CA2048289C - Curved path conveying device for overlapping signatures - Google Patents
Curved path conveying device for overlapping signaturesInfo
- Publication number
- CA2048289C CA2048289C CA002048289A CA2048289A CA2048289C CA 2048289 C CA2048289 C CA 2048289C CA 002048289 A CA002048289 A CA 002048289A CA 2048289 A CA2048289 A CA 2048289A CA 2048289 C CA2048289 C CA 2048289C
- Authority
- CA
- Canada
- Prior art keywords
- conveying device
- conveying
- curved path
- signatures
- conveyor
- 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.)
- Expired - Fee Related
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
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/16—Delivering or advancing articles from machines; Advancing articles to or into piles by contact of one face only with moving tapes, bands, or chains
-
- 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
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/31—Features of transport path
- B65H2301/312—Features of transport path for transport path involving at least two planes of transport forming an angle between each other
- B65H2301/3121—L-shaped
-
- 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
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/34—Modifying, selecting, changing direction of displacement
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Fish Paste Products (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Structure Of Belt Conveyors (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
Abstract
A curved path conveying device for overlapping signatures, includes a signature conveying surface formed by a plurality of endless belts, parallel with each other and rising from the inside towards the outside of the curve. The belts are driven round between powered return rollers and guided by pulleys. It is possible to vary the slope of the belt conveying surface.
Description
~4 8289 The present invention relates to a curved path conveying device for overlapping signatures.
In printing houses, the routes that connect the rotary printing presses to the various signature processing stations, for example to the distribution and stacking stations, 5 consist of rectilinear conveyors and curved path conveyors. As a result of the different peripheral speeds on the innermost route and on the outermost route of curved path conveyors, the signatures execute a fan-like relative movement of opening and closing as they travel along the curved conveyors.
A curved path conveying device is known formed by a plurality of conical 10 rollers supported adjacent to each other and forming a bearing surface Iying in the plane of the conveyors upstream and downstream. In this curved conveyor each roller is connected with the next roller by a ring belt. The bearing surface for the stream of signatures is formed by the lateral surface of the conical rollers. This conveyor has the serious drawback that in the event of a ring belt's breaking, the drive along the conveying 15 surface is interrupted. This requires the operator to intervene and the press to be stopped.
On increasing the speed of conveyance the signatures, in executing their fan-like relative movement, perform additional movements of relative slipping, caused by the centrifugal force acting on the stream of signatures. At equal speeds the slipping between the signatures varies in degree according to the parameters of the signatures, such as:
20 type of paper, quantity and distribution of the ink, size and number of pages of the signatures. The slipping of the signatures towards the outside is also encouraged by the smooth surface of the conical rollers.
It is an object of the invention to create a curved path conveying device for overlapping signatures allowing continuous and safe conveying of the stream of signatures 25 and maintaining in the outflowing stream of signatures a correct and regular overlapping of the signatures even at very high conveying speeds and for the most diverse types of signatures as regards the type of paper, the size and number of pages or weight of the signatures.
The object is achieved according to the invention with a curved path 5 conveying device for conveying signatures through a curved path between a feed conveyor and a discharge conveyor positioned at an angle to each other, the curved path conveying device comprising: a pair of conical return rollers operatively mounted for driving rotation, each return roller comprising a plurality of respective circumferential grooves, and being mounted with their base end proximal an outside edge of the curved path conveying 10 device; at least two rows of guide pulleys arranged generally radially to the curved path;
and a plurality of elastic endless conveyor belts extending through respective grooves of the return rollers and over the guide pulleys, the conveyor belts cooperatively defining a conveying surface for the signatures; and wherein the retuM rollers and the guide pulleys are mounted such that the conveying surface defined by the conveyor belts rises toward 15 the outside of the curved path conveying device.
A stable conveying surface is produced and sticking is avoided with certainty between the conveying surface and the signatures owing to the fact that the belt guide pulleys are supported on a ring segment made of sheet metal rising from the inside towards the outside of the curve and having supporting tongues, cut and bent down, that 20 the pulleys are supported freely rotatably on an axis forming an angle of less than 90 with the conveying surface and that the upper rim of the pulleys is bevelled parallel to the conveying surface.
