US3294431A - Knotter lock for tying machine - Google Patents

Knotter lock for tying machine Download PDF

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Publication number
US3294431A
US3294431A US453100A US45310065A US3294431A US 3294431 A US3294431 A US 3294431A US 453100 A US453100 A US 453100A US 45310065 A US45310065 A US 45310065A US 3294431 A US3294431 A US 3294431A
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US
United States
Prior art keywords
plunger
knotter
pinion
frame
gear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US453100A
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English (en)
Inventor
Douglas A Gregory
Elton E Berry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BH Bunn Co
Original Assignee
Bunn Co B
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bunn Co B filed Critical Bunn Co B
Priority to US453100A priority Critical patent/US3294431A/en
Priority to GB15741/66A priority patent/GB1097026A/en
Priority to DEB86738A priority patent/DE1276544B/de
Priority to FR59390A priority patent/FR1518608A/fr
Priority to BE680299D priority patent/BE680299A/xx
Priority to SE6038/66A priority patent/SE313771B/xx
Priority to NL6605943A priority patent/NL6605943A/xx
Priority to ES0326272A priority patent/ES326272A1/es
Priority to CH645266A priority patent/CH461353A/de
Application granted granted Critical
Publication of US3294431A publication Critical patent/US3294431A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
    • B65B13/025—Hand-held tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B13/00—Bundling articles
    • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
    • B65B13/24—Securing ends of binding material
    • B65B13/26—Securing ends of binding material by knotting

