CA2291898C - Equipment for the process of continuously feeding packaging material - Google Patents
Equipment for the process of continuously feeding packaging material Download PDFInfo
- Publication number
- CA2291898C CA2291898C CA 2291898 CA2291898A CA2291898C CA 2291898 C CA2291898 C CA 2291898C CA 2291898 CA2291898 CA 2291898 CA 2291898 A CA2291898 A CA 2291898A CA 2291898 C CA2291898 C CA 2291898C
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- Canada
- Prior art keywords
- tool
- drive
- tools
- carrier
- processing path
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Classifications
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- 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
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
- B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
- B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
- B65B51/306—Counter-rotating devices
Abstract
In order to produce bags from continuously run film tubes, heated pairs of tools are used, the carriers of which rotate around an axis in such a manner, that they are pressed against each other at the distance of the bag length, acting on the film tube. During the duration of the process the tools run synchronously with the flow of the material. In order to achieve a higher throughput the number of tools used can be raised according to this invention, maintaining the same sealing time by mounting the tools (6,16) correspondingly their carriers (1,11) via cranks (2,12) on drive shafts (3,13 correspondingly 4,14) in a cantilevered manner, i.e. freely sticking out. Through this tools on opposing sides can mesh and be run independently from each other.
Description
EQUIPMENT FOR THE PROCESS OF CONTINUOUSLY FEEDING
PACKAGING MATERIAL
The invention relates to equipment for the processing of continuously feeding packaging material with tools, which act upon the material in a discontinuous manner. Such equipment is used, for example, for the production of bags made from a film tube, which is welded or glued.
Depending on bag length, tools are used, which are installed perpendicular to the film feed direction and which glue or weld the film tube, using heat and pressure to produce the bottom and the top of the bag.
To provide sufficient time for the heat to act upon the packaging material during the production of bags, the sealing jaws have to travel at the same speed as the packaging material, and have to return to the feeding film by one bag length after each welding or gluing process.
This return travel can be achieved through the established method of using of a mechanism, which features a type of paddle wheel, where the sealing jaws are mounted to the front face of the paddles. The paddle wheel rotates at such a rate, that the travel speed of the sealing jaws coincides with the film feed speed.
Another established possibility for the return travel of the sealing jaws by one bag length after the welding cycle, consists of a mechanism which retracts the sealing jaws from the film through a cam arrangement or an articulated joint. The jaws are then returned in a straight-line or orbital motion to the position of the next welding line and from this point move synchronously with the film, as dictated by the welding or sealing time.
In a similar fashion, it is possible to process other materials as well, in continuous operation with discontinuously working sealing jaws.
While the use of the paddle wheel severely limits the throughput speed, because of the required contact time of the sealing jaws, in other words the film feed must be slowed or stopped. The return of the sealing jaws to the start position requires more time than the filling of a bag. If it is desired to increase the film feed velocity for the same material, it would be necessary to increase the length of the processing cycle in accordance with the required contact duration of the tools.
The invention is based on the task to design a mechanism for the processing of continuously fed materials, which would significantly increase the production rate, while maintaining the same time for the synchronous movement of the jaws with the processed material.
According to the invention, this is achieved by mounting the tools (6,16) which work on the film tube (FS) or other material, respectively their carriers (1,11) through cranks (2,12) attached to drive axles (3,13 respectively 4,14) in a cantilevered manner, i.e. freely sticking out.
In this design the tools are mounted to the cranks only single sided, such that two such opposing pairs of tools form a duo, the independently controllable pair of tools of which can mesh in the same space with their drive shafts.
It is advantageous to have the drives of the drive shafts independently controllable from each other.
Through this arrangement, it is possible to shorten the cycle time significantly with a quick return of the tools, which allows an increase in throughput.
Employing two tools alternatingly working on the material, it is advantageous to arrange the bearing supports of the two tools, respectively pair of tools, in a coaxial manner, i.e. mounted on the same axis.
For this purpose, one of the shafts is hollow, such that it can traversed by a second, concentric shaft.
The improved accessibility of the processing area, achieved through the cantilevered mounting, permits the use of tools in such a manner that, based on the invention, two pairs of tool carriers with their drives can be installed with opposing tools on either side of the material.
If the tool carriers are identically equipped, it is possible to double the throughput with the same speed of the dual drives. If the jaw carriers are not identically equipped, two operations in the processing area are executed in one cycle. Among these are operations such as: stripping, cutting, and perforating.
In many applications, the drives are laid out such that the tools move in identical orbits at the same speed.
This invention allows the choice of unequal drive systems because the tool carriers which rotate on different radii and therefore at different distances to the welding operation, resulting different operations.
The drives of the tool carriers can be controlled independently of each other.
Specifically, the travel speeds in the processing area can be different from those of the return stroke. It is possible to increase
PACKAGING MATERIAL
The invention relates to equipment for the processing of continuously feeding packaging material with tools, which act upon the material in a discontinuous manner. Such equipment is used, for example, for the production of bags made from a film tube, which is welded or glued.
