WO1999065774A1 - Appareil de commande de soufflet et procede pour ensacheuse - Google Patents
Appareil de commande de soufflet et procede pour ensacheuse Download PDFInfo
- Publication number
- WO1999065774A1 WO1999065774A1 PCT/US1999/013213 US9913213W WO9965774A1 WO 1999065774 A1 WO1999065774 A1 WO 1999065774A1 US 9913213 W US9913213 W US 9913213W WO 9965774 A1 WO9965774 A1 WO 9965774A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gusset
- bag
- spout
- pair
- gripping
- Prior art date
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
- B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
- B65B39/06—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers adapted to support containers or wrappers
- B65B39/08—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers adapted to support containers or wrappers by means of clamps
-
- 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
- B65B7/00—Closing containers or receptacles after filling
- B65B7/02—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks
- B65B7/06—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks by collapsing mouth portion, e.g. to form a single flap
Definitions
- This invention relates to bag filling machines of the type utilizing a spout having a discharge end from which particulate material is dispensed into a bag vertically suspended on the spout.
- Such machines conventionally utilize spout bag clamps to releaseably secure the mouth of a bag onto the spout for filling.
- U.S. Patent No. 4,078,358 discloses bag filling machines of such construction. Further, such bag filling machines generally incorporate bag hanging mechanism of the type disclosed in U.S. Patent No. 4,612,965 to address the bags to the discharge end of the spout.
- the discharge spout of such machines may be of a clam shell type utilizing a pair of opposing, pivotal clam-jaw sections movable between closed and open positions for controllably filling a bag clamped on the spout.
- U.S. Patent No. 4,432,186 discloses such spout construction on a bag filling machine. That patent also discloses the use of vertically oriented arm assemblies on the opposite sides of the machine filling spout for selective gripping and control of the gussets on the side walls of gusseted bags.
- the gusset clamping members intended to grip the gussets of the bag to be filled fail to properly grip the gussets
- failures may be caused by an obstruction of the path of the bag to the spout
- Another cause may be that the gussets are improperly formed, e.g. opened too wide, as the bag is addressed to the spout. Improper formation of the gussets as the bag is addressed to the spout may cause the gusset gripping members to fail to properly grasp the gussets.
- an improved bag gusset gripping and control apparatus which advantageously grips the gusset pleats on the opposite sides of a bag and pulls the gussets open, as the spout is opened for filling a bag, with the gripping of the gussets taking place externally of the bag.
- the foregoing basic objective has been realized for effective use on gusseted bags made of both paper and plastic, and is particularly characterized by the provision of two pairs of gusset pleat gripping assemblies positioned at each side of the filling spout.
- Each gripping assembly is comprised of a pair of gusset gripping members positioned so as to be located on the opposite faces of one of the two gusset pleats along one side of a gusseted bag, when the bag is vertically hung with its mouth clamped onto the filling spout.
- the two gusset pleats on each side of a bag are thus separately gripped and controlled to achieve maximum efficiency in bag filling.
- each of the aforesaid gusset pleat gripping assemblies is separately mounted on one of a pair of carriers disposed at each side of the discharge spout.
- the carriers are preferably in the form of pivotal arms, with each pair of carrier arms being movable towards and away from each other between gusset closing and opening positions.
- Each gusset pleat gripping assembly is comprised of a pair of gusset gripping members, one of which may be movable relative to the other by power means, such as a pneumatic or hydraulic cylinder, or a servo motor.
- the two gusset pleats at each side of a gusseted bag may be each separately gripped by a pair of gusset gripping members, with those pairs of gripping members then being moved away from each other by the actuation of the carrier arms to their separated, open positions.
- This serves to fully open the gussets on each side of a bag and thus to increase the effective filling area of a bag mouth when it is opened with the discharge spout for filling.
- one of the aforesaid g ⁇ pping members of each gusset pleat gripping assembly comprises a gusset pleat separator which is initially located in the fold space between two gusset pleats along one side of a gusseted bag, as initially vertically positioned on the filling spout.
- the complimentary gripping member of each of the pleat gripping assemblies is positioned on the opposite side of each gusset pleat.
- a pleat may be gripped between those two members and held for opening and closing of the gusseted side walls of a bag by the opening and closing of the aforesaid carrier arms.
- the aforesaid carrier arms for the gusset pleat g ⁇ pping assemblies are advantageously supported on a mounting frame movable inwardly and outwardly towards and away from the spout in a generally lateral direction. This permits the alternate collapsing and stretching of a bag held on the spout with its gusset pleats gripped between pairs of the gusset gripping members.
- a gusset tucker device is incorporated in the apparatus on each side of the filling spout.
- That gusset tucker may advantageously take the form of a finger of generally flat shape in a vertical plane, with each tucker finger pointing inwardly towards the spout, and thus towards the fold between gusset pleats on each side of a bag.
- the gusset tucker fingers are mounted for independent movement inwardly and outwardly towards and away from the spout in a substantially vertical plane.