Definitions

  • This invention relates to tying machines for tying bundles, packages, or the like, and particularly to a lock for the knotter thereof.
  • the solution to the foregoing problem is to provide a locking mechanism for the knotter so that the knotter, after it performs its function, is prevented from rotating, even though it may be under tension produced by the twine when the package or bundle to be tied is prematurely pulled off the machine.
  • One such knotter lock is disclosed and claimed in a co-pending application of Lurie, Serial No. 313,221, filed October 2, 1963.
  • a pivoted latch is used which is normally biased by a spring to engage the pinion which drives the knotter beak, but the latch is withdrawn from the pinion by a cam operated by the intermittent driving mechanism for the beak.
  • this mechanism operates satisfactorily, it is amongthe general objects of this invention to simplify and render less expensive a knotter lock for the drive mechanism of the knotter of the tying machine.
  • this invention has within its purview the provision of a sliding bolt-type of locking mechanism for the knotter of a tying machine, which will be less expensive to make and which will occupy less space than the knotter lock of the prior art.
  • a further specific object of this invention is to provide a knotter lock for a tying machine which will be simple and certain in operation and which can be readily maintained in good working order.
  • FIG. 1 is a side elevational view of a knotter for a tying machine and a portion of the drive mechanism therefor to which this invention has been applied;
  • FIG. 2 is a rear elevational view of a portion of the mechanism of FIG. 1 looking in the direction of the arrows at the ends of line 22 thereof;
  • FIG. 3 is a perspective view of the lock plunger portion of the invention shown in FIG. 1;
  • FIG. 4 is a fragmentary plan view of the lock plunger and associated apparatus taken along line 4-4 of FIG. 1 and looking in the direction of the arrows at the ends thereof;
  • FIG. 5 is a view corresponding to FIG. 4 but showing the lock mechanism in an unlocked condition
  • FIG. 6 is a rear elevational view of the mechanism of FIG. 1 corresponding to FIG. 2 but showing the drive mechanism for the knotter after it has performed its function.
  • a typical machine to which this invention may be applied is disclosed in the aforementioned B. H. Bunn Patent No. 1,606,290, dated November 9, 1962, for Tying Machine.
  • the details of the tying machine other than the knotter and the immediate drive therefor are not a part of this invention and accordingly will not be described herein.
  • Each such machine employs a knotter which, during the performance of its function, is rotated in relation to the twine to be tied, in a manner to tie a knot in the twine, and the rotation of the knotter through 360 is an essential portion of the tying function.
  • the drive for the knotter is an interrupted gear which, as part of the tying cycle, is made to engage a drive gear or pinion for the knotter during a predetermined portion of the tying cycle of the machine and to release the knotter, that is, to disengage itself from the pinion during the remaining portion of the tying function of the machine. While the pinion is disengaged, certain other portions of the tying cycle take place, such as the stripping and cutting of the twine, and during these portions of the cycle a resiliently held friction device is depended upon to hold the knotter in place.
  • the resilient device is yieldable, and should the bundle be moved before the stripping and cutting functions are completed, the knotter itself may be rotated through a portion of its cycle and left there in an out-of-phase condition when the next knotting cycle is to take place. It is to the solution of this problem that the aforesaid Lurie application and this invention are addressed.
  • a knotter frame 10 which, for the performance of certain of the functions of the knotter, is mounted oscillatably on a shaft 11 and is provided with a knotter beak 12.
  • Said knotter beak is secured to a shaft 13 by a pin 14, or the like, said shaft 13 extending downwardly out of frame 10 and having a bevel gear 15 secured to it which meshes with a bevel gear 16 mounted on a shaft 17 extending through and journalled in frame 10.
  • a drive pinion 18 On the opposite end of shaft 17 from bevel gear 16 is mounted a drive pinion 18 which derives its drive from an interrupted gear 19.
  • the latter is mounted for rotation with the drive shaft 20 and is in fact a gear sector secured to a casting 21 by screws 22 (FIG. 2), or the like, the casting 21 in turn being appropriately secured for rotation with said shaft 20.
  • gear section 19 is designed to be rotated in counter-clockwise direction as viewed in FIG. 2, around drive shaft 20, past pinion 18.
  • the teeth of gear sector 19 are adapted to engage the teeth of pinion 18 and to facilitate such engagement, one of the teeth 23 of the pinion 18 is relieved as at 24, to enable the lead tooth 25 of the gear sector 19 to enter the space immediately in front of relieved tooth 23.
  • the length of the gear sector 19 determines the amount of rotation to be imparted to pinion 18.
  • the number of teeth on sector 19 is such as the ensure a 360 rotation of pinion 18. This means that with a one-to-one ratio between bevel gears 15 and 16 the knotter beak 12 will similarly be rotated through exactly 360 so that it will always commence its cycle from a predetermined orientation relative to the knotter frame 10.
  • the locking means which holds pinion 18 against rotation with respect to frame is a sliding bolt mounted in the knotter frame 10 and so disposed in frame 10 as to enter a space between adjacent teeth on pinion 18.
  • the bolt is shown in FIG. 1 at 26 and is in the form of a plunger of cylindrical cross-section which is formed with an axially extending central pin 27 which centers a helical spring 28 disposed in a recess 29 located concentrically with respect to a recess 30 in which the plunger 26 is adapted to reciprocate.
  • said plunger 26 has a tooth 31 formed in its upper half which is disposed in alignment with a space between adjacent teeth on pinion 18.
  • Said plunger is maintained in a predetermined orientation relative to pinion 18 by a guide screw 32 (FIG. 4) which may be in the form of a set screw and which accordingly is threadedly received in a suitable opening 33 in the side of knotter frame 10.
  • a lock nut 34 engaging the exterior end of screw 32 serves to maintain said screw in a predetermined location in frame 10.
  • the inner end 35 of screw 32 is received in an axial groove 36 in the side of plunger 26, so that said plunger may reciprocate in its recess 30, but is prevented from turning therein by the inner end 35 of screw 32.
  • the outer end 37 of plunger 26 has a chamfer 38 around the perimeter thereof which is adapted to be engaged by a cam 39 secured to gear sector 19 so as to be rotatable therewith.
  • cam 39 which engages the chamfer 38 and forces plunger 26 into its recess against the action of spring 28.
  • the inner position of the plunger is shown in FIG. 5.
  • the opposite end 40 of the cam 39 is oppositely sloped so that as the cam leaves plunger 26 said surface 40 engages chamfer 38 and allows plunger 26 to move outwardly under the action of spring 28.
  • axial groove 36 also provides a means for allowing air to move freely into and out of recess behind plunger 26.
  • plunger 26 In its projected position plunger 26 is held against leaving its recess 30 by the engagement of surfaces 41 and 42 (FIGS. 3 and 6) disposed on either side of tooth 31 with the sides of the gear teeth of the pinion 18. Said pinion 18 is wider (i.e. of greater axial extent) than the gear sector 19 as shown in FIG. 1, so that plunger 26 will not extend into the path of movement of said gear sector 19 and yet will engage the pinion 18 to perform its stated holding function.
  • knotter lock of this invention is very simple and inexpensive and can be readily incorporated into the frame 10 of the knotter where it occupies very little space. Its function is automatic and does not require any major change in the drive for the pinion 18.
  • a frame a rotatable knotter beak on the frame, intermittent drive means for the beak, including a pinion gear, a shaft rotatable in the frame and driven by the pinion gear, means connecting the shaft to the beak, and an interrupted gear adapted to engage and drive the pinion gear; a plunger reciprocable in the frame toward and away from the pinion gear, a tooth on the plunger adapted to enter a space between adjacent teeth on the pinion gear, resilient means on the frame and bearing against the plunger to urge the plunger against the pinion gear, and means movable with the interrupted gear to engage and move the plunger away from the pinion gear.
  • said frame having a recess in which the plunger is reciprocable, and a second recess connected to and coaxial with the firstmentioned recess, said plunger having a coaxial pin extending into said first-mentioned recess, and said means on the frame and bearing against the plunger to urge the plunger against the pinion gear comprising a helical spring having one end thereof in the second recess its other end disposed around said pin.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
US453100A 1965-05-04 1965-05-04 Knotter lock for tying machine Expired - Lifetime US3294431A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US453100A US3294431A (en) 1965-05-04 1965-05-04 Knotter lock for tying machine
GB15741/66A GB1097026A (en) 1965-05-04 1966-04-07 Lock for the beak of a knot-tying device
DEB86738A DE1276544B (de) 1965-05-04 1966-04-19 Sperrvorrichtung fuer die Knotvorrichtung einer Bindemaschine
FR59390A FR1518608A (fr) 1965-05-04 1966-04-27 Verrou de noueur pour les machines à lier
BE680299D BE680299A (enrdf_load_stackoverflow) 1965-05-04 1966-04-29
SE6038/66A SE313771B (enrdf_load_stackoverflow) 1965-05-04 1966-05-03
NL6605943A NL6605943A (enrdf_load_stackoverflow) 1965-05-04 1966-05-03
ES0326272A ES326272A1 (es) 1965-05-04 1966-05-03 Un mecanismo de bloqueo para un aparato anudador de una maquina anudadora.
CH645266A CH461353A (de) 1965-05-04 1966-05-04 Knotvorrichtungssperre für Bindemaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US453100A US3294431A (en) 1965-05-04 1965-05-04 Knotter lock for tying machine