Depending on bag length, tools are used, which are installed perpendicular to the film feed direction and which glue or weld the film tube, using heat and pressure to produce the bottom and the top of the bag.
To provide sufficient time for the heat to act upon the packaging material during the production of bags, the sealing jaws have to travel at the same speed as the packaging material, and have to return to the feeding film by one bag length after each welding or gluing process.
This return travel can be achieved through the established method of using of a mechanism, which features a type of paddle wheel, where the sealing jaws are mounted to the front face of the paddles. The paddle wheel rotates at such a rate, that the travel speed of the sealing jaws coincides with the film feed speed.
Another established possibility for the return travel of the sealing jaws by one bag length after the welding cycle, consists of a mechanism which retracts the sealing jaws from the film through a cam arrangement or an articulated joint. The jaws are then returned in a straight-line or orbital motion to the position of the next welding line and from this point move synchronously with the film, as dictated by the welding or sealing time.
In a similar fashion, it is possible to process other materials as well, in continuous operation with discontinuously working sealing jaws.
While the use of the paddle wheel severely limits the throughput speed, because of the required contact time of the sealing jaws, in other words the film feed must be slowed or stopped. The return of the sealing jaws to the start position requires more time than the filling of a bag. If it is desired to increase the film feed velocity for the same material, it would be necessary to increase the length of the processing cycle in accordance with the required contact duration of the tools.
The invention is based on the task to design a mechanism for the processing of continuously fed materials, which would significantly increase the production rate, while maintaining the same time for the synchronous movement of the jaws with the processed material.
According to the invention, this is achieved by mounting the tools (6,16) which work on the film tube (FS) or other material, respectively their carriers (1,11) through cranks (2,12) attached to drive axles (3,13 respectively 4,14) in a cantilevered manner, i.e. freely sticking out.
In this design the tools are mounted to the cranks only single sided, such that two such opposing pairs of tools form a duo, the independently controllable pair of tools of which can mesh in the same space with their drive shafts.
It is advantageous to have the drives of the drive shafts independently controllable from each other.
Through this arrangement, it is possible to shorten the cycle time significantly with a quick return of the tools, which allows an increase in throughput.
Employing two tools alternatingly working on the material, it is advantageous to arrange the bearing supports of the two tools, respectively pair of tools, in a coaxial manner, i.e. mounted on the same axis.
For this purpose, one of the shafts is hollow, such that it can traversed by a second, concentric shaft.
The improved accessibility of the processing area, achieved through the cantilevered mounting, permits the use of tools in such a manner that, based on the invention, two pairs of tool carriers with their drives can be installed with opposing tools on either side of the material.
If the tool carriers are identically equipped, it is possible to double the throughput with the same speed of the dual drives. If the jaw carriers are not identically equipped, two operations in the processing area are executed in one cycle. Among these are operations such as: stripping, cutting, and perforating.
In many applications, the drives are laid out such that the tools move in identical orbits at the same speed.
This invention allows the choice of unequal drive systems because the tool carriers which rotate on different radii and therefore at different distances to the welding operation, resulting different operations.
The drives of the tool carriers can be controlled independently of each other.
Specifically, the travel speeds in the processing area can be different from those of the return stroke. It is possible to increase
2 the speed of the return stroke, back to the next connecting point, considerably after the tools lose contact with the material, which shortens the return stroke time significantly.
By using servo-motors, it is possible not only to control and adjust the motion, but also to prevent unwanted contacts of each other of the tools of a pair in operation.
Since the crank motion of the arms causes the tools to theoretically contact only on a line, the tools are spring mounted on the tool carriers, such that the circular drive movement of the tools results in the necessary flat contact during the period of the process.
If the tool carriers were rigidly attached on the crank, i.e. turning with its crank arm, there would be insufficient contact, because of the line-type contact area, but also problems with the air supply, electrical supply, etc. to the tools. Because of the winding motion, the required connections would have to be made through rotating couplings.
By mounting of the tool Garner on a reverse motion element, it is achieved that the tool remains always in the same orientation to the packaging material. This can be achieved by mounting the tool Garner to the crank arm with swivel bearing. In this design, the tool carrier is connected to a fixed shaft, which is part of the crank arm drive, by a belt, specifically a toothed belt or gears. As the crank arm rotates around the fixed shaft, a reverse motion is generated which keeps the tool carrier always in the same parallel position.
By means of such a design it is in addition possible to arrange the tools tilted relatively to their tool carriers in such a manner, that welding, sealing or gluing seams can be processed which differ from a 90° angle with regard to the material to be processed, for instance a tube of film.
Through this bag shapes can be produced which have sloped seams.
