US20120018565A1 - Expandable shaft - Google Patents
Expandable shaft Download PDFInfo
- Publication number
- US20120018565A1 US20120018565A1 US13/143,820 US200913143820A US2012018565A1 US 20120018565 A1 US20120018565 A1 US 20120018565A1 US 200913143820 A US200913143820 A US 200913143820A US 2012018565 A1 US2012018565 A1 US 2012018565A1
- Authority
- US
- United States
- Prior art keywords
- gripping means
- shaft
- expandable
- profile
- grooves
- 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
Images
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
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/24—Constructional details adjustable in configuration, e.g. expansible
- B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
- B65H75/243—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use of a fluid
- B65H75/2437—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use of a fluid comprising a fluid-pressure-actuated elastic member, e.g. a diaphragm or a pneumatic tube
Definitions
- the present invention relates to an expandable shaft for rotatably supporting tubular cores of rolls of material which have to be supported during winding or unwinding processes.
- the material could be paper but could also be other types of web material such as textiles, metal, plastic films, foils, tapes etc.
- the expandable shaft for insertion into a core is of the type having a longitudinal extension and comprising a profile, which extends in the longitudinal direction of the shaft, the profile comprises a plurality of longitudinal grooves, inflatable and expandable chambers which are adapted to be arranged in the grooves and gripping means which are arranged in connection to the inflatable and expandable chambers, the gripping means being adapted to radial movement between a first position and a second position in view of an expansion of the inflatable and expandable chambers.
- the invention relates to a method of expanding an expandable shaft.
- the gripping means are a type of locking-release means which can be pushed into contact with the inside of a core of a roll to be winding in such a way that the core is maintained in the same position on the shaft during the winding process.
- the gripping means are holding the core in position by pressing the gripping means on or into the inside of the core.
- Expandable shafts for rotatably supporting heavy large-dimension rolls are well known. Expanding of the shafts is usually done with pure mechanical forces or with fluid pressure which most often is pneumatic, since air under pressure is normally available in manufacturing plants.
- the shaft according to the invention is of the fluid pressure type.
- U.S. Pat. No. 3,053,467 discloses one type of fluid pressure expandable shafts, where the shaft has a hollow shaft with an outer cylindrical shell comprising multiple radial openings forming a symmetrical pattern there over, a series of individual T-sectioned gripping members lying in the respective openings, an inflatable chamber in the form of a centrally placed elongated annular chamber being in connection with the gripping member. When the annular chamber inflates the gripping members are deformed outwardly and into engagement with a core.
- This type is also known from patent application U.S. Pat. No. 4,461,430, DE-A1-195 24 489 and DE-U1-295 10 88 3.
- the above-described expandable shaft suffers from the disadvantages that all the gripping members are individually in connection with the surface of the annular inflated chamber. If the gripping elements do not have equal stiffness in all radial directions, it will lead to wobble during winding. The wobble during winding result in a winding where the edges of the rewinded material will not be exactly perpendicular to the axis of the core and furthermore the wobbling produces imbalance in the mechanical parts and causes wear down of the shaft, bearings and connected parts. The wobbling during winding can also result in poor or useless products. For example, if the shaft is used in printing works the wobbling can result in bad prints. The annular inflated chamber is liable to be damaged, and is often burst.
- annular inflatable chamber with only one air bag further tends to expand the core into an out-of round condition, and grind off material from the inner side of the core.
- Another type of expanding shaft is the profile type where the shaft has a polygonal form and the surface of the shaft is provided with angularly equidistant longitudinal recesses of quadrangular shape, carrying one or more air chambers which on expanding cause pins to move radially and lock the shaft against the core of the roll, these pins being positioned on the air chambers.
- This type of shaft is known from, for instance, U.S. Pat. No. 5,681,007 and DE-A-44 39 035.
- this type of expanding profile shaft have to be manufactured of materials of high mechanical strength and rigidity.
- These types of shafts are often made of extruded aluminium. Extruded aluminium profile shafts do not always have enough mechanical strength and are vulnerable to stroke and relatively expensive to produce. If the shaft needs both good centring and high strength at the same time, the shafts are often made of milled steel and are very expensive to produce. Steel shafts furthermore have a considerable weight and demand extra and more expensive handling tools during the mounting and dismounting process.
- An object of the present invention is to wholly or partly overcome the above disadvantages and drawbacks of the prior art. More specifically, it is an object to provide an expandable shaft with increased bending strength and at the same time reduce costs and total weight.
- the core does not move axially on the shaft during winding, otherwise the edges of the rewound paper will not be exactly perpendicular to the axis of the core.
- Still another object of the invention is to provide a shaft that has a minimum number of different parts, to reduce number and cost of spare parts.
- the expanding shaft comprising an outer cylindrical tube which is arranged outside the profile, the outer cylindrical tube comprises a plurality of openings, and the gripping means are aligned with the openings in the tube so that the gripping means can project through and beyond the tube in a radial direction of the shaft during the expansion of the expandable chambers.
- Shafts comprising an outer cylindrical tubular structure increase the rigidity and strength and in particular provide maximum resistance to bending stress. With the increase of the strength from the outer cylindrical tube it will now be possible to use a cheaper and lighter profile.
- an expandable shaft comprising an outer cylindrical tube reduces the weight, the cost and increases the bending stress to which the shafts are inevitably subjected during rotation. The added strength furthermore increases the lifetime of the shaft.
- a shaft having an outer cylindrical tube has furthermore the advantage that the shaft can easily be disassembled for servicing and replacement. By removing the outer cylindrical tube the profile can be serviced and leaking expandable chambers can be sealed or replaced.
- the profile may have at least three longitudinal grooves. Three or more longitudinal grooves will enable the gripping means to support the core in at least three different places and thereby obtain a centring of the expandable shaft.
- a preferred shaft according to the invention has a profile with three longitudinal grooves which gives the best centring of the expandable shaft.
- the expandable shaft may comprise a profile with three or six longitudinal grooves, the grooves preferable being arranged with an angle of 120° or 60°, respectively, between them.
- the profile comprises 6 longitudinal grooves the inflatable chamber can be inflated sequentially.
- the gripping means may extend in the longitudinal direction of the shaft or in a tangential direction.
- gripping means When gripping means extend in the tangential direction of the shaft they will provide uniform support to the core around a major part of the circumference.
- the shaft may comprise rails arranged in the grooves between the expandable chambers and the gripping means.
- the rails protect the inflatable chambers and contribute to a simple construction.
- the gripping means may be connected to the rails.
- one or more elastic or spring member may be arranged in connection with the rails, the elastic or spring member being adapted to force the rails into the grooves when the chambers are deflated.
