd~lC-: with the present invention which i9 mounted with delivery module 27. After printed products have been cut from a web of material by a pair of cutting 5 cylinders 2 they enter between a set of first oUUV~y~:L
tapes 4 and a set of second ~ullV~y-JL tapes 5. The products are transported to a product seizing area 11 via the conveyor tapes 4, 5. At the product seizing area 11, the folded productg are _~7.,uLuLCd by ~rjr~;n~ ~1 q lO (not shown) on the circumference of a collect cylinder 8.
It should be understood that while figure 1 illustrates a collect cylinder, the present invention i8 not limited to use with collect cylinders. For example, the cylinder 8 could also be a transfer cylinder.
15 The set of first conveyor tapes 4 extends downwardly past the product seizing area 11 and partially around the circumference of the collect cylinder 8. Referring to the bottom of Fig. 1, the first set of ~UllV~yuL tapes 4 -are further klound around tape turn rollers 18 and guided 20 via a nur.ber of rollers 10. To r-int~;n a pret~nqir~nPd state within the first and second conveyor tapes 4, 5, each set of tapes includes a tensioning means 6. As ~oon as the ~olded products emerge from the nip between the cutting cylinders 2, they pass S-wrap rollers 7, being 25 located in the path of the ~:~llV~::yUL tapes 4, 5 between the cutting cylinders 2 and a second pair of accelerator cylinders 3 Assigned to the circumference of the collect cylinder 8 is a guiding device 9, comprising a first guiding section 30 9.1 and a second guiding section 9.2. The second guiding section 9.2 establishes an upper end of a fold-off area 12 in which folded products are exchanged between the circumference of the collect cylinder 8 and a jaw (or folding) cylinder 14.
2~`63910 .
After the product-exchange in the fold-off region 12 is accomplished, the products tucked into folding jaws 20 on the circumference of the jaw cylinder 14, now being folded products are conveyed by third conveying tapes 16 5 which are wound partially around the ~aw cylinder 14.
By means of the set of third conveying tape9 16 and a set of fourth conveying tapes 17 the folded products enter the delivery module 27 and are tL~ UL Led to a product delivery 28.
0 Referring to Fig 2, on convl~ntinn~l folders, a stationary braking brush 13 i9 mounted beneath the fold-of f area 12 to keep the f olded products on the circumference of the collect cylinder 8 during l~ J~.
Since this braking brush 13 does not reach into the fold-15 off area 12, its perfnrr~n~~e in providing control of thefolded products, particularly the trailing edges, i8 rather limited.
Referring again to Fig. 1, an improved folder design in accordance with the present invention includes a product 20 seizing device 15 in place of the brush assembly 18. The product seizing device 15 contacts the circumference of the collect cylinder 8 over the length of an entering section 25 Thus, the products on the circumference of the collect cylinder 8 which are supported by the first 25 conveyor tapes 4 are seized by the product seizing device lS and thereby held against the circumference of the collect cylinder 8 until they are transferred to the jaw cylinder 14 in the fold-off area 12.
As a result, the products to be tucked into the folding 30 jaws 20 of the jaw cylinder 14 are guided and controlled throughout the fold-off area 12. IIOL~:~1V~L~ even the products critical tr~; 1 ;ns edge is firmly held against the circumf erence of the collect cylinder 8 by the .
2i~
* 7 product seizing device. Since the products trailing edge is now being seized during fold-off, a whipping n-~v~
of the trailing edge i5 Pl ;minAt~d and dog-ears no longer are likely to occur. Since the product seizing device 15, which is wound around the circumference of the jaw cylinder 14, is moved with approximately the same speed as the folded product; no significant speed differentia exists between products to be conveyed and the product seizing device 15.
As a result, a smooth product transfer is provided with reduced mechanical stress exerted on the folded products.
This facilitates hAn~l i ng of products being very thin, cut from a web of light-weight material for example.
Fig. 3a shows the entering 8ection 25 of Fig. l in greater detail. The product seizing device 15 emerge8 from grooves l9 on the circumference of the jaw cylinder 14. The grooves l9 extend over the surface of ~aw cylinder 14, the grooves 19 being axially spaced from one another Referring to Fig. 3b, in accordance with this embodiment of the present invention, the product seizing device 15 includes a plurality of belts 15.1, each belt residing in a corresponding groove l9.1 on the surface 20 of the jaw cylinder 14. The shape of the belts 15.1 could, for example, be cylindrical or rectangular.
