US3720158A - Bale strapping apparatus - Google Patents

Bale strapping apparatus Download PDF

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Publication number
US3720158A
US3720158A US00190203A US3720158DA US3720158A US 3720158 A US3720158 A US 3720158A US 00190203 A US00190203 A US 00190203A US 3720158D A US3720158D A US 3720158DA US 3720158 A US3720158 A US 3720158A
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Prior art keywords
strapping
carriage
plunger
head
framework
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US00190203A
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English (en)
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L Sauer
G Huson
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Signode Corp
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Signode Corp
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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
    • B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
    • B65B13/04—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes with means for guiding the binding material around the articles prior to severing from supply
    • B65B13/06—Stationary ducts or channels

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  • ABSTRACT The improved strapping apparatus comprising the present invention has been designed primarily in connection with the strapping of springy fibrous materials such as cotton or synthetic fibers while the same are held in bale form and under compression in the press box chamber of a baling press.
  • the invention is however capable of other uses and strapping apparatus embodying the principles of the present invention may be found useful in connection with the strapping of a wide variety of other articles to which multiple strapping loops are to be applied at longitudinally spaced regions therealong. Irrespective however of the particular use to which the invention may be put, the essential features are at all times preserved.
  • the vertical T-head construction of the baling press frame will allow linear straight-line travel of the head only to the region of the last strapping position, after which further linear movement of the head is impossible due to the presence of the vertical tensioning column of the baling press frame which constitutes the head portion of the T-head construction and which is disposed directly in the path of travel of the head.
  • the present invention contemplates the provision of a novel means for swinging the strapping head outwardly and away from the normal linear path of travel which is followed by the head during successive strap-applying operations so that after the last strapping operation on the load has been effected, the head will clear the tensioning column and come to rest in a parked" angular position where it may remain during load removal operations and sub stitution of a fresh load in the strapping area.
  • this will enable the press box doors to swing to their open positions without interference by the strapping head and it will also allow for such freedom of movement, either by such load removal equipment as is employed, or by the operator of the apparatus.
  • sectional strap feeding chutes including a front chute section which is fixedly supported by the strapping head and a rear chute section which travels with the carriage and remains permanently in register with the front chute.
  • the two thus transversely aligned chute sections move in unison successively to the various strapping positions of which the head is capable and, at each position, they align themselves with fixed top and bottom chute sections to thus establish a continuous strap guide which encircles the load and through which the strapping head feeds the strapping preparatory to performing its usual strap tensioning operation whereby the strapping loop is shrunk upon the load.
  • Such means for causing both the strapping head and the rear travelling strap chute to shift to a parked outof-the-way position after the last strap has been applied to the load constitutes one of the principal objects of the present invention and, in carrying out this object, the invention contemplates the provision of a novel quadrilateral four-bar articulated linkage mechanism including the usual fixed bar and three movable bars, the strapping head being supported on one movable bar and another movable bar constituting the crank bar of the mechanism and being provided with a cam follower roller thereon which engages the obstruction as the strapping head approaches the latter and operates the linkage mechanism automatically in such a manner that the strapping head swings out of the way and clears the obstruction at such time as the carriage moves beyond the strapping area.
  • a similar four bar linkage mechanism is provided for the rear travelling chute, the two linkage functioning in unison to bring the strapping head and chute section to their respective parked positions simultaneously, all in a manner that will be described in detail subsequently.
  • Another and important feature of the present invention resides in a novel manner by means of which the strapping head is caused to traverse the load and, in so traversing the same, pause at each strapping position for strap applying operations.
  • complicated control mechanism has been required embodying such functions and mechanisms as establishing a positive carriage drive in both directions for effecting strapping head traverse and return motions, insuring accurate centering of the strapping head and its associated chute at each strapping position, initiating carriage movement after each strapping operation to bring the strapping head to the next strapping position,
  • operative traversing of the load for strapping purposes is accomplished by continuously and yieldingly biasing the carriage toward its parked position and providing a series of stop surfaces, one for each strapping position, on the apparatus framework and which. are disposed directly in the path of movement of a normally projected retractible stop plunger which is provided on the carriage.
  • the normally projected stop plunger engages the stop surface at the first strapping position and terminates movement of the carriage.
  • This parked position of the strapping head and chutes represents the normal or idle position of the apparatus in-between successive load strapping operations and in such position all apparatus functions remain inoperative until such time as it is desired to initiate a succeeding strapping cycle.
  • the invention is susceptible to substantially fully automatic operation and, in the exemplary illustrated form thereof, momentary depression of a start button serves automatically to return the carriage to its yieldingly biased position with the stop plunger in engagement with the stop surface at the first strapping position so as to thus commence a full strapping cycle as outlined above.
  • the strapping head may be caused to omit the application of a strap to the load at any selected strapping position or positions.
  • the various stop surfaces are capable of being selectively withdrawn from the path of movement of the oncoming stop finger by prelocating them in such withdrawn positions that the continuously biased carriage will simply by-pass such strapping position and proceed automatically to the next succeeding projected stop surface where the strapping operation will take place incident to engagement of the stop finger on the carriage therewith.