- the elastic or spring member can be a spring, an elastic bending, an O-ring, a rubber band or the like.
- the rails may have a projection for detachable fixation of the gripping means. Gripping means with a small notch may hereby be pressed against the projection whereby an attachable fixation is obtained.
- the gripping means and/or the projection may have further engagement in the form of further projections or notches.
- the gripping means may as well be clicked or screwed or in any other suitable way be detachably fixed to the rail.
- the profile may be divided into a plurality of modules. In this way the profile can easily be manufactured in many different lengths.
- the modules may be formed with depressions for the gripping means. Two modules can be put together and gripping means may extend partly over two modules.
- the profile modules may be fitted on one or more rods.
- the modules are hereby kept in place relative to each other by being fitted on the rods.
- the modules are pushed together to form a long profile.
- the modules are placed on the rods like pearls on a string.
- the holes in the modules for the accommodation of the rods may be positioned between the grooves.
- the rods can also provide additional strength to the shaft. This additional strength derived both from the rods own strength but also by the increased strength derived from a fixed shaft.
- Proper placement means that the grooves have to be placed direct below the plurality of openings in the outer cylindrical tube,
- the rods may be manufactured of many different materials, but if the strength is also an important issue, the rods may preferably be manufactured of any sturdy material, for example iron, steel, aluminium or other suitable materials.
- the expandable chambers may be expanded by pneumatic, since air under pressure is normally available in manufacturing plants.
- the invention also relates a method for expanding an expandable shaft.
- the method comprising the steps of:
- FIG. 1 Illustrates schematically a perspective view of an embodiment where the gripping means extend in the longitudinal direction of the shaft and with the gripping means in the first position.
- FIG. 2 Illustrates schematically the embodiment of FIG. 1 with the gripping means in the second position.
- FIG. 3 Illustrates schematically a perspective view of another embodiment where the gripping means extend in a tangential direction of the shaft with the gripping means in the first position.
- FIG. 4 Illustrates schematically the embodiment of FIG. 3 with the gripping means in the second position.
- FIG. 5 Illustrates schematically a perspective view of the embodiment of FIG. 4 where the outer cylindrical tube has been removed.
- FIG. 6 Illustrates schematically the embodiment of FIG. 3
- FIG. 6(A) is a cross sectional view along line A-A of FIG. 6
- FIG. 6 (B) is a cross sectional view along line B-B of FIG. 6 .
- FIG. 7 Illustrates schematically a perspective view of an embodiment where the profile is divided into a plurality of modules.
- FIG. 8 Illustrates schematically a perspective view of the inflation parts.
- FIG. 9 Illustrates schematically the inflation distribution part of FIG. 8
- FIG. 9(A) is a cross sectional view along line A-A of FIG. 9
- FIG. 9(B) is a perspective view of the inflation distribution part.
- FIG. 10 illustrates schematically a perspective view of an embodiment where the profile is divided into a plurality of modules which are fitted on rods.
- FIG. 11 Illustrates schematically an embodiment of a rail with gripping means.
- reference numeral 1 designates the expandable shaft according to the invention.
- the expandable shaft 1 has an outer cylindrical tube 2 comprising a plurality of openings wherein gripping means 3 are aligned.
- the gripping means 3 can project through and beyond the tube in a radial direction of the shaft.
- the gripping means 3 are adapted to radial movement between a first position and a second position depending on a not disclosed inflatable chambers.
- the gripping means 3 are elongated in the longitudinal direction of the shaft 1 and with the gripping means 3 in the first position.
- the gripping means 3 will move from the first position to a second position beyond the outer cylindrical tube 2 as disclosed in FIG. 2 .
- the gripping means 3 In the second position the gripping means 3 will be in contact with the inside of a core of a roll to be winding in such a way that the core is maintained in the same position on the shaft during the winding process.
- the gripping means 3 are holding the core in position by pressing the gripping means 3 on or into the inside of the core.
- the gripping means 3 can furthermore coated with an elastic material, or it can have a sticky surface, thereby securing a good grip on the interior face of the core without damaging it. In some situations it can be desirable that the gripping means 3 project into the inside of the core.
- the gripping means 3 can have a surface with one or more spikes.
- the gripping means are uniformly placed on the shaft and a uniform pressure exerted simultaneously thereon by the inflatable chambers.
- the shaft will centre itself in the core as its overall diameter is increased by inflation of the chambers.
- FIG. 3 discloses an embodiment of the invention where the gripping means 3 extend in a tangential direction of the shaft 1 .
- the gripping means 3 are in the first position.
- FIG. 4 discloses the same shaft 1 as in FIG. 3 , but here with the gripping means 3 in the second position.
- FIG. 3 and FIG. 4 disclose the gripping means 3 without any surface. From the figures it is possible to see how the gripping means 3 can be replaced from the outside of the shaft 1 without dismounting the shaft 1 .
- FIG. 5 discloses an embodiment of the shaft 1 with tangential gripping means 3 where the outer cylindrical tube 2 has been removed.
- the profile 4 has three grooves (in the perspective view only one groove is visible).
- the gripping means 3 are connected to rails 6 and the rails 6 is placed in the grooves. Upon inflating of the expandable chambers, not visible, the rails 6 with the connected gripping means 3 will move radially in the grooves and the gripping means 3 will be pushed through and beyond the openings in the outer cylindrical tube, not shown.
- the core of the roll is removed from the expanding shaft 1 by deflation of the expanding chambers 7 whereby the pressure from the gripping means 3 on the inside surface of the core will stop and the gravitational effect will push the rails 6 with the gripping means 3 into the grooves.
- the gripping means 3 on the ventral side will still stretch beyond the openings in the outer cylindrical tube 2 , but without any pressing forces it is therefore easy to remove the roll from the shaft 1 .
- the gripping means 3 on the ventral side still stretch beyond the openings in the outer cylindrical tube 2 . Even though there are no pressures on these gripping means 3 , they can in some situation still complicate the replacement.
- One or more elastic or spring members 5 can be placed around or partly around the gripping means 3 or, as disclosed in FIG. 5 , around the rails 6 will automatically also draw the gripping means 3 on the ventral side into the grooves.
- the elastic or spring member 5 can be made in any suitable form and material for instance a metal or plastic spring or a rubber band or elastic O-ring. When the expandable chamber is inflated, the elastic or spring means will open or stretch, and when the expandable chamber is deflated the elastic or spring means will contract and all the gripping means will be drawn into the grooves.