2S Referring again to Fig. 3a, the product seizing device 15 is guided, via a tape roller 24, to contact the circumference of the collect cylinder 8. As a re8ult, the product seizing device lS is partly stripped away from the surface 26 of the ~aw cylinder 14. As shown in Fig. 3a, the tape roller 24 is positioned such that the product seizing device contacts the surface of the collect cylinder 8 over the entire circumference of the arc-shaped entering section 25. As a result, the folded products to be conveyed on the collect cylinder are 8 ~16~91D
substantially controlled tl~Ju~l~JuL the transfer proces~
to the jaw cylinder 14. In addition, instead of using a single tape roller 24, single tape rolls ~R~;r"P~ to each of the belts 15.1 may also be used.
5 By means of tucking Pl ~ (not shown) the products being held on the circumference of the collect cylinder 8, are tucked into folding jaws 20. The jaws 20 include a f ixedly and a movably mounted j aw segment 4 0 . The moveable j aw segment is actuated by a lever 21 having a 10 roller 22 driven by the outer contour of an Rrtl~t1nq cam 23 . The actuating cam 23 is schematically; n~l; r~ted by dashed lines in Fig. 3a. As st~ti~n~ry braking brushes, do not reach into the fold-off area 12, an P~r~ Pnt control of the products during cylinder exchange can be 15 accomplished.
The transfer of folded products to the jaw cylinder 14 is shown in greater detail in Fig. 3c. As P~;nP~
above,the belts 15.1 reside in grooves 19.1 which are submerged below the surface 26 of the jaw cylinder 14.
20 The jaw segment 40 includes a jaw blade holder 50 having jaw blades 55 attached thereto. The jaw blade holder 50 and jaw blades 55 are segmented so as to allow the belts 15.1 to drop below the product gripping area 91. In this manner, the belts 15.1 do not interfere with the jaw 25 blades 55 as they capture the folded product 90.
Fig. 4 shows the an embodiment of the present invention applied to a pin type folder apparatus. A draw-in roller pair 29 forwards a web 30 between a cutting cylinder 31 and a folding pin/tuck cylinder 33. The web 30 is cut by 30 knives 32 fixed on the circumference of the cutting cylinder 31. The knives 32 cooperate with groove bars on the circumference of the folding pin/tuck cylinder 33.
The signatures are being fixed onto the circumference with the cutting cylinder 31 by mean3 of pins 34. Before 9 2~391D
they reach the fold-off area 12, they are being seized by the product seizing device 15 on the circumference of the folding knife cylinder 33. The pins 33 are retracted before the signatures are tucked into folding jaws 38.
5 The Eign~tl~res are tucked into folding jaws 38 by tucker blades 35. Aa can be seen in Fig. 4 the cylinders 33, 37 are partly coYered by guiding device 36, which extends toward the nip between folding knife cylinder 33 and ~aw cylinder 37. On the circumference of the jaw cylinder 10 37, tangentially P~rtPn~iin~ grooves 19 are located for receiving the product seizing device 15. The product seizing device 15, which is wrapped around the circumference of the jaw cylinder 37 and the tape roller 24, contacts the circumference of the folding knife 15 cylinder 33 along an arc-shaped region 25. As with the jaw segment 40 of Figure 3c, the tucking blades 35 may be segmented or notched so that the product seizing device 15 does not interfere with the capture of the signatures by the tucking blade 3 5 .
L~!~
Backqround of the Invention U.S. Patent No. 4,279,410 purports to disclose a folder for a web-fed rotary printing press. Ill this device, two 10 take- over cylinders are assigned to the circumference of a pin collecting cylinder. Tape guides are assigned to the region in the pin collecting cylinder which the ~^~
folded products are being taken from without reaching into the nip between the pin ~nll~t;ng cylinder arLd the 15 take over cylinder. As a result, a whipping of the folded products trailing edges may occur. Moreover, such a configuration often causes "dog ears~ within the edge regions of the folded products.
U.S. Patent No. 4,490,132 purports to show a paper 20 folding machine for use in rotary presses. In accordance with this device, a set of product quiding tapes is assigned to a section of the overlapping drum' s circumf erence . A gripping drum and a delivery drum are assigned to the circumference of the overlapping drum 25 without any devices for smoothing the exchange of the folded products in the nips between the corresponding product r~n~ t; n~ cylinders .
-U.S. Patent No. 4,381,106 purports to show a collect 3~1D
cylinder for a rotary folder. A series of tapes is wound around appr~ P~y half of the collecting cylinder~ s circumfererce. The series of tapes does not, however, reach the exchange region of the folded products, i.e.