Publications (1)

Publication Number Publication Date
US3294431A true US3294431A (en) 1966-12-27

Family

ID=23799201

Family Applications (1)

Application Number Title Priority Date Filing Date
US453100A Expired - Lifetime US3294431A (en) 1965-05-04 1965-05-04 Knotter lock for tying machine

Country Status (9)

Country Link
US (1) US3294431A (enrdf_load_stackoverflow)
BE (1) BE680299A (enrdf_load_stackoverflow)
CH (1) CH461353A (enrdf_load_stackoverflow)
DE (1) DE1276544B (enrdf_load_stackoverflow)
ES (1) ES326272A1 (enrdf_load_stackoverflow)
FR (1) FR1518608A (enrdf_load_stackoverflow)
GB (1) GB1097026A (enrdf_load_stackoverflow)
NL (1) NL6605943A (enrdf_load_stackoverflow)
SE (1) SE313771B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985003272A1 (en) * 1984-01-24 1985-08-01 Peter Born Ag Apparatus for knotting a bond wound around goods
CN102249012A (zh) * 2010-05-20 2011-11-23 卓振辉 用于捆扎机的结绳器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215461A (en) * 1963-10-02 1965-11-02 Bunn Co B Knotter lock

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2374900A (en) * 1943-09-03 1945-05-01 Nat Bundle Tyer Company Bundle tying machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215461A (en) * 1963-10-02 1965-11-02 Bunn Co B Knotter lock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985003272A1 (en) * 1984-01-24 1985-08-01 Peter Born Ag Apparatus for knotting a bond wound around goods
CN102249012A (zh) * 2010-05-20 2011-11-23 卓振辉 用于捆扎机的结绳器

Also Published As

Publication number Publication date
ES326272A1 (es) 1967-03-01
BE680299A (enrdf_load_stackoverflow) 1966-10-31
DE1276544B (de) 1968-08-29
CH461353A (de) 1968-08-15
SE313771B (enrdf_load_stackoverflow) 1969-08-18
NL6605943A (enrdf_load_stackoverflow) 1966-11-07
FR1518608A (fr) 1968-03-29
GB1097026A (en) 1967-12-29

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