- FIG. 6 discloses the embodiment of FIG. 5 including the outer cylindrical tube 2
- FIG. 6(A) discloses the cross sectional view along line A-A of FIG. 6
- FIG. 6(B) discloses a cross sectional view along line B-B of FIG. 6
- the line A-A divides the shaft 1 opposite a spring member 5
- the line B-B divides the shaft throughout the gripping means 3
- the cross sectional view in FIG. 6(A) discloses an embodiment, where a spring member 5 is placed partly around the profile 4 and the rails 6 to automatically draw the gripping means into the grooves when the expanding chambers 7 are deflated.
- the number of elastic or spring members 5 per shaft depends on the length of the shaft.
- the cross sectional view in FIG. 6(B) discloses the gripping means 3 drawn into the grooves also on the ventral side, because of the spring member 5 as disclosed in FIG. 6(A) .
- FIG. 7 discloses a perspective view of an embodiment of the invention where the outer cylindrical tube 2 is disclosed with openings in the outer cylindrical tube.
- the profile 4 is built up in modules and has in this embodiment six longitudinal grooves 9 .
- the gripping means 3 are arranged to be shifted hereby the gripping means 3 are in contact with substantially the entire circumferential face of the shaft and thereby secure a good grip on the interior face of a core without deforming or damaging same.
- the modules can be formed with depressions 10 for the gripping means 3 .
- the depressions 10 are formed such that two modules put together form space for a gripping means 3 .
- the profile 4 may be formed by one single module assembled by alternating the profile modules between a reflection and a 60° rotation.
- FIG. 8 discloses an embodiment where the shaft is divided in to an inflation inlet part 11 , a distribution part 12 and a shaft part 13 .
- the distribution part 12 is disclosed in FIG. 9 , and FIG. 9(A) is a cross-sectional view along line A-A of FIG. 9 .
- the distribution part 12 is furthermore disclosed in perspective view in FIG. 9(B) .
- Air inflates the expandable chambers 7 through the inlet valve 14 and via the distribution part 12 .
- the distribution part 12 distributes the air into the tube inlet 15 .
- the air is distributed into three tube inlets 15 according to a profile with three grooves with three inflatable chambers.
- the inflation may be provided in one or both ends of the shafts 1 .
- a preferred embodiment is an embodiment where the expandable chambers have the form of tube pieces and are expanded by air from one or both ends of the tube pieces.
- Prior art often uses a closed tube with a hole for inflation in the longitudinal side.
- Use of a tube piece according to the invention instead is a cheap solution without need for preparing a hole, tightening and further fittings.
- FIG. 10 discloses a perspective view of an embodiment of the invention where the outer cylindrical tube 2 comprises a plurality of openings wherein gripping means can be placed.
- the profile 4 is disclosed built up in modules (only two modules can bee seen in FIG. 10 ). The modules are pushed together to form a long profile. In this embodiment the profile 4 has three longitudinal grooves 9 . The modules are kept in place relative to each other using in this embodiment a total of three longitudinal rods 16 . The modules are fitted on the rods 16 like pearls on a string. The three holes in the modules for the accommodation of the rods 16 are positioned between the grooves 9 . In addition to ensuring proper placement of the modules the rods can also provide additional strength to the shaft. This additional strength is derived both from the rods' own strength but also from the increased strength of a fixed shaft.
- FIG. 11 discloses an embodiment of a rail 6 with a projection 17 .
- the figure discloses schematically how gripping means 3 with a small notch 18 may be pressed against the projection 17 whereby a detachable fixation is obtained.
- the gripping means 3 and/or the projection may have further engagement in the form of further projections or notches.
- the rail 6 is placed above the expandable chamber in the groove in the profile. (Not disclosed in the FIG. 11 ).
- the gripping means can be detachable attached to the rails by pressing the gripping means 3 onto the projections 17 on the rails 6 .
- the gripping means may as well be screwed or in any other suitable way be detachable attached to the rails.
- the outer cylindrical tube may be manufactured of any sturdy material, for example iron, steel, aluminium or other suitable materials.
- the profile may be manufactured by an extrusion or casting process.
- a preferred material is plastic easy to process, relatively cheap and with low density.
- the gripping means may be manufactured of many different materials depending on the size and type of rolls to be supported under the winding process. Examples of materials could be polymer materials like polyurethane, polyethylene or polyamide or natural rubber or the like, or a metal like aluminium.
Landscapes
- Winding Of Webs (AREA)
- Steering Controls (AREA)
- Golf Clubs (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Fishing Rods (AREA)
Abstract
The present invention relates to an expandable shaft (1) for insertion into a core, the expandable shaft have a longitudinal extension and comprising:
-
- a profile (4), which extends in the longitudinal direction of the shaft, the profile comprising a plurality of longitudinal grooves;
- inflatable and expandable chambers which are adapted to be arranged in the grooves;
- gripping means (3) which are arranged in connection to the expandable chambers, the gripping means being adapted to radial movement between a first position and a second position in view of an expansion of the inflatable and expandable chambers so that the gripping means (3) are movable in a radial direction between a first position and a second position depending on an expansion of the expandable chambers wherein
- an outer cylindrical tube is arranged outside the profile (4), the outer cylindrical tube comprising a plurality of openings, and wherein the gripping means (3) are aligned with the openings of the tube so that the gripping means can project through and beyond the tube in a radial direction of the shaft during the expansion of the expandable chambers.
Description
- This application is entitled to the benefit of and incorporates by reference essential subject matter disclosed in International Patent Application No. PCT/DK2009/000223 filed on Oct. 23, 2009 and Danish Patent Application No. PA 2009 00083 filed Jan. 20, 2009.
- The present invention relates to an expandable shaft for rotatably supporting tubular cores of rolls of material which have to be supported during winding or unwinding processes. The material could be paper but could also be other types of web material such as textiles, metal, plastic films, foils, tapes etc. The expandable shaft for insertion into a core is of the type having a longitudinal extension and comprising a profile, which extends in the longitudinal direction of the shaft, the profile comprises a plurality of longitudinal grooves, inflatable and expandable chambers which are adapted to be arranged in the grooves and gripping means which are arranged in connection to the inflatable and expandable chambers, the gripping means being adapted to radial movement between a first position and a second position in view of an expansion of the inflatable and expandable chambers.
- Furthermore the invention relates to a method of expanding an expandable shaft.
- The gripping means are a type of locking-release means which can be pushed into contact with the inside of a core of a roll to be winding in such a way that the core is maintained in the same position on the shaft during the winding process. The gripping means are holding the core in position by pressing the gripping means on or into the inside of the core.
- Expandable shafts for rotatably supporting heavy large-dimension rolls are well known. Expanding of the shafts is usually done with pure mechanical forces or with fluid pressure which most often is pneumatic, since air under pressure is normally available in manufacturing plants. The shaft according to the invention is of the fluid pressure type.