~04 ~28~
A simple, quick-assembly support is produced for the guide pulleys owing to the fact that the guide pulleys are made hollow and, via an interposed bearing, are supported on a pin connected by a screw to a tongue of the ring sector.
Unexceptionable conveying of the stream of signatures is achieved even in 5 the case of very high speeds or of signatures that easily move against each other, owing to the fact that the ring sector is subdivided into radial segments each supporting the guide pulleys, which are arranged on a line in the manner of a spoke, and that the radial segments are supported fixed at the inside end while at the outside end they are supported height-adjustably.
Easy height-adjustability of the inclined conveying surface is achieved owing to the fact that the outside end of the radial segments has a supporting tongue with a vertical oblong hole through which passes a locking screw that can be screwed to a fixed part of the conveying device.
The guiding of the return section of the endless belts is achieved with a 15 limited number of components owing to the fact that underneath the guide pulleys of the conveying route, between the return rollers, there are provided two crosspieces arranged in the manner of spokes and supporting a row of guide pulleys for the return sections of the belts.
An unexceptionable fan-like movement of opening and closing of the 20 signatures on the curved conveyor is achieved owing to the fact that the same number of conveying belts is provided on both sides of the central conveying belt or of the centre line of the conveying route.
A uniform conveying of the stream of signatures with signatures of any size is achieved owing to the fact that the conveying belts provided on both sides of the central 4 20482~
conveying belt, or of the centre line of the conveying route, are set apart from each other at distances that increase away from the central belt, or away from the centre line, towards the ends of the return rollers.
A link is easily made between the surfaces of the entry conveyor and exit 5 conveyor with the oblique conveying surface owing to the fact that the curved path conveying device has bridging rollers driven in the area of the return rollers.
The advantages achieved with the invention lie in particular in the fact that each conveying belt covers the entire route between the return rollers, meaning that if a belt were to break it would not interrupt the continuity of the conveying surface. The 10 elasticity of the conveying belts makes it simple to vary the inclination of the conveying surface with respect to the horizontal. On the return section of the conveying belts, two radial pulleys are sufficient for each belt. Another advantage is that the curvilinear route taken by the belts can be set completely freely, and it is therefore instantly possible to select whatever radius or curvilinear route is suitable having regard to the layout, the 15 presence of pillars, corners and the like in the particular printing works. Unexceptionable movements of the stream of signatures are achieved by using conveying belts defining a polygonal line with a limited number of radial supports. The radial pulleys are driven by the conveying belts and help to pass the stream of signatures along.
Two illustrative embodiments of the invention are shown in the drawing and 20 are described in detail below.
In the drawings:
Figure 1 shows a view from above of a curved conveying device according to the invention;
Figure 2 shows a view from beneath of the conveying device in Figure 1;
~0~89 Figure 3 shows a cross-section taken along a radial Line R in Figure 1;
Figures 4 and 5 show a detail in cross-section and on an enlarged scale of a conveying surface with variable inclination; and Figure 6 shows on an enlarged scale a detail in cross-section and in side view of two radial pulleys according to the invention.
The curved path conveying device 1 according to the invention has, in the example illustrated, a shape curved through 90 with centre X for the conveying of an overlapping stream of signatures, not shown, coming from the rotary printing press, not shown, for example in the direction of the arrow F. The conveyor 1 comprises a conveying surface 2 rising from the inside towards the outside of the curve with respect to the horizontal plane Y. The conveying surface 2 is formed by a plurality of endless elastic belts 3 of a rubber-like material, preferably round in section, moving parallel to each other.
The belts 3 are driven round between two conical rollers 4 provided with circumferential grooves 5. References 7 and 8 indicate bridging rollers which may be part of the curved conveyor 1 or of incoming and exit conveyors, not shown. The return rollers 4 and the bridging rollers 7 and 8 are supported rotatably and powered, in a manner not shown, in a curved inside bar 9 and in a curved outside bar 10. Fixed to the bars 9 and 10 is a supporting ring sector 11, preferably of sheet metal, arranged so as to rise towards the outside in the same way as the conveying surface 2 and as the generatrix at the top of the conical return rollers 4. The bars 9 and 10 and the ring sector 11 form the frame 32 of the conveyor 1. The curvilinear route of the belts 3 follows concentric polygonal lines determined by guide pulleys 12 grouped along lines R in the manner of spokes leading away from the centre X of the curve towards the outside. The pulleys 12 are supported on supporting tongues 13 cut from the ring sector 11 and bent down, as may be seen in 204 8~89 Figure 3. With this construction the belts 3 form a surface 2 for [lacuna] the signatures that rises towards the outside in the manner of a banked curve.