  • FIG. 1 is a fragmentary side elevational view of a bale strapping apparatus embodying the principles of the present invention, the full line disclosure representing the strapping head in an operative strapping position and the dotted line disclosure representing the parked condition of the strapping head;
  • FIG. 2 is a fragmentary end elevational view of the structure shown in FIG. 1 with a portion of the tension column broken away in the interest of clarity;
  • FIG. 3 is an enlarged sectional view taken substantially on the line 3-3 of FIG. 1;
  • FIG. 4 is a sectional view taken on the line 4-4 of FIG. 3;
  • FIG. 5 is a sectional view taken substantially on the line 5-5 of FIG. 2 and showing the strapping head in an operative position;
  • FIG. 6 is a top plan view of the structure shown in FIG. 2 as indicated by the line 6-6 but with the strapping head moved to its parked position;
  • FIG. 7 is an enlarged view taken substantially on the line 7-7 of FIG. 2 but showing the carriage stop plunger in its retracted position;
  • FIG. 8 is an enlarged sectional view similar to FIG. 7, showing the carriage stop plunger in its projected position
  • FIG. 9 is a side elevational view of the structure shown in FIG. 8.
  • FIG. 10 is an electrical and pneumatic circuit diagram illustrating the manner in which the operation of the strapping apparatus may be controlled.
  • the installation embodies many of the features of a conventional press box for forming bales of cotton or other fibrous material.
  • the installation involves in its general organization a tensioning column 10 which projects vertically upwardly from a foundation or supporting surface 12 and from the upper end of which there projects forwardly and horizontally a tubular platen-supporting beam 14 which, as shown in FIG. 2, is substantially square in cross section.
  • a composite upper platen 16 Secured to the underneath side of the beam 14 is a composite upper platen 16 which, in effect, constitutes the top wall of a press box which defines a press chamber 18 for a bale B that is to be strapped by the strapping mechanism of the present invention.
  • the full details of the press box have been omitted from the disclosure herein.
  • a press box of the character with which the present invention is associated may be provided with side walls or doors which, in combination with the upper and lower platens, establish the press box chamber 18.
  • side walls or doors have been omitted since they bear no direct relation to the invention.
  • the extreme forward end of the beam is supported by and secured to a vertical column 20 which projects upwardly from the supporting surface 12.
  • the columns 10 and 20, as well as the beam 14 are preferably, but not necessarily, formed of rectangular tube stock.
  • the upper platen 16 directly overlies the usual ejection sill 22 within which there is mounted for vertical reciprocation a lower platen 24, the latter being carried on a ram 26.
  • a charging chamber (not shown) is disposed below the level of the foundation surface 12 and includes a turntable arrangement by means of which masses of the fibrous material which are loaded into the chamber are successively indexed into position immediately below the ejection sill 26 and are then pushed vertically upwardly by the lower platen 24, through the sill and into the press box chamber 18, after which each bale is compressed between the upper and lower platens 16 and 24 and thus shaped into bale form as indicated at B, preparatory to strapping of the bale.
  • the strapping operation is carried out, this operation consisting in the placement of a plurality'of loops or bands of metal strapping about the bale.
  • the number of such bands will vary, of course, according to the size and length of the bale but in the form of apparatus illustrated herein facilities forstrapping the bale with six such bands 30 are provided.
  • a travelling strapping head 32 of conventional construction having facilities for receiving strapping from a suitable source, feeding it out through a guide chute which encompasses an article undergoing strapping so as to establish a closed article-encircling loop, tensioning or shrinking the loop onto the article, applying a metal seal to the overlapping portions of the closed loop, crimping the seal, and finally severing the tensioned loop from the source head for accomplishing these functions is, per se, not
  • the present invention is concerned primarily with a novel means for effecting movement of the strapping head bodily alongside the bale B which is disposed within the press box chamber 18. Since, in the illustrated form of the invention, six bands or loops of strapping are applied to the bale, means are provided whereby the strapping head is caused to traverse the bale longitudinally in one direction from one end thereof to the other and, during such traversing operation, to pause at each of six strapping stations long enough to efi'ect a complete operation embodying the various strapping machine functions mentioned above.
  • the strapping head 32 be moved to an out-of-the-way parked" position where it will not interfere with the opening of the press box doors or other operations incident to removal of the strapped bale from the pressbox, and the subsequent closing of the doors and introduction of a fresh charge of the fibrous material into the chamber 18.
  • the width of the tensioning column 10 is appreciably greater than that of the beam 14, and since the column 10 is disposed directly in the linear path of movement of the strapping head 32, it is necessary that the head be swung to one side or otherwise moved so that it avoids such column. The manner in which this is accomplished constitutes one of the principle features of the invention.
  • Another and important feature of the invention resides in the manner in which the strapping head is caused to locate itself accurately at each strapping station and in precise register with certain fixed positions of the strapping chute which are disposed at the various strapping stations.
  • the strapping head 32 is mounted on a travelling carriage which is designated in its entirety at 40 which moves tractionally on a pair of rails 42 and 44 by means of supporting rollers 46.
  • the carriage 40 is of inverted U- shape saddle-like design and includes an upper horizontal carriage frame bar 48 which is centered transversely over the beam 14 and from the ends of which there depend vertical side legs 50 and 52 which straddle the press box chamber 18.
  • the tracks 42 and 44 are mounted on the outer ends of two pairs of lateral track supports adjacent the opposite ends of the beam 14, each pair including rear supports 54 and front supports 56 (FIG. 2), all of such supports being welded or otherwise secured to the beam 14.
  • the various rollers 46 are rotatably mounted on respective brackets 58 and 60 carried by the legs 50 and 52, the bracket 60 also serving to support guide rollers 62 which straddle the track 44 and thus maintain the carriage 40 as a whole properly centered on the tracks 42 and 44.
  • the chute arrangement whereby the strapping is guided around the compressed bale at each strapping station includes a series of longitudinally fixed chute sections and a pair of travelling longitudinally movable chute sections.