- U.S. Pat. No. 3,053,467 discloses one type of fluid pressure expandable shafts, where the shaft has a hollow shaft with an outer cylindrical shell comprising multiple radial openings forming a symmetrical pattern there over, a series of individual T-sectioned gripping members lying in the respective openings, an inflatable chamber in the form of a centrally placed elongated annular chamber being in connection with the gripping member. When the annular chamber inflates the gripping members are deformed outwardly and into engagement with a core. This type is also known from patent application U.S. Pat. No. 4,461,430, DE-A1-195 24 489 and DE-U1-295 10 88 3.
- The above-described expandable shaft suffers from the disadvantages that all the gripping members are individually in connection with the surface of the annular inflated chamber. If the gripping elements do not have equal stiffness in all radial directions, it will lead to wobble during winding. The wobble during winding result in a winding where the edges of the rewinded material will not be exactly perpendicular to the axis of the core and furthermore the wobbling produces imbalance in the mechanical parts and causes wear down of the shaft, bearings and connected parts. The wobbling during winding can also result in poor or useless products. For example, if the shaft is used in printing works the wobbling can result in bad prints. The annular inflated chamber is liable to be damaged, and is often burst. When the air is discharged from the inflatable chamber the latter is deformed, as a result of which the gripping member may drop in the hollow shaft. In such a case, because of the internal structure of the shaft it is difficult to repair the shaft at the working site and the shaft has to be returned to the manufacturer.
- Furthermore this type has the problem that great external forces are applied to the annular inflatable chamber and the chamber may be moved laterally. The annular inflatable chamber with only one air bag further tends to expand the core into an out-of round condition, and grind off material from the inner side of the core.
- Another type of expanding shaft is the profile type where the shaft has a polygonal form and the surface of the shaft is provided with angularly equidistant longitudinal recesses of quadrangular shape, carrying one or more air chambers which on expanding cause pins to move radially and lock the shaft against the core of the roll, these pins being positioned on the air chambers. This type of shaft is known from, for instance, U.S. Pat. No. 5,681,007 and DE-A-44 39 035.
- Because of their polygonal form and the recesses, this type of expanding profile shaft have to be manufactured of materials of high mechanical strength and rigidity. These types of shafts are often made of extruded aluminium. Extruded aluminium profile shafts do not always have enough mechanical strength and are vulnerable to stroke and relatively expensive to produce. If the shaft needs both good centring and high strength at the same time, the shafts are often made of milled steel and are very expensive to produce. Steel shafts furthermore have a considerable weight and demand extra and more expensive handling tools during the mounting and dismounting process.
- Besides, because of the outer form, these types of shafts are vulnerable to stroke in connection with replacement of the cores. Damage to the profile can result in sharp corners and consequently in puncturing of the air chamber and vulnerable end pieces.
- Thus, there is a need for providing a flexible solution to the above-mentioned disadvantages.
- An object of the present invention is to wholly or partly overcome the above disadvantages and drawbacks of the prior art. More specifically, it is an object to provide an expandable shaft with increased bending strength and at the same time reduce costs and total weight.
- It is also important that the core does not move axially on the shaft during winding, otherwise the edges of the rewound paper will not be exactly perpendicular to the axis of the core.
- It is also an object of the present invention to provide a shaft that is simple in construction, inexpensive to manufacture, and easy to disassemble for maintenance and repair.
- Still another object of the invention is to provide a shaft that has a minimum number of different parts, to reduce number and cost of spare parts.
- The above objects, together with numerous other objects, advantages and features, which will become evident from the below description, are accomplished by a solution in accordance with the present invention in that the expanding shaft comprising an outer cylindrical tube which is arranged outside the profile, the outer cylindrical tube comprises a plurality of openings, and the gripping means are aligned with the openings in the tube so that the gripping means can project through and beyond the tube in a radial direction of the shaft during the expansion of the expandable chambers.
- Shafts comprising an outer cylindrical tubular structure increase the rigidity and strength and in particular provide maximum resistance to bending stress. With the increase of the strength from the outer cylindrical tube it will now be possible to use a cheaper and lighter profile. In total an expandable shaft comprising an outer cylindrical tube reduces the weight, the cost and increases the bending stress to which the shafts are inevitably subjected during rotation. The added strength furthermore increases the lifetime of the shaft.
- A shaft having an outer cylindrical tube has furthermore the advantage that the shaft can easily be disassembled for servicing and replacement. By removing the outer cylindrical tube the profile can be serviced and leaking expandable chambers can be sealed or replaced.
- According to one embodiment of the invention, the profile may have at least three longitudinal grooves. Three or more longitudinal grooves will enable the gripping means to support the core in at least three different places and thereby obtain a centring of the expandable shaft.
- A preferred shaft according to the invention has a profile with three longitudinal grooves which gives the best centring of the expandable shaft.
- The expandable shaft may comprise a profile with three or six longitudinal grooves, the grooves preferable being arranged with an angle of 120° or 60°, respectively, between them. When the profile comprises 6 longitudinal grooves the inflatable chamber can be inflated sequentially.
- According to one embodiment the gripping means may extend in the longitudinal direction of the shaft or in a tangential direction. When gripping means extend in the tangential direction of the shaft they will provide uniform support to the core around a major part of the circumference.
- In an embodiment of the invention the shaft may comprise rails arranged in the grooves between the expandable chambers and the gripping means. The rails protect the inflatable chambers and contribute to a simple construction. In a further embodiment according to the invention the gripping means may be connected to the rails.
- In an embodiment according to the invention one or more elastic or spring member may be arranged in connection with the rails, the elastic or spring member being adapted to force the rails into the grooves when the chambers are deflated. The elastic or spring member can be a spring, an elastic bending, an O-ring, a rubber band or the like.
- In one embodiment according to the invention the rails may have a projection for detachable fixation of the gripping means. Gripping means with a small notch may hereby be pressed against the projection whereby an attachable fixation is obtained. The gripping means and/or the projection may have further engagement in the form of further projections or notches.
- The gripping means may as well be clicked or screwed or in any other suitable way be detachably fixed to the rail.
- In an embodiment according to the invention the profile may be divided into a plurality of modules. In this way the profile can easily be manufactured in many different lengths.
- In still a further embodiment the modules may be formed with depressions for the gripping means. Two modules can be put together and gripping means may extend partly over two modules.
- In one embodiment according to the invention the profile modules may be fitted on one or more rods. The modules are hereby kept in place relative to each other by being fitted on the rods. The modules are pushed together to form a long profile. The modules are placed on the rods like pearls on a string. The holes in the modules for the accommodation of the rods may be positioned between the grooves. In addition to ensuring proper placement of the modules the rods can also provide additional strength to the shaft. This additional strength derived both from the rods own strength but also by the increased strength derived from a fixed shaft. Proper placement means that the grooves have to be placed direct below the plurality of openings in the outer cylindrical tube,
- The rods may be manufactured of many different materials, but if the strength is also an important issue, the rods may preferably be manufactured of any sturdy material, for example iron, steel, aluminium or other suitable materials.