In accordance with one aspect of the present invention, in apparatus for processing elongate material continuously advancing along a processing path by using at least a first pair of
By using servo-motors, it is possible not only to control and adjust the motion, but also to prevent unwanted contacts of each other of the tools of a pair in operation.
Since the crank motion of the arms causes the tools to theoretically contact only on a line, the tools are spring mounted on the tool carriers, such that the circular drive movement of the tools results in the necessary flat contact during the period of the process.
If the tool carriers were rigidly attached on the crank, i.e. turning with its crank arm, there would be insufficient contact, because of the line-type contact area, but also problems with the air supply, electrical supply, etc. to the tools. Because of the winding motion, the required connections would have to be made through rotating couplings.
By mounting of the tool Garner on a reverse motion element, it is achieved that the tool remains always in the same orientation to the packaging material. This can be achieved by mounting the tool Garner to the crank arm with swivel bearing. In this design, the tool carrier is connected to a fixed shaft, which is part of the crank arm drive, by a belt, specifically a toothed belt or gears. As the crank arm rotates around the fixed shaft, a reverse motion is generated which keeps the tool carrier always in the same parallel position.
By means of such a design it is in addition possible to arrange the tools tilted relatively to their tool carriers in such a manner, that welding, sealing or gluing seams can be processed which differ from a 90° angle with regard to the material to be processed, for instance a tube of film.
Through this bag shapes can be produced which have sloped seams.
In accordance with one aspect of the present invention, in apparatus for processing elongate material continuously advancing along a processing path by using at least a first pair of
-3-cyclically driven tools between which the material passes as it moves along the processing path and which synchronously engage opposite faces of the material and move at the same linear speed as the material when in contact therewith, and return upstream to re-engage the advancing material and repeat the processing cycle, the present invention seeks to provide an improvement wherein each tool is cantilevered transversely of the processing path from a tool drive located adjacent a first edge of the processing path and further wherein the tool drive for each tool supports the tool for orbital movement around a drive axis that extends transversely of the processing path such that the orbital movement forms a circle.
In accordance with a second aspect of the present invention, in apparatus for processing an elongate film tube continuously advancing along a processing path by using at least a first pair of cyclically driven tools between which the tube passes as it moves along the processing path and which synchronously engage opposite faces of the tube and move at the same linear speed as the tube when in contact therewith, and return upstream to re-engage the advancing tube and repeat the processing cycle, the present invention seeks to provide an improvement wherein each tool is cantilevered transversely of the processing path from a tool drive located adjacent a first edge of the processing path, wherein each tool is mounted on a tool carrier, each tool drive comprises a crank arm having a drive end and a free end, each tool Garner is cantilevered at the free end of its respective crank arm, and the drive end of the crank arm is supported for rotation about a drive axis that extends transversely of the processing path such that the tool follows a circular path.
In accordance with a third aspect of the present invention, the present invention seeks to provide an apparatus for processing elongate material continuously advancing along a processing path, comprising: at least a first pair of cyclically driven tools following an orbital movement, between which the material passes as it moves along the processing path, and which synchronously engage opposite faces of the material during a portion of the orbital movement and move at the same linear speed as the material when in contact therewith, and return upstream along the orbital movement to re-engage the advancing material and repeat the -3a-processing cycle, wherein each tool is cantilevered on a near end transversely of the processing path from a tool drive located adjacent a near edge of the processing path and further wherein the tool drive for each tool supports the tool for orbital movement around a drive axis that extends transversely of the processing path such that the orbital movement forms a circle; and a pair of passive devices effective during a portion of the orbital movement, each located near a distal end of one of the pair of tools, to affect the position of the distal end.
Referring to the drawings, application examples will be described and the mode of operation of the invention will be explained.
Figure 1 shows in schematic form the basics of the main components of an assembly per the invention for -3b-the processing of a moving film tube FS for the manufacture of bags, at the point where a pair of tools are opening after completing the sealing cycle.
Figure 2 shows a side view of the same components, where the film tube is omitted for clarity.
Figure 3 shows a detail view of the run of the tool carrier, including the tool, during a working cycle.
Figure 4 shows in schematic form the functional sequence of a pair of tool carriers during working cycle.
Same components are identified with the same reference marks.
The pair of tool carriers working together 1 a and lb are connected on one side - cantilevered - via crank arms 2 with the synchronous, but counter rotating shafts 3 and 4. While crank arms 2 are connected at a rigid angle in crank fashion to drive shafts 3,13 and 4,14, tool carriers 1 a and lb are installed pivoting in heads Sa and Sb of crank arms 2. The length of crank arms 2 determines the diameter of the orbit, in which tool carriers la and lb, and with it tools 6a and 6b travel around shafts 8a and 8b. The length of crank arms 2, in conjunction with the rpm's of shafts 3 and 4 determines the length of one machine cycle and the closing duration of tools 6a and 6 b, when sealing the film tube FS.
To guide tools 6a and 6b, as shown in Figure 3, schematically shown V-belts 7 are used, which connect fixed shafts 8a and 8b each with shafts 9 of tool carriers 1, in the crank heads 5, to maintain the constant parallel orientation. During one rotation of crank arm 2, driven by shaft 3, tool carrier 1, and with it tool 6, are always kept in the same parallel orientation during the machine cycle through a corresponding reverse motion around shaft 9. Instead of the belt, gears could be employed.
The single sided, cantilevered bearing of tool carrier 1 results in good accessibility to tools 6a and 6b, and most of all in a simplified connection of the utilities to the tools 6a and 6b. Instead of rotating couplings for air, electrical current and other heating media, it is possible to employ direct lines, which need to be moved up and down as well as longitudinal only through the orbit dictated by the length of crank arms 2.
Figures 4a through 4d explain the motion sequence of the cantilevered tool pairs la and lb. During the machine cycle, shaft 3 turns clockwise, while shaft 4 turns counterclockwise.
In figure 4a the tools are shown just before closing under pressure onto the film tube, which is not shown here.
As the cycle progresses, tools 6, as shown in figure 4b are pressed onto each other against the force of their respective compression springs, not shown, located in the tool carrierla and lb. The intrinsic circular motion of tools 6 is flattened in the processing area by the compression stroke of the springs not shown. This results in parallel pressure, which acts on the total working surface tools 6. In the position as shown in figure 4c, the pressure has terminated. Crank arms 2 can now move at high speed through the position shown in figure 4d into the initial position at figure 4a, while a second pair of tools moves at film feed speed into the compressed position powered by its own drive.
With the design of the cantilevered installation of the tools, as shown in figure l, it becomes possible to position a second pair of tools, which is differently shaped than the first one, in such a manner, that the opposing jaw carriers which are attached cantilevered on the drive and with axis-parallel shafts, with an interlocking movement, can fulfill a different function, e.g. cutting, perforating, labeling.
If it is desired to use identical tools, and to have them act upon the moving material in the same rhythm, it is indicated to install a second identical unit with cantilevered tool carriers on the same axis-center line, but in minor image. This duo arrangement is noted in figure 1, where the second installation is identified with the same numbers to which 10 was added.
Shown in this application example are two sets of like tools (6,16), which are mounted 180 degrees out of phase on their drives (8,18), such, that while the first set of tools (6a,6b) is on its return stroke, the second, opposite set of tools ( 16a,16b) goes through its active work phase.
In this fashion, it is possible to increase the throughput significantly.
It is possible to use one of the set of tools for other operations. Because of the degree of freedom, which is the result of the cantilevered attachment, it is possible to use tools with different timing. Using servo-motors, the drives can be so controlled, as to make collisions of the tools impossible, even if they travel on identical, even overlapping orbits at different rotational speeds.
Because of the short time needed for the return stroke cycles, it is possible to produce bags, which are shorter than the distance required for their production.
S
A so-called "stripper" can be attached to the tools, tool carriers respectively, freely sticking out of the drive cranks, which strips off product in the seal area by means of two opposing bar type items travelling in the same direction, shortly before the tools close the film tube.
In accordance with a second aspect of the present invention, in apparatus for processing an elongate film tube continuously advancing along a processing path by using at least a first pair of cyclically driven tools between which the tube passes as it moves along the processing path and which synchronously engage opposite faces of the tube and move at the same linear speed as the tube when in contact therewith, and return upstream to re-engage the advancing tube and repeat the processing cycle, the present invention seeks to provide an improvement wherein each tool is cantilevered transversely of the processing path from a tool drive located adjacent a first edge of the processing path, wherein each tool is mounted on a tool carrier, each tool drive comprises a crank arm having a drive end and a free end, each tool Garner is cantilevered at the free end of its respective crank arm, and the drive end of the crank arm is supported for rotation about a drive axis that extends transversely of the processing path such that the tool follows a circular path.
In accordance with a third aspect of the present invention, the present invention seeks to provide an apparatus for processing elongate material continuously advancing along a processing path, comprising: at least a first pair of cyclically driven tools following an orbital movement, between which the material passes as it moves along the processing path, and which synchronously engage opposite faces of the material during a portion of the orbital movement and move at the same linear speed as the material when in contact therewith, and return upstream along the orbital movement to re-engage the advancing material and repeat the -3a-processing cycle, wherein each tool is cantilevered on a near end transversely of the processing path from a tool drive located adjacent a near edge of the processing path and further wherein the tool drive for each tool supports the tool for orbital movement around a drive axis that extends transversely of the processing path such that the orbital movement forms a circle; and a pair of passive devices effective during a portion of the orbital movement, each located near a distal end of one of the pair of tools, to affect the position of the distal end.
Referring to the drawings, application examples will be described and the mode of operation of the invention will be explained.
Figure 1 shows in schematic form the basics of the main components of an assembly per the invention for -3b-the processing of a moving film tube FS for the manufacture of bags, at the point where a pair of tools are opening after completing the sealing cycle.