  • the fixed chute sections include an upper series 64 (FIG. 1) which is established by the fixed upper platen assembly 16 and a cooperating lower series 66 which is established by the lower platen 26.
  • the upper series of longitudinally fixed chute sections 64 are truly fixed in that they remain stationary at all times while the lower series 66 of chute sections move with the vertically shiftable platen 24 but nevertheless remain constantly in register with the respective strapping stations with which they are associated.
  • the travelling chute sections include a rear chute section 68 which is supported by and travels with the carriage leg 50 and a front chute section 70 which is supported by and travels with the carriage leg 52.
  • the chute sections 68 and 70 are so mounted on the travelling carriage 40 that as the carriage 40 traverses the various strapping stations in succession, these chute sections move into operative register with the fixed chute sections 64 and 66 which overlie and underlie the bale at such stations in order to create a closed chute path around the bale and through which the strapping material may be fed by the strapping head 32.
  • chute sections 68 and 70 are so mounted on the travelling carriage 40 that normally they are in transverse register with the strapping head 32 and remain in such transverse register therewith as the head moved successively from an initial starting position adjacent the end of the beam which is remote from the tensioning column 10 to the terminal strapping position of the head wherein the latter is in close proximity to the tensioning column 10 and immediately before the head is swung to its parked out-of-the-way position as previously described.
  • the two travelling chute sections 68 and 70 become similarly parked in positions which will not interfere with bale removal operations after bale strapping has been completed.
  • the front strap chute section 70 is fixedly mounted on the strapping head 32 in proper strap-receiving position so that when the head is swung to its parked position the chute section 70 will automatically move with the head to a non-interfering position.
  • the rear strap chute section 68 is provided with individual facilities whereby, when the carriage 40 has moved past the last strapping station or position, this chute section will automatically be moved to a parked position, all in a manner that will be set forth in detail presently. It is deemed sufficient for the present to state that in the case of the strapping head 32 and its associated chute section 70, and as clearly shown in FIGS. and 6, this strapping head and its associated chute 70 are effectively supported by an articulated linkage mechanism which is designated in its entirety at 72 (FIG. 2) form the carriage leg 52, while the separate chute section 68 is similarly supported by a single upper articulated mechanism 74.
  • a pneumatic piston and cylinder assembly 80 (FIGS. 1 and 2), supported on the rail 44 and including an elongated cylinder 82 within which there is disposed a piston 84.
  • a first cable section 88 has one end attached to the piston and passes along one side of the rail and around a sheave 90 which is supported at one end of the rail 44.
  • the cable section 88 makes a reverse bend and has a reentrant portion which passes along the other side of the rail and is attached to a medial region of the carriage leg 52.
  • a second cable section 92 similarly has one end attached to the piston 84, passes over a second sheave 94 at the opposite end of the rail 44 and has its outer end attached to the leg 52.
  • valve means are provided whereby, during the entire strapping portion of the machine cycle, air is continuously supplied to the end of the cylinder 80 adjacent the tension column 10 so as to pneumatically bias the piston 84 to the right as viewed in FIG. 1 and consequently to yieldingly urge the carriage 40 to the left.
  • Shock absorbers 96 at the opposite ends of the track 44 are positioned in the path of travel of a pair of impact plates 98 mounted on the carriage 40 and determine the limit of movement of the carriage in either direction.
  • each pin 100 is disposed in a longitudinal row on the rail 44, each pin being in the form of a relatively short plunger which is slidably disposed within a cylindrical bore 104 (FIGS. 3 and 4) and which is normally maintained in the full line projected position of FIG. 3 wherein one end thereof projects laterally outwardly of the rail 44 and presents a flat plunger-engaging surface 106 designed for engagement with the stop plunger 102 on the carriage leg 52.
  • the various stop pins 100 and the stop finger 102 assume longitudinal positions along the rail 44 so that when the stop finger 102 is in engagement with any given stop pin 100, the strap chute section will be in accurate register with one of the chute sections 66 in the lower platen 24, as well as with the corresponding chute section 64 in the upper platen 16.
  • the rear travelling chute section 68 will be in register with the two fixed chute sections 66 and 64 so that initiation of the strapping operation will cause the strap to be fed endwise and completely about the bale at the particular strapping station at which the strapping head is positioned.
  • each stop pin establishes a strapping station or position for the strapping head 32 and its associated chute section 70, the six strapping stations being labelled a, b, c, d, e, and fin FIG. 1.
  • the corresponding stop pins which determine these six strapping stations or positions are correspondingly labelled a, b, c, d, e andj'. It will be observed that the vertical planes of the stop pins 100 are once-removed from the vertical planes of the corresponding strapping positions, this feature being resorted to to avoid interference between certain relative moving parts as the carriage 40 is shifted.
  • this finger or plunger is enclosed in a cage-like supporting bracket assembly 110 (FIG. 2) having top and bottom walls 112 and 114 which are maintained spaced apart by spacer members 116.
  • the stop plunger 102 is floatingly mounted within the bracket assembly, one end thereof being pivoted to a thrust like 118 which, in turn is pivoted at one end to the bottom wall 114.
  • a spring pressed cylinder and thrust rod assembly 120 is pivotally connected at one end to the bottom wall 114 and at its other end to the link 118.
  • An internal spring 121 normally maintains the assembly 120 contracted so as to project the outer end of the stop plunger 102 outwardly of the cage-like bracket assembly 110 for successive engagement with the various stop pins 100 a, b, c, d, e and f; successively and in the order named.
  • a roller 122 which is carried at the outer end of the stop plunger 102 insures easy and frictionless withdrawal of the stop plunger from engagement with the stop sur' faces 106 on the various stop pins 100.