- According to the invention the expandable chambers may be expanded by pneumatic, since air under pressure is normally available in manufacturing plants.
- The invention also relates a method for expanding an expandable shaft. The method comprising the steps of:
-
- placing the expandable shaft into a core,
- connecting an inflatable medium to the shaft, and
- expanding the expandable chamber via the inflatable medium, so that the gripping means are moved radially outwards against an inner surface of the core, whereby the shaft is aligned inside the core so that the core is fixated and held.
- The invention and its many advantages will be described in more detail below with reference to the accompanying schematic drawings, which for the purpose of illustration show some non-limiting embodiments and in which:
-
FIG. 1 Illustrates schematically a perspective view of an embodiment where the gripping means extend in the longitudinal direction of the shaft and with the gripping means in the first position. -
FIG. 2 Illustrates schematically the embodiment ofFIG. 1 with the gripping means in the second position. -
FIG. 3 Illustrates schematically a perspective view of another embodiment where the gripping means extend in a tangential direction of the shaft with the gripping means in the first position. -
FIG. 4 Illustrates schematically the embodiment ofFIG. 3 with the gripping means in the second position. -
FIG. 5 Illustrates schematically a perspective view of the embodiment ofFIG. 4 where the outer cylindrical tube has been removed. -
FIG. 6 Illustrates schematically the embodiment ofFIG. 3 , andFIG. 6(A) is a cross sectional view along line A-A ofFIG. 6 , andFIG. 6 (B) is a cross sectional view along line B-B ofFIG. 6 . -
FIG. 7 Illustrates schematically a perspective view of an embodiment where the profile is divided into a plurality of modules. -
FIG. 8 Illustrates schematically a perspective view of the inflation parts. -
FIG. 9 Illustrates schematically the inflation distribution part ofFIG. 8 , andFIG. 9(A) is a cross sectional view along line A-A ofFIG. 9 , andFIG. 9(B) is a perspective view of the inflation distribution part. -
FIG. 10 illustrates schematically a perspective view of an embodiment where the profile is divided into a plurality of modules which are fitted on rods. -
FIG. 11 Illustrates schematically an embodiment of a rail with gripping means. - All the figures are highly schematic and not necessarily to scale, and they show only parts which are necessary in order to elucidate the invention, other parts being omitted or merely suggested.
- The invention will be more concretely described with reference to its preferred embodiment shown in the accompanying figures. In those figures,
reference numeral 1 designates the expandable shaft according to the invention. Theexpandable shaft 1 has an outercylindrical tube 2 comprising a plurality of openings whereingripping means 3 are aligned. The gripping means 3 can project through and beyond the tube in a radial direction of the shaft. The gripping means 3 are adapted to radial movement between a first position and a second position depending on a not disclosed inflatable chambers. InFIG. 1 the grippingmeans 3 are elongated in the longitudinal direction of theshaft 1 and with the grippingmeans 3 in the first position. During expansion of the not disclosed inflatable chambers the grippingmeans 3 will move from the first position to a second position beyond the outercylindrical tube 2 as disclosed inFIG. 2 . In the second position the grippingmeans 3 will be in contact with the inside of a core of a roll to be winding in such a way that the core is maintained in the same position on the shaft during the winding process. The gripping means 3 are holding the core in position by pressing thegripping means 3 on or into the inside of the core. On the surface the grippingmeans 3 can furthermore coated with an elastic material, or it can have a sticky surface, thereby securing a good grip on the interior face of the core without damaging it. In some situations it can be desirable that the grippingmeans 3 project into the inside of the core. In this case, the grippingmeans 3 can have a surface with one or more spikes. The gripping means are uniformly placed on the shaft and a uniform pressure exerted simultaneously thereon by the inflatable chambers. Hereby it will be apparent that the shaft will centre itself in the core as its overall diameter is increased by inflation of the chambers. -
FIG. 3 discloses an embodiment of the invention where the grippingmeans 3 extend in a tangential direction of theshaft 1. The gripping means 3 are in the first position.FIG. 4 discloses thesame shaft 1 as inFIG. 3 , but here with the grippingmeans 3 in the second position. -
FIG. 3 andFIG. 4 disclose thegripping means 3 without any surface. From the figures it is possible to see how the grippingmeans 3 can be replaced from the outside of theshaft 1 without dismounting theshaft 1. -
FIG. 5 discloses an embodiment of theshaft 1 with tangentialgripping means 3 where the outercylindrical tube 2 has been removed. In this embodiment theprofile 4 has three grooves (in the perspective view only one groove is visible). The gripping means 3 are connected to rails 6 and the rails 6 is placed in the grooves. Upon inflating of the expandable chambers, not visible, the rails 6 with the connected grippingmeans 3 will move radially in the grooves and thegripping means 3 will be pushed through and beyond the openings in the outer cylindrical tube, not shown. - When the winding process is finished the core of the roll is removed from the expanding
shaft 1 by deflation of the expandingchambers 7 whereby the pressure from the grippingmeans 3 on the inside surface of the core will stop and the gravitational effect will push the rails 6 with the grippingmeans 3 into the grooves. The gripping means 3 on the ventral side will still stretch beyond the openings in the outercylindrical tube 2, but without any pressing forces it is therefore easy to remove the roll from theshaft 1. When theshaft 1 has to be placed in a new roll to be winded, the grippingmeans 3 on the ventral side still stretch beyond the openings in the outercylindrical tube 2. Even though there are no pressures on these grippingmeans 3, they can in some situation still complicate the replacement. One or more elastic orspring members 5 can be placed around or partly around the grippingmeans 3 or, as disclosed inFIG. 5 , around the rails 6 will automatically also draw the grippingmeans 3 on the ventral side into the grooves. The elastic orspring member 5 can be made in any suitable form and material for instance a metal or plastic spring or a rubber band or elastic O-ring. When the expandable chamber is inflated, the elastic or spring means will open or stretch, and when the expandable chamber is deflated the elastic or spring means will contract and all the gripping means will be drawn into the grooves. -
FIG. 6 discloses the embodiment ofFIG. 5 including the outercylindrical tube 2,FIG. 6(A) discloses the cross sectional view along line A-A ofFIG. 6 , andFIG. 6(B) discloses a cross sectional view along line B-B ofFIG. 6 . The line A-A divides theshaft 1 opposite aspring member 5, the line B-B divides the shaft throughout the grippingmeans 3. The cross sectional view inFIG. 6(A) discloses an embodiment, where aspring member 5 is placed partly around theprofile 4 and the rails 6 to automatically draw the gripping means into the grooves when the expandingchambers 7 are deflated. The number of elastic orspring members 5 per shaft depends on the length of the shaft. The cross sectional view inFIG. 6(B) discloses thegripping means 3 drawn into the grooves also on the ventral side, because of thespring member 5 as disclosed inFIG. 6(A) . -
FIG. 7 discloses a perspective view of an embodiment of the invention where the outercylindrical tube 2 is disclosed with openings in the outer cylindrical tube. Theprofile 4 is built up in modules and has in this embodiment sixlongitudinal grooves 9. The gripping means 3 are arranged to be shifted hereby thegripping means 3 are in contact with substantially the entire circumferential face of the shaft and thereby secure a good grip on the interior face of a core without deforming or damaging same. The modules can be formed withdepressions 10 for thegripping means 3. Thedepressions 10 are formed such that two modules put together form space for agripping means 3. Theprofile 4 may be formed by one single module assembled by alternating the profile modules between a reflection and a 60° rotation. -
FIG. 8 discloses an embodiment where the shaft is divided in to aninflation inlet part 11, adistribution part 12 and ashaft part 13. Thedistribution part 12 is disclosed inFIG. 9 , andFIG. 9(A) is a cross-sectional view along line A-A ofFIG. 9 . Thedistribution part 12 is furthermore disclosed in perspective view inFIG. 9(B) . Air inflates theexpandable chambers 7 through theinlet valve 14 and via thedistribution part 12. Thedistribution part 12 distributes the air into thetube inlet 15. In the disclosed embodiment the air is distributed into threetube inlets 15 according to a profile with three grooves with three inflatable chambers. The inflation may be provided in one or both ends of theshafts 1. A preferred embodiment is an embodiment where the expandable chambers have the form of tube pieces and are expanded by air from one or both ends of the tube pieces. Prior art often uses a closed tube with a hole for inflation in the longitudinal side. Use of a tube piece according to the invention instead is a cheap solution without need for preparing a hole, tightening and further fittings. -
FIG. 10 discloses a perspective view of an embodiment of the invention where the outercylindrical tube 2 comprises a plurality of openings wherein gripping means can be placed. Theprofile 4 is disclosed built up in modules (only two modules can bee seen inFIG. 10 ). The modules are pushed together to form a long profile. In this embodiment theprofile 4 has threelongitudinal grooves 9. The modules are kept in place relative to each other using in this embodiment a total of three longitudinal rods 16. The modules are fitted on the rods 16 like pearls on a string. The three holes in the modules for the accommodation of the rods 16 are positioned between thegrooves 9. In addition to ensuring proper placement of the modules the rods can also provide additional strength to the shaft. This additional strength is derived both from the rods' own strength but also from the increased strength of a fixed shaft. -
FIG. 11 discloses an embodiment of a rail 6 with aprojection 17. The figure discloses schematically how gripping means 3 with asmall notch 18 may be pressed against theprojection 17 whereby a detachable fixation is obtained. The gripping means 3 and/or the projection may have further engagement in the form of further projections or notches. The rail 6 is placed above the expandable chamber in the groove in the profile. (Not disclosed in theFIG. 11 ). When the profile, with the expandable chambers and the rails, has been placed in the outer cylindrical tube, the gripping means can be detachable attached to the rails by pressing thegripping means 3 onto theprojections 17 on the rails 6. The gripping means may as well be screwed or in any other suitable way be detachable attached to the rails. - The outer cylindrical tube may be manufactured of any sturdy material, for example iron, steel, aluminium or other suitable materials.
- The profile may be manufactured by an extrusion or casting process. A preferred material is plastic easy to process, relatively cheap and with low density.
- The gripping means may be manufactured of many different materials depending on the size and type of rolls to be supported under the winding process. Examples of materials could be polymer materials like polyurethane, polyethylene or polyamide or natural rubber or the like, or a metal like aluminium.
- Although the invention above has been described in connection with preferred embodiments of the invention, it will be evident for a person skilled in the art that several modifications are conceivable without departing from the invention as defined by the following claims.
Claims (14)
1-15. (canceled)
16. An expandable shaft for insertion into a core, the expandable shaft having a longitudinal extension and comprising:
a profile, which extends in the longitudinal direction of the shaft, the profile comprising a plurality of longitudinal grooves;
inflatable and expandable chambers which are adapted to be arranged in the grooves;
gripping means which are arranged in connection to chambers, the gripping means being adapted to radial movement between a first position and a second position in view of an expansion of the inflatable and expandable chambers so that the gripping means are movable in a radial direction between a first position and a second position depending on an expansion of the expandable chambers wherein
an outer removable cylindrical tube is arranged outside the profile, the outer cylindrical tube comprising a plurality of openings, and wherein the gripping means are aligned with the openings of the tube so that the gripping means can project through and beyond the tube in a radial direction of the shaft during the expansion of the expandable chambers.
17. The shaft according to claim 16 , wherein the profile comprises at least three longitudinal grooves.
18. The shaft according to claim 17 , wherein the profile comprises three or six longitudinal grooves, the grooves preferably being arranged with an angle of 120° or 60°, respectively, between them.
19. The shaft according to claim 16 , wherein the gripping means extend in the longitudinal direction of the shaft.
20. The shaft according to claim 16 , wherein the gripping means extend in a tangential direction of the shaft.
21. The shaft according to claim 16 , wherein rails is arranged in the grooves between the expandable chambers and the gripping means.
22. The shaft according to claim 21 , wherein the gripping means are connected to the rails.
23. The shaft according to claim 21 , wherein one or more elastic or spring members are arranged in connection with the rails, the elastic or spring members being adapted to force the rails into the grooves when the chambers are deflated.
24. The shaft according to claim 23 , wherein the member is a spring, an elastic bending, an O-ring, a rubber band or the like.
25. The shaft according to claim 21 , wherein the rails have a projection to detachable fixation of the gripping means.
26. The shaft according to claim 16 , wherein the profile is divided into a plurality of modules.
27. The shaft according to claim 26 , wherein the gripping means extend partly over two modules.
28. The shaft according to claim 26 , wherein the modules are fitted on one or more rods to ensure proper placement of the grooves in the modules in relation to the plurality of openings in the outer cylindrical tube.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DKPA200900083 | 2009-01-20 | ||
DKPA200900083A DK177251B1 (en) | 2009-01-20 | 2009-01-20 | An expandable shaft |
PCT/DK2009/000223 WO2010083830A1 (en) | 2009-01-20 | 2009-10-23 | An expandable shaft |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120018565A1 true US20120018565A1 (en) | 2012-01-26 |
Family
ID=41558166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/143,820 Abandoned US20120018565A1 (en) | 2009-01-20 | 2009-10-23 | Expandable shaft |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120018565A1 (en) |
EP (1) | EP2389332B1 (en) |
CN (1) | CN102292276B (en) |
DK (1) | DK177251B1 (en) |
WO (1) | WO2010083830A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108262971A (en) * | 2016-12-30 | 2018-07-10 | 福州品行科技发展有限公司 | A kind of bonding machine multipurpose clamping device |
US10640325B2 (en) | 2016-08-05 | 2020-05-05 | Datamax-O'neil Corporation | Rigid yet flexible spindle for rolled material |
CN115673906A (en) * | 2022-09-09 | 2023-02-03 | 江苏智疆航空科技发展有限公司 | Grinding device is used in ceramic core production |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL404030A1 (en) * | 2013-05-22 | 2014-11-24 | Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy | Expansion shaft |
CN104495527A (en) * | 2014-11-24 | 2015-04-08 | 江门市蓬江区华龙包装材料有限公司 | Inflatable-shaft key bar positioning device |
CN105114441B (en) * | 2014-12-02 | 2018-06-26 | 安徽格太信控科技有限公司 | A kind of main axis of dilatation for metal film cutting machine |
CN105015146B (en) * | 2015-05-26 | 2017-11-28 | 江西中景集团有限公司 | A kind of roller sleeves based on general expanding arbor |
CN107902493B (en) * | 2017-11-02 | 2019-07-23 | 苏州印丝特纺织数码科技有限公司 | A kind of cloth winding up roller of textile printing and dyeing finishing phase |
CN108907519B (en) * | 2018-07-19 | 2019-09-13 | 烟台工程职业技术学院 | Automobile manufacture workpiece centering conveying device |
CN110835793B (en) * | 2019-12-03 | 2021-01-26 | 滕州永喜无纺布有限公司 | Spreading device of sliver lap machine |
CN111408635B (en) * | 2020-03-31 | 2021-09-24 | 湖北亿纬动力有限公司 | Pole piece processing mechanism and pole piece rolling machine |
CN112414206B (en) * | 2020-11-19 | 2021-07-06 | 北京天创凯睿科技有限公司 | Gun mirror and film coating method thereof |
Citations (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2215069A (en) * | 1939-02-14 | 1940-09-17 | Meisel Press Mfg Company | Roll spindle |
US2331743A (en) * | 1942-05-23 | 1943-10-12 | Marathon Paper Mills Co | Roll spindle |
US2537492A (en) * | 1949-07-26 | 1951-01-09 | Edward H Tidland | Expansible winder shaft |
US2576254A (en) * | 1947-05-28 | 1951-11-27 | Celanese Corp | Yarn package support |
US2849192A (en) * | 1955-10-20 | 1958-08-26 | Us Shaft Company | Core engaging shaft |
US2911795A (en) * | 1955-12-07 | 1959-11-10 | Walter H Cobi | Mandrel for driving pile shells |
US3006152A (en) * | 1959-04-17 | 1961-10-31 | Rusche Fredric | Pile driving mandrel |
US3048345A (en) * | 1960-02-04 | 1962-08-07 | Kidder Press Company Inc | Collapsible shafts |
US3053467A (en) * | 1958-12-04 | 1962-09-11 | Nashua Ind Machine Corp | Expansible shaft |
US3104074A (en) * | 1961-02-27 | 1963-09-17 | Beloit Eastern Corp | Pneumatic core shaft |
US3188017A (en) * | 1963-08-05 | 1965-06-08 | Orton Corp | Winder shaft assembly |
US3391878A (en) * | 1967-04-25 | 1968-07-09 | Cameron Machine Co | Expansible mandrel |
US3552672A (en) * | 1968-02-27 | 1971-01-05 | Aero Shaft Ab | Roll spindle |
US4209138A (en) * | 1978-06-01 | 1980-06-24 | RJM Manufacturing, Inc. | Tape winding apparatus |
US4218029A (en) * | 1979-08-16 | 1980-08-19 | Voest-Alpine Aktiengesellschaft | Upcoiler |
US4220291A (en) * | 1979-08-27 | 1980-09-02 | Papa Robert B | Apparatus for winding tape on cores |
US4342433A (en) * | 1979-11-05 | 1982-08-03 | Arrow Converting Equipment Inc. | Air differential mandrel and method of differentially winding and rewinding tapes |
US4461430A (en) * | 1983-03-01 | 1984-07-24 | Louis Lever | Differential winding air shaft |
US5499780A (en) * | 1994-09-02 | 1996-03-19 | Convertech | Roll bladder support structure |
US5746387A (en) * | 1996-02-20 | 1998-05-05 | Pretto; Alessio G. | Hybrid composite expandable shaft |
US5964430A (en) * | 1998-05-28 | 1999-10-12 | Ncr Corporation | Winding arbor |
US6065715A (en) * | 1993-11-26 | 2000-05-23 | Sca Hygiene Products Ab | Expandable shaft having spiral shaped projections and it's use for winding elongated material |
US6079662A (en) * | 1999-03-31 | 2000-06-27 | Tidland Corporation | Slip shaft assembly having core axial position fixing mechanism |
US6196494B1 (en) * | 1998-10-08 | 2001-03-06 | Goldenrod Corporation | Expanding shaft |
US6402084B1 (en) * | 2000-10-19 | 2002-06-11 | Convertech, Inc. | Air differential core winding apparatus |
US7252261B2 (en) * | 2003-04-07 | 2007-08-07 | Goldenrod Corporation | Ultra-light pneumatic leaf expanding shaft |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3592405A (en) * | 1969-10-09 | 1971-07-13 | Michael M Young | Pneumatically expansible mandrel |
DE4439035A1 (en) * | 1994-11-02 | 1996-05-09 | Hans W Dr Ing Grimm | Clamp for chucks esp. mandrels holding sleeves on which strip is round |
IT1276657B1 (en) * | 1995-04-03 | 1997-11-03 | Ies Srl | STIFFENING STRUCTURE FOR TUBULAR SHAFTS IN LIGHT ALLOY RIGID PLASTIC OR SIMILAR USED FOR THE ROTATION SUPPORT |
-
2009
- 2009-01-20 DK DKPA200900083A patent/DK177251B1/en active
- 2009-10-23 CN CN200980154988.4A patent/CN102292276B/en not_active Expired - Fee Related
- 2009-10-23 EP EP09744606.6A patent/EP2389332B1/en active Active
- 2009-10-23 US US13/143,820 patent/US20120018565A1/en not_active Abandoned
- 2009-10-23 WO PCT/DK2009/000223 patent/WO2010083830A1/en active Application Filing
Patent Citations (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2215069A (en) * | 1939-02-14 | 1940-09-17 | Meisel Press Mfg Company | Roll spindle |
US2331743A (en) * | 1942-05-23 | 1943-10-12 | Marathon Paper Mills Co | Roll spindle |
US2576254A (en) * | 1947-05-28 | 1951-11-27 | Celanese Corp | Yarn package support |
US2537492A (en) * | 1949-07-26 | 1951-01-09 | Edward H Tidland | Expansible winder shaft |
US2849192A (en) * | 1955-10-20 | 1958-08-26 | Us Shaft Company | Core engaging shaft |
US2911795A (en) * | 1955-12-07 | 1959-11-10 | Walter H Cobi | Mandrel for driving pile shells |
US3053467A (en) * | 1958-12-04 | 1962-09-11 | Nashua Ind Machine Corp | Expansible shaft |
US3006152A (en) * | 1959-04-17 | 1961-10-31 | Rusche Fredric | Pile driving mandrel |
US3048345A (en) * | 1960-02-04 | 1962-08-07 | Kidder Press Company Inc | Collapsible shafts |
US3104074A (en) * | 1961-02-27 | 1963-09-17 | Beloit Eastern Corp | Pneumatic core shaft |
US3188017A (en) * | 1963-08-05 | 1965-06-08 | Orton Corp | Winder shaft assembly |
US3391878A (en) * | 1967-04-25 | 1968-07-09 | Cameron Machine Co | Expansible mandrel |
US3552672A (en) * | 1968-02-27 | 1971-01-05 | Aero Shaft Ab | Roll spindle |
US4209138A (en) * | 1978-06-01 | 1980-06-24 | RJM Manufacturing, Inc. | Tape winding apparatus |
US4218029A (en) * | 1979-08-16 | 1980-08-19 | Voest-Alpine Aktiengesellschaft | Upcoiler |
US4220291A (en) * | 1979-08-27 | 1980-09-02 | Papa Robert B | Apparatus for winding tape on cores |
US4342433A (en) * | 1979-11-05 | 1982-08-03 | Arrow Converting Equipment Inc. | Air differential mandrel and method of differentially winding and rewinding tapes |
US4461430A (en) * | 1983-03-01 | 1984-07-24 | Louis Lever | Differential winding air shaft |
US6065715A (en) * | 1993-11-26 | 2000-05-23 | Sca Hygiene Products Ab | Expandable shaft having spiral shaped projections and it's use for winding elongated material |
US5499780A (en) * | 1994-09-02 | 1996-03-19 | Convertech | Roll bladder support structure |
US5746387A (en) * | 1996-02-20 | 1998-05-05 | Pretto; Alessio G. | Hybrid composite expandable shaft |
US5964430A (en) * | 1998-05-28 | 1999-10-12 | Ncr Corporation | Winding arbor |
US6196494B1 (en) * | 1998-10-08 | 2001-03-06 | Goldenrod Corporation | Expanding shaft |
US6079662A (en) * | 1999-03-31 | 2000-06-27 | Tidland Corporation | Slip shaft assembly having core axial position fixing mechanism |
US6402084B1 (en) * | 2000-10-19 | 2002-06-11 | Convertech, Inc. | Air differential core winding apparatus |
US7252261B2 (en) * | 2003-04-07 | 2007-08-07 | Goldenrod Corporation | Ultra-light pneumatic leaf expanding shaft |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10640325B2 (en) | 2016-08-05 | 2020-05-05 | Datamax-O'neil Corporation | Rigid yet flexible spindle for rolled material |
CN108262971A (en) * | 2016-12-30 | 2018-07-10 | 福州品行科技发展有限公司 | A kind of bonding machine multipurpose clamping device |
CN115673906A (en) * | 2022-09-09 | 2023-02-03 | 江苏智疆航空科技发展有限公司 | Grinding device is used in ceramic core production |
Also Published As
Publication number | Publication date |
---|---|
EP2389332B1 (en) | 2013-04-24 |
CN102292276B (en) | 2014-11-26 |
DK177251B1 (en) | 2012-08-13 |
CN102292276A (en) | 2011-12-21 |
WO2010083830A1 (en) | 2010-07-29 |
EP2389332A1 (en) | 2011-11-30 |
DK200900083A (en) | 2010-07-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2389332B1 (en) | An expandable shaft | |
ES2203023T3 (en) | METHOD OF MANUFACTURE OF PNEUMATIC COVERS AND APPLIANCE. | |
US4135677A (en) | Pneumatic shafts, chucks and lifts for roll stock | |
EP3562686B1 (en) | Fixture for spoke to shear band attachment for a non-pneumatic tire with spoke pre-compression | |
JP2010500112A5 (en) | ||
ES2271596T3 (en) | TIRES MANUFACTURING PROCEDURE AND CRUDE TIRES MANUFACTURING EQUIPMENT. | |
CA1038688A (en) | Rotary screen mounting device | |
US4114909A (en) | Core locking device | |
US20070152094A1 (en) | Coreless winding apparatus | |
US9573106B2 (en) | Installation tools for structured catalysts | |
WO2009146332A1 (en) | Stent crimping device | |
CN110225833A (en) | Non-aeration wheel and wheel hub | |
JP2023110021A (en) | Non-pneumatic tire with looped support structure and method of making the same | |
BRPI1107097A2 (en) | tire holder appliance | |
US20160167919A1 (en) | Expandable Shaft For Winding/Unwinding Machines | |
US11833866B2 (en) | Web structure for non-pneumatic tire and method of making same | |
US7073535B1 (en) | Inflatable pipe plug | |
EP3313653B1 (en) | Bladder rings for tire vulcanization mold | |
JP4614857B2 (en) | Tire molding drum | |
US3153967A (en) | Expandable roll construction | |
CN221026967U (en) | Slip type air expansion shaft | |
CN211366592U (en) | Air shaft body structure | |
CN216512181U (en) | 3 cun inflatable shaft is with 6 cun nylon cover that expands | |
CN219602952U (en) | Easily disassemble and replace physiosis axle of vulnerable part | |
CN215159504U (en) | Hollow air expansion shaft |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: LINDALE PRODUKTER, DENMARK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WEBER, KARSTEN;REEL/FRAME:026987/0230 Effective date: 20110905 |
|
AS | Assignment |
Owner name: WEBER AIRSHAFTS APS, DENMARK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LINDALE PRODUKTER;REEL/FRAME:036508/0435 Effective date: 20150810 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |