CA2277253A1 - Bale wrap retaining apparatus - Google Patents
Bale wrap retaining apparatus Download PDFInfo
- Publication number
- CA2277253A1 CA2277253A1 CA 2277253 CA2277253A CA2277253A1 CA 2277253 A1 CA2277253 A1 CA 2277253A1 CA 2277253 CA2277253 CA 2277253 CA 2277253 A CA2277253 A CA 2277253A CA 2277253 A1 CA2277253 A1 CA 2277253A1
- Authority
- CA
- Canada
- Prior art keywords
- bale
- wrap
- track
- retainer
- retaining 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
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B27/00—Bundling particular articles presenting special problems using string, wire, or narrow tape or band; Baling fibrous material, e.g. peat, not otherwise provided for
- B65B27/12—Baling or bundling compressible fibrous material, e.g. peat
- B65B27/125—Baling or bundling compressible fibrous material, e.g. peat and wrapping or bagging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B45/00—Apparatus or devices for supporting or holding wrappers during wrapping operation
Abstract
A bale wrap retaining apparatus and method for a paper pulp bale wrapping machine employ a retainer device movable up and down between a raised position, in which the retainer device is spaced upwardly from the bale, and a lowered position, in which the retainer device is in gripping engagement with the bale. The retainer device has retainer members engageable with opposite sides of the bale in retaining engagement with portions of a folded wrap on the bail.
A track extends along and above a path of travel of the bale and a suspension between the retainer device and the track, supports the retainer device from the track for movement along the track to a folder and a tying machine while maintaining the retaining engagement of the retainer member with the wrap.
A track extends along and above a path of travel of the bale and a suspension between the retainer device and the track, supports the retainer device from the track for movement along the track to a folder and a tying machine while maintaining the retaining engagement of the retainer member with the wrap.
Description
BALE WRAP RETAINING APPARATUS
The present invention relates to bale wrap retaining apparatus for use in bale wrapping machines, to bale wrapping machines and to methods of wrapping bales and is useful in particular, but not exclusively, for temporarily retaining partially folded wraps on bales of paper pulp.
In a conventional pulp bale wrapping apparatus, a covering sheet is firstly wrapped around a bale, with portions of the covering sheet folded against opposite sides of the bale, and the bale is then advanced to a first tying machine, at which a first wire is tied around the bail and its wrap in order to retain the wrap against the opposite sides of the bale.
The thus partially wrapped bale is then advanced along a path of travel and is either rotated through 90 degrees or is passed through a change of direction of 90 degrees and advanced further to a folding machine, at which projecting portions of the wrap are folded against opposite ends of the bale. The thus-wrapped bale is then advanced to a second tying machine, at which the second wire is tied around the bale, at right angles to the first wire, in order to retain the wrap folds against the opposite ends of the bale.
It is a disadvantage of this prior bale wrapping apparatus that it causes the consumption of a substantial amount of stainless steel wire, which it is subsequently inconvenient for the end user to remove. Also, a punch used to secure the wrap to the bale will punch the wrap itself and, thus, cause breakage of the wrap, allowing contamination of the pulp in the bale.
In another type of conventional pulp bale wrapping apparatus, glue, instead of a wire, is employed to retain the wrap. More particularly, glue is applied to the wrap which is then folded and pressed against the sides of the bale, and the bale is then advanced to an end folder, where the ends are glued and then folded and pressed against the ends of the bale.
The disadvantage of this apparatus is that the bale must remain stationary while the glue
The present invention relates to bale wrap retaining apparatus for use in bale wrapping machines, to bale wrapping machines and to methods of wrapping bales and is useful in particular, but not exclusively, for temporarily retaining partially folded wraps on bales of paper pulp.
In a conventional pulp bale wrapping apparatus, a covering sheet is firstly wrapped around a bale, with portions of the covering sheet folded against opposite sides of the bale, and the bale is then advanced to a first tying machine, at which a first wire is tied around the bail and its wrap in order to retain the wrap against the opposite sides of the bale.
The thus partially wrapped bale is then advanced along a path of travel and is either rotated through 90 degrees or is passed through a change of direction of 90 degrees and advanced further to a folding machine, at which projecting portions of the wrap are folded against opposite ends of the bale. The thus-wrapped bale is then advanced to a second tying machine, at which the second wire is tied around the bale, at right angles to the first wire, in order to retain the wrap folds against the opposite ends of the bale.
It is a disadvantage of this prior bale wrapping apparatus that it causes the consumption of a substantial amount of stainless steel wire, which it is subsequently inconvenient for the end user to remove. Also, a punch used to secure the wrap to the bale will punch the wrap itself and, thus, cause breakage of the wrap, allowing contamination of the pulp in the bale.
In another type of conventional pulp bale wrapping apparatus, glue, instead of a wire, is employed to retain the wrap. More particularly, glue is applied to the wrap which is then folded and pressed against the sides of the bale, and the bale is then advanced to an end folder, where the ends are glued and then folded and pressed against the ends of the bale.
The disadvantage of this apparatus is that the bale must remain stationary while the glue
2 dries, which produces a bottleneck in the production process. Modern mills act at fast speeds and require correspondingly fast bale wrapping, and the mill operators are therefore reluctant to employ such a slow system.
It is an object of the present invention to provide a novel and improved bale wrap retaining apparatus which enables a wrap to be retaining partially around a bale while the bale is advanced to an end folding machine.
According to the present invention, there is provided a bale wrap retaining apparatus comprising a track extending along a path of travel of a bale, a bale wrap retainer device, and a suspension movable along the track and suspending the bale wrap retainer device from the track, the suspension being operable to move the bale wrap retainer device between a raised position, in which the bale wrap retainer device is spaced upwardly from the bale, and a lowered position, in which the bale wrap retainer device is in gripping engagement with a 1 S wrapper on the device.
With the present apparatus, only one length of wire is required to be tied around the bale in order to secure the wrap on the bale. Consequently, the first length of wire, which was required in conventional prior art machines to retain the partially wrapped cover sheet material on the bale, is no longer required. This saves not only the cost of this first length of wire and of tying it around the bale but also the cost to the end user of removing it from the bale.
In an embodiment of the present invention, the suspension comprises helical tension springs biassing the bale wrap retainer device from the lowered position towards the raised position and bellows which are expansible to displace the bale wrap gripping device towards the lowered position against the action of the springs.
It is an object of the present invention to provide a novel and improved bale wrap retaining apparatus which enables a wrap to be retaining partially around a bale while the bale is advanced to an end folding machine.
According to the present invention, there is provided a bale wrap retaining apparatus comprising a track extending along a path of travel of a bale, a bale wrap retainer device, and a suspension movable along the track and suspending the bale wrap retainer device from the track, the suspension being operable to move the bale wrap retainer device between a raised position, in which the bale wrap retainer device is spaced upwardly from the bale, and a lowered position, in which the bale wrap retainer device is in gripping engagement with a 1 S wrapper on the device.
With the present apparatus, only one length of wire is required to be tied around the bale in order to secure the wrap on the bale. Consequently, the first length of wire, which was required in conventional prior art machines to retain the partially wrapped cover sheet material on the bale, is no longer required. This saves not only the cost of this first length of wire and of tying it around the bale but also the cost to the end user of removing it from the bale.
In an embodiment of the present invention, the suspension comprises helical tension springs biassing the bale wrap retainer device from the lowered position towards the raised position and bellows which are expansible to displace the bale wrap gripping device towards the lowered position against the action of the springs.
3 Preferably, the bale wrap gripping device comprises a support having opposite ends, a bale wrap retainer member at each of the opposite ends of the support and pivot connections between the bale wrap retainer members and the opposite ends of the support, the support extending transversely of the track and the bale wrap retainer members comprising angle s shaped plates.
Also according to the present invention, a bale wrap retaining apparatus comprises a track extending along a path of travel, wrap gripping means for gripping engagement with a wrap on a bale and suspension means suspending the wrap gripping means from the track, the suspension means being moveable to and fro along the track and the suspension being operable to lower the wrap gripping means onto the bale to retain the wrap in position on the bale during the advance of the bale along the path of travel.
Further according to the present invention, a method of wrapping a bale comprises the steps of dispensing a wrapper to form a wrap around the bale, moving a wrap retainer into engagement with the wrap to retain the wrap in position on the bale, advancing the bale together with the wrap retainer along a path of travel while maintaining the wrap retainer in retaining engagement with the wrap, folding the wrap at opposite ends of the bale and subsequently tying the wrap to the bale.
The present invention will be more readily apparent from the following description of a preferred embodiment thereof given, by way of example, with reference to the accompanying drawings, in which:-Figure 1 shows a view in front elevation of a bale wrap retaining apparatus according to the present invention;
Figure 2 shows a plan view of the apparatus of Figure 1;
Also according to the present invention, a bale wrap retaining apparatus comprises a track extending along a path of travel, wrap gripping means for gripping engagement with a wrap on a bale and suspension means suspending the wrap gripping means from the track, the suspension means being moveable to and fro along the track and the suspension being operable to lower the wrap gripping means onto the bale to retain the wrap in position on the bale during the advance of the bale along the path of travel.
Further according to the present invention, a method of wrapping a bale comprises the steps of dispensing a wrapper to form a wrap around the bale, moving a wrap retainer into engagement with the wrap to retain the wrap in position on the bale, advancing the bale together with the wrap retainer along a path of travel while maintaining the wrap retainer in retaining engagement with the wrap, folding the wrap at opposite ends of the bale and subsequently tying the wrap to the bale.
The present invention will be more readily apparent from the following description of a preferred embodiment thereof given, by way of example, with reference to the accompanying drawings, in which:-Figure 1 shows a view in front elevation of a bale wrap retaining apparatus according to the present invention;
Figure 2 shows a plan view of the apparatus of Figure 1;
4 Figure 3 shows a view in side elevation of the apparatus of Figures 1 and 2;
Figure 4 shows a broken-away view, in front elevation, all parts of the apparatus of Figure 1;
Figure 5 shows a side view, partly broken away, all of parts of the apparatus of Figures 1 through 4; and Figure 6 shows a plan view of a pulp bale wrapping apparatus in which the retaining apparatus of Figures 1 through 5 can be employed.
In Figure 1 of the accompanying the drawings, there is shown a bale wrap retaining apparatus which comprises a bale wrap retainer device indicated generally by reference numeral 10, which is illustrated in gripping engagement with a bale 12 and, more particularly, in contact with a cover sheet forming a wrap 11 which is partially wrapped around the bale 12.
The retainer device 10 comprises a support in the form of a transverse beam 14 which, at each of its opposite ends 15, carries a bale wrap retainer member indicated generally by reference numeral 16.
Each of the retainer members 16 comprises an angle-shaped plate 18 which has outwardly curved edges 20 and which engages, as shown in Figure 1, in snug engagement with an upper side corner 22 of the bale 12 so as to retain folded side portions 24 of the wrap 11 against opposite sides 25 of the bale 12. Each of the angle-shaped plates 18 is suspended from a respective end 15 of the transverse beam 14 by a pivotal connection comprising a swing arm 26 which it is pivotally connected at its opposite ends to the transverse beam 14 and to the respective angle-shaped plate 18.
The transverse beam 14 is suspended beneath an I-beam 28 by means of a suspension in the form of a connection indicated generally by reference numeral 30 and extends transversely of the I-beam 28. This connection 30 includes a pneumatically expansible and contractible bellows 32, which can be pneumatically inflated so as to move the transverse beam 14 downwardly from the I-beam 28, and a pair of helical tension springs 34, which act as return springs for returning the transverse beam 14 upwardly towards the I-beam 28.
The bellows 32 and the springs 34 are connected to an upwardly open housing 36, which receives the I-beam 28, and which has rollers 3 8 in rolling the engagement with flanges of the I-beam 28, which therefore forms a track for the movement of the connection 30 and the retainer device 10 to and fro along the I-beam 28 above the path of travel of the bale 12.
As can be seen from Figure 2, the transverse beam 14 is formed by a pair of elongate parallel plates 40, which are connected together by means of rods 42, and the swing arms 26 axe pivotable about the rods 42. The swing arms 26 and, thereby, the retainer members 16 are urged towards one another and, thus, towards of the opposite sides of the bale 12 by means of helical tension springs 44, which are connected between the swing arms 26 and bars 46 extending between the plates 40.
The manner in which the angle-shaped plates 18 are moved into engagement with the upper side corners 22 of the bale 12, as the transverse beam 14 is moved downwardly towards the bale 12, is illustrated in Figure 4.
As shown in Figure 4, when the transverse beam 14 is in its upper position, in which it is illustrated in unbroken lines, the angle-shaped plate 18 hangs from the beam 14 with its two sides 48 and 50 at an inclination to the horizontal. As the transverse beam 14 is lowered and lower side 48 of the plate comes into contact with the bale 12, the side 50 is pressed downwardly onto the top of the bale 12. Upon further downward movement, both sides of the angle-shaped plate 18 slide on the bale 12 or, more particularly, on the cover sheet wrapped around the bale 12, into the positions in which they are shown in chain-dot lines and in which the angle-shaped plate 18 is snugly engaged with the upper top corner 22 of the bale 12.
This movement of the angle-shaped plate 18 causes the swing arm 26 to pivot about the respective rod 42 in an anti-clockwise direction, as viewed in Figure 4, against the action of the respective spring 44.
Figure 6 shows a pulp bale wrapping apparatus or line which has a conventional wrap dispenser 45 at which the wrap 11 is dispensed, in known manner, onto the bale 12 and folded against opposite sides of the bale 12 into the condition shown in Figure 1.
The wrap dispenser 45 is followed by a first tying machine 47 which is not employed when the present invention is in use but which may be provided as a back-up or for occasional special orders requiring first and second wrap retaining wires to be applied in the conventional manner as described above.
When the present apparatus is provided, the I-beam 28 extends from this first tying machine 45 to an end folder 49.
With the folds of the wrap 11 held against the opposite sides of the bale 12 by the retainer members 16 as described above, at the end of the I-beam 28 proximate the tying machine 47, the bale 12 is advanced along its path of travel, through to a bale spinner 51, which remains unoperated, to the end folder 49, at which portions of the wrap 11 projecting from opposite ends of the wrap are folded against the opposite ends of the bale. The retainer device 10 is withdrawn from the bale 12 before the ends of the wrap 11 are then folded against the bale 12.
The retainer device 10 is driven along the I-beam by its engagement with the bale 12. When released from the bale 12, the retainer device is returned to its initial position by a drive which includes a prime mover in the form of an electric motor 52 mounted on the housing 36, a drive gear 54 on the shaft 55 of the motor 52 and a driven gear 56 meshing with the drive gear 54. The driven gear 56 is coaxial with a drive wheel 58 forming a drive member, the driven gear 56 and the drive wheel 58 being carried on one end of an arm 60, which is pivotable about the motor shaft 55 against the action of a helical tension spring 62 when the drive gear 54 is rotated by the electric motor 52. This pivotation brings the drive wheel into frictional driving engagement with the I-beam 28 so as to propel the retainer device 10 along the I-beam 28.
The bale 12 is then advanced to a second tying machine 53, where a length of wire (not shown) is tied around the bale 12 to secure the wrap 11 on the bale 12.
Consequently, only one such wire is required for that purpose.
As will be apparent to those skilled in the art, various modifications may be made in the above-described invention within the scope of the appended claims.
For example, the present bale wrap retaining apparatus may be employed in bale wrapping lines in which glue, instead of wire, is used to retain the wrap. In this case, the present apparatus applies sideways pressure against the wrap at the opposite sides of the bale, while the glue dries and while the bale is advanced from the wrap dispenser 45 to allow a succeeding bale to be wrapped in the wrap dispenser 45, thus reducing the time required for the wrapping process. Also, the present apparatus allows the use of stronger, longer-lasting adhesive which will maintain better bale quality without slowing production.
Figure 4 shows a broken-away view, in front elevation, all parts of the apparatus of Figure 1;
Figure 5 shows a side view, partly broken away, all of parts of the apparatus of Figures 1 through 4; and Figure 6 shows a plan view of a pulp bale wrapping apparatus in which the retaining apparatus of Figures 1 through 5 can be employed.
In Figure 1 of the accompanying the drawings, there is shown a bale wrap retaining apparatus which comprises a bale wrap retainer device indicated generally by reference numeral 10, which is illustrated in gripping engagement with a bale 12 and, more particularly, in contact with a cover sheet forming a wrap 11 which is partially wrapped around the bale 12.
The retainer device 10 comprises a support in the form of a transverse beam 14 which, at each of its opposite ends 15, carries a bale wrap retainer member indicated generally by reference numeral 16.
Each of the retainer members 16 comprises an angle-shaped plate 18 which has outwardly curved edges 20 and which engages, as shown in Figure 1, in snug engagement with an upper side corner 22 of the bale 12 so as to retain folded side portions 24 of the wrap 11 against opposite sides 25 of the bale 12. Each of the angle-shaped plates 18 is suspended from a respective end 15 of the transverse beam 14 by a pivotal connection comprising a swing arm 26 which it is pivotally connected at its opposite ends to the transverse beam 14 and to the respective angle-shaped plate 18.
The transverse beam 14 is suspended beneath an I-beam 28 by means of a suspension in the form of a connection indicated generally by reference numeral 30 and extends transversely of the I-beam 28. This connection 30 includes a pneumatically expansible and contractible bellows 32, which can be pneumatically inflated so as to move the transverse beam 14 downwardly from the I-beam 28, and a pair of helical tension springs 34, which act as return springs for returning the transverse beam 14 upwardly towards the I-beam 28.
The bellows 32 and the springs 34 are connected to an upwardly open housing 36, which receives the I-beam 28, and which has rollers 3 8 in rolling the engagement with flanges of the I-beam 28, which therefore forms a track for the movement of the connection 30 and the retainer device 10 to and fro along the I-beam 28 above the path of travel of the bale 12.
As can be seen from Figure 2, the transverse beam 14 is formed by a pair of elongate parallel plates 40, which are connected together by means of rods 42, and the swing arms 26 axe pivotable about the rods 42. The swing arms 26 and, thereby, the retainer members 16 are urged towards one another and, thus, towards of the opposite sides of the bale 12 by means of helical tension springs 44, which are connected between the swing arms 26 and bars 46 extending between the plates 40.
The manner in which the angle-shaped plates 18 are moved into engagement with the upper side corners 22 of the bale 12, as the transverse beam 14 is moved downwardly towards the bale 12, is illustrated in Figure 4.
As shown in Figure 4, when the transverse beam 14 is in its upper position, in which it is illustrated in unbroken lines, the angle-shaped plate 18 hangs from the beam 14 with its two sides 48 and 50 at an inclination to the horizontal. As the transverse beam 14 is lowered and lower side 48 of the plate comes into contact with the bale 12, the side 50 is pressed downwardly onto the top of the bale 12. Upon further downward movement, both sides of the angle-shaped plate 18 slide on the bale 12 or, more particularly, on the cover sheet wrapped around the bale 12, into the positions in which they are shown in chain-dot lines and in which the angle-shaped plate 18 is snugly engaged with the upper top corner 22 of the bale 12.
This movement of the angle-shaped plate 18 causes the swing arm 26 to pivot about the respective rod 42 in an anti-clockwise direction, as viewed in Figure 4, against the action of the respective spring 44.
Figure 6 shows a pulp bale wrapping apparatus or line which has a conventional wrap dispenser 45 at which the wrap 11 is dispensed, in known manner, onto the bale 12 and folded against opposite sides of the bale 12 into the condition shown in Figure 1.
The wrap dispenser 45 is followed by a first tying machine 47 which is not employed when the present invention is in use but which may be provided as a back-up or for occasional special orders requiring first and second wrap retaining wires to be applied in the conventional manner as described above.
When the present apparatus is provided, the I-beam 28 extends from this first tying machine 45 to an end folder 49.
With the folds of the wrap 11 held against the opposite sides of the bale 12 by the retainer members 16 as described above, at the end of the I-beam 28 proximate the tying machine 47, the bale 12 is advanced along its path of travel, through to a bale spinner 51, which remains unoperated, to the end folder 49, at which portions of the wrap 11 projecting from opposite ends of the wrap are folded against the opposite ends of the bale. The retainer device 10 is withdrawn from the bale 12 before the ends of the wrap 11 are then folded against the bale 12.
The retainer device 10 is driven along the I-beam by its engagement with the bale 12. When released from the bale 12, the retainer device is returned to its initial position by a drive which includes a prime mover in the form of an electric motor 52 mounted on the housing 36, a drive gear 54 on the shaft 55 of the motor 52 and a driven gear 56 meshing with the drive gear 54. The driven gear 56 is coaxial with a drive wheel 58 forming a drive member, the driven gear 56 and the drive wheel 58 being carried on one end of an arm 60, which is pivotable about the motor shaft 55 against the action of a helical tension spring 62 when the drive gear 54 is rotated by the electric motor 52. This pivotation brings the drive wheel into frictional driving engagement with the I-beam 28 so as to propel the retainer device 10 along the I-beam 28.
The bale 12 is then advanced to a second tying machine 53, where a length of wire (not shown) is tied around the bale 12 to secure the wrap 11 on the bale 12.
Consequently, only one such wire is required for that purpose.
As will be apparent to those skilled in the art, various modifications may be made in the above-described invention within the scope of the appended claims.
For example, the present bale wrap retaining apparatus may be employed in bale wrapping lines in which glue, instead of wire, is used to retain the wrap. In this case, the present apparatus applies sideways pressure against the wrap at the opposite sides of the bale, while the glue dries and while the bale is advanced from the wrap dispenser 45 to allow a succeeding bale to be wrapped in the wrap dispenser 45, thus reducing the time required for the wrapping process. Also, the present apparatus allows the use of stronger, longer-lasting adhesive which will maintain better bale quality without slowing production.
Claims (21)
1. A bale wrap retaining apparatus, comprising:
a track extending along a path of travel of a bale;
a bale wrap retainer device; and a suspension movable along said track and suspending said bale wrap retainer device from said track;
said suspension being operable to move said bale wrap retainer device between a raised position, in which said bale wrap retainer device is spaced upwardly from said bale, and a lowered position, in which said bale wrap retainer device is in gripping engagement with a wrapper on said device.
a track extending along a path of travel of a bale;
a bale wrap retainer device; and a suspension movable along said track and suspending said bale wrap retainer device from said track;
said suspension being operable to move said bale wrap retainer device between a raised position, in which said bale wrap retainer device is spaced upwardly from said bale, and a lowered position, in which said bale wrap retainer device is in gripping engagement with a wrapper on said device.
2. A bale wrap retaining apparatus as claimed in claim 1, wherein said suspension comprises helical tension springs biassing said bale wrap retainer device from said lowered position towards said raised position and bellows which are expansible to displace said bale wrap gripping device towards said lowered position against the action of said springs.
3. A bale wrap retaining apparatus as claimed in claim 1 or 2, wherein said bale wrap gripping device comprises a support having opposite ends, a bale wrap retainer member at each of said opposite ends of said support and pivot connections between said bale wrap retainer members and said opposite ends of said support, said support extending transversely of said track and said bale wrap retainer members comprising angle-shaped plates.
4. A bale wrap retaining apparatus as claimed in claim 3, including springs urging, said bale wrap retainer members about said pivot connections towards on another.
5. A bale wrap retaining apparatus as claimed in claim 4, wherein said pivot connections comprise swing arms, said swing arms having opposite ends pivotally connected to bale wrap retainer members and to said opposite ends of said support.
6. A bale wrap retaining apparatus as claimed in any one of claims 1 to 5, further comprising a carriage mounted on said track, said carriage having a drive member in driving engagement with said track, a prime mover and drive connection between said prime mover and said drive member.
7. A bale wrap retaining apparatus as a claimed in the claim 6, wherein said drive member is a drive roller, said drive including a pivotable arm supporting said drive roller for rotation towards and from engagement with said track and a spring connected to said pivotable arm and urging said drive member from engagement with said track, said drive connection comprising a drive gear driven by said prime mover and a driven gear mounted for coaxial rotation with said drive member and meshing with said drive gear.
8. A bale wrap retaining apparatus, comprising a track extending along a path of travel, wrap gripping means for gripping engagement with a wrap on a bale and suspension means suspending said wrap gripping means from said track, said suspension means being moveable to and fro along said track and said suspension being operable to lower said wrap gripping means onto said bale to retain said wrap in position on said bale during the advance of said bale along said path of travel.
9. A bale wrap retaining apparatus as claimed in claim 8, wherein said wrap gripping means comprise a pair of angular plates spaced apart from one another and swingable means carrying said angular plates and allowing said angular plates to slide into retaining engagement with said wrap at opposite edges of said bale on lowering of said wrap gripping means.
10. A bale wrap retaining apparatus as claimed in claim 8 or 9, wherein said suspension means includes spring means biassing said wrap gripping means upwardly towards a raised position and expansible displacement means for moving said wrap gripping means downwardly towards a lowered position against the action of said spring means.
11. A bale wrap retaining apparatus as claimed in claim 8, 9 or 10, including a carriage on said track, said carriage carrying said suspension means and said wrap gripping means, and drive means on said carriage for driving said carriage along said track.
12. A bale wrap retaining apparatus as claimed in claim 11, wherein said drive means includes a drive roller moveable into and out of driving engagement with said track.
13. A bale wrapping machine comprising, in succession along a path of travel, a wrapper dispensing machine, an end folder and a bale tying machine, and a bale wrap retaining apparatus between said wrapper dispensing machine and said end folder, said bale wrap retaining apparatus comprising a track extending along a path of travel of a bale, a bale wrap retainer device and a suspension movable along said track and suspending a said bale wrap retainer device from said track.
14. A bale wrapping machine as claimed in claim 13, wherein said suspension comprises helical tension springs biassing said bale wrap retainer device from a lowered position towards a raised position and bellows which are expansible to displace said bale wrap gripping device towards said lowered position against the action of said springs.
15. A bale wrapping machine as claimed in claim 13 or 14, wherein said bale wrap retainer device comprises a support having opposite ends, a bale wrap retainer member at each of said opposite ends of said support and pivot connections between said bale wrap retainer members and said opposite ends of said support, said support extending transversely of said track and said bale wrap retainer members comprising angle-shaped plates.
16. A bale wrapping machine as claimed in claim 15, wherein said pivot connectors comprise swing arms, said swing arms having opposite ends pivotally connected to bale wrap retainer members and said opposite ends of said support.
17. A method of wrapping a bale, which comprises the steps of dispensing a wrapper to form a wrap around said bale, moving a wrap retainer into engagement with said wrap to retain said wrap in position on said bale, advancing said bale together with said wrap retainer along a path of travel while maintaining said wrap retainer in retaining engagement with said wrap, folding said wrap at opposite ends of said bale and subsequently tying said wrap to said bale.
18. A method as claimed in claim 17, which includes suspending said wrap retainer from a track extending along said path of travel of said bale and driving said wrap retainer along said track.
19. A method as claimed in claim 17 or 18, which includes lowering and raising said wrap retainer into and out of retaining engagement with said wrap on said bale.
20. A method as claimed in claim 17, 18 or 19, which includes swingably suspending a pair of angular bale wrap retainer plates and lowering said wrap retainer towards said bale so as to slidably engage said angular bale wrap retainer plates with said wrap at opposite edges of said bale.
21. A method as claimed in claim 20, which includes resiliently biassing said angular bale wrap retainer plates towards one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2277253 CA2277253A1 (en) | 1999-07-09 | 1999-07-09 | Bale wrap retaining apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2277253 CA2277253A1 (en) | 1999-07-09 | 1999-07-09 | Bale wrap retaining apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2277253A1 true CA2277253A1 (en) | 2001-01-09 |
Family
ID=4163713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2277253 Abandoned CA2277253A1 (en) | 1999-07-09 | 1999-07-09 | Bale wrap retaining apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2277253A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109436873A (en) * | 2018-12-12 | 2019-03-08 | 珠海桑贝思精密科技有限公司 | Cloth-wrapping machine and its infantees method |
-
1999
- 1999-07-09 CA CA 2277253 patent/CA2277253A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109436873A (en) * | 2018-12-12 | 2019-03-08 | 珠海桑贝思精密科技有限公司 | Cloth-wrapping machine and its infantees method |
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| Date | Code | Title | Description |
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| EEER | Examination request | ||
| FZDE | Dead |