Figure 2 shows a side view of the same components, where the film tube is omitted for clarity.
Figure 3 shows a detail view of the run of the tool carrier, including the tool, during a working cycle.
Figure 4 shows in schematic form the functional sequence of a pair of tool carriers during working cycle.
Same components are identified with the same reference marks.
The pair of tool carriers working together 1 a and lb are connected on one side - cantilevered - via crank arms 2 with the synchronous, but counter rotating shafts 3 and 4. While crank arms 2 are connected at a rigid angle in crank fashion to drive shafts 3,13 and 4,14, tool carriers 1 a and lb are installed pivoting in heads Sa and Sb of crank arms 2. The length of crank arms 2 determines the diameter of the orbit, in which tool carriers la and lb, and with it tools 6a and 6b travel around shafts 8a and 8b. The length of crank arms 2, in conjunction with the rpm's of shafts 3 and 4 determines the length of one machine cycle and the closing duration of tools 6a and 6 b, when sealing the film tube FS.
To guide tools 6a and 6b, as shown in Figure 3, schematically shown V-belts 7 are used, which connect fixed shafts 8a and 8b each with shafts 9 of tool carriers 1, in the crank heads 5, to maintain the constant parallel orientation. During one rotation of crank arm 2, driven by shaft 3, tool carrier 1, and with it tool 6, are always kept in the same parallel orientation during the machine cycle through a corresponding reverse motion around shaft 9. Instead of the belt, gears could be employed.
The single sided, cantilevered bearing of tool carrier 1 results in good accessibility to tools 6a and 6b, and most of all in a simplified connection of the utilities to the tools 6a and 6b. Instead of rotating couplings for air, electrical current and other heating media, it is possible to employ direct lines, which need to be moved up and down as well as longitudinal only through the orbit dictated by the length of crank arms 2.
Figures 4a through 4d explain the motion sequence of the cantilevered tool pairs la and lb. During the machine cycle, shaft 3 turns clockwise, while shaft 4 turns counterclockwise.
In figure 4a the tools are shown just before closing under pressure onto the film tube, which is not shown here.
As the cycle progresses, tools 6, as shown in figure 4b are pressed onto each other against the force of their respective compression springs, not shown, located in the tool carrierla and lb. The intrinsic circular motion of tools 6 is flattened in the processing area by the compression stroke of the springs not shown. This results in parallel pressure, which acts on the total working surface tools 6. In the position as shown in figure 4c, the pressure has terminated. Crank arms 2 can now move at high speed through the position shown in figure 4d into the initial position at figure 4a, while a second pair of tools moves at film feed speed into the compressed position powered by its own drive.
With the design of the cantilevered installation of the tools, as shown in figure l, it becomes possible to position a second pair of tools, which is differently shaped than the first one, in such a manner, that the opposing jaw carriers which are attached cantilevered on the drive and with axis-parallel shafts, with an interlocking movement, can fulfill a different function, e.g. cutting, perforating, labeling.
If it is desired to use identical tools, and to have them act upon the moving material in the same rhythm, it is indicated to install a second identical unit with cantilevered tool carriers on the same axis-center line, but in minor image. This duo arrangement is noted in figure 1, where the second installation is identified with the same numbers to which 10 was added.
Shown in this application example are two sets of like tools (6,16), which are mounted 180 degrees out of phase on their drives (8,18), such, that while the first set of tools (6a,6b) is on its return stroke, the second, opposite set of tools ( 16a,16b) goes through its active work phase.
In this fashion, it is possible to increase the throughput significantly.
It is possible to use one of the set of tools for other operations. Because of the degree of freedom, which is the result of the cantilevered attachment, it is possible to use tools with different timing. Using servo-motors, the drives can be so controlled, as to make collisions of the tools impossible, even if they travel on identical, even overlapping orbits at different rotational speeds.
Because of the short time needed for the return stroke cycles, it is possible to produce bags, which are shorter than the distance required for their production.
S
A so-called "stripper" can be attached to the tools, tool carriers respectively, freely sticking out of the drive cranks, which strips off product in the seal area by means of two opposing bar type items travelling in the same direction, shortly before the tools close the film tube.
Claims (46)
1. In apparatus for processing elongate material continuously advancing along a processing path by using at least a first pair of cyclically driven tools between which the material passes as it moves along the processing path and which synchronously engage opposite faces of the material and move at the same linear speed as the material when in contact therewith, and return upstream to re-engage the advancing material and repeat the processing cycle, the improvement wherein each tool is cantilevered transversely of the processing path from a tool drive located adjacent a first edge of the processing path and further wherein the tool drive for each tool supports the tool for orbital movement around a drive axis that extends transversely of the processing path such that the orbital movement forms a circle.
2. Apparatus according to claim 1, wherein each tool is mounted on a tool carrier which is supported by said tool drive and has a tool carrier axis about which the tool carrier rotates, and said tool carrier axis orbits around its respective drive axis.
3. Apparatus according to claim 2, wherein said tool carrier axis and said drive axis are parallel.
4. Apparatus according to claim 3, wherein each tool drive comprises a crank arm having a drive end and a free end, each tool carrier is cantilevered at the free end of its respective crank arm, the drive end of the crank arm is supported for rotation about said drive axis, and all of said tool carrier axes and said drive axes are parallel.
5. Apparatus according to claim 4, wherein each tool has a working face adapted to engage the material, and the tool drives maintain the working faces of the tools in a mutually facing attitude throughout revolution of the tool carriers about their respective drive axes.
6. Apparatus according to claim 5, wherein each crank arm is rotatably driven at its drive end by a drive shaft which is journaled for rotation relative to a fixed shaft coaxial with said drive shaft and said drive axis, the tool carrier has a carrier shaft journaled for rotation at the free end of the crank arm for rotation about said tool carrier axis, and a timing mechanism operatively interconnects said carrier shaft and said fixed shaft to effect counter-rotation of the carrier shaft relative to the crank arm at the same angular rate so that the attitude of the tool relative to the processing path is fixed.
7. Apparatus according to claim 6, wherein said timing mechanism comprises an endless member interconnecting said carrier shaft and said fixed shaft.
8. Apparatus according to claim 7, wherein said endless member comprises a toothed belt, and said carrier shaft and said fixed shaft are notched to mate with said toothed belt.
9. Apparatus according to claim 7, wherein said endless member comprises a chain, and said carrier shaft and said fixed shaft have sprockets which mate with said chain.
10. Apparatus according to claim 6, wherein said timing mechanism comprises a gear train.
11. Apparatus according to claim 1, wherein each tool is mounted on a tool carrier, each tool drive comprises a crank arm having a drive end and a free end, each tool earner is cantilevered at the free end of its respective crank arm, and the drive end of the crank arm is supported for rotation about a drive axis that extends transversely of the processing path.
12. Apparatus according to claim 1, further comprising a second pair of cyclically driven tools between which the material passes as it moves along the processing path and which synchronously engage opposite faces of the material and move at the same linear speed as the material when in contact therewith, and return upstream to re-engage the advancing material and repeat the processing cycle, each tool of said second pair being cantilevered transversely of the processing path from a tool drive located adjacent a second edge of the processing path which is opposite said first edge.
13. Apparatus according to claim 12, wherein the drive for each tool of said second pair supports the tool for orbital movement around a drive axis that extends transversely of the processing path.
14. Apparatus according to claim 13, wherein the drive axes for each set of two tools which act on the same face of the material are coaxial so that said two tools of each said set travel in the same orbital path, and wherein the first and second pairs of tools are synchronously operated out of phase so that they engage the material at different times and do not interfere with each other.
15. Apparatus according to claim 14, wherein said first and second pairs of tools are operated independently.
16. Apparatus according to claim 15, wherein said first and second pairs of tools are operated by separate servomotors.
17. Apparatus according to claim 13, wherein each tool is mounted on a tool carrier, each tool drive comprises a crank arm having a drive end and a free end, each tool carrier is cantilevered at the free end of its respective crank arm, and the drive end of the crank arm is supported for rotation about said drive axis.
18. Apparatus according to claim 17, wherein each tool carrier has a tool carrier axis about which the tool carrier rotates, and all of said tool carrier axes and said drive axes are parallel.
19. Apparatus according to claim 18, wherein the drive axes for each set of two tools which act on the same face of the material are coaxial so that said two tools of each said set travel in the same orbital path, and wherein the first and second pairs of tools are synchronously operated out of phase so that they engage the material at different times and do not interfere with each other.
20. Apparatus according to claim 19, wherein each tool has a working face adapted to engage the material, each crank arm is rotatably driven at its drive end by a drive shaft which is journaled for rotation relative to a fixed shaft coaxial with the respective drive shaft and the respective drive axis, each tool carrier has a carrier shaft journaled for rotation at the free end of the respective crank arm for rotation about the respective tool carrier axis, and a timing mechanism operatively interconnects said carrier shaft and said fixed shaft to effect counter-rotation of the carrier shaft relative to the crank arm at the same angular rate so that the attitude of the tool relative to the processing path is fixed, whereby the working faces of each of said pairs of tools remain in a mutually facing attitude throughout revolution of the tool carriers about their respective drive axes.
21. Apparatus according to claim 20, wherein said timing mechanism comprises an endless member interconnecting said carrier shaft and said fixed shaft.
22. Apparatus according to claim 21, wherein said endless member comprises a toothed belt, and said carrier shaft and said fixed shaft are notched to mate with said toothed belt.
23. In apparatus for processing an elongate film tube continuously advancing along a processing path by using at least a first pair of cyclically driven tools between which the tube passes as it moves along the processing path and which synchronously engage opposite faces of the tube and move at the same linear speed as the tube when in contact therewith, and return upstream to re-engage the advancing tube and repeat the processing cycle, the improvement wherein each tool is cantilevered transversely of the processing path from a tool drive located adjacent a first edge of the processing path, wherein each tool is mounted on a tool carrier, each tool drive comprises a crank arm having a drive end and a free end, each tool carrier is cantilevered at the free end of its respective crank arm, and the drive end of the crank arm is supported for rotation about a drive axis that extends transversely of the processing path such that the tool follows a circular path.
24. Apparatus according to claim 23, wherein each tool carrier has a tool carrier axis about which the tool carrier rotates, and all of said tool carrier axes and said drive axes are parallel.
25. Apparatus according to claim 24, wherein each tool has a working face adapted to engage the tube, and the tool drives maintain the working faces of the tools in a mutually facing attitude throughout revolution of the tool carriers about their respective drive axes.
26. Apparatus according to claim 25, wherein each crank arm is rotatably driven at its drive end by a drive shaft which is journaled for rotation relative to a fixed shaft coaxial with said drive shaft and said drive axis, the tool carrier has a carrier shaft journaled for rotation at the free end of the crank arm for rotation about said tool carrier axis, and a timing mechanism operatively interconnects said carrier shaft and said fixed shaft to effect counter-rotation of the carrier shaft relative to the crank arm at the same angular rate so that the attitude of the tool relative to the processing path is fixed.
27. Apparatus according to claim 26, wherein said timing mechanism comprises an endless member interconnecting said carrier shaft and said fixed shaft.
28. Apparatus according to claim 27, wherein said endless member comprises a toothed belt, and said carrier shaft and said fixed shaft are notched to mate with said toothed belt.
29. Apparatus according to claim 23, further comprising a second pair of cyclically driven tools between which the tube passes as it moves along the processing path and which synchronously engage opposite faces of the tube and move at the same linear speed as the tube when in contact therewith, and return upstream to re-engage the advancing tube and repeat the processing cycle, each tool of said second pair being cantilevered transversely of the processing path from a tool drive located adjacent a second edge of the processing path which is opposite said first edge.
30. Apparatus according to claim 29, wherein each tool is mounted on a tool carrier, each tool drive comprises a crank arm having a drive end and a free end, each tool carrier is cantilevered at the free end of its respective crank arm, and the drive end of the crank arm is supported for rotation about a drive axis that extends transversely of the processing path.
31. Apparatus according to claim 30, wherein the drive axes for each act of two tools which act on the same face of the tube are coaxial so that said two tools of each said set travel in the same orbital path, and wherein the first and second pairs of tools are synchronously operated out of phase so that they engage the tube at different times and do not interfere with each other.
32. Apparatus according to claim 31, wherein said first and second pairs of tools are operated independently.
33. Apparatus according to claim 32, wherein said first and second pairs of tools are operated by separate servomotors.
34. Apparatus according to claim 31, wherein each tool carrier has a tool carrier axis about which the tool carrier rotates, and all of said tool carrier axes and said drive axes are parallel.
35. Apparatus according to claim 34, wherein the drive axes for each set of two tools which act on the same face of the tube are coaxial so that said two tools of each said set travel in the same orbital path, and wherein the first and second pairs of tools are synchronously operated out of phase so that they engage the tube at different times and do not interfere with each other.
36. Apparatus according to claim 35, wherein each tool has a working face adapted to engage the tube, each crank arm is rotatably driven at its drive end by a drive shaft which is journaled for rotation relative to a fixed shaft coaxial with the respective drive shaft and the respective drive axis, each tool carrier has a carrier shaft journaled for rotation at the free end of the respective crank arm for rotation about the respective tool carrier axis, and a timing mechanism operatively interconnects said carrier shaft and said fixed shaft to effect counter-rotation of the carrier shaft relative to the crank arm at the same angular rate so that the attitude of the tool relative to the processing path is fixed, whereby the working faces of each of said pairs of tools remain in a mutually facing attitude throughout revolution of the tool carriers about their respective drive axes.
37. Apparatus according to claim 36, wherein said timing mechanism comprises an endless member interconnecting said carrier shaft and said fixed shaft.
38. Apparatus according to claim 37, wherein said endless member comprises a toothed belt, and said carrier shaft and said fixed shaft are notched to mate with said toothed belt.
39. A bag forming and filling apparatus incorporating the processing apparatus of claim 23, which forms bags, dispenses product into the bags and seals them, wherein the tools are sealing tools which form the ends of the bags.
40. A bag forming and filling apparatus incorporating the processing apparatus of claim 29, which forms bags, dispenses product into the bags and seals them, wherein at least said first pair of tools are sealing tools which form the ends of the bags.
41. An apparatus for processing elongate material continuously advancing along a processing path, comprising:
at least a first pair of cyclically driven tools following an orbital movement, between which the material passes as it moves along the processing path, and which synchronously engage opposite faces of the material during a portion of the orbital movement and move at the same linear speed as the material when in contact therewith, and return upstream along the orbital movement to re-engage the advancing material and repeat the processing cycle, wherein each tool is cantilevered on a near end transversely of the processing path from a tool drive located adjacent a near edge of the processing path and further wherein the tool drive for each tool supports the tool for orbital movement around a drive axis that extends transversely of the processing path such that the orbital movement forms a circle; and a pair of passive devices effective during a portion of the orbital movement, each located near a distal end of one of the pair of tools, to affect the position of the distal end.
at least a first pair of cyclically driven tools following an orbital movement, between which the material passes as it moves along the processing path, and which synchronously engage opposite faces of the material during a portion of the orbital movement and move at the same linear speed as the material when in contact therewith, and return upstream along the orbital movement to re-engage the advancing material and repeat the processing cycle, wherein each tool is cantilevered on a near end transversely of the processing path from a tool drive located adjacent a near edge of the processing path and further wherein the tool drive for each tool supports the tool for orbital movement around a drive axis that extends transversely of the processing path such that the orbital movement forms a circle; and a pair of passive devices effective during a portion of the orbital movement, each located near a distal end of one of the pair of tools, to affect the position of the distal end.
42. The apparatus of claim 41, wherein the pair of passive devices is effective during at least all of the portion of the orbital movement.
43. The apparatus of claim 42, wherein the pair of passive devices is effective during at least the time the material is engaged.
44. The apparatus of claim 43, wherein the pair of passive devices includes a spring.
45. The apparatus of claim 44, further comprising a second pair of opposing passive devices, each mounted near the near end of each tool carrier, effective during at least part of the portion of the orbital movement, wherein the second pair of passive devices affects the path of the pair of tools mounted on the carrier.
46. The apparatus of claim 45, further comprising a second pair of cyclically driven tools following a second orbital movement, between which the material passes as it moves along the processing path, and which synchronously engage opposite faces of the material during a portion of the second orbital movement and move at the same linear speed as the material when in contact therewith, and return upstream along the second orbital movement to re-engage the advancing material and repeat the processing cycle, wherein each of the second pair of tools is out of phase with the first pair, and cantilevered on the distal end of the second pair transversely of the processing path from a second tool drive located adjacent the distal edge of the processing path and further wherein the second tool drive for each second pair of tools second drive axis that extends transversely of the processing path such that the orbital movement forms a circle, and a third pair of passive devices effective during a portion of the second orbital movement, each located near the near distal end of one of the second pair of tools, to affect the position of the near end.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29822122U DE29822122U1 (en) | 1998-12-11 | 1998-12-11 | Device for processing continuously moving material |
| DE29822122.5 | 1998-12-11 | ||
| EP99120874.5 | 1999-10-27 | ||
| EP99120874A EP1008525B1 (en) | 1998-12-11 | 1999-10-27 | Device for treating continuously moving material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2291898A1 CA2291898A1 (en) | 2000-06-11 |
| CA2291898C true CA2291898C (en) | 2006-01-24 |
Family
ID=26062068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2291898 Expired - Lifetime CA2291898C (en) | 1998-12-11 | 1999-12-08 | Equipment for the process of continuously feeding packaging material |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2122900A (en) |
| CA (1) | CA2291898C (en) |
| WO (1) | WO2000035757A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4253164B2 (en) * | 2002-05-17 | 2009-04-08 | 株式会社イシダ | Horizontal seal mechanism of bag making and packaging machine and bag making and packaging machine |
| ATE468270T1 (en) * | 2006-06-21 | 2010-06-15 | Ferag Ag | DEVICE FOR PROCESSING CONTINUOUSLY CONVEYED FLAT OBJECTS OR A QUASI ENDLESS STREAM OF MATERIAL |
| CA2681276A1 (en) | 2007-03-28 | 2008-10-02 | Ferag Ag | A device for processing flat products and a method for operating such a device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2900695C2 (en) * | 1979-01-10 | 1985-06-20 | Tetra Pak International AB, Lund | Machine for making packs |
| JP2540117B2 (en) * | 1990-07-31 | 1996-10-02 | 雅夫 福田 | Wrapping machine |
| GB9222107D0 (en) * | 1992-10-21 | 1992-12-02 | Harrison Simpkin Eng Limited | Form,fill and seal packaging |
-
1999
- 1999-12-08 CA CA 2291898 patent/CA2291898C/en not_active Expired - Lifetime
- 1999-12-13 WO PCT/IB1999/002097 patent/WO2000035757A1/en active Application Filing
- 1999-12-13 AU AU21229/00A patent/AU2122900A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CA2291898A1 (en) | 2000-06-11 |
| AU2122900A (en) | 2000-07-03 |
| WO2000035757A1 (en) | 2000-06-22 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20191209 |