WO2002087972A1 - Method and apparatus for making a knot with flexible material wrapped around an article - Google Patents
Method and apparatus for making a knot with flexible material wrapped around an article Download PDFInfo
- Publication number
- WO2002087972A1 WO2002087972A1 PCT/CA2002/000636 CA0200636W WO02087972A1 WO 2002087972 A1 WO2002087972 A1 WO 2002087972A1 CA 0200636 W CA0200636 W CA 0200636W WO 02087972 A1 WO02087972 A1 WO 02087972A1
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- WO
- WIPO (PCT)
- Prior art keywords
- controllable
- end portion
- jaw
- predetermined path
- moving
- Prior art date
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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
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
- B65B13/24—Securing ends of binding material
- B65B13/26—Securing ends of binding material by knotting
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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
- B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
- B65B11/02—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders
- B65B11/025—Wrapping articles or quantities of material, without changing their position during the wrapping operation, e.g. in moulds with hinged folders by webs revolving around stationary articles
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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
- B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
- B65B11/04—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated
- B65B11/045—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated by rotating platforms supporting the articles
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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
- B65B2210/00—Specific aspects of the packaging machine
- B65B2210/14—Details of wrapping machines with web dispensers for application of a continuous web in layers onto the articles
- B65B2210/20—Details of wrapping machines with web dispensers for application of a continuous web in layers onto the articles the web dispenser being mounted on a rotary arm
Definitions
- the present invention is concerned with a method and an apparatus for making a knot with two end portions of flexible material wrapped around an article.
- the articles are wrapped and then the tails are heat-sealed to previously applied layers of film.
- This well known technology is very popular.
- the seal is achieved by heating a heat pad which is brought in contact with the tail and previously applied layers of film.
- the film then melts in order to bond layers together.
- this method has some limitations. When the heat is applied to the film layers to create melting, holes can be created through all layers which remove the water proof protection of the product and/or can damage the product.
- This knotter includes a rotatable twine holder for gripping the primary and secondary portions of twine and holding them in a side-by-side relationship extending along a predetermined path.
- a rotatable billhook is mounted adjacent to the twine holder and positioned to intersect the predetermined path.
- Drive means interconnecting the twine holder and billhook rotate the two elements in timed relation such that during a first cycle of the billhook the twine portions are positioned thereabout, and during a second cycle of the billhook a knot is tied therein.
- the device includes a flexible frame having a base and left and right legs which project away from the base, there being a gap between the two legs.
- the frame carries a post which projects from the base into the gap intermediate the two legs and may be extended or retracted and even withdrawn.
- the legs carry winders which rotate about a common axis. Each winder has a hollow interior, a winding arm located at the gap, and a gripping sleeve remote from the gap.
- DIEHL wherein there is described a heat seal assembly and method for securing stretch-film wrapped about a package, which assembly grasps and aligns two strips of roped film wraps, heats adjacent faces of the roped film sections and thereafter compresses these heated faces to weld them to each other and secure the film wrap about the package.
- An object of the present invention is to provide a method and an apparatus for making a knot with two end portions of flexible material wrapped around an article in a manner that is simpler and more efficient than those provided in prior art.
- a method of making a knot with first and second rope-shaped end portions of flexible material wrapped around an article comprising steps of: (a) guiding the end portions along a predetermined path; (b) (i) nipping the first end portion at a first point of the predetermined path, (ii) nipping the second end portion at a second point of the predetermined path, and (iii) nipping the second end portion at a third point of the predetermined path; (c) cutting the second end portion between the second and third points to obtain a free end thereof; (d) moving the end portions to obtain a loop; (e) releasing the first end portion from the guiding of step (a) to obtain a free end thereof; and (f) inserting the free ends into the loop to form and tighten the knot.
- an apparatus for making a knot with first and second rope-shaped end portions of flexible material wrapped around an article comprising: -a controllable holder for holding a free end of the first end portion; controllable guides for guiding the end portions along a predetermined path; first controllable nippers for nipping the first end portion at a first point of the predetermined path; second controllable nippers for nipping the second end portion at a second point of the predetermined path; third controllable nippers for nipping the second end portion at a third point of the predetermined path; a controllable cutter for cutting the second end portion between the second and third points to obtain a free end thereof; first controllable moving means for moving the end portions to obtain a loop; and second controllable moving means for moving the free ends into the loop to form and tighten the knot.
- Figure 1 is a perspective view of a wrapping machine provided with a first preferred embodiment of the present invention
- figure 2 is a partial perspective view of the wrapping machine provided with the first preferred embodiment according to the present invention in a first operating position;
- figure 3 is a partial perspective view of the wrapping machine provided with the first preferred embodiment according to the present invention in a second operating position;
- figure 4 is a partial perspective view of the wrapping machine provided with the first preferred embodiment according to the present invention in a third operating position;
- figure 5 is a perspective view of an element of .the first preferred embodiment in a first operating position
- figure 6 is a perspective view of the element shown in figure 5 in a second operating position, in relation with the wrapped article;
- figure 7 is a perspective view of the element shown in figures 5 an 6 in a third operating position, in relation with the wrapped article;
- figure 8 is a general perspective view of another element of the first preferred embodiment ;
- figure 9 is a perspective view of the element shown in figure 8 in an operating position, in relation with the rope-shaped end portions of flexible material;
- figure 10 is a perspective view of the element shown in figure 9 in a different operating position
- figure 11 is a perspective view of the element shown in figures 9 and 10 in a different operating position
- figure 12 is a perspective view of the element shown in figures 9 to 11 in a different operating position
- figure 13 is an enlarged view of a detail of figure 12;
- figure 14 is a perspective view of the element shown in figures 9 to in a different operating position;
- figure 15 is a perspective view of the element shown in figures 9 to in a different operating position
- figure 16 is a perspective view of the element shown in figures 9 to in a different operating position
- figure 17 is a perspective view of the element shown in figures 9 to in a different operating position
- figure 18 is a perspective view of the element shown in figures 9 to in a different operating position
- figure 19 is a perspective view of the element shown in figures 9 to in a different operating position
- figure 20 is a perspective view of the element shown in figures 9 to in a different operating position
- figure 21 is a perspective view of the element shown in figures 9 to in a different operating position
- figure 22 is a perspective view of the element shown in figures 9 to in a different operating position
- figure 23 is a perspective view of the element shown in figures 9 to in a different operating position;
- figure 24 is a perspective view of a second preferred embodiment of the present invention.
- figure 25 is a schematic representation of a first step of a method according to the first and second preferred embodiments.
- figure 26 is a schematic representation of a second step of the method initiated in figure 25;
- figure 27 is a schematic representation of a third step of the method initiated in figures 25 and 26;
- figure 28 is a schematic representation of a fourth step of the method initiated in figures 25 to 27;
- figure 29 is a perspective view of a wrapping machine provided with a third preferred embodiment of the present invention.
- figure 30 is a top view of the wrapping machine with the third preferred embodiment without the article, in an operating position
- figure 31 is a top view of the wrapping machine with the third preferred embodiment with the article, in a different operating position;
- figure 32 is a top view of the wrapping machine with the third preferred embodiment, with the article, in a different operating position;
- figure 33 is a top view of the wrapping machine with the third preferred embodiment, with the article, in a different operating position;
- figure 34 is a partial top view of the third preferred embodiment, with the article, in a different operating position;
- figure 35 is a partial top view of the third preferred embodiment, with the article, in a different operating position;
- figure 36 is a partial top view of the third preferred embodiment, with the article, in a different operating position;
- figure 37 is a partial top view o the third preferred embodiment, with the article, in a different operating position;
- figure 38 is a partial top view of the third preferred embodiment, with the article, in a different operation position;
- figure 39 is a perspective view of the third preferred embodiment.
- figure 40 is a partial perspective view of the third preferred embodiment where certain elements thereof have been removed;
- figure 41 is a top view of the third preferred embodiment
- figure 42 is a side view of the third preferred embodiment where certain elements thereof have been removed;
- figure 43 is a front view of the third preferred embodiment
- figure 44 is a perspective view of the third preferred embodiment in a first operating position
- figure 45 is a perspective of the third preferred embodiment in a second operating position
- figure 46 is a perspective view of the third preferred embodiment in a third operating position
- figure 47 is a perspective view of the third preferred embodiment in a fourth operating position
- figure 48 is a perspective view of third preferred embodiment in a fifth operating position
- figure 49 is a perspective view of the third preferred embodiment in a sixth operating position
- figure 50 is a schematic view of the rope-shaped end portions to be knotted according to the third preferred embodiment, in a first operating position;
- figure 51 is a schematic view of the rope-shaped end portions to be knotted according to the third preferred embodiment, in a second operating position;
- figure 52 is a schematic view of the rope-shaped end portions to be knotted according to the third preferred embodiment, in a third operating position
- figure 53 is a schematic view of the rope-shaped end portions to be knotted according to the third preferred embodiment, in a fourth operating position
- figure 54 is a schematic view of the rope-shaped end portions to be knotted according to the third preferred embodiment, in a fifth operating position;
- figure 55 is a schematic view of the remaining rope-shaped end portion once the knot has been completed according to the third preferred embodiment.
- FIG. 1 there is shown a first preferred embodiment of an apparatus according to the present invention within the environment in which it operates. Please find hereunder the numeral list of the components illustrated in figures 1 to 23:
- the apparatus is for making a knot with first and second rope-shaped end portions 11 and 12 of flexible material 10 wrapped around an article 9.
- the first preferred embodiment comprises a controllable holder for holding the free end of the first end portion.
- the holder consists of a gripper comprising first and second jaws 57 and 56.
- the second jaw 56 is movable with respect to the first jaw 57 between a first position where the second jaw 56 operatively rests against the first jaw 57 as shown for example in figure 9 and a second position where the second jaw 56 is away from the first jaw 57 as shown for example in figure 14.
- the gripper also comprises an actuating element which is a top clamp jaw actuator 60 connected to the second jaw 56 for moving it between its first and second positions.
- the apparatus also comprises controllable guides for guiding the end portions 11 and 12 along a predetermined path as shown for example in figure 3.
- the controllable guides comprise a groove-shaped element formed by the first and second jaws 57 and 56 when said second jaw 56 is in its first position to, on the one hand, grip the free end of the first end portion 11 and, on the other hand, guide the second end portion 12 extending between the article 9 and the film delivering carriage 2 as shown for example in figure 3.
- controllable guides also comprise two groove-shaped stops 16 and 27 movable between a first position where the stops are distal from each other as shown in figure 5 and a second position where the stops 16 and 27 are adjacent, as shown in figure 7 to guide the end portions 11 and 12 extending between jaws 57 and 56 and the article 9 as shown in figures 3 and 7, thereby defining the predetermined path between the jaws 57 and 56 and the stops 16 and 27.
- the groove- shaped stops 16 and 27 are mounted on a conveyor side 6 as shown in figure 1.
- the apparatus also comprises first controllable nippers for nipping the first end portion at a point of the predetermined path, and second controllable nippers for nipping the second end portion at a second point of the predetermined path.
- the first and second nippers are made of an assembly.
- the assembly comprises first and second jaws.
- the first jaw is a cylindrical element made of a tapered sleeve 66.
- the second jaw is a finger 69 movable between a first position where an end thereof operatively rests against the tapered sleeve 66 as shown for example in figures 12 and 13 and a second position where the end thereof is away from the tapered sleeve 66 as shown for example in figure 8.
- the assembly also comprises moving means for moving the finger 69 between its first and second positions.
- the moving means comprise first and second cooperating members.
- the first member is a main table 71 having a cavity with a peripheral wall.
- the second member is at least partially mounted within the peripheral, wall of the cavity and rotatable thereabout.
- the second member is a shouldered sleeve 65 having a guiding groove for guiding the finger 69 along a radial direction with respect to the tapered sleeve 66.
- the shouldered sleeve 65 includes a pin connected to the finger 69, a roller 70 connected to the pin and a resilient element for urging the finger 69 towards its second position.
- the finger 69 is pushed away from its second position towards its first position against the resilient member by a rotational movement of the shouldered sleeve 65 with respect to the main table 71 upon a pressure exerted by the peripheral wall on the finger 69 via the pin and the roller 70.
- the apparatus according to the first preferred embodiment also comprises third controllable nippers for nipping the second end portion at a third point of the predetermined path.
- these third nippers are embodied by the gripper which is made of the jaws 57 and 56.
- the apparatus also comprises a controllable cutter for cutting the second end portion 12 between the second and third points of the predetermined path to obtain a free end thereof.
- the controllable cutter is a heated wire cutter.
- An actuator 62 is connected to the controllable cutter for moving the cut wire 59 of the cutter between a first position where the cut wire 59 is in position for cutting the second end portion 12 and a second position where the cut wire 59 is in a position remote from the second end portion.
- the cut wire 59 is a heated cut wire. Heat wire is a well known technology.
- the shouldered sleeve 65 and the main table 71 are provided with a central opening as shown for example in figure 9.
- the tapered sleeve is mounted within the central opening of the shouldered sleeve 65 and the main table 71.
- the tapered sleeve 66 further comprise an actuator 85 for moving the tapered sleeve 66 between a first position where the tapered sleeve 66 projects from the central opening in position for cooperating with the finger 69 and a second position where the tapered sleeve 66 is retracted from the central opening as shown for example in figures 9 and 10.
- the shouldered sleeve 65 has an upper surface provided with a straight off center groove that crosses said upper surface from one side thereof to the other via a peripheral portion of the central opening.
- the off-center groove is sized for receiving the rope-shaped end portions.
- the off-center groove is provided, along a portion thereof extending from the central opening to the periphery of the upper surface, with a bias shoulder 76.
- the assembly further comprises an actuator 15 for moving the shouldered sleeve 65, main table 71 and the tapered sleeve 66 between a first position where the off-center groove of the shouldered sleeve 65 is lower than pre-determined path of the rope-shaped end 11 and 12 and a second position where the off-center groove of the shouldered sleeve 65 is adjacent to the pre-determined path of the rope-shaped end 11 and 12 as shown for example in figure 10 and 11.
- the apparatus according to the first preferred embodiment also comprises controllable moving means for moving the rope-shaped end portions to obtain a loop.
- these first moving means are embodied by the assembly.
- the loop is obtained by rotating the shouldered sleeve 65 with respect to tapered sleeve 66 when the shouldered sleeve 65 and the main table 71 are in their first position as shown in figure 16 thereby looping the free ends around the tapered sleeve 66.
- the tapered sleeve 66 is hollow with an open end.
- the apparatus according to the first preferred embodiment also comprises moving means for moving the free ends of the end portions 11 and 12 into the loop to form and tighten the knot.
- these moving means comprise pair of jaws 72 and 71 movable between a first position where it is in position to grip the free ends of the rope-shaped end portions 11 and 12 once the looping thereof around the tapered sleeve 66 has been performed to a second position where a part of the free ends faces the open end of the tapered sleeve 66 as shown for example in figure 18.
- these moving means also comprise pair of jaws 67 and 68.
- the jaw 68 is movable between a first position where the jaws 67 and 68 are in position to receive the free ends 11 and 12 facing the open end of the tapered sleeve 66 and a second position where the free end are griped with jaws 67 and 68 as shown in figures 18 and 19.
- the jaws 67 and 68 further comprise an actuator 85 for moving the jaws 67 and 68 to a first position where the jaws project from the central opening of the tapered sleeve 66 and a second position where the jaws are retracted from the central opening of the tapered sleeve 66 in order to insert the free ends into the loop as shown for example in figures 19, 20 and 21.
- the knot is tightened using the movement of the shouldered sleeve 65, the main table 71 and the tapered sleeve 66 previously described.
- the method comprises the steps of (a) guiding the end portions 1 and 12 along a predetermined path as shown in figure 3; (b) (i) nipping the first end portion 11 at a first point of the predetermined path as shown in figures 12 and 13, (ii) nipping the second end portion 12 at a second point of the predetermined path as shown in figures 12 and 13, and (iii) nipping the second end portion 12 at a third point of the predetermined path as shown in figures 14 and 15; (c) cutting the second end portion 12 between the second and third points to obtain a free end thereof as shown in figure 15; (d) moving the end portions 11 and 12 to obtain a loop as shown in figure 16; (e) releasing the first end portion 11 from the guiding of step (a) to obtain a free end thereof as shown in figure 14; and (f) inserting the
- step (e) is performed after sub-steps (i) and (ii) and before sub-steps (iii).
- step (d) is performed after step (c) and comprises steps of rotating the free ends around a hollow shaft having an end opening to obtain the loop as shown in figure 16.
- step (f) comprises (iv) gripping and moving the free ends to place portions thereof over the end opening as shown in figures 17 and 18, and (v) gripping and inserting said portions of the free ends into the hollow shaft thereby inserting the free ends into the loop as shown in figures 19 to 21.
- step (a) the end portions are guided in parallel along the predetermined path as shown in figure 3.
- step (c) includes steps of heating a heat wire, and moving the heat wire transversally with respect to the second end portion 12 as shown in figure 15.
- the first end portion 11 of flexible material 10 is already placed within jaws 56 and 57, and the film delivering carriage 2 is in roping configuration.
- the wrapping cycle is started by rotating the film delivering carriage 2 around the article 9 and after the first quarter of revolution of the wrapping arm 7, the film delivering carriage 2 is brought back to full web configuration to fully wrap the article with a web by moving the carriage 2 according to a conventional up and down spiral motion.
- the film delivering carriage 2 is once more brought into rope configuration to ' form the second rope-shaped end portion 12.
- the arm 7 is then stopped at its home position.
- the two ropes are guided by activating the guide actuator 22.
- the clamp actuator 61 is also activated in order to raise the clamp assembly.
- the arm 7 is rotated backward to position the rope 12 in relation to the clamp jaws 56 and 57
- shouldered sleeve 65 with the main table 71 are brought up to position the two end portions 11 and 12 between the tapered sleeve 66 and the finger 69, within the groove of the shouldered sleeve 65 as shown in figure 11.
- the shouldered sleeve 65 is then rotated with a motor 50 and gear 90 until the end portions 11 and 12 are locked between the tapered sleeve 66 and the finger 69 as shown in figures 12 and 13.
- This operation is controlled by counting a predetermined number of teeth on the gear 90 which is a pinion bevel gear and by means of proximity sensor 75.
- the upper jaw 56 is lifted by means of actuator 60 to release the first end portion 11 as shown in figure 14.
- the second end portion 12 placed between the jaws 56 and 57 is grasped when the jaw 56 is moved down as shown in figure 15.
- the cut wire 59 is heated and the heat wire actuator 62 moves the cut wire 59 up to cut the second end portion 12.
- the actuator 62 then brings back the cut wire 59 to its down position.
- Another end portion 88 is then obtained. This end portion 88 extends between the jaws 57 and 56 to the film delivering carriage 2 and will be used as the first end portion of the next wrapping cycle.
- the shouldered sleeve 65 is then rotated according to a predetermined number of teeth with the motor 50 and gear 90 so as to bring the end portions 11 and 12 in position to be gripped with the jaws 72 and 77 which are opened by means of actuator 83, as shown in figure 16.
- the actuator 83 closes the jaws 72 onto 77 to hold the end portions 11 and 12 as shown in figure 17.
- the rotary actuator 51 is then activated to rotate the jaws 72 and 77 and bring the end portion 11 and 12 between the jaws 67 and 68, as shown in figure 18.
- the jaws 67 and 68 are then closed on the end portions 11 and 12 by means of the actuator 92, as shown in figure 19.
- the jaws 72 and 77 are then opened by means of the actuator 83 to free the end portions 11 and 12.
- the end portions 11 and 12 are then drawn downwardly by means of the actuator 85 to form the knot as shown in figure 20.
- the actuator 15 is activated to lower the shouldered sleeve 65 and the main table 71 in order to tighten the knot as shown in figure 21.
- the rotary actuator 51 is brought back to its home position.
- the jaws 67 and 68 are then opened by means of actuator 81 as shown in figure 22.
- the stops 16 and 27 are moved back to their standby position as shown in figure 5 by means of actuator 22. Then the knot rests on the side of the wrapped article 9.
- the shouldered sleeve 65 is rotated back to its home position as shown in figure 23 by means of motor 50 and the home proximity sensor 94 shown in figure 19.
- the clamp actuator 61 is retracted to home position as shown in figure 23.
- the product is conveyed out of the wrapping area by activating conveyor 6. The next wrapping cycle is ready to start.
- FIG 24 there is shown a second preferred embodiment of the invention.
- a first tail of the film is placed in the initial clamp 111.
- the wrapping cycle is started with the film delivering carriage (not shown) in roping configuration. After the first half revolution of the delivering carriage (not shown), it is brought back to full web configuration to fully wrap the article. During the last half revolution of the delivering carriage around the article, the film delivering carriage is brought back into rope configuration to make a second tail.
- a gathering mechanism 105, 106 and 113 gathers the two tails and clamps them at a predetermined position between the knotter head of the apparatus and the wrapped article.
- the knotter head is brought up by means of actuator 112 to position the two tails between a knotting sleeve 107 and the cam clamp 108 within the guide 104.
- the knotting sleeve 107 is then rotated with the motor and gear 102 until the two tails are locked against the knotting sleeve 107 and the cam clamp 108 and then stopped.
- the first tail which is still in the initial clamp 111 is released from it.
- the second tail, which extends from the knotting sleeve 107 to the film delivering carriage is then clamped by means of initial clamp 111.
- the last tail is then cut between the initial clamp 111 and the knotting sleeve 107.
- the initial clamp 111 now holds the first tail of the next cycle.
- the knotting sleeve 107 performs a full revolution under the control of the motor and gear 102 to wrap a portion of the tails around the knotting sleeve 107. When the revolution is completed, the two ends of the tails are gripped by means of tail gripper 109.
- the rotary actuator 101 brings the tail end portions over the wrapped knotting sleeve 107 into the jaws 103 of the tail puller 110. Once the tail ends are in the tail puller jaws, the tail puller 110 is retracting to pull the two tail ends into the core of the knotting sleeve 107. The knotting sleeve 107 is then pulled downward in order to release the portion wrapped around it. The gathering clamps 105, 106 and 113 release the rope portions. The knot is now formed between the article and the tail puller. The tail puller releases the two tail ends and the knot is freed. All the mechanism then returns to the initial position and the next cycle is ready to start.
- FIG 25 there are shown the steps of the method for forming a knot by means of first preferred embodiment shown in figures 1 to 23, and second embodiment shown in figure 24.
- the tails are guided along a predetermined path.
- figures 26 and 27 a loop is formed.
- the free ends of the tails are pulled into the loop to form and tighten the knot.
- FIG. 29 to 54 there is shown a third preferred embodiment of the present invention. Please find hereunder the numeral list of the components illustrated in figures 29 to 48:
- the operator places the rope 264 delivered by the carriage 202 into the table clamp 207 as shown in figure 30.
- An article 204 to be wrapped is brought up unto the rotary table 206 as shown in figure 31.
- the cycle is started and the article 204 is wrapped by means of a conventional method.
- the film of the film roll 203 is turned from a web into a rope 265 by means of the carriage 202.
- the table 206 is then stopped at approximately 1/8 of a turn from its home position as shown in figures 32 to 34.
- the knotter head is brought from its home position to its knotting position, as shown for example in figure 33, by means of gear motor 233, the linear bearing 227 and guide shaft 228 shown in figure 39.
- gear motor 233 As the knotter head is moved to its knotting position, the two ropes 264 and 265 are automatically guided in the rotation head 242, the rope 264 in the bottom slot and the rope 265 in the top slot.
- the rope 264 is then clamped by means of gear motor 235 that drives a shaft 246 on which a cam 224 produces a lifting movement via the clamp jaw 219 by means of a lifter arm 221.
- the movable jaw 243 grips the rope 264 as it hits clamp jaw trigger 214.
- the clamp motion for clamping the rope 264 is from a down position to an up position.
- the rope 265 is also clamped by means of a gear motor 235 that activates a shaft on which a cam 324 produces a lifting movement via a clamp jaw by means of lifter 321.
- a movable jaw grips the rope 265 as it hits the clamp jaw trigger 314.
- the motion for clamping the rope 265 is from a top position to a down position. Both motions are symmetrical and linked with a chain 254 and sprockets 255 and 355 as shown in figure 42.
- the rope 265 is simultaneously clamped a second time by means of clamp jaw 237 mounted on the transfer arm 212 by activating clamp solenoid 239.
- the heat wire 262 is activated to cut the rope 265 between the transfer clamp frame 241 and the clamp jaw.
- gear motor 236 is activated to rotate the rotation head 242. After a full turn thereof, a loop is obtained.
- the gear motor 235 is activated again to drive the shafts 246 and 346 on which cams 225 and 325 are respectively mounted. As the cams 225 and 325 are turning, a pushing motion is produced by means of rack pushpin 245 and another rack pushpin.
- the linear motion of rack pushpin 245 and the other rack pushpin is transformed into a rotary motion by means of racks 217 and 317 and pinions 220 and 320.
- the rotary motion induces a rotation of push arms 215 and 315 with clamp jaw 219 and another clamp jaw.
- the push arms 215 and 315 push the two ends of the ropes 264 and 265 into the loop previously produced by the rotation head 242.
- the knotter head then moves backward by means of gear motor 233.
- the transfer arm cam follower 253 mounted on the transfer arm lever 252 hits the transfer arm trigger 222.
- the transfer arm trigger 222 is spring loaded to activate the transfer arm lever 252 only upon the backward movement of the knotter head and not when it moves forward.
- the transfer arm cam follower 253 follows a path that makes the transfer arm 212 move to the other side of the knotter head as shown in figure 36.
- the rope 265 which is clamped by the transfer clamp 241 is now pulled to the other side of the knotter head.
- the transfer clamp 241 extends over the table clamp 207 and the table clamp trigger 263 opens a table clamp movable jaw that is spring loaded.
- the rope 265 is simultaneously engaged in the table clamp 207 and released from the transfer clamp 241 as shown in figure 37.
- the transfer arm cam follower 253 leaves the transfer arm trigger path and is brought back to its home position.
- the rotary table can now complete the last 1/8 of revolution to its home position and the wrapped article 204 can be removed.
- the rope 265 becomes the rope 264 for the next cycle.
- Figure 50 illustrates the first step where at the end of the wrapping cycle, the first rope 264 is held by a table clamp and the second rope 265 extends between the -article and the carriage.
- the ropes 264 and 265 are placed in parallel to each other.
- the first rope 264 is on the bottom.
- the knotter head is brought forward in position and the two ropes 264 and 265 slide in their appropriate slots in a rotating head.
- step 2 where once in position, the knotter head clamps the two ropes 264 and 265 one on each side of the head.
- the second rope 265 is simultaneously clamped by the transfer arm clamp and is cut between rotation head clamp and the transfer arm.
- step 3 where the rotation head performs a complete revolution which produces a loop between the two ropes 264 and 265.
- step 4 where the clamp push arm pushes the two free ends of the ropes 264 and 265 into the loop as it rotates.
- step 5 where the knotter head clamp releases the ropes and the knotter head moves backward to its home position.
- step 6 where as the knotter head moves back, the transfer arm brings the remaining rope 265 into the table clamp jaw and releases it to finish its movement to its home position.
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Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02727075A EP1383681A1 (en) | 2001-05-01 | 2002-04-25 | Method and apparatus for making a knot with flexible material wrapped around an article |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2,345,862 | 2001-05-01 | ||
CA 2345862 CA2345862A1 (en) | 2001-05-01 | 2001-05-01 | Knotter and method for forming a knot |
CA2,357,135 | 2001-09-07 | ||
CA 2357135 CA2357135A1 (en) | 2001-09-07 | 2001-09-07 | Knotter and method for forming a knot |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002087972A1 true WO2002087972A1 (en) | 2002-11-07 |
Family
ID=25682552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CA2002/000636 WO2002087972A1 (en) | 2001-05-01 | 2002-04-25 | Method and apparatus for making a knot with flexible material wrapped around an article |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1383681A1 (en) |
WO (1) | WO2002087972A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104071654A (en) * | 2014-07-11 | 2014-10-01 | 西安电子科技大学 | Automatic adhesive tape winding device for automobile front-row belt buckle assembly |
CN112874848A (en) * | 2021-01-11 | 2021-06-01 | 金智峰 | Multi-axial automatic rotating mechanism of packaging machine |
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GB1095000A (en) * | 1964-09-22 | 1967-12-13 | Francois Aubery | Improvements in or relating to apparatus for binding packages |
US3570553A (en) | 1968-08-30 | 1971-03-16 | Battelle Development Corp | Tying mechanism |
US3752517A (en) | 1971-12-20 | 1973-08-14 | Ball Brothers Res Corp | Tying device |
US3915483A (en) | 1974-07-08 | 1975-10-28 | Bunn Co B | Flexible drawback assembly for package tying machine |
US4223516A (en) | 1977-06-21 | 1980-09-23 | Sperry Corporation | Knotting mechanism |
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US4765082A (en) | 1987-08-31 | 1988-08-23 | Nicholas Ben A | Fishhook tying tool |
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US4872240A (en) | 1987-10-26 | 1989-10-10 | Clement F. Marley | Steel knot for ropes |
US5088270A (en) | 1990-12-31 | 1992-02-18 | Mima Incorporated | Film-tail heat sealing system |
US5197217A (en) | 1992-01-21 | 1993-03-30 | Duane S. Colby | Line to lure rigging system |
US5236232A (en) | 1992-07-29 | 1993-08-17 | Du-Bro Products, Inc. | Knot typing device and method |
US5240295A (en) | 1992-02-27 | 1993-08-31 | Spencer Donald R | Knot tying device |
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US5787691A (en) | 1995-06-08 | 1998-08-04 | Newtec International S.A. | Apparatus for wrapping articles in plastic film |
US5802810A (en) | 1997-06-28 | 1998-09-08 | Illinois Tool Works Inc. | Method and apparatus for wrapping and securing stretch film about a load |
US5971447A (en) | 1998-04-15 | 1999-10-26 | Steck, Iii; William F | Fisherman's knot tying device |
US6143006A (en) | 1998-04-18 | 2000-11-07 | Chan; Kwan-Ho | Apparatus and method for tying and tensioning knots |
US6195968B1 (en) | 1999-07-08 | 2001-03-06 | Wulftec International Inc. | Apparatus for wrapping a load |
-
2002
- 2002-04-25 WO PCT/CA2002/000636 patent/WO2002087972A1/en not_active Application Discontinuation
- 2002-04-25 EP EP02727075A patent/EP1383681A1/en not_active Withdrawn
Patent Citations (20)
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---|---|---|---|---|
GB1095000A (en) * | 1964-09-22 | 1967-12-13 | Francois Aubery | Improvements in or relating to apparatus for binding packages |
US3570553A (en) | 1968-08-30 | 1971-03-16 | Battelle Development Corp | Tying mechanism |
US3752517A (en) | 1971-12-20 | 1973-08-14 | Ball Brothers Res Corp | Tying device |
US3915483A (en) | 1974-07-08 | 1975-10-28 | Bunn Co B | Flexible drawback assembly for package tying machine |
US4223516A (en) | 1977-06-21 | 1980-09-23 | Sperry Corporation | Knotting mechanism |
US4420177A (en) | 1979-06-22 | 1983-12-13 | Sperry Corporation | Knotters |
US4795201A (en) | 1986-12-15 | 1989-01-03 | Veb Kombinat Frotschritt Landmaschinen | Knotting method for baler |
US4765082A (en) | 1987-08-31 | 1988-08-23 | Nicholas Ben A | Fishhook tying tool |
US4872240A (en) | 1987-10-26 | 1989-10-10 | Clement F. Marley | Steel knot for ropes |
US5088270A (en) | 1990-12-31 | 1992-02-18 | Mima Incorporated | Film-tail heat sealing system |
US5197217A (en) | 1992-01-21 | 1993-03-30 | Duane S. Colby | Line to lure rigging system |
US5240295A (en) | 1992-02-27 | 1993-08-31 | Spencer Donald R | Knot tying device |
US5236232A (en) | 1992-07-29 | 1993-08-17 | Du-Bro Products, Inc. | Knot typing device and method |
US5787691A (en) | 1995-06-08 | 1998-08-04 | Newtec International S.A. | Apparatus for wrapping articles in plastic film |
US5878555A (en) | 1995-06-08 | 1999-03-09 | Newtec International S.A | Apparatus for wrapping articles in plastic film |
US5728109A (en) | 1997-04-08 | 1998-03-17 | Ethicon Endo-Surgery, Inc. | Surgical knot and method for its formation |
US5802810A (en) | 1997-06-28 | 1998-09-08 | Illinois Tool Works Inc. | Method and apparatus for wrapping and securing stretch film about a load |
US5971447A (en) | 1998-04-15 | 1999-10-26 | Steck, Iii; William F | Fisherman's knot tying device |
US6143006A (en) | 1998-04-18 | 2000-11-07 | Chan; Kwan-Ho | Apparatus and method for tying and tensioning knots |
US6195968B1 (en) | 1999-07-08 | 2001-03-06 | Wulftec International Inc. | Apparatus for wrapping a load |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104071654A (en) * | 2014-07-11 | 2014-10-01 | 西安电子科技大学 | Automatic adhesive tape winding device for automobile front-row belt buckle assembly |
CN112874848A (en) * | 2021-01-11 | 2021-06-01 | 金智峰 | Multi-axial automatic rotating mechanism of packaging machine |
CN112874848B (en) * | 2021-01-11 | 2023-05-09 | 浙江瑞安华联药机科技有限公司 | Multi-axial automatic rotating mechanism of packaging machine |
Also Published As
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---|---|
EP1383681A1 (en) | 2004-01-28 |
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