5 the nip between j aw cylinder and collect cylinder.
U.S. Patent No. 4,521,007 purports to disclose braking brushes and folding apparatuses of rotary printing ~--h; n~q . A folding knife cylinder cooperates with a nip and tuck cylinder. A series of braking brushes is lO mounted on a pivotable lever. ~3y means of these braking brushes, sections of folded products are pressed to a greater or lesser extent onto the circumference of the folding knife cylinder. However, the braking brushe8 are fixedly mounted and do not reach into the ~x~ y~ region 15 itself.
DE 35 34 15Z Al discloses a folder apparatus. Folded products are ~ Iv~ d from a knife cylinder to a jaw cylinder After the folded products are taken from the circumference of the jaw cylinder, they are delivered by 20 a plurality of tape asu~ q to fan wheels. A
deceleration unit is assigned to the circumference of the jaw cylinder to slow down the folded products before they enter the conveying arrangements to the f an wheels .
Attempts have been made to increase folding accuracy by 25 applying foam pads or rubber pads on the collect cylinders circumference in order to press the product to be folded against the jaw cylinder. ~owever, these conf igurations have the disadvantage these pads must be fre~uently replaced due to wear and tear. Furt~ ~, 30 this configuration results in the products being marked when pressed against the jaw cylinder surface.
of the Invention I~ a~coL~LIl~e with the present invention a ~older --- ~lB~91 ~
apparatus is provided which includes a f irst cylinder having at least a set of first cu-lvey-~- tapeg assigned to its circumference and a olding cylinder having an ~sori ~t~l product seizing device . The product seizing S device is cooperatively engaged with a 8urfacê section of the first cylinder during product transfer. II~ V~:L~
the product seizing device moves at apprnYir~tply thê
same velocity of the product being cu--v~:y~d~
In accordance with the present invention, folded product3 10 which are being ~ y~d on the circumference of the first cylinder are seized by the product seizing device at a point prior to a fold-off area (i.e. the area where the folded products pass from the first cylinder to the folding cylinder) As a result, the folded product3 lS remain secured during their exchange from the fir3t cylinder~s CiL~:ull~Lt:Lt:~lce to the folding cylinder~s circumference For example, the trailing edges of the products to be tucked into the jaw3 on the folding (or jaw) cylinder are prevented from whipping 20 In accordance with an c ' 'il t of the present invention, the product seizing device includes one or more belts which are wrapped around the circumference of folding cylinder and which contacts and extends over an arc-length of the circumference of the first (e.g.
25 transfer or collect) cylinder. In this manner, the folded product and its trailing edge is kept under control during the exchange from the first cylinder to the folding cylinder, not merely for a short instant, but rather within an arc-length region PY~n~l;n~ over the 30 length of the folded product, thereby preventing dog ear3 or other damage to the folded product.
Moreover, the fact that the product seizing device i8 moved apprnYi r~tf~l y at the product conveying velocity prevents damage to the product which might otherwi3e . . .
.
- 21~39~
result from a si~n;fif~nt speed differential betwee~ the folded product and the product seizing device.
In accordance with a further ~ i of the present ir,vention, the surface section of the first cylinder 5 which is r~nt~ctefi by the product seizing device i8 located in front of the fold-off area (i.e. the ~ Jc area). The fold-off area extends from the nip between the first (co~ t;n~) and folding cylinders up to an end of a guiding device of the first cylinder. Moreover, the 10 surface section extends from a turning element to the nip between the two cooperating cylinders. The belt resides in grooves within the surface of the folding cylinder and is further wrapped around the turning element (e.g. a tape roller) such that the belt ~nt~ctC the surface lS section of the f irst cylinder .
Brief Description of the Drawinc~s - Fig. 1 shows a side view of a folder apparatus according to the present invention having a product seizing device ~`~
located in front of the fold-off area;
20 Fig. 2 shows a prior art folder including a stationary mounted braking brush;
Fig. 3a shows the arc shaped entering section of Fig. 1 in greater detail;
Fig. 3b shows the a cross-section of the folding cylinder 2S of Figs. 1 and 3a;
Fig. 3c shows a portion of Fig. 3a in mor- detail; and Fig 4 shows a pin-type folder in accordance with another embodiment of the present invention.
Detailed Descri~tion of the Invention ,, .