- the tucker fingers may be moved inwardly towards the spout between the two gusset pleats on each side of a bag to engage the fold between the pleats and to force the gussets inwardly.
- This action of the tucker fingers serves to fully return the pleats to the normal shape they assume when the side walls of a bag are flattened together, after they have been spread open during a bag filling operation.
- An additional objective of the present invention is to provide an improved apparatus that will permit a gusseted bag to be more reliably addressed to the spout of the bag filling machine.
- This is in part accomplished by the addition of a power cylinder arranged and constructed to rotate the aforementioned carrier arms towards and away from each other between at least a first position, a second position, and a third position
- the gusset pleat separator and gusset gripping member combination of each of the carrier arms will be substantially clear of the spout when the arms are in the first position and will be capable of engaging the bag that has been placed upon the spout when the arms are in the second position
- the gusset pleat separator and gusset gripping member combination of each carrier arm will be capable of fully opening the top of the bag when the arms are in the third position
- the power cylinder may be a single cylinder or two cylinders arranged in a back-to-back, coaxial relation, but in any case, it is required that the power
- Another means for meeting the objective of improving the reliability of the bag filling machine involves providing a pair of gusset wedges constructed and arranged upon the pair of transfer arms that address the bags to the spout of the bag filling machine
- the respective gusset wedges engage a fold space between the two gusset pleats along each side of a gusseted bag to open the fold space as the bag is addressed to the spout
- the gusset wedges open the gussets of the bag more uniformly and permit the gusset gripping members to more easily and cleanly grasp the gusset pleats on each edge of the gusseted bag
- the gusset wedges be rotatably mounted to the transfer arms so that a small power cylinder coupled between each of the gusset wedges and the transfer arms may, upon actuation, rotate the gusset wedges into the fold space of the gusset pleats
- Fig. 1 is a front, perspective view of a bag filling machine incorporating the gusset gripper apparatus of this invention
- Fig. 2 is a fragmentary, perspective view showing one set of the gusset pleat gripping assemblies at one end of the machine of Fig. 1 ;
- Fig. 3 is a side elevation view of the bag filling machine as viewed from the front side of Fig 1 ;
- Fig. 4 is an end elevation view of the bag filling machine as viewed from the left end of Fig. 1 ;
- Fig. 5 is an end elevation view taken at the same location as Fig. 4 and showing the gusset grippers closed as initially engaging a bag clamped on the spout;
- Fig. 6 is an end elevation view taken at the same location as Fig. 4, but showing the spout and gusset gripper assemblies extended open;
- Figs. 7A-7H are top, plan views taken along lines 7-7 of Fig. 3 and showing the gusset grippers and spout bag clamps in successive positions assumed as the bag filling machine goes through a complete bag filling operation with a bag on the spout;
- Fig. 8 is a top plan view of a prior art embodiment of an open, gusseted bag as being filled on a spout;
- Fig. 9 is a top plan view of a gusseted bag as fully opened for filling with the gusset grippers of this invention.
- Fig. 10 is a front, perspective view of a bag filling machine incorporating the improved cylinder design of this invention.
- Fig. 11 is a side elevation view of the bag filling machine as viewed from the front side of Fig 10;
- Fig. 12 is a front, perspective view of a delivery and hanging mechanism incorporating a pair of gusset wedges
- Fig. 13 is a front, elevation view of the delivery and hanging mechanism having 5 an unopened gusseted bag engaged therein;
- Fig. 14 is a top view of the gusset wedges in their open orientation as depicted in Fig. 13;
- Fig. 15 is a front, elevation view of the delivery and hanging mechanism having an opened gusseted bag engaged therein;
- Fig. 16 is a top view of the gusset wedges in their closed orientation as depicted in Fig. 15;
- Figs. 17A-17J are top, plan views taken along lines 17-17 of Fig. 11 showing the gusset wedges, gusset grippers, and spout bag clamps in successive positions assumed as the bag filling machine goes through a complete bag filling operation with a bag on the spout.
- Fig. 1 illustrates a bag filling machine incorporating the improved bag gusset gripping and controlling mechanism of this invention.
- the bag filling machine is of a
- Hopper 4 serves to contain and deliver a supply of particulate material to discharge hopper 2.
- Spout 2 is preferably of the clam shell type, and is comprised of a pair of clam shell halves or jaws 8 and 10 which are pivotable between open and closed positions in a known manner to provide for the controlled discharge of particulate material into a bag 12 clamped on the spout. It is contemplated that a wide range of granular or particulate materials may be effectively dispensed into bags utilizing the improved filling machine as disclosed herein. Such materials would include, for example, cereals, pet food, feeds, and seeds.
- Power means preferably in the form of a double acting pneumatic cylinder 14, having a piston 16 as illustrated in Fig. 4, may be utilized to open and close spout clam shell halves 8 and 10 by way of a connecting link plate 18.
- a connecting rod (not shown) extends between the upper ends of clam shell sections 8 and 10 so that the pivotal movement of one clam shell section by the extension and retraction of piston 16 serves to simultaneously operate the other clam shell section.
- a connecting rod permits the two clam shell sections to pivot towards and away from each other in opening and closing movement.
- the bag filling machine of the type utilized with the gusset gripper apparatus of this invention also incorporates a pair of bag clamps 20 and 22 on the bottom end of the spout sections 8 and 10 for clamping the opposite side walls, at the top of the bag, against the outside faces of the bottom ends of the spout sections 8 and 10.
- Such spout bag clamps 20 and 22 are shown in Figs. 3 and 4, with only clamp 20 being shown in Fig. 1.
- Bag clamps 20 and 22 are operable by means of double acting power cylinders 24 and 26 having reciprocating pistons 28 and 30 as shown in Figs. 3 and 4.
- a pair of bag forming bars 38 and 40 mounted on a carriage 36 may be utilized for gripping and flattening a bag after it has been filled on spout 2, and for transporting the filled bag to a closing or sealing station, if desired. Alternatively, the bag may be sealed on the spout.
- Forming bars 38 and 40 are of the construction and operation as disclosed in U.S. Patent No. 4,432,186 with respect to forming bars 142 and 144. Such forming bars are pivotally suspended from legs 42, 44 of carriage 36 for swinging movement inwardly and outwardly towards and away from each other as indicated by the directional arrows in Fig. 1. As shown in Fig. 1 , the bars 38 and 40 are in their open position.
- a power cylinder (not shown) may be utilized in the same manner as disclosed in the aforesaid '186 patent to extend between the carriage legs 42, 44 for moving bars 38 and 40 towards each other from the open 5 position shown in Fig. 1 , to their closed position in gripping engagement across the outside faces, of the side panels of a bag 12, after it has been filled.
- Carriage 36 may be translated laterally on guide bars between the bag delivery position shown in Fig. 1 for closing, and a second position adjacent the spout with bars 38 and 40 straddling the bag 12.
- Carriage 36 is also vertically movable for lowering a filled bag from spout
- a bag filling machine of the type described above will typically include an apparatus for addressing a bag to the spout such as the delivery and hanging mechanism described in the aforementioned U.S. Patent No. 4,612,965, hereby incorporated by reference.
- the '965 patent illustrates in Fig. 2 of that patent a delivery and hanging mechanism 16 that transfers bags 12 from a bag feed mechanism 14 to the spout 86 of a bag filling machine.
- An embodiment similar in construction and function to the delivery and hanging mechanism of the '965 patent is best shown in Fig. 12 of the present application.
- the delivery and hanging mechanism 150 of the present invention comprises a pair of parallel transfer arms 152, 154 that pivot about a pivot bar 156. The distance between the parallel transfer arms 152, 154 is controlled by a
- 5 spacing structure 158 which comprises a rod 160 having oppositely threaded portions 162a and 162b formed thereon, a crank 164 for turning the rod 160, support brackets 166 for mounting the spacing structure 158 to the pivot bar 156, a pair of free running 5 bearings 168 for mounting the transfer arms 152, 154 on the pivot bar 156, and a pair of threaded sleeves 170 which translate the rotary motion of the rod 160 into a change in the linear distance between the parallel transfer arms 152, 154.
- the delivery and hanging mechanism 150, along with the spacing structure 158, is mounted upon the base of the bag filling machine in close proximity to the spout.
- the transfer arms 151 , l o 152 are actuated by means of a pair of cylinders (not shown) that are coupled between the base of the bag filling machine and the flanges 174 formed integral to the backside of the parallel transfer arms 152, 154.
- Each of the transfer arms 152, 154 has a pair of vacuum bag clamps 176, 178 mounted upon its distal end. Clamps 176 are fixed in relation to the respective transfer arms 152, 154 whereas clamps 178 rotate in a
- gusset clamping units 46 and 48 are provided on each side of spout 2.
- Each such gusset clamping unit incorporates a mounting frame 50, 52 comprised of a pair of right angle support plates 54, 55 and 56, 57, respectively Those plates are bolted or otherwise secured to horizontally extending pivot arms 58 and 60 attached to shafts 62, 64 rotatably supported in pairs of bearing blocks 66 and 68, respectively
- Each of the gusset clamping units 46, 48 may thus pivot on the axes defined by shafts 62 and 64
- Power means preferably in the form of doubt acting, pneumatic cylinders 70 and
- Those cylinders may advantageously be attached through clevis connectors shown at their bottom ends to mounting and adjusting blocks 74 and 76 on each side of the spout 2 Those mounting blocks are secured to outside plates 54 and 56 of the mounting frames 50 and 52
- the pistons of cylinders 70 and 72 may be swung inwardly and outwardly towards and away from the side walls of spout 2, for a purpose hereinafter set forth
- Carriers in the form of gusset opening and bag stretching arms 78a and 78b are pivotally mounted on opposite sides of spout 2 for independent, swinging movement in the vertical planes of the mounting frame plates 54, 55 and 56, 57
- the upper ends of arms 78a and 78b extend between the pairs of mounting plates, 54, 55 and 56, 57, respectively, and are pivotally secured thereto on horizontal axes defined by pivot pins not shown
- Those pivot pins extend through apertures in the upper ends of carrier arms 78a and 78b, one set of said apertures 82 being shown on arms 78a in Fig 2
- Extending between each pair of arms 78a and 78b are double acting, power cylinders 84a and 84b
- the extension and retraction of the pistons associated with those cylinders serves to move the respective pairs of arms 78a and 78b towards and away from each other.
- Each of the carrier arms 78a and 78b supports at its lower end a generally horizontally extending segment 80a and 80b, respectively.
- gusset pleat gripping assemblies 86a, 88a and 86b, 88b mounted on those horizontal segments 80a and 80b.
- gusset pleat gripping assemblies 86a, 88a and 86b, 88b are mounted on those horizontal segments 80a and 80b, respectively.
- gusset pleat gripping assemblies 86a, 88a and 86b, 88b mounted on each side of spout 2. It is to be noted that since each of the gusset gripper assemblies on opposite sides of the spout are identical, including their carrier arms, the same reference numerals have been given to such components, with the suffix letters "a” and "b" serving to identify the elements of those assemblies on the right and left sides of the machine, respectively, as viewed in Figs. 1 and 3.
- each gusset pleat gripping assembly on one side of the spout is comprised of a pair of gusset gripping members 90a, 92a and 96a, 98a, respectively.
- the gripping members 90a and 96a are of right angle shape as shown and include vertically extending segments 91 a and 97a, respectively. Those latter segments are secured to the innermost ends of carrier arm segments 80a, as by welding or by the use of fasteners.
- the complimentary and cooperating gripping members 92a and 98a have knurled heads 93a and 99a on their outer ends, which directly cooperate with members 90a and 96a in gripping the pleats of a gusseted bag therebetween.
- Each of the gripping members 92a and 98a are mounted on upright links 94a and 100a, respectively, with those links being pivotally attached at their upper ends to carrier arm segments 80a.
- Double acting power cylinders 102a and 106a mounted as shown on the underside of carrier arm segments 80a have their pistons 104a and 108a, respectively, attached to upright link segments 94a and 100a.
- pivotal gripper members 92a and 98a may be moved inwardly and outwardly towards and away from cooperating gripper members 90a and 96a.
- the innermost gripper members 90a and 96a are preferably wedge shaped as shown to facilitate their being received in the centerfold between the two gusset pleats along each side of a gusseted bag.
- Those gripping members 90a and 96a are thus supported on carrier arms 78a so as to be located where they will be positioned in the aforesaid manner in the fold between the two gusset plates along one side of a gusseted bag to function as a pleat separator when a bag 12 is hung on the bottom end of spout 2 for filling, in the manner shown in Figs. 1 and 7B.
- a gusset tucking device has been incorporated in the gusset gripping and control apparatus.
- the tucker devices are generally indicated by reference numerals 110a and 110b, which are located on each side of the spout as illustrated in Figs. 1-4.
- the construction, mounting, and operation of the tucker devices on each side of the spout are identical, and thus only one of such devices has been described, primarily with respect to the "a" suffix numbers.
- the corresponding tucker device components and its mounting arrangement have been designated, as shown in Fig. 1 , by the reference number suffix "b."
- the tucker devices 110a and 110b are advantageously located as shown between the innermost gripping members 90a, 96a and 90b, 96b, respectively. Those tucker devices preferably are of elongated, flat shape and are disposed in a generally vertical plane as shown. Tucker device 110a terminates at its lower end in a generally horizontally extending finger portion 112a for engagement within the fold between the two pleats on one side of a bag as illustrated in Fig. 7E.
- the gusset tucker 110a is connected at its upper end to downwardly depending member 114a of a pivotal hanger arm 116a.
- the apertured top end of hanger arm 116a is supported on a pivot pin 118a.
- a clevis 120a holds pivot pin 118a and is attached to a mounting plate 122a, secured as by fasteners through fastening holes shown to support plate 55 of mounting frame 50.
- Gusset tucker 110a is independently movable inwardly and outwardly with respect to spout 2 in a substantially vertical plane by means of a double acting power cylinder 126a having a piston 128a.
- piston 128a is connected by a clevis to a projection on hanger arm 116a.
- Cylinder 126a is suspended from a clevis 124a attached to a separate mounting plate 127a secured to outer support plate 54 (Fig. 1 ) of mounting frame 50.
- cylinders 70 and 72 may be coupled to complementary cylinders 70a and 72a.
- Cylinders 70a and 72a are, in the embodiment depicted in Figs. 10 and 11 , mounted in a back-to-back, coaxial relationship with the cylinders 70 and 72. This back-to-back relationship allows the respective stroke lengths of the pistons of the cylinders 70, 70a and 72, 72a to be additive, subsequently permitting the carrier arms 78a, 78b to which the cylinders 70, 70a and 72, 72a are coupled to be rotated clear of the spout as the bag is addressed to the spout by the transfer arms 152, 154.
- This first position of the carrier arms 78a, 78b is achieved in this embodiment by retracting the pistons of cylinders 70, 70a, 72, and 72a.
- the pistons of cylinders 70a and 72a are extended to a second position This extension causes the carriers to be rotated toward each other, bringing the gusset gripping assemblies into contact with the gusset pleats in a reliable fashion
- the spout will begin to open
- the pistons of cylinders 70 and 72 are extended to bring the carriers to a third position In this third position, the gusset gripping assemblies are rotated toward one another, thereby permitting the spout to more fully open the top of the bag When the bag has been filled with part
- a single cylinder 70b and 72b in lieu of back-to-back cylinders 70, 70a and 72, 72a
- Such a cylinder must be capable of precise and accurate extension at varying stroke lengths to rotate the carrier arms through the requisite three positions
- each gusset wedge 180, 182 is essentially a cam having a tapered, eccentric edge 181.
- the gusset wedges are rotatably mounted upon the transfer arms 152, 154 at a right angle to the rotation of, and proximal to, the pair of vacuum bag clamps 176, 178 mounted upon each of the transfer arms 152, 154.
- gusset wedges 180, 182 are substantially identical in both geometry and the manner in which they are mounted upon the transfer arms 152, 154, only one of the gusset wedges will be described in detail.
- Gusset wedge 180 is affixed to and actuated through, hinge pin 184.
- Hinge pin 184 is received in sleeve 186 to form a vertical hinge.
- Sleeve 186 is in turn affixed to the transfer arm 152.
- Wrench arm 188 is received upon the end of the hinge pin 184 opposite the gusset wedge 180 so as to retain the hinge pin within sleeve 186.
- Wrench arm 188 is coupled to and rotated by the piston 190 of cylinder 192 which is itself coupled through a clevis connector 194 to transfer arm 152.
- piston 190 is extended, thereby rotating wrench arm 188 and subsequently, gusset wedge 180.
- Fig. 13 illustrates how the gusset wedges 180, 182 are arranged upon the transfer arms 152, 154 with respect to an unopened bag that has been grasped by the pairs of vacuum bag clamps 176, 178.
- the tapered edge 181 of each of the gusset wedges 180, 182 is aligned with the fold space that exists between the gusset pleats at each edge of the bag held between the vacuum bag clamps 176, 178 (not shown).
- the vacuum bag clamps 176, 178 have not yet been actuated to open the top of the bag and the gusset wedges 180, 182 are in their open position.
- Fig. 14 more 5 clearly illustrates the gusset wedges 180, 182 in their open position.
- Fig. 15 illustrates how the gusset wedges 180, 182 act to ensure that the gussets are properly formed as the bag is addressed to the spout of the bag filling machine.
- the movable vacuum bag clamps 178 (not shown) have been o rotated away from the stationary vacuum bag clamps 176, thereby opening the top of the bag.
- the gusset pleats As the top of the bag opens, it is not uncommon for the gusset pleats to be opened too far, resulting in a flattening of the fold space between the gusset pleats. When this occurs, it is possible that the gusset g ⁇ pping members mounted on the carrier arms of the bag filling machine will not be able to grasp the gusset pleats.
- the gusset wedges 180, 182 are rotated into the fold space between the gusset pleats after the pairs of vacuum bag clamps 176, 178 have acted to open the bag top.
- the gusset wedges 180, 182 can be seen in their closed position, maintaining the proper shape of the gusset 0 pleats.
- Fig. 16 more clearly illustrates the closed position of the gusset wedges 180,
- Figs. 7a-7h The operation of the gusset gripping apparatus in a predetermined sequence of steps is illustrated in Figs. 7a-7h. Those views are partially schematic, top plan views5 taken along lines 7-7 of Fig. 3 so as to show the primary operating components of the bag clamping and gusset g ⁇ pping apparatus in the sequential stages of operation.
- the gusseted bag 12 is showing as having a pair of gusset pleats P-1 , P-2 along one side wall, and a second pair of gusset pleats P-3 and P-4 along its opposite side wall
- the spout bag clamps 20, 22 are open, and the gusset gripper assemblies 86a, 88a and 86b, 88b are in the positions shown in Fig 4, and as schematically illustrated in Fig 7A At that time, carrier arms 78a and 78b are pulled together, with the pistons of their actuating cylinders 84a and 84b retracted
- Gusset gripper members 92a, 98a and 92b, 98b will also be in their open or retracted positions
- 90a, 96a and 90b, 96b are positioned as shown in Figs 4 and 7A so as to be received between the opposite pairs of gussets P-1 P-2 and P-3, P-4 of a bag 12 positioned as shown in Fig 1 and Fig 7A around the bottom ends 32 and 34 of discharge spout 2
- the gusset clamping units 46 and 48 are moved laterally _ "• inwardly towards the opposite sides of spout 2 in a swinging movement about the pivot axes defined by shafts 62 and 64 by extending the pistons of actuating cylinders 70 and 72
- Fig 3 shows the inwardly moved position of the gusset gripper assemblies 25 88a and 88b in phantom line, and those assemblies are shown in solid lines in their initial, outwardly swung positions of Figs 7A and 7B
- the next step of opening the spout clam shell sections or halves 8 and 10 begins The opening of the spout clam shell sections, and the separation of the spout bottom ends 32 and 34, is accomplished by retracting piston 16 of spout opening cylinder 14 shown in Fig 4 Figs 6 and 7D show the position of the operating components at the conclusion of this next step, with the spout open and the mouth of bag 12 pulled fully open Simultaneously with the opening of the spout by the actuation of cylinder 14, cylinders 84b and 84a are actuated to extend their pistons This serves to separate carrier arms 78a and 80a to the positions shown in Fig 6 simultaneously with the opening of the spout The separating or moving apart of carrier arms 78a and 78b, with the gussets P-1 and P-2 and P-3 and P-4 clamped between the members of the clamping assemblies 86a, 88a and 86b, 88b
- Fig 7F shows the spout fully closed and the gusset gripping assemblies moved back inwardly to their gusset closing positions by the inwardly swinging action of earner arms 78a and 78b Cylinders 70 and 72 are then again actuated to their retracted positions to swing the gusset clamping units 46 and 48 back outwardly, away from spout 2, to the positions shown in solid lines with respect to gusset gripping assemblies 88a and 88b in Fig 3 This has the effect of stretching or pulling the side walls of bag 12 tight as shown in Fig 7F
- the bag forming and delivery bars 38 and 40 are properly positioned Initially, those bars are in their retracted positions away from the bag spout as shown in the steps 7A, 7B and 7C with the forming bars swung inwardly together
- the forming bars are spread apart or opened and moved towards the spout to embrace the bag, below the spout
- the forming bars are swung inwardly towards each other by a power cylinder (not shown) supported between the carrier legs 42 and 44
- the forming bars 38 and 40 are shown in that inwardly moved position in Fig 7F, in flattening engagement against the bag side walls, below the bottom end of spout 2
- the bag is thus gripped and firmly held by the bars 38 and 40
- the step of Fig 7G may be carried out, with the spout clamps 20 and
- Figs 8 and 9 graphically illustrate in schematic form the increased bag mouth filling area accomplished by the gusset gripping apparatus of this invention
- Fig 8 shows a prior art embodiment in which the bag gusset pleats are gripped together and held closed when the bag mouth is opened for filling on a spout
- Fig 9 shows the position which the bag mouth and its gussets P-1 , P-2 and P-3, P-4 will assume when fully opened to a material-receiving position by the gusset gripping assemblies disclosed herein It will be seen that the receiving area of the bag 12 is significantly increased by separately gripping each pair of gusset pleats P-1 , P-2 and P-3, P-4 and pulling those pleats open, in a direction away from each other as is accomplished by the operation illustrated in Fig 7D
- gusset gripping apparatus including the improved cylinder structure and gusset wedge apparatus, in a predetermined sequence of steps is illustrated in Figs 17A-17J Those views are partially schematic, top plan views taken along lines A-A of Fig 1 1 so as to show the primary operating components of the bag clamping and gusset gripping apparatus in the sequential stages of operation
- the gusseted bag 12 is shown as having a pair of gusset pleats P-1 , P-2 along one side wall, and a second pair of gusset pleats P-3 and P-4 along its opposite side wall
- the bag filling operation begins with a bag 12 being addressed to the spout 2 of the bag filling machine by the delivery and hanging mechanism 150 as illustrated in Figs 15 and 17A
- the top of the bag 12 is held open by the pairs of vacuum bag clamps 176, 178 mounted on the distal end of the transfer arms 152, 154 Gusset wedges 180, 182 are in their closed position so as to maintain the shape of the gussets P-1 , P-2, P-3 and P-4 as the bag 12 is swung onto the spout
- the gusset clamping units 46, 48 are kicked out into their first position so that the gusset gripper assemblies 86a, 88a and 86b, 88b and the fingers 112a and 112b of the gusset tuckers 110a and 110b are clear of the path of the bag 12 to the spout. Also at this time, the spout bag clamps 20, 22 are open, and the gusset gripper assemblies 86a, 88a and 86b, 88b are in the positions indicated schematically illustrated in Fig. 17B.
- carrier arms 78a and 78b are pulled together, with the pistons of their actuating cylinders 84a and 84b retracted.
- Gusset gripper members 92a, 98a and 92b, 98b will also be in their open or retracted positions.
- Cooperating gusset gripping members in the form of gusset pleat separators 90a, 96a and 90b, 96b are also positioned as shown in Fig. 17B, being generally located between the opposite pairs of gussets P-1 , P-2, and P-3, P-4 of the bag 12 as it is positioned around the bottom ends 32 and 34 of the discharge spout 2.
- cylinders 70a and 72a are actuated to rotate the carrier arms 78a and 78b and subsequently the gusset gripper members 92a, 98a, and 92b, 98b, towards the spout 2 to its second position.
- the opposed gusset gripping units 46 and 48 on opposite sides of spout 2 will be swung inwardly to their second position so as to position the gusset pleat separator members 90a, 96a and 90b, 96b as shown in Fig. 17C between the respective pairs of gusset pleats P-3, P-4 and P-1 , P-2.
- the fingers 112a and 112b of the gusset tuckers 110a and 110b will be in their outwardly moved positions away from the opposite sides of spout 5 2 with pistons 128a and 128b of cylinders 126a and 126b retracted.
- the gusset pleat separator members 90a, 96a and 90b, 96b are spaced apart sufficiently that tucker fingers 112a and 112b may be received and positioned therebetween.
- the top end of bag 12 is clamped in place on the bottom end of spout 2 between the spout lower ends 32 and 34 and clamps 20 and 22 by actuating clamps 20 and 22 inwardly to the bag gripping position shown in Fig. 17D.
- This is done by extending the pistons 28 and 30 of bag clamp actuating cylinders 24 and 26 from the retracted positions shown in Fig. 4.
- all four bag gussets P-1 , P-2, P-35 and P-4 are clamped between the respective pairs of gusset gripping members 90a- 92a, 96a-98a, 90b-92b, and 96b-98b in the manner shown in Fig. 17C.
- the gusset clamping action is accomplished by extending the pistons of cylinders 102a, 106a and 102b, 106b from the retracted positions shown in Fig. 4. This closed, clamping position of the gusset gripping assemblies 90a, 92a and 96a, 98a is shown in Figs. 5 and 17D.0
- gusset clamping units 46 and 48 are moved laterally inwardly towards the opposite sides of spout 2 in a swinging movement about the pivot axes defined by shafts 62 and 64 by extending the pistons of actuating cylinders 70 and 72.
- This positions the gusset gripping assemblies 86a, 88a and 86b, 88b adjacent the 5 spout as shown in Fig. 17E, and has the effect of collapsing the side walls of bag 12 inwardly.
- Fig. 11 shows the inwardly rotated third position of the gusset gripper assemblies 88a and 88b in phantom line; and those assemblies are shown schematically in solid lines in their respective first and second positions in Figs 17B and 17C, respectively
- the next step of opening the spout clam shell sections or halves 8 and 10 begins The opening of the spout clam shell sections, and the separation of the spout bottom ends 32 and 34, is accomplished by retracting piston 16 of spout opening cylinder 14 shown in Fig 4 Figs 6 and 17F show the position of the operating components at the conclusion of this next step, with the spout open and the mouth of bag 12 pulled fully open Simultaneously with the opening of the spout by the actuation of cylinder 14, cylinders 84b and 84a are actuated to extend their pistons This serves to separate carrier arms 78a and 80a to the positions shown in Fig 6, simultaneously with the opening of the spout The separating or moving apart of carrier arms 78a and 78b, with the gussets P-1 and P-2 and P-3 and P-4 clamped between the members of
- Fig 17H shows the spout fully closed and the gusset gripping assemblies moved back inwardly to their gusset closing positions by the inwardly swinging action of carrier arms 78a and 78b Cylinders 70 and 72 are then again actuated to their retracted positions to swing the gusset clamping units 46 and 48 back outwardly, away from spout 2, to their second positions shown in phantom lines with respect to gusset gripping assemblies 88a and 88b in Fig 11 This has the effect of stretching or pulling the side walls of bag 12 tight as shown in Fig 17H
- the bag forming and delivery bars 38 and 40 are properly positioned Initially, those bars are in their retracted positions away from the bag spout as shown in the steps illustrated in Figs 17C, 17D and 17E with the forming bars swung inwardly together
- the forming bars are spread apart or opened and moved towards the spout to embrace the bag, below the spout
- the forming bars are swung inwardly towards each other by a power cylinder (not shown) supported between the carrier legs 42 and 44
- the forming bars 38 and 40 are shown in that inwardly moved position in Fig 17H, in flattening engagement against the bag side walls, below the bottom end of spout 2
- the bag is thus gripped and firmly held by the bars 38 and 40
- the step of Fig 171 may be carried out, with the sp
- va ⁇ ous changes may be made in the size, shape, and operating mechanisms of the bag filling machine, with its gusset pleat gripping assemblies, as disclosed herein, without departing from the scope and spirit of the ⁇ o n invention as defined by the following claims.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99957044A EP1121294A1 (fr) | 1998-06-19 | 1999-06-10 | Appareil de commande de soufflet et procede pour ensacheuse |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/100,184 | 1998-06-19 | ||
US09/100,184 US6003289A (en) | 1997-03-21 | 1998-06-19 | Gussett control apparatus and method for bag filling machine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999065774A1 true WO1999065774A1 (fr) | 1999-12-23 |
Family
ID=22278511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/013213 WO1999065774A1 (fr) | 1998-06-19 | 1999-06-10 | Appareil de commande de soufflet et procede pour ensacheuse |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1121294A1 (fr) |
WO (1) | WO1999065774A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1688351A2 (fr) | 2005-02-04 | 2006-08-09 | Giro GH S.A. | Dispositif de pliage |
EP4253258A1 (fr) * | 2022-03-30 | 2023-10-04 | Payper S.A. | Dispositif et procédé de placement de sacs dans une ouverture de remplissage |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2925699A (en) * | 1955-04-18 | 1960-02-23 | Ozor Louis | Device for intucking the mouths of paper bags |
US4078358A (en) | 1976-08-31 | 1978-03-14 | National Distillers And Chemical Corporation | Bag-hanging and bag-filling machines adapted for synchronous and independent operation and method of using same |
US4432186A (en) | 1980-05-05 | 1984-02-21 | Mcgregor Harold R | Automatic bag hanger |
US4563864A (en) * | 1982-12-13 | 1986-01-14 | Windmoller & Holscher | Apparatus for filling sacks |
US4612965A (en) | 1984-08-30 | 1986-09-23 | Mcgregor Harold R | Automatic bag hanging device |
US5349996A (en) | 1992-07-27 | 1994-09-27 | Mcgregor Harold R | Bag filling apparatus having dust-tight spout |
US5535792A (en) * | 1994-12-01 | 1996-07-16 | Mcgregor; James R. | High speed bag filling machine |
-
1999
- 1999-06-10 WO PCT/US1999/013213 patent/WO1999065774A1/fr not_active Application Discontinuation
- 1999-06-10 EP EP99957044A patent/EP1121294A1/fr not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2925699A (en) * | 1955-04-18 | 1960-02-23 | Ozor Louis | Device for intucking the mouths of paper bags |
US4078358A (en) | 1976-08-31 | 1978-03-14 | National Distillers And Chemical Corporation | Bag-hanging and bag-filling machines adapted for synchronous and independent operation and method of using same |
US4432186A (en) | 1980-05-05 | 1984-02-21 | Mcgregor Harold R | Automatic bag hanger |
US4563864A (en) * | 1982-12-13 | 1986-01-14 | Windmoller & Holscher | Apparatus for filling sacks |
US4612965A (en) | 1984-08-30 | 1986-09-23 | Mcgregor Harold R | Automatic bag hanging device |
US5349996A (en) | 1992-07-27 | 1994-09-27 | Mcgregor Harold R | Bag filling apparatus having dust-tight spout |
US5535792A (en) * | 1994-12-01 | 1996-07-16 | Mcgregor; James R. | High speed bag filling machine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1688351A2 (fr) | 2005-02-04 | 2006-08-09 | Giro GH S.A. | Dispositif de pliage |
EP1688351A3 (fr) * | 2005-02-04 | 2009-06-03 | Giro GH S.A. | Dispositif de pliage |
EP4253258A1 (fr) * | 2022-03-30 | 2023-10-04 | Payper S.A. | Dispositif et procédé de placement de sacs dans une ouverture de remplissage |
Also Published As
Publication number | Publication date |
---|---|
EP1121294A1 (fr) | 2001-08-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6003289A (en) | Gussett control apparatus and method for bag filling machine | |
EP1152945B1 (fr) | Appareil et procede de remplissage de sacs | |
JP2571603B2 (ja) | 一端が開口した袋を充填し閉じる装置 | |
US4322932A (en) | Bag filling and handling apparatus | |
US6672038B2 (en) | Bag manipulating method and assembly for a bag filling station | |
US5203145A (en) | Stripper mechanism for a tubular bag packaging machine | |
US4115978A (en) | Apparatus for automatically filling and closing sacks | |
JPH0570016A (ja) | シート材の積重ね兼移送装置及び方法 | |
CN112918789B (zh) | 超细粉高速上袋夹袋系统 | |
US6658821B2 (en) | Bag loading method and assembly for a bag filling station | |
EP0548463B1 (fr) | Dispositif pour ouvrir des sacs et pour les enfiler sur une tuyère de remplissage | |
JP2006282239A (ja) | ロータリ式袋詰め包装機における包袋の開口装置 | |
US4305241A (en) | Method and apparatus for suspending large sacks from the filling funnel of a sack-filling apparatus | |
CN213862892U (zh) | 一种水平给袋式全自动包装机 | |
US5588944A (en) | Apparatus for welding the tubular sections of sacks, bags or the like | |
WO1999065774A1 (fr) | Appareil de commande de soufflet et procede pour ensacheuse | |
GB2065060A (en) | Method and apparatus for opening and applying bags to a filling nozzle | |
DE69105063T3 (de) | Automatische Maschine zum Befüllen von Säcken. | |
US5185987A (en) | Apparatus for transferring stacks of flexible products | |
DE3503992A1 (de) | Flachbeutel-fuell- und -schliessvorrichtung | |
US5282351A (en) | Method for making, filling and sealing sacks | |
CN211969781U (zh) | 预制袋包装机 | |
CN219821904U (zh) | 水平包装机的包装袋夹持展袋装置 | |
US3910167A (en) | Machine for placing and welding handles on plastic bags | |
DE19537792C1 (de) | Vorrichtung zum Aufspreizen und Aufstecken von Säcken |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA CN KR |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1999957044 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1999957044 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1999957044 Country of ref document: EP |