In the example illustrated the pulleys 12 are made hollow and are supported freely rotatably on a pin 14 via an interposed bearing 15, Figure 6. The pin 14 is connected to its own cut tongue 13 by a screw 16 with a locking nut 17. The reference 18 indicates a threaded peg screwed into the cut tongue 13 and into the pin 14 and preventing the latter from rotating. As may be clearly seen from the drawings, the upper rim of the grooved pulleys 12 is bevelled 19 parallel to the conveying surface 2. In this way the signatures, diagrammatically indicated at 20 in Figures 4 and 5, move on the belts 3 over the grooved pulleys 12 smoothly and without sticking. With the construction indicated, the angle alpha, Figure 6, between the axis 21 of the pulleys 12 and the conveying surface 2 is less than 90, for example 70.
For the return section of the belts 3 underneath the ring segment 11, there are provided two radial crosspieces 23 connected to the inside curved bar 9 and to the outside curved bar 10. Each crusspiEce 23 supports a guide pulley 12 for every belt 3.
In the embodiment of Figures 4 and 5 the ring segment 11 is made in the form of individual radial sectors 24, indicated also in Figure 1 and connected in a fixed manner to the inside curved bar 9. The outside end 25 of the radial sectors 24 is connected by a screw 26 to a flexible plate 27 having an oblong vertical hole 28. Through the oblong hole 28 passes a screw 29 which may be screwed into a tapped hole 30 in the outside curved bar 10. By raising or lowering the end 25 it is thus possible to vary the inclination of the radial segments 24 and hence of the conveying surface 2, to suit the speed of the overlapping stream of signatures and the parameters of the signatures.
2Q48~8~
The conveyor 1 may have its own supporting legs, not shown, or be fixed to the incoming and exit conveyors, not shown.
The curved path conveying device according to the invention operates as follows:
the stream of signatures moves over the conveyor 1 on the conveying surface 2 formed by the conveying belts 3 which support it over the whole route between the return rollers 4. Over the pulleys 12 the signatures come into contact with the bevel 19 of the pulleys 12, whose rotation encourages movement of the signatures without obstructing the fan-like movement of opening and closing of the signatures. The high coefficient of friction of the material of the elastic belts and the slope rising towards the outside of the conveying surface 2 efficiently exclude any slipping between the signatures.
Very good results have been obtained with a curve of 90 comprising conical return rollers with a conicity of 5 and a symmetrical arrangement of belts comprising a central belt and two lateral groups of three belts with spacing increasing away from the central belt towards the end of the retum rollers 4.
In the case of particularly light signatures or glossy paper, that is having a low coefficient of friction, unexceptionable signature streams have been obtained even at speeds of up to 60 m per minute by increasing the inclination of the conveying surface 2.
This variation in inclination is possible due to the subdivision of the ring sector 11 into the radial sectors 24 and benefits from the elasticity of the belts. In the example illustrated the variation in the inclination of the conveying surface 2 with respect to the horizontal Y is achieved by loosening the screw 29 and then lifting the radial segments 24 one after the other to the desired height and tightening the screw 29 again. In practice it has been found that an elevation of the order of 10-15 mm is adequate to guarantee 2~4 ~2~9 unexceptionable conveying at speeds of up to about 60 m per minute with signatures of any kind.
In practice the number of belts, as indeed also the number of radial rows of guide pulleys, may vary according to the radius of the curve or of the signatures 5 considered.
In printing houses, the routes that connect the rotary printing presses to the various signature processing stations, for example to the distribution and stacking stations, 5 consist of rectilinear conveyors and curved path conveyors. As a result of the different peripheral speeds on the innermost route and on the outermost route of curved path conveyors, the signatures execute a fan-like relative movement of opening and closing as they travel along the curved conveyors.