~3~1~
Fig 1 shows a side view of a folder apparatus 1 in accul dd~lC-: with the present invention which i9 mounted with delivery module 27. After printed products have been cut from a web of material by a pair of cutting 5 cylinders 2 they enter between a set of first oUUV~y~:L
tapes 4 and a set of second ~ullV~y-JL tapes 5. The products are transported to a product seizing area 11 via the conveyor tapes 4, 5. At the product seizing area 11, the folded productg are _~7.,uLuLCd by ~rjr~;n~ ~1 q lO (not shown) on the circumference of a collect cylinder 8.
It should be understood that while figure 1 illustrates a collect cylinder, the present invention i8 not limited to use with collect cylinders. For example, the cylinder 8 could also be a transfer cylinder.
15 The set of first conveyor tapes 4 extends downwardly past the product seizing area 11 and partially around the circumference of the collect cylinder 8. Referring to the bottom of Fig. 1, the first set of ~UllV~yuL tapes 4 -are further klound around tape turn rollers 18 and guided 20 via a nur.ber of rollers 10. To r-int~;n a pret~nqir~nPd state within the first and second conveyor tapes 4, 5, each set of tapes includes a tensioning means 6. As ~oon as the ~olded products emerge from the nip between the cutting cylinders 2, they pass S-wrap rollers 7, being 25 located in the path of the ~:~llV~::yUL tapes 4, 5 between the cutting cylinders 2 and a second pair of accelerator cylinders 3 Assigned to the circumference of the collect cylinder 8 is a guiding device 9, comprising a first guiding section 30 9.1 and a second guiding section 9.2. The second guiding section 9.2 establishes an upper end of a fold-off area 12 in which folded products are exchanged between the circumference of the collect cylinder 8 and a jaw (or folding) cylinder 14.
2~`63910 .
After the product-exchange in the fold-off region 12 is accomplished, the products tucked into folding jaws 20 on the circumference of the jaw cylinder 14, now being folded products are conveyed by third conveying tapes 16 5 which are wound partially around the ~aw cylinder 14.
By means of the set of third conveying tape9 16 and a set of fourth conveying tapes 17 the folded products enter the delivery module 27 and are tL~ UL Led to a product delivery 28.
0 Referring to Fig 2, on convl~ntinn~l folders, a stationary braking brush 13 i9 mounted beneath the fold-of f area 12 to keep the f olded products on the circumference of the collect cylinder 8 during l~ J~.
Since this braking brush 13 does not reach into the fold-15 off area 12, its perfnrr~n~~e in providing control of thefolded products, particularly the trailing edges, i8 rather limited.
Referring again to Fig. 1, an improved folder design in accordance with the present invention includes a product 20 seizing device 15 in place of the brush assembly 18. The product seizing device 15 contacts the circumference of the collect cylinder 8 over the length of an entering section 25 Thus, the products on the circumference of the collect cylinder 8 which are supported by the first 25 conveyor tapes 4 are seized by the product seizing device lS and thereby held against the circumference of the collect cylinder 8 until they are transferred to the jaw cylinder 14 in the fold-off area 12.
As a result, the products to be tucked into the folding 30 jaws 20 of the jaw cylinder 14 are guided and controlled throughout the fold-off area 12. IIOL~:~1V~L~ even the products critical tr~; 1 ;ns edge is firmly held against the circumf erence of the collect cylinder 8 by the .
2i~
* 7 product seizing device. Since the products trailing edge is now being seized during fold-off, a whipping n-~v~
of the trailing edge i5 Pl ;minAt~d and dog-ears no longer are likely to occur. Since the product seizing device 15, which is wound around the circumference of the jaw cylinder 14, is moved with approximately the same speed as the folded product; no significant speed differentia exists between products to be conveyed and the product seizing device 15.
As a result, a smooth product transfer is provided with reduced mechanical stress exerted on the folded products.
This facilitates hAn~l i ng of products being very thin, cut from a web of light-weight material for example.
Fig. 3a shows the entering 8ection 25 of Fig. l in greater detail. The product seizing device 15 emerge8 from grooves l9 on the circumference of the jaw cylinder 14. The grooves l9 extend over the surface of ~aw cylinder 14, the grooves 19 being axially spaced from one another Referring to Fig. 3b, in accordance with this embodiment of the present invention, the product seizing device 15 includes a plurality of belts 15.1, each belt residing in a corresponding groove l9.1 on the surface 20 of the jaw cylinder 14. The shape of the belts 15.1 could, for example, be cylindrical or rectangular.
2S Referring again to Fig. 3a, the product seizing device 15 is guided, via a tape roller 24, to contact the circumference of the collect cylinder 8. As a re8ult, the product seizing device lS is partly stripped away from the surface 26 of the ~aw cylinder 14. As shown in Fig. 3a, the tape roller 24 is positioned such that the product seizing device contacts the surface of the collect cylinder 8 over the entire circumference of the arc-shaped entering section 25. As a result, the folded products to be conveyed on the collect cylinder are 8 ~16~91D
substantially controlled tl~Ju~l~JuL the transfer proces~
to the jaw cylinder 14. In addition, instead of using a single tape roller 24, single tape rolls ~R~;r"P~ to each of the belts 15.1 may also be used.
5 By means of tucking Pl ~ (not shown) the products being held on the circumference of the collect cylinder 8, are tucked into folding jaws 20. The jaws 20 include a f ixedly and a movably mounted j aw segment 4 0 . The moveable j aw segment is actuated by a lever 21 having a 10 roller 22 driven by the outer contour of an Rrtl~t1nq cam 23 . The actuating cam 23 is schematically; n~l; r~ted by dashed lines in Fig. 3a. As st~ti~n~ry braking brushes, do not reach into the fold-off area 12, an P~r~ Pnt control of the products during cylinder exchange can be 15 accomplished.
The transfer of folded products to the jaw cylinder 14 is shown in greater detail in Fig. 3c. As P~;nP~
above,the belts 15.1 reside in grooves 19.1 which are submerged below the surface 26 of the jaw cylinder 14.
20 The jaw segment 40 includes a jaw blade holder 50 having jaw blades 55 attached thereto. The jaw blade holder 50 and jaw blades 55 are segmented so as to allow the belts 15.1 to drop below the product gripping area 91. In this manner, the belts 15.1 do not interfere with the jaw 25 blades 55 as they capture the folded product 90.
Fig. 4 shows the an embodiment of the present invention applied to a pin type folder apparatus. A draw-in roller pair 29 forwards a web 30 between a cutting cylinder 31 and a folding pin/tuck cylinder 33. The web 30 is cut by 30 knives 32 fixed on the circumference of the cutting cylinder 31. The knives 32 cooperate with groove bars on the circumference of the folding pin/tuck cylinder 33.
The signatures are being fixed onto the circumference with the cutting cylinder 31 by mean3 of pins 34. Before 9 2~391D
they reach the fold-off area 12, they are being seized by the product seizing device 15 on the circumference of the folding knife cylinder 33. The pins 33 are retracted before the signatures are tucked into folding jaws 38.
5 The Eign~tl~res are tucked into folding jaws 38 by tucker blades 35. Aa can be seen in Fig. 4 the cylinders 33, 37 are partly coYered by guiding device 36, which extends toward the nip between folding knife cylinder 33 and ~aw cylinder 37. On the circumference of the jaw cylinder 10 37, tangentially P~rtPn~iin~ grooves 19 are located for receiving the product seizing device 15. The product seizing device 15, which is wrapped around the circumference of the jaw cylinder 37 and the tape roller 24, contacts the circumference of the folding knife 15 cylinder 33 along an arc-shaped region 25. As with the jaw segment 40 of Figure 3c, the tucking blades 35 may be segmented or notched so that the product seizing device 15 does not interfere with the capture of the signatures by the tucking blade 3 5 .
L~!~
Claims (9)
1. A folder apparatus including:
a first cylinder for transporting a product;
a folding cylinder rotatably engaged with the first cylinder at a nip; and a product seizing device for securing the product against a first portion of the first cylinder during transfer of the product from the first cylinder to the folding cylinder,, the product seizing device wrapped around a portion of a surface of the folding cylinder, the produce seizing device further contacting the first portion of the surface of the first cylinder, the product seizing device moving approximately at a product conveying velocity.
a first cylinder for transporting a product;
a folding cylinder rotatably engaged with the first cylinder at a nip; and a product seizing device for securing the product against a first portion of the first cylinder during transfer of the product from the first cylinder to the folding cylinder,, the product seizing device wrapped around a portion of a surface of the folding cylinder, the produce seizing device further contacting the first portion of the surface of the first cylinder, the product seizing device moving approximately at a product conveying velocity.
2. The folder apparatus according to claim 1, wherein the first portion of the surface of the first cylinder extends beyond a beginning of a fold-off area.
3. The folder apparatus according to claim 2, further comprising a guiding device extending around a second portion of the surface of the first cylinder, the guiding device extending from a second point on the surface of the first cylinder to an end of the fold-off area.
4. The folder apparatus according to claim 1, wherein the first portion of the surface of the first cylinder extends from a turning element assigned to the product seizing device to the nip between the collect cylinder and the folding cylinder.
5. The folder apparatus according to claim 1, wherein the product seizing device resides in at least one groove below the surface of the folding cylinder.
6. The folder apparatus according to claim 1, wherein the product seizing device includes a plurality of belts, each belt residing in respective one of a plurality of grooves below the surface of the folding cylinder, the grooves being axially spaced apart from each other.
7. The folder apparatus according to claim 5, wherein the groove extends in circumferential direction on the surface of the folding cylinder.
8. A folder apparatus including:
a first cylinder having retractable product fixing devices mounted on its circumference for gripping a product;
a folding cylinder rotatably engaged with the first cylinder at a nip; and a product seizing device for securing the product against a first portion of the first cylinder during transfer of the product from the first cylinder to the folding cylinder, the product seizing device wrapped around a portion of a surface of the folding cylinder, the produce seizing device further contacting the first portion of the surface of the first cylinder, the product seizing device moving approximately at a product conveying velocity.
a first cylinder having retractable product fixing devices mounted on its circumference for gripping a product;
a folding cylinder rotatably engaged with the first cylinder at a nip; and a product seizing device for securing the product against a first portion of the first cylinder during transfer of the product from the first cylinder to the folding cylinder, the product seizing device wrapped around a portion of a surface of the folding cylinder, the produce seizing device further contacting the first portion of the surface of the first cylinder, the product seizing device moving approximately at a product conveying velocity.
9. A folder apparatus according to claim 8, further comprising a guiding device associated with the first cylinder and the folding cylinder, the guiding device extending from an end of a fold-off area to respective points on the surface of the first cylinder and the folding cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US35299294A | 1994-12-09 | 1994-12-09 | |
| US08/352992 | 1994-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2163910A1 true CA2163910A1 (en) | 1996-06-10 |
Family
ID=23387298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2163910 Abandoned CA2163910A1 (en) | 1994-12-09 | 1995-11-28 | Folder apparatus with product seizing device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0716038A3 (en) |
| JP (1) | JPH08225242A (en) |
| CA (1) | CA2163910A1 (en) |
| DE (1) | DE19542695A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19716628C2 (en) * | 1997-04-21 | 2000-11-23 | Koenig & Bauer Ag | Method and device for cross-folding signatures |
| DE10312821B4 (en) * | 2003-03-22 | 2005-12-01 | Koenig & Bauer Ag | Device for the transverse folding of sheets of flat material |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54154622A (en) * | 1978-05-26 | 1979-12-05 | Toshiba Mach Co Ltd | Paper folding apparatus for rotary press |
| DE2846191C3 (en) * | 1978-10-24 | 1981-08-13 | Koenig & Bauer AG, 8700 Würzburg | Folder for web-fed rotary printing machines |
| US4381106A (en) * | 1981-06-08 | 1983-04-26 | Motter Printing Press Co. | Collect cylinder for a rotary folder |
| DE3143243C2 (en) * | 1981-10-31 | 1985-10-24 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Folder with a ribbon cable for sheet guidance |
| DE3321577A1 (en) * | 1983-06-15 | 1984-12-20 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | BRAKE BRUSHES IN THE FOLDING DEVICE OF ROTARY PRINTING MACHINES |
| DE3534157A1 (en) * | 1985-09-25 | 1987-04-02 | Frankenthal Ag Albert | Folding apparatus |
| FR2692875B1 (en) * | 1992-06-25 | 1994-10-07 | Heidelberger Druckmasch Ag | Folding apparatus for making folded copies from a printed paper strip. |
| DE4234307A1 (en) * | 1992-10-12 | 1994-04-14 | Heidelberger Druckmasch Ag | Device for trouble-free product conveyance in folders |
-
1995
- 1995-11-16 DE DE1995142695 patent/DE19542695A1/en not_active Ceased
- 1995-11-21 EP EP95118272A patent/EP0716038A3/en not_active Withdrawn
- 1995-11-28 CA CA 2163910 patent/CA2163910A1/en not_active Abandoned
- 1995-12-08 JP JP7320433A patent/JPH08225242A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE19542695A1 (en) | 1996-06-13 |
| JPH08225242A (en) | 1996-09-03 |
| EP0716038A3 (en) | 1997-05-07 |
| EP0716038A2 (en) | 1996-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |