CA2345862A1 - Knotter and method for forming a knot - Google Patents
Knotter and method for forming a knot Download PDFInfo
- Publication number
- CA2345862A1 CA2345862A1 CA 2345862 CA2345862A CA2345862A1 CA 2345862 A1 CA2345862 A1 CA 2345862A1 CA 2345862 CA2345862 CA 2345862 CA 2345862 A CA2345862 A CA 2345862A CA 2345862 A1 CA2345862 A1 CA 2345862A1
- Authority
- CA
- Canada
- Prior art keywords
- knotter
- clamp
- rope
- head
- transfer arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
Description
. CA 02345862 2001-05-O1 S
KNOTTER AND METHOD FOR FORMING A KNOT
Field of the invention The present invention relates to a knotter and to the method for operating the same Background of the invention It is well known in the art that many times, products are conventionally wrapped with stretch film and nothing else is required other than a brush to wipe the last tail. In fact, when stretch film is used, the static generated as it is stretched and the tacky material added to one side of the film makes the tail stick to the layer previously applied. This method is perfect when the product is shipped in a close trailer or container but is inadE:quate when the product is shipped on an open trailer or stored outside, because the tails are subject to getting loose as they are exposed to wind or bad weather.
In other applications, the products are wrapped with netting material. This allows product like fruit or vegetable to breathe during shipping. This kind of wrapping material does not have a tacky side nor creates static when it is stretched. To keep the product wrapped, it is mandalfory to hold the tail otherwise it will automatically unwind and expose the product as it will be unwrapped.
Blood knots are well known in the art.
Therefore, there is a need for a knotter and mE~thod for forming a knot.
Summary of the invention The object of the present invention is to provide a device which satisfies some of the above-mentioned needs and which is thus an improvement over the above-discussed prior art.
KNOTTER AND METHOD FOR FORMING A KNOT
Field of the invention The present invention relates to a knotter and to the method for operating the same Background of the invention It is well known in the art that many times, products are conventionally wrapped with stretch film and nothing else is required other than a brush to wipe the last tail. In fact, when stretch film is used, the static generated as it is stretched and the tacky material added to one side of the film makes the tail stick to the layer previously applied. This method is perfect when the product is shipped in a close trailer or container but is inadE:quate when the product is shipped on an open trailer or stored outside, because the tails are subject to getting loose as they are exposed to wind or bad weather.
In other applications, the products are wrapped with netting material. This allows product like fruit or vegetable to breathe during shipping. This kind of wrapping material does not have a tacky side nor creates static when it is stretched. To keep the product wrapped, it is mandalfory to hold the tail otherwise it will automatically unwind and expose the product as it will be unwrapped.
Blood knots are well known in the art.
Therefore, there is a need for a knotter and mE~thod for forming a knot.
Summary of the invention The object of the present invention is to provide a device which satisfies some of the above-mentioned needs and which is thus an improvement over the above-discussed prior art.
2 In accordance with the invention, the above object is achieved by a knotter for forming a knot between first and second ropes of a wrapping material, the knotter comprising:
clamping means for clamping portions of the first and second ropes;
cutting means for cutting the second rope; and moving means for moving portions of the rod>es that are clamped by the clamping, means for forming the knot.
Also according to another aspect of the invention, there is provided a method for forming a knot between first and second ropes of a wrapping material, the method comprising the steps of a) clamping portions of the first and second ropes;
b) cutting the second rope; and c) moving portions of the ropes that are clamped in step a) for forming the knot.
The invention and its advantages will be better understood by reading the following non-restrictive description of preferred embodiments thereof, made with reference to the accompanying drawings.
Brief description of the drawings Fig. 1 is an isometric view of the wrapping machine with the knotter.
Fig. 2 is an isometric view of the knotter shown at knotting position.
Fig. 3 is an isometric view of the knotter shown at knotting position without the transfer clamp.
Fig. 4 is a top view of the knotter shown at knotting position.
clamping means for clamping portions of the first and second ropes;
cutting means for cutting the second rope; and moving means for moving portions of the rod>es that are clamped by the clamping, means for forming the knot.
Also according to another aspect of the invention, there is provided a method for forming a knot between first and second ropes of a wrapping material, the method comprising the steps of a) clamping portions of the first and second ropes;
b) cutting the second rope; and c) moving portions of the ropes that are clamped in step a) for forming the knot.
The invention and its advantages will be better understood by reading the following non-restrictive description of preferred embodiments thereof, made with reference to the accompanying drawings.
Brief description of the drawings Fig. 1 is an isometric view of the wrapping machine with the knotter.
Fig. 2 is an isometric view of the knotter shown at knotting position.
Fig. 3 is an isometric view of the knotter shown at knotting position without the transfer clamp.
Fig. 4 is a top view of the knotter shown at knotting position.
3 Fig. 5 is a sectional view of the knotter shown at knotting position.
Fig. 6 is a side view of the knotter.
Fig. 7 is a top view of a wrapping machine comprising a knotter. The machine is shown ready to receive a product to be wrap.
Fig. 8 is a top view of a wrapping machine comprising a knotter. The machine is shown with a product to be wrap on the table.
Fig. 9 is a top view of a wrapping machine comprising a knotter. The machine is shown with the product being wrapped and ready to be knotted.
Fig. 10 is a top view of a wrapping machine comprising a knotter. The machine is shown with the knotter in knotting position.
Fig. 11 is a top view of a wrapping machine comprisiing a knotter shown after the product is wrapped with the knotter at home position.
Fig. 12 is a top view of a wrapping machine comprising a knotter shown with the knotter at knotting position.
Fig. 13 is a top view of a wrapping machine comprising a knotter shown with the transfer arm at the transferred position as the knolaer is retracting to its home position.
Fig. 14 is a top view of a wrapping machine comprising a knotter shown with the transfer arm at the transferred position transferring the rope into the table clamp as the knotter is still retracting to its home position.
Fig. 6 is a side view of the knotter.
Fig. 7 is a top view of a wrapping machine comprising a knotter. The machine is shown ready to receive a product to be wrap.
Fig. 8 is a top view of a wrapping machine comprising a knotter. The machine is shown with a product to be wrap on the table.
Fig. 9 is a top view of a wrapping machine comprising a knotter. The machine is shown with the product being wrapped and ready to be knotted.
Fig. 10 is a top view of a wrapping machine comprising a knotter. The machine is shown with the knotter in knotting position.
Fig. 11 is a top view of a wrapping machine comprisiing a knotter shown after the product is wrapped with the knotter at home position.
Fig. 12 is a top view of a wrapping machine comprising a knotter shown with the knotter at knotting position.
Fig. 13 is a top view of a wrapping machine comprising a knotter shown with the transfer arm at the transferred position as the knolaer is retracting to its home position.
Fig. 14 is a top view of a wrapping machine comprising a knotter shown with the transfer arm at the transferred position transferring the rope into the table clamp as the knotter is still retracting to its home position.
4 Fig. 15 is a top view of a wrapping machine comprising a knotter shown with the transfer arm and the knotter back to home position.
Fig. 16 is an isometric view of the knotter shown at knotting position.
Fig. 17 is an isometric view of the knotter shown with the cams turning resulting the clamp motion to grab the ropes.
Fig. 18 is an isometric view of the knotter showing them clamping position.
Fig. 19 is an isometric view of the knotter showing thE: rotating head in rotation.
Fig. 20 is an isometric view of the knotter showing rogation guide in rotation as the cam are pushing on the rack push pin.
Fig. 21 is an isometric view of the knotter shown with the cam full revolution completed.
Fig. 22 is a schematic representation of the steps of the method for forming a knot according to a preferred embodiment of the invention.
Description of the preferred embodiments In the following description, the same numerical references refer to similar elements. The embodiments shown in the figures are preferred.
Moreover, although the present invention was primarily designed for use with a film wrapping machine for wrapping purposes, it could be used with other types of objects of different fields for other purposes., such as braiding purposes for example, as apparent to a person skilled in the art. For this reason, expressions such as "wrapping" andlor "knotting" and any other references andlor other expressions equivalent thereto should not be taken as to limit the ~ CA 02345862 2001-05-O1 scope of the present invention and include all other objects with which the present invention could be used and may be useful.
In addition, although the preferred embodiment of the knotter as shown
Fig. 16 is an isometric view of the knotter shown at knotting position.
Fig. 17 is an isometric view of the knotter shown with the cams turning resulting the clamp motion to grab the ropes.
Fig. 18 is an isometric view of the knotter showing them clamping position.
Fig. 19 is an isometric view of the knotter showing thE: rotating head in rotation.
Fig. 20 is an isometric view of the knotter showing rogation guide in rotation as the cam are pushing on the rack push pin.
Fig. 21 is an isometric view of the knotter shown with the cam full revolution completed.
Fig. 22 is a schematic representation of the steps of the method for forming a knot according to a preferred embodiment of the invention.
Description of the preferred embodiments In the following description, the same numerical references refer to similar elements. The embodiments shown in the figures are preferred.
Moreover, although the present invention was primarily designed for use with a film wrapping machine for wrapping purposes, it could be used with other types of objects of different fields for other purposes., such as braiding purposes for example, as apparent to a person skilled in the art. For this reason, expressions such as "wrapping" andlor "knotting" and any other references andlor other expressions equivalent thereto should not be taken as to limit the ~ CA 02345862 2001-05-O1 scope of the present invention and include all other objects with which the present invention could be used and may be useful.
In addition, although the preferred embodiment of the knotter as shown
5 comprises various components as listed hereiinbelow, not all of these components are necessarily essential to the invention and thus should not be taken in their restrictive sense, i.e. should not be taken as to limit the scope of the present invention. It is to be understood, as also apparent to a person skilled in the art, that other suitable components and cooperations thereinbetween may be used for the film wrapping machine and knotter used therewith according to the present invention, as will be explained hereinafter, without departing from the scope of the invention.
Moreover, expressions such as "film" and "knot", as well as any equivalent expressions andlor compound words thereof, may be~ used interchangeably in the context of the present description. The samE applies for any other mutually equivalent expressions, such as "web" and "knot" for example, as also apparent to a person skilled in the art.
Furthermore, it is to be understood that thE: expressions "film", "web", "rope", etc., as used in the context of the present description refers to various different objects which may be used with the present invention, as also apparent to a person skilled in the art.
The knotter according to the preferred embodiment of the invention as shown in the accompanying drawings is a device that is used for tying a knot at the end of the wrapping cycle. A main purpose of they knotter is to get rid of those loose tails on wrapped products. It preferably ties together the first and the last tails leaving thus no loose tail.
~ CA 02345862 2001-05-O1
Moreover, expressions such as "film" and "knot", as well as any equivalent expressions andlor compound words thereof, may be~ used interchangeably in the context of the present description. The samE applies for any other mutually equivalent expressions, such as "web" and "knot" for example, as also apparent to a person skilled in the art.
Furthermore, it is to be understood that thE: expressions "film", "web", "rope", etc., as used in the context of the present description refers to various different objects which may be used with the present invention, as also apparent to a person skilled in the art.
The knotter according to the preferred embodiment of the invention as shown in the accompanying drawings is a device that is used for tying a knot at the end of the wrapping cycle. A main purpose of they knotter is to get rid of those loose tails on wrapped products. It preferably ties together the first and the last tails leaving thus no loose tail.
~ CA 02345862 2001-05-O1
6 Numerical list of the components illustrated in the accompanying drawings 1- Towe r 2- Carriage 3- Film roll 4- Product to be wrapped 5- Machine base 6- Rotary table
7- Table clamp
8- Knotter base
9- Knotter head
10-Knotter head (9) out position
11-Frame plate
12-Transfer arm
13-Transfer arm link
14-Clamp jaw trigger
15-Clamp push arm
16-Spring cage
17- Rack
18-Transfer arm base
19-Clamp jaw
20-Pinion
21-Clamp lifter arm
22-Transfer arm trigger
23-Rotation head drive shaft
24-Clamp lifter cam
25-Clamp rotation cam
26-Trigger base
27-Linear bearing
28-Guide shaft
29-Proximity sensor
30-Sprocket
31-Chain x w
32-Gear motor support
33-Forwardlreverse gear motor
34-Bracket
35-Cam rotation gear motor
36-Rotation head gear motor
37-Transfer clamp jaw
38-Clamp roller guide
39-Clamp solenoid
40-Solenoid rod
41-Transfer clamp frame
42-Rotation head
43-Movable jaw
44-Rack push pin guide
45-Rack push pin
46-Cam drive shaft
47-Movable jaw shaft
48-Movable jaw spring (not showed)
49-Clamp lift spring (not showed)
50-Rack spring (not showed)
51-Heat wire holder
52-Transfer arm lever
53-Transfer arrn cam follower
54-Chain
55-Drive sprocket
56-Idler sprocket
57-Drive pulley
58-Idler pulley
59-Belt
60-Rotation head guide
61-Transfer arm pinion
62-Heat wire
63-Table clamp trigger I I' r
64-First rope
65-Last rope
66-Knot
67-Transfer clamp (41 ) out position
68-Knotter (9) rope transfer position
69-Table clamp movable jaw (not shown) 111- Frame plate 114- Clamp jaw trigger 115- Clamp push arm 117- Rack 119- Clamp jaw 120- Pinion 121- Clamp lifter arm 124- Clamp lifter cam 125- Clamp rotation cam 143- Movable jaw 145- Rack push pin 146- Cam drive shaft 148- Movable jaw spring 155- Sprocket According to a preferred embodiment of the invention, the method for operating the knotter in order to tie a knot comprises the following steps:
Step 1 - At the end of the wrapping cycle, the first tail held by the cable clamp and the last rope going from the product to the carriage are placed parallel to each other. 'The first rope being on the bottom. The knotter head is brought forward into position and the two ropes are entering in their appropriate slot in the rotating head.
' CA 02345862 2001-05-O1 a Step 2 - Once in position, the knotter head clamps the two ropes, one on each side of the head. The last roped is simultaneously clamped by the transfer arm clamp and is cut between the rotation head's clamps and the transfer arm.
Step 3 - The rotation head is activated and makes one complete revolution which creates a loop between the two tails:
Step 4 - The clamp push arm then pushes the two tails into the loop as it rotates.
Step 5 - The knotter head's clamps release the tails and the knotter head starts moving backwards to home poaition.
Step 6 - As the knotter moves back, the transfer arm brings the new tail into the table clamp's jaw and release's it to finish its movement to home position.
To start a new cycle, an operator places a rope (64) delivered by the carriage (2) into the table clamp (7} as shown in fig. 7. A product (4) to be wrapped is brought up onto the rotary table (6) as ;>hown in fig. 8. The cycle is started and the product (4) is wrapped using a conventional method. During the last table (6) revolution, a second rope (65) is made as the film web (3) exit the carriage (2). The table (6) is then stopped at approxiimately 118 of a turn from its home position as shown in figs. 9 and 11.
The knotter head is brought from its home position (9) to its knotting position (10) using the gear motor (33), the linear guide bearing (27) and guide shaft (28) as shown in figs.10 and 12. As the knotter head is moved forward, the two ropes (64,65) are automatically guided in the rotation head (42), the rope (64) in the bottom slot and the rope (65) in the top slot. The rope (64) is then clamped using a gear motor (35) that is activating a shaft (46) on which a cam (24) creates ~a a lifting movement of the clamp jaw (19) using a lifter (21 ). As the clamp jaw (19) is moved up, the movable jaw (43) closes on the roped (64) as it hits the clamp jaw trigger (14). The clamp motion for the rope (64) is from the bottom up. The rope (65} is also clamped using the gear motor (35) that is activating a shaft (146) on 5 which a cam (124) creates a lifting movement of the clamp jaw (119) using a lifter (121). As the clamp jaw (119) is moved down, the movable jaw (143) closes on the rope (65} as it hits the clamp jaw trigger (114). Tlhe clamp motion for the rope (65) is from the top down. Both motions are symmetrical and linked with a chain (54) and sprockets (55-155) as shown in fig. 5. The rope (65) is simultaneously 10 clamped a second time with the clamp jaw (37) mounted on the transfer arm (12) using the clamp solenoid (39). After being clamped, the heat wire (62) is activated to cut the rope (65) between the transfer clamp frame (41 ) and the clamp jaw (119). Then, the gear motor (36) is activated to maker the rotation head (42) turn.
After the full turn, a loop is created. The gear motor (35) is reactivated to drive the shafts (46-146) on which are each mounted a carn (25-125). As the cams (25-125) are turning, they are creating a push motion using the rack pushpin (45-145). The linear motion of the rack pushpin (45-145;) is transformed into a rotary motion using a rack (17-117) and pinion (20-120). 1'he rotary motion makes the two clamps push arm (15-115) rotate with the two clamp jaws (19-119). The push arms (15-115) push the two ends of the ropes (64--65) info the loop previously created with the rotation head (42). After the rope tails are in the loop, the action of the cams (25-125) brings the push arms (15-115) at their initial position leaving the tails of the ropes (64-65) in the loop. Simultaneously, the action of the cam (24-124} brings the clamps jaws (19-119) back at their initial position. As the clamps jaws (19-119) are moved back, the ropes (E~4-65) are released from the movable jaws (43-143) using the springs (48-148). The knot (66) is now made and is free from the knotter head (10). It required one complete shaft (46-146) and cams (24-124-25-125) revolution to accomplish all the movements.
The knotter head then moves backward using the gear motor (33). As it is moving backward, the transfer arm cam follower (~i3) mounted on the transfer arm lever (52) hits the transfer arm trigger (22). The transfer arm trigger (22) is spring loaded to activate the transfer arm lever (52) only on the backward movement of the knotter head and not when it moves forward. As it hits the transfer arm trigger (22), the transfer arm cam follower (53) follows a path that makes the transfer arm (12) move to the other side of the knotter head as shown in fig. 13. The rope (65), which is clamped into the transfer clamp (41 ), is now pulled to the other side of the knotter head. As the knotter head keeps moving backwards, the transfer clamp (41 ) passes over the table clamp (7) and the table clamp trigger (63) opens the table clamp movable jaw (69) that is spring loaded.
The rope (65) is simultaneously engaged in the table clamp (7) and released from the transfer arm clamp (41 ) as shown in fig. 14. As the backward movement of the knotter head is completed, the transfer arm cam followers (53) exits the transfer arm trigger (22) path and springs back to horse position.
The rotary table can now complete the last 1/8 of revolution to its home position in order to remove the wrapped product (4). The rope (65) now becomes the rope (64) to start a new cycle.
Of course, numerous modifications could be rnade to be above-described embodiments without departing from the scope of the invention as apparent to a person skilled in the art.
Step 1 - At the end of the wrapping cycle, the first tail held by the cable clamp and the last rope going from the product to the carriage are placed parallel to each other. 'The first rope being on the bottom. The knotter head is brought forward into position and the two ropes are entering in their appropriate slot in the rotating head.
' CA 02345862 2001-05-O1 a Step 2 - Once in position, the knotter head clamps the two ropes, one on each side of the head. The last roped is simultaneously clamped by the transfer arm clamp and is cut between the rotation head's clamps and the transfer arm.
Step 3 - The rotation head is activated and makes one complete revolution which creates a loop between the two tails:
Step 4 - The clamp push arm then pushes the two tails into the loop as it rotates.
Step 5 - The knotter head's clamps release the tails and the knotter head starts moving backwards to home poaition.
Step 6 - As the knotter moves back, the transfer arm brings the new tail into the table clamp's jaw and release's it to finish its movement to home position.
To start a new cycle, an operator places a rope (64) delivered by the carriage (2) into the table clamp (7} as shown in fig. 7. A product (4) to be wrapped is brought up onto the rotary table (6) as ;>hown in fig. 8. The cycle is started and the product (4) is wrapped using a conventional method. During the last table (6) revolution, a second rope (65) is made as the film web (3) exit the carriage (2). The table (6) is then stopped at approxiimately 118 of a turn from its home position as shown in figs. 9 and 11.
The knotter head is brought from its home position (9) to its knotting position (10) using the gear motor (33), the linear guide bearing (27) and guide shaft (28) as shown in figs.10 and 12. As the knotter head is moved forward, the two ropes (64,65) are automatically guided in the rotation head (42), the rope (64) in the bottom slot and the rope (65) in the top slot. The rope (64) is then clamped using a gear motor (35) that is activating a shaft (46) on which a cam (24) creates ~a a lifting movement of the clamp jaw (19) using a lifter (21 ). As the clamp jaw (19) is moved up, the movable jaw (43) closes on the roped (64) as it hits the clamp jaw trigger (14). The clamp motion for the rope (64) is from the bottom up. The rope (65} is also clamped using the gear motor (35) that is activating a shaft (146) on 5 which a cam (124) creates a lifting movement of the clamp jaw (119) using a lifter (121). As the clamp jaw (119) is moved down, the movable jaw (143) closes on the rope (65} as it hits the clamp jaw trigger (114). Tlhe clamp motion for the rope (65) is from the top down. Both motions are symmetrical and linked with a chain (54) and sprockets (55-155) as shown in fig. 5. The rope (65) is simultaneously 10 clamped a second time with the clamp jaw (37) mounted on the transfer arm (12) using the clamp solenoid (39). After being clamped, the heat wire (62) is activated to cut the rope (65) between the transfer clamp frame (41 ) and the clamp jaw (119). Then, the gear motor (36) is activated to maker the rotation head (42) turn.
After the full turn, a loop is created. The gear motor (35) is reactivated to drive the shafts (46-146) on which are each mounted a carn (25-125). As the cams (25-125) are turning, they are creating a push motion using the rack pushpin (45-145). The linear motion of the rack pushpin (45-145;) is transformed into a rotary motion using a rack (17-117) and pinion (20-120). 1'he rotary motion makes the two clamps push arm (15-115) rotate with the two clamp jaws (19-119). The push arms (15-115) push the two ends of the ropes (64--65) info the loop previously created with the rotation head (42). After the rope tails are in the loop, the action of the cams (25-125) brings the push arms (15-115) at their initial position leaving the tails of the ropes (64-65) in the loop. Simultaneously, the action of the cam (24-124} brings the clamps jaws (19-119) back at their initial position. As the clamps jaws (19-119) are moved back, the ropes (E~4-65) are released from the movable jaws (43-143) using the springs (48-148). The knot (66) is now made and is free from the knotter head (10). It required one complete shaft (46-146) and cams (24-124-25-125) revolution to accomplish all the movements.
The knotter head then moves backward using the gear motor (33). As it is moving backward, the transfer arm cam follower (~i3) mounted on the transfer arm lever (52) hits the transfer arm trigger (22). The transfer arm trigger (22) is spring loaded to activate the transfer arm lever (52) only on the backward movement of the knotter head and not when it moves forward. As it hits the transfer arm trigger (22), the transfer arm cam follower (53) follows a path that makes the transfer arm (12) move to the other side of the knotter head as shown in fig. 13. The rope (65), which is clamped into the transfer clamp (41 ), is now pulled to the other side of the knotter head. As the knotter head keeps moving backwards, the transfer clamp (41 ) passes over the table clamp (7) and the table clamp trigger (63) opens the table clamp movable jaw (69) that is spring loaded.
The rope (65) is simultaneously engaged in the table clamp (7) and released from the transfer arm clamp (41 ) as shown in fig. 14. As the backward movement of the knotter head is completed, the transfer arm cam followers (53) exits the transfer arm trigger (22) path and springs back to horse position.
The rotary table can now complete the last 1/8 of revolution to its home position in order to remove the wrapped product (4). The rope (65) now becomes the rope (64) to start a new cycle.
Of course, numerous modifications could be rnade to be above-described embodiments without departing from the scope of the invention as apparent to a person skilled in the art.
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2345862 CA2345862A1 (en) | 2001-05-01 | 2001-05-01 | Knotter and method for forming a knot |
| CA002383430A CA2383430C (en) | 2001-05-01 | 2002-04-24 | Method and apparatus for making a knot with flexible material wrapped around an article |
| EP02727075A EP1383681A1 (en) | 2001-05-01 | 2002-04-25 | Method and apparatus for making a knot with flexible material wrapped around an article |
| 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2345862 CA2345862A1 (en) | 2001-05-01 | 2001-05-01 | Knotter and method for forming a knot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2345862A1 true CA2345862A1 (en) | 2002-11-01 |
Family
ID=4168944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2345862 Abandoned CA2345862A1 (en) | 2001-05-01 | 2001-05-01 | Knotter and method for forming a knot |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2345862A1 (en) |
-
2001
- 2001-05-01 CA CA 2345862 patent/CA2345862A1/en not_active Abandoned
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