A curved path conveying device is known formed by a plurality of conical 10 rollers supported adjacent to each other and forming a bearing surface Iying in the plane of the conveyors upstream and downstream. In this curved conveyor each roller is connected with the next roller by a ring belt. The bearing surface for the stream of signatures is formed by the lateral surface of the conical rollers. This conveyor has the serious drawback that in the event of a ring belt's breaking, the drive along the conveying 15 surface is interrupted. This requires the operator to intervene and the press to be stopped.
On increasing the speed of conveyance the signatures, in executing their fan-like relative movement, perform additional movements of relative slipping, caused by the centrifugal force acting on the stream of signatures. At equal speeds the slipping between the signatures varies in degree according to the parameters of the signatures, such as:
20 type of paper, quantity and distribution of the ink, size and number of pages of the signatures. The slipping of the signatures towards the outside is also encouraged by the smooth surface of the conical rollers.
It is an object of the invention to create a curved path conveying device for overlapping signatures allowing continuous and safe conveying of the stream of signatures 25 and maintaining in the outflowing stream of signatures a correct and regular overlapping of the signatures even at very high conveying speeds and for the most diverse types of signatures as regards the type of paper, the size and number of pages or weight of the signatures.
The object is achieved according to the invention with a curved path 5 conveying device for conveying signatures through a curved path between a feed conveyor and a discharge conveyor positioned at an angle to each other, the curved path conveying device comprising: a pair of conical return rollers operatively mounted for driving rotation, each return roller comprising a plurality of respective circumferential grooves, and being mounted with their base end proximal an outside edge of the curved path conveying 10 device; at least two rows of guide pulleys arranged generally radially to the curved path;
and a plurality of elastic endless conveyor belts extending through respective grooves of the return rollers and over the guide pulleys, the conveyor belts cooperatively defining a conveying surface for the signatures; and wherein the retuM rollers and the guide pulleys are mounted such that the conveying surface defined by the conveyor belts rises toward 15 the outside of the curved path conveying device.
A stable conveying surface is produced and sticking is avoided with certainty between the conveying surface and the signatures owing to the fact that the belt guide pulleys are supported on a ring segment made of sheet metal rising from the inside towards the outside of the curve and having supporting tongues, cut and bent down, that 20 the pulleys are supported freely rotatably on an axis forming an angle of less than 90 with the conveying surface and that the upper rim of the pulleys is bevelled parallel to the conveying surface.
~04 ~28~
A simple, quick-assembly support is produced for the guide pulleys owing to the fact that the guide pulleys are made hollow and, via an interposed bearing, are supported on a pin connected by a screw to a tongue of the ring sector.
Unexceptionable conveying of the stream of signatures is achieved even in 5 the case of very high speeds or of signatures that easily move against each other, owing to the fact that the ring sector is subdivided into radial segments each supporting the guide pulleys, which are arranged on a line in the manner of a spoke, and that the radial segments are supported fixed at the inside end while at the outside end they are supported height-adjustably.
Easy height-adjustability of the inclined conveying surface is achieved owing to the fact that the outside end of the radial segments has a supporting tongue with a vertical oblong hole through which passes a locking screw that can be screwed to a fixed part of the conveying device.
The guiding of the return section of the endless belts is achieved with a 15 limited number of components owing to the fact that underneath the guide pulleys of the conveying route, between the return rollers, there are provided two crosspieces arranged in the manner of spokes and supporting a row of guide pulleys for the return sections of the belts.
An unexceptionable fan-like movement of opening and closing of the 20 signatures on the curved conveyor is achieved owing to the fact that the same number of conveying belts is provided on both sides of the central conveying belt or of the centre line of the conveying route.
A uniform conveying of the stream of signatures with signatures of any size is achieved owing to the fact that the conveying belts provided on both sides of the central 4 20482~
conveying belt, or of the centre line of the conveying route, are set apart from each other at distances that increase away from the central belt, or away from the centre line, towards the ends of the return rollers.
A link is easily made between the surfaces of the entry conveyor and exit 5 conveyor with the oblique conveying surface owing to the fact that the curved path conveying device has bridging rollers driven in the area of the return rollers.
The advantages achieved with the invention lie in particular in the fact that each conveying belt covers the entire route between the return rollers, meaning that if a belt were to break it would not interrupt the continuity of the conveying surface. The 10 elasticity of the conveying belts makes it simple to vary the inclination of the conveying surface with respect to the horizontal. On the return section of the conveying belts, two radial pulleys are sufficient for each belt. Another advantage is that the curvilinear route taken by the belts can be set completely freely, and it is therefore instantly possible to select whatever radius or curvilinear route is suitable having regard to the layout, the 15 presence of pillars, corners and the like in the particular printing works. Unexceptionable movements of the stream of signatures are achieved by using conveying belts defining a polygonal line with a limited number of radial supports. The radial pulleys are driven by the conveying belts and help to pass the stream of signatures along.
Two illustrative embodiments of the invention are shown in the drawing and 20 are described in detail below.
In the drawings:
Figure 1 shows a view from above of a curved conveying device according to the invention;
Figure 2 shows a view from beneath of the conveying device in Figure 1;
~0~89 Figure 3 shows a cross-section taken along a radial Line R in Figure 1;
Figures 4 and 5 show a detail in cross-section and on an enlarged scale of a conveying surface with variable inclination; and Figure 6 shows on an enlarged scale a detail in cross-section and in side view of two radial pulleys according to the invention.
The curved path conveying device 1 according to the invention has, in the example illustrated, a shape curved through 90 with centre X for the conveying of an overlapping stream of signatures, not shown, coming from the rotary printing press, not shown, for example in the direction of the arrow F. The conveyor 1 comprises a conveying surface 2 rising from the inside towards the outside of the curve with respect to the horizontal plane Y. The conveying surface 2 is formed by a plurality of endless elastic belts 3 of a rubber-like material, preferably round in section, moving parallel to each other.
The belts 3 are driven round between two conical rollers 4 provided with circumferential grooves 5. References 7 and 8 indicate bridging rollers which may be part of the curved conveyor 1 or of incoming and exit conveyors, not shown. The return rollers 4 and the bridging rollers 7 and 8 are supported rotatably and powered, in a manner not shown, in a curved inside bar 9 and in a curved outside bar 10. Fixed to the bars 9 and 10 is a supporting ring sector 11, preferably of sheet metal, arranged so as to rise towards the outside in the same way as the conveying surface 2 and as the generatrix at the top of the conical return rollers 4. The bars 9 and 10 and the ring sector 11 form the frame 32 of the conveyor 1. The curvilinear route of the belts 3 follows concentric polygonal lines determined by guide pulleys 12 grouped along lines R in the manner of spokes leading away from the centre X of the curve towards the outside. The pulleys 12 are supported on supporting tongues 13 cut from the ring sector 11 and bent down, as may be seen in 204 8~89 Figure 3. With this construction the belts 3 form a surface 2 for [lacuna] the signatures that rises towards the outside in the manner of a banked curve.
In the example illustrated the pulleys 12 are made hollow and are supported freely rotatably on a pin 14 via an interposed bearing 15, Figure 6. The pin 14 is connected to its own cut tongue 13 by a screw 16 with a locking nut 17. The reference 18 indicates a threaded peg screwed into the cut tongue 13 and into the pin 14 and preventing the latter from rotating. As may be clearly seen from the drawings, the upper rim of the grooved pulleys 12 is bevelled 19 parallel to the conveying surface 2. In this way the signatures, diagrammatically indicated at 20 in Figures 4 and 5, move on the belts 3 over the grooved pulleys 12 smoothly and without sticking. With the construction indicated, the angle alpha, Figure 6, between the axis 21 of the pulleys 12 and the conveying surface 2 is less than 90, for example 70.
For the return section of the belts 3 underneath the ring segment 11, there are provided two radial crosspieces 23 connected to the inside curved bar 9 and to the outside curved bar 10. Each crusspiEce 23 supports a guide pulley 12 for every belt 3.
In the embodiment of Figures 4 and 5 the ring segment 11 is made in the form of individual radial sectors 24, indicated also in Figure 1 and connected in a fixed manner to the inside curved bar 9. The outside end 25 of the radial sectors 24 is connected by a screw 26 to a flexible plate 27 having an oblong vertical hole 28. Through the oblong hole 28 passes a screw 29 which may be screwed into a tapped hole 30 in the outside curved bar 10. By raising or lowering the end 25 it is thus possible to vary the inclination of the radial segments 24 and hence of the conveying surface 2, to suit the speed of the overlapping stream of signatures and the parameters of the signatures.
2Q48~8~
The conveyor 1 may have its own supporting legs, not shown, or be fixed to the incoming and exit conveyors, not shown.
The curved path conveying device according to the invention operates as follows:
the stream of signatures moves over the conveyor 1 on the conveying surface 2 formed by the conveying belts 3 which support it over the whole route between the return rollers 4. Over the pulleys 12 the signatures come into contact with the bevel 19 of the pulleys 12, whose rotation encourages movement of the signatures without obstructing the fan-like movement of opening and closing of the signatures. The high coefficient of friction of the material of the elastic belts and the slope rising towards the outside of the conveying surface 2 efficiently exclude any slipping between the signatures.
Very good results have been obtained with a curve of 90 comprising conical return rollers with a conicity of 5 and a symmetrical arrangement of belts comprising a central belt and two lateral groups of three belts with spacing increasing away from the central belt towards the end of the retum rollers 4.
In the case of particularly light signatures or glossy paper, that is having a low coefficient of friction, unexceptionable signature streams have been obtained even at speeds of up to 60 m per minute by increasing the inclination of the conveying surface 2.
This variation in inclination is possible due to the subdivision of the ring sector 11 into the radial sectors 24 and benefits from the elasticity of the belts. In the example illustrated the variation in the inclination of the conveying surface 2 with respect to the horizontal Y is achieved by loosening the screw 29 and then lifting the radial segments 24 one after the other to the desired height and tightening the screw 29 again. In practice it has been found that an elevation of the order of 10-15 mm is adequate to guarantee 2~4 ~2~9 unexceptionable conveying at speeds of up to about 60 m per minute with signatures of any kind.
In practice the number of belts, as indeed also the number of radial rows of guide pulleys, may vary according to the radius of the curve or of the signatures 5 considered.
Claims (9)
1. A curved path conveying device for conveying signatures through a curved path between a feed conveyor and a discharge conveyor positioned at an angle to each other, the curved path conveying device comprising:
a pair of conical return rollers operatively mounted for driving rotation, each return roller comprising a plurality of respective circumferential grooves, and being mounted with their base end proximal an outside edge of the curved path conveying device;
at least two rows of guide pulleys arranged generally radially to the curved path; and a plurality of elastic endless conveyor belts extending through respective grooves of the return rollers and over the guide pulleys, the conveyor belts cooperatively defining a conveying surface for the signatures;
and wherein the return rollers and the guide pulleys are mounted such that the conveying surface defined by the conveyor belts rises toward the outside of the curved path conveying device.
a pair of conical return rollers operatively mounted for driving rotation, each return roller comprising a plurality of respective circumferential grooves, and being mounted with their base end proximal an outside edge of the curved path conveying device;
at least two rows of guide pulleys arranged generally radially to the curved path; and a plurality of elastic endless conveyor belts extending through respective grooves of the return rollers and over the guide pulleys, the conveyor belts cooperatively defining a conveying surface for the signatures;
and wherein the return rollers and the guide pulleys are mounted such that the conveying surface defined by the conveyor belts rises toward the outside of the curved path conveying device.
2. A conveying device according to claim 1, wherein the guide pulleys are supported on a sheet metal ring segment which rises from the inside towards the outside of the curved path conveying device, each guide pulley being supported for free rotation about a respective axis forming an angle of less than 90° with the conveying surface, and each guide pulley being provided with an upper rim which is bevelled parallel to the conveying surface.
3. A conveying device according to claim 1 or 2, wherein each guide pulley is hollow and, via an interposed bearing, are supported on a pin connected by a screw to a respective tongue formed in the ring sector.
4. A conveying device according to claim 1 or 2, wherein the ring sector is subdivided into radial segments, each radial segment supporting a respective row of guide pulleys arranged along a line radial to the curved path, each radial segment being substantially fixedly supported at the inside edge of the curved path conveyor, and being height-adjustably supported at the outside edge of the curved path conveyor.
5. A conveying device according to claim 4, wherein the outside end of each radial segment includes a supporting tongue with a vertical oblong hole through which passes a locking screw that can be screwed to a fixed part of the conveying device.
6. A conveying device according to claim 4, wherein underneath the pulleys of the conveying route, between the return rollers, there are provided two radially arranged crosspieces supporting a respective row of guide pulleys for the return portions of the conveyor belts.
7. A conveying device according to claim 1, wherein the conveyor belts are arranged symmetrically about either a central conveyor belt or a centre line of the conveying surface.
8. A conveying device according to claim 7, wherein the distance separating the conveyor belts increases with increasing distance from either the central conveying belt or the centre line of the conveying surface.
9. A conveying device according to claim 1, further comprising bridging rollers driven in the area of the return rollers.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT02122090A IT1246426B (en) | 1990-08-03 | 1990-08-03 | CURVED TRANSPORT DEVICE FOR MARKINGS ARRANGED IN FLAKES |
| IT21220A/90 | 1990-08-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2048289A1 CA2048289A1 (en) | 1992-02-04 |
| CA2048289C true CA2048289C (en) | 1995-11-28 |
Family
ID=11178583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002048289A Expired - Fee Related CA2048289C (en) | 1990-08-03 | 1991-08-01 | Curved path conveying device for overlapping signatures |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0469570B1 (en) |
| CA (1) | CA2048289C (en) |
| DE (1) | DE59101777D1 (en) |
| IT (1) | IT1246426B (en) |
| NO (1) | NO913011L (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082014C (en) * | 1996-02-27 | 2002-04-03 | 曼内斯曼德马蒂克科尔比私人有限公司 | Hybrid closed conveyer belt |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4242542A1 (en) * | 1992-12-16 | 1994-06-23 | Heidelberger Druckmasch Ag | Product delivery system for folders on rotary printing presses |
| US5673784A (en) * | 1995-08-17 | 1997-10-07 | Food Process Systems, Inc. | Plural preformed belt conveyor corner turn |
| US5924550A (en) * | 1995-08-17 | 1999-07-20 | Karpinsky; James L. | Elastic web conveyor corner turn |
| AU711561B2 (en) * | 1996-02-27 | 1999-10-14 | Siemens Ltd. | Hybrid closed loop conveyor |
| US7210572B2 (en) * | 2005-02-03 | 2007-05-01 | Advanced Manufacturing Technology | Adjustable guide for a bottle handling system |
| US8347920B2 (en) | 2010-01-29 | 2013-01-08 | Flexibility Engineering, Llc | Pressurized fluid positioner control system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1254941A (en) * | 1915-03-30 | 1918-01-29 | Lamson Co | Corner for conveyers for newspapers and the like. |
| US2729324A (en) * | 1952-10-30 | 1956-01-03 | Cutler Hammer Inc | Horizontal turns for conveyers |
| GB2063201B (en) * | 1979-11-06 | 1984-02-01 | Fenner & Co | Conveyor apparatus |
| GB2220903B (en) * | 1988-05-20 | 1992-02-12 | Conveyor Systems | Conveyor with curved conveyor unit |
-
1990
- 1990-08-03 IT IT02122090A patent/IT1246426B/en active IP Right Grant
-
1991
- 1991-07-31 EP EP91112861A patent/EP0469570B1/en not_active Expired - Lifetime
- 1991-07-31 DE DE59101777T patent/DE59101777D1/en not_active Expired - Fee Related
- 1991-08-01 CA CA002048289A patent/CA2048289C/en not_active Expired - Fee Related
- 1991-08-02 NO NO91913011A patent/NO913011L/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082014C (en) * | 1996-02-27 | 2002-04-03 | 曼内斯曼德马蒂克科尔比私人有限公司 | Hybrid closed conveyer belt |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2048289A1 (en) | 1992-02-04 |
| EP0469570A1 (en) | 1992-02-05 |
| NO913011L (en) | 1992-02-04 |
| IT9021220A0 (en) | 1990-08-03 |
| IT9021220A1 (en) | 1992-02-03 |
| DE59101777D1 (en) | 1994-07-07 |
| IT1246426B (en) | 1994-11-18 |
| EP0469570B1 (en) | 1994-06-01 |
| NO913011D0 (en) | 1991-08-02 |
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