  • a limit switch LS1 is disposed in the path of swinging movement of the stop plunger 102 and, when engaged by the latter, momentarily closes an electric circuit through a solenoid valve PV (FIG.
  • the various stop pins 100 may selectively be withdrawn from their normally projected positions so as to allow the carriage 40 to skip any particular strapping position if desired.
  • the track 44 is provided with a threaded socket 132 in the vicinity of each plunger-receiving bore 104 and within which there is threadedly received a detent assembly 134 including a spring pressed detent ball 136.
  • This ball is designed for cooperation with a pair of detent recesses 138 and 140 which are formed onopposite sides of theassociated stop pin 100 at longitudinally spaced regions of the latter.
  • the stop pin assumes its projected position.
  • the stop pin is shifted inwardly in the direction of the beam 14 and rotated throughout an angle of 180 as shown in dotted lines, the ball 136 may be caused to enter the detent recess 140 and thus withdraw the projecting portion of the stop pin into the general plane of the track 44 and out of the path of movement of the roller 122 so that the carriage 40 will by-pass the particular strapping station represented by such stop pin and proceed to the next succeeding strapping station which has associated therewith a projected stop pin 100.
  • a radially disposed handle 142 on each stop pin 100 facilitates manipulation of the latter.
  • the aforementioned articulated linkage mechanism 72 which supports the parkirighead is provided for this purpose.
  • This linkage mechanism includes an upper linkage system 72U (FIG. 2) of the general type commonly referred to as a four bar linkage and a substantially identical lower four bar linkage system 72L.
  • Each linkage system includes one fixed bar, two pivoted swinging bars, and one rocking bar.
  • the fixed bar of the system is represented by the vertical front leg 52 of the carriage 40, together with a pair of brackets and 152 which project laterally from opposite sides of the leg.
  • the outer ends of the brackets 150 and 152 establish the fixed pivot points 154 and 156 of the four bar linkage system.
  • a spider-like link 158 constitutes one of the two aforementioned pivoted bars.
  • This latter link also constitutes the so-called crank bar of the four bar system inasmuchas it comprises the bar to which torque is-applied and which therefore, by its displacement, operates the four bar linkage system.
  • the other pivoted bar of the four bar system is in the form of a relatively wide plate-like link 160.
  • the link 158 is pivoted at one end to the fixed pivot point 154 while the link 160 is pivoted at one end to the fixed pivot point 156.
  • the rocking bar of the system is in the form of a floating link 162 which is pivoted at its opposite ends to the free ends of the two pivoted links 158 and 160, the pivot points being indicated at 164 and 166.
  • the strapping head 32 is fixed to and swings bodily with the pivoted links 160 of the upper and lower linkage system. Accordingly, the upper and lower links are connected together by a pair of spaced apart vertical parallel crossover members 168 which straddle the strapping head 32 and have their medial regions secured to the latter by fastening screws 170 (FIG. 1).
  • the carriage 40 During travel of the carriage 40 from the first strapping position (a) to the last strapping position (1), the
  • strapping head assumes the full line position in which it is shown in FIGS. 1 and 5 wherein the longitudinal axis thereof extends at a right angle to the adjacent side of the press box chamber.
  • This position of the strapping head is maintained by reason of a compression spring 172 which encompasses an elongated pilot rod 176.
  • the rod 174 has one end pivoted at 175 to a short external extension 176 on the bracket 150, the rod being slidable in a pilot block 178 which is pivotally carried by a medial region of the link 160.
  • the force which is exerted by the spring 172 against the link 160 yieldingly urges the latter in a counterclockwise direction as seen in FIG.
  • the link 158 is provided with a relatively long laterally projecting deflection finger 180 which carries a cam follower-roller 182 at its outer end, the roller being designed for engagement with a generally L-shaped cam plate 184 which is secured to the tension column and lies directly in the path of movement of the roller 182 as the carriage 40 moves beyond its last strapping position 0).
  • the cam plate presents a transversely extending impact face 186, a longitudinally extending face 188 and a connecting curved area 190. Shortly after the carriage 40 has moved away from the last strapping position (f) as shown in FIG. 5, the roller 182 engages the impact face 186 which, for the time being, prevents any further longitudinal movement of the roller.
  • the linkage supporting bracket 112 continues to move downwardly as viewed in FIG. 5 so that a counterclockwise movement is imparted to the link 158, thus bringing the various elements of the four bar linkage system to the positions in which they are shown in FIG. 6 and wherein'the strapping head 32 assumes its parked out-of-the-way position clear of the tensioning column 10.
  • the follower roller 182 rides around the curved area 190 of the cam plate 184 and travels on the longitudinally extending face 186 of the cam plate, while at the same time the spring 172 becomes compressed so that upon return of the carriage 40 to its starting position the four bar linkage will become restored to the condition in which it is illustrated in FIG. 5.
  • the strapping head 32 is supplied with strapping from a roll 200 (FIG. 1) which may be carried by a conventional strapping dispenser 202 from whence the strapping S extends vertically upwardly and passes around a pulley 204 adjacent the rear end of the apparatus and which is suitable supported on the track 44. From the pulley 204, the strapping passes to a second pulley 206 adjacent the other end of the track, after which the strapping passes over a third travelling pulley 208 which is supported by a bracket 209 from the carriage frame bar 48 (FIG. 2). From the pulley 208, the strapping passes downwardly and enters a guide tube 210 by means of which the strapping is fed to the strapping machine in a manner which is well understood in the art.
  • the pulley 208 which substantially overlies the strapping head 32 registers vertically with the guide tube 210 so that the strapping remains in alignment with this tube in each of the strapping positions.
  • the section of strapping between the pulley 208 and the chute 210 assumes an'inclined position as shown in FIG. 1 but such lack of vertical register is of no consequence since no strapping is performed by the strapping head at the parked position thereof.
  • the embodiment of the invention disclosed herein is fully automatic in its operation, which is to say that after the apparatus is conditioned for commencement of a baling operation the strapping head 32 will perform successive strapping operations at the various strapping stations or positions a, b, c, d, e and f and then move to its parked position preparatory to'withdrawal of the strapped bale from the press box chamber 18. Moreover, when the strapping head assumes its parked condition the apparatus automatically becomes disabled until such time as the operator again conditions it for performance of the next succeeding baling operation.
  • the various pneumatic functions associated with the apparatus are automatically operable under the control of two solenoid actuated valves, the previously mentioned plunger control valve PV and namely a carriage control valve CV. These valves hereinafter will be referred to simply as the plunger valve and the carriage valve.
  • the valves may be mounted at any convenient position on the apparatus framework.
  • FIG. 10 The operation of the herein described strapping apparatus may best be set forth with reference to FIG. 10 wherein one exemplary operative embodiment of a substantially fully automatic control system for the apparatus is disclosed.
  • the representation of FIG. 10 is entirely schematic in its representation and consists of a simplified form of interrelated pneumatic and electrical circuitry which may be employed to attain the essential apparatus functions incident to the successive strapping of bales such as the bale B, but which is not necessarily the preferred form of such circuitry.
  • the carriage 40 Before entering into a description of the operation of the apparatus, it is pointed out that for clarity of disclosure, as well as for convenience of draftsmanship, the carriage 40 is shown as assuming a mid-position along the track 44 after the roller 122 has engaged one of the stop pins 100 so that the strapping head 32 is about to commence a strapping operation.
  • the condition of the contacts associated with the limit switches, together with certain other contacts yet to be described, is the normal condition thereof incident to the particular point in the apparatus cycle thus illustrated.
  • the operation of the circuitry will however be set forth on the basis of the apparatus being in its idle condition with the carriage 40 disposed at the left hand end of the track 44 and with the strapping head 32 and its associated travelling chutes 68 and 70 assuming their parked positions as previously described.
  • the solenoid valve SV2 Prior to depression of the start button SB, for the purpose of initiating the various apparatus functions, the solenoid valve SV2 remains deenergized and is thus spring biased to its normal position wherein air is conducted from a source S2 of air under pressure through line 250, carriage valve'CV, and line 252 to the left hand end of the cylinder 82, thus forcing the piston 84 to the right and holding the carriage 40 in its extreme left hand end. position as determined by the shock absorber 96 (FIG. 1) at this end of the track 44.
  • the No. 1 holding contacts of the magnet RM perform a dual function, in that closure thereof also establishes a circuit through the winding wl of the car riage valve CV, this circuit extending through leads 11, 23, 25, contacts of the switch LS2, lead 27, No. 1 contacts of the magnet RM, leads 29, 31, winding wl of the valve CV and leads 33, 21 back to the line.
  • Energization of the winding wl causes the valve CV to.- shift its position so that air is caused to flow through line 250, valve CV, and line 254 to the right hand end of the cylinder 82, thus forcing the piston to the left and causing the carriage 40 to move away from.
  • the No. 2 contacts of this magnet Upon initial energization of the relay magnet RM incident to depression of the start button SB as previously described, the No. 2 contacts of this magnet also become closed so as to establish a circuit through the winding W2 of the solenoid valve PV to thereby retract the stop plunger 102 during forwardv travel of the carriage 40 so that the roller 122 thereon will move clear of the various stop pins 100.
  • the circuit by means of which the winding w2 becomes energized extends from the line, through leads ll, 23, 35, No. 2 contacts of the magnet RM, leads 37, 39, winding w2, and leads 41, 21 back to the line.
  • Deenergization of the winding wl restores the carriage valve to its normal condition wherein the carriage is air biased to the left in the direction of the tensioning column 10, while deenergization of the winding w2 restores the plunger valve to its normal condition where the supply of air to the cylinder 120 is discontinued, thus allowing the spring biased stop plunger to become projected for successive engagement with the stop pins during the operative strap-applying cycle of carriage movement.
  • the shock absorber 96 Upon arrival of the carriage 40 at the parking position the shock absorber 96 will terminate further movement thereof and the air bias which is continuously placed upon the piston 84 within the cylinder 82 will serve to maintain the carriage in such position against drifting. Since at this time all of the electrical contacts associated with the apparatus are open, all electrical functions are disabled and the apparatus awaits depression of the start button SB for performance of the next bale strapping operation.
  • a cable and air cylinder is disclosed herein as being the means for continuously applying a bias to the carriage 40 to move the same each time the stop plunger 102 is withdrawn from a given stop pin 100
  • other biasing means such as a fluid motor which is capable of stalling when its output is exceeded, an electric torque motor, a slip clutch or, in the case of small strapping apparatus a spring means.
  • numerous other forms of abutments may be provided on the framework of the apparatus in place of the illustrated stop pins 100.
  • a strapping apparatus for successively applying strapping loops to an article at longitudinally spaced locations therealong, a framework establishing a strapping station, a guide chute section at each location for conducting strapping endwise across said station to establish a loop thereat, a longitudinally shiftable carriage on said framework, a strapping head mounted on said carriage for feeding lengths of strapping endwise into said chutes, means yieldingly baising said carriage in one longitudinal direction along the framework to bring the strapping head into successive register with said chute sections for strap feeding purposes, and retractible limit stop means effective between the framework and carriage for arresting movement of the latter at each strapping region at such time as the strapping head moves into effective register with the chute section at such region.
  • said retractible limit stop means comprises a plunger mounted on the carriage for movement between a projected and a retracted position, a plurality of longitudinally spaced impact surfaces on the framework and normally positioned in the path of movement of the plunger when the latter is projected and the carriage moves in said one direction, and means for moving said plunger between its projected and its retracted positions.
  • said retractible limit stop means comprises a plunger mounted on the carriage for move ment between a projected and a retracted positions, means normally maintaining said plunger in its projected position, a row of longitudinally spaced stop pins on the framework and normally positioned in the path of movement of the plunger when the latter is projected and the carriage moves in said one direction, and means automatically effective upon engagement of said plunger with each stop pin for momentarily retracting the plunger to restore the same from such engagement and immediately restoring it to its projected position for subsequent engagement with the next succeeding stop pin in the row.
  • each stop pin is formed with a planar impact surface which is normal to the direction of movement of the roller and which is designed for engagement with the latter.
  • said means for moving the carriage comprises an pneumatic means normally and yieldingly biasing said carriage in one longitudinal direction, releasable limit stop means effective between the carriage and guide rail for arresting movement of the former at such time as the front and rear chute sections assume positions of register with said horizontal chute sections.
  • said releasable limit stop means comprises a stop plunger mounted on said carriage for movement between a projected and a retracted position, and a row of longitudinally spaced stop pins mounted on said rail and normally positioned in the path of movement of said plunger when the latter is in its projected position, means normally maintaining said plunger in its projected position, and means automatically effective upon engagement of the plunger with a stop pin for momentarily retracting the plunger and immediately thereafter restoring the same to its projected position.
  • Apparatus for successively applying strapping loops at longitudinally spaced locations to an article positioned at a strapping action a framework establishing said station, guide chutes at each location through which strapping material is adapted to be projected endwise to establish said loops, a carriage movable longitudinally on said framework, a strapping head mounted on said carriage and movable bodily therewith, means for shifting said carriage longitudinally in one direction to move the strapping head through the strapping station in linear fashion and bring the same into successive register with said guide chutes for projection of strapping material thereto and thereafter to shift the strapping head beyond said strapping station, and means automatically effective after said head has moved beyond said strapping station for shifting the same on said carriage to a position which is transversely offset from its longitudinal path of travel through the strapping station.
  • said automatically effective means comprises a link pivotally connected at one end to the carriage and on which the strapping head is fixedly mounted, and cam means effective between said framework and link for swinging the latter, and consequently the head, outwardly away from said path of travel.
  • said automatically effective means comprises an articulated four bar linkage system mounted on said carriage and including a fixed bar, a pair of swinging bars pivoted at their proximate ends to said fixed bar, and a rocker bar pivoted at its ends to the distal ends of the pivoted bars, said strapping head being mounted one one of said pivoted bars, and an abutment on said framework and engageable with the other pivoted bar for effecting articulation of the linkage system to thus shift the strapping head to said offset position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
US00190203A 1971-10-18 1971-10-18 Bale strapping apparatus Expired - Lifetime US3720158A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19020371A 1971-10-18 1971-10-18

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Publication Number Publication Date
US3720158A true US3720158A (en) 1973-03-13

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Application Number Title Priority Date Filing Date
US00190203A Expired - Lifetime US3720158A (en) 1971-10-18 1971-10-18 Bale strapping apparatus

Country Status (6)

Country Link
US (1) US3720158A (de)
JP (1) JPS5418199B2 (de)
AU (1) AU474125B2 (de)
CA (1) CA973465A (de)
DE (1) DE2245427C3 (de)
GB (1) GB1404833A (de)

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929062A (en) * 1974-05-16 1975-12-30 Harris Press & Shear Corp Closed chamber baler
US3999476A (en) * 1972-05-16 1976-12-28 American Hoist & Derrick Company Closed chamber baler
DE2935028A1 (de) * 1979-08-30 1981-03-12 Maschinenfabrik Gerd Mosca Gmbh, 6913 Zwingenberg Umschnuerungsmaschine
DE2949519A1 (de) * 1979-12-08 1981-06-11 Hans Hugo 4020 Mettmann Büttner Maschine zum umschnueren von packstuecken
US4403542A (en) * 1981-09-01 1983-09-13 Cranston Machinery Company, Inc. Bale strapping system
US4412484A (en) * 1982-08-16 1983-11-01 General Motors Corporation Strapping machine
US4611534A (en) * 1985-04-08 1986-09-16 Cranston Machinery Co., Inc. Bale strapping apparatus
US20020139085A1 (en) * 2001-04-02 2002-10-03 Kasel Calvin E. Strap detector assembly
US20020170443A1 (en) * 2000-03-31 2002-11-21 Daniel Barton Wade Three-part wire return for baling machine
US6487833B1 (en) 2000-01-29 2002-12-03 Howard W. Jaenson Strap welding system and method
US20030024404A1 (en) * 2001-07-31 2003-02-06 Bart Daniel Baling machine with narrow head wire feeder
US6536336B1 (en) 1999-01-29 2003-03-25 Howard W. Jaenson Automatic bale strapping system
US6616090B1 (en) 2000-03-31 2003-09-09 L&P Property Management Company Wire supply control assembly for feeding wire
US6628998B2 (en) 2001-07-31 2003-09-30 L & P Property Management Company Operator input interface for baling machine
US6637324B2 (en) 2001-07-31 2003-10-28 L & P Property Management Company Wide aperture wire tracking for baling machine
US20040039476A1 (en) * 2002-08-23 2004-02-26 Fanuc Ltd. Multi-system numerical control device
US6705214B1 (en) 2001-07-31 2004-03-16 L&P Property Management Company Automatic cotton baler with tilt-out heads
US20040054441A1 (en) * 2001-07-31 2004-03-18 L & P Property Management Company Control system for bailing machine
US6711994B1 (en) 2000-03-31 2004-03-30 L & P Property Management Company Wire-tie pull pins
US6975911B2 (en) 2001-07-31 2005-12-13 L&P Property Management Company Operator input interface for baling machine
US20060043138A1 (en) * 2004-08-25 2006-03-02 L & P Property Management Company Wire feeding apparatus and method
US20060042476A1 (en) * 2004-08-25 2006-03-02 L & P Property Management Company Lower guide track for down packing press apparatus and method
US20060042481A1 (en) * 2004-08-25 2006-03-02 L & P Property Management Company Method and apparatus for driving multiple knotters
US20060042477A1 (en) * 2004-08-25 2006-03-02 L & P Property Management Company Short platen compatible guide track insertion and removal apparatus and method
WO2006026375A2 (en) * 2004-08-25 2006-03-09 L & P Property Management Company Method and apparatus for driving multiple knotters
US7127986B2 (en) 2004-08-25 2006-10-31 L&P Property Management Company Laterally displaceable guide track for a bulk material baler apparatus and method
US7389723B1 (en) * 2007-07-24 2008-06-24 Illinois Tool Works Inc. Strap joint rotator
US20080202356A1 (en) * 2007-02-28 2008-08-28 Bradley Paul Actis Strap welding system and method
US7421944B1 (en) * 2008-03-27 2008-09-09 Illinois Tool Works Inc. Strap joint rotator with pivoting linkage and pinch wheel
CN102490928A (zh) * 2011-12-26 2012-06-13 常州大学 棉花打包穿带六连杆避让装置
US20140053742A1 (en) * 2012-08-22 2014-02-27 Middleton Engineering Limited Baling presses
US10631465B2 (en) 2008-03-03 2020-04-28 H.W.J. Designs For Agribusiness, Inc. Bagging assembly
US11021282B2 (en) 2017-07-19 2021-06-01 Signode Industrial Group Llc Strapping device configured to carry out a strap-attachment check cycle
US11707020B1 (en) 2022-01-26 2023-07-25 Arland Morrison Cotton bale strapping apparatus and methods of use

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US2838992A (en) * 1952-09-02 1958-06-17 Internat Packaging Corp Apparatus for applying metal bands about an article or articles
US2915003A (en) * 1956-11-13 1959-12-01 Signode Steel Strapping Co Power strapping machine
US3014494A (en) * 1959-02-24 1961-12-26 Acme Steel Co Tool mount
US3475879A (en) * 1967-06-01 1969-11-04 Continental Moss Gordin Inc Apparatus for tying a compressed bale
US3521550A (en) * 1968-09-25 1970-07-21 Lummus Cotton Gin Co Bale strapping apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2838992A (en) * 1952-09-02 1958-06-17 Internat Packaging Corp Apparatus for applying metal bands about an article or articles
US2915003A (en) * 1956-11-13 1959-12-01 Signode Steel Strapping Co Power strapping machine
US3014494A (en) * 1959-02-24 1961-12-26 Acme Steel Co Tool mount
US3475879A (en) * 1967-06-01 1969-11-04 Continental Moss Gordin Inc Apparatus for tying a compressed bale
US3521550A (en) * 1968-09-25 1970-07-21 Lummus Cotton Gin Co Bale strapping apparatus

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999476A (en) * 1972-05-16 1976-12-28 American Hoist & Derrick Company Closed chamber baler
US3929062A (en) * 1974-05-16 1975-12-30 Harris Press & Shear Corp Closed chamber baler
DE2935028A1 (de) * 1979-08-30 1981-03-12 Maschinenfabrik Gerd Mosca Gmbh, 6913 Zwingenberg Umschnuerungsmaschine
DE2949519A1 (de) * 1979-12-08 1981-06-11 Hans Hugo 4020 Mettmann Büttner Maschine zum umschnueren von packstuecken
US4403542A (en) * 1981-09-01 1983-09-13 Cranston Machinery Company, Inc. Bale strapping system
US4412484A (en) * 1982-08-16 1983-11-01 General Motors Corporation Strapping machine
US4611534A (en) * 1985-04-08 1986-09-16 Cranston Machinery Co., Inc. Bale strapping apparatus
US6536336B1 (en) 1999-01-29 2003-03-25 Howard W. Jaenson Automatic bale strapping system
US6487833B1 (en) 2000-01-29 2002-12-03 Howard W. Jaenson Strap welding system and method
US6553900B1 (en) 2000-03-31 2003-04-29 L&P Property Management Company Three-part wire return for baling machine
US6616090B1 (en) 2000-03-31 2003-09-09 L&P Property Management Company Wire supply control assembly for feeding wire
US20020170443A1 (en) * 2000-03-31 2002-11-21 Daniel Barton Wade Three-part wire return for baling machine
US6922974B2 (en) 2000-03-31 2005-08-02 L & P Property Management Company Three-part wire return for baling machine
US6829877B2 (en) 2000-03-31 2004-12-14 L & P Property Management Company Three-part wire return for bailing machine
US6711994B1 (en) 2000-03-31 2004-03-30 L & P Property Management Company Wire-tie pull pins
US6571531B2 (en) * 2001-04-02 2003-06-03 Illinois Tool Works, Inc. Strap detector assembly
US6560947B2 (en) 2001-04-02 2003-05-13 Illinois Tool Works, Inc. Strap detector assembly
US20020139085A1 (en) * 2001-04-02 2002-10-03 Kasel Calvin E. Strap detector assembly
US6628998B2 (en) 2001-07-31 2003-09-30 L & P Property Management Company Operator input interface for baling machine
US6637324B2 (en) 2001-07-31 2003-10-28 L & P Property Management Company Wide aperture wire tracking for baling machine
US6705214B1 (en) 2001-07-31 2004-03-16 L&P Property Management Company Automatic cotton baler with tilt-out heads
US20040054441A1 (en) * 2001-07-31 2004-03-18 L & P Property Management Company Control system for bailing machine
US20030024404A1 (en) * 2001-07-31 2003-02-06 Bart Daniel Baling machine with narrow head wire feeder
US7085625B2 (en) 2001-07-31 2006-08-01 L&P Property Management Company Control system for baling machine
US6975911B2 (en) 2001-07-31 2005-12-13 L&P Property Management Company Operator input interface for baling machine
US7497158B2 (en) * 2001-07-31 2009-03-03 L&P Property Management Company Baling machine with narrow head wire feeder
US20040039476A1 (en) * 2002-08-23 2004-02-26 Fanuc Ltd. Multi-system numerical control device
US20060042476A1 (en) * 2004-08-25 2006-03-02 L & P Property Management Company Lower guide track for down packing press apparatus and method
US20060043138A1 (en) * 2004-08-25 2006-03-02 L & P Property Management Company Wire feeding apparatus and method
WO2006026375A2 (en) * 2004-08-25 2006-03-09 L & P Property Management Company Method and apparatus for driving multiple knotters
WO2006026375A3 (en) * 2004-08-25 2006-06-15 L & P Property Management Co Method and apparatus for driving multiple knotters
US20060042481A1 (en) * 2004-08-25 2006-03-02 L & P Property Management Company Method and apparatus for driving multiple knotters
US7093535B2 (en) 2004-08-25 2006-08-22 L&P Property Management Company Short platen compatible guide track insertion and removal apparatus and method
US7121195B2 (en) 2004-08-25 2006-10-17 L&P Property Management Company Method and apparatus for driving multiple knotters
US7124679B2 (en) 2004-08-25 2006-10-24 L&P Property Management Company Lower guide track for down packing press apparatus and method
US7127986B2 (en) 2004-08-25 2006-10-31 L&P Property Management Company Laterally displaceable guide track for a bulk material baler apparatus and method
US20060042477A1 (en) * 2004-08-25 2006-03-02 L & P Property Management Company Short platen compatible guide track insertion and removal apparatus and method
US7395952B2 (en) 2004-08-25 2008-07-08 L & P Property Management Company Wire feeding apparatus and method
US7841272B2 (en) 2007-02-28 2010-11-30 H.W.J. Designs For Agribusiness Strap welding system and method
US20080202356A1 (en) * 2007-02-28 2008-08-28 Bradley Paul Actis Strap welding system and method
US7526995B2 (en) * 2007-02-28 2009-05-05 H.W.J. Designs For Agribusiness, Inc. Strap welding system and method
US20090211465A1 (en) * 2007-02-28 2009-08-27 Bradley Paul Actis Strap welding system and method
US7389723B1 (en) * 2007-07-24 2008-06-24 Illinois Tool Works Inc. Strap joint rotator
AU2008202691B2 (en) * 2007-07-24 2010-05-27 Signode International Ip Holdings Llc Strap joint rotator
US10709068B2 (en) 2008-03-03 2020-07-14 H.W.J. Designs For Agribusiness, Inc. Bagging assembly
US10631465B2 (en) 2008-03-03 2020-04-28 H.W.J. Designs For Agribusiness, Inc. Bagging assembly
US11439071B2 (en) 2008-03-03 2022-09-13 H.W.J. Designs For Agribusiness, Inc. Bagging assembly
CN102015460B (zh) * 2008-03-27 2013-03-27 伊利诺斯工具制品有限公司 具有枢转拉杆和夹送轮的捆扎带接合处旋转器
US7421944B1 (en) * 2008-03-27 2008-09-09 Illinois Tool Works Inc. Strap joint rotator with pivoting linkage and pinch wheel
CN102490928A (zh) * 2011-12-26 2012-06-13 常州大学 棉花打包穿带六连杆避让装置
CN102490928B (zh) * 2011-12-26 2013-05-22 常州大学 棉花打包穿带六连杆避让装置
US20140053742A1 (en) * 2012-08-22 2014-02-27 Middleton Engineering Limited Baling presses
US11021282B2 (en) 2017-07-19 2021-06-01 Signode Industrial Group Llc Strapping device configured to carry out a strap-attachment check cycle
US11577867B2 (en) 2017-07-19 2023-02-14 Signode Industrial Group Llc Strapping device configured to carry out a strap-attachment check cycle
US11707020B1 (en) 2022-01-26 2023-07-25 Arland Morrison Cotton bale strapping apparatus and methods of use

Also Published As

Publication number Publication date
JPS5418199B2 (de) 1979-07-05
AU474125B2 (en) 1976-07-15
DE2245427B2 (de) 1977-12-01
CA973465A (en) 1975-08-26
JPS4849599A (de) 1973-07-12
AU4443572A (en) 1974-01-17
GB1404833A (en) 1975-09-03
DE2245427A1 (de) 1973-04-26
DE2245427C3 (de) 1978-07-20

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